| 摘要 |
Points for a suction plant are described, with at least one suction duct (1, 1a, 1b) which has on its underside a slot provided with sealing lips, through which a nozzle of a carriage guided on the suction duct via wheels projects into the suction duct. If appropriate, a return rail made of extruded aluminium profile is provided, which has a vertical web with a thickening which is provided at the upper end and serves as a travelling rail and, at the lower end, a horizontal flange with obliquely outwardly, upwardly inclined guide paths for the wheels of the carriage. From the aluminium profile of the return rail, by means of a number of incisions in the thickening, the flange and the guide paths, which extend perpendicularly to the web (11) from outside into the vicinity of the web or as far as the web, a flexible points tongue (10) is formed, one end of which is rigidly connected to a section (1a) of the suction duct. The other, free end of the points tongue (10) is supported via a support arm (16, 21) engaging laterally on the web (11) and the support arm (16, 21) is connected to a slide (17) which can be displaced horizontally transversely to the points tongue (10) and can be adjusted by an adjusting arrangement (18, 19). <IMAGE> |
