跨座式单轨换梁型道岔制造工艺
周航敬芮李景浩
Manufacturing Process of Straddle Monorail Beam-switching Turnout
ZHOU HangJING RuiLI Jinghao
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作者信息:中铁科工集团轨道交通装备有限公司， 430223， 武汉
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Affiliation:China Railway Science & Industry Rail Transit Equipment Co., Ltd., 430223, Wuhan, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2024.02.042
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中图分类号/CLCN:U213-6
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栏目/Col:应用技术
摘要:
［目的］由于跨座式单轨换梁型道岔部件种类多、内部结构复杂、变形风险大，在制造过程中容易出现零部件安装位置度超差、焊接热变形及应力集中等问题，导致产品达不到设计质量的要求。因此，有必要对跨座式单轨换梁型道岔的制造工艺进行系统性的研究。［方法］介绍了跨座式单轨换梁型道岔概况；分析了跨座式单轨换梁型道岔结构特征和材料属性，从制造工艺重难点、工艺路线规划、工艺设计及工装设计等多个方面进行了针对性的研究；提出一套适用于跨座式单轨换梁型道岔的制造工艺，并对所提制造工艺的实施效果进行了验证。［结果及结论］所采用的工装胎架与焊接工艺能够将道岔各部件的尺寸精度控制在设计要求范围内，配合振动时效处理能够有效改善结构应力的分布状态、降低结构焊后残余变形风险，确保道岔装配后的线型尺寸达标。
Abstracts:
［Objective］ Due to the diverse components, complex internal structures, and significant deformation risks of straddle monorail beam-switching turnout, issues such as improper component installation, welding-induced thermal deformation, and stress concentration may arise during the manufacturing process, leading the products failure in meeting the required design quality. Therefore, it is necessary to conduct a systematic study on the manufacturing process of the straddle monorail beam-switching turnout. ［Method］ The overview of straddle monorail beam-switching turnout is presented. The structural characteristics and material properties of the straddle monorail beam-switching turnout are analyzed. Targeted research is conducted on manufacturing challenges, process route planning, process design, fixture design, and other aspects. A set of manufacturing processes suitable for the straddle monorail beam-switching turnout is proposed, and the implementation effects of the proposed manufacturing process are verified. ［Result & Conclusion］ The adopted fixture frame and welding process can control the dimensional accuracy of each component within the design requirements. Coupled with vibration aging treatment, it effectively improves the distribution state of structural stress and reduces the risk of residual deformation after welding, so as to ensure that the linear dimensions of the turnout meet the standards after assembly.
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