JPH05244804A - Elevation controller of rice transplanter - Google Patents

Abstract

PURPOSE:To improve maneuverability when turning along a butt in the field. CONSTITUTION:The subject rice transplanter is designed so as to be allowed to vertically move by an elevation switch (SW1) only when a manual lever 16 is pointed to a planting position or a descent position. The rice transplanter is equipped with an elevation controller (A) for elevating a seedling-planting unit 2 by operating the above-mentioned elevation switch (SW1) when the seedling-planting unit 2 is lowered and in contact with the ground, with a descent controller (B) for lowering the seedling-planting unit 2 by operating the elevation switch (SW1) when the seedling-planting unit 2 is at the elevated position and with a clutch controller (C) for disconnecting the planting clutch 22 following actuation of the above-mentioned controller (A) and for connecting the above-mentioned planting clutch 22 by operating the elevation switch (SW1) after actuation of the above-mentioned descent controller (B).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling planting device which is vertically movable by a drive mechanism and is connected to a traveling machine body, and a planting position where the planting clutch is engaged and a descending position where the planting clutch is disengaged. A manipulating lever for the seedling planting device so that the seedling planting device can be switched between a neutral position and a forced raising position. The present invention relates to an elevation control device for a rice transplanter equipped with a switch.

[0002]

2. Description of the Related Art In the above-mentioned raising / lowering control device for a rice transplanter, conventionally, when the raising / lowering operation switch is operated while the seedling planting device is in the ground-down state, the seedling clutch is interlocked to operate and the seedling plant is also operated. The planting device is configured to be forcibly lifted, and when the raising / lowering operation switch is operated again, the seedling planting device is configured to be grounded and lowered, and the re-entry operation of the planting clutch can be performed by operating the separately provided clutch operation switch. Based on the above, it is considered that the device is configured to be set to the entry state.

[0003]

The structure described above is intended to reduce the operational burden on the operator when turning a headland in a field. That is, when turning a headland, the traveling speed of the traveling machine body is decelerated, the planting clutch is set to the disengaged state to raise the seedling planting device, and the steering handle is steered. Need, and
These operations must be performed in a short time, and especially for unskilled persons, the operation of the operation becomes troublesome.Therefore, the operation of raising the seedling planting device and the operation of disengaging the planting clutch are easy. This is intended to reduce the number of operations so that the two-position changeover switch can be operated. However, even in the above configuration, when the planting clutch is engaged again when the planting work is started again after the turning operation, it is necessary to operate a switch different from the elevating operation switch. There is a possibility that the raising and lowering operation switch may be operated again, which may cause an unexpected rise of the seedling planting device, and the operation may be 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 operation point of time when the seedling planting device lowering operation of the elevating operation switch is performed. However, in this way, even though the turning speed of the traveling aircraft varies depending on the skill level, the planted clutch is always engaged after a certain time has elapsed, so the elapsed time is set to be long. Therefore, a highly skilled operator may reduce the work efficiency, and conversely, if it is shortened, it may be difficult for an unskilled person to operate, and it may be difficult to employ in actual work. The present invention aims to eliminate the above-mentioned problems.

[0004]

A feature of the present invention is that the raising / lowering operation device of the rice transplanter described at the beginning only performs the raising / lowering operation when the artificial operation lever is operated to the planting position or the lowering position. The raising / lowering means for raising and lowering the seedling planting device by operating the raising / lowering operation switch in a state where the raising / lowering operation by the switch is allowed, and the seedling planting device is grounded and lowered. Lowering control means for lowering the seedling planting device based on the operation of the raising / lowering operation switch from the state of being in the position, disengaging the planting clutch with the operation of the raising control means, and the lowering control means. Clutch operating means for engaging and disengaging the planted clutch based on the operation of the elevating and lowering operation switch after the operation.

[0005]

[Function] Only when the artificial operation lever is in the planting position or in the lowered position, the raising / lowering operation switch can be moved up and down, and when the seedling planting device is in the raised position or in a neutral stop state in the middle of raising the position, etc. The seedling planting device does not move up and down unexpectedly in the unnecessary situation. Then, when turning the headland during planting work in the field, if the raising / lowering operation switch is operated before the turning, the planting clutch is automatically disengaged and the seedling planting device is forcibly raised. As a result, the operator can concentrate on operating the aircraft for traveling.
In addition, when the next planting work is started after turning,
When the raising / lowering operation switch is operated, the seedling planting device comes down to the ground and is ready for work. And from that state again
When the raising / lowering operation switch is operated, the planting clutch is operated and the planting work is started while the seedling planting device is lowered.

[0006]

As described above, the traveling safety can be ensured without accidentally raising or lowering the seedling planting device due to an operation error during road traveling or non-work traveling such as ridges. It can be set to an appropriate work state by repeatedly operating one switch, and there is little risk of operation mistakes and confusing operation, and the planted clutch is set to the engaged state at an appropriate timing based on the operator's intention. This made it possible to improve the operability.

[0007]

Embodiments will be described below with reference to the drawings. Figure 4
Shows a riding type rice transplanter. This rice transplanter is capable of moving up and down via a parallel four-link mechanism 1 at the rear part of the riding type traveling body and freely rolling left and right around the front-rear axis center.
Are connected. The seedling planting device 2 takes out the seedling planting table 5 that moves reciprocally laterally with a constant stroke in the planting transmission case 4 that also serves as a frame, and takes out the planting seedlings one by one from the lower end of the planting table 5 and plant them in the field. 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, and is configured to move up and down by expanding and contracting drive of a hydraulic cylinder 10 [an example of a drive mechanism]. The hydraulic control valve V for the hydraulic cylinder 10 is of an electromagnetic type, and the electromagnetic control valve V is configured to be driven and controlled by a control device 13 equipped with a microcomputer.
That is, as shown in FIG. 1, the potentiometer PM1 based on the swinging operation of the lifting lever 16 (an example of a manual operation lever) provided on the side of the driver's seat 15 of the machine body control unit 14.
Is configured to be able to artificially display the ascending operation, the descending operation, and the neutral stop state, and the push operation type elevating operation switch SW1 provided on the control panel 17 alternately displays the ascending operation and the descending operation. It is structured so that it can be taken out. Further, in the planting operation state, the control device 13 is provided with an elevating control means for maintaining the ground height of the seedling planting device 2 at a predetermined value in the form of a control program. That is, the center float 7 at the center of the left and right is supported swingably up and down around the rear fulcrum, and relative to the ground pressure fluctuation on the front side of the ground float 7 due to the change in ground height of the seedling planting device 2. 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 region, and the seedling planting device 2 is moved to a predetermined ground level. Keep it that way. Then, when the seedling planting device 2 is raised to the maximum raised position with the operation of the lifting operation switch SW1,
A limit switch SW2 that detects that the seedling planting device 2 has risen to a position near the maximum raised position is attached to the rear wheel fender portion 21 of the traveling machine body, and the midway portion of the link mechanism 1 abuts and is detected along with the raising operation. It is configured to operate, and the ascending side drive of the hydraulic cylinder 10 is automatically stopped based on the detection operation of the limit switch SW2.
Power from the traveling aircraft side is planted with clutch 22, transmission shaft 23
The planting clutch 22 is configured so as to be intermittently supplied to the seedling planting device 2 via the electric motor M with a reduction mechanism.
The actuator is configured to be turned on and off 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 as shown in FIG.
As shown in FIG. 3, the electric circuit configuration of the control device 13 is formed on the printed wiring board 24, and the wiring for the switches is connected to each switch through the multipolar connector 25. Further, on the printed wiring board 24, electric parts such as an on / off operation relay 26 and a fuse 27 for the electric motor M are mounted.
The raising / lowering lever 16 is configured to allow the raising / lowering operation by the raising / lowering operation switch SW1 only when the raising / lowering lever 16 is operated to the planting position or the lowering position, and the seedling planting device 2 is grounded and lowered. 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 a state where the seedling planting device 2 is in the raised position. The descending control means B to be operated and the planting clutch 22 are disengaged in accordance with the operation of the ascending control means A,
Further, there is provided clutch operating means C for actuating and engaging the planted clutch 22 based on the operation of the elevation operation switch SW1 after the operation of the descending 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 interlocking with the elevating lever 16 and the vehicle is in the raised position, the hydraulic control valve V is switched and controlled by the hydraulic cylinder 10 by the limit switch SW2. The seedling planting device 2 is raised to the maximum raised position while making a judgment in [Steps 1 and 2]. When it is in the neutral position, the hydraulic cylinder 10 is stopped to maintain that state [steps 3 and 4]. Then, when the raising / lowering lever 16 is in the planting position or the lowered position, when the raising / lowering operation switch SW1 is operated, the electric motor M is controlled to be switched to disengage the planting clutch 22 and the seedling planting device 2 is also operated.
To raise [Steps 5-8]. Next, when the raising / lowering operation switch SW1 is operated, the seedling planting device 2 is grounded and lowered, and the alarm lamp 28 for notifying the operator that the planting clutch 22 is not in the engaged state.
Is turned on [steps 9 to 11]. After that, when the raising / lowering operation switch SW1 is operated again, the electric motor M is switched and controlled so that the planting clutch 22 is engaged and operated to set the planting work state, and the alarm lamp 28 is turned off [steps 12 to 14]. .. The step 8 constitutes the ascending control means A, the step 11 constitutes the descending control means B, and the steps 7 and 13 constitute the clutch operating means C.

It should be noted that reference numerals are added to the claims for facilitating the comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of 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] Overall side view of rice transplanter

[Explanation of symbols]

 2 Seedling planting device 10 Drive mechanism 16 Manual lifting lever 22 Clutch with planting A Ascending control means B Descent control means C Clutch operating means SW1 Lifting operation switch

Claims (1)

[Claims] 1. A seedling planting device (2) is movably connected to a traveling machine body by a drive mechanism (10), and a planting clutch (2).
2) Planting position and planting clutch (2
2) The artificial raising / lowering lever (16) of the seedling planting device (2) is provided so that it can be freely switched between a lowered position, a neutral position, and a forcedly raised position where the seedling planting device (2) is grounded in the cut state. ) Forcibly raising and lowering to the ground, the lifting operation switch (SW
1) An elevation control device for a rice transplanter, which is provided with 1), wherein the elevation operation switch (SW) is operated only when the artificial operation lever (16) is operated to a planting position or a lowered position.
In addition to being configured to allow the lifting operation according to 1),
A raising control means (A) for raising the seedling planting device (2) by operating the elevating operation switch (SW1) while the seedling planting device (2) is grounding and descending, and the seedling planting device (2). ) Is in the raised position, the lowering control means (B) lowers the seedling planting device (2) based on the operation of the raising / lowering operation switch (SW1), and the operation of the raising control means (A). Clutch operation means for disengaging the planting clutch (22) and for energizing and operating the planting clutch (22) based on the operation of the elevating operation switch (SW1) after the operation of the lowering control means (B). C) and a lifting control device for a rice transplanter.