JPH0543324B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to an up-and-down device for a rice transplanting device.

(Prior art) Conventionally known Japanese Utility Model Application Publication No. 56-96920 discloses a rice transplanting device that moves up and down by switching the hydraulic switching valve, and a rice transplanting device that moves up and down by switching the hydraulic switching valve, which is installed at the rear of a passenger-type traveling vehicle body. A configuration is described in which the rice transplanting device is moved up and down by a sensor attached to a central float or a side float, and the traveling vehicle body is adjusted up and down by a sensor attached to the vehicle body.

(Problems to be Solved by the Invention) The rice transplanting device of the above-mentioned known example is configured to move up and down by switching a hydraulic switching valve, but the hydraulic switching valve is a single float attached to a central float or a side float. Because the sensor is configured to switch, even though the rice field is not deep, if a lump of straw floating on the rice field comes into contact with the detection sensor, it may be detected, and in that case, the switching valve is switched. There is a problem in that the rice transplanting device is raised using a vertical movement device to perform so-called aerial planting.

To solve this problem, a plurality of sensors may be provided at intervals before and after the sensor. If there is a configuration in which a plurality of sensors are placed at intervals in the front and back, and only when both sensors are activated, the switching valve is switched and the rice transplanting device is raised by the vertical movement device, it will not be activated by floating straw waste, and the above-mentioned aerial planting can be avoided. will disappear.

(Means for Solving the Problems) Accordingly, the present invention provides a rice transplanting device 7 that is attached to the rear part of a passenger-type traveling vehicle body 1 and moves up and down by switching a hydraulic switching valve 21, and the hydraulic switching valve 21 is connected to the rice transplanting device. 7, the sensor is configured to be switched by the operation of a sensor attached to the center float 10 or side float 11 or other float, and the sensors include a front detection sensor 12 attached to the front side and a rear detection sensor 12 attached to the rear side. The up-and-down device of the rice transplanting device has a plurality of sensors 13 spaced apart from each other, and the hydraulic pressure switching valve 21 is switched when the detection sensors 12 and 13 spaced apart from each other are operated at the same time.

(Example) To explain with the drawing, 1 is a running vehicle body, the upper part of the running vehicle body 1 is provided with a handle 2 and a driver's seat 3, the lower part is provided with front wheels 4 and rear wheels 5, A rice transplanting device 7 is attached to the rear via a vertical movement device consisting of parallel links. 8 is a seedling tank, 9 is a planting rod, 10 is a central float, and 11 is a side float 11.

Therefore, either the central float 10 or the side floats 11 is provided with a front detection sensor 12 and a rear detection sensor 13 spaced apart from each other. It may also be attached to a separate float.

Reference numeral 14 denotes a protrusion provided on the upper surface of the front side of the central float 10, 15 a protrusion provided on the upper surface of the rear side of the central float 10, the front detection sensor 12 is pivoted to the protrusion 14, and the rear detection sensor 13 is attached to the protrusion 15. The shaft is mounted 17 on the shaft.

The front detection sensor 12 and the rear detection sensor 13 are
Both wires 18 and 19 move upward by sensing earth pressure, and the lower ends of the wires 18 and 19 are connected to the rotating part, and the upper ends of the wires 18 and 19 are locked to both ends of the balance 20.

The balance 20 has a switching rod 2 of a valve 21 in its center.
2 is fixed to the shaft 23. A link 24 is fitted to the upper end of the shaft of the shaft stop 23, a wire 25 is connected to the link 24, and the wire 25 is connected to a lever 26 provided near the driver's seat 3.

(effect) Next, we will discuss the effect.

When you sit on the driver's seat 3 and move the vehicle body 1 forward while holding the handle 2, the seedlings in the seedling tank 8 are cut out one by one using the planting rod 9 and placed on the central float 10.
And plant it on the site where the ground has been leveled with side float 11.

However, as the paddy field gets deeper, the traveling vehicle body 1 sinks, and the rice transplanting device 7 attached to the rear of the traveling vehicle body 1 via the vertical movement device 6 also sinks and tries to plant deeply. The front detection sensor 12 and the rear detection sensor 13 attached to the center float 10 or side float 11 or other floats of No. 7 are strongly pressed against the mud surface, and upwardly centered around the shaft fittings 16 and 17. rotate,
The balance 20 is moved to the upward side via the wires 18 and 19, the switching rod 22 of the valve 21 is pushed in, and the oil in the oil tank 27 is sent to the cylinder 29 by the pump 28, and the vertical movement device 6 consisting of the upper and lower links is moved. The rice transplanting device 7 is moved upward to prevent it from being planted too deeply.

Conversely, when the paddy field becomes shallow, the traveling vehicle 1 rises to the surface.
The rice transplanting device 7 attached to the rear of the traveling vehicle body 1 via the vertical movement device 6 also floats up and tries to shallowly plant the rice. The front detection sensor 12 and the rear detection sensor 13 attached to the float are separated from the mud surface, rotated downward around the shaft fittings 16 and 17, and connected to the wires 18 and 19.
Move the balance 20 to the downward side via the valve 2.
1 switching rod 22 is pulled to return oil into the oil tank 27, and a vertical moving device 6 consisting of upper and lower links is moved down to lower the rice transplanting device 7 to prevent shallow planting.

When performing such work, suppose that there is no rear detection sensor 13 and the front detection sensor 1
If the switching rod 22 is actuated by only 2,
When the central float 10 rides on a mass of straw floating on the rice field even though the rice field is not deep,
Since the lump of straw raises the front detection sensor 12, the switching rod 22 is switched, and the vertical movement device 6
This causes the rice transplanting device 7 to rise, resulting in so-called aerial planting.

However, in the present invention, the rear detection sensor 13 is provided at a distance behind the front detection sensor 12, and if the front detection sensor 12 and the rear detection sensor 13 do not operate at the same time, the balance 20 switches the switching rod 22. Since it is designed so that it cannot be moved, it does not operate on lumps of straw waste, and only operates when the paddy field becomes deep or shallow, allowing the rice transplanting device 7 to move up and down accurately. .

(Effect) As mentioned above, the conventionally known Utility Model Application No. 56-96920
The one in the publication is attached to the rear of a passenger-type traveling vehicle body.
A rice transplanting device that moves up and down by switching a hydraulic switching valve,
It is equipped with wheels that move up and down by switching a hydraulic switching valve.The rice transplanting device moves up and down with a sensor attached to the center float or side float, and the traveling vehicle body moves up and down with a sensor attached to the vehicle body. Although the rice transplanter is configured to move up and down, it is switched by a single sensor attached to the center float or side floats, so even though the rice field is not deep, the clumps of straw floating on the rice field are When the rice comes into contact with the detection sensor, it may be detected, and in that case, the switching valve is switched and the rice transplanting device is raised by the vertical movement device to perform so-called aerial planting.

However, in the present invention, the rice transplanting device 7 is attached to the rear part of the riding vehicle body 1, and the rice transplanting device 7 is moved up and down by switching the hydraulic switching valve 21. is configured to be switched by the operation of a sensor attached to another float,
The sensors include a front detection sensor 12 attached to the front side and a rear detection sensor 13 attached to the rear side.
Since the rice transplanter has a plurality of spaced apart detection sensors 12 and 13, and the hydraulic pressure switching valve 21 is configured to switch when the front and rear spaced detection sensors 12 and 13 operate at the same time, floating straw waste can be prevented. In this case, both detection sensors 12 and 13 do not operate together, and both detection sensors 12 and 1 only operate when the rice field becomes deeper or shallower.
3 operate together to move the rice transplanting device 7 up and down, which has the effect of preventing aerial planting.

[Brief explanation of the drawing]

Fig. 1 is a side view of the whole, Fig. 2 is a plan view of the main part, Fig. 3 is a side view of the main part, Fig. 4 is a plan view of the valve part, Fig. 5 is a side view of the same, Fig. 6 is a hydraulic system diagram. Explanation of symbols, 1... Running vehicle body, 2... Steering wheel, 3... Driver seat, 4... Front wheels, 5... Rear wheels,
6... Vertical movement device, 7... Rice transplanting device, 8... Seedling tank, 9... Planting rod, 10... Central float, 1
1...Side float, 12...Front detection sensor, 13...Rear detection sensor, 14...Protrusion, 1
5... Protrusion, 16... Pivotal attachment, 17... Pivotal attachment, 18
... wire, 19 ... wire, 20 ... balance, 21 ... valve, 22 ... switching rod, 23 ...
Shaft stop, 24...Link, 25...Wire, 26
... lever, 27 ... oil tank, 28 ... pump, 29 ... cylinder.

Claims (1)

[Claims] 1. A rice transplanting device 7 that moves up and down by switching a hydraulic switching valve 21 is attached to the rear of a riding vehicle body 1, and the hydraulic switching valve 21 is connected to the central float 10, side float 11, or other float of the rice transplanting device 7. In the device configured to be switched by the operation of an attached sensor, the sensors include a plurality of spaced apart front detection sensors 12 mounted on the front side and rear detection sensors 13 mounted on the rear side, and the front and rear detection sensors are separated from each other. 12 and 13 are operated simultaneously, the hydraulic switching valve 21 is switched.