Embedded combined high manganese steel frog

Abstract

The invention discloses an embedded combined high manganese steel frog, which is provided with a frog center, frog heel rails and wing rails, wherein the frog center is integrally cast by a high-strength wear-resistant material and is embedded between two symmetrical wing rails, and the two wing rails and the frog center are connected and fixed through a bolt connecting pair and a steel rail gasket; and two frog heel rails are symmetrically connected and fixed on two sides of the tail of the frog center and are positioned between the two wing rails, and the two wing rails, the tail of the frog center and the two frog heel rails are connected and fixed through the bolt connecting pair, the steel rail gasket and a filler. The frog center is integrally cast by the high-strength wear-resistant material and the surface of the frog center is hardened, so that the service life of the high manganese steel frog is prolonged, and the requirement of an overloading railway is met; and steel railsare subjected to on-line heat treatment at two ends of the frog, so that the problem of field welding of laying of continuous welded rails is solved.

Description

technical field [0001] The invention relates to an embedded combined high manganese steel frog, which belongs to the technical field of railway turnouts. Background technique [0002] With the rapid development of the national economy, the speed of railway operation is increasing day by day, which puts forward higher requirements for the turnouts used on the line. As a key component of the turnout, the frog directly affects the service life and operation speed of the turnout. Since the fixed high manganese steel cast frogs cannot be directly welded with the line rails at the laying site, they cannot meet the requirements of inter-interval seamless lines, and their service life is short, so they are gradually replaced by alloy steel composite frogs on the main railway line. replace. Although the alloy steel combined frog solves the problem of on-site welding of seamless lines and improves the service life of the core rail, the top surface of the wing rail wears quickly beca...

AI Technical Summary

Problems solved by technology

The fixed high manganese steel cast frogs cannot be directly welded with the line rails at the laying site, cannot meet the requirements of seamless lines across sections, and have a short service life, and are gradually being replaced by alloy steel composite frogs on the main railway line replace

Although the alloy steel combined frog solves the problem of on-site welding of seamless lines and improves the service life of the core rail, because the wing rail is made of ordinary steel rails, the top surface of the wing rail wears quickly, and the alloy steel core cannot be fully utilized. Due to the wear-resistant characteristics of the rails, the whole set of frogs will go down due to the wear of the wing rails to the limit, which cannot meet the user's requirements for long life and less maintenance.

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