Cable trays are divided into trough type cable trays, ladder type cable trays, tray type cable trays, grid cable trays and other structures. They can be erected independently or laid on various buildings (structures) and pipe gallery brackets. They are composed of brackets and brackets. It is composed of racks and installation accessories and has the characteristics of simple structure, flexible configuration, beautiful appearance and easy maintenance. However, existing bridges have a simple structure, little protection for cables, and poor anti-corrosion and fire protection properties, which can easily cause safety hazards. Therefore, it cannot meet the existing needs, so we proposed a composite type bridge.

Our technicians provide a composite bridge to solve the problems of simple structure, lack of anti-corrosion and fire protection, insufficient protection of cables, and potential safety hazards. In order to achieve the above purpose, the composite bridge adopts the following technical solution: a composite bridge includes a lower shell, with splints fixed on both sides of the lower shell, an upper shell is provided on the outer surface of the lower shell, and an upper shell is provided at the bottom of the upper shell. There are holes and slots, and through holes are symmetrically provided at both ends of the holes and slots. Three upper fixing plates are provided on the upper surface of the upper housing, and the lower fixing plate is located below the upper fixing plate. There is an insulating cylinder between the upper fixed plate and the lower fixed plate. There is a cable trough in the insulating cylinder. There is a drying box between two adjacent lower fixed plates. There is a limit block above the drying box on the upper surface of the inner wall of the upper housing. , a fixed column is provided at the upper end of the limit block, and the fixed column passes through the upper end of the upper housing. A sealing ring is provided on the outer surface of the fixed column near one end of the limit block, and a cylindrical block is provided at the top of the fixed column. The bottom end of the lower fixed plate is fixedly installed on the upper end surface of the inner wall of the lower housing. The lower end of the upper fixed plate is provided with a groove. The upper end of the lower fixed plate is provided with a convex groove. The upper end of the lower fixed plate is stuck on the lower end of the upper fixed plate. The drying box is filled with desiccant and the cables are fixed in the cable trough. The rectangular ring and the cylindrical block are integrally formed. The top of the fixed column is provided with a clamping groove, and the outer surface of the clamping block is clamped in the clamping slot. The positions of the through holes correspond to the slots, and fixing bolts are provided in the through holes and the slots.

Compared with the existing technology, the above-mentioned composite bridge has the following beneficial effects: 1. By setting up a drying box, the insides of the upper and lower casings can be kept dry to avoid internal rot caused by high humidity; by setting up the upper fixed plate and the lower casing, The fixed plate can fix the cable and prevent the cable from moving when it shakes; by setting the insulating tube, the cable can be fully protected in the event of a fire and the protection of the cable is strengthened; 2. The composite bridge can be installed as needed by setting a rectangular ring Adjust the direction of the upper casing and set through holes and slots to keep the upper and lower casings fixed, thereby enhancing the protection strength of the internal cables. At the same time, the bridge can flexibly move its angle as needed.