201 results about "Axial vibration" patented technology

The invention relates to a damping spring device suitable for industry or life, in particular to a magnetic damping spring. The magnetic damping spring comprises a supporting cylinder, a force guiding piston, a force guiding piston blocking piece, a supporting rod and two or more magnets. The force guiding piston blocking piece is arranged on the upper portion of the supporting cylinder. The supporting cylinder is of a cylindrical structure, one end of the supporting cylinder is sealed and is a bottom surface, and the other end is of an opening structure for the supporting rod to penetrate; the lower end of the supporting rod penetrates through the force guiding piston blocking piece to be connected with the force guiding piston, and the upper end extends out of an opening in the upper end of the supporting cylinder. A groove is formed in the inner bottom surface of the supporting cylinder, and a magnet A is placed in the groove; a groove for placing the magnet B is formed in the lower bottom surface of the force guiding piston; the supporting rod can conduct resultant force of vertical vibration generated by axial vibration, horizontal vibration and vertical vibration to the force guiding piston, the force guiding piston drives the magnet B to extrude downwards to generate repulsive force which is gradually increased with the distance space of the magnet A, the repulsive force is used for buffering vertical vibration force conducted by the force guiding piston, and therefore the damping effect is achieved.

The invention provides a method and equipment for calculating hysteresis loss of an axial electromagnetic bearing, and belongs to the technical field of hysteresis loss calculation. The method comprises the following steps: establishing an equivalent magnetic circuit model; under the condition of axial vibration of the thrust disc, magnetomotive force is calculated, and total dynamic magnetic flux is determined through an equivalent magnetic circuit model; establishing a quantitative relationship between any two of the maximum magnetic flux density amplitude, the magnetic hysteresis loss and the angle parameter representing the magnetic hysteresis effect; taking magnetomotive force as magnetic field excitation, taking total dynamic magnetic flux as magnetic field response, and constructing complex permeability based on a quantitative relation; updating the equivalent magnetic circuit model by using the complex permeability; solving the maximum magnetic flux density amplitude of each region of the iron core under the dynamic working condition through iterative calculation; calculating the hysteresis loss of each region based on the quantitative relation and the maximum magnetic flux density amplitude of each region; and the total magnetic hysteresis loss is calculated. Based on the method, the invention further provides calculation equipment for the hysteresis loss of the axial electromagnetic bearing. According to the method, the hysteresis loss of the axial electromagnetic bearing under the dynamic operation condition can be accurately calculated.

Disclosed is a multi-modal and multi-degree-of-freedom piezoelectric active vibration isolation platform and a working method therefor. The piezoelectric active vibration isolation platform includes an upper platform, a lower platform, a control module, and four vibration isolation modules, where the vibration isolation module includes a passive vibration isolation unit and an active vibration isolation unit; the passive vibration isolation unit includes an upper connector, a lower connector, a cross Hooke hinge, and a first acceleration sensor; the active vibration isolation unit includes a fixed beam, a pre-tightening bolt, a second acceleration sensor, and a driving component; the platform can provide active vibration isolation for the longitudinal (axial) vibration and the bending vibration in any radial direction of a vibration isolation object, and has the advantages of fast response, resistance to electromagnetic interference, and light weight.

The invention relates to the technical field of medical apparatuses and instruments, and provides a portable electric vibration micro fracture device which comprises a holding part, one end of the connecting rod assembly is connected with the holding part; the first end of the bent connector is detachably connected with the end, away from the holding part, of the connecting rod assembly, the second end of the bent connector is provided with an execution piece used for bone tissue punching, the interior of the bent connector is detachably connected with an axial vibration driving piece, and the axial vibration driving piece acts on the execution piece and is used for driving the execution piece to reciprocate in the axial direction of the axial vibration driving piece; the power supply assembly is embedded in the holding part and is electrically connected with the vibration driving assembly; the elbow connector and the connecting rod assembly are detachably connected, elbow connectors with different bending angles can be rapidly and conveniently replaced, and the operation requirements of different crowds are met; the axial vibration driving part can drive the executing part to do reciprocating motion in the axial direction, progressive punching is achieved through stable axial vibration, the risk caused by out-of-control operation force can be greatly reduced, and the operation safety is improved.

The invention discloses a drill rod signal transmission monitoring control method, which comprises the following steps: capturing drill rod axial vibration waveform and peripheral magnetic field vector change data in real time, analyzing and marking potential resonance frequency points, calculating magnetic field intensity break variable, and judging a geomagnetic anomaly region; determining the relevance between a resonance frequency point and geomagnetic mutation through time alignment processing, and separating and coupling interference signals; generating an anti-phase damping wave according to the resonance frequency point, dynamically adjusting the amplitude, and injecting a pre-compensation phase to counteract carrier offset; the signal-to-noise ratio and the phase error after suppression are calculated in real time, and a parameter readjustment process is triggered to ensure the suppression effect; when the rock drilling vehicle enters a new rock stratum, parameters are automatically recorded and updated to adapt to different rock stratum interference characteristics; the drilling stability and the signal quality are obviously improved, and the equipment loss and the maintenance cost are reduced.

The invention relates to a distributed optical fiber micro-seismic sensing device and a tunnel monitoring method, and belongs to the technical field of micro-seismic monitoring, the distributed optical fiber micro-seismic sensing device comprises a plurality of vibration measurement sensitization assemblies installed on the same tunnel section, and the plurality of vibration measurement sensitization assemblies are connected through distributed sensing optical cables; distributed sensing optical cables in the vibration measurement sensitization assembly are arranged in the radial direction of the tunnel and used for monitoring vibration signals of hidden and micro crack development of surrounding rock near the tunnel face in the radial direction. During monitoring, the vibration measurement sensibilization assembly at the head end or the tail end of the distributed optical fiber microseismic sensing device is sequentially connected with the distributed optical fiber demodulator, the monitoring host and the monitoring center to form a microseismic sensing monitoring network. The method for monitoring the tunnel by adopting the distributed optical fiber micro-seismic sensing device can realize the axial and radial sensing of the vibration signal, and overcomes the defect that the distributed sensing optical fiber is only sensitive to the axial vibration signal but not sensitive to the radial vibration signal.

The invention discloses a fault diagnosis system for an aviation turboshaft engine, and relates to the technical field of fault diagnosis. An acquisition module acquires horizontal, vertical and axial vibration signals; the processing module is used for generating real-time feature vectors by introducing dynamic short-time Fourier transform, variational mode decomposition and singular value decomposition of an unfixed-width Gaussian window; the incremental diagnosis module calculates the matching degree between a real-time feature vector or a prediction feature vector and a known class through a dynamic expansion network, selects to belong to the known class or triggers an expansion mechanism according to an adaptive resonance theory, constructs joint loss by using a Bayesian learning framework after expansion, and performs Gaussian process modeling; loss is determined through Bayesian optimization, and network parameters are updated; the prediction module generates a prediction feature vector when there is no fault; the maintenance module sends or stores a maintenance scheme according to needs, self-adaptive recognition of known classes and new fault classes is achieved, the state can be pre-judged in advance, the operation safety of the engine is effectively guaranteed, and the maintenance cost is reduced.

The application provides a frozen and thawed rock stratum blasting hole dynamic optimization drilling method, rock mass vibration is excited, vertical direction vibration data of an undrilled hole area on the ground and axial vibration data of a drilled hole area are collected, and a multi-source vibration data set is constructed; based on the data set, a rock mass structure characteristic reconstruction algorithm is applied to dynamically represent internal defect distribution and structure strength parameters, three-dimensional space coordinates of a subsequent to-be-drilled hole position and optimal drilling path instructions are generated, and the instructions are issued to a drilling control system; data of a positioning module and a navigation module are fused to monitor a drilling tool pose, a three-dimensional motion trajectory is constructed, an optimal obstacle avoidance path is dynamically planned according to the instructions, a drilling pose adjustment strategy containing a drill rod flexural deformation compensation amount is generated, and the drilling pose adjustment strategy is output to an adaptive trajectory adjustment mechanism; the drilling tool is driven to drill along the obstacle avoidance path, the mechanism is used for real-time regulation and control of a drilling trajectory deflection angle and a feed rate, the drilling tool motion trajectory is ensured to dynamically coincide with the target path, drilling precision is improved, and the risk of drilling tool jamming is reduced.

The invention belongs to the technical field of fan production tools, and particularly relates to an intelligent fan conveying end cover tool which comprises a tool body used for horizontally fixing a workpiece, and the tool body comprises a base and a plurality of locking supporting mechanisms arranged on the top face of the base at intervals to evenly support the workpiece. The locking and supporting mechanism comprises a first locking and supporting assembly and a second locking and supporting assembly adjacent to the first locking and supporting assembly, and the first locking and supporting assembly and the second locking and supporting assembly generate locking force on the two ends of the workpiece in the direction perpendicular to the horizontal direction. A balanced clamping force field is formed between the two ends of the workpiece. By means of the locking and supporting mechanism formed by the first locking and supporting assembly and the second locking and supporting assembly, opposite locking force can be formed at the upper end and the lower end of the workpiece correspondingly, so that a balanced clamping vertical field is provided, the workpiece can be fixed, meanwhile, axial vibration generated by the workpiece can be reduced, and the machining precision is improved.

The utility model provides a shock absorption assembly, motor assembly and range hood, including shock absorption piece and connecting piece, shock absorption piece is attached to connecting piece, shock absorption piece is equipped with convex part, connecting piece is equipped with accommodation groove, convex part is at least partially embedded in the accommodation groove. According to the damping assembly provided by the utility model, as the convex part is at least partially embedded in the accommodating groove, when the damping assembly is applied to the motor assembly, through the interaction of the convex part and the inner surface of the accommodating groove, on one hand, the axial vibration and the radial vibration of the motor can be effectively counteracted, so that the damping effect is well achieved; and on the other hand, the installation of the damping piece can be limited, and the problem that the damping effect is reduced due to the fact that the damping piece deviates between the motor and the connecting piece is solved.

The invention discloses a helical gear rack transmission system fault diagnosis method based on multi-axis vibration signals. The method comprises the following steps: acquiring a high-fidelity health signal; injecting fault features on the basis of the high-fidelity health signal to obtain a single-axis simulation signal; according to the generated single-axis simulation signals, a three-axis signal matrix is constructed through amplitude scaling and random disturbance, and the three-axis signal matrix comprises radial vibration signals, tangential vibration signals and axial vibration signals; performing feature extraction to obtain a multi-dimensional feature vector corresponding to each axis; fusing the multi-dimensional feature vectors to construct a sample set, and training a support vector machine model by using the sample set to obtain a fault diagnosis model; and gear rack fault diagnosis is realized by using the fault diagnosis model. According to the method, the problem of insufficient actual sampling data can be solved, the coupling information of the three-axis signals is fully utilized, the small sample advantage of the SVM is combined, high-precision recognition of various faults of the bevel gear rack transmission system is achieved, and the method has good engineering applicability and popularization value.

A method for displacing a tubular string in a wellbore can include axially vibrating the tubular string at a surface location, and reducing friction between the tubular string and the wellbore due to the axially vibrating. The axial vibration may be imparted by operation of an injector assembly. The axial vibration may be imparted by operation of a vibration tool connected between the injector assembly and a wellhead or a support structure that suspends the injector assembly. The axial vibration may be imparted by varying a flow rate of fluid into the tubular string.

The invention relates to the technical field of motor performance test equipment, in particular to performance simulation and test equipment and method for a dual-redundancy motor, and the performance simulation and test equipment for the dual-redundancy motor comprises a base, a mounting frame, a vibration ring, a torque detection unit and a connection socket. The connection socket is fixedly connected with a buckle, the connection socket is provided with a connection interface which is in circuit connection with a detected motor, and the torque detection unit is connected with a rotor of the detected motor and detects the output torque of the detected motor; vibration generated by the radial vibration motor and the axial vibration motor on the vibration ring is transmitted to the mounting ring and the dual-redundancy motor, the vibration of the dual-redundancy motor in the running process when the dual-redundancy motor is mounted on an automobile is simulated, and the position and angle of the vibration transmitted to the dual-redundancy motor are changed by rotating the transmission rod. Therefore, the performance simulation test effect of the invention is improved.

The application provides a damping foot pad, a compressor and a refrigeration and heating device. The damping foot pad comprises a shell with an inner cavity, a shaft core, a sheet spring, an eddy current damping mechanism for damping axial vibration of the shaft core, and a magnetic damping mechanism; the magnetic damping mechanism comprises an inner magnetic ring and an outer magnetic ring for generating magnetic repulsion to the inner magnetic ring in the direction of the shaft core. The damping foot pad of the application damps the axial vibration of the shaft core by setting the eddy current damping mechanism, sets the inner magnetic ring on the shaft core, and sets the outer magnetic ring coaxially around the inner magnetic ring. Since the eddy current damping mechanism and the magnetic damping mechanism have very small stiffness close to zero at the start of vibration, quasi-zero stiffness damping is formed, the axial and radial vibration isolation frequency ranges of the damping foot pad are wide, good axial and radial vibration isolation can be achieved, and the vibration isolation effect is good.

The invention relates to the technical field of photoelectric pods, and discloses a breather valve for a photoelectric pod, the breather valve comprises a pod body, a breather valve assembly and a control assembly, the breather valve assembly comprises an outer valve core pipe seat, the outer valve core pipe seat is connected with the outside of the pod body, and an axial through hole of the outer valve core pipe seat is sequentially provided with an inner sealing washer, a shell seat, an outer spring and an outer spring retainer ring; a valve element shaft is matched with the axis of the shell seat in a sliding mode and penetrates through the shell seat, a sealing cover matched with the inner sealing gasket is arranged at the position, close to an upper port of the shell seat, of the upper portion of the valve element shaft, the lower portion of the valve element shaft is sleeved with an inner spring fixing seat, the inner spring fixing seat is sleeved with an inner spring, and the other end of the inner spring abuts against the shell seat. The three-position five-way middle-discharge electromagnetic valve is controlled through high frequency to enable the valve element shaft to axially vibrate at high frequency, ultrasonic waves generated through high-frequency vibration can effectively strip pollutant particles attached to the positions of the valve element shaft, the sealing cover and the like, and untight sealing caused by accumulation of the pollutant particles is prevented.

The present application relates to a kind of distributed optical fiber microseismic sensing device and tunnel monitoring method, belong to microseismic monitoring technical field, distributed optical fiber microseismic sensing device includes multiple installation in the same tunnel section vibration measurement sensitizing component, multiple vibration measurement sensitizing component is connected by distributed sensing optical cable;Distributed sensing optical cable in vibration measurement sensitizing component is arranged along tunnel radial, for monitoring the vibration signal of the development of the hidden crack and micro crack of surrounding rock along radial near working face.In monitoring, the first end or tail end of distributed optical fiber microseismic sensing device one vibration measurement sensitizing component is sequentially connected with distributed optical fiber demodulator, monitoring host and monitoring center, and constitutes microseismic sensing monitoring network.The method for tunnel monitoring using the above-mentioned distributed optical fiber microseismic sensing device can realize the perception of vibration signal along axial and along radial, overcome the defect that distributed sensing optical fiber is only sensitive to axial vibration signal and not sensitive to radial vibration signal.

This invention relates to the field of heavy-duty equipment technology, specifically to a detection system for support components of heavy-duty equipment. The system includes two bases, a mounting base, and a workpiece. A motor is fixedly connected to the side of the mounting base, and the motor's output end is connected to a vibration output excitation component. When detecting transverse lines within the workpiece, the invention rotates the hexagonal rotating head at the bottom of the circular block. The first screw drives the rectangular block to slide upwards within the rectangular groove. The motor drives the disc to rotate. When the disc rotates half a revolution, the protrusion rotates from the top to the bottom. The disc, through a connecting rod, drives the U-shaped connecting block on the rectangular block to rotate, and simultaneously pulls the circular block to slide to the right on the crossbar. When the disc rotates half a revolution again, similarly, the protrusion rotates from the bottom to the top, and the circular block slides to the left on the crossbar. When the circular block moves to the left, it contacts the circular plate, generating axial vibration. Thus, the continuous rotation of the motor continuously outputs axial vibration to the right end of the workpiece.

The utility model relates to a mute reduction gearbox of intelligent drive part, including motor, motor output shaft, reduction gearbox casing, the motor output shaft of installation has the worm reaches into in reduction gearbox casing, and the motor axle shell of covering motor output shaft and worm is arranged in the inside of reduction gearbox casing, and the motor axle shell one side sets up the opening, and the worm is engaged transmission with the worm wheel in reduction gearbox casing through the opening, the motor axle shell has the motor axle locating sleeve inside, and the end of motor output shaft is supported on the motor axle locating sleeve, the utility model overcomes the axial vibration and radial swing on the motor output shaft in traditional reduction gearbox, makes the worm on the motor output shaft and the worm wheel cooperation stability, and the noise production is reduced greatly.

This invention relates to the field of centrifugal fan technology, specifically a centrifugal fan with a self-cleaning function. The fan includes a casing with an air inlet frame fixedly connected to its surface and an air outlet. An impeller is rotatably connected to the inner wall of the casing. The impeller consists of a main shaft and multiple blades uniformly fixedly connected to the main shaft. A motor is fixedly connected to the surface of the casing. This invention draws power from the impeller's main shaft via a transmission assembly. After deceleration by the internal gear ring of the gear and gear, the ball bearings at the end of the push rod roll along the inclined plane of the triangular block, converting the circumferential motion into axial vibration of the slip ring. This vibration causes the filter element to shake off accumulated dust. The entire process eliminates the need for an independent vibration motor, avoiding additional power supply lines and control costs. Simultaneously, the internal gear ring deceleration keeps the impact frequency low, and combined with the rolling friction of the ball bearings, the operating noise is significantly lower than existing solutions using high-frequency vibration motors, meeting the quiet operation requirements of household air conditioners.

The invention relates to the technical field of semiconductors, and discloses a vibration suppression device for hybrid bonding equipment and a hybrid bonding method.The vibration suppression device for the hybrid bonding equipment comprises a horizontal vibration suppression mechanism and a vertical vibration suppression mechanism, the device comprises a hollow connecting assembly, a horizontal limiting assembly, an axial connecting assembly, a circumferential moving assembly and a horizontal vibration suppression assembly. The axial vibration suppression mechanism comprises an axial vibration suppression assembly; the horizontal vibration suppression mechanism and the axial vibration suppression mechanism are additionally arranged between the main transmission shaft and the bonding end, opposite vibration stress can be generated through the horizontal vibration suppression assembly according to a moving signal of the main transmission shaft, and the axial vibration suppression mechanism is matched to suppress and consume energy and influence generated by the vibration stress, so that the vibration suppression effect is improved. And the axial vibration suppression mechanism can adaptively adjust the negative pressure generated by the air pressure adsorption structure on the bonding end in the process.

The scroll compressor with the flexible supporting structure comprises a shell, a compression mechanism and a driving mechanism, the driving mechanism comprises a stator, a rotor, a crankshaft, a main bearing seat, a lower bearing and a motor sleeve, and a certain gap exists between the outer side face of the main bearing seat, the outer side face of the motor sleeve and the inner side face of the shell and between the outer side face of the lower bearing seat and the inner side face of the shell; a supporting plate is installed on the lower portion in the shell, the supporting plate is fixedly connected with the shell, the driving mechanism is installed on the supporting face of the supporting plate through a first elastic component, and the first elastic component is used for counteracting axial vibration of the scroll compressor; a guide ring is fixedly installed on the upper end face of the main bearing seat, the outer side face of the static scroll plate is sleeved with the guide ring in a clearance fit mode, a certain gap exists between the outer side face of the guide ring and the inner side face of the shell, a second elastic component is installed in the gap, and the second elastic component is used for counteracting radial vibration of the compression mechanism. The structure is ingenious, and noise is greatly reduced.

The invention discloses an opposed fin heater applied to a Stirling engine. The heater comprises a heat exchange sleeve, heat exchange fins, a pressure-bearing shell, a plurality of multifunctional adjusting blocks, a shell temperature measurement fixing column, an inner cavity temperature measurement fixing column, a column section flange and an adjusting inner core. According to the heater, opposed interfaces of the two Stirling engines are provided by adopting the symmetrically-arranged column section flanges, the two Stirling engines share a hot end working cavity, axial vibration is mutually counteracted when the two engines work at the same time, and a single-machine vibration acceleration signal can be reduced by 50%; heat generated by an external heat source is transmitted to the internal working medium through the heat exchange sleeve and the heat exchange fins in sequence; the multifunctional adjusting block can adjust the weight, the internal volume and the heat capacity of the heater by selecting different materials and structures, and therefore adjustment of parameters such as the weight, the gravity center and the thermal inertia of the heater is achieved.

The embodiment of the present application relates to a kind of dual-frequency high-power liquid processing ultrasonic transducer, comprising: one end of amplitude transformer is connected with sandwich transducer to form longitudinal displacement output structure;Metallic pipe is provided with mounting hole in side surface, mounting hole is connected with amplitude transformer by connecting piece arranged in the conical end of amplitude transformer, both ends of metallic pipe are provided with concave flexure shell;The half-wave mode and full-wave mode of longitudinal displacement output structure make the radial vibration and axial vibration of metallic pipe, form the complex frequency operating mode of ultrasonic transducer.The embodiment of the present application excites the radial vibration and longitudinal vibration of metallic pipe by the half-wave and full-wave mode of longitudinal displacement output structure respectively, realizes the dual-frequency operating mode of ultrasonic transducer;Concave flexure shell amplifies the radial vibration displacement of metallic pipe in phase, increases the acoustic radiation area of metallic pipe axial vibration, improves the acoustic radiation power of ultrasonic transducer and the uniformity of transducer radiation sound field.

This utility model discloses a vibration-damping dryer, including a drying tank. Several support plates are evenly distributed circumferentially along the middle of the outer wall of the drying tank. A first vibration-damping component is provided above the support plates, and a second vibration-damping component is provided below the support plates. The second vibration-damping component is mounted on an installation platform, and an adjustment port is provided in the middle of the installation platform. The bottom of the drying tank passes through the adjustment port. The first vibration-damping component is used to buffer radial vibration of the drying tank, and the second vibration-damping component is used to buffer axial vibration of the drying tank. This utility model uses a drive unit to drive a crushing unit, employs multiple first vibration-damping components to buffer radial vibration of the drying tank, and coordinates with second vibration-damping components to buffer axial vibration of the drying tank. This achieves the reduction of mechanical vibration in all directions generated during daily operation of the drying equipment, extending the service life of the drying equipment, reducing noise, and protecting operators.

This invention discloses a method, apparatus, equipment, and medium for determining the operating load of a wind turbine, relating to the field of power equipment technology. The method includes: determining target operating data of the wind turbine; determining the cumulative vibration acceleration value and model coefficients of the wind turbine based on the target operating data, wherein the cumulative vibration acceleration value includes the cumulative axial vibration acceleration value and the cumulative lateral vibration acceleration value, and the model coefficients include axial model coefficients and lateral model coefficients; and determining the operating load of the wind turbine based on the cumulative axial vibration acceleration value, the cumulative lateral vibration acceleration value, the axial model coefficients, and the lateral model coefficients. This invention determines the cumulative vibration acceleration value and model coefficients of the wind turbine based on its operating data, thereby determining the operating load of the wind turbine. This method enables simple, rapid, and efficient determination of the operating load of the wind turbine without the need for additional detection equipment, improving the feasibility of the operating load determination process.

The present application relates to a kind of damper and transmission system.The damper includes center hub and spoke spring buffer.The spoke spring buffer is arranged at the outer circumferential side of the center hub;The spoke spring buffer includes: outer ring part and multiple spoke springs;The outer ring part is arranged at the outer circumferential side of the center hub;Multiple spoke springs are respectively connected between the center hub and the outer ring part along the radial direction and are spaced along the circumferential direction, and multiple spoke springs can be elastically deformed to allow the center hub to move relative to the outer ring part.The damper of the present application can realize larger eccentric compensation function, can absorb axial vibration, and can reduce noise;In addition, the damper of the present application is simple in structure, and low in cost.

The invention discloses a municipal road anti-explosion damping protection system close to a hydrogen storage tank and a construction method of the municipal road anti-explosion damping protection system. The protection system is arranged in a reasonable protection range between a hydrogen storage tank and a municipal road to be protected in parallel, the axes of the hydrogen storage tank, the municipal road and the protection system are kept parallel, and the protection system comprises a horizontal cylinder protection device, a reinforced soil sand cushion foundation and a grating type interception plate; according to the horizontal cylinder protection device, explosive shock waves are converted into rotating kinetic energy around a center rotating shaft and radial and axial vibration energy, energy dissipation is achieved through friction between an elastic damper and a sand cushion layer, and large-size explosive fragments are intercepted in advance through a grating type interception net. The construction method comprises the steps of site positioning, foundation construction, arrangement of the support and the rotating shaft, hoisting and assembling of the device cylinder, and installation, debugging and acceptance of the intercepting plate. The device achieves the dual functions of explosive shock wave digestion and fragment interception, is short in construction period, meets the requirement for rapid protection of the periphery of the hydrogen storage tank, and has the advantages of being simple in structure and good in protection effect.

The invention discloses a method, device, equipment and medium for analyzing and rating the vibration condition of a drill string based on real-time logging data, and the method comprises the steps: obtaining real-time continuous logging parameters based on the feature representation of the vibration condition, including time, well depth, drilling speed, drilling pressure, torque, rotating speed, hook load and mechanical specific energy; performing data processing on the real-time continuous logging parameters to establish a continuous time window; establishing a torsional vibration analysis hierarchical model and an axial vibration analysis hierarchical model; and based on the established torsional vibration analysis hierarchical model and the axial vibration analysis hierarchical model, analyzing data in each continuous time window to realize abnormal vibration screening and rating. Therefore, the method can realize preliminary marking and grading of torsional vibration and axial vibration of the drilling column at the bottom of the marine extended reach well, and can be widely applied to marine drilling and completion operation.

A shaker (1) comprises a magnetic component (10) and a coil component (20) designed for axial vibration relative to each other along a main shaker axis (2). The shaker includes guide and suspension means (43) for mounting the magnetic component and the coil component relative to each other. The magnetic component comprises a body (11) and a magnet (12) that define a gap (14) between the body and the magnet. The coil component comprises a coil carrier (21) which carries a coil (22) extending into the gap. The guiding and suspension means comprises a low-friction material (43) that is arranged between the coil and the body and / or the magnetic components.

The invention discloses a composite throttling static pressure gas radial bearing for a wafer thinning machine gas floating main shaft, and belongs to the technical field of static pressure gas bearings. Comprising a bearing shell, a bearing inner ring and a composite throttler which are sequentially arranged in the bearing shell in the axial direction, compression cages symmetrically arranged on the two axial outer side end faces of the bearing shell, and elastic rings, grading rings and pre-tightening compression rings which are arranged between the bearing shell and the interiors of the compression cages. The compression cage comprises a compression cage outer ring, a compression cage inner ring, a compression ring axially arranged between the inner ring and the outer ring, and a plurality of elastic compression structures evenly connected between the compression ring and the compression cage outer ring and the compression cage inner ring in the circumferential direction. By designing the compression cage structure, the radial vibration motion of the bearing inner ring is converted into the axial vibration of the pre-tightening compression ring, then the strain energy of the elastic ring is converted into electric energy consumption, piezoelectric shunt damping is provided for the bearing, the vibration amplitude of the bearing inner ring is reduced, and the stability of the static pressure gas radial bearing is effectively improved.