Hydraulic rock drill

• Main Authors: ZHOU HONGQI, WANG SHOULIN, TIAN JIANFENG, XU PENGFEI, WU PANXIAO, LI ZAIPENG, LI MINGDONG, YANG PENGFEI, LI SONG, ZHANG PENG, HUANG ZHAO, HU XIAOFEI, YANG DAQUAN, SHI JIANGTAO, FU PANSHENG
• Format: Patent
• Language: Chinese; English
• Published: 27.10.2023
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

The hydraulic rock drill comprises a shell, an impact piston, a bit shank and a rotating mechanism, one end of the bit shank is arranged in the shell, the impact piston is arranged in the shell, a plurality of shaft teeth are arranged at the rear end, close to the impact piston, of the bit shank, the shaft teeth are connected with the rotating mechanism, and an elastic washer surrounding the bit shank is arranged on the front sides of the shaft teeth; a water jacket is further arranged in the shell on the front side of the elastic washer, a buffering oil cavity is formed between the elastic washer and the water jacket, and the buffering oil cavity is connected with a springback buffering mechanism. According to the hydraulic rock drill, the buffering oil cavity is formed in the shell and connected with the springback buffering mechanism, the springback speed of the bit shank can be controlled through the springback buffering mechanism, the springback speed of the bit shank after empty hitting is reduced, then