CN219237356U

CN219237356U - Wing folding device capable of repeatedly folding and unfolding

Info

Publication number: CN219237356U
Application number: CN202320310302.3U
Authority: CN
Inventors: 阳舒; 黄代玲; 陈滨琦; 袁铜斌; 方琪鸿; 吴楠
Original assignee: University of Electronic Science and Technology of China
Current assignee: University of Electronic Science and Technology of China
Priority date: 2023-02-24
Filing date: 2023-02-24
Publication date: 2023-06-23
Anticipated expiration: 2033-02-24

Abstract

The utility model relates to a wing folding device capable of repeatedly folding and unfolding, which comprises a base, a bearing seat, a bearing, a wing and a motor, wherein the wing is provided with two ends, namely a first end and a second end, the first end of the wing is fixedly connected with the base through a rotating connecting piece in a rotating way, and the second end of the wing is a free end; the motor is arranged on the base, and is in gear transmission with the rotating connecting piece and used for driving the wing to rotate in a fixed shaft manner; the pair of wings are symmetrically arranged, and the two wings share a motor; the driving gear connected with the motor is meshed with the driven gear on one of the rotating connecting pieces, the driven gear on the other rotating connecting piece is meshed with the transmission gear, and the transmission gear is meshed with the driving gear. According to the wing unfolding and folding device, the unfolding and folding of the wings can be realized by changing the rotating direction of the motor, the forward and reverse rotation of the motor is easy to control, the operation is simple, the wing unfolding and folding device has the advantages of being capable of being unfolded and folded repeatedly, the wing storage of a freight glider is facilitated, and the requirements of a large-span wing on the lifting environment and the recycling and transportation can be reduced.

Description

Wing folding device capable of repeatedly folding and unfolding

Technical Field

The utility model relates to the technical field of air freight gliders/aircrafts, in particular to a wing folding device capable of repeatedly folding and unfolding.

Background

In recent years, a freight system for performing air drop by means of gliders has appeared in the field of air freight transportation. Because of the large wingspan of the glider, the enlarged wingspan glider is stored in the cabin of the transporter or the glider is hung on the helicopter, so that requirements are put on the body type of the glider and the folding storage of wings.

In addition, for a glider with a four-rotor power system capable of realizing vertical take-off and landing, the wings with large wingspan need to be in a folded state during vertical take-off and landing; during glide, the large span wing needs to be in an extended state. Therefore, for such a vertically liftable glider, there is a requirement for the wing to be repeatedly folded and unfolded.

The existing wing folding and unfolding modes mainly depend on torsion springs to realize transmission folding. The wing is unfolded through the torsion springs, the wing is unfolded once, the spring is required to store force again when being used next time, the speed of the wing unfolding is uncontrollable, the impact is large when the wing is unfolded, and the key stressed components are easy to damage. After the glider falls, the large-span wing cannot be folded and stored again, so that the recovery and transportation of the glider are not facilitated.

Disclosure of Invention

The application provides a wing folding device capable of repeatedly folding and unfolding in order to solve the technical problems.

The application is realized by the following technical scheme:

the wing folding device comprises a base, a wing and a motor, wherein the wing is provided with two ends, namely a first end and a second end, the first end of the wing is fixedly connected with the base in a rotating way, and the second end of the wing is a free end; the motor is arranged on the base and is used for driving the wing to rotate by the fixed shaft. Fixed axis rotation in this context means rotation with constant axis.

Optionally, the first end of the wing is rotatably connected to the base by a rotational connection.

Optionally, a bearing seat is installed on the base, a bearing is installed in the bearing seat, the rotating connecting piece is installed in the bearing seat and connected with the bearing in the bearing seat, the first end of the wing is fixedly connected with the rotating connecting piece, and the motor is connected with the rotating connecting piece.

Optionally, a driven gear is installed on the rotating connecting piece, an output shaft of the motor is connected with a driving gear, and the driving gear is in gear transmission with the driven gear. The device based on gear transmission and capable of repeatedly folding and unfolding can realize folding and unfolding actions of the wing, and after the wing is folded or unfolded, the locking effect on the wing can be achieved due to the position fixing effect of the motor.

In particular, the pair of wings is provided, the two wings are symmetrically arranged, and the two wings share one motor.

Optionally, a driving gear connected to the motor is meshed with a driven gear on one of the rotary connectors, and a driven gear on the other rotary connector is meshed with a driving gear, which is in turn meshed with the driving gear.

In particular, the base is plate-shaped, the wings and the motor are arranged above the base, and the driving gear, the driven gear and the transmission gear are arranged below the base; the base is provided with a first shaft hole matched with the rotary connecting piece, a second shaft hole is formed in the position, corresponding to the output shaft of the motor, of the base, and the bearing seat is arranged at the first shaft hole; the rotary connecting piece is arranged in a first shaft hole of the base, an output shaft of the motor is arranged in a second shaft hole, the lower end of the rotary connecting piece is connected with the driven gear, and the upper end of the rotary connecting piece is connected with the wing.

Optionally, the rotary connecting piece is hollow, so that the weight can be reduced.

Optionally, the motor is a servo motor.

In particular, the motor is internally provided with a speed reducing mechanism.

Compared with the prior art, the application has the following beneficial effects:

1, the wing unfolding speed of the existing freight glider is uncontrollable, the wing can not be unfolded and folded repeatedly, the wing of the freight glider can be conveniently stored, and the requirements of the large-span wing on the lifting environment, the recovery and the transportation can be reduced;

2, the rotating speed of the motor is adjustable, the folding and unfolding speeds are controllable, the collision caused by the rapid unfolding of the torsion spring is avoided, and the strength requirements on the wings and the folding mechanism are reduced.

3, folding and expansion angle of the wing folding device is easy to control, and the motor and the gear continuously rotate to drive the working state, so that the folding and expansion angle can be adjusted, and the wing can be more flexible and convenient to expand and fold.

Drawings

The accompanying drawings, which are included to provide a further understanding of embodiments of the present application and are incorporated in and constitute a part of this application, illustrate embodiments of the utility model.

FIG. 1 is a three-dimensional view of a wing folding device during wing deployment in an embodiment;

FIG. 2 is a front view of a wing folding device when the wing is unfolded in an embodiment;

FIG. 3 is a bottom view of the wing folding device during wing deployment in an embodiment;

FIG. 4 is a three-dimensional view of a base in an embodiment;

FIG. 5 is a three-dimensional view of a drive gear in an embodiment;

FIG. 6 is a three-dimensional view of a wing-folding device during wing folding in an embodiment;

fig. 7 is a three-dimensional view of a swivel joint in an embodiment.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments. It will be apparent that the described embodiments are some, but not all, of the embodiments of the utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.

In addition, the embodiments of the present utility model and the features of the embodiments may be combined with each other without collision. It should be noted that, in the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described as different from other embodiments, and identical and similar parts between the embodiments are all enough to be referred to each other.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "upper", "lower", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or directions or positional relationships conventionally put in place when the inventive product is used, or directions or positional relationships conventionally understood by those skilled in the art are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," 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 present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1, the wing folding device capable of repeatedly folding and unfolding disclosed in this embodiment includes a base 1, a wing 2 and a motor 5, where the wing 2 and the motor 5 are all mounted on the base 1. The base 1 may be used for fixing or integrally manufacturing with the body of a glider.

The wing 2 has two ends, respectively first end and second end, and the first end of wing 2 is connected with base 1 dead axle rotation, and the second end of wing 2 is the free end, and motor 5 is used for driving wing 2 dead axle rotation.

In one possible design, the first end of the wing 2 is rotatably connected to the base 1 by a rotational connection 3. The base 1 is provided with a bearing seat 4 which is matched with the rotary connecting piece, and the bearing seat 4 comprises a bearing. The rotating connecting piece 3 is arranged in the bearing seat 4 and is connected with a bearing in the bearing seat 4, so that the rotating connecting piece 3 can rotate relative to the base 1 in a fixed shaft manner, the first end of the wing 2 is fixedly connected with the rotating connecting piece 3, the motor 5 is connected with the rotating connecting piece 3, and the wing 2 is driven to rotate by driving the rotating connecting piece 3 to rotate, so that the wing 2 is folded and unfolded.

It should be noted that the diameter of the first shaft hole 11 is the same as the outer diameter of the rotary joint 3.

In one possible design, as shown in fig. 2 and 3, the driven gear 7 is mounted on the rotating connecting piece 3, and when the driven gear 7 rotates, the rotating connecting piece 3 rotates along with the driven gear 7; the output shaft of the motor 5 is connected with a drive gear 6, and the drive gear 6 is geared with a driven gear 7, so that the rotational movement of the motor 5 is transmitted to the rotational connection 3 and the wing 2.

It should be noted that one motor 5 may be provided for each wing 2, or one motor 5 may be shared by two or more wings 2.

In one possible design, there is a pair of wings 2, with two wings 2 symmetrically arranged. The two wings 2 share a single motor 5. Specific: the drive gear 6 connected to the motor 5 is engaged with the driven gear 7 on one of the rotary connectors 3, while the driven gear 7 on the other rotary connector 3 is engaged with the transmission gear 8, which transmission gear 8 is in turn engaged with the drive gear 6. The function of the transmission gear 8 is to change the direction of transmission so that the rotation directions of the two driven gears 7 are opposite.

In one possible design, the base 1 is plate-shaped, the wing 2 and the main machine of the motor 5 are all located above the base 1, and the driving gear 6, the driven gear 7 and the transmission gear 8 are all located below the base 1. The lower end of the rotary connecting piece 3 is connected with the driven gear 7, and the upper end is connected with the wing 2.

Correspondingly, as shown in fig. 4, the positions of the base 1 corresponding to the two rotating connecting pieces 3 are respectively provided with a first shaft hole 11, the bearing seat 4 is arranged at the first shaft hole 11, the first shaft hole 11 is matched with the rotating connecting pieces 3, and the rotating connecting pieces 3 are arranged in the first shaft hole 11 of the base 1. The base 1 is provided with a second shaft hole 12 corresponding to the output shaft of the motor 5, the second shaft hole 12 is used for penetrating out of the output shaft of the motor 5, and the output shaft of the motor 5 is connected with the driving gear 6.

In one possible design, the base 1 has a column corresponding to the position of the transmission gear 8, as shown in fig. 5, the transmission gear 8 has a column hole 81 in the center to fit with the column, and the transmission gear 8 is inserted into the column to achieve the effect of being mounted on the base 1.

In one possible design, the motor 5 and the bearing housing 4 are fixed to the base 1 by means of screws and nuts.

In one possible design, the swivel connection 3 is of hollow construction, as shown in fig. 7.

When the output shaft of the motor 5 rotates, the driving gear 6 can be driven to rotate. When the driving gear 6 rotates clockwise from the upper part of the wing 2, one driven gear 7, one rotary connecting piece 3 and one wing 2 synchronously rotate anticlockwise, the other driven gear 7 rotates clockwise, and the other rotary connecting piece 3 and the other wing 2 synchronously rotate clockwise, so that synchronous unfolding of the two wings 2 is realized; on the contrary, the two wings 2 are folded synchronously. The folding process and unfolding process of the wing 2 are opposite, and the action manner is similar to the wing unfolding, and will not be repeated here.

In one possible design, the parameters of the transmission gear 8 and the drive gear 6 are identical.

In one possible design, the reduction ratio between the drive gear 8 and the driven gear 7 is 19:8, 8; the reduction ratio between the driving gear 6 and the driven gear 7 is 19:8.

in one possible design, the motor 5 is a servo motor.

Optionally, a speed reducing mechanism is arranged in the motor 5, and the output of the output shaft is the rotating speed and the opposite torque output after the speed reduction. The rotating speed of the output shaft can be reduced, and the output torque of the output shaft can be improved.

In one possible design, the motor 5 is controlled by a position, and the motor 5 is operated by a control signal, which controls the rotation direction, the number of rotations and the rotation speed of the output shaft of the motor 5. When folding or unfolding is finished, the output shaft of the motor 5 can be kept at a specific position, and the motor can play a role in locking the wing position and can be kept in an unfolded or folded state.

In the initial state, as shown in fig. 6, the wing is in a folded state. In order to unfold the wings, the motor 5 rotates clockwise under the action of a control signal, and the output shaft of the motor 5 drives the driving gear 6 to rotate clockwise to drive the two wings 2 to rotate clockwise and anticlockwise respectively until unfolding; after the wing 2 is rotated and unfolded by 90 degrees, as shown in fig. 1, the motor 5 is stopped, the output shaft of the motor 5 is fixed in position, and the wing 2 can be maintained in the unfolded state due to the meshing of gears and the speed reducing mechanism.

The clockwise rotation and the anticlockwise rotation of the motor 5 respectively correspond to the unfolding and folding processes of the wing 2, the unfolding and folding actions of the wing 2 can be realized by changing the rotation direction of the motor 5, and the unfolding and folding speeds of the wing 2 can be changed by changing the rotation speed of the motor 5.

According to the folding and unfolding device, the wings are folded and unfolded through the cooperation of the motor and the gear, the unfolding and folding of the wings can be achieved by changing the rotating direction of the motor, the unfolding of the wings is achieved through forward rotation of the control motor, the folding of the wings is achieved through reverse rotation of the control motor, the folding and unfolding mode of the wings is achieved through reverse rotation of the control motor, the forward and reverse rotation of the motor is easy to control, and the folding and unfolding device has the advantages of being capable of being unfolded and folded repeatedly.

The foregoing detailed description has set forth the objectives, technical solutions and advantages of the present application in further detail, but it should be understood that the foregoing is only illustrative of the present utility model and is not intended to limit the scope of the present utility model, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the present utility model are intended to be included within the scope of the present utility model.

Claims

1. A wing folding device capable of repeatedly folding and unfolding, which is characterized in that: comprising the following steps:

a base (1);

the wing (2) is provided with two ends, namely a first end and a second end, the first end of the wing (2) is fixedly connected with the base (1) in a rotating way, and the second end of the wing (2) is a free end;

and the motor (5) is arranged on the base (1), and the motor (5) is used for driving the wing (2) to rotate by the fixed shaft.

2. A wing-fold device that can be repeatedly folded and unfolded as claimed in claim 1, wherein: the first end of the wing (2) is rotationally connected with the base (1) through a rotational connecting piece (3).

3. A wing-fold device that can be repeatedly folded and unfolded as claimed in claim 2, wherein: a bearing seat (4) is arranged on the base (1), and a bearing is arranged in the bearing seat (4);

the rotating connecting piece (3) is arranged in the bearing seat (4) and is connected with a bearing in the bearing seat (4), the first end of the wing (2) is fixedly connected with the rotating connecting piece (3), and the motor (5) is connected with the rotating connecting piece (3).

4. A wing-fold device that can be repeatedly folded and unfolded as claimed in claim 3, wherein: the rotary connecting piece (3) is provided with a driven gear (7), an output shaft of the motor (5) is connected with a driving gear (6), and the driving gear (6) is in gear transmission with the driven gear (7).

5. A wing-fold device that can be repeatedly folded and unfolded as claimed in claim 4, wherein: the pair of wings (2) is arranged, the two wings (2) are symmetrically arranged, and the two wings (2) share one motor (5).

6. A wing-fold device that can be repeatedly folded and unfolded as claimed in claim 5, wherein: the driving gear (6) connected with the motor (5) is meshed with the driven gear (7) on one rotating connecting piece (3), the driven gear (7) on the other rotating connecting piece (3) is meshed with the transmission gear (8), and the transmission gear (8) is meshed with the driving gear (6).

7. A wing-fold device that can be repeatedly folded and unfolded as claimed in claim 6, wherein: the base (1) is plate-shaped, the wings (2) and the motor (5) are arranged above the base (1), and the driving gear (6), the driven gear (7) and the transmission gear (8) are arranged below the base (1);

the base (1) is provided with a first shaft hole (11) which is matched with the rotary connecting piece (3), the position of the base (1) corresponding to the output shaft of the motor (5) is provided with a second shaft hole (12), and the bearing seat (4) is arranged at the first shaft hole (11);

the rotary connecting piece (3) is arranged in a first shaft hole (11) of the base (1), an output shaft of the motor (5) is arranged in a second shaft hole (12), the lower end of the rotary connecting piece (3) is connected with the driven gear (7), and the upper end of the rotary connecting piece (3) is connected with the wing (2).

8. A wing-fold device that can be repeatedly folded and unfolded as claimed in any of claims 1 to 7, wherein: the rotary connecting piece (3) is of a hollow structure.

9. A wing-fold device that can be repeatedly folded and unfolded as claimed in any of claims 1 to 7, wherein: the motor (5) is a servo motor.

10. A wing-fold device that can be repeatedly folded and unfolded as claimed in claim 9, wherein: the motor (5) is internally provided with a speed reducing mechanism.