JP2018074948A - Riding type rice planting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow automatic lowering positions of a planting work machine and automatic coupling positions of a planting clutch in a left rotation time and right rotation time to coincide with each other as much as possible.SOLUTION: A riding type rice planting machine has a planting automatic control function of lowering a planting work machine 3 automatically when a travel distance from rotation start reaches a predetermined lowering start distance and coupling a planting clutch automatically when the travel distance from the rotation start reaches a predetermined planting start distance. A correction value C for correcting the lowering start distance and planting start distance can be set. A left rotation correction value Cl applied in a left rotation time and a right rotation correction value Cr applied in a right rotation time can be set individually.SELECTED DRAWING: Figure 10

Description

  The present invention relates to a riding type rice transplanter that automates a lowering operation of a planting work machine and an operation of engaging a planting clutch performed after a headland turns.

  When a turning start operation by the steering handle is determined, and the traveling distance from the turning start reaches a predetermined lowering starting distance, the planting work machine is automatically lowered, and further, the traveling distance from the turning start is set to a predetermined distance. A riding-type rice transplanter having a planting automatic control function that automatically enters a planting clutch when a planting start distance is reached is known (for example, see Patent Document 1). According to such a riding type rice transplanter, since the operation of lowering the planting work machine and the operation of engaging the planting clutch performed after the headland turning is unnecessary, the operation burden on the operator can be reduced.

JP 2015-29470 A

  However, since the travel distance during headland turning changes due to the field conditions (slip rate, etc.) and the influence of the operator's habits, the automatic lowering position of the planting work machine by the planting automatic control function and the automatic planting clutch Large errors may occur in the entry position. Therefore, it is conceivable to provide a correction value setting operation tool that can be operated by the operator and correct the descent start distance and planting start distance based on the operation of the correction value setting operation tool. Even if the distance is corrected, the automatic lowering position of the planting machine and the automatic engagement position of the planting clutch do not coincide between the left turn and the right turn, and the work accuracy may be lowered.

The present invention has been created in order to solve these problems in view of the above-described circumstances, and includes a traveling machine body that is steered in response to an operation of a steering handle, and an elevator that is raised and lowered at the rear part of the traveling machine body. A riding type rice transplanter comprising: a planting work machine that is freely connected and planting seedlings in a field in a lowered state; and a planting clutch that turns on / off power supply to the planting work machine, wherein the traveling It is determined that the vehicle body has started turning based on the travel distance detection means for detecting the travel distance of the airframe, the front wheel break angle detection means for detecting the front wheel break angle by the operation of the steering handle, and the front wheel break angle. A turning start judging means, a turning direction judging means for judging the turning direction of the airframe based on the operation direction of the steering handle, and a travel distance from the turning start reaches a predetermined lowering start distance. Automatic planting machine lowering means for automatically lowering the planting machine, and when the travel distance from the start of turning reaches a predetermined planting start distance, the planting clutch is automatically engaged. And a start distance correction value for setting a correction value for correcting at least one of the descending start distance and the planting start distance according to the operation of the correction value setting operation tool. Setting means, and the start distance correction value setting means can individually set a left turn correction value applied during a left turn and a right turn correction value applied during a right turn. It is characterized by that.
Further, the invention of claim 2 is the riding type rice transplanter according to claim 1, wherein automatic planting control in which the planting machine automatic lowering means and the planting clutch automatic entering means are effective is turned ON / OFF. An automatic planting switching operation tool that is turned off, and a setting mode switching operation tool that switches a setting mode that the start distance correction value setting means appears, and the start distance correction value setting means includes the automatic planting switching A left turn correction that allows a setting mode switching operation by the setting mode switching operation tool and sets at least the left turn correction value in accordance with the operation of the setting mode switching operation tool while the operation tool is ON. A value setting mode and a right turn correction value setting mode for setting the right turn correction value, and based on the operation of the correction value setting operation tool in the left turn correction value setting mode. Left turn Set the correction value, and sets the clockwise turning correction value based on the operation of the correction value setting operation member in the right turning correction value setting mode.
Further, the invention of claim 3 is the riding type rice transplanter according to claim 1, wherein automatic planting control in which the planting machine automatic lowering means and the planting clutch automatic engagement means are effective is turned ON. A planting automatic ON mode, a planting automatic OFF mode for turning off planting automatic control, and a mode switching operation tool for switching a setting mode displayed by the start distance correction value setting means, and the start distance correction value The setting means includes a left-turn correction value setting mode for setting at least the left-turn correction value and a right-turn correction value for setting the right-turn correction value according to the operation of the mode switching operation tool. A setting mode, and the left turn correction value is set based on the operation of the correction value setting operation tool in the left turn correction value setting mode, and the right turn correction value setting mode Correction value setting And sets the clockwise turning correction value on the basis of the operation of the operating tool.
According to a fourth aspect of the present invention, there is provided the riding type rice transplanter according to the third aspect, wherein the correction value setting operation tool is constituted by a volume of a push button switch, and the mode switching operation tool is the push button. It is characterized by comprising a pushbutton switch of a volume with a switch.

According to the first aspect of the present invention, the start distance correction value setting means individually sets the left turn correction value applied during the left turn and the right turn correction value applied during the right turn. Since it was made possible, the automatic lowering position of the planting work machine and the automatic engagement position of the planting clutch can be matched as much as possible when turning left and when turning right, thereby improving work accuracy.
According to the invention of claim 2, the correction value setting operation tool, the planting automatic switching operation tool, and the setting mode switching operation tool are provided, whereby the left turn correction value and the right turn correction value are provided. Individual setting operation with.
According to the invention of claim 3, by providing the correction value setting operation tool and the mode switching operation tool, it is possible to perform an individual setting operation of the left turn correction value and the right turn correction value. .
According to the invention of claim 4, by providing one volume with a push button switch, an individual setting operation of the left turn correction value and the right turn correction value can be performed.

1 is an overall left side view of a riding type rice transplanter according to an embodiment of the present invention. 1 is an overall plan view of a riding type rice transplanter according to an embodiment of the present invention. It is a principal part side view which shows the working machine operation cam of the riding type rice transplanter which concerns on one Embodiment of this invention. It is a figure which shows the driving | running part of the riding type rice transplanter which concerns on embodiment of this invention, (a) is a front view which shows an operation panel, (b) is a front view of a monitor panel, (c) is switches FIG. It is a block diagram which shows the control part of the riding type rice transplanter which concerns on one Embodiment of this invention. It is a flowchart which shows the main routine of the working machine control which the control part of the riding type rice transplanter concerning one Embodiment of this invention performs. It is a flowchart of the work machine operation control which the control part of the riding type rice transplanter which concerns on one Embodiment of this invention performs. It is operation | movement explanatory drawing of the planting automatic control which the control part of the riding type rice transplanter which concerns on one Embodiment of this invention performs. It is a flowchart of the planting automatic control which the control part of the riding type rice transplanter which concerns on one Embodiment of this invention performs. It is a flowchart of the planting automatic setting control which the control part of the riding type rice transplanter concerning one Embodiment of this invention performs. It is a front view which shows switches of the riding type rice transplanter which concerns on 2nd Embodiment of this invention. It is a block diagram which shows the control part of the riding type rice transplanter which concerns on 2nd Embodiment of this invention. It is a flowchart of the planting automatic setting control which the control part of the riding type rice transplanter which concerns on 2nd Embodiment of this invention performs. It is a front view which shows switches of the riding type rice transplanter which concerns on 3rd Embodiment of this invention. It is a block diagram which shows the control part of the riding type rice transplanter which concerns on 3rd Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In FIG. 1 and FIG. 2, reference numeral 1 denotes a traveling machine body of a riding type rice transplanter, and a planting work machine 3 is connected to a rear portion of the traveling machine body 1 via a lifting link mechanism 2. A lift cylinder 4 is interposed between the traveling machine body 1 and the planting work machine 3, and the planting work machine 3 is raised and lowered according to the hydraulic expansion and contraction operation of the lift cylinder 4.

  The planting machine 3 includes a seedling stage 5 on which mat seedlings are placed, a planting mechanism 6 for scraping seedlings from the seedling stage 5 and planting them on a farm field, a float 7 that slides down the rice field, and the like. The planting operation is performed with the planting power transmitted from the traveling machine body 1.

  An engine (not shown) and a transmission 8 are mounted on the front portion of the traveling machine body 1. The power output from the engine is shifted by the transmission 8 and transmitted to the planting work machine 3, the front wheel 9, and the rear wheel 10. The transmission 8 is provided with a planting clutch (not shown), and transmission of planting power to the planting machine 3 is switched on / off based on the switching of the planting clutch.

  As shown in FIG. 3, the traveling machine body 1 is provided with a working machine operation cam 11 linked to a planting clutch and a hydraulic control valve 4 a of the lift cylinder 4. The work implement operation cam 11 is operated to the “up”, “fixed”, “automatic (down)”, and “planting” positions based on the drive of the work implement operation cam motor 11a. In the “up” position, the planting machine 3 is raised (planting clutch is disengaged), and in the “fixed” position, the planting machine 3 is fixed at an arbitrary height (planting clutch is disengaged). In the “automatic (lowering)” position, the planting work machine 3 is lowered (the planting clutch is disengaged), and in the “planting” position, the planting clutch is engaged. In the “automatic (descent)” and “planting” positions, mechanical automatic elevation control based on detection of ground height by the sensing float is executed.

  As shown in FIGS. 1, 2, and 4, a driving unit 12 on which an operator rides is configured on the upper part of the traveling machine body 1, and the driving unit 12 includes a driver seat 13 on which the operator sits, An operation panel 15 including various operation tools and a monitor panel 14 is provided.

  As shown in FIGS. 4A and 4C, the operation panel 15 includes a steering handle 16 for steering the front wheels 9, an operation for raising and lowering the planting work machine 3, and an operation for turning on and off the planting clutch. Machine operation lever 17, main transmission lever 18 for shifting the traveling speed, work preparation switch 19 operated to be turned ON during planting work, planting automatic switch 20 (automatic planting switching) for ON / OFF operation of planting automatic control described later Operation tools such as an operation tool, a setting mode changeover switch 21 (setting mode switching operation tool) for switching a setting mode to be described later, and a correction value setting dial 22 (correction value setting operation tool) for setting a correction value to be described later are provided. Yes.

  Further, as shown in FIG. 4B, the monitor panel 14 includes a planting automatic lamp 23 indicating an ON / OFF state of planting automatic control, which will be described later, and an operation state of the planting work machine 3 (work machine operation Work machine operation lamps 24-27 indicating the position of the cam 11), left and right correction value display portions 28L, 28R indicating correction values to be described later, and the like are provided.

  As shown in FIG. 5, the traveling machine body 1 is provided with a control unit 30 that performs raising / lowering control of the planting work machine 3 and on / off control of the planting clutch. On the input side of the control unit 30, in addition to the work preparation switch 19, the planting automatic switch 20, the setting mode switch 21 and the correction value setting dial 22, the work machine operation for detecting the upper operation of the work machine operation lever 17 is detected. Switch (upper) 31, work implement operation switch (lower) 32 for detecting the lower operation of the work implement operation lever 17, work implement operation cam potentiometer 33 for detecting the position of the work implement operation cam 11, and planting work implement 3 The lift angle potentiometer 34 for detecting the elevation height of the vehicle, the rotation sensor 35 (travel distance detection means) for detecting the rotation (travel distance) of the rear wheel power transmission path, and the change in the turning angle of the front wheel 9 as the steering handle 16 is operated. A steering sensor 36 (front wheel turning angle detection means) for detecting is connected to the output side of the control unit 30, and the above-described working machine operation cam mode is connected to the output side of the control unit 30. 11a and the correction value display section 28L, 28R are connected.

  As shown in FIG. 6, the work machine control performed by the control unit 30 is a work machine operation for raising or lowering the planting work machine 3 or engaging / disengaging the planting clutch according to the operation of the work machine operating lever 17. Control (S1), planting automatic setting control (S2: start distance correction value setting means) for setting a correction value for planting automatic control, which will be described later, and ascent operation and planting of the planting work machine 3 at the start of headland turning A planting automatic control (S3: turning start determining means, turning) that automatically performs the operation of disengaging the attached clutch and automatically lowering the planting work machine 3 and engaging the planting clutch at the end of the headland turning. Direction judging means, planting work machine automatic lowering means, planting clutch automatic engagement means).

  As shown in FIG. 7, in the work machine operation control, first, the lower operation and the upper operation of the work machine operation lever 17 are determined (S101, S102). Here, when it is determined that the lower operation of the work implement operation lever 17 has been performed, it is determined whether the work preparation switch 19 is ON / OFF (S103). When the determination result is ON, the state of the planting work machine 3 is determined (S104 to S106). When the state of the planting work machine 3 is “up”, the work machine operation cam 11 is “fixed”. The position is switched to the position (S107), and the ascent operation of the planting work machine 3 is stopped. If the state of the planting work machine 3 is “automatic (down)”, it is determined whether or not the descent operation is stopped (grounding state) (S108). If the determination result is NO, On the other hand, when the determination result is YES, the work implement operation cam 11 is switched to the “planting” position to engage the planting clutch (S110). If the state of the planting work machine 3 is “fixed”, the work machine operation cam 11 is switched to the “automatic (down)” position (S111).

  Even when the determination result in step S103 is OFF, the state of the planting work machine 3 is determined (S112, S113). If the state of the planting work machine 3 is “rising”, the work machine operation cam 11 is switched to the “fixed” position (S107), and the ascent operation of the planting work machine 3 is stopped. When the state of the planting work machine 3 is “fixed”, the work machine operation cam 11 is switched to the “automatic (down)” position (S114).

  On the other hand, when it is determined in step S102 that the upper operation of the work machine operation lever 17 has been performed, the state of the planting work machine 3 is determined (S115 to S117). Here, the state of the planting work machine 3 is “fixed”. In the case of "", the work machine operation cam 11 is switched to the "up" position (S118), and the planting work machine 3 is raised. If the state of the planting work machine 3 is “planting”, the work machine operation cam 11 is switched to the “automatic (down)” position to disengage the planting clutch (S119). Further, when the state of the planting work machine 3 is “automatic (down)”, it is determined whether or not the planting work machine 3 is in the descent operation stop state (S120). The work implement operation cam 11 is switched to the “up” position (S118), and the planting work implement 3 is raised, while if the determination result is NO, the work implement operation cam 11 is switched to the “fixed” position (S121). Then, the lifting / lowering operation of the planting work machine 3 is stopped.

  In addition, when there is no upper operation or lower operation of the work machine operation lever 17, it is determined whether or not it is a waiting state for engaging the planting clutch (S122), and the planting work machine 3 is in the descent operation stop state. Whether or not (S123). When both the determination results are YES, the work implement operation cam 11 is switched to the “planting” position to engage the planting clutch (S124).

  As shown in FIG. 8, the planting automatic control determines the turning start operation by the steering handle 16, and when the travel distance L from the turning start operation (Ls) reaches the lowering start distance L1, the planting work machine When the travel distance L from the turning start operation reaches the planting start distance L2, the position of the work implement operation cam 11 is switched so that the planting clutch is automatically engaged. Control. However, the distance traveled during headland turning changes depending on the field conditions (slip rate, etc.) and the operator's habit, and the automatic lowering position of the planting work machine 3 by automatic planting control and the automatic engagement of the planting clutch Since a large error may occur in the position, the correction value C for correcting the descent start distance L1 and the planting start distance L2 is applied in the planting automatic control.

  The planting automatic setting control is a control for setting the correction value C according to the operation of the correction value setting dial 22. However, the automatic lowering position of the planting work machine 3 by the automatic planting control and the automatic engagement position of the planting clutch are greatly different between the left turn and the right turn due to the influence of the field conditions and the operator's habit. It can happen.

  Therefore, in the planting automatic setting control according to the embodiment of the present invention, the left turn correction value Cl applied during the left turn and the right turn correction value Cr applied during the right turn are individually set. Also, in the automatic planting control, the descent start distance L1 and the planting start distance L2 are corrected using the left turn correction value Cl when turning left, and the right turn correction value when turning right. The descending start distance L1 and the planting start distance L2 are corrected using Cr. Hereinafter, a specific processing procedure of the planting automatic control and the planting automatic setting control according to the embodiment for realizing the individual correction function according to the turning direction will be described with reference to FIGS. 9 and 10.

  As shown in FIG. 9, in the planting automatic control of this embodiment, first, it is determined whether or not the planting automatic mode (planting automatic switch 20) is ON (S301), and the determination result is NO. In this case, the process returns to the upper routine as it is. On the other hand, if the determination result is YES, it is determined whether or not the count flag is “ON” (S302). The count flag is a flag that is set to “ON” while the travel distance L is being counted (when the headland is turning). When the count flag is “OFF”, the start of headland turning is determined. That is, it is determined whether or not it is immediately after the front wheel turning angle becomes equal to or greater than a predetermined turning start determination value α (S303: turning start determination means), and whether or not a planting traveling more than a predetermined distance has occurred before that (S303: S304), if both the determination results are YES, it is determined that the headland turning is started. If it is determined that the headland turns are started, the turning direction is determined based on the steering operation direction (S305: turning direction determination means), and in the case of a left turn, the steering flag is set to “left”. (S306) In the case of a right turn, “right” is set in the steering flag (S307). Thereafter, the work machine operation cam 11 is switched to the “up” position to raise the planting work machine 3 and disengage the planting clutch (S308), and start counting the travel distance L (S309). After the flag is set to “ON” (S310), the process returns to the upper routine.

  On the other hand, if it is determined in step S302 that the count flag is “ON”, it is determined whether or not the work implement operating lever 17 has been operated (S311). In order to prioritize the operation of the planting work machine 3 and cancel the planting machine automatic lowering operation and the planting clutch automatic engagement operation, the travel distance L counter is cleared (S312), and the count flag is set to “OFF”. (S313) and the steering flag is set to “OFF” (S314).

  On the other hand, if the determination result in step S311 is NO, it is determined whether or not the steering flag is “right” (S315). If the determination result is YES, the travel distance L is (planting start distance L2 +). It is sequentially determined whether or not it is greater than or equal to the right turn correction value Cr) (S316) and whether or not the travel distance L is greater than or equal to (lowering start distance L1 + right turn correction value Cr) (S317). If it is determined in step S317 that the travel distance L is equal to or greater than (the lowering start distance L1 + the right turn correction value Cr), the work implement operation cam 11 is switched to the “down” position, and the planting work implement 3 (S318: Planting work machine automatic lowering means). If it is determined in step S316 that the travel distance L is equal to or greater than (planting start distance L2 + right turn correction value Cr), the work implement operation cam 11 is switched to the “planting” position and the planting clutch is operated. (S319: Planting clutch automatic engagement means), the travel distance L counter is cleared (S320), the count flag is set to “OFF” (S321), and the steering flag is set to “OFF” (S322).

  On the other hand, if the determination result in step S315 is NO, whether or not the travel distance L is equal to or greater than (planting start distance L2 + correction value Cl for left turn) (S323), and the travel distance L is (lower start distance L1 + left turn). It is sequentially determined whether or not it is equal to or greater than the reuse correction value Cl) (S324). In step S324, when it is determined that the travel distance L is equal to or greater than (the lowering start distance L1 + the left turn correction value Cl), the work implement operation cam 11 is switched to the “down” position, and the planting work implement 3 is moved. Lower (S325: planting work machine automatic lowering means). If it is determined in step S323 that the travel distance L is equal to or greater than (planting start distance L2 + left turn correction value Cl), the work implement operation cam 11 is switched to the “planting” position and the planting clutch is engaged. The travel distance L counter is cleared (S327), the count flag is set to “OFF” (S328), and the steering flag is set to “OFF” (S329).

  As shown in FIG. 10, in the planting automatic setting control, it is determined whether the work preparation switch 19 is ON (S201) and whether the planting automatic switch 20 is ON (S202). When both the determination results are YES, the correction value setting process after step S203 is executed. In other cases, the process returns to the upper routine as it is.

  In step S203, it is determined whether or not the correction value setting dial 22 has been operated. If the determination result is NO, it is determined whether or not the setting mode switch 21 has been operated (S204). If the determination result is NO, the process returns to the upper routine as it is, while if the determination result is YES, processing for sequentially shifting the setting mode is performed for each operation of the setting mode changeover switch 21 (S205 to S211). That is, when the setting mode changeover switch 21 is operated in a state where the setting mode is OFF mode (initial setting mode), the mode is shifted to the correction value setting mode for turning left and right, and the setting mode is the correction value setting mode for turning left and right. When the setting mode changeover switch 21 is operated in the state, the mode is shifted to the right turn correction value setting mode, and the setting mode changeover switch 21 is operated in the state where the setting mode is the right turn correction value setting mode. Shifts to the left turn correction value setting mode, and shifts to the OFF mode when the setting mode changeover switch 21 is operated while the setting mode is the left turn correction value setting mode.

  Although omitted in FIG. 10, it is preferable to include setting mode display means for displaying the setting mode. For example, in the left / right turn correction value setting mode, the left / right correction value display units 28L and 28R are blinked, and in the right turn correction value setting mode, only the right correction value display unit 28R is blinked, and the left turn correction is performed. In the value setting mode, only the left correction value display portion 28L blinks.

  On the other hand, if the determination result in step S203 is YES, it is determined whether the current setting mode is a left / right turn correction value setting mode, a right turn correction value setting mode, or a left turn correction value setting mode. (S212 to S214). If it is determined that the current setting mode is the left / right turn correction value setting mode, the left turn correction value Cl and the right turn correction value Cr are cleared (S215), and the correction value setting dial 22 is set. The dial value is set to the left turn correction value Cl and the right turn correction value Cr (S216). If it is determined that the current setting mode is the right turn correction value setting mode, the right turn correction value Cr is cleared (S217), and the dial value of the correction value setting dial 22 is turned right. Correction value Cr is set (S218). If it is determined that the current setting mode is the left turn correction value setting mode, the left turn correction value Cl is cleared (S219), and the dial value of the correction value setting dial 22 is changed to the left turn correction value. Set to Cl (S220). Although omitted in FIG. 10, the set left turn correction value Cl and right turn set value Cr are displayed on the correction value display sections 28L and 28R (for example, a 7-segment LED display module), respectively. The

  According to the present embodiment configured as described, in the planting automatic setting control, the left turn correction value Cl applied during left turn, the right turn correction value Cr applied during right turn, Can be set individually, so that the automatic lowering position of the planting work machine 3 and the automatic engagement position of the planting clutch in the automatic planting control are matched as much as possible when turning left and right, Work accuracy can be improved.

  In the planting automatic setting control of the present embodiment, the work preparation switch 19, the planting automatic switch 20, the setting mode changeover switch 21 and the correction value setting dial 22 are provided, so that the left turn correction value Cl and the right turn are controlled. Individual setting operation with the correction value Cr can be performed.

  Next, a riding type rice transplanter according to a second embodiment of the present invention will be described with reference to FIGS. However, about the common part with the said embodiment, description of the said embodiment is used by using the same code | symbol as the said embodiment.

  As shown in FIG.11 and FIG.12, the riding type rice transplanter of 2nd Embodiment has the mode changeover switch 51 (mode changeover operation tool) which serves as the planting automatic switch 20 and the setting mode changeover switch 21 of the said embodiment. In accordance with the operation of the mode switch 51, an automatic planting mode for turning on automatic planting control (planting automatic ON mode), a left turn correction value Cl, and a right turn correction value Cr are set. Left and right turn correction value setting mode, right turn correction value setting mode for setting right turn correction value Cr, left turn correction value setting mode for setting left turn correction value Cl, and planting The point which switches sequentially the OFF mode (planting automatic OFF mode) which turns OFF automatic control is different from the said embodiment. According to the second embodiment, the number of parts and the cost can be reduced based on the shared use of the operation tool. Hereinafter, the planting automatic setting control of the second embodiment will be described with reference to FIG.

  As shown in FIG. 13, in the planting automatic setting control of the second embodiment, it is determined whether the work preparation switch 19 is ON (S401). If the determination result is YES, step S402 and subsequent steps are performed. The correction value setting process is executed. In other cases, the process returns to the upper routine as it is.

  In step S402, it is determined whether or not the correction value setting dial 22 has been operated. If the determination result is NO, it is determined whether or not the mode switch 51 has been operated (S403). If the determination result is NO, the process returns to the upper routine as it is, while if the determination result is YES, processing for sequentially shifting the setting mode is performed for each operation of the mode switch 51 (S404 to S212). That is, when the mode changeover switch 51 is operated in the state where the setting mode is OFF mode (initial setting mode), the mode changeover switch 51 is shifted to the planting automatic mode, and the mode changeover switch 51 is set while the setting mode is in the planting automatic mode. When operated, the mode is shifted to the correction value setting mode for turning left and right, and when the mode changeover switch 51 is operated while the setting mode is the correction value setting mode for turning left and right, the correction value setting mode for turning right is set. When the mode changeover switch 51 is operated while the setting mode is the right turn correction value setting mode, the operation mode is changed to the left turn correction value setting mode, and the setting mode is the left turn correction value setting mode. When the mode switch 51 is operated in this state, the mode is shifted to the OFF mode.

  On the other hand, if the determination result in step S402 is YES, it is determined whether the current setting mode is a left / right turn correction value setting mode, a right turn correction value setting mode, or a left turn correction value setting mode. (S413-S415). If it is determined that the current setting mode is the left / right turn correction value setting mode, the left turn correction value Cl and the right turn correction value Cr are cleared (S416), and the correction value setting dial 22 is turned on. The dial value is set to the left turn correction value Cl and the right turn correction value Cr (S417). When it is determined that the current setting mode is the right turn correction value setting mode, the right turn correction value Cr is cleared (S418), and the dial value of the correction value setting dial 22 is turned right. Correction value Cr is set (S419). When it is determined that the current setting mode is the left turn correction value setting mode, the left turn correction value Cl is cleared (S420), and the dial value of the correction value setting dial 22 is changed to the left turn correction value. Set to Cl (S421).

  Next, a riding type rice transplanter according to a third embodiment of the present invention will be described with reference to FIGS. 14 and 15. However, about the common part with the said embodiment, description of the said embodiment is used by using the same code | symbol as the said embodiment.

  As shown in FIGS. 14 and 15, the riding type rice transplanter of the third embodiment includes a volume 52 with a push button switch that also serves as the mode changeover switch 51 and the correction value setting dial 22 of the second embodiment, and the push button switch The point that the correction value setting dial 22 is configured by the volume of the attached volume 52 and the mode changeover switch 51 is configured by the push button switch of the volume 52 with the push button switch is different from the above embodiment. According to such a third embodiment, the number of parts and the cost can be reduced based on further sharing of the operation tool.

  In addition, this invention is not limited to the said embodiment, A various deformation | transformation and change are possible within the range of the summary of this invention described in the claim. For example, in the embodiment, the switching state of the setting mode is displayed by blinking the left and right correction value display units 28L and 28R, but existing lamps (for example, the planting automatic lamp 23 and the left and right The setting mode switching state may be displayed only with the marker monitor lamps 53L, 53R). For example, in the OFF mode, the planting automatic lamp 23 is turned off, in the planting automatic mode, the planting automatic lamp 23 is lit, and in the left and right turning correction value setting mode, the planting automatic lamp 23 and the left and right marker monitor lamps are turned on. In the right turn correction value setting mode, the left marker monitor lamp 53L is turned off while the planting automatic lamp 23 and the right marker monitor lamp 53R are blinked, and in the left turn correction value setting mode. The right marker monitor lamp 53R is turned off while the planting automatic lamp 23 and the left marker monitor lamp 53L are blinking.

DESCRIPTION OF SYMBOLS 1 Traveling machine body 2 Lifting link mechanism 3 Planting work machine 16 Steering handle 17 Work machine operating lever 20 Planting automatic switch 21 Setting mode changeover switch 22 Correction value setting dial 28L Correction value display part 28R Correction value display part 30 Control part 35 Rotation Sensor 36 Steering sensor 51 Mode selector switch 52 Volume with push button

Claims (4)

A traveling aircraft that is steered in response to an operation of a steering handle;
A planting work machine that is connected to the rear part of the traveling machine body so as to be able to move up and down and plant seedlings in a field in a lowered state,
A riding type rice transplanter comprising: a planting clutch for turning on / off a power supply to the planting machine;
A travel distance detecting means for detecting a travel distance of the traveling machine body;
Front wheel break angle detection means for detecting a front wheel break angle by operation of the steering handle;
A turning start determining means for determining that the airframe of the airframe has started turning based on the front wheel turning angle;
A turning direction determining means for determining a turning direction of the airframe based on an operation direction of the steering handle;
A planting work machine automatic lowering means for automatically lowering the planting work machine when the travel distance from the start of turning reaches a predetermined lowering start distance;
A planting clutch automatic engagement means for automatically entering the planting clutch when the traveling distance from the start of turning reaches a predetermined planting start distance;
Start distance correction value setting means for setting a correction value for correcting at least one of the descent start distance and the planting start distance according to an operation of a correction value setting operation tool,
The start distance correction value setting means can individually set a left turn correction value applied during a left turn and a right turn correction value applied during a right turn. Riding type rice transplanter. A planting automatic switching operation tool for turning ON / OFF a planting automatic control in which the planting machine automatic lowering means and the planting clutch automatic entering means are effective;
A setting mode switching operation tool for switching a setting mode to be displayed by the start distance correction value setting means,
The start distance correction value setting means allows the setting mode switching operation tool to switch the setting mode in a state where the planting automatic switching operation tool is ON, and according to the operation of the setting mode switching operation tool, At least a left turn correction value setting mode for setting the left turn correction value and a right turn correction value setting mode for setting the right turn correction value, and the left turn correction value. The left turn correction value is set based on the operation of the correction value setting operation tool in the setting mode, and the right turn use is performed based on the operation of the correction value setting operation tool in the right turn correction value setting mode. The riding type rice transplanter according to claim 1, wherein a correction value is set. A planting automatic ON mode for turning on automatic planting control in which the planting machine automatic lowering means and the planting clutch automatic engagement means are effective; a planting automatic OFF mode for turning off planting automatic control; and A mode switching operation tool for switching a setting mode to be displayed by the starting distance correction value setting means;
The start distance correction value setting means includes a left turn correction value setting mode for setting at least the left turn correction value and a right for setting the right turn correction value according to an operation of the mode switching operation tool. A turning correction value setting mode, and the left turning correction value is set based on the operation of the correction value setting operation tool in the left turning correction value setting mode. The riding type rice transplanter according to claim 1, wherein the right turn correction value is set based on an operation of the correction value setting operation tool in a value setting mode. The correction value setting operation tool is composed of a volume with a push button switch,
The riding type rice transplanter according to claim 3, wherein the mode switching operation tool includes a push button switch of a volume with the push button switch.

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