CN217374885U - Wing and aircraft - Google Patents

Abstract

The utility model relates to an aircraft technical field especially relates to a wing and aircraft. The utility model provides a wing includes the wing body, wing flap and drive arrangement, this internal accommodation space that has of wing, wing flap and wing body pin joint, drive arrangement sets up in the accommodation space, the outside that partial drive arrangement can stretch out the wing body just can drive the relative wing body of wing flap and rotate, because drive arrangement sets up in the accommodation space, so need not additionally to set up the great radome fairing of volume among the prior art, it is big to avoid the aerodynamic drag of wing, reduce the damage of redundant power, can improve the manipulation efficiency to the wing flap. The utility model provides an aircraft can realize the better effect of controlling the aircraft through using above-mentioned wing.

Description

Wing and aircraft

Technical Field

The utility model relates to an aircraft technical field especially relates to a wing and aircraft.

Background

The aircraft comprises a fuselage, wings and empennages, wherein the wings are arranged on two sides of the fuselage, and the empennages are arranged at the tail part of the fuselage. The wing comprises a wing body, a flap and a flap driving device, wherein the flap is arranged on the wing body, and the flap driving device drives the flap to rotate relative to the wing body, so that the acceleration effect of the aircraft during takeoff or landing is realized, the wing is used for delaying the occurrence of stall of the wing during high-angle-of-attack flight, the purposes of increasing lift force and controlling resistance are achieved, and the takeoff and landing characteristics are improved.

The flap drive is usually arranged outside and below the wing body, and the entire flap drive is enclosed inside by an additional, bulky fairing. The fairing is large in size and large in aerodynamic drag, redundant power damage is caused, and operation efficiency of the flap is low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a wing can improve the efficiency of controlling the wing flap.

Another object of the utility model is to provide an aircraft can realize the better effect of controlling the aircraft.

To achieve the purpose, the utility model adopts the following technical proposal:

an airfoil, comprising:

the wing body is provided with an accommodating space;

the flap is pivoted with the wing body; and

and the driving device is arranged in the accommodating space, and part of the driving device can extend out of the wing body and can drive the flap to rotate relative to the wing body.

Preferably, the driving device includes:

the linear driving mechanism comprises a linear driving mechanism body and an output rod, the output rod can do telescopic motion relative to the linear driving mechanism body, and the linear driving mechanism body is pivoted with the wing body;

the base is arranged in the accommodating space and provided with an arc-shaped groove, and the pulley shaft assembly penetrates through the arc-shaped groove and can slide along the arc-shaped groove;

and one end of the output rod and one end of the push rod assembly are respectively pivoted with the pulley shaft assembly, and the other end of the push rod assembly is pivoted with the flap.

Preferably, the pivot center of the flap and the wing body is O1, the pivot center of the flap and the drive device is O2, and the distance between a straight line connecting the O1 and the O2 is equal to the radius of the center line of the arc-shaped groove.

Preferably, the pulley shaft assembly includes:

the pulley shaft is respectively pivoted with the push rod assembly and the output rod;

and the pulley is pivoted with the pulley shaft, is accommodated in the arc-shaped groove and can slide along the arc-shaped groove.

Preferably, one of the outer periphery of the pulley and the inner wall surface of the arc-shaped groove is provided with an annular protrusion, the other is provided with an annular groove, and the annular protrusion is inserted into the annular groove.

Preferably, the pulley shaft assembly further includes:

the first shaft sleeve and the second shaft sleeve are sleeved on the pulley shaft, and the push rod assembly, the first shaft sleeve, the pulley, the second shaft sleeve and the output rod are arranged along the axis direction of the pulley shaft.

Preferably, the wing body is provided with a notch, and the push rod assembly can extend out of the wing body through the notch.

Preferably, the flap comprises a flap body and a rocker arm arranged on the flap body, the wing body comprises a shell and a fixed support arm arranged outside the shell, and the rocker arm is pivoted with the fixed support arm.

Preferably, the rocker arms are arranged in multiple groups, and the multiple groups of rocker arms are arranged at equal intervals along the width direction of the flap body.

The aircraft comprises a fuselage and wings, wherein the wings are arranged on two sides of the fuselage.

The utility model has the advantages that:

the utility model provides a wing passes through this internal accommodation space that has of wing, and drive arrangement sets up in the accommodation space, and partial drive arrangement can stretch out the outside of wing body and can drive the relative wing body rotation of wing flap. Because the driving device is arranged in the accommodating space, a fairing with larger volume in the prior art does not need to be additionally arranged, the aerodynamic drag of the wing can be avoided to be large, the redundant power damage is reduced, and the control efficiency of the flap can be improved.

The utility model provides an aircraft can realize the better effect of controlling of aircraft through using above-mentioned wing.

Drawings

Fig. 1 is a schematic structural diagram of a wing provided in an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a wing provided by an embodiment of the present invention in a maximum flap opening angle state;

fig. 3 is a schematic structural view of a flap according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a wing body provided in an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a push rod assembly according to an embodiment of the present invention;

fig. 6 is a schematic structural view of a pulley shaft assembly provided by an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a pulley provided by an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a base according to an embodiment of the present invention;

fig. 9 is an exploded view of a base provided by an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a linear driving mechanism provided in an embodiment of the present invention;

fig. 11 is a schematic structural diagram of a bracket according to an embodiment of the present invention.

In the figure:

100-an airfoil;

1-a wing body; 11-a housing; 111-an accommodating space; 112-notch; 12-fixed support arm;

2-a flap; 21-a flap body; 22-a rocker arm; 23-single ear;

3-a drive device; 31-a linear drive mechanism; 311-linear drive mechanism body; 312-output rod; 313-a second monaural joint; 314-a third monaural joint; 32-a base; 321-a first mounting plate; 3211-a first mounting hole; 322-an upper member; 3221-a through hole; 323-a lower member; 3231-blind hole; 324-an arc-shaped slot; 325-annular projection; 33-pulley shaft assembly; 331-a pulley shaft; 3311-first thread; 3312-second thread; 332-a pulley; 3321-outer lane; 3321-annular groove; 3322-rolling elements; 3323-inner ring; 333-first shaft sleeve; 334-second shaft sleeve; 34-a pushrod assembly; 341-push rod; 342-a first monaural joint; 343-a binaural joint;

4-a scaffold; 41-a second mounting plate; 411-a second mounting hole; 42-ear plate.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements related to the present invention are shown in the drawings.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation of the first and second features not being in direct contact, but being in contact with another feature between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

As shown in fig. 1, the present embodiment provides an aircraft, which includes a fuselage, wings 100 and a tail wing, wherein the wings 100 are disposed on both sides of the fuselage, and the tail wing is disposed at the tail of the fuselage. The wing 100 comprises a wing body 1, a flap 2 and a driving device 3, wherein the flap 2 is arranged outside the wing body 1 and is pivoted with the wing body 1, and the driving device 3 drives the flap 2 to rotate relative to the wing body 1, so that the speed increasing effect of the aircraft during takeoff or landing is realized, the speed increasing effect is used for delaying the occurrence of stall of the wing 100 during high-angle-of-attack flight, the purposes of increasing lift force and controlling drag force are achieved, and the takeoff and landing characteristics are improved.

In the prior art, the drive means 3 are usually arranged outside and below the wing body 1, and the aircraft further comprises a fairing of large volume, which encloses the entire drive means 3 inside. The fairing is bulky and has high aerodynamic drag, causing redundant power damage, resulting in inefficient manipulation of the flap 2.

In order to solve the above problem, as shown in fig. 1 and fig. 2, the wing body 1 has an accommodating space 111 therein, the driving device 3 is disposed in the accommodating space 111, and a part of the driving device 3 can extend out of the wing body 1 and can drive the flap 2 to rotate relative to the wing body 1. Since the driving device 3 is disposed in the accommodating space 111, it is not necessary to additionally dispose a fairing with a large volume in the prior art, which can avoid large aerodynamic drag of the wing 100, reduce redundant power damage, and improve the operating efficiency of the flap 2.

The driving device 3 in the embodiment can be only a linear steering engine with small volume, and the structure is simple and convenient to assemble. The straight line steering wheel includes sharp steering wheel body and sharp steering wheel output lever, and sharp steering wheel output lever can be telescopic motion relatively sharp steering wheel body, and sharp steering wheel body and 1 pin joint of wing body, the free end and the 2 pin joints of flap of sharp steering wheel output lever, when sharp steering wheel output lever can be telescopic motion relatively sharp steering wheel body, sharp steering wheel output lever can drive 2 relative wing bodies of flap and rotate 1.

When the wing flap 2 needs to rotate a large angle relative to the wing body 1, the output rod of the linear steering engine needs to extend out by a long length, so that the overall energy consumption of the linear steering engine is large. In addition, dead point position appears easily in the rotation of independent straight line steering wheel drive flap 2, leads to flap 2 relatively wing body 1 angle of adjustment less, and independent straight line steering wheel can't realize the wide-angle adjustment.

In order to solve the above problem, as shown in fig. 1 and fig. 2, the driving device 3 includes a linear driving mechanism 31, a base 32, a push rod assembly 34 and a pulley shaft assembly 33, the linear driving mechanism 31 includes a linear driving mechanism body 311 and an output rod 312, the output rod 312 can make telescopic motion relative to the linear driving mechanism body 311, the linear driving mechanism body 311 is pivoted with the wing body 1, the base 32 is disposed in the accommodating space 111 and is provided with an arc-shaped groove 324, the pulley shaft assembly 33 is inserted into the arc-shaped groove 324 and can slide along the arc-shaped groove 324, one end of the output rod 312 and one end of the push rod assembly 34 are respectively pivoted with the pulley shaft assembly 33, and the other end of the push rod assembly 34 is pivoted with the flap 2. When the output rod 312 extends out of the linear driving mechanism body 311, the output rod 312 drives the pulley assembly 33 to slide from the position of fig. 1 to the position of fig. 2, and the flap 2 is pushed by the push rod assembly 34 to rotate counterclockwise from the position of fig. 1 to the position of fig. 2, so that the adjustment of the rotation of the flap 2 relative to the wing body 1 by a certain angle is realized. This kind of drive arrangement 3's simple structure and exquisite, light in weight, transmission route are short, are fit for middle-size and small-size freight transportation unmanned aerial vehicle. In addition, compared with the structure of the single linear steering engine, the output rod 312 of the driving device 3 only needs to extend out for a short distance to realize the adjustment of the flap 2 relative to the wing body 1 at a large angle, and the energy consumption of the linear driving mechanism 31 is effectively reduced. The driving device 3 and the flap 2 jointly form a multi-link structure, so that dead points can be reduced, and the angle of the flap 2 relative to the wing body 1 can be adjusted within a large range.

Preferably, as shown in fig. 1, the pivot center of the flap 2 and the wing body 1 is O1, the pivot center of the flap 2 and the driving device 3 is O2, and the distance between the straight connecting lines of O1 and O2 is equal to the radius of the center line of the arc-shaped groove 324, so that under the driving of the linear driving mechanism 31, the flap 2 and the pulley shaft assembly 33 can synchronously rotate at equal angles, and the accurate control of the linear driving mechanism 31 on the rotation angle of the flap 2 is realized.

As shown in fig. 1 to 4, the flap 2 includes a flap body 21 and a rocker arm 22 disposed thereon, the wing body 1 includes a housing 11 and a fixed arm 12 disposed outside the housing, the rocker arm 22 is pivoted to the fixed arm 12, and the flap 2 and the wing body 1 can be assembled quickly by disposing the rocker arm 22 and the fixed arm 12. Specifically, the fixed support arm 12 includes two ear plates that just set up and the interval, and the rocking arm 22 is pegged graft between two ear plates, and the flap 2 is connected through bolt assembly with the wing body 1, and bolt assembly includes bolt and nut, and after the bolt passed first ear plate, rocking arm 22 and another ear plate in proper order, the nut twisted on the screw of the shank of bolt from another ear plate outside to can realize the pin joint of flap 2 and wing body 1. As a preferable scheme, the nut can adopt a groove-shaped nut, and the pin penetrates through a groove of the groove-shaped nut to be inserted into the screw rod, so that the groove-shaped nut and the screw rod can be prevented from rotating relatively.

Preferably, as shown in fig. 1 to 4, the rocker arms 22 are arranged in three groups, and the three groups of rocker arms 22 are arranged at equal intervals along the width direction of the flap body 21, so that the flap body 21 can be stably supported by the rocker arms 22. In other embodiments, the number of the rocker arms 22 may also be provided in four, five or more groups, and the greater the number of the rocker arms 22, the better the support effect of the flap body 21 is. Of course, selecting a proper number of rocker arms 22 can not only realize better support for the flap body 21, but also effectively reduce the weight of the wing 100.

As a preferable scheme, as shown in fig. 4, a notch 112 is formed in the wing body 1, as shown in fig. 1, the push rod assembly 34 can extend out of the wing body 1 through the notch 112, and by providing the notch 112, when the push rod assembly 34 pushes the flap 2 to move at a specific declination angle, interference between the push rod assembly 34 and the wing body 1 can be avoided, and smooth operation of the drive device 3 on the flap 2 in the whole process can be realized.

As shown in fig. 3, the flap 2 further includes a single lug 23 disposed at the tail of the flap body 21, as shown in fig. 5, the push rod assembly 34 includes a push rod 341 and a double lug joint 343, the double lug joint 343 is disposed at one end of the push rod 341, the double lug joint 343 includes two lug plates arranged at intervals, the single lug 23 is inserted between the two lug plates, the single lug 23 is connected to the double lug joint 343 through a bolt assembly, the bolt assembly includes a bolt and a nut, after the bolt sequentially passes through the first lug plate, the single lug 23 and the other lug plate, the nut is screwed on the thread of the bolt rod of the bolt from the outer side of the other lug plate, so that the pivot joint of the flap 2 and the push rod assembly 34 can be realized. As a preferable scheme, the nut can adopt a groove-shaped nut, and the pin penetrates through a groove of the groove-shaped nut to be inserted into the screw rod, so that the groove-shaped nut and the screw rod can be prevented from rotating relatively. The double-lug joint 343, the single lug 23 and the bolt assembly are matched, so that a better pivoting effect of the flap 2 and the push rod assembly 34 can be realized.

As shown in fig. 1 and 2, the pulley shaft assembly 33 includes a pulley shaft 331 and a pulley 332, the pulley shaft 331 is respectively pivoted with the push rod assembly 34 and the output rod 312, the pulley 332 is pivoted with the pulley shaft 331, the pulley 332 is accommodated in the arc-shaped groove 324 and can slide along the arc-shaped groove 324, the pulley 332 and the arc-shaped groove 324 are in rolling contact, so that the friction force between the pulley 332 and the arc-shaped groove 324 can be effectively reduced, the sensitivity of the pulley 332 in the arc-shaped groove 324 is improved, and the smoothness of the angle adjustment of the flap 2 is realized.

As shown in fig. 5, the push rod assembly 34 further includes a first single lug connector 342, the first single lug connector 342 is disposed at an end of the push rod 341 away from the double lug connector 343, as shown in fig. 5 and 6, the pulley shaft 331 passes through the first single lug connector 342, a first thread 3311 is disposed at an end of the pulley shaft 331 passing through the first single lug connector 342, and a nut is screwed on the first thread 3311, and the nut can prevent the first single lug connector 342 from falling off the pulley shaft 331. Preferably, the nut may be a slotted nut, and a pin is inserted into the pulley shaft 331 through a slot of the slotted nut, so that the slotted nut and the pulley shaft 331 are prevented from rotating relatively.

Preferably, as shown in fig. 1 and 5, the length of the push rod assembly 34 is adjustable, and by adjusting the length of the push rod assembly 34, the maximum adjustment angle of the flap 2 can be adjusted, so that the wing 100 can be used in different scenes. Specifically, the first monaural joint 342 and the binaural joint 343 are respectively in threaded connection with the push rod 341, and by adjusting the screwing depth of the first monaural joint 342 and the binaural joint 343 relative to the push rod 341, the length of the push rod assembly 34 can be adjusted, which is convenient for the operator to operate.

Preferably, as shown in fig. 6, the pulley shaft assembly 33 further includes a first shaft sleeve 333 and a second shaft sleeve 334, the first shaft sleeve 333 and the second shaft sleeve 334 are both sleeved on the pulley shaft 331, the push rod assembly 34, the first shaft sleeve 333, the pulley 332, the second shaft sleeve 334 and the output rod 312 are arranged along the axial direction of the pulley shaft 331, and the arrangement of the first shaft sleeve 333 and the second shaft sleeve 334 can avoid collision between the push rod assembly 34 and the pulley 332 and collision between the pulley 332 and the output rod 312.

Preferably, as shown in fig. 7, the pulley 332 includes an outer ring 3321, a rolling element 3322 and an inner ring 3323, the inner ring 3323 is sleeved on the outer periphery of the pulley shaft 331, the rolling element 3322 is sleeved on the outer periphery of the inner ring 3323, the outer ring 3321 is sleeved on the outer periphery of the rolling element 3322, the pulley 332 can rotate relative to the pulley shaft 331, and the problem that the pulley shaft 331 is broken due to excessive friction force applied to the pulley 332 is avoided.

Preferably, as shown in fig. 7, the outer ring 3321 has an annular groove 3321 on the outer circumference thereof, the arc-shaped groove 324 has an annular protrusion 325 on the inner wall surface thereof, the annular protrusion 325 is inserted into the annular groove 3321, when the pulley 332 slides along the arc-shaped groove 324, the annular protrusion 325 and the annular groove 3321 cooperate to guide the movement of the pulley 332, and further, the annular protrusion 325 and the annular groove 3321 cooperate to prevent the pulley 332 from falling out of the arc-shaped groove 324. In other embodiments, the annular groove 3321 may be disposed on the inner wall surface of the arc-shaped groove 324, and the annular protrusion 325 may be disposed on the outer circumference of the outer ring 3321.

Referring to fig. 8 and 9, the structure of the base 32 is described, as shown in fig. 8 and 9, the base 32 includes a first mounting plate 321 and a fixing member, a first mounting hole 3211 is formed in the first mounting plate 321, and the fixing member can pass through the first mounting hole 3211 to fix the first mounting plate 321 on the housing 11, so as to fix the base 32 and the housing 11. Specifically, the fixing member may be a screw or a pin, and the base 32 and the housing 11 can be quickly detached and replaced by the screw or the pin.

Preferably, as shown in fig. 8 and 9, the base 32 includes an upper member 322 and a lower member 323, the lower member 323 is fixedly connected to the first mounting plate 321, the upper member 322 is located above the lower member 323 and detachably connected to the lower member 323, and the upper member 322 and the lower member 323 together form an arc-shaped groove 324, so that the pulley 332 and the base 32 can be quickly mounted and dismounted, and an operator can conveniently mount and dismount the pulley 332 onto and from the base 32. Specifically, as shown in fig. 8 and 9, the base 32 further includes a fixing element such as a screw or a pin, the upper member 322 is provided with a through hole 3221, the lower member 323 is provided with a blind hole 3231, when the upper member 322 is placed on the lower member 323, the through hole 3221 is aligned with the blind hole 3231, and the fixing element sequentially passes through the through hole 3221 and the blind hole 3231, so that the upper member 322 and the lower member 323 can be quickly disassembled.

Now, the structure of the linear driving mechanism 31 and the support frame 4 will be described with reference to fig. 1, fig. 10 and fig. 11, as shown in fig. 10, the linear driving mechanism 31 further includes a second monaural joint 313 and a third monaural joint 314, the third monaural joint 314 is disposed at the tail of the linear driving mechanism body 311, the second monaural joint 313 is disposed at the free end of the output rod 312, the second monaural joint 313 is pivotally connected to the pulley shaft 331, as shown in fig. 1, the support frame 4 is disposed inside the casing 11 and is fixedly connected to the casing 11, and the third monaural joint 314 is pivotally connected to the support frame 4, and through the arrangement of the second monaural joint 313 and the third monaural joint 314, a better pivoting effect of the linear driving mechanism 31 with the support frame 4 and the push rod assembly 34 can be achieved.

Specifically, as shown in fig. 11, the bracket 4 includes a second mounting plate 41 and two ear plates 42 disposed thereon at an interval, the bracket 4 further includes a bolt and a nut, the third single-ear joint 314 is disposed in a space formed by the two ear plates 42, the bolt sequentially passes through one ear plate 42, the third single-ear joint 314 and the other ear plate 42, and the nut is screwed on a free end of a screw of the bolt, so that a better pivoting effect of the linear driving mechanism 31 and the bracket 4 can be achieved.

Preferably, as shown in fig. 11, the bracket 4 further includes a fastener, the fastener may be a screw or a bolt, the second mounting plate 41 further includes a second mounting hole 411, the fastener passes through the second mounting hole 411 to mount the bracket 4 on the housing 11, and the quick mounting and dismounting of the bracket 4 and the housing 11 can be realized through the setting of the fastener.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. An airfoil, comprising:

the wing body (1) is internally provided with an accommodating space (111);

the flap (2) is pivoted with the wing body (1); and

the driving device (3) is arranged in the accommodating space (111), and part of the driving device (3) can extend out of the wing body (1) and can drive the flap (2) to rotate relative to the wing body (1).

2. The wing as claimed in claim 1, characterized in that the drive device (3) comprises:

the linear driving mechanism (31) comprises a linear driving mechanism body (311) and an output rod (312), the output rod (312) can perform telescopic motion relative to the linear driving mechanism body (311), and the linear driving mechanism body (311) is pivoted with the wing body (1);

the base (32) is arranged in the accommodating space (111) and provided with an arc-shaped groove (324), and the pulley shaft assembly (33) penetrates through the arc-shaped groove (324) and can slide along the arc-shaped groove (324);

the output rod (312) and one end of the push rod assembly (34) are respectively pivoted with the pulley shaft assembly (33), and the other end of the push rod assembly (34) is pivoted with the flap (2).

3. The wing as claimed in claim 2, characterized in that the pivoting center of the flap (2) and the wing body (1) is O1, the pivoting center of the flap (2) and the drive (3) is O2, and the linear connecting line distance of the O1 and the O2 is equal to the radius of the center line of the arc-shaped groove (324).

4. The airfoil of claim 2, wherein the pulley shaft assembly (33) comprises:

a pulley shaft (331) respectively pivoted with the push rod assembly (34) and the output rod (312);

the pulley (332) is pivoted with the pulley shaft (331), and the pulley (332) is accommodated in the arc-shaped groove (324) and can slide along the arc-shaped groove (324).

5. The wing as claimed in claim 4, characterized in that one of the outer circumference of the pulley (332) and the inner wall surface of the arc-shaped slot (324) is provided with an annular projection (325), and the other is provided with an annular groove (3321), the annular projection (325) being plugged into the annular groove (3321).

6. The airfoil of claim 4, wherein the pulley shaft assembly (33) further comprises:

the push rod assembly comprises a first shaft sleeve (333) and a second shaft sleeve (334) which are sleeved on a pulley shaft (331), and the push rod assembly (34), the first shaft sleeve (333), the pulley (332), the second shaft sleeve (334) and the output rod (312) are arranged along the axis direction of the pulley shaft (331).

7. The wing as claimed in any one of claims 2 to 6, wherein a notch (112) is formed in the wing body (1), and the push rod assembly (34) can extend out of the wing body (1) through the notch (112).

8. The wing as claimed in one of claims 1 to 6, characterized in that the flap (2) comprises a flap body (21) and a rocker (22) arranged thereon, the wing body (1) comprising a housing (11) and a fixed arm (12) arranged outside thereof, the rocker (22) being pivoted to the fixed arm (12).

9. The wing as claimed in claim 8, characterized in that the rocker arms (22) are arranged in groups, the groups of rocker arms (22) being arranged at equidistant intervals in the width direction of the flap body (21).

10. An aircraft comprising a fuselage, characterized in that the aircraft further comprises a wing as claimed in any one of claims 1 to 9, the wing being provided on both sides of the fuselage.

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