CN212171986U - Expansion joint - Google Patents
Expansion joint Download PDFInfo
- Publication number
- CN212171986U CN212171986U CN201922475838.7U CN201922475838U CN212171986U CN 212171986 U CN212171986 U CN 212171986U CN 201922475838 U CN201922475838 U CN 201922475838U CN 212171986 U CN212171986 U CN 212171986U
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- CN
- China
- Prior art keywords
- contact rail
- contact
- connecting square
- square column
- expansion joint
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Abstract
The utility model discloses an expansion joint, which comprises a soft copper strip, a first contact rail connecting square column, a second contact rail connecting square column, a third contact rail connecting square column, a first fishtail plate, a second fishtail plate, a first contact rail, a second contact rail and a third contact rail, wherein the soft copper strip is connected with the top end of the three contact rail connecting square column; the most important is to meet the performance and reliability requirements of the subway power supply system.
Description
Technical Field
The utility model relates to a connect, especially relate to an expansion joint.
Background
With the rapid development of society, various forms of rail transit are more and more popular. The subway can avoid the ground congestion of cities and fully utilize space, and has large transportation volume and high speed, thereby being widely applied.
The adoption of the composite contact rail to provide electric energy for the locomotive is an important urban rail transit power supply mode. The composite contact rail power supply system is increasingly adopted in subway lines, the subway bears a busy passenger transportation task, the power supply system is required to have extremely high reliability, the expansion joint is used as an important component, the performance is required to be stable, and the existing composite contact rail has the defects that the existing composite contact rail cannot be well adapted to expansion caused by heat and contraction caused by cold of a power supply line, the structure is complex, the installation and maintenance are inconvenient, the performance is unstable, and the like.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: the utility model aims at providing an expansion joint for buffering power supply line expend with heat and contract with cold, installation easy maintenance, simple structure, firm reliable.
The technical scheme is as follows: the expansion joint of the utility model comprises a soft copper strip, a first contact rail connecting square column, a second contact rail connecting square column, a third contact rail connecting square column and a first fishplate, the copper strip current connector comprises a second fishplate, a first contact rail, a second contact rail and a third contact rail, wherein the left part of a soft copper strip is connected with the top end of a first contact rail connection square column, the middle part of the soft copper strip is connected with the top end of a second contact rail connection square column, the right part of a copper strip current connector is connected with the top end of a third contact connection square column, the first contact rail connection square column is connected with the first contact rail, the second contact rail connection square column is connected with the second contact rail, the third contact rail connection square column is connected with the third contact rail connection square column, the first contact rail, the second contact rail and the third contact rail are sequentially arranged on a straight line from left to right, and a first fishplate and a second fishplate are arranged at the groove punishment of the two sides of the three contact rails.
Furthermore, two ends of the two fishplates are connected with the first contact rail and the third contact rail through bolts, waist-shaped holes are formed in the middle parts of the first contact rail and the third contact rail, and the bolts penetrate through the waist-shaped holes.
Further, two fishplates pass through the bolt and are connected with the second contact rail, and second contact rail middle part is equipped with the circular port, and the bolt passes the circular port.
Further, the soft copper belt is connected with the top ends of the three contact rail connecting square columns through bolts.
Further, the three contact rails are steel-aluminum contact rails.
Furthermore, the three contact rail connecting square columns are connected with the three contact rails through welding respectively.
Further, the soft copper strip is mounted with a downward bend.
Has the advantages that: compared with the prior art, the utility model has the advantages of it is as follows showing: the expansion joint of the utility model is designed mainly aiming at the requirement of a power supply system requiring high reliability of a subway, is an important component in a steel-aluminum composite rail power supply system, and is used for buffering the adverse effect of expansion with heat and contraction with cold on a power supply line between two anchor sections of the power supply system; the soft copper belt is convenient to install and maintain and is not easy to be damaged in operation; simple structure, firmness and reliability.
Drawings
Fig. 1 is a front view of an expansion joint of the present invention;
figure 2 is a top view of the expansion joint of the present invention;
fig. 3 is a cross-sectional view of a section F of the expansion joint of the present invention;
fig. 4 is a cross-sectional view of the expansion joint E of the present invention.
Detailed Description
The technical solution of the present invention will be further explained with reference to the accompanying drawings.
As shown in figures 1-4, the expansion joint of the present invention comprises a soft copper strip 1, a first square contact rail connecting column 2, a second square contact rail connecting column 3, a third square contact rail connecting column 4, a first fishplate 5, a second fishplate 6, a first contact rail 7, a second contact rail 8 and a third contact rail 9, wherein the left part of the soft copper strip 1 is connected with the top end of the first square contact rail connecting column 2, the middle part of the soft copper strip 1 is connected with the top end of the second square contact rail connecting column 3, the right part of the copper strip current connector 1 is connected with the top end of the third square contact rail connecting column 4, the first square contact rail connecting column 2 is connected with the first contact rail 7, the second square contact rail connecting column 3 is connected with the second contact rail 8, the third square contact rail connecting column 4 is connected with the third square contact rail 9, the first contact rail 7, the second contact rail 8 and the third contact rail 9 are arranged on a straight line in sequence from left to right, the grooves on the two sides of the three contact rails are provided with a first fishplate 5 and a second fishplate 6. Two fishplates both ends are connected with first conductor rail 7 and third conductor rail 9 through the bolt, and first conductor rail 7 and third conductor rail 9 middle part are equipped with waist shape hole, and the bolt passes waist shape hole. Two fishplates pass through the bolt and are connected with second conductor rail 8, and 8 middle parts of second conductor rail are equipped with the circular port, and the bolt passes the circular port. The soft copper strip 1 is connected with the top ends of the three contact rail connecting square columns through bolts. The three contact rails are steel-aluminum contact rails. The three contact rail connecting square columns are connected with the three contact rails through welding respectively. The soft copper strip 1 is mounted by bending downwards.
The soft copper strip 1 is always positioned in a space clamped by the three contact rail connecting columns and plays a role in connecting current. Because the middle parts of the first contact rail 7 and the third contact rail 9 are provided with the waist-shaped holes, when the power supply line expands with heat and contracts with cold, the first contact rail 7 and the third contact rail 9 can slide left and right to realize the buffering of the thermal barrier and the contraction of the power supply line. Two fishplates are arranged in grooves on two sides of the three contact rails, play a role in keeping the three contact rails on a straight line and prevent the contact rails from deviating from the original positions in the process of expansion with heat and contraction with cold.
Claims (7)
1. An expansion joint, characterized by: comprises a soft copper strip (1), a first contact rail connecting square column (2), a second contact rail connecting square column (3), a third contact rail connecting square column (4), a first fishplate (5), a second fishplate (6), a first contact rail (7), a second contact rail (8) and a third contact rail (9), wherein the left part of the soft copper strip (1) is connected with the top end of the first contact rail connecting square column (2), the middle part of the soft copper strip (1) is connected with the top end of the second contact rail connecting square column (3), the right part of the soft copper strip (1) is connected with the top end of the third contact rail connecting square column (4), the first contact rail connecting square column (2) is connected with the first contact rail (7), the second contact rail connecting square column (3) is connected with the second contact rail (8), and the third contact rail connecting square column (4) is connected with the third contact rail (9), the first contact rail (7), the second contact rail (8) and the third contact rail (9) are sequentially arranged on a straight line from left to right, and a first fishplate (5) and a second fishplate (6) are arranged at the positions of grooves on two sides of the three contact rails.
2. The expansion joint according to claim 1, wherein: two fishplates both ends are connected with first conductor rail (7) and third conductor rail (9) through the bolt, first conductor rail (7) and third conductor rail (9) middle part are equipped with waist shape hole, the bolt passes waist shape hole.
3. The expansion joint according to claim 1, wherein: the two fishplates are connected with a second contact rail (8) through bolts, a circular hole is formed in the middle of the second contact rail (8), and the bolts penetrate through the circular hole.
4. The expansion joint according to claim 1, wherein: the soft copper strip (1) is connected with the top ends of the three contact rail connecting square columns through bolts.
5. The expansion joint according to claim 1, wherein: the three contact rails are steel-aluminum contact rails.
6. The expansion joint according to claim 1, wherein: the three contact rail connecting square columns are connected with the three contact rails through welding respectively.
7. The expansion joint according to claim 1, wherein: the soft copper strip (1) is installed by bending downwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922475838.7U CN212171986U (en) | 2019-12-31 | 2019-12-31 | Expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922475838.7U CN212171986U (en) | 2019-12-31 | 2019-12-31 | Expansion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212171986U true CN212171986U (en) | 2020-12-18 |
Family
ID=73762769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922475838.7U Active CN212171986U (en) | 2019-12-31 | 2019-12-31 | Expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212171986U (en) |
-
2019
- 2019-12-31 CN CN201922475838.7U patent/CN212171986U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 211100 No. 719, Sheng'an Avenue, Binjiang Development Zone, Jiangning District, Nanjing, Jiangsu Province Patentee after: Nanjing Wuhua Electrical Equipment Co.,Ltd. Address before: No. 719 Sheng'an Avenue, Binjiang Development Zone, Jiangning District, Nanjing City, Jiangsu Province, 211178 Patentee before: NANJING JINCHENG RAIL TRANSPORT EQUIPMENT Co.,Ltd. |
|
| CP03 | Change of name, title or address |