CN102159453B - Ship propulsion device and ship with same - Google Patents
Ship propulsion device and ship with same Download PDFInfo
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- CN102159453B CN102159453B CN201080002610.5A CN201080002610A CN102159453B CN 102159453 B CN102159453 B CN 102159453B CN 201080002610 A CN201080002610 A CN 201080002610A CN 102159453 B CN102159453 B CN 102159453B
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- 230000000694 effects Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
Classifications
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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
-
- 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 there are the boats and ships of this propelling unit, more specifically, thus relate on a kind of propeller boss cap on the propeller boss that is arranged on screw propeller, arrange fin improve the propulsion quality of screw propeller boats and ships propelling unit and there are the boats and ships of 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 for the raising of bunkerage.Therefore, carry out the research of the wing about screw propeller of shape, developed area, pitch angle, skew angle of wing number, the wing of screw propeller etc., developed various wing shapes.
For example, as recorded in Japanese Patent Publication 7-121716 communique, in order to improve this propeller characteristic, develop the propeller boss cap 5 with rectification fin as shown in Figure 15～18, it is near of 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 this propeller boss cap 5 with rectification fin, order is arranged on the number (being 4 in Figure 15) of the fin 6 on propeller boss cap 5 and the number (being 4 in Figure 15) of each propeller blade (spiral paddle) 3 equates.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 screw propeller fore-and-aft direction with the trailing edge of the root of propeller blade 3, or leans on rear (b >=0) than this trailing edge.In addition be arranged on, the position (a > 0) in the gap of the root of the propeller blade 3 of adjacency.And then as shown in Figure 16 and Figure 17, the maximum gauge (2r) of the axis from cap 5 bodies of fin 6 is larger 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 this propeller boss cap 5 with rectification fin is as follows.Self does not produce thrust rectification fin, plays the effect of the current plate of the generation in the hub whirlpool in the wake flow that reduces hub cap.Utilize this valve action, the hub whirlpool of propeller boss cap wake flow is diffused and reduces the guiding resistance causing because of vortex on screw propeller aerofoil.Its result, can not increase moment of torsion, can improve significantly propeller characteristic (propeller efficiency).
In addition, for example, as recorded in No. 3491890 communique of Japanese Patent, proposition has following proposal: having the eliminating from screw propeller wheel hub the screw propeller of boats and ships of the hub whirlpool cancellation element of vortex of this rectification fin etc., to make hub whirlpool cancellation element bring into play fully its effect and improve the whole efficiency of screw propeller and also there is profitability aspect intensity as object, make the pitch of wing root portion of screw propeller or pitch or the camber of the pars intermedia of camber ratio screw propeller large.
In addition, as for example recorded in Japanese Patent Publication 5-7599 communique and Japanese Patent Publication 7-34795 communique, proposition has following finned screw propeller propeller boss: on propeller boss cap, fin is not set, in the downstream of the propeller blade of screw propeller propeller boss, on the lateral circle surface of the shaft hub except propeller boss cap, the multiple rectification fins identical with blade number are set.
On the other hand, present inventor consider can be by use the fin of the propelling unit of the boats and ships of the propeller boss cap with rectification fin shape and further improve angle of rake efficiency, carried out the flume experiment of the shape that has used the fin based on various imaginations.Its result, has obtained the propelling unit of the boats and ships that can improve use screw propeller propelling unit effect, following and has had the boats and ships of this propelling unit.
Patent document 1: Japanese Patent Publication 7-121716 communique
Patent document 2: No. 3491890 communique of Japanese Patent
Patent document 3: Japanese Patent Publication 5-7599 communique
Patent document 4: Japanese Patent Publication 7-34795 communique.
Summary of the invention
The object of the invention is to, in the propelling unit of the boats and ships by using the screw propeller of finned prop shaft hub cap to form 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 use with prior art to compare with the boats and ships with this marine propulsion, workability is high and realized the propelling unit of weight-saving boats and ships and had the boats and ships of this propelling unit.
To achieve these goals, the propelling unit of boats and ships is, on the prop shaft hub cap of rear side of screw propeller propeller boss that is installed on screw propeller, fin is set, and this fin is configured in to the rear between spiral paddle, wherein, taking the leading section diameter of above-mentioned prop shaft hub cap as datum diameter, make above-mentioned fin latter half be shaped as be accommodated in using following circle as bottom the inside of the frustum of a cone, described circle is: at the middle position of 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 the circle centered by screw propeller centre of gration, with the rearmost end position at above-mentioned fin, diameter is 1.5 times of said reference diameter, more preferably 1.3 times, and the circle centered by screw propeller centre of gration.
In addition, should " at middle position " refer to " comprising this middle position, and in the plane of the fin vertical with linking the front end of root of fin and the line segment of the rear end of root ".In addition, " in the end end position " refers to " comprising this rearmost end position, and with link in the plane of the front end of root of fin and the vertical fin of the line segment of the rear end of root ".
Or, the propelling unit of boats and ships is to achieve these goals in the propelling unit of above-mentioned boats and ships, replace, on above-mentioned prop shaft hub cap, above-mentioned fin is set, 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 to make said reference diameter be the diameter of the root of the rear end of the spiral paddle of above-mentioned screw propeller propeller boss.
In addition, in the propelling unit of above-mentioned boats and ships, the shape of the first half of above-mentioned fin is formed as: order is 0.0 times～0.3 times of said reference diameter to the distance of the direction of the front-end and back-end of link root foremost from the front end of the root of above-mentioned fin, order is 1.0 times～2.5 times of said reference diameter by the circle diameter of the outermost part of above-mentioned fin, more preferably 1.0 times～2.3 times, order is 1.0 times～2.0 times of said reference diameter by the circle diameter of the outermost part of above-mentioned fin in the above-mentioned central position 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 are formed as roughly symmetrical shape with respect to central authorities.But, owing to also leaning on rear place fluid contracted flow hastily than spiral paddle, so when the latter half at fin is as described above the shape that the trailing edge side of fin is cut, can reduce the resistance of fin in the fin effect maintaining for the contracted flow of rear propeller.Therefore,, compared with the fin shape of prior art, work becomes easily and can reduce manufacturing cost, in addition, can realize lightweight.And, there is the effect that improves propeller efficiency.These situations are understood by flume experiment etc., so be formed as this shape.And then, utilizing numerical value fluid mechanics to calculate (CFD(Computational Fluid Dynamics) calculates), the result of analyzing the fluid of fin surface, the periphery trailing edge side of fin becomes resistance, if known, this part is cut and can improve propeller efficiency.
In addition, boats and ships to achieve these goals have above-mentioned boats and ships propelling unit form.Thus, compared with there are the boats and ships of marine propulsion of the fin shape that uses fin with prior art, can provide a kind of workability to improve and realize weight-saving and have the boats and ships of the propelling unit of boats and ships.
According to the propelling unit of boats and ships of the present invention, in the propelling unit by using the screw propeller of finned prop shaft hub cap to form, by making the shape in latter half, trailing edge side being cut that is shaped as of fin, the resistance that can reduce fin in the fin effect maintaining for the contracted flow of rear propeller, increases propeller efficiency.And diminish compared with the fin of fin of the present invention and prior art, so the work of fin becomes easily and correspondingly can realize lightweight with diminishing.
In addition,, according to the boats and ships of propelling unit with boats and ships of the present invention, can use the propelling unit of the boats and ships that propeller efficiency is high, so can improve propulsion coefficient.In 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.
Brief description of the drawings
Fig. 1 is the figure that represents that the rear from boats and ships of the formation of the propelling unit of the boats and ships of embodiments of the present invention is seen.
Fig. 2 is the lateral plan of the 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 that represents the scope of the profile of fin.
Fig. 5 is the figure that represents the first shape of the fin of the propelling unit of the boats and ships of embodiments of the present invention.
Fig. 6 is the figure that represents to make the prop shaft hub cap of Fig. 5 and the shape of the fin of fin in the time that screw propeller S. A. rotates.
Fig. 7 is the figure that represents the second shape of the fin of the propelling unit of the boats and ships of embodiments of the present invention.
Fig. 8 is the figure that represents to make the prop shaft hub cap of Fig. 7 and the shape of the fin of fin in the time that screw propeller S. A. rotates.
Fig. 9 is the figure that represents the 3rd shape of the fin of the propelling unit of the boats and ships of embodiments of the present invention.
Figure 10 is the figure that represents to make the prop shaft hub cap of Fig. 9 and the shape of the fin of fin in the time that screw propeller S. A. rotates.
Figure 11 is the figure that represents the 4th shape of the fin of the propelling unit of the boats and ships of embodiments of the present invention.
Figure 12 is the figure that represents to make the prop shaft hub cap of Figure 11 and the shape of the fin of fin in the time that screw propeller S. A. rotates.
Figure 13 is the figure that represents the 5th shape of the fin of the propelling unit of the boats and ships of embodiments of the present invention.
Figure 14 is the figure that represents to make the prop shaft hub cap of Figure 13 and the shape of the fin of fin in the time that screw propeller S. A. rotates.
Figure 15 is the figure that represents that the rear from boats and ships of the formation of the propelling unit of the boats and ships of prior art is seen.
Figure 16 is the lateral plan of the propelling unit of the boats and ships of Figure 15.
Figure 17 is the lateral plan that represents the shape of the prop shaft hub cap of prior art.
Figure 18 is the lateral plan that represents the spiral paddle of prior art and the position relationship of fin.
Figure 19 is the lateral plan that represents the setting angle of fin.
Figure 20 is the A-A section drawing that represents the Figure 19 seeing from rear at the inclination angle of fin.
Detailed description of the invention
Below, with reference to the accompanying drawings of the propelling unit of boats and ships of the present invention and there is the embodiment of the boats and ships of this propelling unit.At this, describe with the example that the fin of the rear configuration at spiral paddle is configured on prop shaft hub cap, but the present invention also can be applied to fin is arranged on to the situation in the rear part of spiral paddle of screw propeller propeller boss.In the case of this is arranged in the rear part of spiral paddle, making datum diameter is the diameter of the root of the 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 ease of understanding, and these shapes and size are from actual different.In addition,, in Fig. 3～Figure 14, Figure 15～Figure 20, for ease of observing, omit obvious spiral paddle and fin according to the situation of mapping and explanation.
As shown in Fig. 1～Figure 14, propelling unit 1A, the 1B of the boats and ships of embodiments of the present invention, 1C, 1D, 1E(are hereinafter referred to as 1A～1E) formed by screw propeller, described screw propeller has screw propeller propeller boss (screw propeller wheel hub) 2 and is arranged on spiral paddle 3, prop shaft hub cap (propeller hubcap) 5A being connected with the rear end of screw propeller propeller boss 2 on this screw propeller propeller boss 2 and is 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 by forming taking screw propeller S. A. Pc as the swivel of 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 attenuating towards 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, preferably making 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 that forms the swivel of the outer peripheral face 5b of prop shaft hub cap 5A in order is straight line, prop shaft hub cap 5A is shaped as the frustum of a cone, manufactures and is very easy to.In addition, though not shown, in the time that the bus that makes swivel is level and smooth curve, for the shape that tip attenuates smoothly towards rear from front, preferably make being shaped as of rearward end of prop shaft hub cap 5A, in the 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 be formed as aspect.On the other hand, as shown in Figure 3, the viewpoint from work is preferably formed by plane the end face of the rearward end 5a of prop shaft hub cap 5A, but also can be formed by the circular cone or the swivel etc. that approach plane.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 spiral paddle 3.That is, while seeing from the rear of prop shaft Pc, the front end 6f of the root of fin 6A～6E be configured in spiral paddle 3 root rear end each other.In addition,, from the side time, 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 by rear.This fin 6A～6E can have positive and negative camber and form, but simplicity and the reduction aspect of cost of manufacture from work consider, is suitably writing board shape.In addition, this fin 6A～6E also can have positive and negative inclination angle and installs.
And, in the present invention, as the Fig. 4 seeing from the side of hull and Fig. 5 and make prop shaft hub cap 5A and fin 6A～6E Fig. 6 in the time that screw propeller S. A. rotates as shown in, the shape of this fin 6A～6E is as follows.In addition, in Fig. 4, for fin 6A～6E comparison of embodiment, represent with fine rule prior art fin 6 roughly before and after symmetrical shape.In a word, in the present invention, fin 6A as shown in Figure 4 etc. are such, reduce the fin area (oblique line part) of the latter half of the fin 6 of prior art.
About the shape of the first half of fin 6A～6E, as shown in Fig. 6～Figure 14, the direction that links the front end 6f of root and the line segment of rear end 6a of fin 6A～6E 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., making the maxim Lfmax of this distance L f is 0.3 × Ds.
In addition, about the short transverse (perpendicular to the direction of screw propeller S. A. Pc) of fin 6A～6E, as shown in Figure 6, order is 1.0 times～2.5 times of datum diameter Ds by the diameter D1 of the first circle C1 of the outermost part of fin 6A～6E, more preferably 1.0 times～2.3 times, at the front end 6f of root and the middle position Xm place of rear end 6a of fin 6A～6E, 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, about the shape of the latter half of fin 6A～6E, as shown in Fig. 5 and Fig. 6, be formed as being accommodated in taking following the 3rd circle C3 and the 4th circle C4 in the inside of the frustum of a cone of bottom: the 3rd circle C3 as, at the middle position Xm place of the front end 6f of root and the rear end 6a of root of fin 6A～6E, diameter D3 is 2.0 times of datum diameter Ds, more preferably 1.8 times, the 4th circle C4 is, at the Xe place, rearmost end position of 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 " refer to " comprise this middle position Xm, and locate in the plane of the fin vertical with linking the front end 6f of root of fin 6A～6E and the line segment of the rear end 6a of root ".In addition, " Xe place, rearmost end position " refers to " comprise this rearmost end position Xe, and locate in the plane of the fin vertical with linking the front end 6f of root of fin 6A～6E and the line segment of the rear end 6a of root ".
About the length of fin 6A～6E, owing to the front end 6f of the root of fin 6A～6E and rear end 6a need to being configured in prop shaft hub cap 5A, so the relation from 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 or also leans on rear than this trailing edge on the fore-and-aft direction of screw propeller 2.
In addition, as shown in figure 18, about the setting angle α of fin 6A～6E, same as the prior art, the mode with the geometric pitch angle ε of the root with respect to spiral paddle 3 with the relation of (20 °≤α-ε≤+ 30 °) is installed.In addition, fin 6A～6E is arranged on the position in the gap of the 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 represents that the tilt angle gamma of fin 6A～6E is the 0 ground situation of installing and the situation of installing with positive angle (+γ) or negative angle (γ).
The form range that is subject to this fin 6A～6E of above-mentioned restriction is that the latter half of fin 6A～6E is the shape being accommodated in the oblique line part shown in Fig. 5～Figure 14.
Fin 6A shown in Fig. 5 and Fig. 6 has following characteristics: overhang Lf is foremost larger 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 the schematic diagram 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 in the time that screw propeller S. A. rotates.Line Lxm is illustrated in the front end 6f of root and the middle position Xm place of rear end 6a of fin 6A, the line in the fin plane vertical with the line of root.
Fin 6B shown in Fig. 7 and Fig. 8 has following characteristics: compared with the front end 6f of outermost part and root, forwards stretch out quite a lot ofly, in addition, the position Xe of rearmost end is identical with the rear end 6a of root.Fig. 7 is the schematic diagram 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 in the time that screw propeller S. A. rotates.
Fin 6C shown in Fig. 9 and Figure 10 has following characteristics: compared with the front end 6f of outermost part and root, forwards stretch out a little, in addition, the position Xe of rearmost end than the rear end 6a of root by rear side.Fig. 9 is the schematic diagram 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 in the time that screw propeller S. A. rotates.
Fin 6D shown in Figure 11 and Figure 12 has following characteristics: overhang Lf is foremost 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 the schematic diagram 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 in the time that screw propeller S. A. rotates.
Fin 6E shown in Figure 13 and Figure 14 has following characteristics: overhang Lf is foremost 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 the schematic diagram 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 in the time that screw propeller S. A. rotates.
In addition, about the thickness direction of fin 6A～6E, for flat board and thickness, all work is for the moment easily upper, but for even a bit will improve performance time, making fin 6A～6E is wing shape.In addition, also plate bending can be arranged to camber, or be wing shape and camber is set, in the time that 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 to the direction contrary with the camber of spiral paddle 3, camber is set, make it produce the rightabout moment of torsion Qf of moment of torsion Qp producing with spiral paddle 3.
According to the propelling unit 1A～1E of above-mentioned boats and ships, by making the shape in latter half, trailing edge side being cut that is shaped as of fin 6A～6E, can maintain the fin effect for the contracted flow of rear propeller, and can reduce the resistance of fin 6A～6E and increase propeller efficiency.And, diminish compared with the fin of fin 6A～6E and prior art, so the work of fin 6A～6E becomes easily, in addition, and diminish correspondingly, can realize lightweight.
In addition, the present invention also can be applied to the situation that fin is arranged on to the rear part of the spiral paddle of screw propeller propeller boss.In the situation that being arranged in this spiral paddle rear part, making datum diameter is the diameter of the root of the rear end of the spiral paddle of screw propeller propeller boss.In the time that fin 6A～6E is arranged on propeller boss cap 5, because cap is arranged on the physical restriction at the rear of screw propeller, the leading edge of fin 6 equates on 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 in the time that fin 6 is arranged on to the rear of spiral paddle 3 of screw propeller propeller boss 2, the front end of fin 6 also can be configured between spiral paddle.Now, b can be also negative value, be preferably-0.5 × Dcf < b < 0.Thus, seldom still can shorten the length of screw propeller propeller boss, can realize lightweight.
The boats and ships with the propelling unit of boats and ships of the present invention have above-mentioned boats and ships propelling unit 1A～1E form.According to these boats and ships, owing to using the propelling unit 1A～1E of above-mentioned boats and ships, so can improve propulsion coefficient.In addition, although realize lightweight because propelling unit 1A～1E is less, so correspondingly can make the supporting construction lightweight of cardan shaft and cardan shaft.
In industry, utilize possibility
In the propelling unit of boats and ships of the present invention, by making the shape in latter half, trailing edge side being cut that is shaped as of fin, can in the fin effect maintaining for the contracted flow of rear propeller, reduce the resistance of fin, increase propeller efficiency, and diminish compared with the fin of prior art, thus the work of fin become easily, in addition, with diminish to realizing lightweight, so can be as the propelling unit of boats and ships.
In addition, the boats and ships with the propelling unit of boats and ships of the present invention can be realized the raising of propulsion coefficient and saving fuel expense, and can realize the lightweight of the supporting construction of weight-saving cardan shaft based on propelling unit and cardan shaft, so can be used in numerous boats and ships.
Description of reference numerals
1, the propelling unit of 1A, 1B, 1C, 1D, 1E boats and ships
2 screw propeller propeller boss
The aft end face of 2a screw propeller propeller boss
3 spiral paddles
4 screw propeller S. A.s
5,5A prop shaft hub cap
The rearward end of 5a prop shaft hub cap
The outer peripheral face of 5b prop shaft hub cap
The leading section of 5f prop 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 hand of rotation distance of a fin front end and propeller blade
The screw propeller fore-and-aft direction distance of b propeller blade rear end and fin front end
C1 the first circle
C2 the second circle
C3 the 3rd circle
C4 the 4th circle
The diameter of the rearward end of Dca prop shaft hub cap
The diameter of the leading section of Dcf prop shaft hub cap
Dp diameter of propeller
Ds datum diameter
D1 the first circle diameter
D2 the second circle diameter
D3 the 3rd circle diameter
D4 the 4th circle diameter
The length of Lc prop shaft hub cap
The rear end from fin root in Le fin profile is to the horizontal throw of rearmost end
The front end from fin root in Lf fin profile is to horizontal throw foremost
The maxim of Lfmax Lf
Line in the plane of the fin that the front end of Lxm fin root is vertical with the central position of rear end and 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. a propelling unit for boats and ships arranges fin, and this fin is configured in to the rear between spiral paddle on the prop shaft hub cap of rear side of screw propeller propeller boss that is installed on screw propeller, wherein,
Taking the leading section diameter of above-mentioned prop shaft hub cap as datum diameter,
Make above-mentioned fin latter half be shaped as the inside that is accommodated in the frustum of a cone using following circle as bottom, described circle is: be 2.0 times of said reference diameter and circle centered by screw propeller centre of gration and be 1.5 times of said reference diameter and circle centered by above-mentioned screw propeller centre of gration at the rearmost end position of above-mentioned fin diameter at the central position diameter of the front-end and back-end of the root of above-mentioned fin
It is the shape that the trailing edge side of fin is cut at the latter half of fin.
2. a propelling unit for boats and ships, arranges fin at the part place, rear of the spiral paddle of the screw propeller propeller boss of screw propeller, and this fin is configured in to the rear between above-mentioned spiral paddle,
Taking the diameter of the root of the rear end of the above-mentioned spiral paddle of above-mentioned prop shaft hub as datum diameter,
Make above-mentioned fin latter half be shaped as the inside that is accommodated in the frustum of a cone using following circle as bottom, described circle is: be 2.0 times of said reference diameter and circle centered by screw propeller centre of gration and be 1.5 times of said reference diameter and circle centered by above-mentioned screw propeller centre of gration at the rearmost end position of above-mentioned fin diameter at the central position diameter of the front-end and back-end of the root of above-mentioned fin
It is the shape that the trailing edge side of fin is cut at the latter half of fin.
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 as:
Order is 0.0 times～0.3 times of said reference diameter to the distance of the direction of the front-end and back-end of link root foremost from the front end of the root of above-mentioned fin,
Order is 1.0 times～2.5 times of said reference diameter by the circle diameter of the outermost part of above-mentioned fin,
Order is 1.0 times～2.0 times of said reference diameter by the circle diameter of the outermost part of above-mentioned fin in the above-mentioned central position of above-mentioned fin.
4. boats and ships, is characterized in that having claim 1, the propelling unit of boats and ships described in 2 or 3.
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 CN102159453A (en) | 2011-08-17 |
| CN102159453B true 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) |
Families Citing this family (17)
| 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 |
| CN103857589B (en) * | 2012-09-13 | 2016-10-26 | 现代重工业株式会社 | There is the propeller hub cap of fin |
| SG11201503419XA (en) * | 2012-11-02 | 2015-06-29 | Akishima Lab Mitsui Zosen Inc | Ship propulsion device and ship provided with same |
| KR101589124B1 (en) * | 2014-02-07 | 2016-01-27 | 삼성중공업 주식회사 | Propulsion apparatus of vessel |
| KR101523920B1 (en) * | 2013-09-27 | 2015-06-01 | 삼성중공업 주식회사 | Propulsion apparatus for vessel |
| WO2014123397A1 (en) | 2013-02-08 | 2014-08-14 | 삼성중공업 주식회사 | Propulsion device for ship |
| CN103342161A (en) * | 2013-07-29 | 2013-10-09 | 褚智堂 | High-speed propeller |
| KR101913379B1 (en) * | 2014-04-08 | 2018-10-30 | 주식회사 신라금속 | Boss Cap having Asymmetry Type Fin and Propulsion Apparatus for Ship |
| 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 |
| 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 |
| 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 |
| 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 |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5311490A (en) * | 1976-07-20 | 1978-02-01 | Fumio Henmi | Screw propeller |
| 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 |
| KR970000169B1 (en) * | 1987-08-13 | 1997-01-06 | 미우라 기이치로오 | Boss cap with fins of a 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 |
| JPH0734795Y2 (en) * | 1988-01-14 | 1995-08-09 | 株式会社西日本流体技研 | Propeller Boss with fins for outboard motors |
| JPH085431B2 (en) * | 1989-01-20 | 1996-01-24 | 株式会社神戸製鋼所 | Marine propulsion device |
| JPH0744559Y2 (en) * | 1989-05-31 | 1995-10-11 | 三菱重工業株式会社 | Marine propeller with boss cap |
| JP2947357B2 (en) * | 1989-08-18 | 1999-09-13 | 日産自動車株式会社 | Propeller structure of high-speed boat |
| JP3509903B2 (en) * | 1993-09-22 | 2004-03-22 | ジャパン・ハムワージ株式会社 | Ship propulsion device |
| CN2214354Y (en) * | 1994-08-18 | 1995-12-06 | 中国船舶工业总公司第七研究院第七○八研究所 | Propeller cap with adaptive inflow fin |
-
2009
- 2009-03-30 JP JP2009082713A patent/JP5405872B2/en active Active
-
2010
- 2010-01-19 GB GB1103966.6A patent/GB2474818B/en active Active
- 2010-01-19 KR KR1020117004022A patent/KR101506911B1/en active IP Right Grant
- 2010-01-19 CN CN201080002610.5A patent/CN102159453B/en active Active
- 2010-01-19 WO PCT/JP2010/050561 patent/WO2010116770A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| JP5405872B2 (en) | 2014-02-05 |
| KR101506911B1 (en) | 2015-03-30 |
| GB201103966D0 (en) | 2011-04-20 |
| CN102159453A (en) | 2011-08-17 |
| WO2010116770A1 (en) | 2010-10-14 |
| KR20110132310A (en) | 2011-12-07 |
| GB2474818A (en) | 2011-04-27 |
| GB2474818B (en) | 2013-01-30 |
| JP2010234861A (en) | 2010-10-21 |
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