Mechanical principle of wheel set: the whole vehicle body acts on four wheel sets of the mobile climbing robot through shafts and bearings, and each gear in the wheel set rotates around the small shaft. When the power of the motor reaches the transmission shaft, the transmission shaft rotates with the central gear, which drives the transition gear to rotate, and then transmits it to the driving gear. Because the small wheel is fixedly connected with the driving gear, So the robot moves forward. When the wheel group mechanism of the mobile climbing robot is running on the horizontal road, since two wheels of each wheel group are on the ground, the rotating arm can not rotate, but can only move along the horizontal road with the vehicle, so as to realize the smooth driving of the mechanism on the flat and straight surface; when the driving wheels encounter obstacles on the way forward, the driving wheel system becomes a planetary wheel system, and the rotating arm carries three other wheels Rotate around the axis of the central gear to realize the purpose of climbing the stairs.<br>
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