CN215104307U - Iron base plate lower backing plate for track fastener - Google Patents

Abstract

The utility model discloses an iron base plate lower backing plate for a track fastener, which comprises a bottom plate contacted with the bottom surface of the iron base plate and a side plate coated on the side wall of the iron base plate, wherein the outer side of the side plate is provided with a skirt edge for increasing creepage distance; by adopting the structure, the side plate of the lower padding plate of the iron padding plate covers the edge of the iron padding plate, and the skirt edge is arranged on the side plate, so that the creepage distance of stray current is increased, and the insulation protection of the iron padding plate is better; and the side plates coat the edges of the iron base plate, so that the edges of the iron base plate are prevented from being rusted.

Description

Iron base plate lower backing plate for track fastener

Technical Field

The utility model relates to a track traffic field especially relates to iron backing plate lower bolster plate for track fastener.

Background

At present, in a rail fastener in rail transit, a lower backing plate of an iron backing plate is arranged between the iron backing plate and a concrete sleeper and mainly provides the functions of buffering, vibration reduction, insulation and the like necessary in a rail structure, and the lower backing plate is usually made of rubber or polyester. The iron base plate is usually made of cast iron such as QT-450 and is subjected to different corrosion prevention treatments on the surface thereof to prevent rusting.

But the fact is that the iron pallet causes the coating to be 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. Traditional lower backing plate is not enough to the insulating protection of iron backing plate edge position, causes iron backing plate edge position creepage distance short, can't prevent stray current.

SUMMERY OF THE UTILITY MODEL

In order to solve the not enough among the prior art, provide one kind and can effectively prevent stray current's iron tie plate lower bolster for track fastener, the utility model discloses the technical scheme who adopts is:

the utility model provides a track is iron backing plate lower bolster for fastener, the board lower bolster include with the bottom plate of iron backing plate bottom surface contact and the curb plate of cladding at the iron backing plate lateral wall the curb plate on the outside be equipped with the shirt rim that increases creepage distance.

Further, the side plate is lower than the upper surface of the iron base plate; the skirt is positioned at the top and/or the middle part of the side plate.

Further, the upper surface of the skirt is arranged from the side plate to the edge in a downward inclined mode; the lower surface of the skirt is provided with a convex edge.

Furthermore, grooves are formed in the upper surface and the lower surface of the bottom plate, and through holes for fastening bolts to penetrate through are formed in the bottom plate.

By adopting the structure, the side plate of the lower padding plate of the iron padding plate covers the edge of the iron padding plate, and the skirt edge is arranged on the side plate, so that the creepage distance of stray current is increased, and the insulation protection of the iron padding plate is better; and the side plates coat the edges of the iron base plate, so that the edges of the iron base plate are prevented from being rusted.

Drawings

FIG. 1 is a schematic view of a lower cushion plate structure of an iron cushion plate of the present invention;

FIG. 2 is a schematic view of the assembly structure of the lower cushion plate and the iron cushion plate of the present invention;

fig. 3 is the sectional view of the assembly structure of the lower padding plate and the iron padding plate of the utility model.

Detailed Description

The lower backing plate shown in fig. 1 comprises a bottom plate 1 and side plates 2, the bottom plate 1 and the side plates 2 are integrally formed, after the lower backing plate is assembled with an iron backing plate, the bottom plate 1 is in contact with the bottom surface of the iron backing plate A, the side plates 2 are coated on the side wall of the iron backing plate, the side plates 2 are integrally designed according to the outline of the side wall of the iron backing plate, the side plates 2 are tightly combined with the side wall of the iron backing plate, the side plates 2 and the side wall of the iron backing plate are naturally sealed in actual assembly in a bonding mode and the like, even if rainwater is discharged from the upper surface of the iron backing plate, the side plates 2 are lower than the upper surface of the iron backing plate after the lower backing plate and the iron backing plate are assembled, in order to increase the creepage distance, skirt edges 3 are arranged on the side plates 2, the form similar to an insulator umbrella skirt, and accordingly stray current on the iron backing plate is prevented from entering a sleeper.

Fig. 1 to 3 show a form of only providing one skirt edge, and the skirt edge is disposed at the top of the side plate 2, which is convenient for processing, but may also be disposed at the middle of the side plate 2, and in order to improve the protection effect, the skirt edge 3 may be provided with two skirt edges, which may be disposed at the top and the middle of the side plate 2, respectively.

In order to avoid the rainwater to flow along the edge of the side plate 2 to conduct the loop, the lower surface of the skirt is provided with the convex edge 4 as shown in fig. 3, when the rainwater flows to the convex edge 4, the rainwater directly drops, the rainwater cannot continuously flow along the side plate, and the anti-stray effect is improved. Naturally, in order to make the rainwater flow smoothly, the skirt 3 is inclined downward from the side of the side plate 2 to the edge, so that the rainwater can flow smoothly from the root of the skirt 3 to the edge.

For improving the elasticity of the lower backing plate and reducing the rigidity, grooves 5 are arranged on the upper surface and the lower surface of the bottom plate 1, and through holes 6 for the fastening bolts to pass through are further formed in the bottom plate 1 for the fastening bolts to be connected with the sleepers for conveniently compressing the elastic strips.

Claims (4)

1. The utility model provides a track is iron tie plate lower bolster for fastener which characterized in that: the lower plate backing plate comprises a bottom plate (1) in contact with the bottom surface of the iron backing plate and a side plate (2) coated on the side wall of the iron backing plate, and the outer side of the side plate (2) is provided with a skirt edge (3) for increasing creepage distance.

2. The iron backing plate lower backing plate for the track fastener according to claim 1, characterized in that: the side plate (2) is lower than the upper surface of the iron base plate; the skirt (3) is positioned at the top and/or the middle part of the side plate (2).

3. The iron pad lower pad for a rail clip according to claim 1 or 2, wherein: the upper surface of the skirt (3) is arranged from the side plate (2) to the edge in a downward inclined way; the lower surface of the skirt edge (3) is provided with a convex edge (4).

4. The iron backing plate lower backing plate for the track fastener according to claim 1, characterized in that: grooves (5) are formed in the upper surface and the lower surface of the bottom plate (1), and through holes (6) for fastening bolts to penetrate through are formed in the bottom plate (1).

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