Rail transit maintenance device convenient to fix

The utility model discloses a rail transit maintenance device convenient to fix, which comprises a maintenance workbench, an electric telescopic rod and a micro servo motor, the left end and the right end of the maintenance workbench are respectively provided with a fixing block in a clamping way, and the inner ends of the fixing blocks and the left end and the right end of the maintenance workbench are respectively in threaded connection with a fixing bolt; the electric telescopic rod is located on the upper side of the maintenance workbench, a connecting block is fixedly installed at the right end of the electric telescopic rod, a clamping structure is arranged at the right end of the connecting block, supporting legs are fixedly installed at the outer ends of the micro servo motors, and extension legs are slidably installed at the inner ends of the supporting legs. The upper ends of the extension legs are installed at the lower end of the maintenance workbench through hinges, and the fixing blocks are fixe