When using the single drum winch, the lowering speed must be controlled by the brake, and the winch must be lowered slowly instead of too fast or sudden braking. It is prohibited to use the toggle switch to prevent collision and misoperation. The steel wire rope shall be regularly smeared with butter and placed in a special groove to prevent rolling and damaging the strength of the steel wire rope.

The winch converts electrical energy into mechanical energy through motor 1, that is, the rotor of the motor rotates and outputs, and drives drum 6 to rotate after decelerating through V-belt 2, shaft 3, gear 4 and gear 5. The drum winds the steel wire rope 7 and passes the pulley blocks 8 and 9 to make the crane hook 10 lift or drop the load Q, convert the mechanical energy into mechanical work, and complete the vertical transportation and loading and unloading of the load.