CN221250746U - Composite current-teaching four-rail system insulating support - Google Patents
Composite current-teaching four-rail system insulating support Download PDFInfo
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- CN221250746U CN221250746U CN202322956542.3U CN202322956542U CN221250746U CN 221250746 U CN221250746 U CN 221250746U CN 202322956542 U CN202322956542 U CN 202322956542U CN 221250746 U CN221250746 U CN 221250746U
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- rail
- bracket
- cushion block
- composite current
- rail system
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- 239000002131 composite material Substances 0.000 title claims abstract description 17
- 210000000078 claw Anatomy 0.000 claims description 50
- 229920001778 nylon Polymers 0.000 claims description 26
- 239000004677 Nylon Substances 0.000 claims description 25
- 239000011152 fibreglass Substances 0.000 claims description 3
- 238000010992 reflux Methods 0.000 description 13
- 229910000746 Structural steel Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Current-Collector Devices For Electrically Propelled Vehicles (AREA)
Abstract
The utility model belongs to the technical field of urban rail transit power supply equipment, and particularly discloses a composite current-supply four-rail system insulating bracket which adopts the following technical scheme: the utility model can realize the backflow of the side backflow rail of the lower contact rail, and radically eliminates the harm of stray current. Meanwhile, the support structure not only can realize upgrading and reconstruction on the basis of the existing three-rail support, reduces reconstruction cost, does not influence the operation of the existing line, but also can realize interconnection and intercommunication of a newly-built four-rail line and the existing three-rail line.
Description
Technical Field
The utility model belongs to the technical field of urban rail transit power supply equipment, and particularly relates to a composite current-supply four-rail system insulating bracket.
Background
At present, urban rail transit in China mainly adopts a direct current traction power supply mode, and is powered by a contact net or a contact rail and flows back through a running rail. Because the steel rail is difficult to realize complete insulation to the ground, partial current inevitably flows into a track bed from the running rail, flows into metal pipelines such as structural steel bars, water pipes along the track, oil gas pipelines and the like from the track bed, flows back into the track bed through the metal pipelines, and finally flows back into a traction substation through the running rail to form stray current. Stray current will all corrode the metal equipment along the track, the track bed structural steel bars, the civil engineering structural steel bars and the subway, thereby influencing the service life of the track, the structural steel bars and related metal equipment, and causing safety accidents in severe cases.
Similar researches have been carried out at home and abroad based on the problem of avoiding the influence of stray current, including modes of four rails, a net rail and the like. For the rail traffic engineering adopting the third rail for current supply, no four-rail implementation case exists in China, compared with the impedance of a net rail system, the impedance of the four-rail system is further reduced, the distance between power substations can be further improved, the risk of abnormal abrasion of a bow net and line breakage of a contact line is avoided, the landscape is good, the operation and maintenance workload is small, and the method has obvious advantages. Patent CN 208021258U discloses an urban traffic four-rail is with adjustable insulating strutting arrangement, including the support, be provided with the layer board in support one side, the layer board includes supporting part and mounting panel, mounting panel and support side contact, supporting part and track side profile assorted installs the cassette on the mounting panel, and the cassette includes buckle portion and carrier part, still installs the jack catch on the mounting panel, goes up jack catch shape and track side profile assorted, and the fixed return rail of buckle portion and supporting part cooperation, goes up jack catch and carrier part cooperation fixed power supply rail. The power supply rail and the reflux rail are fixed through the supporting device, the original reflux is realized through two parallel rails, and the corrosion to railway facilities caused by the reflux of current through the steel rail is avoided. However, the patent is suitable for the situation that the power supply rail and the return rail are both laterally arranged, and the existing three-rail line generally adopts a lower current-feeding mode, so that the compatibility of the existing three-rail engineering and the four-rail engineering is poor, and therefore, the novel composite current-feeding four-rail system is particularly important.
Disclosure of utility model
Aiming at the problems that the cost required by upgrading the current three-rail power supply system into a four-rail power supply system is high, the construction difficulty is high and the influence on operation is remarkable, the utility model provides the composite current-supply four-rail system insulating bracket. On the premise of not changing the installation position of the existing three rails, the side current-feeding and current-returning rail is additionally arranged, so that the problems of stray current and rail potential are thoroughly solved, engineering implementation is realized, and the influence on the existing line in the transformation process is small. Meanwhile, interconnection and intercommunication between the newly built four-rail line and the existing three-rail line can be realized, and the engineering feasibility is very high.
In order to solve the technical problems, the utility model adopts the technical scheme that: a composite current-imparting four-rail system insulating support, comprising:
A bracket body;
The lower bracket and the lower claw are fixedly arranged on the bracket body and jointly form a supporting part for clamping the lower flow rail A;
The two upper clamping claws are arranged on the same side face of the bracket body and are oppositely arranged to form a clamping part for clamping the side backflow rail B.
Further, the front end of the lower claw is provided with a lower left supporting part, the front end of the lower bracket is provided with a lower right supporting part, and the lower left supporting part and the lower right supporting part are positioned on the same horizontal plane and jointly support the lower flow-feeding rail A.
Further, the lower left support portion and the upper portion of the lower right support portion are respectively provided with a lower nylon cushion block positioning hole, and two lower nylons Long Diankuai are respectively fixed on the lower bracket and the lower claw through being inserted into the lower nylon cushion block positioning holes.
Further, a cushion block is arranged between the two upper clamping claws and the bracket body, and the upper clamping claws, the cushion block and the bracket body are fixedly connected through bolts.
Further, the front ends of the opposite side surfaces of the upper clamping jaws are provided with upper clamping portions, and the two upper clamping portions are jointly used for clamping the side backflow rail B.
Further, two sides of the upper clamping part are respectively provided with an upper nylon cushion block positioning hole, and two upper nylon Long Diankuai are fixed on one upper claw through being inserted into the upper nylon cushion block positioning holes.
Further, a lower bracket rib plate is arranged at the lower part of the lower bracket, and a lower claw rib plate is arranged at the upper part of the lower claw.
Furthermore, the sides of the lower bracket, the lower claw, the cushion block and the bracket body, which are in contact with each other, are provided with serrated surfaces, and the serrated surfaces of the bracket body are provided with strip-shaped holes for bolts to pass through.
Further, the bracket body, the lower bracket, the lower claw, the upper claw and the cushion block are made of glass fiber reinforced plastic.
Compared with the prior art, the utility model has the beneficial effects that.
1. The utility model takes the three-rail insulating bracket widely used at present as a main body, and two upper clamping jaws are additionally arranged above the bracket to fix the reflux rail, so that the reflux of the reflux rail at the side part of the lower contact rail can be realized, and the harm of stray current is radically stopped. The lower flow-teaching I-shaped rail is adopted as the flow-teaching rail, and the lower flow-teaching mounting mode has better protection effect compared with the mode that the existing lower flow-teaching engineering contact rail is laterally arranged in the same time as the existing lower flow-teaching engineering contact rail is consistent with the mounting position; the reflux rail adopts a hollow I-shaped rail with a lateral flow-imparting function, does not influence the passage of the existing collector shoe, and has transformation conditions.
2. In the aspect of the support structure, the reflux rail is clamped by the two upper clamping jaws, so that the fixing structure is more stable and reliable, and the electric force caused by short-circuit heavy current can be effectively resisted by additionally arranging the rib plates on the lower bracket and the lower clamping jaws, so that the strength of the lower bracket and the clamping jaws is increased.
3. The setting in bar hole can realize the jack catch fine setting from top to bottom, provides the convenience for construction installation, and the adoption of serrated face makes overall structure more firm simultaneously.
Drawings
The utility model is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present utility model;
FIG. 2 is a schematic view illustrating a usage state of an embodiment of the present utility model;
FIG. 3 is an exploded view of an embodiment of the present utility model;
FIG. 4 is a side view of an embodiment of the present utility model;
FIG. 5 is a schematic view of a partial structure of an embodiment of the present utility model;
fig. 6 is a schematic partial structure of an embodiment of the present utility model.
In the figure, 1 is a bracket body, 2 is a lower bracket, 2-1 is a lower right supporting part, 2-2 is a lower bracket rib plate, 2-3 is a lower nylon cushion block, 3 is a lower claw, 3-1 is a lower left supporting part, 3-2 is a lower claw rib plate, 4 is an upper claw, 4-1 is an upper clamping part, 4-2 is an upper nylon cushion block, 5 is a cushion block, 6 is a lower nylon cushion block positioning hole, 7 is an upper nylon cushion block positioning hole, 8 is a serrated surface, A is a flow-imparting rail, and B is a backflow rail.
Detailed Description
As shown in fig. 1-2, a composite current-carrying four-rail system insulating bracket comprises a bracket body 1, a lower bracket 2, a lower claw 3 and two upper claws 4. The bracket body 1 is an L-shaped integral part formed by integrating a bottom plate and a side plate, and four strip-shaped holes are formed below the bottom plate, so that the adjustment perpendicular to the line direction can be realized. Eight strip-shaped holes are formed in the side plates and used for fixing the lower bracket 2, the lower clamping jaw 3 and the upper clamping jaw 4, and the strip-shaped holes can be used for adjusting the height direction of the flow-imparting rail A and the height direction of the flow-returning rail B.
The lower bracket 2 and the lower claw 3 are provided with mounting holes on the lateral parts and are connected with the bracket body 1 through bolts. The lower bracket 2 and the lower jaw 3 together form a support for clamping the lower feed rail a. Two upper claws 4 are oppositely installed to form a clamping part for clamping the side return rail B.
According to the utility model, the two upper clamping claws 4 are additionally arranged above the bracket body 1 to fix the reflux rail B, so that the reflux of the reflux rail on the lower contact rail current-carrying side part can be realized, and the harm of stray current is radically eliminated. The lower bracket 2 and the lower claw 3 change the lateral arrangement mode of the existing current supply rail A, fix the current supply rail A horizontally and transversely, but do not change the installation position, do not influence the passing of the existing collector shoe, and have transformation conditions.
In order to increase the connection stability of the upper claws 4 with the bracket body 1, the two upper claws 4 are bolted with the bracket body 1 through the spacer blocks 5. The two upper clamping claws 4 are respectively arranged at the upper side and the lower side of the cushion block 5, and the two upper clamping claws 4 are oppositely arranged. A clamping part is formed between the two upper clamping jaws 4 to laterally fix the return rail B.
In addition, in order to increase structural stability of the lower bracket 2 and the lower jaw 3, a lower bracket rib 2-2 is provided at a lower portion of the lower bracket 2, and a lower jaw rib 3-2 is provided at an upper portion of the lower jaw 3. The existence of the rib plates increases the stability of the whole structure, so that the clamping effect is better, and the conditions such as shaking do not occur.
In the above embodiment, only the lower jaw 3 and the lower bracket 2 are defined for fixing the flow-imparting rail a, but a specific clamping form is not limited. So long as the clamping and fixing of the flow-imparting rail a can be completed. For a better understanding of the clamping principle of the present utility model, a specific clamping form is provided in this embodiment.
As shown in fig. 3-4, the front end of the lower claw 3 is provided with a lower left supporting part 3-1, the front end of the lower bracket 2 is provided with a lower right supporting part 2-1, the lower left supporting part 3-1 and the lower right supporting part 2-1 are positioned on the same horizontal plane, the lower flow-transmitting rail A adopts a flow-transmitting I-shaped rail, and two sides of the I-shaped rail are respectively pressed on the lower left supporting part 3-1 and the lower right supporting part 2-1, so that the lower flow-transmitting rail A is horizontally fixed, the existing lateral clamping and fixing mode is changed, and the protection effect is better.
In addition, as shown in fig. 5, the upper parts of the lower left support part 3-1 and the lower right support part 2-1 are respectively provided with a lower nylon cushion block positioning hole 6, and the two lower nylon cushion blocks 2-3 are respectively fixed on the lower bracket 2 and the lower claw 3 by inserting the lower nylon cushion block positioning holes 6. The lower nylon spacer 2-3 is in direct contact with the lower supply rail a. Because nylon has better wear resistance and lower friction coefficient, the phenomenon that deformation generated by thermal expansion and cold contraction of the contact rail and the bracket body 1 are blocked can not occur.
On the basis of the above embodiment, a specific form of clamping of the two upper claws 4 is given in this embodiment, and the lateral clamping of the side return rail B is completed by using the two upper claws 4.
As shown in fig. 3-4, the front ends of the opposite sides of the upper claw 4 are provided with upper clamping parts 4-1, the two upper clamping parts 4-1 are oppositely arranged to form clamping spaces, the clamping spaces exactly match the shape of the side backflow rail B, and the two upper clamping parts 4-1 are commonly used for clamping the side backflow rail B. The upper clamping part 4-1 is buckled on the side edge of the side reflux rail B to finish clamping work.
As shown in FIG. 6, two sides of the upper clamping part 4-1 are respectively provided with an upper nylon cushion block positioning hole 7, and two upper nylon cushion blocks 4-2 are fixed on one upper claw 4 by being inserted into the upper nylon cushion block positioning holes 7. When the upper claw 4 clamps the side backflow rail B, the upper nylon cushion block 4-2 is in direct contact with the backflow rail B, and the phenomenon that deformation and a bracket are blocked due to thermal expansion and contraction of the contact rail cannot occur due to good wear resistance and low friction coefficient of nylon.
The surfaces of the lower bracket 2, the lower claw 3 and the cushion block 5, which are in contact with the side plates of the bracket body 1, are provided with the serrated surfaces 8 to realize the anti-skid fixation. The serrated surface 8 increases friction force and improves the clamping stability of the whole bracket. And the bracket body 1, the lower bracket 2, the lower claw 3, the upper claw 4 and the cushion block 5 are all made of glass fiber reinforced plastic and adopt an SMC compression molding process. The power supply system is suitable for a DC1500V four-rail power supply system.
In the actual working state, the reflux rail B adopts a low-profile character rail, so that the instantaneous electric power generated during short circuit can be resisted, the moment of inertia is reduced, and the stability of a four-rail system is improved. The position relation between the flow-imparting rail A and the flow-returning rail B can be adjusted and adapted according to engineering conditions and limit conditions.
The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present utility model.
Claims (9)
1. A composite current-imparting four-rail system insulating support, comprising:
A bracket body (1);
The lower bracket (2) and the lower claw (3) are fixedly arranged on the bracket body (1), and the lower bracket (2) and the lower claw (3) form a supporting part together and are used for clamping the lower flow rail (A);
The two upper clamping claws (4), the upper clamping claws (4) and the lower clamping claws (3) are arranged on the same side face of the bracket body (1), and the two upper clamping claws (4) are oppositely arranged to form a clamping part for clamping the side backflow rail (B).
2. The composite current-carrying four-rail system insulating support according to claim 1, wherein: the front end of the lower claw (3) is provided with a lower left supporting part (3-1), the front end of the lower bracket (2) is provided with a lower right supporting part (2-1), and the lower left supporting part (3-1) and the lower right supporting part (2-1) are positioned on the same horizontal plane and jointly support the lower flow-feeding rail (A).
3. A composite current-carrying four-rail system insulating support according to claim 2, characterized in that: the lower left support part (3-1) and the upper part of the lower right support part (2-1) are respectively provided with a lower nylon cushion block positioning hole (6), and the two lower nylon cushion blocks (2-3) are respectively fixed on the lower bracket (2) and the lower claw (3) through being inserted into the lower nylon cushion block positioning holes (6).
4. A composite current-carrying four-rail system insulating support according to claim 1 or 3, characterized in that: and a cushion block (5) is arranged between the two upper clamping claws (4) and the bracket body (1), and the upper clamping claws (4), the cushion block (5) and the bracket body (1) are fixedly connected through bolts.
5. The composite current-carrying four-rail system insulating support according to claim 4, wherein: the front ends of the opposite side surfaces of the upper clamping jaws (4) are provided with upper clamping portions (4-1), and the two upper clamping portions (4-1) are jointly used for clamping the side backflow rail (B).
6. The composite current-carrying four-rail system insulating support according to claim 5, wherein: two sides of the upper clamping part (4-1) are respectively provided with an upper nylon cushion block positioning hole (7), and two upper nylon cushion blocks (4-2) are fixed on one upper clamping jaw (4) through being inserted into the upper nylon cushion block positioning holes (7).
7. The composite current-carrying four-rail system insulating support according to claim 1, wherein: the lower portion of the lower bracket (2) is provided with a lower bracket rib plate (2-2), and the upper portion of the lower claw (3) is provided with a lower claw rib plate (3-2).
8. The composite current-carrying four-rail system insulating support according to claim 4, wherein: the lower bracket (2), the lower claw (3), the cushion block (5) and the side surface of the bracket body (1) which are in contact with each other are provided with a serrated surface (8), and the serrated surface (8) of the bracket body (1) is provided with a strip-shaped hole for a bolt to pass through.
9. The composite current-carrying four-rail system insulating support according to claim 4, wherein: the bracket body (1), the lower bracket (2), the lower claw (3), the upper claw (4) and the cushion block (5) are made of glass fiber reinforced plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322956542.3U CN221250746U (en) | 2023-11-02 | 2023-11-02 | Composite current-teaching four-rail system insulating support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322956542.3U CN221250746U (en) | 2023-11-02 | 2023-11-02 | Composite current-teaching four-rail system insulating support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221250746U true CN221250746U (en) | 2024-07-02 |
Family
ID=91623857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322956542.3U Active CN221250746U (en) | 2023-11-02 | 2023-11-02 | Composite current-teaching four-rail system insulating support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221250746U (en) |
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2023
- 2023-11-02 CN CN202322956542.3U patent/CN221250746U/en active Active
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| GR01 | Patent grant |