JPS599B2 - Walking rice transplanter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is capable of planting seedlings by constantly maintaining the attitude of the device toward the mud surface, regardless of the left and right tilting of the traveling body having a pair of left and right traveling wheels and a steering bundle. When planting seedlings at the rear of the traveling aircraft, the device is moved along the longitudinal axis to prevent variations in depth when planting in the left and right directions, which is caused by the device tilting along with the aircraft. In addition to being pivotally connected around the core, soil leveling floats are arranged below the device for planting seedlings, at the center position between the left and right wheels, and at the left and right inner and outer positions thereof. The purpose of this walk-behind rice transplanter is to make it possible to easily maneuver the machine during rice planting work in fields where the tiller is generally tilted from side to side, such as on sloping land.

In other words, during rice planting work in a field where the plowing surface is tilted left and right, such as on a slope, the traveling machine tilts left and right.
As the center of gravity shifts, the traveling aircraft receives a force that tends to cause it to meander downwards, making it extremely difficult to maneuver as it is necessary to keep applying a force to the bundle to resist this meandering force and keep it moving straight. .

The present invention aims to solve the above-mentioned operational problems in the field by simply improving the float. It is characterized in that the floats on both sides are attached to the device side for planting seedlings.

As a result, when the traveling body tilts left and right due to the slope of the plowing surface, the traveling body receives a meandering force downward in the direction of inclination, but this meandering force is absorbed by the central float, which tilts together with the traveling body. This can be offset or reduced by the increase in ground resistance at the part of the bundle that enters the mud, so as mentioned above, it is necessary to continue applying a force to the bundle that is sufficient to resist the meandering force and make it run straight. The aircraft should be able to maneuver easily on slopes and other terrain.

However, as mentioned above, since only the central ground leveling float, which is located at the point where the vertical fluctuation is the smallest when the aircraft tilts from side to side, is attached to the traveling aircraft side, even when the traveling aircraft tilts from side to side, There is very little variation in the depth of planting in this direction, and by configuring the seedling planting device so that it can swing freely around the longitudinal axis, it has become possible to reliably achieve the intended purpose.

Hereinafter, embodiments of the present invention will be described based on the drawings.
A rear end of a pipe-shaped frame 6 which also serves as a transmission case and which extends rearward from the mission case 2 of a traveling body 5 in which supporting cases 4, 4 for a pair of left and right traveling wheels 3, 3 are attached so as to be vertically swingable. The device 1 for seedling planting consists of a seedling stand 7A in a rearward tilted position with the seedling surface facing forward and upward, a planting claw 7B, and a case IC with these drive mechanisms inside. , is pivotably connected around the longitudinal axis 3 which is also the axis of the vibrator-like frame 6, and is passed from the rear of the pipe-like frame 6 on the traveling body 5 side to the seedling stand IAT side and its back. A steering wheel 8 is extended above the rear.

In addition, one pressure-sensitive float 9 is placed at the front central position of the traveling wheels 3, 3 to sense changes in ground pressure due to changes in the plowing depth, and the front end of the float 9 in the direction of movement of the machine is used as a fulcrum. The seedlings are planted under the device 7, and the seedlings are planted at the center between the left and right wheels 3, and at the outside of the left and right wheels. Among the floats 10A and IOB, the center float 10A for leveling the ground is connected to the control bundle 8 on the traveling aircraft 5 side.
The installation is carried out over the base end portion 8a'' and the bent portion 8b in the middle, and the flow for leveling the ground on both sides) 1
For 0B and IOB, case IC is used for planting seedlings on the device 1 side.
The frame portions 7d on both sides of the frame 7D have a hollow shape when viewed from above.

They are installed across and across the front and rear positions of 1a.

Moreover, the said land leveling floats 10A and 10B.

10B are each of these float IOA and 10B, respectively.

It is configured to be able to swing up and down around the horizontal axis of the rear end within the range of the elongated hole 18 formed in the link 11 that supports the front end of 10B. .

The height adjusting device for the running wheels 3, 3 is constructed as follows.

That is, a movable member 12 provided so as to be slidably movable only in the direction of movement of the aircraft is connected to the tip of the piston rod lla of the hydraulic cylinder 11 which is pivotally supported by the pipe-shaped flailer 6, and both ends of this movable member 120 and the wheel support case 4,
4 side arm 4a.

A swing operating rod 13.13 for vertically swinging the wheels 3, 3 by pushing and pulling is installed between the 4a and the switching arm 15 of the valve 14 that controls the expansion and contraction operation of the hydraulic cylinder 11. and the pressure sensitive float 9
are interlocked and connected via the sensing rod 16, thereby automatically switching the valve 14 in conjunction with the vertical fluctuation of the pressure-sensitive float 9 above a certain level due to the fluctuation of the plowing depth. The pair of wheels 3, 3 are configured to be raised or lowered simultaneously in opposite directions relative to the pressure-sensitive float 9.

[Brief explanation of the drawing]

The drawings show an embodiment of the walking rice transplanter according to the present invention, and the first
The figure is an overall side view, FIG. 2 is a partially cutaway plan view, FIG. 3 is an enlarged partially cutaway side view of the main part, and FIG. 4 is a rear view. 3... Running wheels, 5... Running body, 7
... Seedling planting equipment, 8 ... Maneuvering bundle, 9 ... Pressure-sensitive float, IOA, 10B.
...Planting is carried out using floats for land preparation.

Claims (1)

[Scope of Claims] 1. A seedling planting device is pivotally connected to the rear of a traveling machine having a pair of left and right traveling wheels 3, 3 and a steering bundle 8 so as to be swingable around an axis in the longitudinal direction. , This seedling planting is carried out by placing soil leveling floats 10A, 10B, and 10B at the center position between the left and right wheels 3, 3, and at the left and right inner and outer positions thereof, under the equipment operator. In the model rice transplanter, the center soil leveling float 10A is moved by the machine i.
Attach to the side and floats 10B on both sides. A walk-behind rice transplanter characterized in that 10B is attached to the γ side of the device for planting seedlings.