EP0085090B1 - Ancre - Google Patents

Ancre Download PDF

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Publication number
EP0085090B1
EP0085090B1 EP19820902512 EP82902512A EP0085090B1 EP 0085090 B1 EP0085090 B1 EP 0085090B1 EP 19820902512 EP19820902512 EP 19820902512 EP 82902512 A EP82902512 A EP 82902512A EP 0085090 B1 EP0085090 B1 EP 0085090B1
Authority
EP
European Patent Office
Prior art keywords
standard
anchor
fluke
anchor according
movement
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
Application number
EP19820902512
Other languages
German (de)
English (en)
Other versions
EP0085090A4 (fr
EP0085090A1 (fr
Inventor
Victor L. Phillips
Peter J. Fornasiero
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.)
Vlp Investments Ltd Te Hamilton Canada
Original Assignee
VLP INVESTMENTS
VLP INVESTMENTS Ltd
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 VLP INVESTMENTS, VLP INVESTMENTS Ltd filed Critical VLP INVESTMENTS
Publication of EP0085090A1 publication Critical patent/EP0085090A1/fr
Publication of EP0085090A4 publication Critical patent/EP0085090A4/fr
Application granted granted Critical
Publication of EP0085090B1 publication Critical patent/EP0085090B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
    • B63B21/22—Handling or lashing of anchors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
    • B63B21/24—Anchors
    • B63B21/38—Anchors pivoting when in use
    • B63B21/44—Anchors pivoting when in use with two or more flukes

Definitions

  • the present invention relates to anchors used to locate waterborne vessels relative to the ground.
  • an anchor to secure a vessel in position to resist movement of the vessel under the influence of currents and wind.
  • Such anchors are usually attached to the vessel by means of a flexible rope, cable or chain and are provided with flukes which engage the bed to resist movement of the vessel.
  • the flukes are usually configured so that the application of the force through the cable will cause the fluke to penetrate the bed and securely hold the vessel.
  • an anchor having a standard for connection to a flexible fastening device and a fluke assembly pivotally connected to said standard for movement about a pivot axis, said fluke having a leading edge for engagement with and penetration of a surface to which said anchor is to be secured, said fluke assembly including sprag means at a location spaced from said leading edge to oppose movement to extract said fluke assembly from said surface whereby upon application of a force by said fastening means to withdraw said leading edge from said surface, said sprag means engages said surface and rotates said fluke assembly relative to said standard to a position in which continued application of said force causes said leading edge to penetrate said surface.
  • Stop means are provided to limit pivotal movement about said axis, said stop means being yieldable and releasing upon application of said force in said direction to withdraw said leading edge to permit said standard to pivot to a position substantially aligned with the direction of said force to enable withdrawal of said fluke.
  • the sprag means enables the standard to be pivotally connected to the fluke in a manner that permits it to be aligned with the fluke to enable withdrawal from the sea bed. Should the withdrawal of the fluke be accidental, for example be caused by a change in wind or current, then the sprag will engage the sea bed and reset the anchor to resecure the vessel.
  • the releasable stop means facilitates setting of the anchor in the conventional manner but does not inhibit the release or resetting of the anchor when necessary.
  • a cam track 56 is formed on the inner surface 54.
  • the cam track 56 is of constant curvature and is eccentric to the axis of rotation between the block member 38 and the links 26, 28 defined by the stud 36 and the bores 34.
  • the inner surface 54 is also provided with a keyhole shaped recess 58 comprising a circular portion 60 and a generally rectangular portion 62.
  • the circular portion 60 is centred on the rotational axis between the block member 38 and the links 26, 28 and accommodates an elastomeric block 64.
  • the block 64 includes a projecting portion 66 which is accommodated in the rectangular portion 62 and is retained by means of cooperating shoulders 68 provided on the rectangular portion 62 and the projecting portion 66.
  • the block 64 is shaped so that its end surface 70 is flush with the walls defining the cam track 56.
  • Each of the flukes 14, 16 has an end surface 82 from which the pin 20 projects.
  • the end surface 82 is generally diamond shape with the pin 20 positioned at its point of maximum width.
  • the end surface 82 is formed with a pair of kidney shaped protuberances 84, 86 which partially encompass the boss 30.
  • Each protuberance is defined by inner and outer curved surfaces 88, 90 respectively which smoothly merge at one extreme and are interconnected by an abutment surface 92 at the other extreme.
  • the abutment surface 92 is positioned so that the pin 78 engages it when the slave link 80 is at one extreme of its travel but is lifted clear of the abutment surface when the slave link is at the other end of its travel.
  • the end surface 82 of the fluke 16,18 merges at one end with a leading edge 94 of the fluke. This edge is chamfered to provide a penetrating edge of the generally planar body of the fluke.
  • the opposite end of the end surface 82 merges with a pair of flared ribs 96, 98 interconnected by a wall 100 upon which the stop member 22 is mounted.
  • the ribs 96 diverge from the general plane of the fluke 16, 18 and define a sprag member engageable with the surface in which the anchor is to be embedded.
  • the slave link 80 and block member 38 are positioned between the links 26, 28 with the pins 76, 78 located in the slots 72, 74 respectively and the studs 36 are positioned in the bores 34.
  • the annular elastomeric ring 64 is positioned within the circular recess 60 of each ear 46 and the slug 66 positioned in the rectangular portion 62.
  • the ears 46 are placed over the cheeks 44 with the ends of the pins 76 located within the cam track 56 and the rivets 48 driven through the holes 50, 52 and peened to secure the ears to the block member.
  • the pin 20 is then fastened in the fluke 16 and passed through the bores 30 and bosses 32 into the fluke 18.
  • the fastener 24 is also passed through the stop members 22 and the pin 20 and fastener 24 secured against axial movement by suitable fasteners.
  • the flukes 16, 18 are then secured to one another for conjoint movement about the pin 20.
  • the ends of the pins 78 are located adjacent the end surface 82 and between the abutment surfaces 92 of the protuberances 84.
  • the cable 42 is attached to the clevis 40 and the anchor 10 lowered to the surface to which the vessel is to be secured.
  • the standard 12 is free to pivot on the pin 20 over a range of movement determined by the spacing of the abutment surfaces 92.
  • the leading edge 94 is positioned to penetrate the surface.
  • the application of a force through the cable 42 causes the standard to rotate on the pin 20 until the pin 76 abuts the end surface 92. Further application of a force from the cable in the general direction of extension of the standard will force the leading edge 94 into the surface until it is firmly imbedded and resist movement of the vessel.
  • the links 26, 28 may rotate on the pin through an angle denoted A.
  • the block member 38 may rotate about the studs 36 through an angle B without moving the pin 78 at an engagement with the end surface 92. This movement accommodates the swell an tidal movements normally associated with a vessel at anchor.
  • the block member pivots about the links 36 on the axis defined by the studs 36 and carries the ears 46 with it.
  • the pin 76 which is captive within the slot 72 moves along the cam track 56 and, by virtue of the eccentricity of the cam track 56 is moved axially along the slot 72. This axial movement is sufficient to lift the pin 78 out of engagement with the end surface 92 and allows the links 26, 28 to rotate about the pin 20 until they abut the stop member 22. As this occurs, the block member reverses its rotation on the stud 36.
  • Such movement along the surface is opposed by the ribs 96 which, because of the configuration of the fluke assembly, are positioned at a greater angle of attack when the fluke assembly is extracted from the surface.
  • the ribs 96 therefore dig into the surface along which the anchor is being drawn and tend to rotate the fluke assembly about the pin 20 relative to the standard 12.
  • the pin 78 rides along the outer curved surface to axially displace the slave link 80 relative to the links 26, 28. This displacement is accommodated by compression of the elastomeric block 64.
  • the pin 78 reaches the abutment surface 92 and the elastomeric block biases the slave link 80 back to a position in which the pin 76 is aligned with the cam track 56.
  • the block member 38 is then free to rotate relative to the links 26, 28 and the cable continues to pull the anchor 12 until the fluke assembly passes its balance point and falls into abutment with the surface.
  • the pin 78 is once again in a position to limit movement of the fluke assembly relative to the standard 12 so that continued movement of the fluke assembly along the surface causes the leading edge 94 to penetrate the surface and provide a secure location for the anchor 10.
  • the anchor assembly operates to reset itself upon a reverse of direction of the applied load to the anchor and also enables the vessel to be maneuvered to a position which facilitates removal of the anchor should it be caught on an under water object.
  • the use of the releasable stop means constituted by the cam track 56, the slave link 80 and the pin 78 operating with the abutment surface 92 ensures that the anchor will operate in a normal manner to provide adequate penetration of the surface.
  • slave link 80 may be pivoted directly to the block member 38 rather than constrained from movement within the links 26, 28 by the slot 72 while such an arrangement is possible, the construction illustrated is preferred to inhibit the possibility of debris entering between the slave link and the links 26, 28 as the block member rotates and thereby holding the anchor in the unlatched position.
  • the generally bulbous nature of the fluke assembly adjacent the pin 20 assists not only in setting the leading edge 94 at the correct angle of attack, but also assists in increase in the angle attack of the sprag members defined by the ribs 96.
  • FIG. 8 A suitable storage arrangement is shown in Figure 8 where the anchor 10 is accommodated in a housing 110.
  • the housing 110 is delimited by generally rhombic shaped upstanding wall 112 with a pair of flaps 114 extending from the wall 122 toward the centre of the housing 110.
  • a pair of spaced parallel walls 116 terminate the flaps 114 and provide a channel into which the standard of the anchor may be placed.
  • a track 118 is cut into each of the walls 116 and comprises a straight portion 120 and a curved portion 122.
  • Each of the ears 46 is provided with a stud 124 displaced from the axis of rotation of the block member relative to the links.
  • the block member 38 is rotated to a position generally 90° to the links 26, 28 to release the standard from the fluke assembly.
  • the leading edges 94 the fluke are then placed beneath the flaps 114 with the ribs 96 supported on the wall 112.
  • a square stud 126 projects through an aperture between the stop member 22 and the pin 20 to accommodate a linch pin or similar device to hold the flukes in position.
  • the stud 124 is then positioned adjacent the straight portion 120 and the links 26, 28 pivoted about the pin until the stud 124 is at the junction of straight and curved portions 121, 122.
  • the block member 38 is then rotated so that the stud 124 passes down the curved portion 122 until the block member and links are aligned.
  • the anchor 10 is therefore held firmly within the housing 110 with the leading edge 94 of the flukes protected beneath the flaps 114. Release of the anchor is relatively simple, merely requiring the rotation of the block member to release the stud from the curved portion and then rotation of the links about the pin 20.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Piles And Underground Anchors (AREA)

Claims (11)

1. Ancre (10) comprenant une verge (12), un ensemble de pattes (14) relié de façon pivotante à une extrémité de la verge (12) pour un mouvement autour d'un axe perpendiculaire à l'axe longitudinal de la verge (12), les pattes présentant un bord d'attaque (94) pour l'engagement et la pénétration dans une surface à laquelle l'ancre doit être fixée, et des moyens d'arrêt comportant une paire d'éléments de butée opposés (78, 92) qui agissent entre la verge et l'ensemble de pattes pour limiter le mouvement relatif entre ces parties, un organeau (38) monté de façon pivotante à une extrémité de la verge (12) pour un mouvement libre autour d'un axe parallèle à l'axe de pivotement de l'ensemble de pattes (14), et des moyens de verrouillage comportant un élément de came (46) manoeuvrable par ledit organeau (38) pour déplacer l'un desdits éléments de butée (78) par rapport à l'autre (92) afin de rendre inactifs lesdits moyens d'arrêt lorsque l'organeau est sollicité par une force dans une direction prédéterminée, ce qui permet un mouvement de ladite verge (12) par rapport à l'ensemble de pattes, d'une position d'ancrage à une position d'extraction pour l'extraction dudit bord d'attaque (94) par ladite force, caractérisée en ce que ledit ensemble de pattes comporte un élément d'appui (96) longitudinalement espacé dudit bord d'attaque (94) pour s'opposer au mouvement d'extraction du bord d'attaque de ladite surface, une course morte étant prévue entre un palpeur (76) et ledit élément de came (46), l'agencement étant tel qu'une force maintenue sur l'organeau (38) dans ladite direction prédéterminée, après ladite extraction du bord d'attaque, provoque l'engagement dudit élément de calage (96) avec ladite surface à laquelle l'ancre doit être fixée, ce qui fait tourner l'ensemble de pattes (14) par rapport à la verge (12) et ramène la verge à une position d'ancrage dans laquelle l'ancre peut se refixer, ladite rotation de l'ensemble de pattes provoquant un mouvement relatif du palpeur (76) et de l'élément de came (46) comme permis par ladite course morte 62.
2. Ancre suivant la revendication 1, caractérisée en ce que ladite course morte comprend une partie évidée (62) dans la surface de came (56) dudit élément de came (46).
3. Ancre suivant la revendication 2, caractérisée en ce que ladite partie évidée (62) est située de manière à permettre l'exécution de ladite course morte seulement dans une position définie dudit organeau (38) par rapport à ladite verge (12), ladite position définie étant la position obtenue pendant ladite extraction du bord d'attaque (94).
4. Ancre suivant la revendication 3, caractérisée par des moyens élastiques (64, 66) prévus dans ladite partie évidée (62) de manière à résister élastiquement à l'entrée d'un palpeur de came (76) dans cette partie.
5. Ancre suivant l'une quelconque des revendications 2 à 4, caractérisée en ce que ladite surface de came comprend un guidage courbe (56) et ladite partie évidée (62) s'étend radialement à partir de ce guidage.
6. Ancre suivant l'une quelconque des revendications précédentes, caractérisée par un support de palpeur allongé (80) s'étendant le long de ladite verge (12) et portant ledit palpeur (76) à une extrémité, ledit élément de butée (78) étant formé à son autre extrémité.
7. Ancre suivant la revendication 6, caractérisée en ce que ladite course morte permet un mouvement dudit support de palpeur (80) le long de l'axe longitudinal de ladite verge (12).
8. Ancre suivant l'une quelconque des revendications précédentes, caractérisée en ce que lesdits moyens de verrouillage comprennent deux oreilles tombantes (46) placées de part et d'autre dudit organeau (38) et comportant chacune un chemin de came en arc de cercle (56), ledit support de palpeur portant des palpeurs de came (76) qui traversent dans des directions opposées ladite verge (12) et s'engagent dans un chemin respectif desdits chemins de came (56).
9. Ancre suivant la revendication 8, dans laquelle ledit ensemble de pattes (14) comporte deux surfaces opposées (82) entre lesquelles passe ladite verge (12), chacune desdites surfaces (82) comportant une configuration (84, 86) qui définit l'autre desdits éléments de butée.
10. Ancre suivant la revendication 9, caractérisée en ce que la surface radialement extérieure de chacune desdites configurations (84, 86) diminue de rayon en s'éloignant dudit élément de butée, pour permettre un mouvement pivotant dudit organeau.
11. Ancre suivant l'une quelconque des revendications précédentes, caractérisée en ce que ladite cale (96) s'étend sur des côtés opposés dudit ensemble de pattes (14).
EP19820902512 1981-07-10 1982-07-12 Ancre Expired EP0085090B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US381520 1981-07-10
CA000381520A CA1187345A (fr) 1981-07-10 1981-07-10 Ancre

Publications (3)

Publication Number Publication Date
EP0085090A1 EP0085090A1 (fr) 1983-08-10
EP0085090A4 EP0085090A4 (fr) 1984-10-29
EP0085090B1 true EP0085090B1 (fr) 1989-05-17

Family

ID=4120413

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19820902512 Expired EP0085090B1 (fr) 1981-07-10 1982-07-12 Ancre

Country Status (4)

Country Link
EP (1) EP0085090B1 (fr)
JP (1) JPS58501903A (fr)
CA (1) CA1187345A (fr)
WO (1) WO1983000126A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19635688C1 (de) * 1996-09-03 1998-04-09 Wilhelm Roesch Anker mit Festhalten von Wasserfahrzeugen

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL192337C (nl) * 1986-01-21 1997-06-04 Neddrill Nederland B V Anker met ophefbare aanslag voor de schacht.
AU594800B2 (en) * 1986-07-31 1990-03-15 Dulmison Marine Pty. Ltd. Improved anchor
US4926779A (en) * 1988-12-14 1990-05-22 Claude Piton Marine anchor equipped with anchor weighing means
FR2644748A1 (fr) * 1989-03-21 1990-09-28 Ducloux Jean Ancre a pattes debrayables pour bateau
JPH04266586A (ja) * 1991-02-22 1992-09-22 Koken Kk 錨
US5095842A (en) * 1991-09-30 1992-03-17 Soules Jack A Collapsible anchor having releasable flukes
JP4507217B1 (ja) * 2009-07-31 2010-07-21 善成 住福 船用アンカー
GB2522196B (en) * 2014-01-15 2016-02-10 Fe Anchor Corp Anchor with shank retaining fastener
WO2016141317A1 (fr) * 2015-03-05 2016-09-09 Board Of Regents, The University Of Texas System Ancre à auto-installation
GR1009442B (el) * 2017-12-18 2019-01-23 Αθανασιος Κωνσταντινου Ζηλιασκοπουλος Αγκυρα σκαφους με αυτορυθμιζομενη γωνια στελεχους/πτερυγιων (α-αγκυρα)
US10973213B2 (en) * 2018-07-09 2021-04-13 Qatar University Marine clutch apparatus

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE140563C (fr) *
US2487549A (en) * 1945-06-01 1949-11-08 Hess Henry Lawrence Anchor
US2563380A (en) * 1949-09-16 1951-08-07 Staempfli Joseph Alcus Pivoted fluke anchor
US2720184A (en) * 1954-03-29 1955-10-11 Paul W Polenz Articulated and self-locking shank for an anchor
US3404652A (en) * 1967-04-21 1968-10-08 Thomas A. Gardy Foul-proof anchor
US3491712A (en) * 1968-08-22 1970-01-27 John J Ross Self-releasing anchor
JPS49989A (fr) * 1972-03-14 1974-01-07
US4230062A (en) * 1978-12-12 1980-10-28 Fornasiero Peter J Releasable boat anchor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19635688C1 (de) * 1996-09-03 1998-04-09 Wilhelm Roesch Anker mit Festhalten von Wasserfahrzeugen

Also Published As

Publication number Publication date
EP0085090A4 (fr) 1984-10-29
WO1983000126A1 (fr) 1983-01-20
EP0085090A1 (fr) 1983-08-10
CA1187345A (fr) 1985-05-21
JPS58501903A (ja) 1983-11-10

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