Fire-fighting power cabinet quick wiring bridge

Abstract

This utility model provides a quick-connect cable tray for a fire-fighting power control box, including a cable tray plate. The ends of the cable tray plates are in contact with each other, and connecting plates are respectively provided on both sides of the contact point. A compensation plate is provided between the connecting plate and the cable tray plate. Corresponding mounting holes are opened through the three plates. Mounting bolts are passed through the mounting holes in the three plates in sequence and tightened with mounting nuts to secure the three plates together. Each connecting plate has a cable routing groove on its inner surface and two opposing galvanized studs are installed. The end of the jumper wire is fitted onto the corresponding galvanized stud and equipped with a jumper washer assembly. The galvanized studs pass through the cable tray plate and are tightened with anti-slip nuts. This utility model houses the jumper wire in the cable routing groove between the connecting plate and the cable tray plate. The middle part is restricted by the compensation plate and the connecting plate, reducing the risk of fire damage and impact, and ensuring stable connection. The integrated design of the galvanized studs helps with installation positioning, prevents loss, and improves efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of cable tray technology, and in particular relates to a quick-connect cable tray for fire-fighting power control boxes. Background Technology

[0002] As a key component of the fire protection system, the fire-fighting power control box plays a crucial role in providing a stable power supply to various fire-fighting equipment, such as fire pumps, smoke exhaust fans, and emergency lighting. Ensuring the continuous and reliable operation of the fire-fighting power control box is vital for protecting lives and minimizing property damage in emergencies such as fires.

[0003] Fire-resistant cable trays are commonly used to ensure electrical connections between the main fire-fighting power distribution box and various fire-fighting equipment. These trays not only effectively protect cables from mechanical damage, chemical corrosion, and environmental interference, but also make wiring more standardized and orderly, facilitating later inspection and maintenance. Each cable tray is equipped with a bridging electrical connection to ensure electrical continuity throughout the entire system, guaranteeing stable and safe current transmission under all circumstances. Furthermore, proper bridging connections are crucial for effective grounding of the cable tray system, effectively preventing fire risks caused by electrical faults.

[0004] However, existing traditional jumper electrical connections are generally achieved using galvanized bolts and jumper wires. This method has many drawbacks. First, jumper wires typically lack fire resistance and are exposed, making them highly susceptible to damage from open flames in a fire environment. Damage to the jumper wires directly affects the electrical continuity and grounding reliability of the cable tray system, potentially leading to partial or complete paralysis of the fire protection power system. Second, exposed jumper wires are very prone to contact or impact with external objects during daily use. Even minor collisions can cause the jumper wire connections to loosen or break, increasing the workload and difficulty of daily maintenance and potentially posing serious safety hazards at critical moments, failing to meet the stringent stability and reliability requirements of fire protection power systems.

[0005] Therefore, it is essential to invent a quick-connect cable tray for fire-fighting power control boxes. Utility Model Content

[0006] To address the aforementioned technical problems, this utility model provides a quick-connect cable tray for a fire-fighting power control box, comprising a cable tray plate, connecting plates, compensating plates, mounting holes, mounting bolts, mounting nuts, cable trays, galvanized studs, jumper wires, jumper gasket assemblies, and anti-slip nuts. The ends of two cable tray plates are butt-to-butt-to-contact, with connecting plates on both sides of the butt joint. A compensating plate is positioned between the connecting plates and the cable tray plates. Corresponding mounting holes are formed through all three components. The mounting bolts pass through these holes sequentially and are tightened with mounting nuts, ensuring a tight and secure installation. Each connecting plate has a cable tray on its inner surface and two opposing galvanized studs are installed thereon. The end of the jumper wire is fitted onto the corresponding galvanized stud and equipped with a jumper gasket assembly. The galvanized studs pass through the cable tray plates and are tightened with the anti-slip nuts.

[0007] Preferably, the through mounting hole on the connecting plate is located between two oppositely arranged galvanized studs, and the compensation plate is also located between the two galvanized studs. The compensation plate has a rectangular plate structure, and its inner surface is in close contact with the cable tray plate and its side surface.

[0008] Preferably, the inner side of the connecting plate is provided with a U-shaped cable tray, and galvanized studs are installed at both ends of the cable tray. The jumper wire can be accommodated by the cable tray. The jumper wire located in the middle part of the cable tray is located between the compensation plate and the connecting plate, and is restricted and blocked by both.

[0009] Preferably, the jumper terminal located at the end of the cable tray is not restricted or blocked by the compensation plate. The jumper terminal is provided with a jumper pad assembly on its outer side. The jumper pad assembly is a claw pad, which helps the jumper terminal to make tight contact with the side of the corresponding cable tray plate. The two ends of the jumper are electrically connected to the two corresponding cable tray plates through the jumper pad assembly.

[0010] Preferably, each of the cable tray plates has a cross-connection hole through the side of the joint, allowing the galvanized stud to pass through. After the galvanized stud passes through the cross-connection hole of the corresponding cable tray plate, a washer and a spring washer are fitted on it and the anti-slip nut is tightened.

[0011] Compared with the prior art, the present invention has the following beneficial effects: This invention effectively protects the jumper wire by placing it between the connecting plate and the cable tray plate and storing it in a cable duct. Compared to traditional exposed jumper wires, this significantly reduces the risk of them being exposed to high temperatures and direct flames in a fire environment, improves their fire resistance, and ensures that the electrical connection of the cable tray system remains stable during a fire, thus guaranteeing the normal operation of the fire protection power system.

[0012] This utility model features an innovative one-piece design for its galvanized studs, which are securely fixed to the inside of the connecting plate. This design not only allows for precise foundation positioning and calibration during installation, effectively improving installation accuracy, but also cleverly avoids the inconvenience of needing to prepare scattered galvanized bolts in traditional installation methods. It prevents bolts from being easily lost during construction, significantly reduces installation steps, greatly increases installation speed, and significantly improves construction efficiency, providing great convenience for the installation of quick-connect cable trays for fire-fighting power control boxes.

[0013] This utility model features a U-shaped cable tray that houses the jumper wires. Except for the ends, the jumper wires located in the middle of the cable tray are restricted and blocked by the compensation plate and connecting plate, effectively preventing direct contact and collision between the jumper wires and external objects, protecting them from accidental damage, extending their service life, reducing system failures caused by jumper wire damage, and improving the stability of the fire protection power system. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is an exploded structural diagram of the present invention.

[0016] Figure 3 This is a schematic diagram of the inner side of the connecting plate of this utility model.

[0017] In the picture: 1. Cable tray plate; 2. Connecting plate; 3. Compensating plate; 4. Mounting hole; 5. Mounting bolt; 6. Cable tray; 7. Galvanized stud; 8. Jumper wire; 9. Jumper gasket assembly; 10. Anti-slip nut; 11. Detailed Implementation

[0018] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below. 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 should fall within the protection scope of the present invention.

[0019] In the description of the embodiments, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the present invention and for 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 the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of the utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in the present utility model based on the specific circumstances.

[0020] As attached Figure 1 To be continued Figure 3 As shown: This utility model provides a quick-connect cable tray for a fire-fighting power control box, comprising a cable tray plate 1, a connecting plate 2, a compensating plate 3, mounting holes 4, mounting bolts 5, mounting nuts 6, a cable tray 7, galvanized studs 8, jumper wires 9, jumper gasket assemblies 10, and anti-slip nuts 11. The ends of two cable tray plates 1 are butt-to-button contact each other, with connecting plates 2 respectively provided on both sides of the butt joint. A compensating plate 3 is provided between the connecting plate 2 and the cable tray plate 1. Corresponding mounting holes 4 are formed through all three. The mounting bolts 5 pass through the mounting holes 4 in sequence and are tightened with the mounting nuts 6, ensuring a tight and secure installation. Each connecting plate 2 has a cable tray 7 on its inner surface and two opposing galvanized studs 8 are installed thereon. The end of the jumper wire 9 is fitted onto the corresponding galvanized stud 8 and equipped with a jumper gasket assembly 10. The galvanized stud 8 passes through the cable tray plate 1 and is tightened with the anti-slip nuts 11.

[0021] Furthermore, the connecting plate 2 is made of galvanized steel sheet, with mounting holes 4 penetrating its surface between two opposing galvanized studs 8. The diameter of the mounting holes 4 matches the diameter of the mounting bolts 5, forming a clearance fit. The compensation plate 3 is also located between the two galvanized studs 8, and it uses a rectangular plate structure of the same material as the connecting plate 2, but its width is smaller than that of the connecting plate 2. The inner surface of the compensation plate 3 is polished to ensure a tight fit with the side of the cable tray plate 1. After the mounting bolts 5 pass through the mounting holes 4 on the cable tray plate 1, the compensation plate 3, and the connecting plate 2 in sequence, and are then locked in place with the mounting nuts 6, the compensation plate 3 fills the gap between the cable tray plate 1 and the connecting plate 2, enhancing the tightness of the connection between the three.

[0022] Furthermore, the inner surface of the connecting plate 2 is integrally formed with a U-shaped cable groove 7 through a stamping process. The depth of the cable groove 7 is 10-15mm, and the width is slightly larger than the diameter of the jumper wire 9, which can stably house the jumper wire 9. Two opposing galvanized studs 8 are welded and fixed to the bottom of the cable groove 7 at both ends. The axis of the galvanized studs 8 is perpendicular to the length direction of the cable groove 7. The jumper wire 9 is made of copper braided strip, and its entire body can be embedded in the cable groove 7 for storage. The jumper wire 9 located in the middle part of the cable groove 7 is exactly between the compensation plate 3 and the connecting plate 2. When the compensation plate 3 and the connecting plate 2 are locked together by the mounting bolts 5, this part of the jumper wire 9 will be clamped and restricted by the two to prevent movement.

[0023] Furthermore, since the compensation plate 3 only covers the middle area of ​​the cable tray 7, the end of the jumper wire 9 located at the end of the cable tray 7 is not restricted or blocked by the compensation plate 3. A jumper gasket assembly 10 is fitted onto the outer side of the jumper wire 9 end. This jumper gasket assembly 10 has a claw-like structure, made of elastic metal material. Its claws can tightly engage with the jumper wire 9 end, and its flat portion can fit against the side of the corresponding cable tray plate 1. During the process of the galvanized stud 8 passing through and locking the cable tray plate 1, the jumper gasket assembly 10 is deformed by compression, thereby assisting the jumper wire 9 end in forming a tight conductive contact with the side of the corresponding cable tray plate 1. Ultimately, the two ends of the jumper wire 9 are stably connected to the two corresponding cable tray plates 1 through the jumper gasket assembly 10.

[0024] Furthermore, each cable tray plate 1 has a bridging hole drilled through its side at the joint. The diameter of the bridging hole is 0.5-1mm larger than the diameter of the galvanized stud 8 to facilitate the smooth passage of the galvanized stud 8. After the galvanized stud 8 passes through the corresponding bridging hole of the cable tray plate 1, a flat washer adapted to the galvanized stud 8 is first placed on the side of the cable tray plate 1 away from the connecting plate 2, followed by a spring washer, and finally the anti-slip nut 11 is tightened. The anti-slip nut 11 adopts a nylon locking nut structure, which, in conjunction with the spring washer, effectively prevents loosening. By tightening the anti-slip nut 11, the cable tray plate 1, the connecting plate 2, and the end of the bridging wire 9 can be stably connected as a whole, ensuring the long-term reliability of the connection structure.

[0025] Furthermore, the outer surfaces of both the cable tray plate 1 and the connecting plate 2 are coated with a fireproof coating, and the inner surface of the connecting plate 2 is coated with a heat-insulating coating.

[0026] The working principle is as follows: First, the ends of the two cable tray plates 1 are joined together. Connecting plates 2 are placed on both sides of the joint, and a compensating plate 3 is placed between the connecting plate 2 and the cable tray plate 1 to align the mounting holes 4 of the three. Second, the mounting bolts 5 are passed through the aligned mounting holes 4 in sequence, and the mounting nuts 6 are tightened to secure the cable tray plate 1, the compensating plate 3, and the connecting plate 2. The compensating plate 3 can fill gaps and enhance the connection stability.

[0027] In addition, the jumper wire 9 is embedded in the wiring groove 7 inside the connecting plate 2, and its two ends are respectively fitted onto the galvanized studs 8 at both ends of the wiring groove 7. Then, the jumper gasket assembly 10 is installed on the outside of the ends of the jumper wire 9.

[0028] The galvanized stud 8 is passed through the bridging hole on the cable tray plate 1. Flat washers and spring washers are then placed on the outside of the cable tray plate 1 in sequence, and finally the anti-slip nut 11 is tightened. During this process, the bridging washer assembly 10 is compressed and deformed, and the end of the auxiliary bridging wire 9 makes tight contact with the side of the cable tray plate 1, realizing the bridging electrical connection between the two cable tray plates 1 and ensuring the electrical continuity of the cable tray system.

[0029] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solution described in this utility model, or by designing a similar technical solution inspired by the technical solution described in this utility model, falls within the protection scope of this utility model.

Claims

1. A quick-connect cable tray for a fire-fighting power control unit, characterized in that, It includes a bridge plate (1), a connecting plate (2), a compensating plate (3), mounting holes (4), mounting bolts (5), mounting nuts (6), a wiring groove (7), galvanized studs (8), jumper wires (9), jumper gasket assemblies (10) and anti-slip nuts (11). The ends of the two bridge plates (1) are butt-jointed and in contact with each other. The connecting plates (2) are respectively arranged on both sides of the butt-joint. A compensating plate (3) is arranged between the connecting plate (2) and the bridge plate (1). Corresponding mounting holes (4) are drilled through the three components. The mounting bolts (5) pass through the mounting holes (4) drilled through the three components in sequence, and the mounting nuts (6) are tightened to firmly fix and install the three components together; On the inner surface of each connecting plate (2), a wiring groove (7) is arranged, and two opposite galvanized studs (8) are installed. The ends of the jumper wires (9) are sleeved on the corresponding galvanized studs (8), and a jumper gasket assembly (10) is assembled. The galvanized studs (8) pass through the bridge plate (1) and the anti-slip nuts (11) are tightened.

2. The quick-connect cable tray for a fire-fighting power control box as described in claim 1, characterized in that: The mounting holes (4) drilled through the connecting plate (2) are located between the two relatively arranged galvanized studs (8). The compensating plate (3) is also located between the two galvanized studs (8). The compensating plate (3) is a rectangular plate structure, and its inner surface is in close contact with the side surface of the bridge plate (1).

3. The quick-connect cable tray for a fire-fighting power control box as described in claim 2, characterized in that: A "U"-shaped wiring groove (7) is formed on the inner side of the connecting plate (2). Galvanized studs (8) are installed at both ends of the wiring groove (7). The jumper wires (9) can be accommodated by the wiring groove (7). The jumper wires (9) in the middle part of the wiring groove (7) are located between the compensating plate (3) and the connecting plate (2) and are restricted and blocked by the two.

4. The quick-connect cable tray for a fire-fighting power control box as described in claim 3, characterized in that: The ends of the jumper wires (9) at the end positions of the wiring groove (7) are not restricted and blocked by the compensating plate (3). The jumper gasket assemblies (10) are arranged on the outer sides of the ends of the jumper wires (9). The jumper gasket assemblies (10) are claw gaskets, which assist the ends of the jumper wires (9) to be in close contact with the side surfaces of the corresponding bridge plates (1). The two ends of the jumper wires (9) are cross-connected and electrically connected to the two corresponding bridge plates (1) through the jumper gasket assemblies (10).

5. The quick-connect cable tray for a fire-fighting power control box as described in claim 4, characterized in that: On the side surface of the butt-joint of each bridge plate (1), a cross-connection hole allowing the galvanized studs (8) to pass through is drilled through. After the galvanized studs (8) pass through the cross-connection holes of the corresponding bridge plates (1), washers and spring washers are sleeved and the anti-slip nuts (11) are tightened.

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