CN105947182A - Foldable propeller and aircraft - Google Patents
Foldable propeller and aircraft Download PDFInfo
- Publication number
- CN105947182A CN105947182A CN201610354136.1A CN201610354136A CN105947182A CN 105947182 A CN105947182 A CN 105947182A CN 201610354136 A CN201610354136 A CN 201610354136A CN 105947182 A CN105947182 A CN 105947182A
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- CN
- China
- Prior art keywords
- blade
- propeller
- actuator
- sub
- collapsible
- 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.)
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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
- B64C11/20—Constructional features
- B64C11/28—Collapsible or foldable blades
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transmission Devices (AREA)
- Gears, Cams (AREA)
Abstract
The invention relates to a foldable propeller and an aircraft. The foldable propeller comprises a propeller hub, propeller blades and n driving elements, wherein the propeller blades are connected onto the propeller hub; the driving elements are made of shape memory alloy; the propeller blades comprise m sub propeller blades which are sequentially hinged; one end of the i-th driving element is connected with the j-th sub propeller blade; the other end of the i-th driving element is connected with the (j+1)th sub propeller blade; the i is an integer from 1 to n, and the j is an integer from 1 to m; and the j-th sub propeller blade is driven to do relative rotation relative to the (j+1)th sub propeller blade by the conversion of the driving elements between the martensite state and the austenite state. The shapes of the driving elements in the martensite state and the austenite state are preset; when the temperature change is reduced, a preset value is reached; at the moment, the memory alloy deforms; the driving elements can further deform; the propeller blades are driven to be unfolded; the addition of a power source is not needed; only the temperature needs to reach the preset martensite state temperature of the driving elements; in addition, each propeller blade can be folded and unfolded; and the occupied space of the propeller in a non-use state is reduced.
Description
Technical field
The present invention relates to the propeller field used on aircraft, specifically refer to a kind of collapsible propeller, with
And this aircraft folding propeller is installed.
Background technology
Propeller size is the biggest, and rotating speed is the slowest, and efficiency is the highest, requires low to the strength of materials, close at air
Spend low in the case of, it is also possible to work.But size is the biggest, takes up room the biggest, especially exist
When aircraft lands on the ground, particularly highlight it and take up room；Especially propelling propeller, propeller hub
Being horizontally disposed with, blade is not sent out and is done greatly.
Chinese patent foldable propeller, application number: 201410127018.8, disclose a kind of folding
Formula propeller, has left blade, right blade, upper oar lid, lower oar lid, the installation end of left blade and upper oar
Lid, lower oar lid are articulated and connected, and the installation end of right blade is articulated and connected with upper oar lid, lower oar lid, upper oar lid,
The pars intermedia of lower oar lid is respectively equipped with horizontal connecting rod, and the middle part of horizontal connecting rod has motor shaft installing hole.This
The die manufacturing cost of invention is low.This propeller blade is collapsible.But the size after it folds is only
Under use state 1/2, when paddle size is bigger, still takies bigger space；And it folds
Power from motor, the most additionally increased a motor, added the weight of aircraft, wave
Take resource.
Summary of the invention
The technical problem to be solved be to provide one need not additionally to increase power source can be real
The Automatic-expanding of existing propeller and folding, and the collapsible propeller of one that volume after folding is little.
The technical scheme is that a kind of collapsible propeller, including oar
Hub, the blade being connected on described propeller hub and n the actuator being made up of marmem, wherein n
Take positive integer；Described blade includes the most hinged m sub-blade, wherein m=n+1；I-th actuator
One end blade with jth be connected, the other end blade with jth+1 of described i-th actuator is connected,
The value of i is 1 to be 1 to m to the value of n, j；The change of described actuator place ambient temperature makes institute
State actuator produce deformation and then drive the sub-blade of described jth to rotate relative to the described sub-blade of jth+1.
The invention has the beneficial effects as follows: preset geneva figure and the shape of austenite state of actuator, work as temperature
Degree change reduces, and reaches default value, and now memory conjunction deforms upon, and then actuator can deform upon,
Drive the expansion of blade；Need not increase power source, it is only necessary to temperature reaches the martensite that actuator is preset
The temperature of state；And each blade can fold and launch, reduce spiral shell under non-working condition
Taking up room of rotation oar.
On the basis of technique scheme, the present invention can also do following improvement.
Further, the conversion between geneva figure and austenite state of the described actuator drives described jth
Blade rotates relative to the described sub-blade of jth+1.
Further, also include that gear and tooth bar, described gear are engaged with described tooth bar；Described tooth bar slides
Being connected on the sub-blade of described jth, described gear is fixedly connected on described j+1 blade；Described
The other end of i actuator is fixing with described tooth bar to be connected.
The beneficial effect using above-mentioned further scheme is to provide another kind of feasible scheme, i.e. by driving
Moving part drives tooth bar to slide on the sub-blade of jth, the rotation of driven gear, and then drives the sub-oar of jth+1
The rotation of leaf, and then realize folding and the expansion of blade.
Further, when collapsible propeller is in folded state, described actuator is in austenite state；
When collapsible propeller is in deployed condition, described actuator is in geneva figure.
Use above-mentioned further scheme to provide the benefit that, due to propeller in a state of use, be substantially
Being in high aerial, the temperature in high-altitude is relatively low, and the low-temperature phase of actuator is martensite, therefore by propeller
Deployed condition setting corresponding with geneva figure.
Further, described actuator is that shape-memory alloy wire, shape-memory alloy rod or shape memory close
Gold spring.
Further, described actuator has double-pass memory effect.
The technical problem to be solved be to provide one need not additionally to increase power source can be real
The Automatic-expanding of existing propeller and folding, and a kind of aircraft that volume after folding is little.
The technical scheme is that a kind of aircraft, on described aircraft
The collapsible propeller of one as described in any of the above-described technical scheme is installed.
Beneficial effects of the present invention is identical, at this no longer with the beneficial effect of above-mentioned a kind of collapsible propeller
Repeat.
Further, described aircraft is dirigible.
Accompanying drawing explanation
Fig. 1 is the schematic diagram after the first part-structure folding of a kind of collapsible propeller of the present invention；
Fig. 2 is the schematic diagram after the first part-structure expansion of a kind of collapsible propeller of the present invention；
Fig. 3 is the schematic diagram after the second part-structure folding of a kind of collapsible propeller of the present invention；
Fig. 4 is the schematic diagram after the second part-structure expansion of a kind of collapsible propeller of the present invention；
Fig. 5 is the schematic diagram after the third part-structure folding of a kind of collapsible propeller of the present invention；
Fig. 6 is the schematic diagram after the third part-structure expansion of a kind of collapsible propeller of the present invention.
In accompanying drawing, the list of parts representated by each label is as follows:
1, actuator, the 2, first sub-blade, the 3, second sub-blade, 4, gear, 5, tooth bar.
Detailed description of the invention
Being described principle and the feature of the present invention below in conjunction with accompanying drawing, example is served only for explaining this
Invention, is not intended to limit the scope of the present invention.
My curved-surface structure of blade in actual use, therefore can not be the heaviest by the sub-blade after folding
Close；But precisely due to incomplete folding, it is also possible to make propeller can also work in a folded configuration.
Curved surface is not embodied in the structural representation of Fig. 1 to Fig. 6.
Embodiment one
As shown in Figures 1 to 6, disclose a kind of collapsible propeller, including propeller hub, be connected to propeller hub
On blade and the actuator 1 be made up of marmem of n, wherein n takes positive integer；Blade bag
Include the most hinged m sub-blade, wherein m=n+1；One end of i-th actuator 1 and the sub-blade of jth
Connecting, the other end of the i-th actuator blade with jth+1 is connected, and the value of i is 1 taking to n, j
Value is 1 to m；The actuator 1 conversion between geneva figure and austenite state drives jth sub-blade phase
Blade for jth+1 relatively rotates.The deformation utilizing actuator 1 drives expansion and the folding of paddle.
In yet another embodiment, also including gear 4 and tooth bar 5, gear 4 is engaged with tooth bar 5；Tooth
Bar 5 is slidably connected on the sub-blade of jth, and gear 4 is fixedly connected on j+1 blade；I-th drives
The other end of moving part is fixing with tooth bar 5 to be connected.
When collapsible propeller is in folded state, actuator 1 is in austenite state；At collapsible spiral shell
When rotation oar is in deployed condition, actuator 1 is in geneva figure.
In actual applications, actuator 1 is shape-memory alloy wire, actuator silk or marmem
Spring.Actuator 1 has double-pass memory effect.
The collapsible propeller using the present invention can realize being manufactured into the length of run of blade very big, can
With more than 30 meters.The material of actuator 1 can be selected for Au-Cd, Ag-Cd, Cu-Zn, Cu-Zn-Al,
Cu-Zn-Sn、Cu-Zn-Si、Cu-Sn、Cu-Zn-Ga、In-Ti、Au-Cu-Zn、NiAl、Fe-Pt、
Ti-Ni, Ti-Ni-Pd, Ti-Nb, U-Nb or Fe-Mn-Si alloy.According to the actual requirements, Ke Yi
The surface of blade and/or the surface dress matel coated coating of actuator.
Owing to paddle disclosed by the invention can make multistage, i.e. comprise many sub-paddles；But it is adjacent
The annexation of two sub-paddles is identical, just carries out in the case of only two blades in detail below
Explanation.
As illustrated in figs. 1 and 2, one end of the first sub-blade 2 is hinged with one end of the second sub-blade 3,
Realize this hinged bearing pin that can pass through to be connected one end of one end of the first sub-blade 2 with the second sub-blade 3
Connect.One end of the actuator 1 of I shape is fixed on the first sub-blade 2, and another of this actuator 1
End is fixed on the second sub-blade 3；After reaching preset temperature, the actuator 1 of I shape produces shape,
Become L-shaped, and driven the second sub-blade 3 to rotate around bearing pin, launch blade.When needs are by blade
During folding, it is only necessary to the temperature of actuator 1 is heated to preset temperature, actuator 1 deforms,
Blade can be driven to fold.
As described in fig. 3 and fig. 4, one end of the first sub-blade 2 is hinged with one end of the second sub-blade 3,
Realize this hinged bearing pin that can pass through to be connected one end of one end of the first sub-blade 2 with the second sub-blade 3
Connect.One end of the actuator 1 of L-shaped is fixed on the first sub-blade 2, and another of this actuator 1
End is fixed on the second sub-blade 3；After reaching preset temperature, the actuator 1 of L-shaped produces shape,
Become I shape, and driven the second sub-blade 3 to rotate around bearing pin, launch blade.When needs are by blade
During folding, it is only necessary to the temperature of actuator 1 is heated to preset temperature, actuator 1 deforms,
Blade can be driven to fold.
As described in the fig 5 and 6, one end of the first sub-blade 2 is hinged with one end of the second sub-blade 3,
Realize this hinged bearing pin that can pass through to be connected one end of one end of the first sub-blade 2 with the second sub-blade 3
Connect.
First sub-blade 2 is provided with a chute, and a tooth bar 5, tooth bar 5 are set in this chute
It is slidably connected in chute；Gear 4 is set on bearing pin, and fixing with the second sub-blade 3 is connected；Tooth
Bar 5 is mutually twisted with gear 4.
One end of actuator 1 is fixing with tooth bar 5 to be connected, and the other end is fixed on the first sub-blade 2.
After reaching preset temperature, actuator 1 produces shape, and band carry-over bar 5 slides in chute, enters
And driving the rotation of gear 4, final realization drives the second sub-blade 3 to rotate around bearing pin, launches blade.
When blade is folded by needs, it is only necessary to the temperature of actuator 1 is heated to preset temperature, drive
Part 1 deforms, and blade can be driven to fold.
The shape of actuator 1 is not limited to the shape in above-described embodiment, actually used in can be according to feelings
Condition is specifically arranged.
There is the connection of two or more blades and launch identical with such scheme with folded situation,
This is not repeated explanation.
Embodiment two
A kind of aircraft, aircraft is provided with the one as described in technical scheme arbitrary in embodiment one can
Fold propeller.
Embodiment three
A kind of dirigible, dirigible is provided with the one as described in technical scheme arbitrary in embodiment one collapsible
Propeller.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all in the present invention
Spirit and principle within, any modification, equivalent substitution and improvement etc. made, should be included in this
Within bright protection domain.
Claims (8)
1. a collapsible propeller, it is characterised in that include propeller hub, be connected on described propeller hub
Blade and n the actuator (1) being made up of marmem, wherein n takes positive integer；
Described blade includes the most hinged m sub-blade, wherein m=n+1；One end of i-th actuator
Blade with jth is connected, and the other end blade with jth+1 of described i-th actuator is connected, and i takes
Value is 1 to be 1 to m to the value of n, j；The change of described actuator (1) place ambient temperature makes described
Actuator (1) produces deformation and then drives the sub-blade of described jth to rotate relative to the described sub-blade of jth+1.
A kind of collapsible propeller, it is characterised in that described actuator
(1) conversion between geneva figure and austenite state drives the sub-blade of described jth relative to described the
Relatively rotating of j+1 blade.
A kind of collapsible propeller, it is characterised in that also include gear
(4) and tooth bar (5), described gear (4) is engaged with described tooth bar (5)；Described tooth bar (5) is slidably connected at
On the sub-blade of described jth, described gear (4) is fixedly connected on described j+1 blade；Described i-th
The other end of actuator is fixing with described tooth bar (5) to be connected.
4. according to collapsible propeller a kind of described in any one of claims 1 to 3, it is characterised in that
When collapsible propeller is in folded state, described actuator (1) is in austenite state；Collapsible
When propeller is in deployed condition, described actuator (1) is in geneva figure.
5. according to collapsible propeller a kind of described in any one of claims 1 to 3, it is characterised in that
Described actuator (1) is shape-memory alloy wire, shape-memory alloy rod or shape memory alloy spring.
6. according to collapsible propeller a kind of described in any one of claims 1 to 3, it is characterised in that
Described actuator (1) has double-pass memory effect.
7. an aircraft, it is characterised in that install just like claim 1 to 6 on described aircraft
The collapsible propeller of one described in any one.
A kind of aircraft, it is characterised in that described aircraft is dirigible.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610354136.1A CN105947182B (en) | 2016-05-25 | 2016-05-25 | A kind of foldable propeller and aircraft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610354136.1A CN105947182B (en) | 2016-05-25 | 2016-05-25 | A kind of foldable propeller and aircraft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105947182A true CN105947182A (en) | 2016-09-21 |
| CN105947182B CN105947182B (en) | 2019-02-19 |
Family
ID=56909808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610354136.1A Active CN105947182B (en) | 2016-05-25 | 2016-05-25 | A kind of foldable propeller and aircraft |
Country Status (1)
| Country | Link |
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| CN (1) | CN105947182B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106741909A (en) * | 2016-11-29 | 2017-05-31 | 北京华信智航科技有限公司 | A kind of co-axial contra rotating propeller of horizontal folding |
| CN107891968A (en) * | 2017-12-19 | 2018-04-10 | 深圳市道通智能航空技术有限公司 | One kind folds propeller, Power Component and unmanned plane |
| CN109345958A (en) * | 2018-09-25 | 2019-02-15 | 武汉华星光电半导体显示技术有限公司 | Cover board and flexible display screen for flexible display screen |
| CN112607004A (en) * | 2020-12-26 | 2021-04-06 | 浙江大学 | Transversely-folded propeller |
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| DE4119810A1 (en) * | 1991-06-15 | 1992-12-17 | Stemme Gmbh & Co Kg | Aircraft propeller with foldable blades - has variable blade adjustment angle with link between outer linkage positions and propeller drive shaft |
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| DE4119810A1 (en) * | 1991-06-15 | 1992-12-17 | Stemme Gmbh & Co Kg | Aircraft propeller with foldable blades - has variable blade adjustment angle with link between outer linkage positions and propeller drive shaft |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106741909A (en) * | 2016-11-29 | 2017-05-31 | 北京华信智航科技有限公司 | A kind of co-axial contra rotating propeller of horizontal folding |
| CN107891968A (en) * | 2017-12-19 | 2018-04-10 | 深圳市道通智能航空技术有限公司 | One kind folds propeller, Power Component and unmanned plane |
| CN107891968B (en) * | 2017-12-19 | 2024-06-07 | 深圳市道通智能航空技术股份有限公司 | Folding screw, power component and unmanned aerial vehicle |
| CN109345958A (en) * | 2018-09-25 | 2019-02-15 | 武汉华星光电半导体显示技术有限公司 | Cover board and flexible display screen for flexible display screen |
| US10893622B2 (en) | 2018-09-25 | 2021-01-12 | Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | Cover plate for flexible display screen and flexible display screen |
| CN112607004A (en) * | 2020-12-26 | 2021-04-06 | 浙江大学 | Transversely-folded propeller |
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|---|---|
| CN105947182B (en) | 2019-02-19 |
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