| 摘要 |
A movable apparatus for levelling and equalizing an aggregate layer intended to serve as a base layer for a road or runway top layer, the apparatus comprising an elongated carrier member supported at both ends by movable support assemblies, such as wheel assemblies, and having secured thereto elongated scraping members by means of securing means consisting of lifting devices for position-adjusting and -fixing the individual scraping members with respect to the carrier member, these lifting devices being hydraulically, mechanically, manually energizeable or electromotor-driven. |
