高速动车组塞拉门辅助锁优化研究

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中图分类号：U270.38 文献标志码：B doi：10.20213/j.cnki.tdcl.2025.02.005

Abstract：With the increasing speed of high-speed EMUs，the aerodynamic load borne by the sliding door system has increased further. As a crucial component for the secure locking and sealing of the door system，it is imperative to optimize and enhance the auxiliary lock in order to enhance its ultimate bearing capacity and guarantee the safety and reliability of the sliding door system.The composition，locking seal，and auxiliary lock structure of the sliding door of high-speed EMU are described in this paper.Based on the principle of the auxiliarylock mechanism，the theoretical analysis model of auxiliary lock bearing capacity is established.After thorough analysis，calculation，and adjustment，the optimization scheme for the auxiliary lock is obtained. The optimized auxiliary lock is checked and calculated under ultimate load and compaction conditions. The simulation analysis of the lock tongue's strength and the door system’s load test are also completed，and the outcomes are qualified.Compared with the original auxiliary lock，the bearing capacity of the optimized auxiliary lock is increased by 30% ，meeting the ultimate negative pressure load requirement of 14kPa ，and the safety factor is 1.28. The optimized auxiliary lock is capable of guaranteing that the sliding door system meets the safe operation requirements of higher speed EMUs.

Key words： high-speed EMU; sliding door; auxiliary lock；negative pressure load; bearing capacity; rebound force

随着我国高速铁路的快速发展，高速动车组的技术水平不断提高，持续向着更加安全、快捷、舒适的方向优化改进。（剩余4745字）