CN107140184A - A kind of electromechanical wing flap actuator based on antarafacial angular contact roller bearing - Google Patents
A kind of electromechanical wing flap actuator based on antarafacial angular contact roller bearing Download PDFInfo
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- CN107140184A CN107140184A CN201710353654.6A CN201710353654A CN107140184A CN 107140184 A CN107140184 A CN 107140184A CN 201710353654 A CN201710353654 A CN 201710353654A CN 107140184 A CN107140184 A CN 107140184A
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- Prior art keywords
- antarafacial
- angular contact
- bearing
- contact roller
- roller bearing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C13/00—Control systems or transmitting systems for actuating flying-control surfaces, lift-increasing flaps, air brakes, or spoilers
- B64C13/24—Transmitting means
- B64C13/38—Transmitting means with power amplification
- B64C13/50—Transmitting means with power amplification using electrical energy
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transmission Devices (AREA)
Abstract
The present invention provides a kind of electromechanical wing flap actuator based on antarafacial angular contact roller bearing, belongs to technical field of aerospace.The actuator includes ball-screw, feed screw nut, right part housing, left part housing, right part end cap, left part end cap, angular contact ball bearing, deep groove ball bearing, thrust bearing, bevel gear disk, adjusting gasket, spring, end cap fastener, housing fastener and antarafacial angular contact roller bearing；Antarafacial angular contact roller bearing outer ring is arranged on the shaft shoulder left side inside left shell, is fixed by left end cap.Antarafacial angular contact roller bearing inner ring is socketed in feed screw nut left distal end, by the spring compression on right side in bearing outer ring.Feed screw nut interposition, which is equipped with the left of the shaft shoulder, the shaft shoulder and set inside left shell between shaft shoulder right side, sets bevel gear disk on the right side of thrust bearing, the shaft shoulder.Compact conformation of the present invention, drag torque is stable, and vibrating noise is low, reduces the spillage of material of element, long lifespan, and lubrication is convenient, it is easy to cooling radiating.
Description
Technical field
The present invention relates to technical field of aerospace, a kind of electromechanical wing flap start based on antarafacial angular contact roller bearing is particularly related to
Device.
Background technology
The high-lift system (High-Lift-System) of aircraft is also known as the system of flaps, also referred to as high lift device, typically by preceding
Edge aerofoil, trailing edge aerofoil and its drive device composition.Mainly by slat, extension and wing flap retreat deflection change machine downwards for it
Wing camber and area, lift when being taken off with increasing and resistance during landing, thus shorten take off and slide race away from
From.
Wing flap actuator is the important part of electromechanical type wing flap actuating system (high-lift system), in Electronic Control Unit
Control and monitoring under, output order, controlled motor both direction rotate, output torque.Motor passes through reduction gear
High speed low torque is converted into slow-speed of revolution high torque (HT), reduction gear box carries out the steering of torque transmitting by a pair of bevel gears again,
Helical gear after steering is coupled by spline passes to ball nut by driving moment, and then ball nut rotation utilizes ball band
Dynamic leading screw is for linear motion, one end connection aircraft flap of leading screw, promotes wing flap expansion or withdraws.
Aircraft can be by air aerodynamic loading during taking off or landing.To prevent aerodynamic loading from passing through ball wire
Thick stick reverse drive feed screw nut, has used an anti-reverse-rotation device (no-back assembly), the major function of this device
It is：When drive device driving ball-screw rotation, anti-reverse-rotation device can promote ball-screw in aerodynamic loading torque component
The larger moment of resistance is provided on the direction of driving, and on the direction that aerodynamic loading torque component hinders ball-screw driving, prevented
Inversion set then hardly provides the moment of resistance or only provides the moment of resistance of very little, and such drive device is on two opposite directions
The driving moment of output is it is ensured that roughly the same required for driving ball-screw, it is ensured that effective work of motor.
Anti-reverse-rotation device in existing electromechanical wing flap actuator uses click structure or freewheel clutch knot mostly
Structure provides brake force to limit ball-screw by rotation during axial force in a certain direction using traditional friction plate.
But such structure is often more complicated, to installing and maintenance brings inconvenience, the abrasion of friction plate will certainly also make
Into the decay of brake force, it is impossible to ensure that brake force is consistent all the time very well, and device easily breaks down in use, very
Hardly possible is prevented effectively from brake fade in a longer service life.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of electromechanical wing flap actuator based on antarafacial angular contact roller bearing.
The actuator includes ball-screw, feed screw nut, right part housing, left part housing, right part end cap, left part end cap, angle
Contact ball bearing, deep groove ball bearing, thrust bearing, bevel gear disk, adjusting gasket, spring, end cap fastener, housing fastener and
Antarafacial angular contact roller bearing, wherein, ball-screw runs through whole actuator, and antarafacial angular contact roller bearing is included in a bearing
Circle, a bearing outer ring, a retainer and roller；Left part enclosure interior is provided with the shaft shoulder, and antarafacial angular contact roller bearing outer ring is set
Put on the shaft shoulder left side, be fixed by left part end cap；Antarafacial angular contact roller bearing inner ring is socketed in feed screw nut left distal end, quilt
The spring compression on right side is in bearing outer ring；The interposition of feed screw nut is equipped with the left of the feed screw nut shaft shoulder, the feed screw nut shaft shoulder
It is provided between left part enclosure interior shaft shoulder right side on the right side of thrust bearing, the feed screw nut shaft shoulder and is provided with bevel gear disk；Bore tooth
Wheel disc is provided with two bevel gear dish axle shoulders, two bevel gear dish axle shoulders and sets deep groove ball bearing and angular contact ball axle respectively
Hold, and be fixed by right part housing and right part end cap；Between left part end cap and left part housing, right part housing and right part end cap
It is connected by end cap fastener, left part housing is connected with right part housing by housing fastener.
Wherein, adjusting gasket is set to adjust spring pressure between bearing inner race and spring.
Antarafacial angular contact roller bearing retainer is arranged between antarafacial angular contact roller bearing outer ring and bearing inner race, retainer
Upper setting at least three roller.
Antarafacial angular contact roller bearing outer ring passes through key relative to left part housing stationary, the antarafacial angular contact roller bearing inner ring
It is connected with feed screw nut, bearing inner race is relative with feed screw nut to be slided.
There is gap between antarafacial angular contact roller bearing roller and bearing inner race and bearing outer ring.
Ball-screw is hollow structure.
The roller surface of antarafacial angular contact roller bearing inner ring and bearing outer ring is special surface, to ensure circle that antarafacial is tilting
Post roller is contacted with the raceway formation space curve of bearing inner race and bearing outer ring, can be obtained by following parametric equation inside and outside
The surface equation of raceway：
In formula, Φ is parameter, and scope is 0~2 π, represents the eccentric angle of raceway contact point tangent line；I, O correspond to inside and outside respectively
Enclose curve surface of raceway；R is the hyperboloid of one sheet neck radius of circle where roller axis；Σ is roller axis and raceway axis angle；R is
The radius of roller；XI (O), YI (O), ZI (O) represent the seat of inner ring or outer ring raceway surface points on cartesian coordinate system O-XYZ
Mark.
Moment of resistance size when antarafacial angular contact roller bearing works can pass through specific parameter designing according to actual conditions
To realize, while can also obtain corresponding curve surface of raceway according to parameter.
Said apparatus is applied on the high-lift system of aircraft.
The above-mentioned technical proposal of the present invention has the beneficial effect that：
In such scheme, actuator configurations are compact, drag torque is stable, and vibrating noise is low, roll sliding friction reduces element
Spillage of material, it is additionally convenient with lubrication with the longer life-span, it is easy to the characteristics of cooling radiating.It is specific as follows：
(1) compact conformation.Employ antarafacial angular contact roller bearing and instead of traditional click and be combined with friction plate
Or the structure that freewheel clutch is combined with friction plate, while drag torque is provided, also serves as spring bearing and use；
(2) drag torque is stable, and vibrating noise is low.Combined using skid and replace simple plate friction, improve resistance
The stationarity of torque, and drag torque hardly influenceed by rotation speed change, with good constant moment of force characteristic；
(3) roll sliding friction reduces the spillage of material of element, the longer life-span is made it have, additionally with lubrication side
Just, it is easy to the advantages of cooling is radiated.
Brief description of the drawings
Fig. 1 is the electromechanical wing flap actuator configurations schematic diagram based on antarafacial angular contact roller bearing of the invention；
Fig. 2 is three-dimensional cutaway view of the invention；
Fig. 3 is the coordinate system figure of antarafacial angular contact roller bearing of the present invention；
Fig. 4 is the typical application environment schematic diagram of the present invention；
Fig. 5 is that drive device of the present invention driving ball screw stretches out schematic diagram；
Fig. 6 is that drive device of the present invention driving ball screw withdraws schematic diagram.
Wherein：1- left part end caps；2- left part housings；3- right part housings；4- right part end caps；5- bearing outer rings；6- rollers；7-
Retainer；8- bearing inner races；9- adjusting gaskets；10- springs；11- feed screw nuts；12- thrust bearings；13- bevel gear disks；14-
Deep groove ball bearing；15- angular contact ball bearings；16- ball-screws；17- housing fasteners；18- end cap fasteners；The 19- electromechanics flap
Wing actuator；20- wings；21- wing flaps.
Embodiment
To make the technical problem to be solved in the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and tool
Body embodiment is described in detail.
The present invention provides a kind of electromechanical wing flap actuator based on antarafacial angular contact roller bearing.
As shown in Figure 1 and Figure 2, ball-screw 16 runs through whole actuator, and antarafacial angular contact roller bearing is included in a bearing
Circle 8, bearing outer ring 5, a retainer 7 and a roller 6；The inside of left part housing 2 is provided with outside the shaft shoulder, antarafacial angular contact roller bearing
Circle 5 is arranged on the shaft shoulder left side, is fixed by left part end cap 1；It is left that antarafacial angular contact roller bearing inner ring 8 is socketed in feed screw nut 11
Side end, is pressed in bearing outer ring 5 by the spring 10 on right side；The interposition of feed screw nut 11 is equipped with the feed screw nut shaft shoulder, silk
It is provided with the right side of thrust bearing 12, the feed screw nut shaft shoulder and sets between on the left of the thick stick nut shaft shoulder and on the right side of the inside shaft shoulder of left part housing 2
It is equipped with bevel gear disk 13；Bevel gear disk 13 is provided with two bevel gear dish axle shoulders, two bevel gear dish axle shoulders sets deep respectively
Ditch ball bearing 14 and angular contact ball bearing 15, and be fixed by right part housing 3 and right part end cap 4；Left part end cap 1 and left part shell
It is connected between body 2, right part housing 3 and right part end cap 4 by end cap fastener 18, left part housing 2 is with right part housing 3 by shell
Body fastener 17 is connected, and fastener is bolt.
Adjusting gasket 9 is set to adjust spring pressure between bearing inner race 8 and spring 10.
Antarafacial angular contact roller bearing retainer 7 is arranged between antarafacial angular contact roller bearing outer ring 5 and bearing inner race 8, is protected
Hold and at least three roller 6 is set on frame 7.
Antarafacial angular contact roller bearing outer ring 5 is static relative to left part housing 2, and the antarafacial angular contact roller bearing inner ring 8 leads to
Cross key with feed screw nut 11 to be connected, bearing inner race 8 is relative with feed screw nut 11 to be slided.
There is gap between antarafacial angular contact roller bearing roller 6 and bearing inner race 8 and bearing outer ring 5.
Ball-screw 16 is hollow structure.
Antarafacial angular contact roller bearing used in the present invention is by bearing inner race, bearing outer ring, with raceway coil axis in different
The cylindrical roller and retainer of face arrangement are constituted, and are relied primarily on during work produced by the roller surface contact of roller and bearing inner race
It is relative to roll and sliding friction offer drag torque.
Because roller and raceway coil axis are arranged in space antarafacial, the curved surface where roller axis is standard list leaf hyperbolic
Face, the roller surface of bearing internal external circle is special surface, to ensure the raceway formation space curve of cylindrical roller and bearing inner race
Contact.Inside and outside curve surface of raceway parametric equation is under cartesian coordinate system：
In formula, Φ is parameter, and scope is 0~2 π, represents the eccentric angle of raceway contact point tangent line；I, O correspond to inside and outside respectively
Enclose curve surface of raceway；R is the hyperboloid of one sheet neck radius of circle where roller axis；Σ is roller axis and raceway axis angle；R is
The radius of roller；XI (O), YI (O), ZI (O) represent the seat of inner ring or outer ring raceway surface points on cartesian coordinate system O-XYZ
Mark.
Moment of resistance size when antarafacial angular contact roller bearing works can pass through specific parameter designing according to actual conditions
To realize, while can also obtain corresponding curve surface of raceway according to parameter.
As shown in Figure 3：The main geometric parameters of antarafacial angular contact roller bearing include：(1) single leaf hyperbolic where roller axis
Face neck radius of circle R；(2) roller and raceway axis angle Σ；(3) coordinate Zc of the roller centre to neck circle cross-section (Z=0)；(4)
Roller length b, radius r and number N；(5) XI (O), YI (O), ZI (O) represent that inner ring or outer ring raceway surface points are sat in Descartes
Coordinate on mark system O-XYZ.
The typical application environment of the present invention is as shown in Figure 4.Electromechanical wing flap actuator 19 connects roller screw 16, ball-screw
16 one end is connected with wing flap 21, and the opposite side of wing flap 21 is wing 20.By the driving of motor, control feed screw nut is two-way
Rotation, makes ball-screw 16 stretch out or withdraw, and final control wing flap 21 withdraws or deployed, during reaching that increase is taken off
Resistance when lift and landing, so as to shorten the purpose for taking off and sliding the distance run.
Ball-screw screw mandrel is mainly by air aerodynamic loading, and this load can produce an axial force component and a load
Moment components TLOAD.When feed screw nut driving ball-screw withdraws or stretched out, this load moment component TLOADCan aid in or
Hinder the motion of ball-screw.No matter aerodynamic loading produce load moment TLOADIt is auxiliary or hinders turning for ball-screw
Dynamic, in order to ensure that driver element, i.e. motor effectively work, it drives the driving moment T of ball-screw to both directionMIN
Should be roughly equal.
When ball-screw drives wing flap such as Fig. 5 (stretching) for linear motion to the left, the aerodynamic loading acted on screw mandrel
Two effects will be produced, one is that leading screw will be made to do small axial movement to the left, on the other hand will drive screw nut
Rotate, produce a load-torque TLOAD, while axial movement to the left will excite anti-reverse component operation, produce
One frictional resistance moment TBRAKE.Now drive the minimal torque T needed for ball-screwMINEqual to TLOADPlus what is applied by bearing
Brake force, i.e.,：
TMIN=TLOAD+TBRAKE (small)
Due to now driving moment TMINWith load moment TLOADReversely, in order to which holding torque is balanced, anti-reverse component is provided
Less moment of resistance TBRAKE (small).
Such as Fig. 6, aerodynamic loading is constant, therefore TLOADAlso do not change.Now ball-screw drives wing flap such as Fig. 5 to make to the right directly
Line moves (withdrawal), due to driving moment TMINWith load moment TLOADIn the same direction, if wanting drive screw to act, motor need to only be carried
For very little even without offer driving torque, but this can cause motor operation difficult, and motor has what is be back-driven into
Danger, at this time antarafacial angular contact roller bearing play a role, produce frictional resistance moment, offset the torsion that is produced by aerodynamic loading
Square.Equalising torque relational expression is as follows：
TMIN=-TLOAD+TBRAKE (big)
Due to now driving moment TMINWith load moment TLOADIn the same direction, in order to which holding torque is balanced, anti-reverse component is provided
Larger moment of resistance TBRAKE (big)。
In order that the driving force needed for driving ball-screw toward both direction is roughly equal, i.e., the T in relational expressionMINIt is equal,
It must is fulfilled for：
TLOAD+TBRAKE (small)=-TLOAD+TBRAKE (big)
It can be drawn by above-mentioned equation,
TBRAKE (big)-TBRAKE (small)=2TLOAD
From above formula, when the big moment of resistance and the difference of slight drag square that anti-reversing mechanism is provided are about the two of airborne moment of torsion
Times when, driving ball screw turns required for torque TMINIt is roughly equal.So ensure that the normal fortune of motor
Turn, reach and existing mechanism identical effect.
Described above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, on the premise of principle of the present invention is not departed from, some improvements and modifications can also be made, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (6)
1. a kind of electromechanical wing flap actuator based on antarafacial angular contact roller bearing, it is characterised in that：Including ball-screw (16), silk
Thick stick nut (11), right part housing (3), left part housing (2), right part end cap (4), left part end cap (1), angular contact ball bearing (15),
Deep groove ball bearing (14), thrust bearing (12), bevel gear disk (13), adjusting gasket (9), spring (10), end cap fastener (18),
Housing fastener (17) and antarafacial angular contact roller bearing, wherein, ball-screw (16) runs through whole actuator, the tilting roller of antarafacial
Bearing includes a bearing inner race (8), a bearing outer ring (5), a retainer (7) and roller (6)；In left part housing (2)
Portion is provided with the shaft shoulder, and antarafacial angular contact roller bearing outer ring (5) is arranged on the shaft shoulder left side, is fixed by left part end cap (1)；Antarafacial is oblique
Put roller bearing inner ring (8) and be socketed in feed screw nut (11) left distal end, bearing outer ring (5) is pressed on by the spring (10) on right side
In；The interposition of feed screw nut (11) is equipped with the left of the feed screw nut shaft shoulder, the feed screw nut shaft shoulder and the internal shaft shoulder of left part housing (2)
It is provided between right side on the right side of thrust bearing (12), the feed screw nut shaft shoulder and is provided with bevel gear disk (13)；On bevel gear disk (13)
Provided with two bevel gear dish axle shoulders, deep groove ball bearing (14) and angular contact ball bearing are set respectively on two bevel gear dish axle shoulders
(15), and by right part housing (3) and right part end cap (4) it is fixed；Left part end cap (1) and left part housing (2), right part housing
(3) it is connected between right part end cap (4) by end cap fastener (18), left part housing (2) is with right part housing (3) by housing
Fastener (17) is connected.
2. the electromechanical wing flap actuator according to claim 1 based on antarafacial angular contact roller bearing, it is characterised in that：It is described
Adjusting gasket (9) regulation spring pressure is set between bearing inner race (8) and spring (10).
3. the electromechanical wing flap actuator according to claim 1 based on antarafacial angular contact roller bearing, it is characterised in that：It is described
Antarafacial angular contact roller bearing retainer (7) is arranged between antarafacial angular contact roller bearing outer ring (5) and bearing inner race (8), is kept
At least three roller (6) is set on frame (7).
4. the electromechanical wing flap actuator according to claim 1 based on antarafacial angular contact roller bearing, it is characterised in that：It is described
Antarafacial angular contact roller bearing outer ring (5) is static relative to left part housing (2), and the antarafacial angular contact roller bearing inner ring (8) passes through
Key is connected with feed screw nut (11), and bearing inner race (8) is relative with feed screw nut (11) to be slided.
5. the electromechanical wing flap actuator according to claim 1 based on antarafacial angular contact roller bearing, it is characterised in that：It is described
There is gap between antarafacial angular contact roller bearing roller (6) and bearing inner race (8) and bearing outer ring (5).
6. the electromechanical wing flap actuator according to claim 1 based on antarafacial angular contact roller bearing, it is characterised in that：It is described
Ball-screw (16) is hollow structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710353654.6A CN107140184A (en) | 2017-05-18 | 2017-05-18 | A kind of electromechanical wing flap actuator based on antarafacial angular contact roller bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710353654.6A CN107140184A (en) | 2017-05-18 | 2017-05-18 | A kind of electromechanical wing flap actuator based on antarafacial angular contact roller bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107140184A true CN107140184A (en) | 2017-09-08 |
Family
ID=59777650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710353654.6A Pending CN107140184A (en) | 2017-05-18 | 2017-05-18 | A kind of electromechanical wing flap actuator based on antarafacial angular contact roller bearing |
Country Status (1)
| Country | Link |
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| CN (1) | CN107140184A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115303493A (en) * | 2022-09-16 | 2022-11-08 | 中航通飞华南飞机工业有限公司 | Release device for aircraft cockpit control system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3990753A (en) * | 1972-07-07 | 1976-11-09 | Skf Industries, Inc. | Roller bearings comprising rollers with positive skew angle |
| CN101490441A (en) * | 2006-07-17 | 2009-07-22 | 伊顿公司 | Flap actuator |
| CN102458985A (en) * | 2009-04-08 | 2012-05-16 | 伊顿公司 | Enhanced lubrication skewed roller clutch assembly and actuator including it |
| CN103939551A (en) * | 2014-03-18 | 2014-07-23 | 陕西汉江机床有限公司 | Ball screw pair with nut main driving |
| JP2014224597A (en) * | 2013-05-14 | 2014-12-04 | 澤 司郎 | Roller clutch |
| CN205524942U (en) * | 2016-01-29 | 2016-08-31 | 成都康拓兴业科技有限责任公司 | Integration electric steering engine based on high accuracy roller lead screw |
| CN106133397A (en) * | 2014-02-20 | 2016-11-16 | 赛峰电子与防务公司 | There is the actuator of locking device and the torque limiter being associated |
-
2017
- 2017-05-18 CN CN201710353654.6A patent/CN107140184A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3990753A (en) * | 1972-07-07 | 1976-11-09 | Skf Industries, Inc. | Roller bearings comprising rollers with positive skew angle |
| CN101490441A (en) * | 2006-07-17 | 2009-07-22 | 伊顿公司 | Flap actuator |
| CN102458985A (en) * | 2009-04-08 | 2012-05-16 | 伊顿公司 | Enhanced lubrication skewed roller clutch assembly and actuator including it |
| JP2014224597A (en) * | 2013-05-14 | 2014-12-04 | 澤 司郎 | Roller clutch |
| CN106133397A (en) * | 2014-02-20 | 2016-11-16 | 赛峰电子与防务公司 | There is the actuator of locking device and the torque limiter being associated |
| CN103939551A (en) * | 2014-03-18 | 2014-07-23 | 陕西汉江机床有限公司 | Ball screw pair with nut main driving |
| CN205524942U (en) * | 2016-01-29 | 2016-08-31 | 成都康拓兴业科技有限责任公司 | Integration electric steering engine based on high accuracy roller lead screw |
Non-Patent Citations (1)
| Title |
|---|
| 冯明等: "异面斜置滚子滑动离合器的研究与应用", 《机械传动》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115303493A (en) * | 2022-09-16 | 2022-11-08 | 中航通飞华南飞机工业有限公司 | Release device for aircraft cockpit control system |
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Application publication date: 20170908 |
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