Telescopic driving mechanism for folding wings of unmanned aerial vehicle

Abstract

The utility model provides a telescopic driving mechanism for folding wings of an unmanned aerial vehicle, which belongs to the technical field of aviation transmission actuation and is characterized in that a rolling guide component in the mechanism comprises four groups of guide pieces, and a flexible transmission medium sequentially passes through the four groups of guide pieces and is wound on a power device; the first outer wing check ring and the second outer wing check ring are fixedly connected with the flexible transmission medium; the first outer wing check ring and the second outer wing check ring are installed on the first outer wing and the second outer wing respectively. The mechanism is excellent in synchronism, one flexible conveying medium is connected with the wings on the two sides, and the consistency of telescopic driving of the multiple wings can be guaranteed; the deformation adaptability is high, and the flexible transmission medium is high in wing deformation adaptability; the structure is simple, and the flexible transmission medium is flexible in layout, safe and reliable; the size and the length of the flexible conveying medium are easy to control, and large-displacement telescopic driving can be achieved; compared with a rigid transmission scheme, the pulley and the flexible transmission medium configuration have obvious weight advantages.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the aviation transmission action technology field, concretely relates to a folding wing telescopic drive mechanism of unmanned plane. BACKGROUND

[0002] The large aspect ratio aircraft is beneficial to the economy of the aircraft cruising, but the large aspect ratio aircraft occupies too large space in the storage and transportation and loading process, and the folding wing aircraft solves the problem.

[0003] The wing telescopic mechanism of the folding wing aircraft should have large displacement driving capacity and excellent synchronism; in the cruising process, the wing will be deformed, and the telescopic driving device should have certain deformation adaptability; the telescopic transmission device also needs to have the characteristics of light weight, simple structure and low cost. UTILITY MODEL CONTENT

[0004] In order to solve the technical problem that the wing telescopic mechanism of the folding wing aircraft in the prior art cannot meet the use requirement, the utility model provides a folding wing telescopic drive mechanism of unmanned plane, utilizes the flexible medium principle of pulley transmission, sets the motion track of flexible transmission medium by using the rolling guide assembly, and drives the folding wing to extend and retract, the wing telescopic mechanism of the folding wing aircraft has large displacement driving capacity and excellent synchronism; in the cruising process, the telescopic driving device has certain deformation adaptability; the telescopic transmission device has the characteristics of light weight, simple structure and low cost; and is suitable for large stroke telescopic drive in the narrow space inside the folding wing of the morphing unmanned aircraft.

[0005] A folding wing telescopic drive mechanism of unmanned plane, comprising a rolling guide assembly, a flexible transmission medium, a first outer wing check ring, a second outer wing check ring and a power device,

[0006] The rolling guide assembly comprises four groups of guide pieces, the first group of guide pieces and the second group of guide pieces are installed on the first inner wing of the unmanned plane, the second group of guide pieces is located outside the first group of guide pieces, the third group of guide pieces and the fourth group of guide pieces are installed on the second inner wing of the unmanned plane, and the fourth group of guide pieces is located outside the third group of guide pieces;

[0007] The flexible transmission medium passes through the four groups of guide pieces in sequence and is wound on the power device;

[0008] The first outer wing check ring and the second outer wing check ring are fixedly connected with the flexible transmission medium; and the first outer wing check ring and the second outer wing check ring are installed on the first outer wing and the second outer wing respectively.

[0009] In a kind of realizable mode, each group of guide pieces includes two pulleys,

[0010] The line connecting the center points of the two pulleys of the first set of guide members and the line connecting the center points of the two pulleys of the third set of guide members are symmetrical with respect to the central axis.

[0011] The line connecting the center points of the two pulleys of the second set of guide members and the line connecting the center points of the two pulleys of the fourth set of guide members are symmetrical about the central axis.

[0012] In one possible implementation, the power source is an electric motor.

[0013] In one feasible approach, the flexible transmission medium is a steel cable.

[0014] In one possible implementation, the motor is mounted on the machine body.

[0015] In one possible implementation, each set of guide elements also includes a fixing element for fixing the pulley.

[0016] The beneficial effects of this utility model are at least as follows:

[0017] 1. Excellent synchronization: A flexible transmission medium connects the two wings, ensuring the consistency of the extension and retraction drive of multiple wings;

[0018] 2. Strong deformation adaptability; the flexible transmission medium is highly adaptable to wing deformation.

[0019] 3. Simple configuration, flexible layout of flexible transmission medium, safe and reliable;

[0020] 4. The flexible transmission medium has simple size and length control, and can realize large displacement telescopic drive;

[0021] 5. Compared to rigid transmission solutions, pulley and flexible transmission medium configurations have significant weight advantages;

[0022] 6. Low cost: The design, manufacturing, assembly, and materials of each component are low-cost, giving it a clear advantage in unmanned aerial vehicles. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a folding wing telescopic drive mechanism for a drone according to the present invention;

[0024] Figure 2 This is a schematic diagram of the extended wing of this utility model;

[0025] Figure 3 This is a schematic diagram of the wing retracted state of this utility model;

[0026] Figure 4 This is a schematic diagram of the wing of this utility model in level flight.

[0027] Figure 5 This is a schematic diagram of the inverted state of the wing of this utility model. DETAILED DESCRIPTION

[0028] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0029] The features and illustrative embodiments of various aspects of the present application will be described below in detail. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one of ordinary skill in the art that the present application can be practiced without some of these specific details. The following description of embodiments is merely exemplary in nature and is provided to give a better description of the application. The present application is not limited to any particular setting or method as set forth below, but covers any modifications, equivalents, and alternatives falling within the spirit of the present application. In the drawings and the following description, well-known structures and techniques are not shown in order to avoid unnecessary obscurity of the present application.

[0030] It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict, and each embodiment can be mutually referred to and quoted. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0031] The present application will be described in detail below in combination with the drawings and specific embodiments.

[0032] The embodiment of the utility model adopts single set of power device transmission single flexible conveying medium, guarantees two side wing synchronous extension consistency, adopts 2 group outer wing baffle ring installation in mobile end, as driving force action point changes mobile end's displacement, adopts rolling guide assembly constraint track, cable or similar flexible conveying medium transmits load, through power device rotation flexible transmission medium, realizes to motion part drive's configuration, adopts 4 group rolling guide assembly installation in wing fixed position, is used to constraint and guide flexible conveying medium's movement track.

[0033] Please refer to Figure 1 The embodiment of the utility model provides a folding wing telescopic drive mechanism of unmanned plane, including pulley, cable, motor, first outer wing baffle ring 9, second outer wing baffle ring 10,

[0034] The first pulley 1, the second pulley 2, the third pulley 3, the fourth pulley 4, the fifth pulley 5, the sixth pulley 6, the seventh pulley 7 and the eighth pulley 8 are fixed pulleys, the first pulley 1 and the second pulley 2 form a group, the third pulley 3 and the fourth pulley 4 form a group, the fifth pulley 5 and the sixth pulley 6 form a group, the seventh pulley 7 and the eighth pulley 8 form a group, the first pulley 1, the second pulley 2, the third pulley 3 and the fourth pulley 4 are installed on the first inner wing 13 of the unmanned aerial vehicle, and the third pulley 3 and the fourth pulley 4 are located outside the first pulley 1 and the second pulley 2, and the fifth pulley 5, the sixth pulley 6, the seventh pulley 7 and the eighth pulley 8 are installed on the second inner wing 15 of the unmanned aerial vehicle, and the seventh pulley 7 and the eighth pulley 8 are located outside the fifth pulley 5 and the sixth pulley 6.

[0035] The first inner wing 13 and the second inner wing 15 are fixed structures as a whole, providing fixed positions for installation of all pulleys.

[0036] The steel cable 12 passes through the first pulley 1, the second pulley 2, the third pulley 3, the fourth pulley 4, the fifth pulley 5, the sixth pulley 6, the seventh pulley 7 and the eighth pulley 8 in sequence and is wound on the motor 11, and the motor 11 is installed on the machine body.

[0037] The line connecting the center points of the first pulley 1 and the second pulley 2 is symmetrical to the line connecting the center points of the fifth pulley 5 and the sixth pulley 6 with respect to the central axis;

[0038] The line connecting the center points of the third pulley 3 and the fourth pulley 4 is symmetrical to the line connecting the center points of the seventh pulley 7 and the eighth pulley 8 with respect to the central axis.

[0039] The first pulley 1, the second pulley 2, the third pulley 3, the fourth pulley 4, the fifth pulley 5, the sixth pulley 6, the seventh pulley 7 and the eighth pulley 8 function to constrain the trajectory of the steel cable 12.

[0040] The first outer wing check ring 9 and the second outer wing check ring 10 are fixedly connected with the steel cable 12, and can move with the movement of the steel cable 12; at the same time, the first outer wing check ring 9 and the second outer wing check ring 10 are installed on the first outer wing 14 and the second outer wing 16 respectively, and function as the action points for driving the first outer wing 14 and the second outer wing 16, so that the first outer wing 14 and the second outer wing 16 follow the movement of the first outer wing check ring 9 and the second outer wing check ring 10.

[0041] The wing extension principle is as follows:

[0042] The motor 11 rotates counterclockwise to drive the steel cable 12 to move, the first outer wing check ring 9 and the second outer wing check ring 10 are fixed with the steel cable 12 and the first outer wing 14 and the second outer wing 16 at the same time, the steel cable 12 moves according to the fixed track of the pulley, drives the first outer wing check ring 9 and the second outer wing check ring 10 to follow, the outer wing check ring drives the first outer wing 14 and the second outer wing 16 to move towards the direction shown by the M track, the first outer wing check ring 9 and the second outer wing check ring 10 stop at the third pulley 3, the fourth pulley 4, the seventh pulley 7 and the eighth pulley 8 respectively, and the outer wing is extended. The wing extension state is shown in Figure 2 .

[0043] The wing retraction principle is as follows:

[0044] The motor 11 rotates clockwise to drive the steel cable 12 to move, the first outer wing check ring 9 and the second outer wing check ring 10 are fixed with the steel cable 12 and the first outer wing 14 and the second outer wing 16 at the same time, the steel cable 12 moves according to the fixed track of the pulley, drives the first outer wing check ring 9 and the second outer wing check ring 10 to follow, and pulls the first outer wing 14 and the second outer wing 16 to move towards the direction shown by the N track at the same time, the first outer wing check ring 9 and the second outer wing check ring 10 stop at the first pulley 1, the second pulley 2, the fifth pulley 5 and the sixth pulley 6 respectively, and the outer wing is extended. The wing retraction state is shown in Figure 3 .

[0045] Referring to Figure 1 , the effective driving stroke of the mechanism of the embodiment is S.

[0046] As shown in Figure 4 , Figure 5 , the steel cable has deformation adaptability to the change of the wing direction in the flight state as a flexible transmission medium.

[0047] The above only expresses the embodiments of the application, and the description is more specific and detailed, but it cannot be understood as a limitation on the scope of the patent. It should be noted that for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the application, and these all belong to the protection scope of the application. In addition, the parts not described in detail in the application are all conventional technologies.

Claims

1. A folding wing telescopic drive mechanism for a drone, characterized by, The application relates to a rolling guiding assembly, a flexible conveying medium, a first outer wing check ring, a second outer wing check ring and a power device. The rolling guiding assembly comprises four groups of guiding members, the first group of guiding members and the second group of guiding members are arranged on the first inner wing of the unmanned aerial vehicle, the second group of guiding members is located outside the first group of guiding members, the third group of guiding members and the fourth group of guiding members are arranged on the second inner wing of the unmanned aerial vehicle, and the fourth group of guiding members is located outside the third group of guiding members. The flexible conveying medium passes through the four groups of guiding members in sequence and is wound on the power device. The first outer wing check ring and the second outer wing check ring are fixedly connected with the flexible conveying medium, and the first outer wing check ring and the second outer wing check ring are arranged on the first outer wing and the second outer wing respectively. Each group of guiding members comprises two pulleys.

2. The folding wing telescoping drive mechanism for UAVs of claim 1, wherein, The connecting line of the center points of the two pulleys of the first group of guiding members is symmetrical to the connecting line of the center points of the two pulleys of the third group of guiding members relative to the central axis. The connecting line of the center points of the two pulleys of the second group of guiding members is symmetrical to the connecting line of the center points of the two pulleys of the fourth group of guiding members relative to the central axis. The power device is a motor.

3. The folding wing telescoping drive mechanism for UAVs of claim 1, wherein, The flexible conveying medium is a steel cable.

4. The folding wing telescoping drive mechanism for UAVs of claim 1, wherein, The motor is arranged on the machine body.

5. The folding wing telescoping drive mechanism for UAVs of claim 3, wherein, Each group of guiding members further comprises a fixing member for fixing the pulley.

6. The folding wing telescoping drive mechanism for UAVs of claim 2, wherein, The application further relates to a rolling guiding assembly, a flexible conveying medium, a first outer wing check ring, a second outer wing check ring and a power device. The rolling guiding assembly comprises four groups of guiding members, the first group of guiding members and the second group of guiding members are arranged on the first inner wing of the unmanned aerial vehicle, the second group of guiding members is located outside the first group of guiding members, the third group of guiding members and the fourth group of guiding members are arranged on the second inner wing of the unmanned aerial vehicle, and the fourth group of guiding members is located outside the third group of guiding members. The flexible conveying medium passes through the four groups of guiding members in sequence and is wound on the power device. The first outer wing check ring and the second outer wing check ring are fixedly connected with the flexible conveying medium, and the first outer wing check ring and the second outer wing check ring are arranged on the first outer wing and the second outer wing respectively. Each group of guiding members comprises two pulleys. The connecting line of the center points of the two pulleys of the first group of guiding members is symmetrical to the connecting line of the center points of the two pulleys of the third group of guiding members relative to the central axis. The connecting line of the center points of the two pulleys of the second group of guiding members is symmetrical to the connecting line of the center points of the two pulleys of the fourth group of

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