阅读说明：本技术 一种翼身结合接头及无人机 (Wing body combines to connect and unmanned aerial vehicle ) 是由 崔瑞芹 尚晓冬 孙亚东 王红梅 王刚 于 2020-12-29 设计创作，主要内容包括：本发明公开了一种用于无人机机翼与机身连接的翼身结合接头及无人机,包括：翼身结合接头主体、翼身结合接头衬套、机身加强框耳片、机身加强框耳片衬套,其中：连接至机翼的翼身结合接头主体与连接至机身的机身加强框耳片通过螺栓、螺母及垫片经由螺栓孔连接。本发明解决了飞机受载严重时,翼身结合接头结构因受结构质量、空间尺寸等限制,不能满足设计安全要求的问题,该翼身结合接头结构连接牢固、安全可靠、互换性好。(The invention discloses a wing body combining joint for connecting wings and a body of an unmanned aerial vehicle and the unmanned aerial vehicle, wherein the wing body combining joint comprises: wing body joint main part, wing body joint bush, fuselage enhancement frame auricle bush, wherein: the wing body connected to the wing is connected with the joint main body and the fuselage reinforcing frame lug connected to the fuselage through bolt holes by bolts, nuts and gaskets. The invention solves the problem that the wing body joint structure can not meet the design safety requirement due to the limitation of the structure quality, the space size and the like when the airplane is seriously loaded, and the wing body joint structure has firm connection, safety, reliability and good interchangeability.)

1. A wing body joint, comprising:

a wing body bonded joint body (1, 2) connected to a wing, wherein the width of the wing body bonded joint body (1, 2) increases progressively from one end of the wing to one end of the fuselage, and its corresponding wing body bonded joint bushing (5, 6), the wing body bonded joint bushing (5, 6) being located in a wing body bonded bore (11, 12, 19, 20, 21, 22, 23, 24) on the wing body bonded joint body (1, 2);

a tab (7) connected to a fuselage reinforcing frame (13) and its corresponding tab bushing (8), wherein the tab bushing (8) is located in a tab hole (10) on the tab (7); and

the wing body combination holes (11, 12, 19, 20, 21, 22, 23, 24) are four groups and are respectively connected with the corresponding lug holes (10) through bolts (3), nuts (4) and gaskets (9).

2. The airfoil body coupling joint according to claim 1, wherein the airfoil body coupling joint body (1, 2) has a first arc (15) of 110-120 degrees, the distance between the first arc (15) and its corresponding first airfoil body coupling hole (11, 12) being 50-70 mm.

3. The wingbody joint according to claim 2, characterized in that the wingbody joint body (1, 2) further has a second circular arc (16) of 80-100 degrees, the second circular arc (16) being at a distance of 50-70 mm from its respective second wingbody joint hole (19, 20).

4. The airfoil body coupling joint according to claim 3, wherein the airfoil body coupling joint body (1, 2) further has a third arc (17) of 150-.

5. The airfoil body coupling joint according to claim 4, characterized in that the airfoil body coupling joint body (1, 2) further has a fourth arc (18) of 150-.

6. The wing-body joint according to claim 5, characterized in that the line between the first wing-body joint hole (11, 12) and the second wing-body joint hole (19, 20) is perpendicular to the horizontal flight direction of the fuselage; and a connecting line between the third wing body combining holes (21, 22) and the fourth wing body combining holes (23, 24) is vertical to the horizontal flying direction of the airplane body.

7. The wing body joint according to claim 6, characterized in that the distance between the first wing body joint hole (11, 12) and the second wing body joint hole (19, 20) is 1.4 to 1.6 times the distance between the third wing body joint hole (21, 22) and the fourth wing body joint hole (23, 24).

8. The wing body joint according to claim 7, wherein the wing body joint body (1, 2) comprises rims (14) which are integrally formed and perpendicular to each other, the rims (14) are each a one-sided cuff having a width which gradually widens from the end connected to the fuselage to the end connected to the wing and is constant from the third wing body joint hole (21, 22) and the fourth wing body joint hole (23, 24) to the end connected to the wing, and the gradually widening portion has an inclination angle of 20 degrees to 40 degrees.

9. The wing body bonded joint according to claim 1, characterized in that the wing body bonded joint body (1, 2) and the tab (7) are clearance fit.

10. A drone, characterized in that it comprises a fuselage-coupling joint according to any one of claims 1 to 9.

Technical Field

The invention belongs to the field of unmanned aerial vehicles, and particularly relates to a wing body combined joint for connecting wings and a body of an unmanned aerial vehicle and the unmanned aerial vehicle.

Background

In the design of modern medium and large unmanned aerial vehicles, in order to satisfy the packing transportation needs, the wing adopts the scheme of dismantling more. In the related art, the connection between the fuselage and the wing is usually realized by using upper tabs and lower tabs of the wing joint.

However, in the thin airfoil condition, the load bearing capacity of the upper and lower tabs is insufficient due to the limited structure and space.

In addition, if use thicker auricle, perhaps use schemes such as many auricles to carry out the reinforcement, then can cause unmanned aerial vehicle structure complicacy, weight gain, the dismouting difficulty influences unmanned aerial vehicle wholeness ability.

Disclosure of Invention

The invention aims to solve the technical problem that the wing body combination joint for connecting the wing and the fuselage of the unmanned aerial vehicle and the unmanned aerial vehicle aim to solve the problem that the wing body combination structure is limited by structural quality, space size and the like, and the safety design requirement cannot be met when the aircraft is seriously loaded.

According to one aspect of the present invention there is provided a wing body joint comprising: a wing body bonded joint body connected to a wing, wherein the width of the wing body bonded joint body increases progressively from one end of the wing to one end of the fuselage, and its corresponding wing body bonded joint bushing located in a wing body bonded bore on the wing body bonded joint body; a tab connected to a fuselage reinforcing frame and its corresponding tab bushing, wherein the tab bushing is located in a tab hole on the tab; and the wing body combining holes are four groups and are respectively connected with the corresponding lug holes through bolts, nuts and gaskets.

Preferably, the wing body combining joint main body is provided with a first arc of 110 and 120 degrees, and the distance between the first arc and the corresponding first wing body combining hole is 50-70 mm.

Preferably, the shank bond joint body further has a second arc of 80-100 degrees, the second arc being 50-70 mm from its corresponding second shank bond hole.

Preferably, the wing body combining joint main body is further provided with a third arc of 150-170 degrees, and the distance between the third arc and the corresponding third wing body combining hole is 50-70 mm.

Preferably, the wing body combining joint main body is further provided with a fourth arc of 150 and 170 degrees, and the distance between the fourth arc and the corresponding fourth wing body combining hole is 50-70 mm.

Preferably, a connecting line between the first wing body combining hole and the second wing body combining hole is perpendicular to the horizontal flying direction of the fuselage; and a connecting line between the third wing body combining hole and the fourth wing body combining hole is vertical to the horizontal flying direction of the airplane body.

Preferably, a distance between the first wing body coupling hole and the second wing body coupling hole is 1.4 to 1.6 times a distance between the third wing body coupling hole and the fourth wing body coupling hole.

Preferably, the wing body joint main body comprises integrally formed and mutually perpendicular frames, each frame is a single-side turned-over edge, the width of each frame gradually becomes wider from the end connected with the fuselage to the end connected with the wing and keeps unchanged from the third wing body joint hole and the fourth wing body joint hole to the end connected with the wing, and the inclination angle of the gradually widened part is 20 degrees to 40 degrees.

Preferably, the wing body is assembled with the joint body and the lug in a clearance mode.

According to another aspect of the invention, there is also provided a drone comprising a wing body joint according to any of the above.

By adopting the technical scheme, compared with the prior art, the invention has the following beneficial effects: because two rows of bolts are vertically connected, the connection between the wing and the fuselage structure is firmer, the thickness of the wing body combined joint is reduced, the hole diameter of the bolt hole is reduced, the action caused by the lifting force on the wing structure is distributed on the four bolts, the acting force borne by each bolt is reduced, the extrusion stress of the bolt hole is reduced, and the fatigue characteristic of the wing body combined joint is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:

FIG. 1 is a perspective view of a wing body joint according to an embodiment of the invention;

FIG. 2 is a blasting view of a wing body bonded joint according to an embodiment of the invention;

FIG. 3 is an elevation view of a wing body joint according to an embodiment of the invention; and

fig. 4 is a sectional view taken along the line a-a of fig. 3.

Labeled as:

1-2. wing body combined joint main body

3. Bolt

4. Nut

5. Wing body joint bushing 5

6. Wing body joint bush 6

7. Fuselage reinforcing frame lug

8. Lug bushing of machine body reinforcing frame

9. Gasket

10. Ear piece hole

11-12. first wing body combining hole

13. Fuselage reinforcing frame

14. Inclined frame

15. First arc

16. Second arc of circle

17. Third arc

18. Fourth arc

19-20 second wing body combining hole

21-22. third wing body combining hole

23-24. fourth wing body combining hole

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following embodiments and the accompanying drawings.

The embodiment of the invention discloses a wing body combining joint, which is shown in figures 1 to 2 and comprises: wing body joint main part 1,2, wing body joint bush 5,6, fuselage enhancement frame auricle 7, fuselage enhancement frame auricle bush 8, wherein: the wing body joint body 1,2 is connected to a wing, and the wing body joint bushing 5,6 is located in the first wing body joint hole 11,12 of the wing body joint body 1, 2; the machine body reinforcing frame lug 7 is connected to the machine body, and the machine body reinforcing frame lug bush 8 is positioned in a first lug hole 10 of the machine body reinforcing frame lug 7; the wing body joint main bodies 1 and 2 are connected with a fuselage reinforcing frame lug 7 through bolts 3, nuts 4 and gaskets 9 through first wing body joint holes 11 and 12 and first lug holes 10; the wing body joint main body 1,2 is close to fuselage reinforcing frame 13 one side and is the auricle type structure, and its width reduces from fuselage one end to wing one end step by step to and first wing body joint hole 11,12 set up two rows along the wing body joint main body 1,2 vertical direction, every row arranges two.

In the related art, the connection between the fuselage and the wing is usually realized by an upper lug and a lower lug. Under the condition of thin airfoil, the bearing capacity of the upper lug and the lower lug is insufficient due to the limitation of structure and space.

In the embodiment of the invention, as shown in fig. 2, first wing body combining holes 11 and 12 are respectively arranged on the wing body combining joint main bodies 1 and 2 along the vertical direction, and first lug holes 10 are correspondingly arranged on the wing body reinforcing frame lugs 7, and the wing body combining joint main bodies 1 and 2 are vertically connected with the wing body reinforcing frame lugs 7 through bolts 3, nuts 4 and gaskets 9, so that the dispersion and the transmission of course load are effectively realized. Accordingly, the thickness of the wing body joint main body is reduced to reduce the weight of the wing body joint, the hole diameter of the bolt hole is reduced, the action caused by the lifting force on the wing structure is distributed on the four bolts, the acting force borne by each bolt is reduced, the extrusion stress of the bolt hole is reduced, and the fatigue property of the wing body joint is improved.

According to the embodiment of the invention, as shown in fig. 2, the side of the wing body joint main body 1,2 close to the fuselage reinforcing frame 13 is of a lug-type structure, which is matched with the appearance of the wing, and the width of the lug-type structure is gradually reduced from one end of the fuselage to one end of the wing, so as to reduce the weight of the wing body joint.

According to the embodiment of the invention, as shown in fig. 1 to 3, the wing body combining joint main body 1,2 has a first arc 15 of 110 and 120 degrees, and the distance between the first arc 15 and the corresponding first wing body combining hole 11,12 is 50-70 mm. The wing body joint main bodies 1 and 2 are also provided with a second circular arc 16 of 80-100 degrees, and the distance between the second circular arc 16 and the corresponding second wing body joint holes 19 and 20 is 50-70 mm. The wing body combining joint main bodies 1 and 2 are also provided with a third arc 17 with the angle of 150-. The wing body combining joint main bodies 1 and 2 are also provided with a fourth arc 18 with the angle of 150-170 degrees, and the distance between the fourth arc 18 and the corresponding fourth wing body combining holes 23 and 24 is 50-70 mm.

In the embodiment of the invention, the course load can be effectively born, transferred and diffused by setting the radian of each arc and the distance between each arc and the adjacent wing body combination hole, so that the effects of high utilization rate of the wing body combination joint structure and good force transfer route are achieved.

According to the embodiment of the present invention, as shown in fig. 1 to 3, the connection line between the first wing body combining hole 11,12 and the second wing body combining hole 19, 20 is perpendicular to the horizontal flight direction of the fuselage; the connecting line between the third wing body combining holes 21, 22 and the fourth wing body combining holes 23, 24 is perpendicular to the horizontal flying direction of the fuselage. The distance between the first wing body coupling holes 11,12 and the second wing body coupling holes 19, 20 is 1.4 times to 1.6 times the distance between the third wing body coupling holes 21, 22 and the fourth wing body coupling holes 23, 24.

In the embodiment of the invention, under the condition of keeping the size of the wing body joint structure unchanged, the fatigue property of the wing body joint is improved while the strength and the rigidity of the wing body joint are ensured by adding two bolt holes along the vertical direction of the wing body joint main body and reasonably setting the positions, the intervals and the apertures of the bolt holes.

According to the embodiment of the present invention, as shown in fig. 1 to 4, the wing body joint main bodies 1 and 2 include the integrally formed frames 14 perpendicular to each other, each of the frames 14 is a one-sided flange, the width of the flange gradually widens from the end connected to the fuselage to the end connected to the wing, and the width of the flange is kept constant from the third wing body joint holes 21 and 22, the fourth wing body joint holes 23 and 24 to the end connected to the wing, and the inclination angle of the gradually widening portion is 20 to 40 degrees. In this embodiment, the inclined frames 14 are disposed on the upper and lower sides of the main body of the wing body joint, so as to reduce the weight of the wing body joint and transmit the heading load.

According to the embodiment of the invention, as shown in fig. 1, the left end face of the wing body combined joint main body is flat, and the wing body combined joint main bodies 1 and 2 and the lug 7 are assembled in a clearance mode, so that the wing body combined joint main body can be assembled smoothly after the joint structure is subjected to slight deformation.

According to the embodiment of the invention, the wing body joint bushings 5 and 6 and the fuselage reinforcing frame lug bushing 8 are respectively designed to be of a shouldered structure and used for improving the bearing capacity of bolt holes, the wing body joint bushings 3 and 4 and the first wing body joint holes 11 and 12 and the fuselage reinforcing frame lug bushing 8 and the first lug hole 10 are fixed in an interference fit mode, and the sizes of the wing body joint bushings 3 and 4 and the fuselage reinforcing frame lug bushing 8 are respectively matched with the sizes of the bolt holes of the wing body joint main bodies 1 and 2 and the fuselage reinforcing frame lug 7. In this embodiment, the wing body joint main part 1,2 have four bolt holes respectively, can cooperate four wing body joint bush 5 respectively, 6 and this wing body joint main part 1, 2's bolt hole interference fit fix. The machine body reinforcing frame lug plates 7 are provided with four bolt holes, and can be matched with four machine body reinforcing frame lug plate bushings 8 to be fixed with the bolt holes of the machine body reinforcing frame lug plates 7 in an interference fit mode.

According to the embodiment of the invention, as shown in fig. 2, the wing body combining joint main body 1 and the wing body combining joint main body 2 are used in a matching way, and the height of the back plate of the wing body combining joint main body 1 is smaller than that of the back plate of the wing body combining joint main body 2, so as to match the appearance of the wing.

In addition, this embodiment still provides an unmanned aerial vehicle, combines to connect including the wing body that is used for wing and fuselage to be connected.

The working principle of the invention is as follows: during flying, the lifting force and the moment on the wing structure are transmitted to the wing body joint through the bolts connected with the wing girder, and the wing body joint is transmitted to the fuselage reinforcing frame through the four bolts connected with the lug of the fuselage reinforcing frame, so that the integrity of the whole aircraft force transmission path is realized, and the transmission and the diffusion of the load are effectively realized. Meanwhile, as the connecting bolts of the wing body connecting joint and the lug of the fuselage reinforcing frame are increased, the vertical load acting on each bolt caused by the lift force on the wing structure is reduced, and as the distance in the vertical direction of the connecting bolts is increased, the load in the span direction caused by the moment on the wing structure is reduced, so that the wing body connecting joint capable of meeting the design requirements is obtained.

By adopting the technical scheme, compared with the prior art, the invention has the following beneficial effects: because the two rows of bolts are vertically connected, the connection between the wing and the fuselage structure is firmer, the thickness of the main body of the wing body joint is thinner, the aperture of the bolt holes is reduced, the action caused by the lift force on the wing structure is distributed on the four bolts, the action force born by each bolt is reduced, the extrusion stress of the bolt holes is reduced, and the fatigue characteristic of the wing body joint is improved.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.