| 摘要 |
A cable scraper device (1) for conveying loose materials, in order to charge a feeder (2) comprising a rotatable chassis (5) disposed on the feeder and to which a jib (6) with a free end is pivoted and in which a hoisting cable (9) and a return cable (10) for moving a scraper bucket (8) are guided in mutually independent cable slings over two cable drums which can be connected either freely rotatably or, by way of clutches, torsionally rigid to a common drum shaft which is supported in the chassis and driven by a non-reversible winding drive. According to the invention, there is provided a supplementary drive which during automatic operation supplements the drive for the scraper drum which winds the hoisting cable during the scraping operational stage, and during the return operational stage acts on the scraper drum in such a manner that the hoisting cable and return cable move with approximately the same cable speed. <IMAGE> |
