32results about How to "Act as magnetic isolation" patented technology

The invention discloses a high-impermeability continuous roof system, and belongs to the technical field of buildings. A flush side-attaching water guide column is arranged at the joint of a roof panel body, hydrophobic sealing strips are conventionally arranged on the inner side of the side-attaching water guide column for seepage prevention, and rain blocking steel wires are arranged in advanceto intercept and guide rainwater, so that gathering of the rainwater at the hydrophobic sealing strips is reduced; meanwhile, seepage-sensing expansion rods are introduced into the hydrophobic sealingstrips, magnetic drive variable anti-seepage balls and water absorption balls are arranged at the corresponding ends, the arc-shaped characteristic and the water swelling characteristic of the seepage-sensing expansion rods are utilized, and once water seeps into a joint, the anti-seepage action of the seepage-sensing expansion rods is triggered immediately, the seepage-sensing expansion rods areexpanded and force the magnetic drive variable anti-seepage balls to move in the preset extending direction, so that the magnetic drive variable anti-seepage balls on the adjacent hydrophobic sealingstrips are connected under the magnetic action; and meanwhile, the hydrophobic sealing strips are driven to deform in a flat s mode, a natural anti-seepage belt is formed, and the anti-seepage performance of the continuous roof system is greatly improved.

The invention discloses an autonomous ventilation and heat exchange type power distribution cabinet, which belongs to the technical field of power distribution cabinets. Inner ventilation hoods and outer dustproof plates are additionally arranged at left and right ventilation openings of a cabinet body, when the cabinet body is in a normal low-temperature environment, a pair of outer dustproof plates are connected to the ventilation openings in a sealed manner, so that the dustproof and moisture-proof effects are achieved, and when the interior of the cabinet body is in a high-temperature environment, a plurality of memory deformation rods connected to a flexible magnetic isolation sheet recover to a spring phase state due to high temperature and pull the flexible magnetic isolation sheet to turn outwards, after an inner magnetic sheet is slowly exposed, the inner magnetic sheet plays a magnetic repulsive role on an outer magnetic sheet, so that an outer dustproof plate moves outwards, and after the outer dustproof plate is separated from a ventilation opening, the elastic dustproof cloth connected between the outer dustproof plate and the positioning frame is exposed, at the moment, air outside the cabinet is guided into the cabinet body through the elastic dustproof cloth, autonomous ventilation and heat exchange are achieved according to the environment in the cabinet, and meanwhile the ventilation and heat dissipation effects are further improved by means of starting of the heat dissipation fan.

The invention discloses a ship magnetic separator suitable for seawater separation, which comprises a rack (6), a trough body (1), a permanent magnetic drum (3) and a driving device (2), a magnetic system (8) and a magnetic system fixing device (5). Two ends of a mandrel (7) are made of solid sectional anti-corrosive stainless steel, the middle hollow section and the end solid section of the mandrel (7) are in threaded connection and welded firmly, the two ends of the mandrel (7) are supported by a mandrel bases through copper sleeves (4) in a matching manner, and are in a mutual opposite axial stop design; and the rack (6) is designed to be in a frame structure, adopts high-strength structure carbon steel square tubes, and is in full contact connection with a deck through the bottom surfaces of two parallel beam bottoms. The permanent magnetic drum (3) is made of anti-corrosive stainless steel, and the outer surface of the rack (6) is sprayed with paint which is resistant to seawater corrosion. A feeder box (13) and the trough body (1) are integrally designed. The ship magnetic separator has excellent performance in wind resistance, bump prevention and salt fog prevention, can be installed on the ships operating on rivers and seas to recycle and select the strong magnetic iron minerals in river sand and sea sand.

The invention discloses a periscopic meter reading type convenient electric meter box, belongs to the technical field of electric meter boxes, and can realize that a special periscopic meter reading tube is arranged, and based on the working principle of a periscope, a worker can complete the meter reading work of an uppermost row of electric meters without climbing, so convenience is improved, and the danger is reduced; the meter reading mirror body can provide an amplification effect based on the optical principle of a convex lens, so a worker can conveniently observe the degree, the meter reading work of the worker can be further facilitated, through combined arrangement of a driving and guiding iron block, a magnetic isolation sleeve, a self-positioning reading board and the like, the periscopic meter reading tube can be sequentially positioned and moved to the front of each electric meter under the action of magnetic attraction force between the driving and guiding iron block and the driving and guiding magnet, so the worker does not need to adjust the position of the periscopic meter reading tube with effort to move the periscopic meter reading tube to the front of each electric meter, working efficiency of the worker can be remarkably improved, and practicability is greatly improved.

The invention relates to the loudspeaker box system technology field and especially relates to a vibration reduction loudspeaker box system. A loudspeaker box body in the vibration reduction loudspeaker box system adopts an electromagnet to suspend a loudspeaker. A foot stand adopts a hollow column which is filled with a cast iron powder. And a top panel is made of a vibration reduction plate. The column, the top panel and a bottom panel are connected and fixed through spot welding. By using the loudspeaker box system, vibration is small and sound quality is good.

The invention relates to the technical field of sound systems and in particular relates to a vibration-damping sound box. According to the vibration-damping sound box, an electromagnet is adopted to keep a loudspeaker suspended; besides, a vibration-damping sound insulation layer is arranged outside a sound box housing; such a sound box is low in resonance and capable of producing good-quality sound.

The invention relates to the technical field of sound systems, specifically to a vibration-reducing loudspeaker box system. A loudspeaker box main body in the vibration-reducing loudspeaker box system adopts electromagnets to suspend a loudspeaker, and a foot stool is a hollow stand column filled with cast iron powder, and vibration reducing legs are arranged at the bottom of the foot stool. The loudspeaker box system is relative small in vibration, and better in tone quality while producing sound.

The invention relates to the technical field of sound systems, in particular to a sound box system. A sound box body in the sound box system adopts an electromagnet to levitate a loudspeaker, and foot stands are hollow stand columns filled with cast iron powder. The vibration of the sound box system is smaller and the made sound quality is better.

The invention discloses an aluminum alloy supporting frame and belongs to the technical field of aluminum alloy supporting frames. A flame-retardant supporting structure is formed by a lower supporting surface, an upper supporting surface and a packaging panel which are distributed up and down, and primary flame retardance of a supporting plate up and down is achieved through cooperation of fireproof cotton and a flame-retardant foam filling layer; a fire source or a heat source is effectively prevented from being transmitted between cargo layers to a certain extent, safety performance is improved, a plurality of water vapor flame-retardant bodies are distributed in a flame-retardant cavity formed by a bearing plate, under the condition that the fire source is large or the temperature is high, a thermal expansion flame-retardant bag is heated, first inert gas in the thermal expansion flame-retardant bag is heated to expand to extrude an overflow part, under the condition that the pair of gas storage hemispheres are heated and extruded, the inert gas I in the thermal expansion flame-retardant bag is further promoted to overflow into the overflow part, so the fireproof cotton distributed up and down is filled with the cooling liquid, the fireproof cotton can be soaked, and the inert gas I overflows into the fireproof cotton to extinguish a fire source; and the flame-retardant and fire-extinguishing performance of the bearing plate is further improved.

The invention discloses a paddle floating imitation type still water ecosystem suspension restoration device. The invention belongs to the field of water body remediation devices. The paddle floatingimitation type still water ecosystem suspension restoration device comprises a repairing column ; and the two ends of the repairing column are fixedly connected with a main airbag and an auxiliary airbag correspondingly. The repairing column comprises an inner column, and a rolling groove is formed in the inner column; a magnetic isolation rolling ball is placed in the rolling groove; trapezoidalgrooves are formed in the left and right inner walls of the rolling groove; and inner plates are arranged in the trapezoidal grooves. According to the invention, initial power is provided for the magnetic isolation rolling ball; under the action of a double-force balancer, the magnetism isolating rolling ball can continuously move back and forth; the inner plates are driven to move to impact the inner plates in a circulating mode, supporting rods and paddles are driven to rotate through movement of the inner plates, the paddles imitate paddling of the paddle in the water body, power is broughtto the repairing column, and the repairing column continuously moves in the water body, so that the water body at different positions is restored, and the uniform and comprehensive restoration process of the still water ecological system is achieved.

The invention discloses a solar heat collector with high light-collecting and heat-conducting functions, and belongs to the technical field of solar heat collection. A pair of light reflecting pieces is installed at the bottom end of a main heat-collecting pipe, sunlight is reflected to the backlight surface of the main heat-collecting pipe, the light-collecting and heating surface of the main heat-collecting pipe is expanded, in addition, a plurality of auxiliary heat collecting pipes are arranged on the main heat-collecting pipe in a distributing mode, the upper end walls and the lower end walls of the auxiliary heat collecting pipes are both wrapped around magnetic columns through elastic magnetism isolating layers, the magnetic columns are connected to a heat conducting plate through memory alloy rods, and after the temperature of the light receiving faces of the auxiliary heat collecting pipes rises, the memory alloy rods recover to the high-temperature spring phase state and contract to enable the magnetic columns to extrude the elastic magnetism isolating layers, and after the elastic magnetism isolating layers deform, the magnetism isolating effect on the magnetic columns is weakened, so that magnetic attraction strips located on the lower portions have the magnetic attraction effect on the displaced magnetic columns, the auxiliary heat collecting pipes are promoted to rotate to change the light receiving faces of the auxiliary heat collecting pipes, and the circulation is conducted, so that the auxiliary heat collecting pipes are comprehensively and uniformly heated, and heat transfer media are effectively and comprehensively conducted.

The invention discloses a permanent magnet motor rotor structure for an electric vehicle. The permanent magnet motor rotor structure comprises an iron core, a first magnetic steel groove group, a second magnetic steel groove group, a first magnetic steel group, a second magnetic steel group and a magnetic barrier, and is characterized in that the magnetic barrier, the first magnetic steel groove group and the second magnetic steel groove group are fixed on the iron core, the first magnetic steel group and the second magnetic steel group are embedded in the first magnetic steel groove group and the second magnetic steel groove group respectively, the included angle of the first magnetic steel groove group ranges from 115 degrees to 175 degrees, the included angle of the second magnetic steel groove group ranges from 75 degrees to 120 degrees, and at least one position of the magnetic barrier is placed in the middle of the second magnetic steel group. According to the invention, a linear magnetic steel group in a traditional V+- linear rotor structure is changed into a v shape, so that the utilization rate of magnetic steel is increased, and the yield strength of a material at a high rotating speed is improved; and by arranging the magnetic barrier, a magnetic isolation effect is achieved, and the utilization rate of the magnetic steel is improved.

The invention belongs to the field of motor manufacturing. In order to overcome the technical problems of the rotor punching sheets of the inner rotor permanent magnet motor used in the prior art, the invention provides a rotor punching sheet for an inner rotor permanent magnet motor. The rotor punching sheet comprises an annular sheet body, wherein a middle hole of the annular sheet body forms a shaft hole. The rotor punching sheet is characterized in that trapezoidal grooves corresponding to the pole numbers of the motor are uniformly formed in the outer edge of the sheet body, the bottom edges of the trapezoidal grooves are positioned at the outer edge of the sheet body, and magnetic steel inserting holes are formed in the sheet body between the two trapezoidal grooves and are near the edge of the sheet body. Compared with the traditional rotor punching sheet, the rotor punching sheet of the inner rotor permanent magnet motor has the advantages that the magnet leakage prevention effect is obviously improved, and the obvious promotion effect is realized on the further improvement of the motor performance.

The invention relates to the field of loudspeaker system technology and relates to a loudspeaker system. A loudspeaker of a loudspeaker body in the loudspeaker system is suspended by an electromagnet. Foot stands are of hollow stand columns filled with cast iron. Vibration attenuators are arranged on the foot stands. According to the invention, vibration is small and quality of given-out sound is quite high.

The invention relates to the sound equipment system technology field and especially relates to a loudspeaker box. In the loudspeaker box, an electromagnet is used to suspend a loudspeaker, and a base plate and a top plate are provided with perforated plates so as to carry out vibration attenuation and sound absorption. By using the loudspeaker box, resonance is small and sound quality is good.

The present invention proposes a magnetic suction wire for storing VR glasses, including a glasses body, the glasses body is provided with a winding groove, a magnetic adsorption pad is provided at the bottom of the winding groove, and a VR wire is provided on the glasses body. The outer wall of the VR cable is spirally wound with a short-twist metal spring wire that is mutually adsorbed to the magnetic adsorption pad. The side of the glasses body is provided with a chute that runs through the winding groove. The slider is provided with a clamping positioning head, and the clamping positioning head is provided with a snap-in port for engaging the released VR line, and the side of the clamping positioning head facing the VR line in the unreleased state is provided with an unreleased VR line. The pressing port where the state VR line is against each other, and the thread management slider is provided with a clamping spring that pushes the line management slider towards the direction of the VR line in the unreleased state. The invention has the advantages of convenient carrying, convenient storage of wire rods, controllable release length of wire rods, effective prevention of wire rod knotting, high compressive strength of wire rods, softness and flexibility.

The invention relates to the sound equipment system technology field and especially relates to a loudspeaker box. In the loudspeaker box, an electromagnet is used to suspend a loudspeaker. By using the loudspeaker box, resonance is small and sound quality is good.

The invention discloses a heat conduction structure for heat dissipation of a PE plate, and belongs to the technical field of PE plates. High temperature at the PE plate can be transmitted and dissipated outwards by arranging a matching structure of a honeycomb heat conduction sheet and heat conduction cotton on the outer end face of the PE plate, a plurality of heat conduction columns are distributed on the upper end face of the honeycomb heat conduction sheet, and the multiple heat conduction columns are high in fixed-point heat conduction performance, and conduct heat to a heat dissipation plate in a centralized manner. When the temperature of the heat conduction columns is too high, a magnetic driving mechanism deforms and is separated from a pair of magnetic grating plates, and at the moment, the pair of magnetic grating plates slide downwards to be separated from a heat dissipation cavity under the gravity action of the magnetic grating plates, so that the conduction area between the heat conduction columns and the heat dissipation cavity is enlarged, the heat conduction columns embedded in the inner side communicate with the outside, so that the heat conduction and heat dissipation performance of the heat conduction columns is effectively improved, rapid cooling of the PE plate is achieved, and in the natural low-temperature state, the magnetic driving mechanism is connected with a pair of magnetic partition plates in a magnetic attraction mode, and sealing, dust prevention and moisture prevention of the heat dissipation cavity are achieved.

The invention relates to the technical field of sound systems, and more particularly to a vibration attenuation sound box. In the vibration attenuation sound box, a loudspeaker is suspended through an electromagnet, a sound box shell is made of a vibration attenuation board, and a vibration attenuation base is arranged at the bottom of a bottom board. The sound box has smaller resonance and has good tone quality.