92 results about "Rotor design" patented technology

The invention discloses a device and a method for simulating heat exchange and friction resistance measurement of an aviation high-speed motor under different working conditions, and relates to the field of heat management of high-speed rotating equipment. An additional heating sheet is attached to the outer surface of the inner rotor, and different surface structures are detachably assembled on the outer rotor to form a stator and rotor slit flow channel boundary; cooling liquid forms one-inlet and one-outlet forced convection through the radial through hole of the end cover. The rotating speed larger than or equal to 20,000 rpm, runner pressure drop and temperature data are synchronously collected through an axle load type sensor, and the heat exchange coefficient, the flow resistance coefficient and the friction resistance coefficient are calculated in real time based on energy conservation, a Darcy formula and a torque empirical formula. A real rotor surface structure is reproduced under the condition of high-speed rotation, working medium leakage is restrained through mechanical sealing, and runner blockage caused by centrifugal deformation of the surface structure is prevented through the outer rotor designed in an integrally-formed mode; the obtained convective heat transfer-resistance coefficient-friction resistance coefficient all-parameter curved surface database can guide optimization of the cooling flow channel of the aviation motor.

The utility model belongs to the technical field of agricultural unmanned aerial vehicles, and particularly relates to a bionic agricultural pesticide spraying aircraft. Comprising a fuselage and n supporting legs evenly distributed around the fuselage, n is an even number larger than or equal to 4, and each supporting leg is provided with a set of propellers driven by a motor; a plurality of independent pesticide bins are arranged in the machine body, an outlet of each pesticide bin is connected with a mixing box in the machine body through a water path, a metering pump is connected into the water path, a stirring device is arranged in the mixing box, a plurality of nozzles are evenly distributed on the periphery of the machine body, an outlet pipeline of the mixing box is divided into branches with the same number as the nozzles, and the branches are connected with the nozzles in a one-to-one mode. A booster pump is mounted on the branch; depth cameras are distributed outside the fuselage and used for acquiring environment images, and the aircraft controls a flight path according to the environment images; the unmanned aerial vehicle adopts a partitioned pesticide bin and octopus bionic eight-rotor design, and has high pesticide mixing capacity and stable flight control performance.

The invention belongs to the field of rotor design, particularly relates to a high-speed built-in permanent magnet rotor design method, system and equipment based on a stress analysis model, and aims to solve the problem that the structural strength and electromagnetic performance of a high-speed built-in permanent magnet synchronous motor rotor are difficult to collaboratively optimize in the prior art. The method comprises the steps of determining the axial length and the outer diameter of a rotor according to a motor torque demand and an assembly space, and ensuring that a critical rotating speed is higher than a target limit value through dynamic verification; decomposing the rotor into pole shoe, permanent magnet and slotting areas, calculating centrifugal force in different areas, and superposing to obtain a total load; establishing a corresponding stress boundary equation set for a non-magnetic bridge, single / combined magnetic bridge or sheath composite structure; and solving the equation set based on the target rotating speed, and synchronously optimizing the sheath thickness, the magnetic bridge width and the interference magnitude parameter by using the intersection point of the isorotation speed line and the electromagnetic-mechanical characteristic curve. The problem of contradiction between size parameters and performance in traditional design is solved, and calculation efficiency and precision are both considered.

The application discloses a small airship device and a control method for automatic modeling of indoor three-dimensional objects, and belongs to the field of indoor aircraft intelligent inspection and three-dimensional perception systems. The airship adopts a four-rotor design arranged in layers. The upper vertical rotors control horizontal forward and backward movement and turning, and the lower horizontal rotors adjust the lifting force to realize lifting and hovering, thereby realizing multi-degree-of-freedom decoupling control. Attitude data are collected through an attitude sensor, and a PID algorithm is combined to realize automatic height maintenance. A communication module is used to build a WiFi local area network and run a Web control page, thereby realizing remote flight control of an intelligent terminal. On this basis, a preset flying-around program is executed to control the airship to automatically cruise at a constant radius and height around a target object, the rudders are synchronously adjusted to drive the camera to take multi-angle photographs, and image acquisition required for three-dimensional modeling is completed. The method combines manual and automatic control modes, and improves flight stability and modeling efficiency.

The invention belongs to the field of aero-engine rotor design, and provides an aero-engine two-dimensional thrust vectoring nozzle heat shield fixing and restraining structure which adopts a high-flexibility space curve notch design to actively control the rigidity of two dimensions of a bolt so as to release thermal deformation and avoid thermal damage to the structure caused by local overlarge thermal stress. And meanwhile, the material characteristics of metal rubber are used for improving the vibration absorption capacity of the aero-engine fixing and restraining structure, the problem that the vibration reduction capacity of an existing connecting structure is insufficient under airflow pulsation excitation is solved, and meanwhile the pulsation frequency band in the engine working condition is widened.

A rotating electric machine (100) in an internal rotor design for converting mechanical energy into electrical energy or vice versa, comprising: - a stator (2), - a rotor (4) inside the machine (100) which is enclosed by the stator (2) and is or can be arranged non-rotatably on or attached to a rotatably mounted drive / output shaft (5) such that the drive / output shaft (5) including the rotor is rotatable about an axis of rotation R, and - a rotor cooling device designed to guide cooling medium along at least a part of the inner surface and / or through at least a part of the interior of the rotor (4) for heat dissipation mainly by thermal convection or to bring it close to the inner surface of the rotor (4) for heat dissipation by thermal radiation, wherein the drive / output shaft (5) has a free shaft end (5a) and the rotor (4) is or can be fitted onto the free shaft end (5a) and the rotor (4) is cup-shaped.wherein the rotor cooling device further comprises a stationary hollow cooling nozzle (3) extending in the direction of the rotational axis R of the rotor (4) from the open side of the cup-shaped rotor (4) into the interior of the cup and having, at its end (3a) facing away from the rotor (4), connected or connectable to a cooling medium source for supplying cooling medium, and having a cooling medium outlet (19) for discharging the cooling medium to the outside of the machine, wherein the end (3b) of the cooling nozzle (3) facing the rotor (4) is open and rib- or blade-like projections (7) and a vane (8) for forced cooling are located on the outside (3c) of the cooling nozzle (3).

The invention discloses a reluctance rotor design method based on a streamline magnetic barrier and a motor, and belongs to the field of synchronous reluctance motors, a reluctance rotor comprises a magnetic barrier main body, a low-magnetic-conductance tail part and a separated magnetic island, and the design method comprises the following steps: drawing the streamline magnetic barrier main body according to the direction of a magnetic line of force of a d-axis magnetic field by taking increase of d-axis inductance and reduction of q-axis inductance as targets; in order to reduce the magnetic flux leakage of the rotor and reduce the influence on a d-axis magnetic circuit at the same time, the tail part of the magnetic barrier is subjected to narrow opening design, and the endpoint of the magnetic barrier main body and the endpoint of the magnetic barrier tail part are connected through a straight line or an arc to form a low-magnetic-permeability magnetic barrier tail curve; taking all design parameters of the rotor as optimization variables, selecting proper optimization targets and constraint conditions, establishing an optimization problem, and solving the optimization problem to obtain optimal design parameters; and selecting a new material or process mode to realize the integrity of the rotor, and completing the design of the reluctance motor based on the streamline magnetic barrier. According to the invention, the dq-axis reluctance difference can be increased, the salient pole ratio is improved, and the torque output capability of the synchronous reluctance motor is improved.

To provide a pumping device for conveying a fluid, the pumping device including a single-use device and a reusable device, and a method for operating the same.SOLUTION: A single-use device 2 is to be inserted into a reusable device 3 and includes two pump units 21, 22 in series, one behind the other. Each pump unit includes a rotor designed as a rotor for a bearingless motor, and can be magnetically levitated and driven without contact. The reusable device 3 includes a stator 31, 32 for each rotor which forms an electromagnetic rotary drive for rotating the rotor. Each stator is a bearing and drive stator with which the rotor can be magnetically driven without contact and magnetically levitated without contact with respect to the stator. An independent control device is provided for each stator, and can independently activate the stator.SELECTED DRAWING: Figure 1

The brake device (1) provided for a railway vehicle comprises at least one wheelset (99) having a wheelset axle (98), along which a wheelset axis (y) extends coaxially, and the brake device (1) comprises wheels (9, 9', 9'') directly or indirectly connected to the wheelset axle (98) and rotatable about a wheel axis (x), and comprises eddy current rotors (22A; 22B) connected to the wheels (9, 9', 9''), and the eddy current rotors (22A; 22B) and at least one friction brake (3; 3A, 3B) having a friction rotor (32; 32A, 32B; 92) connected to or integrated in the wheels (9, 9', 9'') and having a friction stator (31; 31A, 31B) displaceable relative to the friction rotor (32; 32A, 32B; 92). - the eddy current brake (2A; 2B) and the friction brake (3; 3A, 3B) can be sequentially actuated by a single actuation device (7) and drive device (8), said drive device (8) being connected to the actuation device (7) and controllable by a control unit (10); the eddy current rotor (22A; 22B) is designed as one piece or segmented, has a disk or ring shape, is aligned coaxially with the wheel axis (x) and is connected to one side of the wheel (9, 9', 9'') or is integrated into the wheel (9, 9', 9''); at least one eddy-current stator (21A; 21B) is designed as one piece or segmented and is displaceable in the direction of the wheel axis (x) in front of the eddy-current rotor (22A; 22B) or tiltable segment-by-segment relative to the eddy-current rotor (22A; 22B); - the wheels (9, 9', 9'') have a wheel rim (92) acting as a friction rotor (32) with a front surface (921) directed radially outward with respect to the wheel axis (x) acting as a braking surface, and the friction stator (31) is displaceable with respect to the front surface (921).

The invention discloses an integer slot permanent magnet motor rotor design method for reducing a segmented skewed pole angle, and the method comprises the following steps: determining the stator and rotor structures of a permanent magnet motor, the stator comprises a stator core and an armature winding, the rotor comprises a rotor core and a permanent magnet, and an air gap exists between the stator and the rotor; determining cogging torque harmonic components according to the slot-pole ratio of the permanent magnet motor; virtual slots are added on the outer surface of the rotor core, and the amplitude corresponding to the harmonic order of the cogging torque is improved; a rotor segmented skewed pole structure is adopted to suppress the cogging torque, the rotor is divided into a plurality of segments, the segmented skewed pole angle of the rotor is reduced, and the spatial phase difference of the topological structure of each segment of the rotor is set. According to the invention, the cogging torque can be effectively suppressed, and the defect that the average torque is reduced due to a relatively large skewed pole angle can be avoided.

The utility model relates to a motor stator rotation direction testing device, which comprises a computer, a main control board, a testing cable, a signal cable and a magnetic sensor group, the computer is connected with the main control board, one end of the testing cable and one end of the signal cable are both connected with the main control board, the other end of the testing cable is connected with a stator UVW lead, and the magnetic sensor group is connected with the testing cable. The other end of the signal cable is connected with the magnetic sensor, the magnetic sensor group is arranged in the stator, and the magnetic sensor group comprises two vertically arranged magnetic sensors. The magnetic sensor is small in size and wide in adaptive motor stator diameter range, does not need to be matched with a plurality of testing devices for different stators, cancels the design of a false rotor, does not have a rotating device, cannot fly out to hurt people, and is safe and relieved.

Systems and methods related to rotor design for high-speed applications using segmented magnets are disclosed herein. A rotor for an axial electric machine may include a rotor frame and a set of permanent magnets. In specific embodiments, a pattern of adhesive may adhere the magnets to the rotor frame. The adhesive may be in contact with an outer surface (away from the center of the rotor) of the magnets. In specific embodiments, a set of pockets may be formed in the rotor frame with the magnets being placed in the pockets. The magnets may include a set of flat outer faces that are in contact with the outer rim of the rotor frame. In specific embodiments, the magnets may be located between spokes on the rotor frame. The embodiments of the rotors described herein may be better suited for the forces of axial machine operation.

The invention relates to the technical field of high-temperature gas cooled reactors, and discloses a verification system and method for high-temperature gas cooled reactor fuel choke flow passage, and the verification system comprises a reaction section, a lifting section, a ball falling section, a gas supply assembly and a choke; the downstream of the lifting section is communicated with the upstream of the reaction section; the upstream of the ball falling section is communicated with the downstream of the reaction section; the air supply assembly is communicated with the upstream of the lifting section; the upstream of the flow plug is communicated with the downstream of the ball falling section, the downstream of the flow plug is communicated with the upstream of the lifting section, and a rotor of the flow plug is detachably mounted in the main body part; in the first state, the rotor is installed in the main body part, and the air supply assembly only supplies air to the lifting section, and in the second state, the rotor is detached from the main body part, and the air supply assembly supplies air to the lifting section and the ball falling section at the same time. According to the invention, through the design of the detachable rotor, rapid switching between flow choking and flow passing of the flow choking device is realized, the gas flow direction difference in the two states is determined, and a stable and reliable hardware basis is provided for verifying the feasibility of cancelling the flow choking device.

The tandem type unmanned helicopter comprises a rack, an oil tank is fixedly installed in the middle of the rack, an engine is fixedly installed at the position, located at one end of the rack, of one side of the oil tank, the oil tank is communicated and connected with the engine, and a power supply system is fixedly installed at the position, located at the other end of the rack, of the other side of the oil tank. An oil tank is arranged at the top of the rack, a transmission system is arranged above the oil tank and connected with an engine, rotor systems are arranged at the two ends of the top of the rack, the transmission system is connected with the rotor systems at the two ends at the same time, and an undercarriage is fixedly installed at the bottom of the rack. The loading capacity of the unmanned aerial vehicle is effectively improved, heavier goods can be carried to fly, the requirement of logistics transportation for large or heavy objects is met, meanwhile, the wind resistance of the unmanned helicopter is enhanced through the double-rotor design, stable flight can be kept under the complex weather condition, and the flight safety and reliability are improved.

The utility model discloses a Root's blower with torsional rotors, which comprises a casing and two rotors arranged in the casing. Each rotor is provided with a wheel blade part and rotating shafts protruding out of the two ends of the wheel blade part. More than two protruding circular blades are formed in the section direction of the wheel blade part, and the circular blades are uniformly distributed on the 360-degree circumference. A concave circular blade groove is formed between every two circular blades, the circular blade grooves are matched with the circular blades in outline, and the circular blades and the circular blade grooves are spirally twisted from one end of the wheel blade part to the other end of the wheel blade part. Due to the design of the torsion type rotor, gas conveying is smoother, gas pulsation and energy loss are reduced, conveying efficiency and stability are improved, noise and vibration are reduced, meanwhile, energy is saved by more than 15%, and the service life of the air blower is prolonged.

This invention provides a steering pump rotor designed to prevent detachment, belonging to the field of automotive parts technology. It solves the problem of existing steering pump rotors easily detaching. This anti-detachment steering pump rotor includes a stator and a rotor. The rotor surface has several slots, and blades are slidably connected to the inner cavity of each slot. Annular grooves are formed at the top and bottom of the rotor, and limiting rings are placed inside the inner cavities of these grooves. Sliding grooves that match the limiting rings are formed at the top and bottom of each blade. Several adjusting bolts are threaded through the inner wall of the limiting rings. This invention has the advantages of constraining the blades, preventing them from detaching, and allowing for fine adjustment of the blade positions according to actual usage.

The invention discloses a small airship device for indoor three-dimensional object automatic modeling and a control method, and belongs to the field of indoor aircraft intelligent inspection and three-dimensional sensing systems. The airship adopts a layered four-rotor design, an upper-layer vertical rotor controls horizontal advancing, retreating and steering, a lower-layer horizontal rotor adjusts lift force to realize lifting and hovering, and multi-degree-of-freedom decoupling control is realized. Attitude data are collected through an attitude sensor, and height automatic holding is achieved in combination with a PID algorithm. And a WiFi local area network is constructed by using the communication module, and a Web control page is operated, so that remote control of the intelligent terminal on flight is realized. On the basis, a preset flying-around program is executed, the airship is controlled to conduct fixed-radius and fixed-height automatic cruise around the target object, a steering engine is synchronously adjusted to drive a camera to conduct multi-angle shooting, and image collection needed by three-dimensional modeling is completed. According to the method, manual and automatic control modes are fused, and the flight stability and the modeling efficiency are improved.

This invention discloses a three-dimensional decoupled flux electromagnetic drive with an interlocking stator. It utilizes a radial rotor, a first axial rotor, and a second axial rotor to form air gap magnetic fields in the radial and axial directions of the stator, respectively. These air gap magnetic fields interact with the symmetrical currents in the C-shaped coil windings surrounding the interlocking stator structure to generate output torque and synchronous speed. Therefore, the three-rotor design effectively utilizes the motor end windings, increasing the air gap area for electromechanical energy conversion and torque density without increasing system volume. Simultaneously, the symmetrical air gap magnetic fields formed by the first and second axial magnetic pole arrays at both ends of the stator axial direction decouple the radial and axial fluxes, allowing for a reduction in the stator yoke thickness, even making it hollow, thus reducing cost and weight. The interlocking of the stator's axial and radial teeth further reduces winding length and increases the internal hollow area of ​​the motor and the axial air gap area for torque generation.

The present disclosure proposes a method and device for optimally designing the topology of a permanent magnet insertion type electric motor by considering maximum torque control performance per ampere and field-weakening control performance. According to the present disclosure, for a topology optimization-based design of an electric motor including a stator and a rotor and having a permanent magnet inserted into the rotor, a computer device is configured to calculate an optimal current control condition for the stator according to a structure of the rotor and to derive a topology optimization-based design of the rotor by applying the optimal current control condition.

The invention relates to the technical field of motors, in particular to a multifunctional disc type motor integrated system, application thereof and mobile terminal equipment. The disc type motor integrated system comprises a disc-shaped shell, a power component and functional components, the functional components comprise an eccentric wheel, a linear driving arm and a cooling fan, and the power component adopts a double-rotor design; the motor integrated system not only integrates multiple functions of vibration feedback, lens driving, heat dissipation and the like, but also can efficiently utilize the internal space of the mobile terminal equipment and improve the integration, is flexible in function switching, and can meet the use requirements of users. Functions originally required to be realized by three independent motors are integrated into one disc-type double-rotor motor, and more flexibility is provided for layout of other parts of the mobile terminal equipment. And meanwhile, the system also has the advantages of reduced energy loss, prolonged endurance time of mobile terminal equipment, low motor failure rate, high reliability, more accurate and efficient control, more simplified production process, higher assembly efficiency and the like.

The switching valve comprises a driving part, a valve body part and a control detection device, the driving part comprises a motor, the output end of the motor is connected with a coupler, the coupler is sleeved with a first deep groove ball bearing, the end, away from the motor, of the coupler is provided with a butt joint end, and the butt joint end is provided with a second deep groove ball bearing. The valve body part comprises a valve shell and a valve head, a valve rod is arranged in the valve shell in a penetrating mode, butt joint ends of the valve rod are correspondingly connected, the valve rod is sleeved with a spring assembly, the valve rod is detachably connected with a rotor through a first connecting piece, the rotor is provided with a plurality of flow channels, the valve head is detachably connected with a stator through a second connecting piece, and the stator is provided with a plurality of flow paths. According to the utility model, the stator and the rotor are designed to be detachably connected, so that the valve rod has the advantages of simplicity in maintenance and low maintenance cost, and the effect of prolonging the service life of a product and the effect of enhancing the competitiveness of the product are achieved by arranging the spring assembly between the coupler and the rotor on the valve rod correspondingly.

This invention belongs to the field of aero-engine rotor design and provides a distributed support and constraint structure for high-temperature thin-walled components. The structure includes a thin-walled component for an afterburner, a thin-walled nozzle component mounted on the tail end of the afterburner thin-walled component, and a component hinge assembly installed between the outer surface of the tail nozzle thin-walled component and the tail end of the afterburner thin-walled component. An electrically controlled telescopic assembly for the thin-walled component is provided between the outer surface of the afterburner thin-walled component and the outer ring surface of the tail nozzle thin-walled component. In this invention, with the assistance of the electrically controlled telescopic assembly and the hinge assembly, the thin-walled components can be supported and constrained while simultaneously improving their fatigue resistance by reducing friction. Furthermore, the structure of the thin-walled components is non-uniformly distributed along the axial / circumferential directions, achieving a non-coordinated design effect through environmental excitation and the thin-walled components.

A processing machine (01) for processing a substrate (02), wherein at least one alignment section (750) is arranged in front of at least one processing unit (600; 900) of the processing machine (01), wherein the at least one alignment section (750) has at least two consecutive transport sections (706) in the transport direction (T), wherein the at least one alignment section (750) has at least one individual drive (M E ) at least one transport section (706) of the transport sections (706), wherein the at least one single drive (M E ) the at least one transport section (706) of the transport sections (706) is designed to adjust axially, wherein the at least one individual drive (M E ) is designed to generate an axial force, characterized in that the at least one individual drive (M E ) is designed as a direct drive, such that the at least one individual drive (M E) has at least one stator (738) and at least one rotor (737) designed as a drive shaft (737), such that the at least one individual drive (M E ) the at least one rotor (737) and at least one stator (738) are designed to position axially relative to each other, such that the at least two transport sections (706) each have a single drive (M E ) for axial adjustment.

Electric motor with stator and rotor, characterized in that an electric motor (1) has at least one stator (5, 6) with at least one gear stage (72) designed as a permanent magnet (9), at least one rotor (2, 4) has any number of teeth (12 to 31, 52 to 71) designed as electromagnets (10), wherein the teeth (12 to 31, 52 to 71) each have an electric coil (107), the electric coils (107) are electrically connected to a power source (113) and to a motor control unit (114) via at least one commutator (11) with its commutator segments (135) and associated carbon brushes (132), a speed sensor (139) and a phase sensor (149) are respectively arranged on the rotor (2, 4) and on the stator (5, 6), wherein the detected speeds and rotational positions of the rotor (2, 4) and the stator (5, 6) to the engine control unit (114) for synchronizing the speeds of the stator (5, 6) with the speeds of the rotor (2,4) are transmitted according to the transmission ratio (147), and the electric coils (107) are electrically connected and disconnected as desired from the energy source (113) via the commutator segments (135) of the commutator (11) and via the motor control unit (114), whereby the teeth (12 to 31, 52 to 71) of the rotor (2, 4) become electromagnets (10) with a magnetic north pole (81) and a magnetic south pole (82) at any time, for any duration, in any number and in any sequence.

The present invention relates to a three-phase asynchronous motor having a passive rotor and a stator, comprising a laminated core having slots, wherein the slots can accommodate a plurality of molded winding coils made of solid copper material using hairpin technology, the rotor is designed as a copper rotor, and the winding head of the stator can preferably be realized by layer-by-layer additive coating and locally selective solidification of a conductive material, particularly copper material. According to the present invention, the three-phase asynchronous motor has distributed pitch-free hairpin windings with a number of strand windings in the range of 100 or more, with 10 to 16 hairpins installed in each slot, and can achieve a limiting efficiency factor of IE4 or higher, particularly IE5 or higher, in accordance with IEC-60034-02, in a speed range of at least up to 2000 rpm.

The present application relates to the field of variable displacement fluid machinery, and particularly relates to an asymmetric three-claw rotor and a claw type fluid machinery with the three-claw rotor, wherein the asymmetric three-claw rotor comprises a first three-claw rotor and a second three-claw rotor capable of synchronous and opposite double-rotation movement around respective rotation centers; the cross-sectional profiles of the first three-claw rotor and the second three-claw rotor are not completely identical, but each is composed of three single-claw outline curves of the same shape connected in sequence to form a planar rotationally symmetric figure. The single-claw outline curves of the first three-claw rotor and the second three-claw rotor in the present application are composed of only four curves, the outline profile is simple, the number of curves contained is less, the independent geometric parameters are less, the rotor design process is simple, and the design and manufacturing difficulty is lower.

The present invention discloses a detachable powered modular electric rotor, which relates to the field of multi-purpose UAV design. The designed electric rotor and the outer periphery of the fuselage are evenly and symmetrically provided with an even number of rotor fixing rod positioning holes to achieve "plug and play" connection. The unmanned aerial platform is composed of a number of modular rotors and a fuselage in a detachable connection manner. The modular battery, electric adjustment system and rotor form a whole to form the power system of the unmanned aerial platform. The rotor fixing rod is a rectangular box-shaped structure. One end of the rotor fixing rod can be connected to the positioning hole by a nut, and the other end of the rotor fixing rod is fixedly provided with a motor fixing slot; a motor of a suitable size can be arranged in the motor fixing slot according to needs, and a propeller is fixedly provided on the output shaft of the motor. The present invention provides more possibilities for the selection of the rotor system.