A connecting mechanism for galvanized bridge installation

Abstract

The utility model provides a kind of connecting mechanism for galvanized bridge installation, including galvanized bridge, the installation hole is opened corresponding on galvanized bridge and installation guard plate, the installation bolt passes through the installation hole of both in turn, the galvanized bridge and installation guard plate are fixed by tightening bolt, the limit rib plate is arranged in the inside of installation guard plate, the line body cylinder is fixedly installed in outside by the lifting plate, the jumper wire passes through the line body cylinder, and its both ends are connected with two galvanized bridges respectively by jumper connecting piece;The utility model is with the limit rib plate of "N" shape installation guard plate and bridge, saves artificial proofreading, improves installation efficiency;Lifting plate is matched with line body cylinder and is fully wrapped jumper wire, prevents hooking and scratches, guarantees electrical safety;Mechanical and electrical connection are integrated as a whole, layout is compact.

Description

Technical Field

[0001] This utility model belongs to the field of cable tray connection technology, and in particular relates to a connection mechanism for installing galvanized cable trays. Background Technology

[0002] Galvanized cable trays are an indispensable infrastructure for laying power and communication cables in buildings. The ease of connection, structural stability, and reliability of electrical connections directly affect the safety and lifespan of the entire cabling system.

[0003] Traditional galvanized cable trays are typically connected using bolts and connecting plates (i.e., protective plates). However, during actual installation, deviations in the mounting holes on the cable trays and connecting plates during processing and transportation can lead to inaccurate alignment between the holes. This necessitates repeated manual adjustments and alignment by installers, which is not only time-consuming and labor-intensive but also severely impacts construction efficiency. Furthermore, to meet electrical safety regulations, jumper wires must be installed between two connected galvanized cable trays to ensure good electrical continuity. However, currently, jumper wires, except for their connection to the galvanized cable trays at both ends, have their middle section completely exposed and extending outwards. In narrow cable tray layers, especially during subsequent cable laying, the exposed jumper wire is highly susceptible to contact or snagging with cables or tools. This can result in loose connections or, in severe cases, breakage of the jumper wire or damage to the insulation, causing grounding faults and posing serious safety hazards.

[0004] Therefore, it is essential to invent a connection mechanism for installing galvanized cable trays. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a connecting mechanism for installing galvanized cable trays, including galvanized cable trays, mounting holes, mounting bolts, mounting guard plates, limiting ribs, lifting plates, cable tubes, jumper wires, and jumper connectors. The galvanized cable trays and mounting guard plates are provided with corresponding mounting holes. The mounting bolts pass through the mounting holes of both, and the galvanized cable trays and mounting guard plates are fixed by tightening the bolts. The mounting guard plates are provided with limiting ribs on the inner side, and the cable tubes are fixedly installed on the outer side by the lifting plates. The jumper wires pass through the cable tubes, and their two ends are connected to the two galvanized cable trays respectively by the jumper connectors.

[0006] Preferably, the mounting plate has a "U"-shaped structure with its opening facing upwards. The inner surface of the mounting plate is tightly fitted to the outer surfaces of the two galvanized cable trays. The ends of the galvanized cable trays extend into the mounting plate and are fixedly connected to the mounting plate by the mounting bolts and nuts.

[0007] Preferably, a U-shaped limiting rib is provided on the inner middle side of the mounting guard plate. The height of the limiting rib is the same as the thickness of the galvanized cable tray, and it limits the end face of the galvanized cable tray.

[0008] Preferably, the support plate mounted on the outer side of the mounting guard plate has an L-shaped structure, the horizontal part of which is connected to the outer side of the mounting guard plate, and the vertical part of which is connected to the wire barrel.

[0009] Preferably, the wire barrel has a rounded rectangular structure, the hollow middle area thereof allows the jumper wire to pass through, and the middle part of the jumper wire is enclosed in the wire barrel.

[0010] Preferably, both ends of the jumper wire extend outward and are connected to the two corresponding galvanized bridge frames through the jumper connectors, and each of the galvanized bridge frames is provided with a through hole therethrough for allowing the jumper connector to be mounted.

[0011] Compared with the prior art, the utility model has the following beneficial effects: According to the utility model, by arranging the U-shaped mounting guard plate and the limiting rib plate inside, the ends of the two sections of bridge frames can be naturally guided and limited at correct positions during installation. The limiting rib plate not only plays a role of end face positioning, but also can effectively prevent the bridge frames from being misaligned in the fastening process, so that the mounting holes on the bridge frames and the guard plate can be automatically and quickly aligned, the tedious step of repeated manual checking is omitted, and the mounting efficiency is greatly improved.

[0012] In the utility model, the protection mechanism composed of the support plate and the wire barrel completely encloses the middle part of the jumper wire in the rounded rectangular wire barrel. This design can effectively prevent the jumper wire from being hooked and scratched when accidentally contacting with cables, tools or personnel, fundamentally avoids the electrical connection failure problem caused by the breakage of the jumper wire or the damage of the insulating layer, and greatly improves the reliability and safety of line connection.

[0013] According to the utility model, the whole mechanism is designed by integrating the mechanical connection and the electrical connection, all the components have clear functions and compact layout. The L-shaped support plate realizes stable transition from the guard plate to the wire barrel, and the rounded rectangular wire barrel avoids the damage risk caused by sharp corners while providing sufficient internal space. The design skillfully solves the actual pain points on the construction site, and has high popularization value. Brief Description of the Drawings

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

[0015] Figure 2 is a schematic diagram of the main view structure of the utility model.

[0016] Figure 3 is a schematic diagram of the structure of the mounting guard plate of the utility model.

[0017] In the figure: 1. Galvanized cable tray; 2. Mounting holes; 3. Mounting bolts; 4. Mounting guard plate; 5. Limiting ribs; 6. Support plate; 7. Cable tube; 8. Jumper wire; 9. Jumper connector. 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 connecting mechanism for installing galvanized cable trays, including a galvanized cable tray 1, mounting holes 2, mounting bolts 3, mounting guard plate 4, limiting ribs 5, lifting plate 6, cable tube 7, jumper wire 8, and jumper connector 9. The galvanized cable tray 1 and the mounting guard plate 4 are respectively provided with mounting holes 2. The mounting bolts 3 pass through the mounting holes 2 of both, and the galvanized cable tray 1 and the mounting guard plate 4 are fixed by tightening the bolts. The mounting guard plate 4 is provided with limiting ribs 5 on the inner side, and the cable tube 7 is fixedly installed on the outer side by the lifting plate 6. The jumper wire 8 passes through the cable tube 7, and its two ends are connected to two galvanized cable trays 1 respectively by the jumper connector 9.

[0021] Furthermore, the mounting plate 4 is made of hot-dip galvanized steel sheet, bent into a single piece, forming a "U"-shaped structure. Its opening faces upward, and its inner width matches the total outer width of the two mating galvanized cable trays 1. The inner surface of the mounting plate 4 is shot-blasted to ensure a tight fit with the outer surfaces of the two galvanized cable trays 1, forming a comprehensive protective enclosure. The ends of the two galvanized cable trays 1 extend into the mounting plate 4 from both ends, with an overlap length of 50-80mm. The coaxiality error between the pre-set mounting holes at the ends and the corresponding mounting holes on the mounting plate 4 is ≤0.3mm. The mounting bolts 3 are 8.8 grade high-strength galvanized bolts, which are passed through the mounting holes of the cable trays 1 and the mounting plate 4 in sequence, and then tightened with anti-loosening nuts (with spring washers and flat washers) to form a rigid connection between the two.

[0022] Furthermore, a U-shaped limiting rib 5 is fixed to the inner middle side of the mounting guard plate 4 by carbon dioxide gas shielded welding. The limiting rib 5 and the mounting guard plate 4 are made of the same hot-dip galvanized steel plate. The height of the limiting rib 5 is precisely matched with the thickness of the galvanized cable tray 1 (e.g., when the cable tray wall thickness is 2mm, the rib height is 2mm). Its two vertical edges are tightly fitted to the end faces of the two mating galvanized cable trays 1, forming a lateral limiting constraint, which can effectively limit the axial displacement of the cable tray 1 caused by vibration and temperature difference during installation or use, and ensure that the mating gap between the two cable trays is ≤1mm.

[0023] Furthermore, an "L"-shaped support plate 6 is welded to the middle of the outer side of the mounting plate 4. The support plate 6 is made of hot-dip galvanized steel plate. Its horizontal part is fixed to the outer side wall of the mounting plate 4 by full welding (the weld length is the same as the horizontal part). The welding strength can withstand a vertical tensile force of ≥500N. The top of the vertical part is connected to the bottom of the line tube 7 by continuous fillet welding to ensure that the line tube 7 is in a horizontal state and maintains a distance from the mounting plate 4, so as to avoid interference with the connecting bolts 3 of the cable tray 1.

[0024] Furthermore, the production line tube 7 is made of hot-dip galvanized steel sheet bent into a rounded rectangular structure, with a corner radius of R5mm at the four corners to prevent scratches on the internal jumper wires 8. The central hollow area of ​​the production line tube 7 is suitable for cross-sectional areas of 4-16mm². 2 The jumper wire 8 passes through; at both ends of its openings, there are 1mm thick neoprene rubber gaskets (with an inner diameter slightly larger than the jumper wire diameter) to ensure that the jumper wire 8 can be smoothly inserted and to prevent the edge of the wire body tube 7 from abrading the wire insulation layer. The middle part of the jumper wire 8 is completely wrapped by the wire body tube 7, and the wrapping length is the length of the wire body tube 7, so that the exposed part is only the connection section at both ends.

[0025] Furthermore, the jumper wire 8 uses multi-strand copper core flexible wire, wrapped with a weather-resistant PVC insulation layer. After stripping the insulation layer at both ends (15mm stripped length), copper terminals (matching the wire specifications) are crimped in, with a crimping pressure ≥12kN to ensure a low-impedance connection. The jumper connector 9 includes an M6 galvanized bolt, a lock nut, and a flat washer. The copper terminals at both ends of the jumper wire 8 are fixed to two galvanized cable trays 1 respectively through the jumper connector 9. Each galvanized cable tray 1 has a pre-set through hole with a diameter of 8mm at a distance of 100mm from the end. The bolt is passed through the through hole and tightened after connecting to the terminal (torque 15-20N・m), so that the jumper wire 8 and the cable tray 1 form a reliable conductive path.

[0026] The working principle is as follows: First, align the two galvanized cable trays 1 to be connected with the splicing direction so that their ends face each other. Then, put the "U"-shaped mounting plate 4 from the outside onto the joint area of ​​the two galvanized cable trays 1. Utilize the adhesion between the inner surface of the mounting plate 4 and the outer surface of the galvanized cable tray 1 to initially define their relative positions.

[0027] Next, adjust the depth of the end of the galvanized cable tray 1 into the mounting plate 4 so that the mounting hole 2 on the galvanized cable tray 1 is precisely aligned with the mounting hole 2 on the mounting plate 4. Then, pass the mounting bolts 3 through the aligned mounting holes 2 in sequence, and tighten them with anti-loosening nuts, spring washers, and flat washers. The locking force of the mounting bolts 3 will firmly connect the galvanized cable tray 1 and the mounting plate 4, thus achieving the initial fixation of the two galvanized cable trays 1.

[0028] Then, the limiting rib 5 on the inner side of the middle of the installation guard plate 4 will be attached to the end faces of the two galvanized cable trays 1 respectively. With the help of the compatibility between the limiting rib 5 and the thickness of the galvanized cable tray 1, a lateral limiting constraint is formed to prevent the galvanized cable tray 1 from axial displacement due to vibration, temperature difference and other factors during subsequent use, so as to ensure that the two galvanized cable trays 1 always maintain a precise docking state and avoid the expansion of the docking gap.

[0029] Meanwhile, the support plate 6 on the outside of the mounting plate 4 is fixed by welding to form a stable support structure. Its vertical part is firmly connected to the line tube 7, providing a reliable installation carrier for the line tube 7, keeping the line tube 7 horizontal and maintaining a reasonable distance from the mounting plate 4, avoiding positional interference with the mounting bolts 3, and reserving a safe space for the installation of the jumper wire 8.

[0030] Next, the jumper wire 8 is passed through the hollow area of ​​the wire body tube 7. The rounded rectangular structure of the wire body tube 7 and the neoprene gaskets at both ends form a full-wrap protection for the middle part of the jumper wire 8, preventing external objects from touching or snagging the jumper wire 8, while also preventing the edge of the wire body tube 7 from wearing down the insulation layer of the jumper wire 8.

[0031] Finally, the parts of the jumper wire 8 with the insulation layer removed and the copper terminals crimped are fixed to the two galvanized cable trays 1 respectively by the jumper connectors 9 (M6 galvanized bolts, lock nuts and flat washers). The jumper connectors 9 pass through the pre-set through holes of the galvanized cable trays 1 and are locked, so that the jumper wire 8 and the two galvanized cable trays 1 form a reliable conductive path, realizing the grounding and conduction function of the cable tray connection part.

[0032] 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 connecting mechanism for installing galvanized cable trays, characterized in that, comprising a galvanized cable tray (1), mounting holes (2), mounting bolts (3), a mounting guard plate (4), a limiting rib plate (5), a lifting plate (6), a wire barrel (7), a jumper wire (8) and a jumper connecting piece (9). The galvanized cable tray (1) and the mounting guard plate (4) are correspondingly provided with the mounting holes (2), the mounting bolts (3) sequentially pass through the mounting holes (2) of both, and the galvanized cable tray (1) and the mounting guard plate (4) are fixed by tightening the bolts. The inner side of the mounting guard plate (4) is provided with the limiting rib plate (5), the outer side of the mounting guard plate (4) is fixedly mounted with the wire barrel (7) via the lifting plate (6), the jumper wire (8) passes through the wire barrel (7), and two ends of the jumper wire are respectively connected with the two galvanized cable trays (1) via the jumper connecting piece (9).

2. The connecting mechanism for installing galvanized cable trays as described in claim 1, characterized in that: The mounting guard plate (4) is of a "U"-shaped structure with its opening facing upward, the inner surface of the mounting guard plate (4) is in close contact with the outer surfaces of the two galvanized cable trays (1), the ends of the galvanized cable trays (1) extend into the mounting guard plate (4), and are fixedly connected with the mounting guard plate (4) via the mounting bolts (3) and nuts.

3. The connecting mechanism for installing galvanized cable trays as described in claim 2, characterized in that: A "U"-shaped limiting rib plate (5) is arranged on the middle inner side of the mounting guard plate (4), the height of the limiting rib plate (5) is equal to the thickness of the galvanized cable tray (1), and the limiting rib plate limits the end face of the galvanized cable tray (1).

4. The connecting mechanism for installing galvanized cable trays as described in claim 3, characterized in that: The lifting plate (6) mounted on the outer side of the mounting guard plate (4) is of an "L"-shaped structure, the horizontal part of the lifting plate is connected with the outer side of the mounting guard plate (4), and the vertical part thereof is connected with the wire barrel (7).

5. The connecting mechanism for installing galvanized cable trays as described in claim 4, characterized in that: The wire barrel (7) is of a rounded rectangular structure, the middle hollow area of the wire barrel allows the jumper wire (8) to pass through, and the middle part of the jumper wire (8) is wrapped inside the wire barrel (7).

6. The connecting mechanism for installing galvanized cable trays as described in claim 5, characterized in that: Two ends of the jumper wire (8) extend outward, and are connected with the corresponding two galvanized cable trays (1) via the jumper connecting piece (9), and each of the galvanized cable trays (1) is provided with a through hole therethrough that allows the jumper connecting piece (9) to be mounted.

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