High-strength fireproof flame-retardant groove type cable bridge

Abstract

The utility model discloses a high-strength fireproof flame-retardant groove type cable bridge, which relates to the technical field of cable bridges and comprises a cable bridge body and a U-shaped frame, the U-shaped frame is mounted on one side of a mounting column and arranged at the bottom of the cable bridge body, when the cable bridge body shakes left and right, impact force enables a first spring damper to be compressed, and the cable bridge body shakes left and right. The spring absorbs part of energy, the damper converts impact energy into heat energy and the like through internal damping medium resistance for dissipation, the impact speed and strength are reduced, the energy is prevented from being totally returned to the bridge frame when the spring rebounds, the vibration amplitude is reduced, the vibration duration time is shortened, and during vertical vibration, the V-shaped piece is compressed by vertical pressure, and the included angle is decreased. The V-shaped part is made of spring steel and can be quickly reset, the V-shaped part is matched with the second spring damper, the V-shaped part buffers downward pressure through elastic deformation and multi-angle force dispersion, the second spring damper is stretched, the V-shaped part and the second spring damper cooperate to form an efficient dual-energy absorption and dissipation mechanism, and the bridge is helped to recover the stable state more quickly.

Description

Technical Field

[0001] This utility model relates to the field of cable tray technology, specifically a high-strength fireproof and flame-retardant trough-type cable tray. Background Technology

[0002] Cable trays are rigid structural systems that closely support cables, consisting of straight sections, bends, tees, and crosses in trough, tray, or ladder configurations, as well as brackets (arm-type supports) and hangers. Cable trays are classified into trough, tray, ladder, and mesh structures, and are composed of supports, brackets, and installation accessories. Cable trays can be installed independently in buildings or attached to various building (structure) and pipe rack supports. However, existing cable trays have poor fire resistance and cannot provide good protection for the cables inside in a fire. At the same time, the cable trays themselves have poor seismic resistance, and frequent vibrations will reduce the service life of the cable trays, failing to meet people's usage needs.

[0003] In existing technologies, the bottom and surrounding areas of the cable tray body are equipped with rubber and damping foam, which can provide some shock absorption when subjected to impact. However, the rubber and damping foam mainly absorb vibration energy through their own elastic deformation. When the cable tray is vibrated, the rubber and damping foam are compressed, converting kinetic energy into stored elastic potential energy. However, they lack an effective way to dissipate energy. After the vibration ends, some of this stored elastic potential energy will be released again, which may cause the cable tray to produce continuous aftershocks, and even trigger resonance in some cases (such as when the external vibration frequency is close to the natural frequency of the rubber or damping foam), thus exacerbating the swaying of the cable tray. Utility Model Content

[0004] The purpose of this invention is to provide a high-strength, fire-resistant, flame-retardant trough-type cable tray to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model provides a high-strength fireproof and flame-retardant trough-type cable tray, including a cable tray body, a U-shaped frame installed on one side of the mounting column and located at the bottom of the cable tray body, wherein the U-shaped frame has multiple mounting cavities; a first spring damper fixedly installed on both sides of the outer wall of the cable tray body; a V-shaped member disposed inside the mounting cavity, wherein the cross-section of the V-shaped member is V-shaped; a mounting plate fixedly installed on the top and bottom of the V-shaped member, wherein the V-shaped member and the mounting plate form a buffer; and a telescopic plate fixedly installed between the two mounting plates, wherein the telescopic plate is composed of a fixed block and a telescopic block, and the other end of the first spring damper is fixedly installed on the fixed block of the telescopic plate.

[0006] Furthermore, a mounting block is fixedly mounted on one side of the mounting plate, and the mounting block is made of rubber.

[0007] Furthermore, a shock-absorbing sponge is fixedly installed on the inner bottom wall of the U-shaped frame, and the shock-absorbing sponge is located below the cable tray body.

[0008] Furthermore, a second spring damper is fixedly installed between the two mounting plates.

[0009] Furthermore, the cable tray body is provided with a fireproof and flame-retardant layer inside, which includes fiberglass. The fiberglass is fixedly installed inside the cable tray body, and one side of the fiberglass is provided with asbestos fiber, silicon material, and galvanized steel.

[0010] Furthermore, the outer wall of the cable tray body is coated with a fire-retardant coating.

[0011] Furthermore, a mounting column is fixedly installed on the outer wall of the cable tray body, and a support arm is fixedly installed on the inner wall of the mounting column.

[0012] Furthermore, the U-shaped frame is disposed on the top of the support arm, and the support arm is configured as a triangular frame.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. In this utility model, when the cable tray body sways left and right, the impact force compresses the first spring damper. The spring absorbs part of the energy, and the damper converts the impact energy into heat energy and other dissipation through the resistance of the internal damping medium, thereby slowing down the impact speed and force and preventing the energy from being fully returned to the cable tray when the spring rebounds, thus reducing the vibration amplitude and duration. When vibrating up and down, the V-shaped part is compressed by vertical pressure and the included angle becomes smaller. Because it is made of spring steel, it can quickly return to its original position. In conjunction with the second spring damper, the V-shaped part disperses and buffers the downward pressure through elastic deformation and multi-angle force, while the second spring damper stretches. The two work together to form an efficient dual energy absorption and dissipation mechanism, helping the cable tray to return to a stable state more quickly.

[0015] 2. In this utility model, fiberglass is composed of glass fiber and resin. The resin is flame-retardant, and the glass fiber is heat-resistant and does not easily burn when exposed to fire. It can isolate flames from heat sources and slow down the spread of fire, providing fire protection for cables in cable trays. Asbestos fiber has a high melting point and good thermal stability. It does not melt or burn when exposed to fire. Its fiber structure can block the spread of flames and fill and enhance the compactness of the fireproof and flame-retardant layer structure, blocking heat from being transferred to the cable. Siliceous materials such as quartz sand form a ceramic-like structure at high temperatures. They have a high fire resistance limit and strong heat insulation, which can block heat from reaching the cable. Galvanized steel has a certain degree of fire resistance. In the early stage of a fire, the zinc layer melts, absorbs heat, and retards the flame. It also forms a protective film to reduce the contact between oxygen and steel and inhibit oxidative combustion. It acts as a supporting structure in the fireproof and flame-retardant layer, enhancing the strength of the fireproof layer and participating in fire prevention. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the U-shaped frame structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the connection structure between the first spring damper and the telescopic plate in this utility model;

[0019] Figure 4 This is a schematic diagram of the connection structure between galvanized steel and silicon material in this utility model;

[0020] Figure 5 for Figure 1 Enlarged view of the structure at point A in the middle.

[0021] In the diagram: 1. Cable tray body; 2. U-shaped frame; 3. First spring damper; 4. V-shaped component; 5. Mounting plate; 6. Telescopic plate; 7. Second spring damper; 8. Mounting block; 9. Fireproof and flame-retardant layer; 901. Galvanized steel; 902. Silica material; 903. Asbestos fiber; 904. Fiberglass; 10. Shock-absorbing sponge; 11. Mounting column; 12. Support arm. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-5 This utility model provides a technical solution:

[0024] See Figures 1-5 As shown, a high-strength fire-resistant and flame-retardant trough-type cable tray includes a cable tray body 1, a U-shaped frame 2 installed on one side of a mounting column 11 and located at the bottom of the cable tray body 1, with multiple mounting cavities on the U-shaped frame 2; a first spring damper 3 fixedly installed on both sides of the outer wall of the cable tray body 1; a V-shaped member 4 located inside the mounting cavity, with a V-shaped cross-section; mounting plates 5 fixedly installed on the top and bottom of the V-shaped member 4, the V-shaped member 4 and the mounting plates 5 forming a buffer; and a telescopic plate 6 fixedly installed between the two mounting plates 5, the telescopic plate 6 consisting of a fixed block and a telescopic block, with the other end of the first spring damper 3 fixedly installed on the fixed block of the telescopic plate 6.

[0025] When the cable tray body 1 sways left and right, the impact force will compress the first spring damper 3. During the compression process, the spring will absorb some energy, and the damper will dissipate the impact energy into heat energy and other forms of energy through the resistance of the internal damping medium such as hydraulic oil or air, thereby slowing down the speed and force of the upward impact.

[0026] When the cable tray body 1 vibrates vertically, the V-shaped member 4 is subjected to vertical pressure and compressed, causing the included angle to decrease. Because it is made of spring steel, it quickly returns to its original position. The V-shaped member 4, in conjunction with the second spring damper 7, further buffers the downward pressure through elastic deformation and multi-angle force dispersion, thus achieving vertical shock absorption. The second spring damper 7 is stretched. This process not only involves the spring absorbing energy but also dissipating the impact energy through the damper, converting it into heat and other forms of energy. During lateral swaying, the damping portion of the first spring damper prevents the spring from returning all energy to the cable tray upon rebound, thereby reducing the amplitude and duration of the cable tray's vibration. During vertical vibration, the second spring damper 7 performs the same function. Furthermore, the V-shaped member 4 and the second spring damper 7 work together to form a more efficient dual energy absorption and dissipation mechanism, enabling the cable tray to recover to a stable state more quickly.

[0027] The energy absorption and dissipation mechanisms described above can significantly reduce the dynamic stress that the cable tray structure bears during vibration. Without these damping mechanisms, the weak points in the cable tray structure, such as weld points, connecting bolts, and the edges of plates, are prone to fatigue cracks under long-term dynamic stress. These cracks will continue to expand over time. Through damping mechanisms, the cable tray can be prevented from being damaged by frequent vibration impacts, thereby maintaining the high strength performance of the cable tray.

[0028] It should be noted that the U-shaped frame 2 is integrated with the cable tray body 1 through the first spring damper 3. The U-shaped frame 2 and the first spring damper 3 are installed in sections on the outer wall of the cable tray body 1. The cable tray body 1 can serve the purpose of buffering and shock absorption, and also save costs.

[0029] See Figure 3 A mounting block 8 is fixedly installed on one side of the mounting plate 5. The mounting block 8 is made of rubber.

[0030] The rubber material is relatively soft. The mounting block 8 is fixed on one side of the mounting plate 5, which can prevent the mounting plate 5 from directly and rigidly contacting other components. During the assembly of the cable tray or during long-term use, due to factors such as thermal expansion and contraction and vibration, the mounting plate 5 may rub or collide with the mounting cavity. The rubber mounting block 8 can act as a buffer layer to avoid hard contact between the mounting plate 5 and other components, and reduce surface wear and scratches.

[0031] See Figure 2 The inner bottom wall of the U-shaped frame 2 is fixedly installed with shock-absorbing sponge 10, which is located below the cable tray body 1.

[0032] When the cable tray body 1 is subjected to a downward impact force, such as an accidental collision during installation, bumps during transportation, or a heavy object falling from above in the usage environment, the shock-absorbing sponge 10 can effectively buffer these impact forces. The sponge has good elasticity and compressibility, and it will deform when subjected to pressure, converting the impact force into elastic potential energy inside the sponge, thereby reducing the instantaneous impact force borne by the cable tray body 1 and preventing the cable tray structure from deforming or being damaged due to excessive impact. This buffering effect is crucial for protecting the structural integrity of the cable tray body 1, especially for cable trays with high strength requirements, and can extend their service life.

[0033] See Figure 2-3 A second spring damper 7 is fixedly installed between the two mounting plates 5, and the V-shaped part 4 is made of spring steel.

[0034] The second spring damper 7 serves as a connection and support between the two mounting plates 5. During long-term use, cable trays may be affected by various factors, such as material expansion and contraction due to temperature changes, and variations in cable weight distribution. The second spring damper 7, through its elasticity and damping characteristics, automatically adjusts the relative position and stress state between the mounting plates 5, maintaining structural stability. For example, when one side of the cable tray tends to sag due to increased cable weight, the second spring damper 7 can provide upward support, preventing the cable tray structure from twisting or deforming due to uneven stress, ensuring that the high strength performance of the cable tray is fully utilized.

[0035] See Figure 4-5 The cable tray body 1 is provided with a fireproof and flame-retardant layer 9 inside. The fireproof and flame-retardant layer 9 includes fiberglass 904. The fiberglass 904 is fixedly installed inside the cable tray body 1. On one side of the fiberglass 904, there are asbestos fiber 903, silicon material 902 and galvanized steel 901.

[0036] Fiberglass 904 itself has good fire resistance. It is mainly composed of glass fiber and resin. The resin material itself has a certain degree of flame retardancy, and the glass fiber is resistant to high temperatures. When exposed to flames, Fiberglass 904 is not easily combusted, effectively isolating flames and heat sources and delaying the spread of fire. As part of the fire-retardant layer 9, it provides direct fire protection for the cables inside the cable tray body 1. Asbestos fiber 903 has a high melting point and good thermal stability. In the event of a fire, asbestos fiber 903 can withstand high temperatures without melting or burning. Its fibrous structure can, to a certain extent, prevent the spread of flames and can fill between other materials, enhancing the structural compactness of the entire fire-retardant layer 9, thereby better blocking heat transfer to the cables. Silicon material Materials like silica sand undergo physical and chemical changes at high temperatures, forming a ceramic-like structure. This structure has a high fire resistance limit and heat insulation performance. When a fire occurs, the silica material 902 can effectively block heat and prevent it from being quickly conducted to the cable, providing a relatively safe environment for the cable. Galvanized steel 901 itself has certain fire-resistant properties. The zinc layer melts first in the early stages of a fire, absorbing some heat and playing a certain role in flame retardancy. At the same time, the molten zinc layer can form a protective film on the steel surface, reducing the contact between oxygen and steel and inhibiting further oxidation and combustion of the steel. In the fire-retardant layer 9, galvanized steel 901 can act as a supporting structure, enhancing the strength of the entire fireproof layer and also participating in the fireproofing process.

[0037] See Figure 1 The outer wall of the cable tray body 1 is coated with a fireproof coating.

[0038] When a fire occurs, the fire-retardant coating can form a protective film on the surface of the cable tray. This protective film can effectively block the direct contact between the flames and the main material of the cable tray, delaying the damage of the fire to the cable tray body 1. At the same time, the fire-retardant coating can also prevent oxygen from contacting the cable tray material, inhibiting the continued combustion reaction. Since the three elements of combustion include combustibles, oxidizers, oxygen, and ignition sources, reducing the contact with oxygen can effectively reduce the possibility of the cable tray material burning and enhance the overall fire resistance and flame retardancy of the cable tray body 1.

[0039] See Figure 1 A mounting column 11 is fixedly installed on the outer wall of the cable tray body 1, and a support arm 12 is fixedly installed on the inner wall of the mounting column 11.

[0040] Mounting post 11 is fixed to the outer wall of the cable tray body 1, providing an additional support point for the cable tray. It can more effectively transfer the weight of the cable tray and the weight of the cables inside the cable tray to the ground or other supporting structures. In actual installation environments, especially for long cable tray bodies 1 or cable trays carrying heavy cables, mounting post 11 can share the load of the cable tray, preventing the cable tray from sagging or deforming due to its own weight and the weight of the cables. This ensures the levelness and stability of the cable tray, ensures that the cables can be laid in the normal position, and avoids adverse effects such as compression and stretching of the cables due to deformation of the cable tray.

[0041] See Figure 1 The U-shaped frame 2 is set on the top of the support arm 12, and the support arm 12 is set in the shape of a triangular frame.

[0042] The U-shaped frame 2 is placed on top of the support arm 12. This structural design allows the weight of the U-shaped frame 2 to be effectively transferred to the supporting foundation through the stable structure of the support arm 12. The contact method between the U-shaped frame 2 and the support arm 12 also helps to further optimize the stress distribution. Since the support arm 12 is a triangular frame, its top plane can provide a relatively flat and stable support surface for the U-shaped frame 2, allowing the U-shaped frame 2 to better cooperate with the support arm 12, ensuring the stability of the cable tray body 1 in the overall structure, and providing a reliable support environment for the safe laying of cables.

Claims

1. A high-strength fire-resistant and flame-retardant trough-type cable tray, comprising a cable tray body (1), characterized in that: U-shaped frame (2) is installed on one side of the mounting column (11) and located at the bottom of the cable tray body (1). The U-shaped frame (2) has multiple mounting cavities. The first spring damper (3) is fixedly installed on both sides of the outer wall of the cable tray body (1); V-shaped member (4) is disposed inside the mounting cavity, and the cross-section of the V-shaped member (4) is set to V shape; Mounting plate (5) is fixedly installed on the top and bottom of V-shaped part (4), and the V-shaped part (4) and mounting plate (5) form a buffer; The telescopic plate (6) is fixedly installed between two mounting plates (5). The telescopic plate (6) is composed of a fixed block and a telescopic block. The other end of the first spring damper (3) is fixedly installed on the fixed block of the telescopic plate (6).

2. The high-strength fire-resistant and flame-retardant trough-type cable tray as described in claim 1, characterized in that: An installation block (8) is fixedly installed on one side of the mounting plate (5), and the installation block (8) is made of rubber.

3. A high-strength fire-resistant and flame-retardant trough-type cable tray as described in claim 2, characterized in that: The inner bottom wall of the U-shaped frame (2) is fixedly equipped with a shock-absorbing sponge (10), which is located below the cable tray body (1).

4. A high-strength fire-resistant and flame-retardant trough-type cable tray as described in claim 3, characterized in that: A second spring damper (7) is fixedly installed between the two mounting plates (5).

5. A high-strength fire-resistant and flame-retardant trough-type cable tray as described in claim 4, characterized in that: The cable tray body (1) is provided with a fireproof and flame-retardant layer (9) inside. The fireproof and flame-retardant layer (9) includes fiberglass (904). The fiberglass (904) is fixedly installed inside the cable tray body (1). On one side of the fiberglass (904), there are asbestos fiber (903), silicon material (902), and galvanized steel (901).

6. A high-strength fire-resistant and flame-retardant trough-type cable tray as described in claim 5, characterized in that: The outer wall of the cable tray body (1) is coated with a fireproof coating.

7. A high-strength fire-resistant and flame-retardant trough-type cable tray as described in claim 6, characterized in that: The outer wall of the cable tray body (1) is fixedly installed with a mounting column (11), and the inner wall of the mounting column (11) is fixedly installed with a support arm (12).

8. A high-strength fire-resistant and flame-retardant trough-type cable tray as described in claim 7, characterized in that: The U-shaped frame (2) is set on the top of the support arm (12), and the support arm (12) is set in the shape of a triangular frame.

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