CN116374156A

CN116374156A - Wing telescoping mechanism, wing and wing telescoping method

Info

Publication number: CN116374156A
Application number: CN202310650714.6A
Authority: CN
Inventors: 刘勃; 严飞; 沈洋
Original assignee: Xian Lingkong Electronic Technology Co Ltd
Current assignee: Xian Lingkong Electronic Technology Co Ltd
Priority date: 2023-06-05
Filing date: 2023-06-05
Publication date: 2023-07-04

Abstract

The application discloses a wing telescoping mechanism, a wing and a wing telescoping method, wherein two sides of a fixed part of the wing telescoping mechanism are respectively provided with an installation side and an extension side, a first winch, a second winch and a power assembly are installed on the installation side, and a reversing pulley is installed on the extension side; the telescopic part is slidably arranged on the fixed part; a first driven gear is coaxially fixed on the first winch; the end part of the first rope wound on the first winch is connected with the telescopic part; a second driven gear is coaxially fixed on the second winch; the end part of the second rope wound on the second winch is connected to the telescopic part after bypassing the reversing pulley; the second rope is positioned at two sides of the reversing pulley and is respectively provided with a first section and a second section, and the movement direction of the first section is opposite to that of the second section; the drive gear of the power assembly is meshed with the first driven gear, and the first driven gear is meshed with the second driven gear. The telescopic wing solves the problems of complex structure and poor stability in the prior art.

Description

Wing telescoping mechanism, wing and wing telescoping method

Technical Field

The application belongs to the technical field of aircrafts, and particularly relates to a wing telescoping mechanism, a wing and a wing telescoping method.

Background

The aircraft technology has been mature and applied in various fields since the Laider brother invention. Most of the existing aircraft are fixed wing or rotor arrangements. Wherein the number of aircraft of the fixed wing arrangement is relatively large. In actual flight, the aircraft with the fixed wing layout has different lifting force required by different environments and stages. The change of lift can be achieved by changing the flight speed of the aircraft, but increasing the flight speed entails increasing fuel consumption, thereby reducing the cruising range of the aircraft. Varying lift can also be achieved by varying the area of the wing. At present, an aircraft adopts a telescopic wing to change the area of the wing, but the existing telescopic wing is complex in structure, large in size and easy to fail, or poor in stability, and the telescopic outer wing cannot be smoothly and smoothly telescopic.

Disclosure of Invention

According to the wing telescoping mechanism, the wing and the wing telescoping method, the problems of complex structure and poor stability of the telescoping wing in the prior art are solved.

In order to achieve the above object, an embodiment of the present invention provides a wing telescoping mechanism, including a telescoping portion, a fixing portion, and a retracting mechanism;

the retraction mechanism comprises a first winch, a second winch, a power assembly and a reversing pulley;

the two sides of the fixed part are respectively a mounting side and an extending side, the first winch, the second winch and the power assembly are mounted on the mounting side, and the reversing pulley is mounted on the extending side;

the telescopic part is slidably arranged on the fixed part;

a first driven gear is coaxially fixed on the first winch; the end part of the first rope wound on the first winch is connected with the telescopic part;

a second driven gear is coaxially fixed on the second winch; the end part of the second rope wound on the second winch bypasses the reversing pulley and is connected to the telescopic part;

the second rope is positioned at two sides of the reversing pulley and is respectively provided with a first section and a second section, and the movement direction of the first section is opposite to that of the second section;

the drive gear of the power assembly is meshed with the first driven gear, and the first driven gear is meshed with the second driven gear.

In one possible implementation, a limiting device is arranged on one side of each of the first winch and the second winch;

the limiting device comprises a mounting plate and a pressing plate;

the pressing plate is installed on the fixing part through the installation plate, the pressing plate has elasticity, the pressing surface of the pressing plate is parallel to the rotating shafts of the first winch and the second winch, and the pressing surface of the pressing plate is abutted to the first rope or the second rope.

In one possible implementation manner, the first rope or the second rope passes through the guide hole on the mounting plate, a part of the first rope in critical contact with the first winch and a part of the second rope in critical contact with the second winch are critical parts, and the pressing surface of the pressing plate is abutted against the critical parts.

In one possible implementation, the guide hole is located in the middle of the rope winding column of the first winch or the second winch in the vertical direction, and the axis of the guide hole is located in a tangential plane of the rope winding column of the first winch or the second winch.

In one possible implementation, the power assembly includes a motor, a reducer, a driving bevel gear, a driven bevel gear, and a drive gear;

the motor level sets up, the output shaft of motor connect in the input shaft of reduction gear, the output shaft of reduction gear connect in the pivot of initiative helical gear, initiative helical gear with driven helical gear meshing, drive gear with driven helical gear coaxial fixed, drive gear's pivot is vertical to be set up.

In one possible implementation manner, the number of the second winches is two, the two second winches are respectively arranged at two sides of the first winch, and each second winch is correspondingly provided with one reversing pulley.

In one possible implementation, the retraction mechanism further includes two limit switches, and the two limit switches are disposed on the mounting side and the extension side, respectively.

The embodiment of the invention also provides a wing, which adopts the wing telescoping mechanism;

the telescopic part is an outer wing; the fixed part is an inner wing, and the inner wing comprises a root rib, an end rib and two side beams;

the root rib, the end rib and the two side beams are connected to form a frame structure; the root rib is positioned on the installation side of the inner wing;

the inner wall of the side beam is provided with a guide rail; the pulley block at the rear end of the outer wing is slidably arranged in the guide rail;

the first section and the second section are located on both sides of the side member, respectively.

The embodiment of the invention provides a wing telescoping method, which adopts the wing and comprises the following steps:

when the outer wing contracts towards the mounting side of the inner wing:

the power assembly is controlled to work, the power assembly drives the first driven gear to rotate positively through the driving gear, and the first driven gear drives the first winch to rotate positively; the first rope pulls the outer wing to shrink towards the installation side of the inner wing;

when the outer wing extends to the extending side of the inner wing:

the power assembly is controlled to work, the power assembly drives the first driven gear to reversely rotate through the driving gear, and the first driven gear drives the second winch to positively rotate through the second driven gear; the second rope winds the reversing pulley and pulls the outer wing to extend to the extending side of the inner wing.

In one possible implementation manner, when the first rope or the second rope is wound on the top end or the bottom end of the rope winding column, the first rope or the second rope is wound in the direction of the middle part of the rope winding column under the action of the guide hole, and after the first rope or the second rope is wound on the middle part of the rope winding column, the first rope or the second rope continues to be wound in the direction under the action of inertia and friction force until the first rope or the second rope is wound on the other end of the rope winding column;

the first rope or the second rope is wound on the rope winding column according to the above movement mode, and in the process, when the critical part of the rope is to be wound on the first winch or the second winch, the pressing force of the pressing plate presses the critical part, so that the rope is wound orderly and smoothly.

One or more technical solutions provided in the embodiments of the present invention at least have the following technical effects or advantages:

the embodiment of the invention provides a wing telescoping mechanism, a wing and a wing telescoping method, wherein when the wing telescoping mechanism is contracted, a power assembly is controlled to work, the power assembly drives a first driven gear to rotate positively through a driving gear, and the first driven gear drives a first winch to rotate positively. The first rope pulls the telescopic part to move to the installation side of the fixed part, and then the contraction function of the wing telescopic mechanism is realized. When the wing telescopic mechanism stretches, the power assembly is controlled to work, the power assembly drives the first driven gear to reversely rotate through the driving gear, and the first driven gear drives the second winch to positively rotate through the second driven gear. The second rope winds the reversing pulley and then pulls the telescopic part to move to the extending side of the fixed part, so that the extending function of the wing telescopic mechanism is realized. The two winches of the wing telescoping mechanism are respectively responsible for the movement of the telescoping parts in two directions, the reversing pulleys can change the traction direction of the ropes, the wing telescoping mechanism is driven by one power assembly to realize the telescoping function and is driven by the first driven gear and the second driven gear, so that parts of all the retracting mechanisms are connected and fixed in the simplest and most reliable mode, the wing telescoping mechanism has higher safety, and all parts of the retracting mechanism of the embodiment are arranged densely and compactly, so that the wing telescoping mechanism has smaller volume compared with the existing structural form. The first rope and the second rope are both pulled by steel ropes and are matched with gear transmission, so that the wing telescopic mechanism is high in transmission precision and high in controllability. The part section of the second rope of the wing is positioned outside the side beam, so that the installation of the guide rail is not interfered, the wing has lower height in the vertical direction, and the installation requirement of the small unmanned aerial vehicle is met. The guide rails are arranged on the inner walls of the side beams at two sides of the wing, the pulley blocks are arranged at two sides of the rear end of the outer wing, each pulley block comprises two pulleys arranged at intervals, each pulley is arranged on an I-shaped structure at the rear end of the outer wing, and the outer wing is enabled to be smoother and smoother when the outer wing stretches out and draws back in the structural form. The wing layout provided by the embodiment of the invention has good interchangeability, and the retraction mechanisms in the wing layout at two sides are identical, so that the purposes of interchange and no influence on functions and performances of the aircraft can be realized. The wing telescoping mechanism adopted by the wing has the advantages of simple structure, high reliability and difficult fault occurrence, and can smoothly and smoothly telescope, thereby meeting the requirement of an aircraft on changing lift force and ensuring the maneuverability of the aircraft. According to the method, the winding mode of the first rope and the second rope can enable the ropes on the rope winding column to be kept in an orderly and smooth state, so that the length of the part of the ropes which are not wound on the first winch or the second winch is guaranteed, the extension and shortening of the telescopic part can be controlled accurately, the reliability of the telescopic function is guaranteed, the wing operation precision is improved, and the problem that the traction force of the ropes is unstable due to the fact that the ropes are stacked is avoided.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments described in the present application, and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.

Fig. 1 is a schematic structural diagram of a wing telescoping mechanism according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a retracting mechanism according to an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a retracting mechanism on an installation side according to an embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a power assembly according to an embodiment of the present invention.

Fig. 5 is a schematic structural diagram of a limiting device according to an embodiment of the present invention.

Fig. 6 is a schematic diagram of an arrangement of a wire outlet hole on a rope winding column of a first reel according to an embodiment of the present invention.

Reference numerals: 1-a telescoping part; 2-a fixing part; 21-mounting side; 22-the protruding side; 3-a first winch; 4-a second winch; 5-a power assembly; 51-a motor; 52-a decelerator; 53-driving helical gear; 54-driven helical gear; 55-driving gear; 6-reversing pulleys; 7-a first driven gear; 8-a second driven gear; 9-a limiting device; 91-mounting plates; 911-guiding holes; 92-a compacting plate; 10-a first rope; 11-a second rope; 111-first section; 112-a second section; 12-limit switch; 13-root ribs; 14-side beams; 15-a guide rail; 16-a guide pulley; 17-pulley block; 18-wire outlet holes.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the embodiments of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the embodiments of the present invention and simplify description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. The terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, the terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the embodiments of the present invention will be understood by those of ordinary skill in the art according to specific circumstances.

As shown in fig. 1 to 6, the wing telescoping mechanism provided by the embodiment of the invention comprises a telescoping portion 1, a fixing portion 2 and a retracting mechanism.

The retraction mechanism comprises a first winch 3, a second winch 4, a power assembly 5, and a diverting pulley 6.

The fixed part 2 has a mounting side 21 and an extending side 22 on both sides, the first capstan 3, the second capstan 4, and the power component 5 are mounted on the mounting side 21, and the diverting pulley 6 is mounted on the extending side 22.

The telescopic part 1 is slidably mounted on the fixed part 2.

A first driven gear 7 is coaxially fixed to the first capstan 3. The end of the first rope 10 wound around the first capstan 3 is connected to the expansion part 1.

A second driven gear 8 is coaxially fixed to the second capstan 4. The end of the second rope 11 wound around the second winch 4 passes around the diverting pulley 6 and is connected to the expansion and contraction part 1.

The second rope 11 is located on both sides of the diverting pulley 6 and is provided with a first segment 111 and a second segment 112, respectively, the movement direction of the first segment 111 is opposite to the movement direction of the second segment 112.

The drive gear 55 of the power assembly 5 is meshed with the first driven gear 7, and the first driven gear 7 is meshed with the second driven gear 8.

When the wing telescopic mechanism is contracted, the power assembly 5 is controlled to work, the power assembly 5 drives the first driven gear 7 to rotate forward through the driving gear 55, and the first driven gear 7 drives the first winch 3 to rotate forward. The first rope 10 pulls the telescopic part 1 to move to the mounting side 21 of the fixed part 2, and further the contraction function of the wing telescopic mechanism is realized. In the process, as the first driven gear 7 is meshed with the second driven gear 8, the first driven gear 7 can drive the second winch 4 to reversely rotate through the second driven gear 8, so that the second rope 11 is lengthened, and the function of elongating the wing telescoping mechanism is realized later.

When the wing telescopic mechanism stretches, the power assembly 5 is controlled to work, the power assembly 5 drives the first driven gear 7 to reversely rotate through the driving gear 55, and the first driven gear 7 drives the second winch 4 to positively rotate through the second driven gear 8. The second rope 11 passes through the reversing pulley 6 and then pulls the telescopic part 1 to move to the extending side 22 of the fixed part 2, so that the extending function of the wing telescopic mechanism is realized. In the process, the first driven gear 7 drives the first winch 3 to reversely rotate, so that the first rope 10 is lengthened, and the function of shortening the wing telescoping mechanism is realized later.

The two winches of the wing telescoping mechanism are respectively responsible for the movement of the telescoping part 1 in two directions, the reversing pulley 6 can change the traction direction of a rope, the wing telescoping mechanism is driven by one power assembly 5 to realize a telescoping function and is driven by the first driven gear 7 and the second driven gear 8, so that all parts of the wing telescoping mechanism are connected and fixed in the simplest and most reliable mode, the wing telescoping mechanism has higher safety, and all parts of the telescoping mechanism of the embodiment are arranged densely, so that the wing telescoping mechanism has smaller volume compared with the existing structural form. The first rope 10 and the second rope 11 are both pulled by steel ropes, and the wing telescopic mechanism is high in transmission precision and high in controllability by matching with gear transmission.

In this embodiment, the first winch 3 and the second winch 4 are provided with a limiting device 9 on each side.

The limiting device 9 includes a mounting plate 91 and a hold-down plate 92.

The pressing plate 92 is mounted on the fixing portion 2 through the mounting plate 91, the pressing plate 92 has elasticity, the pressing surface of the pressing plate 92 is parallel to the rotation shafts of the first capstan 3 and the second capstan 4, and the pressing surface of the pressing plate 92 abuts against the first rope 10 or the second rope 11.

It should be noted that, in the process of winding the rope on the first winch 3 or the second winch 4, the pressing force of the pressing plate 92 applies a certain pressure to the rope, so that the rope is orderly and smoothly wound, and the problem of unstable traction force of the rope caused by lamination of the ropes is avoided.

In this embodiment, the first rope 10 or the second rope 11 passes through the guide hole 911 in the mounting plate 91, and the portion of the first rope 10 that is in critical contact with the first capstan 3 and the portion of the second rope 11 that is in critical contact with the second capstan 4 are critical portions, and the pressing surface of the pressing plate 92 abuts against the critical portions.

When the critical portion of the rope is to be wound around the first capstan 3 or the second capstan 4, the pressing surface of the pressing plate 92 presses the critical portion, so that the rope is forced to be wound orderly and smoothly in a first time.

In this embodiment, the guide hole 911 is located at the middle of the rope winding column of the first winch 3 or the second winch 4 in the vertical direction, and the axis of the guide hole 911 is located in the tangential plane of the rope winding column of the first winch 3 or the second winch 4.

It should be noted that, in the process of winding the rope around the first reel 3 or the second reel 4, the rope has a certain tension, when the rope is wound around the top end or the bottom end of the rope winding column, the rope moves towards the middle of the rope winding column under the action of the guide hole 911 and winds simultaneously, after the rope is wound around the middle of the rope winding column, the rope moves and winds continuously according to the direction under the action of inertia and friction force until the rope is wound around the other end of the rope winding column, and then the next cycle winding is performed. The rope can be orderly and smoothly wound on the winch under the action of the guide hole 911 and the pressing plate 92, thereby ensuring the length of the portion of the rope which is not wound on the first winch 3 or the second winch 4, so as to accurately control the extension and shortening of the telescopic part 1, thereby ensuring the reliability of the telescopic function and improving the manipulation accuracy.

In this embodiment, as shown in fig. 6, the fixed end of the first rope 10 passes through the wire hole 18 on the rope winding column of the first winch 3 and then is connected to the rotating shaft in the center of the first winch 3, and the wire hole 18 is located at the top or bottom of the rope winding column.

The fixed end of the second rope 11 passes through the wire outlet hole 18 on the rope winding column of the second winch 4 and then is connected to the rotating shaft in the center of the second winch 4, and the wire outlet hole 18 is positioned at the top or bottom of the rope winding column.

It should be noted that, the tip of rope passes the winding rope post and fixes, can make winding rope on the winding rope post smooth and easy, does not have the arch, has avoided still having set up fixed establishment on the winding rope post, makes the rope appear unevenness in fixed establishment department, and leads to the problem that the rope is difficult to smooth and easy winding, and fixed establishment installs in the pivot department at first capstan 3 center promptly, and fixed establishment can adopt bolt fastening mode or link fixed mode.

The wire outlet hole 18 is located at the top or bottom of the rope winding column, so that one side of the rope is abutted against the side wall of the disc body at the end part of the winch when the rope is wound for the first time, and the rope can only move towards the middle part of the rope winding column and be wound when the winch rotates, thereby achieving the winding effect, avoiding the problem that the rope is intensively wound at the middle part of the rope winding column due to the fact that the wire outlet hole 18 is located at the middle part of the rope winding column and the rope loses the trend of moving towards the two sides of the rope winding column.

As shown in fig. 4, in the present embodiment, the power assembly 5 includes a motor 51, a reduction gear 52, a driving helical gear 53, a driven helical gear 54, and a driving gear 55.

The motor 51 is horizontally arranged, an output shaft of the motor 51 is connected to an input shaft of the speed reducer 52, an output shaft of the speed reducer 52 is connected to a rotating shaft of the driving bevel gear 53, the driving bevel gear 53 is meshed with the driven bevel gear 54, the driving gear 55 and the driven bevel gear 54 are coaxially fixed, and the rotating shaft of the driving gear 55 is vertically arranged.

It should be noted that the first winch 3, the second winch 4, and the power assembly 5 are installed between two corner plates, and the two corner plates are fixed by a vertical connection. Both ends of the driving bevel gear 53 are rotatably installed on the corner plate through the vertical plate to improve the stability thereof. Bearings are mounted at two ends of the whole of the driving gear 55 and the driven bevel gear 54, the bearings are mounted on the angle plates, the driving direction of the motor 51 can be converted through the driven bevel gear 54 and the driving bevel gear 53, the whole height of the mechanism is reduced, and the size is smaller. The gear transmission has the advantages of good meshing performance, stable transmission, low noise and high bearing capacity. Bearings are mounted at two ends of the winch and mounted on the angle plate. The speed reducer 52 increases the output torque of the motor 51, the speed reducer 52 adopts a planetary speed reducer, the size of the planetary speed reducer is smaller, the speed reduction ratio is larger, and the speed reducer and the speed regulating motor 51 can be integrated into a whole, so that the power assembly 5 provides the maximum torque under the smaller size. The power assembly 5 is driven by the motor 51, so that electric power can be easily obtained in the aircraft, and the electric power driving reliability is high and stable. The ratio of the drive gear 55 to the first driven gear 7 is 17:50, which further amplifies the working torque.

In this embodiment, the number of the second winches 4 is two, the two second winches 4 are respectively disposed on two sides of the first winch 3, and each second winch 4 is correspondingly provided with a reversing pulley 6.

It should be noted that, the two second winches 4 disposed at both sides of the first winch 3 can provide tension at both sides of the telescopic portion 1, so that the telescopic portion 1 moves more stably.

In this embodiment, the retracting mechanism further includes two limit switches 12, and the two limit switches 12 are respectively disposed on the mounting side 21 and the extending side 22.

It should be noted that, the limit switch 12 is used for judging the limit position of the telescopic part 1, so as to control the power assembly 5 to start and stop in time, and avoid the problem that the structure of the wing telescopic mechanism is damaged due to the continuous force application of the rope.

As shown in fig. 1 to 6, the wing provided by the embodiment of the invention adopts the wing telescoping mechanism.

The telescopic part 1 is an outer wing. The fixed part 2 is an inner wing comprising a root rib 13, an end rib, and two side beams 14.

The root rib 13, the end rib, and the two side members 14 are connected to form a frame structure. The root rib 13 is located on the mounting side 21 of the inner wing, which mounting side 21 is connected to the fuselage.

The inner walls of the side members 14 are fitted with guide rails 15. The pulley block 17 at the rear end of the outer wing is slidably mounted in the guide rail 15. The end ribs are provided with holes for the outer wings to pass through.

The first section 111 and the second section 112 are located on both sides of the side member 14, respectively.

In fig. 1, only the limit switch 12 near the mounting side 21 is shown, the limit switch 12 near the extension side 22 is mounted on the inner wall of the side beam 14, and the rear end of the outer wing is provided with a protrusion matching with the limit switch 12.

The guide pulley 16 and the diverting pulley 6 are respectively mounted at both ends of the side beam 14, and the end of the second rope 11 passes around the guide pulley 16, extends to the diverting pulley 6 along the outer side wall of the side beam 14, and passes around the diverting pulley 6 and is connected to the outer wing along the inner side wall of the side beam 14. The first section 111 of the second rope 11 is located outside the side beams 14 so as not to interfere with the mounting of the guide rails 15, so that the wing has a low height in the vertical direction, thus adapting to the mounting requirements of the unmanned aerial vehicle.

Guide rails 15 are arranged on the inner walls of the side beams 14 on two sides, pulley blocks 17 are arranged on two sides of the rear end of the outer wing, each pulley block 17 comprises two pulleys arranged at intervals, each pulley is arranged on an I-shaped structure of the rear end of the outer wing, and the outer wing is enabled to be smoother and smoother when the outer wing stretches out and draws back in the form of the structure.

The wing layout provided by the embodiment of the invention has good interchangeability, and the retraction mechanisms in the wing layout at two sides are identical, so that the purposes of interchange and no influence on functions and performances of the aircraft can be realized.

As shown in fig. 1 to 6, the wing telescoping method provided by the embodiment of the invention adopts the above-mentioned wing, and includes the following steps:

when the outer wing is retracted towards the mounting side 21 of the inner wing:

the power assembly 5 is controlled to work, the power assembly 5 drives the first driven gear 7 to rotate positively through the driving gear 55, and the first driven gear 7 drives the first winch 3 to rotate positively. The first rope 10 pulls the outer wing to retract towards the mounting side 21 of the inner wing.

When the outer wing is extended to the extended side 22 of the inner wing:

the power assembly 5 is controlled to work, the power assembly 5 drives the first driven gear 7 to reversely rotate through the driving gear 55, and the first driven gear 7 drives the first winch 3 to reversely rotate. The first driven gear 7 drives the second winch 4 to rotate forward through the second driven gear 8. The second rope 11 is led around diverting pulley 6 and pulls the outer wing out towards the protruding side 22 of the inner wing.

When the outer wing is contracted or extended, the rope in a non-traction state is wound out from the winch so as to change the extension length of the outer wing next time. The wing telescoping mechanism adopted by the wing has the advantages of simple structure, high reliability and difficult fault occurrence, and can smoothly and smoothly telescope, thereby meeting the requirement of an aircraft on changing lift force and ensuring the maneuverability of the aircraft.

In this embodiment, when the first rope 10 or the second rope 11 is wound around the top end or the bottom end of the winding stem, the first rope 10 or the second rope 11 is wound in the direction of the middle of the winding stem under the action of the guide hole 911, and after the first rope 10 or the second rope 11 is wound around the middle of the winding stem, the winding is continued in this direction under the action of inertia and friction until the first rope 10 or the second rope 11 is wound around the other end of the winding stem.

The first rope 10 or the second rope 11 is wound on the rope winding column in the above-described movement manner, and in this process, when the critical portion of the rope is to be wound on the first capstan 3 or the second capstan 4, the pressing force of the pressing plate 92 presses the critical portion, so that the rope is wound orderly and smoothly.

It should be noted that, the winding manner of the first rope 10 and the second rope 11 can keep the rope on the rope winding column in an orderly and smooth state, so as to ensure the length of the part of the rope which is not wound on the first winch 3 or the second winch 4, so as to accurately control the extension and shortening of the telescopic part 1, thereby ensuring the reliability of the telescopic function, improving the wing manipulation precision, and avoiding the unstable traction of the rope caused by the lamination of the ropes.

In the present embodiment, it will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, but that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. A wing telescoping mechanism, characterized in that: comprises a telescopic part (1), a fixed part (2) and a retraction mechanism;

the retraction mechanism comprises a first winch (3), a second winch (4), a power assembly (5) and a reversing pulley (6);

the two sides of the fixed part (2) are respectively provided with an installation side (21) and an extension side (22), the first winch (3), the second winch (4) and the power assembly (5) are installed on the installation side (21), and the reversing pulley (6) is installed on the extension side (22);

the telescopic part (1) is slidably arranged on the fixed part (2);

a first driven gear (7) is coaxially fixed on the first winch (3); the end part of a first rope (10) wound on the first winch (3) is connected with the telescopic part (1);

a second driven gear (8) is coaxially fixed on the second winch (4); the end part of a second rope (11) wound on the second winch (4) bypasses the reversing pulley (6) and is connected to the telescopic part (1);

the second rope (11) is positioned at two sides of the reversing pulley (6) and is respectively provided with a first section (111) and a second section (112), and the movement direction of the first section (111) is opposite to that of the second section (112);

the driving gear (55) of the power assembly (5) is meshed with the first driven gear (7), and the first driven gear (7) is meshed with the second driven gear (8).

2. The wing telescoping mechanism of claim 1, wherein: one side of each of the first winch (3) and the second winch (4) is provided with a limiting device (9);

the limiting device (9) comprises a mounting plate (91) and a pressing plate (92);

the pressing plate (92) is mounted on the fixing portion (2) through the mounting plate (91), the pressing plate (92) is elastic, a pressing surface of the pressing plate (92) is parallel to the rotating shafts of the first winch (3) and the second winch (4), and the pressing surface of the pressing plate (92) is abutted to the first rope (10) or the second rope (11).

3. The wing telescoping mechanism of claim 2, wherein: the first rope (10) or the second rope (11) passes through a guide hole (911) on the mounting plate (91), the critical contact part of the first rope (10) and the first winch (3) and the critical contact part of the second rope (11) and the second winch (4) are critical parts, and the pressing surface of the pressing plate (92) is abutted against the critical parts.

4. A wing retraction mechanism according to claim 3, wherein: the guide hole (911) is positioned in the middle of the rope winding column of the first winch (3) or the second winch (4) in the vertical direction, and the axis of the guide hole (911) is positioned in the tangent plane of the rope winding column of the first winch (3) or the second winch (4).

5. The wing telescoping mechanism of claim 1, wherein: the power assembly (5) comprises a motor (51), a speed reducer (52), a driving bevel gear (53), a driven bevel gear (54) and a driving gear (55);

the motor (51) is horizontally arranged, an output shaft of the motor (51) is connected with an input shaft of the speed reducer (52), an output shaft of the speed reducer (52) is connected with a rotating shaft of the driving bevel gear (53), the driving bevel gear (53) is meshed with the driven bevel gear (54), the driving gear (55) is coaxially fixed with the driven bevel gear (54), and the rotating shaft of the driving gear (55) is vertically arranged.

6. The wing telescoping mechanism of claim 1, wherein: the number of the second winches (4) is two, the two second winches (4) are respectively arranged on two sides of the first winch (3), and each second winch (4) is correspondingly provided with one reversing pulley (6).

7. The wing telescoping mechanism of claim 1, wherein: the retracting mechanism further comprises two limit switches (12), and the two limit switches (12) are respectively arranged on the installation side (21) and the extension side (22).

8. A wing, characterized in that: use of the wing telescoping mechanism of any one of claims 1 to 7;

the telescopic part (1) is an outer wing; the fixed part (2) is an inner wing, and the inner wing comprises a root rib (13), an end rib and two side beams (14);

the root rib (13), the end ribs and the two side beams (14) are connected to form a frame structure; the root rib (13) is located on the mounting side (21) of the inner wing;

the inner wall of the side beam (14) is provided with a guide rail (15); the pulley block (17) at the rear end of the outer wing is slidably arranged in the guide rail (15);

the first section (111) and the second section (112) are located on both sides of the side member (14), respectively.

9. A method of wing retraction, using the wing of claim 8, comprising the steps of:

when the outer wing is contracted towards the mounting side (21) of the inner wing:

the power assembly (5) is controlled to work, the power assembly (5) drives the first driven gear (7) to rotate positively through the driving gear (55), and the first driven gear (7) drives the first winch (3) to rotate positively; -the first rope (10) pulls the outer wing to retract towards the mounting side (21) of the inner wing;

when the outer wing is extended to the extending side (22) of the inner wing:

the power assembly (5) is controlled to work, the power assembly (5) drives the first driven gear (7) to reversely rotate through the driving gear (55), and the first driven gear (7) drives the second winch (4) to positively rotate through the second driven gear (8); the second rope (11) winds around the reversing pulley (6) and pulls the outer wing to extend towards the extending side (22) of the inner wing.

10. The wing telescoping method of claim 9, wherein: when the first rope (10) or the second rope (11) is wound on the top end or the bottom end of the rope winding column, the first rope (10) or the second rope (11) is wound in the direction of the middle part of the rope winding column under the action of the guide hole (911), and after the first rope (10) or the second rope (11) is wound on the middle part of the rope winding column, the first rope (10) or the second rope (11) is continuously wound in the direction under the action of inertia and friction until the first rope (10) or the second rope (11) is wound on the other end of the rope winding column;

the first rope (10) or the second rope (11) is wound on the rope winding column according to the above movement mode, and in the process, when the critical part of the rope is to be wound on the first winch (3) or the second winch (4), the pressing force of the pressing plate (92) presses the critical part, so that the rope is wound orderly and smoothly.