Novel fireproof electrical bridge

The utility model discloses a novel fireproof electrical bridge. Cable tray comprising a tray housing, an inserting plate is mounted at one end of the bridge frame shell; limiting ball clamping grooves are formed in the upper surface and the lower surface of the inserting plate; a locking cylinder is mounted below the inserting plate; an L-shaped lock hook is mounted at one end of the locking cylinder; a limiting plate is arranged at the other end of the locking cylinder; locking cylindrical sliding grooves are formed in the outer sides of the limiting plates; a limiting plate sliding groove is formed in the rear side of the locking cylindrical sliding groove, an inserting plate fixing groove is formed in the other end of the bridge shell, a limiting ball is installed on the inner side ofthe inserting plate fixing groove, a locking cylindrical fixing groove is formed below the inserting plate fixing groove, and an L-shaped latch hook locking block is installed on the inner wall of thelocking cylindrical fixin