The test method of pressure loss, flow loss and frictional force loss etc. of the hydraulic pumping units is presented, from which the mechanical efficiency and volumetric efficiency are obtained.
给出了测取液压抽油机系统压力损失、流量损失以及油缸的摩擦力损失等的方法，并由此求出系统的机械效率与容积效率。
This paper introduces the improving process of outside pour type hydraulic prop. It can reduce Labour strength, raise pressure text safety and work efficiency.
介绍了外注式单体液压支柱试压头的改造过程，对其进行改进可以降低劳动强度，提高试压安全性能和劳动效率。
The leakage of piston pairs has great influence on hydraulic pressure systems service behavior and operating efficiency.
活塞副的泄漏对液压系统的工作性能和工作效率有很大影响；
In the effect of heavy pressure, the existence of the clearance volume will reduce the efficiency of the hydraulic end.
在高压力作用下，余隙容积的存在会降低液力端的容积效率。
It has high-efficiency gas punch, hydraulic-pressure swing guillotine shear, panel radiator sewing and soldering machine, coating machines, etc.
已配备高性能气动冲床、液压摆式剪板机、板式散热器缝焊机、涂装设备生产线等。
With Eaton Aeroquip brand with the use of hydraulic hose, easy withhold fast, high reliability, high pressure levels can reduce downtime and maintenance costs, while enhancing production efficiency.
与伊顿aeroquip品牌液压胶管配合使用，扣压方便快捷，可靠性强，压力等级高，可减少宕机时间及维护成本，同时可提高生产效率。
The hydraulic system has high efficiency, saving in energy and pressure-maintaining and overload protection functions.
本发明的折弯机液压系统具有高效、节能的特点，还具有保压、过载保护的功能。
The hydraulic system has high efficiency, saving in energy and pressure-maintaining and overload protection functions.
本发明的折弯机液压系统具有高效、节能的特点，还具有保压、过载保护的功能。
应用推荐