CN217805217U - Power device, propeller and aquatic equipment - Google Patents

Abstract

The application discloses power device, propeller and equipment on water. The power device comprises: the first rotor assembly comprises a magnetic part and a first rotating shaft fixedly connected with the magnetic part; the second rotor assembly comprises an electromagnetic assembly and a second rotating shaft fixedly connected with the electromagnetic assembly, the magnetic part is arranged outside the electromagnetic assembly in a surrounding mode, and the magnetic part and the electromagnetic assembly mutually perform magnetic force action so that the first rotating shaft and the second rotating shaft can relatively rotate; the shell is provided with an accommodating cavity, a first opening and a second opening, wherein the first opening and the second opening are communicated with the accommodating cavity and are arranged oppositely, the first rotor assembly and the second rotor assembly are arranged in the accommodating cavity, the first end of the first rotating shaft extends out of the shell from the first opening, and the first end of the second rotating shaft extends out of the shell from the second opening. Through the technical means, the driving efficiency of the power device can be effectively improved, and the noise of the power device can be effectively reduced.

Description

Power device, propeller and aquatic equipment

Technical Field

The application relates to the field of power devices, in particular to a power device, a propeller and water equipment.

Background

In the impeller fluid power machinery industry, the blades are generally rotated to stir fluid so as to generate power, such as products of propellers (aviation and ships), fans, water pumps and the like. Because the blades rotate, after the fluid passes through the blades, a traction rotation speed along the rotation direction of the impeller is generally obtained except for obtaining a target speed and a target pressure, and the speed does not have a beneficial effect on most impeller machines, so in order to improve the performance of the impeller fluid power machine, a front impeller and a rear impeller are generally adopted to rotate in a contra-rotating mode to recover the part of rotation energy for improving the product performance.

At present, the contra-rotating function of various impeller machines is realized by adopting a transmission mechanism, the realization mode has complex structure and high cost on one hand, and on the other hand, the transmission mechanism can generate larger noise and part of transmission loss.

Disclosure of Invention

The application provides a power device, propeller and equipment on water for improve drive efficiency and noise reduction.

In order to solve the above technical problem, the present application proposes a power device, including: the first rotor assembly comprises a magnetic part and a first rotating shaft fixedly connected with the magnetic part; the second rotor assembly comprises an electromagnetic assembly and a second rotating shaft fixedly connected with the electromagnetic assembly, the magnetic part is arranged outside the electromagnetic assembly in a surrounding mode, and the magnetic part and the electromagnetic assembly mutually perform magnetic force action so that the first rotating shaft and the second rotating shaft can relatively rotate; the casing is provided with an accommodation chamber and first opening and the second opening that sets up with the accommodation chamber intercommunication and relative, and first rotor subassembly and second rotor subassembly all set up in the accommodation intracavity, and the first end of first pivot extends to outside the casing from first opening to as a load drive shaft, and the first end of second pivot extends to outside the casing from the second opening, in order as another load drive shaft.

The second rotating shaft and the first rotating shaft are arranged along the axial direction of the first rotating shaft and are coaxially arranged.

Wherein, first pivot still is equipped with the second end that sets up with the first end of first pivot is relative, and first rotor subassembly still includes: the barrel is provided with relative first end and the second end that sets up, and the first end of barrel encloses to be established outside the second end of first pivot, and with first pivot fixed connection, the second end of barrel encloses to be established and deviates from the periphery side of electromagnetic component at the magnetic part, and with magnetic part fixed connection.

Wherein, the second pivot is provided with the second end that sets up with the first end of second pivot is relative, and the second end of second pivot extends to the first end of barrel, and power device still includes: the first bearing is arranged between the first end of the cylinder and the second rotating shaft; and the second bearing is arranged between the second end of the cylinder and the second rotating shaft.

Wherein, the second pivot still is equipped with the second end that sets up with the first end of second pivot is relative, and the electromagnetism subassembly includes: the iron core is arranged outside the second end of the second rotating shaft in a surrounding mode and is fixedly connected with the second end of the second rotating shaft.

Wherein, power device still includes: and the conductive assembly is arranged in the accommodating cavity and is electrically connected with the coil winding and the electric lead respectively and used for providing electric signals for the coil winding.

Wherein, electrically conductive subassembly includes: the insulating part is fixedly surrounded outside the second rotating shaft and is positioned between the iron core and the second opening of the shell; the conductive hook is provided with a first end and a second end which are oppositely arranged, the conductive hook is embedded in the insulating part, and the first end of the conductive hook extends out of the insulating part and is electrically connected with the coil winding; and the conductive piece is arranged around the insulating piece, and the second end of the conductive hook extends out of the insulating piece and is electrically connected with the conductive piece.

The conductive piece comprises a fixing piece and a rotating piece, the rotating piece is arranged on the second rotating shaft, the insulating piece is located between the rotating piece and the second rotating shaft, the second end of the conductive hook is electrically connected with the rotating piece, the fixing piece is fixedly arranged in the containing cavity and is insulated, the fixing piece is electrically conductive with the rotating piece, and the fixing piece is electrically connected with the electric lead.

The fixing piece comprises a support and a carbon brush, the support is fixedly arranged in the accommodating cavity and insulated, the carbon brush is arranged on the support and electrically connected with the electric lead, and the carbon brush is contacted with the rotating piece and is electrically conductive.

And conductive metal is arranged between the fixed part and the rotating part so as to enable the fixed part and the rotating part to be conductive.

Wherein, power device still includes: a third bearing disposed between an inner wall of the first opening and the first rotation shaft; and the fourth bearing is arranged between the inner wall of the second opening and the second rotating shaft.

Wherein, power device still includes: a first sealing member provided between an inner wall of the first opening and the first rotation shaft for sealing a gap between the inner wall of the first opening and the first rotation shaft; and the second sealing element is arranged between the inner wall of the second opening and the second rotating shaft and used for sealing a gap between the inner wall of the second opening and the second rotating shaft.

In order to solve the technical problem, the application provides the application and also provides a propeller which comprises the power device.

Wherein, the propeller includes: the propeller hub of the first propeller is provided with a first groove, and the first end of the first rotating shaft is embedded in the first groove; the propeller hub of the second propeller is provided with a second groove, and the first end of the second rotating shaft is embedded in the second groove.

In order to solve the technical problem, the application provides the application and also provides a water device which comprises the propeller.

The beneficial effects of the embodiment of the application are that: the application provides a power device, which comprises a first rotor assembly, a second rotor assembly and a shell. The first rotor assembly comprises a magnetic part and a first rotating shaft fixedly connected with the magnetic part, and the second rotor assembly comprises an electromagnetic assembly and a second rotating shaft fixedly connected with the electromagnetic assembly. Wherein, the magnetism spare encloses to be established outside the electromagnetism subassembly, and magnetism spare passes through the effect of magnetic force with the electromagnetism subassembly for first pivot and second pivot relative rotation, through first pivot and the relative rotatable relation of second pivot promptly, make the mutual acting force of magnetism spare and electromagnetism subassembly whole conversion first pivot and the torque of second pivot, thereby improve power device's performance. Meanwhile, the first rotating shaft and the second rotating shaft are arranged in the accommodating cavity of the shell, extend out of the first opening and the second opening which are opposite to the shell respectively, and are connected with different loads, so that the power device directly drives the loads.

Drawings

FIG. 1 is a schematic view of the propeller of the present application;

fig. 2 is an enlarged view of a portion a of fig. 1.

Detailed Description

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

The terms "first" and "second" in this application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specifically limited otherwise. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover an exclusive inclusion. 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.

The application provides a power device, which is shown in fig. 1, wherein fig. 1 is a schematic structural diagram of a propeller of the application; wherein, this power device 10 includes: a first rotor assembly 100, a second rotor assembly 200, and a housing 300.

As will be discussed with reference to fig. 1, the first rotor assembly 100 includes a magnetic member 101 and a first rotating shaft 102 fixedly connected to the magnetic member 101.

The second rotor assembly 200 includes an electromagnetic assembly 201 and a second rotating shaft 202 fixedly connected to the electromagnetic assembly 201, the magnetic member 101 is enclosed outside the electromagnetic assembly 201, and the magnetic member 101 and the electromagnetic assembly 201 interact with each other by magnetic force, so that the first rotating shaft 102 and the second rotating shaft 202 rotate relatively.

The housing 300 has a receiving cavity and a first opening and a second opening opposite to the receiving cavity, the first rotor assembly 100 and the second rotor assembly 200 are both disposed in the receiving cavity, and the first end of the first rotating shaft 102 extends from the first opening to the outside of the housing 300 to be used as a load driving shaft, and the first end of the second rotating shaft 202 extends from the second opening to the outside of the housing 300 to be used as another load driving shaft.

It should be noted that the first rotating shaft 102 and the second rotating shaft 202 are respectively rotatably connected to the housing 300, and the first rotating shaft 102 and the second rotating shaft 202 are rotatable relative to each other. The first rotating shaft 102 receives the acting force of the second rotating shaft 202 (the magnetic force action or the interaction force between the magnetic member 101 and the electromagnetic assembly 201) to rotate around its own rotating shaft, the second rotating shaft 202 receives the reaction force of the first rotating shaft 102 to rotate around its own rotating shaft (the rotation direction is opposite to that of the first rotating shaft 102), and simultaneously, the first rotating shaft 102 and the second rotating shaft 202 can both rotate relative to the housing 300, so that the interaction force (two torques in opposite directions) between the magnetic member 101 and the electromagnetic assembly 201 is completely converted into the torques of the first rotating shaft 102 and the second rotating shaft 202. While the first rotating shaft 102 and the second rotating shaft 202 rotate relatively in the above manner, the first end of the first rotating shaft 102 and the first end of the second rotating shaft 202 respectively extend out of the housing 300 from the first opening and the second opening which are oppositely arranged along the axial direction, and are respectively connected with corresponding loads, so as to realize power output of the power device 10. Through the above manner, the interaction force between the first rotating shaft 102 and the second rotating shaft 202 (the interaction force between the magnetic member 101 and the electromagnetic assembly 201) is directly transmitted to the load through the first rotating shaft 102 and the second rotating shaft 202, so that the adverse effect caused by the reaction force of the first rotating shaft 102 or the second rotating shaft 202 on the housing 300 or the main body of the power device 10 is avoided, meanwhile, the rotation energy in the reaction force of the first rotating shaft 102 or the second rotating shaft 202 is also recovered to a certain extent, and further, the driving efficiency of the power device 10 is effectively improved.

Specifically, as can be seen from the volume torque density index designed for the motor, under the condition of coaxial and same power, the torque is generally smaller as the rotating speed is higher, and the volume of the motor is smaller. Conversely, the lower the speed, the greater the torque, and the greater the volume required by the motor. In the impeller fluid power machine, the lower the rotating speed of the rotating shaft is, the better the performance is. When the cavitation device is applied to a propeller to propel a ship, the lower the rotating speed is, the better the cavitation performance is. It can be seen that the performance requirement of the impeller is opposite to the requirement of the rotating speed of the motor, and in the related art, in order to make the volume of the motor small, only the performance of the propeller is sacrificed, or the volume of the motor is sacrificed in order to ensure the performance of the propeller, or a speed reducer or a transmission mechanism is added between the propeller and the motor for connection, but the speed reducer, the transmission mechanism, and the like will bring about an increase in cost and motor volume, and will also bring about an efficiency loss and noise. The volume torque density index of the power device 10 of the present application may refer to a volume torque density index designed for a motor.

In the power device 10 of the present application, the first rotating shaft 102 and the second rotating shaft 202 are respectively connected with the housing 300 in the above manner, and the power of the power device 10 is respectively evenly distributed to the first rotating shaft 102 and the second rotating shaft 202 in half and in half. Through the above manner, the torque of the power device 10 is directly transmitted to the load through the first rotating shaft 102 and the second rotating shaft 202, thereby saving a complicated transmission structure, effectively reducing the overall structural size and weight of the power device 10, and effectively reducing the transmission noise of the power device 10.

Further, according to different practical applications, the first rotating shaft 102 and the second rotating shaft 202 of the power device 10 may be respectively connected to corresponding loads, for example, when the power device 10 is applied to a propeller of a certain kind of equipment on water, the corresponding first rotating shaft 102 and the corresponding second rotating shaft 202 may be connected to an external load such as a propeller, and the torque performance of the external load such as the propeller arranged on the first rotating shaft 102 and the second rotating shaft 202 is designed to be consistent, so that the rotating speeds of the output shafts at both ends can be respectively reduced to half of the original rotating speeds, thereby achieving the purpose of reducing the rotating speeds. By adopting the technical means, the power device 10 has the characteristics of high rotating speed, small torque and small volume, and simultaneously can make the rotating speed of the external loads of the impellers such as the propellers become low by designing the torque performance of the external loads such as the propellers on the first rotating shaft 102 and the second rotating shaft 202 to be consistent, so that the performance of the propellers is improved, thereby realizing the technical aim of ensuring the small volume of the power device 10 without sacrificing the performance of the propellers, and effectively improving the driving efficiency of the power device 10. By adopting the power device 10, the propelling efficiency of the propeller can be more efficient, and the water equipment can run more stably.

In the power device in the prior art, a structure of a stator and a rotor is generally adopted to realize power output, however, a part of interaction force between the stator and the rotor enables the rotor to rotate, the other part of interaction force directly acts on the stator, and the stator is integrally and directly fixed with the power device, so that the other part of interaction force directly acts on the whole power device in an external force manner, the power device is subjected to a torque opposite to that of the rotor, and the integral balance of the power device and the water equipment provided with the power device is influenced. In the power device 10 of the present application, the magnetic member 101 and the electromagnetic assembly 201 are respectively connected to the first rotating shaft 102 and the second rotating shaft 202, so that the acting force between the magnetic member 101 and the electromagnetic assembly 201 is directly output in the form of torque through the first rotating shaft 102 and the second rotating shaft 202 respectively (i.e. the acting force between the magnetic member 101 and the electromagnetic assembly 201 is the internal force of the power device 10 at this time), and thus the acting force between the magnetic member 101 and the electromagnetic assembly 201 does not act on the whole power device 10 in the form of external force, and further the power device 10 and the water equipment equipped with the power device 10 operate more stably. It should be noted that the power plant 10 of the present application may be applied to equipment such as ships or aircrafts, and is merely illustrative and does not represent that the application of the power plant 10 of the present application is limited thereto.

Unlike the prior art, the present application provides a power device 10, wherein the power device 10 includes a first rotor assembly 100, a second rotor assembly 200 and a housing 300. The first rotor assembly 100 includes a magnetic member 101 and a first rotating shaft 102 fixedly connected to the magnetic member 101, and the second rotor assembly 200 includes an electromagnetic assembly 201 and a second rotating shaft 202 fixedly connected to the electromagnetic assembly 201. The magnetic member 101 is enclosed outside the electromagnetic assembly 201, and the magnetic member 101 and the electromagnetic assembly 201 are acted by magnetic force to enable the first rotating shaft 102 and the second rotating shaft 202 to rotate relatively, that is, the interaction force between the magnetic member 101 and the electromagnetic assembly 201 is completely converted into torque of the first rotating shaft 102 and the second rotating shaft 202 through the relative rotatable relationship between the first rotating shaft 102 and the second rotating shaft 202, so as to improve the performance of the power device 10. Meanwhile, the first rotating shaft 102 and the second rotating shaft 202 are disposed in the accommodating cavity of the housing 300, extend out from the first opening and the second opening of the housing, and are connected to different loads, so that the power device 10 directly drives the loads.

Optionally, the second rotating shaft 202 and the first rotating shaft 102 are arranged along the axial direction of the first rotating shaft 102 and are coaxially disposed.

Specifically, while the first rotating shaft 102 and the second rotating shaft 202 are connected in the above manner, the arrangement manner of the first rotating shaft 102 and the second rotating shaft 202 in the accommodating cavity is coaxial and arranged oppositely (i.e., the second rotating shaft 202 and the first rotating shaft 102 are arranged along the axial direction of the first rotating shaft 102) to ensure that the first end of the first rotating shaft 102 and the first end of the second rotating shaft 202 can extend to the outside of the housing 300 from the first opening and the second opening, respectively. Meanwhile, the power device 10 is coaxially and oppositely arranged in the accommodating cavity through the first rotating shaft 102 and the second rotating shaft 202, so that the overall structural size of the housing 300 is effectively saved, the overall structural size and the weight of the power device 10 are further reduced, and the propelling efficiency of the power device 10 is improved.

Optionally, the first rotating shaft 102 is further provided with a second end disposed opposite to the first end of the first rotating shaft 102, and the first rotor assembly 100 further includes: the cylinder 103, wherein the cylinder 103 is provided with a first end and a second end that are arranged oppositely, the first end of the cylinder 103 is enclosed outside the second end of the first rotating shaft 102 and is fixedly connected with the first rotating shaft 102, the second end of the cylinder 103 is enclosed on the outer periphery side of the magnetic member 101 that deviates from the electromagnetic assembly 201 and is fixedly connected with the magnetic member 101, and the second rotating shaft 202 is rotatably connected with the cylinder 103.

The second shaft 202 has a second end opposite to the first end of the second shaft 202, the second end of the second shaft 202 extends to the first end of the cylinder 103, and the first end 103 of the cylinder 103 surrounds the second end of the second shaft 202 in the inner peripheral side thereof.

For example, as shown in fig. 1, the first end and the second end of the cylinder 103 are divided into two hollow cylindrical structures with different diameters (the cylinder 103 may be other structures, which is not limited in this respect). Wherein, the first end of the cylinder 103 refers to a section of the cylinder 103 with a smaller diameter, and the second end of the cylinder 103 refers to a section of the cylinder 103 with a larger diameter. The first end of the cylinder 103 is disposed around the outer periphery of the first end of the first rotating shaft 102, and the first end of the cylinder 103 is fixedly connected to the second end of the first rotating shaft 102. The second end of the cylinder 103 surrounds the outer circumference of the second rotating shaft 202 to wrap the portion of the second rotating shaft 202 where the electromagnetic assembly 201 is disposed.

The power plant 10 further comprises: a first bearing 400 and a second bearing 401, wherein the first bearing 400 is disposed between the first end of the cylinder 103 and the second rotating shaft 202, and the second bearing 401 is disposed between the second end of the cylinder 103 and the second rotating shaft 202.

For example, as shown in FIG. 1, the first end of the barrel 103 refers to a section of the barrel 103 having a smaller diameter, and the second end of the barrel 103 refers to a section of the barrel 103 having a larger diameter. The first bearing 400 is disposed between an inner side wall of the first end of the cylinder 103 and an outer side wall of the second end of the second rotating shaft 202, and the second bearing 401 is disposed between an inner side wall of the second end of the cylinder 103 (the second end of the cylinder 103 refers to a side of the second end of the cylinder 103 away from the first end of the cylinder 103) and an outer side wall of the second rotating shaft 202, so as to achieve the rotational connection between the second rotating shaft 202 and the cylinder 103. Specifically, a first bearing mounting portion and a second bearing mounting portion for mounting a first bearing 400 and a second bearing 401 are respectively provided on inner sidewalls of a first end portion and a second end portion of the cylinder 103 for mounting the first bearing 400 and the second bearing 401.

The magnet assembly 201 and the magnetic member 101 are located between the first bearing 400 and the second bearing 401 in the axial direction of the second rotating shaft 202, wherein the magnetic member 101 is disposed in the inner circumferential side of the second end of the cylinder 103 and is fixedly connected to the cylinder 103. For example, the magnetic member 101 may be fixedly coupled to the cylindrical body 103 by being attached to an inner sidewall of the second end of the cylindrical body 103 by fitting.

The second end of the cylinder 103 is located between the magnetic member 101 and the second bearing 401, and a heat dissipation hole surrounding the axis of the cylinder 103 is provided for dissipating heat from the magnetic member 101 and the electromagnetic assembly 201.

Optionally, the power device 10 further includes: a third bearing 402 and a fourth bearing 403. A third bearing 402 is disposed between the inner wall of the first opening and the first rotating shaft 102, and a fourth bearing 403 is disposed between the inner wall of the second opening and the second rotating shaft 202. The second rotating shaft 202 is rotatably connected to the housing 300 through a fourth bearing 403, and the first rotating shaft 102 is rotatably connected to the housing 300 through a third bearing 402.

Specifically, a third bearing mounting portion and a fourth bearing mounting portion are disposed in the accommodating cavity of the housing 300 along the axis of the first rotating shaft 102 or the second rotating shaft 202 and corresponding to the third bearing 402 and the fourth bearing 403, respectively, for mounting the third bearing 402 and the fourth bearing 403.

Optionally, the power device 10 further includes a fifth bearing 404, and the fifth bearing 404 is disposed between an outer sidewall of the first end of the cylinder 103 and a sidewall of the accommodating cavity of the housing 300, so as to support the first rotating shaft 102 and the cylinder 103 through the third bearing 402 and the fifth bearing 404, and realize the rotational connection between the housing 300 and the first rotating shaft 102. A fifth bearing mounting portion is disposed in the accommodating cavity of the housing 300 corresponding to the fifth bearing 404 for mounting the fifth bearing 404.

The types of the first bearing 400, the second bearing 401, the third bearing 402, the fourth bearing 403, and the fifth bearing 404 may be specifically selected according to the stress conditions of the positions of the first bearing, the second bearing, the third bearing, the fourth bearing, and the fifth bearing, and are not specifically limited here. For example, the first bearing 400, the second bearing 401, the third bearing 402 and the fourth bearing 403 are mainly subjected to radial force and axial force, so corresponding rolling bearings can be used, and the fifth bearing 404 can be a sliding bearing to reduce the transmission noise of the power device 10.

Optionally, the electromagnetic assembly 201 includes: a core 2011 and a coil winding 2012 wound around the core 2011.

The iron core 2011 surrounds the second rotating shaft 202 and is fixedly connected to the second rotating shaft 202. In other words, the iron core 2011 is located between the first bearing 400 and the second bearing 401 along the axial direction of the second rotation shaft, and the iron core 2011 is used for winding the coil winding 2012.

Alternatively, as shown in fig. 2, fig. 2 is an enlarged view of part a of fig. 1; the power plant 10 further comprises: the conductive member 500.

The conductive element 500 is disposed in the accommodating cavity, and the conductive element 500 is electrically connected to the coil winding 2012 and the electrical conductor 501, respectively, and is configured to provide an electrical signal to the coil winding 2012, so as to generate electromagnetic induction with the magnetic element, thereby providing power for the relative rotation of the first rotating shaft 102 and the second rotating shaft 202.

Optionally, the conductive assembly 500 further comprises: an insulator 502, a conductive hook 503 and a conductive member 504.

The insulating member 502 is disposed around the second rotating shaft 202 and located between the iron core 2011 and the second opening of the housing 300, so as to prevent the power device 10 from leaking electricity.

The conductive hook 503 has a first end and a second end opposite to each other, the conductive hook 503 is embedded in the insulating member 502, and the first end of the conductive hook 503 extends to the outer periphery of the insulating member 502 to be electrically connected to the coil 2012.

The conductive member 504 is disposed around the outer periphery of the insulating member 502 and located between the second bearing 401 and the fourth bearing 403, and the second end of the conductive hook 503 extends to the outer periphery of the insulating member and is electrically connected to the conductive member 504.

Optionally, conductive member 504 includes: a fixed member 5041 and a rotating member 5042.

The rotating component 5042 is disposed on the second rotating shaft 202 and is fixedly connected to the second rotating shaft 202, and when the second rotating shaft 202 rotates, the rotating component 5042 rotates along with the second rotating shaft 202. The insulating member 502 is disposed between the rotating member 5042 and the second shaft 202, and the second end of the conductive hook 503 is electrically connected to the rotating member 5042. The fixing member 5041 is fixedly disposed in the accommodating cavity and insulated from the housing 300 to prevent the power device 10 from leaking electricity.

The fixed member 5041 is in sliding contact with the rotating member 5042 and the fixed member 5041 is electrically connected to an electrical conductor such that electrical conduction is provided between the fixed member 5041 and the rotating member 5042.

The fixing member 5041 includes a bracket (not shown) and a carbon brush (not shown). The support is fixedly arranged in the accommodating cavity and is insulated, the carbon brush is arranged on the support and is electrically connected with the electric lead, and the carbon brush is contacted with the rotating piece and is electrically conductive.

The rotating part 5042 rotates along with the second rotating shaft 202, and the carbon brushes are in continuous contact with the rotating part 5042 while the rotating part 5042 rotates relatively, so that the rotating part 5042 and the fixed part 5041 can still be electrically connected when the rotating part 5042 and the fixed part 5041 rotate relatively.

Optionally, a conductive metal is disposed between the fixed 5041 and the rotating 5042 such that the fixed 5041 and the rotating 5042 are electrically conductive. Specifically, the conductive metal is provided between the inner peripheral side of the fixed member 5041 and the outer peripheral side of the rotating member 5042, and the fixed member 5041 and the rotating member 5042 are slid and electrically connected by the conductive metal, so that the fixed member 5041 and the rotating member 5042 are electrically connected when relative rotation occurs. Specifically, one side of the fixed part 5041 close to the fixed part 5041 is provided with an annular sliding groove around the axial direction of the fixed part, one side of the rotating part 5042 close to the fixed part 5041 is provided with an annular sliding rail around the axial direction of the rotating part, wherein the annular sliding rail is inserted into the annular sliding groove, and the annular sliding rail and the annular sliding groove can rotate mutually. The conductive metal is arranged between the outer side wall of the annular sliding rail and the inner side wall of the annular sliding groove, and the annular sliding rail and the annular sliding groove are electrically connected through the conductive metal, so that the fixed part 5041 and the rotating part 5042 can still keep electrical connection when relatively rotating.

Optionally, the conductive assembly 500 further comprises a seal 5045. Two sealing grooves are further formed in the two sides of the fixed part 5041 in the axial direction, wherein at least two sealing elements 5045 are uniformly arranged in the two sealing grooves of the fixed part 5041 respectively to seal a space between the fixed part 5041 and the rotating part 5042 and prevent short circuit caused by leakage of conductive metal between the annular sliding rail and the annular sliding groove. In this embodiment, the conductive metal is liquid metal during operation, and by providing the sealing member 5045, it is able to avoid short circuit caused by leakage of the conductive metal and failure caused by the fact that the fixing member 5041 and the rotating member 5042 cannot be electrically connected due to leakage of the conductive metal. The sealing member 5045 may be an oil seal member, an O-ring, or the like, which has good sealing performance, and is not particularly limited herein.

According to the difference of the number of phases of the electromagnetic assembly 201 (for example, in a three-phase asynchronous motor, the number of phases of the electromagnetic assembly 201 is three, which is only illustrated here and is not limited specifically to the number of phases of the electromagnetic assembly 201 in the present application), a plurality of sets of the conductive members 504 corresponding to the number of phases are arranged on the second rotating shaft 202 along the axial direction of the second rotating shaft 202 in the manner described above. Wherein, the conductive members 504 of each group are spaced apart from each other and insulated. Correspondingly, a corresponding number of conductive hooks 503 are disposed on the insulating member 502 for electrically connecting each set of conductive members 504 with each phase of the electromagnetic assembly 201. For example, as shown in fig. 1, the power device 10 includes three sets of conductive devices 504, and each set of conductive devices 504 is electrically connected to each phase of the electromagnetic assembly 201 through a conductive hook 503, so that the power device 10 operates normally.

Optionally, the power device 10 further includes: a first seal 600 and a second seal 601.

The first seal 600 is disposed between an inner wall of the first opening and the first rotation shaft 102. Specifically, an inner sidewall of the housing 300 near an end surface of the first opening is recessed along a radial direction of the first rotating shaft 102 to form a first sealing groove, wherein the first sealing element 600 is disposed in the first sealing groove and is used for sealing a gap between the inner wall of the first opening and the first rotating shaft 102;

the second sealing member 601 is disposed between an inner wall of the second opening and the second rotating shaft 202. Specifically, an inner sidewall of the housing 300 near an end surface of the second opening is recessed along a radial direction of the second rotating shaft 202 to form a second seal groove, wherein the second seal 601 is disposed in the second seal groove for sealing a gap between the inner sidewall of the second opening and the second rotating shaft 202.

The power device 10 makes the gaps between the first rotating shaft 102 and the second rotating shaft 202 and the housing 300 perfectly sealed by the first sealing element 600 and the second sealing element 601, so as to effectively prevent impurities such as water mist or dust from penetrating into the accommodating cavity, thereby effectively ensuring the stable operation of the power device 10. The first seal 600 and the second seal 601 may be oil seals, O-rings, or other seals with good sealing performance, and are not limited specifically here.

Unlike the prior art, the present application provides a power device 10, wherein the power device 10 includes a first rotor assembly 100, a second rotor assembly 200 and a housing 300. The first rotor assembly 100 includes a magnetic member 101 and a first rotating shaft 102 fixedly connected to the magnetic member 101, and the second rotor assembly 200 includes an electromagnetic assembly 201 and a second rotating shaft 202 fixedly connected to the electromagnetic assembly 201. The magnetic member 101 is enclosed outside the electromagnetic assembly 201, and the magnetic member 101 and the electromagnetic assembly 201 are acted by magnetic force to enable the first rotating shaft 102 and the second rotating shaft 202 to rotate relatively, that is, the magnetic member 101 and the electromagnetic assembly 201 are enabled to completely convert an interaction force into a torque of the first rotating shaft 102 and the second rotating shaft 202 through a relative rotatable relationship between the first rotating shaft 102 and the second rotating shaft 202, so as to improve performance of the power device 10. Meanwhile, the first rotating shaft 102 and the second rotating shaft 202 are disposed in the accommodating cavity of the housing 300, respectively extend from the first opening and the second opening of the housing, and are connected to different loads, so as to effectively improve the driving efficiency of the power device 10. Furthermore, the power of the power device 10 is directly output through the first rotating shaft 102 and the second rotating shaft 202, so that the overall structural size of the housing 300 is effectively reduced, and further, the overall structural size and the weight of the power device 10 are reduced, thereby improving the propelling efficiency of the power device 10 and effectively reducing the noise of the power device 10.

The present application also proposes a propeller 20, as shown in fig. 1, the propeller 20 comprising the power plant 10 described above.

Optionally, the propeller 20 further comprises: a first propeller 700 and a second propeller 701.

The hub of the first propeller 700 is provided with a first groove, and the first end of the first rotating shaft 102 is embedded in the first groove, wherein the first rotating shaft 102 may be connected and fixed with the first propeller 700 through a structure capable of transmitting torque force, such as a spline, a key slot, a flat position, and the like, which is not limited specifically herein.

The hub of the second propeller 701 is provided with a second groove, and the first end of the second rotating shaft 202 is embedded in the second groove, wherein the second rotating shaft 202 can be connected and fixed with the second propeller 701 through a structure capable of transmitting torque force, such as a spline, a key slot, a flat position, and the like, which is not limited specifically herein.

The blade screw structures of the first propeller 700 and the second propeller 701 are opposite, so that the first propeller 700 and the second propeller 701 of the propeller 20 can provide the same propelling force in the same propelling direction while rotating in opposite directions. Meanwhile, the above functional structure of the power device 10 makes the internal forces applied to the propeller 20 balance with each other, thereby ensuring smooth operation of the propeller 20.

It should be noted that, with the above-mentioned propeller 20 structure, only the torque performance of the first propeller 700 and the second propeller 701 needs to be designed to be consistent, and the rotating speeds of the two output shafts at the two ends can be respectively reduced to half of the original rotating speeds, so as to achieve the purpose of reducing the rotating speeds, so that the rotating speeds of the first propeller 700 and the second propeller 701 become low, and further the performance of the first propeller 700 and the second propeller 701 is improved. Further, the power device 10 is directly connected to the first propeller 700 and the second propeller 701, so that the problems of noise caused by a speed reducer and other transmission mechanisms and excessive occupied space volume can be effectively reduced, and the driving efficiency of the propeller 20 can be effectively improved.

The present application also proposes a water device comprising the above-mentioned propeller 20.

It should be noted that the drawings are only for illustrating the structural relationship and the connection relationship of the product of the present invention, and do not limit the specific structural dimensions of the product of the present invention.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.

Claims (15)

1. A power plant, comprising:

the first rotor assembly comprises a magnetic part and a first rotating shaft fixedly connected with the magnetic part;

the second rotor assembly comprises an electromagnetic assembly and a second rotating shaft fixedly connected with the electromagnetic assembly, the magnetic part is arranged outside the electromagnetic assembly in a surrounding mode, and the magnetic part and the electromagnetic assembly mutually perform magnetic force action so that the first rotating shaft and the second rotating shaft can rotate relatively;

the casing, be provided with a holding chamber and with first opening and the second opening of holding chamber intercommunication and relative setting, first rotor subassembly reaches the second rotor subassembly all sets up the holding intracavity, just the first end of first pivot is followed first opening extends to outside the casing to as a load drive shaft, the first end of second pivot is followed the second opening extends to outside the casing, in order as another load drive shaft.

2. The power unit according to claim 1, wherein the second rotating shaft and the first rotating shaft are arranged along an axial direction of the first rotating shaft and are coaxially arranged.

3. The power unit of claim 2, wherein the first shaft further defines a second end disposed opposite the first end of the first shaft, the first rotor assembly further comprising:

the barrel is provided with a first end and a second end which are oppositely arranged, the first end of the barrel is arranged outside the second end of the first rotating shaft in a surrounding mode and is fixedly connected with the first rotating shaft, the second end of the barrel is arranged on the outer peripheral side, deviating from the electromagnetic assembly, of the magnetic part in a surrounding mode and is fixedly connected with the magnetic part, and the second rotating shaft is rotatably connected with the barrel.

4. A power unit according to claim 3, wherein the second shaft is provided with a second end disposed opposite to the first end of the second shaft, the second end of the second shaft extending to the first end of the cylinder, and the power unit further comprises:

the first bearing is arranged between the first end of the cylinder and the second rotating shaft;

and the second bearing is arranged between the second end of the cylinder and the second rotating shaft.

5. The power plant of claim 1, wherein the second shaft further defines a second end disposed opposite the first end of the second shaft, the electromagnetic assembly comprising: the iron core is wound on a coil winding on the iron core, the iron core is wound outside the second end of the second rotating shaft and fixedly connected with the second end of the second rotating shaft.

6. The power plant of claim 5, further comprising:

and the conductive assembly is arranged in the accommodating cavity, is electrically connected with the coil winding and the electric lead respectively and is used for providing electric signals for the coil winding.

7. The power plant of claim 6, wherein the conductive assembly comprises:

the insulating piece is fixedly surrounded outside the second rotating shaft and is positioned between the iron core and the second opening of the shell;

the conductive hook is provided with a first end and a second end which are oppositely arranged, the conductive hook is embedded in the insulating part, and the first end of the conductive hook extends out of the insulating part and is electrically connected with the coil winding;

and the conductive piece is arranged around the insulating piece, and the second end of the conductive hook extends out of the insulating piece and is electrically connected with the conductive piece.

8. The power device according to claim 7, wherein the conductive member comprises a fixing member and a rotating member, the rotating member is disposed on the second rotating shaft, the insulating member is disposed between the rotating member and the second rotating shaft, the second end of the conductive hook is electrically connected to the rotating member, the fixing member is fixedly disposed in the accommodating cavity and insulated, the fixing member is electrically connected to the rotating member, and the fixing member is electrically connected to the electrical conductor.

9. The power unit of claim 8, wherein the fixing member includes a bracket and a carbon brush, the bracket is fixedly disposed in the receiving cavity and insulated from the receiving cavity, the carbon brush is disposed on the bracket and electrically connected to the electrical conductor, and the carbon brush contacts and conducts electricity with the rotating member.

10. The power unit of claim 8, wherein a conductive metal is disposed between the fixed member and the rotating member to allow electrical conduction between the fixed member and the rotating member.

11. The power plant of claim 1, further comprising:

a third bearing disposed between an inner wall of the first opening and the first rotation shaft;

and the fourth bearing is arranged between the inner wall of the second opening and the second rotating shaft.

12. The power plant of claim 1, further comprising:

a first sealing member provided between an inner wall of the first opening and the first rotation shaft for sealing a gap between the inner wall of the first opening and the first rotation shaft;

and the second sealing element is arranged between the inner wall of the second opening and the second rotating shaft and used for sealing a gap between the inner wall of the second opening and the second rotating shaft.

13. A propeller comprising a power plant according to any one of claims 1 to 12.

14. The propeller of claim 13, further comprising:

the propeller hub of the first propeller is provided with a first groove, and the first end of the first rotating shaft is embedded in the first groove;

the propeller hub of the second propeller is provided with a second groove, and the first end of the second rotating shaft is embedded in the second groove.

15. A water borne installation comprising a propeller as claimed in claim 13 or claim 14.

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