15502 results about "Electromagnet" patented technology

A system, including: an ear worn device configured to provide audio to a user's ear; a switch configured to receive physical contact from the user and, in response, alter an activation state of the switch; and a case configured to receive the ear worn device when not in use, wherein the case includes an electromagnet configured to magnetically attract the ear worn device, wherein changing the activation state of the switch causes the electromagnet to reduce attraction to the ear worn device to allow the user to more easily remove the ear worn device from the case.

The invention provides a self-adaptive anti-backlash planetary gear reducer and a working method thereof. The self-adaptive anti-backlash planetary gear reducer comprises an input shaft and a shell. An electromagnet coil, an electromagnet, a sliding block seat, a supporting seat, a sun gear and a second inner gear ring sequentially penetrate through one end of the input shaft from one end to the other end; the side, away from the input shaft, of the second inner gear ring is connected with an output shaft. A planet carrier is slidably arranged on the supporting seat in the radial direction, a first planet gear and a second planet gear are coaxially arranged on the planet carrier, a first inner gear ring is arranged on the inner side of the shell, and the sun gear, the first planet gear and the second planet gear are engaged with the first planet gear, the first inner gear ring and the second inner gear ring correspondingly; the electromagnet is fixed to the sliding block base, the sliding block base, the supporting base and the second inner gear ring are all rotationally connected with the input shaft, and the sliding block base can slide on the input shaft in the axial direction. And the sliding block seat is hinged with the planet carrier through a connecting rod. The speed reducer is simple in structure, has the self-adaptive anti-backlash capability, and can realize self-adaptive real-time elimination of the transmission backlash.

The invention provides a maglev train multi-suspension system predictive control method based on event triggering, which comprises the following steps: establishing a multi-electromagnet suspension system continuous dynamic model based on electromagnet parameters of a maglev train; in combination with the input time delay of the multi-electromagnet suspension system, the continuous dynamic model of the multi-electromagnet suspension system is sequentially processed based on a fourth-order Runge-Kutta method, and a discrete coupling time delay dynamic model of the multi-electromagnet suspension system is obtained; establishing a model prediction controller of the multi-electromagnet suspension system by combining the discrete coupling time delay dynamical model of the multi-electromagnet suspension system and the optimization problem; and updating a control signal of the model prediction controller according to a preset composite event triggering mechanism to obtain an initial control quantity, designing a time delay compensation strategy to carry out input time delay compensation on the initial control quantity, and obtaining a standard control quantity to control the multi-suspension system of the maglev train. According to the method, the system energy consumption is remarkably reduced while the good operation performance of the suspension system in a complex environment is guaranteed.

The charger according to the disclosure includes a rail body on which a rail is formed, a guide disposed to slide on the rail and configured to support a charging cable of the charger, wherein one of the rail body or the guide includes an electromagnet, and a magnet is provided at the other of the rail body or the guide which does not include the electromagnet, wherein movement of the guide along the rail may be restricted by operation of the electromagnet by applying a force to the magnet.

The invention relates to the technical field of turning machining, in particular to a numerical control turning machine tool for fastener machining, which comprises a machine shell, a tool rest column body, a tool apron body and a chuck, and further comprises a surface cover shell bolted to the tool apron body, a plurality of auxiliary rollers are rotatably connected to the inner side of the cover shell, a magnetic synchronous belt is further arranged on the inner side of the cover shell, and the magnetic synchronous belt is arranged on the outer side of the tool apron body. The side, close to the housing, of the tool apron body is further in bolting connection with a fixing plate, and the surface of the fixing plate is in bolting connection with a square electromagnet. The square electromagnet is started, and when the tool apron body moves, metal chips on the top and the side edge of the tool rest column body are attracted to the surface of the magnetic synchronous belt, so that the situation that the magnetic synchronous belt is directly contacted with the tool rest column body to be stained and damaged in a large area is avoided; in the process of adsorbing the metal chips, the metal chips cannot move slightly on the surface of the tool rest column body, the tool rest column body is not prone to being abraded, and the service life of the tool rest column body is prolonged.

The invention belongs to the technical field of automatic assembly, and discloses an automatic assembly system and method for a large nut of a water turbine ball valve, and the system comprises a mechanical arm, an end effector and an intelligent nut tightening control system. The end effector integrates an electromagnet adsorption mechanism, a servo drive rotating mechanism, a floating compensation mechanism and a visual recognition mechanism, nuts of different specifications are grabbed in a self-adaptive mode through an electromagnet, submillimeter-level accurate positioning is achieved through a laser galvanometer stereo camera, and the assembling posture is automatically adjusted in combination with the floating compensation mechanism. The intelligent control system adopts a staged tightening strategy, performs real-time monitoring through a torque sensor, and has a dual protection mechanism. The hydraulic turbine ball valve large nut assembling machine achieves full-automatic assembling of hydraulic turbine ball valve large nuts, has the advantages of being high in assembling efficiency, high in positioning precision, high in adaptability, reliable in quality and the like, solves the problems that manual assembling is large in labor intensity, many in potential safety hazards, poor in quality consistency and the like, and remarkably improves the assembling quality and efficiency of key parts of a hydropower station.

The invention belongs to the field of corrugated pipe detection, and provides a corrugated pipe detection test bench, which comprises a water tank, two sides of the water tank are fixedly connected with fixing seats, the fixing seats are slidably connected with sliding plates, telescopic electric push seats are connected between the sliding plates and the fixing seats, the sliding plates are fixedly connected with sealing mechanisms, and the sealing mechanisms are fixedly connected with the water tank. The two sealing mechanisms can fix and seal the two ends of the fixing base of the corrugated pipe, stretching assemblies are arranged in the sealing mechanisms, a rubber pipe is arranged between the two stretching assemblies, and the two stretching assemblies can fix the two ends of the rubber pipe. According to the corrugated pipe clamping device, the limiting mechanism and the positioning mechanism are started to clamp the corrugated pipe at the same time, at the moment, under the magnetic force effect of the electromagnet, the elastic assembly is in adsorption connection with the limiting mechanism, meanwhile, the supporting assembly is in adsorption connection with the positioning mechanism, and the middle of the corrugated pipe is fixed through the supporting assembly and the positioning mechanism; and elastic assemblies and limiting mechanisms are arranged on the two sides of the positioning mechanism to elastically limit the corrugated pipe.

The invention discloses a magnetic biochar composite adsorbent as well as a preparation method and water treatment application thereof, and relates to the technical field of adsorption materials. The preparation method consists of a biochar matrix and magnetic particles loaded on the surface and in pores of the biochar matrix, and comprises the following steps: preparation of the biochar matrix: step 1, firstly, selecting a biomass raw material; the magnetic charcoal composite adsorbent has unique structure and performance advantages, abundant pore structures and surface functional groups of the adsorbent can provide a large number of adsorption sites for pollutants, and due to the existence of magnetic particles, after the adsorption process is completed, the adsorbent only needs to be placed in an external magnetic field such as an electromagnet and a permanent magnet, so that the magnetic charcoal composite adsorbent can be used for adsorbing the pollutants. The adsorbent can be rapidly separated from the solution or the suspension, the separation time can be controlled within 1-10 minutes, the recovery efficiency of the adsorbent is greatly improved, the treatment cost is reduced, and the adsorbent can be repeatedly used and has good economical efficiency and environmental protection property.

A charger according to the disclosure includes a rail body on which a plurality of rails is formed; a plurality of guides that are correspondingly and slidably arranged on the plurality of rails and configured to support a charging cable of the charger; a plurality of electromagnets correspondingly disposed on the plurality of guides; and a control unit configured to control a position of the charging cable by operation of the plurality of electromagnets.

The invention relates to the field of aluminum material shearing, in particular to aluminum material shearing equipment for aluminum material display rack machining. Comprising a workbench, cutting equipment, a driving assembly, an electromagnet, a magnetic piece, a push rod I, a rotating block I, a supporting rod, a telescopic rod, a supporting block and the like. The workbench is fixedly connected with a driving assembly; the driving assembly is connected with cutting equipment; the driving assembly is connected with an electromagnet; the electromagnet is magnetically connected with a magnetic sheet; the magnetic sheet is fixedly connected with a supporting rod, and the supporting rod is connected with a rotating block I; the rotating block I is rotationally connected with a telescopic rod; the telescopic rod is connected with a supporting block. The supporting blocks are used for supporting the interiors of the aluminum strips, so that the cut positions of the aluminum strips cannot be bent and deformed inwards, and the problems that when the aluminum strips are cut, the cut positions of the aluminum strips can be bent and deformed towards the interiors of the aluminum strips, the aluminum strips cannot be completely attached during follow-up welding, the welding strength is low, and the welding difficulty is increased are solved.

According to the implantable magnetic suspension blood pump, an impeller is suspended in a containing cavity of a pump shell and can rotate around the central axis of the pump shell, and a motor comprises a motor stator assembly arranged in the pump shell and a rotor magnet array arranged on the impeller; the magnetic suspension device comprises an electromagnet arranged in the pump shell and a suspension magnet assembly arranged on the impeller. Active electromagnetic suspension force provided by the electromagnet and passive permanent magnet bias suspension force provided by the suspension magnet assembly act together to enable the impeller to maintain a balanced suspension state in the axial direction and the radial direction. The motor and the magnetic suspension device are independently controlled to effectively reduce the negative influence of low signal detection accuracy caused by magnetic field coupling, and the hybrid magnetic suspension structure reduces the power consumption of the magnetic suspension device; the arrangement mode of the electromagnet and the motor stator assembly enables the whole structure to be compact, and the size and the weight of the blood pump are reduced; the suspension position of the permanent magnet is accurately controlled by accurately controlling the gap and the position relation between the electromagnet and the suspension magnet assembly.

A morticed bolt keep to cooperate with a lock having a latch bolt which is slidable between a retracted position and an extended position. The morticed bolt keep comprises: an elongated body (5) to be positioned inside a hollow tubular member; a cavity to receive the latch bolt in its extended position; a latch bolt engager (25) which is displaceable between a rest state and an actuated state; a magnetic actuator (31, 32) to displace the latch bolt engager from its rest state to its actuated state upon activation; and an electromagnet (50) cooperating with a magnetic catch (55) fixed to the magnetic actuator, the electromagnet being configured to temporarily attract the magnetic catch to maintain the latch bolt engager in its actuated state.

The invention discloses a maglev train suspension system electromagnet fault detection algorithm, which comprises the following steps: establishing a suspension system model of a maglev train, and designing a state observer; an electromagnet signal is collected and processed, and a residual value is obtained; the residual value is compared with a threshold value, and fault information of the electromagnet of the maglev train suspension system is obtained; and fault information of the electromagnet is reconstructed. The fault of the electromagnet can be effectively detected and reconstructed by constructing the third-order linear extended state observer (LSEO), system uncertainty, noise and the like can be dealt with through the self-adaption and self-calibration functions of the third-order linear extended state observer, robustness is enhanced, and detection reliability is improved. Fault information of the magnetic levitation system can be quantitatively estimated through LSEO for fault reconstruction, the fault type and position can be accurately identified, and false alarm and missing alarm can be avoided. Meanwhile, fault reconstruction provides an important basis for maintenance, and maintenance personnel can quickly position and take targeted measures, so that the maintenance efficiency is improved, and the cost is reduced.

The invention belongs to the technical field of geological exploration, particularly relates to a high-adaptability multi-type geological exploration sampling device and an accurate sampling method.The high-adaptability multi-type geological exploration sampling device and the accurate sampling method aim to solve the problems that a drill bit is stuck and stratified sampling is difficult, and the high-adaptability multi-type geological exploration sampling device comprises a base, a vertical plate, a lifting plate and a driving cylinder with the drill bit; a first annular groove is formed in the outer wall of the driving cylinder and matched with the first circular ring, downward-pressing drilling and upward-lifting resetting of the drill bit are achieved, a second annular groove is formed in the drill bit, and the flow direction of hydraulic oil is controlled through a second circular ring connected with a fixing rod; during lifting, hydraulic oil is injected into the second hydraulic channel, the trapezoidal collecting box extends out to scrape hole wall samples, the electromagnet and the iron block are matched to adjust the position of the second circular ring, the working states of the teeth and the collecting box are switched, drill bit jamming is reduced, hole wall sampling at any depth is supported, and exploration efficiency is improved.

The invention discloses an automatic fire extinguishing device for automatically sensing thermal runaway of a battery of a new energy vehicle. The automatic fire extinguishing device comprises a base, a control box, a fire blanket body, a release assembly and a fire detection probe. The whole base is of a frame-shaped structure and is fixed to a preset position of a vehicle, and a fixed joint strip is arranged on the top face of the base. The fire blanket body is rectangular and comprises a base cloth layer, a coating and a heat insulation filling layer, a positioning strip is arranged on the top face, and heavy drooping blocks are arranged on the two sides. The release assembly comprises a fixed seat, a splicing seat, an electromagnet, a melt strip and a joint block, and the electromagnet adsorbs the heavy drooping block through magnetic force so as to store the fire blanket; the fire behavior detection probe comprises a spectrum sensor, a smoke sensor and an infrared temperature sensor and is used for monitoring fire behavior in real time. When a fire occurs, the control box receives a detection signal to cut off a power supply of the electromagnet, or the melt strip melts at a high temperature to actively cut off power, so that the weight drop block drops to pull the fire blanket body to be completely unfolded and cover a fire area, and the fire is inhibited by blocking oxygen.

The utility model discloses a plastic pipe drop hammer impact test device and equipment. The plastic pipe drop hammer impact test device comprises a base; the guide part is arranged on the base and is provided with a vertical cavity; the test mechanism comprises a test board part, an impact part and a driving part, the test board part is arranged on the base and corresponds to the cavity, the driving part comprises a pulley assembly, a traction rope and a driving part, the pulley assembly is arranged on the guide part, and one end of the traction rope is connected with the driving part; the impact part comprises a release electromagnet assembly and an impact head assembly, the release electromagnet assembly is connected with the traction rope, the release electromagnet assembly is used for arranging the impact head assembly, and the release electromagnet assembly is suitable for adsorbing or loosening the impact head assembly. A test sample is loaded through the test board part, the pulley assembly ensures that the impact part moves vertically, the driving part controls the impact part to rise to the to-be-tested height, and the electromagnet assembly is controlled to be released, so that the impact head assembly freely falls, and the device is simple in structure, easy and convenient to operate and low in cost.

The invention provides a multi-dimensional supporting leg structure for lightweight steel ring splicing equipment, and relates to the field of tunnel engineering. The mounting base is fixedly connected with the frame, the telescopic driving mechanism is arranged between the mounting base and the supporting leg assembly, the angle adjusting mechanism is arranged between the cylinder barrel and the mounting base, and the self-locking mechanism is used for locking the cylinder barrel and the piston rod when the driving unit fails. The telescopic driving mechanism is composed of a cylinder barrel, a piston rod and a driving unit, the angle adjusting mechanism is driven through a first rotating shaft and a second rotating shaft which are perpendicular to each other and corresponding rotation, so that the cylinder barrel achieves double-shaft swing adjustment, the self-locking mechanism is composed of a locking rack, a movable tooth claw, a reset spring, an electromagnet and a permanent magnet, and power-on unlocking and power-off self-locking are achieved. According to the structure, the supporting polygon is obviously enlarged under the complex basic condition, the anti-overturning stability of equipment is improved, reliable supporting is kept when a hydraulic system fails, and the safety and adaptability of steel ring splicing operation in a tunnel are improved.

The invention relates to the technical field of motor shaft size detection, in particular to motor shaft size detection equipment which comprises a detection table, a fixing mechanism, a length detection mechanism, a diameter detection mechanism and a cleaning mechanism. The length detection mechanism comprises a top plate, a detection plate, a first laser distance measuring sensor and a moving assembly, the cleaning mechanism comprises a transverse plate, an electromagnet, a sponge eraser, a telescopic assembly, a rotating assembly and a transmission assembly, and the diameter detection mechanism comprises a sliding frame, a sliding assembly and two second laser sensors. The length of the motor shaft can be detected, the diameter of the motor shaft can be obtained by arranging the two second laser sensors, the length and the diameter of the motor shaft can be synchronously detected by using one detection device, and the size detection efficiency of the motor shaft can be improved.

The presently disclosed secure electromagnetic docking systems provide a simplified locking interface for the user and improved security overall. The secure electromagnetic locking mechanisms are hidden from view and access by a would-be thief, which is distinct from the generally accessible nature of prior art cable and lock mechanisms. The secure electromagnetic docking systems may also be locked and unlocked via a graphical user interface (GUI), thereby eliminating a requirement that the user successfully secure a cable and lock mechanism to a computing device and a fixed object. The secure electromagnetic docking systems may comprising one or more ferromagnetic structures are biased to a locked position. An electromagnet is selectively powered to move the one or more ferromagnetic structures to an unlocked position. In the unlocked position, one or more spring loaded ejectors are permitted to eject the computing device from the base.

The invention discloses size detection equipment for casting perforation processing, and relates to the technical field of size measurement. The device comprises a base, a supporting plate and a displacement assembly. The detection part goes deep into a workpiece hole through the contact ball, and the laser emitter and the light sensor are used for detecting the contact position, thereby realizing high-precision size measurement. The displacement assembly adopts the design of a negative pressure rotating cylinder and a resistance sliding rod, adjusts the displacement of a contact ball according to the rotating speed, and flexibly adapts to different hole requirements. Through the control of the planetary gear and the electromagnet, the contact ball can rotate to realize multi-angle detection. The detection table is driven by a central electric cylinder and an edge inclination control electric cylinder to stably adjust the posture of a workpiece. The device is high in automation degree and convenient to operate, and overcomes the defects of low precision, poor efficiency and single-direction detection of traditional manual measurement.

The invention provides a numerically-controlled machine tool workpiece auxiliary positioning mechanism and a positioning method. The numerically-controlled machine tool workpiece auxiliary positioning mechanism comprises a positioning assembly, and the positioning assembly comprises a bottom plate, four limiting seats, a driving rod, a driving disc, a sliding block, an L-shaped connecting rod, a supporting rod, a positioning seat, a limiting groove, a positioning clamping plate, a sliding seat, a sliding rail, a first electromagnet, a supporting spring and two guide rods. Under cooperation of structures such as the L-shaped connecting rods, the supporting rods, the sliding blocks and the positioning bases, the four positioning clamping plates move synchronously, and therefore when a workpiece is clamped, automatic positioning of the workpiece can be achieved, and the workpiece is made to move to the center position of the bottom plate; compared with the prior art, when a workpiece is clamped, automatic positioning of the workpiece can be achieved, the workpiece is made to move to the center position of the bottom plate, when the workpiece is rectangular, the corresponding supporting springs can be compressed in a self-adaptive mode, then the four positioning clamping plates can be tightly attached to the workpiece, and the positioning effect on the workpiece is guaranteed.

The scraper conveyor comprises a mounting frame, a conveying bin is mounted at the top end of the mounting frame, a feeding pipe is mounted above one end of the conveying bin, a discharging opening is formed below the other end of the conveying bin, a transmission shaft in the conveying bin is connected with a chain in a sleeving mode, and a scraper is mounted at the side end of the chain; and a flow monitor is mounted in the feeding pipe. According to the conveying device, through the arrangement of the scraper, the flow monitor, the electric push rod, the electromagnet, the extension plate and the extension locking mechanism, the length of the scraper can be adjusted according to the flow of materials in the conveying bin, then the material conveying amount of the scraper can be increased or decreased, and the conveying efficiency is improved by adjusting the length of the scraper in real time. The working state of the scraper can be adjusted in time according to material flow changes, effective conveying of materials is ensured, excessive or insufficient conveying is avoided, and meanwhile the situation that the bottom is clamped can be avoided.

The invention discloses an anti-unmanned aerial vehicle power rotary flying rope net capturing device and a control method thereof, and belongs to the technical field of unmanned aerial vehicles. An electromagnet circuit is controlled to be switched on through a relay, so that an electromagnet instantly loses attraction force, and the four brushless motors are rapidly, synchronously and accurately released; the brushless motor is used as a power source for unfolding the catching net to drive the catching net to unfold and cover a target. Wherein the magnet vane is attracted with the electromagnet when the electromagnet is powered off so that the four corners of the catching net can be fixed to the unmanned aerial vehicle, the influence of the electromagnet on the brushless motor is effectively isolated in the whole process, and the flight stability is ensured. The net ring can rotate freely, the direction of the catching net traction rope is kept stable, and winding with a motor or a propeller is avoided; the ball bearing and the magnet vane jointly ensure the height of the catching net traction rope, the catching net device is prevented from being separated from the motor, and the whole device can achieve synchronous and safe falling of all components and achieve the recovery function.

The invention discloses an elevator steel wire rope detection device and method, and the device comprises the following steps: firstly, carrying out the pre-scanning of an initial magnetic field, then carrying out the magnetization of a steel wire rope through a multi-stage adjustable electromagnet, and controlling the magnetization intensity through a current; the method comprises the following steps: firstly, pre-scanning a magnetic field, then, carrying out real-time monitoring and feedback control on the magnetized magnetic field, carrying out synchronous acquisition through a multi-modal sensor, then, extracting multi-domain features, receiving a feature vector set by a model, carrying out dynamic weighting operation on the feature vector set, and finally, outputting a task. The problem that initial magnetic fields of the steel wire ropes are inconsistent can be effectively solved, data are synchronously collected through the multi-mode sensor, effective distinguishing and quantitative evaluation of different types of defects such as wire breakage, abrasion, corrosion and fatigue damage are achieved, and the defects of an existing detection mode in defect subdivision and quantification are overcome.

The invention relates to a detection method and system for an electromagnet assembly for rail transit and a terminal, and relates to the technical field of electromagnets, and the detection method comprises the steps that an electromagnet image is selected from image detection information according to preset electromagnet characteristics; determining an electromagnet model according to the electromagnet image; determining a reference current value according to the electromagnet model; determining a reference magnetic force value according to the electromagnet model; determining a detected magnetic force value according to the detected magnetic force value; if the detected current value is not consistent with the reference current value, a preset clamping device is controlled to move the electromagnet to the abnormal area; if the reference magnetic force value is consistent with the detection magnetic force value, obtaining a detection current value of the electromagnet assembly; and if the detected current value is not consistent with the reference current value, a preset clamping device is controlled to move the electromagnet to the abnormal area. According to the electromagnet assembly, the detection efficiency of the electromagnet assembly is improved, and the manual intervention effect is reduced.

The invention relates to the technical field of special-shaped steel pipe machining, in particular to a special-shaped steel pipe welding device which comprises a welding module fixedly installed on a bottom plate, the welding module comprises a fixing frame and a power box which are fixedly installed on the bottom plate, and a second electric push rod is installed at the top of the fixing frame and fixedly connected with the top of an upper cover through a hanging rod. A rotatable upper tooth part is installed in the upper cover, a lower cover matched with the upper cover is installed on the power box, a rotatable lower tooth part with the same structure as the upper tooth part is installed on the lower cover, electromagnets used for locking the corresponding upper tooth part and the lower tooth part are installed on the upper cover and the lower cover correspondingly, and a linear moving pair is installed on the upper tooth part through a connecting block. An extension plate is installed on a sliding block of the linear moving pair, a welding machine is installed at the end, away from the sliding block, of the extension plate through an electric rotary table, and a driving motor for driving the upper tooth part and the lower tooth part is installed in the power box. The device is high in automation degree and can adapt to special-shaped steel pipes with various sections.

The invention provides a hydraulic engineering detection sampling device, and relates to the technical field of sampling devices. The device comprises a floating assembly, a main sampling assembly, an extraction assembly, a shifting assembly, a crushing assembly and an auxiliary sampling assembly, wherein the floating assembly is used for measuring the sampling depth by floating on the water surface; the main sampling assembly is arranged under the floating assembly and is used for sampling water; the main sampling assembly comprises a main shell, a fixed seat is fixedly connected to the center of the upper part of the main shell, a guide cylinder is fixedly connected to the center of the interior of the main shell, a circular electromagnet is fixedly mounted on the top wall of the guide cylinder, an extraction spring is fixedly connected to the interior of the guide cylinder, and a sampling cylinder is arranged in the main shell; and the upper part of the sampling barrel is fixedly connected with a sampling head. By arranging the main sampling assembly, the main sampling assembly is provided with a plurality of sampling barrels, a plurality of samples can be taken at a time, and the sampling efficiency is higher.

According to the implantable magnetic suspension blood pump structure, an impeller is suspended in a containing cavity of a pump shell and can rotate around the central axis of the pump shell, and blood is sucked in from an inlet and discharged from an outlet; the motor comprises a motor stator assembly arranged in the pump shell and a rotor magnet array arranged on the impeller. The magnetic suspension device comprises an electromagnet arranged in the pump shell and a suspension magnet assembly arranged on the impeller, and electromagnetic suspension force provided by the electromagnet and passive permanent magnet bias suspension force provided by the suspension magnet assembly jointly maintain suspension balance of the impeller. The motor and the magnetic suspension device are independently controlled, so that the negative influence of low signal detection accuracy caused by magnetic field coupling is effectively reduced; the hybrid magnetic suspension structure reduces power consumption of the magnetic suspension device; the arrangement positions of the motor stator assembly and the electromagnet enable the blood pump to be compact in structure and reduce the size and weight; the gap and the position of the electromagnet and the suspension magnet assembly are accurately controlled, accurate control over the suspension position of the permanent magnet is achieved, and the pumping efficiency and stability of the blood pump are improved.

The invention discloses motor stator core laminating equipment, and relates to the technical field of motor production, a plurality of electricity inlet and outlet sliding rails are fixed at the bottom end of the inner side of a fixed operation frame at equal intervals, an operation alignment frame is mounted at the top ends of the electricity inlet and outlet sliding rails through sliding rail seats, and alignment motors are symmetrically mounted at the top end of the inner side of the operation alignment frame through motor seats; an alignment limiting plate is clamped to the bottom end of an output shaft of the alignment motor, a plurality of limiting electromagnets are installed at the bottom end of the inner side of the operation alignment frame at equal intervals, processing electric push rods are fixed to the tops of the two ends of the fixed operation frame, and a processing limiting plate is fixed to one ends of the processing electric push rods; the problem that in the prior art, the size of equipment cannot be adjusted according to the diameter of the stator iron core and the size of a groove in the iron core is effectively solved, iron cores of different sizes can be produced through single equipment, the production range is widened, meanwhile, the size is corrected, stable correction cooperation is achieved through top end and side end limitation, and the production efficiency is improved. And the production quality of products is ensured.

The invention provides a magnetic polishing device for hardware parts, and belongs to the technical field of magnetic polishing equipment.The magnetic polishing device comprises a machine table, a polishing barrel and a permanent magnet disc, the polishing barrel is arranged to be a circular-tube-shaped shell with openings in the two ends, and a top cover capable of being opened and closed is arranged at the top opening end of the polishing barrel; the top cover is provided with a plurality of electromagnets which are distributed in the circumferential direction and can apply longitudinal magnetic attraction force to the horizontally-rotating magnetic needle, so that the horizontally-rotating magnetic needle flow generates longitudinal fluctuation; the top cover capable of being opened and closed is arranged above the polishing barrel, the electromagnet is arranged on the top cover, in the polishing process, the electromagnet is started, the magnetic field generated by the electromagnet is utilized, longitudinal magnetic attraction force is applied to the horizontally-rotating magnetic needle, and the horizontally-rotating magnetic needle flow can generate longitudinal fluctuation; and the magnetic needles flowing in the polishing barrel have multiple flowing directions, so that the parts can be rubbed in multiple directions, and the polishing efficiency is improved.