CN213619459U - Backflow rail connecting structure - Google Patents
Backflow rail connecting structure Download PDFInfo
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- CN213619459U CN213619459U CN202022173664.1U CN202022173664U CN213619459U CN 213619459 U CN213619459 U CN 213619459U CN 202022173664 U CN202022173664 U CN 202022173664U CN 213619459 U CN213619459 U CN 213619459U
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- return rail
- rail
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- hole
- connection structure
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Abstract
The utility model relates to a rail transit technical field discloses a return current rail connection structure, including: a first return rail and a second return rail in butt joint with the first return rail; one sides of the first return rail and the second return rail are provided with first grooves, and the other sides of the first return rail and the second return rail are provided with second grooves; the connecting device is used for connecting the first return rail and the second return rail and comprises a plurality of fastening components and two connecting pieces; the two connecting pieces are respectively arranged in the first groove and the second groove and are positioned between the first return rail and the second return rail; the fastening assembly is connected between the first return rail and the connector, and/or between the second return rail and the connector. The utility model has the advantages that the reflux rail can meet the reflux requirement of the DC1500 volt traction power supply system, and safely, reliably and continuously meet the reflux of the running train; the structure is connected reliably, and stability is high.
Description
Technical Field
The utility model relates to a rail transit technical field especially relates to a backward flow rail connection structure.
Background
The return rail is a metal conductive rail for returning traction current to a negative electrode of a traction substation, the return rail is generally arranged near the rail, and the rail is laid in a long distance, so that the general return rail is long in arrangement distance, the long-distance return rail needs to be manufactured in a segmented mode, and then multiple sections of return rails are installed in a butt joint mode to form the whole return rail system. The butt joint of the return rails directly influences the construction efficiency of the return rails, and the connection strength between the sectional return rails directly influences the service life of a return rail system.
Most of the existing backflow rails are connected by welding, bolts and nuts, but the conventional connecting structure has the defects that the structure is complex and the construction efficiency is influenced, or the connecting structure is simple and the structural strength is poor, so that the service life of a backflow rail system is influenced.
SUMMERY OF THE UTILITY MODEL
The above-mentioned not enough to prior art exists, the utility model aims to solve the technical problem that a simple structure and connect reliable, the high return rail connection structure of stability are proposed.
The utility model provides a technical scheme that its technical problem adopted is, provides a return current rail connection structure, including:
a first return rail and a second return rail in butt joint with the first return rail; one sides of the first return rail and the second return rail are provided with first grooves, and the other sides of the first return rail and the second return rail are provided with second grooves;
the connecting device is used for connecting the first return rail and the second return rail and comprises a plurality of fastening components and two connecting pieces; the two connecting pieces are respectively arranged in the first groove and the second groove and are positioned between the first return rail and the second return rail; the fastening assembly is connected between the first return rail and the connector, and/or between the second return rail and the connector.
Furthermore, the connecting piece is provided with a plurality of first through holes along the length direction of the connecting piece; the first return rail is provided with a second through hole, and the second return rail is provided with a third through hole; the fastening assemblies are arranged in the first through hole, the second through hole and the third through hole.
Furthermore, the two connecting pieces are symmetrically arranged on two sides of the first return rail and the second return rail.
Further, the fastening assembly comprises a bolt and a nut;
the bolt sequentially penetrates through a first through hole and a second through hole in one connecting piece and a first through hole in the other connecting piece to be connected with the nut; or the bolt sequentially passes through the first through hole and the third through hole on one connecting piece and the first through hole on the other connecting piece to be connected with the nut.
Furthermore, the fastening assembly further comprises a plurality of washers which are sleeved on the bolts.
Furthermore, the upper end and the lower end of each of the first groove and the second groove are provided with a guide inclined plane; the upper end and the lower end of the connecting piece are respectively provided with an inclined wall corresponding to the guide inclined plane, and the inclined wall is attached to the guide inclined plane.
Further, the cross sections of the first return rail and the second return rail are both arranged in an I shape; the cross section of the connecting piece is in an isosceles trapezoid shape.
Further, the air conditioner also comprises an insert which is arranged on the first return rail and/or the second return rail; the top of the first backflow rail and the top of the second backflow rail are symmetrically provided with two clamping grooves, and two ends of the insert are respectively clamped in the two clamping grooves.
Furthermore, the insert is made of stainless steel.
Compared with the prior art, the utility model discloses following beneficial effect has at least:
the utility model discloses in, the both sides of first backward flow rail and second backward flow rail are equipped with first recess and second recess respectively, after first backward flow rail and second backward flow rail parallel and level butt joint, through set up the connecting piece in first recess and second recess, the rethread bolt, nut and packing ring are fixed with first backward flow rail and second backward flow rail, the change of maximum reduction backward flow rail, two upper and lower skew walls of connecting piece support the top on the direction inclined plane of first backward flow rail and second backward flow rail, bolt and nut are taut with two connecting pieces of both sides, guarantee that first backward flow rail and second backward flow rail are connected, it is fixed reliable, connection structure's joint strength is high. The first return rail body and the second return rail body are mainly made of aluminum alloy, stainless steel inserts are arranged at the tops of the first return rail body and the second return rail body, and the stainless steel inserts are embedded into the return rail bodies, so that the structural strength of the return rails can be improved; and both form steel aluminium composite rail form, bear the main part as the backward flow, both improved the structural strength of backward flow rail itself, had the backward flow effect that has promoted, and the backward flow rail mounting structure of this structure can be used for the backward flow, can be used for the induced flow again, and application range is wide.
Drawings
Fig. 1 is a front view of a return rail connection structure of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a cross-sectional view of the first/second return rail with the connecting device and insert assembled;
FIG. 4 is a cross-sectional view of the first/second return rail and insert;
fig. 5 is a cross-sectional view of the connector.
In the figure, the position of the upper end of the main shaft,
1. a first return track; 120. a first groove; 121. a second groove; 122. a card slot; 123. a guide slope;
2. a second return rail;
3. a connecting device; 30. a fastening assembly; 301. a bolt; 302. a nut; 303. a gasket; 31. a connecting member; 311. a first through hole; 312. a sloped wall;
4. an insert.
Detailed Description
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
As shown in fig. 1 to 5, a return rail connection structure includes: a first return rail 1, a second return rail 2, a connecting device 3 and an insert 4. The first return rail 1 and the second return rail 2 are butted with the first return rail 1; a first groove 120 is formed in one side of each of the first return rail 1 and the second return rail 2, and a second groove 121 is formed in the other side of each of the first return rail 1 and the second return rail 2; specifically, the cross sections of the first return rail 1 and the second return rail 2 are both in an i-shaped configuration, the first return rail 1 and the second return rail 2 have the same structure, and because the first return rail 1 and the second return rail 2 are in an i-shaped configuration, the first groove 120 and the second groove 121 in the present embodiment are naturally formed on both sides of the first return rail and the second return rail, and no additional processing is required.
The connecting device 3 is used for connecting the first return rail 1 and the second return rail 2 and comprises a plurality of fastening assemblies 30 and two connecting pieces 31; wherein, the two connecting pieces 31 are respectively arranged in the first groove 120 and the second groove 121, and are both located between the first return rail 1 and the second return rail 2; the fastening assembly 30 is connected between the first return rail 1 and the connecting member 31, and/or between the second return rail 2 and the connecting member 31, that is, the two connecting members 31 span between the first return rail 1 and the second return rail 2, and the connecting member 31, the first return rail 1 and the second return rail 2 are fixed by the bolt 301, the nut 302 and the washer 303, so as to realize the butt joint of the first return rail 1 and the second return rail 2.
Wherein, the cross section of the connecting piece 31 is in an isosceles trapezoid shape. The upper end and the lower end of the first groove 120 and the second groove 121 are both provided with a guide inclined plane 123; the upper end and the lower end of the connecting piece 31 are respectively provided with an inclined wall 312 corresponding to the guide inclined plane 123, and the inclined wall 312 is attached to the guide inclined plane 123.
In the practical use process, after the first return rail 1 and the second return rail 2 are in flush butt joint, the connecting piece 31 is arranged in the first groove 120 and the second groove 121, and then the first return rail 1 and the second return rail 2 are fixed through the bolt 301, the nut 302 and the washer 303, so that the change of the return rails is reduced to the maximum extent, the upper inclined wall 312 and the lower inclined wall 312 of the connecting piece 31 are abutted against the guide inclined planes 123 of the first return rail 1 and the second return rail 2, the bolt 301 and the nut 302 tighten the two connecting pieces 31 on the two sides, the connection and the reliable fixation of the first return rail 1 and the second return rail 2 are ensured, and the connection strength of the connection structure is high.
As shown in fig. 4, the present return rail connection structure further includes an insert 4 disposed on the first return rail 1 and/or the second return rail 2; the top of the first return rail 1 and the top of the second return rail 2 are symmetrically provided with two clamping grooves 122, two ends of the insert 4 are respectively clamped in the two clamping grooves 122, and the insert 4 is made of stainless steel. The first return rail 1 and the second return rail 2 are mainly made of aluminum alloy, the stainless steel inserts 4 are arranged at the tops of the first return rail 1 and the second return rail, and the stainless steel inserts 4 are embedded into the return rail bodies, so that the structural strength of the return rails can be improved; and both form steel aluminium composite rail form, bear the main part as the backward flow, both improved the structural strength of backward flow rail itself, had the backward flow effect that has promoted, and the backward flow rail mounting structure of this structure can be used for the backward flow, can be used for the induced flow again, and application range is wide.
Preferably, the connecting member 31 is provided with a plurality of first through holes 311 along the length direction thereof; a second through hole is formed in the first return rail 1, and a third through hole is formed in the second return rail 2; the fastening assemblies 30 are arranged in the first through hole 311, the second through hole and the third through hole; the two connecting pieces 31 are symmetrically arranged on two sides of the first return rail 1 and the second return rail 2.
Further preferably, the fastening assembly 30 comprises a bolt 301 and a nut 302; the bolt 301 sequentially passes through a first through hole 311 and a second through hole on one connecting piece 31 and a first through hole 311 on the other connecting piece 31 to be connected with the nut 302; or the bolt 301 sequentially passes through the first through hole 311 and the third through hole of one connecting piece 31 and the first through hole 311 of the other connecting piece 31 to be connected with the nut 302. The fastening assembly 30 further comprises a plurality of washers 303, the washers 303 are sleeved on the bolt 301, and the washers 303 are arranged to further improve the fixing effect of the bolt 301 and the nut 302, so that the nut 302 is not easy to loosen.
In the scheme, the reflux rail can meet the reflux requirement of a DC1500 volt traction power supply system, and safely, reliably and continuously meets the reflux of the running train; and the return rail connecting structure has simple structure, reliable connection and high stability.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (9)
1. A return rail connection structure, comprising:
a first return rail and a second return rail in butt joint with the first return rail; one sides of the first return rail and the second return rail are provided with first grooves, and the other sides of the first return rail and the second return rail are provided with second grooves;
the connecting device is used for connecting the first return rail and the second return rail and comprises a plurality of fastening components and two connecting pieces; the two connecting pieces are respectively arranged in the first groove and the second groove and are positioned between the first return rail and the second return rail; the fastening assembly is connected between the first return rail and the connector, and/or between the second return rail and the connector.
2. The return rail connection structure according to claim 1, wherein the connection member has a plurality of first through holes along a length direction thereof; the first return rail is provided with a second through hole, and the second return rail is provided with a third through hole; the fastening assemblies are arranged in the first through hole, the second through hole and the third through hole.
3. The return rail connection structure according to claim 2, wherein the two connection members are symmetrically disposed on two sides of the first return rail and the second return rail.
4. A return rail connecting structure according to claim 2 or 3, wherein said fastening member includes a bolt and a nut;
the bolt sequentially penetrates through a first through hole and a second through hole in one connecting piece and a first through hole in the other connecting piece to be connected with the nut; or the bolt sequentially passes through the first through hole and the third through hole on one connecting piece and the first through hole on the other connecting piece to be connected with the nut.
5. The return rail connection structure according to claim 4, wherein the fastening member further comprises a plurality of washers, each of which is fitted over the bolt.
6. The return rail connection structure according to claim 1, wherein the first groove and the second groove are provided at upper and lower ends thereof with a guide slope; the upper end and the lower end of the connecting piece are respectively provided with an inclined wall corresponding to the guide inclined plane, and the inclined wall is attached to the guide inclined plane.
7. The return rail connection structure according to claim 1 or 6, wherein the first return rail and the second return rail are each provided in an i-shaped cross section; the cross section of the connecting piece is in an isosceles trapezoid shape.
8. The return rail connection structure according to claim 1, further comprising an insert provided on the first return rail and/or the second return rail; the top of the first backflow rail and the top of the second backflow rail are symmetrically provided with two clamping grooves, and two ends of the insert are respectively clamped in the two clamping grooves.
9. The return rail connection structure according to claim 8, wherein the insert is made of stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022173664.1U CN213619459U (en) | 2020-09-28 | 2020-09-28 | Backflow rail connecting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022173664.1U CN213619459U (en) | 2020-09-28 | 2020-09-28 | Backflow rail connecting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213619459U true CN213619459U (en) | 2021-07-06 |
Family
ID=76657569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022173664.1U Active CN213619459U (en) | 2020-09-28 | 2020-09-28 | Backflow rail connecting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213619459U (en) |
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2020
- 2020-09-28 CN CN202022173664.1U patent/CN213619459U/en active Active
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