EP0522059B1 - Dispositif de maintien et dispositif de liaison comportant un tel dispositif de maintien - Google Patents

Dispositif de maintien et dispositif de liaison comportant un tel dispositif de maintien Download PDF

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Publication number
EP0522059B1
EP0522059B1 EP91907577A EP91907577A EP0522059B1 EP 0522059 B1 EP0522059 B1 EP 0522059B1 EP 91907577 A EP91907577 A EP 91907577A EP 91907577 A EP91907577 A EP 91907577A EP 0522059 B1 EP0522059 B1 EP 0522059B1
Authority
EP
European Patent Office
Prior art keywords
arms
load
jaws
force
holding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP91907577A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0522059A1 (fr
Inventor
René Maloberti
Alain Coutarel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Technip Energies France SAS
Original Assignee
Coflexip SA
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 Coflexip SA filed Critical Coflexip SA
Publication of EP0522059A1 publication Critical patent/EP0522059A1/fr
Application granted granted Critical
Publication of EP0522059B1 publication Critical patent/EP0522059B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
    • B66C1/34—Crane hooks

Definitions

  • the invention relates mainly to a load retaining device as well as to a connecting device comprising such a retaining device.
  • ROV unmanned underwater vehicle
  • the device according to the present invention makes it possible to release very large retained charges.
  • the force allowing the retention device to be kept in the closed position is very low compared to the apparent weight of the load retained.
  • a weak force controls the closing of the load retaining means. This weak force is amplified by lever arms, so as to obtain a safe suspension of the load.
  • two elements are used, each carrying a jaw and an arm. The two elements are articulated around an axis. Means are used limiting the spacing of the two arms to ensure the closing of the jaws and consequently the retention of the suspended load.
  • a device for temporarily retaining a load on a retaining line comprising two articulated elements forming a clamp, each element comprising a jaw and an arm, the device comprising means for hooking to a retaining line and releasable means for limiting the spacing between the arms of said elements and being able to take two positions, a first closed position ensuring maintenance of the retained load and a second open position allowing the load to be released, the arms constituting means for amplifying the holding force f which is exerted between the two arms near their end to keep the jaws closed when the load is being held.
  • the releasable means of spacing the arm are constituted by mechanical or electromagnetic locking means which are actuated to allow the opening of the device and the release of the load.
  • this actuation alone is not sufficient to open the device, the opening being obtainable only once the device placed on a support surface, as explained with reference to FIG. 4 of this document.
  • the device according to the invention makes it possible to avoid this drawback by the fact that it is attached to the retaining line by only one of said articulated elements and that the releasable limiting means connect said arms by exerting said holding force f necessary for keep the first closed position of the jaws, the arms having a configuration such that the means for limiting the spacing of the arms are arranged laterally at a distance greater than 0.3 meters relative to the axis of the retaining line.
  • the device according to the present invention uses low forces to ensure the closing of the jaws and the locking of the arms, as well as to ensure the unlocking of the arms and therefore the opening of the jaws. These weak forces nevertheless make it possible to ensure the retention of loads whose apparent weight in water is very large.
  • the two arms are connected by a cable of small diameter.
  • a cable can be cut with a standard tool of low power, such as a cable cutter. Cutting the cable frees the arm and consequently the jaws, the opening of which allows the load to be released.
  • the cable cutter can be worn, in the case of underwater use of the suspension device according to the present invention, by an unmanned underwater vehicle.
  • an unmanned underwater vehicle Such a remote-controlled underwater vehicle cannot safely approach a flexible tubular pipe suspended vertically.
  • the minimum distance to be observed between the unmanned underwater vehicle and the flexible tubular pipe is greater than 0.3 meters, advantageously greater than or equal to 0.5 meters.
  • the arms support the means for limiting the spacing, preventing the opening of the load holding means.
  • the term lateral distance is understood to mean the average distance of the spacing limitation means such as a cable ensuring the maintenance of the arms in the closed position, relative to the vertical axis passing through the point of attachment of the load. This average distance corresponds for example to the position of the middle of the cable between the arms in the case where it is not arranged vertically. It is at this distance that the cable cutter of the underwater remote-controlled vehicle will intervene.
  • the arms are advantageously arranged horizontally or with a slight slope.
  • the device according to the present invention comprises means ensuring the opening of the jaws as soon as the arms are released. These means are for example constituted by the profile of the clamps, the mass of the arms, a counterweight or a spring separating the jaws.
  • the suspended load retaining device according to the present invention is particularly well suited for the connection mechanics of two flexible tubular conduits. It allows in particular the use of a flexible tubular pipe of small diameter for quickly depositing on the bottom, for example the seabed, a flexible tubular pipe of large diameter. Such a deposit may become necessary, for example in the event of an emergency interruption of laying operations on the seabed of flexible tubular conduits, for example in the event of a storm.
  • an unmanned underwater vehicle is sent equipped with a cable cutter which cuts the small diameter cable connecting the arms. This opens the jaws of the suspension device according to the present invention.
  • a possible hydraulic connection between two flexible tubular pipes is broken by the weight of the flexible tubular pipe of large diameter or by the pulling up force of the flexible tubular pipe of small diameter.
  • the force f control ensuring that the closed position is maintained is between 1000 N and 50,000 N.
  • FIGS. 1 to 8 the same references have been used to designate the same elements.
  • the device advantageously made of steel, mainly comprises two parts, 1 and 2, articulated around an axis 35.
  • the part 1 comprises a jaw 11, a vertical connecting element 13 and a lever arm 12.
  • the part 2 comprises a jaw 21 and a lever arm 22.
  • the suspension device comprises means 30 preventing the arms 12 and 22 from moving apart.
  • the force required to hold the lever arms 12 and 22, and consequently the jaws 11 and 21, is low. It is for example provided by a small diameter steel cable.
  • small diameter is meant steel cables which can be cut by a conventional cable cutter carried by an unmanned underwater vehicle. Such cables necessarily have a diameter of less than 1.5 inches which is usable for a tensile load of 15 tonnes taking into account the safety factors.
  • the holding force is very high and adapted to the load to be supported and for example equal to 20, 100, 250 or 1000 tonnes.
  • the arrow 34 illustrates the force exerted by the load retained.
  • the present invention is not limited to the suspension of charges. It allows the transmission of pulling forces, in particular in the case of towing, anchoring or positive buoyancy forces.
  • the orientation of the force is not necessarily vertical, but may be oblique, for example in the case of a tensile force on an anchor or else in the case of forces exerted on a towed object.
  • the device according to the present invention comprises means allowing its suspension.
  • the upper end of the vertical part 13 has an opening through which penetrates a horizontal axis 14 ensuring the maintenance of a chappe 31.
  • On the chappe 31 is fixed a cable 32.
  • the chappe 31, fixed to the end of the clamp 13, is advantageously mounted, pivoting, around the axis 14.
  • the lever 22 pivots about the axis 35, along arrow 36, under the action of its weight as well as the force 34 exerted on the jaw 21.
  • the opening of the jaw 21 provides a space 39 which allows the passage of a fitting element 33 which supports the weight of the load.
  • the invention is not limited to the use of a small diameter cable for holding the lever arms 12 and 22.
  • a remotely controllable holding device 37 is illustrated, for example by a signal hydraulic, acoustic or electric.
  • the means for conveying the control signal have not been shown in the figure.
  • the remote control signals come from a floating support located on the surface.
  • the remote control signals are sent by an unmanned underwater vehicle.
  • the control device 37 comprises for example a jack allowing the spacing or the bringing together of the lever arms 12 and 22.
  • the control element 37 can be separated into two elements 15 and 25 integral with the lever arms 12 and 22 respectively.
  • the elements 15 and 25 comprise for example electromagnets. In the absence of current, the elements 15 and 25 separate along a dividing line 38.
  • FIG. 4 illustrates a variant of the device according to the present invention with automatic opening of the jaws.
  • FIG. 4 illustrates the choice of the geometry of the suspension device according to the present invention to adapt it to the desired load. It is of course necessary to also adapt the section of the various elements according to the materials used, so as to ensure their resistance to the forces involved.
  • F1, and F'1 are the components of the force F according to the norms on the surfaces in contact with the jaws and the member 33.
  • the points of application of the holding force at the ends of the arms 12 and 22 bear the reference 16 and 26.
  • the points 16 and 26 are at the same distance L from the axis of the retaining line.
  • the force F is equal to the apparent weight in the water of the load.
  • the member 33 has two points of contact 33a and 33b with the internal profile of a jaw of the clamp.
  • the axis 35 of rotation is located at the same distance L from the axes supporting the vectors F1 and F'1
  • f.L is at least equal to F1.1.
  • the invention is not limited to an embodiment symmetrical with respect to the 'axis of the restraint line for which F'1, F1 have the same amplitude.
  • the torque exerted by the holding force must be at least equal to the opening torque exerted by F1 and F'1 to ensure the closing of the jaws.
  • this distance L makes it possible to increase the horizontal extension in relation to the flexible pipe, and consequently facilitates the work of the remote-controlled underwater vehicle.
  • FIG. 5 we can see an example of a connecting device between two flexible tubular conduits 41 and 43 using a suspension device according to the present invention.
  • the upper flexible tubular pipe 41 is terminated by a nozzle 40.
  • the flexible tubular pipe 43 is terminated by a nozzle 42.
  • the flexible tubular pipes 41 and 43 are hydraulically connected by a pipe 44.
  • the pipe 44 is not capable of supporting the weight of the flexible tubular pipe 43; suspension of driving flexible tubular 43 is provided by a suspension device according to the present invention.
  • the configuration of the jaws 11, 21 having stops is in no way limiting.
  • the closing of the jaws of these devices is limited by the diameter of the fitting accessory 33 gripped between the jaws 11 and 21.
  • the arm 22 is lowered according to arrow 36.
  • FIG. 8 a particularly efficient variant of the device according to the present invention can be seen.
  • the arms 12 and 22 are connected by mechanical connections 41 and 42.
  • the mechanical connections 41 and 42 include mechanical locking means.
  • the mechanical locking means comprise an omega-shaped part secured to the part 42 and penetrating the part 41.
  • elements of complementary shape belonging to the part 41 cover, in the closed position, the faces of the part 43. In this closed position, the part 43 as well as the said faces of the part 41 have an opening. This opening is crossed by a pin 44 ensuring the locking.
  • an actuator 45 (actuator in English terminology) allows the withdrawal of the pin 44, and consequently the opening of the arms 12 and 22.
  • the actuator 45 is for example electromagnetic or hydraulic.
  • the arrow 47 symbolizes the movement of the pin 44 under the action of the actuator 45. It is understood that an actuator capable only of removing the pin 44 does not depart from the scope of the present invention.
  • the device of FIG. 8 comprises a receiver 46, remote control signals 48 allowing the actuator 45 to be controlled.
  • the receiver 46 receives acoustic waves 48.
  • the acoustic waves 48 for opening the jaws and therefore for releasing the load are emitted from a floating support or from an unmanned underwater vehicle.
  • the present invention applies mainly to the rapid installation and abandonment of a flexible tubular pipe on the seabed.
  • a method implementing the device according to the present invention is described in a French patent application filed by the applicant simultaneously with the present application and entitled "Flexible tubular abandonment pipe, device and method using such a pipe”.
  • the present invention also applies to the dropping, for example from the bottom, of surface or sub-surface buoys.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Earth Drilling (AREA)
  • Manipulator (AREA)
  • Supports For Pipes And Cables (AREA)
EP91907577A 1990-03-30 1991-04-02 Dispositif de maintien et dispositif de liaison comportant un tel dispositif de maintien Expired - Lifetime EP0522059B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9004101 1990-03-30
FR9004101A FR2660297B1 (fr) 1990-03-30 1990-03-30 Dispositif de suspension et dispositif de liaison comportant un tel dispositif de suspension.
PCT/FR1991/000259 WO1991015421A1 (fr) 1990-03-30 1991-04-02 Dispositif de maintien et dispositif de liaison comportant un tel dispositif de maintien

Publications (2)

Publication Number Publication Date
EP0522059A1 EP0522059A1 (fr) 1993-01-13
EP0522059B1 true EP0522059B1 (fr) 1994-11-02

Family

ID=9395294

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91907577A Expired - Lifetime EP0522059B1 (fr) 1990-03-30 1991-04-02 Dispositif de maintien et dispositif de liaison comportant un tel dispositif de maintien

Country Status (11)

Country Link
US (1) US5356188A (pt)
EP (1) EP0522059B1 (pt)
AU (1) AU649037B2 (pt)
BR (1) BR9106297A (pt)
CA (1) CA2079460A1 (pt)
DE (1) DE69104982D1 (pt)
DK (1) DK0522059T3 (pt)
ES (1) ES2064100T3 (pt)
FR (1) FR2660297B1 (pt)
NO (1) NO923759L (pt)
WO (1) WO1991015421A1 (pt)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL98639A0 (en) * 1990-06-28 1992-07-15 Glaxo Inc Aerosol drug formulations
SE503866C2 (sv) * 1994-10-14 1996-09-23 Atlas Copco Tools Ab Upphängningsanordning för universiellt rörligt stöd av ett pneumatiskt kraftverktyg
US7874096B2 (en) * 2006-11-13 2011-01-25 Patrick Michael Callaway Fish releasing device
CN115744643B (zh) * 2022-09-27 2023-05-30 山东德鲁克起重机集团有限公司 一种自动化双梁桥式机械手起重机及其使用方法

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE122822C (pt) *
US1435634A (en) * 1920-12-18 1922-11-14 Frederick A Foxhall Grip
US1524699A (en) * 1924-08-13 1925-02-03 Faber Franz Safety clamp
US2024222A (en) * 1933-09-11 1935-12-17 Harvey S Hinchman Toggle release hook
US2300372A (en) * 1942-03-07 1942-10-27 Carnegie Illinois Steel Corp Grasping hook or device for cranes and the like
US3104125A (en) * 1960-03-28 1963-09-17 Garlinghouse Brothers Gas actuated power device
US3107938A (en) * 1961-12-04 1963-10-22 George B Schick Pressure sensitive release mechanism
US3640555A (en) * 1969-10-24 1972-02-08 Bullard Co Connector for handtool suspension system
FR2192971B1 (pt) * 1972-07-19 1976-02-13 Nickel Le
US3904235A (en) * 1974-01-08 1975-09-09 George V Fehr eighted clamp for handling buoyant materials under water
US3873145A (en) * 1974-02-21 1975-03-25 Us Navy Cable grapple
US4717189A (en) * 1986-03-31 1988-01-05 Gabriel Edwin Z Tong-like, cable-scooping, hoist-cable coupling device for suspended loads
FR2607606B1 (fr) * 1986-11-28 1991-11-29 Thomson Csf Manille a liberation automatique

Also Published As

Publication number Publication date
NO923759D0 (no) 1992-09-28
FR2660297A1 (fr) 1991-10-04
CA2079460A1 (fr) 1991-10-01
FR2660297B1 (fr) 1992-06-12
DE69104982D1 (de) 1994-12-08
AU649037B2 (en) 1994-05-12
AU7666691A (en) 1991-10-30
ES2064100T3 (es) 1995-01-16
US5356188A (en) 1994-10-18
WO1991015421A1 (fr) 1991-10-17
EP0522059A1 (fr) 1993-01-13
NO923759L (no) 1992-11-30
DK0522059T3 (da) 1995-04-18
BR9106297A (pt) 1993-04-13

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