Rail transit four-rail protection device

Abstract

The utility model relates to the technical field of rail transit, and discloses a rail transit four-rail protection device which comprises a support, a supporting portion and a protection cover, the supporting portion comprises an upper supporting block, a strip-shaped supporting frame and a lower supporting block, and the upper supporting block, the supporting frame and the lower supporting block are arranged at intervals along a vertical plate of the support from top to bottom and fixed to the vertical plate of the support. An upper rail channel used for embedding a conductor rail is formed between the upper supporting block and the top of the supporting frame, a lower rail channel used for embedding a backflow rail is formed between the lower supporting block and the bottom of the supporting frame, protective covers are arranged on the sides, away from the supporting part, of the supports and the tops of the supports, and the supports are fixed to the two ends, in the length direction, of the protective covers respectively. The device is reasonable in structure, high in installation precision, convenient to debug, low in production and installation cost and good in safety.

Description

Technical Field

[0001] The utility model relates to the technical field of rail transportation, in particular to a rail transportation four-track protection device. Background Art

[0002] my country's urban rail transit usually uses overhead contact network or contact rail (third rail) to supply power to vehicles, and the power flows back to the traction substation through the running rail to form a loop.

[0003] Under the above power supply system, the running rails cannot be completely insulated from the roadbed, resulting in the return current leaking through the running rails to the roadbed and other metal structures and generating stray current. The stray current will cause corrosion to the rails, the steel bars of the integral roadbed structure, the steel bars of the tunnel structure, and the metal pipes and electrical equipment along the subway line. The degree of corrosion is stronger than natural corrosion, which directly affects the safety and service life of the subway civil structures and equipment.

[0004] The independent return rail technology sets up a separate track to return the traction current to the substation, thereby limiting the leakage of stray current to the greatest extent and fundamentally solving various problems caused by stray current.

[0005] As domestic urban rail transit construction pays more and more attention to the hazards of stray current and the DC1500V traction power supply voltage standard is widely used, the DC1500V "four-rail" power supply system will play an increasingly important role in future subway construction.

[0006] The four-track protection system in the prior art has the problems of complex structure, inconvenient installation, cumbersome adjustment and poor precision, and it is urgent to solve the above technical problems. Utility Model Content

[0007] The utility model provides a rail transit four-track protection device, which has reasonable structure, high installation precision, convenient debugging, low production and installation costs and good safety.

[0008] The above-mentioned purpose of the utility model is achieved through the following technical solutions:

[0009] A rail transit four-track protection device comprises a support, a support part and a protective cover, the support part comprises an upper support block, a strip-shaped support frame and a lower support block, the upper support block, the support frame and the lower support block are arranged from top to bottom along the vertical plate of the support at intervals and fixed on the vertical plate of the support, an upper rail channel for embedding a conductive rail is formed between the upper support block and the top of the support frame, a lower rail channel for embedding a return rail is formed between the lower support block and the bottom of the support frame, a protective cover is provided on one side of the support away from the support part and on the top of the support, and a support is fixed to each of the two ends of the protective cover along the length direction.

[0010] The above-mentioned rail transit four-track protection device, wherein the support is L-shaped, and the support includes a horizontal bottom plate and a vertical upright plate, two vertical ribs are provided on the inner side of the upright plate, and the ends of the two ribs are fixedly connected to the vertical plate, and the vertical plate is provided with a waist-shaped bolt hole, and the bolt hole extends in the up and down direction. The upright plate is provided with an operating port opposite to the vertical plate and used for installing bolts, the vertical plate is parallel to the upright plate, and the lower parts of the two ribs extend downward to the bottom plate, and the bottom plate is provided with a waist-shaped mounting hole.

[0011] The above-mentioned rail transit four-track protection device, wherein the vertical plate is provided with anti-slip grooves on the side close to the support part, and the upper support block, support frame and lower support block are also provided with corresponding anti-slip grooves on the side close to the vertical plate, and the anti-slip grooves include multiple ones and are horizontally arranged with equal intervals in the up and down directions.

[0012] The above-mentioned rail transit four-track protection device, wherein, guard plates perpendicular to the bottom plate are respectively provided on both side edges of the bottom plate and the vertical plate, the guard plates and the rib plates are located on the same side of the vertical plate, the top ends of the two guard plates and the vertical plates are fixedly connected to the horizontal top plate, and the width of the guard plates is not greater than the width of the rib plates.

[0013] The above-mentioned rail transit four-track protection device, wherein the protection cover includes an upper protection cover and a lower protection cover, the cross-section of the upper protection cover is L-shaped, the upper protection cover includes a top cover and a side cover, the top cover extends from the top of the top plate and covers the support part, the top cover is screwed to the top plate, and the side cover is screwed to the vertical plate; the lower protection cover is arranged below the side cover, the lower protection cover is a corrugated plate, the corrugations on the lower protection cover extend in the horizontal direction, and the lower protection cover is screwed to the vertical plate.

[0014] The above-mentioned rail transit four-track protection device, wherein the front part of the top cover is provided with a downwardly curved arc; the bottom of the side cover is provided with an outward and downward folded edge, and the bottom end of the folded edge is not higher than the top end of the lower protection cover.

[0015] The above-mentioned rail transit four-track protection device, wherein the support frame includes a vertical frame body, and the upper and lower ends of the frame body are respectively provided with protrusions on the side of the vertical plate away from the support, and the lower support block and the upper support block are respectively provided with bosses corresponding to the corresponding protrusions of the frame body, the space between the protrusion at the lower end of the frame body and the boss of the lower support block is the lower rail channel, and the space between the protrusion at the upper end of the frame body and the boss of the upper support block is the upper rail channel.

[0016] The above-mentioned rail transit four-track protection device, wherein the size and structure of the protrusion and the boss are the same, the cross-section of the protrusion is trapezoidal, and grooves are provided on both side waists of the protrusion and the boss, and nylon sliders are clamped in the grooves, and the outer surface of the nylon slider is higher than the side waist surface of the corresponding protrusion or boss.

[0017] In the above-mentioned rail transit four-track protection device, the frame body is provided with an umbrella skirt, which is in a C-shaped groove and transversely surrounds the outer surface of the frame body on the side away from the vertical plate, and the umbrella skirt includes multiple.

[0018] In the above-mentioned rail transit four-track protection device, a plurality of the umbrella skirts are horizontally arranged at equal intervals along the up-and-down direction of the frame body.

[0019] In summary, the beneficial technical effects of the utility model are:

[0020] The utility model arranges and fixes the upper support block, the support frame and the lower support block from top to bottom along the vertical plate of the support at intervals, an upper rail channel for embedding the conductive rail is formed between the upper support block and the top of the support frame, a lower rail channel for embedding the return rail is formed between the lower support block and the bottom of the support frame, a protective cover is provided on the side of the support away from the support part and the top of the support, and a support is fixed at both ends of the protective cover along the length direction. The upper rail channel and the lower rail channel of the protective device require fewer parts, are easy to adjust, have high installation accuracy, are simple to debug and maintain, and reduce production costs and installation costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the utility model;

[0022] Figure 2 yes Figure 1 Side view of

[0023] Figure 3 yes Figure 2 A magnified view of part A;

[0024] Figure 4 yes Figure 1 Schematic diagram of the structure with the protective cover removed;

[0025] Figure 5 It is a schematic diagram of the connection structure of the support, the support part and the protective cover of the utility model;

[0026] Figure 6 It is a structural schematic diagram of the support of the utility model;

[0027] Figure 7 It is a front view of the support frame of the utility model.

[0028] As shown in the figure, 1. support; 11. bottom plate; 111. mounting hole; 12. vertical plate; 121. rib plate; 122. operating port; 13. vertical plate; 14. guard plate; 15. top plate; 2. support part; 21. upper support block; 22. support frame; 221. frame body; 2211. protrusion; 2212. umbrella skirt; 23. lower support block; 24. upper rail channel; 25. lower rail channel; 3. protective cover; 31. upper protective cover; 311. top cover; 312. side cover; 3121. folded edge; 32. lower protective cover; 4. boss; 5. nylon slider; 6. anti-slip pattern; 7. conductive rail; 8. return rail. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-7 The utility model is described in further detail.

[0030] like Figure 1-4 As shown, a rail transit four-track protection device includes a support 1, a support part 2 and a protective cover 3. The support part 2 includes an upper support block 21, a strip-shaped support frame 22 and a lower support block 23. The upper support block 21, the support frame 22 and the lower support block 23 are arranged at intervals from top to bottom along the vertical plate 13 of the support 1 and fixed on the vertical plate 13 of the support 1. An upper rail channel 24 for embedding the conductive rail 7 is formed between the upper support block 21 and the top of the support frame 22. A lower rail channel 25 for embedding the return rail 8 is formed between the lower support block 23 and the bottom of the support frame 22. A protective cover 3 is provided on the side of the support 1 away from the support part 2 and on the top of the support 1. The two ends of the protective cover 3 along the length direction are respectively fixed to a support 1.

[0031] By fixing the upper support block 21, the support frame 22 and the lower support block 23 from top to bottom on one side of the support 1, the distance between the upper rail channel 24 and the lower rail channel 25 can be quickly installed and debugged, and the conductive rail 7 can be accurately installed in the upper rail channel 24, and the return rail 8 can be installed in the lower rail channel 25. The support part 2 has fewer components and is easy to adjust, which reduces the production cost and installation cost.

[0032] like Figure 5 , 6As shown, the support 1 of this embodiment is L-shaped, and the support 1 includes a horizontal bottom plate 11 and a vertical upright plate 12. Two vertical ribs 121 are provided on the inner side of the upright plate 12. The ends of the two ribs 121 are fixedly connected to the vertical plate 13. The vertical plate 13 and the upright plate 12 are connected by two parallel ribs 121, which improves the connection strength of the vertical plate 13 on the support 1. Waist-shaped bolt holes (not shown in the figure) are provided on the vertical plate 13, and the bolt holes extend in the up-down direction. By setting the bolt holes, when installing the upper support block 21, the support frame 22 and the lower support block 23, adjustments can be made in the up-down direction, and the spacing between the upper rail channel 24 and the lower rail channel 25 can be adjusted more quickly and accurately to meet the accuracy requirements for installing the conductive rail 7 and the return rail 8. An operating opening 122 is provided on the vertical plate 12, which is opposite to the riser 13 and is used to install bolts. By providing the operating opening 122 on the vertical plate 12, the upper support block 21, the support frame 22 and the lower support block 23 connected to the vertical plate 13 can be conveniently installed with bolts. The riser 13 is parallel to the vertical plate 12, and the lower parts of the two ribs 121 extend downward to the bottom plate 11. The bottom plate 11 is provided with a waist-shaped installation hole 111, which is convenient for the installation and fixation of the support 1.

[0033] Guard plates 14 perpendicular to the bottom plate 11 are respectively provided on both side edges of the bottom plate 11. The guard plates 14 and the ribs 121 are located on the same side of the vertical plate 12. The provision of the guard plates 14 increases the force on the support 1. The top ends of the two guard plates 14 and the vertical plate 12 are fixedly connected to a horizontal top plate 15. The width of the guard plates 14 is not greater than the width of the ribs 121. This can avoid interference with the guard plates 14 when installing the conductive rails 7 and the return rails 8.

[0034] like Figure 2-4 As shown, the support frame 22 includes a vertical frame body 221, and the upper and lower ends of the frame body 221 are respectively provided with protrusions 2211 on the side of the vertical plate 13 away from the support 1, and the lower support block 23 and the upper support block 21 are respectively provided with bosses 4 corresponding to the corresponding protrusions 2211 of the frame body 221, and the space between the protrusion 2211 at the lower end of the frame body 221 and the boss 4 of the lower support block 23 is the lower rail channel 25, and the space between the protrusion 2211 at the upper end of the frame body 221 and the boss 4 of the upper support block 21 is the upper rail channel 24.

[0035] The size and structure of the protrusion 2211 and the boss 4 of this embodiment are the same. The cross-section of the protrusion 2211 is trapezoidal. Grooves are provided on both sides of the waist of the protrusion 2211 and the boss 4. Nylon sliders 5 are clamped in the grooves. The outer surface of the nylon slider 5 is higher than the side waist surface of the corresponding protrusion 2211 or the boss 4.

[0036] By arranging nylon sliders 5 on both sides of the protrusion 2211 or the boss 4, the conductive rail 7 and the return rail 8 are overlapped on the corresponding nylon sliders 5 of the protrusion 2211 or the boss 4. When the external temperature environment changes, the conductive rail 7 and the return rail 8 will be displaced along the line direction due to thermal expansion and contraction. The nylon sliders 5 can reduce the sliding resistance of the conductive rail 7 or the return rail 8 on the protrusion 2211 and the corresponding boss 4, thereby protecting the stable operation of the device.

[0037] In order to improve the stability of the upper support block 21, the support frame 22 and the lower support block 23 when they are connected to the vertical plate 13, an anti-slip groove 6 is provided on the side of the vertical plate 13 close to the support part 2, and the upper support block 21, the support frame 22 and the lower support block 23 are also provided with corresponding anti-slip grooves 6 on the side close to the vertical plate 13. The anti-slip grooves 6 of the support frame 22 are arranged on the frame body 221, and the anti-slip grooves 6 include multiple strips and are horizontally arranged at equal intervals in the up and down directions.

[0038] The anti-skid grooves 6 on the frame body 221 are staggered and clamped with the anti-skid grooves 6 on the vertical plate 13, and are connected by bolts, which improves the firmness and stability of the clamping of the support frame 22 and the vertical plate 13 in the vertical direction. The upper support block 21 and the lower support block 23 are staggered and clamped with the vertical plate 13 through the anti-skid grooves 6, and are fixedly connected by bolts, which also improves the firmness and stability of the clamping of the upper support block 21 and the vertical plate 13, and the lower support block 23 and the vertical plate 13 in the vertical direction.

[0039] In order to increase the creepage distance between the lower rail channel 25 and the upper rail channel 24, an umbrella skirt 2212 is provided on the frame body 221. The umbrella skirt 2212 is a C-shaped groove and transversely surrounds the outer surface of the frame body 221 away from the vertical plate 13. The umbrella skirt 2212 includes multiple umbrella skirts 2212, which are arranged at equal intervals in the up and down directions of the frame body 221.

[0040] like Figure 1 , 2 As shown, in order to improve the safety of the conductive rail 7 and the return rail 8 and prevent erosion by external rainwater, etc., a protective cover 3 is provided on the support 1. The protective cover 3 includes an upper protective cover 31 and a lower protective cover 32. The cross section of the upper protective cover 31 is L-shaped. The upper protective cover 31 includes a top cover 311 and a side cover 312. The top cover 311 extends from the top of the top plate 15 and covers the support part 2. The top cover 311 is screwed to the top plate 15, and the side cover 312 is screwed to the vertical plate 12; the lower protective cover 32 is arranged below the side cover 312, the lower protective cover 32 is a corrugated plate, the corrugations of the lower protective cover 32 extend in the horizontal direction, the lower protective cover 32 is screwed to the vertical plate 12, and the lower protective cover 32 adopts a corrugated plate, which can improve the force strength of the lower protective cover 32.

[0041] The front part of the top cover 311 is provided with a downwardly curved arc, which can effectively prevent rainwater from eroding the support part 2, the conductive rail 7 and the return rail 8, and protect the safe operation of the traffic track. The bottom of the side cover 312 is provided with an outward and downward folding edge 3121, and the bottom end of the folding edge 3121 is not higher than the top of the lower protective cover 32. By providing the folding edge 3121 at the lower part of the side cover 312, rainwater can be prevented from entering the lower protective cover 32, so that the protective cover 3 can protect the conductive rail 7 and the return rail 8 on the support 1.

[0042] The support 1, the support part 2 and the protective cover 3 in the utility model are all made of glass fiber reinforced plastic.

[0043] The embodiments of this specific implementation method are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. Therefore, all equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A rail transit four-track protection device, comprising a support, a support part and a protection cover, characterized in that: The support part includes an upper support block, a strip-shaped support frame and a lower support block. The upper support block, the support frame and the lower support block are arranged at intervals from top to bottom along the vertical plate of the support and fixed on the vertical plate of the support. An upper rail channel for embedding a conductive rail is formed between the upper support block and the top of the support frame. A lower rail channel for embedding a return rail is formed between the lower support block and the bottom of the support frame. A protective cover is provided on one side of the support away from the support part and on the top of the support. A support is fixed at each end of the protective cover along the length direction.

2. The rail transit four-track protection device according to claim 1, characterized in that: The support is L-shaped, and includes a horizontal bottom plate and a vertical upright plate. Two vertical ribs are provided on the inner side of the upright plate. The ends of the two ribs are fixedly connected to the vertical plate. The vertical plate is provided with a waist-shaped bolt hole. The bolt hole extends in the up and down direction. The upright plate is provided with an operating port opposite to the vertical plate and used for installing bolts. The vertical plate is parallel to the upright plate. The lower parts of the two ribs extend downward to the bottom plate, and the bottom plate is provided with a waist-shaped installation hole.

3. The rail transit four-track protection device according to claim 2, characterized in that: The vertical plate is provided with anti-skid grooves on one side close to the support part, and the upper support block, support frame and lower support block are also provided with corresponding anti-skid grooves on one side close to the vertical plate. The anti-skid grooves include multiple grooves and are horizontally arranged at equal intervals in the vertical direction.

4. The rail transit four-track protection device according to claim 2, characterized in that: The bottom plate and the vertical plate are provided with guard plates perpendicular to the bottom plate on both sides, respectively. The guard plates and the rib plates are located on the same side of the vertical plate. The top ends of the two guard plates and the vertical plate are fixedly connected to the horizontal top plate. The width of the guard plates is not greater than the width of the rib plates.

5. The rail transit four-track protection device according to claim 4, characterized in that: The protective cover includes an upper protective cover and a lower protective cover. The cross-section of the upper protective cover is L-shaped. The upper protective cover includes a top cover and a side cover. The top cover extends from the top of the top plate and covers the supporting part. The top cover is screwed to the top plate, and the side cover is screwed to the vertical plate. The lower protective cover is arranged below the side cover. The lower protective cover is a corrugated plate. The corrugations on the lower protective cover extend in the horizontal direction. The lower protective cover is screwed to the vertical plate.

6. The rail transit four-track protection device according to claim 5, characterized in that: The front part of the top cover is provided with an arc that bends downwards; the bottom of the side cover is provided with an outward and downward folding edge, and the bottom end of the folding edge is not higher than the top end of the lower protective cover.

7. The rail transit four-track protection device according to claim 1, characterized in that: The support frame includes a vertical frame body, and the upper and lower ends of the frame body are respectively provided with protrusions on one side of the vertical plate away from the support, and the lower support block and the upper support block are respectively provided with bosses corresponding to the corresponding protrusions of the frame body, the space between the protrusion at the lower end of the frame body and the boss of the lower support block is the lower rail channel, and the space between the protrusion at the upper end of the frame body and the boss of the upper support block is the upper rail channel.

8. The rail transit four-track protection device according to claim 7, characterized in that: The size and structure of the bump and the boss are the same. The cross-section of the bump is trapezoidal. Grooves are provided on both sides of the waist of the bump and the boss. Nylon sliders are clamped in the grooves. The outer surface of the nylon slider is higher than the side waist surface of the corresponding bump or boss.

9. The rail transit four-track protection device according to claim 7, characterized in that: The frame body is provided with an umbrella skirt, which is in the form of a C-shaped groove and transversely surrounds the outer surface of the frame body on a side away from the vertical plate. The umbrella skirt includes a plurality of umbrella skirts.

10. The rail transit four-track protection device according to claim 9, characterized in that: The plurality of umbrella skirts are arranged at equal intervals along the up-down direction of the frame body.

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