Bridge stretching device

Abstract

The invention discloses a bridge stretching device. The bridge stretching device comprises two connecting pieces and a waterproof rubber strip. The connecting pieces are arranged on bridge end water stopping tables of two adjacent bridge bodies respectively; the waterproof rubber strip is arranged on a bridge seam between the two adjacent bridge bodies; the two ends of the waterproof rubber strip are connected with the two connecting pieces respectively; a groove extending in the bridge seam is formed in the middle of the waterproof rubber strip; the height of the waterproof rubber strip in the direction of the bridge seam can be adjusted, namely, the height of the middle of the bottom of the groove of the waterproof rubber strip is larger than the height of the two sides of the bottom of the groove, and a water draining slope is formed on the surface of the groove of the waterproof rubber strip. By means of the bridge stretching device, it can be avoided that a water draining hole is formed in the middle of the waterproof rubber strip, the durability of the stretching device is improved, and the workloads and the cost of the bridge stretching device during later maintenance are reduced.

Description

Technical field [0001] The invention relates to railway bridge technology, in particular to a bridge expansion device. Background technique [0002] The bridge expansion device is an important connecting component between the ends of the railway bridge beams. It plays an important role in the expansion, drainage, and waterproof performance of the bridge ends. Its quality and performance will directly affect the durability of the entire bridge. Indispensable important product. [0003] Because the bridge expansion device is set on the weak part of the bridge deck at the end of the beam, and has been subjected to various natural environmental influences, it is often damaged in various degrees and is not easy to repair, which affects the overall durability of the bridge. [0004] In the prior art, the conventional telescopic device of the existing ballastless railway bridge is provided with a drainage hole or a drain hole in the middle of the waterproof rubber strip. Since the waterpro...

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Problems solved by technology

[0003] Because the bridge telescopic device is installed on the weak part of the bridge deck at the beam end and has been subjected to various natural environments, it often suffers various degrees of damage and is not easy to repair, thus affecting the overall durability of the bridge

[0004] In the prior art, the conventional telescopic devices for ballastless railway bridges are equipped with drain holes or drain holes in the middle of the waterproof rubber strips. Since the waterproof rubber strips are connected by rubber strips and PVC drain pipes, their durability cannot be guaranteed. , once water leaks, maintenance and replacement are difficult, which will not only accelerate the damage of the beam end structure, reduce the service life of the beam body, but also cause adverse effects on the environment under the bridge

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