JPH1070923A - Transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rice transplanter enabling its easy revolution in a butt in a state free from the forcible operation of a steering wheel and not lifting a seedling-planting device, even when the rice transplanter is wrongly operated. SOLUTION: This transplanter is provided with a lifting or lowering lever 16 at a place near to an operation seat 15, with a lifting or lowering operation switch SW1 for switching a seedling-planting device 2 into a forcibly lifting state or into a forcibly lowering and grounding state at a place near to a steering wheel, and further with a controller for permitting the lifting of the seedling- planting device 2 on the basis of the operation of the lifting or lowering switch SW1, only when it is detected with a potentiometer PM1 that the lifting or lowering lever 16 is set to a specific operation position, for disconnecting the planting clutch 22, when the planting device 2 is lifted with the lifting or lowering operation switch SW1, and further for maintaining the planting clutch 22 in a disconnected state, after the planting device is lowered by the operation of the lifting or lowering switch SW1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a planting position where a seedling planting device is connected to a traveling machine body by a drive mechanism so as to be able to move up and down freely, and a planting position where the planting clutch is engaged and a planting position where the planting clutch is disconnected. An artificial raising / lowering lever of the seedling planting device is provided so as to be freely switchable between a neutral position and a forced rising position, and the raising / lowering operation can be switched between a state where the seedling planting device is forcibly raised and a state where the planting device is lowered. The present invention relates to a rice transplanter lift control device provided with a switch.

[0002]

2. Description of the Related Art Conventionally, in the above-described raising and lowering control device of a rice transplanter, if the raising and lowering operation switch is operated in a state where the seedling transplanting device is descending and touching the ground, the planting clutch is interlocked and disengaged. When the planting device is forcibly raised and the raising and lowering operation switch is operated again, the seedling planting device is configured to be lowered to the ground, and the re-entry operation of the planting clutch is operated separately by operating the clutch operation switch. It was conceived that the system was configured to be set to the on state based on the condition.

[0003]

SUMMARY OF THE INVENTION The above structure is intended to reduce the operation burden on the operator when turning a headland in a field. That is, at the time of headland turning, the traveling speed of the traveling body is reduced, the planting clutch is set to the disengaged state, the seedling planting device is raised, and further, the steering operation of the steering handle is performed. Need, and
Since these operations must be performed in a short time, and especially for an unskilled person, the operation is troublesome, so that the raising operation of the seedling planting apparatus and the disengagement operation of the planting clutch can be easily performed. The operation is reduced by operating the two-position changeover switch. However, even in the above-described configuration, if the planting clutch is turned on again when the planting work is started after the turning operation, it is necessary to operate a switch different from the lifting / lowering operation switch. There is a risk that the raising and lowering operation switch will be operated again to cause adverse effects such as unexpected rise of the seedling planting apparatus, and the operation is confusing.
Therefore, as a method of solving such a drawback, a configuration is considered in which the planting clutch is automatically turned on and operated after a predetermined time has elapsed from the time when the seedling planting device is lowered by the raising and lowering operation switch. However, in this case, although the turning speed of the traveling machine body varies depending on the skill level, the planting clutch is always engaged after a certain period of time, so that the elapsed time is set to be long. Therefore, there is a possibility that the working efficiency may be reduced for a highly skilled operator, and conversely, if it is shortened, it may be difficult for an unskilled operator to operate, and it may be difficult to adopt the actual operation. An object of the present invention is to eliminate the above disadvantages.

[0004]

According to a feature of the present invention, in the raising and lowering control device for a rice transplanter described at the beginning, the raising and lowering operation is performed only when the artificial operation lever is operated to the planting position or the lowering position. A lift control unit configured to allow the raising and lowering operation by the switch, raising the seedling planting device by operating the raising and lowering operation switch in a state where the seedling planting device is in contact with the ground, and raising the seedling planting device. Lowering control means for lowering the seedling planting device based on the operation of the raising / lowering operation switch from the position, and disengaging the planting clutch with the operation of the raising control means; and Clutch operating means for engaging and operating the planting clutch based on the operation of the lifting operation switch after the operation.

[0005]

[Effect] The raising / lowering operation by the raising / lowering operation switch is possible only when the artificial operation lever is at the planting position or the lowering position, and when the seedling planting device is at the raising position or in the neutral stop state at the middle position of the raising. The seedling planting equipment does not move up and down unexpectedly in unnecessary situations. When the headland turns during the planting operation in the field, when the raising / lowering operation switch is operated just before the turning, the planting clutch is automatically disengaged, and the seedling planting device is forcibly raised. This allows the pilot to concentrate on running the aircraft.
Also, after turning, when starting the next planting work,
When the raising / lowering operation switch is operated, the seedling planter descends on the ground and enters a work preparation state. And again from that state
When the raising / lowering operation switch is operated, the planting clutch is turned on and the planting operation is started with the seedling planting device lowered.

[0006]

Therefore, during non-working running on a road or a ridge, the running safety can be ensured without accidentally raising and lowering the seedling planting device due to an operation error. , It is possible to set an appropriate working state by repeatedly operating one switch, there is little risk of operation error and operation confusing, and at the appropriate timing based on the driver's intention, the setting is made to put the planting clutch on As a result, operability has been improved.

[0007]

Embodiments will be described below with reference to the drawings. FIG.
Shows a riding rice transplanter. The rice transplanter can be raised and lowered at the rear of the riding type traveling body via a parallel four-link mechanism 1 and can freely roll left and right around the longitudinal axis.
Are connected. The seedling planting apparatus 2 takes out seedlings 5 and seedlings for planting, one plant at a time, from the lower end of the seedling rest 5 in the planting transmission case 4 which also serves as a frame, and reciprocates in a constant stroke. A plurality of planting mechanisms 6,
It is provided with three grounding floats 7 and the like arranged in parallel on the left and right sides, and is configured to move up and down by expansion and contraction driving of a hydraulic cylinder 10 (an example of a driving mechanism). The hydraulic control valve V for the hydraulic cylinder 10 is configured to be of an electromagnetic type, and the electromagnetic control valve V is configured to be driven and controlled by a control device 13 including a microcomputer.
That is, as shown in FIG. 1, the potentiometer PM1 based on the swinging operation of the elevating lever 16 (an example of an artificially operated lever) disposed on the side of the driver's seat 15 of the aircraft control unit 14.
, An ascending operation, a descending operation, and a neutral stop state can be artificially made to appear by the output of the push button operation type switch SW1 provided on the control panel 17 so that the ascending operation and the descending operation are alternately performed. It is configured so that it can be output. In the planting operation state, the control device 13 is provided with a lift control means for maintaining the height of the seedling plant 2 above the ground at a predetermined value in a control program form. That is, the ground float 7 at the center in the left and right directions is supported so as to be able to swing up and down around the rear fulcrum, and the relative position of the ground float 7 on the front side of the ground float 7 with the change of the ground height of the seedling planting device 2 is changed. The vertical movement is detected by the potentiometer PM2, and the control device 13 controls the electromagnetic control valve V of the hydraulic cylinder 10 so that the output value of the potentiometer PM2 falls within a predetermined setting range, and moves the seedling planting device 2 to a predetermined ground height. Keep it up. Then, when the seedling planting apparatus 2 is moved up to the maximum ascending position in accordance with the operation of the elevation operation switch SW1,
A limit switch SW2 for detecting that the seedling planting device 2 has risen to near the maximum ascending position is attached to the rear wheel fender portion 21 of the traveling machine body. The hydraulic cylinder 10 is configured to operate automatically and to automatically stop the upward drive of the hydraulic cylinder 10 based on the detection operation of the limit switch SW2.
The power from the traveling machine body is used for planting clutch 22 and transmission shaft 23.
The planting clutch 22 is configured to be intermittently supplied to the seedling planting device 2 via an electric motor M with a speed reduction mechanism.
An on / off operation is performed by [an example of an actuator]. The wiring connection between the control device 13 and each of the operation switches and actuators as described above is shown in FIG.
As shown in (1), the electric circuit configuration in the control device 13 is formed on the printed wiring board 24, and the wiring connection to the switches is connected to each switch via the multi-pole connector 25. Further, on the printed wiring board 24, electric components such as a relay 26 for turning on and off the electric motor M and a fuse 27 are also mounted.
Only when the raising / lowering lever 16 is operated to the planting position or the lowering position, the raising / lowering operation by the raising / lowering operation switch SW1 is configured to be allowed. The raising control means A for raising the seedling planting device 2 by operating the raising / lowering operation switch SW1, and lowering the seedling planting device 2 based on the operation of the raising / lowering operation switch SW1 from the state where the seedling planting device 2 is in the raising position. The lowering control means B to be actuated and the planting clutch 22 to be disengaged with the operation of the ascending control means A,
Further, there is provided a clutch operating means C for engaging and operating the planting clutch 22 based on the operation of the raising / lowering operation switch SW1 after the operation of the lowering control means B. Each of the above means is provided in the control device 13 in the form of a control program, and the control device 13 executes control as follows. As shown in FIG. 3, when the zone is determined from the output level of the potentiometer PM1 linked to the elevating lever 16 and it is in the ascending position, the hydraulic control valve V is switched and controlled by the hydraulic cylinder 10 to detect by the limit switch SW2. The seedling planting apparatus 2 is moved up to the maximum ascending position while judging by [1] and [2]. If the hydraulic cylinder 10 is at the neutral position, the hydraulic cylinder 10 is stopped to maintain that state [steps 3 and 4]. When the raising / lowering operation switch SW1 is operated when the raising / lowering lever 16 is in the planting position or the lowering position, the electric motor M is switched to control the planting clutch 22 to be disengaged and the seedling planting device 2 to be operated.
Is raised [Steps 5 to 8]. Next, when the raising / lowering operation switch SW1 is operated, the seedling planting apparatus 2 is operated to lower the ground, and an alarm lamp 28 for notifying the operator that the planting clutch 22 is not yet in the on state.
Is turned on [steps 9 to 11]. Thereafter, when the raising / lowering operation switch SW1 is operated again, the electric motor M is controlled to be switched, the planting clutch 22 is engaged and operated, the planting work state is set, and the alarm lamp 28 is turned off [steps 12 to 14]. . Step 8 constitutes the upward control means A, step 11 constitutes the downward control means B, and steps 7 and 13 constitute the clutch operating means C.

[0008] In the claims, reference numerals are written to facilitate comparison with the drawings, but the present invention is not limited to the configuration of the attached drawings by the entry.

[Brief description of the drawings]

FIG. 1 is a control block diagram.

FIG. 2 is a plan view showing a wiring connection state;

FIG. 3 is a control flowchart.

FIG. 4 is an overall side view of the rice transplanter.

[Explanation of symbols]

 2 Seedling planting device 10 Drive mechanism 16 Artificial lifting lever 22 Planting clutch A Ascent control means B Descending control means C Clutch operating means SW1 Elevating operation switch

[Procedure amendment]

[Submission date] September 24, 1997

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction contents]

[Document Name] Statement

[Title of the Invention] Transplanter

[Claims]

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a working machine which is connected to a traveling machine body by a drive mechanism so as to be able to move up and down by a driving mechanism, and is switchable between an on state for driving the working apparatus and a cutoff state for stopping the working apparatus. A transplanting machine equipped with a work clutch and provided with a lifting / lowering operation tool for raising / lowering the working device to an arbitrary height and controlling the on / off of the work clutch, specifically, by operating an operation tool separate from the lifting / lowering operation tool The present invention relates to a technique for forcibly lifting and lowering a working device.

[0002]

2. Description of the Related Art In a conventional transplanter, a lifting / lowering operating tool is configured as a lever type, and a working device can be raised and lowered, or a working clutch can be turned on and off by setting an operating position. In addition, a switch for forcibly raising the working device is provided separately from the lifting / lowering operating tool. When the working device is raised by operating this switch, the work clutch can be disengaged in conjunction with the lifting. Was thought.

[0003]

The above-described switch effectively functions as a means for reducing the operation burden on the operator when turning the headland in the field. That is, in the conventional transplanting machine, at the time of headland turning, the operator operates the shift lever or the like to reduce the traveling speed of the traveling machine body, and operates the lifting / lowering operating tool to disengage the work clutch. It is necessary to perform setting and raising of the working device, and furthermore, to perform the alignment by operating the steering handle in parallel with these operations, which makes the operator, especially an unskilled person, feel troublesome. I was Therefore, when the above switch is provided, the trouble of operating the lifting operation tool to a predetermined position is eliminated, and the trouble of the operation is eliminated.

However, in the case of raising and lowering the working device by operating the switch, for example, even when the switch is erroneously operated while traveling with the working device being raised to a relatively low height by the lifting and lowering operation tool, the operation is performed. There is room for improvement, as the device may rise and deteriorate the balance of the aircraft.

SUMMARY OF THE INVENTION An object of the present invention is to provide a transplanting machine that can easily turn a headland while operating a steering handle without difficulty, and that does not raise the working device even if there is an erroneous operation. .

[0006]

According to a first feature of the present invention (claim 1), in the transplanter described at the beginning, the lifting / lowering operating tool is provided near a driver's seat, and A sensor for electrically measuring an operation position; a control unit for controlling the drive mechanism by determining an operation position of the lifting / lowering operation tool based on a signal from the sensor; and Forcibly raising the working device accompanied by switching to the state, lowering the contact of the working device while maintaining the disengaged state of the work clutch, and engaging the work clutch while the working device is in the lowered contact state. A forcible lifting / lowering operating tool is provided near the steering handle, and only when it is determined that the lifting / lowering operating tool is set to a specific operating position by a signal from the sensor. The control operation of the control means is set so as to allow the lifting / lowering control of the working device and the switching control of the work clutch based on the operation of the control lifting / lowering operating tool, and the operation and effect are as follows. is there.

[0007] A second feature of the present invention (claim 2) is that, in claim 1, the lifting and lowering operation tool is configured as a lever type that is swingably operated, and the sensor is configured as a potentiometer. The operation and effects are as follows.

According to the first feature, when the work clutch is disengaged and the working device is raised in the headland turning, the hand holding the steering handle is slightly moved to operate the forced lifting operation tool. After that, even when the working device is lowered on the ground, the hand holding the steering handle is slightly moved to operate the forced lifting operation tool. Further, when it is not necessary to raise and lower the working device by the forced lifting operation device, the lifting device is set to an operation position other than the specific operation position, so that the operation device is not raised and lowered even if there is an erroneous operation, It is not necessary to provide dedicated switches for determining whether the lifting operation tool is set at a specific position.

In other words, as compared with the case of operating the lifting / lowering operating tool in the vicinity of the driver's seat, when operating the forcible lifting / lowering operating tool to raise / lower the working device, the operator uses the hand holding the steering handle. The movement distance and time are shortened, and the time that can be devoted to steering wheel operation is lengthened, enabling high-precision alignment.The selection of the operation position of the lifting / lowering operation tool prevents the lifting / lowering of the work equipment due to erroneous operation. In addition, the sensor for the elevating operation tool can be used for the configuration for eliminating the erroneous operation.

According to the second feature, since the sensor is constituted by a potentiometer, the number of signal lines for transmitting signals from the sensor is reduced as compared with a device using a rotary encoder or a large number of switches, and the cost is reduced. It only needs to be.

[Effects of the Invention] Accordingly, when turning the headland, almost no need to look at the hand, so that sufficient operation time is required for operating the steering wheel, and not only can the operation be performed accurately based on the visual sense, but also the operation required for the operation can be performed. The transplanting operation can be performed while having sufficient time for the operation, and the transplanting machine, which does not raise the working device even if there is an erroneous operation, is configured at a low cost without increasing the number of parts. (Claim 1). In addition, this configuration can be obtained simply and at low cost (claim 2).

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 4 shows a riding rice transplanter as a transplanter. This rice transplanter is constructed by connecting a seedling planting device 2 (an example of a working device) to a rear part of a riding type traveling machine body so as to be able to move up and down via a parallel quadruple link mechanism 1 and to freely roll left and right around a longitudinal axis. is there. The seedling planting apparatus 2 takes out seedlings 5 and seedlings for planting, one plant at a time, from the lower end of the seedling rest 5 in the planting transmission case 4 which also serves as a frame, and reciprocates in a constant stroke. It is provided with a plurality of planting mechanisms 6, three ground floats 7 arranged in parallel on the left and right, and the like, and is configured to move up and down by expansion and contraction driving of a hydraulic cylinder 10 (an example of a driving mechanism). The hydraulic control valve V for the hydraulic cylinder 10 is configured to be of an electromagnetic type, and the electromagnetic control valve V is configured to be driven and controlled by a control device 13 (an example of control means) having a microcomputer. That is, as shown in FIG.
4, the output of the potentiometer PM1 [an example of a sensor] based on the swinging operation of the elevating lever 16 [an example of the elevating operation tool] arranged on the side of the driver's seat 15 artificially raises, lowers and neutrally stops. And a control panel 17 near the steering handle.
The lifting operation and the lowering operation can be realized by the push-operation type lifting operation switch SW1 (an example of a compulsory lifting operation tool) provided in the above.

In the planting operation state, the elevation control means for maintaining the height of the seedling plant 2 above the ground at a predetermined value is provided by the control device 13.
Is provided in the form of a control program. That is, the ground float 7 at the center in the left and right directions is supported so as to be able to swing up and down around the rear fulcrum, and the relative position of the ground float 7 on the front side of the ground float 7 with the change of the ground height of the seedling planting device 2 is changed. The vertical movement is detected by the potentiometer PM2, and the control device 13 controls the electromagnetic control valve V of the hydraulic cylinder 10 so that the output value of the potentiometer PM2 falls within a predetermined setting range, and moves the seedling planting device 2 to a predetermined ground height. Keep it up. When the raising and lowering operation switch SW1 is actuated to move the seedling planting device 2 up to the maximum rising position, the seedling planting device 2 travels through the limit switch SW2 which detects that the seedling planting device 2 has risen to near the maximum rising position. Attached to the rear wheel fender portion 21 of the fuselage, the middle portion of the link mechanism 1 is brought into contact with the ascending operation to detect and operate.
The ascending-side drive of the hydraulic cylinder 10 is automatically stopped based on the detection operation of the limit switch SW2. The power from the traveling machine body is configured to be intermittently supplied to the seedling planting device 2 via the planting clutch 22 (an example of a work clutch) and a transmission shaft 23, and the planting clutch 2 is provided.
Reference numeral 2 denotes an on / off operation by an electric motor M with a speed reduction mechanism.

As shown in FIG. 2, the wiring connection between the control device 13 and each of the operation switches and actuators as described above is performed by forming an electric circuit configuration in the control device 13 on a printed wiring board 24, The connection of the wiring to the switches is configured to be connected to each switch through a multi-pole connector 25. Further, on the printed wiring board 24, electric components such as a relay 26 for turning on and off the electric motor M and a fuse 27 are also mounted. Only when the raising / lowering lever 16 is operated to the planting position or the lowering position, the raising / lowering operation by the raising / lowering operation switch SW1 is configured to be allowed. The raising control means A for raising the seedling planting device 2 by operating the raising / lowering operation switch SW1, and lowering the seedling planting device 2 based on the operation of the raising / lowering operation switch SW1 from the state where the seedling planting device 2 is in the raising position. The lowering control means B to be actuated and the planting clutch 22 are disengaged with the operation of the raising control means A, and the planting clutch 22 is operated based on the operation of the raising / lowering operation switch SW1 after the lowering control means B is operated. And a clutch operating means C for engaging the clutch 22. Each of the above means is provided in the control device 13 in the form of a control program, and the control device 13 executes control as follows.

As shown in FIG. 3, when the zone is determined from the output level of the potentiometer PM1 linked to the elevating lever 16 and it is in the ascending position, the hydraulic control valve V is switched and controlled by the hydraulic cylinder 10 to switch the limit switch. The seedling planting device 2 is raised to the maximum raising position while judging by the detection by the SW2 [Steps 1 and 2]. If the hydraulic cylinder 10 is at the neutral position, the hydraulic cylinder 10 is stopped to maintain that state [steps 3 and 4]. When the raising / lowering operation switch SW1 is operated when the raising / lowering lever 16 is at the planting position or the lowering position, the electric motor M is switched to control the planting clutch 22 to be disengaged and the seedling planting device 2 to be operated. (Steps 5 to 5)
8]. Next, when the lifting operation switch SW1 is operated,
The seedling planting apparatus 2 is operated to descend on the ground, and an alarm lamp 28 for notifying the operator that the planting clutch 22 is not yet engaged is turned on [Steps 9-1.
1]. Thereafter, when the raising / lowering operation switch SW1 is operated again, the electric motor M is controlled to be switched, the planting clutch 22 is engaged and operated, the planting work state is set, and the alarm lamp 28 is turned off [steps 12 to 14]. . Step 8 constitutes the upward control means A, step 11 constitutes the downward control means B, and steps 7 and 13 constitute the clutch operating means C.

[0016] In the claims, reference numerals are provided for facilitating comparison with the drawings, but the present invention is not limited to the configuration of the attached drawings.

[Brief description of the drawings]

FIG. 1 is a control block diagram.

FIG. 2 is a plan view showing a wiring connection state;

FIG. 3 is a control flowchart.

FIG. 4 is an overall side view of the rice transplanter.

[Description of Signs] 2 Working device 10 Drive mechanism 13 Control means 15 Driver seat 16 Lifting operation tool 22 Work clutch PM1 Potentiometer SW1 Forced lifting operation tool

Claims (2)

[Claims] An operating device (2) is connected to a traveling machine body by a drive mechanism (10) so as to be able to move up and down, and a cut-in state for driving the operating device (2) and a stop for stopping the operating device (2). A lifting / lowering operating tool (1) that includes a work clutch (22) that can be switched between a state and a state, and that performs lifting and lowering of the working device (2) to an arbitrary height and on / off control of the work clutch (22)
6) a transplanter comprising: the lifting operation tool (16) provided at a position near a driver's seat (15); and a sensor for electrically measuring the operation position of the lifting operation tool (16). A control means (13) for controlling the drive mechanism (10) by determining an operation position of the lifting / lowering operation tool (16) based on a signal from the sensor, and disengaging the work clutch (22) from the engaged state. The working device (2) is forcibly raised with the switching to the state, the working device (2) is maintained in the disengaged state of the working clutch (22), and the working device (2) is lowered in the ground contact state. A forcible lifting / lowering operation tool (SW1) for engaging and disengaging the work clutch (22) in a certain state is provided at a position near the steering handle, and a signal from the sensor causes the lifting / lowering operation tool (16) to be in a specific position. Operation position The lifting control of the working device (2) based on the operation of the forcible lifting / lowering operating tool (SW1) and the switching control of the working clutch (22) are permitted only when it is determined that the setting is set to the setting position. An implanter in which the control operation of the control means (13) is set. 2. The transplanter according to claim 1, wherein the lifting / lowering operation tool (16) is configured as a lever type that can be swingably operated, and the sensor is configured as a potentiometer (PM1).