CN218703854U

CN218703854U - Simple propeller pitch-changing mechanism

Info

Publication number: CN218703854U
Application number: CN202223265690.2U
Authority: CN
Inventors: 宁慧子; 俞志明; 钟伯文; 沈亮; 杨昌发
Original assignee: Nanchang Hangkong University
Current assignee: Nanchang Hangkong University
Priority date: 2022-12-06
Filing date: 2022-12-06
Publication date: 2023-03-24
Anticipated expiration: 2032-12-06

Abstract

The utility model discloses a simple screw displacement mechanism relates to screw technical field, including lower casing, the bottom surface fixedly connected with servo motor of casing down, servo motor's output pivot runs through down the casing and extends to the inside of casing down, servo motor's output pivot fixedly connected with threaded rod, and the surface cover of threaded rod is equipped with the spiro, and the outer surface threaded connection of spiro and threaded rod, and the inner wall of lower casing is fixed to be inlayed and is had two symmetrical bearing one, the equal fixedly connected with dwang of inner circle of every bearing one. It can drive the threaded rod through servo motor and rotate, and the spiro drives the trace board rebound, and the trace board can drive the movable rod rebound, and the fly leaf drives two dwangs and rotates, and the dwang drives the paddle and rotates to adjust the pitch of variable pitch screw, make unmanned aerial vehicle wholly can adjust the pitch of self screw according to the flight needs, thereby make unmanned aerial vehicle adapt to the flight demand of different environment.

Description

Simple propeller pitch-changing mechanism

Technical Field

The utility model relates to a screw technical field specifically is a simple screw displacement mechanism.

Background

The propeller is a device which rotates in the air or water by the paddle and converts the rotating power of the engine into the propulsive force, two or more blades can be connected with a hub, the propeller is divided into a plurality of types, and the propeller is widely applied to propellers of aircrafts and ships.

The unmanned aerial vehicle is an unmanned aerial vehicle operated by utilizing a radio remote control device and a self-contained program control device, or is completely or intermittently and autonomously operated by a vehicle-mounted computer, but the pitch of the traditional unmanned aerial vehicle is relatively fixed, so that the pitch of a propeller of the unmanned aerial vehicle is difficult to be effectively adjusted according to the requirements of a flight environment; to this end, we provide a simple propeller pitch mechanism to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a simple screw displacement mechanism in order to compensate the deficiency of the prior art.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a simple screw displacement mechanism, includes casing down, the bottom surface fixedly connected with servo motor of casing down, servo motor's output pivot runs through casing down and extends to the inside of casing down, servo motor's output pivot fixedly connected with threaded rod, and the surface cover of threaded rod is equipped with the spiro ring, and the surface threaded connection of spiro ring and threaded rod.

The inner wall of lower casing is fixed to be inlayed and is had two symmetrical bearing one, the equal fixedly connected with dwang of inner circle of every bearing one, the equal fixedly connected with paddle in a side that two dwangs kept away from each other.

The equal fixedly connected with fly leaf in the side that two dwangs are close to each other, the side fixedly connected with movable rod that two fly leaves are close to each other, and the surface cover of movable rod is equipped with the activity ring, and the surface rotation of activity ring and movable rod is connected, and the surface fixedly connected with interlock board of activity ring, the one end that the activity ring was kept away from to the interlock board is articulated through the surface of round pin axle with the spiro.

The upper surface of the lower shell is fixedly connected with an upper shell, and the bottom surface of the lower shell is fixedly connected with a fixing cover.

Further, fixed cover bottom surface fixedly connected with mounting panel, the size of mounting panel upper surface is greater than the size of fixed cover bottom surface, can effectively increase the area of contact of propeller structure and unmanned aerial vehicle motor, increases stability.

Further, the upper surface of mounting panel is equipped with the screw that is annular array, and the bottom of screw runs through the mounting panel and extends to the bottom of mounting panel, and the staff of being convenient for is connected this propeller structure and unmanned aerial vehicle motor, the installation of being convenient for.

Further, the inner bottom wall of lower casing is fixed to be inlayed and is had bearing two, and servo motor's output pivot runs through bearing two and extends to the inside of lower casing, and servo motor output pivot's surface and bearing two's inner circle fixed connection, and the output pivot that can effectual reduction servo motor and the lower casing between frictional force avoid long-time use to lead to servo motor's output pivot to take place wearing and tearing.

Furthermore, the bottom surface fixedly connected with bearing three of last casing, the top of threaded rod and the inner circle fixed connection of bearing three can effectual increase threaded rod rotate the stability of in-process, avoid the threaded rod to rotate the in-process and take place to rock.

Further, servo motor's outer fixed surface is connected with solid fixed ring, and solid fixed ring's outer fixed surface is connected with two symmetrical fixed plates, and two fixed plates keep away from solid fixed ring's one end all with the inner wall fixed connection of fixed cover, stability in can effectual increase servo motor use avoids taking place to rock in the servo motor working process.

Furthermore, the outer fixed surface of fixed cover is connected with the operation indicator board, and the operation indicator board is rectangular form, can effectually remind the staff to maintain according to correct maintenance method, avoids taking place to damage because of misoperation leads to this screw mechanism.

Compared with the prior art, the simple propeller pitch-changing mechanism has the following beneficial effects:

1. the utility model discloses a servo motor drives the threaded rod and rotates, and the spiro drives the trace board rebound, and the trace board can drive the movable rod rebound, and the fly leaf drives two dwangs and rotates, and the dwang drives the paddle and rotates to adjust the pitch of variable pitch screw, make unmanned aerial vehicle wholly can adjust the pitch of self screw according to the flight needs, thereby make unmanned aerial vehicle adapt to the flight demand of different environment.

2. The utility model discloses a mounting panel can effectively increase the area of contact of propeller structure and unmanned aerial vehicle motor, increase stability, the staff of being convenient for through the screw is connected this propeller structure and unmanned aerial vehicle motor, be convenient for install, through bearing two can effectual reduction servo motor's output pivot and the frictional force between the casing down, avoid long-time use to lead to servo motor's output pivot to take place wearing and tearing, can effectual increase threaded rod through bearing three rotate the stability of in-process, avoid the threaded rod to rotate the in-process and take place to rock, can effectual increase the stability in the servo motor use through fixed plate and solid fixed ring, avoid taking place to rock in the servo motor working process.

Drawings

Fig. 1 is a front view of the present invention;

fig. 2 is a top cross-sectional view of the present invention;

fig. 3 is a front sectional view of the present invention;

fig. 4 is a bottom sectional view of the present invention.

In the figure: 1. a lower housing; 2. an upper housing; 3. rotating the rod; 4. a paddle; 5. operating an indicator panel; 6. a fixed cover; 7. a screw; 8. a spiro ring; 9. a threaded rod; 10. a first bearing; 11. a movable rod; 12. a movable ring; 13. a linkage plate; 14. a movable plate; 15. a servo motor; 16. a fixing ring; 17. a fixing plate; 18. a second bearing; 19. a third bearing; 20. and (7) mounting the plate.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

This embodiment provides a simple screw displacement mechanism, and the device is whole can adjust the pitch of self screw according to the flight needs to make unmanned aerial vehicle adapt to the flight demand of different environment.

Referring to fig. 1 to 4, a simple propeller pitch-changing mechanism includes a lower housing 1, and a servo motor 15 is fixedly connected to a bottom surface of the lower housing 1.

The output rotating shaft of the servo motor 15 penetrates through the lower shell 1 and extends to the inside of the lower shell 1, a second bearing 18 is fixedly inlaid in the inner bottom wall of the lower shell 1, the output rotating shaft of the servo motor 15 penetrates through the second bearing 18 and extends to the inside of the lower shell 1, the outer surface of the output rotating shaft of the servo motor 15 is fixedly connected with the inner ring of the second bearing 18, the friction force between the output rotating shaft of the servo motor 15 and the lower shell 1 can be effectively reduced, and the abrasion of the output rotating shaft of the servo motor 15 caused by long-time use is avoided.

Servo motor 15's output pivot fixedly connected with threaded rod 9, threaded rod 9's surface cover is equipped with spiro 8, and the surface threaded connection of spiro 8 and threaded rod 9, goes up three 19 of bottom surface fixedly connected with bearings of casing 2, and threaded rod 9's top and three 19 inner circle fixed connection of bearings can effectual increase threaded rod 9 stability of rotating the in-process, avoid threaded rod 9 to rotate the in-process and take place to rock.

The inner wall of the lower shell 1 is fixedly inlaid with two symmetrical bearings I10, the inner ring of each bearing I10 is fixedly connected with a rotating rod 3, and the two rotating rods 3 are mutually far away from one side face of each rotating rod, and the other side face of each rotating rod is fixedly connected with a paddle 4.

The equal fixedly connected with fly leaf 14 in the side that two dwang 3 are close to each other, the side fixedly connected with movable rod 11 that two fly leaves 14 are close to each other, the surface cover of movable rod 11 is equipped with movable ring 12, and movable ring 12 rotates with the surface of movable rod 11 to be connected, the outer fixed surface of movable ring 12 is connected with interlock board 13, and the one end that movable ring 12 was kept away from to interlock board 13 is articulated through the surface of round pin axle with spiro 8.

Casing 2 on the last fixed surface of casing 1 is connected with down, casing 1's the fixed cover 6 of bottom surface fixedly connected with down, servo motor 15's the solid fixed ring 16 of outer fixed surface connected with, gu fixed ring 16's two symmetrical fixed plates 17 of outer fixed surface connected with, two fixed plates 17 keep away from the one end of solid fixed ring 16 all with the inner wall fixed connection of fixed cover 6, stability in can the 15 use of effectual increase servo motor, avoid taking place to rock in the 15 working process of servo motor.

The outer fixed surface of fixed cover 6 is connected with operation indicator board 5, and operation indicator board 5 is rectangular form, can effectually remind the staff to maintain according to the exact method of maintenance, avoids taking place to damage because of improper operation leads to this screw mechanism.

6 bottom surface fixedly connected with mounting panel 20 of fixed cover, the size of the mounting panel 20 upper surface is greater than the size of 6 bottom surfaces of fixed cover, can effectively increase the area of contact of propeller structure and unmanned aerial vehicle motor, increases stability.

The upper surface of mounting panel 20 is equipped with the screw 7 that is annular array, and mounting panel 20 is run through and extend to the bottom of mounting panel 20 to the bottom of screw 7, and the staff of being convenient for is connected this propeller structure and unmanned aerial vehicle motor, the installation of being convenient for.

The working principle is as follows: at first with servo motor 15 and unmanned aerial vehicle from taking portable power source electricity to be connected, servo motor 15 drives threaded rod 9 and rotates, threaded rod 9 rotates the in-process and takes place the screw thread relation with spiro 8, spiro 8 drives linkage plate 13 rebound, linkage plate 13 can drive movable rod 11 rebound, two fly leafs 14 of movable rod 11 pulling rotate, fly leaf 14 drives two dwang 3 rotations, dwang 3 drives paddle 4 and rotates, thereby adjust the pitch of variable pitch screw, make unmanned aerial vehicle whole can be according to the flight needs, adjust the pitch of self screw, thereby make unmanned aerial vehicle adapt to the flight demand of different environment.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A simple propeller pitch change mechanism, comprising a lower housing (1), characterized in that: the bottom surface of the lower shell (1) is fixedly connected with a servo motor (15), an output rotating shaft of the servo motor (15) penetrates through the lower shell (1) and extends into the lower shell (1), a threaded rod (9) is fixedly connected with the output rotating shaft of the servo motor (15), a spiral ring (8) is sleeved on the outer surface of the threaded rod (9), and the spiral ring (8) is in threaded connection with the outer surface of the threaded rod (9);

two symmetrical first bearings (10) are fixedly embedded in the inner wall of the lower shell (1), the inner ring of each first bearing (10) is fixedly connected with a rotating rod (3), and one side surface, away from each other, of each rotating rod (3) is fixedly connected with a blade (4);

one side face, close to each other, of each of the two rotating rods (3) is fixedly connected with a movable plate (14), one side face, close to each other, of each of the two movable plates (14) is fixedly connected with a movable rod (11), a movable ring (12) is sleeved on the outer surface of each movable rod (11), the movable ring (12) is rotatably connected with the outer surface of each movable rod (11), a linkage plate (13) is fixedly connected to the outer surface of each movable ring (12), and one end, far away from the movable ring (12), of each linkage plate (13) is hinged to the outer surface of the spiral ring (8) through a pin shaft;

the upper surface of the lower shell (1) is fixedly connected with an upper shell (2), and the bottom surface of the lower shell (1) is fixedly connected with a fixing cover (6).

2. A simple propeller pitch mechanism as defined in claim 1, wherein: the bottom surface of the fixed cover (6) is fixedly connected with a mounting plate (20), and the size of the upper surface of the mounting plate (20) is larger than that of the bottom surface of the fixed cover (6).

3. A simple propeller pitch mechanism as claimed in claim 2, wherein: the upper surface of mounting panel (20) is equipped with and is annular array's screw (7), and the bottom of screw (7) runs through mounting panel (20) and extends to the bottom of mounting panel (20).

4. A simple propeller pitch mechanism as claimed in claim 1, wherein: and a second bearing (18) is fixedly embedded in the inner bottom wall of the lower shell (1), an output rotating shaft of the servo motor (15) penetrates through the second bearing (18) and extends into the lower shell (1), and the outer surface of the output rotating shaft of the servo motor (15) is fixedly connected with an inner ring of the second bearing (18).

5. A simple propeller pitch mechanism as claimed in claim 1, wherein: the bottom surface of the upper shell (2) is fixedly connected with a third bearing (19), and the top end of the threaded rod (9) is fixedly connected with the inner ring of the third bearing (19).

6. A simple propeller pitch mechanism as claimed in claim 1, wherein: the outer fixed surface of servo motor (15) is connected with solid fixed ring (16), and the outer fixed surface of solid fixed ring (16) is connected with two symmetrical fixed plates (17), and the one end that solid fixed ring (16) was kept away from in two fixed plates (17) all with the inner wall fixed connection of fixed cover (6).

7. A simple propeller pitch mechanism as claimed in claim 1, wherein: the outer surface of the fixed cover (6) is fixedly connected with an operation indicating plate (5), and the operation indicating plate (5) is rectangular.