CN113353238B - UAV wing folding mechanism and UAV - Google Patents
UAV wing folding mechanism and UAV Download PDFInfo
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- CN113353238B CN113353238B CN202110707446.8A CN202110707446A CN113353238B CN 113353238 B CN113353238 B CN 113353238B CN 202110707446 A CN202110707446 A CN 202110707446A CN 113353238 B CN113353238 B CN 113353238B
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- wing
- guide groove
- rotating shaft
- groove
- unmanned aerial
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C1/00—Fuselages; Constructional features common to fuselages, wings, stabilising surfaces or the like
- B64C1/30—Parts of fuselage relatively movable to reduce overall dimensions of aircraft
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C27/00—Rotorcraft; Rotors peculiar thereto
- B64C27/32—Rotors
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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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Pivots And Pivotal Connections (AREA)
Abstract
本发明公开了一种无人机机翼折叠机构及无人机，包括：第一机翼设置于转轴上且能够沿第一导向槽绕转轴旋转，第一弹性件设置于转轴上且连接于第一机翼与连接座之间；第二机翼设置于转轴上且能够沿第二导向槽绕转轴旋转，第二弹性件设置于转轴上且连接于第二机翼与堵头之间；限位装置可拆卸的设置于第一机翼与第二机翼之间，将第一机翼下压至第一导向槽的底端，将第二机翼上推至第二导向槽的顶端，使第一机翼位于第二机翼的下方，且与第二机翼的延伸方向相同。本发明的无人机机翼折叠机构形式简洁，结构紧凑，能够由折叠机翼状态快速过渡为平直机翼状态，且便于拆装。
The present invention discloses a wing folding mechanism for a UAV and a UAV, comprising: a first wing is arranged on a rotating shaft and can rotate around the rotating shaft along a first guide groove, a first elastic member is arranged on the rotating shaft and connected between the first wing and a connecting seat; a second wing is arranged on the rotating shaft and can rotate around the rotating shaft along a second guide groove, a second elastic member is arranged on the rotating shaft and connected between the second wing and a plug; a limiting device is detachably arranged between the first wing and the second wing, the first wing is pressed down to the bottom end of the first guide groove, and the second wing is pushed up to the top end of the second guide groove, so that the first wing is located below the second wing and has the same extension direction as the second wing. The UAV wing folding mechanism of the present invention is simple in form and compact in structure, can quickly transition from a folded wing state to a straight wing state, and is easy to disassemble and assemble.
Description
Technical Field
The invention belongs to the technical field of unmanned aerial vehicles, and particularly relates to an unmanned aerial vehicle wing folding mechanism and an unmanned aerial vehicle.
Background
Along with the continuous progress of unmanned aerial vehicle technique, unmanned aerial vehicle is widely used in various fields such as military affairs, civilian, in order to improve unmanned aerial vehicle's storage and transportation's convenience, need decompose unmanned aerial vehicle when necessary, therefore the dismouting between each part of unmanned aerial vehicle is accomplished simply and conveniently swiftly. In addition, part of unmanned aerial vehicles cannot realize autonomous take-off, take-off is needed by means of ejection, cylindrical ejection and the like, the wings are in a folded state when in ejection or cylindrical ejection take-off, and the wings are required to be quickly changed into a straight wing state from the folded state after take-off.
Therefore, development of an unmanned aerial vehicle wing folding mechanism and an unmanned aerial vehicle capable of realizing rapid transition of wing states and convenient disassembly and assembly is expected.
Disclosure of Invention
The invention aims to provide an unmanned aerial vehicle wing folding mechanism and an unmanned aerial vehicle, which are applicable to ejection or cylindrical ejection take-off, realize rapid transition of wing states and are convenient to disassemble, assemble and transport.
In order to achieve the above object, the present invention provides an unmanned aerial vehicle wing folding mechanism, comprising:
The rotating shaft is provided with a connecting seat at the bottom end and a plug at the top end, a first guide groove and a second guide groove are arranged on the side surface of the rotating shaft, the first guide groove and the second guide groove are spiral and parallel to each other, and the first guide groove is positioned on one side, close to the connecting seat, of the second guide groove;
The first wing is arranged on the rotating shaft and can rotate around the rotating shaft along the first guide groove, and the first elastic piece is arranged on the rotating shaft and is connected between the first wing and the connecting seat;
the second wing is arranged on the rotating shaft and can rotate around the rotating shaft along the second guide groove, and the second elastic piece is arranged on the rotating shaft and is connected between the second wing and the plug;
the limiting device is detachably arranged between the first wing and the second wing, the first wing is pressed down to the bottom end of the first guide groove, the second wing is pushed up to the top end of the second guide groove, and the first wing is positioned below the second wing and has the same extending direction as the second wing;
demolish stop device, first elastic component can promote first wing is followed first guide slot rotates to the top of first guide slot, second elastic component can promote the second wing is followed the second guide slot rotates to the bottom of second guide slot, makes first wing with the high the same and opposite extending direction of second wing.
Optionally, a first swivel is arranged at the root of the first wing, a first sliding block is arranged in the first guide groove, and the first wing is sleeved on the rotating shaft through the first swivel and is connected with the first sliding block;
The root of the second wing is provided with a second swivel, a second sliding block is arranged in the second guide groove, and the second wing is sleeved on the rotating shaft through the second swivel and connected with the second sliding block.
Optionally, the first slider includes a first body portion and a first connection portion that are connected to each other, the first body portion is disposed in the first guide groove, the first connection portion protrudes out of a side surface of the rotating shaft, and a top surface of the first swivel is connected to a bottom surface of the first connection portion;
the second slider comprises a second main body part and a second connecting part which are connected with each other, the second main body part is arranged in the second guide groove, the second connecting part protrudes out of the side face of the rotating shaft, and the bottom face of the second rotating ring is connected to the top face of the second connecting part.
Optionally, a first limit groove is formed in the top surface of the first swivel, a second limit groove is formed in the bottom surface of the second swivel, and when the first wing is located at the top end of the first guide groove, the second wing is located at the bottom end of the second guide groove, the second connecting portion can be embedded into the first limit groove, and the first connecting portion can be embedded into the second limit groove.
Optionally, a first groove is formed in a side wall, close to the plug, of the first guide groove, the first groove is close to the top end of the first guide groove, and when the first sliding block is located at the top end of the first guide groove, the upper end of the first main body part can be embedded into the first groove;
The side wall of the second guide groove, which is close to the connecting seat, is provided with a second groove, the second groove is close to the bottom end of the second guide groove, and when the second sliding block is positioned at the bottom end of the second guide groove, the lower end of the second main body part can be embedded into the second groove.
Optionally, the limiting device is an explosion bolt, a first threaded hole is formed in the first sliding block, and a second threaded hole is formed in the second sliding block;
when the first wing is positioned at the bottom end of the first guide groove and the second wing is positioned at the top end of the second guide groove, the first threaded hole is coaxial with the second threaded hole, and two ends of the explosion bolt are respectively arranged in the first threaded hole and the second threaded hole.
Optionally, the first elastic element comprises a first pressure spring and a first torsion spring, the outer diameter of the first pressure spring is smaller than the inner diameter of the first torsion spring, the first pressure spring is sleeved on the rotating shaft and connected between the first wing and the connecting seat, the first torsion spring is sleeved on the first pressure spring, and two ends of the first torsion spring are respectively connected to the first wing and the connecting seat;
The second elastic piece comprises a second pressure spring and a second torsion spring, the outer diameter of the second pressure spring is smaller than the inner diameter of the second torsion spring, the second pressure spring is sleeved on the rotating shaft and connected between the second wing and the plug, the second torsion spring is sleeved on the second pressure spring, and two ends of the second torsion spring are respectively connected to the second wing and the plug.
Optionally, the plug includes retaining ring and nut, the top of pivot is equipped with the external screw thread, the nut with the pivot passes through threaded connection, the retaining ring set up in between the nut and the second elastic component.
Optionally, the rotating shaft is a hollow shaft, and the connecting seat is a flange.
The invention further provides the unmanned aerial vehicle, and the unmanned aerial vehicle wing folding mechanism is arranged on the unmanned aerial vehicle.
The unmanned aerial vehicle wing folding mechanism has the beneficial effects that the unmanned aerial vehicle wing folding mechanism is simple in form, the rotating shaft comprises the guide groove, the connecting seat and the plug, the guide groove is used for installing the elastic piece and the wing, the assembly structure is compact, the volume of the rotating mechanism is reduced, the limiting device is arranged between the first wing and the second wing to fix the folding angle between the wings, the wings are in a folding state, after the unmanned aerial vehicle is ejected or reeled off, the limiting device is removed, the limitation between the wings is released, and the wings are quickly sprung out under the action of the thrust and torsion of the first elastic piece and the second elastic piece, so that the state of the folded wings is quickly transited to a straight wing state, and the unmanned aerial vehicle wing folding mechanism is convenient to disassemble and assemble.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The foregoing and other objects, features and advantages of the invention will be apparent from the following more particular descriptions of exemplary embodiments of the invention as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the invention.
Fig. 1 shows a schematic view of a folding state of a wing folding mechanism of an unmanned aerial vehicle according to an embodiment of the present invention.
Fig. 2 shows a schematic view of an unfolded state of a wing fold mechanism of a drone according to one embodiment of the invention.
Fig. 3 shows a schematic diagram of the deployment process of the unmanned aerial vehicle wing folding mechanism according to one embodiment of the invention.
Fig. 4 shows a schematic structural view of a first wing according to an embodiment of the invention.
Fig. 5 shows a schematic structural view of a second wing according to an embodiment of the invention.
Fig. 6 shows a schematic structural view of a rotating shaft according to an embodiment of the present invention.
Fig. 7 shows a schematic structural view of a nut according to an embodiment of the present invention.
Fig. 8 shows a schematic structural view of a retainer ring according to an embodiment of the present invention.
Fig. 9 shows a schematic structural view of the second torsion spring according to one embodiment of the present invention.
Fig. 10 shows a schematic structural view of a second compression spring according to an embodiment of the present invention.
Fig. 11 shows a schematic structural view of a second slider according to an embodiment of the present invention.
Fig. 12 shows a schematic structural view of an explosive bolt according to an embodiment of the present invention.
Fig. 13 shows a schematic structural view of a first slider according to an embodiment of the present invention.
Fig. 14 shows a schematic structural view of the first torsion spring according to one embodiment of the present invention.
Fig. 15 shows a schematic structural view of a first compression spring according to an embodiment of the present invention.
Description of the reference numerals
1. The first wing, 101, a first swivel, 102, a first wing threaded hole, 103, a first limit groove, 2, a second wing, 201, a second swivel, 202, a second wing threaded hole, 203, a second limit groove, 3, a rotating shaft, 301, a second guide groove, 302, a first guide groove, 303, a countersunk hole, 304, a first groove, 305, a second groove, 4, a nut, 5, a retainer ring, 6, a second torsion spring, 7, a second compression spring, 8, a second slider, 801, a second connecting part, 802, a second connecting hole, 803, a second threaded hole, 9, an explosion bolt, 901, a second threaded end, 902, a first threaded end, 10, a first slider, 1001, a first connecting part, 1002, a first connecting hole, 1003, a first threaded hole, 11, a first torsion spring, 12 and a first compression spring.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the preferred embodiments of the present invention are described below, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
The invention discloses an unmanned aerial vehicle wing folding mechanism, comprising:
The rotating shaft is provided with a connecting seat at the bottom end, a plug is arranged at the top end, a first guide groove and a second guide groove are arranged on the side surface of the rotating shaft, the first guide groove and the second guide groove are spiral and parallel to each other, and the first guide groove is positioned on one side of the second guide groove close to the connecting seat;
The first wing and the first elastic piece are arranged on the rotating shaft and can rotate around the rotating shaft along the first guide groove, and the first elastic piece is arranged on the rotating shaft and is connected between the first wing and the connecting seat;
The second wing and the second elastic piece are arranged on the rotating shaft and can rotate around the rotating shaft along the second guide groove, and the second elastic piece is arranged on the rotating shaft and is connected between the second wing and the plug;
The limiting device is detachably arranged between the first wing and the second wing, the first wing is pressed down to the bottom end of the first guide groove, the second wing is pushed up to the top end of the second guide groove, and the first wing is positioned below the second wing and has the same extending direction as the second wing;
Demolish stop device, first elastic component can promote first wing along first guide way rotatory to the top of first guide way, and the second elastic component can promote the second wing along the rotatory bottom to the second guide way of second guide way, makes the high same and opposite extending direction of first wing and second wing.
Specifically, the unmanned aerial vehicle wing folding mechanism is simple in form, the rotating shaft comprises the guide groove, the connecting seat and the plug, the elastic piece and the wing are installed on the rotating shaft, the assembly structure is compact, the volume of the rotating mechanism is reduced, the limiting device is arranged between the first wing and the second wing to fix the folding angle between the wings, the wings are in a folding state, after the unmanned aerial vehicle is ejected or barrel-ejected to take off, the limiting device is removed, the limit between the wings is released, and the wings are quickly sprung out under the action of the thrust and torsion of the first elastic piece and the second elastic piece, so that the folding wing state is quickly transited to a straight wing state, and the unmanned aerial vehicle wing folding mechanism is convenient to disassemble and assemble.
Further, due to the design of the spiral guide groove, the wing has a height difference in a folded state, so that the interference problem of the folded wing is effectively avoided, the height of the wing in a straight machine state is kept consistent, and the flight stability is ensured.
As an alternative scheme, the root of the first wing is provided with a first swivel, a first sliding block is arranged in the first guide groove, and the first wing is sleeved on the rotating shaft through the first swivel and is connected with the first sliding block;
the root of the second wing is provided with a second swivel, a second sliding block is arranged in the second guide groove, and the second wing is sleeved on the rotating shaft through the second swivel and connected with the second sliding block.
Specifically, the wing is installed by utilizing the matching of the swivel and the sliding block, so that the wing can rotate around the swivel and can move along the guide groove, and the wing is unfolded and folded.
As an alternative scheme, the first sliding block comprises a first main body part and a first connecting part which are connected with each other, the first main body part is arranged in the first guide groove, the first connecting part protrudes out of the side surface of the rotating shaft, and the top surface of the first rotating ring is connected to the bottom surface of the first connecting part;
The second slider includes interconnect's second main part and second connecting portion, and second main part sets up in the second guide way, and the side of second connecting portion outstanding pivot, the bottom surface of second swivel is connected on the top surface of second connecting portion.
Specifically, the top surface of the first swivel is connected to the bottom surface of the first connecting portion, the bottom surface of the second swivel is connected to the top surface of the second connecting portion, connection of the first elastic piece and the first swivel and connection of the second elastic piece and the second swivel are facilitated, and pushing effect of the elastic piece on the wing is guaranteed.
As an alternative, be equipped with first spacing groove on the top surface of first swivel, be equipped with the second spacing groove on the bottom surface of second swivel, when first wing is located the top of first guide way, and the second wing is located the bottom of second guide way, second connecting portion can imbed in the first spacing groove, and first connecting portion can imbed in the second spacing groove.
Specifically, through setting up first spacing groove and second spacing groove, make the mutual joint spacing of a pair of wings under the state of expanding, fixed contained angle between a pair of wings makes the relative position between a pair of wings keep unchanged in the flight.
As an alternative scheme, a first groove is formed in the side wall, close to the plug, of the first guide groove, the first groove is close to the top end of the first guide groove, and when the first sliding block is located at the top end of the first guide groove, the upper end of the first main body part can be embedded into the first groove;
the side wall of the second guide groove, which is close to the connecting seat, is provided with a second groove, the second groove is close to the bottom end of the second guide groove, and when the second sliding block is positioned at the bottom end of the second guide groove, the lower end of the second main body part can be embedded into the second groove.
Specifically, through setting up first recess and second recess, can be in the position of a pair of slider of a pair of wing fixed under the state of expansion, avoid a pair of wing to take place to rotate for the pivot, improve wing stability.
As an alternative scheme, the limiting device is an explosion bolt, a first threaded hole is formed in the first sliding block, and a second threaded hole is formed in the second sliding block;
When the first wing is located the bottom of first guide way, and the second wing is located the top of second guide way, first screw hole and second screw hole coaxial, explosion bolt's both ends set up respectively in first screw hole and second screw hole.
Specifically, adopt explosion bolt as stop device, can be after unmanned aerial vehicle takes off, through sending the instruction to explosion bolt, detonate its inside explosive, make it break by oneself, release the spacing between a pair of wing to open fast, by folding state fast transition to straight wing state.
As an alternative scheme, the first elastic piece comprises a first pressure spring and a first torsion spring, the outer diameter of the first pressure spring is smaller than the inner diameter of the first torsion spring, the first pressure spring is sleeved on the rotating shaft and connected between the first wing and the connecting seat, the first torsion spring is sleeved on the first pressure spring, and two ends of the first torsion spring are respectively connected to the first wing and the connecting seat;
The second elastic piece comprises a second pressure spring and a second torsion spring, the outer diameter of the second pressure spring is smaller than the inner diameter of the second torsion spring, the second pressure spring is sleeved on the rotating shaft and connected between the second wing and the plug, the second torsion spring is sleeved on the second pressure spring, and two ends of the second torsion spring are respectively connected to the second wing and the plug.
Specifically, the first elastic piece and the second elastic piece are sleeved on the rotating shaft through torsion springs and pressure springs with different diameters, and simultaneously provide torsion and thrust, so that the volume of the rotating mechanism is reduced as much as possible while the wing rotating and unfolding functions are realized.
As an alternative scheme, the plug comprises a check ring and a nut, the top of the rotating shaft is provided with external threads, the nut is connected with the rotating shaft through threads, and the check ring is arranged between the nut and the second elastic piece.
Specifically, the plug adopts the retainer ring and the nut, is convenient to detach and can provide stable and reliable supporting force for the elastic piece.
As an alternative, the rotating shaft is a hollow shaft, and the connecting seat is a flange.
Specifically, the pivot design can lighten the weight of structure for hollow structure, and the connecting seat adopts flange structure, makes things convenient for with unmanned aerial vehicle's connection and dismantlement.
The invention also discloses an unmanned aerial vehicle, which is provided with the unmanned aerial vehicle wing folding mechanism.
Specifically, the wing folding mechanism of the unmanned aerial vehicle is simple in form, compact in assembly mode, light in weight and convenient to assemble, disassemble and maintain, can reduce the transportation space of the unmanned aerial vehicle, realize the rapid assembly of the unmanned aerial vehicle, and can realize the folding and rapid unfolding of the wing.
Examples
The embodiment discloses an unmanned aerial vehicle wing folding mechanism, fig. 1 is a folding wing state, fig. 2 is a straight wing state, and fig. 3 is a schematic diagram of an unfolding process from the folding wing state to the straight wing state. As shown in fig. 1 and 2, the unmanned aerial vehicle wing folding mechanism comprises a first wing 1, a second wing 2, a rotating shaft 3, a nut 4, a retainer ring 5, a second torsion spring 6, a second compression spring 7, a second slide block 8, an explosion bolt 9, a first slide block 10, a first torsion spring 11 and a first compression spring 12.
As shown in fig. 4, a first swivel 101 is arranged at the root of the first wing 1, and a first limit groove 103 and a pair of first wing threaded holes 102 are arranged on the top surface of the first swivel 101;
As shown in fig. 5, a second swivel 201 is arranged at the root of the second wing 2, and a second limit groove 203 and a pair of second wing threaded holes 202 are arranged on the bottom surface of the second swivel 201;
As shown in fig. 6, a connecting flange is arranged at the bottom end of a rotating shaft 3, a first guide groove 302 and a second guide groove 301 are arranged on the side surface of the rotating shaft 3, the first guide groove 302 and the second guide groove 301 are spiral and are parallel to each other, the first guide groove 302 is positioned on one side of the second guide groove 301 close to the connecting flange, a first groove 304 is arranged on the side wall of the first guide groove 302 close to the top end of the rotating shaft 3, and a second groove 305 is arranged on the side wall of the second guide groove 301 close to the connecting flange;
Fig. 7 is a nut 4, which is used for being connected with the upper end of the rotating shaft 3 through threaded fit, fig. 8 is a retainer ring 5, and an inner ring of the retainer ring 5 is provided with internal threads, which are used for being matched with external threads at the upper end of the rotating shaft 3;
fig. 9 shows the second torsion spring 6, fig. 10 shows the second compression spring 7, and the inner diameter of the second torsion spring 6 is larger than the outer diameter of the second compression spring 7;
as shown in fig. 11, the second slider 8 includes a second main body portion and a second connection portion 801 that are connected to each other, and the second connection portion 801 is provided with a second connection hole 802 and a second screw hole 803;
fig. 12 shows an explosive bolt 9, wherein two ends of the explosive bolt 9 are respectively provided with a first threaded end 902 and a second threaded end 901;
As shown in fig. 13, the first slider 10 includes a first main body portion and a first connection portion 1001 which are connected to each other, and the first connection portion 1001 is provided with a first connection hole 1002 and a first screw hole 1003;
Fig. 14 shows the first torsion spring 11, and fig. 15 shows the first compression spring 12, wherein the inner diameter of the first torsion spring 11 is larger than the outer diameter of the first compression spring 12.
The positional relationship of the respective members is as follows:
the first compression spring 12 is sleeved at the bottom of the rotating shaft 3, the first torsion spring 11 is sleeved on the first compression spring 12, so that interference does not occur between the first compression spring 12 and the first compression spring, the lower end face of the first torsion spring 11 is fixed on the upper surface of a connecting flange at the bottom end of the rotating shaft 3, and the inner diameter of the first torsion spring 11 is larger than the outer diameter of the first compression spring 12, so that interference does not occur between the first torsion spring 11 and the first compression spring 12, and an annular groove is formed in the upper surface of the connecting flange to prevent interference between the first torsion spring 11 and the first compression spring 12, so that the lower ends of the first torsion spring 11 and the first compression spring 12 are respectively located in the annular groove to realize limiting;
The first wing 1 is sleeved on the rotating shaft 3 through a first rotating ring 101, and the lower surface of the first rotating ring 101 is fixedly connected with the upper end surface of a first torsion spring 11;
the first main body part of the first slider 10 is slidably arranged in the first guide groove 302, the lower surface of the first connecting part 1001 is attached to the upper surface of the first rotating ring 101, and the first connecting holes 1002 on the first connecting part 1001 are in one-to-one correspondence with the first wing threaded holes 102 on the first rotating ring 101 and are fastened and connected by matching with countersunk screws;
The second main body part of the second sliding block 8 is slidably arranged in the second guide groove 301;
The first threaded end 902 of the explosion bolt 9 is arranged in a first threaded hole 1003 on the first connecting part 1001, the second threaded end 901 is arranged in a second threaded hole 803 on the second connecting part 801, and the relative positions of the first sliding block 10 and the second sliding block 8 are fixed;
The second wing 2 is sleeved on the rotating shaft 3 through a second swivel 201, the lower surface of the second swivel 201 is attached to the upper surface of a second connecting part 801, and second connecting holes 802 on the second connecting part 801 are in one-to-one correspondence with second wing threaded holes 202 on the second swivel 201 and are fastened and connected by matching with countersunk screws;
The second pressure spring 7 is sleeved on the upper part of the rotating shaft 3, the second torsion spring 6 is sleeved on the second pressure spring 7, the second torsion spring 6 has an inner diameter larger than the outer diameter of the second pressure spring 7, so that the second torsion spring 6 and the second pressure spring do not interfere, and the lower end surface of the second torsion spring 6 is fixed on the upper surface of the second rotating ring 201;
The retainer ring 5 is screwed on the upper end of the rotating shaft 3, the upper end face of the second torsion spring 6 is fixed on the lower surface of the retainer ring 5, and in order to prevent interference of the second torsion spring 6 and the retainer ring 5, annular grooves are formed in the lower surface of the retainer ring 5, so that the upper ends of the second torsion spring 6 and the second pressure spring 7 are respectively located in one annular groove, and limiting is achieved;
the nut 4 is screwed on the upper end of the rotating shaft 3 and is attached to the retainer ring 5.
Under the limiting action of the explosion bolt 9, the first wing 1 is pressed down to the bottom end of the first guide groove 302, the first pressure spring 12 is compressed, and the first torsion spring 11 is twisted tightly; the second wing 2 is pushed up to the top end of the second guide groove 301, the second compression spring 7 is compressed, the second torsion spring 6 is twisted tightly, and at the moment, the first wing 1 is located below the second wing 2 and has the same extending direction as the second wing 2;
After unmanned aerial vehicle catapult-assisted take-off, through sending the instruction to explosion bolt 9, the explosive explosion of explosion bolt 9 inside, the spacing of first wing 1 and second wing 2 is relieved, under the combined action of first pressure spring 12 and first torsional spring 11, first wing 1 rotates to the top of first guide slot 302 along first guide slot 302, under the combined action of second pressure spring 7 and second torsional spring 6, second wing 2 rotates to the bottom of second guide slot 301 along second guide slot 301, the high same and opposite extending direction of first wing 1 and second wing 2 this moment.
When the first wing 1 is located at the top end of the first guide groove 302 and the second wing 2 is located at the bottom end of the second guide groove 301, the second connection portion 801 can be embedded in the first limiting groove 203, the first connection portion 1001 can be embedded in the second limiting groove 203, the upper end of the first main body portion can be embedded in the first groove 304, and the lower end of the second main body portion can be embedded in the second groove 305.
The unmanned aerial vehicle wing folding mechanism is simple in form, the rotating shaft comprises functional area designs such as a guide groove, a connecting flange and an external thread at the upper end, folding of the wing, transmission of wing load to a fuselage and rapid disassembly and assembly of the wing are achieved, the assembly mode is compact, torsion springs and pressure springs with different diameters are sleeved on the rotating shaft, the wing folding function is achieved, meanwhile, the volume of the rotating mechanism is reduced as much as possible, a pair of wings have height differences in a folded wing state through the design of the spiral guide groove, interference of the folded wing is effectively avoided, the heights of the pair of wings can be kept consistent in a flat wing state, folding angles of the pair of wings are fixed through explosion bolts, rapid transition of the wing from the folded wing state to the flat wing state is achieved through explosive materials in the explosion bolts, the whole mechanism is light in weight, disassembly and maintenance are convenient, the transportation space of the unmanned aerial vehicle can be reduced, and rapid assembly of the unmanned aerial vehicle is achieved.
The foregoing description of embodiments of the invention has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described.
Claims (10)
1. An unmanned aerial vehicle wing folding mechanism, comprising:
The rotating shaft is provided with a connecting seat at the bottom end and a plug at the top end, a first guide groove and a second guide groove are arranged on the side surface of the rotating shaft, the first guide groove and the second guide groove are spiral and parallel to each other, and the first guide groove is positioned on one side, close to the connecting seat, of the second guide groove;
The first wing is arranged on the rotating shaft and can rotate around the rotating shaft along the first guide groove, and the first elastic piece is arranged on the rotating shaft and is connected between the first wing and the connecting seat;
the second wing is arranged on the rotating shaft and can rotate around the rotating shaft along the second guide groove, and the second elastic piece is arranged on the rotating shaft and is connected between the second wing and the plug;
the limiting device is detachably arranged between the first wing and the second wing, the first wing is pressed down to the bottom end of the first guide groove, the second wing is pushed up to the top end of the second guide groove, and the first wing is positioned below the second wing and has the same extending direction as the second wing;
demolish stop device, first elastic component can promote first wing is followed first guide slot rotates to the top of first guide slot, second elastic component can promote the second wing is followed the second guide slot rotates to the bottom of second guide slot, makes first wing with the high the same and opposite extending direction of second wing.
2. The unmanned aerial vehicle wing folding mechanism of claim 1, wherein a first swivel is arranged at the root of the first wing, a first sliding block is arranged in the first guide groove, and the first wing is sleeved on the rotating shaft through the first swivel and is connected with the first sliding block;
The root of the second wing is provided with a second swivel, a second sliding block is arranged in the second guide groove, and the second wing is sleeved on the rotating shaft through the second swivel and connected with the second sliding block.
3. The unmanned aerial vehicle wing-fold mechanism of claim 2, wherein the first slider comprises a first body portion and a first connection portion that are connected to each other, the first body portion being disposed in the first guide slot, the first connection portion protruding from a side surface of the rotating shaft, a top surface of the first swivel being connected to a bottom surface of the first connection portion;
the second slider comprises a second main body part and a second connecting part which are connected with each other, the second main body part is arranged in the second guide groove, the second connecting part protrudes out of the side face of the rotating shaft, and the bottom face of the second rotating ring is connected to the top face of the second connecting part.
4. The unmanned aerial vehicle wing folding mechanism of claim 3, wherein a first limit groove is formed in the top surface of the first swivel, a second limit groove is formed in the bottom surface of the second swivel, and when the first wing is located at the top end of the first guide groove and the second wing is located at the bottom end of the second guide groove, the second connecting portion can be embedded in the first limit groove, and the first connecting portion can be embedded in the second limit groove.
5. The unmanned aerial vehicle wing folding mechanism of claim 3, wherein a first groove is formed in a side wall of the first guide groove, which is close to the plug, and the first groove is close to the top end of the first guide groove, and when the first slider is located at the top end of the first guide groove, the upper end of the first main body part can be embedded into the first groove;
The side wall of the second guide groove, which is close to the connecting seat, is provided with a second groove, the second groove is close to the bottom end of the second guide groove, and when the second sliding block is positioned at the bottom end of the second guide groove, the lower end of the second main body part can be embedded into the second groove.
6. The unmanned aerial vehicle wing folding mechanism of claim 2, wherein the limiting device is an explosion bolt, a first threaded hole is formed in the first slider, and a second threaded hole is formed in the second slider;
when the first wing is positioned at the bottom end of the first guide groove and the second wing is positioned at the top end of the second guide groove, the first threaded hole is coaxial with the second threaded hole, and two ends of the explosion bolt are respectively arranged in the first threaded hole and the second threaded hole.
7. The unmanned aerial vehicle wing folding mechanism of claim 1, wherein the first elastic piece comprises a first pressure spring and a first torsion spring, the outer diameter of the first pressure spring is smaller than the inner diameter of the first torsion spring, the first pressure spring is sleeved on the rotating shaft and connected between the first wing and the connecting seat, the first torsion spring is sleeved on the first pressure spring, and two ends of the first torsion spring are respectively connected to the first wing and the connecting seat;
The second elastic piece comprises a second pressure spring and a second torsion spring, the outer diameter of the second pressure spring is smaller than the inner diameter of the second torsion spring, the second pressure spring is sleeved on the rotating shaft and connected between the second wing and the plug, the second torsion spring is sleeved on the second pressure spring, and two ends of the second torsion spring are respectively connected to the second wing and the plug.
8. The unmanned aerial vehicle wing folding mechanism of claim 1, wherein the plug comprises a retainer ring and a nut, the top of the rotating shaft is provided with external threads, the nut is in threaded connection with the rotating shaft, and the retainer ring is arranged between the nut and the second elastic piece.
9. The unmanned aerial vehicle wing-fold mechanism of claim 1, wherein the shaft is a hollow shaft and the connecting seat is a flange.
10. An unmanned aerial vehicle, wherein the unmanned aerial vehicle is provided with an unmanned aerial vehicle wing folding mechanism according to any one of claims 1 to 9.
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| CN109367760A (en) * | 2018-09-21 | 2019-02-22 | 北京大翔航空科技有限公司 | A kind of light-duty unmanned plane wing-folding unfolding mechanism |
| CN109263858A (en) * | 2018-10-30 | 2019-01-25 | 彩虹无人机科技有限公司 | A kind of coaxial wingfold mechanism |
| TR201903055A2 (en) * | 2019-02-28 | 2020-09-21 | Tuerkiye Bilimsel Ve Teknolojik Arastirma Kurumu Tuebitak | WING OPENING AND LOCKING SYSTEM |
| CN211711047U (en) * | 2019-12-26 | 2020-10-20 | 中国航空工业集团公司西安飞机设计研究所 | Coaxial folding wing |
| CN212685894U (en) * | 2020-04-28 | 2021-03-12 | 北京航天嘉诚精密科技发展有限公司 | Guide slot type fin folding mechanism |
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