Alloy steel combined frog in wedge-shaped structure

Abstract

The invention relates to an alloy steel combined frog in a wedge-shaped structure. Both side walls of a rail web of an alloy steel point rail are inclined surfaces with lower ends inclining to the inner part of the rail web so that the section of the rail web approaches to a wedge shape, and the inner end surfaces of wedge-shaped partition irons are inclined surfaces II attached to the inclined surface I; two wing rails are symmetrically positioned on both sides of the alloy steel point rail, two wedge-shaped partition irons are symmetrically positioned between the wing rail and the alloy steel point rail, the outer end surface of the wedge-shaped partition irons are matched with the side wall of the rail web of the wing rail, the inclined surfaces II of the inner end surfaces are tightlyattached to the inclined surfaces I, and the two wing rails, the two wedge-shaped partition irons and the alloy steel point rail are fixedly connected together by bolt connecting pairs and steel railgaskets; and two fork rails are symmetrically arranged on both sides of the tail part of the alloy steel point rail and positioned between the two wing rails, and the two fork rails, the alloy steel point rail and the two wing rails are fixedly connected together by the bolt connecting pairs, the steel rail gaskets and common partition irons. By the matching of the wedge-shaped alloy steel point rail and the wedge-shaped partition irons, the invention solves the problem of relative diastrophism between the alloy steel combined frog and the wing rails, enhances the integral stability of the frog and prolongs the service life of the whole set of frog.

Description

technical field [0001] The invention belongs to the technical field of railway turnouts, and in particular relates to a wedge-shaped alloy steel combined frog. Background technique [0002] The seamless line is the most prominent improvement and innovation of the track structure in the 20th century. The seamless line completely eliminates the rail joint in structure, reduces the impact and vibration of the train in the joint area, prolongs the service life of the wheel and rail components, reduces maintenance costs, and provides a smooth running surface, which is beneficial to train operation and Driving safety also brings many benefits. Alloy steel combined frog is the product of seamless lines. Because it can meet the on-site welding requirements of seamless lines, it has been widely used by various railway bureaus and gradually replaced fixed high-manganese steel integral parts on the main railway line. Cast frogs. [0003] Alloy steel composite frogs are assembled by ...

AI Technical Summary

Problems solved by technology

[0003] Alloy steel composite frog is assembled by alloy steel core rail and wing rail through spacer iron and high-strength bolts. Compared with fixed high manganese steel integral casting frog, the overall stability is not high

That is, in the process of using on the upper track, due to the inherent harmful space of the alloy steel composite frog, when the locomotive passes forward or reverse, the alternating stress generated by the impact of the wheels will cause the relative up and down movement between the core rail and the wing rail. And cause the bolts to loosen, which brings certain difficulties to driving safety and line maintenance

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