Method for reducing displacement of turnout point rail

By adjusting the turnout structure, especially by adjusting the position of the last traction point and using inclined iron seats and special iron seats, the problem of insufficient displacement of the high-speed turnout switch rail was solved, thereby improving safety and stability while maintaining the universality of the turnout foundation structure.

CN115522411BActive Publication Date: 2026-06-09CHINA ACADEMY OF RAILWAY SCI CORP LTD +1
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Patent Information

Application Number
CN202210629228.1
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-06-01
Publication Date
2026-06-09
Estimated Expiration
2042-06-01

AI Technical Summary

Technical Problem

In existing technologies, the switch rail and frog rail of high-speed turnouts have a significant problem of insufficient displacement during conversion, which affects the safety and stability of train operation, and the modifications are too large to be widely adopted.

Method used

By adjusting the distance from the last traction point to the fixed end, and combining the use of inclined iron seats, narrow elastic bars, and specially designed iron seats, the turnout structure is optimized to reduce insufficient displacement. Specific steps include experimental research, testing, and local modifications.

Benefits of technology

It significantly reduces the insufficient displacement of the turnout switch rail, ensuring smooth and safe train operation, while not requiring large-scale modifications to the original turnout foundation structure, thus achieving compatibility with the original turnout.

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Abstract

The application discloses a method for reducing insufficient displacement of a turnout frog, comprising the following steps: S1, a set of high-speed turnouts of the same type as the type to be studied is laid, a last traction point is set to a specific working condition of different lengths from a fixed end, insufficient displacement, conversion force and minimum wheel flange groove are tested; S2, the moving amount is determined according to the test result; S3, the number X of sleepers and spans to be moved is determined according to the moving amount; S4, whether there is enough support distance l to place an iron seat is judged according to the support distance between the frog and the basic rail after the sleepers and spans are moved, if yes, step S5 is performed; otherwise, step S6 is performed; S5, X pieces of slide beds involved in the actual high-speed turnout to be studied are replaced with fixed base plates with iron seats, and step S7 is performed; S6, X pieces of slide beds involved in the actual high-speed turnout to be studied are replaced with fixed base plates with beveled iron seats; S7, the actual high-speed turnout is changed.
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Citation Information

Patent Citations

  • Device capable of eliminating insufficient displacement of switch rails

    CN105133441A

  • Device and method for detecting insufficient displacement of railway switch rail

    CN110243326A