Winch is a light-small lifting equipment which used to lift or pull heavy goods with a drum or chain, also known as hoist. It can be vertical, horizontal or inclined dragging. According to different power, it can be divided into three kind of type: electric winch, hydraulic winch, and manual winch. It can be used alone and can be used as components in lifting and hoisting, road building machinery. Mainly used in construction, water conservancy projects, forestry, mining, wharf and other material lifting or leveling.