Adjust winch: Check safety brakes each transmission system is flexible and reliable hoist Inner Mongolia, and adjust brake release gap between brake shoe and the brake wheel is not greater than 1.5mm. Check if the service brake and safety brake control electrical interlock with the main motor hoist Shaanxi, the main motor starts working brake is released to stop the main motor is working brake and safety brake Brake only to start the main motor. Winch mainly used for coal, suspension hanging plate, pumps, pipes, grouting pipe, duct and other tunneling equipment metal ore and non-metallic mineral Vertical Shaft excavation. It can substitute for ground building construction winches for lifting and handling the role. Winch line suspension device according to wellbore excavation work system design it only applies to short-term work system is not suitable for long-term use of the hoist operation.