Novel wheel-crawler compound electrically propelled wheelchair

Abstract

The invention discloses a novel wheel-crawler compound electrically propelled wheelchair, which comprises first side plates, first crawler wheels, front support rods, front wheels, first pin shafts, a first rotating plate, pinions, front axles, gearwheels, transmission shafts, couplings, main crawler belts, second crawler wheels, secondary crawler belts, third crawler wheels, hollow shafts, a long shaft, motor bases, a bottom plate, fixing plates, rear wheels, rear axles, a second rotating plate, second pin shafts, rear support rods, driven shafts, second side plates, a first transverse plate, supports, a first rotating shaft, a first electric expansion link, a second electric expansion link, a second rotating shaft seat, a second rotating shaft, a chair, a third rotating shaft, a third rotating shaft seat, a fourth rotating shaft seat and a fifth rotating shaft seat. A wheel-type walking mode and a crawler walking mode are respectively adopted by the novel electric wheelchair with a function of going upstairs during a process of walking on the flat ground and a process of going upstairs. The switchover between the two walking modes can be controlled by a rider, and moreover, a switching mechanism is simple and practical and is convenient in operation.

Description

technical field [0001] The invention relates to a novel electric wheelchair, in particular to a novel wheel-track composite electric wheelchair capable of switching between wheel walking and crawler walking and having the function of climbing stairs. Background technique [0002] With the development of population aging, the absolute number of the elderly and the proportion of the total population of the society are increasing. After reaching a certain age, many elderly people will have weakened leg strength or degraded walking function, which will cause difficulties in walking and going up and down stairs. Starting from satisfying the travel and stair climbing requirements of these elderly people, there is an urgent need to develop auxiliary devices or equipment that can help these elderly people travel and go up and down stairs. [0003] At the same time, considering the travel of the elderly and the needs of going up and down stairs, there are already some different elec...

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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