CN109649639A - The synchronous pitch-changing mechanism of propeller and the variable-pitch propeller with it - Google Patents
The synchronous pitch-changing mechanism of propeller and the variable-pitch propeller with it Download PDFInfo
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- CN109649639A CN109649639A CN201710940728.6A CN201710940728A CN109649639A CN 109649639 A CN109649639 A CN 109649639A CN 201710940728 A CN201710940728 A CN 201710940728A CN 109649639 A CN109649639 A CN 109649639A
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- propeller
- pitch
- changing mechanism
- displacement
- limiting slot
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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
- B64C11/30—Blade pitch-changing mechanisms
- B64C11/32—Blade pitch-changing mechanisms mechanical
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- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention provides a kind of synchronous pitch-changing mechanism of propeller and with its variable-pitch propeller, which includes: drive shaft；Type star polygon work, type star polygon work include interconnecting piece and at least three extension rods, and at least three extension rods are disposed in an evenly spaced relation in the periphery of interconnecting piece, and interconnecting piece and driving axis connection, drive shaft can be moved up and down with rotation connection；At least three displacement arms, each displacement arm all have first end and second end, and the second end of displacement arm is fixedly connected with propeller blade；At least three STATEMENT OF FEDERALLY SPONSOREDs, at least three STATEMENT OF FEDERALLY SPONSOREDs are arranged in a one-to-one correspondence at least three extension rods and at least three displacement arms respectively, STATEMENT OF FEDERALLY SPONSORED is arranged between extension rod and the first end of displacement arm, and type star polygon work is by driving STATEMENT OF FEDERALLY SPONSORED movement to drive propeller blade displacement.It applies the technical scheme of the present invention, cannot achieve more complex, the at high cost technical problem of the structure for synchronizing accurate bending moment and bending moment structure of multiple propeller blades to solve screw propeller variable-torque structure in the prior art.
Description
Technical field
The present invention relates to aviation power technical field more particularly to a kind of synchronous pitch-changing mechanism of propeller and with its change
Away from propeller.
Background technique
Propeller generates driving force by rotating the air around blade to arrange, to meet the power of aircraft
Demand.The sides for having the aircraft across big airspace altitude ability and mostly using speed change, displacement or speed change displacement mixed all kinds of at present
Formula changes propeller driving force, meets different state of flights.
Propeller variable pitch refers to that blade helicoid can rotate blade by pitch-changing mechanism and it is made to rotate with respect to propeller hub.Blade
A position is often turned to, has a corresponding propeller pitch angle, generates corresponding driving force.After Propeller variable pitch, performance
Just changed, is adapted to demand of the various operational configurations to propeller.For high-altitude low reynolds number aircraft in different height
To the different demands of propeller driving force on degree, variable-pitch propeller compared with common spacing is starched can according to the operating condition of aircraft flight and
The purpose of adjusting pitch at any time, reaching reduction energy consumption, extend the host service life.Therefore to the propeller of variablepiston propeller
Pitch-changing mechanism analyze very necessary.However, currently used Propeller variable pitch structure cannot achieve multiple propeller blades
Synchronize accurate bending moment, while structure is also more complex, at high cost.
Summary of the invention
The present invention provides a kind of synchronous pitch-changing mechanism of propeller and with its variable-pitch propeller, it is able to solve existing skill
In art screw propeller variable-torque structure cannot achieve multiple propeller blades the structure for synchronizing accurate bending moment and bending moment structure it is more complex,
Technical problem at high cost.
According to an aspect of the present invention, a kind of synchronous pitch-changing mechanism is provided, synchronous pitch-changing mechanism includes: drive shaft；Star
Shape part, type star polygon work include interconnecting piece and at least three extension rods, and at least three extension rods are disposed in an evenly spaced relation in the week of interconnecting piece
Edge, interconnecting piece and driving axis connection, drive shaft can be moved up and down with rotation connection；At least three displacement arms, each displacement arm are equal
It has a first end and a second end, at least three displacement arms are arranged in a one-to-one correspondence at least three extension rods, the second end of displacement arm
It is fixedly connected with propeller blade；At least three STATEMENT OF FEDERALLY SPONSOREDs, at least three STATEMENT OF FEDERALLY SPONSOREDs respectively at least three extension rods and at least
Three displacement arms are arranged in a one-to-one correspondence, and STATEMENT OF FEDERALLY SPONSORED is arranged between extension rod and the first end of displacement arm, and type star polygon work passes through driving
STATEMENT OF FEDERALLY SPONSORED is moved to drive propeller blade displacement.
Further, the synchronous pitch-changing mechanism of propeller further includes propeller hub, and propeller hub has the first limiting slot, type star polygon work, linkage
Part and displacement arm are arranged in the first limiting slot, and drive shaft drives type star polygon work to move up and down in the first limiting slot, extension rod
STATEMENT OF FEDERALLY SPONSORED is driven to move up and down in the first limiting slot, STATEMENT OF FEDERALLY SPONSORED drives displacement arm to rotate in the first limiting slot.
Further, propeller hub also has the second limiting slot, and the second limiting slot is arranged for accommodating in propeller blade end
The first bearing at place, displacement armband are moved propeller blade and are rotated in the second limiting slot to realize displacement.
Further, two first bearings being arranged at intervals in the end of propeller blade, the second limiting slot is two,
Two first bearings are correspondingly arranged in two the second limiting slots, and propeller hub also has third limiting slot, and third limiting slot is set
It sets between two the second limiting slots and is connected with two the second limiting slots, third limiting slot is for accommodating propeller blade
Swingle.
Further, the diameter of two the second limiting slots is identical, and the diameter of third limiting slot is straight less than the second limiting slot
Diameter.
Further, the synchronous pitch-changing mechanism of propeller further includes washer, and the second end and first of displacement arm is arranged in washer
Between bearing.
Further, STATEMENT OF FEDERALLY SPONSORED includes cylinder sliding block, and cylinder sliding block is fixed on extension rod, and displacement arm further includes sliding
The first end of displacement arm is arranged in rail, sliding rail, and cylinder sliding block is rotationally and slidably arranged in sliding rail.
Further, drive shaft is straight line servo driving axis, and straight line servo driving axis carries out closed loop control by straight line steering engine
System, according to the pitch angle value of the available propeller blade in position of straight line servo driving axis.
Further, the synchronous pitch-changing mechanism of propeller further includes second bearing, and second bearing is arranged in straight line servo driving
Between axis and interconnecting piece.
According to another aspect of the present invention, a kind of variable-pitch propeller is provided, variable-pitch propeller, which includes that propeller is synchronous, to be become
Spacing mechanism, the synchronous pitch-changing mechanism of propeller are the synchronous pitch-changing mechanism of the above-mentioned propeller provided.
Apply the technical scheme of the present invention, drive shaft linear reciprocating motion provide displacement driving force, by with drive shaft phase
The type star polygon work of connection is swung with driving displacement arm to realize, the second end of displacement arm is fixedly connected with propeller blade, displacement arm
Propeller pitch angle of the propeller blade around its axle center can be changed by, which swinging, rotates, and thus, it is possible to realize that the synchronous of multiple propeller blades becomes
Square.Furthermore for such mode when carrying out screw propeller variable-torque operation, drive shaft, which only passes through type star polygon work and displacement arm, can drive spiral
Paddle blade bending moment, such mode structure is simple, operation is easy and at low cost.
Detailed description of the invention
Included attached drawing is used to provide to be further understood from the embodiment of the present invention, and which constitute one of specification
Point, for illustrating the embodiment of the present invention, and come together to illustrate the principle of the present invention with verbal description.It should be evident that below
Attached drawing in description is only some embodiments of the present invention, for those of ordinary skill in the art, is not paying creation
Property labour under the premise of, be also possible to obtain other drawings based on these drawings.
Fig. 1 shows the internal structure signal of the synchronous pitch-changing mechanism of the propeller provided according to a particular embodiment of the invention
Figure；
Fig. 2 shows the structural schematic diagrams that the type star polygon work provided according to a particular embodiment of the invention is connect with displacement arm；
Fig. 3 shows the structural representation that the displacement arm provided according to a particular embodiment of the invention is connect with propeller blade
Figure；
Fig. 4 shows the overall structure signal of the synchronous pitch-changing mechanism of the propeller provided according to a particular embodiment of the invention
Figure；
Fig. 5 shows the structural schematic diagram of the type star polygon work provided according to a particular embodiment of the invention；
Fig. 6 shows the structural schematic diagram of the propeller hub provided according to a particular embodiment of the invention.
Wherein, the above drawings include the following reference numerals:
10, drive shaft；20, type star polygon work；21, interconnecting piece；22, extension rod；30, displacement arm；31, sliding rail；40, STATEMENT OF FEDERALLY SPONSORED；
50, propeller hub；51, the first limiting slot；52, the second limiting slot；53, third limiting slot；60, second bearing；100, propeller blade；
110, first bearing.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Ground description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is right below
The description only actually of at least one exemplary embodiment be it is illustrative, never as to the present invention and its application or use
Any restrictions.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
Every other embodiment obtained, shall fall within the protection scope of the present invention.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
Unless specifically stated otherwise, positioned opposite, the digital table of the component and step that otherwise illustrate in these embodiments
It is not limited the scope of the invention up to formula and numerical value.Simultaneously, it should be appreciated that for ease of description, each portion shown in attached drawing
The size divided not is to draw according to actual proportionate relationship.For technology, side known to person of ordinary skill in the relevant
Method and equipment may be not discussed in detail, but in the appropriate case, and technology, method and apparatus should be considered as authorizing specification
A part.In shown here and discussion all examples, any occurrence should be construed as merely illustratively, rather than
As limitation.Therefore, the other examples of exemplary embodiment can have different values.It should also be noted that similar label and word
Mother indicates similar terms in following attached drawing, therefore, once it is defined in a certain Xiang Yi attached drawing, then in subsequent attached drawing
It does not need that it is further discussed.
As shown in Figures 1 to 5, a kind of propeller synchronization pitch-changing mechanism is provided according to a particular embodiment of the invention, it should
Synchronous pitch-changing mechanism includes drive shaft 10, type star polygon work 20, at least three displacement arms 30 and at least three STATEMENT OF FEDERALLY SPONSOREDs 40, wherein star
Shape part 20 includes interconnecting piece 21 and at least three extension rods 22, and at least three extension rods 22 are disposed in an evenly spaced relation in interconnecting piece 21
Periphery, interconnecting piece 21 are connect with drive shaft 10, and drive shaft 10 can be moved up and down with rotation connection 21, and each displacement arm 30 all has
First end and second end, at least three displacement arms 30 are arranged in a one-to-one correspondence at least three extension rods 22, and the second of displacement arm 30
End is fixedly connected with propeller blade 100, and at least three STATEMENT OF FEDERALLY SPONSOREDs 40 become at least three extension rods 22 and at least three respectively
It is arranged in a one-to-one correspondence away from arm 30, STATEMENT OF FEDERALLY SPONSORED 40 is arranged between extension rod 22 and the first end of displacement arm 30, and type star polygon work 20 passes through
Drive the movement of STATEMENT OF FEDERALLY SPONSORED 40 to drive 100 displacement of propeller blade.
Using such configuration mode, 10 linear reciprocating motion of drive shaft provides displacement driving force, by with 10 phase of drive shaft
The type star polygon work 20 of connection is swung with driving displacement arm 30 to realize, the second end of displacement arm 30 is fixedly connected with propeller blade 100,
The swing of displacement arm 30 can be changed into propeller pitch angle of the propeller blade 100 around its axle center and rotate, and thus, it is possible to realize multiple spirals
The synchronization bending moment of paddle blade 100.Furthermore for such mode when carrying out screw propeller variable-torque operation, drive shaft 10 only passes through type star polygon work
20 and displacement arm 30 can drive 100 bending moment of propeller blade, such mode structure is simple, operation is easy and at low cost.
Further, in the present invention, as shown in fig. 6, in order to which that realizes multiple propeller blades 100 synchronizes accurate change
Square can configure the synchronous pitch-changing mechanism of propeller to further include propeller hub 50, and propeller hub 50 has the first limiting slot 51, type star polygon work 20,
STATEMENT OF FEDERALLY SPONSORED 40 and displacement arm 30 are arranged in the first limiting slot 51, and drive shaft 10 drives type star polygon work 20 in the first limiting slot 51
It moves up and down, extension rod 22 drives STATEMENT OF FEDERALLY SPONSORED 40 to move up and down in the first limiting slot 51, and STATEMENT OF FEDERALLY SPONSORED 40 drives displacement arm 30 to exist
Rotation in first limiting slot 51.
Using such configuration mode, by the way that the first limiting slot 51 is arranged in propeller hub 50, the first limiting slot 51 can limit star
For the freedom of motion of shape part 20 so that it is moved up and down along vertical direction under the driving of drive shaft 10, the first limiting slot 51 can
The freedom of motion of STATEMENT OF FEDERALLY SPONSORED 40 is limited so that it is moved up and down along vertical direction under the driving of type star polygon work 20, first limits
Slot 51 can limit the freedom of motion of displacement arm 30 so that thus it drives propeller blade in the driving lower swing of STATEMENT OF FEDERALLY SPONSORED 40
100 synchronize accurate bending moment.
Further, in the present invention, propeller hub 50 also has the second limiting slot 52, and the second limiting slot 52 is for accommodating setting
First bearing 110 in 100 end of propeller blade, displacement arm 30 drive propeller blade 100 in the second limiting slot 52
Rotation is to realize displacement.Using such configuration mode, the second limiting slot 52 can limit the freedom of motion of propeller blade 100,
Realize the purpose of the accurate displacement of propeller.
It, can be at the end interval of propeller blade 100 in order to realize the accurate installation of propeller hub 50 Yu propeller blade 100
Setting two first bearings 110 of setting, the second limiting slot 52 are two, and two first bearings 110 are correspondingly arranged in two
In second limiting slot 52, propeller hub 50 also have third limiting slot 53, third limiting slot 53 setting two the second limiting slots 52 it
Between and be connected with two the second limiting slots 52, third limiting slot 53 is used to accommodate the swingle of propeller blade 100.Wherein,
As a specific embodiment of the invention, the diameter of two the second limiting slots 52 is identical, and the diameter of third limiting slot 53 is less than
The internal diameter of the diameter of second limiting slot 52, third limiting slot 53 is more bigger than the bar diameter of the swingle of propeller blade 100, in order to
The installation and rotation of propeller blade 100, while passing through propeller hub 50 to limit the freedom of motion of propeller blade 100, make it
It is only capable of rotating around propeller hub 50.
Using such configuration mode, pass through two first bearings being fixedly connected with propeller blade 100 110 and two
Two limiting slots 52, which match, to be defined in propeller blade 100 in propeller hub 50, the axis face propeller hub 50 of propeller blade 100
Center, propeller blade 100 can be rotated relative to propeller hub 50, to change the propeller pitch angle of propeller blade 100.
Further, the first bearing 110 of displacement arm 30 and propeller blade 100 collides in order to prevent, can be by spiral shell
The synchronous pitch-changing mechanism of rotation paddle is configured to further include washer, and washer is arranged between the second end of displacement arm 30 and first bearing 110,
First bearing 110 and displacement arm 30 to be separated.
In the present invention, consider structure complexity and cost, STATEMENT OF FEDERALLY SPONSORED 40 can be configured on the cylinder sliding block for including, cylinder
Sliding block is fixed on extension rod 22, and displacement arm 30 further includes sliding rail 31, and the first end of displacement arm 30 is arranged in sliding rail 31, circle
Column sliding block is rotationally and slidably arranged in sliding rail 31.
Using such configuration mode, when needing to drive screw propeller variable-torque, drive shaft 10 pumps, drive shaft 10
It is connect with type star polygon work 20, drive shaft 10 can drive type star polygon work 20 to move up and down, and cylinder sliding block is fixedly connected in type star polygon work 20, star
Shape part 20, which moves up and down, can drive cylinder sliding block to move up and down, and cylinder sliding block is arranged in sliding rail 31, and cylinder sliding block can be in displacement
It slidably reciprocates in the sliding rail 31 of arm 30, and may be implemented mutually to rotate.Displacement arm 30 is stationarily connected to propeller blade 100
The arm of force of root, cylinder sliding block, which moves up and down, can drive displacement arm 30 to swing, and the swing of displacement arm 30 can drive mutually fixed to be connected with it
The propeller blade 100 connect makes the propeller pitch angle of propeller blade 100 change around its axis rotation.The first of displacement arm 30
The end at end is sliding rail 31, and the width of sliding rail 31 is identical as cylinder sliding block diameter, is driving displacement arm 30 to swing for cylinder sliding block
During can slide and rotate in sliding rail 31.
Further, in the present invention, it in order to which that realizes multiple propeller blades 100 synchronizes accurate displacement, can will drive
Axis 10 is configured to straight line servo driving axis, and straight line servo driving axis carries out closed-loop control by straight line steering engine, according to straight line steering engine
The pitch angle value of the available propeller in the position of drive shaft.
Using such configuration mode, straight line steering engine executes displacement instruction, and straight line servo driving straight line servo driving axis 10 is done
Linear reciprocating motion provides displacement driving force, passes through the type star polygon work 20 and its cylinder sliding block and cunning being connected with straight line servo driving axis
Rail 31 drives displacement arm 30 to realize and swings, and displacement arm 30, which is swung, can drive propeller pitch angle of the propeller blade 100 around its axle center to rotate,
The freedom of motion of propeller blade 100 is limited by propeller hub 50, realizes the purpose of the accurate displacement of propeller blade 100, and is led to
Cross the position feedback pitch angle value of straight line servo driving axis.Under such mode, straight line steering engine can provide closed loop feedback straight line rudder
The position of machine drive rod, and the angle value of pitch is calculated by the position of straight line servo driving bar, it is more thus, it is possible to realize
A propeller blade 100 synchronizes accurate displacement, mitigates mechanism quality.
Further, in the present invention, in order to realize the protection to steering engine, the synchronous pitch-changing mechanism of propeller can be configured to
It further include second bearing 60, second bearing 60 is arranged between straight line servo driving axis and interconnecting piece 21.Using such configuration side
Formula, straight line servo driving axis are connected with type star polygon work 20 and can be rotated by second bearing 60, can protected to steering engine.
According to another aspect of the invention, a kind of variable-pitch propeller is provided, which includes as described above
Propeller synchronizes pitch-changing mechanism.Since the synchronous pitch-changing mechanism of propeller of the invention can be realized multiple propeller blades 100
Synchronous bending moment, and structure is simple, at low cost, and therefore, the synchronous pitch-changing mechanism of the propeller is applied in variable-pitch propeller, it can
The working performance of propeller is greatlyd improve, so that the variable-pitch propeller adjusts pitch according to the operating condition of aircraft at any time, is reached
Energy consumption is reduced, the purpose in host service life is extended.
In order to be further understood that the present invention, below with reference to Fig. 1 to Fig. 5 to the synchronous displacement machine of propeller of the invention
Structure is described in detail.
The synchronous pitch-changing mechanism of propeller of the invention includes 50, three straight line servo driving axis, type star polygon work 20, propeller hub cylinders
Sliding block, three 30, three, displacement arm second bearings 60 of propeller blade 100, one and two first bearings 110, wherein star
Part 20 includes interconnecting piece 21 and three extension rods 22, and three extension rods 22 are evenly spaced apart to be arranged in the periphery of interconnecting piece 21, and three
A extension rod 22 is fixedly connected with three cylinder sliding blocks one-to-one correspondence respectively, three cylinder sliding blocks respectively with three displacement arms 30 1
One is correspondingly connected with, and the synchronous pitch-changing mechanism of propeller of the invention is rotational symmetry structure.
Straight line steering engine receive fly control instruction, straight line servo driving straight line servo driving axis 10 do linear reciprocating motion generate it is past
Multiple movement is to provide the driving force of pitch-changing mechanism.Straight line servo driving axis is connected by second bearing 60 with type star polygon work 20, directly
Line servo driving axis can be realized integrated reciprocating with type star polygon work 20 on along axis direction and move, straight line servo driving axis and
The inner ring of two bearings 60 is fixedly connected, and the blind hole in the center of the outer ring and type star polygon work 20 of second bearing 60 is fixedly connected, and is passed through
Cover board is fixed, and straight line servo driving axis can be relatively rotated with type star polygon work 20.
Cylinder sliding block is fixedly connected on the end of the extension rod 22 of type star polygon work 20, sets at the position of the first end of displacement arm 30
It is equipped with sliding rail 31, the width of sliding rail 31 is identical as the diameter of cylinder sliding block, for cylinder sliding block in the mistake for driving displacement arm 30 to swing
It can slide and rotate in sliding rail 31 in journey.Displacement arm 30 is fixedly connected with the root of propeller blade 100, propeller blade
100 swingle is fixedly connected with the bearing inner race of two first bearings 110 respectively, wherein close to the first bearing of displacement arm 30
110 bearing inner race is separated with displacement arm 50 by washer, and the first bearing 110 far from displacement arm 30 relies on propeller blade
100 carry out defined position.
The shell of the synchronous pitch-changing mechanism of propeller is propeller hub 50, is provided in propeller hub 50 and two first bearings 110 and spiral shell
Revolve corresponding second limiting slot 52 of swingle and third limiting slot 53, the second limiting slot 52 and first bearing of paddle blade 100
110 bearing outer ring is fixedly connected, and the internal diameter of third limiting slot 53 is more bigger than the outer diameter of the swingle of propeller blade 100.Spiral shell
Rotation paddle blade 100 is accurately placed in propeller hub 50 by two first bearings 110, the axis face propeller hub of propeller blade 100
50 centers, limiting propeller blade 100 can only rotate, and cannot move axially.
During carrying out the pitch adjustment of propeller blade 100, straight line steering engine executes displacement instruction, and straight line steering engine drives
Dynamic straight line servo driving axis 10 does linear reciprocating motion and provides displacement driving force, passes through the star being connected with straight line servo driving axis
Part 20 and its cylinder sliding block and sliding rail 31 drive the realization of displacement arm 30 to swing up and down, and the swing of displacement arm 5 drives propeller blade
100 around its axis rotation, to realize that the propeller pitch angle of propeller blade 100 changes, by controlling straight line servo driving axis
Position accurately control pitch angle value.
In conclusion the synchronous pitch-changing mechanism of propeller of the invention is compared with prior art, it can be realized multiple propellers
The synchronization bending moment of blade 100.The straight line steering engine of pitch-changing mechanism executes displacement instruction, and straight line servo driving straight line servo driving axis is done
Linear reciprocating motion provides displacement driving force, and the position of closed loop feedback straight line servo driving axis, straight line servo driving axis pass through
Type star polygon work 20 and displacement arm 30 change the propeller pitch angle of propeller blade 100 accurately.The synchronous pitch-changing mechanism of propeller of the invention
Composition is simple, and concentricity is high, can effectively reduce the rotary inertia of straight line servo driving axis and pitch-changing mechanism, high reliablity.Straight line
Servo driving axis is connected by second bearing with type star polygon work 20, can mutually be rotated with type star polygon work 20, be realized the protection to steering engine.Rudder
Machine can accurately control the swing position of each displacement arm 30 by type star polygon work 20, to improve the pitch of propeller blade 100
Angle variation control precision, and realize the synchronous variation of the propeller pitch angle of each propeller blade 100.Propeller blade 100 and propeller hub phase
Two first bearings and the second limiting slot 52 even can offset the centrifugal force generated when 100 high speed rotation of propeller blade and power
Square makes straight line servo driving power only be used to change propeller pitch angle, and steering engine is high-efficient.
For ease of description, spatially relative term can be used herein, as " ... on ", " ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figure
Except different direction in use or operation.For example, being described as if the device in attached drawing is squeezed " in other devices
It will be positioned as " under other devices or construction after part or construction top " or the device of " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " may include " ... top " and
" in ... lower section " two kinds of orientation.The device can also be positioned with other different modes and (is rotated by 90 ° or in other orientation), and
And respective explanations are made to the opposite description in space used herein above.
In addition, it should be noted that, limiting components using the words such as " first ", " second ", it is only for be convenient for
Corresponding components are distinguished, do not have Stated otherwise such as, there is no particular meanings for above-mentioned word, therefore should not be understood as to this
The limitation of invention protection scope.
These are only the preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of synchronous pitch-changing mechanism of propeller, which is characterized in that the synchronous pitch-changing mechanism includes:
Drive shaft (10)；
Type star polygon work (20), the type star polygon work (20) includes interconnecting piece (21) and at least three extension rods (22), described at least three
Extension rod (22) is disposed in an evenly spaced relation in the periphery of the interconnecting piece (21), and the interconnecting piece (21) and the drive shaft (10) are even
It connects, the drive shaft (10) can drive the interconnecting piece (21) to move up and down；
At least three displacement arms (30), each displacement arm (30) all have first end and second end, at least three changes
It is arranged in a one-to-one correspondence away from arm (30) and at least three extension rods (22), the second end and propeller paddle of the displacement arm (30)
Leaf is fixedly connected；
At least three STATEMENT OF FEDERALLY SPONSOREDs (40), at least three STATEMENT OF FEDERALLY SPONSOREDs (40) respectively at least three extension rods (22) and at least three
A displacement arm (30) is arranged in a one-to-one correspondence, and the STATEMENT OF FEDERALLY SPONSORED (40) is arranged in the extension rod (22) and the displacement arm
(30) between first end, the type star polygon work (20) is by driving STATEMENT OF FEDERALLY SPONSORED (40) movement to drive the propeller blade
Displacement.
2. the synchronous pitch-changing mechanism of propeller according to claim 1, which is characterized in that the synchronous pitch-changing mechanism of the propeller
Further include propeller hub (50), the propeller hub (50) have the first limiting slot (51), the type star polygon work (20), the STATEMENT OF FEDERALLY SPONSORED (40) and
The displacement arm (30) is arranged in first limiting slot (51), and the drive shaft (10) drives the type star polygon work (20) to exist
It is moved up and down in first limiting slot (51), the extension rod (22) drives the STATEMENT OF FEDERALLY SPONSORED (40) in first limiting slot
(51) it is moved up and down in, the STATEMENT OF FEDERALLY SPONSORED (40) drives the displacement arm (30) rotation in first limiting slot (51).
3. the synchronous pitch-changing mechanism of propeller according to claim 2, which is characterized in that the propeller hub (50) also has second
Limiting slot (52), second limiting slot (52) is for accommodating the first bearing that the propeller blade end is arranged in, institute
Stating displacement arm (30) drives the propeller blade to rotate in second limiting slot (52) to realize displacement.
4. the synchronous pitch-changing mechanism of propeller according to claim 3, which is characterized in that in the end of the propeller blade
Place is arranged at intervals with two first bearings, and second limiting slot (52) is two, and two first bearings are correspondingly set
It sets in two second limiting slots (52), the propeller hub (50) also has third limiting slot (53), third limiting slot (53)
It is arranged between two second limiting slots (52) and is connected with two second limiting slots (52), the third limit
Slot (53) is used to accommodate the swingle of the propeller blade.
5. the synchronous pitch-changing mechanism of propeller according to claim 4, which is characterized in that two second limiting slots (52)
Diameter it is identical, the diameter of the third limiting slot (53) is less than the diameter of second limiting slot (52).
6. the synchronous pitch-changing mechanism of propeller according to claim 3, which is characterized in that the synchronous pitch-changing mechanism of the propeller
It further include washer, the washer is arranged between the second end and the first bearing of the displacement arm (30).
7. the synchronous pitch-changing mechanism of propeller according to claim 1, which is characterized in that the STATEMENT OF FEDERALLY SPONSORED (40) includes cylinder
Sliding block, the cylinder sliding block are fixed on the extension rod (22), and the displacement arm (30) further includes sliding rail (31), described
The first end in the displacement arm (30) is arranged in sliding rail (31), and the cunning is rotationally and slidably arranged in the cylinder sliding block
In rail (31).
8. the synchronous pitch-changing mechanism of propeller according to claim 1, which is characterized in that the drive shaft (10) is straight line rudder
Machine drive shaft, the straight line servo driving axis carries out closed-loop control by straight line steering engine, according to the straight line servo driving axis
The pitch angle value of the available propeller blade in position.
9. the synchronous pitch-changing mechanism of propeller according to claim 8, which is characterized in that the synchronous pitch-changing mechanism of the propeller
It further include second bearing (60), the second bearing (60) is arranged in the straight line servo driving axis (10) and the interconnecting piece
(21) between.
10. a kind of variable-pitch propeller, which is characterized in that the variable-pitch propeller includes the synchronous pitch-changing mechanism of propeller, the spiral shell
Revolve the synchronous pitch-changing mechanism of the synchronous pitch-changing mechanism propeller as claimed in any one of claims 1 to 9 of paddle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Cited By (2)
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| CN115447788A (en) * | 2021-06-07 | 2022-12-09 | 海鹰航空通用装备有限责任公司 | Pitch angle optimization method for electric propulsion variable-pitch propeller power type aircraft |
| CN115503966A (en) * | 2021-06-22 | 2022-12-23 | 海鹰航空通用装备有限责任公司 | Propeller matching method of variable-pitch propeller and multistage supercharged engine |
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| CN115447788A (en) * | 2021-06-07 | 2022-12-09 | 海鹰航空通用装备有限责任公司 | Pitch angle optimization method for electric propulsion variable-pitch propeller power type aircraft |
| CN115447788B (en) * | 2021-06-07 | 2024-07-12 | 海鹰航空通用装备有限责任公司 | Pitch angle selection method for electric propulsion variable pitch propeller power type aircraft |
| CN115503966A (en) * | 2021-06-22 | 2022-12-23 | 海鹰航空通用装备有限责任公司 | Propeller matching method of variable-pitch propeller and multistage supercharged engine |
| CN115503966B (en) * | 2021-06-22 | 2024-07-09 | 海鹰航空通用装备有限责任公司 | Propeller matching method for variable-pitch propeller and multistage supercharged engine |
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| CN109649639B (en) | 2022-01-11 |
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