EP1528035A2 - Dispositif de levage pour un chariot élévateur pour rayonnages hauts - Google Patents

Dispositif de levage pour un chariot élévateur pour rayonnages hauts Download PDF

Info

Publication number: EP1528035A2
Authority: EP; European Patent Office
Prior art keywords: lifting; hoist; mast; hydraulic; lifting cylinders
Prior art date: 2003-10-22
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

EP04023711A

Other languages

German (de)

English (en)

Other versions

EP1528035B1 (fr

EP1528035A3 (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.)

2003-10-22

Filing date

2004-10-05

Publication date

2005-05-04

2004-10-05 Application filed by Still Wagner GmbH and Co KG filed Critical Still Wagner GmbH and Co KG

2005-05-04 Publication of EP1528035A2 publication Critical patent/EP1528035A2/fr

2006-09-13 Publication of EP1528035A3 publication Critical patent/EP1528035A3/fr

2008-02-27 Application granted granted Critical

2008-02-27 Publication of EP1528035B1 publication Critical patent/EP1528035B1/fr

2024-10-05 Anticipated expiration legal-status Critical

Status 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
- 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)

EP04023711A 2003-10-22 2004-10-05 Dispositif de levage pour un chariot élévateur pour rayonnages hauts Expired - Lifetime EP1528035B1 (fr)

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 (fr)	2005-05-04
EP1528035A3 EP1528035A3 (fr)	2006-09-13
EP1528035B1 EP1528035B1 (fr)	2008-02-27

Family

ID=34399542

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP04023711A Expired - Lifetime EP1528035B1 (fr)	2003-10-22	2004-10-05	Dispositif de levage pour un chariot élévateur pour rayonnages hauts

Country Status (3)

Country	Link
EP (1)	EP1528035B1 (fr)
AT (1)	ATE387403T1 (fr)
DE (2)	DE10349123A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE102005050733A1 (de) *	2005-10-22	2007-04-26	Jungheinrich Ag	Hubmast für Stapler
EP2465812A1 (fr)	2010-12-16	2012-06-20	BT Products AB	Camion industriel comportant un mât extensible
EP2881358A1 (fr) *	2013-12-04	2015-06-10	KION Warehouse Systems GmbH	Chariot de manutention

Families Citing this family (6)

* Cited by examiner, † Cited by third party
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

Family Cites Families (10)

* Cited by examiner, † Cited by third party
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
DE2741497C2 (de) *	1977-09-15	1981-09-17	Jungheinrich Unternehmensverwaltung Kg, 2000 Hamburg	Hydraulikanlage für den Hubantrieb eines Hubladers
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
DE19641192C2 (de) *	1996-09-24	2002-10-31	Siemens Ag	Handhabungsgerät, insbesondere Regalbediengerät
DE10006461A1 (de) *	2000-02-14	2001-08-16	Still Gmbh	Hubvorrichtung für ein Flurförderzeug
DE10054789A1 (de) *	2000-11-04	2002-05-08	Still Wagner Gmbh & Co Kg	Flurförderzeug mit einem Hubgerüst und einer zusätzlichen Bewegungsvorrichtung für ein Lastaufnahmemittel
DE10054791A1 (de) *	2000-11-04	2002-05-08	Still Wagner Gmbh & Co Kg	Lasthandhabungsvorrichtung für ein Flurförderzeug
DE10125351A1 (de) *	2001-05-23	2002-11-28	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 AT AT04023711T patent/ATE387403T1/de not_active IP Right Cessation
- 2004-10-05 DE DE502004006306T patent/DE502004006306D1/de not_active Expired - Lifetime
- 2004-10-05 EP EP04023711A patent/EP1528035B1/fr not_active Expired - Lifetime

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE102005050733A1 (de) *	2005-10-22	2007-04-26	Jungheinrich Ag	Hubmast für Stapler
EP1780171A2 (fr)	2005-10-22	2007-05-02	Jungheinrich Aktiengesellschaft	Mât élevateur pour chariot élevateur à fourche
EP1780171A3 (fr) *	2005-10-22	2007-06-06	Jungheinrich Aktiengesellschaft	Chariot élévateur avec agencement de jambe de support
CN1994855B (zh) *	2005-10-22	2013-11-13	容海因里希股份公司	叉车的升降杆
EP2465812A1 (fr)	2010-12-16	2012-06-20	BT Products AB	Camion industriel comportant un mât extensible
EP2881358A1 (fr) *	2013-12-04	2015-06-10	KION Warehouse Systems GmbH	Chariot de manutention

Also Published As

Publication number	Publication date
EP1528035B1 (fr)	2008-02-27
DE502004006306D1 (de)	2008-04-10
ATE387403T1 (de)	2008-03-15
DE10349123A1 (de)	2005-05-19
EP1528035A3 (fr)	2006-09-13

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