我矿主井多绳提升机原使用两台TDSY－12／110×4型异侧底卸式箕斗提升原煤。近年来，随着生产的发展，原煤产量逐年增加，箕斗扇形闸门维修量大增，事故频繁，影响生产问题日渐突出。1993年元月，我矿将两台箕斗更换为外动力开启的垂直闸门箕斗，并配套选用了电液推杆做为闸门? My main mine multi-rope hoist originally used two TDSY-12/110 × 4 different-side bottom dump skip to upgrade the raw coal. In recent years, with the development of production, the output of raw coal has increased year by year, the maintenance volume of the fan-shaped gate has been greatly increased, accidents have been frequent, and the problems affecting the production have become increasingly prominent. In January 1993, the mine replaced two skips with a vertical gate skid, which was powered by an external power source, and matched the electro-hydraulic putter as a gate.