Product features and advantages of new railway turnouts
- What structural improvements does the new - type turnout have compared with the traditional turnout?
The new - type turnout adopts a movable - point frog structure, eliminating the harmful space and increasing the train's turnout - passing speed. The turnout - passing speed of high - speed turnouts can be increased to 250 - 350 km/h. At the same time, the switch machine setting is optimized, and a multi - machine traction method is used to enhance the reliability and flexibility of turnout conversion and reduce the switch resistance by 30% - 40%. In the design of turnout sleepers, new - type concrete turnout sleepers are used, which have higher strength and better stability.
- What special materials are used in the new - type turnout?
High - strength alloy steel is used for the frog point rail and wing rail, with a yield strength of over 1000 MPa. Its wear resistance is 2 - 3 times higher than that of ordinary steel, effectively extending the service life of the frog. The switch rail uses special alloy steel, which has good toughness and workability and can adapt to frequent switching actions. The turnout sleepers use concrete with a strength grade of C60 or above, and are internally equipped with high - strength prestressed steel bars to enhance the bearing capacity of the turnout sleepers.
- What improvements have been made in the manufacturing process of the new - type turnout?
Advanced CNC machining technology is used to control the machining accuracy of each component of the turnout within ±0.1mm, ensuring the fitting accuracy between components and improving the overall performance of the turnout. In the welding process, automated welding equipment and intelligent welding control systems are used to ensure weld quality and reduce welding defects. The strength and toughness of the welded joints are equivalent to those of the base metal. In addition, the turnout is subjected to overall quenching and surface strengthening treatment to improve its wear - resistance and fatigue - resistance performance.
- What is the application effect of the new - type turnout in high - speed and heavy - haul railways?
In high - speed railways, the new - type turnout can ensure the high - speed and stable passage of trains, reducing the bumping and vibration of trains and improving the riding comfort of passengers. For example, on a 350 - km/h high - speed railway line, after using the new - type turnout, the wheel - rail impact force when the train passes through the turnout is reduced by 40% - 50%. On heavy - haul railways, with its high strength and high wear - resistance, the new - type turnout can effectively cope with the frequent rolling of heavy - haul trains. The service life of the frog is extended from 3 - 5 years of the traditional turnout to 8 - 10 years, reducing maintenance costs by more than 50%.
- What are the maintenance key points of the new - type turnout?
Regularly check the geometric dimensions of the turnout, including gauge, level, height, etc., and adjust them in a timely manner if the deviation exceeds the allowable range. Maintain the switch machine and other equipment to ensure its flexible and reliable operation. Check the wear of each component of the turnout, especially the key parts such as the frog and switch rail, and replace them in a timely manner if the wear exceeds the standard. Strengthen the maintenance of the turnout ballast bed, keep the ballast bed clean and dense, and provide a stable basic support for the turnout.