CN2398198Y - Porpeller for boat - Google Patents
Porpeller for boat Download PDFInfo
- Publication number
- CN2398198Y CN2398198Y CN 99245717 CN99245717U CN2398198Y CN 2398198 Y CN2398198 Y CN 2398198Y CN 99245717 CN99245717 CN 99245717 CN 99245717 U CN99245717 U CN 99245717U CN 2398198 Y CN2398198 Y CN 2398198Y
- Authority
- CN
- China
- Prior art keywords
- blade
- blades
- positions
- propeller
- cambered
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a ship propeller which is composed of a propeller hub and blades, wherein, the front surfaces of the blades are cambered blades; the largest cambered faces lie against the 1/3-1/4 positions of trailing edges; the thickest positions of the back faces of the blades are positions where blade roots lie against the 1/3-1/4 positions of leading edges; the widest positions of the blades lie against the top parts of the blades. In the utility model, the largest cambered faces are adjacent to the trailing edges, so that the sailing speed of the propeller becomes ideal. The thickest thicknesses are at positions where the blade roots are adjacent to the leading edges, so that the reversing sensitivity is raised, and the strength is improved. The skew angles of the cambered faces are from zero DEG to 5 DEG, so that the propelling effect becomes ideal.
Description
The utility model relates to screw propeller, mainly is the screw propeller that is used on the power driven vessel.
Screw propeller is as the propelling unit of power driven vessel, and the structure of its blade and shape are very crucial, will directly affect the energy consumption and the speed of ship.The screw propeller that uses in the power driven vessel is arranged, the one, the screw propeller blade face is the plane, the 2nd, the widest part of blade is in the stage casing of blade, and therefore, prior art exists propulsive force little, and volume is big, advances weak effect, defectives such as big energy-consuming.
The purpose of this utility model is in order to overcome the defective of prior art, to provide a kind of blade curve form, thickness and the widest part to screw propeller to make improvements the design-calculated marine propeller.
The technical scheme of a kind of marine propeller of the utility model is: be made up of propeller hub and blade, the front of its blade is a cambered blade, maximum curved surface place leans against the - place of lagging edge, and the thickness of the leaf back of blade is - place that blade root leans against guide margin, and blade the widest part leans against the blade top.
A kind of marine propeller of the present utility model, its skew angle are the 0-5 degree.
The utility model discloses the screw propeller on a kind of power driven vessel, its front is a cambered blade, and maximum curved surface is in the - place of lagging edge, improves the propulsive force of blade and effectively acceleration.For the sensitivity that makes reversing improves and the intensity increase, maximum thickness is that blade root is near guide margin.Blade the widest part is near from the top, and is big with water engaging surface, advances strong.Pitch is constant pitch or variable pitch.Skew angle is few more good more, generally is the 0-5 degree, makes curved surface reach optimal propelling effect.Compared with the prior art, volume-diminished , the speed of a ship or plane improves more than 15%.
Fig. 1 is the utility model marine propeller structural representation.
Below in conjunction with Fig. 1 embodiment of the present utility model is done detailed explanation.
The utility model relates to motor-driven marine propeller, is made up of institutes such as propeller hub 1 and blades 2, and blade is that the 3-4 sheet is uniform around columnar propeller hub usually, and blade positive 3 is a curved surface, and is right helicoids, and skew angle is the 0-5 degree.Maximum curved surface place 9 leans against lagging edge 4, as shown in Figure 1, divides 4 equal portions or 3 equal portions with whole blade face, and about the - place of lagging edge, the best is the place.The slightly triangular in shape or half moon of the leaf back 5 of blade (i.e. Zheng Mian reverse side) is to be good in gable top with circular arc, and gable top is exactly blade thickness 10, and thick place leans against guide margin 8, as shown in Figure 1, generally at guide margin - place, bestly is the place.Blade broaden gradually outward, and the top is and for example fan-shaped, so a widest part 6 is arranged near narrower and small one of propeller hub.
Claims (2)
1, a kind of marine propeller, draw a bow to the full (1) and blade (2) is formed by oar, it is characterized in that blade front (3) is cambered blade, maximum curved surface place (9) leans against lagging edge (4) - place, the thickness (10) of the leaf back of blade (5) is - place that blade root leans against guide margin, and blade the widest part (6) leans against blade top (7).
2, a kind of marine propeller as claimed in claim 1 is characterized in that skew angle is the 0-5 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99245717 CN2398198Y (en) | 1999-09-26 | 1999-09-26 | Porpeller for boat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99245717 CN2398198Y (en) | 1999-09-26 | 1999-09-26 | Porpeller for boat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2398198Y true CN2398198Y (en) | 2000-09-27 |
Family
ID=34031544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99245717 Expired - Fee Related CN2398198Y (en) | 1999-09-26 | 1999-09-26 | Porpeller for boat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2398198Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106143850A (en) * | 2016-06-17 | 2016-11-23 | 中国舰船研究设计中心 | Propeller blade section and application process thereof |
-
1999
- 1999-09-26 CN CN 99245717 patent/CN2398198Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106143850A (en) * | 2016-06-17 | 2016-11-23 | 中国舰船研究设计中心 | Propeller blade section and application process thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |