湖南省煤矿机械厂与湖南大学协作,研制成功一种新型的JBT 800×600-31型矿用提升绞车。长期以来,中小型煤矿的提升绞车一直使用仿苏产品,结构陈旧落后,使用防爆电机则不能调速,使用绕线电机能调速却不防爆,成了煤矿生产中的老大难问题。新研制的提升绞车克服了上述弊病,配备了四种不同功率的防爆电机,采用内置式两级 Hunan Coal Mine Machinery Factory in collaboration with Hunan University, the successful development of a new type of JBT 800 × 600-31 mining winch. For a long time, the winch of the small and medium-sized coal mines has been using the imitation of su-products, outdated structure, the use of explosion-proof motor can not speed, the use of winding motor speed but not explosion-proof, has become a long-standing problem in the production of coal mines. The newly developed lifting winch to overcome the above shortcomings, equipped with four different power explosion-proof motor, built-in two