盾构换刀机器人储存舱闸门密封特性研究  

Research on sealing characteristic of storage tank gate of cutter changing robot for shield machine

作　　者：杨妹 王玉 任勇 张帅坤 林赉贶[2] 夏毅敏[2] YANG Mei;WANG Yu;REN Yong;ZHANG Shuaikun;LIN Laikuang;XIA Yimin(College of Civil Engineering,Central South University,Changsha 410075,China;College of Mechanical and Electrical Engineering,Central South University,Changsha 410083,China;China Railway Construction Heavy Industry Co.,Ltd.,Changsha 410100,China)

机构地区：[1]中南大学土木工程学院,湖南长沙410075 [2]中南大学机电工程学院,湖南长沙410083 [3]中国铁建重工集团股份有限公司,湖南长沙410100

出　　处：《长沙理工大学学报（自然科学版）》2022年第4期9-18,共10页Journal of Changsha University of Science and Technology:Natural Science

基　　金：国家重点研发计划项目(2018YFB1306700)。

摘　　要：【目的】为保证高压环境下盾构换刀机器人在储存舱内安全密封保存,开展盾构换刀机器人储存舱闸门的密封特性研究。【方法】通过揭示某型号储存舱闸门的结构特点和密封机理,建立闸门密封件在介质压力作用下的仿真分析模型,分析介质压力作用下应力分布以及各接触面最大接触应力值,探究初始压缩量、流体介质压力及材料硬度对闸门密封件密封性能的影响。【结果】在0~2.0 MPa的介质压力范围内,初始压缩量及材料硬度对密封件密封性能的影响较大。以密封件最大接触应力、最小Von-Mises应力为优化目标,采用响应曲面法对密封件进行参数优化设计,得到邵氏A型硬度80、初始压缩量1.0 mm的密封件可以满足0~2.0 MPa介质压力下的密封要求。【结论】通过密封性能测试试验,验证了闸门在低压(0.6 MPa)和高压(1.2 MPa)工况下良好的密封性能。可为泥水盾构换刀机器人储存舱闸门的密封件选型提供指导。[Purpose]In order to ensure the safe storage of the cutter changing robot in the storage cabin under high-pressure environment,the sealing characteristics of the gate in the storage cabin were studied.[Methods]By revealing the structural characteristics and sealing mechanism of a certain type of storage cabin gate,a simulation analysis model of gate seals under the action of medium pressure was established.The stress distribution under the action of medium pressure and the maximum contact stress value of each contact surface were analyzed,and the influence of initial compression,fluid medium pressure,and material hardness on the sealing performance of gate seals were explored.[Findings]The results showed that the initial compression and material hardness had a great influence on the sealing performance of the seal in the medium pressure range of 0-2.0 MPa.Taking the maximum contact stress and the minimum Von-Mises stress of the seal as the optimization objective,the response surface method was used to optimize the parameters of the seal.It was obtained that the seal with Shore hardness of 80HA and initial compression of 1.0 mm could meet the sealing requirements under the fluid pressure of 0-2.0 MPa.[Conclusions]Through the sealing performance test,it is verified that the gate has good sealing performance under low pressure(0.6 MPa)and high pressure(1.2 MPa).The research results can provide guidance for the selection of seals for the storage cabin gate of slurry shield machine cutter changing robot.

关 键 词：盾构 换刀机器人 储存舱闸门 密封特性 响应曲面法 优化设计 

分 类 号：TU111[建筑科学—建筑理论]