KR20160046040A - Propulsion apparatus for ship - Google Patents
Propulsion apparatus for ship Download PDFInfo
- Publication number
- KR20160046040A KR20160046040A KR1020140141029A KR20140141029A KR20160046040A KR 20160046040 A KR20160046040 A KR 20160046040A KR 1020140141029 A KR1020140141029 A KR 1020140141029A KR 20140141029 A KR20140141029 A KR 20140141029A KR 20160046040 A KR20160046040 A KR 20160046040A
- Authority
- KR
- South Korea
- Prior art keywords
- bearing
- outer shaft
- thrust
- shaft bearing
- hub
- 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
- B63H1/00—Propulsive elements directly acting on water
- B63H1/02—Propulsive elements directly acting on water of rotary type
- B63H1/12—Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
- B63H1/14—Propellers
- B63H1/20—Hubs; Blade connections
-
- 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
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Sliding-Contact Bearings (AREA)
- Mounting Of Bearings Or Others (AREA)
Abstract
The propulsion device for a ship according to an embodiment of the present invention includes a thrust transmitting outer shaft bearing provided on an inner circumferential surface of a hub connected to an outer shaft and tapered; And a thrust transmitting inner shaft bearing provided inside the hub and tapered corresponding to the thrust transmitting outer shaft bearing and installed on an inner shaft passing through the hub on the vertical axis with the thrust transmitting outer shaft bearing.
The propulsion device for a ship according to the present invention is a bearing structure provided inside a hub of a front propeller on the outer circumferential surface of an inner shaft and a tapering station includes a thrust transmission outer shaft bearing and a thrust transmission inner shaft bearing, The thrust can be improved by transmitting the reaction force to the power source side.
Description
The present invention relates to a marine propulsion device.
The propeller is a device for propelling the ship by changing the power of the propulsion engine transmitted through the shaft system to thrust. Ship propellers include screw propellers, jet propellers, paddle cars, and void schneider propellers. Among them, helical propellers are the most popular because they have a relatively high propulsion efficiency, relatively simple structure, and relatively low production costs.
Spiral propellers can be classified by performance, with a fixed pitch propeller (FPP) fixed to a hub connected to a rotating shaft of the propeller wing, and a propeller wing can be moved in a hub connected to the rotary shaft, A controllable pitch propeller (CPP), a contra-rotating propeller that converts the rotational force exiting from the rear propeller to a propeller that rotates in the opposite direction to the rear propeller, propeller (CRP).
In general, a propulsion device for a ship using a double reversing propeller includes an inner shaft connected to a main engine in a hull, a front propeller coupled to a rear end of the inner shaft, a hollow outer shaft provided to rotate on the outer surface of the inner shaft, And a rear propeller coupled to the end portion. At this time, a contra-rotating gear box can be used as a means for rotating the rear propeller in the direction opposite to the rotation direction of the front propeller.
Such a double-inverted propeller is excellent in straightness of the route, low vibration, low noise, and high efficiency because propeller thrust is increased, because the torque unbalance induced by the propeller is reduced and the heeling torque is reduced. In addition, the dual inversion propeller can reduce the EEDI (Energy Efficiency Design Index), which can easily meet the EEDI requirements of the International Maritime Organization (IMO). The following description will be made with reference to the drawings.
1 is a view conceptually showing a conventional marine propulsion device.
1, a conventional
The conventional
In addition, due to the characteristics of the ship, which is a large structure, the propulsion device for
The
In recent years, research and development have been carried out to solve the above-mentioned problems and to enable the application of the double inverted propeller to the ship through the improvement of the mechanical reliability, the minimization of the production maintenance cost and the improvement of the operating economical efficiency.
Such conventional techniques are disclosed in Korean Patent Publication No. 10-1313587 (Feb.
It is an object of the present invention to provide a propulsion device for a ship capable of improving a propulsion force of a ship by improving a bearing structure.
The propulsion device for a ship according to an embodiment of the present invention includes a thrust transmitting outer shaft bearing provided on an inner circumferential surface of a hub connected to an outer shaft and tapered; And a thrust transmitting inner shaft bearing provided inside the hub and tapered corresponding to the thrust transmitting outer shaft bearing and installed on an inner shaft passing through the hub on the vertical axis with the thrust transmitting outer shaft bearing.
Specifically, the thrust transmission outer shaft bearing and the thrust transmission inner shaft bearing are each formed in a pair, and the pair of thrust transmission outer shaft bearings and the thrust transmission inner shaft bearing are tapered in opposite directions.
Specifically, the thrust transmission outer shaft bearing includes: a first outer shaft bearing provided on the hub; And a second outer shaft bearing provided at the hub rearward of the first outer shaft bearing, wherein the thrust transmitting inner shaft bearing comprises: a first inner bearing provided on the inner shaft; And a second inner bearing provided on the inner shaft at a rear portion of the first inner bearing, wherein the first outer bearing is reduced in cross sectional area as it goes forward, the second outer bearing is increased in cross section as it goes forward, The first inner bearing is increased in cross sectional area toward the front side, and the second inner bearing is reduced in cross sectional area toward the front side.
Specifically, the present invention is characterized by further comprising an auxiliary bearing provided between the inner shaft and the outer shaft, the auxiliary bearing being provided in the reverse gear device.
Specifically, the reversing gear device includes an LO tank through which the lubricating oil flows, and the lubricating oil of the LO tank circulates between the inner shaft and the outer shaft of the reversing gear device.
Specifically, the thrust transmitting inner shaft bearing and the thrust transmitting outer shaft bearing have the same length.
Specifically, each of the front bearing and the rear bearing is formed in a ring shape.
The propulsion device for a ship according to the present invention is a bearing structure provided inside a hub of a front propeller on the outer circumferential surface of an inner shaft and a tapering station includes a thrust transmission outer shaft bearing and a thrust transmission inner shaft bearing, The thrust can be improved by transmitting the reaction force to the power source side.
Further, according to the present invention, by providing a bearing structure inside the hub, it is possible to repair thrust transmission outer shaft bearing and thrust transmission inner shaft bearing by the separation operation of the hub without disassembling the outer shaft and inner shaft, .
1 is a view conceptually showing a conventional marine propulsion device.
2 is a view illustrating a marine propulsion device according to an embodiment of the present invention.
3 is a view illustrating a state in which a propulsion device for a ship according to an embodiment of the present invention is separated.
BRIEF DESCRIPTION OF THE DRAWINGS The objects, particular advantages and novel features of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. It should be noted that, in the present specification, the reference numerals are added to the constituent elements of the drawings, and the same constituent elements have the same numerical numbers as much as possible even if they are displayed on different drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 2 is a view showing a propulsion device for a ship according to an embodiment of the present invention, and FIG. 3 is a view illustrating a state in which a propulsion device for a ship according to an embodiment of the present invention is separated.
2 and 3, a
Hereinafter, the
The
The
The
The
A
A lubricating oil passage O is formed between the inner and
Here, the lubricating oil may be supplied from the outside of the
The
The
Here, the thrust transmitting inner shaft bearing 180 constitutes a ring-shaped inner ring, and the thrust transmitting outer shaft bearing 170 constitutes an outer ring having a ring shape and is provided on the outer circumferential surface of the
The thrust transmission inner shaft bearing 180 and the thrust transmission outer shaft bearing 170 support the
Specifically, the thrust transmission outer shaft bearing 170 is provided on the inner circumferential surface of the
For example, the first outer shaft bearing 171 may be provided in front of a pair of thrust transmission
The thrust transmitting inner shaft bearing 180 is tapered correspondingly to the thrust transmitting outer shaft bearing 170 so as to be able to transmit or receive a reaction force when abutting against the thrust transmitting outer shaft bearing 170, And are provided in pairs on the
For example, the thrust transmitting end bearing 180 may comprise a first
The present embodiment is configured to transmit the reaction force against the thrust generated from the rear of the
The second inner shaft bearing 182 and the second inner shaft bearing 182 are connected to each other so that the reaction force against the thrust generated from the rear of the
In the present embodiment, the cross-sectional area of the first outer shaft bearing 171 decreases as it goes forward, and as the cross-sectional area of the second outer shaft bearing 172 increases toward the front, 150 and the thrust transferring
By providing the bearing structure inside the
The
To this end, the
As described above, according to the present embodiment, since the tapering member includes the thrust transmitting outer shaft bearing 170 and the thrust transmitting inner shaft bearing 180, the tapered bearing transmits the reaction force from the front and rear to the
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the same is by way of illustration and example only and is not to be construed as limiting the present invention. It is obvious that the modification and the modification are possible.
It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
10, 100:
9, 120: rear propeller 11, 140: outer shaft
12, 150:
14: Reverse gear device 15: Elastic coupling
130: hub 131: seal
160: power source 161: drive shaft
162: connection flange 163: coupling
170: thrust transmission outer shaft bearing 171: first outer shaft bearing
172: second outer shaft bearing 180: thrust transmitting inner shaft bearing
181: first inner shaft bearing 182: second inner shaft bearing
190:
191: carrier 192: ring gear
193: Pinion gear 194: LO tank
Claims (7)
And a thrust transmitting inner shaft bearing provided inside the hub and tapered corresponding to the thrust transmitting outer shaft bearing and installed on an inner shaft passing through the hub on the vertical axis with the thrust transmitting outer shaft bearing.
Wherein each of the thrust transferring outer shaft bearing and the thrust transferring inner shaft bearing is formed in a pair, wherein each of the pair of thrust transferring outer shaft bearings and the thrust transferring inner shaft bearing are tapered in opposite directions.
The thrust transmission outer shaft bearing comprises:
A first outer shaft bearing provided on the hub; And
And a second outer shaft bearing provided at a rear portion of the first outer shaft bearing at the hub,
The thrust transmitting internal shaft bearing comprises:
A first inner bearing provided on the inner shaft; And
And a second internal bearing provided at the rear of the first internal bearing in the internal shaft,
Wherein the first outer axial bearing is reduced in cross sectional area as it goes forward and the cross sectional area of the second outer axial bearing increases as it goes forward, the sectional area of the first inner axial bearing increases as it goes forward, Is reduced.
Further comprising an auxiliary bearing provided between the inner shaft and the outer shaft, the auxiliary bearing being provided to the reverse gear device.
The reversing gear device includes an LO tank through which lubricating oil flows,
And the lubricating oil of the LO tank circulates between the inner shaft and the outer shaft of the reversing gear device.
Wherein the thrust transmitting inner shaft bearing and the thrust transmitting outer shaft bearing have the same length.
And a ring-shaped propelling device.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020140141029A KR20160046040A (en) | 2014-10-17 | 2014-10-17 | Propulsion apparatus for ship |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020140141029A KR20160046040A (en) | 2014-10-17 | 2014-10-17 | Propulsion apparatus for ship |
Publications (1)
Publication Number | Publication Date |
---|---|
KR20160046040A true KR20160046040A (en) | 2016-04-28 |
Family
ID=55915030
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020140141029A KR20160046040A (en) | 2014-10-17 | 2014-10-17 | Propulsion apparatus for ship |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR20160046040A (en) |
-
2014
- 2014-10-17 KR KR1020140141029A patent/KR20160046040A/en not_active Application Discontinuation
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