Hydraulic control system

专利名称：Hydraulic control system

发明人：OBERING, RUDOLF BRUNNER,HEUSSER,

MARTIN, DIPL.-ING.,KLEMENS, HARALD,DIPL.-ING.

申请号：EP93120202.2申请日：19931215公开号：EP0603722A1公开日：19940629

专利附图：

摘要：In a hydraulic control system (V) for at least one hydraulic consumer (5, 6) of amobile crane (K), which control system (V) has a directional control spool, connected on

the one side to a pressure line (15) and a return line (16) and on the other side to twoworking lines (17, 18) to the hydraulic motor and having an adjustable spool piston (21),as well as a volume-reducing device (M) which can be brought into engagement as afunction of a critical loading state and with which at least the volume of the hydraulicmedium flowing to the hydraulic motor can be reduced, the directional control spool isdesigned as a proportional directional control spool (S1 to S8) with a feed-controlpressure balance (Z) connected upstream in the pressure line (15a), and the volume-reducing device (M) is arranged constructionally separate from the spool piston (21) sothat it engages between the feed-control pressure balance (Z) and the proportionaldirectional control spool (S1 to S8) or on the feed-control pressure balance (Z) or on thespool piston (21).

申请人：HEILMEIER & WEINLEIN FABRIK FUER OEL-HYDRAULIK GMBH & CO. KG

地址：Streitfeldstrasse 25 D-81673 München DE

国籍：DE

代理机构：Grünecker, Kinkeldey, Stockmair & Schwanhäusser Anwaltssozietät

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