JP2987250B2 - Transplant machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a ground machine which is connected to a traveling machine body via a drive mechanism so as to be able to move up and down, and transmits power from an engine of the traveling machine body to the ground machine. The present invention relates to a transplanter having a work clutch that can be switched between a cutoff state and a cutoff state.

[0002]

2. Description of the Related Art Japanese Patent Laid-Open Publication No.
In the device disclosed in Japanese Patent Laid-Open Publication No. 2 (1990) -2002, when the backward traveling state of the traveling machine body is detected, the seedling planting device is moved up accordingly. There is a configuration in which the control is released, and thereafter, the seedling planting device can be artificially lowered by an artificial lifting lever. In addition, a control system using an elevating operation switch is provided separately from such an elevating operation system, and when the elevating operation switch is switched during planting work, the seedling planting apparatus is configured to be operated to ascend to the maximum ascending position. When the raising / lowering operation switch is operated, the seedling planting device is switched to the ground contact lowering position.

[0003]

In the conventional structure described above, when the traveling body is moved backward in a field, the seedling planting device mounted on the rear part of the body may be damaged by contact with ridges or the like. As soon as it is set, the seedling planting equipment is raised, and the seedling planting equipment is grounded as close as possible to the ridge. In addition to the above, the raising and lowering operation switch is used when, for example, the headland turns during the planting operation in the field, the pilot disconnects the work clutch of the seedling planting device, and then operates the seedling planting device. It is necessary to perform the turning operation of the steering handle while raising from the grounding work state, and it is necessary to perform these operations quickly within a short time, and it is difficult for the unskilled person to perform the steering operation Because it's an operation to perform rising operation of the seedling planting apparatus, rather than swinging operation of the operation lever, but with improved operability constitutes a simple changeover switch operations. However, there is a disadvantage that it is complicated to manually operate the rocking operation type lever after the above-described ascending operation at the time of reverse traveling, and in this case, it is conceivable to provide a dedicated changeover switch for performing the descending operation. However, in this case, the number of operating tools increases, the operation becomes complicated, and the structure becomes complicated. An object of the present invention is to solve the above-mentioned disadvantages with a reasonable configuration.

[0004]

According to a first aspect of the present invention, there is provided a lift control device for a rice transplanter according to the first aspect of the present invention, comprising: lifting and lowering the ground work device; A first operating tool for performing the above operation and raising the ground working device to a predetermined height with a disengagement operation of the work clutch, and from this raised state to the working height of the ground working device while maintaining the disengaged state of the work clutch. A second operating tool for lowering and lowering the traveling machine body is provided, and a control device for raising the ground working device to a predetermined height in association with the reverse movement of the traveling body is provided.

[0005] A second characteristic configuration of the present invention (claim 2) is that, in claim 1, the control device is configured to control the second operating tool after the ascent of the ground working device associated with reversing the traveling body. The point is that the control operation is set so that the ground working device is lowered to the working height by the operation.

According to a third characteristic configuration of the present invention (claim 3), the control device according to claim 1 or 2, wherein the shift operation tool for setting a traveling speed of the traveling body is set to a reverse position. The control operation is set so as to start the lifting of the ground working device based on the control operation.

According to a fourth aspect of the present invention, there is provided a ground work apparatus using the second operating tool only when the first operating tool is set to a specific operation position. The control operation of the second operating tool is set such that the ascending and descending are performed, and the control device sets the first operating tool to the specific operation position only when the traveling body is moved backward. The point is that the control operation is set so as to raise the linked ground work device to a predetermined height.

[0008]

According to the first aspect, when the ground work device is set to the work height and the work clutch is set to the engaged state, the ground work device is raised by operating the second operating tool. In this case, the work clutch is disengaged in conjunction with this rise, so that unnecessary operation of the ground work device can be eliminated even if the worker does not perform the operation of disengaging the work clutch when the ground work device is raised. Conversely, when the ground working device in the ascending state is lowered to the working height, the same operation is performed by operating the same second operating tool, thereby simplifying the operation.
In addition, when the traveling body is moved backward, the ground work device rises in conjunction with the reverse movement.For example, even in an environment where there is a ground protruding object at the rear position, the worker raises the ground work device. Even without doing so, it is possible to avoid contact between the ground protrusion and the ground work device.

According to the second aspect, after the ground work device is automatically raised by the reverse movement of the traveling body, the ground work device is lowered by the second operating tool for raising and lowering the ground work device. Erroneous operation hardly occurs when descending, and this descending can be performed at a necessary timing.

According to the third aspect, since the ascent of the ground working device is started based on the setting of the speed change operation tool to the reverse position, for example, the ascent starts after the traveling body actually starts to reverse. As a result, the ground work device can be raised earlier, so that the contact between the ground protruding object and the ground work device can be reliably avoided.

According to the fourth aspect, the ground operating device is moved up and down by the second operating tool only when the first operating tool is set to a specific operating position.
By forming the ground operating device at a position separated from the operation area for raising and lowering the ground operating device, for example, even if the second operating tool is erroneously operated while the ground operating device is raised by operating the first operating tool, The working device is not lowered, and conversely, the ground operating device is lowered by operating the first operating tool.
Even if the operation tool is operated by mistake, the ground work device will not be raised. Further, only when the first operating tool is set at a specific operation position, the ground work device associated with the reverse movement of the traveling body is raised. Therefore, it is necessary to raise the ground work device associated with the reverse movement of the travel body. If not, the first operating tool is set at a position deviating from the specific position. Conversely, if the ground work device associated with the reverse movement of the traveling body needs to be lifted, the first operating tool must be set at the first position.
It is only necessary to set the operation tool at a specific position.

[0012]

As a result, the operation of disengaging the work clutch and the lifting of the ground work device can be simultaneously performed by operating a single operating tool, so that a simple operation can be performed. Can be lowered to its original height, making it easy to operate without any mistakes in the selection of operating tools.In addition, avoid contact between ground protruding objects such as ridges and ground work equipment in advance when the vehicle is moving backwards. Therefore, damage to the ground work equipment can be prevented. In particular, when the aircraft is moved backwards on the ridge and the work start position is adjusted, the ground work equipment is lowered to the work height only by operating the second operating tool, so that work can be started quickly and highly efficient work can be performed. It is possible (claim 1). Furthermore, after raising the ground work device accompanying the reversing of the traveling aircraft, use the operating tool used for raising and lowering the ground work device, and use the same operation as operating the operating device to lower the ground work device. Since the ground work device can be lowered, the operation of the ground work device can be performed without any sense of incongruity without any erroneous operation at any timing (claim 2). Even if is located, the ground work device can be raised early in the early stage of the reversal of the traveling body and damage to the ground work device can be reliably avoided (Claim 3). When it is not necessary to lower the ground working device by only setting, as in the case of traveling on a road, it is possible to prevent the ground working device from being lowered due to erroneous operation of the second operating tool. Maintain Can also prevent an increase in ground work apparatus according to erroneous operation of the second operating member during work, also,
Even when it is not necessary to raise the ground working device such as when the traveling body is slightly moved backward during the work, it is possible to raise the ground working device linked to the backward movement of the traveling aircraft only by setting the operation position of the first operating tool. Thus, the work can be efficiently performed by preventing it (claim 4).

[0013]

Embodiments will be described below with reference to the drawings. FIG.
Shows a riding rice transplanter as a transplanter. In this rice transplanter, a seedling planting device 2 [an example of a ground working device] can be driven up and down by a lift cylinder 3 [an example of a driving mechanism] at the rear of a riding type traveling machine body via a parallel quadruple link mechanism 1, and rolling can be performed. The cylinder 4 is connected so as to be capable of driving rolling freely around the longitudinal axis of the fuselage. The traveling aircraft is
The engine 6 is mounted in the driving unit hood 5 at the front of the fuselage, and the power of the engine 6 is transmitted to the belt-type continuously variable transmission 7 and the first forward speed F1 for road running, the second forward speed F2 for planting work, The vehicle is supplied to front and rear wheels 9 and 10 via a gear-type main transmission 8 which can be switched to a reverse state R to form an airframe traveling drive system, and a transmission shaft 11 and a planting clutch 12 [ The transmission system is configured to supply the seedlings to the seedling plant 2 via an example of a work clutch. The planting clutch 12 is configured to perform an on / off operation of the clutch by an electric motor M having a speed reduction mechanism that can rotate forward and reverse. The belt-type continuously variable transmission 7 has a cam mechanism 25 in which each of the front and rear pulleys 24 is configured as a split pulley.
The speed of the gears can be changed steplessly by changing the pulley interval by the electric cylinder 26 via the motor.

The seedling planting apparatus 2 has a seedling stand 13 on which seedlings for planting are placed and which reciprocate to the left and right, and a seedling taken out one by one from the lower end of the seedling stand 13 and planted in a field. A mechanism 14, a leveling float 15 and the like are provided, and during planting work traveling in a field, the seedling planting device 2 is controlled at a predetermined posture while maintaining the height of the mud surface against mud surface in a predetermined posture. In addition, automatic control means is provided for maintaining the seedling planting apparatus 2 in a posture parallel to the mud surface with respect to the traveling body inclined due to the unevenness of the cultivator. That is, as shown in FIG. 1, the swing arms 16R and 16L, which swing up and down while following the ground on both right and left sides of the seedling planting device 2, and the swing arms 1
Potentiometer 1 for detecting relative angles of 6R and 16L
7R, 17L ground-type ground height detection sensor 18
R, 18L, and a control device 19 having a microcomputer to which the outputs of the detection sensors 18R, 18L are input, so that the electromagnetic hydraulic control valve of the rolling cylinder 4 is adjusted so that the detection values of the detection sensors 18R, 18L match. A control program for driving and controlling the electromagnetic hydraulic control valve V2 of the lift cylinder 3 so that the average value of the detection values of the detection sensors 18R and 18L matches a predetermined value set in advance. Is provided. The automatic control means is provided in the control device 19 in the form of a control program as described above.

Also, on both left and right sides of the seedling planting apparatus 2, drawing markers 27, 27 for drawing a line as an index for running the next planting strip on the mud surface are extended and retractable, and are projected and biased. As shown in FIG. 3, as the seedling planting device 2 is raised, the relative angle of the guide roller 28 in the link mechanism 1 changes with the rise of the seedling planting device 2 so as to be interlocked and stored via the operation wire 29.
Lock mechanisms 30 and 30 are provided for locking and holding in this storage position. As shown in FIG. 4, the right and left locking mechanisms 30 are cam members 3 which rotate around the same axis Y.
The cam members 31 and 32 are configured so that the lock state is sequentially switched on the left and right sides by a one-way rotating mechanism 34 driven by an electromagnetic solenoid 33.

Then, the control panel 20 of the traveling aircraft has
Elevating lever 21 for artificially raising and lowering seedling planting device 2
An example of a first operating tool is provided, and the lifting lever 21
A raising position for forcibly raising the seedling planting device 2, a neutral position for stopping the raising and lowering and holding the position, a descending position for lowering the seedling planting device 2 to the ground and setting the automatic control mode,
The seedling planting apparatus 2 is lowered so that the planting clutch 12 is engaged and the planting position is set to the automatic control mode. That is, the lifting lever 21
The output of the potentiometer 22 for detecting the swing operation amount is input to the control device 19, and the zone corresponding to the detection level of the potentiometer 22 is discriminated to perform the control corresponding to each operation position. In addition, regardless of the operation of the raising / lowering lever 21, the control panel 20 has a raising / lowering operation switch SW1 [second operation] that can be freely switched between a state in which the seedling planting device 2 is forcibly raised and a state in which the seedling planting device is lowered. One example of the tool], and each of the clutch operation switches SW2 of the electric motor M for driving the planting clutch is provided. In the vicinity of the shift lever 23 (an example of a shift operation tool) of the main transmission 8, an implanting work state detection switch SW3 for detecting that the shift lever 23 has been operated to the forward second speed position F2.
And a reverse state detection switch SW4 for detecting that the operation has been performed to the reverse position R, and a link switch SW5 for detecting that the seedling planting apparatus 2 is at the maximum ascending position in the vicinity of the link mechanism 1. Each of these switch groups is connected to the control device 19.

The reverse state detection switch SW4
Is in the detecting state, the forcible raising means A for forcibly raising the seedling planting device, and the raising and lowering operation switch SW1 after the forcing operation of the seedling planting device as described above, the seedling mounting device is operated. 2 is provided with a lowering operation means B for lowering. The forcible raising means A and the lowering operation means B are provided in the control device 19 in the form of a control program, and will be described in detail below together with the control operation of the control device 19.

FIG. 2 shows a control flowchart of the control device 19 during the planting operation. During control,
The lifting lever 21 is set at the planting position. When the main shift lever 23 is operated to the second forward speed F2 and the planting operation state detection switch SW3 is in the detection state, for example, when the elevation operation switch SW1 is operated near the ridge, the electric cylinder 26 is controlled and driven. To automatically decelerate to near the minimum speed, drive the marker switching solenoid 33 to select the left and right switching of the drawing markers 27, 27, and drive the electric motor M to disengage the planting clutch 12. Activate [Steps 1-5]
The seedling planting apparatus 2 is driven up to the upper limit position while judging from the detection state of the link switch SW5 [Steps 6 to
8]. Then, when the raising / lowering operation switch SW1 is operated again, the seedling planting device 2 is operated to descend, and when the clutch operation switch SW2 is operated, the electric motor M is driven to turn on the planting clutch 12 to operate and plant. The work is restarted [steps 9 to 12].

When the main transmission lever 23 is operated to the reverse position R in a state where the seedling planting device 2 is lowered on the ground, the seedling planting device 2 is moved downward.
, And thereafter, is maintained at the ascending position until the elevating operation switch SW1 is operated.
When 1 is operated, the seedling planting apparatus 2 is lowered (steps 13 to 16). As described above, when the shift lever 23 is operated to the reverse position R, the seedling planting device 2 is forcibly raised. At this time, after raising, the seedling planting device 2 is lowered again by operating the lifting / lowering operation switch SW1. become. Step 14 constitutes the forcible raising means A, and steps 15 and 16 constitute the lowering operation means B.

In the claims, reference numerals are provided for facilitating comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of the drawings]

FIG. 1 is a control block diagram.

FIG. 2 is a control flowchart.

FIG. 3 is a front view showing an operation state of a drawing marker.

FIG. 4 is a front view showing a lock release structure.

FIG. 5 is an overall side view of the rice transplanter.

[Explanation of symbols]

 Reference Signs List 2 Ground work device 3 Drive mechanism 6 Engine 12 Work clutch 19 Control device 21 First operation tool 23 Shift operation tool R Reverse position SW1 Second operation tool

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) A01C 11/02 A01B 63/10

Claims (4)

(57) [Claims] 1. A driving mechanism (3) for a traveling body.
The ground work equipment (2) is connected so that it can move up and down freely.
Power from body engine (6) to ground work equipment (2)
Switch between the on-state to communicate and the off-state to shut off this power.
A transplanter equipped with a replaceable work clutch (12).
Te, the lifting of the ground work apparatus (2), the working clutch
A first operating tool (21) for turning on and off (12) is provided.
With the disengagement operation of the work clutch (12).
The elevation of the ground work equipment (2) to a predetermined height, and
While maintaining the disengaged state of the work clutch (12).
The second to lower the ground working device (2) to the working height
Equipped with an operation tool (SW1), and linked to the reverse
A control device for raising the ground working device (12) to a predetermined height
A transplanter comprising (19). (2) The control device (19) includes:
After the rise of the ground work equipment (12) linked to the reverse
And the ground operating device by operating the second operating tool (SW1).
Control action is set to lower (2) to the working height.
The transplanter according to claim 1, wherein (3) The control device (19) includes:
Speed change operation tool (23) for setting the traveling speed of
(R) the ground working device based on the setting
(12) The control operation is set to start the rise.
The transplanter according to claim 1 or 2, wherein (4) The first operation tool (21) is moved to a specific operation position.
Only when set to the position, the second operation tool (SW1)
And lowering of the ground working device (12)
When the control operation of the second operation tool (SW1) is set,
The control device (19) is provided with the first operation tool (21).
Only when is set to the specific operating position
Up to the predetermined height of the ground work equipment (12) linked to the reverse
The control operation is set so as to increase the pressure.
4. The transplanter according to any one of 3.