Hydraulic control system for impact hammer of rock drill

The utility model discloses a hydraulic control system for an impact hammer of a rock drill, which is characterized in that an oil inlet P is arranged at the front end of a main oil path, and an oil outlet A is connected to the rear end of the main oil path; a throttle valve, a three-position two-way electromagnetic valve, a hydraulic control sequence valve, a first throttle valve, a second throttle valve, a first logic shuttle valve, a third throttle valve, a second logic shuttle valve, an electromagnetic proportional overflow valve and a fourth throttle valve are connected to the main oil way, and the main oil way is connected with a hydraulic oil tank connector T through the throttle valve, the hydraulic control sequence valve and the three-position two-way electromagnetic valve. According to the hydraulic control system of the impact hammer of the rock drill, an electric control principle valve group is adopted, the structure is simple and reasonable, joints are reduced, fault points are further reduced,