JP3220204B2 - Rice transplanter lifting control - Google Patents

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 disengaged. The artificial raising / lowering lever of the seedling planting device is provided so as to be freely operable to switch between the neutral position and the forced raising position, and regardless of the operation of the artificial raising / lowering lever, the state in which the seedling planting device is forcibly raised and the grounding state. The present invention relates to a raising and lowering control device for a rice transplanter having a raising and lowering operation switch that can be switched between a lowering state and a lowering state.

[0002]

2. Description of the Related Art Conventionally, in the above-described raising and lowering control device of a rice transplanter, when turning while planting in a field,
When the raising and lowering operation switch is pressed and operated, the seedling planting device is forcibly raised, and when the raising and lowering operation switch is pressed and operated again, the seedling planting device is configured to be set to a ground-down state where planting operation is possible. there were.

[0003]

In the above-mentioned conventional structure, the seedling planting device is raised after the planting clutch is turned off during the headland turning operation during work in the field, and the steering operation of the steering wheel is performed. In addition, it is necessary to perform the deceleration operation of the traveling speed in a short time, and there is a disadvantage that the operation operation is troublesome, and especially for an unskilled person, the operation becomes difficult. For this purpose, the raising operation of the seedling planting apparatus is configured by a two-position switching type operation switch. In such a configuration, when the on / off operation of the planting clutch is linked to the operation of the raising / lowering operation switch, an operation dedicated to on / off of the planting clutch becomes unnecessary, and there is an advantage that the burden of the steering operation can be further reduced. If the timing of the raising / lowering operation of the seedling planting device and the timing of the on / off operation of the planting clutch are matched, the planting clutch may operate while the seedling planting device is floating from the mud surface, and the operation of the planting mechanism may be performed. As a result, the seedlings are thrown out into the air, and there is a problem that the seedlings are lost. Therefore, as a method for solving such a disadvantage, a dedicated on / off operation tool for the planting clutch is provided, and when the seedling planting device at the ascending position is lowered, the on / off operation tool is used to artificially perform the on / off operation. Such a configuration is conceivable. However, since the maneuvering operation is complicated when turning as described above, when the descending operation of the seedling planting device is performed by the elevating operation switch, the operator automatically engages the planting clutch. There is a risk that the vehicle may continue running in a non-planted state, and there is room for improvement in this regard. An object of the present invention is to eliminate the above disadvantages.

[0004]

According to the present invention, there is provided a raising and lowering control device for a rice transplanter described at the outset, wherein an alarm is issued when the raising and lowering operation switch is switched from a forced ascent operation state to a ground-down state. And an alarm stopping means for stopping the alarm when the planting clutch is engaged.

[0005]

The lifting operation of the seedling planting device is not a swing operation type operation tool but a switching type switch, so that the burden of the steering operation during the turning traveling can be reduced, and the turning traveling is completed and the next time. When the seedling planting device is lowered by operating the raising and lowering operation switch to start the planting operation of the planting plant, if the planting clutch is in the disengaged state, an alarm is issued, so that the pilot planting operation is not performed. There is no fear that the driver is notified and forgets to artificially perform the operation of engaging the planting clutch.

[0006]

Therefore, by configuring the raising and lowering operation of the seedling planting apparatus to be a switch type of two-position switching, it is possible to reduce the operation burden on the operator in the headland turning operation, but at the time of the next planting operation. The planting clutch must be able to be engaged in the clutching operation at a good timing and reliably, and when the planting device is floating above the ground, the planting is thrown out into the air by the planting operation or the planting is not planted. Therefore, it is possible to prevent adverse effects such as continuing the aircraft traveling without the operator knowing the situation.

[0007]

Embodiments will be described below with reference to the drawings. FIG.
Shows a riding rice transplanter. In this rice transplanter, the seedling planting apparatus 2 can be driven up and down by a lift cylinder 3 [an example of a drive mechanism] via a parallel quadruple link mechanism 1 at the rear of the riding type traveling machine body, and the body front-rear axis by a rolling cylinder 4. It is configured so as to be freely driven and rolled around. The traveling body has an engine 6 mounted in a driving portion bonnet 5 at the front of the body, and the power of the engine 6 is transmitted to a belt-type continuously variable transmission 7 and a first forward speed F for road traveling.
1. A forward drive second speed F2 for planting work and a rearward state R are supplied to front and rear wheels 9 and 10 via a gear-type main transmission 8 which can be switched to a rearward state R to form an airframe traveling drive system and a main transmission. 8 to transmission shaft 11 and planting clutch 12
A transmission system is configured to supply the seedlings to the seedling plant 2 via the. 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 seedling planting apparatus 2 includes a seedling rest 13 which reciprocates left and right by placing seedlings for planting, a planting mechanism 14 for taking out seedlings one by one from the lower end of the seedling rest 13 and planting them in a field. It is provided with a leveling float 15 and the like, and during planting work traveling in the field, while maintaining the height of the mud surface of the seedling planting apparatus 2 against the mud surface in a predetermined posture, the planting depth of the seedlings is controlled to be constant, An 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 machine body inclined due to the unevenness of the tillage. 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.

[0008] Then, the control panel 20 of the traveling body,
A raising / lowering lever 21 for manually raising and lowering the seedling planting device 2 is provided. The raising / lowering lever 21 is a raising position for forcibly raising the seedling planting device 2 and a neutral position for stopping the raising / lowering and holding the position. The lowering position where the seedling planting apparatus 2 is lowered to the ground to set the automatic control mode, and the lowering position where the seedling planting apparatus 2 is lowered to set the planting clutch 12 to the automatic control mode, respectively. It is configured to be freely switchable. That is, the output of the potentiometer 22 for detecting the swing operation amount of the lift lever 21 is input to the control device 19,
The zone is determined based on the detection level of the potentiometer 22 and control corresponding to each of the above operation positions is performed. In addition, the control panel 20 includes a raising / lowering operation switch SW1 operable to switch between a state in which the seedling planting device 2 is forcibly raised and a state in which the seedling planting device is lowered regardless of the operation of the lifting lever 21. It is provided with a clutch operation switch SW2 of the electric motor M for driving the clutch, and a ground leveling mode setting switch SW3 for setting the seedling planting apparatus 2 to a leveling state in which the seedling plant 2 is grounded in a free state. A clutch-on detection switch SW4 for detecting that the clutch is set to the engaged state and a clutch-off detection switch SW5 for detecting that the clutch is set to the disengaged state are provided near the clutch operating portion of the electric motor M. Transmission 8
In the vicinity of the speed change lever 23, a planting work state detection switch SW6 that detects that the speed change lever 23 has been operated to the second forward speed position F2 and a reverse state detection switch that detects that the speed change lever 23 has been operated to the reverse position R SW7, and a link switch SW8 for detecting that the seedling planting device 2 is at the maximum ascending position is provided near the link mechanism 1, and each of these switch groups is connected to the control device 19. .
An alarm means A for issuing an alarm when the raising / lowering operation switch SW1 is switched from a forced ascending operation state to a ground descending state, and an alarm stop means for stopping the alarm in accordance with the clutching operation of the planting clutch 12. B is provided. The alarm means A and the alarm stop 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.

FIGS. 2 to 5 show control flowcharts of the control device 19. If the elevating lever 21 is at the neutral position, the stop mode is set to stop driving the lift cylinder 3 and maintain the state. If the elevating lever 21 is at the elevating position, the seedling planting device 2 is lifted until it reaches the maximum elevating position. Set the ascending mode for driving the cylinder 3 to ascend [Steps 1 to
4]. When the main shift lever 23 is operated to the reverse position R, the seedling planting device 2 is forcibly raised unless the link switch SW8 is in the detection state, and when the main shift lever 23 is disengaged from the reverse position R during the upward movement. At that time, the ascent operation is stopped and the state is maintained. If the vehicle is at the maximum ascent position during the reverse operation, that state is maintained [steps 5 to 10].
Next, when the main shift lever 23 is operated to the forward second speed position F2 and the planting operation state detection switch SW6 is in the detection state, the raising and lowering operation switch SW1 is operated to forcibly raise the seedling planting apparatus 2. When the link switch SW8 is activated, the ascent operation is stopped. Thereafter, when the raising / lowering operation switch SW1 is operated again, at this time, if the leveling mode setting switch SW3 is turned on and the operation is performed, the seedling planting apparatus 2 is set to the strong leveling mode in which the planting apparatus 2 is brought into contact with the free descending state and operated. If not, the automatic control mode is set [steps 11 to 22]. When the lifting lever 21 is operated to the planting position and the clutch operation switch SW2 is operated, the link switch SW8 is in the off state,
The clutch off detection switch SW5 is in the detection state, and
When it is confirmed that the clutch-on detection switch SW4 is in the non-detection state, the electric motor M is driven to engage and operate the planting clutch 12 to start the planting traveling work [steps 23 to 29]. If the planting operation state detection switch SW6 is not in the detection state and the ascending operation is not performed during reverse movement, the ground leveling mode switch SW3 is set to the strong leveling mode if operated, and if not, the mode is set to the automatic control mode. ,
If the lift lever 21 is at the lower position, the process returns (steps 30 to 36). As described above, unless the main shift lever 23 is operated to the forward second speed position F2, the operation of the elevating operation switch SW1 is not determined, and the forced elevating operation is not performed. Further, if the lifting lever 21 is at the neutral position or the lifting position, the operation of the lifting operation switch SW1 is similarly not determined, and the forced lifting operation is not performed. When the lowering operation is performed by the raising / lowering operation switch SW1 and the lifting / lowering lever 21 is in the planting position, the alarm lamp 24 is turned on to call attention until the operator operates the clutch operation switch SW2. This alarm is released when the clutch operation switch SW2 is turned on unless the main shift lever 23 is operated to the reverse position and the elevation operation switch SW1 is not operated [steps 37 to 39, step 28].
Step 37 constitutes the alarm means A, and step 28
Constitute the alarm stopping means B. Also, when the raising / lowering lever 21 is operated to the planting position with the seedling planting device 2 raised during the backward movement of the aircraft as described above, the alarm lamp 24 is turned on to prompt the operation of the lifting / lowering operation switch SW1 [Step 40]. To 43]. If the link switch SW8 is in the detection state even though the clutch operation switch SW2 is turned on, the clutch-off detection switch SW5
Is in the non-detection state, the clutch-on detection switch S
When W4 is in the detection state, it is determined that the mode is the failure mode, and the alarm lamp 24 blinks [Step 4].
4]. Then, the above control is repeated until the power is turned off.

[0010] In the claims, reference numerals are provided 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 control flowchart.

FIG. 3 is a control flowchart.

FIG. 4 is a control flowchart.

FIG. 5 is a control flowchart.

FIG. 6 is an overall side view of the rice transplanter.

[Description of Signs] 2 Seedling planting device 3 Drive mechanism 12 Planting clutch 21 Artificial elevating lever A Alarm means B Alarm stopping means SW1 Elevating operation switch

Claims (1)

(57) [Claims] A seedling planting device (2) is connected to a traveling body by a drive mechanism (3) so as to be able to move up and down, and a planting clutch (12).
Planting position, planting clutch (12) to be grounded in the entering state
The artificial raising / lowering lever (21) of the seedling planting device (2) is provided so as to be freely operable to be switched to a lowering position, a neutral position, and a forced ascent position where the grounding is performed in a cutting state, and the operation of the artificial raising / lowering lever (21). Irrespective of, the raising and lowering control device of the rice transplanter provided with a raising and lowering operation switch (SW1) that can be switched between a state in which the seedling planting device (2) is forcibly raised and a state in which the seedling transplanting device is lowered. Alarm means (A) for issuing an alarm when the switch (SW1) is switched from the forced ascending operation state to the ground descending state.
And a warning control means (B) for stopping the warning in accordance with a clutch-engaging operation of the planting clutch (12).