Ceiling type cable bridge device for tunnel

Abstract

The utility model relates to the technical field of cable bridges, and discloses a tunnel ceiling type cable bridge device which comprises a bridge and a cover plate, a connecting part is arranged at one end of the bridge, a buffer part is arranged in the bridge, the connecting part comprises a mounting frame, the mounting frame is arranged at one end of the bridge, and the cover plate is arranged on the mounting frame. An elastic sleeve is arranged at one end, far away from the bridge frame, of the mounting frame, the buffer part comprises a positioning plate, the positioning plate is arranged in the bridge frame, a movable seat is arranged on the positioning plate, a plurality of buffer seats are arranged on the surface of the movable seat, a sliding rod is arranged at one end, far away from the movable seat, of each buffer seat, and a limiting hook is assembled on each sliding rod. According to the utility model, the adjacent bridges are elastically connected through the elastic sleeves and the elastic pieces, the problem of height difference is solved, the installation efficiency is improved, and through the design of the damping springs and the limiting hooks of the buffer part, effective damping and buffering are provided for the cable, and the influence of tunnel vibration on the cable is reduced.

Description

Technical Field

[0001] This utility model relates to the field of cable tray technology, specifically to a tunnel ceiling-mounted cable tray device. Background Technology

[0002] In special environments such as tunnels, the laying and protection of cables are crucial. Due to the limited space inside tunnels (especially the top and side walls), ceiling-mounted designs fix the cable trays to the top of the tunnel, avoiding the occupation of ground or side wall space and leaving more space for vehicle passage, equipment installation and emergency access. Therefore, a cable tray device specifically designed for the ceiling-mounted environment of tunnels is needed to ensure the reliable laying and long-term stable operation of cables in tunnels.

[0003] For example, Chinese Patent Application No. 2021216906562 discloses a ceiling-mounted cable tray, which includes a cable tray with an upper surface, a lower surface, a left side, and a right side. Multiple sets of cable support mounting holes are symmetrically arranged on both sides near the lower surface of the cable tray. The cable support mounting holes are used to fix the cable support beams. This device ensures that the cable can be easily dragged on the cable support beams when passing cables through by setting multiple cable support beams in the cable tray. However, it does not provide sufficient buffer protection for the cables.

[0004] Based on the above solutions, when installing cable trays in tunnels, the top of the tray is usually connected to the precast slab at the top of the power pipe adjustment component trench, and a cover plate is installed at the bottom of the tray for sealing. However, during vehicle traffic, the tunnel will continuously vibrate, which can cause the trays to loosen over time. In addition, most existing adjacent trays are rigidly connected. Once one tray becomes loose, it may cause the vibration amplitude of adjacent trays to increase, leading to resonance between the trays. During this process, the cables will shift with the vibration of the trays, which can cause cable wear in severe cases. The existing buffer protection for cables is insufficient. When connecting two adjacent trays, if there is a height difference, the height of the trays needs to be readjusted, which is a complicated operation and reduces work efficiency. Utility Model Content

[0005] This utility model provides a tunnel ceiling-mounted cable tray device to solve the problems mentioned in the background art.

[0006] To solve the above problems, the present invention provides a tunnel ceiling-mounted cable tray device with the following technical solution:

[0007] It includes a cable tray and a cover plate, wherein one end of the cable tray is provided with a connecting part, and the inside of the cable tray is provided with a buffer part;

[0008] The connecting part includes a mounting bracket, which is disposed at one end of the cable tray, and an elastic sleeve is provided at the end of the mounting bracket away from the cable tray;

[0009] The buffer section includes a positioning plate disposed inside the cable tray. A movable seat is provided on the positioning plate. Multiple buffer seats are provided on the surface of the movable seat. A slide rod is provided at the end of the buffer seat away from the movable seat. A limit hook is mounted on the slide rod.

[0010] Preferably, there are two mounting brackets, the elastic sleeve is disposed between the two mounting brackets, and a storage groove is provided at the end of the mounting bracket near the elastic sleeve.

[0011] Preferably, the surface of the mounting frame is provided with a plurality of elastic elements, each of which is respectively disposed at one of the four corners of the mounting frame, and the elastic elements are fixedly connected between two mounting frames.

[0012] Preferably, a groove is provided at the position where the positioning plate connects to the movable seat, and the buffer seat is connected to the positioning plate by bolts.

[0013] Preferably, the buffer seat is provided with a damping spring inside, the slide rod passes through and extends to the outside of the damping spring, and the end of the damping spring away from the buffer seat is fixedly connected to the limiting hook.

[0014] Preferably, the limiting hook has a limiting groove inside that matches the slide bar, and the end of the limiting hook away from the buffer seat is bent into a hook shape for limiting and supporting the cable.

[0015] Preferably, a ventilation hole is provided on one side of the cable tray, and a limiting groove is provided at the end of the cable tray near the cover plate, and the limiting groove is adapted to the cover plate;

[0016] A fixing plate is provided on one side of the cable tray, and adjusting bolts are provided on the surface of the fixing plate.

[0017] Preferably, the cable tray is fixedly connected to the mounting bracket by bolts, and multiple mounting holes are provided at both ends of the cable tray, with the mounting holes being compatible with the bolts.

[0018] The beneficial effects of the tunnel ceiling-mounted cable tray device provided by this utility model are:

[0019] 1. This utility model, through the cooperation of elastic sleeve and elastic element, alleviates the problem of difficult installation connection between two adjacent cable trays due to the height difference during the installation process. Moreover, the length of the elastic sleeve and the elastic force of the elastic element can be adjusted according to the distance between two adjacent cable trays, thereby adjusting the deformation capacity and vibration resistance of the connection part, further enhancing the adaptability and stability of the cable tray. At the same time, when the tunnel vibrates, the cooperation of elastic sleeve and elastic element can achieve the purpose of buffering and vibration reduction, effectively reducing the resonance phenomenon between cable trays and improving the stability and reliability of cable trays.

[0020] 2. This utility model, by setting up a buffer seat, sliding rod, limiting hook and vibration damping spring, can effectively buffer and dampen the cable, reduce the impact of vibration in the tunnel on the cable, prevent the cable from being displaced or worn due to vibration, and improve the service life and operational stability of the cable. Attached Figure Description

[0021] The above and other objects, features, and advantages of the present invention will become readily understood by reading the following detailed description of exemplary embodiments with reference to the accompanying drawings. In the drawings, several embodiments of the present invention are shown by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding parts, wherein:

[0022] Figure 1 This is a first-view schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a second-view schematic diagram of the overall structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the assembly structure of the cable tray and cover plate of this utility model;

[0025] Figure 4 In this utility model Figure 3 Enlarged view of point A;

[0026] Figure 5 This is a cross-sectional schematic diagram of the buffer section structure of this utility model;

[0027] Figure 6 This is a cross-sectional view of the cable tray structure of this utility model;

[0028] Figure 7 In this utility model Figure 6 Enlarged view of point B;

[0029] Figure 8 This is a schematic diagram of the assembly structure of the cable tray and buffer section of this utility model;

[0030] Figure 9 In this utility model Figure 8 Enlarged view of point C;

[0031] Figure 10 This is a schematic diagram of the mounting bracket structure of this utility model.

[0032] In the diagram: 1. Cable tray; 11. Ventilation hole; 12. Mounting hole; 13. Fixing plate; 14. Adjusting bolt; 2. Cover plate; 3. Connecting part; 31. Mounting bracket; 32. Elastic sleeve; 33. Elastic element; 4. Buffer part; 41. Positioning plate; 42. Moving seat; 43. Buffer seat; 44. Slide rod; 45. Limit hook; 46. Vibration damping spring. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Those skilled in the art should understand that the embodiments described below are only some, not all, of the embodiments disclosed. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0034] The number of any elements in the accompanying drawings is for illustrative purposes only and not as a limitation, and any naming is for distinction only and has no limiting meaning.

[0035] The principles and spirit of this utility model will be explained in detail below with reference to several representative embodiments.

[0036] An embodiment of the ceiling-mounted cable tray device for tunnels provided by this utility model:

[0037] like Figures 1 to 10 As shown, it includes a cable tray 1 and a cover plate 2. One end of the cable tray 1 is provided with a connecting part 3, and the inside of the cable tray 1 is provided with a buffer part 4.

[0038] like Figure 3 , Figure 4 As shown, a ventilation hole 11 is provided on one side of the cable tray 1. By setting the ventilation hole 11, the air circulation inside the space formed by the cable tray 1 and the cover plate 2 is increased, thereby dissipating the heat generated by the cable during operation, preventing the cable from being damaged due to overheating, and improving the service life and operational stability of the cable. A limiting groove is provided at the end of the cable tray 1 near the cover plate 2, and the limiting groove is adapted to the cover plate 2. The cooperation between the limiting groove and the cover plate 2 can ensure that the cover plate 2 can be quickly installed on the cable tray 1, improving work efficiency. A fixing plate 13 is provided on one side of the cable tray 1. Adjusting bolts 14 are provided on the surface of the fixing plate 13. By tightening the adjusting bolts 14, the cover plate 2 on the cable tray 1 can be fixed, preventing the cover plate 2 from loosening or falling off under the influence of airflow and other factors in the tunnel, thus achieving the purpose of protection.

[0039] like Figure 5As shown, the connecting part 3 includes a mounting bracket 31, which is disposed at one end of the cable tray 1. An elastic sleeve 32 is provided at the end of the mounting bracket 31 away from the cable tray 1. There are two mounting brackets 31, and the elastic sleeve 32 is disposed between the two mounting brackets 31. A storage groove is provided at the end of the mounting bracket 31 near the elastic sleeve 32.

[0040] The surface of the mounting bracket 31 is provided with a plurality of elastic elements 33, which are respectively located at the four corners of the mounting bracket 31 and are fixedly connected between two mounting brackets 31.

[0041] In use, the two cable trays 1 can be connected by the mounting bracket 31 on the connecting part 3. By setting the elastic sleeve 32, the problem of difficult installation and connection of the two cable trays 1 due to the height difference can be alleviated during the installation process. At the same time, the elastic sleeve 32 and the elastic element 33 can also achieve the purpose of buffering and vibration reduction.

[0042] It is worth noting that the elastic element 33 has the characteristic of elastic extension and contraction, and the elastic element 33 is generally made of elastic spring.

[0043] like Figure 2 As shown, the cable tray 1 is fixedly connected to the mounting bracket 31 by bolts. Multiple mounting holes 12 are opened at both ends of the cable tray 1, and the mounting holes 12 are adapted to the bolts.

[0044] In use, the connection between the cable tray 1 and the mounting bracket 31 is made more secure and reliable by bolt connection, which facilitates installation and disassembly. At the same time, multiple mounting holes 12 are provided at both ends of the cable tray 1, so that the appropriate installation position can be selected according to the actual installation needs, thereby improving the installation flexibility and adaptability of the cable tray 1.

[0045] like Figures 6 to 9 As shown, the buffer section 4 includes a positioning plate 41, which is disposed inside the cable tray 1. A movable seat 42 is provided on the positioning plate 41, and a plurality of buffer seats 43 are provided on the surface of the movable seat 42. A slide rod 44 is provided at the end of the buffer seat 43 away from the movable seat 42, and a limit hook 45 is mounted on the slide rod 44. A sliding groove is provided at the position where the positioning plate 41 is connected to the movable seat 42, and the movable seat 42 is connected to the positioning plate 41 by bolts.

[0046] During installation, the sliding groove design allows the movable seat 42 to slide flexibly on the positioning plate 41, automatically adjusting according to the cable laying and stress conditions to ensure optimal buffering effect. Meanwhile, the bolt connection method ensures the firmness and reliability of the connection between the movable seat 42 and the positioning plate 41, facilitating installation and maintenance.

[0047] like Figure 10As shown, a damping spring 46 is provided inside the buffer seat 43, and a slide rod 44 passes through and extends to the outside of the damping spring 46. The end of the damping spring 46 away from the buffer seat 43 is fixedly connected to the limiting hook 45. The limiting hook 45 has a limiting groove inside that matches the slide rod 44. The end of the limiting hook 45 away from the buffer seat 43 is bent into a hook shape and is used to limit and support the cable.

[0048] When in use, the damping spring 46 provides an effective damping and buffering function for the cable. When vibration or impact occurs in the tunnel, the damping spring 46 can quickly absorb energy and reduce the impact on the cable. With the cooperation of the slide bar 44, the damping spring 46 and the limiting hook 45, the cable can be elastically limited and supported and damped to avoid damage caused by the cable colliding with the cable tray 1 and the cover plate 2.

[0049] When installing cable trays in tunnels, the top of the cable tray 1 is usually connected to the precast slab at the top of the power pipe adjusting component trench, and the cover plate 2 is installed at the bottom of the cable tray 1 for sealing. However, during vehicle traffic, the tunnel continuously vibrates, which can cause the cable tray 1 to loosen over time. In addition, most existing adjacent cable trays 1 are rigidly connected. Once one cable tray 1 becomes loose, it may cause an increase in the vibration amplitude of adjacent cable trays 1, leading to resonance between cable trays 1. During this process, the cable will shift with the vibration of the cable tray 1, which can cause cable wear in severe cases. The existing buffer protection for the cable is insufficient. When connecting two adjacent cable trays 1, if there is a height difference, the height of the cable tray 1 needs to be readjusted. This operation is relatively complicated and reduces work efficiency. To solve this problem, the following measures are taken:

[0050] First, the top of the cable tray 1 is fixedly connected to the precast slab on the tunnel using fasteners, and there is a distance between two adjacent cable trays 1 along the radial direction of the tunnel. Then, the two adjacent cable trays 1 are elastically connected by the connecting part 3. First, the mounting bracket 31 at one end of the connecting part 3 is inserted into the interior of the cable tray 1 and moved to a suitable position. Then, the mounting bracket 31 is fixed to one end of the cable tray 1 by bolts engaging with the mounting holes 12 on the cable tray 1. Similarly, the mounting bracket 31 at the other end of the connecting part 3 is inserted into the interior of the adjacent cable tray 1 and moved to a suitable position. Then, the mounting bracket 31 is fixed to one end of the cable tray 1 by bolts engaging with the mounting holes 12 on the cable tray 1. After installation, the elastic sleeve 32 and the elastic element 33 work together to achieve the purpose of elastic connection between the two adjacent cable trays 1.

[0051] During the above installation process, the elastic sleeve 32 can alleviate the problem of difficult installation and connection between two adjacent cable trays 1 due to the height difference. If the two cable trays 1 have a slight height difference due to the unevenness of the tunnel top during installation, the elastic sleeve 32 can undergo elastic deformation, so that the two cable trays 1 can be connected smoothly, avoiding the need to readjust the height of the cable trays 1 and improving work efficiency.

[0052] It is worth noting that by setting up a storage slot for storing the elastic sleeve 32, the elastic sleeve 32 is telescopic. The length of the elastic sleeve 32 and the elastic force of the elastic element 33 can be adjusted according to the distance between two adjacent cable trays 1, thereby adjusting the deformation capacity and shock resistance of the connecting part 3.

[0053] Then, one end of the cable is sequentially passed through multiple limiting hooks 45, and the cable is placed at the bend of the limiting hook 45. The limiting hook 45 provides limiting support for the cable, thus completing the cable threading operation within the cable tray 1. To prevent excessive displacement of the cable inside the cable tray 1, cable limiting is required. First, adjust the position of the movable seat 42 in the buffer section 4 on the positioning plate 41. Manually move the movable seat 42 along the slide groove on the positioning plate 41. When fixing, use bolts to fix the movable seat 42 to the positioning plate 41. Generally, the movable seats 42 at both ends of the cable tray 1 are increased. The quantity is increased, that is, the number of limiting hooks 45 at both ends of the cable tray 1 is increased, so that the interval between adjacent moving seats 42 at this position is smaller than the interval between adjacent moving seats 42 at the middle position of the cable tray 1, that is, the interval between limiting hooks 45 at this position is smaller than the interval between adjacent limiting hooks 45 at the middle position of the cable tray 1, so as to support and limit the cable, thereby improving the stability of the cable at the connection between the two ends of the cable tray 1 and the connecting part 3. Then, the cover plate 2 is slidably installed at the bottom end of the cable tray 1, so that the limiting groove on the cable tray 1 is assembled with the cover plate 2. Then, the adjusting bolt 14 is turned to press and fix the cover plate 2.

[0054] It is worth noting that when the cable is laid in the cable tray 1, the position of the limit hook 45 can be adjusted by moving the movable seat 42. That is, the position of the limit hook 45 can be automatically adjusted according to the cable laying and stress conditions to ensure the best buffering effect.

[0055] Under the pressure of the cable, the damping spring 46 is stretched, and the limiting hook 45 moves along the slide bar 44 towards the cover plate 2 under the pressure of the cable. At this time, the limiting hook 45 provides elastic support for the cable. During vehicle passage, the tunnel will continuously generate vibration, or there will be other mechanical vibration sources. The buffer part 4 buffers and dampens the cable. That is, through the cooperation of the buffer seat 43, slide bar 44, limiting hook 45 and damping spring 46, the cable support has an elastic limiting effect. When the cable is subjected to external force, the damping spring 46 can provide a certain elastic support to avoid the cable from colliding with the cable tray 1 and cover plate 2 and causing damage, thus ensuring the safe operation of the cable in the cable tray 1.

[0056] At the same time, the damping spring 46 will buffer these vibrations through its own elastic deformation, protecting the cable from damage. In addition, during the above process, the elastic sleeve 32 and elastic element 33 in the connecting part 3 can absorb and alleviate the vibration and vibration amplitude caused by the loosening of the cable tray 1, thus achieving the purpose of buffering and vibration reduction. This effectively solves the problem that if a cable tray 1 becomes loose, it may cause an increase in the vibration amplitude of adjacent cable trays 1, which may lead to resonance between cable trays 1.

[0057] Based on the above description in this specification, those skilled in the art will also understand that the following terms used, such as "upper," "lower," "front," "rear," "left," "right," "width," "horizontal," "top," "bottom," "inner," and "outer," which indicate orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings of this specification. They are only for the purpose of facilitating the explanation of the present invention and simplifying the description, and do not explicitly or implicitly suggest that the device or element involved must have the specific orientation, or be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms should not be understood or interpreted as limitations on the present invention.

[0058] In addition, in the description of this specification, "multiple" means at least two, such as two, three or more, etc., unless otherwise expressly and specifically defined.

Claims

1. A tunnel ceiling-mounted cable tray device, comprising a cable tray (1) and a cover plate (2), characterized in that: One end of the cable tray (1) is provided with a connecting part (3), and the inside of the cable tray (1) is provided with a buffer part (4); The connecting part (3) includes a mounting bracket (31), which is disposed at one end of the cable tray (1), and an elastic sleeve (32) is provided at the end of the mounting bracket (31) away from the cable tray (1); The buffer section (4) includes a positioning plate (41), which is located inside the cable tray (1). A movable seat (42) is provided on the positioning plate (41), and a plurality of buffer seats (43) are provided on the surface of the movable seat (42). A slide rod (44) is provided at one end of the buffer seat (43) away from the movable seat (42), and a limit hook (45) is fitted on the slide rod (44).

2. The tunnel ceiling-mounted cable tray device according to claim 1, characterized in that: There are two mounting brackets (31), and the elastic sleeve (32) is disposed between the two mounting brackets (31). The mounting bracket (31) has a storage groove at one end near the elastic sleeve (32).

3. The tunnel ceiling-mounted cable tray device according to claim 1, characterized in that: The surface of the mounting bracket (31) is provided with a plurality of elastic elements (33), and the plurality of elastic elements (33) are respectively disposed at the four corners of the mounting bracket (31), and the elastic elements (33) are fixedly connected between two mounting brackets (31).

4. The tunnel ceiling-mounted cable tray device according to claim 1, characterized in that: A sliding groove is provided at the position where the positioning plate (41) connects to the movable seat (42), and the movable seat (42) is connected to the positioning plate (41) by bolts.

5. A tunnel ceiling-mounted cable tray device according to claim 1, characterized in that: The buffer seat (43) is provided with a damping spring (46) inside, and the slide rod (44) passes through and extends to the outside of the damping spring (46). The end of the damping spring (46) away from the buffer seat (43) is fixedly connected to the limiting hook (45).

6. The tunnel ceiling-mounted cable tray device according to claim 1, characterized in that: The limiting hook (45) has a limiting groove inside that is adapted to the slide rod (44). The end of the limiting hook (45) away from the buffer seat (43) is bent into a hook shape, which is used to limit and support the cable.

7. A tunnel ceiling-mounted cable tray device according to claim 1, characterized in that: The cable tray (1) has a ventilation hole (11) on one side, and a limiting groove is provided at one end of the cable tray (1) near the cover plate (2), and the limiting groove is adapted to the cover plate (2); A fixing plate (13) is provided on one side of the cable tray (1), and an adjusting bolt (14) is provided on the surface of the fixing plate (13).

8. A tunnel ceiling-mounted cable tray device according to claim 1, characterized in that: The cable tray (1) is fixedly connected to the mounting bracket (31) by bolts. Multiple mounting holes (12) are opened at both ends of the cable tray (1), and the mounting holes (12) are adapted to the bolts.

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