三峡升船机卧倒门油缸支铰优化

Optimization of cylinder hinge of horizontal type gate for Three Gorges ship lift

针对三峡升船机试运行期间闸首卧倒门油缸支铰连接螺栓断裂的问题,在满足闸首工作门结构力学性能的前提下,对不同工况下的螺栓进行强度分析,利用Solidworks Simulation有限元软件,建立螺栓和连接板的本构模型,对螺栓和连接板应力场进行数值模拟,得出螺栓断裂的原因,并提出油缸支铰的优化方案。结果表明,原螺栓强度预紧力小于螺栓最大工作荷载而导致螺栓断裂,更换的10.9级高强度螺栓可以满足实际工况需求,增加的两个筋板保证了油缸支铰螺栓连接板的强度,可供类似工程提供参考。

In view of the problem that the joint bolt of the gate of the Three Gorge ship lift is broken during the trial operation,we carry out the strength analysis of the bolt under different working conditions under the premise of satisfying the mechanical properties of the gate work gates,apply finite element software of Solidworks Simulation to establish the constitutive model of the bolt and joint plate,simulate the stress field of the bolt and joint plate,obtain the reason of the broken bolt,and propose the optimization scheme of the cylinder hinge.The results show that the original bolt strength preload is less than the maximum working load to cause the broken bolt.The replacement 10.9 grade high-strength bolt can satisfy the actual working conditions,the addition of two ribs ensure the strength of the cylinder hinge bolt connection plate,which can provide the references for the similar projects.