EP1334948B1 - Load pick-up means - Google Patents

Load pick-up means Download PDF

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Publication number
EP1334948B1
EP1334948B1 EP03000908A EP03000908A EP1334948B1 EP 1334948 B1 EP1334948 B1 EP 1334948B1 EP 03000908 A EP03000908 A EP 03000908A EP 03000908 A EP03000908 A EP 03000908A EP 1334948 B1 EP1334948 B1 EP 1334948B1
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EP
European Patent Office
Prior art keywords
handling device
load handling
hook
load
securing element
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
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EP03000908A
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German (de)
French (fr)
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EP1334948A1 (en
Inventor
Arnold Dipl.-Kfm. Vetter
Christian Dipl.-Ing. Schreiber
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Vetter Umformtechnik GmbH
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Vetter Umformtechnik GmbH
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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
    • B66F9/075—Constructional features or details
    • B66F9/12—Platforms; Forks; Other load supporting or gripping members

Definitions

  • the invention relates to a load receiving means having a load receiving area and a suspension part according to the preamble of claim 1.
  • Load-handling devices are held on receiving conveyors on industrial trucks such as forklifts, stacker cranes, construction machinery or the like.
  • the load-receiving means may be formed for example by a pair of forks but also by individual forks, support pins or other supporting parts. In this case, the load-receiving means to be exchangeable on the recording medium and be kept adjustable with respect to their horizontal position.
  • the recording medium is typically designed according to ISO 2328 standard.
  • load-receiving means hooks are known, each of which can be fixed to a rear side of the suspension part of a load-receiving means, for example on a fork back, weldable about.
  • Such lifting hooks called forks in fork forks, are described for example in the - now withdrawn - standard DIN 15178.
  • Fork hooks have a recess in which a spring-loaded bolt on which a clamping lever is able to act is performed. The fork hook engages in the connecting position, the upper edge of the recording medium, called when using forks fork carriage, thereby wearing the respective fork tine.
  • the welded joint between fork hook and fork back must counteract the significant weight forces and the resulting torque.
  • the vertically standing bolt is acted upon by the spring after manual actuation of the clamping lever with a downward spring force, thereby to be able to engage in the respective groove of the fork carrier and thus as a detent securing against horizontal displacement of the forks.
  • the fork hook on an opening which must have a relatively large diameter in order to lead a correspondingly large-sized bolt can. Since the bolt must engage in a respective groove on the top of the fork carriage, the recess for the bolt is close to the fork back or the like region of the lifting device to which the hook-shaped holder is attached. In the area of the opening therefore no weld can be placed between the fork hook and the fork back.
  • the US 4,488,422 on the other hand discloses a load-receiving means, on which the hook is integrally formed by forging.
  • the hook must be processed by appropriate complex, cumbersome and expensive processing of the complete load-handling device in the hook area.
  • the DE-AS 1,283,153 discloses a generic load-carrying means with a welded hook.
  • the securing element passes through both the hook and the suspension part, that is also here after the hook has been welded to the suspension part, a processing of the entire load-carrying means must be carried out. This processing is complicated and expensive.
  • water can run through the hole introduced into the suspension part, which enters the area between the suspension part and the welded hook and here contributes to corrosion and weakening of the connection between hook and suspension part.
  • the invention has for its object to improve generic load handling equipment so that you have compatible with the conventional recording media load-carrying hooks, but in the connection between the load handling device and the load-carrying hooks the above-mentioned disadvantages are avoided and economic production is ensured ,
  • the at least underside continuous connection between the load-receiving means hook and the suspension part of the load-carrying means precisely improves the stability of the heavily loaded area.
  • a further improvement in stability results when an upper connection between the upper hook and the suspension of the lifting device is carried out continuously. Even greater strengths and a seal against water penetrating from the outside arise when the upper hook is completely peripherally welded to the load-carrying means. This is not only ensures a stress-optimized weld, and the upper hook itself has only low voltages.
  • a detent can be effected on the receiving carrier when the upper hook comprises a securing element for blocking on the receiving carrier. If this is the load receiving means facing away, he does not interfere with the connection process of the upper hook with the load receiving means, such as does not hinder the use of a welding device, such as a welding robot to put a weld through.
  • the securing element is designed as pivoting about a horizontal pivot axis pivoting lever, this can be moved by its weight in the engaging in the groove securing position.
  • a spring may additionally or alternatively be provided for effecting the pivoting in this position.
  • the pivot lever is then pressed in an orientation of the load receiving means on the receiving carrier without manual intervention in the next groove and locked there.
  • the pivot lever can also be set in an open position, and pivot from this open position only after reaching the final load receiving means position in the securing position.
  • a pivot lever for example, a movable on at least one inclined plane locking lever, which is movable from the side facing away from the suspension of the hook in the groove of the recording medium.
  • the locking lever is not in the range of the connection between the hook and suspension part, so that a welding of the hook according to the invention is ensured with the suspension part.
  • Fig. 1 is shown as a load-carrying means 1, a single fork, which includes a fork blade 2 and a perpendicular thereto 3 fork back.
  • an upper load-carrying means hook 4 and a lower load-receiving hook 5 is fixed.
  • the upper hook 4 is provided for spreading over a receiving carrier (not shown), for example a fork carrier according to ISO 2328, so as to hold the fork prong individually, in pairs or several times, or other load-bearing means 1 on the receiving carrier.
  • the lower hook 5 is provided for limiting the movement space of the load-carrying means 1 or, but can not support the weight of the load-carrying means 1 and the load held by these, due to its orientation shown here in normal operation.
  • the load is therefore completely intercepted via the upper hook 4. It acts on the connection between the hook 4 and the fork back 3 due to the weight of the load receiving means 1 and due to its loading in addition to a torque which tends to pivot the load receiving means 1 in the direction of the arrow 6 is essentially a torque which is striving to pivot the hook 4 in the direction of the arrow 6 '. These moments are directed to try to release the hook 4 from the fork back 3. Corresponding stability requirements are to be placed on the weld seams of the hook 4, in particular in the region of the lower, most stressed compound 7.
  • connection 7 is formed as a continuous weld.
  • the upper connection 8 of the hook 4 is additionally provided on the fork back 3 as a continuous weld.
  • Both welds 7, 8 can cost, for example, with the help of welding robots, are laid.
  • the accessibility is not affected by a bolt or similar securing means.
  • the welder can thus weld said welds 7, 8 respectively without settling, which has a positive effect on the quality of the weld and on the tension in the weld, but also in the hook 4.
  • a tightness against penetrating from above moisture is achieved.
  • vertical connections 9, 10 may each be formed as line-like welds between the hook 4 and the fork back 3.
  • all connections 7 to 10 can be made continuously and without interruption by a welding process, which results in welding advantages and particularly voltage-optimized conditions.
  • such a circumferential weld is tight against water penetration.
  • a securing element 11 is provided in the form of a pivot lever ( Fig. 8 ). This is pivotable on the upper hook 4 about a horizontal pivot axis 12 such that it can engage with its free, the pivot axis 12 spaced end 13 in the groove of the recording medium.
  • the intervention can be carried out by the weight, or be favored by a supporting spring, so that the pivot lever passes without manual intervention in the securing position.
  • This in contrast to the manually operable bolt according to the above-mentioned prior art, ensures that the engagement of the displacement-blocking element is actually performed.
  • a permanent open position may additionally be provided. Then a manual release of the permanent open position is required for fixation.
  • FIG. 9 shows a further embodiment of a fuse element 11 '.
  • the detent lever shown here has two obliquely arranged oblong holes 14, each receiving guide pins 15. This can be the fuse element Move 11 'on inclined planes such that the locking claw 16' from a groove of the recording medium superimposed upwards and away from the fork back 3 moves.
  • FIG. 10 shows a fuse element 11 "whose latching claw 16" at the end of the upper load-receiving hook 4 rotatably mounted shaft 17 is arranged and which is movable by rotating the shaft 17 in one of the groove of the recording medium and can be locked in this position.
  • FIG. 11 shows a securing element 11 '' whose raised and lowered pin 18 is articulated to a crank disc 19.
  • the crank disc 19 is at the same time the locking claw 16 '' connected so that this by a raising or lowering movement of the bolt 18 in a groove of the receiving carrier can be moved in or out.
  • a load-carrying means 1 with one or more tines or other support means may be part of an industrial truck as a whole, such as a forklift or the like.

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Fats And Perfumes (AREA)

Abstract

The load-bearing system e.g. the tines of a forklift truck, has an upper load-bearing hook (4) which grips behind part of the holder carrier when fitted. The upper hook has an unbroken bond (7) at the load carrier, at least at the under side, and an unbroken bond (8) at the suspension part of the load carrier at the upper side. The edges (7-10) of the hook lie against the back (3) of the forklift tine. The side of the hook, away from the tine, has a locking unit (11) to prevent slipping, as a swing lever on a horizontal axis (12).

Description

LastaufnahmemittelLoad handling devices

Die Erfindung betrifft ein Lastaufnahmemittel mit einem Lastaufnahmebereich sowie einem Aufhängeteil nach dem Oberbegriff des Anspruchs 1.The invention relates to a load receiving means having a load receiving area and a suspension part according to the preamble of claim 1.

Lastaufnahmemittel werden über Aufnahmeträger an Flurförderzeugen etwa Gabelstaplern, Regalbediengeräten, Baumaschinen oder ähnlichem gehalten. Die Lastaufnahmemittel können beispielsweise durch ein Paar von Gabelzinken aber auch durch einzelne Gabelzinken, Tragdorne oder andere Tragteile gebildet sein. Dabei sollen die Lastaufnahmemittel an dem Aufnahmeträger auswechselbar und bezüglich ihrer horizontalen Lage einstellbar gehalten sein. Der Aufnahmeträger ist typischerweise nach der Norm ISO 2328 ausgebildet.Load-handling devices are held on receiving conveyors on industrial trucks such as forklifts, stacker cranes, construction machinery or the like. The load-receiving means may be formed for example by a pair of forks but also by individual forks, support pins or other supporting parts. In this case, the load-receiving means to be exchangeable on the recording medium and be kept adjustable with respect to their horizontal position. The recording medium is typically designed according to ISO 2328 standard.

Um das Lastaufnahmemittel mit dem Aufnahmeträger lösbar verbinden zu können, sind Lastaufnahmemittel- Haken bekannt, die jeweils an einer Rückseite des Aufhängeteils eines Lastaufnahmemittels, beispielsweise an einem Gabelrücken, festlegbar, etwa anschweißbar, sind. Derartige Lastaufnahmemittel- Haken, bei Gabelzinken Gabelhaken genannt, sind beispielsweise in der - inzwischen zurückgezogenen - Norm DIN 15178 beschrieben. Gabelhaken weisen eine Ausnehmung auf, in der ein federbeaufschlagter Bolzen, auf den ein Spannhebel einzuwirken vermag geführt ist. Der Gabelhaken hintergreift in Verbindungsstellung die Oberkante des Aufnahmeträgers, bei Verwendung von Gabelzinken Gabelträger genannt, um dadurch die jeweilige Gabelzinke zu tragen. Die Schweißverbindung zwischen Gabelhaken und Gabelrücken muß dabei den erheblichen Gewichtskräften und den daraus resultierenden Drehmomenten entgegenwirken.In order to connect the load-carrying means releasably to the receiving carrier, load-receiving means hooks are known, each of which can be fixed to a rear side of the suspension part of a load-receiving means, for example on a fork back, weldable about. Such lifting hooks, called forks in fork forks, are described for example in the - now withdrawn - standard DIN 15178. Fork hooks have a recess in which a spring-loaded bolt on which a clamping lever is able to act is performed. The fork hook engages in the connecting position, the upper edge of the recording medium, called when using forks fork carriage, thereby wearing the respective fork tine. The welded joint between fork hook and fork back must counteract the significant weight forces and the resulting torque.

Der vertikal stehende Bolzen wird durch die Feder nach manuellem Betätigen des Spannhebels mit einer abwärtsweisenden Federkraft beaufschlagt, um dadurch in die jeweilige Nut des Gabelträgers eingreifen zu können und somit als Arretierung eine Sicherung gegen ein horizontales Verschieben der Gabelzinken zu bilden. Für diesen Bolzen weist der Gabelhaken eine Durchbrechung auf, die einen relativ großen Durchmesser haben muß, um einen entsprechend großdimensionierten Bolzen führen zu können. Da der Bolzen in eine jeweilige Nut auf der Oberseite des Gabelträgers eingreifen muß, liegt die Ausnehmung für den Bolzen nahe am Gabelrücken oder dergleichen Bereich des Lastaufnahmemittels, an dem die hakenförmige Halterung befestigt ist. Im Bereich der Durchbrechung kann daher zwischen dem Gabelhaken und dem Gabelrücken keine Schweißnaht gelegt werden. Die obere und untere Schweißnaht zwischen dem Gabelhaken und dem Gabelrücken ist somit aufgrund der Durchbrechung unterbrochen, wodurch sich Spannungsspitzen in der Schweißverbindung ergeben. Damit ist diese hochbelastete Verbindung jedoch nicht in der wünschenswerten und an sich nach der Dimensionierung der Halterung möglichen Stabilität an dem Gabelrücken ausgebildet. An den jeweiligen Ansatzstellen der Schweißnähte, die an die Ausnehmung angrenzen, kommt es zu den erwähnten Spannungsspitzen, die bei entsprechenden dynamischen Belastungen zu einem Abreißen der Halterungen führen können. Zudem kann an dieser Stelle Wasser in den Zwischenraum zwischen Gabelrücken und Halterung eindringen, was Korrosion und Spaltkorrosion fördert. Hinzu kommt, dass der Anfang und das Ende von Schweißnähten durch Zündfehler, Ansatzfehler, Endkrater, Endkraterrisse usw. häufig fehlerbehafter sind als fortlaufende, durchgehende Schweißnähte. Durch ein jeweils neues Positionieren des Schweißkopfes im Zuge von Schweißunterbrechungen ergibt sich zudem ein höherer Zeitbedarf.The vertically standing bolt is acted upon by the spring after manual actuation of the clamping lever with a downward spring force, thereby to be able to engage in the respective groove of the fork carrier and thus as a detent securing against horizontal displacement of the forks. For this bolt, the fork hook on an opening, which must have a relatively large diameter in order to lead a correspondingly large-sized bolt can. Since the bolt must engage in a respective groove on the top of the fork carriage, the recess for the bolt is close to the fork back or the like region of the lifting device to which the hook-shaped holder is attached. In the area of the opening therefore no weld can be placed between the fork hook and the fork back. The upper and lower weld between the fork hook and the fork back is thus interrupted due to the opening, resulting in voltage peaks in the weld. However, this highly stressed compound is not formed in the desirable and in itself after the dimensioning of the holder possible stability to the fork back. At the respective attachment points of the welds, which adjoin the recess, there are the mentioned voltage spikes, which can lead to tearing off of the holders at corresponding dynamic loads. In addition, water can penetrate into the space between the fork back and bracket at this point, which promotes corrosion and crevice corrosion. In addition, the beginning and end of welds due to ignition defects, neck defects, end craters, end crater cracks, etc., are often more prone to defects than continuous, continuous welds. Each time a new positioning of the welding head in the course of welding interruptions results in a higher time requirement.

Durch die DE 33 01 756 A1 gehört schon eine Gabelzinke für Stapler zum Stand der Technik, bei der die Gabelhaken mit einer durchgehenden Schweißnaht am Aufhängeteil der Gabelzinke befestigt ist. Um eine derartige Befestigung zu gewährleisten bedarf es jedoch Adapter oder aber speziell am Gabelhaken angeordneter Füße, oder aber der Bearbeitung des Aufhängetells des Gebelhakens derart, dass Ausnehmungen vorzusehen sind. Derart gestaltete Verbindungen zwischen Gabelhaken und Gabelzinke sind aufwendig und teuer.By the DE 33 01 756 A1 already belongs to a fork for forklifts to the prior art, in which the fork hooks is attached with a continuous weld on the suspension part of the fork. However, in order to ensure such an attachment, adapters or else feet arranged especially at the fork hook or else the processing of the suspension hook of the charging hook are required in such a way that recesses are provided. Such designed connections between fork hook and fork tine are expensive and expensive.

Die US 4,488,422 offenbart dagegen ein Lastaufnahmemittel, an dem der Haken einstückig durch Schmieden angeformt ist. Hier muss der Haken durch entsprechende aufwendige, umständliche und teure Bearbeitung des kompletten Lastaufnahmemittels im Hakenbereich bearbeitet werden.The US 4,488,422 on the other hand discloses a load-receiving means, on which the hook is integrally formed by forging. Here, the hook must be processed by appropriate complex, cumbersome and expensive processing of the complete load-handling device in the hook area.

Die DE-AS 1 283 153 offenbart ein gattungsgemäßes Lastaufnahmemittel mit einem angeschweißten Haken. Hier durchgreift jedoch das Sicherungselement sowohl den Haken als auch den Aufhängeteil, d. h. auch hier muss nachdem der Haken an das Aufhängeteil angeschweißt worden ist eine Bearbeitung des gesamten Lastaufnahmemittels erfolgen. Diese Bearbeitung ist aufwendig und teuer. Hinzu kommt, dass durch die in den Aufhängeteil eingebrachte Bohrung Wasser laufen kann, welches in den Bereich zwischen Aufhängeteil und angeschweißtem Haken gelangt und hier zu Korrosion und Schwächung der Verbindung zwischen Haken und Aufhängeteil beiträgt.The DE-AS 1,283,153 discloses a generic load-carrying means with a welded hook. Here, however, the securing element passes through both the hook and the suspension part, that is also here after the hook has been welded to the suspension part, a processing of the entire load-carrying means must be carried out. This processing is complicated and expensive. In addition, water can run through the hole introduced into the suspension part, which enters the area between the suspension part and the welded hook and here contributes to corrosion and weakening of the connection between hook and suspension part.

Der Erfindung liegt die Aufgabe zugrunde, gattungsgemäße Lastaufnahmemittel so zu verbessern, dass Sie mit den herkömmlichen Aufnahmeträgern kompatible Lastaufnahmemittel- Haken aufweisen, wobei jedoch bei der Verbindung zwischen dem Lastaufnahmemittel und dem Lastaufnahmemittel-Haken die oben genannten Nachteile vermieden sind und eine wirtschaftliche Herstellung gewährleistet ist.The invention has for its object to improve generic load handling equipment so that you have compatible with the conventional recording media load-carrying hooks, but in the connection between the load handling device and the load-carrying hooks the above-mentioned disadvantages are avoided and economic production is ensured ,

Die Erfindung löst dieses Problem durch ein Lastaufnahmemittel mit den Merkmalen des Anspruchs 1. Hinsichtlich vorteilhafter Ausgestaltungen wird auf die Ansprüche 2 bis 13 verwiesen.The invention solves this problem by a load handling device with the features of claim 1. With regard to advantageous embodiments, reference is made to the claims 2 to 13.

Erfindungsgemäß ist mit der zumindest unterseitig durchgehenden Verbindung zwischen dem Lastaufnahmemittel- Haken und dem Aufhängeteil des, Lastaufnahmemittels gerade der höchstbelastete Bereich in seiner Stabilität deutlich verbessert.According to the invention, the at least underside continuous connection between the load-receiving means hook and the suspension part of the load-carrying means precisely improves the stability of the heavily loaded area.

Eine weitere Stabilitätsverbesserung ergibt sich, wenn auch eine obere Verbindung zwischen dem oberen Haken und dem Aufhängetell des Lastaufnahmemittels durchgehend ausgeführt ist. Noch größere Festigkeiten und eine Abdichtung gegen von außen eindringendes Wasser ergeben sich, wenn der obere Haken vollständig umlaufend mit dem Lastaufnahmemittel verschweißt ist. Dadurch ist nicht nur eine spannungsoptimierte Schweißnaht gewährleistet, auch der obere Haken selbst weist nur geringe Spannungen auf.A further improvement in stability results when an upper connection between the upper hook and the suspension of the lifting device is carried out continuously. Even greater strengths and a seal against water penetrating from the outside arise when the upper hook is completely peripherally welded to the load-carrying means. This is not only ensures a stress-optimized weld, and the upper hook itself has only low voltages.

Trotz des Verzichts auf die, die obere und untere Schweißnaht unterbrechende Ausnehmung kann eine Arretierung an dem Aufnahmeträger bewirkt werden, wenn der obere Haken ein Sicherungselement zur Blockierung an dem Aufnahmeträger umfaßt. Wenn dieser dem Lastaufnahmemittel abgewandt ist, stört er den Verbindungsvorgang des oberen Haken mit dem Lastaufnahmemittel nicht, behindert etwa nicht den Einsatz eines Schweißgerätes, beispielsweise eines Schweißroboters, um eine Schweißnaht durchgehend zu legen.Despite the omission of the upper and lower weld interrupting recess, a detent can be effected on the receiving carrier when the upper hook comprises a securing element for blocking on the receiving carrier. If this is the load receiving means facing away, he does not interfere with the connection process of the upper hook with the load receiving means, such as does not hinder the use of a welding device, such as a welding robot to put a weld through.

Wenn besonders vorteilhaft das Sicherungselement als um eine horizontale Schwenkachse schwenkender Schwenkhebel ausgebildet ist, kann dieser durch seine Gewichtskraft in die in die Nute eingreifende Sicherungsstellung bewegt werden. Eine Feder kann zusätzlich oder alternativ zur Bewirkung des Schwenkens in diese Stellung vorgesehen sein. Der Schwenkhebel wird dann bei einer Ausrichtung des Lastaufnahmemittels an dem Aufnahmeträger ohne manuellen Eingriff in die jeweils nächste Nut eingedrückt und dort arretiert. Alternativ läßt sich der Schwenkhebel auch in einer Offenstellung festlegen, und aus dieser Offenstellung erst nach Erreichen der endgültigen Lastaufnahmemittelposition in die Sicherungsstellung verschwenken.If particularly advantageous the securing element is designed as pivoting about a horizontal pivot axis pivoting lever, this can be moved by its weight in the engaging in the groove securing position. A spring may additionally or alternatively be provided for effecting the pivoting in this position. The pivot lever is then pressed in an orientation of the load receiving means on the receiving carrier without manual intervention in the next groove and locked there. Alternatively, the pivot lever can also be set in an open position, and pivot from this open position only after reaching the final load receiving means position in the securing position.

Anstelle eines Schwenkhebels läßt sich beispielsweise ein auf mindestens einer schiefen Ebene verfahrbarer Rasthebel einsetzen, welcher von der dem Aufhängeteil abgewandten Seite des Hakens in die Nut des Aufnahmeträgers bewegbar ist. Der Rasthebel liegt dabei nicht im Bereich der Verbindung zwischen Haken und Aufhängeteil, so daß eine erfindungsgemäße Verschweißung des Hakens mit den Aufhängeteil gewährleistet ist.Instead of a pivot lever can be used, for example, a movable on at least one inclined plane locking lever, which is movable from the side facing away from the suspension of the hook in the groove of the recording medium. The locking lever is not in the range of the connection between the hook and suspension part, so that a welding of the hook according to the invention is ensured with the suspension part.

Weitere Vorteile und Merkmale der Erfindung ergeben sich aus einem in der Zeichnung dargestellten und nachfolgend beschriebenen Ausführungsbeispiel des Gegenstandes der Erfindung.Further advantages and features of the invention will become apparent from an illustrated in the drawing and described below embodiment of the subject invention.

In der Zeichnung zeigt:In the drawing shows:

Fig. 1Fig. 1
eine perspektivische Ansicht eines als Gabelzinke ausgebildeten-Lastaufnahmemittels mit oberem und unterem Gabelhaken,a perspective view of a trained as a fork-lifting device with upper and lower fork hook,
Fig. 2Fig. 2
eine vergrößerte Ansicht des Details I in Fig. 1,an enlarged view of the detail I in Fig. 1 .
Fig. 3Fig. 3
eine Ansicht auf den Gabelrücken im Bereich des oberen Gabelhakens,a view of the fork back in the region of the upper fork hook,
Fig. 4Fig. 4
eine Seitenansicht auf den Gabelrücken mit dem oberen Gabelhaken bei geschlossenem Schwenkhebel,a side view of the fork back with the upper fork hook with the pivot lever closed,
Fig. 5Fig. 5
eine ähnliche Ansicht wie Fig. 4 bei geöffnetem Schwenkhebel,a similar view as Fig. 4 with open pivoting lever,
Fig. 6Fig. 6
eine Ansicht von oben auf Gabelrücken und Gabelhaken,a view from above on fork back and fork hook,
Fig. 7Fig. 7
eine Ansicht von unten auf den Gabelhaken bei geschlossenem Schwenkhebel,a view from below on the fork hook with the pivot lever closed,
Fig. 8Fig. 8
den Schwenkhebel in perspektivischer Einzelteilansicht,the pivot lever in perspective item view,
Fig. 9Fig. 9
eine erste Alternativlösung für einen Rasthebel,a first alternative solution for a locking lever,
Fig. 10Fig. 10
eine zweite Alternativlösung für einen Rasthebel, unda second alternative solution for a locking lever, and
Fig. 11Fig. 11
eine dritte Alternativlösung für einen Rasthebel.a third alternative solution for a locking lever.

In Fig. 1 ist als Lastaufnahmemittel 1 eine einzelne Gabelzinke dargestellt, die ein Gabelblatt 2 und einen hierzu senkrecht stehenden Gabelrücken 3 umfaßt. An diesem ist ein oberer Lastaufnahmemittel- Haken 4 und ein unterer Lastaufnahmemittel- Haken 5 fest angeordnet. Der obere Haken 4 ist zum Übergreifen eines Aufnahmeträgers (nicht dargestellt), beispielsweise eines Gabelträgers nach der ISO 2328, vorgesehen, um somit die Gabelzinke einzeln, paarweise oder mehrfach, oder aber andere Lastaufnahmemittel 1 an dem Aufnahmeträger zu halten. Der untere Haken 5 ist zur Begrenzung des Bewegungsraums des oder der Lastaufnahmemittel 1 vorgesehen, kann aber aufgrund seiner hier im Normalbetrieb gezeigten Orientierung keine Abstützung der Gewichtskraft des oder der Lastaufnahmemittel 1 und der von diesen gehaltenen Last ausbilden. Die Last wird daher vollständig über den oberen Haken 4 abgefangen. Dabei wirkt auf die Verbindung zwischen dem Haken 4 und dem Gabelrücken 3 bedingt durch das Gewicht des Lastaufnahmemittels 1 und bedingt durch dessen Beladung neben einem Drehmoment, das bestrebt ist, das Lastaufnahmemittel 1 in Richtung des Pfeils 6 zu verschwenken im Wesentlichen ein Drehmoment das bestrebt ist, den Haken 4 in Richtung des Pfeils 6' zu verschwenken. Diese Momente sind so gerichtet, daß sie versuchen, den Haken 4 vom Gabelrücken 3 zu lösen. Entsprechende Stabilitätsanforderungen sind an die Schweißnähte des Hakens 4, insbesondere im Bereich der unteren , am stärksten beanspruchten Verbindung 7, zu stellen.In Fig. 1 is shown as a load-carrying means 1, a single fork, which includes a fork blade 2 and a perpendicular thereto 3 fork back. At this an upper load-carrying means hook 4 and a lower load-receiving hook 5 is fixed. The upper hook 4 is provided for spreading over a receiving carrier (not shown), for example a fork carrier according to ISO 2328, so as to hold the fork prong individually, in pairs or several times, or other load-bearing means 1 on the receiving carrier. The lower hook 5 is provided for limiting the movement space of the load-carrying means 1 or, but can not support the weight of the load-carrying means 1 and the load held by these, due to its orientation shown here in normal operation. The load is therefore completely intercepted via the upper hook 4. It acts on the connection between the hook 4 and the fork back 3 due to the weight of the load receiving means 1 and due to its loading in addition to a torque which tends to pivot the load receiving means 1 in the direction of the arrow 6 is essentially a torque which is striving to pivot the hook 4 in the direction of the arrow 6 '. These moments are directed to try to release the hook 4 from the fork back 3. Corresponding stability requirements are to be placed on the weld seams of the hook 4, in particular in the region of the lower, most stressed compound 7.

Erfindungsgemäß wird diesen Ansprüchen dadurch Rechnung getragen, daß die Verbindung 7 als durchgehende Schweißnaht ausgebildet ist. Im Ausführungsbeispiel ist zusätzlich auch die obere Verbindung 8 des Hakens 4 am Gabelrücken 3 als durchgehende Schweißnaht vorgesehen. Beide Schweißnähte 7, 8 können kostengünstig, beispielsweise auch mit Hilfe von Schweißrobotern, gelegt werden. Die Zugänglichkeit ist durch keinen Bolzen oder ähnliches Sicherungsmittel beeinträchtigt. Der Schweißer kann die genannten Schweißnähte 7, 8 somit jeweils ohne abzusetzen legen, was sich auf die Qualität der Schweißnaht und auf die Spannung in der Schweißnaht, aber auch im Haken 4 positiv auswirkt. Damit ist auch eine Dichtigkeit gegen von oben eindringende Feuchtigkeit erreicht.According to the invention, these claims are taken into account that the connection 7 is formed as a continuous weld. In the embodiment, the upper connection 8 of the hook 4 is additionally provided on the fork back 3 as a continuous weld. Both welds 7, 8 can cost, for example, with the help of welding robots, are laid. The accessibility is not affected by a bolt or similar securing means. The welder can thus weld said welds 7, 8 respectively without settling, which has a positive effect on the quality of the weld and on the tension in the weld, but also in the hook 4. Thus, a tightness against penetrating from above moisture is achieved.

Zusätzlich können zwischen dem Haken 4 und dem Gabelrücken 3 auch vertikale Verbindungen 9, 10 jeweils als linienhafte Schweißnähte ausgebildet sein. Dabei können durch einen Schweißvorgang alle Verbindungen 7 bis 10 durchgehend und unterbrechnungsfrei gefertigt werden, wodurch sich schweißtechnische Vorteile und besonders spannungsoptimierte Verhältnisse ergeben. Hinzu kommt, daß eine derartige umlaufende Schweißnaht dicht gegen eindringendes Wasser ist.In addition, vertical connections 9, 10 may each be formed as line-like welds between the hook 4 and the fork back 3. In this case, all connections 7 to 10 can be made continuously and without interruption by a welding process, which results in welding advantages and particularly voltage-optimized conditions. In addition, such a circumferential weld is tight against water penetration.

Um das oder die Lastaufnahmemittel 1 an dem Aufnahmeträger gegen eine Horizontalverschiebung zu sichern, ist ein Sicherungselement 11 in Gestalt eines Schwenkhebels vorgesehen (Fig. 8). Dieser ist an dem oberen Haken 4 um eine horizontale Schwenkachse 12 derart schwenkbar, daß er mit seinem freien, der Schwenkachse 12 beabstandeten Ende 13 in Nute des Aufnahmeträgers eingreifen kann. Der Eingriff kann durch die Gewichtskraft erfolgen, oder durch eine unterstützende Feder begünstigt sein, so daß der Schwenkhebel ohne manuelles Zutun in die Sicherungsstellung gelangt. Dies stellt im Unterschied zum manuell bedienbaren Bolzen gemäß dem oben angeführten Stand der Technik sicher, daß das Einrasten des die Verschiebung blockierenden Elements tatsächlich vorgenommen wird. Um eine Justierung des horizontal verschieblichen Lastaufnahmemittels 1 an dem Aufnahmeträger zu gewährleisten, kann zusätzlich eine Dauer-Offenstellung vorgesehen sein. Dann ist ein manuelles Lösen der Daueroffenstellung zur Fixierung erforderlich.In order to secure the one or more load-bearing means 1 on the recording medium against a horizontal displacement, a securing element 11 is provided in the form of a pivot lever ( Fig. 8 ). This is pivotable on the upper hook 4 about a horizontal pivot axis 12 such that it can engage with its free, the pivot axis 12 spaced end 13 in the groove of the recording medium. The intervention can be carried out by the weight, or be favored by a supporting spring, so that the pivot lever passes without manual intervention in the securing position. This, in contrast to the manually operable bolt according to the above-mentioned prior art, ensures that the engagement of the displacement-blocking element is actually performed. In order to ensure an adjustment of the horizontally displaceable load-receiving means 1 on the recording medium, a permanent open position may additionally be provided. Then a manual release of the permanent open position is required for fixation.

Die Figur 9 zeigt eine weitere Ausgestaltung eines Sicherungselementes 11'. Der hier gezeigte Rasthebel weist zwei schräg angeordnete Langlöcher 14 auf, die jeweils Führungsbolzen 15 aufnehmen. Damit läßt sich das Sicherungselement 11' auf schiefen Ebenen derart verschieben, dass sich die Rastklaue 16' aus einer Nut des Aufnahmeträgers überlagert nach oben und vom Gabelrücken 3 fort bewegt.The FIG. 9 shows a further embodiment of a fuse element 11 '. The detent lever shown here has two obliquely arranged oblong holes 14, each receiving guide pins 15. This can be the fuse element Move 11 'on inclined planes such that the locking claw 16' from a groove of the recording medium superimposed upwards and away from the fork back 3 moves.

Figur 10 zeigt ein Sicherungselement 11" dessen Rastklaue 16" am Ende einer am oberen Lastaufnahmemittel- Haken 4 drehbar gelagerten Welle 17 angeordnet ist und die durch Drehen der Welle 17 in eine der Nute des Aufnahmeträgers bewegbar und in dieser Stellung arretierbar ist. FIG. 10 shows a fuse element 11 "whose latching claw 16" at the end of the upper load-receiving hook 4 rotatably mounted shaft 17 is arranged and which is movable by rotating the shaft 17 in one of the groove of the recording medium and can be locked in this position.

Figur 11 zeigt ein Sicherungselement 11"' deren heb- und senkbarer Bolzen 18 an einer Kurbelscheibe 19 angelenkt ist. Mit der Kurbelscheibe 19 ist gleichzeitig die Rastklaue 16"' verbunden, so dass diese durch eine Heb- oder Senkbewegung des Bolzens 18 in eine Nut des Aufnahmeträgers ein- bzw. ausfahrbar ist. FIG. 11 shows a securing element 11 '' whose raised and lowered pin 18 is articulated to a crank disc 19. The crank disc 19 is at the same time the locking claw 16 '' connected so that this by a raising or lowering movement of the bolt 18 in a groove of the receiving carrier can be moved in or out.

Ein Lastaufnahmemittel 1 mit einem oder mehreren Zinken oder anderen Tragmitteln kann insgesamt Bestandteil eines Flurförderzeugs sein, etwa eines Gabelstaplers oder dergleichen.A load-carrying means 1 with one or more tines or other support means may be part of an industrial truck as a whole, such as a forklift or the like.

Bezugszeichenliste:LIST OF REFERENCE NUMBERS

11
Lastaufnahmemittel,Lifting accessories,
22
Gabelblatt,Fork blade,
33
Gabelrücken,Fork face,
44
oberer Lastaufnahmemittel- Haken,upper load-carrying hook,
55
unterer Lastaufnahmemittel- Haken,lower load-carrying hooks,
66
Pfeile,arrows,
77
untere Verbindung,lower connection,
88th
obere Verbindung,upper connection,
99
vertikale Verbindung,vertical connection,
1010
vertikale Verbindung,vertical connection,
1111
Sicherungselement,Fuse element,
1212
Schwenkachse,Pivot axis
1313
freies Ende des Sicherungselements,free end of the fuse element,
1414
LanglochLong hole
1515
Führungsbolzenguide pins
1616
Rastklauerelease tab
1717
Wellewave
1818
Bolzenbolt
1919
Kurbelscheibecrank

Claims (15)

  1. A load handling device (1) having a load handling area and a suspension part on which at least one upper load handling device hook (4) is welded, which engages below a part of a receptacle support in the mounted position and which has a securing element (11), which is capable of blocking a displacement of the hook (4) and the load handling device (1) connected thereto on the receptacle support,
    characterized in that
    the securing element (11) is situated on the side of the upper hook (4) facing away from the load handling device (1), and the upper hook (4) is fixed directly on the suspension part of the load handling device (1) at least on the top and bottom by an interruption-free welded bond (7).
  2. The load handling device according to Claim 1,
    characterized in that
    the upper hook (4) is fixed peripherally (7; 8; 9; 10) on the suspension part of the load handling device (1).
  3. The load handling device according to Claim 1 or 2,
    characterized in that
    the load handling device (1) comprises at least one fork prong.
  4. The load handling device according to one of Claims 1 through 3,
    characterized in that
    the upper hook (4) is placed on a planar component of the particular fork back (3).
  5. The load handling device according to one of Claims 1 through 4,
    characterized in that
    the securing element (11) is implemented as a pivot lever, which engages in a groove of the receptacle support in the securing position.
  6. The load handling device according to Claim 5,
    characterized in that
    the securing element (11) is pivotable around a horizontal pivot axis (12) in the mounted position and is pivoted into its securing position by its weight force.
  7. The load handling device according to one of Claims 1 through 4,
    characterized in that
    the securing element (11') is implemented on a catch lever having a catch claw (16'), which is movable on at least one inclined plane.
  8. The load handling device according to one of Claims 1 through 4,
    characterized in that
    the securing element (11") is implemented as a rotatable shaft (17), whose catch claw (16'') is rotatable by rotation of the shaft (17) into a groove of the receptacle support.
  9. The load handling device according to one of Claims 1 through 4,
    characterized in that
    the securing element (11"') is implemented as a pin (18), which may be raised and lowered, and the catch claw (16"') is movable via a crank disk (19) into a groove of the receptacle support.
  10. The load handling device according to one of Claims 1 through 4,
    characterized in that
    the securing element is implemented as helical and can be screwed into a groove of the receptacle support.
  11. The load handling device according to one of Claims 5 through 10,
    characterized in that
    the securing element (11, 11', 11", 11"') engages positively in a groove of the receptacle support in the securing position.
  12. The load handling device according to Claim 11,
    characterized in that
    the securing element (11, 11', 11", 11"') is capable of engaging in various of the grooves of the receptacle support, which are situated adjacent to one another, depending on the location of the load receiving device(s) (1).
  13. The load handling device according to one of Claims 5 to 12,
    characterized in that
    the securing element (11, 11', 11", 11"') is springloaded.
  14. The load handling device according to one of Claims 5 to 13,
    characterized in that
    the securing element (11, 11', 11", 11"') can be fixed in the open position.
  15. The load handling device according to one of Claims 1 through 14,
    characterized in that
    multiple load handling device hooks, preferably an upper and a lower load handling device hook, are situated on the suspension part.
EP03000908A 2002-02-07 2003-01-16 Load pick-up means Expired - Lifetime EP1334948B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10205141A DE10205141A1 (en) 2002-02-07 2002-02-07 Load handling devices
DE10205141 2002-02-07

Publications (2)

Publication Number Publication Date
EP1334948A1 EP1334948A1 (en) 2003-08-13
EP1334948B1 true EP1334948B1 (en) 2009-10-07

Family

ID=27588480

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03000908A Expired - Lifetime EP1334948B1 (en) 2002-02-07 2003-01-16 Load pick-up means

Country Status (5)

Country Link
EP (1) EP1334948B1 (en)
AT (1) ATE444935T1 (en)
CA (1) CA2416235A1 (en)
DE (2) DE10205141A1 (en)
ES (1) ES2333785T3 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2592042A1 (en) * 2011-11-11 2013-05-15 Vetter Umformtechnik GmbH Carrier device for load bearer and adapter for carrier device
FR3014092B1 (en) * 2013-12-03 2017-05-26 Benoit Pierre Andre Gobard FAST ATTACHING DEVICE FOR HANDLING OR LOADING MACHINES
US10815105B2 (en) * 2018-06-15 2020-10-27 Arrow Acquisition, Llc Quick connect system for industrial and construction equipment

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2975924A (en) * 1959-06-25 1961-03-21 Dyson & Sons Adjustable lift fork mounting
DE1283153B (en) * 1965-11-12 1968-11-14 Heinz Schmidt Dipl Ing Loader with side-shifting forks
US3528580A (en) * 1967-12-08 1970-09-15 Eaton Yale & Towne Lift truck carriage and fork therefor
DE2037664A1 (en) * 1970-07-29 1972-02-03 Linde Ag, 6200 Wiesbaden Fork tines for forklift trucks
GB1315865A (en) * 1970-10-26 1973-05-02 Lansing Bagnall Ltd Lifting carriages for fork lift trucks
US4125199A (en) * 1973-04-09 1978-11-14 Linde Aktiengesellschaft Lateral-shift device for fork-lift vehicles
US4488422A (en) * 1978-03-23 1984-12-18 Jos. Dyson And Sons, Inc. Method of making forks for fork lift trucks
DE8301435U1 (en) * 1983-01-20 1983-05-19 Arnold Vetter Kg, 5900 Siegen, De FORK FORK FOR STACKER
DE8704699U1 (en) * 1987-03-30 1987-05-27 Arnold Vetter KG, 57080 Siegen Carrying device especially for forklifts
IT1223004B (en) * 1987-10-28 1990-09-12 Meccaniche Bolzoni Spa Costruz FORK UNITS FOR FORKLIFTS

Also Published As

Publication number Publication date
ES2333785T3 (en) 2010-03-01
DE50311987D1 (en) 2009-11-19
EP1334948A1 (en) 2003-08-13
ATE444935T1 (en) 2009-10-15
CA2416235A1 (en) 2003-08-07
DE10205141A1 (en) 2003-08-28

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