52 results about "Magnetic rotation" patented technology

The application discloses a kind of superhigh power laser and hollow tungsten electrode composite welding methods based on magnetic rotation control technology.At present, in superhigh power laser medium plate welding, too intense heat energy conversion effect makes welding process extremely unstable, and welding problems such as porosity, spatter, forming difficult to control are prone to occur.The composition of the application includes: hollow tungsten electrode (1), superhigh power laser passes through the center hole of the hollow tungsten electrode to form coaxial composite laser beam (3), annular inductive coil or permanent magnet (2) is arranged above the welding test plate (6), the inductive coil or permanent magnet and the arc (4) at the bottom of the hollow tungsten electrode form a longitudinal magnetic field, the laser beam passes through the arc and the molten pool (5), and the longitudinal magnetic field can rotate the arc, forming a rotating arc and laser beam composite to act on the welding point area.The application is used for superhigh power laser and hollow tungsten electrode composite welding method based on magnetic rotation control technology.

The utility model relates to the technical field of building blocks teaching aid, especially to a circuit module and circuit toy set, including base, the side of base is provided with the interface for inserting the power cord, the bottom of base is provided with the standardization intermate structure for inserting on building block board, and the standardization intermate structure is connecting post or connecting groove, the inside rotation of base is provided with magnetic attraction component and the driving device of driving magnetic attraction component rotation, at least partly transparent liquid storage cylinder body, detachably installed on the base, the bottom of liquid storage cylinder body is equipped with magnetic rotation component, wherein, when liquid storage cylinder body installs to base, magnetic rotation component is located in the magnetic field action range of magnetic attraction component, when driving device drives magnetic attraction component rotation, through magnetic field coupling drives magnetic rotation component synchronous rotation, makes the liquid in liquid storage cylinder body form whirlpool, this scheme has the advantages of non -contact transmission to avoid mechanical wear and tear, high modular degree and convenient maintenance.

A magnetic suction rotary unlocking buckle comprises an upper buckle assembly and a lower buckle assembly matched with the upper buckle assembly, the lower buckle assembly comprises a connecting plate and a protrusion arranged on the connecting plate, a first magnet is arranged in the protrusion, and an annular clamping groove is formed in the outer wall of the protrusion; the upper buckle assembly comprises a lower cover, an upper cover and a hand wheel ring pivoted between the upper cover and the lower cover, a through hole communicated with the containing cavity is formed in the lower cover, a mounting base is arranged above the through hole in the containing cavity and connected with the inner wall of the hand wheel ring, a second magnet and a third magnet are arranged on the mounting base, the second magnet is matched with the first magnet in an attraction mode, and the third magnet is matched with the second magnet in an attraction mode. The third magnet is matched with the first magnet in a repelling mode, a clamping hook is arranged on one side of the through hole in the containing cavity, and a first reset mechanism for driving the hand wheel ring to reset after rotating and a second reset mechanism for driving the clamping hook to be close to the through hole are arranged in the containing cavity. The locking device is simple and quick to operate, and can realize quick buckling and unlocking.

The invention discloses a method for reducing storage and calculation amount in electromagnetic scattering non-singularity solution of a rotating body, and belongs to the field of electromagnetic engineering. According to the method, on the basis of a moment method (MoM) theoretical framework, an auxiliary function is introduced to eliminate the influence of Green function singularity in a surface integral equation on numerical calculation, and meanwhile, the physical constraint that the electric field divergence of a passive area is zero is further combined, so that effective order reduction of an unknown quantity is achieved; a traditional four-variable integral equation set is simplified into a three-variable coupled wave equation, the order and storage requirements of an impedance matrix are remarkably reduced, and the solving efficiency is greatly improved while the calculation precision is guaranteed. A specific electromagnetic rotating body device model is used for simulation, numerical verification shows that the method has excellent performance in calculation of an electromagnetic scattering field of a typical rotating body structure, and an efficient and reliable technical means is provided for rapid electromagnetic calculation of engineering equipment such as spherical communication satellites and missile nose cones.

The utility model relates to the technical field of chemical test analysis, and discloses a magnetic rotation full-automatic fiber dissolver which comprises a bottom plate, a first fixing table is fixedly connected to the left side of the top end of the bottom plate, a second fixing table is fixedly connected to the right side of the top end of the bottom plate, and a motor is fixedly connected to the top end of the first fixing table. The driving end of the motor penetrates through the top end of the first fixing table and is fixedly connected with a driving wheel, the right end of the driving wheel is connected with a driving wheel through a rotating assembly, the bottom end of the hyaluronic acid barrel is arranged at the top end of the driving wheel, and the bottom end of the inner wall of the hyaluronic acid barrel is rotationally connected with a driven wheel. According to the utility model, a magnetic transmission mode is adopted, a dissolving solution and fibers are rotationally stirred, vibration and noise generated during mechanical contact are avoided, the dissolving solution is added into the hyaluronic acid barrel through the peracid pipelines, an experimenter is prevented from being in contact with acidic and alkaline dissolving solutions, and the experiment efficiency is improved. The safety of experimenters is ensured.

A pumping device for conveying a fluid is proposed, having a disposable device and a reusable device, wherein the disposable device is designed to be inserted into the reusable device and comprises two pump units arranged in series, wherein each pump unit comprises a rotor for conveying the fluid, wherein each rotor is designed as a rotor of a bearingless electric motor and can be contactlessly magnetically suspended and contactlessly driven for rotation about an axial direction, wherein the reusable device is designed for insertion of the disposable device and comprises for each rotor a stator which forms with the rotor an electromagnetic rotary drive for rotating the rotor about the axial direction, wherein each stator is designed as a bearing and drive stator through which the rotor can be contactlessly magnetically driven and can be contactlessly magnetically suspended relative to the stator, and wherein for each stator an independent control device is provided.

The invention belongs to the technical field of experiment teaching instruments. The operation device comprises a controller, a constant current source, a machine shell, a rotating shaft, a cylindrical shell, a photoelectric sensor, a light shielding rod and a metal rod clamp with a movable block. The controller is in communication connection with the constant-current source and the photoelectric sensor, the upper bearing and the lower bearing of the machine shell are connected with the rotating shaft, the constant-current source is connected with the two ends of the rotating shaft through the electric brush, the cylindrical shell (conductor) is powered on and can rotate, and the light shielding rod is fixed to the outer side of the cylindrical shell and used for detection of the photoelectric sensor. The problem that existing experiment teaching lacks a device for visually demonstrating the electromagnetic effect and torque adjustment and is not beneficial for students to understand related principles is solved, the electromagnetic rotation effect and the adjustable torque can be visually demonstrated, and experiment teaching can be effectively assisted.

According to an embodiment, an interior magnet rotor (10) includes a rotor shaft extending in a rotation axis direction, a rotor core (12), and a plurality of permanent magnets (20). The rotor core (12) has at least one magnet housing hole (12a) formed in each magnetic pole and sandwiched by a first wall (12d) and a second wall (12e), and is attached to the rotor shaft. The plurality of permanent magnets (20) are housed in the magnet housing hole (12a) and are arranged in a row in one direction in a cross section of the magnet housing hole (12a). The permanent magnets (20) each have a substantially rectangular parallelepiped outer shape and have slopes formed over a longitudinal direction on two corners opposite to each other.

A fan having a rotor for generating a fluid flow includes a stator and a rotor, which form an electromagnetic rotary drive for rotating the rotor about an axial direction. The rotary drive is an external rotor, and the rotor includes a magnetically effective core configured in an annular manner. The impeller includes a hub on which a plurality of blades configured to generate the fluid flow is arranged, and the stator is a bearing and drive stator configured to magnetically drive the rotor without contact and magnetically levitate the rotor without contact with respect to the stator. The rotor is capable of being actively magnetically levitated in a radial plane perpendicular to the axial direction, the hub of the impeller completely enclosing the magnetically effective core of the rotor, and the stator is encapsulated in a stator housing and formed of a low-permeable material.

In a rotor (4) in which one pole is constituted by two magnet insertion holes provided in a V-shape, the strength of an inner-diameter bridge can be ensured even if the inner-diameter bridge is reduced in width.　A magnet insertion hole (45) comprises an inner-diameter flux barrier (45a) on the inner-diameter side and an outer-diameter flux barrier (45b) on the outer-diameter side of the position where a permanent magnet (43) is disposed. A lightening hole (46) is made in the rotor at a position overlapping a d-axis between inner-diameter flux barriers. The portion between an inner-diameter flux barrier and the lightening hole is an inner-diameter bridge (42a), and a straight line L1 perpendicular to the cross section of a minimum width part W1 of said inner-diameter bridge intersects the d-axis on the outer-diameter side or the inner-diameter side of said inner-diameter bridge.

An electromagnetic rotary drive includes a single-use device for single use and a reusable device for multiple use. The single-use device includes a rotor housing with a rotor, a connecting tube for a fluid, and a single-use component. The rotor housing has an inlet and an outlet, and the rotor is provided in the rotor housing for rotation about a desired axis of rotation defining an axial direction. The rotor can be magnetically driven without contact, and the connecting tube connects the inlet or the outlet of the rotor housing to the single-use component such that in the operating state the fluid flows through the connecting tube. The reusable device includes a stator, by which the rotor is magnetically driven without contact for rotation about the desired axis of rotation in the operating state.

We provide a magnetic rotation device that achieves high torque and high output even at low rotational speeds. [Solution] The magnetic rotation device 1 comprises a rotor 12 in which a group of permanent magnets 32, each consisting of multiple permanent magnets 31 arranged in the circumferential direction, is arranged at a predetermined distance in the direction of rotation, and a stator 13 having multiple electromagnets 41 arranged radially outward from each of the two groups of permanent magnets 32, and spaced apart in the circumferential direction. Adjacent permanent magnets 31 in the circumferential direction have the same magnetic poles facing each other, and in a pair of groups of permanent magnets 32, the magnetic poles of two adjacent permanent magnets 31 in the direction of rotation are different. One of the two electromagnets 41 adjacent in the direction of rotation has a winding wound on the first leg of an iron core 42 having a first leg, a second leg and a connecting part, and the other has a winding wound on the second leg, and the windings of each are wound in the same direction. The predetermined distance is greater than or equal to the length of the permanent magnet 31 in the direction of rotation, and the number of electromagnets 41 is 1.5 times the number of permanent magnets.

The invention belongs to the technical field of magnetic field measurement and quantum magnetic sensing, and particularly relates to a millimetric CPT magnetometer optical path based on a magnetic rotation effect and a measurement method thereof. The polarization adjusting optical assembly is used for converting original single linear polarization polychromatic light into two beams of linear polarization polychromatic laser which are perpendicular to each other, on one hand, the original single-direction linear polarization polychromatic light can be converted into the two beams of linear polarization polychromatic light which are perpendicular to each other, and on the other hand, the optical path difference of the two beams of linear polarization polychromatic light which are perpendicular to each other can be adjusted. According to the invention, the quantum control is carried out on the interaction process of light and atoms, a better CPT interference signal is obtained, and a differential detection magnetic rotation effect signal is adopted, so that common-mode noise such as optical power in laser is effectively inhibited, the signal-to-noise ratio of a CPT resonance signal is improved, and the measurement accuracy and sensitivity of a millimetric magnetic field are improved.

A system for 3D navigation of a magnetic rotating swimmer includes a magnetic manipulator with coils defining a 3D workspace, a probe positioned to obtain a 2D image of an imaging plane from the 3D workspace, a robotic arm coupled to the probe and to move the probe and the imaging plane, and a processor network in communication with instructions to operate the magnetic manipulator to move the swimmer on a path in the 3D workspace, to obtain 2D images with the probe while the swimmer is moving in the 3D workspace, to detect the swimmer in the images, and to start, in response to detecting the swimmer, a closed-loop control of the robotic arm to move the probe to track the swimmer movement in the 3D workspace.

The invention discloses a traveling wave magnetic field generating device and method based on permanent magnets, and belongs to the technical field of traveling wave magnetic field generating devices, and the traveling wave magnetic field generating device comprises a synchronous transmission mechanism, a driving mechanism, a supporting mechanism and a plurality of permanent magnet rotating units. Each permanent magnet rotating unit comprises a permanent magnet, the permanent magnet is installed between a permanent magnet front clamp and a permanent magnet rear clamp, the rear clamp is connected with the end of a permanent magnet rotating unit shaft through a first coupler, and the permanent magnet rotating unit shaft is supported and fixed through two bearing seats; the two columns of permanent magnet rotating units are installed on the supporting mechanism, the magnetic rotating shaft of the permanent magnet rotating unit in the middle of each column is connected with the driving mechanism through a second coupler, and the permanent magnet rotating unit in the middle is connected with other permanent magnet rotating units in the same column through a synchronous transmission mechanism. The permanent magnet is adopted as a magnetic field source, a traveling wave magnetic field is generated at the vertical plane of the two rows of permanent magnet rotating units, and the permanent magnet rotating unit has stable magnetic field waveform, efficient magnetic field generating capacity and low equipment maintenance cost.

A rotor according to one embodiment of the present invention comprises: a core; and a plurality of permanent magnet modules mounted on the outer circumferential surface of the core, wherein the permanent magnet module includes: a base block coupled to the outer circumferential surface of the core; a permanent magnet arranged on the base block; a cover, which covers the permanent magnet and is coupled to the base block; and a pole shoe interposed between the cover and the permanent magnet, and the pole shoe and the permanent magnet can have the same length extending in the tangential direction of the core.

A fan having a rotor for generating a fluid flow includes a stator and a rotor, which form an electromagnetic rotary drive for rotating the rotor about an axial direction. The rotary drive is an external rotor, and the rotor includes a magnetically effective core configured in an annular manner. The impeller includes a hub on which a plurality of blades configured to generate the fluid flow is arranged, and the stator is a bearing and drive stator configured to magnetically drive the rotor without contact and magnetically levitate the rotor without contact with respect to the stator. The rotor is capable of being actively magnetically levitated in a radial plane perpendicular to the axial direction, the hub of the impeller completely enclosing the magnetically effective core of the rotor, and the stator is encapsulated in a stator housing and formed of a low-permeable material.

A bearingless motor as an electromagnetic rotary machinery includes a rotor and a stator disposed with a gap therebetween, and generates a bearing force that causes the rotor to levitate without contact, by an electromagnetic force or a magnetic force. A stator core includes a back yoke and a plurality of teeth. The teeth each include a tooth body and a tooth tip that is flange shaped. The rotor includes a rotor core and a plurality of permanent magnets. Permeance, which is an amount representing the ease of flowing of magnetic flux, of at least one of the gap and iron cores in a magnetic circuit that goes around the stator and the rotor along a radial direction and a circumferential direction decreases in one direction from one end side to another end side in an axial direction.

The invention discloses a dynamic load balanced full-automatic multi-station thread rolling machine, and relates to the technical field of thread rolling machines, the dynamic load balanced full-automatic multi-station thread rolling machine comprises a machine box, a limiting groove, a thread rolling wheel, an oil passing pipe and an oil outlet nozzle, a cooling part is integrated in the machine box, a filtering mechanism is arranged below the thread rolling wheel, and the filtering mechanism is further provided with a magnetic rotation separation part and a magnetic rotation separation part, the magnetic rotation separation part is mounted on the inner wall of the case and comprises a servo motor; the scraping part is mounted on the outer surface of the magnetic rotation separation part, and the scraping part is provided with a cutting plate; according to the magnetic cyclone separation component, a cyclone separation plate structure with the high middle and the low periphery is combined with an adsorption plate made of a nickel-plated neodymium-iron-boron material, efficient oil and scrap separation is achieved by means of centrifugal force and magnetic force in the rotating process, and the problem that metal scraps are difficult to remove from thread rolling oil is effectively solved; and the problems that the abrasion of the hobbing wheel is aggravated and the machining quality is reduced due to chipping circulation are solved.

A bearingless motor (1) as an electromagnetic rotary machine has a stator (10) and a rotor (20) disposed with a gap portion (2) interposed therebetween, and generates a support force for non-contact suspension of the rotor (20) by electromagnetic force or magnetic force. A stator core (11) has a back yoke portion (12) and a plurality of tooth portions (13). The tooth portion (13) has a tooth main body portion (13a) and a flange-like tooth tip portion (13b). The rotor (20) has a rotor core (21) and a plurality of permanent magnets (22). The tooth tip portion (13b) has an upper-stage tooth tip portion (13b1) and a lower-stage tooth tip portion (13b2). A quantity indicating easiness of passage of magnetic flux of at least one of the gap portion (2) and the iron core in a magnetic path in which the stator (10) and the rotor (20) are rotated in the radial direction and the circumferential direction, that is, a permeability decreases in one direction from one end side toward the other end side in the axial direction.

A fan having a rotor for generating a fluid flow includes a stator and a rotor, which form an electromagnetic rotary drive for rotating the rotor about an axial direction. The rotary drive is an external rotor, and the rotor includes a magnetically effective core configured in an annular manner. The impeller includes a hub on which a plurality of blades configured to generate the fluid flow is arranged, and the stator is a bearing and drive stator configured to magnetically drive the rotor without contact and magnetically levitate the rotor without contact with respect to the stator. The rotor is capable of being actively magnetically levitated in a radial plane perpendicular to the axial direction, the hub of the impeller completely enclosing the magnetically effective core of the rotor, and the stator is encapsulated in a stator housing and formed of a low-permeable material.

The application discloses a multifunctional nest door with magnetic attraction, rotation and fixed feeding outside a box, and relates to the field of beekeeping equipment. The multifunctional nest door comprises a solid feed box upper cover, a flow control assembly, an outer end plate, an inner end plate, a secondary nest door plate, a solid feed box and a beehive. Iron sheets are symmetrically arranged on both sides of the end of the box wall of the beehive door. The main nest door body is combined by the outer end plate, the side end plate and the inner end plate. The nest door is fixed by the combined action of magnetic attraction, rotation and vertical buckling and rotating parts, so that the nest door is separated from the beehive without being nailed, and the operation is convenient and flexible. When the bee colony needs solid feed, the solid feed box upper cover of the nest door is opened to add the solid feed. When the bee colony needs liquid feed, the flow control box upper cover is opened to pour the appropriate liquid feed into the flow control box, or the valve connected with the pressure liquid feed container and the flow control assembly feeding pipe is opened to convey the liquid feed into the flow control box. The multifunctional nest door does not need to be frequently opened for feeding, and time and labor are saved.

The utility model relates to an on-line magnetizing rotary swing arm mechanism, which belongs to the technical field of on-line magnetizing and comprises a mounting bottom plate, a support column is fixedly mounted at the top of the mounting bottom plate, a pneumatic rotary joint is fixedly mounted at the top of the support column, and a rotary table is fixedly mounted at the top of the pneumatic rotary joint. According to the on-line magnetizing rotary swing arm mechanism, the four rotary arms are installed on the rotary disc, the rotary disc is installed on the movable part of the top of the pneumatic rotary connector, the pneumatic clamping jaw is arranged on one side of each rotary arm, the rotary disc rotates to drive the pneumatic clamping jaw to change positions, and magnetic materials or assemblies are driven to move to the position below a magnetizing device from an input conveying belt to be magnetized; and after magnetizing is completed, rotation continues to be carried out to place the magnetic materials or the assemblies on the output conveying belt, online magnetizing is completed, and the problems that when a common online magnetizing device is used for magnetizing, workers need to carry out feeding and discharging operation on the magnetic materials or the assemblies, the operation process is troublesome, and specially-assigned persons are needed for operation are solved.

The present application relates to a kind of high-speed moving conductive object magnetic rotation method and device, utilize space cross magnetic field or multi-angle cross magnetic field, axial current is induced on the surface of conductive object, axial current is acted on by magnetic field force in cross magnetic field, and torque is generated to conductive object, so as to rotate along its own axis to conductive object.Cruciform cross magnetic field can be with magnetic field or electric field, high-speed moving conductive object can be single material or composite material, can be all conductor or partially have conductivity.The present application has the characteristics of high adaptability, long life, fast rotation and safe and reliable.

A sensor-equipped bearing is provided which includes a rolling bearing and a magnetic rotation sensor, and which further includes a hook member formed into an annular shape using a resin. The magnetic rotation sensor includes a magnetic ring coupled to an outer peripheral portion of an inner ring; and a magnetic sensor unit coupled to an outer ring. The magnetic ring includes a magnetic rubber member fixed to an annular metal core. The outer peripheral portion of the inner ring is formed with an outer peripheral groove circumferentially extending. The hook member includes a protrusion engaged in the outer peripheral groove of the inner ring. A metal core is held by the hook member.

The invention relates to an electric drive (1) of an actuator (100) for automation technology for actuating a fitting such as a valve, comprising: an electric motor (10); characterized by the fact that the electric drive has a magnetic rotation-locking device (20) which is configured to lock the electric motor in its rotation in a static or quasi-static state with a cogging torque, wherein the rotational locking device (20) in a dynamic state above a limiting speed has a cogging torque of less than 5 percent, and in particular less than 1 percent, and preferably less than 0.2 percent of the cogging torque.

The utility model discloses a metallographic phase grinding frock clamp, relates to clamping frock technical field, including clamping frock and rotary chassis, clamping frock includes magnetic attraction base, switch and clamp, the switch control magnetic attraction base magnetism on and off, rotary chassis includes metal seat and polishing disk, the polishing disk is embedded in metal seat, and the metal seat is equipped with the clamp. The magnetic attraction base is attracted to the metal base after being magnetized, and the clamping end of the clamp is located above the grinding disc. When the switch is rotated to enable the south pole and the north pole of the magnet to face the magnetic block, the magnetic block can be magnetized, so that the magnetic attraction base has magnetism and can be attracted to the metal base; otherwise, when the switch is rotated to enable the south and north poles of the magnet to face the non-magnetic block, the non-magnetic block is not magnetized, so that the magnetism of the magnetic base disappears. The magnetic attraction base can be attracted to the metal disc after being magnetized, one grinding disc can correspond to multiple sets of same or different clamping tools, the multiple clamping tools can be mounted and dismounted at any time, and flexibility is high.

Injection monitoring module removably mountable to a proximal extremity of an injection pen comprising a pen body, a proximally located dose setting wheel, and an injection activator, the dose setting wheel rotating about a central longitudinal axis of the pen during dose setting, the injection monitoring module comprising a hollow main body coaxially mounted on, and engaging in co-rotation with the dose setting wheel, the main body comprising a longitudinal bore having a proximal and distal extremities, and a central longitudinal axis; one or more magnets located on or within the main body; an injection monitoring system comprising at least one magnetic sensor movable in translation along the central axis within the bore, from a first monitoring position, to a second monitoring position; the injection monitoring module further comprising a rotational stop means preventing rotational movement of the monitoring system about the central axis during dose selection.

A miniature magnetic rotating swimmer includes a cylindrical body having a central axis and extending from an aft end to a forward end, a magnet positioned inside of the body, first helical fins extending aft from the forward end, and second helical fins extending forward from the aft end, where the first helical fins and the second helical fins have the same pitch.