EP0814051B1 - Méthode de fonctionnement d'un élévateur de fourche et élévateur pour la mise en oeuvre de cette méthode - Google Patents

Méthode de fonctionnement d'un élévateur de fourche et élévateur pour la mise en oeuvre de cette méthode Download PDF

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Publication number
EP0814051B1
EP0814051B1 EP97109318A EP97109318A EP0814051B1 EP 0814051 B1 EP0814051 B1 EP 0814051B1 EP 97109318 A EP97109318 A EP 97109318A EP 97109318 A EP97109318 A EP 97109318A EP 0814051 B1 EP0814051 B1 EP 0814051B1
Authority
EP
European Patent Office
Prior art keywords
industrial truck
axle
brakeable
control unit
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.)
Expired - Lifetime
Application number
EP97109318A
Other languages
German (de)
English (en)
Other versions
EP0814051A1 (fr
Inventor
Manfred Dipl.-Ing. Baumann
Hans-Jörg Dipl.-Ing. Schiebel
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 EP0814051A1 publication Critical patent/EP0814051A1/fr
Application granted granted Critical
Publication of EP0814051B1 publication Critical patent/EP0814051B1/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
    • B66F17/00—Safety devices, e.g. for limiting or indicating lifting force
    • B66F17/003—Safety devices, e.g. for limiting or indicating lifting force for fork-lift trucks
    • 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
    • B66F9/24—Electrical devices or systems

Definitions

  • the invention relates to a method for operating an industrial truck at least one brakeable axle and at least one non-brakeable axle, and a control unit for a drive of the industrial truck, the Control unit a variable, the permissible maximum speed of the Truck generating control signal generated.
  • the invention also relates to a Industrial truck provided with at least one for carrying out the method brakeable axle and at least one non-brakeable axle and one Control unit for generating a variable, the permissible Maximum speed of the control signal defining the truck.
  • the present invention has for its object a method for operating of an industrial truck and an industrial truck for carrying out the method for To provide what the influence of the current direction of travel at Determination of the permissible driving speed is taken into account.
  • This object is achieved with respect to the method in that the control signal by means of the control unit as a function of the direction of travel of the Truck is changed so that when driving in the direction of the braked Axis a higher maximum speed is permitted than when traveling in the direction the unstoppable axle.
  • the maximum achievable braking acceleration is usually for industrial trucks reached when the arranged on the braked wheels wheels due to applied brakes at least approximately sliding over the surface of the road move.
  • the braking acceleration is directly proportional to that via the wheels normal force acting on the road surface of the braked axle.
  • control signal in Dependence on the mass of one with a load suspension device load is changed.
  • the mass of the load taken up represents one another important variable that is used in determining the maximum Driving speed must be taken into account. It also changes through the Load the center of gravity of the entire industrial truck. Depends on the mass of the load on the one hand the achievable braking effect, on the other hand also the driving stability of the Truck.
  • control signal is dependent on the position a load lifting device that can be moved up and down on a lifting device is changed.
  • the difference in braking effect described above Forward and backward travel increases with increasing center of gravity of the Industrial truck and thus when lifting the load suspension device with or without load.
  • a particularly advantageous development of the invention is that Control signal depending on the between the wheels of the braked Axis and the road surface prevailing coefficient of friction is influenced. If the currently existing coefficient of friction in the calculation of the permissible Up to now, maximum speed is also possible with regard to this aspect Existing safety reserves are exhausted and the speed limit values as high as possible.
  • the expected coefficient of friction can be the Control unit taking into account the condition of the road by hand be specified. It is also possible to analyze the coefficient of friction to determine empirically from previous braking.
  • the object set is achieved in that the control unit with the current direction of travel of the industrial truck reproducing signal transmitter is so operatively connected that when driving in the direction the braked axle has a higher maximum speed than that of Travel in the direction of the non-brakeable axis.
  • the figure shows an industrial truck according to the invention High rack order picker.
  • a drive part 1 there are, for example, drive units and batteries for the drive of the industrial truck.
  • the truck has a brake Drive axle 2 and two non-brakeable axles 3.
  • a lifting device 4 is arranged, on which a driver's station 5 with a load suspension device 6 is fastened up and down.
  • the Load suspension device can be moved vertically with an initial lifting frame 7 the driver's cab 5 attached.
  • the position of the center of gravity S m of the industrial truck including the load changes continuously during the operation of the industrial truck and is particularly dependent on the position of the load handler on the mast and the mass of the load taken up by the load handler.
  • the center of gravity S m shown in the figure is reached during operation of the industrial truck with a raised load.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Transportation (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Civil Engineering (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Vehicle Body Suspensions (AREA)

Claims (8)

  1. Procédé de commande d'un chariot de manutention comprenant au moins un essieu freinable (2) et au moins un essieu non freinable (3), ainsi qu'une unité de commande pour un entraínement de conduite du chariot de manutention, l'unité de commande générant un signal de commande modifiable, établissant la vitesse maximale admissible du chariot de manutention, caractérisé en ce que le signal de commande est modifié de telle sorte au moyen de l'unité de commande en fonction de la direction de conduite du chariot de manutention que, lors de la conduite dans la direction de l'essieu freinable (2), une vitesse maximale plus élevée est autorisée que dans le cas de la conduite dans la direction de l'essieu non freinable (3).
  2. Procédé de commande d'un chariot de manutention selon la revendication 1, caractérisé en ce que le signal de commande est modifié en fonction de la masse d'une charge supportée par un dispositif de support de charge (6).
  3. Procédé de commande d'un chariot de manutention selon la revendication 1 ou 2, caractérisé en ce que le signal de commande est modifié en fonction de la position d'un dispositif de support de charge (6) déplaçable de haut en bas sur un dispositif de levage (4) .
  4. Procédé de commande d'un chariot de manutention selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le signal de commande est influencé en fonction du coefficient de frottement (µ) entre les roués mobiles de l'essieu freinable (2) et la surface de la trajectoire de conduite (8).
  5. Chariot de manutention comprenant au moins un essieu freinable (2) et au moins un essieu non freinable (3) et une unité de commande pour générer un signal de commande modifiable, établissant la vitesse maximale admissible du chariot de manutention, caractérisé en ce que l'unité de commande est en liaison coopérante avec un transducteur restituant la direction de conduite instantanée du chariot de manutention, de telle sorte qu'en cas de conduite dans la direction de l'essieu freinable (2), une vitesse maximale plus élevée soit autorisée que dans le cas d'une conduite, dans la direction de l'essieu non freinable (3).
  6. Chariot de manutention selon la revendication 5, caractérisé en ce que l'unité de commande est en liaison coopérante avec un transducteur restituant la masse d'une charge supportée par un dispositif de support de charge (6).
  7. Chariot de manutention selon la revendication 5 ou 6, caractérisé en ce que l'unité de commande est en liaison coopérante avec un transducteur restituant la position d'un dispositif de support de charge (6) déplaçable de haut en bas sur un dispositif de levage (4).
  8. Chariot de manutention selon l'une quelconque des revendications 5 à 7, caractérisé en ce que l'unité de commande est en liaison coopérante avec un transducteur restituant le coefficient de frottement (µ) entre les roues mobiles de l'essieu freinable (2) et la surface de la trajectoire de conduite (8).
EP97109318A 1996-06-18 1997-06-09 Méthode de fonctionnement d'un élévateur de fourche et élévateur pour la mise en oeuvre de cette méthode Expired - Lifetime EP0814051B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19624308A DE19624308A1 (de) 1996-06-18 1996-06-18 Verfahren zum Betreiben eines Flurförderzeugs und Flurförderzeug zur Durchführung des Verfahrens
DE19624308 1996-06-18

Publications (2)

Publication Number Publication Date
EP0814051A1 EP0814051A1 (fr) 1997-12-29
EP0814051B1 true EP0814051B1 (fr) 2001-12-05

Family

ID=7797276

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97109318A Expired - Lifetime EP0814051B1 (fr) 1996-06-18 1997-06-09 Méthode de fonctionnement d'un élévateur de fourche et élévateur pour la mise en oeuvre de cette méthode

Country Status (2)

Country Link
EP (1) EP0814051B1 (fr)
DE (2) DE19624308A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10315297A1 (de) * 2003-04-04 2004-10-28 Jungheinrich Ag Bremssystem für ein batteriebetriebenes Flurförderzeug
DE202008005966U1 (de) 2007-12-14 2009-04-16 Jungheinrich Aktiengesellschaft Flurförderzeug mit Abstandssensor zur Radaufstandskraftermittlung
DE102007060433A1 (de) 2007-12-14 2009-06-18 Jungheinrich Aktiengesellschaft Verfahren zum Betrieb eines Flurförderzeugs
DE102014202230A1 (de) 2014-02-07 2015-08-13 Robert Bosch Gmbh Verfahren und Vorrichtung zum Verhindern eines Kippens eines lenkbaren Fahrzeugs

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10054789A1 (de) * 2000-11-04 2002-05-08 Still Wagner Gmbh & Co Kg Flurförderzeug mit einem Hubgerüst und einer zusätzlichen Bewegungsvorrichtung für ein Lastaufnahmemittel
DE10226599A1 (de) * 2002-06-14 2003-12-24 Still Wagner Gmbh & Co Kg Verfahren zum Steuern mindestens einer Bewegung eines Flurförderzeugs
DE10226598A1 (de) * 2002-06-14 2003-12-24 Still Wagner Gmbh & Co Kg Flurförderzeug mit einer Steuervorrichtung
DE10242112A1 (de) * 2002-09-11 2004-04-01 Robert Bosch Gmbh Verfahren und Vorrichtung zur Überwachung der Geschwindigkeit eines Fahrzeugs aufgrund bauartbedingten und betriebsbedingten Voraussetzungen
JP4186082B2 (ja) * 2006-05-01 2008-11-26 村田機械株式会社 走行台車
DE102015201671A1 (de) 2015-01-30 2016-08-04 Jungheinrich Aktiengesellschaft Kenngrößenbestimmung für Flurförderzeuge

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2049048C2 (de) * 1970-10-06 1983-03-31 Linde Ag, 6200 Wiesbaden Steuervorrichtung für ein stufenlos verstellbares Getriebe für den Antrieb einer Treibachse eines Fahrzeuges
DE2208097C2 (de) * 1971-03-03 1984-05-24 Linde Ag, 6200 Wiesbaden Steuervorrichtung für ein stufenlos einstellbares, vorzugsweise hydrostatisches Getriebe für den Antrieb eines Fahrzeuges
SE374699B (fr) * 1973-07-04 1975-03-17 Landstingens Inkopscentral
US4942529A (en) * 1988-05-26 1990-07-17 The Raymond Corporation Lift truck control systems
DE4042041A1 (de) * 1990-12-28 1992-07-02 Jungheinrich Ag Fahrantrieb fuer flurfoerderfahrzeuge
JP3652403B2 (ja) * 1995-05-01 2005-05-25 本田技研工業株式会社 前後輪駆動車両

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10315297A1 (de) * 2003-04-04 2004-10-28 Jungheinrich Ag Bremssystem für ein batteriebetriebenes Flurförderzeug
DE202008005966U1 (de) 2007-12-14 2009-04-16 Jungheinrich Aktiengesellschaft Flurförderzeug mit Abstandssensor zur Radaufstandskraftermittlung
EP2070864A2 (fr) 2007-12-14 2009-06-17 Jungheinrich Aktiengesellschaft Procédé destiné au fonctionnement d'un chariot de manutention
DE102007060433A1 (de) 2007-12-14 2009-06-18 Jungheinrich Aktiengesellschaft Verfahren zum Betrieb eines Flurförderzeugs
DE102014202230A1 (de) 2014-02-07 2015-08-13 Robert Bosch Gmbh Verfahren und Vorrichtung zum Verhindern eines Kippens eines lenkbaren Fahrzeugs

Also Published As

Publication number Publication date
DE19624308A1 (de) 1998-01-02
EP0814051A1 (fr) 1997-12-29
DE59705623D1 (de) 2002-01-17

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