Self-propelled pipeline detection and repairing device

The invention discloses a self-propelled pipeline detection and repairing device. The self-propelled pipeline detection and repairing device structurally comprises a first assembly, a second assemblyand a third assembly. The first assembly is located on the left side of the second assembly. The third assembly is located on the right side of the second assembly. The first assembly, the second assembly and the third assembly are connected by a lead screw. The lead screw is in threaded connection with a plurality of moving devices. A plurality of cameras are arranged on the outer surface of thefirst assembly. An illuminating lamp is arranged in the left end of the first assembly. A repairing device is arranged on the second assembly. A turn-button is rotationally connected to the middle ofthe rear end of the third assembly. The turn-button is fixedly connected with the lead screw. Limiting blocks are correspondingly arranged at the two ends of the second assembly and the left end of the third assembly. The limit