EP2782864B1 - Counterweight fixing device - Google Patents
Counterweight fixing device Download PDFInfo
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- EP2782864B1 EP2782864B1 EP12791432.3A EP12791432A EP2782864B1 EP 2782864 B1 EP2782864 B1 EP 2782864B1 EP 12791432 A EP12791432 A EP 12791432A EP 2782864 B1 EP2782864 B1 EP 2782864B1
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- European Patent Office
- Prior art keywords
- counterweight
- fixing device
- blocks
- jib
- opening
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- 238000003780 insertion Methods 0.000 claims description 14
- 230000037431 insertion Effects 0.000 claims description 14
- 230000005484 gravity Effects 0.000 claims description 4
- 238000010276 construction Methods 0.000 description 7
- 239000000725 suspension Substances 0.000 description 7
- 210000002414 leg Anatomy 0.000 description 5
- 238000009412 basement excavation Methods 0.000 description 2
- 230000000284 resting effect Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/72—Counterweights or supports for balancing lifting couples
- B66C23/74—Counterweights or supports for balancing lifting couples separate from jib
Definitions
- the invention relates to a counterweight fixing for a crane with a counter-jib, in particular for a tower crane with luffing jib, comprising a support rod, a connection of the support rod with the counter-jib and counterweight blocks that can be suspended on the support rod, and thru axles.
- a mobile crane in which for road transport the counterweight is deposited on an appended to the crane vehicle chassis, for crane operation, the counterweight is fixed together with the chassis to the crane superstructure, wherein in uniaxial design of the chassis, the counterweight is formed like a portal and with the portal opening the axle overlaps.
- the variant of the counterweight device that is most frequently used usually causes disturbing noises by a reciprocating motion of the counterweights in the basket.
- this method is particularly unsuitable.
- the counterjib connected to the load beam lowers as the load jib is folded up, changing its angle to the tower, the counterweights, which are not usually cut to size on the basket, slip around in the basket. If the basket is not closed to its top, there is also the danger that counterweights slip or tilt with small outreach from the basket.
- a known type of equipment of the counter-jib with counterweights provides that in disc-shaped counterweight blocks, which are usually poured concrete, at the two parallel to the longitudinal axis lying narrow sides each have a cavity in the form of a bore is made, in each of which a thru axle is inserted.
- the lancing axes are designed with respect to the holes so that after insertion of a part of the thru axles protrudes from the counterweight blocks. This outstanding part of the thru axles serves to be hooked into the counterjib.
- Notches are made on the counterjib in this known counterweight fixing for mounting the counterweight blocks in the two longitudinal members, which define the position of the counterweight blocks.
- the protruding parts of the two thru axles of a counterweight block are each set in two on the two side rails opposite notches. This requires high precision during assembly. Also, the suspensions are usually not fixed further, so that this system for luffing cranes does not provide sufficient security, since the stub axles when lifting the boom and the associated lowering of the counter-jib from the notches can slip. Even a backup of the thru axles in the notches by an additional bar, which would require further installation work, would not lead to a satisfactory for Wippkrane system for counterbalance would be present.
- the counterweights in order not to further increase the requirements of full counterweighting to the precision of assembly or, in particular, if only a partial load of counterweights, have some play in the direction of the longitudinal axis of the counterjib. This results in that when changing the angle of the counter jib to the tower of the crane, a partial rotation of the mounted in the notches of the carrier of the counter jib thru axles takes place and thus also the counterweight blocks. By folding them over and in particular also partially successive clashing disturbing noises are generated up to noise.
- a particular disadvantage of this known counterweight fixation is that the elements of counterweight blocks and stub axles must be precisely adapted to the individual crane model in their dimensions to fit in the suspension holes on the counter-jib and on the other hand, but with the stub axles to rest on the longitudinal beams of the counter jib sufficient.
- the invention is therefore based on the object to provide a counterweight fixation, which does not have the aforementioned disadvantages, i. a counterweight fixation, which is easy to install and can be used with different crane types, but especially with luffing cranes.
- a counterweight fixing for a crane which has a counter-jib, in particular for a tower crane with luffing jib, comprising a support rod, a connection of the support rod with the counter jib and one or more counterweight blocks, which can be suspended on the support rod, and one or a plurality of stub axles, wherein the support bar is substantially perpendicular to the longitudinal axis of the counter-jib and arranged horizontally, and the connection of the support bar with the counter-jib comprises two connecting struts, which are arranged perpendicular to the support bar and parallel to each other, and the counterweight fixing comprises a transverse bar which is arranged parallel to the carrier bar, wherein the transverse bar has recesses for receiving through-axis, and the counterweights have a substantially U-shaped cross-section, wherein the opening in the U-shape allows the Ge gen.sblöcke are hung on the support rod, and wherein the counterweight blocks on
- a "horizontal" arrangement of the support bar means that one end and the other end of the support bar each have substantially the same distance from the floor.
- the carrier bar is a round tube.
- the opening tapers from the open opening end towards the closed opening end.
- the counterweight blocks in such a counterbalance fixation can be poured in particular from concrete.
- the expense of drilling cavities for the thru axles in concrete blocks is relatively manageable. This also applies to the incorporation of the openings in the counterweight blocks, which are provided for the suspension on the support rod.
- the openings for hooking can already be taken into account when casting the blocks.
- the counterweight fixation according to the invention allows relatively generous tolerances in the execution of the counterweight blocks.
- the opening in the counterweight block for mounting on the support bar does not have to be precisely cut precisely.
- the dimensions of the counterweight blocks are variable, in particular in the height and the width of the counterweight blocks on the wider side, so that except by varying the number of hinged counterweight blocks an additional adjustment of the total counterweight by the dimensions of the individual counterweight blocks is possible.
- Also with regard to the longitudinal axis of the bores for the stub axles are comparatively high tolerances.
- a thru-axle does not have to complete a cavity in a counterweight block as long as it only connects the counterweight blocks and the crossbar.
- the bores for the plug-in axles extend between 100 and 200 mm into the counterweight blocks.
- connection of the stub axles with the transverse strip provides that the cavities are notches on the upper side of the transverse bar.
- cross bar according to the invention also means such constructions in which further elements are placed on the actual cross bar, in which the cavities are incorporated. Such elements are, for example, separate strips, which are short in relation to the actual cross bar and therefore only have the cavities for mounting the thru axle (s) of one or two counterweight blocks.
- counterweight blocks can be hung on the support rod, in which already the thru-axle is inserted into the cavity.
- the thru-axle then rests on top of a load-bearing element as in conventional counterweight fixings, the cross-bar, but is plugged into the counterweight block with the other side.
- a fixing device preferably a locking bar, over the notches with the sockets resting in them.
- Another preferred connection of the stub axles with the cross bar is done by the cavities for receiving the thru axles pass through the cross bar. In this way, the thru axles can be easily pushed through the cross bar.
- the fixation of the thru axles can be done in any way. The person skilled in the art with its average capabilities readily technical possibilities known to prevent the thru axles slip out of the cavities again.
- the length of a plug-in axle substantially corresponds to the sum of the length of a hollow for the plug-in axles in a counterweight and the transverse strip.
- the stub axles each have a length which is greater than the length of the cavities for receiving the stub axles in one of the counterweight blocks on the one hand and in the transverse bar on the other.
- the shape of the counterweight blocks is preferably selected in the counterbalance fixation of the invention such that the center of gravity of a counterweight block relative to a subdivision of the counterweight block through the insertion aperture is on the side of the leg of the U-shaped counterweight block which is closer to the counterjib than the other thigh.
- the construction according to the invention is used optimally with regard to the distribution of forces. This is particularly advantageous if the cavities are notches in the transverse bar, in which the stuck in the counterweight blocks stub axles are mounted, as so the axle also in Luffing cranes with rigid connection between the load beam and counter-jib lifting the load boom and the associated lowering of the counter jib tends to press on the crossbar and not on the fixing device.
- the crossbar prevents the counterweight blocks from rotating in the direction of the counterjib about the axis formed by the carrier bar.
- the counterweight blocks rest in this way almost motionless on the support bar, even if the angle of the counter jib to the tower of the crane clearly from the plane parallel to the ground level, in which counter jib and load boom are in the horizontal position away.
- a particularly simple, material-saving and therefore preferred embodiment of the counterweight fixing according to the invention results when the connecting struts are each arranged at one end of the support rod with one of its ends.
- this embodiment is advantageous if the cross bar has a maximum length of the support rod. It is obtained in this way a frame with a rectangular floor plan as a holder for the counterweight blocks.
- connecting struts are parallel to the longitudinal axis of the counter-jib.
- FIG. 1 shows an embodiment of the counterweight fixation (1) according to the invention with two hinged counterweight blocks (4).
- the counterweight fixing (1) comprises a round tube as a support rod (2).
- the U-shaped counterweight blocks (4) are hung over their opening (9) on the round tube. Toward the open opening end, the opening (9) is further shaped.
- the support rod (2) is connected via two connecting struts (6) with the transverse strip (7), which together form a closed frame construction.
- the ends of the connecting struts (6) are directly connected to the ends of the support rod (2), so that in the frame construction no unnecessary and possibly even disturbing overhanging areas are present.
- the frame construction is attached directly to the counterjib (3).
- the counterweight blocks (4) in the embodiment shown are solid, one piece machined elements which are shaped so that their center of gravity is in the leg (11 a) of the counterweight block, which is closer to the counterjib in the hinged state of the counter element.
- On the narrow side (10) of the counterweight blocks (4), which in the suspended state of the counterweight blocks (4) as shown here is oriented towards the counter-jib (3), there are thru axles (5).
- the cross bar (7) fixes the counterweight blocks (4) in the position of the suspension, which was made while the load beam and counterjib (3) were in the horizontal state. Part of the cross bar (7) in the sense of the present invention are present on the actual cross bar patch short strips.
- a fixing device (12) in this case a locking rod, closes the plug-in axis (5) in the indentation-shaped cavity (8a) of the transverse strip (7), so that the counterweight block (4) can not rotate around the round tube.
- FIG. 2 shows with a cross section through a counterweight block (4) of the counterweight fixing (1)
- FIG. 1 the different shaping of the legs (11a, 11b) of the counterweight block (4), which are chosen so that the center of gravity of the counterweight block (4) on the side of the support rod (2), which is closer to the counter-jib. It can also be seen in the cross-section that the plug-in axis (5) is inserted into a cavity (8b) in the counterweight block (4).
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Description
Die Erfindung betrifft eine Gegengewichtsfixierung für einen Kran mit einem Gegenausleger, insbesondere für einen Turmdrehkran mit Wippausleger, umfassend eine Trägerstange, eine Verbindung der Trägerstange mit dem Gegenausleger und Gegengewichtsblöcke, die auf der Trägerstange einhängbar sind, und Steckachsen.The invention relates to a counterweight fixing for a crane with a counter-jib, in particular for a tower crane with luffing jib, comprising a support rod, a connection of the support rod with the counter-jib and counterweight blocks that can be suspended on the support rod, and thru axles.
Für Krane sind verschiedene Möglichkeiten der Anbringung von Gegengewichten an dem Gegenausleger bekannt, etwa das Auflegen der Gegengewichte auf den Gegenausleger, das Einlegen der Gegengewichte in einen Korb am Gegenausleger oder die Einhängung der Gegengewichte in den Gegenausleger. Diese Varianten der Gegengewichtsanbringung haben den Nachteil, dass sie entweder eine besonders genaue Arbeit bei der Montage verlangen und/oder im Betriebszustand zu einer nicht unbedeutenden Lärmbelästigung führen.For cranes various ways of attaching counterweights on the counter-jib are known, such as placing the counterweights on the counter-jib, the insertion of the counterweights in a basket on the counter-jib or the suspension of the counterweights in the counter-jib. These variants of the counterweight attachment have the disadvantage that they either require a particularly accurate work during assembly and / or lead in the operating condition to a not insignificant noise pollution.
Aus der Offenlegungsschrift
Insbesondere die Variante der Gegengewichtsvorrichtung, die mit am häufigsten genutzt wird, die Einlegung von Gegengewichten in einen Korb, verursacht in der Regel störende Geräusche durch eine Hin- und Herbewegung der Gegengewichte in dem Korb. Für Turmdrehkrane mit Wippausleger ist diese Methode besonders ungeeignet. Da sich beim Hochklappen des Lastauslegers der mit dem Lastausleger verbundene Gegenausleger absenkt und dabei seinen Winkel zum Turm verändert, rutschen die Gegengewichte, die üblicherweise nicht passgenau auf den Korb zugeschnitten sind, in dem Korb herum. Sofern der Korb zu seiner Oberseite hin nicht verschlossen ist, besteht zudem die Gefahr, dass Gegengewichte bei kleiner Ausladung aus dem Korb rutschen oder kippen.In particular, the variant of the counterweight device that is most frequently used, the insertion of counterweights in a basket, usually causes disturbing noises by a reciprocating motion of the counterweights in the basket. For tower cranes with luffing jib this method is particularly unsuitable. As the counterjib connected to the load beam lowers as the load jib is folded up, changing its angle to the tower, the counterweights, which are not usually cut to size on the basket, slip around in the basket. If the basket is not closed to its top, there is also the danger that counterweights slip or tilt with small outreach from the basket.
Auch die herkömmlichen Arten der Einhängung von Gegengewichten in den Gegenausleger sind insbesondere bei Wippkranen nachteilig. Eine bekannte Art der Ausstattung des Gegenauslegers mit Gegengewichten sieht vor, dass in scheibenförmigen Gegengewichtsblöcke, die üblicherweise aus Beton gegossen sind, an den beiden parallel zur Längsachse liegenden Schmalseiten jeweils eine Aushöhlung in Form einer Bohrung vorgenommen wird, in welche jeweils eine Steckachse gesteckt wird. Die Stechachsen sind in Bezug auf die Bohrungen so beschaffen, dass nach dem Einstecken ein Teil der Steckachsen aus den Gegengewichtsblöcken herausragt. Dieser herausragende Teil der Steckachsen dient der Einhängung in den Gegenausleger. An dem Gegenausleger sind bei dieser bekannten Gegengewichtsfixierung zur Einhängung der Gegengewichtsblöcke in den beiden Längsträgern jeweils Einkerbungen vorgenommen, welche die Lage der Gegengewichtsblöcke vorgeben. Die herausragenden Teile der beiden Steckachsen eines Gegengewichtsblockes werden jeweils in zwei auf den beiden Längsträgern einander gegenüberliegende Einkerbungen gesetzt. Dieses verlangt eine hohe Präzision bei der Montage. Auch werden die Einhängungen üblicherweise nicht weiter fixiert, so dass auch dieses System für Wippkrane keine ausreichende Sicherheit bietet, da die Steckachsen beim Heben des Auslegers und damit verbundenem Absenken des Gegenauslegers aus den Einkerbungen rutschen können. Selbst eine Sicherung der Steckachsen in den Einkerbungen durch eine zusätzliche Leiste, die weiteren Montageaufwand erfordern würde, würde nicht dazu führen, dass ein auch für Wippkrane zufriedenstellendes System zur Gegengewichtsfixierung vorliegen würde. Bei diesen herkömmlichen Systemen haben nämlich die Gegengewichte, um die Anforderungen bei voller Gegengewichtsbestückung an die Präzision bei der Montage nicht noch weiter zu steigern bzw. insbesondere, wenn nur eine Teilbeladung mit Gegengewichten erfolgt, ein gewisses Spiel in Richtung der Längsachse des Gegenauslegers. Dieses führt dazu, dass bei Änderung des Winkels des Gegenauslegers zum Turm des Kranes eine Teildrehung der in den Einkerbungen der Träger des Gegenauslegers gelagerten Steckachsen erfolgt und damit auch der Gegengewichtsblöcke. Durch deren Umklappen und insbesondere auch teilweise erfolgendes Aneinanderschlagen werden störende Geräusche bis hin zu Lärm erzeugt.Also, the conventional types of suspension of counterweights in the counter-jib are detrimental in particular for Luffing cranes. A known type of equipment of the counter-jib with counterweights provides that in disc-shaped counterweight blocks, which are usually poured concrete, at the two parallel to the longitudinal axis lying narrow sides each have a cavity in the form of a bore is made, in each of which a thru axle is inserted. The lancing axes are designed with respect to the holes so that after insertion of a part of the thru axles protrudes from the counterweight blocks. This outstanding part of the thru axles serves to be hooked into the counterjib. Notches are made on the counterjib in this known counterweight fixing for mounting the counterweight blocks in the two longitudinal members, which define the position of the counterweight blocks. The protruding parts of the two thru axles of a counterweight block are each set in two on the two side rails opposite notches. This requires high precision during assembly. Also, the suspensions are usually not fixed further, so that this system for luffing cranes does not provide sufficient security, since the stub axles when lifting the boom and the associated lowering of the counter-jib from the notches can slip. Even a backup of the thru axles in the notches by an additional bar, which would require further installation work, would not lead to a satisfactory for Wippkrane system for counterbalance would be present. In fact, in these conventional systems the counterweights, in order not to further increase the requirements of full counterweighting to the precision of assembly or, in particular, if only a partial load of counterweights, have some play in the direction of the longitudinal axis of the counterjib. This results in that when changing the angle of the counter jib to the tower of the crane, a partial rotation of the mounted in the notches of the carrier of the counter jib thru axles takes place and thus also the counterweight blocks. By folding them over and in particular also partially successive clashing disturbing noises are generated up to noise.
Ein besonderer Nachteil dieser bekannten Gegengewichtsfixierung ist, dass die Elemente aus Gegengewichtsblöcken und Steckachsen jeweils an das einzelne Kranmodell in ihren Abmessungen genau angepasst sein müssen, um in die Einhängeöffnungen am Gegenausleger zu passen und andererseits aber mit den Steckachsen ausreichend auf den Längsträgern des Gegenauslegers aufzuliegen.A particular disadvantage of this known counterweight fixation is that the elements of counterweight blocks and stub axles must be precisely adapted to the individual crane model in their dimensions to fit in the suspension holes on the counter-jib and on the other hand, but with the stub axles to rest on the longitudinal beams of the counter jib sufficient.
Der Erfindung liegt daher die Aufgabe zugrunde, eine Gegengewichtsfixierung bereitzustellen, welche die vorgenannten Nachteile nicht aufweist, d.h. eine Gegengewichtsfixierung, die montagefreundlich ist und bei unterschiedlichen Krantypen, insbesondere aber auch bei Wippkranen, einsetzbar ist.The invention is therefore based on the object to provide a counterweight fixation, which does not have the aforementioned disadvantages, i. a counterweight fixation, which is easy to install and can be used with different crane types, but especially with luffing cranes.
Die Aufgabe wird gelöst durch eine Gegengewichtsfixierung für einen Kran, der einen Gegenausleger aufweist, insbesondere für einen Turmdrehkran mit Wippausleger, umfassend eine Trägerstange, eine Verbindung der Trägerstange mit dem Gegenausleger und einen oder mehrere Gegengewichtsblöcke, die auf der Trägerstange einhängbar sind, und eine oder mehrere Steckachsen, bei welcher die Trägerstange im Wesentlichen rechtwinklig zu der Längsachse des Gegenauslegers und horizontal angeordnet ist, und die Verbindung der Trägerstange mit dem Gegenausleger zwei Verbindungsstreben umfasst, die rechtwinklig zu der Trägerstange angeordnet sind und parallel zueinander liegen, und die Gegengewichtsfixierung eine Querleiste umfasst, welche parallel zu der Trägerstange angeordnet ist, wobei die Querleiste Aushöhlungen zur Aufnahme von Steckachsen aufweist, und die Gegengewichte im Wesentlichen einen U-förmigen Querschnitt aufweisen, wobei die Öffnung in der U-Form ermöglicht, dass die Gegengewichtsblöcke auf die Trägerstange hängbar sind, und wobei die Gegengewichtsblöcke an ihrer Schmalseite, welche im eingehängten Zustand der Gegengewichtsblöcke zum Gegenausleger hin gerichtet ist, Aushöhlungen zur Aufnahme der Steckachsen aufweisen.The object is achieved by a counterweight fixing for a crane, which has a counter-jib, in particular for a tower crane with luffing jib, comprising a support rod, a connection of the support rod with the counter jib and one or more counterweight blocks, which can be suspended on the support rod, and one or a plurality of stub axles, wherein the support bar is substantially perpendicular to the longitudinal axis of the counter-jib and arranged horizontally, and the connection of the support bar with the counter-jib comprises two connecting struts, which are arranged perpendicular to the support bar and parallel to each other, and the counterweight fixing comprises a transverse bar which is arranged parallel to the carrier bar, wherein the transverse bar has recesses for receiving through-axis, and the counterweights have a substantially U-shaped cross-section, wherein the opening in the U-shape allows the Ge gengewichtsblöcke are hung on the support rod, and wherein the counterweight blocks on their narrow side, which is directed in the suspended state of the counterweight blocks to the counter-jib out, have recesses for receiving the stub axles.
Eine "horizontale" Anordnung der Trägerstange bedeutet, dass das eine Ende und das andere Ende der Trägerstange jeweils im Wesentlichen die gleiche Entfernung zum Boden aufweisen.A "horizontal" arrangement of the support bar means that one end and the other end of the support bar each have substantially the same distance from the floor.
Weitere Ausführungsformen sind Gegenstand der Unteransprüche oder nachfolgend beschrieben.Further embodiments are the subject matter of the subclaims or described below.
Bevorzugt ist die Trägerstange ein Rundrohr. Zweckmäßig ist dann die Form der Öffnungen in den Gegengewichtsblöcken, über welche die Gegengewichtsblöcke auf das Rundrohr gehängt werden, am geschlossenen Ende der Öffnung abgerundet. Besonders einfach lassen sich die Gegengewichtsblöcke auf einem Rundrohr, aber auch auf einer beliebigen anderen Trägerstange positionieren, wenn die Öffnung in der U-Form der Gegengewichtsblöcke, also der Öffnung, über welche die Gegengewichtsblöcke auf die Trägerstange eingehängt werden, zum offenen Öffnungsende hin einen größeren Durchmesser aufweist als am geschlossenen Öffnungsende. Besonders bevorzugt verjüngt sich dabei die Öffnung vom offenen Öffnungsende hin zum geschlossenen Öffnungsende.Preferably, the carrier bar is a round tube. Appropriately, then the shape of the openings in the counterweight blocks over which the counterweight blocks are hung on the round tube, rounded at the closed end of the opening. It is particularly easy to position the counterweight blocks on a round tube, but also on any other carrier bar, when the opening in the U-shape of the counterweight blocks, ie the opening over which the counterweight blocks are hung on the carrier bar, towards the open opening end of a larger Diameter than at the closed opening end. Particularly preferably, the opening tapers from the open opening end towards the closed opening end.
Die Gegengewichtsblöcke bei einer solchen Gegengewichtsfixierung können insbesondere aus Beton gegossen sein. Der Aufwand zur Bohrung von Aushöhlungen für die Steckachsen in Blöcke aus Beton ist vergleichsweise überschaubar. Dieses gilt auch für die Einarbeitung der Öffnungen in die Gegengewichtsblöcke, die für die Einhängung auf der Trägerstange vorgesehen sind. Die Öffnungen zur Einhängung können bereits beim Gießen der Blöcke berücksichtigt werden.The counterweight blocks in such a counterbalance fixation can be poured in particular from concrete. The expense of drilling cavities for the thru axles in concrete blocks is relatively manageable. This also applies to the incorporation of the openings in the counterweight blocks, which are provided for the suspension on the support rod. The openings for hooking can already be taken into account when casting the blocks.
Die erfindungsgemäße Gegengewichtsfixierung gestattet bei der Ausführung der Gegengewichtsblöcke vergleichsweise großzügige Toleranzen. Die Öffnung in dem Gegengewichtsblock zur Einhängung auf der Trägerstange muss nicht exakt passgenau geschnitten sein. Die Abmessungen der Gegengewichtsblöcke sind insbesondere in der Höhe und der Breite der Gegengewichtsblöcke auf deren breiterer Seite variabel, so dass außer durch Variation der Zahl der eingehängten Gegengewichtsblöcke eine zusätzliche Einstellmöglichkeit des Gesamtgegengewichts durch die Abmessungen der einzelnen Gegengewichtsblöcke möglich ist. Auch hinsichtlich der Längsachse der Bohrungen für die Steckachsen bestehen vergleichsweise hohe Toleranzen. Eine Steckachse muss eine Aushöhlung in einem Gegengewichtsblock nicht vollständig ausfüllen, solange sie nur die Gegengewichtsblöcke und die Querleiste nicht verlierbar verbindet. Die Bohrungen für die Steckachsen reichen beispielsweise zwischen 100 und 200 mm in die Gegengewichtsblöcke hinein.The counterweight fixation according to the invention allows relatively generous tolerances in the execution of the counterweight blocks. The opening in the counterweight block for mounting on the support bar does not have to be precisely cut precisely. The dimensions of the counterweight blocks are variable, in particular in the height and the width of the counterweight blocks on the wider side, so that except by varying the number of hinged counterweight blocks an additional adjustment of the total counterweight by the dimensions of the individual counterweight blocks is possible. Also with regard to the longitudinal axis of the bores for the stub axles are comparatively high tolerances. A thru-axle does not have to complete a cavity in a counterweight block as long as it only connects the counterweight blocks and the crossbar. For example, the bores for the plug-in axles extend between 100 and 200 mm into the counterweight blocks.
Bevorzugt sieht die Verbindung der Steckachsen mit der Querleiste vor, dass die Aushöhlungen Einkerbungen auf der oberen Seite der Querleiste sind. Dabei sind unter dem Begriff "Querleiste" erfindungsgemäß auch solche Konstruktionen zu verstehen, bei welchen auf die eigentliche Querleiste weitere Elemente aufgesetzt sind, in welche die Aushöhlungen eingearbeitet sind. Derartige Elemente sind beispielsweise separate Leisten, die im Verhältnis zu der eigentlichen Querleiste kurz sind und daher nur die Aushöhlungen zur Einhängung der Steckachse(n) von einem oder zwei Gegengewichtsblöcken aufweisen. Durch Einkerbungen auf der Oberseite der Steckleiste, einschließlich solchen, die in auf die Querleiste aufgesetzte Elemente eingearbeitet sind, können Gegengewichtsblöcke auf die Trägerstange gehängt werden, bei denen bereits die Steckachse in die Aushöhlung gesteckt ist. Die Steckachse ruht dann wie bei herkömmlichen Gegengewichtsfixierungen oben auf einem tragenden Element, der Querleiste, ist aber mit der anderen Seite in den Gegengewichtsblock gesteckt. Zur Fixierung und Verwendbarkeit bei Wippkranen ist es dann nur noch erforderlich, eine Fixiervorrichtung, bevorzugt eine Sperrstange, über den Einkerbungen mit den in ihnen ruhenden Steckächsen vorzusehen.Preferably, the connection of the stub axles with the transverse strip provides that the cavities are notches on the upper side of the transverse bar. The term "cross bar" according to the invention also means such constructions in which further elements are placed on the actual cross bar, in which the cavities are incorporated. Such elements are, for example, separate strips, which are short in relation to the actual cross bar and therefore only have the cavities for mounting the thru axle (s) of one or two counterweight blocks. By notches on the top of the header, including those which are incorporated in patched on the cross bar elements, counterweight blocks can be hung on the support rod, in which already the thru-axle is inserted into the cavity. The thru-axle then rests on top of a load-bearing element as in conventional counterweight fixings, the cross-bar, but is plugged into the counterweight block with the other side. For fixation and usability in luffing cranes, it is then only necessary to provide a fixing device, preferably a locking bar, over the notches with the sockets resting in them.
Eine weitere bevorzugte Verbindung der Steckachsen mit der Querleiste erfolgt, indem die Aushöhlungen zur Aufnahme der Steckachsen durch die Querleiste hindurch reichen. Auf diese Weise können die Steckachsen einfach durch die Querleiste geschoben werden. Die Fixierung der Steckachsen kann auf beliebige Weise erfolgen. Dem Fachmann sind mit seinen durchschnittlichen Fähigkeiten ohne Weiteres technische Möglichkeiten bekannt, um zu verhindern, dass die Steckachsen wieder aus den Aushöhlungen herausrutschen.Another preferred connection of the stub axles with the cross bar is done by the cavities for receiving the thru axles pass through the cross bar. In this way, the thru axles can be easily pushed through the cross bar. The fixation of the thru axles can be done in any way. The person skilled in the art with its average capabilities readily technical possibilities known to prevent the thru axles slip out of the cavities again.
Es ist bevorzugt, wenn die Länge einer Steckachse im Wesentlichen der Summe der Länge einer Aushöhlung für die Steckachsen in einem Gegengewicht und der Querleiste entspricht.It is preferred if the length of a plug-in axle substantially corresponds to the sum of the length of a hollow for the plug-in axles in a counterweight and the transverse strip.
Vorteilhaft ist auch, wenn die Steckachsen jeweils eine Länge aufweisen, die größer ist als die Länge der Aushöhlungen zur Aufnahme der Steckachsen in einem der Gegengewichtsblöcke einerseits und in der Querleiste andererseits.It is also advantageous if the stub axles each have a length which is greater than the length of the cavities for receiving the stub axles in one of the counterweight blocks on the one hand and in the transverse bar on the other.
Die Form der Gegengewichtsblöcke ist bei der erfindungsgemäßen Gegengewichtsfixierung bevorzugt so gewählt, dass der Schwerpunkt eines Gegengewichtsblockes, bezogen auf eine Unterteilung des Gegengewichtsblockes durch die Öffnung zum Einhängen, auf der Seite des Schenkels des U-förmigen Gegengewichtsblockes liegt, der näher an dem Gegenausleger liegt als der andere Schenkel.
Hierdurch wird die erfindungsgemäße Konstruktion hinsichtlich der Kräfteverteilung optimal genutzt. Dieses ist insbesondere vorteilhaft, wenn die Aushöhlungen in der Querleiste Einkerbungen sind, in welche die in den Gegengewichtsblöcken steckenden Steckachsen eingehängt werden, da so die Steckachse auch bei Wippkranen mit starrer Verbindung zwischen Lastausleger und Gegenausleger bei Anhebung des Lastauslegers und dem damit verbundenen Absenken des Gegenauslegers tendenziell auf die Querleiste drückt und nicht auf die Fixiervorrichtung. Die Querleiste hindert die Gegengewichtsblöcke daran, in Richtung des Gegenauslegers um die durch die Trägerstange gebildete Achse zu drehen. Die Gegengewichtsblöcke ruhen auf diese Weise nahezu bewegungslos auf der Trägerstange, auch wenn sich der Winkel des Gegenauslegers zum Turm des Kranes deutlich von der zum Boden parallelen Ebene, in welcher sich Gegenausleger und Lastausleger in der horizontalen Position befinden, entfernt.The shape of the counterweight blocks is preferably selected in the counterbalance fixation of the invention such that the center of gravity of a counterweight block relative to a subdivision of the counterweight block through the insertion aperture is on the side of the leg of the U-shaped counterweight block which is closer to the counterjib than the other thigh.
As a result, the construction according to the invention is used optimally with regard to the distribution of forces. This is particularly advantageous if the cavities are notches in the transverse bar, in which the stuck in the counterweight blocks stub axles are mounted, as so the axle also in Luffing cranes with rigid connection between the load beam and counter-jib lifting the load boom and the associated lowering of the counter jib tends to press on the crossbar and not on the fixing device. The crossbar prevents the counterweight blocks from rotating in the direction of the counterjib about the axis formed by the carrier bar. The counterweight blocks rest in this way almost motionless on the support bar, even if the angle of the counter jib to the tower of the crane clearly from the plane parallel to the ground level, in which counter jib and load boom are in the horizontal position away.
Eine besonders einfache, materialsparende und daher bevorzugte Ausführungsform der erfindungsgemäßen Gegengewichtsfixierung ergibt sich, wenn die Verbindungsstreben jeweils an einem Ende der Trägerstange mit einem ihrer Enden angeordnet sind. Insbesondere ist diese Ausführungsform vorteilhaft, wenn auch die Querleiste maximal die Länge der Trägerstange aufweist. Es wird auf diese Weise ein Rahmen mit einem rechteckigen Grundriss als Halterung für die Gegengewichtsblöcke erhalten.A particularly simple, material-saving and therefore preferred embodiment of the counterweight fixing according to the invention results when the connecting struts are each arranged at one end of the support rod with one of its ends. In particular, this embodiment is advantageous if the cross bar has a maximum length of the support rod. It is obtained in this way a frame with a rectangular floor plan as a holder for the counterweight blocks.
Vorteilhaft ist insbesondere, wenn die Verbindungsstreben parallel zu der Längsachse des Gegenauslegers liegen.It is particularly advantageous if the connecting struts are parallel to the longitudinal axis of the counter-jib.
Die Erfindung wird anhand der nachfolgenden Figur näher erläutert.The invention will be explained in more detail with reference to the following figure.
Es zeigen:
- Fig. 1:
- perspektivische Ansicht einer Ausführungsform der erfindungsgemäßen Gegengewichtsfixierung mit eingehängten Gegengewichtsblöcken
- Fig. 2:
- seitlicher Querschnitt durch einen Gegengewichtsblock der erfindungsgemäßen Gegengewichtsfixierung nach
Figur 1 ohne Gegenausleger
- Fig. 1:
- Perspective view of an embodiment of the counterweight fixation invention with hinged counterweight blocks
- Fig. 2:
- lateral cross section through a counterweight block of the counterweight fixation according to the invention
FIG. 1 without counter-jib
Die Gegengewichtsblöcke (4) bei der gezeigten Ausführungsform sind massive, einteilig gearbeitete Elemente, die so geformt sind, dass deren Schwerpunkt in dem Schenkel (11 a) des Gegengewichtsblockes liegt, der im eingehängten Zustand des Gegenelementes näher an dem Gegenausleger liegt. An der Schmalseite (10) der Gegengewichtsblöcke (4), welche im eingehängten Zustand der Gegengewichtsblöcke (4) wie vorliegend gezeigt zum Gegenausleger (3) hin orientiert ist, befinden sich Steckachsen (5). Die Querleiste (7) fixiert die Gegengewichtsblöcke (4) in der Position der Einhängung, welche vorgenommen wurde, während sich Lastausleger und Gegenausleger (3) im horizontalen Zustand befanden. Teil der Querleiste (7) im erfindungsgemäßen Sinn sind vorliegend auf die eigentliche Querleiste aufgesetzte Kurzleisten. Diese weisen als Aushöhlungen (8a) Einkerbungen auf, so dass beim Aufbau der Gegengewichtsfixierung (1) die mit den Steckachsen (5) ausgerüsteten Gegengewichtsblöcke (4) in die Rahmenkonstruktion eingehängt werden können. Eine Fixiervorrichtung (12), vorliegend eine Sperrstange, schließt die Steckachse (5) in der als Einkerbung gestalteten Aushöhlung (8a) der Querleiste (7) ein, so dass der Gegengewichtsblock (4) sich nicht um das Rundrohr drehen kann.
- 11
- GegengewichtsfixierungCounterweight fixation
- 22
- Trägerstangesupport rod
- 33
- Gegenauslegercounter-jib
- 44
- GegengewichtsblockCounterweight block
- 55
- Steckachsefloating axle
- 66
- Verbindungsstrebenconnecting struts
- 77
- Gegenleistecounterstrip
- 8a8a
- Aushöhlung (Querleiste)Excavation (cross bar)
- 8b8b
- Aushöhlung (Gegengewichtsblock)Excavation (counterweight block)
- 99
- Öffnungopening
- 1010
- Schmalseitenarrow side
- 11a11a
- Schenkelleg
- 11b11b
- Schenkelleg
- 1212
- Fixiervorrichtungfixing
Claims (9)
- A counterweight fixing device (1) for a crane which has a counter jib (3), in particular for a tower crane with a luffing jib, comprising a carrier bar (2), a connection of the carrier bar (2) to the counter jib (3) and one or multiple counterweight blocks (4) which can be hooked onto the carrier bar (2), and one or multiple insertion rods (5),
characterized in thata) the carrier bar (2) is arranged horizontally and substantially perpendicular to the longitudinal axis of the counter jib (3),b) the connection of the carrier bar (2) to the counter jib (3) comprises two connecting struts (6), which are arranged perpendicular to the carrier bar (2) and parallel to each other,c) the counter weight fixing device (1) comprises a transverse strip (7) which is arranged parallel to the carrier bar (2), wherein the transverse strip (7) has recesses (8a) for accommodating the insertion rods (5),d) the counterweight blocks (4) have a substantially U-shaped cross section, wherein the opening (9) in the U-shape enables that the counterweight blocks (4) can be hooked onto the carrier rod (2), and wherein the counterweight blocks (4) have recesses (8b) for accommodating the insertion rods (5) on the narrow side (10) thereof, which is directed toward the counter jib (3) in the hooked in state of the counterweight blocks (4). - The counterweight fixing device according to Claim 1,
characterized in that the connecting struts (6) lie parallel to the longitudinal axis of the counter jib (3). - The counterweight fixing device (1) according to Claim 1 or 2,
characterized in that the carrier bar (2) is a round tube. - The counterweight fixing device (1) according to one of the preceding claims,
characterized in that the counterweight blocks each have two legs (11a, 11b), wherein the center of gravity of the counterweight blocks (4) is located on the side of the leg (11a) which is closer to the counter jib than the other leg (11b). - The counterweight fixing device (1) according to one of the preceding claims,
characterized in that the opening (9) in the U-shape of the counterweight blocks (4) has a greater diameter at the open end of the opening than at the closed end of the opening, wherein the opening (9) preferably tapers from the open end of the opening to the closed end of the opening. - The counterweight fixing device (1) according to one of the preceding claims,
characterized in that the connecting struts (6) are each arranged with one end thereof on an end of the carrier rod (2). - The counterweight fixing device (1) according to one of the preceding claims,
characterized in that the recesses (8a) for accommodating the insertion rods (5) are notches on the upper side of the transverse strip (7), into which the one end of an insertion rod (5) is placed, which end is not inserted into a counterweight block (4), and wherein a fixing device (12), preferably a locking bar, is provided for fixing the insertion rods (5) in the notches. - The counterweight fixing device (1) according to one of Claims 1 through 6,
characterized in that the recesses (8a) for accommodating the insertion rods (5) in the transverse strip (7) pass through from one side of the transverse strip (7) to the diametrically opposite side of the transverse strip (7) and the insertion rods (5) are fixed on the transverse strip (7). - The counterweight fixing device (1) according to one of the preceding claims,
characterized in that the length of an insertion rod (5) corresponds substantially to the sum of the lengths of the recesses for an insertion rod (5) in a counterweight block (4) and in the transverse strip (7).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011118926A DE102011118926B3 (en) | 2011-11-21 | 2011-11-21 | Counterweight fixation |
PCT/EP2012/004800 WO2013075816A1 (en) | 2011-11-21 | 2012-11-20 | Counterweight fixing device |
Publications (2)
Publication Number | Publication Date |
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EP2782864A1 EP2782864A1 (en) | 2014-10-01 |
EP2782864B1 true EP2782864B1 (en) | 2016-03-16 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12791432.3A Active EP2782864B1 (en) | 2011-11-21 | 2012-11-20 | Counterweight fixing device |
Country Status (12)
Country | Link |
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US (1) | US9457997B2 (en) |
EP (1) | EP2782864B1 (en) |
AU (1) | AU2012342832B2 (en) |
BR (1) | BR112014012186B1 (en) |
CA (1) | CA2856318C (en) |
DE (1) | DE102011118926B3 (en) |
ES (1) | ES2574842T3 (en) |
HK (1) | HK1197397A1 (en) |
IN (1) | IN2014KN01065A (en) |
SG (1) | SG11201402494SA (en) |
WO (1) | WO2013075816A1 (en) |
ZA (1) | ZA201403424B (en) |
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DE102015008771A1 (en) * | 2015-07-06 | 2017-01-12 | Liebherr-Werk Biberach Gmbh | tower crane |
CN107686065A (en) * | 2017-09-13 | 2018-02-13 | 谭高丰 | A kind of derrick crane self-balancing control method and device |
CN112897367B (en) * | 2019-11-19 | 2023-06-23 | 湖南中联重科建筑起重机械有限责任公司 | Counterweight holding rack, counterweight assembly and counterweight arm mechanism |
CN112729897B (en) * | 2020-12-22 | 2022-07-19 | 自然资源部第一海洋研究所 | Efficient gravity vibration composite deep sea column sampler |
Family Cites Families (15)
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FR1327410A (en) * | 1962-06-01 | 1963-05-17 | Schwermaschb Kirow Veb | Device for installing counterweights on jib cranes |
DE1781137A1 (en) * | 1968-08-29 | 1970-09-24 | Krupp Gmbh | Truck crane |
DE1937349B2 (en) * | 1969-07-23 | 1973-08-23 | Leo Gottwald KG, 4000 Dusseldorf | CRANE WITH ROTATING UPPER CARRIAGE |
US3851767A (en) * | 1970-02-13 | 1974-12-03 | Richier Sa | Tower cranes |
JP3061579B2 (en) * | 1996-12-06 | 2000-07-10 | 株式会社加藤製作所 | Crane counter weight |
US5833268A (en) * | 1996-12-06 | 1998-11-10 | Aldrovandi; Louis | Counterweight hoisting mechanism |
US5799806A (en) * | 1997-01-31 | 1998-09-01 | Skyjack Equipment Inc. | Lifting device with counterweight |
US7128479B2 (en) * | 2004-03-01 | 2006-10-31 | Chapman/Leonard Studio Equipment | Telescoping camera crane |
US7121745B2 (en) * | 2004-03-01 | 2006-10-17 | Chapman/Leonard Studio Equipment | Telescoping camera crane |
US7354066B2 (en) * | 2004-07-07 | 2008-04-08 | Hitachi Sumitomo Heavy Industries Construction Crane Co., Ltd. | Counterweight device for construction machinery |
FR2899217B1 (en) * | 2006-03-30 | 2008-09-12 | Potain Soc Par Actions Simplif | "ASSEMBLY CONSISTING OF A COUNTER-ARROW AND ITS LEST, FOR CRANE A TOUR" |
US7467722B2 (en) * | 2006-08-31 | 2008-12-23 | Ramun John R | Counterweight for heavy equipment |
CN103298728B (en) * | 2011-07-05 | 2015-04-08 | 天宝导航有限公司 | Crane maneuvering assistance |
DE102012006494B4 (en) * | 2012-03-30 | 2014-03-13 | Manitowoc Crane Group France Sas | Mobile crane with decoupling counterweight arrangement |
US9632165B2 (en) * | 2012-06-15 | 2017-04-25 | LC&T Builder (1971) Pte Ltd | System and method for identifying and tracking 3D location of precast components |
-
2011
- 2011-11-21 DE DE102011118926A patent/DE102011118926B3/en not_active Expired - Fee Related
-
2012
- 2012-11-20 CA CA2856318A patent/CA2856318C/en active Active
- 2012-11-20 US US14/359,185 patent/US9457997B2/en active Active
- 2012-11-20 ES ES12791432.3T patent/ES2574842T3/en active Active
- 2012-11-20 EP EP12791432.3A patent/EP2782864B1/en active Active
- 2012-11-20 BR BR112014012186-9A patent/BR112014012186B1/en active IP Right Grant
- 2012-11-20 WO PCT/EP2012/004800 patent/WO2013075816A1/en active Application Filing
- 2012-11-20 AU AU2012342832A patent/AU2012342832B2/en active Active
- 2012-11-20 IN IN1065KON2014 patent/IN2014KN01065A/en unknown
- 2012-11-20 SG SG11201402494SA patent/SG11201402494SA/en unknown
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2014
- 2014-05-14 ZA ZA2014/03424A patent/ZA201403424B/en unknown
- 2014-10-31 HK HK14110958.3A patent/HK1197397A1/en unknown
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SG11201402494SA (en) | 2014-09-26 |
RU2014124036A (en) | 2015-12-27 |
WO2013075816A1 (en) | 2013-05-30 |
IN2014KN01065A (en) | 2015-10-09 |
ZA201403424B (en) | 2015-06-24 |
AU2012342832B2 (en) | 2015-11-26 |
US20140299563A1 (en) | 2014-10-09 |
EP2782864A1 (en) | 2014-10-01 |
CA2856318A1 (en) | 2013-05-30 |
CA2856318C (en) | 2017-03-21 |
ES2574842T3 (en) | 2016-06-22 |
BR112014012186B1 (en) | 2021-04-06 |
BR112014012186A2 (en) | 2017-05-30 |
US9457997B2 (en) | 2016-10-04 |
AU2012342832A1 (en) | 2014-06-12 |
HK1197397A1 (en) | 2015-01-16 |
DE102011118926B3 (en) | 2013-05-16 |
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