EP1928778B1 - Crane, in particular mobile crane with a narrow track and enlarged supporting base - Google Patents

Crane, in particular mobile crane with a narrow track and enlarged supporting base Download PDF

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Publication number
EP1928778B1
EP1928778B1 EP06775898A EP06775898A EP1928778B1 EP 1928778 B1 EP1928778 B1 EP 1928778B1 EP 06775898 A EP06775898 A EP 06775898A EP 06775898 A EP06775898 A EP 06775898A EP 1928778 B1 EP1928778 B1 EP 1928778B1
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EP
European Patent Office
Prior art keywords
crane
outriggers
undercarriage
supports
support
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EP06775898A
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German (de)
French (fr)
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EP1928778A2 (en
Inventor
Günter Karp
Fritz-Botho Köster
Rüdiger Zollondz
Alfons Weckbecker
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Tadano Demag GmbH
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Terex Demag GmbH
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Priority to EP09006475A priority Critical patent/EP2088115B1/en
Publication of EP1928778A2 publication Critical patent/EP1928778A2/en
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    • 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
    • B66C23/78—Supports, e.g. outriggers, for mobile cranes
    • B66C23/80—Supports, e.g. outriggers, for mobile cranes hydraulically actuated

Definitions

  • the invention relates to a crane according to the preamble of claim 1.
  • Cranes with rubber-tired chassis are usually equipped with supports (see FIG. 9 ).
  • the lifting of loads is usually only possible when the crane stands on the supports.
  • Cranes with crawler tracks usually have no supports, but lift loads on the caterpillars and can usually also move with the load.
  • caterpillar cranes can also be equipped with supports.
  • the most important components of the undercarriage of the Demag CC / PC 3800 are in FIG. 10 shown schematically, wherein the direction of travel is indicated by the arrow 1.
  • Four arms 4 extend from the turning center 2 to the caterpillars 3.
  • Four supports 5 are fastened to the outsides of the caterpillars.
  • Such a crane can be operated standing on the caterpillars as well as standing on the supports.
  • FIG. 11 shows an undercarriage similar FIG. 10 , Here the caterpillars are connected to each other via a central piece 6. This center piece is the usual construction for a crawler crane without supports. In the middle of the track carrier is usually enough space. Therefore, the assembly and the bolting of the components is relatively unproblematic.
  • the invention has for its object to equip a crane, in particular a mobile crane on narrow-building crawler undercarriage in such a way with supports that an enlarged support base is achieved.
  • a crane in particular a mobile crane, consisting of an undercarriage, a superstructure and a boom arranged thereon, wherein the superstructure is connected to the undercarriage via a rotary connection and wherein a plurality of supports are provided on the crane, the serve to increase the support base, which is characterized in that the undercarriage consists of a central piece and on two sides of the center piece of parallel crawler tracks that four supports are provided, which are connected to the undercarriage, wherein the orientation is fixed such that they each enclose an angle of 90 ° with each other, wherein two of the supports in the longitudinal direction of the undercarriage and two are aligned transversely thereto and wherein one of the lateral supports is connected with its underside with the facing crawler track and secured with the top of the centerpiece.
  • the arrangement of the supports in the longitudinal direction or transversely to the undercarriage results in a direct power flow. As a result, no avoidable moments occur. The occurring forces and stresses are smaller. Less material is needed. Weight and costs are reduced.
  • the connection point of supports to the chassis is always rectangular. This is generally easier and quicker to install than a sloping joint. Also, the space required for the connection is lower.
  • the supports are arranged parallel to the caterpillars and perpendicular to the caterpillars and intersect at the center of rotation.
  • the concrete design may differ. However, it is true that the ends of the supports are transverse to the direction of travel outside the track and that the supports lie along the direction of travel within the track.
  • connection of the supports to the undercarriage can be carried out according to an embodiment in that of the transversely oriented supports at least one is attached directly to the crawler chassis.
  • the supports in the longitudinal direction can be attached directly to the center piece, or attached to the centerpiece facing side of the crawler chassis, or to center and crawler chassis.
  • the supports can be designed to be telescopic, can be folded upwards or laterally.
  • the contact to the support surface producing support cylinders are arranged.
  • a particular embodiment, which is advantageous both for stationary cranes and for mobile cranes, is that at least one of the supports is designed as a two-point tilting edge.
  • a cross member may be attached to the head of the support and at a distance from each other two support cylinders are provided on the cross member.
  • the support cylinders may for example be hydraulically or by means of a spindle drive extendable.
  • a further support cylinder may be arranged at the head of the support centrally between the support cylinders arranged on the cross member.
  • the support cylinders can - according to another embodiment - be connected at their free ends via ball joints with a support mat and it is possible that one of the cross member arranged support cylinder is rotatably mounted about its longitudinal axis in this, in order to exclude any Verzwfitungs technology.
  • the crane has four supports. Seen in the direction of travel shows a support 8 forward and is within the track. A support 9 points to the rear and lies within the track. A support 10 points to the left and is out of the track. A support 11 points to the right and is out of the track. In this arrangement, all columns are claimed as pure bending beam. Also, the central piece 6 and the caterpillars 3 are not subjected to torsion. The connection of the supports 17 to 20 to the caterpillars 11 and to the middle piece 6 happen in each case vertically and in places with sufficient space.
  • FIG. 2 shows a crane according to the invention seen from behind.
  • the superstructure 12 with boom 13 and counterweight 14 is rotatably connected via a rotary joint 15 with the center piece 6.
  • the columns can be relatively long in this arrangement, whereby large moments occur in the supports. Since the left support 10 are passed through the bead 3, the height of the support 10 is limited by the height of the beads.
  • the type of connection of the right support 11 removes this restriction.
  • the underside of the support 11 is connected to the right-hand caterpillar. The top is struck against the center piece 6.
  • the rear support 9 is attached only to the center piece. To reduce the moment in the support, like the front support 8, it can be attached to both the center piece and the caterpillars. Of course, it is also possible to attach the supports 8, 9 only to the caterpillars.
  • FIG. 3 shows a further advantageous embodiment.
  • a support 16 is designed such that a tilting edge is formed on the support. Based on FIGS. 4 and 5 the advantage is explained.
  • FIG. 4 schematically four supports 17 are shown, which are arranged centrally to the center of rotation 2.
  • the connecting line 18 between the ends of each two adjacent supports is referred to as tilting edge 18.
  • a support 16 FIGS. 4 and 5
  • FIG. 6 shows a typical conventional support.
  • a hydraulic cylinder 21 is mounted, which is connected via a ball joint 22 with a support plate 23.
  • the ball joint ensures that small uneven floors are compensated.
  • a support according to the invention must at the end of a Have tilting edge.
  • FIG. 7 One possible copy ( FIG. 7 ) consists of a support with a support cylinder 21 and two additional supports 24 which are mounted laterally in the front region of the support beam 20 on a cross member 25. In normal crane operation, the middle support cylinder 21 is used. To activate the additional support edge, the lateral supports 24 are extended. This can be done hydraulically or by spindle drive.
  • FIG. 8 Another embodiment shows FIG. 8 , In the front area, two support cylinders 26, 27 are attached to a transverse bar 29. About ball joints they are connected to a support mat 28. To exclude Verzwteilungs theory, one of the cylinder 27 is rotatably mounted in the crossbar 29. When the additional tilting edge is activated, the hydraulic oil is locked in the cylinders. The arrangement is then rigid. In normal crane operation (standard support base), the cylinders are hydraulically balanced so that oil can flow freely from one cylinder to the other. Thus, the support mat is rotatable about a point between the cylinders. This possibility of being able to switch between normal operation and operation with extended tilting edge is not absolutely necessary. However, this ensures that the ground pressure distribution under the support mat 28 is uniform.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Valve Device For Special Equipments (AREA)
  • Vehicle Body Suspensions (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

The crane (4) has a truck, a revolving super structure and a jib arranged in a super structure. The superstructure is connected to the truck by a rotary connection. Crawlers are arranged parallel to each other at two sides of a centre piece (6). Four supports (17-20) are connected with the truck. The arrangements of the supports are fixed such that two of the supports are aligned longitudinal to a driving direction within a track of the truck and other two supports are aligned transverse to the driving direction outside the track of the truck.

Description

Die Erfindung betrifft einen Kran gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a crane according to the preamble of claim 1.

Krane mit gummibereiftem Fahrwerk sind in der Regel mit Stützen ausgestattet (siehe Figur 9). Das Heben von Lasten ist in der Regel nur möglich, wenn der Kran auf den Stützen steht. Krane mit Raupenfahrwerk haben meist keine Stützen, sondern heben Lasten auf den Raupen stehend und können meist auch mit der Last verfahren. Um eine größere Stützbasis zu erhalten, können auch Raupenkrane zusätzlich mit Stützen ausgestattet werden. Die wichtigsten Komponenten des Unterwagens des Demag CC/PC 3800 sind in Figur 10 schematisch dargestellt, wobei die Fahrtrichtung durch den Pfeil 1 angedeutet ist. Von der Drehmitte 2 reichen vier Arme 4 zu den Raupen 3. An den Außenseiten der Raupen sind vier Stützen 5 befestigt. Ein solcher Kran kann sowohl auf den Raupen stehend, als auch auf den Stützen stehend betrieben werden. Diese Anordnung hat im Betrieb auf Stützen einen direkten Kraftverlauf, was erstrebenswert ist. Allerdings müssen die Kräfte und Momente durch die Raupen 11 durchgeleitet werden. Am Ende der Raupen befinden sich Umlenkräder, Getriebe und Kettenspanneinrichtungen. Dadurch ist es schwer, an dieser Stelle die Kräfte durchzuleiten. Figur 11 zeigt einen Unterwagen ähnlich Figur 10. Hier sind die Raupen über ein Mittelstück 6 miteinander verbunden. Dieses Mittelstück ist die übliche Konstruktion für einen Raupenkran ohne Stützen. In der Mitte des Raupenträgers ist in der Regel ausreichend Platz. Daher ist die Montage und die Verbolzung der Komponenten relativ unproblematisch.Cranes with rubber-tired chassis are usually equipped with supports (see FIG. 9 ). The lifting of loads is usually only possible when the crane stands on the supports. Cranes with crawler tracks usually have no supports, but lift loads on the caterpillars and can usually also move with the load. In order to obtain a larger support base, caterpillar cranes can also be equipped with supports. The most important components of the undercarriage of the Demag CC / PC 3800 are in FIG. 10 shown schematically, wherein the direction of travel is indicated by the arrow 1. Four arms 4 extend from the turning center 2 to the caterpillars 3. Four supports 5 are fastened to the outsides of the caterpillars. Such a crane can be operated standing on the caterpillars as well as standing on the supports. This arrangement has a direct force curve in operation on supports, which is desirable. However, the forces and moments must be passed through the tracks 11. At the end of the caterpillars there are diverters, gears and chain tensioners. This makes it difficult to pass through the forces at this point. FIG. 11 shows an undercarriage similar FIG. 10 , Here the caterpillars are connected to each other via a central piece 6. This center piece is the usual construction for a crawler crane without supports. In the middle of the track carrier is usually enough space. Therefore, the assembly and the bolting of the components is relatively unproblematic.

Im Stützenbetrieb sind die Kräfte in den Stützen in der Regel nicht gleichmäßig verteilt. Dadurch entsteht ein Torsionsmoment im Mittelstück 6 und auch in den Raupen 3. In Figur 12 sind neben dem Mittelstück 6 auch die Stützen 7 an der Raupenmitte angebracht. Dadurch werden die Raupen 3 entlastet.In column operation, the forces in the columns are usually not evenly distributed. This creates a torsional moment in the middle piece 6 and also in the beads 3. In FIG. 12 are next to the center 6 and the supports 7 attached to the caterpillar center. As a result, the caterpillars 3 are relieved.

Aus der DE 31 43 802 A1 und aus der GB 1 554 735 A ist jeweils ein Kran mit an einem Unterwagen des Krans befestigten Stützen bekannt.From the DE 31 43 802 A1 and from the GB 1 554 735 A In each case, a crane is known with supports attached to an undercarriage of the crane.

Der Erfindung liegt die Aufgabe zugrunde, einen Kran, insbesondere einen mobilen Kran auf schmalbauendem Raupenfahrwerk derart mit Stützen auszustatten, dass eine vergrößerte Stützbasis erreicht wird.The invention has for its object to equip a crane, in particular a mobile crane on narrow-building crawler undercarriage in such a way with supports that an enlarged support base is achieved.

Gelöst wird diese Aufgabe nach Anspruch 1 durch einen Kran, insbesondere einen mobilen Kran, bestehend aus einem Unterwagen, einem Oberwagen und einem darauf angeordneten Ausleger, wobei der Oberwagen mit dem Unterwagen über eine Drehverbindung verbunden ist und wobei mehrere Stützen am Kran vorgesehen sind, die zur Erhöhung der Stützbasis dienen, der dadurch gekennzeichnet ist, dass der Unterwagen aus einem Mittelstück und an zwei Seiten des Mittelstückes parallel zueinander angeordneten Raupenfahrwerken besteht, dass vier Stützen vorgesehen sind, die mit dem Unterwagen verbunden sind, wobei deren Ausrichtung derart fixiert ist, dass sie jeweils einen Winkel von 90° miteinander einschließen, wobei zwei der Stützen in Längsrichtung des Unterwagens und zwei quer dazu ausgerichtet sind und wobei eine der seitlichen Stützen mit ihrer Unterseite mit dem zugewandten Raupenfahrwerk verbunden und mit deren Oberseite am Mittelstück befestigt ist.This object is achieved according to claim 1 by a crane, in particular a mobile crane, consisting of an undercarriage, a superstructure and a boom arranged thereon, wherein the superstructure is connected to the undercarriage via a rotary connection and wherein a plurality of supports are provided on the crane, the serve to increase the support base, which is characterized in that the undercarriage consists of a central piece and on two sides of the center piece of parallel crawler tracks that four supports are provided, which are connected to the undercarriage, wherein the orientation is fixed such that they each enclose an angle of 90 ° with each other, wherein two of the supports in the longitudinal direction of the undercarriage and two are aligned transversely thereto and wherein one of the lateral supports is connected with its underside with the facing crawler track and secured with the top of the centerpiece.

Durch die Anordnung der Stützen in Längsrichtung bzw. quer zum Unterwagen ergibt sich ein direkter Kraftfluss. Dadurch treten keine vermeidbaren Momente auf. Die auftretenden Kräfte und Spannungen sind kleiner. Weniger Material wird benötigt. Gewicht und Kosten werden reduziert. Außerdem ist die Verbindungsstelle von Stützen an das Fahrwerk stets rechtwinklig. Dies ist im Allgemeinen leichter und schneller zu montieren als eine schräge Verbindungsstelle. Auch ist der Platzbedarf für die Verbindung geringer.The arrangement of the supports in the longitudinal direction or transversely to the undercarriage results in a direct power flow. As a result, no avoidable moments occur. The occurring forces and stresses are smaller. Less material is needed. Weight and costs are reduced. In addition, the connection point of supports to the chassis is always rectangular. This is generally easier and quicker to install than a sloping joint. Also, the space required for the connection is lower.

Vorzugsweise sind die Stützen parallel zu den Raupen und senkrecht zu den Raupen angeordnet und schneiden sich in der Drehmitte. Die konkrete Ausgestaltung kann davon abweichen. Es gilt jedoch, dass die Enden der Stützen quer zur Fahrtrichtung außerhalb der Spur liegen und dass die Stützen längs der Fahrtrichtung innerhalb der Spur liegen.Preferably, the supports are arranged parallel to the caterpillars and perpendicular to the caterpillars and intersect at the center of rotation. The concrete design may differ. However, it is true that the ends of the supports are transverse to the direction of travel outside the track and that the supports lie along the direction of travel within the track.

Die Anbindung der Stützen an den Unterwagen kann nach einer Ausführung dadurch erfolgen, dass von den quer ausgerichteten Stützen zumindest eine direkt am Raupenfahrwerk angebracht ist.The connection of the supports to the undercarriage can be carried out according to an embodiment in that of the transversely oriented supports at least one is attached directly to the crawler chassis.

Die Stützen in Längsrichtung können direkt am Mittelstück befestigt werden, oder an der zum Mittelstück weisenden Seite des Raupenfahrwerks, oder an Mittelstück und Raupenfahrwerk befestigt werden.The supports in the longitudinal direction can be attached directly to the center piece, or attached to the centerpiece facing side of the crawler chassis, or to center and crawler chassis.

Nach einer weiteren Ausgestaltung können die Stützen teleskopierbar ausgestaltet, nach oben oder seitlich klappbar sein.According to a further embodiment, the supports can be designed to be telescopic, can be folded upwards or laterally.

Am Kopf der Stützen sind ausfahrbare, den Kontakt zur Stützfläche herstellende Stützzylinder angeordnet.At the top of the supports extendable, the contact to the support surface producing support cylinders are arranged.

Eine besondere Ausgestaltung, die sowohl für stationäre Krane als auch für mobile Krane vorteilhaft ist, besteht darin, dass zumindest eine der Stützen als auf zwei Punkten stehende Kippkante ausgebildet ist.A particular embodiment, which is advantageous both for stationary cranes and for mobile cranes, is that at least one of the supports is designed as a two-point tilting edge.

Dabei kann am Kopf der Stütze ein Querträger befestigt sein und im Abstand voneinander sind am Querträger zwei Stützzylinder vorgesehen.In this case, a cross member may be attached to the head of the support and at a distance from each other two support cylinders are provided on the cross member.

Die Stützzylinder können beispielsweise hydraulisch oder mittels eines Spindeltriebes ausfahrbar sein.The support cylinders may for example be hydraulically or by means of a spindle drive extendable.

Schließlich kann mittig zwischen den am Querträger angeordneten Stützzylindern ein weiterer Stützzylinder am Kopf der Stütze angeordnet sein.Finally, a further support cylinder may be arranged at the head of the support centrally between the support cylinders arranged on the cross member.

Die Stützzylinder können - nach einer weiteren Ausgestaltung - an ihren freien Enden über Kugelgelenke mit einer Stützmatte verbunden sein und es ist möglich, dass einer der am Querträger angeordneten Stützzylinder um seine Längsachse drehbar in diesem gelagert ist, um eventuelle Verzwängungskräfte auszuschließen.The support cylinders can - according to another embodiment - be connected at their free ends via ball joints with a support mat and it is possible that one of the cross member arranged support cylinder is rotatably mounted about its longitudinal axis in this, in order to exclude any Verzwängungskräfte.

Die Erfindung soll nachfolgend an den Zeichnungen näher erläutert werden.The invention will be explained in more detail below with reference to the drawings.

Dabei zeigen:

Figur 1
eine Aufsicht auf das Raupenfahrwerk mit Stützen,
Figur 2
eine Ansicht von hinten,
Figur 3
eine abgewandelte Ausführung der Stützen mit Kippkante,
Figur 4 und 5
Erklärungen zur Kippkante,
Figur 6 bis 8
Ausbildungen einer Stütze, und
Figur 9 bis 12
Darstellungen zum Stand der Technik.
Showing:
FIG. 1
a view of the crawler undercarriage with supports,
FIG. 2
a view from behind,
FIG. 3
a modified version of the supports with tilting edge,
FIGS. 4 and 5
Explanations of the tilting edge,
FIGS. 6 to 8
Formations of a prop, and
FIGS. 9 to 12
Representations of the prior art.

Gemäß der Erfindung (Figur 1) besitzt der Kran vier Stützen. In Fahrtrichtung gesehen zeigt eine Stütze 8 nach vorne und liegt innerhalb der Spur. Eine Stütze 9 zeigt nach hinten und liegt innerhalb der Spur. Eine Stütze 10 zeigt nach links und liegt außerhalb der Spur. Eine Stütze 11 zeigt nach rechts und liegt außerhalb der Spur. Bei dieser Anordnung werden alle Stützen als reine Biegeträger beansprucht. Auch das Mittelstück 6 und die Raupen 3 werden nicht auf Torsion beansprucht. Der Anschluss der Stützen 17 bis 20 an die Raupen 11 bzw. an das Mittelstück 6 geschehen jeweils senkrecht und an Stellen mit ausreichend Platz.According to the invention ( FIG. 1 ) the crane has four supports. Seen in the direction of travel shows a support 8 forward and is within the track. A support 9 points to the rear and lies within the track. A support 10 points to the left and is out of the track. A support 11 points to the right and is out of the track. In this arrangement, all columns are claimed as pure bending beam. Also, the central piece 6 and the caterpillars 3 are not subjected to torsion. The connection of the supports 17 to 20 to the caterpillars 11 and to the middle piece 6 happen in each case vertically and in places with sufficient space.

Figur 2 zeigt einen erfindungsgemäßen Kran von hinten gesehen. Der Oberwagen 12 mit Ausleger 13 und Gegengewicht 14 ist über eine Drehverbindung 15 mit dem Mittelstück 6 drehbar verbunden. Wie in Figur 2 zu sehen ist, können bei dieser Anordnung die Stützen relativ lang werden, wodurch große Momente in den Stützen auftreten. Da die linke Stütze 10 durch die Raupe 3 hindurchgeführt werden, ist die Höhe der Stütze 10 durch die Höhe der Raupen begrenzt. FIG. 2 shows a crane according to the invention seen from behind. The superstructure 12 with boom 13 and counterweight 14 is rotatably connected via a rotary joint 15 with the center piece 6. As in FIG. 2 can be seen, the columns can be relatively long in this arrangement, whereby large moments occur in the supports. Since the left support 10 are passed through the bead 3, the height of the support 10 is limited by the height of the beads.

Die Art der Anbindung der rechten Stütze 11 hebt diese Beschränkung auf. Die Unterseite der Stütze 11 wird mit der rechten Raupe verbunden. Die Oberseite wird an das Mittelstück 6 angeschlagen.The type of connection of the right support 11 removes this restriction. The underside of the support 11 is connected to the right-hand caterpillar. The top is struck against the center piece 6.

Falls die Stützen 10, 11 mit dem Mittelstück verbunden werden, muss diese Verbindung zwischen der Drehverbindung und der Verbindung zu den Raupen liegen. Die hintere Stütze 9 ist nur am Mittelstück befestigt. Um das Moment in der Stütze zu reduzieren, kann sie wie die vordere Stütze 8 sowohl am Mittelstück, als auch an den Raupen befestigt werden. Selbstverständlich ist es auch möglich, die Stützen 8, 9 nur an den Raupen zu befestigen.If the supports 10, 11 are connected to the center piece, this connection must be between the rotary joint and the connection to the beads. The rear support 9 is attached only to the center piece. To reduce the moment in the support, like the front support 8, it can be attached to both the center piece and the caterpillars. Of course, it is also possible to attach the supports 8, 9 only to the caterpillars.

Figur 3 zeigt eine weitere vorteilhafte Ausführungsform. Eine Stütze 16 wird derart gestaltet, so dass eine Kippkante an der Stütze entsteht. Anhand der Figuren 4 und 5 wird der Vorteil erläutert. In Figur 4 sind schematisch vier Stützen 17 dargestellt, die zentrisch zur Drehmitte 2 angeordnet sind. Die Verbindungslinie 18 zwischen den Enden je zwei benachbarter Stützen wird als Kippkante 18 bezeichnet. Sollte der Kran seine Standsicherheit verlieren (Unfall), würde er über diese Kante 18 kippen. Wird eine Stütze 16 (Figuren 4 und 5) so ausgeführt, dass sie auf zwei Punkten steht, entsteht eine Kippkante 19, die einen größeren Abstand zur Drehmitte aufweist als die herkömmlichen Kippkanten 18. Dadurch ergibt sich ein erhöhtes Lastmoment, wenn der Ausleger über dieser Stütze steht. Dieses erhöhte Lastmoment kann genutzt werden, um besonders schwere Hübe durchzuführen oder um besonders lange Ausleger vom Boden aufzurichten. FIG. 3 shows a further advantageous embodiment. A support 16 is designed such that a tilting edge is formed on the support. Based on FIGS. 4 and 5 the advantage is explained. In FIG. 4 schematically four supports 17 are shown, which are arranged centrally to the center of rotation 2. The connecting line 18 between the ends of each two adjacent supports is referred to as tilting edge 18. Should the crane lose its stability (accident), it would tip over this edge 18. If a support 16 ( FIGS. 4 and 5 ) designed so that it is on two points, creates a tilting edge 19, which has a greater distance from the center of rotation than the conventional tilting edges 18. This results in an increased load torque when the boom is above this support. This increased load torque can be used to perform particularly heavy strokes or to erect extra long boom from the ground.

Anhand der Figuren 6, 7 und 8 werden mögliche Ausführungsformen derartiger Stützen erläutert. Figur 6 zeigt eine typische herkömmliche Stütze. Am Ende des Stützträgers 20 ist ein Hydraulikzylinder 21 angebracht, der über ein Kugelgelenk 22 mit einem Stützteller 23 verbunden ist. Durch das Kugelgelenk wird sichergestellt, dass kleine Bodenunebenheiten ausgeglichen werden. Eine erfindungsgemäße Stütze muss an deren Ende eine Kippkante aufweisen. Eine mögliche Ausfertigung (Figur 7) besteht aus einer Stütze mit einem Stützzylinder 21 und zwei zusätzlichen Stützen 24, die seitlich im vorderen Bereich des Stützträgers 20 an einem Querträger 25 angebracht werden. Im normalen Kranbetrieb wird der mittlere Stützzylinder 21 verwendet. Um die zusätzliche Stützkante zu aktivieren, werden die seitlichen Stützen 24 ausgefahren. Dies kann hydraulisch oder mittels Spindelantrieb geschehen. Auch klappbare oder steckbare Stützen sind möglich. Eine andere Ausführungsform zeigt Figur 8. Im vorderen Bereich sind zwei Stützzylinder 26, 27 an einem Querbalken 29 angebracht. Über Kugelgelenke sind sie mit einer Stützmatte 28 verbunden. Um Verzwängungskräfte auszuschließen, ist einer der Zylinder 27 drehbar im Querbalken 29 gelagert. Bei aktivierter zusätzlicher Kippkante wird das Hydrauliköl in den Zylindern eingesperrt. Die Anordnung ist dann starr. Im normalen Kranbetrieb (Standard-Stützbasis) werden die Zylinder hydraulisch gleichgeschaltet, so dass Öl ungehindert von einem Zylinder in den anderen fließen kann. Damit ist die Stützmatte um einen Punkt zwischen den Zylindern drehbar. Diese Möglichkeit, zwischen normalem Betrieb und Betrieb mit erweiterter Kippkante umschalten zu können, ist nicht zwingend notwendig. Dadurch wird allerdings gewährleistet, dass die Bodendruckverteilung unter der Stützmatte 28 gleichmäßig ist.Based on FIGS. 6, 7 and 8 Possible embodiments of such supports are explained. FIG. 6 shows a typical conventional support. At the end of the support beam 20, a hydraulic cylinder 21 is mounted, which is connected via a ball joint 22 with a support plate 23. The ball joint ensures that small uneven floors are compensated. A support according to the invention must at the end of a Have tilting edge. One possible copy ( FIG. 7 ) consists of a support with a support cylinder 21 and two additional supports 24 which are mounted laterally in the front region of the support beam 20 on a cross member 25. In normal crane operation, the middle support cylinder 21 is used. To activate the additional support edge, the lateral supports 24 are extended. This can be done hydraulically or by spindle drive. Also foldable or plug-in supports are possible. Another embodiment shows FIG. 8 , In the front area, two support cylinders 26, 27 are attached to a transverse bar 29. About ball joints they are connected to a support mat 28. To exclude Verzwängungskräfte, one of the cylinder 27 is rotatably mounted in the crossbar 29. When the additional tilting edge is activated, the hydraulic oil is locked in the cylinders. The arrangement is then rigid. In normal crane operation (standard support base), the cylinders are hydraulically balanced so that oil can flow freely from one cylinder to the other. Thus, the support mat is rotatable about a point between the cylinders. This possibility of being able to switch between normal operation and operation with extended tilting edge is not absolutely necessary. However, this ensures that the ground pressure distribution under the support mat 28 is uniform.

Claims (8)

  1. Crane, in particular a mobile crane, consisting of an undercarriage, a superstructure (12) and a boom (13) mounted thereon,
    - wherein the superstructure is connected to the undercarriage by a rotary joint (15),
    - wherein several outriggers (8-11, 16, 20) are provided on the crane for elevating the support base,
    - wherein the undercarriage consists of a middle section and two chassis arranged parallel on two sides of the middle section,
    - wherein four outriggers are provided, which are connected to the undercarriage, wherein their orientation is fixed in such a way that two of the outriggers are oriented in the longitudinal direction (1) inside the track of the undercarriage and two are oriented transversely outside the track of the undercarriage,
    characterized in that the chassis are crawler chassis and at least one of the lateral outriggers (11) is connected by its bottom surface to the facing side of the crawler chassis, whereas its top surface is attached to the middle section.
  2. Crane according to one of the preceding claims, characterized in that, of the transversely oriented outriggers, at least one is attached directly to the crawler chassis.
  3. Crane according to one of the preceding claims, characterized in that, of the outriggers oriented in the longitudinal direction of the undercarriage, at least one is attached to the middle section.
  4. Crane according to one of the preceding claims, characterized in that, of the outriggers oriented in the longitudinal direction of the undercarriage, at least one is attached both to the middle section and to the crawler chassis.
  5. Crane according to one of the preceding claims, characterized in that, of the outriggers oriented in the longitudinal direction of the undercarriage, at least one is attached to the sides of the crawler chassis facing the middle section.
  6. Crane according to one of the preceding claims, characterized in that the outriggers are telescoping.
  7. Crane according to one of the preceding claims, characterized in that the outriggers can be folded upward or to the side.
  8. Crane according to one of the preceding claims, characterized in that extendable outriggers cylinders are mounted at the ends of the outriggers to make contact with the support surface.
EP06775898A 2005-09-28 2006-08-22 Crane, in particular mobile crane with a narrow track and enlarged supporting base Active EP1928778B1 (en)

Priority Applications (1)

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EP09006475A EP2088115B1 (en) 2005-09-28 2006-08-22 Crane

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005047745A DE102005047745A1 (en) 2005-09-28 2005-09-28 Movable crane e.g. crawler crane, for lifting load, has four supports, in which two supports are aligned longitudinal to driving direction within track of truck and other supports are aligned transverse to driving direction outside track
PCT/DE2006/001479 WO2007036188A2 (en) 2005-09-28 2006-08-22 Crane, in particular mobile crane with a narrow track and enlarged supporting base

Related Child Applications (2)

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EP09006475A Division EP2088115B1 (en) 2005-09-28 2006-08-22 Crane
EP09006475A Division-Into EP2088115B1 (en) 2005-09-28 2006-08-22 Crane

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EP1928778A2 EP1928778A2 (en) 2008-06-11
EP1928778B1 true EP1928778B1 (en) 2010-02-10

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EP06775898A Active EP1928778B1 (en) 2005-09-28 2006-08-22 Crane, in particular mobile crane with a narrow track and enlarged supporting base

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EP (2) EP2088115B1 (en)
JP (1) JP5405112B2 (en)
CN (1) CN101277894B (en)
AT (2) ATE457294T1 (en)
CA (1) CA2623713A1 (en)
DE (4) DE102005047745A1 (en)
ES (2) ES2339155T3 (en)
WO (1) WO2007036188A2 (en)

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Also Published As

Publication number Publication date
EP2088115A2 (en) 2009-08-12
ES2352640T3 (en) 2011-02-22
DE502006006122D1 (en) 2010-03-25
ATE457294T1 (en) 2010-02-15
JP2009509888A (en) 2009-03-12
DE502006008304D1 (en) 2010-12-23
ATE487675T1 (en) 2010-11-15
EP2088115A3 (en) 2009-08-19
WO2007036188A3 (en) 2007-05-18
WO2007036188A2 (en) 2007-04-05
JP5405112B2 (en) 2014-02-05
DE102005047745A1 (en) 2007-03-29
EP2088115B1 (en) 2010-11-10
CN101277894B (en) 2011-12-28
US20090107946A1 (en) 2009-04-30
US8499945B2 (en) 2013-08-06
CA2623713A1 (en) 2007-04-05
CN101277894A (en) 2008-10-01
US8225947B2 (en) 2012-07-24
EP1928778A2 (en) 2008-06-11
US20100320166A1 (en) 2010-12-23
ES2339155T3 (en) 2010-05-17
DE202006020705U1 (en) 2009-08-13

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