EP4190740A1 - Lifting mast for an industrial truck with two load-carrying means - Google Patents
Lifting mast for an industrial truck with two load-carrying means Download PDFInfo
- Publication number
- EP4190740A1 EP4190740A1 EP22210365.7A EP22210365A EP4190740A1 EP 4190740 A1 EP4190740 A1 EP 4190740A1 EP 22210365 A EP22210365 A EP 22210365A EP 4190740 A1 EP4190740 A1 EP 4190740A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mast
- lifting
- load
- carrying means
- profiles
- 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.)
- Pending
Links
- 238000010276 construction Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/08—Masts; Guides; Chains
-
- 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
- B66F9/08—Masts; Guides; Chains
- B66F9/085—Multiple forks, i.e. more than one pair mounted on a single mast or with more than one mast
-
- 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 present invention relates to a lifting mast for an industrial truck with two load-carrying means.
- the lifting mast has a pair of outer mast profiles and a pair of inner mast profiles which are movably arranged in the outer mast profiles and are height-adjustable via a mast lifting unit.
- the object of the invention is to provide a lifting mast for an industrial truck that allows two load-carrying means to be actuated using simple means.
- the lifting mast has the features of claim 1.
- the lifting mast is provided and intended for an industrial truck with two load-carrying means, each of the load-carrying means having two forks.
- the lifting mast consists of a pair of outer mast profiles and a pair of inner mast profiles, which are movably arranged in the outer mast profiles and can be adjusted in height in the outer mast profiles via a mast lifting unit.
- the outer mast profiles can also be identified as vehicle-mounted mast profiles.
- one Mast lifting unit provided, with which the inner mast profiles are adjusted in height.
- a free lifting unit is also provided.
- a lower load-carrying means is connected to the inner mast profiles and can be adjusted in height via the mast lifting unit.
- An upper load-carrying means is mounted in the inner mast profile so that it can be adjusted in height and can be adjusted in height via the free lifting unit.
- the lifting mast according to the invention has the advantage that only very few structural changes are required compared to a conventional lifting mast, in which a single load-carrying means can be adjusted in height by means of a mast lifting unit and a free lifting unit.
- the free lifting unit has a lifting cylinder located between the mast profiles.
- the lifting cylinder can have a chain, for example, which is fastened to the upper load-carrying means. If, in connection with the present invention, upper and lower load-carrying means are mentioned, this does not mean that one load-carrying means is always arranged above the other load-carrying means. Rather, it also includes the case that both load-carrying means are arranged at the same height.
- the upper and lower load carrying means is to be understood in such a way that the load carrying means is suitable for being moved into an upper position relative to the other load carrying means. In this sense, the lower load-carrying means is characterized in that it cannot be moved into a position above the other load-carrying means.
- the lifting cylinder of the free lifting unit is arranged on a crossbeam between the inner mast profiles.
- the lifting cylinder of the free lifting unit is also raised.
- the mast lifting unit has one or two lifting cylinders which are arranged on the side of the mast profiles.
- the lifting cylinders of the mast lifting unit are preferably arranged laterally close to the mast profiles outside of the field of vision through the lifting mast.
- the free lift unit and the mast lift unit can be controlled hydraulically independently of one another.
- Hydraulically independently controllable means that a vehicle driver can control both load-carrying means independently of one another, with the upper load-carrying means being raised together with the lower load-carrying means.
- there is no automatic transition between free lift and mast lift so these functions are hydraulically independent.
- the forks of the load-bearing means are arranged next to one another in a lowered state.
- the forks of one load-carrying means are preferably both arranged inside the forks of the other load-carrying means. It has proven to be advantageous here to arrange the lower load-carrying means, which is connected to the inner profiles, within the upper load-carrying means.
- figure 1 shows a mast 10 with an outer pair of mast profiles 12a, 12b.
- the outer mast profiles 12a, 12b are connected to one another via a crossbeam 14.
- the crossbeam 14 has two connection areas 16a, 16b, which are connected to one another via a crossbeam 18.
- the outer mast profiles 12a, 12b are connected to one another by a lower crossbeam 20.
- the mast is additionally stabilized with its outer mast profiles 12 by a middle crossbar 22. This is usually located at the height of the drive part of the industrial truck, so that the middle crossbar 22 does not obstruct the view.
- the inner mast profiles 24a, 24b are arranged inside the outer mast profiles 12.
- the inner mast profiles 24 are mounted in the outer mast profiles 12 such that they can be adjusted in height, for example via rollers.
- the load-bearing means 28 is arranged on two crossbeams 32a, 32b.
- a pair of forks 34a and 34b are fixedly attached to the cross members 32a, 32b.
- the cross braces 32 are slidably mounted in the inner mast profile 24 .
- the load-carrying means 30 is arranged on a back plate 36, the back plate 36 being firmly connected to the inner mast profiles 24a, 24b.
- figure 2 shows the mode of operation when the upper load carrying means 28 is raised.
- figure 2 shows the inner hydraulic cylinder 38 on the left side, via which the mast lift takes place, with which the inner mast profile is raised relative to the outer mast profile.
- figure 3 shows the mast according to the invention with both load carrying means raised.
- the lower load-carrying means 30 is raised via the lifting cylinder 38 as a result of the mast lift.
- the inner mast profile 24 protrudes from the outer mast profile 12 .
- the lower load-carrying means 30 moves with the inner mast profile 24.
- the upper load-carrying means 28 is raised by the central lifting cylinder 26. It can be clearly seen in figure 3 also that the central lifting cylinder 26 is also raised together with the inner mast profile, so that the distance between the upper load carrying means 28 and the lower load carrying means 30 is maintained.
- a particular advantage of the mast shown is that its construction hardly differs from a conventional two-mast mast for a load carrying device. In terms of construction, only the lower load-carrying means 30 is omitted and the lifting cylinders 26 and 38 are hydraulically coupled to one another in order to obtain the smoothest possible transition from the free lift to the mast lift.
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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)
Abstract
Hubmast für ein Flurförderzeug mit zwei Lasttragmitteln, der ein Paar von äußeren Mastprofilen und ein Paar von inneren Mastprofilen aufweist, die in den äußeren Mastprofilen beweglich angeordnet sind und über eine Masthubeinheit höhenverstellbar sind, wobei eine Freihubeinheit vorgesehen ist, wobei ein unteres Lasttragmittel mit den inneren Mastprofilen verbunden ist und über die Masthubeinheit in der Höhe verstellbar ist und ein oberes Lasttragmittel in den inneren Mastprofilen gelagert ist und über die Freihubeinheit in der Höhe verstellbar ist.Lifting mast for an industrial truck with two load-carrying means, which has a pair of outer mast profiles and a pair of inner mast profiles, which are movably arranged in the outer mast profiles and are height-adjustable via a mast lifting unit, with a free lifting unit being provided, with a lower load-carrying means being connected to the inner Mast profiles is connected and the height can be adjusted via the mast lifting unit and an upper load-carrying means is mounted in the inner mast profiles and the height can be adjusted via the free lifting unit.
Description
Die vorliegende Erfindung betrifft einen Hubmast für ein Flurförderzeug mit zwei Lasttragmitteln. Der Hubmast weist ein Paar von äußeren Mastprofilen und ein Paar von inneren Mastprofilen auf, die in den äußeren Mastprofilen beweglich angeordnet und über eine Masthubeinheit höhenverstellbar sind.The present invention relates to a lifting mast for an industrial truck with two load-carrying means. The lifting mast has a pair of outer mast profiles and a pair of inner mast profiles which are movably arranged in the outer mast profiles and are height-adjustable via a mast lifting unit.
Aus
Der Erfindung liegt die Aufgabe zugrunde, einen Hubmast für ein Flurförderzeug bereitzustellen, der mit einfachen Mitteln die Betätigung von zwei Lasttragmitteln ermöglicht.The object of the invention is to provide a lifting mast for an industrial truck that allows two load-carrying means to be actuated using simple means.
Erfindungsgemäß wird die Aufgabe durch einen Hubmast mit den Merkmalen aus Anspruch 1 gelöst. Vorteilhafte Ausgestaltungen bilden die Gegenstände der Unteransprüche.According to the invention, the object is achieved by a lifting mast having the features of claim 1. Advantageous configurations form the subject matter of the dependent claims.
Der erfindungsgemäße Hubmast besitzt die Merkmale aus Anspruch 1. Der Hubmast ist vorgesehen und bestimmt für ein Flurförderzeug mit zwei Lasttragmitteln, wobei jedes der Lasttragmittel zwei Gabeln aufweist. Der Hubmast besteht aus einem Paar von äußeren Mastprofilen und einem Paar von inneren Mastprofilen, die in den äußeren Mastprofilen beweglich angeordnet sind und über eine Masthubeinheit in den äußeren Mastprofilen höhenverstellbar sind. Die äußeren Mastprofile können auch als fahrzeugfeste Mastprofile gekennzeichnet werden. Ferner ist eine Masthubeinheit vorgesehen, mit der die inneren Mastprofile in der Höhe verstellt sind. Zudem ist eine freie Hubeinheit vorgesehen.The lifting mast according to the invention has the features of claim 1. The lifting mast is provided and intended for an industrial truck with two load-carrying means, each of the load-carrying means having two forks. The lifting mast consists of a pair of outer mast profiles and a pair of inner mast profiles, which are movably arranged in the outer mast profiles and can be adjusted in height in the outer mast profiles via a mast lifting unit. The outer mast profiles can also be identified as vehicle-mounted mast profiles. Furthermore, one Mast lifting unit provided, with which the inner mast profiles are adjusted in height. A free lifting unit is also provided.
Erfindungsgemäß ist ein unteres Lasttragmittel mit den inneren Mastprofilen verbunden und über die Masthubeinheit in der Höhe verstellbar. Ein oberes Lasttragmittel ist in dem inneren Mastprofil höhenverstellbar gelagert und über die Freihubeinheit in seiner Höhe verstellbar. Der erfindungsgemäße Hubmast besitzt den Vorteil, dass nur sehr wenige konstruktive Änderungen gegenüber einem herkömmlichen Hubmast erforderlich sind, bei dem ein einziges Lasttragmittel mittels Masthubeinheit und Freihubeinheit in der Höhe verstellbar ist.According to the invention, a lower load-carrying means is connected to the inner mast profiles and can be adjusted in height via the mast lifting unit. An upper load-carrying means is mounted in the inner mast profile so that it can be adjusted in height and can be adjusted in height via the free lifting unit. The lifting mast according to the invention has the advantage that only very few structural changes are required compared to a conventional lifting mast, in which a single load-carrying means can be adjusted in height by means of a mast lifting unit and a free lifting unit.
Bei einer bevorzugten Ausgestaltung besitzt die Freihubeinheit einen zwischen den Mastprofilen stehenden Hubzylinder. Der Hubzylinder kann beispielsweise eine Kette aufweisen, die an dem oberen Lasttragmittel befestigt ist. Wenn im Zusammenhang mit der vorliegenden Erfindung von oberem und unterem Lasttragmittel gesprochen wird, so bedeutet dies nicht, dass stets ein Lasttragmittel oberhalb des anderen Lasttragmittels angeordnet ist. Vielmehr ist auch der Fall umfasst, dass beide Lasttragmittel auf derselben Höhe angeordnet sind. In diesem Kontext ist oberes und unteres Lasttragmittel so zu verstehen, dass das Lasttragmittel geeignet ist, in eine obere Position gegenüber dem anderen Lasttragmittel verfahren zu werden. Das untere Lasttragmittel ist in diesem Sinne dadurch gekennzeichnet, dass es nicht in eine Position oberhalb des anderen Lasttragmittels verfahren werden kann.In a preferred embodiment, the free lifting unit has a lifting cylinder located between the mast profiles. The lifting cylinder can have a chain, for example, which is fastened to the upper load-carrying means. If, in connection with the present invention, upper and lower load-carrying means are mentioned, this does not mean that one load-carrying means is always arranged above the other load-carrying means. Rather, it also includes the case that both load-carrying means are arranged at the same height. In this context, the upper and lower load carrying means is to be understood in such a way that the load carrying means is suitable for being moved into an upper position relative to the other load carrying means. In this sense, the lower load-carrying means is characterized in that it cannot be moved into a position above the other load-carrying means.
In einer bevorzugten Ausgestaltung ist der Hubzylinder der Freihubeinheit auf einer Quertraverse zwischen den inneren Mastprofilen angeordnet. Dies führt dazu, dass bei einem Anheben der inneren Mastprofile durch die Masthubeinheit auch der Hubzylinder der Freihubeinheit mit angehoben wird. Der besondere Vorteil dieser Ausgestaltung ist darin zu sehen, dass wenn das obere Lasttragmittel in einer Position relativ zu dem unteren Lasttragmittel verfahren wurde, bei einem Anheben des unteren Lasttragmittels dieser Abstand beibehalten wird.In a preferred embodiment, the lifting cylinder of the free lifting unit is arranged on a crossbeam between the inner mast profiles. As a result, when the inner mast profiles are raised by the mast lifting unit, the lifting cylinder of the free lifting unit is also raised. The special advantage of this Configuration can be seen in the fact that when the upper load carrying means has been moved into a position relative to the lower load carrying means, this distance is maintained when the lower load carrying means is raised.
In einer bevorzugten Weiterbildung weist die Masthubeinheit ein oder zwei Hubzylinder auf, die seitlich an den Mastprofilen angeordnet sind. Bevorzugt sind die Hubzylinder der Masthubeinheit außerhalb des Sichtfeldes durch den Hubmast seitlich nahe zu den Mastprofilen angeordnet.In a preferred development, the mast lifting unit has one or two lifting cylinders which are arranged on the side of the mast profiles. The lifting cylinders of the mast lifting unit are preferably arranged laterally close to the mast profiles outside of the field of vision through the lifting mast.
In einer bevorzugten Ausgestaltung sind Freihub- und Masthubeinheit hydraulisch unabhängig voneinander ansteuerbar. Hydraulisch unabhängig ansteuerbar bedeutet, dass ein Fahrzeugführer beide Lasttragmittel unabhängig voneinander ansteuern kann, wobei das obere Lasttragmittel gemeinsam mit dem unteren Lasttragmittel angehoben wird. Im Gegensatz zu herkömmlichen Hubgerüsten ist hier kein automatischer Übergang zwischen Freihub und Masthub vorgesehen, sodass diese Funktionen hydraulisch unabhängig sind.In a preferred embodiment, the free lift unit and the mast lift unit can be controlled hydraulically independently of one another. Hydraulically independently controllable means that a vehicle driver can control both load-carrying means independently of one another, with the upper load-carrying means being raised together with the lower load-carrying means. In contrast to conventional masts, there is no automatic transition between free lift and mast lift, so these functions are hydraulically independent.
In einer bevorzugten Ausgestaltung sind in einem abgesenkten Zustand die Gablen der Lasttragmittel nebeneinander angeordnet. Bevorzugt sind die Gabeln eines Lasttragmittels beide innerhalb der Gabeln des anderen Lasttragmittels angeordnet. Hier hat es sich als vorteilhaft herausgestellt, das untere Lasttragmittel, das mit den Innenprofilen verbunden ist, innerhalb des oberen Lasttragmittels anzuordnen.In a preferred embodiment, the forks of the load-bearing means are arranged next to one another in a lowered state. The forks of one load-carrying means are preferably both arranged inside the forks of the other load-carrying means. It has proven to be advantageous here to arrange the lower load-carrying means, which is connected to the inner profiles, within the upper load-carrying means.
Ein bevorzugtes Ausführungsbeispiel wird an den nachstehenden Figuren erläutert. Es zeigt:
- Fig. 1
- das erfindungsgemäße Hubgerüst in drei Ansichten bei abgesenkten Lasttragmitteln,
- Fig. 2
- das Lasttragmittel aus
Figur 1 bei angehobenem oberen Lasttragmittel und - Fig. 3
- oberes und unteres Lasttragmittel angehoben.
- 1
- the mast according to the invention in three views with the load carrying means lowered,
- 2
- the load carrying device
figure 1 with the upper load carrying means raised and - 3
- upper and lower load carrying device raised.
In
Auf der rechten Seite der
Das Lasttragmittel 30 ist an einer Rückenplatte 36 angeordnet, wobei die Rückenplatte 36 mit den inneren Mastprofilen 24a, 24b fest verbunden ist.The load-
Ein besonderer Vorteil des dargestellten Hubgerüsts ist, dass dieses sich konstruktiv kaum von einem herkömmlichen Zwei-mastigen Hubgerüst für ein Lasttragmittel unterscheidet. Konstruktiv entfällt lediglich das untere Lasttragmittel 30 und die Hubzylinder 26 und 38 sind hydraulisch miteinander gekoppelt, um einen möglichst ruckfreien Übergang vom Freihub zum Masthub zu erhalten.A particular advantage of the mast shown is that its construction hardly differs from a conventional two-mast mast for a load carrying device. In terms of construction, only the lower load-carrying means 30 is omitted and the lifting
- 1010
- Hubgerüstmast
- 12 a/b12 a/b
- äußere Mastprofileouter mast profiles
- 1414
- Quertraversecrossbeam
- 16 a/b16 a/b
- Anbindungsbereichconnection area
- 1818
- Quertraversecrossbeam
- 2020
- Quertraversecrossbeam
- 2222
- Quertraversecrossbeam
- 24 a/b24 a/b
- innere Mastprofileinner mast profiles
- 2626
- Hydraulikzylinderhydraulic cylinder
- 2828
- Lasttragmittelload carrying device
- 3030
- Lasttragmittelload carrying device
- 32 a/b32 a/b
- Quertraversencrossbeams
- 34 a/b34 a/b
- Gabelnforks
- 3636
- Rückenplattebackplate
- 3838
- Hydraulikzylinderhydraulic cylinder
Claims (8)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102021131941.2A DE102021131941A1 (en) | 2021-12-03 | 2021-12-03 | Lifting mast for an industrial truck with two load carrying devices |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4190740A1 true EP4190740A1 (en) | 2023-06-07 |
Family
ID=84367327
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP22210365.7A Pending EP4190740A1 (en) | 2021-12-03 | 2022-11-29 | Lifting mast for an industrial truck with two load-carrying means |
Country Status (2)
Country | Link |
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EP (1) | EP4190740A1 (en) |
DE (1) | DE102021131941A1 (en) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1062178B (en) * | 1957-02-15 | 1959-07-23 | Ruhr Intrans Hubstapler G M B | Lifting frame, especially for forklifts |
JPS5211561A (en) * | 1976-07-12 | 1977-01-28 | Ricoh Co Ltd | Forklift |
JPS5871099U (en) * | 1981-11-09 | 1983-05-14 | 株式会社豊田自動織機製作所 | Load stabilizer device for forklift |
FR2607485A1 (en) * | 1986-11-28 | 1988-06-03 | Everitube | Device for handling multiple loads |
JPH0218298A (en) * | 1988-07-05 | 1990-01-22 | Toyota Autom Loom Works Ltd | General purpose type fork device for forklift |
EP2159186A1 (en) | 2008-08-27 | 2010-03-03 | BT Products AB | Hydraulic system for double stacker industrial truck |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102018118022A1 (en) | 2018-07-25 | 2020-01-30 | Linde Material Handling Gmbh | Mast of an industrial truck |
-
2021
- 2021-12-03 DE DE102021131941.2A patent/DE102021131941A1/en active Pending
-
2022
- 2022-11-29 EP EP22210365.7A patent/EP4190740A1/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1062178B (en) * | 1957-02-15 | 1959-07-23 | Ruhr Intrans Hubstapler G M B | Lifting frame, especially for forklifts |
JPS5211561A (en) * | 1976-07-12 | 1977-01-28 | Ricoh Co Ltd | Forklift |
JPS5871099U (en) * | 1981-11-09 | 1983-05-14 | 株式会社豊田自動織機製作所 | Load stabilizer device for forklift |
FR2607485A1 (en) * | 1986-11-28 | 1988-06-03 | Everitube | Device for handling multiple loads |
JPH0218298A (en) * | 1988-07-05 | 1990-01-22 | Toyota Autom Loom Works Ltd | General purpose type fork device for forklift |
EP2159186A1 (en) | 2008-08-27 | 2010-03-03 | BT Products AB | Hydraulic system for double stacker industrial truck |
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Publication number | Publication date |
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DE102021131941A1 (en) | 2023-06-07 |
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