The JQH30*24 Air Winch adopts compressed air as power to drive the TMH17 piston air motor, transferring torque to drum through the second Gear Reducer. By operating manual diversion valve on the motor, the winch can perform hoisting, lowering and stopping actions to the wire rope. The Double-braking Air Winch is especially fit for hauling, lifting and other work in mines, construction engineering sites, platforms of oilfields off-sea and inland, etc.