Automatic adjusting device for thermal expansion and cold contraction of railway fastener

Abstract

The invention relates to the technical field of rail transit, and discloses an automatic adjusting device for thermal expansion and cold contraction of the railway fastener. The device comprises a sleeper body, the sleeper body is built by concrete, two clamping plates are placed at the top of the sleeper body, the clamping plates are in a Z shape and are fixed to the sleeper body through fixing bolts, fixing holes are formed in the tops of the clamping plates, and teeth are arranged at the bottom of a base plate and openings of the fixing holes. The utility model discloses a railway fastenerthermal expansion and cold contraction automatic adjusting device. A connecting plate and a mounting block are mounted between a clamping plate and a rail; rail when heated to expand, the mounting block is pushed by the movable connecting plate to move obliquely upwards; when the installation blocks slide along the rolling wheels and the rail contracts, the connecting plates move obliquely downwards, so that the distance between the clamping plates and the installation blocks is increased during expansion, expansion space is provided for the rail, the distance between the clamping plates and the installation blocks is reduced during contraction, the rail is kept in a clamped state all the time, and the safety of the rail is improved.

Description

technical field [0001] The invention relates to the technical field of rail transit, in particular to an automatic adjustment device for thermal expansion and cold contraction of railway fasteners. Background technique [0002] my country is the most populous country in the world, and the population is still rising. Therefore, in order to ensure the normal circulation of the population, the railway transportation industry has developed rapidly. [0003] The railway is a road where the rails are fixed on the sleepers to facilitate the running of trains or high-speed rail. The rails and the sleepers are tightly fixed by fasteners. In spring and autumn, the temperature difference between day and night is large. When the temperature rises during the day, the rails and fasteners are affected. Thermal expansion, mutual extrusion, night temperature drop, rails and fasteners contracted by cold, so that the rails and fasteners are repeatedly subjected to thermal expansion and contrac...

AI Technical Summary

Problems solved by technology

[0003] The railway is a road where the rails are fixed on the sleepers to facilitate the running of trains or high-speed rail. The rails and the sleepers are tightly fixed by fasteners. In spring and autumn, the temperature difference between day and night is large. When the temperature rises during the day, the rails and fasteners are affected. Thermal expansion, mutual extrusion, night temperature drop, rails and fasteners contracted by cold, so that the rails and fasteners are repeatedly subjected to thermal expansion and contraction, and may be deformed, resulting in loosening between the rails and sleepers, affecting the passage of trains. Therefore, we have proposed an automatic adjustment device for thermal expansion and contraction of railway fasteners to solve the problem.

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