29 results about "Resonance vibration" patented technology

An ultrasonic transducer array of this invention includes a rigid support plate with a through-hole group including through-holes, a flexible resin film fixed to the support plate so as to cover the through-holes, and piezoelectric elements fixed to the flexible resin film so that middle portions overlap the corresponding through-holes and peripheral portions overlap the support plate, wherein the piezoelectric elements include transmission piezoelectric elements forming transmission transducers that generate ultrasonic waves in response to driving voltage signal having a predetermined driving frequency and one or plural reception piezoelectric elements forming one or plural reception transducers that generate reception voltage signals in response to ultrasonic waves, and wherein the transmission transducer is of a non-resonant type that generates ultrasonic wave without resonant vibration in response to the driving voltage signal and the reception transducer is of a resonant type that performs resonant vibration in response to ultrasonic wave having a frequency corresponding to the driving frequency.

The invention provides a self-adaptive vacuum defoaming process optimization method based on an intelligent control system, and aims to solve the problems of micro-bubble residue, too high energy consumption and the like caused by the fact that a traditional defoaming technology cannot adapt to liquids with different viscosities, and accurate defoaming is realized through a multi-dimensional sensing technology and strategy generation and regulation. Presetting a high-precision vacuum parameter and a viscosity grading strategy; establishing a liquid characteristic vector model by adopting a YOLOv7 and Hough transformation algorithm, and matching a historical optimal strategy in combination with weighted cosine similarity; generating a defoaming strategy based on the pre-training network and a multi-objective optimization algorithm, and verifying the defoaming strategy in the virtual environment; defoaming is carried out in four stages, and efficient foam breaking is achieved through sectional PID control, resonance vibration and cooperation of a two-stage pump; a Kalman filtering algorithm is integrated, pressure, temperature and vibration data are fused, and vacuum pump power and a heating strategy are adjusted; and constructing a multi-index evaluation system, and driving strategy iterative optimization through a reward signal.

The invention discloses an all-series recovery process for waste lithium ion batteries, which belongs to the field of lithium battery regeneration and comprises the main process steps of pretreatment of the waste lithium ion batteries, electrolyte recovery through microwave baking, obtaining of positive plates and negative plates through eddy current separation and separation of positive and negative black powder and metal foil through infrared irradiation. Wherein the electrolyte is recovered through microwave baking, so that the electrolyte can be quickly vaporized and then condensed and recovered under the action of microwaves by utilizing the strong polarity of the electrolyte, and therefore, the electrolyte can be efficiently separated, the removal effect is more thorough, and the problem of electrolyte pollution cannot be generated in the process. According to the infrared irradiation separation process, the absorption capacity of different adhesives to different infrared wavelengths can be utilized, and the molecular chains of the adhesives are broken and the positive and negative electrode powder and the metal foil can be automatically stripped by adjusting the irradiation infrared band and generating resonance vibration, so that the residues of the adhesives are greatly reduced; the recovery rate of the waste lithium ion battery and the purity of the recovered material are improved.

The utility model discloses a stepping motor shock pad, which relates to the technical field of peristaltic pump noise reduction and comprises a front support plate, an elastic connector and a rear support plate. The front supporting plate is connected with the stepping motor through four threaded holes, the rear supporting plate is connected with the motor support through four through holes, the front supporting plate and the rear supporting plate are arranged in a staggered mode at 45 degrees, and screw interference is avoided. The elastic connecting body is arranged between the front supporting plate and the rear supporting plate and used for connecting the front supporting plate and the rear supporting plate and playing a role in elastic damping. The elastic connecting body is integrally connected with the front supporting plate and the rear supporting plate, and high connecting strength and stability are achieved. By optimizing the structural design and material selection, resonance vibration is effectively isolated, noise is reduced, and the vibration isolator is suitable for various devices and application scenes and has good universality and market prospects.

The invention provides an additional locally slotted acoustic black hole board, which is mounted on a main board to be damped and comprises a black hole board main body and a damping layer, the black hole board main body is fixed on the main board to be damped and comprises a uniform thickness area and one or more acoustic black hole areas, one or more weight reduction grooves are formed in the uniform thickness area, and the damping layer is arranged on the damping layer. And a damping layer is arranged on the acoustic black hole area. According to the additional type locally-slotted acoustic black hole plate, by forming the weight reducing grooves in the non-key area of an original additional acoustic black hole plate structure, redundant materials are removed, the weight reduction of an additional structure is achieved, meanwhile, the local resonance vibration reduction effect and the energy gathering capacity of the acoustic black hole effect on bending waves are kept, and the acoustic black hole plate has the advantages of being simple in structure and convenient to use. Finally, broadband vibration control of the mainboard is achieved under the low additional mass, the overall structure meets the requirement for light weight, and the structure is particularly suitable for a plate-shaped system sensitive to the additional mass.

The invention discloses a vibration reduction device and method for a CPU heat dissipation module. The vibration reduction device comprises a CPU body, a mainboard and a radiator and further comprises a buckle, a spring screw, a mounting sleeve, a primary vibration reduction part and a secondary vibration reduction part. In the working state, the abutting force of the periphery of the primary vibration reduction piece and the circumferential wall of the mounting sleeve is larger than that of the top protruding part and the inner circumferential wall of the top of the mounting sleeve. The abutting force between the inner peripheral wall of the bottom of the secondary damping piece and the rod bottom of the spring screw is larger than that between the inner peripheral wall of the top of the secondary damping piece and the rod upper portion of the spring screw. And the cavity parts of the primary vibration reduction piece and the secondary vibration reduction piece are in an expansion state. The radiator has the advantages that resonance of the main board and the radiator is weakened through the primary vibration reduction part and the secondary vibration reduction part, and the influence of resonance vibration is weakened.

The present application relates to the technical field of metallurgy, and discloses a steel ingot dynamic solidification system and a solidification method, wherein the dynamic solidification system comprises a pouring system, a vibration excitation device and a controller, the pouring system comprises a pouring base, multiple sets of steel ingot molds and a pouring pipe, the multiple sets of steel ingot molds are fixed on the top of the pouring base, and the pouring pipe is in communication with the multiple sets of steel ingot molds; the vibration excitation device is a non-insertion type vibration excitation device, the vibration output end of the vibration excitation device is connected with the pouring base; and the controller is used for adjusting the vibration excitation frequency of the vibration excitation device according to the overall mass of the vibration receiver composed of the pouring base, the pouring pipe and the multiple sets of steel ingot molds, so that the vibration excitation frequency of the vibration excitation device is equal to the natural frequency of the vibration receiver to realize the resonance of the pouring system. The present application directly applies the resonance vibration excitation force to the pouring base by using the vibration excitation device, realizes multi-mode resonance, improves the production efficiency, does not invade the molten steel, fundamentally avoids the burning of the vibration rod and the risk of the falling and remaining of the attached oxide skin and coating, and guarantees the purity of the steel ingot.

The application discloses a kind of stiffness self-tuning's semi-active-active compound intelligent vibration absorber based on voice coil motor active force compensation, belong to vibration control technical field, for solving the problem of existing vibration absorber tuning band narrow, stiffness regulation and active integration low, large volume.This application includes bottom plate, moving mass, self-tuning variable stiffness mechanism and active mechanism;Self-tuning variable stiffness mechanism includes stepper motor, with reverse thread's step screw rod, upper sliding nut, lower sliding nut, pairs of leaf spring and linear slide rail slider assembly;Active mechanism is coaxially arranged voice coil motor on the upside.The stepper motor drives screw rod rotation, drives two opposite rotating sliding nut relative motion, changes leaf spring working span to realize stiffness online self-tuning, and voice coil motor provides active control force.The application is compact in structure, and high in integration, can realize wide-frequency adaptive resonance vibration absorption, has passive tuning stability and active control wide-frequency adaptability, and has excellent damping effect.

The invention relates to a vibration reduction type light steel-light concrete floor structure for a steel structure modular building, the steel structure modular building and a manufacturing method, and the floor structure comprises side keels which form a side keel frame matched with a bottom frame beam of the steel structure modular building; the main keels are arranged in the side keel frame in parallel at intervals in the transverse direction, the two ends of each main keel are connected with the longitudinal side keels respectively, and a vibration reduction cavity is formed in each main keel in the length direction of the main keel; the resonance vibration reduction device is embedded in the vibration reduction cavity in the length direction of the main keel; the steel meshes are laid on the upper surface and the lower surface of the side keel frame; the light concrete is poured in the frame space defined by the side keels and the main keels, and concrete protection layers are formed on the upper surface and the lower surface of the light concrete. The vibration reduction type light steel-light concrete floor slab structure is light in weight, meanwhile, floor slab vibration caused by pedestrian loads can be reduced, the requirements for bearing capacity and comfort are met, and the weight of the module structure is greatly reduced.

The disclosed damper is designed to minimize first-mode vibration wind-induced resonance in tubular steel lightning masts used in electric substations. It employs a hanging cable system threaded through washers and variously sized caster wheels, addressing resonance vibrations that can lead to structural fatigue and failure. This design ensures consistent engagement with the structure, even with tapered walls, by utilizing different diameter caster wheels at various elevations.

The disclosed damper is designed to minimize first-mode vibration wind-induced resonance in tubular steel lightning masts used in electric substations. It employs a hanging cable system threaded through washers and variously sized caster wheels, addressing resonance vibrations that can lead to structural fatigue and failure. This design ensures consistent engagement with the structure, even with tapered walls, by utilizing different diameter caster wheels at various elevations.

The invention discloses a vibration frequency test bench and method for a blade disc, and the test bench comprises a rotor mechanism which is used for driving the blade disc to vibrate, a drive device which is used for driving the rotor mechanism, and a vibration detection device. The rotor mechanism comprises a bearing support, a rotor shaft rotationally arranged on the bearing support and a driven bevel gear used for driving the rotor shaft to rotate, the driving device comprises a motor support, a driving motor arranged on the motor support and a driving bevel gear arranged on an output shaft of the driving motor, and the blade disc is installed on the rotor shaft. The driving bevel gear is meshed with the driven bevel gear, exciting force under meshing frequency is generated through transmission errors of the driving bevel gear and the driven bevel gear so as to excite resonance of the blade disc in all directions, and the vibration detection device is used for detecting the vibration frequency of the blade disc; the device is ingenious in structure, can completely cover the frequency measurement requirement of the measured blade disc, can accurately determine the vibration frequency of the blade disc, and is suitable for blade discs of different models.

The resonance-free vibratory hammer comprises a machine shell, the machine shell is rotationally provided with a plurality of eccentric blocks, the eccentric blocks are rotationally arranged in the machine shell through rotating shafts, the rotating shafts are in linkage connection, and the machine shell is provided with a driving oil cylinder located between the rotating shafts. The driving oil cylinder is in linkage connection with the rotating shafts so that the driving oil cylinder can adjust the phase angle of the eccentric blocks, the rotating shafts are evenly distributed on the upper side and the lower side of the cylinder body so that the eccentric blocks can be vertically arranged on the machine shell, the machine shell provides a mounting carrier for all components, the eccentric blocks are rotationally arranged in the machine shell through the rotating shafts, and the rotating shafts are in linkage through gears. The phase angle of the eccentric block is adjusted through the driving oil cylinder, so that the starting vibration frequency crosses a resonance area, resonance is avoided, and resonance harm is reduced.

The invention discloses an integrated alkane olefin efficient gasifier, which belongs to the technical field of gasifiers, and comprises a support frame, a plurality of finned tubes are fixedly connected in the support frame, the bottom of the support frame is connected with a vibration base, when strong airflow passes through the finned tubes, the finned tubes resonate, the vibration base drives the finned tubes to shake through the support frame, and the finned tubes are separated from the vibration base. And the top of the supporting frame is fixedly connected with a wind receiving plate, the wind receiving plate receives wind energy and transmits the wind energy to the vibration base, and therefore the shaking amplitude of the finned tube is further amplified. Through a multi-stage vibration amplification mechanism, the vibration amplitude of the finned tube is remarkably enhanced, effective defrosting is achieved, collection and transmission of natural wind energy are optimized through the design of the wind receiving plate, the vibration efficiency is improved, stable operation of a vibration system is ensured through the elastic assembly, the influence on the supporting frame is reduced, and the defrosting stability of equipment is improved.

The invention provides a self-tuning mass damper and a tuning method. The damper comprises a mounting base, a tuning mass unit, a frequency modulation mechanism, a sensor unit, a control unit and a self-energizing unit. The tuned mass unit is connected between the mounting base and the mass block through the elastic supporting piece; the frequency modulation mechanism adjusts the inherent frequency of the system in real time by changing the rigidity of the elastic supporting piece; the sensor unit synchronously acquires vibration signals of the vibration-damped structure and the mass block; the control unit controls the frequency modulation mechanism to act according to a signal analysis result, so that the inherent frequency of the system tracks the dominant frequency of the vibration-damped structure, the vibration phase of the mass block is kept to be lagged by 90 degrees, and anti-resonance vibration damping is achieved; the self-energized unit is integrated in the mass block, and vibration mechanical energy is converted into electric energy to supply power to the whole system. According to the invention, frequency adaptive vibration control without external power supply is realized, and the vibration treatment problem caused by frequent change of the structure frequency due to change of working conditions is effectively solved.

The present application relates to the technical field of screening equipment, and particularly relates to a counter-resonance vibrating screen, which comprises a vibration exciter, the top of the vibration exciter is connected with one side of an elastic body, the other side of the elastic body is connected with a screen box, wherein the elastic body comprises a plurality of main vibration springs, the main vibration springs are in a cylindrical structure, the axial direction of the main vibration springs is arranged in parallel with the screen surface of the screen box, one side of the outer circumferential surface of the main vibration springs is connected with the vibration exciter, the other side of the outer circumferential surface of the main vibration springs is connected with the screen box, and the vibration exciter and the screen box are oppositely arranged with respect to the main vibration springs. The present application has the beneficial effect that when the vibration exciter vibrates to make the vibration table vibrate, due to the limitation of the structural shape of the main vibration springs, the main vibration springs can only elastically deform in the direction perpendicular to the axial direction of the main vibration springs to transmit the vibration of the vibration table to the screen box, the torsion in the left-right direction of the main vibration springs is greatly reduced or even eliminated, and finally the screen box can only vibrate in the direction perpendicular to the screen surface, and a limiter is not needed.

The invention discloses a permanent magnet reluctance motor rotor with low electromagnetic noise and a motor, and belongs to the technical field of permanent magnet reluctance motors. Wherein rotor slotting forms magnetic barriers, a magnetic pole is formed in an area where each group of magnetic barriers are located, the magnetic barriers are asymmetric about a q axis of a geometric center line of the magnetic pole, and a combination of tail angles of the magnetic barriers on two sides of the magnetic barriers is set according to the following mode: extracting a resonance inherent frequency and a resonance vibration mode order in a whole machine mode according to a motor mode vibration mode; extracting air gap radial and tangential flux densities in the operation process of the motor, and calculating air gap radial and tangential electromagnetic forces acting on stator teeth according to a simplified form of a Maxwell stress tensor equation; performing two-dimensional Fourier decomposition on the electromagnetic force to obtain electromagnetic force harmonic waves under each time frequency and space order; and determining a magnetic barrier tail angle combination by taking the minimum resonance inherent frequency, the resonance mode order and the electromagnetic force harmonic density under the corresponding order of the cogging modulation effect as criteria. The rotor is designed through the combination of the magnetic barrier tail angle calculated by the method disclosed by the invention, and the electromagnetic noise can be effectively reduced.

The disclosed damper is designed to minimize first-mode vibration wind-induced resonance in tubular steel lightning masts used in electric substations. It employs a hanging cable system threaded through washers and variously sized caster wheels, addressing resonance vibrations that can lead to structural fatigue and failure. This design ensures consistent engagement with the structure, even with tapered walls, by utilizing different diameter caster wheels at various elevations.

Fluid pump device (200) for generating sound waves in an audible range comprising: - a channel structure (226) with at least two channels (228, 230) that are coupled and each have a volume (208, 210), wherein the at least two channels (228, 230) are separated by at least one inner channel wall (214.3), - one or more ultrasound generating elements (202) which are arranged either transversely or parallel to the channels (228, 230) and can be operated at a frequency to pump defined volumes of fluid between the respective volumes (208, 210) of the channels (228, 230) with a variable pumping direction, and - at least one valve structure (212), wherein the at least one valve structure (212) is actively controllable and is designed such that at least one valve structure (212) can be operated in both a pumping and a suction state and exhibits a vibration in resonance with the ultrasonic vibration of an ultrasonic source to generate effective ultrasonic modulation, and - at least one excitation mechanism for stimulating one or more valve structures (212).

The numerical control device (1) controls vibration cutting, which relatively vibrates a workpiece attached to a spindle of a machine tool and a cutting tool attached to the machine tool, and changes the vibration frequency of the vibration cutting in accordance with changes in the rotational speed of the spindle. The numerical control device (1) includes a resonance determination unit (433) that compares the natural frequency of the machine tool with the vibration frequency of the vibration cutting to determine whether resonance occurs in the machine tool, and a vibration waveform correction unit (434) that, if it is determined that resonance will occur, corrects the acceleration of the vibration waveform of the vibration cutting so that resonance does not occur while maintaining the number of vibrations of the vibration cutting per rotation of the spindle.

The invention belongs to the technical field of industrial automation and Internet of Things, and provides an Internet of Things data acquisition and analysis system for a stacking production line, which comprises the following steps: dividing historical grabbing into normal grabbing and deviation grabbing, determining a deviation threshold value, and performing consistency analysis on deviation characteristics and resonance characteristics of deviation grabbing, so as to obtain a data acquisition result of the stacking production line; whether deviation grabbing is caused by resonance type vibration or not is judged, resonance deviation grabbing is recognized in deviation grabbing, statistical analysis is conducted on the resonance type deviation grabbing, whether the resonance deviation phenomenon exists or not is judged, if yes, multiple resonance deviation risk groups are obtained through clustering, and the relative weight difference of materials and the conveying belt speed critical value are determined; and finally, through real-time comparison and pre-judgment of risks and real-time coordinate correction, accurate recognition, rule quantification and active counteracting of grabbing deviation caused by resonance are achieved, the empty grabbing and deviation grabbing rate of a stacking production line is reduced, and the stacking efficiency and operation stability of an automatic stereoscopic warehouse are improved.

The application discloses a kind of vibration frequency test bench and method for blade disc, including for driving blade disc vibration rotor mechanism, for driving the driving device of rotor mechanism and vibration detection device, rotor mechanism includes bearing support, rotationally arranged on bearing support rotor shaft and for driving rotor shaft rotation driven helical gear, driving device includes motor support, driving motor is arranged on motor support and driven helical gear is arranged on driving motor output shaft Active helical gear, blade disc is installed on rotor shaft, active helical gear is engaged with driven helical gear, and the exciting force under meshing frequency is generated by the transmission error of active helical gear and driven helical gear, to excite the resonance of each direction of blade disc, vibration detection device is used to detect the vibration frequency of blade disc;Its structure is ingenious, can completely cover the frequency measurement requirement of measured blade disc, can accurately determine the vibration frequency of blade disc, and applicable with different models of blade disc.

The invention provides an additional local slotted acoustic black hole beam, which is mounted on a structure to be damped, and comprises a black hole beam main body and a damping layer, the black hole beam main body is fixedly arranged on the structure to be damped, the black hole beam main body comprises a uniform thickness area and an acoustic black hole area which are connected with each other, one or more groups of weight reduction grooves are formed in the uniform thickness area, and the damping layer is arranged in the acoustic black hole area. The damping layer is disposed on the acoustic black hole area. According to the structure, the weight reduction grooves are formed in the non-key area of an original additional acoustic black hole beam structure, redundant materials are removed, light weight of the additional structure is achieved, meanwhile, the local resonance vibration reduction effect and the energy gathering capacity of the acoustic black hole effect on bending waves are kept, and finally broadband vibration control over the main beam is achieved under the low additional mass. And the whole structure meets the requirement for light weight, and is particularly suitable for a beam-shaped system sensitive to additional mass, and particularly suitable for vibration reduction of beam-shaped structures such as beam-shaped components in an automobile body and frame beams of aerospace vehicles.

Viscous damper apparatus and associated methods to control a response to a resonant vibration frequency are disclosed. An apparatus to support an aircraft engine includes a thrust link including a forward end and an aft end, the forward end of the thrust link coupled to the aircraft engine, and a damper including a piston rod coupled to the aft end of the thrust link, the piston rod including a piston, and a chamber including a fluid, the piston to move within the chamber.

Viscous damper apparatus and associated methods to control a response to a resonant vibration frequency are disclosed. An apparatus to support an aircraft engine includes a first thrust link including a forward end and an aft end, the forward end of the first thrust link coupled to the aircraft engine, a second thrust link including a forward end and an aft end, the forward end of the second thrust link coupled to the aircraft engine, and a damper coupled to the aft end of the first thrust link and to the aft end of the second thrust link.

The application provides a kind of exhaust system vibration frequency test and endurance test method, the method comprises: exhaust system is arranged according to the whole vehicle arrangement relationship on exciter, vibration frequency test is carried out to exhaust system by exciter;At a preset vibration acceleration, by low to high to exhaust system with a preset speed is scanned vibration, and again from high to low is scanned vibration;The strain value of each preset test position in exhaust system is obtained, the resonance frequency of each preset test position is determined based on the strain value;Resonance vibration is carried out at each resonance frequency, and vibration acceleration is gradually increased until the strain peak value of any preset test position matches the maximum strain value of whole vehicle test;And endurance test evaluation is carried out to exhaust system.The exhaust system is tested and evaluated by the application, which can solve the problem of high cost of exhaust system test and evaluation in the prior art, and the test result does not have too high reference value.

The present application relates to a kind of vibration device and method for reducing internal friction of metal parts, and vibration device includes vibration generating mechanism, two support mechanisms and clamping mechanism;Vibration generating mechanism includes elastic support, counterweight and vibration generator, the elastic support is fixed to the bottom of the counterweight, the counterweight is elastically supported on base surface by elastic support, the vibration generator is fixed to the central top surface of the counterweight;Two support mechanisms are located at the two sides of the vibration generating mechanism, for supporting the node position of part bending mode;Clamping mechanism is used to clamp the wave crest position of part bending mode, and is fixedly connected with the counterweight by connecting mechanism.The present application constructs efficient vibration transmission system, utilizes resonance vibration to make part internal micro-deformation, promotes dislocation recombination, significantly reduces the internal friction of part, with the advantages of simple structure, convenient operation, low cost, wide application range.

The invention relates to methods of producing colloidal solutions of metals (copper, molybdenum, zinc, magnesium, silver) by using resonant vibration to separate particles and then cryogenically freezing same, and is intended for use in various fields of technology, biology and medicine. What is proposed is a method of producing a collodial solution of a metal selected from among copper, molybdenum, zinc, magnesium and silver, which comprises subjecting a cleaned billet of metal placed in distilled or deionized water to a resonant acoustic effect using an ultrasound generator and obtaining nanoparticles of the metal which are then subjected to cryogenic freezing, after which controlled cryogenic thawing is carried out and a stable colloidal solution of nanoparticles having a size of 1-10 nm is obtained. The proposed technique makes it possible to obtain nanoparticles having a size of from 5 to 50 nm in a resonant crushing step, with the possibility of a subsequent reduction to 1-10 nm in a cryogenic thawing step, to achieve highly stable colloidal solutions without using chemical stabilizers, thus preventing the formation of toxic byproducts, and to extend the storage life to colloids to 1 year.

The invention relates to a device (10) for transmitting planar mechanical vibrations to flowable media. The device (10) is characterized in that the amplitudes to normal of the planar contact surface points of a resonator (12) are substantially uniform during a resonant vibration and an amplitude vector in the contact surface points of more than 80 percent of a contact surface is substantially parallel to the normal vector of these contact surface points.