JPH11155338A - Mowing equipment for riding rice transplanters - Google Patents

Abstract

(57) [Problem] To provide a mowing device for a riding type rice transplanter, which can constitute a mowing machine capable of greatly reducing the labor required for mowing work on a slope connected to a paddy field or the like. SOLUTION: In a mowing device for a riding type rice transplanter, a seedling planting device 3 is detachably connected via a hitch B to a rear end of an elevating link mechanism 2 provided at a rear portion of a traveling machine body 1. A connection frame 23 having a detachable engagement portion C;
Elevating arm mechanism 24 extended from connecting frame 23
And the mowing mechanism 2 attached to the tip of the lifting arm mechanism 24
5, and a first working posture extending the elevating arm mechanism 24 from the connecting frame 23 toward the lateral outside and forward, and a second working posture extending from the connecting frame 23 toward the laterally outside. It is connected to the connecting frame 23 so as to be able to swing back and forth so that the posture can be changed to the retracted position located within the body width together with the mowing mechanism 25.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mowing device for a riding type rice transplanter, wherein a seedling planting device is detachably connected via a hitch to a rear end of an elevating link mechanism provided at a rear portion of a traveling body.

[0002]

2. Description of the Related Art In a riding rice transplanter as described above,
In order to increase the versatility of the rice transplanter, the rice transplanter can be used as an intermediate management device by removing the seedling planting device from the hitch and connecting an intermediate management device such as a chemical spraying device or a control device. By the way, conventionally, when cutting grass that grew on slopes such as ridges and farm roads connected to paddy fields,
A mowing machine constructed using a dedicated mowing machine or tractor is used to perform from the ridge or the farm road side, and it is considered that the riding type rice transplanter as described above is used as a mowing machine. Had not been.

[0003]

However, according to the above-mentioned prior art, when the road surface such as a ridge or an agricultural road is narrow and a mowing machine cannot be inserted, the mowing cannot be performed at all by the mowing machine, so that all mowing is performed manually. If there is an inconvenience that must be done in the work, and if the slope is long in the vertical direction, there will be uncut leaves on the slope on the paddy side when mowing with a mower. There were inconveniences that had to be done in the work.
In other words, there is room for improvement in reducing the labor required for mowing work on the slope connected to the paddy field.

An object of the present invention is to provide a mowing device for a riding type rice transplanter, which can constitute a mowing machine capable of greatly reducing the labor required for mowing work on a slope connected to a paddy field. It is in.

[0005]

In order to achieve the above object, according to the first aspect of the present invention, seedlings are planted via a hitch at a rear end of a lifting link mechanism provided at a rear portion of a traveling body. What is claimed is: 1. A mowing device for a riding type rice transplanter having devices detachably connected thereto, comprising: a connecting frame having an engaging portion detachable from the hitch; a lifting arm mechanism extending from the connecting frame; And a mowing mechanism attached to the tip of the mechanism, and the lifting arm mechanism,
A first working posture extending from the connection frame toward the outside in the lateral direction, a second working posture extending from the connection frame toward the outside in the horizontal direction, and a storage position positioned within the body width together with the mowing mechanism. It was connected to the connecting frame so as to be swingable back and forth so that the posture could be changed.

According to the first aspect of the present invention, a riding type mower utilizing a rice transplanter can be constructed by removing the seedling planting device from the hitch and connecting the mowing device. The rice transplanter that constitutes the mower is used for planting work in a paddy field from the beginning, and the mower is provided with a lifting arm mechanism extending from a connecting frame connected to the traveling body. Since the mowing mechanism is provided at the tip, the mowing machine is run on the ridges in the paddy field, so that the planted seedlings are not depressed by the wheels or the wheels are slipped without causing inconveniences such as the ridges connected to the paddy fields. Grass growing on slopes such as roads and farm roads can be cut from the paddy field.
Moreover, the mowing range can be widened by raising and lowering the mowing mechanism by the raising / lowering arm mechanism, so that mowing of grass growing on the flat ground such as a ridge connected to a paddy field or an agricultural road, and a ridge sandwiching an irrigation canal, etc. It is also possible to cut grass growing on the slopes of farm roads and flat ground from the paddy field side. Naturally, rice transplanters are also capable of traveling on the road than originally, so on ridges and agricultural roads with wide road surfaces where rice transplanters can enter, it is also possible to cut from ridges and agricultural roads. become.

In other words, since the mowing machine is constructed by effectively using the rice transplanter, which is a paddy field working machine, in the mowing work for slopes such as ridges and agricultural roads near paddy fields, the mowers such as ridges and agricultural roads are used. When the road surface is narrow and the mower cannot be entered, the mowing work can be performed over a wide area from the paddy field side.
If the road surface is wide enough but the slope is quite long in the vertical direction, the mowing work can be performed over a wide range from both the paddy field side and the ridge or farm road side. Can be eliminated or greatly reduced.

In addition, when the posture of the elevating arm mechanism is changed to the first working posture, the mowing mechanism comes to be positioned on the lateral outside of the operating section of the traveling body, so that the operator can immediately move the mowing mechanism. The work place can be easily visually observed, whereby the degree of mowing by the mowing mechanism can be accurately grasped, so that a suitable mowing state can be easily brought out. Further, when the posture of the lifting arm mechanism is changed to the second working posture, the separation distance of the reaping mechanism from the traveling body to the lateral outside can be maximized. Grass can be cut, and a wide range of cutting work can be performed. Further, when the posture of the lifting arm mechanism is changed to the retracted posture, it is easier to avoid contact with other objects of the lifting arm mechanism and the mowing mechanism during traveling on a road or the like.

In addition, since the mower is constructed by effectively using the rice transplanter, the equipment cost can be reduced as compared with the case where the mower is exclusively used.

[Effect] Therefore, the rice planting machine, which is a paddy field working machine, can effectively utilize its original function,
It is possible to greatly reduce the labor required for mowing work on the slope connected to the paddy field, and it is easy to show a suitable mowing state, and it is possible to perform a wide range of mowing work, For a riding type rice transplanter that can constitute a mowing machine that can reduce damage due to contact with other objects when traveling on the road, improve maneuverability, and also reduce equipment costs Can provide a mowing device.

In the invention according to claim 2 of the present invention,
2. The riding rice transplanter according to claim 1, wherein the operation of changing the attitude of the lifting arm mechanism and the operation of fixing the attitude in a desired attitude can be performed from a control section of the traveling body. Mowing equipment.

According to the second aspect of the present invention, when the posture of the elevating arm mechanism located behind the traveling body is changed, the labor for temporarily descending from the traveling body and moving to the vicinity of the elevating arm mechanism is reduced. The trouble can be eliminated. In particular, when mowing work from a paddy field where seedlings have been planted, it is not necessary to descend from the traveling aircraft to the paddy field when changing the position of the lifting arm mechanism. Effectively, it is possible to avoid inconveniences such as the operator stepping down on the planted seedling beforehand.

[Effect] Therefore, the labor required for the operation of changing the position of the lifting arm mechanism can be reduced, the operability of the operation for changing the position can be improved, and inconveniences such as adversely affecting the planted seedling can be avoided. Became.

According to the third aspect of the present invention,
In the invention described in claim 1 or 2, the operation of changing the attitude of the lifting arm mechanism is performed by operating an actuator.

According to the third aspect of the present invention, since it is not necessary to manually change the attitude of the lifting arm mechanism, the labor required for the attitude changing operation of the lifting arm mechanism can be reduced. Further, since the lifting arm mechanism can be fixed in the desired posture by stopping the operation of the actuator, it is not necessary to newly provide a fixing means for fixing the lifting arm mechanism in the desired posture.

[Effect] Therefore, the labor required for the operation of changing the attitude of the lifting arm mechanism can be effectively reduced, and the structure can be simplified and the manufacturing cost can be reduced.

According to the fourth aspect of the present invention,
In the invention according to any one of claims 1 to 3, a height detection sensor that detects a height position of the mowing mechanism, and a height position of the mowing mechanism detected by the height detecting sensor is A control means for automatically stopping the drive of the cutting mechanism when the height exceeds a predetermined height position.

According to the fourth aspect of the present invention, when the mowing mechanism is raised to a non-working height position exceeding a predetermined height position by operating the lifting arm mechanism, the driving of the mowing mechanism is automatically stopped. Will be done. In other words, when the drive stop of the mowing mechanism is configured to be performed only by manual operation, the drive stop operation of the mowing mechanism is forgotten when the mowing mechanism is raised to the non-working height position by the operation of the lifting / lowering arm mechanism. This causes a disadvantage that the mowing mechanism is driven in a state in which the mowing mechanism is largely floated from the ground. In the invention according to the fourth aspect, the disadvantage can be reliably prevented.

[Effect] Therefore, it is possible to reliably prevent the disadvantage that the mowing mechanism is driven in a state that the mowing mechanism is largely levitated from the ground.

In the invention according to claim 5 of the present invention,
The invention according to any one of claims 1 to 4, wherein the reaping mechanism includes a first reaping unit mounted on a distal end of the elevating arm mechanism, and an up-and-down swing of one side end of the first reaping unit. And a second reaping unit movably connected.

According to the fifth aspect of the present invention, in both the first and second cutting sections, only the grass that grows on the flat ground such as ridges and agricultural roads or on the slope is cut off. In addition to the one-sided mowing work, the first mowing part cuts the grass that grew on flat ground such as ridges and agricultural roads, and the second mowing part removed the grass that grew on slopes such as ridges and agricultural roads. The mowing is performed, or the first mowing section is used to mow grass that has grown on slopes such as ridges and agricultural roads, and the second mowing section is used to mow grass that has grown on flat ground such as ridges and agricultural roads. And so on.

[Effects] Accordingly, the state can be switched between the single-sided cutting operation state and the double-sided cutting operation state according to the work situation, so that workability and work efficiency can be improved.

In the invention according to claim 6 of the present invention,
In the invention according to claim 5, a fixing means for fixing the second reaping part at a predetermined vertical angle with respect to the first reaping part is provided, and the fixing means can be operated from the operation part. did.

According to the sixth aspect of the present invention, for example, when performing a one-sided cutting operation, the vertical angle of the second cutting unit with respect to the first cutting unit is 0 degree (the first cutting unit). And the second reaping unit are fixed to be flush with each other), so that the reaping surface after the reaping by the first reaping unit and the second reaping unit can be flushed. When the mowing operation is performed, the first mowing portion and the second mowing portion are fixed by fixing the vertical angle of the second mowing portion with respect to the first mowing portion at an angle corresponding to the angle difference between the two surfaces to be worked. The mowing surface after mowing by the two mowing portions can be trimmed at an angle according to the angle difference between the two mowing surfaces. In addition, since the operation of changing the vertical angle of the second reaping unit with respect to the first reaping unit can be performed from the control unit, the labor and trouble of temporarily descending from the traveling machine and moving to the vicinity of the reaping mechanism during the operation can be reduced. It can be unnecessary.

[Effect] Therefore, it is possible to cut the aesthetically pleasing cut, reduce the labor required to change the vertical angle of the second cut section relative to the first cut section, and improve the operability. Was.

According to the seventh aspect of the present invention,
In the invention according to any one of claims 1 to 6, the lifting arm mechanism and the mowing mechanism are configured to be hydraulically driven, and a hydraulic oil tank is provided on a side opposite to a direction in which the lifting arm mechanism extends. And it was arranged so that it might be located in the lower part side within the fuselage width.

According to the seventh aspect of the present invention, the weights of the lifting arm mechanism and the mowing mechanism extending laterally outward from the connection frame are balanced by the weight of the hydraulic oil tank and the hydraulic oil in the tank. As well as
The position of the center of gravity of the mowing device and the position of the center of gravity of the mowing machine can be lowered. Further, it is possible to prevent the hydraulic oil tank from coming into contact with other objects during traveling.

[Effect] Accordingly, the workability and the stability of the mowing device when the mowing device is attached and detached, and the stability and maneuverability of the machine body with the mowing device connected, can be improved, and the operation during traveling can be improved. Damage due to contact with other oil tanks can be suppressed.

According to the eighth aspect of the present invention,
In the invention according to any one of the first to seventh aspects, the operation units of the lifting arm mechanism and the mowing mechanism are configured to be interchangeable between the traveling machine body side and the connection frame side.

According to the eighth aspect of the present invention, when the mowing device is connected to the rice transplanter, the operating section can be replaced from the connecting frame side to the traveling body side. Even if you do not extend the support frame from the connection frame that is far away toward the control unit,
The operation unit can be located at the control unit of the traveling aircraft. When the mowing device is detached from the rice transplanter, the mowing device can be made compact by changing the operation unit from the traveling machine side to the connecting frame side. In addition, when performing maintenance on the lifting arm mechanism and the mowing mechanism, the operating section is replaced with the connecting frame side, so that the operation of the lifting arm mechanism and the mowing mechanism can be performed from the mowing device side without moving to the control section. The maintenance work can be easily performed.

[Effect] Therefore, it is possible to improve the operability of the raising / lowering arm mechanism and the mowing mechanism during mowing work connected to the rice transplanter, and to achieve compactness when removing the rice transplanter from the rice transplanter and storing it in a barn. Workability during maintenance work can be improved.

[0032]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an overall side view of a riding type rice transplanter to which a mowing device A according to the present invention is detachably connected. The rice transplanting machine includes a riding type traveling machine 1 and a traveling machine 1.
And a lifting / lowering link mechanism 2 provided at the rear of the apparatus, and a seedling planting device 3 for eight-row planting detachably connected to the rear end of the lifting / lowering link mechanism 2. The traveling body 1 includes an engine 4 mounted on a front part thereof, a hydrostatic continuously variable transmission 5 and a gear type transmission 6 provided on a rear part, a pair of left and right front wheels 7 mounted on a lower front part, and a lower rear part. The vehicle includes a pair of left and right rear wheels 8, a steering handle 9 disposed above the front part, and a driver seat 10 disposed above the rear part, and the like. The transmission is transmitted to the front wheel 7, the rear wheel 8, and the seedling planting device 3 via the step transmission 5 and the gear type transmission 6. The lifting link mechanism 2 includes a pair of left and right top links 2A and a lower link 2B which are connected to the rear part of the traveling body 1 so as to be able to swing up and down around respective upper and lower fulcrums P1, and a lower rear part of the traveling body 1 and the top link 2A. It is composed of a hydraulic lift cylinder 2C that is bridged over it, a vertical link 2D that is pivotally connected to the rear end of the top link 2A and the rear end of the lower link 2B, and the like. The vertical link 2D is provided with a hook-shaped support fitting 11 at the center of the upper part thereof, and is provided with swingable hook fittings 12 on the left and right sides at the lower portion thereof. The vertical link 2D, the support fitting 11, The hook fitting 12 constitutes a hitch B for connecting the working device.

[0034] As shown in Figs.
A fixed frame 13 connected to a rear end of the lifting link mechanism 2 via a hitch B, and a swing frame 1 connected to both left and right ends of the fixed frame 13 so as to be swingable about a vertical axis P2.
4. a feed case 15 connected to the free end of each swing frame 14 so as to be swingable about a longitudinal axis P3; a square pipe-shaped support frame 16 extending from each feed case 15 to the left and right; A planting transmission case 17 extending rearward from both left and right ends of the support frame 16, a rotary planting mechanism 18 pivotally supported on the rear left and right sides of each planting transmission case 17, and each planting mechanism 18. On the other hand, four seedlings left and right are connected so that they can be reciprocated and moved horizontally with a constant stroke.
9, and three separate leveling floats 20 that preliminarily perform a leveling operation on a planting location by each planting mechanism 18 and the like, and are separated into a four-row left seedling planting unit 3A and a right seedling planting unit 3B. The left seedling planting device unit 3A and the right seedling planting device unit 3B are capable of swinging the right and left seedling planting device units 3A and 3B around the respective vertical axes P2 and P3. The working posture (see FIG. 2) in which the left seedling planting device unit 3A and the right seedling planting device unit 3B are connected to each other in a laterally facing state (see FIG. 2). 3) can be switched. That is, by switching the posture of the seedling planting device 3 from the working posture to the storage posture, the amount of the seedling planting device 3 projecting in the lateral direction with respect to the traveling machine body 1 can be reduced. In addition, the danger of the seedling planting device 3 coming into contact with other objects when traveling on a road or transporting by truck or the like can be reduced.

As shown in FIG. 1, the fixed frame 13 is provided at its upper center with first left and right first connecting pins 21 which are received and supported by the support fittings 11 of the hitch B, and at the lower left and right sides thereof. A pair of left and right second connecting pins 22 engageable with the hook fitting 12 of the hitch B
Are protruded toward the left and right outer sides, and the first connecting pin 21 and the second connecting pin 22 constitute an engaging portion C that can be engaged with and disengaged from the hitch B. That is, the support fitting 11 of the hitch B receives and supports the first connection pin 21 of the fixed frame 13, and
Each of the hook fittings 1 of the hitch B to the left and right second connecting pins 22
2, the seedling planting device 3 can be fixed while being connected to the rear end of the elevating link mechanism 2.

Although not shown in the drawings, this rice transplanter has a configuration in which an intermediate management device such as a chemical spraying device is connected to the rear end of the lifting link mechanism 2 via a hitch B instead of the seedling planting device 3. Can be used as an intermediate management machine.
As a matter of course, an intermediate management device such as a medicine spraying device is provided with an engaging portion C having the same configuration as that of the seedling planting device 3.

As shown in FIGS. 4 to 7, this rice transplanter uses a hitch B at the rear end of the elevating link mechanism 2 with a mowing device A in place of an intermediate management device such as a seedling planting device 3 and a chemical spraying device. When they are connected together, they can be used as mowers. The mowing device A includes a connecting frame 23 having an engaging portion C having the same configuration as that of the seedling planting device 3 including the first connecting pin 21 and the second connecting pin 22 that can be disengaged from the hitch B, A hydraulically driven lifting / lowering arm mechanism 24 extending from the right side of the connection frame 23, a hydraulically driven cutting mechanism 25 attached to the tip of the lifting / lowering arm mechanism 24, and hydraulic oil for the lifting / lowering arm mechanism 24 and the cutting mechanism 25 are supplied. A hydraulic oil tank 26 to be stored and a shaft-type transmission mechanism 2 attached to a constant-speed output shaft (not shown) of a traveling transmission system extending from a rear portion of the gear-type transmission 6.
7, an operation unit 29 for operating the hydraulic pump 28, the lifting arm mechanism 24, and the reaping mechanism 25, which are connected by transmission via the
And a pair of left and right stands 30 mounted on the connecting frame 23 so as to be vertically slidable and fixed at an operation position and a non-operation position.

That is, since the mowing machine A having the above configuration is connected to the rice transplanting machine for planting work in the paddy field, the mowing machine is run on the paddy field. It is possible to cut down grasses that have grown on slopes such as ridges and farm roads that are connected to paddy fields, without inconvenience such as stepping down the planted seedlings with the wheels 7 and 8 or slipping the wheels 7 and 8 from the paddy side. You can do it. Moreover, the cutting range can be widened by raising and lowering the cutting mechanism 25 by the raising and lowering arm mechanism 24, so that the grass growing on the flat ground such as ridges and agricultural roads connected to the paddy field, and further, the irrigation canal and the like are sandwiched. It is also possible to cut grass growing on slopes such as ridges and farm roads and on flat ground from the paddy field side. or,
Naturally, rice transplanters are also capable of traveling on the road from the beginning, so on ridges and agricultural roads with wide road surfaces where rice transplanters can enter, it is also possible to cut from the ridges and farm roads. ing.

As shown in FIGS.
Is arranged on the lower side of the left side of the connecting frame 23 opposite to the direction in which the elevating arm mechanism 24 extends, and when connected to the rice transplanter, fits within the width of the rear fender 31 of the traveling body 1 and , So as not to protrude from the upper surface of the rear fender 31. That is,
The weight of the lifting arm mechanism 24 and the mowing mechanism 25 extending rightward and outward from the connection frame 23 is reduced by the hydraulic oil tank 2.
6 and the weight of the hydraulic oil in the tank, the center of gravity of the mowing device A and the center of gravity of the mowing machine after connection to the rice transplanter can be lowered.
Thus, the workability and the stability of the mowing device A during the mowing device attaching / detaching operation, and the stability and maneuverability of the machine body with the mowing device A connected can be improved. Damage due to contact with other objects can be suppressed. Also, the hydraulic oil tank 26
Is provided with a support portion 26A to which a balance weight 32 is detachably attached.
By adjusting the number of balance weights 32 attached to 6A, a more suitable balance state can be realized.

As shown in FIGS. 5 and 7, when the mowing device A is attached to the rice transplanter, a pair of left and right support members extends from the auxiliary frame 33 of the traveling machine body 1 to the connecting frame 23 of the mowing device A. If the hydraulic oil leaks from the lift cylinder 2C or the like of the lifting link mechanism 2 during mowing, the pair of right and left support members 34 is provided regardless of the leak. The mowing device A can be stably positioned at a predetermined working height position.

As shown in FIGS. 4 to 7, the lifting arm mechanism 2
Reference numeral 4 denotes a support bracket 35 connected to the right side of the connection frame 23 so as to be swingable about a vertical axis P4, a boom 36 connected to a free end of the support bracket 35 so as to be swingable about a horizontal axis P5, At the free end of the boom 36, a pair of lateral fulcrums P6
It is composed of a parallel quadruple link type arm 37 swingably connected to the circumference, a hydraulic boom cylinder 38 for swinging the boom 36, and a hydraulic arm cylinder 39 for swinging the arm 37. It is swingable back and forth around the longitudinal axis P4 with respect to the connecting frame 23, and the height position of the mowing mechanism 25 and the distance from the traveling machine 1 are adjusted by the operation of the boom cylinder 38 and the arm cylinder 39. I can do it. As shown in FIG. 6 and FIG.
3 is engaged by the connecting pin 40,
The lifting arm mechanism 24 extends from the right side of the connecting frame 23 to the front right outside so that the reaping mechanism 25 is positioned substantially to the right outside of the driver's seat 10 disposed on the control section 1A of the traveling body 1. The first engaging hole 35a fixed in the first working posture and the mowing mechanism 25 are positioned right outside the connecting frame 23 on the right side.
4 is a second engaging hole 35 that is fixed in a second working posture extending rightward and outward from the right side of the connection frame 23.
b, and the lifting arm mechanism 24 at the rear of the traveling body 1
The third engagement for fixing the lifting arm mechanism 24 in a retracted posture extending leftward and rearward from the right side of the connecting frame 23 so that the cutting mechanism 25 and the mowing mechanism 25 are positioned within the width of the traveling body 1. A hole 35c is formed. That is, the elevating arm mechanism 24 is operated by the operator to swing back and forth and
By inserting and removing the connecting pin 40 with respect to 5a to 35c,
It is configured such that the posture can be changed and fixed to the first working posture, the second working posture, and the storage posture.

With this configuration, when the posture of the elevating arm mechanism 24 is changed to the first working posture and fixed, the mowing mechanism 25 is positioned substantially to the right outside the driver's seat 10, whereby the operator can Since the work place immediately after the reaping mechanism 25 has passed can be easily visually observed, and the degree of reaping by the reaping mechanism 25 can be accurately grasped, a suitable mowing state can be easily brought out. It has become. Further, when the posture of the lifting arm mechanism 24 is changed to the second working posture and fixed, the connecting frame 23, the lifting arm mechanism 24, and the reaping mechanism 25 are positioned in a horizontal straight line. Since the separation distance on the right outer side of the cutting mechanism 25 can be maximized, it is possible to cut grass that has grown far away from the traveling road surface, and thus a wider range of cutting can be achieved. Work can be done. Further, if the posture of the lifting arm mechanism 24 is changed to the retracted posture and fixed, the lifting arm mechanism 24 and the reaping mechanism 25 can be positioned within the width of the traveling machine body 1. 24 and reaping mechanism 25
The contact with other objects can be easily avoided.

As shown in FIGS. 4 to 7 and FIGS. 9 to 11,
The reaping mechanism 25 includes a parallel quadruple link type auxiliary arm 41 and an auxiliary arm 41 which are connected to the free end of the arm 37 so as to be swingable about the horizontal axis P7 and changeable in attitude around the vertical axis P8. A blade-type first cutting portion 42 connected to the free end so as to be able to swing around a horizontal axis P9, and a blade connected to one end of the first cutting portion 42 so as to be able to swing up and down around the horizontal axis P10. A second cutting unit 43 of a type, a hydraulic motor 44 mounted on the second cutting unit 43, and a transmission mechanism 45 for transmitting power from the hydraulic motor 44 to the first cutting unit 42 and the second cutting unit 43,
It is constituted by such as. Blades 46 are vertically arranged on the first and second reaping units 42 and 43 so as to facilitate cutting of the cut grass. The transmission mechanism 45
A first bevel gear-type transmission part 45a communicatively connected to the first reaping part 42, a second bevel gear-type transmission part 45b communicatively connected to the second reaping part 43, and an axial transmission part configured to be extendable and contractible. 45c and the first bevel gear type transmission 45
a and the second bevel gear type transmission portion 45b
The coupling is constituted by a universal joint 45d for connecting the second cutting part c and the like, and allows the second cutting part 43 to transmit to the first cutting part 42 while allowing up and down swing around the horizontal axis P10.

With the above configuration, the cutting mechanism 25 cuts only the grass that has grown on either the flat ground such as a ridge or an agricultural road or the slope in both the first cutting section 42 and the second cutting section 43. In addition to the one-side mowing operation, the first mowing part 42 cuts the grass growing on the flat ground such as the ridge or the farm road, and the second mowing part 43 cuts the grass growing on the slope such as the ridge or the farm road. Of the grass that grew on the slopes such as ridges and agricultural roads by the first reaping unit 42, and the grass that grew on the flat ground such as ridges and agricultural roads by the second reaping unit 43. Two-sided mowing work such as mowing can also be performed.

Incidentally, the auxiliary arm 41 is for allowing the cutting mechanism 44 to move up and down in accordance with a change in the undulation of the work place. The operation of changing the attitude of the auxiliary arm 41 around the vertical axis P8 is performed according to the extending direction of the lifting arm mechanism 24 (the position of the cutting mechanism 25). By changing the posture around P8, the mowing mechanism 25 can be set to a posture along the front-rear direction of the traveling machine 1 regardless of the extending direction of the lifting arm mechanism 24 (the position of the mowing mechanism 25). Reference numeral 60 in FIGS. 4, 5, 9 and 10 denotes a connecting bracket 37 mounted on 37 on the side of the lifting arm mechanism 24.
By inserting the reaping mechanism 25 with respect to the elevating arm mechanism 24 in a posture corresponding to the extending direction of the elevating arm mechanism 24 by inserting the first to third fixing holes 37a to 37c formed in A, This is a fixing pin provided on the auxiliary arm 41 on the side of the mowing mechanism 25. 4 to 8, reference numeral 47 denotes a first gauge wheel provided in front of the first reaping unit 42 and the second reaping unit 43, and reference numeral 48 denotes a first reaping unit 42 and a second reaping unit. 43 is a second gauge wheel mounted on the rear of 43.

As shown in FIGS. 4 to 7 and FIGS. 11 and 12, the cutting mechanism 25 includes the second cutting section 43 in a state where the vertical angle with respect to the first cutting section 42 is 0 degree (first cutting section 42). Part 4
2 and the second cutting unit 43 are flush with each other), and the vertical angle with respect to the first cutting unit 42 is +45 degrees (an example of a predetermined vertical angle).
Or the vertical angle with respect to the first reaping unit 42 is -45 degrees (an example of a predetermined vertical angle). A fixing means 49 is provided for fixing in a state (a state in which the first cutting unit 42 and the second cutting unit 43 are broken). The fixing means 49 includes a connecting pin 49A supported slidably back and forth by the second mowing portion 43, and a connecting arm 49 extending from the first mowing portion 42 so as to face the connecting pin 49A.
B, an urging spring 49C for urging the connecting pin 49A toward the connecting arm 49B, and an operating lever 49 provided on the control unit 1A of the traveling machine body 1 when the mowing device A is connected to the rice transplanter.
D, an operation wire 49E for connecting the connecting pin 49A and the operation lever 49D, and the like. The connecting arm 49 </ b> B has a second mowing part 4 with respect to the first mowing part 42.
In the state where the vertical angle of 3 is 0 degree, the connecting pin 49A is engaged with the flush fixing hole 49a, and the vertical direction of the second reaping part 43 with respect to the first reaping part 42 is +45 degree. A valley fold fixing hole 49b into which the pin 49A is engaged, and a mountain fold fixing in which the connecting pin 49A is engaged in a state where the vertical angle of the second reaping part 43 with respect to the first reaping part 42 is -45 degrees. A hole 49c is provided.

With the above arrangement, when performing the one-sided cutting operation, when the vertical angle of the second cutting unit 43 with respect to the first cutting unit 42 is set to 0 °, the connecting pin 49A is connected to the connecting arm 49 by the action of the biasing spring 49C. 49B flush hole 49a
Automatically inserted into the first reaping unit 42 and the second reaping unit 43
Are fixed in a flush state, so that the cutting surface after being cut by the first cutting unit 42 and the second cutting unit 43 can be evenly trimmed. On the other hand, when performing double-sided mowing work, when the vertical angle of the second mowing portion 43 with respect to the first mowing portion 42 is set to +45 degrees, the connecting pin 49A fixes the valley of the connecting arm 49B by the action of the biasing spring 49C. The first mowing part 42 and the second mowing part 43 are automatically inserted into the hole 49b to fix the first mowing part 42 and the second mowing part 43 in a valley bent state. When the vertical angle is set to −45 degrees, the connecting pin 49A is connected to the connecting arm 4 by the action of the biasing spring 49C.
9B, the first and second reaping portions 42 and 43 are automatically inserted into the ridge breaking fixing holes 49c so that the first and second reaping portions 42 and 43 are fixed in a buckling state. Part 43
Thus, the mowing surface after mowing can be trimmed to a state having an angle of 45 degrees.

As shown in FIGS. 4 to 6, 12 and 13, the operating section 29 for operating the lifting arm mechanism 24 and the mowing mechanism 25 is provided with a hydraulic pump 2 for the hydraulic motor 44.
A first operation mechanism 29A comprising a two-position switching type first switching valve 29a for switching the flow state of the operating oil from No. 8 and a front-rear swing type first operation lever 29b for operating the first switching valve 29a; A three-position switching type second switching valve 29c for switching the flow state of hydraulic oil from the hydraulic pump 28 to the boom cylinder 38, and a three-position switching type for switching the flow state of hydraulic oil from the hydraulic pump 28 to the arm cylinder 39. A second operating mechanism 29B including a third switching valve 29d, a cross swing type second operating lever 29e for operating the second switching valve 29c and the third switching valve 29d, and the first operating mechanism 29A and the second operating mechanism 29B. It is constituted by an operation frame 29C supporting the operation mechanism 29B, and the mowing mechanism 25 is driven and stopped by the front and rear swing operation of the first operation lever 29b. It is adapted to be switched on. The right and left swinging operation of the second operating lever 29e allows the raising and lowering operation of the mowing mechanism 25 by the operation of the boom cylinder 38, and the up and down swinging operation of the second operating lever 29e allows the mowing mechanism 25 to be operated by the operation of the arm cylinder 39. Lifting operation can be performed.

As shown in FIGS. 4 to 7 and FIG. 12, on the operation frame 29C of the operation section 29, a connection plate 29f which is externally supported by a holder 50 provided on the right side of the connection frame 23 is directed downward. It has been extended. On the other hand, the connecting plate 29 is also provided on the right rear portion of the driving seat 10 in the traveling body 1.
A holder 50 for externally supporting f is provided. That is, when the mowing device A is connected to the rice transplanter, the operating unit 2 can be extended without extending the supporting frame for supporting the operating unit from the connecting frame 23 that is far away from the control unit 1A.
9 is changed from the connecting frame 23 side to the traveling body 1 side, so that the first operating lever 29b and the second operating lever 2
9e can be positioned on the right side of the driver's seat 10, and when the mowing device A is to be removed from the rice transplanter, the operating unit 29 is replaced from the traveling body 1 side to the connecting frame 23 side. A can be compacted into a compact state, so that the operability of the lifting arm mechanism 24 and the mowing mechanism 25 during mowing work is improved, and the mowing device A is removed from the rice transplanter and stored in a barn or the like. It is designed to be compatible with compactness. Moreover, when the maintenance of the lifting arm mechanism 24 and the mowing mechanism 25 is performed, the operation unit 29 is replaced with the connecting frame 23 side, so that the lifting arm can be moved from the mowing device A side without moving to the control unit 1A. Mechanism 24
And the mowing mechanism 25 can be operated,
The workability of such maintenance work can be improved. Note that reference numeral 50a in FIGS.
Is a wing bolt for holding and fixing the operation portion 29 by screwing into a screw hole 50b formed in the holder 50.

As shown in FIGS. 4 to 6, 12 and 13, the operating portion 29 has an operating lever 49 D of the fixing means 49.
When the operation unit 29 is replaced from the connecting frame 23 side to the traveling body 1 side, the operation lever 49D can be operated from the operation unit 1A of the traveling body 1. As a result, by operating the operation lever 49D in the control section 1A, the connecting pin 49A is connected to each of the fixing holes 49D.
a to 49c, which can be extracted from any one of the
Can be released at a predetermined vertical angle, and the grounding state of the mowing mechanism 25 is changed by the operation of the second operating lever 29e in the control section 1A, so that the second mowing section 43 with respect to the first mowing section 42. The connecting pin 49A can be inserted into any of the fixing holes 49a to 49c by adjusting the vertical angle of the second mowing portion 43 with respect to the first mowing portion 42 by the fixing means 49 at a predetermined vertical angle. The fixed state can be displayed.
That is, the operation for changing the vertical angle of the second reaping unit 43 with respect to the first reaping unit 42 can be performed from the control unit 1A. In this operation, the vehicle temporarily descends from the traveling body 1 and moves to the vicinity of the reaping mechanism 25. This eliminates the need for labor and hassle.

As shown in FIGS. 6, 7 and 13, the swing fulcrum of the boom 36 in the elevating arm mechanism 24 is
As an example of the height detection sensor S that detects the height position of the mowing mechanism, an angle sensor 51 including a potentiometer that detects the vertical swing angle of the boom 36 is provided. The angle sensor 51 is configured to output the detected value to a control device 52 provided in the mowing device A. The control device 52 grasps the height position of the reaping mechanism 25 based on the detection value from the angle sensor 51, and when the height position exceeds a preset height position, the operation unit 29 The cutting operation of the mowing mechanism 25 is automatically stopped by operating the first operating lever 29b to the "off" position by operating the electromagnetic solenoid 53 provided in the first control unit. That is, the control device 52 includes the reaping mechanism 25.
The control means 52A for automatically stopping the driving of the mowing mechanism 25 as the height position of the mowing mechanism exceeds the predetermined height position is provided as a control program, and the mowing mechanism 25 is controlled by the control operation of the control means 25A. Lifting arm mechanism 24
By the operation described above, when the vehicle is raised to a non-working height position beyond the predetermined height position so as to float greatly above the ground, the driving can be reliably stopped.

As shown in FIGS. 4 to 6, 12 and 13, the operation unit 29 is provided with a dial type changeover switch 54 which can be operated to switch between an "ON" position and an "OFF" position. By operating the changeover switch 54 to the "ON" position, the control operation of the control means 52A can be executed, and by operating the changeover switch 54 to the "OFF" position, the control means 52A can be operated. Control operation can be stopped. That is, the mowing mechanism 25 is operated by the operation of the lifting arm mechanism 24.
During a continuous operation, such as once raising to a non-working height position exceeding the predetermined height position, and then immediately lowering to the working height position to restart mowing work, or a height position exceeding the predetermined height position At the time of working at a high place where the mowing work is performed, or at the time of a maintenance work that needs to drive the mowing mechanism 25 at the non-working height position, the changeover switch 54 is operated to the “off” position to thereby obtain the predetermined height. The mowing mechanism 25 can be driven even at a height position exceeding the position.

[Other Embodiment] The riding type rice transplanter used for the mowing machine is not limited by the number of planting strips as long as the seedling planting device 3 is removably connected thereto. Seedling plant 3
May be configured such that the posture cannot be switched to the storage posture. The mowing device A may be one in which an elevating arm mechanism 24 is extended from the left side of the connecting frame 23 and a hydraulic oil tank 26 is arranged on the right side of the connecting frame 23. Arm mechanism 24
And the mounting position of the hydraulic oil tank 26 may be configured to be changeable. As shown by a dashed line in FIG. 6, the lifting arm mechanism 24 is configured so as to be fixed in a posture extending rearward from the connecting frame 23 along the front-rear direction of the traveling body 1, and the mowing mechanism 25 is configured as follows. The mowing work may be performed in a state where the mowing operation is performed behind the rear wheel 8 of the traveling body 1. As shown in FIG. 14 and FIG.
The posture changing operation 4 and the fixing operation in the desired posture are connected to the elevating arm mechanism 24 so as to be able to swing integrally around the vertical axis P4 and to be able to swing up and down relatively around the horizontal axis P11. At the same time, the traveling body 1 is operated by operating the operation lever 55 extended toward the control section 1A of the traveling body 1.
May be configured to be easily performed from the control unit 1A.
Incidentally, in FIG. 14 and FIG.
5 is provided with a connecting pin 40 swingably around the horizontal axis P12, and the first engaging hole 35a, the second engaging hole 35b, and the third engaging hole 35 through which the connecting pin 40 is inserted into the connecting frame 23. A support bracket 35 having a hole 35c is provided. Further, the operation lever 55 is constituted by a waist-folding type link mechanism so that the operation of the raising / lowering arm mechanism 24 to the retracted posture can be easily performed from the control section 1A.
Note that, in this configuration, it is desirable that the control section 1A be configured to be able to perform a posture changing operation of the reaping mechanism 25 with respect to the lifting arm mechanism 24 and a fixing operation in a desired posture. As shown in FIG. 16, the operation of changing the attitude of the elevating arm mechanism 24 is performed by operating the actuator D operated by the operating tool E provided in the operation unit 29. The fixing operation in the desired posture may be performed from the control unit 1A of the traveling body 1. Incidentally, in FIG. 16, a hydraulic cylinder 56 spanned between the connection frame 23 and the lifting arm mechanism 24 is employed as the actuator D, and the operating tool E is connected to an operating lever 57 for operating the hydraulic cylinder and a switching valve. (Not shown). Further, as the actuator D, a hydraulic or electric motor or the like may be adopted. It should be noted that also in this configuration, the control unit 1
From A, it is desirable to be configured so that the posture changing operation of the mowing mechanism 25 with respect to the lifting arm mechanism 24 and the fixing operation in a desired posture can be performed. The mowing mechanism 25 may be a reel type or a clipper type. As the fixing means 49, the second reaping unit 43 is set at an angle other than 0 degree and
(Degree), and may be configured to be fixed at a vertical angle of (degree).
May be fixed at a constant angular interval (for example, an interval of 15 degrees). The control means 52A may be configured to automatically drive the reaping mechanism 25 as the height position of the reaping mechanism 25 detected by the height detection sensor S falls below the predetermined height position. The height detecting sensor S is composed of an angle sensor 51 for detecting the vertical swing angle of the boom 36 and an angle sensor for detecting the vertical swing angle of the arm 39.
2A may be configured such that the height position of the mowing mechanism 25 is grasped from the detection value from the boom angle sensor 51 and the detection value from the arm angle sensor. Further, as the height detection sensor S, an ultrasonic sensor or the like may be used to detect the height of the reaping mechanism 25 with respect to the ground (a distance from the work surface).

[Brief description of the drawings]

FIG. 1 is an overall left side view of a riding type rice transplanter.

FIG. 2 is a plan view of the seedling planting apparatus in a state where it is switched to a working posture.

FIG. 3 is a plan view of the seedling planting apparatus in a state where the seedling is switched to a storage position;

FIG. 4 is a right side view of the rear part of the aircraft showing a state where the mowing device is removed.

FIG. 5 is a right side view of the rear part of the body showing a state in which the mowing device is connected to the mowing machine.

FIG. 6 is a schematic plan view of the rear part of the body showing a state in which the mower is connected to the mower.

FIG. 7 is a rear view of the airframe showing a state in which the mower is connected to the mower.

FIG. 8 is a cross-sectional plan view of a main part showing a fixing structure for fixing the lifting arm mechanism in a desired posture.

FIG. 9 is a cross-sectional plan view of a main part showing a fixing structure for fixing the mowing mechanism in a posture corresponding to the extending direction of the lifting arm mechanism.

10A is a rear view showing a configuration of a connecting portion between the lifting arm mechanism and the reaping mechanism. FIG. 10B is a right side view showing a configuration of a connecting portion between the lifting arm mechanism and the reaping mechanism.

FIG. 11A is a rear view of a cutting mechanism showing a single-side mowing work posture in which a first mowing portion and a second mowing portion are flush with each other. (B) A first mowing portion and a second mowing portion are valley-folded. Rear view of the reaping mechanism showing a double-sided mowing work posture (c) Rear view of a reaping mechanism showing a double-sided mowing work posture in which the first reaping unit and the second reaping unit are folded in a mountain.

FIG. 12 is a partially broken plan view of a main part showing a configuration of a fixing means.

FIG. 13 is a control block diagram showing a configuration of a mowing mechanism automatic stop structure.

FIG. 14 is a plan view of a main part showing another embodiment in which a posture changing operation of a lifting arm mechanism from a control unit is enabled.

FIG. 15 is a longitudinal sectional side view of a main part showing another embodiment in which a posture changing operation of a lifting arm mechanism from a control unit is enabled.

FIG. 16 is a plan view of a main part showing another embodiment in which the posture changing operation of the lifting arm mechanism is performed by operating the actuator.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Traveling body 1A Operation part 2 Elevating link mechanism 3 Seedling planting device 23 Connecting frame 24 Elevating arm mechanism 25 Cutting mechanism 26 Hydraulic oil tank 29 Operating part 42 First cutting part 43 Second cutting part 49 Fixing means 52A Control means B hitch C Engagement part D Actuator S Height detection sensor

Claims (8)

[Claims] 1. A mowing device for a riding type rice transplanter, wherein a seedling planting device is detachably connected via a hitch to a rear end of an elevating link mechanism provided at a rear portion of a traveling machine body. A connection frame having a possible engagement portion, a lifting arm mechanism extending from the connection frame,
And a mowing mechanism attached to the tip of the lifting arm mechanism, the lifting arm mechanism, the first working posture extending from the connection frame toward the lateral outer front,
Connected to the connection frame so as to be able to swing back and forth so that the posture can be changed to a second working position extending from the connection frame toward the side of the side and a storage position positioned within the body width together with the mowing mechanism. Mowing equipment for riding rice transplanters. 2. The mowing device for a riding type rice transplanter according to claim 1, wherein the operation of changing the attitude of the lifting arm mechanism and the fixing operation in a desired attitude can be performed from a control section of the traveling body. 3. The apparatus according to claim 1, wherein the operation of changing the attitude of the lifting arm mechanism is performed by operating an actuator.
Or a mowing device for a riding rice transplanter according to 2. 4. A height detecting sensor for detecting a height position of the reaping mechanism, and the reaping is performed when the height position of the reaping mechanism detected by the height detecting sensor exceeds a predetermined height position. The mowing device for a riding type rice transplanter according to any one of claims 1 to 3, further comprising control means for automatically stopping driving of the mechanism. 5. A mowing mechanism comprising: a first mowing portion attached to a tip of the lifting arm mechanism; and a second mowing portion connected to one end of the first mowing portion so as to be vertically swingable. The mowing device for a riding type rice transplanter according to any one of claims 1 to 4, which is configured. 6. A fixing device for fixing the second cutting unit at a predetermined vertical angle with respect to the first cutting unit,
The mowing device for a riding type rice transplanter according to claim 5, wherein the operation of the fixing means can be performed from the control unit. 7. The lifting arm mechanism and the mowing mechanism are configured to be hydraulically driven, and a hydraulic oil tank is located on a side opposite to a direction in which the lifting arm mechanism extends and at a lower side within a machine body width. The mowing device for a riding type rice transplanter according to any one of claims 1 to 6, wherein the mowing device is arranged as follows. 8. The riding type according to claim 1, wherein the operation units of the lifting arm mechanism and the reaping mechanism are configured to be replaceable between the traveling body side and the connection frame side. Mowing equipment for rice transplanters.