JP2018033382A - Mulch rice transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mulch rice transplanter capable of notifying an operator of a covering resumption position by a proper sheet after turning of a traveling machine body on a headland.SOLUTION: When a mulch rice transplanter (P) arrives at a headland and a sheet is cut by sheet cutting means, measurement of a travel distance by travel distance measuring means is started based on a rotation amount of wheels. The mulch rice transplanter (P) turns and simultaneously travels on the headland, and when the travel distance arrives at a prescribed distance (L3, L4) set beforehand, reporting means is operated.SELECTED DRAWING: Figure 13

Description

  The present invention relates to a multi-rice transplanter capable of covering a field scene by rolling a roll sheet along with traveling in a field and transplanting seedlings onto the field from the sheet.

  Generally, when planting a rectangular field using a rice transplanter, the planting operation is performed in a range excluding a headland set to a predetermined width from the shore while reciprocating. Finally, go around the headland and finish the field planting work. In a multi-rice transplanter that transplants seedlings from the top of the sheet to the field, it is necessary to manage the covering start position of the field with the sheet so that an uncovered part and an overlapping cover part of the field do not occur. 2. Description of the Related Art Conventionally, there has been known a multi-implanting machine including a plurality of press rollers that press a roll-shaped sheet that is fed so as to cover a farm scene as the machine travels against the farm scene (see Patent Document 1). This supports the interstitial presser roller so that it can be switched between a working posture for pressing the sheet and a non-working posture for not pressing.

Japanese Patent No. 3822124

  However, in the case of the above-mentioned Patent Document 1, after turning on the headland during planting work, the covering resumption position of the field by the sheet must be determined by visual observation or experience, etc. It has not been a structure that can easily prevent uncovered portions and overlapping cover portions.

  Therefore, the present invention aims to provide a multi-rice transplanter that solves the above-described problems by notifying the operator of the position of resuming coating with an appropriate sheet after the traveling machine body turns on the headland. .

The present invention provides a traveling machine body (3) supported by a wheel (2), a planting work machine (6) supported by the traveling machine body (3) so as to be movable up and down, and the planting work machine (6). Provided with a sheet storage unit (10) capable of storing a roll-shaped sheet covering a farm scene, and a control means (40, 140), and the planting machine (6) is continuously fed out In the multi-rice transplanter (P) for transplanting seedlings from above the sheet to the field,
A travel distance measuring means (39) for measuring a travel distance (L) based on the rotation amount of the wheel (2);
Sheet cutting means (47c) for cutting the sheet;
Informing means (70, 73) for notifying based on a signal from the control means (40, 140),
The control means (40, 140) starts measuring the travel distance (L) by the travel distance measuring means (39) by cutting the sheet by the sheet cutting means (47c), and the measured travel distance When (L) reaches a predetermined distance (L3, L4) set in advance, the notification means (70, 73) is activated.
It is characterized by that.

The present invention also provides a traveling machine body (3) supported by the wheel (2), a planting work machine (6) supported by the traveling machine body (3) so as to be movable up and down, and the planting work machine (6 ) And a sheet storage unit (10) that can store a roll-shaped sheet covering a farm scene, and a control means (40, 140), and the planting machine (6) is continuously In the multi-rice transplanter (P) for transplanting seedlings from above the sheet fed into the field to the field,
A travel distance measuring means (39) for measuring a travel distance (L) based on the rotation amount of the wheel (2);
Sheet cutting means (47c) for cutting the sheet;
A work implement operating tool (21) for raising or lowering the planting implement (6);
Informing means (70, 73) for notifying based on a signal from the control means (40, 140),
The control means (40, 140) is configured such that the travel distance measured by the travel distance measuring means (39) is increased by the lifting operation of the work implement operating tool (21) in a state where the sheet is cut by the sheet cutting means (47c). (L) is started, and when the measured travel distance (L) reaches a predetermined distance (L3, L4) set in advance, the notification means (70, 73) is activated.
It is characterized by that.

  According to the first aspect of the present invention, when the travel distance after the fed sheet is cut reaches a predetermined distance, the notification means is activated. Thus, by storing the length required for turning the traveling machine body in the headland in advance as a predetermined distance, the operator can cover the farm field with a sheet after turning the traveling machine body in the headland. It is possible to know an appropriate position to resume the planting work to be performed. In addition, it is possible to reduce the possibility of consuming sheets and seedlings in vain.

  According to the second aspect of the present invention, the notifying means is activated when the travel distance after the work implement operating tool is lifted up in a state where the fed sheet is cut reaches a predetermined distance. Thus, by storing the length required for turning the traveling machine body in the headland in advance as a predetermined distance, the operator can cover the farm field with a sheet after turning the traveling machine body in the headland. It is possible to know an appropriate position to resume the planting work to be performed. In addition, it is possible to reduce the possibility of consuming sheets and seedlings in vain.

The side view which shows the multi rice transplanter which concerns on 1st Embodiment. The side view which shows the hydraulic control mechanism which raises / lowers a planting work machine. Sectional drawing which shows a travel distance measuring mechanism. FIG. 6 is an operation diagram illustrating the sheet storage unit, where (a) is a side view of the paper holder in an open state, and (b) is a side view of the paper holder in a closed state. The perspective view of a multi rice transplanter. The operation | movement figure which shows a sheet | seat cutting mechanism. It is a figure which shows the operation part provided in the drive part, (a) is a perspective view of the state which looked at the front of the drive part from the operator, (b) is an enlarged view of an input panel, (c) is an enlarged view of a display panel. . The block diagram of a control part. The work machine control flowchart. The work machine operation control flowchart. The flowchart of work start position alerting | reporting control. The flowchart of the alerting | reporting control at the time of turning. The top view which shows the planting path | route of a multi rice transplanter. The block diagram of the control part which concerns on 2nd Embodiment. The flowchart of the alerting | reporting control at the time of turning. The top view which shows the planting path | route of a multi rice transplanter.

  Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, the riding type multi-rice transplanter P according to the present embodiment has a traveling machine body 3 supported by front wheels 1 and rear wheels 2 (wheels). The planting work machine 6 is supported by the lifting link mechanism 5 so as to be lifted and lowered. The lifting / lowering link mechanism 5 has a lift cylinder 7 interposed between the traveling machine body 3 and the planting work machine 6, and responds to the expansion / contraction operation of the lift cylinder 7 by a hydraulic control mechanism 25 (see FIG. 2) described later. The planting work machine 6 is lifted and lowered.

  The planting work machine 6 includes a work machine frame 8 supported by the elevating link mechanism 5, a seedling placing base 9 on which a mat seedling is placed, and a sheet storage unit 10 for horizontally storing a roll-shaped sheet wound around a core. , A planting mechanism 11 for transplanting seedlings in a field, a cylindrical roller float 12 that slides in a field scene, a paper pressing roll 13, a cutting part 47 (see FIG. 6) of the sheet cutting mechanism 15, and the like. The planting mechanism 11 transplants seedlings scraped from the mat seedlings onto a sheet S (see FIG. 4) that is continuously fed out as the traveling machine body 3 runs to feed the field scene. To do. The fed sheet S is appropriately separated from the roll-shaped sheet stored in the sheet storage unit 10 by the sheet cutting mechanism 15. The roller float 12 is formed in a cylindrical shape extending in the left-right direction and provided in parallel in the front-rear direction, and the paper pressing roll 13 is formed in a cylindrical shape extending in the left-right direction and is disposed behind the roller float 12. The roller float 12 and the paper pressing roll 13 slide on the farm scene while pressing the fed sheet S against the farm scene, and the paper pressing roll 13 is configured to have a smaller ground contact area than the roller float 12.

  In the central part of the traveling machine body 3, a driving unit 17 is disposed on which an operator gets on and operates the traveling machine body 3 and the planting work machine 6. The driver 17 includes a driver's seat 19, a steering handle 20, a work implement operating lever 21 (a work implement operating tool, see FIG. 7), a display panel 22 (see FIG. 7), an input panel 23 (see FIG. 7), and a seat cutting. A cutting operation unit 46 (see FIG. 6) of the mechanism 15 is disposed. In the present embodiment, the front direction in which the operator seated on the driver's seat 19 is facing is defined as the front, and the front, rear, left, and right directions are defined based on the front direction.

  An engine (not shown) and a transmission (not shown) are mounted on the front portion of the traveling machine body 3. The power output from the engine is shifted by the transmission, transmitted to the front wheels 1 and the rear wheels 2, and also transmitted to the planting work machine 6 via the hydraulic control mechanism 25 (see FIG. 2). A planting clutch (work machine clutch, not shown) is provided inside the transmission, and power transmission to the planting machine 6 is connected and disconnected as the planting clutch is connected and disconnected.

  Next, the hydraulic control mechanism 25 will be described with reference to FIG. The hydraulic control mechanism 25 includes a work implement operation cam motor 30 that is driven by operating the work implement operation lever 21 (see FIG. 7), a work implement operation cam 31 that rotates based on the drive of the work implement operation cam motor 30, and a rotation. A clutch arm 35 that swings about the pin 33, swings as the work implement operation cam 31 rotates, and connects and disconnects the planting clutch, and a hydraulic control valve 29 that opens and closes as the work implement operation cam 31 rotates. And a work implement operation cam potentiometer 32 that is fixed on the same axis as the rotation axis of the work implement operation cam 31 and detects the rotational position of the work implement operation cam 31.

  The work machine operation cam 31 is pivotally supported so as to be pivotable about an axis extending in the left and right directions, each having a rotational position of an ascending position, a fixed position, a descending position, and a planting position. It is detected by the work machine operation cam potentiometer 32. When the hydraulic control valve 29 is opened / closed according to each rotation position of the work implement operation cam 31, the lift cylinder 7 expands and contracts by opening or shutting off the hydraulic pressure of a hydraulic pump (not shown) provided in the transmission, and planting. The attached work machine 6 moves up and down. Further, the elevation height of the planting work machine 6 is detected by the lift angle potentiometer 27 (see FIG. 8) based on the angle of the elevation link mechanism 5. While the work implement operation cam 31 is located at the raised position, the planting work implement 6 is raised, and while the work implement operating cam 31 is located at the fixed position, the raising / lowering operation of the planting work implement 6 is stopped and any height is increased. Now, while the height of the planting work machine 6 is maintained and is located at the lowered position, the planting work machine 6 is lowered until the roller float 12 comes into contact with the ground.

  The clutch arm 35 is pivotally supported about an axis extending in the left and right directions, and the upper end of the clutch arm 35 follows the outer periphery of the work implement operation cam 31. The arm 35 swings in the front-rear direction. As the clutch arm 35 swings, the planting clutch is disengaged and the planting mechanism 11 does not operate while the work implement operation cam 31 is located at a position other than the planting position. The planting clutch 11 is operated while the planting mechanism 11 is in operation.

  As shown in FIG. 3, the power generated by the engine is transmitted to a rear axle case 37 that supports the rear wheel 2 via an input shaft 36 that extends in the front-rear direction. A detection gear 41 that rotates integrally with the input shaft 36 and a traveling brake 43 that brakes the rotation of the input shaft 36 are provided inside the rear axle case 37. A detection gear 41 is fixed to the input shaft 36, and the rotation amount of the detection gear 41 is detected by a rotation sensor 42. That is, the rotation amount of the input shaft 36 that rotates by the same amount as the detection gear 41 is detected by a travel distance measuring mechanism 39 (travel distance measuring means) constituted by the detection gear 41 and the rotation sensor 42, and the detection result is controlled. It is output to the unit 40 (control means, see FIG. 8).

  As shown in FIG. 4, the sheet storage unit 10 includes a paper holder 57 that extends from a base end provided in the vicinity of the paper roll case 45 and is swingably supported. A paper holder operation lever 59 that opens and closes the paper holder 57 and a paper feeding knob 61 that is rotatably supported at both left and right ends of the sheet storage unit are provided. The paper holder 57 receives and holds the sheet S fed from the paper roll case 45 from below when the planting machine 6 is raised. The paper feeding knob 61 rotates the sheet stored in the paper roll case 45 by being manually rotated by an operator, and feeds the sheet to the outside of the sheet storage unit 10.

  The paper holder 57 extends from the base end portion substantially rearward to perform the planting operation (FIG. 5B), and extends from the base end portion downward and rearward to be stored in the paper roll case 45. And an open state (FIG. 5 (a)) in which it is easy to manually feed out the existing sheet. In the closed state, when the front end of the paper holder operating lever 59 is operated clockwise as viewed from the left side, the rear end of the paper holder 57 is lowered to the open state (FIG. 5A). When the front end of the paper holder operation lever 59 is operated counterclockwise as viewed from the left side, the rear end of the paper holder 57 rises to enter a closed state for performing the planting operation (FIG. 5B).

  As shown in FIG. 5, on both the left and right sides of the traveling machine body 3, auxiliary roll bases 62 capable of supporting a roll-shaped spare sheet T for use when the sheets stored in the paper roll case 45 are used up. Is arranged. The auxiliary roll base 62 supports the spare sheet T so that the central axis of the spare sheet T is substantially in the front-rear direction, and is provided in the vertical direction provided near the rear end of the spare sheet T supported by the auxiliary roll base 62. It is comprised so that rotation is possible centering on the axis | shaft. When the planting work machine 6 is in the upper end position, when the auxiliary roll table 62 is rotated, the end of the spare sheet T supported by the auxiliary roll table 62 on the rotating shaft side and the end of the paper roll case 45 And so that they are close to each other.

  FIG. 6 is a left side view showing the sheet cutting mechanism 15. The sheet cutting mechanism 15 is provided in the traveling machine body 3 so that the operator performs a cutting operation, and the cutting unit 47 is provided in the planting work machine 6 and cuts the sheet by operating the cutting operation unit 46 by the operator. And an operation wire 49 for connecting the cutting operation unit 46 and the cutting unit 47. The cutting operation unit 46 is provided behind the driver seat 19 and has a grip 46b gripped by an operator at the tip, and is a cutter that is supported so as to be swingable around a lever shaft 46c extending left and right by the operator's operation. A lever 46a, a lever fixing hook 46d that is rotatably supported by the cutter lever 46a about an axis parallel to the lever shaft 46c, and a hook that engages the lever fixing hook 46d to restrict the swinging of the cutter lever 46a. The receiving wire 46e, the cutting operation detection sensor 46f for detecting the swing of the cutter lever 46a, and the grip 46b and the lever shaft 46c are provided between the grip 46b and the lever shaft 46c. And a start end support portion 46g that is rotatably supported. The cutting portion 47 has a sheet cutter 47c (sheet cutting means) at the rear end, and is provided in front of the cutter arm 47b from the cutter shaft 47d and a cutter arm 47b that swings up and down around a cutter shaft 47d that extends to the left and right. And an end support portion 47a that rotatably supports the end of the operation wire 49 about an axis parallel to the cutter shaft 47d, and a cutter spring 47e that urges the sheet cutter 47c upward by elastic force. .

  The cutter lever 46a is supported so as to be swingable between a non-operating position that stands substantially vertically and an operating position that is tilted forward from the non-operating position until it is substantially horizontal. When the lever fixing hook 46d is engaged with the hook receiver 46e, the forward tilting of the cutter lever 46a is restricted. When the operator releases the engagement between the lever fixing hook 46d and the hook receiver 46e and tilts the cutter lever 46a to the operating position, the operation wire 49 is pulled by the cutter lever 46a, and the operation wire 49 pulls the cutter arm 47b. Then, the rear end of the cutter arm 47b tilts downward, and the sheet cutter 47c descends to the bottom of the field scene, so that the roll-shaped sheet stored in the sheet storage unit 10 and the fed sheet S are divided. The When the cutter lever 46a tilts to a position where the sheet is divided, a cutting operation detection sensor 46f having a contact switch (not shown) sends a signal to the control unit 40. When the operator stops operating the cutter lever 46a, the cutter spring 47e tilts the cutter arm 47b in a direction to lift the sheet cutter 47c upward, the operation wire 49 is pulled by the tilt of the cutter arm 47b, and the operation wire 49 is pulled by the cutter lever. 46a is pulled, and the cutter lever 46a returns from the operating position to the non-operating position.

  As shown in FIG. 7, a display panel 22 is disposed in front of the driving unit 17, an input panel 23 is disposed on the left rear side thereof, and a main transmission operation lever 26 is disposed on the left side of the input panel 23. Has been placed. When the operator operates the main speed change operation lever 26 in the forward direction from the neutral position, the forward speed is changed, and when the main speed change operation lever 26 is operated in the rear direction from the neutral position, the reverse speed is changed and the state is reversed. It is detected by a switch (not shown). On the right rear side of the display panel 22, a work machine operation lever for operating a work machine operation switch upper 66 (see FIG. 8) and a work machine operation switch lower 67 (see FIG. 8) for moving the planting work machine 6 up and down. 21 is arranged. The work implement operating lever 21 is provided so as to be swingable in the vertical direction between an ascending position and a descending position, and a lift spring and a lowered position are provided by a lever spring (not shown) provided on the work implement operating lever 21. It is biased to a neutral position provided in the middle. When the operator operates the work implement operating lever 21 upward (upward operation), the work implement operating lever 21 is switched to the raised position, and when the operator operates the work implement operating lever 21 downward (downward operation), the work implement operating lever 21 is moved. When the operator switches to the lowered position and the operator stops operating the work implement operating lever 21, the work implement operating lever 21 returns to the neutral position by the lever spring.

  The display panel 22 includes a fuel display lamp 69 that displays the remaining amount of fuel and the like, and a notification lamp 70 (notification means) that can be turned on or blinked. The notification lamp 70 operates in response to a signal output from the control unit 40 together with a notification buzzer 73 (notification means, see FIG. 8) provided in the traveling machine body 3. The input panel 23 includes a notification distance adjustment dial 75 that can adjust a headland distance L2 (see FIG. 13) described later, a notification control switch 77, a work preparation switch 80 that can regulate the driving of the planting work machine 6, and Have When the operator operates the notification control switch 77, the on state of the notification control mode in which the notification lamp 70 and the notification buzzer 73 operate and the off state of the notification control mode that does not operate are switched.

  FIG. 8 shows a control block diagram in the present embodiment, and the traveling machine body 3 performs planting work while covering the field with a sheet including the work machine control S1 (see FIG. 9) based on each input / output. The control part 40 which controls each apparatus used for is provided. The control unit 40 includes a microcomputer including a CPU 40a, a ROM 40b, a RAM 40c, an interface (I / F) 40d, and the like. On the input side of the control unit 40, a work preparation switch 80, a notification control switch 77, a work implement operation switch upper 66 and a work implement operation switch lower 67, a work implement operation cam potentiometer 32, a lift angle potentiometer 27, a rotation sensor 42, a notification A distance adjustment dial 75, a cutting operation detection sensor 46f, and the like are connected. A work machine operation cam motor 30, a notification buzzer 73, a notification lamp 70, and the like are connected to the output side of the control unit 40. The work machine operation switch upper 66 and the work machine operation switch lower 67 are operated when the operator operates the work machine operation lever 21, and while the work machine operation lever 21 is in the raised position, the work machine operation switch upper 66 is moved. While the work unit operation lever 21 is in the lowered position, the work implement operation switch lower 67 continues to send a signal to the control unit 40 while the signal is continuously sent to the control unit 40.

  FIG. 9 shows a work implement control S1 that is a main routine of the control unit 40, and each subroutine is sequentially repeated in the order of the work implement operation control S2, the work start position notification control S3, and the turning notification control S4. The work machine operation control S <b> 2 controls the raising and lowering of the planting work machine 6 based on the operation of the work machine operation lever 21, and the work start position notification control S <b> 3 performs the planting work based on the travel distance L of the traveling machine body 3. An appropriate position to be started is notified to the operator, and the turning notification control S4 is an appropriate position for resuming the planting operation performed while covering the field with the seat after turning on the headland based on the travel distance L of the traveling machine body 3. To the operator.

  Next, the work machine operation control S2 will be described with reference to FIG. First, the control unit 40 determines whether or not there is a short-time signal that is transmitted from the lower work implement operation switch 67 and exceeds 0 and less than t2, that is, the operator holds the work implement operation lever 21 to the lowered position for a short time. It is determined whether or not there is a time operation (step S11). If there is such an operation, it is determined whether or not the work preparation switch 80 is on (step S12). Here, t2 indicates that when the work implement operation switch upper 66 or the work implement operation switch lower 67 sends a signal to the control unit 40, the operator consciously moves the work implement operation lever 21 to the raised position or the lowered position for a long time. This is the minimum signal transmission time that is considered to be held at 1 and is usually preferably about 1 (second).

  When the work preparation switch 80 is on, the control unit 40 determines whether or not the work implement operation cam 31 is located at the raised position by the work implement operation cam potentiometer 32 (step S13). When work implement operation cam 31 is located at a position other than the raised position, control unit 40 determines whether work implement operation cam 31 is located at the lowered position by work implement operation cam potentiometer 32 (step S14). If the work implement operation cam 31 is located at a position other than the lowered position, the work implement operation cam potentiometer 32 determines whether the work implement operation cam 31 is located at the fixed position (step S15). When the work machine operation cam 31 is located at a position other than the fixed position, that is, at the planting position, the control unit 40 returns the processing to the work machine control S1, and when the work machine operation cam 31 is located at the fixed position, the work machine operation cam motor 30 The work implement operation cam 31 is rotated to the lowered position (step S16). When the work machine operation cam 31 is held at the lowered position, the planting work machine 6 is lowered until the roller float 12 is grounded.

  When the work preparation switch 80 is OFF in step S12, the control unit 40 determines whether or not the work implement operation cam 31 is located at the raised position by the work implement operation cam potentiometer 32 (step S17). If it is located at a position other than the raised position, it is determined whether or not the work implement operation cam 31 is located at the fixed position (step S18). When the work implement operation cam 31 is located at the fixed position in step S18, the control unit 40 rotates the work implement operation cam 31 to the lowered position by the work implement operation cam motor 30 (step S19). In step S17 and step S13, when the work implement operation cam 31 is located at the raised position and the planting work machine 6 is raised, the control unit 40 causes the work implement operation cam motor 30 to fix the work implement operation cam 31 to the fixed position. Is turned to stop the raising operation of the planting work machine 6 (step S23), and the process is returned to the work machine control S1.

  When the work implement operation cam 31 is located at a position other than the fixed position in step S18, the control unit 40 returns the process to the work implement control S1. When the work implement operation cam 31 is located at the lowered position in step S14, the control unit 40 determines whether or not the roller float 12 is grounded (step S20). When the roller float 12 is not grounded and the planting work machine 6 is descending (NO in step S20), the control unit 40 enters a planting clutch engagement waiting state (step S22). When the roller float 12 is grounded in step S20 (YES in step 20), the control unit 40 rotates the work implement operation cam 31 to the planting position by the work implement operation cam motor 30 to engage the planting clutch. Connect (step S21), release the planting clutch engagement waiting state, and return the process to the work machine control S1. In a state where the roller float 12 is in contact with the ground, the planting work machine 6 automatically opens and closes the hydraulic control valve 29 based on the change in the posture and height of the roller float 12 accompanying the follow-up to the farm scene. It is raised and lowered, and an automatic raising and lowering state is maintained in which the planting depth is kept constant.

  Accordingly, when the operator operates the work implement operation lever 21 to the lowered position for a short time, the work implement operation cam 31 rotates from the raised position to the fixed position and from the fixed position to the lowered position. When the work implement operation cam 31 is located at the lowered position and the roller float 12 is grounded, the work implement operation cam 31 is rotated to the planting position, and the work implement operation cam 31 is located at the lowered position. When the planting work machine 6 is descending, the planting clutch enters a waiting state. When the roller float 12 comes into contact with the ground, the work machine operation cam 31 rotates to the planting position, and the planting clutch is engaged. Connected. When the work implement operation cam 31 is located at the planting position, the position of the work implement operation cam 31 is maintained. When the work implement operating cam 31 is lowered and the planting work implement 6 is lowered and the roller float 12 is grounded, the work implement operating cam 31 is rotated to the planting position and the planting clutch is connected.

  When there is no short time operation to the lowered position of the work implement operation lever 21 by the operator, the control unit 40 determines whether or not there is a short time signal exceeding 0 and less than t2 sent from the work implement operation switch upper 66. That is, it is determined whether or not there is a short-time operation in which the operator holds the work implement operation lever 21 in the raised position for a short time (step S24). When there is a short-time operation to the raised position of the work implement operating lever 21 by the operator, the control unit 40 determines whether or not the work implement operating cam 31 is located at the raised position by the work implement operating cam potentiometer 32 ( Step S25). The control unit 40 returns the processing to the work machine control S1 when the work machine operation cam 31 is located at the raised position, and when the work machine operation cam 31 is located at a position other than the raised position, the work machine operation cam 31 It is determined by the potentiometer 32 whether or not the work implement operation cam 31 is located at the fixed position (step S26).

  When the work implement operation cam 31 is located at a position other than the fixed position in step S26, the control unit 40 determines whether the work implement operation cam 31 is located at the lowered position by the work implement operation cam potentiometer 32. (Step S27). When the work implement operating cam 31 is located at a position other than the lowered position, that is, at the planting position, the control unit 40 rotates the work implement operating cam 31 to the lowered position by the work implement operating cam motor 30. Cutting is performed (step S28), the process is returned to the work machine control S1, and if it is located at the lowered position, it is determined whether or not the roller float 12 is grounded (step S29). When the roller float 12 is not grounded and the planting work machine 6 is descending in step S29 (NO in step S29), the control unit 40 causes the work machine operation cam motor 30 to move the work machine operation cam 31. It rotates to a fixed position, the descent | fall operation | movement of the planting work machine 6 is stopped (step S30), and a process is returned to work machine control S1.

  When the work implement operation cam 31 is located at a fixed position in step S26 and the roller float 12 is installed in step S29 (YES in step S29), the control unit 40 causes the work implement operation cam motor 30 to The work machine operation cam 31 is rotated to the raised position (step S31), and the process is returned to the work machine control S1. When there is no short time operation by the operator to the raised position of the work machine operation lever in step S24, the control unit 40 determines whether or not the planting clutch is in a waiting state (step S32).

  In step S32, the control unit 40 returns the process to the work implement control S1 when not in the planting clutch engagement waiting state, and determines whether or not the roller float 12 is grounded in the planting clutch engagement waiting state. (Step S33). When the roller float 12 is not grounded and the planting work machine 6 is descending (NO in step S33), the control unit 40 returns the process to the work machine control S1, and the roller float 12 is grounded. In the case (YES in step S33), the work implement operation cam 31 is rotated to the planting position by the work implement operation cam motor 30 to connect the planting clutch (step S34), and the waiting state for entering the planting clutch is released and processed. Is returned to the work machine control S1.

  Accordingly, when the operator operates the work implement operation lever 21 to the raised position for a short time, when the work implement operation cam 31 is located at the planting position, the work implement operation cam motor 30 moves the work implement operation cam 31. Rotates to the lowered position. When the work implement operation cam 31 is located at the lowered position and the planting work implement 6 is being lowered, the work implement operation cam motor 30 rotates the work implement operation cam 31 to the fixed position. When the work implement operating cam 31 is located at the lowered position and the roller float 12 is grounded, the work implement operating cam motor 30 rotates the work implement operating cam 31 to the raised position. When the work implement operation cam 31 is located at the raised position, the position of the work implement operation cam 31 is maintained.

  Next, the work start position notification control S3 will be described with reference to FIGS. In the work start position notification control S3, the multi-rice transplanter moves up the planting work machine 6 and moves forward from a state in which the rear end of the planting work machine 6 is close to the ridge R (see FIG. 13). Is a control in which the control unit 40 activates a notification lamp and a notification buzzer to notify the operator of an appropriate starting position of a planting operation performed while covering a field with a sheet when the length reaches a predetermined length.

  First, the operator stops traveling of the traveling machine body 3 in a state where the rear end of the planting work machine 6 is close to the ridge R. The control unit 40 determines whether or not the notification control mode is on (step S41). If the notification control mode is off (NO in step S41), the control unit 40 returns the process to the work implement control S1, and notifies the control mode. Is ON (YES in step S41), it is determined by the work implement operation cam potentiometer 32 whether or not the work implement operation cam 31 is located at the raised position (step S42). In step S42, the control unit 40 returns the processing to the work implement control S1 when the work implement operation cam 31 is in the raised position, and when the work implement operation cam 31 is other than the raise position, the work implement operation cam potentiometer. 32, it is determined whether or not the work machine operation cam 31 is located at the fixed position (step S43).

  When the work implement operation cam 31 is located at the fixed position in step S43, the control unit 40 determines whether or not there is a long-time signal of t2 or more sent from the work implement operation switch lower 67, that is, by the operator. It is determined whether or not there is a long-time operation for holding the work implement operation lever 21 in the lowered position for a long time (step S44). In step S44, when there is a long time operation by the operator to the lowered position of work implement operation lever 21 (YES in step S44), control unit 40 starts measurement of travel distance L using rotation sensor 42 (step S45). ), The process is returned to the work machine control S1.

  Here, the operator operates the main speed change operation lever 26 in the forward direction from the neutral position to advance the traveling machine body 3 until the notification buzzer 73 and the notification lamp are activated. In step S44, the control unit 40 determines whether or not the travel distance L is the headland distance L2 or more when the operator does not operate the lowered position of the work machine operation lever 21 for a long time (NO in step S44). If the travel distance L is shorter than the headland distance L2, it is determined whether the travel distance L is equal to or longer than the notification distance L1 shorter than the headland distance L2 by a predetermined length (step S47). Here, as for the headland distance L2, for example, the length in the left-right direction that can be planted at a time when the rice transplanter (P) travels linearly in advance is stored in the control unit (40) in advance. In this case, the operator finely adjusts the length in the left-right direction with the notification distance adjustment dial 75. When the travel distance L is equal to or greater than the notification distance L1 in step S47, the control unit 40 activates the notification buzzer to emit a short sound (step S48) and blinks the notification lamp, and the process is controlled by the work implement control S1. Return to.

  The operator knows that the appropriate position for starting the planting operation to be performed while covering the farm field with the sheet is close by the short sound of the notification buzzer 73 and the flashing of the notification lamp 70, and further advances the traveling machine body 3. When the travel distance L is equal to or greater than the headland distance L2 in step S46, the control unit 40 operates the notification buzzer 73 to emit a long sound and turns on the notification lamp 70 to change the travel distance L to 0 (step S46). S49), it is determined by the rotation sensor 42 whether or not the traveling machine body 3 is traveling (step S52). In step S52, if the traveling machine body 3 is traveling, the control unit 40 returns the process to the work machine control S1, and if the traveling machine body 3 has stopped traveling, the work machine operation cam motor 30 causes the working machine operation cam motor 30 to stop the working machine. The operation cam 31 is rotated to the lowered position, and the process is returned to the work machine control S1 in a planting clutch engagement waiting state (step S53). Thereby, when the roller float 12 is grounded and the descending operation of the planting work machine 6 is stopped (step S32 of the work machine operation control S2), the work machine operation cam 31 is automatically set by the work machine operation cam motor 30. And the planting clutch is connected (step S34 of the work machine operation control S2), so that the planting operation performed while covering the field with the sheet can be started.

  After the notification of the long sound of the notification buzzer 73 and the lighting of the notification lamp 70, the operator returns the main transmission operation lever 26 to the neutral position to stop the traveling machine body 3 and lowers the planting work machine 6 to lower the planting work machine 6. By driving 6, the planting operation performed while covering the field with a sheet from an appropriate position can be started. In addition, about the end position of the planting work performed while covering the field with the sheet, the headland distance L2 is measured from the field end side facing the field end on the start side of the covering work using the work start position notification control S3. The planting operation is performed for only one row by the above, and a mark of the end position of the planting operation performed while covering the field with the sheet is previously provided.

  When the work implement operation cam 31 is not located at the fixed position in step S43 (NO in step S43), the control unit 40 causes the work implement operation cam potentiometer 32 to move the work implement operation cam 31 from the fixed position to the lowered position. It is determined whether or not there is a rotating switching operation (step S50). When the operator operates the work implement operation lever 21 to the raised position once for a short time after the notification of the long sound of the notification buzzer 73 and the notification lamp 70 is turned on, the work implement operation cam 31 is moved to the lowered position by the work implement operation cam motor 30. , The planting work machine 6 is lowered, the operation of the notification buzzer 73 and the notification lamp 70 is stopped, and the process is returned to the work machine control S1 (step S51). When there is no switching operation for rotating the work implement operation cam 31 from the fixed position to the lowered position in step S50, the control unit 40 returns the process to the work implement control S1.

  Next, the turning notification control S4 will be described with reference to FIGS. In step S51 of the work start position notification control S3, the operator lowers the planting work machine 6 until the roller float 12 contacts the ground, and then performs the work machine operation lever 21 to the lowered position once for a short time. Then, the planting work machine 6 is operated (step S21 of the work machine operation control S2), the main transmission operation lever 26 is operated in the forward direction from the neutral position, the running machine body 3 is run, and the field is covered with the seat. Start planting work.

  The control unit 40 determines whether or not the notification control mode is on (step S61). If the notification control mode is off (NO in step S61), the process returns to the work implement control S1, and the notification control mode. Is on (YES in step S61), it is determined whether or not the notification preparation flag is on (step S62). In addition, in the state where the planting operation performed while covering the field with the sheet has never been performed, the notification preparation flag is off.

  If the notification preparation flag is OFF in step S62 (NO in step S62), the control unit 40 determines whether or not there is a signal from the cutting operation detection sensor 46f (step S63), and if there is no signal (step S63). (NO in S63), it is determined whether or not there is a switching operation for rotating the work implement operation cam 31 from the lowered position to the planting position by the work implement operation cam potentiometer 32 (step S64). When there is a switching operation for rotating the work implement operation cam 31 from the lowered position to the planting position in step S64 (YES in step S64), the control unit 40 starts measuring the travel distance L using the rotation sensor 42. (Step S65), and the process returns to the work machine control S1.

  When there is no switching operation for rotating the work implement operation cam 31 from the lowered position to the planting position in step S64 (NO in step S64), the control unit 40 determines that the travel distance L is the predetermined planting confirmation distance. It is determined whether it is L0 or more (step S66). The planting confirmation distance L0 is a distance for confirming that the planting operation performed while covering the field with the sheet after the long sound notification by the notification buzzer 73 and the lighting notification by the notification lamp 70 in the work start position notification control S3 is performed. is there. Although it is required to be sufficiently longer than the rice planting interval, if it is unnecessarily long, the multi-rice transplanter P may reach the headland before the traveling distance L reaches the planting confirmation distance L0. It is desirable to be about (m). When the travel distance L is shorter than the planting confirmation distance L0 in step S66, the control unit 40 returns the process to the work implement control S1, and when the travel distance L is greater than or equal to the planting confirmation distance L0, the planting travel flag is set. Is turned on and the travel distance L is changed to 0 (step S67), and the process is returned to the work machine control S1.

  The operator performs the planting operation performed while the traveling body 3 is moved forward to cover the field with the sheet, and the one-way process immediately before the range where the planting operation is performed while covering the field with the mark of the end position or the sheet. When the end of the vehicle is reached, the main speed change operation lever 26 is returned to the neutral position to stop the traveling of the traveling machine body 3, and the work machine operation lever 21 is operated to the raised position once for a short time. The work motor operation cam 31 is rotated to the lowered position by the cam motor 30 to disconnect the planting clutch (step S28 of the work machine operation control S2). Thereafter, the operator operates the cutter lever 46a to divide the sheet stored in the sheet storage unit 10 and the sheet fed to the field, and performs the operation machine operation lever 21 to the raised position once for a short time. Then, the planting work machine 6 is raised to complete the one-way process of the planting work performed while covering the field with the sheet. When there is a signal from the cutting operation detection sensor 46f by the operator operating the cutter lever 46a in step S63 (YES in step S63), the control unit 40 determines whether or not the planting travel flag is on. If the planting travel flag is off, the process is returned to the work implement control S1, and if the planting travel flag is on, the notification preparation flag is set on and the planting travel flag is turned off. After setting (step S69), the process returns to the work machine control S1.

  When the notification preparation flag is on in step S62, the control unit 40 determines whether or not there is a switching operation for rotating the work implement operation cam 31 from the lowered position to the raised position by the work implement operation cam potentiometer 32 (step S70). When the switching operation is performed, measurement of the travel distance L is started by the rotation sensor 42 (step S71), and the process is returned to the work machine control S1. In a state where the travel distance L is being measured, the operator operates the main speed change operation lever 26 in the forward direction from the neutral position to move the traveling body 3 forward to approach the heel R and rotate the steering handle 20. Then, the traveling machine body 3 is steered to turn the direction of the traveling machine body 3 180 degrees so as to be close to the coasting radius R. Thereafter, the operator causes the traveling machine body 3 to travel toward the resuming position of the planting work performed while covering the field with the seat adjacent to the end of the immediately preceding one-way stroke.

  When there is no switching operation to rotate the work implement operation cam 31 from the lowered position to the raised position in step S70 (NO in step S70), the control unit 40 uses the work implement operation cam potentiometer 32 to perform the work implement operation cam 31. It is determined whether or not there is a switching operation for rotating the button from the fixed position to the lowered position (step S72). When there is no switching operation for rotating the work implement operation cam 31 from the fixed position to the lowered position in step S72 (NO in step S72), the control unit 40 determines whether the travel distance L is equal to or greater than the turning distance L4. Judgment is made (step S73). Here, the turning distance L4 is, for example, a length that is twice as long as the traveling body 3 travels linearly on the headland and the traveling length required until the traveling body 3 changes its direction by 180 °. It is the length calculated from the headland distance L2 and the minimum turning radius of the traveling machine 3 stored in the control unit 40 in advance.

  When the travel distance L is shorter than the turning distance L4 in step S73, the control unit 40 determines whether or not the traveling distance L is equal to or longer than the turning notification distance L3 shorter than the turning distance L4 by a predetermined length (step S74). When the distance L is shorter than the turn notification distance L3, the process is returned to the work implement control S1, and when the travel distance L is equal to or greater than the turn notification distance L3, the notification buzzer is activated to emit a short sound (step S75) and a notification lamp. Blinks, and the process returns to the work machine control S1. The operator knows that the appropriate position for starting the planting operation while covering the farm field with the sheet is close by the short sound of the notification buzzer 73 and the flashing of the notification lamp 70, and further advances the traveling machine body 3. When the travel distance L is greater than or equal to the turning distance L4 in step S73, the control unit 40 operates the notification buzzer to emit a long sound (step S76), blinks the notification lamp, and returns the process to the work implement control S1. .

  When the operator knows that an appropriate resumption position of the planting work performed while covering the farm field with the sheet is reached by the long sound notification of the notification buzzer 73 and the notification notification of the lighting of the notification lamp, the main shift operation lever 26 is set to the neutral position. The traveling of the traveling machine body 3 is stopped, the planting work machine 6 is lowered and the planting work machine 6 is driven to complete the turning of the multi-rice transplanter P, and the field is covered with a sheet from an appropriate position. Planting work can be resumed. When there is a switching operation for rotating the work implement operation cam 31 from the fixed position to the lowered position in step S72, the control unit 40 sets the notification preparation flag to OFF and activates the notification buzzer 73 and the notification lamp 70. And the travel distance L is changed to 0, and the process returns to the work implement control S1 (step S77).

  From the above, the operator emits a long sound from the notification buzzer and turns on the notification lamp when the travel distance L after operating the work implement operation lever 21 at the lowered position for a long time becomes equal to the headland distance L2, and the notification lamp lights up. It is possible to know the appropriate starting position of the planting operation performed while covering the field with the sheet, and to prevent the occurrence of the uncovered part of the field by the sheet, the overlapping covered part, the unplanted part, and the overlapping planted part. it can.

  Further, when the travel distance L becomes equal to the notification distance L1 shorter than the headland distance L2, the operator emits a short sound from the notification buzzer and the notification lamp blinks, so that the operator performs while covering the farm field with the seat. Before the travel distance L reaches the headland distance L2, it is possible to know that the appropriate start position of the planting work is near, and immediately after the long sound notification of the notification buzzer 73 and the notification of the lighting of the notification lamp 70, Planting work performed while covering can be stopped. In addition, this allows the operator to reduce the uncovered part of the field by the sheet and the unplanted part of the seedling to increase the yield, and to reduce wasteful covering of the field by the sheet and duplicate planting of the seedling. Cost can be reduced.

  Also, by marking the end position of the planting work performed while covering the field with the sheet in advance by the work start position notification control S3, the operator can unplant the field with the sheet or unplant the seedling. The yield can be increased by reducing the number of parts, and the wasteful cost can be reduced by reducing the overlapping covering of the field by the sheet and the overlapping planting of seedlings.

  When the traveling of the traveling machine body 3 is stopped while the notification buzzer 73 is in operation, the planting work machine 6 is lowered and the planting clutch is connected, so that the sheet is fed out without the planting clutch being connected. It can be prevented from being wasted.

  Further, the operator divides the sheet stored in the sheet storage unit 10 and the sheet S fed to the field by the sheet cutter 47c, and then measures a new travel distance L when the planting work machine 6 is lifted. When the measured travel distance L becomes equal to the length of the turning distance L4, a long sound is emitted from the notification buzzer and the notification lamp is turned on, so that the operator can know the appropriate resuming position of the planting operation after turning the field. It is possible to prevent the occurrence of uncovered portions, overlapping covered portions, unplanted portions, and overlapping planted portions of the field due to the sheet.

  Further, when the travel distance L after the operator operates the work implement operation lever 21 to the lowered position for a long time becomes equal to the turning notification distance L3, a short sound is emitted from the notification buzzer 73 and the notification lamp 70 blinks. Can know that the appropriate resuming position of the planting work to be performed while covering the farm field with the seat is close before the travel distance L reaches the turning distance L4, and notifies the buzzer of the notification buzzer and the notification lamp lighting. Immediately after that, the planting operation performed while covering the field with the sheet can be stopped.

  In either the work start position notification control S3 or the turning notification control S4, the travel distance L is automatically changed to 0 after the long sound notification of the notification buzzer 73, so that the labor of the operator is saved and the travel distance is reduced. It is possible to prevent erroneous measurement of the travel distance L due to forgetting to change L to 0.

  Further, the provision of the notification distance adjustment dial 75 that can adjust the headland distance L2 allows the operator to adjust the headland distance as desired, so that convenience can be improved.

  Next, a second embodiment of the present invention will be described with reference to FIG. 1, FIG. 7, and FIG. 13 to FIG. The riding type multi-rice transplanter Q according to the present embodiment is different from the first embodiment only in the input panel, the control unit 140, the planting automatic switch 177, the steering angle potentiometer 176, and the turning notification control S104. Since the others are the same, the configuration and control similar to those of the first embodiment are not shown, or the same reference numerals are given to the drawings and description thereof is omitted.

  As shown in FIG. 1, the riding type multi-rice transplanter Q according to the present embodiment has a traveling machine body 3 supported by front wheels 1 and rear wheels 2, and the traveling machine body 3 includes a steering handle 20 and And a steering angle potentiometer 176 (see FIG. 14) for detecting the rotation angle of the steering handle 20. The detection result by the steering angle potentiometer 176 and the detection result by the travel distance measuring mechanism 39 are output to the control unit 140 (control means, see FIG. 14).

  As shown in FIG. 7, a display panel 22 is disposed in front of the operation unit 17, an input panel 23 is disposed on the left rear side thereof, and a planting work machine is disposed on the right rear side of the display panel 22. A work implement operation lever 21 for operating a work implement operation switch upper 66 (see FIG. 8) and a work implement operation switch lower 67 (see FIG. 8) for moving up and down 6 is disposed. The input panel 23 includes a notification distance adjustment dial 75 that can adjust the headland distance L2, a planting automatic switch 177, and a work preparation switch 80 that can regulate the driving of the planting work machine 6. When the operator operates the planting automatic switch 177, the on state of the notification control mode in which the notification lamp 70 and the notification buzzer 73 are activated and the off state of the notification control mode in which the operator is not activated are switched.

  FIG. 14 is a control block diagram according to the present embodiment. The traveling machine body 3 performs planting work while covering the field with a sheet including the work machine control S1 (see FIG. 9) based on each input / output. A control unit 140 is provided for controlling each device used. The control unit 140 includes a microcomputer including a CPU 140a, a ROM 140b, a RAM 140c, an interface (I / F) 140d, and the like. On the input side of the control unit 140, a work preparation switch 80, a planting automatic switch 177, a work implement operation switch upper 66 and a work implement operation switch lower 67, a work implement operation cam potentiometer 32, a lift angle potentiometer 27, a rotation sensor 42, A notification distance adjustment dial 75, a steering angle potentiometer 176, and the like are connected. The work machine operation cam motor 30, a notification buzzer 73, a notification lamp 70, and the like are connected to the output side of the control unit 140. The control unit 140 operates the notification lamp 70 and the notification buzzer 73 based on the results of the work start position notification control S3 and the turning-time notification control S104, which will be described later, so that the operator performs the planting while covering the field with the seat. An appropriate start position of the work is notified.

  Next, the turning notification control S104 will be described with reference to FIGS. In step S51 of the work start position notification control S3, the operator lowers the planting work machine 6 until the roller float 12 contacts the ground, and then performs the work machine operation lever 21 to the lowered position once for a short time. Then, the planting work machine 6 is operated (step S21 of the work machine operation control S2), the main transmission operation lever 26 is operated in the forward direction from the neutral position, the running machine body 3 is run, and the field is covered with the seat. Start planting work.

  The control unit 140 determines whether or not the planting automatic mode is on (step S161). The on / off state of the planting automatic mode is switched by the planting automatic switch 177. When the notification control mode is on, the planting automatic mode is also on and the notification control mode is off. In some cases, the planting automatic mode is also off.

  In step S161, if the notification control mode is off (NO in step S161), the process returns to the work implement control S1, and if the notification control mode is on (YES in step S161), the notification preparation flag is on. It is determined whether or not (step S162). In addition, in the state where the planting operation performed while covering the field with the sheet has never been performed, the notification preparation flag is off.

  When the notification preparation flag is OFF in step S162 (NO in step S162), control unit 140 performs a switching operation for rotating work implement operation cam 31 from the lowered position to the raised position by work implement operation cam potentiometer 32. The presence / absence is determined (step S163), and if there is no switching operation (NO in step S163), it is determined whether or not there is a switching operation for rotating the work implement operation cam 31 from the lowered position to the planting position by the work implement operation cam potentiometer 32. Judgment is made (step S164). In step S164, when there is a switching operation for rotating work implement operation cam 31 from the lowered position to the planting position (YES in step S164), control unit 140 starts measurement of travel distance L using rotation sensor 42. (Step S165), and the process returns to the work machine control S1.

  When there is no switching operation for rotating the work implement operation cam 31 from the lowered position to the planting position in step S164 (NO in step S164), the control unit 140 determines that the travel distance L is the predetermined planting confirmation distance. It is determined whether it is L0 or more (step S166). In step S166, control unit 140 returns the process to work implement control S1 when travel distance L is shorter than planting confirmation distance L0, and planting travel flag when travel distance L is greater than or equal to planting confirmation distance L0. Is turned on and the travel distance L is changed to 0 (step S167), and the process returns to the work machine control S1.

  The operator performs the planting operation performed while the traveling body 3 is moved forward to cover the field with the sheet, and the one-way process immediately before the range where the planting operation performed while covering the field with the mark of the end position or the sheet is performed. When the end is reached, the main transmission operating lever 26 is returned to the neutral position to stop the traveling of the traveling machine body 3, and the working machine operating lever 21 is operated to the raised position once for a short time. The work implement operation cam 31 is rotated to the lowered position by 30 to disengage the planting clutch (step S28 of the work implement operation control S2). Thereafter, the operator operates the cutter lever 46a to divide the sheet stored in the sheet storage unit 10 and the sheet fed to the field, and performs the operation machine operation lever 21 to the raised position once for a short time. Then, the planting work machine 6 is raised to complete the one-way process of the planting work performed while covering the field with the sheet.

  When there is a switching operation for rotating the work implement operation cam 31 from the lowered position to the raised position in Step S163 (YES in Step S163), the control unit 140 stops traveling of the traveling machine body 3 by the rotation sensor 42. It is determined whether or not there is (step S168). In step S168, control unit 140 returns the process to work implement control S1 if traveling has not stopped, and determines whether the planting traveling flag is on if traveling has stopped (step S168). S169). In step S169, control unit 140 returns the process to work implement control S1 when the planting travel flag is off, and sets the notification preparation flag to on when the planting travel flag is on and sets the planting travel flag. Is set to OFF (step S170), and the process returns to the work machine control S1.

  The operator causes the traveling machine body 3 to travel to approach the heel R, rotates the steering handle 20 to steer the traveling machine body 3, and turns the traveling machine body 3 by 180 ° so as to approach the heel R. If the notification preparation flag is on in step S162, the control unit 140 determines whether or not the steering handle 20 is steered at a predetermined angle or more by the steering angle potentiometer 176 (step S171), and steering is performed at a predetermined angle or more. If it is detected, measurement of the travel distance L is started by the rotation sensor 42 (step S172), and the process is returned to the work implement control S1.

  In the state where the travel distance L is being measured, the operator travels the traveling machine body 3 toward the resuming position of the planting operation performed while covering the field with the sheet adjacent to the end of the immediately preceding one-way stroke. When the steering handle 20 has not been steered beyond a predetermined angle in step S171 (NO in step S171), the control unit 140 rotates the work implement operation cam 31 from the fixed position to the lowered position by the work implement operation cam potentiometer 32. It is determined whether or not there is a switching operation to move (step S173). In step S173, when there is no switching operation for rotating work implement operation cam 31 from the fixed position to the lowered position (NO in step S173), control unit 140 determines whether traveling distance L is turning distance L6 or more. Judgment is made (step S174). Here, the turning distance L6 is, for example, the distance traveled linearly on the headland when the traveling machine body 3 is turned and until the direction of the traveling machine body 3 is changed by 180 ° after the measurement of the traveling distance L is started. Is a length calculated from the headland distance L2 and the minimum turning radius of the traveling machine 3 stored in the control unit 140 in advance.

  When the travel distance L is shorter than the turning distance L6 in step S174, the control unit 140 determines whether the traveling distance L is equal to or longer than the turning notification distance L5 shorter than the turning distance L6 by a predetermined length (step S175). When the distance L is shorter than the turn notification distance L5, the process is returned to the work implement control S1, and when the travel distance L is equal to or longer than the turn notification distance L5, the notification buzzer 73 is activated to emit a short sound (step S176). The lamp 70 is blinked, and the process returns to the work machine control S1. The operator knows that the appropriate position for starting the planting operation while covering the farm field with the sheet is close by the short sound notification of the notification buzzer 73 and the flashing notification of the notification lamp 70, and further advances the traveling machine body 3. When the travel distance L is greater than or equal to the turning distance L6 in step S174, the control unit 140 activates the notification buzzer 73 to emit a long sound (step S177) and blinks the notification lamp 70, and the rotation sensor 42 causes the traveling machine body to flash. It is determined whether or not 3 is traveling (step S179). In step S179, if the traveling machine body 3 is traveling, the control unit 40 returns the process to the work machine control S1, and if the traveling machine body 3 has stopped traveling, the working machine operation cam motor 30 causes the working machine operation cam motor 30 to The operation cam 31 is rotated to the lowered position to enter a planting clutch engagement waiting state, and the process returns to the work machine control S1 (step S180). Thereby, when the roller float 12 is grounded and the descending operation of the planting work machine 6 is stopped (step S32 of the work machine operation control S2), the work machine operation cam 31 is automatically set by the work machine operation cam motor 30. And the planting clutch is connected (step S34 of the work machine operation control S2), so that the planting operation performed while covering the field with the sheet can be started.

  When the operator knows that an appropriate resumption position of the planting work performed while covering the farm field with the sheet is reached by the long sound notification of the notification buzzer 73 and the notification notification of the lighting of the notification lamp, the main shift operation lever 26 is set to the neutral position. The traveling of the traveling machine body 3 is stopped, the planting work machine 6 is lowered and the planting work machine 6 is driven to complete the turning of the multi-rice transplanter P, and the field is covered with a sheet from an appropriate position. Planting work can be resumed. When there is a switching operation for rotating the work implement operation cam 31 from the fixed position to the lowered position in step S173, the control unit 140 sets the notification preparation flag to OFF and activates the notification buzzer 73 and the notification lamp 70. And the travel distance L is changed to 0, and the process returns to the work implement control S1 (step S178).

  As described above, after the operator raises the planting work machine 6, the operator starts measuring the travel distance L when the steering handle 20 is steered beyond a predetermined turning angle, and the measured travel distance L is equal to the length of the turning distance L6. Then, the notification buzzer 73 emits a long sound and the notification lamp 70 is turned on, so that the operator can know the appropriate resuming position of the planting work performed while covering the field with the sheet after turning the field, Generation | occurrence | production of an uncovered part, an overlapping covering part, an unplanted part, and an overlapping planting part can be prevented.

  Further, when the travel distance L becomes equal to the notification distance L5 shorter than the turning distance L6 by a predetermined distance, the operator makes a short sound from the notification buzzer 73 and the notification lamp 70 blinks. Therefore, the operator performs while covering the farm field with the seat. It is possible to know that the appropriate resuming position of the planting work is near before the travel distance L reaches the turning distance L6, and immediately covers the farm field with the sheet after the notification of the long sound of the notification buzzer 73 and the notification of the lighting of the notification lamp 70. The planting work to be performed can be stopped. In addition, this allows the operator to reduce the uncovered part of the field by the sheet and the unplanted part of the seedling to increase the yield, and to reduce wasteful covering of the field by the sheet and duplicate planting of the seedling. Cost can be reduced.

  In any embodiment, the raising / lowering of the planting work machine 6 in the work start position notification control S3, the turning notification control S4, or the turning notification control S104 is detected by the work implement operation cam potentiometer 32. However, for example, the operation of the lift link mechanism 5 may be detected by the lift angle potentiometer 27, an infrared sensor or a contact switch provided separately, or the work machine operation switch upper 66 or the work machine operation. You may comprise so that it may detect indirectly by the operation time of the switch 67.

  In addition, the work machine operation switch upper 66 and the work machine operation switch lower 67 are indirectly operated by one work machine operation lever 21, but the work machine operation switch upper 66 and the work machine operation switch lower 67 are input panels. It is good also as a structure which arrange | positions on the surface of 23 and an operator can operate each directly.

  Further, the long sound notification by the notification buzzer 73 may be a continuous sound that does not stop automatically as time elapses, and the short sound notification may be a long sound notification or an intermittent sound that is repeated until the continuous sound notification. In addition, after the measurement of the travel distance L is started, the length of the travel distance L is the notification distance L1 or the headland distance L2 in the work start position notification control S3, the turning notification distance L3 or the turning distance L4 in the turning notification control S4. Alternatively, the intermittent buzzer 73 may be repeatedly generated until the turning notification distance L5 or the turning distance L6 in the turning notification control S104 is reached.

  In addition, the length of the travel distance L is assumed to continue to be intermittently generated by the notification buzzer 73 until the travel distance L reaches the headland distance L2 after reaching the notification distance L1 in the work start position notification control S3. May be notified so that the interval of the intermittent sound gradually decreases as the length of the travel distance L approaches the headland distance L2 when the distance is equal to or longer than the notification distance L1 and equal to or less than the headland distance L2. In addition, the length of the travel distance L is assumed to continue to be intermittently emitted by the notification buzzer 73 until the travel distance L reaches the turning distance L4 after the length of the travel distance L reaches the turning notification distance L3 in the turn notification control S4. When the turning notification distance L3 is greater than or equal to the turning distance L4, notification may be made so that the interval between the intermittent sounds gradually decreases as the length of the travel distance L approaches the turning distance L4. In addition, the length of the travel distance L is assumed to continue to be intermittently emitted by the notification buzzer 73 until the travel distance L reaches the turning distance L6 after the length of the travel distance L reaches the turning notification distance L5 in the turning notification control S104. When the turning notification distance L5 is greater than or equal to the turning distance L6, notification may be made so that the interval between the intermittent sounds gradually decreases as the length of the travel distance L approaches the turning distance L4. Further, instead of performing the notification by the notification lamp 70, the notification may be performed by performing a display for notification on a liquid crystal panel provided around the driving unit. Further, the control unit 40 and the control unit 140 may be formed by discrete circuits or may be integrally formed as a semiconductor integrated circuit element.

2 wheels (rear wheels)
3 traveling machine body 6 planting work machine 10 sheet storage part 21 work machine operating tool (work machine operating lever)
39 Travel distance measuring means (travel distance measuring mechanism)
40, 140 Control means (control unit)
47c Sheet cutting means (sheet cutter)
70 Notification means (notification lamp)
73 Notification means (notification buzzer)
P Multi rice transplanter L Traveling distance L3 Predetermined distance (turn notification distance)
L4 Predetermined distance (turning distance)

Claims (2)

A traveling machine body supported by wheels, a planting work machine supported by the traveling machine body so as to be movable up and down, and a sheet storage unit provided in the planting work machine and capable of storing a roll-shaped sheet covering a farm scene. And a control means, and the planting machine is a multi-rice transplanter that transplants seedlings onto the field from above the continuously fed sheet,
Mileage measuring means for measuring a mileage based on the amount of rotation of the wheel;
Sheet cutting means for cutting the sheet;
An informing means for informing based on a signal from the control means,
The control means starts measuring the travel distance by the travel distance measuring means by cutting the sheet by the sheet cutting means, and when the measured travel distance reaches a preset predetermined distance, the control means To work,
Multi rice transplanter characterized by that. A traveling machine body supported by wheels, a planting work machine supported by the traveling machine body so as to be movable up and down, and a sheet storage unit provided in the planting work machine and capable of storing a roll-shaped sheet covering a farm scene. And a control means, wherein the planting work machine is a multi-rice planting machine for transplanting seedlings from above the sheet that has been continuously fed to a field,
Mileage measuring means for measuring a mileage based on the amount of rotation of the wheel;
Sheet cutting means for cutting the sheet;
A work implement operating tool for raising or lowering the planting implement;
An informing means for informing based on a signal from the control means,
The control means starts measurement of the travel distance by the travel distance measurement means by the raising operation of the work implement operating tool in a state where the sheet is cut by the sheet cutting means, and the measured travel distance is preliminarily determined. When the set predetermined distance is reached, the notification means is activated.
Multi rice transplanter characterized by that.

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