CN200964178Y - Combined airscrew - Google Patents
Combined airscrew Download PDFInfo
- Publication number
- CN200964178Y CN200964178Y CN 200620047076 CN200620047076U CN200964178Y CN 200964178 Y CN200964178 Y CN 200964178Y CN 200620047076 CN200620047076 CN 200620047076 CN 200620047076 U CN200620047076 U CN 200620047076U CN 200964178 Y CN200964178 Y CN 200964178Y
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- CN
- China
- Prior art keywords
- propeller
- blade
- dovetail furrow
- hub
- drift
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Abstract
The utility model relates to a built-up propeller, comprising propeller blades and a hub with a dovetail groove. An iron wedge is provided in the dovetail groove, the propeller blades are fixed in the dovetail groove of the hub via the iron wedge, wherein an epoxy resin packing layer is filled between the iron wedge and the propeller blades, and the hub surface is covered by an epoxy resin sealing layer. In the built-up propeller of the above structure, the propeller blades can be assembled and mounted on the hub by tightening the iron wedge, while epoxy resin is used to fill around the iron wedge and cover the hub surface, gluing the propeller blades firmly on the hub and sealing the hub. Thus, the iron wedge and the blade stem are protected from electrolytic corrosion, increasing the mounting firmness of the built-up propeller and prolonging the using life; meanwhile, the built-up propeller is characterized by simple and practical structure, low manufacturing cost, ease of repair and replacement, and wide scope of application, providing a solid foundation for the further improvement of ship power equipment.
Description
Technical field
The utility model relates to steamer engine installation field, and particularly screw propeller dynamic structure field specifically is meant a kind of screw.
Background technology
Modern industry for the application of screw propeller more and more widely, wherein comparatively traditional is exactly the integral type screw propeller, and after a blade of this kind screw propeller damaged, whole propeller just was done for, shipowner's loss is bigger.In addition, as using die castable integral type screw propeller, the weight of mould and manufacturing cost will be than making the big several times of individual blade; As with the die castable, because there is folded leaf at the blade root position, the cast-in-block screw propeller just is difficult to the demoulding, so blade ground manufacturing is one by one created propeller system with the mode of aggregate erection then for the bigger screw propeller of disk ratio.Make in order to save cost and to be convenient to, occurred screw in the prior art.
Because the marine propeller blade root bearing multidirectional reverse stress,, there is mistake will cause that blade is loosening slightly even comes off so the precision of the blade aggregate erection of screw and firmness are required very high.What Germany used in the past pushes the technology of the dovetail furrow internal fixation of propeller hub to blade with the computing machine precision Control Technology, very high to the requirement on machining accuracy of dovetail furrow and dovetail key blade petiole, probably is difficult under the general condition accomplish.Therefore the technology of drift fixed blades etc. has appearred adding with dovetail furrow in the prior art, it mainly is to be provided with drift between dovetail furrow and blade petiole, the grinding drift can be adjusted the gap between dovetail furrow and the blade petiole, the wedging drift can be fastened on the blade petiole in the dovetail furrow of propeller hub, thereby both reduced the requirement on machining accuracy of dovetail furrow and dovetail key blade petiole, and can accurately be installed in blade on the propeller hub securely again.But still there is deficiency in this technology, mainly be for the seagoing vessel screw propeller, in seawater because propeller hub, blade and drift material have difference of potential, be easy to generate electrolytic corrosion, after long-time the use, just can produce the phenomenon that propeller blade is loosening even come off, not only influenced normal navigation, even can cause great accident, exist very big potential safety hazard.
The utility model content
The purpose of this utility model is to have overcome above-mentioned shortcoming of the prior art, provide a kind of can effectively prevent screw propeller be subjected to electrolytic corrosion, improve firmness that screw installs, increase the service life, simple and practical, manufacturing cost is lower, convenient maintenance and replacement, Applicable scope screw comparatively widely.
In order to realize above-mentioned purpose, screw of the present utility model has following formation:
This screw, comprise propeller blade and propeller hub with dovetail furrow, be provided with drift in the described dovetail furrow, described propeller blade is by in the fastening dovetail furrow that is arranged at propeller hub of this drift, its principal feature is, be filled with the epoxy resin packed layer between described drift and the propeller blade, described propeller hub surface coverage has the epoxy sealing layer.
The drift of this screw is arranged between the petiole of described dovetail furrow and this propeller shank, and this drift is with in the fastening dovetail furrow that is arranged at propeller hub of the petiole of blade.
Angle between the plane of symmetry of the dovetail furrow of this screw and the cooresponding blade-span axis can be 0 °～10 °, and the degree of depth of this dovetail furrow can be 0.02 * D～0.03 * D, and wherein D is a diameter of propeller; This dovetail furrow baseplane is perpendicular to the blade line of reference by its mid point, and this baseplane width can be 1.7 λ/Z * D, and wherein λ is the diameter of propeller hub and the diameter ratio of screw propeller, and Z is the number of blade; Angle between this dovetail furrow inclined-plane and its baseplane can be between 50 °～80 °.
The mean thickness of the drift of this screw is 10mm～40mm, and is not more than 1/3 of dovetail furrow baseplane width, and the one side of this drift is parallel with the inclined-plane of dovetail furrow, another side becomes 1: 50 with this dovetail furrow～and 1: 150 tapering.
Adopted the screw of this utility model, owing to be provided with drift between dovetail furrow on the described propeller hub and the blade petiole, just can be on propeller hub by gap and wedging drift that the grinding drift just can be adjusted between dovetail furrow and the blade petiole the blade aggregate erection, simultaneously around drift and the propeller hub surface fill and covering with epoxy resin, blade glue jail on propeller hub, and propeller hub sealed, thereby make drift and petiole avoid suffering the electrolytic corrosion of seawater, improve the firmness that this screw is installed, and prolonged its service life; Simultaneously, this kind built propeller simple and practical, manufacturing cost is lower, and convenient maintenance and replacement, Applicable scope are comparatively extensive, for solid foundation has been established in the further improvement of the power plant of boats and ships.
Description of drawings
Fig. 1 is the Facad structure scheme drawing of screw of the present utility model.
The specific embodiment
In order more to be expressly understood technology contents of the present utility model, describe in detail especially exemplified by following examples.
See also shown in Figure 1, this screw, comprise propeller blade 1 and propeller hub 2 with dovetail furrow 3, be provided with drift 4 in the described dovetail furrow 3, described propeller blade 1 is by in the fastening dovetail furrow 3 that is arranged at propeller hub 2 of this drift 4, wherein, be filled with the epoxy resin packed layer between described drift 4 and the propeller blade 1, described propeller hub 2 surface coverage have epoxy sealing layer 5.
In the present embodiment, the drift 4 of described screw is arranged between the petiole of described dovetail furrow 3 and this blade 1 root, and this drift 4 is with in the fastening dovetail furrow 3 that is arranged at propeller hub 2 of the petiole of blade 1.
Simultaneously, the angle between the plane of symmetry of described dovetail furrow 3 and cooresponding blade 1 axis is 0 °～10 °, and the degree of depth of this dovetail furrow 3 is 0.02 * D～0.03 * D, and wherein D is a diameter of propeller; This dovetail furrow baseplane is perpendicular to the blade line of reference by its mid point, and this baseplane width is 1.7 λ/Z * D, and wherein λ is the diameter of propeller hub 2 and the diameter ratio of screw propeller, and Z is the number of blade 1; Angle between these dovetail furrow 3 inclined-planes and its baseplane is between 50 °～80 °.
Wherein, the mean thickness of described drift 4 is 10mm～40mm, and is not more than 1/3 of dovetail furrow baseplane width, and the one side of this drift 4 is parallel with the inclined-plane of dovetail furrow 3,3 one-tenth taperings of 1: 50～1: 150 of another side and this dovetail furrow.
In the middle of reality is used, utilize the combined type composite material blade screw propeller of a diameter D=3200mm of technology installation of the present utility model, in Cavitation Tunnel, rotating speed with 32.5r/s has carried out 24 hours astern running tests, this is a kind of punishing stress test of simulating the bad working environments of real oar, and the thrust of oar mould reaches 2058kN.Geometric shape measuring result to screw propeller behind the end of test shows that the pitch of screw propeller, skew back and trim do not have the variation of a tiny bit.Thereby proved that the screw that uses the utility model technology to be installed is very firm and durable.
Adopted above-mentioned screw, owing to be provided with drift 4 between dovetail furrow 3 on the described propeller hub 2 and blade 1 petiole, just can be on propeller hub 2 by gap and wedging drift 4 that grinding drift 4 just can be adjusted between dovetail furrow 3 and blade 1 petiole blade 1 aggregate erection, simultaneously around drift 4 and propeller hub 4 surfaces fill and covering with epoxy resin 5, blade 1 glue jail on propeller hub 2, and propeller hub 2 sealed, thereby make drift 4 and petiole avoid suffering the electrolytic corrosion of seawater, improve the firmness that this screw is installed, and prolonged its service life; Simultaneously, this kind built propeller simple and practical, manufacturing cost is lower, and convenient maintenance and replacement, Applicable scope are comparatively extensive, for solid foundation has been established in the further improvement of the power plant of boats and ships.
In this specification sheets, the utility model is described with reference to its certain embodiments.But, still can make various modifications and conversion obviously and not deviate from spirit and scope of the present utility model.Therefore, specification sheets and accompanying drawing are regarded in an illustrative, rather than a restrictive.
Claims (4)
1, a kind of screw, comprise propeller blade and propeller hub with dovetail furrow, be provided with drift in the described dovetail furrow, described propeller blade is by in the fastening dovetail furrow that is arranged at propeller hub of this drift, it is characterized in that, be filled with the epoxy resin packed layer between described drift (4) and the propeller blade (1), described propeller hub (2) surface coverage has the epoxy sealing layer.
2, screw according to claim 1, it is characterized in that, described drift (4) is arranged between the petiole of described dovetail furrow (3) and this blade (1) root, and this drift (4) is with in the fastening dovetail furrow (3) that is arranged at propeller hub (2) of the petiole of blade (1).
3, screw according to claim 1 and 2, it is characterized in that, angle between the plane of symmetry of described dovetail furrow (3) and cooresponding blade (1) axis is 0 °～10 °, and the degree of depth of this dovetail furrow (3) is 0.02 * D～0.03 * D, and wherein D is a diameter of propeller; This dovetail furrow baseplane is perpendicular to the blade line of reference by its mid point, and this baseplane width is 1.7 λ/Z * D, and wherein λ is the diameter of propeller hub (2) and the diameter ratio of screw propeller, and Z is the number of blade (1); Angle between this dovetail furrow (3) inclined-plane and its baseplane is between 50 °～80 °.
4, screw according to claim 3, it is characterized in that, the mean thickness of described drift (4) is 10mm～40mm, and be not more than 1/3 of dovetail furrow baseplane width, the one side of this drift (4) is parallel with the inclined-plane of dovetail furrow (3), and another side becomes 1: 50 with this dovetail furrow (3)～1: 150 tapering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620047076 CN200964178Y (en) | 2006-10-25 | 2006-10-25 | Combined airscrew |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620047076 CN200964178Y (en) | 2006-10-25 | 2006-10-25 | Combined airscrew |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200964178Y true CN200964178Y (en) | 2007-10-24 |
Family
ID=38868188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620047076 Expired - Lifetime CN200964178Y (en) | 2006-10-25 | 2006-10-25 | Combined airscrew |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200964178Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103770918A (en) * | 2014-01-24 | 2014-05-07 | 武汉理工大学 | Composite-material propeller |
| CN107458564A (en) * | 2017-07-27 | 2017-12-12 | 中国航空工业集团公司基础技术研究院 | Ship combined type continuous fiber reinforced composite materials blade propeller |
| WO2018075216A1 (en) * | 2016-10-17 | 2018-04-26 | General Electric Company | Apparatus and system for propeller blade aft retention |
| CN113320670A (en) * | 2021-08-03 | 2021-08-31 | 深之蓝海洋科技股份有限公司 | Propeller and manufacturing method thereof |
-
2006
- 2006-10-25 CN CN 200620047076 patent/CN200964178Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103770918A (en) * | 2014-01-24 | 2014-05-07 | 武汉理工大学 | Composite-material propeller |
| WO2018075216A1 (en) * | 2016-10-17 | 2018-04-26 | General Electric Company | Apparatus and system for propeller blade aft retention |
| US10703452B2 (en) | 2016-10-17 | 2020-07-07 | General Electric Company | Apparatus and system for propeller blade aft retention |
| CN107458564A (en) * | 2017-07-27 | 2017-12-12 | 中国航空工业集团公司基础技术研究院 | Ship combined type continuous fiber reinforced composite materials blade propeller |
| CN107458564B (en) * | 2017-07-27 | 2019-03-19 | 中国航空工业集团公司基础技术研究院 | Ship combined type continuous fiber reinforced composite materials blade propeller |
| CN113320670A (en) * | 2021-08-03 | 2021-08-31 | 深之蓝海洋科技股份有限公司 | Propeller and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20071024 |
|
| EXPY | Termination of patent right or utility model |