EP1235736B1 - Guindeaux a chute libre - Google Patents

Guindeaux a chute libre Download PDF

Info

Publication number
EP1235736B1
EP1235736B1 EP00974181A EP00974181A EP1235736B1 EP 1235736 B1 EP1235736 B1 EP 1235736B1 EP 00974181 A EP00974181 A EP 00974181A EP 00974181 A EP00974181 A EP 00974181A EP 1235736 B1 EP1235736 B1 EP 1235736B1
Authority
EP
European Patent Office
Prior art keywords
winch
anchor
pawl
clutch
free fall
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
EP00974181A
Other languages
German (de)
English (en)
Other versions
EP1235736A4 (fr
EP1235736A1 (fr
Inventor
Robert John Muir
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.)
Muir Engineering Pty Ltd
Original Assignee
Muir Engineering Pty 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 Muir Engineering Pty Ltd filed Critical Muir Engineering Pty Ltd
Publication of EP1235736A1 publication Critical patent/EP1235736A1/fr
Publication of EP1235736A4 publication Critical patent/EP1235736A4/fr
Application granted granted Critical
Publication of EP1235736B1 publication Critical patent/EP1235736B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B63B21/16—Tying-up; Shifting, towing, or pushing equipment; Anchoring using winches
    • 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
    • B63B21/04—Fastening or guiding equipment for chains, ropes, hawsers, or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/60—Rope, cable, or chain winding mechanisms; Capstans adapted for special purposes
    • B66D1/72—Anchor-chain sprockets; Anchor capstans

Definitions

  • This invention relates to the area of rope/chain anchor winch/windlasses and in particular to an anchor winch/windlass which can be used in a manner which permits free fall as well as controlled lowering and which can also be used as a conventional winch/windlass.
  • winches/ windlasses will be referred to for simplicity as winches.
  • Automatic winches are particularly suitable for use as anchor winches as when the anchor is being lowered the weight of the anchor can permit free falling of the rope or chain through the anchor winch. This is particularly useful in deep water anchoring. Preferably where anchoring is to take place in shallow water it is desirable that the anchor be lowered under the control of a motor.
  • a problem associated with trying to use anchor winches in free fall mode is that, if a boat has a deep chain locker, the weight of the chain hanging into the chain locker below the anchor winch can be greater than the weight of the anchor. Therefore the anchor cannot initially free fall despite an anchor winch being in free fall mode. The anchor will only free fall when the combined weight of the anchor and chain hanging over the bow roller is greater than that of the chain hanging down into the chain locker.
  • Winches are known which are capable of operating in free fall mode and are also able to permit controlled motorised lowering and braking of the falling anchor.
  • EP 0479624A discloses a winch which can permit free-fall by means of two co-axial cones connected about a drive shaft whereby a first cone can be caused to assume one of two axial positions relative to the second cone, the arrangement being such that a rope or chain passing between the two cones can be driven by the winch when the second cone is in one of its two positions and can free fall when the second cone is in the other of its two positions.
  • a winch with means to automatically provide free fall of an anchor, said winch including means to drive the anchor's attached rope/chain out of a storage area until the weight of the anchor and attached rope/chain is sufficient to activate a means to disengage the drive mechanism such that the anchor is permitted to free fall; the winch also having means to provide controlled motorised lowering and braking of the falling anchor at any time during its downwards fall but which may also be used as a conventional power up power down winch; the winch characterised in that it includes a drive shaft with a clutch cone keyed to it, which clutch cone provides close engagement within a bore in a rope/chain gypsy.
  • the conversion to a conventional winch be effected by disengaging a clutching and declutching pawl.
  • the winch be able to be controlled remotely or at the winch itself.
  • the winch of the invention is fitted with a rope/chain gypsy allowing it to use all rope, all chain or a rope/chain combination.
  • the requirements of this anchor winch are that when lifting the anchor the gypsy must be driven with little or no loss of drive between the main shaft and the gypsy. It must permit quick and easy free fall of the anchor when required.
  • the invention provides an anchor winch 100 having a clutching declutching pawl 24 such that the anchor winch can be used as a conventional winch by disengaging the clutching/declutching pawl (the pawl).
  • the anchor winch 100 of the invention includes a base 19 which is coupled to a gearbox, planetary box, or a worm and worm wheel drive.
  • An electric or hydraulic motor can power the gear drive and the radial movement is transferred from the motor to the gear drive.
  • the main shaft 17 is fitted to a base plate 1 which has an internal bearing to locate the main shaft 17 which is keyed 18 to the gear drive giving a positive drive.
  • the drive from the main shaft is transferred to a rope/chain gypsy 10 via a clutch cone drive 12.
  • the clutch cone drive 12 has an internal bore and an internal keyway and is fitted onto the main shaft 17 with a key fitted between the clutch cone and the main shaft.
  • the clutch cone is held in position on the main shaft by two circlips 11, 13.
  • the outside diameter of the clutch cone 12 is tapered 25 degrees while the underside of the gypsy 10 has a section bored to the same angle and diameter as the clutch cone to allow the gypsy to sit over the clutch cone and have the best drive possible.
  • the gypsy 10 which sits over the main shaft 17 and on the clutch cone 12 is bored 0.15mm larger than the main shaft to allow it to rotate freely on the main shaft.
  • the gypsy has no positive drive between itself, the clutch cone or the main shaft.
  • a PVC clutch nut washer 9 Located above the gypsy is a PVC clutch nut washer 9 which is used to assist in the engaging and disengaging of the clutch nut 8.
  • the clutch nut 8 is fitted to the main shaft 17 and when the main shaft is driven in the lifting direction the clutch nut 8 is held in position by a spring 4 and loaded plunger pin 5 against a pawl 24 which is mounted on to the anchor winch chain cover/pawl housing 23. This allows the clutch nut to be driven down the main shaft until it tightens against the PVC clutch nut washer and the clutch cone forcing the gypsy to rotate in the same direction as the main shaft. This rotation pulls the rope or chain through the gypsy lifting the anchor.
  • the plunger pin 5 which is fitted to the outer diameter of the clutch nut 8 holds the clutch nut against the pawl 24 so that when the main shaft 17 is rotated in either direction the clutch nut is driven up or down until it tightens on the gypsy or clutch nut retaining washer. When this happens the plunger pin 5 is forced back into the clutch nut 8 to allow the clutch nut to rotate and not over tighten. Once the clutch nut rotates past the pawl the plunger pin returns to its normal position.
  • the plunger pin 5 is allowed to move because of a spring 4 installed behind it.
  • the spring allows the plunger pin to be pushed in when the clutch nut is under load allowing the clutch nut to rotate. Once the clutch nut has rotated past the pawl the spring pushes the plunger pin back to its normal position, this repeats itself once every revolution until the anchor winch is stopped or its direction changed.
  • the pawl 24 which is mounted to the chain cover/pawl housing 23 is mounted by a pivot point roll pin 25 to enable the pawl to be engaged for automatic downwards free fall or disengaged for conventional anchor winch operation.
  • the pawl 24 is machined with various angles at the plunger pin 5 contact areas to allow it to have two functions. It holds the clutch nut in position to engage the gypsy and also, when the clutch nut is rotated in the opposite direction, it will disengage the gypsy allowing the anchor to free fall.
  • the plunger pin 5 When the clutch nut 8 is to be engaged the anchor winch 100 is operated in lift mode, the plunger pin 5 then pushes against the top section of pawl 24 which has a 79 dgree approach angle to the plunger pin which angle does not allow the plunger pin to depress. This holds the clutch nut 8 in position to be tightened.
  • a clutch nut retaining washer 2 is bolted to the top of the main shaft 17 and acts to stop the clutch nut becoming undone when the anchor winch is in reverse or free fall.
  • This washer 2 has a PVC wear washer 3 fitted to its underside to reduce friction between the clutch nut 8 and its retaining washer 2 and ensure that the clutch nut returns to its lifting position when the winch is in forward or lift mode.
  • ratchet pawl 15 and spring 14 to assist the anchor winch at the start of free fall at which time the weight of the anchor and rope/chain may be insufficient to effect free fall.
  • the ratchet pawl 15 and spring 14 are fitted to the clutch cone 12 the clutch cone having a cavity machined on one side of its tapered surface which allows the ratchet pawl and spring to sit in the clutch cone but below the bearing area or tapered surface.
  • the tapered section of the gypsy 10 bore where the clutch cone 12 sits has a groove machined down one side of the tapered surface. This groove catches the front or leading edge of the ratchet pawl creating a positive drive between the clutch cone and the gypsy.
  • This positive drive will only occur when the anchor winch is in reverse or free fall mode. This positive drive allows the anchor winch to pull chain up and out of the chain locker allowing the anchor to lower. Once the anchor and chain that has passed over the bow roller weighs more than the chain hanging down into the chain locker the anchor will begin to free fall. The ratchet pawl will then release itself from the groove in the gypsy acting like a ratchet in reverse.
  • the anchor winch of the invention therefore has the capacity to allow automatic lowering of an anchor to simulate continuous free fall or it may be used as a conventional winch by disengaging pawl 24. It may also be operated at the winch or remotely by a switching means.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Transmission Devices (AREA)
  • Wind Motors (AREA)
  • Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Golf Clubs (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)

Claims (11)

  1. Treuil (100) qui est muni de moyens pour permettre automatiquement une chute libre d'une ancre, ledit treuil incluant des moyens pour entraîner la corde/chaîne fixée à l'ancre hors d'une zone de stockage jusqu'à ce que le poids de l'ancre et de la corde/chaîne attachée soit suffisant pour activer un moyen pour sortir de prise le mécanisme d'entraînement de sorte que l'ancre peut tomber librement; le treuil ayant également des moyens pour permettre un abaissement et freinage motorisé contrôlé de l'ancre qui tombe à tout moment durant sa chute mais qui peut également être utilisée comme treuil de mise sous/mise hors tension; le treuil étant caractérisé en ce qu'il comporte un arbre d'entraînement (17) avec un cône d'embrayage (12) claveté à celui-ci, ledit cône d'embrayage réalise une prise bien ajustée avec un perçage dans un barbotin de corde/chaîne (10).
  2. Treuil (100) selon la revendication 1, dans lequel le moyen pour permettre automatiquement une chute libre pour un treuil est réalisé par un cliquet (24) qui peut être sorti de prise pour une opération de treuil classique motorisée.
  3. Treuil (100) selon la revendication 2, dans lequel le barbotin est apte à tourner librement sur l'arbre d'entraînement.
  4. Treuil (100) selon la revendication 3, ayant un écrou d'embrayage (8) maintenu en position contre le cliquet (24) par un ressort (4) et un axe de plongeur chargé (5) lorsque l'arbre d'entraînement est entraîné dans une direction de levage, et ledit écrou d'embrayage est entraîné vers le bas de l'arbre (17) et se resserre par rapport au cône d'embrayage (12) en amenant le barbotin (10) à tourner dans la même direction que l'arbre.
  5. Treuil (100) selon la revendication 4, dans lequel la rotation de l'arbre d'entraînement (17) dans une direction opposée amène l'axe de plongeur (5) à être tenu contre le cliquet (24) en forçant ainsi le relâchement de l'écrou d'embrayage (8) et son entraînement par l'arbre d'entraînement et amène le barbotin à être libéré et à fonctionner en mode de chute libre.
  6. Treuil (100) selon la revendication 4 ou la revendication 5, dans lequel le ressort (4) permet à l'axe de plongeur (5), qui est ajusté au diamètre extérieur de l'écrou d'embrayage (8), d'être poussé relativement à l'écrou d'embrayage lorsque l'écrou d'embrayage est sous charge en permettant à l'écrou d'embrayage de tourner de telle sorte que, lorsque l'écrou d'embrayage a passé le cliquet (24), le ressort pousse le plongeur à nouveau vers l'extérieur.
  7. Treuil (100) selon la revendication 6, dans lequel une section supérieure du cliquet (24) a un angle d'approche au plongeur (5) en mode de levage qui ne permet pas l'enfoncement du plongeur.
  8. Treuil (100) selon la revendication 7, dans lequel, lorsque l'écrou d'embrayage (8) se resserre et que le plongeur (5) descend le cliquet (24), lorsque l'écrou d'embrayage s'est resséré, l'angle d'approche du cliquet permet au plongeur d'être enfoncé facilement.
  9. Treuil (100) selon l'une quelconque des revendications précédentes, dans lequel des moyens sont prévus pour créer un entraînement positif entre le barbotin (10) et le cône d'embrayage (12), ledit entraînement positif a lieu seulement lorsque le treuil est en mode de chute inverse ou libre.
  10. Treuil (100) selon la revendication 9, dans lequel le moyen d'entraînement positif est effectué par la mise en prise d'un cliquet de rochet (15) sur le cône d'embrayage (12) avec une rainure dans le perçage de barbotin (10).
  11. Treuil (100) selon la revendication 10, dans lequel l'entraînement positif permet au treuil de tirer la corde et/ou chaîne d'un organe de blocage jusqu'à ce que le poids de l'ancre et de la corde et/ou chaîne sortie de l'organe de blocage dépasse le poids de celui dans celui-ci et amène l'ancre à tomber librement et amène le cliquet de rochet (15) à être relâché.
EP00974181A 1999-11-15 2000-11-15 Guindeaux a chute libre Expired - Lifetime EP1235736B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AUPQ994030 1999-11-15
AUPQ4030A AUPQ403099A0 (en) 1999-11-15 1999-11-15 Free fall windlasses
PCT/AU2000/001392 WO2001035712A2 (fr) 1999-11-15 2000-11-15 Guindeaux a chute libre

Publications (3)

Publication Number Publication Date
EP1235736A1 EP1235736A1 (fr) 2002-09-04
EP1235736A4 EP1235736A4 (fr) 2006-11-29
EP1235736B1 true EP1235736B1 (fr) 2011-06-29

Family

ID=3818175

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00974181A Expired - Lifetime EP1235736B1 (fr) 1999-11-15 2000-11-15 Guindeaux a chute libre

Country Status (4)

Country Link
EP (1) EP1235736B1 (fr)
AT (1) ATE514651T1 (fr)
AU (3) AUPQ403099A0 (fr)
WO (1) WO2001035712A2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2001267949A1 (en) * 2000-06-16 2001-12-24 Fairthorne Marine Limited Winch
GB0526427D0 (en) * 2005-12-23 2006-02-08 Lewmar Ltd Marine line hauling device assembly
CN115817713B (zh) * 2022-11-24 2023-08-08 广东精铟海洋工程股份有限公司 一种万向导向装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4566674A (en) * 1984-11-05 1986-01-28 Fulton Manufacturing Corporation Neutral winch
NZ240141A (en) * 1990-10-05 1993-03-26 Muir Eng Pty Ltd Power winch; free fall and winding modes selected by movement of conical pulleys
DE4446443C2 (de) * 1994-12-23 1996-10-02 Fuerstlich Hohenzollernsche We Winde mit einer als Freifallbremse verwendbaren Kupplung
JPH09249391A (ja) * 1996-03-15 1997-09-22 Masabumi Nakade 揚錨機

Also Published As

Publication number Publication date
AU7158700A (en) 2001-05-17
WO2001035712A2 (fr) 2001-05-25
AU1259001A (en) 2001-05-30
AU774056B2 (en) 2004-06-17
WO2001035712A3 (fr) 2001-10-11
EP1235736A4 (fr) 2006-11-29
ATE514651T1 (de) 2011-07-15
AUPQ403099A0 (en) 1999-12-09
EP1235736A1 (fr) 2002-09-04

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