Modern streetcar fastener system

Abstract

The invention discloses a modern streetcar fastener system, which comprises a substrate (3). Cylindrical and ellipsoidal combined substrate grooves (301) are formed in the bottom surface of the substrate (3), gas vents are formed between the substrate grooves (301), a contact area between the substrate (3) and concrete is increased, a gauge stop block (11) is arranged on the side, close to a track(12), of the top of the substrate (3), a height adjustment cushion block (4) is arranged on the outer side of the gauge stop block (11), and elastic strips (8) are arranged at the tops of the gauge stop block (11) and the height adjustment cushion block (4); and the positions, corresponding to the elastic strips (8), of the substrate (3) are provided with elastic strip installation grooves (302),and the position, corresponding to the height adjustment cushion block (4), of the substrate (3) is provided with a height adjustment cushion block seat (303). According to the modern streetcar fastener system, the more concrete flows into a cavity in the bottom of the substrate, it is ensured that the concrete fully enters the substrate, after construction is completed, the substrate and the lower concrete form a whole, overall bearing capacity of the fastener system is improved, and loads from vehicles are resisted better.

Description

technical field [0001] The invention belongs to the technical field of production and manufacture of tram track components, and more particularly relates to a modern tram car fastener system. Background technique [0002] The modern tram system is developed by major cities in the world to solve the shortcomings of the existing subways such as expensive investment and long construction period. The modern tram system has been upgraded and transformed on the basis of the old tram system, so that it has the characteristics of low noise, low vibration, green environmental protection, less investment and quicker results. It is a new direction for the development of urban rail transit to suburban areas. . [0003] Since the modern tram system uses grooved rails that are different from conventional railway rails, the existing railway fastener system cannot fully meet the needs of modern tram line laying, and at the same time, in order to meet the requirements of low noise, low vibr...

AI Technical Summary

Problems solved by technology

[0003] Since the modern tram system uses grooved rails different from conventional railway rails, the existing railway fastener system cannot fully meet the needs of modern tram line laying, and at the same time meet the requirements of low noise, low vibration and low cost The fastener system must also consider the requirements for vibration and noise reduction

[0004] In order to solve the above problems, some units have proposed modern tram fasteners, which adopt an elastic non-separable structure, and the grooved rails are directly connected to the track bed through spiral spikes, which can greatly reduce the production cost of fasteners. However, engineering practice has proved that There are still the following problems to be solved urgently: (1) The combination of the installation backing plate and the lower concrete is not tight enough, which will cause diseases under the operating conditions of the vehicle and affect the safety of the vehicle; Direct contact with external soil and other environments is prone to rust and other damage, which will affect the performance and service life of structural components such as B-type springs and spring seat height adjustment pads; (3) grooved rails are directly bought underground, trams During high-speed driving, it is easy to cause excitation, and the effect of vibration reduction and noise reduction is relatively poor; (4) the grooved rail of the fastener is directly in contact with the installation backing plate, and the height adjustment range is small, which is difficult to meet the requirements of modern tram rail surface elevation adjustment. Requirements; (5) The bolts of the fastener system adopt the conventional design similar to subway fasteners, which need to be re-tightened frequently. At present, most of the tram fasteners are embedded, and the later maintenance is difficult

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