Flame-retardant cable bridge

The utility model belongs to the technical field of cable bridges, and particularly relates to a flame-retardant cable bridge, which solves the problems of inconvenience in use and potential safety hazards in the prior art, and comprises a lower plate and an upper plate, an installation assembly is arranged in the lower plate, the installation assembly comprises three lock bolts which are uniformly distributed at equal intervals, and the lock bolts are arranged on the lower plate. One end of each of the three lock bolts is fixedly connected with a pull head through a screw, a second rotating shaft is rotatably mounted in each pull head, two symmetrically arranged rotating rods are rotatably mounted on the peripheral surface of each second rotating shaft, and a fixed shaft and a first rotating shaft are rotatably mounted in each rotating rod; through the arrangement of a pull head, a lower plate and other structures, when equipment needs to be installed, a button is pressed down, an outer rod is driven to slid