CN110127036A - A kind of variable-pitch propeller blade and propeller hub attachment device - Google Patents
A kind of variable-pitch propeller blade and propeller hub attachment device Download PDFInfo
- Publication number
- CN110127036A CN110127036A CN201910426483.4A CN201910426483A CN110127036A CN 110127036 A CN110127036 A CN 110127036A CN 201910426483 A CN201910426483 A CN 201910426483A CN 110127036 A CN110127036 A CN 110127036A
- Authority
- CN
- China
- Prior art keywords
- lasso
- blade
- propeller hub
- casing
- neck
- 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.)
- Pending
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Classifications
-
- 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
- B64C11/04—Blade mountings
- B64C11/06—Blade mountings for variable-pitch blades
Abstract
The invention discloses a kind of variable-pitch propeller blades and propeller hub attachment device, it include: that blade is connect by connection component with propeller hub, the root end of blade includes neck and the limit pier nose positioned at neck end point, propeller hub includes lasso, connection component includes adjustment casing and fastening nut, in which: the limit stop ring integrally formed with it is arranged inside lasso and between its both ends；The periphery of lasso one end is equipped with external screw thread；The outer diameter for adjusting casing is incremented by successively from one end to its another extreme direction；Under installation condition, adjusting sleeve pipe sleeve is mounted in the neck of blade, and adjust the miner diameter end direction limit pier nose of casing, limit pier nose end where the external screw thread of lasso protrude into lasso and and limit stop ring against, the inner wall of casing and lasso is adjusted against fastening nut is sleeved on the outside of lasso and is threadedly coupled with the external screw thread on lasso.The present invention can effectively improve the fastness and reliability that blade is connect with propeller hub.
Description
Technical field
The present invention relates to air equipment technical field more particularly to a kind of variable-pitch propeller blade and propeller hub attachment devices.
Background technique
An important component of the propeller as aircraft, whens propeller works, subject from engine and air-flow
Vibration stress, while high bending stress and huge centrifugal stress are loaded, these complicated and huge stress cause propeller
Always there is risk when system works, the mechanical breakdown generated therefrom, which may cause forced landing or generate, is enough wrap up
High vibration.However currently, the connection of market major part propeller and propeller hub is only that pressing friction power is relied on to realize, and paddle
Leaf is largely carbon fiber structural, and compact dimensions tolerance cannot be accurate as metal, and whens propeller works, which subjects, to be come from
The vibration stress of engine and air-flow, while high bending stress and huge centrifugal stress are loaded, these are complicated and huge
There is risks always when stress causes the propeller system to work, and propeller security reliability reduces, or even causes safety accident.
Summary of the invention
Technical problem present in technology based on the above background, the present invention propose that a kind of variable-pitch propeller blade connects with propeller hub
Connection device.
A kind of variable-pitch propeller blade proposed by the present invention and propeller hub attachment device, comprising: blade by connection component with
Propeller hub connection, the root end of the blade includes neck and the limit pier nose positioned at neck end point, and the propeller hub includes lasso,
The connection component includes adjustment casing and fastening nut, in which:
The limit stop ring integrally formed with it is set inside lasso and between its both ends；The periphery of lasso one end is equipped with
External screw thread；The outer diameter for adjusting casing is incremented by successively from one end to its another extreme direction；Under installation condition, adjusting sleeve pipe sleeve is mounted in
The neck of blade, and the miner diameter end for adjusting casing limits pier nose end where the external screw thread of lasso and protrudes into set towards limit pier nose
In circle and and limit stop ring against, adjust the inner wall of casing and lasso against, fastening nut be sleeved on the outside of lasso and with set
External screw thread on circle is threadedly coupled.
Preferably, lasso be equipped with from close to its externally threaded one end to cutting far from externally threaded one end is axially extending
Slot, the grooving are equipped at least two, and each grooving is circumferentially uniformly distributed around lasso.
Preferably, the port side of fastening nut one end is equipped with the thrust retaining ring turned down to its inside, and in the mounted state,
Adjust casing far from limit pier nose one end and thrust retaining ring against.
Preferably, it adjusts and is equipped with flanging at the outer bead of the bigger diameter end of casing.
Preferably, limit pier nose smoothly transits with neck.
In the present invention, by the way that adjustment casing is arranged in blade neck, to utilize the taper variation adjustment blade of adjustment casing
The dimensional tolerance of neck, and fixed blade and collar lock using fastening nut, thus realize that blade is fixed with propeller hub, this
Connection type can effectively improve the fastness and reliability that blade is connect with propeller hub.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of variable-pitch propeller blade and propeller hub attachment device proposed by the present invention.
Specific embodiment
In the following, technical solution of the present invention is described in detail by specific embodiment.
As shown in FIG. 1, FIG. 1 is a kind of structural representations of variable-pitch propeller blade and propeller hub attachment device proposed by the present invention
Figure.
Referring to Fig.1, a kind of variable-pitch propeller blade proposed by the present invention and propeller hub attachment device, comprising: blade 1 passes through company
Connected components are connect with propeller hub, and the root end of the blade 1 includes neck and the limit pier nose positioned at neck end point, and limits pier
H&N portion smoothly transits.The propeller hub includes lasso 2, and the connection component includes adjustment casing 3 and fastening nut 4, in which:
2 inside of lasso and the setting limit stop ring 21 integrally formed with it between its both ends；The periphery of 2 one end of lasso is equipped with outer spiral shell
Line；The outer diameter for adjusting casing 3 is incremented by successively from one end to its another extreme direction；Under installation condition, adjustment casing 3 is sleeved on paddle
The neck of leaf 1, and the miner diameter end (one end for covering 3 minimum outer diameter of tubing) for adjusting casing 3 limits pier nose towards limit pier nose
The end where the external screw thread of lasso 2 is protruded into lasso 2 and with limit stop ring 21 against adjustment casing 3 and the inner wall of lasso 2 support
It leans on, fastening nut 4 is sleeved on the outside of lasso 2 and is threadedly coupled with the external screw thread on lasso 2.
From the foregoing, it will be observed that the present invention is changed by the way that adjustment casing 3 is arranged in 1 neck of blade with the taper using adjustment casing 3
Blade 1 and lasso 2, and are locked by the dimensional tolerance for adjusting 1 neck of blade using fastening nut 4, thus realize blade 1 and
Propeller hub is fixed, this connection type can effectively improve the fastness and reliability that blade 1 is connect with propeller hub.
In addition, lasso 2 is equipped with from axial to separate externally threaded one end close to its externally threaded one end in the present embodiment
The grooving of extension, the grooving are equipped at least two, and each grooving is circumferential uniformly distributed around lasso 2, and the setting of the structure is so that lasso 2
The internal diameter at end has mobile deformation space where external screw thread, to facilitate the fastness for connecting and further increasing connection.
In the present embodiment, the port side of 4 one end of fastening nut is equipped with the thrust retaining ring 41 turned down to its inside, and is installing
Under state, adjustment casing 3 one end and thrust retaining ring 41 far from limit pier nose are against to prevent from adjusting casing 3 in the course of work
Generate movement, it is ensured that the stability of set tubing 3 during the work time.And in order to further increase thrust retaining ring 41 and adjusting sleeve
The contact area of pipe 3, the present embodiment are provided with flanging at the outer bead of the bigger diameter end of adjustment casing 3.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (5)
1. a kind of variable-pitch propeller blade and propeller hub attachment device characterized by comprising blade (1) by connection component with
Propeller hub connection, the root end of the blade (1) include neck and the limit pier nose positioned at neck end point, and the propeller hub includes set
It encloses (2), the connection component includes adjustment casing (3) and fastening nut (4), in which:
Lasso (2) is internal and the limit stop ring (21) integrally formed with it is arranged between its both ends；Outside lasso (2) one end
Week is equipped with external screw thread；The outer diameter for adjusting casing (3) is incremented by successively from one end to its another extreme direction；Under installation condition, adjustment
Casing (3) is sleeved on the neck of blade (1), and the miner diameter end for adjusting casing (3) limits pier nose by lasso towards limit pier nose
(2) end where external screw thread is protruded into lasso (2) and with limit stop ring (21) against the inner wall of adjustment casing (3) and lasso (2)
Against fastening nut (4) is sleeved on the outside of lasso (2) and is threadedly coupled with the external screw thread on lasso (2).
2. variable-pitch propeller blade according to claim 1 and propeller hub attachment device, which is characterized in that lasso is set on (2)
Have from close to its externally threaded one end, to far from the axially extending grooving in externally threaded one end, the grooving is equipped at least two,
Each grooving is circumferentially uniformly distributed around lasso (2).
3. variable-pitch propeller blade according to claim 1 and propeller hub attachment device, which is characterized in that fastening nut (4)
The port side of one end is equipped with the thrust retaining ring (41) turned down to its inside, and in the mounted state, adjustment casing (3) is far from limit
One end of pier nose and thrust retaining ring (41) against.
4. variable-pitch propeller blade according to claim 3 and propeller hub attachment device, which is characterized in that adjustment casing (3)
Bigger diameter end outer bead at be equipped with flanging.
5. variable-pitch propeller blade described in any one of -4 and propeller hub attachment device according to claim 1, which is characterized in that limit
Position pier nose smoothly transits with neck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910426483.4A CN110127036A (en) | 2019-05-22 | 2019-05-22 | A kind of variable-pitch propeller blade and propeller hub attachment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910426483.4A CN110127036A (en) | 2019-05-22 | 2019-05-22 | A kind of variable-pitch propeller blade and propeller hub attachment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110127036A true CN110127036A (en) | 2019-08-16 |
Family
ID=67572077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910426483.4A Pending CN110127036A (en) | 2019-05-22 | 2019-05-22 | A kind of variable-pitch propeller blade and propeller hub attachment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110127036A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112478135A (en) * | 2020-12-03 | 2021-03-12 | 中国航天空气动力技术研究院 | Connecting structure of propeller blade and variable pitch device |
| CN112937837A (en) * | 2021-02-05 | 2021-06-11 | 安徽羲禾航空科技有限公司 | Variable pitch propeller |
| CN115609967A (en) * | 2022-12-12 | 2023-01-17 | 江苏新扬新材料股份有限公司 | Auxiliary tool for manufacturing composite material blade preform, blade root outer sleeve locking method and blade manufacturing process |
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|---|---|---|---|---|
| GB381919A (en) * | 1931-07-03 | 1932-10-03 | Fairey Aviat Co Ltd | Improvements in or relating to variable pitch propellers |
| GB625155A (en) * | 1943-04-14 | 1949-06-22 | Clifford Russell Gaskell | Improvements in the retention of screw propeller blades in the propeller hub |
| GB1130835A (en) * | 1967-05-17 | 1968-10-16 | Parker Hannifin Corp | A nut and ferrule assembly for a flareless tube coupling |
| US20060091672A1 (en) * | 2002-07-09 | 2006-05-04 | Ryo Matsuhashi | Pipe joint |
| CN101038056A (en) * | 2006-03-13 | 2007-09-19 | 株式会社电装 | Pipe joint |
| EP2402246A1 (en) * | 2010-06-29 | 2012-01-04 | Brandenburgische Technische Universität Cottbus | Propeller blade bearing |
| CN102806994A (en) * | 2011-05-31 | 2012-12-05 | 王略 | Ultra-light single-person deceleration tilting type coaxial helicopter |
| CN106275422A (en) * | 2016-09-08 | 2017-01-04 | 南京航空航天大学 | A kind of variable speed rigid rotor aircraft propeller hub |
| CN205872441U (en) * | 2016-07-18 | 2017-01-11 | 四川傲势乐翼科技有限公司 | Variable -pitch propeller oar |
| CN106347634A (en) * | 2015-07-13 | 2017-01-25 | 通用电气航空系统有限责任公司 | Hub assembly and propeller assemblies |
| CN106741825A (en) * | 2016-11-21 | 2017-05-31 | 西安三翼航空科技有限公司 | A kind of six rotor unmanned aircrafts |
| CN109703752A (en) * | 2019-02-22 | 2019-05-03 | 一飞智控(天津)科技有限公司 | DCB Specimen unmanned plane |
| CN210027882U (en) * | 2019-05-22 | 2020-02-07 | 安徽卓尔航空科技有限公司 | Variable pitch propeller blade and propeller hub connecting device |
-
2019
- 2019-05-22 CN CN201910426483.4A patent/CN110127036A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB381919A (en) * | 1931-07-03 | 1932-10-03 | Fairey Aviat Co Ltd | Improvements in or relating to variable pitch propellers |
| GB625155A (en) * | 1943-04-14 | 1949-06-22 | Clifford Russell Gaskell | Improvements in the retention of screw propeller blades in the propeller hub |
| GB1130835A (en) * | 1967-05-17 | 1968-10-16 | Parker Hannifin Corp | A nut and ferrule assembly for a flareless tube coupling |
| US20060091672A1 (en) * | 2002-07-09 | 2006-05-04 | Ryo Matsuhashi | Pipe joint |
| CN101038056A (en) * | 2006-03-13 | 2007-09-19 | 株式会社电装 | Pipe joint |
| EP2402246A1 (en) * | 2010-06-29 | 2012-01-04 | Brandenburgische Technische Universität Cottbus | Propeller blade bearing |
| CN102806994A (en) * | 2011-05-31 | 2012-12-05 | 王略 | Ultra-light single-person deceleration tilting type coaxial helicopter |
| CN106347634A (en) * | 2015-07-13 | 2017-01-25 | 通用电气航空系统有限责任公司 | Hub assembly and propeller assemblies |
| CN205872441U (en) * | 2016-07-18 | 2017-01-11 | 四川傲势乐翼科技有限公司 | Variable -pitch propeller oar |
| CN106275422A (en) * | 2016-09-08 | 2017-01-04 | 南京航空航天大学 | A kind of variable speed rigid rotor aircraft propeller hub |
| CN106741825A (en) * | 2016-11-21 | 2017-05-31 | 西安三翼航空科技有限公司 | A kind of six rotor unmanned aircrafts |
| CN109703752A (en) * | 2019-02-22 | 2019-05-03 | 一飞智控(天津)科技有限公司 | DCB Specimen unmanned plane |
| CN210027882U (en) * | 2019-05-22 | 2020-02-07 | 安徽卓尔航空科技有限公司 | Variable pitch propeller blade and propeller hub connecting device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112478135A (en) * | 2020-12-03 | 2021-03-12 | 中国航天空气动力技术研究院 | Connecting structure of propeller blade and variable pitch device |
| CN112937837A (en) * | 2021-02-05 | 2021-06-11 | 安徽羲禾航空科技有限公司 | Variable pitch propeller |
| CN112937837B (en) * | 2021-02-05 | 2024-01-05 | 安徽羲禾航空科技有限公司 | Pitch-variable propeller |
| CN115609967A (en) * | 2022-12-12 | 2023-01-17 | 江苏新扬新材料股份有限公司 | Auxiliary tool for manufacturing composite material blade preform, blade root outer sleeve locking method and blade manufacturing process |
| CN115609967B (en) * | 2022-12-12 | 2023-07-21 | 江苏新扬新材料股份有限公司 | Composite blade preform tool, blade root jacket locking method and blade preparation process |
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