JPH0114097Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a detection device for a planting depth adjustment device in a rice transplanting device.

(Prior art) In the conventionally known Japanese Utility Model Application Publication No. 49-128716, the inclination of the aircraft is detected by the relative change of a right float and a left float that are arranged in parallel, and from the results,
In order to adjust the planting depth, a structure is described in which the left and right wheels are raised and lowered independently.

In addition, conventionally known Utility Model Publication No. 47-31307,
Japanese Patent Publication No. 52-93516, Japanese Patent Publication No. 75015, Japanese Utility Model Publication No. 1987-125619, Japanese Utility Model Publication No. 1987-20819
No. 54-70920, etc., the height of the aircraft body is detected by changes in the right float and left float installed in parallel, and based on the results, the height of the aircraft is adjusted to adjust the planting depth. The structures for raising and lowering the parts are described respectively.

(Problem to be solved by the invention) The planting depth adjusting device described in the above-mentioned Japanese Utility Model Application Publication No. 128716/1987 alternately moves up and down a right float and a left float provided in parallel like a seesaw. However, with this structure, when one float moves up, the other float is forced to move down, so the other float may move down too much and it may not work smoothly. .

(Means for Solving the Problem) Therefore, in the present invention, the right float 7 and the left float 8, which are provided in parallel, are attached to both left and right ends of a connecting body 17 so as to be movable up and down within a certain range, and the connecting body 17 is fixed. A detection section 20 is installed between the coupling body 17 and the fixed section 18, and the detection section 20 is installed between the coupling body 17 and the fixed section 18 so as to be movable vertically in parallel with the section 18, and detects the vertical movement of the coupling body 17. This is a detection device for a planting depth adjustment device in a rice transplanting device which is connected to the adjustment device.

(Example) An example of the present invention will be described with reference to the drawings.
is a running vehicle, with a pair of left and right front wheels 2, 2 at the front.
A pair of left and right rear wheels 3, 3 are provided at the rear, respectively.

As is well known, when the wheels are of the left and right type, the wheels are mounted on chain cases 4, 4 that move up and down relative to the traveling vehicle body, and are automatically moved up and down by a hydraulic device.
Configured to adjust planting depth.

5 is a rice planting section attached to the rear of the traveling vehicle 1;
It has a seedling tank 6, a right float 7, a left float 8, and planting devices 9, 10, 11, 12, etc., respectively. A projecting piece 13 that stands upward is provided on the upper surface of the right float 7, and a play hole 15 that is long in the vertical direction is formed in the projecting piece 13. A projecting piece 14 that stands upward is provided on the upper surface of the left float 8, and a play hole 16 that is long in the vertical direction is formed in the projecting piece 14.

A connecting body 17 connects the right float 7 and the left float 8, and both ends thereof are inserted into the play holes 15 and 16, respectively. Therefore, right float 7
and the left float 8 can freely move up and down within the range of the play holes 15 and 16.

The connecting body 17 has its intermediate portion connected to the fixing part 1
The detecting section 20 is supported between the fixing section 18 and the connecting body 17 by supporting it with a > type link rod 19 suspended from the connecting section 17.

The connecting body 17 is supported by the >-shaped link rod 19, and when it moves up and down, it moves up and down while maintaining the parallel state as shown in FIG.

The detection unit 20 and the planting depth adjustment device are connected by a known configuration (not shown).

(effect) Next, we will discuss the effect.

Since the present invention has the above-described configuration, when the traveling vehicle 1 moves forward, the seedlings on the seedling tank 6 are transferred to the planting devices 9, 10,
Cut out one plant at a time in steps 11 and 12 and plant them on the rice field.

During the planting process, only one wheel may fit into a depression or ride on a protrusion.

In that case, the vehicle normally leans to the left and right, and one of the left and right floats moves upward while the other float moves downward. 17 and the left and right floats 7 and 8 attached thereto are connected via vertically long play holes 15 and 16, so that the left and right floats 7 and 8 are connected within the range of the play holes 15 and 16.
8 moves up and down freely, so the phenomenon in which the left and right floats move up and down in accordance with the left and right inclination of the vehicle does not occur, as is known in the art.

That is, if one wheel simply fits into a depression or rides on a convex portion, the float on one side only moves up and down within the range of play holes 15 and 16, and the detection section 20 is not activated.

However, if the paddy field becomes deeper or shallower as a whole, the left and right floats 7 and 8 will move up and down beyond the range of the play holes 15 and 16, so in that case, the connecting body 17 will be in a parallel state. The detection unit 20 is activated by moving up and down while maintaining the position, and a known planting depth adjustment mechanism is adjusted via a known mechanism.

Therefore, if the ranges of the play holes 15 and 16 are set to a desired degree, the detection section 20 will not operate in the event of a rolling phenomenon of the aircraft, but the detection section 20 will be activated appropriately depending on the depth and shallowness of the paddy field. You can get something.

(Effect) The planting depth adjusting device described in the above-mentioned Japanese Utility Model Publication No. 49-128716 has a structure in which a right float and a left float provided in parallel are moved up and down alternately like a seesaw. In this structure, when one float moves up, the other float is forced to move down, so the other float may move down too much and may not function smoothly.

However, in the present invention, the right float 7 and the left float 8, which are arranged in parallel, are attached to both left and right ends of the connecting body 17 so as to be able to move vertically within a certain range, and the connecting body 17 can freely move vertically in parallel with respect to the fixed part 18. A detection unit 20 for detecting the vertical movement of the connection body 17 is installed between the connection body 17 and the fixed unit 18, and the detection unit 20 is connected to a planting depth adjustment device. Since this is a detection device for a planting depth adjustment device in a rice transplanting device, if one wheel simply fits into a depression or rides on a convex part, the float on one side will fall into play hole 1.
It only moves up and down within the range of play holes 15 and 16, and the detection unit 20 is not activated, so there is no false detection. Since the left and right floats 7 and 8 move up and down beyond this point, in that case, the connecting body 17 is kept in a parallel state and moved up and down to activate the detection unit 20 and adjust the planting depth adjustment mechanism. If the ranges of the play holes 15 and 16 are set to a desired degree, the detection unit 20 will not operate in the event of a rolling phenomenon of the aircraft, but the detection unit 20 will be activated appropriately depending on the depth and shallowness of the paddy field. It has the effect of being obtained.

[Brief explanation of the drawing]

FIG. 1 is an overall plan view, FIG. 2 is a side view of the main part, and FIG. 3 is a longitudinal sectional front view of the main part. Explanation of symbols, 1... Traveling vehicle, 2... Front wheel, 3... Rear wheel, 4... Chain case, 5... Rice planting section, 6... Seedling tank, 7... Right float, 8... Left float, 9, 1
0,11,12...planting device, 13,14...projection piece,
15, 16...play hole, 17...coupling body, 18...fixing part, 19...>type link rod, 20...detecting part.

Claims (1)

[Scope of utility model registration request] A right float 7 and a left float 8 provided in parallel are attached to both left and right ends of a connecting body 17 so as to be able to move up and down within a certain range, and the connecting body 17 is attached to the fixed part 1.
The connecting body 1 is provided so as to be movable up and down parallel to the
In a rice transplanting device, a detection section 20 for detecting the vertical movement of No. 7 is installed between the connecting body 17 and the fixed section 18, and the detection section 20 is connected in relation to a planting depth adjustment device. Detection device for planting depth adjustment device.