WO1991015421A1 - 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 PDFInfo
- Publication number
- WO1991015421A1 WO1991015421A1 PCT/FR1991/000259 FR9100259W WO9115421A1 WO 1991015421 A1 WO1991015421 A1 WO 1991015421A1 FR 9100259 W FR9100259 W FR 9100259W WO 9115421 A1 WO9115421 A1 WO 9115421A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- arms
- load
- jaws
- force
- lever arms
- Prior art date
Links
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 holding device as well as to a connecting device comprising such a holding 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 holding device to be kept in the closed position is very low relative to the apparent weight of the load retained.
- a weak force controls the closure of the load holding 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 a lever arm. The two elements are articulated around an axis. Means are used limiting the spacing of the two lever arms to ensure femieture of the jaws and consequently the suspension of the load.
- 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. On the other hand, these weak forces make it possible to maintain the loads whose apparent weight in the water is very important.
- the two lever 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 lever 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. 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 for example between 0.3 and 0.5 meters.
- the device according to the present invention has a lateral distance greater than 0.3 meters, advantageously greater than or equal to 0.5 meters.
- the lever arms support the control means preventing the opening of the load holding means.
- This lateral distance is advantageously obtained by the length of the lever arms.
- the term lateral distance is understood to mean the average distance of the cable ensuring the maintenance of the lever arms in the closed position relative to the vertical axis passing through the load fixing point. This average distance corresponds for example to the position of the middle of the cable between the lever 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 lever 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 lever arms are released. These means are for example constituted by the profile of the clamps, the mass of the lever arms, a counterweight or a spring separating the jaws.
- the suspension device according to the present invention is particularly well suited for the mechanical coupling of two flexible tubular conduits. It allows in particular the use 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 the 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 lever arm. 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. large diameter or by the pulling up force of the small diameter flexible tubular pipe.
- the main object of the present invention is a device for temporarily holding a load on a restraining line comprising two articulated elements forming a clamp, each element comprising a jaw and an arm, one of the two arms comprising hooking means.
- a retaining line the device being able to take two positions, a first closed position ensuring the maintenance of the retained load and a second open position allowing the release of the load;
- the arm constituting means for amplifying the holding force f which is exerted between the two arms in the vicinity of their end to keep the jaws closed when the load is maintained, characterized in that it comprises releasable means of limitation of the spacing connecting said arms by exerting said holding force f necessary to keep the first closed position of the jaws, the arms having a configuration such that the means for limiting the spacing of the lever arms are arranged laterally at a distance greater than 0.3 meters from the axis of the restraint line.
- the present invention also relates to a device, characterized in that the force exerted by the suspended mass can be between 100,000 N and 5,000,000 N and that the force of control ensuring that the closed position is maintained is between 1000 N and 50,000 K.
- FIG. 1 is a side view of an exemplary embodiment of the suspension device according to the present invention, in the closed position;
- FIG. 2 is a side view of a suspension device according to the present invention, in the open position
- FIG. 3 is a side view of an exemplary embodiment of the suspension device according to the present invention comprising active control means;
- FIG. 4 is an explanatory diagram of the operation of the device according to the present invention.
- FIG. 5 is a side view of a connecting device according to the present invention.
- FIG. 6 is a side view of an alternative embodiment of the device according to the present invention in which the upper arm is raised when the load is released;
- FIG. 7 is a side view of an embodiment of the device according to the present invention not comprising a stop
- FIG. 8 is a schematic view of an embodiment of the device according to the present invention comprising mechanical locking means ensuring the closed position of the arms.
- FIGS. 1 to 8 the same references have been used to designate the same elements.
- the device advantageously made of steel, mainly comprises two pipes, 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 lever arms 12 and 22 are substantially parallel.
- the length of the lever arms 12 and 22 and the jaw profile will determine the ratio between the force retaining the load and the force ensuring that the jaws are kept in a closed position.
- the suspension device according to the present invention comprises means 30 preventing the arms 12 and 22 from moving apart. The force required to maintain the lever arms 12 and 22, and consequently the jaws 11 and 21, is low.
- small diameter steel cable By 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. It is understood that the use of cables or wire with a much smaller diameter, for example 1 Iran, does not depart from the scope of the present invention.
- 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 one. opening through which penetrates a horizontal axis bed 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 'bed axis. If the cable 30 is cut, as illustrated in FIG. 2, the lever 22 pivots about the axis 35, according to the 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.
- F 1 , 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 F 1 and F' 1
- fL is at least equal to F 1 .1.
- the invention is not limited to an embodiment symmetrical with respect to the 'axis of the retaining line for which F' 1 , F 1 have the same amplitude.
- the torque exerted by the holding force must be at least equal to the opening torque exerted by F and F '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 a piece in the shape of an omega secured to the piece 42 and penetrating the piece 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)
- Supports For Pipes And Cables (AREA)
- Manipulator (AREA)
- Earth Drilling (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/927,295 US5356188A (en) | 1990-03-30 | 1991-04-02 | Device for temporarily holding a load on a holding line |
BR919106297A BR9106297A (pt) | 1990-03-30 | 1991-04-02 | Dispositivo de manutencao e dispositivo de ligacao comportando esse dispositivo de manutencao |
EP91907577A EP0522059B1 (fr) | 1990-03-30 | 1991-04-02 | Dispositif de maintien et dispositif de liaison comportant un tel dispositif de maintien |
DE69104982T DE69104982D1 (de) | 1990-03-30 | 1991-04-02 | Haltevorrichtung und verbindungsvorrichtung, die mit dieser haltevorrichtung ausgerüstet ist. |
AU76666/91A AU649037B2 (en) | 1990-03-30 | 1991-04-02 | Holding tool for facilitating connection of underwater cables |
NO92923759A NO923759L (no) | 1990-03-30 | 1992-09-28 | Anordning for fastholdelse av en last og en forbindelsesanordning som omfatter en slik fastholdelsesanordning |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9004101A FR2660297B1 (fr) | 1990-03-30 | 1990-03-30 | Dispositif de suspension et dispositif de liaison comportant un tel dispositif de suspension. |
FR90/04101 | 1990-03-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1991015421A1 true WO1991015421A1 (fr) | 1991-10-17 |
Family
ID=9395294
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1991/000259 WO1991015421A1 (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 (fr) |
EP (1) | EP0522059B1 (fr) |
AU (1) | AU649037B2 (fr) |
BR (1) | BR9106297A (fr) |
CA (1) | CA2079460A1 (fr) |
DE (1) | DE69104982D1 (fr) |
DK (1) | DK0522059T3 (fr) |
ES (1) | ES2064100T3 (fr) |
FR (1) | FR2660297B1 (fr) |
NO (1) | NO923759L (fr) |
WO (1) | WO1991015421A1 (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3056784B2 (ja) * | 1990-06-28 | 2000-06-26 | グラクソ、インコーポレーテッド | エアゾール医薬製剤 |
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 |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE122822C (fr) * | ||||
US1524699A (en) * | 1924-08-13 | 1925-02-03 | Faber Franz | Safety clamp |
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 |
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 |
FR2607606A1 (fr) * | 1986-11-28 | 1988-06-03 | Thomson Csf | Manille a liberation automatique |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1435634A (en) * | 1920-12-18 | 1922-11-14 | Frederick A Foxhall | Grip |
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 |
FR2192971B1 (fr) * | 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 |
-
1990
- 1990-03-30 FR FR9004101A patent/FR2660297B1/fr not_active Expired - Lifetime
-
1991
- 1991-04-02 AU AU76666/91A patent/AU649037B2/en not_active Ceased
- 1991-04-02 WO PCT/FR1991/000259 patent/WO1991015421A1/fr active IP Right Grant
- 1991-04-02 DK DK91907577.0T patent/DK0522059T3/da active
- 1991-04-02 ES ES91907577T patent/ES2064100T3/es not_active Expired - Lifetime
- 1991-04-02 EP EP91907577A patent/EP0522059B1/fr not_active Expired - Lifetime
- 1991-04-02 DE DE69104982T patent/DE69104982D1/de not_active Expired - Lifetime
- 1991-04-02 US US07/927,295 patent/US5356188A/en not_active Expired - Fee Related
- 1991-04-02 CA CA002079460A patent/CA2079460A1/fr not_active Abandoned
- 1991-04-02 BR BR919106297A patent/BR9106297A/pt not_active Application Discontinuation
-
1992
- 1992-09-28 NO NO92923759A patent/NO923759L/no unknown
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE122822C (fr) * | ||||
US1524699A (en) * | 1924-08-13 | 1925-02-03 | Faber Franz | Safety clamp |
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 |
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 |
FR2607606A1 (fr) * | 1986-11-28 | 1988-06-03 | Thomson Csf | Manille a liberation automatique |
Also Published As
Publication number | Publication date |
---|---|
NO923759L (no) | 1992-11-30 |
DK0522059T3 (da) | 1995-04-18 |
AU7666691A (en) | 1991-10-30 |
EP0522059A1 (fr) | 1993-01-13 |
AU649037B2 (en) | 1994-05-12 |
US5356188A (en) | 1994-10-18 |
BR9106297A (pt) | 1993-04-13 |
FR2660297A1 (fr) | 1991-10-04 |
EP0522059B1 (fr) | 1994-11-02 |
ES2064100T3 (es) | 1995-01-16 |
FR2660297B1 (fr) | 1992-06-12 |
NO923759D0 (no) | 1992-09-28 |
DE69104982D1 (de) | 1994-12-08 |
CA2079460A1 (fr) | 1991-10-01 |
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