WO2008020761A1 - Device for a shark jaw - Google Patents

Device for a shark jaw Download PDF

Info

Publication number
WO2008020761A1
WO2008020761A1 PCT/NO2007/000282 NO2007000282W WO2008020761A1 WO 2008020761 A1 WO2008020761 A1 WO 2008020761A1 NO 2007000282 W NO2007000282 W NO 2007000282W WO 2008020761 A1 WO2008020761 A1 WO 2008020761A1
Authority
WO
WIPO (PCT)
Prior art keywords
shark jaw
load
readers
cable
chain
Prior art date
Application number
PCT/NO2007/000282
Other languages
French (fr)
Inventor
Arild OVERÅ
Per Huse
Original Assignee
Rolls-Royce Marine As
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
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Application filed by Rolls-Royce Marine As filed Critical Rolls-Royce Marine As
Priority to GB0902141A priority Critical patent/GB2453898B/en
Priority to CN2007800304965A priority patent/CN101506030B/en
Priority to BRPI0716673A priority patent/BRPI0716673B8/en
Priority to US12/376,776 priority patent/US20110041751A1/en
Publication of WO2008020761A1 publication Critical patent/WO2008020761A1/en

Links

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
    • B63B21/18—Stoppers for anchor chains

Definitions

  • the present invention relates to a device for a shark jaw onboard a vessel, where the shark jaw is arranged for securing an anchor line, a cable, a chain or the like, and also associated applications.
  • the object of the present invention is to provide a solution that allows measuring of load effects with the help of load reading.
  • a safe and exact method can be provided for reading loads in, for example, the anchor line when this is secured in the shark jaw.
  • a device for a shark jaw onboard a vessel in which the shark jaw is arranged for securing an anchor line, a cable, a chain or the like, wherein the shark jaw comprises measuring equipment in the form of one or more load readers arranged to one or more sides of the shark jaw to read the strains which arise during load effects in the mentioned anchor line, cable, chain or the like.
  • Said load reader can be arranged at an angle in relation to the main body of the shark jaw, such as 45 degrees. Additionally the load readers can be arranged in pairs, and the load readers can be made up of a number of load cells, strain gauges or the like. The invention also applies to the use of measuring equipment in a shark jaw.
  • Figure 1 shows an example of an arrangement of a shark jaw and tow pin onboard a vessel.
  • Figure 2 shows in more detail a shark jaw equipped with measuring equipment according to the invention.
  • Figures 3a-3c show in more detail an example of placing of the load cell at a shark jaw.
  • Figure 1 shows a shark jaw 10 and a tow pin 12, arranged so that it can be raised or lowered in the deck of a vessel, to secure and lead, respectively, an anchor line, a cable, a chain or the like.
  • the construction of the shark jaw can be made in a traditional way and is presumed to be known to one skilled in the art.
  • the shark jaw 10 comprises an, in the main, vertically arranged main body 14 where a number of load readers 16 are arranged.
  • the load readers are preferably arranged in a cavity or pocket 18 in said body 14, and the pocket 18 (and thereby, the load readers 16) can be protected by a cover 20 which is bolted over the pocket 14 such that they are kept dry and which protects them against anchoring components .
  • the load readers can, for example, be arranged at an angle in the shark jaw.
  • An angle of 45 degrees is preferred, but other angles can also be used.
  • the advantage with such an arrangement is that the load reader will thereby not be dependent of how high the shark jaw is over the deck during the load effect.
  • a further number of load readers for example two, can be arranged at each side of the shark jaw.
  • FIG. 2 shows that from the pocket 18 with the load readers 16, a cable pipe 22 can extend on the inside of the shark jaw down to the underside of the shark jaw. Cables from each load reader can run in said cable pipe to a coupling box 24 fastened to the underside. From this cable box 24 only two wires 26, 28 need to run further to an electric cabinet 30. From said cabinet, signals can be sent that can display the load on the shark jaw and thus the anchoring lines, cables, etc., to for example a display unit on the bridge of the vessel.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
  • Piles And Underground Anchors (AREA)
  • Mechanical Means For Catching Fish (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)

Abstract

A device for a shark jaw (10) onboard a vessel is described, where the shark jaw is arranged to secure an anchor line, a cable, a chain or the like, characterised in that the shark jaw comprises measuring equipment in the form of one or more load readers (16) arranged to one or more sides of the shark jaw to read strains which arise during load effects in said anchor line, cable, chain or the like.

Description

DEVICE FOR A SHARK JAW
The present invention relates to a device for a shark jaw onboard a vessel, where the shark jaw is arranged for securing an anchor line, a cable, a chain or the like, and also associated applications.
In connection with anchoring or moving of an offshore platform, it will often be useful to know the load effects on the mooring line. Correspondingly, with other operations onboard a vessel, it will be useful to know the strains on the anchor line, chain or cables which run through a shark jaw.
The object of the present invention is to provide a solution that allows measuring of load effects with the help of load reading. By arranging a number of load cells or similar, to the shark jaw, a safe and exact method can be provided for reading loads in, for example, the anchor line when this is secured in the shark jaw.
The above mentioned object is achieved with a device which is defined in the independent claim 1, by a device for a shark jaw onboard a vessel, in which the shark jaw is arranged for securing an anchor line, a cable, a chain or the like, wherein the shark jaw comprises measuring equipment in the form of one or more load readers arranged to one or more sides of the shark jaw to read the strains which arise during load effects in the mentioned anchor line, cable, chain or the like.
Preferred embodiments are given in the dependent claims 2-
4. Said load reader can be arranged at an angle in relation to the main body of the shark jaw, such as 45 degrees. Additionally the load readers can be arranged in pairs, and the load readers can be made up of a number of load cells, strain gauges or the like. The invention also applies to the use of measuring equipment in a shark jaw.
The invention shall now be described in more detail with the help of the enclosed drawings, in which;
Figure 1 shows an example of an arrangement of a shark jaw and tow pin onboard a vessel.
Figure 2 shows in more detail a shark jaw equipped with measuring equipment according to the invention.
Figures 3a-3c show in more detail an example of placing of the load cell at a shark jaw.
Figure 1 shows a shark jaw 10 and a tow pin 12, arranged so that it can be raised or lowered in the deck of a vessel, to secure and lead, respectively, an anchor line, a cable, a chain or the like. The construction of the shark jaw can be made in a traditional way and is presumed to be known to one skilled in the art.
The shark jaw 10 comprises an, in the main, vertically arranged main body 14 where a number of load readers 16 are arranged. The load readers are preferably arranged in a cavity or pocket 18 in said body 14, and the pocket 18 (and thereby, the load readers 16) can be protected by a cover 20 which is bolted over the pocket 14 such that they are kept dry and which protects them against anchoring components .
As shown in figures 3a-3c, the load readers can, for example, be arranged at an angle in the shark jaw. An angle of 45 degrees is preferred, but other angles can also be used. The advantage with such an arrangement is that the load reader will thereby not be dependent of how high the shark jaw is over the deck during the load effect. To increase reliability, a further number of load readers, for example two, can be arranged at each side of the shark jaw.
Figure 2 shows that from the pocket 18 with the load readers 16, a cable pipe 22 can extend on the inside of the shark jaw down to the underside of the shark jaw. Cables from each load reader can run in said cable pipe to a coupling box 24 fastened to the underside. From this cable box 24 only two wires 26, 28 need to run further to an electric cabinet 30. From said cabinet, signals can be sent that can display the load on the shark jaw and thus the anchoring lines, cables, etc., to for example a display unit on the bridge of the vessel.

Claims

C L A I M S
1. Device for a shark jaw (10) onboard a vessel, where the shark jaw is arranged to secure an anchor line, a cable, a chain or the like, c h a r a c t e r i s e d i n that the shark jaw comprises measuring equipment in the form of one or more load readers (16) arranged to one or more sides of the shark jaw, arranged to read the strains which arise during load effects in said anchor line, cable, chain or the like.
2. Device according to claim 1, c h a r a c t e r i s e d i n that said load reader (16) is arranged at an angle in relation to the main body (14) of the shark jaw, such as 45 degrees.
3. Device according to claim 2, c h a r a c t e r i s e d i n that said load readers (16) are arranged in pairs.
4. Device according to claims 2-3, c h a r a c t e r i s e d i n that said load readers (16) are made up of a number of load cells, strain gauges, or the like.
5. Use of measuring equipment in a shark jaw (10) onboard a vessel, where the shark jaw is arranged to secure an anchor line, a cable, a chain or the like, as the shark jaw comprises measuring equipment in the form of one or more load readers (16) arranged to one or more sides of the shark jaw to read the strains which arise during load effects in said anchor line, cable, chain or the like.
PCT/NO2007/000282 2006-08-17 2007-08-16 Device for a shark jaw WO2008020761A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB0902141A GB2453898B (en) 2006-08-17 2007-08-16 Device for a shark jaw
CN2007800304965A CN101506030B (en) 2006-08-17 2007-08-16 Device for a shark jaw
BRPI0716673A BRPI0716673B8 (en) 2006-08-17 2007-08-16 HYDRAULIC PELICAN
US12/376,776 US20110041751A1 (en) 2006-08-17 2007-08-16 Device for a shark jaw

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20063699 2006-08-17
NO20063699A NO20063699L (en) 2006-08-17 2006-08-17 Device by a shark jaw

Publications (1)

Publication Number Publication Date
WO2008020761A1 true WO2008020761A1 (en) 2008-02-21

Family

ID=39082249

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO2007/000282 WO2008020761A1 (en) 2006-08-17 2007-08-16 Device for a shark jaw

Country Status (6)

Country Link
US (1) US20110041751A1 (en)
CN (1) CN101506030B (en)
BR (1) BRPI0716673B8 (en)
GB (1) GB2453898B (en)
NO (1) NO20063699L (en)
WO (1) WO2008020761A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104266828B (en) * 2014-08-13 2016-12-07 武汉船用机械有限责任公司 A kind of shark jaw and the pilot system of backing pin and test method

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101797958A (en) * 2010-02-26 2010-08-11 惠生（南通）重工有限公司 Ship with towing device
CN102233944B (en) * 2010-04-27 2014-10-01 上海冠卓企业发展有限公司 Single point mooring intelligent quick cable releasing device
DE102010019658A1 (en) * 2010-04-30 2011-11-03 Siemens Aktiengesellschaft ship's hold
CN102451958A (en) * 2010-10-21 2012-05-16 天津迎新船舶机械有限公司 Process for welding pipe fittings of shark jaw device
NO334917B1 (en) * 2011-10-05 2014-07-14 Rolls Royce Marine As Disconnect device for instant disconnection of a load
CN103175705B (en) * 2013-02-28 2015-07-01 武汉船用机械有限责任公司 Method and system for testing shark jaws
CN103231775B (en) * 2013-04-27 2015-09-02 武汉船用机械有限责任公司 A kind of V shape shark jaw
CN107380348A (en) * 2017-05-31 2017-11-24 江苏马力德机械有限公司 Hydraulic pressure shark jaw

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3352152A (en) * 1966-11-30 1967-11-14 Armco Steel Corp Load measuring windlass
US3803942A (en) * 1971-08-10 1974-04-16 Drexel Equipment Ltd Pawls
US3859946A (en) * 1973-04-19 1975-01-14 Peter G Hammerschlag Under load releasable chain stoppers
EP0831053A2 (en) * 1996-09-18 1998-03-25 Maritime Pusnes AS A ram winch
WO1998040306A1 (en) * 1997-03-14 1998-09-17 Bardex Engineering, Inc. Underwater self-aligning fairlead latch device for mooring a structure at sea

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3911764A (en) * 1974-10-23 1975-10-14 James Daniel Duggan Chain guiding apparatus
NO300675B1 (en) * 1995-07-12 1997-07-07 Karmoy Winch As Stop and hold device for chain or wire
US7325508B2 (en) * 2005-03-24 2008-02-05 Sofec, Inc. Dual-axis chain support assembly
NO332933B1 (en) * 2005-08-18 2013-02-04 Rolls Royce Marine As System for handling a wire, chain and cable on board a vessel

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3352152A (en) * 1966-11-30 1967-11-14 Armco Steel Corp Load measuring windlass
US3803942A (en) * 1971-08-10 1974-04-16 Drexel Equipment Ltd Pawls
US3859946A (en) * 1973-04-19 1975-01-14 Peter G Hammerschlag Under load releasable chain stoppers
EP0831053A2 (en) * 1996-09-18 1998-03-25 Maritime Pusnes AS A ram winch
WO1998040306A1 (en) * 1997-03-14 1998-09-17 Bardex Engineering, Inc. Underwater self-aligning fairlead latch device for mooring a structure at sea

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104266828B (en) * 2014-08-13 2016-12-07 武汉船用机械有限责任公司 A kind of shark jaw and the pilot system of backing pin and test method

Also Published As

Publication number Publication date
US20110041751A1 (en) 2011-02-24
GB2453898A (en) 2009-04-22
NO20063699L (en) 2008-02-18
GB0902141D0 (en) 2009-03-25
BRPI0716673B8 (en) 2022-11-22
BRPI0716673B1 (en) 2020-04-14
BRPI0716673A2 (en) 2013-09-17
CN101506030A (en) 2009-08-12
CN101506030B (en) 2013-06-12
GB2453898B (en) 2011-04-27

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