Rail traffic fastener comprising insulating padding plate with bulge structures

Abstract

The invention discloses a rail traffic fastener comprising an insulating padding plate with bulge structures. The rail traffic fastener comprises the insulating padding plate, an elastic padding layer and an iron padding plate, wherein at least two installation through holes are formed in the insulating padding plate, the bulge structure is formed in each installation through hole, the bulge structure is provided with an axial central through hole in the direction vertical to a rail, the axial central through hole and the installation through hole in the insulating padding plate are penetrated through, the elastic padding layer is provided with a through hole in the position corresponding to the bulge structure, the iron padding plate is provided with an open hole matched with the end part of the bulge structure, and the end part of the bulge structure extends into the open hole of the iron padding plate, so that the iron padding plate is placed on the elastic padding layer. The insulating padding plate with the bulge structure overcomes the defect of lateral migration of the elastic padding layer and even the upper iron padding plate on an insulating buffer padding plate possibly caused by the horizontal interaction forces among the upper iron padding plate, the elastic padding layer and the insulating buffer padding plate in the fastener, and solves the problems of lateral migration or overturn possibly existing in the fastener at present.

Description

technical field [0001] The invention belongs to the technical field of fasteners in rail transit, in particular to a rail transit fastener comprising an insulating pad with a raised structure for rail transit. Background technique [0002] The fastener is a device used to fix the rail in rail transit, and is an important part of the rail structure. Its function is to connect the rail and the under-rail foundation into a whole, transmit the force on the rail to the under-rail foundation, and keep the rail under the rail. The correct position of the rail prevents the vertical and horizontal displacement of the rail, and at the same time provides a certain degree of rail elasticity, which has the effect of reducing vibration and noise. [0003] At present, in common urban rail transit in China, double-layer vibration reduction fasteners are widely used to lay vibration reduction and noise reduction road sections. For example, a typical double-layer nonlinear vibration damping ...

AI Technical Summary

Problems solved by technology

[0005] However, since the fastener will bear the lateral force of the track during the operation of the rail vehicle, in addition to the T-bolts therein or subject to a large lateral shear force, the upper iron backing plate, elastic backing, iron connecting rod and The insulating buffer pads bear a large interaction force, if the friction force between them is not enough to overcome the lateral interaction force, it will cause the elastic pad or even the upper iron backing plate to move sideways on the insulating buffer pad , the stress state of the fastener system changes, which affects the safety and stability of the track structure

Although the iron connecting rod is provided in the elastic cushion in the above technical solution, the iron connecting rod can be used to buffer a part of the lateral force, but on the one hand, because the elastic cushion needs to open a corresponding through groove to accommodate the iron connecting rod, The contact area between the elastic backing layer, the iron backing plate and the insulating backing plate is greatly reduced, which will further reduce the friction contact force between the three, so that the fastener still exists and the interaction force of each layer is low. On the other hand, this iron connecting rod connection requires additional new components, resulting in high cost and coordination and matching problems

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