Small-size vibration and noise reduction frog structure for rail transit

Abstract

The invention discloses a small-size vibration and noise reduction frog structure for rail transit. The small-size vibration and noise reduction frog structure at least comprises a point rail, a wingrail, a fork heel rail, spacer iron and a conversion device, the heel end of the point rail and the front end of the fork heel rail adopt a spacer iron type movable joint structure or a spacer iron type double-limb inclined joint structure, the front end of the spacer iron is tightly attached to the wing rail, a certain gap is reserved between the spacer iron and the point rail, the rear end of the spacer iron is tightly attached to the wing rail and the fork heel rail, one side of the front end of the point rail is connected with one end of the traction rod, and the other end of the tractionrod is connected with the conversion device so as to drive the traction rod through the conversion device to pull the point rail. Therefore, the small-size vibration and noise reduction frog structureis simple in structure, convenient to assemble, disassemble and maintain, capable of meeting the vibration reduction requirements of various rails, made of alloy steel materials, capable of effectively improving the strength and prolonging the service life, capable of saving space and capable of overcoming various defects existing in an existing small-size turnout due to the fact that a fixed frog is adopted.

Description

technical field [0001] The invention relates to the technical field of rail transit vibration reduction and noise reduction, in particular to a small-number vibration reduction and noise reduction frog structure for rail traffic. Background technique [0002] Urban rail transit lines generally pass through densely populated areas such as urban work and life. The noise and vibration generated during its operation will have a certain impact on the surrounding environment. In severe cases, it will cause complaints from residents along the line. The vast majority of complaints are vibration and noise issues. Urban rail transit turnouts generally adopt fixed frog structures. Due to the existence of harmful spaces, when trains pass through the turnouts, the wheel-rail impact is relatively large, which increases vibration and noise. In order to avoid the problem of harmful space in fixed frogs, elastic bendable movable core rail frogs are mainly used at present, but frogs of this ...

AI Technical Summary

Problems solved by technology

Due to the relatively tight urban land use, the control of the area occupied by the depot is the focus of the design. If this type of elastic, bendable and movable core rail frog is used due to the demand for vibration and noise reduction, it will increase investment on the one hand and bring more benefits to the station on the other hand. Field design poses difficulties

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