EP4077197B1 - Grue de navire de haute mer - Google Patents

Grue de navire de haute mer Download PDF

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Publication number
EP4077197B1
EP4077197B1 EP20833870.7A EP20833870A EP4077197B1 EP 4077197 B1 EP4077197 B1 EP 4077197B1 EP 20833870 A EP20833870 A EP 20833870A EP 4077197 B1 EP4077197 B1 EP 4077197B1
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EP
European Patent Office
Prior art keywords
boom
leg
jack
crane
legs
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Active
Application number
EP20833870.7A
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German (de)
English (en)
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EP4077197A1 (fr
Inventor
Joop Roodenburg
Marc Louis Brinkman
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Huisman Equipment BV
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Itrec BV
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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
    • B66C23/52—Floating cranes
    • 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
    • B66C23/185—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 for use erecting wind turbines
    • 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

Definitions

  • the invention relates to an offshore vessel crane that is configured for mounting on an offshore vessel.
  • the offshore wind turbine is installed or serviced using a jack-up vessel that is positioned close to the wind turbine location and then the jack-up legs are extended and the vessel is lifted, at least in part but mostly entirely above the sea, to provide a stabilized situation for the crane operation.
  • the invention is primarily envisaged for the field of offshore wind turbines, so for maintenance, and also for installation and/or decommission of wind turbines.
  • the inventive crane may also be of use in other offshore applications, like oil & gas related operations, civil engineering operations, etc.
  • WO2018208158A1 discloses a hoisting crane for use on an offshore vessel, such a vessel and a method for hoisting an offshore wind turbine component wherein use is made of such a crane and/or vessel.
  • the hoisting crane comprises a base structure, a superstructure, a boom having a longitudinal axis and a length of 80-200 meters.
  • the boom comprises a proximal portion connected to the boom connection member, formed integrated via a joint structure with a single distal leg, wherein the length of the distal leg between the joint and the boom head structure exceeds 30 meters.
  • WO2018208158A1 discloses an offshore vessel crane according to the preamble of the independent claim 1.
  • WO 2018/199743 A2 discloses a motion compensating crane for use on an offshore vessel having a hull with a design waterline, wherein the crane comprises a revolving superstructure, a main boom mounted to the revolving superstructure and pivotally connected at an inner end thereof about a substantially horizontal boom pivot axis to the revolving superstructure, said main boom having a tip end remote from said inner end, a main boom luffing assembly adapted to set an angle of the main boom relative to the superstructure within a main boom working range.
  • WO 2018/052283 A1 discloses a telescopic lattice type crane boom for a crane, further comprising a locking system configured to lock at least one telescopic boom section with respect to a base boom section in at least an extended position, wherein said locking system includes a plurality of pins, each pin being configured to extend, in at least the extended position of the boom, at least partly through a corresponding pin receiving aperture provided in one of the base boom section and the at least one telescopic boom section.
  • offshore cranes comprising:
  • a boom having a single leg embodied as a latticed hollow box structure is known.
  • a known alternative is a A-frame booms which has generally the shape of an A with two boom legs connected, each embodied as a latticed hollow box structure.
  • Another known example is a twin leg boom with two parallel legs, each embodied as a latticed hollow box structure, wherein the legs are interconnected by multiple cross members, distributed over the length thereof, interconnecting the boom legs.
  • the present invention aims to provide a crane having enhanced versatility and capabilities, e.g. in view of increasing demands in the field of offshore wind turbines.
  • the present invention provides an offshore crane according to claim 1.
  • the boom has a main boom structure having a left-hand boom leg and a right-hand boom leg, each of these two boom legs having a proximal end portion that is pivotally connected to the left-hand connector and to the right-hand hand connector respectively.
  • Each of the two boom legs has a length of at least 60 meters, e.g. between 80 and 140 meters.
  • the legs of the main boom structure have a length of more than 100 meter, e.g. of about 120 meters.
  • the legs are rigid, unitary legs, e.g. welded steel unitary legs, each having a fixed length.
  • the legs are composed of leg modules that are fastened end-to-end, e.g. with one or more intermediate leg modules that are selectively mountable in the structure of a leg in order to set the length of the leg to a desired length.
  • Each boom leg is embodied as a hollow box structure, preferably a latticed hollow box structure.
  • the hollow box structure has a cross section defined by an inner side face and by multiple further faces.
  • the inner side faces of the left-hand and right-hand boom legs are spaced from one another to form a clearance between the boom legs along the length of the main boom structure.
  • each leg is over at least a major portion of the length thereof, e.g. all of the length, embodied with a rectangular cross section defined by the inner side, an outer side, a top side, and a bottom side.
  • each leg is over a portion of the length thereof, e.g. a minor portion, embodied with a triangular cross section, defined by the inner side, a top face, and bottom face, said top face and bottom face adjoining one another at an outer apex that is remote from the inner side, e.g. forming a cross section corresponding to an equilateral triangle or an isosceles triangle.
  • the main boom structure comprises, distributed over the length thereof, multiple cross members interconnecting the left-hand and right-hand boom legs.
  • the legs are straight over their entire length, e.g. parallel to one another.
  • the two boom legs each have a distal section with a distal end remote from the proximal end portion.
  • the boom of the inventive crane further comprises an extensible boom structure.
  • This extensible boom structure is slidably mounted between the distal sections of the two boom legs of the main boom structure, so as to be movable between a retracted position and an extended position in the direction of the length of the main boom section.
  • the extensible boom structure is over at least a major portion of the length thereof, e.g. over at least 75% thereof, embodied as a hollow box structure, e.g. a rectangular cross section hollow box structure with a top face, a bottom face, and opposed side faces.
  • a hollow box structure e.g. a rectangular cross section hollow box structure with a top face, a bottom face, and opposed side faces.
  • the extensible boom structure is in majority embodied as a latticed hollow box structure.
  • the side faces of the extensible boom structure each extend adjacent an associated one of the inner side faces of the distal sections, these faces being parallel to one another and extending in longitudinal direction of the boom.
  • the inner side faces of the distal sections each have parallel upper and lower chords interconnected by lacing members in the plane of the inner side face
  • the side faces of the extensible boom structure each have parallel upper and lower chords interconnected by lacing members in the plane of the inner side face of the extensible boom structure, wherein bearing members are arranged between each pair of adjacent upper chords and each pair of adjacent lower chords to allow for sliding of the extensible boom structure and for transmission of loads between the extensible boom structure and the distal sections of the two legs of the main boom structure.
  • the extensible boom structure is extendable and retractable over a range of at least 10 meters relative to the main boom structure, e.g. over at least 20 meters, e.g. between 20 and 40 meters.
  • the distal sections are interconnected by at least one of the cross members, which at least one cross member is located in proximity of the distal ends. This at least one cross member between the distal sections is configured to allow for extending and retracting motions of the extensible boom section.
  • the extensible boom structure is provided with a boom head at a tip end of the extensible boom structure.
  • variable length luffing system extends from the luffing winch to the boom head. In an alternative embodiment, the variable length luffing system extends from the luffing winch to the distal sections, e.g. to the distal ends thereof.
  • the crane boom is further provided with a stay mechanism. This mechanism has, for each of the boom legs, a fixed length stay extending from an anchoring member on the boom leg arranged in proximity of the proximal end of the boom leg to a top end of a strut that extends from the distal section of the boom leg. A variable length stay extends from said top end of the strut to the boom head.
  • the main hoisting cable extends from the main winch to a main cable sheave assembly that is arranged on the boom head.
  • the boom head is, in an embodiment thereof, provided with an auxiliary jib member that is fixed on the boom head, and the crane is provided with an auxiliary hoisting system having an auxiliary hoisting winch, an auxiliary hoisting cable driven by said winch, and an auxiliary sheave assembly on the auxiliary jib member from which an auxiliary load connector, e.g. a crane hook, is suspended.
  • an auxiliary load connector e.g. a crane hook
  • the two boom legs each have a proximal section extending from the proximal end portion thereof and a central section adjoining the proximal section, the distal section of the boom leg adjoining the central section, wherein the proximal sections are parallel to one another, wherein the central sections converge towards one another in the direction towards the distal sections, and wherein a cross member interconnects the boom legs where the proximal section and central section adjoin, and wherein a cross member interconnects the boom legs where the central section and distal section adjoin.
  • an inner end of the extensible boom section in the retracted position thereof, is located in proximity of the cross member where the central section and distal section adjoin.
  • the distal sections are each embodied as a latticed hollow box structure, each have an inner side face with parallel upper and lower chords interconnected by lacing members in the plane of the inner side face, wherein the cross member in proximity of the distal ends comprises trusses that are arranged in a plane between the upper chords and trusses arranged in a plane between the lower chords.
  • the extensible boom structure is over at least a major portion of the length thereof, e.g. over at least 75% thereof, embodied as a hollow box structure having a rectangular cross section of a width of at least 6 meters and a height of at least 3 meters.
  • the superstructure is provided with a gantry thereon, on which a luffing cable sheave assembly is mounted, the luffing cable sheave assembly guiding a luffing cable extending from the luffing winch to the boom head.
  • the luffing system comprises:
  • the crane comprises an extension mechanism comprising an extension winch, a winch driven extension cable, and an extension cable sheave system with multiple sheaves.
  • the extension mechanism is configured to engage on the extensible boom structure so as to provide an extension motion thereof, preferably retraction of the extensible boom structure being caused by the mass of the extensible boom structure whilst the boom is upwardly oriented.
  • retraction is done by a winch or some other drive.
  • extension and/or retraction is done by a rack-and-pinion mechanism.
  • the crane comprises a locking mechanism configured to lock the extensible boom mechanically to the distal sections in at least the retracted and extended position thereof.
  • the locking mechanism comprises one or more actuated locking pins or the like.
  • the invention also relates to an offshore vessel comprising a crane as described herein.
  • the invention also relates to a jack-up type offshore vessel comprising:
  • the crane is an around-the-leg crane, wherein a jack-up leg of the vessel extends through the revolving superstructure and the slew bearing extends about the jack-up leg.
  • the crane is configured for an over-the-leg parking position, wherein the two boom legs are located on opposite sides of a jack-up leg in the parking position, e.g. the vessel having a boom rest on which the boom is parked in a substantially horizontal orientation.
  • the crane is an around-the-leg crane, wherein a jack-up leg of the vessel extends through the revolving superstructure and the slew bearing extends about the jack-up leg, and wherein the crane is configured for an over-the-leg parking position, wherein the two boom legs are located on opposite sides of a jack-up leg in the parking position, e.g. the vessel having a boom rest on which the boom is parked in a substantially horizontal orientation.
  • the vessel has two aft jack-up legs and two front jack-up legs, wherein a rear jack-up leg extends through the revolving superstructure and the slew bearing extends about said jack-up leg, and wherein the crane is configured for an over-the-leg parking position, wherein the two boom legs are located on opposite sides of a front jack-up leg in the parking position, e.g. wherein a cross member arranged at the join of the proximal section and central section of each boom leg is located at a rear side of the front jack-up leg when in the parking position.
  • a second aspect of the invention relates to a jack-up type offshore vessel comprising:
  • the crane of the vessel of the second aspect of the invention is provided with one or more of the technical features discussed herein with reference to the offshore vessel crane of the first aspect of the invention, e.g. as described in the appended claims.
  • the crane is configured for an over-the-leg parking position, wherein the two boom legs are located on opposite sides of a jack-up leg in the parking position, e.g. the vessel having a boom rest on which the boom is parked in a substantially horizontal orientation.
  • the crane is an around-the-leg crane, wherein a jack-up leg of the vessel extends through the revolving superstructure and the slew bearing extends about the jack-up leg.
  • the crane is an around-the-leg crane, wherein a jack-up leg of the vessel extends through the revolving superstructure and the slew bearing extends about the jack-up leg, and wherein the crane is configured for an over-the-leg parking position, wherein the two boom legs are located on opposite sides of a jack-up leg in the parking position, e.g. the vessel having a boom rest on which the boom is parked in a substantially horizontal orientation.
  • the vessel has two aft jack-up legs and two front jack-up legs, wherein a rear jack-up leg extends through the revolving superstructure and the slew bearing extends about said jack-up leg, and wherein the crane is configured for an over-the-leg parking position, wherein the two boom legs are located on opposite sides of a front jack-up leg in the parking position, e.g. wherein a cross member arranged at the join of the proximal section and central section of each boom leg is located at a rear side of the front jack-up leg when in the parking position.
  • the invention also relates to a method for hoisting an offshore wind turbine component, e.g. for installation and/or maintenance of an offshore wind turbine, wherein use is made of a crane and/or an offshore vessel as described herein.
  • the vessel 1 comprises:
  • the vessel 1 is provided with a crane 10 for handling of offshore wind turbine components.
  • a crane 10 for handling of offshore wind turbine components.
  • a discussed the crane 10 can also be used for other purposes, and be installed on a different type of vessel, e.g. a semi-submersible crane vessel, etc.
  • the crane 10 comprises:
  • the boom 20 will be discussed in more detail below.
  • the crane 10 is an around-the-leg crane. It is shown, that an aft jack-up 4 leg extends through the revolving superstructure 12 and that the slew bearing extends about this jack-up leg.
  • the crane 10, in particular the boom 20, is configured for an over-the-leg parking position, wherein the two boom legs are located on opposite sides of a front jack-up leg 5 in the parking position.
  • the boom 20 is the supported on a boom rest 80 of the vessel.
  • the boom has a main boom structure 21 having a left-hand boom leg 22 and a right-hand boom leg 23.
  • Each of the two boom legs 22, 23 has a proximal end portion that is pivotally connected to the left-hand connector 13a and to the right-hand hand connector 13b, respectively.
  • Each boom leg 22, 23 has a length of at least 60 meters, e.g. between 80 and 140 meters, here about 120 meters.
  • Each boom leg 22, 23 is embodied as a hollow box structure, here a latticed hollow box structure.
  • Each leg 22, 23 has a cross section defined by an inner side face and multiple further faces.
  • the inner side faces of the left-hand boom leg 22 and the right-hand boom leg 23 are spaced from one another to form a clearance between the boom legs 22, 23 along the length of the main boom structure 21.
  • the main boom structure 21 comprises, distributed over the length thereof, multiple cross members 24, 25, 26, 27 interconnecting the left-hand and right-hand boom legs 22, 23.
  • the two boom legs 22, 23 each have a proximal section 22a, 23a extending from the proximal end portion thereof and a central section 22b, 23b adjoining the proximal section, as well as a distal section 22c, 23c adjoining the central section.
  • Each of the boom legs has a distal section 22c, 23c with a distal end 22d, 23d that is remote from the proximal end portion of the boom leg.
  • proximal sections 22a, 23a are parallel to one another.
  • the central sections 22b, 2b converge towards one another in the direction towards the distal sections 22c, 23c.
  • the cross member 24 interconnects the boom legs in proximity of the proximal ends.
  • the cross member 25 interconnects the boom legs where the proximal section 22a, 23a and central section 22b, 23b adjoin.
  • the cross member 26 interconnects the boom legs where the central section 22b, 23b and distal section 22c, 23c adjoin.
  • the boom 20 further has one extensible boom structure 30.
  • This extensible boom structure 30 is slidably mounted between the distal sections 22c, 23c of the boom legs of the main boom structure 21, so as to be movable between a retracted position and an extended position in the direction of the length of the main boom section. This is best shown in figures 4a,b and 5a,b .
  • the extensible boom structure 30 is over at least a major portion of the length thereof, e.g. over at least 75% thereof, embodied as a hollow box structure, see also figure 6 .
  • the boom structure 30 has a rectangular cross section hollow box structure, here, as preferred, a latticed hollow box structure, with a top face 31, a bottom face 32, and opposed side faces 33, 34.
  • the side faces 33, 34 of the extensible boom structure each extend adjacent a corresponding inner side face of one of the two distal sections. These pairs of side faces are parallel to one another and extend in the longitudinal direction of the boom.
  • the extensible boom structure 30 is extendable and retractable over a range of at least 10 meters relative to the main boom structure, e.g. over at least 20 meters, e.g. between 20 and 40 meters, here over about 30 meters.
  • Figure 6 shows that the distal sections 22c, 23c are interconnected by the cross members 26, 27, of which member 27 is located in proximity of the distal ends 22d, 23d.
  • These cross members in the distal region of the boom 20 are configured to allow for extending and retracting motions of the extensible boom section 30.
  • the extensible boom structure 30 is provided with a boom head 35 at a tip end of the extensible boom structure.
  • this boom head 35 can be embodied as a welded structure of steel plates with reinforcements, etc.
  • variable length luffing system extends from the luffing winch to the boom head 35 on the extensible boom structure 30.
  • main hoisting cable 51 extends from the main winch 50 to a main cable sheave assembly 52 on the boom head 35.
  • An main load connector e.g. a main crane hook 53, is suspended by means of cable 51 from the sheave assembly 52 on the boom head.
  • multiple main hoisting winches, cables, and main load connectors e.g. two main hoisting systems or possible three main hoisting systems, can be provided.
  • the one or more main cables 51 extend longitudinally through the extensible boom structure 30.
  • the cross member 26 that is arranged at the join of the proximal section and central section of each boom leg is located at a rear side of the front jack-up leg 5 when in the parking position.
  • an inner end of the extensible boom structure 30 is located in proximity of the cross member 26 where the proximal section and central section adjoin.
  • the distal sections 22c, 23c are each embodied as a latticed hollow box structure, each have an inner side face with parallel upper and lower chords interconnected by lacing members in the plane of the inner side face.
  • the cross members 26 and 27, at least cross member 27 that is located in proximity of the distal ends comprises trusses 27a that are arranged in a plane between the upper chords and trusses 27b arranged in a plane between the lower chords.
  • the extensible boom structure 30 is over at least a major portion of the length thereof, e.g. over at least 75% thereof, embodied as a hollow box structure having a rectangular cross section of a width of at least 6 meters and a height of at least 3 meters.
  • the superstructure 12 is provided with a gantry 14a thereon, on which a luffing cable sheave assembly 15 is mounted, guiding a luffing cable 41 extending from the luffing winch 40 to the boom head 35.
  • the luffing system comprises:
  • the crane 10 comprises an extension mechanism comprising an extension winch 60, a winch driven extension cable 61, and an extension cable sheave system with multiple sheaves 62, 63.
  • the extension mechanism is configured to engage on the extensible boom structure 30 so as to provide an extension motion thereof.
  • retraction of the extensible boom structure is caused by the mass of the extensible boom structure whilst the boom is upwardly oriented, so that the structure 30 sinks under its mass between the distal sections of the main structure 21.
  • the crane comprises a locking mechanism configured to lock the extensible boom mechanically to the distal sections in at least the retracted and extended position thereof.
  • the vessel and crane are very suitable for the hoisting of an offshore wind turbine component, e.g. for installation and/or maintenance of an offshore wind turbine.
  • Figures 7 and 8 show the jack-up type offshore vessel provided with another example of a crane according to the invention.
  • the extensible boom structure is retracted and in figure 8 extended.
  • a main difference with the crane described with reference to figures 1 - 6 lies in the design of the luffing system. Whilst the crane of figures 7 , 8 still has two luffing winches 40 on the superstructure and two spaced apart luffing cables 41, each driven by a respective luffing winch, these luffing cables now do not extend to the boom head 35. Instead, these luffing cables extend to respective luffing cable connectors 42 on the distal sections 22c, 23c of the boom legs, here at the very distal end thereof.
  • a further difference is the provision of a stay mechanism 70, having, for each of the two boom legs 22, 23, a fixed length stay 71 extending from an anchoring member 72 on the boom leg arranged in proximity of the proximal end of the boom leg to a top end of a strut 73 that extends upward from the distal section of the boom leg.
  • the mechanism 70 further has a variable length stay 74, that extends from the top end of the strut 73 to the boom head 35 on the extensible structure 30.
  • the variable length stay 74 allows for extension and retraction of the extensible boom structure.
  • the variable length stay comprises two stay cable arrangements, in the same plane as the corresponding fixed length stay.
  • each variable length stay comprises a stay cable, a system of sheaves, and a stay cable winch to vary the effective length of the stay between the end of the strut and the boom head.

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Claims (18)

  1. Grue de navire de haute mer (10) configurée pour être montée sur un navire de haute mer (1), par exemple destinée à être utilisée pour manipuler un ou plusieurs composants d'éolienne de haute mer, par exemple pour l'installation et/ou l'entretien d'une éolienne de haute mer, la grue comprenant :
    une structure de base (11) adaptée pour être montée sur le navire, par exemple pour la fixation à la coque du navire ;
    une superstructure rotative (12) pouvant pivoter sur un palier pivotant autour d'un axe de pivotement par rapport à la structure de base, la superstructure étant prévue avec :
    un élément de raccordement de flèche comprenant un connecteur gauche (13a) et un connecteur droit (13b) à une distance l'un de l'autre, définissant ensemble un axe de pivot de flèche horizontal (14) ;
    une flèche (20) ayant un axe longitudinal, dans laquelle la flèche a une extrémité interne raccordée au connecteur gauche et au connecteur droit de l'élément de raccordement de flèche, de sorte que la flèche peut pivoter vers le haut et vers le bas autour de l'axe de pivot de flèche (14) qui est perpendiculaire à l'axe longitudinal d'une flèche ;
    un dispositif de relevage pour faire pivoter la flèche vers le haut et vers le bas, comprenant un treuil de relevage (40) et un système de relevage à longueur variable (41) ;
    un système de levage principal pour lever une charge, comprenant un treuil principal (50) et un câble de levage principal (51) associé ;
    dans laquelle la flèche a une structure de flèche principale ayant un pied de flèche gauche (22) et un pied de flèche droit (23), chacun desdits pieds de flèche ayant une partie d'extrémité proximale respectivement raccordée, de manière pivotante, au connecteur gauche (13a) et au connecteur droit (13b),
    dans laquelle chaque pied de flèche (22, 23) a une longueur d'au moins 60 mètres, par exemple entre 80 et 140 mètres,
    dans laquelle chaque pied de flèche est mis en oeuvre sous la forme d'une structure de boîte creuse, de préférence une structure de boîte creuse en treillis, ayant une section transversale définie par une face latérale interne et plusieurs autres faces, dans laquelle les faces latérales internes des pieds de flèche gauche et droit (22, 23) sont espacées les unes des autres afin de former un jeu entre les pieds de flèche le long de la longueur de la structure de flèche principale,
    dans laquelle la structure de flèche principale (21) comprend, réparties sur sa longueur, plusieurs traverses (24, 25, 26, 27) interconnectant les pieds de flèche gauche et droit (22, 23),
    dans laquelle les pieds de flèche (22, 23) ont chacun une section distale (22c, 23c) avec une extrémité distale (22d, 23d) à distance de la partie d'extrémité proximale,
    caractérisée en ce que la flèche comprend en outre une structure de flèche extensible (30), ladite structure de flèche extensible étant montée, de manière coulissante, entre les sections distales (22c, 23c) des pieds de flèche (22, 23) de la structure de flèche principale (21), afin d'être mobile entre une position rétractée et une position étendue dans la direction de la longueur de la section de flèche principale,
    dans laquelle la structure de flèche extensible (30) est sur au moins une partie majeure de sa longueur, par exemple sur au moins 75%, mise en oeuvre sous la forme d'une structure de boîte creuse, par exemple, une structure de boîte creuse à section transversale rectangulaire, de préférence une structure de boîte creuse en treillis, avec une face supérieure (31), une face inférieure (32) et des faces latérales (33, 34) opposées, lesdites faces latérales (33, 34) de la structure de flèche extensible s'étendant de manière adjacente aux faces latérales internes des sections distales (22c, 23c), lesquelles faces latérales sont parallèles entre elles et s'étendent dans la direction longitudinale de la flèche,
    dans laquelle la structure de flèche extensible (30) est extensible et rétractable (60, 61, 62, 63) sur une plage d'au moins 10 mètres par rapport à la structure de flèche principale (21), par exemple sur au moins 20 mètres, par exemple entre 20 et 40 mètres,
    dans laquelle les sections distales (22c, 23c) sont interconnectées par au moins l'une desdites traverses (27) qui est positionnée à proximité des extrémités distales, ladite au moins une traverse (27) étant configurée pour permettre lesdits mouvements d'extension et de rétraction de la structure de flèche extensible (30),
    dans laquelle la structure de flèche extensible (30) est prévue avec une tête de flèche (35) au niveau d'une extrémité de pointe de la structure de flèche extensible ;
    dans laquelle le câble de levage principal (51) s'étend du treuil principal (50) à un ensemble de poulie de câble principal (52) sur la tête de flèche (35).
  2. Grue de navire de haute mer selon la revendication 1, dans laquelle les deux pieds de flèche (22, 23) ont chacun une section proximale (22a, 23a) s'étendant à partir de sa partie d'extrémité proximale et une section centrale (22b, 23b) attenante à la section proximale, la section distale (22c, 23c) du pied de flèche étant attenante à la section centrale, dans laquelle les sections proximales (22a, 23a) sont parallèles entre elles, dans laquelle les sections centrales (22b, 23b) convergent les unes vers les autres dans la direction vers les sections distales, et dans laquelle une traverse (25) interconnecte les pieds de flèche où la section proximale et la section centrale sont attenantes, et dans laquelle une traverse (26) interconnecte les pieds de flèche où la section centrale et la section distale sont attenantes.
  3. Grue de navire de haute mer selon la revendication 2, dans laquelle dans sa position rétractée, une extrémité interne de la structure de flèche extensible (30) est positionnée à proximité de la traverse (26) où la section centrale et la section distale sont attenantes.
  4. Grue de navire de haute mer selon l'une quelconque ou plusieurs des revendications 1 à 3, dans laquelle les section distales (22c, 23c) sont chacune mises en oeuvre sous la forme d'une structure de boîte creuse en treillis, ont chacune une face latérale interne avec des cordes supérieure et inférieure parallèles interconnectées par des éléments de laçage dans le plan de la face latérale interne, dans laquelle la traverse, à proximité des extrémités distales, comprend des fermes qui sont agencées dans un plan entre les cordes supérieures et les fermes agencées dans un plan entre les cordes inférieures.
  5. Grue de navire de haute mer selon l'une quelconque ou plusieurs des revendications 1 à 4, dans laquelle la structure de flèche extensible (30) est sur au moins une partie majeure de sa longueur, par exemple sur au moins 75% de cette dernière, mise en oeuvre sous la forme d'une structure de boîte creuse ayant une section transversale rectangulaire d'une largeur d'au moins 6 mètres et une hauteur d'au moins 3 mètres.
  6. Grue de navire de haute mer selon l'une quelconque ou plusieurs des revendications 1 à 5, dans laquelle la superstructure (12) est prévue avec un portique (14a) sur cette dernière, sur laquelle un ensemble de poulie de câble de relevage (15) est monté, guidant un câble de relevage (41).
  7. Grue de navire de haute mer selon l'une quelconque des revendications 1 à 6, dans laquelle le système de relevage à longueur variable (41) s'étend à partir du treuil de relevage (40) jusqu'à la tête de flèche (35).
  8. Grue de navire de haute mer selon l'une quelconque ou plusieurs des revendications 1 à 6, dans laquelle le système de relevage à longueur variable (41) s'étend du treuil de relevage (40) aux sections distales, par exemple ses extrémités distales (22d, 23d), dans laquelle, de préférence, la flèche (20) est en outre prévue avec un mécanisme de hauban, ayant, pour chacun des pieds de flèche, un hauban à longueur fixe (71) s'étendant d'un élément d'ancrage (72) sur le pied de flèche (22, 23) agencé à proximité de l'extrémité proximale du pied de flèche jusqu'à une extrémité supérieure d'une entretoise (73) qui s'étend de la section distale (22c, 23c) du pied de flèche, et avec un hauban à longueur variable (74) qui s'étend de ladite extrémité supérieure de l'entretoise à la tête de flèche (35).
  9. Grue de navire de haute mer selon l'une quelconque ou plusieurs des revendications 1 à 8, dans laquelle le système de relevage comprend :
    deux treuils de relevage (40) sur la superstructure ; et
    deux câbles de relevage (41), chacun entraîné par un treuil de relevage respectif, lesdits câbles de relevage s'étendant éloignés l'un de l'autre, par exemple parallèles entre eux, des ensembles de poulie de câble de relevage (15) montés sur la superstructure, par exemple sur son portique (14a), aux connecteurs de câble de relevage (42) respectifs sur la tête de flèche ou sur les sections distales des pieds de flèche, lesquels connecteurs de câble de relevage (42) sont espacés les uns des autres dans une direction de largeur de la flèche, par exemple agencés sur les côtés opposés de la tête de flèche (35) observés dans la direction de largeur.
  10. Grue de navire de haute mer selon l'une quelconque ou plusieurs des revendications 1 à 9, dans laquelle la grue comprend un mécanisme d'extension pour la structure de flèche extensible comprenant un treuil d'extension (60), un câble d'extension entraîné par treuil (61), et un système de poulie de câble d'extension avec plusieurs poulies (62, 63), dans laquelle ledit mécanisme d'extension est configuré pour se mettre en prise sur la structure de flèche extensible (30) afin de fournir son mouvement d'extension, de préférence la rétraction de la structure de flèche extensible étant provoquée par la masse de la structure de flèche extensible alors que la flèche est orientée vers le haut.
  11. Grue de navire de haute mer selon l'une quelconque ou plusieurs des revendications 1 à 10, dans laquelle la grue (10) comprend un mécanisme de verrouillage configuré pour verrouiller la flèche extensible mécaniquement aux sections distales dans au moins ses positions rétractée et étendue.
  12. Navire de haute mer comprenant une grue de navire de haute mer (10) selon une ou plusieurs des revendications précédentes.
  13. Navire de haute mer de type autoélévateur (1) comprenant :
    une coque flottante (2) avec un pont principal (3),
    au moins trois pieds autoélévateurs (4, 5),
    une pluralité d'unités de levage (6), chacune associée avec un pied autoélévateur respectif, adaptée pour déplacer le pied autoélévateur respectif par rapport à la coque et pour amener le navire dans une position opérationnelle dans laquelle les pieds se mettent en prise dans les fonds marins et la coque est au-dessus du niveau de l'eau,
    une grue de navire de haute mer selon une ou plusieurs des revendications 1 à 11.
  14. Navire de haute mer de type autoélévateur selon la revendication 13, dans lequel la grue (10) est une grue montée sur un pied, dans lequel un pied autoélévateur du navire s'étend à travers la superstructure rotative et le palier pivotant s'étend autour du pied autoélévateur.
  15. Navire de haute mer de type autoélévateur selon la revendication 13 ou 14, dans lequel la grue (10) est configurée pour une position de stationnement sur le pied, dans laquelle les deux pieds de flèche sont positionnés sur les côtés opposés d'un pied autoélévateur dans la position de stationnement, par exemple le navire ayant un repose-flèche (80) sur lequel la flèche est stationnée dans une orientation sensiblement horizontale.
  16. Navire de haute mer de type autoélévateur selon la revendication 13, dans lequel la grue (10) est une grue montée sur un pied, dans lequel un pied autoélévateur du navire s'étend à travers la superstructure rotative () et le palier pivotant s'étend autour du pied autoélévateur, et dans lequel la grue est configurée pour une position de stationnement sur le pied, dans laquelle les deux pieds de flèche sont positionnés sur les côtés opposés d'un pied autoélévateur dans la position de stationnement, par exemple le navire ayant un repose-flèche sur lequel la flèche est stationnée dans une orientation sensiblement horizontale.
  17. Navire de haute mer de type autoélévateur selon la revendication 13, dans lequel le navire (1) a deux pieds autoélévateurs arrière et deux pieds autoélévateurs avant, dans lequel un pied autoélévateur arrière (4) s'étend à travers la superstructure rotative (12) et le palier pivotant s'étend autour dudit pied autoélévateur, et dans lequel la grue (10) est configurée pour une position de stationnement sur le pied, dans laquelle les deux pieds de flèche (22, 23) sont positionnés sur les côtés opposés d'un pied autoélévateur avant (5) dans la position de stationnement, par exemple, dans lequel une traverse (25) agencée à la jonction de la section proximale et de la section centrale de chaque pied de flèche est positionnée au niveau d'un côté arrière du pied autoélévateur avant lorsqu'il est dans la position de stationnement.
  18. Procédé pour lever un composant d'éolienne en haute mer, par exemple pour l'installation et/ou l'entretien d'une éolienne de haute mer, dans lequel on utilise une grue de navire de haute mer (10) et/ou un navire de haute mer (1) selon l'une quelconque ou plusieurs des revendications 1 à 17.
EP20833870.7A 2019-12-19 2020-12-18 Grue de navire de haute mer Active EP4077197B1 (fr)

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NL2024512A NL2024512B1 (en) 2019-12-19 2019-12-19 Offshore vessel crane
PCT/EP2020/087125 WO2021123236A1 (fr) 2019-12-19 2020-12-18 Grue de navire de haute mer

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CN116789004B (zh) * 2023-08-28 2023-10-27 兴化市远洋机械有限公司 一种用于船舶收缩式起重机

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CN110719886B (zh) * 2017-04-24 2022-02-08 伊特里克公司 用于在海上船上使用的运动补偿起重机
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