Method and device for designing wedge-type mounting floating rail vibration damping noise reduction fastener

Abstract

The invention discloses a design method and a device for a wedge-mounting vibration-absorbing noise-reducing fastener of a floating rail. The device consists of a high molecular elastic part (2), an inverse V-shaped bracket (3), a wedge block (4), a bottom plate (5), a pitch-adjustment pinch plate (6), an anti-collision liner plate (7), bolts (8), height-adjustment liner plates (10), and coupling liner plates (11). The radian of one end surface of the high molecular elastic part is matched with that of the side surface of a steel rail, while the other end surface of the high molecular elastic part is provided with the inverse V-shaped bracket which is fixed by the wedge block of a groove of the bottom plate. The contact surface that the wedge block contacts the bottom plate is an insection surface, and the contact surface that the wedge block contacts the bottom plate and the inverse V-shaped bracket is an inclined (wedge) surface, thereby ensuring that the rail bottom of the steel rail is in a suspended state and the whole steel rail performs elastic movement under the supporting of the inverse V-shaped bracket. The insulating anti-collision liner plate is arranged to limit the vertical displacement of the steel rail. Both ends of the bottom plate are provided with racetrack type pin holes, and the rail gauge is adjusted by adjusting the installation space between the pitch-adjustment pinch plate and the pin hole of the bottom plate. The height-adjustment liner plates and the coupling liner plates are arranged under the bottom plate according to the height adjustment need and are fixed on an underrail foundation by the bolts.

Description

technical field [0001] The invention belongs to the technical field of rail vibration reduction and noise reduction, in particular a wedge-type installed floating rail vibration reduction and noise reduction fastener suitable for laying new lines such as urban subways, light rails, intercity railways, and high-speed rail traffic, or reconstructing old lines. Design method and device. Background technique [0002] In recent years, my country's subway, light rail and other urban rail transit systems have developed rapidly, effectively alleviating the tension in urban traffic, but how to control the vibration and noise pollution generated during the operation of rail transit has become an urgent problem to be solved. The application of vibration and noise reduction fasteners is an effective treatment method. The basic structure of the currently used fastener system is to set one or more layers of low-rigidity elastic backing plates under the rails, the upper part is fastened b...

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Problems solved by technology

[0003] 1) It is easier to realize the connection method of the rail foot with the elastic strip buckle, but this buckle method leads to a large torsional moment arm between the stressed part (rail head) and the constrained part (rail foot) of the rail, which increases the transverse tension of the rail. The amplitude affects the safety of driving;

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