不同举升机构在合页闸上的设计与分析

耿晔晗, 李凯旋,王湛，闫永生，刘旭冉.不同举升机构在合页闸上的设计与分析.工程技术，2021（4）.

摘要：通过理论计算对合页闸的两种举升机构——增力式和直推式，在不同运行工况下，闸体在不同角度时的油缸受力进行了计算分析，并运用INVENTOR软件建立4m高6m宽的合页闸三维模型，导入ANSYS有限元分析软件，对两种不同举升形式的合页闸坝面及各零部件进行有限元分析，研究在不同水利工况条件下的受力分布情况。结果表明，直推式举升机构采用的油缸缸径小，行程长，但随着坝面高度的增加，直推式合页闸的油缸选取受到缸径、行程限制，制造难度及成本大幅度增加。而增力式合页闸的油缸，缸径较大，行程较短，稳定性好，且连杆结构设计使起推及驻坝时油缸推力明显降低，延长油缸使用寿命，也避免了直推式举升机构因坝面高度过高而油缸行程受限的问题。该研究为合页闸今后的应用推广提供了参考依据。

关键词：合页闸；直推式，增力式；举升机构；油缸缸径；有限元分析

Abstract: This paper introduces performance characteristics of two lifting mechanisms of Hydraulic Elevator Dam (HED), which are: direct action type and boosting type. Through theoretical calculation to calculate and analyze hydraulic cylinder force of two lifting mechanisms in different angles and different working conditions. And applying INVENTOR software to establish the 3D model of HED with the height of 4m and the width of 6m, then import the model into ANSYS software. The finite element method is applied to analysis the dam surface and other parts in different lifting mechanisms, and studied the stress distribution under the different working conditions. The results show that the cylinder diameter of the direct action type is small, and stroke is longer. But with the increase of dam height, the cylinder selection of direct action type is limited by diameter, cylinder stroke, manufacturing difficulty and the price. While, the cylinder diameter of boosting type is bigger, stroke is shorter, and have good stability. The connecting rod design of boosting type HED has obvious advantages to reduce the cylinder force when the angle of dam surface in 0° and 75°, prolonging service life of the cylinders, and also avoided the problem of hydraulic cylinder stroke limitation due to dam height higher. So this study is provided a reference for the application and promotion of HED in the future.

Key word: Hydraulic elevator dam; Direct action type; Boosting type; Lifting mechanism; Hydraulic cylinder diameter; Finite element analysis.