CN215552670U - Four-rail protection system - Google Patents
Four-rail protection system Download PDFInfo
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- CN215552670U CN215552670U CN202122348558.7U CN202122348558U CN215552670U CN 215552670 U CN215552670 U CN 215552670U CN 202122348558 U CN202122348558 U CN 202122348558U CN 215552670 U CN215552670 U CN 215552670U
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Abstract
The utility model discloses a four-rail protection system which is used for protection and ground insulation of a power supply rail and a return rail of urban rail transit. The four-rail protection system comprises an insulating support, two supporting pieces, an upper protection cover and a lower protection cover, wherein each supporting piece forms a rail clamping structure, and the two supporting pieces are vertically fixed on one side plate surface of a side plate of the insulating support, so that an upper conductive rail, a lower conductive rail and a return rail are clamped on the supporting pieces and fixed on the side plate of the insulating support; the protective cover is enveloped and fixed on the outer side surface of the insulating support, and the protective cover extends to the side surface of the fixed supporting piece from the upper end of the insulating support to form a protective top cover, so that the supporting piece is arranged below the protective top cover. The utility model meets the protection requirement of four rails and solves the problems of relative insulation and protection of the power supply rail and the return rail.
Description
Technical Field
The utility model relates to a protection system for urban rail transit power supply equipment, in particular to a four-rail protection system.
Background
Urban rail transit in China all adopts a contact net or a contact rail (a third rail) to supply power to vehicles, and flows back to a traction substation through a traveling rail to form a loop. In this power supply system, the running rails cannot be completely insulated from the track bed, resulting in leakage of return current through the running rails to the track bed and other metal structures and generation of stray currents. Stray current will corrode steel rails, integral track bed structural steel bars, tunnel structural steel bars, metal pipelines and electrical equipment along the subway, the corrosion degree of the stray current is much stronger than that of natural corrosion, and the safety and the service life of civil engineering structures and equipment of the subway are directly influenced.
The independent return rail technology is that the traction current is returned to a substation by establishing an independent rail, so that the leakage of stray current is limited to the maximum extent, and various problems caused by the stray current are fundamentally solved.
With the increasing importance of the harm of urban rail transit construction in China to stray current and the wide application of the DC1500V traction power supply voltage system, the DC1500V four-rail power supply system plays an increasingly important role in future subway construction, and the four-rail protection system meeting the DC1500V becomes the four-rail power supply system.
The prior art rail guard system is not applicable to a "four rail guard system". Based on this, a four-rail protection system, a matching device of the four-rail protection system becomes a technical problem to be solved urgently.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a protection system meeting the requirement of a four-rail, so as to solve the problems of relative insulation and protection of a power supply rail and a return rail.
The purpose of the utility model is realized as follows:
a four-rail protection system comprises an insulating support, a support and a protective cover;
the insulating support comprises a bottom plate and a side plate which are fixed into a whole;
the number of the supporting pieces is two, each supporting piece forms a rail clamping structure, and the two supporting pieces are vertically fixed on one side plate surface of the side plate of the insulating support, so that the upper rail and the lower rail are clamped on the supporting pieces and fixed on the side plate of the insulating support;
the protective cover is enveloped and fixed on the other opposite side face of the insulating support, and the protective cover extends forwards to one side of the side face where the supporting piece is fixed at the upper end of the insulating support to form a protective top cover, so that the supporting piece is arranged below the protective top cover.
Preferably, the bottom plate and the side plate of the insulating support form an integral piece with an L-shaped side face, a part of the side plate, which is used for fixing the support, protrudes outwards to form a reinforcing rib plate, a reinforcing rib plate extends downwards on the lower end face of the protruding reinforcing rib plate, and the lower end of the reinforcing rib plate is fixed with the bottom plate into a whole.
And lateral protective walls are integrally arranged on the two side edges of the insulating support, are perpendicular to the bottom plate or the side plate and extend towards the direction of one side surface provided with the supporting piece. And the bottom plate of the insulating support is provided with a long round hole.
Preferably, each of the supporting members includes two supporting units, the two supporting units are opposite to each other in the up-down direction and fixed on the side plate of the insulating support with a set gap, opposite and symmetrical protruding ribs are respectively disposed on two opposite side surfaces, and the gap between the opposite surfaces of the two supporting units and the surfaces of the protruding ribs thereon forms the rail clamping structure.
Grooves are respectively formed in two side walls of the convex edge, which are inclined inwards, on the supporting unit, and sliding blocks are respectively fixedly arranged in the grooves and correspond to the lower end face of the rail head and the upper end face of the rail of the supported rail.
Specifically, the sliding block is integrally provided with a fixing pin which is inserted into a pin hole on the bottom surface of the groove and fixed in the groove.
The supporting unit is connected with the insulating support through a bolt.
Specifically, the surfaces of the supporting units adjacent to the insulating support are provided with matched transverse tooth-shaped structures.
The screw hole of the support unit screwed on the insulating support is a vertical long round hole. The bolt holes on the supporting unit can be round holes
Preferably, the protection hood comprises an upper protection hood and a lower protection hood, the upper protection hood comprises the protection top hood and the side hood which are integrally formed, and the lower protection hood is a flat plate-shaped hood body.
The structure of the seam of the upper protective cover and the lower protective cover is as follows: the lower end of the upper protective cover is extended with a tail cornice which inclines outwards and downwards, and the length of the tail cornice is suitable for shielding a gap between the lower protective cover and the upper protective cover.
The protective cover is in threaded connection with the insulating support.
And screw holes are formed in the top and the back of the insulating support and used for being in threaded connection with the protective cover.
The insulating support, the supporting piece and the protective cover are all made of glass fiber reinforced plastics.
The four-rail protection system provided by the utility model is a DC1500V four-rail protection system.
A conductor rail is fixed in an upper support of the side plate of the insulating support, and a return rail is fixed in a lower support. According to the four-rail protection system, the insulating support is L-shaped, so that the occupied space of the support during installation is effectively reduced, and the whole weight of the insulating support is reduced due to the optimized internal structure; the rail is clamped by the support piece comprising the two symmetrical support units, the structure is simple and reliable, and the rail can be finely adjusted up and down by the design of the strip-shaped mounting hole and the tooth-shaped structure; the support piece is embedded with the nylon slider and can ensure that the track freely slides in the clamping groove.
Drawings
Fig. 1 is a schematic perspective view of a protection system according to an embodiment of the present invention.
Fig. 2 is an exploded schematic view of a protection system according to an embodiment of the present invention.
Fig. 3 is a side view of the shield system of fig. 1.
Fig. 4 is a schematic perspective view of an inner side surface of an insulating support according to an embodiment of the present invention.
Fig. 5 is a perspective view of the dielectric support of fig. 4 showing its side and rear surfaces.
Fig. 6 is a schematic perspective view of a supporting unit according to an embodiment of the present invention.
Fig. 7 is an exploded view of the supporting unit shown in fig. 6.
Fig. 8 is a side view schematically illustrating the supporting unit shown in fig. 6.
Fig. 9 is a schematic perspective view of a protection system after installation of a rail according to an embodiment of the present invention.
Fig. 10 is a side view of the structure of fig. 9.
Wherein: 1-an insulating support, 1-1 a middle vertical plate; 1-2 reinforcing rib plates; 1-3 reinforcing rib plates; 2-a support; 2-1 nylon slide block; 3-upper shield; 4-lower shield.
Detailed Description
As shown in fig. 1 to 3, in the present embodiment, there is provided a DC1500V four-rail protection system including an insulating support 1, a support 2, and a protection cover.
The insulating support 1 is an L-shaped integral piece integrally formed by a bottom plate and a side plate.
The number of the supporting pieces 2 is two, and the two supporting pieces 2 are vertically and rightly fixed on the side plates of the insulating support 1.
As shown in figures 4 and 5, the middle side plate part of two supporting parts 2 fixed on an insulating support 1 protrudes outwards to form a reinforcing rib plate 1-1, a reinforcing rib plate 1-2 is arranged on the lower end surface of the protruding reinforcing rib plate 1-1 in a downward extending mode, and the lower end of the reinforcing rib plate 1-2 is fixed with a bottom plate of the insulating support 1 into a whole. Lateral protective walls 1-3 are integrally arranged on the edges of two sides of the insulating support 1, and the lateral protective walls 1-3 are perpendicular to the bottom plate or the side plate and extend towards the direction of the inner side surface of the L-shaped insulating support 1 provided with the supporting piece 2. A vertical long round hole is formed in the reinforcing rib plate 1-1, the supporting piece 2 is fixed on a side plate of the insulating support 1 through a bolt, and a transverse tooth-shaped groove is formed in the surface of the reinforcing rib plate 1-1.
As shown in fig. 6 to 7, each support member 2 includes two support units 20, the two support units 20 are fixed to the side plates of the insulating support 1 in a vertically opposite manner with a predetermined gap therebetween, two opposite and symmetrical ribs 21 are respectively provided on two adjacent sides of the two support units 20, and the gap between the opposite surfaces of the two support units 20 and the surfaces of the upper ribs 21 thereof constitutes a rail holding structure a in which a rail is fixed. The supporting unit 20 is provided with a circular bolt hole, and a transverse tooth-shaped groove is formed on the surface of the supporting unit 20 connected with the insulating support 1.
The side surface of the support unit 20 having the transverse tooth-shaped groove is fitted to the side surface of the side plate of the insulating holder 1 having the transverse tooth-shaped groove, and the both are fixed by a bolt.
Through the connecting structure that bolts are arranged in the tooth-shaped grooves on the insulating support 1 and the supporting piece, the long round holes on the insulating support 1 and the round holes on the supporting unit 20 in a penetrating mode, the position of the supporting piece 2 on the insulating support 1 can be adjusted.
The two inwardly inclined side walls of the protruding ribs 21 of the supporting unit 20 are respectively provided with a groove, and the sliding blocks 2-1 are respectively and fixedly arranged in the grooves and correspond to the lower end surface of the rail head and the upper end surface of the rail base of the supported rail (see fig. 9 and 10). The connecting structure of the sliding block 2-1 and the supporting unit 20 is a positioning pin connecting structure, and a fixing pin is integrally arranged on the sliding block 2-1 and inserted into a pin hole on the bottom surface of the groove, so that the sliding block 2-1 is fixed in the groove.
The protective cover is enveloped and fixed on the outer side surface, namely the back surface, of the insulating support 1, the protective cover comprises an upper protective cover 3 and a lower protective cover 4 (see fig. 1-3), the upper protective cover 3 comprises a protective top cover and a lateral cover body which are integrally formed, the protective top cover is arranged on the upper end of the insulating support 1 and extends forwards towards one side of the inner side surface of the fixed supporting part 2, so that the supporting part 2 and a track clamped and fixed on the supporting part are arranged below the protective top cover, and the lateral cover body covers the upper part of the back surface of the side plate of the insulating support 1. The lower shield 4 is a flat plate-shaped cover body covering a portion of the back surface of the side plate below.
The structure of the seam of the upper shield 3 and the lower shield 4 is: the lower end of the upper protective cover 3 is provided with a tail cornice 3-1 which inclines outwards and downwards in an extending way, and the length of the tail cornice 3-1 is used for shielding a gap between the lower protective cover 4 and the upper protective cover 3.
Screw holes are formed in the top surface and the back surface of the insulating support 1, grooves are formed in the back surface of the side plate of the insulating support 1, the screw holes are formed in the edges of the two sides of each groove, and the upper protective cover 3 and the lower protective cover 4 are fixed to the top surface and the back surface of the insulating support 1 through the screw holes and screws.
The insulating support 1, the supporting piece 2, the upper protective cover 3 and the lower protective cover 4 are all made of glass fiber reinforced plastics, the insulating support 1 and the supporting piece 2 adopt an SMC compression molding process, and the upper protective cover 3 and the lower protective cover 4 adopt a pultrusion process.
The supporting piece 2 is composed of supporting units, every two supporting units 20 are in a group and are symmetrically arranged, the two groups are divided into an upper group and a lower group which are arranged on the surface of a reinforcing rib plate 1-1 in the middle of the insulating support 1 through bolts, the reinforcing rib plate can also be called as a middle vertical plate, tooth-shaped structures are arranged on the bottom surfaces of the reinforcing rib plate and the supporting units 20 in the supporting piece 2, the assembly can be more fastened, and the mounting holes of the middle vertical plate are strip-shaped holes, so that the supporting piece 2 is allowed to be finely adjusted up and down. As shown in figure 4, the surface of the middle vertical plate of the insulating support 1 protrudes inwards, two reinforcing rib plates 1-2 are connected with the bottom plate, lateral protective walls 1-3 are arranged on two sides of the insulating support 1, the insulating support 1 integrally designed into an L shape can effectively reduce the occupied space when the support is installed, and the rigidity and the strength of the insulating support can be improved by the middle vertical plate and the lateral protective walls. As shown in fig. 6 to 8, a groove with two positioning holes is formed on the contact surface of the support member 2 and the rail, and a nylon slider 2-1 with two positioning pins, which is matched with the groove, is embedded in the groove, so that the nylon slider 2-1 can enable the rail to freely slide in the clamping groove without retardation when the rail is expanded with heat and contracted with cold.
As shown in fig. 2, the top and the side of one end of the upper protection cover 3 are provided with mounting holes and are connected with the insulating support 1 by bolts, the lower protection cover 4 is also connected with the insulating support 1 by bolts, and the upper protection cover 3 and the lower protection cover 4 envelop the whole insulating support 1, so that the damage of rain, snow, dust and foreign objects to the track is reduced. The gap between the upper protection cover 3 and the lower protection cover 4 is covered by a tail cornice 3-1 arranged at the tail part of the upper protection cover 3.
As shown in fig. 9 and 10, the support member 2 is contacted with the two sides of the angle between the rail web of the rail, so as to ensure clamping and fastening.
In the use of the protection system provided by the utility model, the upper group of supports 2 fixes the conductor rail A, and the lower group of supports 2 fixes the return rail B.
Claims (10)
1. A four-rail protection system is characterized by comprising an insulating support, a support piece and a protective cover;
the insulating support comprises a bottom plate and a side plate which are fixed into a whole;
the number of the supporting pieces is two, each supporting piece forms a rail clamping structure, and the two supporting pieces are vertically fixed on one side plate surface of the side plate of the insulating support, so that the upper rail and the lower rail are clamped on the supporting pieces and fixed on the side plate of the insulating support;
the protective cover is enveloped and fixed on the other opposite side face of the insulating support, and the protective cover extends forwards to one side of the side face where the supporting piece is fixed at the upper end of the insulating support to form a protective top cover, so that the supporting piece is arranged below the protective top cover.
2. The four-rail protection system according to claim 1, wherein the bottom plate and the side plate of the insulating support form an integral piece with an L-shaped side surface, a part of the side plate, which is fixed with the support, of the side plate protrudes outwards to form a reinforcing rib plate, a reinforcing rib plate is arranged on the lower end surface of the protruding reinforcing rib plate in a downward extending mode, and the lower end of the reinforcing rib plate is fixed with the bottom plate into a whole.
3. The four-rail guard system according to claim 1 or 2, wherein both side edges of the insulating support are integrally provided with lateral guard walls extending perpendicular to the bottom plate or the side plate in a direction toward one side on which the supporting member is provided; and/or the presence of a gas in the gas,
and the bottom plate of the insulating support is provided with a long round hole.
4. The four-rail protection system according to claim 1 or 2, wherein each of the supporting members comprises two supporting units, the two supporting units are fixed on the side plates of the insulating support in an up-down opposite manner with a set gap, two opposite and symmetrical ribs are respectively arranged on two opposite sides, and the gap between the opposite surfaces of the two supporting units and the surfaces of the ribs thereon forms the rail holding structure.
5. The four-rail protection system according to claim 4, wherein two inwardly inclined side walls of the protruding ribs of the supporting unit are respectively provided with a groove, and a sliding block is respectively fixedly arranged in the groove and corresponds to the lower end surface of the rail head and the upper end surface of the rail bottom of the supported rail; and/or the presence of a gas in the gas,
the supporting unit is connected with the insulating support through a bolt.
6. The four-rail protection system according to claim 5, wherein the sliding block is integrally provided with a fixing pin which is inserted into a pin hole on the bottom surface of the groove for fixing; and/or the presence of a gas in the gas,
the surfaces of the supporting units adjacent to the insulating support are provided with matched transverse tooth-shaped structures; and/or the presence of a gas in the gas,
the bolt hole of the support unit screwed on the insulating support is a vertical long round hole.
7. The four-rail shield system according to claim 1 or 2, wherein the shield comprises an upper shield and a lower shield, the upper shield comprising the integrally formed shield top and side shields, the lower shield being a flat plate-shaped shield; and/or the presence of a gas in the gas,
the protective cover is in threaded connection with the insulating support.
8. The four-rail guard system according to claim 7, wherein the structure at the seam of the upper and lower guards is: the lower end of the upper protective cover is provided with a tail cornice which inclines outwards and downwards in an extending way, and the length of the tail cornice is used for shielding a gap between the lower protective cover and the upper protective cover; and/or the presence of a gas in the gas,
and screw holes are formed in the top and the back of the insulating support and used for being in threaded connection with the protective cover.
9. The four-rail protection system according to claim 1, wherein the insulating support, support and shield are all made of fiberglass reinforced plastic.
10. The four-rail protection system according to claim 1, which is a DC1500V four-rail protection system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122348558.7U CN215552670U (en) | 2021-09-27 | 2021-09-27 | Four-rail protection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122348558.7U CN215552670U (en) | 2021-09-27 | 2021-09-27 | Four-rail protection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215552670U true CN215552670U (en) | 2022-01-18 |
Family
ID=79852441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122348558.7U Active CN215552670U (en) | 2021-09-27 | 2021-09-27 | Four-rail protection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215552670U (en) |
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2021
- 2021-09-27 CN CN202122348558.7U patent/CN215552670U/en active Active
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