Off-road stair-climbing wheelchair capable of realizing wheel and track switching

Abstract

The invention relates to a vehicle for the disabled, particularly to an off-road stair-climbing wheelchair capable of realizing wheel and track switching and being driven independently. The off-road stair-climbing wheelchair capable of realizing wheel and track switching comprises a seat mechanism, a seat balancing mechanism, a frame, a four-wheel driven traveling mechanism, a lifting mechanism, a track traveling mechanism, a universal wheel traveling mechanism and the like which are connected with one another. The wheelchair mainly comprises two traveling mechanisms, namely, the track traveling mechanism and the four-wheel driven traveling mechanism, mutual switching usage is realized through the lifting mechanism between the two traveling mechanisms, the wheelchair can go up and down stairs, run on flat grounds, sand beaches and snowfields, climb slopes, cross countries and cross ditches and steps as well as be conveniently and automatically switched to the universal wheel traveling mechanism mode for traveling on a flat and smooth rod surface. The purpose that the disabled and the aged who are difficult in walking can have one off-road stair-climbing wheelchair which is complete in function, mature in technology and capable of being driven independently is achieved actually.

Description

technical field [0001] The invention relates to a vehicle for disabled persons, in particular to a wheel-track switchable off-road stair-climbing wheelchair that can be driven independently. Background technique [0002] So far, there are many technologies for stair-climbing wheelchairs, which can be roughly divided into two types: one is a stair-climbing wheelchair that needs assistance from others, and the other is a stair-climbing wheelchair that can operate and drive independently. There are quite a few types of stair-climbing wheelchairs of different types, and they have appeared on the market for a long time, but there are very few users. The reason is that although the price factor is also the resistance of some people to buy, the main factor is It is still technically immature and functionally imperfect. [0003] Through the research, it is found that the most suitable mechanism for walking on the stairs is the rubber track type, and its key features are: the rubber...

AI Technical Summary

Problems solved by technology

[0008] Above-mentioned two kinds of different technical forms, and the stair-climbing wheelchair vehicle that all can drive independently, though all have shown considerable advantage in respective fields, they also have the deficiency that does not possess the other side's advantage respectively simultaneously and some Aspect defects

For example, the crawler-type stair-climbing wheelchair in France and the crawler-type stair-climbing wheelchair in Italy do not have the above-mentioned functions and characteristics of the four-wheel-drive stair-climbing wheelchair, and they can only go up from the back when going up the stairs. Driving, causing visual and operational inconvenience to the occupants

However, the German Hummer four-wheel-drive stair-climbing wheelchair is obviously insufficient in going up and down the stairs. Because of its own conditions, it can only go up and down the stairs between the height of 12-15cm, and in the process of going up and down the stairs There will be constant bumps and ups and downs, and the speed must be controlled very slowly to improve the safety of the passengers

Usually, the stair steps in our residential corridors are all 16cm in height, so it cannot be used as a tool for going up and down the residential stairs.

Therefore, none of them can become an ideal means of transportation for the disabled and the elderly, and thus limit their commercial space in the market

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