The working principle of all hydraulic electric-liquid hammer is introduced. The innovation technology is described, offered hy China National Heavy Machinery Research Institute Co. , Ltd. lo First Tractor Co. , Ltd. , and needed for changing the large tonnage steam (air) drop hammer into an all hydraulic electric-liquid hammer whose hydrolic system adopts a heavy-calibre special service valve set, hammer rod and hammer head adopt the spherical hinge linkage, hammer return stroke is designed as a double-limit buffer unit to avoid the shatter crack of the pipeline, and partial pipeline uses hose. The modified equipment works well, and has low failure rate and high reliability. Its energy saving rate is 90%.%介绍了全液压电液锤的工作原理,以及中国重型机械研究院有限公司为第一拖拉机股份有限公司将大吨位蒸(空)模锻锤改造成全液压电液锤项目中所采用的创新技术:液压系统采用专利技术的大口径专用阀组,锤杆与锤头采用球铰活动联接,锤头回程设计为双限位缓冲装置,为避免管道被震裂,部分管路采用软管联接等.改造后的设备使用情况良好,故障率低,可靠性高,节能率90％以上.
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