EP1932799B1 - Industrial truck - Google Patents

Industrial truck Download PDF

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Publication number
EP1932799B1
EP1932799B1 EP07023312A EP07023312A EP1932799B1 EP 1932799 B1 EP1932799 B1 EP 1932799B1 EP 07023312 A EP07023312 A EP 07023312A EP 07023312 A EP07023312 A EP 07023312A EP 1932799 B1 EP1932799 B1 EP 1932799B1
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EP
European Patent Office
Prior art keywords
bearing
arms
conveyor according
ground conveyor
frame
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EP07023312A
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German (de)
French (fr)
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EP1932799A1 (en
Inventor
Olaf Dipl.-Ing. Rath
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Jungheinrich AG
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Jungheinrich AG
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    • 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
    • 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
    • B66F9/07513—Details concerning the chassis
    • B66F9/07518—Fuel or oil tank arrangements

Definitions

  • the invention relates to an industrial truck according to the preamble of patent claim 1.
  • U.S. Patent No. 4,460,064 shows an industrial truck, which can overcome a difference in height, in particular between the ground and the bed of a truck.
  • two parallel wheel arms are pivotally connected about a horizontal axis to a drive part, so that they can be folded upwards.
  • the distance of the wheel arms from each other can not be changed.
  • the invention has for its object to provide an industrial truck, which allows a simple and inexpensive connection of the wheel arms with simple and effective readjustment with a change in Radarmweite.
  • the rear end of the wheel arms is secured to a bearing arm which extends approximately perpendicular to the wheel arm and which is fittingly and slidably received in at least one bearing opening of the frame or the bearing member.
  • a bearing arm which extends approximately perpendicular to the wheel arm and which is fittingly and slidably received in at least one bearing opening of the frame or the bearing member.
  • On the frame and / or in the load part locking means are provided with which the axial and rotational position of the bearing arms is releasably fixed.
  • bearing opening is to be equipped with sufficient axial length to ensure adequate support of the bearing arm.
  • the wheel arms can be moved in the bearing opening, wherein the locking means ensure that the wheel arms are set both in axial and in rotational position. If the bearing arm is out of round or polygonal in cross section, for example square, the rotational position is determined in this way. However, it can not be changed in this case. In this case, care must therefore be taken only for an axial securing of the assumed position.
  • the bearing arm is to be fixable in different rotational positions, it is to be provided with either a circular cross-section and to be received in a complementary bearing opening. If, however, the bearing arm is non-circular or polygonal in cross-section, then it is to be surrounded by a component having the bearing opening, which in turn is mounted limitedly rotatable in the frame or in the load part. In this case, then either this bearing component or the bearing arm is determined by suitable locking means in the direction of rotation.
  • the fixing of the bearing arms can be done in the axial and / or rotational position by means of a clamping device.
  • a fixation with the help of ringiten is possible.
  • an adjusting device can be provided which acts eccentrically to the axis of the bearing arms and thereby permits or causes a limited rotation of the bearing arms.
  • the bearing arm may be provided at intervals or continuously eccentrically with an axially parallel surface, and an adjusting screw acts with its end against the end of this surface to allow rotation of the bearing arm.
  • the already mentioned clamping device which also forms a second bearing opening, may be formed by two shells, which are clamped by means of two clamping screws against each other to set the bearing arm in the axial and rotational directions.
  • a drawbar guided truck 10 is shown in side view, but the drawbar is not shown.
  • the pallet truck 10 consists of a drive part 12 with a traction motor 14 and a mast 16, on which a not shown fork is guided adjustable in height. The adjustment is carried out by means of a lifting and lowering drive, also not shown.
  • a pair of wheel arms are mounted on its frame, one of which can be seen at 18. At the free end of the wheel arms load wheels 20 are mounted.
  • the wheel arms 18 have at the rear end at the top of a bearing member 22 which receives a bearing arm 24 in an opening.
  • the bearing arm 24 is connected by suitable means fixed to the bearing member 22.
  • the bearing arm 24 is shown without a wheel arm. It can be seen that the bearing arm 24 has a substantially circular cross-section, but at the free end is flattened at 26 for the purpose of non-rotatable mounting in the bearing component 22 (FIG. Fig. 1 ).
  • a bearing block 30 is mounted with a cylindrical opening 32. The bearing block 30 is welded to the sheet 28, for example.
  • the bearing arm 24 extends through the opening 32 and a concentric opening in the plate 28 to a clamping device 34.
  • the clamping device consists of a first jaw 36 which is fixedly secured to a plate 38 of the frame of the drive member 12 and a second jaw 40th
  • the jaws 36, 40 are tensioned against each other by two clamping screws, which are not shown here.
  • openings are provided in the clamping jaws 36, 40, as indicated at 42 and 48, respectively.
  • the jaws 36, 40 have semicircular shells with which they enclose the bearing arm 24 on opposite sides.
  • a plate 52 is mounted, which for illustration purposes in Fig. 2 as transparent as opposed to FIG. 3 ,
  • the plate 38 has a threaded bore 54, on which the mast 16 after Fig. 1 is appropriate.
  • the bearing arm 24 has a plurality of recesses 56 which are arranged eccentrically to the longitudinal axis of the bearing arm 24 at intervals.
  • the bottom 58 of the recesses 56 is approximately vertical.
  • a threaded hole 60 is provided, which, as in Fig. 4 shown, a set screw 62 receives.
  • the adjusting screw 62 is arranged so that it can engage with the recess 56, in particular with the bottom 58, as in Fig. 4 is shown. By changing the position of the adjusting screw 62, the rotational position of the bearing arm 24 also changes with the corresponding torque.

Description

Die Erfindung bezieht sich auf ein Flurförderzeug nach dem Oberbegriff des Patentanspruchs 1.The invention relates to an industrial truck according to the preamble of patent claim 1.

Verschiedene Typen von Flurförderzeugen weisen sogenannte Radarme auf, die am Rahmen des Antriebsteils oder am Hubgerüst des Lastteils angebracht sind und am vorderen Ende Lasträder lagern. In manchen Fällen dienen die Lastarme selbst als Lastaufnahmemittel und vollziehen daher lediglich einen sogenannten Freihub, um eine auf dem Boden stehende Palette soweit anzuheben, daß sie transportiert werden kann. Bei Flurförderzeugen mit einer Lastgabel, die an einem Hubgerüst geführt und mittels einer Hubvorrichtung betätigt wird, sind die Arme der Lastgabel zu den Radarmen ausgerichtet und übergreifen diese in der unteren Position. Es gibt hingegen auch Anwendungsfälle, bei denen die sogenannte Radarmweite über die Gabelbreite der Lastgabel hinausgeht bzw. bei denen auch die Radarmweite veränderlich gemacht werden soll. In diesem Fall können die Radarme nicht fest am Rahmen oder am Lastteil angebracht werden, beispielsweise durch Verschweißung, sondern es müssen Befestigungsmittel vorgesehen werden, die ein Lösen der Radarme ermöglichen bzw. auch eine Verstellung relativ zum Rahmen bzw. Lastteil, um die Radarmweite zu verändern.Various types of industrial trucks have so-called wheel arms, which are attached to the frame of the drive part or on the mast of the load part and store at the front end load wheels. In some cases, the load arms themselves serve as load-carrying means and therefore only carry out a so-called free lift in order to lift a pallet standing on the floor so far that it can be transported. For trucks with a fork, which is guided on a mast and operated by a lifting device, the arms of the fork are aligned with the arms and overlap them in the lower position. On the other hand, there are also applications in which the so-called Radarmweite beyond the fork width of the fork exceeds or in which the Radarmweite should be made variable. In this case, the wheel arms can not be fixedly attached to the frame or the load part, for example by welding, but there must be provided fastening means that allow release of the wheel arms or also an adjustment relative to the frame or load part to change the Radarmweite ,

Die Lagerung von Radarmen bei veränderlichen Radarmweiten ist problematisch. Durch Spiel und Toleranzen sowie Durchbiegung der Radarme und unterschiedliche Torsion der Arme, über welche die Radarme am Rahmen bzw. Lastteil angebracht sind, ist es schwierig, unter allen Bedingungen die Bodenfreiheit zu gewährleisten, insbesondere bei Vierradfahrzeugen. Je größer der Abstand der Radarme vom Anbringungsort ist, um so größer sind Durchbiegung und Torsion. Die Bodenfreiheit kann dabei so weit verringert werden, daß das Fahrzeug auf dem Boden aufsitzt.The storage of radar arms with variable Radarmweiten is problematic. By play and tolerances and deflection of the wheel arms and different torsion of the arms over which the wheel arms are mounted on the frame or load part, it is difficult to ensure the ground clearance in all conditions, especially in four-wheel vehicles. The greater the distance of the wheel arms from the mounting location, the greater the deflection and torsion. The ground clearance can be reduced so far that the vehicle is seated on the ground.

Bei einem Schubmaststapler oder einem sogenannten Reach Truck ist bekannt geworden, die Radarme mit einem unterschiedlich langen Armstück zu verschweißen je nach gewünschter Radarmbreite und das Armstück mit einem Plattenflansch zu versehen, der mit einem Gegenflansch am Rahmen oder am Hubgerüst verschraubt wird. Die Radarmweite kann nur bei der Montage des Flurförderzeugs eingestellt werden. Eine spätere Veränderung ist nicht ohne weiteres möglich.In a reach truck or a so-called reach truck has become known to weld the wheel arms with a different length arm piece depending on the desired Radarmbreite and to provide the arm piece with a plate flange which is bolted to a mating flange on the frame or on the mast. The wheel arm width can only be adjusted during assembly of the truck. A later change is not possible without further ado.

US-Patent Nr. 4,460,064 zeigt ein Flurförderzeug, das einen Höhenunterschied insbesondere zwischen dem Erdboden und der Ladefläche eines LKW überwinden kann. In einer Ausgestaltung sind zwei parallele Radarme um eine horizontale Achse schwenkbar an einen Antriebsteil angelenkt, so dass sie nach oben geklappt werden können. Der Abstand der Radarme voneinander kann jedoch nicht verändert werden. U.S. Patent No. 4,460,064 shows an industrial truck, which can overcome a difference in height, in particular between the ground and the bed of a truck. In one embodiment, two parallel wheel arms are pivotally connected about a horizontal axis to a drive part, so that they can be folded upwards. However, the distance of the wheel arms from each other can not be changed.

Der Erfindung liegt die Aufgabe zugrunde, ein Flurförderzeug zu schaffen, das eine einfache und unaufwendige Anbindung der Radarme ermöglicht bei einfacher und wirksamer Nachstellmöglichkeit bei einer Veränderung der Radarmweite.The invention has for its object to provide an industrial truck, which allows a simple and inexpensive connection of the wheel arms with simple and effective readjustment with a change in Radarmweite.

Diese Aufgabe wird durch die Merkmale des Patentanspruchs 1 gelöst.This object is solved by the features of patent claim 1.

Bei der Erfindung ist das hintere Ende der Radarme an einem Lagerarm befestigt, der sich annähernd senkrecht zum Radarm erstreckt und der passend und verschiebbar in mindestens einer Lageröffnung des Rahmens oder des Lagerbauteils aufgenommen ist. Am Rahmen und/oder im Lastteil sind Feststellmittels vorgesehen, mit welchen die axiale und Drehlage der Lagerarme lösbar fixierbar ist.In the invention, the rear end of the wheel arms is secured to a bearing arm which extends approximately perpendicular to the wheel arm and which is fittingly and slidably received in at least one bearing opening of the frame or the bearing member. On the frame and / or in the load part locking means are provided with which the axial and rotational position of the bearing arms is releasably fixed.

Wird nur eine Lageröffnung vorgesehen, dann ist diese mit ausreichender axialer Länge auszustatten, um eine ausreichende Abstützung des Lagerarms zu gewährleisten. Bevorzugt ist die Anordnung von mindestens zwei axial beabstandeten Lageröffnungen, durch welche die Radarme stabil abgestützt sind.If only one bearing opening provided, then this is to be equipped with sufficient axial length to ensure adequate support of the bearing arm. Preferably, the arrangement of at least two axially spaced bearing openings through which the wheel arms are stably supported.

Die Radarme können in der Lageröffnung verschoben werden, wobei die Feststellmittel dafür sorgen, daß die Radarme sowohl in axialer als auch in Drehlage festgelegt sind. Ist der Lagerarm unrund oder im Querschnitt polygonal, zum Beispiel quadratisch, ist auf diese Weise die Drehlage festgelegt. Sie kann jedoch in diesem Falle auch nicht mehr geändert werden. In diesem Fall ist daher lediglich für eine axiale Sicherung der eingenommenen Position Sorge zu tragen.The wheel arms can be moved in the bearing opening, wherein the locking means ensure that the wheel arms are set both in axial and in rotational position. If the bearing arm is out of round or polygonal in cross section, for example square, the rotational position is determined in this way. However, it can not be changed in this case. In this case, care must therefore be taken only for an axial securing of the assumed position.

Soll der Lagerarm in unterschiedlichen Drehlagen fixierbar sein, ist dieser entweder mit kreisförmigem Querschnitt zu versehen und in einer komplementären Lageröffnung aufzunehmen. Ist der Lagerarm hingegen im Querschnitt unrund oder mehrkantig, dann ist er von einem die Lageröffnung aufweisenden Bauteil zu umgeben, das seinerseits begrenzt drehbar im Rahmen oder im Lastteil gelagert ist. In diesem Fall ist dann entweder dieses Lagerbauteil oder der Lagerarm durch geeignete Feststellmittel in Drehrichtung festzulegen.If the bearing arm is to be fixable in different rotational positions, it is to be provided with either a circular cross-section and to be received in a complementary bearing opening. If, however, the bearing arm is non-circular or polygonal in cross-section, then it is to be surrounded by a component having the bearing opening, which in turn is mounted limitedly rotatable in the frame or in the load part. In this case, then either this bearing component or the bearing arm is determined by suitable locking means in the direction of rotation.

Nach einer Ausgestaltung der Erfindung kann die Fixierung der Lagerarme in axialer und/oder Drehlage mit Hilfe einer Klemmvorrichtung erfolgen. Alternativ ist auch eine Fixierung mit Hilfe von Schraubstiften möglich.According to one embodiment of the invention, the fixing of the bearing arms can be done in the axial and / or rotational position by means of a clamping device. Alternatively, a fixation with the help of Schraubstiften is possible.

Ist der Querschnitt der Lagerarme kreisförmig, kann nach einer weiteren Ausgestaltung der Erfindung eine Verstellvorrichtung vorgesehen werden, die exzentrisch zur Achse an den Lagerarmen angreift und dadurch eine begrenzte Verdrehung der Lagerarme zuläßt bzw. bewirkt. Zu diesem Zweck kann der Lagerarm in Abständen oder durchgehend exzentrisch mit einer achsparallel verlaufenden Fläche versehen sein, und eine Verstellschraube wirkt mit ihrem Ende gegen das Ende dieser Fläche, um eine Drehung des Lagerarms zu ermöglichen.Is the cross section of the bearing arms circular, according to a further embodiment of the invention, an adjusting device can be provided which acts eccentrically to the axis of the bearing arms and thereby permits or causes a limited rotation of the bearing arms. For this purpose, the bearing arm may be provided at intervals or continuously eccentrically with an axially parallel surface, and an adjusting screw acts with its end against the end of this surface to allow rotation of the bearing arm.

Die bereits erwähnte Klemmvorrichtung, welche zugleich eine zweite Lageröffnung bildet, kann von zwei Schalen gebildet sein, die mittels zweier Klemmschrauben gegeneinander gespannt werden, um den Lagerarm in axialer und Drehrichtung festzulegen.The already mentioned clamping device, which also forms a second bearing opening, may be formed by two shells, which are clamped by means of two clamping screws against each other to set the bearing arm in the axial and rotational directions.

Ein Ausführungsbeispiel der Erfindung soll nachfolgend anhand von Zeichnungen näher erläutert werden.

Fig. 1
zeigt in Seitenansicht ein Flurförderzeug nach der Erfindung.
Fig. 2
zeigt perspektivisch eine Einzelheit des Flurförderzeugs nach Fig. 1.
Fig. 3
zeigt noch einmal gegenüber Fig. 1 vergrößert eine ähnliche Ansicht wie Fig. 2.
Fig. 4
zeigt einen Schnitt durch einen Lagerblock der Anordnung nach den Figuren 2 und 3.
An embodiment of the invention will be explained below with reference to drawings.
Fig. 1
shows a side view of an industrial truck according to the invention.
Fig. 2
shows in perspective a detail of the truck Fig. 1 ,
Fig. 3
shows again opposite Fig. 1 enlarges a similar view as Fig. 2 ,
Fig. 4
shows a section through a bearing block of the arrangement according to the Figures 2 and 3 ,

In Fig. 1 ist ein deichselgeführter Hubwagen 10 in Seitenansicht dargestellt, wobei jedoch die Deichsel nicht gezeigt ist. Der Hubwagen 10 besteht aus einem Antriebsteil 12 mit einem Fahrmotor 14 und einem Hubgerüst 16, an dem eine nicht gezeigte Lastgabel höhenverstellbar geführt ist. Die Verstellung erfolgt mit Hilfe eines ebenfalls nicht gezeigten Heben- und Senkenantriebs.In Fig. 1 a drawbar guided truck 10 is shown in side view, but the drawbar is not shown. The pallet truck 10 consists of a drive part 12 with a traction motor 14 and a mast 16, on which a not shown fork is guided adjustable in height. The adjustment is carried out by means of a lifting and lowering drive, also not shown.

An gegenüberliegenden Seiten des Antriebsteils 12 ist an seinem Rahmen ein Paar von Radarmen angebracht, von denen einer bei 18 zu erkennen ist. Am freien Ende der Radarme sind Lasträder 20 gelagert.On opposite sides of the drive part 12, a pair of wheel arms are mounted on its frame, one of which can be seen at 18. At the free end of the wheel arms load wheels 20 are mounted.

Die Radarme 18 weisen am hinteren Ende an der Oberseite ein Lagerbauteil 22 auf, das in eine Öffnung einen Lagerarm 24 aufnimmt. Der Lagerarm 24 ist durch geeignete Mittel fest mit dem Lagerbauteil 22 verbunden.The wheel arms 18 have at the rear end at the top of a bearing member 22 which receives a bearing arm 24 in an opening. The bearing arm 24 is connected by suitable means fixed to the bearing member 22.

In den Figuren 2 und 3 ist der Lagerarm 24 ohne einen Radarm dargestellt. Man erkennt, daß der Lagerarm 24 im wesentlichen kreisförmigen Querschnitt hat, am freien Ende jedoch bei 26 abgeflacht ist zwecks unverdrehbarer Aufnahme im Lagerbauteil 22 (Fig. 1). An einem vertikalen Blech 28 des Rahmens des nur andeutungsweise dargestellten Antriebsteils des Flurförderzeugs nach Fig. 1 ist außen ein Lagerblock 30 angebracht mit einer zylindrischen Öffnung 32. Der Lagerblock 30 ist zum Beispiel an das Blech 28 angeschweißt. Der Lagerarm 24 erstreckt sich durch die Öffnung 32 und eine dazu konzentrische Öffnung im Blech 28 zu einer Klemmvorrichtung 34. Die Klemmvorrichtung besteht aus einer ersten Backe 36, die fest mit einem Blech 38 des Rahmens des Antriebsteils 12 befestigt ist und aus einer zweiten Backe 40. Die Backen 36, 40 werden durch zwei Klemmschrauben, die hier nicht dargestellt sind, gegeneinander gespannt. Hierfür sind in den Klemmbacken 36, 40 Öffnungen vorgesehen, wie bei 42 bzw. 48 angedeutet. Die Klemmbacken 36, 40 haben halbkreisförmige Schalen, mit welchen sie den Lagerarm 24 auf gegenüberliegenden Seiten umfassen.In the Figures 2 and 3 the bearing arm 24 is shown without a wheel arm. It can be seen that the bearing arm 24 has a substantially circular cross-section, but at the free end is flattened at 26 for the purpose of non-rotatable mounting in the bearing component 22 (FIG. Fig. 1 ). On a vertical plate 28 of the frame of only hinted drive part of the truck after Fig. 1 On the outside, a bearing block 30 is mounted with a cylindrical opening 32. The bearing block 30 is welded to the sheet 28, for example. The bearing arm 24 extends through the opening 32 and a concentric opening in the plate 28 to a clamping device 34. The clamping device consists of a first jaw 36 which is fixedly secured to a plate 38 of the frame of the drive member 12 and a second jaw 40th The jaws 36, 40 are tensioned against each other by two clamping screws, which are not shown here. For this purpose, openings are provided in the clamping jaws 36, 40, as indicated at 42 and 48, respectively. The jaws 36, 40 have semicircular shells with which they enclose the bearing arm 24 on opposite sides.

An der vorderen Kante 50 des Bleches 28 ist ein Blech 52 angebracht, das zu Darstellungszwecken in Fig. 2 als durchsichtig angenommen ist, im Gegensatz zu Fig. 3. Das Blech 38 weist eine Gewindebohrung 54 auf, an der das Hubgerüst 16 nach Fig. 1 angebracht ist.At the front edge 50 of the plate 28, a plate 52 is mounted, which for illustration purposes in Fig. 2 as transparent as opposed to FIG. 3 , The plate 38 has a threaded bore 54, on which the mast 16 after Fig. 1 is appropriate.

Wie insbesondere aus Fig. 2 zu erkennen, weist der Lagerarm 24 mehrere Ausnehmungen 56 auf, die exzentrisch zur Längsachse des Lagerarms 24 in Abständen angeordnet sind. Der Boden 58 der Ausnehmungen 56 ist annähernd vertikal. Im Lagerblock 30 ist eine Gewindebohrung 60 vorgesehen, die, wie in Fig. 4 gezeigt, eine Stellschraube 62 aufnimmt. Die Stellschraube 62 ist so angeordnet, daß sie mit der Ausnehmung 56 in Eingriff treten kann, insbesondere mit dem Boden 58, wie dies in Fig. 4 dargestellt ist. Durch Veränderung der Position der Stellschraube 62 ändert sich auch die Drehlage des Lagerarms 24 bei entsprechendem Drehmoment. Es wird erzeugt durch das Gewicht des Antriebsteils und des Lastteils 12, 16 auf die Radarme 18, wodurch ein entsprechendes Drehmoment auf die Lagerarme 24 aufgebracht wird. Auch wenn die Lagerarme 24 durch die Klemmvorrichtung 34 unverdrehbar befestigt sind, kann die Durchbiegung der Lagerarme 24 und ihre Torsion dazu führen, daß der Abstand der Radarme 18 vom Untergrund möglicherweise zu gering wird. Dieser Abstand ist in Fig. 1 mit y bezeichnet. Der Abstand der Lasträder 20 vom Untergrund ist mit x bezeichnet. Im gewünschten Fall sollen die Abstände x und y gleich groß sein. Wird der Abstand y jedoch zu klein, ist es möglich durch Verdrehen der Schraube 62 den beschriebenen Verformungen der Teile entgegenzuwirken und den möglicherweise zu geringen Abstand wieder zu vergrößern.As in particular from Fig. 2 To recognize the bearing arm 24 has a plurality of recesses 56 which are arranged eccentrically to the longitudinal axis of the bearing arm 24 at intervals. The bottom 58 of the recesses 56 is approximately vertical. In the bearing block 30, a threaded hole 60 is provided, which, as in Fig. 4 shown, a set screw 62 receives. The adjusting screw 62 is arranged so that it can engage with the recess 56, in particular with the bottom 58, as in Fig. 4 is shown. By changing the position of the adjusting screw 62, the rotational position of the bearing arm 24 also changes with the corresponding torque. It is generated by the weight of the drive part and the load part 12, 16 on the wheel arms 18, whereby a corresponding torque is applied to the bearing arms 24. Even if the bearing arms 24 are fixed non-rotatably by the clamping device 34, the deflection of the bearing arms 24 and their torsion can cause the distance of the wheel arms 18 from the ground may be too low. This distance is in Fig. 1 denoted by y. The distance of the load wheels 20 from the ground is denoted by x. In the desired case, the distances x and y should be the same size. However, if the distance y is too small, it is possible by turning the screw 62 to counteract the described deformations of the parts and to increase the possibly too small distance again.

Es versteht sich, daß diese Einstellung der Drehlage der Lagerarme 24 bei gelösten Klemmbacken 36, 40 erfolgt. Ist die gewünschte Verstellung erreicht, werden die Klemmbacken wieder angezogen, um die Drehlage der Lagerarme 24 zu fixieren.It is understood that this adjustment of the rotational position of the bearing arms 24 takes place when the jaws 36, 40 are released. Once the desired adjustment has been achieved, the clamping jaws are tightened again in order to fix the rotational position of the bearing arms 24.

Es ist zu erkennen, daß mit den beschriebenen Mitteln die Radarmweite auf einfache Weise geändert werden kann und auch möglich ist, mögliche Bodenabstandsverringerungen bei entsprechend großen Radarmweiten durch die beschriebene Verstellung der Lagerarme 24 zu verhindern.It can be seen that with the described means the Radarmweite can be easily changed and also possible, possible ground clearance reductions to prevent at correspondingly large Radarmweiten by the described adjustment of the bearing arms 24.

Claims (12)

  1. Ground conveyor with a drive part (12) with a frame, a load part, which is attached to the frame of the drive part (12) and with parallely distanced wheel arms (18), which are attached with their rear ends on the frame or the load part and each support a load-bearing wheel (20), characterized by means for changing the distance of the wheel arms (18), wherein a bearing arm (24) is fastened on the rear end of the wheel arms (18), which extends almost perpendicular to the wheel arm (18) and is received fittingly and moveably in at least one bearing opening (32) of the frame or the load part (16) and fixing means are provided on the frame or load part (16), with which the axial and pivot position of the bearing arms (24) can be releasably retained.
  2. Ground conveyor according to claim 1, characterized in that, at the load part, a load pickup means that can be actuated by a lifting device is guided in height.
  3. Ground conveyor according to claim 1 or 2, characterized in that the bearing arms (24) can be immobilized in different pivot positions with fixing means.
  4. Ground conveyor according to one of claims 1 through 3, characterized in that the immobilization of the bearing arms (24) takes place in the axial and/or pivot position by means of a clamping device (34).
  5. Ground conveyor according to one of claims 1 through 3, characterized in that the immobilization of the bearing arms takes place in the axial and/or pivot position by means of screw pins.
  6. Ground conveyor according to one of claims 1 through 3, characterized in that the immobilization of the bearing arms in its pivot position takes place with the help of a circumferential toothing on the bearing arms, which works together with a complementarily designed bearing opening.
  7. Ground conveyor according to one of claims 1 through 4, characterized in that the cross-section of the bearing arms is rectangular or otherwise polygonal.
  8. Ground conveyor according to one of claims 1 through 4, characterized in that the cross-section of the bearing arms (24) is circular.
  9. Ground conveyor according to one of claims 3 through 8, characterized in that the bearing arms (24) are seating in the bearing opening (32) in a pivotable manner when the fixing means are loosened, an adjustment device is provided, which engages eccentrically on the bearing arms (24) and causes or permits a restricted rotation of the bearing arms (24) when actuated.
  10. Ground conveyor according to claim 9, characterized in that the adjustment device is assigned to a bearing opening (32).
  11. Ground conveyor according to claim 10, characterized in that the bearing arms (24) have intermittent or an entirely eccentric, axially parallel running surface, with which the end of the adjustment screw (62) works in the frame or in the load part.
  12. Ground conveyor according to one of claims 4 through 11, characterized in that the clamping device (34) has two shells (36, 40), the first of which is fastened on the frame or load means and the second of which (40) can be fastened on the other shell by means of clamping screws.
EP07023312A 2006-12-16 2007-12-01 Industrial truck Active EP1932799B1 (en)

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DE102006059586A DE102006059586A1 (en) 2006-12-16 2006-12-16 Truck

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EP1932799A1 EP1932799A1 (en) 2008-06-18
EP1932799B1 true EP1932799B1 (en) 2011-03-16

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US (1) US8668053B2 (en)
EP (1) EP1932799B1 (en)
DE (2) DE102006059586A1 (en)
ES (1) ES2363724T3 (en)

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CN112141956B (en) * 2020-09-16 2022-02-11 中建材创新科技研究院有限公司 Positioning system and method of laser navigation forklift

Also Published As

Publication number Publication date
DE102006059586A1 (en) 2008-06-19
ES2363724T3 (en) 2011-08-12
EP1932799A1 (en) 2008-06-18
US20080142307A1 (en) 2008-06-19
DE502007006720D1 (en) 2011-04-28
US8668053B2 (en) 2014-03-11

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