JP5744652B2 - Passenger rice transplanter - Google Patents

Description

  The present invention relates to a riding rice transplanter.

  Conventionally, there exists what was indicated by patent documents 1 as one form of riding rice transplanter. That is, in Patent Document 1, a planting unit is connected in front of the traveling unit, a planting mission case is provided in the planting unit, and planting claws are attached to the planting mission case so as to plant and rotate. . Then, a planting mission case is interlocked and connected to a power source provided in the traveling unit via a power transmission mechanism, and the planting claw is configured to rotate. Also, a planting mission case is provided with a clutch mechanism, and the clutch mechanism can be connected / disconnected by an operating lever provided in the traveling section, so that the planting claw planting rotation operation can be started / stopped.

  Here, when the clutch mechanism is stopped, the planting claw is stopped at a predetermined position, for example, at an intermediate position between the farm scene and the lower end of the seedling stand, thereby avoiding the problems described below. That is, when the planting claw is brought into contact with or close to the field scene and stopped, the planting claw interferes with the field and is deformed or a seedling is clogged. Moreover, when it stops in the state which contacted the seedling mounting stand, there exists a malfunction that a planting nail | claw interferes with the seedling mat mounted on the seedling mounting stand.

Japanese Utility Model Publication No. 60-21929

  However, in the above-described riding rice transplanter, the operator can instantaneously stop the planting claw planting rotation operation by operating the operation lever at a timing to stop the planting claw at a predetermined position. Although it is possible to do so, there is a problem that the worker has to make timing.

  Therefore, the present invention can avoid the deformation of the planting claws and the clogging of the seedlings by cutting the planting clutch and stopping the planting claws at a predetermined position only when the planting part is lowered. The purpose is to provide a riding rice transplanter.

The riding rice transplanter according to the present invention described in claim 1 is configured such that a planting claw provided in a planting part is interlocked with a power source provided in a traveling part via a planting clutch, so that the planting clutch is disconnected. A riding rice transplanter in which a planting claw is interlocked with a predetermined position stopping operation in which the planting claw stops at a predetermined planting operation position, wherein a transmission clutch is provided in a transmission mechanism that interlocks and connects the power source and the planting clutch. The transmission clutch disconnection operation is linked to the raising operation of the attachment section, and the connection operation of the transmission clutch is linked to the lowering operation of the planting section, and the planting drive is operated until the predetermined position stopping operation of the planting claw is started. The planting claw is forcibly stopped by controlling the cutting . Here, the predetermined position is, for example, an intermediate position between the farm scene and the lower end of the seedling stage, and is a position where the planting operation of the planting claws is stopped.

  In such a riding rice transplanter, the transmission clutch is disconnected when the planting portion is raised, and the transmission clutch is connected when the planting portion is lowered. At this time, since the transmission clutch is disposed upstream of the transmission clutch with respect to the planting clutch, when the planting portion is raised, the transmission clutch is disconnected and power is transmitted to the downstream side. Not. That is, the planting claw is immediately stopped without going through the planting clutch disengaging operation, and the predetermined position stopping operation is not performed. Therefore, even if the planting claw is cutting the seedling block from the seedling mat on the seedling platform, the planting claw is not rotated and moved to the predetermined planting operation position, so that the seedling block is planted. It will not fall off or scatter from the claws.

  Further, when the planting part is lowered, the transmission clutch is connected and power is transmitted downstream thereof. Therefore, in such a state, power is also transmitted to the planting clutch, and when the planting clutch is operated to be disconnected, the planting claw is stopped at a predetermined position (the planting claw is rotated and stopped to a predetermined planting operation position). Is done. Therefore, even if the planting claw is cutting the seedling block from the seedling mat on the seedling stand when the predetermined position is stopped, the planting part is lowered, so that the seedling block is firmly planted in the field. be able to. In addition, even if the aircraft is moved, the planting claws are stopped in place, so that the planting claws can be dragged on the farm scene to prevent the planting claws from being deformed and the occurrence of seedling clogging. can do. Then, the planting drive is cut and controlled until the predetermined position stop operation of the planting claw is started by ascending the planting part to disengage the transmission clutch. It can be operated. As a result, the generation of floating seedlings can be prevented.

  The riding rice transplanter according to the present invention as set forth in claim 2 is the riding rice transplanter according to the present invention as set forth in claim 1, wherein one operation for connecting / disconnecting the planting clutch and one operation for raising / lowering the planting part are performed. The operation lever can be operated, and the lowering operation of the planting part precedes the connection operation of the planting clutch, while the cutting operation of the planting clutch precedes the raising operation of the planting part.

  In such a riding rice transplanter, the planting clutch can be connected after the planting portion is lowered by operating one operating lever downward. Further, by operating one operating lever to the ascending side, the planting part can be raised after the planting clutch is disconnected. At this time, when the planting part is lowered and the planting clutch is disconnected by operating the operating lever upward, the planting claw is stopped at a predetermined position because the transmission clutch is connected. Further, when the planting part is raised, the planting clutch is disconnected, and after the planting claw is stopped at a predetermined position, the transmission clutch is disconnected.

  Therefore, the operation of stopping the predetermined position of the planting claw when the planting clutch is disengaged is always performed in a state where the planting part is lowered, so that the planting claw cuts the seedling block from the seedling mat on the seedling mount. Even so, the seedling block can be firmly planted in the field. And since the planting claw is stopped at a predetermined position, even if the aircraft is moved in a state where the planting part is lowered, the planting claw is dragged on the field scene to deform the planting claw, etc. And the occurrence of seedling clogging can be avoided. Further, since the transmission clutch is disengaged in the state where the planting portion is raised, the planting claw is not planted with the posture stopped at the predetermined position. That is, the seedling block is not dropped or scattered from the planting claw.

  A passenger rice transplanter according to the present invention as defined in claim 3 is the passenger rice transplanter according to the present invention as defined in claim 2, wherein the planting portion is operated to operate the lever from a neutral position to a predetermined position in one direction. In addition to interlocking the descent operation, the connection operation of the planting clutch is interlocked with repeated lever operation from the neutral position of the operation lever to a predetermined position in one direction, while it is also implanted in lever operation from the neutral position of the operation lever to a predetermined position in the other direction. In conjunction with the cutting operation of the attached clutch, the raising operation of the planting part is linked to the repeated lever operation from the neutral position of the operation lever to the predetermined position in the other direction, and the drive can be turned on and off while the planting part is lowered. It is characterized by that.

  In such a riding rice transplanter, the transmission clutch is engaged by operating one operating lever once on the lowering side, and for example, the second operation on the lowering side is subsequently operated to connect the planting clutch. Thus, the planting claw can be stopped at a predetermined position. Further, the transmission lever and the planting clutch are disconnected by operating the operation lever once up, and the planting part can be raised up by performing the second operation on the ascending side, for example. . At this time, if the planting clutch is disconnected by operating the operating lever once in the state where the planting part is lowered, the transmission clutch is connected, so that the planting claw stops at a predetermined position. Is done. Further, for example, when the planting portion is raised by continuously performing the second operation on the ascending side, the transmission clutch is also disconnected.

  In this way, it is possible to easily perform the raising / lowering operation of the planting portion, the connecting / disconnecting operation of the planting clutch, and the connecting / disconnecting operation of the transmission clutch with one operating lever. That is, the driving of the planting part can be turned on and off with the planting part lowered. As a result, the operability of the planting clutch and the transmission clutch by the operation lever can be improved.

  The present invention has the following effects. That is, in the present invention, the planting claw is operated to stop at a predetermined position along with the cutting operation of the planting clutch only when the planting part is lowered by providing the transmission clutch. Scattering of the seedling block cut by the attached claw from the seedling mat, deformation of the planted claw, and seedling clogging can be avoided. In addition, since it is not necessary to set the timing for disengaging the planting clutch, the mental fatigue of the operator can be reduced.

The partially cutaway side view of the riding rice transplanter which concerns on this embodiment. Plane explanatory drawing of an operation panel part. Plane explanatory drawing of an operation lever. Power transmission explanatory drawing. The power transmission expansion explanatory view of a stock shift case. Cross-sectional explanatory drawing of a planting clutch. Control block diagram. flowchart.

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

  Reference numeral 1 shown in FIG. 1 denotes a riding rice transplanter according to the present embodiment. The riding rice transplanter 1 connects a planting part 4 to a rear part of a traveling part 2 via a lifting link mechanism 3 so as to be raised and lowered. G is a field, g is a cultivator, and W is a water surface.

  The traveling unit 2 includes a lower body 10 and an upper body 11. In the lower body 10, front axle cases 13, 13 are interlocked and connected to the left and right sides of the mission unit 12, and front wheels 15, 15 are attached to the front axle cases 13, 13 via front axles 14, 14. A rear axle case 17 is connected to the rear surface portion of the mission portion 12 via a rectangular pipe-like connecting body 16 extending in the front-rear direction, and rear wheels 19, 18 are connected to the left and right side portions of the rear axle case 17 via rear axles 18, 18. 19 is attached. At the front part of the mission unit 12, a motor support frame 20 is provided so as to protrude forward, and a motor unit 22 such as an engine 21 (see FIG. 3) is provided on the motor support frame 20. An auxiliary support frame 23 is provided on the mission unit 12 and the rear axle case 17.

  The upper body 11 is provided with a bonnet 30 that covers the motor unit 22 at the front, and an operation panel unit 31 at the upper end of the bonnet 30. A cover 32 is stretched over the auxiliary support frame 23 behind the bonnet 30. The cover body 32 is formed so that the rear half is higher than the front half with a step, and the driver's seat 33 is placed in the rear half.

  As shown in FIG. 2, the operation panel 31 is provided with a display 34 at the front and a steering wheel 36 via a support shaft 35 at the rear. A main transmission lever 38 is disposed on the left side of the steering wheel 36 via a lever guide groove 37, while an operation lever 39 is disposed on the right side of the steering wheel 36. Reference numeral 40 denotes an operation switch group. Thus, the driving unit 5 is formed by the steering wheel 36 and the like provided in the operation panel unit 31 and the driver's seat 33.

  The planting unit 4 is linked to the planting mission unit 50 via a plurality of planting cases 51 extending in the front-rear direction via an interlocking case 52 extending in the left-right direction. The center portion of the rotary case 53 is interlocked and connected to the rear end portion of the planting case 51 so as to be able to rotate around the horizontal axis, and planting claws 54 are attached to both ends of the rotary case 53. On the planting case 51, a seedling stage 55 is placed upright so as to be laterally fed in the left-right direction, and a seedling mat (not shown) is placed on the seedling stage 55 so as to be vertically fed in the vertical direction. Yes. A float 56 is disposed below the planting case 51.

  With this configuration, the planting claw 54 is planted while drawing a rotation trajectory of a vertically long ellipse in conjunction with the rotation of the rotary case 53. That is, the planting operation is performed while the pair of planting claws 54 draws a rotation trajectory, so that the seedlings are sequentially cut from the seedling mat that is laterally fed and vertically fed by the seedling placing stand 55 and planted in the field.

  The elevating link mechanism 3 is interposed between a rear end support frame 41 that forms the rear end of the auxiliary support frame 23 of the traveling unit 2 and a hitch body 57 provided in the planting unit 4. The elevating link mechanism 3 pivotally connects the front end portions of the upper link 60 and the lower link 61 extending in the front-rear direction to the rear end support frame body 41 around the axis in the left-right direction, and is connected to the rear end portions of these links 60 and 61. The rear end connecting body 62 extending in the vertical direction is connected, and the rear end connecting body 62 is detachably connected to the hitch body 57. A lift cylinder 63 is interposed between the lift link mechanism 3 and the auxiliary support frame 23.

  With this configuration, the rear end connecting body 62 of the lifting link mechanism 3 and the planting part 4 are lifted in conjunction with the shortening operation of the lifting cylinder 63, and are lifted and lowered in conjunction with the extension operation of the lifting cylinder 63. The rear end coupling body 62 of the link mechanism 3 and the planting part 4 are lowered.

  Next, the power transmission structure of the riding rice transplanter 1 will be described with reference to FIG. That is, an input shaft 73 of a hydrostatic continuously variable transmission 72 provided in the transmission unit 12 is interlockedly connected to an output shaft 70 provided in the engine 21 via a belt transmission mechanism 71. The mission unit 12 includes a front wheel transmission mechanism 74, a rear wheel transmission mechanism 75, and a power take-out mechanism 76 that are linked and connected to the input shaft 73. Front wheels 15 and 15 are linked to the front wheel transmission mechanism 74 via front axles 14 and 14. A rear wheel transmission mechanism 78 incorporated in the rear axle case 17 is linked to the rear wheel transmission mechanism 75 via a rear axle transmission shaft 77. The rear wheels 19, 19 are linked to the rear wheel transmission mechanism 78 through the rear axles 18, 18. A transmission clutch case 80 is linked to the power take-off mechanism 76 via a transmission shaft 79, and a stock shift case 82 is linked to the transmission clutch case 80 via a transmission shaft 81. The transmission shaft 79 and the transmission shaft 81 form a transmission mechanism.

  The transmission clutch case 80 is disposed in the vicinity of the right side of the transmission unit 12 and an electromagnetic transmission clutch 90 is provided therein. Then, by connecting / disconnecting the transmission clutch 90, the power transmission to the inter-company transmission case 82 on the downstream side of the power transmission path can be freely connected / disconnected.

  In the inter-strain transmission case 82, the inter-strain transmission mechanism 91, the planting clutch 92, and the fertilizer application power take-out mechanism 93 are disposed in the case body 83. The inter-company transmission mechanism 91 is interlocked and connected to an inter-company transmission lever (not shown) provided in the driving unit 5 so that an inter-company transmission lever can be operated. As shown in FIG. 4, the inter-company transmission mechanism 91 includes an inter-company transmission shaft 94 extending in the front-rear direction, a counter shaft 95, and a cylindrical slide transmission gear support shaft 96 fitted on the inter-company transmission shaft 94. A high and low speed two-stage main transmission gear group 97 is interposed between the stock transmission shaft 94 and the counter shaft 95, and a high and low speed three-stage auxiliary transmission gear group is interposed between the counter shaft 95 and the slide transmission gear support shaft 96. 98 is interposed. The rear end portion of the inter-stock transmission shaft 94 and the input shaft 58 of the planting mission unit 50 provided in the planting unit 4 are connected to each other via a planting transmission shaft 99.

  As shown in FIG. 5, the planting clutch 92 includes a clutch body 100, a predetermined position stop cam body 101, and a cam operating body 102. The clutch main body 100 includes a one-side clutch formation body 103 provided at the rear end of the slide transmission gear support shaft 96 and an other-side clutch formation body 104 provided at the rear end portion of the inter-stock transmission shaft 94 so as to be slidable along the axis. And formed from. The predetermined position stop cam body 101 is connected to the back side of the other side clutch forming body 104, and a cam groove 105 is formed on the peripheral surface of the predetermined position stop cam body 101. The cam actuating body 102 is a solenoid actuator, and the operating piece 106 can be moved forward and backward with respect to the cam groove 105. When the operating piece 106 has advanced, the cam operating body 106 engages with the cam groove 105 and the operating piece 106 moves backward. In the state, the engagement is released from the cam groove 105. The cam actuating body 102 is electrically connected to the operation lever 39 of the operating unit 5 so that the planting clutch 92 can be connected / disconnected by the operation lever 39 via the cam actuating body 102. Reference numeral 107 denotes a pressing spring that is elastically biased toward the clutch connection side.

  In this way, when the operating piece 106 is advanced and engaged with the cam groove 105, the other side clutch forming body 104 is separated from the one side clutch forming body 103 via the cam groove 105. The clutch is slid against the elastic biasing force of the pressing spring 107, and the clutch is disengaged. That is, the inter-shaft transmission shaft 94 that slidably supports the other-side clutch forming member 104 is rotated by a certain amount (for example, 180 degrees) through the cam groove 105 and then stopped.

  Specifically, the planting claw 54 provided in the planting unit 4 includes an inter-plant transmission shaft 94 → a planting transmission shaft 99 → an input shaft 58 of the planting mission unit 50 → a planting mission unit 50 → an interlocking case 52. → Rotation power is transmitted through the planting case 51 → rotary case 53, but when the planting clutch 92 is disconnected, the inter-shaft transmission shaft 94 is rotated by a certain amount through the cam groove 105. The rotation is stopped later. As a result, when the planting clutch 92 is disconnected, the planting claw 54 is stopped at a predetermined planting operation position. That is, the planting claw 54 is stopped at a predetermined position. Here, in the present embodiment, the predetermined position is an intermediate position between the lower end portion of the seedling stage 55 and the upper surface of the float 56 and is a position where the planting operation of the planting claws 54 is stopped.

  The fertilizer application power take-out mechanism 93 interlocks and connects the base end side to the main transmission gear group 97, and projects the output shaft 108 on the distal end side upward so that power is output from the output shaft 108 to a fertilizer application (not shown). Can be taken out.

  Next, the control block diagram shown in FIG. 6 will be described. That is, the riding rice transplanter 1 according to the present embodiment includes a controller 120 having a control function of a personal computer or the like including a CPU (Central Processing Unit), a memory, and other electronic devices. On the input side of the controller 120, a lift operation sensor 121 such as a limit switch that is disposed at the base end portion of the operation lever 39 to detect the lift operation of the operation lever 39 and a base end portion of the operation lever 39 are provided. A descent operation sensor 122 such as a limit switch for detecting the descent operation of the operation lever 39, a highest ascending sensor 123 such as a rotary potentiometer provided in the elevating link mechanism 3 for detecting the highest ascending operation of the elevating link mechanism 3, A lowermost sensor 124 such as a rotary potentiometer that is provided in the mechanism 3 and detects the lowest lowering operation of the elevating link mechanism 3 is electrically connected. On the output side of the controller 120, an electromagnetic open / close solenoid valve (not shown) that opens and closes a hydraulic circuit to the cam operating body 102 of the electromagnetic transmission clutch 90, the planting clutch 92, and the lift cylinder 63 is electrically connected. Yes.

  With this configuration, when the controller 120 receives the detection information from each of the sensors 121 to 124, the transmission clutch 90, the cam operating body 102 of the planting clutch 92, and the open / close electromagnetic of the elevating cylinder 63 based on the detection information. Control information is transmitted to each valve, and the operations of the clutches 90 and 92 and the lifting cylinder 63 are appropriately controlled. In other words, when the controller 120 receives the first ON signal of the lowering operation sensor 122, the controller 120 extends the lifting cylinder 63 to lower the planting unit 4 and connects the transmission clutch 90. When the second ON signal is received continuously (within a predetermined short time), the planting clutch 92 is connected. On the other hand, when the controller 120 receives the first ON signal of the ascending operation sensor 121, the controller 120 disconnects the planting clutch 92 and stops the planting claw 54 at a predetermined position. When the second ON signal is received continuously (within a predetermined short time), the elevating cylinder 63 is shortened to raise the planting unit 4 and the transmission clutch 90 is disconnected.

  Specifically, when the operation lever 39 shown in FIGS. 2 and 6 is tilted once from the neutral posture to the predetermined limit operation angle, the planting unit 4 is lowered. At this time, the transmission clutch 90 is connected. When the operation lever 39 is tilted again (second time) from the neutral posture to the predetermined limit operation angle again (continuously), the planting clutch 92 is connected. Further, when the operation lever 39 is tilted once from the neutral posture to the rear (frontward) to a predetermined limit operation angle, the planting clutch 92 is disconnected. When the operation lever 39 is tilted again (second time) from the neutral posture to the rear (front) to a predetermined limit operation angle (second time), the planting unit 4 is raised. At this time, the transmission clutch 90 is disconnected. Therefore, the transmission clutch 90 is connected in the state where the planting part 4 is lowered, and the planting clutch 92 can be connected / disconnected. In addition, the operation lever 39 is tilted backward once from the neutral posture to disengage the planting clutch 92, and the operation lever 39 is again tilted backward from the neutral posture (second time). By cutting the transmission clutch 90, the planting claw 54 is forcibly controlled by cutting the planting drive until the planting claw 54 is stopped at a predetermined position (even during the predetermined position stopping operation). Can be stopped.

  This will be described more specifically with reference to FIG. When the lowering operation sensor 122 is turned ON by operating one operating lever 39 once downward (200 Yes), the elevating cylinder 63 is extended and the transmission clutch 90 is connected (201). Then, when the lowest sensor 124 is turned ON (202 Yes), the elevating cylinder 63 stops extending (203). That is, the planting part 4 is lowered to the state where the float 56 floats on the water surface W of the field G. When the second operation is performed again on the lower side (204 Yes), the planting clutch 92 is turned on (connection operation) (205). If the lowering operation sensor 122 is not turned on (200No or 204No), the controller 120 determines whether the raising operation sensor 121 is turned on (207).

  By operating the operation lever 39 once in the ascending direction, when the ascending operation sensor 121 is turned on (207 Yes), the elevating cylinder 63 is shortened and the planting clutch 92 is turned off (disconnection operation) (208). At this time, the planting claw 54 is stopped at a predetermined position. When the second operation is again performed on the ascending side (209 Yes), the elevating cylinder 63 is shortened and the transmission clutch 90 is turned off (disengagement operation) (210). Then, when the highest sensor 123 is turned on (211 Yes), the elevating cylinder 63 is shortened and stopped (212). That is, the planting part 4 will be in the state raised most. If the ascending operation sensor 121 is not turned on (207 No or 209 No), the controller 120 determines whether the descending operation sensor 122 is turned on (200).

  Therefore, the predetermined position stopping operation of the planting claw 54 performed when the planting clutch 92 is disconnected is always performed in a state where the planting unit 4 is lowered, so that the planting claw 54 is removed from the seedling mat on the seedling mount 55. Even if the seedling block is cut, the seedling block can be firmly planted in the field. And since the planting claw 54 is stopped at a predetermined position, the planting claw 54 is dragged on the tillage g and planted even if the aircraft is moved with the planting part 4 lowered. It is possible to avoid the deformation of the claws 54 and the occurrence of seedling clogging. Further, since the transmission clutch 90 is disengaged in the state where the planting part 4 is raised, the planting claw 54 does not perform the planting operation with the posture stopped at the predetermined position. That is, the seedling block is not dropped or scattered from the planting claw 54.

  In the present embodiment, the elevating link mechanism 3 is provided with the lowest descending sensor 124 that detects the lowest descending operation of the elevating link mechanism 3, and the controller 120 controls each clutch 90, 92 based on the detection information of the lowest descending sensor 124. However, instead of this, the controller 120 may similarly control each of the clutches 90 and 92 based on detection information when the float 56 is in contact with the ground.

  In addition, as described above, the operation is not limited to the configuration in which the single operation lever 39 is tilted once or a plurality of times in a predetermined direction, but the connection / disconnection operation of the planting clutch 92 is simply performed for the connection / disconnection operation of the planting clutch. While the cutting operation of the transmission clutch 90 is linked to the raising operation of the planting unit 4, the connection operation of the transmission clutch 90 can be linked to the lowering operation of the planting unit 4.

  With this configuration, when the planting part 4 is raised, the transmission clutch 90 is disconnected, and when the planting part 4 is lowered, the transmission clutch 90 is connected. At this time, since the transmission clutch 90 is disposed on the upstream side of the transmission path with respect to the planting clutch 92, when the planting portion 4 is lifted, the transmission clutch 90 is disconnected and moved to the downstream side thereof. The power is not transmitted. That is, the planting claw 54 is immediately stopped without the cutting operation of the planting clutch 92, and the predetermined position stopping operation is not performed. Therefore, even if the planting claw 54 cuts the seedling block from the seedling mat on the seedling mount 55, the planting claw 54 is not rotated and moved to a predetermined planting operation position. The block is not dropped or scattered from the planting claw 54.

  Further, when the planting part 4 is lowered, the transmission clutch 90 is connected and power is transmitted downstream thereof. Accordingly, in such a state, power is also transmitted to the planting clutch 92, and when the planting clutch 92 is operated to be disconnected, the planting claw 54 is moved to a predetermined position (the planting claw is rotated to a predetermined planting operation position). Is stopped). Therefore, even if the seedling block is cut from the seedling mat on the seedling stage 55 when the planting claw 54 is stopped at a predetermined position, the planting part 4 is lowered, so that the seedling block is removed from the field. Can be planted steadily. Further, even if the machine is moved, the planting claws 54 are stopped at a predetermined position, so that the planting claws 54 are dragged on the tilling board g to deform the planting claws 54 or the seedlings are jammed. Can be avoided.

  Further, the transmission clutch 90, the planting clutch 92, and the elevating cylinder 63 are mechanically interlocked and connected to the operation lever 39 via an interlocking connection mechanism or the like, and the operations of the clutches 90 and 92 and the elevating cylinder 63 are controlled by the operation lever 39. It is also possible to operate appropriately.

  The transmission clutch 90, the planting clutch 92, and the elevating cylinder 63 can be electrically or mechanically connected to the operation lever 39, respectively.

  In this embodiment, the transmission clutch 90 and the planting clutch 92 are operated by the single operation lever 39. However, a lever for operating the transmission clutch 90 is provided separately, and the transmission is performed by this lever. By connecting / disconnecting the clutch 90, the planting claw 54 is forcibly controlled by connecting / disconnecting the planting drive until the planting claw 54 is stopped at a predetermined position (even during the predetermined position stopping operation). It is also possible to stop the operation.

DESCRIPTION OF SYMBOLS 1 Passenger rice transplanter 2 Traveling part 3 Lifting link mechanism 4 Planting part 39 Operation lever 63 Lifting cylinder 90 Transmission clutch 92 Planting clutch

Claims (3)

The planting claw provided in the planting part is linked to the power source provided in the traveling unit via the planting clutch, and the planting claw stops at a predetermined planting operation position in the cutting operation of the planting clutch. A passenger rice transplanter linked with position stop movement,
A transmission clutch is provided in a transmission mechanism that interlocks and connects the power source and the planting clutch,
The interlocking operation of the transmission clutch is linked to the raising operation of the planting part, and the connecting operation of the transmission clutch is linked to the descending operation of the planting part,
A riding rice transplanter characterized in that the planting drive is cut and controlled so that the planting claw can be forcibly stopped before the planting claw is stopped at a predetermined position . The connection / disconnection operation of the planting clutch and the raising / lowering operation of the planting part can be operated with one operation lever.
While letting the lowering operation of the planting part precede the connection operation of the planting clutch,
The riding rice transplanter according to claim 1, wherein a cutting operation of the planting clutch is preceded by a lifting operation of the planting part. The lowering operation of the planting part is linked to the lever operation from the neutral position of the operation lever to a predetermined position in one direction, and the connection operation of the planting clutch is performed for repeated lever operations from the neutral position of the operation lever to the predetermined position in one direction. While interlocking,
The operation of the planting clutch is linked to the lever operation from the neutral position of the control lever to the predetermined position in the other direction, and the lifting operation of the planting part is linked to the repeated lever operation from the neutral position of the control lever to the predetermined position in the other direction. The riding rice transplanter according to claim 2, wherein the driving can be turned on and off while the planting portion is lowered.

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