Curved switch rail, switch and turnout

Abstract

The utility model relates to a curved point rail, a switch and a turnout, which belong to the field of rail transportation. The switch rail includes a straight section and a curved section connected to each other. The line type of the separation half tangent of the curved point rail with a large separation value. By extending the length of the straight section at the front end of the curved point rail, the position of the maximum wear of the wheel rail is moved to the thick section of the point rail. The curved point rail with the above design structure can reduce the wear effect of the train, thereby increasing the service life of the curved point rail. In addition, the impact angle of the curved point rail is small, which can reduce the impact of the train and improve the safety of driving. It has the advantages of good wear resistance, long service life and good comfort.

Description

technical field [0001] The invention relates to the field of rail transportation, in particular to a curved point rail, a switch and a switch. Background technique [0002] At present, high-speed turnouts reduce the wear of curved point rails by developing alloy steel materials such as using bainitic point rails, optimizing the kinematics gauge of point switches, cutting basic rails to widen the point rails, and uniformizing the stiffness of the turnout area. In order to enhance the thickness of the point rail and ensure the wear resistance of the point rail, the curved point rail mostly adopts plane curves such as tangent type, half tangent type and separated half tangent type. The impact of the train entering the turnout on the tip of the switch and the lateral action of the wheel and rail due to the transition of the wheel load cause the largest side wear of the curved switch to occur at the front end of the switch, where the structure is weak and the top width is small, ...

AI Technical Summary

Problems solved by technology

The impact of the train entering the turnout on the tip of the switch and the lateral action of the wheel and rail due to the transition of the wheel load cause the largest side wear of the curved switch to occur at the front end of the switch, where the structure is weak and the top width is small, and it is easy to cause flash and drop of the switch. Blocks and other damage, reducing the safety of train operation

The turnout has many damages and short service life, which increases the operation and maintenance cost

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