CN215884045U - Motor shaft system and stratosphere airship - Google Patents
Motor shaft system and stratosphere airship Download PDFInfo
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- CN215884045U CN215884045U CN202122521115.3U CN202122521115U CN215884045U CN 215884045 U CN215884045 U CN 215884045U CN 202122521115 U CN202122521115 U CN 202122521115U CN 215884045 U CN215884045 U CN 215884045U
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Abstract
This scheme relates to stratospheric airship technical field, discloses a motor shaft system and stratospheric airship, includes: the motor comprises an outer stator component, an inner rotor, a first bearing, a second bearing, a motor shaft, a power system mounting frame and a second bearing supporting component; the outer stator component surrounds the inner rotor, and is provided with a first through hole and a second through hole which are opposite in position; the motor shaft penetrates into the outer stator assembly from the first through hole and penetrates out of the outer stator assembly from the second through hole; the first bearing and the second bearing are both arranged on the motor shaft; the outer ring of the first bearing is fixedly connected with the hole wall of the first through hole, and the inner ring of the first bearing is fixedly connected with the motor shaft; the outer ring of the second bearing is fixedly connected with the second bearing supporting part, and the inner ring of the second bearing is fixedly connected with the motor shaft; the first bearing and the second bearing are spaced apart by a preset distance; the second bearing support component is fixedly connected with the outer stator component through the power system mounting frame. This scheme adopts two atress bearings, reduces the torsion that the primary shaft bore to the life of extension bearing.
Description
Technical Field
The utility model relates to the technical field of stratospheric airships, in particular to a motor shaft system and a stratospheric airship.
Background
The stratospheric airship has very wide military and civil values, and has great application values in aspects such as missile defense, communication, remote sensing, space observation, atmospheric measurement and the like.
The stratospheric airship power system which is researched and designed at present generally adopts a mode of directly driving a propeller by a shafting in order to save weight. However, because the radius of the propeller of the power system of the stratospheric airship is large, the thrust or the tension generated when the propeller rotates and the dynamic unbalance centrifugal force generate alternating radial force, alternating axial force and alternating axial bending moment on a shafting of the power driving device, so that a motor bearing bears extremely large pressure and is subjected to accelerated wear failure.
The conventional stratospheric airship power driving device adopts a radial bearing supporting mode, and the mode cannot play a thrust role in axial thrust or axial tension generated by a propeller. Meanwhile, the axial thrust or the axial tension generated by the propeller and the axial bending moment generated by the dynamic unbalance force can generate great axial torque force for the pivot with smaller span, so that the bearing outer diameter slide way, the bearing inner diameter slide way and the bearing ball support frame are damaged, and the service life of the bearing is shortened.
In order to reduce the influence of the rotating propellers on a shafting, the prior art also adopts a motor and reducer mode to drive the propellers of the stratospheric airship. This type of arrangement, with the addition of a speed reducer, adds weight to the airship drive and reduces its mechanical efficiency. The reduction in mechanical efficiency increases the energy requirements of the stratospheric airship power system for the battery, which is to be avoided as much as possible in the overall top-level design of the stratospheric airship system, and moreover, the shafting design of the speed reducer also needs to take into account the bearing stress mode.
Therefore, there is a need to develop a motor shaft system that can reduce the influence of the force generated by the rotation of the propeller and prolong the life of the shaft system.
The above information disclosed in this background section is only for enhancement of understanding of the background of the utility model and therefore it may contain information that does not constitute prior art that is already known to a person of ordinary skill in the art.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to a motor shaft system and a stratospheric airship that overcome, at least to some extent, one or more of the problems due to the limitations and disadvantages of the related art.
Additional features and advantages of the utility model will be set forth in the detailed description which follows, or may be learned by practice of the utility model.
According to a first aspect of the present invention, there is disclosed a motor shaft system comprising:
the motor comprises an outer stator component, an inner rotor, a first bearing, a second bearing, a motor shaft, a power system mounting frame and a second bearing supporting component;
the outer stator component surrounds the inner rotor, and is provided with a first through hole and a second through hole which are opposite in position; the motor shaft penetrates into the outer stator assembly from the first through hole, is fixedly connected with the inner rotor in the outer stator assembly, and penetrates out of the outer stator assembly from the second through hole;
the first bearing and the second bearing are both arranged on the motor shaft; the outer ring of the first bearing is fixedly connected with the hole wall of the first through hole, and the inner ring of the first bearing is fixedly connected with the motor shaft; the outer ring of the second bearing is fixedly connected with the second bearing supporting part, and the inner ring of the second bearing is fixedly connected with the motor shaft; the first bearing and the second bearing are spaced apart by a preset distance;
the second bearing support component is fixedly connected with the outer stator component through a power system mounting frame.
According to an exemplary embodiment of the present invention, one end of the motor shaft is fixedly connected to the rotating mechanism, and the other end is connected to the second bearing support member through the second bearing.
According to an exemplary embodiment of the utility model, the rotating mechanism is a propeller.
According to an example embodiment of the utility model, the first through hole is closer to the rotation mechanism than the second through hole.
According to an exemplary embodiment of the utility model, the propeller radius is R, 1 meter R < 3.5 meters, the predetermined distance is L, 0.05 XR < L < 0.5 XR.
According to an exemplary embodiment of the present invention, the motor shaft system further includes a flange plate, and the motor shaft is connected to the rotating mechanism through the flange plate.
According to an example embodiment of the utility model, the first bearing comprises a self-aligning bearing or a radial thrust bearing; the second bearing comprises a self-aligning bearing or a radial thrust bearing. The centripetal thrust bearing comprises an angle bearing and a tapered roller bearing.
According to an exemplary embodiment of the utility model, the first bearing is capable of withstanding temperatures of 150 ℃ to 350 ℃. The second bearing is capable of withstanding temperatures of 150 ℃ to 350 ℃.
According to a second aspect of the utility model, the utility model discloses a stratospheric airship, which comprises one or more rotating mechanisms, one or more motor assemblies, one or more motor shafting and a hull;
the motor assemblies are arranged on the boat body, and each motor assembly provides power for rotation of the inner rotor for one motor shaft system;
the rotating mechanism is connected with a motor shaft of a motor shaft system and is driven by the motor shaft to rotate; and the power system mounting rack of the motor shafting is fixedly connected with the boat body.
According to an example embodiment of the utility model, the rotating mechanism is a propeller, each propeller comprising a plurality of blades and a hub; the hub is arranged in the center of the propeller, and one end of each blade is fixedly connected with the hub; the motor shaft system further comprises a flange plate, one end of a motor shaft is fixedly connected with the flange plate, and the motor shaft is fixedly connected with the hub through the flange plate.
The utility model has the beneficial effects that:
according to the utility model, the first bearing and the second bearing are arranged on the motor shaft, so that the span of the two stressed bearings is prolonged, the torsion borne by the first bearing is reduced, and the service lives of the two bearings are prolonged. Meanwhile, the radial bearing is changed into the self-aligning bearing or the centripetal thrust bearing, so that the capability of bearing axial thrust and axial torque of the bearing is improved, the service life of the bearing is further prolonged, and the service life of a shafting is prolonged.
In addition, the first bearing and the second bearing can resist high temperature, so that the motor shaft system can adapt to the continuous work of the bearing at high temperature in the stratosphere environment, and the service life of the shaft system is prolonged.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.
Fig. 1 shows a structural view of a motor shaft system and a propeller of the present invention.
The propeller comprises a propeller body, a propeller shaft, an outer stator assembly, a first bearing, a power system mounting frame, a second bearing supporting component, a power system mounting frame, a motor shaft, an inner rotor, a flange plate, a propeller radius length and a distance L, wherein the propeller shaft is arranged on the propeller shaft, the propeller shaft is arranged on the outer stator assembly, the first bearing is arranged on the outer stator assembly, the power system mounting frame is arranged on the power system mounting frame, the second bearing supporting component is arranged on the 5 second bearing, the second bearing is arranged on the 6 second bearing, the motor shaft is arranged on the motor shaft, the inner rotor is arranged on the 8 inner rotor, the flange plate is arranged on the inner rotor, the propeller radius length is arranged on the R, and the distance L is a preset distance between the first bearing and the second bearing.
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 examples 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 drawings are merely schematic illustrations of the utility model and are not necessarily drawn to scale.
Furthermore, 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 provide a thorough understanding of embodiments of the utility model. One skilled in the relevant art will recognize, however, that the utility model may be practiced without one or more of the specific details, or with other methods, components, steps, and so forth. In other instances, well-known structures, methods, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the utility model.
As a first embodiment of the present invention, an object of the present invention is to disclose a motor shaft system, as shown in fig. 1, comprising: the device comprises an outer stator component 2, an inner rotor 8, a first bearing 3, a second bearing 6, a third bearing, a motor shaft 7, a power system mounting frame 4, a second bearing supporting component 5 and a flange plate 9.
One end of the motor shaft 7 is fixedly connected with the center of the propeller 1 through a flange 9, and the other end is connected with the second bearing support part 5 through the second bearing 6. The motor shaft 7 runs through the outer stator assembly 2, specifically, the outer stator assembly 2 is disposed between the propeller 1 and the second bearing support member 5, the outer stator assembly 2 surrounds the inner rotor 8, and two through holes with opposite positions, namely a first through hole and a second through hole, are disposed on the outer stator assembly 2. The first through-hole is closer to the propeller 1 than the second through-hole, which is on the left side and on the right side in fig. 1. The motor shaft 7 penetrates the outer stator assembly 2 from the first through hole, is fixedly connected with the central part of the inner rotor 8 in the outer stator assembly 2, and penetrates out of the outer stator assembly 2 from the second through hole. The inner rotor 8 is driven by the motor to rotate and drives the motor shaft 7 to rotate, and the motor shaft 7 drives the propeller 1 to rotate. The rotating mechanism of the scheme adopts the propeller 1, and other similar rotating mechanisms can be replaced according to requirements in practical application.
The first bearing 3 and the second bearing 6 are both arranged on the motor shaft 7. The outer ring of the first bearing 3 is fixedly connected with the hole wall of the first through hole, and the inner ring is fixedly connected with the motor shaft 7. The outer ring of the second bearing 6 is fixedly connected with the second bearing support part 5, and the inner ring is fixedly connected with the motor shaft 7. The first bearing 3 and the second bearing 6 are spaced apart by a predetermined distance. The radius of the propeller 1 is R, R is more than or equal to 1 m and less than or equal to 3.5 m, the preset distance is L, and L is more than or equal to 0.05 multiplied by R and less than or equal to 0.5 multiplied by R. By determining the ratio relationship between the propeller radius R and the span L of the two bearings, the larger the ratio of R to L, the poorer the ability of the bearings to bear axial bending moment. If the predetermined distance is too short, the axial torque on the first bearing 3 is increased due to a large bending moment, which increases the bearing load and shortens the bearing life; if the predetermined distance is too long, the weight of the motor may be increased to the detriment of reducing the overall weight of the stratospheric airship. Two bearings are arranged on the motor shaft 7, the preset distance between the two bearings is increased to be 0.05 to 0.5 times of the radius of the propeller 1, the installation span of the stressed bearing is enlarged, and the stressed bearing can correspond to the radial force, the axial force and the axial torsion which are generated to a power system by the rotation of the propeller 1. The increase in bearing support point span thereby reduces the axial torque of the bearing. The weight of the power driving device can be reduced as much as possible, the efficiency of the power driving device can be increased, and the safety of a shaft system can be ensured. The first bearing 3 comprises a self-aligning bearing or a radial thrust bearing. Because the first bearing 3 is stressed greatly, the first bearing 3 can be adjusted into a double-row or double-row bearing according to the load, and the rolling bodies in the bearing can also be adjusted into cylindrical rolling bodies according to the load. The second bearing 6 comprises a self-aligning bearing or a radial thrust bearing. The centripetal thrust bearing comprises an angle bearing and a tapered roller bearing. The self-aligning bearing and the centripetal thrust bearing can improve the capability of bearing axial push/pull force and axial torsion, further reduce the pressure of the bearing and prolong the service life of the bearing and even the whole shafting. In addition, because the motor shaft system is mainly installed on an airship, the working area of the airship is generally a stratosphere, the stratosphere atmospheric density is about 1/14 of the sea level atmospheric density, and the air flow heat dissipation is poor, so that heat generated by the high-speed rotation of the motor bearing is not easy to dissipate to form bearing high temperature, and the bearing is easy to wear after the temperature of the bearing exceeds 100 ℃ generally, and the service life is seriously influenced, therefore, the first bearing 3 and the second bearing 6 are both high-temperature-resistant bearings and can bear the temperature of 150 ℃ to 350 ℃, so that the high-temperature resistance of the bearing in the stratosphere environment is improved, and the service life of the bearing and even the whole shaft system is prolonged. The high-temperature bearing can be made by continuous high-temperature quenching treatment according to different types and different heat-resistant temperatures.
The second bearing support member 5 is fixedly connected with the power system mounting bracket 4, and the power system mounting bracket 4 is fixedly connected with the outer stator assembly 2, so that the second bearing support member 5 is fixedly connected with the outer stator assembly 2.
When making screw 1 rotatory, outer rotor assembly 2 and second bearing supporting component 5 all pass through driving system installing support 4 and hull fixed connection, and screw 1 is including under the rotation of rotor 8, along with the motor shaft 7 is rotatory, and the radial force, the axial force and the axial bending moment of screw 1 have reduced the effect to whole shafting because of the existence of first bearing, second bearing, and then make the life-span extension of whole shafting, factor of safety promotes.
As a second embodiment of the present invention, an object of the present invention is to disclose a stratospheric airship including: a plurality of motor shafting, a plurality of screw 1, a plurality of motor components and hull of the first embodiment.
The motor components are arranged on the boat body, and each motor component provides power for rotation of the inner rotor for one motor shaft system.
The propeller 1 is connected with a motor shaft 7 of a motor shaft system and is driven by the motor shaft 7 to rotate; and the power system mounting rack 4 of the motor shafting is fixedly connected with the boat body.
Each propeller 1 comprises a plurality of blades and a hub; the hub is arranged in the center of the propeller 1, and one end of each blade is fixedly connected with the hub; one end of a motor shaft 7 of the motor shaft system is fixedly connected with the flange plate 9; the motor shaft 7 is fixedly connected with the hub through a flange 9.
The motor shafting of this scheme of adoption can reduce the atress of shafting and improve thereby the life-span of bearing heat capacity, alleviates the weight of dirigible simultaneously.
As a third embodiment of the present invention, the object of the present invention is to disclose a stratospheric airship whose structure is substantially the same as that of the second embodiment, except that the propeller 1 of the airship of the third embodiment does not include a hub, and the flange 9 is fixedly connected directly to one end of each blade.
Other embodiments of the utility model will be apparent to those skilled in the art from consideration of the specification and practice of the utility model disclosed herein. This application is intended to cover any variations, uses, or adaptations of the utility model following, in general, the principles of the utility model and including such departures from the present disclosure as come within known or customary practice within the art to which the utility model pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the utility model being indicated by the following claims.
It will be understood that the utility model is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the utility model is limited only by the appended claims.
Claims (9)
1. An electric machine shaft assembly, comprising:
the motor comprises an outer stator component, an inner rotor, a first bearing, a second bearing, a motor shaft, a power system mounting frame and a second bearing supporting component;
the outer stator component surrounds the inner rotor, and is provided with a first through hole and a second through hole which are opposite in position; the motor shaft penetrates into the outer stator assembly from the first through hole, is fixedly connected with the inner rotor in the outer stator assembly, and penetrates out of the outer stator assembly from the second through hole;
the first bearing and the second bearing are both arranged on the motor shaft; the outer ring of the first bearing is fixedly connected with the hole wall of the first through hole, and the inner ring of the first bearing is fixedly connected with the motor shaft; the outer ring of the second bearing is fixedly connected with the second bearing supporting part, and the inner ring of the second bearing is fixedly connected with the motor shaft; the first bearing and the second bearing are spaced apart by a preset distance;
the second bearing support component is fixedly connected with the outer stator component through a power system mounting frame.
2. The motor shafting of claim 1, wherein one end of the motor shaft is fixedly connected with the rotating mechanism, and the other end is connected with the second bearing support component through the second bearing.
3. The electrical machine shafting as claimed in claim 2, wherein said rotating mechanism is a propeller.
4. The electric machine shafting as claimed in claim 3, wherein said propeller radius is R, R is 1 m or less and R is 3.5 m or less, then said predetermined distance is L, 0.05 XR or less and L is 0.5 XR or less.
5. The motor shafting of claim 2, further comprising a flange, wherein the motor shaft is connected to the rotating mechanism through the flange.
6. The electric machine shaft system of claim 1, wherein the first bearing comprises a self-aligning bearing or a radial thrust bearing; the second bearing comprises a self-aligning bearing or a radial thrust bearing.
7. The electric machine shafting as claimed in claim 1, wherein said first bearing is capable of withstanding temperatures of 150 ℃ to 350 ℃; the second bearing is capable of withstanding temperatures of 150 ℃ to 350 ℃.
8. A stratospheric airship comprising one or more rotating mechanisms, one or more motor assemblies, one or more motor shafting according to any one of claims 1 to 7, and a hull;
the motor assemblies are arranged on the boat body, and each motor assembly provides power for rotation of the inner rotor for one motor shaft system;
and the rotating mechanism is connected with a motor shaft of a motor shaft system and rotates under the driving of the motor shaft, and a power system mounting frame of the motor shaft system is fixedly connected with the boat body.
9. The stratospheric airship of claim 8, wherein the rotating mechanism is a plurality of propellers, each propeller comprising a plurality of blades and a hub; the hub is arranged in the center of the propeller, and one end of each blade is fixedly connected with the hub; the motor shaft system further comprises a flange plate, one end of a motor shaft is fixedly connected with the flange plate, and the motor shaft is fixedly connected with the hub through the flange plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122521115.3U CN215884045U (en) | 2021-10-19 | 2021-10-19 | Motor shaft system and stratosphere airship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122521115.3U CN215884045U (en) | 2021-10-19 | 2021-10-19 | Motor shaft system and stratosphere airship |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215884045U true CN215884045U (en) | 2022-02-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122521115.3U Active CN215884045U (en) | 2021-10-19 | 2021-10-19 | Motor shaft system and stratosphere airship |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215884045U (en) |
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2021
- 2021-10-19 CN CN202122521115.3U patent/CN215884045U/en active Active
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