JPH0956235A - Sorting conveyor operation device for self-propelled root crop harvester - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To reduce the burden of sorting work after replacement when replacing a container for storing harvested root vegetables. SOLUTION: In a self-propelled root vegetable harvester that conveys the root vegetables after digging to the rear and sorts the leaves by the sorting conveyor 50 after cutting the leaves, a sorting work clutch lever 51 for turning ON / OFF the driving of the sorting conveyor 50 is provided. A deceleration allowance mechanism K is provided between the main speed change lever 12 and a link mechanism 63 that connects the speed change arm 66a of the speed change device 66, and the deceleration allowance mechanism K and the selection work clutch lever 51 are interlocked to perform a selection. The work clutch lever 51 is decelerated when it is turned to the OFF side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention stores a root vegetable, in particular, a root vegetable after cutting by a self-propelled root vegetable harvester that mechanically harvests carrots in a container, and a burden on a worker who replaces the container. It relates to a configuration for reducing.

[0002]

2. Description of the Related Art Conventionally, a self-propelled root vegetable harvester for harvesting radish, carrots, etc. has been known. A driver's seat is arranged on one side of the upper part of the traveling device, and the other side is pulled out in parallel with the traveling direction. Place a conveyor, place a digging device consisting of a hoe-shaped subsoiler in the front part of this pulling conveyor, insert this digging device into the soil, dig up root vegetables from the soil below, and pull out The root part of the root vegetable is sandwiched from both sides by the belt of the conveyor, pulled out while transporting the root vegetable diagonally upward, a cutter is arranged at the rear end of the transport section, and the root portion of the root vegetable is cut by the cutter, The root vegetables dropped on the lower conveyor are laterally conveyed by a lateral feed roller and delivered to the selection conveyor, and the root vegetables after selection are stored in a storage container by the selection conveyor. A work clutch lever is arranged on the sorting conveyor, and only the sorting conveyor is stopped separately from the traveling of other transport conveyors and the machine body, and the containers packed between them are replaced.

[0003]

In the conventional root vegetable harvesting machine, when the work clutch lever is operated and only the selection conveyor is stopped, the pulling conveyor and the like are driven, and the extracted root vegetable is brought to the front of the selection conveyor. It is transported and accumulates there. Then, when the sorting work is started again, the accumulated root vegetables flow into the sorting conveyor all at once, and some of them cannot be completely sorted and are stored in the container. It was a burden. In addition, in order to replace the container full of root vegetables while the aircraft was operating at the normal harvesting speed, it was necessary to replace the heavy container in accordance with the traveling speed, resulting in heavy labor.

[0004]

The present invention uses the following means in order to solve the above problems. That is, the root vegetables after digging is transported backward, in a self-propelled root vegetable harvester that performs sorting with a sorting conveyor after cutting the leaves,
A sorting work clutch lever for turning ON / OFF the drive of the sorting conveyor is provided, and a deceleration allowing mechanism is arranged between a link mechanism connecting the main shift lever and a speed changing arm of the transmission, and the deceleration allowing mechanism and the sorting work clutch. The levers are interlocked and connected, and when the sorting work clutch lever is turned to the OFF side, the speed is reduced.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is an overall side view of a self-propelled root vegetable harvester of the present invention, FIG. 2 is a plan view of the same, FIG. 3 is a partial front view of a self-propelled root vegetable harvester having a dug cover, and FIG. 4 is a sensor. FIG. 5 is a front sectional view of the lower conveyor in which the above-mentioned arrangement is provided, FIG. 5 is a plan view showing the orthogonal conveying device, and FIG.

The overall construction of a self-propelled root vegetable harvester, especially a root vegetable harvester mainly for carrot harvesting, will be described with reference to FIGS. 1 and 2. First, a crawler-type traveling device 2 is disposed below a horizontally arranged main frame 1, and a driving operation unit A is disposed on the right front (right side in the traveling direction) of the main frame 1. I have. In the operation section A, a front column 4 is erected at the front part, and an operation lever 5 that allows simultaneous steering and excavation of the digging device F is projectingly provided on the upper part of the front column 4, and an accelerator lever 15 is provided on the side part. Has been done. A side column 3 is erected on a side portion of the front column 4, and a main transmission lever 12, an auxiliary transmission lever 13 and a work clutch lever 14 are projected on the side column 3. A driver's seat 7 is disposed behind the front column 4, an engine compartment is disposed below and rearward thereof, and an engine E is built in the engine compartment. The engine E includes an engine cover 6
Covered by A container table 8 is mounted on the upper part of the engine cover 6. In addition, a mission case 61 equipped with an HST transmission device behind the engine E.
The power of the engine E is input through the power transmission mechanism B, and the H is operated by operating the main shift lever 12.
The trunnion arm 66a of the ST transmission 66 is rotated so that the gear can be changed. However, the transmission is not limited to the HST transmission, and may be a belt type continuously variable transmission, a gear mesh type transmission, or the like.

A mechanism for digging root vegetables on the left side of the main frame 1, transporting the root vegetables backward, and cutting off the leaf portion,
A mechanism for accommodating the root portion in the container 10 is arranged at the rear portion thereof. That is, from the left front part of the main frame 1, a pulling device 40, a gauge wheel 43 for setting the height of the pulling conveyor 30, and a pulling device 4 for pulling up the root vegetables.
1. A digging device F for digging up root vegetables in the soil below the digging device 30, and a pulling conveyor 30 for holding and transporting the digged root vegetable leaf portion from the rear of the pulling device 40, behind the pulling conveyor 30. In addition, it comprises a cutting section 47 and a sorting conveyor 50 which conveys it to a side container.

Each device of this series of root vegetable harvesting device will be specifically described. First, the excavating device F is provided with rotating fulcrum shafts 20 and 21 on the upper and lower portions of the front end of the main frame 1.
The rear portions of the upper link 22 and the lower link 23 are pivotally supported by the pivot shafts 20 and 21, respectively, and the front portions of the upper link 22 and the lower link 23 are pivotally connected to the bracket 25. . The upper link 22 and the lower link 23 form a parallel link, and the upper end of the subsoiler 24 is fixed to the bracket 25. An eccentric cam is provided between the rear portion of the upper link 22 and the rotation fulcrum shaft 20.
0 makes it possible to drive from the output pulley 29 of the engine via a clutch and a belt, and by virtue of its rotation, the subsoiler 24 can be driven to vibrate, and the soil is vibrated from below the root vegetables to lift the root vegetables and pull out. To make it easier. A rear end of the lower link 23 is connected to an elevating cylinder 27, which is a hydraulic cylinder, via an arm 26.
By operating 7, it is possible to move up and down as indicated by F'in FIG.

Further, as shown in FIGS. 1 to 3, a pivot shaft 28 is laterally provided in the front-rear direction on the upper surface of the right end of the side column 3 and the cover shaft 29 is dug up and down. It is pivotally supported so that it can rotate in any direction. A torque spring 28a is externally fitted to the outer peripheral surface of the pivotal shaft 28 at a substantially central portion in the front-rear direction, and urges the excavation cover 29 to rotate downward. Further, a stopper (not shown) is arranged in the horizontal direction at the upper end portion of the side surface of the side column 3, and the torque spring 28
The digging cover 29 is rotated downward by the urging force of a and is held at a position flush with the upper surface of the side column 3 as shown in FIG. When the excavation device F rotates upward, the upper link 22 causes the excavation cover 2 to move.
9 and the excavation cover 29 is rotated upward,
As shown by the two-dot chain line 29 'in FIG. In this state, the worker does not hit the excavation device F from the driving operation unit A, and the mud and the like adhering to the excavation device F does not scatter to the driving operation unit A side and does not hit the operator.

The rear portion of the pull-out conveyor 30 is supported by a conveyor support frame 31, and the conveyor support frame 31 is supported by a support 32 projecting upward from the main frame 1. The pull-out conveyor 30 is rotated up and down by using the elevation of the excavator F to change the pull-out height or lift.

The pull-out conveyor 30 is a transfer frame 3
0L and 30R are arranged parallel to each other in the front-rear direction and inclined to the front and rear and rear and high, and the lower rear surface of the transport frames 30L and 30R is supported by the conveyor support frame 31. Pulleys 33 are provided on both front and rear ends of the transport frames 30L and 30R.・ 33
Is arranged, and the guide pulleys 34, 34 ,.
. Is arranged, and the conveyor belts 30a and 30a are provided on these pulleys.
Is provided, and an auxiliary transfer conveyor 36, in which a pair of left and right transfer belts is wound, is provided on the lower surface of the drawing conveyor 30 from the middle part to the rear part, and holds the root side of the root vegetable. Further, star wheels 37, 37 are arranged above the front end of the pulling conveyor 30 to scrape the root portion of the root vegetable.

An arm is projected forward from the front part of the pull-out conveyor 30 and a pulling-up device 40 is fixedly mounted so that its vertical height can be adjusted. In this raising device 40, belts protruding from the tines 40a, 40a ... Are wound so as to face each other in the vertical direction on the left and right sides, and the root portion of the root vegetable is pulled upward in the center. A pulling device 41 is arranged in front of the pulling device 40. The pulling device 4
1 is a tine 41a, 41a, ...
・ The protruding belts are arranged vertically on the front and back, and the leaves are pulled up from both the left and right sides of the harvested strip.

A gauge wheel 43 is arranged on the front side of the raising device 40. This gauge wheel 43
It is rotatably supported by the tip of a support arm 42 protruding laterally of the raising device 40. The gauge wheel 43 is
The support arm 42 is configured to be adjustable in vertical height, and when the height of the crawler and the gauge wheel 43 are different, the pretreatment device including the raising device 40 and the pulling device 41, and the height of the pulling conveyor 30. The height of the root can be adjusted, and the position of the root leaf can be adjusted.

A power transmission case 59 is arranged in the front-rear direction on the side surface of the machine body. In the rear part of the power transmission case 59, a rotation fulcrum shaft 60 is pivotally supported, and the power of the rotation fulcrum shaft 60 is sprocketed inside the transmission case 59.
Through each rake shaft that supports the front through the chain,
The belts of the raising device 40 and the raising device 41 are rotated.

At the rear of the pull-out conveyor 30 and the auxiliary transport conveyor 36, a leaf discharge conveyor 44 extends horizontally rearward in the front-rear direction. In the middle of the auxiliary transfer conveyor 36, a horizontal conveyor 45 is extended rearward in the front-rear direction horizontally, and below the horizontal conveyor 45, an upper guide body 46 for guiding root vegetables is provided. A cutting portion 47 is arranged at the rear end portion of the upper guide body 46. In this way, the leaf portion of the root vegetables conveyed by the auxiliary conveyance conveyer 36 is taken over by the horizontal conveyor 45 and conveyed backward while the upper end of the root portion of the root vegetables is positioned and cut by the cutting unit 47, and the root portion is arranged below it. The leaves are dropped onto the installed lower conveyor 48, and the leaves are conveyed to the leaves discharging conveyor 44, passed through the residual leaves discharging path 68a formed in the rear part, and dropped to the field scene. The residual leaf discharge path 68a is formed in the rear part of the cover 68 on which the pulling conveyor 30, the horizontal conveyor 45, and the leaf discharging conveyor 44 are mounted.

As shown in FIGS. 3 and 5, the lower conveyor 48 constituting the orthogonal conveyor comprises a wide belt conveyor, which is horizontally arranged from the lower rear of the auxiliary conveyor 36 to the rear thereof. A transverse feed roller 49 is disposed diagonally on the middle portion of 48.
The lower conveyor 48 drives the root vegetables to be sent backward, rotates the lateral feed roller 49 in accordance with the feeding, and arranges so that the root vegetables fall to the front part of the lateral feed roller 49. The rotation of the feed roller 49 and the drive of the lower conveyor 48 cause the root vegetables to drop onto the side selection conveyor 50.

Next, the sensor S provided on the lower conveyor 48 will be described with reference to FIG. The lower conveyor 48
As shown in FIG. 5, inside the wound belt 55, the contact plates 56 are arranged obliquely along the direction in which the transverse feed roller 49 is arranged or in the front-back direction according to the width thereof. The corresponding contact plate 56 is urged upward by springs 57, ..., And supports the belt 55 from below. The springs 57, 57 ...
It is fixed to the upper surface of a fixed plate 58 which is supported on both left and right side surfaces of 8. A sensor S is arranged between the springs 57, 57 on the upper surface of the fixed plate 58, and a contact portion 62 of the sensor S is provided.
Is arranged so as to project upward and come into contact with the lower surface of the contact plate 56. However, the sensor S may be an optical sensor, a proximity sensor, or the like as long as it can detect the lowering of the contact plate 56. The sensor S is connected to a stop device (switch, accelerator, etc.) of the engine E so that the engine E is stopped when the contact portion 62 is pushed. Therefore, when the root vegetables conveyed backward by the lower conveyor 48 are drawn into the space between the lateral feed rollers 49, the belt 55 is lowered and the contact plate 56 moves downward against the urging force of the springs 57. The contact plate 56 is lowered and the lower surface of the contact plate 56 contacts the contact portion 6 of the sensor S.
The engine E is stopped by abutting on 2. Therefore, the overload is prevented from being applied to the drive system such as the lateral feed roller 49.

The sorting conveyor 50 is composed of a wide roller conveyor 70 arranged in the left and right directions at the rear of the machine, and is designed to drop the soil adhering to the root vegetables while feeding it sideways. Further, as shown in FIG. 2, a container mounting table 54 is arranged below the terminal end of the sorting conveyor 50, and the container 10 is mounted on the container mounting table 54. In addition, container stands 53
・ ・ Is provided so that a container full of root vegetables or an empty container can be placed. Then, on the rear right side of the machine body (right side of the residual leaf discharge path 68a), at the same height position as the container mounting table 54, it is constituted by a pipe material or the like in a lattice shape, and the rear container table 38 is rotatable upward. Is pivotally supported.

In this structure, the residual leaf discharge path 68 is
Even when the residual leaves that have fallen from a fall onto the rear container stand 38, they can be dropped through the lattice-shaped gaps. Further, by matching the vertical height with the right side container stand 53, a full-packed container 10 can be easily slid by an exchange worker who works while riding on the right side container stand 53, and can get on and off the aircraft. Therefore, it is not necessary to go around to the container table 53 on the left side to pick up the container. Further, by mounting the empty container 10 on the rear container table 38, it is not necessary to take out the container 10 from the upper container table 8 and the work becomes easy, the number of empty containers 10 can be increased, and the continuous working distance can be increased. Can be long. Further, unnecessary root vegetables can be taken out from the selection conveyor 50 by manual selection and placed in the empty container 10. Further, by rotating the rear container base 38 upward, it is possible to work from the rear position of the machine body, which is a functional structure.

Next, the structure for transmitting power to the orthogonal conveying device will be described with reference to FIGS. 3 and 5. An input pulley 69 is arranged on the front side of the lower conveyor 48, and power is obtained from the engine E via a belt or the like. As shown in FIG. 3, the input pulley 69 is fixedly installed on a drive shaft 75 that is installed horizontally at the front end of the lower conveyor 48 and drives the lower conveyor 48. On the drive shaft 75, a first drive case 77 is arranged on the right side of the lower conveyor 48, and a second drive case 76 is arranged on the left side. Then, the lateral feed roller 49 is rotated from the drive shaft 75 via a bevel gear or the like in the first drive case 77.

Further, a cover 64 is provided so as to cover the rear surface of the sorting conveyor 50, and a safety lever 52, which is longer than the lower portion of the cover 64 in the machine width direction, is provided so as to project rearward and upward. The safety lever 52 is rotatably connected to a switch or wire for stopping the engine at the turning base of the safety lever 52 so that the engine stops when the safety lever 52 is turned forward. Then, a sorting work clutch lever 51 for stopping the sorting conveyor 50 is provided on the right side of the upper part of the cover 64, and an operator who sorts root vegetables from the rear of the machine or a container full of root vegetables on the side of the machine. 10
Sorting conveyor 50 by an auxiliary worker who replaces
You can stop the operation.

Next, the structure in which the sorting work clutch lever 51 and the main transmission lever 12 are connected via the deceleration allowing mechanism K in the present invention will be described with reference to FIG. First, the connection structure of the main transmission lever 12 and the HST transmission device 66 arranged in the transmission case 61 will be described. The main shift lever 12 is connected to the shift rod 6 via a link mechanism 63.
4. A deceleration allowance mechanism K is connected to the lower end of the speed change rod 64, a connecting rod 65 projects below the deceleration allowance mechanism K, and a lower end of the connecting rod 65 is connected to the HST.
It is connected to the trunnion arm 66 a of the transmission 66.

Next, the intermittent construction of the power of the sorting conveyor 50 by the sorting work clutch lever 51 will be described. As shown in FIG. 5, the sorting conveyor 50 includes a driving roller 71 that winds a roller conveyor 70 on the left and right ends.
A driven roller 72 is provided, and the drive roller 71 is fixedly mounted on a drive shaft 73 whose axial center is in the front-rear direction, and a drive pulley 73a is fixedly mounted on the front end of the drive shaft 73.
Power is transmitted to the drive pulley 73a from the second drive case 76 via a bevel gear and the like, and via a pulley and a belt 74. As shown in FIGS. 5 and 6, a tension roller 78 is abutted on the belt 74 at an intermediate portion,
By eliminating the tension of the tension roller 78, power transmission can be cut off. The tension roller 78 is pivotally supported on one end of a tension arm 79, a middle portion of the tension arm 79 is pivotally supported on a fulcrum shaft 91, and the other end of the tension arm 79 is connected to a spring 90 to apply tension. It is urged to give. Also,
A fastening pin 92 is provided in the middle of the tension arm 79 and is connected to the actuation wire 86.

On the other hand, the sorting work clutch lever 51
The lower end of the lever base 51a is pivotally supported by the fulcrum shaft 80,
A connecting pin 81 is provided at an upper position of the lever base 51a to connect the operating wire 86 and the operating wire 89. In the vicinity of the sorting work clutch lever 51,
A mounting plate 82 is provided, and an upper outer receiver 83a and a lower outer receiver 83b are fixed in the vertical direction. One end of the outer 84 is fixed to the lower outer receiver 83b on the lower side, and the other end of the outer 84 is extended to a position near the arm 92 and fixed to the outer receiver 85. The outer 8
4 the operation wire 86 is inserted into the inside of the operation wire 8
One end of 6 is fastened to the connecting pin 81, and the other end is fastened to the fastening pin 92 of the tension arm 79. Further, an outer receiver 87 is provided on a side portion of a lower portion of an opening 19b of a case 19 described later, the outer 88 is fixed between the outer receiver 87 and the upper outer receiver 83a, and an operating wire 89 is inserted into the outer 88. Then, one end of the actuating wire 89 is fixed to the connecting pin 81, and the other end is fixed to the end portion of the sliding plate 18 described later.

Next, in the structure of the deceleration allowing mechanism K, the sliding plate 18 is slidably inserted in the inside of the case 19 having a cylindrical shape, and the connecting rod 6 is attached to the lower surface of the sliding plate 18.
The upper end of 5 is fixed. The lower part of the connecting rod 65 penetrates a hole 19a opened in the lower surface of the case 19 and extends downward, and the lower end of the connecting rod 65 is connected to the trunnion arm 66a. Further, a compression spring 17 is provided between the lower surface of the sliding plate 18 and the lower surface inside the case 19,
The sliding plate 18 is biased upward by the compression spring 17. An opening 19b is provided on the side surface of the case 19, one end of the sliding plate 18 is projected laterally from the opening 19b, and the actuation wire 89 is fixed to the end. However, the deceleration allowance mechanism K is not limited to the configuration using the case and the spring, and a link and a spring, an elastic body, or the like can be used. Further, the rotation of the sorting work clutch lever is detected to detect the cylinder or the cylinder. It can also be configured to drive a solenoid, a motor or the like to decelerate.

With this configuration, when harvesting work is performed while the machine body is traveling forward, the work clutch lever 14 is turned to the "on" side and the main transmission lever 12 is tilted to the forward side. 19, the sliding plate 18 and the connecting rod 65 are lifted via the compression spring 17,
The trunnion arm 66a is rotated upward, the speed is changed to the forward side, and the vehicle travels forward. Then, when the container 10 becomes full and needs to be replaced, the sorting work clutch lever 51 is rotated in the OFF direction as indicated by the chain double-dashed line in the figure to stop the sorting conveyor 50, and the operating wire 86 is pulled. Then, the tension arm 79 rotates upwards against the urging force of the spring 90 to move the belt 7
4, the sorting conveyor 50 is no longer driven.

At the same time, the actuating wire 89 is pulled so that the case 19 is kept at a constant position (the main gear shift lever 12 is held at its pivot position), and only the sliding plate 18 is moved. Is slid downward in the range of the opening 19b, and the trunnion arm 66a is rotated in the neutral direction via the connecting rod 65 and decelerated as in 18 '. In this way, the traveling speed is reduced at the same time when the sorting conveyor 50 is stopped, and the excavation and transport of root vegetables is also reduced, so that the accumulated root vegetables are reduced.

When the sorting work clutch lever 51 is returned to the ON direction after the container 10 is replaced, the operating wire 86 is returned and the tension arm 79 causes the spring 9 to move.
The tension is applied by 0 to apply tension to drive the sorting conveyor 50, and at the same time, the sliding plate 18 is returned to the original position by the urging force of the compression spring 17 while the position of the case 19 is held, and the trunnion arm 66a is moved. Also returns to the original position, and the aircraft can run at the speed before the operation of the sorting work clutch lever 51.

[0029]

Since the present invention is constructed as described above,
It has the following effects. That is, in the work of exchanging a container full of root vegetables after sorting with an empty container, when the sorting work clutch lever is operated to stop the sorting conveyor, the traveling speed of the aircraft is also reduced at the same time, and the variation of the aircraft is small. The container can be easily replaced, and the slower speed reduces the yield.
When the root vegetables staying on the lower conveyor etc. are reduced and the sorting work clutch lever is returned and the sorting work is started again, the amount of root vegetables flowing on the sorting conveyor is a little larger and the burden of the sorting work after replacement is reduced. be able to. In addition, by simply returning the sorting work clutch lever after replacement, the traveling speed of the machine can be returned to the original speed, there is no need to operate the gear shift lever, the previous work speed can be protected, and workability and operability can be improved. Can be improved.

[Brief description of drawings]

FIG. 1 is an overall side view of a self-propelled root vegetable harvester of the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a partial front view of a self-propelled root vegetable harvester provided with a dug cover.

FIG. 4 is a front cross-sectional view of a lower conveyor provided with a sensor.

FIG. 5 is a plan view showing the orthogonal transport device.

FIG. 6 is a view showing a connection structure between a sorting work clutch and a transmission.

[Explanation of Codes] A Operation Operating Unit E Engine K Deceleration Allowance Mechanism 12 Main Shift Lever 17 Compression Spring 18 Sliding Plate 19 Case 50 Sorting Conveyor 51 Work Clutch Lever 61 Mission Case 65 Connecting Rod 66 HST Speed Change Mechanism 87 Outer Receiver 89 Operation wire

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Tomoyoshi Hirose, 1-32, Chaya-cho, Kita-ku, Osaka City, Osaka Prefecture Yanmar Agricultural Machinery Co., Ltd. (72) Shigeki Murata, 32-32, Chaya-cho, Kita-ku, Osaka-shi, Osaka No. Yanmar Agricultural Machinery Co., Ltd.

Claims (1)

[Claims] 1. A self-propelled root crop harvester that conveys the root vegetables after digging to the rear and sorts the leaves with a sorting conveyor after cutting the leaves, and provides a sorting work clutch lever for turning ON / OFF the driving of the sorting conveyor. , A deceleration allowance mechanism is arranged between a link mechanism that connects the main shift lever and the speed change arm of the transmission, and the deceleration allowance mechanism and the sorting work clutch lever are interlockingly connected to rotate the sorting work clutch lever to the OFF side. A sorting conveyor operating device for a self-propelled root crop harvester, characterized in that it is configured to decelerate when it does.