The structure of the pneumatic hoist mainly consists of a lifting mechanism, a running mechanism, and a braking device. 

The lifting mechanism includes pneumatic motors, planetary reducers, suspension assemblies, brakes, lifting chains, hook assemblies, and main control valves, which are used to achieve the lifting, lowering, and positioning braking of heavy objects. 

The operating mechanism consists of four parts, including a motor, brake, reducer, and wheel, used to drive the rotation of the wheel, thereby driving the lifting and landing of the hoist. 

The braking device includes electric motor brake and hydraulic mechanism actuator, which are used to brake the hoist during lifting and lowering processes.

 In addition, the pneumatic hoist is also equipped with driving devices, driving devices, and lifting mechanisms to achieve various operations of the hoist.