Rail welding seam glued joint and repairing method

Abstract

The invention discloses a rail welding seam glued joint. The rail welding seam glued joint comprises rail welding seam joint clamp plates, wherein the inclinations of the inner side surfaces of the rail welding seam joint clamp plate are the same as the inclination of the inner side surface of a rail cavity, bolt holes are formed in the rail welding seam joint clamp plates, bolt holes corresponding to the bolt holes formed in the rail welding seam joint clamp plates are formed in a rail, the rail welding seam joint clamp plates are fixedly installed on two sides of the rail through joint bolts and lock nuts, anti-rotation protrusions are arranged on the head portions of the joint bolts, slot holes are formed in the rail welding seam joint clamp plates, the anti-rotation protrusions are adaptive to the slot holes, high strength plain washers are installed between the rail welding seam joint clamp plates and the lock nuts, lock rings are arranged outside the lock nuts, inner cavities of the lock rings are adaptive to outer hexagons of the lock nuts, adaptive pins holes are formed in the lock rings and thread ends of the joint bolts, cotters are configured, and the cotters and the pin holes are clamped together. According to the rail welding seam glued joint, the problem of bolt looseness can be solved, and anti-fatigue performances of the rail welding seam glued joint are improved.

Description

technical field [0001] The invention relates to the field of railway construction, in particular to a rail weld glued joint for rail repair and a repair method. Background technique [0002] Between two fixed-length rails, in order to ensure the continuity of the rails and make them develop into seamless lines and super-long seamless lines, the two rails are usually connected by welding. However, during the welding process or after a period of use, damage will occur in different situations. In the prior art, when the flaw detection inspection finds a damaged rail weld, the repair equipment and methods are as follows, and each has some disadvantages: [0003] 1. Use ordinary bulging splints to repair damaged rails; however, its strength and tensile strength are poor, and it is prone to aggravated weld damage and when the rail welds are broken, the rails will be pulled apart due to insufficient splint strength, which will affect driving safety. Increase the cost of railway m...

AI Technical Summary

Problems solved by technology

[0003] 1. Use ordinary bulging splints to repair damaged rails; however, its strength and tensile strength are poor, and it is prone to aggravated weld damage and when the rail welds are broken, the rails will be pulled apart due to insufficient splint strength, which will affect driving safety. Increase the cost of railway maintenance

[0004] 2. According to the different types of welded joints of the damaged rails, lightness, heavyness and fracture, the forms of full-section bulging splints with no stiffening ribs, double stiffening ribs, thickened and single stiffening ribs are selected respectively; Because it adopts different forms for different situations of damaged rails, it brings inconvenience to the maintenance department, and time is not allowed to purchase repair parts in time when problems are found; and because the splint is divided into 3 forms, more than 3 types must be prepared. repair parts, resulting in increased costs, complicating installation, and increasing inventory management costs

[0005] 3. The above methods do not clearly point out or take into account the phenomenon that the rail weld protrusions are in contact with the splint, resulting in stress concentration, which in turn causes the rail weld fracture

[0006] 4. Because the rail welds will have at least 25 tons of up and down impact force when the train passes, ordinary high-strength bolts will loosen due to frequent impact forces during use, resulting in insufficient fastening force, causing the splint to separate from the rail, affecting Weld reinforcement

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