JPS6013308Y2 - Rice transplanter planting device - Google Patents

Description

[Detailed explanation of the idea] (Industrial application field) This proposal relates to a planting device for a rice transplanter.

(Prior Art) Conventionally, as shown in Japanese Utility Model Application No. 50-1421,
Some plants control floats using a single sensor that detects the mud surface.

(Problems to be solved by the invention) In the conventional method as described above, the planting depth is not constant because the float responds sensitively to unevenness of the mud surface and constantly moves up and down.

(Means for Solving the Problem) Therefore, the technical problem of the present invention is to provide a rice transplanter that maintains a constant planting depth regardless of the softness of the field or the amount of sinking of the float.

The technical means of this project to solve this technical problem is to connect the planting depth adjustment lever provided on the float fulcrum to the piston rod of the hydraulic cylinder, and connect this piston rod to the sensor that is normally placed on the field mud surface. The machine is automatically controlled by being installed in a hydraulic mechanism that is controlled by a sensor that detects the distance between the upper and lower two stages of sensors located in the field mud during normal operation and the field mud surface. .

(Effect of the invention) According to this technical means, the distance between the aircraft body and the field mud surface (
Since the sensor detects the ground height of the guide rail and automatically controls the planting depth adjustment lever, the planting depth remains constant regardless of the softness of the field or the amount of sinking of the float. It has the characteristics of:

In other words, a dead zone is formed between the sensor that is normally on the field mud surface and the sensor that is normally in the field mud, and is not affected by the amount of sinking of the float during this period, so the float constantly moves up and down. Since it is not a fixed seedling, the planting depth is constant.

In addition, because it is controlled by the float fulcrum, it can absorb the amount of seedlings and the reaction force of rolling while moving, and because it is a float roll at the planting part, it is an economical rice transplanter that requires only a small capacity actuator. can.

(Example) The embodiments shown in the drawings will be described below.

Reference numeral 1 denotes a seedling stand which, as is well known, can move left and right on a guide rail, and is supported by a frame 3 extending from a conduction case 2.

In addition, the planting claw 4 is attached to the seedling stand 1 using the planting arm 6 of the planting case 5.
The method of taking out seedlings and planting them is no different from known methods.

A planting depth adjustment lever 8 is attached to the support section of the float 7, and the front side of the float 7 is attached to a float bumper 10 via a link 9.

The planting depth adjustment lever 8 is connected to a piston rod (not shown) of a hydraulic cylinder 11, and the hydraulic cylinder is installed in a known hydraulic mechanism.

For example, oil sent from a pump through a throttle valve is inserted into the piston front and rear via an electromagnetic switching valve, and the solenoid of the electromagnetic switching valve is controlled by a sensor.

Sensors 12 and 13 detect the amount of float sinking, and the sensor 12 is normally on the field mud surface, and the sensor 13 is normally in the field mud.

And this is the frame 2 installed on the front of the conduction case 2.
It is supported by 7.

What is shown in FIG. 2 is an explanatory diagram showing the specific operation thereof, and the connection state between the planting depth adjustment lever 3 and the hydraulic cylinder 11 is different from that shown in FIG. 1.

That is, the sensor float 14 and the side float 15
．． Lever 17, 18, 19 is pivotally connected to 16, respectively,
The levers are integrally connected to a support shaft 20 that is pivotally supported on the machine frame, and the lever 17 is pivotally connected to a piston rod 22 of a hydraulic cylinder 21.

The hydraulic cylinder 21 is connected from a pump 23 to an electromagnetic switching valve 24.
The respective solenoids SO□, SO2 are connected to switches 6□, LS2 which are actuated by sensors 12.13.

In addition, 25 and 26 in the figure indicate a relief valve and an oil tank.

Now, when the float sinks, the sensor 12 receives resistance from the field surface, so it rotates counterclockwise and switches the switch LS.
1 is turned ON, the solenoid SO1 is operated, and the electromagnetic switching valve 24 is operated in the direction of raising the float.

When the sensor 12 floats to a certain position, it returns to its original position due to the force of the spring.

If the float rises too much, the sensor 13 comes out to the surface of the field, so the resistance disappears and the force of the spring causes the sensor 13 to rotate in the direction of the hour hand, turning on the switch LS2, activating the solenoid SO2, and moving the electromagnetic switching valve in the direction of lowering the float. 24 is activated.

Although the illustrated example is a riding rice transplanter, it goes without saying that the present invention can be used for other rice transplanters as well.

[Brief explanation of drawings]

FIG. 1 is a side view of the present device, and FIG. 2 is an explanatory view showing the operation of the present device. 1...Seedling stand, 2...Conduction case, 4
...planted nail, 7... float, 8,1
7... Planting depth adjustment lever 11.21...
...Hydraulic cylinder 12゜13...Sensor.

Claims (1)

[Scope of utility model registration request] The planting depth adjustment lever provided on the float fulcrum is connected to the piston rod of the hydraulic cylinder, and this piston rod is connected to the sensor that is normally above the field mud surface and the sensor that is normally located in the field mud. A planting device for a rice transplanter, characterized in that the device is automatically controlled by being installed in a hydraulic mechanism controlled by a sensor that detects the distance between the machine body consisting of a sensor and a field mud surface.