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WO2023079351A1 - Unité de verrouillage de chaumard - Google Patents

Unité de verrouillage de chaumard Download PDF

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Publication number
WO2023079351A1
WO2023079351A1 PCT/IB2021/060308 IB2021060308W WO2023079351A1 WO 2023079351 A1 WO2023079351 A1 WO 2023079351A1 IB 2021060308 W IB2021060308 W IB 2021060308W WO 2023079351 A1 WO2023079351 A1 WO 2023079351A1
Authority
WO
WIPO (PCT)
Prior art keywords
locking
stopper plate
support shaft
rotating support
locking unit
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.)
Ceased
Application number
PCT/IB2021/060308
Other languages
English (en)
Inventor
Nikolai SKATŠKOV
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.)
Src Group AS
Original Assignee
Src Group 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 Src Group AS filed Critical Src Group AS
Priority to EP21810742.3A priority Critical patent/EP4429942B1/fr
Priority to PCT/IB2021/060308 priority patent/WO2023079351A1/fr
Publication of WO2023079351A1 publication Critical patent/WO2023079351A1/fr
Priority to NO20230658A priority patent/NO348852B1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • B63B21/04—Fastening or guiding equipment for chains, ropes, hawsers, or the like
    • B63B21/10—Fairleads

Definitions

  • This invention relates in general to the field of marine mooring equipment and, in particular, to fairleads used for guiding a mooring line.
  • Fairleads are an important tool in marine environments to guide a line, e.g. a rope, cable or chain, around an object, or to prevent lateral movement of the line.
  • Some fairleads known as moveable fairleads or rotating fairleads, are capable to rotating around a vertical axis to allow for changes in the direction of the line, without having an angle in the line.
  • Figure 1 is a schematic diagram showing a moveable fairlead 1 according to a prior art implementation.
  • the moveable fairlead 1 is generally attached to the hull of a floating vessel such as, for example, a ship or floating platform.
  • the moveable fairlead comprises a pair of brackets 10, a rotating support shaft 20 and a guide member 30.
  • the brackets 10 are for attachment to the floating vessel.
  • the brackets 10 may be welded to the hull of the floating vessel.
  • the rotating support shaft 20 is coupled to the one or more brackets and configured to rotate with respect to the brackets 10.
  • a single rotating support shaft 20 may extend vertically between the two brackets 10, or a pair of rotating support shafts may support the guide member 30 between them.
  • the guide member 30 typically includes a guide wheel 31 or a fixed guide channel for the cable or chain to pass through.
  • the guide member 30 can include connecting plates 32 e.g. to connect the guide wheel with the rotating support shaft 20.
  • the guide member is attached to the rotating support shaft(s) and is configured to rotate with the rotating support shaft(s). In this way, the fairlead 1 can rotate around a vertical axis and can guide the line without having an angle in the line.
  • a problem with these moveable fairleads arises where an offshore unit or floating vessel is not anchored and is moving or being moved, and one or more fairleads attached to an exterior of the hull are rotating freely. Freely rotating fairleads can often slam against the floating vessel, causing damage to the vessel and/or the fairlead itself due to the waves and movement of the vessel.
  • the present invention aims to address these problems in the state of the art.
  • a locking unit for a moveable fairlead on a floating vessel according to claim 1 .
  • a third aspect of the present invention there is provided a method of retrofitting a locking unit to a moveable fairlead on a floating vessel according to claim 12.
  • Figure 1 is a schematic diagram showing a moveable fairlead according to a prior art implementation
  • Figure 2 is a schematic diagram showing a locking unit according to an embodiment
  • Figure 3 is a schematic diagram showing a stopper plate according to an embodiment
  • Figure 4 is a schematic diagram showing a locking pin according to an embodiment
  • Figure 5 is a side-elevation view showing a locking unit according to an embodiment
  • Figure 6 is a cross-section view showing a locking unit according to an embodiment.
  • Figure 7 is a flowchart showing a method of retrofitting a braking unit according to an embodiment.
  • the present invention relates to a locking unit for attachment to a moveable fairlead, and a method of retrofitting the locking unit to a moveable fairlead.
  • the locking unit prevents movement of the fairlead by passing a locking pin through a locking hole in a stopper plate.
  • FIG. 2 of the accompanying drawings shows a locking unit 100 for a moveable fairlead 1 on a floating vessel according to an embodiment.
  • the locking unit 100 comprises a stopper plate 110, a locking pin 120 and a locking actuator 130.
  • the stopper plate 110 is configured for coupling to a rotating support shaft of the moveable fairlead 1.
  • the stopper plate 110 is configured to be coupled in a position where an axis of the rotating support shaft is normal to the stopper plate 110.
  • the stopper plate is of part-disc shape.
  • the stopper plate 110 includes one or more locking holes 111 extending through the stopper plate 110.
  • the locking pin 120 is configured to pass through one of the locking holes 111 in the stopper plate 110.
  • the locking actuator 130 is configured to move the locking pin 120 into a locked position where the locking pin 120 extends through one of the locking holes 111 in the stopper plate 110.
  • the locking unit 100 can prevent swinging of a moveable fairlead 1 which has the potential to cause damage to the floating vessel or the fairlead 1 itself.
  • the locking unit 100 can be provided in a modular unit which can be retrofitted to an existing fairlead 1 in situ on a floating vessel.
  • the locking unit 100 can be attached or retrofitted to any form of floating vessel, e.g. a ship or floating platform.
  • the locking unit 100 can be made compatible with any of the large variety of moveable fairleads used on such floating vessels.
  • the locking unit 100 can be attached to a fairlead 1 with a guide wheel or guide channel, with or without connecting side plates, and with a single support shaft or a pair of support shafts supporting a guide member in between.
  • the locking unit 100 can be made compatible with any other variation in form or size of moveable fairlead 1 .
  • the stopper plate 110 may be configured to directly attach to the rotating support shaft. In some examples, the stopper plate 110 may be configured to attach to a guide member which is attached to the rotating support shaft and configured to rotate with the rotating support shaft. For example, the stopper plate 110 may be configured to attach to a connecting side plate which is coupled to the rotating support shaft, or supported between two rotating support shafts, and supports a guide wheel.
  • the stopper plate 110 may have a semi-circular form with a straight edge and a semi-circular edge.
  • the stopper plate 110 may be configured to be coupled to the rotating support shaft at a mid-point of the straight edge.
  • the stopper plate 110 can be directly attached at a central point of rotation to a rotating element of the moveable fairlead 1. As the stopper plate 110 is rotated by movement of the moveable fairlead 1 , the stopper plate 110 can pass the locking pin 120 in a semi-circular arc.
  • Fig 4 shows a schematic diagram of a stopper plate 110 according to an embodiment.
  • the stopper plate 110 may be shaped for attachment to the moveable fairlead 1.
  • the stopper plate 110 may include a notch configured to fit around the rotating support shaft or any other rotating element of the moveable fairlead 1.
  • the stopper plate 110 may be formed from steel, or any material suitable for marine construction.
  • the stopper plate 110 may include a plurality of locking holes 111.
  • the locking holes 111 may be spaced along a circular arc of the stopper plate 110 arranged to be centred on the axis of the rotating support shaft. In this way, as the stopper plate 110 is rotated by movement of the moveable fairlead 1 , locking pin 120 will pass over each of the locking holes 111 in the circular arc.
  • each point on the circular arc may be formed to slope towards an adjacent locking hole. In this way, when the locking actuator 130 moves the locking pin 120 towards the locking position, the locking pin 120 will either pass directly through a locking hole 111 , or will contact a sloped portion of the circular arc.
  • pressure applied between the locking pin 120 and the sloped portion may force the stopper plate 110 to rotate until the adjacent locking hole 111 aligns with the locking pin 120.
  • the locking pin 120 and/or locking actuator 130 may be configured to flex or move laterally. Pressure applied between the locking pin 120 and the sloped portion may cause the locking pin 120 to flex and/or move laterally until the locking pin 120 aligns with the adjacent locking hole.
  • a restoring force e.g. a spring or internal flexion
  • each point may be formed to slope towards the nearest adjacent locking hole.
  • a sloping profile along the circular arc may be biased (e.g. a 'sawtooth' profile) to bias the stopper wheel in one direction over the other.
  • the sloping profile may be formed by machining or casting the stopper plate 110.
  • the stopper plate 110 may be formed from any sector of a circle e.g. subtending an angle of more or less than 180, and configured to be attached at the centre point.
  • the stopper plate 110 may include a curved edge passing substantially through the central point.
  • the semicircular edge may be smooth or may be formed or shaped as required.
  • the locking pin 120 may include a roller 121 arranged to contact the stopper plate 110.
  • Figure 4 shows a schematic diagram of the locking pin 120, according to an embodiment.
  • the roller 121a may be implemented with a wheel and axle arrangement.
  • the roller 121 b may be implemented with a ball in socket mechanism.
  • the stopper plate 110 may be configured to extend through a socket 140 formed in a hull of the floating vessel.
  • the locking pin 120 and locking actuator 130 may be arranged in an interior of the hull.
  • FIG. 5 is a side-elevation view showing a locking unit 100 according to an embodiment.
  • the locking unit 100 is shown from an interior of the hull.
  • a socket 140 may be formed in the hull and the stopper plate 110 can extend through the socket 140 to the interior of the hull.
  • a portion of the stopper plate 110 furthest from an attachment point of the stopper plate 110 may extend through the socket 140, i.e. a portion of the semicircular edge may be inside the hull of the floating vessel.
  • the locking pin 120 and locking actuator 130 may be arranged below the stopper plate 110, as shown. Alternatively, the locking pin 120 and locking actuator 130 may be arranged above the stopper plate 110.
  • the socket 140 may be rectangular, as shown. The size of the socket 140 may be approximately the same as the portion of the stopper plate 110 extending through. In some examples, the socket 140 may be sized such that the full stopper plate 110 will not pass through. Alternatively, the socket 140 may be any shape or size which allows at least a portion of the plate to pass through. In some examples, the socket 140 may be already present on the hull, e.g. a maintenance hatch for the fairlead 1 , or the socket 140 may be cut into the fairlead 1 in order to retrofit the locking unit 100.
  • the socket 140 may include a seal, e.g. a rubber seal arranged to fit tightly against the stopper plate 110 and allow rotational movement while preventing water from entering the hull.
  • the locking unit 100 may be separately sealed to prevent the ingress of water from inside the socket 140.
  • the locking unit 100 can be protected from seawater.
  • the locking unit 100 can be isolated from seawater. In this way moving/mechanical parts of the locking unit 100 can be protected from corrosion.
  • the locking unit 100 can be accessed more easily from the interior of the floating vessel, to maintain or repair components of the locking unit 100.
  • the locking unit 100 may be positioned on an exterior of the floating vessel e.g. where it is not possible to provide a socket 140 in the hull of the floating vessel. Individual components of the locking unit 100, e.g. the locking actuator 130 may be individually sealed to isolate them from seawater.
  • the locking unit 100 may further include a rectangular enclosure 150 attached to the socket 140.
  • the enclosure 150 may be arranged to receive the stopper plate 110 within.
  • the locking pin 120 may be configured to pass through an opening in an upper and/or lower wall of the enclosure 150.
  • Figure 6 is a cross-section view showing a locking unit 100 according to an embodiment.
  • the enclosure 150 may be a rectangular box shape which is open at one side.
  • the open side of the enclosure 150 may be configured to attach to an interior side of the hull of the floating vessel, with the socket 140 within the open side. In this way, the interior of the enclosure 150 may be open to the exterior of the floating vessel.
  • the enclosure 150 may include one or more openings in an upper and/or lower wall of the enclosure 150. Each opening may be configured to allow the locking pin 120 to pass through the opening. In some examples, the enclosure 150 may include a pair of openings positioned in opposition on the upper and lower walls, such that the locking pin can pass fully through the enclosure 150. Alternately, in some examples, only one opening is provided such that the locking pin 120 can pass into the interior of the enclosure 150 to engage with the stopper plate 110.
  • At least one of the openings includes a shaft seal.
  • the shaft seal is configured to allow movement of the locking pin 120 through the opening and prevent water passing through the opening.
  • the seal may be a ring seal arranged within the opening and configured to fill a space around the locking pin 120.
  • the seal may include a closing mechanism configured to seal the opening when the locking pin 120 is removed from the opening.
  • the mechanical components of the locking unit 100 such as, for example, the locking actuator 130
  • the locking pin 120 can be mounted such that locking pin 120 is exposed to the interior of the enclosure 150 but the locking actuator 130 is isolated from the interior of the enclosure 150.
  • the enclosure 150 can fix a lateral position of the locking pin 120.
  • the locking pin 120 can resist or prevent lateral or rotational movement of the stopper plate 110 when the locking pin 120 is engaged with the stopper plate 110.
  • the locking actuator 130 may include one or more hydraulic cylinders.
  • the hydraulic cylinder allows for electronic control through a direct or remote operation. By using bi-directional hydraulics the locking actuator 130 can be activated or deactivated to control a locking function.
  • a one directional hydraulic cylinder may be used and the locking actuator 130 may be biased to a deactivated position e.g. by one or more springs. In this way, a fail-off mechanism can be provided. If required, a fail-on mechanism can be provided by reversing the bias/actuation direction.
  • the hydraulic cylinders can be controlled to position the locking pin 120 at a specified point along an axis of travel.
  • the locking actuator 130 may be implemented by other means e.g. an electric motor or pneumatic system, or a manual actuator may be used e.g. a pump or lever based actuator.
  • a manual actuator may be provided in addition to any other actuator as a failsafe in the event of a mechanical failure or power outage.
  • the locking unit 100 may include a locking controller to control the locking actuator 130.
  • the locking controller may be implemented by any suitable processor or processing unit.
  • processor may refer to a computational element that is operable to respond to and process instructions to perform operations.
  • the processor may be a microprocessor, a microcontroller, a complex instruction set computing (CISC) microprocessor, a reduced instruction set (RISC) microprocessor, a very long instruction word (VLIW) microprocessor, or any other type of processing circuit, for example as aforementioned.
  • the processor may be operated individually or as a part of a computation system.
  • the locking controller may be configured to activate the locking actuator 130, and/or deactivate the locking actuator 130.
  • the locking controller may also be configured to control the locking actuator 130 to move the locking pin 120 into a certain position.
  • the locking controller may be configured to control the locking actuator 130 to move the locking pin 120 upwards or downwards.
  • the locking controller provides improved control of a locking function, in a way which can be operated directly or remotely. Fine grained control over the timing and locking pin 120 positioning can be provided by the locking controller. Where a plurality of locking actuators 130 are provided, the locking controller can ensure synchronised control, improving locking efficiency and reducing component wear.
  • the locking controller may be remotely operable through a wired and/or wireless connection.
  • the locking controller may be operated from a central control point of the floating vessel, e.g. a bridge or cockpit.
  • the locking may be operated from a control point removed from the floating vessel.
  • the locking controller may be remotely operable through a connection including any selection or combination of suitable wired connections (e.g. serial, parallel, USB, ethernet etc.) and wireless connections (e.g. Bluetooth, Wi-Fi, cellular network, satellite network etc.).
  • the locking unit 100 By remotely operating, the locking unit 100 removes the need to reach the location of the fairlead 1 on an interior or exterior of the hull. In some cases, this can remove the need to raise the floating vessel out of the water, or reach the fairlead 1 underwater to control the locking unit 100.
  • the remote operation allows the synchronised operation of some or all of the fairleads. In this way, the locking unit 100 can be more responsive, e.g. to changing weather conditions, or the operation can be more effectively synchronised to a mooring/relocating operation of the floating vessel.
  • the locking controller may be operated directly, e.g. via a terminal or control panel co-located with the locking unit 100.
  • the locking unit 100 may include one or more braking pads 160 and a braking actuator 170.
  • the braking pads 160 may be configured to resist a rotational movement of the stopper plate 110.
  • the braking actuator 170 may be configured to move the braking pads 160 into a braking position where the braking pads 160 are in contact with the stopper plate 110.
  • the locking unit 100 can reduce swinging of a moveable fairlead 1 which has the potential to cause damage to the floating vessel or the fairlead 1 itself.
  • the locking unit 100 can reduce axial forces which act on the locking pin 120 during the locking, which have the potential to damage the locking pin 120.
  • Fig. 5 shows an example of a locking unit 100 with braking pads 160 and braking actuators 170 in position.
  • the braking pads 160 may be arranged in pairs above and below the stopper plate 110.
  • the braking pads 160 may be formed from steel, or any material suitable for marine construction.
  • the material of the stopper plate 110 and the braking pads 160 may be selected to avoid galvanic pairs, to prevent excess corrosion.
  • a braking unit of other types may be provided.
  • a braking element such as, for example, brake pads 160 or a braking belt, may be configured to engage with an edge of the stopper plate or engage the rotating support shaft directly.
  • the pads 160 may include one or more hydraulic cylinders for each of the one or more braking pads 160, or a hydraulic cylinder may be connected to multiple braking pads 160.
  • the pads 160 may include a shoe or shell configured to hold the braking pads 160.
  • the shoe or shell may be connected to the hydraulic cylinder or any other form of actuator.
  • the braking unit is capable of exerting a sufficiently large braking force on the stopper plate.
  • the locking unit 100 can allow for electronic control of the braking mechanism through a direct or remote operation, substantially as described above with respect to the locking actuator 130.
  • the pads 160 can be activated or deactivated to control a braking function by moving the braking pads 160 towards or away from the stopper plate 110.
  • a one directional hydraulic cylinder may be used and the pads 160 may be biased to a deactivated position e.g. by one or more springs. In this way, a fail-off mechanism can be provided. If required, a fail-on mechanism can be provided by reversing the bias/actuation direction.
  • the pads 160 may be implemented by other means e.g. an electric motor or pneumatic system, or a manual actuator may be used e.g. a pump or lever based actuator.
  • a manual actuator may be provided in addition to any other actuator as a failsafe in the event of a mechanical failure or power outage.
  • the moveable fairlead 1 comprises one or more brackets, a rotating support shaft, a guide member and a locking unit 100 substantially as described above.
  • the brackets are configured for attachment to a floating vessel.
  • the brackets may be welded to the hull of the floating vessel.
  • the moveable fairlead 1 may be attached to any form of floating vessel, e.g. a ship or floating platform.
  • the rotating support shaft is coupled to the one or more brackets and configured to rotate with respect to the brackets.
  • a single rotating support shaft may extend vertically between the two brackets, or a pair of rotating support shafts may support the guide member between them.
  • the guide member is attached to the rotating support shaft and is configured to rotate with the rotating support shaft.
  • the guide member may include a guide wheel or a fixed guide channel for a cable or chain to pass through.
  • the guide member may include one or more connecting plates e.g. to connect the guide wheel with the rotating support shaft.
  • the stopper plate 110 of the locking unit 100 is coupled to the rotating support shaft in a position where an axis of the rotating support shaft is normal to the stopper plate 110.
  • the locking unit 100 can prevent swinging of a moveable fairlead 1 which has the potential to cause damage to the floating vessel or the fairlead 1 itself.
  • the locking unit 100 can be provided in a modular unit which can be retrofitted to an existing fairlead 1 in situ on a floating vessel.
  • FIG. 7 of the accompanying drawings shows a flowchart representing a method of retrofitting a locking unit according to an embodiment. The method starts at step S11.
  • the method may include cutting a socket into the hull of a floating vessel.
  • the socket may be rectangular.
  • the size of the socket may be approximately the same as a portion of the stopper plate of the locking unit which is to be passed through the socket.
  • the socket may be sized such that the full stopper plate will not pass through.
  • the socket may be any shape or size which allows at least a portion of the plate to pass through.
  • the socket may include a seal, e.g. a rubber seal arranged to fit tightly against the stopper plate and allow rotational movement while preventing water from entering the hull.
  • the locking unit may be separately sealed to prevent the ingress of water from inside the socket.
  • a socket may be already present on the hull, e.g. a maintenance hatch for the fairlead.
  • the locking unit may be positioned on an exterior of the floating vessel e.g. where it is not possible to provide a socket in the hull of the floating vessel. Individual components of the locking unit, e.g. the locking actuator may be individually sealed to isolate them from seawater.
  • the method may include passing a portion of the stopper plate through a socket in a hull of the floating vessel, and positioning the locking pin and locking actuator adjacent to the portion of the stopper plate within the hull.
  • the locking unit By extending the stopper plate through the hull, and arranging the locking unit in the interior of the hull, the locking unit can be protected from seawater. For example, where the socket and/or locking unit is sealed or substantially sealed, the locking unit can be isolated from seawater. In this way moving/mechanical parts of the locking unit can be protected from corrosion. In addition, the locking unit can be accessed more easily from the interior of the floating vessel, to maintain or repair components of the locking unit.
  • the method includes coupling the stopper plate of the locking unit to a rotating support shaft of the moveable fairlead in a position where an axis of the rotating support shaft is normal to the stopper plate.
  • the stopper plate may be configured to directly attach to the rotating support shaft. In some examples, the stopper plate may be configured to attach to a guide member which is attached to the rotating support shaft and configured to rotate with the rotating support shaft. For example, the stopper plate may be configured to attach to a connecting side plate which is coupled to the rotating support shaft, or supported between two rotating support shafts, and supports a guide wheel.
  • the stopper plate may have a semi-circular form with a straight edge and a semi-circular edge.
  • the stopper plate may be configured to be coupled to the rotating support shaft at a mid-point of the straight edge.
  • the stopper plate can be directly attached at a central point of rotation to a rotating element of the moveable fairlead. As the stopper plate is rotated by movement of the moveable fairlead, the stopper plate can pass the locking pin in a semi-circular arc.
  • the stopper plate may be shaped for attachment to the moveable fairlead.
  • the stopper plate may include a notch configured to fit around the rotating support shaft or any other rotating element of the moveable fairlead.
  • the stopper plate may be formed from steel, or any material suitable for marine construction.
  • the stopper plate may include a plurality of locking holes.
  • the locking holes may be spaced along a circular arc of the stopper plate arranged to be centred on the axis of the rotating support shaft. In this way, as the stopper plate is rotated by movement of the moveable fairlead, locking pin will pass over each of the locking holes in the circular arc.
  • each point on the circular arc may be formed to slope towards an adjacent locking hole. In this way, when the locking actuator moves the locking pin towards the locking position, the locking pin will either pass directly through a locking hole or will contact a sloped portion of the circular arc.
  • pressure applied between the locking pin and the sloped portion may force the stopper plate to rotate until the adjacent locking hole aligns with the locking pin.
  • the locking pin and/or locking actuator may be configured to flex or move laterally. Pressure applied between the locking pin and the sloped portion may cause the locking pin to flex and/or move laterally until the locking pin aligns with the adjacent locking hole.
  • a restoring force e.g. a spring or internal flexion acting on the locking pin and/or locking actuator may cause the stopper plate to rotate until the locking pin returns to its original lateral position.
  • each point may be formed to slope towards the nearest adjacent locking hole.
  • a sloping profile along the circular arc may be biased (e.g. a 'sawtooth' profile) to bias the stopper wheel in one direction over the other.
  • the sloping profile may be formed by machining or casting the stopper plate.
  • the stopper plate may be formed from any sector of a circle e.g. subtending an angle of more or less than 180, and configured to be attached at the centre point.
  • the stopper plate may include a curved edge passing substantially though the central point.
  • the semi-circular edge may be smooth or may be formed or shaped as required.
  • the locking pin may include a roller arranged to contact the stopper plate.
  • the roller may be implemented with a wheel and axle arrangement.
  • the roller may be implemented with a ball in socket mechanism.
  • the method may include attaching a rectangular enclosure to the socket.
  • the enclosure may be arranged to receive the stopper plate within.
  • the enclosure may be a rectangular box shape which is open at one side.
  • the open side of the enclosure may be configured to attach to an interior side of the hull of the floating vessel, with the socket within the open side. In this way, the interior of the enclosure may be open to the exterior of the floating vessel.
  • the enclosure may include one or more openings in an upper and/or lower wall of the enclosure.
  • the locking pin may be configured to pass through one or more of the openings.
  • the openings may include seals configured to surround the locking pin, to isolate the locking actuator from the interior of the enclosure.
  • the mechanical components of the locking unit such as, for example, the locking actuator, can be isolated from seawater which may enter the hull through the socket.
  • the locking pin can be mounted such that locking pin is exposed to the interior of the enclosure but the locking actuator is isolated from the interior of the enclosure.
  • the enclosure can fix a lateral position of the locking pin. In this way, the locking pin can resist or prevent lateral or rotational movement of the stopper plate when the locking pin is engaged with the stopper plate.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Pressure Vessels And Lids Thereof (AREA)
  • Transmission Devices (AREA)

Abstract

L'invention concerne une unité de verrouillage pour un chaumard mobile, comprenant une plaque d'arrêt se couplant à un arbre de support rotatif du chaumard mobile, dans une position dans laquelle un axe de l'arbre de support rotatif est perpendiculaire à la plaque d'arrêt, la plaque d'arrêt comprenant un ou plusieurs trous de verrouillage s'étendant à travers la plaque d'arrêt, une tige de verrouillage traversant l'un des trous de verrouillage de la plaque d'arrêt ; et un actionneur de verrouillage qui déplace la tige de verrouillage dans une position verrouillée, dans laquelle la tige de verrouillage s'étend à travers l'un des trous de verrouillage de la plaque d'arrêt.
PCT/IB2021/060308 2021-11-08 2021-11-08 Unité de verrouillage de chaumard Ceased WO2023079351A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP21810742.3A EP4429942B1 (fr) 2021-11-08 2021-11-08 Unité de verrouillage de chaumard
PCT/IB2021/060308 WO2023079351A1 (fr) 2021-11-08 2021-11-08 Unité de verrouillage de chaumard
NO20230658A NO348852B1 (en) 2021-11-08 2023-06-07 Fairlead locking unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB2021/060308 WO2023079351A1 (fr) 2021-11-08 2021-11-08 Unité de verrouillage de chaumard

Publications (1)

Publication Number Publication Date
WO2023079351A1 true WO2023079351A1 (fr) 2023-05-11

Family

ID=78695749

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2021/060308 Ceased WO2023079351A1 (fr) 2021-11-08 2021-11-08 Unité de verrouillage de chaumard

Country Status (3)

Country Link
EP (1) EP4429942B1 (fr)
NO (1) NO348852B1 (fr)
WO (1) WO2023079351A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO20230062A1 (en) * 2022-03-22 2023-09-25 Moray Innovation As Fairlead locking system and method of operation
WO2023182889A1 (fr) * 2022-03-22 2023-09-28 Moray Innovation As Système de verrouillage de chaumard et procédé de fonctionnement

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999037531A2 (fr) * 1998-01-26 1999-07-29 Continental Emsco Company Guide-cable sous-marin demontable et procede correspondant
CN107364546A (zh) * 2017-05-31 2017-11-21 江苏马力德机械有限公司 一种船用起锚机
CN211922512U (zh) * 2020-03-27 2020-11-13 青岛浩赛机械有限公司 一种可导缆的双柱系缆桩

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CN107380349B (zh) * 2017-06-01 2020-07-14 武汉船用机械有限责任公司 一种导链装置

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CN107364546A (zh) * 2017-05-31 2017-11-21 江苏马力德机械有限公司 一种船用起锚机
CN211922512U (zh) * 2020-03-27 2020-11-13 青岛浩赛机械有限公司 一种可导缆的双柱系缆桩

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WO2023182889A1 (fr) * 2022-03-22 2023-09-28 Moray Innovation As Système de verrouillage de chaumard et procédé de fonctionnement

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