An automatic adjustment device for thermal expansion and contraction of railway fasteners

Abstract

The invention relates to the technical field of rail transit, and discloses an automatic adjustment device for thermal expansion and cold contraction of railway fasteners, including a sleeper, which is made of concrete, and two splints are placed on the top of the sleeper, and the shape of the splints is Z Shape, fixed on the sleeper by fixing bolts, the top of the splint is provided with a fixing hole, and the bottom of the backing plate and the opening of the fixing hole are both provided with teeth. The automatic adjustment device for thermal expansion and cold contraction of railway fasteners installs a connecting plate and a mounting block between the splint and the rail. When the rail is heated and expands, the moving connecting plate pushes the mounting block to move obliquely upward, and the mounting block slides along the rollers. , when the rail shrinks, the connecting plate moves obliquely downward, so that the distance between the splint and the installation block is increased during expansion, providing expansion space for the rail, and the distance between the splint and the installation block is reduced during contraction, so that it remains clamped The tight state improves the safety of the track.

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 proposed an automatic adjustment device for thermal expansion and cold contraction of railway fasteners to solve the problem

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