EP2278169A3 - Hydraulic assembly with pressure relief means - Google Patents

Hydraulic assembly with pressure relief means Download PDF

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Publication number
EP2278169A3
EP2278169A3 EP10170255.3A EP10170255A EP2278169A3 EP 2278169 A3 EP2278169 A3 EP 2278169A3 EP 10170255 A EP10170255 A EP 10170255A EP 2278169 A3 EP2278169 A3 EP 2278169A3
Authority
EP
European Patent Office
Prior art keywords
hydraulic
check valve
working port
pressure relief
overpressure protection
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Withdrawn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
EP10170255.3A
Other languages
German (de)
French (fr)
Other versions
EP2278169A2 (en
Inventor
Marcus Bitter
Martin Trinler
Nicolás Huber
Holger Lüüs
Karl Kern
Wolfgang Todt
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.)
Bucher Hydraulics GmbH
Deere and Co
Original Assignee
Bucher Hydraulics GmbH
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 Bucher Hydraulics GmbH, Deere and Co filed Critical Bucher Hydraulics GmbH
Publication of EP2278169A2 publication Critical patent/EP2278169A2/en
Publication of EP2278169A3 publication Critical patent/EP2278169A3/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Withdrawn legal-status Critical Current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
    • F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
    • F15B20/007—Overload
    • 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
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/30505—Non-return valves, i.e. check valves
    • F15B2211/3051—Cross-check valves
    • 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
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/30505—Non-return valves, i.e. check valves
    • F15B2211/30515—Load holding valves
    • 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
    • F15B2211/30—Directional control
    • F15B2211/31—Directional control characterised by the positions of the valve element
    • F15B2211/3144—Directional control characterised by the positions of the valve element the positions being continuously variable, e.g. as realised by proportional valves
    • 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
    • F15B2211/30—Directional control
    • F15B2211/315—Directional control characterised by the connections of the valve or valves in the circuit
    • F15B2211/31523—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source and an output member
    • F15B2211/31529—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source and an output member having a single pressure source and a single output member
    • 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
    • F15B2211/40507—Flow control characterised by the type of flow control means or valve with constant 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
    • F15B2211/50518—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using pressure relief valves
    • F15B2211/50527—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using pressure relief valves using cross-pressure relief valves
    • 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
    • F15B2211/515—Pressure control characterised by the connections of the pressure control means in the circuit
    • F15B2211/5159—Pressure control characterised by the connections of the pressure control means in the circuit being connected to an output member and a return line

Abstract

Es wird eine hydraulische Anordnung (12, 14, 15) vorgeschlagen. Die hydraulische Anordnung (12, 14, 15) umfasst ein Steuergerät (22, 22'), eine Hydraulikquelle (18) und ein Hydraulikreservoir (20), die jeweils mit dem Steuergerät (22, 22') verbunden sind, wenigstens einem hydraulischen Arbeitsanschluss (24, 26) für einen hydraulischen Verbraucher (36, 36'), wenigstens ein aufsteuerbares, leckagefreies Rückschlagventil (28, 30), welches zwischen dem wenigstens einen Arbeitsanschluss (24, 26) und dem Steuergerät (22, 22') angeordnet ist, und wenigstens eine zwischen dem wenigstens einen Arbeitsanschluss (24, 26) und dem wenigstens einen Rückschlagventil (28, 30) angeordnete Überdrucksicherung (32, 34, 32', 34'). Um einerseits ein Durchsacken einer Last an einem hydraulischen Verbraucher (36, 36') und andererseits Temperatur bedingte Druckerhöhungen zu vermeiden wird vorgeschlagen, dass die wenigstens eine Überdrucksicherung (32, 34, 32', 34') derart angeordnet und ausgebildet ist, dass durch Abführen von Hydraulikflüssigkeit zwischen dem wenigstens einen Rückschlagventil (28, 30) und dem wenigstens einen Arbeitsanschluss (24, 26) ein sich aufbauender Überdruck abbaubar ist, wobei die wenigstens eine Überdrucksicherung (32, 34, 32', 34') ein Überdruckventil (42, 44) und diesem hydraulisch nachgeschaltete Mittel umfasst, die eine Drosselung des Volumenstroms der durch die wenigstens eine Überdrucksicherung (32, 34, 32', 34') abgeführten Hydraulikflüssigkeit hervorrufen.

Figure imgaf001
A hydraulic arrangement (12, 14, 15) is proposed. The hydraulic arrangement (12, 14, 15) comprises a control unit (22, 22 '), a hydraulic source (18) and a hydraulic reservoir (20) which are each connected to the control unit (22, 22'), at least one hydraulic working connection (24, 26) for a hydraulic consumer (36, 36 '), at least one openable, leak-free check valve (28, 30) which is arranged between the at least one working port (24, 26) and the control device (22, 22') , And at least one between the at least one working port (24, 26) and the at least one check valve (28, 30) arranged overpressure protection (32, 34, 32 ', 34'). On the one hand to prevent sagging of a load on a hydraulic consumer (36, 36 ') and on the other hand temperature-related pressure increases, it is proposed that the at least one overpressure safety device (32, 34, 32', 34 ') is arranged and configured such that Discharging hydraulic fluid between the at least one check valve (28, 30) and the at least one working port (24, 26) is a build-up pressure is degradable, wherein the at least one overpressure protection (32, 34, 32 ', 34') a pressure relief valve (42 , 44) and this hydraulically downstream means, which cause a throttling of the volume flow of the through the at least one overpressure protection (32, 34, 32 ', 34') discharged hydraulic fluid.
Figure imgaf001
EP10170255.3A 2009-07-22 2010-07-21 Hydraulic assembly with pressure relief means Withdrawn EP2278169A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009027935A DE102009027935A1 (en) 2009-07-22 2009-07-22 Hydraulic arrangement

Publications (2)

Publication Number Publication Date
EP2278169A2 EP2278169A2 (en) 2011-01-26
EP2278169A3 true EP2278169A3 (en) 2014-08-06

Family

ID=43027564

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10170255.3A Withdrawn EP2278169A3 (en) 2009-07-22 2010-07-21 Hydraulic assembly with pressure relief means

Country Status (3)

Country Link
US (1) US20110120297A1 (en)
EP (1) EP2278169A3 (en)
DE (1) DE102009027935A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9085873B2 (en) * 2011-12-23 2015-07-21 Caterpillar Inc. Hydraulic system for controlling a work implement
US9708796B2 (en) 2014-09-25 2017-07-18 Cnh Industrial America Llc Hydraulic valve
US9790964B2 (en) 2014-09-25 2017-10-17 Cnh Industrial America Llc Hydraulic system
JP6303994B2 (en) * 2014-11-28 2018-04-04 株式会社デンソー Hydraulic supply device for vehicle
US10927858B2 (en) * 2016-06-22 2021-02-23 Aladdin Engineering And Manufacturing, Inc. Valve system for pneumatic cylinders
CN106286476A (en) * 2016-08-08 2017-01-04 湖北航天技术研究院特种车辆技术中心 A kind of integrated form relief valve group
US20180066681A1 (en) * 2016-09-08 2018-03-08 Lippert Components, Inc. Hydraulic stabilizing system
DE102017201045A1 (en) * 2017-01-23 2018-07-26 Bayerische Motoren Werke Aktiengesellschaft Pressure vessel system for a motor vehicle
CN108916132A (en) * 2018-07-31 2018-11-30 宁波市镇海海威液压科技有限公司 A kind of device of accurate control hydraulic cylinder raising and lowering
CN111059101B (en) * 2019-11-07 2022-01-11 中冶宝钢技术服务有限公司 Big arm oil cylinder control valve group

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6068064A (en) * 1998-05-20 2000-05-30 Case Corporation Agricultural implement with ground engaging tool and fluid circuit to control same
DE19956717A1 (en) * 1998-11-25 2000-06-08 Kayaba Industry Co Ltd Hydraulic control appliance for hydraulic shovels etc. has arrangement to prevent load from falling without connected overload relief valve
US20060249016A1 (en) * 2005-03-31 2006-11-09 Nabtesco Corporation Hydraulic circuit and its valve gear

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3771422A (en) * 1971-10-13 1973-11-13 Houdaille Industries Inc Automatic pressure relief and snubbing in hydraulic actuators
US4694649A (en) * 1983-02-04 1987-09-22 Howeth David F Pressure limiting acceleration control system and valve for hydraulic motors
US5325761A (en) * 1991-03-25 1994-07-05 Friedrich Wilh. Schwing Gmbh Switching arrangement for controlling the speed of hydraulic drives
US5415076A (en) * 1994-04-18 1995-05-16 Caterpillar Inc. Hydraulic system having a combined meter-out and regeneration valve assembly
US6305264B1 (en) * 1998-11-05 2001-10-23 Smc Kabushiki Kaisha Actuator control circuit
DE10123699A1 (en) * 2001-05-15 2002-11-21 Bosch Rexroth Ag Valve arrangement for pressure medium control of hydraulic cylinder/motor has flow control valve to charge pressure balance in intake pipe, or valve in closing direction
AT412810B (en) * 2003-05-28 2005-07-25 Hoerbiger Automatisierungstech BRAKE VALVE, ESPECIALLY FOR HYDRAULIC OPERATING ARRANGEMENTS FOR MOVABLE PARTS ON VEHICLES
US7591133B2 (en) * 2006-01-03 2009-09-22 Wright John J Actuator system having a valve manifold
AT503811B1 (en) * 2006-05-18 2008-01-15 Hoerbiger Automatisierungstech HYDRAULIC CIRCUIT ARRANGEMENT FOR OPERATING A HYDRAULIC WORKING CYLINDER
KR100899776B1 (en) * 2007-10-05 2009-05-28 주식회사알피엠텍 Apparatus operating hydraulic actuator for valve

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6068064A (en) * 1998-05-20 2000-05-30 Case Corporation Agricultural implement with ground engaging tool and fluid circuit to control same
DE19956717A1 (en) * 1998-11-25 2000-06-08 Kayaba Industry Co Ltd Hydraulic control appliance for hydraulic shovels etc. has arrangement to prevent load from falling without connected overload relief valve
US20060249016A1 (en) * 2005-03-31 2006-11-09 Nabtesco Corporation Hydraulic circuit and its valve gear

Also Published As

Publication number Publication date
US20110120297A1 (en) 2011-05-26
EP2278169A2 (en) 2011-01-26
DE102009027935A1 (en) 2011-01-27

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