CN213502889U

CN213502889U - Duct device and unmanned aerial vehicle

Info

Publication number: CN213502889U
Application number: CN202021735064.3U
Authority: CN
Inventors: 龚玄辉
Original assignee: Hainan Huanqiong Technology Co ltd
Current assignee: Hainan Huanqiong Technology Co ltd
Priority date: 2020-08-19
Filing date: 2020-08-19
Publication date: 2021-06-22
Anticipated expiration: 2030-08-19

Abstract

The application discloses a duct device and an unmanned aerial vehicle, wherein the duct device comprises a duct body, and a supporting part, a driving part, a transmission part and blades which are arranged on the duct body, wherein the supporting part comprises a supporting rod which plays a role in supporting and fixing the device in the duct body; the driving part comprises a motor and plays a role in power support; the transmission portion includes the worm, first worm wheel, the second worm wheel, first gear, the second gear, first transmission shaft, the second drive shaft, the third transmission shaft, the paddle includes forward screw and reverse screw, forward screw leads to, install on the second transmission shaft, reverse screw is through installing on the third transmission shaft, realize the coaxial reversal of screw, can provide bigger air input and air current density, the one-way pivoted deflection moment is fallen in the balance, eliminate the air vortex of apex, in order to guarantee that the duct provides bigger lift, the not enough technical problem of duct air input has effectively been solved.

Description

Duct device and unmanned aerial vehicle

Technical Field

The application relates to duct device technical field especially relates to a duct device and unmanned aerial vehicle.

Background

Duct unmanned aerial vehicle is the motor drive screw, and it is internal that the rotatory drive gas through the screw flows into the duct, and unmanned aerial vehicle relies on the recoil force that duct gas combustion gas provided to realize flying, consequently to a certain extent, and the air input becomes the important factor who influences lift, and the unmanned aerial vehicle that exists has the not enough technical problem of duct air input in the existing market.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a duct device and unmanned aerial vehicle for solve the not enough technical problem of duct air input.

In view of the above, the present application provides a ducted device, which includes a ducted body, a support portion, a driving portion, a transmission portion and a blade, wherein the support portion includes a support rod, the support rod is disposed in the ducted body in a crossed manner, the driving portion is disposed on the support rod, the transmission portion includes a worm, a first worm wheel, a second worm wheel, a first gear, a second gear, a first transmission shaft, a second transmission shaft and a third transmission shaft, the second worm wheel and the first gear are disposed on the first transmission shaft, the first worm wheel is disposed on the second transmission shaft, the second gear is disposed on the third transmission shaft, the first gear is engaged with the second gear, one side of the worm is in transmission connection with the first worm wheel, the other side is in transmission connection with the second worm wheel, the worm is connected with an output end of the driving portion, the third transmission shaft sleeve is established on the second transmission shaft, the paddle includes forward screw and reverse screw, the forward screw is installed on the second transmission shaft, the reverse screw is installed on the third transmission shaft.

Optionally, a bearing is provided between the third drive shaft and the second drive shaft.

Optionally, the driving part comprises a motor and a protective shell, the protective shell is arranged at the center of the supporting rod, the motor is arranged in the protective shell, and an output shaft of the motor is connected with the worm.

Optionally, the forward propeller and the reverse propeller are both swept blade structures.

Optionally, the duct body is provided with a silencing unit, and the silencing unit is covered and arranged on the inner side of the duct body.

Optionally, the sound deadening unit employs a sound deadening sponge.

Optionally, the driving part is provided with a damping unit, the damping unit is arranged in the protective shell, one end of the damping unit is connected with the motor, and the other end of the damping unit is connected with the protective shell.

Optionally, the damping unit is a spring.

Optionally, the stent body is divided into an upper portion, a middle portion and a lower portion, the upper portion inner diameter and the lower portion inner diameter each being greater than the middle portion inner diameter. Is divided into an upper part, a middle part and a lower part, the upper part.

Optionally, a first fixing rod is arranged on the second transmission shaft, a first fixing hole is formed in the first fixing rod, the forward propeller is installed on the second transmission shaft through the first fixing hole, a second fixing rod is arranged on the third transmission shaft, a second fixing hole is formed in the second fixing rod, and the reverse propeller is installed on the third transmission shaft through the second fixing hole.

The application also provides an unmanned aerial vehicle, including as above the duct device.

According to the technical scheme, the embodiment of the application has the following advantages:

the ducted device and the unmanned aerial vehicle provided in the embodiment of the application comprise a ducted body, and a supporting part, a driving part, a transmission part and blades which are arranged on the ducted body; the supporting part comprises a supporting rod which plays a role in supporting and fixing the device in the culvert body; the driving part provides power support for the duct body; the transmission part can realize the coaxial reversal of the propeller, provide larger air input and airflow density for the duct body, balance the deflection torque of the propeller in unidirectional rotation, eliminate the air vortex of the blade tip, ensure that the duct provides larger lift force, and effectively solve the technical problem of insufficient air input of the duct.

Drawings

Figure 1 is a schematic structural view of a bypass device provided in an embodiment of the present application;

figure 2 is a cross-sectional view of a bypass device provided in an embodiment of the present application;

figure 3 is a cross-sectional view of a drive portion of a bypass device provided in an embodiment of the present application;

FIG. 4 is a schematic structural view of a transmission portion of a bypass device provided in an embodiment of the present application;

fig. 5 is an enlarged view of a portion a in fig. 4.

Wherein the reference numerals are:

1. a duct body; 2. a forward propeller; 3. a reverse propeller; 4. a support bar; 5. a transmission section; 501. A worm; 502. a first worm gear; 503. a second worm gear; 504. a first gear; 505. a first drive shaft; 506. a second gear; 507. a second drive shaft; 508. a third drive shaft; 509. a second fixing hole; 510. a second fixing bar; 511. a first fixing lever; 512. a first fixing hole; 6. a drive section; 601. A motor; 602. a spring; 603. a protective shell; 7. amortization sponge.

Detailed Description

In order to make the technical solutions of the present application better understood, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "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 in describing the embodiments of the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present application, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected unless explicitly stated or limited otherwise; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. Specific meanings of the above terms in the embodiments of the present application can be understood in specific cases by those of ordinary skill in the art.

For easy understanding, the technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings, please refer to fig. 1 to 5.

One embodiment of a ducted device provided herein includes: the culvert body 1, the supporting part, the driving part 6, the transmission part 5 and the paddle; the duct body 1 is a PMI foam duct body and is set as an independent duct; the supporting part comprises supporting rods 4, the supporting rods 4 are arranged in the duct body 1 in a crossed mode, and the supporting rods 4 and the duct body 1 adopt an integrated structure; the driving part 6 is arranged on the support rod 4; a transmission part 5 is arranged above the driving part 6, the transmission part 5 comprises a worm 501, a first worm wheel 502, a second worm wheel 503, a first gear 504, a second gear 506, a first transmission shaft 505, a second transmission shaft 507 and a third transmission shaft 508, the second worm wheel 503 and the first gear 504 are arranged on the first transmission shaft 505, and the first gear 504 is positioned above the second worm wheel 503; the first worm gear 502 is arranged on the second transmission shaft 507; second gear 506 is disposed on third drive shaft 508; the first gear 504 is in meshed connection with the second gear 506; one side of the worm 501 is in transmission connection with a first worm wheel 502, and the other side of the worm 501 is in transmission connection with a second worm wheel 503; the worm 501 is connected with the output end of the driving part 6; the third transmission shaft 508 is sleeved on the second transmission shaft 507, and the third transmission shaft 508 can rotate relative to the second transmission shaft 507; the blades comprise a forward propeller 2 and a reverse propeller 3, the forward propeller 2 being mounted on a second drive shaft 507, and the reverse propeller 3 being mounted on a third drive shaft 508.

The output shaft of the motor 601 drives the worm 501 to run, the rotation of the worm 501 drives the first worm wheel 502 and the second worm wheel 503 to run simultaneously, the rotation of the second worm wheel 503 drives the first gear 504 to run synchronously, the first gear 504 drives the second gear 506 to run synchronously, the rotation of the second gear 506 drives the third transmission shaft 508 to run, and the rotation of the third transmission shaft 508 causes the reverse propeller 3 installed on the third transmission shaft to run synchronously; the rotation of the first worm gear 502 drives the second transmission shaft 507 to rotate, and the rotation of the second transmission shaft 507 enables the forward propeller 2 installed thereon to synchronously rotate.

It should be noted that, the ducted body provided in the ducted device of the embodiment of the present application is characterized in that the distance between the two stages of propellers is 1/3 at the height of the ducted body 1, and the forward propeller 2 is arranged at 1/3 from the inlet of the ducted body, so that the maximum air intake can be provided, and the maximum lift can be provided; the internal portion of duct is equipped with the two-stage screw, the one-level screw is forward screw 2, the second grade screw is reverse screw 3, and this two-stage screw passes through transmission portion 5 and realizes coaxial reversal, unidirectional rotation's deflection moment can be balanced to fall, and the setting of forward screw can bring the effect of "precommpression" for reverse screw, can make reverse screw provide bigger air input and air displacement and bigger air current density, guarantee that this duct body 1 can provide sufficient air input, the not enough technical problem of duct device air input has been solved.

As a further improvement of the ducted device in the embodiment of the present application, a bearing is provided between the third transmission shaft 508 and the second transmission shaft 507, so that the third transmission shaft 508 is sleeved on the second transmission shaft 507 to prevent slipping, and coaxial reverse rotation of the two-stage propeller can be realized.

As a further improvement of the ducted device in the embodiment of the present application, the driving portion 6 provided in the embodiment of the present application includes a motor 601 and a protective shell 603, the protective shell 603 is disposed at the center of the supporting rod 4, it is ensured that the center of the ducted body 1 is consistent with the position of the center of gravity, the motor 601 is disposed in the protective shell 603, the output shaft of the motor 601 is connected with the worm 501, it is ensured that the motor 601 provides power support for the ducted body 1, and the synchronous operation of the first worm wheel 502, the second worm wheel 503 and the motor output shaft is realized.

As a further improvement of the ducted device in the embodiment of the application, the forward propeller 2 and the reverse propeller 3 provided in the embodiment of the application are both of swept-curved blade structures, so that the occurrence of the flow separation of blade roots can be delayed, and the noise can be reduced.

As a further improvement to the ducted device of the embodiment of the present application, the fixing portion provided in the embodiment of the present application is further provided with a silencing unit, the silencing unit adopts a silencing sponge 7, and the silencing sponge 7 is covered and disposed on the inner side of the ducted body 1 to eliminate the noise generated by the blades in the rotating process.

As the further improvement to a duct device of this application embodiment, the drive division 6 that provides in this application embodiment still includes the shock attenuation unit, this shock attenuation unit one end and protective housing fixed connection, the other end and motor fixed connection, the shock attenuation unit is the spring to can not cause the influence to unmanned aerial vehicle's flight when guaranteeing the motor operation, or unmanned aerial vehicle can not cause the influence to the operation of motor when the air current jolts when flying.

As a further improvement of the ducted device of the embodiment of the application, the ducted body 1 provided in the embodiment of the application is divided into an upper part, a middle part and a lower part, the inner diameter of the upper part and the inner diameter of the lower part are both larger than the inner diameter of the middle part, the upper part and the middle part of the ducted body 1 form a similar inverted horn-shaped structure, so that the air inflow is increased, the lower part and the middle part of the ducted body 1 form a similar horn-shaped structure, the exhaust volume is increased, and the lift force is increased.

Referring to fig. 4 and 5, as a further improvement of the ducted device of the embodiment of the present application, a first fixing rod 511 is disposed on the second transmission shaft 507 provided in the embodiment of the present application, a first fixing hole 512 is disposed on the first fixing rod 511, the forward propeller 2 is mounted on the second transmission shaft 507 through the first fixing hole 512, a second fixing rod 510 is disposed on the third transmission shaft 508, a second fixing hole 509 is disposed on the second fixing rod 510, and the reverse propeller 3 is mounted on the third transmission shaft 508 through the second fixing hole 509, so that the synchronous operation of the blades and the transmission shafts can be realized.

The embodiment of the application further provides an unmanned aerial vehicle, including as above the duct device, obviously the unmanned aerial vehicle of this application has the same beneficial effect with the duct device.

The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims

1. A ducted device is characterized by comprising a ducted body, a supporting part, a driving part, a transmission part and paddles, wherein the supporting part comprises supporting rods, the supporting rods are arranged in the ducted body in a crossed manner, the driving part is arranged on the supporting rods, the transmission part comprises a worm, a first worm wheel, a second worm wheel, a first gear, a second gear, a first transmission shaft, a second transmission shaft and a third transmission shaft, the second worm wheel and the first gear are arranged on the first transmission shaft, the first worm wheel is arranged on the second transmission shaft, the second gear is arranged on the third transmission shaft, the first gear is meshed with the second gear, one side of the worm is in transmission connection with the first worm wheel, the other side of the worm is in transmission connection with the second worm wheel, the worm is connected with the output end of the driving part, the third transmission shaft is sleeved on the second transmission shaft, the paddle includes forward screw and reverse screw, forward screw install on the second transmission shaft, reverse screw install on the third transmission shaft.

2. A bypass device according to claim 1, wherein a bearing is provided between said third drive shaft and said second drive shaft.

3. The ducted device according to claim 1, wherein said forward propeller and said reverse propeller are both swept blade structures.

4. The ducted device according to claim 1, wherein said ducted body is provided with a sound deadening unit which is disposed inside said ducted body in a covering manner.

5. The bypass device according to claim 4, wherein said noise dampening unit is a noise dampening sponge.

6. The bypass device according to claim 1, wherein the driving unit comprises a motor and a protective casing, the protective casing is disposed at the center of the supporting rod, the motor is disposed in the protective casing, an output shaft of the motor is connected to the worm, the damping unit is disposed in the protective casing, and one end of the damping unit is connected to the motor and the other end is connected to the protective casing.

7. The bypass device according to claim 6, wherein said shock absorbing unit is a spring.

8. The bypass device according to claim 1, wherein said bypass body is divided into an upper portion, a middle portion and a lower portion, said upper portion inner diameter and said lower portion inner diameter each being greater than said middle portion inner diameter.

9. The bypass device according to claim 1, wherein said second transmission shaft is provided with a first fixing rod, said first fixing rod is provided with a first fixing hole, said forward screw propeller is mounted on said second transmission shaft through said first fixing hole, said third transmission shaft is provided with a second fixing rod, said second fixing rod is provided with a second fixing hole, and said reverse screw propeller is mounted on said third transmission shaft through said second fixing hole.

10. A drone, characterized in that it comprises a bypass device according to any one of claims 1 to 9.