| 摘要 |
PCT No. PCT/EP83/00045 Sec. 371 Date Sep. 6, 1983 Sec. 102(e) Date Sep. 6, 1983 PCT Filed Jan. 28, 1983 PCT Pub. No. WO83/02544 PCT Pub. Date Aug. 4, 1983.A cross-member is fitted with roller-tracks extending obliquely outwardly or inwardly in a downward direction, a distributing appliance being mounted upon the roller-tracks, either directly by way of rollers or indirectly by way of an intermediate beam having at its ends, roller-tracks extending obliquely outwardly or inwardly in a downward direction, having additional rollers. Rollers may be mounted, instead of upon the distributing appliance, upon the cross-member or, if necessary, upon the intermediate beam, the roller-tracks being arranged accordingly upon the top of the distributing appliance. Furthermore, sliding ways and sliding shoes may be provided instead of the roller-tracks and rollers.
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