The invention relates to the technical field of coal mining equipment, in particular to a same-stroke double-service-life hydraulic jack which comprises an outer cylinder body, a middle cylinder body is embedded in the outer cylinder body, a movable column body is embedded in the middle cylinder body, the middle cylinder body is configured to reciprocate in the outer cylinder body, and the movable column body is configured to reciprocate in the middle cylinder body. Wherein one end, extending out of the outer cylinder body, of the middle cylinder body is provided with a first locking cap in a detachable mode, and the first locking cap is used for locking or unlocking the outer cylinder body and the middle cylinder body; a second locking cap is detachably arranged at the end, extending out of the middle cylinder body, of the movable column body and used for locking or unlocking the middle cylinder body and the movable column body. The middle cylinder body is embedded in the outer cylinder body, the movable column body is embedded in the middle cylinder body, the outer cylinder body and the middle cylinder body are locked or unlocked through the first locking cap, the middle cylinder body and the movable column body are locked or unlocked through the second locking cap, when one-time service life is over, the second-time service life can be started only by replacing the locking caps, and operation is convenient and safe; and the service life of the hydraulic jack is greatly prolonged.
本发明涉及煤矿设备技术领域,特别是指一种同行程双寿命液压千斤顶,包括外缸体,外缸体内嵌入中缸体,中缸体内嵌入活柱体,中缸体被配置在外缸体内往复运动,活柱体被配置为在所述中缸体内往复运动;其中,中缸体伸出外缸体的一端,以可拆卸的方式设置第一锁紧帽,用于将外缸体与中缸体锁紧或解开;活柱体伸出中缸体的一端,以可拆卸的方式设置第二锁紧帽,用于将中缸体与活柱体锁紧或解开。本发明外缸体内嵌入中缸体,中缸体内嵌入活柱体,通过第一锁紧帽将外缸体与中缸体锁紧或解开,第二锁紧帽将中缸体与活柱体锁紧或解开,一次寿命结束时,只需更换锁紧帽即可启用第二次寿命,操作方便,安全,大幅增加液压千斤顶的使用寿命。
Same-stroke double-life hydraulic jack
一种同行程双寿命液压千斤顶
2023-04-07
Patent
Electronic Resource
Chinese
IPC: | 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 / F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein |
Fixing structure for stroke sensor of hydraulic support jack
European Patent Office | 2024
|