Cable supporting device in cable trench

The utility model discloses a cable supporting device in a cable trench, which comprises an arc-shaped plate, the upper surface of the arc-shaped plate is rotatably connected with a clamping plate through a rotating shaft, one side of the clamping plate is fixedly provided with a fixing plate, a screw rod is inserted into the fixing plate, the surface of the screw rod is in threaded connection with a nut, and a cavity is formed in the clamping plate. A sliding plate is slidably connected into the cavity, an anti-sliding block is fixedly installed on one side of the sliding plate, and a buffer piece is fixedly installed on one side of the sliding plate. According to the supporting device for the cable in the cable trench, the arc-shaped piece is subjected to buffering reset operation through the spring piece, meanwhile, the baffle is subjected to reset operation through the moving rod, so that the baffle is subjected to reset operation through the moving rod, a cable is extruded, supporting and limiting operat