291results about "Electromagnets without armatures" patented technology

The invention belongs to the technical field of electronic parts, and provides a damping-adjustable roller structure and a damping adjusting method. The first annular shaft is fixed to the mounting base, and a plurality of first bosses are evenly arranged on the end face of the first annular shaft; the second annular shaft is rotationally arranged on the mounting base, the second annular shaft and the first annular shaft are coaxially arranged, and second bosses are evenly arranged on the surface of the end, facing the first boss, of the second annular shaft; the first annular shaft is provided with a magnetic field coil, the magnetic field coil is used for adjusting the magnetic intensity of the first annular shaft, gaps are formed between the first bosses and the second bosses, and the first bosses and the second bosses are arranged in a one-to-one correspondence mode. The magnetic field intensity of the first annular shaft is changed by adjusting the current magnitude and direction of the magnetic field coil, so that the magnetic attraction force between the first boss and the second boss is adjusted, and the damping is adjustable when the second annular shaft rotates. Meanwhile, the magnetic field coil can convert kinetic energy of the second annular shaft into electric energy to achieve the technical effect of electric energy collection.

The invention discloses a hydraulic mechanism for a water-cooled magnet structure with high mechanical stability. The hydraulic mechanism comprises a cylinder body, a piston, a check ring, a pressure equalizing pad, a limiting block, a first force transmission check ring, a first anti-rotation pin, a second force transmission check ring, a second anti-rotation pin, a first force transmission column and a second force transmission column. The water-cooled magnet has the advantages that axial stress application can be carried out on the magnet coil assembly, the pressing force on the magnet coil assembly is improved, the problems of tension fracture and damage caused by coil stress overrun due to overlarge radial expansion electromagnetic force of a magnet coil bit piece and an insulating piece are solved, and the high mechanical stability of the water-cooled magnet is improved.

The invention discloses a high-field water-cooling magnet device which comprises a container assembly and a magnet coil assembly, and the magnet coil assembly is located in the container assembly and communicated with the container assembly. The container assembly comprises a hydraulic machine assembly, and the hydraulic machine assembly comprises a cylinder body, a piston, a check ring, a pressure equalizing pad, a first force transmission check ring, a first anti-rotation pin, a second force transmission check ring, a second anti-rotation pin, a first force transmission column and a second force transmission column. The axial force application device has the advantages that axial force application can be performed on the magnet coil assembly, the pressing force on the magnet coil assembly is improved, and the problems of tension fracture and damage caused by coil stress overrun due to overlarge radial expansion electromagnetic force of a magnet coil bit piece and an insulating piece are solved.

A permanent electromagnetic holder 1 is provided with: a first magnet 3 that has a relatively small coercive force; a ring-shaped second magnet 4 that is a rare-earth magnet having a relatively large coercive force; and a coil 5 for magnetizing the first magnet through energization thereof. The first magnet 3 is configured such that the magnetic pole surfaces of different magnetic poles are oriented in the thrust direction of an axial center α, the second magnet 4 is configured such that the magnetic pole surfaces of different magnetic poles are oriented in the thrust direction of an axial center α, and the second magnet 4 is disposed outside the first magnet in the radial direction of the axial center α. The first magnet 3, the second magnet 4, and the coil 5 are arranged so as to overlap in the radial direction of the axial center α, and an operation of switching an adsorption ON / OFF state is carried out by switching the magnetizing direction of the first magnet 3 through energization of the coil 5 when the adsorption ON / OFF state is switched.

An article transfer and storage apparatus includes a case installed in a semiconductor factory and including a frame, the frame including at least a first shelf plate extending in a first horizontal direction, and a plurality of storage ports arranged on the first shelf plate and configured to accommodate a semiconductor carrier, and a storage port transport configured to move the storage ports in the first horizontal direction, and a transfer robot including a transport base at a bottom of the transfer robot, the transfer robot configured to place the semiconductor carrier in the case or take out the semiconductor carrier from the case and move the semiconductor carrier.

A liquid cooling system includes first and second coolant tubes and a coupler to couple the first coolant tube to the second coolant tube. The first coolant tube receives coolant liquid from a first element of the liquid cooling system. The second coolant tube provides the coolant liquid to a second element of the liquid cooling system. The coupler is configured to receive an electrical signal to constrict a flow of the coolant liquid.

The utility model discloses an electromagnetic coil, a magneto-rheological shock absorber and an automobile. The electromagnetic coil comprises an iron core and an excitation wire. The iron core is sleeved outside the sliding end, and a wire slot is annularly formed in the peripheral side of the iron core; the excitation wire is wound in the wire slot to form an excitation coil, and the cross section of the excitation wire is in a flat geometric shape; the magnetorheological damper comprises the electromagnetic coil and is applied to an automobile. In the scheme of the utility model, after the excitation lead is wound into the excitation coil, the gap between each turn of lead and the gap between the external lead of the excitation coil and the slot wall of the wire slot are greatly reduced, under the condition that the space of the wire slot is not changed, the number of turns of the coil can be increased by using the flat excitation lead, and the utilization rate of the space in the wire slot is higher; the effective working length of the electromagnetic coil is larger, the maximum damping force of the magneto-rheological shock absorber can be improved, the electromagnetic efficiency is greatly improved, and large damping force can be generated only through small current.

Provided are a method and device for driving movement of a target object by a gravitational field generated by a varying electromagnetic field which relate to the technical field of physics. The method includes: generating, by a variable electromagnetic field generator, a time-varying electromagnetic field in space where a target is located; adjusting a frequency, amplitude and phase of the time-varying electromagnetic field so as to generate an effect of a varying magnetic field in the space; and based on the time-varying electromagnetic field, generating an acting force on the target object to drive the target object to move along a predetermined trajectory or direction. The present invention breaks through limitation that the traditional electromagnetic mechanics can only drive metal materials, utilizes the varying characteristics of the electromagnetic field to drive and realize accurate control of movement of all objects comprising a non-magnetic substance and a non-conductive substance.

Example embodiments are directed a magnetic field generation device including an array of electromagnets including a plurality of electromagnets, and a current controller configured to generate a plurality of current waveforms and to apply each current waveform to a respective one of the plurality of electromagnets. The current controller is further configured to control a pulse duty cycle of each of the plurality of current waveforms. The magnetic field generation device also includes a magnetic field controller configured to calculate each of the plurality of current waveforms to be provided to the respective one of the plurality of electromagnets to generate a desired magnetic field distribution. The plurality of electromagnets include a central electromagnet, and peripheral electromagnets having symmetry in an azimuth direction and arranged about the central electromagnet. Each electromagnet includes a magnetic core and a coil, and a yoke magnetically couples the electromagnets to each other.

The invention relates to the technical field of magnetic therapy, and discloses an electromagnetic physical therapy device which comprises a framework, a coil, a magnetic needle, a cooling fin and a supporting sleeve, the framework is provided with an up-down through assembly hole, the coil is wound on the periphery of the framework, the supporting sleeve is provided with an up-down through magnetic needle cavity, and the bottom of the supporting sleeve is provided with a protruding block extending outwards. The magnetic needle is fixed in the magnetic needle cavity, the supporting sleeve extends into the assembling hole of the framework, the protruding block extends out of the assembling hole and is attached to the bottom face of the framework, the cooling fin is provided with a vertically-through cooling hole, a groove is formed in the periphery of the top of the cooling hole, the top of the cooling hole is fixedly connected with the bottom of the framework, and the cooling hole corresponds to the assembling hole in position. The groove accommodates the protruding block so that the protruding block can be clamped by the framework and the cooling fin, and therefore the magnetic needle can be fixed in the assembling hole, the assembling hole does not need to be filled with pouring sealant, and the magnetic needle and the framework can be detached from each other.

A writing utensil such as a pen having multiple magnetic members along its barrel. The magnetic members have opposite polarity so as to drive each other away. One of the magnetic members may be bonded to the barrel while the other extends around it to form a ring with an inner circumference large to allow it to move along the barrel between the bonded magnetic member and a capturing mechanism at a top end of the barrel. The capturing mechanism may have a metal member to retain the floating magnetic member for temporary storage.

A vehicle for driving on ferromagnetic structures includes a chassis, first and second wheels rotatably coupled to the chassis, and a magnet array coupled to the chassis for magnetically attracting the vehicle to the structures. The magnet array is controllable to aim a magnetic field produced by the magnet array over a range of angles relative to the chassis.

The magneto-rheological electromagnet comprises a shell (1), a coil (6) is wound in a coil assembling groove (1.2) in the outer wall of the shell (1), a wire (2) is connected to the coil (6) after being inserted into the shell (1), the wire (2) is connected to a connecting column (3), the connecting column (3) is inserted into a mounting piece (2), the mounting piece (2) is embedded in a mounting hole (1.1) of the shell (1), a wire groove (1.3) is formed in the shell (1), and the wire groove (1.3) is connected with the wire (6). And a leading-out wire of the coil (6) passes through the wiring trough (1.3) and then is connected to the connecting column (3). The magneto-rheological electromagnet has the advantages of being resistant to pressure, good in sealing effect and reliable in assembly.

An electronic device including a wireless charging device is provided. The wireless charging device includes a power transmission coil for wirelessly transmitting power to the electronic device, and a first coil which is disposed inside the power transmission coil and by which a magnetic field is formed in a first direction. The electronic device includes a power reception coil for wirelessly receiving power from the power transmission coil, and a second coil which is disposed inside the power reception coil and by which a magnetic field is formed in a second direction opposite the first direction, wherein the first coil and the second coil are configured to be matched so that the power transmission coil and the power reception coil are aligned.

The invention discloses a pulsed high-intensity magnetic field generation device and method. The device comprises a vacuum chamber; the spiral backflow assembly is located in the vacuum cavity and comprises a conductive bottom plate, a conductive top plate located over the conductive bottom plate and a plurality of conductive spiral rods, a first through hole is formed in the conductive bottom plate, one end of each conductive spiral rod is connected to the conductive bottom plate, and the other end of each conductive spiral rod is connected to the conductive top plate; the plurality of conductive screw rods are uniformly distributed in the circumferential direction around the axis of the first through hole and have the same spiral direction; the plasma generating assembly comprises a first conductive block penetrating through the first through hole and not making contact with the bottom plate, a second conductive block located over the first conductive block and connected with the conductive top plate and a plurality of micron-sized conductive wires, one ends of the micron-sized conductive wires are connected to the first conductive block, and the other ends of the micron-sized conductive wires are connected to the second conductive block; the plurality of micron-sized conductive wires are uniformly distributed in the circumferential direction around the axis of the first through hole; the positive electrode of the pulse current source is electrically connected to the conductive bottom plate, and the negative electrode is electrically connected to the first conductive block. The invention aims to generate pulsed magnetic field intensity by using a simple device structure.

An interference reduction device is provided. The interference reduction device may include a magnetic shield positioned in proximity of a magnetic field. The magnetic shield is configured to reduce interference on the magnetic field along the direction of the magnetic field. The magnetic shield may include a cutout approximately parallel to the direction of the magnetic field, the cutout is configured to reduce a distortion caused by the magnetic shield on the magnetic field.

The present invention relates to an optimized structure and a control system of a magnetic lifter. The control system of a magnetic lifter according to an embodiment of the present invention may comprise: a magnetic lifter unit comprising a plurality of ports in the form of an accommodation groove and comprising auxiliary magnetic poles which are accommodated and fixed in the plurality of ports, respectively, operate as a magnetic lifter having N and S poles when external power is applied, to generate an attractive force with respect to an object to be attracted, and prevent magnetic force loss caused by an air gap with a contact surface of the object to be attracted; and a magnetic force control device configured to convert a DC voltage applied to a solenoid coil into an AC voltage and apply the converted voltage, in order to remove residual magnetism of the object to be attracted after the object to be attracted is lowered to a destination.

The invention provides a magnetic flux generator to enhance ion transport in an electrochemical cell. The magnetic flux generator comprises one or more magnetic field sources, each being configured to produce a respective magnetic field. Each magnetic field is individually controllably variable in three spatial dimensions.

Provided is a device sealed with a magnetic liquid. The device includes: a rotary shaft, a tank body, a control unit, a first module, a second module, a magnetic liquid, and a pole-tooth. The first module and the second module are in the same configuration, each consists of an outer shell, a left pole-shoe, an electromagnet, a control wiring, a right pole-shoe, and a circlip. The device includes at least two modular structures; the control unit controls a first electromagnet and a second electromagnet to be magnetized to alternately bear a sealing role.

To provide a magnetic component and a method of manufacturing the same.SOLUTION: A magnetic component includes a magnetic device, a base, and a positioning frame. The magnetic device includes a top part and a bottom part which are disposed oppositely, and the magnetic device includes a magnetic core and a coil which is provided while being wound around the magnetic core. The base includes a base plate. The positioning frame has a positioning part and a peripheral wall, the peripheral wall includes a first end and a second end which are provided oppositely, the first end and the second end respectively correspond to the top part and the bottom part of the magnetic device, and the peripheral wall is vertically connected to an outer edge of the positioning part in a circumferential direction by the first end. The second end of the peripheral wall of the positioning frame is connected to an outer edge of the base plate in the circumferential direction. Thus, the positioning frame encloses a storage space together with the base plate, the magnetic device is positioned in the storage space, and the top part of the magnetic device is brought into contact and engaged with the positioning part of the positioning frame.SELECTED DRAWING: Figure 2D

The present invention relates to a pseudo-magnetic monopole generator comprising a plurality of magnetic elements arranged to form a closed loop structure. Each of the magnetic elements is magnetized along the longitudinal direction thereof, and the magnetic elements are specifically arranged such that the magnetic moments thereof are aligned in a vortex-like direction. In the closed loop structure, a first pole of each magnetic element is exposed at an edge, while a second pole is shielded by an adjacent magnetic element, and the second pole is configured to face a central opening of the closed loop such that a polarized magnetic field having the same polarity as the second pole is emitted in both directions perpendicular to the plane of the closed loop structure through the central opening.

The present application provides an operating mechanism and an operating input device. The operating mechanism comprises: a housing, the housing having an accommodating space; a movable operating member, the movable operating member being accommodated in the accommodating space and at least partially extending out of the housing; a support member, used for supporting the movable operating member, wherein the movable operating member moves around the support member; magnets, the magnets being connected to the movable operating member; and magnetic members, wherein the magnetic members have magnetic attraction to the magnets, and the movable operating member can be reset and / or retained in an initial position by means of the magnetic attraction between the magnetic members and the magnets. According to the operating mechanism and the operating input device provided in the embodiments of the present application, the operating mechanism has vibration resistance and drop impact resistance, the reliability of the operating mechanism is not easily affected by assembly, and the operating mechanism has high durability against user inputs.

An ultra-high speed laser cladding device and a process based on the dual suppression of magnetic force and centrifugal force are provided, including a laser generator, a spectrometer, a powder device, a rotary tool and a magnetic field generator. The substrate is installed in the rotary tooling, through the driving device to rotate it. The magnetic field generator is used to generate a magnetic field in the rotary cylinder. The laser generator produces the first laser beam and the second laser beam with different energy through the spectrometer. They are both focused on the surface of the substrate. The powder conveyed by the powder device is sprayed to the surface of the substrate, laser cladded by the first laser beam and the second laser beam. The gas can quickly escape to ensure the density of the cladding layer and reduce the porosity.

Techniques for latching a shaft assembly with an integrated system are discussed herein. The integrated system including a nuclear reactor configured to raise a stem of the shaft assembly into a hold out. The hold out can include a sleeve, and metallic balls, the metallic balls being positioned in openings of the sleeve. The hold out can include a housing positioned around the sleeve and the metallic balls. The housing can include a gap that is narrower than a chamber of the housing. The hold out can include a spring coupled to the sleeve. The hold out can include an electromagnetic coil configured to engage the spring and the sleeve to raise the stem until the metallic balls are moved from positions between the gap of the housing and the stem, to positions between the chamber of the housing and the stem.

The application discloses a new bit slice structure for water-cooled magnets and an insulation mounting method, and the bit slice structure comprises a bit slice body and a flexible insulation sheet; the bit slice body at both ends of a cut is provided with an upper mounting area and a lower mounting area, and the upper mounting area and the lower mounting area are provided with grooves; the insulation mounting method comprises the following steps: placing a first flexible insulation sheet on the upper mounting area of a first bit slice body; rotating the angle of one flexible insulation sheet to place a second bit slice body, so that the lower mounting area of the second bit slice body is pressed and combined with the top surface of the first flexible insulation sheet; and repeating the above steps to stack the bit slice bodies with the flexible insulation sheets in a staggered manner to form a spiral rising current channel. The application has the advantages that the grooves are arranged to increase the contact area of the bit slice body and the flexible insulation sheet, and the water-cooled magnet coil is enhanced in the ability of resisting unbalanced electromagnetic force between the bit slices.

An apparatus and a method for separating a shielding ball are disclosed. An apparatus for separating a shielding ball comprises: an end shield which is installed in a spinning structure of a heavy water reactor facility and includes a fueling tubesheet and a calandria tubesheet facing each other and multiple shielding balls for filling a space between the calandria tubesheet and the fueling tubesheet; as a device for removing the shielding balls from a lattice tube connected to the calandria tube by being connected to the calandria tubesheet through the fueling tubesheet, a magnetic force applying unit inserted into the lattice tube in a direction of the fueling tubesheet to apply a magnetic force for fixing positions of the multiple shielding balls positioned within a first distance from the calandria tubesheet; a mover for moving the magnetic force applying unit in a direction of the lattice tube; and a storage rack for separately storing, inside the end shield, the shielding balls positioned within the first distance from the calandria tubesheet and shielding balls positioned at a distance greater than the first distance.

An improved method for generating electromagnetic fields by low frequency current pulses to treat body parts of a living organism is proposed. [Solution] The present invention relates to a method for generating an electromagnetic field by a generator (5) in an applicator (5) using low-frequency current pulses (10). Furthermore, a plurality of current pulses (10) according to a signal progression are generated. Each current pulse (10) has a first signal component in the form of a rectangular pulse. A current pulse pause (16) is provided between two current pulses (10). The amplitude of the current pulses (10) is modulated at the modulation frequency of the sinusoidal signal progression. Furthermore, the present invention relates to a device for carrying out this method.

Fishing lures are disclosed herein. One fishing lure, includes a body having a front portion and a back portion wherein the front and back portion are constructed and arranged such that at least one of the portions can move with respect to the other portion and an electromagnetic field generation system having a magnet and a coil of conductive wire wherein the wire has a contact at each end of the coil and wherein the magnet and the coil are separated from each other such that the magnet is located in either the front portion or back portion and the coil is located in the portion not containing the magnet.

The invention provides an EMB electromagnet, and relates to the technical field of electromagnets, the EMB electromagnet comprises a mounting frame, the side end of the mounting frame is slidably provided with a positioning plate, and the inner side of the mounting frame is provided with a fixed supporting plate; a positioning sleeve is installed on the top of the fixed supporting plate, and magnetic block assemblies are installed on the two sides of the fixed supporting plate. A mounting fixing sleeve is mounted in the positioning sleeve; a fixed inner cylinder is rotationally mounted in the mounting fixed sleeve; positioning pieces are mounted on the outer sides of the two ends of the fixed inner cylinder; and a rotating shaft is mounted in the fixed inner cylinder and the positioning piece. The two shielding rings arranged on the outer side of the positioning sleeve can shield external magnetic force, the influence of external magnetic force interference on the magnetic block assembly is reduced, the magnetic force of the magnetic block assembly can accurately act on the rotating shaft, accurate braking control over the rotating shaft is achieved, and the service life of the rotating shaft is prolonged. The problem that the electromagnet may suffer from interference signals of an external electromagnetic field, an earth magnetic field and the like in the actual application process is solved.

Provided is a downhole device, method, and well system. The downhole device, in one aspect, includes a member and a movable element positioned about the member, the movable element configured to move a stroke distance (D) from a first position to a second position. The downhole device, in this aspect, further includes a ferromagnet assemblies fixed to one of the member or the movable element, and a first electromagnet assembly and one or more additional electromagnet assemblies fixed to an other of the movable element or the member, wherein the first electromagnet assembly is operable to receive electric power to produce a first electromagnetic field having an electromagnetic polarity (Y) and the one or more additional electromagnet assemblies are operable to receive additional electric power and each produce additional electromagnetic fields that alternate between having a second electromagnetic polarity (Y′) opposite the electromagnetic polarity (Y), and the electromagnetic polarity (Y).