JPS6247488B2 - - 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 seedlings are stopped. The auxiliary seedling system is designed to automatically supply auxiliary seedlings by linking the tilting of the platform, and prevent the vehicle body from traveling and the rice transplanting machine from operating until the auxiliary seedling supply is completed. It's related to supply equipment.

[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. Such an auxiliary seedling supply device includes a tilting cylinder mechanism (tilting mechanism) for tilting the auxiliary seedling platform and replenishing the auxiliary seedlings to the seedling 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 using an electromagnetic four-way switching valve (switching mechanism), it is possible to stop and assist the running of the passenger vehicle body and the operation of the rice transplanting machine when replenishing auxiliary seedlings. The applicant of the present invention has previously proposed a system in which auxiliary seedlings are automatically replenished by linking the tilting of the seedling stand, and this replenishment can be easily and timely done, and has resulted in a great deal of effort. We are getting results.

[Problem that the invention seeks to solve]

The present invention is a further improvement on what was previously proposed by the applicant, and the operation of the passenger vehicle body and the rice transplanting work machine are performed 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 shock at the start of travel, with a simple configuration. .

[Means for solving problems]

To achieve this purpose, the switching mechanism is provided with a delay mechanism, so that the selection of the switching position of the switching mechanism can cause the main clutch mechanism to be shut off, the auxiliary seedling platform to be tilted, the auxiliary seedling platform to return to the horizontal position, and then The main clutch mechanism is engaged, thereby delaying the return and engagement of the clutch mechanism.

〔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 stand 10 is installed on the rear of the passenger vehicle body 1, and the front end of the auxiliary seedling stand 10 is supported by the passenger vehicle body 1 by two left and right columns 11. is now bendable.

As shown in FIGS. 1 and 2, 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 the electromagnetic four-way switching valve 1.
A return flow path 1 is provided between the oil return side of the switching valve 14 and the tank 17, and is connected to an oil supply mechanism 16 switchably equipped with a pump 15 via the switch valve 14.
8 is provided with an aperture 19 as a delay mechanism. 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 is provided in the flow path between the switching valve 14 and the lifting cylinder mechanism 9. 21 and an elevation switching valve 22 are provided. The main clutch mechanism 5 includes a clutch rod 24 connected to a clutch pedal 23.
and a return spring 25 connected to this rod 24, the piston 2 of the clutch cylinder mechanism 13
6 faces the distal end of the clutch pedal 23. An interlocking cable 27 connected to the piston 26 is connected to a release lever 28 of the tilting check valve 20 , and this lever 28 is pivotally connected to the valve housing 29 of the tilting check valve 20 . Therefore, the tilting check valve 20 is opened via the release lever 28. The tilting cylinder mechanism 1
An operating lever 32 connected to an operating rod 31 to a piston 30 of No. 2 is pivotally connected to a cylinder 33 of a tilting cylinder mechanism 12, so that the lifting check valve 21 is opened and closed by swinging of the operating lever 32. It's summery. The electromagnetic four-way switching valve 14 is configured to be switched by a signal from a detection means 34 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. Note that 35 in FIG. 2 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 number of pine seedlings corresponding to one of the plurality of planting rows among the remaining pine seedlings falls below a predetermined amount, the detection means 34 having an open/close switch etc. is activated, and the seedling mounting table 6 is moved 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, the operation of the rice transplanting work machine 3 is automatically stopped, and the auxiliary seedling mounting table 10 is tilted so that the rear part is located downward. That is, by the operation of the detection means 34, the electromagnetic four-way switching valve 1 is activated via appropriate electrical means.
4, the pump 15 of the oil supply mechanism 16 and the clutch cylinder mechanism 13 of the main clutch mechanism 5 are communicated, and the tilting cylinder mechanism 12 and the lifting cylinder mechanism 9 are communicated with the tank 17. 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, the traveling of the traveling body 1 by the traveling device 4 is stopped, and the rice transplanting machine 3 is stopped.
operation will also stop. Further, since the interlocking cable 27 is pulled by the advance of the piston 26 of the clutch cylinder mechanism 13, the release lever 28 rotates and the tilting check valve 20 opens. Therefore, due to the weight of the auxiliary seedling stand 10, oil flows from the cylinder 33 of the tilting cylinder mechanism 12 to the tank 1 through the switching valve 14.
7 and the piston 30 of the tilting cylinder mechanism 12 is compressed, thereby bending the support 11 and tilting the auxiliary seedling stand 10 as shown by the chain line in FIG. The auxiliary seedlings slide onto the seedling table 6 and are supplied thereto.

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 . Clutch cylinder mechanism 13
is connected to the tank 17 via the switching valve 14 and the throttle 19.
The spring force of the return spring 25 causes the piston 26 to move back and forth via the clutch rod 24, but in this case, the throttle 19 provides resistance to the oil returning to the tank 17. ,
The piston 26 is moved in and out slowly. Therefore, the engagement of the main clutch mechanism 5 is delayed, and after the auxiliary seedling platform 10 has reliably returned to the horizontal position, the operation of the vehicle body 1 and the operation of the rice transplanting machine 3 are resumed by the engagement of the main clutch mechanism 5. be done. In addition, in the above-mentioned operation, the lifting check valve 21 works in conjunction with the piston 30 of the tilting cylinder mechanism 9 that raises and lowers the auxiliary seedling platform 10, so that it closes when the auxiliary seedling platform 10 is tilted and opens when it is horizontal. As a result, oil flows to the lifting switching valve 22 only in this horizontal state.
The operation of this valve 22 automatically controls the lifting cylinder mechanism 9 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.In particular, the switching mechanism has a delay mechanism. It has a simple structure in which the switching position of the switching mechanism is selected by providing a clutch, and the main clutch mechanism is shut off until the auxiliary seedling platform has fully returned, so that the auxiliary seedlings can be protected even by the shock at the start of travel. The effect is that the auxiliary seedlings do not fall from the mounting table, and that the traveling vehicle body and the rice transplanting machine can be restarted without any hindrance after the auxiliary seedlings have been replenished.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway schematic side view showing an embodiment of the present invention, and FIG. 2 is a diagram of the hydraulic circuit configuration thereof. DESCRIPTION OF SYMBOLS 1... Passenger vehicle body, 2... Support link mechanism, 3... Rice transplanting machine, 4... Traveling device, 5... Main clutch mechanism, 6
... Seedling stand, 7... Planting body, 8... Float, 9... Lifting cylinder mechanism, 10... Auxiliary seedling stand, 11...
Pillar, 12... Tilting cylinder mechanism, 13... Clutch cylinder mechanism, 14... Solenoid four-way switching valve, 15...
pump, 16...oil supply mechanism, 17...tank,
18... Return flow path, 19... Throttle, 20... Tilt 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, 29...Valve housing, 30...
Piston, 31... Operating rod, 32... Operating lever, 3
3...Cylinder, 34...Detection means, 35...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 that operates the clutch mechanism and the tilting mechanism provided in the main clutch mechanism, and between this actuation mechanism, the auxiliary seedling platform tilting mechanism, and the clutch mechanism; a switching mechanism that detects the amount of seedlings on the seedling platform and switches the operation of the tilting mechanism; and a delay mechanism provided in this switching mechanism. An auxiliary seedling supply device for a riding type rice transplanter, characterized in that the operation is performed by shutting off and tilting the auxiliary seedling platform, returning the auxiliary seedling platform to a horizontal position, and then engaging the main clutch mechanism.