CN102159453A - Ship propulsion device and ship with same - Google Patents
Ship propulsion device and ship with same Download PDFInfo
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- CN102159453A CN102159453A CN2010800026105A CN201080002610A CN102159453A CN 102159453 A CN102159453 A CN 102159453A CN 2010800026105 A CN2010800026105 A CN 2010800026105A CN 201080002610 A CN201080002610 A CN 201080002610A CN 102159453 A CN102159453 A CN 102159453A
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- 230000000694 effects Effects 0.000 description 9
- 239000012530 fluid Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000001141 propulsive effect Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
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- 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
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- 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
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- 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
- B63H1/26—Blades
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Provided is a ship propulsion device which comprises a screw propeller using a fin-equipped propeller boss cap, the ship propulsion device having better workability and less weight than a ship propulsion device using a propeller boss cap provided with fins having a prior art shape. Also provided is a ship provided with the ship propulsion device. The shape of the rear half of fins (6) is formed in such a manner that, with the diameter (Dcf) of the front end of a propeller boss cap (5) defined as the reference diameter (Ds), the shape is contained within a truncated cone formed between the bases thereof which are a circle (C3) centered on the rotation center of the propeller and having a diameter (D3) which is defined at the center position (Xm) between the front end (6f) and the rear end (6a) of the root of each fin (6) and is set to be 2.0 times the reference diameter (Ds), and a circle (C4) centered on the rotation center of the propeller and having a diameter (D4) which is defined at the rearmost position (Xe) of the fin (6) and is set to be 1.5 times the reference diameter (Ds).
Description
Technical field
The present invention relates to a kind of propelling unit of the boats and ships that use screw propeller and boats and ships with this propelling unit, more specifically, thus relating to a kind of fin that is provided with on the propeller boss cap that is installed on the propeller boss of screw propeller improves the propelling unit of boats and ships of propulsion quality of screw propeller and the boats and ships with this propelling unit.
Background technology
Boats and ships use screw propeller as its propelling unit mostly, and the raising of the propeller characteristic of its propeller efficiency etc. can be made huge contribution at the raising of bunkerage.Therefore, carry out the research about the wing of screw propeller of the shape, developed area, pitch angle, skew angle etc. of wing number, the wing of screw propeller, developed various wing shapes.
For example, as putting down in writing in the special fair 7-121716 communique of Japan, in order to improve this propeller characteristic, developed the propeller boss cap 5 of band rectification fin such shown in Figure 15～18, it is near screw propeller propeller boss 2, thereby propeller efficiency is improved in the hub whirlpool in the wake flow of minimizing prop shaft hub cap 5.
In the propeller boss cap 5 of this band rectification fin, the number (being 4 in Figure 15) that order is installed in the fin 6 on the propeller boss cap 5 equates with the number (being 4 in Figure 15) of each propeller blade (spiral paddle) 3.In addition, as shown in figure 18, the angle [alpha] of fin 6 has the relation of (20 °≤α-ε≤+ 30 °) with respect to the geometric pitch angle ε of the root of propeller blade 3.About the length direction of fin 6, the leading edge of fin 6 equates on the screw propeller fore-and-aft direction with the trailing edge of the root of propeller blade 3, perhaps leans on rear (b 〉=0) than this trailing edge.In addition, be arranged on the position (a＞0) in gap of root of the propeller blade 3 of adjacency.And then as Figure 16 and shown in Figure 17, the maximum gauge (2r) from the axis of cap 5 bodies of fin 6 is bigger than the diameter Dba of the cap mounting end 2a of propeller boss 2, and is below 33% of diameter of propeller (2R).
The action effect of the propeller boss cap 5 of this band rectification fin is as follows.Self does not produce thrust the rectification fin, plays the effect of current plate of the generation in the hub whirlpool in the wake flow that reduces hub cap.Utilize this valve action, the guiding resistance that causes because of vortex on the screw propeller aerofoil is reduced in the hub whirlpool of propeller boss cap wake flow by diffusion.Its result can not increase moment of torsion, can improve propeller characteristic (propeller efficiency) significantly.
In addition, for example as No. 3491890 communique of Japanese Patent put down in writing, proposition has following proposal: the screw propeller of the boats and ships of the hub whirlpool cancellation element of eliminating vortex from the screw propeller wheel hub with this rectification fin etc., improve the whole efficiency of screw propeller to make hub whirlpool cancellation element bring into play its effect fully and be purpose, make the pitch or the camber of pars intermedia of the pitch of wing root portion of screw propeller or camber ratio screw propeller big also having profitability aspect the intensity.
In addition, as for example Japan real open put down in writing in the real fair 7-34795 communique of flat 5-7599 communique and Japan, proposition has following finned screw propeller propeller boss: on the propeller boss cap fin is not set, downstream at the propeller blade of screw propeller propeller boss, on lateral circle surface, a plurality of rectification fins identical with the blade number are set except the shaft hub of propeller boss cap.
On the other hand, can the present inventor consider and further to improve angle of rake efficient by the shape of the fin of the propelling unit of the boats and ships of the propeller boss cap that uses band rectification fin, carried out having used the flume experiment based on the shape of the fin of various imaginations.Its result has obtained improving the propelling unit of boats and ships of the use screw propeller propelling unit effect, following and the boats and ships with this propelling unit.
Patent document 1: the special fair 7-121716 communique of Japan
Patent document 2: No. 3491890 communique of Japanese Patent
Patent document 3: Japan opens flat 5-7599 communique in fact
Patent document 4: the real fair 7-34795 communique of Japan.
Summary of the invention
The objective of the invention is to, in the propelling unit of the boats and ships that form by the screw propeller that uses finned prop shaft hub cap and have in the boats and ships of this propelling unit, provide a kind of marine propulsion of prop shaft hub cap of fin of and the fin shape of using the band prior art to compare, workability height and realized the propelling unit of weight-saving boats and ships and boats and ships with this propelling unit with boats and ships with this marine propulsion.
To achieve these goals, the propelling unit of boats and ships is, on the prop shaft hub cap of the rear side of the screw propeller propeller boss that is installed on screw propeller, fin is set, and this fin is configured in rear between the spiral paddle, wherein, leading section diameter with above-mentioned prop shaft hub cap is a datum diameter, make above-mentioned fin latter half be shaped as be accommodated in following circle as the bottom the inside of the frustum of a cone, described circle is: the middle position in the front-end and back-end of the root of above-mentioned fin, diameter is 2.0 times of said reference diameter, more preferably 1.8 times, and with the screw propeller centre of gration is the circle at center, with rearmost end position at above-mentioned fin, diameter is 1.5 times of said reference diameter, more preferably 1.3 times, and be the circle at center with the screw propeller centre of gration.
In addition, should " at middle position " be meant " comprising this middle position, and in the plane of the fin vertical with the line segment of the rear end of the front end of the root that links fin and root ".In addition, " end position in the end " is meant " comprising this rearmost end position, and in the plane of the fin vertical with the line segment of the rear end of the front end of the root that links fin and root ".
Perhaps, the propelling unit of boats and ships to achieve these goals is in the propelling unit of above-mentioned boats and ships, replacement is provided with above-mentioned fin on above-mentioned prop shaft hub cap, and above-mentioned fin is set, and make that the said reference diameter is the diameter of root of rear end of the spiral paddle of above-mentioned screw propeller propeller boss at the part place, rear of the spiral paddle of the screw propeller propeller boss of screw propeller.
In addition, in the propelling unit of above-mentioned boats and ships, the shape of the first half of above-mentioned fin is formed: the distance of the direction of the front-end and back-end of order from the front end of the root of above-mentioned fin to foremost binding root is 0.0 times～0.3 times of said reference diameter, the circle diameter of the outermost part of order by above-mentioned fin is 1.0 times～2.5 times of said reference diameter, more preferably 1.0 times～2.3 times, order is 1.0 times～2.0 times of said reference diameter at the above-mentioned central position of the above-mentioned fin circle diameter by the outermost part of above-mentioned fin, more preferably 1.0 times～1.8 times.
The first half of the fin of above-mentioned prior art and latter half form the roughly shape of symmetry with respect to central authorities.But, owing to also locating fluid contracted flow hastily by the rear than spiral paddle, so as described above when the shape that the latter half of fin cuts for the trailing edge side with fin, can in the fin effect of keeping for the contracted flow of rear propeller, reduce the resistance of fin.Therefore, compare with the fin shape of prior art, work becomes easily and can reduce manufacturing cost, in addition, can realize lightweight.And, have the effect that improves propeller efficiency.These situations are understood by flume experiment etc., so form this shape.And then, utilizing numerical value fluid mechanics to calculate (CFD(Computational Fluid Dynamics) calculates), analyze the result of the fluid of fin surface, the periphery trailing edge side of fin becomes resistance, can improve propeller efficiency as if this part is cut then as can be known.
In addition, boats and ships to achieve these goals have the propelling unit ground formation of above-mentioned boats and ships.Thus, compare, a kind of workability raising can be provided and realize that weight-saving has the boats and ships of the propelling unit of boats and ships with the boats and ships of marine propulsion with fin shape of using the fin of being with prior art.
Propelling unit according to boats and ships of the present invention, in the propelling unit that forms by the screw propeller that uses finned prop shaft hub cap, by making the shape that in latter half, the trailing edge side is cut that is shaped as of fin, can when keeping, reduce the resistance of fin, increase propeller efficiency for the fin effect of the contracted flow of rear propeller.And fin of the present invention is compared with the fin of prior art and is diminished, so the work of fin becomes easily and correspondingly can realize lightweight with diminishing.
In addition,, can use the propelling unit of the high boats and ships of propeller efficiency, so can improve propulsion coefficient according to the boats and ships of propelling unit with boats and ships of the present invention.Time of navigation more than ten several years and will consume in the boats and ships of a large amount of fuel, if this propeller efficiency improves a little, the fuel more than just can saving very.In addition, because propelling unit can realize lightweight a little, correspondingly, can make the supporting construction lightweight of cardan shaft and cardan shaft.
Description of drawings
Fig. 1 is the figure that the rear from boats and ships of formation of propelling unit of the boats and ships of expression embodiments of the present invention is seen.
Fig. 2 is the lateral plan of propelling unit of the boats and ships of Fig. 1.
Fig. 3 is the lateral plan of prop shaft hub cap.
Fig. 4 is the figure of scope of the profile of expression fin.
Fig. 5 is the figure of first shape of fin of propelling unit of the boats and ships of expression embodiments of the present invention.
Fig. 6 is the figure that expression makes the shape of the prop shaft hub cap of Fig. 5 and the fin of fin when the screw propeller S. A. rotates.
Fig. 7 is the figure of second shape of fin of propelling unit of the boats and ships of expression embodiments of the present invention.
Fig. 8 is the figure that expression makes the shape of the prop shaft hub cap of Fig. 7 and the fin of fin when the screw propeller S. A. rotates.
Fig. 9 is the figure of the 3rd shape of fin of propelling unit of the boats and ships of expression embodiments of the present invention.
Figure 10 is the figure that expression makes the shape of the prop shaft hub cap of Fig. 9 and the fin of fin when the screw propeller S. A. rotates.
Figure 11 is the figure of the 4th shape of fin of propelling unit of the boats and ships of expression embodiments of the present invention.
Figure 12 is the figure that expression makes the shape of the prop shaft hub cap of Figure 11 and the fin of fin when the screw propeller S. A. rotates.
Figure 13 is the figure of the 5th shape of fin of propelling unit of the boats and ships of expression embodiments of the present invention.
Figure 14 is the figure that expression makes the shape of the prop shaft hub cap of Figure 13 and the fin of fin when the screw propeller S. A. rotates.
Figure 15 is the figure that the rear from boats and ships of formation of propelling unit of the boats and ships of expression prior art is seen.
Figure 16 is the lateral plan of propelling unit of the boats and ships of Figure 15.
Figure 17 is the lateral plan of shape of the prop shaft hub cap of expression prior art.
Figure 18 is the lateral plan that the position of spiral paddle and the fin of expression prior art concerns.
Figure 19 is the lateral plan of the setting angle of expression fin.
Figure 20 is the A-A section drawing of the Figure 19 that sees from the rear at the inclination angle of expression fin.
The specific embodiment
Below, with reference to the propelling unit of description of drawings boats and ships of the present invention and have the embodiment of the boats and ships of this propelling unit.At this, describe with the example that will be configured on the prop shaft hub cap, but the present invention also can be applied to fin is arranged on situation on the rear part of spiral paddle of screw propeller propeller boss at the fin of the rear of spiral paddle configuration.Under this is arranged on situation on the rear part of spiral paddle, make that datum diameter is the diameter of root of rear end of the spiral paddle of screw propeller propeller boss.
In addition, Fig. 1～Figure 20 changes the shape of screw propeller propeller boss, spiral paddle, prop shaft hub cap, fin etc. and size and represents for easy to understand, and these shapes and size are with actual different.In addition, in Fig. 3～Figure 14, Figure 15～Figure 20,, omit obvious spiral paddle and fin according to the situation of mapping and explanation in order to be easy to observe.
As Fig. 1～shown in Figure 14, the propelling unit 1A of the boats and ships of embodiments of the present invention, 1B, 1C, 1D, 1E(be hereinafter referred to as 1A～1E) be made of screw propeller, described screw propeller have screw propeller propeller boss (screw propeller wheel hub) 2 and be installed in spiral paddle 3 on this screw propeller propeller boss 2, with rear end bonded assembly prop shaft hub cap (propeller hubcap) 5A of screw propeller propeller boss 2 be arranged on fin 6A, 6B on this prop shaft hub cap 5A, 6C, 6D, 6E(hereinafter referred to as 6A～6E).
Prop shaft hub cap 5A is formed by the swivel that with screw propeller S. A. Pc is S. A., and the rearward end 5a of this prop shaft hub cap 5A is formed by end face.This swivel is that the bus of rotation is formed by level and smooth curve or straight line, and forms with the shape that attenuates towards the tip, rear.
At this, making the leading section diameter Dcf of prop shaft hub cap 5A is datum diameter Ds.And the total length Lc that preferably makes this prop shaft hub cap 5A is 0.28 times～0.76 times of datum diameter Ds.In addition, make preferably that the diameter Dca of the rearward end 5a of this prop shaft hub cap 5A is 0.35 times～0.95 times of datum diameter Ds.In addition, the diameter Dcf of this leading section 5f is equivalent to the lip diameter of prop shaft hub cap 5A.
As shown in Figure 3, when the bus of swivel that forms the outer peripheral face 5b of prop shaft hub cap 5A in order was straight line, prop shaft hub cap 5A was shaped as the frustum of a cone, made to be very easy to.In addition, though it is not shown, when the bus that makes swivel is level and smooth curve, for from the place ahead towards the rear the most advanced and sophisticated smoothly shape that attenuates, preferably make being shaped as of rearward end of prop shaft hub cap 5A, in cross section perpendicular to screw propeller S. A. Pc, with the deviation of the shape of the frustum of a cone the total length Lc of prop shaft hub cap 5A 20% in.
In addition, the end face of the front end face 5f of prop shaft hub cap 5A is from the relation that engages with the aft end face 2a of screw propeller propeller boss 2 and form aspect.On the other hand, the end face of the rearward end 5a of prop shaft hub cap 5A as shown in Figure 3, the viewpoint from work is preferably formed by the plane, but also can be by forming near the circular cone on plane or swivel etc.In this case, rearward end 5a is shaped as, and the distance of the fore-and-aft direction of circumferential part and central part is accommodated in 20% the scope of total length Lc of prop shaft hub cap 5A.
Fin 6A～6E is arranged on the prop shaft hub cap 5A of rear side of the screw propeller propeller boss 2 that is installed on screw propeller 1A～1E, and this fin 6A～6E is configured in the rear between the spiral paddle 3.That is, when the rear of prop shaft Pc is seen, the front end 6f of the root of fin 6A～6E be configured in spiral paddle 3 root the rear end each other.In addition, when seeing from the side, the front end 6f of the root of fin 6A～6E is configured in than the rear end of the root of spiral paddle 3 and leans on the rear.This fin 6A～6E can have positive and negative camber ground and form, but the simplicity from the work and the reduction aspect of cost of manufacture consider, is suitably writing board shape.In addition, this fin 6A～6E also can have positive and negative ground, inclination angle installation.
And in the present invention, as Fig. 4 and Fig. 5 of seeing from the side of hull and make prop shaft hub cap 5A and fin 6A～6E shown in Figure 6 when the screw propeller S. A. rotates, the shape of this fin 6A～6E is as follows.In addition, in Fig. 4,, represent the symmetrical shape in roughly front and back of the fin 6 of prior art with fine rule for the fin 6A～6E with embodiment compares.In a word, in the present invention, fin 6A as shown in Figure 4 etc. are such, the fin area (oblique line part) of the latter half of the fin 6 of minimizing prior art.
Shape about the first half of fin 6A～6E, as Fig. 6～shown in Figure 14, the direction that promptly links the line segment of the front end 6f of root of fin 6A～6E and rear end 6a about the length direction of fin 6A～6E, making the front end 6f of the root of fin 6A～6E is datum diameter Ds(=Dcf to the distance L f foremost of fin 6A～6E) 0.0 times～0.3 times.That is, making the maxim Lfmax of this distance L f is 0.3 * Ds.
In addition, short transverse (perpendicular to the direction of screw propeller S. A. Pc) about fin 6A～6E, as shown in Figure 6, the diameter D1 of the first circle C1 of the outermost part of order by fin 6A～6E is 1.0 times～2.5 times of datum diameter Ds, more preferably 1.0 times～2.3 times, at the front end 6f of the root of fin 6A～6E and the middle position Xm place of rear end 6a, the diameter D2 of the second circle C2 of the outermost part by fin 6A～6E is 1.0 times～2.0 times of datum diameter Ds, more preferably 1.0 times～1.8 times.
In addition, shape about the latter half of fin 6A～6E, as Fig. 5 and shown in Figure 6, form that to be accommodated in following the 3rd circle C3 and the 4th circle C4 be in the inside of the frustum of a cone of bottom: the 3rd justifies C3 is, middle position Xm place at the rear end 6a of the front end 6f of the root of fin 6A～6E and root, diameter D3 is 2.0 times of datum diameter Ds, more preferably 1.8 times, the 4th circle C4 is, Xe place, rearmost end position at fin 6A～6E, diameter D4 is 1.5 times of datum diameter Ds, more preferably 1.3 times.
In addition, should " middle position Xm place " be meant " comprise this middle position Xm, and the plane Nei Chu of the fin vertical with the line segment of the rear end 6a of the front end 6f of the root of binding fin 6A～6E and root ".In addition, " Xe place, rearmost end position " is meant " comprise this rearmost end position Xe, and the plane Nei Chu of the fin vertical with the line segment of the rear end 6a of the front end 6f of the root that links fin 6A～6E and root ".
Length about fin 6A～6E, owing to the front end 6f and the rear end 6a of the root of fin 6A～6E need be configured among the prop shaft hub cap 5A, so from the relation of fin 6A～6E with respect to the setting angle of the rotation centerline of prop shaft hub cap 5A, nature can be restricted.For example, the trailing edge of the root of the leading edge of fin 6A～6E and spiral paddle 3 equates on the fore-and-aft direction of screw propeller 2 or also leans on the rear than this trailing edge.
In addition, same as the prior art about the setting angle α of fin 6A～6E as shown in figure 18, the mode that has the relation of (20 °≤α-ε≤+ 30 °) with the geometric pitch angle ε with respect to the root of spiral paddle 3 is installed.In addition, fin 6A～6E is arranged on the position in gap of root of the spiral paddle 3 of adjacency.As the setting angle of fin 6A～6E, identical with the finned prop shaft hub cap 5 of prior art, Figure 19 and tilt angle gamma as shown in Figure 20 also can be set.Figure 20 represent the tilt angle gamma of fin 6A～6E be the 0 ground situation of installing and with positive angle (+γ) or the negative angle (γ) situation of An Zhuaning.
The form range that is subjected to this fin 6A～6E of above-mentioned qualification is, the latter half of fin 6A～6E is the shape that is accommodated in the oblique line part of Fig. 5～shown in Figure 14.
Fig. 5 and fin 6A shown in Figure 6 have following characteristics: overhang Lf foremost is bigger than zero, and the position Xs of front end stretches out a little forward than the front end 6f of root, and in addition, the position Xe of rearmost end is identical with the rear end 6a of root.Fig. 5 is a scheme drawing of seeing fin 6A from the side surface direction of hull, and Fig. 6 represents to make prop shaft hub cap 5A and the fin 6A signal transverse projection figure when the screw propeller S. A. rotates.Line Lxm is illustrated in the front end 6f of root of fin 6A and the middle position Xm place of rear end 6a, the line in the fin plane vertical with the line of root.
Fig. 7 and fin 6B shown in Figure 8 have following characteristics: outermost part is compared with the front end 6f of root and is forwards stretched out quite a lot ofly, and in addition, the position Xe of rearmost end is identical with the rear end 6a of root.Fig. 7 is a scheme drawing of seeing fin 6B from the side surface direction of hull, and Fig. 8 represents to make prop shaft hub cap 5A and the fin 6B signal transverse projection figure when the screw propeller S. A. rotates.
Fig. 9 and fin 6C shown in Figure 10 have following characteristics: the outermost part is compared forwards with the front end 6f of root and is stretched out a little, and in addition, the position Xe of rearmost end leans on rear side than the rear end 6a of root.Fig. 9 is a scheme drawing of seeing fin 6C from the side surface direction of hull, and Figure 10 represents to make prop shaft hub cap 5A and the fin 6C signal transverse projection figure when the screw propeller S. A. rotates.
Figure 11 and fin 6D shown in Figure 12 have following characteristics: overhang Lf foremost is zero, and the position Xs of front end and the front end 6f of root are same position, and in addition, the position Xe of rearmost end leans on rear side than the rear end 6a of root.Figure 11 is a scheme drawing of seeing fin 6D from the side surface direction of hull, and Figure 12 represents to make prop shaft hub cap 5A and the fin 6D signal transverse projection figure when the screw propeller S. A. rotates.
Figure 13 and fin 6E shown in Figure 14 have following characteristics: overhang Lf foremost is zero, and the position Xs of front end and the front end 6f of root are same position, and in addition, the overhang Le of rearmost end is zero, and the position Xe of rear end is identical with the rear end 6a of root.Figure 13 is a scheme drawing of seeing fin 6E from the side surface direction of hull, and Figure 14 represents to make prop shaft hub cap 5A and the fin 6E signal transverse projection figure when the screw propeller S. A. rotates.
In addition, about the thickness direction of fin 6A～6E, for flat board and thickness all work for the moment go up easily, but for even a bit will improve performance the time, make that fin 6A～6E is wing shape.In addition, also plate bending can be provided with camber, or be wing shape and camber is set, when this camber is set, the relation of the shape of consideration and prop shaft hub cap 5, at the root place of fin 6A～6E, preferably camber is set to the direction opposite with the camber of spiral paddle 3, make it produce the rightabout moment of torsion Qf of moment of torsion Qp that produces with spiral paddle 3.
Propelling unit 1A～1E according to above-mentioned boats and ships, by making the shape that in latter half, the trailing edge side is cut that is shaped as of fin 6A～6E, can keep fin effect, and can reduce the resistance of fin 6A～6E and increase propeller efficiency for the contracted flow of rear propeller.And fin 6A～6E compares with the fin of prior art and diminishes, so the work of fin 6A～6E becomes easily, in addition, and diminishes correspondingly, can realize lightweight.
In addition, the present invention also can be applied to fin is arranged on the situation of rear part of the spiral paddle of screw propeller propeller boss.Under situation about being arranged on this spiral paddle rear part, make that datum diameter is the diameter of root of rear end of the spiral paddle of screw propeller propeller boss.When being installed in fin 6A～6E on the propeller boss cap 5, because cap is arranged on the physical property restriction at the rear of screw propeller, the leading edge of fin 6 equates on the screw propeller fore-and-aft direction with the trailing edge of the root of propeller blade 3 or also leans on rear (b 〉=0) than this trailing edge, but when the rear of the spiral paddle 3 that fin 6 is arranged on screw propeller propeller boss 2, the front end of fin 6 also can be configured between the spiral paddle.At this moment, b also can be negative value, is preferably-0.5 * Dcf＜b＜0 get final product.Thus, seldom still can shorten the length of screw propeller propeller boss, can realize lightweight.
Boats and ships with propelling unit of boats and ships of the present invention have the propelling unit 1A of above-mentioned boats and ships～1E ground and constitute.According to these boats and ships, owing to use the propelling unit 1A～1E of above-mentioned boats and ships, so can improve propulsion coefficient.In addition, though realized lightweight because propelling unit 1A～1E is less, so correspondingly can make the supporting construction lightweight of cardan shaft and cardan shaft.
Utilize possibility on the industry
In the propulsion plant of boats and ships of the present invention, by making the shape that in latter half, the trailing edge side is cut that is shaped as of fin, can when keeping for the fin effect of the contracted flow of rear propeller, reduce the resistance of fin, increase propeller efficiency, and compare with the fin of prior art and to diminish, thus the work of fin become easily, in addition, with diminish to should be able to realizing lightweight, so can be as the propulsion plant of boats and ships.
In addition, boats and ships with propulsion plant of boats and ships of the present invention can be realized the raising of propulsive efficiency and the fuel savings expense, and can realize the lightweight based on the supporting construction of the light-weighted cardan shaft of propulsion plant and cardan shaft, so can be used in numerous boats and ships.
Description of reference numerals
1, the propeller of 1A, 1B, 1C, 1D, 1E boats and ships
2 screw propeller boss
The rear end face of 2a screw propeller boss
3 spiral paddles
4 screw rotating shafts
5,5A propeller shaft hub cap
The rearward end of 5a propeller shaft hub cap
The outer peripheral face of 5b propeller shaft hub cap
The leading section of 5f propeller shaft hub cap
6,6A, 6B, 6C, 6D, 6E fin
The rear end of the root of 6a fin
The front end of the root of 6f fin
The direction of rotation distance of a fin front end and propeller blade
The screw fore-and-aft direction distance of b propeller blade rear end and fin front end
C1 first circle
C2 second circle
C3 the 3rd circle
C4 the 4th circle
The diameter of the rearward end of Dca propeller shaft hub cap
The diameter of the leading section of Dcf propeller shaft hub cap
The Dp diameter of propeller
The Ds datum diameter
D1 first circle diameter
D2 second circle diameter
D3 the 3rd circle diameter
D4 the 4th circle diameter
The length of Lc prop shaft hub cap
The horizontal throw that hold to the end the rear end from the fin root in the Le fin profile
In the Lf fin profile from the front end of fin root to foremost horizontal throw
The maxim of Lfmax Lf
Line in the plane of the fin that the front end of Lxm fin root and the central position of rear end are vertical with the line of root
The position foremost of Xs fin
The front end of the root of Xm fin and the middle position of rear end
The position of the rearmost end of Xe fin
The setting angle of α fin
The geom pitch angle of the root of ε propeller blade
The mounted angle of γ fin
Claims (4)
1. the propelling unit of boats and ships is provided with fin on the prop shaft hub cap of the rear side of the screw propeller propeller boss that is installed on screw propeller, and this fin is configured in rear between the spiral paddle, wherein,
Leading section diameter with above-mentioned prop shaft hub cap is a datum diameter,
Make being shaped as of latter half of above-mentioned fin be accommodated in the inside of following circle as the frustum of a cone of bottom, described circle is: the central position diameter in the front-end and back-end of the root of above-mentioned fin is 2.0 times of the said reference diameter and is the circle at center and is 1.5 times of the said reference diameter and is the circle at center with the screw propeller centre of gration at the rearmost end position of above-mentioned fin diameter with the screw propeller centre of gration.
2. the propelling unit of boats and ships as claimed in claim 1 is characterized in that,
Replacement is provided with above-mentioned fin on above-mentioned prop shaft hub cap, and at the part place, rear of the spiral paddle of the screw propeller propeller boss of screw propeller above-mentioned fin is set, and makes that the said reference diameter is the diameter of root of rear end of the spiral paddle of above-mentioned screw propeller propeller boss.
3. the propelling unit of boats and ships as claimed in claim 1 is characterized in that,
The shape of the first half of above-mentioned fin is formed:
The distance of the direction of the front-end and back-end of order from the front end of the root of above-mentioned fin to foremost binding root is 0.0 times～0.3 times of said reference diameter,
The circle diameter of the outermost part of order by above-mentioned fin is 1.0 times～2.5 times of said reference diameter,
Order is 1.0 times～2.0 times of said reference diameter at the above-mentioned central position of the above-mentioned fin circle diameter by the outermost part of above-mentioned fin.
4. boats and ships is characterized in that having claim 1, the propelling unit of 2 or 3 described boats and ships.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009082713A JP5405872B2 (en) | 2009-03-30 | 2009-03-30 | Ship propulsion device and ship equipped with the same |
| JP2009-082713 | 2009-03-30 | ||
| PCT/JP2010/050561 WO2010116770A1 (en) | 2009-03-30 | 2010-01-19 | Ship propulsion device and ship with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102159453A true CN102159453A (en) | 2011-08-17 |
| CN102159453B CN102159453B (en) | 2014-11-12 |
Family
ID=42936059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201080002610.5A Active CN102159453B (en) | 2009-03-30 | 2010-01-19 | Ship propulsion device and ship with same |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP5405872B2 (en) |
| KR (1) | KR101506911B1 (en) |
| CN (1) | CN102159453B (en) |
| GB (1) | GB2474818B (en) |
| WO (1) | WO2010116770A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103342161A (en) * | 2013-07-29 | 2013-10-09 | 褚智堂 | High-speed propeller |
| CN103857589A (en) * | 2012-09-13 | 2014-06-11 | 现代重工业株式会社 | Propeller boss cap comprising fins |
| CN104812665A (en) * | 2012-11-02 | 2015-07-29 | 株式会社三井造船昭岛研究所 | Ship propulsion device and ship provided with same |
| CN105644749A (en) * | 2016-01-06 | 2016-06-08 | 浙江海洋学院 | Ship propulsion mechanism |
| CN105644748A (en) * | 2016-01-06 | 2016-06-08 | 浙江海洋学院 | Propeller hub cap of propeller |
| CN107310704A (en) * | 2017-07-17 | 2017-11-03 | 胡斌 | A kind of propelling screws and high speed operation are difficult the pneumatic ship of rollover |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101245738B1 (en) * | 2010-11-09 | 2013-03-25 | 삼성중공업 주식회사 | Propeller structure and ship including the same |
| KR101313183B1 (en) * | 2010-11-17 | 2013-09-30 | 삼성중공업 주식회사 | Propeller boss cap and Propulsion apparatus having the same |
| KR101381437B1 (en) * | 2012-09-13 | 2014-04-10 | 현대중공업 주식회사 | Propeller |
| KR101523920B1 (en) * | 2013-09-27 | 2015-06-01 | 삼성중공업 주식회사 | Propulsion apparatus for vessel |
| KR101589124B1 (en) * | 2014-02-07 | 2016-01-27 | 삼성중공업 주식회사 | Propulsion apparatus of vessel |
| US10040528B2 (en) | 2013-02-08 | 2018-08-07 | Samsung Heavy Ind. Co., Ltd. | Propulsion device for ship |
| KR101913379B1 (en) * | 2014-04-08 | 2018-10-30 | 주식회사 신라금속 | Boss Cap having Asymmetry Type Fin and Propulsion Apparatus for Ship |
| JP6812057B2 (en) * | 2017-06-21 | 2021-01-13 | ナカシマプロペラ株式会社 | Propulsion device for ships and ships equipped with it |
| KR102219050B1 (en) | 2019-10-25 | 2021-02-22 | 한국조선해양 주식회사 | Propeller boss cap and ship with the same |
| US11713101B2 (en) | 2020-12-04 | 2023-08-01 | Jeffrey L. HATHAWAY | Propeller hubcap |
| JP7518942B1 (en) | 2023-03-29 | 2024-07-18 | ナカシマプロペラ株式会社 | Marine propulsion device and marine vessel equipped with same |
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| JPH07121716B2 (en) * | 1986-07-16 | 1995-12-25 | 大阪商船三井船舶株式会社 | Propeller boss cap with fins |
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| JP3509903B2 (en) * | 1993-09-22 | 2004-03-22 | ジャパン・ハムワージ株式会社 | Ship propulsion device |
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2010
- 2010-01-19 CN CN201080002610.5A patent/CN102159453B/en active Active
- 2010-01-19 WO PCT/JP2010/050561 patent/WO2010116770A1/en active Application Filing
- 2010-01-19 KR KR1020117004022A patent/KR101506911B1/en active IP Right Grant
- 2010-01-19 GB GB1103966.6A patent/GB2474818B/en active Active
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| JPS5311490A (en) * | 1976-07-20 | 1978-02-01 | Fumio Henmi | Screw propeller |
| CN1031975A (en) * | 1987-09-14 | 1989-03-29 | 大阪商船三井船舶株式会社 | The propeller hub lid of band fin keel |
| JPH057599U (en) * | 1988-01-14 | 1993-02-02 | 株式会社西日本流体技研 | Propeller Boss with fins |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103857589A (en) * | 2012-09-13 | 2014-06-11 | 现代重工业株式会社 | Propeller boss cap comprising fins |
| CN104812665A (en) * | 2012-11-02 | 2015-07-29 | 株式会社三井造船昭岛研究所 | Ship propulsion device and ship provided with same |
| CN104812665B (en) * | 2012-11-02 | 2017-03-22 | 株式会社三井造船昭岛研究所 | Ship propulsion device and ship provided with same |
| CN103342161A (en) * | 2013-07-29 | 2013-10-09 | 褚智堂 | High-speed propeller |
| CN105644749A (en) * | 2016-01-06 | 2016-06-08 | 浙江海洋学院 | Ship propulsion mechanism |
| CN105644748A (en) * | 2016-01-06 | 2016-06-08 | 浙江海洋学院 | Propeller hub cap of propeller |
| CN107310704A (en) * | 2017-07-17 | 2017-11-03 | 胡斌 | A kind of propelling screws and high speed operation are difficult the pneumatic ship of rollover |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20110132310A (en) | 2011-12-07 |
| CN102159453B (en) | 2014-11-12 |
| GB2474818B (en) | 2013-01-30 |
| KR101506911B1 (en) | 2015-03-30 |
| JP5405872B2 (en) | 2014-02-05 |
| GB201103966D0 (en) | 2011-04-20 |
| JP2010234861A (en) | 2010-10-21 |
| GB2474818A (en) | 2011-04-27 |
| WO2010116770A1 (en) | 2010-10-14 |
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