Nested protective power transmission line cable bridge

Abstract

The invention discloses a nested protective power transmission line cable bridge, which relates to the technical field of electric power facilities, and comprises an outer bridge, an inner bridge, an outer rotating plate, an inner rotating plate, an elastic mechanism arranged on the outer rotating plate and the inner rotating plate, a fixing mechanism arranged in the inner bridge, a first hole and a second hole, the telescopic mechanism, the sealing plate, the third hole, the temperature and humidity sensor and the controller are arranged in the outer bridge frame; through cooperation of a first hole, a second hole, a telescopic mechanism, a sealing plate and a third hole, the telescopic mechanism drives the sealing plate to move, so that the first hole, the second hole and the third hole are aligned to form a ventilation channel, air circulation is enhanced, heat accumulated in equipment is effectively discharged, and overheating is prevented; sealing is achieved, external moisture is effectively isolated from entering, and the protection performance and operation stability of equipment are improved.

Description

Technical Field

[0001] This invention relates to the field of power facility technology, and in particular to a nested protective cable tray for power transmission lines. Background Technology

[0002] Cable trays are rigid structural systems used to support and fix various power, communication, and control cables. They are typically made of steel, aluminum alloys, or non-metallic composite materials and are widely used in cable laying projects in industrial facilities, high-rise buildings, underground utility tunnels, and other locations. "Nested" cable trays refer to multiple tray units that are combined and installed in an inner-outer-outer, layered manner to form an integrated, three-dimensional laying structure. This design not only effectively utilizes limited space resources and increases the cable capacity per unit cross-section, but also facilitates the layered arrangement and management of cables, and is beneficial for heat dissipation, maintenance, and future capacity expansion.

[0003] However, existing cable trays have poor heat dissipation when sealed, which can lead to cable overheating, insulation aging, and even short circuits and fires. Long-term open holes can also cause moisture to enter, resulting in equipment corrosion, reduced insulation performance, and increased risk of failure. Therefore, improvements are urgently needed. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a nested protective cable tray for power transmission lines, which aims to solve the technical problems of overheating due to poor sealing and heat dissipation, and corrosion caused by moisture entering through openings, both of which endanger the safe operation of cables.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A nested protective cable tray for power transmission lines includes an outer tray and an inner tray, wherein the inner tray is fixedly connected to the outer tray, and further includes: An outer rotating plate is rotatably mounted on the outer cable frame; An inner rotating plate is disposed on the inner cable tray and is rotatably connected to the inner cable tray; Two elastic mechanisms are provided, one elastic mechanism is provided on the outer rotating plate and the other elastic mechanism is provided on the inner rotating plate; Multiple fixing mechanisms are provided, and these multiple fixing mechanisms are fixedly installed inside the inner cable tray for fixing cables; Multiple first holes are provided, and multiple first holes are opened at the top of the inner cable tray; Multiple second holes are provided, and multiple second holes are opened at the top of the outer cable tray; A telescopic mechanism is disposed inside the outer cable tray and is fixedly connected to the outer cable tray; A sealing plate is provided on the telescopic mechanism; Multiple third holes are provided, and multiple third holes are opened on the sealing plate; A temperature and humidity sensor is installed inside the inner cable tray and is fixedly connected to the inner cable tray. The controller is fixedly mounted on the external cable tray.

[0006] Preferably, the elastic mechanism includes: Multiple springs are provided, and the multiple springs are disposed inside the outer rotating plate, with one end fixedly connected to the outer rotating plate; Two convex lifting plates are provided. The two convex lifting plates are set on the spring and fixedly connected to the other end of the spring. One convex lifting plate is slidably connected to the outer rotating plate, and the other convex lifting plate is slidably connected to the inner rotating plate. Two lifting rods are provided, and the two lifting rods are fixedly mounted on the convex lifting plate; Two inclined fixing plates are provided, and the two inclined fixing plates are fixedly installed on the lifting rod.

[0007] Preferably, the outer cable tray has a first inclined groove and the inner cable tray has a second inclined groove, which are used to cooperate with the inclined fixing plate to fix the outer rotating plate and the inner rotating plate, thereby achieving the sealing of the outer cable tray and the inner cable tray.

[0008] Preferably, the outer rotating plate is provided with a lifting groove, and the inner rotating plate is provided with a lifting groove, for limiting the lifting trajectory of the convex lifting plate.

[0009] Preferably, the fixing mechanism includes: Multiple fixing brackets are provided, and the multiple fixing brackets are fixedly installed inside the inner cable tray; Multiple elastic U-shaped sleeves are provided and are fixedly connected to the fixed frame.

[0010] Preferably, the telescopic mechanism includes: A U-shaped fixing plate is fixedly installed inside the outer cable tray; An electric telescopic rod is mounted on the U-shaped fixing plate and fixedly connected to the U-shaped fixing plate; An L-shaped movable plate is mounted on the electric telescopic rod, fixedly connected to the output end of the electric telescopic rod, and fixedly connected to the sealing plate.

[0011] Preferably, two first guide rails are fixedly provided inside the outer cable tray, and two second guide rails are fixedly provided on the outer side of the inner cable tray, for limiting the movement trajectory of the sealing plate.

[0012] Preferably, a power battery is fixedly installed on the outer bridge frame to provide power to the temperature and humidity sensor, the controller, and the electric telescopic rod.

[0013] Preferably, the second hole is provided with a plurality of dustproof nets, which are fixedly connected to the outer cable tray to prevent dust from entering the outer cable tray.

[0014] Preferably, the sealing plate is provided with four sliding grooves, two of which are slidably engaged with the first guide rail and two of which are slidably engaged with the second guide rail, for guiding the movement trajectory of the sealing plate.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: The first hole, the second hole, the telescopic mechanism, the sealing plate, and the third hole work together. The telescopic mechanism drives the sealing plate to move, aligning the first hole, the second hole, and the third hole to form a ventilation channel, enhancing air circulation, effectively dissipating the heat accumulated inside the equipment, and preventing overheating. When the third hole is misaligned with the first and second holes, a seal is achieved, effectively preventing external moisture from entering and improving the protective performance and operational stability of the equipment. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A three-dimensional structural diagram of a nested protective cable tray for power transmission lines is shown.

[0018] Figure 2 It shows Figure 1 Rear view.

[0019] Figure 3 It shows Figure 1 Side view sectional view.

[0020] Figure 4 It shows Figure 3 A magnified view of a portion of point A in the middle.

[0021] Figure 5 It shows Figure 1 A frontal sectional view.

[0022] Figure 6 A three-dimensional structural diagram of the telescopic mechanism and sealing plate is shown.

[0023] Figure 7A three-dimensional structural diagram of the elastic mechanism is shown.

[0024] Legend: 1. Outer cable tray; 2. Inner cable tray; 3. Outer rotating plate; 4. Inner rotating plate; 5. First hole; 6. Second hole; 7. Sealing plate; 8. Third hole; 9. Temperature and humidity sensor; 10. Controller; 11. Spring; 12. Convex lifting plate; 13. Lifting rod; 14. Inclined fixing plate; 15. First inclined groove; 16. Second inclined groove; 17. Lifting groove; 18. Fixing frame; 19. Elastic U-shaped sleeve; 20. U-shaped fixing plate; 21. Electric telescopic rod; 22. L-shaped moving plate; 23. First guide rail; 24. Second guide rail; 25. Power battery; 26. Dustproof net; 27. Slide groove. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0027] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] Reference Figures 1 to 7 The following is a further description of an embodiment of a nested protective power transmission line cable tray of the present invention.

[0030] A nested protective cable tray for power transmission lines includes an outer cable tray 1 and an inner cable tray 2, wherein the inner cable tray 2 is fixedly connected to the outer cable tray 1, and further includes: Reference Figure 1 , Figure 2 , Figure 4 and Figure 7 In a preferred embodiment, the outer rotating plate 3 is rotatably mounted on the outer cable tray 1; The inner rotating plate 4 is mounted on the inner cable tray 2 and is rotatably connected to the inner cable tray 2; The outer cable tray 1 has a first inclined groove 15 and the inner cable tray 2 has a second inclined groove 16, which are used to cooperate with the inclined fixing plate 14 to fix the outer rotating plate 3 and the inner rotating plate 4, thereby achieving the sealing of the outer cable tray 1 and the inner cable tray 2.

[0031] Two elastic mechanisms are provided: one elastic mechanism is disposed on the outer rotating plate 3, and the other elastic mechanism is disposed on the inner rotating plate 4; the elastic mechanisms include: Multiple springs 11 are provided, and multiple springs 11 are disposed inside the outer rotating plate 3, with one end fixedly connected to the outer rotating plate 3. Two convex lifting plates 12 are provided. The two convex lifting plates 12 are set on the spring 11 and fixedly connected to the other end of the spring 11. One convex lifting plate 12 is slidably connected to the outer rotating plate 3, and the other convex lifting plate 12 is slidably connected to the inner rotating plate 4. There are two lifting rods 13, which are fixedly mounted on the convex lifting plate 12. Two inclined fixing plates 14 are provided, and the two inclined fixing plates 14 are fixedly installed on the lifting rod 13.

[0032] The outer rotating plate 3 is provided with a lifting groove 17, and the inner rotating plate 4 is provided with a lifting groove 17, which is used to limit the lifting trajectory of the convex lifting plate 12.

[0033] During operation, the convex lifting plate 12 is manually pressed down and moved down along the lifting groove 17. The convex lifting plate 12 drives the lifting rod 13 to move down and compress the spring 11, so that it stores elastic potential energy. The lifting rod 13 drives the inclined fixing plate 14 to move down out of the first inclined groove 15 and the second inclined groove 16, thereby releasing the fixed connection between the outer rotating plate 3 and the inner rotating plate 4 and the outer cable tray 1 and the inner cable tray 2, which facilitates the rapid maintenance of the cable. Reference Figure 1 , Figure 2 , Figure 3 and Figure 5 In a preferred embodiment, multiple fixing mechanisms are provided, and these multiple fixing mechanisms are fixedly installed inside the inner cable tray 2 for fixing cables; the fixing mechanisms include: Multiple fixing brackets 18 are provided, and multiple fixing brackets 18 are fixedly installed inside the inner cable tray 2; Multiple elastic U-shaped sleeves 19 are provided, and multiple elastic U-shaped sleeves 19 are disposed on the fixed frame 18 and fixedly connected to the fixed frame 18.

[0034] During operation, the cable is manually squeezed into the elastic U-shaped sleeve 19. The cable causes the elastic U-shaped sleeve 19 to deform and generate elastic potential energy. The elastic U-shaped sleeve 19 positions and fixes the cable. The fixing frame 18 is used to fix the position of the elastic U-shaped sleeve 19 and make it linearly distributed. Reference Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6 In a preferred embodiment, there are multiple first holes 5, and the multiple first holes 5 are opened on the top of the inner cable tray 2; Multiple second holes 6 are provided, and multiple second holes 6 are opened on the top of the outer cable tray 1; Multiple dustproof nets 26 are installed inside the second hole 6. The dustproof nets 26 are fixedly connected to the outer cable tray 1 to prevent dust from entering the outer cable tray 1.

[0035] The telescopic mechanism is located inside the outer cable tray 1 and is fixedly connected to the outer cable tray 1; the telescopic mechanism includes: U-shaped fixing plate 20 is fixedly installed inside the outer cable tray 1; An electric telescopic rod 21 is mounted on a U-shaped fixed plate 20 and is fixedly connected to the U-shaped fixed plate 20; The L-shaped movable plate 22 is mounted on the electric telescopic rod 21 and is fixedly connected to the output end of the electric telescopic rod 21 and to the sealing plate 7.

[0036] Sealing plate 7 is installed on the telescopic mechanism; Two first guide rails 23 are fixedly installed inside the outer cable tray 1, and two second guide rails 24 are fixedly installed on the outer side of the inner cable tray 2, which are used to limit the movement trajectory of the sealing plate 7.

[0037] The sealing plate 7 is provided with four sliding grooves 27. Two sliding grooves 27 are slidably engaged with the first guide rail 23, and two sliding grooves 27 are slidably engaged with the second guide rail 24, which are used to guide the movement trajectory of the sealing plate 7.

[0038] There are multiple third holes 8, which are formed on the sealing plate 7. During operation, the electric telescopic rod 21 is activated, which drives the L-shaped moving plate 22 to move. The L-shaped moving plate 22 then drives the sealing plate 7 to move along the first guide rail 23 and the second guide rail 24, thereby moving the third hole 8. This aligns the first hole 5, the second hole 6, and the third hole 8, forming a ventilation channel, enhancing air circulation, effectively dissipating the heat accumulated inside the equipment, and preventing overheating. When the equipment is running normally or the ambient humidity is too high, the electric telescopic rod 21 resets, driving the sealing plate 7 to move, causing the third hole 8 to be misaligned with the first and second holes 6, achieving a seal, effectively preventing external moisture from entering, and improving the protective performance and operational stability of the equipment.

[0039] A power battery 25 is fixedly installed on the outer cable tray 1 to provide power to the temperature and humidity sensor 9, the controller 10 and the electric telescopic rod 21.

[0040] Temperature and humidity sensor 9 is installed inside the inner cable tray 2 and is fixedly connected to the inner cable tray 2; it is used to detect the temperature and humidity inside the inner cable tray 2 in real time and feed the information back to the controller 10. The controller 10 is fixedly mounted on the outer cable tray 1. It is used to control the start of the electric telescopic pole 21 based on feedback information.

[0041] Working principle: By manually pressing down the convex lifting plate 12 and moving it down along the lifting groove 17, the convex lifting plate 12 drives the lifting rod 13 down and compresses the spring 11, storing elastic potential energy. The lifting rod 13 then drives the inclined fixing plate 14 down out of the first inclined groove 15 and the second inclined groove 16, thereby releasing the fixed connection between the outer rotating plate 3 and the inner rotating plate 4 and the outer cable tray 1 and the inner cable tray 2, facilitating the rapid installation or maintenance of cables. The temperature and humidity sensor 9 detects the temperature and humidity inside the inner cable tray 2 in real time and feeds the information back to the controller 10. The controller 10 then activates the electric telescopic rod 21 based on the information. The telescopic rod 21 moves the L-shaped moving plate 22, which in turn moves the sealing plate 7 along the first guide rail 23 and the second guide rail 24. This causes the third hole 8 to move, aligning the first hole 5, the second hole 6, and the third hole 8 to form a ventilation channel. This enhances air circulation, effectively dissipates heat accumulated inside the equipment, and prevents overheating. When the equipment is running normally or the ambient humidity is too high, the electric telescopic rod 21 resets, moving the sealing plate 7 to offset the third hole 8 from the first and second holes 6, achieving a seal and effectively preventing external moisture from entering, thus improving the equipment's protective performance and operational stability.

[0042] The above description of the embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A nested protective cable tray for power transmission lines, comprising an outer cable tray (1) and an inner cable tray (2), wherein the inner cable tray (2) is fixedly connected to the outer cable tray (1), characterized in that it further comprises: The outer rotating plate (3) is rotatably mounted on the outer bridge frame (1); An inner rotating plate (4) is disposed on the inner cable tray (2) and is rotatably connected to the inner cable tray (2); Two elastic mechanisms are provided, one elastic mechanism is provided on the outer rotating plate (3) and the other elastic mechanism is provided on the inner rotating plate (4); Multiple fixing mechanisms are provided, and the multiple fixing mechanisms are fixedly installed inside the inner cable tray (2) for fixing cables; Multiple first holes (5) are provided, and multiple first holes (5) are opened at the top of the inner cable tray (2); Multiple second holes (6) are provided, and multiple second holes (6) are opened on the top of the outer cable tray (1); The telescopic mechanism is located inside the outer cable tray (1) and is fixedly connected to the outer cable tray (1); A sealing plate (7) is disposed on the telescopic mechanism; Multiple third holes (8) are provided, and multiple third holes (8) are opened on the sealing plate (7); A temperature and humidity sensor (9) is installed inside the inner cable tray (2) and is fixedly connected to the inner cable tray (2); The controller (10) is fixedly mounted on the outer cable tray (1).

2. The nested protective cable tray for power transmission lines according to claim 1, characterized in that, The elastic mechanism includes: Multiple springs (11) are provided, and multiple springs (11) are provided inside the outer rotating plate (3), with one end fixedly connected to the outer rotating plate (3); Two convex lifting plates (12) are provided. The two convex lifting plates (12) are set on the spring (11) and fixedly connected to the other end of the spring (11). One of the convex lifting plates (12) is slidably connected to the outer rotating plate (3), and the other convex lifting plate (12) is slidably connected to the inner rotating plate (4). There are two lifting rods (13), and the two lifting rods (13) are fixedly installed on the convex lifting plate (12); Two inclined fixing plates (14) are provided, and the two inclined fixing plates (14) are fixedly installed on the lifting rod (13).

3. The nested protective cable tray for power transmission lines according to claim 2, characterized in that, The outer cable tray (1) is provided with a first inclined groove (15), and the inner cable tray (2) is provided with a second inclined groove (16), which are used to cooperate with the inclined fixing plate (14) to fix the outer rotating plate (3) and the inner rotating plate (4), thereby achieving the sealing of the outer cable tray (1) and the inner cable tray (2).

4. A nested protective cable tray for power transmission lines according to claim 3, characterized in that, The outer rotating plate (3) is provided with a lifting groove (17), and the inner rotating plate (4) is provided with a lifting groove (17) to limit the lifting trajectory of the convex lifting plate (12).

5. A nested protective transmission line cable tray according to claim 4, characterized in that, The fixing mechanism includes: Multiple fixing brackets (18) are provided, and multiple fixing brackets (18) are fixedly installed inside the inner bridge frame (2); Multiple elastic U-shaped sleeves (19) are provided, and multiple elastic U-shaped sleeves (19) are provided on the fixed frame (18) and fixedly connected to the fixed frame (18).

6. A nested protective transmission line cable tray according to claim 5, characterized in that, The telescopic mechanism includes: U-shaped fixing plate (20) is fixedly installed inside the outer cable tray (1); An electric telescopic rod (21) is mounted on the U-shaped fixing plate (20) and fixedly connected to the U-shaped fixing plate (20); The L-shaped movable plate (22) is set on the electric telescopic rod (21), fixedly connected to the output end of the electric telescopic rod (21), and fixedly connected to the sealing plate (7).

7. A nested protective cable tray for transmission lines according to claim 6, characterized in that, The outer cable tray (1) is fixedly provided with two first guide rails (23), and the inner cable tray (2) is fixedly provided with two second guide rails (24) on the outside, which are used to limit the movement trajectory of the sealing plate (7).

8. A nested protective cable tray for power transmission lines according to claim 7, characterized in that, The outer bridge (1) is fixedly equipped with a power battery (25) for providing power to the temperature and humidity sensor (9), the controller (10) and the electric telescopic rod (21).

9. A nested protective cable tray for transmission lines according to claim 8, characterized in that, The second hole (6) is provided with multiple dustproof nets (26), which are fixedly connected to the outer cable tray (1) to prevent dust from entering the outer cable tray (1).

10. A nested protective transmission line cable tray according to claim 9, characterized in that, The sealing plate (7) is provided with four sliding grooves (27), two of which are slidably engaged with the first guide rail (23) and two of which are slidably engaged with the second guide rail (24) to guide the movement trajectory of the sealing plate (7).

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