Wheel-track combined electric wheelchair

Abstract

The invention relates to an electric wheelchair, in particular to a wheel-track combined electric wheelchair which can not only travel on a flat ground in a hub mode, but also cross obstacles and climb stairs in a track mode. The wheel-track combined electric wheelchair mainly comprises a wheel-track switching module, two track modules, a seat balance module, a chassis and a control box. The wheel-track switching module comprises two parallelogram mechanisms, a front coupling, a rear coupling, a switching crank and a switching push rod, the two parallelogram mechanisms are symmetrically distributed on two sides of the electric wheelchair, and the two track modules are symmetrically distributed on two sides of the electric wheelchair and comprise tracks, track driving wheels, a track driven wheels, track driven wheel inner plates, track driven wheel outer plates, track supporting plates and stepping motors. A hub traveling mode and a track travelling mode are simultaneously set on one device, the two modes can be automatically switched through a switching mechanism, and the electric wheelchair is compact in structure and convenient to use.

Description

technical field [0001] The invention relates to an electric wheelchair, in particular to a wheel-track composite electric wheelchair capable of walking on level ground in a hub mode, and capable of surmounting obstacles and climbing stairs in a crawler mode. Background technique [0002] Population aging is increasingly becoming one of the major crises facing the world today. As the most populous country in the world, it has a large population base and is affected by the birth policy. At present, the age structure of my country's population is aging day by day. At the same time, in recent years, the number of disabled people caused by various accidents such as production accidents, traffic accidents, and sudden natural disasters has been increasing year by year, and the proportion of the population is also on the rise. For these elderly and disabled people with handicapped legs and feet, wheelchairs are the preferred means of mobility for them to solve their mobility prob...

AI Technical Summary

Problems solved by technology

The invention patent "electric stair climbing wheelchair" with the patent application number 200910154542.3 adopts a wheel-track compound stair climbing mechanism, and realizes the switching between wheel walking and crawler walking functions through a set of attitude changing mechanisms, but it does not consider The adjustment of the posture and center of gravity of the occupant on the stairs and the possible rapid flipping of the tracked chassis when the transition from the platform to the stairs in the process of descending the stairs will affect its stability in the process of climbing the stairs

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