Cable protection device for rail transit

Abstract

The utility model relates to a cable protection device for rail transit, which comprises a mounting plate and a protection tube, the mounting plate is vertically overturned by 90 degrees, and a support is connected between the protection tube and the mounting plate; the protection pipe is arranged in an arc shape and can be sequentially divided into a first pipeline, a second pipeline and a third pipeline, the first pipeline and the third pipeline are both arranged in an inclined mode, and the first pipeline and the third pipeline are both connected with the two outer side faces, perpendicular to each other, of the installation plate through supports. According to the cable protection device for the rail transit, the first pipeline and the third pipeline are arranged in an inclined mode, the second pipeline is arranged in an arc shape, when a cable penetrates through the protection pipe, the cable is bent in an arc shape, bending stress borne by the cable at the bent position is reduced, and therefore the risk that a wire is broken due to fatigue is reduced; and under the cooperation of the mounting plate and the bracket, the device can be attached to a vertical corner of an object to be fixedly arranged on the object, so that the stability of cable laying is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cable protection, in particular to a cable protection device for rail transit. Background Technique

[0002] One of the main functions of cables for rail transit is power supply transmission. They are responsible for transmitting electrical energy from the power supply station to traction equipment on the line or track, such as trains, motors, and signal systems, to ensure continuous power supply required for the operation of the rail transit system. Without these cables, trains will not be able to obtain sufficient power, and the signal system will not be able to work properly.

[0003] During the cable laying process, due to space limitations, situations where straight laying is not possible may be faced, and the cable needs to be folded to adapt to the geometric shape of the environment and obstacles. Therefore, when facing some obstacles with vertical corners, most workers will fold the cable at a ninety-degree angle to fit the object for laying. The ninety-degree fold will reduce the bending radius of the cable, which may cause excessive bending stress on the wires inside the cable. Subjected to this excessive bending stress for a long time, the wires inside the cable are prone to problems such as fracture and fatigue, as well as signal attenuation and slower transmission speed, thus affecting the electrical conductivity and mechanical strength of the cable.

[0004] Therefore, to solve the above problems, a cable protection device for rail transit is proposed. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a cable protection device for rail transit, which has the advantages of being able to fold the cable in an arc, etc., and solves the problem that the vertical folding of the cable is prone to cause the fracture of the wires inside the cable.

[0006] To achieve the above object, the utility model provides the following technical solution: A cable protection device for rail transit includes a mounting plate and a protection tube. The mounting plate is arranged to be vertically flipped at ninety degrees. A bracket is connected between the protection tube and the mounting plate.

[0007] The protection tube is arranged in an arc shape and can be sequentially divided into a first pipe, a second pipe, and a third pipe. The protection tube is composed of the first pipe, the second pipe, and the third pipe spliced in sequence.

[0008] Both the first pipe and the third pipe are arranged in an inclined shape. Both the first pipe and the third pipe are connected to two outer sides of the mounting plate that are perpendicular to each other through brackets. One ends of the first pipe and the third pipe that are far from the second pipe are close to the mounting plate.

[0009] The second pipe is arranged in an arc shape and corresponds to the outer top corner of the mounting plate. One ends of the first pipe and the third pipe close to the second pipe are both away from the mounting plate.

[0010] Furthermore, a limit block is installed at one end of the inner side wall of the first pipe close to the mounting plate and connected to the second pipe. The limit block is arranged in an arc shape.

[0011] Furthermore, a cover plate is detachably connected to the upper surface of the protective pipe. At least one heat dissipation hole is respectively formed through the cover plate and the bottom plate of the protective pipe.

[0012] Furthermore, lower clamping plates are respectively clamped on the outer walls of the lower ends of the first pipe and the second pipe. The outer side walls of the two lower clamping plates close to the mounting plate are respectively connected to one end faces of the two brackets away from the mounting plate. The first pipe and the second pipe are respectively connected to the two brackets through the two lower clamping plates.

[0013] Furthermore, upper clamping plates are respectively clamped on the upper ends of the first pipe and the second pipe and on the outer wall of the cover plate. The two upper clamping plates respectively correspond to the two lower clamping plates.

[0014] Furthermore, two first threaded holes are respectively and spacedly formed on the upper end faces of the two lower clamping plates. Two second threaded holes are respectively and spacedly formed through the upper surfaces of the two upper clamping plates. The four first threaded holes respectively correspond to the four second threaded holes.

[0015] Furthermore, a bolt is threadedly connected to the first threaded hole. The bolt extends downward into the second threaded hole and is threadedly connected to the second threaded hole.

[0016] Compared with the prior art, the technical solution of the present application has the following beneficial effects:

[0017] For the cable protection device for rail transit, by virtue of the inclined shapes of the first pipe and the third pipe and the arc shape of the second pipe, when the cable penetrates through the protective pipe, the cable is bent into an arc shape, reducing the bending stress on the cable at the bending part, thereby reducing the risk of the wire breaking due to fatigue; with the cooperation of the mounting plate and the brackets, the device can be fixedly installed on an object at a vertical corner of the object, increasing the stability of cable laying. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional schematic diagram of the overall installation structure of the present utility model;

[0019] Figure 2 is a three-dimensional schematic diagram of the installation and disassembly structure of the bolt and the upper clamping plate of the present utility model;

[0020] Figure 3 is a top view sectional schematic diagram of the overall installation structure of the present utility model.

[0021] In the figure: 1. mounting plate; 2. protective pipe; 21. first pipe; 22. second pipe; 23. third pipe; 3. bracket; 4. cover plate; 41. heat dissipation holes; 5. lower clamping plate; 51. first threaded hole; 52. upper clamping plate; 53. second threaded hole; 54. bolt; 6. limit block. Specific implementation mode

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0023] Please refer to Figures 1-3 , a cable protection device for rail transit in this embodiment, which utilizes the inclined shape of the first pipe 21 and the third pipe 23 and the arc shape of the second pipe 22. When the cable penetrates through the protective pipe 2, the cable is bent in an arc shape, reducing the bending stress on the cable at the bending point, thereby reducing the risk of wire breakage due to fatigue; with the cooperation of the mounting plate 1 and the bracket 3, the device can be fixedly installed on the object at the vertical corner of the object, increasing the stability of cable laying.

[0024] Specifically, a cable protection device for rail transit in this embodiment includes a mounting plate 1 and a protective pipe 2. The mounting plate 1 is arranged in a ninety-degree vertical flip, and a bracket 3 is connected between the protective pipe 2 and the mounting plate 1;

[0025] The protective pipe 2 is arranged in an arc shape and can be sequentially divided into a first pipe 21, a second pipe 22, and a third pipe 23. The protective pipe 2 is composed of the first pipe 21, the second pipe 22, and the third pipe 23 spliced in sequence;

[0026] Both the first pipe 21 and the third pipe 23 are arranged in an inclined shape. Both the first pipe 21 and the third pipe 23 are connected to the two outer sides of the mounting plate 1 that are perpendicular to each other through the bracket 3; the ends of the first pipe 21 and the third pipe 23 that are far from the second pipe 22 are close to the mounting plate 1;

[0027] The second pipe 22 is arranged in an arc shape and corresponds to the outer top angle of the mounting plate 1. The ends of the first pipe 21 and the third pipe 23 close to the second pipe 22 are far from the mounting plate 1.

[0028] During actual use, the staff inserts the cable into the protective pipe 2 from the end of the first pipe 21 far away from the second pipe 22, and it passes through the protective pipe 2 and extends out from the end of the third pipe 23 far away from the second pipe 22. When the cable passes through the protective pipe 2, it can be bent in an arc shape, reducing the bending stress on the wire at the bending point. Since both ends of the first pipe 21 and the third pipe 23 close to the second pipe 22 are far away from the mounting plate 1, and the second pipe 22 is arranged in an arc shape, when the cable passes through the second pipe 22, the bending arc can be larger, further reducing the extrusion and stress concentration on the cable. After the cable passes through the protective pipe 2, the mounting plate 1 is attached to the vertical corner of the object. Thus, the cable can be fixed to the object, increasing the stability of the cable laying.

[0029] A limiting block 6 is installed at one end of the inner side wall of the first pipe 21 close to the mounting plate 1 and connected to the second pipe 22. The limiting block 6 is arranged in an arc shape.

[0030] Through the limiting block 6, the angle at which the cable enters the second pipe 22 can be changed, further increasing the bending arc of the cable.

[0031] A cover plate 4 is detachably connected to the upper surface of the protective pipe 2. At least one heat dissipation hole 41 is penetrated through both the cover plate 4 and the bottom plate of the protective pipe 2. Through the cover plate 4, it is more convenient to inspect and repair the bending part of the cable.

[0032] Lower clamping plates 5 are clamped on the outer walls of the lower ends of the first pipe 21 and the second pipe 22. The outer side walls of the two lower clamping plates 5 close to the mounting plate 1 are respectively connected to the end faces of the two brackets 3 far away from the mounting plate 1. The first pipe 21 and the second pipe 22 are respectively connected to the two brackets 3 through the two lower clamping plates 5.

[0033] Upper clamping plates 52 are clamped on the upper ends of the first pipe 21 and the second pipe 22 and on the outer walls of the cover plate 4. The two upper clamping plates 52 correspond to the two lower clamping plates 5 respectively.

[0034] Two first threaded holes 51 are spaced apart on the upper end faces of the two lower clamping plates 5. Two second threaded holes 53 are penetrated through the upper surfaces of the two upper clamping plates 52 at intervals. The four first threaded holes 51 and the four second threaded holes 53 correspond to each other respectively.

[0035] A bolt 54 is threadedly connected to the first threaded hole 51, and the bolt 54 extends downward into the second threaded hole 53 and is threadedly connected to the second threaded hole 53.

[0036] By threadedly connecting the bolt 54 to the first threaded hole 51 and the second threaded hole 53, the protective pipe 2 and the cover plate 4 can be better clamped between the upper clamping plate 52 and the lower clamping plate 5, increasing the stability of the cable placed in the protective pipe 2.

[0037] The working principle of the above embodiments is as follows:

[0038] The staff inserts the cable into the protection tube 2 from one end of the first pipe 21 far away from the second pipe 22, and the cable passes through the protection tube 2 and extends out from one end of the third pipe 23 far away from the second pipe 22. When the cable passes through the protection tube 2, it can be bent in an arc shape, reducing the bending stress on the wire at the bending point. Then the staff covers the cover plate 4 on the upper surface of the protection tube 2, and then clamps the two upper clamping plates 52 on the protection tube 2 corresponding to the two lower clamping plates 5. Then, four bolts 54 are respectively threadedly connected to the four first threaded holes 51 and the four second threaded holes 53 to fix the cable in the protection tube 2. Finally, the staff fits and installs the mounting plate 1 at the vertical corner of the object. Thus, the cable can be fixed on the object, increasing the stability of cable laying. While the device bends the cable, it reduces the bending stress on the cable at the bending point, thereby reducing the risk of wire breakage due to fatigue.

[0039] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cable protection device for rail transit, comprising a mounting plate (1) and a protection tube (2), characterized in that: The mounting plate (1) is arranged to be vertically flipped by 90 degrees, and a bracket (3) is connected between the protective pipe (2) and the mounting plate (1); The protective pipe (2) is arranged in an arc shape and can be sequentially divided into a first pipe (21), a second pipe (22) and a third pipe (23), and the protective pipe (2) is composed of the first pipe (21), the second pipe (22) and the third pipe (23) spliced in sequence; Both the first pipe (21) and the third pipe (23) are arranged in an inclined shape, and both the first pipe (21) and the third pipe (23) are connected to two outer sides perpendicular to the mounting plate (1) through the bracket (3); One end of each of the first pipe (21) and the third pipe (23) far from the second pipe (22) is close to the mounting plate (1); The second pipe (22) is arranged in an arc shape and corresponds to the outer top corner of the mounting plate (1), and one end of each of the first pipe (21) and the third pipe (23) close to the second pipe (22) is far from the mounting plate (1).

2. The cable protection device for rail transit according to claim 1, wherein: A limiting block (6) is installed at one end of the inner side wall of the first pipe (21) close to the mounting plate (1) and connected to the second pipe (22), and the limiting block (6) is arranged in an arc shape.

3. The cable protection device for rail transit according to claim 1, characterized in that: A cover plate (4) is detachably connected to the upper surface of the protective pipe (2), and at least one heat dissipation hole (41) is formed through the cover plate (4) and the bottom plate of the protective pipe (2).

4. A cable protection device for rail transit according to claim 1, characterized in that: Lower clamping plates (5) are clamped on the outer walls of the lower ends of the first pipe (21) and the second pipe (22), and the outer side walls of the two lower clamping plates (5) close to the mounting plate (1) are respectively connected to one end surface of the two brackets (3) far from the mounting plate (1), and the first pipe (21) and the second pipe (22) are respectively connected to the two brackets (3) through the two lower clamping plates (5).

5. The cable protection device for rail transit according to claim 4, characterized in that: Upper clamping plates (52) are clamped on the upper ends of the first pipe (21) and the second pipe (22) and the outer wall of the cover plate (4), and the two upper clamping plates (52) respectively correspond to the two lower clamping plates (5).

6. The cable protection device for rail transit according to claim 5, wherein: Two first threaded holes (51) are spaced apart on the upper end surfaces of the two lower clamping plates (5), and two second threaded holes (53) are respectively and sequentially formed through the upper surfaces of the two upper clamping plates (52), and the four first threaded holes (51) respectively correspond to the four second threaded holes (53).

7. The cable protection device for rail transit according to claim 6, characterized in that: A bolt (54) is threadedly connected to the first threaded hole (51), and the bolt (54) extends downward into the second threaded hole (53) and is threadedly connected to the second threaded hole (53).

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