5519 results about "Electromagnet" patented technology

The invention provides a multi-dimensional supporting leg structure for lightweight steel ring splicing equipment, and relates to the field of tunnel engineering. The mounting base is fixedly connected with the frame, the telescopic driving mechanism is arranged between the mounting base and the supporting leg assembly, the angle adjusting mechanism is arranged between the cylinder barrel and the mounting base, and the self-locking mechanism is used for locking the cylinder barrel and the piston rod when the driving unit fails. The telescopic driving mechanism is composed of a cylinder barrel, a piston rod and a driving unit, the angle adjusting mechanism is driven through a first rotating shaft and a second rotating shaft which are perpendicular to each other and corresponding rotation, so that the cylinder barrel achieves double-shaft swing adjustment, the self-locking mechanism is composed of a locking rack, a movable tooth claw, a reset spring, an electromagnet and a permanent magnet, and power-on unlocking and power-off self-locking are achieved. According to the structure, the supporting polygon is obviously enlarged under the complex basic condition, the anti-overturning stability of equipment is improved, reliable supporting is kept when a hydraulic system fails, and the safety and adaptability of steel ring splicing operation in a tunnel are improved.

The invention discloses an elevator steel wire rope detection device and method, and the device comprises the following steps: firstly, carrying out the pre-scanning of an initial magnetic field, then carrying out the magnetization of a steel wire rope through a multi-stage adjustable electromagnet, and controlling the magnetization intensity through a current; the method comprises the following steps: firstly, pre-scanning a magnetic field, then, carrying out real-time monitoring and feedback control on the magnetized magnetic field, carrying out synchronous acquisition through a multi-modal sensor, then, extracting multi-domain features, receiving a feature vector set by a model, carrying out dynamic weighting operation on the feature vector set, and finally, outputting a task. The problem that initial magnetic fields of the steel wire ropes are inconsistent can be effectively solved, data are synchronously collected through the multi-mode sensor, effective distinguishing and quantitative evaluation of different types of defects such as wire breakage, abrasion, corrosion and fatigue damage are achieved, and the defects of an existing detection mode in defect subdivision and quantification are overcome.

The invention discloses a medical cleaning machine water inlet rapid butt joint device convenient to disinfect and maintain, and relates to the field of butt joint devices. According to the medical cleaning machine water inlet rapid butt joint device convenient to disinfect and maintain, the female head pipeline and the male head pipeline which can be separated are arranged, an electromagnet and a permanent magnet which are controlled by a controller are correspondingly arranged on the butt joint part base and the male head butt joint base, and detection feedback of a Hall sensor and a pressure sensor is combined; automation and intelligentization of the water inlet pipeline butt joint process are achieved, the device can automatically sense approaching of a male head and start magnetic force to guide adsorption, and preliminary alignment is completed; and according to the sealing pressing force fed back by the pressure sensor, the electromagnet is intelligently controlled to be switched to a strong magnetic force locking mode, so that on the premise that reliable connection sealing is ensured, rapid, accurate and force-controlled butt joint and separation are achieved, and the problems that a traditional mode is tedious in operation and poor in connection reliability are effectively solved.

The utility model belongs to the technical field of electromagnet coils, particularly relates to a magnetic suspension electromagnet coil, and aims to solve the problems that a coil with a large number of turns can generate a strong magnetic field under the same current, so that the coil with a large number of turns can be adopted to generate a strong and stable magnetic field, but the large number of turns can cause some problems. In order to solve the problems that the energy loss is further increased and even the coil is possibly damaged due to the fact that the resistance of the coil is increased and heating is increased, the utility model provides the following scheme: the coil comprises a hollow framework, a plurality of turns of coils are wound on the hollow framework, and a protective sleeve is wound on the whole outer wall of the plurality of turns of coils; and the outer wall of a single copper wire of the multi-turn coil is covered and sprayed with an insulating layer. When the magnetic suspension electromagnet coil is used, through the design of the protective sleeve, the ceramic insulating coating, the heat dissipation fins, the heat extraction fan, the heat dissipation holes and the like which are made of polyimide film materials, the heat dissipation efficiency and durability of the coil are effectively improved, and stable operation of a magnetic suspension electromagnet is ensured.

The invention provides a tool applied to the field of petroleum drilling, and particularly relates to an electrically-controlled reducing cutter, which has the technical scheme that the extension and retraction of the cutter are accurately controlled by a control base driving motor and an electromagnet, wherein the control base driving motor comprises an MCU (Microprogrammed Control Unit) and a wireless communication module; the control base can receive a ground instruction and transmit an underground working state signal back in real time; meanwhile, the ratchet mechanism is matched with the electromagnet to achieve extending and retracting of the cutter position, and the pawl is always in close contact with the ratchet wheel under the action of the spring. And the lower shell is in threaded connection with the guide shoe. The cutting knife is driven to rotate through the transmission shaft, the cutting knife is controlled to stretch out and retract through the intelligent electric control system, continuous cutting of casing pipes with different pipe diameters can be achieved, the tripping frequency is reduced, and the casing pipe cutting efficiency in the well abandoning operation process is greatly improved.

According to the library book sorting device and the control method thereof, when books are taken out, the tops of the books are pulled out to be inclined through a book pulling device, then the books are clamped from the two sides through a book clamping device to be completely taken out, and when the books are pulled out, a control system controls the cut-off position of a cut-off distribution device on a magnetorheological fluid storage sleeve according to the thickness of the books; the flow of the magnetorheological fluid entering the book raking sleeve is adjusted, then the size of the book raking sleeve and the contact area of the book raking sleeve and the book are adjusted, meanwhile, the electrifying strength of the electromagnet is controlled, then the hardness of the magnetorheological fluid in the book raking sleeve is adjusted till the book raking sleeve can be completely attached to the book, and the book raking sleeve can be suitable for raking the thick and heavy book and can also be used for raking the book. And no extrusion stress is generated on the books, so that the books are prevented from being extruded, deformed or scratched and abraded, and nondestructive book taking and sorting are realized.

The invention discloses an adjustable automatic feeder base, and relates to the technical field of feeder bases. Comprising a supporting base part, an adjusting piece is installed on the supporting base part, and the adjusting piece is used for being installed at the bottom of an automatic feeder frame through bolts; a detection adapter is mounted on the adjusting piece; a belt attaching part is mounted on the detection adapter; the belt laminating piece is used for laminating a belt of the automatic feeder; the belt attaching wheel can be attached to a belt to roll, an extrusion delay switch is automatically controlled, real-time detection can be achieved when the automatic feeder is kept in the running state, and a positioning electromagnet is controlled to magnetically attract and attach to the bottom of a wrench butt joint plate to conduct limiting work. The adjustable automatic feeder base solves the problem that an existing adjustable automatic feeder base is inconvenient to automatically limit shutdown operation and adjustment.

The utility model relates to the technical field of mechanical arms, in particular to a mechanical arm tail end tool quick-changing device which comprises a main disc, a sinking groove is formed in the main disc, an electromagnet is installed at the circle center of the top of the sinking groove, an inserting sleeve is arranged at the bottom of the main disc, and a top plate is fixedly arranged on the upper side in the inserting sleeve. A supporting rod capable of sliding up and down penetrates through the circle center in the top plate, two sets of spring bolt grooves are symmetrically formed in the annular face of a supporting rod inserting sleeve, slidable spring bolt plates are arranged in the two sets of spring bolt grooves, a bottom plate is fixedly arranged in the inserting sleeve, and connecting rods are arranged between the spring bolt plates and the supporting rod. The tool disc is arranged on the lower side of the main disc, an annular base is arranged in the tool disc, and an annular groove matched with the spring bolt plate is formed in the inner side face of the annular base. The electromagnet is adopted as a power source, additional air pipes and matched mechanisms are not needed, the structure of the device is greatly simplified, and the production cost is reduced. And meanwhile, gas source related components are removed, the external space of the mechanical arm is saved, and the flexibility and applicability of the mechanical arm are improved.

A chess-like piece positioning and recognition system, including: an MCU, an RFID module, multi-channel analog switches, an electromagnet and communication signal switch unit, an electromagnetic drive unit, antennas, silicon steel blocks, and pieces. The MCU is used for communication with the RFID module, selecting channels of the multi-channel analog switches, and electromagnet and communication signal switch selection. The RFID module is used for reading information from the pieces. The multi-channel analog switches are used for group gating and intra-group channel gating of the RF channels. The electromagnet and communication signal switch unit is used for switching between the electromagnetic drive unit and the RF channels. The electromagnetic drive unit is used for driving an electromagnet. The antenna is used for sending and receiving signals from the pieces and also serves as the coil for the electromagnet. The silicon steel block is used as the core of the electromagnet, which generates a magnetic attraction to the pieces after being magnetized.

The utility model discloses an accessory, relates to the technical field of AVG forklifts, and aims to solve the problems that in the prior art, related clamping accessories or other machines are adopted by the AVG forklifts, the design is complex, a vehicle body is greatly influenced, the structural weight of the whole vehicle and the structure of the accessories are influenced, and meanwhile application scenes are easily limited. The AVG forklift body comprises a main support, two plug pins are fixedly connected to one side of the main support, first electromagnets are arranged on the upper surfaces of the two plug pins, second electromagnets are arranged at the ends, close to the main support, of the plug pins, and the first electromagnets and the second electromagnets are installed in a submerged mode; the AVG forklift body comprises a driving main machine, a traveling system used for traveling, a hydraulic system used for lifting and an electric power system used for supplying power are arranged in the driving main machine, a radar range finder is arranged below the driving main machine, and an anti-collision head is arranged at one end of each pin.

The invention relates to the technical field of suspension conveying systems, in particular to a servo-driven intelligent suspension conveying system, and solves the problems that when a servo motor suspension conveying system accelerates or decelerates, due to inertia of goods at the bottom, the power output power of a suspension system of a servo motor and the burden of a brake system are heavy, and the service life is short. And the service life of a servo motor and a brake system is shortened after long-time work. A servo-driven intelligent suspension conveying system comprises a conveying guide rail module, a guide rail sliding block, a sliding block driving module, a conveying suspension module and a control module, and the sliding block driving module is located on the outer side of the guide rail sliding block. When the guide rail sliding block is started, magnetic repulsion of the electromagnet to the guide rail sliding block is adjusted, the output torque of the double-shaft servo motor and the rotating load of the driving shaft are reduced, the situation that the double-shaft servo motor is damaged or breaks down due to high torque and high load when the double-shaft servo motor is started is avoided, and the service life of the double-shaft servo motor is prolonged.

The invention discloses a confidence embedded model predictive control method, a medium and equipment, and belongs to the technical field of suspension control. According to the method, a kinetic equation of a suspension system is established, a data-mechanism dual-drive uncertainty quantification method is adopted, original operation data of a maglev train and suspension state information measured on line are utilized, and dynamic characteristic learning modeling is conducted on the suspension system under the constraint of the kinetic equation; state quantity distribution of suspension air gaps, vertical speed, electromagnet current and the like at future moments is predicted, and prediction mean values and prediction standard deviations of corresponding states are obtained. In model prediction control optimization, a nominal trajectory of the suspension system is constructed by a predicted state mean value, and a penalty term proportional to prediction uncertainty is added into a cost function; meanwhile, confidence coefficient constraint is constructed based on the predicted standard deviation, and dynamic constraint tightening of key physical quantities such as suspension air gaps, vertical speed and coil current is achieved. According to the invention, real-time sensing and self-adaptive closed-loop control of the operation risk of the suspension system are realized.

The invention discloses an electromagnet electromagnetic ultrasonic thickness measurement method and system based on an anti-collision unmanned aerial vehicle, and relates to the field of nondestructive testing, and the method comprises the steps: obtaining the coordinates of a preset detection point, controlling the flight path of the unmanned aerial vehicle, and determining the safety position information of the unmanned aerial vehicle located near the preset detection point; the motion of the multi-degree-of-freedom mechanical arm is controlled through a servo motor and an encoder, contact impact is reduced through a buffer mechanism, and attitude information of the electromagnetic ultrasonic sensor unit aligned with the surface of the to-be-detected object is determined; the magnetic attraction force is adjusted in real time through a closed-loop feedback system, and a linear frequency modulation pulse is adopted as an excitation signal to obtain an echo signal containing acoustic-electromagnetic coupling interference; acoustic-electromagnetic coupling interference is corrected and processed in an auxiliary mode through a multi-mode signal separation algorithm and machine learning, and final thickness data is obtained; and transmitting the final thickness data to a cloud platform, and providing a data visualization interface and an alarm function on the cloud platform. According to the invention, accurate thickness detection and remote monitoring of a complex structure material can be realized.

The invention discloses a high-temperature-resistant and high-pressure-resistant autonomous deep well pressure maintaining sampler, and belongs to the technical field of drilling engineering sampling. The sampler comprises an upper joint, a control outer pipe, an end cover, a valve body and a liquid storage chamber which are connected in sequence, an electromagnet is arranged on the outer side of the end cover; an electric control module is arranged in the control outer pipe; a valve element with a permanent magnet is arranged in the valve body in a sliding mode, the valve element is driven to move axially through non-contact electromagnetic force between the electromagnet and the permanent magnet, and opening and closing of the sampling flow channel are achieved. The bottom of the valve core is provided with a valve core inner channel communicated with the sampling flow channel and the liquid storage chamber and a one-way valve; a sampling inlet channel is formed in the joint of the end cover and the valve body. According to the invention, a pure mechanical sealing-based structure is adopted, so that the sealing reliability and the operation stability in a high-temperature and high-pressure environment of a deep well are remarkably improved, drilling fluid is not needed, and efficient and pressure-maintaining sampling of in-situ formation fluid is realized.

The high-power servo drive cabinet comprises a cabinet body, a bottom air inlet hole is formed in the bottom of the cabinet body, a bottom dustproof net is arranged in the bottom air inlet hole, a top air outlet hole is formed in the top of the cabinet body, and a centrifugal fan is arranged in the top air outlet hole; the device comprises two cooling supporting mechanisms, a switch controller and a servo driver, a plurality of mounting brackets are arranged at the tops of the two cooling supporting mechanisms, and the switch controller and the servo driver are mounted at the tops of the cooling supporting mechanisms through the mounting brackets; and the isolation plate is fixedly installed in the cabinet body, and four electromagnets are arranged on the isolation plate. According to the device, gas-liquid cooperative heat dissipation is adopted, the centrifugal fan and the S-shaped cooling pipe are arranged in an orthogonal mode, the heat dissipation efficiency is improved, the modular drawing design is adopted, the sliding rail and the electromagnetic lock are rapidly disassembled and assembled, the maintenance time is shortened, the high-sealing connector is adopted, the arc-shaped electromagnetic adsorption connector and a two-stage dustproof structure are adopted, and the dustproof effect is improved.

The invention relates to an experimental falling ball impact device which comprises a base and a lifting mechanism, the lifting mechanism comprises a lifting platform, a synchronous belt and a lifting servo motor, a transmission shaft of the lifting servo motor is in transmission connection with the synchronous belt, and the lifting platform is fixedly connected with the synchronous belt. The lifting platform is provided with an infrared distance sensor and a horizontal transverse mechanism, the lifting servo motor controls the lifting platform to move up and down, symmetrical intercepting mechanisms are arranged on baffles on the two sides of the base, and the horizontal transverse mechanism is located below the lifting platform. The horizontal transverse mechanism is provided with an X-direction servo motor, a Y-direction servo motor, an electromagnet and a laser drop point indicator, and the transverse mechanism is used for moving the electromagnet in the X direction and the Y direction. According to the device, the falling ball position and the falling ball height can be automatically adjusted, secondary falling balls can be intercepted, it is avoided that secondary impact influences experiment data, and the accuracy of the experiment data is guaranteed.

The invention discloses a stepless magnetic control system for an intelligent crown block, which belongs to the technical field of electromagnetic control, and comprises a vibration signal acquisition module for acquiring an iron core micro-vibration signal of an electromagnet iron core; the dynamic flux linkage compensation module generates a magnetic flux compensation signal; the inertia trend prediction module generates load inertia change trend information; the multi-dimensional attitude sensing module obtains inclination angle data and tension data; the space-time collaborative decision control module performs space-time weighted fusion on the magnetic flux compensation signal, the load inertia change trend information, the inclination angle data and the tension data to generate collaborative control parameters; the instruction generation module analyzes the cooperative control parameters to generate a magnetic field intensity adjustment instruction; and the cooperative execution module executes the magnetic field intensity adjustment instruction to cooperatively adjust the electromagnetic force. A control strategy of multi-dimensional sensing data fusion and space-time collaborative decision is adopted, magnetic field fluctuation can be effectively compensated, and load swing is actively inhibited.

The invention discloses a milling machine for TF coil box AU assembly milling, a machining clamp and a machining method, and relates to the technical field of TF coil box AU assembly milling, and the milling machine comprises a working platform, a gantry type frame, a cross beam sliding plate, a milling spindle box, a milling cutter and a machine body base. According to the milling machine for TF coil box AU assembly milling, the machining clamp and the machining method, the special clamp is designed, centering positioning of a workpiece can be automatically completed, meanwhile, stable clamping of the two sides of the workpiece and self-adaptive adjustment of the clamping force are achieved, workpiece deformation or machining loosening is avoided, the lifting mechanism, the first pushing assembly and the second pushing assembly act synergistically, and the machining precision is improved. By the aid of an electromagnet disc adsorption turnover structure driven by a motor, workpiece turnover can be completed without manual disassembly, the workpiece can be quickly reset to an initial reference surface after turnover, secondary positioning errors are avoided, operation procedures are greatly simplified, procedures such as positioning, clamping and turnover are smoothly linked, manual intervention is reduced, and machining cycle is effectively shortened.

The bearing and transferring structure based on steel structure machining comprises a moving assembly, a hydraulic cylinder is fixed to the top of the moving assembly, a mounting piece is fixed to the output end of the hydraulic cylinder, elastic telescopic mechanisms are mounted on the two sides of the mounting piece correspondingly, and the two elastic telescopic mechanisms are used for bearing I-shaped steel; a second conducting strip electrically connected with the elastic telescopic mechanism is installed at the bottom of the elastic telescopic mechanism, a connecting arm is fixed to the bottom of the moving assembly, and a first conducting strip used in cooperation with the second conducting strip is installed on the inner wall of the bottom of the connecting arm. The mounting part and the elastic telescopic mechanism are driven by the hydraulic cylinder to move up and down, power-on and power-off of the electromagnet are controlled by combining on-off of the first conducting strip and the second conducting strip, and automatic stretching and retracting of the elastic telescopic mechanism are achieved. When I-shaped steel is transferred, the clamping pieces can automatically complete the actions such as contraction avoiding and reset clamping only by controlling the hydraulic cylinder and the circuit to be switched on and switched off, and the distance between the two clamping pieces can be flexibly adjusted through the design of the elastic telescopic mechanism.

The invention discloses a protective device for safety of mining machinery, and relates to the technical field of mining equipment, in particular to a protective device for safety of mining machinery, which comprises a base, a rotating frame, a protective component and a supporting component, and a plurality of iron chisels used for being inserted underground are fixedly mounted on the lower surface of the base; the lower end of the rotating frame is hinged to one end of the base; and through the combination of multi-stage damping and elastic buffering, the absorption capacity to large impact force is greatly improved. When the impact force continuously acts to cause the first piston plate to move to a set distance, the distance sensor transmits a signal to the control panel, and the control panel starts the electromagnet, so that the magnetic particles in the magnetorheological fluid are orderly arranged in a solid-like state, the position of the piston assembly is locked, excessive rotation of the rotating frame is avoided, and the service life of the rotating frame is prolonged. Compared with a locking block clamping structure of an existing device, the locking block clamping structure has higher fixing reliability, the situation that the structure loses efficacy due to continuous impact is effectively prevented, and safety of mining machinery is guaranteed.

The controllable floating electromagnetic capturing mechanism comprises an electromagnet, a separating device, a connecting rod floating device, a non-contact switch device, a lead screw, a lead screw nut, a guide rod, a linear bearing, a guide rod fixing block, a large gear, a small gear, a motor, an upper shell, a middle shell, a lower shell and a visual camera. The connecting rod floating device comprises a base, an outer connecting rod, an inner connecting rod, a ball rod, an adaptive block, an adaptive rod, a pre-tightening sliding block, a pre-tightening spring, a floating spring and a control sliding block; the separating device comprises a retaining spring, a separating sleeve, a separating shell, a separating plug, a separating rod and a separating spring; the separating device comprises a retaining spring, a separating sleeve, a separating shell, a separating plug, a separating rod and a separating spring; the motor drives the lead screw to rotate through the small gear and the large gear, the control sliding block of the connecting rod floating device is controlled to ascend and descend, and the floating and locking states of the electromagnet are changed.

Two ends of a flexible pipe are fixedly connected to a grip and a magnetic guide ring respectively, an electromagnet is fixedly mounted in the magnetic guide ring, a rubidium magnet is connected to the outer end of the magnetic guide ring in a threaded fit manner, a through hole is formed in the magnetic guide ring, and one end of an air pipe is communicated and connected to the through hole; the magnetic attraction mode can be selected according to the type of metal, when large-size metal needs to be picked up, only the rubidium magnet needs to be installed on the magnetic guide ring, the metal can be attracted to the rubidium magnet, and cleaning and collecting are convenient; when some metal chips are cleaned, the electromagnet brings magnetic force to the magnetic guide ring, so that the metal chips are adsorbed on the magnetic guide ring; during discharging, only the electromagnet needs to be closed, the magnetic force of the magnetic guide ring disappears, the chippings can fall off, in order to prevent the chippings from being attached to the interior of the magnetic guide ring, the chippings can be blown out of the magnetic guide ring by blowing air into the air pipe, and follow-up use is facilitated.

A tracking and steering system for medical devices comprises a magnetic element attached to a distal portion of the medical device, a sensor on the patient's external surface detecting the magnetic field strength of the medical device's magnetic element, and a steering magnet on the patient's external surface with an electromagnet attracting the medical device's magnetic element. A console with memory and processors receives sensor data to determine the medical device's distal tip position and controls the sensor and steering magnet activation. A display shows an image of the patient with an icon indicating the medical device's location relative to the patient, enhancing medical procedures with real-time tracking and steering capabilities.

The application discloses a bending machine for metal processing, which comprises a machine body, a bending cutter head and a mounting block arranged on the machine body, two supporting blocks arranged on the mounting block, a shell fixedly installed on the machine body, and an electromagnet arranged on the shell; a guide block, a mounting cavity formed in the shell, a fixed plate fixedly installed in the mounting cavity, the guide block being tightly connected with the fixed plate through a plurality of first springs, a first sliding rod slidingly installed on the guide block, and the first sliding rod being connected with the electromagnet through a second sliding rod. The bending machine can push the thin iron plate under the bending cutter head without moving the thin iron plate by the staff, and the bending cutter head can perform the next bending processing on different positions of the thin iron plate, so that the operation is more convenient and fast, the workload of the staff is greatly reduced, and the efficient processing of the thin iron plate is facilitated.

The invention belongs to the technical field of braking, and discloses an electromagnet which is used for an EMB parking structure, the EMB parking structure comprises a motor, a ratchet wheel and a pawl, the electromagnet comprises a frame body, a static magnetic assembly, a movable magnetic core and an elastic piece, the static magnetic assembly is arranged in the frame body, the movable magnetic core penetrates through the frame body and is connected with the pawl, the static magnetic assembly generates force F1 for driving the movable magnetic core to move, and the elastic piece is arranged on the frame body. The F1 changes along with movement of the movable magnetic core, and the elastic piece is used for generating force F2 for driving the first end of the movable magnetic core to extend outwards. When the vehicle is not parked, the movable magnetic core is located at the initial position; when parking is needed, the movable magnetic core extends outwards from the initial position to the parking position through the first position, and the pawl is driven to move and abut against the interior of a tooth groove between every two adjacent ratchets of the ratchet wheel. When the electromagnet is not powered on, the movable magnetic core is located at the first position, F1 is equal to F2, the stroke length of the movable magnetic core from the parking position to the first position is larger than the ratchet height of the ratchet wheel, and the electromagnet can be matched with the motor to achieve the anti-sliding function without being powered on any more.

The utility model provides an auxiliary optical fiber and chip coupling device and a detection coupler, the coupling device comprises an adsorption part, a coil, a holding part used for supporting the adsorption part, a joint used for connecting the adsorption part and the holding part, and an adapter plate used for fixing the holding part, the first end of the adsorption part is used for adsorbing an optical fiber or a chip, and the second end of the adsorption part is used for adsorbing a chip. The coil is wound around the periphery of the adsorption component in the same direction, the second end of the adsorption component is connected with the first end of the connector, the second end of the connector is connected with the first end of the holding component, a clamping hole is formed in the adapter plate, and the adapter plate fixes the holding component through the clamping hole. According to the technical scheme for assisting coupling of the optical fiber and the chip, the coil is arranged on the periphery of the adsorption part, so that the electromagnet is formed, after the coil is connected with voltage, the electromagnet takes the inner wall of the adsorption part as a magnet, and the suction force of the first end of the adsorption part to the optical fiber or the chip is increased; and a coupling point position does not displace.

The utility model relates to a pillow spring assembling and disassembling clamp which comprises an electromagnetic iron core, a coil winding, a pneumatic tool, an ejector pin, a pen-shaped air cylinder, an adjusting gasket, a supporting seat and an installing seat, the electromagnetic iron core is fixedly arranged on the supporting seat, a combination mode of the electromagnetic iron core and the pen-shaped air cylinder is adopted, and the magnetic pole face of the electromagnetic iron core adopts two sections of cambered surfaces and a plane. The two sections of cambered surfaces are used for magnetically attracting bearing springs and damping springs of different sizes respectively, the plane is used for magnetically attracting a wedge or other parts, and the height is set to be the height of the two rings of springs so that the industrial robot can work in the side frame conveniently; the cylinder mounted behind the electromagnet adopts the design of a single-pen cylinder and a round head ejector pin, so that the problem of clamping of multiple cylinders is avoided, the ejector pin round head structure effectively realizes clamping and releasing of an inner spring and an outer spring, the mechanical failure rate is reduced, and automatic disassembly and assembly operation of different types of bogie pillow springs, wedges and other parts is facilitated.

The platform door unlocking device comprises an electromagnetic door lock and a manual unlocking module, the electromagnetic door lock comprises an electromagnet, an unlocking plectrum rotating shaft and an unlocking plectrum, the electromagnet comprises a movable iron core, and the movable iron core is connected with a center lock pin shaft and a manual unlocking plate; the unlocking plectrum rotating shaft is arranged on a shell of the electromagnet, and the unlocking plectrum is rotatably arranged on the unlocking plectrum rotating shaft; the manual unlocking module comprises a deflector rod seat, a deflector rod rotating shaft, a deflector rod and an inhaul cable, the deflector rod rotating shaft is arranged on the deflector rod seat, the deflector rod is rotatably arranged on the deflector rod rotating shaft, the inhaul cable is connected with one end of the deflector rod, and a reset spring is arranged between the deflector rod seat and the deflector rod. The platform door unlocking device has the advantages that the number of manual unlocking channels is large, the coverage range of the unlocking position is large, adaptability is high, operability is good, safety is high, the emergency escape requirements of platform doors of various vehicle type stops can be met through the platform door unlocking device, and the platform door unlocking device has wide market prospects.

The invention discloses a plastic waste recycling device and belongs to the field of plastic recycling, the plastic waste recycling device comprises a conveying belt, supporting frames are arranged on the two sides of the conveying belt, a treatment bin is fixedly connected to one sides of the supporting frames, a crushing assembly is arranged at the bottom of the treatment bin, and a magnetic separation assembly is arranged in the middle of the interior of the treatment bin. Metal blocks contained in plastic waste can be attracted by the electromagnet set, plastic can sequentially pass through the electromagnet set to enter the next link, the situation that the metal blocks damage metal parts in follow-up core equipment is avoided, the safety of the follow-up equipment is effectively improved, and the operation and maintenance cost of the equipment is reduced; under the condition that equipment does not stop working, different electromagnet sets can be rapidly switched back and forth to work, metal blocks on the surfaces of the electromagnet sets moved out of the treatment bin can be collected and treated, equipment stop is avoided, the work progress is accelerated, and the workload of workers is reduced.

A magnetic die changing device comprises a base plate and a plurality of magnetic units, a plurality of grooves are formed in the top face of the base plate, the bottom face of the base plate makes contact with a die back plate, the magnetic units are arranged in the grooves and comprise permanent magnets and electromagnets, the permanent magnets are located below the electromagnets, and the electromagnets are located below the permanent magnets. The electromagnet comprises a base body and a magnet exciting coil wound on the base body, the bottom face of the groove is further provided with a containing ring groove, and a detection coil is arranged in the containing ring groove. According to the utility model, the substrate and the magnetic unit are arranged, and the current direction in the electromagnet in the magnetic unit is switched, so that the magnetic field generated by the permanent magnet is counteracted or enhanced, and further, the mold can be attracted or loosened, and rapid mold replacement is realized.