-During the underground drilling construction of the coal mine tunnel drilling rig, the drilling rig can independently adjust the height of the column as the height of the tunnel changes, and always maintain the effective support of the column top cover to the tunnel roof, thereby making the drilling rig work stably and eliminating the possibility of tunnel roof collapse or bottom plate collapse. The safety hazard of collapse ensures the safety of workers and equipment. The column has reasonable design, simple structure and convenient maintenance. It can be adjusted independently according to the height change of the mine tunnel and has the function of mechanical automatic compensation stroke. During the drilling operation of the drilling rig, when the top plate collapses, the bottom plate collapses, or the vibration of the drilling rig causes a gap between the top cover and the top plate, the column can use the compression power of the disc spring to extend the inner cylinder accordingly, quickly and effectively supporting the top plate. This column contains three sets of cylinders and can be used for drilling tunnels in mines with large height changes. -Technical Parameters of Tunnel Drilling Rig for Coal Mine
Technical Parameters
Unit
Tunnel Drilling Rig for Coal Mine
Rated Torque
Rated Speed
System rated pressure
System rated flow
Propulsion stroke
< br/> Drilling angle
~
Drill pipe diameter
Wire rope diameter
Water supply pressure
.～
ZLJ-200 tunnel drilling rig for coal mines