EP3730448A1 - Grue mobile pourvue de mât extensible - Google Patents

Grue mobile pourvue de mât extensible Download PDF

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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
Application number
EP20170300.6A
Other languages
German (de)
English (en)
Inventor
Christian Moritz Urban
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tadano Demag GmbH
Original Assignee
Tadano Demag GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tadano Demag GmbH filed Critical Tadano Demag GmbH
Publication of EP3730448A1 publication Critical patent/EP3730448A1/fr
Pending legal-status Critical Current

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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
    • 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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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
EP20170300.6A 2019-04-24 2020-04-20 Grue mobile pourvue de mât extensible Pending EP3730448A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102019110608.7A DE102019110608A1 (de) 2019-04-24 2019-04-24 Fahrzeugkran mit verlängerbarem Abspannmast

Publications (1)

Publication Number Publication Date
EP3730448A1 true EP3730448A1 (fr) 2020-10-28

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ID=70333837

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20170300.6A Pending EP3730448A1 (fr) 2019-04-24 2020-04-20 Grue mobile pourvue de mât extensible

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EP (1) EP3730448A1 (fr)
DE (1) DE102019110608A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0376417A1 (fr) * 1988-12-19 1990-07-04 MANNESMANN Aktiengesellschaft Connexion à plusieurs broches
DE202005005627U1 (de) * 2005-04-08 2006-08-17 Liebherr-Werk Ehingen Gmbh Kran sowie Abspannvorrichtung hierfür
DE202005009317U1 (de) 2005-06-14 2006-10-19 Liebherr-Werk Ehingen Gmbh Kran
DE10022600B4 (de) 1999-06-28 2007-09-27 Terex-Demag Gmbh & Co. Kg Teleskopkran
DE202008006167U1 (de) * 2008-05-06 2008-07-17 Terex-Demag Gmbh Seitlich abgespannter Gittermast
EP2253575A1 (fr) * 2009-05-20 2010-11-24 Manitowoc Crane Companies, LLC Palonnier de galhauban de grue
DE102012025131A1 (de) 2012-12-21 2014-07-10 EMC GbR, vertretungsberechtigte Gesellschafter: Dr. Steffen Kaspar, Edelgard Kaspar Kranausleger
DE102016009811A1 (de) 2016-07-21 2018-01-25 Liebherr-Werk Ehingen Gmbh Teleskopausleger mit räumlicher Abspannung

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0376417A1 (fr) * 1988-12-19 1990-07-04 MANNESMANN Aktiengesellschaft Connexion à plusieurs broches
DE10022600B4 (de) 1999-06-28 2007-09-27 Terex-Demag Gmbh & Co. Kg Teleskopkran
DE202005005627U1 (de) * 2005-04-08 2006-08-17 Liebherr-Werk Ehingen Gmbh Kran sowie Abspannvorrichtung hierfür
DE202005009317U1 (de) 2005-06-14 2006-10-19 Liebherr-Werk Ehingen Gmbh Kran
DE202008006167U1 (de) * 2008-05-06 2008-07-17 Terex-Demag Gmbh Seitlich abgespannter Gittermast
EP2253575A1 (fr) * 2009-05-20 2010-11-24 Manitowoc Crane Companies, LLC Palonnier de galhauban de grue
DE102012025131A1 (de) 2012-12-21 2014-07-10 EMC GbR, vertretungsberechtigte Gesellschafter: Dr. Steffen Kaspar, Edelgard Kaspar Kranausleger
DE102016009811A1 (de) 2016-07-21 2018-01-25 Liebherr-Werk Ehingen Gmbh Teleskopausleger mit räumlicher Abspannung

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Publication number Publication date
DE102019110608A1 (de) 2020-10-29

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