Stair-climbing wheelchair with spring shock absorption type changeable wheels

Abstract

The invention relates to a stair-climbing wheelchair with spring shock absorption type changeable wheels. The stair-climbing wheelchair comprises a wheelchair main body framework and the spring shockabsorption type changeable wheels, wherein the spring shock absorption type changeable wheels are mounted on the wheelchair main body framework; each spring shock absorption type changeable wheel comprises a wheel hub, a plurality of spoke ribs, a wheel rim, a plurality of shock absorber springs and arc-shaped supporting plates; the spring shock absorption type changeable wheels are connected withthe wheelchair main body framework through the wheel hubs, the wheel rims concentrically sleeve outer sides of the wheel hubs, and the wheel hubs and the wheel rims are fixedly connected by the spokeribs which are uniformly distributed; the shock absorber springs are uniformly distributed along external surfaces of the wheel rims in a radiating manner, and axial extension lines of all the shockabsorber springs are all converged at centers of circle of the wheel hubs; and one arc-shaped supporting plate is fixedly mounted at the outer end of each shock absorber spring, and a whole circle isformed by all the arc-shaped supporting plates in a non-stressed state. The stair-climbing wheelchair disclosed by the invention can be obtained by only carrying out reforming on the basis of the traditional manual-pushed wheelchair and has the characteristics of simple structure, low own weight, high operation stability and large applicable range.

Description

technical field [0001] The invention belongs to the technical field of wheelchair equipment, in particular to a spring-shock-absorbing variable-wheel stair-climbing wheelchair. Background technique [0002] At present, there are a large number of people in our country who need wheelchairs to travel. Whether it is a traditional hand-push wheelchair or an electric wheelchair, most of them can only adapt to flat roads. Once they encounter stairs, the wheelchair will not be able to continue. [0003] For this reason, some wheelchairs with the function of climbing stairs are continuously designed, but the problems of existence are also very obvious. For example, some stair-climbing wheelchairs adopt an electric crawler structure. The volume and dead weight of the wheelchair are very large. In addition, some stair-climbing wheelchairs adopt a rail-type structure. Wheelchairs need special rails to climb stairs, and most stairs are not suitable for installing special rails. As a re...

AI Technical Summary

Problems solved by technology

For example, some stair-climbing wheelchairs use an electric crawler structure. The volume and weight of the wheelchair are very large. Most stairs cannot bear this weight at all. The structure of the wheelchair is very complicated, and the operation stability is relatively poor.

In addition, some stair-climbing wheelchairs adopt a rail-type structure. Wheelchairs need special rails to climb stairs, and most stairs are not suitable for installing special rails. As a result, the scope of application of this type of wheelchair is very small, and it cannot be used normally.

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