Anti-clamping bit hydraulic control system for rock drill

The utility model provides an anti-clamping bit hydraulic control system for a rock drill. The anti-clamping bit hydraulic control system comprises an LS (laser system) controlled variable pump, a rock drilling impact valve block, a pushing control valve group, a pushing pressure regulation valve bl...

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Bibliographische Detailangaben
Hauptverfasser:	QIAN MING, WANG JIANWEN, WANG HONGLIE, GAN LIHENG, LI PINGKUI, WANG YANZHEN, ZHANG WENJUN, YANG ZHIQIANG, SUN DUNZHEN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BLASTING DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS FLUID-PRESSURE ACTUATORS FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS HEATING HYDRAULICS OR PNEUMATICS IN GENERAL LIGHTING MECHANICAL ENGINEERING MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	The utility model provides an anti-clamping bit hydraulic control system for a rock drill. The anti-clamping bit hydraulic control system comprises an LS (laser system) controlled variable pump, a rock drilling impact valve block, a pushing control valve group, a pushing pressure regulation valve block, an anti-clamping bit valve block and a pilot shank control valve group. When rotating pressure of the rock drill is increased, the anti-clamping bit hydraulic control system has functions of automatically reducing rock drill pushing oil cylinder pressure, stopping pushing, automatically enabling the rock drill to move back and automatically stopping impact during return of the rock drill. Compared with the prior art, the anti-clamping bit hydraulic control system has the most complete control function; furthermore, the control system completely adopts the LS control function of the variable pump and has the characteristics of high automatic control performance high hydraulic element generality, energy conserva