Universal wheel

Abstract

The invention relates to the structure and shape of a universal wheel, disclosing a new universal wheel, composed of big and small waist drum rollers, batwing bracket, long and short mandrels, side cover plate, bearing, sleeve, central shaft, wheel frame and so on. Its character: the two rollers and the two mandrels fixed on the batwing bracket compose the wheel edge, the batwing bracket is linked with the side cover plate, and the bearing, the central shaft and the wheel frame are installed in the center of the side cover plate, thus composing it. It uses the two rollers to compose double-freedom mechanism, thus able to be pushed in an arbitrary direction to move without rotating the direction of the wheel when used, saving the rotary space. In addition, it has not only better stopping property to prevent the sand from intruding into the inner cavity of the rollers, but also has advantages of reasonable structure, good technique, etc.

Description

technical field [0001] The invention relates to the structure and shape of a universal wheel, in particular to the structure and shape of a new type of universal wheel that can move in any direction on flat ground with external force without turning the direction of the wheel. Background technique [0002] Traditional swivel casters are driven by external force, and its wheels must be turned to be consistent with the direction of the external force before it can be dragged by the external force to move along the direction of the external force. When the external force changes the direction of motion, the traditional swivel caster needs to be adjusted for a while. The process of the wheel direction, in this way, there is often a swing phenomenon during use, and the use is not flexible, and the direction of the traditional swivel caster is offset by a certain distance from the center of the wheel, which makes the wheel frame produce a large eccentric moment, which affects the u...

AI Technical Summary

Problems solved by technology

[0002] Traditional swivel casters are driven by external force, and its wheels must be turned to be consistent with the direction of the external force before it can be dragged by the external force to move along the direction of the external force. When the external force changes the direction of motion, the traditional swivel caster needs to be adjusted for a while. The process of the wheel direction, in this way, there is often a swing phenomenon during use, and the use is not flexible, and the direction of the traditional swivel caster is offset by a certain distance from the center of the wheel, which makes the wheel frame produce a large eccentric moment, which affects the use of the wheel frame service life, and the installation space of traditional swivel casters must leave space for the wheels to rotate around the vertical axis of the wheel frame

[0003] The inventor proposed a utility model, an invention patent and a PCT application in December 2002, application numbers: 02291781.0, 02130670.2 and PCT / CN02 / 00880 three "a new type of universal wheel" with the same structure, and its embodiment is The Y-shaped bracket is installed on the small drum-shaped roller, but there are shortcomings in this Y-shaped bracket. This bracket will pass between two large drum-shaped rollers and be fixed at the center of the half hub groove, so that The structure of the wheel will affect that other parts, such as rolling bearings, cannot be installed in the center of the wheel. At the connection between the large and small drum-shaped rollers, the end faces of the large drum-shaped rollers have a large gap, which is easily invaded by sand and soil, which affects the rotation of the large and small rollers. , the structure and process of the half-hubs on both sides are complicated, which increases the processing cost accordingly

[0004] According to Chinese patents and other relevant data retrieval, except for my invention, there is no report of a new type of universal wheel in which a single row of rollers can be pushed to move in any direction with an external force without turning the direction of the wheel when in use.

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