This design is aimed at the difficulty of carrying barreled drinking water. The climbing car takes deformation wheel as the main form and planet wheel as the auxiliary form to climb up. When the deformation wheel turns forward, the inner wheel hub retracted under the control of the motor to realize stair climbing. In reverse rotation, the inner hub stretches, and the two hubs merge into the whole wheel to achieve flat driving. Its grasping mechanism is divided into three parts, which can control the lifting, movement and opening and closing of claws to meet the automatic loading and unloading of bottled drinking water.
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