When starting the main motor, the main motor rotates and transmits the power to the high-speed shaft of the reducer through the low-speed coupling. After two-stage gear transmission and deceleration, it is transmitted to the main shaft device by the passive shaft of the reducer through the coupling. If the rotation direction of the motor is constantly changed, the drum can be wound or the steel wire rope can be loosened, and the lifting container can move up and down the wellbore periodically.

The drum is welded with low-carbon alloy steel plate. The deformation of the drum after bearing can spread rapidly, and the stress and deformation are not concentrated, which effectively improves the bearing capacity and fatigue strength of the drum. After the drum is welded, the internal stress is eliminated by aging vibration to prevent the drum from deformation; All brake discs are made of 16Mn plates, which are resistant to deformation and wear. It can be made into split type according to the needs of users. All split drums and brake discs are made in the factory and can be installed on the use site without any reprocessing on the site.