Working device of rock drilling equipment

• Main Authors: CUI ZIYANG, ZHI MEIHUA, WANG JING, SUN QIANGQIANG, WANG YANGYANG, ZHENG KE, HUANG YAZHOU, TIAN DONGLING, HU HAITAO, LIU YIDING, MA BINBIN, LIU TAO
• Format: Patent
• Language: Chinese; English
• Published: 12.11.2019
• 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 invention discloses a working device of rock drilling equipment. The working device comprises a cylinder body, an impact piston, an impact rod, a reversing valve, a main working pipeline and a control mechanism, wherein the impact piston is arranged in the cylinder body, and an upper hydraulic cavity and a lower hydraulic cavity are defined by the impact piston and the cylinder body; and whenthe first pressure difference of hydraulic oil in the upper hydraulic cavity and hydraulic oil in the lower hydraulic cavity to the impact piston exceeds the first rated pressure difference, the control mechanism is used for limiting the first pressure difference. The actual first pressure difference exceeding the first rated pressure difference is limited through the control mechanism, so that the impact piston is unlikely to generate overlarge impact force under the effect of the first pressure difference, the impact piston is effectively protected, and the service life of the impact pistonand related parts is prolo