Manufacturing method for separation type double-layer turnout shock-absorbing fastener system

Abstract

The invention belongs to the technical field of rail transit and provides a manufacturing method for a separation type double-layer turnout shock-absorbing fastener system. The manufacturing method for the separation type double-layer turnout shock-absorbing fastener system comprises the steps that an upper iron base plate (3) with the required size, a lower iron base plate (1) with the required size, and a middle rubber base plate (2) with the required size are obtained in a direct cutting way; protruding stand columns (9) are welded to corresponding positions of the lower iron base plate (1); a plurality of bosses (10) are welded to the middle of the lower iron base plate; connecting pieces connected with a steel rail are welded to corresponding positions of the upper iron base plate; the protruding stand columns of the lower iron base plate are sleeved with nylon self-locking sleeves (4), and distance adjustment buckle plates (5) are arranged at the upper ends of the protruding stand columns; and anchor bolts sequentially penetrate through through holes of the distance adjustment buckle plates and through holes in the protruding stand columns of the lower iron base plate, so that the separation type double-layer turnout shock-absorbing fastener system is fixed to a ballast bed foundation. By the adoption of the manufacturing method for the separation type double-layer turnout shock-absorbing fastener system, the problem that in the prior art, tilting of fasteners is caused due to the flatness of cast base plates is solved, and the overall stability of a turnout is improved.

Description

technical field [0001] The invention belongs to the technical field of rail transit, and specifically proposes a manufacturing method of a separate double-layer turnout damping fastener system. Background technique [0002] my country's current turnout vibration-damping fasteners mainly have three structural types, namely vulcanized base + iron backing plate form, double-layer vulcanized fasteners, and vibration-damping turnout base system. [0003] The vulcanized base + iron backing plate type fastener adopts the vulcanized bonding type vibration-absorbing base as the vibration-absorbing unit, and the iron backing plate of the turnout fastener is used as the rail connecting unit; the vulcanized base is to vulcanize the upper iron plate and the lower iron backing plate through rubber The method makes the upper iron plate and the lower iron backing plate bonded into an inseparable whole. The structure and mechanism of the double-layer vulcanized fastener are similar to the vu...

AI Technical Summary

Problems solved by technology

Although this system solves the problem of parts replacement, it adopts a three-layer iron backing plate structure, which has high cost, many parts and complex structure, which is not conducive to on-site installation and maintenance.

[0007] In the patent (ZL201120345928.5), a replaceable rail damping fastener for rail transit is proposed, which can facilitate the replacement of fastener parts; however, the upper and lower iron backing plates of the fastener are connected by spring bars, poor system stability

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