Patent attributes
The present invention discloses a driving device capable of walking and stair-climbing by electric power which adopts a combination of a walking mechanism and a climbing carrier to create inventive planetary gear transmission principles. When walking on a flat ground, a driving part drives a sun gear to rotate in a positive direction, two walking wheels are in contact with the ground at the same time, the sun gear drives a planet gear to rotate in a negative direction around a planet shaft, and inner teeth and outer teeth of a gear ring rotate in the negative direction synchronously with the planet gear, thereby a transmission gear drives the walking wheel to rotate in the positive direction to realize rotation of walking. When climbing stairs, the sun gear rotates in the positive direction, the walking wheel is obstructed by stair, the transmission gear, the inner and outer teeth of the gear ring stop rotating, and the sun gear drives the planet gear to revolute along the inner teeth in the positive direction, thereby the planet shaft drives the climbing carrier to rotate in the positive direction to realize climbing cross obstacles. Thus, the present invention solves the problem of the known planetary wheel structure that the climbing carrier is driven to rotate in opposite direction when the walking wheel cannot rotate such and thus is difficult to realize the function of stair-climbing, and has advantages of simple structure and safe and reliable use.
