轨道在矿山运输中使用非常普遍,铺道、调道的维修量很大,过去使用的道扒子,制造、携带和使用十分不便。改进后,制造简单,解体后便于携带,适合井下使用,根据制弯或调直需要,可随时调整两勾子距 The use of orbits is very common in the transportation of mines. There is a great amount of maintenance for paving and regulating roads. In the past, it was very inconvenient to manufacture, carry and use the roads. Improvements, manufacturing simple, easy to carry after disintegration, suitable for downhole use, according to the needs of bending or straightening, can be adjusted at any time two hook distance