WO2014013724A1 - 船内取外し式スラスタ装置 - Google Patents
船内取外し式スラスタ装置 Download PDFInfo
- Publication number
- WO2014013724A1 WO2014013724A1 PCT/JP2013/004346 JP2013004346W WO2014013724A1 WO 2014013724 A1 WO2014013724 A1 WO 2014013724A1 JP 2013004346 W JP2013004346 W JP 2013004346W WO 2014013724 A1 WO2014013724 A1 WO 2014013724A1
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- WO
- WIPO (PCT)
- Prior art keywords
- thruster
- seat
- storage seat
- lock
- storage
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
- B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
- B63H5/125—Arrangements on vessels of propulsion elements directly acting on water of propellers movably mounted with respect to hull, e.g. adjustable in direction, e.g. podded azimuthing thrusters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B85/00—Dismantling or scrapping vessels
Definitions
- the present invention relates to a thruster device capable of removing a thruster used for holding a fixed point or a bearing of an excavation ship, a floating-type production facility or the like into a ship.
- the thrusts and directions of the plurality of thrusters are controlled so as to hold the fixed point using a GPS signal even under stormy weather.
- a drilling ship or the like is provided with about 4 to 6 thrusters, and can hold a fixed point.
- the thruster may require a failure due to aging or accidental maintenance in addition to regular maintenance.
- the excavation ship or the like is in operation, for example, it is necessary to maintain a state where the seabed is excavated by an excavation drill, and the fixed point cannot be left. For this reason, when it becomes necessary to check and repair the thruster, there is one in which the thruster can be removed from the outboard water and replaced (see, for example, Patent Document 1).
- Patent Document 1 in order to remove the thruster underwater, it is necessary to perform underwater removal work by a diver. This underwater operation requires difficult operations such as attaching and detaching a plurality of wires necessary for handling the thruster underwater.
- the lifting device also requires a double lifting device for inboard and outboard use.
- the thruster removal work cannot be performed depending on the sea weather conditions outside the ship, the removal work may be restricted.
- the thruster is located above the draft surface (in this specification and in the claims, “inboard” A device that can be pulled up to the inside of the structure above the draft surface has been proposed.
- a ship in which a thruster, a thruster driving device and a set of attached devices are built in a vertically movable cylinder, and the entire cylinder is lifted and lowered by a rack and pinion drive system or a hydraulic cylinder drive system.
- a rack and pinion drive system a pinion is provided on the lifting body side so that the rack on the hull side can be extended upward, and the thruster is pulled up above the draft surface by the pinion along the rack.
- a raising / lowering cylinder is suspended under a deck, and a raising / lowering body is raised / lowered by this raising / lowering cylinder (for example, refer patent document 2).
- the present invention provides a thruster device that can remove a thruster of an excavating ship or the like into a ship above the draft surface by a simple handling device so that it can be inspected and repaired at an offshore operating point. With the goal.
- the present invention provides a thruster arrangement portion provided at a predetermined position of a hull that opens in the vertical direction, a thruster projecting downward from a lower opening portion of the thruster arrangement portion, and the thrusters and thrusters.
- a thruster device comprising: a storage seat for storing the drive device in the thruster arrangement portion; a mounting seat provided at a hull-side fixing position of the storage seat; and a fixing means for fixing the storage seat to the mounting seat.
- the thruster arrangement portion is covered with a wall surface forming a part of the hull structure, and the wall surface holds the storage seat on the mounting seat when the connection by the fixing means is released.
- the locking device is configured to be able to operate and release the locked state from the upper part of the thruster arrangement portion.
- the “hull” in this specification and claims refers to a structure floating on the sea, such as a drilling ship, a floating production facility, and a shuttle tanker.
- the fixing means may be configured to be attachable / detachable to / from the hull structure at a plurality of locations around the containment seat from within the thruster arrangement portion.
- the attachment of the fixing means which fixes the storage seat of a thruster, removal work, pre-lifting preparatory work, and post-processing work after hanging can be performed in the dry environment in a thruster arrangement part.
- the locking device has a lock metal that engages with the storage seat at a flange portion provided around the storage seat, and a transmission shaft that is connected to the lock hardware and extends vertically on the wall surface is arranged around the axis.
- the lock hardware may be rotated around the transmission shaft to rotate and rotate, so that the locked state is activated / released.
- the lock metal can be rotated and the locked state can be operated / released by rotating the transmission shaft extending vertically on the wall surface of the thruster arrangement portion.
- the lock device includes a wedge seat disposed on an upper surface of a flange portion provided around the storage seat, and a lock metal member provided on the hull structure and having an engagement surface that engages with the wedge seat.
- the engagement surface between the wedge seat and the lock hardware may be formed with an inclination angle equal to or less than a friction angle at which a wedge effect is obtained.
- the lock metal of the locking device provided in the hull side is rotationally driven and the engagement surface of this lock metal is engaged with the wedge seat, the wedge seat is stabilized by the lock hardware due to the wedge effect. And can be locked. Moreover, because of the wedge effect, when the load is applied upward, the self-lock is activated, so that the locking device can be a simple mechanism.
- lock device is configured such that the lock hardware rotates in a horizontal direction and engages with the wedge seat, and the thruster arrangement portion rotates to activate and release the lock hardware of the lock device.
- Drive means may be provided in the upper part, and an expansion joint may be provided between the lock device and the rotation drive means of the lock device.
- the rotation drive means since the upward load can be prevented from acting on the rotation drive means by the expansion joint, the rotation drive means only needs to transmit the rotational force to the lock device, and the rotation drive means can be a simple mechanism. it can.
- the lock device may include a drive unit that engages the lock metal piece with a wedge seat, and the drive unit may include a drive unit that drives the lock metal piece with fluid pressure.
- a rotating ram is used as a configuration for rotationally driving with fluid pressure.
- the lock hardware can be rotated by mechanical drive, and a plurality of lock hardware can be rotated at the same time.
- the flange portion of the containment seat may include a sealing material that contacts the mounting seat around the fixing means, and the lock device may be disposed so as to face the strength member of the containment seat.
- the part with a small amount of bending of the up-and-down direction in a flange part is hold
- the amount of bending of a flange part is restrained small, and the compression return amount of the sealing material provided in this flange part is reduced. By keeping it small, the sealing performance can be ensured.
- the thruster arrangement part operates the up-and-down guide extending in the vertical direction for guiding the storage seat with the thruster attached in a manner that can be lifted or lowered in the thruster arrangement part, and operates the locking device.
- the locking device is released by the driving means in the thruster arrangement portion, and the storage seat with the thruster attached can be stably moved up and down along the lifting guide.
- the thruster arrangement portion may have at least two lifting guides at positions facing the center of the storage seat.
- the thruster and the storage seat can be moved up and down stably in the thruster arrangement portion, and even a large thruster can be stably removed and installed from the ship.
- the mounting seat has insertion guides provided at at least two locations for guiding the mounting seat to a predetermined position when the storage seat is suspended, and the thruster disposing portion has an opening having a rectangular cross section in the horizontal direction.
- the at least two elevating guides are disposed on opposing wall surfaces of the thruster arrangement portion on the short side of the opening, and the insertion guides provided at the at least two locations are on the short side of the opening. May be disposed on the opposing mounting seat surface.
- the fixing means includes a fixing bolt fixed to the mounting seat and a bolt hole provided in the storage seat, and the insertion guide includes an insertion guide pin fixed to the mounting seat, and the storage seat.
- the clearance gap between the raising / lowering guide and the raising / lowering guide metal fitting provided in the flange part of the storage seat By setting the gap with the hole to a predetermined relationship, the position of the bolt hole is first positioned by the insertion guide pin even if the fixing bolt is a stud bolt. Therefore, the storage seat can be positioned on the mounting seat without contacting the fixing bolt and the bolt hole of the flange portion.
- a thruster device capable of inspecting and repairing a thruster provided in an excavation ship or the like by pulling it up into the ship above the draft surface at an offshore operating point.
- FIG. 1 is an overall side view of an inboard detachable thruster apparatus according to an embodiment of the present invention.
- FIG. 2 is an enlarged cross-sectional view taken along the line II-II shown in FIG.
- FIG. 3 is an enlarged sectional view taken along the line III-III shown in FIG. 4A is an enlarged side view of the lifting guide shown in FIG. 4B is an enlarged front view of the lifting guide shown in FIG. 4A.
- FIG. 5 is an enlarged view of a portion V shown in FIG. 6A is an enlarged side view showing another example of the lifting guide shown in FIG. 6B is an enlarged front view of the lifting guide shown in FIG. 6A.
- FIG. 1 is an overall side view of an inboard detachable thruster apparatus according to an embodiment of the present invention.
- FIG. 2 is an enlarged cross-sectional view taken along the line II-II shown in FIG.
- FIG. 3 is an enlarged sectional view taken along the line III-III shown in FIG. 4A is an enlarged
- FIG. 7A is an enlarged plan view showing a gap with the lifting guide hardware at the position of the upper lifting guide shown in FIG. 6B.
- FIG. 7B is an enlarged plan view showing a gap with the lifting guide hardware at the position of the lower lifting guide shown in FIG. 6B.
- FIG. 8 is an enlarged front view showing another example of the lifting guide hardware shown in FIG.
- FIG. 9 is a plan view of the lifting guide hardware shown in FIG. 10 is an enlarged cross-sectional view of a portion provided with a fixing bolt as the fixing means shown in FIG. 11 is an enlarged cross-sectional view of a portion where the bolt hole positioning insertion guide pin shown in FIG. 3 is provided.
- 12 is a front view of the locking device shown in FIG.
- FIG. 16A is a side view of the inboard removal procedure of the thruster device shown in FIG.
- FIG. 16B is a side view showing the inboard removal procedure of the thruster device following FIG. 16A.
- FIG. 17A is a side view illustrating a procedure for removing the thruster device from the ship following FIG.
- FIG. 17B is a side view showing a procedure for removing the thruster device from the ship following FIG. 17A.
- FIG. 18A is a side view of a procedure for mounting the thruster device shown in FIG.
- FIG. 18B is a side view showing the installation procedure of the thruster device in the ship following FIG. 18A.
- FIG. 19A is a side view showing a procedure for mounting the thruster device in the ship following FIG. 18B.
- FIG. 19B is a side view showing a procedure for installing the thruster device in the ship following FIG. 19A.
- the inboard detachable thruster apparatus 1 of this embodiment is provided with a thruster arrangement portion 10 that is open in a vertical direction at a predetermined position of a hull 2 and is provided at the bottom of the thruster arrangement portion 10.
- the thruster 3 is arranged so as to protrude downward from the lower opening 11.
- the thruster arrangement portion 10 has a rectangular cross section in the horizontal direction, is formed from the upper opening portion 12 to the lower portion with the same shape cross section, and the lower opening portion 11 having a smaller cross sectional area is formed at the lower end. .
- the wall surface 13 around the thruster placement unit 10 is also the hull structure 2.
- the hull 2 and the hull structure 2 are the same structures, the same code
- the thruster 3 is provided in a storage seat 20 for storing the thruster 3 and the thruster driving device (motor) 4.
- the storage seat 20 is formed in an outer shape that can move in the vertical direction in the internal space 17 of the thruster placement portion 10.
- the lower portion of the storage seat 20 is formed in a size having a predetermined gap from the lower opening 11 formed at the lower end of the thruster arrangement portion 10.
- the lower opening 11 is formed in the structure 14 having a predetermined thickness at the bottom of the hull.
- the upper surface of the lower opening 11 serves as a mounting seat 15 for fixing a flange portion 21 provided around the storage seat 20.
- the bottom surface of the structural portion 14 is a ship bottom material 16.
- the storage seat 20 is attached in a state where the lower part enters the structure part 14 of the lower opening 11, and the thruster 3 protrudes downward from the ship bottom.
- the storage seat 20 is provided with a storage portion 22 above the flange portion 21 that is fixed to the mounting seat 15, and the drive unit 4 is provided above the storage portion 22.
- the thruster 3 of this embodiment is attached to the lower surface of the storage seat 20, and the drive shaft 5 is connected to the drive device 4 through the inside of the storage portion 22.
- illustration of components other than the drive device 4 is omitted.
- the thruster 3 can be removed integrally with the storage seat 20 by removing the flange portion 21 of the storage seat 20 from the mounting seat 15 on the hull side.
- a locking device 30 is provided.
- a plurality of locking devices 30 are provided around the thruster arrangement unit 10.
- Each locking device 30 is provided with a transmission shaft 31 along the wall surface 13 of the thruster placement unit 10 and extends to the upper part of the thruster placement unit 10.
- the transmission shaft 31 is supported by a plurality of bearings 32 provided on the wall surface 13, and is connected so as to be continuous in the vertical direction of the thruster arrangement portion 10 by a joint 33 provided at an intermediate portion.
- rotational drive means for operating and releasing the lock device 30 is provided on the upper part of the transmission shaft 31.
- the lock device 30 is configured so that an operator rotates an operation lever 55 (FIG. 17A) serving as a rotation driving unit provided on the upper portion of the thruster arrangement unit 10 via a transmission shaft 31.
- the lock can be activated / released.
- the structure in which the transmission shaft 31 is rotated by the operation lever 55 and the lock metal piece 34 of the lock device 30 is rotated as will be described later is the rotation driving means of the lock device 30.
- a configuration for rotating the transmission shaft 31 a configuration in which the transmission shaft 31 is rotationally driven by fluid pressure, such as a rotating ram (not shown), may be used.
- a mechanically driven configuration such as a rotating ram, for example, the plurality of transmission shafts 31 can be rotated simultaneously.
- the rotation driving means for actuating / releasing the lock device 30 by the rotation operation has been described.
- a linear operation for moving the transmission shaft 31 in the vertical direction In some cases, a driving means that is actuated / released is used, and the driving means may be determined according to the configuration of the locking device.
- a lifting guide 40 is provided on the wall surface 13 of the thruster arrangement portion 10 in the vertical direction.
- the raising / lowering guide 40 is provided so that it may continue from the lower part to the upper part of the thruster arrangement
- the storage seat 20 is guided in the vertical direction in the thruster placement portion 10 along the lifting guide 40 so that the thruster 3 can be moved up and down integrally with the storage seat 20.
- a plurality of suspension guides 41 are provided above the thruster placement unit 10 when the storage seat 20 taken out from the thruster placement unit 10 is suspended.
- the suspension guide 41 has an upper end formed in an inclined portion in the same manner as an elevating guide 40 described later (FIG. 1).
- the elevating guide 40 is provided at two locations on the opposing wall surface 13 of the thruster placement portion 10 formed in a rectangular cross section, and is continuous 2 from the lower portion to the upper portion of the thruster placement portion 10. It becomes the elevating guide 40 of the strip.
- the lifting guide 40 is provided on a short side wall surface (left and right wall surface) 13 having a rectangular cross section. By providing the elevating guide 40 on the short side, the distance between the elevating guides 40 is increased as the distance between the long side wall surfaces (front and rear wall surfaces) so that a stable guide can be achieved. With this lifting guide 40, the lifting guide hardware 23 provided on the flange portion 21 (two-dot chain line) of the storage seat 20 is guided by the opposing wall surface 13 of the thruster placement portion 10.
- a plurality of suspension guides 41 provided on the upper side of the thruster arrangement unit 10 are provided around the thruster arrangement unit 10.
- two are provided on each surface of the thruster arrangement portion 10 having a rectangular cross section.
- the suspension guide 41 is provided so as to have a predetermined gap from the periphery of the flange portion 21 of the storage seat 20.
- a two-dot chain line flange portion 21 shown in FIG. 2 can be inserted into the central portion of the thruster arrangement portion 10.
- the storage seat 20 to which the thruster 3 is attached is provided with the center of the storage portion 22 at a position displaced forward from the center.
- the housing seat 20 has a flange portion 21 provided around it fixed to the mounting seat 15 by a plurality of fixing bolts (fixing means) 60.
- the fixing bolt 60 can be attached / detached from the inside of the thruster arrangement portion 10.
- FIG. 3 shows a part of the plurality of fixing bolts 60.
- the fixing bolts 60 are provided at equal intervals around the entire circumference along the dashed line in the figure.
- the storage seat 20 is connected by a web material 26 between a face material 24 provided on the same surface as the flange portion 21 and a bottom plate material 25 (FIG. 1) provided on the lower surface.
- the face material 24 is an opening 27 for weight reduction in a portion other than the portion where the web material 26 is provided.
- the face member 24 and the web member 26 form a girder member 28 that is a strength member.
- a plurality of the locking devices 30 are provided around the mounting seat 15.
- the locking device 30 of this example is provided at three locations on each wall surface 13 having a rectangular cross section.
- the locking device 30 is provided at an opposing position on an extension line of the portion of the girder 28 where the web material 26 is provided, and the structural portion of the storage seat 20 is held by the locking device 30. Even if the flange portion 21 of the storage seat 20 bends up and down due to water pressure or the like by providing the lock device 30 at an opposing position on the extended line of the portion of the beam member 28, it is stable at a portion where the amount of bending is small. It can be held.
- the mounting seat 15 of the wall surface 13 provided with the lifting guide 40 is provided with an insertion guide 70 so that the storage seat 20 inserted into the thruster placement portion 10 is disposed at a predetermined position of the mounting seat 15. Yes.
- the insertion guide 70 is provided on the mounting seat 15 at a position facing the lower opening 11. Details of the insertion guide 70 will be described later.
- the elevating guide 40 is provided on both the left and right sides on the substantially center line of the storage portion 22 whose center is displaced as described above. Accordingly, the vicinity of the center of gravity in the front-rear direction of the storage seat 20 and the thruster 3 is guided.
- the lifting guide 40 is provided so as to protrude from the wall surface 13 of the thruster arrangement portion 10 into the internal space 17.
- the lifting guide 40 is supported by a lifting guide support member 42 provided on the wall surface 13 of the thruster placement unit 10.
- the guide part 43 is formed in the upper end.
- the guide portion 43 is formed on an inclined surface whose width direction and wall surface direction are reduced upward, so that the flange portion 21 of the storage seat 20 can be easily inserted from above.
- the lifting guide hardware 23 guided by the lifting guide 40 is formed in a U shape so as to be guided in three directions by the lifting guide 40.
- the lifting guide hardware 23 is fixed to the flange portion 21 of the storage seat 20.
- the gap between the lifting guide hardware 23 and the lifting guide 40 the left-right direction is a gap Cg, and the front-rear direction is a gap Cg.
- the lifting guide 45 shown in FIGS. 6A and 6B is an example different from the lifting guide 40 shown in FIGS. 4A and 4B.
- the same components as those in FIGS. 4A and 4B will be described with the same reference numerals.
- the elevating guide 45 in this example includes a lower elevating guide 46 and an upper elevating guide 47.
- the upper elevating guide 47 is the same as the elevating guide 40 shown in FIGS. 4A and 4B, but the lower elevating guide 46 has a narrower gap Cg with the elevating guide hardware 23.
- the upper end of the lower elevating guide 46 is cut off at an angle so that the elevating guide hardware 23 can be easily transferred from the upper elevating guide 47 to the lower elevating guide 46 during suspension.
- Other configurations are the same as those of the elevating guide 40, and thus are denoted by the same reference numerals.
- the elevating guide hardware 23 and the gap Cg are moved up and down.
- the lift guide hardware 23 and the gap Ca are raised and lowered. In this way, by reducing the gap Ca between the lower lifting guide 46 at the position of the lower lifting guide 46, while guiding the storage seat 20 lowered to the thruster placement unit 10 integrally with the thruster 3 to a more accurate position. It can be hung.
- a temporary upper lifting guide hardware mounting base 50 is provided at the upper portion of the storage seat 20, and the upper lifting guide hardware mounting 50 is provided on the upper lifting guide hardware mounting base 50. 51 may be provided.
- the upper lifting guide hardware mounting base 50 is provided at a portion of the storage seat 20 where the driving device 4 was mounted.
- the upper lifting guide hardware 51 provided on the upper lifting guide hardware mounting base 50 is provided on the vertical line of the lifting guide hardware 23 provided on the flange portion 21 of the storage seat 20.
- the lifting guide 40 is guided by the lifting guide 40 at a position separated in the vertical direction by the lifting guide hardware 23 of the flange portion 21, so that the storage seat 20 and the thruster 3 are lifted and lowered integrally. A more stable guide can be achieved.
- the flange portion 21 of the storage seat 20 is fixed to the hull 2 by a fixing bolt 60 provided on the mounting seat 15 of the hull structure 2.
- the fixing bolt 60 of this embodiment is an implanted bolt implanted in the mounting seat 15, and a bolt hole 61 provided in the flange portion 21 is inserted and a nut 62 is tightened from above to be fixed. ing.
- a sealing material 29 is provided on the lower surface inside the fixing bolt 60 of the flange portion 21.
- the insertion guide 70 includes an insertion guide pin 71 provided between the fixing bolts 60, and a pin hole 72 provided in the flange portion 21 so as to be inserted into the insertion guide pin 71.
- the insertion guide pin 71 is formed with a tapered portion 73 having a reduced diameter on the upper portion, so that the pin hole 72 of the flange portion 21 inserted from above is easily inserted.
- the insertion guide 70 guides the pin hole 72 of the suspended storage seat 20 to the insertion guide pin 71, and the bolt hole 61 of the flange portion 21 is inserted into the fixing bolt 60.
- the height h of the insertion guide pin 71 is slightly higher than the upper end position of the fixing bolt 60.
- the height h is set to a height at which the flange portion 21 does not contact the fixing bolt 60 when the flange portion 21 is positioned at the lower end of the tapered portion 73.
- the fixing bolt 60 is a stud bolt
- the flange portion 21 of the suspended storage seat 20 is first positioned with the pin hole 72 by the insertion guide pin 71.
- the position of the bolt hole 61 is determined. Therefore, the storage seat 20 can be positioned on the mounting seat 15 without the fixing bolt 60 and the bolt hole 61 of the flange portion 21 contacting each other.
- the storage seat 20 that is lowered from the upper side of the thruster arrangement portion 10 can be lowered to the correct position of the mounting seat 15.
- FIG. 12 is a view taken along arrow XII-XII shown in FIG. 13, and FIG. 13 is a view taken along arrow XIII-XIII shown in FIG.
- the locking device 30 is provided at a corner portion between the hull structure 2 and the mounting seat 15 which are the wall surfaces 13 of the thruster arrangement portion 10.
- the lock device 30 includes a lock hardware 34 that protrudes toward the flange portion 21 of the storage seat 20 or is stored toward the wall surface 13.
- the rotary shaft portion 35 is supported by a mounting base 80 projecting inward from the hull structure 2.
- the mounting base 80 includes a plate-like member 81 having a predetermined thickness provided at a predetermined distance in the vertical direction.
- Both plate-like members 81 are provided with mounting holes 82 penetrating in the vertical direction, and support shafts 36 provided above and below the rotating shaft portion 35 are inserted into the mounting holes 82. Thereby, the rotating shaft part 35 is supported so that rotation is possible, and the lock metal object 34 can be rotated in a horizontal direction. Further, since the lock hardware 34 is supported by the hull structure 2 by the mounting base 80, the load supported by the lock hardware 34 is supported by the hull structure 2.
- the lock hardware 34 is provided with a rotation drive shaft 37 protruding upward on an upper portion of a support shaft 36 provided on an upper portion of the rotation shaft portion 35.
- the rotary drive shaft 37 of this embodiment has a rectangular cross section.
- the rotary drive shaft 37 is connected to an expansion joint 38 provided at the lower end of the upper transmission shaft 31.
- the expansion joint 38 allows the rotary drive shaft 37 to move in the vertical direction.
- the rotation shaft portion 35 of the lock hardware 34 can be rotated via the expansion joint 38 if the transmission shaft 31 is rotated. Even if the rotary shaft portion 35 is displaced upward, the expansion joint 38 does not absorb the upward displacement of the rotary drive shaft 37 and transmit it to the transmission shaft 31.
- the upward load acting on the lock hardware 34 is supported by the hull structure 2 via the mounting base 80, and is connected by the rotation drive shaft 37 of the rotation shaft portion 35 and the expansion joint 38.
- An upward load does not act on the transmission shaft 31.
- the transmission shaft 31 is rotated by the rotation driving means provided at the upper portion of the thruster arrangement portion 10, and the locking device 30 provided at the lower portion of the thruster arrangement portion 10 can be operated.
- the lock hardware 34 can be rotated in the horizontal direction within a range of about 90 ° in a plan view.
- the flange portion 21 of the storage seat 20 is provided with a wedge seat 90 with which the lock hardware 34 is engaged.
- the lock hardware 34 is rotated about 90 ° from the position indicated by the two-dot chain line toward the wedge seat 90 and is engaged with the upper surface of the wedge seat 90 to be in a lock operation state.
- the mounting base 80 is provided with a stopper 83 that abuts when the lock hardware 34 is rotated toward the wall surface 13.
- the position of the lock hardware 34 indicated by the two-dot chain line in contact with the stopper 83 is the storage position, and is in the unlocked state.
- the wedge seat 90 has an upper surface formed on a tapered surface 91 having an angle ⁇ that provides a wedge effect.
- the lock hardware 34 that engages with the wedge seat 90 also has an engagement surface 39 formed at the same angle ⁇ as the upper surface of the wedge seat 90. This angle ⁇ is set according to the force required for the rotation of the lock hardware 34, the contact area, and the like.
- the locking device 30 in the operating state, the locking device 30 is in a locked state, and the flange portion 21 of the storage seat 20 is fixed to the mounting seat 15 with fixing bolts 60 (FIG. 3). Further, components such as a driving device 4 for driving the thruster 3 are also attached.
- the lock device 30 In the operating state, the lock device 30 may be in the locked state or in the unlocked state, but in this embodiment, a case where the lock device 30 is in the locked state in the operating state will be described.
- the drive device 4 and other components are removed, and a waterproof cover or the like is attached to each part.
- specific preparations for removal include pipe and wire removal, drive device 4 and drive shaft 5 removal, lubricant pump unit removal, swivel pump unit removal, swivel The valve unit is removed, and a waterproof cover or the like is attached to them.
- the wire 7 of the lifting device is attached to a predetermined position of the storage seat 20.
- the locked state of the locking device 30 is reconfirmed, and the fixing of the flange portion 21 by the fixing bolt 60 is released.
- the fixing release of the flange portion 21 is performed by an operator entering the internal space 17 of the thruster arrangement portion 10, but the operation can be performed in a dry environment.
- the storage seat 20 is held by the mounting seat 15 only by the locking device 30. That is, when the fixing bolt 60 is removed, upward loads acting on the thruster 3 and the storage seat 20 due to a difference in water level between the inside of the thruster placement portion 10 and the outside of the hull are provided at a plurality of locations around the storage seat 20.
- the locking device 30 holds the hull structure.
- water is injected into the thruster arrangement unit 10. This water injection is performed until water of the same level as that of the external draft 8 is accumulated in the internal space 17 of the thruster arrangement unit 10. Thereby, the water pressure from the outside which acts on the thruster 3 and the storage seat 20 is balanced with the water pressure from the inside.
- the work by the diver is simply a confirmation of the unlocked state, and thus can be performed as a simple work. Moreover, since the work is performed inside the thruster placement unit 10, it can be easily performed regardless of the sea weather outside the ship. .
- This operation completes the release operation of the configuration in which the thruster 3 and the storage seat 20 are fixed to the hull structure 2.
- the storage seat 20 is lifted by the wire 7 of a lifting device such as a winch or a crane.
- a lifting device such as a winch or a crane.
- the lifting guide metal 23 of the flange portion 21 is guided by the lifting guide 40 (FIGS. 2 and 3), so that the storage seat 20 and the thruster 3 are integrally and stably suspended. Can be raised.
- the weight lifted by the wire 7 is a weight obtained by subtracting the buoyancy acting on the storage seat 20 and the thruster 3 underwater, and a weight due to only the weight of the thruster 3 and the storage seat 20 even in the air lifted from the water. Therefore, the thruster 3 can be removed from the ship if there is a winch, a crane or the like that can lift the weight. Therefore, a special lifting device for heavy weight is not required, and it can be lifted and hung by a normal simple winch or the like.
- the thruster 3 suspended in the ship from the thruster placement unit 10 is inspected and repaired at a predetermined place.
- the thruster 3 that protrudes downward from the hull structure 2 with the excavated ship etc. held at a fixed point at the offshore operating point by a simple handling device using a winch, a crane or the like is drawn on the draft surface. It can be removed from the ship above and inspected and repaired.
- the thruster 3 fixed integrally with the storage seat 20 is suspended by a winch, a crane or the like while the water level in the thruster disposition unit 10 is at the same level as the external draft 8.
- the flange portion 21 of the storage seat 20 is guided by the suspension guide 41 (FIG. 2) provided on the upper portion of the above-described thruster placement portion 10, and the flange portion 21 is supported by the lifting guide 40 provided on the thruster placement portion 10. Can be lowered so as to be engaged (FIGS. 2 and 3).
- the pin hole 72 provided in the flange portion 21 of the storage seat 20 is inserted into the insertion guide pin 71 provided in the mounting seat 15 (two-dot chain line in FIG. 11). ).
- the flange portion 21 is accurately positioned, and the bolt hole 61 of the flange portion 21 is inserted into the fixing bolt 60 by further lowering the storage seat 20.
- the flange portion 21 of the storage seat 20 is placed on the mounting seat 15 (solid line in FIG. 11).
- the sealing material 29 (FIG. 10) provided on the lower surface of the flange portion 21 comes into close contact with the mounting seat 15 due to the weight of the storage seat 20 and the thruster 3, and the inside of the thruster placement portion 10 is sealed watertight to the outside.
- the transmission shaft 31 is rotated by the operation lever 55 attached to the upper part of the transmission shaft 31.
- the lock hardware 34 of the locking device 30 is rotated and engaged with the wedge seat 90 provided on the flange portion 21 of the storage seat 20, and the flange portion 21 is locked to the mounting seat 15 (see FIG. 14). solid line).
- the rotation of the lock metal 34 is also an operation of rotating the lock metal 34 toward the tapered surface 91 of the wedge seat 90 in a state where the storage seat 20 and the thruster 3 are placed on the mounting seat 15 by their own weight. In particular, it can be reliably engaged.
- the locked state by the locking device 30 is confirmed by a diver entering the water in the thruster placement unit 10. Since the confirmation work by the diver is only confirmation of the locked state, it can be carried out as a simple work. Moreover, since the work is performed inside the thruster arrangement unit 10, it can be easily carried out regardless of the sea weather outside the ship. .
- This operation completes the operation of fixing the thruster 3 and the storage seat 20 to the mounting seat 15 of the hull structure 2 with the lock device 30.
- the wire 7 of the suspension device is removed. Further, the flange portion 21 around the storage seat 20 is fixed to the fixing bolt 60 provided on the mounting seat 15 (the state of the solid line shown in FIG. 11). Since these operations are performed after draining from the thruster placement unit 10, the operations are performed in a dry environment and can be easily performed. Thereby, the storage seat 20 and the thruster 3 are fixed to the hull structure 2.
- the waterproof cover and the like attached when removing the thruster 3 are removed.
- Various components are then attached. Although many of the components are not shown in the drawing, the specific configuration includes piping, electric wire installation, drive device 4, drive shaft 5, lubricant pump unit installation, swivel pump unit installation, swivel valve Unit mounting, etc.
- the device is adjusted and checked for operation.
- the thruster 3 can be attached from the inside of the ship to the lower portion of the thruster placement part 10 while holding the excavated ship at a fixed point at the offshore operating point by a simple handling device using a winch, a crane or the like.
- the thruster 3 protruding from the bottom of the vessel can be removed while maintaining the fixed point at the offshore operation point, etc., so that it was removed from the vessel.
- the thruster 3 can be inspected and repaired on board.
- the removed thruster 3 can be attached to the thruster placement section 10 after inspection and repair, or another thruster 3 can be placed in the thruster placement section 10 at the time of inspection and repair, while maintaining the fixed point of the hull, etc. Some thrusters 3 can be easily inspected, repaired, or replaced.
- the ship-removable thruster device 1 can be constructed at a low cost.
- the work can be quickly removed when the thruster 3 fails without being affected by the weather.
- the implantable fixing bolt (fixing means) 60 has been described as an example of the fixing means for fixing the flange portion 21 of the storage seat 20 to the mounting seat 15, but the fixing means is from above the flange portion 21.
- a holding bolt for inserting the bolt or other means may be used, and the fixing means is not limited to the above embodiment.
- the locking device 30 of the above embodiment is configured to lock the lock hardware 34 by engaging with the wedge seat 90, but may be configured to lock with a configuration other than the wedge seat 90. Is not limited to the above embodiment.
- the lock hardware 34 is rotated to perform the lock operation / release, but the lock device 30 may be operated / released in addition to the rotary type, and is not limited to the above embodiment. .
- positioning part 10 opposes was demonstrated, if it is the raising / lowering guide which can raise / lower the storage seat 20 stably, for example, one piece
- the number may be three, and the configuration of the lifting guide 40 is not limited to the above embodiment.
- the onboard detachable thruster apparatus according to the present invention can be used for an excavation ship or the like that wants to perform inspection, repair, etc. by removing the thruster from the ship while holding a fixed point on the ocean.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Earth Drilling (AREA)
- Load-Engaging Elements For Cranes (AREA)
- Barrages (AREA)
Abstract
Description
2 船体(船体構造)
3 スラスタ
7 ワイヤー
8 外部喫水
10 スラスタ配置部
11 下開口部
12 上開口部
13 壁面(船体構造)
15 取付座
17 内部空間
20 格納座
21 フランジ部
22 格納部
23 昇降ガイド金物
28 桁材(強度部材)
29 シール材
30 ロック装置
31 伝動軸(回転駆動手段)
34 ロック金物
38 伸縮継手
39 係合面
40 昇降ガイド
41 吊降ろしガイド
42 昇降ガイド支持材
43 案内部
45 昇降ガイド
46 下部昇降ガイド
47 上部昇降ガイド
50 上部昇降ガイド金物取付台
51 上部昇降ガイド金物
55 操作レバー(回転駆動手段)
60 固定ボルト(固定手段)
61 ボルト穴
70 挿入ガイド
71 挿入ガイドピン
72 ピン穴
80 取付台
90 くさび座
91 テーパ面
Claims (11)
- 船体の所定位置に設けられた上下方向が開口するスラスタ配置部と、前記スラスタ配置部の下開口部から下方に突出するスラスタと、前記スラスタ及びスラスタの駆動装置を前記スラスタ配置部内に格納する格納座と、前記格納座の船体側固定位置に設けられた取付座と、前記格納座を前記取付座に固定する固定手段と、を備えたスラスタ装置であって、
前記スラスタ配置部は周囲を船体構造の一部をなす壁面に覆われており、
前記壁面には、前記固定手段による連結を解除した場合に前記格納座を取付座に保持するためのロック装置が備えられており、
前記ロック装置は、前記スラスタ配置部の上部からロック状態の作動・解除ができるよう構成されていることを特徴とする船内取外し式スラスタ装置。 - 前記固定手段は、前記スラスタ配置部内から前記格納座の周辺の複数個所で船体構造に取付け・取外し可能に構成されている請求項1に記載の船内取外し式スラスタ装置。
- 前記ロック装置は、前記格納座の周囲に設けたフランジ部において格納座と係合するロック金物を有し、該ロック金物に連結され前記壁面に上下に延設された伝道軸を軸周りに回転させることで前記ロック金物を前記伝道軸まわりに回転させてロック状態の作動・解除を行うように構成されている請求項1に記載の船内取外し式スラスタ装置。
- 前記ロック装置は、前記格納座の周囲に設けたフランジ部の上面に配置したくさび座と、前記船体構造に設けて前記くさび座と係合する係合面を有するロック金物とを有し、
前記くさび座とロック金物の係合面は、くさび効果が得られる摩擦角以下の傾斜角度で形成されている請求項1に記載の船内取外し式スラスタ装置。 - 前記ロック装置は、前記ロック金物が水平方向に回転して前記くさび座と係合するように構成され、
前記スラスタ配置部は、前記ロック装置のロック金物を回転させて作動・解除する回転駆動手段を上部に備え、
前記ロック装置とロック装置の回転駆動手段の間に伸縮継手を設けている請求項4に記載の船内取外し式スラスタ装置。 - 前記ロック装置は、前記ロック金物をくさび座と係合させる駆動手段を有し、
前記駆動手段は、流体圧で前記ロック金物を駆動する駆動機で構成されている請求項4に記載の船内取外し式スラスタ装置。 - 前記格納座のフランジ部は、前記固定手段の周囲で取付座に接するシール材を有し、
前記ロック装置は、前記格納座の強度部材と対向するように配置されている請求項1~6のいずれか1項に記載の船内取外し式スラスタ装置。 - 前記スラスタ配置部は、前記スラスタを取付けた状態の前記格納座を、前記スラスタ配置部内で吊上げ又は吊降ろし可能にガイドする上下方向に延設された昇降ガイドと、前記ロック装置を作動・解除する駆動手段と、を有している請求項1に記載の船内取外し式スラスタ装置。
- 前記スラスタ配置部は、前記格納座の中心に対して対向する位置に少なくとも2条の前記昇降ガイドを有している請求項8に記載の船内取外し式スラスタ装置。
- 前記取付座は、前記格納座の吊降ろし時に前記取付座の所定位置にガイドする少なくとも2箇所に設けた挿入ガイドを有し、
前記スラスタ配置部は、水平方向断面が矩形状の開口部を有し、
前記少なくとも2条の昇降ガイドは、前記開口部の短辺側における対向するスラスタ配置部壁面に配設され、
前記少なくとも2箇所に設けた挿入ガイドは、前記開口部の短辺側における対向する取付座面上に配設されている請求項9に記載の船内取外し式スラスタ装置。 - 前記固定手段は、前記取付座に固定された固定ボルトと、前記格納座に設けたボルト穴とを有し、
前記挿入ガイドは、前記取付座に固定された挿入ガイドピンと、前記格納座に設けたピン穴とを有し、
前記格納座の吊降ろし時に、前記挿入ガイドピンで前記ピン穴をガイドすることで前記格納座のボルト穴位置を前記固定ボルト位置に位置決めするように構成されている請求項10に記載の船内取外し式スラスタ装置。
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KR20157001948A KR20150027247A (ko) | 2012-07-17 | 2013-07-16 | 선내 분리식 스러스터 장치 |
JP2014525719A JP5802335B2 (ja) | 2012-07-17 | 2013-07-16 | 船内取外し式スラスタ装置 |
EP13820414.4A EP2876040B1 (en) | 2012-07-17 | 2013-07-16 | In-ship removal-type thruster device |
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JP2012-158929 | 2012-07-17 | ||
JP2012158929 | 2012-07-17 |
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EP (1) | EP2876040B1 (ja) |
JP (1) | JP5802335B2 (ja) |
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CN109080806A (zh) * | 2018-09-21 | 2018-12-25 | 昆山耀和体育用品有限公司 | 一种可快速安拆推进器的皮划艇 |
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KR102211880B1 (ko) * | 2020-01-09 | 2021-02-03 | 케이오티 (주) | 트러스터 수중 설치장치 |
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- 2013-07-16 EP EP13820414.4A patent/EP2876040B1/en active Active
- 2013-07-16 WO PCT/JP2013/004346 patent/WO2014013724A1/ja active Application Filing
- 2013-07-16 KR KR20157001948A patent/KR20150027247A/ko not_active Application Discontinuation
- 2013-07-16 JP JP2014525719A patent/JP5802335B2/ja active Active
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JP4526184B2 (ja) | 1997-10-23 | 2010-08-18 | アイエイチシー・ガスト・エンジニアリング・ベー・ブイ | 引き込み得る推進装置を具備した船舶 |
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EP2876040A4 (en) | 2016-03-30 |
EP2876040B1 (en) | 2019-01-16 |
JP5802335B2 (ja) | 2015-10-28 |
JPWO2014013724A1 (ja) | 2016-06-30 |
EP2876040A1 (en) | 2015-05-27 |
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