Abstract
In order to solve the coal mine gas extraction from whole section fan-shaped hole fast construction technical problems, through to walk type crawler drilling rig structure and the design of the hydraulic system, developed a whole section of roadway fan in mine gas extraction hole drill, the Angle of institution by hydraulic motor driven rotary gear reducer to feed within a cross section of 360 ° fuselage quickly adjustable Angle, reduce the assistant time of drilling construction, the hydraulic system controlled by single action, the operation is simple and reliable. Field tests show that the drill has strong structural stability, easy to move, and is a monolithic crawler drill that can be applied to the construction of gas extraction borehole with large inclination Angle and full section.
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