EP 0284831 B1 19920812 - HYDRAULIC CONTROL DEVICE FOR GROUPS OF CONSUMERS
Title (en)
HYDRAULIC CONTROL DEVICE FOR GROUPS OF CONSUMERS
Publication
Application
Priority
DE 3710699 A 19870331
Abstract (en)
[origin: EP0284831A2] In such control devices, the monitoring valve switches off the supply controller at the pressure or stroke limit or it limits the effective volumetric flow. The monitoring valve does not tell whether the consumer has actually exceeded or fallen short of the pressure or stroke limit, because it responds independently of the operating direction of the consumer. The novel control device is to directionally monitor the consumers. To directionally monitor the consumers (V), the control line branch (34) is constantly attached via the relief control line (36, 37, 38) to the displacement control slide (S1 - S5) and in the interior of the same can be attached directly to the tank solely in a control position (a or b) in which the consumer has been loaded in a direction in which it exceeds a predetermined pressure or stroke limit in the group of consumers. Although the monitoring valve responds, the relieving or limiting function only comes to bear if the displacement control slide reaches a control position in which the consumer would move in a direction in which it exceeds the pressure or stroke limit. On account of the directional monitoring of the consumers, the control device is suitable, for example, for the simultaneous control of various operating cylinders and hydraulic motors in mobile cranes. <IMAGE>
IPC 1-7
IPC 8 full level
B66C 23/00 (2006.01); B66C 23/90 (2006.01); F15B 11/05 (2006.01); F15B 11/16 (2006.01); F15B 13/04 (2006.01)
CPC (source: EP)
B66C 23/90 (2013.01); F15B 11/165 (2013.01); F15B 13/0416 (2013.01); F15B 2211/20553 (2013.01); F15B 2211/30535 (2013.01); F15B 2211/3127 (2013.01); F15B 2211/3144 (2013.01); F15B 2211/324 (2013.01); F15B 2211/50518 (2013.01); F15B 2211/55 (2013.01); F15B 2211/6052 (2013.01); F15B 2211/6055 (2013.01); F15B 2211/7053 (2013.01); F15B 2211/71 (2013.01)
Citation (examination)
- DE 2656059 A1 19770728 - CATERPILLAR TRACTOR CO
- DE 3022592 A1 19811224 - HEILMEIER & WEINLEIN [DE]
- Danfoss-Druckschrift HK50,1983, Lastunabhängige Proportionalventile PVG 60, Seite 22;
Designated contracting state (EPC)
AT BE CH DE ES FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0284831 A2 19881005; EP 0284831 A3 19900816; EP 0284831 B1 19920812; AT E79448 T1 19920815; DE 3710699 C1 19880818; DE 3873576 D1 19920917; ES 2033959 T3 19930401
DOCDB simple family (application)
EP 88103532 A 19880307; AT 88103532 T 19880307; DE 3710699 A 19870331; DE 3873576 T 19880307; ES 88103532 T 19880307