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A platform for research: civil engineering, architecture and urbanism
turnout switch region asymmetric grinding steel rail profile design method
The invention discloses a turnout switch region asymmetric grinding steel rail profile design method. The method specifically comprises the steps that the turnout switch region steel rail profile is collected on site; the rolling circle radius difference of the actually measured wheel rail profile contact point position and the corresponding optimized rolling circle radius difference are calculated; selecting a turnout key section profile, discretizing the turnout key section profile, and selecting an optimization region; the optimized rolling circle radius difference is input into the wheel rail profile and then solved through a trace method, and therefore a relational expression of the profile and the rolling circle radius difference is constructed; and then solving to generate a polishing target profile. According to the method, the first stock rail and the second stock rail are asymmetrically ground respectively, the rolling circle radius difference of wheels on the left side and the right side is increased, the transverse movement range when a contact point is transferred to the inner rail side is reduced, and then the stability of a vehicle passing through a turnout is improved.
本发明公开了一种道岔转辙器区非对称打磨钢轨廓形设计方法，具体包括：现场采集道岔转辙器区钢轨廓形；计算实测轮轨廓形接触点位置的滚动圆半径差及对应的优化后滚动圆半径差；选取道岔关键断面廓形，对其进行离散化，选定优化区域；将优化后滚动圆半径差输入轮轨廓形后用迹线法求解，从而构建廓形与滚动圆半径差的关系表达式；然后进行求解即可生成打磨目标廓形；本发明方法通过分别对第一基本轨及第二基本轨进行非对称打磨，增大左右两侧车轮的滚动圆半径差，减小接触点向里轨侧转移时的横向运动范围，进而提高车辆通过道岔时的平稳性。
turnout switch region asymmetric grinding steel rail profile design method
The invention discloses a turnout switch region asymmetric grinding steel rail profile design method. The method specifically comprises the steps that the turnout switch region steel rail profile is collected on site; the rolling circle radius difference of the actually measured wheel rail profile contact point position and the corresponding optimized rolling circle radius difference are calculated; selecting a turnout key section profile, discretizing the turnout key section profile, and selecting an optimization region; the optimized rolling circle radius difference is input into the wheel rail profile and then solved through a trace method, and therefore a relational expression of the profile and the rolling circle radius difference is constructed; and then solving to generate a polishing target profile. According to the method, the first stock rail and the second stock rail are asymmetrically ground respectively, the rolling circle radius difference of wheels on the left side and the right side is increased, the transverse movement range when a contact point is transferred to the inner rail side is reduced, and then the stability of a vehicle passing through a turnout is improved.
本发明公开了一种道岔转辙器区非对称打磨钢轨廓形设计方法，具体包括：现场采集道岔转辙器区钢轨廓形；计算实测轮轨廓形接触点位置的滚动圆半径差及对应的优化后滚动圆半径差；选取道岔关键断面廓形，对其进行离散化，选定优化区域；将优化后滚动圆半径差输入轮轨廓形后用迹线法求解，从而构建廓形与滚动圆半径差的关系表达式；然后进行求解即可生成打磨目标廓形；本发明方法通过分别对第一基本轨及第二基本轨进行非对称打磨，增大左右两侧车轮的滚动圆半径差，减小接触点向里轨侧转移时的横向运动范围，进而提高车辆通过道岔时的平稳性。
turnout switch region asymmetric grinding steel rail profile design method
一种道岔转辙器区非对称打磨钢轨廓形设计方法
LIU TONG (author) / XU JINGMANG (author) / FANG JIASHENG (author)
2021-07-30
Patent
Electronic Resource
Chinese
Method for grinding turnout switch rail through intelligent steel rail grinding trolley
| European Patent Office | 2024