| 摘要 |
The wheels (1) are mounted on a carrier (6) and with the scrapers, form a sprung unit against the surface to be scraped. The surface is formed by several portions joined by rivets, or similar, which form connecting lines in two directions. The connecting lines are at right-angles to one another and extend outwards to form projections from the scrapable surface. The tool moves in the two directions of the connecting lines and on its carrier has at least two wheels and/or at least two scrapers (5). One or more of the wheels passes the respective connecting line, located parallel to the wheel rotary axes, before any other wheel. Similarly so does one or more of the scrapers. |
