745 results about "Vertical vibration" patented technology

The invention relates to the technical field of data processing, and discloses an environment detection analysis method and system based on a simulation micro-motion signal excitation generator. The method comprises the following steps: generating a vertical vibration signal through an integrated structure of a constant-resistance vibration exciter and a special coupling base; performing multi-band signal excitation and station arrangement according to the frequency parameter combination; filtering and normalizing the original signal, and calculating a spatial autocorrelation coefficient; a frequency dispersion curve is extracted through an SPAC method; inverting an underground S-wave velocity structure by using a divergence genetic algorithm; and analyzing the speed abnormal region by adopting an edge detection algorithm, and determining the position and state of the box culvert body. According to the invention, high-precision non-destructive detection of the buried power pipeline box culvert body is realized in an urban complex underground environment.

The invention discloses a bionic TENG sensor unit for an artificial throat and a preparation method thereof, and relates to the field of artificial throats, and the sensor unit comprises a gradient micro-dome friction layer, a strain amplification layer, an electrode layer and a back cavity substrate layer. The gradient micro-dome array realizes gradual contact through gradient change of height and diameter; the strain amplification layer converts vertical vibration into horizontal strain by using a cantilever beam-sliding block structure; the back cavity array selectively amplifies vibration at a specific frequency based on the Helmholtz resonance principle. The invention further provides a corresponding preparation method. The preparation method comprises the steps of back cavity forming, electrode deposition, microstructure manufacturing, surface treatment and the like. The sensor has the advantages of high sensitivity, good frequency selectivity and strong durability, and is particularly suitable for detecting weak laryngeal vibration signals of laryngeal patients.

The invention discloses a locomotive wheel polygon damage detection method based on a lightweight neural network, and the method comprises the steps: obtaining axle box vertical vibration acceleration response signals of a heavy-load locomotive under the combination of different operation speeds and different wheel polygon abrasion degrees, and carrying out the preprocessing of the signals, the method comprises the following steps: acquiring frequency domain characteristics of a signal through fast Fourier transform, constructing a sample data set based on the frequency domain characteristics, constructing a wheel polygon damage detection network model, training the model by using the sample data set, and identifying a wheel polygon abrasion amplitude by using the trained polygon damage detection network model. And completing damage detection of the polygon of the wheel. The method can realize accurate and quantitative detection of the polygon abrasion degree of the heavy-load locomotive wheel, has the characteristics of accuracy, high efficiency and strong robustness, and also has relatively good interpretability.

The invention belongs to the technical field of ocean engineering, and particularly provides an offshore floating platform and a modular multifunctional offshore floating platform system.The offshore floating platform comprises a main body structure layer, a building module layer and a floating body layer, and the main body structure layer is provided with a plurality of buffer assemblies; the buffering assembly comprises a fixing sleeve, a supporting rod and a buffering mechanism. The buffer mechanism is arranged in the fixed sleeve, a flowing gap is reserved between a lantern ring of the buffer mechanism and a vertical rod of the I-shaped section of the supporting rod, and the flowing gap is filled with magnetorheological fluid; the lantern ring comprises a middle fixed section, a first flexible section and a second flexible section; the first pneumatic sleeve is positioned on the outer side of the first flexible section; the second pneumatic sleeve is positioned on the outer side of the second flexible section; and the winding coil is wound on the circumferential outer wall of the middle fixed section. The offshore floating platform can counteract vertical fluctuation energy caused by the action of waves or tides in real time, so that vertical vibration of the offshore floating platform can be buffered, the stability and safety of the building module layer are ensured, and the offshore operation difficulty is reduced.

The invention discloses a quasi-zero stiffness vibration double-control device based on metamaterials, and relates to the technical field of vibration isolation and vibration reduction control. The device comprises a vertical vibration isolation structure, a horizontal vibration isolation layer, a middle plate, an upper connecting plate and a lower connecting plate, the vertical vibration isolation structure is connected to the top face of the horizontal vibration isolation layer, and the device is characterized in that the vertical vibration isolation layer is composed of a plurality of quasi-zero-stiffness metamaterial cell elements which are horizontally and evenly distributed, and each quasi-zero-stiffness metamaterial cell element comprises a buckle mechanism and a wave-shaped beam mechanism; the negative stiffness generated in the movement process of the buckle mechanism and the positive stiffness generated in the loading process of the wave-shaped beam mechanism counteract each other, and a quasi-zero stiffness mechanism is formed. According to the quasi-zero-stiffness metamaterial cell element, the initial stiffness of the quasi-zero-stiffness metamaterial cell element can be changed by adjusting the pre-tightening force of the bolts, so that the vertical bearing capacity is changed, different engineering requirements are met, the problem that low-frequency vibration isolation of a traditional vibration isolation device fails is solved, and the quasi-zero-stiffness metamaterial cell element is particularly suitable for meeting the earthquake and vibration dual-protection requirements of rail transit upper cover buildings.

The invention relates to the technical field of softened water treatment devices, in particular to an induced crystallization granulation fluidized bed softened water treatment device. Comprising a cylinder, a stainless steel cathode layer is arranged on the inner side of the cylinder, the stainless steel cathode layer is electrically connected with a negative electrode of a power supply, an excitation system is mounted on the cylinder, a vertical vibration frame capable of vertically reciprocating is connected to the excitation system, a translation frame is slidably connected to the vertical vibration frame, and a synchronizing system for driving the vertical vibration frame and the translation frame to synchronously displace is arranged on the vertical vibration frame. The synchronous system is in transmission connection with a transmission shaft capable of alternately rotating forwards and backwards, a micro-filtration cylinder is rotationally mounted on the translation frame, an insulating shaft is rotationally mounted in the micro-filtration cylinder, the micro-filtration cylinder and the insulating shaft are driven by the transmission shaft, a plurality of guide rings are mounted on the micro-filtration cylinder, and an anode bar slides on the insulating shaft. According to the device, grain fluidization is strengthened through synchronous multi-dimensional excitation, the problem of local reaction dead angles is solved, the problems that a traditional device is low in crystallization efficiency and uneven in particle size are effectively solved, and the stability of grain settling separation is guaranteed.

The invention provides a ballastless track joint performance degradation monitoring method and system, and relates to the technical field of track joint performance monitoring, and the method comprises the steps: knocking a ballastless track plate at a track joint through a force hammer to generate excitation, collecting a vertical vibration acceleration response signal through an acceleration sensor, and synchronously recording the knocking time and static parameters. The vertical vibration acceleration response signal is preprocessed, abnormal pulses and baseline drift are removed, a vibration event sample is formed, and joint mechanics characteristic parameters including a vibration frequency parameter reflecting rigidity degradation and a vibration attenuation parameter reflecting damping are extracted. According to the method, the joint performance evaluation index is calculated in combination with the static parameters, the degradation grade is evaluated after the evaluation index is compared with the preset threshold value, an early warning signal is triggered, the joint degradation grade and position information are provided, and monitoring and evaluation of the joint performance are achieved.

The invention relates to motor rotor performance detection equipment which comprises a base, a vertical plate fixedly connected to the top wall of the base, a supporting shaft fixedly connected to the front wall of the vertical plate, a reciprocating bearing arranged on the supporting shaft in a sleeving mode, a reciprocating roller supported by the reciprocating bearing, a T-shaped ring fixedly connected to the front end of the reciprocating roller, a vertical plate extending downwards and two transverse plates extending in the opposite directions arranged on the T-shaped ring, the front wall of the vertical plate is connected with a vertical sliding seat in a sliding mode, the top of the vertical sliding seat is connected with a shaft bottom sensing seat in a sliding mode, the shaft bottom sensing seat is provided with two shaft bottom contact wheels, and the transverse plates on the two sides are each connected with a transverse sliding seat in a sliding mode. According to the detection method of the motor rotor performance detection equipment, the vibration characteristics of the rotor can be analyzed more fully and comprehensively, the dynamic balance correction precision is improved, and the risk of missed judgment caused by missed detection of the vibration characteristics in the vertical direction is avoided.

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 discloses a building cement floor construction leveling device, and relates to the technical field of cement floor construction, the building cement floor construction leveling device comprises a scraping plate, a vibration support is installed in the middle of the scraping plate, a vibration motor is installed on the vibration support, and an operation frame used for moving the leveling device is further installed on the vibration support; the lifting mechanism is installed on the rear side of the scraping plate, the lifting mechanism comprises a fixed plate and a lifting plate, and the lifting plate can do lifting motion relative to the fixed plate; the plurality of movable mounting mechanisms are mounted on the lifting plate and are used for movably mounting the vertical vibration mechanism; through cooperative arrangement of the lifting mechanism, the movable mounting mechanism and the vertical vibration mechanism, internal vibration treatment of thick cement pavement slurry can be achieved, exhaust of gas in the cement slurry is promoted, and the construction quality of leveling of the thick cement pavement can be improved in combination with scraper vibration leveling.

The invention discloses a TLD damping platform for take-off and landing of a large unmanned aerial vehicle. The TLD damping platform comprises a take-off and landing platform, a water tank, a lower supporting device, a connecting device and an upper supporting device. The lifting platform is located at the top end of the water tank. The lower supporting device is located below the water tank, and an upper supporting device is arranged between the bottom end of the water tank and the lower supporting device; the side face of the water tank is connected with the lower supporting device through an obliquely-arranged connecting device. The connecting device and the upper supporting device are arranged between the water tank and the lower supporting device, so that vertical impact force generated by taking off and landing of the unmanned aerial vehicle can be effectively absorbed and dispersed, and vertical vibration of the take-off and landing platform is weakened; when the water tank deviates in the horizontal direction, horizontal vibration energy can be further dissipated through the obliquely-arranged self-resetting compression rod, and resetting of the water tank and the lifting platform is promoted.

The utility model discloses a horizontal vibration isolation and vertical vibration isolation decoupling vibration and vibration double-control support which comprises a vertical vibration isolator and a horizontal vibration isolation device, the vertical vibration isolator and the horizontal vibration isolation device are connected in series up and down, and the vertical vibration isolator is located on one side of the horizontal vibration isolation device. Only the vibration isolation spring is arranged between the upper cover plate and the lower cover plate in the vertical vibration isolator, and a horizontal limiting device does not exist between the upper cover plate and the lower cover plate, so that the vertical vibration isolator has a multidirectional movement trend; the horizontal rigidity of the vibration and shock double-control support is smaller than that of a friction pendulum shock insulation support, the vibration and shock double-control support has the function of energy consumption in the horizontal direction, and when the vibration and shock double-control support is applied to a subway upper cover building or corridor shock insulation structure, abrasion of the support under temperature deformation of a building or a corridor can be effectively reduced; when the device is applied to the corridor, vibration of the corridor under wind-induced or human-induced loads can be effectively reduced.

The utility model discloses a lycium barbarum picking device, which relates to the technical field of lycium barbarum picking and comprises a driving device and a vibrating rod. The driving device is configured to drive the vibrating rod to reciprocate along a first straight line, at least the surface material of the vibrating rod is a flexible material, and the first straight line extends in the horizontal direction in a picking state. Picking is conducted in a horizontal left-right vibration mode, compared with vertical vibration and rotary vibration, the horizontal vibration mode can reduce damage to branches and leaves in the picking process, and therefore plant growth is protected; and the vibration rod with the surface material being a flexible material is adopted, so that damage to branches, leaves and fruits in the picking process can be further reduced.

The invention discloses an anti-seismic protection structure of a coral island reef limestone underground chamber and a construction method.The anti-seismic protection structure of the coral island reef limestone underground chamber comprises a chamber hole, an elastic shock insulation layer, a pouring layer, a shock insulation support, a viscous damping component and a mild steel damper; the seismic isolation support and the pouring layer bear vertical loads together, the viscous damping component and the side wall bear lateral confining pressure of reef limestone, under the earthquake effect, the elastic seismic isolation layer can preliminarily absorb earthquake energy, and after three-direction seismic waves are transmitted to the structure, the seismic energy of X-direction seismic waves and Y-direction seismic waves is consumed by the seismic isolation support at the bottom layer through vibration and friction, so that the seismic isolation effect is achieved. X-direction and Y-direction deformation and displacement of the chamber are reduced, Z-direction seismic waves absorb seismic energy through the seismic isolation support, so that energy continuously transmitted to the upper portion is avoided or reduced, and the vertical vibration response of the structure is relieved. At the arch crown part, the mild steel damper can absorb and dissipate energy through vibration and plastic deformation of an energy dissipation component arranged on the mild steel damper.

According to the multi-connecting-rod type automobile suspension device, through cooperative cooperation of a multi-connecting-rod assembly, a damping support, an axle and a damping assembly, wheel vertical vibration caused by the road surface can be efficiently converted into a multi-connecting-rod swing vector, and self-adaptive damping adjustment is achieved by means of a damper and air cylinder composite structure in the damping assembly; impact can be effectively buffered in the compression stroke, springback can be restrained in the stretching stroke, it is ensured that tires continuously grip the ground, meanwhile, sound insulation materials are additionally arranged at the ends of the dampers, running noise is effectively reduced, impact energy in the vertical direction is further absorbed by integrating multiple sets of spiral springs through a drive axle, rigid transmission to an automobile main frame is reduced, and the service life of the automobile is prolonged. The whole structure is high in rigidity and reasonable in spatial arrangement, and has good vibration absorption performance, reliability and comfort, and the driving smoothness, the control stability and the noise vibration comfort of a vehicle are remarkably improved.

The invention relates to the technical field of elevator fault diagnosis, in particular to an elevator fault diagnosis and positioning method based on big data, which comprises the following steps: acquiring speed and load data of an elevator and vibration acceleration in vertical and horizontal directions; each elevator operation stage is divided into a starting stage, a constant speed stage and a braking stage, and amplitude change coefficients and amplitude frequency coefficients of the starting stage and the braking stage during each elevator operation are obtained, so that vibration abnormal coefficients of the starting stage and the braking stage during each elevator operation are obtained; the method comprises the following steps: calculating a vibration consistency coefficient influenced by unbalance of a traction sheave of the elevator when the elevator runs each time so as to obtain a vertical vibration abnormal value when the elevator runs each time, calculating an inherent frequency approximation coefficient of vibration acceleration in the horizontal direction when the elevator runs each time so as to obtain an elevator fault significant value in each monitoring time period, and diagnosing an elevator fault condition. And fault positioning is carried out in combination with the classification model. The accuracy of elevator fault diagnosis and positioning can be improved.

The invention discloses a path selection method and system for AGV transportation equipment, a product and a medium. The method comprises the following steps: firstly, when the automated guided vehicle runs, calculating and updating vibration and slippage cost values for each unit of a grid map in real time by collecting vertical vibration and wheel-actual speed difference data, so as to construct a dynamic physical risk map; after a transportation task is received, obtaining exclusive vibration and slippage weights according to task characteristics (such as whether goods are fragile or not); evaluating a plurality of to-be-selected paths, and accumulating the length cost of each path and the weighted vibration cost and the weighted slip cost of all grids along the path to calculate the comprehensive passing cost; and selecting the path with the lowest comprehensive passing cost as a final execution path. By implementing the technical scheme provided by the invention, the adaptability of AGV path planning to complex physical road conditions is improved.

The invention relates to the technical field of transformer vibration testing, and discloses a transformer vibration testing device and method.The transformer vibration testing device comprises a transverse vibration mechanism, a vertical vibration mechanism and a rack mechanism, according to an occasion needing simulation, an inclined rack is controlled to obliquely swing around a first horizontal axis to a set inclination angle relative to a rotary rack, and the inclined rack is driven to rotate; meanwhile, the tool rack is controlled to obliquely swing around a second horizontal axis to a set inclination angle relative to the inclined rack, so that the transformer is controlled to obliquely swing around a first horizontal axis and the second horizontal axis, coupling inclined swing control is achieved, and the transformer can swing to a set inclination posture in any direction in a three-dimensional space; the rotating rack is driven by the rotating driving structure to rotate relative to the vertical vibration table so as to drive the transformer to rotate, excitation vibration on the periphery of the transformer can be achieved in a rotating mode under driving of the transverse vibrator, and the testing cost can be reduced.

The invention provides a vertical liquid damper which comprises a closed container, buffer liquid, a horizontal partition part and a horizontal energy dissipation part, a base connected with an external structure to be subjected to vibration reduction is arranged at the bottom of the closed container, and the interior of the closed container is divided into at least two independent closed cavities by the horizontal partition part; each closed cavity is filled with the buffer liquid flowing in a collision mode, the horizontal energy dissipation pieces are arranged in the closed cavities, each horizontal energy dissipation piece comprises a middle hollow channel and a peripheral baffle, and the peripheral baffle is provided with a pore structure for the buffer liquid to pass through in the vertical movement process. The device has the advantages of effective dissipation of vertical vibration energy, simple structure and the like.

The utility model discloses a vertical vibration reduction support based on piezoelectric energy consumption for bridge engineering, which comprises a base plate, a lower seat plate arranged in the base plate, a middle seat plate arranged on the lower seat plate, an upper seat plate arranged on the middle seat plate, and a vibration reduction disc arranged in the base plate and used for vertical vibration reduction. The upper end of the damping disc makes contact with the lower seat plate, a piezoelectric energy dissipation assembly is arranged between the damping disc and the base plate, the damping disc is in an arch shape, the arc face of the damping disc is connected with the pressure bearing block, and the plane of the lower end of the pressure bearing block is connected with the piezoelectric energy dissipation assembly. The vibration reduction disc is made of a spring steel material and adopts an arch-shaped structure, so that stable vertical support can be provided for an upper structure under the action of static force. Vibration reduction and energy consumption of the vertical support are achieved through the piezoelectric energy consumption assembly, the piezoelectric energy consumption assembly converts high-frequency vibration mechanical energy of the support into electric energy through the two piezoelectric ceramic plates, the energy consumption efficiency is high, the working temperature range is wide, and the adaptive capacity is high.

The multi-stage shock isolation and absorption device comprises a base, and the bottom of the base is connected with a rest platform picking-out plate; the connecting seat is arranged on the upper portion of the base, and the lower surface of the connecting seat is connected with the upper surface of the base through a friction pendulum energy dissipation mechanism; the elastic connecting piece is arranged between the base and the connecting seat; a shearing groove is formed in the upper portion of the connecting base, a box type shearing structure is arranged in the shearing groove, the upper portion of the box type shearing structure is open, and a vertical vibration isolation unit is arranged in a box body of the box type shearing structure; the left side and the right side of a box body of the box-type shearing structure extend to be provided with wing-shaped pressure-bearing steel plates, and the upper surface and the lower surface of a shearing energy dissipation plate are fixedly connected with the inner wall of a shearing groove of the connecting base through viscoelastic energy dissipation material layers correspondingly. Two energy dissipation modes of viscoelasticity and a friction pendulum energy dissipation mechanism are combined, and energy can be effectively dissipated under different earthquake intensities according to damage characteristics of stairs during earthquake.

The utility model relates to a vibration reduction technology in the field of vibration control of building structures, in particular to an open type modularized tuned mass damping system. The device comprises an embedded part, a frame, a mass block, a supporting beam, an adjusting spring, a damper, a lug plate, a friction plate, a pin shaft and a nut, the frame provided with the mass block serves as a mass module, the supporting beam and the adjusting spring jointly form a rigidity module, and a friction pair composed of the friction plate and the lug plate and the damper jointly form a damping module. When the floor slab generates vertical vibration due to external excitation, the nearby structural beams vibrate synchronously. The supporting beam provided with the mass module is connected to the structural beam through the friction damping pin shaft assembly. The structural beam vibrates to drive the mass module, and the supporting beam and the adjusting spring have the same vibration frequency and opposite directions. The damper between the mass module and the floor is enlarged in deformation due to reverse vibration, energy consumption is enhanced, and therefore vibration of the floor is relieved.

The utility model discloses a solar panel photovoltaic assembly automatic snow removing mechanism which comprises a base plate, a rail groove is formed in the base plate, a vertical plate is fixedly installed on the top face of the base plate, a spring telescopic rod is fixedly installed on the top face of a movable plate, an installation frame is fixed to the top end of the spring telescopic rod, and a photovoltaic panel is installed at the top end of the installation frame. The edge of the top face of the base plate is fixedly connected with the bottom end of a middle frame, a trigger plate is fixed to the top face of the middle frame, one end of the trigger plate is attached to the bottom end of a middle pulley, and the middle pulley is rotationally installed in the center of the bottom face of the installation frame. According to the automatic snow removing mechanism for the solar panel photovoltaic module, the novel structural design is adopted, the photovoltaic panel and the mounting frame integrally conduct small-amplitude horizontal vibration and small-amplitude vertical vibration at the same time through the mechanical driving mechanism which is compact and stable in structure, accumulated snow is efficiently shaken off in cooperation with the smooth plane of the photovoltaic panel, the manufacturing cost is low, the failure rate is low, and the practicability is high. And installation operation and later maintenance are convenient.

The invention relates to an intelligent tile supporting device of a radial tilting-pad sliding bearing and an online gap regulation and control method, and relates to the technical field of sliding bearing rotor dynamics. Comprising a stepping motor, a horizontal vibration displacement sensor, a vertical vibration displacement sensor, a control processor and two intelligent fulcrum devices which are symmetrically installed in the vertical direction and are of the same structure. The horizontal vibration displacement sensor and the vertical vibration displacement sensor are installed in the horizontal direction and the vertical direction of the rotor respectively and connected with the input end of the control processor, the output end of the control processor is connected with the input end of the stepping motor, and an output shaft of the stepping motor is connected with the intelligent fulcrum device. According to the invention, working parameters such as the bearing clearance and the preload can be timely adjusted on line according to the operation working conditions of the bearing and the rotor under the condition of no shutdown or disassembly, so that the rotor system has better vibration resistance and stability, and meanwhile, the sliding bearing keeps a reliable lubrication characteristic.

The invention discloses a self-energized magneto-rheological vibration reduction system and method suitable for transverse and vertical coupling vibration of a high-speed normal-conducting maglev train, and relates to the field of magnetic suspension. The suspension surface current collection coil and the guide surface current collection coil are used for inducing magnetic field changes and generating induced electromotive force; the energy management system is used for rectifying, boosting and stabilizing the induced electromotive force and storing electric energy; the acceleration detection system is used for detecting transverse and vertical vibration accelerations of the vehicle body; the control system is used for outputting control current according to the vibration signal; and the transverse magneto-rheological damper and the vertical magneto-rheological damper are used for outputting variable damping force according to the control current and restraining transverse and vertical vibration of the vehicle body. According to the method, effective suppression and energy recovery of transverse and vertical vibration are realized without depending on current frequency division processing, so that the decoupling control problem caused by active control noise in a normal-conducting magnetic levitation system is solved.

The invention discloses a human body protection active suspension system control method, device and equipment and a storage medium, and the method comprises the steps: collecting vibration acceleration data of a vehicle body and an unsprung in real time after a human body protection function of a current vehicle is activated; converting the vibration acceleration into a vertical vibration frequency, and judging whether the vertical vibration frequency exceeds a preset vertical threshold value or not; when the vertical vibration frequency exceeds a preset vertical threshold value, the current of the active actuator is adjusted; the vehicle body vibration frequency can be effectively prevented from falling below the safety limit value, health risks caused by continuous exposure of pregnant women and other special groups to high-frequency vibration are avoided, it is ensured that the vibration environment in the driving process meets the human body tolerance standard, transmission of road surface vibration excitation is reduced through a calibration algorithm, the vehicle body vibration frequency is improved, and the driving safety is improved. The protection on the human body is enhanced, the human body is prevented from being exposed in a high-frequency vibration environment for a long time, and the control speed and efficiency of the active suspension system are improved.

The invention relates to the technical field of shield tunnel vibration control, in particular to a shield tunnel under-rail vibration isolation structure and a construction method thereof.The shield tunnel under-rail vibration isolation structure comprises a prefabricated rail foundation arranged in the longitudinal direction of a tunnel and prefabricated buttresses arranged in the longitudinal direction of the tunnel at intervals; the bottom of the prefabricated track foundation is provided with receding spaces for receding the prefabricated buttresses, the prefabricated buttresses are arranged in the receding spaces, the bottoms of the prefabricated buttresses are connected with the tunnel lining, and vertical vibration isolation supports are arranged between the tops of the prefabricated buttresses and the top of the prefabricated track foundation. The side faces of the prefabricated buttresses are connected with the prefabricated track foundation through compression-shear rigidity decoupling limiters. The prefabricated track foundation provides an inertia reference, the compression-shear rigidity decoupling limiter restrains horizontal displacement and allows vertical vibration at the same time, the vertical vibration isolation support regulates and controls the vertical vibration, through the synergistic effect of all the assemblies, a three-dimensional vibration isolation system is formed, efficient attenuation of vibration energy of the high-speed rail at the specific frequency band of 20-80 Hz is achieved, and the high-speed rail vibration energy attenuation effect is improved. The vibration damping performance of 15-20 dB is guaranteed, meanwhile, the dynamic displacement of the track is within the standard limit value range of the high-speed railway track, the balance of vibration control and track smoothness is achieved, and the requirement for running of the high-speed railway at 350 km / h is comprehensively met.

The invention is suitable for the technical field of shock insulation equipment, and provides a composite buffer type shock absorber which comprises an upper fixing seat, a lower fixing seat, an elastic shock insulation unit and a plurality of transverse limiting buffers, the elastic shock insulation unit is arranged between the upper fixing seat and the lower fixing seat, the two ends of the elastic shock insulation unit abut against the friction faces of the fixing seats through sliding friction blocks, and the transverse shock absorption function is provided through sliding friction energy consumption. The four transverse limiting buffers which are arranged in an annular array mode are connected with the upper fixing base and the lower fixing base, the transverse reset capacity is enhanced and the displacement amount is limited through the elastic stretching and retracting of buffer springs and the synergistic effect of damping liquid, and the friction blocks are prevented from being disengaged; the multi-directional vibration reduction performance is further optimized, the vertical vibration isolation function and the transverse limiting function are achieved, and the problem that due to too large transverse deviation of a traditional vibration reducer, an elastic unit is torn is effectively solved.

The invention provides a magnetic levitation type mechanical damping device for ultra-low-frequency vertical vortex-induced vibration of a super-large-span bridge girder, and belongs to the field of low-frequency structure vertical vibration control. The device comprises a mounting base, a top connecting plate, a spring device, a mass block, a magnetic force compensation unit, a damping device and a plurality of guide devices, the multiple guide devices are installed between the installation base and the top connecting plate, the mass blocks are installed on the peripheries of the multiple guide devices, the magnetic force compensation units are installed on the peripheries of the mass blocks, and the mass blocks can vertically move along the guide devices under the action of the magnetic force compensation units. Wherein the spring device and the damping device are vertically arranged between the top connecting plate and the mass block in parallel. The core innovation of the invention lies in providing a magnetic active compensation mechanism, and through a gradient magnetic field with a special configuration, approximately constant upward buoyancy is generated in a TMD vertical motion stroke, so that the mass block is always in a quasi-suspension state, and complete gravity unloading and dynamic tuning separation are realized.

The invention discloses a high-rigidity structure target vibration recognition method and system based on computer vision, a terminal and a medium, and the method comprises the steps: constructing a training data set for target vibration recognition based on a bridge model, and training an EDVR model which is a video super-resolution network; obtaining a to-be-recognized image sequence, performing super-resolution processing on the to-be-recognized image sequence based on the trained EDVR model, and obtaining a fitting ellipse according to the to-be-recognized image sequence subjected to the super-resolution processing; and on the basis of the fitting ellipse, recognizing the displacement of the structural target spot and the vibration frequency of the structural target spot to obtain the vertical physical displacement of the target spot at each moment and the vertical vibration acceleration data of the target spot at each moment, and on the basis of the vertical physical displacement and the vertical vibration acceleration data, obtaining the deflection of the bridge and the frequency of the bridge. According to the invention, the EDVR model is adopted to carry out super-resolution processing on the structure target spot, so that the recognition effect on the vibration of the high-rigidity structure can be improved.