Reciprocating device

According to the reciprocating motion device, the interior of a rotating rigid body is hollow, an auxiliary shaft gear is fixedly installed at the rear end of an auxiliary shaft, and the auxiliary shaft gear can drive the auxiliary shaft to rotate around an auxiliary axis and rotate around a main axis along with the rotating rigid body, so that the auxiliary shaft gear rotates and revolves; an inner gear ring fixedly installed on an outer base of the rotating rigid body is in meshing transmission with an auxiliary shaft gear to form a set of auxiliary inner meshing gear transmission, and an auxiliary shaft can transmit movement of the auxiliary shaft gear to a parallelogram mechanism in front to drive a pushing handle to move. The base gear is meshed with an outer ring gear of the rotary rigid gear to form a set of external meshing gear transmission; and an inner ring gear of the rotary rigid gear is in meshing transmission with the hollow shaft gear to form a set of main internal meshing gear transmission. A