Foreign matter cleaning device for operation and maintenance of power transmission line

The invention discloses a foreign matter cleaning device for operation and maintenance of a power transmission line. The foreign matter cleaning device comprises a bottom plate, a second cleaning mechanism and a first cleaning mechanism, a fixing table is fixedly mounted in the middle of the bottom plate, a lifting rod is slidably mounted in the center of the fixing table, and the upper end of the lifting rod is rotationally connected with the second cleaning mechanism; a first control screw rod is further rotationally mounted in the middle of the bottom plate, and the first control screw rod is in threaded connection with the lifting rod; the second cleaning mechanism comprises a mounting base, at least one foreign matter scraper mounted on the mounting base and at least one cleaning brush arranged on the side edge of the foreign matter scraper. The first control screw drives the second cleaning mechanism to lift and drive the foreign matter scraper and the cleaning brush to approach the cable, then the whol