JT800/630型单简绞车已普遍使用于井下作为辅助提升用,由于该绞车所配用的为三相隔爆鼠笼型异步电动机,不能调速,所以启动时是突然加速,因而在启动阶段常常发生车辆掉道事故,特别是在甩道提升时,更容易掉道。钢丝绳和连接装置也常因受冲 JT800 / 630 simple winch has been generally used in underground as an auxiliary to enhance the use of winch equipped with a three-phase flameproof squirrel-cage asynchronous motor, can not speed, so the start is a sudden acceleration, and therefore often in the start-up phase Occur in a vehicle off the road, especially in the lift upgrade, more likely to drop off the road. Wire ropes and connecting devices are also often impacted