JP4996291B2 - Passenger transplanter - Google Patents

Description

  The present invention relates to a riding transplanter equipped with an operation tool for performing a raising / lowering operation of a planting work machine and an on / off operation of a planting clutch.

  According to a conventionally known riding transplanter, it is common to perform an operation of decelerating the aircraft, cutting the planting clutch, and raising the planting machine before turning the machine during planting work in a field. After turning the aircraft, it is common to lower the planting work machine, engage the planting clutch, perform an operation to accelerate the machine, and restart the planting work.

  In order to quickly complete a series of operations for turning the aircraft during planting as described above, the planting machine is lifted and operated by a single operation, and the planting clutch is disengaged. A riding transplanter shown in Patent Document 1 in which a second operation tool that lowers a planting work machine by a single operation and performs an operation of engaging a planting clutch is provided in a traveling shift lever is known.

Moreover, the riding transplanter shown in Patent Document 2 provided with a first operation tool that can be operated to an arbitrary height of the planting work machine separately from the traveling gear shift lever provided with the second operation tool. Is also known. According to the riding transplanter, it is possible to quickly complete a series of operations performed for turning the body during planting work, and the general operation tool allows the planting machine to be operated with the planting clutch disengaged. It is also possible to set the height to an arbitrary height according to the situation.
JP-A-9-233920 JP 2002-153107 A

  However, since the riding transplanter of Patent Document 1 is not provided with a general operation tool that can operate the raising / lowering height of the planting machine to an arbitrary height, the planting machine with the planting clutch disengaged is not provided. There is a disadvantage that the height cannot be arbitrarily adjusted according to the situation. In addition, the passenger transplanter of Patent Document 2 is provided with a traveling speed change lever provided with a second operation tool at a position away from the steering handle for performing the turning operation of the aircraft. The amount of movement of the operator's arm at the time increases, which hinders the rapid operation of a series of operations for turning the aircraft during planting work. Furthermore, the riding transplanter having substantially the same configuration as Patent Documents 1 and 2 raises the planting work machine to the highest position when the planting work machine is raised by the second operation tool, and lowers the planting work machine. Since the planting machine is lowered to the lowest position during operation, the amount of movement of the planting machine increases, and a series of operations for turning the machine during planting work can be completed quickly. It will be a hindrance.

In order to solve the above problems, the riding transplanter of the present invention firstly operates the planting clutch for raising and lowering the planting work machine 7 to an arbitrary height and turning on and off the power to the planting work machine 7. The first operating tool 22 and the planting work machine 7 are raised and operated by a single operation, the planting clutch is disengaged, and the planting work machine 7 is lowered and planted by another single operation. In the riding transplanter provided with the second operating tool 24 for performing the engagement operation of the clutch, the first operating tool 22 is provided in the vicinity of the steering handle 17, and the second operating tool 24 is provided in the traveling speed change lever 18. 18 is provided in the vicinity of the steering handle 17, and the planting work machine 7 automatically rises to the non-working position height with respect to the field when the second operating tool 24 is lifted, and the field when the second operating tool 24 is lowered. Working position height relative to the surface Auto down is configured to, by increasing operation of planting the working machine 7 according to the first operating member 22, the planting work by lowering operation and the second operating member 24 of the planting working machine 7 according to the first operating member 22 to The lowering operation of the machine 7 is canceled, and the raising operation of the planting work machine 7 by the first operation tool 22 and the planting by the second operation tool 24 are performed by the lowering operation of the planting work machine 7 by the first operation tool 22. While the configuration is such that the ascending operation of the work implement 7 is canceled, the elevating operation of the planting work implement 7 by the first operating tool 22 is not canceled depending on the operation of the second operating tool 24. It is said.

Second, the second operation tool 24 is configured to be operable only when the first operation tool 22 is in a state in which power can be turned on and off to the planting work machine 7.

  According to the riding transplanter of the present invention configured as described above, since both the first operating tool and the traveling speed change lever provided with the second operating tool are provided in the vicinity of the steering handle, When turning the machine, a single operation near the steering handle causes the planting work machine to be raised with the planting clutch disengaged or the planting machine to be lowered with the planting clutch engaged. As a result, a series of operations performed for turning the body during planting can be quickly completed, and the height of the planting work machine can be arbitrarily adjusted in the vicinity of the steering handle by the first operation tool. Can be operated at any height. In addition, the planting work machine automatically rises to the non-working position height with respect to the field when the second operating tool is lifted and automatically moves to the working position height with respect to the field scene when the second operating tool is lowered. Since it is configured to descend, there is no need to stop the lifting operation of the planting work machine, so that a series of operations performed for turning the machine body during planting work can be completed more quickly.

  Further, by configuring the first operation tool so that the operation due to the operation of the second operation tool can be canceled, a malfunction due to an operation mistake of the second operation tool is prevented in advance by the operation of the first operation tool by the operator. It becomes possible.

  Further, the second operating tool is configured to be operable only when the power to the planting work machine can be turned on and off by the first operating tool, so that the planting work machine can be operated at times other than during the planting work. Is prevented from moving up and down with the on / off of the planting clutch.

  1 and 2 are a side view and a plan view of a riding transplanter to which the present invention is applied. A traveling machine body 3 having front and rear wheels 1 and 2 is provided with a driver's seat 4 in the center, and a planting work machine 7 is connected to the rear through a link mechanism 6 so as to be movable up and down. Further, on both sides of the planting work machine 7, wheel-shaped markers 8 for drawing a running reference line in the next stroke of the farm scene and the like are provided (see FIG. 8).

The planting work machine 7 has a seedling platform 9, and is driven up and down by a hydraulic cylinder 11 that is an actuator. A plurality of leveling floats 13 are provided. One of the plurality of floats 13 is a sensing float 13 for controlling the elevation height of the planting work machine 7.
ing.

  The driver's seat 4 includes a seat 14 on which an operator is seated, and a front operation panel 16 provided in front of the seat 14, and a steering handle 17 is installed on the front operation panel 16.

  FIG. 3 is a plan view of the main part of the front operation panel. The front operation panel 16 includes a left panel surface 16a, a center panel 16b, and a right panel surface 16c. An HST lever (traveling shift lever) 18 is automatically provided on the left panel surface 16a, and an automatic operation is performed on the center panel surface 16b. The switch 19, the preparation switch 21, the work machine operation lever 22 (first operation tool), and the steering handle 17 are provided with various operation tools (not shown) on the right panel surface 16c.

  The automatic switch 19 is provided on the left side of the base end portion of the steering handle 17 and switches whether to automatically control the left and right markers 8 and 8 by pressing.

  The preparation switch 21 is provided on the left side (outer side) of the automatic switch 19 and is turned on by being pushed to operate a planting clutch on / off operation by the work implement operation lever 22 and a second operation described later. The planting work machine 7 can be operated by the tool 24, and the planting work machine 7 cannot be operated by the second operation tool 24 by being pushed and turned off.

  The HST lever 18 is swung along a guide groove 23 formed in the left panel surface 16a. After the HST lever 18 in the neutral position is swung to the right (inward) and then swung forward, the aircraft is driven forward. When the HST lever 18 is swung further forward, the traveling speed of the airframe is continuously switched to a high speed via a hydraulic stepless transmission (HST) (not shown) provided inside the airframe. On the other hand, when the HST lever 18 in the neutral position is swung to the left (outside) and then swung backward, the aircraft is driven to travel rearward. When the HST lever 18 is swung back further, the traveling speed of the airframe is switched to a high speed steplessly via the HST.

  4A is a plan view of the HST lever, FIG. 4B is a left side view of the HST lever, FIG. 4C is a rear view of the HST lever, and FIG. 4D is a right side view of the HST lever. is there. The HST lever 18 includes an up-down direction arm 18a and a left-right direction grip 18b. The grip portion 18b is formed in a substantially rectangular parallelepiped shape extending in the left-right direction, and is provided to project rearward from the upper end portion of the arm portion 18a.

  The grip portion 18b is provided with a second operation tool 24 including an up switch 24a and a down switch 24b. The 2nd operation tool 24 is an operation tool which performs raising / lowering operation etc. of the planting work machine 7, The raising switch 24a is the upper part of the right side surface of the grip part 18b, and the lowering switch 24b is the right side (inner side) side surface of the grip part 18b. The operator can easily operate with the thumb while holding the grip portion 18b with the left hand.

  When the planting work machine 7 is in the lowered working state, the planting clutch for turning on / off the power to the planting work machine 7 is turned off by pressing the lift switch 24a once, and the planting work machine 7 rises to a predetermined height. On the other hand, when the planting work machine 7 is in the non-working state in which the planting work machine 7 is lifted, the planting clutch for turning on / off the power to the planting work machine 7 is turned on and off by pressing the lowering switch 24b once. The attached work machine 7 descends to a working height along the field. As described above, the switching operation between the working state and the non-working state of the planting work machine 7 can be quickly performed by pressing the raising switch 24a and the lowering switch 24b once.

  FIG. 5 is a perspective view of the steering handle and the work implement operation lever. The work implement operating lever 22 is provided so as to protrude rightward from the base end portion of the steering handle 17, and is supported so as to be able to swing up and down and back and forth. When the operator releases the hand from the work implement operating lever 22, the distal end The part is configured to be restored to a basic posture that is naturally oriented obliquely upward.

  From the state where the planting work machine 7 is in contact with the field and the planting clutch is engaged, when the work machine operating lever 22 is operated to swing upward once, the planting work machine 7 is driven to rise, and further swings upward once more. When operated, the planting clutch is engaged. When the work implement operating lever 22 is swung downward once from the state where the planting work implement 7 is fixed at the raised position, the planting work implement 7 is driven to move downward, and when it is further swung downward once, the planting clutch. Is entered. The raising of the planting work machine 7 is stopped by swinging the working machine operating lever 22 downward when the planting work machine 7 is driven up, and the work machine operating lever 22 is moved down when the planting work machine 7 is driven down. The descending of the planting work machine 7 is stopped by performing the upward swing operation.

  Further, the left and right markers 8 and 8 are operated by swinging the work implement operating lever 22 back and forth. When the work implement operation lever 22 is operated to swing forward, the left marker 8 (see FIG. 8) is unlocked, and the left marker 8 is ejected and stored as the planting implement is moved up and down. On the other hand, when the work implement operating lever is operated to swing backward, the right marker 8 is unlocked, and the right marker 8 is shaken out and stored as the planting work implement 7 is moved up and down.

Next, the elevation control mechanism of the planting work machine 7 will be described.
FIG. 6 is a side view showing the lifting control mechanism of the planting work machine. The expansion and contraction of the hydraulic cylinder 11 that drives the planting machine 7 up and down is controlled by opening and closing the control valve 26 and switching operation. In addition, a lifter angle potentiometer 27 (see FIG. 10) that senses the elevation and movement of the planting work machine 7 is provided at the front end of the link mechanism 6 that connects the traveling machine body 3 and the planting work machine 7. ing.

  The control valve 26 includes an operation arm 28 having a substantially square shape in a side view for opening / closing and switching the control valve 26, an operation arm 29 for performing on / off operation of the planting clutch in the vicinity thereof, and the operation arm 28 and the operation A lifter cam 31 having a substantially fan shape in side view that engages with the arm 29, a lifter cam motor 32 that rotationally drives the lifter cam 31, and a lifter cam potentiometer 33 that senses the rotational position of the lifter cam 31 are provided. .

  In response to the operation of the first operation tool 22 or the second operation tool 24 described above, the lifter cam 31 is rotationally driven by the lifter cam motor 32 to operate the operation arm 28 and the operation arm 29. The lift position of the lifter cam 31 is sensed by the lifter cam potentiometer 33. The lifter cam 31 rotates the operating arm 28 and the operation arm 29 to a position where the planting work machine 7 is in the raised state and the planting clutch is in the disengaged state. ”Position, a“ fixed ”position in which the operation arm 29 and the operation arm 29 are rotated to a position where the planting work machine 7 is stopped and the planting clutch is disengaged, and the planting work machine 7 is operated by the sensing float 13. A "lowering" position in which the operating arm 28 and the operation arm 29 are rotated to a position where the planting clutch is in the disengaged state and the automatic lifting control state, and the planting work machine 7 is in the automatic lifting control state using the sensing float 13 and the planting clutch. Is positioned at any one of the “planting” positions in which the operating arm 28 and the operating arm 29 are rotated to a position where the operating arm 28 enters the position. .

Next, the automatic raising / lowering control mechanism of the planting work machine 7 by the sensing float 13 will be described in detail.
FIG. 7 is a side view showing an automatic lifting control mechanism using a sensing float of the planting machine. The sensing float 13 is supported so as to be able to rotate up and down with respect to the planting work machine 7. When the planting work machine 7 is lifted and the planting part 12 is separated from the field scene, the sensing float 13 is in a front-lowering state by its own weight. It is configured.

  The front end portion of the sensing float 13 having the above-described configuration is connected to the operation arm 28 of the control valve 26 described above via a linkage mechanism 34. When the planting work machine 7 is automatically controlled to be lifted and lowered by the sensing float 13, the linkage mechanism 34 is in a state where the planting work machine 7 is driven to move downward when the sensing float 13 enters the front lowering state. The operation arm 28 is configured to rotate in a direction in which the planting work machine 7 is driven to rise. As described above, the elevation height of the planting work machine 7 is controlled so as to obtain an optimal planting depth for the field scene.

Next, the marker ejection control mechanism will be described.
8 is a plan view of the marker ejection control mechanism, FIG. 9A is a side view of the marker ejection control mechanism in a state in which the marker is accommodated, and FIG. 8B is a marker ejection control in a state in which the marker is ejected. It is a side view of a mechanism. Each marker 8 is placed in one of a swinging posture that is swung out to the side of the planting unit 12 of the planting work machine 7 and a storage posture that is stood and stored along the side of the planting work machine 7. It is configured to be switchable in posture, and is biased in the swing-out direction by a spring (not shown).

  The marker swing-out control mechanism corresponds to the left and right operation arms 36 and 36 supported so as to be pivotable back and forth, and the roller arm 38 connected to the link mechanism 6 of the planting work machine 7 described above via the linkage rod 37. Left and right lock arms 39, 39 for locking the rotation of the operating arm 36.

  Each operating arm 36 is connected to the corresponding marker 8 through the wire 41 and rotates to the rearmost position when the marker 8 is in the swinging posture.

  The roller arm 38 has two rollers 38a and 38a that respectively contact the left and right operation arms 36. When the planting work machine 7 is raised, the roller arm 38 rotates to the front position and pushes each operation arm 36 forward to plant. When the working machine 7 is lowered, the working arm 36 is rotated rearward to allow the operating arm 36 to rotate backward. Since the marker 8 is urged in the swing-out direction, the operating arm 36 that is allowed to rotate backward automatically rotates to the rearmost position.

  Each lock arm 39 is supported so as to be able to swing back and forth, and is urged rearward by a spring (not shown). When the corresponding lock arm 39 is rotated to the rear position while the operation arm 36 is rotated to the front position, the operation arm 36 and the lock arm 39 are engaged, and the operation arm 36 is fixed at the front rotation position. Accordingly, the operation of the corresponding marker 8 is locked in the retracted state.

  The left and right lock arms 39 configured as described above are switched by a single switching arm 42 in the left-right direction. The switching arm 42 rotates left and right with the longitudinal center as a rotation fulcrum, the left lock arm 39 for the left marker 8 via the rod 43 at the left end, and the right lock 8 for the right marker 8 via the rod 43 at the right end. The right lock arms 39 are connected to each other.

  Then, the switching arm 42 tilts the left end forward and swings the left lock arm 39 forward to release the lock of the left marker 8 and tilts the right end backward and swings the right lock arm 39 backward to swing the right marker. "Left marker swinging posture" that locks 8 and the right end side tilts forward and the right lock arm 39 swings forward to unlock the right marker 8 and the left end side tilts backward and the left lock arm 39 swings backward. “Right marker swinging posture” in which the left marker 8 is locked by moving it, and the entire left end portion to the right end portion is directed substantially in the left-right direction, and both lock arms 39 are swung backward to lock both markers 8 in the retracted posture. The posture is switched to “both marker storing posture”.

  The switching arm 42 configured as described above is driven to switch the posture by the marker motor 44 and detects the switching of the posture by the detection switch 46.

Next, the control means of the planting machine 7 and the marker 8 via the control unit 47 will be described.
FIG. 10 is a block diagram showing a control system of the planting work machine. On the input side of the control unit 47 composed of a microcomputer or the like, the preparation switch 21, the automatic switch 19, the lifter cam potentiometer 33, the lifter angle potentiometer 27, the detection switch 46, and the work machine operation as the first operating tool are provided. A first operating tool raising switch 48 for detecting an upward swinging operation of the lever 22, a first operating tool lowering switch 49 for detecting a downward swinging operation, and a first operating tool left side marker switch 51 for detecting a forward swinging operation. A first operation tool right side marker switch 52 for detecting a backward swing operation, and the above-described ascent switch 24a (second operation tool up switch) and down switch 24b (second operation tool down switch) of the second operation tool 24. And are connected. On the other hand, the above-described lifter cam motor 32 and marker motor 44 are connected to the output side of the controller 47.

  FIG. 11 is a control flow diagram of the planting work machine. The control flow of the planting work machine 7 detects a vertical swing operation by the work machine operating lever 22, and starts the process from step S1. In step S1, detection by the first operating tool lowering switch 49 is performed, and if the downward swing operation of the work implement operating lever 22 is not detected, the process proceeds to step S2. In step S2, detection is performed by the first operating tool raising switch 48, and when an upward swing operation of the work implement operating lever 22 is detected, the process proceeds to step S3.

  In step S3, the state of the planting work machine 7 is detected. The planting machine 7 detects the state by the lifter cam potentiometer 33 and the like, and when the lifter cam 31 is positioned at the above-described “up” position, the planting work machine 7 assumes the “up state” and assumes the above-described “fixed” position. “Positioned” when positioned, “Automatic (automatically lowered)” when positioned in the “down” position described above, and “Planting” when positioned in the “planting” position described above The state is recognized by the control unit 47.

  Even in step S4, the state of the planting work machine 7 is detected. Also in step S5, the state of the planting work machine 7 is detected, and if it is “planting state”, the process proceeds to step S6. In step S6, the lifter cam 31 is positioned in the “down” position to place the planting work machine 7 in the “automatic state”, and the process returns to step S1.

  If an upward swing operation of the work implement operation lever 22 is not detected in step S2, the process proceeds to step S7. In step S7, the “waiting state for engaging planting clutch” is detected, and when the “waiting state for engaging planting clutch” is detected, the process proceeds to step S8. The “waiting state for planting clutch engagement” means a state in which the planting clutch has been engaged by the first operating tool 22, the second operating tool 24, etc., but the planting work machine 7 has not been lowered to the working position. And is detected by the lifter angle potentiometer 27 or the like.

  In step S8, “work machine lowering operation stop” is detected, and if “work machine lowering operation stop” is detected, the process proceeds to step S9. The “work machine lowering operation stop” means a lowering stop state of the planting work machine 7 in the “automatic state”, and is detected by the lifter angle potentiometer 27, the lifter cam potentiometer 33, and the like. In step S9, the lifter cam 31 is positioned at the “planting” position to place the planting work machine 7 in the “planting state”, and the process returns to step S1.

  In step S7, if the “waiting state for planting clutch” is not detected, the process returns to step S1. In step S8, the process is returned to step S1 even when “work machine lowering operation stop” is not detected.

  In step S3, when the “rising state” of the planting work machine 7 is detected, the process returns to step S1. When the “fixed state” of the planting work machine is detected in step S4, the process proceeds to step S10. In step S10, the lifter cam is positioned at the “raised” position to place the planting work machine 7 in the “raised state”, and the process returns to step S1.

  When the “automatic state” of the planting work machine 7 is detected in step S5, the process proceeds to step S11. In step S11, “work machine lowering operation stop” is detected. If “work machine lowering operation stop” is detected, the process proceeds to step S10. If “work machine lowering operation stop” is not detected, the process proceeds to step S12. In step S12, the lifter cam 31 is positioned at the “fixed” position to place the planting work machine 7 in the “fixed state”, and the process returns to step S1.

  If a downward swing operation of the work implement operation lever 22 is detected in step S1, the process proceeds to step S16. In step S16, detection by the preparation switch 21 is performed. When the ON state of the preparation switch 21 is detected, the process proceeds to step S17. In step S17, the state of the planting work machine 7 is detected, and if it is other than the “rising state”, the process proceeds to step S18.

  Even in step S18, the state of the planting work machine 7 is detected. Also in step S19, the state of the planting work machine 7 is detected. If it is “fixed state”, the process proceeds to step S20, and if it is “planting state”, the process returns to step S1. In step S20, the lifter cam 31 is positioned in the “down” position to place the planting work machine 7 in the “automatic state”, and the process returns to step S1.

  If the “rising state” of the planting work machine 7 is detected in step S17, the process proceeds to step S21. In step S21, the lifter cam 31 is positioned in the “fixed” position to set the planting work machine 7 in the “fixed state”, and the process returns to step S1.

  When the “automatic state” of the planting machine 7 is detected in step S18, the process proceeds to step S22. In step S22, “work machine lowering operation stop” is detected, and when “work machine lowering operation stop” is detected, the process proceeds to step S23. In step S23, the lifter cam is positioned at the “planting” position to place the planting machine 7 in the “planting state”, and the process returns to step S1.

  If “stop of work implement lowering operation” is not detected in step S22, the process proceeds to step S24. In step S24, information indicating that “the planting clutch is in a waiting state” is fed back to the control unit 47, and the process returns to step S1. Note that the operation of the work implement by the second operation tool 24 can be canceled by the first operation tool 22 by the processing flow of steps S17 to S24.

  When the OFF state of the preparation switch 21 is detected in step S16, the process proceeds to step S25. In step S25, the state of the planting work machine 7 is detected. If the state is “up”, the process proceeds to step S21. If the state is other than “up”, the process proceeds to step S26. Also in step 26, the state of the planting work machine 7 is detected. When the “fixed state” is detected, the process proceeds to step S27, and when a state other than the “fixed state” is detected, the process returns to step S1. In step S27, the lifter cam 31 is positioned at the “down” position to place the planting work machine 7 in the “automatic state”, and the process returns to step S1.

  According to the above processing flow, the raising / lowering control of the planting work machine 7 and the on / off control of the planting clutch are performed via the work machine operating lever 22. If the preparation switch 21 is not in the ON state by the processing of step S16, the planting clutch on / off operation by the downward swing operation of the work implement operation lever 22 cannot be performed.

  FIG. 12 is a control flow chart of the planting work machine 7 showing another embodiment. In step S3, when a state other than the “rising state” of the planting work machine 7 is detected, the process may proceed to step S13 shown in FIG. 12 instead of step S4 shown in FIG. In step S13, the state of the planting work machine 7 is detected, and when the “automatic state” of the planting work machine is detected, the process proceeds to step S11, and the same process as shown in FIG. If a state other than the “automatic state” of the planting work machine 7 is detected in step S13, the process proceeds directly to step S10 described above, and the same processing as that shown in FIG.

  According to the above processing flow, when the work implement operating lever 22 is operated to swing upward, the planting clutch 7 is switched to the “rising state” or the “fixed state” regardless of whether the planting clutch is engaged or disengaged. Operations can be performed.

  FIG. 13 is a flow chart of forced lifting control of the planting work machine. The forced ascending / descending control flow of the planting work machine 7 detects the operation by the second operation tool 24, and first starts the process from step S31. In step S31, detection by the preparation switch 21 is performed. When the ON state of the preparation switch 21 is detected, the process proceeds to step S32. When the OFF state of the preparation switch is detected, the process returns to step S31 and the detection by the preparation switch 21 is repeated. Do. In step S32, detection by the second operation tool lowering switch 24b is performed, and when the pressing operation of the lowering switch 24b of the HST lever 18 is detected, the process proceeds to step S33.

  In step S33, the lifter cam 31 is positioned in the “automatic” position to place the planting work machine 7 in the “automatic state”, and the process proceeds to step S34. In step S34, "work machine lowering operation stop" is detected. If "work machine lowering operation stop" is detected, the process proceeds to step S35, and if not detected, the process proceeds to step S36.

  In step S35, the lifter cam 31 is positioned at the “planting” position to place the planting work machine 7 in the “planting state”, and the process returns to step S31. In step S36, information indicating that “the planting clutch is in a waiting state” is fed back to the control unit 47, and the process returns to step S31.

  In step S32, if the pressing operation of the lowering switch 24b of the HST lever 18 is not detected, the process proceeds to step S37. In step S37, detection by the second operating tool raising switch 24a is performed, and when the pushing operation of the raising switch 24a of the HST lever 18 is detected, the process proceeds to step S38. In step S38, the lifter cam 31 is positioned in the “raised” position to place the planting work machine 7 in the “raised state”, and the process returns to step S31. In addition, the planting work machine 7 that has been driven up by the processing of step S38 is configured not to rise to the highest rise position, but to rise only to a non-working position height that leaves the planting unit 12 away from the field scene. Has been.

  In step S37, if the pressing operation of the raising switch 24a of the HST lever 18 is not detected, the process proceeds to step S39. In step S39, the “waiting state for planting clutch engagement” is detected. If the “waiting state for planting clutch engagement” is detected, the process proceeds to step S40, and if not detected, the process returns to step S31.

  In step S40, “work machine lowering operation stop” is detected, and if detected, the process proceeds to step S41, and if not detected, the process returns to step S31. In step S41, the lifter cam 31 is positioned at the “planting” position to place the planting work machine 7 in the “planting state”, and the process returns to step S31.

  With the above processing flow, the raising / lowering control of the planting work machine 7 and the on / off control of the planting clutch are performed via the second operation tool 24.

  FIG. 14 is a flow chart of marker ejection control. For marker out control, two flags, an auto marker flag and a planting clutch flag, and a double drop operation timer are used. The auto marker flag is a flag indicating whether or not the left or right marker 8 or 8 is automatically switched so that the left or right marker 8 is automatically switched. "Automatic OFF" indicates that the left and right markers 8 are not in the auto mode.

  The planting clutch flag detects the planting clutch on / off operation in an external routine, and indicates that the planting clutch on / off operation has been performed in the ON state, while the planting clutch on / off operation in the OFF state. Indicates that was not done. And it resets to an OFF state by resetting. The double drop operation timer is a timer that counts down from the set time to 0, and the swinging operation of the left and right markers 8 by the work implement operating lever 22 is allowed while the countdown is not completed.

  In the marker ejection control, first, the process proceeds to step S51. In step S51, detection by the preparation switch 21 is performed. When the ON state of the preparation switch 21 is detected, the process proceeds to step S52. When the OFF state of the preparation switch 21 is detected, the process returns to step S51 and the preparation switch 21 is returned. Step S51 is repeated until is turned on. For this reason, the marker 8 is not shaken out until the preparation switch 21 is turned ON.

In step S52, the state of the planting work machine 7 is detected, and when a state other than the “down state” of the planting work machine 7 is detected, the process proceeds to step S53. At step S53 both fell timer set in the set time T _1, the process proceeds to step S54. In step S54, the height of the planting work machine 7 is sensed, and if the planting work machine 7 is positioned at the highest rise height, the process proceeds to step S55, and is located at a position other than the position at the highest lift height. Then, the process returns to step S51.

  In step S55, detection is performed using an auto marker flag. When the auto marker flag "automatic ON" is detected, the process proceeds to step S56. In step S56, the planting clutch flag is detected, and if an ON state is detected, the process proceeds to step S57. In step S57, detection by the above-described detection switch 46 is performed. When the “both marker storing posture” of the switching arm 42 is detected, the process proceeds to step S58, and when any other state is detected, the process proceeds to step S59.

  In step S58, the switching arm 42 is driven to switch to the “right marker swinging posture”, and the process proceeds to step S60. On the other hand, in step S59, when the switching arm 42 is in the “right marker swinging posture”, the posture is switched to the “left marker swinging posture”, and when the switching arm 42 is in the “left marker swinging posture”, the “right marker swinging posture” is set. ”To move the posture to“ ”and proceed to step S60. In step S60, the planting clutch flag is reset, and the process proceeds to step S61.

  If “automatic OFF” of the auto marker flag is detected in step S55, the process proceeds to step S60. When the OFF state of the planting clutch flag is detected in step S56, the process proceeds to step S60.

  In addition, this riding transplanter starts the planting operation with the left side of the aircraft facing the corner of the field, so first switch the switching arm to the “right marker swinging posture” The running reference line is drawn by the marker. Then, the raising and lowering operation of the planting work machine 7 with the on / off operation of the planting clutch is performed, and then the planting operation is performed in the next process of the farm scene, and the marker 8 to be shaken is switched from the right marker 8 to the left marker 8. Thereafter, the right marker 8 and the left marker 8 are switched each time the planting operation is performed in the next process. Corresponding to the planting work and the drawing work process of the running reference line, the automatic dispensing control of the marker 8 is performed in steps S55 to S60.

  In step S61, detection is performed by the first operating tool left marker switch 51, and when a forward swing operation of the work implement operating lever 22 is detected, the process proceeds to step S62. In step S62, detection by the detection switch 46 is performed, and when a state other than the “left marker swinging posture” of the switching arm 42 is detected, the process proceeds to step S63. In step S63, the switching arm 42 is driven to switch the posture to the “left marker swinging posture”, and the process proceeds to step S64. In step S64, the auto marker flag is set to “automatic ON” and the process proceeds to step S69. If the “left marker swinging posture” of the switching arm 42 is detected in step S62, the process proceeds directly to step S69 without performing the processes in steps S63 to S64.

  If the forward swing operation of the work implement operation lever 22 is not detected in step S61, the process proceeds to step S65. In step S65, detection is performed using the first operating tool right marker switch. When a backward swing operation of the work implement operating lever 22 is detected, the process proceeds to step S66, and a backward swing operation of the work implement operating lever 22 is not detected. Proceed to step S69. In step S66, detection by the detection switch 46 is performed, and when a state other than the “right marker swinging posture” of the switching arm 42 is detected, the process proceeds to step S67. In step S67, the switching arm 42 is driven to switch the posture to the “right marker swinging posture”, and the process proceeds to step S68. In step S68, the auto marker flag is set to “automatic ON” and the process proceeds to step S69. When the “right marker swinging posture” of the switching arm 42 is detected in step S66, the process proceeds directly to step S69 without performing the processes in steps S67 to 68.

  As described above, when the marker 8 on the side different from the marker 8 being ejected is ejected by the work implement operation lever 22 in the processing flow of steps S61 to 68, the auto marker flag is set to “automatic ON”, and the left and right markers The change-out switching is performed, and thereafter, automatic marker control is performed in steps S55 to S60.

  In step S69, detection by the automatic switch 19 is performed. If a pressing operation of the automatic switch 19 is detected, the process proceeds to step S70. If a pressing operation of the automatic switch 19 is not detected, the process returns to step S51. In step S70, detection is performed using an auto marker flag, and if "automatic OFF" of the auto marker flag is detected, the process proceeds to step S71, and if "automatic ON" is detected, the process proceeds to step S72.

  In step S71, the auto marker flag is set to “automatic ON”, and the process returns to step S51. In step S72, the switching arm 42 is switched to the “both marker storing position”, and the process proceeds to step S73. In step S73, the auto marker flag is set to “automatic OFF”, and the process returns to step S51.

  As described above, the pressing operation of the automatic switch 19 is detected by the processing flow of steps S69 to S73, and switching is performed as to whether or not the automatic marker ejection control is performed in steps S55 to S60.

  If the “down state” of the planting work machine 7 is detected in step S52, the process proceeds to step S74. In step S74, detection by the double drop operation timer is performed. If it is detected that the double drop operation timer is being counted, the process proceeds to step S75. If the end of the double drop operation timer is detected, the process proceeds to step S51. return.

  In step S75, detection by the first operation tool left marker switch 51 is performed, and when a forward swing operation of the work implement operation lever 22 is detected, the process proceeds to step S76. In step S76, detection by the detection switch 46 is performed, and when a state other than the “left marker swinging posture” of the switching arm 42 is detected, the process proceeds to step S77. In step S77, the switching arm 42 is driven to switch the posture to the “left marker swinging posture”, and the process returns to step S51. In step S76, when the “left marker swinging posture” of the switching arm 42 is detected, the process of step S51 is returned directly without performing the process of step S77.

  If the forward swing operation of the work implement operation lever 22 is not detected in step S75, the process proceeds to step S78. In step S78, detection by the first operating tool right marker switch 52 is performed, and when the backward swing operation of the work implement operating lever 22 is detected, the process proceeds to step S79, and the backward swing operation of the work implement operating lever 22 is not detected. Then, the process returns to step S51.

  In step S79, detection by the detection switch 46 is performed. When a state other than the “right marker swinging posture” of the switching arm 42 is detected, the process proceeds to step S80, and the “right marker swinging posture” of the switching arm 42 is detected. Then, the process returns to step 51. In step S80, the switching arm 42 is driven to switch the posture to the “right marker swinging posture”, and the process returns to step S51.

As described above, according to the processing flow in steps S74 to S80, the work machine operation lever 22 without the predetermined time (T ₁ ) after the descent operation of the planting work machine 7 and the “automatic ON” and “automatic OFF” setting of the auto marker flag. The swing-out operation of the left and right markers 8 and 8 is allowed.

It is a side view of the riding transplanter to which the present invention is applied. It is a top view of the riding transplanter to which the present invention is applied. It is a principal part top view of a front operation panel. (A) is a plan view of the HST lever, (B) is a left side view of the HST lever, (C) is a rear view of the HST lever, and (D) is a right side view of the HST lever. It is a perspective view of a steering handle and a work implement operation lever. It is a side view which shows the raising / lowering control mechanism of a planting work machine. It is a side view which shows the automatic raising / lowering control mechanism by the sensing float of a planting work machine. It is a top view of a marker sticking control mechanism. (A) is a side view of the marker ejection control mechanism in a state where the marker is housed, and (B) is a side view of the marker ejection control mechanism in a state where the marker is ejected. It is a block diagram which shows the control system of a planting work machine. It is a control flow figure of a planting work machine. It is a control flow figure of the planting work machine which shows another Example. It is a forced raising / lowering control flowchart of a planting work machine. It is a marker extraction control flowchart.

7 Planting machine 17 Steering handle 18 HST lever (travel gearshift lever)
22 Work implement operation lever (first operation tool)
24 Second operation tool

Claims (2)

A first operation tool (22) for operating the planting clutch for moving the planting machine (7) up and down to an arbitrary height and turning on and off the power to the planting machine (7), and a single operation The planting work machine (7) is lifted and operated, and the planting clutch is turned off, and the planting machine (7) is lowered and the planting clutch is turned on by another single operation. In the riding transplanter provided with two operating tools (24), the first operating tool (22) is provided in the vicinity of the steering handle (17), and the second operating tool (24) is provided in the travel speed change lever (18). A travel speed change lever (18) is provided in the vicinity of the steering handle (17), and the planting work machine (7) is automatically raised to the non-working position height with respect to the farm field when the second operating tool (24) is raised. And for the field scene during the lowering operation by the second operating tool (24) Is configured to automatically lowered to work position height, by increased operation of the planting work machine (7) according to the first operating member (22), first operating member (22) by planting working machine (7) The lowering operation and the lowering operation of the planting work machine (7) by the second operation tool (24) are canceled, and the first operation is performed by the lowering operation of the planting work machine (7) by the first operation tool (22). While the raising operation of the planting work machine (7) by the tool (22) and the raising operation of the planting work machine (7) by the second operation tool (24) are canceled, the second operation tool (24 ), The riding transplanter configured so that the lifting operation of the planting work machine (7) by the first operating tool (22) is not canceled . The riding transplanter according to claim 1, wherein the second operating tool (24) is configured to be operable only when the power can be turned on and off to the planting work machine (7) by the first operating tool (22). .

Images