JP2006061074A - Automatic stop regulating means of transplanter equipped with planting automatic stop means - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an automatic stop regulating means for causing no automatic stop of a seedling-carrying platform and a planting part unexpected by an operator during planting operation in a transplanter equipped with a planting automatic stop means. <P>SOLUTION: The automatic stop regulating means for regulating operation of the planting automatic stop means is installed. The automatic stop regulating means regulates the operation of the planting automatic stop means by detecting the instruction to start the operation of the planting automatic stop means with an operating part for operating the start of the operation of the planting automatic stop means for automatically disengaging and operating a planting clutch 33 for transmitting drive force to a planting part 21 and to a reciprocating mechanism of the seedling-carrying platform 17 so that the drive force is freely engaged and disengaged or the start of the operation of the automatic stop means at the right and left movement terminal ends of the seedling-carrying platform 17 is detected during the continuation of planting operation. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an automatic stop regulating means for a transplanter provided with an automatic planting stop means.

  Conventionally, a seedling platform on which mat seedlings for planting are mounted and reciprocated to the left and right, a planting part (planter arm) for scraping seedlings from the seedling platform and planting them in a field, a planting unit and seedlings 2. Description of the Related Art A transplanter (riding rice transplanter) including a planting machine having a planting clutch that transmits a driving force to a reciprocating mechanism of a table and transmits the driving force freely is known (see, for example, Patent Document 1). The names in parentheses are names corresponding to those in Patent Document 1.

The riding rice transplanter includes an automatic planting stop means for automatically disengaging the planting clutch at the left and right end of the seedling platform, and an operation unit (left shift switch) for operating the planting automatic stop means. And are provided. As a result, the seedling platform can be stopped at the left and right reciprocating ends, and the operation of the planting unit can be stopped, and when starting the planting operation after the mat seedling is supplied to the seedling platform, Planting work can be performed from the seedlings at the end, and inconveniences such as bending and tilting of the mat seedlings and remaining seedlings due to the planting work performed from the seedlings in the middle of the mat seedlings can be prevented.
JP 2002-125424 A

  However, even if the operation unit is operated by mistake to operate the automatic planting stop means while the planting operation is continued, or even if the start of the automatic stop means is detected due to various faults, the automatic stop regulating means The operation of the automatic planting stopping means unexpected by the person is started, the seedling stand is stopped at the end of the left and right movement, and the operation of the planting part is stopped, so that the seedling is not planted in the field There were drawbacks such as generation of parts.

  In order to solve the above problems, the automatic stop regulating means of the transplanting machine provided with the automatic planting stopping means of the present invention includes a seedling mounting base 17 on which mat seedlings for planting are mounted and reciprocated left and right, Planting 21 having a planting portion 21 for scraping seedlings from the seedling mount 17 and planting them in a field, and a planting clutch 33 for transmitting a driving force to the reciprocating mechanism of the planting portion 21 and the seedling mount 17 and transmitting the driving force freely. The working machine 8 is provided, and an automatic planting stopping means for automatically cutting and operating the planting clutch 33 at the left and right end of the seedling stage 17 and an operation unit for operating the planting automatic stop means are provided. In the transplanter, automatic stop regulating means for regulating the operation of the automatic planting stopping means by detecting the operation start instruction of the automatic planting stopping means by the operation unit or the start of the automatic stopping means during the planting operation. Planting automatic stop with Further comprising a stage has a first feature.

  Also, the operation of the automatic planting stop means is performed by operating the operation unit different from the operation of operating the planting clutch 33 at the start of the planting operation by using the operation tools 10 and 12 provided on the transplanter side. The second feature is to start.

  According to the structure of the present invention configured as described above, after starting the planting operation, the automatic stop means is operated when the mat seedling is supplied to the seedling mounting table, so that the seedling mounting table is moved at the left and right moving ends. The operation of the planting part can be stopped while stopping. Thereby, when the planting operation is started after the mat seedling supply is completed, the planting operation can be performed from the seedling at the end of the mat seedling. Thereby, inconveniences such as bending and tilting of the mat seedling and remaining seedling due to the planting operation from the seedling in the middle of the mat seedling can be prevented.

  While the planting operation is continuing, the operation of the planting automatic stop unit is regulated by the automatic stop regulation unit when the operation instruction of the planting automatic stop unit or the operation start of the automatic stop unit is detected by the operation unit. That is, during the planting operation, the operation stop of the seedling table and the planting unit based on the planting automatic stopping means is restricted.

  If the operation of the seedling platform and the planting part is stopped by the automatic planting stop means during the planting operation, there will be a part where seedlings are not planted in the field. The operation of the automatic planting stop means is considered to be an erroneous operation or failure of the operation unit, or a malfunction or failure of the automatic stop means side. For this reason, while the planting operation is continued by the above-mentioned regulating means, the operation stop of the seedling platform and the planting part based on the automatic planting stopping means is regulated, so that there is a portion where seedling is not planted in the field. Inconveniences such as occurrence can be prevented.

  On the other hand, the operation unit provided on the transplanter side is also used as an operation unit, and the operation of the automatic planting stop means is started by operation of the operation unit different from the operation of operating the planting clutch at the start of planting work. By doing so, it is not necessary to provide an operation part for starting the operation of the automatic planting stopping means, and the cost can be reduced. Further, since the operation of the automatic planting stop means is started by an operation of the operation unit different from the operation of operating the planting clutch, it is possible to prevent an erroneous operation of the operation start operation of the automatic planting stop means.

  FIG. 1 is a side view of a riding rice transplanter that is a mobile agricultural machine employing the present invention. The traveling machine body 1 is provided with front and rear wheels 2 and 3. A driver's seat 6 is provided behind the hood 4 in the traveling machine body 1. A planting work machine 8 is connected to the rear of the traveling machine body 1 via a lifting link mechanism 7 having an upper link and a lower link. The lifting link mechanism 7 is lifted and lowered by expansion and contraction of the hydraulic cylinder. The planting machine 7 is moved up and down by expansion and contraction of the hydraulic cylinder.

  As shown in FIG. 2, an operation panel 9 is provided in front of the driver seat 5. A raising / lowering operation lever 12 protruding from one side (right side in the present embodiment) of the operation panel 9 from the steering column 11 is provided. An operator (operator) of the riding rice transplanter can perform a lifting operation or the like of the planting work machine 8 by swinging the lifting operation lever 12 in the vertical direction.

  The passenger rice transplanter is configured so that various alarms are notified. For this reason, an alarm stop switch 10 for stopping alarm notification is provided in the operation panel 9. There is also provided a planting switch 15 which enters (ON) during planting operation.

  As shown in FIG. 3, the planting work machine 8 has a work machine frame 16 including a horizontal frame 13 in the left-right direction and a vertical frame 14 in the vertical direction. On the work machine frame 16 side, a seedling platform 17 on which a seedling for planting (mat seedling) is placed is attached. An upper side of the seedling mount 17 is supported on the upper end side of the vertical frame 14 so as to be slidable left and right. A lower portion of the seedling table 17 is supported by an apron 18 so as to be slidable to the left and right with respect to the work machine frame 16.

  As shown in FIG. 4, a plurality of planter cases 19 are attached to the horizontal frame 13. On both the left and right sides of each planter case 19, planting portions 21 for scraping seedlings from mat seedlings placed on the seedling placing stand 17 and planting them in a farm field are rotatably provided. A float 22 is attached to the lower side of each planter case 19 so as to be supported on the work machine frame 16 side.

  As shown in FIG. 4, an input case 23 to which driving force is input from the PTO shaft of the traveling machine body 1 is attached to the work machine frame 16 side. A drive shaft 24 protrudes from the input case 23 to the left and right. The drive shaft 24 is connected to each planter case 19. A driving force is input to each planter case 19 via a driving shaft 24, and the planting portion 22 is rotationally driven by the driving force.

  A lateral feed transmission 26 to which driving force is input from the driving shaft 24 is provided outside the planter case 19 located on the right outer side. A driving force is transmitted from the lateral feed transmission 26 to the lateral feed screw shaft 28 of the lateral feed device 27 that reciprocally moves the seedling platform 17 in the left-right direction. The seedling stage 17 is driven to reciprocate left and right by the lateral feed screw shaft 28.

  As shown in FIG. 5, an auxiliary transmission mechanism 31 is provided in the rear transmission 29 that drives the rear wheel 3 of the traveling machine body 1. The rear wheel 3 is shifted and driven via the auxiliary transmission mechanism 31. Further, a PTO shaft 32 that outputs a driving force for the planting work machine protrudes from the rear transmission 29. A driving force is transmitted to the PTO shaft 32 through a planting clutch 33 so as to be freely turned on and off.

  In the vicinity of the planting clutch 33, an operation shaft 34 for operating the planting clutch 33 is provided. The PTO shaft 32 and the input shaft 36 of the input case 23 are connected by a connecting shaft 37.

  When the planting clutch 33 is engaged and operated by the above-described structure, a driving force is input to the input case 23 of the planting work machine 8, the planting unit 21 is rotationally driven, and the seedling placing table 17 is driven to reciprocate left and right. Done. When the planting clutch 33 is turned off and operated, both the rotation of the planting unit 21 and the left and right reciprocation of the seedling placing table 17 are stopped.

  As described above, the planting work machine 8 is lowered so that the float 22 contacts the field by the operation of the lifting operation lever 12, the planting clutch 33 is engaged and actuated to drive the planting unit 21, and the seedling platform. 17 is reciprocated left and right, and the traveling machine body 1 is caused to travel in the field, so that the planting part 21 scrapes off the seedling from the seedling platform 17 that reciprocates left and right as the traveling machine body 1 travels, and is planted in the field. Work is done.

  The planting machine 8 is provided with a scraping adjustment lever 38 connected to the apron 17. By operating the scraping adjustment lever 38 up and down, the apron 17 moves up and down, and the seedling stage 17 moves up and down. Thereby, the positional relationship between the planting unit 21 and the seedling stage 17 is changed, the amount of seedling scraping by the planting unit 21 is adjusted, and the number of seedlings to be planted is adjusted.

  As shown in FIG. 6, a support stay 39 is attached to the upper end side of the vertical frame 14 in the left-right direction. On the other hand, a slide rail 41 in the left-right direction is integrally fixed at a position near the support stay 39 on the seedling stage 17. The vertical frame 14 is provided with a slide piece 42 that moves up and down together with the apron 18 so as to be vertically slidable.

  An upper end portion of the slide piece 42 is inserted into the slide rail 41 so as to be slidable left and right. With the above structure, the upper side of the seedling placing stand 17 is supported on the upper end side of the vertical frame 14 through the slide piece 42 so as to be slidable in the left and right directions.

  A seedling stage reciprocating end detection sensor 44 for detecting that the seedling stage 17 is located at the left or right movement end of the reciprocating movement is attached to the support stay 39 via a bracket 43. The seedling table reciprocating end detection sensor 44 is U-shaped in a side view and is open at the top. The seedling table reciprocating end detection sensor 44 has a structure having a light transmitting portion on one side of the U-shape facing each other and a light receiving portion on the other side, and is turned on (entered) by blocking between the two. Since the vertical frame 14 does not move up and down together with the apron 18, the position of the support stay 39 is fixed even when the seedling table 17 is moved up and down, and the height position of the seedling table reciprocating end detection sensor 44 is also fixed. It is fixed.

  On the other hand, on the slide rail 41 side, when the seedling stage 17 is located at the left end of the reciprocating movement, the seedling stage reciprocating end detection sensor 44 is inserted from the side between the U-shaped of the seedling stage reciprocating end detection sensor 44. When the left end detection plate 46L to be turned on (ON) and the seedling stand 17 are positioned at the right end of the reciprocating movement, the left end detection plate 46L is inserted between the U-shapes of the seedling stand reciprocating end detection sensor 44 from the side. A right end detection plate 46R for entering (ON) the reciprocating end detection sensor 44 is provided. The bracket 43 is formed with a slit that matches the U-shape of the seedling table reciprocating end detection sensor 44 so that the left and right end detection plates 46L and 46R can pass therethrough.

  As described above, the left end detection plate 46L, the right end detection plate 46R, and the seedling table reciprocating end detection sensor 44 constitute a detection unit that detects the left or right moving end position of the seedling table 17. The detection unit is constituted by two detected bodies (the left end detection plate 46L and the right end detection plate 46R) for one sensor 44, and only one expensive sensor is required, so that the cost is low.

  Both the left end detection plate 46L and the right end detection plate 46R have an inverted L shape in a side view. As described above, the seedling stage reciprocating end detection sensor 44 has a U-shape and allows insertion of the left and right end detection plates 46L and 46R from above. Due to the shape of both detection plates 46L and 46R and the seedling table reciprocating end detection sensor 44, the amount of seedling table reciprocating end detection sensor 44 inserted into the U-shape from above both detection plates 46L and 46R changes. The vertical movement of the platform 17 is allowed.

  As a result, the seedling stage 17 can be moved up and down without any inconvenience such as contact between the seedling stage reciprocating end detection sensor 44 and the two detection plates 46L and 46R. Since the seedling stage reciprocating end detection sensor 44 is stably fixed to the support stay 39 that does not move up and down, the accuracy of detection of the end position of the reciprocating movement of the seedling stage 17 is high.

  The planting work machine 8 can be moved up and down in a range from a height position at which the float 22 contacts the field scene to a predetermined maximum height. Expansion and contraction of the hydraulic cylinder that raises and lowers the aforementioned lifting link mechanism 7 is controlled by a control valve 45 shown in FIG. 7 that controls the flow of pressure oil from the hydraulic pump.

  The control valve 45 is provided with an operation shaft for switching the state of the control valve 45 by turning. The control valve 45 is switched to a plurality of positions according to the range of the rotation angle of the operation shaft, and the state of the hydraulic cylinder is switched according to each position of the control valve 45. The planting work machine 8 moves up and down according to the state of the hydraulic cylinder.

  The operation shaft of the control valve 45 is rotated via a lifter cam 47 that is rotatably provided on the traveling machine body 1 side. On the other hand, in the vicinity of the cam surface 47a of the lifter cam 47, an operation arm 49 provided with a roller 48 in contact with the cam surface 47a is provided swingably on the traveling machine body 1 side. The operation arm 49 is swung according to the rotation of the lifter cam 47. The operation arm 49 is connected to the operation shaft 34 side for operating on / off of the planting clutch 33 via a wire 51.

  The control valve 45 extends the hydraulic cylinder and raises the planting work machine 8 in an ascending position at a rising position where pressure oil from the hydraulic pump is sent to the hydraulic cylinder side. The swing angle range of the lifter cam 47 with the control valve 45 as the raised position is the “lifted state” of the lifter cam 47.

  Further, the control valve 45 enables the hydraulic cylinder to be contracted at a lowered position where the hydraulic oil from the hydraulic cylinder is returned to the oil tank, and causes the planting work machine 8 to be lowered by the weight of the planting work machine 8. The swing angle range of the lifter cam 47 with the control valve 45 in the lowered position is the “lowered state” of the lifter cam 47.

  Then, when the planting machine 8 is lowered while the control valve 45 is in the lowered position and the float 22 contacts the field, the hydraulic cylinder can be automatically expanded and contracted so that the planting machine 8 is moved up and down on the field scene. It becomes. This state in which the hydraulic cylinder can be automatically expanded and contracted is also realized by the “lowered state” of the lifter cam 47.

  In addition, the control valve 45 is a fixed position that stops the flow of pressure oil to the hydraulic cylinder and the flow of pressure oil from the hydraulic cylinder to the oil tank. Fix the height. The swing angle range of the lifter cam 47 with the control valve 45 as a fixed position is the “fixed state” of the lifter cam 47.

  When the lifter cam 47 is further swung from the “lowered state”, the operation arm 49 is swung, and the planting clutch 33 is engaged and operated. In the “planting state” of the lifter cam 47, the control valve 45 maintains a state in which the hydraulic cylinder can be automatically expanded and contracted so that the planting work machine 8 can be moved up and down on the field scene.

  The above-described lifter cam 47 is controlled to rotate by the operation motor 52. As shown in FIG. 8, the operation motor 52 is connected to the output side of the microcomputer unit 53, and the operation is controlled by the microcomputer unit 53. That is, the raising / lowering of the planting work machine 8 is controlled by the microcomputer unit 53. Further, a planting monitor 58 for notifying that a planting operation is being performed is connected to the output side of the microcomputer unit 53.

  On the lifter cam 47 side, a lifter cam potentiometer 54 is provided as a detector for detecting the rotation angle of the lifter cam 47. The lifter cam potentiometer 54 is connected to the input side of the microcomputer unit 53.

  Further, on the input side of the microcomputer unit 53, the lift lever switch 56 for detecting the upward or downward swinging operation (raising operation or lowering operation) of the lifting operation lever 12 and the lifting height position of the planting work machine 8 are set. The lift angle potentiometer 57 to be detected, the above-described planting switch 15, the above-mentioned seedling table reciprocating end detection sensor 44, the alarm stop switch 10, and the like are connected.

  On the microcomputer unit 53 side, a hydraulic lifting control program for controlling the lifting and lowering of the planting work machine 8 and the on / off of the planting clutch 33 according to the state of each input device is stored. The microcomputer unit 53 functions as a hydraulic lifting control unit according to the hydraulic lifting control program, and controls the lifting and lowering of the planting work machine 8 and the on / off of the planting clutch 33 based on the hydraulic lifting control flow shown in FIG.

  As shown in FIG. 9, in the hydraulic lifting control flow, the lifting operation lever is controlled in step S <b> 1, and the planting work machine 8 is lifted or lowered according to the operation of the lifting operation lever 12. Let

  Next, the process proceeds to step S2, and automatic planting stop start control is performed. When the seedling stage 17 is located at the end of the left and right reciprocating movement, the planting clutch 33 is automatically operated to move the seedling stage 17 to the left and right. And the start judgment of the planting automatic stop means etc. which stop the rotational drive of the planting part 21 are performed. And it progresses to step S3, performs planting automatic stop control, and the said planting automatic stop is performed when the start of the planting automatic stop means is set by the said planting automatic stop start control.

  In addition, when the start of the planting automatic stop means is not set by the planting automatic stop start control, the planting automatic stop control is performed, but the planting automatic stop is not executed. Thereafter, the process proceeds to step S4, where the state of the lifter cam 47 is checked based on the information from the lifter cam potentiometer 54. If the state of the lifter cam 47 is "up", the process proceeds to step S5, and the planting is performed based on the information from the lift angle potentiometer 57. It is checked whether or not the attached work machine 8 is at the highest height.

  If the planting work machine 8 is at the highest height in step S5, the process proceeds to step S6, the state of the lifter cam 47 is switched to the “fixed state” by the operation motor 52, and the process proceeds to step S7. Turn it off and return. If the planting work machine 8 is not at the highest height in step S5, the process proceeds to step S7 and returns. Thereby, the planting work machine 8 rises with the maximum height as the upper limit.

  On the other hand, if the state of the lifter cam 47 is other than the “raised state” in step S4, the process proceeds to step S8, the state of the lifter cam 47 is checked again based on the information of the lifter cam potentiometer 54, and the lifter cam 47 is “planting state” In step S9, the planting clutch 33 is engaged and operated, and the "planting clutch waiting state" set by the lifting operation lever control as described later is canceled, and the procedure proceeds to step S10, and the planting monitor 58 is turned on. And return.

  As a result, when the lifter cam 47 is switched to the “planting state”, the planting clutch 33 is engaged and actuated, and the planting monitor 58 is lit, and the planting operation is started. If the lifter cam 47 is other than “planting state” in step S8, the process proceeds to step S7 and returns.

  Next, an operation flow of the above-described lifting operation lever control will be described. As shown in FIG. 10, first, in step S1, the operation of the elevating lever 12 is checked based on the information from the elevating lever switch 56. If there is an elevating operation, the process proceeds to step S2, and the state of the lifter cam 47 is changed. Check based on information from lifter cam potentiometer 54. When the lifter cam 47 is in the “raised state” in step S2, the flow returns to the hydraulic pressure raising / lowering control flow as it is. Thus, even if the lifting operation lever 12 is raised when the planting work machine 8 is raised, the raising of the planting work machine 8 is not particularly disturbed.

  On the other hand, if the lifter cam 47 is in a state other than the “raised state” in step S2, the process proceeds to step S3, and the state of the lifter cam 47 is checked again based on information from the lifter cam potentiometer 54. If the lifter cam is in the “fixed state” in step S3, the process proceeds to step S4, where the operation motor 52 switches the lifter cam 47 to the “lowered state” and returns to the hydraulic lift control flow.

  Thereby, when the lifter cam 47 is in the “fixed state”, that is, when the position of the planting work machine 8 is fixed at a predetermined height, when the lifting operation lever 12 is raised, the lifter cam 47 is brought into the “raised state”. The planting work machine 8 starts to rise.

  On the other hand, if the lifter cam 47 is not in the “fixed state” in step S3, the process proceeds to step S5, and the state of the lifter cam 47 is checked again based on information from the lifter cam potentiometer 54. If the lifter cam 47 is in the “planting state” in step S5, the process proceeds to step S6, where the operation motor 52 switches the lifter cam 47 to the “down state” and returns to the hydraulic lift control flow.

  As a result, when the lifter cam 47 is in the “planting state”, that is, when the planting work machine 8 (float 22) is in contact with the field scene, the lifter arm 47 is operated by raising the elevating operation lever 12. Is switched to the “lowered state”, and the planting work machine 8 is in a state in which the planting clutch 33 is disengaged while the float 22 is in contact with the field, and the planting operation is stopped.

  If the lifter cam 47 is in the “lowered state” in step S5, the process proceeds to step S7 to check the lowered state of the planting work machine 8 based on the information from the lift angle potentiometer 57. If the lowering of the planting work machine 8 has not stopped, the process proceeds to step S8, and the lifter cam 47 is set to the “fixed state” by the operation motor 52, and the flow returns to the hydraulic lift control flow. When the planting work machine 8 has stopped descending in step S7, the process proceeds to step S4.

  Accordingly, when the lifting operation lever 12 is raised while the planting work machine 8 is lowered, the lifter cam 47 is switched to the “fixed state”, the height of the planting work machine 8 is fixed, and the planting work machine 8 can be arbitrarily set. Can be fixed at a height of

  On the other hand, if the lifting operation lever 12 is lowered in step S1, the process proceeds to step S9, and the state of the lifter cam 47 is checked based on the information from the lifter cam potentiometer 54. If the lifter cam 47 is in the “raised state”, the process proceeds to step S10, the operation motor 52 switches the lifter cam 47 to the “fixed state”, and the flow returns to the hydraulic pressure raising / lowering control flow.

  Accordingly, when the lifting operation lever 12 is lowered while the planting work machine 8 is raised, the lifter cam 47 is switched to the “fixed state”, the height of the planting work machine 8 is fixed, and the planting work machine 8 can be arbitrarily set. Can be fixed at a height of

  If the lifter cam 47 is not in the “raised state” in step S9, the process proceeds to step S11, and the state of the lifter cam 47 is checked again based on information from the lifter cam potentiometer 54. If the lifter cam 47 is in the “fixed state” in step S11, the process proceeds to step S12, where the operation motor 52 switches the lifter cam 47 to the “lowered state” and returns to the hydraulic lift control flow.

  As a result, when the lifter cam 47 is in the “fixed state”, that is, when the planting work machine 8 is fixed at a predetermined height, when the lifting operation lever 12 is lowered, the lifter cam 47 is brought into the “lowered state”. The planting work machine 8 starts to be lowered.

  On the other hand, if the lifter cam 47 is other than the “fixed state” in step S11, the process proceeds to step S13 to check whether the planting switch 15 is turned on or off. If the planting switch 15 is ON, the process proceeds to step S14, and the state of the lifter cam 47 is checked based on information from the lifter cam potentiometer 54.

  If the lifter cam 47 is in the “lowered state” in step S 14, the process proceeds to step S 15 to check the lowered state of the planting work machine 8 based on information from the lift angle potentiometer 57.

  When the descent of the planting work machine 8 is stopped, the process proceeds to step S16, and the operation motor 52 sets the lifter cam 47 to the “planting state” and returns to the hydraulic lift control flow. If the descent of the planting work machine 8 is not stopped in step S15, the process proceeds to step S17, where the “waiting state for engaging planting clutch” is set, and the flow returns to the hydraulic lift control flow.

  As a result, when the elevating operation lever 12 is operated to be lowered in the state where the planting switch 8 is in contact with the farming scene while the planting switch 15 is engaged, the planting clutch 33 is activated and the planting operation is started. Is possible.

  If the planting switch 15 is OFF in step S13, or if the lifter cam 47 is in the “planting state” in step S14, the flow returns to the hydraulic lift control flow. For this reason, even if the lifting operation lever 12 is lowered during the planting operation, the planting operation is not particularly disturbed.

  On the other hand, in step S1, when there is no operation of the raising / lowering operation lever 12, it progresses to step S18 and it is checked whether it is "a waiting state for planting clutch engagement". In the case of the “waiting state for planting clutch”, the process proceeds to step S19, and the descending state of the planting work machine 8 is checked based on the information from the lift angle potentiometer 57.

  When the lowering of the planting work machine 8 is stopped, the process proceeds to step S20, and the lifter cam 47 is set in the “planting state” by the operation motor 52, and the process returns to the hydraulic lifting control flow. If the descent of the planting work machine 8 is not stopped in step S19, the process returns to the hydraulic pressure raising / lowering control flow.

  As a result, when the raising / lowering operation lever 12 is lowered while the planting work machine 8 is descending in the state where the planting switch 15 is turned on, the planting work machine 8 is moved to the field without the operation of the raising / lowering operation lever 12 thereafter. When it comes into contact with the surface so as to be able to follow, the planting clutch 33 is automatically engaged and driven, and the planting operation can be started.

  As described above, the raising / lowering operation lever control controls the raising / lowering of the planting work machine 8 according to the up / down operation of the raising / lowering operation lever 12, and the on / off of the planting clutch 33 is controlled.

  Next, the operation flow of the aforementioned planting automatic stop control will be described. As shown in FIG. 11, first, in step S1, it is checked whether an automatic stop start flag is set (ON) or not (OFF). When the automatic stop start flag is set, the process proceeds to step S2 and the state of the lifter cam 47 is checked based on information from the lifter cam potentiometer 54.

  The automatic stop start flag is set by planting automatic stop start control. If the lifter cam 47 is in the “planting state” (the planting clutch 33 is engaged) in step S2, the process proceeds to step S3, and the state of the seedling table reciprocating end detection sensor 44 is checked.

  If the seedling table reciprocating end detection sensor 44 is ON in step S3, the process proceeds to step S4, and the state of the seedling table reciprocating end detection sensor 44 at the previous flow is checked. In step S4, if the previous state of the seedling table reciprocating end detection sensor 44 is OFF, the process proceeds to step S5, the automatic stop start flag is turned OFF, and the lifter cam 47 is switched to the “lowered state” by the operation motor 52. Return to the lift control flow.

  By changing the lifter cam 47 from the “planting state” to the “lowered state”, the planting clutch 33 is turned off. If the automatic stop start flag is OFF in step S1, the lifter cam 47 is other than “planting state” in step S2, the seedling table reciprocating end detection sensor 44 is OFF in step S3, or the seedling table in step S4. When the reciprocating end detection sensor 44 is ON, the flow returns to the hydraulic pressure raising / lowering control flow as it is.

  When the automatic stop start flag is set as described above, at the moment when the state of the seedling platform reciprocating end detection sensor 44 switches from OFF to ON, that is, the moment when the seedling platform 17 reaches the end of the left and right movement, the planting clutch By the cutting operation of 33, the left and right reciprocating movement of the seedling placing table 17 is stopped, and the operation of the planting part 21 is stopped.

  That is, the process from step S5 and step S1 to step S5 becomes the planting automatic stop means, and the automatic stop start flag becomes the operation start instruction data of the planting automatic stop means. The automatic stop start flag is cleared (OFF) when the right and left reciprocating movement of the seedling platform 17 by the automatic stop means and when the rotation driving of the planting unit 21 is stopped.

  Next, as shown in FIG. 12 for explaining the operation flow of the above-described planting automatic stop start control, first, in step S1, the state of the engine is checked. If the engine is rotating, the process proceeds to step S2 and the planting switch 15 is checked. When the planting switch 15 is turned on (ON) in step S2, the process proceeds to step S3, and the operation of the lifting operation lever 12 is checked based on the information from the lifting lever switch 56.

  When there is no raising operation of the raising / lowering operation lever 12, it progresses to step S4 and the state of the lifter cam 47 is checked based on the information from the lifter cam potentiometer 54. If the lifter cam 47 is not in the “raised state” in step S4, the process proceeds to step S5, and the state of the lifter cam 47 is checked again based on information from the lifter cam potentiometer 52. In step S5, when the lifter cam 47 is in the “fixed state” or “lowered state”, the process proceeds to step S6 to check whether the alarm stop switch 10 is turned on or off.

  When the alarm stop switch 10 is turned on (ON) in step S6, the process proceeds to step S7, and the operation of the lifting operation lever 12 is checked based on the information from the lifting lever switch 56. If it is determined in step S7 that the lifting operation lever 12 has been lowered, the process proceeds to step S8, an automatic stop start flag is set (ON), and the lifter cam 47 is set in the “planting state” by the operation motor 52. .

  As a result, the alarm stop switch 10 and the lifting / lowering operation lever 12 serve as an operating unit for operating the planting automatic stop means to start operation. If the lifting / lowering operation lever 12 is lowered while the alarm stop switch 10 is turned on, the automatic stop start flag is set. By this, the planting automatic stop means is operated by the above planting automatic stop control, the seedling placing stand 17 is stopped at the left or right movement end position, and the rotational drive of the planting unit 21 is stopped.

  If the engine is stopped in step S1, the planting switch 15 is turned off (OFF) in step S2, the lifting operation lever 12 is raised in step S3, the lifter cam 47 is in the “up state” in step S4. ", The process proceeds to step S9, the automatic stop start flag is cleared (OFF), and the flow returns to the hydraulic pressure elevating control flow.

  In step S5, if the lifter cam is in a state other than the fixed state or the lowered state, for example, in the planting state, the flow returns to the hydraulic lift control flow as it is. Furthermore, when the alarm stop switch is turned off (OFF) in step S6, even if the lifting operation lever 12 is not lowered in step S7, the flow directly returns to the hydraulic lifting control flow.

  When the planting operation is performed in the field by the above flow, the lifter cam 47 is in the “planting state”, so that the process cannot proceed from step S5 to step S6. As a result, during the planting operation, the automatic planting stop means does not operate because any automatic unit for starting the planting automatic stop unit is activated. During the planting operation, the seedling stage 17 is automatically stopped at the left and right movement end positions, and the operation of the planting unit 21 is not automatically stopped.

  That is, step S5 constitutes an automatic restricting means for restricting the operation of the planting automatic stop means, and by this automatic restricting means, the raising / lowering operation lever 12 is operated while the alarm stop switch 10 is turned on and activated during the planting operation. The planting automatic stop means does not operate even when the state of the seedling platform reciprocating end detection sensor 44 is switched from OFF to ON due to a malfunction or the like. For this reason, an automatic stop of the planting work unexpected by the operator is prevented, and inconveniences such as occurrence of a part where seedlings are not planted in the field are prevented.

  In addition, the operation unit for operating the planting automatic stop means is not a dedicated operation unit, but an alarm stop switch 10 that is originally used when the alarm is stopped, and a lifting operation lever 12 that is used to operate the planting work machine 8 to move up and down. Of the automatic planting stopping means by an operation different from the operation of operating the planting clutch 33 at the start of planting work (simply lowering the lifting operation lever 12). It is intended to start operation.

  As a result, it is not necessary to provide a special operation section for starting the operation of the automatic planting stop means, the cost can be reduced, and the operation of the automatic planting stop means can be reduced by an operation different from the operation of operating the planting clutch. Since the operation is started, an operation start operation of the planting automatic stop means, an erroneous operation of the planting work start operation, and the like are prevented.

It is a side view of a riding rice transplanter. It is a top view of an operation panel part. It is a principal part side view of a planting work machine part. It is a principal part plane expanded view which shows the planting part and the drive mechanism of a seedling stand. It is an expanded view of a rear transmission. It is a front perspective view of a seedling stand reciprocating end detection sensor part. It is a principal part fragmentary view of a control valve part. It is a block diagram which shows the input / output state with respect to a microcomputer unit. It is a hydraulic lift control flowchart. It is an operation | movement flowchart figure of raising / lowering operation lever control. It is an operation | movement flowchart figure of planting automatic stop control. It is an operation | movement flowchart figure of planting automatic stop start control.

Explanation of symbols

8 Planting work machine 10 Alarm stop switch (operating tool)
12 Elevating lever (operating tool)
17 Seedling stand 21 Planting part 33 Planting clutch

Claims (2)

  A seedling stand (17) on which mat seedlings for planting are mounted and reciprocated to the left and right, a planting part (21) for scraping seedlings from the seedling platform (17) and planting them in a field, and planting A planting work machine (8) having a planting clutch (33) that transmits a driving force to the reciprocating mechanism of the part (21) and the seedling platform (17) and transmits it freely, In a transplanting machine provided with an automatic planting stop means for automatically disengaging and operating the planting clutch (33) at the end of the left and right movement, and an operation unit for operating the automatic start of the planting automatic stop means, An automatic planting stop means provided with an automatic stop regulating means for regulating the operation of the automatic planting stopping means by detecting the operation start instruction of the automatic stopping means or the operation start of the automatic stopping means while continuing the planting work. Automatic stop control means of transplanter provided.   The operation tool (10), (12) provided on the transplanter side is also used as an operation unit, and planting is performed by operating the operation unit different from the operation of operating the planting clutch (33) at the start of planting work. The automatic stop regulating means for a transplanter provided with the automatic planting stop means according to claim 1 for starting the operation of the automatic stop means.

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