Leaky cable protection structure

Abstract

The utility model provides a leaky coaxial cable protection structure. The leaky cable protection structure comprises a plurality of protection covers, each protection cover comprises a U-shaped laying part and two first connecting parts which are connected, the U-shaped laying part is provided with a laying space, the inner wall surface and / or the outer wall surface of the U-shaped laying part is provided with a reinforcing structure, and the reinforcing structure extends along the length direction of the protection cover; each mounting seat is located at the bottom of the corresponding protective cover, every two adjacent protective covers are connected through one mounting seat, each mounting seat comprises a second connecting part and a mounting part, the second connecting parts are mounted on the mounting parts, and the second connecting parts are movably arranged in the vertical direction relative to the mounting parts; the second connection portion is configured to be connected with the first connection portion. According to the technical scheme, the leaky coaxial cable protection structure can solve the problems that an existing leaky coaxial cable laying device is difficult to bear vibration and impact loads generated in the train running process, and the leaky coaxial cable protection performance is poor.

Description

Technical Field

[0001] The utility model relates to the technical field of leaky cable installation, in particular to a leaky cable protection structure. Background Art

[0002] With the rapid development of the national economy, major provincial capital cities in China are embarking on vigorously developing and building urban rail transit. The rapid development of urban rail transit has made more and more applications put forward higher requirements for wireless communication systems. Leaky coaxial cable, also known as leaky cable, is a special coaxial cable with periodic slots on its outer conductor. It is a general term for coaxial cables with dual functions of feeder and antenna, and has both the transmission function and transceiver function of wireless radio frequency signals. Therefore, leaky cable is the best choice for achieving wireless signal coverage of radio waves in the field of urban rail transit. At present, when laying leaky cables in the tunnel of the wireless communication system of urban rail transit, it is generally adopted to install leaky cable fixtures on the tunnel wall to support and install the leaky cables. The leaky cable fixtures have different installation heights in different wireless communication systems. Generally speaking, the installation height is about 1.5m to 5.0m from the rail surface, and the upper and lower spacing between adjacent leaky cables is greater than 50cm to avoid mutual interference between leaky cables.

[0003] In urban rail transit, in order to ensure the signal stability of the public wireless communication system in the moving carriage, the leaky cable is generally laid beside the track along the train running direction, thereby shortening the distance for collecting and receiving signals in the carriage. However, the existing leaky cable laying device is difficult to withstand the vibration and impact loads generated during the operation of the train, and the protection performance of the leaky cable is poor. Utility Model Content

[0004] The main purpose of the utility model is to provide a leaky cable protection structure, which can solve the problem that the existing leaky cable laying device is difficult to withstand the vibration and impact loads generated during the operation of the train and has poor protection performance for the leaky cable.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a leaky cable protection structure, comprising: a plurality of protective covers, each protective cover comprising a connected U-shaped laying portion and two first connecting portions, the two first connecting portions being relatively arranged at the bottom of the U-shaped laying portion, one end of each first connecting portion being connected to the U-shaped laying portion, and the other end of each first connecting portion extending in a direction away from the U-shaped laying portion, the U-shaped laying portion having a laying space, the inner wall surface and / or the outer wall surface of the U-shaped laying portion being provided with a reinforcement structure, and the reinforcement structure extending along the length direction of the protective cover; and at least one mounting seat, each mounting seat being located at the bottom of the protective cover, two adjacent protective covers being connected by a mounting seat, each mounting seat comprising a second connecting portion and a mounting portion, the second connecting portion being installed on the mounting portion, the second connecting portion being movably arranged in a vertical direction relative to the mounting portion, and the second connecting portion being constructed to be connected to the first connecting portion.

[0006] Furthermore, the reinforcing structure includes reinforcing ribs, which extend along the length direction of the protective cover, and the ratio a of the thickness of the reinforcing ribs to the thickness of the protective cover is in the range of 1 / 3≤a≤2 / 5; and / or, there are multiple reinforcing ribs, which are arranged circumferentially along the protective cover.

[0007] Further, the outer periphery of the mounting seat is coated with a protective layer; and / or the outer periphery of the mounting seat is coated with an anti-rust layer.

[0008] Furthermore, the leaky cable protection structure also includes an anti-drooping structure, which is installed on the protection cover and is constructed to fix the leaky cable.

[0009] Furthermore, the anti-sagging structure includes a binding belt, and a binding structure is arranged on the side wall of the protective cover. Both ends of the binding belt are bound to the binding structure to form a limiting space, and the leaky cable is located in the limiting space.

[0010] Furthermore, the leaky cable protection structure also includes a clamp, which has a locked state locked on the leaky cable and an unlocked state detached from the leaky cable. The clamp includes an installation body and a locking structure. The installation body is installed on the first connecting part. The first end of the locking structure is hinged to the installation body, and the second end of the locking structure is constructed to be able to lock and cooperate with or disengage from the installation body so that the clamp can switch between the locked state and the unlocked state.

[0011] Furthermore, a first elastic limiting structure is provided on a side of the installation body facing the leaky cable, and when the clamp is in a locked state, the leaky cable elastically abuts against the first elastic limiting structure.

[0012] Furthermore, the first elastic limiting structure comprises at least two first elastic pieces, and a side of each first elastic piece facing the leaky cable is an arc surface, and the arc surface is adapted to the leaky cable.

[0013] Furthermore, a second elastic limiting structure is provided on the side of the locking structure facing the leaky cable, and the second elastic limiting structure is located above the first elastic limiting structure. When the fixture is in a locked state, the first elastic limiting structure and the second elastic limiting structure both elastically abut against the leaky cable.

[0014] Furthermore, the second elastic limiting structure includes a hollow area and a plurality of second elastic sheets, and the plurality of second elastic sheets are all arranged at the opening end of the hollow area.

[0015] By applying the technical solution of the utility model, a reinforcing structure is provided on the inner wall surface and / or outer wall surface of the U-shaped laying part of the protective cover, so that the structural strength of the protective cover can be enhanced, so that the protective cover can withstand the vibration and impact loads generated during the operation of the train, thereby improving the protective performance of the protective cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0017] Figure 1 A schematic structural diagram of a leaky cable protection structure according to an embodiment of the utility model is shown;

[0018] Figure 2 A schematic structural diagram showing another angle of the leaky cable protection structure of an embodiment of the utility model;

[0019] Figure 3 A partial structural schematic diagram of a leaky cable protection structure of an embodiment of the utility model is shown;

[0020] Figure 4 A partial structural schematic diagram of a leaky cable protection structure of an embodiment of the utility model is shown;

[0021] Figure 5 A partial structural schematic diagram of a leaky cable protection structure of an embodiment of the utility model is shown;

[0022] Figure 6 Shows Figure 5 Enlarged view of point A.

[0023] The above drawings include the following reference numerals:

[0024] 10. Protective cover; 11. U-shaped laying part; 12. First connecting part; 13. Waist hole; 14. Through hole; 20. Mounting seat; 21. Second connecting part; 22. Mounting part; 30. Reinforcement structure; 40. Clamp; 41. Mounting body; 42. Locking structure; 43. First spring piece; 44. Second elastic limiting structure; 45. Second spring piece; 46. Hollow area; 50. Screw; 70. Anchor bolt; 80. Leaky cable. DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] See also Figures 1 to 4As shown, the utility model provides a leaky cable protection structure, which includes: a plurality of protective covers 10, each protective cover 10 includes a U-shaped laying portion 11 and two first connecting portions 12 connected to each other, the two first connecting portions 12 are relatively arranged at the bottom of the U-shaped laying portion 11, one end of each first connecting portion 12 is connected to the U-shaped laying portion 11, and the other end of each first connecting portion 12 extends in a direction away from the U-shaped laying portion 11, the U-shaped laying portion 11 has a laying space, and the inner wall surface and / or The outer wall surface is provided with a reinforcing structure 30, which extends along the length direction of the protective cover 10; and at least one mounting seat 20, each mounting seat 20 is located at the bottom of the protective cover 10, and two adjacent protective covers 10 are connected by a mounting seat 20, and each mounting seat 20 includes a second connecting portion 21 and a mounting portion 22, the second connecting portion 21 is installed on the mounting portion 22, and the second connecting portion 21 is movably arranged in a vertical direction relative to the mounting portion 22, and the second connecting portion 21 is constructed to be connected to the first connecting portion 12.

[0027] In this embodiment, the laying space is used to lay the leaky cable 80, and the mounting seat 20 is installed on the track through the mounting portion 22. Since the first connecting portion 12 of the protective cover 10 is connected to the second connecting portion 21 of the mounting seat 20, and the second connecting portion 21 can move in the vertical direction relative to the mounting portion 22, the protective cover 10 can move in the vertical direction relative to the mounting seat 20 with the second connecting portion 21, so as to achieve height adjustment of the mounting seat 20 and the protective cover 10 to adapt to leaky cables 80 of different heights, and at the same time, it can meet the uniform height installation of the leaky cable protection structure on the civil engineering foundation. The inner wall surface and / or outer wall surface of the U-shaped laying portion 11 of the protective cover 10 is provided with a reinforcing structure 30, which can enhance the structural strength of the protective cover 10, so that the protective cover 10 can withstand the vibration and impact loads generated during the operation of the train, thereby improving the protection performance of the protective cover 10.

[0028] In one embodiment of the present invention, the thickness of the protective cover 10 ranges from 0.1 mm to 5 mm, and the length of the protective cover 10 ranges from 1 m to 10 m.

[0029] In this embodiment, the thickness range of the protective cover 10 is 0.1mm~5mm, which can ensure the structural strength of the protective cover 10. In addition, if the length of the protective cover 10 is too long, it cannot be used in the project. Therefore, the length range of the protective cover 10 is 1m~10m to ensure that the protective cover 10 can be normally used in the project.

[0030] See also Figures 1 to 4As shown, in one embodiment of the utility model, a waist hole 13 is provided on each of the two first connecting parts 12 of the protective cover 10, and four through holes are provided on the second connecting part 21. For two adjacent protective covers 10, two of the through holes are provided in a one-to-one correspondence with the two waist holes 13 on one protective cover 10, and the remaining two through holes are provided in a one-to-one correspondence with the two waist holes 13 on the other protective cover 10, so that the screws 50 (such as M8 screws, M6 screws, etc.) are sequentially passed through the waist holes 13 and the through holes on the second connecting part 21, thereby realizing the connection between the protective cover 10 and the mounting base 20.

[0031] In one embodiment of the present invention, the reinforcing structure 30 includes reinforcing ribs extending along the length direction of the protective cover 10 , and a ratio a of the thickness of the reinforcing ribs to the thickness of the protective cover 10 is in the range of 1 / 3≤a≤2 / 5.

[0032] Through the above arrangement, while enhancing the structural strength of the protective cover 10, it is also possible to avoid the reinforcing ribs being too thick, which would lead to an increase in production costs.

[0033] In an embodiment of the present invention, there are multiple reinforcing ribs, and the multiple reinforcing ribs are arranged along the circumference of the protective cover 10 .

[0034] Through the above arrangement, the structural strength of the protective cover 10 can be enhanced and the structural strength of the protective cover 10 can be made more uniform.

[0035] In one embodiment of the present invention, the outer periphery of the mounting seat 20 is covered with a protective layer.

[0036] Through the above arrangement, the mounting seat 20 can be protected and the service life of the mounting seat 20 can be extended.

[0037] Specifically, the protective layer can be a plastic film or a polyester composite tape.

[0038] In one embodiment of the present invention, the outer periphery of the mounting seat 20 is coated with an anti-rust layer.

[0039] Through the above arrangement, the anti-corrosion performance of the mounting seat 20 can be improved, thereby extending the service life of the mounting seat 20.

[0040] Specifically, the anti-rust layer can be formed by spraying anti-rust paint, or by performing plastic spraying.

[0041] In one embodiment, the mounting seat 20 is made of metal materials, including aluminum, copper, iron and other alloy materials (such as aluminum-magnesium alloys, etc.), which are high in strength and easy to process. The thickness of the mounting seat 20 is in the range of 0.1 mm to 5 mm, which can ensure the structural strength and avoid the problem of difficulty in installation due to the excessive weight of the mounting seat 20.

[0042] like Figure 5 and Figure 6 As shown, in one embodiment of the utility model, at least two through holes 14 are provided on the U-shaped laying portion 11 of the protective cover 10, and the at least two through holes 14 are arranged at intervals along the first direction and correspondingly arranged, and the two ends of the plastic cable tie can be respectively passed through the through holes 14 on the side and then tied to the U-shaped laying portion 11 to fix the leaky cable 80 and prevent the leaky cable 80 from sagging due to being too long.

[0043] In an embodiment of the present invention, the leaky cable protection structure further includes an anti-drooping structure, which is installed on the protection cover 10 and is configured to fix the leaky cable 80 .

[0044] In this embodiment, the anti-drooping structure can tighten and fix the leaky cable 80 in the laying space to prevent the leaky cable 80 from sagging.

[0045] See also Figures 1 to 4 As shown, in one embodiment of the utility model, the anti-sagging structure includes a binding belt, and a binding structure is provided on the side wall of the protective cover 10. Both ends of the binding belt are bound to the binding structure to form a limiting space, and the leaky cable 80 is located in the limiting space.

[0046] In this embodiment, the binding belt is wound around the outer circumference of the leaky cable 80, and both ends of the binding belt are bound to the binding structure to limit the leaky cable 80 and prevent the leaky cable 80 from sagging.

[0047] In one embodiment, the binding structure is a bracket structure, and both ends of the binding belt can be bound to the bracket structure.

[0048] See also Figures 1 to 4 As shown, in one embodiment of the utility model, the leaky cable protection structure also includes a clamp 40, the clamp 40 has a locked state locked on the leaky cable 80 and an unlocked state detached from the leaky cable 80, the clamp 40 includes an installation body 41 and a locking structure 42, the installation body 41 is installed on the first connecting part 12, the first end of the locking structure 42 is hinged to the installation body 41, and the second end of the locking structure 42 is constructed to be able to lock and cooperate with or disengage from the installation body 41, so that the clamp 40 can switch between the locked state and the unlocked state.

[0049] In this embodiment, when the second end of the locking structure 42 is locked with the installation body 41, the clamp 40 is in a locked state, at which time the clamp 40 is connected to the leaky cable 80; when the second end of the locking structure 42 is disengaged from the installation body 41, the clamp 40 is in an unlocked state, at which time the clamp 40 can be detached from the leaky cable 80.

[0050] See also Figures 1 to 4As shown, in one embodiment of the present invention, a first elastic limiting structure is provided on the side of the installation body 41 facing the leaky cable 80, and when the clamp 40 is in a locked state, the leaky cable 80 elastically abuts against the first elastic limiting structure.

[0051] Through the above arrangement, the first elastic limiting structure is located below the leaky cable 80, and cooperates with the locking structure 42, which can not only realize the clamping and fixing of the leaky cable 80, but also prevent the leaky cable 80 from being damaged due to the rigid contact between the clamp 40 and the leaky cable 80 when the leaky cable 80 swings to a large extent under the action of external force.

[0052] See also Figures 1 to 4 As shown, in one embodiment of the present invention, the first elastic limiting structure includes at least two first elastic pieces 43 , and the side of each first elastic piece 43 facing the leaky cable 80 is an arc surface, and the arc surface is adapted to the leaky cable 80 .

[0053] The above arrangement can avoid the problem that the first elastic piece 43 damages the outer wall of the leaky cable 80 when the clamp 40 is in a locked state due to mismatch of the contact surface, and can also enhance the connection stability between the clamp 40 and the leaky cable 80.

[0054] See also Figures 1 to 4 As shown, in one embodiment of the utility model, a second elastic limiting structure 44 is provided on the side of the locking structure 42 facing the leaky cable 80, and the second elastic limiting structure 44 is located above the first elastic limiting structure. When the clamp 40 is in a locked state, the first elastic limiting structure and the second elastic limiting structure 44 are both elastically abutted against the leaky cable 80.

[0055] In this embodiment, when the clamp 40 is in a locked state, the second elastic limiting structure 44 elastically abuts against the top of the leaky cable 80, and the first elastic limiting structure elastically abuts against the bottom of the leaky cable 80, which can prevent the leaky cable 80 from being damaged due to the rigid contact between the clamp 40 and the leaky cable 80 when the leaky cable 80 swings significantly under the action of external force.

[0056] See also Figures 1 to 4 As shown, in one embodiment of the present invention, the second elastic limiting structure 44 includes a hollow area 46 and a plurality of second elastic sheets 45 , and the plurality of second elastic sheets 45 are all arranged at the opening end of the hollow area 46 .

[0057] In the present embodiment, the hollow area 46 is provided to provide a deformation space for the second spring piece 45, and the side of the second spring piece 45 facing the leaky cable 80 is an arc surface, which is adapted to the leaky cable 80. This can avoid the problem of damage to the outer wall of the leaky cable 80 when the clamp 40 is in a locked state due to incompatibility of the contact surface, and can also enhance the connection stability between the clamp 40 and the leaky cable 80.

[0058] See also Figures 1 to 4 As shown, in one embodiment of the utility model, the leakage cable protection structure further includes an anchor bolt 70, and a through hole is provided on the mounting portion 22, and the anchor bolt 70 is inserted into the through hole on the mounting portion 22. A through hole is provided on the first connecting portion 12, and a bolt is provided at the bottom of the clamp 40, and the bolt is inserted into the through hole on the first connecting portion 12, and the clamp 40 is installed on the mounting seat 20 by locking with a nut.

[0059] It should be noted that the size of the through hole on the mounting portion 22 can be set according to actual needs, for example, it can be set to a through hole that allows M8, M10, or M12 anchor bolts 70 to pass through.

[0060] In one embodiment, the material of the protective cover 10 is mainly composed of glass fiber knitted felt, o-phthalic unsaturated polyester, 4,4'-diaminodiphenylmethane and tetrabromobisphenol A. 4,4'-diaminodiphenylmethane is mixed with o-phthalic unsaturated polyester and heated at 90°C. In this process, the carboxyl group of the polyester and the amino group in 4,4'-diaminodiphenylmethane undergo amidation reaction to form an amide bond. In this way, 4,4'-diaminodiphenylmethane containing an amide bond is introduced into the polyester chain to form part of the color-changing group. In this way, the presence of 4,4'-diaminodiphenylmethane gives the polyester molecular chain a mechanochromic property. When subjected to external force, 4,4'-diaminodiphenylmethane undergoes a conformational change, resulting in a change in the interaction between molecules. This change can cause the color of the polymer to change, thereby realizing real-time display of the stress state of the protective cover 10.

[0061] The protective cover 10 is mainly made by pultrusion, and the glass fiber knitted felt is fully impregnated with glue under the traction of the pultrusion equipment, reasonably guided by a series of pre-formed templates, and initially shaped, and finally enters a metal mold heated at 150°C for curing, so that a continuous, smooth, dimensionally stable, and extremely strong protective cover 10 can be obtained. The performance of the protective cover 10 is shown in Table 1.

[0062] Table 1

[0063]

[0064] From the above description, it can be seen that the above-mentioned embodiments of the utility model achieve the following technical effects: by arranging a reinforcing structure on the inner wall surface and / or outer wall surface of the U-shaped laying portion of the protective cover, the structural strength of the protective cover can be enhanced, so that the protective cover can withstand the vibration and impact loads generated during the operation of the train, thereby improving the protective performance of the protective cover.

[0065] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0066] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0067] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A leaky cable protection structure, characterized in that: include: A plurality of protective covers (10), each of the protective covers (10) comprising a U-shaped laying portion (11) and two first connecting portions (12) connected to each other, the two first connecting portions (12) being arranged opposite to each other at the bottom of the U-shaped laying portion (11), one end of each of the first connecting portions (12) being connected to the U-shaped laying portion (11), the other end of each of the first connecting portions (12) extending in a direction away from the U-shaped laying portion (11), the U-shaped laying portion (11) having a laying space, the inner wall surface and / or the outer wall surface of the U-shaped laying portion (11) being provided with a reinforcing structure (30), the reinforcing structure (30) extending along the length direction of the protective cover (10); and At least one mounting seat (20), each mounting seat (20) is located at the bottom of the protective cover (10), two adjacent protective covers (10) are connected via one mounting seat (20), each mounting seat (20) comprises a second connecting portion (21) and a mounting portion (22), the second connecting portion (21) is mounted on the mounting portion (22), the second connecting portion (21) is movably arranged in a vertical direction relative to the mounting portion (22), and the second connecting portion (21) is configured to be connected to the first connecting portion (12).

2. The leaky cable protection structure according to claim 1, characterized in that: The reinforcing structure (30) comprises reinforcing ribs, wherein the reinforcing ribs extend along the length direction of the protective cover (10), and the ratio a of the thickness of the reinforcing ribs to the thickness of the protective cover (10) is in the range of 1 / 3≤a≤2 / 5; and / or the number of the reinforcing ribs is multiple, and the multiple reinforcing ribs are arranged along the circumference of the protective cover (10).

3. The leaky cable protection structure according to claim 1, characterized in that: The outer periphery of the mounting seat (20) is coated with a protective layer; and / or the outer periphery of the mounting seat (20) is coated with an anti-rust layer.

4. The leaky cable protection structure according to any one of claims 1 to 3, characterized in that: The leaky cable protection structure further comprises an anti-sagging structure, which is installed on the protection cover (10) and is configured to fix the leaky cable (80).

5. The leaky cable protection structure according to claim 4, characterized in that: The anti-sagging structure comprises a binding belt, and a binding structure is arranged on the side wall of the protective cover (10). Both ends of the binding belt are bound to the binding structure to form a limiting space, and the leaky cable (80) is located in the limiting space.

6. The leaky cable protection structure according to any one of claims 1 to 3, characterized in that: The leaky cable protection structure also includes a clamp (40), and the clamp (40) has a locked state locked on the leaky cable (80) and an unlocked state detached from the leaky cable (80). The clamp (40) includes a mounting body (41) and a locking structure (42). The mounting body (41) is mounted on the second connecting portion (21), and the first end of the locking structure (42) is hinged to the mounting body (41), and the second end of the locking structure (42) is constructed to be able to lock and cooperate with or disengage from the mounting body (41), so that the clamp (40) can switch between the locked state and the unlocked state.

7. The leaky cable protection structure according to claim 6, characterized in that: A first elastic limiting structure is provided on the side of the installation body (41) facing the leaky cable (80); when the clamp (40) is in the locked state, the leaky cable (80) elastically abuts against the first elastic limiting structure.

8. The leaky cable protection structure according to claim 7, characterized in that: The first elastic limiting structure comprises at least two first elastic sheets (43), and a side of each first elastic sheet (43) facing the leaky cable (80) is a curved surface, and the curved surface is adapted to the leaky cable (80).

9. The leaky cable protection structure according to claim 7, characterized in that: A second elastic limiting structure (44) is provided on the side of the locking structure (42) facing the leaky cable (80), and the second elastic limiting structure (44) is located above the first elastic limiting structure. When the clamp (40) is in the locking state, the first elastic limiting structure and the second elastic limiting structure (44) are both elastically in contact with the leaky cable (80).

10. The leaky cable protection structure according to claim 9, characterized in that: The second elastic limiting structure (44) comprises a hollow area (46) and a plurality of second elastic sheets (45), and the plurality of second elastic sheets (45) are all arranged at the opening end of the hollow area (46).

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