机械液压联锁同步升降装置解析计算及有限元分析

针对船闸人字门检修时传统的顶落门施工工艺复杂情况，设计了机械液压连锁同步升降装置，分析了装置的结构原理及受力工况。采用解析计算和有限元分析相结合的方法对装置中主要受力件螺纹活塞杆和安全齿形螺母进行理论强度校核，并基于Ansys软件分析装置在载荷物以重力下坠极限工况下的情况。结果表明：装置的理论强度满足要求，有限元分析的局部区域存在最大等效应力接近材料屈服极限情况。结合分析结果和装置的结构特点提出了改造建议，进一步优化了装置的设计。

Analytical calculation and finite element analysis of synchronous lifting device of mechanical hydraulic interlocking

In view of the complex construction technology for maintenance of ship lock gate,the synchronous lifting device of mechanical hydraulic interlock was designed,whose structure principle and force status of the device were analyzed.The theoretical strength of the main load-bearing parts of the device,the screw piston rod and the safety tooth nut,were checked by the method of analytical calculation and finite element analysis,and the device was analyzed under the limit condition of the load falling by gravity based on the Ansys software.The results showed that theoretical strength of the device could meet the requirements,and the maximum equivalent stress in local area of the finite element analysis was close to the material yield limit.Combined with the analysis results and the structural characteristics of the device,the improvement suggestions were put forward to further optimize the design of the device.