20 results about "Lenz's law" patented technology

The invention discloses a Lenz's law-based anti-overturning uniform linear motion experimental instrument and an experimental method thereof, and the instrument comprises a non-magnetic tube body which is vertically arranged; the anti-overturning magnet comprises a magnetic ball and a guide block, the guide block is connected with a magnetic pole of the magnetic ball, and the anti-overturning magnet can be arranged in the non-magnetic pipe body; the Hall sensors are arranged at intervals in the axial direction of the non-magnetic pipe body; and the microcontroller is electrically connected with the Hall sensor. Overturning and rotating of the magnet during falling can be effectively limited, track deviation is avoided, and it is ensured that the magnet stably does uniform linear motion; the device is simple in structure and convenient to operate, can visually display the uniform linear motion phenomenon, assists students in understanding the speed concept, and improves the teaching effect.

The utility model relates to an adjustable lure line cup magnetic brake structure, which belongs to the technical field of magnetic brake structures, and comprises a positioning wheel, the positioning wheel is fixed with a wheel seat of a fishing rod, the outer surface of the positioning wheel is in threaded connection with two brake discs, a brake assembly is arranged between the two brake discs, and the brake assembly is connected with the fishing rod. A wire wheel is arranged on the outer surface of the brake assembly. According to the adjustable lure line cup magnetic brake structure, after bait is thrown out, inertia of the bait pulls a fishing line, the line wheel is further promoted to rotate, when the line wheel rotates, the line wheel continuously cuts a magnetic induction line of the magnet, according to the Lenz's law, the line wheel is subjected to acting force opposite to the movement direction to hinder movement, and therefore speed reduction is achieved, and the line wheel is prevented from rotating. The rotating speed of the line wheel is promoted to be matched with the line outlet speed of the fishing line, damping adjustment can be achieved by replacing different brake discs, the line outlet stability of the fishing line is further improved, and the line explosion prevention effect of the fishing rod is improved.

The application discloses a quick-acting electromagnet and high-voltage switch equipment, wherein the quick-acting electromagnet comprises a shell, a moving execution shaft movably arranged in the shell along the length direction of the shell, a static iron core for driving the moving execution shaft to move in the axial direction of the moving execution shaft to a first direction, a coil and a moving iron core, and a closing conductor movably arranged in the shell along the axial direction of the moving execution shaft, wherein the closing conductor is arranged outside the end of the moving iron core facing the static iron core and connected with the moving execution shaft, and the closing conductor applies an additional driving force to the moving execution shaft to move in the first direction after the coil is electrified. The electromagnet of the application sets the closing conductor and utilizes the Lenz law, so that when the moving execution shaft moves, the moving execution shaft not only receives the driving force generated by the attraction of the moving iron core and the static iron core, but also receives the electromagnetic force generated by the closing conductor. Under the driving of the two driving forces, the movement acceleration of the moving execution shaft can be significantly improved, and the movement time of the moving execution shaft is reduced.

The utility model discloses a quick air valve, and belongs to the technical field of air valves. The electromagnetic valve comprises an electrode flange and a working valve, the working valve is arranged at the upper end of the electrode flange and comprises a valve shell, a coil base and a valve cover, the valve shell is fixedly installed at the upper end of the electrode flange, the coil base is sleeved with the valve shell, a containing cavity is formed in the coil base, and a copper coil is fixedly installed at the end, close to the electrode flange, of the containing cavity. An aluminum sheet is fixedly installed at one end of the copper coil, a round pipe is fixedly installed on one side of the aluminum sheet, and an air injection hole and an air leakage hole are formed in one side of the valve deck and are symmetrically distributed in the valve deck. According to the utility model, the two-core aviation plug is electrified firstly, the current reaches the copper coil, magnetic flux transformation is generated, the aluminum sheet induces eddy current, and according to the Lenz's law, the aluminum sheet moves upwards, the gas injection hole connected with vacuum is opened, gas is injected, the volume of the injected gas is not excessive, and the stability of equipment and the proceeding of a test are facilitated.

The invention provides an electromagnetic anti-swing mechanism of a stacking machine and a method thereof, belongs to the field of logistics sorting, and aims to realize anti-swing control through an eddy current damping effect on the basis of an electromagnetic induction principle of a Lenz's law. Therefore, the purposes of simplifying the structural design of a related braking mechanism, improving the anti-swing performance of the stacking machine, being suitable for different machine body heights, solving the contradiction between high speed and stability and remarkably improving the overall operation efficiency and safety of a three-dimensional warehouse are achieved. The electromagnetic anti-swing mechanism comprises a non-contact electromagnetic damping module which is installed on the opposite side of the sky rail, on the upper cross beam of the stacking machine and used for generating an electromagnetic field, an eddy current conductor plate assembly installed on the goods shelf, and a dynamic sensing feedback system installed on the upper cross beam of the stacking machine and used for achieving dynamic feedback closed-loop control of an electromagnetic system.

The invention relates to a damping door control structure and cooking equipment, the damping door control structure is used for the cooking equipment, the cooking equipment comprises a box body, and the damping door control structure comprises a door body assembly and a damping assembly; the door body assembly is used for being rotatably arranged on the refrigerator body so as to open or close the refrigerator body. The damping assembly comprises a magnet and a copper pipe, the magnet is convexly arranged at one end, close to the box body, of the door body assembly, and the copper pipe is arranged at one end, close to the door body assembly, of the box body; in the closing process of the door body assembly, the magnet extends into the copper pipe; and in the opening process of the door body assembly, the magnet is separated from the copper pipe. When the door body assembly is closed, the magnet extends into the copper pipe, the magnetic field of the magnet penetrates through the wall of the copper pipe, and the magnetic flux in the copper pipe is changed. According to the Faraday's law of electromagnetic induction, eddy current can be generated in the copper According to the Lenz's law, the magnetic field direction of the eddy current always hinders relative movement of the magnet and the copper pipe, so that resistance is formed, and the damping effect is achieved.

The invention relates to the technical field of aero-engine experiments, in particular to an experimental device and method for simulating the rub-impact effect of aero-engine rotor blades, and the device comprises a supporting seat, a rotating shaft, a simulation fan, an additional rotor, a coupler, a drive motor, a rub-impact simulation assembly and a test assembly. According to the scheme, the electromagnetic driving principle based on the law of electromagnetic induction and the Lenz's law is adopted, the rub-impact force can be accurately controlled by changing the magnitude of current, different rub-impact modes such as a single point, multiple points, a local arc section and even a whole circle can be conveniently simulated for each blade unit, and complex working conditions such as friction coefficient change can be conveniently simulated. Compared with the prior art, the device has the advantages of no contact, no actual wear, no noise, smooth and adjustable rub-impact force and simple maintenance, and the experiment efficiency, reliability and accuracy of simulating the rub-impact effect of the aero-engine rotor blade are improved.

The invention discloses a push-pull upper rail connecting device which comprises an upper sliding rail, a buffer rail, a buffer sliding block, a hoisting base, a door leaf hoisting assembly, a linkage structure and a state switching assembly, the buffer rail is arranged in a sliding cavity of the upper sliding rail, and annular magnets are arranged on the buffer rail at intervals; the buffering sliding block is slidably arranged on the buffering track in a sleeving mode and provided with an insulating coil. The door leaf hoisting assembly comprises a transverse shaft rotating through a vertical shaft and rolling wheels at the two ends, the state switching assembly drives the vertical shaft to enable the rolling wheels to be switched between hoisting base containing holes and wheel rails, the rolling wheels are contained during installation, the hoisting base is inserted into a sliding cavity and then is in butt joint with a buffering sliding block, and the rolling wheels are unfolded to hoist a door leaf. During disassembly, the rollers can be directly moved out of the hoisting base after being stored, disassembly and assembly of the upper rail sliding door and maintenance and overhaul of the rollers and the upper sliding rail are facilitated, the buffering sliding block is based on the Lenz's law, an insulation coil cuts magnetic induction lines to generate an induced magnetic field, the buffering force can be adjusted in a self-adaptive mode at any position according to the acceleration of the door leaf, and the buffering effect is outstanding.

The utility model discloses a cable winding device for coal mine mechanical and electrical installation, which comprises a foot margin assembly, a bottom plate is arranged at the top of the foot margin assembly, a vertical plate is arranged at the top of the bottom plate, the bottom plate is fixedly connected with the vertical plate, two dismounting wheels are arranged on the side surface of the vertical plate, and a rotating wheel is arranged between the two dismounting wheels. An EMI filter is arranged on the side face of the detachable wheel. According to the cable winding device for coal mine mechanical and electrical installation, electromagnetic compatibility can be achieved by means of the EMI filter, electromagnetic interference is eliminated, electromagnetic compatibility is achieved, eddy current with the same frequency is induced on the outer surface of the cable winding device through the metal shielding sleeve, and therefore energy of high-frequency interference is consumed; and the eddy current also generates a new magnetic field, and the direction of the new magnetic field is just opposite to the direction of the interference source according to the Lenz's law so as to counteract a part of energy interfering the magnetic field, so that a circuit in the electromagnetic shielding layer is prevented from being influenced by the high-frequency interference magnetic field.

The invention discloses an electromagnetic buffering device which comprises an electromagnetic buffering device primary structure and a secondary structure, the primary structure comprises a first end cover, a machine shell, a second end cover, a primary iron core, a coil framework, a magnet exciting coil, a first permanent magnet, a second permanent magnet and a distance ring, and the magnet exciting coil is wound on the coil framework; the first permanent magnet, the spacer ring and the second permanent magnet are sequentially arranged at intervals; the secondary comprises a secondary iron core and a conductor ring; the first end cover and the end part of the secondary iron core are provided with external threads and can be in threaded connection with other external devices; when an external device drives the secondary to do linear motion, the conductor rings on the primary and the secondary move relatively, eddy current is generated in the conductor rings according to the law of electromagnetic induction and the Lenz's law, the eddy current interacts with a magnetic field generated by the primary to generate braking force for preventing relative motion of the primary and the secondary, and therefore the device can achieve the buffering effect.

The utility model discloses a material conveying turning structure of an aluminum material extruding machine, which relates to the field of profile processing, and adopts the technical scheme that the material conveying turning structure comprises a base and a baffle plate positioned on the top surface of one side of the base, the top surface of the base is connected with a speed brake in a sliding manner, one side of the speed brake close to the baffle plate is fixedly connected with a sliding rod, and magnetic blocks are linearly arrayed on the sliding rod; the baffle is fixedly connected with a copper ring, the sliding rod penetrates through the copper ring, and the magnetic block can penetrate through the copper ring. According to the utility model, the speed reducing plate abuts against the raw material and pushes the sliding rod to slide relative to the copper ring, when the magnet passes through the copper ring, the magnet is subjected to resistance based on electromagnetic induction and Lenz's law, so that the movement of the speed reducing plate and the raw material is slowed down, the kinetic energy is smaller when the raw material is contacted with the baffle plate, and the higher the raw material rolling speed is, the more obvious the speed reducing effect is; the surface of the raw material is prevented from generating flaws to influence the quality of the aluminum profile.

The invention proposes a Gravitational and Magnetic Force to Electrical Energy Conversion System (GMECS), a solution based on the simple pendulum principle and developed from the successful foundation of the "Large-sized clock, low power consumption" invention (internationally published by WIPO in 2022). GMECS overcomes the inherent challenges of using a simple pendulum for large-scale electricity production by optimally and effectively combining the interaction of the Earth's gravitational field with the powerful magnetic field of Neodymium N52 rare-earth magnets and the controlled variable magnetic field of an electromagnet to generate significant and continuous torque. In this system, the pendulum's oscillation energy, maintained and amplified by a small amount of electrical energy from an external source (e.g., solar power), is converted into mechanical energy through a complex gearbox system comprising a one-way gearbox and a reversing gearbox. This mechanical energy is then transmitted to a speed-increasing gearbox to augment rotational speed, thereby rotating the rotor of a rare-earth magnet generator, producing useful electrical energy. Experiments have demonstrated the system's superior capability to generate 22W of output power with only 8.7W of input power, showing a positive and significant energy amplification factor (COP > 2.5). This additional energy is attributed to the efficient harnessing from the relative motion of the hundreds-of- kilogram pendulum within the Earth's gravitational field and the interaction between the magnetic field of rare-earth magnets and the controlled variable magnetic field of the electromagnet, via the pendulum's resonance mechanism. This successfully addresses technical challenges, including overcoming the inertia of the speed-increasing gearbox, the generator, and the Lenz's Law effect. The GMECS invention has the potential for scalable electricity production, offering significant benefits in energy savings, providing independent distributed power, being environmentally friendly, and having broad applicability in both industrial and agricultural sectors, especially in areas difficult to access traditional energy sources or requiring sustainable energy solutions.

The invention discloses a slow descending mechanism and lifting equipment capable of descending slowly, and relates to the technical field of constant-speed slow descending mechanisms, the slow descending mechanism comprises a propeller slow descending assembly, a band-type brake assembly, an electromagnetic slow descending assembly and a detection assembly, and a rotating shaft of the propeller slow descending assembly is connected with the band-type brake assembly and the slow descending mechanism through a belt wheel transmission mechanism; a rotating shaft of the propeller slow descending assembly is connected with a rope through a belt wheel, the detection assembly is arranged below the propeller slow descending assembly and used for detecting the rotating speed of the propeller slow descending assembly, and the detection assembly is in communication connection with the band-type brake assembly and the slow descending mechanism. The coil cutting magnetic field of the electromagnetic slow descending assembly is used for generating current, after short circuit connection, according to the Lenz's law, resistance generated by the slow descending device automatically adapts, the rotating speed is increased, the generated resistance is increased, the rotating speed is decreased, the generated resistance is decreased, and the whole descending process is smooth and free of the blocking phenomenon.

The present invention relates to the field of rescuing and evacuating persons trapped in a high-rise building or the like that is on fire. This is a device for rescuing and evacuating occupants of the building or the like who are trapped between debris, smoke and fire, which pose an imminent danger to their lives. Consider the following scenario: a given building is on fire; since the power is out, the lifts are out of service or it is advised not to use them and the only remaining means for escaping safely from the building is of course the stairs, and since there are on average 17 steps from one floor to the next, the result can be calculated by multiplying this by the number of floors to travel. In addition, if the following factors are added to this equation: panic, crowding, dense smoke and debris which probably block the corridors, then it is a matter of being restricted to using the stairs, with no guarantee of being able to reach the exit of the building in question. Thus, the present rescue device is used to provide the ideal solution for safely evacuating the building in question, in record time: the rescue device comprises a capsule which can accommodate four persons safely in view of the materials from which it is constructed. Once on-board, and after having fastened their individual safety belts, as soon as the access to this capsule is closed, it will be automatically dropped, without initial speed, to begin travelling through an evacuation tunnel towards the bottom of the building. Just before the end of this tunnel, the capsule enters a slowing-down phase by the effect of Lenz's law, since the capsule is equipped with several powerful neodymium magnets, and the sides at the bottom of the evacuation tunnel and its base are covered with copper, which ensures a soft and easy landing. Next comes the extraction phase: when the capsule comes into contact with the base of the tunnel, the phase of ejecting the capsule from the evacuation tunnel starts via the ejection mechanism, which ensures that the capsule is ejected in order to complete the evacuation cycle, thus allowing its occupants to exit safely and as quickly as possible, to give way to the other capsules that will follow. All this takes place automatically without any intervention of the occupants, who only need to fasten their individual safety belt and close / open the access to the capsule.

The utility model relates to a track sliding pipe device with a permanent magnet eddy current braking mechanism, which comprises a track, a permanent magnet eddy current braking mechanism, a permanent magnet eddy current braking mechanism, a permanent magnet eddy current braking mechanism and a permanent magnet eddy current braking mechanism, and the permanent magnet eddy current braking mechanism is arranged on the permanent magnet eddy current braking mechanism. The tackle comprises a tackle body and tackle braking assemblies arranged on the two sides of the tackle body, each tackle braking assembly comprises mounting seats which are oppositely arranged, the mounting seats are sunken inwards from the opposite faces to form mounting grooves, magnets are fixed in the mounting grooves, a distance is formed between the magnets, and the distance is larger than the thickness of the braking plate; based on electromagnetic induction and the Lenz's law, eddy current is generated through relative movement of the magnet and the aluminum brake plate to achieve braking, kinetic energy is converted into heat energy, and compared with traditional schemes such as rubber sheet friction braking and spring pressurization braking, the non-contact characteristic eliminates mechanical abrasion, and the service life of equipment is remarkably prolonged.

The utility model discloses a large-caliber anti-drop and anti-shake magnetic compensator which comprises a swing piece set and a mounting base, the mounting base is provided with a slot, the swing piece set is of a U-shaped structure, the top of the swing piece set extends into the mounting base through the slot and is connected with the mounting base through a screw, and the swing piece set is symmetrically provided with two through grooves. Two hanging springs are arranged in each through groove in a crossed mode. The magnet is located above the damping plate, and the damping plate is made of copper materials, so that magnetism exists between the damping plate and the magnet. When the swinging piece set shakes, according to the Lenz's law, the conductor moves in the magnetic field and cuts the magnetic induction lines, and electromotive force is generated in the conductor. If the conductor and the magnetic pole move relatively, induced current can be generated in the closed conductor, and a magnetic field generated by the induced current can hinder the relative movement, so that a damping effect on the gas magnetic piston is achieved, and the deviation angle is corrected. And meanwhile, through the magnetic connection relation, shaking during angle deviation can be reduced.

The invention relates to the technical field of superconducting power generation, in particular to a superconducting turbine rotation excitation focusing magnetic flux type power generation system and method. The device comprises a multi-layer vacuum low-temperature maintenance stainless steel tank unit, a rotary excitation focusing function unit, a prime motor driving unit, a coil capture magnetic flux power generation unit and a strong magnetic generation and power supply control unit. The prime motor drives the shell with the shielding focusing function and the superconducting wing-shaped turbine with the focusing excitation function to rotate, excites and focuses magnetic flux generated by the strong magnetic coil and superposes magnetic flux of an earth magnetic field, and guides the magnetic flux to the closed coil to capture the magnetic flux to directly generate power and output electric energy. According to the power generation principle, reactive force hindered by the induction type power generation Lenz law does not exist, electric energy supply is reduced through self-sustaining internal circulation of the superconducting motor and the strong magnetic generation superconducting coil, and the power generation efficiency of the superconducting turbine rotation excitation focusing type power generator is directly improved through four modes for improving the power generation efficiency.

The utility model discloses a heavy dynamic penetrometer capable of reducing rebound of a drop hammer, which comprises the drop hammer, a probe rod, an electromagnetic buffer device and a lifting device, and a plurality of layers of composite buffer gaskets are respectively arranged between a first connector and the drop hammer and between a second connector and the probe rod; a cross-shaped separation structure for separating the rod body into four units is arranged in the probe rod; an electromagnetic buffer device is arranged above an impact point at the top of the probe rod; the electromagnetic buffer device comprises a first electromagnetic coil, a second electromagnetic coil and a connecting rod; magnetic fields in opposite directions are formed by using the Lenz's law to restrain drop hammer rebound; the two sensors are arranged below the electromagnetic coil at the top of the probe rod, electrically connected with the electromagnetic coil and used for controlling the electromagnetic coil to be powered on and off; the lifting device comprises an electric pulley arranged at the top of the instrument and four lifting ropes penetrating through the drop hammer body. According to the utility model, the rebound of the drop hammer is effectively reduced, the measurement of the hammering number and the penetration depth is more accurate, and powerful support is provided for long-term monitoring and quality evaluation of engineering geology.

The utility model discloses a composite damper based on electromagnetic-hydraulic-metal buckling coupling. The composite damper comprises a magnetic conductive rod body unit, an electromagnetic induction unit, a hydraulic damping unit and a rotary connecting unit. The magnetic conductive rod body unit penetrates through an inner cavity of the electromagnetic induction unit, and two ends of the magnetic conductive rod body unit are connected with the outside through the rotary connecting unit; the electromagnetic induction unit comprises a conductive layer in clearance fit with the magnetic conductive rod body unit and a cooling medium layer surrounding the conductive layer. The hydraulic damping unit is composed of viscous fluid filled in a cavity between the magnetic conductive rod body unit and the electromagnetic induction unit; and each magnetic conductive rod body unit comprises an energy dissipation structure capable of generating plastic deformation. Through electromagnetic induction and fluid damping composite energy consumption, a copper barrel-shaped structure is arranged, eddy current damping force is generated through the Lenz's law, mechanical energy is converted into heat energy, mechanical friction is not needed, and the maintenance cost is low; meanwhile, the hydraulic oil hinders the connecting rod from sliding through viscous resistance, and kinetic energy is further consumed.

The invention relates to a spatial topology efficient electromagnetic eddy current energy dissipation structure. The topological structure comprises a magnet, a first electromagnetic eddy current and a second electromagnetic eddy current, the damping plate is arranged below the magnet and comprises a first plate body and a second plate body which are stacked up and down, the first plate body is provided with a first embedding part, and the second plate body is provided with a second embedding part; and the first embedding part and the second embedding part can be embedded with each other, so that part of the first plate body is positioned on the surface, far away from the first plate body, of the second plate body. When the magnet moves along the surface of the damping plate, the magnetic induction line cuts the second plate body, induction current is generated in the second plate body, and the first plate body can strengthen damping force blocking movement of the magnet and improve energy consumption through the effect of the Lenz's law.