Low-noise small size frog using single moving nose rail

Abstract

The invention relates to a frog technique for a railway switch, and provides a low-noise small size frog using single moving nose rail. The frog comprises two wing rails and two fork rails; a wedge-shaped moving nose rail is arranged between wing rail throats and the fork rails, the tip end is located at the throats of the wing rails, and the bottom abuts the ends of the fork rails; the frog further comprises two spaced irons arranged on the outsides of the fork rails and the moving nose rail; the rear sections of the spacing irons closely fit the fork rails and the wing rails and are fixed bybolts, the front sections protruding from the end portions of the fork rails are fixed by studs with bosses, set spacing is maintained between the two front sections, the bottom end of the moving nose rail is located in the set spacing and the moving nose rail can be swung under the action of an electric power conversion drive rod. The frog swings through the moving nose rail, eliminates the discontinuity of the harmful space of an existing fixing frog and a gauge line, greatly reduces the impact and noise when a vehicle passes, has a compact structure and can be mutually changed with the existing fixing frog.

Description

technical field [0001] The invention relates to a frog for railway turnouts, in particular to a frog with low noise and small numbers using a single movable core rail. Background technique [0002] For small-number turnouts below No. 9, due to their low passing speed, fixed frogs are generally used. The structure is as follows: figure 1 shown. There is a harmful space in the fixed frog, and the gauge line of the frog is interrupted at this part, which causes the impact on the frog to be intensified when the vehicle passes through this part, and it is easy to cause damage to the wing rail and core rail of the frog, which often occurs in actual operation. A large number of frogs are forced to go down the road only because of the damage of the rail parts in the harmful space. In addition, many subway stations in modern urban construction are commercial areas. In order to improve the utilization rate of land, the architectural design of upper commercial areas or residential ar...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the frogs used for turnouts mainly use vibration-absorbing fasteners to reduce noise, but there has been no good solution for the noise of the harmful space parts of the frogs.

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