船闸人字闸门底枢摩擦副接触应力分析
周紫嫣
（三峡大学 机械与动力学院，湖北 宜昌 443000）
摘要：底枢是人字闸门的重要的支承运转部件，其磨损将造成人字闸门失效，影响船闸功能。对闸门底枢摩擦副进行受力分析，对其受闸门自重和外载荷时的接触应力计算公式进行推导，再利用ANSYS软件对闸门底枢蘑菇头受自重和外荷载时的接触应力分布进行有限元分析，将将理论计算结果和有限元结果进行比较，二者误差较小，证明了理论公式的合理性。该公式结果表明：最大接触应力出现在外载荷的垂直接触点；最大接触应力与各点的接触应力随着外载荷的增大而增大，且呈正比关系；接触应力分布关于外载荷倾角有对称分布部分，最大接触应力随着外载荷倾角的增大而增大；闸门底枢半径增大，接触应力减少。
关键词：人字闸门底枢；接触应力；理论公式
中图分类号：TH16；TH133.31 文献标志码：A doi：10.3969/j.issn.1006-0316.2020.02.013
文章编号：1006－0316 (2020) 02－0075－06
Contact Stress Analysis of Friction Pair at the Bottom Hinges of Miter Gate
ZHOU Ziyan
( College of Mechanical & Power Engineering, Three Gorges University, Yichang 443002, China )
Abstract：The bottom hinges is an important supporting and running part of minter gate, and its wear will cause the failure of minter gate and affect the ship lock function. In this paper, the force analysis of the bottom friction pair of the gate is carried out, and the calculation formula of the contact stress under the self-weight and external load of the gate is deduced. Then the finite element analysis on the contact stress distribution of the mushroom head under its self-weight and external load is carried out with ANSYS software. It turns out that the errors of the theoretical calculation results and the finite element results are small, which proves the rationality of the theoretical formula. The results of this formula indicate that the maximum contact stress occurs at the vertical contact point of the external load. The maximum contact stress and the contact stress at each point increase with the increase of the external load, and are in a proportional relationship; the contact stress distribution is symmetric with respect to the inclination angle of the external load, and the maximum contact stress increases as the inclination angle of the external load increases; the radius of the bottom hinges of the gate increases as the contact stress decreases.
Key words：bottom hinges of miter gate；contact stress；theoretical formula
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收稿日期：2019－07－26
作者简介：周紫嫣（1994－），女，湖北宜昌人，硕士研究生，主要研究方向为摩擦学。
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