Electric stair climbing wheel chair

Abstract

The invention relates to an electric stair climbing wheel chair which comprises a chair, armrests, front wheels, rear wheels and a composite chassis assembly, wherein a traveling output shaft of a power box is connected with the front wheels, and an obstacle crossing stair climbing output shaft is connected with a rear shaft gearbox; the rear shaft gearbox drives belt wheels of an obstacle crossing crawler belt, and a turning frame of the rear wheels is installed on a rear wheel shaft by a shaft sleeve; an accessory crawler belt frame is articulated with a crawler belt frame, and the accessory crawler belt frame is movably connected with the power box by a front connecting rod; the accessory crawler belt frame is connected with the turning frame of the rear wheels by a chain wheel; one end of an electric push rod is connected to a frame, and the other end drives the rear wheels to turn by a posture change mechanism; a carrying frame, the frame and one end of a rear connecting rod are coaxially fixed on a support shaft, luniform positioning blocks at both ends of the support shaft are matched with luniform buckled rings at the end parts of the crawler belt frames, and the other end of the rear connecting rod is articulated with the crawler belt frames. The invention has functions of traveling on the flat ground, crossing an obstacle and a ditch, climbing stairs up and down, and the like and has the advantages of compact structure, high automation degree, stable working, safe use and small size.

Description

technical field [0001] The invention relates to an electric wheelchair for climbing stairs. Background technique [0002] At present, known wheelchairs and electric wheelchairs can only run on flat roads with a gradient of less than 12 degrees, but they cannot cross stairs, grooves, and hurdles. [0003] But crossing the stair steps is the biggest obstacle for these mobility-impaired people. In 2004, in order to solve the problem of going up and down stairs in these houses, the country considered installing elevators for these houses, but due to various reasons, the plan was shelved. In order to solve the problem of wheelchair users crossing the stairs abroad, the emergency evacuation transport equipment of the building - the stair climber, is about to temporarily fix the wheelchair on the stair climber to go up and down the stairs. After use, it will be sent back to the original place again, and the use procedure is loaded down with trivial details. Although it can solve...

AI Technical Summary

Problems solved by technology

In 2004, in order to solve the problem of going up and down stairs in these houses, the state considered installing elevators for these houses, but due to various reasons, the plan was shelved

Its disadvantage is that the structure is complex, the process of climbing stairs is discontinuous, and the speed of climbing stairs is slow, so it has not been promoted

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