CN212073767U

CN212073767U - Composite rail expansion joint

Info

Publication number: CN212073767U
Application number: CN201922473417.0U
Authority: CN
Inventors: 朱晓勇; 张娴; 谢德海; 金勇�; 哈义杰; 钟斌; 尹强强
Original assignee: Nanjing Jincheng Rail Transport Equipment Co ltd
Current assignee: Nanjing Wuhua Electrical Equipment Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-12-04
Anticipated expiration: 2029-12-31

Abstract

The utility model discloses a composite rail expansion joint, which is arranged in a groove at the joint of a composite rail and comprises a copper strip, wherein the copper strip is annular and consists of a straight edge and a semicircular edge, and the straight edge is divided into a connecting part and a non-connecting part; the inner surface of the connecting part is provided with a first fixed block which connects the connecting part with the track; the connecting part, the non-connecting part, the semicircular edge and the first fixing block are symmetrically arranged relative to the seam of the composite rail; a certain gap is formed between the copper strip and the track. The utility model can solve the problem of expansion with heat and contraction with cold of the single-rail power supply line, achieve the dustproof and antifouling requirements, improve the structural reliability and reduce the occupied space of the joint; the structure design is reasonable, the production process is simple and convenient, the installation and the maintenance are convenient, and the performance is stable.

Description

Composite rail expansion joint

Technical Field

The utility model relates to an expansion joint especially relates to a compound rail expansion joint.

Background

With the rapid development of society, various forms of rail transit are more and more popular. Because the straddle type monorail has the advantages of less investment, short period, intelligence, environmental protection, strong applicability and small occupied area, compared with the subway, the straddle type monorail has the advantages that the construction period is only half of that of the subway, and the manufacturing cost is only one third of that of the subway, so the straddle type monorail is widely applied. The steel-aluminum composite contact rail is used for providing electric energy for the locomotive, and is an important urban rail transit power supply mode, the existing expansion joint is not suitable for the composite rail, and a new expansion joint needs to be developed for the straddle type composite rail independently so as to adapt to the problem of expansion caused by heat and contraction caused by cold of the composite rail.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the utility model aims at providing an expansion joint of intensity height, simple structure to solve above-mentioned problem.

The technical scheme is as follows: the composite rail expansion joint of the utility model is arranged in a groove at the joint of the composite rail, and comprises a soft copper strip, wherein the soft copper strip is annular and consists of two straight edges and two semicircular edges, and each straight edge is divided into a connecting part and a non-connecting part; the inner surfaces of the connecting parts are provided with first fixing blocks, and the fixing blocks are used for connecting the connecting parts with the rails; the connecting part, the non-connecting part, the semicircular edge and the first fixing block are symmetrically arranged relative to the seam of the composite rail; and a certain gap is formed between the copper strip and the track.

The outer surface of the connecting part is provided with a second fixing block, and the second connecting block is fixedly connected with the copper strip connecting part.

And a third fixing block is arranged between the first fixing block and the copper strip, and a bolt is arranged on the fixing block to connect the soft copper strip and the second fixing block.

The length of the joint of the third fixed block and the second fixed block does not exceed the length of the connecting part of the copper strip.

The joint comprises a fishplate which is arranged on the side surface of the track, one end of the fishplate extends into the track, and the other end of the fishplate is arranged on the surface of the track; the width of the inner end and the outer end of the fishplate is larger than the width of the seam.

Has the advantages that: compared with the prior art, the utility model has the advantages of it is as follows showing: the utility model can solve the problem of expansion with heat and contraction with cold of the single-rail power supply line, achieve the dustproof and antifouling requirements, improve the structural reliability and reduce the occupied space of the joint; the structure design is reasonable, the production process is simple and convenient, the installation and the maintenance are convenient, and the performance is stable.

Drawings

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

fig. 2 is a schematic view of the structure of the present invention when the track is deformed.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings.

The utility model discloses a compound rail expansion joint installs in the recess of 3 seams 8 departments of compound rail, and this compound rail 3 is two segmentations, and seam 8 has certain contained angle with track place straight line. Under the combined action of ambient temperature and heat dissipated by line transmission, the composite rail 3 expands with heat and contracts with cold, and the expansion joint can solve the problems.

As shown in fig. 1, the utility model comprises a soft copper strip 1, a first fixed block 4, a second fixed block 2, a fishplate 7 and a third fixed block 8. The flexible copper strip 1 is annular and is composed of two straight sides and two semicircular sides 103, and each straight side is divided into a connecting part 101 and a non-connecting part 102. The inner surface of the connecting part 101 is provided with a first fixing block 4 which fixedly connects the connecting part with the track, and a certain gap is arranged between the soft copper belt and the track. When the composite rail expands with heat and contracts with cold, the left and right rails move outwards respectively, the seam 8 is separated, the connecting part connected with the first fixing block 4 does not deform, and the non-connecting part and the semicircular edge deform under the traction of the rails, as shown in fig. 2. The utility model discloses a joint shape is closed, the transmission electric energy of being convenient for, simultaneously, around warping, annular total length is unchangeable, satisfies the little requirement of installation space.

The connecting portion 101, the non-connecting portion 102, and the semicircular edge 103 are symmetrically disposed about the joint of the composite rail. An upper first fixing block 401 is arranged on the inner side of the connecting portion of the upper straight edge, and a lower first fixing block 402 is arranged on the inner side of the connecting portion of the lower straight edge. The upper first fixing block 401 and the lower first fixing block 402 are symmetrically disposed about a joint of the composite rail. The outer side of the soft copper strip 1 is also provided with a second fixed block 2 which is divided into an upper second fixed block 201 and a lower second fixed block 202. A third fixed block 5 is also arranged between the soft copper strip 1 and the first fixed block 4. The third fixing block 5 and the second fixing block 2 are connected with the soft copper belt through bolts, and the length of the joint does not exceed the length of the connecting part of the soft copper belt. The third fixing block 5 and the second fixing block 2 fix the soft copper belt.

Claims

1. The composite rail expansion joint is characterized by being arranged in a groove at a joint of a composite rail (3), and comprising a soft copper strip (1), wherein the soft copper strip (1) is annular and consists of two straight edges and two semicircular edges (103), and each straight edge is divided into a connecting part (101) and a non-connecting part (102); the inner surfaces of the connecting parts (101) are provided with first fixing blocks (4), and the fixing blocks are used for connecting the connecting parts with the rails; the connecting part (101), the non-connecting part (102), the semicircular edge (103) and the first fixing block (4) are symmetrically arranged relative to a seam (8) of the composite rail (3); a certain gap is formed between the soft copper strip (1) and the track.

2. The composite rail expansion joint according to claim 1, wherein the outer surface of the connecting part (101) is provided with a second fixing block (2), and the second connecting block is fixedly connected with the copper strip connecting part (101).

3. The composite rail expansion joint according to claim 2, wherein a third fixing block (5) is arranged between the first fixing block (4) and the flexible copper strip (1), and a bolt is arranged on the third fixing block to connect the flexible copper strip and the second fixing block.

4. The composite rail expansion joint according to claim 3, characterized in that the length of the joint of the third fixing block (5) and the second fixing block (2) does not exceed the length of the joint of the flexible copper strip (1).

5. The composite rail expansion joint according to claim 1, wherein the joint comprises a fishplate (7) arranged at the side of the rail, one end extending into the interior of the rail and the other end at the surface of the rail.

6. Composite rail expansion joint according to claim 5, characterized in that the fishplate (7) has an inner and outer end width greater than the seam width.