JPH0445706A - Traveling device of rice transplanter - Google Patents

Abstract

PURPOSE:To reduce pushing down of transplanted seedlings and disturbance on the surface of seedlings transplanted soil by specifying a pair of left and right front wheels and tread of a pair of left and right rolling rear wheels. CONSTITUTION:Concerning front wheels 3 and rear wheels 4 which are rotated and traveled on interrow space positions B of adjoining seedling planting rows A, tread C of the rear wheels is set wider than tread D of the front wheels. Even if the rear wheels are rolled and soil is transferred by the rear wheels inclining and moving outside, soil will not move from the outside of the truck of the front wheels.

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a running device for a seedling planting machine, in which the front wheels and the rear wheels run at the same position between the seedling planting rows, and the front wheels The tread is made wider than the tread of the rear wheels to ensure stable driving.

(Prior Art and Problems to be Solved by the Invention) In areas where the soil surface is soft, seedling transplanters can be used to plant seedlings by rolling the rear wheels relative to the vehicle body and connecting them to the rear. If the seedling planting device is maintained in a horizontal position horizontally, the rolling of the rear wheels may push down and disturb the seedlings that have already been planted on the side, or the seedlings to be planted later. This invention seeks to reduce these defects, which often disturb the planted soil surface.

(Means for Solving the Problems) The present invention provides a four-axle vehicle body 2 that runs with a seedling planting device 1 attached to the rear side, and a method for creating a row that straddles a plurality of seedling planting rows A by the seedling planting device 1. A pair of left and right front wheels 3 that can be steered freely and a pair of left and right rear wheels 4 that can be rolled with respect to the vehicle body 2 and have a tread C that is narrower than the front wheels 3 are arranged so that the vehicle rotates around a position B. The configuration of the traveling device of the seedling planting machine is as follows.

(Action and Effect of the Invention) Seedling planting by the seedling planting device 1 is performed by connecting the seedling planting device 1 to the rear side of the vehicle body 2 and performing seedling planting work while driving.

For example, a plurality of seedling planting rows A, such as two or three, are planted between the left and right treads C where the front wheels 3 and rear wheels 4 pass, and these front wheels 3 and rear wheels 4 are used for planting seedlings. It rotates through the inter-row position B between the planting row A and the seedling planting row that is planted adjacent to this outside.

In a place where the earth-breaking tiller is tilted from side to side, the rear wheels 4 roll with respect to the vehicle body 2 and tilt to one side, but at this time, at the ground contact part of the rear wheels 4 that tilt outward, the soil moves outward. However, since the wheel marks left by the opposing front wheel 3 have already been formed close to the outside in this part, the soil scraped by the rear wheel 4 is transferred to the front wheel 3.
It is in a state where it is prevented from being moved outside of the axle mark.

When the rear wheel 4 rolls in this way, even if it moves the soil outward and pushes some of the soil onto the soil surface where it will be planted subsequently, there will already be axle marks formed by the front wheel 3 on this outer side. Therefore, the movement of the soil is prevented by the axle marks, and stable seedling planting can be performed without disturbing the seedling planting position by the seedling planting device 1.

Further, since the tread of the front wheels 3 is wider than the tread C of the rear wheels 4, the running posture of the vehicle body 2 can be stabilized, and the shaking of the vehicle body 2 due to rolling of the rear wheels 4 can be reduced.

(Example) In addition, when turning, the vehicle body 2 has a front wheel 3 that can be freely steered by a steering handle 5 at the front, and a driver's seat 6, an engine 7, a rear wheel 4, etc. at the rear. The front wheels 3 and the rear wheels 4 are powered by an engine 7 via a transmission device, thereby achieving a four-wheel drive driving mode.

At the rear end of the vehicle body 2, a rear wheel 4 is mounted on an axle 8 at both left and right ends.
The left and right center parts of the rear wheel support frame 9 mounted on the rolling shaft 1 are connected to the rolling shaft 1.
Provided to be rotatable around 0. The axle cases 11, which are located at both ends of the rear axle support frame 9 and on which the axle 8 is mounted, are input from a front transmission case 12 at the front of the vehicle body via a transmission shaft 13.
A transmission device for transmitting the axle 8 is installed inside.

A pair of upper and lower parallel links 15 are vertically movably connected to a mast 14 integral with the vehicle body 2 or rear axle support frame 9, and connected to a link member 16 at the rear end thereof.

The seedling planting machine 17 of the seedling planting device 1 is rotatably provided around a rolling shaft 18, and a part of the parallel link 15 is attached to the rear wheel support frame 9.
The seedling planting device 1 is supported through a lift cylinder 19 that is expanded and contracted by hydraulic pressure, and the seedling planting device 1 is raised and lowered with respect to the vehicle body 2 by the expansion and contraction of the lift cylinder 19 . A rolling cylinder, a rolling control device, or the like may be provided between the seedling planting machine 17 and the link member 16 to control and maintain rolling of the seedling planting device 1 horizontally in the left and right directions.

The seedling planting machine 17 is supported by a lower float 20, has a seedling tank 21 on the upper side for accommodating and feeding out seedlings, and has a plurality of rows at the rear for separately planting the seedlings supplied from the seedling tank 21. A seedling planting device 22 for planting is provided, and seedlings are planted on a soil surface leveled by sliding with a float 20. In addition, the hydraulic control valve 23 of the lift cylinder 19 is controlled by the vertical movement of the float 20 relative to the seedling planting machine 17 so that the seedling planting machine 17 is maintained at a constant height above the soil surface. Keep seedling planting depth constant.

Lateral installation of the seedling planting device 22 and the seedling tank 21 of the rotating seedling planting device 1 When planting several seedlings in rows, the seedling planting device 22 for two rows in the center is installed on the left and right front wheels 3. and is located within the tread of the rear wheel 4, and the outer left and right stripes are located outside the front wheel 3 and the rear wheel 4. In addition, the rear wheels 4 are located at the left and right center of the row spacing B between the left and right seedling planting rows A, and the front wheels 3 are deviated outward from the position of the rear wheels 4 at this spacing B. The tread D of the front wheel 3 is set wider than the tread C of the rear wheel 4. Also, the rotational diameter of the front wheel 3 is the same as that of the rear wheel 4.
The wheel width is also narrower than the rotating diameter of the wheel.

The rear wheel 4 has wide lugs 24 arranged thereon.

25 is the floor, 26 is the handle post, 27 is the cockpit 6
A lift lever provided on the side of the seedling planting device 1 is used to manually control expansion and contraction of the lift cylinder 19 to raise and lower the seedling planting device 1 between a non-working position and a working position. 28 is a starter knob for starting the engine 7. Reference numeral 29 denotes a guide frame that guides the seedling tank 21 in reciprocating movement in the lateral direction, in which the seedling take-out port 30 of the seedling planting device 22 is arranged, and the seedlings corresponding to the number of plants to be planted are separated.

Further, each seedling planting device 22 is provided with a seedling planting tool 32 that is rotated and transmitted at a constant timing at both ends of a planting arm that is driven to revolve, and plants two seedlings in one rotation.

As the vehicle body 2 travels, two seedling planting rows A are planted within the range of the tread C by the rear wheels 4, and one seedling planting row E is planted outside of this. This rear wheel 4 is located at the center of the dark interrow position B between the inner planting row A and the outer planting row E. Further, the front wheels 3 travel and rotate at the same inter-row position B on the outer side than the rear wheels 4. For this reason,
The travel axle traces on the soil surface formed by the front wheels 3 and the rear wheels 4 are formed in two rows at the same row spacing position B.

When the rear wheel 4 swings due to rolling, the rear axle support frame 9 rotates around the rolling shaft 10 located at the center of the tread C. The rear wheels 4) of the machine scrape mud toward the soil surface.

At this time, it approaches or intersects with the axle marks caused by the front wheels 3, and therefore, the mud pushed outward by the rear wheels 4 is absorbed by the axle marks caused by the front wheels 3.
This will reduce the amount of soil moving further to the outside. Therefore, the seedling planting depth and posture in the outer seedling planting row E can be kept constant.

In addition, the displacement of the rear wheels 4 to the left and right due to rolling is performed within the range of the tread D of the front wheels 3, so that stable running of the vehicle body 2 during rolling can be maintained.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, in which Fig. 1 is a rear view showing a part of the function, Fig. 2 is a partial plan view, Fig. 3 is a side view of the whole, and Fig. 4 is a plan view. It is a diagram. (Explanation of symbols) 1 Seedling planting device 2 Vehicle body 3 Front wheel 4 Rear wheel A Seedling planting row B Inter-row position C tread

Claims (1)

[Claims] A four-wheeled vehicle body 2 running with a seedling planting device 1 attached to the rear side can be freely steered so as to rotate and travel at a position B between the rows straddling a plurality of seedling planting rows A by the seedling planting device 1. A running device for a seedling planting machine comprising a pair of left and right front wheels 3 and a pair of left and right rear wheels 4 that can roll with respect to the vehicle body 2 and have a tread C narrower than the front wheels 3.