Driving device with power-assisted travelling and stairs climbing functions

Abstract

The invention discloses a driving device with power-assisted travelling and stairs climbing functions. A travelling mechanism and a climbing frame are combined together to form a novel planet gear transmission principle; in travelling on a flat road, a driving portion drives a sun gear to positively rotate, two travelling wheels contact a ground at the same time, the sun gear drives a planet gearto reversely auto-rotate around a planet shaft, inner teeth and outer teeth of a tooth ring and the planet gear rotate reversely in sync, and a transmission gear drives the travelling wheels to positively rotate, thus achieving travelling rotation; in stairs climbing, the sun gear positively rotates, the travelling wheels counter stairs and are blocked, the transmission gear and the inner and outer teeth of the tooth ring stop rotating, the sun gear drives the planet gear to revolve positively along the inner teeth, and the planet shaft drives the climbing frame to positively rotate, thus achieving obstacle surmounting and climbing. The technical problem is solved that an existing star gear structure hardly climbs stairs since the climbing frame is powered to reversely operate when the travelling wheels are unable to operate; the driving device has the advantages of simple structure and good safety and reliability of use.

Description

technical field [0001] The invention relates to the technical field of stair-climbing equipment, in particular to an electric-assisted walking and stair-climbing driving device. Background technique [0002] Climbing stairs or carrying heavy objects for wheelchairs without elevators is a very difficult thing, and it needs to consume more manpower to complete. Therefore, automatic load-carrying stair climbing machines or stair climbing wheelchairs that adopt electric power have emerged as the times require. The walking part of the stair climbing machine or stair climbing wheelchair is basically the same, and can be divided into three types according to its transmission mode: crawler type, stepping support type and star wheel type. [0003] Among them, the climbing device of the crawler mechanism is a continuous walking method, but when the crawler leaves the previous step or advances to the next step, it will tilt forward and backward due to the deviation of the center of gra...

AI Technical Summary

Problems solved by technology

[0008] In order to solve the above-mentioned technical problems, the object of the present invention is to provide a driving device for walking and stair climbing with electric power assistance, which adopts the transmission working principle of the planetary gear structure, can effectively realize the functional needs of walking on flat roads and climbing stairs, and solves the current problems. With a star wheel structure, when the walking wheels cannot operate, the power of the crawler frame will run in reverse, making it difficult to complete the function of climbing stairs. It has the characteristics of simple structure, lightness, reliability and strong practicability.

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