A flexible, collapsible, long-span cable tray structure

Abstract

This utility model relates to a large-span cable tray structure, specifically an elastically collapsible large-span cable tray structure, including a first cable tray, a second cable tray, a top sliding shell, and a limiting seat. The limiting seat is slidably disposed between the first and second cable trays. One end of each of the first and second cable trays is provided with an arc-shaped groove. Each end of the limiting seat is provided with a central rotating column and a limiting fastening mechanism disposed on the central rotating column. This utility model, by adding an elastically collapsible adjustment mechanism between two adjacent cable tray sections, can respond quickly when the two cable tray sections sag due to external loads or their own weight. It uses springs and elastic rods to generate elastic traction force, applying a reverse traction force to the sag cable tray, forcibly correcting the linearity deviation of the cable tray, and keeping the two cable tray sections in a horizontal state at all times.

Description

Technical Field

[0001] This utility model relates to a large-span cable tray structure, specifically a flexible and collapsible large-span cable tray structure. Background Technology

[0002] Cable trays are channel-type structures used to support wires and cables. Their main function is to provide stable support and protection for cables, preventing them from being affected by external mechanical damage, environmental corrosion, and other factors. Large-span cable trays are cable laying devices that can provide support and protection for cables over a large distance, with a typical span of 6 to 9 meters or longer, reducing the number of support points.

[0003] When cable trays are installed with no or few supports in the middle of a long span, the weight of the long cables on them is relatively large. Especially for cable trays that need to cross between two buildings, when the length of the cable tray exceeds 15m, slight bending deformation will inevitably occur when crossing due to the resonance of cable weight and environmental wind force.

[0004] Most existing cable trays are made of metal. To cope with thermal expansion and contraction, expansion joints are often used. Expansion joints mainly adapt to the thermal expansion and contraction of the cable tray along its length by leaving a certain expansion gap. The sliding components inside the expansion joint passively compensate for temperature difference expansion and contraction, which can only achieve the expansion and contraction effect in the length direction. They cannot cope with the slight bending caused by the weight load of the cables and the resonance of environmental wind force in long-span cable trays. Once the metal cable tray sags due to being unable to bear the weight or resonance, it will cause plastic deformation of the cable tray and cannot return to its original shape. This will reduce the overall stability of the cable tray, keep the cable tray in a deformed state for a long time, and easily accelerate fatigue damage and shorten its service life. Utility Model Content

[0005] The purpose of this invention is to provide a flexible, collapsible, large-span cable tray structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A flexible, collapsible, long-span cable tray structure includes a first cable tray, a second cable tray, a top sliding shell, and a limiting seat. The limiting seat is slidably disposed between the first and second cable trays. One end of each of the first and second cable trays is provided with an arc-shaped groove. Each end of the limiting seat is provided with a central rotating column and a limiting fastening mechanism disposed on the central rotating column. The limiting fastening mechanism is provided with an elastic collapsible mechanism. The arc-shaped groove and the sliding limiting mechanism disposed on the elastic collapsible mechanism are connected.

[0008] The elastic collapsible long-span cable tray structure described above: the limiting and fastening mechanism includes a fixed cover disposed at one end of the central rotating column and a fastening bolt extending through the fixed cover, with a fastening nut fitted at each end of the fastening bolt.

[0009] The elastic collapsible long-span cable tray structure described above: the limiting and fastening mechanism further includes a first fixing kit and a second fixing kit disposed on the central rotating column, and the fastening bolt completely penetrates the first fixing kit and the second fixing kit.

[0010] The elastic collapsible long-span cable tray structure described above: the elastic collapsible mechanism includes two symmetrically arranged telescopic cylinders, which are respectively fixed on the first fixing kit and the second fixing kit, and the telescopic cylinders have sliding cavities inside.

[0011] The elastic collapsible long-span cable tray structure described above includes a sliding disc slidably disposed on the sliding cavity and a pull rod fixed to one end of the sliding disc, wherein a spring is disposed inside the sliding cavity.

[0012] The elastic collapsible large-span cable tray structure described above: the spring is sleeved on the pull rod, one end of the spring is fixed on the sliding cavity, and the other end of the spring is fixed on the sliding disc.

[0013] The elastic collapsible long-span cable tray structure described above: the sliding limiting mechanism includes a limiting spherical frame fixed to one side of the tie rod and a limiting post fixed to one end of the limiting spherical frame, the limiting post sliding on the arc-shaped groove.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: by adding an elastic collapsible adjustment mechanism between two adjacent cable tray sections, when the two cable tray sections sag due to external loads, their own weight, or environmental wind resonance, the elastic collapsible mechanism can respond quickly and provide support. It uses springs and elastic rods to generate elastic traction force to apply a reverse traction force to the sag cable tray. It provides elastic support while allowing the cable tray to undergo slight bending deformation as a whole, without changing the shape of the cable tray itself. After the load and resonance are reduced, it can return to its original shape or close to its original shape.

[0015] This utility model can flexibly adjust the length and elastic coefficient of the elastic collapsible mechanism according to actual engineering needs to adapt to cable tray systems of different spans. It can well meet the requirements of both short-distance bridging and ultra-large spans, thus improving the versatility and applicability of the product. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the overall structure and the top sliding shell structure of a large-span cable tray with elastic collapseability.

[0017] Figure 2 This is a schematic diagram of the overall structure of a large-span cable tray structure with elastic collapseability.

[0018] Figure 3 This is a schematic diagram of the overall disassembled structure of a large-span cable tray structure with elastic collapseability.

[0019] Figure 4 This is a schematic diagram of the first cable tray, the second cable tray, the limiting and fastening mechanism, the elastic collapse mechanism, and the limiting mechanism in a large-span cable tray structure with elastic collapseability.

[0020] Figure 5 This is a frontal plan view of a large-span cable tray structure that is elastic and collapsible.

[0021] Figure 6 This is a side view of the first cable tray and the limiting seat in a large-span cable tray structure that is elastic and collapsible.

[0022] Figure 7 This is a schematic diagram of the limiting seat, limiting fastening mechanism, elastic collapse mechanism, and limiting mechanism in a large-span cable tray structure with elastic collapseability.

[0023] Figure 8 This is a structural diagram showing the disassembly of the limiting and fastening mechanism, the elastic collapse mechanism, and the limiting mechanism in a large-span cable tray structure with elastic collapseability.

[0024] Figure 9 This is a schematic diagram of the elastic collapse mechanism and the limiting mechanism in a large-span cable tray structure with elastic collapse capability.

[0025] Figure 10 This is a schematic diagram of the internal structure of the elastic collapse mechanism and the limiting mechanism in a large-span cable tray structure with elastic collapse capability.

[0026] In the diagram: 1. First cable tray; 2. Second cable tray; 3. Top sliding shell; 4. Limiting seat; 5. Arc groove; 6. Central rotating column; 7. Fixing cover; 8. Fastening bolt; 9. Fastening nut; 10. First fixing kit; 11. Second fixing kit; 12. Telescopic cylinder; 13. Sliding cavity; 14. Sliding disc; 15. Spring; 16. Pull rod; 17. Limiting spherical frame; 18. Limiting column. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] Please see Figures 1-10 As an embodiment of this utility model, the elastic collapsible long-span cable tray structure includes a first cable tray 1, a second cable tray 2, a top sliding shell 3, and a limiting seat 4. The limiting seat 4 is slidably disposed between the first cable tray 1 and the second cable tray 2. One end of the first cable tray 1 and the second cable tray 2 is provided with an arc-shaped groove 5. Each end of the limiting seat 4 is provided with a central rotating column 6 and a limiting fastening mechanism disposed on the central rotating column 6. The limiting fastening mechanism is provided with an elastic collapsible mechanism. The arc-shaped groove 5 and the sliding limiting mechanism disposed on the elastic collapsible mechanism are connected.

[0029] In this embodiment, the elastically collapsible, large-span cable tray structure is supported by limiting seats 4 in the middle sections of the two cable trays under normal working conditions. A gap is reserved between the limiting seats 4 and the first cable tray 1 and the second cable tray 2. When the cable tray is subjected to the heavy load of long cables or the environmental wind force and resonates, due to the need to cross the middle gap with a large span, and in the absence of support points or a few support points, the first cable tray 1 and the second cable tray 2 connected by the limiting seats 4 can bend slightly (including bending downwards and upwards) without plastic deformation of the first cable tray 1 and the second cable tray 2 themselves. This allows the entire cable tray structure to sag slightly. At this time, the elastic collapsible mechanism and the sliding limiting mechanism work together to generate elastic traction force using the spring 15 and the elastic rod 16. The traction force acts on the arc groove 5 at one end of the cable tray to apply a reverse traction force to the sagning cable tray and provide elastic support. When the resonance caused by the environmental wind force weakens or disappears, the elastic support can restore the two sections of the cable tray to a near-horizontal state.

[0030] As a further embodiment of this utility model, the limiting and fastening mechanism includes a fixed cover 7 disposed at one end of the central rotating column 6 and a fastening bolt 8 extending through the fixed cover 7, with a fastening nut 9 fitted at each end of the fastening bolt 8.

[0031] In this embodiment, the fixing cover 7 has a pre-drilled hole, and the fastening bolt 8 is tightened by the through hole and the fastening nut 9.

[0032] As a further embodiment of this utility model, the limiting and fastening mechanism further includes a first fixing kit 10 and a second fixing kit 11 disposed on the central rotating column 6, and the fastening bolt 8 completely penetrates the first fixing kit 10 and the second fixing kit 11.

[0033] In this embodiment, the central rotating column 6 is the rotation center axis of the first fixing kit 10 and the second fixing kit 11. Both the first fixing kit 10 and the second fixing kit 11 have openings. During assembly, the second fixing kit 11 is passed through one side of the first fixing kit 10, and both are simultaneously fitted onto the central rotating column 6. Then, they are fixed by fastening bolts 8 and fastening nuts 9.

[0034] As a further embodiment of this utility model, the elastic collapse mechanism includes two symmetrically arranged telescopic cylinders 12, which are respectively fixed on the first fixing kit 10 and the second fixing kit 11, and the telescopic cylinder 12 has a sliding cavity 13 inside.

[0035] In this embodiment, the two telescopic cylinders 12 are symmetrically designed and are fixed at one end of the telescopic cylinder 12 respectively, and the sliding cavity 13 is cylindrical.

[0036] As a further embodiment of this utility model, the elastic collapse mechanism further includes a sliding disk 14 slidably disposed on the sliding cavity 13 and a pull rod 16 fixed to one end of the sliding disk 14, and a spring 15 is disposed inside the sliding cavity 13.

[0037] In this embodiment, the sliding disk 14 is in close contact with the inner wall of the sliding cavity 13, and the spring 15 is disposed on one side of the sliding disk 14.

[0038] As a further embodiment of this utility model, the spring 15 is sleeved on the pull rod 16, one end of the spring 15 is fixed on the sliding cavity 13, and the other end of the spring 15 is fixed on the sliding disk 14.

[0039] In this embodiment, the spring 15 is sleeved on the pull rod 16, and can extend or retract the pull rod 16 by applying an elastic force to the sliding disk 14.

[0040] As a further embodiment of this utility model, the sliding limiting mechanism includes a limiting ball frame 17 fixed to one side of the pull rod 16 and a limiting post 18 fixed to one end of the limiting ball frame 17, wherein the limiting post 18 slides on the arc groove 5.

[0041] In this embodiment, when the first cable tray 1 and the second cable tray 2 sag due to external loads or their own weight during use, the first cable tray 1 and the second cable tray 2 will sway slightly in the gap reserved between them and the limiting seat 4. At this time, the linearity of the first cable tray 1 and the second cable tray 2 on the limiting seat 4 will deviate, and the position of the arc groove 5 will change. At this time, the limiting post 18 will be dragged, and then the pull rod 16 will extend outward. At this time, the internal spring 15 will be compressed. The elastic force of the spring 15 is fast enough to respond quickly. The elastic traction force generated by the spring 15 and the elastic pull rod 16 will apply a reverse traction force to the sag cable tray, which has the tendency to elastically correct the linearity deviation of the cable tray. Without changing the shape of the first cable tray 1 and the second cable tray 2 themselves, the two cable trays will always have an elastic force to keep them in a horizontal state.

[0042] Additionally, the deflection path of the limiting post 18 at one end of the elastic collapse mechanism under conditions of no external force is shown in the appendix. Figure 5 The small dotted circle in the diagram, and the large circle containing the arc-shaped groove 5 are shown in the appendix. Figure 5 The large dotted circle in the middle; the small dotted circle is tangent to the large dotted circle, thus ensuring that when the cable tray deflects, the movement trajectory of the arc groove 5 and the limiting post 18 is misaligned, thereby generating a pulling force on the limiting post 18.

[0043] The above embodiments are exemplary and not restrictive. Therefore, without departing from the spirit or basic characteristics of this utility model, any technical solutions that can be implemented in other specific forms are included in this utility model.

Claims

1. A resiliently collapsible long-span cable tray structure comprising a first cable tray (1), a second cable tray (2), a top sliding shell (3) and a limiting seat (4), characterized in that, The limiting seat (4) is slidably disposed between the first cable tray (1) and the second cable tray (2). One end of the first cable tray (1) and the second cable tray (2) is provided with an arc groove (5). Each end of the limiting seat (4) is provided with a central rotating column (6) and a limiting fastening mechanism disposed on the central rotating column (6). The limiting fastening mechanism is provided with an elastic collapse mechanism. The arc groove (5) and the sliding limiting mechanism disposed on the elastic collapse mechanism are connected.

2. The elastic collapsible large-span cable bridge structure according to claim 1, characterized in that, The limiting and fastening mechanism includes a fixed cover (7) disposed at one end of the central rotating column (6) and a fastening bolt (8) extending through the fixed cover (7), with a fastening nut (9) fitted at each end of the fastening bolt (8).

3. The elastic collapsible large-span cable bridge structure according to claim 2, characterized in that, The limiting fastening mechanism also includes a first fixing kit (10) and a second fixing kit (11) disposed on the central rotating column (6), and the fastening bolt (8) completely penetrates the first fixing kit (10) and the second fixing kit (11).

4. The elastically collapsible, large-span cable tray structure according to claim 3, characterized in that, The elastic collapse mechanism includes two symmetrically arranged telescopic cylinders (12), which are respectively fixed on the first fixing kit (10) and the second fixing kit (11). The telescopic cylinders (12) have a sliding cavity (13) inside.

5. The elastically collapsible, large-span cable tray structure according to claim 4, characterized in that, The elastic collapse mechanism also includes a sliding disk (14) slidably disposed on the sliding cavity (13) and a pull rod (16) fixed to one end of the sliding disk (14), and a spring (15) is disposed inside the sliding cavity (13).

6. The elastically collapsible, large-span cable tray structure according to claim 5, characterized in that, The spring (15) is sleeved on the pull rod (16), one end of the spring (15) is fixed on the sliding cavity (13), and the other end of the spring (15) is fixed on the sliding disk (14).

7. The elastically collapsible, large-span cable tray structure according to claim 6, characterized in that, The sliding limiting mechanism includes a limiting ball frame (17) fixed on one side of the pull rod (16) and a limiting post (18) fixed on one end of the limiting ball frame (17), the limiting post (18) sliding on the arc groove (5).

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