CN109606631B - Wing folding mechanism capable of being folded in large angle through linear driving and double rotation - Google Patents
Wing folding mechanism capable of being folded in large angle through linear driving and double rotation Download PDFInfo
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- CN109606631B CN109606631B CN201811398795.0A CN201811398795A CN109606631B CN 109606631 B CN109606631 B CN 109606631B CN 201811398795 A CN201811398795 A CN 201811398795A CN 109606631 B CN109606631 B CN 109606631B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C3/00—Wings
- B64C3/38—Adjustment of complete wings or parts thereof
- B64C3/56—Folding or collapsing to reduce overall dimensions of aircraft
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Abstract
The invention discloses a wing folding mechanism capable of being folded in a large angle through linear driving and double rotation, which comprises a connecting shaft, an inner wing connecting joint and an outer wing connecting joint which are arranged on the connecting shaft, and a telescopic folding mechanism connected with the connecting shaft; the telescopic folding mechanism comprises two telescopic folding devices which have the same structure and are hinged with the connecting shaft; one end of the telescopic folding device, which is far away from the connecting shaft, is hinged with the outer wing, and the other end of the telescopic folding device, which is far away from the connecting shaft, is hinged with the inner wing. The inner wing and outer wing connecting joints are respectively hinged with inner wing lugs on the inner wing and outer wing lugs on the outer wing; a cavity for installing the connecting shaft and the telescopic folding mechanism is formed between the inner wing lug and the outer wing lug. The invention has the beneficial effects that: the mechanism of the invention can ensure the aerodynamic shape of the wing, does not influence the flight performance of the airplane, and has large folding angle, low height after folding and small occupied space; the method has the advantages of operability, simple principle, wide applicability, short design period and low difficulty.
Description
Technical Field
The invention relates to the technical field of airplane structure folding mechanisms, in particular to a wing folding mechanism capable of being folded in a large angle through linear driving double rotation.
Background
At present, the field of folding wing variant airplanes almost blank in mature cases at home, only a certain carrier-based airplane uses a wing folding technology, but the technical scheme designs a hinge on an upper wing surface, highlights the appearance of the wing, influences the aerodynamic performance of the airplane, and has a limited folding angle of about 120 degrees.
The more mature methods abroad comprise two schemes of electric rotation and hydraulic linear driving. The first electric rotating scheme has low power and insufficient driving force for larger and heavier wings, and the folding mechanism of the airplane protrudes out of the appearance structure no matter the airplane is an S-3 airplane or an A-6 airplane, so that the aerodynamic performance of the airplane is reduced; the second hydraulic linear driving scheme has high power, simple structure and high driving force, but the mechanism design also has the problem of protruding structural appearance, such as EA-6B, and most folding schemes are difficult to break through the limit of 120 degrees due to the problem of structural self interference.
Disclosure of Invention
The invention aims to provide a wing folding mechanism which is simple and reliable, has large holding force and can be folded in a large angle, is driven by a straight line to rotate doubly and can be folded in a large angle under the conditions of not damaging the aerodynamic appearance of an airplane and meeting the requirements of the structural strength and rigidity of the airplane.
The invention is realized by the following technical scheme: a wing folding mechanism capable of being folded in a large angle through linear driving double rotation comprises a connecting shaft, an inner wing connecting joint and an outer wing connecting joint which are arranged on the connecting shaft, and a telescopic folding mechanism connected with the connecting shaft; the telescopic folding mechanism comprises two telescopic folding devices which have the same structure and are hinged with the connecting shaft; one end of the telescopic folding device, which is far away from the connecting shaft, is hinged with the outer wing, and the other end of the telescopic folding device, which is far away from the connecting shaft, is hinged with the inner wing. The inner wing and outer wing connecting joints are respectively hinged with inner wing lugs on the inner wing and outer wing lugs on the outer wing; a cavity for installing the connecting shaft and the telescopic folding mechanism is formed between the inner wing lug and the outer wing lug.
The working principle is as follows:
the telescopic folding mechanism is used as a driving mechanism of the device, the two telescopic folding devices are both connected with the connecting shaft, the other end of one telescopic folding device is hinged with the inner wing, and the other end of the other telescopic folding device is hinged with the outer wing; the extension of the telescopic folding mechanism connected with the inner wing enables the position of a hinge joint of the outer wing lug and the inner and outer wing connecting joint to be raised, and the telescopic folding device hinged with the outer wing is driven to extend so as to drive the outer wing to rotate around the hinge joint of the outer wing lug and the inner and outer wing connecting joint, so that the purpose of large-angle folding is achieved.
Further, in order to better implement the invention, the telescopic folding device comprises a actuating cylinder connected with the connecting shaft, and one end of the actuating cylinder, which is far away from the connecting shaft, is hinged with the outer wing/the inner wing.
Furthermore, in order to better realize the invention, the telescopic folding device also comprises a support rod arranged between the actuating cylinder and the connecting shaft; one end of the support rod is hinged with the actuating cylinder, and the other end of the support rod is connected with the connecting shaft.
Further, in order to better implement the invention, the actuating cylinder comprises a cylinder body and a piston rod, wherein one end of the cylinder body is hinged with the outer wing/the inner wing, and the piston rod is arranged in the cylinder body; and one end of the piston rod, which is far away from the cylinder body, is hinged with the support rod.
Furthermore, in order to better realize the invention, the cross section of the inner wing and the outer wing connecting joint is of an inverted triangular structure; one vertex of the inner wing connecting joint and the vertex of the outer wing connecting joint are in the same straight line with the axis of the connecting shaft in the length direction; connecting ear holes are respectively formed in the other two vertexes of the inner wing and outer wing connecting joint; the two connecting ear holes are respectively hinged with the inner wing lug and the outer wing lug.
Further, in order to better implement the present invention, the inner and outer wing connection joints are plural and mounted on the connection shaft.
Compared with the prior art, the invention has the following advantages and beneficial effects:
(1) the mechanism of the invention can ensure the aerodynamic shape of the wing, does not influence the flight performance of the airplane, and has large folding angle, low height after folding and small occupied space;
(2) the method has the advantages of operability, simple principle, wide applicability, short design period and low difficulty.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a simplified diagram of the working principle of the present invention;
FIG. 3 is a schematic diagram of the motion trajectory of the present invention;
the device comprises a connecting joint, an inner wing, an outer wing, a connecting shaft, a strut, a piston rod, an actuator cylinder, a connecting shaft, a circle center, a straight line segment 8-A, a straight line segment B with an adjustable length, a straight line segment 10-an outer wing and a straight line segment 11-an inner wing.
Detailed Description
The present invention will be described in further detail with reference to examples, but the embodiments of the present invention are not limited thereto.
Example 1:
the invention is realized by the following technical scheme, as shown in figures 1-3: a wing folding mechanism capable of being folded in a large angle through linear driving double rotation comprises a connecting shaft 2, an inner wing connecting joint 1 and an outer wing connecting joint 1 which are arranged on the connecting shaft 2, and a telescopic folding mechanism connected with the connecting shaft 2; the telescopic folding mechanism comprises two telescopic folding devices which have the same structure and are hinged with the connecting shaft 2; one end of the telescopic folding device, which is far away from the connecting shaft 2, is hinged with the outer wing, and the other end of the telescopic folding device, which is far away from the connecting shaft 2, is hinged with the inner wing.
The cross section of the inner and outer wing connecting joint 1 is of an inverted triangular structure; one vertex of the inner and outer wing connecting joint 1 and the axis of the connecting shaft 2 in the length direction are on the same straight line; the other two vertexes of the inner and outer wing connecting joint 1 are respectively hinged with an inner wing lug and an outer wing lug. The inner wing lug is connected with the inner wing, and the outer wing lug is connected with the outer wing.
The working principle is as follows:
the telescopic folding mechanisms are used as driving mechanisms of the device, the two telescopic folding devices are connected with the connecting shaft 2, the other end of one telescopic folding device is hinged with the inner wing, and the other end of the other telescopic folding device is hinged with the outer wing; the extension of the telescopic folding mechanism connected with the inner wing enables the position of a hinge point of the outer wing lug and the inner and outer wing connecting joint 1 to be raised, and the telescopic folding device hinged with the outer wing is driven to extend so as to drive the outer wing to rotate around the hinge point of the outer wing lug and the inner and outer wing connecting joint 1, so that the purpose of large-angle folding is achieved.
Other parts of this embodiment are the same as those of the above embodiment, and thus are not described again.
Example 2:
the present embodiment is further optimized on the basis of the above-mentioned embodiment, as shown in fig. 1, and further, in order to better implement the present invention, the telescopic folding device includes a ram 5 connected to the connecting shaft 2, and one end of the ram 5 away from the connecting shaft 2 is hinged to the outer wing/inner wing.
It should be noted that by the above improvements the ram 5 is prior art and in the hundreds of centuries there is a nominal explanation that "aircraft ram is by combination with a floating annular gap seal of the Servofloat mass class and a piston rod guided seal combination of the hydrostatic bearing of the Servobear mass class and by optimization of hydraulic peripherals and use of such high end standard hydraulic cylinders, new lower cost structures can be developed in testing and inspection as well as in precision oscillatory motion of other large mass objects. "
When the actuating cylinder is used, the actuating cylinder 5 hinged to the inner wing extends, the inner and outer wing connecting joints 1 mounted on the connecting shaft 2 and the outer wing connected with the inner and outer wing connecting joints 1 rotate around the hinge point of the inner and outer wing connecting joints 1 and the inner wing lug, so that the hinge point of the inner and outer wing connecting joints 1 and the outer wing lug rises, under the condition that the hinge point of the inner and outer wing connecting joints 1 and the outer wing lug rises, the actuating cylinder 5 connected with the outer wing extends to drive the outer wing and the outer wing rotates around the hinge point of the inner and outer wing connecting joints and the outer wing lug, and secondary rotary folding is realized, and the purpose of large-angle folding is achieved.
Other parts of this embodiment are the same as those of the above embodiment, and thus are not described again.
Example 3:
the present embodiment is further optimized on the basis of the above embodiment, as shown in fig. 2, and further, in order to better implement the present invention, the telescopic folding device further includes a stay rod 3 disposed between the actuating cylinder 5 and the connecting shaft 2; one end of the support rod 3 is hinged with the actuating cylinder 5, and the other end of the support rod is connected with the connecting shaft 2.
It should be noted that, with the above improvement, the actuator cylinder 5 is connected with the connecting shaft 2 through the stay bar 3; when the folding type actuating cylinder is used, the actuating cylinder 5 hinged to the inner wing extends, the inner and outer wing connecting joints 1 and the support rods 3 which are installed on the connecting shaft 2 and the outer wing connected with the inner and outer wing connecting joints 1 rotate around the hinge point of the inner and outer wing connecting joints 1 and the inner wing lug, so that the hinge point of the inner and outer wing connecting joints 1 and the outer wing lug rises, under the condition that the hinge point of the inner and outer wing connecting joints 1 and the outer wing lug rises, the actuating cylinder 5 connected with the outer wing extends to drive the outer wing and the outer wing rotates around the hinge point of the inner and outer wing connecting joint and the outer wing lug, and secondary rotating folding is achieved, and the purpose of large-angle folding is achieved.
Other parts of this embodiment are the same as those of the above embodiment, and thus are not described again.
Example 4:
the present embodiment is further optimized on the basis of the above-mentioned embodiment, as shown in fig. 1, and further, in order to better implement the present invention, the actuator cylinder 5 includes a cylinder body with one end hinged to the outer wing/inner wing, and a piston rod 4 installed in the cylinder body; and one end of the piston rod 4, which is far away from the cylinder body, is hinged with the support rod 3.
It should be noted that, through the above improvement, a chamber for the piston rod 4 to reciprocate is arranged in the cylinder; the piston rod 4 is installed in the cavity, and one end of the piston rod 4, far away from the cylinder body, penetrates through the cylinder body and is hinged with the support rod 3.
The strut 3 is connected with the actuator cylinder 5 and the connecting shaft 2, the strut 3 which is connected with the inner wing and is used for extending a piston rod 4 of the actuator cylinder 5 moves towards one side of the outer wing, and the strut 3 is rigidly connected with the connecting shaft 2 at one side far away from the inner wing, so that the connecting shaft 2 moves upwards under the driving of the strut 3, the hinged point of the inner and outer wing connecting joints 1 and the outer wing lug plate rises around the rotation of the inner and outer wing connecting joints 1 and the inner wing lug plate, the rotating point of the outer wing section is higher than the appearance of the wing, and the large angle can reach 180 degrees for folding the wing.
Other parts of this embodiment are the same as those of the above embodiment, and thus are not described again.
Example 5:
the present embodiment is further optimized on the basis of the above embodiment, as shown in fig. 1, and further, in order to better implement the present invention, the cross section of the inner and outer wing connecting joint 1 is an inverted triangle structure; one vertex of the inner and outer wing connecting joint 1 and the axis of the connecting shaft 2 in the length direction are on the same straight line; the other two vertexes of the inner and outer wing connecting joint 1 are respectively hinged with an inner wing lug and an outer wing lug. The inner wing lug is connected with the inner wing, and the outer wing lug is connected with the outer wing.
Further, in order to better implement the present invention, the inner and outer wing connection joints 1 are plural and are mounted on the connection shaft 2.
It is noted that, with the above-described modification, the preferred inverted triangle is an equilateral triangle.
Other parts of this embodiment are the same as those of the above embodiment, and thus are not described again.
Example 6:
the embodiment is further optimized on the basis of the above embodiment, and as shown in fig. 1, a linearly-driven dual-rotation wing folding mechanism capable of being folded at a large angle comprises a connecting shaft 2, an inner wing connecting joint 1 and an outer wing connecting joint 1 which are arranged on the connecting shaft 2, and a telescopic folding mechanism connected with the connecting shaft 2; the telescopic folding mechanism comprises two telescopic folding devices which have the same structure and are hinged with the connecting shaft 2; one end of the telescopic folding device, which is far away from the connecting shaft 2, is hinged with the outer wing, and the other end of the telescopic folding device, which is far away from the connecting shaft 2, is hinged with the inner wing. The inner wing lug on the inner and outer wing connecting joint 1 is connected with the inner wing, and the outer wing lug on the inner and outer wing connecting joint 1 is hinged with the outer wing; a cavity for installing the connecting shaft 2 and the telescopic folding mechanism is formed between the inner wing and the outer wing.
Further, in order to better implement the invention, the telescopic folding device comprises an actuating cylinder 5 connected with the connecting shaft 2, and one end of the actuating cylinder 5 far away from the connecting shaft 2 is hinged with the outer wing/the inner wing.
Further, in order to better implement the present invention, the telescopic folding device further comprises a stay bar 3 disposed between the actuating cylinder 5 and the connecting shaft 2; one end of the support rod 3 is hinged with the actuating cylinder 5, and the other end of the support rod is connected with the connecting shaft 2.
Further, in order to better implement the present invention, the actuating cylinder 5 comprises a cylinder body with one end hinged with the outer wing/inner wing, and a piston rod 4 installed in the cylinder body; and one end of the piston rod 4, which is far away from the cylinder body, is hinged with the support rod 3.
Further, in order to better realize the invention, the cross section of the inner wing and the outer wing connecting joint 1 is of an inverted triangular structure; one vertex of the inner and outer wing connecting joint 1 and the axis of the connecting shaft 2 in the length direction are on the same straight line; connecting ear holes are respectively formed in the other two vertexes of the inner and outer wing connecting joint 1; the two connecting ear holes are respectively hinged with the inner wing lug and the outer wing lug.
Further, in order to better implement the present invention, the inner and outer wing connection joints 1 are plural and are mounted on the connection shaft 2.
Referring to fig. 1, the wing folding mechanism capable of linearly driving, doubly rotating and folding in a large angle comprises an inner wing connecting joint 1, an outer wing connecting joint 1, a connecting shaft 2, a support rod 3 and an actuating cylinder 5 containing a piston rod 4. Wherein the inner and outer wing connecting joints 1 are respectively hinged with the inner wing lug and the outer wing lug and are rigidly connected with the connecting shaft 2; the connecting shaft 2 is rigidly connected with the stay bar 3; the support rod 3 is hinged with a piston rod 4 of the actuating cylinder 5; the actuator cylinder 5 is hinged to the inner wing or the outer wing.
With reference to fig. 2, the inner wing simplified fixed inner wing straight line segment 11 and the outer wing are simplified into an outer wing straight line segment 10, and the inner wing is connected with the fuselage, so that the fixed inner wing straight line segment 11 is fixed; the inner and outer wing connecting joints 1 are simplified into a triangle, three vertexes of the triangle are respectively an inner wing lug hinging point, an outer wing lug hinging point and a connecting shaft circle center 7, and the connecting shaft circle center 7 is generally designed on the same straight line in the long direction of a folding space because of the folding angle and the movement space requirement; the stay bar 3 is simplified into a straight line segment A8, and the angle between the stay bar 3 and the triangle is kept unchanged, so that the rigid connection effect of the stay bar 3 and the connecting joint is realized; the actuator cylinder 5 is simplified into a length-adjustable B straight line segment 9, and the extension and contraction effects of the piston rod 4 in the actuator cylinder 5 are simulated.
With reference to fig. 3, too high a position of the strut 3 results in a small folding angle, and too low a position results in interference of the folding process with the lower airfoil surface of the wing; too long stroke of the actuating cylinder 5 can occupy larger wing space, thus affecting the safety of the wing structure, and too short stroke can result in small folding angle. The folding process of the wing is simulated by adjusting the lengths of the two actuating cylinders 5, kinematic analysis is carried out, and various size and position parameters are optimized. Fig. 3 shows 5 states of the simultaneous extending and folding process of the two rams 5 connected to the inner and outer wings, respectively, in the folding time sequence, which are respectively designated by A, B, C, D, E, where a is the initial unfolded state and E is the final folded state.
Therefore, if the interference problem of the self structure of the airplane wing is not considered, the mechanism can be folded by 180 degrees without damaging the appearance of the wing, and is suitable for various folding wing variant airplanes, in particular to wing structures folded at large angles.
Other parts of this embodiment are the same as those of the above embodiment, and thus are not described again.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications and equivalent variations of the above embodiments according to the technical spirit of the present invention are included in the scope of the present invention.
Claims (2)
1. The utility model provides a but wing folding mechanism of linear drive dual rotation wide-angle folding which characterized in that: comprises a connecting shaft (2), an inner wing and outer wing connecting joint (1) arranged on the connecting shaft (2) and a telescopic folding mechanism connected with the connecting shaft (2); the telescopic folding mechanism comprises two telescopic folding devices which have the same structure and are hinged with the connecting shaft (2); one end of one telescopic folding device, which is far away from the connecting shaft (2), is hinged with the outer wing, and the other end of the other telescopic folding device, which is far away from the connecting shaft (2), is hinged with the inner wing; the telescopic folding device comprises an actuating cylinder (5) connected with the connecting shaft (2), and one end, far away from the connecting shaft (2), of the actuating cylinder (5) is hinged with the outer wing or the inner wing; the telescopic folding device also comprises a support rod (3) arranged between the actuating cylinder (5) and the connecting shaft (2); one end of the support rod (3) is hinged with the actuating cylinder (5), and the other end of the support rod is connected with the connecting shaft (2); the actuating cylinder (5) comprises a cylinder body and a piston rod (4), wherein one end of the cylinder body is hinged with the outer wing or the inner wing, and the piston rod is arranged in the cylinder body; one end of the piston rod (4) far away from the cylinder body is hinged with the support rod (3); the cross section of the inner and outer wing connecting joint (1) is of an inverted triangular structure; one vertex of the inner and outer wing connecting joint (1) and the axis of the connecting shaft (2) in the length direction are on the same straight line; the other two vertexes of the inner and outer wing connecting joint (1) are respectively hinged with an inner wing lug and an outer wing lug.
2. A linearly driven dual rotation large angle folding wing mechanism as claimed in claim 1, wherein: the inner wing and the outer wing are connected through the connecting joints (1) and are arranged on the connecting shaft (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811398795.0A CN109606631B (en) | 2018-11-22 | 2018-11-22 | Wing folding mechanism capable of being folded in large angle through linear driving and double rotation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811398795.0A CN109606631B (en) | 2018-11-22 | 2018-11-22 | Wing folding mechanism capable of being folded in large angle through linear driving and double rotation |
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| Publication Number | Publication Date |
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| CN109606631A CN109606631A (en) | 2019-04-12 |
| CN109606631B true CN109606631B (en) | 2022-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811398795.0A Active CN109606631B (en) | 2018-11-22 | 2018-11-22 | Wing folding mechanism capable of being folded in large angle through linear driving and double rotation |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112407241B (en) * | 2020-12-06 | 2024-06-04 | 西安长峰机电研究所 | Rotary folding mechanism |
| CN114379767B (en) * | 2022-01-14 | 2023-11-10 | 成都飞机工业（集团）有限责任公司 | Double-hinge mechanism based on middle-large unmanned aerial vehicle wing and angle indication method |
| CN114527008B (en) * | 2022-01-14 | 2024-03-15 | 成都飞机工业（集团）有限责任公司 | Device and method for simulating loading of folding gravity load of aircraft wing |
| CN118270226B (en) * | 2024-06-04 | 2024-08-06 | 西安羚控电子科技有限公司 | Folding and unfolding device of aircraft |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2723718A1 (en) * | 1994-08-22 | 1996-02-23 | Morel Pierre Emile Francois | Ultra-light pendulum aircraft wing for rapid and easy spreading and folding |
| CN103129735A (en) * | 2013-03-08 | 2013-06-05 | 北京航空航天大学 | Three-section dual-folding wing |
| CN103287570A (en) * | 2013-05-31 | 2013-09-11 | 西北工业大学 | Z-shaped folding wing mechanism |
| CN105711811A (en) * | 2016-01-27 | 2016-06-29 | 北京航空航天大学 | Wing folding mechanism |
| EP3263446A1 (en) * | 2016-06-29 | 2018-01-03 | Goodrich Actuation Systems Limited | Folding wing |
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2018
- 2018-11-22 CN CN201811398795.0A patent/CN109606631B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2723718A1 (en) * | 1994-08-22 | 1996-02-23 | Morel Pierre Emile Francois | Ultra-light pendulum aircraft wing for rapid and easy spreading and folding |
| CN103129735A (en) * | 2013-03-08 | 2013-06-05 | 北京航空航天大学 | Three-section dual-folding wing |
| CN103287570A (en) * | 2013-05-31 | 2013-09-11 | 西北工业大学 | Z-shaped folding wing mechanism |
| CN105711811A (en) * | 2016-01-27 | 2016-06-29 | 北京航空航天大学 | Wing folding mechanism |
| EP3263446A1 (en) * | 2016-06-29 | 2018-01-03 | Goodrich Actuation Systems Limited | Folding wing |
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| CN109606631A (en) | 2019-04-12 |
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