JP2008173054A - Transplanter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an operation switch that is less apt to cause misoperations and having proper operability, when installing a lifting and lowering switch for carrying out the lifting and lowering operation of a transplanting implement, and the operation switch enabling on-operation and off-operation of a transplanting clutch for transmitting power to the transplanting implement, in a gripping part of a speed-change lever. <P>SOLUTION: A control means 61 for turning off the transplanting clutch by the operation of a lifting operation switch 51a is installed, automatically lifts the transplanting implement 5 to a prescribed height by the additional operation of the lifting operation switch 51a at the transplanting operation for transplanting seedlings in a field, while enabling the height of the transplanting implement 5 to follow the field, and stopping the lifting or lowering motion of the transplanting implement 5, when the lifting operation switch 51a is operated, under lowering movement of the transplanting implement 5 by the operation of a lowering operation switch 51b. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a transplanter such as a riding type rice transplanter in which a planting machine is connected to a rear part of a machine body so as to be movable up and down.

In the conventional riding type rice transplanter, in order to facilitate the raising / lowering operability of the planting work machine connected to the rear part of the machine body, the raising / lowering switch for performing the raising / lowering operation of the planting work machine and the power to the planting work machine are transmitted. A series of operations ranging from shifting the vehicle speed to raising and lowering the planting work machine and turning on and off the work machine clutch by providing a work switch for turning on and off the work machine clutch on the grip of the shift lever that changes the vehicle speed. Is known that can be quickly performed without changing the gripping hand from the grip portion (see, for example, Patent Document 1).
JP 2002-84836 A (page 3-4, FIGS. 1 to 4)

  And the raising / lowering switch of patent document 1 mentioned above is a raising button which switches a planting work machine to a raise and a raise stop for every pushing operation, and a lowering button which switches a planting work machine to a descent and a descent stop for every pushing operation The lowering button also serves as a work switch for turning on / off the work implement clutch. The pushing operation of the lowering button lowered the planting work machine to a certain work position, that is, the planting work position. At each time, the power transmission to the planting work machine is switched on and off every time the lowering button is pressed, so that the planting work can be executed and stopped.

  In addition to the above-described lowering button, a lowering button dedicated to the lowering operation of the planting work machine is provided in the grip portion of the shift lever, and the lowering button lowers the planting work machine by the pressing operation. Further, the lowering of the planting work machine is stopped by the release of the pushing operation, and the lowering button facilitates delicate adjustment of the planting work start position at the edge of the bush.

  However, the thing of patent document 1 is the raising button which switches a planting work machine to a raise and a stop for every pushing operation in the narrow holding space which comprises the grip part of a transmission lever, and a planting working machine for every pushing operation And a lowering button for switching on / off of power transmission to the planting machine every pushing operation when the planting machine is lowered to the planting work position. There is a lower button dedicated to the lowering operation of the attached work machine, and an operator may misoperate when selectively pressing these three buttons with fingers while holding the grip portion of the shift lever. Therefore, further improvement was desired.

  The present invention aimed at solving the above-mentioned problem is provided with a planting work machine capable of moving up and down at the rear part, and in the transplanting machine for planting seedlings in a field with the height of the planting work machine following the field, A lifting operation switch and a lowering operation switch for raising and lowering the planting work machine are provided in the gripping portion of the speed change operation tool for changing the vehicle speed of the transplanting machine, and the planting work is performed by operating the raising operation switch during the planting work. The planting operation of the machine is stopped, the planting work machine is automatically raised to a predetermined height by further operating the lifting operation switch, and the lifting operation switch is operated during the lowering operation of the planting work machine by operating the lowering operation switch. Then, the control means which stops the raising / lowering operation | movement of the said planting work machine is provided, It is characterized by the above-mentioned.

  The present invention is provided with an ascending operation switch and a descending operation switch for performing an ascending / descending operation of a planting work machine at a grip portion of a shifting operation tool for shifting the vehicle speed of the transplanting machine. These two operation switches can be smoothly selected and turned on with the fingers while gripping the gripping portion, so that erroneous operations are unlikely to occur. Then, during planting work in which the height of the planting machine is made to follow the field and seedlings are planted in the field, the planting operation of the planting machine is stopped by operating the lifting operation switch, and a further lifting operation switch Control means to automatically raise the planting machine to a predetermined height by operation, for example, when the transplanter is a riding rice transplanter, the planting work is stopped by operating the lifting operation switch to turn off the planting clutch In addition, the leveling float provided in the lower part of the planting work machine can be easily leveled on the headland while being grounded on the field scene, and the planting work is completed and the slope is climbed from the mud in the field. Similarly, when the riding type rice transplanter is allowed to escape to the approach path, the ground leveling float can be grounded to the field scene, and the aircraft can be escaped while stabilizing the front-rear balance. In addition, since the planting work machine can be automatically raised to a predetermined height by further operation of the raising operation switch, the workability is excellent. In addition, if the lifting operation switch is operated during the lowering operation of the planting work machine by the operation of the lowering operation switch, the lifting operation of the planting work machine can be stopped. Since the lowering operation of the planting work machine can be stopped by operating the other lifting operation switch, it is difficult to cause an erroneous operation.

  Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a side view of a riding type rice transplanter 1 which is an example of a transplanting machine, and an elevating link mechanism 4 having a hydraulic cylinder 3 as an actuator is provided at a rear portion of a body frame 2 of the riding type rice transplanter 1. A planting work machine 5 as a work machine is connected via the lift link mechanism 4 so as to be able to be lifted and lowered, and a pair of left and right front wheels 6 and a rear wheel 7 are provided at the lower part of the machine body frame 2. Yes.

  A bonnet 8 that covers the engine E and the like is provided at the front portion of the body frame 2, and the power output from the engine is transmitted to the hydraulic continuously variable transmission H (see FIG. 2) and the power in the transmission case T. The transmission device is configured to be branched into a traveling transmission system and a planting transmission system and transmitted to the pair of left and right front wheels 6 and rear wheels 7 and the planting work machine 5. A hydraulic pump (not shown) that is driven by the power of the engine E is provided on one side of the transmission case T. A hydraulic control valve 53 (see FIG. 6), which will be described later, is provided by pressure oil supplied from the hydraulic pump. The expansion / contraction operation of the hydraulic cylinder 3 is controlled via

  In addition, a seat 9 on which an operator is seated is provided above the rear part of the body frame 2, and an operation panel 11 for displaying various monitors is provided in front of the seat 9, and a steering is provided above the operation panel 11. Below the steering wheel 12 and the steering handle 12, a step 14 for forming a floor surface of the control unit 13 is provided.

  More specifically, a link holder 15 is attached to the rear end of the elevating link mechanism 4, and a square pipe-shaped planting that supports the planting work machine 5 in a rolling manner on a rolling shaft (not shown) provided in the link holder 15. Attached frame 16 is provided horizontally. A pair of left and right seedling stage support frames 17 erected on the planting frame 16 support the seedling stage 18 so as to be able to reciprocate left and right in a front and rear low-tilt posture.

  A plurality of planting transmission cases 19 are attached to the rear lower part of the planting frame 16 at a predetermined interval, and a chain transmission mechanism (not shown) and planting driving are installed in the planting transmission case 19. A pair of left and right transplanting rods 22 provided at both end portions of a planting device (rotary case) 21 assembled to the rear end portion of the planting transmission case 19 are rotationally driven via a shaft or the like. That is, the planting device 21 is equipped with a planetary gear mechanism (not shown) that can rotate the transplantation cage 22 along a predetermined locus along with its own rotation. One seedling is scraped from the mat mat seedlings placed side by side and can be continuously transplanted to the field.

  Further, below the planting transmission case 19, a center float 23 (see FIG. 9) that acts as a hydraulic pressure sensing float that controls the planting work machine 5 to a desired height and also serves as a leveling float for leveling a farm scene. And a side float 24 that is a leveling float that removes the wheel marks of the left and right front wheels 6 and the rear wheels 7 to level the field, and the lower surfaces of the center float 23 and the side float 24 are in contact with the field scene. After the planting work machine 5 is lowered to the state of sliding, the transplanting work can be performed while the machine is running.

  In the space S between the rear wheel 7 and the center float and the side float 24 described above, that is, in front of the planting work machine 5, a plurality of leveling rotors 25 are attached to the rotor shaft 26 over substantially the entire width of the planting work machine 5. A supported leveling device 27 is disposed, and the ground leveling rotor is driven to rotate in a state where the leveling rotor is in contact with the field scene. It is possible to level the farm scene.

  Further, as shown in FIGS. 1 and 2, a main transmission lever 31 is provided through the lever guide 32 on the left side of the operation panel 11, and a transmission case T is disposed below the main transmission lever 31. Yes. A hydraulic continuously variable transmission H is attached to the left side surface of the transmission case T, and the traveling speed of the airframe is the main transmission by the hydraulic continuously variable transmission H and the auxiliary transmission configured in the transmission case T. It is determined by sub-shifting by gear switching (sub-transmission mechanism).

  More specifically, a main shift lever potentiometer 33 for detecting a shift operation position from the forward side to the reverse side of the main shift lever 31 is provided at a base end portion of the main shift lever 31, and the main shift lever potentiometer 33 is provided. In order to operate the operating arm 34 of the hydraulic continuously variable transmission H in conjunction with the detection result of the shifting operation position of the main transmission lever 31 by the rod, the rod of the electric cylinder 36 is connected to the operating arm 34 via the rod 35. While connecting the side 36a, the motor unit side 36b of the electric cylinder 36 is supported by the mounting member 37 of the lever guide 32 described above.

  Then, as shown in FIG. 3, the transmission operation of the hydraulic continuously variable transmission H is performed by swinging the main transmission lever 31 back and forth and right and left along the guide groove 32 a formed in the lever guide 32. Can be done. That is, the main transmission lever 31 operates the hydraulic continuously variable transmission H to the forward side to increase the forward speed by operating the hydraulic continuously variable transmission H forward from the neutral position where the hydraulic continuously variable transmission H is neutral. On the other hand, by operating the main transmission lever 31 backward from the neutral position, the hydraulic continuously variable transmission H is operated backward to increase the reverse speed.

  Therefore, the guide groove 32a formed in the lever guide 32 moves the forward operation region F and the reverse operation region R of the guide groove 32a to the left and right so that the forward movement and the backward operation of the machine body by the main transmission lever 31 are not continuous operations. The operation areas F and R are connected by a neutral area N while being offset in the direction. The main transmission lever 31 can be swung left and right along the lever guide 32 while the hydraulic continuously variable transmission H is kept in the neutral state in the neutral region N.

  Further, on the right side of the operation panel 11, there is a sub-transmission lever 38 for switching the sub-transmission mechanism configured in the transmission case T, and the rotational speed of the engine E on the outer side substantially parallel to the sub-transmission lever 38. A throttle lever 39 for adjusting the angle is provided through a lever guide 41.

  As shown in FIG. 4, the throttle lever 39 is pivotally supported below the operation panel 11 so as to be able to swing back and forth, and at the base end thereof, the engine speed by the throttle lever 39 is low. A throttle lever potentiometer 42 is provided to detect the adjustment position of the high rotation range. Based on the detection result of the engine rotation speed adjustment position of the throttle lever 39 by the throttle lever potentiometer 42, the engine is connected via the engine control wire 43. In order to operate the E speed adjusting arm 44, a throttle motor (electric motor) 45 is disposed below the throttle lever 39, and a sector gear 46 that meshes with a pinion gear 45a fixed to the output shaft of the throttle motor 45 is provided. Provided on one side of the sector gear 46. While connecting the one end of the control wire 43 is connected to the distal end portion of the other end of the governor arm 44 of the wire 43. Reference numeral 47 in the drawing denotes a throttle potentiometer that detects the rotation angle of the sector gear 46 instead of the rotation angle of the speed control arm 44.

  In addition, the main speed change lever 31 that is a speed change operating tool for changing the vehicle speed is disposed on the left side of the operation panel 11 in this embodiment, and can be changed while holding the grip portion 31a with the left hand. Then, on the operation panel 11 side (the center of the machine body) of the grip portion 31a, as shown in FIGS. 3 and 5, the lifting operation of the planting work machine 5 and the planting are performed by the ON operation with the thumb of the left hand. A raising operation switch 51a and a lowering operation switch 51b that can perform an on / off operation of a planting clutch (not shown) that transmits power to the work machine 5 are provided up and down, and a left hand is provided on the front side of the grip portion 31a. Left and right marker switches 52a and 52b are provided for selecting an automatic swing start order of a pair of left and right drawing markers 71L and 71R (see FIG. 8) provided at the left and right ends of the planting frame 16 by an ON operation other than the thumb.

  In addition, as shown in FIG. 6, in the vicinity of the hydraulic control valve 53 that controls the expansion / contraction operation of the hydraulic cylinder 3 that raises and lowers the planting work machine 5, the above-described raising operation switch 51a or lowering operation switch 51b is turned on. A lifter cam motor 54 that is rotationally driven is disposed. A pinion gear 54a fixed to the output shaft of the lifter cam motor 54 and a sector gear 55a formed on one side of the lifter cam 55 are engaged with each other, and The lifter cam 55 is provided with a first cam portion that engages with the engagement pin of the valve operation plate, and the lifter cam 55 is centered on the sleeve shaft 56 in a state where the first cam portion is engaged with the engagement pin of the valve operation plate. By configuring the lifter cam 55 to rotate, the lifter cam 55 is raised, fixed, and automatic (in accordance with the rotational drive of the lifter cam motor 54). It is configured so as to be controlled to move 4 positions later) planting. Then, the hydraulic control valve 53 is raised, fixed, and automatically controlled by rotating the lifter cam 55 to each position, and the raising operation switch 51a or the lowering operation switch 51b is turned on at the lowering position of the hydraulic control valve 53. The planting clutch can be turned on and off by operation.

  The riding rice transplanter 1 is shown in FIG. 7 as a control means for controlling the automatic swing start sequence of the pair of left and right drawing markers 71L and 71R and the hydraulic control valve 53 to be raised, fixed and automatically positioned. A control unit 61 as shown in the block diagram is provided. The control unit 61 includes a CPU, a ROM, a RAM, and the like. Various sensors and switches connected to the input side of the control unit 61 and an output device connected to the output side will be described below. .

  On the input side of the control unit 61, the planting work machine 5 is moved up and down by the ON operation of the above-described raising operation switch 51 a or the lowering operation switch 51 b, and a planting clutch that transmits power to the planting work machine 5 is turned on and off. A work machine preparation switch 62 that enables operation, a marker automatic switch 63 that enables automatic drawing of both the drawing markers 71L and 71R, as well as a lighting type marker automatic monitor for the pair of left and right drawing markers 71L and 71R, A lifter switch 51a and a lifter switch 51b, which are work machine operation switches for raising and lowering the attached work machine 5, and a lifter (work machine operation) cam potentiometer 64 for detecting the rotation angle of the lifter cam 55 are provided via a predetermined input interface circuit. Connected.

  Furthermore, as shown in FIG. 8, the marker automatic switch 63 is turned on for the pair of left and right drawing markers 71L and 71R provided at the left and right ends of the planting frame 16 to form the next planting process index in the field scene. In this state, when the left and right marker switches 52a and 52b are turned on, the marker motor 74 on the side of the machine body frame 2 is driven to rotate in either the left or right direction, whereby the posture of the marker switching arm 75 with the marker motor shaft 74a as a support shaft The left and right rods 76L and 76R linked to the switching arm 75, the lock arms 77L and 77R, the marker operation arms 78L and 78R, the wires 79L and 79R, and the like are selectively operated and controlled. At this time, the posture position of the switching arm 75 is set in three stages ( Marker lock detection switch 81 for detecting the neutral-right) also is connected to the input side of the control unit 61.

  On the other hand, on the output side of the control unit 61, a lifter (working machine operation) cam motor 54 that rotates based on the ON operation of the ascending operation switch 51a or the descending operation switch 51b and the left and right marker switches 52a and 52b are turned on. A marker motor 74 that is rotationally driven on the basis thereof is connected via a predetermined output interface circuit.

  A plate-like base 83 extends rearward from a mounting bracket 82 of the hydraulic control valve 53 provided on one side of the body frame 2 below the seat 9, and the lifter cam motor 54 and the base 83 are connected to the base 83. As shown in FIG. 9, a sensing wire motor 87 that adjusts the amount of the center float 23 (float sensitivity adjusting wire 86) is attached in conjunction with a change in the setting of the hydraulic sensitivity adjusting dial 85, and the sensing wire motor 87 is mounted. A sector gear 89 that meshes with a pinion gear 88 included in the shaft is pivotally attached. Further, pins 91 and 92 are fixed at both ends in the rotational direction of the sector gear 89, and the hydraulic pressure control valve interlocking wire 93, the linkage link 94, the return spring 95 and the like are connected from the rear pin 91 to the hydraulic pressure. The hydraulic pressure sensing mechanism D is formed by connecting to the operating arm 96 of the control valve 53 and connecting to the center float 23 from the front pin 92 via the float sensitivity adjusting wire 86, the sensing plate 97 and the like.

  More specifically, in the automatic position of the hydraulic control valve 53 described above, the hydraulic control valve 53 is operated by operating the hydraulic control valve 53 in conjunction with the hydraulic float sensing mechanism D on the center float 23 that swings following the field. In order to keep the posture constant, the planting work machine 5 is configured to move up and down. That is, if the hydraulic control valve 53 is in the automatic position and the center float 23 is not in contact with the field, the front portion of the center float 23 swings downward and the planting work machine 5 is lowered. In order to lower the planting work machine 5 from the grounded state, the lowering operation at the automatic position of the hydraulic control valve 53 is used.

  Next, the raising / lowering (operation) control of the planting work machine 5 by the control part 61 mentioned above is demonstrated based on the flowchart shown in FIG.

  First, in step S1, if the lowering operation (lower side) switch 51b is ON (lowered), the process proceeds to step S13. If not, the process proceeds to step S2.

  In step S2, if the ascending operation (upper side) switch 51a is operated (up), the process proceeds to step S6, and if not operated, the process proceeds to step S3.

  In step S3, it is determined from the amount of operation per unit time of the lifter cam potentiometer 64 whether or not the planting clutch is waiting to be engaged. If it is in the waiting state, the process proceeds to step S4. Return to S1.

  In step S4, it is similarly determined by the lifter cam potentiometer 64 whether or not the planting work machine 5 has stopped the lowering operation. If the lowering operation is stopped, the process proceeds to step S5, and if it is lowering, the process returns to step S1.

  In step S5, the lifter cam 55 is rotated by the lifter cam motor 54 to the planting position, and the process returns to step S1.

  In step S6, it is determined by the lifter cam potentiometer 64 whether or not the planting work machine 5 is in the raised state, that is, the lifter cam 55 (hydraulic control valve 53) is in the raised (upward) position. Returning to S1, if it is other than the raised position, the process proceeds to step S7.

  In step S7, it is determined by the lifter cam potentiometer 64 whether or not the planting work machine 5 is in the fixed state, that is, the lifter cam 55 is in the fixed position. If it is in the fixed position, the process proceeds to step S8. Proceed to S9.

  In step S8, the lifter cam 55 is rotated to the lifted (lifted) position by the lifter cam motor 54, and the process returns to step S1.

  In step S9, it is determined by the lift cam potentiometer 64 whether or not the planting work machine 5 is in the automatic (lowering) state or the planting work state. If the lifter cam 55 is in the automatic position, the process proceeds to step S10. If YES, the process proceeds to step S12.

  In step S10, it is determined by the lift angle potentiometer (not shown) attached to the lift link mechanism 4 whether or not the planting work machine 5 has stopped the lowering operation. If the lowering operation has been stopped, the process proceeds to step S8. If the lowering operation is not stopped, the process proceeds to step S11.

  In step S11, the lifter cam 55 is rotated to the fixed position by the lifter cam motor 54, and the process returns to step S1.

  Then, in step S12, the lifter cam 55 is lowered by the lifter cam motor 54 and automatically rotated, and the process returns to step S1.

  On the other hand, in step S13, it is determined whether or not the work implement preparation switch 62 enabling the on / off operation of the planting clutch for transmitting power to the planting work implement 5 is OFF or ON. If it is ON, the process proceeds to step S18.

  In step S14, it is determined by the lifter cam potentiometer 64 whether or not the planting work machine 5 is in the raised state, that is, the lifter cam 55 (hydraulic control valve 53) is in the raised position. If it is in the raised position, the process proceeds to step S17.

  In step S15, it is determined by the lifter cam potentiometer 64 whether the planting work machine 5 is fixed, that is, the position of the lifter cam 55 is in the fixed position. If it is in the fixed position, the process proceeds to step S16. Return to step S1.

  In step S16, the lifter cam 55 is automatically rotated by the lifter cam motor 54, and the process returns to step S1.

  In step S17, the lifter cam 55 is rotated to the fixed position by the lifter cam motor 54, and the process returns to step S1.

  In step S18, it is determined by the lifter cam potentiometer 64 whether or not the planting work machine 5 is raised, that is, the lifter cam 55 (hydraulic control valve 53) is in the raised (upward) position. If it is other than the raised position, the process proceeds to step S19.

  In step S19, it is determined by the lift cam potentiometer 61 whether or not the planting work machine 5 is in the automatic (downward) state. If the lifter cam 55 is in the automatic position, the process proceeds to step S20. Proceed to

  In step S20, it is determined by the lift cam potentiometer 61 whether or not the planting work machine 5 has stopped the lowering operation. If the lowering operation has not been stopped, the process proceeds to step S21. If the lowering operation has not been stopped, step S22 is performed. Proceed to

  In step S21, the process returns to step S1 while waiting for the planting clutch to be engaged. In step S22, the lifter cam 55 is rotated to the planting position by the lifter cam motor 54, and the process returns to step S1.

  In step S23, the lifter cam potentiometer 64 determines whether the planting work machine 5 is in the planting work state or the planting work machine 5 is fixed, that is, whether the lifter cam 55 is in the fixed position. If it is in the attached work state, the process returns to step S1, and if the lifter cam 55 is in the fixed position, the process proceeds to step S24.

  In step S24, the lifter cam motor 54 rotates the lifter cam 55 to the automatic position and the control returns to step S1.

  As described above, according to the present invention, the raising and lowering of the planting work machine 5 connected to the grip part 31a of the main transmission lever 31 which is a transmission operation tool for changing the vehicle speed of the riding type rice transplanter 1 so as to be movable up and down at the rear part of the machine body. An up operation switch 51a and a down operation switch 51b for performing the operation are provided above and below, and the planting clutch is engaged by pressing both operation switches 51a and 51b in the automatic lifting state in which the planting work machine 5 follows the field. The operator of the riding type rice transplanter 1 can select the two operation switches 51a and 51b smoothly with a finger while holding the grip portion 31a of the main transmission lever 31, and can be turned on. This makes it difficult to perform erroneous operations.

  And in the automatic raising / lowering state of the planting work machine 5 that causes the height of the planting work machine 5 to follow the field, when the planting clutch is engaged, that is, the height of the planting work machine 5 follows the field. When planting seedlings in the field, the planting clutch is disengaged by one ON operation of the raising operation switch 51a, and the planting work machine 5 is automatically raised to a predetermined height by one operation of the further raising operation switch 51a. For example, when the transplanter is a riding type rice transplanter 1, the planting operation is stopped by turning off the planting clutch by one ON operation of the ascending operation switch 51a. The ground level floats 23 and 24 provided in the lower part of the work machine 5 can be easily leveled on the headland while being grounded on the field scene, and the planting operation is completed and the climbing slope approaches from the mud in the field. Ride type rice transplanter 1 In time of escape also, the front and rear balance of the body can escape while stabilized by grounding similarly ground leveling float 23 and 24 in the field plane. Moreover, since the planting work machine 5 can be automatically raised to a predetermined height quickly by further turning on the raising operation switch 51a, the workability is excellent. When the planting work machine 5 is in a grounded state or in a state where the ascending and descending operations are stopped, the planting clutch is engaged and controlled through the control means 61 by a single ON operation of the descending operation switch 51a. Can be done.

  Further, when the raising operation switch 51a is turned on during the lowering operation of the planting work machine 5 by turning on the lowering operation switch 51b, the lowering operation of the planting work machine 5 can be stopped and the raising operation switch 51a can be stopped. When the lowering operation switch 51b is turned ON during the raising operation of the planting work machine 5 by the ON operation, the raising operation of the planting work machine 5 can be stopped. While the raising operation switch 51a and the lowering operation switch 51b to be lowered are turned on, the raising or lowering operation of the planting work machine 5 is stopped by turning on the other operation switch (which causes the opposite operation to be performed). Because it is possible, it is difficult to cause an erroneous operation. Furthermore, when the body is turned on a headland or the like in the field, the planting work machine 5 can be moved up and down to an arbitrary height quickly and without an erroneous operation by turning the both operation switches 51a and 51b twice continuously. The planting start position can be easily aligned with the already planted ridge after the aircraft is turned on the ground.

  The above-described ascending operation switch 51a and descending operation switch 51b that can perform the raising / lowering operation of the planting work machine 5 and the on / off operation of the planting clutch that transmits power to the planting work machine 5 are shown in FIG. As shown in FIG. 11, it is not necessary to be provided on one side surface of the grip portion 31 a of the main transmission lever 31, and as shown in FIG. 11, the ascent operation switch 51 a is connected to the operation panel 11 side (the body center side) of the grip portion 31 a. ), The lowering operation switch 51b may be provided separately on the back side (operator side) of the grip portion 31a to prevent erroneous operation.

  Next, the swing control of the pair of left and right drawing markers 71L and 71R by the control unit 61 described above will be described based on the flowchart shown in FIG.

  First, in step S1, it is determined whether or not the work implement preparation switch 62 that enables the on / off operation of the planting clutch that transmits power to the planting work machine 5 is turned on. The process proceeds to step S2, and if the ON operation is not performed, the process returns to the original (step S1).

  In step S2, it is determined by the lift angle potentiometer whether or not the planting work machine 5 is in the descending operation. If it is in the descending operation, the process proceeds to step S3, and if not, the process proceeds to step S10.

  In step S3, it is determined whether or not there is a remaining time for both falling timers of the left and right drawing markers 71L and 71R. If there is a remaining time, the process proceeds to step S4, and if there is no remaining time, the process returns to step S1.

  In step S4, it is determined whether or not the left drawing marker 71L has been shaken by the left marker switch 52b. If no shake operation has been performed, the process proceeds to step S5. If the shake operation has been performed, step S5 is performed. Proceed to S8.

  In Step S5, it is determined whether or not the right drawing marker 71R has been shaken by the right marker switch 52a. If no shake operation has been performed, the process returns to Step S1. If the shake operation has been performed, Step S5 is performed. Proceed to S6.

  In step S6, it is determined from the input from the marker lock detection switch 81 whether or not the drawing mode of the drawing marker is a mode other than right swinging. If it is in the right swinging mode, the process returns to step S1 and right swinging is performed. If the mode is other than the above, the process proceeds to step S7.

  In step S7, the drawing mode of the drawing marker is set to the right shaking mode, and the process returns to step S1.

  Then, in S8, it is determined by the input from the marker lock detection switch 81 whether or not the drawing mode of the drawing marker is a mode other than the left swinging mode. If the mode is other than the swing-out mode, the process proceeds to step S9.

  In step S9, the drawing marker swing mode is set to the left swing mode, and the flow returns to step S1.

  In step S10, a double drop timer is set and the process proceeds to step S11. In this step S11, it is determined by the lifter cam potentiometer 64 whether or not the planting work machine 5 is in the highest position. If not, the process returns to step S1, and if it is at the highest position, the process proceeds to step S12.

  In step S12, it is determined whether or not the marker mode is set to automatic by the input of the marker automatic switch 63 that enables automatic drawing of the left and right drawing markers 71L and 71R. If the marker mode is set to automatic, step S13 is executed. If it is not set to automatic, the process proceeds to step S17.

  In step S13, it is determined whether the planting clutch flag is ON or OFF. If ON, the process proceeds to step S14, and if OFF, the process proceeds to step S17.

  In step S14, it is determined whether the drawing mode of the drawing marker has been reset. If it has been reset, the process proceeds to step S15. If one of the drawing modes has not been reset, the process proceeds to step S16. move on.

  In step S15, the drawing marker ejection mode is set to the right ejection mode and the process proceeds to step S17. In step S16, the marker mode ejection direction is reversed and the process proceeds to step S17.

  In step S17, the planting clutch flag is reset and the process proceeds to step S18.

  In step S18, it is determined whether or not the left marker 71L has been shaken by the left marker switch 52b. If the shake operation has not been performed, the process proceeds to step S19. If the shake operation has been performed, step S19 is performed. Proceed to S23.

  In step S19, it is determined whether or not the right drawing marker 71R is shaken out by the right marker switch 52a. If the swinging operation is not performed, the process proceeds to step S26, and if the swinging operation is performed, the step is performed. Proceed to S20.

  In step S20, it is determined whether or not the drawing marker swing mode is a mode other than the right swing mode. If it is in the right swing mode, the process proceeds to step S26, and if it is in a mode other than the right swing mode. Proceed to step S21.

  In step S21, the drawing marker drawing mode is set to the right drawing mode, and the process proceeds to step S22.

  In step S22, the auto marker flag (automatic) is set to ON, and the process proceeds to step S26.

  In step S23, it is determined whether or not the drawing mode of the drawing marker is a mode other than the left swing mode. If the mode is the left swing mode, the process proceeds to step S26, and the mode other than the left swing mode is set. In this case, the process proceeds to step S24.

  In step S24, the drawing mode of the drawing marker is set to the left shaking mode, and the process proceeds to step S25.

  In step S25, the auto marker flag (automatic) is set to ON, and the process proceeds to step S26.

  In step S26, it is determined whether or not the marker automatic switch 63 that enables automatic drawing of the left and right drawing markers 71L and 71R is operated. If no operation is performed, the process returns to step S1 and the operation is performed. If so, the process proceeds to step S27.

  In step S27, it is determined whether or not the auto marker flag (automatic) is ON. If it is ON, the process proceeds to step S28, and if it is not ON, the process proceeds to step S30.

  In step S28, the drawing marker ejection mode is reset and the process proceeds to step S29. In step S29, the auto marker flag (automatic) is turned off and the process returns to step S1.

  In step S30, the auto marker flag (automatic) is set to ON and control is returned to step S1.

  In addition, the apparatus structure and control structure of this invention can be utilized for mobile farming machines, such as seedling transplanting machines other than the riding type rice transplanter 1, a fertilizer seeding machine, various management work machines with which a tractor is mounted, or a combine.

The side view of a riding type rice transplanter. The side view which shows the linkage structure of the main transmission lever. The top view of an operation panel. The side view which shows the linkage structure of a throttle lever, and a partially abbreviated top view of an engine. The side view (a) and front view (b) which show the structure of the holding part of the main transmission lever. The side view which shows the structure of a hydraulic-sensing control valve periphery. The block diagram of a control part. The front view which shows the structure of a marker action | operation control mechanism. The side view which shows the structure of a hydraulic-pressure detection control mechanism. The flowchart which shows the raising / lowering control of a planting work machine. The rear view (a), side view (b), and front view (c) which show the structure of the holding part of a main speed-change lever. The flowchart which shows the drawing-out control of a drawing marker.

Explanation of symbols

Reference Signs List 5 Work implement 31 Shifting operation tool 31a Grasping part 51a Lifting operation switch 51b Lowering operation switch 61 Control means

Claims (1)

  The transplanting machine (5) that can be moved up and down at the rear, and the planting machine (5) that follows the height of the planting machine to plant seedlings in the field, a gear that changes the vehicle speed of the transplanting machine. A raising operation switch (51a) and a lowering operation switch (51b) for raising and lowering the planting work machine (5) are provided in the grip portion (31a) of the operation tool (31), and the raising operation switch is operated during planting work. The planting operation of the planting work machine (5) is stopped by the operation of the switch (51a), and the planting work machine (5) is automatically raised to a predetermined height by the operation of the further raising operation switch (51a) and then lowered. When the raising operation switch (51a) is operated during the lowering operation of the planting work machine (5) by the operation of the operation switch (51b), the control means (61) for stopping the lifting operation of the planting work machine (5) is stopped. Transplanter characterized by being provided

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