230 results about "Elastic vibration" patented technology

The invention relates to the technical field of ultrasonic gas meters, in particular to an elastic ultrasonic resonance body and an ultrasonic gas meter sensor and a metering module packaged by the elastic ultrasonic resonance body. The elastic ultrasonic resonance body comprises a piezoelectric assembly, an elastic vibration plate located on one side of the piezoelectric assembly and a conductive connection assembly connecting the piezoelectric assembly and the elastic vibration plate; the elastic vibration plate, the conductive connection assembly and the piezoelectric assembly are assembled in a laminated mode in the axis direction. The elastic vibration plate is a stainless steel plate or a titanium alloy plate; the elastic vibration plate has good elasticity, and the acoustic-electric conversion effect can be improved. According to the ultrasonic gas meter sensor obtained by packaging the elastic ultrasonic resonance body, the arrangement of a matching layer is reduced, sound energy can be gathered during emission, a sound signal is controlled to be transmitted in a narrow sound channel, the sound signal is emitted through a port with a small section, the influence of disturbance flow is reduced, the ultrasonic gas meter sensor is installed at the two ends of a Venturi flow channel to obtain a metering module, and the metering module is used for metering. The flow measurement accuracy and stability can be improved.

The invention discloses a trapezoidal sleeper track integrated construction method, and relates to the technical field of track construction, the method comprises the following steps: assembling a steel rail, a fastener and a trapezoidal sleeper into a track panel to be treated according to the length requirement of the track panel, and binding a track bed reinforcing mesh; a to-be-processed rail row is placed above the elastic vibration reduction parts of the trapezoidal sleepers, the prefabricated base sleepers are placed below the trapezoidal sleepers, the trapezoidal sleepers and the prefabricated base sleepers are fixed through angle steel or bolts to form an assembly structure, and the assembly structure and a ballast bed reinforcing mesh are bound and connected to obtain a to-be-processed device; and after the to-be-machined device is conveyed to the laying position of the construction working face, ballast bed pouring treatment and ballast bed formwork removal treatment are conducted, and construction is completed. The prefabricated foundation sleeper structure is introduced between the ballast bed and the trapezoidal sleeper, the prefabricated foundation sleeper and the ballast bed are bound through the reserved steel bars, the trapezoidal sleeper is directly arranged on the prefabricated foundation sleeper and does not need to participate in the ballast bed pouring process, the construction efficiency can be improved, and it is guaranteed that the damping effect of the trapezoidal sleeper is effectively exerted.

The utility model discloses a pump head damping structure which comprises a shell, a suction cavity, a compression cavity, a discharge cavity and an energy storage cavity are formed in the shell, the suction cavity is sequentially communicated with the energy storage cavity through the compression cavity and the discharge cavity, a water inlet pipe opening and a water outlet pipe opening are formed in the shell, and a water outlet pipe opening is formed in the shell. A water inlet pipe opening is formed in the shell, a water outlet pipe opening is formed in the shell, the water inlet pipe opening is communicated with the suction cavity, the water outlet pipe opening is communicated with the energy storage cavity, a vibration reduction cavity is further formed in the shell, an elastic vibration damping piece is arranged between the vibration reduction cavity and the energy storage cavity, the elastic vibration damping piece is connected with the vibration reduction cavity in a sealed mode, and the elastic vibration damping piece is connected with the energy storage cavity in a sealed mode. The damping structure can solve the problem that the damping effect is reduced after the damping structure works for a long time.

The invention discloses an elastic frequency identification and elastic vibration suppression method for an aircraft with a large length-diameter ratio, and the method comprises the steps: carrying out the real-time online elastic frequency identification of angular velocity information collected by an inertial navigation device, and obtaining a current identification value omega 1 of an elastic vibration frequency; correcting the identification result based on the omega1 to obtain an iteration correction value omegab of frequency identification; then combining prior information of a ground modal test to obtain a prior value omega a of the elastic vibration frequency, weighting the omega a and the omega a to obtain an acquisition value omega of the elastic vibration frequency, designing a notch filter structure based on the omega, and enabling filter parameters to be automatically adjusted along with the change of the elastic frequency; according to the invention, the elastic frequency can be identified with high precision, and the elastic vibration can be well suppressed.

The invention relates to the technical field of diesel engine connecting rod surface treatment equipment, in particular to a conveying device for diesel engine connecting rod surface treatment. Comprising a hanger rail, a rack, a tackle and a suspension mechanism, the hanger rail is arranged above the rack, a treatment groove is formed in the upper side of the rack, the tackle is slidably installed on the hanger rail, the suspension mechanism is connected with the tackle through a lifting driving piece, and the lifting driving piece is used for driving the suspension mechanism to move up and down; the suspension mechanism further comprises an elastic oscillation starting piece and oscillation starting rails installed on the two sides of the rack, the output end of the lifting driving piece is elastically connected with the suspension mechanism through the elastic oscillation starting piece, and a plurality of evenly-distributed conical protrusions are arranged on the oscillation starting rails. It is ensured that the whole surface of the connecting rod is processed under the more consistent condition; therefore, more uniform dissolution rate and surface smoothness are obtained; defects such as stripes, pitting corrosion and cloud spots caused by bubble retention or uneven current are obviously reduced in a moving state.

The invention relates to the field of hoisting machinery control, and provides a whole-process anti-swing and precise positioning self-adaptive control method and system for a crane. The method comprises the following steps: constructing a quintic polynomial speed planning model, and solving boundary conditions to obtain an S-shaped basic speed instruction for inhibiting longitudinal elastic vibration; collecting multi-source sensing data, performing Kalman filtering, and establishing a mapping relation between feedback gain and rope length and load mass; anti-swing compensation is calculated based on a two-parameter gain scheduling strategy, and saturation limitation is introduced to obtain a final driving instruction; constructing a visual double-closed-loop model, monitoring states, and realizing undisturbed switching of control modes by using an integral initial value assignment method; and setting a fault degradation and integral anti-saturation strategy. According to the invention, while flexible start-stop and millimeter-level accurate positioning are realized, the problem of swing control under variable-parameter working conditions is solved, and the operation safety is enhanced.

The invention discloses a rapid modeling method of a carrier rocket rigid-elastic-shake coupling model, which comprises the following steps of: establishing a motion equation of a carrier rocket: establishing a mass center motion equation of the carrier rocket according to a Newton's second law, establishing a motion equation around the mass center of the carrier rocket according to a moment of momentum theorem relative to the mass center, and simplifying the carrier rocket into a one-dimensional beam model; establishing an elastic vibration equation; solving force, torque and generalized force thereof; solving expressions of gravity, thrust, control force, engine swing inertia force, aerodynamic force, aerodynamic damping force, wind disturbance force, force, torque and generalized force thereof; propellant shaking is analyzed by adopting a spring-mass-damper equivalent model; propellant shaking equations in the pitching direction and the yawing direction of the carrier rocket are established, and inertia force, inertia moment and generalized force generated by propellant shaking are established; the obtained various forces, moments and generalized forces and inertia forces, inertia moments and generalized forces generated by shaking of a propellant are substituted into a motion equation of the carrier rocket to obtain a mass center motion equation, the motion equation of the rocket is around the mass center, and a six-degree-of-freedom nonlinear total dynamical model of the carrier rocket is established when the rocket tilts and tilts; elastic vibration equations in three directions of yawing and rolling are established; and solving the carrier rocket rigid-missile-shake coupling model. According to the method, rapid numerical simulation can be carried out on the carrier rocket rigid-missile-shake coupling model, the influence of a solving result on carrier rocket attitude change is analyzed, and a foundation is laid for navigation and attitude control design of the carrier rocket.

The invention provides a combined rigidity-adjustable liquid elastic vibration isolator and a rigidity adjusting method thereof, and relates to the technical field of liquid elastic vibration isolators. Required elastic rigidity is provided through a composite elastic system formed by combining rubber and an air spring; an electronic controller (ECU controller) is used for collecting and processing signals from an inner cylinder displacement sensor, an outer cylinder displacement sensor and a pressure sensor, the signals are compared and analyzed with preset target displacement difference signals of the inner cylinder and the outer cylinder, and then the duty ratio of output pulse width modulation signals is dynamically adjusted based on the comparison result. The opening and closing of an electromagnetic valve in the air spring assembly are controlled, so that the rigidity of the air spring is adjusted, and rigidity reduction caused by aging of a rubber material is compensated. According to the control scheme, the stability of the vibration isolation frequency of the liquid elastic vibration isolator is effectively maintained, and the performance reliability of the vibration isolation system in the long-term operation process is ensured.

The invention relates to the technical field of aeroelastic analysis of aero-engines, in particular to a boosting-energy complementing gliding aircraft thermal / aeroelastic coupling modeling and analysis method considering rigid-elastic coupling. A frame for simultaneously solving rigid body motion and elastic vibration is established, the amplitude and direction disturbance characteristics of thrust pulsation and the rigidity degradation effect caused by pneumatic heat generation-heat conduction are considered, and the problem of prediction deviation caused by neglecting of rigid-elastic coupling and an extreme thermal environment in traditional solving is solved. According to the method, aeroelastic response analysis of the aircraft in different load stages (full load, half load and no load) can be simulated, and hot gas bomb response under the action of thrust disturbance and extreme thermal load is solved, so that the prediction capability of dynamic behaviors of the aircraft under complex working conditions is improved; and a theoretical technical support is provided for aeroelastic response servo suppression of the boosting-energy complementing gliding aircraft in a large impact / extreme thermal environment.

The invention relates to the technical field of civil engineering, in particular to an anti-overturning vibration isolation building. The vibration isolation building comprises a vibration isolation building body, the vibration isolation building body is supported on a foundation through an elastic vibration isolation device, the vibration isolation building further comprises a peripheral supporting structure and an anti-overturning structure, and the peripheral supporting structure comprises rock soil on the periphery of the vibration isolation building body, a retaining wall or a peripheral supporting building fixedly connected with the ground foundation; the anti-overturning structure comprises at least two layers of transverse elastic supporting sets which are arranged between the vibration isolation building body and the peripheral supporting structure up and down, and each transverse elastic supporting set comprises a plurality of transverse elastic supporting devices which are arranged at intervals in the horizontal direction. The safety and reliability of a vibration isolation building main body can be greatly improved when an earthquake occurs, and the device has good vibration and earthquake double-control performance, is simple in structure, good in economical efficiency, high in cost performance, safe and reliable, and can be widely applied to various vibration isolation building projects provided with peripheral supporting structures.

The invention relates to the technical field of karst soil cave detection, in particular to a vibration alarm device for karst soil cave collapse early warning, which comprises a mounting top plate, a vibration box and an elastic fixing assembly, and is characterized in that the elastic fixing assembly is fixedly locked and mounted on the lower side of the mounting top plate and is used for movably connecting the vibration box; the upper conical spring and the lower conical spring are oppositely arranged, and the vibration sensor is fixed in the middle, so that the vibration force transmitted by the elastic fixing assembly on the mounting top plate is improved, the elastic vibration amplitude of the vibration sensor in the vibration box is improved, efficient detection is realized, and the early-stage micro-vibration signal detection rate of collapse can be improved; meanwhile, the vibration box is elastically connected through the elastic fixing assembly, the multi-direction vibration or shaking effect of the vibration box can be improved, and the vibration box of different sizes and models can be adaptively installed through the elastic fixing assembly.

The invention discloses an ammunition automatic filling robust control method based on singular system IL disturbance estimation, and aims to solve the problems of flexible transmission, parameter uncertainty, periodic external disturbance, residual vibration and the like in an automatic filling system. According to the method, a fast-slow dual-time-scale cooperative control architecture is constructed, a slow subsystem adopts a disturbance self-adaptive PD controller, low-frequency periodic disturbance is estimated and compensated online in combination with an iterative learning mechanism, and the trajectory tracking precision is improved; the fast subsystem carries out real-time estimation and feedforward suppression on high-frequency elastic vibration based on an extended state observer (ESO); and filtering and amplitude limiting are further carried out on slow and fast control inputs, a self-adaptive scheduling strategy based on tracking errors is designed, and the slow and fast control inputs are dynamically fused to generate a final control instruction. According to the method, only motor end position / speed measurement is needed, a load end sensor is not needed, high precision, high robustness and excellent vibration suppression capability are achieved, and the dynamic performance and complex condition adaptability of automatic ammunition filling are remarkably improved.

A method for composite attitude control of a spacecraft with nonlinear sloshing and large flexible appendages disclosed by the present invention belongs to the technical field of spacecraft control. The implementation method of the present invention is as follows: various non-conservative disturbance torques acting on the spacecraft during on-orbit operation are characterized by Te; the attitude motion of the spacecraft body at any angle is described by Euler quaternions; the elastic vibration of 1 to m flexible appendages is described by the assumed mode discretization method; the motion description of the equivalent spherical pendulum model of liquid sloshing is improved by using the split variable technique; a large-range motion dynamics model of a liquid-filled spacecraft with large flexible appendages is established; the spacecraft attitude dynamics model is linearized; an output feedback attitude control law for a liquid-filled flexible spacecraft designed according to the Lyaponuv stability theorem; an input shaping-output feedback composite attitude controller for a liquid-filled flexible spacecraft designed based on the output feedback attitude control law of the liquid-filled flexible spacecraft and the Euler quaternion input command, thereby realizing active vibration suppression and improving the accuracy of spacecraft composite attitude control.

The liquid elastic vibration isolator integrally comprises a liquid cavity surrounded by a vulcanized body, the upper portion of the liquid cavity is sealed by an upper cover plate, the interior of the liquid cavity is divided into an upper liquid cavity body and a lower liquid cavity body through a flow channel body, the flow channel body is provided with a liquid channel for communicating the upper liquid cavity body with the lower liquid cavity body, and a lower cover plate is assembled below the vulcanized body. A rubber elastic piece is arranged between the runner body and the lower cover plate, a lower liquid cavity is defined by the rubber elastic piece and the vulcanized body, and an air cavity is defined by the rubber elastic piece and the lower cover plate. In the initial state, the rubber elastic piece is in a bowl shape with the center protruding upwards, an upper protruding arc is formed at the center protruding position, the outer periphery of the upper protruding arc is concaved downwards to form a lower concave ring, the outer periphery of the lower concave ring protrudes upwards to form an upper protruding ring, the outer periphery of the upper protruding ring is a horizontal annular straight edge, and any adjacent shapes are in smooth transition connection. The size of the liquid cavity and the size of the air cavity are changed by changing the shape of the rubber elastic piece, and then the load transmitted to the machine body is reduced.

The invention discloses a vibration reduction drill bit, and relates to the field of petroleum and geological drilling tools, the vibration reduction drill bit comprises a joint main body and a drill bit main body which are mutually sleeved, an inner hole of the joint main body is communicated with an inner hole of the drill bit main body, and an axial elastic vibration reduction body is arranged in an axial gap between the joint main body and the drill bit main body; a radial elastic damping body is arranged in a radial gap between the joint main body and the drill bit main body; the joint body and the drill bit body are jointly provided with an anti-falling structure, and the anti-falling structure enables the joint body and the drill bit body to be mutually twisted but not separated. According to the drill bit, axial, radial and circumferential vibration reduction can be achieved, the safety of the drill bit in underground operation can be guaranteed, and when the drill bit conducts directional operation, the influence of drill bit vibration on a rotary guide tool can be effectively reduced.

The present invention relates to the technical field of blister boxes and discloses a blister box for transferring electronic chips, comprising a box body, an inner groove one is provided at the center of the box body, a plurality of evenly distributed placement grooves are provided on the lower surface of the inner groove one, a connecting plate is fixedly connected to the top of the box body, an upper and lower penetrating mounting groove is provided at the center of the connecting plate, and the interior of the mounting groove is communicated with the interior of the inner groove one, a box cover is plugged into the upper part of the interior of the mounting groove, and a mounting assembly is jointly provided between the box cover and the interior of the mounting groove; the blister box is installed and disassembled by the connecting plate and the box cover fixedly connected to the top of the box body when in use, and the box cover is easily connected to or separated from the connecting plate by the mounting assembly when installing or disassembling, thereby avoiding the elastic vibration when the traditional blister box is separated from the cover plate, which causes the electronic chip to jump out of the placement groove and collide, and the blister box is easy to use.

The utility model relates to the technical field of seed screening equipment, in particular to a wide-groove-body vibrating conveyor. A wide-groove-body vibrating conveyor comprises a bottom frame, three sets of supporting arms are sequentially arranged on the upper portion of the bottom frame from front to back, the upper ends of the supporting arms are fixedly connected with elastic vibrating supporting pieces, the upper ends of the elastic vibrating supporting pieces are fixedly connected with a mounting frame, and the upper portion of the mounting frame is fixedly connected with a groove body. The tank body is provided with an impurity removing assembly and a screening assembly from bottom to top. According to the screening assembly, when a screen needs to be replaced, only a pressing handle needs to be pressed upwards, a pull ring of the pressing handle can be separated from a fixing hook, at the moment, only a connecting rod needs to be lifted upwards, a pressing frame can be lifted upwards along with the pressing handle, and then the pressing frame can make contact with pressing limitation on a screen module; and therefore, the defects in the prior art are overcome, and high practicability is achieved.

A torsional vibration damper comprising a primary mass (2) to be coupled to an input element, a secondary mass (6) to be coupled to an output element, and a spring damper arrangement (10) coupled to the disk-shaped primary mass (2) and the secondary mass (6), comprising several arc springs (11) against which the primary mass (2) and the secondary mass (6) are rotatable relative to each other, wherein the secondary mass (6) has an annular spring channel (9) in which the arc springs (11) are received, and wherein at least one elastic vibration damper device (22, 26) is provided on the primary mass (2). The arrangement is characterized in that the secondary mass (6) has a disk-shaped flange section (7) which transitions into the spring channel (9) at its outer circumference and to which a hub flange (17), via which the connection to the output element is made, is attached.

The application relates to the technical field of cleaning spray heads, in particular to a nano-bubble-assisted cleaning spray head and system, which comprises a mounting plate, a flow guide connecting pipe and a bubble nozzle. The top of the mounting plate is fixedly connected with a positioning clamping base, the top of the positioning clamping base is detachably connected with a top plate, the positioning clamping base is used for positioning the flow guide connecting pipe, the flow guide connecting pipe is fixedly connected with the bubble nozzle and is in internal communication, the surface of the bubble nozzle is provided with elastic vibration pieces, the top surface of the top plate is provided with vibration plates corresponding to the elastic vibration pieces, the surface of the bubble nozzle is annularly arranged with a plurality of elastic vibration pieces, and the elastic vibration pieces are connected with elastic connecting rings. The application aims at solving the problems that impurities will gradually accumulate to form blockages, the internal flow channel of the nozzle will become narrow, the flow of cleaning liquid will attenuate, and the pressure will be unstable with the prolongation of cleaning time.

The invention belongs to the technical field of functional composite materials, and particularly relates to high-damping organic silicon-based composite hydrogel as well as a preparation method and application thereof. The method comprises the following steps: mixing polydimethylsiloxane, silicate ester and a polyvinyl alcohol aqueous solution in proportion, and emulsifying in an ultrasonic microreactor to form an oil-in-water emulsion with specific particle size distribution. Wherein after the oil phase in the emulsion is subjected to ultrasonic action, rapid chemical crosslinking is performed to form organic silicon microspheres, and finally the organic silicon-based composite water-based damping material with the damping factor larger than 0.5 is prepared. By regulating and controlling the particle size distribution of the organic silicon microspheres, the stacking density of the microspheres in the damping material is maximized, so that the friction between the microspheres and a gel network is enhanced, and high damping is realized. The elastic composite organic silicon material has good damping performance, molding processability, recoverability and biocompatibility, raw materials are environment-friendly and low in cost, and the elastic composite organic silicon material is suitable for large-scale production and can be widely applied to the fields of flexible wearing, elastic vibration isolation, flexible protection and the like.

To obtain strong vibration in a wide frequency range.SOLUTION: The vibration actuator is a vibration actuator that elastically vibrates a movable part supported on a fixed part by an elastic member by a driving force of a driving part, and the driving part includes a magnet included in the fixed part and disposed to form a pair facing each other via a space, and a coil included in the movable part and disposed in the space, and generates the driving force by an interaction between a magnetic field by the magnet and a current flowing through the coil. The movable portion further includes a conductive plate-shaped portion disposed in the space, and the plate-shaped portion generates an eddy current therein with movement of the movable portion in the magnetic field and damps vibration of the movable portion by interaction between the magnetic field and the eddy current.SELECTED DRAWING: Figure 11

The invention provides a design method of a liquid elastic vibration isolator, the whole liquid elastic vibration isolator comprises a liquid cavity surrounded by a vulcanized body, the upper part of the liquid cavity is sealed by an upper cover plate, the interior of the liquid cavity is divided into an upper liquid cavity and a lower liquid cavity by a flow channel body, the flow channel body is provided with a liquid channel for communicating the upper liquid cavity with the lower liquid cavity, and a lower cover plate is assembled below the vulcanized body. A rubber elastic piece is arranged between the runner body and the lower cover plate, a lower liquid cavity is defined by the rubber elastic piece and the vulcanized body, and an air cavity is defined by the rubber elastic piece and the lower cover plate; wherein the whole vulcanized body is divided into four connected petals in the circumferential direction, the rubber spring of two opposite petals is in the shape of laminated rubber defined by an outer barrel with an inner flange and an inner barrel with an outer flange, the rubber spring of the other two opposite petals is in the shape of a sector ring, and the sizes of an upper liquid cavity, a liquid channel and the laminated rubber are designed according to the following formula. And further determining each size of the liquid elastic vibration isolator.

The utility model relates to the technical field of pest control, in particular to a spore release storage container which comprises a barrel and an electric control air valve, a spore outlet is formed in the peripheral side wall of the barrel, the electric control air valve is detachably assembled at the spore outlet, and openings are formed in the two ends of the barrel. The opening is used for adding spores into the cylinder tank or removing spores in the cylinder tank, a first sealing cover and a second sealing cover are detachably assembled at the two ends of the cylinder tank respectively, an elastic vibration plate is arranged in the first sealing cover in the cross section direction of the first sealing cover, and the elastic vibration plate is used for making contact with an external vibration source; and the elastic vibration plate which vibrates at high frequency is used for changing the size of the internal space of the cylinder so as to intermittently extrude spores from the electric control air valve. According to the storage container for releasing the spores, the electric control air valve is closed to prevent moisture in external air from entering the cylinder tank, and germination of the spores in the medicine powder barrel is not prone to being caused, so that intrusive activity of the spores is effectively prevented from being lost, and the disease and pest control effect of the spores is obviously improved.

The utility model discloses a shock insulation device for rack, including installation base, installation base surface is provided with replaceable elastic vibration isolation subassembly, and installation base top is provided with the mounting plate through replaceable elastic vibration isolation subassembly, and the mounting plate top is fixedly provided with the rack, and the installation base top is provided with the buffer component convenient for the buffer of replaceable elastic vibration isolation subassembly, and the installation base top is provided with the temporary support component, and the installation plate is supported through temporary support component, so that the installation plate will not move downward, and the spring in replaceable elastic vibration isolation subassembly is replaced, when spring replacement is completed, the support effect of temporary support component to installation plate is cancelled, so that can replace the spring alone, and can replace the spring of different positions alone, avoid the situation that needs to take down the whole spring shock absorber and replace, thereby the part that can use is reserved, and the maintenance cost of rack shock insulation device is reduced.

Provided is a control device controlling an electromagnetic actuator that drives an operation device, supported in an elastically vibratable manner by an elastic support part, in one direction of a vibration direction of the operation device to vibrate. The control device includes a circuit that applies a main driving signal to a coil of the electromagnetic actuator to start vibration of the operation device in response to a touch operation on the operation device, then applies a sub-driving signal to the coil to adjust an attenuation period of the vibration. The sub-driving signal has a variable voltage varying with an offset voltage, as a center value, offset from a zero voltage, and a waveform that indicates a variation in the variable voltage is a sine function curve or a cosine function curve. The circuit applies the sub-driving signal while changing the offset voltage for each cycle.

The invention discloses a flexible connecting rod mechanical arm fixed time adaptive neural network compound control method which comprises the following steps: decomposing a flexible connecting rod mechanical arm model into a slow subsystem and a fast subsystem based on a singular perturbation theory, and defining a slow subsystem state variable and a fast subsystem state variable in the decomposition process; and the slow subsystem comprises an unmodeled dynamic state, and meanwhile, the control moment in the model is decomposed into a tracking controller used for controlling the slow subsystem and a flexible suppression controller used for controlling the fast subsystem. According to the technical scheme, elastic vibration of the flexible mode is relieved, meanwhile, tracking of the time-varying expected position by the mechanical arm is achieved, and the mechanical arm is stable within the fixed time.

The utility model discloses a sample vibration suppression structure and an alternating gradient magnetometer, and relates to the technical field of mechanical vibration suppression, the sample vibration suppression structure comprises a support assembly and a sample suspension structure mounted on the support assembly; the sample suspension structure comprises an elastic vibration isolation unit and a sample support connected with the elastic vibration isolation unit, the sample support is used for bearing a sample in the magnetic field action area, and the elastic vibration isolation unit is used for attenuating vibration transmission from the supporting assembly to the sample support. The elastic vibration isolation unit can isolate vibration near the measurement frequency and larger than the measurement frequency, so that vibration noise can be weakened, and the influence of the vibration noise on magnetic measurement is reduced; according to the structure, a complex active vibration isolation control system does not need to be additionally arranged, passive vibration isolation is achieved through pure mechanical elastic design, the equipment cost and energy consumption are reduced, and electronic interference possibly introduced by the active vibration isolation system is avoided.

The present invention discloses a ballastless track vibration reduction structure that integrates induction power generation and frequency modulation vibration reduction, belonging to the technical field of rail transit. The track plate and base plate of the present invention are laid longitudinally along the track line, with the track plate located above the base plate; an adjustment layer is arranged between the track plate and the base plate; an elastic vibration reduction layer is provided between the base plate and the piezoelectric device layer, and the elastic vibration reduction layer is filled in a limiting structure within the base plate; a silicon steel sheet iron core structure of an electromagnetic coil is provided within the elastic vibration reduction layer located in the limiting structure; the piezoelectric device layer is located between the adjustment layer and the base plate, and the piezoelectric device layer is connected to the electromagnetic coil via a wire. The present invention utilizes piezoelectric materials and magnetorheological elastomer materials to achieve the integration of induction power generation and frequency modulation vibration reduction. When the pressure is insufficient to cause the piezoelectric device to output current, the magnetorheological elastomer material still has the mechanical properties of an ordinary rubber elastomer, and the entire structure can still ensure the vibration reduction function while also achieving power-off protection.

To obtain strong vibrations without increasing weight. [Solution] The vibration actuator is a vibration actuator that causes a movable part housed inside a housing and elastically supported by the housing to vibrate elastically by the driving force of a drive unit, the drive unit having a pair of magnets fixed inside the housing so as to face each other across space, and a coil included in the movable part and arranged in space, and generates a driving force by the interaction of the magnetic field from the magnets and the current flowing through the coil, the housing has at least a pair of first leaf springs that elastically support the movable part, the first leaf springs having a connecting part connected to the housing, a pair of arm parts that branch off symmetrically from the connecting part and curve in a meandering shape, a confluence branching part where the pair of arm parts merge and branch off midway between the connecting part and the ends of the pair of arm parts, and a pair of support parts arranged at the ends of the pair of arm parts and supporting the movable part.

The utility model discloses a dust discharging device for a dust remover, which belongs to the field of dust removing equipment and comprises a dust removing box, a first dust discharging hopper and a second dust discharging hopper are fixedly communicated with the bottom of the dust removing box, a fixed disc is fixedly connected in the dust removing box, and a rotating disc is rotatably connected to the inner side of the fixed disc. A rotating driving unit for driving the rotating disc to rotate is arranged in the dust removal box, a plurality of through grooves are formed in the rotating disc, a wind shield is fixedly erected in the dust removal box and is in sealing contact with one of the through grooves, the bottom of each through groove is fixedly communicated with a first hose, and the bottom of each first hose is fixedly connected with a filter bag through a framework; a vibration motor is fixedly connected to the bottom of each filter bag, a pair of elastic vibration structures is arranged on the framework of each filter bag, and the elastic vibration structures are connected to the rotating disc. According to the pulse dust removal device, the problem of low dust removal and dust discharge efficiency during pulse dust discharge due to light floating dust on the filter bag in the prior art is solved.