Research on key technology of narrow-type double-turn track crawler drilling rig.

In view of the difficult construction problem of narrow roadway drilling rig, the design plan and technical requirements of the drilling rig were formulated, and the narrow-body doubleturn track crawler was developed. The key technologies of the luffing device, the crawler body and the integrated operating valve were introduced. Research and verification of the reliability of the rig through field tests. The rig moves quickly and easily; The cylindrical column-double hydraulic drive turntable luffing device has compact structure; no rubber chuck have simple structure and convenient use which can save maintenance and cost; integrated operating valve have small size and less rubber tube Pipeline, which can be easy to repair; the open large stroke holder have the small width and large opening, which make it high reliability and good neutrality. Development of narrow double turntable crawn rigs, shorten the auxiliary operation time of the rig in a narrow roadway, improves the safety of on-site workers, providing technical support for improving the construction efficiency of narrow road rigs. [ABSTRACT FROM AUTHOR]