CN212172529U - Angle of attack guiding mechanism of variable angle of attack unmanned aerial vehicle - Google Patents

Abstract

The utility model relates to an unmanned air vehicle technique field, concretely relates to variable attack angle unmanned aerial vehicle's angle of attack guiding mechanism, including cabin, bracing piece, screw mechanism, pivot, angle of attack guiding mechanism includes hinge rod, pull rod, drive unit. The utility model has the advantages that: through the rotation of one rotating shaft, the pull rod pulls the other rotating shaft to synchronously rotate in the same direction, so that the synchronous adjustment of the attack angles of the four propeller mechanisms is realized, and compared with the mode of driving by a pull rope in the prior art, the stability of the propeller mechanisms after the attack angles are adjusted is ensured; the servo motor drives the driving gear and the driven gear to be in meshing transmission to drive the rotating shaft to rotate, so that the rotating stroke adjusting precision of the rotating shaft is high, and the rotating shaft rotates more stably; the locking structure is arranged, the rotating shaft is limited to rotate through the locking structure, and then the stability of the propeller mechanism is improved after the angle of attack is adjusted, so that the flying quality of the unmanned aerial vehicle is improved.

Description

Angle of attack guiding mechanism of variable angle of attack unmanned aerial vehicle

Technical Field

The utility model relates to an unmanned air vehicle technique field, concretely relates to variable angle of attack unmanned aerial vehicle's angle of attack guiding mechanism.

Background

An unmanned aircraft, abbreviated as "drone", and abbreviated in english as "UAV", is an unmanned aircraft that is operated by a radio remote control device and a self-contained program control device, or is operated autonomously, either completely or intermittently, by an onboard computer. Drones tend to be more suitable for tasks that are too "fool, dirty, or dangerous" than are manned aircraft. Unmanned aerial vehicles can be classified into military and civil applications according to the application field. For military use, unmanned aerial vehicles divide into reconnaissance aircraft and target drone. In the civil aspect, the unmanned aerial vehicle + the industry application is really just needed by the unmanned aerial vehicle; at present, the unmanned aerial vehicle is applied to the fields of aerial photography, agriculture, plant protection, miniature self-timer, express transportation, disaster relief, wild animal observation, infectious disease monitoring, surveying and mapping, news reporting, power inspection, disaster relief, film and television shooting, romantic manufacturing and the like, the application of the unmanned aerial vehicle is greatly expanded, and developed countries actively expand industrial application and develop unmanned aerial vehicle technology.

Chinese patent No. cn201521117028.x (grant publication date 20160601) discloses a variable attack angle four-axis unmanned aerial vehicle, the four-axis unmanned aerial vehicle with the variable attack angle comprises a machine body and four groups of propeller mechanisms fixed on the machine body, the propeller mechanism comprises a supporting shaft, a supporting plate, a motor and a propeller, one end of the supporting shaft is rotatably connected to the side wall of the machine body, the other end of the supporting shaft is fixedly connected with a horizontal supporting plate, the supporting plate is provided with a motor, the motor is connected with the propeller, a first rotating mechanism and a second rotating mechanism are arranged in the machine body, the upper surface of the machine body is provided with a first roller and a second roller, the first rotating mechanism, the first roller, the second rotating mechanism and the second roller are sequentially connected through a pull rope, at least part of the pull rope is fixed on the supporting shaft, so that the first rotating mechanism and/or the second rotating mechanism can drive the supporting shaft to rotate. The problem that the existing scheme for changing the attack angle has serious defects and a complex system needs to be installed is solved.

Among the above-mentioned prior art, adopt the stay cord to drive the back shaft (this application is called the bracing piece) and rotate, accomplish the angle of attack adjustment, but because the stay cord is the flexible piece, lead to back shaft atress unstable easily, produce not hard up, influence unmanned aerial vehicle's flight effect.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the problem that exists among the prior art, provide a variable attack angle unmanned aerial vehicle's attack angle guiding mechanism, it can realize solving prior art's problem to a certain extent at least.

In order to realize the technical purpose, the technical effect is achieved, the utility model discloses a realize through following technical scheme:

the utility model provides a variable angle of attack unmanned aerial vehicle's angle of attack guiding mechanism, includes unmanned aerial vehicle's cabin and locates four bracing pieces on the cabin tip, be equipped with screw mechanism on the bracing piece, adjacent two the bracing piece is rotated through installing pivot level jointly and is connected on the cabin, two the pivot is by its synchronous syntropy of angle of attack guiding mechanism drive and is rotated, angle of attack guiding mechanism is located including cup jointing at two epaxial hinge bars of commentaries on classics pivot length direction has the pull rod with two hinge bars of one side articulated jointly, one of them when the pivot rotates, through another pivot of pull rod drive is rotated in step, the pivot is driven its rotation by drive unit.

As a further optimization of the technical scheme, the transmission unit comprises a driven gear sleeved on one of the rotating shafts, a servo motor is installed in the engine room, a driving gear is connected to the servo motor in a driving manner, and the driving gear is meshed with the driven gear.

As a further optimization of the above technical solution, the rotation of the rotation shaft is limited by a stop structure.

As above technical scheme's further optimization, the locking structure is including cup jointing at the epaxial plastic ring of commentaries on classics, the vertical driving element that installs in the cabin, the last drive of driving element is connected with the plastic fixture block, be equipped with the arc wall with plastic ring appearance adaptation on the plastic fixture block, the arc wall on the driving element drive plastic fixture block is contradicted with plastic ring global.

As a further optimization of the above solution, the driving element is an electric push rod.

As a further optimization of the above technical solution, a plurality of ratchet grooves are arranged on the circumferential surface of the plastic ring along the axial direction thereof.

The utility model has the advantages that: the synchronous adjustment of the attack angles of the four propeller mechanisms is realized by rotating one rotating shaft and pulling the other rotating shaft to synchronously rotate in the same direction by the pull rod, and the stability of the propeller mechanisms after the attack angle adjustment is ensured at least to a certain extent compared with the mode of driving by the pull rope in the prior art; in addition, a servo motor is arranged to drive the driving gear and the driven gear to be in meshing transmission to drive the rotating shaft to rotate, so that the rotating stroke adjusting precision of the rotating shaft is high, and the rotating shaft can rotate more stably; the locking structure is arranged, the rotating shaft is limited to rotate through the locking structure, and then the stability of the propeller mechanism is improved after the angle of attack is adjusted, so that the flying quality of the unmanned aerial vehicle is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic partial cross-sectional view of the three-dimensional structure of the present invention;

FIG. 2 is a side view of the three-dimensional structure of FIG. 1;

FIG. 3 is an enlarged view of a portion of the structure at A in FIG. 2;

FIG. 4 is a schematic top view of the perspective structure of FIG. 1;

wherein the reference numerals are as follows:

1-cabin, 2-pull rod, 3-hinge rod, 4-rotating shaft, 5-driven gear, 6-driving gear, 7-servo motor, 8-support rod, 9-propeller mechanism, 10-electric push rod, 11-plastic ring, 12-plastic fixture block and 13-ratchet groove.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention, and obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-4, fig. 1-4 show an angle of attack adjusting mechanism of a variable angle of attack unmanned aerial vehicle, which includes an unmanned aerial vehicle cabin 1 and four support rods 8 disposed on the end of the cabin 1, the support rods 8 are provided with propeller mechanisms 9, two adjacent support rods 8 are horizontally and rotatably connected to the cabin 1 through a commonly installed rotating shaft 4, two rotating shafts 4 are driven by the angle of attack adjusting mechanism to rotate synchronously and in the same direction, the angle of attack adjusting mechanism includes hinge rods 3 sleeved on two rotating shafts 4, two hinge rods 3 located on the same side of the rotating shafts 4 in the length direction are commonly hinged with a pull rod 2, when one rotating shaft 4 rotates, the other rotating shaft 4 is driven by the pull rod 2 to rotate synchronously, the rotating shafts 4 are driven to rotate by a transmission unit, the transmission unit includes a driven gear 5 sleeved on one rotating shaft 4, the engine room is characterized in that a servo motor 7 is installed in the engine room 1, a driving gear 6 is connected to the servo motor 7 in a driving mode, and the driving gear 6 is meshed with the driven gear 5.

The rotation of pivot 4 is restricted by the locking structure, the locking structure is including cup jointing at pivot 4 on plastic ring 11, vertically install electric putter 10 in cabin 1, the drive is connected with plastic fixture block 12 on the electric putter 10, be equipped with the arc wall with plastic ring 11 appearance adaptation on the plastic fixture block 12, the arc wall on the electric putter 10 drive plastic fixture block 12 is peripheral to be contradicted with plastic ring 11, plastic ring 11 is peripheral to be equipped with a plurality of thorn grooves 13 along its axial array.

The utility model discloses when using: the ground console sends an attack angle adjusting command to a control module of the unmanned aerial vehicle, the control module controls a servo motor to be electrified and rotated, the servo motor is rotated to drive a driving gear and a driven gear to be in meshing transmission, thereby driving a rotating shaft to rotate, enabling the hinge rods to swing when the rotating shaft rotates, and pulling the other hinge rod to synchronously swing in the same direction by the pull rod, thereby driving the other rotating shaft to synchronously rotate in the same direction, realizing the synchronous adjustment of the attack angles of the four propeller mechanisms, the control module starts the electric push rod, the telescopic rod of the electric push rod extends to drive the plastic fixture block to move upwards, the arc-shaped groove on the plastic clamping block is pressed against the circumferential surface of the plastic ring, and through the frictional resistance between the inner wall of the arc-shaped groove and the circumferential surface of the plastic ring, the rotation of the rotating shaft is limited, and meanwhile, the driving gear and the driven gear are meshed, so that the rotation of the rotating shaft is limited.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims (6)

1. An attack angle adjusting mechanism of an unmanned aerial vehicle with a variable attack angle comprises an unmanned aerial vehicle cabin (1) and four support rods (8) arranged at the end part of the cabin (1), wherein a propeller mechanism (9) is arranged on each support rod (8), it is characterized in that two adjacent support rods (8) are horizontally and rotatably connected to the engine room (1) through a commonly-installed rotating shaft (4), the two rotating shafts (4) are driven by an attack angle adjusting mechanism to synchronously rotate in the same direction, the incidence angle adjusting mechanism comprises hinge rods (3) sleeved on two rotating shafts (4), two hinge rods (3) positioned on the same side of the rotating shafts (4) in the length direction are hinged with a pull rod (2) together, when one of the rotating shafts (4) rotates, the other rotating shaft (4) is driven to synchronously rotate through the pull rod (2), and the rotating shaft (4) is driven to rotate by the transmission unit.

2. The attack angle adjusting mechanism of the unmanned aerial vehicle with the variable attack angle according to claim 1, wherein the transmission unit comprises a driven gear (5) sleeved on one of the rotating shafts (4), a servo motor (7) is installed in the nacelle (1), a driving gear (6) is connected to the servo motor (7) in a driving manner, and the driving gear (6) is meshed with the driven gear (5).

3. The angle of attack adjustment mechanism of a variable angle of attack unmanned aerial vehicle of claim 1, characterized in that the rotation shaft (4) is limited in its rotation by a stop structure.

4. The attack angle adjusting mechanism of the unmanned aerial vehicle with the variable attack angle according to claim 3, wherein the locking structure comprises a plastic ring (11) sleeved on the rotating shaft (4), a driving element is vertically installed in the cabin (1), a plastic clamping block (12) is connected to the driving element in a driving manner, an arc-shaped groove matched with the shape of the plastic ring (11) is formed in the plastic clamping block (12), and the driving element drives the arc-shaped groove in the plastic clamping block (12) to abut against the circumferential surface of the plastic ring (11).

5. The angle of attack adjustment mechanism of a variable angle of attack unmanned aerial vehicle of claim 4, wherein the driving element is an electric push rod (10).

6. The angle of attack adjustment mechanism of a variable angle of attack unmanned aerial vehicle according to claim 4, wherein the circumferential surface of the plastic ring (11) is provided with a plurality of ratchet grooves (13) along the axial direction thereof.

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