WO2019091669A1 - Pod for transporting people onto an oil platform - Google Patents

Pod for transporting people onto an oil platform Download PDF

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Publication number
WO2019091669A1
WO2019091669A1 PCT/EP2018/076931 EP2018076931W WO2019091669A1 WO 2019091669 A1 WO2019091669 A1 WO 2019091669A1 EP 2018076931 W EP2018076931 W EP 2018076931W WO 2019091669 A1 WO2019091669 A1 WO 2019091669A1
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WO
WIPO (PCT)
Prior art keywords
nacelle
central mast
arm
platform
arms
Prior art date
Application number
PCT/EP2018/076931
Other languages
French (fr)
Inventor
Yves De France
Gary BERTRAND
Eric LAMOTTE
Original Assignee
Escape International
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 Escape International filed Critical Escape International
Publication of WO2019091669A1 publication Critical patent/WO2019091669A1/en

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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
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/12—Slings comprising chains, wires, ropes, or bands; Nets
    • B66C1/127—Nets
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B1/00—Devices for lowering persons from buildings or the like
    • A62B1/02—Devices for lowering persons from buildings or the like by making use of rescue cages, bags, or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D1/00—Dropping, ejecting, releasing, or receiving articles, liquids, or the like, in flight
    • B64D1/22—Taking-up articles from earth's surface

Definitions

  • the present invention relates to the field of transporting people on a petroleum platform and is aimed more particularly at a nacelle for transporting operators.
  • the platform is supplied, in a classic way, by a barge which is a boat connecting the platform to the coast by the sea.
  • the barge also allows operators to be transported to or from the platform.
  • a structure comprising two torus-shaped buoys interconnected by ropes.
  • Each buoy is made of reinforced foam to float in the water in case of a fall and a floor is mounted inside the toric shape of the buoys to allow operators to stand on the floor while standing on the ropes. .
  • document US205023853A1 discloses an improved structure further comprising a rigid central pillar mounted between the two buoys in order to keep them apart.
  • a rigid central pillar mounted between the two buoys in order to keep them apart.
  • Such a structure being more rigid, its bulk is greater, especially during storage. This presents a significant disadvantage as the space available on an oil platform is valuable.
  • a rigid structure in which the operators are sitting, hooked to the crane.
  • Such a structure is adapted to float in water. However, it has an even larger footprint and a significant wind resistance that can cause movements of the structure during its movement.
  • the operators being seated it is not possible for them to get out of the structure quickly, nor to cushion the vertical shocks.
  • a military helicopter nacelle In another technical field, there is a military helicopter nacelle.
  • Such nacelle includes articulated arms mounted on a mast, in the manner of an umbrella, to form a support base during the transport of people and which can be folded in the storage position to limit the size of the nacelle .
  • a nacelle is not suitable for transport between a barge and an oil platform. Indeed, a helicopter nacelle can move people over long distances. Also, people are sitting on the basket and attached using a harness. However, as described above, in the case of the oil rig, people must be able to quickly evacuate the platform and cushion vertical shocks.
  • a military nacelle also has an opening system attached to the upper end of the mast.
  • the invention relates to a nacelle for transporting people, in particular between a barge and a petroleum platform, comprising a central mast extending axially between a foot and a lifting head adapted to be connected to a sling in order to move the nacelle, and a plurality of arms extending between a fixing end and a free end, the fixing end of each arm being hingedly mounted on the central mast at its foot between a storage position in which each arm extends substantially parallel to the central mast, and a use position in which each arm extends substantially orthogonal to the central mast so as to form a support base on which people can ride in a standing position, the central mast further comprising, at the level of its head, at least one peripheral gripping member adapted to allow persons to grip rs of displacement.
  • a person can easily be moved between an oil platform and a barge while climbing on the platform connected to a crane.
  • a movement is secured through the use of a support base on which a person is standing and a peripheral grip member to which several people can stand simultaneously.
  • a grip is also ergonomic indeed, the person can cushion the vertical shocks with his legs because of his standing position, and the fact that it grips the basket by hand allows it to stabilize during the displacement.
  • the nacelle has a limited space in storage position thanks to the arms that fold along the central mast while being able to be manipulated because of its gripping member.
  • the peripheral gripping member defines a plurality of elementary handles so that each person who rides on the basket can grasp one of the elementary handles, thus allowing several people to grasp the peripheral grip member at the same time.
  • the distance between the peripheral gripping member and the connecting end of the arms is greater than the length of an arm so that, in the storage position, the arms do not cover the peripheral gripping member. and thus leave free access to the peripheral gripping member so that an operator can grasp it to move the nacelle.
  • the nacelle comprises at least one thread mounted between the plurality of arms to form the support base with the arms.
  • a net mounted between the arms thus forms a large surface allowing several people to climb on the support base at the same time.
  • each arm is connected to the head of the central mast by at least one cable configured to maintain the orthogonal arm to the central mast in the use position.
  • the resistance of the arms in the use position is increased, which allows them to lift the weight of several people.
  • the nacelle comprises a flotation device adapted to allow the nacelle to float in the water, preferably mounted around the central mast to keep people safe on the nacelle when the latter falls. at the water.
  • the flotation member extends peripherally around the central mast and has a plurality of radial impressions adapted to allow folding of the arms in the storage position to limit the size of the nacelle.
  • the central mast comprises a securing member adapted to allow the securing of a harness, the securing member being placed under the peripheral gripping member.
  • a person climbing on the basket can be attached to the basket to reduce the risk that the person falls from the basket.
  • such placement of the securing member under the peripheral gripping member allows a person to easily access it so that it can attach and detach quickly, allowing a quick evacuation, if not urgent, of the nacelle.
  • the invention also relates to an assembly of a nacelle as described above and a sling connected to the head of the nacelle, sling comprising a longitudinal cable and elastic means connecting two portions of said longitudinal cable in order to damp the vertical movements. of the nacelle, particularly when it is placed on the deck of a barge.
  • the invention further relates to a method of using a nacelle as described above for the transport of persons between a barge and a petroleum platform thus making it possible to transport people in an easy and secure manner.
  • a method makes it possible to transport people, equipment, or both at the same time (especially in the case of a stretcher).
  • FIG. 1 is a schematic view of an embodiment of a nacelle according to the invention in the position of use
  • FIG. 2 is a schematic view of the nacelle of FIG. 1 in storage position
  • Figure 3 is a schematic perspective view of the nacelle during the deployment of the arms.
  • An oil platform is a platform for offshore oil exploration, drilling and exploitation, ie in the sea, in order to explore, drill or exploit an underwater hydrocarbon deposit.
  • An oil platform is also referred to as an offshore platform for offshore in English.
  • Such an oil platform is a structure, usually metallic, that can rest on the seabed or float on the surface of the water.
  • the platform thus includes a portion immersed in the water to allow the platform to rest on the seabed or to float, and a submerged portion located above the water level. Operators of the platform work on the submerged part to perform their tasks. Since the platform is located at a distance from the coast, a transport boat, also known as a barge, is generally used to transport equipment and operators to and / or from the platform.
  • the platform includes a crane to move equipment and operators, especially between the platform and a barge. Indeed, when the barge is close to the platform, the crane can move the operators from the water surface where the barge is located to the submerged part of the platform that extends above the surface of the boat. the water.
  • the difference in height between the barge and the platform can reach several tens of meters and varies over time. This variation of the vertical height of the barge must be taken into account during displacement operations.
  • the nacelle 1 comprises a central mast 10 adapted to be connected to a sling E, and a plurality of arms 2 movably mounted on the central mast 10 between a storage position (FIG. 2) and a position of use ( Figure 1).
  • the central mast 10 comprises a body extending longitudinally along the vertical axis Z between a lower end and an upper end, respectively designated "foot 1 1" and "head 12" in the remainder of the description.
  • the central mast 10 is made of metal or composite material so as to have a high mechanical strength. Preferably, its length is between 1, 4 m and 2 m in order to offer optimum comfort to operators while limiting its size.
  • the central mast 10 comprises a connecting member 13 of the nacelle 1 to a crane.
  • the connecting member 13 is located at the head 12 of the central mast 10, that is to say, at its upper end.
  • the nacelle 1 is thus suspended from the crane, which keeps the central mast 10 vertical under the effect of gravity.
  • the connecting member 13 is connected to sling E which connects the nacelle 1 to the crane.
  • the connecting member 13 is in the form of a loop or a hook of secling E.
  • each arm 2 is movably mounted to the central mast 10 to form, in the use position, a support base on which operators can mount.
  • Each arm 2 comprises a body extending longitudinally between a connecting end 21 and a free end 22.
  • each connecting end 21 of an arm 2 is connected to the foot 1 1 of the central mast. 10 by an articulation mechanism 23 about an axis of articulation which is orthogonal to the axis along which the central mast 10 extends.
  • each arm 2 is made of metal or composite material so as to have high mechanical strength.
  • the length of an arm 2 is less than the length of the mast 10 and, preferably, between 1 m and 1.9 m in order to allow its storage with the central mast 10.
  • the hinge mechanism 23 is in the form of a hinge allowing rotation of the arm 2 relative to the central mast 10.
  • the arms 2 are movable relative to the central mast 10 to deploy radially like an umbrella.
  • each arm 2 in the position of use of the nacelle 1, each arm 2 extends orthogonally to the central mast 10, that is to say horizontally so as to form a support base at the level of the foot 1 10.
  • the arms 2 extend radially to the central mast 10 to form a support base of large dimensions.
  • the free end 22 of each arm 2 is folded towards the head 12 of the central mast 10.
  • each arm 2 is tilted upwards in the storage position as shown in FIG. storage nacelle 1, each of the arms 2 extends vertically, in other words substantially parallel to the central mast 10 to limit the size of the nacelle 1.
  • the nacelle 1 in order to form a support base whose surface is continuous, the nacelle 1 comprises a net (not shown) mounted between the arms 2.
  • the net thus makes it possible to form a support surface between the arms 2 in order to increase the size of the support base and, consequently, the number of operators that can mount on the support base.
  • Such a net also increases stability by providing more room for operators to place their feet.
  • the net has a triangle shape and is secured to each arm 2.
  • Such a net is a flexible structure that can be folded during the tilting of the arms 2 in the storage position. This thus makes it possible to limit the size of the nacelle 1 in the storage position.
  • a net has a limited mass, which makes it easy to handle the platform 1 in the storage position.
  • the net is made of a material with little or no porosity, in order to limit the absorption of water during the use of the nacelle 1 at sea as will be described later. Finally, the use of a net makes it possible to limit the catch in the wind of the pod 1.
  • the nacelle 1 further comprises a plurality of cables 31, 32 for connecting each arm 2 to the central mast 10.
  • the nacelle 1 comprises a plurality of first cables 31, connecting the head 12 of the central mast 10 to the free end 22 of each arm 2, and a plurality of second cables 32, connecting the head 12 of the central mast 10 at a central portion of each arm 2, said central portion being located between the connecting end 21 and the free end 22 of each arm 2.
  • the cables 31, 32 are stretched so as to lock the arms 2 in a horizontal plane. This thus makes it possible to maintain the horizontal arms 2 when operators are mounting on the support base.
  • the use of two types of cables 31, 32 makes it possible to optimize the strength of the support base, but it goes without saying that the platform 1 could comprise only one type of cable or more than two types.
  • the cables 31, 32 are flexible so as to be folded during the tilting of the arms 2 in the storage position. This makes it possible to limit the size of the nacelle 1 in the storage position.
  • the cables 31, 32 have, for optimum strength, a limited mass, which makes it easy to manipulate the platform 1 in the storage position.
  • the cables 31, 32 serve to fulfill a guardrail function limiting the movement of an operator on the support base to a sector of the support base.
  • the central mast 10 comprises, at its head 12, at least one peripheral gripping member 14 adapted to allow people to grip during movement.
  • the peripheral gripping member 14 allows operators who climb on the pod 1 to hold hands. Indeed, as the operators are standing on the support base, they can stabilize their position and keep their balance by holding the peripheral gripping member 14.
  • the peripheral gripping member 14 is located at the head 12 of the central mast 10, in particular, under the connecting member 13 so that the operators are not in contact with the sling E.
  • the peripheral gripping member 14 is extends at a distance greater than 10 cm from the connecting end 21 of the arms 2 so that the free end 22 of the arms 2 extends under the peripheral gripping member 14 in the storage position as shown in Figure 2.
  • an operator can enter the peripheral gripping member 14 to move the nacelle 1 in the storage position.
  • Such a peripheral gripping member 14 thus has a dual function of stabilizing the operators in the position of use and gripping of the nacelle 1 in the storage position.
  • the peripheral gripping member 14 is in the form of a circle, whose diameter is greater than 50 cm, which is connected to the central mast 10 by radial segments.
  • Such an embodiment makes it possible to define a plurality of elementary handles for the operators.
  • the platform 1 comprises a securing member 15 to enable the operators to attach their harness H.
  • a securing member 15 extends peripherally around the central mast 10 and has a plurality of loops to which an operator can attach a carabiner or the like.
  • the securing member 15 is located under the peripheral gripping member 14 to facilitate the operations of attachment and manual unhooking of the harness H, located at the operator's hips, to the securing member 15. As the securing member 15 is located at the height of the hands of the operator, this allows a quick release in case of emergency evacuation of the platform 1 while allowing it to be maintained at the peripheral gripping member 14.
  • the securing member 15 extends up to the free end 22 of the arms 2 in the storage position in order to form a stop when the arms 2 are folded as illustrated in FIG. the diameter of the securing member 15 is determined so that the arms 2 extend substantially parallel to the central mast 10.
  • the nacelle 1 also comprises a buoyancy member 7 configured to float the nacelle 1 on the surface of the water in the case where the nacelle 1 is no longer connected to the crane.
  • a flotation member 7 is mounted around the central mast 10, preferably between the head 12 and the foot 1 1 in order to maintain the central mast 10 vertically and allow the operators to stand on the support base.
  • the flotation member 7 is made of a material having a density less than the density of the water in order to float.
  • the flotation member 7 extends peripherally around the central mast 10 and has a plurality of radial impressions 71 adapted to allow the folding of the arms 2.
  • flotation member 7 comprises a plurality of radial lobes 72 distributed around the periphery of the central mast 10.
  • the flotation member 7 has a certain flexibility, which makes it possible to absorb any lateral impact of the operators against the central mast 10.
  • the nacelle 1 also comprises shock absorbing members 8 to avoid clashes against the barge or the platform.
  • a shock absorbing member 8 is located at the foot 1 1 of the central mast 10 when the nacelle 1 is placed.
  • a shock absorbing member 8 is also provided at the free end 22 of each arm 2 to absorb lateral shocks of the nacelle 1, for example against the vertical walls of the barge or the platform.
  • shocks from the shake of the pod 1 are absorbed, which limits the risk of falling operators.
  • the nacelle 1 is connected to the crane by a sling E.
  • the sling E is in the form of a cable extending longitudinally and one end of which can be connected to the crane while the other end can be connected to the nacelle 1.
  • a hook may be mounted at at least one of these ends to facilitate the attachment and detachment operations of the sling E to the crane and / or the nacelle 1.
  • the sling E comprises a vertical catch-up system making it possible to catch the slack between the crane and the nacelle 1.
  • a vertical catch-up system is in the form of an elastic cable El connecting two portions of the sling E.
  • the elastic cable El thus makes it possible to form a lining of a portion of the sling E.
  • the elastic cable El has a length less than this part of the sling E so that, when the sling E is stretched, the elastic cable El stretches and when the sling E is not stretched, the elastic cable El contracts , thus ensuring a tension in the sling E between the two portions that connects the elastic cable El.
  • the nacelle 1 is stored in storage position in the oil platform to reduce its size.
  • an operator can enter the nacelle 1 by the peripheral gripping member 14 in order to place it at a location accessible to sling E connected to the crane of the oil platform.
  • the operator deploys the arms 2 so that they deploy in the use position.
  • the arms 2 are then lowered until the cables 31, 32 are stretched.
  • the net is also stretched to form, with the arms 2, the support base.
  • the nacelle 1 is then connected to the crane with the help of sling E which is connected to the connecting member 13.
  • the operators then stand upright on the support base, hook their harness H to the securing member 15 and grip the peripheral gripping member 14 to stabilize.
  • the crane is then actuated to lift the platform 1 and move the operators to the barge where they can quickly evacuate the platform 1 by unhooking their harness H. During the displacement, the shocks are minimized, which limits the risk of fall.
  • the platform 1 can float on the surface of the water thanks to the flotation device 7, which gives the rescuers time to intervene.
  • the nacelle 1 After the transport of the operators, the nacelle 1 is detached from the sling E and the arms 2 are tilted to the storage position and locked.
  • a nacelle was presented for the transport of people on a petroleum platform, but it goes without saying that the invention applies in other fields, in particular, the military field, construction, civil engineering, mining, etc.

Abstract

A pod (1) for transporting people between a barge and an oil platform, comprising a central pole (10) and a plurality of arms (2), one end (21) of each arm (2) being mounted in an articulated manner on the central pole (10) between a storage position in which each arm (2) extends substantially parallel to the central pole (10), and a use position in which each arm (2) extends substantially orthogonal to the central pole (10) so as to form a support base onto which people can climb in a standing position, the central pole (10) further comprising, at the head (12) of same, a peripheral gripping member (14) suitable for being gripped by the people during the journey.

Description

NACELLE POUR LE TRANSPORT DE PERSONNES SUR UNE PLATEFORME PETROLIERE  NACELLE FOR THE TRANSPORT OF PEOPLE ON A PETROLEUM PLATFORM
DOMAINE TECHNIQUE GENERAL ET ART ANTERIEUR La présente invention concerne le domaine du transport de personnes sur une plateforme pétrolière et vise, plus particulièrement, une nacelle pour le transport d'opérateurs. GENERAL TECHNICAL FIELD AND PRIOR ART The present invention relates to the field of transporting people on a petroleum platform and is aimed more particularly at a nacelle for transporting operators.
Aujourd'hui, des plateformes pétrolières, également désignées plateformes « offshore » en langue anglaise, sont installées au large des côtes pour explorer, forer et exploiter des gisements sous- marins d'hydrocarbure. De telles plateformes reposent sur des piliers fixés sur les fonds marins, dans le cas d'une plateforme fixe, ou bien sur des flotteurs, dans le cas d'une plateforme flottante. Today, oil platforms, also known as offshore platforms in English, are set up offshore to explore, drill and exploit submarine hydrocarbon deposits. Such platforms are based on pillars fixed on the seabed, in the case of a fixed platform, or on floats, in the case of a floating platform.
La plateforme est ravitaillée, de manière classique, par une barge qui est un bateau reliant la plateforme à la côte par la mer. La barge permet également de transporter des opérateurs vers ou depuis la plateforme. The platform is supplied, in a classic way, by a barge which is a boat connecting the platform to the coast by the sea. The barge also allows operators to be transported to or from the platform.
Afin de faciliter le chargement et le déchargement d'opérateurs de la barge, il est connu d'utiliser une grue montée sur la plateforme. Pour ce faire, une structure dans laquelle montent les opérateurs est accrochée par une élingue à la grue qui déplace alors la structure entre la barge et la plateforme. Du fait des remous des vagues et des rafales de vent, l'utilisation d'une telle structure nécessite que les opérateurs montent debout dans la structure afin d'amortir les chocs éventuels et être aptes à s'extraire rapidement hors de la structure en cas de besoin. In order to facilitate the loading and unloading of barge operators, it is known to use a crane mounted on the platform. To do this, a structure in which the operators are mounted is hooked by a sling to the crane which then moves the structure between the barge and the platform. Due to waves and gusts of wind, the use of such a structure requires the operators to stand up in the structure in order to dampen any shocks and be able to extract themselves quickly out of the structure in case of need.
On connaît notamment une structure comprenant deux bouées en forme de tore, reliées entre elles par des cordes. Chaque bouée est réalisée en mousse renforcée afin de flotter dans l'eau en cas de chute et un plancher est monté à l'intérieur de la forme torique des bouées afin de permettre aux opérateurs de se tenir debout sur ce plancher en se tenant aux cordes.In particular, a structure is known comprising two torus-shaped buoys interconnected by ropes. Each buoy is made of reinforced foam to float in the water in case of a fall and a floor is mounted inside the toric shape of the buoys to allow operators to stand on the floor while standing on the ropes. .
Cependant, une telle solution présente des inconvénients. En effet, les deux bouées étant reliées par des cordes, la distance entre les bouées peut varier si la tension dans élingue soulevant une telle structure varie. En particulier, lors d'une secousse, si la tension de rélingue diminue, les bouées se rapprochent l'une de l'autre alors que les opérateurs se trouvent entre les bouées, ce qui représente un inconvénient majeur. However, such a solution has disadvantages. Indeed, the two buoys being connected by ropes, the distance between the buoys may vary if the tension in sling lifting such a structure varies. In particular, during a jolt, if the tightening tension decreases, the buoys are close to one another while the operators are between the buoys, which represents a major drawback.
Afin de résoudre certains de ces problèmes, on connaît par le document US205023853A1 , une structure améliorée comprenant en outre un pilier central rigide monté entre les deux bouées afin de les maintenir écartées. Cependant, une telle structure étant plus rigide, son encombrement est plus important, notamment lors de son stockage. Cela présente un inconvénient important étant donné que l'espace disponible sur une plateforme pétrolière est précieux. On connaît par ailleurs une structure rigide, dans laquelle les opérateurs sont assis, accrochée à la grue. Une telle structure est adaptée pour flotter dans l'eau. Cependant, elle présente un encombrement encore plus important et une prise au vent importante pouvant provoquer des mouvements de la structure lors de son déplacement. De plus, les opérateurs étant assis, il ne leur est pas possible de s'extraire rapidement de la structure, ni d'amortir les chocs verticaux. In order to solve some of these problems, document US205023853A1 discloses an improved structure further comprising a rigid central pillar mounted between the two buoys in order to keep them apart. However, such a structure being more rigid, its bulk is greater, especially during storage. This presents a significant disadvantage as the space available on an oil platform is valuable. Also known is a rigid structure, in which the operators are sitting, hooked to the crane. Such a structure is adapted to float in water. However, it has an even larger footprint and a significant wind resistance that can cause movements of the structure during its movement. In addition, the operators being seated, it is not possible for them to get out of the structure quickly, nor to cushion the vertical shocks.
Dans un autre domaine technique, on connaît une nacelle militaire pour hélicoptère. Une telle nacelle comprend des bras montés articulés sur un mât, à la manière d'un parapluie, afin de former une base de support lors du transport de personnes et qui peuvent être pliés en position de stockage afin de limiter l'encombrement de la nacelle. Cependant, une telle nacelle n'est pas adaptée pour le transport entre une barge et une plateforme pétrolière. En effet, une nacelle pour hélicoptère permet de déplacer des personnes sur des distances importantes. Aussi, les personnes sont assises sur la nacelle et attachées à l'aide d'un harnais. Or, comme cela a été décrit précédemment, dans le cas de la plateforme pétrolière, les personnes doivent pouvoir évacuer rapidement la nacelle et amortir les chocs verticaux. Une nacelle militaire comporte par ailleurs un système d'ouverture fixé à l'extrémité supérieure du mât. In another technical field, there is a military helicopter nacelle. Such nacelle includes articulated arms mounted on a mast, in the manner of an umbrella, to form a support base during the transport of people and which can be folded in the storage position to limit the size of the nacelle . However, such a nacelle is not suitable for transport between a barge and an oil platform. Indeed, a helicopter nacelle can move people over long distances. Also, people are sitting on the basket and attached using a harness. However, as described above, in the case of the oil rig, people must be able to quickly evacuate the platform and cushion vertical shocks. A military nacelle also has an opening system attached to the upper end of the mast.
Il existe donc un besoin pour une structure pouvant être reliée à la grue d'une plateforme pétrolière et permettant de déplacer de manière sécurisée les opérateurs tout en présentant un encombrement réduit, notamment lors du stockage de la structure. Il existe également un besoin pour une structure apte à flotter pendant une longue période, permettant aux opérateurs une visibilité à 360° et permettant des transports de différentes natures : personnes, matériel, personnes blessées sur civière, etc. There is therefore a need for a structure that can be connected to the crane of an oil platform and to move operators safely while having a small footprint, especially during the storage of the structure. There is also a need for a structure that can float for a long time, allowing operators 360 ° visibility and allowing different types of transport: people, equipment, people injured on stretcher, etc.
PRESENTATION GENERALE DE L'INVENTION GENERAL PRESENTATION OF THE INVENTION
A cette effet, l'invention concerne une nacelle de transport de personnes, notamment entre une barge et une plateforme pétrolière, comprenant un mât central s'étendant axialement entre un pied et une tête de levage adaptée pour être reliée à une élingue afin de déplacer la nacelle, et une pluralité de bras s'étendant entre une extrémité de fixation et une extrémité libre, l'extrémité de fixation de chaque bras étant montée de manière articulée sur le mât central au niveau de son pied entre une position de stockage dans laquelle chaque bras s'étend sensiblement parallèlement au mât central, et une position d'utilisation dans laquelle chaque bras s'étend sensiblement orthogonalement au mât central de manière à former une base de support sur laquelle des personnes peuvent monter en position debout, le mât central comprenant en outre, au niveau de sa tête, au moins un organe de préhension périphérique adapté pour permettre aux personnes de s'agripper lors du déplacement. Grâce à la nacelle selon l'invention, une personne peut aisément être déplacée entre une plateforme pétrolière et une barge en montant sur la nacelle reliée à une grue. De plus, un tel déplacement est sécurisé grâce à l'utilisation d'une base de support sur laquelle une personne se tient debout et d'un organe de préhension périphérique auquel plusieurs personnes peuvent se tenir de manière simultanée. Une telle préhension est par ailleurs ergonomique en effet, la personne pourra amortir les chocs verticaux à l'aide de ses jambes du fait de sa position debout, et le fait qu'elle saisisse la nacelle à la main lui permet de se stabiliser durant le déplacement. Enfin, la nacelle présente un encombrement limité en position de stockage grâce aux bras qui se replient le long du mât central tout en pouvant être manipulée du fait de son organe de préhension. To this end, the invention relates to a nacelle for transporting people, in particular between a barge and a petroleum platform, comprising a central mast extending axially between a foot and a lifting head adapted to be connected to a sling in order to move the nacelle, and a plurality of arms extending between a fixing end and a free end, the fixing end of each arm being hingedly mounted on the central mast at its foot between a storage position in which each arm extends substantially parallel to the central mast, and a use position in which each arm extends substantially orthogonal to the central mast so as to form a support base on which people can ride in a standing position, the central mast further comprising, at the level of its head, at least one peripheral gripping member adapted to allow persons to grip rs of displacement. With the nacelle according to the invention, a person can easily be moved between an oil platform and a barge while climbing on the platform connected to a crane. In addition, such a movement is secured through the use of a support base on which a person is standing and a peripheral grip member to which several people can stand simultaneously. Such a grip is also ergonomic indeed, the person can cushion the vertical shocks with his legs because of his standing position, and the fact that it grips the basket by hand allows it to stabilize during the displacement. Finally, the nacelle has a limited space in storage position thanks to the arms that fold along the central mast while being able to be manipulated because of its gripping member.
De préférence, l'organe de préhension périphérique définit une pluralité de poignées élémentaires afin que chaque personne qui monte sur la nacelle puisse saisir une des poignées élémentaires, permettant ainsi à plusieurs personnes de saisir l'organe de préhension périphérique en même temps. Preferably, the peripheral gripping member defines a plurality of elementary handles so that each person who rides on the basket can grasp one of the elementary handles, thus allowing several people to grasp the peripheral grip member at the same time.
Avantageusement, la distance entre l'organe de préhension périphérique et l'extrémité de liaison des bras est supérieure à la longueur d'un bras de manière à ce que, en position de stockage, les bras ne recouvrent pas l'organe de préhension périphérique et ainsi laissent libre accès à l'organe de préhension périphérique afin qu'un opérateur puisse le saisir pour déplacer la nacelle. Advantageously, the distance between the peripheral gripping member and the connecting end of the arms is greater than the length of an arm so that, in the storage position, the arms do not cover the peripheral gripping member. and thus leave free access to the peripheral gripping member so that an operator can grasp it to move the nacelle.
De manière préférée, la nacelle comprend au moins un filet monté entre la pluralité de bras afin de former la base de support avec les bras. Un tel filet monté entre les bras forme ainsi une surface importante permettant à plusieurs personnes de monter sur la base de support en même temps. Preferably, the nacelle comprises at least one thread mounted between the plurality of arms to form the support base with the arms. Such a net mounted between the arms thus forms a large surface allowing several people to climb on the support base at the same time.
De préférence, chaque bras est relié à la tête du mât central par au moins un câble configuré pour maintenir le bras orthogonal au mât central en position d'utilisation. Ainsi, la résistance des bras en position d'utilisation est augmentée, ce qui leur permet de soulever le poids de plusieurs personnes. Preferably, each arm is connected to the head of the central mast by at least one cable configured to maintain the orthogonal arm to the central mast in the use position. Thus, the resistance of the arms in the use position is increased, which allows them to lift the weight of several people.
Selon un aspect de l'invention, la nacelle comprend un organe de flottaison adapté pour permettre à la nacelle de flotter dans l'eau, de préférence, monté autour du mât central afin de maintenir les personnes en sécurité sur la nacelle lorsque cette dernière tombe à l'eau. According to one aspect of the invention, the nacelle comprises a flotation device adapted to allow the nacelle to float in the water, preferably mounted around the central mast to keep people safe on the nacelle when the latter falls. at the water.
De préférence, l'organe de flottaison s'étend de manière périphérique autour du mât central et comporte une pluralité d'empreintes radiales adaptées pour permettre le pliage des bras en position de stockage afin de limiter l'encombrement de la nacelle. Avantageusement, le mât central comprend un organe de sécurisation adapté pour permettre la sécurisation d ' un harnais, l' organe de sécurisation étant placé sous l' organe de préhension périphérique. Ainsi, une personne montant sur la nacelle peut s' attacher à la nacelle afin de réduire le risque que cette personne tombe de la nacelle. De plus, un tel placement de l' organe de sécurisation sous l' organe de préhension périphérique permet à une personne d'y accéder aisément afin qu 'elle puisse s' attacher et se détacher rapidement, permettant ainsi une évacuation rapide, voire urgente, de la nacelle. L' invention concerne également un ensemble d' une nacelle telle que décrite précédemment et d ' une élingue reliée à la tête de la nacelle, élingue comprenant un câble longitudinal et des moyens élastiques reliant deux portions dudit câble longitudinal afin d 'amortir les mouvements verticaux de la nacelle, notamment lorsque celle-ci est posée sur le pont d ' une barge. L' invention vise en outre un procédé d ' utilisation d ' une nacelle telle que décrite précédemment pour le transport de personnes entre une barge et une plateforme pétrolière permettant ainsi de transporter de manière aisée et sécurisée les personnes. Avantageusement, un tel procédé permet de transporter des personnes, du matériel, ou bien les deux en même temps (notamment dans le cas d' une civière) . Preferably, the flotation member extends peripherally around the central mast and has a plurality of radial impressions adapted to allow folding of the arms in the storage position to limit the size of the nacelle. Advantageously, the central mast comprises a securing member adapted to allow the securing of a harness, the securing member being placed under the peripheral gripping member. Thus, a person climbing on the basket can be attached to the basket to reduce the risk that the person falls from the basket. In addition, such placement of the securing member under the peripheral gripping member allows a person to easily access it so that it can attach and detach quickly, allowing a quick evacuation, if not urgent, of the nacelle. The invention also relates to an assembly of a nacelle as described above and a sling connected to the head of the nacelle, sling comprising a longitudinal cable and elastic means connecting two portions of said longitudinal cable in order to damp the vertical movements. of the nacelle, particularly when it is placed on the deck of a barge. The invention further relates to a method of using a nacelle as described above for the transport of persons between a barge and a petroleum platform thus making it possible to transport people in an easy and secure manner. Advantageously, such a method makes it possible to transport people, equipment, or both at the same time (especially in the case of a stretcher).
PRESENTATION DES FIGURES PRESENTATION OF FIGURES
L' invention sera mieux comprise à la lecture de la description qui va suivre, donnée uniquement à titre d' exemple, et se référant aux dessins annexés sur lesquels : The invention will be better understood on reading the description which will follow, given solely by way of example, and referring to the appended drawings in which:
- la figure 1 est une vue schématique d ' une forme de réalisation d ' une nacelle selon l' invention en position d ' utilisation,  FIG. 1 is a schematic view of an embodiment of a nacelle according to the invention in the position of use,
la figure 2 est une vue schématique de la nacelle de la figure 1 en position de stockage et  FIG. 2 is a schematic view of the nacelle of FIG. 1 in storage position and
la figure 3 est une représentation schématique en perspective de la nacelle lors du déploiement des bras.  Figure 3 is a schematic perspective view of the nacelle during the deployment of the arms.
Il faut noter que les figures exposent l' invention de manière détaillée pour mettre en œuvre l' invention, lesdites figures pouvant bien entendu servir à mieux définir l' invention le cas échéant. DESCRIPTION D'UN OU PLUSIEURS MODES DE REALISATION ET DE MISE EN OEUVRE It should be noted that the figures disclose the invention in detail to implement the invention, said figures can of course be used to better define the invention where appropriate. DESCRIPTION OF ONE OR MORE MODES OF REALIZATION AND IMPLEMENTATION
Une plateforme pétrolière est une plateforme d 'exploration, de forage et d 'exploitation de gisement d ' hydrocarbure qui est installée au large des côtes, autrement dit, dans la mer, afin d'explorer, de forer ou d'exploiter un gisement d'hydrocarbure sous-marin. Une plateforme pétrolière est également désignée plateforme « offshore », pour « au large » en langue anglaise. An oil platform is a platform for offshore oil exploration, drilling and exploitation, ie in the sea, in order to explore, drill or exploit an underwater hydrocarbon deposit. An oil platform is also referred to as an offshore platform for offshore in English.
Une telle plateforme pétrolière est une structure, généralement métallique, qui peut reposer sur le fond marin ou bien flotter à la surface de l'eau. La plateforme comprend ainsi une partie immergée dans l'eau afin de permettre à la plateforme de reposer sur le fond marin ou bien de flotter, et une partie submergée située au-dessus du niveau de l'eau. Des opérateurs de la plateforme travaillent sur la partie submergée afin d'accomplir leurs tâches. La plateforme étant située à distance de la côte, on utilise généralement un bateau de transport, également désigné barge, pour transporter du matériel ainsi que des opérateurs vers et/ou depuis la plateforme. Such an oil platform is a structure, usually metallic, that can rest on the seabed or float on the surface of the water. The platform thus includes a portion immersed in the water to allow the platform to rest on the seabed or to float, and a submerged portion located above the water level. Operators of the platform work on the submerged part to perform their tasks. Since the platform is located at a distance from the coast, a transport boat, also known as a barge, is generally used to transport equipment and operators to and / or from the platform.
La plateforme comprend une grue permettant de déplacer du matériel ainsi que des opérateurs, notamment entre la plateforme et une barge. En effet, lorsque la barge est à proximité de la plateforme, la grue permet de déplacer les opérateurs depuis la surface de l'eau où est située la barge à la partie submergée de la plateforme qui s'étend au-dessus de la surface de l'eau. La différence de hauteur entre la barge de ravitaillement et la plateforme peut atteindre plusieurs dizaines de mètres et varie au cours du temps. Cette variation de la hauteur verticale de la barge doit être prise en compte lors des opérations de déplacement. Pour déplacer des opérateurs, il va dorénavant être présenté une nacelle selon une forme de réalisation de l'invention. The platform includes a crane to move equipment and operators, especially between the platform and a barge. Indeed, when the barge is close to the platform, the crane can move the operators from the water surface where the barge is located to the submerged part of the platform that extends above the surface of the boat. the water. The difference in height between the barge and the platform can reach several tens of meters and varies over time. This variation of the vertical height of the barge must be taken into account during displacement operations. To move operators, it will now be presented a nacelle according to one embodiment of the invention.
En référence à la figure 1 , la nacelle 1 selon l'invention comprend un mât central 10 adapté pour être relié à une élingue E, et une pluralité de bras 2 montés de manière mobile sur le mât central 10 entre une position de stockage (Figure 2) et une position d'utilisation (Figure 1 ). With reference to FIG. 1, the nacelle 1 according to the invention comprises a central mast 10 adapted to be connected to a sling E, and a plurality of arms 2 movably mounted on the central mast 10 between a storage position (FIG. 2) and a position of use (Figure 1).
Par la suite, la nacelle 1 est décrite dans le repère (X, Z) dans lequel l'axe Z s'étend verticalement du bas vers le haut et l'axe X s'étend horizontalement de gauche à droite. En référence à la figure 1 , le mât central 10 comprend un corps s'étendant longitudinalement selon l'axe vertical Z entre une extrémité inférieure et une extrémité supérieure, désignées respectivement « pied 1 1 » et « tête 12 » dans la suite de la description. Le mât central 10 est réalisé en matériau métallique ou composite de manière à posséder une résistance mécanique élevée. De manière préférée, sa longueur est comprise entre 1 ,4 m et 2 m afin d'offrir un confort optimal aux opérateurs tout en limitant son encombrement. Subsequently, the nacelle 1 is described in the reference (X, Z) in which the Z axis extends vertically from bottom to top and the X axis extends horizontally from left to right. Referring to Figure 1, the central mast 10 comprises a body extending longitudinally along the vertical axis Z between a lower end and an upper end, respectively designated "foot 1 1" and "head 12" in the remainder of the description. The central mast 10 is made of metal or composite material so as to have a high mechanical strength. Preferably, its length is between 1, 4 m and 2 m in order to offer optimum comfort to operators while limiting its size.
En référence aux figures 1 et 2, le mât central 10 comprend un organe de liaison 13 de la nacelle 1 à une grue. Afin de maintenir le mât central 10 vertical lors du déplacement de la nacelle 1 , l'organe de liaison 13 est situé au niveau de la tête 12 du mât central 10, c'est-à-dire, à son extrémité supérieure. La nacelle 1 est ainsi suspendue à la grue, ce qui permet de maintenir le mât central 10 vertical sous l'effet de la gravité. Plus particulièrement, l'organe de liaison 13 est relié à élingue E qui permet de relier la nacelle 1 à la grue. De préférence, l'organe de liaison 13 se présente sous la forme d'une boucle ou d'un crochet de fixation de rélingue E. Referring to Figures 1 and 2, the central mast 10 comprises a connecting member 13 of the nacelle 1 to a crane. In order to keep the central mast vertical when the pod 1 is moving, the connecting member 13 is located at the head 12 of the central mast 10, that is to say, at its upper end. The nacelle 1 is thus suspended from the crane, which keeps the central mast 10 vertical under the effect of gravity. More particularly, the connecting member 13 is connected to sling E which connects the nacelle 1 to the crane. Preferably, the connecting member 13 is in the form of a loop or a hook of secling E.
Les bras 2 sont montés de manière mobile au mât central 10 afin de former, en position d'utilisation, une base de support sur laquelle peuvent monter des opérateurs. Chaque bras 2 comprend un corps s'étendant longitudinalement entre une extrémité de liaison 21 et une extrémité libre 22. Dans cet exemple illustré à la figure 3, chaque extrémité de liaison 21 d'un bras 2 est reliée au pied 1 1 du mât central 10 par un mécanisme d'articulation 23 autour d'un axe d'articulation qui est orthogonal à l'axe selon lequel s'étend le mât central 10. De préférence, chaque bras 2 est réalisé en matériau métallique ou composite de manière à posséder une résistance mécanique élevée. De manière préférée, la longueur d'un bras 2 est inférieure à la longueur du mât 10 et, de préférence, comprise entre 1 m et 1 ,9 m afin de permettre son stockage avec le mât central 10. The arms 2 are movably mounted to the central mast 10 to form, in the use position, a support base on which operators can mount. Each arm 2 comprises a body extending longitudinally between a connecting end 21 and a free end 22. In this example illustrated in FIG. 3, each connecting end 21 of an arm 2 is connected to the foot 1 1 of the central mast. 10 by an articulation mechanism 23 about an axis of articulation which is orthogonal to the axis along which the central mast 10 extends. Preferably, each arm 2 is made of metal or composite material so as to have high mechanical strength. Preferably, the length of an arm 2 is less than the length of the mast 10 and, preferably, between 1 m and 1.9 m in order to allow its storage with the central mast 10.
Dans cet exemple, le mécanisme d'articulation 23 se présente sous la forme d'une charnière autorisant la rotation du bras 2 par rapport au mât central 10. Autrement dit, les bras 2 sont mobiles par rapport au mât central 10 afin de se déployer radialement à la manière d'un parapluie. In this example, the hinge mechanism 23 is in the form of a hinge allowing rotation of the arm 2 relative to the central mast 10. In other words, the arms 2 are movable relative to the central mast 10 to deploy radially like an umbrella.
En référence à la figure 1 , en position d'utilisation de la nacelle 1 , chaque bras 2 s'étend orthogonalement au mât central 10, c'est-à-dire horizontalement afin de former une base de support au niveau du pied 1 1 du mât central 10. Dans cet exemple, les bras 2 s'étendent radialement au mât central 10 afin de former une base de support de dimensions importantes. En position de stockage, l'extrémité libre 22 de chaque bras 2 est repliée vers la tête 12 du mât central 10. Autrement dit, chaque bras 2 est basculé vers le haut en position de stockage comme illustré à la figure 2. En position de stockage de la nacelle 1 , chacun des bras 2 s'étend verticalement, autrement dit sensiblement parallèlement au mât central 10 afin de limiter l'encombrement de la nacelle 1 . With reference to FIG. 1, in the position of use of the nacelle 1, each arm 2 extends orthogonally to the central mast 10, that is to say horizontally so as to form a support base at the level of the foot 1 10. In this example, the arms 2 extend radially to the central mast 10 to form a support base of large dimensions. In the storage position, the free end 22 of each arm 2 is folded towards the head 12 of the central mast 10. In other words, each arm 2 is tilted upwards in the storage position as shown in FIG. storage nacelle 1, each of the arms 2 extends vertically, in other words substantially parallel to the central mast 10 to limit the size of the nacelle 1.
De manière préférée, afin de former une base de support dont la surface est continue, la nacelle 1 comporte un filet (non représenté) monté entre les bras 2. Le filet permet ainsi de former une surface de support entre les bras 2 afin d'augmenter les dimensions de la base de support et, par voie de conséquence, le nombre d'opérateurs pouvant monter sur la base de support. Un tel filet permet en outre d'augmenter la stabilité en offrant plus de place aux opérateurs pour placer leurs pieds. De préférence, le filet possède une forme de triangle et est solidarisé à chaque bras 2. Un tel filet est une structure souple qui peut être pliée lors du basculement des bras 2 en position de stockage. Ceci permet ainsi de limiter l'encombrement de la nacelle 1 en position de stockage. De plus, un filet présente une masse limitée, ce qui permet de rendre aisée la manipulation de la nacelle 1 en position de stockage. Le filet est réalisé dans un matériau pas ou peu poreux, afin de limiter l'absorption d'eau lors de l'utilisation de la nacelle 1 en mer comme cela sera décrit par la suite. Enfin, l'utilisation d'un filet permet de limiter la prise au vent de la nacelle 1 . Preferably, in order to form a support base whose surface is continuous, the nacelle 1 comprises a net (not shown) mounted between the arms 2. The net thus makes it possible to form a support surface between the arms 2 in order to increase the size of the support base and, consequently, the number of operators that can mount on the support base. Such a net also increases stability by providing more room for operators to place their feet. Preferably, the net has a triangle shape and is secured to each arm 2. Such a net is a flexible structure that can be folded during the tilting of the arms 2 in the storage position. This thus makes it possible to limit the size of the nacelle 1 in the storage position. In addition, a net has a limited mass, which makes it easy to handle the platform 1 in the storage position. The net is made of a material with little or no porosity, in order to limit the absorption of water during the use of the nacelle 1 at sea as will be described later. Finally, the use of a net makes it possible to limit the catch in the wind of the pod 1.
Afin de limiter l'ouverture de chaque bras à 90° par rapport au mât central 10, la nacelle 1 comprend en outre une pluralité de câbles 31 , 32 afin de relier chaque bras 2 au mât central 10. Dans cet exemple, en référence à la figure 1 , la nacelle 1 comprend une pluralité de premiers câbles 31 , reliant la tête 12 du mât central 10 à l'extrémité libre 22 de chaque bras 2, et une pluralité de deuxièmes câbles 32, reliant la tête 12 du mât central 10 à une portion centrale de chaque bras 2, ladite portion centrale étant située entre l'extrémité de liaison 21 et l'extrémité libre 22 de chaque bras 2. In order to limit the opening of each arm to 90 ° relative to the central mast 10, the nacelle 1 further comprises a plurality of cables 31, 32 for connecting each arm 2 to the central mast 10. In this example, with reference to 1, the nacelle 1 comprises a plurality of first cables 31, connecting the head 12 of the central mast 10 to the free end 22 of each arm 2, and a plurality of second cables 32, connecting the head 12 of the central mast 10 at a central portion of each arm 2, said central portion being located between the connecting end 21 and the free end 22 of each arm 2.
En position d'utilisation, les câbles 31 , 32 sont tendus de manière à bloquer les bras 2 dans un plan horizontal. Ceci permet ainsi de maintenir les bras 2 horizontaux lorsque des opérateurs montent sur la base de support. L'utilisation de deux types de câbles 31 , 32 permet d'optimiser la résistance de la base de support mais il va de soi que la nacelle 1 pourrait ne comprendre qu'un type de câble ou plus de deux types. De préférence, les câbles 31 , 32 sont souples afin d'être pliés lors du basculement des bras 2 en position de stockage. Ceci permet de limiter l'encombrement de la nacelle 1 en position de stockage. De plus, les câbles 31 , 32 présentent, pour une résistance optimale, une masse limitée, ce qui permet de rendre aisée la manipulation de la nacelle 1 en position de stockage. Enfin, lors de l'utilisation, les câbles 31 , 32 permettent de remplir une fonction de garde-corps limitant le déplacement d'un opérateur situé sur la base de support à un secteur de la base de support. In the position of use, the cables 31, 32 are stretched so as to lock the arms 2 in a horizontal plane. This thus makes it possible to maintain the horizontal arms 2 when operators are mounting on the support base. The use of two types of cables 31, 32 makes it possible to optimize the strength of the support base, but it goes without saying that the platform 1 could comprise only one type of cable or more than two types. Preferably, the cables 31, 32 are flexible so as to be folded during the tilting of the arms 2 in the storage position. This makes it possible to limit the size of the nacelle 1 in the storage position. In addition, the cables 31, 32 have, for optimum strength, a limited mass, which makes it easy to manipulate the platform 1 in the storage position. Finally, in use, the cables 31, 32 serve to fulfill a guardrail function limiting the movement of an operator on the support base to a sector of the support base.
Selon l'invention, le mât central 10 comprend, au niveau de sa tête 12, au moins un organe de préhension périphérique 14 adapté pour permettre aux personnes de s'agripper lors du déplacement. L'organe de préhension périphérique 14 permet aux opérateurs qui montent sur la nacelle 1 de se tenir par les mains. En effet, comme les opérateurs sont debout sur la base de support, ils peuvent stabiliser leur position et garder leur équilibre en se tenant à l'organe de préhension périphérique 14. Afin d'optimiser une telle stabilisation, l'organe de préhension périphérique 14 est situé au niveau de la tête 12 du mât central 10, en particulier, sous l'organe de liaison 13 afin que les opérateurs ne soient pas en contact de l'élingue E. De préférence, l'organe de préhension périphérique 14 s'étend à une distance supérieure à 10 cm par rapport à l'extrémité de liaison 21 des bras 2 de manière à ce que l'extrémité libre 22 des bras 2 s'étende sous l'organe de préhension périphérique 14 en position de stockage comme illustré à la figure 2. Ainsi, un opérateur peut saisir l'organe de préhension périphérique 14 afin de déplacer la nacelle 1 en position de stockage. Un tel organe de préhension périphérique 14 présente ainsi une double fonction de stabilisation des opérateurs en position d'utilisation et de saisie de la nacelle 1 en position de stockage. According to the invention, the central mast 10 comprises, at its head 12, at least one peripheral gripping member 14 adapted to allow people to grip during movement. The peripheral gripping member 14 allows operators who climb on the pod 1 to hold hands. Indeed, as the operators are standing on the support base, they can stabilize their position and keep their balance by holding the peripheral gripping member 14. In order to optimize such stabilization, the peripheral gripping member 14 is located at the head 12 of the central mast 10, in particular, under the connecting member 13 so that the operators are not in contact with the sling E. Preferably, the peripheral gripping member 14 is extends at a distance greater than 10 cm from the connecting end 21 of the arms 2 so that the free end 22 of the arms 2 extends under the peripheral gripping member 14 in the storage position as shown in Figure 2. Thus, an operator can enter the peripheral gripping member 14 to move the nacelle 1 in the storage position. Such a peripheral gripping member 14 thus has a dual function of stabilizing the operators in the position of use and gripping of the nacelle 1 in the storage position.
De préférence, l'organe de préhension périphérique 14 se présente sous la forme d'un cercle, dont le diamètre est supérieur à 50 cm, qui est relié au mât central 10 par des segments radiaux. Une telle forme de réalisation permet de définir une pluralité de poignées élémentaires pour les opérateurs. Preferably, the peripheral gripping member 14 is in the form of a circle, whose diameter is greater than 50 cm, which is connected to the central mast 10 by radial segments. Such an embodiment makes it possible to define a plurality of elementary handles for the operators.
Dans cet exemple, toujours en référence aux figures 1 et 2, la nacelle 1 comporte un organe de sécurisation 15 pour permettre aux opérateurs d'attacher leur harnais H. Un tel organe de sécurisation 15 s'étend de manière périphérique autour du mât central 10 et comporte une pluralité de boucles auxquelles un opérateur peut fixer un mousqueton ou analogue. In this example, still with reference to FIGS. 1 and 2, the platform 1 comprises a securing member 15 to enable the operators to attach their harness H. Such a securing member 15 extends peripherally around the central mast 10 and has a plurality of loops to which an operator can attach a carabiner or the like.
L'organe de sécurisation 15 est situé sous l'organe de préhension périphérique 14 afin de faciliter les opérations d'accrochage et de décrochage manuel du harnais H, situé au niveau des hanches de l'opérateur, à l'organe de sécurisation 15. Comme l'organe de sécurisation 15 est situé à hauteur des mains de l'opérateur, cela permet un décrochage rapide en cas d'évacuation urgente de la nacelle 1 tout en lui permettant de se maintenir à l'organe de préhension périphérique 14. The securing member 15 is located under the peripheral gripping member 14 to facilitate the operations of attachment and manual unhooking of the harness H, located at the operator's hips, to the securing member 15. As the securing member 15 is located at the height of the hands of the operator, this allows a quick release in case of emergency evacuation of the platform 1 while allowing it to be maintained at the peripheral gripping member 14.
De manière préférée, l'organe de sécurisation 15 s'étend à hauteur de l'extrémité libre 22 des bras 2 en position de stockage afin de former une butée lors du pliage des bras 2 comme illustré à la figure 2. De préférence, le diamètre de l'organe de sécurisation 15 est déterminé de manière à ce que les bras 2 s'étendent sensiblement parallèlement au mât central 10. In a preferred manner, the securing member 15 extends up to the free end 22 of the arms 2 in the storage position in order to form a stop when the arms 2 are folded as illustrated in FIG. the diameter of the securing member 15 is determined so that the arms 2 extend substantially parallel to the central mast 10.
En référence aux figures 1 et 2, la nacelle 1 comprend également un organe de flottaison 7 configuré pour faire flotter la nacelle 1 à la surface de l'eau dans le cas où la nacelle 1 ne serait plus reliée à la grue. Ainsi, même en cas d'incident, la nacelle 1 permet de maintenir les opérateurs à la surface de l'eau. Un tel organe de flottaison 7 est monté autour du mât central 10, de préférence entre la tête 12 et le pied 1 1 afin de maintenir verticalement le mât central 10 et permettre aux opérateurs de se tenir debout sur la base de support. With reference to FIGS. 1 and 2, the nacelle 1 also comprises a buoyancy member 7 configured to float the nacelle 1 on the surface of the water in the case where the nacelle 1 is no longer connected to the crane. Thus, even in the event of an incident, the nacelle 1 makes it possible to keep the operators on the surface of the water. Such a flotation member 7 is mounted around the central mast 10, preferably between the head 12 and the foot 1 1 in order to maintain the central mast 10 vertically and allow the operators to stand on the support base.
L'organe de flottaison 7 est réalisé en un matériau présentant une masse volumique inférieure à la masse volumique de l'eau afin de flotter. De manière préférée, en référence à la figure 3, l'organe de flottaison 7 s'étend de manière périphérique autour du mât central 10 et comporte une pluralité d'empreintes radiales 71 adaptées pour permettre le pliage des bras 2. Autrement dit, l'organe de flottaison 7 comporte une pluralité de lobes radiaux 72 répartis à la périphérie du mât central 10. The flotation member 7 is made of a material having a density less than the density of the water in order to float. Preferably, with reference to FIG. 3, the flotation member 7 extends peripherally around the central mast 10 and has a plurality of radial impressions 71 adapted to allow the folding of the arms 2. In other words, flotation member 7 comprises a plurality of radial lobes 72 distributed around the periphery of the central mast 10.
L'organe de flottaison 7 présente une certaine souplesse, ce qui permet d'absorber d'éventuels chocs latéraux des opérateurs contre le mât central 10. The flotation member 7 has a certain flexibility, which makes it possible to absorb any lateral impact of the operators against the central mast 10.
Dans cet exemple, la nacelle 1 comprend également des organes d'absorption de chocs 8 afin d'éviter les heurts contre la barge ou la plateforme. En référence aux figures 1 et 2, un organe d'absorption de chocs 8 est situé au niveau du pied 1 1 du mât central 10 lorsque la nacelle 1 est posée. Un organe d'absorption de chocs 8 est également prévu au niveau de l'extrémité libre 22 de chaque bras 2 afin d'absorber les chocs latéraux de la nacelle 1 , par exemple contre les parois verticales de la barge ou de la plateforme. Ainsi, lorsque la nacelle 1 est déplacée à proximité de la barge ou de la plateforme, les chocs dus aux secousses de la nacelle 1 sont absorbés, ce qui limite le risque de chute des opérateurs. In this example, the nacelle 1 also comprises shock absorbing members 8 to avoid clashes against the barge or the platform. Referring to Figures 1 and 2, a shock absorbing member 8 is located at the foot 1 1 of the central mast 10 when the nacelle 1 is placed. A shock absorbing member 8 is also provided at the free end 22 of each arm 2 to absorb lateral shocks of the nacelle 1, for example against the vertical walls of the barge or the platform. Thus, when the platform 1 is moved near the barge or the platform, shocks from the shake of the pod 1 are absorbed, which limits the risk of falling operators.
En référence à la figure 1 , la nacelle 1 est reliée à la grue par une élingue E. De manière connue, l'élingue E se présente sous la forme d'un câble s'étendant longitudinalement et dont une extrémité peut être reliée à la grue tandis que l'autre extrémité peut être reliée à la nacelle 1 . Un crochet peut être monté au niveau d'au moins une de ces extrémités afin de faciliter les opérations d'accrochage et de détachement de l'élingue E à la grue et/ou à la nacelle 1 . With reference to FIG. 1, the nacelle 1 is connected to the crane by a sling E. In a known manner, the sling E is in the form of a cable extending longitudinally and one end of which can be connected to the crane while the other end can be connected to the nacelle 1. A hook may be mounted at at least one of these ends to facilitate the attachment and detachment operations of the sling E to the crane and / or the nacelle 1.
De manière préférée, l'élingue E comprend un système de rattrapage vertical permettant de rattraper le mou entre la grue et la nacelle 1 . Un tel système de rattrapage vertical se présente sous la forme d'un câble élastique El reliant deux portions de l'élingue E. Le câble élastique El permet ainsi de former une doublure d'une partie de l'élingue E. Le câble élastique El présente une longueur inférieure à cette partie de l'élingue E afin que, lorsque l'élingue E est tendue, le câble élastique El s'étire et que, lorsque l'élingue E n'est pas tendue, le câble élastique El se contracte, assurant ainsi une tension dans l'élingue E entre les deux portions que relie le câble élastique El . Ainsi, une tension est toujours appliquée par l'élingue E entre la grue et la nacelle 1 , ce qui permet d'éviter que l'élingue E ne gêne les opérateurs à bord de la nacelle 1 lorsque la grue, ou le mouvement de la barge sur la mer générant un mouvement de balancier vertical, lui donne du mou. In a preferred manner, the sling E comprises a vertical catch-up system making it possible to catch the slack between the crane and the nacelle 1. Such a vertical catch-up system is in the form of an elastic cable El connecting two portions of the sling E. The elastic cable El thus makes it possible to form a lining of a portion of the sling E. The elastic cable El has a length less than this part of the sling E so that, when the sling E is stretched, the elastic cable El stretches and when the sling E is not stretched, the elastic cable El contracts , thus ensuring a tension in the sling E between the two portions that connects the elastic cable El. Thus, a tension is always applied by the sling E between the crane and the nacelle 1, which makes it possible to prevent the sling E from interfering with the operators aboard the platform 1 when the crane, or the movement of the barge on the sea generating a vertical pendulum movement, gives him soft.
Il va maintenant être décrit un exemple d'utilisation de la nacelle 1 selon l'invention pour débarquer des opérateurs d'une plateforme pétrolière. Tout d'abord, la nacelle 1 est stockée en position de stockage dans la plateforme pétrolière afin de réduire son encombrement. Lorsque la nacelle 1 doit être utilisée, un opérateur peut saisir la nacelle 1 par l'organe de préhension périphérique 14 afin de la placer à un emplacement accessible à élingue E reliée à la grue de la plateforme pétrolière. It will now be described an example of use of the pod 1 according to the invention for disembarking operators of an oil platform. First, the nacelle 1 is stored in storage position in the oil platform to reduce its size. When the nacelle 1 is to be used, an operator can enter the nacelle 1 by the peripheral gripping member 14 in order to place it at a location accessible to sling E connected to the crane of the oil platform.
Puis, l'opérateur déploie les bras 2 afin que ceux-ci se déploient en position d'utilisation. Les bras 2 se baissent alors jusqu'à ce que les câbles 31 , 32 soient tendus. Lors du déploiement des bras 2, le filet est également tendu afin de former, avec les bras 2, la base de support. La nacelle 1 est ensuite reliée à la grue à l'aide de rélingue E qui est reliée à l'organe de liaison 13. Les opérateurs montent alors debout sur la base de support, accrochent leur harnais H à l'organe de sécurisation 15 et saisissent l'organe de préhension périphérique 14 afin de se stabiliser. La grue est alors actionnée afin de lever la nacelle 1 et déplacer les opérateurs jusqu'à la barge où ces derniers peuvent rapidement évacuer la nacelle 1 en décrochant leur harnais H. Lors du déplacement, les chocs sont minimisés, ce qui limite le risque de chute. Then, the operator deploys the arms 2 so that they deploy in the use position. The arms 2 are then lowered until the cables 31, 32 are stretched. During the deployment of the arms 2, the net is also stretched to form, with the arms 2, the support base. The nacelle 1 is then connected to the crane with the help of sling E which is connected to the connecting member 13. The operators then stand upright on the support base, hook their harness H to the securing member 15 and grip the peripheral gripping member 14 to stabilize. The crane is then actuated to lift the platform 1 and move the operators to the barge where they can quickly evacuate the platform 1 by unhooking their harness H. During the displacement, the shocks are minimized, which limits the risk of fall.
En cas de chute, la nacelle 1 peut flotter à la surface de l'eau grâce à l'organe de flottaison 7, ce qui laisse du temps aux secours pour intervenir. In the event of a fall, the platform 1 can float on the surface of the water thanks to the flotation device 7, which gives the rescuers time to intervene.
Après le transport des opérateurs, la nacelle 1 est détachée de l'élingue E puis les bras 2 sont basculés en position de stockage et verrouillés. II a été présenté une nacelle pour le transport de personnes sur une plateforme pétrolière mais il va de soi que l'invention s'applique dans d'autres domaines, notamment, le domaine militaire, de la construction, du génie civile, de l'exploitation minière, etc. After the transport of the operators, the nacelle 1 is detached from the sling E and the arms 2 are tilted to the storage position and locked. A nacelle was presented for the transport of people on a petroleum platform, but it goes without saying that the invention applies in other fields, in particular, the military field, construction, civil engineering, mining, etc.

Claims

REVENDICATIONS
1. Nacelle (1 ) de transport de personnes, notamment entre une barge et une plateforme pétrolière, comprenant un mât central (10) s'étendant axialement entre un pied (1 1 ) et une tête (12) de levage adaptée pour être reliée à une élingue (E) afin de déplacer la nacelle (1 ), et une pluralité de bras (2) s'étendant entre une extrémité de fixation (21 ) et une extrémité libre (22), l'extrémité de fixation (21 ) de chaque bras (2) étant montée de manière articulée sur le mât central (10) au niveau de son pied (1 1 ) entre une position de stockage dans laquelle chaque bras (2) s'étend sensiblement parallèlement au mât central (10), et une position d'utilisation dans laquelle chaque bras (2) s'étend sensiblement orthogonalement au mât central (10) de manière à former une base de support sur laquelle des personnes peuvent monter en position debout, le mât central (10) comprenant en outre, au niveau de sa tête (12), au moins un organe de préhension périphérique (14) adapté pour permettre aux personnes de s'agripper lors du déplacement. A nacelle (1) for transporting persons, in particular between a barge and a petroleum platform, comprising a central mast (10) extending axially between a foot (1 1) and a lifting head (12) adapted to be connected to a sling (E) for moving the platform (1), and a plurality of arms (2) extending between a fastening end (21) and a free end (22), the fastening end (21). of each arm (2) being hingedly mounted on the central mast (10) at its foot (1 1) between a storage position in which each arm (2) extends substantially parallel to the central mast (10) , and a use position in which each arm (2) extends substantially orthogonal to the central mast (10) so as to form a support base on which persons can ride in a standing position, the central mast (10) comprising in addition, at its head (12), at least one peripheral gripping member (14) adapted to allow people to grip during movement.
2. Nacelle (1 ) selon la revendication 1 , dans laquelle l'organe de préhension périphérique (14) définit une pluralité de poignées élémentaires. 2. Platform (1) according to claim 1, wherein the peripheral gripping member (14) defines a plurality of elementary handles.
3. Nacelle (1 ) selon l' une des revendications précédentes, dans laquelle la distance entre l'organe de préhension périphérique (14) et l'extrémité de liaison (21 ) des bras (2) est supérieure à la longueur d' un bras (2) . 3. The nacelle (1) according to one of the preceding claims, wherein the distance between the peripheral gripping member (14) and the connecting end (21) of the arms (2) is greater than the length of a arm (2).
4. Nacelle (1 ) selon l'une des revendications précédentes, comprenant au moins un filet monté entre la pluralité de bras (2) . 4. Nacelle (1) according to one of the preceding claims, comprising at least one thread mounted between the plurality of arms (2).
5. Nacelle ( 1 ) selon l'une des revendications précédentes, dans laquelle chaque bras (2) est relié à la tête (12) du mât central (10) par au moins un câble (31 , 32) configuré pour maintenir le bras (2) orthogonal au mât central ( 10) en position d' utilisation. 5. Nacelle (1) according to one of the preceding claims, wherein each arm (2) is connected to the head (12) of the central mast (10) by at least one cable (31, 32) configured to hold the arm (2) orthogonal to the central mast (10) in the position of use.
6. Nacelle (1 ) selon l' une des revendications précédentes, comprenant un organe de flottaison (7) adapté pour permettre à la nacelle (1 ) de flotter dans l'eau, de préférence, monté autour du mât central ( 10) . 6. Nacelle (1) according to one of the preceding claims, comprising a flotation member (7) adapted to allow the nacelle (1) to float in water, preferably mounted around the central mast (10).
7. Nacelle (1 ) selon la revendication précédente, dans laquelle l'organe de flottaison (7) s'étend de manière périphérique autour du mât central (10) et comporte une pluralité d'empreintes radiales (71 ) adaptées pour permettre le pliage des bras (2) en position de stockage. 7. Nacelle (1) according to the preceding claim, wherein the flotation member (7) extends peripherally around the central mast (10) and comprises a plurality of radial impressions (71) adapted to allow folding arms (2) in the storage position.
8. Nacelle (1 ) selon l'une des revendications précédentes, dans laquelle le mât central (10) comprend un organe de sécurisation (15) adapté pour permettre la sécurisation d'un harnais, l'organe de sécurisation (15) étant placé sous l'organe de préhension périphérique (14). 8. Nacelle (1) according to one of the preceding claims, wherein the central mast (10) comprises a securing member (15) adapted to allow securing of a harness, the security member (15) being placed under the peripheral gripping member (14).
9. Ensemble d'une nacelle (1 ) selon l'une des revendications précédentes et d'une élingue (E) reliée à la tête (12) de la nacelle (1 ), élingue (E) comprenant un câble longitudinal et des moyens élastiques reliant deux portions dudit câble longitudinal. 9. A set of a nacelle (1) according to one of the preceding claims and a sling (E) connected to the head (12) of the nacelle (1), sling (E) comprising a longitudinal cable and means resilient connecting two portions of said longitudinal cable.
10. Procédé d'utilisation d'une nacelle (1 ) selon l'une des revendications 1 à 8 pour le transport de personnes entre une barge et une plateforme pétrolière. 10. A method of using a nacelle (1) according to one of claims 1 to 8 for the transport of persons between a barge and a oil platform.
PCT/EP2018/076931 2017-11-10 2018-10-03 Pod for transporting people onto an oil platform WO2019091669A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1760572A FR3073514B1 (en) 2017-11-10 2017-11-10 NACELLE FOR TRANSPORTING PEOPLE ON AN OIL PLATFORM
FR1760572 2017-11-10

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WO2019091669A1 true WO2019091669A1 (en) 2019-05-16

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EP4101761A1 (en) 2021-06-08 2022-12-14 AIRBUS HELICOPTERS DEUTSCHLAND GmbH A modular load carrying apparatus with a carrier star
EP4101760A1 (en) 2021-06-08 2022-12-14 AIRBUS HELICOPTERS DEUTSCHLAND GmbH A modular load carrying apparatus with interchangeable platforms

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EP4101761A1 (en) 2021-06-08 2022-12-14 AIRBUS HELICOPTERS DEUTSCHLAND GmbH A modular load carrying apparatus with a carrier star
EP4101760A1 (en) 2021-06-08 2022-12-14 AIRBUS HELICOPTERS DEUTSCHLAND GmbH A modular load carrying apparatus with interchangeable platforms
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