EP1308415A2 - Hydraulische Hubvorrichtung insbesondere für batteriegetriebene Flurförderzeuge und Verfahren zu deren Steuerung - Google Patents
Hydraulische Hubvorrichtung insbesondere für batteriegetriebene Flurförderzeuge und Verfahren zu deren Steuerung Download PDFInfo
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- 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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- Prior art keywords
- pump
- pressure
- hydraulic
- line
- load
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Classifications
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- 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"
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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)
- Transportation (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Structural Engineering (AREA)
- Analytical Chemistry (AREA)
- Civil Engineering (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
Description
- Figur 1
- ein schematisches Schaltbild einer erfindungsgemäßen hydraulischen Hubvorrichtung, und
- Figur 2
- eine Abwandlung des Schaltbildes gemäß Fig. 1.
- Die Überbrückungsleitung L5 ist entfallen,
- statt des proportionalen Druckregelventils PDRV, das ebenfalls entfallen ist, ist eine Düse D1 in dem zweiten Abschnitt L2.2 der Rückführleitung L2 angeordnet. Von dem zweiten Abschnitt L2.2. der Rückführleitung L2 zweigt weiterhin stromauf der Düse D1 die Druckleitung LDA3 ab, die zum dem dritten Druckaufnehmer DA3 führt.
- Von der zu dem dritten Druckaufnehmer DA3 führenden Druckleitung LDA3 zweigt eine Verbindungsleitung L8 ab, die stromab des proportionalen Druckbegrenzungsventils PDBV in die Zweileitung L6 mündet, die zum Vorratsbehälter 11 führt.
- In der Verbindungsleitung L8 ist ein Volumenstromregler SR1 angeordnet.
Claims (6)
- Verfahren zur Steuerung einer hydraulischen Hubvorrichtung insbesondere für batteriegetriebene Flurförderzeuge, die eine von einem Elektromotor (M) antreibbare Pumpe (P) aufweist, mittels der im Lasthebebetrieb zumindest einem hydraulischen Hubzylinder (12) Hydrauliköl aus einem Vorratsbehälter (11) über eine Zuführleitung (L1) zugeführt wird, wobei das Hydrauliköl im Lastsenkbetrieb von dem Hubzylinder (12) über eine Rückströmleitung (L2,L3,L1.2,L6) unter Durchströmen der den als Generator arbeitenden Elektromotor (M) antreibenden Pumpe (P) in den Vorratsbehälter (11) zurückgeführt wird, dadurch gekennzeichnet, daß zu Beginn des Lastsenkbetriebs sowohl im stromauf der Pumpe (P) gelegenen Abschnitt (L2.3) der Rückströmleitung als auch im stromab der Pumpe (P) gelegenen Abschnitt (L1.2) der Rückströmleitung im wesentlichen der im Hubzylinder (12) herrschende hydraulische Druck aufgebaut wird, wobei die Pumpe mit einer IST-Drehzahl betrieben wird, die unterhalb eines Drehzahl-Grenzwertes liegt, und daß ein in der Rückströmleitung stromab der Pumpe (P) angeordnetes proportionales Druckbegrenzungsventil (PDBV) über eine Rampenfunktion erst dann im wesentlichen vollständig geöffnet wird, wenn die IST-Drehzahl der Pumpe oberhalb des Drehzahl-Grenzwertes liegt, wobei der Elektromotor (M) dann als Generator arbeitet.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der Druck in der Rückströmleitung zu Beginn des Lastsenkbetriebes mittels eines proportionalen Druckregelventils (PDRV), das stromauf der Pumpe (P) angeordnet ist, über eine Rampenfunktion auf dem im Hubzylinder (12) herrschenden hydraulischen Druck gebracht wird.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Pumpe (P) zu Beginn des Lasthebebetriebes das Hydrauliköl solange über eine Zweigleitung (L6) drucklos in den Vorratsbehälter (11) zurückleitet, wie die IST-Drehzahl der Pumpe unterhalb des Drehzahl-Grenzwertes liegt, und daß die Zweigleitung (L6) mittels eines Ventils (PDBV) geschlossen wird, sobald die IST-Drehzahl der Pumpe (P) oberhalb des Drehzahl-Grenzwertes liegt.
- Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Drehzahl-Grenzwert der Mindestdrehzahl der Pumpe (P) entspricht.
- Hydraulische Hubvorrichtung insbesondere zur Durchführung des Verfahrens nach einem der Ansprüche 1 bis 4, mit einer von einem Elektromotor (M) antreibbaren Pumpe (P) mittels der im Lasthebebetrieb zumindest einem hydraulischen Hubzylinder (12) Hydrauliköl aus einem Vorratsbehälter (11) über eine Zuführleitung (L1) zuführbar ist, wobei das Hydrauliköl im Lastsenkbetrieb von dem Hubzylinder (12) über eine Rückströmleitung (L2,L3,L1.2,L6) unter Durchströmen der den als Generator arbeitenden Elektromotor (M) antreibenden Pumpe (P) in den Vorratsbehälter (11) zurückführbar ist, dadurch gekennzeichnet, daß ein erster Druckaufnehmer (DA1) vorgesehen ist, der den im Hubzylinder (12) herrschenden hydraulischen Druck erfaßt, daß in der Rückströmleitung stromauf der Pumpe (P) ein proportionales Druckregelventil (PDRV) angeordnet ist, daß ein zweiter Druckaufnehmer (DA2) vorgesehen ist, der den eingangsseitigen Druck der Pumpe (P) erfaßt, daß eine Steuervorrichtung vorgesehen ist, mittels der der eingangsseitige Druck der Pumpe durch Ansteuerung des Druckregelventils (PDRV) in Abhängigkeit von den von den Druckaufnehmern (DA1,DA2) gemessenen Druckwerten an den im Hubzylinder (12) herrschenden hydraulischen Druck angleichbar ist, und daß stromab der Pumpe (P) in der Rückströmleitung ein proportionales Druckbegrenzungsventil (PDBV) angeordnet ist.
- Hydraulische Hubvorrichtung insbesondere zur Durchführung des Verfahrens nach einem der Ansprüche 1 bis 4, mit einer von einem Elektromotor (M) antreibbaren Pumpe (P) mittels der im Lasthebebetrieb zumindest einem hydraulischen Hubzylinder (12) Hydrauliköl aus einem Vorratsbehälter (11) über eine Zuführleitung (L1) zuführbar ist, wobei das Hydrauliköl im Lastsenkbetrieb von dem Hubzylinder (12) über eine Rückströmleitung (L2,L3,L1.2,L6) unter Durchströmen der den als Generator arbeitenden Elektromotor (M) antreibenden Pumpe (P) in den Vorratsbehälter (11) zurückführbar ist, dadurch gekennzeichnet, daß ein erster Druckaufnehmer (DA1) vorgesehen ist, der den im Hubzylinder (12) herrschenden hydraulischen Druck erfaßt, daß ein zweiter Druckaufnehmer (DA2) vorgesehen ist, der den eingangsseitigen Druck der Pumpe (P) erfaßt, daß in der Rückströmleitung stromauf der Pumpe (P) eine Düse (D1) angeordnet ist, mittels der der eingangsseitige Druck der Pumpe an den im Hubzylinder (12) herrschenden hydraulischen Druck angleichbar ist, und daß stromab der Pumpe (P) in der Rückströmleitung ein proportionales Druckbegrenzungsventil (PDBV) angeordnet ist.
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 |
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EP1308415A2 true EP1308415A2 (de) | 2003-05-07 |
EP1308415A3 EP1308415A3 (de) | 2005-05-25 |
EP1308415B1 EP1308415B1 (de) | 2007-02-07 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP20020024330 Expired - Fee Related EP1308415B1 (de) | 2001-11-06 | 2002-11-02 | Hydraulische Hubvorrichtung insbesondere für batteriegetriebene Flurförderzeuge und Verfahren zu deren Steuerung |
Country Status (2)
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EP (1) | EP1308415B1 (de) |
DE (2) | DE10154449A1 (de) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1369377A3 (de) * | 2002-06-05 | 2006-07-05 | BT Industries | Verfahren zur Steuerung eines Hubwagens |
WO2011060844A1 (de) * | 2009-11-17 | 2011-05-26 | Robert Bosch Gmbh | Hydraulikantrieb mit energierückgewinnung |
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 (de) * | 2010-05-20 | 2012-10-10 | Doosan Industrial Vehicle Co., Ltd. | Energiegewinnungssystem für einen elektrisch angetriebenen gabelstapler |
EP2660184A1 (de) * | 2010-12-28 | 2013-11-06 | Sunward Intelligent Equipment Co., Ltd. | Stromerzeugungssystem mit energierückgewinnung für fahrzeuge zum laden, entladen und transportieren |
EP3165496A1 (de) * | 2015-11-05 | 2017-05-10 | Kabushiki Kaisha Toyota Jidoshokki | Industriefahrzeug |
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 |
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 |
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*** |
WO2022193769A1 (zh) * | 2021-03-19 | 2022-09-22 | 湖南星邦智能装备股份有限公司 | 双作用浮动油缸控制回路 |
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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 |
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EP1193211A2 (de) * | 2000-09-28 | 2002-04-03 | STILL WAGNER GmbH & Co KG | Hydraulische Hubvorrichtung |
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- 2002-11-02 DE DE50209428T patent/DE50209428D1/de not_active Expired - Lifetime
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DE4416173A1 (de) * | 1994-05-06 | 1995-11-09 | Jungheinrich Ag | Hydraulische Hubvorrichtung für batteriebetriebene Flurförderzeuge oder dergleichen |
EP0908413A2 (de) * | 1997-10-08 | 1999-04-14 | Still Wagner GmbH & Co. KG | Fluförderzeug mit einer Lastaufnahmevorrichtung und Verfahren zum Absenken der Lastaufnahmevorrichtung |
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Cited By (18)
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EP1369377A3 (de) * | 2002-06-05 | 2006-07-05 | BT Industries | Verfahren zur Steuerung eines Hubwagens |
WO2011060844A1 (de) * | 2009-11-17 | 2011-05-26 | Robert Bosch Gmbh | Hydraulikantrieb mit energierückgewinnung |
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 (de) * | 2010-05-20 | 2014-09-10 | Doosan Corp | Energiegewinnungssystem für einen elektrisch angetriebenen gabelstapler |
EP2508464A2 (de) * | 2010-05-20 | 2012-10-10 | Doosan Industrial Vehicle Co., Ltd. | Energiegewinnungssystem für einen elektrisch angetriebenen gabelstapler |
US9079755B2 (en) | 2010-05-20 | 2015-07-14 | Doosan Corporation | Energy reclaiming system for electric forklift truck |
EP2660184A1 (de) * | 2010-12-28 | 2013-11-06 | Sunward Intelligent Equipment Co., Ltd. | Stromerzeugungssystem mit energierückgewinnung für fahrzeuge zum laden, entladen und transportieren |
EP2660184A4 (de) * | 2010-12-28 | 2014-09-17 | Sunward Intelligent Equipment | Stromerzeugungssystem mit energierückgewinnung für fahrzeuge zum laden, entladen und transportieren |
US9422949B2 (en) | 2010-12-28 | 2016-08-23 | Sunward Intelligent Equipment Co., Ltd. | Energy-recovery generation system for handling and carrying electric vehicle |
EP3165496A1 (de) * | 2015-11-05 | 2017-05-10 | Kabushiki Kaisha Toyota Jidoshokki | Industriefahrzeug |
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 |
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 |
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*** |
WO2022193769A1 (zh) * | 2021-03-19 | 2022-09-22 | 湖南星邦智能装备股份有限公司 | 双作用浮动油缸控制回路 |
Also Published As
Publication number | Publication date |
---|---|
EP1308415B1 (de) | 2007-02-07 |
DE50209428D1 (de) | 2007-03-22 |
EP1308415A3 (de) | 2005-05-25 |
DE10154449A1 (de) | 2003-05-15 |
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