Rail fastening

Abstract

The present invention belongs to the field of railroad system, in the concrete it relates to a kind of fastener for urban railroad traffic yard line (containing column-type and wall-type inspection pit line) rail positioning connection. Said fastener is characterized by that on the surface of iron soleplate two groups of iron seats are set so as to implement positioning and fixation of T-type screw bolt. At the same time the related structures of iron soleplate and raid gauge plate are optimized, and its rail gauge regulation quantity is + 8mm-14mm, and the regulation level difference is 1mm. Said fastener can be conveniently and reliably mounted, and its cost can be reduced.

Description

technical field [0001] The invention relates to railway systems, in particular to a fastener used for rail positioning and coupling of urban rail transit depot lines (including column-type and wall-type inspection pit lines). Background technique [0002] Rail fasteners in the prior art, such as yard line fasteners, use T-bolts to fix the rails to the iron backing plate through the national railway A-shaped clip buckle. National Railway A-type elastic strips and two types of gauge pads (4 pieces with 4 numbers in the middle of the rail and 4 pieces with 4 numbers at the joints of the rails), the utilization rate of the gauge pad is low, and the gauge pad is used to adjust the level difference of the gauge It is 2mm, and the gauge adjustment amount is +8~-12mm. It is difficult to adjust the zero-gauge requirement for the special line of the depot line; 18mm iron backing plate and 10mm under-rail rubber backing plate are used, which are thicker; thicker rails are used With th...

AI Technical Summary

Problems solved by technology

National Railway A-type elastic strips and two types of gauge pads (4 pieces with 4 numbers in the middle of the rail and 4 pieces with 4 numbers at the joints of the rails), the utilization rate of the gauge pad is low, and the gauge pad is used to adjust the level difference of the gauge It is 2mm, and the gauge adjustment amount is +8~-12mm. It is difficult to adjust the zero-gauge requirement for the special line of the depot line; 18mm iron backing plate and 10mm under-rail rubber backing plate are used, which are thicker; thicker rails are used With the method of lower backing plate, the horizontal height adjustment is only 10mm; when fixing the rail with fasteners, it is necessary to open rectangular and circular holes on the iron backing plate, then insert T-bolts into the holes, and rotate 90° to realize Positioning, water, oil, etc. are easy to accumulate at the hole position, which is not conducive to maintenance and maintenance, and is easy to pollute the track bed; and because there are many types of gauge pads for existing fasteners, the length of the A-type elastic strip is long, and the iron backing plate and the rubber under the rail The backing plate is thicker, so that the material price of each set of fasteners needs to be 118 yuan, which is relatively high

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