270 results about "Copper coil" patented technology

The invention relates to a cooling structure for an ultraprecise linear motor and belongs to the technical field of linear motors. The cooling structure solves the problem of proneness to heat exchange with environment caused by high side temperature of two-side surface-mounted cooling structures of existing linear motors. The cooling structure comprises a winding supporting portion, a winding and a heat conductive portion, wherein the winding is fixed on the surface of the winding supporting portion, the heat conductive portion is arranged on the surface on the outer side and fixedly connected with the winding supporting portion, the heat conductive portion is a copper foil ring which fits the outer profile of the winding and is sleeved and fixed on the surface on the outer side of the winding, or the heat conductive portion is a copper foil heat conductive ring formed by arraying multiple copper foil sections in a dispersed manner, the copper coil heat conductive ring fits the outer profile of the winding, and each copper coil section is fixed on the surface on the outer side of the winding. The cooling structure for the ultraprecise linear motor is suitable for cooling of linear motors.

The invention relates to an eddy current heating device for a thermoluminescence element and a heating method. The device comprises a heating disc, a copper coil assembly, a supporting frame, a temperature measuring sensor assembly and a control circuit, the heating disc is in a disc shape, and the copper coil assembly is composed of four multi-layer closely-wound fan-shaped copper coils which are arranged in four quadrant areas of the heating disc respectively; the temperature measuring sensor assembly is provided with four temperature sensors which are embedded into the bottom of the heating disc through heat-conducting glue and connected with the control circuit. The control circuit adopts a PID (Proportion Integration Differentiation) algorithm to independently adjust the current of each sector according to feedback signals of each temperature sensor, realizes rapid temperature rise and accurate temperature control through frequency adjustment and power compensation, and has an over-temperature protection function. According to the device, the temperature of the heating disc can be raised to 300 DEG C within 3 seconds, and the temperature deviation is controlled within + / -0.5 DEG C. Compared with traditional resistance heating, the device has the advantages of being fast in temperature rise, low in energy consumption, high in temperature uniformity, convenient to maintain and the like, and meets the high-precision temperature control requirement of thermoluminescence measuring and reading equipment.

A solid-state electronic miniature clock featuring a multi-layered silicon chip. A first circuit layer includes an electron paramagnetic resonance sensor, while the second layer comprises a silicon substrate with an etched trench housing single atom-doped fullerene molecules. Magnets are strategically placed on the silicon substrate and a third circuit layer to establish a baseline magnetic field. The chip incorporates through silicon vias (TSVs) filled with copper, forming a copper coil for enhanced antenna performance. Thermal management is achieved through vacuum cavities for isolation, strategically placed metals for heat generation, and thermo-electric materials, such as a bilayer of Bi$_2$Te$_3$ and Bi$_2$Se$_3$, for temperature regulation. A feedback loop monitors and adjusts the temperature, ensuring stability. Fabrication techniques include Deep Reactive Ion Etching (DRIE), electrochemical deposition, and photolithographic patterning, providing precise control over the chip's structure and functionality.

The invention discloses a graphene reinforced copper alloy bar and a preparation method thereof, and belongs to the technical field of copper alloys. The preparation method comprises the following steps: preparing a Cu-C master alloy bar; the first copper strip penetrates through a graphite box body, the surface of the first copper strip is covered with a layer of graphene, and the graphene on the surface layer is thinned and evenly coated through a polishing wheel; the treated first copper strip is wound on a Cu-C master alloy rod, sealing welding is conducted on the side face, the two ends are sealed and covered with copper materials, and a first copper roll is obtained; and the copper roll is subjected to equal-channel angular extrusion treatment, repeated extrusion and drawing are conducted, and the graphene reinforced copper alloy bar is obtained. According to the preparation method of the graphene reinforced copper alloy bar, graphene copper (Cu-C mother alloy) is put into a core part of a copper strip coil coated with graphene, then vacuum seal welding is carried out, equal-channel angular extrusion is utilized, so that the graphene can be uniformly distributed, the process is simplified, the efficiency is improved, and rapid mass production is realized at low cost.

The invention relates to the technical field of copper-aluminum composite cast rolling, and discloses a copper-aluminum composite cast rolling machine which comprises an aluminum smelting furnace, a cast rolling seat and a rolling device used for rolling plates, a casting nozzle is fixedly installed on the aluminum smelting furnace, a copper coil is rotatably installed on the cast rolling seat, and a heating plate used for preheating a copper plate is fixedly installed on the cast rolling seat. A plurality of upper rollers and a plurality of lower rollers are arranged in the cast rolling seat, the upper rollers correspond to the lower rollers in a one-to-one mode, the distance between the corresponding upper rollers and the lower rollers is gradually reduced, according to the copper-aluminum composite cast rolling machine, the upper rollers and the lower rollers drive the detection disc to rotate, and the balls bear centrifugal force and overcome the elastic force of the second springs to slide in the sliding grooves. And when the rotating speed of the detection disc is higher, the centrifugal force borne by the ball is larger, the force sensed by the centrifugal force sensing plate is larger, the corresponding water valve is controlled to introduce more cooling water into the water inlet pipe, the cooling water introduced into the upper roller and the lower roller with the smaller distance is larger, and excessive heat accumulation in the plate is prevented.

The utility model discloses a hydraulic cold-drawing machine for copper bar production, which belongs to the field of copper bar production equipment and comprises a support mechanism, a cold-drawing machine body mounted on the support mechanism, a feeding mechanism arranged on the front side of the top of the support mechanism, a guide mechanism mounted in the middle of the top of the support mechanism, and a positioning mechanism arranged in the guide mechanism. The guide mechanism comprises a mounting table, two guide rollers are rotationally mounted in the mounting table, and a drawing frame is slidably connected into the mounting table. The device has the beneficial effects that the guide mechanism and the positioning mechanism are arranged, due to the fact that in the copper bar production process, the diameter of a copper coil is smaller and smaller, the conveying direction is changed, and the forming effect is affected, the copper coil is guided by arranging the guide rollers and the positioning blocks, and the mold is always aligned with the two guide rollers; and the guide rollers play a good guiding role, so that the cold-drawing effect is ensured, and the production quality of the copper bar is improved.

The invention discloses a coil winding machine for current transformer production, and relates to the technical field of current transformer production. According to the coil winding machine for current transformer production, when winding operation is conducted on a winding roller, a pressing spring and a pressing roller are arranged, so that during winding operation, the pressing roller can press a copper wire, and the copper wire can be tightly pressed; the phenomenon that a copper wire is loosened on the winding roller can be prevented, when the number of windings reaches the needed number, the pressing roller moves upwards, the limiting block is moved out of the circular ring through cooperation of the bending block and the limiting block, limiting on the circular ring can be relieved, and due to the fact that the pushing spring is in a compressed state, the copper wire can be prevented from loosening on the winding roller. When the winding roller rotates, the circular ring pushes the rotating disc to move out of the protruding block, the protruding block does not continue to drive the rotating disc to rotate, the winding roller stops rotating, winding operation is not carried out any more, and the situation that winding operation continues, the number of copper coils on the winding roller exceeds the standard, an iron core of the current transformer is saturated, and normal work of the current transformer is affected is prevented.

The invention relates to the technical field of copper coil processing and production, in particular to a copper coil intelligent temperature control rolling treatment device and method.The copper coil intelligent temperature control rolling treatment device comprises a mounting frame, a discharging frame is arranged on the right portion of the mounting frame, a rotating roller is rotationally arranged on the left portion in the mounting frame, and two sliding blocks which are symmetrical front and back are arranged on the left portion of the mounting frame in a sliding mode; a pressing roller is rotationally connected between the sliding blocks, a temperature control mechanism is arranged on the mounting frame, and a dynamic adjusting mechanism is arranged on the mounting frame. The temperature of the copper coil is monitored in real time through the temperature control mechanism, the spraying state of cooling liquid is accurately adjusted in combination with the spraying assembly and the temperature control plate, it is ensured that the copper coil is always in a proper temperature range in the rolling process, and performance reduction or surface defects caused by overheating are avoided; the gap between the pressing roller and the rotating roller is automatically adjusted, the rolling requirements of copper coils with different thicknesses are met, uniform pressure distribution is ensured, and the product quality and the production efficiency are improved.

The invention relates to the technical field of winding packaging, and discloses an efficient coil winding device for inductor production, the efficient coil winding device comprises a winding machine main body and a shaping assembly arranged on the winding machine main body, the shaping assembly comprises sliding plates, first round rods and first clamping plates, the sliding plates are symmetrically connected to the interior of the winding machine main body in a sliding mode, and the first round rods are arranged on the first clamping plates; the first round rod is driven to be rotationally connected to the top of the sliding plate, and the top end of the first round rod is fixedly connected with a main rotating disc. In the process that the first clamping plate extrudes the inner wall of the magnetic core, the pushing distances of the magnetic cores with different diameters to the first clamping plate are different, and therefore the first clamping plate can be tightly attached to the inner wall of the magnetic core through the elastic force of the first spring when the first clamping plate shrinks at different distances. Therefore, the copper coil can be bent under the extrusion action of the first clamping plate after the magnetic core is put into equipment, and when the copper coil is wound on the outer wall of the magnetic core, the copper coil wound on the magnetic core is stable and does not slide, so that the copper coil is uniformly wound on the surface of the magnetic core.

The invention discloses an intelligent production scheduling method for a copper coil pipe coiling and drawing process. The intelligent production scheduling method comprises the following steps: step 1, converting a monthly order into a daily production order; 2, translating order specifications to obtain an order set; and step 3, scheduling production by using an intelligent algorithm, carrying out frame material division, batch distribution and machine scheduling, and arranging dynamic shutdown to reduce the power cost. According to the intelligent production scheduling method for the copper coil pipe coil drawing process, frame material process similarity clustering and multi-target optimization scheduling are introduced, automatic production scheduling of the copper coil pipe coil drawing process is achieved on the basis of order data, process parameters and equipment information, and therefore the production efficiency of the copper coil pipe coil drawing process is improved while it is guaranteed that an order production task is completed. The working efficiency of the disc drawing equipment is improved, and energy conservation and cost reduction are achieved while production scheduling is optimized.

The invention relates to the technical field of motion detection, and discloses a self-powered foot posture detection system which comprises an energy collector and an energy collection circuit used for detecting the energy collector. The electromagnetic energy collector comprises a shell, and a buffer assembly, a ball screw assembly, a ratchet wheel assembly and an electromagnetic assembly which are arranged in the shell, the electromagnetic assembly comprises a copper coil arranged in the magnet array; the copper coil is provided with a plurality of output ends; the buffering assembly is used for buffering vertically-downward pressure applied by the foot of the human body. The ball screw assembly is used for converting vertically downward pressure into lifting motion and driving the ratchet wheel assembly to rotate so as to drive a magnet array in the electromagnetic assembly to rotate. The energy acquisition circuit is used for acquiring and analyzing the peak value of the output voltage of the copper coil and the frequency of the output voltage to obtain different motion states and motion states of a human body; according to the invention, long-term and continuous monitoring of foot postures is realized, and the portability and usability of equipment are greatly improved.

The invention relates to a centrifugal forming device of a directional steel fiber concrete hollow pipe pile and a using method, the centrifugal forming device comprises a bottom plate and fixed supports, and a stainless steel threaded rod is rotatably mounted between the two fixed supports; a driven wheel is mounted at one end of the stainless steel threaded rod and connected with an output shaft of a rotary variable-speed motor through a synchronous belt and a driving wheel, and the rotary variable-speed motor is electrically connected with a frequency converter; the middle of the stainless steel threaded rod is sleeved with a PVC hollow pipe die, and the two ends of the PVC hollow pipe die are each sleeved with a ball bearing. A PVC hollow cylinder is fixedly connected between the two ball bearings; a copper coil is wound on the outer surface of the PVC hollow cylinder, and the two ends of the copper coil are electrically connected with a direct-current power supply; and fixing nuts are arranged on the stainless steel threaded rods on the outer sides of the PVC pipe caps to limit the mounting positions of the PVC hollow pipe molds on the stainless steel threaded rods. The problem that fiber orientation and distribution cannot be controlled in the centrifugal process of the steel fiber concrete pile in the prior art is solved.

The invention discloses a copper coil continuous feeding and stamping integrated feeding device in the technical field of copper coil feeding, which comprises a stamping workbench, a copper strip leveling assembly is mounted at one end of the stamping workbench, and an uncoiling feeding assembly is connected to one end, far away from the stamping workbench, of the copper strip leveling assembly; according to the scheme, the adjustable unwinding frame is matched with the radial expansion and contraction function of the first electric push rod, a roll core of the copper roll body can be stably clamped, the copper roll body can be stably clamped, and the copper roll body can be conveniently and rapidly unwound; according to the adjusting frame, through the threaded linkage relation between the first adjusting screw rod and the transmission base plate and the threaded linkage relation between the second adjusting screw rod and the transmission base plate, under driving of the second electric push rod, the distance between the two first stop levers can be flexibly set according to the width of the copper coil, and reliable axial limiting clamping can be formed on the two sides of the copper coil; by means of the structure, the risks of shaking, deflection and falling off of the copper coil caused by inertia disturbance in the active unwinding process can be effectively restrained.

The utility model relates to an automatic feeding device for a transformer copper coil, a lead screw is coupled in an outer shaft, a cylindrical sliding block in threaded connection with the lead screw is fixedly connected to an inner shaft, an expansion structure comprises a disc fixedly connected to the outer shaft and a plurality of arc-shaped plates arranged in the circumferential direction, the arc-shaped plates are connected to the disc in a sliding mode in the radial direction of the disc, and the arc-shaped plates are in threaded connection with the cylindrical sliding block. And the middle cylinder is fixedly connected with a guide structure for driving the arc-shaped plate to slide. When the copper coil expanding device is used, a copper coil is moved, the expanding structure is inserted into the copper coil, then the lead screw is driven to rotate, the cylindrical sliding block and the inner shaft are driven to move in the axial direction of the inner shaft, the inner shaft moves to drive the middle cylinder to move in the axial direction of the inner shaft, the arc-shaped plates are driven by the guide structure to move outwards, and the arc-shaped plates distributed in the circumferential direction support the copper coil. And then the outer shaft is driven to drive the expansion structure to rotate, the expansion structure drives the copper coil to rotate and uncoil, and the copper coil is supported through expansion of the expansion structure from inside to outside, so that feeding of the copper coil is facilitated, and the machining efficiency is guaranteed.

The utility model relates to the technical field of pipe penetrating supports, in particular to a pipe penetrating support for a paint removing and tin soldering integrated machine, which comprises a frame, a mounting table top mounted on the frame and a pipe penetrating support slidably mounted on the mounting table top. The pipe penetrating support comprises a bottom plate, side plates, a mounting seat and supports, the two side plates are fixedly arranged on the top edge of the bottom plate, mounting grooves are formed in the side plates, the two ends of the mounting seat penetrate through the mounting grooves, the supports penetrate through the mounting seat, an air cylinder used for driving the pipe penetrating support to move is mounted on the mounting table top, and the mounting seat is detachably connected with the side plates. According to the pipe penetrating support, the installation base is matched with the obliquely-installed supports, multiple sets of finished copper coils on paint removing and tin soldering equipment can be collected, manual work is replaced with automatic equipment, the collecting efficiency can be improved, the labor cost is reduced, and the pipe penetrating support is simple in structure and low in manufacturing and using cost.

The utility model discloses a fixed-length strip cutting machine, which relates to the technical field of medical instruments and comprises a working table, an N-shaped frame is fixedly connected to the top surface of the working table, an open slot is arranged on one side of the working table, a conveying and cutting mechanism is arranged below the N-shaped frame, and a pretreatment mechanism is arranged below the open slot. The conveying and cutting mechanism is arranged, copper screw tubes needed by contraceptive devices of different specifications are cut in a fixed-length mode through the fixed-distance adjusting assembly, then the copper screw tubes for the contraceptive devices are conveyed and cut through the conveying belt and the cutting assembly, and under the arrangement of the fixed carrier roller and the movable carrier roller, the copper screw tubes are cut in a fixed-length mode. Through the arrangement of the conveying mechanism, stable conveying of the copper solenoid for the contraceptive device is achieved, through the arrangement of a linkage switch and a travel switch, automatic control over the conveying and cutting process is achieved, through the pretreatment mechanism, centralized collection and disinfection and sterilization treatment of the cut copper solenoid are achieved, and safety and sanitation are guaranteed.

The utility model provides a copper coil placing table, and belongs to the technical field of copper coil placing equipment, the copper coil placing table comprises a support, the support is of a rectangular frame structure, convex bases are arranged at the four corners of the support, a rotating shaft is arranged between two convex bases, and rotating assemblies are arranged at the two ends of the rotating shaft respectively; and the supporting table is arranged on the support, one end of the supporting table is connected with the rotating shaft, the other end of the supporting table is in lap joint with the support, an unwinding table is rotationally arranged in the center of the top face of the supporting table, and a set of supporting plates with adjustable intervals are symmetrically arranged on the unwinding table and used for supporting a roll core of a copper roll. By using the scheme provided by the device, the copper coil can be conveniently put into the unwinding table in a labor-saving manner, the connection with hoisting equipment can be conveniently released, and meanwhile, the side edge of the copper coil is prevented from being extruded and deformed.

The application provides a forming and assembling method of an ultralow-frequency kicker model cavity, and aims at solving the technical problems that a large-diameter copper pipe cannot be directly wound outside an insulating support body made of polytetrafluoroethylene material by a high-temperature heating method, and a large-diameter copper coil cannot be accurately inserted into a slot during forming and assembling of an existing ultralow-frequency kicker model cavity. The application first completes preparation of the large-diameter copper coil by means of a tool, and then sequentially inserts the insulating support body designed as a split structure into the large-diameter copper coil. Meanwhile, the large-diameter copper coil is fixed on the insulating support body by a clamp, the resilience of the large-diameter copper coil is effectively controlled, accurate nesting and fixing of the insulating support body and the large-diameter copper coil are realized, and the accuracy of the resonance frequency of the ultralow-frequency kicker model cavity is ensured. The forming and assembling method of the ultralow-frequency kicker model cavity is convenient, has high reliability, and can accurately realize the target frequency of the ultralow-frequency kicker model cavity.

The utility model provides a single-turn coil motor principle demonstrator, which comprises an iron bottom plate, the upper surface of the iron bottom plate is fixedly connected with a fixing frame, the top end of the fixing frame is rotatably provided with a rotating hand wheel, the middle part of the fixing frame is provided with a rotatable stator magnet frame, and the rotatable stator magnet frame is provided with a strong magnet. A commutator is rotationally installed in the middle of the iron bottom plate, a single-turn coil rotor shaft is axially installed on the commutator, a single-turn copper coil is arranged on the single-turn coil rotor shaft, a current direction indicating circuit board is installed at the bottom end of the single-turn copper coil, and a copper electric brush is installed between the current direction indicating circuit board and the commutator. The input and output terminal and the red and green LED lamp are respectively arranged on two sides of the edge of the upper surface of the iron bottom plate; the demonstrator adopts a vertical tip structure, is small in friction force, flexible in rotation, obvious in demonstration effect, smaller in friction force and smoother in rotation due to the design of the rotating circuit board and the indication of the current direction of the single-turn copper coil by the red and green indication lamps, and the rotating part adopts the single-side bearing.

The embodiment of the application provides a kind of mixed inductive proximity sensor based on semiconductor process and its manufacturing method, mixed inductive proximity sensor includes: planar induction coil and electronic chip, planar induction coil is the copper coil structure formed on substrate by photoetching and plating process, planar induction coil is integrated with multiple concentric ring sub-coil, and multiple concentric ring sub-coil is used to measure the magnetic field gradient change caused by target object in section;Electronic chip is integrated with oscillator circuit, and oscillator circuit includes inductance branch with series positive and negative temperature coefficient resistance combination, capacitor branch with parallel adjustable resistance, and comparator unit with dynamic adjustment delay;The packaging structure of mixed inductive proximity sensor includes the substrate of electronic chip flip-chip interconnection through carrier plate, surface covers protective layer;The packaging pre-treatment of mixed inductive proximity sensor includes pad microprocessing, gas protection reflow soldering and composite glue buffer layer.

The utility model discloses a wireless charging receiver which comprises a wireless charging receiver body, a receiving coil is integrated in the wireless charging receiver body, and a magnetic attraction ring is arranged on the outer side of the receiving coil. According to the utility model, the wireless charging base can be used for charging the electronic equipment, so that the charging function which the electronic equipment does not have is well made up, and the electronic equipment without the wireless charging function can be wirelessly charged by using the wireless charging base through the product; and moreover, electronic equipment supporting quick charging can be quickly charged, and the copper coil is used as a power inductor, so that the product is thinned.

The utility model discloses a sound fish luring device capable of being used in deep water. The device comprises a floating body, a hydrophone and a low-frequency transmitting transducer, wherein the hydrophone and the low-frequency transmitting transducer are connected with the floating body through cables; a power supply, a memory and the like are arranged in the floating body. The hydrophone collects fish ingestion sound and stores the fish ingestion sound in the memory, and the fish ingestion sound is transmitted out by the low-frequency transmitting transducer to lure fish after being processed by the signal output module and the power amplifier. The low-frequency transmitting transducer is provided with a shell, a telescopic air bag and a vibrating membrane; the air bag and the vibration cabin balance internal pressure and external pressure through an air guide pipe, a copper coil is wound outside a vibration membrane extension cavity and matched with a permanent magnet to generate a magnetic field to enable the vibration membrane to produce sound, and the frequency band of 10 Hz to 3 kHz can be covered. The device has a recording mode and a playing mode, is connected and controlled through mobile phone APP Bluetooth, can accurately trap different fishes, improves the fishery yield, has automatic pressure compensation to adapt to deep water, realizes small size and low cost through a single array element, has the sounding frequency far better than that of a traditional underwater horn, and has remarkable advantages.

The invention relates to the field of PCB manufacturing, in particular to a heat dissipation type thick copper PCB preparation method for a high-power coil, and the method comprises the following steps: S1, modifying original high-thermal-conductivity fibers to obtain surface modified high-thermal-conductivity fibers; s2, mixing the surface-modified high-thermal-conductivity fibers with a resin glue solution, and performing impregnation and drying to obtain a composite prepreg; s3, forming a thick copper coil circuit on the insulating base material through an etching process; s4, performing press fit treatment to obtain a PCB semi-finished product with a high-thermal-conductivity fiber layer embedded in the middle; s5, performing drilling processing on the PCB semi-finished product obtained in the S4; s6, appearance plate milling is conducted, and a metal edge covering layer is manufactured in an edge covering area; and S7, post-processing is carried out on the PCB after metal edge covering in the step S6. According to the invention, by constructing the three-dimensional heat dissipation network composed of the high heat conduction fiber layer, the heat conduction through holes and the plate edge metal edge covering layer, efficient heat dissipation of the thick copper coil plate is realized under the condition that an external fan is not needed.

The utility model provides a bus bar self-checking spot ironing mechanism which comprises a back plate, an electromagnetic spot ironing machine is arranged on the upper portion of one side of the back plate, a first-level buffering assembly is arranged on the lower portion of one side of the back plate, a second-level buffering assembly is arranged on the other side of the back plate, and a copper coil welding head of the electromagnetic spot ironing machine is connected with a ceramic pressing head arranged on the first-level buffering assembly in a sleeved mode. And a limiting screw for preventing the copper welding head from being in contact with the to-be-welded product is arranged on the first-stage buffer assembly. The spot-ironing mechanism has the advantages that the bus bar and the EVA adhesive film are connected through non-contact spot-ironing, the spot-ironing mechanism combines the first-stage buffer assembly and the second-stage buffer assembly, the spot-ironing effect is better guaranteed, and the yield of final products is higher.

The invention discloses a multi-joint hybrid nano-generator, which comprises a multi-joint reciprocating friction nano-generator and a radial fluctuating electromagnetic generator, and the multi-joint reciprocating friction nano-generator and the radial fluctuating electromagnetic generator are connected through a multi-joint connecting rod. The multi-joint reciprocating friction nanometer generator comprises a shell, a sliding rod and a sliding groove which are arranged at the bottom of the shell, a packaging cover arranged at the top of the shell and multiple layers of TENG units connected in parallel, the TENG units are arranged in the shell, and the sliding rod slides along the sliding groove; the radial fluctuating electromagnetic generator comprises a fixed rod, a copper coil wound on the fixed rod and a magnet fixed on the multi-joint connecting rod, and the fixed rod is arranged on the packaging cover. According to the multi-joint hybrid nano generator provided by the invention, the contact frequency of the friction layer is improved, and the silica gel / zinc sulfide and glass fiber friction layer is matched, so that the output of the friction nano generator is greatly improved, and the wave energy is efficiently collected.

The utility model discloses a portable power generation device, a mobile power supply and a travelling bag, and belongs to the technical field of traffic safety management and control. The device comprises a shell, a power generation assembly and a power supply assembly are arranged in the shell, the power supply assembly comprises a capacitor, a battery pack and a rectifier, the battery pack is arranged on the side edge of the power generation assembly, and the rectifier is installed above the power generation assembly; the power generation assembly comprises a fixed seat with a central through hole, a copper coil wound on the fixed seat and a strong magnetic block capable of moving along the central through hole, at least two stop bulges are arranged on the outer surface of the circumference of the strong magnetic block in a staggered manner, and stop flanges are arranged on the edges of the two ends corresponding to the central through hole; through the matching of the stop bulge and the stop flange, the moving position of the strong magnetic block in the central through hole can be limited; the battery pack is electrically connected to one end of the rectifier, and the copper coil is electrically connected to the other end of the rectifier.

The invention provides a subway train damping device based on piezoelectric effect vibration energy storage, and relates to the technical field of subway train damping, an elastic connecting piece is composed of a bracket, a limiting rod and a first spring, and a wheel carrier and a wheel are elastically connected; shock absorption is conducted between the wheel carrier and a train through the piezoelectric modules, the air bag assemblies and the air bag buffering pieces, so that shock between the train and the wheels is reduced through the shock absorption mechanisms, meanwhile, the buffering sleeves installed at the two ends of the wheel carrier are matched with the metal rods, and the purpose of shock absorption between the wheel carrier and the train is achieved; the magnet columns fixed in the grooves formed in the lower ends of the metal rods are located in the two sets of reversely-arranged copper coils, and the copper coils are installed in the cavities of the buffer sleeves, so that when the magnet columns move in the copper coils, due to the fact that magnetic substances are subjected to resistance in the powered-on spiral coils, the magnetic substances are prevented from falling off; and the metal rods and the buffering sleeves are matched to achieve buffering of the side supporting plates, damping of the train is achieved in an active damping mode, and the damping effect of the train is improved.

The present invention discloses a high-frequency small transformer with an external heat dissipation structure, which includes a transformer body, a heat conduction seat, a mounting seat, and a connection cover; a connecting plate is horizontally arranged at the bottom of the transformer body, the mounting seat is detachably horizontally arranged at the bottom of the connecting plate, heat conduction seats are vertically arranged on the upper surface of the connecting plate and on both sides of the transformer body, and a connection cover is detachably arranged at the top of the transformer body. The present invention relates to the technical field of transformers. This high-frequency small transformer with an external heat dissipation structure, by setting the heat conduction seat, after the transformer body is assembled with the mounting seat, then the heat conduction seat fits the copper coil of the transformer body, so that the heat generated by the transformer body is introduced to the heat conduction block for heat dissipation, and the heat dissipation holes inside the connection cover are used to make the transformer body have a self-heat dissipation function while being able to conduct heat, increasing the heat dissipation area and improving the heat dissipation efficiency.

The utility model relates to the technical field of paint stripping machine, concretely relates to a kind of end cutting assembly for four-side paint stripping machine, including frame, the cutting mechanism for being located in frame and being used to cut off copper coil end, the cylinder for being used to drive cutting mechanism lifting and being installed on frame, the pressing mechanism for being used to press and fix copper coil and being installed in one side of frame, the base for being installed in frame and cooperating cutting mechanism, pressing mechanism operation;This kind of end cutting assembly for four-side paint stripping machine cooperates through pressing mechanism and cutting mechanism, realizes the efficient, stable cutting of copper coil paint stripping end, the cooperation of clamping piece a and clamping piece b can firmly fix copper coil, prevent displacement when cutting, ensure cutting accuracy;Cylinder drives tool holder and cutting tool to descend along guide pillar, action is stable, powerful, guarantee cutting quality, and the setting of copper sleeve can reduce friction, prolong service life.

The mouse pad with the wireless charging function comprises a mouse pad body and a power supply assembly, the mouse pad body is composed of an upper layer, a middle layer and a lower layer, an installation groove is formed in the surface of the lower layer, a copper coil used for wireless charging is installed in the installation groove, and the power supply assembly is connected with the power supply assembly. The middle layer is laid and installed in the installation groove and located on the top of the copper coil, the lower layer is made of silica gel and integrally formed in a mold, the middle layer and the upper layer are mylar pieces, and the upper layer, the middle layer and the lower layer are integrally formed in a hot pressing mode. When the mouse pad is used, the copper coil is directly placed on the lower layer in a mold, then the middle layer and the upper layer are laid on the top of the copper coil, and then the mouse pad is integrally formed in a hot pressing mode, so that the mouse pad can be formed in the mold through the mode; in addition, the surface of the mouse pad body is flush through the existence of the mounting groove and a hot pressing mode, and sliding of the mouse is facilitated.