| 摘要 |
A down-the-hole impacter includes a rear adapter, an outer pipe sleeve, a front adapter and a drill bit, wherein the rear adapter is connected to one end of the outer pipe sleeve, the other end of the outer pipe sleeve is connected to the front adapter, the drill bit is installed inside the front adapter through a snap ring, an inner cylinder is installed in the outer pipe sleeve, a gas distribution rod is installed in the cavity body of the inner cylinder, a check valve is matched with a spring to install in the inner cavity at the end portion of the gas distribution rod, a piston is installed in the cavity body of the outer pipe sleeve and forms a sliding connection with the terminal of the piston, and the outer pipe sleeve is provided with a retainer ring for positioning a guide sleeve. With the above arrangement, the output power of the impacter can be increased and the leakage of the high-pressure gas can be effectively decreased, so that the structure is more compact and reasonable, thereby prolonging the service life of the impacter. 4 P13 12 /lI 10-9 (87 - 5 7 4 3 r i -17 26 :Y1 20 21 22 ~i23J2 2. Fig. 1 SA rD 281 32 3 0 E 29 Fig. 2-1 |
