Roller for omni-directional wheel

Abstract

The invention relates to an omni-direction wheel, in particular to a roller for an omni-directional wheel. The roller for the omni-directional wheel comprises a rolling wheel, the rolling wheel comprises a rolling wheel outer sheath and a rolling wheel body, the outer diameter of the middle part of the rolling wheel is larger than those of two ends of the rolling wheel, the rolling wheel outer sheath is arranged on the outer layer of the rolling wheel body, two ends of the rolling wheel body are respectively provided with a bearing cavity serving as a shaft hole simultaneously, the rolling wheel body is internally provided with a hollow cavity which is sealed when both the bearing cavities at two ends are sealed, and each bearing cavity is provided with an internal boss in which a shaft hole is arranged. The outer edge of the rolling wheel adopts a track of an involute, in this case, the rolling wheel projects a circular counter line on the side face of a hub, and owing to the arrangement of the hollow cavity, not only the material is saved, but also the elasticity of the rolling wheel is enhanced. The bearing cavities at two ends are internally provided with bearings and a rolling wheel shaft penetrates through the bearings and the shaft holes in the internal bosses to support the rolling wheel. According to the technical scheme of the invention, periodical jumping of the rolling wheel on a hub shaft is avoided, the impact on the rolling wheel is small, the utilization rate of driving power is high and the drive payload becomes larger, thus the universal wheel is more scientific and reasonable in use.

Description

technical field [0001] The present invention relates to an omnidirectional wheel, in particular to a roller for an omnidirectional wheel. Background technique [0002] Omni-directional is a driving method that can move directly in any direction. Omni-directional wheel is a mechanism that evenly distributes several rollers around a hub. The hub is driven by power transmission, and the rollers are installed on the end surface of the hub. , can rotate freely. Omni-directional wheels are the basis for realizing omni-directional walking. At present, in our country, most of the omnidirectional wheels are experimental products with light load and low power, which are mainly used in the research of the motion mechanism of small robots. The roller structure is generally composed of two parts, and there will be a gap in the middle. The projected contour line of the wheel on the side of the hub is only close to a circle, so it is easy to generate periodic jumps on the hub shaft, whic...

AI Technical Summary

Problems solved by technology

At present, in our country, most of the omnidirectional wheels are experimental products with light load and low power, which are mainly used in the research of the motion mechanism of small robots. The roller structure is generally composed of two parts, and there will be a gap in the middle. The projected outline of the wheel on the side of the hub is only close to a circle, so it is easy to generate periodic jumps on the hub shaft, which will cause periodic impact on the rollers, resulting in a lot of loss of driving power, reducing the driving payload and increasing the difficulty of driving.

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