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试验舱在航空、航天、材料等领域具有广泛的应用,由于试验舱设备较大,需要采用大型液压锁紧机构来开关舱门。本文根据理论计算和实际工况的需求,设计了舱门的液压锁紧机构,结合使用情况,校核了锁紧件的接触强度;然后应用solidworks的有限元分析模块,采用逐步迭代的方法,优化了锁紧件的过渡圆弧R,锁紧接触厚度B,以及吊耳厚度B1的尺寸。通过上述优化设计,在保证锁紧件屈服安全系数和接触安全系数为1.4的情况下,与优化前相比,锁紧件的质量减少了38%。
The test chamber has a wide range of applications in the fields of aviation, aerospace and materials. Due to the large equipment in the test chamber, a large hydraulic locking mechanism is needed to switch the door. In this paper, according to the theoretical calculation and the actual working conditions, the hydraulic locking mechanism of the hatch is designed, and the contact strength of the locking member is checked according to the using condition. Then the solidworks finite element analysis module is adopted, Optimized the locking member of the transition arc R, locking contact thickness B, and the size of the lug thickness B1. Through the above optimization design, in ensuring the yield factor and contact safety factor of 1.4, the quality of the fastener is reduced by 38% compared with that before optimization.