WO2017104504A1 - Work vehicle - Google Patents
Work vehicle Download PDFInfo
- Publication number
- WO2017104504A1 WO2017104504A1 PCT/JP2016/086354 JP2016086354W WO2017104504A1 WO 2017104504 A1 WO2017104504 A1 WO 2017104504A1 JP 2016086354 W JP2016086354 W JP 2016086354W WO 2017104504 A1 WO2017104504 A1 WO 2017104504A1
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- WIPO (PCT)
- Prior art keywords
- hitch
- change
- rear hitch
- front hitch
- machine body
- Prior art date
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Classifications
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- 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
- A01B63/00—Lifting or adjusting devices or arrangements for agricultural machines or implements
- A01B63/02—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors
- A01B63/10—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means
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- 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
- A01B63/00—Lifting or adjusting devices or arrangements for agricultural machines or implements
- A01B63/02—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors
- A01B63/10—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means
- A01B63/111—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means regulating working depth of implements
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- 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
- A01B63/00—Lifting or adjusting devices or arrangements for agricultural machines or implements
- A01B63/02—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors
- A01B63/10—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means
- A01B63/102—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means characterised by the location of the mounting on the tractor, e.g. on the rear part
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C11/00—Transplanting machines
- A01C11/02—Transplanting machines for seedlings
Definitions
- the present invention relates to a work vehicle.
- Patent Document 1 Conventionally, the technique of a work vehicle is well-known (for example, patent document 1).
- the description described in Patent Document 1 is to connect the plow 23 to the Totakula A in a state in which the plow 23 is moved and displaced in the left-right direction.
- Various members such as a link device are interposed between the traveling machine body and the work machine. And when the play of these members piles up, the inclination with respect to the traveling machine body of a working machine will change. As a result, a deviation occurs between the direction of the traveling machine body and the direction of the work machine.
- the present invention provides a work vehicle capable of adjusting the inclination of the work machine relative to the traveling machine body.
- the work vehicle according to claim 1 is: A work vehicle that supports a work machine so that it can be raised and lowered by a link device with respect to a traveling machine body, The traveling device is connected to the link device, the link device is provided with a front hitch, the work machine is provided with a rear hitch, the front hitch and the rear hitch are connected to each other, An adjustment mechanism is provided that can change the position of the working machine relative to the traveling machine body in the yaw direction by changing the inclination of the rear hitch with respect to the front hitch.
- the front hitch and the rear hitch are connected to each other at a plurality of points;
- the adjusting mechanism forms a fixed connecting portion that cannot change a distance between the front hitch and the rear hitch at a first connecting position between the front hitch and the rear hitch, and the front hitch and the rear hitch In the second connection location, and forming a change connection portion that can change the interval between the front hitch and the rear hitch, By changing the distance between the front hitch and the rear hitch at the second connecting point by the change connecting portion, the position of the work implement with respect to the traveling machine body is changed in the yaw direction.
- the change connecting portion has a rotating portion, and expands and contracts by rotating the rotating portion, By rotating the rotating part in one direction, the change connecting part is extended, and the distance between the front hitch and the rear hitch at the second connecting part is increased. The position of the working machine is changed to one side in the yaw direction, When the turning portion is turned in the other direction, the change connecting portion is contracted, and the distance between the front hitch and the rear hitch at the second connecting portion is reduced. The position of the working machine is changed to the other side in the yaw direction.
- the adjustment mechanism allows the inclination of the rear hitch to be changed with respect to the front hitch, and the connection state between the front hitch and the rear hitch.
- An accommodation mechanism is formed to hold the.
- the position of the working machine with respect to the traveling machine body is changed in the yaw direction by the adjustment mechanism.
- the tilt with respect to the aircraft can be adjusted.
- difference between the direction of a traveling machine body and the direction of a working machine can be improved.
- FIG. 6 Partial enlarged view of FIG. 6,
- FIG. 7 Partial sectional view of FIG. 7 (a). The figure which shows the state which removed the stop part from the rotation part from the state shown to Fig.7 (a).
- the stop part is rotated from the state shown in FIG.9 (b).
- the figure which shows the state which changed the position of the planting work machine with respect to a traveling body to the one side of a yaw direction (A) The figure which shows the state which rotated the stop part to the other direction and contracted the change connection part from the state shown in FIG. 8, (b) The stop part was rotated from the state shown in FIG.9 (b). The figure which shows the state fastened to the part. The figure which shows the state which changed the position of the planting work machine with respect to a traveling body to the other side of a yaw direction. The figure for demonstrating an accommodation mechanism. The perspective view which shows a 4th connection location.
- a rice transplanter 1 that is an example of a work vehicle will be described.
- the work vehicle may be a tractor, a combine, or the like, and is not limited to a rice transplanter.
- the forward direction is the forward direction of the rice transplanter 1 in a straight traveling posture
- the rearward direction is the backward direction of the rice transplanter 1 in a straight forward posture
- the vertical direction is the vertical direction of the rice transplanter 1 on a horizontal plane
- the horizontal direction is The left-right direction when the front is viewed from the rear of the rice transplanter 1 in a straight traveling posture.
- the rice transplanter 1 includes a traveling machine body 2 and a planting work machine 3 attached to the rear part thereof, and is planted by the planting work machine 3 while traveling by the traveling machine body 2.
- the planting work machine 3 is an example of a work machine.
- the traveling machine body 2 includes an engine 4, a transmission 5 that shifts power from the engine 4, a vehicle body frame 6 that supports the engine 4 and the transmission 5, a front wheel 7 and a rear wheel that are driven by power transmitted from the engine 4 and the transmission 5. 8 etc.
- a bonnet 17 is provided at the front of the traveling machine body 2. The bonnet 17 covers the engine 4.
- the power from the engine 4 and the transmission 5 is transmitted to the front axle case 9 and the rear axle case 10, respectively.
- the front axle case 9 is supported by the front part of the body frame 6, and the front wheel 7 is supported by the both right and left ends.
- the rear axle case 10 is supported by the rear portion of the body frame 6, and the rear wheels 8 are supported at both left and right ends thereof.
- the upper part of the body frame 6 is covered by the step 11, and the operator can move on the step 11.
- the driver's seat 12 is disposed in the middle of the front and rear of the traveling machine body 2, and a steering handle 13, an operating pedal 14, a dashboard 15 and the like are provided in front of the driver's seat 12.
- a steering handle 13 In addition to the steering handle 13, an operation tool for various operations and a display device are arranged on the dashboard 15.
- the planting work machine 3 includes a planting arm 31, a planting claw 32, a seedling stage 33, a float 34, and the like.
- the planting claw 32 is attached to the planting arm 31.
- the planting machine 3 is driven by a PTO shaft 16 extending rearward from the transmission 5. More specifically, power is transmitted from the PTO shaft 16 to the planting transmission case 36 provided in the planting work machine 3 through the planting center case 35, and the planting arm 31 and planting are planted from the planting transmission case 36. Power is distributed to the claws 32.
- the planting arm 31 is rotated by the power transmitted from the planting transmission case 36.
- a seedling is supplied to the planting claw 32 from a seedling stage 33.
- the planting claw 32 is inserted into the field and seedlings are planted so as to have a predetermined planting depth.
- a rotary planting claw is employed, but a crank type may be used.
- the seedling mount 33 is configured by a plate-like member, and is disposed so as to be inclined in a front-to-back direction and a low state in a side view of the body.
- a mounting surface on which the seedling mat is placed is formed according to the number of planting arms (the number of rice transplanters). Since the rice transplanter 1 of this embodiment is a six-plant rice transplanter, six placement surfaces are formed.
- the rice transplanter 1 is provided with a fertilizer application device 40.
- the fertilizer application device 40 is attached to a fertilizer tank 41, a feeding mechanism 42 for feeding fertilizer in the fertilizer tank 41 by a predetermined amount, and a float 34, respectively, and a groove forming device 43 for forming a groove for supplying fertilizer to the rice field,
- a groove forming auxiliary plate 44 that is fixed to the back surface of the vessel 43 and that opens at the rear, a supply hose 45 that connects an outlet of the feeding mechanism 42 and an opening of the groove forming auxiliary plate 44, and the like.
- the fertilizer in the fertilizer tank 41 is fed by the feeding mechanism 42 and then transferred to the groove forming device 43 through the supply hose 45, and the grooves formed on the surface by the groove forming device 43 and the groove forming auxiliary plate 44. Released into.
- the link device 20 supports the planting work machine 3 so as to be movable up and down with respect to the traveling machine body 2. As shown in FIG. 3, the front part of the link device 20 is connected to the rear part of the traveling machine body 2. A front hitch 50 is provided at the rear of the link device 20. The planting machine 3 is provided with a rear hitch 60. A rear hitch 60 is disposed behind the front hitch 50, and the front hitch 50 and the rear hitch 60 are connected to each other. When the rice transplanter 1 is viewed from above, the front hitch 50 and the rear hitch 60 are arranged on the center line L.
- the center line L is an imaginary line that extends in the front-rear direction through the left and right center of the traveling machine body 2.
- the traveling machine body 2 and the planting work machine 3 can be easily divided. Thereby, maintainability improves.
- a plurality of types of work machines can be easily replaced with the traveling machine body 2, the apparatus can be used for multiple purposes, and the versatility of the work vehicle is improved.
- the link device 20 includes a top link 21, a lower link 22, and an actuator (not shown).
- the front portion of the top link 21 and the front portion of the lower link 22 are rotatably connected to a rear column (not shown) of the traveling machine body 2 by pins 21a and 22a.
- the rear portion of the top link 21 and the rear portion of the lower link 22 are rotatably connected to the front hitch 50 by pins 21b and 22b.
- the lower link 22 is formed in a substantially Y shape with a single front side and a branched rear side.
- the actuator is interposed between the intermediate link 23 and the lower support 18 (see FIG. 1) of the traveling machine body 2.
- One end of the actuator is rotatably connected to the intermediate link 23 by a pin 23a, and the other end is rotatably connected to the lower support 18.
- the actuator is, for example, a hydraulic cylinder.
- a king pin 62 protrudes rearward from the rear hitch 60, and the planting work machine 3 is connected via the king pin 62.
- the extension of the actuator causes the link device 20 (the top link 21 and the lower link 22) to rotate downward about the connecting portion with the traveling machine body 2, and the planting work machine 3 is lowered.
- the link device 20 rotates upward about the connecting portion with the traveling machine body 2, and the planting work machine 3 is raised.
- the adjustment mechanism 70 is for changing the position of the planting work machine 3 with respect to the traveling machine body 2 in the yaw direction Y.
- the yaw direction Y is a direction in which the planting work machine 3 rotates in the horizontal plane with respect to the traveling machine body 2 around the front hitch 50.
- the front hitch 50 and the rear hitch 60 are connected at a plurality of locations.
- the front hitch 50 and the rear hitch 60 are connected at least at two locations.
- a fixed connection portion 80 is formed at one connection location (first connection location A), and the other connection portion (second connection location B).
- a change connecting portion 90 is formed.
- the first connection point A and the second connection point B have different positions in the left-right direction, and are arranged at intervals in the left-right direction.
- the first connection point A and the second connection point B are arranged with an interval in the left-right direction so that the center line L is the center. (See FIG. 3).
- the 1st connection location A is arrange
- the 2nd connection location B is arrange
- the adjusting mechanism 70 has a fixed connecting portion that cannot change the distance between the front hitch 50 and the rear hitch 60 at the first connecting position A between the front hitch 50 and the rear hitch 60. 80 is formed.
- the fixed connecting portion 80 fixes the bracket 51 formed on the front hitch 50 and the bracket 61 formed on the rear hitch 60 by fastening them with bolts 81 and nuts at the first connecting point A.
- interval of the front-back direction of the front hitch 50 and the back hitch 60 cannot be changed, but the said space
- the adjustment mechanism 70 can change the front-rear direction spacing S between the front hitch 50 and the rear hitch 60 at the second connection point B between the front hitch 50 and the rear hitch 60.
- a possible change connection 90 is formed.
- the change connecting portion 90 includes a rotating portion 91, a first fixing portion 92, a second fixing portion 93, and a stop portion 94.
- the change connecting portion 90 expands and contracts in the front-rear direction when the turning portion 91 is turned.
- the rotating portion 91 has a longitudinal shape that extends in the front-rear direction.
- a hole 91 a extending in the front-rear direction is formed in the rotation part 91, and the hole 91 a opens at the front end of the rotation part 91.
- An inner peripheral screw 91b is formed on the inner peripheral surface of the hole 91a.
- An outer peripheral screw 91 c is formed on the outer peripheral surface of the rotating portion 91.
- a flange portion 91 d is formed on the outer periphery of the rotating portion 91.
- the first fixing portion 92 is fixed to the front hitch 50 via the bracket 52.
- An outer peripheral screw 92 b is formed on the outer peripheral surface of the first fixing portion 92.
- the first fixing portion 92 is inserted into the hole 91 a of the rotating portion 91.
- the outer peripheral screw 92 b of the first fixing portion 92 is screwed with the inner peripheral screw 91 b of the rotating portion 91.
- the second fixing portion 93 is fixed to the rear hitch 60 via the bracket 63.
- An inner peripheral screw 93 a is formed on the inner peripheral surface of the second fixing portion 93.
- a rotating portion 91 is inserted through the second fixing portion 93.
- the inner peripheral screw 93 a of the second fixing portion 93 is screwed with the outer peripheral screw 91 c of the rotating portion 91.
- the rotating portion 91 penetrates through the second fixing portion 93 and the bracket 63 and protrudes rearward.
- the outer peripheral screw 92a of the first fixing portion 92 and the inner peripheral screw 93a of the second fixing portion 93 are configured as reverse screws.
- the change connection part 90 expands, and when the rotation part 91 is rotated in the other direction X2, the change connection part 90 contracts (FIG. 8, see FIG. 9A and FIG. 11A) (turnbuckle method).
- a small gap is formed between the front hitch 50 and the rear hitch 60 in order to secure the adjustment allowance by the turnbuckle method.
- the front-rear direction spacing S between the front hitch 50 and the rear hitch 60 at the second connection point B is changed (FIGS. 8, 9A, and 11A). )reference). This is because the change connecting portion 90 is interposed between the front hitch 50 and the rear hitch 60 in the second connecting portion B.
- an inner peripheral screw 94a is formed on the inner peripheral surface of the stopper portion 94.
- An inner peripheral screw 94 a of the stopper 94 is screwed with an outer peripheral screw 91 c of the rotating unit 91.
- the rotation part 91 is rotated around the axis.
- the operator engages a tool such as a wrench with the flange portion 91d of the rotating portion 91, and operates the tool to rotate the rotating portion 91.
- the operator rotates the rotation unit 91 to displace the position of the planting work machine 3 with respect to the traveling machine body 2 in the yaw direction Y, thereby adjusting the inclination of the planting work machine 3 with respect to the traveling machine body 2.
- the change connecting portion 90 is extended by turning the turning portion 91 in one direction X ⁇ b> 1. Thereby, the space
- the interval between the front hitch 50 and the rear hitch 60 is not changed by the fixed connection portion 80.
- the inclination of the rear hitch 60 with respect to the front hitch 50 is changed.
- the position of the planting work machine 3 with respect to the traveling machine body 2 is changed to one side Y1 of the yaw direction Y (see FIG. 10).
- the change connecting portion 90 contracts when the turning portion 91 is turned in the other direction X2.
- the interval between the front hitch 50 and the rear hitch 60 is not changed by the fixed connection portion 80. Thereby, the inclination of the rear hitch 60 with respect to the front hitch 50 is changed. Thereby, the position of the planting work machine 3 with respect to the traveling machine body 2 is changed to the other side Y2 of the yaw direction Y (see FIG. 12).
- the shim adjustment method when the interval S between the front hitch 50 and the rear hitch 60 is changed, (i) the connection between the front hitch 50 and the rear hitch 60 at the second connection point B is once released, and (ii) the shim (Iii) The operation of reconnecting the front hitch 50 and the rear hitch 60 is performed via the changed shim.
- the shim adjustment method when the interval S between the front hitch 50 and the rear hitch 60 is changed, the connection between the front hitch 50 and the rear hitch 60 is once released, and then the front hitch 50 and the rear hitch 60 Must be reconnected, which complicates the work.
- the interval S between the front hitch 50 and the rear hitch 60 can be changed by rotating the rotation portion 91, so that the inclination of the planting work machine 3 with respect to the traveling machine body 2 can be changed. This is advantageous in that the adjusting operation can be performed smoothly.
- the front hitch 50 and the rear hitch 60 are further connected to each other at a third connection point C.
- the third connection location C is disposed above the first connection location A and the second connection location B. Further, when the rice transplanter 1 is viewed from above, the third connection point C is disposed on the center line L.
- An accommodation mechanism 100 is formed at the third connection location C.
- the accommodation mechanism 100 includes a pin 101 and a hook 102.
- the pin 101 is provided in the rear hitch 60 and has a cylindrical shape extending in the left-right direction.
- the hook 102 is provided in the front hitch 50, and a portion hooked on the pin 101 is formed in an arc shape.
- the accommodation mechanism 100 connects the front hitch 50 and the rear hitch 60 to each other by hooking the hook 102 to the pin 101 from below at the third connection point C.
- the inner diameter of the portion hooked on the pin 101 in the hook 102 is slightly larger than the outer diameter of the pin 101. As a result, play is provided at an engagement portion between the pin 101 and the hook 102.
- the accommodation mechanism 100 When the inclination of the rear hitch 60 is changed with respect to the front hitch 50 (see (2) above), the accommodation mechanism 100 absorbs the swing of the pin 101 with respect to the hook 102 by the play and distorts the pin 101. Is suppressed from occurring. Accordingly, the accommodation mechanism 100 maintains the connection state between the front hitch 50 and the rear hitch 60 while allowing the inclination of the rear hitch 60 to the front hitch 50 to be changed at the third connection point C. .
- the accommodation mechanism 100 by suppressing the occurrence of distortion in the pin 101 by the accommodation mechanism 100, it is possible to prevent a decrease in the connection strength between the front hitch 50 and the rear hitch 60 at the third connection point C. Accordingly, the rear hitch 60 can be stably supported at the third connection point C. Thereby, the operation
- the front hitch 50 and the rear hitch 60 are further connected to each other at a fourth connection point D.
- the front hitch 50 and the rear hitch 60 are connected to each other by the bolts 110 to form a fixed connection portion in which the distance between the front hitch 50 and the rear hitch 60 cannot be changed.
- the 3rd connection location C exists in the left-right center of the upper part, and the 1st connection location A and the 2nd connection location B are located in the right-and-left middle part. And the fourth connecting portion D exists at the lower left and right center.
- connection location in which a change connection part is formed was one (2nd connection location B),
- connection points that employ the turnbuckle method or the shim adjustment method.
- at least one connecting portion where the fixed connecting portion is formed is necessary.
- the rice transplanter 1 The planting work machine 3 is supported by the link device 20 so as to be movable up and down with respect to the traveling machine body 2, A link device 20 is connected to the traveling machine body 2, a front hitch 50 is provided in the link device 20, a rear hitch 60 is provided in the planting work machine 3, and the front hitch 50 and the rear hitch 60 are connected to each other. , By changing the inclination of the rear hitch 60 with respect to the front hitch 50, an adjustment mechanism 70 that can change the position of the planting work machine 3 with respect to the traveling machine body 2 in the yaw direction Y is provided.
- the position of the planting work machine 3 with respect to the traveling machine body 2 is changed to the yaw direction Y by the adjustment mechanism 70.
- the inclination with respect to the traveling body 2 of the planting work machine 3 can be adjusted.
- difference between the direction of the traveling body 2 and the direction of the planting work machine 3 can be improved.
- the front hitch 50 and the rear hitch 60 are connected to each other at a plurality of points.
- the adjustment mechanism 70 forms a fixed connecting portion 80 in which the distance between the front hitch 50 and the rear hitch 60 cannot be changed at the first connection point A between the front hitch 50 and the rear hitch 60.
- a change connecting portion 90 that can change the interval S between the front hitch 50 and the rear hitch 60 is formed, By changing the distance S between the front hitch 50 and the rear hitch 60 at the second connecting point B by the change connecting portion 90, the position of the planting work machine 3 with respect to the traveling machine body 2 is changed in the yaw direction Y.
- the position of the planting work machine 3 with respect to the traveling machine body 2 in the yaw direction Y is changed by changing the distance S between the front hitch 50 and the rear hitch 60 in the second connection point B by the change connecting portion 90. Be changed.
- difference between the direction of the traveling body 2 and the direction of the planting work machine 3 can be improved.
- the change connecting part 90 has a rotating part 91 and expands and contracts by rotating the rotating part 91.
- the change connecting portion 90 is extended, and the distance S between the front hitch 50 and the rear hitch 60 at the second connecting portion B is increased, whereby the traveling machine body.
- the position of the planting work machine 3 with respect to 2 is changed to one side Y1 of the yaw direction Y,
- the change connecting portion 90 is contracted, and the distance S between the front hitch 50 and the rear hitch 60 at the second connecting portion B is reduced. 2 is changed to the other side Y2 of the yaw direction Y.
- the adjustment mechanism 70 allows the inclination of the rear hitch 60 relative to the front hitch 50 to be changed, and the connection between the front hitch 50 and the rear hitch 60.
- An accommodation mechanism 100 that maintains the state is formed.
- the rear hitch 60 when the inclination of the rear hitch 60 with respect to the front hitch 50 is changed by the adjusting mechanism 70, the rear hitch 60 can be stably supported by the accommodation mechanism 100 at the third connecting point C. Thereby, the operation
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- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Agricultural Machines (AREA)
- Transplanting Machines (AREA)
- Lifting Devices For Agricultural Implements (AREA)
Abstract
Description
特許文献1に記載の記述は、トタクラAに対してプラウ23を左右方向に移動変位させた状態で連結するものである。 Conventionally, the technique of a work vehicle is well-known (for example, patent document 1).
The description described in
作業機を走行機体に対してリンク装置により昇降可能に支持する作業車両であって、
前記走行機体には前記リンク装置が連結され、前記リンク装置には前ヒッチが設けられ、前記作業機には後ヒッチが設けられ、前記前ヒッチと前記後ヒッチとが互いに連結され、
前記前ヒッチに対する前記後ヒッチの傾きを変更することで、前記走行機体に対する前記作業機の位置をヨー方向に変更することができる調整機構が設けられる。 The work vehicle according to
A work vehicle that supports a work machine so that it can be raised and lowered by a link device with respect to a traveling machine body,
The traveling device is connected to the link device, the link device is provided with a front hitch, the work machine is provided with a rear hitch, the front hitch and the rear hitch are connected to each other,
An adjustment mechanism is provided that can change the position of the working machine relative to the traveling machine body in the yaw direction by changing the inclination of the rear hitch with respect to the front hitch.
前記前ヒッチと前記後ヒッチとが複数の箇所で互いに連結され、
前記調整機構は、前記前ヒッチと前記後ヒッチとの第一連結箇所において、前記前ヒッチと前記後ヒッチとの間隔を変更することができない固定連結部を形成し、前記前ヒッチと前記後ヒッチとの第二連結箇所において、前記前ヒッチと前記後ヒッチとの間隔を変更することができる変更連結部を形成し、
前記変更連結部により、前記第二連結箇所における前記前ヒッチと前記後ヒッチとの間隔が変更されることによって、前記走行機体に対する前記作業機の位置がヨー方向に変更される。 In the work vehicle according to
The front hitch and the rear hitch are connected to each other at a plurality of points;
The adjusting mechanism forms a fixed connecting portion that cannot change a distance between the front hitch and the rear hitch at a first connecting position between the front hitch and the rear hitch, and the front hitch and the rear hitch In the second connection location, and forming a change connection portion that can change the interval between the front hitch and the rear hitch,
By changing the distance between the front hitch and the rear hitch at the second connecting point by the change connecting portion, the position of the work implement with respect to the traveling machine body is changed in the yaw direction.
前記変更連結部は、回動部を有し、前記回動部が回動されることで伸縮し、
前記回動部が一方向に回動されることにより、前記変更連結部が伸長して、前記第二連結箇所における前記前ヒッチと前記後ヒッチとの間隔が大きくなることによって、前記走行機体に対する前記作業機の位置がヨー方向の一側へ変更され、
前記回動部が他方向に回動されることにより、前記変更連結部が収縮して、前記第二連結箇所における前記前ヒッチと前記後ヒッチとの間隔が小さくなることによって、前記走行機体に対する前記作業機の位置がヨー方向の他側へ変更される。 In the work vehicle according to
The change connecting portion has a rotating portion, and expands and contracts by rotating the rotating portion,
By rotating the rotating part in one direction, the change connecting part is extended, and the distance between the front hitch and the rear hitch at the second connecting part is increased. The position of the working machine is changed to one side in the yaw direction,
When the turning portion is turned in the other direction, the change connecting portion is contracted, and the distance between the front hitch and the rear hitch at the second connecting portion is reduced. The position of the working machine is changed to the other side in the yaw direction.
前記前ヒッチと前記後ヒッチとの第三連結箇所においては、前記調整機構により前記前ヒッチに対する前記後ヒッチの傾きが変更されることを許容しつつ、前記前ヒッチと前記後ヒッチとの連結状態を保持する融通機構が形成される。 In the work vehicle according to
At the third connection point between the front hitch and the rear hitch, the adjustment mechanism allows the inclination of the rear hitch to be changed with respect to the front hitch, and the connection state between the front hitch and the rear hitch. An accommodation mechanism is formed to hold the.
植付作業機3は、作業機の一例である。 As shown in FIGS. 1 and 2, the
The
図3に示すように、リンク装置20の前部は、走行機体2の後部に連結される。リンク装置20の後部には前ヒッチ50が設けられる。植付作業機3には後ヒッチ60が設けられる。前ヒッチ50の後方には後ヒッチ60が配置され、前ヒッチ50と後ヒッチ60とが互いに連結される。田植機1を上方から見たとき、前ヒッチ50と後ヒッチ60とは、中央線L上に配置されている。中央線Lは、走行機体2の左右中央を通って、前後方向に延びる仮想線である。 The
As shown in FIG. 3, the front part of the
トップリンク21の前部と、ロアリンク22の前部とは、ピン21a・22aにより、走行機体2のリア支柱(不図示)に対して回動可能に連結されている。トップリンク21の後部と、ロアリンク22の後部とは、ピン21b・22bにより、前ヒッチ50に対して回動可能に連結されている。
ロアリンク22は、前側が一本で後側が分岐した略Y字状に形成される。ロアリンク22の前部には、ピン23aにより中間リンク23の一端が回動可能に連結され、ロアリンク22の前後中途部にはピン23bにより中間リンク23の他端が回動可能に連結されている。中間リンク23と走行機体2の下部支持体18(図1参照)との間には前記アクチュエータが介装されている。前記アクチュエータの一端は中間リンク23に対してピン23aで回動可能に連結され、他端は下部支持体18に回動可能に連結されている。前記アクチュエータは、例えば、油圧シリンダである。
後ヒッチ60からはキングピン62が後方に突出しており、キングピン62を介して植付作業機3が連結されている。 As shown in FIGS. 4 and 5, the
The front portion of the
The
A
ヨー方向Yとは、植付作業機3が走行機体2に対して、前ヒッチ50を中心にして、水平面内で回動する方向である。 As shown in FIG. 3, the
The yaw direction Y is a direction in which the
前ヒッチ50と後ヒッチ60とは、少なくとも二箇所で連結される。前ヒッチ50と後ヒッチ60とが二箇所で連結される場合、一方の連結箇所(第一連結箇所A)には固定連結部80が形成され、他方の連結部(第二連結箇所B)には変更連結部90が形成される。 The
The
固定連結部80は、第一連結箇所Aにおいて、前ヒッチ50に形成されるブラケット51と、後ヒッチ60に形成されるブラケット61とを、ボルト81とナットで締め付けて固定している。これにより、第一連結箇所Aでは、前ヒッチ50と後ヒッチ60との前後方向の間隔を変更することができず、当該間隔が一定に固定される。 As shown in FIG. 3 and FIG. 4, the adjusting
The fixed connecting
変更連結部90が伸縮されることで、第二連結箇所Bにおける前ヒッチ50と後ヒッチ60との前後方向の間隔Sが変更される(図8、図9(a)、及び図11(a)参照)。これは、第二連結箇所Bにおいて、前ヒッチ50と後ヒッチ60との間に変更連結部90が介在しているからである。 The outer
By expanding and contracting the
作業者は、回動部91を回動させることで、走行機体2に対する植付作業機3の位置をヨー方向Yに変位させて、植付作業機3の走行機体2に対する傾きを調整する。
図9(a)に示すように、回動部91が一方向X1に回動されることにより、変更連結部90が伸長する。これにより、第二連結箇所Bにおける前ヒッチ50と後ヒッチ60との間隔Sが大きくなる。このとき、第一連結箇所Aにおいては、固定連結部80により前ヒッチ50と後ヒッチ60との間隔が変更されない。これにより、前ヒッチ50に対する後ヒッチ60の傾きが変更される。これにより、走行機体2に対する植付作業機3の位置が、ヨー方向Yの一側Y1に変更される(図10参照)。
図11(a)に示すように、回動部91が他方向X2に回動されることにより、変更連結部90が収縮する。これにより、第二連結箇所Bにおける前ヒッチ50と後ヒッチ60との間隔Sが小さくなる。このとき、第一連結箇所Aにおいては、固定連結部80により前ヒッチ50と後ヒッチ60との間隔が変更されない。これにより、前ヒッチ50に対する後ヒッチ60の傾きが変更される。これにより、走行機体2に対する植付作業機3の位置が、ヨー方向Yの他側Y2に変更される(図12参照)。 (2) Next, the
The operator rotates the
As shown in FIG. 9A, the
As shown in FIG. 11A, the
しかし、シム調節方式によると、前ヒッチ50と後ヒッチ60との間隔Sを変更するときに、前ヒッチ50と後ヒッチ60との連結を一旦解除してから、前ヒッチ50と後ヒッチ60とを連結し直さなければならないので、作業が煩雑になる。また、最適なシムを迅速に選択できるようになるためには、作業の熟練度が必要になる。これに対し、ターンバックル方式では、回動部91を回動させることで前ヒッチ50と後ヒッチ60との間隔Sを変更することができるので、走行機体2に対する植付作業機3の傾きを調整する作業を円滑に行うことができる点で有利である。 In addition, although the turnbuckle system was employ | adopted in order to change the space | interval S of the
However, according to the shim adjustment method, when the interval S between the
第三連結箇所Cは、第一連結箇所A及び第二連結箇所Bよりも上方に配置されている。また、田植機1を上方から見たとき、第三連結箇所Cは中央線L上に配置されている。
第三連結箇所Cには融通機構100が形成される。 As shown in FIG. 3, in the present embodiment, the
The third connection location C is disposed above the first connection location A and the second connection location B. Further, when the
An
ピン101は、後ヒッチ60に設けられ、左右方向に延びる円柱形状を有している。
フック102は、前ヒッチ50に設けられ、ピン101に引っ掛けられる箇所が円弧状に形成されている。
融通機構100は、第三連結箇所Cにおいて、ピン101に対してフック102を下方から引っ掛けることで、前ヒッチ50と後ヒッチ60とを互いに連結している。
フック102におけるピン101に引っ掛けられる箇所の内径は、ピン101の外径よりも僅かに大きい。これにより、ピン101とフック102との係合箇所に遊びが設けられる。 As shown in FIG. 13, the
The
The
The
The inner diameter of the portion hooked on the
これにより、融通機構100は、第三連結箇所Cにおいて、前ヒッチ50に対する後ヒッチ60の傾きが変更されることを許容しつつ、前ヒッチ50と後ヒッチ60との連結状態を保持している。 When the inclination of the
Accordingly, the
植付作業機3を走行機体2に対してリンク装置20により昇降可能に支持し、
走行機体2にはリンク装置20が連結され、リンク装置20には前ヒッチ50が設けられ、植付作業機3には後ヒッチ60が設けられ、前ヒッチ50と後ヒッチ60とが互いに連結され、
前ヒッチ50に対する後ヒッチ60の傾きを変更することで、走行機体2に対する植付作業機3の位置をヨー方向Yに変更することができる調整機構70が設けられる。 As described above, the
The
A
By changing the inclination of the
前ヒッチ50と後ヒッチ60とが複数の箇所で互いに連結され、
調整機構70は、前ヒッチ50と後ヒッチ60との第一連結箇所Aにおいて、前ヒッチ50と後ヒッチ60との間隔を変更することができない固定連結部80を形成し、前ヒッチ50と後ヒッチ60との第二連結箇所Bにおいて、前ヒッチ50と後ヒッチ60との間隔Sを変更することができる変更連結部90を形成し、
変更連結部90により、第二連結箇所Bにおける前ヒッチ50と後ヒッチ60との間隔Sが変更されることによって、走行機体2に対する植付作業機3の位置がヨー方向Yに変更される。 In the
The
The
By changing the distance S between the
変更連結部90は、回動部91を有し、回動部91が回動されることで伸縮し、
回動部91が一方向X1に回動されることにより、変更連結部90が伸長して、第二連結箇所Bにおける前ヒッチ50と後ヒッチ60との間隔Sが大きくなることによって、走行機体2に対する植付作業機3の位置がヨー方向Yの一側Y1へ変更され、
回動部91が他方向X2に回動されることにより、変更連結部90が収縮して、第二連結箇所Bにおける前ヒッチ50と後ヒッチ60との間隔Sが小さくなることによって、走行機体2に対する植付作業機3の位置がヨー方向Yの他側Y2へ変更される。 In the
The
When the turning
When the turning
前ヒッチ50と後ヒッチ60との第三連結箇所Cにおいては、調整機構70により前ヒッチ50に対する後ヒッチ60の傾きが変更されることを許容しつつ、前ヒッチ50と後ヒッチ60との連結状態を保持する融通機構100が形成される。 In the
At the third connection point C between the
2 走行機体
3 植付作業機
20 リンク装置
50 前ヒッチ
60 後ヒッチ
70 調整機構 DESCRIPTION OF
Claims (4)
- 作業機を走行機体に対してリンク装置により昇降可能に支持する作業車両であって、
前記走行機体には前記リンク装置が連結され、前記リンク装置には前ヒッチが設けられ、前記作業機には後ヒッチが設けられ、前記前ヒッチと前記後ヒッチとが互いに連結され、
前記前ヒッチに対する前記後ヒッチの傾きを変更することで、前記走行機体に対する前記作業機の位置をヨー方向に変更することができる調整機構が設けられることを特徴とする、
作業車両。 A work vehicle that supports a work machine so that it can be raised and lowered by a link device with respect to a traveling machine body,
The traveling device is connected to the link device, the link device is provided with a front hitch, the work machine is provided with a rear hitch, the front hitch and the rear hitch are connected to each other,
An adjustment mechanism is provided that can change the position of the work implement relative to the traveling machine body in the yaw direction by changing the inclination of the rear hitch with respect to the front hitch.
Work vehicle. - 前記前ヒッチと前記後ヒッチとが複数の箇所で互いに連結され、
前記調整機構は、前記前ヒッチと前記後ヒッチとの第一連結箇所において、前記前ヒッチと前記後ヒッチとの間隔を変更することができない固定連結部を形成し、前記前ヒッチと前記後ヒッチとの第二連結箇所において、前記前ヒッチと前記後ヒッチとの間隔を変更することができる変更連結部を形成し、
前記変更連結部により、前記第二連結箇所における前記前ヒッチと前記後ヒッチとの間隔が変更されることによって、前記走行機体に対する前記作業機の位置がヨー方向に変更されることを特徴とする、
請求項1に記載の作業車両。 The front hitch and the rear hitch are connected to each other at a plurality of points;
The adjusting mechanism forms a fixed connecting portion that cannot change a distance between the front hitch and the rear hitch at a first connecting position between the front hitch and the rear hitch, and the front hitch and the rear hitch In the second connection location, and forming a change connection portion that can change the interval between the front hitch and the rear hitch,
The position of the work implement with respect to the traveling machine body is changed in the yaw direction by changing the distance between the front hitch and the rear hitch at the second connection location by the change connecting portion. ,
The work vehicle according to claim 1. - 前記変更連結部は、回動部を有し、前記回動部が回動されることで伸縮し、
前記回動部が一方向に回動されることにより、前記変更連結部が伸長して、前記第二連結箇所における前記前ヒッチと前記後ヒッチとの間隔が大きくなることによって、前記走行機体に対する前記作業機の位置がヨー方向の一側へ変更され、
前記回動部が他方向に回動されることにより、前記変更連結部が収縮して、前記第二連結箇所における前記前ヒッチと前記後ヒッチとの間隔が小さくなることによって、前記走行機体に対する前記作業機の位置がヨー方向の他側へ変更されることを特徴とする、
請求項2に記載の作業車両。 The change connecting portion has a rotating portion, and expands and contracts by rotating the rotating portion,
By rotating the rotating part in one direction, the change connecting part is extended, and the distance between the front hitch and the rear hitch at the second connecting part is increased. The position of the working machine is changed to one side in the yaw direction,
When the turning portion is turned in the other direction, the change connecting portion is contracted, and the distance between the front hitch and the rear hitch at the second connecting portion is reduced. The position of the working machine is changed to the other side of the yaw direction,
The work vehicle according to claim 2. - 前記前ヒッチと前記後ヒッチとの第三連結箇所においては、前記調整機構により前記前ヒッチに対する前記後ヒッチの傾きが変更されることを許容しつつ、前記前ヒッチと前記後ヒッチとの連結状態を保持する融通機構が形成されることを特徴とする、
請求項2又は請求項3に記載の作業車両。 At the third connection point between the front hitch and the rear hitch, the adjustment mechanism allows the inclination of the rear hitch to be changed with respect to the front hitch, and the connection state between the front hitch and the rear hitch. An accommodation mechanism is formed to hold the
The work vehicle according to claim 2 or claim 3.
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CN112690069A (en) * | 2020-12-28 | 2021-04-23 | 北京德邦大为科技股份有限公司 | Unmanned crawler-type multi-row intelligent no-tillage planter |
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JP2017108698A (en) | 2017-06-22 |
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