A ladder type cable bridge with convenient replacement of fireproof partition

By using fastening bolts and fiberglass fireproof partitions in the ladder-type cable tray design, the problems of fireproof partitions being damaged during cable laying and easily damaged in humid environments are solved, enabling convenient replacement of fireproof partitions and improving fire resistance.

CN224537722UActive Publication Date: 2026-07-21POWERCHINA HUADONG ENG CORP LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
POWERCHINA HUADONG ENG CORP LTD
Filing Date
2025-07-10
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

The fireproof partitions of existing ladder-type cable trays are easily damaged during cable laying and are prone to damage and loss of fireproof performance in humid environments, making later replacement difficult.

Method used

The ladder-type cable tray is fixed to the base plate using fastening bolts. Fireproof partitions are located at the bottom of the cable tray and the top of the base plate. Cables are laid on the top of the cable tray. The fireproof partitions and cable positions do not interfere with each other and are easy to clean and replace in humid environments. The fireproof partitions are made of fiberglass.

Benefits of technology

It protects the fireproof partition from damage during cable laying, improves the fire resistance and corrosion resistance of the fireproof partition, simplifies the replacement process, and enhances the practicality and maintainability of the cable tray.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a cable bridge technical field's convenient replacement fireproof partition's step type cable bridge, including step type bridge, the bottom of both sides of step type bridge all is through a plurality of fastening bolts and has the bottom plate of screwing, the top of bottom plate places fireproof partition, fireproof partition is located between the bottom of step type bridge and the top of bottom plate. The utility model discloses through the bottom of step type bridge and the top of bottom plate between the placement of fireproof partition, one aspect in the cable laying process will not damage fireproof partition, another aspect when meeting air humid, easy to form ponding in the cable bottom, also be convenient for fireproof partition cleaning and replacement, improved the practicability of bridge.
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Description

Technical Field

[0001] This utility model relates to the technical field of cable trays, and in particular to a ladder-type cable tray with easily replaceable fireproof partitions. Background Technology

[0002] Cable trays are devices used to fix and place cables. They are widely used in industries such as construction, communications, chemical engineering, and transportation. Ladder-type cable trays are best suited for laying computer cables, communication cables, thermocouple cables, and other control cables for highly sensitive systems. They offer good shielding against interference and protection for cables in highly corrosive environments. To improve the fire resistance of cable trays, fireproof partitions are usually installed at the bottom.

[0003] Currently, the existing arrangement of ladder-type cable trays and fireproof partitions involves laying the fireproof partitions uniformly at the bottom of the cable tray, and then laying the cables on top of them. The fireproof partitions are mostly composite sandwich structures, which generally have low strength and are frequently damaged unintentionally during cable laying on site. Furthermore, the fireproof partitions are prone to condensation in humid environments, and long-term condensation can easily damage the partitions and cause them to lose their fireproof performance. Since the partitions are laid inside the cable tray and completely covered by the cables, replacement later would be very difficult and highly unlikely. Utility Model Content

[0004] To address the problem mentioned above where existing fireproof partitions are uniformly laid at the bottom of the cable tray, with cables laid on top, and the fireproof partitions are often unintentionally damaged during cable laying, making replacement difficult later, this utility model provides a ladder-type cable tray that facilitates the replacement of fireproof partitions.

[0005] This utility model provides a ladder-type cable tray with convenient replacement of fireproof partitions, using the following technical solution:

[0006] A ladder-type cable tray with easy replacement of fireproof partitions includes a ladder-type cable tray, on both sides of the bottom of the ladder-type cable tray, a base plate is screwed to it by multiple fastening bolts, and a fireproof partition is placed on the top of the base plate, the fireproof partition being located between the bottom of the ladder-type cable tray and the top of the base plate.

[0007] By adopting the above technical solution, the ladder-type cable tray is fixedly connected to the base plate with multiple fastening bolts, and a fireproof partition is placed on top of the base plate. When laying cables, the cables are laid on top of the ladder-type cable tray. The fireproof partition gives the cable tray a certain fire resistance. Since the cable and fireproof partition are arranged in a way that does not interfere with each other, the fireproof partition will not be damaged during cable laying. In addition, when encountering humid air that easily causes water to accumulate at the bottom of the cables, it is also convenient to clean and replace the fireproof partition, thereby improving the practicality of the cable tray.

[0008] Optionally, the ladder-type cable tray includes multiple ladder stops, with a side plate 1 fixedly installed on one side of each ladder stop, and a side plate 2 fixedly installed on the other side of each ladder stop.

[0009] By adopting the above technical solution, the cable is laid on the top of the ladder rung, and the cables are classified and isolated through the cooperation of side plate one and side plate two, thereby reducing signal interference between cables.

[0010] Optionally, multiple steps are spaced apart between side plate one and side plate two, and all steps are configured as hollow structures.

[0011] By adopting the above technical solutions, the spaced arrangement facilitates cable heat dissipation, the hollow structure saves metal materials and reduces costs, making the overall weight of the cable tray light, easy to transport and install, and suitable for construction needs in space-constrained or complex environments.

[0012] Optionally, the longitudinal section of the base plate is U-shaped, and the outer walls of the first side plate and the second side plate abut against the inner walls of the two sides of the base plate, respectively.

[0013] By adopting the above technical solution, the ladder-type cable tray can be snapped into the inner side of the base plate, which facilitates the subsequent fastening work between the ladder-type cable tray and the base plate.

[0014] Optionally, a gap is provided between the top of the fireproof partition and the bottom of the ladder rung.

[0015] By adopting the above technical solution, the placement of cables and fireproof partitions can be made so that they do not interfere with each other.

[0016] Optionally, the surfaces of the plurality of fastening bolts are coated with a zinc plating layer.

[0017] By adopting the above technical solution, corrosion of fastening bolts after long-term use can be effectively prevented, thereby extending the service life of the fastening bolts.

[0018] Optionally, the fireproof partition can be made of materials such as glass fiber and inorganic fiber, depending on the fire protection requirements.

[0019] By adopting the above technical solutions, the fire resistance and corrosion resistance of the fireproof partition are maintained, thereby extending the service life of the fireproof partition.

[0020] In summary, this utility model has at least one of the following beneficial effects:

[0021] This utility model improves the practicality of the cable tray by placing a fireproof partition between the bottom of the ladder-type cable tray and the top of the base plate. On the one hand, the fireproof partition will not be damaged during cable laying. On the other hand, when the air is humid, water will easily accumulate at the bottom of the cable, which will facilitate the cleaning and replacement of the fireproof partition.

[0022] This invention saves metal materials and reduces costs by making the ladder rungs hollow, resulting in a lighter overall weight of the cable tray, making it easier to transport and install, and suitable for construction needs in space-constrained or complex environments. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the main structure of the base plate of this utility model in the open state;

[0026] Figure 3 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0027] Figure 4 For the present utility model Figure 3 Enlarged structural diagram at point A in the middle;

[0028] Figure 5 This is a three-dimensional structural diagram of the base plate of this utility model in its open state. Figure 1 ;

[0029] Figure 6 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0030] Figure 7 This is a three-dimensional structural diagram of the base plate of this utility model in its open state. Figure 2 .

[0031] In the diagram: 1. Ladder-type cable tray; 101. Side plate one; 102. Side plate two; 103. Ladder stop; 2. Fireproof partition; 3. Base plate; 4. Fastening bolts. Detailed Implementation

[0032] The following is in conjunction with the appendix Figures 1-7 The present invention will be described in further detail below.

[0033] Please refer to the attached diagram in the instruction manual. Figure 1 , Figure 3 , Figure 5 and Figure 6 This utility model provides an embodiment of a ladder-type cable tray with easily replaceable fireproof partitions. The tray includes a ladder-type cable tray 1, which comprises multiple ladder stops 103. A side plate 101 is fixedly installed on one side of each ladder stop 103, and a side plate 102 is fixedly installed on the other side of each ladder stop 103. Cables are laid on top of the ladder stops 103, and the cooperation of the side plates 101 and 102 achieves cable classification and isolation, reducing signal interference between cables.

[0034] Please refer to the attached diagram in the instruction manual. Figure 3 , Figure 5 , Figure 6 and Figure 7 Multiple ladder supports 103 are spaced apart between side plate 101 and side plate 2, and all ladder supports 103 are designed as hollow structures. The spaced arrangement facilitates heat dissipation of the cables, and the hollow structure saves metal materials, reduces costs, and makes the overall weight of the cable tray lighter, making it easier to handle and install. It is suitable for construction needs in space-constrained or complex environments.

[0035] Please refer to the attached diagram in the instruction manual. Figure 3 , Figure 4 and Figure 5 The bottom of both sides of the ladder-type cable tray 1 is screwed to a base plate 3 by multiple fastening bolts 4. The longitudinal section of the base plate 3 is U-shaped, and the outer walls of side plate 101 and side plate 102 abut against the inner walls of the two sides of the base plate 3, respectively. This allows the ladder-type cable tray 1 to be fully engaged with the inner side of the base plate 3, facilitating subsequent tightening of the ladder-type cable tray 1 and the base plate 3. The surfaces of the multiple fastening bolts 4 are coated with a galvanized layer, effectively preventing corrosion of the fastening bolts 4 over long-term use and thus extending their service life.

[0036] Please refer to the attached diagram in the instruction manual. Figure 1 , Figure 2 , Figure 3 and Figure 4 A fireproof partition 2 is placed on top of the base plate 3, with a gap between the top of the fireproof partition 2 and the bottom of the ladder runner 103. This ensures that the cable and the fireproof partition 2 are positioned without interference. The fireproof partition 2 is located between the bottom of the ladder-type cable tray 1 and the top of the base plate 3. The fireproof partition 2 is made of fiberglass, which improves its fire resistance and corrosion resistance, thereby extending its service life.

[0037] Working principle: During use, side plate 101 and side plate 102 are fixedly connected to the base plate 3 by multiple fastening bolts 4, and a fireproof partition 2 is placed on top of the base plate 3. When laying cables, the cables are laid on top of the ladder stop 103. The fireproof partition 2 provides the cable tray with a certain fire resistance. At the same time, the main material of the fireproof partition 2 is glass fiber, which further improves the fire resistance of the cable tray. Since the cable and the fireproof partition 2 are arranged in a way that does not interfere with each other, the cable will not directly contact the fireproof partition during the cable laying process, thus preventing damage to the fireproof partition 2. In addition, when the cable tray is exposed to humid air and water is easily formed at the bottom of the cable, the gap between the top of the fireproof partition 2 and the bottom of the ladder stop 103 makes it easy to clean and replace the fireproof partition 2, thereby improving the practicality of the cable tray.

[0038] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A ladder-type cable tray with easily replaceable fireproof partitions, comprising a ladder-type cable tray (1), characterized in that: The bottom of both sides of the ladder-type cable tray (1) is screwed with a base plate (3) by multiple fastening bolts (4). A fireproof partition (2) is placed on the top of the base plate (3). The fireproof partition (2) is located between the bottom of the ladder-type cable tray (1) and the top of the base plate (3).

2. A ladder-type cable tray with easily replaceable fireproof partitions as described in claim 1, characterized in that: The ladder-type cable tray (1) includes multiple ladder stops (103), one side of the multiple ladder stops (103) is fixedly installed with a side plate one (101), and the other side of the multiple ladder stops (103) is fixedly installed with a side plate two (102).

3. A ladder-type cable tray with easily replaceable fireproof partitions according to claim 2, characterized in that: Multiple stair stops (103) are spaced apart between side plate one (101) and side plate two (102), and all stair stops (103) are hollow structures.

4. A ladder-type cable tray with easily replaceable fireproof partitions according to claim 2, characterized in that: The longitudinal section of the base plate (3) is U-shaped, and the outer walls of the first side plate (101) and the second side plate (102) abut against the inner walls on both sides of the base plate (3).

5. A ladder-type cable tray with easily replaceable fireproof partitions according to claim 2, characterized in that: A gap is provided between the top of the fireproof partition (2) and the bottom of the ladder rung (103).

6. A ladder-type cable tray with easily replaceable fireproof partitions as described in claim 1, characterized in that: The surfaces of all of the fastening bolts (4) are coated with a zinc plating layer.

7. A ladder-type cable tray with easily replaceable fireproof partitions as described in claim 1, characterized in that: The fireproof partition (2) is made of glass fiber or inorganic fiber.