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rail fastening device

A technology for fastening devices and rails, applied in the directions of tracks, fixed rails, roads, etc., can solve problems such as complex devices and reduce risks.

Active Publication Date: 2015-09-16
PANDROL LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In general, a device that can adjust the vertical height must be more complicated than a device that cannot adjust the vertical height

Method used

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Examples

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Embodiment Construction

[0021] Such as Figures 1A to 1D As shown, the first rail fastening device according to the present invention comprises a base plate 20 for receiving and fixing to the rail 10 and first and second base plate fixing elements, the first and second base plates The fixing elements fix the base plate 20 to the base plate seat area 2 of the concrete rail foundation 1 . When the device is in use, the electrically insulating buffer substrate pad 50 sits below the substrate 20, above the substrate seating area 2 of the rail base 1, and the electrically insulating buffer underrail pad 60 sits below the rail 10, the substrate 20. above the rail seat area 25. On either side of the rail seat area 25 of the base plate 20, the base plate 20 has shoulders 21 for securing respective elastic rail fasteners 22.

[0022]The fasteners 22 have respective tip insulators 23 to provide electrical insulation between the fasteners 22 and the rail 10, while the shoulders 21 have side post insulators 24 ...

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Abstract

A railway rail fastening apparatus has a baseplate for receiving a railway rail to be fastened thereto and baseplate securing elements for securing the baseplate to a baseplate seat area of a concrete railway foundation. The baseplate securing elements carry first and second fastening assemblies configured for location on the concrete rail foundation on opposite sides of the baseplate seat area. Each of the first and second fastening assemblies including fixing member having a first part that extends from the baseplate member for retention within the concrete rail foundation. Only the fixing member of one fastening assembly includes a screw-threaded fastener.

Description

technical field [0001] The present invention relates to rail fastening devices, particularly, but not exclusively, for use with concrete slab tracks. Background technique [0002] Rail fastening devices for concrete slab tracks of urban and / or underground railway systems are generally required to have a lower stiffness than fastening devices for ballasted tracks in order to compensate for the loss of elasticity otherwise caused by ballast. Such a rail fastening device includes a base plate having rail fastening shoulders on either side of its rail seating area, a buffer / insulating rail underlay plate in the rail seating area, and a base pad , the base plate is placed between the concrete rail base and the base plate. Most of the elasticity in the system is provided by the substrate pads. The base plate itself must be anchored to the slab track, and this is usually done in the prior art with threaded fasteners, such as bolts or screws, passed through holes in the base plate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01B9/28E01B9/36
CPCE01B9/36E01B9/28E01B9/303
Inventor 史蒂芬·约翰·考克斯约翰·菲利浦·波利尔安东尼·艾德迪普尼古拉斯·劳埃德
Owner PANDROL LTD