The structure can convert the rotation of a drive belt pulley into the plane curve movement of the pivot bolt, realize motor driving of the stapler and ensure the stapling strength and quality.

This paper introduces driving rock drift with minor diameter bit, minor diameter cartridage and minor diameter bolt, it can realize smooth blasting, roadway speed is raised, driving cost is reduced.

Germany skilled, advanced manufacturing processes and technologies, focus on the large nut fastening bolt, disassembly of hydraulic technology and practical application of driving force.