CN220605659U

CN220605659U - Single-motor up-down coaxial structure and unmanned aerial vehicle

Info

Publication number: CN220605659U
Application number: CN202322326125.0U
Authority: CN
Inventors: 陶云松; 吴敏; 李毅; 吴小光
Original assignee: Nanchang Sanrui Intelligent Technology Co Ltd
Current assignee: Nanchang Sanrui Intelligent Technology Co Ltd
Priority date: 2023-08-29
Filing date: 2023-08-29
Publication date: 2024-03-15
Anticipated expiration: 2033-08-29

Abstract

The utility model discloses a single motor up-down coaxial structure, which comprises a stator and a rotor, wherein a steel shaft which rotates along with the rotor is arranged on the rotor; the rear output shaft is rotatably mounted on the stator, the rear output shaft is in transmission connection with the steel shaft through the reverse transmission assembly, and the steering direction of the rear output shaft is opposite to that of the steel shaft. According to the utility model, single-motor coaxial transmission is realized through the reverse transmission assembly by one motor, so that the power structure is optimized under the condition of ensuring power, and the load condition of the unmanned aerial vehicle is lightened.

Description

Single-motor up-down coaxial structure and unmanned aerial vehicle

Technical Field

The utility model relates to the technical field of coaxial structures, in particular to a single-motor up-down coaxial structure and an unmanned aerial vehicle.

Background

The coaxial double-rotor unmanned aerial vehicle has smaller volume compared with a single-rotor helicopter because the tail rotor is not required to provide balance torque; compared with a multi-rotor aircraft, the multi-rotor aircraft has a small size and a high energy utilization rate, and therefore, the multi-rotor aircraft is increasingly in an important position in various application fields such as aviation shooting, air monitoring and the like.

At present, a coaxial system on a plurality of rotor wings is mainly formed by installing two motors up and down, or two stator and rotor bodies share a rear cover to be assembled, and the motors are installed on an unmanned plane and have heavy weight and high energy consumption.

Disclosure of Invention

The utility model aims to solve the problems that: the utility model provides a coaxial structure and unmanned aerial vehicle about single motor realizes the coaxial transmission of single motor through reverse drive assembly through a motor, optimizes the power structure under the circumstances of guaranteeing power, alleviates unmanned aerial vehicle load condition.

The technical scheme provided by the utility model for solving the problems is as follows: the upper and lower coaxial structure of a single motor comprises a stator and a rotor, wherein a steel shaft which rotates along with the rotor is arranged on the rotor; the rear output shaft is rotatably mounted on the stator, the rear output shaft is in transmission connection with the steel shaft through the reverse transmission assembly, and the steering direction of the rear output shaft is opposite to that of the steel shaft.

Preferably, the stator is provided with a bearing mounting seat, a first bearing is arranged in the bearing mounting seat and matched with a rear output shaft, and the rear output shaft and the steel shaft are coaxially arranged.

Preferably, the reverse transmission assembly comprises a transmission shaft, a bearing II, a gear I, a gear II, a gear III and a gear IV, wherein the bearing II is arranged in a bearing mounting seat, the transmission shaft is matched with the bearing II, the gear I and the gear II are installed on the transmission shaft at intervals, the gear III is installed at the upper end of a steel shaft, the gear IV is installed at the lower end of a rear output shaft, the gear I and the gear III are in belt transmission, and the gear II and the gear IV are in meshed transmission.

Preferably, the two bearings are arranged at two ends of the transmission shaft.

Preferably, two bearings III matched with the steel shaft are arranged in the rotor.

Preferably, a rear paddle seat is arranged on the rear output shaft.

Preferably, a plurality of radial threaded holes are formed in the rear paddle seat, clamping grooves are formed in positions, corresponding to the threaded holes, of the rear output shaft, organic screw threads are arranged in the threaded holes, and the organic screw threads penetrate through the threaded holes and enter the clamping grooves.

The utility model also discloses an unmanned aerial vehicle which comprises the single-motor vertical coaxial structure.

Compared with the prior art, the utility model has the advantages that: according to the utility model, single-motor coaxial transmission is realized through the reverse transmission assembly by one motor, so that the power structure is optimized under the condition of ensuring power, and the load condition of the unmanned aerial vehicle is lightened.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model.

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a cross-sectional view of the present utility model;

fig. 3 is a schematic diagram of an exploded construction of the present utility model.

The drawings are marked: 1. the motor comprises a stator, 2, a rear propeller seat, 3, a bearing mounting seat, 4, a rotor, 5, a machine screw, 6, a rear output shaft, 7, a third gear, 8, a third bearing, 9, a steel shaft, 10, a belt, 11, a transmission shaft, 12, a first gear, 13, a second bearing, 14, a second gear, 15, a fourth gear, 16 and a first bearing.

Detailed Description

The following detailed description of embodiments of the present utility model will be given with reference to the accompanying drawings and examples, by which the implementation process of how the present utility model can be applied to solve the technical problems and achieve the technical effects can be fully understood and implemented.

In the description of the present utility model, it should be noted that, for the azimuth words such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the azimuth and positional relationships are based on the azimuth or positional relationships shown in the drawings, it is merely for convenience of describing the present utility model and simplifying the description, and it is not to be construed as limiting the specific scope of protection of the present utility model that the device or element referred to must have a specific azimuth configuration and operation.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features. Thus, the definition of "a first", "a second" or "a second" feature may explicitly or implicitly include one or more such feature, and in the description of the utility model, the meaning of "a number" is two or more, unless otherwise specifically defined.

In the present utility model, unless explicitly stated and limited otherwise, the terms "assembled," "connected," and "connected" are to be construed broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; or may be a mechanical connection; can be directly connected or connected through an intermediate medium, and can be communicated with the inside of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Example 1

The single-motor up-down coaxial structure comprises a stator 1 and a rotor 4, wherein a steel shaft 9 which rotates along with the rotor 4 is arranged on the rotor; the rear output shaft 6 is rotatably mounted on the stator 1, the rear output shaft 6 is in transmission connection with the steel shaft 9 through the reverse transmission assembly, and the steering direction of the rear output shaft 6 is opposite to that of the steel shaft 9.

In this embodiment, the stator 1 is provided with a bearing mounting seat 3, a first bearing 16 is disposed in the bearing mounting seat 3, the first bearing 16 is matched with the rear exiting shaft 6, and the rear exiting shaft 6 and the steel shaft 9 are coaxially disposed.

In the scheme, the single motor is coaxially driven through the reverse driving assembly through one motor, so that the power structure is optimized under the condition of ensuring power, and the load condition of the unmanned aerial vehicle is lightened.

Specifically, the reverse transmission assembly comprises a transmission shaft 11, a bearing II 13, a gear I12, a gear II 14, a gear III 7 and a gear IV 15, wherein the bearing II 13 is arranged in the bearing mounting seat 3, the transmission shaft 11 is matched with the bearing II 13, the gear I12 and the gear II 14 are installed on the transmission shaft 11 at intervals, the gear III 7 is installed at the upper end of the steel shaft 9, the gear IV 15 is installed at the lower end of the rear output shaft 6, the gear I12 and the gear III 7 are transmitted through a belt 10, and the gear II 14 and the gear IV 15 are meshed for transmission. Furthermore, in order to improve the stability of the transmission shaft during rotation, two bearings 13 are provided at two ends of the transmission shaft 11.

The gear III is specifically installed in the following way: the copper bush is arranged on the small diameter of the lower end of the steel shaft, 4 pins 1 (matched with 4 circular grooves on the steel shaft) are arranged in the copper bush, a gear III (with 4 pin grooves formed in the inner part) is assembled on the steel shaft, and the gear III is limited by the 4 pins 1 on the steel shaft to prevent radial rotation; and then a gasket is put on the steel shaft, and the gear III is limited by assembling a clamp spring, so that the gear three-axis movement is prevented.

In the scheme, the motor internal gear and the belt drive the motor external gear to rotate, and the external gears are meshed with each other, so that the aim of reversing the rotation direction of the output shaft at the other end is fulfilled.

The concrete mounting mode between the steel shaft and the rotor is as follows: two bearings III 8 matched with a steel shaft 9 are arranged in the rotor 4, and the lower end of the steel shaft is fixed with the rotor through 4 countersunk head screws 1 after the steel shaft sleeve is arranged on the bearings III.

For convenience in fixing the blade, the rear output shaft 6 is provided with a rear paddle seat 2. The specific fixing mode between the paddle seat and the rear output shaft is as follows: be provided with a plurality of radial screw holes on the back oar seat 2, the last position that corresponds with the screw hole of back go out of axle 6 is provided with the draw-in groove, threaded hole is provided with organic meter screw 5, machine meter screw 5 passes the screw hole and enters into the draw-in groove. Specifically, the boss part of the rear paddle seat is used for positioning paddles; the paddles at two ends are fixed on the motor through screws and pressing plates.

Wherein, the concrete installation process of this scheme:

1. the second bearing is arranged on the motor stator through a bearing mounting plate and countersunk head screws;

2. fixing one end of a transmission shaft through a clamp spring, and placing a gasket;

3. the transmission shaft is provided with a key slot, a round head flat key is put in the transmission shaft, and the first gear is internally provided with the key slot to be matched with the round head flat key, so that the first gear is prevented from rotating radially on the transmission shaft;

4. a bearing III is respectively arranged in the two bearing holes on the stator;

5. the steel shaft is matched with the rotor and fixed through 4 countersunk screws;

6. assembling the assembled stator and rotor together, and fixing the assembled stator and rotor by using a clamp spring to prevent the rotor from flying out in the running process;

7. the copper bush is arranged on the small diameter of the lower end of the steel shaft, and 4 pins (matched with 4 circular grooves on the steel shaft) are put in;

8. the gear III (4 pin grooves are formed in the gear III) is assembled on the steel shaft, and the gear III is limited by the 4 pins on the steel shaft to prevent the gear III from radial rotation;

9. a gasket is put on the steel shaft, and the gear III is limited by assembling a clamp spring, so that the gear is prevented from axially moving;

10. connecting the 3 rd point, assembling the gasket and the transmission shaft together and contacting one end surface of the gear;

11. inserting the assembled assembly into a second bearing, and separating the gear from the second bearing through a gasket to prevent direct contact;

12. the installation belt is meshed with the first gear and the third gear respectively;

13. placing a gasket into the round flat key and the other key slot of the transmission shaft;

14. assembling a second gear on the transmission shaft, and placing a gasket;

15. the other bearing II is arranged in the gear shield;

16. the assembled gear shield and the assembled gear II are put into a gasket, and the gasket is fixed through a clamp spring to prevent the whole structure from moving in series;

17. the gear shield is fixed on the stator through 4 cup head screws;

18. the centering seat is arranged on the stator through 2 positioning pins, so that the centering seat and the motor stator are concentric;

19. the first bearing is arranged in the rear output shaft;

20. the gear IV is assembled with the rear output shaft, pin grooves are formed in the gear IV and the rear output shaft, and the gear IV and the rear output shaft are inserted through pins to cooperate to prevent radial rotation of the gear;

21. loading the first bearing into the bearing mounting seat;

22. the assembled rear output shaft is put into a gasket and then assembled with the assembled bearing mounting seat;

23. and (5) placing a gasket and a retainer ring. Axial play is prevented;

24. an inner clamping spring is arranged in the bearing seat to prevent the first bearing from falling off;

25. the bearing mounting seat is fixed on the stator through a cup head screw;

26. the rear propeller seat is arranged on the rear output shaft and is respectively fixed with 1 countersunk head screw through 8 machine meter screws;

27. the boss part of the rear paddle seat is used for positioning paddles;

28. the paddles at two ends are fixed on the motor through screws and pressing plates.

Example 2

A unmanned aerial vehicle comprising a single motor up-down coaxial structure as described in embodiment 1.

It should be noted that, in this embodiment, the rest of the structural components of the unmanned aerial vehicle belong to the prior art, and those skilled in the art can design according to the needs, so that no further description is provided in this embodiment.

The foregoing is illustrative of the preferred embodiments of the present utility model and is not to be construed as limiting the claims. The present utility model is not limited to the above embodiments, and the specific structure thereof is allowed to vary. All changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims

1. The single-motor up-down coaxial structure comprises a stator (1) and a rotor (4), wherein a steel shaft (9) which rotates along with the rotor (4) is arranged on the rotor; the method is characterized in that: the novel steering device is characterized by further comprising a rear output shaft (6) and a reverse transmission assembly, wherein the rear output shaft (6) is rotatably arranged on the stator (1), the rear output shaft (6) is in transmission connection with the steel shaft (9) through the reverse transmission assembly, and the steering direction of the rear output shaft (6) is opposite to that of the steel shaft (9).

2. A single motor up-down coaxial structure according to claim 1, wherein: the stator (1) is provided with a bearing mounting seat (3), a first bearing (16) is arranged in the bearing mounting seat (3), the first bearing (16) is matched with a rear exiting shaft (6), and the rear exiting shaft (6) and a steel shaft (9) are coaxially arranged.

3. A single motor up-down coaxial structure according to claim 2, wherein: the reverse transmission assembly comprises a transmission shaft (11), a bearing II (13), a gear I (12), a gear II (14), a gear III (7) and a gear IV (15), wherein the bearing II (13) is arranged in a bearing mounting seat (3), the transmission shaft (11) is matched with the bearing II (13), the gear I (12) and the gear II (14) are installed on the transmission shaft (11) at intervals, the gear III (7) is installed at the upper end of a steel shaft (9), the gear IV (15) is installed at the lower end of a rear output shaft (6), the gear I (12) and the gear III (7) are in transmission through a belt (10), and the gear II (14) and the gear IV (15) are in meshed transmission.

4. A single motor up-down coaxial structure according to claim 3, wherein: the two bearings (13) are arranged at two ends of the transmission shaft (11).

5. A single motor up-down coaxial structure according to claim 1, wherein: two bearings III (8) matched with the steel shaft (9) are arranged in the rotor (4).

6. A single motor up-down coaxial structure according to claim 1, wherein: the rear output shaft (6) is provided with a rear paddle seat (2).

7. The single motor up-down coaxial structure of claim 6, wherein: be provided with a plurality of radial screw holes on back oar seat (2), back go out on axle (6) and the position that corresponds with the screw hole is provided with the draw-in groove, threaded hole internal is provided with organic meter screw (5), machine meter screw (5) pass the screw hole and enter into the draw-in groove.

8. An unmanned aerial vehicle, its characterized in that: a single motor up-down coaxial arrangement comprising any one of claims 1-7.