2831 results about "High frequency vibration" patented technology

The invention provides an intelligent sewage treatment process optimization method and system. The method comprises the following steps: continuously collecting the flux attenuation rate, transmembrane pressure difference and pollutant spectrum data of a ceramic membrane, carrying out time sequence analysis, constructing a pollution accumulation dynamic model, and predicting a critical threshold value; when a threshold value is reached, triggering an ultrasonic cavitation device, adjusting high-frequency vibration to generate a microbubble group, stripping pollutants by utilizing shock waves, and calculating membrane flux recovery data; fusing the spectral data and the recovery data to extract an actual pollution stripping efficiency value, and comparing a theoretical value to obtain a difference proportion; if the actual value is lower than the theoretical value, the cleaning period is shortened, the fluid pressure is increased to strengthen the stripping effect, and meanwhile, dynamic model parameters are reversely corrected based on the pressure adjustment amplitude to form closed-loop regulation and control. According to the invention, intelligent prediction, self-adaptive cleaning and closed-loop optimization of ceramic membrane pollution are realized, the sewage filtering efficiency is improved, and the energy consumption and cleaning cost are reduced.

The invention discloses a hydraulic motor fault diagnosis method and system based on heterogeneous asynchronous data fusion, and the method comprises the steps: collecting heterogeneous asynchronous data of a sensor network, carrying out the preprocessing of the data, inputting the data into a parallel dynamic pruning residual network, extracting features, and carrying out the preliminary fusion, thereby obtaining an initial feature plane; and inputting the initial feature plane into a multi-connection neural network, fusing data, extracting features, obtaining a final feature plane, using the fused feature data as a training set, and building a feature classification model to test and evaluate the performance of the feature classification model. According to the method, the limitation of a traditional fusion model in asynchronous processing of high-frequency vibration signals and low-frequency thermodynamic data of a hydraulic system is effectively overcome, the robustness of key fault features in a strong noise environment is remarkably improved, and rapid virtual-real mapping of bench test simulation data and online monitoring data is realized; typical faults such as plunger pair abrasion and valve plate cavitation of the hydraulic motor can be accurately supported, and safety guarantee is provided for equipment life prediction and safety control.

According to the drilling, sealing and injecting integrated anchor rod drilling intelligent monitoring system and method, a rod body is sequentially provided with a head-section wave-shaped threaded section, a middle-section large threaded section and a tail-section wave-shaped threaded section from the head end to the tail end, and a grouting channel is formed in the axis of the rod body; the drill bit and the round nut are respectively mounted at the head and tail ends of the rod body; the anti-shearing tray, the constant-torque pressing sheet and the hexagon nut are arranged on the outer side of the tail-section wave-shaped thread section in a sleeving manner; the built-in mixer is inserted into the grouting channel; the drilling machine is connected with the drilling, sealing and injecting anchor rod through a monitoring sensor arranged outside the hexagon nut in a sleeving mode. A strain type force sensor, a rotating speed sensor, a high-frequency vibration sensor, a well deviation instrument and a load sensor are arranged in the monitoring sensor. The method comprises the steps that a drilling machine rotates forwards to drive a drill bit to conduct drilling operation, deslagging operation is conducted synchronously, and in the drilling process, various sensors are used for collecting various parameters in real time; pre-tightening is conducted through reverse rotation of the drilling machine; a built-in mixer is used for grouting operation; and blocking treatment. According to the system and the method, the operation process can be intelligently monitored.

The invention relates to the technical field of copper rod production, in particular to a high-frequency vibration rolling method, system and equipment for multi-pass continuous rolling of a copper rod, and the method comprises the following steps: acquiring an expected index of the copper rod, establishing a rolling process flow according to the expected index of the copper rod, and distributing continuous rolling passes according to the rolling process flow; calculating and setting corresponding high-frequency vibration frequency and rolling force for each continuous rolling pass; performing hardness detection on the production result of each continuous rolling pass, and calculating the physical structure and performance of the copper rod in the production process according to the hardness detection result; and the high-frequency vibration frequency and the rolling force are fed back and corrected for the fixed continuous rolling pass based on the expected indexes of the copper rod according to the physical structure and the performance of the copper rod. According to the invention, the problems of unstable surface quality, non-uniform crystal grains, energy waste and the like in the traditional copper rod production are effectively solved.

The invention discloses a rapid demolding device and method for a small prefabricated part, and relates to the technical field of prefabricated part production. The mold bearing table is mounted on the substrate of the demolding rack and is integrated with a multi-point temperature sensor and an acoustic vibration signal collector; the ejection demolding assembly is installed on the stand columns of the demolding rack in a liftable mode and comprises an ejection plate assembly, and an ejection force sensor and a high-frequency vibrator are arranged on the ejection plate assembly; the visual identification module is mounted on the demolding rack; and the controller is electrically connected with the multi-point temperature sensor, the sound vibration signal collector, the ejection force sensor, the high-frequency vibrator, the visual recognition module and a driving mechanism of the ejection demolding assembly. Multi-source sensing information is fused, the component condensation state and the demolding time are accurately judged, the ejection force and vibration in the demolding process are adaptively controlled, accurate and flexible control over the demolding time and process is achieved, and the demolding success rate and the component yield are remarkably increased.

The utility model relates to the technical field of water pump desilting, in particular to vertical water pump desilting equipment which comprises a bearing transmission mechanism, a high-frequency vibration mechanism installed on the bearing transmission mechanism and a vertical water pump installed on the high-frequency vibration mechanism. The bearing transmission mechanism comprises a transmission assembly, traction pieces installed on the transmission assembly, two outer frames connected to the top ends of the traction pieces and guide rods installed on the tops of the two traction pieces. After the vertical water pump is suspended and clamped and the vertical water pump in an overhead state is in an inclined state and performs high-frequency vibration, excess materials remaining in the water pump can be shaken off outwards from a filter screen at the moment, so that the water pump does not need to be put into clear water to be washed, and lossless dredging operation can be performed on the water pump; therefore, the inner wall of the used water pump cannot be corroded.

The invention relates to the technical field of vibration and noise control, discloses a new energy automobile motor high-frequency vibration and noise active suppression system and method, and aims to solve the problems of poor high-frequency vibration and noise suppression effect, real-time performance, adaptive capacity and system cost complexity of an existing new energy automobile motor. The method comprises the following steps: acquiring and preprocessing motor operation state data, extracting high-frequency harmonic characteristics, and generating predicted harmonic characteristics in combination with working condition prediction; and superposing the self-adaptive compensation quantity to a motor voltage instruction, and driving an inverter through pulse width modulation to realize active suppression of high-frequency vibration and noise. The system comprises a data acquisition preprocessing module, a harmonic feature extraction module, a working condition sensing prediction module, a self-adaptive compensation quantity generation module and a pulse width modulation correction module. By the adoption of the technical scheme, efficient, real-time and self-adaptive suppression of high-frequency vibration and noise of the motor can be achieved, the level of the high-frequency vibration and noise is remarkably reduced, the driving comfort is improved, and the complexity and cost of the system are optimized.

The invention relates to the technical field of oxytetracycline hydrochloride conveying, in particular to an oxytetracycline hydrochloride airflow conveyor which comprises an airflow feeding pump, an inner pipe discharging mechanism arranged on the airflow feeding pump, an outer pipe resonance mechanism arranged in the inner pipe discharging mechanism and a powder distributing and conveying mechanism arranged on the outer pipe resonance mechanism. And the air flow feeding pump is used for providing air flow kinetic energy for transferring the powdery oxytetracycline hydrochloride. An independent airflow feeding pump is arranged on a path for preparing oxytetracycline hydrochloride of a powder rotating roller, when the airflow feeding pump operates, constant-pressure airflow released outwards passes through an inner pipe discharging mechanism, thrust applied by part of air pressure can bear a pressure gasket to vibrate at high frequency along with transmission of part of airflow into a vibration bin assembly, and therefore the effect that oxytetracycline hydrochloride is subjected to high-frequency vibration is achieved. And finally, the inner pipe clamped by the plurality of pressure-bearing gaskets can continuously release the airflow outwards in a corrugated state, so that the loss of the powdery oxytetracycline hydrochloride on the pipe wall due to standing can be avoided.

The invention provides a precision injection mold data monitoring system, and relates to the technical field of data processing, and the system comprises a monitoring point positioning module which is used for setting a casting region monitoring point in an annular region with the radius of 5mm at the casting tail end of a mold, setting an ejection contact monitoring point in a circular region with the center diameter of 10mm of the contact surface of an ejection part, surface topography images of the area monitoring points and the ejection contact monitoring points are collected through an industrial camera, and contact pressure gradient data and high-frequency vibration energy signals are obtained. According to the method, the mold state is cooperatively analyzed, intelligent monitoring of the mold state and precision of maintenance decision are achieved, and the precision and efficiency of injection molding production and the mold life cycle management level are improved.

The invention provides an ultrasonic straight-blade cutter wear test device and method, and aims to simulate and research a wear evolution rule of a cutter in ultrasonic machining. The ultrasonic straight-blade cutter wear test equipment comprises a cutting system, a positioning system, a holding system, a cutter system and a test system. The cutting system outputs linear reciprocating motion to simulate a low-frequency contact period of a hole grid and a cutter; the positioning system achieves accurate tool setting, and it is ensured that a tool is just in contact with a sample piece; the holding system is used for fixing and tensioning the sample piece and maintaining a stable cutting condition; the cutter system applies high-frequency vibration to the ultrasonic straight-edge cutter to simulate a high-frequency vibration period in actual ultrasonic machining; the testing system monitors the contact condition of the cutter and the sample piece in real time and records the abrasion behavior. According to the ultrasonic straight-blade cutter wear test equipment, by simulating the superposition effect of a low-frequency contact period and a high-frequency vibration period, the cutter wear rule in an ultrasonic machining environment is truly revealed, and powerful technical support is provided for prolonging the service life of a cutter and improving the performance of the cutter.

The invention relates to a permanent magnet synchronous motor optimization method and system based on a novel topological structure. The method comprises the steps that parametric modeling is carried out through preset magnetic pole block parameters, preset magnetic barrier groove geometric parameters and preset asymmetric air gap parameters, and a variable topology model library is generated; through multi-physics field coupling simulation, dynamic eddy current distribution, a local demagnetization risk coefficient and a high-frequency vibration mode of the permanent magnet synchronous motor are calculated; constructing a multi-target optimization model for optimization through dynamic eddy current distribution, a local demagnetization risk coefficient and a high-frequency vibration mode, and generating a Pareto optimal solution set; and based on the manufacturing tolerance sensitivity parameter and demagnetization risk coefficient distribution in the solution set, constructing a topology fault-tolerant structure and obtaining a dynamic current compensation strategy, and generating a final optimization scheme. According to the method, through comprehensive application of multi-physical field coupling simulation, multi-objective optimization and a dynamic compensation strategy, the precision and scientificity of motor optimization are improved, and effective technical support is provided for design and manufacturing of the motor.

Disclosed are a method and system for blade tip timing measurement of full-frequency-domain vibration of a rotor blade. The method includes: identifying low-frequency, medium-frequency, high-frequency, and super-high-frequency mode parameters of the rotor blade to determine the number and mounting angles of sensors; identifying low-frequency vibration parameters based on blade tip timing according to blade tip vibration displacement; identifying medium-frequency vibration parameters based on blade tip timing according to blade tip vibration velocity; and identifying high-frequency vibration parameters based on blade tip timing according to blade tip acceleration and identifying super-high-frequency vibration parameters based on blade tip timing according to blade tip jerk. The present disclosure also provides a system for implementing the method for full-frequency-domain vibration measurement based on blade tip timing. The method for blade tip timing measurement of full-frequency-domain vibration extends the range of blade vibration frequency effectively measured by the blade tip timing technology.

The utility model relates to a device for quickly removing residual stress of a strong compression-resistant steel plate, which belongs to the technical field of metal material processing and comprises a fixing frame, bearing plates are fixed at the left end and the right end of the upper surface of the fixing frame, and a same top plate is fixed on the upper surfaces of the bearing plates. A vibration mechanism used for applying high-frequency vibration to the steel plate is arranged on the upper surface of the top plate, a fixing mechanism used for fixing the steel plate is arranged at the bottom of the right side of the fixing frame, and a controller is arranged on the left side of the fixing frame. And the fixing mechanism comprises a driving motor, a bidirectional screw rod, two screw sleeves, two connecting plates, two telescopic columns and two linkage blocks. According to the device for rapidly removing the residual stress of the high-compression-resistance steel plate, the technical problem of rapidly and efficiently removing the residual stress of the high-compression-resistance steel plate can be solved through the arranged fixing mechanism and vibrating mechanism, and meanwhile it is guaranteed that the performance of the treated steel plate is not affected; and the accuracy and the reliability of the processing process are ensured through the arranged real-time monitoring and controlling device.

The invention belongs to the technical field of cold-rolled sheet processing, and particularly relates to a physical defoaming alkali liquor circulation method which comprises the following steps: a foam capacitive monitoring array at the top of an alkali liquor tank generates a foam thickness gradient map in real time; real-time alkali liquor temperature, conductivity, circulating flow, strip steel running speed and historical foam thickness data are fused, a foam layer height prediction value is output, and when the prediction value exceeds a safety threshold value, a turbulence generator is automatically triggered to generate high-frequency pulse water flow; when the foam finally flows downwards to the top opening of the alkali liquor tank through the foam overflow pipe, the foam is crushed by high-frequency pulse water flow in the alkali liquor backflow pipeline and becomes alkali liquor to drop into the alkali liquor tank, the foam is physically crushed through fluid shear force and high-frequency vibration under the synergistic effect of the sectional type backflow pipeline and the capacitive foam monitoring array, the defoaming efficiency is high, and the defoaming effect is good. Dependent chemical defoaming agents are reduced, and the problems of strip steel surface residues and wastewater treatment are solved.

The invention discloses an anti-jamming coal mining drilling machine with drilling and multidirectional impacting functions and a using method thereof.The anti-jamming coal mining drilling machine comprises a drilling machine body, a high-pressure driving mechanism is arranged on the drilling machine body through a multidirectional guide rail mechanism, and a drilling assembly is connected with the high-pressure driving mechanism; when the drilling machine works, the high-pressure driving mechanism drives the drill rod and the drill bit to conduct rotary drilling, the high-frequency transverse vibration mechanism synchronously generates transverse high-frequency vibration, the high-pressure driving mechanism drives the drill rod and the drill bit to conduct rotary drilling, and the high-frequency transverse vibration mechanism drives the drill rod and the drill bit to conduct rotary drilling. The friction force between the drill bit and rock is reduced, debris accumulation is prevented, efficient deslagging is achieved, when hard rock or drill jamming occurs, the longitudinal vibration impact mechanism triggers longitudinal vibration, impact and drill jamming prevention functions are achieved through cooperative work of transverse vibration and longitudinal vibration, the drill jamming problem under the complex geological condition is effectively solved, the drilling efficiency and equipment reliability are improved, and the drilling cost is reduced. The device is suitable for drilling operation of mining roofs and baseplates, sides and the like.

The invention provides a moisture-resistant and high-temperature-resistant wire and a preparation method and application thereof. And each wire comprises a conductor, and a mica insulating layer, an inorganic fiber insulating layer, a high-temperature-resistant insulating paint layer, a molecular sieve moisture-resistant layer and an outer protective layer which are sequentially coated outside the conductor from inside to outside. The heat-resistant grade of the moisture-resistant and high-temperature-resistant wire can reach 600 DEG C; the characteristics of specific adsorption of the nanoscale molecular sieve on water vapor and desorption in a heating state are combined, so that the water vapor blocking function is achieved in a high-humidity environment, desorption can be achieved at a high temperature to remove residual water molecules, insulation failure caused by water vapor permeation can be reduced, the reliability is greatly improved, and the service life is greatly prolonged; good insulation performance can still be maintained after high-frequency vibration; the cable can be used in a high-temperature, high-humidity and high-frequency vibration environment, and the high-temperature resistance, the moisture resistance and the vibration resistance of a signal or power transmission wire are improved.

The invention discloses an unmanned aerial vehicle co-frequency resonance deicing device and a deicing method, and relates to the field of high-voltage overhead conductor deicing, an unmanned aerial vehicle device is provided with a deicing device, the deicing device comprises a microwave generator and an ultrasonic generator which are oppositely arranged, and a power transmission line is located between the microwave generator and the ultrasonic generator. Microwaves and ultrasonic waves emitted by the microwave generator and the ultrasonic generator face the power transmission line; the deicing device comprises a resonant frequency detection device, the resonant frequency detection device is used for obtaining the resonant frequency of the icing position of the power transmission line, the frequency of ultrasonic waves emitted by the ultrasonic generator is the same as the resonant frequency of the icing position of the power transmission line, and the frequency of microwaves emitted by the microwave generator is the same as the resonant frequency of the icing position of the power transmission line. The ice layer is cracked by utilizing high-frequency vibration heating generated by ultrasonic waves and microwaves, so that the purpose of removing the ice layer is achieved. According to the method, a power grid line does not need to be contacted, and line damage possibly caused by direct impact is avoided.

The invention relates to the technical field of tailing mud treatment, and discloses a solid-liquid separator for treating tailing mud, which comprises a support frame, the top of the support frame is fixedly provided with a vertical plate I and a vertical plate II, the outer wall of the vertical plate II is fixedly provided with a fixed seat, and the top of the fixed seat is fixedly provided with a central control box; a cross beam is fixedly assembled between the first vertical plate and the second vertical plate, a sliding groove is formed in the outer wall of the cross beam, a filter plate is arranged on the outer wall of the cross beam, a circular groove is formed in the inner wall of the filter plate, and a solid-liquid separation assembly is arranged on the inner wall of the circular groove. An electric telescopic rod II is started under the control of a weighing display instrument, so that an arc-shaped plate can lift a lapping block to move up and down, a filter plate can perform high-frequency vibration, a filter cake can quickly fall off from the filter plate, discharging is more thorough, meanwhile, the cleanliness of equipment is improved, and the device is high in discharging speed and convenient to use. And the influence of filter cake residues on the next filtering process can be effectively avoided, and the discharging efficiency is improved.

The invention discloses a method for suppressing OA-ICOS cavity mode noise by using active high-frequency vibration, which belongs to the technical field of off-axis integral cavity output spectrum, and comprises the following steps: acquiring off-axis integral cavity parameters; the method comprises the following steps: calculating initial cavity membrane density, generating excitation force on a rear high-reflectivity mirror of an off-axis integral cavity to enable the rear high-reflectivity mirror to vibrate along a cavity axis in a simple harmonic manner, adjusting cavity length change at high frequency, calculating a light spot deviation angle, calculating a back-and-forth circulation deviation angle, analyzing a central included angle between newly added light spots, the number and a re-incidence condition, and when a re-incidence state is met, calculating the initial cavity membrane density; or when an infinite off-axis state is met, the cavity mold density is increased. The invention provides a method for inhibiting the OA-ICOS cavity mode noise by utilizing active high-frequency vibration, a new vibration cavity (VC) scheme is provided to inhibit the cavity mode noise of an OA-ICOS sensor system, and the influence of vibration on the cavity mode density is researched theoretically for the first time. By analyzing the method, the cavity mode noise of the designed OA-ICOS sensor system is reduced by more than two times.

The invention discloses a gas turbine running state data regression prediction method based on a fusion network, a plurality of sensors are arranged at different positions of a gas turbine, and the prediction method comprises the following steps: obtaining multi-source heterogeneous real-time data of the gas turbine in a current control period, the multi-source heterogeneous real-time data comprises sensor time sequence data, high-frequency vibration data, environment working condition data and control instruction log data, and constructing a unified data representation matrix of the multi-source heterogeneous real-time data; and based on the unified data representation matrix, a thermal efficiency prediction value and an emission concentration prediction value of the gas turbine in the next control period are obtained through a dynamic weight fusion network. By constructing the uniform data representation matrix of the multi-source heterogeneous real-time data and combining the dynamic weight fusion network, the problems of insufficient spatial-temporal characteristic difference processing of the multi-source data and rigid dynamic weight distribution in the prior art are effectively solved.

The invention provides a structure health early warning method and system based on space-time correlation characteristics and digital twinning, and relates to the technical field of data processing. The method comprises the following steps: acquiring multi-source heterogeneous data of a target structure; performing dynamic sampling alignment and wavelet packet decomposition on the multi-source heterogeneous data to extract energy features to obtain synchronous data, and performing abnormal data filtering on the synchronous data to obtain cleaned fusion data; performing wavelet decomposition on a high-frequency vibration signal in the fused data to obtain a damage impact feature, performing time sequence processing on low-frequency temperature data in the fused data to obtain a temperature time feature, and performing dynamic graph convolutional network processing on strain data in the fused data to obtain a spatial correlation feature; constructing an input vector; calculating a damage degree index; and according to the damage degree indexes, early warning grades are divided, and corresponding control instructions are triggered for different early warning grades. By implementing the technical scheme provided by the invention, the accuracy of structural health early warning can be improved.

The invention relates to an active and passive hybrid vibration isolation test platform and a working method thereof. The active-passive hybrid vibration isolation test platform is composed of a main body device, a vibration sensing device, a vibration control device and an active-passive hybrid vibration isolation device. The active and passive hybrid vibration isolation devices are symmetrically arranged on the two sides of the armature and comprise supports, particle dampers and electromagnets, the electromagnets are supported above the armature through the supports, the supports are of hollow structures, damping particles are filled in the supports, and coils are wound on the electromagnets. A suspension controller in the active vibration isolation module controls the current of an electromagnet coil so as to attenuate a low-frequency vibration signal and realize active vibration control; and under the combined action of particle damping in the passive vibration reduction module, medium-frequency and high-frequency vibration signals are attenuated, and passive vibration control is realized. Compared with the prior art, the device has the advantages that the adjusting range of elasticity and damping parameters is expanded, and the vibration isolation stability is improved.

The invention relates to the technical field of steel strip cutting and slitting, in particular to cold-rolled steel strip slitting equipment which comprises a cutting mechanism, the cutting mechanism comprises a cutting knife used for cutting a steel strip, a first iron core is arranged on the side wall of the cutting knife in a sliding mode, and a first electromagnetic coil making contact with the first iron core is arranged on the outer gap of the first iron core in a sleeving mode; and the bottom end of the cutting knife is fixedly connected with a second iron core. After a steel belt is placed on the top of the cutting table, the steel belt can push a rotating wheel and a rolling frame to synchronously move upwards, the telescopic end of a first elastic telescopic rod drives a first conducting strip to slide on a first resistance plate, the current of a first sliding rheostat is detected through a current detection module in a PLC, and therefore the thickness of the steel belt is fed back; according to the thickness of the steel belt, the PLC controls current introduced into the first electromagnetic coil and the second electromagnetic coil, so that the cutting knife generates proper frequency to perform high-frequency vibration up and down and left and right.

The invention relates to a robot multi-frequency vibration composite suppression method and system based on inertia disturbance analysis. The method comprises the steps of obtaining dynamic operation data in the operation process of a robot; the operation data are input into an inertia disturbance analysis module, and a low-frequency vibration source caused by a mechanical structure and a high-frequency vibration source caused by a driving system can be accurately recognized; a disturbance frequency distribution diagram is generated, according to the distribution diagram, a self-adaptive filtering algorithm is adopted to suppress a high-frequency vibration source, a compensation algorithm based on model prediction control is adopted to suppress a low-frequency vibration source, the two strategies are cooperatively processed to generate a comprehensive control instruction, the advantages of the two algorithms are fully played, and effective composite suppression of multi-frequency vibration is achieved.

The invention relates to the technical field of measurement, in particular to an integrated sensing module for a dynamic weighing system, which comprises a physical domain, an environmental domain and a virtual domain, and realizes dynamic adjustment of parameters through cross-domain interaction so as to deal with high-frequency vibration and rapid temperature difference change in a complex environment. The physical domain is responsible for collecting multi-source data, the environment domain senses external interference in real time, and the virtual domain realizes time sequence feature extraction and dynamic model updating by combining the optimization capability of a recurrent neural network and reinforcement learning. According to the technical scheme, the real-time performance and adaptability of the system are remarkably improved, the environment change trend can be accurately predicted, the weighing strategy is adjusted in advance, and the error rate is controlled to be at an extremely low level. Meanwhile, by combining a negative feedback mechanism and objective function optimization, the sampling frequency is dynamically adjusted, and the energy consumption is reduced on the basis of guaranteeing the data processing efficiency. And deep fusion of wavelet decomposition, a dynamic normalization algorithm and a neural network model is adopted, so that the accuracy and stability of data processing are greatly enhanced.

The invention discloses ultrasonic high-speed welding equipment and a welding method.The equipment comprises a rack, an electric control mechanism, an executing mechanism and a monitoring mechanism, and the executing mechanism comprises a first lifting assembly, a linear driving part, a welding executing assembly and a second lifting assembly; the linear driving piece is used for generating pressure for pressing the welding execution assembly on the to-be-welded piece, and the welding execution assembly is used for providing high-frequency vibration to achieve ultrasonic welding; the monitoring mechanism is used for monitoring the pressure of the linear driving part on the welding execution assembly, the pressure of the second lifting assembly on the bottom die, the real-time position of the welding execution assembly and the real-time position of the bottom die. The electric control mechanism is used for controlling the execution mechanism to operate according to a preset program and monitoring data obtained from the monitoring mechanism. According to the scheme, the welding efficiency can be improved, and pseudo soldering is reduced.

The invention belongs to the technical field of automobile vibration reduction, and provides a frequency-division double-closed-loop control method, system, medium and equipment for a vibration absorber, and the method comprises the steps that the vehicle body state of a vehicle is monitored in real time, and the vibration reduction state of the vehicle is determined based on the vehicle body state; if the vehicle is not in the vibration reduction state, a correction strategy is executed; dynamically capturing full-band vibration of the vehicle based on the correction strategy, obtaining a time domain signal and converting the time domain signal into a frequency domain signal; the frequency domain signal is processed, the current vibration type of the vehicle is determined, and a vibration reduction strategy corresponding to the current vibration type is determined based on the current vibration type; and the release current and the magnetorheological fluid state of the vehicle are regulated and controlled based on the vibration reduction strategy, and vibration reduction of the vehicle is completed. According to the invention, on the basis of effectively eliminating vibration invalid signals and eliminating interference energy, the limitation of low-frequency and high-frequency vibration dual suppression is reduced, broadband coverage is realized, the control precision is high, and the vibration reduction effect is good.

A battery cap welding machine comprises a base, and a welding mechanism and a cleaning mechanism are arranged on the base. The cleaning mechanism comprises an ultrasonic unit, a laser generator and a dust collection unit, and the ultrasonic unit, the laser generator and the dust collection unit cooperate to rapidly strip, gasify and remove welding slag; the ultrasonic unit makes contact with the welding position through the solid-state coupling piece and is used for generating high-frequency vibration so that welding slag can be preliminarily loosened and stripped from the welding face. The laser generator is used for focusing residual welding slag parts and instantly gasifying stubborn welding slag by using high energy of laser; and the dust suction unit sucks and cleans the welding slag stripped and gasified by the ultrasonic unit and the laser generator through a plurality of dust suction ports. According to the invention, through the ultrasonic, laser and dust collection units in the cleaning mechanism, the residual stubborn welding slag after the welding of the battery cap is removed in all directions, so that the welding slag cleaning efficiency and quality are greatly improved, the potential problems such as short circuit caused by the residual welding slag are reduced, the product yield is remarkably improved, and the battery production efficiency is improved.

The invention relates to the technical field of hemispherical harmonic oscillator assembly, in particular to a welding method and device for an assembled hemispherical harmonic oscillator, and the device comprises a vibration welding platform and a clamping assembly located above the vibration welding platform; the vibration welding platform is used for bearing the sensitive base and providing a thermal field and a vibration field needed by welding, and the clamping assembly is used for clamping the center shaft and sending the center shaft into a center hole of the base. A heating unit and a composite vibration ultrasonic transducer are arranged in the platform, and the platform is configured to apply high-frequency vibration formed by superposition of vertical longitudinal waves and horizontal torsional waves to the base. The high-frequency vibration thixotropic effect is used for reducing the viscosity of the molten solder, the ultrasonic cavitation effect is used for forcibly discharging bubbles at the bottom of the blind hole, and the sound radiation pressure generated by the vibration standing wave field is used for driving the center shaft to achieve friction-free self-centering in the hole. According to the device, the problems of air bolt pseudo soldering and rigid assembly clamping stagnation in the traditional process are solved, and the assembly coaxiality and the connection strength of the harmonic oscillator are remarkably improved.

The utility model discloses a heater with a cleaning device, the heater is provided with a heating pipe, the cleaning device comprises a dry ice spraying device, the spraying opening of the dry ice spraying device faces the heating pipe, and the dry ice spraying device is used for spraying dry ice to the heating pipe; the output end of the ultrasonic device faces the heating pipe, and the output end of the ultrasonic device transmits ultrasonic waves into the dry ice medium sprayed by the dry ice spraying device. According to the utility model, stains are cleaned in a manner of spraying dry ice and superposing ultrasonic waves, the dry ice can effectively remove oil stains and impurities at low temperature, chemical solvents are not needed, the environment is not polluted, residues are not generated after sublimation, and the cleanliness of the heater is ensured; and high-frequency vibration of the ultrasonic waves can not only vibrate out stains in gaps of the heater, but also promote the reaction between the dry ice and the stains, so that the cleaning effect of the cleaning device is further improved.