Thrust cylinder control oil way for down-the-hole drill

• Main Authors: YU GAOTAO, HE LONGMING, ZHUO YI, LI FABIN, SHE TIANPEI, FAN XIANGSHENG, HU ZHIJUN, FAN XISHENG, WANG PENGCHENG
• Format: Patent
• Language: Chinese; English
• Published: 06.02.2013
• Subjects: BLASTING; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR; FLUID-PRESSURE ACTUATORS; FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS; HEATING; HYDRAULICS OR PNEUMATICS IN GENERAL; LIGHTING; MECHANICAL ENGINEERING; SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; WEAPONS

The utility model belongs to the field of mine and borehole operation machinery, and in particular relates to a thrust cylinder control oil way for a down-the-hole-drill. The thrust cylinder control oil way for the down-the-hole-drill comprises a thrust collar, wherein a first oil way and a second oil way for enabling oil liquid to pass in and out are respectively arranged outwards on the front oil end and the back oil end of the thrust collar in an extending manner. The control oil way also comprises an O-shaped magnetic exchange valve, a connecting port A and a connecting port B of the upper way of the O-shaped magnetic exchange valve are respectively connected with the tail ends of the first oil way and the second oil way, a connecting port P and a connecting port O of the lower way of the O-shaped magnetic exchange valve are respectively communicated to the oil inlet end of the oil way and other working oil ways, and a one-way balance valve playing the effect of oil inlet communicating and oil return back