CN109466750A - Helicopter Main paddle assembly and helicopter - Google Patents

Abstract

The invention discloses a kind of Helicopter Main paddle assembly and helicopters, including main paddle, the main drive of the main paddle rotation of driving, 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, and the axially slidable set of inner ring sleeve is in the rotor shaft of main paddle；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

Helicopter Main paddle assembly and helicopter

Technical field

The invention belongs to Helicopter Technology field, in particular to a kind of Helicopter Main paddle assembly and helicopter.

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 assembly and helicopter, improve the stress of pitch, reduction is inclined The service life of swash plate, and it is independent that the pitch horizontal and vertical period is moved away between.

Helicopter Main paddle assembly of the invention, including main paddle, the main drive of the main paddle rotation of driving, for keeping main paddle each Blade realizes the pitch component of independence or the independent displacement in part and the displacement driving device for drive incline disk component；Institute Stating pitch component includes pitch, and the pitch is fixedly connected on universal joint and can rotate in company with universal joint, and described ten thousand The connection of Xiang Jieyu inner ring sleeve outer circle, the axially slidable set of inner ring sleeve is in the rotor shaft of main paddle.Pass through main drive It drives the rotation of rotor shaft to drive main paddle to rotate, pitch component is made by displacement driving device drive incline disk component It drives main blade to rotate by center axis of its installation axle, the change of main blade angle is realized, to reach the mesh of main paddle displacement , it can reach the independence of multiple main paddle blade displacements by the slope characteristic of pitch component, reduce each paddle when displacement Leaf influences each other, and the helicopter particularly with double blades formula can meet more, it can be achieved that two completely self-contained displacements of blade Displacement requirement under complex working condition, improves the flight stability of helicopter, drives pitch component to realize axis by inner ring sleeve To sliding, inner ring sleeve 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 is not used in by pitch receiving inner ring sleeve and undertakes torque, and pitch is used to undertake the function of torque and wallowing motion, It need to only be slided in company with inner ring sleeve, and without independently undertaking sliding function, Each performs its own functions for both inner ring sleeve and pitch, be tied by this Structure improves the stress of inner ring sleeve and pitch, reduces the risk of inner ring sleeve and pitch crack damage, improves inner ring sleeve With the service life of pitch, the stability of system is improved.

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.Displacement driving device is driven It is dynamic to determine ring in company with universal joint realization swing, determine ring and is slided together with rotating ring swing or opposite rotor shaft so that realization is to each main blade Displacement adjust, by the pitch hinge rotation of the sliding or the main paddle of wobble drive relative to rotor shaft of rotating ring to which realization is to main paddle The displacement of leaf is adjusted.

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 the hold-fast ring cooperated with rotor shaft transmission, the hold-fast ring is connected by transmission device and rotating ring It connects to drive rotating ring and rotor shaft to rotate synchronously；The transmission device includes the first transmission arm being rotatably assorted and the second transmission The free end of arm, first transmission arm and the second transmission arm is cooperatively connected with hold-fast ring and rotating ring by revolute pair respectively. By transmission device rotor shaft and rotating ring are realized to rotate synchronously, the impact of stable drive no-load, while passing through double transmissions The foldable structure of arm realizes spacing variation, this structure can both guarantee that rotor shaft cooperated with the stable transmission of rotating ring, and also meet 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 is respectively subjected to axial linear slide and circumferential direction by inner ring sleeve and thin wall type angular contact ball bearing Rotation, thin wall type angular contact ball bearing extend thin wall type angular contact relative to the swing for determining ring and rotating ring not generating period The service life of ball bearing.

Further, slip ring is provided between the inner ring sleeve and rotor shaft.Slip ring 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 and the pitch hinge of main paddle are rotatably assorted.This drive mechanism stable transmission had both realized power biography The dynamic requirement that can also meet caused spacing variation when pitch slides axially simultaneously, while length can be realized by multi-link structure Distance transmission, 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, so that determining the stress of ring and rotating ring is improved, one group of transmission device of setting can meet Transmission requires, and simplifies overall structure, brief cost.

Further, there are two sealing ring, the slip ring is located at two sealings for setting between the inner ring sleeve and rotor shaft Between circle.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.

The invention also includes a kind of helicopter, Helicopter Main paddle assembly described above is applied to the helicopter.This is straight The machine of liter can reach the independence of multiple main paddle blade displacements, and each blade influences each other when reducing displacement, particularly with double The helicopter of oar blade type is, it can be achieved that two completely self-contained displacements of blade, can meet the displacement requirement under increasingly complex operating condition, mention The high flight stability of helicopter.

Beneficial effects of the present invention:

Helicopter Main paddle assembly of the invention can provide the main paddle rotation of power drive for providing master by main drive Power, by displacement driving device realize blade displacement, thus realize the steering of helicopter, hovering, etc. act, pass through two sets The collective effect of drive system realize helicopter take off and various operating conditions under offline mode；

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；

The present invention can reach the independence of multiple main paddle blade displacements by the slope characteristic of pitch component, reduce change Away from when each blade influence each other, the helicopter particularly with double blades formula, it can be achieved that two completely self-contained displacements of blade, The displacement requirement under increasingly complex operating condition can be met, improve the flight stability of helicopter；

Anti-twisting equipment of the present invention will not be circumferentially subjected to displacement determining ring, not will cause shock loading, reduced and determine ring stress Deformation occurs and the probability of fracture failure, improves the stability of system, the anti-twisting equipment of this structure can by the first pivoted arm and The folding of second pivoted arm, which is realized, determine the variation of spacing between ring and helicopter body, during variation spacing anti-twisting equipment and its Without frictional dissipation between his component, not will cause the risk of anti-twisting equipment strength reduction, both had stable transmission characteristic or Stabilization, the characteristic without friction variation spacing are had both；

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 respectively subjected to axial linear slide and circumferentially rotates, thin wall type angular contact ball bearing is relative to determining ring and week does not occur for rotating ring The swing of phase property extends 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 transmission device 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；

It is as shown in the figure: the Helicopter Main paddle assembly of the present embodiment, the main drive rotated including main paddle, the main paddle of driving, For making each blade of main paddle realize the pitch component of independence or the independent displacement in part and for the change of drive incline disk component Away from driving device 2；The pitch component includes pitch, and the pitch is fixedly connected on universal joint and can be in company with universal Section rotation, the universal joint are connect with 12 outer circle of inner ring sleeve, rotor shaft 3 of the axially slidable set of inner ring sleeve in main paddle On；It drives the rotation of rotor shaft to drive main paddle to rotate by main drive, passes through displacement driving device drive incline disk Component rotates the main blade of pitch Component driver by center axis of its installation axle, realizes the change of main blade angle, from And achieving 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 are driven using electric steering engine, and it is existing all kinds of to be not limited to that traditional inner rotor motor can also be used Motor form such as external rotor electric machine etc., details are not described herein again, can reach multiple main paddle paddles by the slope characteristic of pitch component The independence of leaf displacement, each blade influences each other when reducing displacement, helicopter particularly with 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, improve the flight stability of helicopter Property, in the present embodiment by taking the helicopter of double blades formula as an example, when flight, can be counted in real time by central processing unit and related algorithm The displacement characteristic that two blades need when calculating under helicopter such as takes off, turns to, hovers, moves horizontally at the various operating conditions, to adjust Whole pitch component slide axially distance and tilt angle meet two blades displacement requirement；It is driven and is tilted by inner ring sleeve The realization of disk component slides axially, and inner ring sleeve is served only for realizing the function of sliding, therefore pitch need to only undertake and rotate relative to rotor shaft Function, i.e. torque bears inner ring sleeve by pitch and is not used in and undertakes torque, and pitch is for undertaking torque and inclining The function of tiltedly swinging need to only be slided in company with inner ring sleeve, and without independently undertaking sliding function, both inner ring sleeve and pitch are respectively taken charge of Its duty improves the stress of inner ring sleeve and pitch through this structure, reduces the risk of inner ring sleeve and pitch crack damage, The service life for improving inner ring sleeve and pitch improves 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 and determine the relative rotation of ring and rotating ring, by inner ring sleeve and thin wall type angular contact ball bearing be respectively subjected to axial linear slide with And circumferentially rotate, thin wall type angular contact ball bearing extends thin wall type relative to the swing for determining ring and rotating ring not generating period The service life of angular contact ball bearing, the upper and lower end of angular contact ball bearing, which is respectively arranged with, determines ring cowling 22 and the use of retaining ring 23 It is positioned in the end to bearing, determines ring cowling 22 and retaining ring 23 and determine ring or rotating ring to be cooperatively connected by screw thread pair, wherein angle The upper and lower end of contact ball bearing is respectively to determine to be provided between ring cowling 22 and rotating ring close to main paddle one end and far from main paddle one end 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, and Helicopter Main paddle assembly described above is applied to 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 assembly, it is characterised in that: including main paddle, the main drive of the main paddle rotation of driving, for making Main each blade of paddle realizes that the pitch component of independence or the independent displacement in part and the displacement for drive incline disk component drive Device；The pitch component includes pitch, and the pitch is fixedly connected on universal joint and can rotate in company with universal joint, The universal joint is connect with inner ring sleeve outer circle, and the axially slidable set of inner ring sleeve is in the rotor shaft of main paddle.

2. Helicopter Main paddle assembly according to claim 1, it is characterised in that: the pitch includes being arranged in universal joint It is upper and rotates synchronously and realize the rotating ring adjusted to main blade displacement with rotor shaft, determine ring with what rotating ring was rotatably assorted, determine ring and The connection of displacement driving device output end.

3. Helicopter Main paddle assembly according to claim 2, it is characterised in that: described to determine to be connected on ring for limiting calmly At least one set of anti-twisting equipment of ring rotation, anti-twisting equipment described in every group includes the first pivoted arm and the second pivoted arm being rotatably assorted, institute It states the first pivoted arm free end and determines ring and be cooperatively connected by revolute pair, the free end of second pivoted arm is used for and helicopter body It is cooperatively connected by revolute pair.

4. Helicopter Main paddle assembly according to claim 2, it is characterised in that: further include armful with rotor shaft transmission cooperation Tight ring, the hold-fast ring are connect with rotating ring by transmission device to drive rotating ring and rotor shaft to rotate synchronously；The transmission dress Set the first transmission arm and the second transmission arm including being rotatably assorted, the free end difference of first transmission arm and the second transmission arm It is cooperatively connected with hold-fast ring and rotating ring by revolute pair.

5. Helicopter Main paddle assembly according to claim 2, it is characterised in that: the rotating ring passes through thin wall type angle with ring is determined Contact ball bearing is rotatably assorted.

6. Helicopter Main paddle assembly according to claim 2, it is characterised in that: be arranged between the inner ring sleeve and rotor shaft There is slip ring.

7. Helicopter Main paddle assembly according to claim 3, it is characterised in that: the tilt component further includes several dynamic Make pull rod and pitch-change-link, described movement pull rod one end and the transmission of displacement driving device, which cooperate the other end and determine ring, passes through revolute pair It is cooperatively connected, described pitch-change-link one end is matched with rotating ring by the revolute pair mating connection other end and the pitch hinge rotation of main paddle It closes.

8. Helicopter Main paddle assembly according to claim 7, it is characterised in that: the movement pull rod is matched with ring revolute pair is determined The rotation centerline at rotation centerline, pitch-change-link and rotating ring revolute pair cooperation, anti-twisting equipment at conjunction and determine ring revolute pair Rotation centerline at cooperation is in the same plane.

9. Helicopter Main paddle assembly according to claim 6, it is characterised in that: be arranged between the inner ring sleeve and rotor shaft There are two sealing ring, the slip ring is located between two sealing rings.

10. a kind of helicopter, it is characterised in that: Helicopter Main paddle assembly described in claim 1 to 9 any one is applied to institute State helicopter.