EP3793929A1 - Grue de véhicule comprenant un adaptateur mobile agencé entre une flèche principale et une rallonge de flèche principale - Google Patents

Grue de véhicule comprenant un adaptateur mobile agencé entre une flèche principale et une rallonge de flèche principale

Info

Publication number
EP3793929A1
EP3793929A1 EP19732600.2A EP19732600A EP3793929A1 EP 3793929 A1 EP3793929 A1 EP 3793929A1 EP 19732600 A EP19732600 A EP 19732600A EP 3793929 A1 EP3793929 A1 EP 3793929A1
Authority
EP
European Patent Office
Prior art keywords
main boom
adapter
mobile crane
connection level
extension
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.)
Granted
Application number
EP19732600.2A
Other languages
German (de)
English (en)
Other versions
EP3793929B1 (fr
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 EP3793929A1 publication Critical patent/EP3793929A1/fr
Application granted granted Critical
Publication of EP3793929B1 publication Critical patent/EP3793929B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/18—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 specially adapted for use in particular purposes
    • B66C23/36—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 specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
    • B66C23/42—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 specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes with jibs of adjustable configuration, e.g. foldable
    • 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
    • B66C23/64—Jibs
    • B66C23/68—Jibs foldable or otherwise adjustable in configuration
    • 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
    • B66C23/64—Jibs
    • B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
    • B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
    • B66C23/702—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic with a jib extension boom

Definitions

  • the invention relates to a mobile crane, in particular a mobile crane or crawler crane, with a main boom, a main boom extension and an adapter arranged between the main boom and the main boom extension with a first connection level and a second connection level, the adapter being designed to be movable such that the first connection level is relative to the second connection level is movable.
  • a vehicle crane with a telescopic main boom and a main boom extension is known from German utility model DE 201 07 984 U1.
  • the main boom extension is attached to a head of the main boom via an adapter.
  • the rigid adapter is fixed at its lower end and thus a first connection level to the head of the main boom and at its upper end the main boom extension and thus a second connection level is mounted so that it can be rocked about a horizontal luffing axis.
  • a total of four luffing supports are arranged, each projecting in pairs in the longitudinal direction of the main boom extension and projecting backwards in a V-shape and with ropes or guy rods arranged at their ends.
  • the luffing axis either at the front on the edge of the adapter or centrally on the adapter.
  • German patent application DE 10 2016 009 038 A1 discloses one
  • the adapter is not designed to be rigid.
  • the adapter is only rigidly attached to the boom head on the one hand, but on the other hand, is for attaching the main boom extension around a luffing axis
  • this fastening frame can be pivoted at the end opposite its luffing axis by means of an adjusting cylinder, whereby a luffing of the main boom extension can be achieved.
  • the adjustment cylinder is supported on the adapter outside as a mounting frame.
  • Adjustable cylinder a length that can be changed in stages by means of bolts
  • the main boom extension can also be attached to the main boom or the adapter in other fixed angular positions.
  • the main boom extension can be pivoted relative to the main boom or the adapter via two bolt connections.
  • This pivoting movement and the subsequent fixing in the other angular position can be carried out by means of hydraulic cylinders or other auxiliary drives connected to brackets.
  • the load transfer in particular that of the transverse force, takes place only via the two bolt connections which absorb the forces acting transversely to a system axis.
  • the torsional moments are also only distributed over two bolt connections because the hydraulic cylinders or brackets are articulated.
  • the invention has for its object to provide a mobile crane with an adapter between the main boom and main boom extension, the load capacity is improved and the set-up is simplified.
  • Main boom a main boom extension and one between the
  • a luffing movement of the main boom extension relative to the main boom can be realized passively during the set-up or actively during operation of the mobile crane under load.
  • Main boom extension is movable relative to the main boom, on the one hand a simplified set-up in a position of the articulation point "in front” can take place and after a movement or adjustment of the adapter in a position of the articulation point "in the middle” the statics and thus the load-bearing capacity can be improved.
  • the location of the articulation point "in front” means that the articulation point or the luffing axis in the second connection plane is offset from the center of the adapter, which faces the floor or a counterweight of the mobile crane, i.e. in the direction of the main boom extension.
  • the main boom extension can be easily set up.
  • main booms with a pivot point in the middle there are also main booms with a pivot point in the middle
  • Main boom head known at a distance from the lateral outer edge.
  • the articulation points or the components of the articulation points depend on
  • Main boom extension can be reached in the main boom.
  • the main boom can be designed correspondingly lighter or reaches higher loads.
  • the axle loads for mobile cranes is based on the weight and therefore also the weight of the main boom.
  • the adapter is attached indirectly to a main boom head of the main boom with its first connection level and is indirectly attached to a foot piece of the main boom extension with its second connection level.
  • additional intermediate pieces preferably as lattice mast elements, can thus be provided between the first connection level and the main boom head and / or the second
  • connection level and the foot piece of the main boom extension are provided, which can serve as an adapter and / or extension, for example.
  • an existing adapter in another size can also be used between the main boom and main boom extension in the sense of the invention.
  • the adapter is attached with its first connection level directly to a main boom head of the main boom and / or, preferably and with its second connection level, is attached directly to a foot piece of the main boom extension. This advantageously optimizes power transmission and mobility in the region of the adapter which is arranged near the main boom head and / or the foot piece.
  • the adapter is designed as a double rocker.
  • the design as a double rocker allows in particular a defined mobility of the adapter and the adapter combines mobility with high static stability.
  • the adapter seen transversely and laterally to a longitudinal direction of the main boom, consists of a frame element, a rocker element, a coupling element and a crank element, which over parallel first, second, third and fourth joint axes are circumferentially connected and between two diagonally opposite
  • Connection level lie and the second and third hinge axis in the second
  • the adapter is preferably designed to be movable such that the first connection level shifts laterally relative to the second connection level.
  • the first and second connection levels therefore preferably do not move parallel to one another. Rather, it is advantageously provided that the adapter is designed to be movable such that the first connection level is laterally displaced and angled relative to the second connection level.
  • the diagonal element can be designed differently.
  • the diagonal element is particularly preferably a piston-cylinder unit, in particular continuously adjustable.
  • the diagonal element can be locked in different lengths
  • a 0 ° position, a 20 ° position or a 40 ° position of the main boom extension relative to the main boom can preferably be set.
  • the adapter with sliding tab as a diagonal can be any other preset angle between the main boom and
  • the diagonal element is a belt of a preselected length, which can be exchanged for a change of position.
  • the preselected length of the belt advantageously corresponds to a 0 ° position, a 20 ° position or a 40 ° position of the main boom extension to the main boom.
  • diagonal element can be adjusted, preferably continuously, by means of a toothed rail and gear drive.
  • the frame element, the rocker element, the coupling element and the crank element are different long.
  • the same length of crank element and rocker element is preferred if, for example, you want to provide a pure displacement, but not a large rotation of the main boom extension.
  • the rigid design of the movable adapter advantageously allows the adapter to be designed to be movable under load.
  • the positioning of the adjustable diagonal element in the diagonal of the adapter is particularly advantageous, since when the diagonal element is actively moved, the main forces are directed through the crank element and the oscillating element and the diagonal element, in particular the piston-cylinder unit, only the forces transverse to Must remove the system axis.
  • Figure 1 is a schematic side view of a mobile crane with a
  • FIGs 2a to 2c a detailed view of the mobile crane according to Figure 1 from the area of an adapter between the main boom and the
  • Figure 3 is a schematic side view of a mobile crane with a
  • FIGs 4a to 4c a detailed view of the mobile crane according to Figure 3 from the area of an adapter between the main boom and the
  • FIG. 1 is a schematic and side view of a mobile crane 1, especially a mobile crane that can be moved on public roads
  • Essentially consists of an undercarriage 2 and an uppercarriage 3.
  • Undercarriage 2 has a driver's cab 4 and four vehicle axles 5, each with two rubber tires with wheels 6 suitable for road use.
  • the undercarriage 2 can
  • the undercarriage 2 also carries the superstructure 3, which can be pivoted about an essentially vertically oriented axis of rotation D with respect to the undercarriage 2 by means of a pivot bearing 7.
  • the superstructure 3 and the undercarriage 2 can of course also be mounted rigidly on one another.
  • the main boom 8 is designed as a telescopic boom. It is of course possible that the
  • Main boom 8 as a lattice boom and / or the mobile crane 1 as
  • Crawler crane can be designed.
  • Main boom 8 consists of a boom base box 10 and a plurality of telescopic sections 10a to 10d which can be extended and retracted, one inside the other.
  • the innermost and therefore smallest telescopic section 10d has a main boom head 11 at its upper or outer end.
  • a movable adapter 12 is fastened to the main boom head 11 in a first connection plane I via four bolts or head axes, not shown.
  • the adapter 12 is designed as a cuboid lattice mast element.
  • a so-called rigid is in a second connection level II via four further bolts, not shown
  • Main boom extension 16 connected, which is aligned in the usual way only in one orientation to the main boom 8 via the adapter 12.
  • the adapter 12 is designed to be limitedly movable and lockable in such a way that the main boom extension 16 with its longitudinal direction v can be connected to the adapter 12 in a preselected orientation to the longitudinal direction h of the main boom 8 or the adapter 12 with the main boom extension 16 connected can be aligned accordingly ,
  • the main boom extension 16 is inclined to the main boom 8 by an angle b of approximately 20 °.
  • the main boom 8 also comprises a first guy support 18, which is arranged at the head of the boom base box 10 and points backwards at right angles, via which a first guy rope 18a runs from the foot of the base box 10 via the guy support 18 to the main boom head 11.
  • the main boom extension 16 is usually divided into a lattice boom, which is usually a truss tube construction, and an adjoining jib 16b, which is designed as a box boom or truss tube construction.
  • Such main boom extensions 16 are fundamentally constructed as modular systems from individual main elements and, depending on the requirements, can be adjusted in terms of their length or
  • Load capacity can be compiled.
  • the individual main elements have transportable dimensions and in most cases are not carried along with the mobile crane 1, but are transported separately. If the axle loads of the mobile crane 1 and the size of the main boom extension 16 permit, the main boom extension 16 can be carried as required.
  • FIGS. 2a, 2b and 2c show a detailed view of the adapter 12 of the
  • Lattice mast element formed adapter 12 is seen from the side per side based on the usual way used for a four-bar linkage
  • crank elements 13a of which Figures 2a to 2c show only the front, connected to a rear frame via upper and lower cross members, not shown.
  • the front frame and the rear frame are then connected to the adapter 12 via the two frame elements 13c and the two coupling elements 13d.
  • the geometric relationships, in particular the lengths, of the crank element 13a, the rocker element 13b, the frame element 13c and the coupling element 13d to one another are selected such that in a 0 ° position or
  • a first connection level I runs parallel to a second connection level II.
  • the first two joint axes A and the fourth fourth lie in the first connection level I.
  • the second two are in the second connection level II
  • connection planes I and II which are parallel to one another and the lengths of the crank element 13a and the
  • Swing element 13b, the longitudinal extension v of the main boom extension 16 run parallel to the longitudinal extension h of the main boom 8 and are not aligned with one another, but offset laterally to one another - seen in a side view of the main boom 8.
  • Coupling elements 13d are in particular of unequal length and are arranged at an acute angle to one another. Compared to a conventional four-bar linkage, the crank element 13a and also the oscillating element 13b are not arranged all around, but only pivot about the associated joint axes A and D in order to bring about the desired displacement of the connection level II to the connection level I. In order to limit the mobility of the adapter 12 or the
  • At least one diagonal element 14 is provided, which is arranged in a diagonal of the quadrangle formed by the elements 13a to 13d.
  • the diagonal element 14 acts on the one hand in an articulated manner in the region of the articulation axis A on a tab of the oscillating element 13b and on the other hand articulately in the area of the articulated axis C on a tab of the crank element 13a.
  • a front and a rear diagonal element 14 are respectively provided in the front and the rear quadrilateral of the adapter 12.
  • the diagonal element 14 is preferably designed as a sliding tab that can be locked in different lengths by means of bolts. Training as a set of rods, each with a fixed length, is also conceivable. It is also advantageously possible to use the diagonal element 14 as a hydraulically driven piston-cylinder unit
  • the length of the diagonal element 14 can also be designed to be adjustable and fixable by means of a toothed rail and a gear drive which meshes with it.
  • the diagonal element 14 additionally also stiffens the adapter 12.
  • Figures 2a to 2c is a lattice piece from the foot area of the
  • the main boom extension 16 is shown schematically, which is connected to the adapter 12, in particular to the coupling element 13d, via tabs and corresponding bolts (not shown). As a result, the longitudinal direction v of the main boom extension 16 is then oriented at right angles to the coupling element 13d.
  • the grid piece schematically represented as a rectangle
  • the main boom extension 16 is part of the lattice mast-like design of the main boom extension 16 in the usual manner.
  • FIG. 2a shows the adapter 12 in a basic position which, in relation to the parallel orientation of the longitudinal direction h of the main boom 8 to the longitudinal direction v of the main boom extension 16, is in a 0 ° position
  • Main boom extension 16 corresponds.
  • the diagonal element 14 has its shortest length.
  • FIG. 2a also shows that the central longitudinal direction v of the main boom extension 16 is offset laterally to the left to the central one
  • the longitudinal direction h of the main boom 8 is arranged and in this case a central longitudinal direction v of the main boom extension 16 lies approximately in the extension of an upper side of the main boom 8.
  • the adapter 12 per se is inclined to the left in particular with respect to its crank element 13a and its oscillating element 13b.
  • the adapter 12 can be pivoted laterally as described above.
  • the second connection level II shifts laterally to the first connection level I and, starting from the parallel basic position, tilts into any angle, preferably into the usual 20 ° position or 40 ° position.
  • the same then applies to the alignment of the longitudinal direction v of the main boom extension 16 to the
  • FIG. 2b also shows that the central longitudinal direction v of the main boom extension 16 in the foot piece 16a is approximately in
  • the adapter 12 as such is almost upright, in particular with respect to its crank element 13a and its oscillating element 13b, even if they are inclined to the left or right.
  • Figure 2c shows the adapter 12 in a 40 ° position
  • FIG. 2c also shows that the central longitudinal direction v of the
  • Main boom extension 16 laterally offset to the right to the center
  • the longitudinal direction h of the main boom 8 is arranged and in this case a central longitudinal direction v of the main boom extension 16 on the foot piece 16a is approximately in the extension of a lower side of the main boom 8.
  • the adapter 12 per se is inclined to the right, in particular with respect to its crank element 13a and its oscillating element 13b.
  • FIG. 3 shows a schematic side view of the mobile crane 1 with a main boom 8 according to FIG. 1, on which instead of a rigid one
  • Main boom extension 16 a luffing main boom extension 16 is arranged. With regard to the corresponding parts of the mobile crane 1, reference is therefore made to the above description of FIG. 1. Only the differences are discussed below.
  • the lattice mast-like foot piece 16a is designed in a wedge-shaped manner in the manner of a flat tip with a tip directed in the direction of the main boom 8.
  • the rocking axis w extends over the entire width of the foot piece 16a, which is formed from one or more bolt connections.
  • the luffing axis w is oriented transversely to the longitudinal direction h of the main boom extension 16 and largely horizontally. It can also be seen that the rocking axis w is arranged approximately in the middle with respect to the front and rear of the adapter 12.
  • the embodiment according to FIG. 3 includes a second guy of the main boom extension 16.
  • a second guy support 19a and a third guy support 19b are connected in the region of the luffing axis w.
  • a guy rope 19c is led from the superstructure 3 to the guy support 19b and guy rods to a point approximately in the middle of the main boom extension 16.
  • the main boom extension 16 is actively rocked even under load via this guy rope 19c.
  • FIGS. 4a, 4b and 4c show a detailed view of the adapter 12 of the
  • Guy supports 19a, 19b are not shown in FIGS. 4a to 4c for reasons of clarity. It can also be seen from FIGS. 4a, 4b and 4c that, contrary to the embodiment shown in FIG. 3, the rocking axis w is preferably even slightly in the area between the front third joint axis C and not in the middle between the second joint axes B and the third joint axes C. is arranged projecting forward over the third hinge axis C and thus the edge of the adapter 12 and the main boom head 11 adjoining it.
  • the arrangement of the luffing axis w allows the main boom extension 16 to be set up, in which the main boom extension 16 hangs vertically downward on the erected main boom 8. This position of the main boom extension 16 is indicated in FIG. 4c.
  • the adapter 12 according to FIGS. 4a to 4c has a diagonal element 14 designed as a piston-cylinder unit in order to allow the main boom extension 16 to be continuously rocked about the luffing axis w in active operation.
  • the adapter 12 in FIGS. 4a to 4c is shown in a 0 ° position, a 20 ° position and a 40 ° position.
  • the diagonal element 14 is accordingly extended to different extents.
  • the diagonal element 14 has been extended a little and is no longer in the almost completely extended position, as shown in FIG. 4c.
  • FIG. 4c corresponds to the 40 ° position of the main boom 8, adapter 12 and main boom extension 16.
  • the diagonal element 14 has been moved in a further distance for this purpose.
  • the present invention is above in connection with a mobile crane with a telescopic main boom 8 and a lattice mast-like
  • Main boom extension 16 has been described. Since the essence of the invention relates to the pivotable configuration of the adapter 12, the idea is also applicable to other configurations and combinations of the main boom 8 and
  • Main boom extension 16 and this can be transferred to other mobile cranes 1 such as a crawler crane.
  • the frame member 13c, the Swing element 13b, the coupling element 13d and the crank element 13a are each described as having different lengths. Seen in the side view, a parallelogram-like design of the adapter 12 is also conceivable, in which at least the crank element 13a and the oscillating element 13b have the same length.
  • the main boom extension 16 can then be moved laterally and without rocking to the main boom 8 via this adapter 12. This version could be useful in connection with a luffing main boom extension 16.
  • Main boom head 11 is replaced. Furthermore, its function is retained if the coupling element 13d is replaced by other components, such as a further adapter piece or the foot piece 16a.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)

Abstract

L'invention concerne une grue de véhicule (1), en particulier une grue mobile ou une grue à chenilles, comprenant une flèche principale (8), une rallonge de flèche principale (16) et un adaptateur (12) agencé entre la flèche principale (8) et la rallonge de flèche principale (16), comprenant un premier plan d'assemblage (I) et un second plan d'assemblage (II), l'adaptateur (12) étant conçu de façon à être mobile, de manière à ce que le premier plan d'assemblage (I) soit mobile par rapport au second plan d'assemblage (II). Selon l'invention, afin de fournir une grue de véhicule présentant une capacité de charge améliorée et permettant un montage simplifié, l'adaptateur (12) est conçu sous la forme d'une manivelle double.
EP19732600.2A 2018-06-27 2019-06-19 Grue de véhicule comprenant un adaptateur mobile agencé entre une flèche principale et une rallonge de flèche principale Active EP3793929B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018115519.0A DE102018115519B3 (de) 2018-06-27 2018-06-27 Fahrzeugkran mit einem beweglichen Adapter zwischen Hauptausleger und Hauptauslegerverlängerung
PCT/EP2019/066130 WO2020002066A1 (fr) 2018-06-27 2019-06-19 Grue de véhicule comprenant un adaptateur mobile agencé entre une flèche principale et une rallonge de flèche principale

Publications (2)

Publication Number Publication Date
EP3793929A1 true EP3793929A1 (fr) 2021-03-24
EP3793929B1 EP3793929B1 (fr) 2023-08-02

Family

ID=67001783

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19732600.2A Active EP3793929B1 (fr) 2018-06-27 2019-06-19 Grue de véhicule comprenant un adaptateur mobile agencé entre une flèche principale et une rallonge de flèche principale

Country Status (5)

Country Link
US (1) US11702324B2 (fr)
EP (1) EP3793929B1 (fr)
JP (1) JP7309760B2 (fr)
DE (1) DE102018115519B3 (fr)
WO (1) WO2020002066A1 (fr)

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Publication number Priority date Publication date Assignee Title
DE102020129454B4 (de) 2020-11-09 2023-08-17 Tadano Demag Gmbh Fahrzeugkran mit einem Auslegersystem
DE102020129762B3 (de) 2020-11-11 2022-02-17 Tadano Demag Gmbh Teleskopausleger eines Mobilkrans
DE102020134714B4 (de) * 2020-12-22 2023-09-28 Tadano Demag Gmbh Fahrzeugkran mit einem wippbaren Hauptausleger und mit einem Zusatzauslegersystem
DE202022104596U1 (de) 2022-08-12 2022-08-30 Tadano Demag GmbH Anschlussabschnitt für einen Zusatzausleger eines Fahrzeugkrans und Fahrzeugkran hiermit

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GB1470488A (en) * 1975-05-21 1977-04-14 Hiab Foco Ab Crane adapted to be mounted on a vehicle
FR2682097A1 (fr) * 1991-10-02 1993-04-09 Potain Sa Fleche a repliage automatise pour grue.
DE4314779C2 (de) * 1993-05-05 2000-02-03 Terex Peiner Gmbh Zusammenklappbarer Fachwerk-Ausleger für einen Turmkran
JP3258472B2 (ja) * 1993-11-08 2002-02-18 株式会社小松製作所 水平ブームの張り出し、格納装置
FR2732000B1 (fr) * 1995-03-22 1997-05-30 Potain Sa Grue a montage automatise avec fleche repliable sur elle-meme
FR2765564B1 (fr) * 1997-07-02 1999-08-27 Potain Sa Mature pliable en trois elements avec dispositif de pliage/depliage pour grue a tour
FR2790252B1 (fr) * 1999-02-26 2001-04-06 Potain Sa Dispositif de depliage ou repliage simultane d'elements de pointe de fleche de grue
DE20107984U1 (de) 2000-04-28 2001-12-06 Demag Mobile Cranes GmbH, 66482 Zweibrücken Fahrzeugkran mit wippbarem Hilfsausleger
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US7878346B1 (en) * 2008-08-25 2011-02-01 Link-Belt Construction Equipment Co., L.P., Lllp Adaptable boom extension for a mobile crane having a telescoping boom
CN101898728B (zh) 2009-05-26 2012-01-04 徐州重型机械有限公司 用于起重机的副起重臂
DE102015001619B4 (de) * 2015-02-09 2021-03-04 Liebherr-Werk Ehingen Gmbh Auslegersystem für einen Mobilkran sowie Mobilkran
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Also Published As

Publication number Publication date
DE102018115519B3 (de) 2019-09-12
US11702324B2 (en) 2023-07-18
JP2021528337A (ja) 2021-10-21
US20210261388A1 (en) 2021-08-26
EP3793929B1 (fr) 2023-08-02
JP7309760B2 (ja) 2023-07-18
WO2020002066A1 (fr) 2020-01-02

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