| 摘要 |
PCT No. PCT/GB94/01049 Sec. 371 Date Apr. 17, 1995 Sec. 102(e) Date Apr. 17, 1995 PCT Filed May 17, 1994 PCT Pub. No. WO94/26985 PCT Pub. Date Nov. 24, 1994Compaction of a soil surface is achieved by means of a machine (10) which has a movable, wheeled carriage (20) and an impact roller coupled resiliently to the carriage so as to move together with the carriage. The impact roller has one or more out-of-round compactor masses (12) designed to apply periodic impact blows to the soil surface (36). A soil working implement, in the form of an upright scraper blade (44) is carried by the carriage in a position trailing the impact roller. The function of the blade is to scrape soil into the localized indentations (40) that are formed in the soil surface by the periodic impact blows applied by the compactor mass or masses. This smooths out the soil surface for subsequent passes and reduces the shock loading on the tractive vehicle which pulls the carriage. |
