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. Mine shaft sinking winch reducer cleanliness measurement: After winch empty load test 25 tons sinking winch prices, according to the provisions of JB / T7929 execution; filtration and drying weighing method sinking winch 25 tons of high-quality balance of error should not greater than 5mg. Measured from the edge of the roll: roll rope diameter from the edge of multiple inspection, measurement winch drum height above the edge of the outermost layer of the rope, the mean value and dividing by the rope diameter.