WO2013168986A1 - 선박용 추진장치 및 이를 포함하는 선박 - Google Patents
선박용 추진장치 및 이를 포함하는 선박 Download PDFInfo
- Publication number
- WO2013168986A1 WO2013168986A1 PCT/KR2013/003990 KR2013003990W WO2013168986A1 WO 2013168986 A1 WO2013168986 A1 WO 2013168986A1 KR 2013003990 W KR2013003990 W KR 2013003990W WO 2013168986 A1 WO2013168986 A1 WO 2013168986A1
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- WIPO (PCT)
- Prior art keywords
- rotation
- gear
- shaft
- reverse rotation
- propeller
- Prior art date
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Classifications
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- 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
- B63H5/08—Arrangements on vessels of propulsion elements directly acting on water of propellers of more than one propeller
- B63H5/10—Arrangements on vessels of propulsion elements directly acting on water of propellers of more than one propeller of coaxial type, e.g. of counter-rotative type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H23/00—Transmitting power from propulsion power plant to propulsive elements
- B63H23/30—Transmitting power from propulsion power plant to propulsive elements characterised by use of clutches
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H23/00—Transmitting power from propulsion power plant to propulsive elements
- B63H23/32—Other parts
- B63H23/321—Bearings or seals specially adapted for propeller shafts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H23/00—Transmitting power from propulsion power plant to propulsive elements
- B63H23/32—Other parts
- B63H23/34—Propeller shafts; Paddle-wheel shafts; Attachment of propellers on shafts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H23/00—Transmitting power from propulsion power plant to propulsive elements
- B63H23/32—Other parts
- B63H23/36—Shaft tubes
-
- 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
- B63H5/08—Arrangements on vessels of propulsion elements directly acting on water of propellers of more than one propeller
- B63H5/10—Arrangements on vessels of propulsion elements directly acting on water of propellers of more than one propeller of coaxial type, e.g. of counter-rotative type
- B63H2005/106—Arrangements on vessels of propulsion elements directly acting on water of propellers of more than one propeller of coaxial type, e.g. of counter-rotative type with drive shafts of second or further propellers co-axially passing through hub of first propeller, e.g. counter-rotating tandem propellers with co-axial drive shafts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H23/00—Transmitting power from propulsion power plant to propulsive elements
- B63H23/32—Other parts
- B63H23/321—Bearings or seals specially adapted for propeller shafts
- B63H2023/323—Bearings for coaxial propeller shafts, e.g. for driving propellers of the counter-rotative type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H23/00—Transmitting power from propulsion power plant to propulsive elements
- B63H23/32—Other parts
- B63H23/34—Propeller shafts; Paddle-wheel shafts; Attachment of propellers on shafts
- B63H2023/342—Propeller shafts; Paddle-wheel shafts; Attachment of propellers on shafts comprising couplings, e.g. resilient couplings; Couplings therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H23/00—Transmitting power from propulsion power plant to propulsive elements
- B63H23/32—Other parts
- B63H23/34—Propeller shafts; Paddle-wheel shafts; Attachment of propellers on shafts
- B63H2023/346—Propeller shafts; Paddle-wheel shafts; Attachment of propellers on shafts comprising hollow shaft members
Definitions
- the present invention relates to a ship, and more particularly to a ship propulsion device and a ship comprising the two propellers rotate oppositely to generate a propulsion force.
- a typical marine propulsion device has one spiral propeller.
- a propeller with a single propeller has a high energy loss since the rotational energy of the water flow due to the propeller's rotation cannot be used as a driving force.
- the counter rotating propeller can recover this lost rotational energy as the driving force.
- CRP counter rotating propeller
- two propellers installed on the same axis rotate in opposite directions to generate propulsion force.
- the rotational energy of the fluid passing through the front propeller is recovered by propulsion while the rear propeller rotates backward. Therefore, it is possible to exhibit a high propulsion performance compared to the propulsion device having a single propeller.
- the double reversal propulsion device includes a reverse rotation device and a hollow shaft that implement opposite rotations of two propellers, it is relatively difficult to manufacture and install, and requires high technical level to operate stably while maintaining reliability. do.
- the double reversal propulsion device is required for an emergency operation that can drive the other propellers to operate the ship when one of the propellers can not be driven due to the failure of the reverse rotation device.
- An embodiment of the present invention is to provide a ship propulsion device and a ship including the same, which can simplify the power transmission system and realize a stable mutual reversal of the two propellers as well as easy to manufacture, install and maintain.
- an embodiment of the present invention is to provide a ship propulsion device and a ship comprising the same that can block the transmission of power to the reverse rotation device if necessary.
- an embodiment of the present invention is to provide a ship propulsion device and a ship having the same that can protect the reverse rotation device when the propulsion only by the rear propeller.
- an embodiment of the present invention is to provide a ship propulsion apparatus and a ship including the same that can automatically implement the power transmission to the reverse rotation device.
- a reverse rotation device including a gear box, a coupling device that detachably connects the rotation shaft and the reverse rotation device, and disconnects power transmission from the rotation shaft to the inversion rotation device, and upon separation of the coupling device.
- a propulsion device for a ship may be provided that includes a rotation preventing device for preventing rotation of the front propeller.
- the coupling device includes a friction member interposed between the rotating shaft and the reverse rotation device to prevent slip.
- the coupling device includes a drive flange formed in the radial direction of the rotary shaft, and a plurality of connecting bolts for coupling the rotary shaft with the reverse rotation device through the drive flange.
- the friction member may be formed of a plurality of pieces to be separated between the rotating shaft and the reverse rotation device when the bolt is separated.
- the plurality of gears may include a driving bevel gear, a driven bevel gear for transmitting power to the front propeller, at least one inverted bevel gear for inverting and transmitting rotation of the driving bevel gear, and the driving bevel. And a first connection member connected to the gear and extending toward the driving flange.
- the coupling device further includes a driven flange extending from the reverse rotation device to receive the driving force of the rotating shaft, and the anti-rotation device includes a shaft for fixing the driven flange to the hull.
- the driven flange includes a fastening hole to which one end of the shaft is fixed
- the hull includes a shaft frame to which the other end of the shaft is fixed.
- the anti-rotation device may restrain the rotation of the first connection member when the first connection member and the drive flange is disconnected.
- the coupling device further includes a driven flange extending from the reverse rotation device to receive the driving force of the rotating shaft, and the anti-rotation device includes a pair of friction pads disposed opposite to edges of the driven flange. Disc brakes.
- the coupling device includes a first gear unit fixed to the rotating shaft, a second gear unit fixed to the reverse rotation device, and a connection unit for selectively connecting the first gear unit and the second gear unit. It may be configured as a clutch device.
- the second gear unit further includes a cylindrical portion coupled to the reverse rotation device, and a second gear portion disposed at an end of the cylindrical portion adjacent to the first gear portion of the first gear unit.
- connection unit includes a retraction unit provided in the outer diameter of the cylindrical portion sliding in the axial direction along the cylindrical portion, and extending from the retraction unit corresponding to the first gear portion and the second gear portion.
- the clutch device includes a hydraulic chamber which is partitioned between the advance unit and the second gear unit, the fluid is accommodated to allow the advance unit sliding.
- the clutch device includes a flow path for supplying a fluid to the hydraulic chamber.
- the plurality of gears may include a driving bevel gear, a driven bevel gear for transmitting power to the front propeller, and one or more inverted bevel gears for inverting and transmitting rotation of the driving bevel gear.
- the second gear unit may be connected to the driving bevel gear and extend toward the first gear unit.
- the propulsion device according to the embodiment of the present invention can be detachably coupled to the front connection member and the rotating shaft, it is possible to block the power transmission to the reverse rotation device in an emergency situation, such as failure of the reverse rotation device.
- the propulsion device by providing a rotation preventing device for preventing the rotation of the front propeller when the power to the reverse rotation device, the reverse rotation device that may occur due to the rotation of the front propeller, etc. Breakage of components can be prevented.
- the propulsion device can be mounted in such a way that the gearbox of the reverse rotation apparatus enters the installation space formed at the rear of the hull in the state in which the reverse rotation apparatus is manufactured and assembled outside the hull. Installation can be performed easily.
- the propulsion device can easily remove the front and rear propellers from the rotating shaft when the failure occurs, and the gearbox of the reverse rotation device can be separated from the hull to easily perform maintenance work, such as troubleshooting can do.
- the propulsion device by providing a clutch device for automatically implementing the coupling, the separation of the reverse rotation device and the rotating shaft, it is possible to automate the power transmission and blocking to the reverse rotation device.
- the propulsion device by providing a rotation preventing device for preventing the rotation of the front propeller when the power to the reverse rotation device, the reverse rotation device that may occur due to the rotation of the front propeller, etc. Breakage of components can be prevented.
- the propulsion device is to implement the reversal of the front propeller by using a plurality of bevel gears can reduce the volume and simplify the configuration of the power transmission system compared to the conventional planetary gear type reverse rotation device. can do.
- the volume of the reverse rotation apparatus can be reduced, it is possible to install the reverse rotation apparatus at the rear of the hull.
- the propulsion device according to the embodiment of the present invention can remove the hollow shaft as in the prior art by installing a reverse rotation device on the rear side of the hull can not only simplify the power transmission system but also reduce the area requiring lubrication. Therefore, the problems caused by lubrication can be minimized.
- FIG. 1 is a cross-sectional view showing a state in which a propulsion apparatus according to an embodiment of the present invention is applied to a vessel.
- FIG. 2 is a cross-sectional view of the propulsion device according to an embodiment of the present invention.
- FIG 3 is an exploded perspective view of the propulsion apparatus according to the embodiment of the present invention.
- FIG. 4 is an exploded perspective view of the reverse rotation apparatus of the propulsion apparatus according to the embodiment of the present invention.
- Figure 5 is a detailed cross-sectional view showing the mounting structure of the bearings for supporting the front propeller of the propulsion apparatus according to the embodiment of the present invention.
- FIG. 6 is a detailed cross-sectional view illustrating a mounting structure of bearings for supporting the front propeller of the propulsion apparatus according to the exemplary embodiment of the present invention, in which the first radial bearing is separated.
- FIG. 7 is a cross-sectional view showing an example of mounting the reverse rotation device of the propulsion apparatus according to an embodiment of the present invention, showing a state in which the reverse rotation device is separated.
- FIG 8 illustrates a state in which a rotating shaft and a reverse rotation device are coupled to the propulsion device according to an embodiment of the present invention.
- FIG. 9 is a cross-sectional view showing a state in which the rotation preventing device is installed after the coupling device is separated from the propulsion device according to an embodiment of the present invention.
- FIG. 10 is a cross-sectional view of a first sealing device of the propulsion device according to the embodiment of the present invention.
- FIG. 11 is a cross-sectional view of a second sealing device of the propulsion apparatus according to the embodiment of the present invention.
- FIG. 12 is a perspective view showing a state in which the anti-rotation device is installed on the rear of the hull according to an embodiment of the present invention.
- FIG. 13 is a cross-sectional view showing a state in which a rotation preventing device according to another embodiment of the present invention is installed.
- FIG. 14 is an exploded perspective view of the first sealing device of the propulsion device according to the embodiment of the present invention.
- FIG. 15 is a partial cutaway perspective view showing a coupling device of the propulsion device according to another embodiment of the present invention.
- 16 is a cross-sectional view of a main portion showing a state in which the coupling device is operated in the propulsion device according to another embodiment of the present invention.
- 17 is a main cross-sectional view showing a state in which the clutch device is released from the propulsion device according to an embodiment of the present invention, and a rotation preventing device is installed.
- FIG. 18 is an exploded perspective view of the reverse rotation device of the propulsion apparatus according to another embodiment of the present invention.
- 19 is a cross-sectional view illustrating a mounting example of the reverse rotation apparatus of the propulsion apparatus according to another embodiment of the present invention, showing a state in which the reverse rotation apparatus is separated.
- FIG. 1 is a cross-sectional view showing a state in which a propulsion apparatus according to an embodiment of the present invention is applied to a vessel.
- the front propeller 10 and the rear propeller 10 is arranged so that the axis line coincides with the rotating shaft 5, the rotating shaft 5 behind the hull 1, Inverted rotation device 30 installed on the rear end 3 of the hull 1 to realize the opposite rotation of the propeller 20, the front propeller 10 and the rear propeller 20, the rotary shaft 5 and the reverse rotation And a coupling device 60 for detachably connecting the device 30.
- This embodiment is a double reversal propulsion device for generating propulsion while the two propellers (10,20) are rotated opposite to each other.
- the tail 3 of the hull 1 is a stern boss as a part that protrudes in a streamlined direction from the hull 1 to the rear for installation of the front and rear propellers 10 and 20 and the reverse rotation device 30. ).
- the hull aft 3 may be made of casting and then fixed to the hull 1 by welding.
- it is provided with an installation space (4) penetrated back and forth to accommodate the reverse rotation device (30).
- the inner surface of the installation space 4 can be processed into a cylindrical by boring (boring) to correspond to the outer shape of the reverse rotation device (30).
- the rotary shaft 5 may be connected to the front end of the reverse rotation device 30 to be detachably coupled to the main drive shaft 6 in the hull (1).
- the main drive shaft 6 is connected to the drive source (8, engine, motor, turbine, etc.) installed in the hull 1, the rotary shaft 5 can rotate with the main drive shaft (6).
- the main drive shaft 6 and the rotation shaft 5 can be connected to the separation and coupling by the cylindrical coupling (Coupling) device (7).
- the coupling (Coupling) shaft joint As an example, the coupling (Coupling) shaft joint, but the connection method of the main drive shaft 6 and the rotary shaft 5 is not limited thereto. Flange coupling method, friction clutch method, magnetic clutch method and the like can be selectively employed.
- FIG. 2 is a cross-sectional view of the propulsion device according to an embodiment of the present invention
- Figure 3 is an exploded perspective view of the propulsion device according to an embodiment of the present invention
- Figure 4 is a reverse rotation device of the propulsion device according to an embodiment of the present invention Perspective view.
- the front propeller 10 is rotatably installed on the outer surface of the rotary shaft 5 between the rear propeller 20 and the reverse rotation device (30).
- the front propeller 10 includes a hub 11 rotatably supported on the outer surface of the rotating shaft 5 and a plurality of wings 12 provided on the outer surface of the hub 11.
- the front propeller 10 may be installed on the outer surface of the rotary shaft 5 before installing the rear propeller 20.
- the wing angle is opposite to the wing angle of the rear propeller 20 because it is rotated opposite to the rear propeller 20.
- the rear propeller 20 is fixed to the rear end of the rotary shaft 5 to rotate together with the rotary shaft 5.
- the rear propeller 20 includes a hub 21 fixed to the rotation shaft 5 and a plurality of wings 22 provided on an outer surface of the hub 21.
- the hub 21 of the rear propeller 20 may be fixed in such a way that the shaft coupling hole 23 in the center portion is pressed into the outer surface of the rotation shaft 5.
- the rear propeller 20 may be more firmly fixed to the rotary shaft 5 by fastening the fixed cap 24 to the rear end of the rotary shaft 5.
- the rear end portion 5a of the rotating shaft 5 may be provided with a tapered outer surface whose outer diameter decreases toward the rear, and the shaft coupling hole 23 of the hub 21 is provided on the outer surface of the rotating shaft 5. It may consist of a corresponding tapered inner surface.
- reference numeral 25 denotes a propeller cap mounted to the hub 21 to cover the rear propeller 20 and the rear surface of the hub 21 and the fixing cap 24.
- the reverse rotation device 30, the gear box 40 and the rotating shaft 5 is formed in the installation space 4 of the rear end 3 of the hull 1 to form an appearance
- Driven bevel gear 31 installed in the gearbox 40 so as to rotate together with the driven bevel gear 31 rotatably supported by the rotating shaft 5 inside the gearbox 40 in a form opposite to the driving bevel gear 31.
- (32) at least one inverted bevel gear (33) for inverting and transmitting the rotation of the driving bevel gear (31) to the driven bevel gear (32).
- second connecting member 36 connecting the driven bevel gear 32 and the hub 11 of the front propeller 10 It may include, the rotating shaft 5 and the driving bevel gear 31, the driven bevel gear 32 and the hub 11 of the front propeller 10 is directly connected without the first and second connecting members (35, 36) The configuration is also possible.
- the gearbox 40 may accommodate the driving bevel gear 31, the driven bevel gear 32, and the inversion bevel gear 33 to form the reverse rotation device 30 as one unit.
- the rear propeller 20 is fixed to the rotation shaft 5 extending rearward of the gearbox 40, and the front propeller 10 is rotatably supported on the outer surface between the rear propeller 20 and the gearbox 40. .
- the front propeller 10 may be connected to the reverse rotation device 30 to rotate opposite to the rear propeller 20 when the rotating shaft 5 rotates.
- the front propeller 10 will be described in detail.
- Figure 5 is a detailed cross-sectional view showing the mounting structure of the bearings for supporting the front propeller of the propulsion apparatus according to the embodiment of the present invention.
- the hub 11 of the front propeller 10 includes a rotating shaft (1) by a first thrust bearing 13, a second thrust bearing 14, and a first radial bearing 15. 5) It can be rotatably supported on the outer surface.
- the first thrust bearing 13 and the second thrust bearing 14 are installed between the front inner surface of the hub 11 and the outer surface of the rotary shaft 5, and the first radial bearing 15 is rearward of the hub 11. It can be installed between the inner surface and the outer surface of the rotary shaft (5).
- the first radial bearing 15 bears the radial load of the front propeller 10 acting in the radial direction of the rotary shaft 5, and the first and second thrust bearings 13, 14 are connected to the rotary shaft 5.
- the thrust load acting in the front and rear axial direction can be taken.
- the second thrust bearing 14 bears a thrust load acting toward the bow from the front propeller 10 when the ship moves forward, and the first thrust bearing 13 moves from the front propeller 10 to the stern when the ship moves backward. It can bear the thrust load acting.
- the inner ring of the first thrust bearing 13 and the inner ring of the second thrust bearing 14 are disposed to be in contact with each other in a state of being press-fitted to the outer surface of the rotary shaft 5 so as not to be pushed in the axial direction.
- the outer ring of the first thrust bearing 13 may be supported by the fixing ring 39 mounted on the second connection member 36 coupled to the hub 11 so as not to be pushed in the axial direction.
- a cylindrical first support ring 17a and a second support ring 17b are respectively provided between the hub 11 and the rotation shaft 5 of the front propeller 10 so that the second thrust bearing 14 is pushed in the axial direction. You can do that.
- the first support ring 17a may be interposed between the outer ring of the second thrust bearing 14 and the outer ring of the first radial bearing 15 to allow them to be mutually supported, and the second support ring 17b may include a second ring. It may be interposed between the inner ring of the thrust bearing 14 and the inner ring of the first radial bearing 15 so that they are mutually supported.
- the inner ring of the hub 11 between the outer ring of the first radial bearing 15 and the first sealing cover 71 to be described later is provided with a gap adjusting ring 18 so that the outer ring of the first radial bearing 15 is axial. It can be prevented from being pushed in the direction.
- the gap adjusting ring 18 is installed to support the outer ring of the first radial bearing 15 more stably is presented, but the outer ring of the first radial bearing 15 is the inner surface of the hub 11.
- the outer radial ring 15 may be fixed even if the gap adjusting ring 18 is not installed. Therefore, the gap adjusting ring 18 may be selectively employed according to the design.
- the inner ring of the first radial bearing 15 may be fixed not to be pushed in the axial direction by mounting the cylindrical wedge member 16 between the outer surface of the rotating shaft 5.
- the wedge member 16 has a tapered outer surface whose outer diameter is reduced toward the rear and a thread formed on the rear side outer surface thereof, and the inner surface may be press-fitted to the outer surface of the rotary shaft 5.
- the fastening nut 16a is fastened to the rear thread by the wedge member 16 to restrain the inner ring of the first radial bearing 15. Accordingly, the first radial bearing 15 may be firmly fixed between the outer surface of the rotation shaft 5 and the inner surface of the hub 11.
- a fixing clip 16b for preventing loosening may be fastened to the wedge member 16 and the tightening nut 16a.
- FIG. 6 is a detailed cross-sectional view illustrating a mounting structure of bearings for supporting the front propeller of the propulsion apparatus according to the exemplary embodiment of the present invention, in which the first radial bearing is separated.
- the front propeller 10 When installing the front propeller 10, first, the first thrust bearing 13, the second thrust bearing 14, the first and second support rings 17a, 17b, and the wedge member 16 on the outer surface of the rotating shaft 5; Can be installed sequentially. Next, as shown in FIG. 6, the hub 11 of the front propeller 10 is coupled to the outer side of the rotating shaft 5 so that the inner surfaces of the hub 11 are formed of the first and second thrust bearings 13 and 14. It can be combined with the outer ring. Subsequently, the first radial bearing 15 is pushed and installed between the outer surface of the wedge member 16 and the inner surface of the hub 11, and then the tightening nut 16a is fastened to the wedge member 16 to thereby first radial bearing. The inner ring of (15) can be fixed. After the first radial bearing 15 is installed, the gap adjusting ring 18 may be installed and the first sealing cover 71 may be mounted.
- the gap adjusting ring 18 measures the distance between the outer ring of the first radial bearing 15 and the first sealing cover 71 in a state where the first radial bearing 15 is mounted, and then installs the same after manufacturing the same. Can be.
- the front propeller 10 When the front propeller 10 is detached from the rotary shaft 5 for later troubleshooting, the first sealing cover 71 and the gap adjusting ring 18 are separated, and the fastening nut fastened to the wedge member 16. After releasing (16a) to allow the first radial bearing 15 to be separated, the front propeller 10 may be pulled backward to separate. After the front propeller 10 is removed, the first and second thrust bearings 13 and 14, the wedge member 16, and the first and second support rings 17a and 17b are exposed, so that they are also rotated. It can be easily separated from.
- FIG. 7 is a cross-sectional view showing an example of mounting the reverse rotation device of the propulsion apparatus according to an embodiment of the present invention, showing a state in which the reverse rotation device is separated.
- the gearbox 40 of the reverse rotation device 30 includes a driving bevel gear 31, a driven bevel gear 32, and a plurality of inversion bevel gears 33.
- a cylindrical body portion 41 which receives and opens both ends, a front cover 42 coupled to the body portion 41 to close the front side opening of the body portion 41, and a rear side of the body portion 41; It may include a rear cover 43 coupled to the body portion 41 to close the opening.
- the front cover 42 may rotatably support the first connecting member 35 penetrating the central portion thereof, and the rear cover 43 may rotatably support the second connecting member 36 penetrating the central portion thereof. I can support it.
- a front bearing 44 is installed between the outer surface of the first connecting member 35 and the front cover 42, and a rear outer bearing 45 is disposed between the outer surface of the second connecting member 36 and the rear cover 43. Can be installed.
- the rear outer bearing 45 may be rotated in a state in which a plurality of second connecting members 36 are stably supported by being installed in series in the longitudinal direction of the rotation shaft 5.
- a rear inner bearing 46 is installed between the inner surface of the second connecting member 36 and the rotating shaft 5 to support the rotatable support of the second connecting member 36, and the first connecting member 35 and the rotating shaft 5.
- a cylindrical sleeve bearing 47 may be installed between the outer surfaces.
- a cylindrical separation ring 49 supporting them may be installed on the outer surface of the rotary shaft 5 between the inner ring 46 and the inner ring 46 of the rear inner bearing 46.
- the front bearing 44, the rear outer bearing 45, the rear inner bearing 46 may all be composed of a radial bearing. These bearings 44, 45, 46 may implement their stable rotation while supporting radial loads acting on the rotary shaft 5, the first connecting member 35, and the second connecting member 36.
- the driving bevel gear 31 is connected to the first connecting member 35 by fastening a plurality of fixing bolts 31a to rotate together with the first connecting member 35.
- the driven bevel gear 32 is also connected to the second connection member 36 by fastening a plurality of fixing bolts 32a.
- the driven bevel gear 32 may have an inner diameter portion spaced apart from the rotation shaft 5 so that the driven bevel gear 32 does not interfere with the rotation shaft 5 during rotation.
- the plurality of inverted bevel gears 33 are interposed between the driving bevel gears 31 and the driven bevel gears 32 in a seized state.
- the shaft 34 supporting each of the inverted bevel gears 33 may be disposed in a direction intersecting with the rotation shaft 5 (radial direction of the rotation shaft), and a plurality may be radially disposed about the rotation shaft 5.
- bearings 34a and 34b may be installed at both ends of the shaft 34 of each inverted bevel gear 33 for smooth rotation of the shaft 34.
- the inner frame 50 may be installed in the gearbox 40 to install the inverted bevel gears 33, and the inner frame 50 may include a plurality of fixing members in a state of entering the gearbox 40. It can be fixed in the body portion 41 by fastening 51.
- the inner frame 50 has a through hole 52 through which the rotating shaft 5 penetrates in a central portion thereof, and a width W of the inverted bevel gear 33. It may be provided in the form of a cylinder or a polygonal column smaller than the maximum outer diameter of).
- the inner frame 50 accommodates each inverted bevel gear 33 to be rotatable, but a plurality of gears whose both sides are open so that the inverted bevel gear 33 can engage with the driving and driven bevel gears 31 and 32.
- the installation part 53 is provided.
- a first shaft support portion 54 and a second shaft support portion 55 are provided to support the bearings 34a and 34b provided at both ends of the shaft 34 of the inversion bevel gear 33, respectively. These configurations may be arranged radially with respect to the through-hole 52 so as to install a plurality of inverted bevel gears 33, respectively.
- the first shaft support part 54 and the second shaft support part 55 may be provided to open in one side direction of the inner frame 50 for mounting the inverted bevel gear shaft 34.
- the second fastening member 55a may be mounted on the first fastening member 54a to cover and fix the bearings 34a and 34b. Therefore, when the inverted bevel gears 33 are installed in the inner frame 50, the inverted bevel gears 33, the shaft 34 of the inverted bevel gears, and the bearings 34a and 34b are assembled to the inner frame. After installation in such a manner as to enter the gear mounting portion 53 from one side direction of the 50, the first and second fastening members 54a and 55a can be fastened and fixed.
- the mounting method of the reverse bevel gears 33 is not limited thereto.
- the manner of mounting the inverted bevel gear 33 to the inner frame 50 may also be changed.
- the inner frame 50 to which the inverted bevel gears 33 are mounted is driven bevel gear 31, driven bevel gear 32, front cover 42, and rear cover in the process of assembling the reverse rotation device 30. 43, before the installation into the body portion 41 of the gearbox 40, the plurality of fastening members 51 can be fastened and fixed in the body portion 41.
- the plurality of fixing members 51 may be provided in a cylindrical pin shape as shown in FIGS. 4 and 7.
- the fixing member 51 is installed to penetrate the body portion 41 from the outside of the body portion 41 into the body portion 41 so that the inner end thereof can support the inner frame 50 in a fixed state.
- the inner end of the fixing member 51 may engage the inner frame 50 by entering the fixing groove 56 around the inner frame 50.
- the outer end of the fixing member 51 may be fixed to the body portion 41 by fastening the fixing screw.
- the gearbox 40 after mounting the inverted bevel gear assembly including the inner frame 50 in the body portion 41, the driving bevel gear 31 and the driven bevel through the openings on both sides of the body portion 41
- the gear 32 may be installed, and then components such as the front cover 42, the rear cover 43, the first connecting member 35, and the second connecting member 36 may be installed. Therefore, the reverse rotation device 30 can be easily assembled, and the troubleshooting can be easily performed later.
- the inversion rotating device 30 shows a case in which the inversion bevel gears 33 are plural, but the inversion bevel gear 33 inverts the rotation of the driving bevel gear 31 to the driven bevel gear 32. It does not have to be plural because it may be delivered. Small vessels with small driving loads can be implemented with only one inverted bevel gear.
- FIG. 8 is a view illustrating a state in which a rotating shaft and a reverse rotation device are coupled to a propulsion device according to an embodiment of the present invention
- FIG. 12 is a perspective view illustrating a state in which a rotation prevention device is installed at the rear of the hull according to an embodiment of the present invention. .
- the embodiment includes a coupling device 60 for detachably connecting the rotary shaft 5 and the reverse rotation device (30).
- Coupling device 60 is a drive flange 61 provided on the rotary shaft 5 in front of the gear box 40, the driven flange 62 provided on the first connecting member 35 to face the drive flange 61, the drive flange It may include a friction member 63 interposed between the 61 and the driven flange 62, and a plurality of connecting bolts 64 for fastening them through.
- the drive flange 61 may be provided integrally with the rotation shaft 5 or separately manufactured and then fixed to the rotation shaft 5 by welding or the like.
- the driven flange 62 may be provided separately or integrally with the first connection member 35, and formed to have a diameter larger than the diameter of the driving flange 61 to facilitate coupling with the rotation preventing device 130 to be described later.
- the outer circumferential end may include a fastening hole 62a for coupling with the rotation preventing device 130 in a circumferential direction with a predetermined interval therebetween.
- the friction member 63 is interposed between the rotary shaft 5 and the reverse rotation device 30 to prevent mutual slip.
- the friction member 63 is penetrated by the connecting bolt 64 and between the driving flange 61 and the driven flange 62. Is fixed to.
- the friction member 63 is formed of a plurality of pieces to be separated to the outside at the time of separation of the coupling device 60, as shown in Figure 8, when separating the coupling device 60 after loosening and removing the connecting bolt 64 The pieces of friction member 63 can be separated radially outward.
- the coupling device 60 may disconnect the friction member 63 by releasing the plurality of connecting bolts 64 to cut off the power connection between the driving flange 61 and the driven flange 62 when necessary. For example, when a malfunction of the reverse rotation device 30 occurs during operation of the ship, power transmission from the rotation shaft 5 to the first connection member 35 may be blocked. In this case, the ship can be operated only by the operation of the rear propeller 20.
- the present embodiment includes a rotation preventing device 130 that prevents rotation of the front propeller 10 when the coupling device 60 is separated.
- FIG. 9 is a cross-sectional view showing a state in which the anti-rotation device is installed after the coupling device is separated from the propulsion device according to an embodiment of the present invention.
- one end of the anti-rotation device 130 is supported by the hull 1 to restrain the rotation of the driven flange 62 in front of the hull aft 3, and the other end of the anti-rotation device 130 is driven. And at least one shaft 131 supported at 62.
- At least one or more shafts 131 may be arranged in four places at equal intervals along the circumferential direction of the driven flange 62, and each shaft 131 may have one end at a shaft frame 132 installed at the hull rear end 3. It is rotatably supported, and the other end may be bolted and fixed through the fastening hole 62a of the driven flange 62.
- the driven flange 62 has a diameter relatively larger than the diameter of the drive flange 61 for convenience of bolt coupling with the other end of each shaft 131, and separate fastening holes 62a on the outer circumferential side as in the present embodiment. ) May be provided, but the other end of the shaft 131 may be coupled to the hole in which the connecting bolt 64 is separated after the separation of the coupling device 60. In this case, the driven flange 62 and the driving flange 61 are provided. The diameter of can also be kept the same.
- each shaft 131 is rotatably supported by the shaft 132a of the shaft frame 132, and the other end is provided with a bolt hole 133 for bolting and a fastening hole 62a of the driven flange 62.
- a bolt hole 133 for bolting and a fastening hole 62a of the driven flange 62.
- the operator may rotate the shafts 131 provided in front of the hull aft 3 from the inside of the hull 1.
- the reverse rotation apparatus 30 by the rotation of the front propeller 10 by coupling one end of the shaft to the shaft frame 132 and the other end of the bolt 134 to the fastening hole 62a of the driven flange 62. This will prevent further damage to the gears.
- the anti-rotation device 130 is to perform the restraint of the driven flange 62 by the manual operation of the operator, the anti-rotation device 130 is a friction pad (not shown) through the electronic control or hydraulic control method Of course, it is also possible to automatically restrain the rotation of the driven flange 62 by advancing and restraining the driven flange.
- the rotation preventing device 140 may be provided in the form of a disc brake installed near the hull aft 3 corresponding to the driven flange 62.
- a disk brake is a conventional brake device that obtains a braking force by compressing pads on both sides of a rotating disk and causing friction, and the anti-rotation device 140 of this embodiment protrudes more than an edge of the driving flange 61.
- a pair of friction pads 141 are spaced apart on both sides near the edge of the driven flange 62, and the pair of friction pads 141 are operated by a cylinder 143 that advances and retracts hydraulically to the driven flange 62. It may be provided to be compressed on both sides of the).
- the anti-rotation device 140 of the disc brake type has a pair of friction pads 141 for pressing both sides of the driven flange 62, but is provided to advance and retreat by hydraulic or pneumatic Of course, it may be provided with a friction pad in close contact with the edge of the flange (62). In this case, the friction pad may be formed in an arc shape to be in close contact with the edge of the driven flange 62.
- FIG. 15 is a partial cutaway perspective view showing a coupling device of the propulsion device according to another embodiment of the present invention
- Figure 16 is a sectional view of the main portion showing a state in which the coupling device is operated in the propulsion device according to another embodiment of the present invention.
- the same reference numerals are assigned to components having the same function, and detailed description thereof will be omitted.
- the coupling device may be configured as a clutch device 560 for selectively transmitting the power of the rotary shaft 5 to the reverse rotation device (30).
- the gearbox 40 of the reverse rotation device 30 includes a driving bevel gear 31, a driven bevel gear 32, and a plurality of inverted bevel gears 33.
- a cylindrical body portion 41 received at both ends and open at both ends, a front cover 42 coupled to the body portion 41 to close the front side opening of the body portion 41, and a rear portion of the body portion 41. It may include a rear cover 43 coupled to the body portion 41 to close the side opening.
- the front cover 42 can rotatably support the second gear unit 562, which will be described later, penetrating the central portion thereof, and the rear cover 43 rotates the second connecting member 36 which also penetrates the central portion thereof. I can possibly support it.
- a front bearing 44 is installed between the outer surface of the second gear unit 562 and the front cover 42, and a rear outer bearing 45 is disposed between the outer surface of the second connecting member 36 and the rear cover 43. Can be installed.
- the rear outer bearing 45 may be rotated in a state in which a plurality of second connecting members 36 are stably supported by being installed in series in the longitudinal direction of the rotation shaft 5.
- a rear inner bearing 46 is installed between the inner surface of the second connecting member 36 and the rotating shaft 5 to support the rotatable support of the second connecting member 36, and the second gear unit 562 and the rotating shaft 5 are provided.
- a cylindrical sleeve bearing 47 may be installed between the outer surfaces.
- a cylindrical separation ring 49 supporting them may be installed on the outer surface of the rotary shaft 5 between the inner ring 46 and the inner ring 46 of the rear inner bearing 46.
- the front bearing 44, the rear outer bearing 45, the rear inner bearing 46 may all be composed of a radial bearing. These bearings 44, 45, 46 may implement their stable rotation while supporting radial loads acting on the rotating shaft 5, the second gear unit 562, and the second connecting member 36.
- the driving bevel gear 31 is connected to the second gear unit 562 by fastening a plurality of fixing bolts 31a to rotate together with the second gear unit 562.
- the driven bevel gear 32 is also connected to the second connection member 36 by fastening a plurality of fixing bolts 32a.
- the driven bevel gear 32 may have an inner diameter portion spaced apart from the rotation shaft 5 so that the driven bevel gear 32 does not interfere with the rotation shaft 5 during rotation.
- the clutch device 560 includes a first gear unit 561 fixed to the rotation shaft 5, a second gear unit 562 fixed to the reverse rotation device 30, and first and second gear units 561 and 562. It may include a connection unit 630 for selectively connecting.
- the driving or operating state of the clutch device 560 means a state in which the first and second gear units 561 and 562 are connected, and the release state of the clutch device 560 means that the first and second gear units 561 and 562 are connected. It means a separated state.
- the first gear unit 561 may be provided integrally with the rotary shaft 5 or manufactured separately, and then fixed to the rotary shaft 5 by welding or press-fitting, etc.
- the first gear 561a may be formed on the outer ring.
- the second gear unit 562 is coupled to the reverse rotation device 30 and extends in front of the cylindrical portion 563 and the second gear portion 561a adjacent to the first gear portion 561a at the end of the cylindrical portion 563.
- a gear 564 is included.
- One end of the second gear unit 562 is coupled to the driving bevel gear 31 by a plurality of fixing bolts 31a, and the other end of the second gear unit 562 is leaked to the hull 1 toward the oil filled in the gearbox 40. Sealing cover is combined to prevent.
- a cylindrical sleeve bearing 47 may be installed between the second gear unit 562 and the outer surface of the rotation shaft 5.
- connection unit 630 is a retreat unit 631 which is slidable in the axial direction at the outer diameter of the cylindrical portion 563, and extends from the retreat unit 631, the first gear 561a and the second gear ( And a connection gear 632 having a tooth shape corresponding to 564.
- Advancing and retreating unit 631 is selectively provided to be able to move forward and along the axial direction, it is formed in a cylindrical housing accommodating the cylindrical portion (563).
- Hydraulic chambers 634a and 634b are formed between the advancing unit 631 and the cylindrical portion 563 to accommodate the fluid.
- the hydraulic chambers 634a and 634b are partitioned into first and second hydraulic chambers 634a and 634b by fixing portions 633 protruding annularly to the outer diameter of the cylindrical portion 563, and the retraction unit 631 is each hydraulic A pair of inlet and outlet holes 635a and 635b for supplying fluid to the chambers 634a and 634b or for discharging the fluid in the hydraulic chambers 634a and 634b to the outside are provided.
- connection gear 632 is coupled to the front side of the retreat unit 631 to move forward and backward in the axial direction according to the sliding movement of the retreat unit 631.
- the inner tooth of the connecting gear 632 has teeth corresponding to the first and second gears 61a and 64, and when the clutch device 560 is driven, the first and second gears 61a and 64 are connected to each other. When the drive of the device 560 is released, the first and second gears 61a and 64 are disconnected.
- An oil supply member 636 for supplying a fluid to the hydraulic chambers 634a and 634b is provided outside the advance unit 631.
- the oil supply member 636 is formed in a cylindrical shape surrounding the advancing unit 631, and oil lines 638a and 638b communicating with the entry and exit holes 635a and 635b penetrate the inside and outside of the oil supply member 636. Is formed.
- a bearing 637 is interposed between the advancing unit 631 and the oil supply member 636 to allow relative rotational movement of the oil supply member 636. Therefore, even when the advancing unit 631 rotates, the rotation of the oil supply member 636 can be restricted, thereby fixing the positions of the oil lines 638a and 638b.
- the oil supply member 636 is rotatably provided with respect to the retreat unit 631, and the rotation is limited.
- the oil supply member 636 is provided to retreat like the retreat unit 631 with respect to the axial movement of the retreat unit 631.
- the external hydraulic line (not shown) connected to the oil lines (638a, 638b) is a flexible pipe form to maintain the connection with the oil lines (638a, 638b) even during the advancing movement of the oil supply member 636 It can be prepared as.
- Inlet / outlet holes 635a and 635b of the advance and exit unit 631 and oil lines 638a and 638b of the oil supply member 636 may supply fluid to the hydraulic chambers 634a and 634b from the outside of the clutch device 560. Since the flow path is formed, the retraction unit 631 can be advanced in the axial direction by supplying or discharging oil to the first and second hydraulic chambers 634a and 634b.
- the clutch device 560 is operated to supply fluid to the second hydraulic chamber 634b through the second oil line 638b and the second entry and exit hole 635b (drain the fluid of the first hydraulic chamber 634a).
- the advance and retreat unit 631 is advanced so that the connection gear 632 couples the first and second gears 561a and 564, so that the power of the rotation shaft 5 is increased by the first and second gear units 561 and 562. It is transmitted to the reverse rotation device 30 through.
- the retraction unit 631 moves backwards, so that the first and second gears Connection gear 632 connecting the 561a, 564 is reversed along the retraction unit 631 to release the connection to block the transmission of the power of the rotary shaft 5 to the reverse rotation device (30).
- Such operation and release of the clutch device 560 senses a failure of the reverse rotation device 30 and the like and releases the clutch device 560 based on this, or an operator applies a signal through an input device (not shown).
- the clutch device 560 can be released or operated.
- the connection gear unit 632 automatically connects the first and second gear units 561a and 564 by sensing the failure of the reverse rotation device 30 or the like by operating the clutch device 560 through the input of an operator, By releasing the connection, the power of the rotary shaft 5 is selectively transmitted to the reverse rotation device 30.
- the outer diameters of the first gear 561a and the second gear 564 may be the same or different, so that the rotation speeds of the front propeller 10 and the rear propeller 20 may be different as necessary.
- One example is to operate the clutch device 560 by sliding the advancing unit 631 using hydraulic pressure, but it is a matter of course that the clutch device can be operated by using a mechanical configuration other than the electronic device or the hydraulic device.
- the clutch device 560 may block power transmission from the rotary shaft 5 toward the reverse rotation device 30 when a failure of the reverse rotation device 30 occurs during operation of the ship.
- the ship can be operated only by the operation of the rear propeller 20.
- the present embodiment includes a rotation preventing device 130 that prevents rotation of the front propeller 10 when the clutch device 560 is released.
- 17 is a main cross-sectional view showing a state in which the clutch device is released from the propulsion device according to an embodiment of the present invention, and a rotation preventing device is installed.
- the anti-rotation device 130 includes a flange portion 641 protruding radially from the outer circumferential surface of the connection gear 632, a shaft frame 132 fixed to the hull 1, and One end may be fixed to the flange portion 641 and the other end may include at least one shaft 131 is fixed to the shaft frame 132.
- the flange portion 641 is provided in the form of a flange on the outer circumferential surface of the connection gear 632, but is not limited thereto. If the position or shape is restricted to the rotation of the reverse rotation device, the limitation on the position or the shape may be limited. none.
- each shaft 131 is coupled to the shaft frame 132 and the other end is inverted by the rotation of the front propeller 10 by engaging the bolt 644 to the fastening hole 641a of the flange portion 641.
- the gears of the rotating device 30 are prevented from being further damaged.
- the second connection member 36 has a connection flange 37 connected to the hub 11 of the front propeller 10 at the rear end thereof.
- the connection flange 37 may be provided integrally with the second connection member 36 and may be fixed to the front surface of the hub 11 of the front propeller 10 by fastening the plurality of fixing bolts 37a. Therefore, the rotation of the driven bevel gear 32 may be transmitted to the front propeller 10 by the second connection member 36.
- a cylindrical third support ring 38a and a fourth support ring 38b may be installed between the second connection member 36 and the outer surface of the rotary shaft 5 to support the rear inner bearing 46.
- the third support ring 38a may be interposed between the inner ring of the rear inner bearing 46 and the inner ring of the first thrust bearing 13 to maintain a gap therebetween.
- the fourth support ring 38b may be installed on the inner surface side of the second connection member 36 to support the outer ring of the rear inner bearing 46.
- a fixing ring 39 may be mounted at the rear end of the second connection member 36 to prevent the fourth support ring 38b from being separated. As shown in FIGS. 2 and 5, the fixing ring 39 may support the outer ring of the first thrust bearing 13.
- the reverse rotation device 30 when the rotating shaft 5 rotates, the first connecting member 35 rotates, and the driving bevel gear 31 connected to the first connecting member 35 rotates. Since the rotation of the driving bevel gear 31 is inverted by the plurality of inversion bevel gears 33 and then transferred to the driven bevel gear 32, the driven bevel gear 32 rotates opposite to the driving bevel gear 31. The rotation of the driven bevel gear 32 is transmitted to the front propeller 10 by the second connection member 36. Therefore, it is possible to implement the opposite rotation of the front propeller 10 and the rear propeller 20.
- the reverse rotation device 30 of the present embodiment implements mutual inversion of the two propellers 10 and 20 through the plurality of bevel gears 31, 32 and 33, the volume of the reverse rotation device 30 is higher than that of the conventional planetary gear type reverse rotation device. Can be reduced. Therefore, it is possible to minimize the volume of the gearbox 40 installed in the hull aft (3).
- the conventional planetary gear type reverse rotation apparatus includes a sun gear installed on the rotating shaft, a planetary gear installed on the outside of the sun gear, and a cylindrical internal gear installed on the outside of the planetary gear, its volume is relatively large.
- the planetary gear type reverse rotation device since the planetary gear type reverse rotation device has to rotate the internal gear disposed at the outermost side, the outer casing must have a very large volume. Therefore, it is a very difficult problem to be installed in the rear of the hull as in the case of the present embodiment. Even if it is installed in the hull tail, there is a problem to increase the size of the hull tail.
- the propulsion device of the present embodiment as shown in Figure 2, the first seal for sealing between the hull aft 3 and the hub 11 of the front propeller 10 to prevent the ingress of seawater (or fresh water) or foreign matter Apparatus 90 and a second sealing device 110 for sealing between the hub 11 of the front propeller 10 and the hub 21 of the rear propeller 20 for the same purpose.
- FIG. 10 is a cross-sectional view of a first sealing device of the propulsion device according to the embodiment of the present invention.
- the first sealing device 90 includes a cylindrical first lining 91 installed on the connecting flange 37 of the second connecting member 36 fixed to the front surface of the front propeller hub 11.
- the first sealing member 92 may include a cylindrical first sealing member 92 covering an outer surface of the first lining 91 to be in contact with the outer surface of the first lining 91 and having one end fixed to the rear cover 43.
- the first sealing member 92 is installed on the inner surface facing the first lining 91 to be spaced apart from each other a plurality of packings (93a, 93b, 93c) in contact with the outer surface of the first lining 91, these packings 93a And a flow path 95 for supplying a fluid for sealing to the groove between the 93b and 93c.
- the flow path 95 of the first sealing member 92 may be connected to the lubricating oil supply passage 96 passing through the front and rear covers 42 and 43 of the gear box 40 so that the lubricating oil having a predetermined pressure may be supplied. (See FIG. 2).
- a lubricant with pressure is supplied to the grooves between the packings 93a, 93b, and 93c to press the packings 93a, 93b, and 93c toward the first lining 91 so as to be in close contact with each other to prevent the ingress of seawater or foreign matter. have.
- the first lining 91 may include a first member 91a and a second member 91b, each of which is divided into semicircles.
- the packing 91d may be interposed in the mutually divided portions 91c of the first and second members 91a and 91b so that the sealing may be performed when they are joined to each other.
- a first binding portion 91e protruding from one side to the opposite side is provided on the divided part free end side of the first member 91a, and a second binding portion correspondingly coupled to the opposite second member 91b.
- 91f is provided, whereby fixing bolts 91g are fastened so that both sides can be firmly coupled to each other.
- a plurality of fixing bolts 91i are fastened to the flange portion 91h fixed to the connecting flange 37, thereby being firmly fixed to the hub 11.
- the first lining 91 is divided into two sides for easy installation of the first lining 91 is shown.
- the first lining 91 is not limited thereto, and the first member 91a and the second lining 91 are not limited thereto. It may be a cylindrical shape in which the member 91b is integrally connected.
- a plurality of rings 92a, 92b and 92c formed in a semicircular shape may be stacked and fixed in the longitudinal direction of the rotation shaft 5 outside the first lining 91.
- the plurality of rings 92a, 92b and 92c may be tied together by bolting or welding.
- FIG. 11 is a cross-sectional view of a second sealing device of the propulsion apparatus according to the embodiment of the present invention.
- the second sealing device 110 includes a cylindrical second lining 111 provided on the front surface of the rear propeller hub 21 and a second lining so as to contact an outer surface of the second lining 111. 111) may cover the outer surface and one end thereof may include a cylindrical second sealing member 112 fixed to the rear surface of the front propeller hub (11).
- the second sealing member 112 also includes a plurality of packings 113a, 113b and 113c provided on an inner surface thereof, and a flow path 115 for supplying a fluid to the grooves between the packings.
- the flow path 115 of the second sealing member 112 may communicate with the lubricating oil supply flow path 120 provided at the center of the rotation shaft 5.
- a radial first connection passage 121 is formed in the rotary shaft 5 to connect the lubricating oil supply passage 120 and the inner space 122 of the second lining 111, and the front propeller hub 11 is formed at the front propeller hub 11.
- a second connection passage 123 may be formed to communicate the inner space 122 of the second lining 111 and the flow passage 115 of the second sealing member 112. Therefore, the lubricating oil supplied from the center of the rotation shaft 5 toward the second sealing member 112 may press the packings 113a, 113b, and 113c, thereby realizing sealing.
- the second lining 111 and the second sealing member 112 are also made of semi-circular shapes, so that the second propeller 20 It can be combined after installation.
- the front propeller 10 is formed in a ring shape mounted on the rear side of the hub 11 to seal a gap between the outer surface of the rotating shaft 5 and the inner surface of the hub 11.
- 1 includes a sealing cover (71).
- the first sealing cover 71 is provided with a sealing member 71a for enhancing adhesion to the inner circumferential surface in contact with the outer surface of the rotating shaft 5.
- the first sealing cover 71 can prevent the seawater from flowing into the gearbox 40 even if seawater invades the inner space 122 of the second lining 111 due to the failure of the second sealing device 110. have. That is, the first sealing cover 71 can more reliably prevent seawater intrusion into the gearbox 40 by implementing the secondary barrier.
- the driven flange 62 in front of the gearbox 40 has a second shape similar to the aforementioned first sealing cover 71 for sealing between the driven flange 62 and the outer surface of the rotation shaft 5.
- the sealing cover 72 may be installed.
- the second sealing cover 72 may prevent the lubricant oil filled in the gearbox 40 from leaking toward the hull 1.
- the reverse rotation device 30 has a front sealing cover 73 for sealingly covering the front surface of the front bearing 44 between the front cover 42 and the first connecting member 35, and the rear cover 43 and the second connection. It may include a rear sealing cover 74 to sealably cover the rear of the rear outer bearing 45 between the members (36).
- the front and rear sealing covers 73 and 74 may also be provided in a similar form to the first sealing cover 71 described above.
- the front sealing cover 73 and the rear sealing cover 74 may prevent the lubricant in the gearbox 40 from leaking out of the gearbox 40.
- the rear sealing cover 74 like the first sealing cover 71, even if seawater enters the inner space of the first lining 91 due to the failure of the first sealing device 90, the seawater flows into the gearbox 40. It can also function as a secondary barrier that prevents it from becoming.
- the propulsion apparatus of the present embodiment may include a second radial bearing 81, a third thrust bearing 82, and a fourth thrust bearing 83 for supporting the rotation shaft 5 in front of the gearbox 40.
- the second radial bearing 81 may be fixed to the first bearing support portion 86 inside the hull 1 in a state in which the second radial bearing 81 is accommodated in the first bearing case 84.
- the third and fourth thrust bearings 82 and 83 may also be fixed to the second bearing support portion 87 inside the hull 1 in a state in which the respective inner rings are accommodated in the second bearing case 85 so as to support each other. have.
- the second radial bearing 81 supports the rotating shaft 5 in front of the gearbox 40 to prevent radial vibration or shaking of the rotating shaft 5.
- the third and fourth thrust bearings 82 and 83 function to transfer the axial force transmitted from the front and rear propellers 10 and 20 to the rotation shaft 5 toward the hull 1.
- the third thrust bearing 82 has a function of transmitting the force acting in the bow direction from the rotary shaft 5 to the hull 1 when the ship moves forward
- the fourth thrust bearing 83 has the rotary shaft when the ship moves backward ( It serves to transmit the force acting in the stern direction from 5) to the hull (1).
- reference numeral 128 denotes a first covering covering the hull aft 3 and the front propeller hub 11 outside the first sealing device 90
- reference numeral 129 denotes a front propeller hub outside the second sealing device 110.
- the first covering 128 is fixed to the hull aft 3 and is installed in a manner slightly spaced from the hub 11 of the front propeller, or the hub of the front propeller 10 in a state slightly spaced from the hull aft 3. It is fixed to 11) can rotate with the front propeller (10).
- the second covering 129 may also rotate together with the side that is fixed in a state fixed to either one of the hub 11 of the front propeller and the hub 21 of the rear propeller.
- the following describes a method of manufacturing a propulsion device according to the present embodiment and installing it on the hull.
- the gearbox 40 and the related parts and the rotating shaft 5 constituting the reverse rotation device 30 are assembled prior to mounting on the hull 1. That is, the inner frame 50, the driving bevel gear 31, the driven bevel gear 32, the first connecting member 35, the body portion 41, the inverted bevel gear 33 is assembled outside the rotating shaft (5), The front cover 42, the front bearing 44, the second connecting member 36, the rear cover 43, the rear outer bearing 45 and the like are assembled. The first lining 91 and the first sealing member 92 of the first sealing device 90 are also installed between the connecting flange 37 and the rear cover 43 of the second connecting member 36.
- the reverse rotation device 30 can be assembled after processing the respective parts in a separate manufacturing plant, it is possible to manufacture a sophisticated.
- the first sealing device 90 which should be installed after the installation of the front propeller 10 in advance, can be mounted in the reverse rotation device 30 in advance, the operation of installing the propulsion device on the hull 1 is simplified later. can do.
- the rotating shaft 5 and the reverse rotation apparatus 30 assembled at the manufacturing plant may be mounted on a tail 3 of the hull 1 after being moved to a dock for manufacturing the hull 1 using a transport means.
- a lifting device such as a crane capable of lifting the reverse rotation device 30 assembly may be used.
- the gearbox 40 of the reverse rotation device 30 is first slid into the installation space 4 of the hull aft 3 from the rear of the hull 1.
- the center of the rotation shaft 5 and the center of the main drive shaft 6 are aligned.
- the front fixing members 48a are respectively located at the front and the rear of the gearbox 40.
- a rear fixing member 48b to fix the gearbox 40 to the hull aft 3.
- the front and rear fixing members 48a and 48b may be divided into a plurality of forms.
- the front and rear fixing members 48a and 48b may be fixed to the structure of the gearbox 40 and the hull aft 3 by fastening a plurality of fixing bolts.
- the rear fixing member 48b can be mounted by an operator approaching from the rear of the hull 1, and the front fixing member 48a can be mounted by an operator approaching from the inside of the hull 1.
- the reverse rotation device 30 mounted in the manner of entering the installation space 4 of the hull aft 3 may separate the reverse rotation device 30 from the hull 1 when a failure occurs later. Troubleshooting can be done in this state. Therefore, troubleshooting can be easily performed.
- the present exemplary embodiment illustrates the case in which the front fixing member 48a and the rear fixing member 48b are fastened to the front and rear of the gear box 40 to secure the gear box 40
- the gear box 40 is fastened.
- the outer surface of the gear box 40 is maintained in the state supported on the inner surface of the installation space (4), the gear box 40 is also fastened only to the rear fixing member 48b hull rear It can be fixed to (3).
- the gearbox 40 After the gearbox 40 is fixed to the hull aft 3, the main drive shaft 6 and the rotation shaft 5 are connected with the coupling device 7, and the second radial bearing 81 is installed inside the hull 1. ), The third and fourth thrust bearings (82, 83) are installed so that the rotating shaft (5) can be supported by the hull (1).
- the reverse rotation device 30 is mounted on the rear end 3 of the hull, as shown in FIGS. 1 and 2, the front propeller 10, the rear propeller 20, and related parts are mounted on the rotation shaft 5.
- the installation of the propulsion device can be completed by attaching the second sealing device 110.
- the propulsion device rotates together with the rear propeller 20 directly connected to the rear end of the rotation shaft 5 in the same direction as the rotation shaft 5 when the rotation shaft 5 is rotated by the operation of the inner drive source 8 of the hull 1.
- the driving bevel gear 31 of the reverse rotation device 30 is also fixed to the rotation shaft 5 and rotates together with the rotation shaft 5. Since the rotation of the driving bevel gear 31 is inverted by the plurality of inversion bevel gears 33 and transferred to the driven bevel gear 32, the driven bevel gear 32 rotates opposite to the rotation shaft 5. Therefore, the front propeller 10 connected by the driven bevel gear 32 and the second connection member 36 rotates opposite to the rear propeller 20.
- the front propeller 10 and the rear propeller 20 rotating opposite to each other generate propulsion water in the same direction because the wing angles are opposite to each other.
- each propulsion water is generated while rotating in reverse.
- the propulsion water generated when moving forward recovers the rotational energy of the fluid passing through the front propeller 10 as the propulsion force while the rear propeller 20 rotates backward, thereby improving the propulsion performance. The same applies when reversing.
- the front propeller (10) generates a propulsion water to the rear when moving forward receives a corresponding reaction force.
- This force is transmitted to the rotating shaft 5 through the second thrust bearing 14 to act as a driving force.
- the rear propeller 20 also receives a reaction force by generating a propulsion flow rearward when moving forward, this force is also transmitted to the direct rotation shaft (5) acts as a driving force.
- the propulsion device of the present embodiment is transmitted to the rotary shaft 5 when the ship is moving forward and backward when the driving force generated by the operation of the front propeller 10 and the rear propeller 20. And the propulsion force transmitted to the rotary shaft 5 is transmitted to the hull 1 through the third and fourth thrust bearings 82 and 83, so the propulsion of the hull 1 is made.
- the engine is first stopped and the coupling device 60 is disconnected to block the transmission of the power of the rotation shaft 5 to the reverse rotation device 30. do.
- the connecting bolt 64 coupling the driving flange 61 and the driven flange 62
- the friction member 63 interposed between the drive flange 61 and the driven flange 62 is separated. .
- both ends of the shaft 131 are respectively fastened in the fastening hole 62a and the hull aft of the driven flange 62. It is fixed to the shaft frame 132.
- the power of the rotating shaft 5 is prevented from being transmitted to the reverse rotation device 30, and the engine is operated in a state in which the rotation of the front propeller 10 is limited, whereby a plurality of gear units in the reverse rotation device 30 are provided.
- the ship can be operated only by the propulsion force of the rear propeller 20 while preventing damage to each component such as (31, 32, 33).
- the sensor or the like detects this and transmits a signal, or the operator releases the clutch device 560 through an input device (not shown).
- the clutch device 560 is released, the advance and retreat unit 631 retreats backward so that the connection between the first gear unit 561 and the second gear unit 562 is released and the power of the rotary shaft 5 is reversed. To be blocked).
- the rotation of the front propeller 10 is limited by using the anti-rotation device 130, and both ends of the shaft 131 are connected to the fastening hole 641 a of the flange portion 641 and the shaft of the hull aft 3, respectively. It is fixed to the frame 132.
- the power of the rotating shaft 5 is prevented from being transmitted to the reverse rotation device 30, and the engine is operated in a state in which the rotation of the front propeller 10 is limited, whereby a plurality of gear parts in the reverse rotation device 30 are provided.
- the ship can be operated only by the propulsion force of the rear propeller 20 while preventing damage to each component such as (31, 32, 33).
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Gear Transmission (AREA)
- Arrangement Of Transmissions (AREA)
- General Details Of Gearings (AREA)
Abstract
Description
Claims (15)
- 회전축과,상기 회전축에 고정된 후방프로펠러와,상기 후방프로펠러 전방의 상기 회전축에 회전 가능하게 지지된 전방프로펠러와,선체 후미의 설치공간에 안착되며, 상기 회전축의 회전을 상기 전방프로펠러로 반전시켜 전달하는 복수의 기어와, 상기 복수의 기어를 수용하는 기어박스를 포함하는 반전회전장치와,상기 회전축과 상기 반전회전장치를 분리 가능하게 연결하며 분리시 상기 회전축에서 상기 반전회전장치로의 동력전달을 차단시키는 결합장치와,상기 결합장치의 분리시 상기 전방프로펠러의 회전을 방지하기 위한 회전방지장치를 포함하는 선박용 추진장치.
- 제1항에 있어서,상기 결합장치는 상기 회전축과 상기 반전회전장치사이에 개재되어 슬립을 방지하는 마찰부재를 포함하는 선박용 추진장치.
- 제2항에 있어서,상기 결합장치는 상기 회전축의 반경방향으로 형성된 구동플랜지와, 상기 구동플랜지를 관통하여 상기 회전축을 상기 반전회전장치와 결합시키는 복수의 연결볼트를 포함하는 선박용 추진장치.
- 제3항에 있어서,상기 마찰부재는 상기 볼트의 분리시 상기 회전축과 상기 반전회전장치 사이에서 이탈될 수 있도록 복수의 조각으로 형성되는 선박용 추진장치.
- 제3항에 있어서,상기 복수의 기어는 구동베벨기어와, 상기 전방프로펠러에 동력을 전달하는 피동베벨기어와, 상기 구동베벨기어의 회전을 상기 피동베벨기어로 반전시켜 전달하는 하나 이상의 반전베벨기어와, 상기 구동베벨기어와 연결되어 상기 구동플랜지측으로 연장된 제1연결부재를 포함하는 선박의 추진장치.
- 제1항에 있어서,상기 결합장치는 상기 반전회전장치에서 연장되어 상기 회전축의 구동력을 전달받는 피동플랜지를 더 포함하고,상기 회전방지장치는 상기 피동플랜지를 상기 선체에 고정시키는 샤프트를 포함하는 선박용 추진장치.
- 제6항에 있어서,상기 피동플랜지는 상기 샤프트의 일단이 고정되는 체결홀을 포함하고,상기 선체는 상기 샤트프의 타단이 고정되는 샤프트프레임을 포함하는 선박용 추진장치.
- 제5항에 있어서,상기 회전방지장치는 상기 제1연결부재와 상기 구동플랜지의 연결 해제시 상기 제1연결부재의 회전을 구속하는 선박용 추진장치.
- 제1항에 있어서,상기 결합장치는 상기 반전회전장치에서 연장되어 상기 회전축의 구동력을 전달받는 피동플랜지를 더 포함하고,상기 회전방지장치는 상기 피동플랜지의 가장자리 양측에 마주하게 배치되는 한 쌍의 마찰패드를 구비한 디스크 브레이크를 포함하는 선박용 추진장치.
- 제1항에 있어서,상기 결합장치는 상기 회전축에 고정된 제1치차유닛과, 상기 반전회전장치에 고정된 제2치차유닛과, 상기 제1치차유닛과 상기 제2치차유닛을 선택적으로 연결하는 연결유닛을 포함하는 클러치 장치로 구성되는 선박용 추진장치.
- 제10항에 있어서,상기 제2치차유닛은 상기 반전회전장치에 결합된 원통부와, 상기 원통부의 단부에서 상기 제1치차유닛의 제1치차부에 인접한 상태로 배치되는 제2치차부를 포함하는 선박용 추진장치.
- 제11항에 있어서,상기 연결유닛은 상기 원통부의 외경에 마련되어 상기 원통부를 따라 축방향으로 슬라이딩하는 진퇴유닛과, 상기 진퇴유닛에서 연장되어 상기 제1치차부와 상기 제2치차부에 대응하는 연결치차부를 포함하는 선박용 추진장치.
- 제12항에 있어서,상기 클러치장치는 상기 진퇴유닛과 상기 제2치차유닛사이에 구획되어 상기 진퇴유닛의 슬라이딩이 가능하도록 유체가 수용되는 유압실을 포함하는 선박용 추진장치.
- 제13항에 있어서,상기 클러치장치는 상기 유압실로 유체를 공급하는 유로를 포함하는 선박용 추진장치.
- 제10항에 있어서,상기 복수의 기어는 구동베벨기어와, 상기 전방프로펠러에 동력을 전달하는 피동베벨기어와, 상기 구동베벨기어의 회전을 상기 피동베벨기어로 반전시켜 전달하는 하나 이상의 반전베벨기어를 포함하고,상기 제2치차유닛은 상기 구동베벨기어와 연결되어 상기 제1치차유닛측으로 연장되는 선박의 추진장치.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK13788165.2T DK2848517T3 (en) | 2012-05-10 | 2013-05-08 | Propulsion device for a ship and ship with this device |
US14/399,948 US9751603B2 (en) | 2012-05-10 | 2013-05-08 | Propulsion device for ship and ship comprising the same |
JP2015511359A JP5996788B2 (ja) | 2012-05-10 | 2013-05-08 | 船舶用推進装置及びこれを含む船舶 |
CN201380024312.XA CN104321249B (zh) | 2012-05-10 | 2013-05-08 | 船用推进器及具备该推进器的船舶 |
EP13788165.2A EP2848517B1 (en) | 2012-05-10 | 2013-05-08 | Propulsion device for ship and ship comprising same |
Applications Claiming Priority (6)
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KR1020120049616A KR101422471B1 (ko) | 2012-05-10 | 2012-05-10 | 선박용 추진장치 및 이를 갖춘 선박 |
KR10-2012-0049616 | 2012-05-10 | ||
KR10-2012-0050169 | 2012-05-11 | ||
KR1020120050175A KR101422472B1 (ko) | 2012-05-11 | 2012-05-11 | 선박용 추진장치 및 이를 포함하는 선박 |
KR10-2012-0050175 | 2012-05-11 | ||
KR1020120050169A KR101422491B1 (ko) | 2012-05-11 | 2012-05-11 | 선박용 추진장치 및 이를 포함하는 선박 |
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WO2013168986A1 true WO2013168986A1 (ko) | 2013-11-14 |
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PCT/KR2013/003990 WO2013168986A1 (ko) | 2012-05-10 | 2013-05-08 | 선박용 추진장치 및 이를 포함하는 선박 |
Country Status (6)
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US (1) | US9751603B2 (ko) |
EP (1) | EP2848517B1 (ko) |
JP (1) | JP5996788B2 (ko) |
CN (1) | CN104321249B (ko) |
DK (1) | DK2848517T3 (ko) |
WO (1) | WO2013168986A1 (ko) |
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KR102180379B1 (ko) * | 2019-11-27 | 2020-11-18 | 신재용 | 클러치를 이용한 추진 및 제동 시스템 |
US11364987B1 (en) | 2019-12-20 | 2022-06-21 | Brunswick Corporation | Systems and methods for absorbing shock with counter-rotating propeller shafts in a marine propulsion device |
US11358697B1 (en) * | 2020-01-08 | 2022-06-14 | Brunswick Corporation | Systems and methods for rotatably supporting counter-rotating propeller shafts in a marine propulsion device |
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- 2013-05-08 CN CN201380024312.XA patent/CN104321249B/zh not_active Expired - Fee Related
- 2013-05-08 DK DK13788165.2T patent/DK2848517T3/en active
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Also Published As
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CN104321249B (zh) | 2016-12-14 |
US20160194066A1 (en) | 2016-07-07 |
EP2848517B1 (en) | 2017-07-05 |
CN104321249A (zh) | 2015-01-28 |
JP2015517428A (ja) | 2015-06-22 |
JP5996788B2 (ja) | 2016-09-21 |
EP2848517A4 (en) | 2016-04-06 |
DK2848517T3 (en) | 2017-09-25 |
US9751603B2 (en) | 2017-09-05 |
EP2848517A1 (en) | 2015-03-18 |
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