A Damaged Analysis of How Fluid Pressure of WE - 600A Universal Testing Machine Heavily Pinch Piston Rod and Its Relevant Inprovement

WE&600A液压 万能试验机液压夹紧活塞 杆破坏分析及改进

Kinematic analysis of the universal joint system in connecting rod type engine-driven rice transplanter

连杆式机动水稻插秧机 万向联轴系统的运动分析

Universal Formulas of Rod Stress Distributions and Deformation laws

变形规律与应力分布的 几个 普遍 性公式

The prevention deflection and wear tools rotary oil producing wellhead equipment rotary tubing centralizer and universal sucker rod centralizer were developed .

研制了旋转式采油井口、旋转式油管扶正器及 万向抽油 杆扶正器等防偏磨工具，有效地防止了油管的偏磨现象。

The feature of the progressive cavity pump mobile intermittent recovery technique is using a tractor as power unit adopting a double universal coupling transmitting the power to a drive head to make the rod string rotate and thereby drive the progressive cavity pump for pumping .

新开发的螺杆泵机动间歇采油技术及设备的主要特征是用拖拉机做动力源，用双 万向联轴器把动力传递给驱动头，由驱动头带动抽油 杆柱旋转，进而驱动螺杆泵旋转抽油。

The Application of Bailey Truss and Universal Rod in the Construction of Urban Overpass

贝雷桁架、 万能 杆 件在城市立交桥施工的应用