Vibration-reduction fastener system

Abstract

The invention discloses a vibration-reduction fastener system which comprises position-fixing bases, a rail-bearing plate and locking structures, wherein the lower parts of the position-fixing bases are column bodies used for being embedded in a rail foundation; the upper parts of the position-fixing bases are bosses used for being connected to the rail-bearing plate; the rail-bearing plate is provided with elastic bar bases and first through holes through which the bosses penetrate; and the locking structures are used for realizing the locking connection between the rail-bearing plate and theposition-fixing bases. The vibration-reduction fastener system is applicable to the field of rail transit. The vibration-reduction fastener system is capable of effectively overcoming the defects inthe prior art, effectively reducing the cost of the fastener system, effectively improving the overall strength and the service life of a fastener and effectively reducing the installation height of arail, thereby effectively avoiding the increase in tunnel construction cost due to high installation height and effectively improving the transverse stability of the rail at the same time.

Description

technical field [0001] This application relates to but not limited to the field of rail transit, especially a vibration-absorbing fastener system. Background technique [0002] In recent years, with the rapid development of rail transit systems represented by subways and intercity railways, the tension in urban traffic has been effectively alleviated; however, at the same time, the vibration and noise pollution brought by these transportation methods have also brought People's production and life have brought great troubles. [0003] Among them, as the connecting part between the rail and the sleeper, the rail fastener not only has the function of fixing the rail, but also its function of reducing vibration and noise has attracted more and more attention. Rail fastener products with noise reduction function. Among many vibration-damping fastener products, the detachable double-layer vibration-damping fastener realizes two-layer elastic body vibration damping to achieve a h...

AI Technical Summary

Problems solved by technology

[0006] 1. The cost of the above-mentioned double-layer damping fasteners is high;

[0007] In the technical solutions disclosed in the prior art, the double-layer damping fasteners all need two layers of metal iron backing plates, and the two layers of iron backing plates play different roles respectively; these two layers of metal iron backing plates are the most costly in the entire fastener system The two components account for more than 70% of the overall cost. Compared with the single-layer metal backing plate of ordinary fasteners, an additional layer of metal backing plate is added, which greatly increases the cost

[0008] 2. Nylon casing is prone to failure;

[0009] In the technical solutions disclosed in the prior art, the double-layer vibration-damping fasteners are screwed into the nylon casing by anchor spikes, so that the fasteners are fixed on the foundation of the ballast bed; wherein, the nylon casing is made of plastic material, and the anchor road The thread structure formed by the combination of the nail and its thread cannot withstand repeated disassembly and tightening. After several times of tightening, the thread of the nylon sleeve will fail, causing the fastener to be unable to be firmly fixed on the track bed foundation, which will bring hidden dangers to driving safety.

[0010] 3. The installation height of the rail is relatively high;

[0011] In the technical solutions disclosed in the prior art, there are two layers of metal backing plates in the double-layer damping fasteners, and the height of the fasteners is relatively high, usually above 14mm; this will cause the height from the bottom of the rail to the sleeper surface to be relatively high; The installation height is high. On the one hand, the cross-sectional height of the subway tunnel is required to increase, thereby increasing the construction cost of the tunnel; on the other hand, the higher the height of the rail to the sleeper surface, the worse the lateral stability of the rail, which affects the safety and security of the entire system. adverse effect on stability

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