CN205952313U - Pitch -changing mechanism of screw and assembly device's aircraft - Google Patents
Pitch -changing mechanism of screw and assembly device's aircraft Download PDFInfo
- Publication number
- CN205952313U CN205952313U CN201620593527.4U CN201620593527U CN205952313U CN 205952313 U CN205952313 U CN 205952313U CN 201620593527 U CN201620593527 U CN 201620593527U CN 205952313 U CN205952313 U CN 205952313U
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- China
- Prior art keywords
- propeller hub
- pitch
- propeller
- changing mechanism
- blade root
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Abstract
The utility model provides a pitch -changing mechanism of screw and assembly device's aircraft, pitch -changing mechanism can implement screw displacement function under the circumstances that flies an accuse control motor (6) rotational speed. When the screw was rotatory, the little angle of attack of screw started, because the action of gravity of aircraft, pitch -changing mechanism is overcome in advance to the lift of screw vacuum power or spring tension along center pin (9) upwards or slide forward, stir groove (10) simultaneously and just stir bumping post (8) and make blade roots (2) rotate, make paddle (1) angle of attack grow, make screw lift increase and drive the aircraft and take off.
Description
Technical field
The present invention relates to a kind of aircraft and propeller, particularly to a kind of pitch-changing mechanism that can make propeller automatic adjustable-pitch
Including propeller and the aircraft assembling this device.
Background technology
It is known that Multi-axis aircraft wind loading rating be far below helicopter, helicopter use feather propeller,
It is the pitch lift fuselage by changing propeller, and Multi-axis aircraft uses fixing propeller, so change can only be leaned on
Motor speed lifting aircraft, if although feather propeller is attached on Multi-axis aircraft can improve wind resistance power by
Also a lot of unstable factors can be increased in feather propeller arrangement complexity to aircraft.
Content of the invention
Present invention aim to address the deficiency of above-mentioned technology, provide a kind of structure simply can make propeller automatic adjustable-pitch
Pitch-changing mechanism include propeller with assemble this device aircraft.
For achieving the above object, the present invention employs the following technical solutions.
Described pitch-changing mechanism relies primarily on the lift change pitch that blade produces when rotated.
Described pitch-changing mechanism is made up of central shaft, propeller hub, blade root and bumping post.
Described central shaft is assemblied in or designs on the flange that propeller is linked and packed with rotor or power transmission shaft,
It is provided with slip plane on center shaft and stir groove.Described central shaft assembling is injected in propeller hub, with propeller hub sliding fit, central shaft
Slide up and down along axle for propeller hub, for driving propeller hub to rotate, described propeller hub can only slide and can not turn around central shaft along central shaft
Dynamic.
Described propeller hub is used for assembling blade root, is provided with for the slide opening of assembly center axle and for assembling blade root on propeller hub
Blade root swivelling chute, described propeller hub is easy to assemble the molectron that blade root is designed as propeller hub and lower two parts of propeller hub.
Described blade root is the root of blade, is provided with limiting piston in one end of blade root or is equipped with bearing, limiting piston or
Bearing is used for the assembling of blade root and propeller hub, for rotation in propeller hub for the blade root.The described blade root other end is linked and packed with blade
Or with blade be one-piece parts.Bumping post hole is provided with blade root, bumping post hole is used for assembling bumping post, in central shaft, propeller hub and oar
The bumping post head being assemblied in when root is assembled together in bumping post hole is appropriately interposed in be stirred in groove, and blade root is contacted with central shaft.
Stir the glide direction that groove can control bumping post, stirring groove when propeller hub slides along central shaft and just stirring bumping post makes blade root
Rotating, so that its angle of attack is changed thus driving blade to rotate by blade root.Smoothly stir bumping post for enabling to stir groove, described stir
Groove is designed as becoming to have angle skewed slot with central shaft.
Described propeller hub and blade root rely primarily on lift or the pulling force of propeller along central axial upper or forward slip；Described oar
Hub is along central axial lower or slide inwards dependence vacuum power or spring part tension force.
Preferably.
Described propeller hub relies on vacuum power along slip central axial lower or inwards.
Described central shaft is provided with central blind hole, the tight sliding fit of slide opening on described central shaft and propeller hub, on center shaft
It is also equipped with sealing ring, the blind hole just shape on the slide opening on the propeller hub when propeller hub is along central axial upper or forward slip and central shaft
Become vacuum chamber, when the vacuum power in vacuum chamber is more than propeller lift, propeller hub is connected in the presence of vacuum power along central axial
Lower or slide inwards, stirring groove simultaneously and just stirring bumping post makes blade root rotate, so that the blade angle of attack is diminished.Upper propeller hub is additionally provided with list
To valve, the aerofluxuss when effect of described check valve is assembled for reeve in the slide opening on central shaft up propeller hub, for from vacuum
Indoor extraction air.
Preferably.
Described propeller hub relies on spring part tension force along slip central axial lower or inwards.
Described be equipped with spring part on center shaft, central shaft is withstood in one end of spring part, and the other end withstands propeller hub, described
The effect of spring part is used for propeller hub and slides down or inwards along central axial.When lift is more than spring part tension force, propeller hub is along center
In axial direction or forward slip；When lift is less than spring part tension force, propeller hub is along central axial lower or front slide inwards.
The present invention separately provides a kind of aircraft, and the propeller of described aircraft is equipped with above-mentioned pitch-changing mechanism, described displacement
Mechanism can implement Propeller variable pitch function in the case of a winged control controlled motor rotating speed.During propeller rotation, propeller is little to meet
Angle starts, and due to the action of gravity of aircraft, the lift of propeller overcomes vacuum power described in pitch-changing mechanism or spring to open in advance
Along central axial upper or forward slip, stirring groove simultaneously and just stirring bumping post makes blade root rotate, makes the blade angle of attack become big power, makes spiral
Oar lift increases and drives aircraft takeoff.
Due to effect of inertia after described normal vehicle operation, the vacuum power described in pitch-changing mechanism or spring tension are greater than
The lift of propeller or pulling force, so propeller hub along central axial lower or slide inwards, is stirred groove and is just stirred bumping post and makes blade root simultaneously
Rotate, so that the blade angle of attack is diminished.
When being acted on by external force in described normal vehicle operation, pitch-changing mechanism can be controlled and balance, External force interference aircraft
Two active forces are had, one is thrust upwards or forward, and one is downward or pulling force backward during balance.Overcome upwards or
During thrust forward, the vacuum power described in pitch-changing mechanism or spring tension just control propeller hub along central axial lower or slide inwards,
Stir simultaneously groove just stir bumping post make blade root rotate, so that the blade angle of attack is diminished；When overcoming pulling force downwards or backward, displacement machine
Vacuum power described in structure or spring tension just control propeller hub along central axial upper or forward slip, stir groove simultaneously and just stir bumping post
So that blade root is rotated, make the blade angle of attack become big.
It is an advantage of the current invention that.
1st, structure is simple.
2nd, reduce motor load, using electricity wisely, extend continuation of the journey.
3rd, automatic adjustable-pitch, no any displacement drive mechanism.
4th, sturdy durable.
5th, change conveniently.
6th, improve wind resistance.
8th, it is well suited for old machine constant pitch airscrew upgrading and become variable-pitch propeller.
Brief description
With embodiment, the present invention is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is the solid of the propeller hub of pitch-changing mechanism of the present invention along central axial slip dependence spring part tension force down or inwards
Decomposing schematic representation.
Fig. 2 is the section of the propeller hub of pitch-changing mechanism of the present invention along central axial slip dependence spring part tension force down or inwards
Schematic diagram.
Fig. 3 is the schematic perspective view of the blade root in pitch-changing mechanism of the present invention.
Fig. 4 is the schematic perspective view of the central shaft in pitch-changing mechanism of the present invention.
Fig. 5 is that the present invention is equipped with the pitch-changing mechanism that propeller hub relies on spring part tension force along slip central axial lower or inwards
Schematic perspective view before the unchanged angle of attack being assembled together with motor.
Fig. 6 is that the present invention is equipped with the pitch-changing mechanism that propeller hub relies on spring part tension force along slip central axial lower or inwards
The schematic perspective view becoming after High Angle of Attack being assembled together with motor.
Fig. 7 is the stereo decomposing of the propeller hub of pitch-changing mechanism of the present invention along central axial slip dependence vacuum power down or inwards
Schematic diagram.
Fig. 8 is that the propeller hub of pitch-changing mechanism of the present invention relies on the section of vacuum power to illustrate along slip central axial lower or inwards
Figure.
Fig. 9 is the schematic perspective view that the central shaft in pitch-changing mechanism of the present invention is integrated with assembly flange design.
Figure 10 is the schematic perspective view of the upper propeller hub in pitch-changing mechanism of the present invention.
Figure 11 be the present invention be equipped with propeller hub along slip central axial lower or inwards rely on the pitch-changing mechanism of vacuum power with
Schematic diagram before the unchanged angle of attack that motor is assembled together.
Figure 12 be the present invention be equipped with propeller hub along slip central axial lower or inwards rely on the pitch-changing mechanism of vacuum power with
Schematic diagram after the change High Angle of Attack that motor is assembled together.
In figure, blade（1）, blade root（2）, upper propeller hub（3）, lower propeller hub（4）, flange（5）, motor（6）, shelves post holes（7）, shelves
Post（8）, central shaft（9）, stir groove（10）, spring part（11）, piston（12）, sealing ring（13）, unidirectional hole（14）, slide opening
（15）, blind hole（16）.
Specific embodiment
Described pitch-changing mechanism relies primarily on blade（1）The lift producing when rotated changes pitch.
Described pitch-changing mechanism is by central shaft（9）, propeller hub, blade root（2）With bumping post（8）Composition.
Described central shaft（9）It is assemblied in or designs in propeller and motor（6）Rotor or power transmission shaft are linked and packed
Flange（5）On, in central shaft（9）It is provided with slip plane and stir groove（10）.Described central shaft（9）Assembling is injected in propeller hub
In, with propeller hub sliding fit, central shaft（9）Slide up and down along axle for propeller hub, for driving propeller hub to rotate, described propeller hub can only edge
Central shaft（9）Slip can not be around central shaft（9）Rotate.
Described propeller hub is used for assembling blade root（2）, propeller hub is provided with for assembly center axle（9）Slide opening（15）Be used for
Assembling blade root（2）Blade root（2）Swivelling chute, described propeller hub is easy to assemble blade root（2）It is designed as propeller hub（3）With lower propeller hub（4）
The molectron of two parts.
Described blade root（2）It is blade（1）Root, in blade root（2）One end be provided with limiting piston（12）Or it is equipped with axle
Hold, limiting piston（12）Or bearing is used for blade root（2）With the assembling of propeller hub, for blade root（2）Rotation in propeller hub.Described oar
Root（2）The other end and blade（1）It is linked and packed or and blade（1）For one-piece parts.In blade root（2）It is provided with bumping post（8）Hole
（7）, bumping post（8）Hole（7）For assembling bumping post（8）, in central shaft（9）, propeller hub and blade root（2）It is assemblied in gear when being assembled together
Post（8）Hole（7）In bumping post（8）Head is appropriately interposed in stirs groove（10）In, blade root（2）With central shaft（9）Contact.
Stir groove（10）Bumping post can be controlled（8）Glide direction, in propeller hub along central shaft（9）Groove is stirred during slip（10）Just
Stir bumping post（8）Make blade root（2）Rotate, thus by blade root（2）Drive blade（1）Rotation makes its angle of attack change.For making to dial
Dynamic groove（10）Bumping post can smoothly be stirred（8）, described stir groove（10）It is designed as and central shaft（9）Become to have angle skewed slot.
Described propeller hub and blade root（2）Along central shaft（9）Upwards or forward slip relies primarily on lift or the pulling force of propeller；
Described propeller hub is along central shaft（9）Slide downwards or inwards and rely on vacuum power or spring part（11）Tension force.
Preferably.
Described propeller hub is along central shaft（9）Slip downwards or inwards relies on vacuum power.
Described central shaft（9）It is provided with central blind hole（16）, described central shaft（9）With the slide opening on propeller hub（15）Closely slide fit
Close, in central shaft（9）On be also equipped with sealing ring（13）, when propeller hub is along central shaft（9）Upwards or on propeller hub during forward slip
Slide opening（15）With central shaft（9）On blind hole（16）Just form vacuum chamber, when the vacuum power in vacuum chamber is more than propeller lift
When, propeller hub is connected in the presence of vacuum power along central shaft（9）Slide downwards or inwards, stir groove simultaneously（10）Just stir bumping post
（8）Make blade root（2）Rotate, make blade（1）The angle of attack diminishes.In upper propeller hub（3）On be additionally provided with check valve（14）, described check valve
（14）Effect be used for central shaft（9）Up propeller hub（3）On slide opening（15）The interior aerofluxuss injected during assembling, for from vacuum chamber
Interior extraction air.
Preferably.
Described propeller hub is along central shaft（9）Slip downwards or inwards relies on spring part（11）Tension force.
Described in central shaft（9）On be equipped with spring part（11）, spring part（11）One end withstand central shaft（9）, another
Propeller hub is withstood at end, described spring part（11）Effect be used for propeller hub along central shaft（9）Slide downwards or inwards.When lift is more than bullet
Spring part（11）During tension force, propeller hub is along central shaft（9）Upwards or forward slip；When lift is less than spring part（11）During tension force, propeller hub
Along central shaft（9）Downwards or inwards front slide.
The present invention separately provides a kind of aircraft, and the propeller of described aircraft is equipped with above-mentioned pitch-changing mechanism, described displacement
Mechanism can be in a winged control controlled motor（6）Implement Propeller variable pitch function in the case of rotating speed.During propeller rotation, propeller is little
The angle of attack starts, and due to the action of gravity of aircraft, the lift of propeller overcomes vacuum power or spring described in pitch-changing mechanism in advance
Tension force is along central shaft（9）Upwards or forward slip, stir groove simultaneously（10）Just stir bumping post（8）Make blade root（2）Rotate, make blade
（1）The angle of attack becomes big, so that propeller lift is increased and drives aircraft takeoff.
Due to effect of inertia after described normal vehicle operation, the vacuum power described in pitch-changing mechanism or spring tension are greater than
The lift of propeller or pulling force, so propeller hub is along central shaft（9）Slide downwards or inwards, stir groove simultaneously（10）Just stir bumping post
（8）Make blade root（2）Rotate, make blade（1）The angle of attack diminishes.
When being acted on by external force in described normal vehicle operation, pitch-changing mechanism can be controlled and balance, External force interference aircraft
Two active forces are had, one is thrust upwards or forward, and one is downward or pulling force backward during balance.Overcome upwards or
During thrust forward, the vacuum power described in pitch-changing mechanism or spring tension just control propeller hub along central shaft（9）Slide downwards or inwards
Dynamic, stir groove simultaneously（10）Just stir bumping post（8）Make blade root（2）Rotate, make blade（1）The angle of attack diminishes；Overcome downwards or to
During rear pulling force, the vacuum power described in pitch-changing mechanism or spring tension just control propeller hub along central shaft（9）Upwards or forward slip,
Stir groove simultaneously（10）Just stir bumping post（8）Make blade root（2）Rotate, make blade（1）The angle of attack becomes big.
Claims (9)
1. a kind of pitch-changing mechanism, including propeller it is characterised in that：Described pitch-changing mechanism relies primarily on blade and produces when rotated
Lift change pitch；
Described pitch-changing mechanism is made up of central shaft, propeller hub, blade root and bumping post；
Described central shaft is assemblied in or designs on the flange that propeller is linked and packed with rotor or power transmission shaft, in
Heart axle is provided with slip plane and stirs groove；The assembling of described central shaft is injected in propeller hub, and propeller hub sliding fit, and central shaft is used for
Propeller hub slides up and down along axle, and for driving propeller hub to rotate, described propeller hub can only slide along central shaft can not be around central axis；
Described propeller hub is used for assembling blade root, is provided with for the slide opening of assembly center axle and for assembling the blade root of blade root on propeller hub
Swivelling chute；
Described blade root is the root of blade, is provided with limiting piston in one end of blade root or is equipped with bearing, limiting piston or bearing
For the assembling of blade root and propeller hub, for rotation in propeller hub for the blade root；The described blade root other end and blade be linked and packed or with
Blade is one-piece parts；Bumping post hole is provided with blade root, bumping post hole is used for assembling bumping post, in central shaft, propeller hub and blade root dress
The bumping post head being assemblied in when fitting over together in bumping post hole is appropriately interposed in be stirred in groove, and blade root is contacted with central shaft；
Stir the glide direction that groove can control bumping post, stirring groove when propeller hub slides along central shaft and just stirring bumping post makes blade root turn
Dynamic, so that its angle of attack is changed thus driving blade to rotate by blade root；
Described propeller hub relies primarily on lift or the pulling force of propeller along central axial upper or forward slip, and described propeller hub is along central shaft
Slide downwards or inwards and rely on vacuum power or spring part tension force.
2. a kind of pitch-changing mechanism according to claim 1 it is characterised in that：Described propeller hub is easy to assembling blade root and is designed as
Propeller hub and the molectron of lower two parts of propeller hub.
3. a kind of pitch-changing mechanism according to claim 1 it is characterised in that：Described central shaft is provided with central blind hole, described
The tight sliding fit of slide opening on central shaft and propeller hub, is also equipped with sealing ring on center shaft.
4. a kind of pitch-changing mechanism according to claim 1 or 3 it is characterised in that：Described propeller hub along central axial lower or to
In slip rely on vacuum power, the blind hole on the slide opening on the propeller hub when propeller hub is along central axial upper or forward slip and central shaft
Just form vacuum chamber, when the vacuum power in vacuum chamber is more than propeller lift, propeller hub is connected in the presence of vacuum power along center
Axially lower or slide inwards, stirring groove simultaneously and just stirring bumping post makes blade root rotate, so that the blade angle of attack is diminished.
5. a kind of pitch-changing mechanism according to claim 1 or 3 it is characterised in that：Check valve, institute are additionally provided with upper propeller hub
The effect stating check valve is used for injecting aerofluxuss during assembling in slide opening up on propeller hub for the central shaft, for from vacuum interior extraction
Air.
6. a kind of pitch-changing mechanism according to claim 1 it is characterised in that：Described be equipped with spring part on center shaft,
Central shaft is withstood in one end of spring part, and the other end withstands propeller hub.
7. a kind of pitch-changing mechanism according to claim 1 or 6 it is characterised in that：Described propeller hub along central axial lower or to
In slip rely on spring part tension force, the effect of described spring part is used for propeller hub along central axial lower or slide inwards；Work as lift
During more than spring part tension force, propeller hub is along central axial upper or forward slip；When lift is less than spring part tension force, propeller hub is along center
Axial direction time or inwards front slide.
8. a kind of pitch-changing mechanism according to claim 1 it is characterised in that：Smoothly stir bumping post, institute for enabling to stir groove
State and stir groove and be designed as becoming to have angle skewed slot with central shaft.
9. a kind of be equipped with the automatic adjustable-pitch aircraft that claim wants the pitch-changing mechanism described in 1 to 8 any one, its feature exists
In：The propeller of described aircraft is equipped with above-mentioned pitch-changing mechanism, and described pitch-changing mechanism can be in a winged control controlled motor rotating speed
In the case of implement Propeller variable pitch function；During propeller rotation, propeller low incidence starts, due to the action of gravity of aircraft,
The lift of propeller overcomes vacuum power described in pitch-changing mechanism or spring tension in advance along central axial upper or forward slip, simultaneously
Stirring groove and just stirring bumping post makes blade root rotate, makes the blade angle of attack become big, so that propeller lift is increased and drives aircraft takeoff；
Due to effect of inertia after described normal vehicle operation, the vacuum power described in pitch-changing mechanism or spring tension are greater than spiral
The lift of oar or pulling force, thus propeller hub along central axial lower or slide inwards, stir simultaneously groove just stir bumping post so that blade root is rotated,
The blade angle of attack is made to diminish；
When being acted on by external force in described normal vehicle operation, pitch-changing mechanism can be controlled and balance, and External force interference aircraft balances
When have two active forces, one is thrust upwards or forward, and one is downward or pulling force backward；
When overcoming thrust upwards or forward, the vacuum power described in pitch-changing mechanism or spring tension just control propeller hub along central shaft
Slide downwards or inwards, stirring groove simultaneously and just stirring bumping post makes blade root rotate, so that the blade angle of attack is diminished；Overcoming downwards or backward
Pulling force when, the vacuum power described in pitch-changing mechanism or spring tension just control propeller hub along central axial upper or forward slip, simultaneously
Stirring groove and just stirring bumping post makes blade root rotate, makes the blade angle of attack become big.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620593527.4U CN205952313U (en) | 2016-06-17 | 2016-06-17 | Pitch -changing mechanism of screw and assembly device's aircraft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620593527.4U CN205952313U (en) | 2016-06-17 | 2016-06-17 | Pitch -changing mechanism of screw and assembly device's aircraft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205952313U true CN205952313U (en) | 2017-02-15 |
Family
ID=57968289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620593527.4U Expired - Fee Related CN205952313U (en) | 2016-06-17 | 2016-06-17 | Pitch -changing mechanism of screw and assembly device's aircraft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205952313U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109050884A (en) * | 2018-06-21 | 2018-12-21 | 深圳市龙云创新航空科技有限公司 | A kind of the proprotor head and unmanned plane of automatic adjustable-pitch |
| CN109278985A (en) * | 2018-11-20 | 2019-01-29 | 西安君晖航空科技有限公司 | A kind of variable propeller pitch device and its installation method |
-
2016
- 2016-06-17 CN CN201620593527.4U patent/CN205952313U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109050884A (en) * | 2018-06-21 | 2018-12-21 | 深圳市龙云创新航空科技有限公司 | A kind of the proprotor head and unmanned plane of automatic adjustable-pitch |
| CN109278985A (en) * | 2018-11-20 | 2019-01-29 | 西安君晖航空科技有限公司 | A kind of variable propeller pitch device and its installation method |
| CN109278985B (en) * | 2018-11-20 | 2023-09-29 | 西安君晖航空科技有限公司 | Pitch variable device and installation method thereof |
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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: 20170215 Termination date: 20180617 |