CN112141326A - Coaxial double-oar flying device - Google Patents
Coaxial double-oar flying device Download PDFInfo
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- CN112141326A CN112141326A CN202010851682.2A CN202010851682A CN112141326A CN 112141326 A CN112141326 A CN 112141326A CN 202010851682 A CN202010851682 A CN 202010851682A CN 112141326 A CN112141326 A CN 112141326A
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- oar
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C27/00—Rotorcraft; Rotors peculiar thereto
- B64C27/04—Helicopters
- B64C27/08—Helicopters with two or more rotors
- B64C27/10—Helicopters with two or more rotors arranged coaxially
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C27/00—Rotorcraft; Rotors peculiar thereto
- B64C27/04—Helicopters
- B64C27/12—Rotor drives
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C27/00—Rotorcraft; Rotors peculiar thereto
- B64C27/54—Mechanisms for controlling blade adjustment or movement relative to rotor head, e.g. lag-lead movement
- B64C27/58—Transmitting means, e.g. interrelated with initiating means or means acting on blades
- B64C27/59—Transmitting means, e.g. interrelated with initiating means or means acting on blades mechanical
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- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
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Abstract
The application provides a coaxial double-oar flying device includes: a support; a first shaft mounted to the bracket; a second shaft passing through the first shaft and mounted to the bracket; the first driven wheel is connected to the first shaft; the second driven wheel is connected to the second shaft; the first propeller is connected to the first shaft; a second propeller connected to the second shaft; a drive motor; the motor is connected with the first driving wheel and the second driving wheel; the first transmission device is connected with the first driven wheel and the first driving wheel, and the second transmission device is connected with the second driven wheel and the second driving wheel, so that the first propeller and the second propeller rotate through power transmission to generate a lifting force, and in addition, the anti-twisting effect and the gyroscopic effect are reduced.
Description
Technical Field
The application relates to the field of aircrafts, in particular to a coaxial double-oar flight device.
Background
At present, an electric unmanned aerial vehicle system in China is basically in a motor direct-drive single-propeller mode, the requirement on motor torque is high, the optimization idea of the power system of the unmanned aerial vehicle is to continuously optimize the structure of a motor so as to obtain higher efficiency, and the bottleneck of driving force and efficiency in unit weight is generated. In addition, the single-paddle direct drive has the anti-torque and gyroscopic effects, and in practical use, the tension line of the power system relative to the airplane needs to be demonstrated and tested, so that part of the anti-torque can be adjusted and counteracted through the tension line, and then the relative stability is obtained. However, due to the structural form, the gyro effect cannot be eliminated and only partial reverse torsion can be counteracted by any adjustment, and the airplane cannot obtain more relative stability.
Therefore, there is a need for an unmanned aerial vehicle power plant that is more stable, has higher system efficiency, has greater cruising ability, and can eliminate the tendency of flight.
Disclosure of Invention
The application provides a coaxial double-oar flying device can realize that coaxial double-oar produces drive power, has higher system efficiency and duration.
Additional features and advantages of the disclosure will be set forth in the detailed description which follows, or in part will be obvious from the description, or may be learned by practice of the disclosure.
According to an aspect of the present application, there is provided a coaxial twin-oar flying device comprising: a support; a first shaft mounted to the bracket; a second shaft passing through the first shaft and mounted to the bracket; a first driven wheel and a second driven wheel; the first driven wheel is connected to the first shaft; the second driven wheel is connected to the second shaft; the first propeller is connected to the first shaft, and the first shaft drives the first propeller to generate a lifting force; the second propeller is connected to the second shaft, and the second shaft drives the second propeller to generate a lifting force; a drive motor; a first drive wheel and a second drive wheel coupled to the motor; a first transmission and a second transmission; the first transmission device is connected with the first driven wheel and the first driving wheel, and the second transmission device is connected with the second driven wheel and the second driving wheel.
Therefore, the driving motor drives the first propeller and the second propeller to rotate through the first driving wheel, the second driving wheel, the first transmission device, the second transmission device, the first driven wheel, the second driven wheel, the first shaft and the second shaft, and generates lifting force.
According to some embodiments, the first propeller and the second propeller are configured to counter-rotate with respect to each other, thereby reducing anti-twist and gyroscopic effects.
According to some embodiments, the bracket comprises a first mounting plate, a second mounting plate, a third mounting plate, at least two first uprights, at least two second uprights, wherein
The at least two first upright posts connect the first mounting plate with the second mounting plate;
the at least two second upright posts are connected with the second mounting plate and the third mounting plate;
the second mounting plate is provided with a first mounting hole and a fourth mounting hole, the first mounting plate is provided with a second mounting hole and a third mounting hole, and the first mounting hole and the second mounting hole are coaxial; the first mounting hole is connected with the first shaft, and the second mounting hole is connected with the second shaft; the first driving wheel and the second driving wheel are coaxially connected between the third mounting hole and the fourth mounting hole.
According to some embodiments, the device further comprises a first flange, a second flange and a third shaft, wherein the first flange is arranged on the first shaft and is fixedly connected with the first driven wheel; the second flange is arranged on the second shaft and is fixedly connected with the second driven wheel; and the check ring is arranged between the first flange and the second flange so as to keep the first flange and the second flange at a distance.
According to some embodiments, the first and second drive wheels are coaxially disposed between the first and second mounting plates and configured for co-directional movement.
According to some embodiments, the second transmission is a double-toothed belt. The first mounting plate is provided with a first long hole; the coaxial double-oar flying device further comprises a synchronizing wheel, wherein the synchronizing wheel shaft is arranged in the first long hole and used for adjusting the tension force of the double-sided toothed belt.
According to some embodiments, the first driven wheel directly drives the first driven wheel; the second driving wheel indirectly drives the second driven wheel through the synchronous wheel, so that the first driven wheel and the second driven wheel move in opposite directions.
According to some embodiments, the first transmission is a single-toothed belt. The second mounting plate is provided with a second long hole; the coaxial double-oar flying device further comprises a tensioning wheel, and the tensioning wheel shaft is arranged in the second long hole and used for adjusting the tensioning force of the single-sided toothed belt.
According to the embodiment of the application, the reverse motion of the two propellers is realized through the driving mechanism with the coaxial double propellers, so that the driving mechanism achieves the purposes of increasing the driving efficiency and reducing the anti-twisting and gyroscopic effects.
Drawings
The above and other objects, features and advantages of the present application will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.
Fig. 1 shows a perspective view of a coaxial twin-paddle drive mechanism according to an exemplary embodiment of the present application.
Fig. 2 shows a perspective view of a stent according to an example embodiment of the present application.
FIG. 3 shows a bracket bearing mounting schematic according to an example embodiment of the present application.
Fig. 4 shows a coaxial twin-paddle drive mechanism assembly schematic according to an example embodiment of the present application.
FIG. 5 shows a driven wheel mounting schematic according to an example embodiment of the present application.
Fig. 6 illustrates a perspective view of a first shaft structure according to an example embodiment of the present application.
Fig. 7 illustrates a perspective view of a second shaft structure according to an example embodiment of the present application.
Fig. 8 shows a schematic view of a tensioning arrangement according to an exemplary embodiment of the present application.
Fig. 9 shows a schematic view of a drive motor according to an example embodiment of the present application.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals denote the same or similar parts in the drawings, and thus, a repetitive description thereof will be omitted.
The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the embodiments of the disclosure can be practiced without one or more of the specific details, or with other means, components, materials, devices, or the like. In such cases, well-known structures, methods, devices, implementations, materials, or operations are not shown or described in detail.
The flow charts shown in the drawings are merely illustrative and do not necessarily include all of the contents and operations/steps, nor do they necessarily have to be performed in the order described. For example, some operations/steps may be decomposed, and some operations/steps may be combined or partially combined, so that the actual execution sequence may be changed according to the actual situation.
The terms "first," "second," and the like in the description and claims of the present application and in the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
At present, the domestic electric unmanned aerial vehicle system is basically in a motor single-propeller direct-drive form. The single-paddle direct drive often has problems of insufficient power and efficiency. In addition, the single-paddle direct drive can generate the anti-torque and gyroscopic effects, and the tension line of the power system needs to be demonstrated and tested in practical use.
And coaxial double-oar self characteristics need not to set up the pull wire, can zero angle installation, can provide better stability and for directly driving the screw efficiency of form higher for the flying device for unmanned aerial vehicle operation such as taking photo by plane and taking photo by plane can provide higher continuation of the journey for flying device.
Therefore, the development of a coaxial double-paddle driving machine constitutes a technical problem to be solved urgently by those in the art. To this end, the present application proposes a coaxial double-paddle drive mechanism. According to the technical concept of the application, the power of the coaxial double-paddle is improved and the cruising ability of the coaxial double-paddle is improved by utilizing the driving form of the coaxial double-paddle.
The technical solution of the present application will be described in detail below with reference to the accompanying drawings.
As shown, fig. 1 shows a perspective view of a coaxial twin-screw drive mechanism according to an exemplary embodiment of the present application.
As shown in fig. 1, the coaxial double-paddle drive mechanism of the present application includes a bracket, a first shaft 200, and a second shaft 300.
The bracket includes a first mounting hole 121 and a second mounting hole 111. A first bearing 125 is arranged in the first mounting hole 121, and a second bearing 113 is arranged in the second mounting hole 111;
the first shaft 200 has a through hole provided in the axial direction, and the first shaft 200 is provided in the first mounting hole 121.
According to some embodiments, a third bearing is disposed in the through hole, and the third bearing can enable the second shaft 300 to be fixedly connected to the first shaft 200 for arbitrary rotation.
The second shaft 300 is disposed in the second mounting hole 111, and the second shaft 300 passes through the through hole.
According to an exemplary embodiment of the application, the coaxial double-bladed drive mechanism further comprises a driven wheel. The driven wheels may include a first driven wheel 220 and a second driven wheel 320, and the first driven wheel 220 is coaxially disposed with the second driven wheel 320. The first driven wheel 220 is fixed to the first shaft 200 by a first flange 210, and the second driven wheel 320 is fixed to the second shaft 300 by a second flange 310.
According to the flying device of this application, adopt driving motor to drive the double-oar, reduce unmanned aerial vehicle interference item and development item, increase a small amount of weight when guaranteeing structural strength. Taking the currently developed 10KG power pack as an example, 2218 paddle, 42V driving, the current is about 65A. Compared with the current of about 80A of the current of the existing direct-drive system, the coaxial double-propeller system has obvious advantages of efficiency and endurance.
Fig. 2 shows a perspective view of a stent according to an example embodiment of the present application.
FIG. 3 shows a bracket bearing mounting schematic according to an example embodiment of the present application.
As shown in fig. 2 and 3, the bracket includes a first mounting plate 110, a second mounting plate 120, a third mounting plate 130, a plurality of first studs 140, and a plurality of second studs 150, the first mounting plate 110 being connected to the second mounting plate 120 through the plurality of first studs 140, and the second mounting plate 120 being connected to the third mounting plate 130 through the plurality of second studs 150.
According to an exemplary embodiment of the present application, the first mounting hole 121 is provided to the second mounting plate 120, the second mounting hole 111 is provided to the first mounting plate 110, and the first mounting hole 121 is coaxially provided with the second mounting hole 111.
The second mounting plate 120 is provided with a first shaft fixing sleeve 123, the first mounting hole 121 penetrates through the first shaft fixing sleeve 123, and the first mounting hole is provided with a first bearing 125.
The first mounting plate 110 has a second mounting hole 111, and a second bearing 113 is disposed in the second mounting hole 111. When the coaxial double-paddle driving mechanism is assembled, the first mounting plate 110 and the second mounting plate 120 are fixed to the plurality of first columns 140 through the plurality of first columns 140 and the screw threads arranged in the plurality of first columns 140. And then the third mounting plate 130 and the second mounting plate 120 are fixed to the plurality of second columns 150 through the plurality of second columns 150 and the screw threads arranged in the plurality of second columns 150.
After the bracket is assembled, the first shaft fixing sleeve 123 is screwed and fixed to the second mounting plate 120, and the first bearing 125 is installed in the first mounting hole 121 penetrating through the first shaft fixing sleeve 123 and the second mounting plate 120, so that the first shaft can rotate arbitrarily. The second bearing 113 is fixed to the second mounting hole 111 of the first mounting plate 110 so that the second shaft can be arbitrarily rotated.
Fig. 4 shows a coaxial twin-paddle drive mechanism assembly schematic according to an example embodiment of the present application.
FIG. 5 shows a driven wheel mounting schematic according to an example embodiment of the present application.
As shown in fig. 4 and 5, a first shaft 200 is mounted on the bracket, the first shaft 200 passes through the first mounting hole 121, the first shaft 200 has a through hole in an axial direction, and the second shaft 300 passes through the through hole and the second mounting hole 111 of the first mounting plate 110 at the same time.
The coaxial double-paddle driving mechanism further comprises a first flange 210 and a second flange 310, wherein the first flange 210 is arranged on the first shaft 200, and the second flange 310 is arranged on the second shaft 300.
According to an exemplary embodiment of the present application, a first driven pulley 220 is provided to the first flange 210, and a second driven pulley 320 is provided to the second flange 310. After the first flange 210 is mounted to the first shaft 200 and the second flange 310 is mounted to the second shaft 300. The first driven wheel 220 is mounted to the first flange 210 by means of a screw, and the second driven wheel 320 is mounted to the second flange 310 by means of a screw.
According to some exemplary embodiments, to maintain a certain gap between the first driven wheel 220 and the second driven wheel 320, a check ring 315 is disposed between the first flange 210 and the second flange 310.
Fig. 6 illustrates a perspective view of a first shaft structure according to an example embodiment of the present application.
Fig. 7 illustrates a perspective view of a second shaft structure according to an example embodiment of the present application.
As shown in fig. 6 and 7, the first shaft 200 has an axial through hole 215, and the second shaft 300 can pass through the through hole 215.
According to an example embodiment of the present application, the first flange 210 and the first driven wheel 220 may be assembled with the first shaft 200, and then mounted on a bracket, the second flange 310 and the second driven wheel 320 may be assembled with the second shaft 300, and then the second shaft 300 may pass through the through hole.
According to some exemplary embodiments, a sixth bearing 325 is disposed at a position where the end of the first shaft 200 is engaged with the second shaft 300, so that the first shaft 200 and the second shaft 300 can freely rotate relatively.
According to some example embodiments, the first shaft 200 and the second shaft 300 are both high-strength lightweight materials, for example, the first shaft 200 may be a hollow aluminum material with an inner diameter of 16mm, and the second shaft 300 may be an alloy material with an outer diameter of 8mm, and the disclosure does not specifically limit the materials thereof. The first shaft 200 and the second shaft 300 may be provided with a third bearing connection, which may be of the MF128-ZZ type. Of course, the specific type is not limited in the embodiments of the present disclosure.
The flying device provided by the application and comprising the coaxial double-oar driving mechanism comprises the coaxial double-oar driving mechanism, and further comprises a driving wheel, a driving motor 700, a transmission device and a propeller.
The driving wheels are disposed on the bracket, and the driving wheels include a first driving wheel 410 and a second driving wheel 420. Of course, the number of the driving wheels is not limited in the present disclosure. The driving motor 700 has a driving shaft 710, and the driving shaft 710 simultaneously passes through the first driving wheel 410 and the second driving wheel 420.
Fig. 9 shows a schematic view of a drive motor according to an example embodiment of the present application.
Referring to fig. 9, the flying apparatus of the present application employs a drive motor to provide power. The first and second drive wheels 410 and 420 are coaxially disposed between the first and second mounting plates 110 and 120, and the drive motor 700 has a drive shaft 710, the drive shaft 710 passing through both the first and second drive wheels 410 and 420.
According to an exemplary embodiment of the present application, the first mounting plate 110 has a third mounting hole 115 thereon, and the second mounting plate 120 has a fourth mounting hole 124 thereon, the third mounting hole 115 being coaxially disposed with the fourth mounting hole 124.
The first driving wheel 410 and the second driving wheel 420 have a hollow structure, and the driving shaft 710 passes through the third mounting hole 115, the second driving wheel 420, the first driving wheel 410, and the fourth mounting hole 124 in sequence.
According to some exemplary embodiments, the third mounting hole 115 is provided with a fourth bearing, and the fourth mounting hole 124 is provided with a fifth bearing, and the driving shaft passes through the fourth and fifth bearings at the same time. The fourth bearing and the fifth bearing allow the first drive wheel 410 and the second drive wheel 420 to rotate arbitrarily.
The transmission device includes a first transmission device and a second transmission device (not shown), the first transmission device includes a single-sided toothed belt, the second transmission device includes a double-sided toothed belt, the first transmission device connects the first driving wheel 410 and the first driven wheel 220, and the second transmission device connects the second driving wheel 420, the second driven wheel 320 and the synchronizing wheel 500. The synchronizing wheel 500 is disposed at the bracket.
The first transmission device and the second transmission device can achieve the reverse rotation of the first driven wheel 220 and the second driven wheel 320 through different winding methods, for example, the first transmission device adopts a single-sided toothed belt, and the first driving wheel 410 and the first driven wheel 220 are both in contact with the inner surface of the single-sided toothed belt. The second transmission device adopts a double-sided toothed belt, the synchronizing wheel 500 and the second driven wheel 320 are both in contact with the inner surface of the double-sided toothed belt, and the second driving wheel 420 is in contact with the inner surface of the double-sided toothed belt. The first driven wheel 220 and the second driven wheel 320 can rotate in opposite directions when the first driving wheel 410 and the second driving wheel 420 rotate in the same direction.
As shown, fig. 8 shows a schematic view of a tensioning arrangement according to an example embodiment of the present application.
As shown in fig. 8, the first mounting plate 110 has a first elongated hole 114, the second mounting plate 120 has a second elongated hole 126, and the synchronizing wheel 500 is fixed to the first mounting plate 110 through the first elongated hole 114.
According to an exemplary embodiment of the present application, a tension pulley 600 is provided on the second mounting plate, and the tension pulley 600 is fixed to the second mounting plate 120 through the second long hole 126.
A first transmission is provided between the first driving wheel 410 and the first driven wheel 220, and a second transmission is provided between the second driving wheel 420, the second driven wheel 320, and the synchronizing wheel 500.
For example, the first transmission device includes a single-sided toothed belt, the first driving pulley 410 and the first driven pulley 220 contact an inner surface of the single-sided toothed belt, the first driven pulley 220 is rotated by the first driving pulley 410, the tension pulley 600 contacts an outer surface of the single-sided toothed belt, and the tension of the single-sided toothed belt is adjusted by adjusting a position of the tension pulley 600 in the second elongated hole 126.
For example, the second transmission means includes a double-toothed belt, the second driving pulley 420 is in contact with an outer surface of the double-toothed belt, and the second driven pulley 320 and the synchronizing pulley 500 are in contact with an inner surface of the double-toothed belt. The tension of the double-toothed belt is adjusted by adjusting the position of the timing wheel 500 in the first long hole 114.
According to an example embodiment of the present application, the first shaft 200 and the second shaft 300 may be rotated in opposite directions by different winding methods of the single-sided toothed belt and the double-sided toothed belt. And compared with a direct drive system, the system maintenance and use convenience are not reduced, the main maintenance item is only the synchronous belt, and the replacement is quick and convenient.
According to some exemplary embodiments, the speed ratio of the driving wheel to the driven wheel may be adjusted to adjust the rotation speed of the first shaft 200 and the second shaft 300, for example, the reduction ratio is the ratio of the diameter of the driven wheel to the diameter of the driving wheel, and may be set to 4:1, although the disclosure does not limit the specific value of the reduction ratio.
The flight device further comprises a first propeller, and the first propeller is arranged on the first shaft; a second propeller disposed at the second shaft. Of course, the present disclosure does not limit the size, shape of the propeller. After the first shaft 200 and the second shaft 300 are installed, the ends of the first shaft 200 and the second shaft 300 are provided with screw structures, and a propeller may be installed at the ends of the first shaft 200 and the second shaft 300. The first propeller and the second propeller rotate in opposite directions and generate lifting force at the same time, and finally stable double-propeller driving is achieved.
According to the flight device, the coaxial double-oar form is utilized, the anti-torsion and the gyro effect are reduced, and better stability can be provided for the flight device.
The embodiments of the present application are described in detail, and the principles and embodiments of the present application are described herein using specific examples, which are provided only to help understand the method and the core idea of the present application. Meanwhile, a person skilled in the art should, according to the idea of the present application, change or modify the embodiments and applications of the present application based on the scope of the present application. In view of the above, the description should not be taken as limiting the application.
Claims (10)
1. A coaxial, twin-bladed flying device, comprising:
a support;
a first shaft mounted to the bracket;
a second shaft passing through the first shaft and mounted to the bracket;
a first driven wheel and a second driven wheel; the first driven wheel is connected to the first shaft; the second driven wheel is connected to the second shaft;
the first propeller is connected to the first shaft, and the first shaft drives the first propeller to generate a lifting force;
the second propeller is connected to the second shaft, and the second shaft drives the second propeller to generate a lifting force;
a drive motor;
a first drive wheel and a second drive wheel coupled to the motor;
a first transmission and a second transmission; the first transmission device is connected with the first driven wheel and the first driving wheel, and the second transmission device is connected with the second driven wheel and the second driving wheel, so that the driving motor drives the first propeller and the second propeller to rotate through the first driving wheel, the second driving wheel, the first transmission device, the second transmission device, the first driven wheel, the second driven wheel, the first shaft and the second shaft, and the lifting force is generated.
2. The coaxial twin-oar flying device of claim 1, wherein the first propeller and the second propeller are configured to counter-rotate with respect to each other, thereby reducing anti-twist and gyroscopic effects.
3. The coaxial twin-oar heeling apparatus of claim 1, wherein the bracket comprises a first mounting plate, a second mounting plate, a third mounting plate, at least two first uprights, at least two second uprights, wherein
The at least two first upright posts connect the first mounting plate with the second mounting plate;
the at least two second upright posts are connected with the second mounting plate and the third mounting plate;
the second mounting plate is provided with a first mounting hole and a fourth mounting hole, the first mounting plate is provided with a second mounting hole and a third mounting hole, and the first mounting hole and the second mounting hole are coaxial; the first mounting hole is connected with the first shaft, and the second mounting hole is connected with the second shaft; the first driving wheel and the second driving wheel are coaxially connected between the third mounting hole and the fourth mounting hole.
4. The coaxial twin-oar flying device of claim 1, further comprising:
the first flange is arranged on the first shaft and is fixedly connected with the first driven wheel;
the second flange is arranged on the second shaft and is fixedly connected with the second driven wheel;
and the check ring is arranged between the first flange and the second flange so as to keep the first flange and the second flange at a distance.
5. The coaxial twin-paddle flying device of claim 3, wherein the first and second drive wheels are coaxially disposed between the first and second mounting plates and configured for co-directional movement.
6. The coaxial twin-oar flying device of claim 3, wherein the second transmission is a double-sided toothed belt.
7. The coaxial twin-oar flying device of claim 6,
the first mounting plate is provided with a first long hole;
the coaxial double-oar flying device further comprises a synchronizing wheel, wherein the synchronizing wheel shaft is arranged in the first long hole and used for adjusting the tension force of the double-sided toothed belt.
8. The coaxial twin-oar flying device of claim 7, wherein the first drive wheel directly drives the first driven wheel; the second driving wheel indirectly drives the second driven wheel through the synchronous wheel, so that the first driven wheel and the second driven wheel move in opposite directions.
9. The coaxial twin-oar flying device of claim 3 wherein the first transmission is a single-sided toothed belt.
10. The coaxial twin-oar flying device of claim 9,
the second mounting plate is provided with a second long hole;
the coaxial double-oar flying device further comprises a tensioning wheel, and the tensioning wheel shaft is arranged in the second long hole and used for adjusting the tensioning force of the single-sided toothed belt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010851682.2A CN112141326A (en) | 2020-08-21 | 2020-08-21 | Coaxial double-oar flying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010851682.2A CN112141326A (en) | 2020-08-21 | 2020-08-21 | Coaxial double-oar flying device |
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| CN112141326A true CN112141326A (en) | 2020-12-29 |
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| CN202010851682.2A Pending CN112141326A (en) | 2020-08-21 | 2020-08-21 | Coaxial double-oar flying device |
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| FR3085349A1 (en) * | 2018-09-03 | 2020-03-06 | Safran Transmission Systems | MAIN TRANSMISSION BOX FOR CONTRAROTATING HELICOPTER |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008094277A (en) * | 2006-10-12 | 2008-04-24 | Osaka Prefecture Univ | Double reversal rotation impeller machine |
| US20150060596A1 (en) * | 2013-09-04 | 2015-03-05 | Sikorsky Aircraft Corporation | Torque split gearbox for rotary wing aircraft |
| KR101545082B1 (en) * | 2014-03-12 | 2015-08-24 | 울산대학교 산학협력단 | Power transmission apparatus for coaxial helicopters |
| CN206502014U (en) * | 2017-01-24 | 2017-09-19 | 浙江水利水电学院 | A kind of single duct engine |
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| FR3085349A1 (en) * | 2018-09-03 | 2020-03-06 | Safran Transmission Systems | MAIN TRANSMISSION BOX FOR CONTRAROTATING HELICOPTER |
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