IT1255904B - VALVES ARRANGEMENT FOR INDEPENDENT CONTROL FROM THE LOAD OF MULTIPLE HYDRAULIC USES - Google Patents

VALVES ARRANGEMENT FOR INDEPENDENT CONTROL FROM THE LOAD OF MULTIPLE HYDRAULIC USES

Info

Publication number
IT1255904B
IT1255904B ITMI922426A ITMI922426A IT1255904B IT 1255904 B IT1255904 B IT 1255904B IT MI922426 A ITMI922426 A IT MI922426A IT MI922426 A ITMI922426 A IT MI922426A IT 1255904 B IT1255904 B IT 1255904B
Authority
IT
Italy
Prior art keywords
independent control
multiple hydraulic
load
refueling
valves
Prior art date
Application number
ITMI922426A
Other languages
Italian (it)
Inventor
Stellwagen Armin
Walter Scandella
Original Assignee
Rexroth Mannesmann Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE4137963A external-priority patent/DE4137963C2/en
Application filed by Rexroth Mannesmann Gmbh filed Critical Rexroth Mannesmann Gmbh
Publication of ITMI922426A0 publication Critical patent/ITMI922426A0/en
Publication of ITMI922426A1 publication Critical patent/ITMI922426A1/en
Application granted granted Critical
Publication of IT1255904B publication Critical patent/IT1255904B/en

Links

Abstract

L'invenzione concerne una disposizione di valvole per il rifornimento con mezzo compresso di utilizzi in sistemi di comando idraulici per il comando indipendente dal carico di più utilizzi idraulici azionati contemporaneamente, nei quali il rapporto tra i flussi parziali una volta impostati rimane uguale nel caso di rifornimento in difetto con mezzo compresso del sistema. Quando le richieste degli utilizzi superano la massima portata della pompa di regolazione, gli utilizzi prioritari ricevono la loro quantità richiesta, mentre gli utilizzi secondari ricevono una quantità ridotta, in quanto la pressione di comando per gli utilizzi secondari viene commutata su un livello di pressione più basso attraverso una valvola a vie ed una valvola di delimitazione di pressione. Appena nel caso di rifornimento in difetto del sistema complessivo, cioè quando la massimaThe invention relates to an arrangement of valves for refueling with compressed means of uses in hydraulic control systems for independent control of multiple hydraulic uses operated simultaneously, in which the ratio between the partial flows once set remains the same in the case of failure to supply with compressed means of the system. When the demands of the uses exceed the maximum flow rate of the regulation pump, the priority uses receive their required quantity, while the secondary uses receive a reduced quantity, as the control pressure for the secondary uses is switched to a pressure level more low through a way valve and a pressure limiting valve. Just in the case of refueling in the absence of the overall system, ie when the maximum

ITMI922426A 1991-10-30 1992-10-23 VALVES ARRANGEMENT FOR INDEPENDENT CONTROL FROM THE LOAD OF MULTIPLE HYDRAULIC USES IT1255904B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4135836 1991-10-30
DE4137963A DE4137963C2 (en) 1991-10-30 1991-11-19 Valve arrangement for load-independent control of several hydraulic consumers

Publications (3)

Publication Number Publication Date
ITMI922426A0 ITMI922426A0 (en) 1992-10-23
ITMI922426A1 ITMI922426A1 (en) 1994-04-23
IT1255904B true IT1255904B (en) 1995-11-17

Family

ID=25908676

Family Applications (1)

Application Number Title Priority Date Filing Date
ITMI922426A IT1255904B (en) 1991-10-30 1992-10-23 VALVES ARRANGEMENT FOR INDEPENDENT CONTROL FROM THE LOAD OF MULTIPLE HYDRAULIC USES

Country Status (2)

Country Link
JP (1) JPH05240208A (en)
IT (1) IT1255904B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006007935A1 (en) 2006-02-21 2007-10-25 Liebherr France Sas Control device and hydraulic pilot control
JP5066987B2 (en) * 2007-04-10 2012-11-07 コベルコ建機株式会社 Hydraulic control device of excavator

Also Published As

Publication number Publication date
JPH05240208A (en) 1993-09-17
ITMI922426A0 (en) 1992-10-23
ITMI922426A1 (en) 1994-04-23

Similar Documents

Publication Publication Date Title
CA2219207A1 (en) Pressure compensating hydraulic control system
CN105840574A (en) Load-sensitive multi-way valve and hydraulic system of engineering machine
ES8505594A1 (en) Hydraulic system with a pump and a priority valve
CN201786795U (en) Hydraulic pressure stop valve
KR920702755A (en) Hydraulic system
WO2017094454A1 (en) Pressure compensation unit
EP0801231B1 (en) Control system with induced load isolation and relief
CN108443273B (en) A kind of emergency management and rescue vehicle equipment oil return line pressure compensation throttle control system
ES535074A0 (en) HYDRAULIC INSTALLATION TO PERCEIVE THE LOAD
IT1255904B (en) VALVES ARRANGEMENT FOR INDEPENDENT CONTROL FROM THE LOAD OF MULTIPLE HYDRAULIC USES
AU558958B2 (en) A load sensing hydraulic system
CN102032232A (en) Proportional control type power limitation valve
CN204716650U (en) Variable priority flow leveling integrated valve group
JPH0142167Y2 (en)
US4683909A (en) Reservoir loading valve with pressure protection of the reservoir circuit
EP1259410A1 (en) Apparatus for controlling a braking system
JP2548204Y2 (en) Hydraulic drive
CN109611401B (en) Overload oil supplementing valve
SU1193109A1 (en) Hoisting mechanism
US3635600A (en) Device for feeding pressurized fluid
JPS6252205A (en) Cartridge valve having composite function and double-acting type hydraulic jack containing said cartridge valve
SU1067241A1 (en) Compressor plant
ES2155837T3 (en) SPEED CONTROL SYSTEM, INDEPENDENTLY OF LOAD PRESSURE, OF HYDRAULIC REGULATION ELEMENTS IN CONSTRUCTION MACHINES.
JPS6447649A (en) Hydraulic controller for anti-skid device
SU1525349A1 (en) Hydraulic system

Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19961029