CN113928539A - A high-efficiency anti-vibration blade structure - Google Patents
A high-efficiency anti-vibration blade structure Download PDFInfo
- Publication number
- CN113928539A CN113928539A CN202111402890.5A CN202111402890A CN113928539A CN 113928539 A CN113928539 A CN 113928539A CN 202111402890 A CN202111402890 A CN 202111402890A CN 113928539 A CN113928539 A CN 113928539A
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- China
- Prior art keywords
- blade
- vibration
- paddle
- hole
- efficiency anti
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C11/00—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
- B64C11/16—Blades
- B64C11/18—Aerodynamic features
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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
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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
- B63H1/26—Blades
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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
- B63H1/28—Other means for improving propeller efficiency
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C11/00—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
- B64C11/02—Hub construction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C11/00—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
- B64C11/16—Blades
- B64C11/20—Constructional features
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides a high-efficiency anti-vibration paddle structure, which comprises: a hub, at least two blades, and a tip assembly; the propeller hub is fixedly connected with the root of the blade, and the tail end of the blade is provided with at least two first through holes; the wing tip assembly comprises a connecting part and a bending part, the connecting part is provided with a cavity which is sleeved with the tail end of the blade, and the cavity is provided with a second through hole and a sticking belt; the first through hole and the second through hole are detachably connected through a fixing piece. The utility model provides a high efficiency anti-vibration paddle structure through adopting the dismantlement between paddle and the wing tip subassembly to be connected, utilizes the mounting to fix the junction of wing tip subassembly and paddle simultaneously to the utilization is glued and is carried out the bonding according to the area, thereby reduces the wing tip vortex, when preventing the paddle vibration, is convenient for to the maintenance of wing tip.
Description
Technical Field
The invention relates to the technical field of propellers, in particular to a high-efficiency anti-vibration paddle structure.
Background
The propeller is a device which rotates in the air or water by means of blades and converts the rotational power of an engine into a propulsive force. The blade is connected with the hub, and the backward surface of the blade is a helicoid or a surface similar to the helicoid, so that the propelling force is generated in the working state.
The propeller tip is typically provided with a wingtip to reduce wingtip vortices generated at the propeller tip and prevent airfoil airflow from causing the propeller to vibrate. Existing propeller wingtips are often fabricated as a unitary structure that would be detrimental to wingtip maintenance.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects in the prior art and provides a high-efficiency anti-vibration paddle structure.
The invention is realized by the following technical scheme: a high efficiency anti-vibration blade structure comprising: a hub, at least two blades, and a tip assembly;
the propeller hub is fixedly connected with the root of the blade, and the tail end of the blade is provided with at least two first through holes;
the wing tip assembly comprises a connecting part and a bending part, the connecting part is provided with a cavity which is sleeved with the tail end of the blade, and the cavity is provided with a second through hole and a sticking belt;
the first through hole and the second through hole are detachably connected.
Further, the paddle comprises an upper blade surface and a lower blade surface, and the upper blade surface is fixedly provided with a winged knife along the rotation direction of the paddle.
Furthermore, a patch is arranged at the joint of the first through hole and the second through hole.
Further, the fixing member includes a bolt and/or a rivet.
Further, the convex length of the curved portion is less than or equal to 1% of the blade length.
Further, the curved portion extends along the upper blade surface.
Further, the curved portion extends in both directions along the upper blade surface and the lower blade surface.
The invention has the beneficial effects that: the utility model provides a high efficiency anti-vibration paddle structure through adopting the dismantlement between paddle and the wing tip subassembly to be connected, utilizes the mounting to fix the junction of wing tip subassembly and paddle simultaneously to the utilization is glued and is carried out the bonding according to the area, thereby reduces the wing tip vortex, when preventing the paddle vibration, is convenient for to the maintenance of wing tip.
Drawings
FIG. 1 is a side view of a high efficiency anti-vibration blade structure provided by the present invention.
FIG. 2 is a top view of a high efficiency anti-vibration blade structure provided by the present invention.
FIG. 3 is a schematic structural view of a tip assembly of a high efficiency anti-vibration blade configuration provided by the present invention.
FIG. 4 is a schematic cross-sectional view of a tip assembly in a high efficiency anti-vibration blade configuration provided by the present invention.
FIG. 5 is a schematic view of another configuration of the tip assembly of a high efficiency anti-vibration blade configuration provided by the present invention.
In the figure: 1. a hub; 2. a paddle; 3. a wing tip assembly; 4. a first through hole; 5. a connecting portion; 6. a bending section; 7. a cavity; 8. a second through hole; 9. sticking a pressing belt; 10. a winged knife; 11. pasting a piece; 12. and a fixing member.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The tail end of the existing propeller is provided with a wingtip for reducing wingtip eddy current generated at the tail end of the propeller, so that differential pressure between airfoils caused by the wingtip eddy current is avoided to cause airfoil vibration, but the integrally formed blade and the wingtip are not beneficial to maintenance, and the blade needs to be integrally replaced when maintenance is needed.
To solve the above technical problem, as shown in fig. 1, 2, 3 and 4, the present invention provides a high efficiency anti-vibration blade structure, including: a hub 1, at least two blades 2 and a tip assembly 3; in a preferred embodiment the hub 1 is fitted to the tail shaft, which is rotated by connection to the engine via a gearbox and/or coupling. The blades 2 are arranged obliquely so as to form a helicoid to generate thrust during operation.
Wherein the hub 1 is fixedly connected with the root part of the blade 2, and the tail end of the blade 2 is provided with at least two first through holes 4;
the wing tip component 3 comprises a connecting part 5 and a bending part 6, the connecting part 5 is provided with a cavity 7 which is sleeved with the tail end of the blade 2, and the cavity 7 is provided with a second through hole 8 and a sticking belt 9;
the first through hole 4 and the second through hole 8 are detachably connected through a fixing member 12. It should be added that the first through hole 4 and/or the second through hole 8 are preferably threaded through holes, and the fixing member 12 includes, but is not limited to, bolts and/or rivets. Wherein, the screw penetrates the first through hole 4 and the second through hole 8 in sequence and is fixed by a nut. In another embodiment, the rivet is used to penetrate the first through hole 4 and the second through hole 8 for fixing.
The sticking belt 9 arranged in the cavity 7 can stick the tail end of the blade 2, so that the blade 2 and the wing tip component 3 are further fixed. When the two are disassembled, the disassembly can be realized by disassembling bolts and nuts or rivets.
The utility model provides a high efficiency anti-vibration paddle structure through adopting the dismantlement between paddle and the wing tip subassembly to be connected, utilizes the mounting to fix the junction of wing tip subassembly and paddle simultaneously to the utilization is glued and is carried out the bonding according to the area, thereby reduces the wing tip vortex, when preventing the paddle vibration, is convenient for to the maintenance of wing tip.
Further, on the basis of the above implementation, the blade 2 includes an upper blade surface and a lower blade surface, and the upper blade surface is fixedly provided with a winged knife 10 along the rotation direction of the blade 2. The number of the winged knives 10 is set according to the length of the blade 2, so that the blade 2 is prevented from being separated from the lower blade surface by airflow, and the wingtip component 3 is prevented from being separated from the blade 2.
Further, a patch 11 is arranged at the joint of the first through hole 4 and the second through hole 8. The patch 11 is preferably a metal patch 11 to prevent friction between the blade 2 and the wing tip assembly 3.
Further, the fixing member 12 includes a bolt and/or a rivet. The bolts and/or rivets are selected according to the particular environment of use.
Further, the length of the projection of the curved portion 6 is less than or equal to 1% of the length of the blade 2.
Further, the curved portion 6 extends along the upper blade face.
Further, as shown in fig. 5, the bent portion 6 extends in both directions along the upper blade surface and the lower blade surface. The bending portion 6 is a vibration source for eliminating vibration by an active vibration reduction method in a unidirectional extension method. The bending portion 6 is extended in both directions to eliminate the vibration source by passive vibration reduction.
The utility model provides a high efficiency anti-vibration paddle structure, through adopting the dismantlement between paddle and the wing tip subassembly to be connected, utilize the mounting to fix the junction of wing tip subassembly and paddle simultaneously, and utilize to glue and bond according to the area, reduce wing tip vortex, and further utilize the winged knife that sets up on the paddle on the blade surface to cut off horizontal air current, and then when preventing that the paddle vibration and wing tip from droing, be convenient for to the maintenance of wing tip.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A high efficiency anti-vibration paddle structure, comprising: a hub, at least two blades, and a tip assembly;
the hub is fixedly connected with the root of the blade, and the tail end of the blade is provided with at least two first through holes;
the wing tip assembly comprises a connecting part and a bending part, the connecting part is provided with a cavity which is sleeved with the tail end of the paddle, and the cavity is provided with a second through hole and a sticking belt;
the first through hole and the second through hole are detachably connected through a fixing piece.
2. A high efficiency anti-vibration blade structure as defined in claim 1 wherein: the paddle comprises an upper blade surface and a lower blade surface, and the upper blade surface is arranged along the direction of rotation of the paddle and is fixedly provided with a winged knife.
3. A high efficiency anti-vibration blade structure as defined in claim 1 wherein: and a patch is arranged at the joint of the first through hole and the second through hole.
4. A high efficiency anti-vibration blade structure as defined in claim 1 wherein: the fixing member includes a bolt and/or a rivet.
5. A high efficiency anti-vibration blade structure as defined in claim 1 wherein: the convex length of the curved portion is less than or equal to 1% of the blade length.
6. A high efficiency anti-vibration blade structure as defined in claim 2, wherein: the curved portion extends along the upper blade surface.
7. A high efficiency anti-vibration blade structure as defined in claim 2, wherein: the bending portion extends in both directions along the upper blade surface and the lower blade surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111402890.5A CN113928539A (en) | 2021-11-24 | 2021-11-24 | A high-efficiency anti-vibration blade structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111402890.5A CN113928539A (en) | 2021-11-24 | 2021-11-24 | A high-efficiency anti-vibration blade structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113928539A true CN113928539A (en) | 2022-01-14 |
Family
ID=79288127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111402890.5A Pending CN113928539A (en) | 2021-11-24 | 2021-11-24 | A high-efficiency anti-vibration blade structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113928539A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101896401A (en) * | 2007-12-10 | 2010-11-24 | 空中客车营运有限公司 | Wingtip extension for reduction of vortex drag in aircraft |
| CN104773283A (en) * | 2013-12-05 | 2015-07-15 | 波音公司 | One-piece composite bifurcated winglet |
| CN104973233A (en) * | 2014-04-12 | 2015-10-14 | 波音公司 | Wing tip device for an aircraft wing |
| CN105346720A (en) * | 2015-11-13 | 2016-02-24 | 深圳市道通智能航空技术有限公司 | Blades, propeller and unmanned aerial vehicle |
| CN106255639A (en) * | 2014-04-04 | 2016-12-21 | 空中客车运营有限公司 | There is the aircraft wing of wingtip device and support |
| CN107444613A (en) * | 2016-05-24 | 2017-12-08 | 空中客车英国运营有限责任公司 | Winglet |
| CN206968981U (en) * | 2017-06-26 | 2018-02-06 | 深圳市大疆创新科技有限公司 | Propeller, power set and aircraft |
| CN209905055U (en) * | 2018-12-18 | 2020-01-07 | 辽宁壮龙无人机科技有限公司 | Rotor oar and unmanned aerial vehicle |
| CN112829922A (en) * | 2021-02-08 | 2021-05-25 | 北京北航天宇长鹰无人机科技有限公司 | Wingtip winglet and wing and unmanned aerial vehicle using same |
| CN216468434U (en) * | 2021-11-24 | 2022-05-10 | 唐毓 | High efficiency anti-vibration paddle structure |
-
2021
- 2021-11-24 CN CN202111402890.5A patent/CN113928539A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101896401A (en) * | 2007-12-10 | 2010-11-24 | 空中客车营运有限公司 | Wingtip extension for reduction of vortex drag in aircraft |
| CN104773283A (en) * | 2013-12-05 | 2015-07-15 | 波音公司 | One-piece composite bifurcated winglet |
| CN106255639A (en) * | 2014-04-04 | 2016-12-21 | 空中客车运营有限公司 | There is the aircraft wing of wingtip device and support |
| CN104973233A (en) * | 2014-04-12 | 2015-10-14 | 波音公司 | Wing tip device for an aircraft wing |
| CN105346720A (en) * | 2015-11-13 | 2016-02-24 | 深圳市道通智能航空技术有限公司 | Blades, propeller and unmanned aerial vehicle |
| CN107444613A (en) * | 2016-05-24 | 2017-12-08 | 空中客车英国运营有限责任公司 | Winglet |
| CN206968981U (en) * | 2017-06-26 | 2018-02-06 | 深圳市大疆创新科技有限公司 | Propeller, power set and aircraft |
| CN110248870A (en) * | 2017-06-26 | 2019-09-17 | 深圳市大疆创新科技有限公司 | Propeller, power device and aircraft |
| CN209905055U (en) * | 2018-12-18 | 2020-01-07 | 辽宁壮龙无人机科技有限公司 | Rotor oar and unmanned aerial vehicle |
| CN112829922A (en) * | 2021-02-08 | 2021-05-25 | 北京北航天宇长鹰无人机科技有限公司 | Wingtip winglet and wing and unmanned aerial vehicle using same |
| CN216468434U (en) * | 2021-11-24 | 2022-05-10 | 唐毓 | High efficiency anti-vibration paddle structure |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20220114 |