A cable rack

Abstract

The present invention discloses a cable rack, which includes a fixing seat, which is installed on the side wall of a wall; a cable rack body, which includes a support frame, which is rotatably connected to the fixing seat, and a wave frame detachably connected to the support frame, and the wave frame fixes the cable through a cable fixing assembly; in the solution of the present invention, the upper part of the cable rack adopts a wave frame, and the lower part is an aluminum alloy H-section beam. The upper part of the wave frame is used to support the cable and increase the ventilation volume, and the lower part is connected to the H-beam to improve the bending stiffness of the beam. After the cable is installed, it is fixed with a U-shaped hoop. The root of the cable rack is rotatable and can be erected against the wall when no cable is installed, saving a lot of space for narrow cable tunnels, which can be used for the movement of personnel and equipment, and can also improve the heat dissipation efficiency in the tunnel.

Description

Technical Field

[0001] The invention belongs to the technical field of line installation accessories, and in particular relates to a cable bracket. Background Art

[0002] Cables are typically laid in cable trenches and tunnels, and cable racks are the components that support and secure cables within tunnels. Currently, typical cable tunnel designs primarily utilize single-angle steel as cable racks. Once installed, these racks are cantilevered structures without an axis of symmetry, resulting in low bending capacity and poor adaptability to cables of varying diameters and types, making them infeasible for future cable upgrade planning. Furthermore, their vertical limbs impair ventilation within the tunnel, which in turn affects the cable's current carrying capacity, making them difficult to meet ventilation requirements within narrow corridors.

[0003] like Figure 1 As shown in the figure, the single angle steel, single-side mounted cable rack currently in widespread use. The angle iron bracket is usually made of angle iron profiles connected or spliced ​​by welding or fasteners. This type of cable rack was mostly used in the early days, but with the continuous development of the power industry, this angle steel cable rack is increasingly unsuitable for the development requirements of modern power, exposing many shortcomings.

[0004] ① The cable tunnel is located underground. Due to the cost, construction difficulty, and existing underground structures, the space is usually small. When laying cables in the later stage, the remaining space in the already narrow cable tunnel becomes even narrower, which brings obstacles and inconvenience to the further laying of cables and the movement of personnel in the trench.

[0005] ② Before securing cables, they need to be placed on the cable rack and then secured with cable clamps. Because the top surface of the angle steel cable rack is flat, the cables are prone to sliding after placement and before being secured. Especially when multiple cables are placed on a single rack, it is difficult to maintain consistent cable spacing on each cable rack, affecting heat dissipation, unsightly, and significantly increasing the workload of subsequent securing operations.

[0006] ③. Because the cross section of the angle steel is asymmetrical with respect to the bending axis, the side without the vertical limb after supporting the cable sinks more and the initial defect is larger than that of the symmetrical cross section member, and the bearing capacity is lower under the same cross-sectional area.

[0007] Cables are the primary heat source in cable tunnels, and tunnel ventilation is needed to remove heat from the cable surface to ensure the cable's operating temperature remains within specified limits. Existing angle steel brackets primarily rely on increasing the length and thickness of the vertical limbs to achieve bending resistance. This design increases resistance to air flow within the tunnel and reduces ventilation effectiveness.

[0008] ⑤. Furthermore, if the long-term plan calls for cable racks to be installed on both walls, but only one side currently has cables, the unused rack on the other side will hinder both personnel movement and equipment handling within the tunnel, as well as reduce ventilation. Therefore, the existing angle steel racks cannot be adjusted to accommodate the number and weight of cables after installation. This, combined with future cable replacement and upgrades, results in low economic efficiency and space utilization.

[0009] Therefore, there is an urgent need for an innovative device, especially a cable rack that can adjust the load-bearing capacity according to the cable diameter, weight, and number of loops. After installation, it can meet the requirements of full life cycle use, take into account ventilation and aesthetics, and at the same time meet the installation requirements of different cable models. Summary of the Invention

[0010] The technical problem addressed by the present invention is to provide a cable rack comprising a corrugated frame on the upper portion and an aluminum alloy H-section beam (i.e., a support plate) on the lower portion. The upper portion of the corrugated frame supports the cables and increases ventilation, while the lower portion is connected to the H-beam to enhance the crossbeam's bending stiffness. After installation, the cables are secured with U-shaped hoops. The base of the cable rack is rotatable and can be erected against a wall when no cables are installed. This frees up significant space in narrow cable tunnels, allowing for the movement of personnel and equipment and improving heat dissipation within the tunnel. The corrugated frame and support plate are detachably connected, allowing the cable rack's load capacity to be adjusted based on cable diameter, weight, and number of circuits, accommodating the installation of different cable types. After installation, the rack can meet full lifecycle requirements while ensuring both ventilation and aesthetics.

[0011] The technical means adopted by the present invention are as follows.

[0012] A cable rack comprises a fixing seat, which is installed on the side wall of a wall; a cable rack body, which comprises a support frame, which is rotatably connected to the fixing seat, and a wave frame is detachably connected to the support frame, and the wave frame fixes the cable through a cable fixing assembly.

[0013] Furthermore, the wave frame includes two wave support bars arranged at intervals and a connecting plate located below the wave support bar and fixedly connected thereto; slots are provided on both sides of the connecting plate, and the slots are detachably fixed to the upper edge of the support frame.

[0014] Furthermore, the support frame is provided with a connecting surface, and the connecting surface and the connecting plate are provided with corresponding through holes.

[0015] Furthermore, a plurality of reinforcing pillars are arranged at intervals between the wave support strip and the upper edges of the two side walls of the connecting plate.

[0016] Furthermore, the wave support strips, the connecting plates and the reinforcing pillars enclose a hollow area A.

[0017] Furthermore, a fixed shaft is provided on the fixing seat, a rotating shaft is provided on the supporting frame, and the rotating shaft is sleeved on the fixed shaft to realize a rotational connection.

[0018] Furthermore, a limit block is provided on the fixed seat, and an outward-extending tooth is provided on the non-cantilever end of the support frame; when the rotating shaft is sleeved on the fixed shaft, the outward-extending tooth is located below the limit block, and when the support frame rotates to a specific angle, the outward-extending tooth contacts and abuts against the limit block to achieve the limitation and fixation of the support frame.

[0019] Furthermore, the cable fixing assembly mainly includes a cable clamp, a gasket and a nut; a through hole is opened on the gasket, and the through hole matches the through hole on the connecting surface and the connecting plate; the two connecting ends of the cable clamp are clamped on the outside of the cable and pass through the through hole and the through hole in turn, and the cable is locked and fixed by the nut.

[0020] Furthermore, the cable clamp is made of FRP material.

[0021] Furthermore, the support frame is made of aluminum alloy, and the wave frame is made of FRP.

[0022] The beneficial effects produced by the present invention are as follows.

[0023] ①. The cable rack described in the present invention adopts FRP material, which has lighter weight, stronger deformation ability and higher strength than metal materials such as structural steel and aluminum alloy.

[0024] ② The cable rack is split into two parts and then connected into a whole using slots and cable clamps. This allows for flexible adaptation to the requirements of long-term cable tunnel planning and accommodates cables of varying diameters, weights, and numbers without replacing component B, which is fixed to the wall.

[0025] ③. Based on the structural stress characteristics, hollow and variable cross-section designs are adopted to reduce the deadweight of the cable rack and increase the effective bearing capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the installation structure of the existing angle steel cable rack.

[0027] Figure 2 It is a schematic diagram of the overall installation structure of the present invention.

[0028] Figure 3 This is a schematic diagram of the overall installation structure of the present invention.

[0029] Figures 4A-4D Schematic diagram of the support structure of the present invention.

[0030] Figure 5 It is a schematic diagram of the disassembled connection structure between the support frame and the fixing seat of the present invention.

[0031] Figures 6A-6B This is a schematic diagram of the support frame of the present invention in a horizontal state.

[0032] Figures 7A-7B This is a schematic diagram of the support frame of the present invention in a vertical state.

[0033] Figure 8A This is a schematic diagram of the installation of the wave frame and cables of the present invention.

[0034] Figure 8B It is a side view of the wave frame structure of the present invention.

[0035] Figure 8C This is a three-dimensional diagram of the wave frame structure of the present invention.

[0036] Figure 9 Schematic diagram of the cable fixing assembly of the present invention.

[0037] Description of the figure number:

[0038] Fixed seat 10

[0039] Limit Block 101

[0040] Fixed shaft 102

[0041] Cable rack body 20

[0042] Support frame 201

[0043] Outrigger 2011

[0044] Connection Surface 2012

[0045] Axis 2013

[0046] Wave rack 202

[0047] Wave support bar 2021

[0048] Connecting plate 2022

[0049] Card slot 20221

[0050] Strengthening Pillar 2023

[0051] Cable fixing assembly 30

[0052] Cable clamp 31

[0053] Gasket 32

[0054] Nut 33

[0055] Cable 40. DETAILED DESCRIPTION

[0056] like Figures 2 to 3As shown, the cable rack of the present invention primarily comprises a fixing base 10, a cable rack body 20, and a cable fixing assembly 30. The fixing base 10 is mounted on the side wall of a wall. The cable rack body 20 comprises a support frame 201, which is rotatably connected to the fixing base 10. The rotation angle can be adjusted according to site conditions, preferably between 0° and 90°. A wave frame 202 is detachably connected to the support frame 201. Cables are mounted in grooves on the wave frame 202 and secured to the cable rack body 20 via a cable fixing assembly 30. When not in use, the cable rack of the present invention can be rotated upward to align parallel to the wall. This increases construction space within the cable trench or cable tunnel, significantly improving construction efficiency. Furthermore, the present invention provides a detachable connection structure between the support frame and the wave frame. The wave frame can accommodate different cable types, flexibly adapting to the long-term planning requirements of cable tunnels. This allows for the adaptation of cables of varying diameters, weights, and numbers without replacing the cable rack body fixed to the wall. At the same time, the present invention also adopts a hollow and variable cross-section design according to the structural stress characteristics, thereby reducing the dead weight of the cable rack and improving the effective bearing capacity.

[0057] The various components of the present invention are described in detail below with reference to the embodiments.

[0058] See also Figures 4A-4D , a schematic diagram of the cable rack structure of the present invention. As shown, the support frame 201 is preferably an H-shaped steel structure with a variable cross-section. The support frame 201 includes a connecting surface 2012, which forms a hollow structure with the upper and lower edges of the support frame 201. The connecting surface 2012 is provided with a plurality of elongated through-holes. A rotating shaft 2013 is embedded in one end of the support frame 201 (preferably the end with the larger cross-section). The connecting edge between the rotating shaft 2013 and the support frame 201 is a hollow structure to enhance stability. An outwardly extending tooth 2011 is provided on the non-cantilevered end of the support frame 201 (i.e., the end where the rotating shaft 2013 is provided).

[0059] For further information, see Figure 5 The fixing base 10 includes a first fixing plate and a second fixing plate arranged at an angle. The first fixing plate is fixedly mounted on the side wall of the wall. The second fixing plate is provided with a fixing shaft 102 inwardly facing and parallel to the first fixing plate. The fixing shaft 102 matches the rotating shaft 2013. The support frame 201 is rotatably connected to the fixing base 10 via the fixing shaft 102. At the same time, a limit block 101 is installed on the first fixing plate. Preferably, the limit block 101 is installed at a height higher than the fixing shaft 102, and the shape of the limit block 101 matches the overhanging teeth 2011, so that the support frame 201 can rotate around the fixing shaft.

[0060] Please also refer to Figures 6A-6B The support frame of the present invention is in a horizontal state schematic diagram and Figures 7A-7B The figure is a schematic diagram of the support frame of the present invention in a vertical state. In the working state, the support frame 201 is in a horizontal state. At this time, the outward-extending teeth 2011 at the non-cantilever end of the support frame are released from the limit block 101 and are restricted by the limit block 101, so that the support frame 201 remains horizontal. When a larger space is required for maintenance or other reasons, the support frame is rotated upward around the fixed axis 102. Preferably, when the support frame 201 is rotated upward 90° and perpendicular to the ground, the movable space in the cable trench is maximized, providing convenience for maintenance personnel to move in the trench and for the entry of maintenance equipment.

[0061] like Figures 8A-8B As shown, the present invention further provides a wave frame 202 that is detachably connected to the upper edge of the support frame 201. The wave frame 202 includes two wave support bars 2021 spaced apart from each other, and a connecting plate 2022 located below and fixedly connected to the wave support bars 2021. Preferably, the distance between the two wave support bars 2021 matches the width of the support frame. The connecting plate 2022 is provided with through holes (not shown) that correspond one-to-one with the connecting surface 2012. Slots 20221 are provided on both sides of the connecting plate 2022, and the slots 20221 are detachably connected to the upper edge of the support frame 201.

[0062] 2. Furthermore, a plurality of reinforcing struts 2023 are disposed between the upper edges of the two side walls of the wave support strips 2021 and the connecting plates 2022, effectively utilizing the cross-sectional area and increasing the load-bearing capacity. Preferably, the reinforcing struts 2023 are positioned within the recesses of the wave support strips 2021. Furthermore, a longitudinal hollow area A is formed between the wave support strips 2021, the connecting plates 2022, and the reinforcing struts 2023, reducing the cable rack's weight and airflow obstruction, thereby increasing the effective load-bearing capacity of the cable rack and enhancing tunnel ventilation.

[0063] See Figure 8C , is a schematic diagram of the installation of a wave rack and a cable according to the present invention. The cable 40 is preferably installed in the recess of the wave support bar 2021. The cable 40 is fixedly connected to the cable rack body 20 via a cable fixing assembly 30.

[0064] Please also refer to Figure 9 Schematic diagram of a cable fixing assembly according to the present invention. The cable fixing assembly 30 comprises a cable clamp 31, a washer 32, and a nut 33. The washer 32 has a through hole that matches and corresponds to the through holes on the connecting surface 2012 and the connecting plate 2022.

[0065] When in use, the cable clamp 31 is clamped above the cable 40, and then the connecting end of the cable clamp 31 is passed through the through holes on the wave frame 202 and the support frame 201, and the through hole on the gasket 32 ​​in sequence, and finally fixed by the nut 33.

[0066] Preferably, the support frame 201 is made of aluminum alloy, and the wave frame 202 and the cable clamp (31) are made of FRP. The present invention fully utilizes the characteristics of low density and high strength of both FRP and aluminum alloy.

[0067] The FRP material described in this invention refers to a composite material primarily composed of epoxy resin and E-glass fiber. Compared to metal materials such as structural steel and aluminum alloys, it is lighter in weight, has greater deformation capacity and flexural rigidity (i.e., the ability of an object to resist bending deformation), and is therefore higher in strength.

[0068] In the solution of the present invention, the upper portion of the cable rack is a corrugated frame, and the lower portion is an aluminum alloy H-section beam. The upper portion of the corrugated frame is used to support the cables and increase ventilation, while the lower portion is connected to the H-beam to increase the bending stiffness of the crossbeam. After installation, the cables are secured with a U-shaped clamp. The base of the cable rack is rotatable and can be erected against the wall when no cables are installed. This saves a lot of space in narrow cable tunnels, allowing for the movement of personnel and equipment, and also improves the heat dissipation efficiency within the tunnel. In summary, the present invention has the following advantages compared to the existing technology.

[0069] 1. The hollowed-out sections of the FRP wave rack reduce deadweight and airflow obstruction, thereby increasing the effective load-bearing capacity of the cable rack and enhancing tunnel ventilation. The wave rack is not hollowed out except at the center of gravity of each cable, effectively utilizing the cross-sectional area and increasing the load-bearing capacity.

[0070] 2. Because the FRP wave frame and the aluminum alloy support frame are split structures, when the support frame is installed on the wall, different shapes of wave frames can be installed to adapt to the cable diameter and number without replacing the support frame on the wall.

[0071] 3. Since the wave rack and the support plate are a force-bearing whole after being installed through the slot, when processing the wave rack, the size of the longitudinal hollow area A of the wave rack can be adjusted to change the cross-sectional area and bending stiffness of the entire cable rack while keeping the support rack unchanged, so as to cope with the installation of cables of different weights.

[0072] 4. Because the non-cantilever end of the support frame adopts a rotating shaft, the cable rack can switch between vertical and horizontal states. When no cables are laid, the support frame can be directly erected against the wall to increase the ventilation area of ​​the tunnel and the space for personnel and equipment to move around.

[0073] 5. The support plate adopts a variable height H section. The lower section height increases as it approaches the root (i.e., the non-cantilever end), which is consistent with the stress characteristics of the cantilever beam, effectively utilizing the section height, reducing the windshield area, and reducing the deadweight of the cable rack.

[0074] 6. Because the wave rack and cable clamp are made of FRP material and have a relatively flat cross-section, the cable can be dragged longitudinally during placement more smoothly without damaging the cable surface, and it is also more secure after being fixed.

Claims

1. A cable rack, characterized in that: The cable rack contains: A fixing seat (10), wherein the fixing seat (10) is installed on the side wall of the wall; A cable rack body (20), the cable rack body (20) comprising a support frame (201), the support frame (201) being rotatably connected to the fixing seat (10), a wave frame (202) being detachably connected to the support frame (201), and the wave frame (202) fixing the cable via a cable fixing assembly (30); The wave frame (202) comprises two wave support bars (2021) arranged at intervals, and a connecting plate (222) located below the wave support bars (2021) and fixedly connected thereto; Card slots (20221) are provided on both sides of the connecting plate (2022), and the card slots (20221) are detachably fixed to the upper edge of the support frame (201); A plurality of reinforcing pillars (2023) are arranged at intervals between the upper edges of the two side walls of the wave support bar (2021) and the connecting plate (2022); the wave support bar (2021), the connecting plate (2022) and the reinforcing pillars (2023) enclose a hollow area A; the reinforcing pillars (2023) are arranged in a recess of the wave support bar (2021); and the cable (40) is installed in the recess of the wave support bar (2021).

2. A cable rack according to claim 1, characterized in that: The support frame (201) is provided with a connecting surface (2012), and corresponding through holes are provided on the connecting surface (2012) and the connecting plate (2022).

3. A cable rack according to claim 1, characterized in that: A fixed shaft (102) is provided on the fixed seat (10), a rotating shaft (2013) is provided on the support frame (201), and the rotating shaft (2013) is sleeved on the fixed shaft (102) to achieve a rotational connection.

4. A cable rack according to claim 3, characterized in that: A limit block (101) is provided on the fixing seat (10), and an outwardly extending tooth (2011) is provided on the non-cantilever end of the support frame (201); When the rotating shaft (2013) is sleeved on the fixed shaft (102), the outwardly extending teeth (2011) are located below the limiting block (101); when the support frame (201) rotates to a specific angle, the outwardly extending teeth (2011) contact and abut against the limiting block (101) to achieve limiting and fixing of the support frame.

5. A cable rack according to any one of claims 1 to 3, characterized in that: The cable fixing assembly (30) mainly comprises a cable clamp (31), a gasket (32) and a nut (33); The gasket (32) is provided with a through hole, which matches the through hole on the connecting surface (2012) and the connecting plate (2022); The two connecting ends of the cable clamp (31) are clamped on the outside of the cable and pass through the through hole and the through hole in sequence, and the cable is locked and fixed by the nut (33).

6. A cable rack according to claim 5, characterized in that: The cable clamp (31) is made of FRP material.

7. A cable rack according to any one of claims 1 to 3, characterized in that: The support frame (201) is made of aluminum alloy, and the wave frame (202) is made of FRP.

Images