Product Name: ZQHST-40/2.2 ZQHST-40/2.2 pneumatic drill pneumatic drill rig Julong special pneumatic coal structure and working principle of the structure: ZQHST-40/2.2 by the body type of pneumatic drills, pneumatic motor, speed reducer and drill three-part cards component parts of the body: the body (9) has an annular handle easy to grip both sides of the intake valve (32) and the internal pressure of the hook shank (35) controls the overall opening and closing of the lower body has a transverse bore connected to the gas leg, grip handle the placement oiler (38) to lubricate the air motor. Pneumatic Engine parts: containing gas (6), the rotor (5), the front head (8), a cylinder cover (4), the slider (7) and bearing (60, 62), a positioning pin (61) defining with the correct orientation of each part of the body. Reducer and drill card section: contains the rotor (5) connected to the sun gear (10), the planetary gear (14), an internal gear (12) and carrier (18) consisting of primary planetary gear, planet carrier and drill cards (23) are connected together, the helical grooves on the card to drive the drill pipe rotation. How it works: dynamic pressure hook shank (35) push rod (33) and the inlet valve (32) by a compressed air inlet connector (29) through the intake valve seat (31) into the cylinder (6) to promote the slide (7 high speed rotation) and a rotor (5) via a gear (10), the planetary gear (14), the internal gear (12) and the carrier (18) composed of one planetary gear reducer, a carrier speed of rotation of the drill chuck drive , driven by spiral drill pipe and drill card drill deep hole drilled in the coal seams.