在 煤矿生产中 ,小型矿用绞车是必不可少的 ,而很多厂家生产的小型矿用绞车都不带行程限位装置。于是,很多绞车司机采用在钢丝绳上做标记,以指示矿车运行的位置,这种方法很不安全。因为井下比较黑暗 ,看不清标记 ,容易出现事故和误操作 ,且标记容易移动和丢失 ,导致指示位置不 In mine production, small mine winches are essential, and many manufacturers of small mine winches do not have travel limit devices. As a result, many winch drivers use a mark on the wire rope to indicate where the tub runs, which is unsafe. Because the darker the ground, can not see the mark, prone to accidents and misuse, and the mark is easy to move and lost, resulting in the indicated position is not