EP1168136A2 - Double pedal control - Google Patents

Double pedal control Download PDF

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Publication number
EP1168136A2
EP1168136A2 EP01115211A EP01115211A EP1168136A2 EP 1168136 A2 EP1168136 A2 EP 1168136A2 EP 01115211 A EP01115211 A EP 01115211A EP 01115211 A EP01115211 A EP 01115211A EP 1168136 A2 EP1168136 A2 EP 1168136A2
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EP
European Patent Office
Prior art keywords
pedal
piston
travel
cylinder tube
inner cylinder
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.)
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Application number
EP01115211A
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German (de)
French (fr)
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EP1168136A3 (en
Inventor
Dirk Kornführer
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STILL GmbH
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STILL GmbH
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Publication date
Application filed by STILL GmbH filed Critical STILL GmbH
Publication of EP1168136A2 publication Critical patent/EP1168136A2/en
Publication of EP1168136A3 publication Critical patent/EP1168136A3/en
Withdrawn legal-status Critical Current

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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G1/00—Controlling members, e.g. knobs or handles; Assemblies or arrangements thereof; Indicating position of controlling members
    • G05G1/30—Controlling members actuated by foot
    • G05G1/42—Controlling members actuated by foot non-pivoting, e.g. sliding
    • 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
    • F15B7/00—Systems in which the movement produced is definitely related to the output of a volumetric pump; Telemotors
    • F15B7/001—With multiple inputs, e.g. for dual control
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G1/00—Controlling members, e.g. knobs or handles; Assemblies or arrangements thereof; Indicating position of controlling members
    • G05G1/30—Controlling members actuated by foot

Definitions

  • the invention relates to a double pedal control for a self-propelled working machine, in particular an industrial truck, with two coupled, oppositely movable pedals, of which one pedal is assigned to the forward drive and the other pedal to the reverse drive, a hydraulic cylinder being operatively connected to each pedal.
  • Such a double pedal control is known from DE 195 34 414 C2.
  • pedals are rotatably mounted on a rail to hydraulic cylinders, which are in hydraulic connection with one another.
  • This arrangement with hydraulic coupling of the pedals can be better adapted to the existing space conditions compared to double pedal controls with mechanical coupling of the pedals.
  • the present invention is based on the object of providing a double pedal control of the type mentioned at the outset which, with a small space requirement and high flexibility, enables favorable ergonomics and a simple structure.
  • cylinders are designed as telescopic cylinders.
  • each cylinder has an outer cylinder tube and an inner cylinder tube concentric with it and hydraulically extendable against spring force, wherein a piston is arranged in the inner cylinder tube, which acts by external force is mechanically retractable into the inner cylinder tube against spring force.
  • This arrangement with spring loading of the inner cylinder tube and the piston also ensures a defined starting position (neutral position) of the double pedal control.
  • a further development of the invention is particularly favorable, in which the travel paths of the inner cylinder tube and the piston are different from one another, the travel path of the inner cylinder tube being smaller than the travel path of the piston.
  • a hydraulic displacement transducer which can be actuated by pressure medium is expediently connected between the two telescopic cylinders and is operatively connected to a travel direction and travel speed sensor.
  • the double pedal control according to the invention has two hydraulic telescopic cylinders 1 and 2, which are connected to one another by a line 3 and are fastened to a base plate 4 of a self-propelled working machine, in particular an industrial truck (for example a forklift).
  • Each telescopic cylinder 1 or 2 consists of an outer cylinder tube 1a or 2a, a concentric inner cylinder tube 1b or 2b and a piston 1c or 2c arranged in the inner cylinder tube 1b or 2b.
  • the inner cylinder tube 1b or 2b can be extended hydraulically against spring force.
  • the piston 1c or 2c is mechanically retractable from the outside against spring force into the inner cylinder tube 1b or 2b.
  • a pedal 5 or 6 is fastened, which is longitudinally movable together with the piston 1c or 2c.
  • Each of the pedals 5 and 6 is assigned to a direction of travel. For example, pedal 5 is provided for reverse travel and pedal 6 for forward travel. A defined neutral position of the double pedal control is ensured by the spring loading of the inner cylinder tubes 1b and 2b and the pistons 1c and 2c.
  • a hydraulic displacement transducer 7 is connected in line 3 (drawn rotated by 90 degrees with respect to the drawing plane), which is in operative connection with a direction of travel and speed sensor, not shown in the figures.
  • the displacement transducer consists of a cylinder 7a, in which a piston 7b is arranged, which divides the cylinder 7a into two chambers and which is connected to a displacement tapping element 7c.
  • FIG. 1 shows the double pedal control in the starting position, in which the working machine equipped with the double pedal control according to the invention stands still.
  • the inner cylinder tube 1b or 2b is retracted by spring force, while the piston 1c or 2c is extended by spring force.
  • the pedals 5 and 6 are consequently in a center position centered by spring force. Both pedals 5 and 6 are therefore at the same distance a from the base plate 4.
  • Figure 2 shows the double pedal control in the actuated state.
  • the pedal 6 assigned to the forward travel, and thus the piston 2c has been moved by a certain amount x in the direction of the outer cylinder tube 2a by external force against spring force, that is to say it has been inserted into the inner cylinder tube 2b.
  • the associated inner cylinder tube 2b has retained its initial position.
  • the piston 7b of the displacement transducer 7 Due to the action of the pressure medium displaced by the piston 1c, the piston 7b of the displacement transducer 7 is shifted to the left in the figure and thereby, on the one hand, a signal for the forward drive and, on the other hand, a speed signal proportional to the amount x in the direction of travel by means of the displacement tap element 7c - And passed the speed sensor.
  • the displaced pressure medium also causes the inner cylinder tube 1b of the hydraulic telescopic cylinder 1 together with the piston 1c to be extended.
  • the pedal 5 connected to the piston 1b moves away from the base plate 4, depending on the dimensioning of the hydraulic telescopic cylinders 1 and 2, by an amount y.
  • the double pedal control according to the invention can be used extremely flexibly and can therefore be easily adapted to different types of work machines. Only a minimal space requirement is required below the base plate.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Control Devices (AREA)

Abstract

The dual pedal control has 2 coupled pedals (5,6), which are moved in opposition to one another, one pedal controlling the forwards movement of the vehicle and the other controlling the backwards movement of the vehicle, each pedal cooperating with a respective hydraulic telescopic cylinder. Each of the latter has an outer cylinder sleeve and a concentric inner cylinder sleeve displaced hydraulically against a spring bias, containing a piston displaced mechanically via an applied external force.

Description

Die Erfindung betrifft eine Doppelpedalsteuerung für eine selbstfahrende Arbeitsmaschine, insbesondere ein Flurförderzeug, mit zwei gekoppelten, gegenläufig beweglichen Pedalen, von denen ein Pedal der Vorwärtsfahrt und das andere Pedal der Rückwärtsfahrt zugeordnet ist, wobei mit jedem Pedal ein hydraulischer Zylinder in Wirkverbindung steht.The invention relates to a double pedal control for a self-propelled working machine, in particular an industrial truck, with two coupled, oppositely movable pedals, of which one pedal is assigned to the forward drive and the other pedal to the reverse drive, a hydraulic cylinder being operatively connected to each pedal.

Eine derartige Doppelpedalsteuerung ist aus der DE 195 34 414 C2 bekannt. Dort sind auf einer Schiene drehbar gelagerte Pedale an hydraulische Zylindern angelenkt, die miteinander in hydraulischer Verbindung stehen. Diese Anordnung mit hydraulischer Koppelung der Pedale (hydraulisches Gestänge) kann gegenüber Doppelpedalsteuerungen mit mechanischer Koppelung der Pedale besser an die vorhandenen Räumverhältnisse angepasst werden.Such a double pedal control is known from DE 195 34 414 C2. There, pedals are rotatably mounted on a rail to hydraulic cylinders, which are in hydraulic connection with one another. This arrangement with hydraulic coupling of the pedals (hydraulic linkage) can be better adapted to the existing space conditions compared to double pedal controls with mechanical coupling of the pedals.

Der vorliegenden Erfindung liegt die Aufgabe zu Grunde, eine Doppelpedalsteuerung der eingangs genannten Art zur Verfügung zu stellen, die bei geringem Platzbedarf und hoher Flexibilität eine günstige Ergonomie ermöglicht und einen einfachen Aufbau ermöglicht.The present invention is based on the object of providing a double pedal control of the type mentioned at the outset which, with a small space requirement and high flexibility, enables favorable ergonomics and a simple structure.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass die Zylinder als Teleskopzylinder ausgebildet sind.This object is achieved in that the cylinders are designed as telescopic cylinders.

Gemäß einer vorteilhaften Ausgestaltung der Erfindung, die einen besonders einfachen Aufbau der Doppelpedalanordnung ermöglicht, weist jeder Zylinder ein äußeres Zylinderrohr und ein dazu konzentrisches, gegen Federkraft hydraulisch ausfahrbares inneres Zylinderrohr auf, wobei in dem inneren Zylinderrohr ein Kolben angeordnet ist, der durch Krafteinwirkung von außen gegen Federkraft in das innere Zylinderrohr mechanisch einfahrbar ist. Diese Anordnung mit Federbelastung des inneren Zylinderrohrs und des Kolbens sorgt zudem für eine definierte Ausgangsstellung (Neutralstellung) der Doppelpedalsteuerung.According to an advantageous embodiment of the invention, which enables a particularly simple construction of the double pedal arrangement, each cylinder has an outer cylinder tube and an inner cylinder tube concentric with it and hydraulically extendable against spring force, wherein a piston is arranged in the inner cylinder tube, which acts by external force is mechanically retractable into the inner cylinder tube against spring force. This arrangement with spring loading of the inner cylinder tube and the piston also ensures a defined starting position (neutral position) of the double pedal control.

Besonders günstig ist eine Weiterbildung der Erfindung, bei der die Verfahrwege des inneren Zylinderrohrs und des Kolbens voneinander verschieden sind, wobei der Verfahrweg des inneren Zylinderrohrs kleiner ist als der Verfahrweg des Kolbens. Dadurch wird in ergonomisch vorteilhafter Weise beim Niederdrücken eines der Pedale, beispielsweise des für die Vorwärtsfahrt vorgesehenen Pedals, das damit hydraulisch zwangsgekoppelte andere Pedal, das im vorliegenden Beispiel der Rückwärtsfahrt zugeordnet ist, in wesentlich geringerem Maße bewegt. Ergonomisch günstige Fußwinkelstellungen können daher besser eingehalten werden als bei den bisher bekannten Doppelpedalsteuerungen.A further development of the invention is particularly favorable, in which the travel paths of the inner cylinder tube and the piston are different from one another, the travel path of the inner cylinder tube being smaller than the travel path of the piston. As a result, when one of the pedals, for example the pedal provided for forward travel, is depressed, the other pedal hydraulically positively coupled, which in the present example is assigned to reverse travel, is moved in an ergonomically advantageous manner to a substantially lesser extent. Ergonomically favorable foot angle positions can therefore be maintained better than with the previously known double pedal controls.

Sofern am Außenende des Kolbens ein mit dem Kolben längsbewegliches Pedal befestigt ist, wird der Aufbau der erfindungsgemäßen Doppelpedalsteuerung stark vereinfacht. Zudem benötigt eine solche Anordnung nur sehr wenig Platz.If a pedal movable longitudinally with the piston is attached to the outer end of the piston, the construction of the double pedal control according to the invention is greatly simplified. In addition, such an arrangement takes up very little space.

Zweckmäßigerweise ist zwischen die beiden Teleskopzylinder ein durch Druckmittel betätigbarer hydraulischer Wegaufnehmer geschaltet, der mit einem Fahrtrichtungsund Fahrgeschwindigkeitsgeber in Wirkverbindung steht.A hydraulic displacement transducer which can be actuated by pressure medium is expediently connected between the two telescopic cylinders and is operatively connected to a travel direction and travel speed sensor.

Weitere Vorteile und Einzelheiten der Erfindung werden anhand des in den schematischen Figuren dargestellten Ausführungsbeispieles näher erläutert. Dabei zeigt

  • Figur 1 eine erfindungsgemäße Doppelpedalsteuerung im Schnitt und
  • Figur 2 die Doppelpedalsteuerung gemäß Figur 1 im betätigten Zustand.
Further advantages and details of the invention are explained in more detail with reference to the exemplary embodiment shown in the schematic figures. It shows
  • Figure 1 shows a double pedal control according to the invention in section and
  • Figure 2 shows the double pedal control according to Figure 1 in the actuated state.

Die erfindungsgemäße Doppelpedalsteuerung weist zwei hydraulische Teleskopzylinder 1 und 2 auf, die durch eine Leitung 3 miteinander verbunden und an einer Bodenplatte 4 einer selbstfahrenden Arbeitsmaschine, insbesondere einem Flurförderzeug (beispielsweise Gabelstapler), befestigt sind. Jeder Teleskopzylinder 1 bzw. 2 besteht aus einem äußeren Zylinderohr 1a bzw. 2a, einem konzentrischen inneren Zylinderrohr 1b bzw. 2b und einem in dem inneren Zylinderrohr 1b bzw. 2b angeordneten Kolben 1c bzw. 2c.The double pedal control according to the invention has two hydraulic telescopic cylinders 1 and 2, which are connected to one another by a line 3 and are fastened to a base plate 4 of a self-propelled working machine, in particular an industrial truck (for example a forklift). Each telescopic cylinder 1 or 2 consists of an outer cylinder tube 1a or 2a, a concentric inner cylinder tube 1b or 2b and a piston 1c or 2c arranged in the inner cylinder tube 1b or 2b.

Das innere Zylinderrohr 1 b bzw. 2b ist gegen Federkraft hydraulisch ausfahrbar. Der Kolben 1c bzw. 2c ist durch Krafteinwirkung von außen gegen Federkraft in das innere Zylinderrohr 1b bzw. 2b mechanisch einfahrbar. Am äußeren Ende jedes Kolbens 1c bzw. 2c ist ein Pedal 5 bzw. 6 befestigt, das zusammen mit dem Kolben 1c bzw. 2c längsbeweglich ist. Jedes der Pedale 5 bzw. 6 ist einer Fahrtrichtung zugeordnet. Beispielsweise ist das Pedal 5 für die Rückwärtsfahrt und das Pedal 6 für die Vorwärtsfahrt vorgesehen. Durch die Federbelastung der inneren Zylinderrohre 1b und 2b sowie der Kolben 1c und 2c ist eine definierte Neutralstellung der Dopplepedalsteuerung gewährleistet.The inner cylinder tube 1b or 2b can be extended hydraulically against spring force. The piston 1c or 2c is mechanically retractable from the outside against spring force into the inner cylinder tube 1b or 2b. At the outer end of each piston 1c or 2c, a pedal 5 or 6 is fastened, which is longitudinally movable together with the piston 1c or 2c. Each of the pedals 5 and 6 is assigned to a direction of travel. For example, pedal 5 is provided for reverse travel and pedal 6 for forward travel. A defined neutral position of the double pedal control is ensured by the spring loading of the inner cylinder tubes 1b and 2b and the pistons 1c and 2c.

In die Leitung 3 ist ein hydraulischer Wegaufnehmer 7 geschaltet (in Bezug auf die Zeichenebene um 90 Grad gedreht gezeichnet), der mit einem in den Figuren nicht dargestellten Fahrtrichtungs- und Fahrgeschwindigkeitsgeber in Wirkverbindung steht. Der Wegaufnehmer besteht aus einem Zylinder 7a, in dem ein Kolben 7b angeordnet ist, der den Zylinder 7a in zwei Kammem unterteilt und der mit einem Weg-Abgriffs-Element 7c verbunden ist. Grundsätzlich ist es auch möglich, andere geeignete Signalgeber für die Fahrtrichtung und die gewünschte Fahrgeschwindigkeit vorzusehen und/oder die Signalgeber anders anzuordnen.A hydraulic displacement transducer 7 is connected in line 3 (drawn rotated by 90 degrees with respect to the drawing plane), which is in operative connection with a direction of travel and speed sensor, not shown in the figures. The displacement transducer consists of a cylinder 7a, in which a piston 7b is arranged, which divides the cylinder 7a into two chambers and which is connected to a displacement tapping element 7c. In principle, it is also possible to provide other suitable signal transmitters for the direction of travel and the desired driving speed and / or to arrange the signal transmitters differently.

Figur 1 zeigt die Doppelpedalsteuerung in Ausgangsstellung, bei der die mit der erfindungsgemäßen Doppelpedalsteuerung ausgerüstete Arbeitsmaschine still steht. Dabei ist jeweils das innere Zylinderrohr 1b bzw. 2b durch Federkraft eingefahren, während der Kolben 1c bzw. 2c durch Federkraft ausgefahren ist. Die Pedale 5 und 6 befinden sich folglich in einer durch Federkraft zentrierten Mittelstellung. Beide Pedale 5 und 6 weisen daher denselben Abstand a zur Bodenplatte 4 auf.FIG. 1 shows the double pedal control in the starting position, in which the working machine equipped with the double pedal control according to the invention stands still. The inner cylinder tube 1b or 2b is retracted by spring force, while the piston 1c or 2c is extended by spring force. The pedals 5 and 6 are consequently in a center position centered by spring force. Both pedals 5 and 6 are therefore at the same distance a from the base plate 4.

Figur 2 zeigt die Doppelpedalsteuerung im betätigten Zustand. Dabei ist im vorliegenden Ausführungsbeispiel das der Vorwärtsfahrt zugeordnete Pedal 6 und damit der Kolben 2c durch äußere Krafteinwirkung gegen Federkraft um einen bestimmten Betrag x in Richtung zum äußeren Zylinderrohr 2a bewegt, also in das innere Zylinderrohr 2b eingefahren worden. Das zugehörige innere Zylinderrohr 2b hat hierbei seine Ausgangsstellung beibehalten. Es ergibt sich ein Abstand a-x zwischen dem Pedal 6 und der Bodenplatte 4.Figure 2 shows the double pedal control in the actuated state. In the present exemplary embodiment, the pedal 6 assigned to the forward travel, and thus the piston 2c, has been moved by a certain amount x in the direction of the outer cylinder tube 2a by external force against spring force, that is to say it has been inserted into the inner cylinder tube 2b. The associated inner cylinder tube 2b has retained its initial position. There is a distance a-x between the pedal 6 and the base plate 4.

Durch die Wirkung des von dem Kolben 1c verdrängten Druckmittels wird der Kolben 7b des Weggaufnehmers 7 nach in der Figur links verschoben und dadurch mittels des Weg-Abgriffs-Elements 7c einerseits ein Signal für die Vorwärtsfahrt und andererseits ein zum Betrag x proportionales Geschwindigkeitssignal an den Fahrtrichtungs- und Fahrgeschwindigkeitsgeber weiter gegeben.Due to the action of the pressure medium displaced by the piston 1c, the piston 7b of the displacement transducer 7 is shifted to the left in the figure and thereby, on the one hand, a signal for the forward drive and, on the other hand, a speed signal proportional to the amount x in the direction of travel by means of the displacement tap element 7c - And passed the speed sensor.

Femer bewirkt das verdrängte Druckmittel ein Ausfahren des inneren Zylinderrohrs 1b des hydraulischen Teleskopzylinders 1 samt Kolben 1c. Dadurch bewegt sich das mit dem Kolben 1b verbundene Pedal 5 von der Bodenplatte 4 weg und zwar - je nach Dimensionierung der hydraulischen Teleskopzylinder 1 und 2 - um einen Betrag y. Es ergibt sich insgesamt ein Abstand a+y des Pedals 5 von der Bodenplatte 4. Ergonomisch günstig ist es, wenn der Betrag y geringer ist als der Betrag x, so dass sich das Pedal 5 um einen geringeren Weg von der Bodenplatte 4 entfernt, als das Pedal 6 zur Bodenplatte 4 hin bewegt.The displaced pressure medium also causes the inner cylinder tube 1b of the hydraulic telescopic cylinder 1 together with the piston 1c to be extended. As a result, the pedal 5 connected to the piston 1b moves away from the base plate 4, depending on the dimensioning of the hydraulic telescopic cylinders 1 and 2, by an amount y. There is an overall distance a + y of the pedal 5 from the base plate 4. It is ergonomically advantageous if the amount y is less than the amount x, so that the pedal 5 moves a smaller distance from the base plate 4 than the pedal 6 moves to the base plate 4.

Bei Betätigung des Pedals 5 anstelle des Pedals 6 wird sinngemäß derselbe Ablauf wie oben beschrieben erzielt, jedoch für die Rückwärtsfahrt. Die erfindungsgemäße Doppelpedalsteuerung ist im Gegensatz zu einer Doppelpedalsteuerung mit mechanischer Koppelung der Pedale äußerst flexibel einsetzbar und lässt sich daher leicht an verschiedenartige Arbeitsmaschinen anpassen. Unterhalb der Bodenplatte ist dabei nur ein minimaler Platzbedarf erforderlich.When the pedal 5 is actuated instead of the pedal 6, the same procedure as described above is achieved, but for the reverse drive. In contrast to a double pedal control with mechanical coupling of the pedals, the double pedal control according to the invention can be used extremely flexibly and can therefore be easily adapted to different types of work machines. Only a minimal space requirement is required below the base plate.

Claims (5)

Doppelpedalsteuerung für eine selbstfahrende Arbeitsmaschine, insbesondere ein Flurförderzeug, mit zwei gekoppelten, gegenläufig beweglichen Pedalen, von denen ein Pedal der Vorwärtsfahrt und das andere Pedal der Rückwärtsfahrt zugeordnet ist, wobei mit jedem Pedal ein hydraulischer Zylinder in Wirkverbindung steht, dadurch gekennzeichnet, dass die Zylinder als Teleskopzylinder (1; 2) ausgebildet sind.Double pedal control for a self-propelled working machine, in particular an industrial truck, with two coupled, oppositely movable pedals, one pedal of which is assigned to forward travel and the other pedal to reverse travel, with each pedal being operatively connected to a hydraulic cylinder, characterized in that the cylinders are designed as telescopic cylinders (1; 2). Doppelpedalsteuerung nach Anspruch 1, dadurch gekennzeichnet, dass jeder Zylinder (1; 2) ein äußeres Zylinderrohr (1a; 2a) und ein dazu konzentrisches, gegen Federkraft hydraulisch ausfahrbares inneres Zylinderrohr (1b; 2b) aufweist, wobei in dem inneren Zylinderrohr (1b; 2b) ein Kolben (1c; 2c) angeordnet ist, der durch Krafteinwirkung von außen gegen Federkraft in das innere Zylinderrohr (1 b; 2b) mechanisch einfahrbar ist.Double pedal control according to Claim 1, characterized in that each cylinder (1; 2) has an outer cylinder tube (1a; 2a) and an inner cylinder tube (1b; 2b) which is concentric with it and can be hydraulically extended against spring force, wherein in the inner cylinder tube (1b; 2b) a piston (1c; 2c) is arranged, which can be mechanically retracted into the inner cylinder tube (1b; 2b) against the force of a spring from the outside. Doppelpedalsteuerung nach Anspruch 2, dadurch gekennzeichnet, dass die Verfahrwege (y; x) des inneren Zylinderrohrs (1b; 2b) und des Kolbens (1c; 2c) voneinander verschieden sind, wobei der Verfahrweg (y) des inneren Zylinderrohrs (1b; 2b) kleiner ist als der Verfahrweg (x) des Kolbens (1c; 2c).Double pedal control according to claim 2, characterized in that the travel paths (y; x) of the inner cylinder tube (1b; 2b) and the piston (1c; 2c) are different from one another, the travel path (y) of the inner cylinder tube (1b; 2b) is smaller than the travel (x) of the piston (1c; 2c). Doppelpedalsteuerung nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass am Außenende des Kolbens (1c; 2c) ein mit dem Kolben (1c; 2c) längsbewegliches Pedal (5; 6) befestigt ist.Double pedal control according to Claim 2 or 3, characterized in that a pedal (5; 6) which is longitudinally movable with the piston (1c; 2c) is attached to the outer end of the piston (1c; 2c). Doppelpedalsteuerung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass zwischen die beiden Teleskopzylinder (1, 2) ein durch Druckmittel betätigbarer hydraulischer Wegaufnehmer (7) geschaltet ist, der mit einem Fahrtrichtungs- und Fahrgeschwindigkeitsgeber in Wlrkverbindung steht.Double pedal control according to one of claims 1 to 4, characterized in that between the two telescopic cylinders (1, 2) is connected a hydraulic displacement sensor (7) which can be actuated by pressure medium and which is in active connection with a travel direction and travel speed sensor.
EP01115211A 2000-06-30 2001-06-22 Double pedal control Withdrawn EP1168136A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10031934 2000-06-30
DE2000131934 DE10031934A1 (en) 2000-06-30 2000-06-30 Double pedal control

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EP1168136A2 true EP1168136A2 (en) 2002-01-02
EP1168136A3 EP1168136A3 (en) 2002-01-16

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11892867B2 (en) * 2022-03-03 2024-02-06 KSR IP Holdings, LLC Pedal pad assemblies

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007040541B4 (en) * 2007-08-28 2014-04-30 Jungheinrich Aktiengesellschaft Pedal control for a vehicle
DE102014103167A1 (en) * 2014-03-10 2015-09-24 Ab Elektronik Gmbh pedal unit

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19534414A1 (en) 1995-09-16 1997-03-20 Jungheinrich Ag Pedal control for an industrial truck

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Publication number Priority date Publication date Assignee Title
FR1398130A (en) * 1964-03-27 1965-05-07 Soudure Autogene Francaise Control of a movement by two control devices
US4089172A (en) * 1976-10-13 1978-05-16 Junttila David W Position controller
DE29921943U1 (en) * 1999-12-16 2000-07-27 Tyroller Hydraulik Herzberg Gm Control device for the manual or foot-guided control of work machines

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19534414A1 (en) 1995-09-16 1997-03-20 Jungheinrich Ag Pedal control for an industrial truck

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11892867B2 (en) * 2022-03-03 2024-02-06 KSR IP Holdings, LLC Pedal pad assemblies

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DE10031934A1 (en) 2002-01-10

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