JPH08130945A - Wheel for paddy working machine - Google Patents

Abstract

PURPOSE: To provide a wheel for a paddy working machine capable of raising the propelling force irrespective of ill-drained or normal-drained paddy field and of improving its traveling performance. CONSTITUTION: A ring-shaped core material 9 is coveredly welded with an elastic material and a rim 10, lugs 7 wider in width than the rim 10 and lugs 8 narrower in width than the lugs 7 are integrally formed on the core material 9 so as to situate both the lugs 7 and 8 mutually a specified number apart in the circumferential direction along the rim 10; in this case, the width of the rim 10 is made wider a bit, the width of the lugs 8 is set virtually equal to that of the rim 10, and recesses 11 for holding soil are formed along the circumferential direction at the respective centers of the width direction of both the lugs 7 and 8 on the outer periphery on the respective ground contact sides of these lugs 7, 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wheel used in a paddy field working machine such as a rice transplanter. More specifically, a ring-shaped core material is coated and welded with an elastic material so that the rim and the width thereof are wider than the rim. A wide wide lug and a narrow lug narrower in width than the wide lug are integrally formed on the core material so that both the wide and narrow lugs are located on the rim at predetermined intervals in the circumferential direction. The present invention relates to wheels for paddy work machines.

[0002]

2. Description of the Related Art Conventionally, as a wheel of a rice transplanter, which is an example of the above-mentioned paddy working machine, as shown in, for example, JP-A-5-15207, a wide lug and a narrow lug are provided on the ground contact surface side. Had an almost flat outer peripheral surface.

[0003]

According to the above-mentioned conventional structure, the rim has a relatively small width, which is a little larger than the width of the ring-shaped core member, so that sufficient buoyancy can be obtained. In some cases, the amount of subduction in wetlands increased and the propulsion power decreased. Further, since the outer peripheral surface of each of the wide lug and the narrow lug on the ground contact surface side is formed to be a substantially flat surface, it is difficult to hold the soil on the outer peripheral surface side, and the propulsive force is the same as in the above case. Was sometimes reduced.

An object of the present invention is to provide a wheel for a paddy work machine capable of increasing propulsion power regardless of whether it is a wet field or an ordinary field and improving traveling performance.

[0005]

The characteristic construction of the present invention is that the width of the rim is formed wider and the width of the narrow lug is set to be the same or substantially the same as the width of the rim. A groove for holding soil along the circumferential direction is formed in the central portion in the width direction at the outer peripheral portion on the ground contact surface side of each of the narrow lugs.

[0006]

Since the width of the rim is formed wider and the width of the narrow lug is set to be the same or substantially the same as the width of the rim, the buoyancy can be increased as compared with the conventional one.
Even in wetlands, the amount of subduction can be reduced and the propulsive force can be increased.

Since a groove for retaining soil is formed in the widthwise central portion of the outer peripheral portion of each of the wide lug and the narrow lug on the ground contact surface side, the soil can be reliably retained by the outer peripheral portion. As a result, the propulsive force can be increased, and since the groove is along the circumferential direction, the straightness can be improved.

By forming the groove as described above, a large number of independent protrusions are formed on the outer peripheral portion on the ground contact surface side, which facilitates traveling even on the road.

[0009]

[Effects of the Invention] Therefore, as described above, the propulsive force / straightness can be improved and the vehicle can be easily driven on the road. Therefore, the traveling performance can be improved regardless of whether it is a wet field, a normal field or a road. We were able to provide work equipment wheels.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 3, an engine 3 is provided at the front of the body supported by a pair of left and right steerable front wheels 1 and a pair of left and right rear wheels 2, and a control section 4 is provided at the center of the body. The link mechanism 5 is connected to the rear part so that the link mechanism 5 can be lifted and lowered, and the seedling planting device 6 is connected to the link mechanism 5 to form a riding-type rice transplanter, which is an example of a paddy field working machine.

As shown in FIGS. 1 and 2, the rear wheel 2 is
A ring-shaped metal pipe core material 9 is coated and welded with rubber as an elastic material to form a rim 10, a wide lug 7 wider than the rim 10, and a narrow lug narrower than the wide lug 7. 8 and the wide and narrow lugs 7 and 8 are the rim 1
They are formed integrally with the core material 9 so that they are located at a predetermined number in the circumferential direction.

The rubber is welded to the core material 9 in a large amount to form a wide rim 10 and the width of the narrow lug 8 is set to be substantially the same as the width of the rim 10.

The wide lugs 7 are in the shape of a horizontally long rectangle whose corners are gently curved, and the narrow lugs 8 are arranged at every three intervals. In addition, wide rug 7 and narrow lug 8
In the outer peripheral portion of each of the
A groove 11 having a mountain-shaped cross section for holding soil is formed along the circumferential direction. The inner peripheral portion of the narrow lug 8 is formed in a V-shaped cross-section whose top portion is located radially inward of the inner peripheral surface of the wide lug 7 so that mud can be easily dropped to the ground contact surface side. is there.

The front wheel 1 has a ring-shaped metal pipe core material 9 coated and welded with rubber to form a rim 10 and the rim 10.
A lug 12 having a width slightly wider than that of the core material 9 is only integrally formed with the core material 9, and a lug 12 corresponding to the wide lug 7 in the rear wheel 2 is not provided because the steering performance is deteriorated.

According to the above structure, the rim 10 is formed to have a wider width and the width of the narrow lug 8 is set to the rim 10.
Since it is set to be the same as or almost the same as the width of buoyancy, the buoyancy can be increased more than before, and the amount of subduction can be reduced and the propulsive force can be increased even in a wetland.

Since the soil-holding grooves 11 are formed in the widthwise central portions of the outer peripheral portions of the wide lugs 7 and the narrow lugs 8 on the ground contact side, the outer peripheral portions of the outer peripheral portions are formed. The soil can be held securely and the propulsive force can be increased. Moreover, since the groove 11 extends along the circumferential direction, straightness can be improved.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of drawings]

[Fig. 1] Front elevational view of the rear wheel of a passenger rice transplanter

FIG. 2 is a perspective view showing a part of a rear wheel of a riding type rice transplanter.

FIG. 3 is an overall side view of a riding rice transplanter.

[Explanation of symbols]

 9 Core material 10 Rim 7 Wide lug 8 Narrow lug 11 Groove

Claims (1)

[Claims] 1. A ring-shaped core material (9) is coated and welded with an elastic material to form a rim (10), a wide lug (7) wider than the rim (10), and the wide lug (7). A narrower lug (8) having a width narrower than that of (1), so that both the wide and narrow lugs (7), (8) are located on the rim (10) at predetermined intervals in the circumferential direction. A paddy field wheel integrally formed with the core material (9), wherein the rim (10) is formed to have a wider width, and the narrow lug (8) has a width of the rim (10). The width of the soil holding groove is set to be the same as or substantially the same as the width of each of the wide lugs (7) and the narrow lugs (8) at the outer peripheral portions on the ground contact surface side in the widthwise central portion along the circumferential direction. A wheel for a paddy work machine in which (11) is formed.