EP3730448A1 - Mobile crane with extendable guy mast - Google Patents
Mobile crane with extendable guy mast Download PDFInfo
- Publication number
- EP3730448A1 EP3730448A1 EP20170300.6A EP20170300A EP3730448A1 EP 3730448 A1 EP3730448 A1 EP 3730448A1 EP 20170300 A EP20170300 A EP 20170300A EP 3730448 A1 EP3730448 A1 EP 3730448A1
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- EP
- European Patent Office
- Prior art keywords
- extension
- base
- guy
- main boom
- head
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 238000000034 method Methods 0.000 claims description 5
- 238000010276 construction Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 239000000969 carrier Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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Classifications
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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
- B66C23/82—Luffing gear
- B66C23/821—Bracing equipment for booms
- B66C23/823—Bracing equipment acting in vertical direction
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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
- B66C23/82—Luffing gear
- B66C23/821—Bracing equipment for booms
- B66C23/826—Bracing equipment acting at an inclined angle to vertical and horizontal directions
Definitions
- the invention relates to a mobile crane with an undercarriage, an uppercarriage arranged on the undercarriage and a main boom arranged on the uppercarriage such that it can be luffed, as well as at least one guy mast arranged on the main boom, the guy mast comprising at least one base beam which can be extended with at least one extension beam on which A cable deflection pulley is arranged on the base support in the area of the base support head, and a further cable deflection pulley is arranged on the extension support in the area of the extension support head.
- the main boom can be tensioned via a tensioning device to increase the load capacity, which is also referred to as "superlift” or “lateral superlift”.
- the bracing device consists essentially of a pair of bracing masts which are arranged in the area of a base box of the main boom. In an operating position, the two guy masts extend backwards in a V-shape. To increase the load capacity, a cable guy is led from an upper end of the main boom to a foot of the main boom over the ends of the guy masts.
- the bracing device can be coupled to the main boom in the sense of an add-on part if necessary in order to adapt the usability of the mobile crane to the respective application. Additional counterweights are also often used with this tensioning device. A reduction in the lateral deformation of the main boom with the same load capacity or an increase in the load capacity with the same deformation of the main boom is achieved via the guying device.
- the disclosure document DE 10 2012 025 131 A1 relates to a comparable guying device for a telescopic main boom, for example a vehicle crane.
- the bracing device comprises two bracing supports, which in turn each consist of an inner segment, an outer segment, an adjusting cylinder, a tilting cylinder, a cable winch, a guy rope or guy line and a pulley.
- the inner segments are mounted on a base box of the main boom so that they can pivot about a horizontal axis and can be pivoted backwards via the adjustment cylinders.
- Each of the inner segments is followed by an outer segment which can each be pivoted about an axis running parallel to the longitudinal axis of the main boom via the tilting cylinder.
- the guy supports are each angled and form a Y or T when viewed from above.
- the utility model DE 20 2005 009 317 U1 describes a further mobile crane with a swiveling superstructure, a telescopic main boom articulated on the superstructure and a guy device with two V-shaped spreadable guy supports, which are mounted on the superstructure like a derrick boom and can be pivoted by means of a guy cylinder.
- the guy supports are each designed to be hydraulically telescopic in order to be able to vary the increase in load that can be achieved via the guy supports.
- the guy supports each consist of a base body and an extension body, at the head end of which a rope pulley for a guy rope is arranged.
- the extension body is arranged on the base body so that it can pivot hydraulically.
- the invention is therefore based on the object of providing a vehicle crane and a method for lengthening a guy mast of a vehicle crane which enables a flexible increase in the load capacity.
- the guy mast comprises at least one base beam which can be extended with at least one extension beam, on the base beam in the area of the base beam head a cable deflection pulley and on the extension beam in the area of the extension beam head a further cable deflection roller is arranged, achieved that for the extension the extension support can be attached to the base support in an extension position.
- the guy mast can have flexible component lengths in an advantageous and simple manner.
- the guy masts according to the invention can achieve compact dimensions; When using the mobile crane with a large amount of space, higher load capacities can be achieved with the maximum component length of the guy mast. By extending the guy mast if necessary, a larger lever arm is possible between the guy line and the main boom, so that the forces in the guy line and the main boom are reduced or higher loads can be achieved with the same component strengths.
- the guy mast according to the invention is here, as is known from a lattice mast boom, divided into a base beam and one or more extension beams, which are then combined with one another in an extension position if necessary according to the desired length of the guy mast.
- the base support and the extension support (s) In the extension position, the base support and the extension support (s) cannot be moved or adjusted relative to one another, but are simply bolted to one another and thus immovably and rigidly connected to one another. Rigid could then also be described as monolithic.
- the guy mast according to the invention divided into a base beam and one or more extension beams, has a rope pulley at the head-side ends of the base beams or extension beams, so that advantageously a base beam is also ready for use without bolting at least one extension beam for bracing.
- Telescopic cranes are characterized in that the crane boom consists of several telescopic sections that can be telescoped into one another, whereas in a lattice boom crane the boom consists of several rigidly interconnected lattice mast elements.
- a mobile crane is understood as a mobile crane with a telescopic boom, a crawler crane with a telescopic boom or as a crawler crane with a lattice boom.
- connection tab is advantageously arranged on the base carrier of the guy mast in the area of a base carrier head and at least one fastening tab is advantageously arranged on the extension carrier in the area of an extension carrier foot.
- the extension carrier can preferably be detachably attached via the fastening tab to the connection tab of the base carrier.
- An extension of the guy mast is thus simplified.
- the connection lugs can be designed as an overhead structure.
- the head superstructure advantageously enables a lateral overbuilding of a cable deflection pulley which is also arranged on the base support head and which can thus remain on the base support even when the base support is extended. Extending the guy mast is thus further simplified.
- the fastening lug of the extension support can be detachably connected to the connection lug of the base support via upper bolts and lower bolts in a particularly simple manner.
- a further cable deflection roller is advantageously arranged in the area of the extension carrier head of the extension carrier.
- the mobile crane preferably has two extendable ones Guy masts on the main boom, whereby the two extendable guy masts are arranged in a V-shape or in parallel. A stability of the main boom of the mobile crane is thus increased.
- more than one extension beam can advantageously be provided, which are then bolted to one another and one behind the other in order to further extend the guy mast or the base carrier. This means that the increase in load capacity can be staggered more finely towards the rear with the corresponding swivel radius.
- the main boom is particularly preferably a telescopic boom and the at least one guy mast is arranged on the base box of the telescopic boom or a telescopic section of the telescopic boom.
- the at least one extension beam is a truss, a box girder or a combination thereof.
- the guy mast is particularly preferably arranged on the main boom between the foot and head of the main boom.
- the guy mast is therefore not arranged directly on the head or foot of the main boom, but in a central area of the main boom, preferably at least 25% of the length of the main boom from the head or foot.
- the invention is directed to a method for extending a guy mast of a main boom of a vehicle crane, in particular a vehicle crane according to the invention, the guy mast comprising a base beam with a cable deflection roller in the area of the base beam head and an extension beam with a further cable deflection roller in the area of the extension beam head.
- the method according to the invention proposes a particularly simple and secure attachment of an extension support to the base support head of the base support.
- the extension carrier is brought up to the basic carrier from a transport position in which the extension carrier is separate from the basic carrier and then the basic carrier is brought into one by bolting the extension carrier Extension position extended.
- the rope deflection roller remains on the base support head.
- one or more extension supports can be arranged one behind the other on an already mounted extension support while retaining the respective cable deflection pulley.
- the Figure 1 shows a schematic side view of a road mobile crane 1 with an undercarriage 2, an uppercarriage 4 rotatably arranged on the undercarriage 2 via a rotary joint 3 about a vertical axis of rotation and with a main boom 5 that is luffed and erected on the uppercarriage 4.
- the main boom 5 is as Telescopic boom designed and shown schematically in the form of the base box 5a and has telescopic sections that are not shown for reasons of simplicity.
- the main boom 5 is or can be provided with a bracing device 6 to increase the load capacity.
- the guying device 6 essentially consists of a guy mast 7 and a guy line 10.
- the guy mast 7 is mounted on a rear side of a base box 5a of the main boom 5 facing away from the superstructure 4 and extends preferably at right angles to the rear away from the main boom 5.
- the guy mast 7 consists of a box-shaped base girder 8, at the free end of which in the form of a base girder head 8a a cable pulley 8b is arranged.
- the rope deflection roller 8b is around a transverse to the longitudinal direction of the base carrier 8 aligned axis rotatable.
- the guy line 10 which is attached to a head 5c of the main boom 5 on the one hand and to a foot 5b of the main boom 5 or to the superstructure 4 on the other, is guided over the cable deflection pulley 8b.
- a winch (not shown in Figure 1 ) arranged for tensioning the guy line 10, at least the end of which is designed as a guy rope for this purpose.
- the guy line 10 consisting of ropes and / or rods is shown in its main line of action.
- the guy line 10 can also be attached to the extension arm instead of the head 5c of the main arm 5.
- the extension arm can also be an adapter for a luffing jib.
- guy mast 7 it is described above how to attach the guy mast 7 to the base box 5 a of the main boom 5. In principle, it is also possible to attach the guy mast 7 to one of the telescopic sections of the main boom 5.
- a plurality of guy masts 7 can also be spaced apart from one another and provided along the main boom 5.
- the guy mast 7 is not arranged directly on the head 5c or on the foot 5b of the main boom 5, but in a central area of the main boom 5, preferably at least 25% of the length of the main boom 5 from head 5c or respectively Foot 5b removed. Accordingly, the guy mast 7 can definitely be arranged at the head of the base box 5a or one of the heads of the telescopic sections with the exception of the innermost or uppermost.
- an extension beam 9 can be attached to the guy mast 7.
- the Figure 2 shows the mobile crane 1 from Figure 1 with an inventive extension of the guy mast 7, in particular its base beam 8, via a likewise box-shaped extension beam 9.
- the extension beam 9 is attached to the base beam head 8a of the base beam 8 via upper bolts 11a and lower bolts 11b.
- connection lugs 8c are arranged on the base support head 8a of the base support 8, preferably in the form of a head superstructure, and four appropriately designed fastening straps 9c in the area of one Extension support foot 9d.
- the guy line 10 is now instead of over the cable deflection pulley 8b of the base carrier 8 via a further cable deflection pulley 9b on the extension beam head 9a.
- the rope pulley 8b on the base support 8 remains unused there.
- FIG Figure 3 A detailed view of the guy device 6 with guy mast 7 and guy line 10 is shown in FIG Figure 3 shown.
- the main boom 5 is shown schematically telescoped in and therefore the head 5c of the main boom 5, which is usually located on the innermost telescopic box, is only indicated.
- the guiding of the guy line 10, which would be present without the extension carrier 9 being attached, is shown schematically with a dashed line.
- the guiding of the guy line 10, which is present when the extension beam 9 is attached is also shown schematically with a solid line.
- the connection lugs 8c are provided, which are arranged on the base support head 8a. In principle, a large number of possible designs of the connection lugs 8c are conceivable.
- connection lug 8c is particularly preferred for the connection lug 8c to be designed as part of a lattice structure in the manner of an overhead structure.
- the shape of the head superstructure has the great advantage that it allows the cable deflection roller 8b to be built over or converted without having to dismantle the cable deflection roller 8b when an extension beam 9 is attached.
- the extension carrier 9 can now be fastened to the connection lugs 8c in a known manner via upper bolts 11a and lower bolts 11b, in particular releasably.
- the aforementioned bolting ensures that the base carrier 8 and the extension carrier 9 are rigidly connected to one another like a one-piece guy mast 7.
- the basic carrier 8 and the extension carrier 9 have each been described as box girders.
- a construction as a lattice mast or a mixed form of box and lattice mast construction is also conceivable.
- More than one extension beam 9 can also be provided, which are then bolted to one another in order to further extend the guy mast 7.
- the further extension carriers 9 then have the above-described construction of the extension carrier 9, connection lugs being arranged in the area of the extension carrier head 9a. All basic supports 8 and extension supports 9 each have a cable deflection pulley 8b, 9b.
- base supports 8 and the extension support (s) 9 can be adapted to the static requirements with regard to their cross-section, i.e. starting from the main boom 5 taper outwards.
- two guy lines 10 can also be guided over one of the rope pulleys 8b, 9b in order to further increase the load capacity.
- two guy masts 7 with corresponding guy lines 10 can also be provided.
- the two guy masts 7 are then fastened at the same height to the basic box 5a or to one of the telescopic sections and extend from the basic box 5a or the respective telescopic section in a V-shape or parallel to the rear.
- FIG. 4 is a detailed view of the extension beam 9 of the guy mast 7 from FIG Figure 3 shown.
- the base support 8 is designed as a box support 8 and the extension support 9 as a lattice mast support. Is particularly good in the Figure 4 the design and arrangement of the connecting lugs 8c, the fastening lugs 9c and the upper and lower bolts 11a, 11b can be seen.
- guying device 6 also is in the Figure 4 an alternative design of the guying device 6 is indicated.
- the guy rope 10, designed as a rope is not led to the foot 5b of the main boom 5 or to the superstructure 4, but via the rope pulley 9b parallel to the extension beam 9 and the base beam 8.
- the extension beam head 9a must then be braced with respect to the foot 5b of the main boom 5 or the superstructure 4 via a further bracing line 10 ′.
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Abstract
Die Erfindung betrifft einen Fahrzeugkran (1) mit einem Unterwagen (2), einem auf dem Unterwagen (2) angeordneten Oberwagen (4) und einem an dem Oberwagen (4) wippbar angeordneten Hauptausleger (5) sowie mindestens einem an dem Hauptausleger (5) angeordneten Abspannmast (7), wobei der Abspannmast (7) mindestens einen Grundträger (8) umfasst, der mit mindestens einem Verlängerungsträger (9) verlängerbar ist, an dem Grundträger (8) im Bereich des Grundträgerkopfes (8a) eine Seilumlenkrolle (8b) und an dem Verlängerungsträger (9) im Bereich des Verlängerungsträgerkopfes (9a) eine weitere Seilumlenkrolle (9b) angeordnet ist.Um einen Fahrzeugkran (1) bereit zu stellen, der eine flexible Traglasterhöhung ermöglicht, wird vorgeschlagen, dass für die Verlängerung der Verlängerungsträger (9) in einer Verlängerungsstellung an den Grundträger (8) anbaubar ist.The invention relates to a mobile crane (1) with an undercarriage (2), an uppercarriage (4) arranged on the undercarriage (2) and a main boom (5) arranged on the uppercarriage (4) in a luffing manner, as well as at least one on the main boom (5) arranged guy mast (7), wherein the guy mast (7) comprises at least one base beam (8) which can be extended with at least one extension beam (9), on the base beam (8) in the area of the base beam head (8a) a rope pulley (8b) and a further cable pulley (9b) is arranged on the extension beam (9) in the area of the extension beam head (9a). In order to provide a vehicle crane (1) which enables a flexible increase in the load capacity, it is proposed that for the extension of the extension beam (9) can be attached to the base support (8) in an extended position.
Description
Die Erfindung betrifft einen Fahrzeugkran mit einem Unterwagen, einem auf dem Unterwagen angeordneten Oberwagen und einem an dem Oberwagen wippbar angeordneten Hauptausleger sowie mindestens einem an dem Hauptausleger angeordneten Abspannmast, wobei der Abspannmast mindestens einen Grundträger umfasst, der mit mindestens einem Verlängerungsträger verlängerbar ist, an dem Grundträger im Bereich des Grundträgerkopfes eine Seilumlenkrolle und an dem Verlängerungsträger im Bereich des Verlängerungsträgerkopfes eine weitere Seilumlenkrolle angeordnet ist.The invention relates to a mobile crane with an undercarriage, an uppercarriage arranged on the undercarriage and a main boom arranged on the uppercarriage such that it can be luffed, as well as at least one guy mast arranged on the main boom, the guy mast comprising at least one base beam which can be extended with at least one extension beam on which A cable deflection pulley is arranged on the base support in the area of the base support head, and a further cable deflection pulley is arranged on the extension support in the area of the extension support head.
Aus der Patentschrift
Auch die Offenlegungsschrift
An die inneren Segmente schließt sich jeweils ein äußeres Segment an, die jeweils über die Neigezylinder um eine parallel zur Längsachse des Hauptauslegers verlaufende Achse verschwenkbar sind. In ihrer Betriebsstellung sind die Abspannstützen jeweils gewinkelt ausgebildet und bilden in der Draufsicht gesehen ein Y oder T.Each of the inner segments is followed by an outer segment which can each be pivoted about an axis running parallel to the longitudinal axis of the main boom via the tilting cylinder. In their operating position, the guy supports are each angled and form a Y or T when viewed from above.
Das Gebrauchsmuster
Ferner ist auch aus der Offenlegungsschrift
Der Erfindung liegt daher die Aufgabe zugrunde, einen Fahrzeugkran und Verfahren zum Verlängern eines Abspannmastes eines Fahrzeugkrans bereit zu stellen, der eine flexible Traglasterhöhung ermöglicht.The invention is therefore based on the object of providing a vehicle crane and a method for lengthening a guy mast of a vehicle crane which enables a flexible increase in the load capacity.
Diese Aufgabe wird durch einen Fahrzeugkran mit den Merkmalen des Anspruchs 1 gelöst. In den abhängigen Ansprüchen 2 bis 8 sind vorteilhafte Ausgestaltungen der Erfindung angegeben. Weiterhin wird diese Aufgabe durch ein Verfahren zum Verlängern eines Abspannmastes mit den Merkmalen von Anspruch 9 gelöst.This object is achieved by a mobile crane with the features of
Es wird eine flexible Traglasterhöhung für einen Fahrzeugkran mit einem Unterwagen, einem auf dem Unterwagen angeordneten Oberwagen und einem an dem Oberwagen wippbar angeordneten Hauptausleger sowie mindestens einem an dem Hauptausleger angeordneten Abspannmast, wobei der Abspannmast mindestens einen Grundträger umfasst, der mit mindestens einem Verlängerungsträger verlängerbar ist, an dem Grundträger im Bereich des Grundträgerkopfes eine Seilumlenkrolle und an dem Verlängerungsträger im Bereich des Verlängerungsträgerkopfes eine weitere Seilumlenkrolle angeordnet ist, dadurch erreicht, dass für die Verlängerung der Verlängerungsträger in einer Verlängerungsstellung an den Grundträger anbaubar ist. Hierdurch kann in vorteilhafter und einfacher Weise der Abspannmast flexible Bauteillängen aufweisen. Bei Einsätzen des Fahrzeugkrans auf engem Raum können mit den erfindungsgemäßem Abspannmasten kompakte Ausmaße erreicht werden; bei Einsätzen des Fahrzeugkrans mit großem Raumangebot höhere Traglasten bei maximaler Bauteillänge des Abspannmastes erreicht werden. Durch die bedarfsweise Verlängerung des Abspannmastes ist ein größerer Hebelarm zwischen Abspannstrang und Hauptausleger möglich, so dass die Kräfte im Abspannstrang und Hauptausleger reduziert werden oder bei gleichen Bauteilfestigkeiten höhere Traglasten realisiert werden können. Der erfindungsgemäße Abspannmast ist hierbei wie von einem Gittermastausleger bekannt in einen Grundträger und einen oder mehrere Verlängerungsträger gestückelt, die dann bei Bedarf entsprechend zu der gewünschten Länge des Abspannmastes in einer Verlängerungsstellung miteinander kombiniert werden. In der Verlängerungsstellung sind der Grundträger und der oder die Verlängerungsträger nicht relativ zueinander bewegbar oder einstellbar, sondern einfach miteinander verbolzt und somit unbeweglich und starr miteinander verbunden. Starr könnte dann im Ergebnis auch als monolithisch umschrieben werden. Darüber hinaus weist der erfindungsgemäße in einen Grundträger und einen oder mehrere Verlängerungsträger gestückelte Abspannmast jeweils an den kopfseitigen Enden der Grundträger beziehungsweise Verlängerungsträger eine Seilumlenkrolle auf, so dass vorteilhafter Weise auch ein Grundträger ohne Anbolzen mindestens eines Verlängerungsträgers für die Abspannung einsatzbereit ist.There is a flexible lifting capacity for a vehicle crane with an undercarriage, an uppercarriage arranged on the undercarriage and a main boom arranged luffing on the uppercarriage and at least one on the Main boom arranged guy mast, wherein the guy mast comprises at least one base beam which can be extended with at least one extension beam, on the base beam in the area of the base beam head a cable deflection pulley and on the extension beam in the area of the extension beam head a further cable deflection roller is arranged, achieved that for the extension the extension support can be attached to the base support in an extension position. As a result, the guy mast can have flexible component lengths in an advantageous and simple manner. When the mobile crane is used in confined spaces, the guy masts according to the invention can achieve compact dimensions; When using the mobile crane with a large amount of space, higher load capacities can be achieved with the maximum component length of the guy mast. By extending the guy mast if necessary, a larger lever arm is possible between the guy line and the main boom, so that the forces in the guy line and the main boom are reduced or higher loads can be achieved with the same component strengths. The guy mast according to the invention is here, as is known from a lattice mast boom, divided into a base beam and one or more extension beams, which are then combined with one another in an extension position if necessary according to the desired length of the guy mast. In the extension position, the base support and the extension support (s) cannot be moved or adjusted relative to one another, but are simply bolted to one another and thus immovably and rigidly connected to one another. Rigid could then also be described as monolithic. In addition, the guy mast according to the invention, divided into a base beam and one or more extension beams, has a rope pulley at the head-side ends of the base beams or extension beams, so that advantageously a base beam is also ready for use without bolting at least one extension beam for bracing.
Nachteilig an den bekannten Lösungen, welche als Möglichkeit zur Verlängerung des Abspannmasts einen Hydraulikzylinder zum Austeleskopieren einzelner Teleskopschüsse vorsehen, ist, dass die abzuspannenden Kräfte während des Betriebs auf der Ölsäule des Hydraulikzylinders stehen. Außerdem nachteilig an den teleskopierbaren Systemen aus dem Stand der Technik ist, dass sie nicht kontinuierlich abnehmend querschnittoptimiert werden können und daher mehr Material verbaut werden muss, als eigentlich für eine Erhöhung der Traglast nötig wäre.The disadvantage of the known solutions, which provide a hydraulic cylinder to extend the guy mast as a way of extending individual telescopic sections, is that the forces to be guyed stand on the oil column of the hydraulic cylinder during operation. Another disadvantage of the telescopic systems from the prior art is that they cannot be optimized in a continuously decreasing cross-section and therefore more Material must be installed than would actually be necessary to increase the load capacity.
Grundsätzlich unterscheidet man bei Fahrzeugkranen zwischen Teleskopkranen und Gittermastkranen. Teleskopkrane zeichnen sich dadurch aus, dass der Kranausleger aus mehreren teleskopartig ineinander verschiebbaren Teleskopschüssen besteht, wohingegen bei einem Gittermastkran der Ausleger aus mehreren starr miteinander verbundenen Gittermastelementen besteht. Im vorliegenden Fall wird ein Fahrzeugkran als Mobilkran mit Teleskopausleger, Raupenkran mit Teleskopausleger oder als Raupenkran mit Gittermastausleger verstanden.In the case of mobile cranes, a basic distinction is made between telescopic cranes and lattice boom cranes. Telescopic cranes are characterized in that the crane boom consists of several telescopic sections that can be telescoped into one another, whereas in a lattice boom crane the boom consists of several rigidly interconnected lattice mast elements. In the present case, a mobile crane is understood as a mobile crane with a telescopic boom, a crawler crane with a telescopic boom or as a crawler crane with a lattice boom.
An dem Grundträger des Abspannmastes ist vorteilhaft im Bereich eines Grundträgerkopfes mindestens eine Anschlusslasche angeordnet und an dem Verlängerungsträger im Bereich eines Verlängerungsträgerfußes ist vorteilhaft mindestens eine Befestigungslasche angeordnet. Hierdurch ist in bevorzugter Weise der Verlängerungsträger über die Befestigungslasche an der Anschlusslasche des Grundträgers lösbar anbringbar. Eine Verlängerung des Abspannmasts ist somit vereinfacht. Insbesondere können die Anschlusslaschen als Kopfüberbau ausgestaltet sein. Der Kopfüberbau ermöglicht in vorteilhafter Weise eine seitliche Überbauung einer ebenfalls am Grundträgerkopf angeordneten Seilumlenkrolle, welche somit auch während einer Verlängerung des Grundträgers an diesem verbleiben kann. Eine Verlängerung des Abspannmastes ist somit weiter vereinfacht.At least one connection tab is advantageously arranged on the base carrier of the guy mast in the area of a base carrier head and at least one fastening tab is advantageously arranged on the extension carrier in the area of an extension carrier foot. As a result, the extension carrier can preferably be detachably attached via the fastening tab to the connection tab of the base carrier. An extension of the guy mast is thus simplified. In particular, the connection lugs can be designed as an overhead structure. The head superstructure advantageously enables a lateral overbuilding of a cable deflection pulley which is also arranged on the base support head and which can thus remain on the base support even when the base support is extended. Extending the guy mast is thus further simplified.
Besonders einfach kann die Befestigungslasche des Verlängerungsträgers über obere Bolzen und untere Bolzen mit der Anschlusslasche des Grundträgers lösbar verbunden werden.The fastening lug of the extension support can be detachably connected to the connection lug of the base support via upper bolts and lower bolts in a particularly simple manner.
Vorteilhaft ist zusätzlich zu einer am Grundträger im Bereich des Grundträgerkopfes angeordneten Seilumlenkrolle eine weitere Seilumlenkrolle im Bereich des Verlängerungsträgerkopfes des Verlängerungsträgers angeordnet. Dadurch ist es nicht notwendig, die am Grundträger angeordnete Seilumlenkrolle abzumontieren und nötigenfalls an den Kopf des Verlängerungsträgers anzubringen. Die Montage des Verlängerungsträgers ist also insgesamt vereinfacht.In addition to a cable deflection pulley arranged on the base carrier in the area of the base carrier head, a further cable deflection roller is advantageously arranged in the area of the extension carrier head of the extension carrier. As a result, it is not necessary to dismantle the cable deflection pulley arranged on the base carrier and, if necessary, to attach it to the head of the extension carrier. The assembly of the extension support is therefore simplified overall.
In bevorzugter Weise verfügt der Fahrzeugkran über zwei verlängerbare Abspannmasten am Hauptausleger, wobei die zwei verlängerbaren Abspannmasten v-förmig oder parallel angeordnet sind. Eine Stabilität des Hauptauslegers des Fahrzeugkrans ist somit erhöht.The mobile crane preferably has two extendable ones Guy masts on the main boom, whereby the two extendable guy masts are arranged in a V-shape or in parallel. A stability of the main boom of the mobile crane is thus increased.
Auch kann vorteilhaft zur weiteren flexiblen Traglaststeigerung mehr als ein Verlängerungsträger vorgesehen sein, die dann miteinander und hintereinander verbolzt werden, um den Abspannmast beziehungsweise den Grundträger weiter zu verlängern. Damit kann die Traglaststeigerung bei entsprechendem Schwenkradius nach hinten feiner gestaffelt werden.In order to further increase the flexible load capacity, more than one extension beam can advantageously be provided, which are then bolted to one another and one behind the other in order to further extend the guy mast or the base carrier. This means that the increase in load capacity can be staggered more finely towards the rear with the corresponding swivel radius.
Besonders bevorzugt ist der Hauptausleger ein Teleskopausleger und der mindestens eine Abspannmast ist am Grundkasten des Teleskopauslegers oder einem Teleskopschuss des Teleskopauslegers angeordnet.The main boom is particularly preferably a telescopic boom and the at least one guy mast is arranged on the base box of the telescopic boom or a telescopic section of the telescopic boom.
In einer bevorzugten Ausbildung ist der mindestens eine Verlängerungsträger ein Fachwerkträger, ein Kastenträger oder eine Kombination hieraus.In a preferred embodiment, the at least one extension beam is a truss, a box girder or a combination thereof.
Besonders bevorzugt ist der Abspannmast an dem Hauptausleger zwischen Fuß und Kopf des Hauptauslegers angeordnet. Aus statischen und dynamischen Gründen ist der Abspannmast somit nicht direkt am Kopf oder am Fuß des Hauptauslegers, sondern in einem mittleren Bereich des Hauptauslegers, vorzugsweise zumindest 25 % der Länge des Hauptauslegers von Kopf beziehungsweise Fuß entfernt, angeordnet.The guy mast is particularly preferably arranged on the main boom between the foot and head of the main boom. For static and dynamic reasons, the guy mast is therefore not arranged directly on the head or foot of the main boom, but in a central area of the main boom, preferably at least 25% of the length of the main boom from the head or foot.
Des Weiteren ist die Erfindung auf ein Verfahren zur Verlängerung eines Abspannmastes eines Hauptauslegers eines Fahrzeugkrans gerichtet, insbesondere eines erfindungsgemäßen Fahrzeugkrans, wobei der Abspannmast einen Grundträger mit einer Seilumlenkrolle im Bereich des Grundträgerkopfes und einen Verlängerungsträger mit einer weiteren Seilumlenkrolle im Bereich des Verlängerungsträgerkopfes umfasst. Durch das erfindungsgemäße Verfahren wird eine besonders einfache sowie sichere Anbringung eines Verlängerungsträgers an den Grundträgerkopf des Grundträgers vorgeschlagen. Dabei wird der Verlängerungsträger aus einer Transportstellung, in der der Verlängerungsträger getrennt von dem Grundträger ist, an den Grundträger herangeführt und dann der Grundträger durch Anbolzen des Verlängerungsträgers in einer Verlängerungsstellung verlängert. Hierbei verbleibt die Seilumlenkrolle an dem Grundträgerkopf. Es ist also insbesondere nicht notwendig, die Seilumlenkrolle am Grundträgerkopf abzumontieren. Es ist selbstverständlich, dass für eine weitere Verlängerung von Grundträger und Verlängerungsträger in der gleichen Weise wie zuvor beschrieben unter Erhalt der jeweiligen Seilumlenkrolle ein oder mehrere Verlängerungsträger an einen bereits montierten Verlängerungsträger hintereinander angeordnet werden können.Furthermore, the invention is directed to a method for extending a guy mast of a main boom of a vehicle crane, in particular a vehicle crane according to the invention, the guy mast comprising a base beam with a cable deflection roller in the area of the base beam head and an extension beam with a further cable deflection roller in the area of the extension beam head. The method according to the invention proposes a particularly simple and secure attachment of an extension support to the base support head of the base support. In this case, the extension carrier is brought up to the basic carrier from a transport position in which the extension carrier is separate from the basic carrier and then the basic carrier is brought into one by bolting the extension carrier Extension position extended. The rope deflection roller remains on the base support head. In particular, it is not necessary to dismantle the cable pulley on the base support head. It goes without saying that for a further extension of the base support and extension support in the same way as described above, one or more extension supports can be arranged one behind the other on an already mounted extension support while retaining the respective cable deflection pulley.
Ein Ausführungsbeispiel der Erfindung wird anhand der nachfolgenden Beschreibung näher erläutert. Es zeigen:
-
einen Fahrzeugkran in einer schematischen Seitenansicht mit aufgerichtetem Hauptausleger und Abspannmast,Figur 1 -
einen Fahrzeugkran nachFigur 2 mit einem an dem Abspannmast angeordneten Verlängerungsträger,Figur 1 -
Figur 3 eine Detailansicht des Abspannmastes aus undFigur 2 -
eine Detailansicht des Verlängerungsträgers des Abspannmastes ausFigur 4Figur 3 .
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Figure 1 a mobile crane in a schematic side view with erected main boom and guy mast, -
Figure 2 a mobile craneFigure 1 with an extension beam arranged on the guy mast, -
Figure 3 a detailed view of the guy mastFigure 2 and -
Figure 4 a detailed view of the extension beam of the guy mastFigure 3 .
Die
Der Abspannmast 7 besteht aus einem kastenförmigen Grundträger 8, an dessen freien Ende in Form eines Grundträgerkopfes 8a eine Seilumlenkrolle 8b angeordnet ist. Die Seilumlenkrolle 8b ist um eine quer zur Längsrichtung des Grundträgers 8 ausgerichtete Achse drehbar. Über die Seilumlenkrolle 8b ist der Abspannstrang 10 geführt, der einerseits an einem Kopf 5c des Hauptauslegers 5 und andererseits an einem Fuß 5b des Hauptauslegers 5 oder an dem Oberwagen 4 befestigt ist. In üblicher Weise ist dort dann eine Winde (nicht dargestellt in
Vorstehend ist beschrieben, den Abspannmast 7 an dem Grundkasten 5a des Hauptauslegers 5 anzubringen. Grundsätzlich ist es auch möglich, den Abspannmast 7 an einem der Teleskopschüsse des Hauptauslegers 5 anzubringen. Auch können mehrere Abspannmäste 7 voneinander beabstandet und entlang des Hauptauslegers 5 vorgesehen werden. Aus statischen und dynamischen Gründen ist es selbstverständlich, dass der Abspannmast 7 nicht direkt am Kopf 5c oder am Fuß 5b des Hauptauslegers 5 angeordnet ist, sondern in einem mittleren Bereich des Hauptauslegers 5, vorzugsweise zumindest 25 % der Länge des Hauptauslegers 5 von Kopf 5c beziehungsweise Fuß 5b entfernt. Demnach kann der Abspannmast 7 durchaus am Kopf des Grundkastens 5a oder einer der Köpfe der Teleskopschüsse mit Ausnahme des innersten beziehungsweise obersten angeordnet sein.It is described above how to attach the
Zur flexiblen Erhöhung der Traglast kann an dem Abspannmast 7 ein Verlängerungsträger 9 angebracht werden.To flexibly increase the load capacity, an
Die
Eine Detailansicht der Abspannvorrichtung 6 mit Abspannmast 7 und Abspannstrang 10 ist in der
Im Zusammenhang mit dem vorstehenden Ausführungsbeispiel sind der Grundträger 8 und der Verlängerungsträger 9 jeweils als Kastenträger beschrieben worden. Eine Ausbildung als Gittermast oder Mischform aus Kasten- und Gittermastbauweise ist auch denkbar. Auch kann mehr als ein Verlängerungsträger 9 vorgesehen sein, die dann miteinander verbolzt werden, um den Abspannmast 7 weiter zu verlängern. Die weiteren Verlängerungsträger 9 weisen dann die vorbeschriebene Bauweise des Verlängerungsträgers 9 auf, wobei Anschlusslaschen im Bereich des Verlängerungsträgerkopfs 9a angeordnet sind. Alle Grundträger 8 und Verlängerungsträger 9 weisen jeweils eine Seilumlenkrolle 8b, 9b auf.In connection with the above exemplary embodiment, the
Des Weiteren können die Grundträger 8 und der beziehungsweise die Verlängerungsträger 9 in Bezug auf ihren Querschnitt an die statischen Erfordernisse angepasst werden, d.h. ausgehend vom Hauptausleger 5 sich nach außen verjüngen. Auch können in bekannter Weise zu einer weiteren Traglasterhöhung zwei Abspannstränge 10 über jeweils eine der Seilumlenkrollen 8b, 9b geführt werden.Furthermore, the base supports 8 and the extension support (s) 9 can be adapted to the static requirements with regard to their cross-section, i.e. starting from the
Alternativ oder zusätzlich können auch zwei Abspannmäste 7 mit entsprechenden Abspannsträngen 10 vorgesehen werden. Die zwei Abspannmäste 7 werden dann auf einer Höhe an dem Grundkasten 5a beziehungsweise an einem der Teleskopschüsse befestigt und erstrecken sich ausgehend von dem Grundkasten 5a beziehungsweise dem jeweiligen Teleskopschuss v-förmig oder parallel nach hinten.Alternatively or additionally, two
In der
Auch ist in der
- 1 Fahrzeugkran1 mobile crane
- 2 Unterwagen2 undercarriages
- 3 Drehverbindung3 slewing ring
- 4 Oberwagen4 superstructures
- 5 Hauptausleger5 main boom
- 5a Grundkasten5a basic set
- 5b Fuß5b feet
- 5c Kopf5c head
- 6 Abspannvorrichtung6 tensioning device
- 7 Abspannmast7 guy mast
- 7a Abspannmastkopf7a guy mast head
- 8 Grundträger8 basic supports
- 8a Grundträgerkopf8a base support head
- 8b Seilumlenkrolle8b pulley
- 8c Anschlusslaschen8c connection lugs
- 9 Verlängerungsträger9 extension bars
- 9a Verlängerungsträgerkopf9a extension beam head
- 9b Seilumlenkrolle9b pulley
- 9c Befestigungslaschen9c fastening straps
- 9d Verlängerungsträgerfuß9d Extension support foot
- 10 Abspannstrang10 guy line
- 10' weiterer Abspannstrang10 'further guy line
- 11a obere Bolzen11a top bolt
- 11b untere Bolzen11b lower bolts
Claims (9)
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DE102019110608.7A DE102019110608A1 (en) | 2019-04-24 | 2019-04-24 | Mobile crane with extendable guy mast |
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EP3730448A1 true EP3730448A1 (en) | 2020-10-28 |
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EP20170300.6A Pending EP3730448A1 (en) | 2019-04-24 | 2020-04-20 | Mobile crane with extendable guy mast |
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DE (1) | DE102019110608A1 (en) |
Citations (8)
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---|---|---|---|---|
EP0376417A1 (en) * | 1988-12-19 | 1990-07-04 | MANNESMANN Aktiengesellschaft | Multiple pin connection |
DE202005005627U1 (en) * | 2005-04-08 | 2006-08-17 | Liebherr-Werk Ehingen Gmbh | Crane with anchoring device for moving loads has at least one anchoring support fixed to rocker cylinder |
DE202005009317U1 (en) | 2005-06-14 | 2006-10-19 | Liebherr-Werk Ehingen Gmbh | Telescopic crane, has bracing device with V-shaped bracing supports which are bent opposite to rocker level, where bracing supports are supported according to type of derrick mechanism at revolving stage |
DE10022600B4 (en) | 1999-06-28 | 2007-09-27 | Terex-Demag Gmbh & Co. Kg | telescopic crane |
DE202008006167U1 (en) * | 2008-05-06 | 2008-07-17 | Terex-Demag Gmbh | Laterally strained lattice mast |
EP2253575A1 (en) * | 2009-05-20 | 2010-11-24 | Manitowoc Crane Companies, LLC | Crane backstay spreader |
DE102012025131A1 (en) | 2012-12-21 | 2014-07-10 | EMC GbR, vertretungsberechtigte Gesellschafter: Dr. Steffen Kaspar, Edelgard Kaspar | Anchoring device for boom device of load lifting device, particularly for telescopic boom device of crane, has superstructure, boom, rocker cylinder and anchoring support, which is hinged at superstructure in area of boom pivot axis |
DE102016009811A1 (en) | 2016-07-21 | 2018-01-25 | Liebherr-Werk Ehingen Gmbh | Telescopic boom with spatial bracing |
-
2019
- 2019-04-24 DE DE102019110608.7A patent/DE102019110608A1/en active Pending
-
2020
- 2020-04-20 EP EP20170300.6A patent/EP3730448A1/en active Pending
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0376417A1 (en) * | 1988-12-19 | 1990-07-04 | MANNESMANN Aktiengesellschaft | Multiple pin connection |
DE10022600B4 (en) | 1999-06-28 | 2007-09-27 | Terex-Demag Gmbh & Co. Kg | telescopic crane |
DE202005005627U1 (en) * | 2005-04-08 | 2006-08-17 | Liebherr-Werk Ehingen Gmbh | Crane with anchoring device for moving loads has at least one anchoring support fixed to rocker cylinder |
DE202005009317U1 (en) | 2005-06-14 | 2006-10-19 | Liebherr-Werk Ehingen Gmbh | Telescopic crane, has bracing device with V-shaped bracing supports which are bent opposite to rocker level, where bracing supports are supported according to type of derrick mechanism at revolving stage |
DE202008006167U1 (en) * | 2008-05-06 | 2008-07-17 | Terex-Demag Gmbh | Laterally strained lattice mast |
EP2253575A1 (en) * | 2009-05-20 | 2010-11-24 | Manitowoc Crane Companies, LLC | Crane backstay spreader |
DE102012025131A1 (en) | 2012-12-21 | 2014-07-10 | EMC GbR, vertretungsberechtigte Gesellschafter: Dr. Steffen Kaspar, Edelgard Kaspar | Anchoring device for boom device of load lifting device, particularly for telescopic boom device of crane, has superstructure, boom, rocker cylinder and anchoring support, which is hinged at superstructure in area of boom pivot axis |
DE102016009811A1 (en) | 2016-07-21 | 2018-01-25 | Liebherr-Werk Ehingen Gmbh | Telescopic boom with spatial bracing |
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