In order to solve the problem of transporting heavy and bulky goods on the stairs to run smoothly,as well as handling can be conveniently converted between the stairs and the flat ground,a low-cost convenient crawler crawler trolley is proposed,and three-dimensional modelling and simulation through the SolidWorks software,which can overcome the problem of the traditional trolley is difficult to walk smoothly on the stairs,and at the same time,it can be moved on the flat ground.The coordinated action of crawler,MCU control module,stepper motor and gear drive completes the stair-climbing action.This programme has applied for a utility model patent(ZL202221715118.9).
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