The utility model relates to a hydraulic jack power system which can automatically adjust the internal pressure of an oil cylinder. The aim is to provide an oil cylinder power system that eliminates the negative pressure at work and ensures normal operation. The technical scheme is: hydraulic jack power system in cylinder pressure automatic adjustment, including the installation of the valve in the jack cylinder and oil pump and oil pump driven by core movement of the handle, the cylinder jacket is located in the central, oil chamber between the cylinder and the top coat coat; the air storage is also equipped with one can keep the atmospheric pressure. Can airbags, air storage bag is fixed on the outer end of the oil storage cavity and connected with the. The air energy storage air sac comprises a cylinder body whose bottom end is fixed on the top of the coat, and the top is communicated with the atmosphere, and a gas storage cover can slide along the inner wall of the cylinder body through a sealing ring. An oil filling hole is arranged at the center of the gas storage cover, and the oil filling hole is sealed by an oil filling hole screw. The top end of the inner wall of the straight cylinder is provided with a retaining ring which can prevent the gas storage cover from slipping upwards.
【技术实现步骤摘要】
可自动调整油缸内压的液压千斤顶动力系统
本专利技术涉及一种起重装置,具体是液压千斤顶的油缸动力系统。
技术介绍
液压千斤顶是现今大量普及的起重装置;其油缸动力系统的工作原理是:油泵启动后液压油不断地泵入油缸,将活塞杆3-1往前顶出缸体,从而推动抬升机构,进行重物的托举。然而,活塞杆往前运动时,进油腔21所需的液压油需要从储油腔2-1中及时抽取进行补充;回油腔20中由于活塞杆占据了较大空间,因而体积明显小于进油腔。因此活塞杆往前运动过程中,回油腔中通过钉帽回油通道20-1进入储油腔的液压油,要显著少于储油腔中通过阀体进油通道9-1进入进油腔的液压油;因而储油腔会产生负压,导致油泵吸油不畅,影响到千斤顶的正常使用。
技术实现思路
本专利技术的目的是克服上述
技术介绍
的不足,提供一种液压千斤顶动力系统的改进,该油缸动力系统应能消除工作时的负压现象,确保正常工作。本专利技术采用如下技术方案:可自动调整油缸内压的液压千斤顶动力系统,包括安装在千斤顶阀体上的油缸和油泵以及驱使油泵泵芯运动的揿手,所述油缸位于外套中央,油缸与外套之间为储油腔;其特征在于:所述外套的顶端还配置一一可保持大气压力的空气储能气囊,空气储能气囊的底端固定在外套上且与所述的储油腔连通。所述空气储能气囊包括底端固定在外套顶部且顶端与大气相通的筒体以及一通过密封圈可沿着筒体内壁上下滑动的储气盖。所述储气盖中央开制有注油孔,该注油孔由注油孔螺钉密封。所述筒体内壁的顶端安装着可防止储气盖往上滑脱的挡圈。本专利技术的有益效果是:所提供的千斤顶由于配置了空气储能气囊,因此能够自动调节储气腔内的压力,从而消除了负压现 ...
【技术保护点】
可自动调整油缸内压的液压千斤顶动力系统,包括安装在千斤顶阀体(9)上的油缸(3)和油泵(1)以及驱使油泵泵芯(1‑1)运动的揿手,所述油缸位于外套(2)中央,油缸与外套之间为储油腔(2‑1);其特征在于:所述外套的顶端还配置一可保持大气压力的空气储能气囊(5),空气储能气囊的底端固定在外套上且与所述的储油腔连通。
【技术特征摘要】
1.可自动调整油缸内压的液压千斤顶动力系统,包括安装在千斤顶阀体(9)上的油缸(3)和油泵(1)以及驱使油泵泵芯(1-1)运动的揿手,所述油缸位于外套(2)中央,油缸与外套之间为储油腔(2-1);其特征在于:所述外套的顶端还配置一可保持大气压力的空气储能气囊(5),空气储能气囊的底端固定在外套上且与所述的储油腔连通。2.根据权利要求1所述的可自动调整油缸内压的液压千斤顶动力系统,其特征在于:...
【专利技术属性】
技术研发人员:周浩良,龚正伟,
申请(专利权)人:杭州天恒机械有限公司,
类型:新型
国别省市:浙江,33
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