High-spring vibration reduction iron backing plate

Abstract

The invention relates to a high-elasticity damping iron liner plate, which is used below a steel rail in ballastless track engineering and fixed on a concrete ballast bed. The damping iron liner plate comprises a base (1), a rubber ring (2) and a support rail plate (3); the base (1) and the support rail plate (3) are made of cast iron, the base (1) is in shape of square block, the middle of the base (1) is vertically provided with an inverse oval table shaped through hole (1.1), the support rail plate (3) is placed into the oval table shaped through hole (1.1), the rubber ring (2) consists ofa rubber ring (2.1), a bottom washer (2.2) and a rubber cushion block (2.3), the bottom washer (2.2) is extended from the bottom edge of the rubber ring (2.1) to the center of the rubber ring (2.1) and arranged as an oval shape, and the rubber cushion block (2.3) is extended from a long shaft end of the bottom washer (2.2) to the center of the bottom washer (2.2) and arranged as a block shape. The high-elasticity damping iron liner plate has good dynamic property and long service life.

Description

(1) Technical field [0001] The invention relates to a rail fastener for rail transit. In particular, it relates to a vibration damping pad for rail transit. It is used under the steel rail in the ballastless track (Non Ballasttrack) project and fixed on the concrete track bed. It belongs to the technical field of damping products. (2) Background technology [0002] At present, there are two structural forms of the elastic damping backing plate for rail transit produced by the manufacturer: one is a pure shear elastic iron backing plate, usually with an oval appearance, consisting of a rubber ring and a rail bearing plate (rail bearing plate) And a base (pedestal) cemented composition. It uses the shear deformation of the rubber ring to provide elastic deformation of the vibration-damping backing plate; the other is a purely compressed elastic iron backing plate, usually with a square appearance, consisting of several rubber blocks at the bottom, the rail bearing plate and...

AI Technical Summary

Problems solved by technology

Although the former has better dynamic performance, after being put into use, due to the large alternating stress of the rubber ring, the performance decays rapidly, which makes it unable to meet the long-term use requirements of rail transit; although the latter has a longer service life, due to the structure It is limited to use the rubber block to produce compression deformation, the dynamic performance is not good, and the vibration damping effect is poor, so these two products have their own advantages and disadvantages

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