Wheel-track compound wheelchair

Abstract

The invention discloses a wheel-track compound wheelchair including a wheelchair body; the wheelchair body is provided with two main wheels and a main wheel driving device for driving the rotation ofthe two main wheels, the wheel axles of the two main wheels are respectively rotatingly connected with the middle parts of the left side and the right side of the wheelchair body. The wheel-track compound wheelchair also includes a first driving device, track devices and two auxiliary wheels; the first driving device is arranged at the lower end of the wheelchair body, and the first driving deviceis provided with two driving ends in bilateral symmetrical distribution; the wheel axles of the two auxiliary wheels are rotatingly connected with the two driving ends of the first driving device; the first driving device is used for driving the two auxiliary wheels to move up and down synchronously. The track devices are horizontally arranged at the lower end of the wheelchair body in the frontand back direction through a second driving device, and the second driving device is used for driving the front ends of the two track devices to move up and down; the track devices are provided with track driving mechanisms for driving tracks to move. The wheel-track compound wheelchair can realize the functions of flat ground moving, groove crossing and stair up-and-down going.

Description

technical field [0001] The invention relates to the technical field of wheelchairs, in particular to a wheel-track composite wheelchair. Background technique [0002] There are many types of ordinary wheelchairs on the market, but they all can only walk in a barrier-free room or on flat ground, and they are powerless when facing obstacles or stairs. [0003] In order to realize that wheelchairs go up and down stairs, several classes of stair climbing wheelchairs have occurred, mainly comprising planetary wheel type, crawler type, alternate support type and wheel-track compound type wheelchairs. Among them, the structure of the planetary-wheel stair-climbing wheelchair is relatively simple, but the center of gravity fluctuates greatly when climbing the ladder, and the comfort is poor; the track-type stair-climbing wheelchair has a stable movement and relatively low vibration because the trajectory of the center of gravity is close to a straight line parallel to the slope of t...

AI Technical Summary

Problems solved by technology

Among them, the structure of the planetary-wheel stair-climbing wheelchair is relatively simple, but the center of gravity fluctuates greatly when climbing the ladder, and the comfort is poor; the track-type stair-climbing wheelchair has a stable movement and relatively low vibration because the trajectory of the center of gravity is close to a straight line parallel to the slope of the steps. Small, but more resistance and more difficult to turn when driving on flat ground

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