CN109466748A - Helicopter Main paddle displacement inclinator and helicopter - Google Patents

Abstract

The invention discloses a kind of Helicopter Main paddle displacement inclinator and helicopters, including for making each blade of main paddle realize the pitch of independence or the independent displacement in part, 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, 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 inclinator, 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, Each performs its own functions for the two, 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 displacement inclinator and helicopter

Technical field

The invention belongs to Helicopter Technology field, in particular to a kind of Helicopter Main paddle displacement inclinator 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, its vertical and horizontal period of pitch moves away between to be interfered with each other, cause its fix cup body and rotation cup body Equal components unbalance stress, fixes cup body and rotation cup body is easily damaged, and it is lower to control precision.

Summary of the invention

In view of this, the present invention provides a kind of Helicopter Main paddle displacement inclinator and helicopter, improve pitch by Power, 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 inclinator of the invention, including for making each blade of main paddle realize that independent or part is independent The pitch of displacement, the pitch are fixedly connected on universal joint and can rotate in company with universal joint, the universal joint and inner ring Cover outer circle connection, the inner ring sleeve for cover in the rotor shaft of main paddle and with its axially slidable mating connection.By inclining The slope characteristic of swash plate component can reach the independence of multiple main paddle blade displacements, reduce the mutual shadow of each blade when displacement It rings, the helicopter particularly with double blades formula is, it can be achieved that two completely self-contained displacements of blade, can meet under increasingly complex operating condition Displacement requirement, improve the flight stability of helicopter, by inner ring sleeve drive pitch component realization slide axially, inner ring Set is served only for realizing function in axial sliding, therefore pitch need to only undertake the function relative to rotor shaft rotation, i.e. torque is logical Cross that pitch is born and inner ring sleeve is not used in and undertakes torque, pitch is used to undertake the function of torque and wallowing motion, only needs It is slided in company 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 inclination The service life of disk improves the 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.Determining ring also has the function of swing, the driving of displacement driving device determine ring with It realizes and swings with universal joint, determine ring together with rotating ring swing or sliding to realize that the displacement to each main blade is adjusted.

Further, the inner ring sleeve inner circle be provided with for cover the slip ring in rotor shaft；This structure reduce with The contact area of rotor shaft, reduces frictional dissipation, improves transmission efficiency, while can reduce the mill of inner ring sleeve or rotor shaft Damage, prolongs its service life, when wear occurs, only needs to change slip ring, reduce maintenance cost.

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, the both ends of the angular contact ball bearing, which are respectively arranged with, determines ring cowling and retaining ring for the end to bearing Portion's positioning determines ring cowling and retaining ring and determines ring or rotating ring to be cooperatively connected by screw thread pair；By determining ring cowling and retaining ring pair Bearing realizes that positioning also forms simple sealing to bearing both ends simultaneously.

Further, the universal joint includes inner ring and outer ring, and the inner ring and inner ring sleeve pass through the articulated shaft radially extended Realization is rotatably assorted, and wherein outer ring and inner ring pass through the articulated shaft realization radially extended and be rotatably assorted, the inner ring and inner ring sleeve Articulated shaft perpendicular to outer ring and inner ring articulated shaft；By the universal joint of this double-ring structure, facilitate its space layout, it is universal The inside and outside circle of section can be coaxially disposed with inner ring sleeve, while the outer ring of universal shaft is used at the same time as rotating ring, simple through this structure The overall structure of inclinator is changed, while having made compact-sized, each components reach good consistency, improve system Stability；

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.

Further, determine to be provided on ring the first articulated section for being cooperatively connected with movement pull rod revolute pair and with anti-torsion The second articulated section that device revolute pair is cooperatively connected is provided on the rotating ring for being cooperatively connected with pitch-change-link revolute pair Third articulated section, first, second, and third articulated section rotation centerline are in the same plane；This structure is anti-without considering Device, pitch-change-link and the accuracy of manufacture for acting pull rod are turned round, converts inclinator for the accuracy relation of three through this structure Assembly precision, simplify the requirement of overall precision；This structure act pull rod for determine ring supporting point and pitch-change-link for The supporting point and anti-twisting equipment of rotating ring are located in same Plane of rotation relative to the supporting point for determining ring, ensure that vertical and horizontal Movement of the period away between is independent, and the period of vertical and horizontal is absolutely not interfered away between, in conjunction with three movement pull rods along fixed The circumferentially equally distributed structure feature of ring, so that determining the stress of ring and rotating ring is improved, one group of anti-twisting equipment of setting can expire Foot transmission requires, and simplifies overall structure, brief cost.

Further, it is described determine ring inner circle and rotating ring outer circle it is stepped and in diagonal setting be wrapped in angular contact ball axis Hold inner ring and outer ring diagonal angle；This structure forms good package location structure to bearing, and the installation of bearing is facilitated to position.

The invention also includes a kind of helicopter, Helicopter Main paddle displacement inclinator described above is applied to described go straight up to Machine.This helicopter can reach the independence of multiple main paddle blade displacements, and each blade influences each other when reducing displacement, especially Helicopter for double blades formula is, it can be achieved that two completely self-contained displacements of blade, can meet the displacement under increasingly complex operating condition It is required that improving the flight stability of helicopter.

Beneficial effects of the present invention:

Pitch realization is driven to slide axially by inner ring sleeve in inclinator of the invention, inner ring sleeve is served only for realizing axial The function of sliding, torque are not used in by pitch receiving inner ring sleeve and undertake torque, and pitch is for undertaking torque and inclination The function of swing only need to be rotated and be slided in company with inner ring sleeve, and without independently undertaking rotation and sliding function, the two respectively takes charge of it Duty improves the stress of inner ring sleeve and pitch through this structure, reduces the risk of inner ring sleeve and pitch crack damage, mentions The high service life of inner ring sleeve and pitch；

Inclinator of the invention can reach the independence of multiple main paddle blade displacements, reduce the phase of each blade when displacement It mutually influences, the helicopter particularly with double blades formula is, it can be achieved that two completely self-contained displacements of blade, can meet increasingly complex work Displacement requirement under condition, improves the flight stability of helicopter,

The present invention passes through the universal joint of double-ring structure, facilitates its space layout, the inside and outside circle and inner ring sleeve of universal joint can Coaxial arrangement, while the outer ring of universal shaft is used at the same time as rotating ring, simplifies the overall structure of inclinator through this structure, Make compact-sized simultaneously, each components reach good consistency, improve the stability of system；

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；

This reality invention slip ring inner circle contacts realization cooperation with rotor shaft, and slip ring is reduced for undertaking linear slide With the contact area of rotor shaft, frictional dissipation is reduced, improves transmission efficiency, while being easily changed and repairing；

To guarantee that the first, second, and third articulated section rotation centerline is located at after the assembly is completed same determining ring and rotating ring by the present invention In one plane, this structure is not necessarily to consider anti-twisting equipment, pitch-change-link and the accuracy of manufacture for acting pull rod, through this structure It converts the accuracy relation of three to the assembly precision of inclinator, simplifies the requirement of overall precision.

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 that each blade of main paddle is made to realize independence or the independent displacement in part in pitch component Component, the pitch is fixedly connected on universal joint and can rotate in company with universal joint, outside the universal joint and inner ring sleeve 12 Circle connection, the axially slidable set of inner ring sleeve is in the rotor shaft 3 of main paddle；Turning for rotor shaft is driven by main drive It moves that main paddle is driven to rotate, makes the main blade of pitch Component driver with it by displacement driving device drive incline disk component Installation axle is the rotation of center axis, realizes the change of main blade angle, to 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 is driven using electric steering engine, It is not limited to that existing all kinds of motor forms such as external rotor electric machine etc. can also be used in traditional inner rotor motor, it is no longer superfluous herein It states, 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, is with the helicopter of double blades formula in the present embodiment Example can be calculated when flight in real time by central processing unit and related algorithm and work as helicopter and take off, turn to, hover, move horizontally When etc. under various operating conditions two blades need displacement characteristic, so as to adjust pitch component slide axially distance and inclination angle Degree meets the displacement requirement of two blades；The realization of pitch component is driven to slide axially by inner ring sleeve, inner ring sleeve is served only for reality Now function in axial sliding, therefore pitch need to only undertake the function relative to rotor shaft rotation, i.e. torque is held by pitch By and inner ring sleeve is not used in and undertakes torque, pitch is used to undertake the function of torque and wallowing motion, only need to be in company with inner ring sleeve Sliding, without independently undertaking sliding function, Each performs its own functions for both inner ring sleeve and pitch, improve through this structure inner ring sleeve with The stress of pitch reduces the risk of inner ring sleeve and pitch crack damage, improves the use longevity of inner ring sleeve and pitch Life, 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；By the universal joint of this double-ring structure, facilitate its space layout, the inside and outside circle and inner ring sleeve of universal joint can Coaxial arrangement, while the outer ring of universal shaft is used at the same time as rotating ring, simplifies the overall structure of inclinator through this structure, Make compact-sized simultaneously, each components reach good consistency, improve the stability of system；

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 and swing or slided to real together with rotating ring Now the displacement of each main blade is adjusted；Certainly, the structure of pitch is not limited to determine the twin nuclei of ring and rotating ring, can set It is set to independent rotating ring, displacement driving device needs to rotate in company with rotor shaft at this time, therefore can be arranged in rotor shaft and be driven with it Displacement driving device is installed on mounting rack and rotates together in company with rotor shaft by the mounting rack of cooperation, 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, makes that it is equally loaded, anti-twisting equipment will not be circumferentially subjected to displacement determining ring, not will cause shock loading and rigidity is touched It hits, reduces and determine ring stress deformation occurs and the probability of fracture failure, improve the stability of system, the anti-twisting equipment of this structure The variation for determining spacing between ring and helicopter body can be realized by the folding of the first pivoted arm and the second pivoted arm, change the mistake of spacing Without frictional dissipation between anti-twisting equipment and other component in journey, it not will cause the risk of anti-twisting equipment strength reduction, both had The characteristic of stable transmission has also had both stabilization, the characteristic without friction variation spacing.

It further include that the hold-fast ring cooperated is driven with rotor shaft in the present embodiment, 18, 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 mode of connection realizes the transmission cooperation of synchronous rotation, and specific details are not described herein again, and the present embodiment to revolve by transmission device Wing axis and rotating ring, which are realized, to be rotated synchronously, the impact of stable drive no-load, while realizing spacing by the structure of double transmission arms Variation, while rotating ring can be met and required in axial sliding along rotor shaft；

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；

In the present embodiment, it is described determine ring inner circle and rotating ring outer circle it is stepped and in diagonal setting be wrapped in angular contact Ball bearing inner race and outer ring diagonal angle；This structure forms good package location structure to bearing, facilitates the installation of bearing fixed Position；

In the present embodiment, the upper and lower end of angular contact ball bearing be respectively arranged with determine ring cowling 22 and retaining ring 23 for pair The end of bearing positions, and determines ring cowling 22 and retaining ring 23 and determine ring or rotating ring to be cooperatively connected by screw thread pair, wherein angular contact The upper and lower end of ball bearing is respectively close to main paddle one end and far from main paddle one end, by determining ring cowling and retaining ring to bearing reality Now positioning also forms simple sealing to bearing both ends simultaneously, to guarantee good sealing performance above bearing, determines ring cowling 22 It is provided between rotating ring for dust-proof O-ring seal 27, prevents dust or other impurities from falling into bearing by sealing ring Portion, it is powerful distinguished and admirable due to being formed when gravity and main paddle rotate, it is distinguished and admirable to run from top to bottom, thus bearing upper end be easy into Ash, and bearing lower end is not easy dust stratification, therefore only need to determine that sealing ring is arranged at ring cowling, no setting is required at retaining ring sealing device, Certainly, by retaining ring and the matching relationship formation sealing structure between ring and rotating ring can be determined at retaining ring, details are not described herein again；

In the present embodiment, the inner ring sleeve inner circle is provided with slip ring 25, and 25 sets of the slip ring is in rotor shaft；Sliding Piston ring can be used in ring, can be multiple along inner ring sleeve axial direction setting, and slip ring housing can be matched with it by interference in rotor shaft It closes and realizes transmission cooperation, inner ring sleeve inner circle, which is fitted in slip ring outer circle, at this time realizes that the axial direction of opposite rotor shaft is sliding with respect to sliding Dynamic, certain slip ring is embeddable in inner ring sleeve inner circle, and the axially slidable housing of slip ring is in rotor shaft, inner ring sleeve and rotation By clearance fit between wing axis, slip ring can circumferentially slide that inner ring sleeve realization is driven to slide axially along rotor shaft at this time, This structure reduces the contact area with rotor shaft, reduces frictional dissipation, improves transmission efficiency, while can reduce inner ring sleeve Or the abrasion of 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, movement pull rod quantity much with 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 Circumferentially be uniformly distributed along determine ring, displacement driving device uses driving motor, and the output end of motor is connected with swing arm 24, swing arm with move Make tie rod end to be rotatably assorted by hinge or joint ball bearing, swing arm, movement pull rod determine ring and rotor shaft formation crank Slide block 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 paddle Leaf 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 is more than Two, the quantity of pitch-change-link is increase accordingly, and details are not described herein again；Two pitch-change-links 11 are by joint ball bearing respectively with two The rocker arm realization of a paddle folder is rotatably assorted, this structure makes its hinged place have load-carrying ability big, shock resistance, anticorrosive, wear-resistant, Self-aligning, the advantages that having lubricated, rotor shaft, rotating ring, pitch-change-link and rocker arm constitute another group of crank block slider structure, pass through The power output of displacement driving device to main blade is realized that displacement is adjusted by two groups of crank block slider structures, and the transmission of this drive mechanism is steady It is fixed, both realized power transmission or while the requirement that caused spacing changes when pitch slides axially can be met, pass through simultaneously Multi-link structure can be realized and is 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 cloth It sets.

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；To guarantee that three is in the same plane, first for being cooperatively connected with movement pull rod revolute pair is provided on determining ring Articulated section and the second articulated section being cooperatively connected with anti-twisting equipment revolute pair are provided on the rotating ring and are used for and pitch-change-link The third articulated section that revolute pair is cooperatively connected guarantees that the first, second, and third articulated section is revolved determining ring and rotating ring after the assembly is completed Turn center line to be in the same plane, this structure is not necessarily to consider anti-twisting equipment, pitch-change-link and the manufacture for acting pull rod Precision through this structure converts the accuracy relation of three to the assembly precision of inclinator, simplifies the requirement of overall precision；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 anti-twisting equipment of setting can meet transmission and require, and simplify overall structure, be reduced to This, certainly, anti-twisting equipment is 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 displacement described above inclinator is applied to described straight The machine of liter.

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 inclinator, it is characterised in that: including for making each blade of main paddle realize independence or portion Divide the pitch of independent displacement, the pitch is fixedly connected on universal joint and can rotate in company with universal joint, the universal joint 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.

2. Helicopter Main paddle displacement inclinator according to claim 1, it is characterised in that: the pitch includes setting It rotated synchronously on universal joint and with rotor shaft and realizes the rotating ring adjusted to main blade displacement, determined with what rotating ring was rotatably assorted Ring.

3. Helicopter Main paddle displacement inclinator according to claim 2, it is characterised in that: the inner ring sleeve inner circle setting Have for cover the slip ring in rotor shaft.

4. Helicopter Main paddle displacement inclinator according to claim 2, it is characterised in that: the rotating ring passes through with ring is determined Thin wall type angular contact ball bearing is rotatably assorted.

5. Helicopter Main paddle displacement inclinator according to claim 4, it is characterised in that: the angular contact ball bearing Both ends, which are respectively arranged with, determines ring cowling and retaining ring for the end positioning to bearing, determines ring cowling and retaining ring and determines ring or dynamic Ring is cooperatively connected by screw thread pair.

6. Helicopter Main paddle displacement inclinator according to claim 2, it is characterised in that: the universal joint includes inner ring And outer ring, the inner ring pass through the articulated shaft realization radially extended with inner ring sleeve and are rotatably assorted, wherein outer ring and inner ring pass through diameter It is rotatably assorted to the realization of the articulated shaft of extension, the articulated shaft of the articulated shaft of the inner ring and inner ring sleeve perpendicular to outer ring and inner ring.

7. Helicopter Main paddle displacement inclinator according to claim 3, it is characterised in that: the inner ring sleeve inner circle setting Have for sealing two sealing rings between inner ring sleeve and rotor shaft, the slip ring is located between two sealing rings.

8. according to claim 1 to Helicopter Main paddle displacement inclinator described in 7 any one, it is characterised in that: determine on ring Be provided with for movement pull rod revolute pair be cooperatively connected the first articulated section and with anti-twisting equipment revolute pair be cooperatively connected Second articulated section, is provided with the third articulated section for being cooperatively connected with pitch-change-link revolute pair on the rotating ring, described first, Second and third articulated section rotation centerline be in the same plane.

9. Helicopter Main paddle displacement inclinator according to claim 4, it is characterised in that: described to determine ring inner circle and move Ring outer circle is stepped and is wrapped in angular contact ball bearing inner ring and outer ring diagonal angle in diagonal setting.

10. a kind of helicopter, it is characterised in that: Helicopter Main paddle displacement inclinator described in claim 1 to 9 any one Applied to the helicopter.