The invention discloses a hydraulic support jack and a hydraulic support and relates to the technical field of mining machines. The main purpose is to reduce internal leakage caused by seal failure ofa seal ring, and to guarantee normal work of the hydraulic support jack. The hydraulic support jack comprises a piston and a piston rod. A blind hole is formed in the piston, and one end of the piston rod is connected into the blind hole. The hydraulic support jack and the hydraulic support provided by the invention are mainly used for reducing internal leakage caused by seal failure of the sealring.
本发明公开了一种液压支架千斤顶和液压支架,涉及矿用机械技术领域,主要目的是减少因密封圈密封失效而发生的内泄漏,以保证压支架千斤顶的正常工作。该液压支架千斤顶包括:活塞和活塞杆;所述活塞上设置有盲孔,所述活塞杆的一端连接于所述盲孔内。本发明主要用于减少因密封圈密封失效而发生的内泄漏。
Hydraulic support jack and hydraulic support
液压支架千斤顶和液压支架
17.07.2020
Patent
Elektronische Ressource
Chinesisch
IPC: | E21D SHAFTS , Schächte / B66F HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD , Hub-, Verhol- oder Schubvorrichtungen, soweit nicht anderweitig vorgesehen, z.B. Vorrichtungen mit unmittelbarer Krafteinwirkung auf die Last |
Piston rod locking mechanism, jack and hydraulic support
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