A hot-dip galvanizing ladder type bridge
By incorporating a design with fixing blocks, sealing blocks, U-shaped grooves, threaded rods, guide rods, and arc-shaped blocks, the problem of cable sag was solved, achieving stable cable fixation and improved heat dissipation performance, thereby enhancing the practicality of the cable tray and the stability of the electrical system.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI LIGAO ELECTRICAL
- Filing Date
- 2025-07-22
- Publication Date
- 2026-06-12
AI Technical Summary
In existing hot-dip galvanized ladder-type cable trays, cables tend to sag due to their own weight, causing changes in the laying length and requiring frequent adjustments, which affects work efficiency.
The design incorporates a fixed block, a sealing block, a U-shaped groove, a threaded rod, a guide rod, and an arc-shaped block working together. The cable is secured with bolts, and the guide rod and threaded rod drive the arc-shaped block to descend, tightening the cable within the U-shaped groove. Combined with heat sinks and ventilation holes, the heat dissipation performance is improved.
Effectively secure cables, prevent sagging, improve laying quality and efficiency, reduce maintenance costs, ensure stable operation of electrical systems, and extend service life.
Smart Images

Figure CN224355775U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of cable tray technology, specifically relating to a hot-dip galvanized ladder-type cable tray. Background Technology
[0002] As a key component in electrical wiring systems, cable trays bear the important responsibility of supporting, protecting, and managing cables, wires, and other wiring. They are widely used in numerous fields, including industry, commerce, and construction. There are many types of cable trays. Structurally, there are trough-type, tray-type, ladder-type, and mesh-type cable trays, each with its own advantages in terms of application scenarios and functional characteristics. In terms of materials, they include stainless steel cable trays, aluminum alloy cable trays, steel cable trays, and epoxy resin composite cable trays. The differences in materials determine the varying performance characteristics of the cable trays in terms of strength, corrosion resistance, and weight.
[0003] Among steel cable trays, there is a type called hot-dip galvanized ladder-type cable tray. It is made by immersing steel components in molten zinc at high temperatures, causing a zinc layer to adhere to the surface of the steel components, thus forming a zinc-iron alloy layer. However, in actual use of hot-dip galvanized ladder-type cable trays, a problem exists: when cables are manually placed inside the tray, their weight can cause them to sag. This sag alters the overall length of the cable, potentially making it insufficient for the tray's installation requirements. As a result, workers need to re-inspect the cable arrangement and adjust its position, undoubtedly impacting work efficiency. Utility Model Content
[0004] The purpose of this invention is to provide a hot-dip galvanized ladder-type cable tray, aiming to solve the problem in existing technologies where, after cables are manually placed inside the tray, their weight causes them to sag. This sagging alters the overall length of the cable, potentially making it insufficient for the tray's installation requirements. Consequently, workers must re-inspect the cable arrangement and adjust its position, undoubtedly impacting work efficiency.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a hot-dip galvanized ladder-type cable tray, comprising two symmetrical side beams, a crossbeam welded between the inner walls of the two side beams, a fixing block installed on the inner walls of the two side beams, a sealing block connected to the top of the fixing block, a bolt threaded through the top of the sealing block, a threaded rod threaded through the top of the sealing block, a guide rod threaded through the top of the sealing block, an arc-shaped block at the bottom of the sealing block, and a U-shaped groove formed on the top surface of the fixing block.
[0006] As a preferred embodiment of the hot-dip galvanized ladder-type cable tray of this utility model, the sealing block can be detachably and fixedly connected to the fixing block by bolts.
[0007] In a preferred embodiment of the hot-dip galvanized ladder-type cable tray of this utility model, the sealing block and the fixing block have the same length and width dimensions.
[0008] In a preferred embodiment of the hot-dip galvanized ladder-type cable tray of this utility model, the outer wall of the arc-shaped block is connected to the guide rod and the threaded rod, and the arc-shaped block can form a lifting connection with the sealing block through the guide rod and the threaded rod.
[0009] In a preferred embodiment of the hot-dip galvanized ladder-type cable tray of this utility model, the size of the arc-shaped block is smaller than the size of the U-shaped groove.
[0010] As a preferred embodiment of the hot-dip galvanized ladder-type cable tray of this utility model, the top surface of the crossbeam is provided with a groove, the inner wall of the groove is provided with heat dissipation holes, and heat dissipation fins are assembled inside the groove.
[0011] As a preferred embodiment of the hot-dip galvanized ladder-type cable tray of this utility model, the heat dissipation holes are provided in eight equally spaced holes distributed on the inner wall of the groove.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] Through the coordinated operation of fixing blocks, sealing blocks, U-shaped channels, threaded rods, guide rods, arc-shaped blocks, and bolts, operators can first place the cables orderly within the U-shaped channels when laying cables in the cable tray. The U-shaped channels effectively prevent cables from scattering, ensuring a neat and orderly cable laying. Then, the sealing blocks are securely fixed to the top of the fixing blocks using bolts. Rotating the threaded rod, guided by the guide rod, causes the arc-shaped blocks to descend smoothly, thus tightly binding the cables within the U-shaped channels. This design effectively secures both ends of the cables within the cable tray, forming a stable and reliable binding force. Its significant benefit lies in preventing cables from sagging due to their own weight between the two crossbeams, ensuring that the cables maintain a stable routing state within the cable tray. This not only greatly improves the quality and efficiency of cable laying but also significantly enhances the practicality of the cable tray, reduces cable maintenance costs, and ensures the long-term stable operation of the electrical system.
[0014] By mounting heat sinks into pre-drilled grooves on the top surface of the crossbeam, and combining this with appropriately placed ventilation holes, the heat generated by the cables during operation can be effectively absorbed by the heat sinks. Simultaneously, the ventilation holes allow natural airflow to enter the cable tray. This design significantly improves the heat dissipation performance of the cable tray. Its benefits include effectively reducing the internal temperature of the cable tray, preventing safety hazards caused by cable overheating, extending the service life of both the cables and the cable tray, and ensuring the stability and reliability of the electrical system. Attached Figure Description
[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:
[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0017] Figure 2 This is a schematic diagram showing the disassembled structure of the fixing block and sealing block of this utility model;
[0018] Figure 3 This is a schematic diagram showing the disassembled structure of the fixing block, sealing block, and arc-shaped block of this utility model;
[0019] Figure 4 This is a cross-sectional view of the beam structure of this utility model.
[0020] In the diagram: 1. Side beam; 2. Cross beam; 3. Fixing block; 4. Sealing block; 5. U-shaped groove; 6. Threaded rod; 7. Guide rod; 8. Arc-shaped block; 9. Bolt; 10. Heat sink; 11. Heat dissipation hole; 12. Groove. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0022] Please see Figures 1-4 The present invention provides the following technical solution: a hot-dip galvanized ladder cable tray, comprising two symmetrical side beams 1, a crossbeam 2 welded between the inner walls of the two side beams 1, a fixing block 3 installed on the inner walls of the two side beams 1, a sealing block 4 connected to the top of the fixing block 3, a bolt 9 threadedly connected to the top of the sealing block 4, a threaded rod 6 threadedly connected to the top of the sealing block 4, a guide rod 7 threadedly connected to the top of the sealing block 4, an arc-shaped block 8 provided at the bottom of the sealing block 4, and a U-shaped groove 5 opened on the top surface of the fixing block 3.
[0023] In practical use, hot-dip galvanized ladder-type cable trays mainly consist of side beams 1 and cross beams 2, both of which are made of steel. During the production process, the steel components are immersed in molten zinc at high temperatures, causing a uniform layer of zinc to adhere to the surface of the steel components, thus achieving hot-dip galvanizing. Afterward, the hot-dip galvanized side beams 1 and cross beams 2 are assembled to form the hot-dip galvanized cable tray. Notably, there are multiple cross beams 2, welded to the inner wall of the side beams 1 and arranged in a stepped manner; this structural design of the cable tray is called a hot-dip galvanized ladder-type cable tray.
[0024] Preferably, the sealing block 4 can be detachably and fixedly connected to the fixing block 3 via bolts 9. The sealing block 4 and the fixing block 3 have the same length and width. The outer wall of the arc-shaped block 8 is connected to the guide rod 7 and the threaded rod 6, and the arc-shaped block 8 can be raised and lowered to the sealing block 4 via the guide rod 7 and the threaded rod 6. The size of the arc-shaped block 8 is smaller than the size of the U-shaped groove 5.
[0025] In practical use, since the sealing block 4 is connected to the fixing block 3 via bolts 9, the operator can first remove bolts 9 and then remove the sealing block 4 when placing the cable. Next, the cable is placed into the U-shaped groove 5. The characteristics of the U-shaped groove 5 effectively prevent the cable from becoming tangled, ensuring a neat and orderly cable laying. The length and width dimensions of the sealing block 4 and the fixing block 3 are designed to be consistent, ensuring that the size of the sealing block 4 does not exceed that of the fixing block 3, allowing them to fit tightly after connection and preventing dimensional deviations from affecting the normal use of the arc-shaped block 8.
[0026] After the sealing block 4 and the fixing block 3 are connected, the operator rotates the threaded rod 6. Because the size of the arc-shaped block 8 is smaller than the size of the U-shaped groove 5, the arc-shaped block 8 is smoothly lowered into the U-shaped groove 5 under the guidance of the guide rod 7, thus tightly binding the cable within the U-shaped groove 5. This design effectively fixes both ends of the cable in the cable tray, forming a stable and reliable binding force. Its significant benefit is that it prevents the cable from falling from the gap between the two crossbeams 2 due to its own weight, ensuring that the cable maintains a stable routing state within the cable tray. This not only greatly improves the quality and efficiency of cable laying but also significantly enhances the practicality of the cable tray, effectively reduces cable maintenance costs, and provides a strong guarantee for the long-term stable operation of the electrical system.
[0027] Preferably, the top surface of the crossbeam 2 has a groove 12, the inner wall of the groove 12 has heat dissipation holes 11, and a heat sink 10 is installed inside the groove 12. There are eight heat dissipation holes 11 distributed at equal intervals on the inner wall of the groove 12.
[0028] In practical use, the heat sink 10 is assembled into the pre-drilled groove 12 on the top surface of the crossbeam 2, and ventilation holes 11 are appropriately opened. During cable operation, the heat sink 10 can efficiently absorb the heat generated by the cable, while the ventilation holes 11 can introduce external natural air into the cable tray, promoting air circulation. This design greatly improves the heat dissipation performance of the cable tray. Its significant benefit lies in effectively reducing the internal temperature of the cable tray, avoiding safety hazards such as short circuits and fires caused by overheating of the cables, thereby extending the service life of the cables and cable tray, and ensuring that the electrical system can operate stably and reliably for a long time.
[0029] Operating principle: First, the heat sink 10 is assembled into the pre-drilled groove 12 on the top surface of the crossbeam 2 to prepare for subsequent heat dissipation. Next, the bolts 9 are removed and the sealing block 4 is taken off to allow for cable placement.
[0030] Next, the cable is placed into the U-shaped groove 5. The characteristics of the U-shaped groove 5 effectively prevent the cable from scattering, ensuring that the cable is laid neatly and orderly. Then, the sealing block 4 and the fixing block 3 are reconnected using bolts 9. Afterward, the operator rotates the threaded rod 6, and under the guidance of the guide rod 7, the arc-shaped block 8 is driven to descend smoothly within the U-shaped groove 5, thereby tightly binding the cable within the U-shaped groove 5. This design can effectively fix both ends of the cable in the cable tray, forming a stable and reliable binding force, preventing the cable from falling from the gap between the two crossbeams 2 due to its own weight, and ensuring that the cable maintains a stable routing state within the cable tray.
[0031] This design not only significantly improves the quality and efficiency of cable laying but also greatly enhances the practicality of the cable tray, effectively reducing cable maintenance costs and providing strong support for the long-term stable operation of the electrical system. Furthermore, during cable operation, the heat sink 10 efficiently absorbs the heat generated by the cables, while the ventilation holes 11 introduce external natural air into the cable tray, promoting air circulation and greatly improving the heat dissipation performance of the cable tray. This effectively reduces the internal temperature of the cable tray, preventing safety hazards such as short circuits and fires caused by overheating of the cables, thereby extending the service life of the cables and cable tray and ensuring the long-term stable and reliable operation of the electrical system.
[0032] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A hot-dip galvanized ladder-type cable tray, comprising two symmetrical side beams (1), characterized in that: A crossbeam (2) is welded between the inner walls of the two side beams (1), and a fixing block (3) is installed on the inner walls of the two side beams (1). A sealing block (4) is connected to the top of the fixing block (3), and a bolt (9) is threaded through the top of the sealing block (4). The top end of the sealing block (4) is threaded with a threaded rod (6), the top end of the sealing block (4) is threaded with a guide rod (7), the bottom end of the sealing block (4) is provided with an arc-shaped block (8), and the top surface of the fixing block (3) is provided with a U-shaped groove (5).
2. The hot-dip galvanized ladder-type cable tray according to claim 1, characterized in that: The sealing block (4) can be detachably and fixedly connected to the fixing block (3) by bolts (9).
3. The hot-dip galvanized ladder-type cable tray according to claim 1, characterized in that: The sealing block (4) has the same length and width as the fixing block (3).
4. The hot-dip galvanized ladder-type cable tray according to claim 1, characterized in that: The outer wall of the arc-shaped block (8) is connected to the guide rod (7) and the threaded rod (6). The arc-shaped block (8) can be connected to the sealing block (4) in a lifting manner through the guide rod (7) and the threaded rod (6).
5. A hot-dip galvanized ladder-type cable tray according to claim 1, characterized in that: The size of the arc-shaped block (8) is smaller than the size of the U-shaped groove (5).
6. A hot-dip galvanized ladder-type cable tray according to claim 5, characterized in that: The top surface of the crossbeam (2) is provided with a groove (12), the inner wall of the groove (12) is provided with heat dissipation holes (11), and the inside of the groove (12) is equipped with heat dissipation fins (10).
7. A hot-dip galvanized ladder-type cable tray according to claim 6, characterized in that: The heat dissipation holes (11) are provided in eight equally spaced portions on the inner wall of the groove (12).