Groove type large-span cable bridge

Abstract

The application relates to a slot type large-span cable bridge, belonging to the technical field of cable bridges, which comprises a slot body and a cover plate, the slot body is provided with a bottom plate and two side plates, at least one longitudinal reinforcing rib extending along the length direction is arranged outside the side plate of the slot body, and a plurality of transverse reinforcing ribs distributed along the width direction are arranged inside the slot body. In the application, the U-shaped longitudinal reinforcing rib is welded outside the side plate of the slot body to enhance the longitudinal bending resistance, the U-shaped transverse reinforcing rib welded with the bottom plate and the side plate is arranged inside the slot body, the three are connected into a firm integral frame, the rigidity of the cross section and the bending and torsion resistance are greatly improved, in addition, the concave-convex reinforcing lines pressed on the bottom plate, the grid support formed by the longitudinal auxiliary reinforcing ribs and the transverse reinforcing ribs arranged on the inner side further strengthen the local rigidity and stability, and the waist-shaped hole flange with the anti-skid pad at the end ensures the firm and reliable connection between the multi-section cable bridges.

Description

Technical Field

[0001] This application relates to the field of cable tray technology, and in particular to a trough-type long-span cable tray. Background Technology

[0002] In traditional cable tray technology, conventional trough-type cable trays typically have small spans, making it difficult to meet the stringent requirements for cable laying in large-span spaces such as large industrial plants, logistics warehouses, and stadiums. Directly using traditional cable trays necessitates densely packed support points, which significantly increases the material and installation costs of support structures such as columns and hangers. It also affects the site's openness and space utilization. Furthermore, traditional structures are prone to excessive deflection and vibration under long-span conditions, posing a potential risk to the safe operation of cables. Utility Model Content

[0003] To address the aforementioned problems, this application provides a trough-type long-span cable tray.

[0004] This application provides a trough-type long-span cable tray, which adopts the following technical solution: A trough-type long-span cable tray includes a trough body and a cover plate. The trough body has a bottom plate and two side plates. At least one longitudinal reinforcing rib extending along the length direction is provided on the outer side of the side plate of the trough body. Multiple transverse reinforcing ribs distributed along the width direction are provided inside the trough body. The two ends of the transverse reinforcing ribs are connected to the two side plates. The span of the trough body is not less than 6 meters.

[0005] As a preferred technical solution of this application, the longitudinal stiffener is a U-shaped bent part and is fixed to the side plate by welding, and the longitudinal stiffener is symmetrically arranged on the outer side of each side plate.

[0006] As a preferred technical solution of this application, the transverse reinforcing rib is a U-shaped structure with its opening facing the inside of the groove. The two ends of the transverse reinforcing rib are welded to the side plate, and the middle part is welded to the bottom plate.

[0007] As a preferred technical solution of this application, the surface of the base plate is pressed with concave and convex reinforcing textures.

[0008] As a preferred technical solution of this application, the inner side of the base plate is further provided with at least one longitudinal auxiliary reinforcing rib extending along its length direction, and the longitudinal auxiliary reinforcing rib is intersected and connected with the transverse reinforcing rib.

[0009] As a preferred technical solution of this application, the end of the trough is provided with a splicing flange for splicing multiple sections of cable tray. The splicing flange has a waist-shaped hole and is connected by high-strength bolts. The contact surface of the splicing flange is provided with an anti-slip rubber pad.

[0010] As a preferred technical solution of this application, insulating and wear-resistant rubber pads are attached to the inner sides of the tank and the cover plate.

[0011] As a preferred technical solution of this application, the tank is made of high-strength steel plate with a thickness of 4mm to 6mm.

[0012] In summary, this application includes at least one of the following beneficial technical effects of trough-type long-span cable trays: This application not only welds U-shaped longitudinal reinforcing ribs to the outside of the side plates of the cable tray to enhance longitudinal flexural strength, but also sets U-shaped transverse reinforcing ribs welded to the bottom plate and side plates inside, connecting the three into a robust overall frame, which greatly improves the cross-sectional stiffness and bending and torsional resistance. In addition, the embossed reinforcing texture of the bottom plate, the longitudinal auxiliary reinforcing ribs added on the inside, and the grid support formed by the transverse reinforcing ribs further enhance the local stiffness and stability. The waist-shaped hole splicing flange with anti-slip pads at the ends ensures a firm and reliable connection between multiple sections of the cable tray, while the insulating and wear-resistant rubber pads pasted on the inside effectively protect the cables. In summary, these designs give the cable tray significant advantages such as high load-bearing capacity, small deformation, and high stability, and can greatly reduce the number of support points. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2 This application Figure 1 Internal structure diagram; Figure 3 This application Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of the partial bonding location of the insulating and wear-resistant rubber pad in this application.

[0014] Explanation of reference numerals in the attached drawings: 1. Tank body; 2. Cover plate; 11. Bottom plate; 12. Side plate; 3. Longitudinal reinforcing rib; 4. Transverse reinforcing rib; 5. Embossed reinforcing texture; 6. Longitudinal auxiliary reinforcing rib; 7. Splicing flange; 71. Waist-shaped hole; 72. High-strength bolt; 73. Anti-slip rubber pad; 8. Insulating and wear-resistant rubber pad. Detailed Implementation

[0015] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0016] See Figure 1-4A trough-type long-span cable tray includes a trough body 1 and a cover plate 2. The trough body 1 has a bottom plate 11 and two side plates 12. At least one longitudinal reinforcing rib 3 extending along its length direction is provided on the outer side of the side plate 12 of the trough body 1. Multiple transverse reinforcing ribs 4 distributed along its width direction are provided inside the trough body 1. The two ends of the transverse reinforcing ribs 4 are connected to the two side plates 12. The span of the trough body 1 is not less than 6 meters.

[0017] The trough-type large-span cable tray mainly consists of two parts: the trough body 1 and the cover plate 2. The trough body 1 is the main load-bearing structure for cable laying. Its cross-section is U-shaped and consists of a horizontal base plate 11 and two side plates 12 that are perpendicular to the base plate and extend upward. The cover plate 2 is used to cover the opening of the trough body 1 and is fixedly connected to the upper edge of the side plates 12 by fasteners such as buckles or bolts (not shown in the figure) to form a closed or semi-closed cable channel, which plays a role in protecting cables, preventing dust, and preventing interference. The core of this embodiment is that the cable tray is designed with a span (i.e., the distance between two support points) of not less than 6 meters to meet the needs of large spaces such as large factories and stadiums for wiring.

[0018] The longitudinal stiffener 3 is a U-shaped bent part and is fixed to the side plate 12 by welding. The longitudinal stiffener 3 is symmetrically arranged on the outer side of each side plate 12.

[0019] On the outer surfaces of the two side plates 12 of the tank body 1, at least one longitudinal reinforcing rib 3 extending along the length direction of the cable tray (i.e., the cable laying direction) is welded. The longitudinal reinforcing rib 3 is preferably a U-shaped bend, and its U-shaped opening can face the side plate or face away from the side plate. The longitudinal reinforcing rib 3 is firmly fixed to the side plate 12 by continuous welding or intermittent welding. The longitudinal reinforcing ribs 3 on the outer side of each side plate 12 can be symmetrically arranged, for example, one or two ribs are arranged on each side plate to effectively enhance the ability of the side plate to resist lateral bending and the overall tank body to resist longitudinal deflection.

[0020] The transverse reinforcing rib 4 has a U-shaped structure with its opening facing the inside of the tank 1. The two ends of the transverse reinforcing rib 4 are welded to the side plate 12, and the middle part is welded to the bottom plate 11.

[0021] Both the longitudinal stiffener 3 and the transverse stiffener 4 are U-shaped bent parts, which are easy to process and can provide good bending stiffness. However, the stiffener structure of this application is not limited to this. For example, the longitudinal stiffener 3 can also be a continuously rolled rib with a V-shaped, C-shaped or semi-circular cross section, or a raised rib formed by stamping. Similarly, the transverse stiffener 4 can also be replaced by a V-shaped bent part, an inverted T-shaped welded part, or a reinforcing protrusion formed directly by stamping from a steel plate. The concave and convex reinforcing texture 5 can also be different geometric shapes such as rhombus, wave, or array of circular protrusions.

[0022] Inside the tank 1, multiple transverse reinforcing ribs 4 are arranged along the width of the tank. These transverse reinforcing ribs 4 are arranged at certain intervals, and the spacing can be determined according to the design load and span. The transverse reinforcing ribs 4 themselves are U-shaped structures with their openings facing the internal space of the tank 1. During installation, the two ends of the transverse reinforcing ribs 4 (i.e. the tops of the two sides of the U-shape) are welded and fixed to the inner surfaces of the side plates 12 on both sides respectively. At the same time, the bottom of the transverse reinforcing ribs 4 (i.e. the bottom of the U-shape) is welded and fixed to the inner surface of the bottom plate 11 of the tank 1. This design tightly connects the bottom plate and the two side plates into an integral frame, which greatly enhances the bending and torsional stiffness of the tank cross section and prevents severe deflection or deformation under large spans.

[0023] The surface of the base plate 11 is pressed with concave and convex reinforcing textures 5.

[0024] On the surface of the base plate 11, embossed reinforcing patterns 5 are pre-pressed by rolling or stamping processes. These patterns can be rhomboid, circular, or other geometric shapes. Through the cold work hardening effect and the change in geometry, the planar stiffness of the base plate is significantly improved.

[0025] The inner side of the base plate 11 is also provided with at least one longitudinal auxiliary reinforcing rib 6 extending along its length direction, and the longitudinal auxiliary reinforcing rib 6 is intersected and connected with the transverse reinforcing rib 4.

[0026] On the inner surface of the base plate 11, at least one longitudinal auxiliary reinforcing rib 6 extending along its length is also provided. The reinforcing rib can be angle steel, channel steel or bent steel strip. The longitudinal auxiliary reinforcing rib 6 and the aforementioned transverse reinforcing rib 4 are arranged in a cross grid pattern in space. During installation, it is necessary to ensure that the longitudinal auxiliary reinforcing rib 6 is welded to the transverse reinforcing rib 4 at the intersection point, thereby forming a stable grid support system under the base plate.

[0027] The end of the trough 1 is provided with a splicing flange 7 for splicing multiple sections of cable tray. The splicing flange 7 has a waist-shaped hole 71 and is connected by high-strength bolts 72. The contact surface of the splicing flange 7 is provided with an anti-slip rubber pad 73.

[0028] To accommodate long-distance laying, multiple sections of cable trays need to be spliced ​​on-site. Splicing flanges 7 are installed at the ends (usually both ends) of the trough 1. Align the ends of the two cable tray sections 1 that need to be connected, ensuring that the contact surfaces of their respective splicing flanges 7 are aligned. Place an anti-slip rubber pad 73 between the contact surfaces of the two splicing flanges 7. This pad increases the friction of the connection surfaces, prevents slippage, and provides a certain degree of sealing and cushioning. The splicing flanges 7 have oblong holes 71. When aligning, ensure that the oblong holes 71 on the two flanges are aligned. Use high-strength bolts 72 to pass through the aligned oblong holes 71 and tighten them with high-strength nuts. The design of the oblong holes 71 allows for fine adjustments during installation to compensate for manufacturing and installation errors. When tightening, use a torque wrench and tighten in a diagonal sequence to the specified torque value to ensure a firm and reliable connection.

[0029] Insulating and wear-resistant rubber pads 8 are attached to the inside of the tank body 1 and the cover plate 2.

[0030] To prevent the cable from being worn or electrochemically corroded by the metal cable tray due to vibration and friction during laying and operation, an insulating and wear-resistant rubber pad 8 is attached to the inner surface of the trough 1 (including the inner walls of the bottom plate 11 and the side plate 12) and the inner surface of the cover plate 2. The rubber pad is fixed by high-strength adhesive, which not only protects the cable sheath, but also plays a role in insulation, shock absorption and noise reduction.

[0031] The tank body 1 is made of high-strength steel plate with a thickness of 4mm to 6mm.

[0032] This application not only welds U-shaped longitudinal reinforcing ribs 3 to the outside of the side plate 12 of the trough 1 to enhance longitudinal flexural strength, but also sets U-shaped transverse reinforcing ribs 4 welded to the bottom plate 11 and side plate 12 inside, connecting the three into a robust overall frame, greatly improving the cross-sectional stiffness and bending and torsional resistance. In addition, the grid support formed by the embossed reinforcing texture 5 pressed on the bottom plate 11, the longitudinal auxiliary reinforcing ribs 6 added on the inner side, and the transverse reinforcing ribs 4 further strengthens the local stiffness and stability. The waist-shaped hole 71 splicing flange 7 with anti-slip pads 73 at the end ensures a firm and reliable connection between multiple sections of the cable tray, while the insulating wear-resistant rubber pads 8 pasted on the inside of the trough 1 and cover plate 2 effectively protect the cables. In summary, these designs give the cable tray significant advantages such as high load-bearing capacity, small deformation, and high stability, and can greatly reduce the number of support points.

[0033] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A trough-type long-span cable tray, characterized in that, The trough (1) includes a trough body (1) and a cover plate (2). The trough body (1) has a bottom plate (11) and two side plates (12). At least one longitudinal reinforcing rib (3) extending along its length direction is provided on the outer side of the side plate (12) of the trough body (1). Multiple transverse reinforcing ribs (4) distributed along its width direction are provided inside the trough body (1). The two ends of the transverse reinforcing ribs (4) are connected to the two side plates (12). The span of the trough body (1) is not less than 6 meters.

2. The trough-type long-span cable tray according to claim 1, characterized in that, The longitudinal reinforcing rib (3) is a U-shaped bent part and is fixed to the side plate (12) by welding. The longitudinal reinforcing rib (3) is symmetrically arranged on the outer side of each side plate (12).

3. A trough-type long-span cable tray according to claim 1, characterized in that, The transverse reinforcing rib (4) is a U-shaped structure with its opening facing the inside of the groove (1). The two ends of the transverse reinforcing rib (4) are welded to the side plate (12), and the middle part is welded to the bottom plate (11).

4. A trough-type long-span cable tray according to claim 1, characterized in that, The surface of the base plate (11) is pressed with concave and convex reinforcing textures (5).

5. A trough-type long-span cable tray according to claim 1, characterized in that, The inner side of the base plate (11) is also provided with at least one longitudinal auxiliary reinforcing rib (6) extending along its length direction, and the longitudinal auxiliary reinforcing rib (6) is cross-connected with the transverse reinforcing rib (4).

6. A trough-type long-span cable tray according to claim 1, characterized in that, The end of the trough (1) is provided with a splicing flange (7) for splicing multiple sections of cable tray. The splicing flange (7) has a waist-shaped hole (71) and is connected by high-strength bolts (72). The contact surface of the splicing flange (7) is provided with an anti-slip rubber pad (73).

7. A trough-type long-span cable tray according to claim 1, characterized in that, Insulating and wear-resistant rubber pads (8) are attached to the inner sides of the trough (1) and the cover plate (2).

8. A trough-type long-span cable tray according to claim 1, characterized in that, The tank (1) is made of high-strength steel plate with a thickness of 4mm to 6mm.

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