CN212099307U - Coaxial propeller power system, coaxial double-propeller underwater propeller and aircraft - Google Patents
Coaxial propeller power system, coaxial double-propeller underwater propeller and aircraft Download PDFInfo
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- CN212099307U CN212099307U CN202020693525.9U CN202020693525U CN212099307U CN 212099307 U CN212099307 U CN 212099307U CN 202020693525 U CN202020693525 U CN 202020693525U CN 212099307 U CN212099307 U CN 212099307U
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Abstract
The utility model provides a coaxial propeller power system, a coaxial double-propeller underwater propeller and an aircraft, which relate to the technical field of underwater propellers and solve the problem that the existing underwater propeller does not have a coaxial double-propeller power system, wherein the coaxial propeller power system comprises a first paddle driving system and a second paddle driving system; the first blade driving system comprises an upstream driving motor and a first blade which are coaxially arranged, and the upstream driving motor is in transmission connection with the first blade; the second blade driving system comprises a downstream driving motor and a second blade which are coaxially arranged, and the downstream driving motor is in transmission connection with the second blade; the upstream driving motor and the downstream driving motor are coaxially arranged and fixedly connected. The underwater propeller and the aircraft both adopt the coaxial propeller power system, so that the self-rotation of the propeller along the rotating direction of the blades can be counteracted, and better thrust is obtained while better motion precision and more stable posture are obtained.
Description
Technical Field
The utility model relates to an underwater propulsor technical field, specific theory, coaxial propeller driving system and adopt this coaxial propeller driving system's coaxial double-oar underwater propulsor and coaxial double-oar aircraft.
Background
The propeller is a core component in current underwater equipment, including underwater robots and underwater power-assisted equipment, and the performance of the propeller is directly related to the motion performance of the equipment.
The propeller mainly comprises three or more blades, a motor, a driving circuit, a flow channel and a shell. Because the driving force is generated by the motor driving the paddle to rotate and cut water, the torque in the same direction as the rotating direction of the paddle can be formed in the rotating process of the motor, and the torque can force the propeller to spin along the rotating direction of the paddle in continuous operation. Such spin can affect the accuracy of the device motion and attitude stabilization. For a propeller placed on a rigid structure, the structure is stressed by a large spin torque, and mechanical fatigue of the structure is more likely to be caused.
Coaxial twin-screw technology has found widespread use in aircraft, particularly in propeller aircraft. Coaxial twin-propeller technology is mature on helicopters, especially offshore helicopters. The scheme is characterized in that two layers of propellers are sequentially arranged on a main shaft, when the airplane works, the two layers of propellers rotate simultaneously but the rotating directions are opposite, the propellers generate a set of reverse torques simultaneously, and the torques caused by the rotation of the two layers of blades are offset. Meanwhile, the upper layer of blades pre-compress the lower layer of input gas when rotating, so that additional air suction amount is brought to the lower layer of blades, and the lift force is improved. But the shortcoming is that the scheme adopts an engine, and power is proportionally distributed to two layers of blades through structures such as gears, transmission shafts and the like. The advantage is that because the upper layer of blades are pre-compressed, the lifting/pushing force generated by the lower layer of blades is often greater than that of the upper layer of blades, so that the torques of the upper layer and the lower layer of blades cannot be completely offset, and the transmission system of the scheme can be provided with a gearbox and other structures for adjusting the rotating speeds of the upper layer and the lower layer. For blades of an airplane and the like which operate in the air, the transmission structure can be effectively maintained and replaced in the air, so that the structure can be allowed to be more complex. However, if the technology is directly or slightly improved for the underwater propeller, the heavy mechanical transmission structure causes a great deal of buoyancy loss for underwater equipment, and the structure which is usually metal must be strictly preserved in the seawater environment, so that the scheme cannot be directly applied to the underwater equipment.
SUMMERY OF THE UTILITY MODEL
The utility model aims to use the coaxial double-oar technique of aircraft as the basis, combine the particularity of environment under water, and then design coaxial propeller driving system and coaxial double-oar underwater propulsor and aircraft, can offset the spin of propeller along the paddle direction of rotation, obtain better motion accuracy and obtain more thrust when more stable gesture.
The utility model discloses a following technical scheme realizes:
the utility model provides a power system of a coaxial propeller, which comprises a first blade driving system and a second blade driving system;
the first blade driving system comprises an upstream driving motor and a first blade which are coaxially arranged, and the upstream driving motor is in transmission connection with the first blade;
the second blade driving system comprises a downstream driving motor and a second blade which are coaxially arranged, and the downstream driving motor is in transmission connection with the second blade;
the upstream driving motor and the downstream driving motor are coaxially arranged and fixedly connected.
When the structure is adopted, the upstream driving motor and the downstream driving motor are coaxially arranged, when the first paddle and the second paddle rotate simultaneously and reversely, the self-rotating problem in the operation process of the equipment can be effectively reduced, meanwhile, the thrust of a single propeller can be increased, and the movement performance of the equipment can be improved. The first blade driving system and the second blade driving system respectively use the upstream driving motor and the downstream driving motor as power machines, so that the first blade and the second blade can be independently driven and controlled without mutual influence, a series of mechanical transmission systems of the conventional coaxial double-blade structure are not adopted, the same function is exerted by a simple structure, and the propeller is particularly suitable for a propeller with limited arrangement space.
Further for better realization the utility model discloses, adopt the following structure that sets up very much: the upstream driving motor is a shaftless outer rotor motor, and the downstream driving motor is a shaft motor; the first blade is fixedly connected with an outer rotor of the upstream driving motor, a stator or a middle shaft of the downstream driving motor extends into the inner side of the stator of the upstream driving motor and is in supporting connection with the stator of the upstream driving motor, the middle shaft of the downstream driving motor penetrates through the upstream driving motor, and the second blade is fixedly connected with a protruding section of the middle shaft of the downstream driving motor;
or the like, or, alternatively,
the upstream driving motor is a shaft motor, and the downstream driving motor is a shaftless outer rotor motor; the second blade is fixedly connected with an outer rotor of the downstream driving motor; the stator or the middle shaft of the upstream driving motor extends into the inner side of the stator of the downstream driving motor and is in supporting connection with the stator of the downstream driving motor, the middle shaft of the upstream driving motor penetrates through the downstream driving motor, and the first blade is fixedly connected with the extending section of the middle shaft of the upstream driving motor.
When the structure is adopted, the shaftless outer rotor motor and the shafted motor adopt a nested or partially nested connection structure, the axial length of the power system of the coaxial propeller can be further reduced, and the coaxial propeller power system is particularly suitable for underwater equipment with limited size and capable of only placing a single-propeller.
Further for better realization the utility model discloses, adopt the following structure that sets up very much: the upstream driving motor is a shaftless outer rotor motor, and the downstream driving motor is a shaftless outer rotor motor; the first blade is fixedly connected with the outer rotor of the upstream driving motor, and the second blade is fixedly connected with the outer rotor of the downstream driving motor; the stator of the upstream drive motor abuts the stator of the downstream drive motor.
When the structure is adopted, the two shaftless outer rotor motors are coaxially arranged and are in butt joint connection, a coaxial propeller power system with smaller axial length can be obtained, the structure is particularly suitable for underwater equipment with limited size and capable of only placing a single-propeller, and excellent performance is exerted by a simple structure by virtue of excellent starting torque of the motor and sensitive and high-precision driving control.
Further for better realization the utility model discloses, adopt the following structure that sets up very much: the upstream driving motor is a shaft motor, and the downstream driving motor is a shaft motor; the first paddle is fixedly connected with the middle shaft of the upstream driving motor, and the second paddle is fixedly connected with the middle shaft of the downstream driving motor; the stator of the upstream driving motor is fixedly connected with the stator of the downstream driving motor.
Further for better realization the utility model discloses, adopt the following structure that sets up very much: the shaft motor is a shaft inner rotor motor or a hydraulic motor or a shaft outer rotor motor, and a middle shaft of the shaft outer rotor motor is fixedly connected with an outer rotor of the shaft outer rotor motor.
Further for better realization the utility model discloses, adopt the following structure that sets up very much: the torque of the downstream drive motor is greater than or equal to the torque of the upstream drive motor.
When the arrangement structure is adopted, the downstream driving motor is mainly responsible for outputting thrust, and the upstream driving motor is mainly responsible for outputting torque so as to counteract the spin effect generated by the second blade driving system and provide a part of thrust.
Further for better realization the utility model discloses, adopt the following structure that sets up very much: the downstream drive motor mounts the second blade with wider blades than the upstream drive motor mounts the first blade.
Further for better realization the utility model discloses, adopt the following structure that sets up very much: and attitude sensors which are coaxially arranged are arranged in the upstream driving motor and the downstream driving motor, and the attitude sensors are used for sensing the axial deflection of the corresponding driving motors.
When the structure is adopted, the attitude sensor can be used for sensing the torque balance condition in real time, transmitting the electric signal to the main control chip of the control circuit through the sensing circuit, and transmitting the electric signal to the driving circuit through the control circuit by the main control chip so as to adjust the rotating speeds of the upstream driving motor and the downstream driving motor in real time, thereby keeping a dynamic balance of the attitude.
The utility model also provides a coaxial double-oar underwater propeller adopting the coaxial propeller power system, which comprises a control cabin, a propeller shell and the coaxial propeller power system;
the propeller shell is arranged in the control cabin, and the coaxial propeller power system is fixedly arranged on the inner side of the propeller shell.
When the structure is arranged, the coaxial double-paddle underwater propeller has shorter axial length, can offset the self-rotation along the rotation direction of the second paddle while increasing the thrust, is not easy to cause the mechanical fatigue of the structure, and improves the attitude stability and the structural stability of the underwater equipment.
The utility model also provides an adopt this coaxial propeller driving system's coaxial double-oar aircraft, including aircraft main part and foretell coaxial propeller driving system, coaxial propeller driving system install in the aircraft main part.
When the structure is arranged, the propeller power system of the coaxial double-propeller aircraft has shorter axial length, can offset the self-rotation along the rotation direction of the second blade while increasing the thrust, is not easy to cause structural mechanical fatigue, and improves the attitude stability and the structural stability.
The utility model has the advantages of it is following and beneficial effect:
the utility model discloses in, with the coaxial setting of upper reaches driving motor and low reaches driving motor, when first paddle and second paddle just reverse rotation simultaneously, can reduce the spin problem of equipment operation in-process effectively, the thrust of multiplicable single propeller, improve equipment motion performance simultaneously. The first blade driving system and the second blade driving system respectively use the upstream driving motor and the downstream driving motor as power machines, so that the first blade and the second blade can be independently driven and controlled without mutual influence, a series of mechanical transmission systems of the conventional coaxial double-blade structure are not adopted, the same function is exerted by a simple structure, and the propeller is particularly suitable for a propeller with limited arrangement space. The coaxial double-propeller underwater propeller and the coaxial double-propeller aircraft adopting the coaxial propeller power system have shorter axial length, can offset the self-rotation along the rotation direction of the second propeller while increasing the thrust, are not easy to cause the mechanical fatigue of the structure, and improve the attitude stability and the structural stability of the underwater equipment.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of the external structure of a coaxial twin-screw underwater propeller;
FIG. 2 is a schematic cross-sectional view of a coaxial twin-screw underwater propeller;
labeled as:
1. an upstream drive motor; 2. a first blade; 3. a downstream drive motor; 4. a second blade; 5. a propeller housing; 6. a main control cabin; 7. a motor support frame; 8. a middle shaft; 9. a cowling; 10. an upstream motor stator support; 11. a downstream motor stator support; 12. a blade fastening cap; 13. a downstream motor rotor housing; 14. an upstream motor rotor housing.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Example 1:
the embodiment provides a coaxial propeller power system, which is based on the coaxial double-propeller technology of an aircraft and is obtained by combining the special design of an underwater environment, can counteract the spin of a propeller along the rotation direction of a blade, obtains better motion precision and more stable posture and simultaneously obtains more thrust, and is particularly arranged into the following structures as shown in fig. 1 and fig. 2:
the power system of the coaxial propeller mainly aims at underwater equipment
Basically, the power system of the coaxial propeller comprises a first blade driving system and a second blade driving system, and the first blade driving system and the second blade driving system are sequentially arranged along the propelling direction.
The first blade drive system comprises an upstream drive motor 1 and a first blade 2 arranged coaxially, and the second blade drive system comprises a downstream drive motor 3 and a second blade 4 arranged coaxially.
For the first and second blade drive systems, an optional first structure is that the upstream drive motor 1 and the downstream drive motor 3 are both shaft motors, the shaft motors may be inner rotor motors with a central shaft, or hydraulic motors with a central shaft, or outer rotor motors with a central shaft, and outer rotors of the outer rotor motors with central shafts are fixedly connected with the central shaft inside. The first paddle 2 is fixedly connected to the extending section of the middle shaft of the upstream driving motor 1 to realize transmission connection, the second paddle 4 is fixedly connected to the extending section of the middle shaft of the downstream driving motor 3 to realize transmission connection, the stator of the upstream driving motor 1 is provided with a shell, the stator of the downstream driving motor 3 is also provided with a shell, and the shell of the upstream driving motor 1 and the shell of the downstream driving motor 3 are coaxially and sequentially arranged and can be directly and fixedly connected.
In a second alternative, the upstream drive motor 1 is a shaftless external rotor motor, and the downstream drive motor 3 is also a shaftless external rotor motor. The outer rotor of the upstream driving motor 1 is sleeved with a shell to form a rotor shell, and the first blades 2 are sleeved and fixedly connected with the shell of the upstream driving motor 1 to realize transmission connection; the outer rotor of the downstream driving motor 3 is also sleeved with a shell to form a rotor shell, the second blades 4 are sleeved and fixedly connected to the shell of the downstream driving motor 3 to realize transmission connection, and the shell of the upstream driving motor 1 and the shell of the downstream driving motor 3 are coaxially and sequentially arranged and can be directly butted and fixed. The two shaftless outer rotor motors are coaxially arranged and are in butt joint connection, a coaxial propeller power system with smaller axial length can be obtained, the two shaftless outer rotor motors are particularly suitable for underwater equipment with limited size and capable of only placing a single-propeller, and excellent performance is achieved through a simple structure by means of excellent starting torque of the motors and sensitive and high-precision driving control.
The optional third structure is that the upstream driving motor 1 is selected to be an inner rotor motor with a central shaft, the downstream driving motor 3 is selected to be a shaftless outer rotor motor, the first blade 2 is fixedly connected with the extending shaft of the upstream driving motor 1, and the second blade 4 is sleeved and fixedly connected with the shell of the downstream driving motor 3; the housing or central shaft of the upstream drive motor 1 projects into the stator inner side of the downstream drive motor 3 and is fixedly connected with the stator inner ring of the downstream drive motor 3.
The preferred construction is similar to the third construction, with the main difference that the upstream drive motor 1 is selected opposite to the downstream drive motor 3, in particular, the upstream drive motor 1 is preferably a shaftless external rotor motor, and the downstream drive motor 3 is selected as a shafted motor, preferably an internal rotor motor having a central shaft 8, the central shaft 8 being the internal rotor. This embodiment is further detailed by this preferred structural scheme:
the stator of the upstream driving motor 1 is fixed on an upstream motor stator support 10, an outer rotor is sleeved with a shell to form an upstream motor rotor shell 14, the upstream motor rotor shell 14 is provided with a shaft sleeve extending into the hollow part of the stator, the shaft sleeve part is in supporting connection with the upstream motor stator support 10 through a bearing, and the first blades 2 are sleeved and fixedly connected with the shell of the upstream driving motor 1 to realize transmission connection.
The stator of the downstream driving motor 3 is fixedly arranged on a downstream motor stator support 11, a downstream motor rotor shell 13 and a fairing 9 are sequentially fixedly screwed at the tail section of the middle shaft 8, the downstream motor rotor shell 13 covers the stator and synchronously rotates with the rotor, the head end of the middle shaft 8 penetrates into the inner side of the stator of the upstream driving motor 1 and is inserted into a shaft sleeve of the upstream motor stator support 10 to penetrate out, the middle shaft 8 is supported and connected with the upstream motor stator support 10 through a bearing, a blade fastening cap 12 is arranged at the extending section of the middle shaft 8, the rear end of the blade fastening cap 12 covers the front part of the upstream driving motor 1, and the second blade 4 is fixedly sleeved at the blade fastening cap 12 and is in transmission connection with the middle shaft 8. The second blade 4 is located upstream of the first blade 2.
Under the structure, the shaftless outer rotor motor and the shaft motor adopt a nested or partially nested connection structure, the axial length of the power system of the coaxial propeller can be further reduced, and the coaxial propeller is particularly suitable for underwater equipment with limited size and capable of only placing a single-propeller.
The downstream drive motor 3 is primarily responsible for outputting thrust, and the upstream drive motor 1 is primarily responsible for outputting torque to counteract the spinning effect produced by the second blade drive system, while providing a portion of thrust. Therefore, in selecting the parameters of the upstream drive motor 1 and the downstream drive motor 3, the torque parameter of the upstream drive motor 1 and the torque parameter of the downstream drive motor may be the same or different, as in the case of the motors. In contrast, the torque parameter of the downstream driving motor 3 should be larger than the torque parameter of the upstream driving motor 1, and further, the blades of the second blade 4 mounted on the downstream driving motor 3 are wider than the blades of the first blade 2 mounted on the upstream driving motor 1, and the rotating speed of the downstream driving motor 3 is controlled to be lower than that of the upstream driving motor 1 in actual operation.
In the control aspect of the coaxial propeller power system, an upstream driving motor 1 and a downstream driving motor 3 are controlled by different drivers, and an attitude sensor is mounted at a coaxial position inside the upstream driving motor 1, and an attitude sensor is mounted at a coaxial position inside the downstream driving motor 3, and the attitude sensors are used for sensing the axial deflection of the corresponding driving motors. The control system comprises two driving circuits, a control circuit and two sensing circuits, wherein a driver of an upstream driving motor 1 is connected with one driving circuit, a driver of a downstream driving motor 3 is connected with the other driving circuit, an attitude sensor arranged on the upstream driving motor 1 is connected with one sensing circuit, an attitude sensor arranged on the downstream driving motor 3 is connected with the other sensing circuit, and the two driving circuits and the two sensing circuits are connected with a main control chip connected with the control circuit. The driving circuit, the control circuit and the sensing circuit of the control system are all in the prior art.
The upstream driving motor 1 and the downstream driving motor 3 are coaxially arranged, when the first blade 2 and the second blade 4 operate, the main control chip controls the upstream driving motor 1 and the downstream driving motor 3 to simultaneously and reversely rotate, the self-rotating problem in the operation process of the equipment can be effectively reduced, meanwhile, the thrust of a single propeller can be increased, and the motion performance of the equipment can be improved. The first blade driving system and the second blade driving system respectively use the upstream driving motor 1 and the downstream driving motor 3 as power machines, so that the first blade 2 and the second blade 4 can realize independent driving control without mutual influence, a series of mechanical transmission systems of the conventional coaxial double-blade structure are not adopted, the same function is exerted by a simple structure, and the propeller is particularly suitable for a propeller with limited arrangement space. The attitude sensor can be an optical encoder or a magnetic encoder, and can be used for sensing the torque balance condition in real time, transmitting an electric signal to a main control chip of the control circuit through the sensing circuit, and transmitting the electric signal to the driving circuit through the control circuit by the main control chip so as to adjust the rotating speeds of the upstream driving motor 1 and the downstream driving motor 3 in real time, thereby keeping a dynamic balance of the attitude.
During operation, the middle shaft 8, the blade fastening cap 12, the downstream motor rotor shell 13, the fairing 9 and the second blade 4 rotate forwards together, the first blade 2, the outer rotor of the upstream driving motor 1 and the upstream motor rotor shell 14 rotate backwards together, and the propeller shell 5, the main control cabin 6, the motor support frame 7, the stators of the upstream driving motor 1 and the downstream driving motor 3, the upstream motor stator support 10 and the downstream motor stator support 11 are fixed differently.
Example 2:
the embodiment further provides a coaxial double-propeller underwater propeller adopting the power system of the coaxial propeller on the basis of the above embodiment, which can counteract the self-rotation of the propeller along the rotation direction of the blades, obtain better motion precision and more stable posture and simultaneously obtain more thrust, and particularly adopts the following arrangement structure:
the coaxial double-propeller underwater propeller adopting the coaxial propeller power system comprises a control cabin, a propeller shell 5 and the coaxial propeller power system in the embodiment 1. In this embodiment, the upstream driving motor 1 is specifically a shaftless external rotor brushless dc motor, and the downstream driving motor 3 is specifically an internal rotor dc motor having a central shaft 8. The propeller shell 5 is a substantially cylindrical structural member, a flow channel which is through from front to back is formed, a main control cabin 6 is arranged on the outer side of the propeller shell 5, the main control cabin 6 is used as a fixing frame of the propeller and is fixedly connected with the control cabin, and the propeller shell 5 is fixedly connected with the control cabin through the main control cabin 6. The mechanical mechanism of the coaxial propeller power system is integrally arranged in the propeller shell 5, a downstream motor stator support 11 of the downstream driving motor 3 and an upstream motor stator support 10 of the upstream driving motor 1 are connected with a motor support frame 7, and the whole coaxial propeller power system is fixed on the inner wall of the propeller shell 5 through the motor support frame 7 in a welding mode. A control circuit in a control part of the power system of the coaxial propeller is arranged in a control cabin, a driving circuit is arranged in a main control cabin 6, and a sensing circuit is arranged in a corresponding motor. Each joint of the coaxial double-paddle underwater propeller is subjected to watertight treatment, and the motor is a waterproof motor. The coaxial double-paddle underwater propeller has shorter axial length, can offset the self-rotation along the rotating direction of the second paddle 4 while increasing the thrust, is not easy to cause structural mechanical fatigue, and improves the attitude stability and the structural stability of underwater equipment.
Example 3:
this embodiment further provides a coaxial double-oar aircraft on the basis of above-mentioned embodiment, can offset the spin of aircraft along paddle direction of rotation, obtains better motion accuracy and more stable gesture and obtains more thrust when further for better realization the utility model discloses, adopt the following structure that sets up very much:
the coaxial double-propeller aircraft adopting the coaxial propeller power system comprises an aircraft body and the coaxial propeller power system in the embodiment 1, the coaxial propeller power system is generally vertically arranged, the upstream driving motor 1 is positioned above the downstream driving motor 3, and the shell of the downstream driving motor 3 is fixedly arranged at the aircraft body to realize the installation and fixation of the whole coaxial propeller power system. The propeller power system of the coaxial double-propeller aircraft has shorter axial length, can offset the self-rotation along the rotating direction of the second propeller blade 4 while increasing the thrust, is not easy to cause structural mechanical fatigue, and improves the attitude stability and the structural stability.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention.
Claims (10)
1. Coaxial propeller driving system, its characterized in that: comprises a first blade driving system and a second blade driving system;
the first blade driving system comprises an upstream driving motor (1) and a first blade (2) which are coaxially arranged, and the upstream driving motor (1) is in transmission connection with the first blade (2);
the second blade driving system comprises a downstream driving motor (3) and a second blade (4) which are coaxially arranged, and the downstream driving motor (3) is in transmission connection with the second blade (4);
the upstream driving motor (1) and the downstream driving motor (3) are coaxially arranged and fixedly connected.
2. The coaxial propeller power system of claim 1, wherein: the upstream driving motor (1) is a shaftless outer rotor motor, and the downstream driving motor (3) is a shaft motor; the first blade (2) is fixedly connected with an outer rotor of the upstream driving motor (1), a stator or a middle shaft of the downstream driving motor (3) extends into the inner side of the stator of the upstream driving motor (1) and is in supporting connection with the stator of the upstream driving motor (1), the middle shaft of the downstream driving motor (3) penetrates through the upstream driving motor (1), and the second blade (4) is fixedly connected with a protruding section of the middle shaft of the downstream driving motor (3);
or the like, or, alternatively,
the upstream driving motor (1) is a shaft motor, and the downstream driving motor (3) is a shaftless outer rotor motor; the second blade (4) is fixedly connected with an outer rotor of the downstream driving motor (3); the stator or the middle shaft of the upstream driving motor (1) extends into the inner side of the stator of the downstream driving motor (3) and is in supporting connection with the stator of the downstream driving motor (3), the middle shaft of the upstream driving motor (1) penetrates through the downstream driving motor (3), and the first blade (2) is fixedly connected with the extending section of the middle shaft of the upstream driving motor (1).
3. The coaxial propeller power system of claim 1, wherein: the upstream driving motor (1) is a shaftless outer rotor motor, and the downstream driving motor (3) is a shaftless outer rotor motor; the first blade (2) is fixedly connected with the outer rotor of the upstream driving motor (1), and the second blade (4) is fixedly connected with the outer rotor of the downstream driving motor (3); the stator of the upstream drive motor (1) abuts the stator of the downstream drive motor (3).
4. The coaxial propeller power system of claim 1, wherein: the upstream driving motor (1) is a shaft motor, and the downstream driving motor (3) is a shaft motor; the first paddle (2) is fixedly connected with the middle shaft of the upstream driving motor (1), and the second paddle (4) is fixedly connected with the middle shaft of the downstream driving motor (3); the stator of the upstream driving motor (1) is fixedly connected with the stator of the downstream driving motor (3).
5. The coaxial propeller power system of claim 2 or 4, wherein: the shaft motor is a shaft inner rotor motor or a hydraulic motor or a shaft outer rotor motor, and a middle shaft of the shaft outer rotor motor is fixedly connected with an outer rotor of the shaft outer rotor motor.
6. The coaxial propeller power system of any one of claims 1-4, wherein: the torque of the downstream drive motor (3) is greater than or equal to the torque of the upstream drive motor (1).
7. The coaxial propeller power system of claim 6, wherein: the downstream drive motor (3) mounts the second blade (4) with wider blades than the upstream drive motor (1) mounts the first blade (2).
8. The coaxial propeller power system of claim 6, wherein: attitude sensors which are coaxially arranged are mounted in the upstream driving motor (1) and the downstream driving motor (3), and the attitude sensors are used for sensing the axial deflection of the corresponding driving motors.
9. Coaxial double-oar underwater propulsor, its characterized in that: comprising a control pod, a propeller housing (5) and a coaxial propeller power system according to any of claims 1-8;
the propeller shell (5) is arranged in the control cabin, and the coaxial propeller power system is fixedly arranged on the inner side of the propeller shell (5).
10. Coaxial double-oar aircraft, its characterized in that: comprising an aircraft body and a coaxial thruster power system as claimed in any one of claims 1 to 8 mounted to the aircraft body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020693525.9U CN212099307U (en) | 2020-04-29 | 2020-04-29 | Coaxial propeller power system, coaxial double-propeller underwater propeller and aircraft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020693525.9U CN212099307U (en) | 2020-04-29 | 2020-04-29 | Coaxial propeller power system, coaxial double-propeller underwater propeller and aircraft |
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| CN212099307U true CN212099307U (en) | 2020-12-08 |
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| CN202020693525.9U Active CN212099307U (en) | 2020-04-29 | 2020-04-29 | Coaxial propeller power system, coaxial double-propeller underwater propeller and aircraft |
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