JPH0120810Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a sled body structure in a single-wheel rice transplanter.

In a single-wheeled rice transplanter with one running wheel installed in the center of the machine, when turning, the machine is tilted slightly in the turning direction, but at this time,
The drawback is that the balance of the aircraft is lost and the aircraft tilts significantly, making it difficult to perform turning operations smoothly. In particular, when the seedling platform is used for planting four rows, it is difficult to balance the machine, and if the seedling platform is tilted too much, the end of the seedling platform will stick into the rice field, further hindering the turning operation. That's what happens.

Therefore, in this proposal, by providing sled bodies on both the left and right sides of the machine body, the tilt of the machine body when turning is supported by the sled bodies, and smooth turning can be performed. By moving the running wheels up and down in accordance with the swinging motion of the running wheels, the machine is able to maintain a constant inclination regardless of the depth of the plowing platform, while making stable turns.

The present invention will be explained below based on embodiments shown in the drawings.

A is a single-wheeled rice transplanter with running wheels 1 installed at the center of the machine body a in the width direction, and an engine 2 at the front of the machine body a.
and a seedling stand 3 for planting 4 rows at the rear of the aircraft a.
A planting device 4 is provided at the bottom of the seedling mounting table 3. 5 is a control handle extending behind the rear end of the aircraft a, and 6 and 6 are floats disposed on the left and right sides of the running wheels 1 at the bottom of the aircraft a, while supporting the aircraft a. Skiing on rice field surface G.

7 is a swing mechanism that moves the traveling wheel 1 up and down according to the unevenness of the tiller g, and a swing case 8 is provided with a power transmission structure to the traveling wheel 1 inside.
The base end of the transmission is supported by a shaft 10 on one side of the transmission 9, the running wheel 1 is supported at the tip of the swing case 8, and a hydraulic cylinder 11 is connected to the middle of the swing case 8. The wheel 1 is moved up and down about the base end shaft support 10 of the swing case 8 by the expansion and contraction of the hydraulic cylinder 11.

Reference numerals 12 and 12 indicate sled bodies each having a flat sled plate 12b provided at the tip of a curved support rod 12a. It is also located slightly above and extends towards the rear.

That is, as shown in Fig. 2, the fuselage frame 1
4, a support shaft 15 is extended in the left-right direction, and the sled body 12 is attached to the support shaft 15, and an actuation arm 16 is erected from the base end of the support shaft 15.
6 is connected to a hydraulic cylinder 17, and this hydraulic cylinder 17 is operated at the same time as the above-mentioned swing hydraulic cylinder 11, so that the pivot 15 is rotated by the expansion and contraction movement of this hydraulic cylinder 17, and the swing is rotated. The body 12 is moved in the opposite direction to the operating direction of the wheel 1, that is, when the wheel 1 moves upward, the sled body 12 is moved downward, and when the wheel 1 moves downward, the sled body 12 is moved upward.

Therefore, even if the wheel 1 moves up and down due to the unevenness of the tiller g, that is, the change in the depth of the tiller g from the paddy field surface G, the paddy field surface G of the sled plate 12b at the tip of the sled body 12 The positional relationship will be kept constant.

Furthermore, the structure for attaching the sled body 12 to the arm 13 or the support shaft 15 is achieved by welding one metal fitting 18 of the half metal fittings 18, 18' to the base end of the curved support rod 12a.
These two metal fittings 18, 18 are used to connect the arm 13 or the support shaft 1.
By tightening bolts 19 and nuts 20 while holding 5, the sled body 12 is attached to arm 1.
3 or the support shaft 15 in a detachable manner, and the structure allows adjustment of the mounting position in the left and right direction and the height of the sled body 12.

Therefore, when the machine a is turned during rice transplanting work, the machine a is tilted slightly in the direction of the turn. Aircraft a
Since the sled body 12 is supported, excessive inclination is suppressed, and since resistance is generated on the sled body 12, it is possible to turn around the sled body 12 as the turning center. Furthermore, even if the wheel 1 swings up and down due to the unevenness of the tiller g during this turning, the sled body 12 also moves up and down in response to this swinging motion, so that the relationship between the paddy field surface G and the sled body 12 is The positional relationship between the two is always maintained constant, and this allows the machine body a to be maintained at an appropriate inclination regardless of the depth of the plowing platform and to perform stable turning travel.

As described above, according to the present invention, since the tilt of the aircraft during turning can be supported by the sled body, excessive inclination of the aircraft can be prevented, and it is also possible to perform turning travel with the sled body as the turning center. This has the effect of enabling smooth and easy turning, and it also has the effect of maintaining the aircraft at an appropriate inclination regardless of the unevenness of the tiller, allowing stable turning. .

[Brief explanation of the drawing]

FIG. 1 is an overall plan view showing a single-flower rice transplanter according to an embodiment of the present invention, and FIG. 2 is a side view of the same. A: Single-wheel rice transplanter, a: Machine body, 1: Running wheels,
7: swing mechanism, 12: sled body, 12a: curved support rod, 12b: flat sled plate, g: tiller.

Claims (1)

[Scope of utility model registration request] In a single-wheel rice transplanter with a wheel 1 provided in the center of a machine body a, the wheel 1 is pivotally supported at the lower end of a swing case 8 whose base end is rotatably pivoted to the machine body a, and the hydraulic pressure connected to the swing case 8 is The wheels 1 are configured to be movable up and down by the expansion and contraction of the cylinder 11, and sled bodies 12, 12 are provided on both left and right sides of the machine body a, the base ends of which are rotatably pivoted to the machine body a. A hydraulic cylinder 17 is interlocked and connected to the base end of the sled bodies 12, 12 so that the tips of the sled bodies 12, 12 can be moved up and down, so that the sled bodies 12, 12 are moved up and down in the opposite direction to the wheels 1. A sled body structure in a single-wheel rice transplanter characterized by the following structure.