JPS6227764B2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to an auxiliary seedling replenishment device for a riding rice transplanter, and in particular, when replenishing auxiliary seedlings, the traveling of the passenger vehicle body and the operation of the rice transplanting machine are stopped, and the auxiliary seedling loading table is tilted to automatically automatically feed the auxiliary seedlings. This invention relates to an auxiliary seedling replenishing device that allows the replenishment of auxiliary seedlings and prevents the vehicle body from traveling and the rice transplanting machine from operating until the replenishment of the auxiliary seedlings is completed.

[Conventional technology]

Generally, in a riding type rice transplanter, an auxiliary seedling platform is provided on the passenger vehicle body, a seedling platform is provided on the rice transplanting machine that is connected to the passenger vehicle body via a support link mechanism so as to be able to move up and down, and the seedling platform is placed on the seedling platform. When the number of remaining seedlings falls below a predetermined amount, this is detected and the auxiliary seedlings placed thereon are replenished from the auxiliary seedling mounting stand. This type of auxiliary seedling replenishment device includes a tilting cylinder operation (tilting mechanism) for tilting the auxiliary seedling loading platform and supplying auxiliary seedlings to the seedling loading platform, and a power transmission system to the traveling device and the rice transplanting machine. By switching the clutch cylinder mechanism (clutch mechanism) of the provided main clutch mechanism between the oil supply side and the oil return side using an electromagnetic four-way switching valve (switching mechanism), it is possible to control the running of the passenger vehicle and rice planting when replenishing auxiliary seedlings. The application of the present invention provides a system in which auxiliary seedlings are automatically replenished by linking the operation stop of the working machine and the tilting of the auxiliary seedling platform, and this replenishment can be done easily and at an appropriate time. People have been the first to make proposals and have achieved great results.

[Problems to be solved by the invention]

The present invention is a further improvement on what was previously proposed by the above-mentioned patent application, and the operation of the passenger vehicle body and rice transplanting work machine is not allowed until the supply of auxiliary seedlings is completed and the auxiliary seedling platform returns to the horizontal position. The purpose of this system is to prevent problems such as the auxiliary seedlings falling off from the slanted auxiliary seedling platform due to the impact at the start of travel with a simple configuration. .

[Means to solve the problem]

In order to achieve this purpose, an actuating mechanism for actuating the clutch mechanism and the tilting mechanism provided in the main clutch mechanism, and an actuating mechanism for actuating the clutch mechanism and the tilting mechanism provided in the main clutch mechanism, and an actuating mechanism for the seedlings on the seedling stand that are interposed between the actuating mechanism and the tilting mechanism and the clutch mechanism. a switching mechanism that detects the amount and switches the tilting mechanism; a delay mechanism provided on the switching mechanism; and an operating means that operates in conjunction with the tilting mechanism to operate the switching mechanism with the auxiliary seedling platform in a horizontal state. By selecting the switching position of the mechanism, the main clutch mechanism is shut off, the auxiliary seedling platform is tilted, the auxiliary seedling platform is returned horizontally, and the main clutch mechanism is then engaged. , the input is delayed.

【Example】

Hereinafter, one embodiment of the present invention will be specifically described with reference to the drawings. In FIG. 1, reference numeral 1 denotes a passenger car body, and at the rear of this passenger car body 1 is a four-point support link mechanism 2.
A rice transplanting work machine 3 is connected via the. The passenger vehicle body 1 includes a traveling device 4 and a power transmission system (both not shown) for transmitting power from an engine to the traveling device 4, and this power transmission system is provided with a main clutch mechanism 5, which will be described later. The rice transplanting machine 3 includes a forward-inclined seedling platform 6, a planting body 7 and a float 8 that operate together with the seedling platform 6 by receiving power from the power transmission system. In addition, the support link mechanism 2
An elevating cylinder mechanism 9 is interposed between the vehicle body 1 and the vehicle body 1 . An auxiliary seedling platform 10 is installed on the rear of the passenger vehicle body 1, and the front end of the auxiliary seedling platform 10 is supported by two left and right columns 11, and the rear end is supported by an auxiliary seedling platform tilting cylinder mechanism 12. Each of the pillars 11 is supported by the passenger vehicle body 1, and the middle portion of the pillar 11 is bendable. As shown in FIGS. 1 to 3, the main clutch mechanism 5 includes a clutch cylinder mechanism 13, and this cylinder mechanism 13, the tilting cylinder mechanism 12, and the lifting cylinder mechanism 9 are connected to an electromagnetic four-way switching valve 14. A return flow path 18 provided between the oil return side of the switching valve 14 and the tank 17 is connected to an oil supply mechanism 16 switchably equipped with a pump 15 through the switching valve 14, and a check valve as a delay mechanism to be described later. 19 are provided. A tilting check valve 20 is provided in the flow path between the switching valve 14 and the tilting cylinder mechanism 12, and a lifting check valve 21 and a lifting check valve 21 are provided in the flow path between the switching valve 14 and the lifting cylinder mechanism 9. An elevation switching valve 22 is provided. The main clutch mechanism 5
includes a clutch rod 24 connected to a clutch pedal 23 and a return spring 25 connected to the rod 24, with a piston 26 of the clutch cylinder mechanism 13 facing the distal end of the clutch pedal 23. An interlocking cable 27 connected to the piston 26 is connected to a release lever 28 pivotally connected to a valve housing 29 of the tilting check valve 20.
8 opens the tilting check valve 20 by pulling the cable 27. An operating rod 31 is supported by the piston 30 of the tilting cylinder mechanism 12, and the operating lever 3 is connected to the operating rod 31.
2 is pivotally attached to the cylinder 33 of the tilting cylinder mechanism 12, and the lifting check valve 21 is opened and closed by swinging the operating lever 32. Also,
A control cable 34 is connected to the operating lever 32, and the valve housing 3 of the check valve 19 is connected to this cable 34.
A press lever 36 pivotally mounted to the control cable 34 is connected to the check valve operating means 37, which opens the check valve 19 by pulling the control cable 34. The electromagnetic four-way switching valve 14 is configured to be switched by a signal from a detection means 38 provided on the seedling platform 6, and the lifting switching valve 22 is used to switch the rice transplanting machine 3 up, down, and neutral. You can now select the location. In addition, 35 in FIG. 3 is a relief valve. The auxiliary seedling replenishing device configured as described above is used to load seedlings onto the seedling platform 6 when the rice transplanting machine 3 is being towed by the running vehicle body 1 and seedlings are being planted using the planting body 7. When the remaining amount of pine seedlings corresponding to one of the plurality of planting rows among the pine seedlings in the area falls below a predetermined amount, the detection means 38 having a switch mechanism etc. is activated, and the seedling mounting table 6 moves to the width of the rice transplanting machine 3. When the passenger vehicle body 1 is located at the center in the direction, the traveling of the passenger vehicle body 1 is stopped, and the operation of the rice transplanting work machine 3 is automatically stopped,
The auxiliary seedling mounting table 10 is tilted so that the rear part is positioned downward. That is, the operation of the detection means 38 switches the electromagnetic four-way switching valve 14 through appropriate electrical means, and the pump 15 of the oil supply mechanism 16 is switched.
and the clutch cylinder mechanism 13 of the main clutch mechanism 5.
and the tilting cylinder mechanism 12.
And the cylinder mechanism 9 for raising and lowering is communicated with the tank 17. In this case, the check valve 19 provided between the switching valve 14 and the tank 17 is open.
In this way, the pressure oil from the pump 15 passes through the switching valve 14 and acts on the cylinder of the clutch cylinder mechanism 13, causing the piston 26 to advance, and the clutch rod 24 to move through the clutch pedal 23 against the return spring 25. By moving the main clutch mechanism 5 and interrupting the main clutch mechanism 5, the traveling of the traveling vehicle body 1 by the traveling device 4 is stopped, and the operation of the rice transplanting machine 3 is also stopped. Further, the clutch cylinder mechanism 1
The interlocking cable 2 is moved by the advance of the piston 26 of 3.
7 is towed, the release lever 28 rotates and the tilting check valve 20 opens. Therefore, oil is returned from the cylinder 33 of the tilting cylinder mechanism 12 to the tank 17 through the switching valve 14 due to the weight of the auxiliary seedling platform 10, and the piston 30 of the tilting cylinder mechanism 12 is compressed, so that the support 11 is bent, and the auxiliary seedling mounting table 10 tilts as shown by the chain line in FIG.
It slides up and is replenished by this. When the auxiliary seedling platform 10 is tilted, the lifting check valve 21 is closed in conjunction with the compression of the piston 30 of the tilting cylinder mechanism 12, and the check valve 19 is also closed. After the supply of auxiliary seedlings is completed, when the electromagnetic four-way switching valve 14 is operated by an appropriate means, the auxiliary seedling mounting stand 10
returns to the horizontal state, and thereafter the traveling of the passenger vehicle body 1 and the operation of the rice transplanting work machine 3 are resumed, and the planting work is performed. That is, the electromagnetic four-way switching valve 14 is operated, the pump 15 is brought into communication with the tilting cylinder mechanism 12 and the lifting cylinder mechanism 9, and the clutch cylinder mechanism 13 is brought into communication with the tank 17. In this way, pressure oil is supplied from the pump 15 to the switching valve 1.
4. Since it is supplied to the tilting cylinder mechanism 12 via the tilting check valve 20, the piston 30 extends and the support 11 also becomes straight, and the auxiliary seedling platform 10, which had been tilting, moves to the solid line in FIG. It returns to the horizontal state as shown in . Further, the clutch cylinder mechanism 13 is communicated with the tank 17 via a switching valve 14 and a check valve 19, but the check valve 19 closes when the auxiliary seedling platform 10 is tilted, and unless it is in a horizontal state. That is, since the piston 30 of the tilting cylinder mechanism 12 does not open unless it is in the extended state, the return of the oil to the tank 17 is delayed. When the check valve 19 opens, the spring force of the return spring 25 of the main clutch mechanism 5 causes the piston 26 to enter through the clutch rod 24, and the main clutch mechanism 5 is engaged, thereby stopping the vehicle body 1 from traveling and the rice planting work. Operation of machine 3 is resumed. In addition, in the above-described operation, the lifting check valve 21 is connected to the auxiliary seedling platform 10.
The piston 3 of the tilting cylinder mechanism 9 that raises and lowers the
0, it closes when the auxiliary seedling platform 10 is tilted and opens when it is horizontal, allowing oil to flow to the lifting switching valve 22 only in this horizontal position.
2, the lifting cylinder mechanism 9 is automatically controlled to control the planting depth.

【Effect of the invention】

As explained above, the auxiliary seedling supply device for a riding type rice transplanter according to the present invention detects the amount of seedlings on the seedling platform of the rice transplanting machine and switches the switching mechanism.
The main clutch mechanism is shut off to automatically stop the travel of the vehicle and the operation of the rice transplanting machine, and in this state, the auxiliary seedling platform can be tilted to supply auxiliary seedlings. An operating means is provided for operating a switching mechanism provided with a delay mechanism when the auxiliary seedling rest is in a horizontal state in conjunction with the tilting mechanism of the auxiliary seedling rest, so that the auxiliary seedling rest can be returned to the horizontal state. Since the main clutch mechanism is shut off until the start of travel, the auxiliary seedlings will not fall from the auxiliary seedling platform even when the impact occurs at the start of travel, and the vehicle can run and rice transplant operations without any problems after the auxiliary seedlings have been replenished. This has the effect of making the machine work again.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway schematic side view showing an embodiment of the present invention, FIG. 2 is a sectional view of the main clutch mechanism, and FIG. 3 is a diagram of the hydraulic circuit configuration. 1...Passenger vehicle body, 2...Support link mechanism, 3...
...Rice transplanting machine, 4...Traveling device, 5...Main clutch mechanism, 6...Seedling platform, 7...Planting body, 8...
Float, 9... Lifting cylinder mechanism, 10...
Auxiliary seedling stand, 11... Support, 12... Tilting cylinder mechanism, 13... Clutch cylinder mechanism, 1
4...Solenoid four-way switching valve, 15...Pump, 16...
... Oil supply mechanism, 17 ... Tank, 18 ... Return passage, 19 ... Check valve, 20 ... Tilting check valve, 21 ... Lifting check valve, 22 ... Lifting switching valve, 23...Clutch pedal, 24...Clutch rod, 25...Return spring, 26...Piston,
27... Interlocking cable, 28... Release lever, 2
9... Valve housing, 30... Piston, 31... Operating rod, 32... Operating lever, 33... Cylinder, 3
4...Control cable, 35...Valve housing, 36...Press lever, 37...Check valve operation means, 38...Detection means, 39...Relief valve.

Claims (1)

[Scope of Claims] 1. A riding type vehicle in which a rice transplanting machine having a seedling platform and a planting body is connected to a passenger vehicle body having a traveling device and a power transmission system to the rice transplanting machine via a support link mechanism so as to be movable up and down. In a rice transplanter, an auxiliary seedling platform is tiltably supported on a passenger vehicle body so that the side end of the seedling platform is lowered, and an auxiliary seedling platform tilting mechanism is interposed between the passenger vehicle body and the auxiliary seedling platform. , a main clutch mechanism provided in the power transmission system, an actuation mechanism for actuating the clutch mechanism and the tilting mechanism provided in the main clutch mechanism, and a mechanism interposed between the actuation mechanism and the tilting mechanism and the clutch mechanism; a switching mechanism that detects the amount of seedlings on the seedling platform and switches the tilting mechanism; a delay mechanism provided in the switching mechanism; and an operation means that operates in conjunction with the tilting mechanism to operate the switching mechanism with the auxiliary seedling platform in a horizontal state. By selecting the switching position of the switching mechanism, the main clutch mechanism can be shut off and the auxiliary seedling platform can be tilted;
An auxiliary seedling replenishing device for a riding rice transplanter, characterized in that the auxiliary seedling loading platform is returned horizontally and the main clutch mechanism is then engaged.