646 results about "Electromagnetic drive" patented technology

The invention provides a multi-angle cutting laser pipe cutting machine, and belongs to the technical field of laser cutting equipment, the multi-angle cutting laser pipe cutting machine comprises a machining module, a feeding module is arranged at one end of the machining module, a discharging module is arranged at the other end of the machining module, and the multi-angle cutting laser pipe cutting machine further comprises a cutting assembly connected with the machining module and used for cutting pipes; the device has the advantages that flexible adjustment of the position of the focus lens is achieved through cooperation of air cylinder driving and telescopic spring buffering, focus requirements of pipes with different thicknesses are met, flexible connection of a cooling channel is achieved through the telescopic pipe, continuous and stable heat dissipation of the focus lens is guaranteed, and the service life of the lens is prolonged; the electromagnetically-driven rotating cylinder drives the turbine blades to rotate to form negative-pressure airflow, an air curtain is formed at the cutting end, metal residues and dust are prevented from being diffused to the focus lens and the lens cone, a physical isolation barrier is formed through the protection sleeve, impurities are prevented from being attached to equipment parts or blocking a pipeline, long-term stable operation of equipment is guaranteed, and diffusion of the equipment to the working environment is reduced.

The invention discloses a numerical control machine tool vibration suppression self-adaptive control system and method, and relates to the technical field of intelligent vibration control, and the method comprises the steps: building a current-modal dynamic mapping relation between an electrical drive characteristic and a mechanical structure modal response based on a vibration state feature vector; real-time machine tool modal state vectors are obtained through online recursive estimation; the machine tool modal state vector is used as a boundary condition to be injected into the virtual prediction model; solving to obtain an optimal control parameter sequence and a corresponding vibration prediction result in a future time domain by taking multi-performance index collaborative optimization as a target through a rolling optimization control strategy; translating the control parameter sequence into a specific execution instruction and issuing the specific execution instruction; monitoring an execution process in real time and recording actual response data; according to the method, the accuracy of vibration prediction and the real-time performance of control response are improved by establishing the dynamic mapping relation from the electromagnetic driving characteristics of the servo main shaft and the feed motor to the dynamic response of the machine tool structure.

A chess-like piece positioning and recognition system, including: an MCU, an RFID module, multi-channel analog switches, an electromagnet and communication signal switch unit, an electromagnetic drive unit, antennas, silicon steel blocks, and pieces. The MCU is used for communication with the RFID module, selecting channels of the multi-channel analog switches, and electromagnet and communication signal switch selection. The RFID module is used for reading information from the pieces. The multi-channel analog switches are used for group gating and intra-group channel gating of the RF channels. The electromagnet and communication signal switch unit is used for switching between the electromagnetic drive unit and the RF channels. The electromagnetic drive unit is used for driving an electromagnet. The antenna is used for sending and receiving signals from the pieces and also serves as the coil for the electromagnet. The silicon steel block is used as the core of the electromagnet, which generates a magnetic attraction to the pieces after being magnetized.

The invention provides a silk fabric take-up and pay-off device, and relates to the technical field of textile machinery. The device comprises a supporting frame, a winding disc, a magnetic rotating assembly and an electromagnetic driving assembly, the winding disc and the magnetic rotating assembly are coaxially and fixedly connected to the supporting frame through a center rotating shaft, and the electromagnetic driving assembly generates an alternating magnetic field to drive the magnetic rotating assembly to rotate. According to the scheme, non-contact electromagnetic driving is adopted to replace traditional mechanical transmission, the abrasion problem caused by physical contact is avoided, the operation stability and the start-stop response speed are improved, meanwhile, vibration noise is reduced, the maintenance process is simplified, and the device is suitable for efficient winding and unwinding operation in silk fabric production.

The invention relates to the technical field of fault prediction, and particularly discloses a fault prediction method and system for a high-voltage switch operating mechanism. According to the method, early-stage accurate prediction of the fault of the high-voltage switch operating mechanism is realized through multi-feature extraction and fusion in combination with a lightweight Transformer model, and compared with a traditional single current signal analysis method, the method fully considers the coupling effect of electromagnetic and mechanical states, captures electromagnetic abnormality through current-electromagnetic coordination node features, and improves the accuracy of the fault diagnosis of the high-voltage switch operating mechanism. According to the method, mechanical vibration faults are recognized through vibration energy features, motion discordance is detected through electromagnetic driving force-motion acceleration cooperative features, so that possible fault modes of the mechanism are comprehensively covered, the accuracy and the real-time performance of evaluation are further improved through efficient fusion of the lightweight Transform model, the early fault missing report rate is effectively reduced, and the reliability of the mechanism is improved. And reliable guarantee is provided for safe operation of a power system.

The utility model provides a surface treatment polishing device for mobile toilet roof processing, which comprises a motor, a turntable, a small polishing head and a polishing piece, the output end of the motor is fixedly provided with the turntable, the outer end of the turntable is provided with a connector, and a round cavity is arranged between the connector and the turntable; an electromagnetic driver is detachably and fixedly mounted in the circular cavity, and a small polishing head is detachably and fixedly mounted on the electromagnetic driver; a polishing piece is detachably and fixedly installed on the connector, and a hole is formed in the surface of the polishing piece in a penetrating mode. The small polishing head is positioned in the hole; by means of the overall arrangement, in the using process, the surface of the roof of the mobile toilet can be polished in a large area, and concave positions and convex positions on the surface of the roof of the mobile toilet can be polished under the condition that no equipment is replaced; therefore, the polishing quality of the roof surface of the mobile toilet is guaranteed, and the whole mobile toilet is more convenient and flexible.

The invention discloses a constant-force floating grinding device based on magnetoelastic cooperative driving and a control method thereof. The constant-force floating grinding device comprises a rigid connecting assembly; the elastic guide unit is connected between the upper connecting assembly and the lower connecting assembly and comprises a plurality of groups of reset springs and guide rods which are symmetrically distributed; the electromagnetic repulsive force structure comprises a stator electromagnet and a rotor electromagnet which are coaxially and symmetrically arranged, and the polarities of the stator electromagnet and the rotor electromagnet are configured to repel each other so as to generate adjustable dynamic compensation repulsive force; the force sensor is connected to a force transmission path in series and is used for detecting grinding force; the Hall displacement sensor is used for detecting a non-contact floating air gap of the size of the air gap; the temperature sensor is embedded in a coil winding of the rotor electromagnet; and a control unit. The elastic guide unit bears most static loads, the electromagnet only needs to work in a low-power-consumption area for high-frequency fine adjustment, compared with a pure electromagnetic scheme, energy consumption is remarkably reduced, the problems of power consumption and heating are solved, and meanwhile the characteristics of fast response and high precision of electromagnetic drive are considered.

The invention discloses a linear kick rapid opening and closing control method for an isolating switch, and particularly relates to the technical field of opening and closing control of high-voltage isolating switches. Collecting a linear displacement signal between the conductive arm and the static contact and an electromagnetic driving current change curve, and constructing a kick behavior data matrix; establishing a multi-dimensional state energy threshold model based on the peak acceleration and the zero crossing point; combining a real-time current response curve to complete kick prediction trajectory fitting; fast phase torque compensation is carried out according to the current phase deviation angle, and an active suppression control pulse sequence is generated to realize kick phase locking; a damping recovery coefficient is further calculated based on aftershock feedback, an electromagnetic response factor at the moment of operation is fused, a final control instruction sequence is generated and output to a driving unit, and accurate and high-speed switching-on and switching-off operation is achieved; the method has the advantages of fast control response, strong anti-disturbance capability, high adaptability and the like, and is suitable for accurate control of the isolation switch in various complex power scenes.

The invention discloses a mechanical-electrical-sensing integrated quick-change interface and a quick-change method, and belongs to the technical field of mechanical engineering. The quick-change connector comprises a connector driving end, a connector driven end and a locking force increasing mechanism, and high locking force is achieved on the premise of miniaturization by adopting the principle that electromagnetic drive is combined with conical surface force increasing. The electrical connection and protocol conversion module integrates a tail end slave station, supports conversion of various communication protocols such as RS-485, CAN, EtherCAT and PWM, and realizes plug and play of a tail end tool; and the sensing module integrates a visual sensor and a six-dimensional force sensor and provides real-time environmental vision and force / torque feedback. Through deep integration of structure, electricity and sensing, the problems that an existing quick-change interface is complex in structure, poor in protocol compatibility and lack of autonomous sensing capacity are solved, and the flexibility, reliability and intelligent level of on-orbit fine operation of the space robot are remarkably improved.

A relay 1 comprises a first fixed contact 7,15 (figure 1), a contact arm 8 having a first movable contact 9,14, and an electromagnetic drive unit 2 having an armature 3 and a yoke 4. A connector 10 (f

The utility model relates to the technical field of valve maintenance equipment, in particular to a portable anti-explosion valve cleaning device, which is characterized in that the polarities of the opposite surfaces of two fixed magnetic field sources are the same, and a movable electromagnetic coil is arranged between the two fixed magnetic field sources; the control unit is used for periodically changing the polarity of current supplied to the movable electromagnetic coil and driving the movable electromagnetic coil to reciprocate, the plunger pump is provided with a grease inlet and a grease outlet, the grease outlet is used for being communicated with a valve to be cleaned, and the grease inlet is used for being communicated with a grease body box; according to the utility model, the electromagnetic driving mechanism is adopted to replace the existing manual driving, so that the pumping-out speed and the working efficiency of cleaning fluid or lubricating grease are improved, the maintenance operation time of a single valve is shortened, and operators are liberated from heavy repeated physical labor.

The utility model discloses bus strength stress test equipment, which comprises a detection support, a fixed processing structure and a stretching and bending structure, the fixed processing structure and the stretching and bending structure are mounted on the detection support, and relates to the technical field of bus testing, in particular to a self-adaptive clamping system. An electromagnetically driven arc extrusion block is adopted to be matched with a liftable convex block, stepless pressure adjustment is realized through magnetic force conduction, and a horizontal telescopic spring buffer mechanism is combined, so that a bus can be tightly fixed, machining impact can be absorbed, and clamping stability is ensured; multi-dimensional deformation control is achieved, a cross-shaped extrusion support is carried on a rotary extrusion circular ring pipe, 360-degree dynamic extrusion can be conducted on a bus in cooperation with four sets of concave wheels driven by electromagnetic repulsion, and precise closed-loop control over the stretching strength is achieved in cooperation with real-time monitoring of a pressure sensor.

The utility model discloses an automatic connecting device for an electrical engineering line, which relates to the technical field of electrical engineering line connection and comprises a small electrical engineering device and an inverter, a bottom plate is mounted at the bottoms of the small electrical engineering device and the inverter, a connector is mounted at the input end of a first lead, and a second lead is mounted at the output end of the first lead. A standby battery is installed on the small electrical equipment of the electrical engineering, a second wire is installed at the output end of the standby battery, an interface is installed at the output end of a third wire, a connector is matched with the interface, a supporting rod is installed on the inverter and the interface, and an electromagnetic driving mechanism is arranged on the bottom plate and the connector. According to the utility model, the electromagnet is electrified to generate magnetic force, the iron rod moves backwards in the sleeve and jacks up the electromagnetic driving mechanism, the electromagnet is not electrified to lose magnetic force, and the connector moves forwards and is inserted into the interface, so that the connection of the electricity-taking wiring harness can be automatically completed during power failure, and the normal use of small-sized electrical equipment in electrical engineering can be ensured during power failure.

The utility model discloses an electromagnetic drive carbon fiber rotor which comprises a rotor shaft, an iron core and magnetic steel, the surface of the rotor shaft is fixedly connected with a limiting spline, the iron core is composed of end plates and supporting plates, the supporting plates which are evenly distributed are fixedly connected between the two end plates, the surfaces of the end plates are provided with spline grooves, and the iron core is sleeved outside the rotor shaft through the spline grooves and the limiting spline. The outer side wall of the iron core is sleeved with magnetic steel, the outer side wall of the magnetic steel is sleeved with a sheath, the supporting plates are obliquely arranged, magnetizers are detachably connected between the supporting plates, winding grooves which are evenly distributed are formed in the surfaces of the permanent magnets, and rotor windings are wound on the inner side walls of the winding grooves; the composite magnetic conductive structure can effectively guide and optimize the distribution of a magnetic field, enhance the intensity and uniformity of the magnetic field, reduce flux leakage, reduce torque pulsation, and improve the efficiency and performance of the motor, and the lightweight design reduces the rotational inertia of the rotor, so that the motor can respond to a control signal more quickly, and the service life of the motor is prolonged. And the dynamic performance and the energy efficiency of the motor are improved.

The present application relates to the technical fields of metal pre-alloy powder manufacturing, and provides a non-ferrous metal pre-alloy powder manufacturing device, which comprises an electromagnetic drive centrifugal mold mechanism, a centrifugal atomization disc, a shell mechanism, a sealing mechanism and an electromagnetic unlocking module.The electromagnetic drive centrifugal mold mechanism comprises an electromagnetic drive module, a rotor module and a limiting portion.The rotor module is arranged in the electromagnetic drive module, and the limiting portion is connected with the rotor module.A clamping leg is fixedly arranged on the back of the centrifugal atomization disc, and the limiting portion can penetrate through the clamping leg.The shell mechanism comprises a mesh type inner shell and an outer shell, and a discharging cavity is arranged between the mesh type inner shell and the outer shell.The electromagnetic drive centrifugal mold mechanism is fixedly arranged at the bottom of the mesh type inner shell.The sealing mechanism comprises a lifting portion, a molten extrusion pipe and a rotary sealing portion.The molten extrusion pipe is fixedly connected with the rotary sealing portion, the rotary sealing portion is rotatably arranged on the surface of the lifting portion, and the rotary sealing portion is used for sealing the shell mechanism.The device has the characteristics of convenient maintenance and high powder quality.

The utility model relates to the technical field of motorcycle accessories, and discloses a locking driving mechanism and an ignition switch assembly. The locking driving mechanism comprises a bottom plate with a shaft hole, a cover body covering the bottom plate to form a mounting cavity, a motor mounted in the cavity and provided with an output shaft with an output gear, and a telescopic rod penetrating through the shaft hole and an end driving tooth surface to be in meshing transmission with the output gear. The design abandons complex electromagnetic drive, the structure is simple, and the cost is reduced. Through combination of the motor and the telescopic rod, parts are reduced, and the manufacturing process is simplified; the modular design facilitates maintenance, improves reliability, can adapt to different ignition switch assemblies, and is flexible in application.

The application discloses a voltage-limited overvoltage protection component with a recoverable electromagnetic drive tripping mechanism, which is composed of a voltage-limited overvoltage protector and an electromagnetic drive tripping mechanism. In a normal state, the normally closed contact of the electromagnetic drive tripping mechanism is in a closed state, which does not affect the normal working state of the voltage-limited overvoltage protector and the protection state under a normal intensity overvoltage. When an overvoltage occurs, a pulse current flowing through the voltage-limited pressure-sensitive resistor induces a current in the upper metal disc of the electromagnetic drive tripping mechanism, which is opposite to the direction of the spiral conductor coil of the lower electromagnetic drive disc, so that the upper metal disc of the lower electromagnetic drive mechanism induces an electromagnetic repulsive force with the lower electromagnetic drive disc, thereby causing the normally closed contact of the electromagnetic drive tripping mechanism to break, effectively inhibiting the continuous effect of a subsequent power frequency or direct current arc on the voltage-limited protector, prolonging the service life of the voltage-limited overvoltage protection component, and effectively realizing the safe use coefficient and prolonging the service life of the voltage-limited overvoltage protection component.

The application belongs to the technical field of electric control valves, and particularly relates to an electric control valve for a closed hydraulic pump. The electric control valve comprises a shell, a valve body fixedly connected in the shell, electromagnetic driving members mounted on the two sides of the shell, a first valve core slidingly connected in the valve body, second valve cores threadedly connected on the two sides of the first valve core, a third valve core threadedly connected on the side of the second valve core away from the first valve core, a driving end of the electromagnetic driving member for pushing the third valve core to move, a first flow guide ring rotationally connected with the second valve core, a support rod fixedly connected in the valve body, a feedback rod fixedly connected with the support rod, and a valve control system and a flow system arranged in the valve body. The first flow guide ring is used for guiding and dispersing the oil, so as to reduce the impact force of the oil on the edge of the second valve core, thereby reducing the probability of wear of the second valve core and ensuring the sealing between the second valve core and the valve body.

The invention provides an aircraft. The aircraft comprises a rack, a power part and a driven part, wherein the power part and the driven part are arranged on the rack; the driven part is arranged on the outer side of the power part in a surrounding mode, the power part is provided with an electromagnetic coil set, the driven part comprises a magnetic piece, and the electromagnetic coil set on the power part and the magnetic piece on the driven part interact to generate acting force so that the driven part can rotate around the power part; the driven part further comprises a plurality of fan blades, the fan blades are arranged on the inner side of the driven part in a surrounding mode, and the fan blades rotate along with the driven part and generate upward lifting force on the aircraft, so that the aircraft moves from the low position to the high position. A plurality of fan blades rotate along with a driven part and generate upward lift force to the aircraft, so that the aircraft moves from low to high, a power system of the aircraft is newly designed, the fan blades of the aircraft are driven in an electromagnetic driving mode, the limitation that power is provided by conventional fuel is eliminated, the driving mode is optimized, and the power system is more stable. And a new design direction is provided for the structural design.

Switches (100, 200) for closing and opening an electrical circuit, comprising: - a first electrical current-carrying element (109a, 209a) and a second electrical current-carrying element (109b, 209b); - a plastic insulating housing (108a, 108b, 208) that holds the first electrical current-carrying element (109a, 209a) and the second electrical current-carrying element (109b, 209b); - an electric magnetic drive; and - a first electrical contact bridge (106a, 206a) and a second electrical contact bridge (106b, 206b) which are adjustable by the magnetic drive such that they electrically connect the first current-carrying element (109a, 209a) and the second current-carrying element (109b, 209b) and exert a contact force on the first current-carrying element (109a, 209a) and the second current-carrying element (109b, 209b) respectively; wherein the first electrical current-carrying element (109a, 209a) and the second electrical current-carrying element (109b, 209b) are designed and arranged such that a force flow of the contact forces generated by the first and second contact bridge (106a, 106b, 206a, 206b) runs via the first electrical current-carrying element (109a, 209a) and the second electrical current-carrying element (109b, 209b), and the contact forces generated by the first and second contact bridge (106a, 106b, 206a, 206b) cancel each other out, wherein the first and second contact bridges (106a, 106b, 206a, 206b) are each connected to an anchor (103a, 103b, 203a, 203b) via a connecting element (105a, 105b, 205a, 205b), preferably a connecting pin; and The electric magnetic drive includes a magnetic coil (101, 201) which is configured to attract the armature (103a, 203a) connected to the first contact bridge (106a, 206a) and the armature (103b, 203b) connected to the second contact bridge (106b, 206b) in opposite directions such that the first and second contact bridges (106a, 106b, 206a, 206b) are displaced by equal deflections, and wherein the first and second contact bridge (106a, 106b, 206a, 206b) as well as the armature (103a, 203a) connected to the first contact bridge (106a, 206a) and the armature (103b, 203b) connected to the second contact bridge (106b, 206b) are arranged symmetrically to a central plane which passes through the center of the magnet coil (101, 201) and perpendicular to its coil axis.

The utility model discloses a pressure vacuum relief valve which comprises an electromagnetic driving head, a sealing cover, a valve plate and a valve body, the electromagnetic driving head is arranged at the end of the valve body, a valve port is arranged in the middle of the valve body, the valve plate is arranged in the valve port, a connector is arranged at the bottom of the valve body, and the sealing cover capable of being opened laterally is arranged on the outer side of the valve port. The top of the valve body is provided with the sealing cover which is automatically opened and closed through the electric push rod, the valve port can be sealed through the sealing cover, the valve plate which is automatically opened and closed through the electromagnetic driving head is arranged in the valve port, and the sealing effect is greatly improved through double-layer sealing of the valve plate and the sealing cover. The valve plate is arranged in the valve body, the electromagnetic driving head is arranged at the end of the valve body, intelligent control over the valve plate is facilitated through the electromagnetic driving head, and the first sealing ring is arranged on the side of the sealing cover.

The utility model discloses a swing electric toy which comprises a toy body, a swing driving assembly is arranged in the toy body, the swing driving assembly comprises a swing part rotationally connected to the interior of the toy body and a driving coil for driving the swing part, and the driving coil generates an alternating magnetic field after being electrified. The alternating magnetic field is used for driving the swing part to swing back and forth around the rotating axis; the swing piece is in transmission fit with a swing arm on the toy body, so that the swing arm swings along with swinging of the swing piece. Gear set transmission in the prior art is replaced, the problem of gear mechanical abrasion is fundamentally solved, the problems of slipping, idling or displacement caused by collision and aging of a gear set are solved, a complex gear set structure is omitted, a driving assembly is simplified, the production and maintenance cost is reduced, mechanical abrasion is reduced, and the service life of the toy is prolonged. The response speed of electromagnetic driving is higher, action connection is smooth, the mechanical hysteresis feeling of traditional gear transmission is avoided, the motion trail of the swing arm is closer to real animal actions, and the entertainment experience is improved.

The application discloses a kind of line board laser cutting device, it is related to line board processing equipment technical field.The device includes cutting machine box, workbench, lifting assembly and the positioning assembly for middle support and positioning.The positioning assembly includes electromagnetic drive matrix type positioning needle group and expansion drive assembly, positioning needle group is composed of flexible needle cannula and liftable swelling block, needle cannula is equipped with inclined wedge limiting structure, swelling block is formed radial swelling deformation by electromagnetic drive, realizes reliable insertion control locking to PCB through-hole;Uninserted hole site is supported by adhering flexible rubber socket.The structure can keep the middle part of line board stable positioning in the whole cutting process, especially after frame removal, still can avoid board displacement or warping, improve cutting precision and device versatility.

The present disclosure relates to an electromagnetic driving system for solving the clinical need for different magnetic field modes for assisting drug delivery, while the prior art is difficult to generate different magnetic field modes using one electromagnetic driving system. The present disclosure proposes a micro-robot magnetic manipulation system with an expandable spherical large working space, which adopts a modular mechanical design and can generate gradient magnetic fields, uniform magnetic fields, rotating magnetic fields, oscillating magnetic fields, and dispersed gradient magnetic fields in the spherical space, thereby facilitating the manipulation of the deformation and movement of micro-robots of any shape and quantity, and delivering drugs to the corresponding positions in the human body.

The invention belongs to the field of ultra-precision machining equipment, and particularly discloses a stress electromagnetic drive variable-rigidity fast tool servo device and a using method thereof. The device comprises an electromagnetic driver, a variable stiffness spring, a motion unit and a shell. The electromagnetic driver is composed of a fixed iron core, a magnet exciting coil and a permanent magnet, the variable stiffness spring is composed of a fixed iron core with a magnet exciting coil, and the motion unit comprises a movable iron core and a double-end guide motion shaft; the driver and the spring fixed iron core are fixed to the shell, the movable iron core is fixed to the moving shaft, a working air gap is formed between the fixed iron core and the movable iron core, and the permanent magnets are distributed around the movable iron core of the driver. Driving force and spring rigidity are changed by adjusting current; electromagnetic force drives a cutter to do reciprocating precise motion, and the system bandwidth and stroke are changed by the spring rigidity. The device breaks through the rigidity and stroke solidification limitation of traditional equipment, frequency and stroke cooperative control is achieved through electromagnetic-mechanical coupling, nanoscale precision is kept within the millimeter-scale stroke, and the dynamic response and process adaptability of complex curved surface machining are remarkably improved.

This invention relates to the field of intelligent manufacturing and concrete product production equipment control technology, specifically an intelligent control system for the entire production process of concrete poles. The system includes: a reference parameter identification unit for performing a stepped acceleration test and calculating the empty mold impedance parameter characterizing the inherent mechanical resistance of the mold; a load torque observation unit for acquiring the electromagnetic drive torque in real time and extracting the net load torque acting only on the concrete material; a rheological and distribution state analysis unit for calculating the dimensionless eccentricity factor characterizing the uniformity of material distribution; and an adaptive closed-loop control unit for generating corresponding control commands: an emergency braking command is output when the eccentricity exceeds the safety limit, a constant-speed shearing command is output when the rheological state does not meet the standard, and an adaptive acceleration command is output when the rheological state meets the standard and the eccentricity is within the safe range. This invention solves the problem of the inability to directly observe the material state within a closed mold, achieving transparent monitoring of the physical properties of concrete.

The invention discloses a bionic underwater robot based on electromagnetic drive flexible hinge jet propulsion and a motion control method of the bionic underwater robot, and belongs to the technical field of bionic actuators and robots. The multiple electromagnetic actuators arranged in a matrix mode are sequentially connected to form a hinge structure, every two vertically adjacent electromagnetic actuators are symmetrically arranged, the multiple electromagnetic actuators are all arranged on the rear side of the fairing and connected with the fairing through connecting pieces, and the multiple electromagnetic actuators are independently controlled; the comprehensive phase difference and the reversing time difference of the multiple electromagnetic actuators are controlled through the electromagnetic driving controller, differential propulsion is achieved, and flexible steering and efficient movement are achieved. The overall structure simulates the jellyfish appearance design, the appearance design conforming to the flowing resistance reduction characteristic is adopted, the resistance during movement in water can be effectively reduced, the electromagnetic driver is used for generating power, the annular flexible structure is extruded to enable a fluid medium to be rapidly sprayed out, and efficient underwater propelling of the micro-robot is achieved.

Provided are an electromagnetic drive mechanism (10) and a high-voltage direct-current relay. The electromagnetic drive mechanism (10) comprises a coil, a stationary magnetic conductive member (11), and a movable magnetic conductive member (12). The stationary magnetic conductive member (11) is fixed relative to the coil. The movable magnetic conductive member (12) is arranged opposite to the stationary magnetic conductive member (11), and the movable magnetic conductive member (12) can be magnetized when the coil is energized, so as to move toward the stationary magnetic conductive member (11). The movable magnetic conductive member (12) comprises a movable core body (122) and an expansion portion (123) that are separately arranged and connected to each other, wherein the expansion portion (123) is arranged at the end of the movable core body (122) facing the stationary magnetic conductive member (11) and arranged circumferentially around the movable core body (122).

The invention discloses a drop-out fuse field maintenance self-opening system based on infrared control, and belongs to the technical field of electrical equipment maintenance assistance. According to the method, an infrared receiving module, an instruction verification unit and a local control link are integrated, a worker sends an opening instruction through an infrared remote controller on site, a fuse electromagnetic driving mechanism is triggered to execute opening operation, and the problems that in traditional manual falling operation, equipment needs to be in close contact, safety is low, and operation difficulty is large are solved. The infrared instruction response time is less than or equal to 20ms, the opening operation success rate is greater than or equal to 99%, fuse opening can be rapidly realized in an electrified or power-off maintenance scene, and the safety and efficiency of field maintenance are remarkably improved.

The utility model discloses a waterproof high breaking direct current contactor, which comprises a shell, and a contact system and an electromagnetic driving mechanism which are arranged in the shell, the contact system comprises a static contact and a moving contact, an opening and closing gap is formed between the static contact and the moving contact, and the electromagnetic driving mechanism drives the moving contact to be close to and far away from the static contact; the shell comprises a bottom shell, a middle shell and an upper cover which are sequentially connected from bottom to top, sealing gaskets are arranged at the joint of the bottom shell and the middle shell and the joint of the middle shell and the upper cover, the electromagnetic driving mechanism is installed in the bottom shell, a contact chamber is arranged between the middle shell and the upper cover, the contact system is located in the contact chamber, and a magnet is fixed to the side portion of an opening and closing gap in the contact chamber; through the arrangement of the sealing gasket and the magnet, the sealing waterproof performance of the DC contactor can be improved, arc extinguishing can be accelerated, the breaking capacity can be enhanced, and the product performance can be improved.