CN204297064U - A kind of variable-pitch propeller - Google Patents
A kind of variable-pitch propeller Download PDFInfo
- Publication number
- CN204297064U CN204297064U CN201420789016.0U CN201420789016U CN204297064U CN 204297064 U CN204297064 U CN 204297064U CN 201420789016 U CN201420789016 U CN 201420789016U CN 204297064 U CN204297064 U CN 204297064U
- Authority
- CN
- China
- Prior art keywords
- blade
- main shaft
- variable
- brushgear
- pitch propeller
- 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.)
- Withdrawn - After Issue
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A kind of variable-pitch propeller, belongs to technical field of aerospace, comprises main shaft, brushgear, wheel hub and be evenly distributed on rotating vane around wheel hub and identical with two that wheel hub is connected, three or four structures.The back segment of main shaft is connected with brushgear by bearing.The front end of main shaft is vertical with wheel hub to be connected.Each rotating vane comprises motor and blade.The output shaft of each motor and corresponding blade are fixed on the root of blade.Brushgear comprises support and several to brush.Often pair of brush comprises brush head and conducting ring.All motors are connected with brush with adopting electric wire between controller.Motor is controlled its running and has a rest to stop by controller, thus the angle of attack controlling blade does cyclically-varying.This variable-pitch propeller can produce lift and pulling force under the driving of active force and the control of controller simultaneously.This invention variable-pitch propeller is used on aircraft in pairs, and can be aircraft in the middle part of the leading edge that symmetry is arranged on the left and right wing of aircraft and provide lift and pulling force, efficiency is higher.
Description
Technical field
A kind of variable-pitch propeller, belongs to technical field of aerospace, particularly relates to a kind of variable-pitch propeller.
Background technology
Traditional aircraft screw Plane of rotation can only produce pulling force or thrust when laterally vertically arranging, can not produce lift; Lift can only be produced during the main rotor Plane of rotation level of traditional helicopter and can not produce thrust or pulling force.
Summary of the invention
The object of the invention is the above-mentioned deficiency overcoming existing aircraft screw and helicopter rotor, invent a kind of variable-pitch propeller that simultaneously can produce the power of orthogonal both direction.
A kind of variable-pitch propeller, comprises main shaft, brushgear, wheel hub and is evenly distributed on rotating vane around wheel hub and identical with two that wheel hub is connected, three or four structures.Main shaft vertical equity is arranged, the back segment of main shaft is connected in the centre bore of brushgear by bearing and brushgear, and main shaft can flexible rotating in the centre bore of brushgear.The rear end of main shaft is connected with active force.The center that be fixed on wheel hub vertical with wheel hub, front end of main shaft.Each rotating vane comprises motor and blade.The flat shape of blade is rectangular, and blade is rigidity, and the aerofoil profile of blade is flat pattern under the recessed or epirelief of epirelief.All motors are evenly connected in around wheel hub, and the output shaft of all motors is in same horizontal vertical guide, and main shaft is vertical with this vertical guide.The output shaft of each motor and corresponding blade are fixed on the root of blade, and the link position of the output shaft of motor and this blade is located substantially on 1/3rd places of the chord length of this blade.Brushgear comprises support and several to brush, and the logarithm of brush determines according to rotating vane number and motor, and if rotating vane is two, each motor has two power lines, and firm brush is four right.The often pair of brush comprises the brush head that is arranged on brushgear and is arranged on the conducting ring that main shaft slidingly contacts with brush head, and be insulation between each conducting ring, conducting ring adopts silver or copper material to make.All motors are connected with brush with adopting electric wire between controller.With equal live wire passage in main shaft in wheel hub, the connection wire between all motors and the conducting ring of brushgear passes through from cable channel.Motor adopts servomotor, is controlled its running and has a rest to stop, thus control the angle of attack of blade by controller.
The operation principle of this variable-pitch propeller is: arranged by the main shaft vertical equity of this variable-pitch propeller, the rear end of main shaft is connected active force, and the support of brushgear and the frame of main power source are connected.See from back to front, active force drive shaft is rotated counterclockwise, and the phase relation setting controller and main shaft makes each rotating vane run in the following manner:
If the original position of rotating vane is the below that rotating vane is in main shaft, the output shaft of motor is vertically arranged in immediately below main shaft, namely the output shaft of motor is in 6 o ' clock positions, for convenience of description, hour position residing for the output shaft of motor is also defined as the hour position residing for blade, namely now blade is in 6 o ' clock positions, control the position of output shaft of motor well by controller to make: the leading edge of blade is before right avertence, trailing edge is towards a left side, convex surface forward, the angle of attack of blade is α °, along with the rotation of main shaft, blade runs to 12 o ' clock positions by 6 o ' clock positions, the running of this half cycle, motor does not rotate, blade angle of attack under the locking of motor is constant, keep α °.Blade runs to the process at 11 o'clock from 12 o'clock, and controller controls electric machine rotation, makes the angle of attack of blade gradually become β ° by α °.Blade runs to the process at 5 o'clock from 11 o'clock, motor stalling and pin blade keep the angle of attack of blade be β ° constant.Finally, blade runs to the process of 6 from 5 o'clock, and controller controls motor reversal, makes the angle of attack of blade change back to α ° gradually by β °.Blade completes a swing circle, has got back to original position and has entered the next identical work period.α ° is a fixed angle between 4 ° ~ 10 °; β ° is a fixed angle between 84 ° ~ 90 °.
This screw rotates under the driving of active force and the control of controller, and the angle of attack of blade does periodically change, and on the right side of longitudinal vertical guide crossing main shaft, blade upwards determines the angle of attack and Low Angle Of Attack motion generation forward pulling force, the same constant pitch airscrew of effect; In the left side of longitudinal vertical guide of mistake main shaft, under blade large attack angle, clap the lift produced upwards.
This invention variable-pitch propeller is used on aircraft in pairs, can be aircraft and provide lift and pulling force in the middle part of the leading edge that symmetry is arranged on the left and right wing of aircraft.Active force inputs from the rear end of their main shaft, and the support of their brushgear is fixedly mounted on wing.Two variable-pitch propellers turn on the contrary, can offset rotating torque.
Accompanying drawing explanation
Fig. 1 is the schematic rear view of a kind of variable-pitch propeller of the present invention, and in figure, the output shaft of two motors is in same lateral horizontal position, and the angle of attack of the first blade is 86 °, and the angle of attack of the second blade is 5 °; Fig. 2 is that schematic diagram is looked on the right side of the first blade in Fig. 1; Fig. 3 is that schematic diagram is looked on a left side for the second blade in Fig. 1; Fig. 4 is the output shaft of a kind of variable-pitch propeller of the present invention two motors schematic top plan view when being in same lateral horizontal position; Fig. 5 is that schematic diagram is looked on the right side of the first blade in Fig. 4; Fig. 6 is that schematic diagram is looked on a left side for the second blade in Fig. 4; Fig. 7 is the rear apparent motion simplified schematic diagram of a kind of variable-pitch propeller of the present invention.
In figure, 1-main shaft; 2-wheel hub; 3-first motor, 31-first motor output shaft, the installation site of 311-first motor output shaft on the first blade; 4-second motor, 41-second motor output shaft, the installation site of 411-second motor output shaft on the second blade; 5-first blade, the leading edge of 51-first blade, the trailing edge of 52-first blade; 6-second blade, the leading edge of 61-second blade, the trailing edge of 62-second blade; 7-brushgear, the support of 71-brushgear; The direction of rotation instruction of 8-screw of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, 1 ~ 7 couple of the present invention is illustrated.
A kind of variable-pitch propeller, comprises main shaft 1, brushgear 7, wheel hub 2 and is evenly distributed on rotating vane around wheel hub 2 and identical with two structures that wheel hub 2 is connected.Main shaft 1 vertical equity is arranged, the back segment of main shaft 1 is connected in the centre bore of brushgear 7 by bearing and brushgear 7, and main shaft 1 can flexible rotating in the centre bore of brushgear 7.The rear end of main shaft 1 is connected with active force.The center that be fixed on wheel hub 2 vertical with wheel hub 2, front end of main shaft 1.First rotating vane comprises the first motor 3 and the first blade 5.Second rotating vane comprises the second motor 4 and the second blade 6.First blade 5 is identical with the second blade 6 structure, and their flat shape is rectangular, is rigidity, and aerofoil profile is flat pattern under the recessed or epirelief of epirelief.First motor 3 and the second motor 4 symmetry are connected in the left and right sides of wheel hub, and the output shaft of two motors is in same horizontal vertical guide, and main shaft 1 is vertical with this vertical guide.First motor output shaft 31 and the first blade 5 are fixed on the root of the first blade 5, and the link position of the first motor output shaft 31 and the first blade 5 is positioned at 1/3rd places of chord length.Second motor output shaft 41 and the second blade 6 are fixed on the root of the second blade 6, and the link position of the second motor output shaft 41 and the second blade 6 is positioned at 1/3rd places of chord length.Brushgear 7 comprises support 71 and four pairs of brushes.The often pair of brush comprises the brush head that is arranged on brushgear and is arranged on the conducting ring that main shaft 1 slidingly contacts with brush head, and be insulation between each conducting ring, conducting ring adopts silver or copper material to make.First motor 3 and the second motor 4 are connected with brush with adopting electric wire between controller.With equal live wire passage in main shaft 1 in wheel hub 2, the first motor 3 and the connection wire between the second motor 4 and the conducting ring of brushgear 7 pass through from cable channel.First motor 3 is identical with the second motor 4, all adopts servomotor, is controlled its running and has a rest to stop, thus control the angle of attack of the first blade 5 and the second blade 6 by controller.
The operation principle of this variable-pitch propeller is: arranged by main shaft 1 vertical equity of this variable-pitch propeller, the rear end of main shaft 1 is connected active force, and brushgear support 71 is connected with the frame of main power source.See from back to front, active force drive shaft 1 is rotated counterclockwise, and the phase relation setting controller and main shaft 1 makes two rotating vanes run all in the following manner, illustrates below for the first rotating vane:
If the original position of the first rotating vane is the below that the first rotating vane is in main shaft 1, first motor output shaft 31 is vertically arranged in immediately below main shaft 1, namely the first motor output shaft 31 is in 6 o ' clock positions, for convenience of description, hour position residing for first motor output shaft 31 is also defined as the hour position residing for the first blade 5, namely now the first blade 5 is in 6 o ' clock positions, control the position of the first motor output shaft 31 well by controller to make: the leading edge 51 of the first blade is before right avertence, trailing edge 52 is towards a left side, convex surface forward, the angle of attack of the first blade 5 is 5 °, along with the rotation of main shaft 1, first blade 5 runs to 12 o ' clock positions by 6 o ' clock positions, the running of this half cycle, first motor 3 does not rotate, first blade 5 angle of attack under the locking of the first motor 3 is constant, keep 5 °.First blade 5 runs to the process at 11 o'clock from 12 o'clock, controller controls the first motor 3 and rotates, and makes the angle of attack of the first blade 5 gradually become 86 ° by 5 °.First blade 5 runs to the process at 5 o'clock from 11 o'clock, the first motor 3 stall and pin the first blade 5 keep the angle of attack of the first blade be 86 ° constant.Finally, the first blade 5 runs to the process of 6 from 5 o'clock, and controller controls the first motor 5 and reverses, and makes the angle of attack of the first blade 5 change back to 5 ° gradually by 86 °.First blade 5 completes a swing circle, has got back to original position and has entered the next identical work period.
This screw rotates under the driving of active force and the control of controller, and the angle of attack of two blades does periodically change, and on the right side of longitudinal vertical guide crossing main shaft 1, two blades upwards determine the angle of attack and Low Angle Of Attack motion generation forward pulling force, the same constant pitch airscrew of effect; In the left side of longitudinal vertical guide of mistake main shaft 1, under two blade large attack angle, clap the lift produced upwards.
This invention variable-pitch propeller is used on aircraft in pairs, can be aircraft and provide lift and pulling force simultaneously in the middle part of the leading edge that symmetry is arranged on the left and right wing of aircraft.Active force inputs from the rear end of their main shaft, and the support of their brushgear is fixedly mounted on wing.Two variable-pitch propellers turn on the contrary, can offset rotating torque.
Claims (8)
1. a variable-pitch propeller, is characterized in that: comprise main shaft (1), brushgear (7), wheel hub (2) and be evenly distributed on rotating vane around wheel hub (2) and identical with two that wheel hub (2) is connected, three or four structures; Main shaft (1) vertical equity is arranged, the back segment of main shaft (1) is connected in the centre bore of brushgear (7) by bearing and brushgear (7), and main shaft (1) is energy flexible rotating in the centre bore of brushgear (7); The rear end of main shaft (1) is connected with active force; The center that be fixed on wheel hub (2) vertical with wheel hub (2), front end of main shaft (1); Each rotating vane comprises motor and blade; The flat shape of blade is rectangular, and blade is rigidity; All motors are evenly connected in around wheel hub, and the output shaft of all motors is in same horizontal vertical guide; The output shaft of each motor and corresponding blade are fixed on the root of blade; Brushgear (7) comprises support (71) and several to brush; The often pair of brush comprises the brush head that is arranged on brushgear (7) and is arranged on the upper conducting ring slidingly contacted with brush head of main shaft (1), is insulate between each conducting ring; All motors are connected with brush with adopting electric wire between controller; With equal live wire passage in main shaft (1) in wheel hub (2), the connection wire between the conducting ring of all motors and brushgear (7) passes through from cable channel; All motors are identical, controlled its running and have a rest to stop, thus control the angle of attack of blade by controller.
2. a kind of variable-pitch propeller according to claim 1, is characterized in that: vaned aerofoil profile is flat pattern under the recessed or epirelief of epirelief.
3. a kind of variable-pitch propeller according to claim 1, is characterized in that: the output shaft of motor and the link position of corresponding blade are located substantially on 1/3rd places of the chord length of this blade.
4. a kind of variable-pitch propeller according to claim 1, is characterized in that: conducting ring adopts silver or copper material to make.
5. a kind of variable-pitch propeller according to claim 1, is characterized in that: all motors all adopt servomotor.
6. a kind of variable-pitch propeller according to claim 1, is characterized in that: when installing this variable-pitch propeller, and the support (71) of brushgear and the frame of main power source are connected, and active force inputs from main shaft (1) rear end; See from back to front, when active force drive shaft (1) is rotated counterclockwise, blade at the angle of attack of diverse location is: on the right side of main shaft (1), is α ° from the angle of attack of blade 6 o'clock to 12 o'clock; In the left side of main shaft (1), from 12 o'clock to 11 o'clock, the angle of attack of blade gradually becomes β ° by α °, is β °, changes back to α ° from 5 o'clock to the angle of attack of 6 blades gradually by β ° from the angle of attack of blade 11 o'clock to 5 o'clock; α ° is a fixed angle between 4 ° ~ 10 °; β ° is a fixed angle between 84 ° ~ 90 °.
7. a kind of variable-pitch propeller according to claim 1 or 6, is characterized in that: the angle of attack number of degrees of blade are: α ° is 5 °; β ° is 86 °.
8. a kind of variable-pitch propeller according to claim 1, it is characterized in that: symmetry is arranged in the middle part of the leading edge of left and right wing of aircraft in pairs, active force inputs from the rear end of their main shaft, and the support of their brushgear is fixedly mounted on wing, and two variable-pitch propellers turn on the contrary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420789016.0U CN204297064U (en) | 2014-12-15 | 2014-12-15 | A kind of variable-pitch propeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420789016.0U CN204297064U (en) | 2014-12-15 | 2014-12-15 | A kind of variable-pitch propeller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204297064U true CN204297064U (en) | 2015-04-29 |
Family
ID=53102627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420789016.0U Withdrawn - After Issue CN204297064U (en) | 2014-12-15 | 2014-12-15 | A kind of variable-pitch propeller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204297064U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104443360A (en) * | 2014-12-15 | 2015-03-25 | 佛山市神风航空科技有限公司 | Variable pitch propeller |
-
2014
- 2014-12-15 CN CN201420789016.0U patent/CN204297064U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104443360A (en) * | 2014-12-15 | 2015-03-25 | 佛山市神风航空科技有限公司 | Variable pitch propeller |
| CN104443360B (en) * | 2014-12-15 | 2016-08-31 | 佛山市神风航空科技有限公司 | A kind of variable-pitch propeller |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104477381B (en) | A kind of double displacement oar aircraft | |
| CN110094302B (en) | Variable-propeller top edge self-rotating vertical axis wind turbine | |
| CN104443384B (en) | A kind of rotating vanes class flapping wing aircraft | |
| CN104443360B (en) | A kind of variable-pitch propeller | |
| US20180030956A1 (en) | Fluid Turbine with Control System | |
| CN204297064U (en) | A kind of variable-pitch propeller | |
| CN203921189U (en) | Agricultural unmanned plane blade pitch control mechanism | |
| CN104948387A (en) | Double-impeller wind power generator set and wind energy capturing method thereof | |
| CN104443385A (en) | Plate flapping wing lift device with stepper motors | |
| CN104802989B (en) | A kind of guide-roller type cylinder wing thrust generating means | |
| CN203594614U (en) | Variable-pitch fan | |
| CN209351574U (en) | A kind of propeller for preventing sundries from winding | |
| CN104265564B (en) | Oval orbit controls formula vertical axis turbine | |
| CN104773293B (en) | A kind of band wind ball drives the rotor lift device of wind wheel | |
| CN203902838U (en) | Thrust generating device comprising rotary flapping wing | |
| CN205131662U (en) | Compound rotatory wing lift arrangement | |
| CN205131653U (en) | Double -oar composite wing | |
| CN210371018U (en) | Cross brace device for large vertical axis wind turbine | |
| CN104192296B (en) | The straight wing high lift device of parallel-moving type of variable high spud angle | |
| CN204623841U (en) | A kind of guide-roller type cylinder wing thrust generating apparatus | |
| CN204310035U (en) | A kind of translation class screw propeller | |
| CN204642156U (en) | A kind of motorized pulleys wing thrust generating apparatus | |
| CN207686904U (en) | A kind of wind-driven generator with water conservancy diversion empennage | |
| CN105151291A (en) | Coaxial double-propeller unmanned aerial vehicle | |
| CN110307117A (en) | A kind of adjustable sweepforward in angle of sweep and sweepback combined type Blades For Horizontal Axis Wind |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150429 Effective date of abandoning: 20160831 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |