JPS6170910A - seedling planting machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Industrial applications The present invention relates to an axle vertical movement device for a seedling transplanter.

Problems to be Solved by the Invention Detection floats are provided on both the left and right sides of the aircraft body, the ground pressure on the soil surface is detected by these floats, and the left and right traveling wheels are moved up and down separately to control the ground pressure of the left and right floats at a constant level. In the case of a seedling transplanter that runs on the soil surface, when the hardness of the soil surface is normal, the left and right detection floats raise and lower the corresponding traveling wheels individually according to the standard detection pressure on the soil surface. The aircraft is controlled to roll parallel to the soil surface, but with the pressure detection sensitivity of the left and right floats, when the soil surface is softer than normal, the detection pressure of the detection float is too strong and the detection sensitivity becomes dull.

The float sinks and pushes mud, and the axle is unable to cope with changes in the unevenness of the plowing platform, causing the aircraft to tilt.

On the other hand, when the soil surface is hard, the detection pressure is too weak and the detection sensitivity becomes high, and the axle moves up and down frequently in response to changes in the unevenness of the tiller, causing the machine to swing left and right, making it difficult to operate the machine. It is difficult to remove, and the straightness is not good.

Means for Solving the Problem This invention uses detection floats (■) on both the left and right sides of the aircraft body (ω) that move up and down due to the pressure of the soil on which it slides.
3) are controlled in conjunction with each other so that when the detection float (2) moves upward, the running wheel (3) is lowered, and when the detection float (2) moves downward, the running wheel (3) is raised. In addition, these left and right floats (2) are equipped with a sensor mechanism that detects the hardness or softness of the soil surface and works together to make it easier to perform the control interlock when the soil surface is soft and to make it difficult to perform the control interlock when the soil surface is hard. A wheel vertical movement device for a seedling transplanter is configured.

Functions and Effects of the Invention During seedling planting work, the machine body (■) normally tends to tilt due to the unevenness of the plowing platform pressed by the left and right running wheels (3), but the left and right detection floats (2) do not touch the soil surface. Detects the pressure of each wheel and controls and interlocks the vertical movement of the corresponding running wheels (3).
The machine body (4) is controlled by rolling to keep it gliding parallel to the soil surface, and the seedling planting state is always kept constant6.When the soil surface is softer than specified, the left and right detection floats (2) are linked by the sensor mechanism. The pressure detection sensitivity is both exceptionally high, and the pressure between the left and right soil can be easily detected independently, and it is possible to quickly respond to changes in the unevenness of the tiller, which reduces rolling of the machine body (1) and reduces mud pushing by the detection float ■. It can be prevented.

When the soil surface is harder than a predetermined level, the left and right detection floats (■) are interlocked by the sensor mechanism (), and by increasing the detection pressure on the soil surface, the detection sensitivities of both the left and right detection floats (■) are dulled, and the wheels (■) apply pressure. It is difficult to detect small changes in left and right unevenness, so the detection is averaged, and frequent lifting and lowering of the left and right wheels can be reduced to prevent left and right rocking of the aircraft body (1).

The aircraft (2) is controlled to roll according to the hardness and softness of the soil surface, and can always maintain a stable gliding parallel to the soil surface.

Embodiment In the illustrated example, a traveling transmission case 6) is provided on the front side of the fuselage (1), an engine (■) is mounted on the front side of this transmission case 6), and a planted transmission case (■) is installed on the rear side. The base of the handle (■) is fixed to the rear side of the transmission case (■).

The base of a chain case (2) is rotatably pivoted to both sides of the running transmission case (6), and a running wheel (2) is mounted on a shaft at the rear end of the chain case (2) for interlocking movement.

Seedling rods that swing up and down via a crank mechanism are attached to both sides of the lower side of the planting transmission case (2).

A seedling tank (1 liter) is installed along the upper part of the handle (2) in a backward-slanting manner and is supported so as to be movable left and right, and the seedling tank (2) is moved to a reciprocating horizontal movement mechanism inside the planting transmission case (2). They are connected via rods and arms.

A grounding float ■ is installed at the rear of the lower part of the aircraft (1),
The rear part of the float (2) is rotatably attached to the body ω, and the front part is attached via a link so that it can freely move up and down.

The left and right detection floats (■) are disposed below the front of the fuselage (1) and in front of the float (■), and their rear parts are rotatably pivoted to the fuselage (■), and their front parts are equipped with a continuous rod (■) and a valve. It is connected to the hydraulic switching valve via the arm.

(2) is a hydraulic cylinder, the base of which is fixed to the body (2), and the tip of the piston and the chain case (9) connected via an arm.

When the detection float (2) moves upward, the hydraulic switching valve ■ is switched to the oil supply side via the connecting rod ■ and valve arm 0, and oil is sent from the hydraulic pump to the hydraulic cylinder (G), causing the piston to protrude. Conversely, when the detection float (2) moves downward, the oil pressure switching valve (2) is switched to the oil drain side, and the oil pressure in the hydraulic cylinder (ω) is released, the oil is drained, and the piston is retracted.

The sensor mechanism) includes a hard and soft sensor float 0 whose front part is rotatably pivoted to the aircraft body ■ between the left and right detection floats ■.
The sensor float surface is biased by a spring in a direction to rotate the rear part downward.

Further, an arm ω is provided on the rear side of the left and right valve arms 0, and these left and right arms ω are connected by a connecting rod (■) so as to be freely rotatable, and between the arm [F] and the valve arm An adjustment spring 0 is installed, and one end of the arm ω and the hard and soft sensor float α are connected by an operating wire (to), and when the sensor float 0 is moved upward, the arm (to) is connected via the operating wire ω. The adjustment spring [F] is rotated to pull the adjustment spring [F], and conversely, when the sensor float O is moved downward, the adjustment spring 0 is loosened.

When the engine ■ transmits power to each part and moves the aircraft ■ forward, the grounding float ■ and the left and right detection floats (2)
slides on the soil surface, and the hard/soft sensor float O detects the hardness/softness of the soil surface while moving up and down.

When the hardness of the soil surface is 1 normal, the hardness sensor O float (2) detects the pressure on the soil surface with standard sensitivity.

When the soil surface is softer than specified, the hard/soft sensor float O rotates downward and the operating wire (to) is loosened, and the arm ω is rotated forward by the adjustment spring 0, and the left and right adjustment springs (to) are loosened. In this state, the left and right detection floats (2) can be easily moved up and down, increasing detection sensitivity and making it easier to apply detection pressure to the soil surface.

When the soil surface is harder than a predetermined level, the hard/soft sensor float O rotates upward, rotates the arm ω to the rear via the operation wire So, and pulls the left and right adjustment spring (to) to adjust the left and right detection float ■. It makes it difficult to move up and down, lowers the detection sensitivity, and increases the detection pressure on the soil surface.

During seedling work, the left and right running wheels (3) move up and down due to changes in the depth of the tiller in the field, causing the machine body ■ to tilt, but as the tiller gets deeper, the wheels ■ contact the tiller. Therefore, the front part of the detection float ■ is moved upward by the pressure with the soil surface, and the valve arm [phase] is rotated via the connecting rod ■ to switch the hydraulic switching valve ■ to the oil supply side, and the hydraulic pressure is increased. Oil is sent from the pump to the hydraulic cylinder ω, causing the piston to protrude, and the chain (2) is rotated downward via the arm, thereby lowering the running wheel (2). When the wheel ■ comes into contact with the tiller, the upward movement of the detection float ■ is stopped, the hydraulic switching valve ■ is switched to the shutoff side, and the lowering of the wheel ■ is stopped.

Conversely, when the plow becomes shallow, the traveling wheels ■ support the machine body ■ at a high position above the soil surface, so the detection float ■ is suspended downward, and the connecting rod ■ is pulled down to rotate the valve arm. Then, switch the hydraulic switching valve ■ to the oil drain side, and when the hydraulic pressure in the hydraulic cylinder is released, the piston is retracted and the wheel ■ is raised, but when the detection float (2) touches the soil surface, the float ■ stops moving downward. Then, the hydraulic switching valve ■ is switched to the cutoff side, and the lifting of the wheel ■ is stopped.

In this way, the machine moves parallel to the soil surface while detecting the pressure with the soil surface using the detection float ■, and the seedling tank ■ moves the cutting rod back and forth horizontally.
The seedlings supplied from the plant are separated and inserted into the soil leveled by the float ■.

[Brief explanation of drawings]

The figures show one embodiment of the invention, with FIG. 1 being a side view and FIG. 2 being a plan view. In the figure, symbol ■ indicates the aircraft body, ■ indicates the detection float, ■ indicates the left and right running wheels, and (2) indicates the sensor mechanism.

Claims (1)

[Claims] Running wheels (3) are mounted on both the left and right sides of the aircraft (1) by detection floats (2) that move up and down depending on the pressure of the sliding soil.
are provided in conjunction with control so that when the detection float (2) moves upward, the running wheel (3) descends, and when the detection float (2) moves downward, the running wheel (3) rises. In addition, these left and right floats (2) are equipped with sensor mechanisms (4) that operate together to detect the hardness or softness of the soil surface and to make it easier to perform the control interlock when the soil surface is soft and to make it difficult to perform the control interlock when the soil surface is hard. A wheel vertical movement device for a seedling transplanter equipped with a.