CN102320371A - Rudder blade - Google Patents
Rudder blade Download PDFInfo
- Publication number
- CN102320371A CN102320371A CN201110190521A CN201110190521A CN102320371A CN 102320371 A CN102320371 A CN 102320371A CN 201110190521 A CN201110190521 A CN 201110190521A CN 201110190521 A CN201110190521 A CN 201110190521A CN 102320371 A CN102320371 A CN 102320371A
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- rudder
- rudder blade
- blade
- cross
- screw propeller
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Abstract
The invention discloses a rudder blade and relates to the field of shipbuilding. The rudder blade disclosed by the invention is provided with two rudder blade segments which are arranged up and down, the upper rudder blade segment is provided with a cross section profile, the lower rudder blade segment of the rudder blade is provided with a cross section profile, and the cross section area of the upper rudder blade segment is more than that of the lower rudder blade segment. The rudder blade in a novel structure provided by the invention can be used for overcoming the defects existing in the traditional rudder blade, and provides a rudder with an asymmetric front edge, thus influence of an accelerated cross flow initiated by a rotating screw propeller on the rudder can be reduced, the risk of cavitation erosion on the discontinuous surface of a front edge part is prevented, and the rudder blade is quite practical.
Description
Technical field
The present invention relates to the shipbuilding field, be specifically related to a kind of rudder blade.
Background technology
Rudder blade is the body of rudder action power, is made by timber or steel.Except that razshiva, all be to process now, and majority is welded into hollow airfoil type by steel.The panel of rudder blade is claimed rudder plate, and the rudder blade of single plate rudder is rudder plate just.From the rotation axis measurement branch: a. unbalanced rudder; B. gnomon rudder; C. balanced rudder.How to distinguish the equilibrium property of rudder, look the shaft axis position on the rudder blade usually and decide.All be distributed with rudder area about axis, these rudder area effects have hydraulic pressure.Hydraulic pressure forms the torque to the rudder shaft axis.These are in the opposite direction according to torque, and total played equilibrium activity according to torque, so this rudder is called balanced rudder.The axis left side does not have rudder area, total this does not just exist required torque is not played EQUILIBRIUM CONDITION, and this is exactly unbalanced rudder, and the latter half has played equilibrium activity, so this rudder is called half hanging balancing rudder.Section shape branch from rudder blade: single plate rudder: possibly be balanced rudder, gnomon rudder or unbalanced rudder; Double plate rudder: majority is balanced rudder or gnomon rudder.It is that rudder blade by the wing profile of symmetry constitutes, and nearly all is to be welded into hollow steel plate now.The wing of asymmetric section only be device at some special boats and ships, on some speedboat, this rudder blade is simple in structure, materials are economized, cost is low, but steerage is lower, in addition, mainly is to be unfavorable for propulsion coefficient.Unbalanced rudder: because structural restriction, majority is useful single plate rudder, only if unraveled silk special arrangement, as with rudder blade fwd rudder post, constitutes a component part of rudder, though rudder sternpost when rotating is motionless, can improve steerage.This shows that above-mentioned existing rudder for ship obviously still has inconvenience and defective in structure and use, and needs progressive the improvement.In order to solve the problem of following existence; Relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly; But do not see always that for a long time suitable design is developed completion, and common product does not have appropriate structure to address the above problem, this obviously is the problem that the anxious desire of relevant dealer solves.Therefore how to found a kind of rudder blade of new structure, real one of the current important research and development problem that belongs to, also becoming the current industry utmost point needs improved target.
Summary of the invention
The invention provides a kind of rudder blade of new structure; Overcome the defective that existing rudder blade exists; And provide a kind of leading edge asymmetric rudder; Thereby can reduce the acceleration lateral flow that causes owing to screw propeller and act on the influence on the rudder, prevent the risk of the cavitation erosion on the noncontinuous surface of leading edge portion simultaneously, be very suitable for practicality by rotation.
A kind of rudder blade that the present invention proposes, said rudder blade have two rudder blade sections that are provided with up and down, and the last rudder blade section of said rudder blade has a cross-sectional plane, is last rudder blade face; The following rudder blade section of said rudder blade has a cross-sectional plane, is the lower rudder blade face; The cross-sectional area of last rudder blade face is greater than the cross-sectional area on lower rudder blade face.
The object of the invention and solve its technical matters and adopt following technical scheme to realize.For achieving the above object; According to rudder blade of the present invention; Be placed in hull the stern place rear propeller with control hull moving direction; It comprises the middle part blade around the axis that is positioned at screw propeller and is positioned at the upside of middle part blade and the upper and lower blade at downside place; Wherein this middle part blade have with respect to pass screw propeller axis and rudder vertical center line the plane and have the leading edge portion of bilateral symmetric shape; Upper blade have with respect to pass screw propeller axis and rudder vertical center line the plane and reverse with leading edge portion at the contrarotation direction upper offset of screw propeller; Lower blade has one with respect to the plane of the vertical center line of axis that passes screw propeller and rudder and reverse with the leading edge portion that is rotated in the forward the direction upper offset at screw propeller; And the leading edge portion with respect to upper and lower blade one does not form step to the leading edge portion of middle part blade at each side place of rudder on the torsional direction of upper and lower blade, but respectively on the direction opposite with the torsional direction of upper and lower blade each the side place at rudder form step, converge the leading edge portion of upper and lower blade in the leading edge portion of this each middle part, side place blade.
The present invention compared with prior art has tangible advantage and beneficial effect.Rudder blade of the present invention has advantage and beneficial effect at least: the present invention provides the rudder blade of a kind of rear propeller of the stern place that is placed in hull with the moving direction of control hull; Wherein rudder blade is divided into the upper, middle and lower blade; Wherein the leading edge portion of this middle part blade has bilaterally symmetric cross-sectional plane about the axis of screw propeller, and the leading edge portion of upper and lower blade is reversed with being rotated in the forward on the direction in the contrarotation direction of screw propeller about the axis of screw propeller respectively.Thereby; In above-mentioned rudder; The leading edge portion of upper and lower blade is about the axis of screw propeller and reverse; And the leading edge portion that is positioned at the middle part blade around the axis of screw propeller has the bilateral symmetric shape with respect to the plane of the vertical center line of the axis that passes screw propeller and rudder, and then reduces the acceleration lateral flow to the rudder that causes owing to the screw propeller by rotation and cause the risk of cavitation erosion destruction.
Description of drawings
Further set forth the present invention below in conjunction with accompanying drawing and case study on implementation.
Fig. 1 is the rudder blade structural representation.
Wherein: the 1-rudder blade; The last rudder blade section of 2-; Rudder blade section under the 3-; The last rudder blade face of 4-; 5-lower rudder blade face.
The specific embodiment
Below in conjunction with embodiment a kind of rudder blade of the present invention is described.
As shown in Figure 1, rudder blade 1 has two rudder blade sections 2,3 that are provided with up and down, and its anterior hook-type convex shoulder towards screw propeller is misplaced like this, make a hook-type convex shoulder towards larboard, and another hook-type convex shoulder is misplaced towards starboard.Two side wall surfaces of said rudder blade 1 can be incorporated into a terminal convex shoulder that deviates from screw propeller.
The last rudder blade section of said rudder blade l00 constitutes with following rudder blade section 2,3 as follows.
The above; Be merely the preferable specific embodiment of the present invention; But protection scope of the present invention is not limited thereto; Any technical personnel of being familiar with the present technique field is equal to replacement or change according to technical scheme of the present invention and inventive concept thereof in the technical scope that the present invention discloses, all should be encompassed within protection scope of the present invention.
Claims (1)
1. rudder blade is characterized in that: said rudder blade (1) has two rudder blade sections (2,3) that are provided with up and down, and the last rudder blade section (2) of said rudder blade (1) has a cross-sectional plane, is last rudder blade face (4); The following rudder blade section (5) of said rudder blade (1) has a cross-sectional plane, is lower rudder blade face (5); The cross-sectional area of last rudder blade face (4) is greater than the cross-sectional area of lower rudder blade face (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110190521A CN102320371A (en) | 2011-07-08 | 2011-07-08 | Rudder blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110190521A CN102320371A (en) | 2011-07-08 | 2011-07-08 | Rudder blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102320371A true CN102320371A (en) | 2012-01-18 |
Family
ID=45448257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110190521A Pending CN102320371A (en) | 2011-07-08 | 2011-07-08 | Rudder blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102320371A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20150080913A (en) * | 2015-06-05 | 2015-07-10 | 현대중공업 주식회사 | Rudder for ship |
| CN106985993A (en) * | 2017-03-17 | 2017-07-28 | 李赵和 | A kind of combined type ship rudder blade |
-
2011
- 2011-07-08 CN CN201110190521A patent/CN102320371A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20150080913A (en) * | 2015-06-05 | 2015-07-10 | 현대중공업 주식회사 | Rudder for ship |
| KR102026500B1 (en) | 2015-06-05 | 2019-09-27 | 한국조선해양 주식회사 | Rudder for ship |
| CN106985993A (en) * | 2017-03-17 | 2017-07-28 | 李赵和 | A kind of combined type ship rudder blade |
| CN106985993B (en) * | 2017-03-17 | 2019-01-04 | 绍兴开源机电科技有限公司 | A kind of combined type ship rudder blade |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120118 |