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EP1413773A3 - Computerized electro-hydraulic proportional control device - Google Patents

Computerized electro-hydraulic proportional control device Download PDF

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Publication number
EP1413773A3
EP1413773A3 EP03017275A EP03017275A EP1413773A3 EP 1413773 A3 EP1413773 A3 EP 1413773A3 EP 03017275 A EP03017275 A EP 03017275A EP 03017275 A EP03017275 A EP 03017275A EP 1413773 A3 EP1413773 A3 EP 1413773A3
Authority
EP
European Patent Office
Prior art keywords
valve
inlet
proportional
control
outlet
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.)
Granted
Application number
EP03017275A
Other languages
German (de)
French (fr)
Other versions
EP1413773B1 (en
EP1413773A2 (en
Inventor
Martin Dipl.-Ing. Univ. Heusser
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.)
Hawe Hydraulik GmbH and Co KG
Original Assignee
Hawe Hydraulik GmbH and Co KG
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 Hawe Hydraulik GmbH and Co KG filed Critical Hawe Hydraulik GmbH and Co KG
Publication of EP1413773A2 publication Critical patent/EP1413773A2/en
Publication of EP1413773A3 publication Critical patent/EP1413773A3/en
Application granted granted Critical
Publication of EP1413773B1 publication Critical patent/EP1413773B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F15B11/006—Hydraulic "Wheatstone bridge" circuits, i.e. with four nodes, P-A-T-B, and on-off or proportional valves in each link
    • 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
    • F15B11/003—Systems with 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
    • 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
    • F15B11/042—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed by means in the feed line, i.e. "meter in"
    • 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"

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

Bei einer computerisierten elektrohydraulischen Proportional-Steuervorrichtung für einen Hydromotor (H) für einen Masten (M) eines Krans oder einer Betonpumpe, sind zwischen einer Pumpe (4) und dem Hydromotor (H) Proportional-Steuerventile mit über durch verstellbare Steuerkanten variablen Ventil-Durchgängen (VA1, VA2, VZ1, VZ2) vorgesehen, deren Steuerkanten mechanisch entkoppelt sind, und ist eine Computersteuerung (CU) mit Drucksensoren (9, 10) und den Proportionalmagneten (13 bis 16) der Steuerventile verbunden. Für jede Arbeitsleitung (7, 8) ist zulaufseitig und ablaufseitig je ein 2/2-Wege-Proportional-Regelsitzventil mit variablen Zulauf- und Ablaufdurchgängen (DA, DZ) vorgesehen. Zwischen der Arbeitsleitung (7, 8) und dem Zulaufdurchgang (DZ) ist ein in Strömungsrichtung zum Zulaufdurchgang leckagefrei sperrendes Rückschlagventil (19, 19') angeordnet. Bei nicht bestromten Proportionalmagneten hält das zulaufseitige Ventil eine leckagefreie Zulauf-Absperrstellung und das ablaufseitige Ventil eine leckagefreie Ablauf-Absperrstellung. Jedes Ventil besitzt eine über den Proportionalmagneten gegen Federkraft aktivierbare Druckvorsteuerung (17), mit der ein individueller, durch den Vorsteuerdruck in einem anderen Ventil nicht beeinflussbarer Vorsteuerdruck einstellbar ist.

Figure 00000001
In the case of a computerized electrohydraulic proportional control device for a hydraulic motor (H) for a mast (M) of a crane or a concrete pump, there are proportional control valves between a pump (4) and the hydraulic motor (H) with valve passages which can be varied by means of adjustable control edges (VA1, VA2, VZ1, VZ2) are provided, the control edges of which are mechanically decoupled, and a computer control (CU) is connected to pressure sensors (9, 10) and the proportional magnets (13 to 16) of the control valves. A 2/2-way proportional control seat valve with variable inlet and outlet passages (DA, DZ) is provided for each working line (7, 8) on the inlet and outlet side. Between the working line (7, 8) and the inlet passage (DZ) a non-leakage check valve (19, 19 ') is arranged in the flow direction to the inlet passage. When the proportional solenoids are not energized, the inlet-side valve holds a leak-free inlet shut-off position and the outlet-side valve holds a leak-free outlet shut-off position. Each valve has a pressure pilot control (17) which can be activated against spring force by means of the proportional magnet and with which an individual pilot pressure which cannot be influenced by the pilot pressure in another valve can be set.
Figure 00000001
EP20030017275 2002-10-15 2003-07-30 Computerized electro-hydraulic proportional control device Expired - Lifetime EP1413773B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20215838U DE20215838U1 (en) 2002-10-15 2002-10-15 Computerized electrohydraulic proportional control device
DE20215838U 2002-10-15

Publications (3)

Publication Number Publication Date
EP1413773A2 EP1413773A2 (en) 2004-04-28
EP1413773A3 true EP1413773A3 (en) 2004-05-12
EP1413773B1 EP1413773B1 (en) 2006-03-08

Family

ID=31969835

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20030017275 Expired - Lifetime EP1413773B1 (en) 2002-10-15 2003-07-30 Computerized electro-hydraulic proportional control device

Country Status (2)

Country Link
EP (1) EP1413773B1 (en)
DE (2) DE20215838U1 (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20317749U1 (en) * 2003-11-18 2005-03-24 Hawe Hydraulik Gmbh & Co Kg Electrohydraulic regenerative control device
DE102005010637B4 (en) * 2005-03-08 2007-02-01 Bosch Rexroth Aktiengesellschaft Method of protection against pinching and anti-trap device
DE102005010638A1 (en) * 2005-03-08 2006-09-28 Bosch Rexroth Aktiengesellschaft Hydraulic actuating device, in particular for a convertible
US7444809B2 (en) 2006-01-30 2008-11-04 Caterpillar Inc. Hydraulic regeneration system
DE102006012008A1 (en) * 2006-03-14 2007-09-20 Robert Bosch Gmbh Control device for rotor blade adjustment
DE102006029216A1 (en) * 2006-06-26 2007-12-27 Robert Bosch Gmbh Method for operating an electro-hydraulic convertible top and system for carrying out the method
US7634911B2 (en) 2007-06-29 2009-12-22 Caterpillar Inc. Energy recovery system
EP2199186B1 (en) 2008-12-17 2015-06-03 HAWE Hydraulik SE Hydraulic steering controller
DE102009025827A1 (en) 2009-05-18 2010-11-25 Bucyrus Dbt Europe Gmbh Hydraulic switching device for the mobile hydraulics, mobile hydraulic machine and valve unit
EP2392819B1 (en) * 2010-05-31 2013-04-03 HAWE Hydraulik SE Device for an electrohydraulic adjustment of a pitch angle of rotor blades on a rotor of a wind turbine
US8726645B2 (en) 2010-12-15 2014-05-20 Caterpillar Inc. Hydraulic control system having energy recovery
CN102339026B (en) * 2011-05-26 2014-05-28 昆山航天智能技术有限公司 Horizontal control system for operation platform based on gravity adjustment
DE102012203390A1 (en) * 2012-03-05 2013-09-05 Robert Bosch Gmbh Hydraulic drive system has inlet valve, outlet valve, another outlet valve and another inlet valve that are arranged in row, and designed as seat valves, where regeneration line is provided with source end and destination end
DE102012203387A1 (en) * 2012-03-05 2013-09-05 Robert Bosch Gmbh Valve assembly for hydraulic drive system in mobile working machine, has separate drain valve controlling fluid stream from working connections to tank line, and circulation valve provided for disconnecting and/or releasing pump line
AT514115B1 (en) 2013-04-09 2015-05-15 Ttcontrol Gmbh Electrohydraulic control circuit

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5875701A (en) * 1997-06-09 1999-03-02 Caterpillar Inc. Method and apparatus for controlling an implement of a work machine using linkage angles
EP0900888A1 (en) * 1996-12-03 1999-03-10 Shin Caterpillar Mitsubishi Ltd. Control device for construction machine
US6199378B1 (en) * 1999-09-21 2001-03-13 Caterpillar Inc. Off-setting rate of pressure rise in a fluid system
DE20114538U1 (en) * 2001-09-03 2001-10-31 Küpper-Weisser GmbH, 78199 Bräunlingen Hydraulic system for the self-weight relief of attachments
US6467264B1 (en) * 2001-05-02 2002-10-22 Husco International, Inc. Hydraulic circuit with a return line metering valve and method of operation

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0900888A1 (en) * 1996-12-03 1999-03-10 Shin Caterpillar Mitsubishi Ltd. Control device for construction machine
US5875701A (en) * 1997-06-09 1999-03-02 Caterpillar Inc. Method and apparatus for controlling an implement of a work machine using linkage angles
US6199378B1 (en) * 1999-09-21 2001-03-13 Caterpillar Inc. Off-setting rate of pressure rise in a fluid system
US6467264B1 (en) * 2001-05-02 2002-10-22 Husco International, Inc. Hydraulic circuit with a return line metering valve and method of operation
DE20114538U1 (en) * 2001-09-03 2001-10-31 Küpper-Weisser GmbH, 78199 Bräunlingen Hydraulic system for the self-weight relief of attachments

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
MORLOK JOACHIM: "Klassiker kontra Neuentwicklung?", FLUID, January 2002 (2002-01-01), pages 26 - 29, XP001148165 *

Also Published As

Publication number Publication date
DE50302571D1 (en) 2006-05-04
EP1413773B1 (en) 2006-03-08
EP1413773A2 (en) 2004-04-28
DE20215838U1 (en) 2004-02-26

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