JPS61104715A - Running apparatus of seedling planter - 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 a traveling device such as a seedling planting machine.

Problems to be Solved by the Invention Side sensor floats are arranged outside of the sensor floats in the center of the fuselage, and the vertical movement of these floats causes the running wheels on each corresponding side to move relative to the fuselage. In a seedling transplanter that controls the ground pressure of these floats at a constant level by raising and lowering them, the central sensor float moves up and detects high pressure with the soil surface, lowering the left and right running wheels. When the aircraft is lifted up, the side sensor float floats up and hangs down, so the detection sensitivity of the high ground pressure with the soil surface due to the upward movement of the float becomes dull, and this pressure detection result Lowering control to the corresponding wheel becomes slow, making it difficult to perform rolling control using the side sensor float.

In addition, when sensor floats on the center side are installed on the left and right sides of the aircraft, when the side sensor float on one side is lifted up on the ridge when the value is at the ridge, the upward movement of this float will create a high ground pressure with the soil surface. , and based on this detection result, the corresponding side wheel is lowered, but the central sensor float on the side float side detects that one of the aircraft is tilted and hanging down, and the ground contact pressure with the soil surface is low. Since the axle that is about to be lowered is controlled to the side where it is raised, the wheels do not come into contact with the tiller, and the driving force is lower than that of the axle on the other side, making it difficult for the aircraft to move straight. be.

Means for Solving the Problem The present invention provides a sensor float (4) that lowers and raises the running wheel (2) with respect to the body (2) due to vertical movement due to sliding contact pressure with the running soil surface. The configuration of a traveling device such as a seedling planting machine is such that a side sensor float (4) on the outer side is provided below a central sensor float (3) on the width center side.

Functions and Effects of the Invention The aircraft ■ responds when the central sensor float ■ and the side sensor floats (4) slide on the soil surface, and when the side sensor floats (4) move upward and detect high ground pressure. The side wheel ■ is lowered, and when a drop in ground pressure is detected by moving downward, the corresponding side wheel ■ is raised and the aircraft ■ is controlled to roll against the soil surface, and the central sensor float ■ moves upward. If high ground pressure is detected, the left and right running wheels will be turned off)
When a decrease in ground pressure is detected, the left and right axles (1) are raised together, and the aircraft ■ continues to travel on the soil surface, but the side sensor float @ is lower than the central sensor float ■. When the aircraft ■ descends,
Due to the upward movement of this float (4), high ground pressure can be detected earlier than the center sensor float (J) and the corresponding wheel (D
You can lower the aircraft and raise the aircraft.

When planting along the ridge, use the side sensor float (4) on the negative side.
When it climbs onto a ridge, the aircraft body ■ tends to tilt, but the detection of a high ground pressure with the soil surface due to the upward movement of this sensor float (4) is faster than the detection of a drop in ground pressure due to the sagging state of the central sensor float ■. Since it can be done quickly, the wheel (D) on the side that is on the ridge is lowered so that it can contact the tiller, and the side sensor float (4) on the other side is moved up to detect high ground pressure with the soil surface. Based on this detection result, the axle (1) on the corresponding side is lowered, so that the aircraft (2) can run while being controlled by rolling.

Embodiment In the illustrated example, a traveling transmission case (l) is provided on the front side of one aircraft (l), an engine (l) is mounted on the front of this transmission case (l), and a planted transmission case is mounted on the rear side. (2) is provided, and the base of the handle (8) is fixed to the rear side of this transmission case (2).

The base of a chain case (9) is pivotally attached to both sides of the traveling transmission case 6), and a left and right traveling axle (2) is mounted at the rear end of the chain case (2) for interlocking movement.

At the lower left and right sides of the planting transmission case ■, there is a seedling rod that swings up and down via a crank mechanism, and the handle ■
A seedling tank (■) is arranged in a backward-slanting manner along the upper part of the tree and is supported so as to be movable from side to side. It is connected through.

Central sensor floats (4) are installed on the left and right at the lower front of the aircraft (2), and side sensor floats (4) (4) are installed on the left and right at the lower rear and outside of the floats (4). and side sensor floats (4
) is pivotally attached at the rear so that it can rotate freely, and the front part is attached so that it can freely move up and down.

The base of a hydraulic cylinder (2) is fixed to both sides of the front of the body (2), and the tip of the piston is connected to an arm that is integrally attached to the base of the chain case (2).

■ is a hydraulic pump with a hydraulic switching valve.

A side-view type valve arm (2) is fixed to the switching valve (0).

One end of the valve arm (■) is connected to the tip of a swinging arm (to) that is rotatable around a pivot shaft, and a spring (to) is provided at the other end of the valve arm (2). [F
] to rotate the valve arm υ to open the hydraulic switching valve [
stock] is always activated to switch to the oil drain side.

One end of an actuation wire (2) is connected to the front part of the left and right central sensor float (2), and the actuation rod (to) at the other end of the wire (0) is provided close to the left and right swing arm Ge.

In addition, one end of the operating wire (■) is connected to the front part of the left and right side sensor float (■), and the operating rod at the other end of the wire (■) is provided close to the left and right swinging arm αG, and these sensor floats (3) ) causes the operating rods 12G@ to protrude, rotate the swing arm 00 upwards, push up the rod 0, rotate the valve arm ■, and switch the hydraulic switching valve to the oil supply side. It is structured as follows.

When the engine (■) transmits power to each part and moves the aircraft (2) forward, the central sensor float (■) and the side sensor floats (■) slide on the soil surface.

The machine body ■ tries to tilt due to changes in the depth of the plowing platform pressed by the left and right running wheels ■, but when the plowing plate pressed by the left running wheels 0 becomes deeper, the right axle ■ does not come into contact with the plowing plate. Therefore, the left side sensor float (4) is moved up in advance of the left center sensor float ■ to detect the high pressure with the soil surface, and upon this detection, the operating rod @ is protruded through the operating wire ■ and oscillates. Rotate the arm Qe upward and rotate the valve arm ■ via the rod Q71 to switch the hydraulic switching valve 0 to the oil supply side, and the oil is sent from the hydraulic pump ■ to the hydraulic cylinder ■, causing the piston to protrude. Rotate the chain case ■ downward to lower the left traveling wheel (1).

When the wheel ■ touches the tiller, the left side sensor float (
4) The upward movement of the wheel (2) stops, the hydraulic pressure switching valve 0 is switched to the cutoff side, and the downward movement of this wheel (2) is stopped.

When the plow ground pressed by the left traveling wheel becomes shallow, the machine moves upward and the right center sensor float ■ and the right sensor float (4) hang down and both move downward to reduce the pressure with the soil surface. Detect it.

Upon this detection, the operating rod +2 [)@ is retracted, the valve arm ■ is pulled by the spring [F] and rotates, and the hydraulic switching valve 0 is switched to the oil drain side, and the hydraulic pressure of the hydraulic switching valve 2 is released and the oil is drained. retract the piston, rotate the chain case ■ upward, and raise the right axle α).

When these sensor floats (■■) detect proper pressure with the soil surface, the rotation of the valve arm υ switches the hydraulic pressure switching valve 0 to the shutoff side, and the right wheel (1) stops rising.

In this way, the pressure with the soil surface is detected by the left and right central sensor floats (■) and the side sensor floats (4), and the pressure-detecting sides are raised and lowered to move the machine (■) into the seedling tank (■) while controlling rolling. Seedlings supplied from the seedlings are separated by a cutting rod (3) and transplanted onto the soil leveled by these floats (3).

The vertical movement range of the front part of the upper side sensor float may be made adjustable as in the embodiment shown in FIG. In other words, there is an adjustment lever (to) on the front side of the lower end of the side frame 0 that interlocks the seedling rods OO provided on both sides of the planting transmission case ■.
is provided to be movable up and down, and the adjustment lever (to) is connected to the adjustment plate (
C) It has a structure that can be fixed by inserting a pin into the locking hole @. The tip of the adjustment lever (to) and the receiving plate 0 are connected by the outer part of the operating wire (1), one end of the inner part is fixed to the front part of the side sensor float (4), and the other end of the operating rod is connected to the outer part of the operating wire (2). It is provided close to the left and right swing arm ω.

When the adjustment lever (4) is moved down and the pin is inserted into the locking hole (4) and fixed, the front part of the side sensor float (4) is moved down to the sensing position for ground pressure detection with the soil surface. When the adjustment lever (C) is moved upward and the pin is inserted into the locking hole (C) and fixed, the front part of the side sensor float (4) is moved upward and the ground pressure is detected. position is delayed.

If the soil surface is poorly leveled or there is a lot of straw, etc., the central sensor float ■ detects these and lowers the left and right wheels (D) to raise the aircraft ■, so the side sensor floats (4) ) may float, but by lowering the adjustment lever (c) and lowering the side sensor float (4), you can adjust the sensing position of the soil surface pressure detection with the central sensor float ■. .

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; FIG. 1 is a side view of a portion, FIG. 2 is an overall plan view, and FIG. 3 is a perspective view of a portion of another embodiment. In the figure, symbol ■ indicates the traveling axle, ■ indicates the aircraft body, (3) indicates the center sensor float, and (4) indicates the side sensor float.

Claims (1)

[Claims] Of the sensor floats (3) and (4) that lower and raise the traveling wheels (1) relative to the aircraft body (2) due to vertical movement due to sliding ground pressure with the traveling soil surface, the central sensor on the side of the center of the traveling width. A traveling device such as a seedling transplanter, which is provided with a side sensor float (4) on the outer side below the float (3).