EP1331199A3 - Control system, especially for use in hydraulic lifting devices - Google Patents

Control system, especially for use in hydraulic lifting devices Download PDF

Info

Publication number
EP1331199A3
EP1331199A3 EP02025356A EP02025356A EP1331199A3 EP 1331199 A3 EP1331199 A3 EP 1331199A3 EP 02025356 A EP02025356 A EP 02025356A EP 02025356 A EP02025356 A EP 02025356A EP 1331199 A3 EP1331199 A3 EP 1331199A3
Authority
EP
European Patent Office
Prior art keywords
control system
hydraulic lifting
lifting devices
return line
pressure scale
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
EP02025356A
Other languages
German (de)
French (fr)
Other versions
EP1331199B1 (en
EP1331199A2 (en
Inventor
Hermann Albert
Peter Bruck
Alois Hoffmann
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.)
Hydac Fluidtechnik GmbH
Original Assignee
Hydac Fluidtechnik 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
Application filed by Hydac Fluidtechnik GmbH filed Critical Hydac Fluidtechnik GmbH
Publication of EP1331199A2 publication Critical patent/EP1331199A2/en
Publication of EP1331199A3 publication Critical patent/EP1331199A3/en
Application granted granted Critical
Publication of EP1331199B1 publication Critical patent/EP1331199B1/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
    • F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
    • F15B20/002—Electrical failure
    • 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
    • F15B11/003—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
    • F15B11/05—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed specially adapted to maintain constant speed, e.g. pressure-compensated, load-responsive
    • 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
    • F15B20/008—Valve failure
    • 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
    • F15B2211/40—Flow control
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F15B2211/40576—Assemblies of multiple 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
    • F15B2211/40—Flow control
    • F15B2211/41—Flow control characterised by the positions of the valve element
    • F15B2211/413—Flow 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
    • F15B2211/40—Flow control
    • F15B2211/415—Flow control characterised by the connections of the flow control means in the circuit
    • F15B2211/41581—Flow control characterised by the connections of the flow control means in the circuit being connected to an output member and a return line
    • 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
    • F15B2211/46—Control of flow in the return line, i.e. meter-out control
    • 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
    • F15B2211/575—Pilot pressure control
    • F15B2211/5756—Pilot pressure control for opening a valve
    • 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
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/635—Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements
    • F15B2211/6355—Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements having valve means
    • 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
    • F15B2211/7052—Single-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
    • F15B2211/72—Output members, e.g. hydraulic motors or cylinders or control therefor having locking means

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Transportation (AREA)
  • Analytical Chemistry (AREA)
  • Structural Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Lifting Devices For Agricultural Implements (AREA)
  • Control And Safety Of Cranes (AREA)

Abstract

The control device includes a pressure scale (32) connected to the return line (26) of a hydraulic hoisting mechanism (10). An unblocking mechanism (44) moves the pressure scale to a control position during the lowering of a load to allow the controlled flow of fluid through the return line, or to the blocking position to block the fluid flow through the return line during the failure of a throttle valve.
EP02025356A 2002-01-24 2002-11-14 Control system, especially for use in hydraulic lifting devices Expired - Lifetime EP1331199B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10202607A DE10202607C1 (en) 2002-01-24 2002-01-24 Control device, in particular for use in hydraulically operating lifting devices
DE10202607 2002-01-24

Publications (3)

Publication Number Publication Date
EP1331199A2 EP1331199A2 (en) 2003-07-30
EP1331199A3 true EP1331199A3 (en) 2004-05-12
EP1331199B1 EP1331199B1 (en) 2006-09-13

Family

ID=7712928

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02025356A Expired - Lifetime EP1331199B1 (en) 2002-01-24 2002-11-14 Control system, especially for use in hydraulic lifting devices

Country Status (5)

Country Link
US (1) US6786132B2 (en)
EP (1) EP1331199B1 (en)
AT (1) ATE339386T1 (en)
DE (2) DE10202607C1 (en)
ES (1) ES2271174T3 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007051254A1 (en) * 2005-11-04 2007-05-10 Mark Andrew Fogarty Pressure release valve, system and method of use
JP4729456B2 (en) 2006-08-21 2011-07-20 株式会社豊田自動織機 Hydraulic control device
DE102007062649A1 (en) 2007-12-24 2009-06-25 Hydac Electronic Gmbh valve device
DE102012107256B4 (en) 2012-05-07 2023-08-31 Buchholz Hydraulik Gmbh Hydraulic lifting drive of a mobile working machine
DE102012010522A1 (en) * 2012-05-25 2013-11-28 Hydac Fluidtechnik Gmbh Valve for valve arrangement
CN103629194B (en) * 2013-12-10 2015-11-25 沈阳东北电力调节技术有限公司 The integrated electric hydraulic actuator of mechanical type snap-action
DE102014202436A1 (en) * 2014-02-11 2015-08-13 Franz Xaver Meiller Fahrzeug- Und Maschinenfabrik - Gmbh & Co Kg Hydraulic tilting system for a continuously controllable by means of a tilt valve, not limited in the lowering speed by the tilt valve lowering operation
US9914524B2 (en) * 2015-01-19 2018-03-13 The Boeing Company Latch pin assembly for folding wing tip system
DE102017008359A1 (en) 2017-09-06 2019-03-07 Hydac Fluidtechnik Gmbh Valve
DE102018104586A1 (en) * 2018-02-28 2019-08-29 Jungheinrich Aktiengesellschaft Truck with at least one hydraulic mast lifting cylinder
CN108612700B (en) * 2018-05-18 2020-11-24 安徽仕烽油压科技有限公司 Plug-in type turnover control valve
CN108488130B (en) * 2018-05-18 2019-12-24 江苏南京白马现代农业高新技术产业园有限公司 Control valve device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4239321A1 (en) * 1992-11-23 1994-05-26 Heilmeier & Weinlein Fork lift stacking truck with hydraulic work platform activator - has electrically operated two-way flow regulation to maintain stable platform load position
DE4423644A1 (en) * 1994-07-06 1996-01-11 Buchholz Hydraulik Hydraulic control device for fork lift truck
DE19622763A1 (en) * 1996-06-07 1997-12-11 Rexroth Mannesmann Gmbh Hydraulic control system to maintain constant supply to load
EP0893607A1 (en) * 1997-07-25 1999-01-27 HEILMEIER & WEINLEIN Fabrik für Oel-Hydraulik GmbH & Co. KG Solenoid-actuated outlet valve
DE10010670A1 (en) * 2000-03-04 2001-09-13 Jungheinrich Ag Hydraulic lifting device for battery-operated industrial truck; has hydraulic lifting cylinder, hydraulic pump acting as motor for lowering and electric motor that acts as generator for lowering

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54162353A (en) * 1978-06-13 1979-12-22 Toshiba Corp Hydraulic circuit for driving cargo handling apparatus
DE3621854A1 (en) * 1986-06-30 1988-01-07 Rexroth Mannesmann Gmbh CONTROL CIRCUIT FOR A HYDRAULIC POWER LIFT CONTROL SYSTEM
EP0877863A1 (en) * 1996-01-30 1998-11-18 Mannesmann Rexroth AG Hydraulic device for controlling a hydraulic-fluid flow

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4239321A1 (en) * 1992-11-23 1994-05-26 Heilmeier & Weinlein Fork lift stacking truck with hydraulic work platform activator - has electrically operated two-way flow regulation to maintain stable platform load position
DE4423644A1 (en) * 1994-07-06 1996-01-11 Buchholz Hydraulik Hydraulic control device for fork lift truck
DE19622763A1 (en) * 1996-06-07 1997-12-11 Rexroth Mannesmann Gmbh Hydraulic control system to maintain constant supply to load
EP0893607A1 (en) * 1997-07-25 1999-01-27 HEILMEIER & WEINLEIN Fabrik für Oel-Hydraulik GmbH & Co. KG Solenoid-actuated outlet valve
DE10010670A1 (en) * 2000-03-04 2001-09-13 Jungheinrich Ag Hydraulic lifting device for battery-operated industrial truck; has hydraulic lifting cylinder, hydraulic pump acting as motor for lowering and electric motor that acts as generator for lowering

Also Published As

Publication number Publication date
US6786132B2 (en) 2004-09-07
EP1331199B1 (en) 2006-09-13
US20030136124A1 (en) 2003-07-24
DE10202607C1 (en) 2003-07-31
ES2271174T3 (en) 2007-04-16
ATE339386T1 (en) 2006-10-15
DE50208129D1 (en) 2006-10-26
EP1331199A2 (en) 2003-07-30

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