EP1466825A1 - Rouleau de guidage pour chaínes d'ancre - Google Patents

Rouleau de guidage pour chaínes d'ancre Download PDF

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Publication number
EP1466825A1
EP1466825A1 EP04252023A EP04252023A EP1466825A1 EP 1466825 A1 EP1466825 A1 EP 1466825A1 EP 04252023 A EP04252023 A EP 04252023A EP 04252023 A EP04252023 A EP 04252023A EP 1466825 A1 EP1466825 A1 EP 1466825A1
Authority
EP
European Patent Office
Prior art keywords
roller
anchor
sheave
cable
cheeks
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.)
Granted
Application number
EP04252023A
Other languages
German (de)
English (en)
Other versions
EP1466825B1 (fr
Inventor
John Edward Grainger
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.)
Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP1466825A1 publication Critical patent/EP1466825A1/fr
Application granted granted Critical
Publication of EP1466825B1 publication Critical patent/EP1466825B1/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
    • B63B21/04—Fastening or guiding equipment for chains, ropes, hawsers, or the like

Definitions

  • the invention relates to an anchor roller for guiding anchor cable from the bow (or stern) of a boat.
  • an anchor roller for guiding anchor cable from the deck of a boat, wherein the roller includes a sheave from which the anchor cable passes directly off the boat, and a counter mechanism for measuring the length of the cable that has been let out, and wherein the counter mechanism is powered by batteries mounted within the anchor roller.
  • the roller is preferably a bow roller mounted in a stemhead fitting.
  • the counter mechanism is preferably powered by batteries mounted within the roller.
  • the roller may be adapted to be mounted between two cheeks of a stemhead fitting, and can have compliant faces which make contact with the cheeks and compensate for different spacings between the cheeks and/or a lack of parallelism. As the roller may be retrofitted into existing stemhead fittings, the ability to cope with fittings of differing dimensions can be important.
  • the roller may be carried between two cheeks in a bracket adapted to be mounted directly to a deck.
  • the compliant faces can be bodies of polyurethane or similar plastics in which metal skeletons are embedded, with the bodies being received within axially open recesses in roller cheeks so that when a bolt is tightened between the outside of a stemhead fitting and the metal skeleton, the polyurethane body is compressed and expands radially to frictionally grip inner surfaces of the roller cheek recesses.
  • the counter mechanism preferably comprises a magnet mounted near the circumference of the roller sheave, and a proximity detector in the roller cheek, so that the length of cable paid out over the sheave is indicated as a function of the number of revolutions of the sheave.
  • the sheave may be configured in the manner of a chain gypsy, ie with indentations in the sheave surface to positively engage with each chain link.
  • the sheave has a surface adapted to make frictional contact with the cable (rope or chain), and bearings so that the sheave will be driven in rotation by the cable passing over it.
  • the sheave may have a central circumferential groove for accepting thin line, and outer circumferential surfaces either side of the groove, against which chain or thicker line will lie. All of the surfaces can have friction enhancing ribs.
  • the counter mechanism may include circuitry to switch the mechanism on as soon as any rotation of the sheave takes place.
  • the counter mechanism can also include a calibration facility to fine tune the counter reading against the actual chain length paid out. This facility can be used when the sheave is used with particularly thick or particularly thin cable.
  • Figure 1 shows a yacht 10 moored via an anchor 12 to the river or sea bed 14.
  • the anchor 12 is attached to the yacht 10 by a cable 16 which may be rope or chain or both.
  • the cable 16 passes along a bow fitting 18 located at the bow of yacht 10, and over a bow roller.
  • FIG 2 shows more details of the bow fitting 18 which is fitted at the extremity of the bow of the yacht 10.
  • the bow fitting comprises a folded stainless steel channel 18 which is mounted on the front of the deck 19 of the yacht 10.
  • a bow roller 20 is mounted by bolts 42 which pass through the sides of the channel 18 into threaded bushes in the bow roller. The roller allows the cable 22 to run freely both from the yacht into the water when the anchor is being lowered, and from the water into the yacht, when the anchor is being hoisted.
  • the bow roller has a display unit at 24 which displays the length of cable paid out, in a manner to be described below.
  • FIG 3 shows the bow roller 20 in section.
  • the roller comprises a pair of cheeks 26a, 26b, and a sheave 28 mounted on bearings 30 between the cheeks 26.
  • the sheave 28 is constructed so that it will make frictional engagement with the links of a conventional anchor chain and/or with an anchor rope, so that the sheave rotates in register with the anchor chain or rope as it is paid out.
  • the sheave has high-friction ribs 29 moulded into the sheave surface.
  • the sheave may be moulded from glass-filled nylon, and the ribs can be of polyurethane, moulded into the sheave.
  • the sheave has a central circumferential groove 31, into which thinner roles will run, and main sheave surfaces 33 either side of the groove, so that thicker ropes and chain can run over the sheave. Mounting the sheave 28 on bearings 30 helps to ensure that there is no resistance to rotation of the sheave, so that the sheave rotates at the same speed as the cable passing over it.
  • the sheave 28 carries a magnet 32 ( Figure 4), and the cheek 26b has a sensor which detects each time the magnet 32 completes a revolution. Appropriate circuitry converts this into a reading on the display 24.
  • the cheeks 26 are held in position within the channel 18 by moulded elastic bodies 34 on each side.
  • One of these bodies 34 is shown, in section, in Figure 7. They comprise a body of resilient plastics, typically polyurethane, within which is embedded a sheet metal skeleton 36.
  • a threaded bush 38 is attached to the metal skeleton 36.
  • the outer surface of the body 34 has moulded pimples 40 which will make contact with the internal cheeks of the channel 18.
  • the bolts 42 (with their washers 44) are separated from the elastic bodies 34, and the roller is positioned between the two cheeks of the bow fitting 18.
  • the bolts 42 are then replaced through the cheeks and tightened into threaded bushes 38. Tightening these bolts will produce contact between the pimpled outer surfaces of the bodies and the channel 18, and will also compress the elastic material of the bodies between the skeleton 36 and the adjacent cheek of the channel 18. This will result in a radial expansion of the elastic bodies 34 which will itself produce frictional contact with walls 46 within the cheeks 26, so that the cheeks 26 will be held against rotation relative to the bow fitting 18.
  • moulded bodies 34 ensures that the cheeks 26 will be correctly held relative to the fitting 18, irrespective of any manufacturing tolerances of the channel 18.
  • This fixing method can accommodate variations in spacing between the cheeks of the channel 18, and variations in parallelism between these cheeks.
  • the exploded view of Figure 4 shows the various components of the bow roller.
  • the cheeks 26a, 26b are plastics mouldings with internal recesses for receiving the moulded elastic bodies 34. When bolted up, the elastic bodies 34 will expand to make frictional contact with the peripheral internal walls 46 of these internal recesses.
  • the recesses are not circular, and the part of the circumference of the cheeks 26 not occupied by the elastic bodies provides, on one cheek 26b, accommodation for a counting mechanism generally indicated at 48.
  • the counting mechanism comprises a counter housing 50 with a recess 52 for receiving a circuit board 54.
  • the circuit board 54 also carries a battery 56 to power the circuitry.
  • An LCD display unit 58 has a cover panel 62 with a window 64 which fits over the display unit 58.
  • a gasket 66 provides water tightness.
  • the counter housing 50 is secured to the cheek 26b by screws 68, and a hinged cover 70 completes the assembly of the counting mechanism 48.
  • cheeks 26a and 26b are identical, i.e. they are non-handed and are the same moulding.
  • the sheave 28 is also a moulded part and may for example be of glass-filled nylon.
  • a socket 76 is provided in one end face of the sheave for receiving a magnet 32.
  • the magnet 32 and the circuitry on the circuit board 54 will work together to trigger a signal on each revolution of the sheave 28 to count the length of cable which has been paid out.
  • the counter mechanism 48 preferably has two sensors sensitive to the passing of the magnet 32, so that the direction of rotation of the sheave can be determined.
  • the sheave 28 is mounted on a spindle 80, and the spindle is held in place between the cheeks 26a and 26b by flush head bolts 82.
  • the spindle 80 has flats at each end which engage in corresponding non-round recesses 84 on the inside faces of the cheeks 26.
  • the outer cover panel 62 of the counter mechanism has a two buttons 86 and 88.
  • the primary function of the button 86 is to switch the mechanism on and off, and the primary function of the button 88 is to switch a back light on and off to illuminate the display 24 through the window 64, in poor light conditions.
  • the ON/OFF button 86 can be pressed to activate the display 24.
  • the circuitry may include an automatic OFF function to switch off the display after a predetermined time delay.
  • buttons 86 and 88 can also be used to activate a secondary menu to enter a calibration routine and to carry out certain other tasks, as depicted in Figure 9.
  • the bow roller described can be readily retro-fitted at the bow of an existing boat and requires no cables or wires. It is a complete operative unit in itself. To fit the unit it is only necessary to fasten the two bolts 42 through the cheeks of a suitable bow fitting.
  • the roller can also be deck mounted, as shown in Figure 8.
  • the roller will then be mounted on the deck of a boat, between an anchor winch and a bow roller or other stemhead fitting, using bolts 90 passing through apertures 92 in cheeks 26.
  • the apertures may be present also in the previously described embodiment, so that one cheek moulding can be either bow mounted ( Figures 1 to 7) or deck mounted ( Figure 8).
  • the head of the bolt 90 can be engaged in an anti-rotation moulding 94 so that the unit can be tightened down onto a deck by tightening a nut on the end of the bolt 90 below the deck.
  • a cradle 96 is provided to accommodate the curved shape of the cheeks 26, and a cap 98 closes the end face of the cheeks 26.
  • roller has been described here for use as a bow roller, over which the anchor cable for the main anchor will be lowered, the roller can also be used at other positions on a boat, eg for lowering a kedge anchor over the stern of a boat.
  • rollers described here provide a direct indication of length of cable paid out, exactly where that information is needed, i.e. right in front of the eyes of the person paying out the anchor cable.
  • the reading from the mechanism could be supplied to a remote position, eg in the cockpit of a boat or to a portable readout which can be carried on the person. This could be through hard wiring from the bow roller, or through a wireless link. If remote reading is preferred, the display at the bow may be omitted, but it could also be present to permit either local or remote reading.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)
  • Window Of Vehicle (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Mechanical Control Devices (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
EP04252023A 2003-04-08 2004-04-03 Rouleau de guidage pour chaînes d'ancre Expired - Lifetime EP1466825B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0308038.9A GB0308038D0 (en) 2003-04-08 2003-04-08 Bow roller
GB0308038 2003-04-08

Publications (2)

Publication Number Publication Date
EP1466825A1 true EP1466825A1 (fr) 2004-10-13
EP1466825B1 EP1466825B1 (fr) 2006-08-09

Family

ID=9956364

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04252023A Expired - Lifetime EP1466825B1 (fr) 2003-04-08 2004-04-03 Rouleau de guidage pour chaînes d'ancre

Country Status (4)

Country Link
EP (1) EP1466825B1 (fr)
AT (1) ATE335650T1 (fr)
DE (1) DE602004001798T2 (fr)
GB (1) GB0308038D0 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20110029229A (ko) * 2009-09-15 2011-03-23 대우조선해양 주식회사 해상부유구조물 및 그 해상부유구조물과 셔틀간의 계류삭에 의한 접안 방법
CN102233944A (zh) * 2010-04-27 2011-11-09 上海冠卓企业发展有限公司 一种单点系泊智能快速脱缆装置
CN116080822A (zh) * 2023-01-10 2023-05-09 保利长大港航工程有限公司 一种低阻尼自适应导链滚轮

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114572345B (zh) * 2022-03-04 2024-01-23 中国舰船研究设计中心 一种滑锚器及其使用方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2552047A1 (fr) * 1983-09-16 1985-03-22 Aker Eng As Chaumard a chaine
FR2657957A1 (fr) * 1990-02-07 1991-08-09 Copmetal Dispositif de mesure du defilement d'une chaine.
US5275379A (en) * 1992-02-14 1994-01-04 Mcaleer Roger W Wildcat chain hoist with whelps, pockets, and movable drum halves
GB2272291A (en) * 1992-11-10 1994-05-11 Peter Charles Epstein Anchor chain measuring apparatus
US5395065A (en) * 1991-03-05 1995-03-07 Daiwa Seiko, Inc. Fishline length measuring device for fishing reel
US5803008A (en) * 1997-06-17 1998-09-08 Georgens Industries, Inc. System and method for monitoring and controlling anchor rode length

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2552047A1 (fr) * 1983-09-16 1985-03-22 Aker Eng As Chaumard a chaine
FR2657957A1 (fr) * 1990-02-07 1991-08-09 Copmetal Dispositif de mesure du defilement d'une chaine.
US5395065A (en) * 1991-03-05 1995-03-07 Daiwa Seiko, Inc. Fishline length measuring device for fishing reel
US5275379A (en) * 1992-02-14 1994-01-04 Mcaleer Roger W Wildcat chain hoist with whelps, pockets, and movable drum halves
GB2272291A (en) * 1992-11-10 1994-05-11 Peter Charles Epstein Anchor chain measuring apparatus
US5803008A (en) * 1997-06-17 1998-09-08 Georgens Industries, Inc. System and method for monitoring and controlling anchor rode length

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20110029229A (ko) * 2009-09-15 2011-03-23 대우조선해양 주식회사 해상부유구조물 및 그 해상부유구조물과 셔틀간의 계류삭에 의한 접안 방법
CN102233944A (zh) * 2010-04-27 2011-11-09 上海冠卓企业发展有限公司 一种单点系泊智能快速脱缆装置
CN102233944B (zh) * 2010-04-27 2014-10-01 上海冠卓企业发展有限公司 一种单点系泊智能快速脱缆装置
CN116080822A (zh) * 2023-01-10 2023-05-09 保利长大港航工程有限公司 一种低阻尼自适应导链滚轮
CN116080822B (zh) * 2023-01-10 2024-06-07 保利长大港航工程有限公司 一种低阻尼自适应导链滚轮

Also Published As

Publication number Publication date
DE602004001798T2 (de) 2007-08-16
DE602004001798D1 (de) 2006-09-21
ATE335650T1 (de) 2006-09-15
EP1466825B1 (fr) 2006-08-09
GB0308038D0 (en) 2003-05-14

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