509 results about "Vertical vibration" patented technology

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 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 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 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.

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 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 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 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 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.

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

The invention provides a rail vehicle derailment simulation method and device, electronic equipment and a storage medium, and the method comprises the steps: obtaining a vehicle-rail system which comprises a rail vehicle model, a steel rail model and a rail plate-sleeper-fastener model; performing model verification on at least one of critical speed, operation stability index and axle box vertical vibration acceleration of the vehicle-rail system; obtaining a derailer model, wherein the derailer model comprises a base, a wedge block and a baffle plate; an acceleration sensor is arranged on a vehicle-rail system, simulation is carried out on the rail vehicle under different working conditions according to simulation configuration, simulation data under different working conditions are collected through a speed sensor, and the simulation data comprise wheel impact corresponding values and vehicle speeds; and calculating the relationship between the wheel impact corresponding value and the vehicle speed to obtain a derailment impact simulation result of the railway vehicle. The method has the beneficial effect that the simulation accuracy of the railway vehicle is improved.

The present invention provides a vibrating device for displacing a pile into soil, such as a seabed, in particular selected from insertion into and extraction from the soil, the vibrating device comprising: a ring for engaging the pile, the ring comprising at least two sections coupled to each other to form a ring, the at least two sections are coupled via at least one coupling actuator for setting a circumferential dimension of the ring to set an engagement force of the ring with the pile, at least one of the sections being provided with at least one vibration actuator for vibration of the at least one vibration actuator. And at least one vibration actuator adapted to provide a vertical vibration of the pile at a first vibration frequency and a torsion of the pile at a second torsion frequency, applying an effective force to the pile in a combined manner, thereby displacing the pile into the soil, and at least one coupling actuator adapted to apply an engagement force adapted to transfer an effective force to the pile.

The utility model provides a fluid medium pressure gauge adopting an embedded damping device, which comprises a damping plate, bottom plates are arranged on two sides in a sliding chute, a supporting seat is movably arranged at the top of each bottom plate, an outer protection plate is mounted at the top of each supporting seat, and a pressure gauge body is mounted on each outer protection plate. An inner buffer rubber block is arranged between the bottom of the pressure gauge body and the outer protection plate; according to the utility model, the top of the damping plate is provided with the supporting seat sliding on the bottom plate, the top of the supporting seat is provided with the outer protection plate, the pressure gauge body is supported by the outer protection plate, and one side of the supporting seat is provided with the damper, so that the pressure gauge body can be damped through cooperation of the supporting seat and the damper when being subjected to transverse vibration; and meanwhile, the inner buffer rubber block is arranged between the pressure gauge body and the outer protection plate, so that the transmitted vibration can be reduced through the inner buffer rubber block when the pressure gauge body is subjected to vertical vibration, and the impact on the pressure gauge body is reduced.

The application is a kind of force and three-dimensional acceleration composite sensor and its using method, belongs to composite sensor field. Its technical scheme is, a kind of force and three-dimensional acceleration composite sensor, including force detection component and three-dimensional acceleration detection component, force detection component includes annular force core body electrode column, and lower quartz ring and upper quartz ring are respectively arranged on its upper and lower ends, impact platform is arranged above the upper quartz ring, and the lower quartz ring is attached to the base;Three-dimensional acceleration detection component is located inside annular force core body electrode column, including center integrated column, and four horizontal vibration arms and multiple vertical vibration arms are arranged on the outer periphery of the center integrated column, and acceleration detection unit is arranged on the end of each vibration arm away from the center integrated column. The sensor integrates force and three-dimensional acceleration measurement function, can synchronously collect two kinds of signals, the annular structure and the internal setting improve the protection to acceleration detection component, the cantilever structure converts impact force into vibration, reduces the impact suffered by detection unit, and is suitable for instantaneous high impact force working condition.

The invention relates to the technical field of continuous casting, in particular to a composite vibration continuous casting crystallizer and a working method thereof. The composite vibration continuous casting crystallizer comprises a crystallizer body composed of wide-edge side walls and narrow-edge side walls, and the two oppositely-arranged wide-edge side walls and the two oppositely-arranged narrow-edge side walls jointly form a cavity for containing metal melt and generating a continuous casting billet. The wide-edge side wall is connected with the horizontal vibration device, the narrow-edge side wall is connected with the vertical vibration device, the wide-edge side wall vibrates in the horizontal direction during continuous casting, and the narrow-edge side wall vibrates in the vertical direction during continuous casting. According to the continuous casting crystallizer, a vibration mode combining horizontal vibration and vertical vibration is adopted, continuous casting billets with slight vibration marks or even no vibration marks can be obtained, meanwhile, a liquid casting powder channel is smooth, and the continuous casting billets in the crystallizer can be cooled more sufficiently and evenly.

The application discloses a left-right splicing type motorcycle control method and system based on rigid connection. The scheme proposes a rigid-flexible integrated construction method, and a flexible control system is constructed on a rigid truss. The rigid truss guarantees the structural integrity of the vehicle body and the conduction of force, the Ackermann geometry correction model is used to correct the Ackermann geometry relationship, the sensor data is used to correct the steering angle and driving torque in real time, the dynamic weight model is used to predict the controller to coordinate the steering and torque distribution of the two sides of the wheel, and the steering error, the vertical vibration error and the slip rate error are optimized, so that the multi-objective cooperative control problems such as load transfer, vertical disturbance, differential constraint and steering stability are solved. The application takes into account the overall structural rigidity and the control system flexibility, can effectively suppress the slip and vibration caused by the road disturbance, significantly improve the response speed and precision of steering and driving, and ensure the stability and safety under complex road conditions.

The utility model belongs to the technical field of automobile parts, and provides an automobile seat with a vibration function and an automobile, which comprises a seat body, a hollow cavity arranged in a backrest of the seat body, a bearing plate movably connected in the hollow cavity, and a vertical vibration plate arranged above the bearing plate, a sliding rod is arranged on the side wall of the side, away from the human body backrest, of the vibration plate, and a positioning clamping plate is arranged at the other end of the sliding rod. The device further comprises a power rotating disc, the power rotating disc is located above the bearing plate, a vertical power rod body is arranged on the power rotating disc and fixedly connected to the eccentric position of the power rotating disc, the outer edge of the power rotating disc is movably attached to the positioning clamping plate, and the distance from the axis of the power rod body to the circle center of the power rotating disc is one half of the radius of the power rotating disc. According to the utility model, the vibration module in the seat is interconnected with the automobile, so that a driver can be reminded in time when the fatigue driving time is up.

The invention belongs to the technical field of box girder construction, and particularly relates to a small box girder industrial intelligent construction method which comprises the steps that S1, a bottom die and side dies are installed; s2, binding bottom plate and web reinforcing steel bars: binding a bottom plate and a web reinforcing steel bar framework of the box girder on the bottom template, meanwhile, pre-burying a prestressed pipeline, reserving a mud jacking hole and an exhaust hole, and arranging a horizontal vibrator in the prestressed pipeline; s3, mounting an inner mold and binding top plate steel bars; s4, end formworks are installed; a bottom plate, a web plate and a top plate are sequentially poured, vertical vibration is conducted through an insertion type vibrator, horizontal vibration is conducted through a horizontal vibrator, self-adaptive traction is conducted on the prestressed pipeline while vibration is conducted, after pouring is completed, geotextile or a plastic film covers the prestressed pipeline, and moisturizing maintenance is conducted; s6, the formwork is dismantled; s7, prestress tensioning is conducted; and S8, duct grouting and anchor sealing are conducted. The problem that the prestressed pipeline deforms due to the fact that concrete is vibrated unevenly manually can be solved.

The application provides a kind of compaction quality continuous detection evaluation method based on the extent of hunting, comprising: carrying out compaction test: real-time collection of vertical vibration acceleration of vibrating wheel, vertical vibration acceleration of upper rack and eccentric block position data;Calculate the vibrating wheel-filler interaction force of each detection period per hour;Vibrating wheel-filler interaction force curve is analyzed, to determine whether hunting phenomenon occurs in the detection period, and the compaction hunting value CJV calculation model of different working conditions is used to calculate the compaction hunting value CJV corresponding to the detection period;Establish compaction quality detection evaluation model based on CJV. The compaction quality of rolling surface is continuously detected and evaluated by using CJV. The application realizes real-time, continuous and full coverage detection of compaction quality, which can effectively guarantee the compaction quality. The continuous detection and evaluation method provided by the application is suitable for continuous detection and evaluation of compaction quality of various fillers.

The application discloses a sound production monomer and a sound production module, and relates to the technical field of sound energy conversion. The sound production monomer comprises a magnetic circuit system and a vibration system. The magnetic circuit system is formed with a first magnetic gap and a second magnetic gap which are arranged at intervals along a second direction. The vibration system vibrates along a first direction. The first direction and the second direction are perpendicular to each other. The vibration system comprises a diaphragm, a first voice coil, a second voice coil and a magnetic assembly. The first voice coil is located in the first magnetic gap, and the second voice coil is located in the second magnetic gap. One side of the first voice coil is connected with the diaphragm, and the other side of the first voice coil is connected with the magnetic assembly. One side of the second voice coil is connected with the diaphragm, and the other side of the second voice coil is connected with the magnetic assembly. The current directions of the first voice coil and the second voice coil are the same. The magnetic assembly can provide an acting force opposite to the restoring force direction of the diaphragm for the first voice coil and the second voice coil. The driving force of the first voice coil and the second voice coil on the diaphragm is effectively increased, and the performance of the sound production monomer is improved.

The utility model discloses an airport grassland runway flatness testing device based on an acceleration sensor. The airport grassland runway flatness testing device comprises a vehicle body, an integration module and a testing module, wherein the integration module comprises a processor and a control panel; the testing module comprises the acceleration sensor, a demodulator and positioning equipment; the acceleration sensor and the demodulator are used in a combined mode, the vertical vibration acceleration of a certain point position in the running process of the testing device is obtained, the processor obtains the vertical displacement of the point position through data processing and calculation, then the runway vertical section elevation can be obtained, BBI is obtained through calculation according to an existing BBI calculation method, and the BBI is output to the control panel. The method can be used for evaluating the flatness of the grassland runway on site and guiding laying and maintenance of the airport grassland runway by using real-time data.

The utility model relates to the technical field of plastic particle drying, and discloses a plastic particle drying device which comprises a material drying barrel and a supporting shaft connected with the upper end and the lower end of the material drying barrel in a sliding mode, a layered drying assembly is arranged on the outer side face of the supporting shaft, and a vertical vibration set is arranged below the supporting shaft. The vertical vibration assembly comprises a cylindrical cam located below the supporting shaft, a sliding cone with a downward cone tip is arranged in the center of the bottom of the supporting shaft, and the cone tip of the sliding cone abuts against the inclined face of the cylindrical cam. By arranging the vertical vibration assembly, on one hand, plastic particles in the material containing disc are more dispersed, gaps are formed among the plastic particles, the contact area between the plastic particles and hot air is increased, and the drying efficiency can be improved; and on the other hand, in the vibration process, due to the inertia effect, water attached to the surfaces of the plastic particles is quite easily separated from the plastic particles, and the whole drying process is further accelerated.

The invention relates to the technical field of structure testing, in particular to an overhead rigid suspension expansion joint fatigue test device and method, and the device comprises a fatigue host module which provides reciprocating vertical vibration power for an expansion joint; the comprehensive platform module is used for providing reciprocating horizontal vibration power for the fatigue host module; the control system module comprises a strain data processing unit which is used for constructing a three-dimensional strain field model and calculating stress distribution based on the strain data; the phase compensation generation unit dynamically generates lag compensation time of the horizontal vibration relative to the vertical vibration; and the driving control unit is used for adjusting the phase of the horizontal vibration in real time based on the lag compensation time, so that the horizontal vibration reaches the maximum displacement value at the vertical vibration peak moment. According to the invention, the authenticity, accuracy and reliability of the fatigue test of the expansion joint can be effectively improved, the phase and displacement synchronization of horizontal vibration and vertical vibration can be dynamically adjusted through a linkage control mechanism, and the spatial multidirectional composite fatigue load in actual operation can be reproduced.

The invention discloses an energy-saving diesel generating set with a damping structure, and relates to the technical field of energy-saving diesel generating sets. Comprising a fixing plate, the top of the fixing plate is fixedly connected with elastic plates, the elastic plates are trapezoidal, the top of the fixing plate is fixedly connected with an annular plate, the top of the fixing plate is provided with a top plate, the top plate is fixedly connected with the ends, away from the fixing plate, of the elastic plates, and the multiple elastic plates are evenly arranged on the peripheral edge of the top plate. According to the energy-saving diesel generating set with the damping structure, the multiple elastic plates are arranged on the edge of the top plate, stress of the fixing plate and the top plate is mainly concentrated in the vertical direction, when the inclined structures of the trapezoidal elastic plates bear vertical pressure, vertical impact force is converted into lateral dispersion force through elastic deformation of the bevel edges, and the damping effect is achieved. Transmission of vibration to a foundation below the base or a unit above the base is reduced, and fatigue damage to parts caused by long-term vertical vibration is reduced.