Cable bridges that support cables attach and support cables to buildings (structures) or independently support cables through tunnels or caves, underground, in the air, etc., and mainly play the role of supporting cables through their own structural characteristics. It serves as the skeleton of the cable, and the cable is attached to the cable tray to complete the laying. Since there are a large number of cables laid in the cable tray, a large amount of heat will be generated when the cables are used. If this heat is not discharged in time, it will inevitably affect the service life of the cable. In order to increase the sealing performance and prevent the impact of water vapor and dust on the cables, current cable trays are usually set to a sealed type, resulting in poor heat dissipation. Therefore, we need to use composite bridges.

Our technicians provide a composite bridge that adopts a new structural design and can independently protect and isolate problematic cables as soon as possible, making it easier for staff to quickly identify problematic cables for repair. Improve efficiency and have good heat dissipation, shock absorption and fire resistance.

The composite bridge is realized through the following technical solution: a composite bridge includes a base fixedly installed on the building body, more than one elastic connector is arranged side by side on the base, and one end of each elastic connector is provided with a fixed The fixed plate is provided with an assembly cavity, and the assembly cavity of each fixed plate is filled with a bridge box. Each bridge box is filled with at least one cable, and the cable extends through the arrangement cavity in the bridge box. The top of the bridge box is open, and an elastic airbag is installed between each elastic connecting piece and the base. The elastic airbag expands the elastic connecting piece and keeps the top opening surface of the bridge box away from the main body of the building. When there is no gas in the elastic air bag, the opening surface at the top of the bridge box is in contact with the main body of the building and sealed. Each cable faces an elastic air bag, and the elastic air bag is connected to the cable through the air guide tube. The elastic connector uses a highly elastic memory metal piece, one end is welded to the base, and the other end is welded to the fixed plate. The fixed plate is fixedly connected to the bridge through screws. A silicone sealing layer is bonded to the side of the building opposite to the top open end of the layout cavity. When the top of the bridge box contacts the silicone sealing layer, the top opening surface of the bridge box is sealed by the silicone sealing layer. Each cable is equipped with a sealed cable cavity. One section of the air guide tube is connected to the air storage cavity in the elastic air bag, and the other end passes through the bridge box and is connected to the cable cavity in the cable. There are cable holes on the bridge box, and the cables pass through the cable holes and are sealed and fixed with glue. The elastic airbag is made of elastic rubber material. There are more than one heat dissipation guide rods embedded in the elastic airbag. Part of the heat dissipation guide rods extends into the air storage cavity, and part of the heat dissipation guide rods extends out to contact the air. The elastic air bag is located at the upper end of the cable. Hot air enters the elastic air bag, cold air enters the cable, and the cable exchanges gas with the elastic air bag through the air guide tube. One side of the elastic airbag is bonded and fixed with the elastic connector, and the other side is not in contact with the base.

To sum up, the beneficial effects of the above composite bridge are:

1. The composite bridge is suspended, has good buffering capacity, and is suitable for vibration situations;

2. The gas between the elastic air bag and the cable is conducted, and the heat inside the cable can be transferred to the elastic air bag for heat dissipation, which increases the heat dissipation capacity of the cable;

3. When there is a problem with the cable, the gas in the elastic air bag is released, and the corresponding bridge box loses its expansion force at this time, and is quickly reset under the action of the elastic connector, so that the top open end of the bridge box is sealed, and the cable in question can be repaired. Sealing, protecting and isolating, no matter what causes cable problems, measures can be taken promptly.