| 摘要 |
PCT No. PCT/SE86/00033 Sec. 371 Date Sep. 24, 1986 Sec. 102(e) Date Sep. 24, 1986 PCT Filed Jan. 29, 1986 PCT Pub. No. WO86/04256 PCT Pub. Date Jul. 31, 1986.The present invention relates to a scraping device in a settling basin. The scraping device removes sediments, which accumulate on the bottom of the basin. It comprises a vehicle and a scraper on the vehicle. A cable drive device having a pull cable pulls the vehicle forwards and backwards along the bottom of the basin. The scraper assumes, in one of the vehicle's two directions of movement, a working position, in which it is directed towards the bottom of the basin, in order to scrape sediments to an output area, and in the vehicle's opposite direction a passive return position, in which it is elevated from the bottom of the basin. |
