Frog refers to the equipment used to make the wheel from one rail to another, which is composed of fork center, wing rail and connecting parts.
A railway frog is a track level crossing device that enables the train wheels to switch from one line to another
According to the plane form, there are two types of straight frog and curve frog; According to the structure type, there are two types: fixed frog and movable frog.
There are two types of straight fixed frog, namely, integrally cast frog and rail combination frog. The integral frog is made of high manganese steel. High manganese steel is an alloy steel with high manganese and carbon content, which has high strength and good impact toughness. After heat treatment, it will soon harden under impact load, making the surface have good performance. At the same time, because the center rail and wing rail are cast at the same time, the integrity and stability are good. The rail and other parts of the rail combined frog are planed and assembled, and are composed of long gauge rail, short gauge rail, wing rail, spacer, frog pad and other parts. It is easy to obtain materials, has no special process requirements, and is convenient for processing and manufacturing
Frogs are divided into 8kg/m, 12kg/m, 15kg/m, 18kg/m, 22kg/m, 24kg/m, 30kg/m, 38kg/m, 43kg/m and other models according to the rail model. According to the number of turnout, it can be divided into 2, 3, 4, 5, 6, 7, 8, 9, 10, etc. It can be divided into two types: low alloy steel integral casting and rail assembly.
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