Fast-assembly type derrick support and communication device

The invention discloses a fast-assembly type derrick support and a communication device.The fast-assembly type derrick support comprises a top round tube, a folding buckle, a middle round tube, diagonal bracing channel steel, bottom channel steel, a magnet, a short round tube and a bottom round tube, the top round tube is fixedly connected with one side face of the folding buckle, and the middle round tube is fixedly connected with the other side face, opposite to the folding buckle, of the folding buckle; the middle circular tube is fixedly connected with the bottom circular tube; one end of the inclined strut channel steel is rotationally connected with the bottom circular tube, and the other end is fixedly connected with the magnet; the short circular tube is arranged on the outer side of the bottom circular tube in a sleeving manner and can slide along the bottom circular tube; one end of the bottom channel steel is rotationally connected with the short round pipe, and the other end ...