YSD 系列液壓千斤頂 Hydraulic Jack （YSD series）

YSD型系列液壓千斤頂主要應用于各種先張法臺座張拉預應力筋和各種混凝土箱涵的頂舉，頂推施工，還可以用于更換橡膠支座以及大型構件的同步頂舉施工。該型千斤頂活塞或油缸上帶有自鎖螺母，安全性比液壓自鎖千斤頂更好。
YSD series hydraulic jack is mainly used in various pre-tensioning PC tendons stressing on the pedestal and concrete box culverts jacking and incremental launching constructions,and also can be in the synchronous jacking constructions of the rubber bearing replacement and large components.It has an internal locking device which allows the Hydraulic Jack to be locked at a specific position and frees up the need for hydraulic pump.