拨道是线路维修、养护作业中一项经常性的工作。随着线路上混凝土轨枕的大量铺设,原来依靠多人用撬棍拨道已经不能胜任作业要求。因此,拨道器的研制工作成为工务系统普遍关心的问题,许多单位为此做了大量的工作。1979年3月,铁道部在锦阳召开的养路机械化会议上,展出了全路各种型式的拨道器。其中,成都铁路局綦江工务段研制的拨道器被认为是一种较优的新型拨道工具。该拨道器选择钢轨 Track is the line maintenance, maintenance operations in a regular job. With the laying of a large number of concrete sleepers on the line, the original rely on crowbar with more than people can not do the job requirements. Therefore, the development of the tracker has become a common concern of the public works system, and many units have done a great deal of work to this end. In March 1979, the Ministry of Railways held a road maintenance mechanization meeting held in Jinyang, displaying all types of road-dials on the road. Among them, the Chengdu Railway Bureau Hanjiang section of the tracker is considered to be a better new type of track tools. The tracker selects the rail