A Constraint-Guided Rail Vibration Damping Fastener Structure

Abstract

The invention discloses a constraint guiding type railway vibration damping fastener structure. An under-board elastic backing board of the structure is laid on a sleeper, and a rail bearing iron backing board is mounted on the upper surface of the under-board elastic backing board in a clamped mode. An annular spacer ring with the shape being matched with the shape of the outer contour of the middle of the rail bearing iron backing board is protruded from the upper surface of constraint insulation sleeve, and the rail bearing iron backing board is sleeved with the constraint insulation sleeve through the annular spacer ring. An outer frame constraint iron backing board is mounted above the constraint insulation sleeve in a clamped mode, and the inner contour of the outer frame constraint iron backing board is matched with the outer contour of the annular spacer ring. The outer frame constraint iron backing board, the constraint insulation sleeve, the rail bearing iron backing board and the under-board elastic backing board are levelly pressed on the sleeper or a track bed in a buckling mode through spiral track spikes, and the rail bearing iron backing board is constrained through the outer frame constraint iron backing board and the constraint insulation sleeve. An under-rail elastic backing board is placed on the upper surface of the rail bearing iron backing board, and a steel rail is laid on the under-rail elastic backing board. The steel rail is compressed on the under-rail elastic backing board through gauge cushions and elastic strips. Vibration and noise generated at the time of passing of a train can be effectively lowered, and taking comfort is improved.

Description

technical field [0001] The invention belongs to the technical field of rail transit fasteners, and in particular relates to a restraint-guided rail damping fastener structure. Background technique [0002] Fasteners are an important part of the track structure, which can fix the rail and ensure the accurate position of the rail, bear the load when the train passes, and resist the force transmitted from the wheel to the rail; at the same time, it can ensure the insulation and elasticity of the track. Reduce the vibration when the train passes and provide good ride comfort. With the development of society and the improvement of people's living standards, major cities have put forward higher requirements for the construction of urban rail transit, and many road sections need to take measures to reduce vibration and noise, which requires the fastener system to have high vibration reduction performance . [0003] The closest prior art to the present invention is a double-layer ...

AI Technical Summary

Problems solved by technology

The fastener has a relatively good vibration reduction effect, but it has many parts, complex structure, and poor reliability. Once it fails, it is difficult to disassemble the fastener. The entire fastener system needs to be removed when repairing and replacing the elastic pad under the plate; The height is significantly larger than that of ordinary fasteners, and the interchangeability and versatility are poor

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