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80results about How to "Achieve levitation" patented technology
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Electric electromagnetic hybrid suspension system
The invention discloses an electric electromagnetic mixing levitation system, which is characterized by the following: the invention is mixed with permanent-magnet EDS and electro-magnetism EMS which connect by adapting piece; the permanent-magnet EDS and electro-magnetism EMS are installed on suspension device under the magnetic levitation train and on the path; the permanent-magnet EDS provides main suspension power for the whole suspension system; the electro-magnetism EMS provides small parts of suspension power for system and damping power in vertical direction for permanent-magnet EDS to enhance the anti-interference ability of system and make the all system suspense steady. The invention reduces the fabrication cost of train and path.
Owner:NAT UNIV OF DEFENSE TECH
Five-degree-of-freedom (five-DOF) bearing-free permanent magnet synchronous motor
ActiveCN102377298AAchieve levitationSimple structureDynamo-electric machinesMagnetic holding devicesSynchronous motorMagnetic bearing
The invention discloses a five-degree-of-freedom (five-DOF) bearing-free permanent magnet synchronous motor. Left and right conical bearing-free permanent magnet synchronous motors respectively arranged at the left and right ends of a motor shell are symmetrically connected to a mechanical rotating shaft; each conical bearing-free permanent magnet synchronous motor consists of a conical stator, atorque winding, a suspension force winding and a conical rotor; and a permanent magnet is mounted on the outer surface of the conical rotor, a jacket is fixedly sleeved outside the permanent magnet, the conical rotor is fixedly arranged on the mechanical rotating shaft, the conical stator is provided with a plurality of through slots in the axial direction, each through slot is divided into an inner layer and an outer layer in the radial direction, the suspension force winding and the torque winding are respectively placed in the inner layer and the outer layer, the pole number of the torque winding is as same as that of the permanent magnet, and the difference between the pole number of the suspension force winding and the pole number of the torque winding is 2. The five-DOF bearing-freepermanent magnet synchronous motor can simultaneously realize radial and axial five-DOF suspension of the rotor without an additional magnetic bearing, has the advantages of high integration, reducedvolume and high critical rotating speed, and is easy to realize high-power ultrahigh-speed operation.
Owner:ZHENJIANG YUANDONG ELECTRIC MOTOR
Magnetic suspension vibration isolation platform
ActiveCN103291832AAchieve levitationAchieve isolationNon-rotating vibration suppressionControl signalEngineering
Owner:HARBIN INST OF TECH
Micro-electro-mechanical system (MEMS)-based vibration energy acquisition device
InactiveCN102694452ARealize acquisitionAchieve levitationBatteries circuit arrangementsElectric powerGraphiteAmbient vibration
The invention discloses a micro-electro-mechanical system (MEMS)-based vibration energy acquisition device. The MEMS-based vibration energy acquisition device comprises an upper pyrolytic graphite thin plate, a suspended permanent magnet, a lower pyrolytic graphite thin plate and a lifting permanent magnet, wherein the upper pyrolytic graphite thin plate, the suspended permanent magnet and the lower pyrolytic graphite thin plate are arranged from top to bottom in sequence; an upper induction coil is arranged on the lower side surface of the upper pyrolytic graphite thin plate; and a lower induction coil is arranged on the upper side surface of the lower pyrolytic graphite thin plate. According to the MEMS-based vibration energy acquisition device provided by the invention, a permanent magnet serves as a suspension body; anti-magnetic material structures are respectively arranged above and below the permanent magnet; an induction coil is arranged on each anti-magnetic material; in order to realize the suspension of the permanent magnet well, the lifting permanent magnet is also arranged on the upper anti-magnetic material structure; in a static state, the permanent magnet is suspended between the two anti-magnetic material structures; and under the action of ambient vibration, the permanent magnet moves up and down without friction, so that induced electromotive force is generated in the upper and lower induction coils and is stored by a power storage loop.
Owner:ZHENGZHOU UNIV
Ultralow-density high-strength vitrified china ball proppant and preparation method thereof
InactiveCN106883838AGood drainage and permeabilityReduce pollutionFluid removalDrilling compositionSlurryMaterials science
The invention provides an ultralow-density high-strength vitrified china ball proppant. The ultralow-density high-strength vitrified china ball proppant comprises the following ingredients in percentage by mass: 20-70% of SiO2, 1-50% of Al2O3, 10-30% of B2O3, 0-15% of CaO, 0-15% of MgO, 0-5% of Na2O, 0-5% of Fe2O3, 0-5% of BaO, 0-5% of BeO, 0-5% of Bi2O3, 0-5% of La2O3, 0-5% of PbO, 0-5% of TiO2, 0-5% of ZnO and 0-5% of ZrO2. The invention also provides a preparation method of the ultralow-density high-strength vitrified china ball proppant, the preparation method comprises the step of preparation of a precursor, and the preparation of the precursor comprises the sub-steps of adding raw materials into a solvent to obtain a mixed slurry, and then performing grinding and drying to obtain a precursor powder. The prepared proppant is ultralow in density and high in strength.
Owner:山东雅丽支撑新材料科技有限公司 +1
Micro-projection device and magnetic suspension base
ActiveCN104199249AAchieve levitationElectromagnets without armaturesBatteries circuit arrangementsEngineeringMagnetic orientation
The invention relates to the technical field of magnetic suspension and projection, and discloses a micro-projection device comprising a micro-projector. The micro-projection device is characterized by further comprises a main suspension magnet, wherein the micro-projector is fixed on the main suspension magnet; the magnetic field direction of the magnetic field center of the main suspension magnet is the vertical direction, and is used for enabling the micro-projector to suspend in a magnetic field environment. The invention also discloses a magnetic suspension base which comprises a shell and at least three base magnets located inside the shell; the magnetic field direction of the center of the combined magnetic field formed by the at least three base magnets is in the vertical direction; the magnetic field intensity of the center of the combined magnetic field is smaller than the magnetic field intensity of the combined magnetic field near each base magnet, and is used for enabling the micro-projection device to suspend. According to the invention, suspension of the micro-projector is realized in the magnetic field environment as the micro-projector is fixed on the magnet.
Owner:BOE TECH GRP CO LTD
Ventricular auxiliary pump
The invention relates to a ventricular auxiliary pump. The pump comprises a drainage cone, an impeller, a motor, a fixed magnet ring and a movable magnet ring which are arranged in a hollow housing, and an inlet and an outlet are formed in the housing. The drainage cone is opposite to the inlet and sleeved with the impeller, and a flow passage is formed in the impeller. A rotor of the motor is fixedly arranged on the impeller. According to the pump, when the impeller is driven by the motor to rotate, the impeller maintains a suspension state in the radial direction by means of a pair of the magnet rings, and the suspension state of the impeller in the radial direction is achieved under the action of a stator and the rotor. The pump has the advantages of being simple in structure and smallin size, and the pump has higher flood compatibility.
Owner:SHENZHEN CORE MEDICAL TECH CO LTD
Magnetic levitation vibration isolation platform
InactiveCN102691747ASimple structureGood vibration isolationNon-rotating vibration suppressionEngineeringVibration isolation
The invention discloses a magnetic levitation vibration isolation platform, relating to the technical field of a magnetic levitation vibration isolation platform. Through the invention, the shortcoming that the existing vibration isolation platform has a natural frequency is overcome. In the vibration isolation platform disclosed by the invention, a static bearing unit comprises a rotor and a stator; the primary level of a Z-direction adjustment unit is formed by coaxially connecting multiple circular coils in series sequentially along the Z direction, and the secondary level is in a bilateral structure; and an X-direction adjustment unit comprises a primary level and a secondary level. The rotors of multiple static bearing units, the secondary level of the Z-direction adjustment unit, the secondary level of the X-direction adjustment unit and the secondary level of the Y-direction adjustment unit are fixed on the bottom surface of a moving substrate; the stators of multiple static bearing units, the primary level of the Z-direction adjustment unit, the primary level of the X-direction adjustment unit and the primary level of the Y-direction adjustment unit are fixed on a fixed substrate; and the planes of the moving substrate and the fixed substrate are parallel to each other, and an air gap exists between the two. The magnetic levitation vibration isolation platform disclosed by the invention easily forms a large magnetic levitation vibration isolation platform, has simple structure and high vibration isolation precision, is easy to control and can be applied to vacuum environment.
Owner:HARBIN INST OF TECH
Magnetic suspended tumbler bonsai
InactiveCN103921612AAchieve levitationFashionable and interestingSpecial ornamental structuresReceptacle cultivationEngineeringMechanical engineering
The invention discloses a magnetic suspended tumbler bonsai. The magnetic suspended tumbler bonsai comprises a base and a potted landscape, wherein a groove is formed in the top surface of the base, a first magnet is fixed at the bottom of the groove, a tumbler structure is fixed at the bottom of the potted landscape, the tumbler structure is matched with the groove and is arranged in the groove, a second magnet is also fixed in the tumbler structure, the first magnet and the second magnet are opposite to each other, the magnetic poles of opposite surfaces of the first magnet and the second magnet are the same, the tumbler structure is a water tray with a circular arc-shaped bottom surface, and a water inlet through hole is formed in the side wall of the bottom end of a pot body of the potted landscape. According to the magnetic suspended tumbler bonsai, the tumbler structure is arranged at the bottom of the potted landscape, so that the potted landscape can come back after inclining under the action of an external force; and the opposite magnetic poles of the first magnet and the second magnet are the same, the suspension is achieved, the style is novel and the magnetic suspended tumbler bonsai is interesting.
Owner:陈玉婷
Hydrodynamic pressure suspension double-flow pump
InactiveCN103216453APlay the role of heat dissipationAchieve levitationPump componentsBlood pumpsImpellerEngineering
The invention provides a hydrodynamic pressure suspension double-flow pump, relating to an impeller ultra-small pump which has no external mechanism axis and is driven magnetically. The pump comprises two mutually separate flowing channels; each flowing channel consists of an inlet, an impeller, a pressure water chamber and an outlet; and the geometrical parameters of the flowing channels are the same or different; a stator of the pump is embedded in a pump shell, a permanent magnet is embedded in a rotor; and the stator and the permanent magnet are arranged opposite along a radial direction; a radial gap is formed between the internal surface of the pump shell and the external surface of the rotor, so that liquid hydrodynamic support for restricting axial movement is formed during normal operation of the pump; an axial gap is formed between the front cover plate of each impeller and the corresponding pump cover, so that liquid hydrodynamic support for restricting rotor axial movement is formed during the normal operation of the pump. In such a way, the rotor can be suspended in the pump cavity during normal operation. The pump provided by the invention can be used for meeting double-flow use requirement of different flows and pressures, and good flowing condition can be effectively and favorably formed in the internal cavity of the pump shell, and moreover, the operation reliability of the pump can be improved.
Owner:TSINGHUA UNIV
Magnetic susceptibility measuring device and method based on magneto-Archimedes levitation
InactiveCN104007405AImprove protectionAchieve levitationSusceptibility measurementsMagnetic susceptibilityLevitation
The invention provides a magnetic susceptibility measuring device based on magneto-Archimedes levitation. The device comprises a magnetic field generating device, a measuring container, a magnetic field regulating device and a remote observing system, wherein the measuring container is placed in the magnetic field generating device, the magnetic field generating device comprises an upper support, a lower support, a first electromagnet and a second electromagnet, the upper support and the lower support are fixed through four screws matched with nuts, the first electromagnet is placed in the hollow portion of the upper support, the second electromagnet is placed in the hollow portion of the lower support, the same magnetic poles of the first electromagnet and the second electromagnet are opposite, the first electromagnet and the second electromagnet are connected in parallel and then connected with the magnetic field regulating device in series, and the remote observing system comprises a camera and a computer. According to the magnetic susceptibility measuring device based on magneto-Archimedes levitation, magnetic induction intensity can be effectively controlled through the magnetic field regulating device, and then a wider magnetic susceptibility measurement range is realized; the distance between the two electromagnets can be adjusted as needed during measurement, measuring span is enlarged, and the flexibility of the device is improved greatly.
Owner:NORTHEASTERN UNIV LIAONING
Flexibility pneumatic elevation-type transfer machine and using method thereof
The invention discloses a flexible pneumatic lift-type transfer machine and a use method thereof, which belong to the technical field of mobile handling equipment and solve the problem that the lifting coverage area of the existing transfer equipment is small. The transfer machine of the present invention includes a base, a column and a cantilever, and the column is fixed on the base; the cantilever is rotatably arranged on the top of the column, and also includes a pneumatic balance hoist; the The cantilever includes a long section and a short section; the division point of the long section and the short section is the point where the cantilever is rotatably connected to the column; the pneumatic balance hoist is set on the short section At the end, the steel wire rope in the pneumatic balance hoist protrudes toward the end of the long section along the upper surface of the cantilever. The invention can be easily moved and transported, has high stability, and has the effect of increasing the hoisting coverage area compared with the prior art.
Owner:铮孚智能工程(上海)有限公司
Azimuth drive support system structure of inertially stabilized platform
ActiveCN103217156AReduce frictionIncreased carrying capacity of the platformNavigation by speed/acceleration measurementsAttitude controlAzimuth directionStator
The invention relates to an azimuth drive support system structure of an inertially stabilized platform. The structure includes an azimuth frame body structure part composed of an azimuth inner frame and azimuth outer frames; an azimuth drive part composed of an azimuth motor stator and an azimuth motor rotor; an azimuth support part composed of a radial magnetic suspension bearing rotor, a radial magnetic suspension bearing stator, an axial magnetic suspension bearing rotor, and an axial magnetic suspension bearing stator; and a magnetic suspension bearing protection part composed of a deep groove ball bearing and a thrust bearing. The azimuth drive structure realizes control on the degree of freedom of azimuth direction, and isolates aircraft azimuth direction angular motion. The azimuth support structure realizes active suspension of the azimuth inner frame, enhances the bearing capacity, and can actively control azimuth frame torsion, thus effectively improving the platform stabilization accuracy. The deep groove ball bearing and the thrust bearing in the azimuth magnetic suspension protection structure are used for generating a fixed protective gap, thus avoiding azimuth magnetic suspension bearing pull-in. The invention simplifies the structure design of a heavy load inertially stabilized platform, improves the platform bearing capacity and stabilization accuracy, and is suitable for aerial remote sensing and target tracking.
Owner:BEIHANG UNIV
Method and system for non-contact multi-focus ultrasonic phased array suspension pipetting
ActiveCN111111585AEnable mobilityAchieve levitationLaboratory glasswaresEnergy based chemical/physical/physico-chemical processesVoltage amplitudeComputer-on-module
The invention discloses a system for non-contact multi-focus ultrasonic phased array suspension pipetting. The system comprises a computer module, a PWM control module, an adjustable stabilized voltage supply module, a driving module, an ultrasonic array module and a liquid drop generation module; the computer module sends a received instruction to the PWM control module, and the PWM control module calculates a PWM wave frequency and a PWM wave duty ratio corresponding to the instruction; the logic input channel of the driving module is controlled according to the PWM wave frequency and the PWM wave duty ratio obtained by calculation; the adjustable stabilized power supply module provides an amplification power supply for the driving module, so that the output port of the driving module generates PWM waves with the same voltage amplitude as the adjustable stabilized power supply module, and the PWM waves generated by the output port of the driving module are input into the ultrasonic array module or the liquid drop generation module; the ultrasonic array module generates a vibration and standing wave sound field after receiving the PWM waves to realize liquid drop suspension; and after the liquid drop generation module receives the PWM waves, the capture and transfer of the liquid drops are realized.
Owner:HANGZHOU DIANZI UNIV
Lifting type magnetic suspension device
ActiveCN111726038AAchieve levitationRealize automatic reset suspensionMagnetic holding devicesStatorEngineering
The invention discloses a lifting type magnetic levitation device, and belongs to the technical field of magnetic levitation control. The device comprises a stator, a floater, a support plate, a lifting mechanism, a centering mechanism, a rack and a system panel, The stator arranged on the support plate is an annular magnet comprising more than three magnetic field change intervals, the more thanthree magnetic field change intervals are uniformly distributed on the annular magnet, and the more than three magnetic field change intervals enable a magnetic field of the stator to form an annularwavy magnetic field with local weakening or enhancement. The floater arranged on the system panel comprises a central magnet and positioning magnets which are the same as the magnetic field change intervals in number and correspond to the magnetic field change intervals in position. The central magnet provides magnetic repulsion to lift the floater, and the positioning magnets are positioned between two adjacent magnetic field gaps of the stator by means of magnetic attraction to overcome horizontal rotation or oscillation of the floater. The controller controls the centering mechanism and thelifting mechanism to achieve the automatic resetting and jacking of the falling floater and the dynamic suspension of the floater.
Owner:河北腾云信息技术有限公司
Bevel gear transmission pipeline robot
The invention discloses a bevel gear transmission pipeline robot. The bevel gear transmission pipeline robot comprises an industrial personal computer and a main body structure. The main body structure comprises a supporting plate, two drive devices which are rotationally arranged on the supporting plate and a first controller which is fixedly arranged on the supporting plate. Each drive device comprises a drive roller and two drive rolling wheels which are arranged at the two ends of the drive roller. Each drive rolling wheel comprises a first bevel gear, a second bevel gear, a first connecting piece and a rolling wheel body. Each industrial personal computer comprises a first support. The first support is provided with a second controller, a display screen, a control button, a cable take-up mechanism and a battery. The take-up mechanism comprises a second motor, a coiling block, a cable wound on the coiling block and a length meter. The bevel gear transmission pipeline robot is adopted to carry out pipeline detection, operation is convenient, the intelligent degree, the detecting precision and the efficiency are high, and the problem of detection is difficulty carried out throughmanual work is solved.
Owner:南京管科智能科技有限公司
Superconduction outer rotor motor towed disc shearing device
InactiveCN108637352ASolve temperature field differencesEase of industrial applicationShearing machinesShearing toolsHeat resistanceEngineering
The invention discloses a superconduction outer rotor motor towed disc shearing device, and belongs to the technical field of metallurgy engineering. The device is characterized by comprising a vacuumone-way valve, a cutter head, an outer cylinder block, left and right annular end covers, an inner cylinder barrel, a superconduction outer rotor motor, and a 3D printing space bracket; the inner cylinder barrel sleeves the superconduction outer rotor motor through key connection; the outer cylinder block with a boss on the periphery sleeves the outer side of the inner cylinder barrel; the left and right annular end covers are connected with the left and right end surfaces of the inner cylinder barrel the outer cylinder block through left and right screw sets, and the 3D printing space bracket is mounted in an annular cavity formed therebetween; air is extracted through the vacuum one-way valve in the annular cavity to realize a heat resistance vacuum environment; the 3D printing space bracket can prevent deformation and inward sinking under the effects of atmospheric pressure and shearing force; the superconduction outer rotor motor is applied to tow, so that the superconduction suspension of an outer rotor relative to a stator can be realized; and through control of a magnetic field of the stator, the cutter shearing force control is realized, so that the shearing end surface quality is guaranteed.
Owner:TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
System and method for repeatedly capturing microspheres based on pulse laser
ActiveCN110097994AAchieve captureLimit quantityNeutron particle radiation pressure manipulationMicrosphereTrapping
The invention discloses a system and a method for repeatedly capturing microspheres based on pulsed laser. Left optical fiber is connected to the input side of a left optical coupler, the output sideof the left optical coupler is connected through left fused optical fiber, the left fused optical fiber is fused with a capillary, the capillary is fused with right fused optical fiber, the right fused optical fiber is connected with the output side of a right optical coupler, and the input side of the right optical coupler is connected with right optical fiber. Left continuous laser and right continuous laser are simultaneously oppositely emitted into the capillary to form an optical trap trapping region. The left pulse laser and the right pulse laser act on microspheres, and the power of theright pulse laser is adjusted, so the the left pulse laser and the right pulse laser act on the microspheres at the same time, and the microspheres bounce off the original position and move to the inside of the optical trap capture region, so the stable capture of the microspheres can be realized. According to the method, the microspheres are separated from the surface of a microcavity by the pulse laser and enter the optical trap trapping region, so the the branching and trapping of the microspheres can be realized, the repeated trapping of single particles can be realized, repeated loadingof the particles is not needed, and the system can be applied to environments such as air, vacuum and the like.
Owner:ZHEJIANG UNIV
Permanent magnet synchronous motor
ActiveCN104242577ARealize functionFunction realization of drive motorMagnetic circuit rotating partsElectric machinesPermanent magnet synchronous motorPermanent magnet synchronous generator
The invention provides a permanent magnet synchronous motor which comprises a stator iron core, a middle rotor, an adjusting rotor, an inner rotor and a magnetic suspension bearing. The stator iron core is provided with a first toothed groove. A drive winding and a control winding are disposed in the first toothed groove. A certain air gap is formed between the middle rotor and each first tooth. The middle rotor comprises second teeth provided with first permanent magnets. The N pole of each first permanent magnet point outwardly, and the S pole thereof points inwardly. The adjusting rotor is located on the inner side of the middle rotor. A certain air gap is formed between the middle rotor and the adjusting rotor. The adjusting rotor comprises third teeth. The bottom end of each third tooth is opposite to the inner rotor. Adjusting rotor windings are disposed among the third teeth. The inner rotor is located on the inner side of the middle rotor. A certain air gap is formed between the middle rotor and the inner rotor. The inner rotor comprises fourth teeth provided with second permanent magnets. By the permanent magnet synchronous motor, the problems that the power system of a hybrid power car in the prior art needs to be equipped with two motors, cost of the whole car is high, and the power system occupies large space are solved.
Owner:GREAT WALL MOTOR CO LTD
A caster wheel with a magnet for a luggage case
The invention discloses a caster wheel with a magnet for a luggage case, which can solve the above problems. The wheel seat and the wheel fork are no longer in contact with each other, there is no friction between the wheel seat and the wheel fork, noise can be reduced to a minimum, and the load capacity of the caster wheel is increased by a magnetic force. The caster wheel includes a wheel seat fixed on a wrapping corner of the luggage case, wherein a central shaft pin is connected with the wheel seat through the wheel fork, the bottom of the wheel fork passes through the wheel axle pin, thetwo ends of the wheel axle pin are connected with rollers, the bottom surface of the wheel seat is fixed with a first magnet, the top surface of the wheel fork is fixed with a second magnet, the firstmagnet and the second magnet are oppositely arranged with the same sex repulsion, the wheel seat is suspended above the wheel fork, and the central shaft pin passes through the wheel fork, the secondmagnet, the first magnet, and the wheel seat to form a connection.
Owner:PINGHU BENLUN LUGGAGE ACCESSORIES
Magnetic levitation driving device based on linear doubly-fed motor and magnetic levitation train system
The invention relates to a magnetic levitation driving device based on a linear doubly-fed motor and a magnetic levitation train system, the magnetic levitation driving device comprises a linear doubly-fed motor stator and a linear doubly-fed motor rotor, and the linear doubly-fed motor stator is connected with a traction substation through a feed cable; thrust generated by the linear doubly-fed motor is used for providing traction force in the horizontal direction, normal force generated by the linear doubly-fed motor stator and the linear doubly-fed motor rotor is used for providing suspension force in the vertical direction, and an energy storage structure for collecting and storing electric energy is further arranged on one side of the linear doubly-fed motor rotor. The electric energycomprises electric energy transmitted from the linear double-fed motor stator to the linear double-fed motor rotor in a non-contact manner. The maglev train system is driven by the maglev driving device. Compared with the prior art, normal force of the linear double-fed motor is used as suspension force to achieve rotor side suspension, meanwhile, the linear double-fed motor can transmit electricenergy to the rotor side in the running process, the system cost is reduced, and meanwhile the linear double-fed motor is safer and more reliable.
Owner:TONGJI UNIV
Novel three-dimensional ecological floating bed purification system
InactiveCN108751416AImprove purification effectEasy plantingClimate change adaptationBiological treatment apparatusShrimpEconomic benefits
The invention relates to a novel three-dimensional ecological floating bed purification system, which comprises a lower supporting frame and an upper supporting frame, wherein fish nets are arranged on the circumferential surface between the upper supporting frame and the lower supporting frame and the bottom surface formed by the lower supporting frame, and form a shape with an opening on the upper end and a cavity for aquaculture of fishes, shrimps and crabs inside, the upper supporting frame is provided with an upper cover, the upper cover is surrounded by an outer ring groove, the center of the upper cover is an inner through cavity, floating leaf plants are planted in the outer ring groove, planting pots are arranged on a cross bracket, aquatic plants are planted in the planting pots,artificial water grasses are tied in the middle of the lower surface of the lower supporting frame, and submerged plants are planted on the periphery. According to the present invention, with the novel three-dimensional ecological floating bed purification system, the water body can be purified while the economic benefits can be generated so as to substantially improve the enthusiasm of the operation personnel, such that the water body purification effect can be improved, and the considerable economic benefits can be generated.
Owner:SHANDONG ANALYSIS & TEST CENT
Driving method for field emission displays
InactiveCN1667673ALow data storage requirementsGray scale implementation method is simpleStatic indicating devicesField emission displayDisplay device
A drive method for a field emission display unit relates to a drive method for field emission display units and specific realization program, which is to divide indicating time Tline each line to subsegments in proportion with Tlineíñ20 / (2b-1)í†Tlineíñ21 / (2b-1)í†Tlineíñ22 / (2b-1)í†í¡í¡í†Tlineíñ2b-1 / 2b-1 accroding to the 2b grade of gradations of grey to be realized, wherein the overall time of subsegments is the indicating time Tline of each line, while every subsegment time represents a gradation of grey, showing the gradation by a voltage driving signal applied during the time subsegment practiced via a data electrode; beyond the represented gradations of grey, according to the voltage driving signal applied to different subsegments during indicating time each line, the overall time of different subsegments is the showing gradations of grey multiplies the indicating time of the first gradation, so it makes possible to show the proper gradations of grey.
Owner:SOUTHEAST UNIV
Method and system for generating vortex sound field by using transducer array
InactiveCN111069008AAchieve levitationEasy to controlElectrical transducersMechanical vibrations separationTransducerEngineering
The invention relates to a method and system for generating a vortex sound field by using a transducer array. According to the system for generating the vortex sound field by using the transducer array, a plurality of electroacoustic transducers are arranged facing to the same point in space; all electroacoustic transducers work at the same frequency; and the phase difference between adjacent electroacoustic transducers is equal to an integral multiple of 2 pi divided by the number of electroacoustic transducers involved in an experiment. By optimizing the structures of the electroacoustic transducers, an object can be suspended by the vortex sound field; and by changing the phase directions of the electroacoustic transducers, the rotation of the suspended object can be controlled. According to the method for generating the vortex sound field by using the transducer array, a pollution-free non-contact acoustic suspension technology is provided; and the pollution-free non-contact acoustic suspension technology can be used for suspending solids and liquids, can actively control the rotation speed of the suspended object, and can be widely applied to the research fields of material science, physical chemistry, medical biology and the like.
Owner:NORTHWESTERN POLYTECHNICAL UNIV
Superconducting maglev train
ActiveCN112046296ALow costImprove the utilization rate of magnetic energySliding/levitation railway systemsElectric propulsionVehicle frameLevitation
The invention relates to the technical field of rail transit, in particular to a high-temperature superconducting maglev train. The high-temperature superconducting maglev train comprises a frame, holding arms, Dewars, superconductors, permanent magnet tracks, iron cores, coils and power supplies, wherein the holding arms are arranged on the side face of the bottom of the frame, the Dewars are arranged at the bottom of the frame, the superconductors are arranged in the Dewars, the permanent magnet tracks are arranged below the Dewars, the iron cores are arranged below the permanent magnet tracks, the coils are arranged on the iron cores in a sleeving manner, and the positive electrodes and the negative electrodes of the power supplies are connected with two ends of the coils respectively.According to the high-temperature superconducting maglev train, levitation and guiding functions are achieved through the superconductors and the upper surface magnetic fields of the permanent magnettracks, a driving function is achieved through the lower surface magnetic fields of the permanent magnet tracks and the electrified coils, the maglev train achieves the levitation-guiding and drivingfunctions through the same permanent magnet tracks, the cost is saved, the magnetic energy utilization rate of the permanent magnet tracks is increased.
Owner:SOUTHWEST JIAOTONG UNIV
Supporting roll device dragged by superconductive outer rotor electric machine
PendingCN108856297ASolve temperature field differencesEase of industrial applicationCounter-pressure devicesMetal rolling arrangementsCarrying capacityPower flow
The invention provides a supporting roll device dragged by a superconductive outer rotor electric machine, and belongs to the technical field of metallurgical engineering. The supporting roll device is characterized by comprising a vacuum check valve, a roll sleeve, an outer cylinder body, an inner cylinder, left and right annular end caps, the superconductive outer rotor electric machine and a 3Dprinting spatial support. According to connection relations, the superconductive outer rotor electric machine is sleeved with the inner cylinder, the outer circumference of the inner cylinder is sleeved with the outer cylinder body, the left and right annular end caps are connected with the inner cylinder and the outer cylinder body through left and right bolt groups so as to form an annular inner cavity, and the 3D printing spatial support is installed in the annular inner cavity; the outer circumferential surface of the outer cylinder body is sleeved with the roll sleeve, the vacuum check valve communicated with the annular inner cavity is installed in the middle of the right annular end cap, and the annular inner cavity is vacuumized through the vacuum check valve. According to the supporting roll device, a thermal-resistant vacuum environment is achieved, the 3D printing space supporting structure is arranged in the cavity, and a reasonable supporting effect is ensured; a superconductive magnetic suspension structure is formed between a stator and an outer rotor of the superconductive outer rotor electric machine, by adjusting the motor stator current, the supporting and carrying capacity is controlled, and the effect of the supporting roll is achieved.
Owner:TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
Device for cleaning dirt on surface layer of high-tension transmission line
ActiveCN109225961AGuaranteed stabilityAvoid the phenomenon of fallingDirt cleaningCleaning using toolsElectricitySurface layer
The invention provides a device for cleaning dirt on the surface layer of a high-tension transmission line. The device includes a dust removal base, a suspension mechanism arranged on the dust removalbase, a moving mechanism arranged on the dust removal base, an auxiliary support mechanism arranged on the dust removal base, a dust removal mechanism, a collection mechanism, and a control mechanism, wherein the dust removal mechanism and the collection mechanism are arranged on the dust removal base, and the control mechanism is arranged on the dust removal base and used for coordinated controlof the suspension mechanism, the moving mechanism, the auxiliary support mechanism and the dust removal mechanism. The device can carry out large-scale ash removal operation on the transmission line,the dust removal effect is better, workers do not need to climb up and down, the safety is high, the dust removal operation is achieved by taking power from the line, and the device is light, long inservice life, low in cost and use cost, and very good in effect.
Owner:STATE GRID CORP OF CHINA +1
Non-contact inclination angle controllable transport platform and control method
ActiveCN111252558AAchieve levitationAchieve Tilt ControlControl devices for conveyorsNon-mechanical conveyorsGear wheelClassical mechanics
The invention discloses a non-contact inclination angle controllable transport platform. The non-contact inclination angle controllable transport platform comprises a first table top, a second table top, an air floating platform upper layer plate and an air floating platform lower layer plate, wherein a pair of first supports are mounted on the first table top; a first rotary shaft and a second shaft are mounted on the first supports; one end of the first rotary shaft is connected with a first motor; the first rotary shaft is sleeved with a first circular gear; the first circular gear is engaged with a first sector gear; the second shaft is sleeved with the first sector gear; the second shaft is mounted on a second support at the same time; the second support is fixed to the second table top; a plurality of position sensors are evenly mounted on the side face of the air floating platform upper layer plate; and the first motor, a second motor and the position sensors are all in signal connection with a controller. According to the non-contact inclination angle controllable transport platform, by controlling the inclination angle of an air floating platform, rapid driving can be achieved, and meanwhile objects are prevented from sliding off; and the non-contact inclination angle controllable transport platform is carried on a horizontal guide rail sliding table or a mechanical arm, and large-range non-contact transport of the objects is easy to achieve.
Owner:JIANGSU UNIV OF SCI & TECH
Magnetic levitation device with levitation and guiding functions, magnetic levitation train and magnetic levitation system
PendingCN113415170ASimple structureImprove reliabilityElectric propulsionRepulsion forceHorizontal orientation
The invention relates to the technical field of magnetic levitation devices with levitation and guidance and particularly relates to a magnetic levitation device with levitation and guidance, a magnetic levitation train and a magnetic levitation system. Suspension reaction rails on two sides of the rail are arranged to be at a certain inclination angle, so repulsive force between the permanent magnets and the suspension reaction rails is inclined upwards, two components in the horizontal direction and the vertical direction are generated respectively, and suspension of the suspension train in the vertical direction is achieved through the vertical components; when the device loaded on the annular permanent magnet electric suspension system inclines towards one side, the repulsive force borne by the permanent magnet on the corresponding side is increased accordingly, the horizontal component is also increased accordingly, then reaction is generated on the device loaded on the annular permanent magnet electric suspension system, the device is pushed towards the opposite direction, and guiding of the load device is realized. According to the device, the track and the train are simple in structure, and the system is high in reliability, easy to implement and particularly suitable for medium-low-speed maglev train systems.
Owner:CHINA RAILWAY ERYUAN ENG GRP CO LTD
Large-damping efficiently-cooling radial passive permanent magnet bearing structure
InactiveCN109210078AShorten the axial lengthIncrease the critical speedBearing coolingBearingsInterference fitEngineering
The invention provides a large-damping efficiently-cooling radial passive permanent magnet bearing structure, comprising a stator permanent magnet which is in transition fit with a stator frame. A sliding bearing is arranged in the cavity of the stator permanent magnet; the outer side of the sliding bearing and the stator permanent magnet are in clearance fit; two sides of the stator permanent magnet are respectively bonded with a left plug and a right plug of the stator permanent magnet; a stator-rotor clearance is arranged between the inner side of the sliding bearing and the outer side of arotor sleeve; two sides of the stator-rotor clearance are respectively provided with an oil inlet and an oil outlet; a rotor permanent magnet assembly is installed on the inner side of the rotor sleeve in the manner of interference fit; the sliding bearing is built in the cavity of a radial passive permanent magnet bearing; and the gap between the sliding bearing and the rotor sleeve is filled with lubricating oil. The large-damping efficiently-cooling radial passive permanent magnet bearing structure of the invention effectively cools the bearing and a rotor, improves the rotation speed of the rotor, and enhances the stability of a bearing-rotor system at high a speed.
Owner:XIAN UNIV OF SCI & TECH
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