CN213619460U

CN213619460U - Backflow rail mounting structure

Info

Publication number: CN213619460U
Application number: CN202022174508.7U
Authority: CN
Inventors: 李平; 袁湘流; 张涵; 林奕屾; 吴安栋; 魏作栋; 任涛
Original assignee: Ningbo CRRC Rail Transit Equipment Co Ltd
Current assignee: Ningbo CRRC Rail Transit Equipment Co Ltd
Priority date: 2020-09-28
Filing date: 2020-09-28
Publication date: 2021-07-06
Anticipated expiration: 2030-09-28

Abstract

The utility model relates to a rail transit technical field discloses a backward flow rail mounting structure, including: the insulating support is arranged on the base and is detachably connected with the base; the insulating support is provided with a groove with an upward opening; the return track is arranged in the groove; the fastener is arranged on the insulating support and detachably connected with the insulating support, and the fastener is used for fixing the return rail. The utility model has the advantages that the assembly of the backflow rail mounting structure is simple, the structure is simple and the stability is high; the insulating support is arranged, the mounting structure can be used for mounting a common sleeper, the limit is adjusted, the limit of most vehicles can be met, and the mounting adaptability is high.

Description

Backflow rail mounting structure

Technical Field

The utility model relates to a rail transit technical field especially relates to a backward flow rail mounting structure.

Background

The return rail is a metal conductor rail for returning traction current to the negative pole of the traction substation, in a rail return direct current traction power supply system, the corrosion degree of stray current on a subway rail, a shield structure, a metal pipeline and electrical equipment is very large, and the protection measures mainly adopted by the stray current anti-corrosion system are measures for reducing return resistance, enhancing insulativity, enhancing line equipment and pipelines and the like. The arrangement form of the return track directly influences the use safety and the service life of each large system of the track. In the existing return current rail mounting structure, the problems of single application range, complex limit detection, complex structure and complex assembly process generally exist.

For example, the publication number "CN 101985285A" discloses a DC1500V four-rail mounting structure applied to urban rail transit, which comprises a traction rail, a return rail and two rows of running rails, wherein an insulating bracket is mounted on one side of each running rail, and the traction rail and the return rail are clamped in an insulating block of the insulating bracket. In the scheme, the urban rail transit direct-current traction four-rail power supply system has no stray current because the four rails (return rails) are thoroughly insulated from other facilities such as a track bed and the like, and measures and facilities for preventing the stray current are not considered any more. The method has the advantages that structural steel bars and metal pipelines of stations, tunnels and the like are protected from being corroded by stray current, the service lives of tunnels, bridges, pipelines and the like in rail transit are prolonged, and the safety of urban rail transit systems is guaranteed; however, a special limit is required to be arranged to detect whether the four-rail mounting structure meets the requirements, and the structure is generally only suitable for rail backflow, and is complex in overall structure and troublesome to mount.

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, high and wide backward flow rail mounting structure of adaptation scope of stability are proposed.

The utility model provides a technical scheme that its technical problem adopted is, provides a backflow rail mounting structure, including:

the insulating support is arranged on the base and is detachably connected with the base; a groove with an upward opening is formed in the insulating support;

the return rail is arranged in the groove;

the fastener is arranged on the insulating support and detachably connected with the insulating support, and the fastener is used for fixing the return rail.

Furthermore, the fastening pieces are arranged on two sides of the return rail;

the fastener comprises a fixing plate and a limiting raised head protruding out of the fixing plate, the fixing plate is connected with the insulating support, and the limiting raised head abuts against the return rail.

Furthermore, the section of the return rail is arranged in an I shape, and an insert is arranged on the return rail;

two clamping grooves are symmetrically formed in the top of the return rail, and two ends of the insert are respectively clamped in the two clamping grooves.

Furthermore, the insert is a stainless steel band and is fixedly connected with the return rail.

Further, the insulating support comprises a support part and a connecting part which is integrally arranged with the support part; the return rail with the fastener all sets up on the supporting part, connecting portion with the base can be dismantled and be connected.

Furthermore, the bottom of the supporting part and the top of the connecting part are both provided with an oblique angle.

Further, the base comprises a fixed seat and a connecting plate arranged on the fixed seat;

a plurality of U-shaped grooves are formed in the connecting plate, and the insulating support is detachably fixed on the connecting plate; the fixing seat is provided with a plurality of first fixing holes and a plurality of second fixing holes.

Furthermore, the plurality of first fixing holes are arranged side by side, and the plurality of second fixing holes are also arranged side by side;

one of the first fixing hole and the second fixing hole is provided with a waist hole, and the other one of the first fixing hole and the second fixing hole is provided with a round hole.

Compared with the prior art, the utility model discloses following beneficial effect has at least:

in the utility model, an insulating support is additionally arranged between the base and the return rail, which can be used for the installation of a common sleeper, and the limit is adjusted at the same time, thereby meeting the limit of most vehicles; the backflow rail mounting structure can be used for backflow and current collection, and is wide in application range; the limiting raised head of the fastener is abutted against the return rail, the return rail is fixed in the groove of the insulating support, the stability of the return rail is ensured, and corresponding bolt holes do not need to be formed in the return rail so as not to influence the strength of the return rail; the return rail is mainly made of aluminum alloy, and the stainless steel insert is arranged at the top of the return rail, so that the structural strength of the return rail can be further improved.

Drawings

Fig. 1 is a schematic structural view of the return rail mounting structure of the present invention;

FIG. 2 is a schematic view of the assembly of FIG. 1 secured adjacent a rail;

fig. 3 is a schematic plan view of the base.

In the figure, the position of the upper end of the main shaft,

1. a base; 10. a fixed seat; 11. a connecting plate; 101. a first fixing hole; 102. a second fixing hole; 111. a U-shaped groove;

2. an insulating support; 20. a groove; 21. a support portion; 22. a connecting portion; 212. oblique angle;

3. a return track; 30. a card slot;

4. a fastener; 40. a fixing plate; 41. a convex head is limited;

5. 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 3, a return rail mounting structure includes: base 1, insulating support 2, return current rail 3, fastener 4 and inserts 5. The device comprises a base 1 and an insulating support 2, wherein the insulating support 2 is arranged on the base 1 and is detachably connected with the base 1, and specifically, the insulating support 2 is detachably fixed on the base 1 through a bolt and nut structure; a groove 20 with an upward opening is formed in the insulating support 2; the return rail 3 is arranged in the groove 20, and the size of the bottom of the return rail 3 is slightly smaller than that of the groove 20, so that the return rail 3 can be conveniently arranged in the groove 20; and the fastening piece 4 is arranged on the insulating support 2 and detachably connected with the insulating support 2, and the fastening piece 4 is used for fixing the return rail 3.

Specifically, the fastening pieces 4 are arranged on two sides of the return rail 3; so as to ensure the force balance of the return rail 3 and the reliability of the fixation of the return rail 3. The fastening member 4 comprises a fixing plate 40 and a limiting raised head 41 protruding from the fixing plate 40, the fixing plate 40 and the limiting raised head 41 are integrally arranged, the fixing plate 40 is connected with the insulating support 2, that is, the fixing plate 40 is fixed on the insulating support 2, and the limiting raised head 41 abuts against the return rail 3, so that the limiting raised head 41 fixes the return rail 3 on the insulating support 2.

In the practical use process, an insulating support 2 is additionally arranged between a base 1 and a return rail 3, can be used for mounting a common sleeper, and is equivalent to an adjustment limit (type A vehicle) which can meet the limit of most vehicles; the mounting structure of the backflow rail 3 can be used for backflow and current collection, and has a wide application range; the limiting raised head 41 of the fastener 4 is abutted against the return rail 3, so that the return rail 3 is fixed in the groove 20 of the insulating support 2, the stability of the return rail 3 is ensured, and corresponding bolt holes do not need to be formed in the return rail 3, so that the strength of the return rail 3 is not influenced.

Preferably, the cross section of the return rail 3 is arranged in an i shape, and an insert 5 is arranged on the return rail 3; two clamping grooves 30 are symmetrically formed in the top of the return rail 3, two ends of the insert 5 are respectively clamped in the two clamping grooves 30, namely a hook portion is formed at two ends of the insert 5, the two hook portions are clamped in the clamping grooves 30, and the insert 5 is prevented from falling off from the return rail 3. The insert 5 is a stainless steel band, the insert 5 is fixedly connected with the return rail 3, and the stainless steel band is a contact surface of the return rail 3. The backflow rail 3 is made of aluminum alloy, the insert 5 is made of stainless steel, a steel-aluminum composite rail form is formed, the backflow rail 3 is taken as a backflow bearing main body, the structural strength of the backflow rail 3 is improved, the backflow effect of the backflow rail 3 is improved, the backflow rail mounting structure of the backflow rail can be used for backflow and can be used for current collection, and the application range is wide.

As shown in fig. 1, the insulating support 2 includes a support portion 21 and a connecting portion 22 provided integrally with the support portion 21; the return track 3 and the fastener 4 are both arranged on the supporting part 21, and the connecting part 22 is detachably connected with the base 1. The bottom of the support portion 21 and the top of the connecting portion 22 are both provided with an oblique angle 212, and specifically, the oblique angle 212 means that a notch is formed at the bottom of the support portion 21 and the top of the connecting portion 22, so as to save unnecessary material waste, and at the same time, the strength of the insulating support 2 is not weakened.

As shown in fig. 2-3, the base 1 includes a fixing seat 10 and a connecting plate 11 disposed on the fixing seat 10; a plurality of U-shaped grooves 111 are formed in the connecting plate 11, and the insulating support 2 is detachably fixed on the connecting plate 11; the fixing base 10 is provided with a plurality of first fixing holes 101 and a plurality of second fixing holes 102. The first fixing holes 101 are arranged side by side, and the second fixing holes 102 are also arranged side by side; one of the first fixing hole 101 and the second fixing hole 102 is a waist hole, and the other is a circular hole. As shown in fig. 3, the first fixing hole 101 is a waist hole, and the second fixing hole 102 is a circular hole, so that when the fixing base 10 is fixed on the ground, if the bolt in the second fixing hole 102 is aligned, the assembly is not affected even if the bolt in the first fixing hole 101 is slightly deviated, and the assembly difficulty is reduced. And the U-shaped groove 111 is arranged, so that the bolt can be conveniently slid in, and the installation is simple and convenient.

In the scheme, the backflow rail mounting structure is simple to assemble, simple in structure and high in stability; the insulating support is arranged, so that the sleeper bearing can be used for mounting a common sleeper, the limit is adjusted, the limit of most vehicles can be met, and the mounting adaptability is high; the backflow system can be used for backflow and current collection, is wide in application range, and reduces the use cost of the backflow system.

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

1. A return rail mounting structure, comprising:

the return rail is arranged in the groove;

2. The return rail mounting structure according to claim 1, wherein the fastening member is provided on both sides of the return rail;

3. The return rail mounting structure according to claim 2, wherein the return rail is provided with an i-shaped cross section, and an insert is provided on the return rail;

4. The return rail mounting structure according to claim 3, wherein the insert is a stainless steel band, and the insert is fixedly connected to the return rail.

5. The return rail mounting structure according to claim 1, wherein the insulating support includes a support portion and a connecting portion provided integrally with the support portion; the return rail with the fastener all sets up on the supporting part, connecting portion with the base can be dismantled and be connected.

6. The return rail mounting structure according to claim 5, wherein the bottom of the support portion and the top of the connecting portion are each provided with a bevel.

7. The return rail mounting structure of claim 1, wherein the base includes a fixing base and a connecting plate disposed on the fixing base;

8. The return rail mounting structure according to claim 7, wherein a plurality of the first fixing holes are arranged side by side, and a plurality of the second fixing holes are arranged side by side;