A shoulder damping fasten

A shock-absorbing fastener and shoulder-type technology, which is applied in the field of rail transit, can solve the problems of reducing the life of anchor bolts, adverse effects on safety and stability, and increasing the length of anchor bolts, so as to avoid the action of transverse shear force and reduce the impact The risk of shearing, the effect of reducing the height of the tunnel section

Pending Publication Date: 2018-12-11
洛阳科博思新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These two layers of metal backing plates are the two most expensive components in the entire fastener system, accounting for more than 70% of the overall cost. Compared with the single-layer metal backing plate of ordinary fasteners, an additional layer of metal backing plate is added. substantial increase in cost
[0008] 2. The anchor bolts are long and prone to shear deformation, posing potential safety hazards
[0009] Compared with the anchor bolts of ordinary single-layer backing plate fasteners, which only need to pass through one layer of backing plate and one layer of elastic body, the anchor bolts in the above-mentioned double-layer fasteners need to press the upper iron plate, middle elastic body, and lower iron plate simultaneously. Tightly on the foundation of the ballast bed, the entire anchor bolt runs through the upper iron plate, the middle elastic body, and the lower iron plate, which directly causes the length of the anchor bolt to increase
When the train is running, the lateral force applied to the rail is transmitted to the anchor bolts. Since the anchor bolts protrude from the foundation of the ballast bed relatively too long, the shear moment generated by the lateral force will be greater, and the anchor bolts will undergo greater shear deformation. , greatly reducing the life of the anchor bolts, causing hidden dangers in safe driving
[0010] 3. Compared with ordinary fasteners, the installation height of existing rails is higher
[0011] Since there are two layers of metal backing plates in the prior art, compared with the single-layer metal backing plate of ordinary fasteners, the height of the fasteners in the prior art is higher, usually more than 14mm higher, resulting in the height of the rail bottom to the sleeper surface. high
The installation height of the rail is high. On the one hand, the section height of the subway tunnel is required to increase, thereby increasing the construction cost of the tunnel; on the other hand, the higher the height of the rail to the sleeper surface, the worse the lateral stability of the rail, which will affect the safety of the entire system. adversely affect the stability of the

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] Such as figure 2 As shown, the embodiment of the present invention provides a shoulder-type vibration damping fastener, which includes a backing plate 2, an anchor bolt 5, a spring bar 6, a spring bar seat, and a gauge block. The backing plate 2 is provided with a through hole 22, The anchor bolt 5 penetrates the through hole 22 of the backing plate 2 and fixes the backing plate 2 to the track foundation 3; at least two spring bar seats are provided on the upper surface of the backing plate 2, and one end of the spring bar 6 is set on the spring bar seat On the top, the other end of the elastic strip 6 presses the gauge block.

[0073] Preferably, the above-mentioned backing plate 2 is provided with a limit stop shoulder for limiting the lateral displacement between the backing plate 2 and the track foundation 3, and the limit stop shoulder is matedly connected with a groove provided on the track foundation 3.

[0074] Combine image 3 , Figure 4 As shown, in this embodime...

Embodiment 2

[0095] The shoulder-type vibration damping fastener provided in this embodiment has a main structure similar to that of the first embodiment, and also includes a backing plate 2, an anchor bolt 5, a spring bar 6, a spring bar seat, and a gauge block. The specific structure and Please refer to the record of the first embodiment for the connection relationship between the two. This embodiment aims to illustrate the difference between the two.

[0096] Combine Figure 15 , Figure 16 As shown, in this embodiment, the above-mentioned through hole 22 penetrates the protruding structure 21.

[0097] In the specific operation, the above-mentioned through hole 22 and the convex structure 21 are arranged at the same position on the backing plate, that is, the through hole 22 penetrates the arrangement of the convex structure 21. The above-mentioned preferred setting can effectively reduce the total weight of the backing plate 2; The provision of the hollow through holes of the structure 21 ...

Embodiment 3

[0099] The shoulder-type vibration damping fastener provided by this embodiment has a main structure similar to that of the second embodiment, and also includes a backing plate 2, an anchor bolt 5, a spring bar 6, a spring bar seat, and a gauge block. The specific structure and Please refer to the record of the first embodiment for the connection relationship between the two. This embodiment aims to illustrate the difference between the two.

[0100] Combine Figure 17 , Figure 18 As shown, in this embodiment, the above-mentioned buffer layer 32 and the embedded casing 9 may be an integral structure.

[0101] In the specific operation, the above-mentioned buffer layer 32 and the embedded sleeve 9 can be directly integrally formed, that is, directly formed during the manufacturing process; they can also be connected separately, that is, connected after being separately manufactured; those skilled in the art , The corresponding setting method can be selected according to the actual ...

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PUM

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Abstract

A shoulder damping fastener is disclosed, which comprises a cushion plate and an anchor bolt. A through hole is formed in the cushion plate, the anchor bolt passes through the through hole to fix thecushion plate on the rail foundation; At least two elastic strip seat are arranged on that upper surface of the backing plate; The backing plate is provided with a limiting shoulder for limiting the lateral displacement between the backing plate and the track foundation, and the limiting shoulder is cooperatively connected with a groove arranged on the track foundation. The invention can be applied to the field of rail transit, and the application of the invention can effectively overcome the defects in the prior art, can effectively reduce the overall cost of the fastener and can effectivelyshorten the length of the anchor bolt. Furthermore, the vibration damping technology effect of the double-layer elastomer can be realized.

Description

Technical field [0001] This application relates to, but is not limited to, the field of rail transit, especially a shoulder-type vibration-damping fastener. Background technique [0002] In recent years, with the rapid development of rail transit systems represented by subways and intercity railways, it has effectively alleviated the tension of urban traffic. At the same time, the vibration and noise pollution caused by these transportation methods have also brought people Production and life have brought great troubles. As the connecting part between the rail and the sleeper, the rail fastener has the function of fixing the rail, and its vibration and noise reduction function has also attracted more and more attention. [0003] At present, a series of rail fastener products with vibration and noise reduction functions have been launched on the market; among many vibration-damping fastener products, the detachable double-layer vibration-damping fastener realizes two-layer elastic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01B19/00E01B9/68E01B9/44E01B9/62
CPCE01B9/44E01B9/62E01B9/68E01B19/003
Inventor 潘涛马端人李潇潇柳佳
Owner 洛阳科博思新材料科技有限公司
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