全液压电液锤专利申请号：９３１２０９９３公开号：１０９３６２７文摘：电液锤包括一个具有内部通道的锤头驱动缸、一个液控单向阀和由同一个操纵缸驱动的排液阀、进液阀及打击阀。其中排液阀接在驱动缸上腔和油箱之间；进液阀接在蓄能器、油泵与驱动缸上腔之间；打击阀接在? Full hydraulic electro-hydraulic hammer Patent application number: 93120993 Publication number: 1093627 Abstracts: Electro-hydraulic hammer includes a hammer drive cylinder with internal passage, a pilot-operated check valve and a drain valve driven by the same pilot cylinder, Valve and blow valve. The drain valve is connected between the upper chamber of the driving cylinder and the fuel tank; the inlet valve is connected between the accumulator, the upper chamber of the oil pump and the driving cylinder;