WO2025141908A1 - Engin de chantier - Google Patents

Engin de chantier Download PDF

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Publication number
WO2025141908A1
WO2025141908A1 PCT/JP2024/022576 JP2024022576W WO2025141908A1 WO 2025141908 A1 WO2025141908 A1 WO 2025141908A1 JP 2024022576 W JP2024022576 W JP 2024022576W WO 2025141908 A1 WO2025141908 A1 WO 2025141908A1
Authority
WO
WIPO (PCT)
Prior art keywords
power
vehicle body
harvesting device
output shaft
traveling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/JP2024/022576
Other languages
English (en)
Japanese (ja)
Inventor
倫祥 坂野
剛士 日比野
誠 宮崎
雅寛 川畑
亮介 福田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kubota Corp
Original Assignee
Kubota Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kubota Corp filed Critical Kubota Corp
Publication of WO2025141908A1 publication Critical patent/WO2025141908A1/fr
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B71/00—Construction or arrangement of setting or adjusting mechanisms, of implement or tool drive or of power take-off; Means for protecting parts against dust, or the like; Adapting machine elements to or for agricultural purposes
    • A01B71/02—Setting or adjusting mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D49/00—Tractors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D49/00—Tractors
    • B62D49/06—Tractors adapted for multi-purpose use

Definitions

  • the present invention relates to a work vehicle for performing work such as agricultural work.
  • Patent Document 1 A work vehicle disclosed in the following Patent Document 1 is known in the prior art.
  • the work vehicle (tractor) disclosed in Patent Document 1 comprises a running body, a power unit (engine) mounted on the running body, an output shaft (PTO shaft) for extracting power generated by the power unit to the rear, and a mounting section (three-point linkage mechanism) for mounting a work implement (cultivator) to the rear of the running body.
  • the above-mentioned work vehicle can output the power generated by the power unit from the output shaft to the rear of the traveling body and transmit it to the work equipment attached to the mounting part.
  • the power generated by the power unit cannot be output above the traveling body and transmitted to the work equipment.
  • the present invention was made in consideration of the above problems, and aims to provide a work vehicle that can output the power generated by the power unit above the running body and transmit it to the work equipment.
  • a work vehicle comprises a running body, a power unit mounted on the running body, a mounting section that can mount a work device having a power input section to which power is input onto the running body and that allows at least the power input section to be mounted onto the running body, and a power transmission mechanism that outputs the power generated by the power unit above the running body so that it can be transmitted to the work device.
  • the power transmission mechanism may have an upward output shaft that extends upward and outputs the power generated by the power unit above the traveling body.
  • It may be equipped with a lateral output shaft that outputs the power generated by the power unit forward, backward, or to the side, and the upward output shaft may branch off from the middle of the lateral output shaft and extend upward.
  • the work vehicle may be equipped with a lateral output shaft that outputs the power generated by the power unit forward, backward, or to the side, and the power transmission mechanism may have a change mechanism that allows the lateral output shaft to be changed to an upward direction that extends upward.
  • the change mechanism may include a lifting device that raises and lowers a second working device located in front or behind the traveling body, and the lifting device may change the lateral output shaft to an upward direction when the second working device is not attached.
  • the work vehicle may be equipped with a lateral output shaft that outputs the power generated by the power unit forward, backward, or to the side, and the power transmission mechanism may have a gear transmission mechanism that extracts power from a mid-way point of the lateral output shaft and outputs it above the traveling body.
  • the work vehicle may be equipped with a lateral output shaft that outputs the power generated by the power unit forward, backward, or to the side, and the power transmission mechanism may have a belt transmission mechanism that extracts power from a mid-way portion of the lateral output shaft and outputs it above the traveling body.
  • the working device may have a downward input shaft connected to the upward output shaft as the power input section.
  • the working device may have, as the power input section, a downward input shaft that is connected to the lateral output shaft that has been changed to face upward.
  • the gear transmission mechanism may have an output gear that outputs the power taken from the middle of the horizontal output shaft to above the traveling body, and the working device may have an input gear that meshes with the output gear as the power input section.
  • the work vehicle includes a running body, a power unit mounted on the running body, a working device having a power input unit to which power is input, a mounting unit that allows the working device to be mounted on the running body and at least the power input unit to be mounted on the running body, and a power transmission mechanism that outputs the power generated by the power unit above the running body so that it can be transmitted to the working device.
  • the work system motor 6 may be a hydraulic motor.
  • the hydraulic motor is driven by hydraulic oil supplied from a hydraulic pump.
  • the hydraulic pump is driven by the travel system motor 5, the hydraulic motor (work system motor 6) is driven by the hydraulic oil supplied from the hydraulic pump, and the external output shaft is driven by the drive of the hydraulic motor.
  • the work vehicle 1 may be equipped with a work system motor 6 that is a hydraulic motor in addition to the work system motor 6 that is an electric motor.
  • the wheels 30 are arranged on the sides of the vehicle body 2.
  • the left front wheel 3LF and the left rear wheel 3LB are arranged on the left side of the vehicle body 2.
  • the right front wheel 3RF and the right rear wheel 3RB are arranged on the right side of the vehicle body 2.
  • the size (diameter and width) of the rear wheels (left rear wheel 3LB, right rear wheel 3RB) is larger than the size (diameter and width) of the front wheels (left front wheel 3LF, right front wheel 3RF).
  • the work vehicle 1 is equipped with a lifting device 10 that can be raised and lowered by mounting a work device 300 different from the work device 200 described below.
  • the different work device 300 will be referred to as the "second work device 300" below.
  • the second work device 300 can be detachably mounted to the lifting device 10.
  • the lifting device 10 is provided at the rear of the vehicle body 2.
  • Figure 5 is a view of the lifting device 10 as seen from the rear.
  • the lifting device 10 may also be provided at the front or side (left or right) of the vehicle body 2.
  • the type of the second work device 300 attached to the lifting device 10 is not particularly limited.
  • the second work device 300 may be a device for performing agricultural work (farm work), a device for performing civil engineering work, a device for performing construction work, a device for performing transportation work, etc.
  • the lifting device 10 is composed of a three-point link mechanism. Specifically, as shown in FIG. 5, the lifting device 10 has a lift arm 10a, a lower link 10b, a top link 10c, a lift rod 10d, and a lift cylinder 10e.
  • the front end of the lift arm 10a is supported on the upper rear part of the vehicle body 2 so that it can swing upward or downward.
  • the lift arm 10a swings (lifts and lowers) when driven by the lift cylinder 10e.
  • the lift cylinder 10e is composed of a hydraulic cylinder.
  • the lift cylinder 10e is connected to a hydraulic pump (not shown) via a control valve (not shown).
  • the hydraulic pump is driven by the work system motor 6.
  • the control valve is an electromagnetic valve or the like whose flow path is controlled to open and close by the control device 15.
  • the flow of hydraulic oil discharged from the hydraulic pump can be controlled by the control valve to extend and retract the lift cylinder 10e.
  • the front end of the lower link 10b is supported on the rear lower part of the vehicle body 2 so that it can swing upward or downward.
  • the front end of the top link 10c is supported on the rear part of the vehicle body 2 above the lower link 10b so that it can swing upward or downward.
  • the lift rod 10d connects the lift arm 10a to the lower link 10b.
  • the second work device 300 is connected to the rear part of the lower link 10b and the rear part of the top link 10c. When the lift cylinder 10e is driven (extends and retracts), the lift arm 10a rises and lowers, and the lower link 10b connected to the lift arm 10a via the lift rod 10d rises and lowers. As a result, the second work device 300 swings upward or downward (rises and falls) with the front part of the lower link 10b as a fulcrum.
  • the second work device 300 attached to the lifting device 10 is towed by the work vehicle 1 as the work vehicle 1 travels.
  • a cart or the like for transporting agricultural products or the like may be attached to the lifting device 10.
  • the work vehicle 1 is equipped with a positioning device 11.
  • the positioning device 11 can detect the position of the vehicle body 2 (positioning information including latitude and longitude) using a satellite positioning system (positioning satellite) such as D-GPS, GPS, GLONASS, Hokuto, Galileo, and Michibiki.
  • a satellite positioning system positioning satellite
  • the positioning device 11 receives satellite signals transmitted from the positioning satellites (position of the positioning satellite, transmission time, correction information, etc.), and detects the position of the vehicle body 2 (e.g., latitude, longitude) based on the satellite signals.
  • the positioning device 11 has a receiving device 12 and an inertial measurement unit (IMU) 13.
  • the receiving device 12 has an antenna and the like and is a device that receives satellite signals transmitted from positioning satellites, and is attached to the vehicle body 2.
  • the inertial measurement unit 13 has an acceleration sensor that detects acceleration, a gyro sensor that detects angular velocity, and the like.
  • the inertial measurement unit 13 is attached to the vehicle body 2.
  • the inertial measurement unit 13 can detect the roll angle, pitch angle, yaw angle, etc. of the vehicle body 2.
  • the yaw angle may be detected by installing multiple positioning devices 11.
  • the work vehicle 1 is equipped with a communication device 14.
  • the communication device 14 includes a communication circuit for communicating via an in-vehicle network and a wireless communication circuit for wireless communication.
  • the wireless communication circuit can directly or indirectly wirelessly communicate with an external device using the IEEE 802.11 series of communication standards such as Wi-Fi (Wireless Fidelity, registered trademark), BLE (Bluetooth (registered trademark) Low Energy), LPWA (Low Power, Wide Area), and LPWAN (Low-Power Wide-Area Network).
  • the communication device 14 may be provided with a communication circuit capable of wirelessly communicating with an external device, for example, via a mobile phone communication network or a data communication network.
  • the external device may be, for example, a personal computer, a smartphone, a tablet computer, a PDA, or a server.
  • the external device may include, for example, an operation device 80, which will be described later.
  • the work vehicle 1 is equipped with a control device 15.
  • the control device 15 is mounted on the traveling body 100.
  • the control device 15 is a device that performs various controls of the work vehicle 1.
  • the control device 15 is equipped with a calculation unit (CPU, etc.) and a memory unit (RAM, ROM, etc.).
  • the memory unit may include an external memory provided outside the control device 15.
  • the control device 15 is connected to the various devices and mechanisms shown in FIG. 7 via an in-vehicle LAN (on-board network) such as a CAN (Controller Area Network) or a communication line.
  • LAN on-board network
  • CAN Controller Area Network
  • the control device 15 controls the operation of various devices and mechanisms communicatively connected to the control device 15 by the calculation unit executing various control programs stored in the memory unit.
  • the functions of each control unit of the control device 15 (automatic driving control unit 15A, height change control unit 15B) described below are realized by the calculation unit executing predetermined control programs stored in the memory unit.
  • the control device 15 includes an automatic driving control unit 15A.
  • the automatic driving control unit 15A controls the automatic driving of the traveling machine body 100.
  • the traveling machine body 100 is equipped with a control device 15 that performs automatic driving.
  • the automatic driving control unit 15A can execute line-type automatic driving control and autonomous-type automatic driving control.
  • line-type automatic driving control the automatic driving control unit 15A controls the operation of the steering mechanism 60, the transmission 9, the motor 5, etc., which will be described later, so that the traveling machine body 100 (vehicle body 2) moves along a predetermined planned driving line.
  • the automatic driving control unit 15A sets the direction of travel (steering direction) and vehicle speed (vehicle speed) of the vehicle body 2 based on the results of sensing (detecting objects) around the traveling body 100 (vehicle body 2) using the positioning device 11, etc., and controls the operation of the steering mechanism 60, transmission 9, motor 5, etc. to achieve the set steering and vehicle speed.
  • the automatic driving control unit 15A may be configured to be able to execute either the line-type automatic driving control or the autonomous automatic driving control.
  • the configuration of the automatic driving control unit 15A is not limited to the configuration described above.
  • the control device 15 of the traveling body 100 includes an automatic driving control unit 15A, so that the work vehicle 1 can perform automatic driving (unmanned driving) without an operator on board. Therefore, the traveling body 100 of the illustrated embodiment does not have a driver's seat where an operator sits.
  • the work vehicle 1 may be a vehicle that an operator rides in and performs automatic driving.
  • the work vehicle 1 may be a vehicle that an operator rides in and drives to perform driving.
  • a driver's seat is provided in the vehicle body 2.
  • the work vehicle 1 is equipped with a lighting device 16.
  • the lighting device 16 is provided on the vehicle body 2.
  • the lighting device 16 includes at least a headlight that illuminates the area in front of the vehicle body 2.
  • the lighting device 16 may include a plurality of work lights that illuminate the area around the vehicle body 2.
  • the work lights can, for example, illuminate the sides (left and right) of the vehicle body 2 or the rear of the vehicle body 2.
  • the lighting device 16 may also include status indicator lights, left and right lights, brake lights, etc.
  • the work vehicle 1 is equipped with an alarm device 17.
  • the alarm device 17 alerts people around the vehicle body 2 of danger (approaching vehicle body 2, etc.) by sound, light, etc.
  • the alarm device 17 is composed of a speaker, warning light, etc.
  • the right frame 18R is provided on the right side of the vehicle body 2.
  • the right frame 18R extends in the up-down direction along the vehicle body 2.
  • the right frame 18R also extends in the front-rear direction along the vehicle body 2.
  • the right frame 18R connects the right front wheel 3RF and the right rear wheel 3RB.
  • the first connector 21R3 connects the first front support 21R1 and the first rear support 21R2.
  • the first connector 21R3 is composed of frame material 21AR, frame material 21BR, frame material 21CR, frame material 21DR, and frame material 21ER.
  • Frame material 21AR extends in the front-to-rear direction and connects the upper part of the first front support 21R1 to the upper part of the first rear support 21R2.
  • Frame material 21BR extends in the front-to-rear direction to the right of frame material 21AR.
  • Frame material 21CR connects the front part of frame material 21AR to the front part of frame material 21BR.
  • Frame material 21DR connects the rear part of frame material 21AR to the rear part of frame material 21BR.
  • Frame material 21ER connects the midpoint of frame material 21AR in the fore-and-aft direction to the midpoint of frame material 21BR in the fore-and-aft direction.
  • the configuration of the frame structure 18 is not limited to the configuration shown in the figure.
  • the frame structure 18 may include a connection frame that connects the second left frame 20L and the second right frame 22R.
  • the connection frame can connect, for example, the upper part of the second left frame 20L and the upper part of the second right frame 22R.
  • the connection frame also becomes the movable frame 32.
  • the drive unit 40 includes a first drive unit 41 for driving the left front wheel 3LF, a second drive unit 42 for driving the right front wheel 3RF, a third drive unit 43 for driving the left rear wheel 3LB, and a fourth drive unit 44 for driving the right rear wheel 3RB.
  • the first drive unit 41, the second drive unit 42, the third drive unit 43, and the fourth drive unit 44 each have a drive device 45 and a transmission mechanism 50 described below.
  • the first drive unit 41 and the second drive unit 42 each have a steering mechanism 60 described below.
  • Each drive unit is attached to the frame structure 18.
  • the third drive unit 43 has a motor 5LB and a transmission mechanism 50LB that transmits the power of the motor 5LB to the left rear wheel 3LB.
  • the transmission mechanism 50LB is composed of a gear mechanism including multiple gears.
  • the fourth drive unit 44 has a motor 5RB and a transmission mechanism 50RB that transmits the power of the motor 5RB to the right rear wheel 3RB.
  • the transmission mechanism 50RB is composed of a gear mechanism including multiple gears.
  • the drive unit 40 has a steering mechanism 60 that changes the direction of the wheels 30.
  • the steering mechanism 60 is a mechanism that changes the direction of the front wheels (left front wheel 3LF and right front wheel 3RF) among the wheels 30.
  • the steering mechanism 60 includes a left steering mechanism 60L that changes the direction of the left front wheel 3LF, and a right steering mechanism 60R that changes the direction of the right front wheel 3RF.
  • the first drive unit 41 is equipped with a left steering mechanism 60L.
  • the second drive unit 42 is equipped with a right steering mechanism 60R.
  • the left steering mechanism 60L can rotate the left front wheel 3LF around the axis AX1 by driving the cylinder 62 to extend and retract the rod 62a.
  • the right steering mechanism 60R can rotate the right front wheel 3RF around the axis AX2 by driving the cylinder 62 to extend and retract the rod 62a.
  • the traveling direction of the traveling body 100 can be changed by driving the steering mechanism 60 to change the orientation of the left front wheel 3LF and the right front wheel 3RF.
  • the motor of the drive device 45 may be an in-wheel motor.
  • all of the left front wheel 3LF, right front wheel 3RF, left rear wheel 3LB, and right rear wheel 3RB may be driven by the in-wheel motor, or only some of the wheels (for example, the left front wheel 3LF and the right front wheel 3RF, or the left rear wheel 3LB and the right rear wheel 3RB) may be driven by the in-wheel motor.
  • the crops cut by the cutting device of the harvesting section 210 are transported by the conveyor of the transport section 220, passing through the inside of the cylindrical body 221 and moving diagonally upward from the front (or rear) of the lower part of the traveling body 100 to above the traveling body 100.
  • the storage section 230 stores the crops transported by the transport section 220.
  • the storage section 230 is composed of, for example, a grain tank.
  • the storage section 230 stores the crops transported by the transport section 220 and passed through the threshing section 240.
  • the threshing section 240 is located above the traveling body 100 and on the left side of the harvesting device 200 (the left side of the harvester 1A).
  • the rear part of the tubular body 221 is connected to the threshing section 240.
  • the crops transported through the inside of the tubular body 221 are supplied to the threshing section 240 for threshing processing.
  • a discharge section 250 is provided that cuts and discharges the straw generated by the threshing process.
  • the discharge section 250 is located at the rear of the harvesting device 200 (the rear of the harvester 1A).
  • the storage section 230 stores the grains that have been threshed and sorted by the threshing section 240.
  • the storage section 230 is located above the traveling body 100 and on the right side of the harvesting device 200 (the right side of the harvester 1A).
  • the discharge section 260 is connected to the storage section 230.
  • the discharge section 260 can discharge the crops (grains) stored in the storage section 230 to the outside by driving an auger or the like. When the storage section (grain tank) 230 becomes full, the crops (grains) stored in the storage section 230 are discharged by the discharge section 260.
  • the harvesting device 200 is equipped with a base plate 270 that supports each component part (harvesting section 210, conveying section 220, storage section 230, threshing section 240, release section 250, discharge section 260) that has a harvesting function.
  • the harvesting section 210 is arranged below the base plate 270 (below and in front of the base plate 270). More specifically, the harvesting section 210 is arranged below and in front of the base plate 270.
  • the front part of the conveying section 220 is arranged below the base plate 270. More specifically, the front part of the conveying section 220 is arranged below and in front of the base plate 270.
  • the rear part of the conveying section 220 is arranged above the base plate 270.
  • the threshing section 240 and storage section 230 are fixed onto the base plate 270.
  • the substrate 270 is, for example, a plate that is approximately rectangular in plan view. In the example shown in FIG. 16, the substrate 270 has a rectangular shape with a portion cut out. The shape, size, and thickness of the substrate 270 can be changed as appropriate depending on the shape, size, weight, etc. of the components of the harvesting device 200 (the storage section 230, the threshing section 240) that are fixed onto the substrate 270.
  • the shape, size, and thickness of the substrate 270 can also be changed depending on the mounting structure (described later) of the harvesting device 200 to the traveling body 100. For example, when recesses 501, insertion holes 503, protrusions 504, grooves 505, etc., described later, are provided on the substrate 270, the thickness of the substrate 270 can be increased as necessary.
  • the mounting unit 400 allows at least the power input unit 280 of the harvesting device 200 to be mounted on the traveling body 100. Therefore, the harvesting device 200 is mounted so that at least the power input unit 280 is disposed on the traveling body 100. This allows the harvesting device 200 to receive power from the traveling body 100 on the traveling body 100.
  • the harvesting device 200 is mounted so that at least a portion of the drive unit (such as the threshing unit 240) that is driven by the power input from the power input unit 280 is disposed on the traveling body 100 (above the vehicle body 2).
  • the harvesting device 200 is disposed so that at least a portion of the harvesting unit 210 is located below the upper end of the vehicle body 2 (near the ground).
  • the harvesting device 200 is constructed separately from the running body 100, and can be attached and detached to the running body 100. As described above, the harvesting device 200 can be made smaller and lighter, which makes it easier to attach and detach the harvesting device 200 to the running body 100.
  • Figure 17 shows a first example of the mounting structure of the harvesting device 200 to the traveling body 100.
  • the attachment/detachment mechanism 400 has a convex portion 401 that protrudes upward from the top surface of the traveling body 100 (top surface of the vehicle body 2).
  • the top of the vehicle body 2 is provided with a convex portion 401 that protrudes upward.
  • the convex portion 401 is configured to be able to rise and fall. Specifically, the convex portion 401 rises and falls by raising and lowering the vehicle body 2.
  • the convex portion 401 has a first tapered surface 402 that is inclined so that the width of the convex portion 401 narrows toward the top.
  • the first tapered surface 402 is inclined so that the width of the convex portion 401 in the front-to-back and left-to-right directions narrows toward the top.
  • the convex portion 401 is conical or frustum-shaped
  • the first tapered surface 402 is composed of one curved surface.
  • the convex portion 401 is pyramidal or frustum-shaped
  • the first tapered surface 402 is composed of multiple flat surfaces. For example, if the convex portion 401 is quadrangular pyramidal or frustum-shaped, the first tapered surface 402 is composed of four flat surfaces (front, rear, left, and right).
  • the convex portion 401 is provided as a single protuberance that covers the entire or nearly entire surface of the top surface of the vehicle body 2.
  • the convex portion 401 is provided as a protuberance that covers the entire or nearly entire surface of the top surface of the vehicle body 2.
  • the convex portion 401 may be a protuberance provided at multiple locations on the top surface of the vehicle body 2.
  • the recess 501 can be formed, for example, in the substrate 270 of the harvesting device 200 (see Figures 11 to 14 and 16). In this case, the thickness of the substrate 270 is set to a sufficient thickness to form the recess 501. However, the recess 501 may also be formed on the underside of a part of the harvesting device 200 other than the substrate 270.
  • the recess 501 has a second tapered surface 502.
  • the second tapered surface 502 has a shape corresponding to the first tapered surface 402 of the protrusion 401.
  • the second tapered surface 502 abuts (comes into surface contact with) the first tapered surface 402 when the harvesting device (working device) 200 is attached to the vehicle body 2.
  • the first tapered surface 402 is preferably provided over the entire convex portion 401 (from the upper end to the lower end), but it is sufficient that it is provided at least on the upper portion including the upper end of the convex portion 401 (from the upper end to the middle in the vertical direction).
  • the second tapered surface 502 is preferably provided over the entire concave portion 501 (from the lower end to the upper end), but it is sufficient that it is provided at least on the upper portion including the upper end of the concave portion 501 (from the upper end to the middle in the vertical direction).
  • Figure 18 shows a second example of the mounting structure of the harvesting device 200 to the traveling body 100.
  • the attachment/detachment mechanism 400 has a protrusion 403 that protrudes upward from the upper part of the traveling body 100.
  • the protrusion 403 protrudes upward from the upper part of the vehicle body 2.
  • the protrusion 403 protrudes upward from multiple points on the top surface of the vehicle body 2.
  • the protrusion 403 can be provided near each of the four corners of the top surface of the vehicle body 2.
  • the number and positions of the protrusions 403 can be changed as appropriate depending on the type and size of the harvesting device 200.
  • the protrusion 403 is, for example, a rod-shaped (cylindrical, conical, truncated conical, etc.) pin.
  • the protrusion 403 may be fixed to the upper surface of the traveling body 100 (the upper surface of the vehicle body 2), or may be provided so as to be retractable from the upper surface of the traveling body 100 (the upper surface of the vehicle body 2).
  • the pin 404 constituting the protrusion 403 is connected to an upward rod 406 of a cylinder device 405.
  • the cylinder device 405 is, for example, a hydraulic cylinder that can be driven by hydraulic oil supplied from the above-mentioned hydraulic pump.
  • the multiple (all) pins 404 that make up the protrusion 403 are erected on a single plate 407, and this plate 407 is connected to an upward rod 406 of a cylinder device 405.
  • This allows the multiple pins 404 to move simultaneously with the plate 407 and appear and disappear by moving (expanding) the rod 406 in the vertical direction.
  • a configuration in which multiple cylinder devices 405 are provided and the multiple pins 404 are individually connected to the rods 406 of the cylinder devices 405 may also be used.
  • the detachable part 500 is composed of an insertion hole 503 provided on the lower part of the harvesting device 200.
  • the shape of the insertion hole 503 corresponds to the shape of the protrusion 403 of the detachable mechanism 400.
  • the number and positions of the insertion holes 503 correspond to the number and positions of the protrusions 403 of the detachable mechanism 400.
  • the insertion holes 503 can be formed, for example, in the base plate 270 of the harvesting device 200.
  • the insertion holes 503 are provided near each of the four corners of the upper surface of the vehicle body 2 (see FIG. 6).
  • the number and positions of the insertion holes 503 can be changed according to the number and positions of the protrusions 403.
  • the insertion holes 503 may also be formed in a part of the harvesting device 200 other than the base plate 270.
  • the harvesting device 200 can be mounted on the top of the vehicle body 2 by inserting the protrusion 403 provided on the top of the vehicle body 2 into the insertion hole 503 provided on the bottom of the harvesting device 200.
  • the harvesting device 200 can be detached from the top of the vehicle body 2 by removing the protrusion 403 from the insertion hole 503.
  • the insertion hole 503 is placed above the protrusion 403, and then the vehicle body 2 is raised or the harvesting device 200 is lowered, so that the protrusion 403 can be inserted into the insertion hole 503.
  • the vehicle body 2 is lowered or the harvesting device 200 is raised, so that the protrusion 403 can be removed from the insertion hole 503.
  • the detachable portion 500 is composed of a groove 505 provided in the harvesting device 200.
  • the groove 505 can be formed, for example, in the substrate 270.
  • the substrate 270 is provided with a lower left portion 271 that protrudes downward from the left portion of the lower surface of the substrate 270 and extends in the front-rear direction, and a lower right portion 272 that protrudes downward from the right portion of the lower surface of the substrate 270 and extends in the front-rear direction.
  • the groove 505 is formed on the inner surface (right surface) of the lower left portion 271 and the inner surface (left surface) of the lower right portion 272.
  • the groove 505 may be formed in a portion of the harvesting device 200 other than the substrate 270.
  • the upper and lower surfaces of the protrusion 411 are preferably tapered surfaces such that the vertical width of the protrusion 411 narrows toward the outer side of the protrusion 411 (the side facing the groove 505).
  • the upper and lower surfaces of the groove 505 are preferably tapered surfaces such that the vertical width of the groove 505 widens toward the inner side of the groove 505 (the side facing the protrusion 411).
  • the attachment/detachment mechanism 400 has a locking mechanism 420.
  • the locking mechanism 420 is a mechanism that fixes the traveling machine body 100 and the harvesting device 200.
  • the locking mechanism 420 is a mechanism that fixes the vehicle body 2 and the harvesting device 200.
  • 24 and 25 are diagrams showing an example of the configuration of the locking mechanism 420 and the fixed part 430 fixed by the locking mechanism 420.
  • the locking mechanism 420 is provided on the traveling machine body 100 (specifically, the vehicle body 2).
  • the fixed part 430 is provided on the harvesting device 200.
  • Figure 24 is a vertical cross-sectional view of the locking mechanism 420 and the fixed part 430 as viewed from the side.
  • Figure 25 is a vertical cross-sectional view of the locking mechanism 420 and the fixed part 430 as viewed from the front. Hatching has been omitted from Figures 24 and 25 to simplify the drawings. Note that the illustrated locking mechanism 420 and fixed part 430 are merely an example, and the configuration of the locking mechanism 420 and fixed part 430 is not limited to this.
  • the locking mechanism 420 is provided on the upper part of the vehicle body 2.
  • the locking mechanism 420 has a locking member 421 that is arc-shaped in a side view, and a rotating shaft 422 that serves as the center of rotation of the locking member 421.
  • a recess 2a is formed on the upper surface of the vehicle body 2, and the locking member 421 and the rotating shaft 422 are disposed within this recess 2a.
  • the rotating shaft 422 extends in the left-right direction and rotates around an axis in the left-right direction.
  • the rotating shaft 422 is directly or indirectly connected to the output shaft of a motor (not shown), and rotates when driven by the motor.
  • the locking member 421 and the rotating shaft 422 are connected via a connecting part 423. As a result, the locking member 421 rotates around the rotating shaft 422 as the rotating shaft 422 rotates.
  • the fixed part 430 is provided on the lower part of the base plate 270 of the harvesting device 200.
  • the fixed part 430 has a fixed shaft 431 that extends in the left-right direction.
  • a recess 270a is formed on the lower surface of the base plate 270, and the fixed shaft 431 is disposed within this recess 270a.
  • the recess 2a formed on the upper surface of the vehicle body 2 and the recess 270a formed on the lower surface of the base plate 270 are positioned so that they overlap in the vertical direction when the harvesting device 200 is attached to the upper part of the vehicle body 2.
  • Figure 26 shows the state when the locking mechanism 420 is not activated (left image) and the state after the locking mechanism 420 has been activated (right image).
  • the engaging member 421 of the locking mechanism 420 is in the recess 2a of the vehicle body 2 and does not protrude from the top surface of the vehicle body 2. In this state, the engaging member 421 is not engaged with the fixed shaft 431 of the fixed part 430.
  • the motor is driven to rotate the engaging member 421 together with the rotating shaft 422 (see arrow R1), and the engaging member 421 protrudes upward from the recess 2a of the vehicle body 2 and engages with the fixed shaft 431 in the recess 270a of the base plate 270. This fixes the traveling body 100 (specifically the vehicle body 2) and the harvesting device 200.
  • the locking mechanism 420 fixes the traveling body 100 (specifically, the vehicle body 2) and the harvesting device 200 with the convex portion 401 provided on the vehicle body 2 inserted into the concave portion 501 provided on the harvesting device 200.
  • the locking mechanism 420 fixes the traveling body 100 (specifically, the vehicle body 2) and the harvesting device 200 with the protrusion 403 provided on the vehicle body 2 inserted into the insertion hole 503 provided on the harvesting device 200.
  • the locking mechanism 420 fixes the traveling body 100 (specifically, the vehicle body 2) and the harvesting device 200 with the protrusion 504 provided on the harvesting device 200 inserted into the groove portion 408 provided on the vehicle body 2.
  • the locking mechanism 420 fixes the traveling body 100 (specifically the vehicle body 2) and the harvesting device 200 in a state in which the protrusion 411 on the vehicle body 2 is inserted into the groove 505 on the harvesting device 200.
  • the locking mechanism 420 may be a mechanism for fixing the movable frame 32 attached to the vehicle body 2 and the harvesting device 200.
  • the locking mechanism 420 is provided on the movable frame 32.
  • the traveling body 100 and the harvesting device 200 are fixed by fixing the movable frame 32 and the harvesting device 200.
  • the traveling body 100 can be provided with the convex portion 401 of the first example and the protruding portion 403 of the second example
  • the harvesting device 200 can be provided with the concave portion 501 of the first example and the insertion hole 503 of the second example.
  • the vehicle body 2 of the traveling machine body 100 is equipped with an attachment/detachment mechanism 400 that enables the working device (harvesting device) 200 to be attached and detached to the vehicle body 2.
  • the attachment/detachment mechanism 400 has the locking mechanism 420 described above.
  • the attachment/detachment mechanism 400 has a locking mechanism 420 that fixes the working device (harvesting device) 200 to the vehicle body 2 when the working device (harvesting device) 200 is placed on the vehicle body 2.
  • Figures 27 to 47 show an example of a method of attaching the harvesting device 200 to the traveling body 100.
  • a method of attaching the harvesting device 200 to the traveling body 100 will be explained based on Figures 27 to 47. Note that the traveling body 100 and the harvesting device 200 shown in Figures 27 to 47 are simplified versions of the traveling body 100 and the harvesting device 200 shown in Figures 1 to 5 and 10 to 14.
  • Figures 27 to 31 show a first example of a method for mounting the harvesting device 200 to the traveling body 100.
  • the first example mounting method is described below.
  • the first example mounting method is used when the traveling body 100 and the harvesting device 200 have the mounting structure of the first example described above.
  • the vehicle body 2 can be raised and lowered by the height change mechanism (lifting mechanism) 90 described above.
  • the harvesting device 200 is held in a state where it is raised above the ground G1 (holding step). Specifically, the harvesting device 200 is placed on the stand 150, so that the harvesting device 200 is held in a state where it is raised above the ground G1.
  • the mounting method of the first example described above can also be used when the traveling body 100 and the harvesting device 200 have the mounting structure of the second example.
  • the mounting step the protrusion 403 provided on the vehicle body 2 is inserted into the insertion hole 503 provided on the harvesting device 200, and the locking mechanism 420 is operated with the protrusion 403 inserted into the insertion hole 503, thereby fixing the harvesting device 200 to the top of the vehicle body 2.
  • the mounting method is the same as when the traveling body 100 and the harvesting device 200 have the mounting structure of the first example.
  • the harvester 1A is configured so that power is supplied to the harvesting device 200 from a power unit 4 mounted on the traveling body 100 (see FIG. 48).
  • the work vehicle 1 is equipped with a power transmission mechanism 600 capable of transmitting power generated from the power unit 4 to the harvesting device 200.
  • the power transmission mechanism 600 outputs the power generated from the power unit 4 above the traveling body 100 so that it can be transmitted to the harvesting device 200.
  • Figure 50 is a diagram showing the work vehicle 1 equipped with the power transmission mechanism 600 of the first example, and the harvesting device 200 attached to the traveling machine body 100 of this work vehicle 1.
  • the power transmission mechanism 600 of the first example has an upward output shaft 601 that extends upward and outputs the power generated by the power unit 4 above the traveling body 100.
  • the upward output shaft 601 extends vertically or approximately vertically.
  • the work vehicle 1 equipped with the power transmission mechanism 600 of the first example is equipped with, in addition to the upward output shaft 601, a lateral output shaft 602 that outputs the power generated by the power unit 4 rearward.
  • the lateral output shaft 602 extends horizontally or approximately horizontally.
  • the front end of the lateral output shaft 602 is connected to the work system motor 6 of the power unit 4.
  • the rear end of the lateral output shaft 602 protrudes rearward from the vehicle body 2.
  • the lateral output shaft 602 is capable of supplying power to a work device (second work device) attached to the lifting device 10 consisting of a three-point linkage mechanism.
  • the upward output shaft 601 branches off from the middle of the horizontal output shaft 602 and extends upward. Specifically, a first bevel gear 603 is attached to the middle of the horizontal output shaft 602 in the extension direction (front-rear direction). A second bevel gear 604 that meshes with the first bevel gear 603 is attached to the lower end of the upward output shaft 601.
  • the upward output shaft 601 branches off from the middle of the horizontal output shaft 602 as the first bevel gear 603 and the second bevel gear 604 mesh with each other.
  • the upper end of the upward output shaft 601 is located near the upper end of the vehicle body 2.
  • a shaft coupling 605 that can connect the shafts to each other is provided to the upper end of the upward output shaft 601.
  • the power generated by the power unit 4 is transmitted to the horizontal output shaft 602, which rotates around its axis in the front-to-rear direction.
  • the rotation of the horizontal output shaft 602 is transmitted from the first bevel gear 603 to the second bevel gear 604. This causes the upward output shaft 601 to rotate around its axis in the up-down direction.
  • the harvesting device 200 mounted on the traveling body 100 of the work vehicle 1 equipped with the power transmission mechanism 600 of the first example has a power input unit 280 to which the power output from the power transmission mechanism 600 to the upper part of the traveling body 100 is input.
  • the harvesting device 200 has a downward input shaft 281 connected to the upward output shaft 601 as the power input unit 280. The lower end of the downward input shaft 281 protrudes downward from the harvesting device 200.
  • the upward output shaft 601 and the downward input shaft 281 are connected via a shaft coupling 605 (see Figure 51).
  • the rotational power output from the upward output shaft 601 is input to the downward input shaft 281.
  • the drive parts of the harvesting device 200 (harvesting section 210, conveying section 220, threshing section 240, discharge section 260, release section 250) are driven by the power input to the downward input shaft 281.
  • the lifting device 10 changes the orientation of the lateral output shaft 602 to an upward orientation that extends upward.
  • the lifting device 10 rises relative to the vehicle body 2, thereby changing the orientation of the lateral output shaft 602 to an upward orientation that extends upward.
  • the lateral output shaft 602 is changed from a lateral orientation to an upward orientation as the lifting device 10 rises.
  • the lateral output shaft 602 is changed from an upward orientation to a lateral orientation as the lifting device 10 descends.
  • the portion of the lateral output shaft 602 that protrudes from the traveling body 100 (vehicle body 2) (hereinafter referred to as the "protruding portion of the lateral output shaft 602") has a configuration in which multiple shafts are connected by joints 611.
  • the joints 611 are configured to be bendable at least in the vertical direction.
  • a universal joint that can bend in multiple directions is preferably used as the joints 611.
  • the joints 611 will be described as being universal joints. However, the joints 611 are not limited to being universal joints.
  • the multiple shafts include at least a first shaft 612 located on the base end side (vehicle body 2 side) of the protruding portion of the lateral output shaft 602, and a second shaft 613 located on the tip end side (opposite the vehicle body 2 side) of the protruding portion of the lateral output shaft 602.
  • the number of shafts constituting the horizontal output shaft 602 may be two or three or more.
  • the number of universal joints 611 can be increased according to the number of shafts constituting the horizontal output shaft 602.
  • the horizontal output shaft 602 has four shafts connected by three universal joints 611.
  • the horizontal output shaft 602 in the illustrated example has two more shafts (third shaft 614 and fourth shaft 615) between the first shaft 612 and second shaft 613 (see FIG. 52).
  • the protruding portion of the horizontal output shaft 602 can bend at the universal joint 611. By bending the protruding portion of the horizontal output shaft 602 at the universal joint 611, the second shaft 613 can rotate upward relative to the first shaft 612.
  • the protruding portion of the horizontal output shaft 602 is connected to the lifting device 10. More specifically, the protruding portion of the horizontal output shaft 602 is connected to the lower link 10b and/or the top link 10c of the lifting device 10. In the example shown in FIG. 56, the protruding portion of the horizontal output shaft 602 is connected to the lower link 10b via a connecting member 617, and to the top link 10c via a connecting member 618. As a result, the protruding portion of the horizontal output shaft 602 rises and falls in conjunction with the rise and fall of the lifting device 10 (the rise and fall of the lower link 10b and the top link 10c). However, it is sufficient that the protruding portion of the horizontal output shaft 602 is connected to at least one of the lower link 10b and the top link 10c.
  • the protruding portion of the horizontal output shaft 602 bends at the universal joint 611, and the second shaft 613 rotates upward or downward relative to the first shaft 612.
  • the second shaft 613 rotates upward relative to the first shaft 612.
  • the horizontal output shaft 602 (specifically, the second shaft 613) is changed to an upward orientation that extends upward (see Figure 53).
  • the tip of the protruding portion of the horizontal output shaft 602 (the tip of the second shaft 613) is provided with a shaft coupling 616 that can connect the shafts together.
  • a shaft coupling 616 that can connect the shafts together.
  • the protruding portion of the horizontal output shaft 602 is disposed below the top link 10c of the lifting device 10 and above the lower link 10b (see FIG. 52, etc.).
  • the protruding portion of the horizontal output shaft 602 is disposed at a position offset from the top link 10c in the left-right direction (see FIG. 56). This makes it possible to prevent the horizontal output shaft 602 from interfering with the top link 10c when the lower link 10b and the top link 10c are raised or lowered to change the orientation of the horizontal output shaft 602 (specifically, the second shaft 613) upward.
  • top link 10c and/or the lower link 10b may also be configured with multiple members connected by a bendable joint (universal joint) in the same manner as the horizontal output shaft 602. This allows the top link 10c and/or the lower link 10b to bend midway in the length direction, making it easy to change the horizontal output shaft 602 connected to the lower link 10b and/or the top link 10c (specifically, the second shaft 613) to be upwardly oriented.
  • a bendable joint universal joint
  • the harvesting device 200 mounted on the traveling body 100 of the work vehicle 1 equipped with the power transmission mechanism 600 of the second example has a power input unit 280 to which the power output from the power transmission mechanism 600 to the upper part of the traveling body 100 is input.
  • the harvesting device 200 has, as the power input unit 280, a downward input shaft 281 connected to a lateral output shaft 602 that has been changed to face upward. The lower end of the downward input shaft 281 protrudes downward from the harvesting device 200.
  • the harvesting device 200 when the harvesting device 200 is attached to the upper part of the traveling body 100 with the lateral output shaft 602 (second shaft 613) of the traveling body 100 of the work vehicle 1 equipped with the second example power transmission mechanism 600 changed to an upward orientation extending upward, the lateral output shaft 602 (second shaft 613) and the downward input shaft 281 are connected via a shaft coupling 616 (see FIG. 55). As a result, the rotational power output from the lateral output shaft 602 changed to an upward orientation is input to the downward input shaft 281.
  • the driving parts of the harvesting device 200 (harvesting section 210, conveying section 220, threshing section 240, discharge section 260, release section 250) are driven by the power input to the downward input shaft 281.
  • the lifting device 10 may also lift the second work device 300 located in front of the traveling body 100.
  • the second work device 300 located in front of the traveling body 100 can be lifted by attaching the second work device 300 to the lifting device 10 provided at the front of the vehicle body 2.
  • the lateral output shaft 602 outputs the power generated by the power unit 4 forward, and the change mechanism 610 changes the lateral output shaft 602 that outputs the power forward to an upward direction that extends upward.
  • Figure 57 shows the running body 100 of a work vehicle 1 equipped with a third example of a power transmission mechanism 600, and the harvesting device 200 attached to this running body 100.
  • the third example of the power transmission mechanism 600 has a gear transmission mechanism 620 that extracts power from the middle of the lateral output shaft 602 and outputs it above the traveling body 100.
  • the gear transmission mechanism 620 includes a plurality of gears.
  • the gear transmission mechanism 620 includes a first gear 621, a second gear 622, a third gear 623, and a fourth gear 624.
  • the first gear 621 and the second gear 622 are bevel gears.
  • the first gear 621 is attached to the middle of the horizontal output shaft 602 and rotates around the axis of the horizontal output shaft 602.
  • the second gear 622, the third gear 623, and the fourth gear 624 are arranged in a line in the vertical direction.
  • the second gear 622 meshes with the first gear 621. By meshing the first gear 621 and the second gear 622, power can be taken from the middle of the horizontal output shaft 602.
  • the third gear 623 is a spur gear located above the second gear 622 and meshes with the second gear 622.
  • the fourth gear 624 is a spur gear located above the third gear 623 and meshes with the third gear 623.
  • the fourth gear 624 is located near the upper end of the vehicle body 2.
  • the fourth gear 624 is an output gear 624 that outputs the power extracted from the middle of the lateral output shaft 602 above the traveling body 100.
  • the number of gears constituting the gear transmission mechanism 620 can be changed (increased or decreased) as appropriate.
  • the number of three gears (first gear 621, third gear 623, fourth gear 624) that are aligned vertically and meshed can be increased or decreased.
  • the diameter of the gears is adjusted so that the uppermost gear (output gear) is positioned near the upper end of the vehicle body 2.
  • the harvesting device 200 mounted on the running body 100 of the work vehicle 1 equipped with the third example of the power transmission mechanism 600 has a power input unit 280 to which the power output from the power transmission mechanism 600 to the upper part of the running body 100 is input.
  • the harvesting device 200 has an input gear 282 as the power input unit 280, which meshes with the output gear 624 (fourth gear 624) of the gear transmission mechanism 620.
  • the above-mentioned configuration of the digging device is only one example, and the configuration of the digging device is not limited to the above-mentioned configuration.
  • FIG. 62 is a diagram showing an example (first example) of a power transmission path for the harvester 1A when the harvesting device 200 is a digging device that digs up crops.
  • the harvesting device 200 is a digging device that digs up crops.
  • power is supplied to the harvesting device (digging device) 200 from the power unit 4 mounted on the traveling body 100.
  • the power generated by the power unit 4 is also supplied to the traveling device 3 of the traveling body 100 (see arrow P1).
  • Figures 64 and 65 show the power transmission path of the harvester 1A when the harvesting device 200 is a pull-out device that pulls out crops.
  • the harvesting device 200 is equipped with a pull-out section as the harvesting unit 210 (hereinafter referred to as the "pulling unit 210"), a transport section 220, and a storage section 230.
  • the pulling-out unit 210 has a clamping section that clamps the stems and leaves of crops (carrots, radishes, etc.) planted in a field from the left and right.
  • the pulling-out unit 210 pulls out the crop by pulling up the stems and leaves clamped by the clamping section along an inclined surface as it moves forward.
  • the pulling-out unit 210 is located at the front of the harvesting device 200 (the front of the harvester 1A).
  • the pulling-out unit 210 is provided at the front (front wheel side) or rear (rear wheel side) of the lower part of the running body 100.
  • the conveying section 220 is equipped with a conveyor that conveys the crops pulled out by the pulling section 210 upward (above the running body 100).
  • the front part of the conveying section 220 is connected to the pulling section 210.
  • the conveying section 220 extends diagonally upward from the part connected to the pulling section 210 to above the running body 100.
  • the conveying section 220 conveys the crops pulled out by the pulling section 210 from the front (or rear) of the lower part of the running body 100 to above the running body 100.
  • the rear part of the conveying section 220 is connected to the storage section 230.
  • the storage section 230 stores the crops transported by the conveying section 220.
  • the storage section 230 is located above the running body 100.
  • the above-mentioned configuration of the extraction device is just one example, and the configuration of the extraction device is not limited to the above-mentioned configuration.
  • the extraction unit 210 may be configured to pull up the stem and leaf portion clamped by the clamping unit by extending and retracting the rod of the cylinder device.
  • Figure 64 is a diagram showing an example (first example) of a power transmission path for the harvester 1A when the harvesting device 200 is a removal device.
  • power is supplied to the harvesting device (removal device) 200 from the power unit 4 mounted on the traveling body 100.
  • the power generated by the power unit 4 is also supplied to the traveling device 3 of the traveling body 100 (see arrow P1).
  • the power supplied from the power unit 4 to the harvesting device (pulling device) 200 is input to the power input section 280 of the harvesting device (pulling device) 200.
  • the harvesting device (pulling device) 200 can perform the harvesting work (pulling work) based on the power supplied from the power unit 4 mounted on the traveling body 100.
  • FIG. 65 is a diagram showing another example (second example) of the power transmission path of the harvester 1A when the harvesting device 200 is a pull-out device.
  • the harvesting device (pulling device) 200 has a separate power unit 201 that generates power for performing the harvesting work (pulling work) in addition to the power unit 4 mounted on the traveling body 100. Therefore, as shown by arrow P3, the drive unit (conveyor unit 220) of the harvesting device (pulling device) 200 is supplied with power from the power unit 201 possessed by the harvesting device (pulling device) 200. This drives the drive unit (conveyor unit 220) of the harvesting device 200, allowing the harvesting work (pulling work) to be performed.
  • a preferred embodiment of the present invention provides a method for mounting a work vehicle 1, 1A and a work implement 200 as described below.
  • a work vehicle 1 comprising a vehicle body 2, a traveling device 3 that supports the vehicle body 2 so that the vehicle body 2 can travel, and a lifting mechanism 90 that can raise and lower the vehicle body 2, the lifting mechanism 90 raising the vehicle body 2 with the vehicle body 2 positioned below the work device 200, and attaching the work device 200.
  • the work vehicle 1 makes it possible to mount the work device 200 above the vehicle body 2. Specifically, the vehicle body 2, which is located below the work device 200, is raised by the lifting mechanism 90, so that the work device 200 can be easily mounted above the vehicle body 2.
  • the lifting mechanism 90 detaches the working device 200 from the vehicle body 2 by lowering the working device 200 together with the vehicle body 2 toward the platform 150 from a state in which the working device 200 is mounted on the vehicle body 2 and positioned above the platform 150.
  • the work vehicle 1 makes it possible to detach the working device 200 mounted on the vehicle body 2. Specifically, by lowering the working device 200 mounted on the vehicle body 2 together with the vehicle body 2 toward the platform 150, the vehicle body 2 can be lowered leaving the working device 200 on the platform 150, and the working device 200 can be detached from the vehicle body 2.
  • the power unit 4 includes a battery 7 and motors 5, 6 driven by power supplied from the battery 7, and the lifting mechanism 90 lifts the vehicle body 2 on which the battery 7 and the motors 5, 6 are mounted to mount the work device 200.
  • (Item A5) A work vehicle 1 according to any one of items A1 to A4, in which the vehicle body 2 is provided with an attachment/detachment mechanism 400 that enables the working device 200 to be attached and detached to the vehicle body 2.
  • the attachment/detachment mechanism 400 allows the work device 200 to be attached to and detached from the vehicle body 2.
  • the work device 200 can be fixed to the vehicle body 2 by the locking mechanism 420 while the work device 200 is placed on the vehicle body 2. This makes it possible to reliably prevent the work device 200 from coming off the vehicle body 2 during work, etc.
  • (Item A7) A work vehicle 1 described in items A1 to A6, in which a convex portion 401 that protrudes upward is provided on the upper portion of the vehicle body 2, and a concave portion 501 into which the convex portion 401 fits when the work device 200 is attached to the vehicle body 2 is provided on the lower portion of the work device 200.
  • the recess 501 fits into the protrusion 401, so that the work device 200 can be securely attached to the upper part of the vehicle body 2.
  • the convex portion 401 has a first tapered surface 402 that is inclined so that the width of the convex portion 401 narrows toward the top, and the concave portion 501 has a second tapered surface 502 that abuts against the first tapered surface 402 when the working device 200 is attached to the vehicle body 2.
  • the second tapered surface 502 abuts against the first tapered surface 402, so that the work device 200 can be accurately positioned and attached to the upper part of the vehicle body 2.
  • the work vehicle 1 according to item A9 can be used for harvesting work by positioning the harvesting device 200 mounted on the upper part of the vehicle body 2 at a height suitable for cutting, digging, and uprooting crops.
  • a work vehicle 1 comprising a traveling body 100, a power unit 4 mounted on the traveling body 100, a mounting section 400 capable of mounting a work device 200 having a power input section 280 to which power is input to the traveling body 100, and allowing at least the power input section 280 to be mounted on the traveling body 100, and a power transmission mechanism 600 that outputs the power generated by the power unit 4 above the traveling body 100 so that it can be transmitted to the work device 200.
  • the power generated by the power unit 4 can be output above the traveling body 100 and transmitted to the working device 200. Specifically, the power generated by the power unit 4 can be transmitted to the working device 200 via the power input unit 280 mounted on the traveling body 100 by the mounting unit 400.
  • the power transmission mechanism 600 has an upward output shaft 601 that extends upward and outputs the power generated by the power unit 4 above the traveling body 100.
  • the power generated by the power unit 4 can be output above the traveling body 100 by the upward output shaft 601. Therefore, the power generated by the power unit 4 can be easily and reliably transmitted to the power input section 280 of the work device 200 mounted on the traveling body 100.
  • Item B3 A work vehicle 1 as described in Item B2, which is equipped with a lateral output shaft 602 that outputs the power generated by the power unit 4 forward, backward, or to the side, and the upward output shaft 601 branches off from the middle of the lateral output shaft 602 and extends upward.
  • the work vehicle 1 according to item B3 can extract the power generated by the power unit 4 from the middle of the horizontal output shaft 602 and transmit it to the upward output shaft 601 that extends upward.
  • (Item B4) A work vehicle 1 described in any of Items B1 to B3, which is equipped with a lateral output shaft 602 that outputs the power generated by the power unit 4 forward, backward, or to the side, and the power transmission mechanism 600 has a change mechanism 610 that can change the lateral output shaft 602 to an upward direction that extends upward.
  • Item B6 A work vehicle 1 described in Item B1, which is equipped with a lateral output shaft 602 that outputs the power generated by the power unit 4 forward, backward, or to the side, and the power transmission mechanism 600 has a gear transmission mechanism 620 that extracts power from the middle of the lateral output shaft 602 and outputs it above the traveling body 100.
  • the power generated by the power unit 4 can be taken from the middle of the lateral output shaft 602 by the gear transmission mechanism 620 and transmitted to the upper part of the traveling body 100.
  • Item B7 A work vehicle 1 described in Item B1, which is equipped with a lateral output shaft 602 that outputs the power generated by the power unit 4 forward, backward, or to the side, and the power transmission mechanism 600 has a belt transmission mechanism 630 that extracts power from the middle of the lateral output shaft 602 and outputs it above the traveling body 100.
  • the power output above the traveling body 100 can be input to the work device 200 attached to the attachment part 400 via the power input part 280.
  • the power output by the output pulley 631 to the upper side of the traveling body 100 can be input to the work device 200 attached to the attachment part 400 via the belt 633 and the input pulley 283.
  • a work vehicle 1A comprising a traveling body 100, a power unit 4 mounted on the traveling body 100, a work device 200 having a power input section 280 to which power is input, a mounting section 400 that allows the work device 200 to be mounted on the traveling body 100 and at least the power input section 280 to be mounted on the traveling body 100, and a power transmission mechanism 600 that outputs the power generated by the power unit 4 above the traveling body 100 so that it can be transmitted to the work device 200.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Soil Sciences (AREA)
  • Environmental Sciences (AREA)
  • Agricultural Machines (AREA)

Abstract

L'invention concerne un engin de chantier qui délivre de la puissance générée par un dispositif de puissance vers le haut à partir d'un corps de machine de déplacement de manière à pouvoir transmettre la puissance à un dispositif de travail. Un engin de chantier (1, 1A) comprend : un corps de machine de déplacement (100) ; un dispositif de puissance (4) monté sur le corps de machine de déplacement (100) ; une partie de fixation (400) qui permet la fixation d'un dispositif de travail (200), qui comprend une partie entrée de puissance (280) à laquelle de la puissance est entrée, au corps de machine de déplacement (100), la partie de fixation (400) permettant à au moins la partie entrée de puissance (280) d'être fixée sur le dessus du corps de machine de déplacement (100) ; et un mécanisme de transmission de puissance (600) pour délivrer de la puissance générée par le dispositif de puissance (4) vers le haut à partir du corps de machine de déplacement (100) de manière à pouvoir transmettre la puissance au dispositif de travail (200).
PCT/JP2024/022576 2023-12-27 2024-06-21 Engin de chantier Pending WO2025141908A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2023-220484 2023-12-27
JP2023220484 2023-12-27

Publications (1)

Publication Number Publication Date
WO2025141908A1 true WO2025141908A1 (fr) 2025-07-03

Family

ID=96217357

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2024/022576 Pending WO2025141908A1 (fr) 2023-12-27 2024-06-21 Engin de chantier

Country Status (1)

Country Link
WO (1) WO2025141908A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5661906A (en) * 1979-10-11 1981-05-27 Multinorm Bv Power transmitting and coupling device applying between agricultural tractor and trailed implement
US4738461A (en) * 1986-11-06 1988-04-19 Deere & Company Implement hitch adaptor and transmission assembly for allowing towing tractor to turn sharply
JPS63173504A (ja) * 1987-01-09 1988-07-18 井関農機株式会社 トラクタ−の動力取出装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5661906A (en) * 1979-10-11 1981-05-27 Multinorm Bv Power transmitting and coupling device applying between agricultural tractor and trailed implement
US4738461A (en) * 1986-11-06 1988-04-19 Deere & Company Implement hitch adaptor and transmission assembly for allowing towing tractor to turn sharply
JPS63173504A (ja) * 1987-01-09 1988-07-18 井関農機株式会社 トラクタ−の動力取出装置

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