EP1528035A2 - Hubwerk, insbesondere für einen Hochregalstapler - Google Patents
Hubwerk, insbesondere für einen Hochregalstapler Download PDFInfo
- Publication number
- EP1528035A2 EP1528035A2 EP04023711A EP04023711A EP1528035A2 EP 1528035 A2 EP1528035 A2 EP 1528035A2 EP 04023711 A EP04023711 A EP 04023711A EP 04023711 A EP04023711 A EP 04023711A EP 1528035 A2 EP1528035 A2 EP 1528035A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- hoist
- lifting
- mast
- hydraulic
- 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
Links
Images
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
-
- 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
- B66F9/08—Masts; Guides; Chains
Definitions
- the invention relates to a hoist for an industrial truck, in particular for a truck High platform forklift, with a stand mast, at least one extension mast and at least two hydraulic Hubzylindem, wherein the extension mast by means of Lifting force of the lifting cylinder relative to the stationary mast is extendable and the two Lifting cylinder parallel to each other on the left and on the right side of the hoist are arranged.
- Generic hoists are used in many types of industrial trucks, for example in counterbalanced forklifts, reach trucks, High-level picking or high-bay stackers used.
- one Load-carrying device - for high-level order pickers and high-bay stackers Car together with the load handling device - in vertical direction slidably guided on the extension mast.
- the extension mast in turn is in vertical Direction slidably guided on the stationary mast.
- two are hydraulic Hub cylinder provided on the one hand to the stationary mast and on the other hand on the Extension mast are attached.
- the Load-bearing device by means of chains together with the extension mast means the force of the lifting cylinder can be raised.
- a lateral Mast deflection or lateral swing occur.
- a side Mast deflection occurs especially in high platform stackers when a load in lateral direction is pushed, for example, in a shelf. By doing this occurring eccentric introduction of the weight of the load bends the hoist to the side.
- a lateral swinging of the hoist can when driving with lifted load over an uneven road surface. When the truck is in narrow aisles is moved, there is a risk that by a lateral tilt or swing the load-carrying device or the lifted car with a shelf located on the side of the truck comes into contact.
- the invention is therefore based on the object, a hoist available in which a lateral mast deflection and / or a lateral swinging the hoist is at least partially prevented.
- This object is achieved in that the two lifting cylinders with different hydraulic pressure can be acted upon.
- different Hydraulic pressures in the two lifting cylinders can be a counter-torque on the hoist be exercised, which counteracts a lateral mast deflection.
- one Lateral vibration of the hoist can be achieved by generating a periodic Gegenmoments be counteracted.
- the lifting cylinders are designed such that with one of the two lifting cylinders the lifting force required for the operation of the hoist can be generated.
- a lifting The maximum load of the hoist can also exclusively by the on right or arranged on the left side of the hoist lift cylinder done.
- one of the two lifting cylinders is at least approximately depressurized, while the other lifting cylinder is pressurized and carries the entire load weight.
- the maximum possible with the inventive arrangement Counter moment applied to the hoist.
- the at least one signal generator for detecting an off-center load position and / or a lateral mast tilt and / or a lateral mast vibration intended.
- the at least one signal generator is with a control of Truck connected to the pressure in the lifting cylinders of the hoist controls accordingly to a lateral mast deflection or lateral Compensate mast oscillation.
- An eccentric load position for example be detected by a position sensor of a side thruster.
- To measure the pole tilt can be used an angle sensor.
- a side Mast vibration for example, by means of a mast attached Acceleration sensor can be determined.
- a particularly simple embodiment of the invention is present if, depending on the output signal of the signal generator, the hydraulic pressure in a lifting cylinder is degradable.
- the pressure in the load-facing lifting cylinder can thereby be reduced for example by opening a valve, right up to Depressurising the load-facing lifting cylinder. Since the load weight then increasingly supported on the load-facing lifting cylinder increases in this automatically the hydraulic pressure.
- a lateral swing of the hoist can be influenced if a means for dynamically changing the hydraulic pressure in at least one of the lift cylinders is provided. By alternately increasing and decreasing the pressure in the Hubzylindem can actively counteract a lateral swing of the hoist become.
- the means for dynamically changing the hydraulic pressure in at least one of the lift cylinders formed by a hydraulic pump whose pressure side and suction side alternately with the right or the left lifting cylinder are connectable can be a Hydraulic pump whose pressure and suction sides are mutually interchangeable, be arranged between the two lifting cylinders. For example, by the Direction of rotation of the pump drive can then be defined, which of the Lifting cylinder with the pressure side and which the lifting cylinder with the suction side of Pump is connected.
- the invention is used in industrial trucks, in which the Hub has a load-carrying means with a side thruster.
- a Side thrust device can be the center of gravity of a picked load of the Truck can be moved away, resulting in a lateral bending of the Hoist can lead.
- This effect is particularly pronounced when the load handling device with Side thruster is formed by a pivoting thrust fork, since the load with a swing thrust fork even beyond the wheel base of the truck to the Page can be moved.
- Figure 1 shows an inventive hoist 1 with a on a vehicle frame fixed stand mast 3 and one on the mast 3 by means of rollers slidably guided Ausfahrmast 4.
- an additional Vertical guide 5 is provided to a lateral tilting of the Ausfahrmasts 4 relative to the Stand mast 3 exclude, is in the middle of the hoist 1 .
- a designed as a swivel push fork Load-receiving means 2 is displaceable in the vertical direction on the Ausfahrmast. 4 guided.
- the lifting of a lifting device 2 and the outrigger 4 required force is generated by means of two hydraulic lifting cylinders 6, 7, of each one arranged on the left and the right side of the hoist 1 is.
- the lifting cylinders 6, 7 are hydraulic lines 8 with hydraulic oil provided.
- FIG 2 is a hydraulic arrangement for supplying the hydraulic Lifting cylinder 6, 7 shown.
- the lifting cylinders each have a cylinder tube 6a or 7a, a piston 6b and 7b and one in the cylinder tube 6a and 7a, below the Piston 6b and 7b arranged pressure chamber 6c and 7c.
- the hydraulic system has a hydraulic pump 15, the hydraulic oil from a Tank 16 sucks and is driven by an electric motor 17.
- a Pump delivery line 18 branches over two check valves 19, 20, the can be opened electromagnetically, to the pressure chambers 6c, 7c of the Lifting cylinder 6, 7.
- a hydraulic pump 21 is provided, the pressure and Suction side as a function of the direction of rotation of the hydraulic pump 21st driving electric motor 22 are interchangeable. The two outputs of this Hydraulic pump 21 are also connected to the pressure chambers 6c, 7c.
- the mode of operation is the following: To lift the lifting device drives the Electric motor 17, the hydraulic pump 15 at. This sucks hydraulic oil from the tank 16 and promotes this through the delivery line 18 and the check valves 19, 20 to the pressure chambers 6c, 7c. To lower the lifting device, the Check valves 19, 20 are electromagnetically open, so that the hydraulic oil from the Pressure chambers 6c, 7c by the hydraulic pump 15, the case as a hydraulic motor is operated, flows into the tank 16.
- the electric motor 17 as a generator operated and used for the recovery of Hub energie.
- When lifted load receiving means can by means of the hydraulic pump 21 of the Hydraulic pressure in the two pressure chambers 6c, 7c are varied, for example to a lateral deflection or lateral vibration of the hoist to compensate.
- the hydraulic pressure in the pressure chamber 6c or 7c With the pressure side of the Hydraulic pump 21 is connected, while in the other pressure chamber 7c or 6c, the connected to the suction side, the hydraulic pressure is reduced.
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Forklifts And Lifting Vehicles (AREA)
Abstract
Description
- Figur 1
- ein erfindungsgemäßes Hubwerk,
- Figur 2
- eine hydraulische Anordnung zur Versorgung der hydraulischen Hubzylinder.
Claims (8)
- Hubwerk für ein Flurförderzeug, insbesondere für einen Hochregalstapler, mit einem Standmast (3), mindestens einem Ausfahrmast (4) und mindestens zwei hydraulischen Hubzylindern (6, 7), wobei der Ausfahrmast (4) mittels der Hubkraft der Hubzylinder (6, 7) relativ zu dem Standmast (3) ausfahrbar ist und die beiden Hubzylinder (6, 7) parallel zueinander auf der linken und auf der rechten Seite des Hubwerks (1) angeordnet sind, dadurch gekennzeichnet, dass die beiden Hubzylinder (6, 7) mit unterschiedlichem Hydraulikdruck beaufschlagbar sind.
- Hubwerk nach Anspruch 1, dadurch gekennzeichnet, dass die Hubzylinder (6, 7) derart ausgelegt sind, dass mit einem der beiden Hubzylinder (6 oder 7) die für den Betrieb des Hubwerks (1) erforderliche Hubkraft erzeugbar ist.
- Hubwerk nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass mindestens ein Signalgeber zum Erfassen einer außermittigen Lastposition und/oder einer seitlichen Mastneigung und/oder einer seitlichen Mastschwingung vorgesehen ist.
- Hubwerk nach Anspruch 3, dadurch gekennzeichnet, dass in Abhängigkeit von dem Ausgangssignal des Signalgebers der Hydraulikdruck in einem Hubzylinder (6 oder 7) herabsetzbar ist.
- Hubwerk nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass ein Mittel zum dynamischen Verändern des Hydraulikdrucks in mindestens einem der Hubzylinder (6, 7) vorgesehen ist.
- Hubwerk nach Anspruch 5, dadurch gekennzeichnet, dass das Mittel zum dynamischen Verändern des Hydraulikdrucks in mindestens einem der Hubzylinder (6, 7) von einer Hydraulikpumpe (21) gebildet ist, deren Druckseite und Saugseite wechselweise mit dem rechten oder dem linken Hubzylinder (6 oder 7) verbindbar sind.
- Hubwerk nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass das Hubwerk (1) ein Lastaufnahmemittel (2) mit einer Seitenschubvorrichtung aufweist.
- Hubwerk nach Anspruch 7, dadurch gekennzeichnet, dass das Lastaufnahmemittel (2) mit Seitenschubvorrichtung von einer Schwenkschubgabel gebildet ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10349123 | 2003-10-22 | ||
DE10349123A DE10349123A1 (de) | 2003-10-22 | 2003-10-22 | Hubwerk, insbesondere für einen Hochregalstapler |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1528035A2 true EP1528035A2 (de) | 2005-05-04 |
EP1528035A3 EP1528035A3 (de) | 2006-09-13 |
EP1528035B1 EP1528035B1 (de) | 2008-02-27 |
Family
ID=34399542
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04023711A Not-in-force EP1528035B1 (de) | 2003-10-22 | 2004-10-05 | Hubwerk, insbesondere für einen Hochregalstapler |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1528035B1 (de) |
AT (1) | ATE387403T1 (de) |
DE (2) | DE10349123A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005050733A1 (de) * | 2005-10-22 | 2007-04-26 | Jungheinrich Ag | Hubmast für Stapler |
EP2465812A1 (de) | 2010-12-16 | 2012-06-20 | BT Products AB | Industriefahrzeug mit ausziehbarem Mast |
EP2881358A1 (de) * | 2013-12-04 | 2015-06-10 | KION Warehouse Systems GmbH | Flurförderzeug |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007015488A1 (de) | 2007-03-30 | 2008-10-02 | Still Wagner Gmbh | Schwingungskompensation am Hubgerüst eines Flurförderzeugs |
DE102007042878A1 (de) | 2007-09-08 | 2009-03-12 | Jungheinrich Aktiengesellschaft | Hochhubflurförderzeug |
DE102008020593B4 (de) | 2008-04-24 | 2022-02-10 | Linde Material Handling Gmbh | Verfahren zur Schwingungsdämpfung bei Flurförderzeugen |
DE102008020595B4 (de) | 2008-04-24 | 2022-02-10 | Linde Material Handling Gmbh | Verfahren zur Schwingungsdämpfung bei Flurförderzeugen |
DE102008020592B4 (de) | 2008-04-24 | 2022-02-10 | Linde Material Handling Gmbh | Verfahren zur Schwingungsdämpfung bei Flurförderzeugen |
DE102016111109A1 (de) * | 2016-06-17 | 2017-12-21 | Jungheinrich Ag | Verfahren zum Betrieb einer hydraulischen Dämpfungsvorrichtung für einen Hubmast eines Flurförderzeugs |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2456320A (en) * | 1947-02-24 | 1948-12-14 | Ross Carrier Company | Lift truck |
US4023650A (en) * | 1975-08-20 | 1977-05-17 | Eaton Corporation | Hydraulic systems for two speed lifting |
GB2004248A (en) * | 1977-09-15 | 1979-03-28 | Jungheinrich Kg | Hydraulic hoisting frame apparatus for floor conveying vehicles or shelf conveyors |
US4957408A (en) * | 1988-04-06 | 1990-09-18 | Toyota Jidosha Kabushiki Kaisha | Device for controlling a fork of a forklift |
DE3937404A1 (de) * | 1989-11-10 | 1991-05-16 | Jungheinrich Kg | Stapelfahrzeug mit einem beweglich an ihm angeordneten hubgeruest |
DE19641192A1 (de) * | 1996-09-24 | 1998-03-26 | Mannesmann Ag | Handhabungsgerät, insbesondere Regalbediengerät |
DE10006461A1 (de) * | 2000-02-14 | 2001-08-16 | Still Gmbh | Hubvorrichtung für ein Flurförderzeug |
EP1203745A1 (de) * | 2000-11-04 | 2002-05-08 | STILL WAGNER GmbH & Co KG | Flurförderzeug mit einem Hubgerüst und einer zusätzlichen Bewegungsvorrichtung für ein Lastaufnahmemittel |
EP1203744A1 (de) * | 2000-11-04 | 2002-05-08 | STILL WAGNER GmbH & Co KG | Lasthandhabungsvorrichtung für ein Flurförderzeug |
EP1260478A2 (de) * | 2001-05-23 | 2002-11-27 | Still Gmbh | Hydraulische Anordnung für die Hubzylinder eines Flurförderzeugs |
-
2003
- 2003-10-22 DE DE10349123A patent/DE10349123A1/de not_active Withdrawn
-
2004
- 2004-10-05 DE DE502004006306T patent/DE502004006306D1/de active Active
- 2004-10-05 EP EP04023711A patent/EP1528035B1/de not_active Not-in-force
- 2004-10-05 AT AT04023711T patent/ATE387403T1/de not_active IP Right Cessation
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2456320A (en) * | 1947-02-24 | 1948-12-14 | Ross Carrier Company | Lift truck |
US4023650A (en) * | 1975-08-20 | 1977-05-17 | Eaton Corporation | Hydraulic systems for two speed lifting |
GB2004248A (en) * | 1977-09-15 | 1979-03-28 | Jungheinrich Kg | Hydraulic hoisting frame apparatus for floor conveying vehicles or shelf conveyors |
US4957408A (en) * | 1988-04-06 | 1990-09-18 | Toyota Jidosha Kabushiki Kaisha | Device for controlling a fork of a forklift |
DE3937404A1 (de) * | 1989-11-10 | 1991-05-16 | Jungheinrich Kg | Stapelfahrzeug mit einem beweglich an ihm angeordneten hubgeruest |
DE19641192A1 (de) * | 1996-09-24 | 1998-03-26 | Mannesmann Ag | Handhabungsgerät, insbesondere Regalbediengerät |
DE10006461A1 (de) * | 2000-02-14 | 2001-08-16 | Still Gmbh | Hubvorrichtung für ein Flurförderzeug |
EP1203745A1 (de) * | 2000-11-04 | 2002-05-08 | STILL WAGNER GmbH & Co KG | Flurförderzeug mit einem Hubgerüst und einer zusätzlichen Bewegungsvorrichtung für ein Lastaufnahmemittel |
EP1203744A1 (de) * | 2000-11-04 | 2002-05-08 | STILL WAGNER GmbH & Co KG | Lasthandhabungsvorrichtung für ein Flurförderzeug |
EP1260478A2 (de) * | 2001-05-23 | 2002-11-27 | Still Gmbh | Hydraulische Anordnung für die Hubzylinder eines Flurförderzeugs |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005050733A1 (de) * | 2005-10-22 | 2007-04-26 | Jungheinrich Ag | Hubmast für Stapler |
EP1780171A2 (de) | 2005-10-22 | 2007-05-02 | Jungheinrich Aktiengesellschaft | Hubmast für Stapler |
EP1780171A3 (de) * | 2005-10-22 | 2007-06-06 | Jungheinrich Aktiengesellschaft | Hubmast für Stapler |
CN1994855B (zh) * | 2005-10-22 | 2013-11-13 | 容海因里希股份公司 | 叉车的升降杆 |
EP2465812A1 (de) | 2010-12-16 | 2012-06-20 | BT Products AB | Industriefahrzeug mit ausziehbarem Mast |
EP2881358A1 (de) * | 2013-12-04 | 2015-06-10 | KION Warehouse Systems GmbH | Flurförderzeug |
Also Published As
Publication number | Publication date |
---|---|
EP1528035A3 (de) | 2006-09-13 |
DE502004006306D1 (de) | 2008-04-10 |
EP1528035B1 (de) | 2008-02-27 |
ATE387403T1 (de) | 2008-03-15 |
DE10349123A1 (de) | 2005-05-19 |
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