CN204775950U - Big big disk ratio constant pitch airscrew of rake - Google Patents
Big big disk ratio constant pitch airscrew of rake Download PDFInfo
- Publication number
- CN204775950U CN204775950U CN201520132934.0U CN201520132934U CN204775950U CN 204775950 U CN204775950 U CN 204775950U CN 201520132934 U CN201520132934 U CN 201520132934U CN 204775950 U CN204775950 U CN 204775950U
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- CN
- China
- Prior art keywords
- hub
- contact surface
- propeller
- buffer unit
- rake
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Abstract
The utility model relates to a big big disk ratio constant pitch airscrew of rake, including propeller hub and the six slice paddles of evenly distributed in the propeller hub periphery, the propeller hub is become by two hub body groups, the hub body is the cone structure, and two faces of the hub body are top surface and contact surface respectively, the diameter of contact surface is greater than the diameter of top surface, is equipped with the structure on the contact surface for the standing groove of hemispheroid, and the standing groove periphery evenly is equipped with six joint grooves, the contact surface of two hubs body is laminated each other, makes two standing grooves combination balling -up body structures place the chamber, and the joint passageway of cylinder structures is synthesized to two joint bank of cells, the embedded setting of the spliced pole of paddle makes the buffer unit be arranged in and places the chamber in the joint passageway, two hub bodies weld an organic whole, can guarantee that the wake of the quotation department of screw is even, reduce ship hull vibration to and to the screw corruption, stability has been improved.
Description
Technical field
The utility model relates to advanced manufacturing industry and shipbuilding industry, and particularly a kind of large rake platter surface compares fixed pitch propeller.
Background technology
Screw propeller depends on blade to rotate in air or water, be the device of propulsive force by turn of engine power conversion, marine propeller forms by propeller hub with along the 3-6 sheet blade that propeller hub even circumferential distributes usually, and the one side backward of leaf is helical surface or a kind of propelling unit being similar to helical surface.Screw propeller is for hull provides the major part of power, is that the quality of screw propeller is directly connected to the navigation performance of boats and ships for ship's navigation provides the device of power.
Along with the development of larger-sized vessel, the weight of screw propeller and diameter also constantly becoming large, form large-scale or ultra-large type screw propeller.The maximization of boats and ships especially hypertrophyization brings a serious consequence to be: the wake at the card place of screw propeller becomes more uneven, the deterioration of wake condition makes propeller cavitation and the ship vibration because of cavity generation, propeller erosions etc. are more serious, simultaneously, the increase that large ship power advances, improving constantly of ship speed, also impel the cavity of screw propeller and exciting problem more outstanding, on the other hand, in modern ship for civil use design, to quietness, the traveling comfort of inhabitation and economy it is also proposed higher requirement.
Utility model content
The utility model proposes a kind of large rake platter surface than fixed pitch propeller for the problems referred to above, can ensure that the wake at the card place of screw propeller is even, reduce ship vibration, and to propeller erosion, improve stability.Concrete technical scheme is as follows:
A kind of large rake platter surface compares fixed pitch propeller, comprise propeller hub and six blades being evenly distributed on propeller hub periphery, described propeller hub is made up of two hub bodies, described hub body is cone structure, two faces of hub body are respectively end face and contact surface, the diameter of described contact surface is greater than the diameter of end face, it is hemispheroidal standing groove that contact surface is provided with structure, standing groove periphery is evenly provided with six buckling grooves, the contact surface of described two hub bodies is bonded to each other, make two standing grooves be combined into sphere structure placed cavity, two buckling grooves are combined into the shackle passageway of cylindrical structure;
Described blade comprises blade body, joint pin and buffer unit in integral structure, the disk ratio > 0.7 of described blade body, blade body is provided with some flow deflectors, described flow deflector is arcuate structure, flow deflector is arranged perpendicular to blade body, described joint pin and shackle passageway free-running fit, the length L1 of joint pin is greater than the length L2 of shackle passageway, described buffer unit is dome structure, the cross sectional shape of buffer unit is arc-shaped structure, and the right central angle a of its circular arc is 45-70 °;
The joint pin of described blade is Embedded to be arranged in shackle passageway, makes buffer unit be arranged in placed cavity, and described two hub bodies are integrally welded.
The large rake platter surface of above-mentioned one than fixed pitch propeller, wherein, described flow deflector be the right central angle b of circular arc be 105-115 °.
Beneficial effect:
Screw propeller of the present utility model has the feature of large rake, platter surface ratio, can ensure that the wake at the card place of screw propeller is even, reduce ship vibration, and to propeller erosion, improve stability;
Propeller hub adopts split-type structural, and blade is placed therein welding fabrication again, the buffer unit of blade is arranged in the placed cavity of hub body, can ensure that screw propeller is in operational process, the operation of blade has certain flexibility, makes it run more stable, improves its service life;
Flow deflector serves the effect of abundant water conservancy diversion in screw propeller operational process, makes wake even, improves safety, also ensure that the quietness of screw propeller operational process to a certain extent.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Fig. 2 is the contact face structure schematic diagram of the utility model hub body.
Fig. 3 is the utility model paddle blade structure schematic diagram.
Detailed description of the invention
For making the technical solution of the utility model clear and definite more; be described further the utility model below in conjunction with accompanying drawing, any technical characteristic to technical solutions of the utility model carries out the scheme that equivalencing and conventional reasoning draw and all falls into the utility model protection domain.
A kind of large rake platter surface compares fixed pitch propeller as shown in the figure, comprise propeller hub 1 and six blades 2 being evenly distributed on propeller hub 1 periphery, described oar 1 hub is made up of two hub bodies 3, described hub body 3 is cone structure, two faces of hub body 3 are respectively end face 4 and contact surface 5, the diameter of described contact surface 5 is greater than the diameter of end face 4, it is hemispheroidal standing groove 6 that contact surface 5 is provided with structure, standing groove 6 periphery is evenly provided with six buckling grooves 7, the contact surface 5 of described two hub bodies 3 is bonded to each other, two standing grooves 6 are made to be combined into sphere structure placed cavity 8, two buckling grooves 7 are combined into the shackle passageway 9 of cylindrical structure,
Described blade 2 comprises the blade body 10 in integral structure, joint pin 11 and buffer unit 12, the disk ratio > 0.7 of described blade body 10, blade body 10 is provided with some flow deflectors 13, described flow deflector 13 is arcuate structure, described flow deflector 13 be the right central angle b of circular arc be 105 °, flow deflector 13 is arranged perpendicular to blade body 10, described joint pin 11 and shackle passageway 9 free-running fit, the length L1 of joint pin 11 is greater than the length L2 of shackle passageway 9, described buffer unit 12 is dome structure, the cross sectional shape of buffer unit 12 is arc-shaped structure, the right central angle a of its circular arc is 55 °,
The joint pin 11 of described blade is Embedded to be arranged in shackle passageway 9, makes buffer unit 12 be arranged in placed cavity 8, and described two hub bodies 3 are integrally welded.
Screw propeller of the present utility model has large rake, namely rake amplitude is larger, from the most inboard (0.2R) until outermost (1.0R) whole process parabolically changes, the feature of the disk ratio > 0.7 of platter surface ratio, i.e. blade body, can ensure that the wake at the card place of screw propeller is even, reduce ship vibration, and to propeller erosion, improve stability;
Propeller hub adopts split-type structural, and blade is placed therein welding fabrication again, the buffer unit of blade is arranged in the placed cavity of hub body, can ensure that screw propeller is in operational process, the operation of blade has certain flexibility, makes it run more stable, improves its service life;
Flow deflector serves the effect of abundant water conservancy diversion in screw propeller operational process, makes wake even, improves safety, also ensure that the quietness of screw propeller operational process to a certain extent.
Claims (2)
1. a large rake platter surface compares fixed pitch propeller, it is characterized by, comprise propeller hub and six blades being evenly distributed on propeller hub periphery, described propeller hub is made up of two hub bodies, described hub body is cone structure, two faces of hub body are respectively end face and contact surface, the diameter of described contact surface is greater than the diameter of end face, it is hemispheroidal standing groove that contact surface is provided with structure, standing groove periphery is evenly provided with six buckling grooves, the contact surface of described two hub bodies is bonded to each other, two standing grooves are made to be combined into sphere structure placed cavity, two buckling grooves are combined into the shackle passageway of cylindrical structure,
Described blade comprises blade body, joint pin and buffer unit in integral structure, the disk ratio > 0.7 of described blade body, blade body is provided with some flow deflectors, described flow deflector is arcuate structure, flow deflector is arranged perpendicular to blade body, described joint pin and shackle passageway free-running fit, the length L1 of joint pin is greater than the length L2 of shackle passageway, described buffer unit is dome structure, the cross sectional shape of buffer unit is arc-shaped structure, and the right central angle a of its circular arc is 45-70 °;
The joint pin of described blade is Embedded to be arranged in shackle passageway, makes buffer unit be arranged in placed cavity, and described two hub bodies are integrally welded.
2. rake platter surface as claimed in claim 1 a kind of large is than fixed pitch propeller, it is characterized by, described flow deflector be the right central angle b of circular arc be 105-115 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520132934.0U CN204775950U (en) | 2015-03-10 | 2015-03-10 | Big big disk ratio constant pitch airscrew of rake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520132934.0U CN204775950U (en) | 2015-03-10 | 2015-03-10 | Big big disk ratio constant pitch airscrew of rake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204775950U true CN204775950U (en) | 2015-11-18 |
Family
ID=54516052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520132934.0U Expired - Fee Related CN204775950U (en) | 2015-03-10 | 2015-03-10 | Big big disk ratio constant pitch airscrew of rake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204775950U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112319751A (en) * | 2020-10-13 | 2021-02-05 | 北京航天控制仪器研究所 | Split type propeller hub installation and seal structure of underwater vehicle screw propeller |
-
2015
- 2015-03-10 CN CN201520132934.0U patent/CN204775950U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112319751A (en) * | 2020-10-13 | 2021-02-05 | 北京航天控制仪器研究所 | Split type propeller hub installation and seal structure of underwater vehicle screw propeller |
| CN112319751B (en) * | 2020-10-13 | 2021-10-01 | 北京航天控制仪器研究所 | Split type propeller hub installation and seal structure of underwater vehicle screw propeller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 |