CN112030621A

CN112030621A - Composite iron base plate for stray current prevention track fastener

Info

Publication number: CN112030621A
Application number: CN202011020193.9A
Authority: CN
Inventors: 王红英; 张法明; 李强; 李晓云; 郭俊峰; 陈刚; 蔡研; 杨铁梅
Original assignee: Shaanxi Changmei Science And Technology LLC
Current assignee: Shaanxi Changmei Science And Technology LLC
Priority date: 2020-09-25
Filing date: 2020-09-25
Publication date: 2020-12-04

Abstract

The invention discloses a composite iron base plate for a stray current prevention track fastener, which comprises an iron base plate body, wherein a circle of insulating layer is coated on the periphery of the side edge of the iron base plate body; adopt the iron tie plate of above-mentioned structure, owing to the cladding has the round insulating layer on iron tie plate body side periphery to improve the creepage distance at iron tie plate edge position, improve the insulating nature at iron tie plate edge, even iron tie plate edge can effectively avoid stray current under the rainwash, prevent to form the current return circuit between iron tie plate and the sleeper.

Description

Composite iron base plate for stray current prevention track fastener

Technical Field

The invention relates to the field of rail transit, in particular to an iron base plate in a steel rail component in the rail transit.

Background

At present, the main stressed part of a rail fastener part in rail transit is an iron base plate, and cast iron materials such as QT-450 and the like are usually adopted, and different corrosion prevention treatment modes are carried out on the surface of the iron base plate to prevent rusting. However, the fact is that the subsequent addition of corrosion resistant coatings results in the coating being damaged due to transport, installation, operation (different environment) and the like. In this case, the iron shim plates have different degrees of rust. Often these rusts can be washed by rainwater and make and form the current return circuit between rail and the sleeper, appear phenomenons such as circuit striking sparks, form very big hidden danger to train operation. Therefore, it is necessary to optimize the existing iron shim plate. Not only ensures the bearing capacity, but also can avoid stray current.

Disclosure of Invention

In order to solve the defects in the prior art, the iron tie plate can effectively avoid stray current of the iron tie plate and prevent a current loop from being formed between a steel rail and a sleeper. The technical scheme adopted by the invention is as follows:

the utility model provides a prevent stray current track fastener with compound iron tie plate, includes the iron tie plate body side periphery cladding have a round insulating layer.

Furthermore, the insulating layer is made of rubber, plastic and glass fiber reinforced plastic.

Further, the insulating layer for the silicon rubber pass through the injection cladding at iron tie plate body side periphery be equipped with the mounting groove.

Furthermore, the insulating layer is step-shaped along the thickness direction of the iron base plate body.

Furthermore, the insulating layer rises from top to bottom along the thickness direction of the iron backing plate body step by step.

Furthermore, the insulating layer is gradually reduced from top to bottom along the thickness direction of the iron base plate body.

Furthermore, the insulating layer is gradually reduced from the middle to two sides along the thickness direction of the iron base plate body.

Furthermore, the insulating layers are arranged in a layered mode along the thickness direction of the iron base plate body.

Furthermore, the insulating layer is provided with two layers at least along the thickness direction of the iron base plate body.

Furthermore, the root of each insulating layer is disconnected or connected into a whole, and the end part of each insulating layer is an arc surface.

Adopt the iron tie plate of above-mentioned structure, owing to the cladding has the round insulating layer on iron tie plate body side periphery to improve the creepage distance at iron tie plate edge position, improve the insulating nature at iron tie plate edge, even iron tie plate edge can effectively avoid stray current under the rainwash, prevent to form the current return circuit between iron tie plate and the sleeper.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a partial sectional view of embodiment 1 of the present invention;

FIG. 3 is a partial sectional view of embodiment 2 of the present invention;

FIG. 4 is a partial sectional view of embodiment 3 of the present invention;

FIG. 5 is a partial sectional view of embodiment 4 of the present invention;

FIG. 6 is a partial sectional view of embodiment 5 of the present invention;

FIG. 7 is a partial sectional view of embodiment 6 of the present invention;

FIG. 8 is a partial sectional view of embodiment 7 of the present invention;

FIG. 9 is a partial sectional view of embodiment 8 of the present invention;

Detailed Description

As shown in fig. 1, compound iron tie plate includes iron tie plate body 1, sets up the mount pad a of installation bullet strip on iron tie plate body 1, has round insulating layer 2 in 1 side periphery cladding of iron tie plate body, and this insulating layer 2 can improve the insulating effect at iron tie plate edge, increases creepage distance, even can effectively avoid stray current under the rainwash, prevents to form the return circuit between rail and the sleeper.

This insulating layer 2 need select for use the material that has insulating effect to make, if adopt rubber, plastics or glass steel etc. for making insulating effectual, preferred silicon rubber with its cladding in iron tie plate body 1 side periphery through injection process, improves the cohesion through the couplant between insulating layer 2 and iron tie plate body 1 during the injection.

The structure of the insulating layer 2 and the combination of the insulating layer 2 and the iron pad can have various structural forms, and the following embodiments will be described in detail:

as shown in fig. 2, the insulating layer 2 is directly coated on the periphery of the side edge of the iron backing plate body 1; the contact part of the insulating layer 2 and the iron base plate body 1 is a plane, and the surface of the insulating layer 2, which is positioned on the outer side of the iron base plate, is not structurally changed into the plane.

As shown in figure 3, in order to improve the binding force between the insulating layer 2 and the iron backing plate body 1, the installation groove 3 is arranged on the periphery of the side edge of the iron backing plate body 1, so that the insulating layer 2 is partially embedded into the installation groove 3, the contact area between the insulating layer 2 and the iron backing plate body 1 is improved, and the insulating layer 2 is firmed. The mounting groove 3 is not limited to the standard groove of fig. 2, but may be a stepped mounting groove 3 (which may be considered as a V-groove) of fig. 4 and 5

The following embodiments will be described with emphasis on the change of the structure of the insulating layer 2, as far as the combination between the insulating layer 2 and the iron shim plate body 1 is selected with reference to the forms given in

embodiments

1 and 2.

The cross section of the insulating layer 2 is step-shaped as shown in fig. 4 to 6 (i.e. the insulating layer 2 is step-shaped along the thickness direction of the iron pad body 1), wherein the step can be provided with multiple steps, which is illustrated as a two-step, and the step of the embodiment shown in fig. 4 can be gradually raised from the top (i.e. the end surface of the insulating layer 2 is gradually separated from the iron pad along the thickness direction of the iron pad body 1 from top to bottom); the steps of the embodiment shown in fig. 5 may be gradually reduced from the top (i.e., the insulating layer 2 is gradually close to the iron shim plate from top to bottom along the thickness direction of the iron shim plate body 1); the step of the embodiment shown in fig. 6 may be gradually decreased from the middle to the upper and lower sides (i.e., the end faces of the insulating layer 2 gradually approach the iron shim plate from the middle of the insulating layer 2 to the upper and lower sides in the thickness direction of the iron shim plate body 1).

In the embodiment shown in fig. 7 and 9, the insulating layers 2 are arranged in layers, and the insulating layers 2 are made into insulating sheds similar to insulators, in the arrangement, the insulating layers are generally arranged in at least two layers along the thickness direction of the iron pad body 1; the following embodiment is further described by taking two layers as an example, as shown in fig. 7, the insulating layers 2 are disposed on two sides, and the root portions of the insulating layers 2 (i.e., the connecting portions of the insulating layers 2 and the iron shim plate body 1) are not connected to each other; as shown in fig. 8 and fig. 9, the root of each insulating layer 2 is connected together to the full cladding of 1 side periphery of iron tie plate body, and insulating effect is better to can adopt the form of mounting groove 3 to make the root of insulating layer 2 extend to and improve creepage distance in mounting groove 3 as shown in fig. 9, reach better insulating effect, can set up the cambered surface with the tip of above-mentioned insulating layer 2 simultaneously and make things convenient for impurity such as rainwater to flow.

Claims

1. The utility model provides a prevent stray current track fastener with compound iron tie plate, includes iron tie plate body (1), its characterized in that: the periphery of the side edge of the iron base plate body (1) is coated with a circle of insulating layer (2).

2. The composite iron backing plate for the stray current prevention track fastener according to claim 1, wherein: the insulating layer (2) is made of rubber, plastic and glass fiber reinforced plastic.

3. The composite iron backing plate for the stray current prevention track fastener according to claim 2, wherein: insulating layer (2) for the silicon rubber through the injection cladding in iron backing plate body (1) side periphery be equipped with mounting groove (3).

4. The composite iron backing plate for the stray current prevention track fastener according to any one of claims 1 to 3, wherein: the insulating layer (2) is step-shaped along the thickness direction of the iron base plate body (1).

5. The composite iron backing plate for the stray current prevention track fastener according to claim 4, wherein: the insulating layer (2) is gradually raised from top to bottom along the thickness direction of the iron base plate body (1) and the end face of the insulating layer (2) is gradually raised.

6. The composite iron backing plate for the stray current prevention track fastener according to claim 4, wherein: the insulating layer (2) is gradually reduced from top to bottom along the thickness direction of the iron base plate body (1).

7. The composite iron backing plate for the stray current prevention track fastener according to claim 4, wherein: the insulating layer (2) is gradually reduced from the middle to two sides along the thickness direction of the iron base plate body (1).

8. The composite iron backing plate for the stray current prevention track fastener according to any one of claims 1 to 3, wherein: the insulating layer (2) is arranged in a layered mode along the thickness direction of the iron base plate body (1).

9. The composite iron backing plate for the stray current prevention track fastener according to claim 8, wherein: the insulating layer (2) is at least provided with two layers along the thickness direction of the iron base plate body (1).

10. The composite iron backing plate for the stray current prevention track fastener according to claim 9, wherein: the root parts of the insulating layers (2) are disconnected or connected into a whole, and the end parts of the insulating layers (2) are cambered surfaces.