| 摘要 |
Wearing cutting edge for a snowplough, a road scraper or the like, which during use makes contact with a roadway or the like which is provided with a hard surface layer of asphalt, concrete or the like. The wearing cutting edge (3) is made of polyurethane and mounted replaceably along that edge of the snowplough or road scraper which interacts with the road surface. In order to reduce wear on the wearing cutting edge and the road surface, the front part of the wearing cutting edge (3), in the direction of travel, consists of a sacrificial layer (8) made of a softer material than the rest (7) of the wearing cutting edge, which sacrificial layer (8), as it wears, provides material which contributes to lubrication of the rest (7) of the cutting edge. |
