EP1574474A3 - Hydraulic arrangement - Google Patents

Hydraulic arrangement Download PDF

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Publication number
EP1574474A3
EP1574474A3 EP20050101767 EP05101767A EP1574474A3 EP 1574474 A3 EP1574474 A3 EP 1574474A3 EP 20050101767 EP20050101767 EP 20050101767 EP 05101767 A EP05101767 A EP 05101767A EP 1574474 A3 EP1574474 A3 EP 1574474A3
Authority
EP
European Patent Office
Prior art keywords
hydraulic
chamber
line
supply line
arrangement
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP20050101767
Other languages
German (de)
French (fr)
Other versions
EP1574474A2 (en
Inventor
Marcus Bitter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Deere and Co
Original Assignee
Deere and Co
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
Application filed by Deere and Co filed Critical Deere and Co
Publication of EP1574474A2 publication Critical patent/EP1574474A2/en
Publication of EP1574474A3 publication Critical patent/EP1574474A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
    • F15B11/044—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed by means in the return line, i.e. "meter out"
    • F15B11/0445—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed by means in the return line, i.e. "meter out" with counterbalance valves, e.g. to prevent overrunning or for braking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/065—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks non-masted
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/20—Means for actuating or controlling masts, platforms, or forks
    • B66F9/22—Hydraulic devices or systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/024—Systems essentially incorporating special features for controlling the speed or actuating force of an output member by means of differential connection of the servomotor lines, e.g. regenerative circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F15B2211/40515—Flow control characterised by the type of flow control means or valve with variable throttles or orifices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
    • F15B2211/50545—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using braking valves to maintain a back pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051—Linear output members
    • F15B2211/7053—Double-acting output members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/76—Control of force or torque of the output member
    • F15B2211/761—Control of a negative load, i.e. of a load generating hydraulic energy

Abstract

Es wird eine hydraulische Anordnung (10) für eine Schwimmstellung beschrieben. Die Anordnung (10) umfasst einen eine erste und eine zweite Kammer (28, 30) aufweisenden Hydraulikzylinder (26), einen Hydrauliktank (20), ein eine Hydraulikflüssigkeit förderndes Fördermittel (18), eine zwischen erster Kammer (28) und zweiter Kammer (30) angeordnete Hydraulikleitung (46), ein in der Hydraulikleitung (46) angeordnetes Schaltventil (50), eine in der Hydraulikleitung (46) angeordnete volumenstromabhängig steuernde Ventilvorrichtung (52, 76), eine erste Versorgungsleitung (22) für die erste Kammer (28), eine zweiten Versorgungsleitung (24) für die zweite Kammer (30), eine in der ersten Versorgungsleitung (22) angeordnete Rohrbruchsicherungseinrichtung (32) und ein Steuergerät (12) mit wenigstens drei Schaltstellungen, welche eine Hebestellung, eine Senkstellung und eine Neutralstellung für den Hydraulikzylinder (26) umfassen. Um eine Schwimmstellungsfunktion zu ermöglichen, wird vorgeschlagen, das Steuergerät (12) mit einer weiteren Schaltstellung zu versehen, welche eine Schwimmstellung darstellt, in welcher durch das Steuergerät (12) wenigstens die zweite Versorgungsleitung (24) mit dem Hydrauliktank (20) verbindbar ist und gleichzeitig Verbindungen beider Versorgungsleitungen (22, 24) zum Fördermittel (18) unterbrochen sind.

Figure imgaf001
A hydraulic arrangement (10) for a floating position is described. The arrangement (10) comprises a hydraulic cylinder (26) having a first and a second chamber (28, 30), a hydraulic tank (20), a hydraulic fluid conveying means (18), a first chamber (28) and second chamber ( 30) arranged hydraulic line (46), a in the hydraulic line (46) arranged switching valve (50) arranged in the hydraulic line (46) volume flow-dependent controlling valve device (52, 76), a first supply line (22) for the first chamber (28 ), a second supply line (24) for the second chamber (30), in the first supply line (22) arranged pipe rupture protection device (32) and a control device (12) with at least three switching positions, which a lifting position, a lowered position and a neutral position for comprise the hydraulic cylinder (26). In order to enable a floating position function, it is proposed to provide the control unit (12) with a further switching position, which represents a floating position, in which by the control unit (12) at least the second supply line (24) with the hydraulic tank (20) is connectable and simultaneously connections of both supply lines (22, 24) to the conveyor (18) are interrupted.
Figure imgaf001
EP20050101767 2004-03-13 2005-03-08 Hydraulic arrangement Withdrawn EP1574474A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004012382.9A DE102004012382B4 (en) 2004-03-13 2004-03-13 Hydraulic arrangement
DE102004012382 2004-03-13

Publications (2)

Publication Number Publication Date
EP1574474A2 EP1574474A2 (en) 2005-09-14
EP1574474A3 true EP1574474A3 (en) 2006-10-04

Family

ID=34813689

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20050101767 Withdrawn EP1574474A3 (en) 2004-03-13 2005-03-08 Hydraulic arrangement

Country Status (5)

Country Link
US (1) US7448309B2 (en)
EP (1) EP1574474A3 (en)
AU (1) AU2005201083B2 (en)
CA (1) CA2500609C (en)
DE (1) DE102004012382B4 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105386484A (en) * 2014-09-05 2016-03-09 徐工集团工程机械股份有限公司 Movable arm rotation pilot valve and hydraulic excavator

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007048697A1 (en) * 2007-10-11 2009-04-16 Deere & Company, Moline Hydraulic lifting device
US8095281B2 (en) * 2008-12-11 2012-01-10 Caterpillar Inc. System for controlling a hydraulic system
EP2196682A1 (en) * 2008-12-15 2010-06-16 Bosch Rexroth Oil Control S.p.A. A hydraulic device for controlling an actuator in a work vehicle
US8858151B2 (en) * 2011-08-16 2014-10-14 Caterpillar Inc. Machine having hydraulically actuated implement system with down force control, and method
US8997479B2 (en) * 2012-04-27 2015-04-07 Caterpillar Inc. Hydraulic control system having energy recovery
EP2786959B1 (en) * 2013-04-05 2017-05-10 Bosch Rexroth Oil Control S.p.A. Anti cavitation device for a hydraulic cylinder
EP2786958B1 (en) * 2013-04-05 2017-06-14 Bosch Rexroth Oil Control S.p.A. Control device for the descent of a load
NL2010952C2 (en) * 2013-06-11 2014-12-15 Demolition And Recycling Equipment B V HYDRAULIC CYLINDER FOR EXAMPLE FOR USE IN A HYDRAULIC TOOL.
CN105298951B (en) * 2015-12-02 2018-10-23 湖南星邦重工有限公司 A kind of aerial work platform and its changing-breadth system
ITUB20159831A1 (en) * 2015-12-14 2017-06-14 Ghim Hydraulics S R L HYDRAULIC DEVICE PARTICULARLY SUITABLE FOR THE MOVEMENT OF A SNOW BLADE
ITUA20162376A1 (en) * 2016-04-07 2017-10-07 Atlantic Fluid Tech S R L CONTROL UNIT OF AN ACTUATOR
IT201700047745A1 (en) 2017-05-03 2018-11-03 Cnh Ind Italia Spa VEHICLE EQUIPPED WITH AN ARM INCLUDING A HYDRAULIC CONTROL CIRCUIT WITH A LOAD CONTROL VALVE
US10502245B2 (en) * 2017-08-29 2019-12-10 Hamilton Sundstrand Corporation Actuator cooling flow limiter
JP7164294B2 (en) * 2017-10-24 2022-11-01 株式会社小松製作所 work vehicle
WO2019210341A1 (en) * 2018-05-04 2019-11-07 Palfinger Ag Hydraulic system
FR3083578B1 (en) * 2018-07-09 2021-01-22 Safran Landing Systems HYDRAULIC CIRCUIT FOR THE SUPPLY OF A CYLINDER, IN PARTICULAR USED TO MANEUVER AN AIRCRAFT LOCK DOOR
IT201900005056A1 (en) * 2019-04-04 2020-10-04 Nem S R L HYDRAULIC DRIVE CIRCUIT FOR OPERATING MACHINE WITH MECHANICAL ARTICULATION EQUIPPED WITH FLOATING FUNCTION.
JP7151597B2 (en) * 2019-04-04 2022-10-12 株式会社豊田自動織機 Hydraulic drives for industrial vehicles
JP6859411B2 (en) * 2019-09-26 2021-04-14 古河ユニック株式会社 Speed-up valve device
CN111237264A (en) * 2020-02-26 2020-06-05 浙江迦南科技股份有限公司 Oil circuit structure for realizing precise control of double-acting oil cylinder
CN112303056B (en) * 2020-11-03 2022-11-04 山西天地煤机装备有限公司 Automatic pressure regulating device for safety valve of emulsion pump station and using method thereof
DE102021131906A1 (en) 2021-12-03 2023-06-07 Wirtgen Gmbh Ground milling machine, in particular stabilizer or recycler, and method for operating a ground milling machine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3650425A (en) * 1970-06-12 1972-03-21 Sperry Rand Corp Bucket loader control system
DE3216580A1 (en) * 1981-05-07 1983-02-24 Hiab-Foco AB, 82401 Hudiksvall Load-holding and load-lowering brake valve
US4522109A (en) * 1983-11-21 1985-06-11 J. I. Case Company Leak-detecting hydraulic system
JPS63265023A (en) * 1987-04-20 1988-11-01 Kobe Steel Ltd Vibration suppressor for vehicular construction machine
DE10006908A1 (en) * 2000-02-16 2001-08-23 Caterpillar Sarl Genf Geneva Hydraulic cylinder unit for raising and lowering front arm on root harvester has branch pipe leading back to oil tank which is fitted with shut-off valve and pressure-regulating valve

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DE69014312T2 (en) * 1989-01-13 1995-04-06 Hitachi Construction Machinery Hydraulic system for the boom cylinder of a construction machine.
JPH081202B2 (en) * 1989-04-03 1996-01-10 株式会社豊田自動織機製作所 Operating circuit of single-acting hydraulic cylinder
DE19548943B4 (en) * 1995-12-28 2005-05-04 Bosch Rexroth Ag valve assembly
US5622226A (en) * 1996-01-29 1997-04-22 Caterpillar Inc. Method for controlling bounce of a work implement
DE19608758A1 (en) * 1996-03-07 1997-09-11 Rexroth Mannesmann Gmbh Multifunction control valve for hydraulic lifting gear
US6068064A (en) * 1998-05-20 2000-05-30 Case Corporation Agricultural implement with ground engaging tool and fluid circuit to control same
DE19931142C2 (en) * 1999-07-06 2002-07-18 Sauer Danfoss Holding As Nordb Hydraulic valve arrangement with locking function
US6460623B1 (en) * 2000-10-20 2002-10-08 Caterpillar Inc. Hydraulic system providing down force on a work implement
DE10227966A1 (en) * 2002-06-22 2004-01-08 Deere & Company, Moline Hydraulic control arrangement for a mobile machine
DE10307346A1 (en) * 2003-02-21 2004-09-02 Deere & Company, Moline valve assembly

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3650425A (en) * 1970-06-12 1972-03-21 Sperry Rand Corp Bucket loader control system
DE3216580A1 (en) * 1981-05-07 1983-02-24 Hiab-Foco AB, 82401 Hudiksvall Load-holding and load-lowering brake valve
US4522109A (en) * 1983-11-21 1985-06-11 J. I. Case Company Leak-detecting hydraulic system
JPS63265023A (en) * 1987-04-20 1988-11-01 Kobe Steel Ltd Vibration suppressor for vehicular construction machine
DE10006908A1 (en) * 2000-02-16 2001-08-23 Caterpillar Sarl Genf Geneva Hydraulic cylinder unit for raising and lowering front arm on root harvester has branch pipe leading back to oil tank which is fitted with shut-off valve and pressure-regulating valve

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 013, no. 060 (M - 796) 10 February 1989 (1989-02-10) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105386484A (en) * 2014-09-05 2016-03-09 徐工集团工程机械股份有限公司 Movable arm rotation pilot valve and hydraulic excavator
CN105386484B (en) * 2014-09-05 2017-11-21 徐工集团工程机械股份有限公司 A kind of swing arm revolution pilot valve and hydraulic crawler excavator

Also Published As

Publication number Publication date
CA2500609C (en) 2007-05-22
DE102004012382B4 (en) 2014-03-13
US7448309B2 (en) 2008-11-11
US20050199120A1 (en) 2005-09-15
AU2005201083A1 (en) 2005-09-29
AU2005201083B2 (en) 2011-03-10
DE102004012382A1 (en) 2005-09-29
EP1574474A2 (en) 2005-09-14
CA2500609A1 (en) 2005-09-13

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