JP5788708B2 - Rice transplanter - Google Patents

Description

  The invention of the present application includes a seedling mounting table that can be laterally fed laterally and a plurality of planting claws and a seedling planting device that is mounted on a traveling machine, and a PTO clutch that interrupts power transmission to the seedling planting device, It is related with the rice transplanter which performs seedling planting work continuously.

  In general, the planting operation of the rice transplanter is performed by intermittently feeding the seedling platform on which the seedling mat is placed at a predetermined interval to the left and right, while the seedling mat is placed at the bottom of the seedling platform. This is done by cutting a predetermined amount of seedlings, grabbing them, and planting them directly in the field. In seedling planting work, before the seedling mat is set on the seedling stage, an edge-shifting operation is performed in which the seedling stage is moved to the left and right moving ends and stopped (see, for example, Patent Document 1). This is to prevent the planting claws from cutting off the seedling from the position in the middle of the lateral feeding of the seedling mat at the start of the seedling planting operation.

  In the rice transplanter of Patent Document 1, the PTO clutch that interrupts the transmission of power to the seedling planting device is operated in conjunction with the planting lever that moves the seedling planting device and seedling planting device with planting claws up and down. It is configured to let you. At the end-alignment operation, the planting lever is operated to the planting position to engage the PTO clutch, and the lateral feed of the seedling platform is started. Then, after visually confirming that the seedling stage has reached one of the left and right moving ends, the planting lever is operated to the neutral position to disengage the PTO clutch, and the lateral feeding of the seedling stage is stopped. .

JP-A-10-313629

  However, in the configuration of Patent Document 1, since the seedling planting device is located behind the control seat, the operator turns the planting lever to the neutral position while visually confirming the position of the seedling platform. There was room for improvement in terms of workability. In addition, since the edge-shifting operation is performed by combining manual operation of the planting lever and visual observation, there is a problem that the accuracy of the stop position of the seedling platform (whether the seedling platform has stopped at the left or right moving end) is low. It was.

  In this regard, instead of operating the planting lever, it may be possible to provide an end-adjusting button dedicated to end-adjusting work, but simply moving the seedling stage to the left or right moving end by operating the end-adjusting button stops It can be understood that, for example, it is not possible to sufficiently deal with, for example, an erroneous operation of the edge-adjusting button or when it is desired to quickly stop the edge-adjusting operation. In addition, in the case of a bag, it is troublesome to find the position of the dedicated close button.

  Therefore, the present invention improves the current situation as described above, improves the workability of the edge-shifting work and the accuracy of the stop position of the seedling stage, and can reliably stop the edge-alignment work even in the case of a cocoon, for example. Providing rice transplanters is a technical issue.

The rice transplanter according to the invention of claim 1 has a seedling mounting table and a plurality of planting claws capable of laterally feeding, and a seedling planting device mounted on the rear part of the traveling machine body, and the seedling planting device A PTO clutch for interrupting power transmission, a clutch operating tool for turning on and off the PTO clutch, and an end for executing an end-to-side mode in which the seedling platform is laterally fed to the left and right moving ends and stopped. The clutch operating tool is provided with a function of canceling the end-shifting mode being executed by the clutch disengagement operation, while the power of the engine mounted on the traveling machine body is added to the clutch operating tool. A hydraulic continuously variable transmission for shifting, and a shifting operation body provided in the traveling machine body, and in the end shift mode, the shifting operation body is shifted by a predetermined amount or more to shift the PTO clutch. Through And power transmission to the seedling planting apparatus, is that to start traversing movement of the seedling mounting table.

According to a second aspect of the present invention, in the rice transplanter according to the first aspect , if the shift operation amount of the shift operation body is equal to or greater than a predetermined amount, the shift power from the hydraulic continuously variable transmission is transmitted to the shift operation body. This is to maintain a constant regardless of the speed change operation amount .

According to the invention of the present application, the seedling planting device having a seedling mounting table and a plurality of planting claws that can be laterally fed laterally and mounted on the rear portion of the traveling machine body, and power transmission to the seedling planting device are interrupted. A PTO clutch; a clutch operating tool for turning on and off the PTO clutch; and an end-to-end operating tool for executing an end-to-end mode in which the seedling platform is laterally fed to the left and right moving ends and stopped. In addition, since the clutch operating tool has a function of canceling the end-adjusting mode being executed by the clutch disengagement operation, an operating tool that can cancel the end-adjusting mode other than the end-adjusting operation tool. Normally, the clutch operating tool for operating the PTO clutch on and off can be used. Therefore, for example, even in the case of a saddle, it is easy to stop the end-to-end mode, and it can contribute to improvement of various workability including end-to-end operation on a rice transplanter.
A hydraulic continuously variable transmission for shifting the power of the engine mounted on the traveling machine body; and a shift operation body provided on the traveling machine body. By performing a speed change operation of a predetermined amount or more, power is transmitted to the seedling planting device via the PTO clutch, and a lateral feed movement of the seedling mounting base is started, and the speed change operation amount of the speed change operating body is a predetermined amount or more. If so, the shifting power from the hydraulic continuously variable transmission is kept constant regardless of the shifting operation amount of the shifting operation body. The operator can accurately recognize the start of the feed movement, and there is no possibility that the seedling stage will inadvertently start the lateral feed movement. In addition, it is possible to avoid the possibility that the seedling platform will overrun due to excessive shifting operation of the shifting operation body.

It is a side view of the riding type rice transplanter in the embodiment. It is a top view of a riding type rice transplanter. It is a front view of a seedling planting apparatus. It is a top view which shows the power transmission structure in a seedling planting apparatus. It is a side view of a seedling stand. It is an exploded top view of a seedling stand. It is an enlarged front view of an edge detection sensor. It is a functional block diagram of a planting work controller. It is a top view of the driving operation part which abbreviate | omitted the steering handle. It is a flowchart of end alignment mode control.

  Below, the embodiment which materialized this invention is described based on drawing at the time of applying to riding type rice transplanter 1 of 8 row planting type. In the following description, the left side in the traveling direction of the traveling machine body 2 is simply referred to as the left side, and the right side in the traveling direction is also simply referred to as the right side.

(1). First, an outline of the riding type rice transplanter 1 will be described with reference to FIGS. 1 and 2. The riding type rice transplanter 1 according to the embodiment includes a traveling machine body 2 supported by a pair of left and right front wheels 3 as well as a pair of left and right front wheels 3. An engine 5 is mounted on the front part of the traveling machine body 2, and the power from the engine 5 is transmitted to the rear transmission case 6, and the front wheel 3 and the rear wheel 4 are driven to move forward and backward. ing. A front axle case 7 projects from the left and right sides of the transmission case 6, and the front wheels 3 are disposed on the front axle case 7 so as to be steerable. A cylindrical frame 8 protrudes behind the transmission case 6, a rear axle case 9 is fixed on the rear end side of the cylindrical frame 8, and the rear wheel 4 is disposed on the rear axle case 9.

  As shown in FIGS. 1 and 2, an operator boarding work step (vehicle body cover) 10 is provided on the upper surface side of the front part and the center part of the traveling machine body 2. A front bonnet 11 is disposed above the front part of the work step 10, and the engine 5 is installed inside the front bonnet 11. A traveling speed change pedal 12 for stepping operation is disposed on the upper side of the work step 10 on the rear side of the front bonnet 11. In the embodiment, the speed change power output from the hydraulic continuously variable transmission 85 of the transmission case 6 is adjusted by driving the speed change electric motor 84 according to the depression amount of the travel speed change pedal 12 (see FIG. 8).

  In addition, a steering handle 14, a traveling main transmission lever 15, and a work lever 16 are provided in the driving operation section 13 on the rear upper surface side of the front bonnet 11. A steering seat 18 is disposed via a seat frame 17 behind the front bonnet 11 on the upper surface of the work step 10. Note that left and right spare seedling platforms 24 are provided on the left and right sides of the front bonnet 11 with the operation step 10 interposed therebetween.

  A link frame 19 is erected at the rear end of the traveling machine body 2. An eight-row seedling planting device 23 is connected to the link frame 19 via a parallel link mechanism 22 including a lower link 20 and a top link 21 (see FIG. 1). The operator gets on the work step 10 from the boarding / alighting step 25 on the side of the work step 10 and drives the seedling planting device 23 to move the seedling planting device 23 and move the seedling planting in the field while moving in the field by the driving operation. Perform work (rice planting work). During the seedling planting operation, the operator replenishes the seedling planting device 23 with a seedling mat on the preliminary seedling mounting table 24 as needed.

(2). Next, the structure of the seedling planting device 23 will be described with reference to FIGS. 3 to 6 in addition to the previous drawings. As shown in FIGS. 3 and 4, the seedling planting device 23 includes a planting input case 26 to which power is transmitted from the engine 5 via the mission case 6, and an 8-strip 4 connected to the planting input case 26. A set (one set of two) of planting transmission cases 27, a seedling planting mechanism 28 provided on the rear end side of each planting transmission case 27, a seedling mounting base 29 for eight-row planting, and each planting And a float 32 for surface flattening disposed on the lower surface side of the transmission case 27. The seedling planting mechanism 28 is provided with a rotary case 31 having two planting claws 30 for one line. Two planted rotary cases 31 are arranged in the planting transmission case 27. By one rotation of the rotary case 31, the two planting claws 30 cut and grasp one seedling each, and plant it on the field leveled by the float 32.

  Although illustration is omitted, the power from the engine 5 via the mission case 6 is transmitted not only to the front wheels 3 and the rear wheels 4 but also to the planting input case 26 of the seedling planting device 23. In this case, the power from the transmission case 6 toward the seedling planting device 23 is once transmitted to the inter-shaft transmission case provided at the upper right side of the rear axle case 9, and is transmitted from the inter-shaft transmission case to the planting input case 26. The seedling planting mechanism 28 and the seedling mount 29 are driven by the transmitted power. In the inter-strain shifting case, an inter-strain shifting mechanism that switches between seedlings to be planted, for example, to sparse planting, standard planting or dense planting, and a PTO clutch 75 (see FIG. 8) that interrupts power transmission to the seedling planting device 23 Is built-in. The PTO clutch 75 is switched between an on (power connection) state and a disengagement (power cut-off) state by driving a PTO clutch motor 76 (see FIG. 8) based on the operation of the work lever 16 in the driving operation unit 13. It is configured.

  As shown in FIGS. 2, 5, and 6, the upper surface of the seedling table 29 is partitioned by seedling ribs 33, and eight seedling mat mounting surfaces 34 are formed on the upper surface of the seedling table 29. ing. A seedling vertical feed mechanism 35 is provided on each seedling mat mounting surface 34 of the seedling mounting table 29. The seedling vertical feed mechanism 35 includes a laterally long driving side roller 36 provided on the lower end side of the seedling mounting table 29 inclined in the seedling extraction direction, and a laterally horizontally driven driven roller provided in the middle part of the seedling mounting base. 37 and an endless belt-shaped seedling vertical feed belt 38 wound around the driving side roller 36 and the driven side roller 37 so that a part thereof is exposed to the seedling mat mounting surface 34 side. By placing two rectangular seedling mats 39 in series on each seedling mat mounting surface 34 and intermittently driving the seedling vertical feed belt 38, the seedling removal side of the seedling mat mounting surface 34 (the inclined lower end of the seedling mounting platform 29) The seedling mat 39 is conveyed longitudinally toward the side). A pair of seedling vertical feed belts 38 is arranged on the left and right sides with respect to each seedling mat mounting surface 34. The length of the seedling feeding surface of the seedling vertical feeding belt 38 is longer than the length of one seedling mat 39.

  As shown in FIGS. 2, 4, and 6, a seedling extraction plate 41 having a seedling extraction port 40 is disposed behind the planting input case 26 so as to extend substantially horizontally. A lower rail frame 42 is fixed to a lower portion of the rear surface side (opposite side of the seedling mat mounting surface 34) of the seedling mounting base 29 so as to extend substantially horizontally. A lower slide shoe 43 provided on the seedling extraction plate 41 is slidably fitted into the lower rail frame 42 from below. On the other hand, the upper rail frame 44 is fixed to the upper part on the back side of the seedling mount 29 so as to extend substantially horizontally. A seedling support column frame 45 is erected on the planting input case 26, and an upper slide shoe 46 provided on the seedling support column frame 45 is slidably fitted into the upper rail frame 44 from below. That is, the lower slide shoe 43 is fitted into the lower rail frame 42, and the upper slide shoe 46 is fitted into the upper rail frame 44, whereby the seedling stage 29 is supported so as to be capable of laterally moving in the left-right width direction ( 3 and 4).

  As shown in FIG. 3, the planting input case 26 is provided with a lateral feed drive mechanism 47 and a seedling longitudinal feed drive mechanism 48. The feed body 49 of the lateral feed drive mechanism 47 is connected to the lower back side of the seedling platform 29 and moves the seedling platform 29 in the lateral direction along the lower rail frame 42 and the upper rail frame 44. Let For this reason, the seedling mat 39 on the seedling mount 29 is continuously fed back and forth in a lateral direction. On the other hand, a pair of vertical feed drive cams 51 are fixed to the vertical feed drive shaft 50 of the seedling vertical feed drive mechanism 48. When the seedling stage 29 reaches the reciprocating end (return point of the reciprocating movement), the seedling vertical feed belt 38 is driven by the rotational drive of each vertical feed drive cam 51 by the vertical feed drive shaft 50, and the seedling stage 29 is driven. The upper seedling mat 39 is intermittently transported vertically.

  As shown in FIGS. 2 and 6, a seedling mat presser bar 52 is disposed above the seedling mat mounting surface 34 in the seedling mounting table 29. The seedling mat presser bar 52 prevents the seedling mat 39 from floating above the seedling mat mounting surface 34 and the seedling vertical feed belt 38. In the embodiment, two seedling mat pressers 52 are provided for one seedling mat mounting surface 34. The seedling mat presser bar 52 is formed in a shape that is longer than the seedling feeding action surface of the seedling vertical feeding belt 38. A midway portion of the seedling mat presser bar 52 is substantially parallel to the seedling mat mounting surface 34 and extends along the longitudinal direction of the seedling vertical feed belt 38. The upper and lower ends of the seedling mat presser bar 52 are bent to the rear side away from the seedling mat mounting surface 34, and the lower end side is fixed to the lower presser bar arm 53 and the upper end side is fixed to the upper presser bar arm 54. A lower presser bar support frame 55 is erected on the lower end side of the seedling stand rib 33 in the seedling mount 29, and the lower presser bar arm 53 is connected to the lower presser bar support frame 55. On the other hand, an upper presser bar support frame 56 is erected on the upper end side of the seedling rib 33, and the upper presser bar arm 54 is connected to the upper presser bar support frame 56.

  As shown in FIGS. 5 and 6, the seedling stage 29 of the embodiment is configured by six main body side seedling stages 29 a and two split side seedling stages 29 b. Of these, the split-side seedling stage 29b is removed, and the horizontal width of the entire seedling stage 29 can be shortened to the horizontal width of six lines. In this case, the split-side seedling stage 29b is located on the left side, and the main body side seedling stage 29a is located on the right side. The seedling ribs 33 located at the boundary between the main body side seedling stage 29a and the divided side seedling stage 29b are divided into the main body side seedling stage rib 33a of the main body side seedling stage 29a and the divided side of the divided side seedling stage 29b. It is divided into seedling ribs 33b. The main body side seedling ribs 33a and the split side seedling ribs 33b have a shape obtained by cutting the seedling ribs 33 located at the boundary portion into approximately two equal parts in the vertical direction. The main body side seedling ribs 33a and the divided side seedling ribs 33b are brought into contact with each other, thereby functioning as the seedling ribs 33 positioned at the boundary portion.

  Although not shown, one of the main body side seedling rib 33a and the divided side seedling rib 33b is provided with an engaging protrusion, and the other is provided with an engaging piece having an engaging hole into which the engaging protrusion is fitted. Yes. Due to the engagement between the engagement holes of the engagement pieces and the engagement protrusions, the split-side seedling ribs 33b come into contact with the main body-side seedling ribs 33a, and the eight seedling mounting platforms 29 are arranged side by side. Both rail frames 42, 44 of the main body side seedling stand 29a are provided with fistulas, while both rail frames 42, 44 of the split side seedling stand 29b are provided with lock arms having arrowhead-shaped cusps. It has been. By detachably locking each lock arm to the corresponding fistula body, the split-side seedling stage 29b is detachably connected to the main body side seedling stage 29a.

  As shown in FIGS. 5 and 6, a lock lever 62 that engages and disengages the lock arm is attached to the outer side of the divided-side seedling table 29 b on the side opposite to the divided-side seedling rib 33 b. The operator detaches each lock arm from each fistula by operating the lock lever 62, whereby the split-side seedling mounting base 29b is removed from the main body side seedling mounting base 29a. Conversely, the split-side seedling stage 29b is connected to the main body-side seedling stage 29a by engaging each lock arm with each fistula by operating the lock lever 62.

  As shown in FIGS. 5 and 6, a pair of left and right lower pedestal frames 63 and an upper locking frame 64 are erected on the seedling ribs 33 of the main body side seedling mounting table 29 a in a pipe shape. On the other hand, a grip arm 65 and a pair of left and right locking projections 66 are fixed to the split-side seedling mount 29b. When the horizontal width of the entire seedling stage 29 is shortened to the horizontal width of six lines, the grip arm 65 is grasped with each lock arm detached from each fistula by operating the lock lever 62, and the split side The seedling mounting base 29b is lifted, and the locking projection 66 is fitted into the lower receiving base frame 63 to support the lower part of the split-side seedling mounting base 29b. Then, the upper locking frame 64 is locked to the upper rail frame 44 of the main body side seedling mounting base 29a to hold the upper part of the divided side seedling mounting base 29b. As a result, the split-side seedling stage 29b is accommodated within the left and right lateral width of the main body side seedling stage 29a.

  In addition, the side marker 58 supported by the seedling stand support | pillar frame 45 so that rotation is possible is provided in the left-right outer side of the seedling planting apparatus 23. FIG. The side marker 58 includes a marker ring body 59 for muscle pulling and a marker arm 60 that rotatably supports the marker ring body 59. The side marker 58 is moved away from the surface by raising the marker wheel body 59 based on the operation of the operation lever 16 in the driving operation unit 13 and forming a reference locus in the next process by landing on the surface. The non-working posture is changed (rotated).

  In the seedling planting operation (rice planting operation), after placing the seedling mat 39 on each seedling mat mounting surface 34 of the seedling mounting table 29, the operator sits on the control seat 18 and moves the riding type rice transplanter 1 within the field. Let While moving, the lateral feed drive mechanism 47 laterally moves the seedling platform 29 in the left-right width direction, scraping one seedling near the seedling extraction port 40 in the seedling mat 39 with the planting claw 30, The one seedling thus scraped off is planted on a field surface (field scene) leveled with a float 32. When the seedling stage 29 is moved laterally by the lateral feed drive mechanism 47 and reaches the reciprocating movement end (one of the left and right movement ends), the seedling vertical feed belt 38 is actuated by the seedling vertical feed drive mechanism 48, and the seedling mat mounting surface The seedling mat 39 on 34 is conveyed in the seedling removal direction (backward and obliquely downward). When the seedling vertical feed operation of the seedling vertical feed belt 38 is completed and the seedling vertical feed belt 38 is stopped, the seedling mounting base 29 is again laterally moved by the lateral feed drive mechanism 47 toward the other left and right moving ends.

  As shown in FIGS. 3 and 7, the seedling support column frame 45 of the seedling planting device 23 is contacted as an end-up detection means for detecting whether the seedling stage 29 has reached the left or right moving end. An end-contact detection sensor 67 of the formula is fixed. The edge detection sensor 67 has a sensing body 68 extending upward. When the sensing body 68 is turned against the elasticity by the contact of the L-shaped contact arm 69 (see FIG. 5) fixed to the upper rail frame 44, the edge detection sensor 67 enters and operates. The arrival of the seedling table 29 at one of the left and right moving ends is detected. When the abutment arm 69 is separated from the sensing body 68 by the lateral feed movement of the seedling mount 29 to the left and right other, the sensing body 68 is rotated back by the elastic restoring force, and the edge detection sensor 67 is turned off.

  In the embodiment, the edge detection sensor 67 is located on the right side of the seedling support column frame 45 (near the main body side seedling stage 29a), and similarly, the contact arm 69 is located on the right side of the upper rail frame 44 (main body side). (Near seedling stage 29a). In a state where the contact arm 69 is in contact with the sensing body 68 of the edge detection sensor 67, the divided-side seedling mounting base 29b is farther from the center of the left and right width of the traveling machine body 2 than the main body-side seedling mounting base 29a, and is on the left outer side. It will protrude.

(3). Structure for executing end-alignment mode and operation mode thereof Next, referring to FIGS. 8 to 10, a structure for executing end-alignment mode in which the seedling stage 29 is laterally fed to the left and right moving ends and stopped. And the operation | movement aspect is demonstrated. The traveling machine body 2 is equipped with a planting work controller 70 as a control means that mainly controls the seedling planting device 23. Although illustration is omitted, the planting work controller 70 includes a CPU that executes various arithmetic processes and controls, a ROM that stores control programs and various data, a RAM that temporarily stores control programs and various data, and an input memory. It has an output interface.

  As shown in FIG. 8, at the input side of the planting work controller 70, at least the end-alignment detection sensor 67, the end-alignment button 71 as an end-alignment operation tool for executing the end-alignment mode, and the traveling main transmission lever 15 A main shift lever sensor 72 for detecting the operation position of the operation lever, a work lever sensor 73 for detecting the operation direction and the number of operations of the work lever 16, a PTO clutch sensor 74 for detecting the connection state of the PTO clutch 75, and a travel shift pedal. A speed change potentiometer 82 that detects the amount of tread 12 is electrically connected. On the output side of the planting work controller 70, at least a motor drive circuit 77 of a PTO clutch motor 76 for switching the PTO clutch 75, an end button button 78 for notifying that the end mode is being executed, and a PTO clutch A PTO clutch lamp 79 that informs that 75 is in a power connection state and a motor drive circuit unit 85 of a transmission electric motor 84 that controls an adjustment unit of the hydraulic continuously variable transmission 83 in the transmission case 6 are electrically connected. ing.

  The end alignment button 71 is disposed in the vicinity of the handle shaft of the steering handle 14 in the driving operation unit 13 (see FIG. 9). The edge alignment button 71 has a function of starting the edge alignment mode by the first pressing operation and canceling the edge alignment mode by the other pressing operation. The main transmission lever sensor 72 is disposed at the base of the traveling main transmission lever 15 disposed on the left side of the steering handle 14 in the driving operation unit 13. The traveling main transmission lever 15 is operated along a guide groove 80 formed in the driving operation unit 13 to change the traveling mode of the riding rice transplanter 1 to forward, neutral, reverse, seedling and movement modes. Can be switched to. The traveling main transmission lever 15 constitutes a traveling transmission operating tool for operating the traveling direction and traveling speed of the traveling machine body 2.

  The work lever sensor 73 is disposed at the root of the work lever 16 disposed on the right side of the steering handle 14. The work lever 16 is configured to be operable in the cross direction, and is independently responsible for a plurality of operations such as raising and lowering the seedling planting device 23, switching operation of the PTO clutch 75, and selection operation of the left and right side markers 58. It is. The work lever 16 constitutes a clutch operating tool for turning on and off the PTO clutch 75.

  In this case, if the operation lever 16 is tilted forward once, the seedling planting device 23 is lowered, and if it is tilted forward once more, the PTO clutch 75 is engaged and activated (becomes a power connection state). Conversely, when the operation lever 16 is tilted backward once, the PTO clutch 75 is disengaged (becomes powered off), and when it is tilted forward again, the seedling planting device 23 is raised. When stopping the raising / lowering operation of the seedling planting device 23, the operation lever 16 is tilted in the reverse direction. For example, when the lowering movement of the seedling planting device 23 is stopped halfway, the work lever 16 may be tilted backward. When the work lever 16 is tilted once to the left, the left side marker 58 is in the working position, and when it is tilted left again, the left side marker 58 returns to the non-working position. When the work lever 16 is tilted to the right once, the right side marker 58 is in the working position, and when the work lever 16 is tilted to the right once again, the right side marker 58 returns to the non-working position.

  The end alignment button lamp 78 and the PTO clutch lamp 79 constitute a notification member that notifies that the end alignment mode is being executed. The end alignment button lamp 78 is built in the end alignment button 71. The edge alignment button lamp 78 is configured to be turned on when the edge alignment button 71 is pressed for the first time and turned off when the edge alignment button 71 is pressed again. The PTO clutch lamp 79 is disposed in the liquid crystal panel 81 in front of the steering handle 14 in the driving operation unit 13. The PTO clutch lamp 79 is lit when the PTO clutch 75 is in a power connection state during a normal seedling planting operation or the like, and flashes at an appropriate period when the PTO clutch 75 is in a power connection state during execution of the end-to-end mode. If the clutch 75 is in a power cut-off state, it is configured to be turned off.

  The planting work controller 70, by switching operation of the PTO clutch 75 based on the detection result of the edge detection sensor 67, laterally feeds the seedling mounting platform 29 to one of the left and right moving ends (left moving end in the embodiment) and stops. Execute the edge adjustment mode. In this case, as shown in the flowchart of FIG. 10, when the traveling main transmission lever 15 is in the neutral position (S1: YES), the detection value of the PTO clutch sensor 74 is read and the PTO clutch 75 immediately before the end-alignment mode is read. The connection state is stored (S2). If the end alignment button 71 is pressed (S3: YES), the end alignment mode is started, the end alignment button lamp 78 is lit and the PTO clutch lamp 79 blinks at an appropriate cycle (S4), and the PTO clutch motor The PTO clutch 75 is engaged and operated by driving 76 (S5).

  In the end-to-end mode, when the operator depresses the travel shift pedal 12, the shift potentiometer 82 detects the amount of depression, and if the amount of depression is greater than or equal to a predetermined amount, the transmission electric motor 84 drives to make a hydraulic stepless transmission. The shifting power from the machine 83 is kept constant regardless of the amount of depression, and in this state, the lateral feed movement of the seedling table 29 is started. If the depression of the travel shift pedal 12 is released, the shifting power from the hydraulic continuously variable transmission 83 is in an idling state, so that the seedling table 29 does not move laterally. With this control, the operator can accurately recognize the start of the lateral feed movement of the seedling stage 29 with the depression of the travel shift pedal 12 as a trigger, and there is no possibility that the seedling stage 29 will inadvertently start the lateral movement movement. . In addition, it is possible to avoid the possibility that the seedling stage 29 will overrun due to an excessive depression operation of the travel shift pedal 12.

  If the work lever 16 is tilted once backward (PTO clutch 75 disengagement operation) during execution of the edge-alignment mode (S6: YES), the process proceeds to step S10, and the PTO clutch motor 76 is driven to disengage the PTO clutch 75. Let Then, both the end alignment button lamp 78 and the PTO clutch lamp 79 are turned off (S11), and the end alignment mode is canceled.

  When the travel main transmission lever 15 is operated to a position other than the neutral position during execution of the edge alignment mode (S7: YES), and when the edge alignment button 71 is pressed once again (S8: YES), step S2 It is determined whether the reading result is whether the PTO clutch 75 is turned on or off (S12). If the reading result of step S2 is the PTO clutch 75 disengagement (S12: disengagement), the process proceeds to step S10, and the PTO clutch motor 76 is driven to disengage the PTO clutch 75. Then, both the end alignment button lamp 78 and the PTO clutch lamp 79 are turned off (S11), and the end alignment mode is canceled. If the reading result of step S2 is that the PTO clutch 75 is engaged (S12: engaged), the end-to-end button lamp 78 is turned off to notify the stop of the end-to-end mode, while the PTO clutch lamp 79 is turned on and the PTO clutch 75 is turned on. It is informed that it is in the entering state (S13), and the end alignment mode is canceled.

  If the edge detection sensor 67 enters and operates during execution of the edge alignment mode, the seedling mounting base 29 has reached the left or right moving end, so that the PTO clutch motor 76 is driven to operate the PTO clutch 75 to be disconnected. The lateral feed movement of the seedling table 29 is stopped (S10). Then, both the end alignment button lamp 78 and the PTO clutch lamp 79 are turned off (S11), and the end alignment mode is terminated.

  As is clear from the above description, in the embodiment, the seedling planting device 23 having a seedling mounting base 29 and a plurality of planting claws 30 that can be laterally fed and mounted on the traveling machine body 2, and the seedling planting, A PTO clutch 75 for interrupting the transmission of power to the attaching device 23, and an end-adjusting button 71 for executing an end-adjusting mode in which the seedling stage 23 is laterally fed to the left and right moving ends and stopped. In addition, since the edge adjustment button 71 has a function of starting the edge adjustment mode and a function of canceling the edge adjustment mode being executed, the seedling button 71 can be operated only by operating the edge adjustment button 71. The platform 29 can be moved sideways and moved easily. Therefore, it is not necessary to perform the operation of disengaging the PTO clutch 75 while visually confirming the position of the seedling table 29 with the operator facing backward, and the workability of the end-to-end operation can be improved. In addition, the accuracy of the stop position of the seedling mount 29 is improved.

  Further, the operator can intuitively and surely grasp that the end-adjusting button 71 is pushed when the end-adjusting operation is desired, by looking at the end-adjusting button 71 in the driving operation unit 13. For this reason, it is excellent in user friendliness. If it is desired to cancel the edge-adjusting mode in the middle, it is possible to stop the lateral feed movement of the seedling platform 29 only by pressing the edge-adjusting button 71 once more, and there is an advantage that the operation procedure is easy to understand.

  In the embodiment, after the end-to-end mode is started while the PTO clutch 75 is in an engaged state, when the end-to-end button 71 is pushed, the PTO clutch 75 is maintained in the on-state even after the end-to-end mode is stopped. Then, after the end-to-end mode 71 is started with the PTO clutch 75 in the disengaged state, when the end-to-end button 71 is pushed, the PTO clutch 75 is returned to the off state with the stop in the end-to-end mode. When the end-alignment operation is canceled halfway by pressing the end-alignment button 71, the PTO clutch 75 immediately before the end-alignment mode is set. That is, for example, since the end-adjusting button 71 is erroneously operated, if the end-adjusting mode is canceled by pressing the end-adjusting button 71 once again, the original state before the erroneous operation can be restored. Therefore, it is not necessary to re-enter and operate the PTO clutch 75 for seedling planting work, and it is easy for the operator to understand (easy to grasp) the continuity of the operation state.

  In addition, since it is provided with an end button button 78 and a PTO clutch lamp 79 for notifying that during execution of the end position mode, it is possible to perform the above operation without facing the seedling stand 29 by turning backward as in the prior art. Whether or not the trimming mode is being executed can be determined.

  Moreover, in embodiment, the seedling planting apparatus 23 which has the seedling mounting base 29 and the some planting nail | claw 30 which can be laterally fed, and was mounted | worn by the rear part of the traveling body 2, and the said seedling planting apparatus 23 A PTO clutch 75 for interrupting power transmission, a work lever 16 for turning on and off the PTO clutch 75, and an end-to-end mode in which the seedling platform 29 is laterally fed to the left and right moving ends and stopped. And the work lever 16 has a function of canceling the end-adjusting mode being executed by the clutch disengagement operation. As an operation tool that can stop the end-to-end mode, the working lever 16 that normally operates the PTO clutch 75 can be used. For example, even in the case of scissors, the end-to-end mode can be used. Easy to soil of rambling.

  Further, a travel main transmission lever 15 for operating the traveling direction and travel speed of the traveling machine body 2 is provided. When the travel main transmission lever 16 is in a position other than the neutral position, the end button 71 is operated. However, since the edge alignment mode is not executed, a state where the edge alignment mode can be started safely is ensured, and the possibility that the traveling machine body suddenly starts running during the edge alignment mode can be reliably prevented.

  In addition, even when the travel main transmission lever 15 is operated to a position other than the neutral position during execution of the end alignment mode, the end alignment mode is canceled, so that not only the work lever 16 but also the neutral position of the travel main transmission lever 15 is set. Even in the operation other than the above, it is possible to cancel the end-alignment mode, and it is easier to cancel the end-alignment mode in the case of a wrinkle.

  In addition, the seedling stage 29 includes a main body side seedling stage 29a and a divided side seedling stage 29b, and the divided side seedling stage 29b can be detached from the main body side seedling stage 29a. In a state where the seedling stage 29 is laterally fed to the left and right moving ends and stopped, the split-side seedling stage 29b is positioned farther from the center of the lateral width of the traveling machine body 2 than the main body side seedling stage 29a. Therefore, after the seed placement stage 29 is brought close to one of the left and right moving ends by the pressing operation of the end alignment button 71, the divided side seed placement stage 29b protruding to the left and right outer sides can be removed and stored. For this reason, when the horizontal width of the entire seedling platform 29 is shortened to six horizontal widths and the riding type rice transplanter 1 is transported on a loading platform of a transport vehicle such as a 2-ton truck, the split-side seedling platform is used. This improves the workability of removing and storing the table 29b.

(4). Others The present invention is not limited to the above-described embodiment, and can be widely applied as an article sorting apparatus that conveys and sorts various types of long articles other than agricultural products. In addition, the structure of each part is not limited to embodiment of illustration, A various change is possible in the range which does not deviate from the meaning of this invention.

DESCRIPTION OF SYMBOLS 1 Riding type rice transplanter 2 Traveling machine body 5 Engine 6 Mission case 12 Traveling shift pedal 13 Driving operation part 14 Steering handle 15 Traveling main shift lever (traveling shifting operation tool)
16 Work lever (clutch operating tool)
18 Control seat 23 Seedling planting device 29 Seedling stand 29a Main body side seedling stand 29b Divided side seedling stand 30 Planting claw 67 Edge adjustment sensor 68 Sensor 69 Contact arm 70 Planting operation controller 71 Edge button ( Edge adjustment tool)
72 Main transmission lever sensor 73 Work lever sensor 74 PTO clutch sensor 75 PTO clutch 76 PTO clutch motor 77 Motor drive circuit section 78 Edge button lamp (notification member)
79 PTO clutch lamp (notification member)

Claims (2)

A seedling planting device that has a seedling mounting table that can be laterally fed laterally and a plurality of planting claws, and is attached to the rear part of the traveling machine body,
A PTO clutch that cuts off power transmission to the seedling planting device;
A clutch operating tool for turning on and off the PTO clutch;
An end-adjusting operation tool for executing an end-to-end mode in which the seedling stage is laterally fed to the left and right moving ends and stopped;
While the clutch operating tool has a function of canceling the end alignment mode being executed by the clutch disengagement operation ,
A hydraulic continuously variable transmission for shifting the power of an engine mounted on the traveling machine body, and a speed change operating body provided on the traveling machine body,
In the end-to-end mode, by shifting the shifting operation body by a predetermined amount or more, power is transmitted to the seedling planting device via the PTO clutch, and lateral feeding movement of the seedling mounting base is started.
Rice transplanter. If the speed change amount of the speed change operation body is a predetermined amount or more, the speed change power from the hydraulic continuously variable transmission is kept constant regardless of the speed change operation amount of the speed change operation body.
The rice transplanter according to claim 1.

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