EP1308415A2 - Dispositif de levage hydraulique en particulier pour chariots industriels alimentés par batterie et son procédé de commande - Google Patents

Dispositif de levage hydraulique en particulier pour chariots industriels alimentés par batterie et son procédé de commande Download PDF

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Publication number
EP1308415A2
EP1308415A2 EP02024330A EP02024330A EP1308415A2 EP 1308415 A2 EP1308415 A2 EP 1308415A2 EP 02024330 A EP02024330 A EP 02024330A EP 02024330 A EP02024330 A EP 02024330A EP 1308415 A2 EP1308415 A2 EP 1308415A2
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EP
European Patent Office
Prior art keywords
pump
pressure
hydraulic
line
load
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
EP02024330A
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German (de)
English (en)
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EP1308415A3 (fr
EP1308415B1 (fr
Inventor
Octavian Mare
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.)
Dambach Lagersysteme & Co KG GmbH
Original Assignee
Dambach Lagersysteme & Co KG GmbH
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Publication of EP1308415A2 publication Critical patent/EP1308415A2/fr
Publication of EP1308415A3 publication Critical patent/EP1308415A3/fr
Application granted granted Critical
Publication of EP1308415B1 publication Critical patent/EP1308415B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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"
    • 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
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/14—Energy-recuperation 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
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20538—Type of pump constant capacity
    • 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
    • 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
    • F15B2211/3056—Assemblies of multiple valves
    • F15B2211/30565—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve
    • F15B2211/3057—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve having two valves, one for each port of a double-acting 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
    • F15B2211/40—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
    • F15B2211/41—Flow control characterised by the positions of the valve element
    • F15B2211/411—Flow control characterised by the positions of the valve element the positions being discrete
    • 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
    • F15B2211/42—Flow control characterised by the type of actuation
    • F15B2211/426—Flow control characterised by the type of actuation electrically or electronically
    • 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
    • F15B2211/505—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
    • 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
    • F15B2211/50536—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using unloading valves controlling the supply pressure by diverting fluid to the 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
    • F15B2211/50—Pressure control
    • F15B2211/515—Pressure control characterised by the connections of the pressure control means in the circuit
    • F15B2211/5151—Pressure control characterised by the connections of the pressure control means in the circuit being connected to a pressure source and a directional control 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
    • F15B2211/50—Pressure control
    • F15B2211/52—Pressure control characterised by the type of actuation
    • F15B2211/526—Pressure control characterised by the type of actuation electrically or electronically
    • 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
    • F15B2211/52—Pressure control characterised by the type of actuation
    • F15B2211/528—Pressure control characterised by the type of actuation actuated by fluid 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
    • F15B2211/50—Pressure control
    • F15B2211/55—Pressure control for limiting a pressure up to a maximum pressure, e.g. by using a pressure relief 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
    • F15B2211/70—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
    • F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
    • F15B2211/7114—Multiple output members, e.g. multiple hydraulic motors or cylinders with direct connection between the chambers of different actuators
    • F15B2211/7128—Multiple output members, e.g. multiple hydraulic motors or cylinders with direct connection between the chambers of different actuators the chambers being connected in parallel
    • 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
    • F15B2211/75—Control of speed of the output member

Definitions

  • the invention relates to a method for controlling a hydraulic lifting device, in particular for battery-operated Industrial trucks, one of an electric motor has drivable pump, by means of the lifting operation hydraulic oil from at least one hydraulic lifting cylinder fed to a storage container via a feed line is, the hydraulic oil in the load lowering mode from the lifting cylinder via a return flow line flowing through the driving the electric motor working as a generator Pump is returned to the reservoir.
  • This task is related to the control method a hydraulic lifting device solved in that at the start of load-lowering operation both in the upstream of the pump located section of the return line as well as in downstream portion of the return line essentially the hydraulic in the lifting cylinder Pressure is built up, the pump with an actual speed is operated below a speed limit lies, and that a downstream in the return line Pump arranged proportional pressure relief valve only then essentially completely via a ramp function is opened when the actual speed of the pump is above the speed limit, the electric motor then works as a generator.
  • a second check valve RV2 is arranged, that is a flow in the return direction, i.e. from the third Section L1.3 of the feed line L1 to the third section L2.3 allows the return line L2 and a flow prevented in the opposite direction.
  • the hydraulic oil quantity delivered by pump P is exact corresponds to the amount of hydraulic oil generated by the volume flow controller SR1 is drained, the position of the Lift cylinder held.
  • the individual hydraulic oil quantities and correspondingly the difference between the funded and the drained hydraulic oil quantity can over a change in the speed of the pump and / or via the Current supply and thus the degree of opening of the volume flow controller SR1 can be influenced.
  • the third seat valve SV3 is closed and the pressure at the proportional pressure relief valve PDBV on the prevailing load pressure, the is detected by means of the first pressure transducer DA1. Then the first seat valve SV1 and the second seat valve SV2 opened and the speed the pump P until the desired lifting speed the lifting cylinder 12 is reached. From there on can continue the pending process in the above manner to be continued.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Fluid Mechanics (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Geology (AREA)
  • Civil Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Fluid-Pressure Circuits (AREA)
EP20020024330 2001-11-06 2002-11-02 Dispositif de levage hydraulique en particulier pour chariots industriels alimentés par batterie et son procédé de commande Expired - Lifetime EP1308415B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2001154449 DE10154449A1 (de) 2001-11-06 2001-11-06 Hydraulische Hubvorrichtung insbesondere für batteriegetriebene Flurförderzeuge und Verfahren zu deren Steuerung
DE10154449 2001-11-06

Publications (3)

Publication Number Publication Date
EP1308415A2 true EP1308415A2 (fr) 2003-05-07
EP1308415A3 EP1308415A3 (fr) 2005-05-25
EP1308415B1 EP1308415B1 (fr) 2007-02-07

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ID=7704772

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20020024330 Expired - Lifetime EP1308415B1 (fr) 2001-11-06 2002-11-02 Dispositif de levage hydraulique en particulier pour chariots industriels alimentés par batterie et son procédé de commande

Country Status (2)

Country Link
EP (1) EP1308415B1 (fr)
DE (2) DE10154449A1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1369377A3 (fr) * 2002-06-05 2006-07-05 BT Industries Procédé de commande pour chariot élévateur
WO2011060844A1 (fr) * 2009-11-17 2011-05-26 Robert Bosch Gmbh Entraînement hydraulique à récupération d'énergie
CN102116285A (zh) * 2010-01-05 2011-07-06 雷蒙德股份有限公司 监视物料运输车辆上液压泵的装置和方法
EP2508464A2 (fr) * 2010-05-20 2012-10-10 Doosan Industrial Vehicle Co., Ltd. Système de récupération d'énergie pour chariot élévateur électrique
EP2660184A1 (fr) * 2010-12-28 2013-11-06 Sunward Intelligent Equipment Co., Ltd. Système de production d'électricité à régénération d'énergie applicable à un véhicule pour le chargement, le déchargement et le transport
EP3165496A1 (fr) * 2015-11-05 2017-05-10 Kabushiki Kaisha Toyota Jidoshokki Véhicule industriel
CN107601391A (zh) * 2017-09-22 2018-01-19 太仓市高泰机械有限公司 一种液压车的自动感应及自锁方法
CN107601390A (zh) * 2017-09-22 2018-01-19 太仓市高泰机械有限公司 一种带有自锁功能的液压车的工作方法
CN112209305A (zh) * 2020-10-30 2021-01-12 合力工业车辆（上海）有限公司 一种仓储叉车液压系统
WO2022193769A1 (fr) * 2021-03-19 2022-09-22 湖南星邦智能装备股份有限公司 Boucle de commande de vérin à huile flottante à double effet

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012005432A1 (de) * 2012-03-17 2013-09-19 Jungheinrich Aktiengesellschaft Flurförderzeug mit mindestens einem Hubzylinder
CN107458999A (zh) * 2017-09-22 2017-12-12 太仓市高泰机械有限公司 一种带有阻尼减震装置的自调型液压车
CN107352473A (zh) * 2017-09-22 2017-11-17 太仓市高泰机械有限公司 一种自调型液压车的工作方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4416173A1 (de) * 1994-05-06 1995-11-09 Jungheinrich Ag Hydraulische Hubvorrichtung für batteriebetriebene Flurförderzeuge oder dergleichen
EP0908413A2 (fr) * 1997-10-08 1999-04-14 Still Wagner GmbH & Co. KG Chariot élévateur avec un dispositif de prise de la charge et procédé pour descendre le dispositif de prise de la charge
DE19921629A1 (de) * 1999-05-10 2000-11-16 Dambach Lagersysteme Gmbh Hydraulische Hubvorrichtung
EP1193211A2 (fr) * 2000-09-28 2002-04-03 STILL WAGNER GmbH & Co KG Dispositif de levage hydraulique

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4416173A1 (de) * 1994-05-06 1995-11-09 Jungheinrich Ag Hydraulische Hubvorrichtung für batteriebetriebene Flurförderzeuge oder dergleichen
EP0908413A2 (fr) * 1997-10-08 1999-04-14 Still Wagner GmbH & Co. KG Chariot élévateur avec un dispositif de prise de la charge et procédé pour descendre le dispositif de prise de la charge
DE19921629A1 (de) * 1999-05-10 2000-11-16 Dambach Lagersysteme Gmbh Hydraulische Hubvorrichtung
EP1193211A2 (fr) * 2000-09-28 2002-04-03 STILL WAGNER GmbH & Co KG Dispositif de levage hydraulique

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1369377A3 (fr) * 2002-06-05 2006-07-05 BT Industries Procédé de commande pour chariot élévateur
WO2011060844A1 (fr) * 2009-11-17 2011-05-26 Robert Bosch Gmbh Entraînement hydraulique à récupération d'énergie
US20130199170A1 (en) * 2009-11-17 2013-08-08 Robert Bosch Gmbh Hydraulic Drive with Energy Recovery
CN102116285A (zh) * 2010-01-05 2011-07-06 雷蒙德股份有限公司 监视物料运输车辆上液压泵的装置和方法
US20110162447A1 (en) * 2010-01-05 2011-07-07 John Bryant Kirk Apparatus and method for monitoring a hydraulic pump on a material handling vehicle
US8196464B2 (en) * 2010-01-05 2012-06-12 The Raymond Corporation Apparatus and method for monitoring a hydraulic pump on a material handling vehicle
CN102116285B (zh) * 2010-01-05 2015-03-04 雷蒙德股份有限公司 监视物料运输车辆上液压泵的装置和方法
EP2508464A4 (fr) * 2010-05-20 2014-09-10 Doosan Corp Système de récupération d'énergie pour chariot élévateur électrique
EP2508464A2 (fr) * 2010-05-20 2012-10-10 Doosan Industrial Vehicle Co., Ltd. Système de récupération d'énergie pour chariot élévateur électrique
US9079755B2 (en) 2010-05-20 2015-07-14 Doosan Corporation Energy reclaiming system for electric forklift truck
EP2660184A1 (fr) * 2010-12-28 2013-11-06 Sunward Intelligent Equipment Co., Ltd. Système de production d'électricité à régénération d'énergie applicable à un véhicule pour le chargement, le déchargement et le transport
EP2660184A4 (fr) * 2010-12-28 2014-09-17 Sunward Intelligent Equipment Système de production d'électricité à régénération d'énergie applicable à un véhicule pour le chargement, le déchargement et le transport
US9422949B2 (en) 2010-12-28 2016-08-23 Sunward Intelligent Equipment Co., Ltd. Energy-recovery generation system for handling and carrying electric vehicle
EP3165496A1 (fr) * 2015-11-05 2017-05-10 Kabushiki Kaisha Toyota Jidoshokki Véhicule industriel
CN107601391A (zh) * 2017-09-22 2018-01-19 太仓市高泰机械有限公司 一种液压车的自动感应及自锁方法
CN107601390A (zh) * 2017-09-22 2018-01-19 太仓市高泰机械有限公司 一种带有自锁功能的液压车的工作方法
CN112209305A (zh) * 2020-10-30 2021-01-12 合力工业车辆（上海）有限公司 一种仓储叉车液压系统
WO2022193769A1 (fr) * 2021-03-19 2022-09-22 湖南星邦智能装备股份有限公司 Boucle de commande de vérin à huile flottante à double effet

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EP1308415B1 (fr) 2007-02-07

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