CN211943719U - Survey and drawing unmanned aerial vehicle screw of making an uproar that falls - Google Patents
Survey and drawing unmanned aerial vehicle screw of making an uproar that falls Download PDFInfo
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- CN211943719U CN211943719U CN202020529689.8U CN202020529689U CN211943719U CN 211943719 U CN211943719 U CN 211943719U CN 202020529689 U CN202020529689 U CN 202020529689U CN 211943719 U CN211943719 U CN 211943719U
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- aerial vehicle
- unmanned aerial
- sound
- support arm
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Abstract
The utility model relates to a survey and drawing unmanned aerial vehicle technical field discloses a survey and drawing unmanned aerial vehicle falls screw of making an uproar, including the unmanned aerial vehicle body, unmanned aerial vehicle lateral wall is four support arms that are the symmetric distribution of horizontal fixedly connected with all around, is located support arm upper portion is kept away from the vertical fixedly connected with motor that makes progress in position of unmanned aerial vehicle body, the transmission shaft pole up end fixedly connected with screw of motor is located the sound axle sleeve of inhaling has been cup jointed in the activity on the transmission shaft pole of motor. The porous sound absorbing mechanism is sleeved on the support arm, the noise reduction ring and the transmission shaft lever of the motor, and the porous sound absorbing material can be made of porous materials which attenuate sound waves by a plurality of tiny open pore passages from the surface to the inside of the sound absorbing material, so that the absorption of medium-high frequency sound waves is mainly performed, and the high-frequency sound waves are generated due to the high-speed rotation of the propeller, so that the noise of the propeller is reduced; and the support arm sound-absorbing sleeve are both arranged into a diamond structure, so that wind resistance and wind noise are greatly reduced, and the noise is further reduced.
Description
Technical Field
The utility model relates to a survey and drawing unmanned aerial vehicle technical field specifically is a survey and drawing unmanned aerial vehicle falls screw of making an uproar.
Background
Currently, surveying unmanned aircraft, referred to as drone for short, is an unmanned surveying aircraft operated by a radio remote control device and a self-contained program control device, or operated autonomously, either completely or intermittently, by an onboard computer.
Survey and drawing unmanned aerial vehicle among the prior art is great because the high-speed rotatory noise that produces of screw, and partly reason is because unmanned aerial vehicle's motor support arm is the platykurtic, and the windage and the noise that produce when the screw is high-speed rotatory are great, cause some puzzlements to user's in-service use.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a survey and drawing unmanned aerial vehicle falls screw of making an uproar has solved the problem that proposes in the background art.
In order to achieve the above object, the utility model provides a following technical scheme: a noise reduction propeller for a surveying and mapping unmanned aerial vehicle comprises an unmanned aerial vehicle body, wherein four symmetrically-distributed support arms are horizontally and fixedly connected to the periphery of the side wall of the unmanned aerial vehicle body, a motor is vertically and upwards fixedly connected to the position, far away from the unmanned aerial vehicle body, on the upper portion of each support arm, a propeller is fixedly connected to the upper end face of a transmission shaft of the motor, and a sound absorption shaft sleeve is movably sleeved on a transmission shaft lever of the motor;
the support arm is sleeved with a support arm sound absorption sleeve; and the middle position of the upper part of the support arm is vertically and upwards fixedly connected with a support rod, the upper end surface of the support rod is fixedly connected with the bottom of the noise reduction ring, and the inner wall of the noise reduction ring is fixedly connected with a sound absorption ring.
As a preferred embodiment of the present invention, the lower end surface of the sound-absorbing shaft sleeve is fixedly connected to the upper portion of the motor.
As a preferred embodiment of the present invention, the sound-absorbing sleeves of the support arms and the support arms are of a diamond structure.
As a preferred embodiment of the present invention, the sound absorbing ring, the sound absorbing sleeve and the supporting arm sound absorbing sleeve are made of porous open-cell foam plastic or expanded perlite.
Compared with the prior art, the beneficial effects of the utility model are as follows:
the porous sound absorbing mechanism is sleeved on the support arm, the noise reduction ring and the transmission shaft lever of the motor, and the porous sound absorbing material can be made of porous materials which attenuate sound waves by a plurality of tiny open pore passages from the surface to the inside of the sound absorbing material, so that the absorption of medium-high frequency sound waves is mainly performed, and the high-frequency sound waves are generated due to the high-speed rotation of the propeller, so that the noise of the propeller is reduced; and the support arm sound-absorbing sleeve are both arranged into a diamond structure, so that wind resistance and wind noise are greatly reduced, and the noise is further reduced.
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 view of the overall structure of a noise reduction propeller of a surveying and mapping unmanned aerial vehicle according to the present invention;
FIG. 2 is a schematic diagram of a side view structure of the connection between the support arm, the motor and the propeller of the noise reduction propeller of the unmanned aerial vehicle for mapping according to the present invention;
fig. 3 is a schematic view of the overlooking structure of the sound absorbing ring of the noise reduction propeller of the unmanned aerial vehicle according to the present invention;
figure 4 is the utility model relates to a survey and drawing unmanned aerial vehicle falls support arm of screw of making an uproar and looks sideways at schematic diagram.
In the figure: 1. an unmanned body; 2. a noise reduction ring; 3. a support arm; 4. a motor; 5. a propeller; 6. a strut; 7. a sound absorbing ring; 8. a sound-absorbing shaft sleeve; 9. the sound sleeve is inhaled to the support arm.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following 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, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, 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, and may for example be fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-4, the present invention provides a technical solution: a noise reduction propeller of a surveying and mapping unmanned aerial vehicle comprises an unmanned aerial vehicle body 1, wherein four symmetrically-distributed support arms 3 are horizontally and fixedly connected to the periphery of the side wall of the unmanned aerial vehicle body 1, a motor 4 is vertically and upwards fixedly connected to the upper portion of each support arm 3, which is far away from the unmanned aerial vehicle body 1, the upper end face of a transmission shaft lever of the motor 4 is fixedly connected with a propeller 5, and a sound absorption shaft sleeve 8 is movably sleeved on the transmission shaft lever of the motor 4;
a support arm sound absorption sleeve 9 is sleeved on the support arm 3; the middle position of the upper part of the support arm 3 is vertically and upwards fixedly connected with a support rod 6, the upper end surface of the support rod 6 is fixedly connected with the bottom of the noise reduction ring 2, and the inner wall of the noise reduction ring 2 is fixedly connected with a sound absorption ring 7.
In this embodiment, the lower end surface of the sound-absorbing boss 8 is fixedly connected to the upper portion of the motor 4.
In this embodiment, the supporting arm 3 and the supporting arm sound-absorbing sleeve 9 are both of a diamond structure, and the supporting arm 3 and the supporting arm sound-absorbing sleeve 9 are both set to be of a diamond structure, so that wind resistance and wind noise are greatly reduced, and noise is further reduced.
In this embodiment, the sound absorbing ring 7, the sound absorbing sleeve 8 and the support arm sound absorbing sleeve 9 are all one of open-cell foam plastics and expanded perlite with porous structures, and the porous sound absorbing material can mainly absorb medium-high frequency sound waves by a porous material which attenuates the sound waves through a plurality of fine open pores from the surface to the inside of the sound absorbing material, and the high-frequency sound waves are generated due to the high-speed rotation of the propeller, so that the noise of the propeller is reduced; and the support arm 3 and the support arm sound-absorbing sleeve 9 are both arranged to be of a diamond structure, so that wind resistance and wind noise are greatly reduced, and the noise is further reduced.
When the mapping unmanned aerial vehicle noise reduction propeller is used, it needs to be explained that the utility model relates to a mapping unmanned aerial vehicle noise reduction propeller, which comprises an unmanned aerial vehicle body 1; 2. a noise reduction ring; 3. a support arm; 4. A motor; 5. a propeller; 6. a strut; 7. a sound absorbing ring; 8. a sound-absorbing shaft sleeve; 9. the sound-absorbing sleeve for the supporting arm is a universal standard part or a part known by a person skilled in the art, and the structure and the principle of the sound-absorbing sleeve are known by technical manuals or conventional experimental methods.
When the sound absorption structure is used, the porous sound absorption mechanisms are sleeved on the transmission shaft rods of the support arm 3, the noise reduction ring 2 and the motor 4, and the porous sound absorption material can absorb medium-high frequency sound waves mainly by a porous material which can attenuate the sound waves through a plurality of fine open pore passages from the surface to the inside of the sound absorption material, and the high-frequency sound waves are generated due to the high-speed rotation of the propeller, so that the noise of the propeller is reduced; and the support arm 3 and the support arm sound-absorbing sleeve 9 are both arranged to be of a diamond structure, so that wind resistance and wind noise are greatly reduced, and the noise is further reduced.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. 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.
Claims (4)
1. The utility model provides a survey and drawing unmanned aerial vehicle falls screw of making an uproar, includes unmanned organism (1), its characterized in that: four symmetrically-distributed support arms (3) are horizontally and fixedly connected to the periphery of the side wall of the unmanned aerial vehicle body (1), a motor (4) is vertically and upwardly fixedly connected to the position, far away from the unmanned aerial vehicle body (1), of the upper portion of each support arm (3), a propeller (5) is fixedly connected to the upper end face of a transmission shaft of each motor (4), and a sound-absorbing shaft sleeve (8) is movably sleeved on the transmission shaft of each motor (4);
a support arm sound-absorbing sleeve (9) is sleeved on the support arm (3); and the upper end surface of the supporting arm (3) is fixedly connected with the bottom of the noise reduction ring (2), and the inner wall of the noise reduction ring (2) is fixedly connected with a sound absorption ring (7).
2. The unmanned aerial vehicle of claim 1, survey and drawing noise reduction screw of claim 1, characterized in that: the lower end face of the sound-absorbing shaft sleeve (8) is fixedly connected with the upper part of the motor (4).
3. The unmanned aerial vehicle of claim 1, survey and drawing noise reduction screw of claim 1, characterized in that: the support arm (3) and the support arm sound absorption sleeve (9) are both of a diamond structure.
4. The unmanned aerial vehicle of claim 1, survey and drawing noise reduction screw of claim 1, characterized in that: the sound-absorbing ring (7), the sound-absorbing shaft sleeve (8) and the support arm sound-absorbing sleeve (9) are all one of open-cell foam plastics and expanded perlite with porous structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020529689.8U CN211943719U (en) | 2020-04-13 | 2020-04-13 | Survey and drawing unmanned aerial vehicle screw of making an uproar that falls |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020529689.8U CN211943719U (en) | 2020-04-13 | 2020-04-13 | Survey and drawing unmanned aerial vehicle screw of making an uproar that falls |
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| Publication Number | Publication Date |
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| CN211943719U true CN211943719U (en) | 2020-11-17 |
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| CN202020529689.8U Active CN211943719U (en) | 2020-04-13 | 2020-04-13 | Survey and drawing unmanned aerial vehicle screw of making an uproar that falls |
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| CN (1) | CN211943719U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102372505B1 (en) * | 2021-08-19 | 2022-03-08 | 최진호 | Air drone device for tracking and observing wild animal |
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2020
- 2020-04-13 CN CN202020529689.8U patent/CN211943719U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102372505B1 (en) * | 2021-08-19 | 2022-03-08 | 최진호 | Air drone device for tracking and observing wild animal |
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