21results about How to "Increase electromagnetic force" patented technology

The magnetic suspension motor comprises annular rotors and a stator assembly, the two annular rotors are coaxial and arranged in the vertical direction, the number of magnetic poles of the two annular rotors is the same, the arrangement directions of the magnetic poles of the two annular rotors are the same or opposite, and the relative positions of the two annular rotors are fixed; the two annular rotors are arranged on the outer side of the stator assembly in a sleeving mode, and the stator assembly drives the two annular rotors to suspend and rotate through magnetic force. The axial driving assembly can provide additional axial force for the rotating cylinder, and after the rotating cylinder axially deviates, the rotating cylinder is driven to return to the normal position; the stator assembly is isolated from the outside by the mounting cavity, and the annular rotor is isolated from the outside by the rotating cylinder, so that external media are prevented from being polluted, and the stator assembly and the annular rotor are also prevented from being corroded by the external media.

The invention discloses a circuit breaker, and relates to the technical field of low-voltage electrical appliances, and the circuit breaker comprises a housing, an operation mechanism, a contact assembly, and an arc isolation module. The operating mechanism is installed on the shell, and a contact support of the operating mechanism is rotationally connected to the inner wall of the shell. The contact assembly comprises a moving contact and a static contact, the moving contact is rotationally connected to the shell, the moving contact is movably connected with the contact support, and the rotating central axis of the moving contact and the rotating central axis of the contact support are arranged at intervals, so that the opening distance between the moving contact and the static contact is increased. The arc isolation module is installed on the shell, the arc isolation module can isolate electric arcs generated in the breaking process of the circuit breaker, the arc isolation module is provided with an arc isolation cavity, a static contact point of the static contact is located in the arc isolation cavity, and a moving track of a moving contact point in the moving contact is located in the arc isolation cavity. According to the invention, the breaking performance and the arc extinguishing performance of the circuit breaker are higher.

An electromagnetic loading device for generating large displacement and a test method thereof, wherein an active coil and a sleeve are mounted on a central rod, and the inner circumferential surface of the sleeve is slidably matched with the outer circumferential surface of the central rod. A secondary coil is mounted on the sleeve, and the secondary coil and the sleeve are interference matched. A magnetic yoke made of soft magnetic material is designed outside the active coil and the secondary coil to constrain the magnetic lines of force of the pulse magnetic field generated by the active coil and the secondary coil under pulse excitation to diverge outward, so that the magnetic lines of force are concentrated around the coil, thereby increasing the electromagnetic force without increasing the capacitance size and initial voltage of the active coil charging and discharging circuit. According to numerical simulation, when the maximum voltage and capacitance are limited, the main force-bearing components of the loading device are always in the elastic stage of the secondary coil, the loading rod and the pad during the loading process, so that the entire loading device can be reused and the test repeatability is good.

The invention discloses an arc extinction device and method based on an enhanced special linear motor, and belongs to the field of pulse power technology and application, a resistance-inductive element is bridged to the bore openings of two main rails, so that the main rails with the original open bore openings are electrically connected through the resistance-inductive element; before the armature goes out of the chamber, the resistive and inductive element and the main rail at the front end of the armature operate as a parallel branch of the armature in the circuit topology, and after the armature goes out of the chamber, the resistive and inductive element operates as a series branch between the two main rails in the circuit topology; according to the arc extinguishing method, the operation characteristics of the enhanced special linear motor are combined, the pivot rail current at the moment of out-of-chamber can be remarkably reduced or even eliminated, flash, sound and impact caused by chamber opening electric arcs are greatly reduced, and under the same operation working condition, the device concealment, safety, service life and other performance are remarkably improved.

The invention relates to the field of chargers, in particular to a novel charger plug which comprises a shell, plug pins are symmetrically and fixedly connected to the side portions of the shell, circuit boards are symmetrically and fixedly installed in the shell, first cavities are symmetrically formed in the side walls of the two sides of the shell, and second cavities are symmetrically formed in the top wall and the bottom wall of the shell. And an auxiliary assembly is fixedly installed in each second cavity, first groove bodies are symmetrically formed in the side walls of the two sides of the shell, a communicating cavity is formed between each first cavity and the adjacent second cavity, and a warning assembly is fixedly installed in each first groove body. Through the arrangement of the pop-up assembly, after charging is completed and when a data line is pulled out, the charger plug is automatically popped off from the socket, aging of the charger is slowed down, the service life is prolonged, when the charger plug is short-circuited, the charger plug is automatically popped up at the first time, the situation that the charger plug is still on the socket after short-circuit and causes a fire disaster is avoided, and the safety effect is improved.

The application discloses a non-magnetic ring proportional pressure reducing electromagnetic valve for a hydraulic system, a first through hole, a second through hole and a first blind hole are formed in the valve body, a pressure relief hole and a pressure inlet hole are formed in the side wall of the valve body, the pressure relief hole and the pressure inlet hole are communicated with the first through hole, a working hole is radially formed in the side wall of the valve body, the inner end of the working hole is communicated with the first through hole, and the outer end extends to the outer surface of the valve body, a valve core is axially movably installed in the first through hole, and a fifth outer groove and a first annular protrusion are arranged on the outer periphery of the valve core, the first annular protrusion forms an annular gap with the inner wall of the first through hole, a coil assembly is arranged in the yoke, a stop iron is fixedly arranged in the yoke through a mounting plate, and a magnetic circuit optimization structure is arranged on the outer surface of the stop iron. The magnetic circuit optimization and the multiple anti-sticking and friction-reducing designs are integrated, the independent magnetic ring is cancelled, the structure is simplified, the electromagnetic force, the response speed and the service life of the electromagnetic valve are comprehensively improved, the processing difficulty is obviously reduced, and the application range of the electromagnetic valve is widened.

The electromagnetic brake comprises a brake disc, an armature, a stator, an electromagnetic coil and a compressed spring, the stator is provided with a stator inner cavity, a stator protruding column protruding towards the direction close to the armature is arranged in the middle of the cavity wall of one side of the stator inner cavity, and the stator protruding column is provided with a protruding column through hole. The electromagnetic coil is arranged in the stator inner cavity and sleeved on the stator protruding column, the compression spring is sleeved outside the stator protruding column and located in a central through hole of the electromagnetic coil, an armature protruding ring is arranged in the middle of the surface of one side of the armature, part or all of the armature protruding ring is arranged in the protruding column through hole, and the armature and the brake disc are both located in the stator inner cavity. The electromagnetic force of the electromagnetic coil to the armature is increased on the premise that the volumes of the electromagnetic coil and the brake are not increased, the requirements of small volume and large magnetic force can be met at the same time, enough distance between the armature and the stator can be ensured, the armature and the brake disc can be thoroughly separated when the brake is released, and the service life of the brake is prolonged. And friction noise between the brake disc and the armature is eliminated.

The application discloses a small-sized circuit breaker clapping type electromagnetic system with high magnetic efficiency, which comprises a magnetic yoke, and a armature is arranged above the magnetic yoke; the armature comprises a shaft pin part and a magnetic concentration part, and a recess part is further arranged on the magnetic concentration part; wherein the recess part is recessed towards the magnetic yoke. In summary, without reducing the magnetic increase of the magnetic yoke to the static contact rod, the recess part is arranged in the normal working air gap path of the armature, the distance from the current conductor is reduced, the electromagnetic force is larger and more concentrated in the working air gap, the magnetic path surface is larger, the suction is sufficient under low current (such as 32A and below), the action is sensitive, the magnetic flux leakage is minimum, and the large current working condition is considered.

The utility model discloses a three-way pipe clamping electromagnetic valve which comprises a top cover, a valve body connected to the top cover and a bottom cover connected to the valve body, and the lower half portion of the outer side of the valve body is sleeved with a coil assembly. An adjusting rod is arranged at one end of the valve body, and a pull rod assembly is arranged at the other end of the valve body. The pull rod assembly comprises a spring, a rod body connected to the spring and a clamping block arranged on the rod body, one end of the spring is located in the valve body and abuts against the adjusting rod, and the rod body is slidably connected into the valve body; the three-way assembly is arranged in the valve body and comprises a Y-shaped three-way hose, a first opening of the Y-shaped three-way hose is defined as an inlet pipeline, a second opening of the Y-shaped three-way hose is defined as an outlet A pipeline, a third opening of the Y-shaped three-way hose is defined as an outlet B pipeline, and the clamping block is located between the outlet A pipeline and the outlet B pipeline; according to the electromagnetic valve, the three-way pipe can be switched by adopting a spring system, and meanwhile, the problem of large residual fluid in the three-way pipe is solved by adopting the Y-shaped hose.

The invention discloses a kind of carbon tank solenoid valve, it includes the valve mechanism (20) being arranged in valve housing (10), the valve mechanism (20) includes stator (21), armature (22) and coil assembly (23), wherein, the stator (21) and the armature (22) are arranged in a line, and with the coil assembly (23) side by side, the stator and the armature are arranged at the outside of the coil assembly (23) so as to be magnetized by the magnetic field induced by the coil assembly (23), whereby the armature (22) can be moved between the first position of closing the carbon tank solenoid valve and the second position of opening the carbon tank solenoid valve by the attraction between the stator (21) and the armature (22).The invention allows to increase the maximum number of turns of the coil by placing the stator outside the coil, thereby increasing the maximum ampere-turn ratio of the coil, improving the coil utilization rate, and increasing the electromagnetic force.

The utility model discloses a linear vibrator. The linear vibrator comprises a cylindrical shell with an internal accommodating space, a vibrator assembly, a stator assembly, an elastic piece, a circuit board and a T-shaped insertion piece, the elastic piece is in a plate shape and comprises an inner ring, an outer ring and an elastic arm spirally connected between the inner ring and the outer ring. The stator assembly is fixed in the shell, the circuit board is fixed outside the shell, and the vibrator assemblies are arranged in the stator assembly in a penetrating manner at intervals; at least three through holes are evenly formed in the positions, matched with the inserting pieces, of the upper side and the lower side of the axial direction of the shell in the circumferential direction at intervals, the radial length of the inserting pieces is larger than the radial depth of the through holes, and the inserting pieces are inserted into and stretch out of the through holes to clamp and fix the outer ring to the shell. And the vibrator assembly is elastically suspended in the accommodating space by connecting and fixing the inner ring. The linear vibrator is simple in structure, convenient to assemble and good in vibration performance.

The invention discloses a magnetism gathering ring of a nuclear-grade electromagnetic valve and a manufacturing method thereof, and is characterized in that the magnetism gathering ring is composed of magnetism isolating rings arranged on two sides of a coil framework, and a magnetism isolating cylinder is further arranged between the magnetism isolating rings. Through the arrangement of the magnetic gathering ring, the effect of gathering magnetic induction lines is achieved, when the electromagnetic coil is powered on to generate a magnetic field, the magnetic induction lines in the magnetic field are gathered through the magnetic gathering ring, so that the magnetic induction lines passing through the static iron core and the movable iron core in a unit space are increased, and the electromagnetic force borne by the static iron core and the movable iron core is increased; the electromagnetic force is effectively increased to ensure that the electromagnetic valve can work normally; the radiation-resistant coating is formed by coating the surface of the magnetic isolation ring with the radiation-resistant coating, so that the electromagnetic valve has good high temperature resistance, high-dose radiation resistance and shock resistance when used in the nuclear field, and the service life of the electromagnetic valve is prolonged; and meanwhile, the radiation-resistant coating is smeared on the surface of the magnetic isolation ring, so that the magnetic isolation ring can be protected from being influenced by corrosion caused by complex environmental conditions in the nuclear field.

This invention belongs to the field of machining technology and relates to a magnetic reluctance type dynamic hole cold extrusion device. It includes a housing with a magnetic loading assembly, which includes a support guide rail assembly on the housing. A cylindrical shot guide rail is mounted on the support guide rail assembly, and a coil is fitted onto the shot guide rail. A shot is fitted inside the shot guide rail. A mandrel assembly is located inside the housing on one side of the shot guide rail. The mandrel assembly includes a detachably connected boss mandrel and a non-boss mandrel. The end of the boss mandrel is used to connect to a mandrel. A guide buffer assembly includes a first mass block inside the housing. One end of the first mass block is connected to the shot, and the other end of the first mass block is connected to the end of the non-boss mandrel. At least one buffer block is provided on the first mass block, located near the shot. A limiting ring is fitted on the shot guide rail and is used to match the buffer block to achieve limiting. Using this invention, the mandrel is easy to disassemble, the surface quality is high, and the working efficiency is high.

The invention discloses a method for balancing the melt overheating temperature and interface reaction of an electromagnetic cold crucible and the electromagnetic cold crucible, belongs to the technical field of electromagnetic cold crucibles, and aims to solve the problem that the existing electromagnetic cold crucible cannot increase the overheating temperature of a metal melt and has negative effects on the integrity of casting and mold filling. According to the method for balancing the overheating temperature and the interface reaction of the melt in the electromagnetic cold crucible, the heat blocking layer is arranged at the bottom of the crucible body, the temperature of the heat blocking layer is regulated and controlled through the water segregator, heat preservation is achieved, meanwhile, the interface reaction of the heat blocking layer is reduced, and the heat insulation effect is improved. Pollution of the heat blocking layer to metal melt is reduced, and it is guaranteed that metal at the bottom of the crucible body is almost in a skull-free state. An electromagnetic cold crucible with a large aspect ratio is placed in an ultrahigh-frequency alternating electromagnetic field, eddy current hot melting metal generated by the ultrahigh-frequency alternating electromagnetic field forms hump-shaped metal melt in the electromagnetic cold crucible, and therefore the contact area between the metal melt and the inner wall of the electromagnetic cold crucible is reduced. The method is mainly used for increasing the melt overheating temperature of the electromagnetic cold crucible.

The utility model discloses a durable side air inlet fuel gas ejector structure which comprises an injection molding shell, a containing cavity is formed in the injection molding shell, an installation column is arranged in the containing cavity, and the installation column and the injection molding shell are fixedly installed. The air inlet shell is fixedly connected to the lower end of the injection molding shell, a valve seat is arranged in the air inlet shell, the valve seat is fixedly connected with the inner wall of the air inlet shell, a sliding stroke is formed between the valve seat and the mounting column, a movable iron core is arranged in the sliding stroke in a sliding mode, a wear-resisting ring is arranged on the circumferential face of the movable iron core, and a wear-resisting piece is arranged at the top of the wear-resisting ring; the electromagnetic force in the ejector is enhanced, the abrasion-resistant high polymer material abrasion-resistant ring is arranged on the circumferential face of the vertical moving stroke of the movable iron core, and the abrasion-resistant piece is arranged at the top of the vertical moving stroke of the movable iron core. The composite material has excellent comprehensive properties such as high temperature resistance, self-lubrication, corrosion resistance, flame retardance, hydrolysis resistance, wear resistance and fatigue resistance, and is relatively high in wear resistance.

The application belongs to the technical field of low-voltage electrical apparatus, and particularly provides a low-power under-voltage release based on high-end NMOS driving, which comprises a surge absorption circuit, a rectification circuit, a DC / DC circuit, a voltage detection and release driving circuit, a starting time control circuit, a starting current control circuit, a release control circuit and a release coil; the rectification circuit is connected with the surge absorption circuit, the DC / DC circuit and the starting current control circuit respectively; the DC / DC circuit is further connected with the voltage detection and release driving circuit and the starting time control circuit respectively; the voltage detection and release driving circuit is further connected with the release control circuit; the release control circuit, the starting time control circuit and the starting current control circuit are sequentially connected; and the release control circuit and the starting current control circuit are both connected with the release coil. The low-power under-voltage release based on high-end NMOS driving has the advantages of low power consumption, long service life, stable action voltage and the like.

The utility model aims to provide an anti-shake camera shooting driving device, which comprises a protective shell and a base which are buckled with each other to form an accommodating cavity, an accommodating cavity is formed in the base, an optical element protruding out of the protective shell, a carrier for bearing the optical element and a focusing driving assembly are arranged in the accommodating cavity, the anti-shake reed comprises a plane part and a bending part, and the bending part is provided with an elastic structure, so that the anti-shake reed can be elastically connected between the carrier and the base; wherein the elastic structure comprises a spring wire which is formed by bending and extending inwards from the end part of the bending part, and the wall surfaces of the bent and extended spring wire do not interfere with each other. The bent anti-shake reeds which are independently arranged at the four corners of the supporting carrier are adopted, bosses at the four corners of a base in the prior art are omitted, the deformation amount of the base is reduced, the size control precision is improved, meanwhile, the anti-shake reeds are vertically and elastically supported between the carrier and the base, the K value of the reeds in the Z direction is larger, and compared with an original reed bent structure, the performance yield is easier to control.

The present application relates to a kind of arc extinguishing assembly and circuit breaker comprising the arc extinguishing assembly, the arc extinguishing assembly includes: side member, at a certain distance apart from each other and oppositely configuration;Exhaust part, set in the upper portion of the side member;Multiple grids, set between the side member, and both ends are fixed to each side member;Arc guider, one side is combined with the side member, set in the lower portion of multiple grids;And magnet, set as in the lower portion of multiple grids, both ends are combined with the side member respectively, and electromagnetic force is formed in the direction towards the grid.

An explosion-proof type explosion-proof electromagnetic valve comprises a magnetic conductive shell, an electromagnetic valve body, an electromagnetic valve body and a control device, an installation cavity is formed in the magnetic conductive shell, and the magnetic conductive shell is an electric conductor with magnetism; the driving assembly comprises a coil main body which is arranged in the mounting cavity; the explosion-proof coil is characterized in that the coil main body is wrapped and filled with an explosion-proof layer formed by an insulating heat-resistant material; the coil main body is electrically connected with the magnetic conductive shell, and the magnetic conductive shell is grounded; and the magnetic conductive shell is matched with the height of the coil main body and wraps the coil main body. According to the flame-proof type explosion-proof electromagnetic valve, the coil main body can take the magnetic conductive shell as a dielectric medium to realize grounding, so that the space for arranging a flame-proof shell and a wire holder is saved, and the volume miniaturization arrangement of the flame-proof type explosion-proof electromagnetic valve is facilitated; and meanwhile, the explosion-proof layer in the magnetic conductive shell also enables the explosion-proof capability of the magnetic conductive shell to be stronger, so that the magnetic conductive shell has the functions of explosion suppression and magnetic conduction at the same time, and has the advantage of dual purposes.

The utility model discloses a miniature loudspeaker with double voice coils, which adds a planar voice coil between the diaphragm and the longitudinal voice coil, increases the overall electromagnetic force without substantially changing the size of the loudspeaker, cancels the upper magnetic guide plate of the main magnet to change the magnetic force distribution area and make more magnetic lines pass through the planar voice coil, so as to increase the overall electromagnetic force and improve the loudspeaker volume.

The utility model relates to the technical field of vibration motors, and discloses a linear vibration motor, which comprises an upper cover, a lower cover, a vibrator assembly, a stator assembly and an elastic piece, and is characterized in that the stator assembly comprises an upper annular support and a lower annular support which are split and symmetrically arranged, a magnetic conductive ring and a coil which are respectively fixed on the inner wall surfaces of the supports, and a circuit board fixed on the outer wall surfaces of the supports; the upper cover and the lower cover respectively cover the two ends of the support to form an accommodating space, and the vibrator assembly is elastically suspended in the accommodating space through the elastic pieces at the two ends of the vibrator assembly; a first annular mounting groove and a second annular mounting groove are oppositely and concavely formed in the inner wall surface of one side, far away from the upper cover and the lower cover, of the bracket, and plane mounting grooves are oppositely and concavely formed in the outer wall surface; the first mounting groove and the second mounting groove are radially communicated, and the second mounting groove is adjacent to the vibrator assembly; the magnetic conductive ring is embedded in the first installation groove, the coil is embedded in the second installation groove, and the circuit board is fixed in the plane installation groove. The vibration motor is simple in structure, convenient to assemble and high in vibration feedback performance.