CN109466747A - Helicopter Main paddle displacement drive system and helicopter - Google Patents
Helicopter Main paddle displacement drive system and helicopter Download PDFInfo
- Publication number
- CN109466747A CN109466747A CN201811639509.5A CN201811639509A CN109466747A CN 109466747 A CN109466747 A CN 109466747A CN 201811639509 A CN201811639509 A CN 201811639509A CN 109466747 A CN109466747 A CN 109466747A
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- ring
- pitch
- helicopter
- main paddle
- displacement
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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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
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Abstract
The invention discloses a kind of Helicopter Main paddle displacement drive system and helicopters, including for making each blade of main paddle realize the pitch component of independence or the independent displacement in part and for the displacement driving device of drive incline disk component；The pitch component includes pitch, and the pitch is fixedly connected on universal joint and can rotate in company with universal joint, and the universal joint is connect with inner ring sleeve outer circle, the inner ring sleeve for cover in the rotor shaft of main paddle and with its axially slidable mating connection；The present invention can reach the independence of multiple main paddle blade displacements by the slope characteristic of pitch component, each blade influences each other when reducing displacement, inner ring sleeve is served only for realizing function in axial sliding, pitch is used to undertake the function of torque and wallowing motion, the stress for improving inner ring sleeve and pitch through this structure reduces the risk of inner ring sleeve and pitch crack damage.
Description
Technical field
The invention belongs to Helicopter Technology field, in particular to a kind of Helicopter Main paddle displacement drive system and go straight up to
Machine.
Background technique
Helicopter rotor system is a complicated mechanical structure, in, the rotor system of big payload helicopter, paddle body
It is arranged in rotor shaft, needs to be arranged three lead lag hinge, flapping hinge and pitch hinge hinge knots in the junction of paddle body and rotor shaft
Structure can be carried out every blade and wave, swings and change pitch；Change pitch when by drive system drive pitch hinge rotate from
And pitch is adjusted, the adjustment of existing pitch generallys use servo driving pitch and is driven by inclination dish driving pitch-change-link
Pitch hinge rotation,
Currently, the control form of helicopter capstan pitch system has single channel independent manipulation and two kinds of manipulation of multichannel mixing
Form.Not only complicated in mechanical structure, movement range are small for single channel independent manipulation form pitch, and drive the steering engine of rudder face work
The load of receiving is big, and steering engine long-time big load is needed to work, higher to steering engine performance requirement.The helicopter of multichannel mixing manipulation
Capstan pitch system can be effectively reduced the service load of single steering engine；
The patent that publication No. is CN104369859A has opened tilt table device and the control that a kind of unmanned plane drives helicopter altogether
Method processed, the rotation cup body of pitch directly with respect to main axis, should undertake the function that sliding undertakes rotation again,
Biggish torque and pulling force are born, stress condition is complicated, and being easily broken causes to damage, and once rotates cup body damage, then rotates
The matching relationship of cup body and fixed cup body can destroy, and fix cup body at this time and be easy to happen play or vibration aggravation rotation stop pin and cotter way
Rigid collision, once the matching relationship that rotation stop pin abjection cotter way both releases, then rotate cup body rotation torque can be passed through it is solid
Determine cup body to conduct to the output end of movement pull rod and steering engine, further damages steering engine；It is fixed cup body and passes through one group of rotation stop guide rail
And rotation stop pin realizes that rotation inhibits, due to the mismatch error of rotation stop pin and cotter way, rotation stop pin is easy to occur in cotter way small
Displacement, this structure are easy to cause the rigid collision of fixed cup body Yu rotation stop pin, fixed cup body are easily led to when stress is excessive, shape occurs
Become and the fracture failure of rotation stop pin, rotation stop pin with sliding of the fixed cup body on main shaft and can be swung frequently in cotter way
Inside reciprocatingly slide, rubbing surface when especially fixed cup body is swung between rotation stop pin and cotter way can change, rotation stop pin and
Cotter way surface has complicated friction stree, causes its surface to generate biggish abrasion, and since the variation of rubbing surface is easy
Sharp corner angle are generated, sharp corner angle can generate biggish scratch to the parts surface being in contact with it again, and so on pernicious
Circulation, the rigid collision that the gap that prolonged abrasion can increase rotation stop pin and cotter way both will increase reduce rotation stop pin simultaneously
Structural strength further increases the risk of the fracture of rotation stop pin；Its vertical and horizontal period of pitch moves mutually away between
Interference causes it to fix the components unbalance stress such as cup body and rotation cup body, fixes cup body and rotation cup body is easily damaged, and control
Precision processed is lower.
Summary of the invention
In view of this, the present invention provides a kind of Helicopter Main paddle displacement drive system and helicopter, improve pitch
Stress, reduces the service life of pitch, and it is independent that the pitch horizontal and vertical period is moved away between.
Helicopter Main paddle displacement drive system of the invention, including for making each blade of main paddle realize independent or part solely
Found the pitch component of displacement and the displacement driving device for drive incline disk component；The pitch component includes inclination
Disk, the pitch are fixedly connected on universal joint and can rotate in company with universal joint, and the universal joint is connect with inner ring sleeve outer circle,
The inner ring sleeve for cover in the rotor shaft of main paddle and with its axially slidable mating connection.Pass through inclining for pitch component
Oblique characteristic can reach the independence of multiple main paddle blade displacements, and each blade influences each other when reducing displacement, particularly with
The helicopter of double blades formula, it can be achieved that two completely self-contained displacements of blade, can meet the displacement requirement under increasingly complex operating condition,
The flight stability for improving helicopter drives the realization of pitch component to slide axially by inner ring sleeve, and inner ring sleeve is served only for reality
The function of now sliding, therefore pitch need to only undertake the function relative to rotor shaft rotation, i.e. torque is born by pitch
Inner ring sleeve, which is not used in, undertakes torque, and pitch is used to undertake the function of torque and wallowing motion, need to only slide in company with inner ring sleeve,
Without independently undertaking sliding function, Each performs its own functions for both inner ring sleeve and pitch, improves inner ring sleeve and inclination through this structure
The stress of disk reduces the risk of inner ring sleeve and pitch crack damage, improves the service life of inner ring sleeve and pitch, mentions
The high stability of system.
Further, the pitch includes being arranged on universal joint and rotating synchronously with rotor shaft and realize to become main blade
What rotating ring and rotating ring away from adjusting were rotatably assorted determines ring, determines ring and connect with displacement driving device output end.Determining ring has swing
It acts on, the driving of displacement driving device determines ring and realizes swing in company with universal joint, determines ring and slides together with rotating ring swing or opposite rotor shaft
To realize that the displacement to each main blade is adjusted, wherein rotating ring is rotatably assorted by the pitch hinge of intermediate connector and main paddle,
It rotates to realize the displacement tune to main blade by the pitch hinge of the sliding or the main paddle of wobble drive relative to rotor shaft of rotating ring
Section.
Further, described to determine to be connected on ring for limiting at least one set of anti-twisting equipment for determining ring rotation, prevent described in every group
Turning round device includes the first pivoted arm and the second pivoted arm being rotatably assorted, and first pivoted arm free end passes through revolute pair cooperation with ring is determined
Connection, the free end of second pivoted arm are used to be cooperatively connected with helicopter body by revolute pair.Anti-twisting equipment will not be fixed
Ring is circumferentially subjected to displacement, and not will cause shock loading, and anti-twisting equipment can only generate subtle friction in its hinged place, plays this friction
It is not enough to cause the Joint failure of anti-twisting equipment, anti-twisting equipment is realized stable connection to rotating ring and helicopter body, reduced
The risk of the failure of the anti-twisting equipment as caused by abrasion or rigid collision, improves the stability of drive system；It is filled by anti-torsion
Setting will determine that ring is stable, is reliably fixedly connected with holding with helicopter body determines the opposing stationary of ring, this structure can effectively avoid rotation
Wing axis by torque by rotating ring, determine ring and conduct to displacement driving device output end, reduce displacement driving device and damaged by torque
Bad risk；And the anti-twisting equipment of this structure can be realized by the folding of the first pivoted arm and the second pivoted arm and determine ring and helicopter body
Between the variation of spacing can meet and determine ring circumferentially sliding or various working condition requirements when swinging, anti-torsions fills during changing spacing
It sets without frictional dissipation between other component, not will cause the risk of anti-twisting equipment strength reduction.
It further, further include for the hold-fast ring with rotor shaft transmission cooperation, the hold-fast ring is by transmission device and moves
Ring connection is to drive rotating ring and rotor shaft to rotate synchronously；The transmission device includes the first transmission arm and second being rotatably assorted
The free end of transmission arm, first transmission arm and the second transmission arm is cooperated by revolute pair with hold-fast ring and rotating ring connect respectively
It connects.The present embodiment makes rotor shaft and rotating ring realize that synchronous rotation, stable drive no-load impact by transmission device, simultaneously
Spacing variation is realized by the foldable structure of double transmission arms, this structure can both guarantee that the rotor shaft transmission stable with rotating ring was matched
It closes, also meets the variation of spacing caused by rotating ring slides axially.
Further, the rotating ring with determine ring and be rotatably assorted by thin wall type angular contact ball bearing.Using thin wall type angular contact
Ball bearing, which reduces its weight, reduces its volume, so that compact overall structure, it is fixed that thin wall type angular contact ball bearing is served only for realizing
The relative rotation of ring and rotating ring, by inner ring sleeve and thin wall type angular contact ball bearing be separately respectively subjected to axial linear slide and
It circumferentially rotates, thin wall type angular contact ball bearing extends thin wall type angle relative to the swing for determining ring and rotating ring not generating period
The service life of contact ball bearing.
Further, slip ring is provided between the inner ring sleeve and rotor shaft.This structure reduces the contact with rotor shaft
Area reduces frictional dissipation, improves transmission efficiency, while can reduce the abrasion of inner ring sleeve or rotor shaft, extends its use
Service life only needs to change slip ring when wear occurs, reduces maintenance cost.
Further, the tilt component further includes several movement pull rods and pitch-change-link, described movement pull rod one end with
The transmission of displacement driving device cooperates the other end and determines ring to be cooperatively connected by revolute pair, and described pitch-change-link one end passes through with rotating ring
The revolute pair mating connection other end is used to be rotatably assorted with the pitch hinge of main paddle.This drive mechanism stable transmission, had both realized dynamic
Power transmission can also meet the requirement of caused spacing variation when pitch slides axially simultaneously, while can be real by multi-link structure
It is now driven over long distances, it is possible to increase in the arrangement spacing of rotor shaft axial direction, so that each components are easy to arrange.
Further, the movement pull rod is rotated with rotation centerline, pitch-change-link and the rotating ring determined at ring revolute pair cooperation
Rotation centerline, anti-twisting equipment at secondary cooperation are in the same plane with the rotation centerline determined at ring revolute pair cooperation.This
Structure act pull rod for determine ring supporting point and pitch-change-link for rotating ring supporting point and anti-twisting equipment relative to determining ring
Supporting point be located in same Plane of rotation, ensure that movement of the vertical and horizontal period away between is independent, vertical and horizontal
Period is absolutely not interfered away between, in conjunction with three movement pull rods along the circumferentially equally distributed structure feature of ring is determined, so that determining ring
Improved with the stress of rotating ring, one group of transmission device of setting can meet transmission and require.
Further, the inner ring sleeve inner circle is provided with for sealing two sealing rings between inner ring sleeve and rotor shaft, described
Slip ring is located between two sealing rings.By the way that slip ring to be sealed in an airtight cavity by sealing ring, reach dust-proof anti-
The effect of water so that slip ring sliding is smooth, while avoiding abrasion caused by external impurity pollution.
The invention also includes a kind of helicopter, Helicopter Main paddle displacement drive system applications described above are in described straight
The machine of liter.This helicopter can reach the independence of multiple main paddle blade displacements, and each blade influences each other when reducing displacement, especially
Its for double blades formula helicopter, it can be achieved that two completely self-contained displacements of blade, can meet the change under increasingly complex operating condition
Away from requiring, the flight stability of helicopter is improved.
Beneficial effects of the present invention:
The power output of displacement driving device to main blade is realized displacement by two groups of crank block slider structures by the invention of this reality
Adjust, this drive mechanism stable transmission, both realized power transmission or while can meet it is caused when pitch slides axially between
Requirement away from variation, at the same by multi-link structure can realize over long distances be driven, by two groups of crank block slider structures make its length away from
From stable transmission, it is possible to increase in the arrangement spacing of rotor shaft axial direction, so that each components are easy to arrange, multi-connection drive mechanism
It is easily axially uniformly arranged in rotor shaft and realizes stable transmission, two groups of crank block slider structures can have by micro- swing more than overload
Amount, wave above and below such as blade under complex working condition, swing when realized by micro- swings to Vibrant buffer, improvement stress
Concentration phenomenon；
The present invention can reach multiple masters by displacement driving device drive incline disk component, the slope characteristic of pitch component
The independence of paddle blade displacement, each blade influences each other when reducing displacement, can particularly with the helicopter of double blades formula
It realizes two completely self-contained displacements of blade, the displacement requirement under increasingly complex operating condition can be met, improve the flight of helicopter
Stability；
The present invention drives the realization of pitch component to slide axially by inner ring sleeve, and inner ring sleeve is served only for realizing in axial sliding
Function, therefore pitch need to only undertake the function relative to rotor shaft rotation, i.e. torque bears inner ring sleeve not by pitch
For undertaking torque, pitch is used to undertake the function of torque and wallowing motion, need to only slide in company with inner ring sleeve, without independent
Sliding function is undertaken, Each performs its own functions for both inner ring sleeve and pitch, the stress of inner ring sleeve and pitch is improved through this structure,
The risk for reducing inner ring sleeve and pitch crack damage improves the service life of inner ring sleeve and pitch, improves system
Stability；
Anti-twisting equipment of the present invention will not be circumferentially subjected to displacement determining ring, not will cause shock loading and rigid collision, be reduced
Determining ring stress, deformation occurs and the probability of fracture failure, improves the stability of system, the anti-twisting equipment of this structure can pass through
The variation for determining spacing between ring and helicopter body is realized in the folding of first pivoted arm and the second pivoted arm, is prevented during changing spacing
It turns round between device and other component without frictional dissipation, not will cause the risk of anti-twisting equipment strength reduction, both had transmission steady
Fixed characteristic has also had both stabilization, the characteristic without friction variation spacing；
The present invention makes rotor shaft and rotating ring realize that synchronous rotation, stable drive no-load impact by transmission device,
Spacing variation is realized by the structure of double transmission arms simultaneously, while rotating ring can be met and required in axial sliding along rotor shaft；
The present invention, which reduces its weight using thin wall type angular contact ball bearing, reduces its volume, so that compact overall structure,
Thin wall type angular contact ball bearing is served only for realizing the relative rotation for determining ring and rotating ring, passes through inner ring sleeve and thin wall type angular contact ball axis
It holds and is separately respectively subjected to axial linear slide and circumferentially rotates, thin wall type angular contact ball bearing is not sent out relative to ring and rotating ring is determined
It is raw periodically to swing, extend the service life of thin wall type angular contact ball bearing；
The contact area with rotor shaft is reduced by slip ring when this reality invention pitch component slides axially, is reduced
Frictional dissipation improves transmission efficiency, while can reduce the abrasion of inner ring sleeve or rotor shaft, prolongs its service life, works as generation
When abrasion, slip ring is only needed to change, reduces maintenance cost；
The present invention act pull rod for determine ring supporting point and pitch-change-link for rotating ring supporting point and anti-twisting equipment
It is located in same Plane of rotation relative to the supporting point for determining ring, ensure that movement of the vertical and horizontal period away between is independent, indulge
To and the lateral period absolutely not interfered away between, in conjunction with three movement pull rods along determine the circumferentially equally distributed structure spy of ring
Sign, so that determining the stress of ring and rotating ring is improved, one group of anti-twisting equipment of setting can meet transmission and require, and simplify whole knot
Structure, brief cost.
Detailed description of the invention
The invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is the isometric side structure schematic diagram of the present invention；
Fig. 2 is the isometric side structure schematic diagram (hiding main blade) of the present invention；
Fig. 3 is positive structure diagram of the present invention；
Fig. 4 is the right side structural representation of Fig. 3；
Fig. 5 is the A point enlarged structure schematic diagram of Fig. 3；
Fig. 6 is flapping hinge attachment structure schematic diagram；
Fig. 7 is gimbal structure schematic diagram；
Specific embodiment
Fig. 1 is the isometric side structure schematic diagram of the present invention；Fig. 2 is the isometric side structure schematic diagram (hiding main blade) of the present invention；
Fig. 3 is positive structure diagram of the present invention；Fig. 4 is the right side structural representation of Fig. 3；The A point enlarged structure that Fig. 5 is Fig. 3 is illustrated
Figure；Fig. 6 is flapping hinge attachment structure schematic diagram；Fig. 7 is gimbal structure schematic diagram；
As shown in the figure: the present embodiment includes main paddle, the main drive of the main paddle rotation of driving, for keeping each blade of main paddle real
Now the pitch component of the independent displacement of independence or part and the displacement driving device 2 for drive incline disk component；It is described to incline
Swash plate component includes pitch, and the pitch is fixedly connected on universal joint and can rotate in company with universal joint, the universal joint
It is connect with 12 outer circle of inner ring sleeve, the axially slidable set of inner ring sleeve is in the rotor shaft 3 of main paddle；It is driven by main drive
The rotation of dynamic rotor shaft drives pitch component to drive main paddle to rotate, by displacement driving device drive incline disk component
It moves main blade to rotate by center axis of its installation axle, realizes the change of main blade angle, thus achieve the purpose that main paddle displacement,
Main drive and displacement driving device 2 can be motor driver or fuel oil or natural gas driving device, this implementation power use
Electric steering engine driving, is not limited to that existing all kinds of motor forms such as external rotor electric machine can also be used in traditional inner rotor motor
Deng details are not described herein again, can reach the independence of multiple main paddle blade displacements by the slope characteristic of pitch component, reduces
Each blade influences each other when displacement, and the helicopter particularly with double blades formula is, it can be achieved that two completely self-contained changes of blade
Away from can meet the displacement requirement under increasingly complex operating condition, improve the flight stability of helicopter, with double blades in the present embodiment
It can be calculated in real time by central processing unit and related algorithm for the helicopter of formula, when flight when helicopter takes off, turns to, hangs
The displacement characteristic that two blades need when under various operating conditions such as stop, move horizontally, so as to adjust pitch component slide axially away from
From and tilt angle meet the displacement requirements of two blades；The realization of pitch component is driven to slide axially by inner ring sleeve, it is interior
Ring set is served only for realizing the function of sliding, therefore pitch need to only undertake the function relative to rotor shaft rotation, i.e. torque passes through
Pitch is born and inner ring sleeve is not used in and undertakes torque, and pitch is used to undertake the function of torque and wallowing motion, only need to be with
It is slided with inner ring sleeve, without independently undertaking sliding function, Each performs its own functions for both inner ring sleeve and pitch, improves through this structure
The stress of inner ring sleeve and pitch reduces the risk of inner ring sleeve and pitch crack damage, improves inner ring sleeve and pitch
Service life, improve the stability of system；
In the present embodiment, main paddle is installed in rotor shaft 3, and flapping hinge, flapping hinge packet are wherein fixedly connected in rotor shaft 3
Include aluminum propeller hub axle journal 4, steel torsion pass block bearing block 5 and flapping axis 6,5 company of being bolted of propeller hub axle journal 4 and bearing block
The inner cavity to be formed for installing flapping axis 6 and flapping axis 6 being made to be rotatably assorted therewith is connect, wherein 6 company of being fixedly connected on of flapping axis
It connects on lid 7,7 sets of connection cover make flapping hinge realize that transmission is matched with rotor shaft in 3 upper end of rotor shaft and with it by spline engagement
It closes；This structure reduces the weight of propeller hub, ensure that the intensity of bearing block, and makes compact overall structure, this structure is waved
Hinge under maximum phase pitch up to 30 °；Flapping hinge is fixedly connected with standard shaft, and paddle folder 8 is rotatably assorted on standard shaft, and paddle presss from both sides 8
One end is fixedly connected with main blade 1；
In the present embodiment, the axially slidable set of inner ring sleeve is in the rotor shaft of main paddle；The universal joint includes interior
Circle 13 and outer ring, the inner ring 13 pass through the articulated shaft realization radially extended with inner ring sleeve and are rotatably assorted, wherein outer ring and inner ring
The same articulated shaft realization by radially extending is rotatably assorted, and wherein the articulated shaft of inner ring 13 and inner ring sleeve is perpendicular to outer ring and interior
The articulated shaft of circle；
In the present embodiment, the pitch include be arranged on universal joint and with rotor shaft rotate synchronously rotating ring 14, with
What rotating ring was rotatably assorted determines ring 15, and the rotating ring is fixedly connected on the outer ring of universal joint, can also be with the outer ring one of universal joint
Body formed, the outer ring of universal joint is used as rotating ring to use simultaneously, simplifies the structure of the two, and wherein rotating ring is used to undertake torque, and
The displacement of main blade is adjusted for rotating synchronously realization with rotor shaft, ring is determined and is used to connect with 2 output end of displacement driving device,
In order to increase system stability, displacement driving device usually requires to install on helicopter body, not turn with rotor shaft is synchronous
It is dynamic, therefore the component needs that pitch is connect with displacement driving device are opposing stationary, and the pitch hinge of main paddle blade can be in company with rotor
Axis rotation, therefore the component that pitch and displacement are hinged needs to rotate in company with rotor shaft, by rotating ring and determines being rotatably assorted for ring
Meet the operating status of other all parts, so that swash plate has the function of rotating relative to rotor shaft；Determining ring also has pendulum simultaneously
Dynamic effect, the driving of displacement driving device determine ring and realize swing in company with universal joint, determine ring together with rotating ring swing or opposite rotor shaft
Sliding is to realize that the displacement to each main blade is adjusted, and wherein rotating ring is matched by the pitch hinge rotation of intermediate connector and main paddle
It closes, rotates to realize the displacement to main blade by the pitch hinge of the sliding or the main paddle of wobble drive relative to rotor shaft of rotating ring
It adjusts；Certainly, the structure of pitch is not limited to determine the twin nuclei of ring and rotating ring, can be set and is independent rotating ring, at this time
Displacement driving device needs to rotate in company with rotor shaft, therefore the mounting rack that cooperation is driven with it can be arranged in rotor shaft, by displacement
Driving device is installed on mounting rack to be rotated together in company with rotor shaft, and specific details are not described herein again；
It is described to determine to be connected on ring for limiting at least one set of anti-twisting equipment for determining ring rotation, every group of institute in the present embodiment
Stating anti-twisting equipment includes the first pivoted arm 16 and the second pivoted arm 17 being rotatably assorted, first pivoted arm free end and determine ring by turn
Dynamic secondary mating connection, the free end of second pivoted arm are used to pass through revolute pair with helicopter body and be cooperatively connected；It is described to go straight up to
Machine body is helicopter shell or installation and the component on its shell with respect to housing stationary, and main drive is fixed in this implementation connects
Connect on helicopter shell, anti-twisting equipment install on main drive by main drive limitation determine ring rotate, first turn
The free end of arm and the second pivoted arm can realize that revolute pair is cooperatively connected by hinge with ring and helicopter body is determined, and can also lead to
It crosses joint ball bearing and realizes that revolute pair is cooperatively connected, details are not described herein again；The settable multiple groups of anti-twisting equipment are simultaneously circumferentially equal along ring is determined
Point distribution, the present embodiment are circumferentially symmetrical arranged two groups of anti-twisting equipments around rotor shaft, make that it is equally loaded, and anti-twisting equipment will not be
Determine ring to be circumferentially subjected to displacement, not will cause shock loading, anti-twisting equipment can only generate subtle friction in its hinged place, play this and rub
The Joint failure for being not enough to cause anti-twisting equipment is wiped, anti-twisting equipment realizes stable connection to rotating ring and helicopter body, reduces
The risk of the failure of the anti-twisting equipment as caused by abrasion or rigid collision, improves the stability of drive system；Pass through anti-torsion
Device will determine that ring is stable, is reliably fixedly connected with holding with helicopter body determines the opposing stationary of ring, this structure can effectively avoid
Rotor shaft by torque by rotating ring, determine ring and conduct to displacement driving device output end, reduce displacement driving device by torque and
The risk of damage；And the anti-twisting equipment of this structure can be realized by the folding of the first pivoted arm and the second pivoted arm and determine ring and helicopter machine
The variation of spacing can meet the various working condition requirements determined when ring is circumferentially slided or swung between body, change anti-torsion during spacing
Without frictional dissipation between device and other component, the risk of anti-twisting equipment strength reduction not will cause.
It further include the hold-fast ring 18 with rotor shaft transmission cooperation in the present embodiment, the hold-fast ring 18 passes through transmission device
With rotating ring connection to drive rotating ring and rotor shaft to rotate synchronously；The transmission device includes the first transmission arm 19 being rotatably assorted
With the second transmission arm 20, the free end of first transmission arm and the second transmission arm passes through rotation with hold-fast ring and rotating ring respectively
Pair is cooperatively connected；Revolute pair cooperation can be realized between first transmission arm and the second transmission arm and hold-fast ring and rotating ring by hinge
Connection can also realize that revolute pair is cooperatively connected by joint ball bearing, and details are not described herein again；Wherein hold-fast ring and rotor shaft can
Transmission cooperation is realized by way of interference fit, can also connect or be bolted, be welded to connect etc. fixation by spline
The transmission that the mode of connection realizes and select rotor shaft to rotate synchronously cooperates, and the hold-fast ring in the present embodiment uses the knot of elastic anchor ear
Configuration formula realizes fastening by two junctions of the bolt to its open end, thus achieve the effect that be interference fitted with rotor shaft,
The present embodiment makes rotor shaft and rotating ring realize synchronous rotation by transmission device, and the impact of stable drive no-load is led to simultaneously
The foldable structure for crossing double transmission arms realizes spacing variation, this structure can both guarantee that the rotor shaft transmission stable with rotating ring was matched
It closes, also meets the variation of spacing caused by rotating ring slides axially.
In the present embodiment, the rotating ring with determine ring and be rotatably assorted by thin wall type angular contact ball bearing 21；Using thin wall type
Angular contact ball bearing, which reduces its weight, reduces its volume, so that compact overall structure, thin wall type angular contact ball bearing is served only for
Realize the relative rotation for determining ring and rotating ring, it is sliding to be separately respectively subjected to axial straight line by inner ring sleeve and thin wall type angular contact ball bearing
Dynamic and circumferentially rotate, thin wall type angular contact ball bearing extends thin relative to the swing for determining ring and rotating ring not generating period
The service life of wall-shaped angular contact ball bearing, the upper and lower end of angular contact ball bearing, which is respectively arranged with, determines ring cowling 22 and retaining ring
23 position for the end to bearing, determine ring cowling 22 and retaining ring 23 and determine ring or rotating ring to be cooperatively connected by screw thread pair,
The upper and lower end of middle angular contact ball bearing is respectively to determine to set between ring cowling 22 and rotating ring close to main paddle one end and far from main paddle one end
It is equipped with for dust-proof O-ring seal 27.
In the present embodiment, slip ring 25 is provided between the inner ring sleeve and rotor shaft；Piston ring can be used in slip ring,
Can be multiple along inner ring sleeve axial direction setting, slip ring housing can be realized with it by interference fit in rotor shaft is driven cooperation, this
When inner ring sleeve inner circle be fitted in slip ring outer circle and realize sliding axially for opposite rotor shaft with respect to sliding, certain slip ring can be embedding
Enter in inner ring sleeve inner circle, the axially slidable housing of slip ring passes through gap in rotor shaft between inner ring sleeve and rotor shaft
Cooperation, slip ring can circumferentially to drive inner ring sleeve realization to slide axially, this structure be reduced and is revolved for sliding along rotor shaft at this time
The contact area of wing axis, reduces frictional dissipation, improves transmission efficiency, while can reduce the abrasion of inner ring sleeve or rotor shaft,
It prolongs its service life, when wear occurs, only needs to change slip ring, reduce maintenance cost.
In the present embodiment, the tilt component further includes several movement pull rods 10 and pitch-change-link 11, and the movement is drawn
Bar one end and displacement driving device transmission cooperation the other end and determine ring by revolute pair mating connection, described pitch-change-link one end and
Rotating ring is rotatably assorted by the revolute pair mating connection other end and the pitch hinge of main paddle；Along determining, ring is circumferential uniformly to be divided movement pull rod
Cloth, each movement pull rod match independent displacement driving device, and movement pull rod quantity is no less than two, for ensure its stability and
Adjustment precision optimal setting three or three or more, setting there are three movement pull rod and is in 120 ° of central angles respectively in the present embodiment
It is circumferentially uniformly distributed along ring is determined, displacement driving device uses electric steering engine, and the output shaft of steering engine is sequentially connected with swing arm 24, swing arm
It is rotatably assorted with movement tie rod end by hinge or joint ball bearing, swing arm acts pull rod, determines ring and rotor shaft is formed
Crank block slider structure, paddle press from both sides 8 outer circles and are connected with rocker arm 9, pitch hinge tie point of the rocker arm 9 as pitch-change-link and main paddle, due to
Main blade is two, therefore there are two pitch-change-link settings, the quantity of pitch-change-link and the number of main blade match, if main blade
The quantity of more than two, pitch-change-link is increase accordingly, and details are not described herein again；Two pitch-change-links 11 are distinguished by joint ball bearing
Rocker arm realization with two paddle folders is rotatably assorted, this structure makes its hinged place have load-carrying ability big, and shock resistance is anticorrosive, resistance to
Abrasion, Self-aligning, the advantages that having lubricated, rotor shaft, rotating ring, pitch-change-link and rocker arm constitute another group of crank block knot
The power output of displacement driving device to main blade is realized that displacement is adjusted by two groups of crank block slider structures, this transmission knot by structure
Structure stable transmission, both realized power transmission or while can meet the requirement of caused spacing variation when pitch slides axially,
It can be realized by multi-link structure and be driven over long distances simultaneously, it is possible to increase in the arrangement spacing of rotor shaft axial direction, so that each zero
Part is easy to arrange.
In the present embodiment, the movement pull rod and rotation centerline, pitch-change-link and the rotating ring at ring revolute pair cooperation are determined
Rotation centerline, anti-twisting equipment at revolute pair cooperation are generally aligned in the same plane with the rotation centerline determined at ring revolute pair cooperation
It is interior；This structure act pull rod for determine ring supporting point and pitch-change-link for rotating ring supporting point and anti-twisting equipment relative to
The supporting point for determining ring is located in same Plane of rotation, ensure that movement of the vertical and horizontal period away between is independent, longitudinal and horizontal
To period absolutely not interfered away between, in conjunction with three movement pull rods along determining the circumferentially equally distributed structure feature of ring so that
The stress for determining ring and rotating ring is improved, and one group of transmission device of setting can meet transmission and require, and simplify overall structure, brief
Cost, certainly, anti-twisting equipment are not limited to one group, can circumferentially be uniformly arranged multiple groups along ring is determined, details are not described herein again.
In the present embodiment, there are two sealing rings 26, the slip ring to be located at two for setting between the inner ring sleeve and rotor shaft
Between a sealing ring, by the way that slip ring to be sealed in an airtight cavity by sealing ring, achieve the effect that dustproof and waterproof, so that
Slip ring sliding is smooth, while avoiding abrasion caused by external impurity pollution.
In the present embodiment, the blade leading edge solidification of the main paddle has nickel alloy electricity cast packet iron, the blade integrated molding
And use carbon fiber-epoxy composite material；Edge when blade leading edge is blade rotation windward, passes through nickel alloy electricity cast packet
The solidification of iron makes its front edge side improve anti-sandstone ability and service life, this structure makes the Forward of blade center improve blade
It trembles stability, reduces blade hinge moment.
The present embodiment further includes a kind of helicopter, helicopter Helicopter Main paddle displacement drive system applications described above
In the helicopter.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to compared with
Good embodiment describes the invention in detail, those skilled in the art should understand that, it can be to skill of the invention
Art scheme is modified or replaced equivalently, and without departing from the objective and range of technical solution of the present invention, should all be covered at this
In the scope of the claims of invention.
Claims (10)
1. a kind of Helicopter Main paddle displacement drive system, it is characterised in that: including for make each blade of main paddle realize it is independent or
The pitch component of the independent displacement in part and displacement driving device for drive incline disk component；The pitch component packet
Pitch is included, the pitch is fixedly connected on universal joint and can rotate in company with universal joint, outside the universal joint and inner ring sleeve
Circle connection, the inner ring sleeve for cover in the rotor shaft of main paddle and with its axially slidable mating connection.
2. Helicopter Main paddle displacement drive system according to claim 1, it is characterised in that: the pitch includes setting
It sets on universal joint and is rotated synchronously with rotor shaft and realize the rotating ring adjusted to main blade displacement, determined with what rotating ring was rotatably assorted
Ring is determined ring and is connect with displacement driving device output end.
3. Helicopter Main paddle displacement drive system according to claim 2, it is characterised in that: described to determine to be connected on ring
For limiting at least one set of anti-twisting equipment for determining ring rotation, anti-twisting equipment described in every group includes the first pivoted arm being rotatably assorted and the
Two pivoted arms, first pivoted arm free end and determine ring by revolute pair mating connection, the free end of second pivoted arm for
Helicopter body is cooperatively connected by revolute pair.
4. Helicopter Main paddle displacement drive system according to claim 2, it is characterised in that: further include being used for and rotor
The hold-fast ring of axis transmission cooperation, the hold-fast ring are connected with rotating ring to drive rotating ring is synchronous with rotor shaft to turn by transmission device
It is dynamic；The transmission device includes the first transmission arm and the second transmission arm being rotatably assorted, first transmission arm and the second transmission
The free end of arm is cooperatively connected with hold-fast ring and rotating ring by revolute pair respectively.
5. Helicopter Main paddle displacement drive system according to claim 2, it is characterised in that: the rotating ring leads to ring is determined
Thin wall type angular contact ball bearing is crossed to be rotatably assorted.
6. Helicopter Main paddle displacement drive system according to claim 2, it is characterised in that: the inner ring sleeve and rotor
Slip ring is provided between axis.
7. Helicopter Main paddle displacement drive system according to claim 3, it is characterised in that: the tilt component also wraps
Several movement pull rods and pitch-change-link are included, described movement pull rod one end and the transmission of displacement driving device cooperate the other end and determine ring
It is cooperatively connected by revolute pair, described pitch-change-link one end and rotating ring are used for and main paddle by the revolute pair mating connection other end
Pitch hinge is rotatably assorted.
8. Helicopter Main paddle displacement drive system according to claim 7, it is characterised in that: the movement pull rod and fixed
The rotation centerline at rotation centerline, pitch-change-link and rotating ring revolute pair cooperation, anti-twisting equipment at ring revolute pair cooperation with
Determine the rotation centerline at ring revolute pair cooperation to be in the same plane.
9. Helicopter Main paddle displacement drive system according to claim 6, it is characterised in that: the inner ring sleeve inner circle is set
It is equipped with for sealing two sealing rings between inner ring sleeve and rotor shaft, the slip ring is located between two sealing rings.
10. a kind of helicopter, it is characterised in that: the driving system of Helicopter Main paddle displacement described in claim 1 to 9 any one
System is applied to the helicopter.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811313483 | 2018-11-06 | ||
| CN2018113134835 | 2018-11-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109466747A true CN109466747A (en) | 2019-03-15 |
Family
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811639509.5A Withdrawn CN109466747A (en) | 2018-11-06 | 2018-12-29 | Helicopter Main paddle displacement drive system and helicopter |
| CN201822254338.6U Active CN210027884U (en) | 2018-11-06 | 2018-12-29 | Helicopter pitch-variable linkage system and helicopter |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822254338.6U Active CN210027884U (en) | 2018-11-06 | 2018-12-29 | Helicopter pitch-variable linkage system and helicopter |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN109466747A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111332462A (en) * | 2020-02-24 | 2020-06-26 | 北京理工大学 | Portable small-sized cylinder type coaxial reverse-propeller three-blade rotor type unmanned aerial vehicle |
| CN115783243A (en) * | 2021-09-09 | 2023-03-14 | 中国科学院沈阳自动化研究所 | Rotor unmanned aerial vehicle hub system verts |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109466747A (en) * | 2018-11-06 | 2019-03-15 | 珠海隆华直升机科技有限公司 | Helicopter Main paddle displacement drive system and helicopter |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111332462A (en) * | 2020-02-24 | 2020-06-26 | 北京理工大学 | Portable small-sized cylinder type coaxial reverse-propeller three-blade rotor type unmanned aerial vehicle |
| CN115783243A (en) * | 2021-09-09 | 2023-03-14 | 中国科学院沈阳自动化研究所 | Rotor unmanned aerial vehicle hub system verts |
Also Published As
| Publication number | Publication date |
|---|---|
| CN210027884U (en) | 2020-02-07 |
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