43results about "Dynamo-electric gears" patented technology

A magnetic modulator includes: a magnetic pole piece; a support portion disposed in an axial direction of the magnetic pole piece to rotationally support the magnetic pole piece; and a resin portion that integrates the magnetic pole piece and the support portion, in which at least one of both end surfaces of the magnetic pole piece in the axial direction is exposed.

The utility model provides a generator and a vehicle, the generator comprises a generator body, the generator body comprises a generator shell and a rotor shaft, and the generator shell is provided with heat dissipation holes; the heat dissipation fan is used for realizing ventilation of the heat dissipation holes and is arranged on the rotor shaft; the cleaning structure can perform a cleaning action to clean the heat dissipation holes; and the cleaning fan can be driven by wind power of the cooling fan to rotate so as to drive the cleaning structure, and the cleaning fan is connected with the cleaning structure. The cleaning structure is independently driven by the cleaning fan outside the generator body, the rotor shaft and the cleaning structure do not need to be connected, the rotor shaft cannot be broken due to eccentricity of the rotor shaft and the cleaning structure, and the situation that the rotor shaft is broken is reduced; in addition, wind power generated by rotation of the cooling fan enables the rotating speed of the cleaning fan to be small, power input abrasion between the cleaning fan and the cleaning structure can be reduced, the possibility that the cleaning structure loses the self-cleaning function due to the fact that the cleaning structure cannot rotate along with the cleaning fan is avoided, and then the cooling effect of the generator is guaranteed.

The application discloses a kind of permanent magnet coupler induction current self-regulating method and device and permanent magnet coupler for realizing soft start and overload torque limiting protection of equipment, and its features are that resistance is connected in series in two lead terminals of induction winding, the centrifugal force that centrifugal slider is received when being installed radially on inner rotor is different at different rotational speed of inner rotor, the resistance value of resistance connected in series in conductive loop including induction winding is automatically regulated, so that the induction current in conductive loop of induction winding is little changed under different induction electromotive force generated by induction winding under different working conditions of permanent magnet coupler, so that the transmission torque of permanent magnet coupler is automatically regulated, and it is changed in a very small range and tends to be constant, realizing soft start and overload torque limiting protection of equipment;The principle of the application is reliable, simple in structure, easy to realize, and can be widely applied to equipment such as belt conveyor, elevator and other equipment that need soft start, and various large inertia equipment such as ball mill, mixer, crusher and other equipment that need to improve starting performance.

A magnetic geared electrical machine includes: a stator; a magnetic pole piece rotor including a plurality of magnetic pole pieces disposed radially inward of the stator; an inner rotor including a plurality of rotor magnets, disposed radially inward of the plurality of magnetic pole pieces, and configured to rotate at a higher speed than the magnetic pole piece rotor; and a fan for cooling at least one of the stator, the magnetic pole piece rotor, or the inner rotor. The magnetic pole piece rotor further includes a power transmission shaft disposed on one side in an axial direction relative to the plurality of magnetic pole pieces, and configured to transmit rotational power to and from an external device. The fan is attached to the inner rotor on an opposite side to the power transmission shaft with the rotor magnet therebetween in the axial direction.

The disclosure relates to a double rotor machine (DRM) for selective transmission of mechanical power and / or generation of electrical power in a drive train of a vehicle typically comprises an input drive shaft, an input rotor and an output rotor coupled to an output drive shaft. In a preferred variation, the double rotor machine comprises the input drive shaft for mechanically coupling the double rotor machine to an internal combustion engine, said input drive shaft extending in an axial direction into a housing of the double rotor machine. Typically, the input rotor is me chanically interconnected to the input drive shaft and is arranged inside the housing rotatable about a common axis of rotation. The output rotor being arranged rotatable about the common axis of rotation and being mechanically interconnected to the output drive shaft passing through the housing for mechanically coupling the double rotor machine to a consumer of mechanical power.

The application discloses a kind of adjustable blade vertical axis ocean current energy conversion module and ocean current energy generating device, adjustable blade vertical axis ocean current energy conversion module is symmetrically set with the array of double adjustable blade vertical axis water turbine of guide vane, can realize the improvement of ocean current energy conversion efficiency, adjustable blade vertical axis ocean current energy conversion module is connected with flow velocity self-adapting power generation module and is installed in floating intelligent regulating platform to form ocean current energy generating device, axial flux permanent magnet synchronous generator is matched with electronic unit control system to form flow velocity self-adapting power generation module, so that the device generates electricity stably, the direction adjusting mechanism loaded by floating intelligent regulating platform can meet the direction change demand of adjustable blade vertical axis ocean current energy conversion module.The application solves the problems of low energy conversion efficiency and unstable power generation of existing ocean current energy generating device, realizes the improvement of ocean current energy conversion efficiency and power generation quality, and enhances the survivability of device.

The present disclosure provides a direct drive electric variable speed turbofan comprising: a first magnetic gearbox assembly connected to a fan of a turbofan engine; a second magnetic gearbox assembly connected to a spool of the turbofan engine; and a speed controller configured to adjust a rotational speed of the fan based on a rotational speed of the spool by selectively coupling and decoupling the first magnetic gearbox assembly with the second magnetic gearbox assembly. In various aspects, the first magnetic gearbox assembly or the second magnetic gearbox assembly comprises a permanent magnet array, while a different one of the first magnetic gearbox assembly or the second magnetic gearbox assembly comprises a rotor winding separated from the permanent magnet array by an air gap; and the speed controller is configured to selectively couple and decouple the first magnetic gearbox assembly and the second magnetic gearbox assembly with each other via control of switches in a winding circuit having the rotor winding.

The application relates to a transmission device which comprises a motor and a speed reducer and further comprises a magnetic coupler connecting the motor and the speed reducer; the magnetic coupler comprises a driving cylinder and a driven cylinder; the driving cylinder comprises a bearing cylinder, a heat dissipation assembly and a first magnet; the heat dissipation assembly comprises a mounting hole, a heat dissipation piece and a driving ring; the inner wall of the bearing cylinder is provided with the mounting hole; the mounting hole is provided with the heat dissipation piece; the heat dissipation piece comprises a fixed plate, a movable plate, a first screw rod and a gas guide pipe; the right side of the bearing cylinder is fixedly connected with a first connecting ring; the bearing cylinder is provided with the first magnet which is opposite to the mounting hole and is connected with the inner ring of the first connecting ring at the right end; the first magnet is in contact with the bearing cylinder through a convex ridge; the left part of the driven cylinder extends into the bearing cylinder and is connected with a second magnet which is opposite to the first magnet inside and outside. The application solves the problem that the high temperature generated by the coupler on the belt conveyor transmission device can affect the magnetism of the magnet.

The present disclosure relates to electromagnetically-controlled magnetic cycloidal gear assemblies configured to achieve enhanced torque capacity, and methods of operating same. In one example embodiment, a method includes sensing a position of a cycloid relative to a stator, where the stator includes a plurality of electromagnets, and the cycloid includes a plurality of permanent magnets. Also, the method includes determining respective torque characteristics concerning the respective electromagnets based upon the sensed position, where the respective torque characteristic that is determined concerning each respective one of the electromagnets is indicative of a respective relative position of the respective electromagnet in relation to a respective closest one of the permanent magnets. The method additionally includes outputting from a controller, for receipt respectively at least indirectly by the respective electromagnets or respective control devices coupled thereto, a plurality of output signals respectively based at least in part upon the respective torque characteristics.

A position of a magnetic pole piece (54a) in an axial direction is easily managed. A magnetic modulator (50) includes the magnetic pole piece (54a), an output shaft portion (51) and a bearing support ring (55) which are disposed in the axial direction of the magnetic pole piece (54a) to rotationally support the magnetic pole piece (54a), and a resin portion (56) that integrates the magnetic pole piece (54a), the output shaft portion (51), and the bearing support ring (55). At least one of both end surfaces (54c) in the axial direction of the magnetic pole piece (54a) is exposed. In this manner, an axial position of an end surface (54c) of the exposed magnetic pole piece (54a) can be directly measured.

A power transmission device is provided with an input shaft (20), a first output shaft (40), a second output shaft (50), and an output shaft switching unit (25). The input shaft is rotated by input of a driving force. The first output shaft is rotated by the driving force transmitted from the input shaft. The second output shaft is disposed at a different position from the first output shaft and rotates by the driving force transmitted from the input shaft. The output shaft switching part is switched between a first output state and a second output state. The first output state restricts rotation of the second output shaft based on the driving force and allows rotation of the first output shaft based on the driving force. The second output state restricts rotation of the first output shaft based on the driving force and allows rotation of the second output shaft based on the driving force.

The present description relates to an electrical machine (21) comprising: a stator (19c) having an internal surface (190c) delimiting a cavity centered on an axis of rotation (X'') of the electrical machine; a plurality of first electromagnets (57) configured to generate a first magnetic field, the plurality of first electromagnets (57) being fixed to the stator (19c); a magnetic generation device (50) configured to generate a second magnetic field, the magnetic generation device (50) being fixed to the stator (19c); a magnetic excitation device (51); and a first shaft (19a) extending within the cavity along the axis of rotation (X''); and a second shaft (19b) extending within the cavity, along the axis of rotation (X''), being concentric with the first shaft (19a);in which one of the first and second shafts (19a, 19b) is configured to generate a third magnetic field, following excitation by the magnetic excitation device (51), the third magnetic field being synchronized with: the first magnetic field so as to implement an electromechanical conversion between a mechanical power from one of the first shafts (19a) and the second shaft (19b), and an electrical power from the plurality of first electromagnets (57); and the second magnetic field so as to transmit a torque between the first shaft (19a) and the second shaft (19b). Figure for the abstract: Figure 11b;

To provide turbofan engines configured to convert mechanical rotational energy from turbine-driven spool shafts into mechanical rotational energy in a fan via electromagnet forces.SOLUTION: The present disclosure provides a direct drive electrically-geared turbofan comprising: a first magnetic gearbox assembly 210A connected to a fan 150; a second magnetic gearbox assembly 210B connected to a spool shaft 160A of a turbofan engine; and a speed controller configured to adjust a rotational speed of the fan by selectively coupling and decoupling the magnetic gearbox assembly. The magnetic gearbox assemblies include a permanent magnet array, while including a rotor winding separated from the permanent magnet array by an air gap 230. The speed controller is configured to selectively couple and decouple the magnetic gearbox assemblies mutually by controlling a switch in a winding circuit with the rotor winding.SELECTED DRAWING: Figure 2C

The invention discloses a design and implementation method of a high-performance modular magnetic lead screw and the magnetic lead screw, and belongs to the technical field of magnetic transmission. The method comprises the following steps: discretizing a target spiral magnetic circuit, establishing a three-dimensional finite element model, and iteratively optimizing the number of blocks of an arc-shaped permanent magnet; prefabricated mounting holes are formed in the arc-shaped permanent magnet blocks, the rotor base body and the rotor base body respectively; a fine model containing fastener details is established, and the mechanical strength and electromagnetic performance of the fine model are simulated and verified; whether the internal operation space of the assembly meets the tool accessibility and maintenance requirements or not is evaluated, and different assembly processes are adopted for assembly and installation. The full-process closed-loop optimization and decision-making of the magnetic lead screw from design, simulation to assembly are realized, and the performance, the reliability and the maintainability of the product are remarkably improved.

To eliminate the need for a torque sensor.SOLUTION: A magnetic modulation gear device 30 includes an input shaft 23, an output shaft 32b that is shifted and output with respect to the input shaft 23 through a reduction gear unit, an input shaft-side sensor 35 that measures a rotation angle on the input shaft 23 side, and an output shaft-side sensor 36 that measures a rotation angle on the output shaft 32b side. For example, a drive device 1 includes the magnetic modulation gear device 30, a drive source 20 that inputs torque to the input shaft, and a control device 40 that controls the amount of operation of the drive source to achieve a target torque on the basis of the measured rotation angle of the input shaft side and the measured rotation angle of the output shaft side. The drive device 1 controls the torque on the output shaft side without using a torque sensor.SELECTED DRAWING: Figure 1

A device for generating electricity by means of kinetic energy of an object is a brand-new electricity generating mode. The driving motor drives a group of kinetic energy generation balancing weights with huge mass to enable the kinetic energy generation balancing weights to rotate at a high speed, so that strong kinetic energy is generated, when the kinetic energy generation balancing weights reach a certain rotating speed, the clutch is combined, and the strong kinetic energy is input into the generator through the transmission shaft, the clutch and the kinetic energy input shaft to generate electricity. And a group of kinetic energy storage balancing weights are arranged between the generator and the kinetic energy input shaft and are used for storing transmitted kinetic energy and maintaining the rotating speed of the generator to be stable. Kinetic energy is continuously converted into electric energy, the rotating speed of the kinetic energy generation balancing weight is continuously reduced, the rotating speed of the generator is also continuously reduced, after the rotating speed is reduced to a certain rotating speed, the clutch is disconnected, the driving motor drives the kinetic energy generation balancing weight to rotate again, the kinetic energy generation balancing weight rotates at a high speed again, and after the rotating speed reaches a certain rotating speed, the clutch is combined again. And the next kinetic energy input power generation process is completed.

The maintenance-free long-service-life permanent magnet coupler comprises a first flange plate, a driving shaft is fixedly connected to the side wall of the first flange plate, a heat conduction shell is rotationally connected to the outer side of the driving shaft, and two limiting semi-rings which are symmetrically distributed are slidably connected to the side wall of the heat conduction shell; by arranging the limiting semi-rings and rotating the rotating disc, the rotating disc drives the screw rod to rotate, the screw rod and the connecting frame do threaded motion, the connecting frame slides on the outer side of the heat conduction shell, the heat conduction shell limits the connecting frame, the connecting frame is prevented from rotating, the heat conduction shell is prevented from rotating, the heat conduction efficiency is improved, and the service life of the heat conduction shell is prolonged. When the connecting frame moves, the limiting semi-ring and the sealing plate are driven to move, the sealing plate seals the heat conduction shell, the limiting semi-ring limits the driven shaft, meanwhile, the limiting semi-ring moves to different heights to limit the driven shaft at different positions, and the first fixing plate and the second fixing plate are used for installing the screw rod.

The system comprises a first part and a second part arranged to be relatively movable relative to the first. wherein the first part comprises a sword part (2) extending in the direction of movement, in particular of an elongated design, wherein the second part comprises at least one rotatably mounted, driveable disk (1) wherein the axis of rotation is oriented perpendicular to the direction of movement, wherein the disk (1) has permanent magnets (20, 21) on its circumference, the magnetization direction of which is oriented in the radial direction or in a direction opposite to the radial direction, wherein the magnetization direction of each permanent magnet (20, 21) is opposite to the permanent magnet (20, 21) nearest in the circumferential direction, wherein the sword part (2) is made of a stamped sheet steel part and has a pole structure along the direction of movement such that the driving force is generated when the permanent magnets (20, 21) rotate past the pole structure according to the reluctance motor principle, wherein the second part has another disk (1) fitted with permanent magnets (20, 21), wherein the sword part (2) is arranged between the discs (1) wherein the pole structure has teeth that are evenly spaced apart from each other in the direction of movement, wherein the teeth have a tooth head that widens towards the respective disc (1), wherein the permanent magnets (20, 21) have a circumferential distance to their nearest neighboring permanent magnet (20, 21) which is essentially equal to, and in particular exactly equal to, the distance between the poles of the pole structure.

The invention relates to an improved liquid cooled device for magnetically transferring large torques with a primary rotating member and a secondary rotating member as stated in US 7294947. The primary rotating member has permanent magnets and the secondary rotating member has electrically conductive material. Both rotors are encapsulated in a liquid tight housing enclosure and both rotors are liquid cooled to allow power transfer of over 260 KW and 1000 ft. lb. torques to be achieved.

The system comprises a first part and a second part arranged to be relatively movable relative to the first. wherein the first part comprises a sword part (2) extending in the direction of movement, in particular of an elongated design, wherein the second part comprises at least one rotatably mounted, driveable disk, the axis of rotation being oriented perpendicular to the direction of movement, wherein the disk has permanent magnets (20, 21) on its circumference, the magnetization direction of which is oriented radially or in a direction opposite to the radial direction, wherein the magnetization direction of each permanent magnet (20, 21) is opposite to the permanent magnet (20, 21) nearest in the circumferential direction, wherein the sword part (2) has a pole structure along the direction of movement such that the propulsive force can be generated when the permanent magnets (20, 21) rotate past the pole structure, wherein the pole structure has ferromagnetic regions (40) that are uniformly spaced apart from each other in the direction of movement, wherein the ferromagnetic areas (40) are designed to be wider towards the axis of rotation of the disk.

To provide a magnetic pole piece unit with improved strength and a magnetically geared electric machine.SOLUTION: A magnetic pole piece unit includes an annular unit, an inner cover disposed on an inner peripheral surface of the annular unit, an inner plate disposed on the inner circumferential surface of the inner cover, and disposed so as to overlap at least a connecting portion in an axial direction, an outer cover disposed on an outer peripheral surface of the annular unit, an outer plate disposed on the outer peripheral surface of the outer cover, and disposed so as to at least partially overlap the inner plate in the axial direction, and a fastening member including shaft portion arranged to penetrate the outer plate, the outer cover, the connecting portion of the annular unit, the inner cover, and the inner plate in a radial direction of the annular unit.SELECTED DRAWING: Figure 4A

The present invention belongs to the power-assisted techniques of bicycles. Disclosed are a magnetic transmission speed-reduction apparatus and a mid-drive electric motor for a power-assisted bicycle. The existing mid-drive electric motors have a large size, low rotation efficiency and high operating noise. In the present invention, a modulation ring is placed between a first rotor and a first stator, and power is transmitted by means of a magnetic-field coupling effect; a first air gap is formed between the modulation ring and the first stator, and a second air gap is formed between the modulation ring and the first rotor; during operation, an electric motor drives the first rotor to rotate, and magnetic fields generated by the first rotor and the first stator are each modulated by the modulation ring to generate a series of spatial harmonic magnetic fields at the first air gap and the second air gap; and by means of magnetic-field coupling, stable output torques are generated on the modulation ring, thereby achieving the effects of speed reduction and torque amplification. Due to the friction-free characteristic of magnetic transmission and the ultra-high torque density brought about by the magnetic flux concentration structure and high-magnetic-permeability material of the present invention, the system efficiency is improved, and the operating noise is reduced.

The invention relates to the technical field of vacuum pump driving, in particular to a vacuum pump direct drive device which comprises a base, a permanent magnet synchronous motor, an electromagnetic coupler, a support and a vacuum pump. The electromagnetic coupler is composed of an electromagnetic base and an electromagnetic ring slidably arranged on the electromagnetic base in a sleeving mode, the electromagnetic base is provided with a power connection end, and power supply is achieved through a sliding conductive structure. The magnetic shaft is assembled at the end of the vacuum pump transmission shaft, arc neodymium iron boron permanent magnets are evenly distributed on the periphery of the magnetic shaft, the polarities of the arc neodymium iron boron permanent magnets are arranged alternately, the magnetic shaft is sleeved with the electromagnetic ring, and non-contact magnetic driving is achieved. The beryllium copper alloy elastic contact on the inner wall of the electromagnetic ring ensures stable electrification in rotation, and is suitable for a vacuum system with high-cleanliness and high-reliability requirements.

The invention discloses a magnetic rotating shaft suitable for being assembled on a vacuum cavity. The magnetic rotating shaft comprises an outer magnet, an outer mounting body for mounting the outer magnet, an inner magnet magnetically coupled with the outer magnet, an inner mounting body for mounting the inner magnet and a cylinder, wherein one end of the cylinder is an open end, and the other opposite end of the cylinder is a closed end. The open end of the barrel is assembled in the vacuum cavity in a sealing fit manner; the inner mounting body is rotatably assembled in the cylinder body, and a shifting structure arranged in the vacuum cavity is arranged on the inner mounting body; the inner magnet is mounted at the position, far away from the open end of the barrel, of the inner mounting body; the outer installation body is located outside the barrel and rotatably installed on the barrel, and the outer magnet is installed on the outer installation body and arranged towards the open end away from the barrel. According to the magnetic rotating shaft, the defect that an existing magnet is demagnetized due to long-time high temperature is overcome. In addition, the invention also discloses a transmission mechanism for the image intensifier.

The utility model discloses an explosion-proof safety permanent magnet coupler which comprises a permanent magnet coupler body, the permanent magnet coupler body comprises an input shaft body and an explosion-proof shell, one side of the input shaft body is in bolted connection with two sets of semi-ring fixing blocks, one sides of the two sets of semi-ring fixing blocks are fixedly connected with a fixing shell, and the other sides of the two sets of semi-ring fixing blocks are fixedly connected with the explosion-proof shell. The device comprises a fixing shell, a containing cavity is formed in the fixing shell, a receding groove is formed in the fixing shell, one end of the receding groove penetrates through the fixing shell, extension plates are slidably inserted into the receding groove, and the two extension plates are semicircular. According to the permanent magnet coupler, the extension plate can slide in the receding groove, flexible adjustment can be conducted according to the distance between the driving shaft and the driven shaft, through modular design, the permanent magnet coupler body and the driving shaft can be conveniently installed and fixed, and the coupler body has better use flexibility and convenience.

The invention relates to a brushless electromagnetic coupling. A shaft extension end of a prime motor is in non-contact coupling with a shaft extension end of a generator through the electromagnetic coupling; the exciter rotor, the rotary rectifier, the piezoresistor, the magnetic pole iron core on the generator side of the electromagnetic coupling and the coil are coaxially installed, and the electromagnetic coupling controller is connected with the electromagnetic coupling exciter and the generator. The electromagnetic coupling controller controls the exciter and the rotary rectifier to provide a working power supply for the pole coil on the electromagnetic coupling generator side to establish a magnetic field, and the magnetic field is coupled with a magnetic field established by the permanent magnet of the electromagnetic coupling on the prime motor side to realize transmission of electromagnetic torque from the prime motor to the generator. Compared with a traditional rigid and elastic coupler and a traditional permanent magnet coupler, the brushless electromagnetic coupler is adjustable in torque, high-quality transmission of electromagnetic torque is achieved, the brushless electromagnetic coupler can be decoupled from a prime mover when output of the generator is suddenly short-circuited, the generator can be rapidly shut down after driving of the prime mover is removed, and short-circuit protection is achieved.

The application relates to the motor technical field and discloses a direct-connection-installed motor quick-change structure for a motor end, which comprises a first magnetic coupling, a first fixing piece and a first clamping piece. The first magnetic coupling can be connected with an output shaft of the motor; the first fixing piece is arranged at the output end of the motor and is sleeved outside the first magnetic coupling; and a first positioning structure is arranged at the connecting end of the first fixing piece; and the first clamping piece is arranged on the first positioning structure. The motor quick-change structure of the embodiment of the application is applied to the motor end and is used in cooperation with the motor quick-change structure applied to a driven end, the magnetic coupling and the clamping structure are used to realize the functions of quick docking, locking and quick removal. The non-contact torque transmission and the super-torque slip function are combined, the connection is more reliable, the modular design is simple in structure, high in efficiency and strong in universality.

The invention relates to a brushless outer-rotation dual-output heat dissipation and speed reduction and magnetic coupling system integrated fan. The brushless outer-rotation dual-output heat dissipation and speed reduction and magnetic coupling system integrated fan comprises a first fan blade assembly, a motor, a planetary speed reduction mechanism, a magnetic force output assembly and a magnetic coupling system. The motor comprises a stator assembly and an outer rotor assembly, a middle hole of the first fan blade assembly is sleeved and fixed on a motor rotating shaft, a first fan blade hub of the first fan blade assembly is arranged on the outer side of the peripheral wall of a motor shell, and the first fan blade assembly and the outer rotor assembly synchronously rotate; a rotating shaft of the outer rotor assembly penetrates out of one end of a base of the stator assembly and is fixedly connected with a sun gear of the planetary speed reduction mechanism, the planetary speed reduction mechanism and the magnetic force output assembly are fixedly connected through a connecting shaft and rotate synchronously, and deep integration of heat dissipation and driving functions is achieved through integrated structural design. The technical problems of low system integration level, poor heat dissipation stability, insufficient control precision, large occupied space and the like in the prior art are solved.

An electric motor or engine, and more particularly to a planetary motor or engine, or to a hybrid planetary and axial / radial flux motor or engine that are controlled by a control system that combines a planetary gear system with an axial / radial flux motor to improve and manage torque output more efficiently than with conventional axial or radial flux motors.