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Composite sleeper

A technology of composite materials and sleepers, which is applied in the field of rail transit, can solve the problems of reducing the effect of foam base material on shock absorption and noise reduction, increasing the vibration and wear of rails, wheels, and unsatisfactory shear resistance, etc., so as to reduce wave wear , Improve the service life and ensure the effect of service life

Active Publication Date: 2021-06-04
洛阳双瑞橡塑科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the method of using non-foaming resin to form a protective layer can increase the wear resistance of the material, it also reduces the effect of the foam base material on shock absorption and noise reduction, and increases the vibration and wear of rails and wheels.
On the other hand, the strength, fatigue resistance, bolt pullout strength, bolt relaxation resistance and shear resistance of sleepers do not meet the requirements of heavy-duty railways and railway bridges.

Method used

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  • Composite sleeper
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Such as figure 1 As shown, this embodiment provides a composite sleeper comprising a shell and a concrete core 1, the shell is made of composite material, the shell includes an upper shell 2 and a lower shell 3, the lower shell The body 3 is arranged as a trough structure, and the concrete core 1 is accommodated inside the lower shell 3 . The concrete core body 1 increases the dead weight of the sleeper, avoiding insufficient resistance due to small dead weight, and finally improves the stability of the railway system. When a train passes the rail on the upper part of the sleeper, a greater vibration force will be generated, and the upper shell of the sleeper can relieve the vibration force transmitted from the rail and increase the service life of the sleeper. And compared with conventional concrete sleepers, the arrangement of the shell can effectively reduce the noise generated when the train passes the rails.

[0036] The length, width and height of the concrete c...

Embodiment 2

[0045] Further, in order to increase the connection stability of the upper shell 2, the concrete pillow core 1 and the lower shell 3 in the synthetic sleeper, this embodiment sets a clip 4 outside the synthetic sleeper on the basis of the embodiment 1, for The upper shell 2, the concrete pillow core 1 and the lower shell 3 are fixed.

[0046] The clamp 4 includes a pair of elastic sheets 41, which are arranged oppositely. The upper ends of the two elastic sheets 41 are connected and fixed by locking bolts. The lower end of the shrapnel is fixed on the ballast bed through a connecting piece. The elastic piece is arranged in a curved structure, and the elastic piece is buckled with the top of the upper casing, the side wall of the lower casing and the ballast bed, thereby fixing and clamping the upper casing, the lower casing and the concrete core inside the casing.

[0047] In the sleeper made of composite material provided in this embodiment, clips are installed on the outsid...

Embodiment 3

[0049] In this embodiment, on the basis of Embodiment 1, the vibration damping effect of the concrete core is further improved. Specifically, a damping element 14 is disposed inside the concrete core 1 , and the damping element 14 is disposed at a position corresponding to the lower part of the rail bearing groove 22 . Specifically, a cavity 15 is provided inside the concrete core 1 corresponding to the position of the rail bearing groove 22, and discrete particles 17 are added inside the cavity 15, and an opening 16 is provided on the top side of the cavity 15 to facilitate adding or taking out discrete particles. particles17. During the vibration process of the rail, the vibration is transmitted to the sleeper, and the sleeper drives the cavity 15 and the discrete particles 17 to move, and a large number of discrete particles impact and rub against each other, dissipating the vibration energy of the rail, thereby reducing the vibration of the rail. And the absorption freque...

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Abstract

The invention provides a composite material composite sleeper, which comprises a shell and a concrete core, and the shell is made of composite materials, and is characterized in that the shell includes an upper shell and a lower shell, and the lower shell It is arranged as a groove-like structure, grooves are arranged inside the lower shell, convex ribs are arranged on the outer surface of the core, and a concrete core is installed inside the lower shell. According to the present invention, the shell is made of elastic composite material, and the core is made of concrete material, which effectively absorbs the vibration energy of the rail, reduces wave wear, and achieves a good vibration and noise reduction effect. And when the shell of the sleeper is damaged, only the upper shell or the lower shell needs to be replaced, which is convenient for replacement and saves cost. In addition, in this embodiment, a protective layer is provided on the lower surface of the lower shell of the sleeper to improve the overall service life of the shell and the sleeper. Improve the stability of the track structure.

Description

technical field [0001] The invention relates to the technical field of rail transportation, in particular to a sleeper made of composite materials. Background technique [0002] The sleepers used in railway lines are mainly wooden sleepers and prestressed reinforced concrete sleepers at present. Known wooden sleeper is widely used in special sections such as bridges and turnouts because it has good elasticity, is easy to process, and is easy to use. However, due to the reason of material selection, the strength and durability of the wooden sleeper are not uniform enough, which will increase the dynamic effect of the wheel and rail, making the service life of the wooden sleeper short. In addition, high-quality wood resources are relatively scarce, and they are increasingly not meeting the requirements of environmental protection and ecological protection. Known prestressed reinforced concrete sleepers are widely used in railway tracks because they are rich in raw materials,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01B3/46
CPCE01B3/46
Inventor 张用兵杨巧云米垚曾飞
Owner 洛阳双瑞橡塑科技有限公司
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