一、引言我国研制防爆液压绞车的历史很短。至今,真正批量生产φ1.2m以上防爆液压绞车的唯独湖南株洲煤矿专用机械厂一家,远远满足不了煤矿生产的需要。世界各工业发达国家液压绞车发展得很快,从单绳到多绳,从缠绕式到摩擦式,从小型到大型,型号规格已成系列。国外液压绞车的研制是根据用户的需要,故其适应性较强。由于液压 I. Introduction China’s development of explosion-proof hydraulic winch has a short history. So far, the only truly mass production of φ1.2m explosion-proof hydraulic winch alone Zhuzhou, Hunan Coal Mine Machinery Factory, far can not meet the needs of coal production. The hydraulic winches developed rapidly in various industrialized countries in the world, ranging from single ropes to multi-ropes, from winding to frictional and from small to large ones. Models and specifications have become a series. The development of foreign hydraulic winch is based on the needs of users, so its adaptability. Due to hydraulic pressure