JPH01218902A - Wheel used in paddy field - Google Patents

Abstract

PURPOSE:To improve the drive force of a paddy field wheel for a rice-planting machine by molding rubber on the whole periphery, and providing rubber-made drive lugs having, therein, platelike core bodies made of fine core materials such as wires. CONSTITUTION:Rubber is molded around a rim 2 to form a rubber wheel, where rubber-made drive lugs are arranged at a specified pitch. In each lug 6 is berried a plate-like core body 7 having, therein, a core material such as piano wire being arranged in a synthetic resin board or rubber board. It is thus possible to improve a driving force.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a paddy wheel used in a rice transplanter, a seeder for paddy fields, etc.

Prior art As seen in Japanese Utility Model Publication No. 58-5604, the conventional paddy axle is a rubber wheel with rubber molded around the entire rim of the rim. A propulsion lug was provided integrally with the rubber, and a wide steel core metal was embedded in the propulsion lug so as to pass through the rim.

Problems to be Solved by the Invention In conventional paddy wheels, a wide core metal is widely embedded in the propulsion lug, resulting in wheels with propulsion lugs that have very poor flexibility. was there.

Means for Solving the Problems The present invention has taken the following technical means to solve the above problems.

That is, in the present invention, a rubber wheel is formed by molding rubber 4 around the entire circumference of a rim 2, and rubber propulsion lugs 6 are integrally provided with the rubber 4 at a constant pitch around the periphery of the rubber wheel. ,
Inside this propulsion lug 6, a plate-shaped core body 7 is provided with a large number of thin core materials 8 such as wire or piano wire inside a resin or rubber plate.
Paddy field wheels made by burying.

Functions and Effects of the Invention According to the present invention, when a large external force is applied to the propulsion lug, the propulsion lug can be flexed uniformly to exert a stable propulsion force without increasing the thickness of the propulsion lug. Additionally, the propulsion lug can be deformed as a whole, providing smooth propulsive force.

Embodiment 1 is a boss that is inserted into and fixed to the axle of the aircraft body. Reference numeral 2 denotes a rim, which is formed by deforming an iron pipe to have an elliptical cross section to form an entrestrial loop, and the boss 1 and the rim 2 are connected by spokes 3.

4 is rubber, which is molded around the rim 2 to form a rubber wheel.

Reference numeral 5 denotes spike lugs, which are provided on the outer periphery of the rubber wheel mj at small intervals so as to protrude in the radial direction.

Reference numeral 6 denotes propulsion lugs, which are integrally formed with the rubber 4 from the spike lug portions at predetermined intervals outwardly and inwardly on the left and right, and have a thickness that is equal to the thickness of the left and right outer edges and the inner edge that is the boss side. It is configured to be slightly thin.

Reference numeral 7 denotes a plate-shaped core body embedded in the propulsion lug, which is constructed by embedding a core material 8 such as piano wire or wire in a predetermined arrangement in a synthetic resin plate or rubber plate. 2 forms a fourth part (A) into which it fits. This plate-shaped core body 7 is embedded within the propulsion lug 6.

According to the upper configuration, since the plate-shaped core body 7 is in a flexible form, there is no longer a situation where the core bar causes almost no deflection as in the conventional case, and the propulsion lug 6 has a universally flexible propulsion lug. Paddy wheels are obtained and provide smooth propulsion.

In the embodiment shown in FIGS. 4 and 5, a plurality of core materials 8 are embedded in the thickness direction within the core body 7. Furthermore, in the embodiments shown in FIGS. 6 and 7, the core material 8 is bent along the recessed portion (a) of the core body 7 to improve rigidity.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, in which Fig. 1 is a side view showing a part of the wheel, Fig. 2 is a side sectional view of the main part,
Figure 3 is a rear view of the main part, Figure 4 is a side sectional view of the main part of another example, Figure 5 is a back sectional view thereof, Figure 6 is a side sectional view of the main part of another example, and Figure 7 is a side sectional view of the main part of another example. The figure is a cross-sectional view of the back. In the diagram, symbol 1 is the boss, 2 is the rim, 3 is the spoke, and 4 is the rubber. 5 is a spike lug, 6 is a propulsion lug, and 7 is a plate-shaped core. 8 indicates a core material.

Claims (1)

[Claims] Rubber 4 is molded around the entire circumference of the rim 2 to form a rubber wheel.Rubber propulsion lugs 6 are provided integrally with the rubber 4 at a constant pitch around the periphery of the rubber wheel. A paddy field wheel is constructed by embedding a plate-shaped core body 7 in which a large number of thin core materials 8 such as wire or piano wire are provided in a resin or rubber plate.