418 results about "Electromagnetic vibration" patented technology

The invention discloses a variable air gap domain-based permanent magnet motor topology hierarchy optimization design method and a motor, and the method comprises the steps: firstly determining an electromagnetic performance layer optimization target, constructing a geometric parameter model, carrying out the dimensionality reduction of a high-dimensional parameter, and constructing a first hierarchy optimization sub-model I; performing geometric parameter optimization on the stator and rotor basic domain by combining a multi-objective optimization algorithm to obtain an optimized motor I; analyzing and optimizing the characteristic electromagnetic force of the motor I under different working conditions to serve as a second-level optimization target, constructing a second-level optimization sub-model II, performing small-scale online topological optimization in combination with a multi-target genetic algorithm, performing secondary design on a motor air gap design domain, obtaining a sample data set, constructing a parallel agent model, and constructing a second-level optimization sub-model II; then large-scale off-line topological optimization is carried out, and remodeling of a motor air gap design domain is achieved; and performing simulation evaluation on the final optimized motor. According to the method, on the premise that the vehicle permanent magnet driving electromagnetic performance is kept, electromagnetic vibration noise under multiple working conditions is suppressed, and meanwhile optimization efficiency is remarkably improved.

The invention relates to an AI server cooling water pump vibration quantity self-adaptive calibration test method and system, an intelligent test platform integrates a six-dimensional force sensor and a temperature compensation vibration exciter, the platform rigidity is automatically calibrated, a water pump-pipeline system transfer function is obtained, and a rotating speed-lift-modal frequency three-dimensional mathematical model is established; a three-axis MEMS accelerometer array is arranged at sensitive parts such as a water pump bearing seat and a motor shell, and vibration, current and pressure signals are synchronously collected; carrying out time-frequency domain signal processing by adopting variational mode decomposition in combination with self-adaptive S transformation, and extracting a 128-dimensional full-frequency domain feature vector containing a modulation side frequency band; effective values of vibration acceleration, speed and displacement are calculated through a frequency domain integration algorithm, and current harmonic interference is corrected through an electromagnetic vibration compensation model; and finally, a vibration health degree evaluation model containing 18 characteristic parameters is established based on a support vector machine, the test system comprises an intelligent test platform unit, a multi-source sensing unit, an edge calculation unit and a data management unit, and microsecond-level synchronous acquisition and GB-level data throughput are realized through a time sensitive network. And online incremental learning and automatic generation of a test report are supported. The method has the effect of improving the water pump vibration quantity test precision.

The invention provides a rotor iron core, a permanent magnet motor and an inverter compressor, and relates to the technical field of motor and compressor design and manufacture, the rotor iron core comprises uniformly distributed permanent magnet grooves, a groove is arranged between two adjacent permanent magnet grooves, each groove extends inwards along the radial direction of the rotor iron core, parallel magnetic bridges are arranged between the grooves and the permanent magnet grooves, and the permanent magnet grooves are connected with the parallel magnetic bridges. A first magnetic barrier groove, a second magnetic barrier groove and a third magnetic barrier groove which are symmetrically distributed are formed in the two sides of the top of each permanent magnet groove respectively, a first arc and a second arc are arranged on the outer side of the rotor core above the magnetic barrier grooves, the second arc intersects with the side edge of the groove, and permanent magnets with alternating magnetism are embedded in the permanent magnet grooves. The radius Rr of the outer side of the rotor iron core, the distance ho from the middle point of the bottom of the permanent magnet groove to the center point of the rotor iron core and the thickness hm of the permanent magnet meet the condition that (Rr-ho) / hm is larger than 2 and smaller than or equal to 3.4. By reasonably arranging the position and the size of the magnetic barrier groove, magnetic circuit distribution can be changed, magnetic flux leakage can be reduced, the power density of the motor can be increased, and electromagnetic vibration noise of the motor and the compressor can be reduced.

The invention discloses a high-speed motorized spindle integrating an electromagnetic actuator and a magnetofluid bearing and a using method. The high-speed motorized spindle comprises a spindle body, and a spindle body of the spindle body is supported through the arranged magnetofluid bearing; an electromagnetic actuator system used for detecting and controlling fluttering of the main shaft is arranged at the end of the main shaft and comprises a displacement detection mechanism used for detecting fluttering displacement of the main shaft and an electromagnetic vibration suppression mechanism used for applying electromagnetic force to suppress fluttering of the main shaft according to the detection result of the displacement detection mechanism. According to the magnetofluid bearing, stable and high-rigidity support is provided for a shaft by using a magnetofluid medium and utilizing the characteristic that the viscosity of the magnetofluid can be changed under an external magnetic field; and meanwhile, the electromagnetic actuator actively controls vibration generated in the machining process through accurate magnetic field control, and the stability of the main shaft in the machining process can be effectively improved. Through the combination of the two, the overall stability and the dynamic response capability of the system are remarkably improved.

The invention discloses an electromagnetic rapping efficient deashing filter cartridge mechanism, which belongs to the technical field of filter cartridges, and comprises an inner skeleton, a filter layer sleeving the outer side of the inner skeleton, and a lower end cover fixed at the bottom of the inner skeleton, and the bottom end of the lower end cover is provided with an electromagnetic vibrator. The electromagnetic vibrator is mounted at the bottom of the lower end cover, so that the filter cartridge has a vibrating dust removal function, a transmission mechanical vibration mode is replaced, the service life of the filter cartridge is prolonged, the vibrating strength and frequency can be adjusted according to working requirements, the practicability is high, and the practicability is high. In cooperation with an elastic connecting mechanism composed of a damping spring, a damper, an outer rubber film, a fixing ring, an inner groove, an arc-shaped groove, a cylindrical rod and an inner rubber film between the mounting base and the upper end cover, in the vibration process, the filter cartridge can be controlled to vibrate up and down, meanwhile, the filter cartridge can be controlled to rotate in a reciprocating mode at a certain angle in the circumferential direction, the vibration amplitude is increased, and the vibration effect is improved. And the ash removal effect is better.

The utility model provides an electromagnetic electro-hydraulic composite vibration device which comprises a cylinder body, a magnetic cylinder ring arranged on the side edge of the cylinder body in the axial direction and a piston penetrating through the cylinder body in the axial direction, an excitation piece is arranged in the magnetic cylinder ring, a driving coil is arranged on the piston, and the excitation piece is connected with the driving coil. The middle of the piston protrudes outwards in the axial direction to form a stress protrusion, the stress protrusion abuts against the cylinder body in the radial direction, the driving coil is used for being matched with an excitation piece to drive the piston to move in the axial direction, and the cylinder body is hollow to form an upper hydraulic cavity and a lower hydraulic cavity which are located on the two sides of the stress protrusion. The cylinder body is provided with a first hydraulic runner and a second hydraulic runner which are used for being communicated with the upper hydraulic cavity and the lower hydraulic cavity respectively. According to the electromagnetic electro-hydraulic composite vibration device and the vibration table, electromagnetic vibration and electro-hydraulic vibration can be achieved on one vibration table, the bandwidth coverage is wide, and compared with two sets of equipment which operate independently, the cost is lower, and the occupied area is smaller.

The invention discloses a method and system for analyzing high-voltage electromagnetic resonance noise of an electric vehicle, and relates to the technical field of automobile electromagnetic vibration noise, and the method comprises the steps: obtaining noise information data during the operation of the vehicle, the key parts of the vehicle comprising a high-voltage motor and a battery pack; the collected noise data are preprocessed and analyzed, and the noise data are decomposed into different frequency components. The invention further discloses a system for analyzing the high-voltage electromagnetic resonance noise of the electric vehicle. According to the system of the method for analyzing the high-voltage electromagnetic resonance noise of the electric vehicle, the high-voltage electromagnetic resonance noise of the electric vehicle can be rapidly analyzed through the automatic data acquisition and signal processing flow, the analysis efficiency is improved, and the analysis accuracy is improved by adopting an advanced signal processing algorithm and analysis technology. According to the method, the resonant frequency can be accurately identified, the resonant mechanism can be accurately analyzed, the analysis precision is improved, and the electrical system and structural characteristics of the electric vehicle are considered.

The invention discloses an electromagnetic vibration table multi-mode self-adaptive guiding system which comprises a vibration table body, an intelligent guiding adjusting system, a multi-sensor fusion framework and a reset control module, and the intelligent guiding adjusting system, the multi-sensor fusion framework and the reset control module are arranged in the vibration table body. The intelligent guiding adjusting system comprises an adjusting assembly and a harmonic wave speed reducing motor set, the output end of the harmonic wave speed reducing motor set is connected with the adjusting assembly, the harmonic wave speed reducing motor set is electrically connected with the reset control module, and the adjusting assembly is connected with the moving coil; the multi-sensor fusion framework comprises an MEMS gyroscope, a laser displacement sensor and a six-dimensional force sensor, the MEMS gyroscope is located in the moving coil, the laser displacement sensor is located outside the moving coil, and the six-dimensional force sensor is located at the top of the moving coil. The vibration waveform fidelity is improved to 98% or above, and the method is suitable for high-end test scenes such as spacecraft assemblies (10-2000 Hz) and new energy automobile battery packs (20-500 Hz).

The ultrafiltration membrane assembly comprises a membrane shell, a containing cavity is formed in the membrane shell, an ultrafiltration membrane set is arranged in the containing cavity, the ultrafiltration membrane set comprises a central tube, ultrafiltration membrane wires and an ultrafiltration membrane cover, and the central tube, the ultrafiltration membrane wires and the ultrafiltration membrane cover are fixed through sealing glue; the device further comprises an electromagnetic vibration assembly, the electromagnetic vibration assembly comprises a vibration ring, a mounting sleeve and an electromagnet, the mounting sleeve is attached to the inner wall of the membrane shell, the outer side of the ultrafiltration membrane wire is sleeved with the vibration ring, and the vibration ring is connected with the mounting sleeve through an elastic piece; at least one magnet block is embedded in the vibrating ring, the electromagnet is mounted on the outer side wall of the membrane shell, and magnetic poles on the electromagnet can be alternately changed to drive the vibrating ring to drive the ultrafiltration membrane filaments to vibrate. The vibrating ring is arranged in the membrane shell, the vibrating ring is used for driving the ultrafiltration membrane filaments to vibrate during flushing, dirt attached to the ultrafiltration membrane filaments is cleaned through vibration and water flow impact force, cleaning of the dirt attached to the membrane filaments is accelerated, the cleaning efficiency and the cleaning strength are improved, and the service life of the membrane filaments is prolonged.

The invention provides an energy management system and an energy management method of an electromagnetic vibration energy harvesting device. The energy management system comprises an AC / DC selection unit, a three-phase rectification circuit, a filter circuit, a charging management unit, an anti-backflow circuit and a system power supply module. Wherein the alternating current and direct current selection unit selectively conducts an alternating current path or a direct current path based on the time-varying characteristic of real-time current output by the electromagnetic vibration energy harvesting device; the three-phase rectifying circuit is used for rectifying alternating current in the alternating current path into direct current; the filter circuit is used for filtering the direct current passing through the direct current path; the charging management unit performs charging management on the energy storage device based on the current input by the alternating current path or the direct current path; the anti-backflow circuit is used for preventing current backflow; the system power supply module is used for supplying power to the AC-DC selection unit and the charging management unit. According to the invention, flexible and efficient energy management can be realized for the energy output characteristics of the electromagnetic vibration energy harvesting device.

The multi-directional controllable suspension system comprises a linear electromagnetic vibration reduction assembly and an arc-surface electromagnetic vibration reduction assembly, when the multi-directional controllable suspension system is used, when a vehicle frame at the lower end vibrates vertically, a first guide rod moves in the axial direction of an outer cylinder, and a cylindrical electromagnetic coupling unit fixed to the first guide rod moves between an outer permanent magnet array and an inner permanent magnet array; when the vehicle body inclines laterally or twists, the outer cylinder rotates around the hinged point of the outer cylinder and the lower end vehicle frame, the cambered surface electromagnetic coupling unit is driven to deflect between the upper permanent magnet array and the lower permanent magnet array, the gradient magnetic field is cut to generate resistance moment, and vibration is reduced. The first elastic piece and the second elastic piece provide elastic restoring force for the upper permanent magnet array and the lower permanent magnet array correspondingly to cooperatively inhibit side inclination and torsion, so that multi-dimensional vibration reduction in the horizontal direction is achieved, and the dynamic stability of the vehicle is improved.

The invention discloses a rapid calculation method for electromagnetic vibration of a permanent magnet synchronous motor, and belongs to the technical field of electromagnetic field calculation. According to the method, a magnetic potential and magnetic conductance method is innovatively combined with an improved sub-domain method, the problem of complexity of electromagnetic field distribution of a nonlinear material is effectively solved through the magnetic potential and magnetic conductance method, and the capture precision of electromagnetic field changes is remarkably improved by dividing a computational domain into a plurality of sub-domains through the improved sub-domain method. According to the method, the influence of the tangential electromagnetic force wave and the harmonic current is fully considered, and high-precision calculation of the electromagnetic force can be realized. On the basis, a stator core shell equivalent theoretical model is established, the inherent frequency of the stator is calculated by adopting an energy method, and the accuracy of the model is verified through a modal experiment. Furthermore, by determining the frequency response function of the stator in the low-order mode, the acceleration spectrum and electromagnetic force wave distribution of the prototype stator in each mode are obtained based on the linear superposition principle. Compared with a traditional electromagnetic-structure coupling finite element model, the method has the advantages that the calculation efficiency is remarkably improved while the calculation precision is guaranteed, the calculation time is shortened by 59.3%, and efficient and reliable technical support is provided for optimization design of electromagnetic equipment.

The invention provides an electromagnetic vibration cavitation assisted chemical mechanical polishing device and method.The device comprises a polishing disc, a mounting frame, a polishing main shaft and a mounting disc, the polishing main shaft is mounted on the mounting frame and comprises a connecting shaft, a hollow rotating shaft, a stator sleeve and a vertical floating mechanism, and the vertical floating mechanism is connected between the connecting shaft and the hollow rotating shaft; the vertical floating mechanism vibrates in a reciprocating mode in the vertical direction while driving the hollow rotating shaft to rotate, a liquid inlet used for introducing polishing liquid is formed in the outer side of the stator sleeve, the mounting disc is connected to the bottom of the hollow rotating shaft, a workpiece is clamped by the bottom of the mounting disc, and the lower surface of the workpiece is evenly coated with an agent injected through the liquid inlet. Polishing liquid enters the position between the workpiece and the polishing disc to form a liquid film, and when the mounting disc and the polishing disc rotate relatively, the polishing uniformity of the workpiece can be improved. And by arranging the vertical floating mechanism, the workpiece can axially vibrate relative to the polishing disc while the mounting disc and the polishing disc rotate relatively, and the polishing efficiency is improved.

The utility model relates to the technical field of electromagnetic vibration tables, in particular to an electromagnetic vibration table convenient for heat dissipation, which comprises a main body mechanism, a functional mechanism, a heat dissipation mechanism and an auxiliary mechanism, the functional mechanism is positioned in the main body mechanism, the heat dissipation mechanism is positioned in the main body mechanism, and the auxiliary mechanism is positioned on one side of the main body mechanism. Excitation signals are sent out through the control panel fixedly installed on one side of the shell of the electromagnetic vibration table, the vibration base connected with the coils is driven through the first magnetic field coil and the second magnetic field coil which are arranged in the magnetic field, and the moving coil upper guiding system and the moving coil lower guiding system are used for stabilizing equipment. A flow guide fan is fixedly installed at the bottom end of the vibration table heat dissipation base, air is sucked in from an equipment air inlet in one side of the electromagnetic vibration table shell and exhausted from an equipment air outlet in one side of the vibration table heat dissipation base, and a fence net is installed between the equipment air inlet and the equipment air outlet, so that foreign matter is prevented from entering and damaging equipment.

The invention discloses a prebaked anode production material conveyor and a control method, and relates to the technical field of prebaked anode production, the prebaked anode production material conveyor comprises a conveyor main body, and the conveyor main body comprises an inner-layer conveying pipe and an outer-layer cooling jacketed pipe coaxially arranged outside the inner-layer conveying pipe; an electromagnetic vibration exciter; the electromagnetic vibration exciter is arranged below the conveyor body and fixedly connected with the inner-layer conveying pipe through a rigid connecting piece, and the feeding module and the discharging module are located at the starting end and the tail end of the conveyor body respectively. The material characteristic identification sensor group is arranged in the feeding module; and the central control system is electrically connected with the material characteristic identification sensor group and the electromagnetic vibration exciter. Safety and environmental protection are guaranteed through a full-sealing structure and an active heat dissipation technology, efficient and general conveying of multi-form materials is achieved through material recognition and self-adaptive vibration control, and continuity and reliability of production are guaranteed in combination with an online self-cleaning system.

The utility model relates to the technical field of motorcycle shock absorber processing, and discloses a quality detection instrument for motorcycle shock absorber processing, which comprises a detection instrument and a clamping assembly. The performance, durability and reliability of the motorcycle shock absorber under the vibration condition can be evaluated through the detection instrument, the motorcycle shock absorber is clamped and fixed through the clamping assembly, and damage can be reduced through the three anti-collision assemblies when the three anti-collision plates are collided. The top of the motorcycle shock absorber can be prevented from being impacted through the baffle, the motorcycle shock absorbers of different lengths can be clamped and fixed through the two auxiliary positioning assemblies, and the effects that the motorcycle shock absorbers of different lengths can be rapidly clamped and fixed and are prevented from being impacted are achieved; the problems that when the motorcycle shock absorber is detected by an electromagnetic vibration test bed, the position of a clamping device cannot be rapidly adjusted, the clamping device cannot be clamped and fixed, and the motorcycle shock absorber cannot be prevented from being directly impacted are solved.

In order to solve the problem of intelligent screening of colors of waste glass, the invention designs an intelligent screening device for waste glass, and the device is sequentially provided with an electromagnetic vibration feeder, a chute, a light source, an image acquisition and recognition device, a pneumatic injection device and a glass classification storage device from an input end to an output end. According to the method, the colors of the waste glass particles are collected, the colors of the waste glass particles are recognized through an image recognition and processing algorithm, and then the waste glass is classified and screened by controlling a pneumatic injection device according to the recognition result. The intelligent waste glass color screening system which is convenient, rapid and high in screening precision is provided for waste glass color screening.

The invention discloses an electromagnetic vibration table for an uncooled infrared machine core assembly adopting multiple sensors, and relates to the technical field of vibration tables. By arranging four groups of vibration testing mechanisms of low frequency, intermediate frequency, high frequency and ultrahigh frequency, vibration waves of different frequencies can be synchronously or alternately generated, complex operation conditions of the uncooled infrared movement in real environments such as transportation jolting, mechanical shock and high-frequency vibration can be simulated, and vibration testing of different vibration frequencies can be performed on a plurality of uncooled infrared movement assemblies at the same time. Wherein the low-frequency vibration testing mechanism and the intermediate-frequency vibration testing mechanism can simulate low-frequency vibration in a transportation process, the high-frequency vibration testing mechanism can simulate high-frequency noise interference in operation of the uncooled infrared movement, and the ultrahigh-frequency vibration testing mechanism can simulate an instantaneous impact working condition of the uncooled infrared movement in an extreme environment. Therefore, each uncooled infrared movement to be tested can undergo vibration tests in various modes, full-band coverage tests are realized, and the accuracy and credibility of test results are greatly improved.

The invention discloses a process for preparing a high-strength aluminum alloy profile through gradient cooling die-electromagnetic vibration combined extrusion, and belongs to the technical field of aluminum alloy machining. According to the technology, the uniform fine grain structure and high performance of the aluminum alloy profile are achieved through the design of the length of a die working tape and the flow gradient of a cooling channel in cooperation with an electromagnetic vibration device. After a blank is subjected to homogenization treatment, the blank is extruded through a gradient cooling die, a thin-wall area working zone is 20-25 mm, the cooling water flow is 15-20 L / min, a thick-wall area working zone is 10-15 mm, the cooling water flow is 5-10 L / min, 20-50 Hz electromagnetic vibration is applied at the same time, water mist quenching and aging treatment are conducted immediately after extrusion, zinc ions serve as heterogeneous nucleation cores to promote generation of new crystal grains, ferrocene sulfenyl is adsorbed to the surfaces of the crystal grains to inhibit growth, and the thickness of the crystal grains is 10-15 mm. The average grain size is refined, and the effect is improved.

The invention relates to the technical field of steel member detection, and discloses a steel member bearing test and anticorrosive coating adhesive force detection table which comprises a workbench, a positioning clamping assembly is arranged in the middle of the top side of the workbench, a horizontal adjusting assembly is arranged at the bottom of the workbench, and pushing assemblies are arranged at the left ends of the front side and the rear side of the top of the workbench. A bearing loading mechanism is arranged in the middle of the upper end of the pushing assembly, and an auxiliary assembly is arranged at the right end of the top of the workbench. Through the integrated design of the detection table, the integrated operation of the bearing test of the steel member and the adhesive force detection of the anticorrosive coating is realized, and the detection efficiency is greatly improved; in the load-bearing loading mechanism, a hydraulic cylinder I and an integrated electromagnetic vibrator work cooperatively, static load can be provided, dynamic vibration can be superposed, load data can be monitored in real time in combination with a pressure sensor, the stress state of the steel member under complex working conditions can be accurately simulated, and diversified load-bearing test requirements are met.

The invention discloses a permanent magnet synchronous motor zero-order radial force analysis modeling method based on lumped parameters, and belongs to the technical field of motor electromagnetic vibration noise analysis. According to the method, the flux linkage is taken as a key correlation variable, and the relationship between the air gap flux density distribution and the current is revealed by reasonably selecting lumped parameters. The relationship between current and flux linkage is established by using incremental inductance, permanent magnet flux linkage and armature flux linkage are separated by using apparent inductance, and the influence of flux leakage on air gap armature flux linkage is analyzed by using stator leakage inductance. According to a winding structure, an air gap flux density distribution basic waveform is established, and the armature air gap flux density distribution characteristic is further refined by analyzing the influence of a stator structure and a magnetic bridge. In addition to traditional lumped parameters, new lumped parameters are also defined for establishing an analytical model. Compared with a finite element model in the prior art, the analytical model disclosed by the invention has higher precision, and can intuitively express the relationship among the current, the lumped parameter and the zero-order radial electromagnetic force.

The invention discloses a self-adaptive active electromagnetic vibration reduction method and system for gear transmission. Relates to a vibration suppression method and system. In order to solve the problems that an existing damping device is complex in structure, a controllable characteristic vibration line spectrum is limited, and shaft vibration cannot be controlled, the method comprises the following steps that a first vibration signal is decomposed into a vibration harmonic component, and then a first amplitude and a first phase of the vibration harmonic component are obtained through calculation; generating a preset exciting force; collecting a second vibration signal; decomposing the second vibration signal into a vibration harmonic component, and calculating to obtain a second amplitude and a second phase of the vibration harmonic component; calculating to obtain a vibration influence coefficient; actual exciting force is obtained through calculation of the vibration influence coefficient; a vibration reduction excitation current corresponding to the actual excitation force is generated; and generating reverse exciting force according to the vibration reduction exciting current, and applying the reverse exciting force to a gear shaft of the gear transmission system to perform vibration reduction on the gear transmission system.

The invention discloses a multi-station automatic seed vigor modeling and efficient sorting system of a disc structure, which comprises a rotating base disc, and three stations are arranged on the rotating base disc and are respectively a feeding station, a detection station and a sorting station; wherein a feeding mechanism is arranged at the feeding station; a multi-channel spectrum detection unit is arranged at the detection station; and the transfer mechanism and the classified collection box are arranged at the sorting station. According to the multi-station seed vigor detection device, the problem that traditional seed vigor detection equipment is low in efficiency is solved, synchronous feeding, detection and suction of a large number of seeds are achieved through the multi-station design on the rotating base disc, the seed detection speed is greatly increased, and the requirement that the seed production scale is continuously enlarged in the agricultural modernization process can be better met. And secondly, the vacuum suction device, the electromagnetic vibration device and the array aperture disc are matched for use, so that array type single-grain distribution of the seeds can be realized, and a foundation is laid for subsequent accurate detection and sorting.

The invention relates to the technical field of submersible pump testing, and discloses a permanent magnet variable frequency submersible pump testing method and system. The method comprises the following steps: acquiring an original response signal cluster of the submersible pump in multi-stage variable-speed operation by constructing an integrated test environment; decoupling and enhancing the signal cluster based on time sequence dependence, and separating out an independent hydraulic performance characteristic signal group and an independent electromagnetic vibration characteristic signal group; and inputting the characteristic signal group into a dynamic working condition simulator, and restoring an internal flow field pressure cloud picture and a rotor stress distribution picture of the submersible pump under the simulated working condition through an iterative approximation algorithm. The two are fused to deduce a potential failure mode and its evolution trajectory, and an enhanced test procedure is generated accordingly. According to the method, accurate separation of multi-physics field test signals and visualization of internal states are realized, and the accuracy of fault attribution and the advance of failure prediction are improved.

The invention discloses a multi-angle fixing tool for a vibration detection platform, and belongs to the technical field of electromagnetic vibration test benches. The device mainly comprises a vibrating body; a movable plate is mounted at the top of the workbench in a sliding manner; the fixing device comprises a bottom plate, a plurality of sets of sliding blocks are installed at the bottom of the bottom plate, and a plurality of sets of clamps are arranged at the top of the bottom plate; the testing device comprises a bearing plate, and two groups of first slideways are arranged at the top of the bearing plate; the position of the supporting assembly corresponds to the position of the bottom plate; the connecting assembly is suitable for connecting the bearing plate with the moving plate; a turning assembly; a roll assembly. According to the multi-angle fixing tool for the vibration detection platform, by arranging the turning simulation assembly, the roll simulation assembly and the conventional simulation assembly, flexible simulation can be carried out according to different road conditions and driving states, and powerful support is provided for quality detection and performance evaluation of automobile parts.

The invention relates to the technical field of transformers, in particular to a voltage regulating transformer which comprises a machine shell, a cover plate and a voltage transformation device, two transverse plates are arranged at the bottom of the voltage transformation device, grooves are formed in the bottoms of the two transverse plates, and clamping seats movably connected with the two grooves are movably arranged in the machine shell. According to the voltage regulating transformer, the L-shaped rods, the extrusion plates and the grooves of the transverse plates are dynamically matched, and the L-shaped rods and the extrusion plates are cooperatively operated with the shaking adjusting mechanisms, so that the voltage regulating transformer has the advantages that the voltage regulating effect of the voltage regulating transformer is improved, and the voltage regulating transformer is convenient to use and high in practicability. A multi-stage buffer system is constructed between the transformer core element and the shell, in the aspect of vibration isolation, when electromagnetic vibration is transmitted to the fixed inclined block through the clamping base and the movable inclined block, vertical vibration is converted into horizontal displacement through the inclined plane structure, and external mechanical impact can be effectively attenuated through spring damping.

The invention relates to the technical field of masonry construction, and discloses a construction method for improving masonry quality and progress, which comprises the following steps: step 1, scanning a construction area by adopting a multi-beam ground penetrating radar, marking a foundation cavity and grouting and reinforcing, step 2, paving a mortar belt with a trapezoidal section through a movable mortar paving vehicle integrated with an electromagnetic vibration module, and step 3, paving a mortar belt with a trapezoidal section through a movable mortar paving vehicle integrated with an electromagnetic vibration module. The method comprises the following steps: step 1, carrying out three-way positioning correction on a prefabricated building block by using a pneumatic leveling device, step 4, moving and heating along a mortar joint by using a 2.45 GHz microwave curing instrument, and triggering secondary leveling of mortar, and step 5, integrating construction data based on a BIM platform and generating a quality label bound by space-time coordinates. Foundation holes are accurately positioned through gridding scanning of the multi-beam ground penetrating radar, a construction coordinate system is established in combination with a Beidou positioning system, the pneumatic leveling device adopts a three-axis tilt angle sensor and a displacement feedback system, the flatness and perpendicularity of masonry installation are ensured, construction errors are reduced from the source, and the structural stability is improved.

The invention discloses a cover glass separation device and a separation method. The separation device comprises a cover glass separation rack, a cover glass storage mechanism, a cover glass moving mechanism and a cover glass vibration separation mechanism, the cover glass vibration separation mechanism comprises an adsorption moving seat, an electromagnetic vibration assembly, a suction cup assembly and a vibration jacking assembly; according to the separation method, the suction cup assemblies are used for tightly sucking the cover glass in the cover glass storage mechanism, the cover glass moving mechanism is used for driving the adsorption moving seat to move upwards, the electromagnetic vibration assembly drives the two suction cup assemblies to vibrate relative to the vibration jacking assembly, and the vibration jacking assembly has the jacking effect on the middle position of the cover glass. The elastic deformation radian of the cover glass is increased, so that the adhered cover glass is separated; the problem that multiple pieces of cover glass are sucked at a time due to adhesion is effectively avoided, the stability and efficiency of separation operation are improved, the operation difficulty and the error risk are reduced, and waste of the cover glass and sample pollution are reduced.

The invention discloses a friction stir welding and additive preparation method for an aluminum steel dissimilar material and application of the friction stir welding and additive preparation method. The friction stir welding and additive preparation method comprises the following steps that S1, an aluminum alloy material and a stainless steel material are preheated; s2, under the condition that electromagnetic vibration and ultrasonic vibration are applied, an aluminum alloy material and a stainless steel material are subjected to material adding through a stirring friction material adding technology, and an aluminum-steel dissimilar material is obtained; and S3, the aluminum steel dissimilar material is heated to 200-500 DEG C through pulse current, then cooled to-196--100 DEG C, subjected to cold insulation, then heated to 200-400 DEG C through high-frequency pulse current, and subjected to heat preservation. According to the friction stir welding and additive preparation method for the aluminum steel dissimilar material, the forming precision, the strength, the corrosion resistance and the production efficiency of the prepared aluminum steel dissimilar material are all remarkably improved.

A tea leaf flow dividing production line comprises a feeding conveyor, an electromagnetic vibration feeder, a double-material-opening conveyor, a double-channel vibration feeder, an inclined-material-opening conveyor and a discharging conveyor. The feeding conveyor is obliquely arranged through a first frame body, a discharging bin A is arranged at the high end of the feeding conveyor, an electromagnetic vibration feeder is arranged below the discharging bin A, and the discharging end of the electromagnetic vibration feeder is connected to the double-material-opening conveyor. The double-material-opening conveyor is obliquely arranged through a third frame body, two discharging channels are arranged at the high-position end of the double-material-opening conveyor, and a double-channel vibration feeder is arranged below the two discharging channels. An inclined material opening conveyor is arranged below each of two discharging openings of the double-channel vibration feeder, the inclined material opening conveyors are obliquely arranged through a fifth frame body, discharging bins B are arranged at the high-position ends of the inclined material opening conveyors, and a discharging conveyor obliquely arranged through a sixth frame body is arranged below each discharging bin B. The tea leaf distribution device realizes fine distribution of tea leaves, ensures conveying consistency, and improves production efficiency.