WO2021235943A1 - Système de libération pour bateau d'approvisionnement ou remorqueur - Google Patents

Système de libération pour bateau d'approvisionnement ou remorqueur Download PDF

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Publication number
WO2021235943A1
WO2021235943A1 PCT/NO2021/050125 NO2021050125W WO2021235943A1 WO 2021235943 A1 WO2021235943 A1 WO 2021235943A1 NO 2021050125 W NO2021050125 W NO 2021050125W WO 2021235943 A1 WO2021235943 A1 WO 2021235943A1
Authority
WO
WIPO (PCT)
Prior art keywords
towing
hook
wire
release system
towing hook
Prior art date
Application number
PCT/NO2021/050125
Other languages
English (en)
Inventor
Bjarne Engen
Steinar Andersen
Original Assignee
Bifrost Tug 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
Application filed by Bifrost Tug As filed Critical Bifrost Tug As
Priority to EP21808597.5A priority Critical patent/EP4168303A1/fr
Publication of WO2021235943A1 publication Critical patent/WO2021235943A1/fr

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
    • B63B21/56—Towing or pushing equipment
    • B63B21/58—Adaptations of hooks for towing; Towing-hook mountings
    • B63B21/60—Quick releases
    • 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
    • B63B21/56—Towing or pushing equipment
    • B63B21/58—Adaptations of hooks for towing; Towing-hook mountings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/66—Tugs

Definitions

  • the present invention relates to a release system for a supply boat or tugboat having a towing hook rotatably mounted and which is fitted with a fastening hook for receiving a towing rope, where the fastening hook is equipped with an open, through-running groove for receiving a towing wire which runs to a winch.
  • a tugboat with a towing rope attached to the tow can be about to turn to get the stern in the direction of travel, and suddenly an acceleration is generated in the tow.
  • Many tugboats do not have stability reserves to withstand the force generated in the tow rope as it tightens across the transverse side. Lack of stability reserves can be due to the towing arrangement which has an effective attachment point of the towing connection approximately amidships and in the centre of the vessel. This makes the tugboat vulnerable to large tilting and capsizing. In such cases, it can be fatal if the emergency release for the towing hook is too far from the maneuvering position.
  • the towing connection can be triggered from the current steering position for the boat, this will not remove all hazards.
  • US 2005284355 A1 shows a rotatable arm equipped with a hook for receiving a mooring line.
  • a second "heaving line” is used to pull the mooring line through a guide collar and through a groove in the hook and over the hook so that the mooring line is hooked securely onto the hook.
  • EP 0176189 A1 shows a tug with a towing hook mounted at the outer end of a towing arm, the inner end of which is mounted on the main deck of the tug in a manner such that the arm can swivel above the main deck from one side to the other side of the tug about an upright axis under the control of a power-operated driving mechanism.
  • the tow line passes through a fairlead and then to the drum of a self tensioning winch.
  • the drive to the arm augments the steering capability and the characteristics of the winch keep the power required for the drive within controlled limits.
  • the arm is also pivoted about a horizontal axis so that it can swing upwards and downwards and is mounted on a platform, mounted on a carriage which is movable fore and aft on rails on the main deck. These movements of the arm are also controlled by power mechanisms and they adjust the position of the point of action of the tow line in such a way that in whatever direction the tow line extends, even exactly athwartships from the tug, the line of action of the pull in the tow line produces only a small capsizing moment upon the tug.
  • the trigger system according to the invention shall, in principle, not be affected by rolling and stamping due to waves. This is achieved by the release system only reacting to the angle between the towing rope/hook and the towboat’s longitudinal and transverse vertical axis.
  • the angle between the towing line and the towboats vertical axis for release can be adjusted and can be different for the angles in the horizontal plane so that there can be one angle for trimming, and another for tilting, with a stepless continuous transition.
  • release system releases a towing wire that runs through the towing hook.
  • the towing hook is designed to be used both with an ordinary tow rope and with wire from a winch and can also be used with a release system described in WO2019/098845 A1 (corresponding to N0343539 B1) in both configurations. At least some of the sensors can, in this case, be designed as described in said WO2019/098845 A1.
  • the release system When used with a towing rope, the release system, according to the invention, automatically releases the towing hook's attachment hook and releases the towing rope at a pre-set danger angle, but when using a towing wire, the release system releases a drum on a winch at a pre-set danger angle.
  • the towing hook It is the vertical angle of the towing hook in relation to the vertical axis of the boat that leads to a release when the pre-set danger angle is exceeded.
  • the towing rope loop is attached to the attachment hook when the towing rope is used, so the towing hook will always be in the direction of the towing rope, both horizontally and vertically.
  • the towing hook is made so that the towing wire can run through a groove in the middle of the fastening hook.
  • a release system is provided on a supply boat or tugboat, where the release system comprises a towing hook rotatably mounted and equipped with a fastening hook for receiving a towing rope, in that the fastening hook is equipped to receive an open, through-running groove for receiving a towing wire that runs to a winch.
  • the towing hook comprises one or more sensors which register the vertical and/or horizontal angular direction, and hence the direction, of the towing hook relative to the boat, where said sensors are connected to a control unit which, based on the registered angular directions of the towing hook, is arranged to activate a release mechanism on the towing hook to release the towing wire from the fastening hook or to activate a release mechanism on the winch that lets out the towing wire.
  • the fastening hook of the towing hook comprises two upwardly projecting hook parts for forming the open, through-running groove lying between two said hook parts, where a bolt runs between the two upwardly connecting hook parts of the fastening hook, as the bolt is removable to permit insertion or removal of the towing wire in the through-running track.
  • the fastening hook of the towing hook is preferably rotatably mounted on a support shaft, where the rotational movement of the support hook is locked or released by the release mechanism.
  • the fastening hook of the towing hook is preferably rotatably mounted on a support shaft, and the fastening hook comprises a first wire disc in the through- running groove, where the first wire disc is mounted on said support shaft.
  • the support shaft can be located on the towing hook in an area below the towing rope placement on the towing hook, whereby a lower part of the fastening hook and the first wire disc lies in an opening or recess in the towing hook.
  • a second wire disc can be mounted on the detachable bolt that runs between the two upwardly extending hook parts of the fastening hook.
  • a head and a fastening nut of the bolt can, when in use, be detachable recessed in a respective recess on an outside of the two hook parts.
  • the towing hook comprises an articulated rotatably turning arm which is mounted on a support shaft equipped with the sensor for registration of the horizontal position of the towing hook and which, in an articulated connection, comprises a rotatable shaft equipped with the sensor for registration of the vertical position of the towing hook.
  • the towing hook can comprise a first block disc for guiding the towing wire on to the winch, where the block disc, in one embodiment, is mounted on the same support shaft as the towing hook.
  • the towing hook can comprise a first block disc for leading the towing wire on to the winch, where the block disc is mounted such that it can flip on a horizontal shaft on the towing hook and follows the movement of the towing hook in the horizontal plane.
  • the release system can also comprise a second block disc to guide the towing wire to the winch.
  • the release mechanism on the winch can comprise a locking bolt or ratchet mechanism which can be activated by the control unit based on registered angular directions of the towing hook.
  • the release mechanism on the towing hook can comprise a ratchet mechanism which can be activated by the steering unit based on registered angular directions of the towing hook.
  • the steering unit can be connected to one or more sensors for registration of the tilting angle and trim angle of the boat and where the steering unit releases the winch automatically at dangerous tilting and trimming.
  • Figure 1 shows a towing hook that is included in the system according to the invention, seen from the side.
  • Figure 2 shows a plane view of the towing hook which is part of the invention.
  • Figures 3 and 4 show an end outline of the towing hook.
  • Figure 5 shows a partial section of the towing hook fitted with a towing rope.
  • Figure 6 shows the system according to the invention seen from the side, where the towing hook is fitted with a towing wire.
  • FIG. 7 shows the corresponding system according to the invention, seen from above.
  • Releasers for towing hooks come in many variants, both pneumatic, hydraulic and purely mechanical, such as cord pulls. Common to all is that some form of device is used to release the fastening hook, wheel or fastener itself, which holds the towing rope so that it is released. The releaser can be operated or activated from the wheelhouse or other suitable places on the boat. The releaser is therefore not further explained in the present application, as a releaser for a towing hook is considered known to a person skilled in the art.
  • towing hook the entire pivotable unit
  • hook itself to which the loop of the towing rope is attached
  • attachment/fastening hook A release system according to the invention will comprise a towing hook, discs, winch and releasers, etc.
  • towing wire is meant a load-bearing wire, cables or the like.
  • the towing hook 10 comprises a swinging arm or a turning arm 30 which is mounted on the supply boat or towing boat (not shown) in a support shaft 22 which allows rotatable movement of the towing hook in a horizontal plane. Furthermore, the towing hook 10 is moved up and down in a vertical plane in that the turning arm 30 comprises an articulated connection with a rotatable shaft 24. Alternatively, the support shaft 22 can be arranged for said vertical movement.
  • the support shaft 22 and possibly the rotatable shaft 24 are equipped with sensors 60,62 for registering angular directions, and hence the direction of the towing hook 10, that is the position of the towing hook 10 in relation to the boat.
  • the sensors can be, for example, magnetometers or corresponding sensors for the registration of angular directions.
  • the loop of the towing rope 34 is attached to the fastening hook 12 when the towing rope is used, as shown in figure 5, so that the towing hook 10 will always be in the direction of the towing rope both horizontally and vertically.
  • the corresponding towing hook 10 will stand in the direction of the towing wire 36 both horizontally and vertically when a towing wire 36 from a winch 40 is used, as shown in figures 6 and 7.
  • a first block disc 32 is also arranged, where the block disc lies on the turning arm 30 of the towing hook 10.
  • the first block disc 32 guides the towing wire 36 on to a second block disc 42 located at a distance from the towing hook 10, whereupon the towing wire 36, possibly via other block discs or similar, is guided to the winch 40.
  • the first block disc 32 on the towing hook 10 can be mounted to follow the towing hook in the horizontal plane but can flip, i.e. be tiltable, about a horizontal shaft such that the towing wire 36 can be guided straight into the winch 40, which can then stand some distance vertically over the towing hook 10.
  • the sensors 60,62 are connected to a control unit 50 which, based on registered angular directions of the towing hook 10, can trigger a release mechanism 28 on the towing hook 10.
  • the connection to the control unit can be a wired connection with wires 52,54 or be wireless.
  • the control unit 50 can also be any logic circuit or programmable unit suitable for the purpose.
  • the release mechanism 28 is, in this case, shown as a ratchet mechanism with a lever which can be activated but can, as mentioned, be any known type of release mechanism.
  • control unit 50 can also be connected to sensors 64 which are independent of the vertical angle of the towing hook 10, for registration of the tilt angle and the trim angle when the boat is working on tasks such as, for example, anchor handling, where the towing wire 36 points downwards into the sea and does not affect the vertical angle of the towing hook 10.
  • sensors 64 which are independent of the vertical angle of the towing hook 10, for registration of the tilt angle and the trim angle when the boat is working on tasks such as, for example, anchor handling, where the towing wire 36 points downwards into the sea and does not affect the vertical angle of the towing hook 10.
  • the fastening hook 12 of the towing hook 10 acts as a normal hook to receive the loop of the towing rope 34.
  • the fastening hook is equipped with a double hook in the sense that the fastening hook 12 comprises upwardly projecting/outwardly projecting hook parts 12a, 12b so that an open groove 14 or slot between the hook parts is formed, as shown in figures 3 and 4.
  • a first wire disc 16 is inserted into the groove 14 of the fastening hook 12, on the same rotatable bolt 18 for the fastening hook 12, but so that the wire disc is hidden in the groove 14 and does not come into contact with the towing rope 34 when this is used.
  • the rotatable bolt 18 is placed so that the lower part of the fastening hook 12 and the wire disc 16 lie in an opening or recess 26 in the outer end of the turning arm 30.
  • the wire disc 16 is inserted so that the towing wire 36 will slide easily through the fastening hook groove 14 without wear on the fastening hook anywhere.
  • a detachable barrier in the form of a bolt 20 or the like can be mounted, possibly also with a corresponding second wire disc 21.
  • Figure 3 shows the fastening hook 12 with the second wire disc 21 fitted on the bolt 20, while figure 4 shows the fastening hook 12 without the second wire disc 21.
  • the bolt 20, or the bolt 20 together with the second wire disc 21 thus make up the detachable barrier.
  • the detachable bolt 20 is there to be able to be removed and make it possible to remove the towing wire 36 when the towing rope 34 shall be used and so that the towing hook 10 shall follow with the towing wire 36 vertically to the direction of the towing wire when used.
  • the bolt 20 ends in the form of a head and nuts are preferably mounted countersunk on a respective outside of the fastening bolt 12 so that it will not be able to cause wear on a towing rope 34 when used.
  • the winch drum 44 comprises a locking bolt or release mechanism corresponding to that of the towing hook, which holds the winch 40 until it is released by the automatic release system, or when the winch 40 is to be driven manually. This allows the winch 40 to hold all the towing forces it can be exposed to without the brake being applied.
  • the winch may be equipped with a water brake to control and regulate the speed when released.
  • the release mechanism on the winch 40 is connected to the control unit 50 in a wired connection with a wire 56 or is wirelessly connected.
  • the winch 40 only needs to have a small, limited traction force and can be used for in and out winding of the towing wire 36 when connecting and disconnecting the towing object and can have an automatic brake that works when it shall be driven and the towing safety is automatically disengaged.
  • the winch 40 can therefore be small and simple but should have a spooling device and should have its own separate empty zone at the end of the drum where the last 3-4 turns are laid before locking the winch drum 44, so that the towing wire is not damaged by large loads.
  • the towing wire end can be secured to the winch drum only for the permitted towing force so that it is released if the towing wire runs out to the end with too much force during automatic release.
  • the block discs 32,42 shown are preferably positioned so that the direction of the towing wire 36 in relation to the direction of the block disc is always the same regardless of the direction of the towing hook 10 and towards the winch drum 44 so that the towing wire, block discs, towing hook or winch are not exposed to undesired wear or influencing on the movement of the towing hook.
  • Control of the release system is executed with the help of the sensor 62 for horizontal movement of the hook and the sensor 60 for vertical movement of the towing hook, relative to the boat, located in the shafts 22,24 for the horizontal and vertical rotation of the towing hook 10.
  • the signals go to the control unit 50, which controls and regulates the release of the towing hook 10 and the winch 40.
  • the advantage with this is that the vertical exit angle of the towing unit depending on the length of the towing unit and the height of the attachment point on the towing unit can be easily reset by pressing registration with a button when the towing unit is tightened so that the danger angles are adjusted automatically in relation to this.
  • manual mechanical release is arranged in the usual way for both the towing hook and winch with automatic selection of what is triggered based on what is used, towing hook or winch.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Fats And Perfumes (AREA)

Abstract

La présente invention porte sur un système de libération sur un bateau d'approvisionnement ou un remorqueur comprenant un crochet de remorquage (10) monté de manière rotative et qui est pourvu d'un crochet de fixation (12) pour recevoir un câble de remorquage (34), le crochet de fixation (12) étant équipé d'une rainure traversante (14) ouverte pour recevoir un câble de remorquage (36) qui s'étend jusqu'à un treuil (40). Le crochet de remorquage (10) comprend un ou plusieurs capteurs qui enregistrent la direction angulaire verticale et/ou horizontale du crochet de remorquage par rapport au bateau, lesdits capteurs étant reliés à une unité de commande (50) qui, sur la base des directions angulaires enregistrées sur le crochet de remorquage (10), est agencée pour activer un mécanisme de libération (28) sur le crochet de remorquage (10) pour libérer le câble de remorquage (34) du crochet de fixation (12) ou pour activer un mécanisme de libération sur le treuil (40) qui libère le câble de remorquage (36).
PCT/NO2021/050125 2020-05-20 2021-05-20 Système de libération pour bateau d'approvisionnement ou remorqueur WO2021235943A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP21808597.5A EP4168303A1 (fr) 2020-05-20 2021-05-20 Système de libération pour bateau d'approvisionnement ou remorqueur

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20200598 2020-05-20
NO20200598A NO346340B1 (no) 2020-05-20 2020-05-20 Utløsersystem for en supply- eller slepebåt.

Publications (1)

Publication Number Publication Date
WO2021235943A1 true WO2021235943A1 (fr) 2021-11-25

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PCT/NO2021/050125 WO2021235943A1 (fr) 2020-05-20 2021-05-20 Système de libération pour bateau d'approvisionnement ou remorqueur

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EP (1) EP4168303A1 (fr)
NO (1) NO346340B1 (fr)
WO (1) WO2021235943A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114421235A (zh) * 2022-03-28 2022-04-29 武汉中科海讯电子科技有限公司 一种拖缆自动化对接与释放装置
CN114802600A (zh) * 2022-05-12 2022-07-29 中船黄埔文冲船舶有限公司 一种弹簧拖钩的支撑组件及船舶

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1597156A (en) * 1971-07-14 1981-09-03 Brown Lenox & Co Ltd Hook assembly
EP0176189A1 (fr) * 1984-08-17 1986-04-02 Faredoon Rustom Mistry Remorqueur pour assister un bateau plus grand
SU1257013A2 (ru) * 1984-01-09 1986-09-15 Предприятие П/Я В-8745 След ща система автоматической отдачи буксирного гака судов
US20050284355A1 (en) * 2002-05-09 2005-12-29 Thomas Toth Apparatus and method for securing a mooring line of a vessel

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6023279Y2 (ja) * 1980-05-09 1985-07-10 日立造船株式会社 タグライン係止装置
JPS62240292A (ja) * 1986-04-14 1987-10-21 カヤバ工業株式会社 タグロ−プの係止装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1597156A (en) * 1971-07-14 1981-09-03 Brown Lenox & Co Ltd Hook assembly
SU1257013A2 (ru) * 1984-01-09 1986-09-15 Предприятие П/Я В-8745 След ща система автоматической отдачи буксирного гака судов
EP0176189A1 (fr) * 1984-08-17 1986-04-02 Faredoon Rustom Mistry Remorqueur pour assister un bateau plus grand
US20050284355A1 (en) * 2002-05-09 2005-12-29 Thomas Toth Apparatus and method for securing a mooring line of a vessel

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114421235A (zh) * 2022-03-28 2022-04-29 武汉中科海讯电子科技有限公司 一种拖缆自动化对接与释放装置
CN114802600A (zh) * 2022-05-12 2022-07-29 中船黄埔文冲船舶有限公司 一种弹簧拖钩的支撑组件及船舶
CN114802600B (zh) * 2022-05-12 2023-06-23 中船黄埔文冲船舶有限公司 一种弹簧拖钩的支撑组件及船舶

Also Published As

Publication number Publication date
NO346340B1 (no) 2022-06-13
EP4168303A1 (fr) 2023-04-26
NO20200598A1 (fr) 2021-11-22

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