The invention discloses a hydraulic jack. The hydraulic jack comprises an outer shell assembly, a supporting piece, a pressurizing assembly, a pressure relief assembly, a control assembly, an oil sac,an oil supply region, a telescopic assembly, an oil guide assembly and a base. According to the hydraulic jack, by arranging the oil sac with variable volume, the hydraulic jack can expand and contract along with increase and decrease of the oil quantity in the oil sac, and the interior of the oil sac can be kept in a vacuum state, so that the hydraulic jack is not affected by leaked-in air; meanwhile, the height-adjustable supporting piece is arranged, the height of the supporting piece can be adjusted in advance according to the height of a to-be-supported object, the problem that the lifting length of the hydraulic jack is large due to the different heights of the to-be-supported object is solved, and the time and labor are saved; and by arranging the base with variable angles, an angle between the stressed object and the jack fulcrum can be automatically adjusted, and the stressed object is kept perpendicularly stressed.
本发明公开了一种液压千斤顶,包括:外壳组件、支撑件、加压组件和卸压组件、控制总成、油囊、油补给区、伸缩组件、导油组件和底座,本发明实施例液压千斤顶通过设置容积可变的油囊,能随着油囊内油量增多减小而膨胀缩小,并能令其内部保持真空状态,使液压千斤顶不受泄入空气的影响;同时设置高度可调节的支撑件,可以根据待支撑物的高度预先调节支撑件的高度,解决了因为待支撑物的高度不同,导致液压千斤顶的升降篇幅较大的问题,省时省力;通过设置可以与角度可变的底座,可自动调节受力物体与千斤顶支点角度,使其保持垂直受力。
Hydraulic jack
液压千斤顶
2020-04-17
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 |