CN218967212U

CN218967212U - Coaxial double-oar unmanned aerial vehicle driver based on multiaspect air gap axial magnetic flux motor structure

Info

Publication number: CN218967212U
Application number: CN202223417775.8U
Authority: CN
Inventors: 陈泉杉; 陈文会; 邢昊玮; 陈颖诗; 李泽浩
Original assignee: Beijing Institute of Technology Zhuhai
Current assignee: Beijing Institute of Technology Zhuhai
Priority date: 2022-12-20
Filing date: 2022-12-20
Publication date: 2023-05-05
Anticipated expiration: 2032-12-20

Abstract

The utility model discloses a coaxial double-propeller unmanned aerial vehicle driver based on a multiaspect air gap axial flux motor structure, and particularly relates to the technical field of coaxial double-propeller driving of a small unmanned aerial vehicle. The utility model fundamentally changes the design thought of the whole structure and the transmission structure of the prime motor, realizes the great simplification of the accessory transmission mechanism of the coaxial double-oar, provides a new design scheme for the electric coaxial double-oar driver, has smaller volume and more compact structure, solves the problems of large volume and mass and complex transmission mechanism of the coaxial double-oar device driven by the traditional radial magnetic flux motor structure, and meets the application requirement of the small unmanned aerial vehicle.

Description

Coaxial double-oar unmanned aerial vehicle driver based on multiaspect air gap axial magnetic flux motor structure

Technical Field

The utility model relates to the technical field of coaxial double-propeller driving of small unmanned aerial vehicles, in particular to a coaxial double-propeller unmanned aerial vehicle driver based on a multi-surface air gap axial flux motor structure.

Background

The coaxial double-propeller is used as an advanced propeller propulsion mode, unbalanced moment caused by rotation of a rotor wing can be well counteracted, the overall lift force of the rotor wing can be greatly improved under the condition of smaller overall volume structure, the coaxial double-propeller is generally applied to the overall design of some transport helicopters or turbine propeller engines, the structure is relatively compact, the volume and the weight are small, and the coaxial double-propeller is also suitable for small unmanned aerial vehicles driven by motors; the motor is used as a prime motor of the small unmanned aerial vehicle and is a core device for ensuring the flight performance of the aircraft, the radial flux motor is widely adopted by various small unmanned aerial vehicles at present, two or more radial flux motors are generally required to be combined to realize a coaxial double-paddle structure, and very complex mechanical transmission devices are required to be matched with each other, so that on one hand, the manufacturing cost is greatly increased, the whole structure is difficult to compact, and the whole volume and weight are further increased.

Therefore, in combination with the related technical requirements and known problems of the coaxial double-oar and the special structural characteristics of compact structure, axial transmission and the like of the axial flux motor, the design thought of the coaxial double-oar rotor driver adopting the axial flux motor as a prime motor is provided.

Disclosure of Invention

In order to overcome the defects in the prior art, the embodiment of the utility model provides the coaxial double-oar unmanned aerial vehicle driver based on the multi-face air gap axial magnetic flux motor structure, the design thought of the whole structure and the transmission structure of the prime motor is fundamentally changed, the great simplification of the accessory transmission mechanism of the coaxial double-oar is realized, a new design scheme is provided for the electric coaxial double-oar driver, the volume is smaller, the structure is more compact, the problems of large volume and mass of the coaxial double-oar device driven by the traditional radial magnetic flux motor structure and complex transmission mechanism are solved, and the application requirements of a small unmanned aerial vehicle are more met, so that the problems in the background technology are solved.

In order to achieve the above purpose, the present utility model provides the following technical solutions: coaxial double-oar unmanned aerial vehicle driver based on multiaspect air gap axial flux motor structure, which comprises a transmission shaft, the top fixedly connected with top cap of transmission shaft, the outer wall cover of transmission shaft is equipped with the fixing base, the outer wall fixedly connected with one-level screw of fixing base, the outer wall cover of transmission shaft is equipped with the control sloping cam plate, and the control sloping cam plate sets up the bottom at the fixing base, the outer wall fixedly connected with first joint seat of control sloping cam plate, the outer wall of first joint seat articulates there is first articulated rod, and the one end of first articulated rod articulates the outer wall at the fixing base, the outer wall fixedly connected with second joint seat of control sloping cam plate, the outer wall of second joint seat articulates there is the second articulated rod, the bottom of control sloping cam plate is equipped with the holding ring, the outside fixedly connected with controller of holding ring, and the one end of second articulated rod articulates the outer wall at the controller, the bottom of holding ring is equipped with the fixed disk, and the fixed disk cover is established at the outer wall of transmission shaft, the inside joint of fixed disk has the bearing.

In a preferred embodiment, the number of the primary propellers and the secondary propellers is two, and the two primary propellers and the secondary propellers are arranged in a one hundred eighty degree opposite state.

In a preferred embodiment, the outer wall fixedly connected with second grade screw of fixed disk, the inside of fixed disk is equipped with the fixed pinhole, and the fixed pinhole cover is established at the outer wall of transmission shaft, the lubricating oil cooling tank has been seted up to the inside of fixed disk, the bottom of fixed disk is equipped with transmission rotor axial magnet fixed disk, the inside joint of transmission rotor axial magnet fixed disk has rubidium iron peng permanent magnet, fixedly connected with fixed stay between fixed disk and the transmission rotor axial magnet fixed disk.

In a preferred embodiment, the outer wall of the axial magnet fixing disc of the transmission rotor is wrapped with a hollow stator disc, a first armature winding is clamped in the hollow stator disc, a first stator fixing screw hole is formed in the hollow stator disc, a frame identical to the hollow stator disc body is arranged at the bottom of the hollow stator disc, an axial stator disc is arranged in the frame, a second armature winding is clamped in the axial stator disc, the second armature winding corresponds to the hollow stator disc in the frame, and a second stator fixing screw hole is formed in the axial stator disc.

In a preferred embodiment, the first armature winding and the second armature winding are formed in a star connection in a stator arrangement.

In a preferred embodiment, the first stator fixing screw hole and the second stator fixing screw hole are internally threaded with bolts, and the bolts penetrate through the inside of the transmission rotor axial magnet fixing disc and extend to the top of the transmission rotor axial magnet fixing disc to be connected with the hollow stator disc at the top of the transmission rotor axial magnet fixing disc.

The utility model has the technical effects and advantages that:

1. the utility model adopts a magnetic circuit air gap design of a double-transmission rotor axial magnet fixing disc, a plurality of hollow stator discs and an axial stator disc, wherein two control swash plates at the bottom of the fixing disc are respectively connected with rotor structures at upper and lower two different positions of a transmission shaft;

2. when the motor is electrified to work, the two axial stator disc parts rotate reversely, so that the coaxial primary propeller driving of the driver is realized, the horizontal angle of the primary propeller is adjusted by the controller positioned on the main shaft to change the attack angle of the blade, so that lift force control is realized.

Drawings

Fig. 1 is a front view of the present utility model.

Fig. 2 is a partial sectional view of the fixing plate of the present utility model.

Fig. 3 is a schematic cross-sectional view of a holding pan of the present utility model.

Fig. 4 is an assembled schematic view of the hollow stator disk of the present utility model.

Fig. 5 is a top view of the holding pan of the present utility model.

Fig. 6 is a bottom view of the holding pan of the present utility model.

Fig. 7 is a schematic structural view of the axial magnet fixing disc of the driving rotor of the present utility model.

Fig. 8 is a schematic structural view of the hollow stator plate of the present utility model.

Fig. 9 is a schematic structural view of an axial stator disc of the present utility model.

The reference numerals are: the motor comprises a transmission shaft (1), a top cover (2), a fixed seat (3), a primary propeller (4), a control swash plate (5), a first connecting seat (6), a first connecting rod (7), a second connecting seat (8), a second connecting rod (9), a second connecting rod (10), a supporting ring (11), a controller (12), a fixed disc (13), a secondary propeller (14), a fixed pin hole (15), an lubricating oil cooling groove (16), a transmission rotor axial magnet fixed disc (17), a rubidium iron Peng permanent magnet (18) fixed support, a hollow stator disc (19), a first armature winding (20), a first stator fixed screw hole (21), an axial stator disc (22), a second armature winding (23), a fixed center shaft (24), a second stator fixed screw hole (26) a bolt (27) and a bearing.

Detailed Description

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

Referring to the accompanying drawings of 1-6 in the specification, the coaxial double-propeller unmanned aerial vehicle driver based on a multi-face air gap axial flux motor structure in an embodiment of the utility model comprises a transmission shaft 1, wherein the top of the transmission shaft 1 is fixedly connected with a top cover 2, the outer wall of the transmission shaft 1 is sleeved with a fixed seat 3, the outer wall of the fixed seat 3 is fixedly connected with primary propellers 4, the number of the primary propellers 4 and the secondary propellers 13 is two groups, the two groups of primary propellers 4 and the secondary propellers 13 are arranged in a one hundred eighty degree opposite state, the outer wall of the transmission shaft 1 is sleeved with a control swash plate 5, the control swash plate 5 is arranged at the bottom of the fixed seat 3, the outer wall of the control swash plate 5 is fixedly connected with a first connecting seat 6, the outer wall of the first connecting seat 6 is hinged with a first hinging rod 7, one end of the first hinging rod 7 is hinged with the outer wall of the fixed seat 3, the outer wall of the control swash plate 5 is fixedly connected with a second connecting seat 8, the outer wall of the second connecting seat 8 is hinged with a second hinging rod 9, the bottom of the control swash plate 5 is provided with a supporting ring 10, the supporting ring 10 is sleeved on the outer wall of the transmission shaft 1, the outside of the supporting ring 10 is fixedly connected with a controller 11, one end of the second hinging rod 9 is hinged on the outer wall of the controller 11, the bottom of the supporting ring 10 is provided with a fixed disc 12, the fixed disc 12 is sleeved on the outer wall of the transmission shaft 1, the inside of the fixed disc 12 is clamped with a bearing 27, the outer wall of the fixed disc 12 is fixedly connected with a secondary propeller 13, the inside of the fixed disc 12 is provided with a fixed pin hole 14, the fixed pin hole 14 is sleeved on the outer wall of the transmission shaft 1, the inside of the fixed disc 12 is provided with an lubricating oil cooling groove 15, the magnetic circuit structure of a transmission rotor axial magnet fixed disc 16 is the same as that of an axial stator disc 22, and the axial flux motor is more suitable for direct driving occasions, according to the design, the transmission rotor axial magnet fixing disc 16 is directly combined with the monopole secondary propeller 13, the transmission rotor axial magnet fixing disc 16 is fixed on the structure of the transmission shaft 1 through the fixing pin hole 14, a part of fixing rods axially extend out of the center position to be used for fixing the position of the monopole secondary propeller 13, the transmission rotor axial magnet fixing disc 16 can rotate independently of the structure of the transmission shaft 1 during operation, and the single-stage secondary propeller 13 is driven to generate lifting force under the condition that the integral structure is not influenced;

referring to fig. 3-9 of the specification, a transmission rotor axial magnet fixing disc 16 is arranged at the bottom of a fixing disc 12, a rubidium iron peng permanent magnet 17 is clamped in the transmission rotor axial magnet fixing disc 16, a fixing support column 18 is fixedly connected between the fixing disc 12 and the transmission rotor axial magnet fixing disc 16, a hollow stator disc 19 is wrapped on the outer wall of the transmission rotor axial magnet fixing disc 16, a first armature winding 20 is clamped in the hollow stator disc 19, a first stator fixing screw hole 21 is formed in the hollow stator disc 19, a frame identical to the body of the hollow stator disc 19 is arranged at the bottom of the hollow stator disc 19, and in order to ensure that the hollow stator disc 19 and the transmission shaft 1 rotate in opposite directions and can directly drive a first-stage propeller 4 under the condition that the installation of the other hollow stator discs 19 is not influenced, at this moment, hollow design is required for the stator structure responsible for driving the hollow stator disc 19, and outer end fixing is carried out through the outer end fixing through the peripheral first stator fixing screw hole 21, namely the transmission rotor axial magnet fixing disc 16 can be ensured to directly drive the lifting force of the first-stage propeller 4 under the condition that the whole structure is not influenced;

referring to fig. 4-9 of the specification, an axial stator disc 22 is arranged in the frame, a second armature winding 23 is clamped in the axial stator disc 22, the second armature winding 23 corresponds to a hollow stator disc 19 in the frame, a first armature winding 20 and the second armature winding 23 are formed by adopting a mode of 12-stator arrangement star connection, a second stator fixing screw hole 25 is arranged in the axial stator disc 22, bolts 26 are connected with the inner threads of the first stator fixing screw hole 21 and the second stator fixing screw hole 25, the bolts 26 extend to the top of the axial magnet fixing disc 16 of the transmission rotor through the inner part of the axial magnet fixing disc 16 of the transmission rotor, are connected with the hollow stator disc 19 at the top of the axial magnet fixing disc 16 of the transmission rotor, and in order to realize axial multi-surface air gap arrangement, a mode of mirror image arrangement of two pairs of axial stator discs 22 is adopted, wherein the second armature winding 23 points to the hollow stator disc 19 on the axial stator disc 22, a mode of 12-level stator arrangement star connection is adopted, three-phase end wires are led out of each stator disc, and then the three-phase end wires are uniformly connected in parallel to a control speed regulator for brushless and non-inductive driving, so that the two axial stator discs 22 are forced to rotate.

Working principle: the multi-face air gap structure is a motor structure design which adopts a plurality of axial stator plates 22 and a plurality of hollow stator plates 19 to axially penetrate, the design adopts a double-transmission rotor axial magnet fixing plate 16 and a magnetic circuit air gap design of a plurality of hollow stator plates 19 and the axial stator plates 22, two control swash plates 5 at the bottom of the fixing plate 12 are respectively connected with rotor structures at two different positions above and below a transmission shaft 1, a transmission rotor axial magnet fixing plate 16 above the transmission shaft 1 is fixed on the transmission shaft 1 through a fixing center shaft 24, a plurality of fixing rods extend upwards inside the transmission rotor axial magnet fixing plate 16 to directly install a secondary propeller 13 in cooperation with the structural design of the hollow stator plates 19, and the axial stator plates 22 below the transmission shaft 1 are directly connected with the transmission shaft 1 through the fixing center shaft 24 to drive the whole structure of the transmission shaft 1 to rotate;

when the motor is electrified to work, the two axial stator plates 22 are partially rotated reversely, so that the coaxial primary propeller 4 of the driver is driven, the horizontal angle of the primary propeller 4 is adjusted by the controller 11 positioned on the main shaft to change the attack angle of the blade to realize lift force control, the mode of adopting the motor driving of the axial multi-surface air gap structure is not required to be matched and controlled by adopting a complex mechanical mechanism, and the two hollow stator plates 19 can reversely rotate at the same speed only by changing the sequence of the rotor magnetic circuits in the axial motor, so that the complex mechanical transmission mechanism is not required to be matched with the double primary propeller 4 to rotate, the service life problem caused by mechanical abrasion is avoided, the integral structure of the coaxial double primary propeller 4 driver is greatly simplified, the structure is more compact and portable, the magnetic density of the coaxial double primary propeller 4 is high, the working efficiency of the coaxial double primary propeller is far higher than that of the radial magnetic flux motor, the torque is relatively larger, the coaxial double primary propeller is suitable for direct driving occasions, the energy consumption is reduced, the energy loss problem caused by the complex transmission mechanism is avoided, and the coaxial double primary propeller 4 is suitable for unmanned aerial vehicle with a smaller volume structure.

The last points to be described are: first, in the description of the present application, it should be noted that, unless otherwise specified and defined, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be mechanical or electrical, or may be a direct connection between two elements, and "upper," "lower," "left," "right," etc. are merely used to indicate relative positional relationships, which may be changed when the absolute position of the object being described is changed;

secondly: in the drawings of the disclosed embodiments, only the structures related to the embodiments of the present disclosure are referred to, and other structures can refer to the common design, so that the same embodiment and different embodiments of the present disclosure can be combined with each other under the condition of no conflict;

finally: the foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the utility model are intended to be included within the scope of the utility model.

Claims

1. Coaxial double-oar unmanned aerial vehicle driver based on multiaspect air gap axial flux motor structure, including transmission shaft (1), the top fixedly connected with top cap (2) of transmission shaft (1), the outer wall cover of transmission shaft (1) is equipped with fixing base (3), the outer wall fixedly connected with one-level screw (4) of fixing base (3), the outer wall cover of transmission shaft (1) is equipped with control sloping cam plate (5), and control sloping cam plate (5) set up in the bottom of fixing base (3), the outer wall fixedly connected with first linking seat (6) of control sloping cam plate (5), the outer wall of first linking seat (6) articulates there is first articulated pole (7), and the one end of first articulated pole (7) articulates the outer wall at fixing base (3), the outer wall fixedly connected with second linking seat (8) of control sloping cam plate (5), the outer wall of second linking seat (8) articulates there is second articulated pole (9), its characterized in that: the bottom of control sloping cam plate (5) is equipped with holding ring (10), and holding ring (10) cover is established at the outer wall of transmission shaft (1), the outside fixedly connected with controller (11) of holding ring (10), and the one end of second articulated pole (9) articulates the outer wall at controller (11), the bottom of holding ring (10) is equipped with fixed disk (12), and fixed disk (12) cover is established at the outer wall of transmission shaft (1), the inside joint of fixed disk (12) has bearing (27).

2. The coaxial double-paddle unmanned aerial vehicle driver based on a multi-sided air gap axial flux motor structure of claim 1, wherein: the number of the primary propellers (4) and the secondary propellers (13) is two, and the two groups of primary propellers (4) and the secondary propellers (13) are arranged in a one hundred eighty degree opposite state.

3. The coaxial double-paddle unmanned aerial vehicle driver based on a multi-sided air gap axial flux motor structure of claim 1, wherein: the outer wall fixedly connected with second grade screw (13) of fixed disk (12), the inside of fixed disk (12) is equipped with fixed pinhole (14), and fixed pinhole (14) cover is established at the outer wall of transmission shaft (1), lubricating oil cooling tank (15) have been seted up to the inside of fixed disk (12), the bottom of fixed disk (12) is equipped with transmission rotor axial magnet fixed disk (16), the inside joint of transmission rotor axial magnet fixed disk (16) has rubidium iron Peng permanent magnet (17), fixedly connected with fixed pillar (18) between fixed disk (12) and transmission rotor axial magnet fixed disk (16).

4. A coaxial double-paddle unmanned aerial vehicle driver based on a multi-faceted air gap axial flux motor structure according to claim 3, wherein: the outer wall parcel of transmission rotor axial magnet fixed disk (16) has hollow stator dish (19), the inside joint of hollow stator dish (19) has first armature winding (20), first stator fixed screw (21) have been seted up to the inside of hollow stator dish (19), the bottom of hollow stator dish (19) is equipped with the same frame with hollow stator dish (19) body, the inside of frame is equipped with axial stator dish (22), the inside joint of axial stator dish (22) has second armature winding (23), and second armature winding (23) are corresponding with the inside hollow stator dish (19) of frame, the inside of axial stator dish (22) is equipped with second stator fixed screw (25).

5. The coaxial double-paddle unmanned aerial vehicle driver based on a multi-sided air gap axial flux motor structure of claim 4, wherein: the first armature winding (20) and the second armature winding (23) are formed by adopting a mode of star connection of 12 stator arrangements.

6. The coaxial double-paddle unmanned aerial vehicle driver based on a multi-sided air gap axial flux motor structure of claim 4, wherein: the first stator fixing screw hole (21) and the second stator fixing screw hole (25) are internally connected with bolts (26) in a threaded manner, and the bolts (26) penetrate through the inside of the transmission rotor axial magnet fixing disc (16) and extend to the top of the transmission rotor axial magnet fixing disc (16) to be connected with the hollow stator disc (19) at the top of the transmission rotor axial magnet fixing disc (16).