Folding configuration for an aircraft wing

Abstract

The application discloses a folding structure for an aircraft wing, comprising a base, a power source, a driving part and a driven part, the base is used for mounting the wing, the power source is used for providing power for the folding and unfolding of the wing, the driving part is driven by the power source to adjust the movement of the driven part on the base, and the driven part has a movement state I for the unfolding of the wing and a movement state II for the folding of the wing; the system control difficulty can be reduced, the assembly requirement can be simplified, and the maintenance convenience is improved.

Description

Technical Field

[0001] The present invention relates to the field of aircraft wings, and in particular to a folding structure for aircraft wings. Background Art

[0002] Currently, achieving multi-directional retraction and extension of fixed-wing aircraft wings requires multiple power systems, which increases the complexity and weight of the retraction and extension actuation system. Alternatively, the combined operation of multiple power systems places higher demands on control precision and transmission mechanism coordination, increasing system control complexity, assembly requirements, and hindering maintenance.

[0003] Therefore, in order to solve the above problems, a folding structure for aircraft wings is needed, which can reduce the difficulty of system control, simplify assembly requirements, and improve maintenance convenience. Summary of the Invention

[0004] In view of this, an object of the present invention is to overcome the defects in the prior art and provide a folding structure for aircraft wings, which can reduce the difficulty of system control, simplify assembly requirements, and improve maintenance convenience.

[0005] The folding structure for aircraft wings of the present invention includes a base, a power source, an active member and a driven member. The base is used to mount the wing. The power source is used to provide power for the wing to be retracted and extended, and the wing to be folded. The active member is driven by the power source to adjust the movement of the driven member on the base. The driven member has a motion state I for wing retraction and extension and a motion state II for wing folding.

[0006] Furthermore, it also includes a rotary joint that rotates and cooperates with the base, the blade root of the wing has a connecting part, the connecting part has a first end hinged to the rotary joint, the connecting part has a second end hinged to the follower through a connecting rod mechanism, the first end of the connecting rod mechanism is fixed to the follower, and the second end of the connecting rod mechanism is hinged to the second end of the connecting part.

[0007] Furthermore, the follower is driven by the active member to adjust the connecting rod mechanism to realize motion state I for wing retraction and extension, and the follower is driven by the active member to adjust the rotary joint to realize motion state II for wing folding.

[0008] Furthermore, the active component is a screw, which is driven to rotate by the output shaft of the power source. The axis of the output shaft, the axis of the rotary joint and the axis of the screw coincide with each other, so that the rotary joint can be driven to rotate the wing.

[0009] Further, the connecting rod mechanism is a planar two-connecting rod mechanism, the planar two-connecting rod mechanism comprises a first connecting rod and a second connecting rod, the first connecting rod is fixed to the driven member, and the second connecting rod is hinged to the connecting portion.

[0010] Further, the base is provided with a guide sliding groove parallel to the screw axis, the first connecting rod is fixed to the driven member and extends into the guide sliding groove, the driven member is provided with a threaded hole matched with the screw, and the first connecting rod is movably arranged in the guide sliding groove through the driven member and is limited in position, so that the wing folding is completed.

[0011] Further, the base is provided with a limiting clamping groove communicated with the guide sliding groove, the first connecting rod is located in the same plane as the limiting clamping groove after the wing folding is completed, at this time, the wing is limited in position in the axial direction of the screw, and the driven member is driven to rotate to limit the first connecting rod in the limiting clamping groove, and the wing is rotated through the rotary joint to complete the wing folding.

[0012] Further, the driven member is provided with a guide portion, and the base is provided with a guide groove for guiding the guide portion.

[0013] Further, the guide portion is formed by extending outward from the outer surface of the driven member in a direction perpendicular to the movement plane of the planar two-connecting rod mechanism, and the guide portion comprises a first guide portion and a second guide portion which are arranged on the two sides of the driven member in the axial direction of the screw.

[0014] Further, the base is provided with a first rotation-stopping groove matched with the first guide portion, and the base is provided with a second rotation-stopping groove matched with the second guide portion; the first guide portion is limited in position in the first rotation-stopping groove after the wing folding, and the second guide portion is limited in position in the second rotation-stopping groove after the wing folding.

[0015] The wing folding structure has the advantages that the wing folding structure for the aircraft wing comprises a base, a power source, a driving member and a driven member, the base is used for mounting the wing, the power source is used for providing power for the folding and unfolding of the wing, the driving member is driven by the power source to adjust the movement of the driven member on the base, the driven member has a movement state I for the folding and unfolding of the wing and a movement state II for the folding of the wing, the driven member has two states adjusted by the driving member, the wing can be driven to complete the folding and unfolding states by the same component, the use of movement pairs and transmission members is reduced, the complexity of the aircraft wing in completing the folding and unfolding states at the same time is reduced, the weight is obviously reduced, the control precision and the transmission matching precision are reduced, the assembly difficulty and the control difficulty are reduced, maintenance and assembly are facilitated, and the maintenance convenience is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] The application will be further described below in combination with the drawings and embodiments:

[0017] Figure 1Structure diagram of wing unfolding of the present application;

[0018] Figure 2 Structure diagram of the first connecting rod, the first guide part and the second guide part of the driven member of the present application;

[0019] Figure 3 Structure diagram of the base of the present application;

[0020] Figure 4 Structure diagram of wing folding of the present application.

[0021] Figure 5 Structure diagram of wing folding of the present application. DETAILED DESCRIPTION

[0022] Figure 1 Structure diagram of the present application, as shown in the figure, the folding structure for the aircraft wing 6 in the embodiment includes a base 1, a power source 2, a driving member 3 and a driven member 7, the base 1 is used for mounting the wing 6, the power source 2 is used for providing power for the folding and unfolding of the wing 6, the driving member 3 is driven by the power source 2 to adjust the movement of the driven member 7 on the base 1, and the driven member 7 has a movement state I for the unfolding of the wing 6 and a movement state II for the folding of the wing 6. The driven member 7 has two states adjusted by the driving member 3, so that the wing 6 can be driven to complete the unfolding and folding states by the same component, reducing the use of movement pairs and transmission members, reducing the complexity of the aircraft wing 6 completing the unfolding and folding states at the same time, significantly reducing the weight, reducing the control accuracy and transmission matching accuracy, reducing the assembly difficulty and control difficulty, facilitating maintenance and assembly, and improving the maintenance convenience.

[0023] In the embodiment, a rotary joint 5 is further included, which is rotatably connected to the base 1, the wing 6 has a connecting part, the connecting part has a first end part hinged to the rotary joint 5, the connecting part has a second end part hinged to the driven member 7 through a connecting rod mechanism, a first end part of the connecting rod mechanism is fixed to the driven member 7, and a second end part of the connecting rod mechanism is hinged to the second end part of the connecting part;

[0024] The driven member 7 is driven by the driving member 3 to adjust the connecting rod mechanism to achieve the movement state I for the unfolding of the wing 6, and the driven member 7 is driven by the driving member 3 to adjust the rotary joint 5 to achieve the movement state II for the folding of the wing 6;

[0025] The driving member 3 is a screw rod, the screw rod is driven to rotate by an output shaft of the power source 2, the axis of the output shaft, the axis of the rotary joint 5 and the axis of the screw rod coincide, so that the rotary joint 5 can be driven to rotate the wing 6;

[0026] The connecting rod mechanism is a planar two-connecting rod mechanism, which comprises a hinged first connecting rod 4 and a second connecting rod 7, the first connecting rod 4 is fixed to a driven member 7, and the second connecting rod 7 is hinged to a connecting portion; the base 1 is provided with a guide sliding groove 10 parallel to the screw axis, the first connecting rod 4 extends into the guide sliding groove 10 and is fixed to the driven member 7, the driven member 7 is provided with a threaded hole matched with the screw, and the first connecting rod 4 is movably arranged in the guide sliding groove 10 through the driven member 7 and can be limited, so as to complete the folding and unfolding of the wing 6;

[0027] The base 1 is provided with a limiting clamping groove 14 communicated with the guide sliding groove 10, the first connecting rod 4 is located in the same plane as the limiting clamping groove 14 after the wing 6 is folded, at this time, the wing 6 is limited in the axial direction of the screw, and the driven member 7 is driven to rotate when the screw is continuously rotated, so that the first connecting rod 4 is limited in the limiting clamping groove 14, and the wing 6 is rotated through the rotary joint 5 to complete the folding of the wing 6;

[0028] The driven member 7 is provided with a guide portion, and the base 1 is provided with a guide groove for guiding the guide portion; the guide portion is formed by extending outward from the outer surface of the driven member 7 in a direction perpendicular to the movement plane of the planar two-connecting rod mechanism, and the guide portion comprises a first guide portion 8 and a second guide portion 9 which are separately arranged on both sides of the driven member 7 in the axial direction of the screw; the base 1 is provided with a first rotation-stopping groove 11 matched with the first guide portion 8, and the base 1 is provided with a second rotation-stopping groove 13 matched with the second guide portion 9; the first guide portion 8 is limited in the first rotation-stopping groove 11 after the wing 6 is folded, and the second guide portion 9 is limited in the second rotation-stopping groove 13 after the wing 6 is folded;

[0029] As shown in the figure, the power source 2 is fixed on the base 1, the output shaft of the power source 2 drives the screw rod in a coaxial manner, the base 1 has a boss which supports the screw rod, the boss is two, the two bosses are arranged at the two ends of the screw rod along the axial direction of the screw rod, the rotary joint 5 is installed on the side of the base 1 away from the power source 2 in a rotating manner, and the rotary joint 5 is coaxial with the screw rod, the purpose of the rotary joint 5 is to change the setting direction of the wing 6 and reduce the occupied space of the wing 6, the blade root of the wing 6 is hinged to the rotary joint 5 through the first end of the connecting part; the guide chute 10 is opened on the top surface of the base 1 between the two bosses, and the opening direction of the guide chute 10 is parallel to the screw rod axis, the follower 7 is connected with the screw rod in a threaded manner, so that the follower 7 can be driven by the movement of the screw rod, and the wing 6 is connected through the planar two-link mechanism, more specifically, the first link 4 of the planar two-link mechanism extends into the guide chute 10 and is fixed to the follower 7, the second link 7 of the planar two-link mechanism is hinged to the second end of the connecting part of the blade root, the first end of the connecting part and the second end of the connecting part are located in the operation plane of the planar two-link mechanism, and the second end of the connecting part is arranged away from the first end of the connecting part along the axial direction of the screw rod, at this time, because the first link 4 of the planar two-link mechanism extends into the guide chute 10 and is fixed to the follower 7, the first link 4 of the planar two-link mechanism is movably limited in the guide chute 10, that is, the rotation of the screw rod can drive the follower 7 to forcibly drive the wing 6 to perform folding and unfolding action through the planar two-link mechanism, and the movement plane of the folding and unfolding action of the wing 6 is the operation plane of the planar two-link mechanism;

[0030] The follower 7 is connected with a guide part, the guide part includes the first guide part 8 and the second guide part 9 which are separately arranged on both sides of the follower 7 along the screw shaft; the first guide part 8 and the second guide part 9 are correspondingly arranged in the guide groove on the corresponding side, the guide groove includes the first guide groove 12 for limiting the sliding of the first guide part 8 and the second guide groove for limiting the sliding of the second guide part 9, the first guide groove 12 and the second guide groove are correspondingly arranged on the side surface of the base 1 and communicated with the guide sliding groove 10, as shown in the figure, the follower 7 is installed with the first guide part 8 and the second guide part 9 to form the "T" shaped structure, which further improves the guide and limiting function of the base 1 to the follower 7, the base 1 is provided with the first rotation stopping groove 11 matched with the first guide part 8, and the base 1 is provided with the second rotation stopping groove 13 matched with the second guide part 9; the first guide part 8 is limited in the first rotation stopping groove 11 after the wing 6 is folded, the second guide part 9 is limited in the second rotation stopping groove 13 after the wing 6 is folded, the first rotation stopping groove 11 and the second rotation stopping groove 13 are arranged on the base 1 along the shaft and close to the power source 2, when the wing 6 completes the folding and unfolding action, the follower 7 is limited on the base 1 along the shaft, at this time, the screw is continuously rotated in the previous rotation direction, the follower 7 is driven to rotate coaxially with the screw, so as to drive the wing 6 through the connecting rod mechanism, the wing 6 drives the rotary joint 5 to rotate, at this time, the wing 6 is folded, the first guide part 8 is limited in the first rotation stopping groove 11, the second guide part 9 is limited in the second rotation stopping groove 13, the rotation of the follower 7 drives the first guide part 8 to match with the first rotation stopping groove 11 and the second guide part 9 to match with the second rotation stopping groove 13, so as to limit the wing 6 on the base 1 after being folded, and complete the folding of the wing 6; when the wing 6 needs to be unfolded, the screw is reversely driven to reversely complete the unfolding action of the wing 6.

[0031] In the embodiment, the independent power source 2 is adopted to drive the follower 7 to complete the folding and unfolding action of the wing 6, which reduces the complexity of the structure, and the structure design is ingenious, which perfectly avoids the complex driving program and the structural defects in the prior art, and the light weight is particularly obvious, which is more in line with the carbon emission reduction standard.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application but not limit the present application, although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the purpose and scope of the present application, which should be covered in the scope of claims of the present application.

Claims

1. A folding configuration for an aircraft wing, characterised in that: The application relates to a wing folding mechanism, which comprises a base, a power source, a driving element and a driven element, the base is used for mounting a wing, the power source is used for providing power for wing folding and wing unfolding, the driving element is driven by the power source to adjust the movement of the driven element on the base, the driven element has a movement state I for wing unfolding and a movement state II for wing folding; a rotary joint is rotatably connected to the base, the wing root has a connecting part, the connecting part has a first end part hinged to the rotary joint, the connecting part has a second end part hinged to the driven element through a connecting rod mechanism, the first end part of the connecting rod mechanism is fixed to the driven element, and the second end part of the connecting rod mechanism is hinged to the second end part of the connecting part; the driven element is driven by the driving element to adjust the connecting rod mechanism to realize the movement state I for wing unfolding, and the driven element is driven by the driving element to adjust the rotary joint to realize the movement state II for wing folding; the driving element is a screw rod, the screw rod is driven to rotate by an output shaft of the power source, the axis of the output shaft, the axis of the rotary joint and the axis of the screw rod are coincident, so that the rotary joint can be driven to rotate the wing; the connecting rod mechanism is a planar two-connecting rod mechanism, the planar two-connecting rod mechanism comprises a hinged first connecting rod and a hinged second connecting rod, the first connecting rod is fixed to the driven element, and the second connecting rod is hinged to the connecting part; the base is provided with a guide sliding groove parallel to the axis of the screw rod, the first connecting rod is fixed to the driven element and extends into the guide sliding groove, the driven element is provided with a threaded hole matched with the screw rod, and the first connecting rod is movably arranged in the guide sliding groove through the driven element and is limited to complete wing unfolding.

2. The folding configuration for an aircraft wing according to claim 1, characterized in that: The base is provided with a limiting clamping groove communicated with the guide sliding groove, the first connecting rod is located in the same plane with the limiting clamping groove after the wing is folded, at this time, the wing is limited in the axial direction of the screw rod, the driven element is driven to rotate to limit the first connecting rod in the limiting clamping groove, and the wing is rotated through the rotary joint to complete wing folding.

3. The folding configuration for an aircraft wing according to claim 2, characterized in that: The driven element is provided with a guide part, and the base is provided with a guide groove for guiding the guide part.

4. The folding configuration for an aircraft wing according to claim 3, characterized in that: The guide part is formed by extending outward from the outer surface of the driven element in the direction perpendicular to the movement plane of the planar two-connecting rod mechanism, and the guide part comprises a first guide part and a second guide part which are arranged on the two sides of the driven element along the axial direction of the screw rod.

5. The folding configuration for an aircraft wing according to claim 4, characterized in that: The base is provided with a first rotation-stopping groove matched with the first guide part and a second rotation-stopping groove matched with the second guide part; the first guide part is limited in the first rotation-stopping groove after the wing is folded, and the second guide part is limited in the second rotation-stopping groove after the wing is folded.

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