EP1193211B1 - Dispositif de levage hydraulique - Google Patents

Dispositif de levage hydraulique Download PDF

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Publication number
EP1193211B1
EP1193211B1 EP01122968A EP01122968A EP1193211B1 EP 1193211 B1 EP1193211 B1 EP 1193211B1 EP 01122968 A EP01122968 A EP 01122968A EP 01122968 A EP01122968 A EP 01122968A EP 1193211 B1 EP1193211 B1 EP 1193211B1
Authority
EP
European Patent Office
Prior art keywords
lowering
lifting device
valve
hydraulic lifting
hydraulic
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.)
Expired - Lifetime
Application number
EP01122968A
Other languages
German (de)
English (en)
Other versions
EP1193211A3 (fr
EP1193211A2 (fr
Inventor
Ralf Mebert
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.)
Still Wagner GmbH and Co KG
Original Assignee
Still Wagner 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 Still Wagner GmbH and Co KG filed Critical Still Wagner GmbH and Co KG
Publication of EP1193211A2 publication Critical patent/EP1193211A2/fr
Publication of EP1193211A3 publication Critical patent/EP1193211A3/fr
Application granted granted Critical
Publication of EP1193211B1 publication Critical patent/EP1193211B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F15B11/04—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"
    • 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
    • F15B2211/40—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
    • F15B2211/40553—Flow control characterised by the type of flow control means or valve with pressure compensating valves
    • F15B2211/40569—Flow control characterised by the type of flow control means or valve with pressure compensating valves the pressure compensating valve arranged downstream of the flow control 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
    • F15B2211/40—Flow control
    • F15B2211/415—Flow control characterised by the connections of the flow control means in the circuit
    • F15B2211/41509—Flow control characterised by the connections of the flow 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
    • F15B2211/40—Flow control
    • F15B2211/415—Flow control characterised by the connections of the flow control means in the circuit
    • F15B2211/41527—Flow control characterised by the connections of the flow control means in the circuit being connected to an output member 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
    • F15B2211/40—Flow control
    • F15B2211/455—Control of flow in the feed line, i.e. meter-in 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
    • F15B2211/40—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
    • F15B2211/70—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
    • 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 hydraulic lifting device for a battery-electrically operated machine, in particular industrial truck, wherein the lifting device has a vertically movable load-receiving means, which is in operative connection with at least one hydraulic lifting cylinder, wherein the lifting cylinder by means of a pressure medium line with a lifting operation as a pump and im Lowering operation as a motor operating hydraulic unit is in communication, which is in operative connection with a working in the lifting operation as a motor and sink operation as a generator electric machine.
  • Such lifting devices are used in battery-powered electrical machines, such as industrial trucks.
  • the lifting of the vertically movable load-receiving means takes place here by means of at least one lifting cylinder which is connected to the hydraulic unit, which operates as a pump in the lifting operation, promotes pressure medium to the lifting cylinder and is driven by the working as a motor electric machine.
  • the pressure medium flow flowing out of the lifting cylinder is passed through the hydraulic unit, which operates as a pump in sink operation and drives the electric machine operating as a generator.
  • the potential energy of the load released during lowering of the lifting device can be recovered by the potential energy is converted by the electric machine operating as a generator into electrical energy and fed into the battery. Energy recovery during sinking results in a longer battery charge life, allowing the truck to have a higher throughput with one battery charge.
  • the load is based on opening a arranged between the lifting cylinder and the hydraulic unit load-holding valve exclusively on the hydraulic unit and coupled to this electric machine.
  • a speed control of the electric machine can lead to an inaccurate setting of the lowering speed, since the leakage occurring at the hydraulic machine is not detected by the speed sensor of the electric machine and thus the leakage of the hydraulic machine in the setting of Lowering speed is not taken into account.
  • a lifting device in which a proportional valve for controlling the lowering movement is provided.
  • the proportional valve In sink operation in the fine control range, the proportional valve is in a flow position. At high lowering speeds, the proportional valve is opened in a flow position.
  • the hydraulic unit is driven by the pressure fluid flowing out of the lifting cylinder, whereby an energy recovery is possible.
  • the proportional valve is flowed through the entire sink operation, which in particular at high sinking speeds on the proportional valve due to the high pressure medium flow, a high pressure drop occurs.
  • the lowering speed can be set accurately in the fine control range, however, due to the pressure loss occurring at the proportional valve at high lowering speeds, the proportion of recoverable energy is reduced.
  • the present invention has for its object to provide a lifting device of the type mentioned above, which allows fine control in low sink speeds accurate adjustment of the sink speed and high sink rates effective energy recovery.
  • This object is achieved in that branches off from the pressure medium line guided to a container branch line in which a drain valve to control the lowering movement is arranged in the fine control range.
  • the lowering movement is thus controlled by the lowering valve when lowering in the fine control range, wherein the pressure fluid flowing from the lifting cylinder flows via the drain valve to the container.
  • the lowering speed in the fine control range can be set in a simple manner. Due to the low pressure medium flows in the fine control range, the drain valve is designed for low flow rates and therefore has a low construction cost and space requirements.
  • the drain valve is designed as a proportional valve and can be acted upon to control the lowering movement in the fine control range in a flow position.
  • the lowering speed can be set precisely in a simple manner in the lowering operation in the fine control range, wherein the entire proportional range of the lowering valve can be used to control the lowering movement in the fine control range.
  • the drain valve has a blocking position formed as a seat valve. In the blocking position thus a flow of pressure medium is avoided to the container. This can be in the neutral position or In lifting operation, a pressure medium flow from the lifting cylinder via the branch line to the container can be prevented in a simple manner.
  • a load-holding valve is arranged in the pressure medium line between the hydraulic unit and the connection of the branch line.
  • the load-holding valve can be opened in an open position and the electric machine can be operated in generator mode.
  • the lowering movement at high lowering speeds thus takes place by the electrical machine operated as a generator, energy recovery taking place.
  • Due to the arrangement of the drain valve in the branch line branching off from the pressure medium line no pressure loss between the lift cylinder and the hydraulic unit caused by the drain valve occurs at high sink rates.
  • the load-holding valve is arranged, which is flowed through by the hydraulic cylinder from the lifting cylinder flowing pressure medium flow, whereby low pressure losses occur and thus the potential energy of the load at high sink rates without significant losses electrical energy can be recovered.
  • the lowering valve can be acted upon reaching a limit lowering speed in the blocking position according to an embodiment of the invention.
  • the proportional valve is thus in a blocking position, whereby an outflow of pressure medium to the container is avoided and it is achieved that the hydraulic fluid flowing from the lifting cylinder flows through the hydraulic unit operated as a motor and drives the electric machine operating as a generator.
  • the lowering valve can be acted upon reaching the lowering limit speed in the flow position. At high lowering speeds, therefore, the proportional valve remains in the fully open flow position. This results in a simpler Control engineering transition from lowering in the fine control range via the proportional valve for regenerative lowering at high sink speeds via the hydraulic unit. Due to the low pressure medium flow in the branch line in this case from the flowing to the container pressure medium flow in relation to the inflow of hydraulic fluid to the hydraulic medium low, whereby an effective energy recovery is achieved at high lowering speeds.
  • a measuring device for detecting the movement speed of the load-receiving means.
  • detecting the movement speed of the load receiving means measuring device can be easily generated a feedback signal for controlling the drain valve in the sink operation in the fine control range or for controlling the electric machine in sink operation at high sink rates and in lifting operation.
  • the measuring device is designed as a displacement sensor.
  • a displacement sensor for example, arranged on the displacement sensor, the movement speed of the load-receiving means can be detected in a simple manner.
  • the electric machine can be operated at a minimum speed in lifting operation in the fine control range, special advantages arise if the drain valve can be acted upon in a flow position.
  • the in the lifting operation in the fine control range of the operated as a pump hydraulic unit by the operation at a minimum speed excess flow promoted pressure medium flow can thereby easily flow through the drain valve to the container. As a result, it is achieved without additional effort that the lifting speed in the lifting operation in the fine control range can be accurately adjusted.
  • the electric machine can be designed as a DC machine. Particular advantages arise when the electrical machine is designed as an asynchronous machine. With an asynchronous machine results in the sink operation, an automatic recovery of electrical energy into the battery, resulting in a low construction cost for the lifting device.
  • a lifting device 1 for a truck no longer shown is shown.
  • the lifting device 1 has a hydraulic unit 2, which is in drive connection with an electric machine 3, for example a DC or asynchronous machine.
  • the electric machine 3 is in this case for the supply of electrical energy with a battery not shown in operative connection.
  • the hydraulic unit 2 is connected to a container 5 and a pressure medium line 6 in connection, which is guided to lifting cylinders 7.
  • a pipe rupture protection 8 is arranged in each case.
  • a load-holding valve 10 is arranged in the pressure medium line 6, a load-holding valve 10 is arranged.
  • the load-holding valve 10 has a blocking position 10a designed as a seat valve and a flow-through position 10b. In the direction of the blocking position 10a, the load-holding valve 10 is acted upon by a spring 11.
  • an actuating device 12 for example a solenoid, the load-holding valve 10 can be acted upon in the flow position 10b.
  • a drain valve 16 is arranged.
  • the lowering valve 16 is designed as a proportional valve throttling in intermediate positions and has a blocking position 16a designed as a seat valve and a flow position 16b. In the direction of the blocking position 16a, the drain valve 16 is acted upon by means of a spring 17.
  • an actuating device 18 for example, a proportional solenoid, the drain valve 16 in the direction of the flow position 16b can be acted upon.
  • a measuring device 20 for example, a displacement sensor, arranged to detect the speed of movement.
  • the load-holding valve 10 In the illustrated neutral position of the lifting device 1, the load-holding valve 10 is in the blocking position 10a.
  • the drain valve 16 is also located in the blocking position 16a.
  • the lifting cylinders 7 are thus shut off leak oil-free, whereby an unintentional lowering of the upcoming on the lifting cylinders 7 load is avoided.
  • the electric machine 3 is operated in accordance with the specification of a desired value specification device, for example a joystick, whereby the hydraulic unit 2 operated as a pump supplies the quantity of pressure medium required to achieve the predetermined lifting speed.
  • a desired value specification device for example a joystick
  • the hydraulic unit 2 operated as a pump supplies the quantity of pressure medium required to achieve the predetermined lifting speed.
  • the electric machine 3 can in this case be operated at a predetermined minimum speed, whereby the lifting medium operating in the fine control range of the working as a pump hydraulic unit 2, a pressure medium requirement of the lifting cylinder 7 is increased above the pressure medium flow.
  • the lifting medium operating in the fine control range of the working as a pump hydraulic unit 2 By controlling the lowering valve 16 into the flow position 16b, the excess pressure medium flow conveyed by the hydraulic unit 2 acting as a pump can flow off to the container 5 in a simple manner. This makes it possible in a simple manner that the lifting cylinder 7 are operated when lifting in the fine control range with the predetermined lifting speed.
  • a setpoint speed of the load receiving means is predetermined by the setpoint input device.
  • the lowering valve 16 In the fine control range at low lowering speeds, the lowering valve 16 is acted upon by a corresponding actuation of the actuating device 18 of the lowering valve 16 as a function of the specification of the desired value setting device in the flow position 16b. Pressure fluid thus flows from the lifting cylinders 7 via the acted upon in a flow position 16b lowering valve 16 to the container. In the fine control range, therefore, the lowering speed is adjusted by the lowering valve 16, the entire proportional range of the lowering valve 16 being used for controlling the lowering movement in the fine control range.
  • the signal of the measuring device 20 can be used here as a feedback signal for controlling the drain valve 16.
  • the load holding valve 10 is opened by a corresponding actuation of the actuating device 12 into the flow position 10b.
  • Pressure fluid thus flows from the lifting cylinders 7 to the hydraulic unit 2, which is operated as a motor and which operates as a generator operating electric machine 3.
  • the potential energy of the load at high sink speed can thus be recovered by the generator operation of the electric machine 2 and fed into the battery.
  • the signal of the measuring device 20 can be used here as a feedback signal for speed control of the electric machine.
  • the drain valve 16 may be completely turned on in the flow position 16b or acted upon in the blocking position 16.

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

Claims (12)

  1. Dispositif de levage hydraulique pour un engin de travail fonctionnant électriquement par batterie, notamment un chariot de manutention, dans lequel le dispositif de levage présente un moyen de réception de la charge déplaçable verticalement, qui est en liaison fonctionnelle avec au moins un vérin de levage hydraulique, le vérin de levage étant en liaison au moyen d'une conduite de fluide sous pression avec une unité hydraulique fonctionnant en mode de levage comme une pompe et en mode d'abaissement comme un moteur, qui est en liaison d'entraînement avec une machine électrique fonctionnant en mode de levage comme moteur et en mode d'abaissement comme générateur, caractérisé en ce qu'une conduite de dérivation (15) allant vers un récipient (5) part de la conduite de fluide sous pression (6), une soupape d'abaissement (16) pour la commande du mouvement d'abaissement dans la plage de commande précise étant disposée dans la conduite de dérivation (15).
  2. Dispositif de levage hydraulique selon la revendication 1, caractérisé en ce que la soupape d'abaissement (16) est réalisée sous forme de soupape proportionnelle et peut être sollicitée dans une position de passage (16b) pour la commande du mouvement d'abaissement dans la plage de commande précise.
  3. Dispositif de levage hydraulique selon la revendication 1 ou 2, caractérisé en ce que la soupape d'abaissement (16) présente une position de blocage (16a) réalisée sous forme de soupape à siège.
  4. Dispositif de levage hydraulique selon l'une quelconque des revendications 1 à 3, caractérisé en ce que l'on dispose une soupape de retenue de la charge (10) dans la conduite de fluide sous pression (6) entre l'unité hydraulique (2) et le raccordement de la conduite de dérivation (15).
  5. Dispositif de levage hydraulique selon la revendication 4, caractérisé en ce qu'à l'obtention d'une vitesse limite d'abaissement, la soupape de retenue de la charge (10) peut être commandée dans une position d'ouverture et la machine électrique (3) peut être actionnée en mode de générateur.
  6. Dispositif de levage hydraulique selon la revendication 5, caractérisé en ce que la soupape d'abaissement (16) est sollicitée dans la position de blocage (16a) à l'obtention de la vitesse limite d'abaissement.
  7. Dispositif de levage hydraulique selon la revendication 5, caractérisé en ce que la soupape d'abaissement (16) est sollicitée dans la position de passage (16b) à l'obtention de la vitesse limite d'abaissement.
  8. Dispositif de levage hydraulique selon l'une quelconque des revendications 1 à 7, caractérisé en ce que l'on prévoit un dispositif de mesure (20) pour détecter la vitesse du déplacement du moyen de réception de la charge.
  9. Dispositif de levage hydraulique selon la revendication 8, caractérisé en ce que le dispositif de mesure (20) est réalisé sous forme de capteur de position.
  10. Dispositif de levage hydraulique selon l'une quelconque des revendications 1 à 9, dans lequel, en mode de levage, la machine électrique (3) peut être actionnée dans la plage de commande précise avec une vitesse minimale, caractérisé en ce que la soupape d'abaissement (16) peut être sollicitée dans une position de passage (16b).
  11. Dispositif de levage hydraulique selon l'une quelconque des revendications 1 à 10, caractérisé en ce que la machine électrique (3) est réalisée sous forme de machine à courant continu.
  12. Dispositif de levage hydraulique selon l'une quelconque des revendications 1 à 10, caractérisé en ce que la machine électrique (3) est réalisée sous forme de machine asynchrone.
EP01122968A 2000-09-28 2001-09-25 Dispositif de levage hydraulique Expired - Lifetime EP1193211B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10048215A DE10048215A1 (de) 2000-09-28 2000-09-28 Hydraulische Hubvorrichtung
DE10048215 2000-09-28

Publications (3)

Publication Number Publication Date
EP1193211A2 EP1193211A2 (fr) 2002-04-03
EP1193211A3 EP1193211A3 (fr) 2005-12-14
EP1193211B1 true EP1193211B1 (fr) 2007-01-24

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP01122968A Expired - Lifetime EP1193211B1 (fr) 2000-09-28 2001-09-25 Dispositif de levage hydraulique

Country Status (3)

Country Link
EP (1) EP1193211B1 (fr)
AT (1) ATE352515T1 (fr)
DE (2) DE10048215A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3178778A1 (fr) 2015-12-10 2017-06-14 UniCarriers Europe AB Système hydraulique avec régénération d'énergie et procédé de régénération d'énergie dans un système hydraulique
DE102019111295A1 (de) * 2019-05-02 2020-11-05 Jungheinrich Aktiengesellschaft Hydraulikanordnung für ein Flurförderzeug

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DE10154449A1 (de) * 2001-11-06 2003-05-15 Dambach Lagersysteme Gmbh & Co Hydraulische Hubvorrichtung insbesondere für batteriegetriebene Flurförderzeuge und Verfahren zu deren Steuerung
SE525159C2 (sv) * 2002-06-05 2004-12-14 Bt Ind Ab Förfarande för att styra sänkningsrörelsen för en trucks luftcylinder
FI123664B (fi) * 2008-02-29 2013-09-13 Metso Paper Inc Paperi- tai kartonkikoneessa käytetyn laitteiston kuormitussylinterin hydraulijärjestelmä sekä menetelmä kuormitussylinterin paineistamiseksi hydraulijärjestelmässä
US8935058B2 (en) 2011-02-16 2015-01-13 Crown Equipment Corporation Materials handling vehicle estimating a speed of a movable assembly from a lift motor speed
US9360023B2 (en) * 2013-03-14 2016-06-07 The Raymond Corporation Hydraulic regeneration system and method for a material handling vehicle
WO2014207474A2 (fr) 2013-06-26 2014-12-31 Parker Hannifin Manufacturing Limited Système de commande de véhicule électrique économe en énergie
US10844880B2 (en) 2017-01-17 2020-11-24 The Raymond Corporation Variable hydraulic pressure relief systems and methods for a material handling vehicle
AU2018202033B2 (en) * 2017-03-23 2023-06-01 The Raymond Corporation Systems and methods for mast stabilization on a material handling vehicle
CN114207296A (zh) * 2019-07-08 2022-03-18 丹佛斯动力系统Ii技术有限公司 液压系统架构和可用于系统架构中的双向比例阀

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56122774A (en) * 1980-02-26 1981-09-26 Oirudoraibu Kogyo Kk Oil pressure elevator
DE4317782C2 (de) * 1993-05-28 1996-01-18 Jungheinrich Ag Hydraulische Hubvorrichtung für batteriegetriebene Flurförderzeuge oder dergleichen
DE19744429A1 (de) * 1997-10-08 1999-04-22 Still Wagner Gmbh & Co Kg Flurförderfahrzeug mit einer Lastaufnahmevorrichtung und Verfahren zum Absenken der Lastaufnahmevorrichtung

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3178778A1 (fr) 2015-12-10 2017-06-14 UniCarriers Europe AB Système hydraulique avec régénération d'énergie et procédé de régénération d'énergie dans un système hydraulique
DE102019111295A1 (de) * 2019-05-02 2020-11-05 Jungheinrich Aktiengesellschaft Hydraulikanordnung für ein Flurförderzeug

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DE50111941D1 (de) 2007-03-15
DE10048215A1 (de) 2002-04-11
EP1193211A3 (fr) 2005-12-14
EP1193211A2 (fr) 2002-04-03
ATE352515T1 (de) 2007-02-15

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