Impact device of rock drill and rock drill

• Main Authors: TIAN XIANG, XI WEIHANG, CAO XINGYU, ZHANG CHICHEN, LI JIAMING, WANG SONGYUAN
• Format: Patent
• Language: Chinese; English
• Published: 28.03.2023
• 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 impact device comprises a shell, a cylinder sleeve, a reversing valve and a piston, the piston and the reversing valve are coaxially arranged in the cylinder sleeve, the cylinder sleeve is installed in the shell, the shell is provided with an oil inlet main path and an oil return main path, and the oil return main path is communicated with the oil inlet main path. An oil inlet branch communicated with the oil inlet main path and an oil return branch communicated with the oil return main path are arranged on the cylinder sleeve, and an oil path is arranged on the reversing valve and communicated with the front end face and the rear end face of the reversing valve. The impact motion part is mounted in the cylinder sleeve and is not in direct contact with the main shell, so that the service life of the shell is greatly prolonged; the shell only supports the sheath, the oil duct is simple, the processing difficulty is reduced, the production efficiency is improved, and the service life of the shell is prolong