Combined sleeper

Abstract

The invention discloses a combined sleeper. The combined sleeper comprises a sleeper body and a rail bearing plate, a rail bearing groove is formed in the upper surface of the sleeper body, and the rail bearing plate is arranged in the rail bearing groove; a buckle part fixing hole extending in the vertical direction is formed in the rail bearing plate. The combined sleeper has the advantages that through adjustment of the number of layers and the thickness of middle plate bodies of the rail bearing plate, the height of the sleeper can be flexibly adjusted, and maintenance is convenient; through selection of the rail bearing plate of different materials, the stiffness of the rail bearing plate can be flexibly adjusted based on needs, and thus the integral stiffness of a rail structure is adjusted.

Description

technical field [0001] The invention belongs to the field of rail transportation, and in particular relates to a combined sleeper. Background technique [0002] The track slab is an important part of the ballastless track structure. Such as Figure 5 , 6 As shown, the traditional track slab 15 is arranged with different numbers of rail-supporting platforms 13, and the rails 14 are fixed on the rail-supporting platforms 13 by fasteners; although the ballastless track structure in the prior art has good track stability, The geometric shape can be maintained permanently and the maintenance workload of the line is significantly reduced, but it still has the following disadvantages: [0003] (1) It is difficult to adjust the geometric shape of the track. In the prior art, the prefabricated rail bearing platform 13 is usually pre-buried on the upper surface of the track slab 15. During the pouring process of the track slab 15, the position of the rail bearing platform 13 will be...

AI Technical Summary

Problems solved by technology

[0003] (1) It is difficult to adjust the geometric shape of the track. In the prior art, the prefabricated rail bearing platform 13 is usually pre-buried on the upper surface of the track slab 15. During the pouring process of the track slab 15, the position of the rail bearing platform 13 will be disturbed. The rail support platform 13 is a prefabricated component, and its position error cannot be adjusted, so the position error of the rail support platform 13 will cause the geometric shape of the track to be unable to be adjusted;

[0004] (2) The elasticity of the rail support 13 is poor, which makes the rail support 13 unable to absorb the vibration generated by the collision between the rail 14 and the wheel

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