31results about How to "Improve magnetic utilization" patented technology

The invention discloses a flat linear vibration motor. The flat linear vibration motor comprises a shell internally equipped with accommodating space, a vibration unit accommodated in the accommodating space and suspended in the shell, and a sliding pair arranged between the vibration unit and the shell; the vibration motor further comprises an annular drive coil which is annularly arranged on the periphery of the vibration unit and used for driving the vibration unit to circularly vibrate along the vibration direction, and the driving coil drives the vibration unit to circularly vibrate along the vibration direction of the vibration unit after being electrified. The flat linear vibration motor is characterized in that restoring force is provided by repulsive force relatively generated by the same poles of the magnetic steel, the vibration unit is positioned by the sliding pair, and the drive coil is configured into a ring shape and annularly arranged on the periphery of the magnetic steel to improve the magnetic utilization rate, so that performance and service life of the motor cannot be affected when spring parts of a traditional motor are ineffective and fatigue, and the performance of the vibration motor is effectively increased.

The invention discloses a magnetic refrigeration cooling device and control system which comprises a magnetic refrigeration system, a cooling system and a driving control system. The magnetic refrigeration system comprises a magnetic field system, a magnetic working medium device, a refrigeration end and a heating end, a magnetic working medium is placed into the magnetic field system, the magnetic torque of the magnetic working medium is neat or disordered along with change of a magnetic field direction, the cooling system comprises a pump, a disk seamless cooling pipeline, a disk seamless heat absorption pipeline, a draft tube and cooling liquid, and the cooling liquid circulates in the pipeline in a reciprocating manner under driving of the pump. By the aid of a single-chip microcomputer in the adaptive on-off driving control system for an intelligent temperature control switch, on one hand, periodic change of the magnetic field system is controlled, on the other hand, the pump is controlled to drive the cooling liquid to periodically and circularly flow, the cooling efficiency of the system is higher than that of a traditional single cooling system by the aid of magnetic refrigeration technology, magnetic leakage can be effectively decreased, a cooled part can be intelligently cooled, energy is saved, environments are protected, pollution is avoided, and noise is quite low.

The invention relates to a permanent magnet linear motor and a flexible cavity compressor. The permanent magnet linear motor includes a stator and a mover. The mover is a permanent magnet radiation ring mover. The ring mover includes a transmission shaft and a ring-shaped permanent magnet, the ring-shaped permanent magnet is a permanent magnet closed loop integrally formed and magnetized by radiation, the stator includes a silicon steel outer ring formed by overlapping multi-layer silicon steel sheets and a radial direction formed by the inner surface of the silicon steel outer ring A plurality of extended inner silicon steel sheets, coil windings are wound on each inner silicon steel sheet, and the coil windings on the plurality of inner silicon steel sheets of each stator are sequentially wound by a copper wire. The above-mentioned motor adopts an integrally formed permanent magnet radiation ring mover, which has a simple and compact structure, energy saving and environmental protection. Moreover, the permanent magnet radiation ring is a closed-loop structure, which prevents magnetic flux leakage and improves the power and efficiency of the motor. The coils of the stator do not affect each other, without interference or overlap, which improves the power of the motor.

The invention discloses an electromagnetic heating roller used for a corrugating machine, an application of the electromagnetic heating roller and a corrugating machine electromagnetic heating method, and belongs to the technical field of electromagnetic heating. The electromagnetic heating roller comprises a roller body and an electromagnetic heater. The electromagnetic heater is used for heating the roller body. The roller body is provided with a cavity for encapsulating heat-conducting liquid. The electromagnetic heater can heat the heat-conducting liquid through the roller body, so that steam is produced in the cavity of the roller body. The electromagnetic heater comprises a plurality of U-shaped magnets and an electromagnetic wire. The multiple U-shaped magnets are arranged on a straight line side by side in the axis direction of the roller body. The electromagnetic wire is wound at the two ends of the U-shaped magnets in a single-loop wire winding mode to form a coil. Corrugated paper can be uniformly heated through the electromagnetic heating roller, moisture balance of the corrugated paper in the whole width direction is ensured, and the product quality is improved.

The invention provides a high-acceleration high-stability high-temperature superconducting maglev vehicle system. The system comprises a train system and a rail system, wherein the train system comprises a train body, an electric brush arranged on the train body, a low-temperature refrigeration container arranged at the bottom of the train body, multiple columns of high-temperature superconductingcoils arranged in the low-temperature refrigeration container and a refrigeration system used for cooling the multiple columns of high-temperature superconducting coils, the rail system comprises a rail main body, a plurality of columns of power coils and a plurality of columns of suspension guide coils, in the direction perpendicular to the advancing direction of the vehicle body, the multiple columns of high-temperature superconducting coils, the multiple columns of power coils and the multiple columns of suspension guide coils are all symmetrical about the central axis of the vehicle body,the power coils and the high-temperature superconducting coils are arranged in a staggered mode, and the multiple columns of suspension guide coils are distributed on two sides of the multiple columns of high-temperature superconducting coils. The superconducting maglev train system with the structure is advantaged in that the utilization rate of a magnetic field and the power density of the motor can be effectively improved, and the train can have high stability under ultra-high-speed operation.

The invention relates to an electrical machine (1, 2, 210) or its use as a wind power generator and a wind power installation having this electrical machine. The electrical machine has a primary part (3, 4, 222, 212, 213) and a secondary part (5, 6, 224), wherein a disc-like primary part (3, 4, 222, 212, 213) and a disc-like secondary part (5, 6, 224) are provided for forming a disc-shaped air gap, or wherein the electrical machine (1, 2, 210) has a cylindrical primary part (3, 4, 212, 213) and a cylindrical secondary part (5, 6, 224) for forming a cylindrical air gap, wherein a primary part, which can be used for a linear motor, is also used for forming the cylindrical primary part (3, 4, 222, 212, 213).

The invention discloses a magnetic latching relay of a directly-operated type magnetic circuit structure. The magnetic latching relay comprises a magnetic circuit part, a contacting part and a pushing part. The magnetic circuit part comprises a coil, an iron core, an inner yoke, an outer yoke, two permanent magnets and two pole pieces. The inner yoke and the outer yoke are of an opening-shaped structure respectively. The iron core is arranged in the coil. The coil is arranged in the inner yoke in a sleeved mode. The outer yoke is arranged outside the inner yoke in a sleeved mode. The two pole pieces are arranged between the inner yoke and the outer yoke respectively. Movable gaps are arranged between the pole pieces, the inner yoke and the outer yoke. The two ends of the iron core penetrate out of the inner yoke respectively and are fixed with the corresponding pole pieces. The two permanent magnets are symmetrically arranged between the inner yoke and the outer yoke with the iron core as an axis respectively. The two faces of each permanent magnet are attached with the inner yoke and the outer yoke respectively. According to the magnetic latching relay, large driving power can be formed during relay coil electrifying, large retention force can be formed during relay coil outage, the magnetic latching relay has the advantages that magnetic disturbance resisting capacity is enhanced, product size is reduced, and cost is lowered.

The invention discloses a magnetic adsorption wall-climbing spraying robot with curved surface adaptability and a using method thereof. The magnetic adsorption wall-climbing spraying robot comprises a main vehicle body, an independent spring suspension structure, a lifting lead screw, magnetic adsorption wheels, a motor fixing device, a spraying mechanical arm and a control box cover. The wall-climbing robot walks in a wheel type adsorption mode, movement is more flexible, the adsorption force is larger due to the fact that the large-radius wheels are internally provided with the magnetic wheels, and walking is more stable. The robot adopts an independent suspension structure, the weight is light, the obstacle crossing capacity and the damping capacity are high, and the structure is easy to machine and convenient to disassemble. A lifting lead screw is arranged below the spring suspension for adjustment, and the lifting lead screw is connected with a hexagonal structure hinged to a rod piece, so that the four magnetic wheels of the wall-climbing robot can walk perpendicular to the curved surface and the tangent plane no matter what posture the robot is in. In addtion, the magnetic adsorption wheel is perpendicular to the tangent plane of the curved surface, so that the magnetic utilization rate of the magnetic wheel is the highest, and the magnetic adsorption force to the wall surface is also the maximum. Therefore, the robot body can be firmly adsorbed on the wall surface, and the spraying work of the robot is completed.

The invention discloses a superconducting induction heating device capable of simultaneously heating multiple workpieces. The superconducting induction heating device comprises a magnetic conductive iron core, a superconducting coil and iron yokes, wherein the superconducting coil surrounds the magnetic conductive iron core. The magnetic conductive iron core is a columnar iron core, an upper magnetic conductive plate is arranged at an upper end of the magnetic conductive iron core, and a lower magnetic conductive plate is arranged at a lower end of the magnetic conductive iron core; the superconducting coil is connected with an external power supply through a current lead so that the superconducting coil bears a current to generate a magnetic field; each uniform iron yoke is connected withthe upper magnetic conductive plate and the lower magnetic conductive plate, an air gap is arranged in each iron yoke, and the air gaps are used for placing workpieces to be heated; and after the workpieces to be heated are placed in the air gaps, the magnetic conductive iron core conducts the magnetic field generated by the superconducting coil to the multiple iron yokes connected in parallel soas to form multiple series-parallel connection mixed magnetic circuits. The device provided in the invention can heat the plurality of workpieces to be heated at the same time, heating efficiency ofthe workpieces to be heated is improved, and the device has a better adjusting function corresponding to a heating process and power through the mixed magnetic circuits.

The present invention discloses a taper magnetic bearing switch reluctance motor and a control method thereof. The motor is formed by one switch reluctance motor and two taper magnetic bearings; a taper stator is formed by 4 E-shaped structures, the central tooth of each E-shaped structure is winded with a vertical suspension winding, is winded at, each of other two teeth are respectively winded with an axial direction suspension winding, the vertical suspension windings and the axial direction suspension windings are connected in series to form a set of the axial direction suspension winding; an armature winding crosses the two taper stators and a reluctance motor stator to form 3-phase armature winding; rotation control is the same as a traditional switch reluctance motor control mode, and bias flux is generated for suspension; and five suspension forces are associated with the 3-phase armature winding current, current of 4 vertical suspension windings and current of 2 vertical suspension windings; the two vertical suspension windings can optimize the bias flux to allow the generated bias flux to be equal when the 3-phase armature winding performs individual excitation so as to solve the problem that the vertical suspension force output is unbalance. The motor system is high in integration degree and high in current utilization rate and realizes decoupling between the torque and the suspension force.

The invention relates to the technical field of relays, in particular to a solenoid straight-through type relay, which comprises a base, and a magnetic circuit component, a contact component and a pushing card which are arranged on the base, wherein the magnetic circuit component controls contact or separation of the contacts of the contact component through the pushing card, the magnetic circuit component comprises a coil holder and an iron core, the coil holder is provided with a through hole in the contact and separation direction of the contacts for one end of the pushing card to enter, a coil is wound outside the coil holder to form a magnetic control loop, the iron core and the pushing card are connected to form an iron core component, theiron core componentcan linearly move in the coil holder, the iron core component is matched with the coil holder through hole to form a circumferential anti-rotation structure, the iron core is sheet-shaped, and one side of the iron core in the thickness direction and one side of the pushing card are provided with at least one connecting position, so that the side surface of the iron core is matched with the side surface of the pushing card, and the iron core drives the pushing card to move back and forth. According to the invention, the iron core is low in machining difficulty, the assembling process of the iron core and the pushing card is simpler, more convenient and faster, and the stability of linear motion of the whole formed iron core component in the coil holder is guaranteed.

The present application discloses a hybrid magnetic circuit superconducting induction heating device, which includes: a magnetic core, a superconducting coil arranged around the magnetic core, and a plurality of parallel iron yokes distributed around the circumferential direction of the magnetic core. The upper end is provided with an upper magnetic plate, and the lower end of the magnetic core is provided with a lower magnetic plate; the superconducting coil is connected to an external power supply through a current lead so that the superconducting coil can carry a current, thereby generating a magnetic field; the upper end surface of each iron yoke / There is a first air gap for placing the workpiece to be heated between the lower end surface and the side wall of the upper magnetic permeable plate / lower magnetic permeable plate; after the workpiece to be heated is placed in the first air gap, the permeable core converts the superconducting coil to The magnetic field is conducted to multiple parallel iron yokes to form multiple series-parallel hybrid magnetic circuits. The device provided by the application can simultaneously heat multiple workpieces to be heated, and increase the heating efficiency of the workpieces to be heated, and the hybrid magnetic circuit enables the device to have a better adjustment function corresponding to the heating process and power.

The invention provides a high-thrust high-temperature superconducting linear motor. The linear motor comprises a rotor part and a stator part, wherein the rotor part comprises a low-temperature refrigeration container, multiple columns of high-temperature superconducting coils arranged in the low-temperature refrigeration container and a refrigeration system for cooling the multiple columns of high-temperature superconducting coils, the stator part comprises a track main body, a plurality of columns of power coils and a plurality of columns of suspension guide coils, the rotor part moves in adirection vertical to the moving direction of the rotor part, the multiple columns of high-temperature superconducting coils, the multiple columns of power coils and the multiple columns of suspensionguide coils are all symmetrical about the central axis of the rotor part, a column of power coils are arranged between every two adjacent columns of high-temperature superconducting coils, a column of high-temperature superconducting coils are arranged between every two adjacent columns of power coils, and the multiple columns of suspension guide coils are distributed on two sides of the multiplecolumns of high-temperature superconducting coils. The linear motor is advantaged in that a maglev train using the superconducting linear motor can improve the utilization rate of a magnetic field, obtain greater thrust and stability, and enable the train to have the higher running speed.

The invention relates to a synchronous motor double-layer rotor structure comprising an inner stator, an outer stator and a double-layer rotor. The double-layer rotor comprisesinner-layer permanent magnets,outer-layer permanent magnets, a magnetic isolating material andwedge-shaped magnetic conductive structures. The double-layer rotor is mounted between the inner stator and the outer stator. Themagnetic isolating material is set between the inner-layer permanent magnet and the outer-layer permanent magnet. The inner-layer permanent magnet and the outer-layer permanent magnet both adoptHalbach arrays. Each wedge-shaped magnetic conductive structure is set between everytwo adjacent outer-layer permanent magnetsof the double-layer rotor. A gap is reserved between every two adjacent inner-layer permanent magnets of the double-layer rotor. Inner and outer layers of the double-layer rotor both adoptHalbach permanent magnet arrays. Magnetic flux density formed by the permanent magnets is centralized to oneside of an air gap, so output torque of a motor is improved. Through setting of the wedge-shaped magnetic conductive structures among the outer-layer permanent magnets, magnetic induction lines of the permanent magnet are prompted to form a loop at an outer air gap, so the magnetic induction lines pass through the outer air gap to the greatest extent, and a magnetic utilization rate is improved. Through reservation of the gap between the two adjacent pieces of inner-layer permanent magnet, a heat dissipation condition of the permanent magnet can be improved.

The disclosure provides a high-acceleration, high-stability high-temperature superconducting maglev vehicle system, including a train system and a track system. The train system includes a car body, a brush arranged on the car body, a low-temperature refrigeration container arranged at the bottom of the car body, Multiple rows of high-temperature superconducting coils and a refrigeration system for cooling multiple rows of high-temperature superconducting coils arranged in a low-temperature refrigeration container; the track system includes a track body, multiple rows of power coils, and multiple rows of suspension guide coils; traveling perpendicular to the car body In the direction of , the multi-row high-temperature superconducting coils, multi-row power coils and multi-row suspension steering coils are all symmetrical to the central axis of the car body, and the power coils and high-temperature superconducting coils are arranged alternately with each other, and the multi-row suspension steering coils are distributed in multiple Columns on both sides of the HTS coils. The disclosed superconducting maglev train system with the above structure can effectively improve the utilization rate of the magnetic field and the power density of the motor, and the train can have higher stability under ultra-high-speed operation.

The invention discloses a hybrid magnetic circuit superconducting induction heating device based on a split iron core. The device comprises a magnetic conductive iron core, a superconducting coil arranged around the magnetic conductive iron core and a plurality of parallel iron yokes circumferentially distributed around the magnetic conductive iron core. The magnetic conductive iron core is composed of a plurality of sub iron cores formed by longitudinally cutting a columnar iron core; an upper concentrating flux plate is correspondingly arranged at an upper end of each sub iron core, and a lower concentrating flux plate is correspondingly arranged at a lower end of each sub iron core; the number of the iron yokes is equal to that of the sub iron cores, each iron yoke corresponds to one sub iron core, a first air gap is formed between an upper end face / lower end face of each iron yoke and a side wall of the upper concentrating flux plate of the upper end or a lower concentrating flux plate of the lower end of the corresponding sub iron core, and the first air gaps are used for containing workpieces to be machined. A to-be-heated workpiece can rotate under the action of external force to generate induced current to heat the to-be-machined workpiece. The hybrid magnetic circuit superconducting induction heating device based on the split type iron core is provided with the independent anti-interference magnetic circuit, and therefore, the better heating adjusting characteristic is achieved.

Disclosed are an arc extinction magnetic circuit having misaligned magnetic steel and a direct-current relay thereof. The arc extinction magnetic circuit comprises a contact portion. The contact portion comprises two stationary contacts respectively for providing current inflow and outflow and a movable contact spring. Two ends of the movable contact spring respectively cooperate with the two stationary contacts. Each of the outer sides of the two ends in the length direction of the movable contact spring is respectively provided with a piece of first magnetic steel. Each of the outer sides of the two ends in the width direction of the movable contact spring is respectively provided with a piece of second magnetic steel, and the two pieces of second magnetic steel are misaligned. The two pieces of first magnetic steel face each other with opposite poles, and the two pieces of second magnetic steel also face each other with opposite poles. In the present invention, two pieces of magnetic steel in the middle in the length direction of the movable contact spring are misaligned, the distance between the two adjacent pieces of magnetic steel is reduced, the strength of a magnetic field between the two adjacent pieces of magnetic steel is then enhanced, thereby greatly enhancing the strength of an arc extinction magnetic field and the strength of the magnetic field which provides ampere force for the movable spring, and substantially increasing the magnetic utilization rate of the magnetic steel.

The invention discloses a magnetic conductive pad for a magnetic template. The magnetic conductive pad for the magnetic template comprises a magnetic conductive body matched with the magnetic templatein the longitudinal length direction, and the transverse section of the magnetic conductive body is shaped like a Chinese character 'tu'; the portions, corresponding to all resin layers of the magnetic template, of the magnetic conductive body are provided with through holes in the transverse direction, the through holes vertically penetrate through the magnetic conductive body, the two sides ofthe through holes are provided with hole walls, a non-magnetic conductive material is poured into the through holes, and a non-magnetic conductive body is formed after the non-magnetic conductive material is completely hardened; and the outer surface of the non-magnetic conductive body is flush with the outer surface of the magnetic conductive body, the non-magnetic conductive body and the magnetic conductive body are integrated to form the magnetic conductive pad, the narrow upper surface of the magnetic conductive pad serves as a workpiece installing surface, the wide low surface of the magnetic conductive pad serves as a magnetic template contact surface, and the magnetic conductive portions of the magnetic conductive pad correspond to magnetic poles of the magnetic template. The magnetic conductive pad for the magnetic template has the advantages that guide rail machining is convenient when the magnetic conductive pad is used, and the magnetic template can be well protected by themagnetic conductive pad.

The invention discloses a controller applied to a power converter and an operating method thereof. The controller comprises a control signal generating circuit and a grid control signal generating circuit, wherein the control signal generating circuit is used for generating a control signal when the input voltage inputted into the power converter is greater than a predetermined voltage; and the grid control signal generating circuit is coupled to the control signal generating circuit, the grid control signal generating circuit generates a grid control signal corresponding to a continuous conduction mode of the power converter to a power switch of the power converter when the grid control signal generating circuit receives the control signal, and the power switch is turned on or off according to the grid control signal. Compared with the prior art, the controller has the advantages that the magnetic utilization ratio of an inductor of the power converter is increased, the power factor correction efficiency of the power converter is improved, and that the output power of the power converter is increased.

Disclosed are an arc extinction magnetic circuit resisting / matching electro-dynamic repulsion force and a DC relay thereof. The arc extinction magnetic circuit comprises stationary contacts and a movable contact spring matching one another. The outer sides of two ends in the length direction of the movable contact spring are respectively provided with a piece of first magnetic steel. The outer sides of two ends in the width direction of the movable contact spring are respectively provided with a piece of second magnetic steel, wherein the two pieces of first magnetic steel face each other with opposite poles, and the two pieces of second magnetic steel also face each other with opposite poles. The arc extinction magnetic circuit further comprises two yoke iron clamps respectively connected between the corresponding first and second magnetic steel. The poles, facing the movable contact spring, of the corresponding first and second magnetic steel are opposite. According to the present invention, magnetic steel with specific magnetism is disposed on the periphery of a contact portion, yoke iron clamps are additionally disposed between two sets of adjacent magnetic steel, and the magnetic flux of the magnetic steel is enabled to mainly go towards the yoke iron clamps to form main magnetic flux, such that the strength of an arc extinction magnetic field and the strength of a magnetic field which provides ampere power for a movable spring are greatly enhanced, and the magnetic utilization rate of the magnetic steel is greatly improved.

According to the back-to-back multiple excitation hybrid generator based on homodromous electromagnetic pole coupling, the electric excitation part and the permanent magnet power generation parts are arranged back to back, and the permanent magnet power generation parts are symmetrically arranged at the two ends of the electric excitation part, so that the structures of the electric excitation part and the permanent magnet power generation parts and the overall layout of the electric excitation part and the permanent magnet power generation parts are optimized; the magnetic efficiency and the magnetic utilization rate of electric excitation are improved, and the characteristics of high power density and excellent electric output characteristic are realized; and meanwhile, in cooperation with related power electronic means, the system cost can be greatly reduced, the overall efficiency is improved, the system is more suitable for being applied to related occasions such as aerospace, and the applicability of the structure is improved.

The invention discloses a rotor iron core for a brushless electric machine and belongs to the field of fans.The rotor iron core solves the problem that in the prior art, the magnetic flux leakage phenomenon of a rotor of an electric machine is serious.The rotor iron core for the brushless electric machine comprises a rotor body, the rotor body comprises a magnetism insulating bracket provided with a shaft hole, the periphery of the magnetism insulating bracket is provided with a plurality of iron cores at intervals, and a mounting groove for mounting a corresponding magnet is formed between every two adjacent iron cores.

The invention provides an efficient surface mounting type permanent magnet synchronous motor structure with a cooling structure, and belongs to the technical field of motor structures. The motor adopts an inner rotor structure; a stator tooth is added with three equidistant virtual grooves; and the magnetic poles of the rotor is internally added with permanent magnet bridges; and grooves are formed below the magnetic poles. The technical key point is that the lowest frequency of cogging torque harmonic wave can be reduced through adding the virtual grooves on the stator tooth, so that the cogging torque amplitude is reduced; through adding the permanent magnet bridges in the rotor, the leakage flux between the magnetic poles can be effectively decreased, the gap flux density can be increased, the gap harmonic wave can be decreased, the fundamental wave content can be increased, gap waveforms with relatively good sine can be obtained, the harmonic wave distortion rate can be improved, remarkable effect is brought to restrict matrix pulsation, and higher stability is provided; and through forming the grooves below the permanent magnets to add water cooling channels, the permanent magnets on the rotor can be effectively prevented from too high temperature, and the closed magnetic circuits between the magnetic poles can be effectively decreased, so that the magnetic utilization rate is effectively improved.

The application discloses a hybrid magnetic circuit superconducting induction heating device based on a split iron core, which includes a permeable core, a superconducting coil arranged around the permeable core, and a plurality of parallel iron yokes distributed circumferentially around the permeable core , the magnetically permeable core is composed of a plurality of sub-cores cut along the longitudinal direction of the cylindrical iron core; The number of iron yokes is equal to the number of divided iron cores, each iron yoke corresponds to a divided iron core, and the upper end surface / lower end surface of each iron yoke is connected to the upper magnetic conductive plate at the upper end of the corresponding divided iron core / lower end of the lower end There is a first air gap between the side walls of the magnetic conductive plate, and the first air gap is used to place the workpiece to be processed; the workpiece to be heated can rotate under the action of an external force to generate an induced current to heat the workpiece to be processed. The hybrid magnetic circuit superconducting induction heating device based on the split iron core provided by the present application has an independent anti-interference magnetic circuit and thus has better heating regulation characteristics.

The invention provides an armature assembly and a 1 / 2 crystal cover magnetic latching relay with the armature assembly. The armature assembly comprises two armatures, two pieces of magnetic steel, twopressing shaft pieces and a connecting shaft, wherein the two armatures are arranged in a front-back symmetrical mode, the two pieces of magnetic steel are arranged between the two armatures and distributed in a left-right spaced mode, and the two pole faces of the magnetic steel are tightly attached to the surfaces of the two armatures respectively; the two pressing shaft pieces are arranged onthe upper sides and the lower sides of the armatures respectively and fixedly connected with the two armatures; and the connecting shaft is arranged between the two pieces of magnetic steel, and the two ends of the connecting shaft penetrate through the two pressing shaft pieces respectively. The armature assembly forms a bridge-type double-armature structure and comprises two working air gaps, sothat the initial suction force of a magnetic circuit system of the relay is effectively improved, and the relay has good dynamic characteristics. Meanwhile, the structure has good symmetry, and the environmental resistance of the relay is effectively improved; and the problem that the retention force of the relay is asymmetric in self-holding and resetting states is solved, and the relay correction efficiency is effectively improved.