| 摘要 |
The invention relates to a hydraulic vibration generator for hydraulic rotary percussive drills, used as percussion mechanism in hydraulic percussive and rotary percussive equipments used in mining, geological exploration and industrial constructions. According to the invention, the generator requires a differential linear bilateral hydraulic motor, consisting of a body (1) and a piston (2) with a unilateral rod (v) and the control of the movement of the piston (2) through a distribution slide valve (3), and the structure of the electro-hydraulic system for controlling the hydraulic drill is carried out, as compact as possible, by mounting the rotary distribution slide valve (3) inside the piston (2), by engaging a rod (r) of the distribution slide valve (3) and, due to the orifices made into the generator, inter-connections being successively made with the pressure source and with the tank, the pressure inside a chamber (b) of the hydraulic motor being controlled this way. |
