CN112607004A - Transversely-folded propeller - Google Patents
Transversely-folded propeller Download PDFInfo
- Publication number
- CN112607004A CN112607004A CN202011570756.1A CN202011570756A CN112607004A CN 112607004 A CN112607004 A CN 112607004A CN 202011570756 A CN202011570756 A CN 202011570756A CN 112607004 A CN112607004 A CN 112607004A
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- Prior art keywords
- paddle
- propeller
- parts
- connecting piece
- base
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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
- B64C11/20—Constructional features
- B64C11/28—Collapsible or foldable blades
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transmission Devices (AREA)
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Abstract
The invention discloses a transversely-folded propeller, which sequentially comprises a base connected with a rotating shaft, an inner paddle positioned in the middle of a paddle, an outer paddle positioned on the outermost side and a connecting piece used for connecting the three parts; or comprises a base connected with the rotating shaft, an outer paddle and a connecting piece used for connecting the two parts; wherein, one end of the base, two ends of the inner paddle and one end of the outer paddle are respectively provided with three-page type connecting parts, the same position of each page is provided with a through hole, and the two three-page type connecting parts and a connecting piece are matched to form two hinge mechanisms. The propeller has the advantages of small storage volume, simple structure, high effective wing area occupation ratio, high retraction and expansion speed and no need of manual intervention for expansion. The length of the effective paddle can be increased on the premise of not changing the storage space of the aircraft, or the space occupied by the aircraft storage can be reduced under the condition of keeping the length of the paddle unchanged.
Description
Technical Field
The invention relates to a transversely-folded propeller which can be widely applied to the fields of helicopters, gyroplanes, foldable unmanned planes, hovercars and the like which need to reduce the space occupied by the propeller.
Background
The aerospace industry is rapidly developing, and various new aircrafts such as flying automobiles, multi-rotor unmanned planes and the like emerge endlessly. To the aircraft that leans on the screw to provide lift, for example most hovercar, helicopter, many rotor unmanned aerial vehicle etc. often because the screw of its major diameter is in when idle, need occupy very big space, lead to space utilization low. Or the diameter of the propeller is forced to be reduced in pursuit of higher space utilization rate, so that the power of the aircraft is insufficient, the oil consumption rate of the aircraft is improved, and the service life of an engine is shortened.
For aircraft that provide thrust or drag by propellers, such as piston engines, turbine engines, and fixed wing aircraft driven by turboshaft engines, thrust tends to be proportional to the square of the diameter of the propeller, so large diameter propellers have greater thrust. However, considering the taking off and landing of the airplane, the increase of the diameter of the propeller is limited by the height of the airplane, so that the economy of the airplane can be greatly improved if the folded propeller can be used and unfolded at a proper time.
Currently, there are two types of existing folding propellers on the market: one is a longitudinal folding propeller, namely the propeller is folded towards the direction of a rotating shaft, so that the axial length is lengthened, and the space utilization rate is not substantially improved; the second is a folding fan type horizontal folding propeller, which is commonly found on military helicopters, but the length of the folding front and rear propellers is not changed, and thus the folding propeller cannot be applied to the problems mentioned above.
Disclosure of Invention
In order to overcome the problems in the prior art, the invention provides the transversely folded propeller, which can greatly reduce the storage length of a rotor wing.
A transversely-folded propeller sequentially comprises a base connected with a rotating shaft, an inner paddle positioned in the middle of a paddle, an outer paddle positioned on the outermost side and a connecting piece used for connecting the three parts; or comprises a base connected with the rotating shaft, an outer paddle and a connecting piece used for connecting the two parts; wherein, one end of the base, two ends of the inner paddle and one end of the outer paddle are respectively provided with three-page type connecting parts, the same position of each page is provided with a through hole, and the two three-page type connecting parts and a connecting piece are matched to form two hinge mechanisms.
The connecting piece is shaped like two crosses connected in series, and a through hole is respectively arranged at the left side and the right side of a cross in the middle of each cross.
The number of the inner paddles is one or more.
The invention has the beneficial effects that:
the base has the commonality, does not change traditional pivot screw connected mode, one end is equipped with three page formula connecting portions for carry out the supporting with the connecting piece.
The main part of the inner paddle is a common paddle, but three-leaf connecting parts are added at two ends of the paddle and are used for being connected with the base or the outer paddle in a matching way; in addition, the propeller can be matched with the inner propeller continuously, and the effective length of the propeller is prolonged.
The outer paddle is characterized in that the trunk part of the outer paddle is a common paddle, but a special mechanism three-leaf connecting part is additionally arranged at one end of the outer paddle and is used for being connected with the base or the inner paddle in a matching way, and the outer paddle can also be directly connected with the base and works under the condition that the folding efficiency is 50%.
The connecting piece is a mechanism specially designed for the folding paddle, can be connected with the base, the inner paddle, the outer paddle and the like, and has proper length to ensure that parts of each part can be kept parallel in a folded state without leaving too large gaps; at the same time, the components should be sufficiently small so as not to significantly affect the aerodynamic properties.
The transversely folded propeller has the advantages of small storage volume, simple structure, high effective wing area occupation ratio, high retraction and expansion speed and no need of manual intervention for expansion. The length of the effective paddle can be increased on the premise of not changing the storage space of the aircraft, or the space occupied by the aircraft storage can be reduced under the condition of keeping the length of the paddle unchanged.
Drawings
Fig. 1 is an overall assembly view of a transversely folded propeller.
Fig. 2 is an overall overview of the laterally folded propeller base.
Fig. 3 is an overview of a transversely folded propeller connection.
FIG. 4 is an enlarged partial view of a transversely folded propeller blade attachment structure.
Fig. 5 is an overview of the transversely folded propeller after it has been folded.
In the figure, a base 1, an inner paddle 2, an outer paddle 3 and a connecting piece 4.
Detailed Description
The invention is further described below with reference to the figures and examples.
As shown in fig. 1, the transversely folded propeller is divided into four modules based on the traditional propeller, and sequentially comprises a base 1 connected with a rotating shaft, an inner paddle 2 positioned in the middle of a blade, an outer paddle 3 positioned at the outermost side and a connecting piece 4 used for connecting all parts; wherein, one end of the base 1, two ends of the inner paddle 2 and one end of the outer paddle 3 are respectively provided with a three-page type connecting part, and the same position of each page is provided with a through hole. As shown in fig. 3, the connecting member 4 is shaped like two crosses connected in series (superposed), each cross having a through hole in the middle thereof and on both left and right sides of the cross, respectively. The two three-page type connecting parts and the connecting piece 4 are matched to form two hinge mechanisms, so that the modules can be connected by the connecting piece 4, and bolts are required to be inserted into the through holes to play a role in rotating and fixing during connection.
As shown in fig. 2, the base 1 portion of the propeller folded transversely has two functions: connecting the output shaft; ② is connected with the inner paddle 2. The part connected with the output shaft can adopt a connection mode which is universal in the market, and the part connected with the inner paddle 2 is provided with a three-page type connecting part.
As shown in fig. 3, the connecting member 4 is used to connect the base and the inner paddle, and the inner paddle and the outer paddle.
As shown in fig. 4, the three-leaf connection is used to mate the connecting member 4, and is present on the end faces of the base, the inner and outer paddles, and has a hinge mechanism complementary to the hinge structure of the connecting member 4.
Fig. 5 shows an overview of the transversely folded propeller after it has been folded.
The technical solutions of the present invention are described in detail in the above-mentioned embodiments, it should be understood that the above-mentioned embodiments are only examples of the present invention, and are not intended to limit the present invention, and any modifications, additions, equivalents and the like that are within the scope of the principles of the present invention should be included in the scope of the present invention.
Claims (3)
1. A transversely folded propeller characterized by: the paddle sequentially comprises a base (1) connected with a rotating shaft, an inner paddle (2) positioned in the middle of the paddle, an outer paddle (3) positioned on the outermost side and a connecting piece (4) used for connecting the three parts; or comprises a base (1) connected with the rotating shaft, an outer paddle (3) and a connecting piece (4) used for connecting the two parts; wherein, one end of the base (1), two ends of the inner paddle (2) and one end of the outer paddle (3) are respectively provided with three-page type connecting parts, the same position of each page is provided with a through hole, and the two three-page type connecting parts and a connecting piece (4) are matched to form two hinge mechanisms.
2. The laterally folded propeller of claim 1, wherein: the connecting piece (4) is shaped like two crosses connected in series, and a through hole is respectively arranged on the left side and the right side of a cross in the middle of each cross.
3. The laterally folded propeller of claim 1, wherein: the number of the inner paddles (2) is one or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011570756.1A CN112607004A (en) | 2020-12-26 | 2020-12-26 | Transversely-folded propeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011570756.1A CN112607004A (en) | 2020-12-26 | 2020-12-26 | Transversely-folded propeller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112607004A true CN112607004A (en) | 2021-04-06 |
Family
ID=75249261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011570756.1A Pending CN112607004A (en) | 2020-12-26 | 2020-12-26 | Transversely-folded propeller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112607004A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103233636A (en) * | 2013-03-28 | 2013-08-07 | 中山市福瑞卫浴设备有限公司 | Chain hinge for shower room |
| CN205293089U (en) * | 2016-01-14 | 2016-06-08 | 四川景飞无人机科技有限公司 | Foldable screw of initiative of many rotors |
| CN105947182A (en) * | 2016-05-25 | 2016-09-21 | 李帜 | Foldable propeller and aircraft |
| US20180257769A1 (en) * | 2017-03-10 | 2018-09-13 | Gopro, Inc. | Self-folding propeller |
| CN108621725A (en) * | 2018-05-09 | 2018-10-09 | 东北石油大学 | A kind of foldable propeller |
| CN108657418A (en) * | 2018-06-06 | 2018-10-16 | 中国船舶重工集团公司第七〇九研究所 | A kind of multi-rotor aerocraft folding paddle unfolding mechanism that flexible can be locked |
| CN209023104U (en) * | 2018-06-15 | 2019-06-25 | 深圳远行智能航空科技有限公司 | A kind of high efficiency propeller and unmanned vehicle |
| CN110001930A (en) * | 2019-03-28 | 2019-07-12 | 蔡闯 | A kind of wheel paddle assembly of propeller and the aircraft automobile using the propeller |
| EP3584168A1 (en) * | 2018-06-20 | 2019-12-25 | Airbus Operations, S.L.U. | Turbomachinery for an aircraft |
| CN210416958U (en) * | 2019-06-28 | 2020-04-28 | 深圳市大疆创新科技有限公司 | Screw, power suit and unmanned vehicles |
| CN211647959U (en) * | 2019-12-25 | 2020-10-09 | 国网山东省电力公司东营供电公司 | Auxiliary tool for line inspection |
| CN112061388A (en) * | 2020-08-17 | 2020-12-11 | 南京航空航天大学 | Automatic folding propeller capable of limiting and working method thereof |
-
2020
- 2020-12-26 CN CN202011570756.1A patent/CN112607004A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103233636A (en) * | 2013-03-28 | 2013-08-07 | 中山市福瑞卫浴设备有限公司 | Chain hinge for shower room |
| CN205293089U (en) * | 2016-01-14 | 2016-06-08 | 四川景飞无人机科技有限公司 | Foldable screw of initiative of many rotors |
| CN105947182A (en) * | 2016-05-25 | 2016-09-21 | 李帜 | Foldable propeller and aircraft |
| US20180257769A1 (en) * | 2017-03-10 | 2018-09-13 | Gopro, Inc. | Self-folding propeller |
| CN108621725A (en) * | 2018-05-09 | 2018-10-09 | 东北石油大学 | A kind of foldable propeller |
| CN108657418A (en) * | 2018-06-06 | 2018-10-16 | 中国船舶重工集团公司第七〇九研究所 | A kind of multi-rotor aerocraft folding paddle unfolding mechanism that flexible can be locked |
| CN209023104U (en) * | 2018-06-15 | 2019-06-25 | 深圳远行智能航空科技有限公司 | A kind of high efficiency propeller and unmanned vehicle |
| EP3584168A1 (en) * | 2018-06-20 | 2019-12-25 | Airbus Operations, S.L.U. | Turbomachinery for an aircraft |
| CN110001930A (en) * | 2019-03-28 | 2019-07-12 | 蔡闯 | A kind of wheel paddle assembly of propeller and the aircraft automobile using the propeller |
| CN210416958U (en) * | 2019-06-28 | 2020-04-28 | 深圳市大疆创新科技有限公司 | Screw, power suit and unmanned vehicles |
| CN211647959U (en) * | 2019-12-25 | 2020-10-09 | 国网山东省电力公司东营供电公司 | Auxiliary tool for line inspection |
| CN112061388A (en) * | 2020-08-17 | 2020-12-11 | 南京航空航天大学 | Automatic folding propeller capable of limiting and working method thereof |
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Application publication date: 20210406 |
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