Pneumatic single-arm elevator

A pneumatic single-arm elevator comprises a main body frame and further comprises an air cylinder top plate assembly, and the air cylinder top plate assembly conducts jacking through a lifting air cylinder. The air cylinder top plate assembly comprises side plates distributed oppositely, a first top plate connected with the side plates, a second top plate perpendicularly connected with the first top plate and a limiting plate arranged on the top of the second top plate. The direction-changing synchronous belt wheel is arranged in the middle of the side plate, one end of the lifting synchronous belt is fixed to the bottom of the main body frame, and the other end of the lifting synchronous belt is connected with a cargo carrying table assembly after bypassing the direction-changing synchronous belt wheel. According to the principle of a movable pulley, the jacking stroke of the lifting air cylinder is only half of the stroke of the cargo carrying table assembly actually, material cost is saved, and space occup