Floating seal of gear box for scraper and mounting tool of floating seal

The invention relates to the field of gear boxes, in particular to a floating seal of a gear box for a scraper and an installation tool of the floating seal, the floating seal is composed of a pressing plate, a fixing plate, a floating sealing seat, a floating sealing piece, an output transparent cover and an adjusting pad, and the installation tool comprises a circular ring column and extension plates axially distributed on the inner wall of the circular ring column. A surface groove is formed in the upper side surface of the extension plate; the end blocks are arranged at the two ends of the supporting plate, and the bottom of the supporting plate is slidably connected with the surface groove; a driving portion for sliding the pallet along the surface groove; an inner opening is formed in the inner wall of the side opening, and a side sliding groove allowing the end block to enter is formed in the side wall of the inner opening. The position of the supporting plate is adjusted through the driving part, and