Combined railway frog

Abstract

The invention relates to a combined railway frog, belonging to the technical field of manufacturing of railway frogs. The combined railway frog comprises a frog center and wing rails arranged at the two sides of the frog center, wherein the wing rail is composed of a front common steel rail section, a rear common steel rail section and an alloy steel reinforced section arranged between the front and rear common steel rail sections, the combined railway frog is characterized in that the alloy steel reinforced section and the common steel rail sections are joined in a transition way by adoptinglimit matching lines, an interval iron block is arranged at the limit matching line between the two wing rails, the interval iron block is arranged at the limit matching line between the wing rails and the frog center, and the two wing rails as well as the wing rail and the frog center are connected by bolts penetrating through the interval iron blocks. The combined railway frog provided by the invention has the advantages that two rails made of different materials can be guaranteed to have good conformance while the high abrasion resistance of the wing rail is guaranteed, and the shock resistance of the frog is improved. Meanwhile, the combined railway frog is easy to manufacture, the integrity after combination is strong, and the stability is good. Thus the combined railway frog is especially applicable to high-speed railways.

Description

technical field [0001] The invention relates to a frog structure, which belongs to the technical field of railway turnout manufacture. Background technique [0002] A railway frog consists of a fork core and wing rails arranged on both sides of the fork core. (referring to China Railway Publishing House, 2000 college teaching material " railway engineering " the 96th page~99 pages) when train crosses, wing rail is subjected to the impact of wheel and wears seriously. In order to solve this problem, the current practice is to strengthen the strength of the wear-resistant section of the wing rail. For example, in the current welded frog, the wing rail is welded by a common section and an alloy steel reinforced section. The disadvantage of this welded frog is that it is difficult to manufacture due to the difficulty of welding between different steel materials; the second is that the impact resistance of the weld is poor, and the high-speed impact of the wheel when used in hig...

AI Technical Summary

Problems solved by technology

The disadvantage of this welded frog is that it is difficult to manufacture due to the difficulty of welding between different steel materials; the second is that the impact resistance of the weld is poor, and the high-speed impact of the wheel when used in high-speed railways is easy to damage it.

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