阅读说明：本技术 一种智能高效电动恒速变距螺旋桨系统 (Intelligent efficient electric constant-speed variable-pitch propeller system ) 是由 夏青元 廖辉 张金鑫 周雷 于 2021-09-10 设计创作，主要内容包括：本发明涉及无人机技术领域,公开了一种智能高效电动恒速变距螺旋桨系统,包括无刷电机和电机固定座,所述无刷电机与电机固定座的一侧固定连接,所述无刷电机的中心轴为中空结构,且穿设有变距杆,所述变距杆的两端分别设置有变距三桨叶部件和变距杆驱动组件。本发明可以在不同飞行速度情况下自动调节桨叶角功能,保证螺旋桨始终处于最高效率状态运行,提高经济性,提高传统无人机螺旋桨效率,降低电动恒速变距螺旋桨技术门槛,使得中小型无人机同样可以搭载高效经济的电动恒速变距螺旋桨系统,提高整体飞行性能。(The invention relates to the technical field of unmanned aerial vehicles, and discloses an intelligent efficient electric constant-speed variable-pitch propeller system which comprises a brushless motor and a motor fixing seat, wherein the brushless motor is fixedly connected with one side of the motor fixing seat, a central shaft of the brushless motor is of a hollow structure, a variable-pitch rod penetrates through the central shaft, and two ends of the variable-pitch rod are respectively provided with a variable-pitch tri-blade component and a variable-pitch rod driving component. The invention can automatically adjust the blade angle under the condition of different flight speeds, ensures that the propeller always runs in the highest efficiency state, improves the economy, improves the propeller efficiency of the traditional unmanned aerial vehicle, reduces the technical threshold of the electric constant-speed variable-pitch propeller, ensures that a small and medium-sized unmanned aerial vehicle can carry an efficient and economical electric constant-speed variable-pitch propeller system and improves the overall flight performance.)

1. The utility model provides an intelligence high-efficient electronic constant speed variable pitch propeller system, includes brushless motor (2) and motor fixing base (4), its characterized in that: brushless motor (2) and one side fixed connection of motor fixing base (4), the center pin of brushless motor (2) is hollow structure, and wears to be equipped with displacement pole (3), the both ends of displacement pole (3) are provided with displacement three paddle parts and displacement pole drive assembly respectively.

2. The intelligent high-efficiency electric constant-speed variable-pitch propeller system according to claim 1, wherein: the variable-pitch three-blade component comprises three propeller blades (14), a shell (1), three copper sleeves (20), three variable-pitch rocker arms (17), three variable-pitch disc limiting shafts (18), a variable-pitch disc (16) and three variable-pitch rocker arm limiting grooves (19), wherein the bottom side of the shell (1) is fixedly connected with an upper cover of a brushless motor (2), the roots of the propeller blades (14) movably penetrate through the shell (1) from the outer side of the shell (1) and are fixedly penetrated through the corresponding copper sleeves (20) and the variable-pitch rocker arms (17), the three variable-pitch rocker arm limiting grooves (19) are respectively formed in three ends of the outer side of the variable-pitch disc (16), one end of each variable-pitch rocker arm (17) is inserted into the corresponding variable-pitch rocker arm limiting groove (19), and the three variable-pitch disc limiting shafts (18) vertically and movably penetrate through the three ends of the outer side of the variable-pitch disc (16) respectively, and one end of each of the three distance-changing disc limiting shafts (18) is fixedly connected with the lower side of the inside of the shell (1), and one end of each distance-changing rod (3) movably penetrates through the shell (1) and is fixedly connected with the bottom side of the distance-changing disc (16).

3. The intelligent high-efficiency electric constant-speed variable-pitch propeller system according to claim 2, wherein: the outer side of the copper sleeve (20) is movably connected with the shell (1) through a bearing.

4. The intelligent high-efficiency electric constant-speed variable-pitch propeller system according to claim 1 or 2, wherein: the variable-pitch rod driving assembly comprises a steering engine ball-end pull rod (6), a steering engine rocker arm (7), a variable-pitch steering engine (8), a variable-pitch steering engine mounting seat (9), a variable-pitch sliding block mounting seat (15) and a variable-pitch sliding block (11), one end of the steering engine ball-end pull rod (6) is connected with the steering engine rocker arm (7), the other end of the steering engine ball-end pull rod is rotatably connected with the variable-pitch sliding block mounting seat (15) through a rotating shaft, two ends of the variable-pitch sliding block (11) are rotatably connected with two sides of the variable-pitch sliding block mounting seat (15) through bearings, the steering engine rocker arm (7) is in gear meshing transmission with the variable-pitch steering engine (8), the variable-pitch steering engine (8) is fixed on the variable-pitch steering engine mounting seat (9), the variable-pitch sliding block mounting seat (9) is fixed on a motor fixing seat (4), one end, far away from a variable-pitch three-blade component, of the variable-pitch rod (3), penetrates through the motor fixing seat (4) and is fixedly connected with the variable-pitch sliding block (11), the variable-pitch sliding block (11) is used for changing the circular motion of the variable-pitch steering engine (8) into the up-and-down piston motion of the variable-pitch rod (3) to realize variable-pitch transmission.

5. The intelligent high-efficiency electric constant-speed variable-pitch propeller system according to claim 4, wherein: still include brushless electricity accent (5) and program control module (10), brushless electricity accent (5) and program control module (10) fixed mounting are on motor fixing base (4), and brushless electricity accent (5) is motor drive controller, and program control module (10) are used for controlling displacement and motor speed, according to flight controller input signal, through the automatic displacement procedure, realize that rotational speed and screw pitch automatic adjustment match in order to keep the operation of maximum efficiency state.

6. The intelligent high-efficiency electric constant-speed variable-pitch propeller system according to claim 1, wherein: the three-blade variable-pitch sealing device is characterized by further comprising a three-blade component upper cover (12), wherein the three-blade component upper cover (12) is fixedly arranged on the top side of the shell (1) and used for sealing the three-blade variable-pitch component.

7. The intelligent high-efficiency electric constant-speed variable-pitch propeller system according to claim 6, wherein: the three-blade-component wind power generator further comprises a blade cover (13), wherein the blade cover (13) is fixed on the upper cover (12) of the three-blade component through screws and used for reducing starting resistance and rectifying.

Technical Field

The invention relates to the technical field of unmanned aerial vehicles, in particular to an intelligent efficient electric constant-speed variable-pitch propeller system.

Background

With the rapid development of unmanned aerial vehicle technology, it is being applied in more and more fields. The unmanned aerial vehicle mainly adopts a scheme that a motor or an engine drives a fixed-distance propeller to pull forward or push backward, and the fixed-distance propeller can only have higher efficiency in a limited speed range because the propeller is suitable for a low-speed blade installation angle and is difficult to adapt to a high speed; the fixed-pitch propeller has low economy, partial power loss exists outside a specific condition interval, and the cost of the air route is higher; the fixed-pitch propeller has general performance, can only run under a set working condition, and has long takeoff distance, slow climbing and long landing and running distance. Therefore, the whole flight performance of the unmanned aerial vehicle can be improved by the automatic variable pitch propeller system.

At present, the number of the constant-speed variable-pitch propeller products of the matched unmanned aerial vehicle on the market is small, the constant-speed variable-pitch propeller products of the unmanned aerial vehicle suitable for taking off the weight of dozens of kilograms to hundreds of kilograms are almost in the blank of the market, and how to solve the problems is a technical problem to be solved urgently by technical personnel in the field.

Disclosure of Invention

The invention aims to provide an intelligent high-efficiency electric constant-speed variable-pitch propeller system, which solves the problems in the background art.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an intelligent high-efficient electronic constant speed variable pitch propeller system, includes brushless motor and motor fixing base, one side fixed connection of brushless motor and motor fixing base, brushless motor's center pin is hollow structure, and wears to be equipped with the variable pitch pole, the both ends of variable pitch pole are provided with three paddle parts of variable pitch and variable pitch pole drive assembly respectively.

As a preferred embodiment of the invention, the variable-pitch three-blade part comprises three propeller blades, a shell, three copper sleeves, three variable-pitch rocker arms, three variable-pitch disc limiting shafts, a variable-pitch disc and three variable-pitch rocker arm limiting grooves, the bottom side of the shell is fixedly connected with the upper cover of the brushless motor, the root part of the propeller blade movably penetrates into the shell from the outer side of the shell, and fixedly penetrates through the corresponding copper bush and the pitch-variable rocker arm, three pitch-variable rocker arm limiting grooves are respectively arranged at three ends of the outer side of the pitch-variable disc, one end of the variable-pitch rocker arm is inserted into the corresponding variable-pitch rocker arm limiting groove, three variable-pitch disc limiting shafts respectively vertically and movably penetrate through the three ends of the outer side of the variable-pitch disc, and one end of each variable-pitch disc limiting shaft is fixedly connected with the lower side inside the shell, and one end of each variable-pitch rod movably penetrates through the shell and is fixedly connected with the bottom side of each variable-pitch disc.

In a preferred embodiment of the present invention, the outer side of the copper sleeve is movably connected to the housing through a bearing.

As a preferred embodiment of the invention, the pitch-variable rod driving component comprises a steering engine ball pull rod, a steering engine rocker arm, a pitch-variable steering engine mounting seat, a pitch-variable sliding block mounting seat and a pitch-variable sliding block, one end of the steering engine ball head pull rod is connected with a steering engine rocker arm, the other end of the steering engine ball head pull rod is rotatably connected with the variable-pitch sliding block mounting seat through a rotating shaft, both ends of the variable-pitch sliding block are rotatably connected with both sides of the variable-pitch sliding block mounting seat through bearings, the steering engine rocker arm is in meshing transmission with the variable-pitch steering engine gear, the variable-pitch steering engine is fixed on a variable-pitch steering engine mounting seat which is fixed on a motor fixing seat, one end of the pitch-variable rod, which is far away from the pitch-variable three-blade component, penetrates through the motor fixing seat to be fixedly connected with the pitch-variable sliding block, and the pitch-variable sliding block is used for changing the circular motion of the pitch-variable steering engine into the up-and-down piston motion of the pitch-variable rod, so that pitch-variable transmission is realized.

As a preferred embodiment of the present invention, the present invention further comprises a brushless electric motor and program control module, the brushless electric motor and program control module is fixedly installed on the motor fixing base, the brushless electric motor is a motor driving controller, the program control module is used for controlling the variable pitch and the motor rotation speed, and the rotation speed and the propeller pitch are automatically adjusted and matched to keep the maximum efficiency state to operate through an automatic variable pitch program according to the input signal of the flight controller.

The three-blade variable-pitch component is characterized by further comprising a three-blade component upper cover, wherein the three-blade component upper cover is fixedly arranged on the top side of the shell and used for sealing the three-blade variable-pitch component.

The three-blade component comprises a blade cover, wherein the blade cover is fixed on the upper cover of the three-blade component through screws and used for reducing starting resistance and rectifying.

Compared with the prior art, the invention provides an intelligent high-efficiency electric constant-speed variable-pitch propeller system, which has the following beneficial effects:

according to the invention, the blades can generate negative blade angles through the variable-pitch three-blade part and the variable-pitch rod driving assembly, the unmanned aerial vehicle landing deceleration section has a negative blade pitch reverse thrust deceleration function, the sliding distance is reduced, the maximum output of the power of an engine is ensured when necessary, the takeoff acceleration distance of the unmanned aerial vehicle is reduced, and the climbing rate is improved;

the invention is used in cooperation with a program, can automatically adjust the blade angle function under the condition of different flight speeds, ensures that the propeller always runs in the highest efficiency state, improves the economy, improves the propeller efficiency of the traditional unmanned aerial vehicle, reduces the technical threshold of the electric constant-speed variable-pitch propeller, ensures that a small and medium-sized unmanned aerial vehicle can carry an efficient and economical electric constant-speed variable-pitch propeller system and improves the overall flight performance;

the integrated propeller, the variable pitch mechanism and the motor are integrated, the integration level is high, the system can be operated and used by installing the system, and other accessories and complicated debugging steps are not needed;

the invention adopts a modular design, can select propellers, power motors and variable pitch mechanisms with different sizes according to the types of specific airplanes, and has wide application range and convenient maintenance.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic overall view of an intelligent, high-efficiency, electric, constant-speed, variable-pitch propeller system of the present invention;

FIG. 2 is an exploded schematic view of an intelligent high efficiency electric constant speed variable pitch propeller system of the present invention;

FIG. 3 is an enlarged schematic view of a pitch-variable steering engine mounting seat of the intelligent high-efficiency electric constant-speed pitch-variable propeller system of the present invention;

FIG. 4 is a schematic view of the root of a propeller blade of an intelligent, high-efficiency, electrically-powered, constant-speed, variable-pitch propeller system of the present invention;

fig. 5 is an enlarged schematic view of fig. 4A of an intelligent high-efficiency electric constant-speed variable-pitch propeller system according to the present invention.

In the figure: 1. a housing; 2. a brushless motor; 3. a pitch-variable rod; 4. a motor fixing seat; 5. brushless electric regulation; 6. a steering engine ball pull rod; 7. a steering engine rocker arm; 8. a variable-pitch steering engine; 9. a variable-pitch steering engine mounting seat; 10. a program control module; 11. a variable-pitch slider; 12. the three-blade component upper cover; 13. a paddle housing; 14. a propeller blade; 15. a variable-pitch slider mounting seat; 16. a variable pitch disc; 17. a pitch-variable rocker arm; 18. a distance-variable disc limiting shaft; 19. a variable-pitch rocker arm limiting groove; 20. and (4) a copper sleeve.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly, e.g., as meaning fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed; the type of the electrical appliance provided by the invention is only used for reference. For those skilled in the art, different types of electrical appliances with the same function can be replaced according to actual use conditions, and for those skilled in the art, the specific meaning of the above terms in the present invention can be understood in specific situations.

Referring to fig. 1-5, the present invention provides a technical solution: the utility model provides a high-efficient electronic constant speed variable pitch propeller system of intelligence, includes brushless motor 2 and motor fixing base 4, brushless motor 2 passes through one side fixed connection of screw and motor fixing base 4, brushless motor 2's center pin is hollow structure, and wears to be equipped with variable pitch pole 3, the both ends of variable pitch pole 3 are provided with variable pitch three-blade part and variable pitch pole drive assembly respectively.

In this embodiment, the variable-pitch three-blade component includes three propeller blades 14, a housing 1, three copper sleeves 20, three variable-pitch rockers 17, three variable-pitch disc limiting shafts 18, a variable-pitch disc 16 and three variable-pitch rocker limiting grooves 19, the bottom side of the housing 1 is fixedly connected with an upper cover of the brushless motor 2 through screws, the roots of the propeller blades 14 movably penetrate through the housing 1 from the outer side to the inside of the housing 1 and fixedly penetrate through the corresponding copper sleeves 20 and the variable-pitch rockers 17 through screws, the three variable-pitch rocker limiting grooves 19 are respectively formed at three ends of the outer side of the variable-pitch disc 16, one ends of the variable-pitch rockers 17 are inserted into the corresponding variable-pitch rocker limiting grooves 19, the three variable-pitch disc limiting shafts 18 respectively vertically movably penetrate through three ends of the outer side of the variable-pitch disc 16, and one ends of the three variable-pitch disc limiting shafts 18 are all fixedly connected with the inner lower side of the housing 1, one end of the pitch-variable rod 3 movably penetrates through the shell 1 and is fixedly connected with the bottom side of the pitch-variable disk 16, when the pitch-variable rod 3 is driven by the pitch-variable rod driving assembly to move upwards, the pitch-variable disk 16 also moves upwards, and a structure on the pitch-variable rocker limiting groove 19 drives the pitch-variable rocker 17 to rotate, so that linear motion is converted into circular motion, and the blade angle of the propeller blades 14 is gradually reduced; conversely, when the pitch-variable rod 3 moves downward, the blade angle of the propeller blades 14 gradually increases.

In this embodiment, the outer side of the copper bush 20 is movably connected with the housing 1 through a bearing.

In the embodiment, the pitch-variable rod driving component comprises a steering engine ball-head pull rod 6, a steering engine rocker arm 7, a pitch-variable steering engine 8, a pitch-variable steering engine mounting seat 9, a pitch-variable slider mounting seat 15 and a pitch-variable slider 11, one end of the steering engine ball-head pull rod 6 is connected with the steering engine rocker arm 7, the other end of the steering engine ball-head pull rod is rotatably connected with the pitch-variable slider mounting seat 15 through a rotating shaft, two ends of the pitch-variable slider 11 are rotatably connected with two sides of the pitch-variable slider mounting seat 15 through bearings, the steering engine rocker arm 7 is in gear meshing transmission with the pitch-variable steering engine 8, the pitch-variable steering engine 8 is fixed on the pitch-variable steering engine mounting seat 9, the pitch-variable steering engine mounting seat 9 is fixed on a motor fixing seat 4, one end of the pitch-variable rod 3, which is far away from three pitch-variable blade components, penetrates through the motor fixing seat 4 and is fixedly connected with the pitch-variable slider 11, the pitch-variable slider 11 is used for changing the circular motion of the pitch-variable steering engine 8 into the up-down piston motion of the pitch-variable rod 3, the variable pitch transmission is realized.

In this embodiment, still include brushless electricity accent 5 and program control module 10, brushless electricity accent 5 and program control module 10 pass through screw fixed mounting on motor fixing base 4, and brushless electricity accent 5 is motor drive controller, and program control module 10 is used for controlling variable pitch and motor speed, according to flight controller input signal, through the automatic variable pitch program, realizes that rotational speed and screw pitch automatic adjustment match in order to keep the operation of maximum efficiency state.

In this embodiment, the three-blade pitch-variable component sealing device further comprises a three-blade component upper cover 12, wherein the three-blade component upper cover 12 is fixedly installed on the top side of the shell 1 and used for sealing the three-blade pitch-variable component.

In this embodiment, the three-blade component comprises a blade cover 13, wherein the blade cover 13 is fixed on the three-blade component upper cover 12 through screws and used for reducing starting resistance and rectifying.

The working principle is as follows: the pitch-variable steering engine 8 is in gear engagement with a transmission steering engine rocker arm 7, the steering engine rocker arm 7 transmits a pitch-variable slider mounting seat 15, so that a pitch-variable slider 11 drives a pitch-variable rod 3 to move up and down through a piston, when the pitch-variable rod 3 moves upwards under the transmission of the pitch-variable steering engine 8, a pitch-variable disk 16 also moves upwards along with the pitch-variable rod, and a structure-a pitch-variable rocker arm limiting groove 19 on the pitch-variable rod drives a pitch-variable rocker arm 17 to rotate, so that linear motion is converted into circular motion, and the blade angle of a propeller blade 14 is gradually reduced; conversely, when the pitch-variable rod 3 moves downward, the blade angle of the propeller blades 14 gradually increases.

While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of 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. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.