JP2927761B2 - Transplant machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a left and right drawing marker which is connected to a traveling machine so that it can be driven up and down freely, and which can be switched between an operating posture projecting left and right outward and a retracted posture retracting inward. A transplanting machine having a work clutch that can be switched between an on state for driving the working device and a disengaged state for stopping the working device, and a lifting / lowering operating tool that moves the working device up and down to an arbitrary height. TECHNICAL FIELD The present invention relates to a technology for easily performing an operation required at the time of headland turning.

[0002]

2. Description of the Related Art In a conventional transplanting machine, a lifting / lowering operating tool is configured as a lever type, and can perform lifting / lowering control of a working device and on / off control of a working clutch by setting an operating position. It has also been considered to provide a switch for forcibly lifting and lowering the working device separately from the lifting operation tool.

[0003]

SUMMARY OF THE INVENTION The above-mentioned switch can improve the steering operability when turning a headland in a field. That is, in the conventional transplanting machine, when turning the headland, the work clutch is disengaged and the working device is raised, and in parallel with these operations, the steering device is operated to perform alignment, and the working device is lowered.
When the working device reaches the position where the transplant is started, the work clutch is engaged and operated, and further, the drawing marker to be set to the working posture is selected and the work is restarted. In some cases, the traveling speed is reduced before the operation is performed, and the operation is troublesome. Especially,
The operation mode is difficult for an unskilled person to perform. When the above switch is provided, the trouble of operating the elevating operation tool to a predetermined position is omitted, and the troublesome operation is reduced.

Further, assuming that an operating tool for controlling the on / off control of the working clutch and an operating tool for controlling the switching of the drawing marker to the operating position are provided, the above-described switches are provided to easily raise and lower the working device. However, there is room for improvement in that it requires time and effort to separately control the on / off control of the work clutch and switch to the operating position of the drawing marker when turning the headland, since it is necessary to operate each operation tool separately. .
In particular, when a plurality of operating tools are provided, unnecessary control may be performed by erroneously operating the operating tools during non-operation, and there is still room for improvement in this point.

SUMMARY OF THE INVENTION It is an object of the present invention to rationally configure a transplanting machine which enables easy operation by easily performing lifting / lowering control of a working device, control of a drawing marker, and control of a work clutch during headland turning. Is to do.

[0006]

SUMMARY OF THE INVENTION The present invention is characterized in that, in the transplanting machine described at the beginning, only when the lifting / lowering operating tool is set to a specific position, the working device is forcibly raised and the ground is lowered. and switching between a state for the selection of those switching to effect orientation of the left and right of the drawing markers, there a cut operation of the working clutch that it includes a row cormorants forced lifting operation device, its functions and effects the following It is as follows.

[Effect] According to the above feature, the lifting operation during non-working time outside the field
To a desired height during maintenance and maintenance
The descent can be performed freely using a lifting operation tool. So
That can be performed quickly during turning, etc. during field work.
Is required, that is, lifting and lowering of the work equipment
Selection of a drawing marker to be switched to the action posture,
When the clutch is disengaged, the lifting / lowering operating tool is
Only when the setting is performed, the operation can be performed by the forced lifting operation tool, so that the operation of switching the operation tool is eliminated and the operation is simplified as compared with the case of operating each operation with a different operation tool, and these operations are performed by the forced lifting operation It becomes simpler operation because again and again thus can be performed. In addition, when the lifting / lowering operating tool is set at a position deviating from a specific position during non-work, even if the forcible lifting / lowering operating tool is erroneously operated, the lifting / lowering of the working device,
Neither selection of the drawing marker nor switching of the work clutch is performed, so that unnecessary operations can be avoided. In particular, since the three different operations described above can be performed by a single forcible lifting / lowering operation tool, it is not necessary to specially provide a lever or the like corresponding to each of the three operations, thereby suppressing an increase in the number of parts.

[Effect of the Invention] Accordingly, the working device can be moved to an arbitrary height during non-working time.
With perform the lifting operation, and the elevation control of the working device at the time of headland turning, and control of drawing marker, enabling effortless work to go to convenience and control of the work the clutch, also, most of the time of the headland turning The transplanter, which allows accurate steering operations based on vision and the operations required for work with sufficient time, can be avoided without having to look at the hand, and unnecessary operation due to erroneous operation can be avoided. It was rationally constructed without increasing the score. Further, in the present invention, there is also an effect that even if the system for performing the forcible lifting and lowering breaks down, it is possible to perform the conventional lifting and lowering control using the lifting and lowering operation tool.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 3 shows a riding type 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 device 2 is supported by a planting transmission case 4 that also serves as a frame so as to be rotatable around a longitudinal axis Y.
In the planting transmission case 4, a seedling rest 5 that reciprocates sideways with a constant stroke, a plurality of planting mechanisms 6 that take out seedlings for planting one by one from the lower end of the seedling rest 5 and plant the seedlings in a field.
It is provided with three ground floats 7 and the like arranged in parallel on the left and right sides, and is configured to move up and down by the expansion and contraction drive of the hydraulic cylinder 10.

As shown in FIG. 1, a 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 having a microcomputer. It is. That is, the lifting lever 1 provided on the side of the driver's seat 15 of the aircraft
6 [An example of the lifting / lowering operation tool] is configured such that the output of the potentiometer PM1 based on the swinging operation of the lifting / lowering operation can artificially show the ascending operation, the descending operation, and the neutral stop state. The lifting switch SW1 (an example of a compulsory lifting operation tool) is configured so that the raising operation and the lowering operation can alternately appear.

In the planting operation state, the elevation control means A for maintaining the height of the seedling plant 2 above the ground at a predetermined value is controlled by the control device 1.
3 is provided in the form of a control program. That is, the grounding float 7 at the center of the fuselage is supported so as to be able to swing up and down around the rear fulcrum, and relative to the grounding float on the front side of the grounding float 7 due to the change of the ground height of the seedling planting device 2. Vertical movement is detected by potentiometer PM2,
The controller 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 area, and maintains the seedling planting apparatus 2 at a predetermined ground height. When the raising and lowering switch SW1 is actuated to move the seedling planting apparatus 2 up to the maximum ascending position, the limit switch SW2 for detecting that the seedling planting apparatus 2 has risen to near the maximum ascending position is moved to the traveling machine Is mounted on the rear wheel fender portion 21 so that a middle portion of the link mechanism 1 comes into contact with the rising operation to perform a detection operation. Based on the detection operation of the limit switch SW2, the hydraulic cylinder 10 is driven upward. Is automatically stopped.

The power from the traveling machine body is used to transfer the planting clutch 21.
[One example of a work clutch] is configured to be intermittently supplied to the seedling planting device 2 via a transmission shaft 22, and the planting clutch 21 is configured to be turned on and off by an electric motor M with a speed reduction mechanism. On both the left and right sides of the seedling planting device 2, line drawing markers 23R and 23L that can be switched between an action posture for projecting laterally outward to draw a travel target line in an unplanted area and a storage posture for retreating to the inside of the machine are provided. As shown in FIG. 2, the drawing markers 23R and 23L are oscillated and biased by a spring 24 toward the action posture, and the relative positions of the rear link 1a are changed when the seedling planting device 2 is raised. Accordingly, the operation wire 26 is pulled by the roller 25 so as to be in a retired posture. Lock mechanisms 27R and 27L are provided for automatically retaining and holding the posture in the retired posture, respectively.
When the seedling planting apparatus 2 is lowered in a state where the lock holding of the R and 27L is selectively released, the drawing marker on the selected side is set to the action posture. Electromagnetic solenoids 28R, 28L are provided for sequentially releasing the lock mechanisms 27R, 27L alternately left and right.

The lifting operation switch SW1 is a seedling planting device.
2 and the control of the planting clutch 21 and the left and right lines
The pulling markers 23R and 23L can be controlled.
ing. That is, a first operation mode determining means B for determining an operation mode of the raising and lowering operation switch SW1 at the time of the raising operation of the seedling planting apparatus 2 is provided. As the device 2 is raised, the lock state of the lock mechanisms 27R and 27L is switched between left and right sequentially and the state where the operation is restrained is switched. In addition, the lifting operation switch S
A second control mode determining means C for determining the operation mode during seedling planting apparatus 2 falling operation W1, based on the determination result of the second operation form determining means C, lowering operation of the seedling planting apparatus 2 Accordingly, the state can be switched between a state in which the planting clutch 21 is automatically engaged and a state in which the automatic clutch engaging operation is restrained. The operation mode discriminating means B and C are provided in the control device 13 in the form of a control program, and the control device 13 performs control as follows.

FIGS. 4 and 5 show control flowcharts in the planting operation. When the raising / lowering operation switch SW1 is operated in a state where the raising / lowering lever 16 is operated to the lowering position of the seedling planting device 2, the electric motor M is driven to drive the planting clutch 2
In addition to the operation of turning off 1, the electromagnetic control valve V is driven to raise the seedling planting device 2 to the maximum raising position while judging the detection state of the limit switch SW2 [Steps 1 to 4]. Operation time t for raising the lifting operation switch SW1
When 1 is equal to or longer than the predetermined time T1, the electromagnetic solenoids 28R and 28L are switched to operate the drawing marker 23.
R and 23L are switched left and right [steps 5 and 6].
When the operation time t1 is short, the electromagnetic solenoid S
L is not driven, and the left and right switching of the drawing markers 23R and 23L is suppressed. When the up / down operation switch SW1 is operated again, the electromagnetic control valve V is driven to lower the planting apparatus 2 on the ground, and the up / down operation switch S1 is operated.
When the operation time t2 for lowering W1 is longer than the predetermined time T2, the electric motor M is driven and the planting clutch is driven when the predetermined time T3 elapses from the point of contact detected from the change in the output of the potentiometer PM2. 21 is automatically operated (steps 7 to 12). When the lowering operation time t2 is short, the seedling planting device 2 is lowered to the ground, and the planting clutch 21 is maintained in the disengaged state. When the planting clutch 21 is turned on and operated, the planting state display lamp 44 provided on the control panel 17 is lit in blue, and when the planting clutch 21 is in the disengaged state, it is lit in red (step). 13, 15]. In addition, a marker lamp 45 provided on the control panel 17 is displayed to indicate which side of the drawing markers 23R, 23L in the active state is on the left or right [Step 14].

[Another Embodiment] The lifting operation switch SW1 may be constituted by a swing operation type in place of the push operation type. At this time, the discrimination of the operation form in the step 5 and the step 9 is performed by the operation The determination may be made based on the difference in the direction. Also, the configuration in which the planting clutch 21 is engaged after the seedling planting apparatus 2 is lowered may be such that the planting clutch 21 is engaged by a special operation tool instead of the one that is automatically engaged by the passage of time.

[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 front view of a drawing marker support unit.

FIG. 3 is an overall side view of the rice transplanter.

FIG. 4 is a control flowchart.

FIG. 5 is a control flowchart.

[Explanation of symbols]

 2 Working device 16 Lifting operation tool 21 Work clutch 23R, 23L Drawing marker SW1 Forced lifting operation tool

Claims (1)

(57) [Claims] 1. A left and right line drawing marker (23R) which is connected to a traveling machine so as to be able to drive up and down freely, and which is switchable between an operating posture protruding left and right outward and a retracted posture retracting inward. , (23L), the work clutch (21) being switchable between an on state for driving the work apparatus (2) and an off state for stopping the work apparatus (2).
And an elevating operation tool (16) for elevating and lowering the working device (2) to an arbitrary height, wherein the elevating operation tool (16) is set at a specific position. Only, switching between the state in which the working device (2) is forcibly raised and the state in which the working device (2) is lowered, the selection of the left and right drawing markers (23R) and (23L) to be switched to the working posture, and the work clutch (21). transplanting machine has cut operation <br/> and the line cormorant forced the lifting operation member of the (SW1).