EP1323871B1 - Outrigger device for working machines such as hydraulic excavators or the like - Google Patents
Outrigger device for working machines such as hydraulic excavators or the like Download PDFInfo
- Publication number
- EP1323871B1 EP1323871B1 EP20020028802 EP02028802A EP1323871B1 EP 1323871 B1 EP1323871 B1 EP 1323871B1 EP 20020028802 EP20020028802 EP 20020028802 EP 02028802 A EP02028802 A EP 02028802A EP 1323871 B1 EP1323871 B1 EP 1323871B1
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- European Patent Office
- Prior art keywords
- supporting
- articulated
- gear
- supporting legs
- pivoting
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/08—Superstructures; Supports for superstructures
- E02F9/085—Ground-engaging fitting for supporting the machines while working, e.g. outriggers, legs
Definitions
- the present invention relates to a supporting device for construction machines such as hydraulic excavators and the like, with a support foot which is pivotally articulated on a machine-side support piece, preferably the vehicle frame or the chassis, and a pivot drive for swinging out and in of the outrigger, wherein the outrigger of several Support legs is made, which are mounted extendable to each other in the manner of a telescope, wherein the support legs a locking device for locking the support legs in at least one position relative to each other, in particular in the extended position assigned.
- Outriggers for construction equipment have already become known in various designs. However, these are still able to be improved. In particular, in known supporting devices, the enlargement of the effective support width by the extension of the outriggers is still not large enough. If the outriggers, however, made very long and thus far swing out, collision problems arise z. B. with the superstructure of the hydraulic excavator.
- a supporting device of the type mentioned is from the FR 26 00 599 known, which shows a pivotable support leg, which is retractable in a pivotally articulated pivot piece.
- the support legs are telescoped. On the other hand, they are swung out. On the one hand this creates a wide cantilever and thus a broad support base in the extended state, on the other hand, the support device can be pushed together or retracted in the retracted state into a compact, small-sized configuration, so that collision problems z. B. are minimized with the rotating superstructure and the like.
- the present invention is therefore an object of the invention to provide an improved supporting device of the type mentioned above, which avoids the disadvantages of the prior art and the latter further develops in an advantageous manner.
- a simple actuating drive a precise despite the several degrees of freedom retraction and extension can be achieved without generating collision problems of the support device.
- the support legs of the outrigger be telescoped automatically when swinging out and the support foot.
- a mechanical positive control indicates the extended position of the support legs to each other depending on the pivot position of the outrigger.
- the telescopic drive is actuated by the rotary actuator or is coupled to this, so that automatically extend the support legs when the outrigger is swung out and vice versa.
- Such a forced control ensures that when Nachobenschwenken the outrigger no collision with overlying components of the construction machine such.
- a linkage in particular a slider crank mechanism is provided, which is constructed in the manner of a two-bladed and is actuated by pivoting the support foot.
- a first transmission element may preferably be hinged on the inside of a first of the two support legs pivotally, while a second transmission element, which is pivotally connected to the first transmission element, preferably can be pivoted on the second of the two support legs also pivotable in the interior.
- the second support leg extends or retracts relative to the first one.
- one of the two transmission elements is designed as a driving crank.
- a swivel drive element which is connected on the one hand to the said transmission element and on the other hand is hinged on the support side and during pivoting of the support foot executes a pivotal or rotary movement relative to the first support leg.
- a pivot drive element can be provided on the machine side firmly arranged gear profile, in particular a rotationally fixed on the pivot axis of the outrigger with the retaining piece seated gear.
- the first of the two gear elements of the joint gear is provided around its pivot axis with a corresponding gear profile, so that it rolls on the machine side fixed gear profile when the outrigger is pivoted.
- a pressure medium piston-cylinder unit is preferably provided, which is articulated on the one hand on the support foot and on the other side of the machine, preferably on the support piece on which the support foot is pivotally mounted.
- the articulation of the piston-cylinder unit on the outrigger can be provided on different support legs of the outrigger.
- the piston-cylinder unit is articulated to the first support leg, which is pivotally mounted on the machine-side support piece, so that with small strokes of the piston-cylinder unit, a relatively large pivotal movement of the outrigger can be realized.
- the articulation point may be arranged closer to the pivot axis of the outrigger than towards the free end of the first support leg.
- the support foot can basically consist of different numbers of support legs. According to a preferred embodiment of the invention, two support legs are provided, d. H. a first support leg which is pivotally hinged to the support piece, and a second support leg which is telescopically mounted on the second support leg.
- the locking device can be formed positively acting and manually operable.
- holes can be provided in the support legs, which are aligned with each other with a corresponding position of the support legs, so that a locking pin can be inserted into the aligned holes and thus the support legs are locked to each other in the respective austeleskop faced position.
- a plurality of pairs of holes may be provided, which are aligned with each other in different extension positions.
- the telescopic drive for extending and retracting the support legs can be arranged in the interior of the support legs.
- the telescopic drive simultaneously forms the locking device which fixes the support legs in the respective position.
- a self-locking threaded spindle can be provided.
- the locking device acts on the telescopic drive and thus only indirectly on the support legs, so that with small locking forces only the telescopic drive needs to be maintained and thus still a safe determination of the support legs can be achieved.
- the linkage is preferably designed such that it assumes a stretched position in the extended position of the support legs, d. H.
- the two pivotally interconnected gear elements essentially define a straight line. If necessary, they can also assume a slightly overstretched position.
- a gear stop is provided which defines the stretched position or the slightly overstretched position of the gear elements. Against this gear stop drive one or both of the transmission elements when they reach the stretched position.
- a spring device may be provided which biases the linkage in its extended position.
- the gear element acting as a crank has an oblong hole for forming the articulated connection with the other gear element, so that it can be brought into an overstretched position.
- the in FIG. 1 shown support foot 1 consists of two support legs 2 and 3, which are telescoped in the manner of a telescope.
- the first support leg 2 is pivotally mounted with its one end about a horizontal axis on the machine-side support piece 4.
- the pivot connection can be realized by a bolt passing through the support piece 4 and the support leg 2, which defines the pivot axis 5 of the support foot 1.
- the support foot 1 is pivotable between two positions, between a substantially vertically upwardly rest position and an obliquely outwardly and downwardly facing support position in which the support foot includes an acute angle to the horizontal, the 45 degrees or less can amount.
- a hydraulic cylinder 7 is provided as a pivot drive 6, which is articulated with its piston rod to the first support leg 2 and is articulated with its cylinder on the support piece 4.
- the articulation or pivot axes of the hydraulic cylinder 7 are parallel to the pivot axis 5 of the outrigger 1.
- the arrangement of the hydraulic cylinder 7 is made according to Figure 1 such that the orientation of its longitudinal axis in the pivoted position of the outrigger 1 is approximately parallel to the longitudinal axis of the outrigger , in the raised position of the outrigger 1, the hydraulic cylinder 7 is with its longitudinal axis - roughly speaking - approximately perpendicular to the outrigger. 1
- the support legs 2 and 3 are manually on and telescoped.
- a locking device is a detachable connection, z. B. plug pin connection provided.
- a first bore or a first alignment of the hole pair is provided in the first support leg 2.
- a plurality of spaced apart in the longitudinal direction of the support leg second holes 9 are provided, which are aligned in a corresponding position of the second support leg 3 with the first holes 8.
- a locking pin 10 can be pushed through the aligned pairs of holes to lock the support legs 2 and 3 together.
- a support plate 11 is pivotally connected about a pivot axis 12. Said pivot axis 12 is parallel to the pivot axis 5 of the outrigger 1. Due to gravity, the uprising plate 11 is substantially always in horizontal alignment when the outrigger is swung out.
- a threaded spindle could be integrated in these, by means of which the support legs could be telescoped.
- the threaded spindle could be provided alternatively or in addition to the socket pin connection.
- FIG. 2 shown support foot 1 basically has the same structure as the outrigger of the previously described embodiment.
- the execution according to FIG. 2 differs from the previous one by a telescoping drive, the off automatically and telescopically the support legs 2 and 3 during extension and pivoting of the outrigger 1.
- the telescopic drive 13 according to FIG. 2 is designed as a linkage, which is integrated in the support foot 1, that is arranged in the interior of the support legs 2 and 3.
- a first coupling member 14 is pivotally hinged to the first support leg 2, namely about a pivot axis 5 of the support foot 1 parallel articulation axis 15, which is in the immediate vicinity of said pivot axis 5 of the outrigger 1 (see. FIG. 2 ).
- a second coupling member 16 is pivoted on the second support leg 3, namely about a pivot axis 5 of the support foot 1 also parallel pivot axis 17.
- the two coupling members 14 and 16 are directly connected to each other by a hinge 18. They form a planar linkage. In this case, the first coupling member 14 forms the crank of the transmission.
- the arrangement of the two coupling members 14 and 16 is made such that in the downwardly pivoted position of the support foot 1, the two coupling members 14 and 16 occupy an extended position and define a straight line substantially. In the upwardly pivoted position of the support foot 1, the two coupling members 14 and 16 are pivoted together.
- the ratio of the two gears 19 and 20 is made such that in the upwardly pivoted position of the outrigger 1, the two coupling members 14 and 16 preferably occupy an acute angle to each other. In this way, a further extension path of the support legs 2 and 3 can be achieved with short coupling links.
- the achievable thrust stroke of the linkage is utilized to the greatest extent possible.
- Securing the two support legs 2 and 3 in the extended position is effected by the extended position of the coupling.
- the extended position of the coupling is defined by a gear stop 21, against which drive one or both of the coupling members when the extended position is reached.
- a spring device 22 can bias the coupling in its extended position. As FIG. 2 shows, a spring 23 may act on one of the two coupling members 14 or 16 to the transmission stop 21 out.
- the coupling member acting as a crank has a slot with which it is articulated to the other coupling member (see. FIG. 2a ).
- the coupling element acting as a crank can be overstretched be, whereby a reliable position assurance of the support legs 2 and 3 is achieved in the extended state.
- FIG. 3 also shown alternative embodiment of the telescoping drive 13 consists of a planar linkage with two coupling members 14 and 16.
- the structure of the transmission is largely consistent with that of the previously described embodiment, so that reference is made.
- the telescopic drive 13 differs by the operation of the linkage.
- the first coupling member 14 is not connected via a toothing with a bearing-fixed teeth in engagement, but attached to the first support leg 3 about the pivot axis 15 freely pivotally.
- the coupling formed by the two coupling members 14 and 16 is connected by an actuator 24 with an eccentric 25 which is rotatably connected to the hydraulic cylinder 7.
- an actuator 24 with an eccentric 25 which is rotatably connected to the hydraulic cylinder 7.
- the eccentric 25 is attached to the end of the piston rod, with which the piston-cylinder unit is hinged to the first support leg 2.
- the actuator 24 is articulated. With its other end, the actuator 24 is connected to the hinge 18, which connects the two coupling members 14 and 16.
- the arrangement is such that the longitudinal axis of the hydraulic cylinder 7 and the straight line, which is defined by the hinge point 26 and the articulation point of the hydraulic cylinder 7 on the support leg 2, are approximately perpendicular to each other. In principle, however, other arrangements are possible. It is important that the pivot point 26 changes its position relative to the support foot 1 when the support foot 1 pivots.
- the arrangement is such that the actuator 24 is in the extended, ie extended position of the two coupling members 14 and 16 to this substantially perpendicular (see. FIG. 3 ).
- the actuator 24 as a resilient pressure piece, in particular in the form of a piston-cylinder unit with inserted compression spring formed be.
- an overstretching of the existing of the eccentric 25 and the actuator 24 coupling could be achieved easily.
- the coupling formed by the two coupling members 14 and 16 can be brought into an overstretched position in which it moves against a stop, without excessively accurate tolerances would be observed.
- the actuator 24 is not connected to the joint 18, but with one of the two coupling members 14 and 16.
- it could be connected to a coupling member having a slot for forming the hinge 18 with the other coupling member, similar to the previously described embodiment.
- the coupling member 14 can be brought with slot-like recess in an overstretched position, and thus a secure locking of the support legs 2 and 3 can be achieved.
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
- Body Structure For Vehicles (AREA)
Description
Die vorliegende Erfindung betrifft eine Abstützvorrichtung für Baumaschinen wie Hydraulikbagger und dergleichen, mit einem Abstützfuß, der schwenkbar an einem maschinenseitigen Tragstück, vorzugsweise dem Fahrzeugrahmen oder dem Chassis, angelenkt ist, und einem Schwenkantrieb zum Aus- und Einschwenken des Abstützfußes, wobei der Abstützfuß aus mehreren Stützschenkeln besteht, die nach Art eines Teleskops ausfahrbar aneinander gelagert sind, wobei den Stützschenkeln eine Feststelleinrichtung zum Feststellen der Stützschenkel in zumindest einer Stellung relativ zueinander, insbesondere in der ausgefahrenen Stellung, zugeordnet ist.The present invention relates to a supporting device for construction machines such as hydraulic excavators and the like, with a support foot which is pivotally articulated on a machine-side support piece, preferably the vehicle frame or the chassis, and a pivot drive for swinging out and in of the outrigger, wherein the outrigger of several Support legs is made, which are mounted extendable to each other in the manner of a telescope, wherein the support legs a locking device for locking the support legs in at least one position relative to each other, in particular in the extended position assigned.
Abstützfüße für Baumaschinen sind bereits in diversen Ausführungen bekannt geworden. Diese sind jedoch noch immer verbesserungsfähig. Insbesondere ist bei bekannten Abstützvorrichtungen die Vergrößerung der effektiven Abstützweite durch das Ausfahren der Abstützfüße zum Teil noch nicht groß genug. Werden die Abstützfüße hingegen sehr lang und damit weit ausschwenkbar gemacht, entstehen Kollisionsprobleme z. B. mit dem Oberwagen des Hydraulikbaggers. Eine Abstützvorrichtung der genannten Art ist aus der
Hierdurch sind zwei verschiedene Ausfahrbewegungen vorgesehen: Zum einen werden die Stützschenkel austeleskopiert. Zum anderen werden sie ausgeschwenkt. Einerseits wird hierdurch im ausgefahrenen Zustand ein weites Auskragen und damit eine breite Abstützbasis geschaffen, andererseits kann die Abstützvorrichtung im eingefahrenen Zustand in eine kompakte, kleinbauende Konfiguration zusammengeschoben bzw. geschwenkt werden, so dass Kollisionsprobleme z. B. mit dem drehenden Oberwagen und dergleichen minimiert sind.As a result, two different extension movements are provided: First, the support legs are telescoped. On the other hand, they are swung out. On the one hand this creates a wide cantilever and thus a broad support base in the extended state, on the other hand, the support device can be pushed together or retracted in the retracted state into a compact, small-sized configuration, so that collision problems z. B. are minimized with the rotating superstructure and the like.
Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, eine verbesserte Abstützvorrichtung der eingangs genannten Art zu schaffen, die Nachteile des Standes der Technik vermeidet und letzteren in vorteilhafter Weise weiterbildet. Vorzugsweise soll mit einem einfachen Stelltrieb ein trotz der mehreren Freiheitsgrade präzises Ein- und Ausfahren erzielt werden, ohne Kollisionsprobleme der Abstützvorrichtung zu erzeugen.The present invention is therefore an object of the invention to provide an improved supporting device of the type mentioned above, which avoids the disadvantages of the prior art and the latter further develops in an advantageous manner. Preferably, with a simple actuating drive a precise despite the several degrees of freedom retraction and extension can be achieved without generating collision problems of the support device.
Erfindungsgemäß wird diese Aufgabe durch eine Abstützvorrichtung gemäß Schutzanspruch 1 gelöst. Bevorzugte Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.According to the invention this object is achieved by a supporting device according to
Es ist also vorgesehen, dass die Stützschenkel des Abstützfußes beim Aus- und Einschwenken des Abstützfußes automatisch teleskopiert werden. Eine mechanische Zwangssteuerung gibt die Ausfahrstellung der Stützschenkel zueinander in Abhängigkeit der Schwenkstellung des Abstützfußes vor. Der Teleskopierantrieb wird vom Schwenkantrieb betätigt bzw. ist an diesen angekoppelt, so dass automatisch die Stützschenkel ausfahren, wenn der Abstützfuß ausgeschwenkt wird und umgekehrt. Eine solche Zwangssteuerung stellt sicher, dass beim Nachobenschwenken der Abstützfüße keine Kollision mit darüber liegenden Bauteilen der Baumaschine erfolgt wie z. B. dem Oberwagen. Der Abstützfuß ist immer in seiner kurzen, zusammengeschobenen Stellung, wenn er nach oben geschwenkt ist. Als Teleskopierantrieb ist ein Gelenkgetriebe, insbesondere ein Schubkurbelgetriebe vorgesehen, das nach Art eines Zweischlags aufgebaut ist und durch Verschwenken des Abstützfußes betätigt wird. Ein erstes Getriebeelement kann vorzugsweise im Inneren an einem ersten der beiden Stützschenkel schwenkbar angelenkt sein, während ein zweites Getriebeelement, das mit dem ersten Getriebeelement gelenkig verbunden ist, an dem zweiten der beiden Stützschenkel vorzugsweise ebenfalls im Inneren schwenkbar angelenkt sein kann. Sobald die beiden Getriebeelemente zueinander verschwenkt werden, fährt der zweite Stützschenkel relativ zum ersten aus bzw. ein. Dabei ist eines der beiden Getriebeelemente als treibende Kurbel ausgebildet. Insbesondere kann es von einem Schwenkantriebselement angetrieben werden, das einerseits mit dem genannten Getriebeelement verbunden und andererseits tragstückseitig angelenkt ist und beim Verschwenken des Abstützfußes eine Schwenk- bzw. Drehbewegung relativ zu dem ersten Stützschenkel ausführt. Als Schwenkantriebselement kann ein maschinenseitig fest angeordnetes Zahnradprofil, insbesondere ein auf der Schwenkachse des Abstützfußes mit dem Haltestück drehfest sitzendes Zahnrad, vorgesehen sein. Das erste der beiden Getriebeelemente des Gelenkgetriebes ist um seine Schwenkachse herum mit einem entsprechenden Zahnradprofil versehen, so dass es auf dem maschinenseitig festen Zahnradprofil abwälzt, wenn der Abstützfuß geschwenkt wird. In alternativer Ausführung der Erfindung kann als Schwenkantriebselement ein mit der Kolbenzylindereinheit zum Verschwenken des Abstützfußes fest verbundenes Exzenterstück vorgesehen sein, das mit einem der beiden zuvor genannten Getriebeelemente gelenkig verbunden ist. Auch hierdurch kann das Gelenkgetriebe gestreckt bzw. zusammengeklappt werden, wenn der Abstützfuß geschwenkt wird.It is therefore envisaged that the support legs of the outrigger be telescoped automatically when swinging out and the support foot. A mechanical positive control indicates the extended position of the support legs to each other depending on the pivot position of the outrigger. The telescopic drive is actuated by the rotary actuator or is coupled to this, so that automatically extend the support legs when the outrigger is swung out and vice versa. Such a forced control ensures that when Nachobenschwenken the outrigger no collision with overlying components of the construction machine such. B. the superstructure. The outrigger is always in its short, collapsed position when it is swung up. As a telescopic drive a linkage, in particular a slider crank mechanism is provided, which is constructed in the manner of a two-bladed and is actuated by pivoting the support foot. A first transmission element may preferably be hinged on the inside of a first of the two support legs pivotally, while a second transmission element, which is pivotally connected to the first transmission element, preferably can be pivoted on the second of the two support legs also pivotable in the interior. As soon as the two gear elements are pivoted relative to each other, the second support leg extends or retracts relative to the first one. In this case, one of the two transmission elements is designed as a driving crank. In particular, it can be driven by a swivel drive element, which is connected on the one hand to the said transmission element and on the other hand is hinged on the support side and during pivoting of the support foot executes a pivotal or rotary movement relative to the first support leg. As a pivot drive element can be provided on the machine side firmly arranged gear profile, in particular a rotationally fixed on the pivot axis of the outrigger with the retaining piece seated gear. The first of the two gear elements of the joint gear is provided around its pivot axis with a corresponding gear profile, so that it rolls on the machine side fixed gear profile when the outrigger is pivoted. In an alternative embodiment of the invention can be provided as a pivot drive element with the piston-cylinder unit for pivoting the support leg firmly connected eccentric piece, which is pivotally connected to one of the two aforementioned transmission elements. This also allows the linkage to be stretched or folded when the outrigger is pivoted.
Als Schwenkantrieb zum Ausschwenken des Abstützfußes ist vorzugsweise eine Druckmittel-Kolbenzylindereinheit vorgesehen, die einerseits an dem Abstützfuß und andererseits maschinenseitig, vorzugsweise an dem Tragstück angelenkt ist, an dem auch der Abstützfuß schwenkbar befestigt ist. Die Anlenkung der Kolbenzylindereinheit am Abstützfuß kann an verschiedenen Stützschenkeln des Abstützfußes vorgesehen sein. Nach einer bevorzugten Ausführung der Erfindung ist die Kolbenzylindereinheit an dem ersten Stützschenkel angelenkt, der schwenkbar an dem maschinenseitigen Tragstück gelagert ist, so dass mit geringen Hubwegen der Kolbenzylindereinheit eine relativ große Schwenkbewegung des Abstützfußes realigiert sein kann. Dieser Hebeleffekt kann verstärkt werden, wenn der Anlenkpunkt der Kolbenzylindereinheit vom freien Ende des jeweiligen Stützschenkels zur Schwenkachse des Abstützfußes hin verschoben ist. Nach einer Ausführung der Erfindung kann der Anlenkpunkt näher zur Schwenkachse des Abstützfußes als zum freien Ende des ersten Stützschenkels hin angeordnet sein.As a pivot drive for pivoting the Abstützfußes a pressure medium piston-cylinder unit is preferably provided, which is articulated on the one hand on the support foot and on the other side of the machine, preferably on the support piece on which the support foot is pivotally mounted. The articulation of the piston-cylinder unit on the outrigger can be provided on different support legs of the outrigger. According to a preferred embodiment of the invention, the piston-cylinder unit is articulated to the first support leg, which is pivotally mounted on the machine-side support piece, so that with small strokes of the piston-cylinder unit, a relatively large pivotal movement of the outrigger can be realized. This leverage effect can be enhanced when the pivot point the piston-cylinder unit is displaced from the free end of the respective support leg to the pivot axis of the support foot. According to one embodiment of the invention, the articulation point may be arranged closer to the pivot axis of the outrigger than towards the free end of the first support leg.
Der Abstützfuß kann grundsätzlich aus verschieden vielen Stützschenkeln bestehen. Nach einer bevorzugten Ausführung der Erfindung sind zwei Stützschenkel vorgesehen, d. h. ein erster Stützschenkel, der schwenkbar am Tragstück angelenkt ist, sowie ein zweiter Stützschenkel, der teleskopierbar an dem zweiten Stützschenkel gelagert ist.The support foot can basically consist of different numbers of support legs. According to a preferred embodiment of the invention, two support legs are provided, d. H. a first support leg which is pivotally hinged to the support piece, and a second support leg which is telescopically mounted on the second support leg.
Um einen besonders einfachen Aufbau des Abstützfußes zu erreichen, kann die Feststelleinrichtung formschlüssig wirkend und manuell betätigbar ausgebildet sein. Vorzugsweise können in den Stützschenkeln Bohrungen vorgesehen sein, die bei entsprechender Lage der Stützschenkel zueinander miteinander fluchten, so dass ein Verriegelungsbolzen in die fluchtenden Bohrungen einsteckbar ist und damit die Stützschenkel zueinander in der jeweiligen austeleskopierten Lage verriegelt werden. Um unterschiedliche Ausfahrstellungen zu erlauben, können mehrer Bohrungspaare vorgesehen sein, die miteinander in verschiedenen Ausfahrstellungen fluchten.In order to achieve a particularly simple construction of the support foot, the locking device can be formed positively acting and manually operable. Preferably, holes can be provided in the support legs, which are aligned with each other with a corresponding position of the support legs, so that a locking pin can be inserted into the aligned holes and thus the support legs are locked to each other in the respective austeleskopierten position. To allow different extension positions, a plurality of pairs of holes may be provided, which are aligned with each other in different extension positions.
In Weiterbildung der Erfindung kann der Teleskopierantrieb zum Ein- und Ausfahren der Stützschenkel im Inneren der Stützschenkel angeordnet sein.In a further development of the invention, the telescopic drive for extending and retracting the support legs can be arranged in the interior of the support legs.
Vorzugsweise bildet der Teleskopierantrieb gleichzeitig die Feststelleinrichtung, die die Stützschenkel in der jeweiligen Stellung fixiert. Im Falle des Spindelantriebs kann eine selbsthemmende Gewindespindel vorgesehen sein. Vorteilhafterweise wirkt die Feststelleinrichtung auf den Teleskopierantrieb und damit nur mittelbar auf die Stützschenkel ein, so dass mit kleinen Feststellkräften nur der Teleskopierantrieb gehalten werden braucht und damit dennoch eine sichere Feststellung der Stützschenkel erreicht werden kann.Preferably, the telescopic drive simultaneously forms the locking device which fixes the support legs in the respective position. In the case of the spindle drive, a self-locking threaded spindle can be provided. Advantageously, the locking device acts on the telescopic drive and thus only indirectly on the support legs, so that with small locking forces only the telescopic drive needs to be maintained and thus still a safe determination of the support legs can be achieved.
Um eine stabile Verriegelung der Stützschenkel im ausgefahrenen Zustand zu erreichen, ist das Gelenkgetriebe vorzugsweise derart ausgebildet, dass es in der ausgefahrenen Stellung der Stützschenkel eine gestreckte Position einnimmt, d. h. die beiden gelenkig miteinander verbundenen Getriebeelemente definieren im wesentlichen eine Gerade. Gegebenenfalls können sie auch eine leicht überstreckte Stellung einnehmen. Vorzugsweise ist ein Getriebeanschlag vorgesehen, der die Strecklage bzw. die leicht überstreckte Lage der Getriebeelemente definiert. Gegen diesen Getriebeanschlag fahren eines oder beide der Getriebeelemente, wenn sie die gestreckte Lage erreichen. Um ein ungewolltes Einfahren zu verhindern, kann eine Federvorrichtung vorgesehen sein, die das Gelenkgetriebe in seine gestreckte Stellung hin vorspannt. Es kann auch vorgesehen sein, dass das als Kurbel wirkende Getriebeelement zur Bildung der Gelenkverbindung mit dem anderen Getriebeelement ein Langloch besitzt, so dass es in eine überstreckte Stellung bringbar ist.In order to achieve a stable locking of the support legs in the extended state, the linkage is preferably designed such that it assumes a stretched position in the extended position of the support legs, d. H. the two pivotally interconnected gear elements essentially define a straight line. If necessary, they can also assume a slightly overstretched position. Preferably, a gear stop is provided which defines the stretched position or the slightly overstretched position of the gear elements. Against this gear stop drive one or both of the transmission elements when they reach the stretched position. To prevent accidental retraction, a spring device may be provided which biases the linkage in its extended position. It can also be provided that the gear element acting as a crank has an oblong hole for forming the articulated connection with the other gear element, so that it can be brought into an overstretched position.
Die Erfindung wird nachfolgend anhand bevorzugter Ausführungsbeispiele und zugehöriger Zeichnungen näher erläutert. In den Zeichnungen zeigen:
- Fig. 1:
- eine schematische Seitenansicht einer Abstützvorrichtung, die keine Ausführung der Erfindung bildet, bei der der Abstützfuß manuell teleskopierbar und verriegelbar ist,
- Fig. 2:
- eine schematische Seitenansicht einer Abstützvorrichtung nach einer bevorzugten Ausführung der Erfindung im Teilschnitt, bei der ein Gelenk- bzw. Koppelgetriebe zur automatischen, zwangsgesteuerten Teleskopierung des Abstützfußes vorgesehen ist, wobei der Abstützfuß in zwei Schwenkstellungen gezeigt ist, und
- Fig. 3:
- eine schematische Seitenansicht einer Abstützvorrichtung nach einer weiteren bevorzugten Ausführung der Erfindung, bei der ähnlich der Ausführung nach
Fig. 2 ein Koppel- bzw. Gelenkgetriebe zum Teleskopieren des Abstützfußes vorgesehen ist.
- Fig. 1:
- a schematic side view of a supporting device, which does not form an embodiment of the invention, in which the outrigger is manually telescoped and lockable,
- Fig. 2:
- a schematic side view of a supporting device according to a preferred embodiment of the invention in partial section, in which a joint or coupling gear for automatic, positively controlled telescoping of the outrigger is provided, wherein the outrigger is shown in two pivot positions, and
- 3:
- a schematic side view of a supporting device according to another preferred embodiment of the invention, in the similar to the embodiment according to
Fig. 2 a coupling or articulated gear is provided for telescoping the outrigger.
Der in
Zum Verschwenken des Abstützfußes 1 ist als Schwenkantrieb 6 ein Hydraulikzylinder 7 vorgesehen, der mit seiner Kolbenstange an dem ersten Stützschenkel 2 angelenkt und mit seinem Zylinder an dem Tragstück 4 angelenkt ist. Die Anlenkung- bzw. Schwenkachsen des Hydraulikzylinders 7 sind parallel zu der Schwenkachse 5 des Abstützfußes 1. Die Anordnung des Hydraulikzylinder 7 ist gemäß Figur 1 derart getroffen, dass die Ausrichtung seiner Längsachse in der ausgeschwenkten Stellung des Abstützfußes 1 etwa parallel zur Längsachse des Abstützfußes ist, in der hochgeschwenkten Stellung des Abstützfußes 1 steht der Hydraulikzylinder 7 mit seiner Längsachse - grob gesprochen - etwa senkrecht auf dem Abstützfuß 1.For pivoting the
Um einen besonders einfachen Aufbau zu erreichen, sind die Stützschenkel 2 und 3 manuell ein- und austeleskopierbar. Als Feststelleinrichtung ist eine lösbare Verbindung, z. B. Steckbolzenverbindung vorgesehen. In dem ersten Stützschenkel 2 ist eine erste Bohrung bzw. ein erstes Fluchten des Bohrungspaares vorgesehen. In dem zweiten Stützschenkel 3 sind mehrere, in Längsrichtung des Stützschenkels beabstandete zweite Bohrungen 9 vorgesehen, die in entsprechender Stellung des zweiten Stützschenkels 3 mit den ersten Bohrungen 8 fluchten. Ein Steckbolzen 10 kann durch die fluchtenden Bohrungspaare geschoben werden, um die Stützschenkel 2 und 3 miteinander zu verriegeln.To achieve a particularly simple structure, the
Am frei auskragenden Ende des zweiten Stützschenkels 3 ist eine Aufstandsplatte 11 um eine Schwenkachse 12 schwenkbar angelenkt. Die genannte Schwenkachse 12 ist parallel zur Schwenkachse 5 des Abstützfußes 1. In Folge der Schwerkraft hängt die Aufstandsplatte 11 im wesentlichen stets in horizontaler Ausrichtung, wenn der Abstützfuß ausgeschwenkt wird.At the freely projecting end of the second support leg 3, a
Zur Betätigung der beiden Stützschenkel 2 und 3 könnte in diesen eine Gewindespindel integriert sein, mit Hilfe derer die Stützschenkel teleskopiert werden könnten. Die Gewindespindel könnte alternativ oder zusätzlich zu der Steckbolzenverbindung vorgesehen sein.To actuate the two
Der in
Der Teleskopierantrieb 13 gemäß
Die Anordnung der beiden Koppelglieder 14 und 16 ist dabei derart getroffen, dass in der nach unten geschwenkten Stellung des Abstützfußes 1 die beiden Koppelglieder 14 und 16 eine gestreckte Stellung einnehmen und im wesentlichen eine Gerade definieren. In der nach oben geschwenkten Stellung des Abstützfußes 1 sind die beiden Koppelglieder 14 und 16 zusammengeschwenkt. Das Übersetzungsverhältnis der beiden Verzahnungen 19 und 20 ist dabei derart getroffen, dass in der nach oben geschwenkten Stellung des Abstützfußes 1 die beiden Koppelglieder 14 und 16 vorzugsweise einen spitzen Winkel zueinander einnehmen. Hierdurch kann ein weiter Ausfahrweg der Stützschenkel 2 und 3 mit kurzen Koppelgliedern erreicht werden. Der erreichbare Schubweg des Gelenkgetriebes wird größtmöglich ausgenutzt.The arrangement of the two
Die Sicherung der beiden Stützschenkel 2 und 3 in der ausgefahrenen Stellung wird durch die Strecklage der Koppel bewirkt. Die Strecklage der Koppel wird dabei durch einen Getriebeanschlag 21 definiert, gegen den eine oder beide der Koppelglieder fahren, wenn die ausgefahrene Stellung erreicht wird.Securing the two
Eine Federvorrichtung 22 kann die Koppel in ihre gestreckte Lage vorspannen. Wie
Weiterhin kann vorgesehen sein, dass das als Kurbel wirkende Koppelglied ein Langloch besitzt, mit dem es mit dem anderen Koppelglied gelenkig verbunden ist (vgl.
Die in
Gemäß
Alternativ könnte vorgesehen sein, dass das Betätigungsglied 24 nicht mit dem Gelenk 18, sondern mit einem der beiden Koppelglieder 14 und 16 verbunden ist. Insbesondere könnte es mit einem Koppelglied verbunden sein, das ein Langloch zur Bildung des Gelenks 18 mit dem anderen Koppelglied besitzt, ähnlich der zuvor beschriebenen Ausführung. Wenn das andere Koppelglied 16 gegen den Getriebeanschlag 21 fährt, kann das Koppelglied 14 mit langlochartiger Ausnehmung in eine überstreckte Stellung gebracht werden und damit eine sichere Verriegelung der Stützschenkel 2 und 3 erreicht werden.Alternatively, it could be provided that the
Claims (10)
- Supporting device for building machines, such as hydraulic excavators and the like, with a supporting foot (1) which is articulated pivotably on a machine-side carrying piece (4), preferably a vehicle frame or chassis, and with a pivoting drive (6) for the outward and inward pivoting of the supporting foot (1), the supporting foot (1) consisting of a plurality of supporting legs (2, 3) which are fastened to one another extendably in the manner of a telescope, and a locking means (28) for locking the supporting legs (2, 3) in at least one position in relation to one another being provided, characterized in that a mechanical positive control is provided, which controls the extended position of the supporting legs (2, 3) in relation to one another as a function of the pivoting position of the supporting foot (1), there being provided as a telescopic drive (13) for retracting and extending the supporting legs (2, 3) an articulated gear which has a first gear element (14) which is articulated pivotably on a first of the supporting legs (2), a second gear element (16) which is articulated pivotably on a second of the supporting legs (3) and is connected in an articulated manner to the first gear element (14), and a pivoting drive element (19, 20; 24) which is connected to one of the gear elements (14, 16) and drives the latter correspondingly to a pivoting of the supporting foot (1).
- Supporting device according to the preceding claim, the locking device (28) being designed to act positively, preferably possesses recesses (8, 9) in the supporting legs (2, 3), which recesses are in alignment with one another in a corresponding position of the supporting legs, and a bolt element (10) capable of being pushed into the recesses.
- Supporting device according to one of the preceding claims, the pivoting drive (6) provided being a pressure-medium piston/cylinder unit (7) which is articulated, on the one hand, on one of the supporting legs (2) and, on the other hand, on the machine side, preferably on the carrying piece (4).
- Supporting device according to one of the preceding claims, the telescopic drive (13) being arranged inside the supporting legs (2, 3).
- Supporting device according to the preceding claim, the telescopic drive (13) at the same time forming the locking means (28).
- Supporting device according to one of the preceding claims, the articulated gear being designed in such a way that, in the extended position of the supporting legs (2, 3), it forms a stretched-out coupler, a gear stop (21) which defines the stretched-out position or a slight overstretched-out position being preferably provided.
- Supporting device according to one of the preceding claims, the articulated gear possessing as a pivoting drive element a gearwheel profile (20) arranged fixedly on the machine side.
- Supporting device according to one of Claims 1 to 6, the articulated gear having as a pivoting drive element an eccentric piece (25) connected fixedly in terms of rotation to the pivoting drive (6) of the supporting foot (1).
- Supporting device according to one of the preceding claims, the supporting foot (1) being pivotable about a horizontal axis when the building machine stands on level ground.
- Supporting device according to one of the preceding claims, a standing plate (11) with an enlarged standing surface being articulated pivotably and/or rotatably on the freely projecting end of the supporting foot (1).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE20120964U DE20120964U1 (en) | 2001-12-27 | 2001-12-27 | Support device for construction machines such as hydraulic excavators and the like. |
DE20120964U | 2001-12-27 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1323871A2 EP1323871A2 (en) | 2003-07-02 |
EP1323871A3 EP1323871A3 (en) | 2003-07-09 |
EP1323871B1 true EP1323871B1 (en) | 2008-10-01 |
Family
ID=7965673
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20020028802 Expired - Fee Related EP1323871B1 (en) | 2001-12-27 | 2002-12-23 | Outrigger device for working machines such as hydraulic excavators or the like |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1323871B1 (en) |
DE (2) | DE20120964U1 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005007522A1 (en) | 2005-02-17 | 2006-08-31 | Putzmeister Ag | Support arm for mobile working machines |
IT1398962B1 (en) * | 2010-02-18 | 2013-03-28 | C M C S R L Societa Unipersonale | STABILIZER DEVICE FOR MACHINE OPERATOR |
IT1403343B1 (en) * | 2011-01-17 | 2013-10-17 | C M C S R L Societa Unipersonale | STABILIZER DEVICE FOR OPERATING MACHINES |
RU2469798C2 (en) * | 2011-03-03 | 2012-12-20 | Геннадий Леонидович Багич | Shower unit using activated water |
DE102011102062A1 (en) * | 2011-05-19 | 2012-11-22 | Olaf Telesch | Boom for universal farm loader that is utilized in e.g. gardens to drive cargo, has tool carrier arranged at vertically pivotable lifting arm, and swingable intermediate arm steered between horizontally pivotable swing gear and lift arm |
DE102012215534A1 (en) | 2012-08-31 | 2014-03-06 | Putzmeister Engineering Gmbh | locking device |
EP3752682B1 (en) | 2018-02-13 | 2022-09-07 | Volvo Construction Equipment AB | A surface support assembly for supporting a working machine |
CN115259037A (en) * | 2022-07-29 | 2022-11-01 | 国网江苏省电力有限公司泰州供电分公司 | Self-walking track mast vertical lifting platform |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1236176A (en) * | 1969-06-12 | 1971-06-23 | Josef Kaiser | Improvements in or relating to a mobile appliance |
US3801068A (en) * | 1972-12-22 | 1974-04-02 | Kogen Ind Inc | Automatic folding landing gear |
US3981514A (en) * | 1973-10-15 | 1976-09-21 | Clark Equipment Company | Outrigger |
JPS5447227A (en) * | 1977-09-19 | 1979-04-13 | Tadano Tekkosho:Kk | Outrigger |
FR2600599A1 (en) * | 1986-06-24 | 1987-12-31 | Guilhem Claire | Device for stabilising a machine |
IT216971Z2 (en) * | 1989-03-10 | 1991-10-21 | Nardi Daniele | STABILIZATION AND LIFTING JACK |
IT1289088B1 (en) * | 1996-03-13 | 1998-09-25 | Fki Fai Komatsu Ind Spa | STABILIZING FOOT WITH VARIABLE GEOMETRY, PARTICULARLY FOR EARTH-MOVING VEHICLES. |
-
2001
- 2001-12-27 DE DE20120964U patent/DE20120964U1/en not_active Expired - Lifetime
-
2002
- 2002-12-23 DE DE50212834T patent/DE50212834D1/en not_active Expired - Lifetime
- 2002-12-23 EP EP20020028802 patent/EP1323871B1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE50212834D1 (en) | 2008-11-13 |
DE20120964U1 (en) | 2003-06-12 |
EP1323871A3 (en) | 2003-07-09 |
EP1323871A2 (en) | 2003-07-02 |
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