EP0051836A2 - Chariot élévateur - Google Patents

Chariot élévateur Download PDF

Info

Publication number
EP0051836A2
EP0051836A2 EP19810109385 EP81109385A EP0051836A2 EP 0051836 A2 EP0051836 A2 EP 0051836A2 EP 19810109385 EP19810109385 EP 19810109385 EP 81109385 A EP81109385 A EP 81109385A EP 0051836 A2 EP0051836 A2 EP 0051836A2
Authority
EP
European Patent Office
Prior art keywords
motor
lifting
control device
pump motor
electrical control
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.)
Withdrawn
Application number
EP19810109385
Other languages
German (de)
English (en)
Inventor
Bruno Kulick
Franz Wind
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.)
Lansing GmbH
Original Assignee
Lansing GmbH
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 Lansing GmbH filed Critical Lansing GmbH
Publication of EP0051836A2 publication Critical patent/EP0051836A2/fr
Withdrawn legal-status Critical Current

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
    • B66F9/24—Electrical devices or systems

Definitions

  • the invention relates to a lifting vehicle.
  • an electrical control device for the electric drive motor of the travel drive and with a hydraulic lifting device; which can be controlled by a stroke control device and whose hydraulic pump is driven by an electric pump motor.
  • the drive circuit for driving the drive motor is designed with sensitivity, is energy-saving and works smoothly. In previously known vehicles, this is achieved by means of a contactor control, in which the speed and thus the power of the motor is increased by switching off series resistors. Instead of the contactor Control is also common electronic control, in which the speed and thus the power of the motor is changed by a pulse-like control generated by means of thyristors or transistors by varying the number of pulses or the pulse width.
  • An electrical circuit is provided for the hydraulic lifting device, the sensitivity of the lifting function being achieved via a corresponding control valve and the pump. motor is only switched on and off directly.
  • a lift loader is known from DE-OS 2 220 570 in which only one battery-powered electric motor can be used both for the travel drive and for the lifting device.
  • the advantage of this arrangement is that energy can be fed in both when braking and when lowering the lifting device of the battery.
  • a motor can be saved here, but there remains the disadvantage of other previously known drives that a separate control is required both for the traction drive and for the lifting device, as a result of which the lifting vehicle is considerably more expensive.
  • the object of the invention is to provide a lifting vehicle in which the control of the travel drive and the lifting device is considerably simplified and thus is cheaper without losing the sensitivity and smoothness of both drives.
  • a lifting vehicle of the type mentioned at the outset which is characterized in that the electrical control device which controls the driving motor can be connected to the pump motor and can be operated as a lifting control device.
  • the electrical control device which controls the driving motor can be connected to the pump motor and can be operated as a lifting control device.
  • This can be achieved in that, for example, the already existing circuit for the traction motor can also be used to control the pump motor. That is, the valve for controlling the hydraulic system can be simplified since it is only required to lower the lifting device.
  • a switchover device is expediently provided, the actuation of which blocks the control of the traction motor by the electrical control device and the control of the pump motor is released.
  • the switching device can be designed as a switch in the connecting line of the electrical control device with the traction motor and the pump motor or as an electronic locking circuit within the electrical control device.
  • the switching device is expediently connected to the actuating element for the lifting device in such a way that. that when the actuator is not in the zero position element blocks the control of the traction motor and that of the pump motor is released.
  • Both the traction motor and the pump motor can of course be designed as DC motors, which has a favorable effect on the energy consumption of the lifting vehicle, the electrical control device for controlling both motors then advantageously being a thyristor-controlled pulse control.
  • the block diagram shown in the figure essentially shows the entire drive and control system for a lifting vehicle with travel drive 1 and lifting device 2.
  • the driving drive 1 takes place via a driving motor 3 while the lifting device 2 is driven via a pump motor 4.
  • Both motors 3 and 4 can be DC motors and can be powered by a DC battery 5.
  • a control device 6 is provided with which either the drive motor 3 can be controlled via its drive circuit 7 or the pump motor 4 can be controlled via its hydraulic circuit 8.
  • the position of the accelerator pedal 9 in a setpoint generator 10 generates a setpoint value which is fed to the control device 6, which controls the drive motor 3, for example in the form of a thyristor-controlled pulse control.
  • a switch 11 is switched so that there is a connection between the driving circuit 7 and the control device 6, while the connection between the hydraulic circuit 8 and the control device 6 remains open, so that the pump motor 4 and thus the lifting device 2 are not actuated during the actuation of the travel drive 1 is possible.
  • a setpoint value corresponding to the desired lifting capacity is generated in a setpoint generator 14 for the hydraulics via a hydraulic valve 13.
  • the setpoint causes a switchover of the switch 11 so that the connection between the hydraulic circuit 8 and the control device 6 is closed and is simultaneously fed to the control device 6, which in turn now controls the pump motor 4.
  • the drive motor 3 and the pump motor 4 can be controlled alternately with only one control device 6, and the previously used second control device can advantageously be dispensed with without having to do without the sensitivity and smoothness of the travel drive or the drive of the lifting device.

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Civil Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Control Of Fluid Gearings (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Control Of Conveyors (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
EP19810109385 1980-11-11 1981-10-30 Chariot élévateur Withdrawn EP0051836A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19803042501 DE3042501A1 (de) 1980-11-11 1980-11-11 Hubfahrzeug
DE3042501 1980-11-11

Publications (1)

Publication Number Publication Date
EP0051836A2 true EP0051836A2 (fr) 1982-05-19

Family

ID=6116492

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19810109385 Withdrawn EP0051836A2 (fr) 1980-11-11 1981-10-30 Chariot élévateur

Country Status (4)

Country Link
EP (1) EP0051836A2 (fr)
JP (1) JPS57107399A (fr)
AU (1) AU7719681A (fr)
DE (1) DE3042501A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3322804A1 (de) * 1983-06-24 1985-01-03 Miag Fahrzeugbau GmbH, 3300 Braunschweig Explosionsgeschuetztes flurfoerderzeug
JP3072511B2 (ja) * 1998-10-12 2000-07-31 株式会社をくだ屋技研 リフトトラック

Also Published As

Publication number Publication date
DE3042501A1 (de) 1982-09-30
AU7719681A (en) 1982-05-20
JPS57107399A (en) 1982-07-03

Similar Documents

Publication Publication Date Title
EP0630853B1 (fr) Equipement de levage hydraulique pour chariots de manutention mûs par batterie ou analogues
DE3343018A1 (de) Vorrichtung zum automatischen starten und stoppen einer verbrennungskraftmaschine
DE2508938A1 (de) Elektrofahrzeug mit hilfskraftlenkeinrichtung
DE19612518A1 (de) Nutzbremsschaltung
EP0054614A1 (fr) Arrangement d'un circuit pour la récupération de l'énergie de moteurs à excitation en série commandés par un hacheur
EP0053297A1 (fr) Dispositif de direction pour chariots de manutention
DE3130332C2 (fr)
DE3421387C2 (fr)
DE2431340C2 (de) Steuerschaltung für elektrisch angetriebenes Fahrzeug
EP0051836A2 (fr) Chariot élévateur
DE1530495A1 (de) Steuerung fuer elektrische Fahrzeugantriebe
DE2121392A1 (de) Durch einen Elektromotor angetriebenes Fahrzeug, z.B. Hubkarren oder Gabelstapler
EP1044921A2 (fr) Dispositif de commande d un appareil de levage, en particulier un appareil de levage compact
DE1463393B2 (de) Steuereinrichtung fuer elektrische angetriebene hilfsein richtungen eines hubfahrzeuges
DE3213225C2 (de) Überwachungs-Schaltungs-Anordnung für die Fahrtrichtungsschützkontakte bei einem umsteuerbaren elektrischen Fahrmotorantrieb
DE734285C (de) Steuereinrichtung fuer elektrisch angetriebene Fahrzeuge
DE724108C (de) Fahrzeugantrieb mit Einrichtung zur Verhinderung des Schleuderns
DE2119675A1 (de) Anordnung zum Anlassen und Abstellen eines Dieselmotors
DE2654686A1 (de) Antrieb fuer batteriegetriebene elektrofahrzeuge
DE604285C (de) Selbsttaetige Schaltwerksteuerung fuer elektrisch angetriebene Leichttriebfahrzeuge
DE973961C (de) Steuerung zum Anlassen von Fahrmotoren elektrischer Bahnen, insbesondere Strassenbahnen
DE924634C (de) Steuerung fuer elektrisch angetriebene Fahrzeuge mit einem motorisch angetriebenen Schaltwerk
DE972618C (de) Steuerung fuer elektrische Fahrzeuge
DE3709005C1 (en) Circuit arrangement for D.C. chopper convertor-operated D.C. series-wound motors
DE2938566A1 (de) Schaltungsanordnung zur steuerung der energieversorgung einer servolenkung in einem batteriebetriebenen fahrzeug

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): BE CH DE FR GB IT NL SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19831004

RIN1 Information on inventor provided before grant (corrected)

Inventor name: KULICK, BRUNO

Inventor name: WIND, FRANZ