Cable trays are categorized into various structures such as channel-type, trapezoidal, tray-type, and grid-type, which can be independently installed or laid on various building structures, pipe galleries, and support brackets. They consist of brackets, supports, and installation accessories, featuring simple structure, flexible configuration, attractive appearance, and easy maintenance. However, the existing bridge structures are simple, offer limited cable protection, have poor anti-corrosion and fire-resistant properties, and are prone to safety hazards. Therefore, they do not meet current requirements. Consequently, we have proposed a composite cable tray.

Our technical team offers a composite bridge tray to address issues such as simple structure, lack of corrosion and fire resistance, insufficient cable protection, and potential safety hazards. To achieve this, the composite bridge tray employs the following technical solution: A composite bridge tray includes a lower shell, with side panels fixed to both sides of the lower shell. The outer surface of the lower shell has an upper shell, the bottom of which features holes and grooves, with symmetrical through-holes at both ends. The upper surface of the upper shell contains three upper fixed plates, with a lower fixed plate positioned below the upper fixed plates. An insulating sleeve is located between the upper and lower fixed plates, containing a cable groove. Between adjacent lower fixed plates is a drying box, with a limit block above it on the inner wall of the upper shell. The limit block has a fixed post, which passes through the top of the upper shell. The outer surface of the fixed post near the limit block has a sealing ring, and a cylindrical block is located at the top of the fixed post. The bottom end of the lower fixed plate is fixed to the upper surface of the inner wall of the lower shell, while the lower end of the upper fixed plate has a groove. The upper end of the lower fixed plate has a protrusion, which fits into the groove of the lower end of the upper fixed plate. The drying box contains desiccant, and the cables are fixed in the cable groove. The rectangular ring is integrated with the cylindrical block, with a clip groove at the top of the fixed post, where the clip block fits externally. The through-holes correspond to the positions of the holes and grooves, with fixed bolts in both.

      Compared to existing technology, the aforementioned composite bridge has the following beneficial effects: 1. By setting up a drying chamber, the internal parts of the upper and lower shells can be kept dry, preventing internal rotting caused by high humidity; by setting up the upper and lower fixed plates, cables can be secured to prevent movement during vibration; by setting up insulating sleeves, cables are fully protected in case of a fire, enhancing cable protection; 2. The composite bridge, by incorporating rectangular loops, can adjust the direction of the upper shell as needed, and by setting through-holes and slots, the upper and lower shells are kept fixed, strengthening the internal cable protection. Additionally, the bridge can be flexibly adjusted to different angles as required.