126 results about "Longitudinal vibration" patented technology

The invention discloses a longitudinal bending composite type six-degree-of-freedom piezoelectric active vibration isolation platform and a working method thereof. The vibration isolation platform adopts a modular structural design, a vibration isolation connecting platform and a base platform are sequentially arranged from top to bottom and are connected through four uniformly distributed vibration isolation modules, and each vibration isolation module forms a multi-stage vibration transmission structure through a fixed base, a transducer base, a piezoelectric transducer, an amplitude-change pole, a pre-tightening bolt and a small flexible hinge. The control module collects feedback signals of a first acceleration sensor arranged on the vibration isolation connecting platform and feedforward signals of a second acceleration sensor arranged on the base platform, and outputs 12-channel control signals to the piezoelectric transducers of the vibration isolation modules after signal processing. The piezoelectric transducer is driven to generate a composite motion mode of longitudinal vibration and multidirectional bending vibration, and active suppression of longitudinal vibration and radial bending vibration in any direction of a vibration isolation object is achieved. The device has the advantages of multi-degree-of-freedom vibration isolation, compact structure, lightweight design, independent control, high stability and the like, and has important application value in the fields of space reflecting mirrors, micro-nano manufacturing equipment vibration control and multi-degree-of-freedom vibration isolation systems.

The invention relates to the technical field of insulator fault early warning, in particular to an insulator mechanical pulse electrification early warning system. The system comprises a pulse signal acquisition module which is used for setting sampling points at equal intervals at each height of an insulator and acquiring vibration pulse signals of the sampling points; the vibration abnormity identification module is used for determining the transverse vibration abnormity degree and the longitudinal vibration abnormity degree of the vibration pulse signal of each sampling point; the pulse signal denoising early warning module is used for acquiring a standard comprehensive abnormal index of the vibration pulse signal of each sampling point; identifying the non-low-frequency energy intensity of the vibration pulse signal of each sampling point, and adjusting a fixed threshold value in a wavelet denoising algorithm in combination with the standard comprehensive abnormal index so as to perform defect early warning on the insulator by using the denoised vibration pulse signal; according to the invention, the accuracy of defect early warning of the insulator is improved.

The invention discloses a sandwich type piezoelectric driving double-shaft output mobile robot and a working method thereof.The sandwich type piezoelectric driving double-shaft output mobile robot comprises a sandwich type piezoelectric transducer, a pre-pressure applying mechanism, a driving wheel unit, a first output shaft, a second output shaft, a base body frame and a connecting plate, and a clamping mechanism is not arranged on a stator base body of the sandwich type piezoelectric transducer; a single pin of the pre-pressure applying mechanism and a through hole in the middle of a stator node beam are used for restraining, automatic rolling transmission of contact force is achieved under the condition of matching of the pin hole, and pre-pressure transmitted by the pre-pressure applying mechanism achieves force balance under the counter-acting force generated when a first driving foot and a second driving foot of the sandwich type piezoelectric transducer make contact with the curved surface of an output shaft. The elliptical motion trail direction of the stator driving foot can be controlled by controlling the electric signal phase difference of the longitudinal vibration piezoelectric ceramic set and the bending vibration piezoelectric ceramic set, forward and reverse motion of the first output shaft and the second output shaft is achieved through friction contact, and the mobile robot achieves forward, backward and rapid locking motion.

The application relates to a two-dimensional adjustable ultrasonic vibration auxiliary cutting device which comprises a vibration flat plate, a supporting base, four supporting columns, a stepped horn a, a stepped horn b, a longitudinal vibration piezoelectric transducer a and a longitudinal vibration piezoelectric transducer b. The vibration flat plate is of a stepped structure. The four supporting columns are vertically arranged, the upper ends of the four supporting columns are fixedly connected with the four corners of the vibration flat plate respectively, and the lower ends of the four supporting columns are fixedly connected with the supporting base simultaneously. The stepped horn a and the stepped horn b are horizontally arranged. The small end of the stepped horn a is fixedly connected with the center position of the left side surface of the vibration flat plate perpendicularly, and the large end is fixedly connected with the longitudinal vibration piezoelectric transducer a. The small end of the stepped horn b is fixedly connected with the center position of the back side surface of the vibration flat plate perpendicularly, and the large end is fixedly connected with the longitudinal vibration piezoelectric transducer b. The device has the characteristics of simple structure, less energy dissipation and good machining stability, and can realize efficient and low-damage milling and pin machining.

The utility model discloses a kind of car sunroof guide rails with buffering noise reduction structure, it is related to sunroof guide rail field, this kind of car sunroof guide rail with buffering noise reduction structure includes the guide rail main body extending along first direction, outwardly extending mounting plate is formed on the guide rail main body one side outer wall, multiple mounting holes are opened on mounting plate, for bolt connection frame, bolt is passed in mounting hole when connecting;This kind of car sunroof guide rail with buffering noise reduction structure forms three-dimensional grid structure by buffer groove and extension groove, main rubber pad absorbs vertical impact, extension rubber pad inhibits longitudinal vibration, double elastic deformation greatly reduces the area of mounting plate contact part after installation with frame, blocks vibration transmission path, rubber ring in the protruding part groove isolates bolt and mounting plate metal contact, eliminates high-frequency friction abnormal sound.

The invention provides an ultrasonic transducer and ultrasonic cleaning equipment, the ultrasonic transducer comprises a piezoelectric exciter and a vibration radiant panel, the vibration radiant panel is fixed on the piezoelectric exciter, a power supply is electrically connected with the piezoelectric exciter, so that the piezoelectric exciter can generate longitudinal vibration, and the longitudinal vibration of the piezoelectric exciter can excite bending vibration of the vibration radiant panel. The longitudinal vibration sandwich type piezoelectric ultrasonic transducer solves the defects that an existing longitudinal vibration sandwich type piezoelectric ultrasonic transducer is small in radiation area, weak in longitudinal displacement amplitude, long in longitudinal size and the like to a great extent, and has the advantages of being small in space needed by operation, large in sound radiation area and sound radiation power, small in size and the like. The ultrasonic transducer can be widely applied to the application requirements of miniaturization and thinning of the installation space of the ultrasonic transducer. Meanwhile, the longitudinal bending displacement amplitude conversion ratio of the ultrasonic transducer can be influenced by the length, and / or the width and / or the thickness of the vibration radiant panel, so that the longitudinal bending displacement amplitude conversion ratio of the ultrasonic transducer is further improved through the size of the vibration radiant panel.

The invention relates to the technical field of ultrasonic knife equipment, in particular to a method for detecting and determining a rubber coating point of a waveguide rod, and aims to solve the problem that the method for detecting and determining the rubber coating point of the waveguide rod is poor in effect. According to the technical scheme, the method comprises the following steps: obtaining an initial simulation waveguide rod structure diagram, and extracting a displacement diagram of longitudinal vibration of the initial simulation waveguide rod to obtain an initial '0' point location diagram; carrying out processing heat treatment according to the initial simulation waveguide rod structure diagram to obtain a bare waveguide rod, and testing static data of the bare waveguide rod, including a bare waveguide rod impedance value R; and taking the impedance value R as a reference value, testing a dynamic real-time impedance value R0 when the bare waveguide rod vibrates under the working frequency, if R-R0 is less than or equal to a preset value, making the bare waveguide rod by using the initial simulation waveguide rod structure diagram to continue testing, and testing dynamic test data of the bare waveguide rod by using the movement of the interference assembly part instead of positioning encapsulation. The theoretical deviation of pure acoustic simulation is reduced, and the cost of repeated mold opening verification is reduced.

The utility model discloses an automobile seat cushion spring assembly, and relates to the technical field of automobile seats, the automobile seat cushion spring assembly comprises four serpentine spring single bodies, the four serpentine spring single bodies are arranged side by side at equal intervals, an L-shaped cross beam is arranged between one ends of the four serpentine spring single bodies, and the other ends of the four serpentine spring single bodies are connected with the serpentine spring single bodies. L-shaped cross beams are arranged between the other ends of the four serpentine spring single bodies and connected with the serpentine spring single bodies in a plastic coating mode, rectangular cross beams are arranged between the other ends of the four serpentine spring single bodies and connected with the serpentine spring single bodies in a plastic coating mode, an elastic connecting plate is arranged between every two adjacent serpentine spring single bodies, and the two ends of each elastic connecting plate are connected with the serpentine spring single bodies in a plastic coating mode. According to the automobile seat cushion spring assembly, the elastic connecting plates are installed between every two adjacent serpentine spring single bodies, vibration generated in the longitudinal direction can be buffered through the elastic connecting plates, the longitudinal tensile property is improved, and the using effect of the spring assembly is improved.

The invention discloses a vibration suppression and energy efficiency improvement method for a marine propulsion system, and belongs to the technical field of ship vibration control and energy efficiency optimizing.The method comprises the steps that vibration signals at a middle bearing, a propeller hub and a main engine base are collected, and three paths of filtering signals are obtained through band-pass filtering; front and rear flow velocity signals and main shaft rotating speed signals of a propeller are collected, and the ratio of the flow velocity difference to the rotating speed difference is calculated to obtain an energy efficiency coefficient; the three paths of filtering signals are multiplied by the energy efficiency coefficient to generate three paths of control signals, and the three paths of control signals are output to the three piezoelectric actuators to generate displacement amounts which act on a bearing shell, the inner wall of a propeller hub and a main engine base; when the propulsion shafting vibrates longitudinally, the metal push rod drives the coil to reciprocate between the permanent magnets to generate induced current, the induced current is stored in the storage battery after being rectified and supplied to the hydraulic controller to adjust the oil flow of the hydraulic cylinder according to a control signal, and graded suppression of multi-source vibration and recycling of vibration energy are achieved. And the vibration suppression effect and the energy efficiency level of the system are obviously improved.

The invention discloses a radial ultrasonic vibration grinding wheel suitable for high-speed grinding and a using method. The grinding wheel comprises a grinding wheel resonance outer ring, a non-contact electric energy transmission device, an ultrasonic transducer, a grinding wheel front cover plate, a grinding wheel rear cover plate and a grinding material layer. Ultrasonic transducers in a longitudinal vibration mode are uniformly mounted on the inner circumferential surface of the resonant outer ring, and power is supplied to the transducers in a non-contact manner, so that the resonant outer ring generates radial ultrasonic vibration in an expansion vibration mode. The abrasive material layer is made of cubic boron nitride or diamond abrasive particles and is fixed to the outer circumferential face through brazing or electroplating, and efficient cutting of a workpiece is achieved. And the grinding force can be effectively reduced and the machining efficiency and the surface quality can be improved by cooperating with rotation and feeding movement of a machine tool spindle. Test results show that the method is suitable for precise grinding of hard and brittle materials and difficult-to-machine materials under the conditions of high speed and large cutting depth.

The invention provides a multi-dimensional vibration platform with oppositely-arranged double-sandwich piezoelectric actuators and an excitation method of the multi-dimensional vibration platform, and belongs to the technical field of high-frequency vibration engineering and micro-nano machining.The vibration platform comprises a center platform, the two oppositely-arranged piezoelectric actuators, two end covers and two bolts, wherein the center platform is integrated with the tail end platform, the two flexible hinges and the two amplitude-change poles, and the center platform is slender and is in mirror symmetry about the longitudinal symmetry plane of the tail end platform. The piezoelectric actuator comprises a longitudinal vibration ceramic group, a bending vibration ceramic group around the Y axis and a bending vibration ceramic group around the Z axis, translation along the X / Y / Z axis and rotation around the Y / Z axis can be realized through in-phase or anti-phase excitation different combinations under the condition of not increasing extra driving channels, and five-degree-of-freedom high-frequency micro-vibration output can be achieved at most. The structure has high symmetry, low parasitic vibration, compact size and high integration, and is suitable for precise engineering scenes such as micro-nano processing, laser-assisted manufacturing, cell manipulation and active vibration suppression.

The invention relates to the technical field of medical instruments, in particular to a piezoelectric driving miniature optical probe for cerebrovascular interventional imaging, which comprises a glass tube base body, a single piezoelectric ceramic piece and the like, and is characterized in that the glass tube base body is of a hollow cylindrical structure, and an inclined groove is formed in the axial center of the glass tube base body; the single piezoelectric ceramic piece is fixed on the outer side of the glass tube base body. Through a hollow rod type stator structure composed of a single piezoelectric ceramic piece and a glass tube base body with a 10-degree inclined groove, mode conversion from longitudinal vibration to longitudinal-torsional coupling vibration is achieved, an elliptical motion track is formed at the position of a miniature magnetic ring at the front end of the stator, 360-degree optical scanning is achieved through friction driving of a rotor, and the mechanical property of the motor is improved. Compared with a traditional far-end miniature probe with the diameter usually larger than 1.5 mm, the whole outer diameter of the probe is reduced to 0.4 mm, and smooth navigation and passing in tortuous and narrow brain middle artery (the diameter is usually smaller than 0.5 mm) are easier.

The invention discloses a magnetostrictive ultrasonic longitudinal-bending dual-mode cutting device and an operation method, the longitudinal-bending dual-mode cutting device is provided with a longitudinal-bending dual-mode main body, the front end of the longitudinal-bending dual-mode main body is provided with a stepped-shaft-shaped tool apron, chamfers or fillets are arranged between steps, the front end of the stepped-shaft-shaped tool apron is provided with a tool mounting part, and the front end of the stepped-shaft-shaped tool apron is provided with a tool holder; a threaded connection hole is formed in the cutter mounting head part, and the cutter is matched with the threaded connection hole and is fixed on the cutter mounting head part through a cutter fixing bolt. Free switching between the longitudinal vibration mode and the bending vibration mode of the machining device can be achieved by adjusting the direct current of the bias coil at the bias coil rack according to the working condition and the machining requirement of a workpiece, and the precision of the machined surface and the flexibility of a machining tool are improved.

The utility model relates to a novel ultrasonic elliptical vibration coupling mechanical rubber tapping system which is suitable for high-precision low-damage harvesting operation of natural rubber trees. Through cooperative work of the ultrasonic power source, the ultrasonic transducer, the ultrasonic amplitude-change pole, the tool holder and the rubber tapping system base, controllable elliptical vibration of the rubber tapping knife is achieved, and the defects in the prior art are effectively overcome. The system adopts a full-bridge structure high-frequency inverter circuit with an auxiliary network, so that the switching loss is reduced, and the power conversion efficiency is improved; the bimodal composite vibration type ultrasonic transducer generates elliptical vibration through the transverse vibration set and the longitudinal vibration set, and the cutting effect is improved. The exponential ultrasonic amplitude-change pole amplifies a vibration signal, and the cutting strength and efficiency are enhanced; the rubber tapping system base ensures stable connection between the system and the robot; and the cutter clamping seat adopts a clamping type positioning groove, so that the blade is convenient to replace. The rubber tapping device has the advantages of being efficient, accurate and low in abrasion, and the quality and efficiency of rubber tapping operation are remarkably improved.

In certain embodiments, a surgical handpiece system includes a phacoemulsification tip, a fluid management system, an ultrasound drive system, and a controller. The phacoemulsification tip is attached to the shaft. The fluid management system is configured to manage inflow and outflow of fluid from an ocular surgical site. The ultrasonic drive system is configured to generate torsional and longitudinal vibrations in the phacoemulsification tip. The controller is configured to analyze a voltage and a current applied to the ultrasonic drive system using fast Fourier transform (FFT), and tune an application frequency of the torsional vibration and the longitudinal vibration according to at least one resonant frequency.

This invention relates to the field of material surface performance testing, and discloses a multifunctional ultrasonic longitudinal vibration friction and wear testing machine with adjustable frequency and amplitude. The machine includes a housing, an oil reservoir, a quick-change tool head, a clamp, a drive system, a tunable ultrasonic longitudinal vibration system, and an oil supply system. The oil reservoir is installed inside the housing. The clamp is located inside the oil reservoir, below the quick-change tool head. The drive system is installed inside the housing and is connected to both the quick-change tool head and the clamp, driving the quick-change tool head to contact the sample on the clamp, and driving the clamp to rotate or reciprocate relative to the quick-change tool head. The tunable ultrasonic longitudinal vibration system is connected to the quick-change tool head, driving the quick-change tool head to vibrate and adjusting its vibration frequency and amplitude. The oil supply system is located on the oil reservoir and supplies oil to the contact area between the sample and the quick-change tool head, adjusting the oil supply volume and temperature. This invention solves the problem of improving the diversity and flexibility of testing.

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

The invention provides a bridge longitudinal damping device, and belongs to the technical field of bridge damping. Comprising a connecting assembly, the connecting assembly comprises first connecting plates arranged on the outer side of a damping plate, rotating blocks are rotationally arranged on the inner sides of the first connecting plates, connecting damping rods are arranged on the other sides, away from the first connecting plates, of the rotating blocks, and the tops and the bottoms of the connecting damping rods are sleeved with fixing lantern rings; a damping damper is rotatably arranged on one side of the fixing lantern ring, adjusting blocks are arranged on the two sides of the damping damper, and the damping damper is rotatably connected with the first guide rod through the adjusting blocks. In the connecting assembly of the bridge longitudinal damping device, the first connecting plate is arranged on the outer side of the damping plate to provide a mounting base body for the assembly; the rotating block rotationally arranged on the inner side is used for flexibly transmitting longitudinal vibration of the bridge, the connecting damping rod on the other side of the rotating block can primarily attenuate vibration energy, the fixing lantern rings arranged on the top and the bottom of the connecting damping rod in a sleeving mode provide hinge supporting points for shock absorption damping, and damage to the bridge structure is effectively reduced.

The invention relates to a longitudinal-torsion combined robust ultrasonic cutter handle for a large-diameter cutter and a design method of the longitudinal-torsion combined robust ultrasonic cutter handle. The ultrasonic scalpel comprises a scalpel handle and a transducer arranged in the scalpel handle. The transducer comprises an amplitude-change pole, a piezoelectric ceramic piece, a positive electrode, a negative electrode and a rear cover; the piezoelectric ceramic pieces are arranged between the rear end of the amplitude-change pole and the rear cover in the axial direction in a stacked mode. The negative electrodes and the positive electrodes are clamped between every two adjacent piezoelectric ceramic pieces in a staggered mode, between the rear end of the amplitude-change pole and the piezoelectric ceramic pieces and between the rear cover and the piezoelectric ceramic pieces. The rear cover is used for providing inertial mass; the amplitude-change pole is of a double-taper structure which contracts firstly and then releases, and a transition section is formed between the two tapers. A spiral groove is formed in the axial direction of the amplitude-change pole; the knife handle is provided with a contact conductive contact, the contact conductive contact and the knife handle are arranged in an electric insulation mode, and the contact conductive contact is electrically connected with the positive electrode and the negative electrode through wires. The tool can have the vibration modes of longitudinal vibration and torsional vibration at the same time, and the machining effect and efficiency are improved.

The utility model provides a kind of damping system and car seat, it is related to car seat technical field, for the vibration after attenuation of suspension system is attenuated again, further reduce the jolt of passenger, improve the ride comfort of passenger.The damping system includes at least one damping mechanism, and, any damping mechanism includes two damping components and first damping element.It needs to be explained, linkage mechanism is formed between first damping element and two damping components, common attenuation is acted on longitudinal vibration and transverse vibration formed by outside impact transmission.Specifically, any damping component is used to connect between seat frame component and vehicle body, and is used to attenuate longitudinal vibration, to reduce the jolt of passenger when riding.And first damping element is connected between two damping components, and is used to attenuate transverse vibration, to reduce the swing feeling of passenger when riding.

A first amplitude-change pole body and a second amplitude-change pole body are coaxially arranged, the projection of the second amplitude-change pole body along the central axis of the second amplitude-change pole body is located in the first amplitude-change pole body, and a containing cavity is formed in the end, away from the first amplitude-change pole body, of the second amplitude-change pole body. The positioning rod body is arranged at the end, away from the second amplitude-change rod body, of the first amplitude-change rod body and is coaxial with the first amplitude-change rod body, the flange structure is arranged on the side wall of the first amplitude-change rod body, and a gap is formed between the flange structure and the side wall of the second amplitude-change rod body. The adjusting block extends into the gap, at least part of the adjusting block is connected to the end, close to the second amplitude-change pole body, of the first amplitude-change pole body, and the adjusting block abuts against part of the side wall of the second amplitude-change pole body. The adjusting block can enable vibration to act on the second amplitude-change pole body to enable the second amplitude-change pole body to achieve polarization, the bending vibration effect is achieved through the combined action of longitudinal vibration and polarization, and motion of a cutter is better facilitated.

The utility model discloses a cement pole production is with concrete vibration compaction device relates to the forming product technical field of building material, including the vibration table, the top of vibration table is provided with a plurality of mould pipes, the below of vibration table is provided with the mounting seat, and the top of mounting seat is installed with first servo motor, and the output of first servo motor is connected with the pivot that passes through vibration table vertically, and the lateral surface of pivot at vibration table top one end is fixed with first eccentric cam, and the lateral side of mould pipe is provided with the connecting plate of fixed in vibration table top, and the outer wall plane strip of mould pipe, and the outer wall of plane strip is fixed with slide rod, and slide rod passes through adjacent connecting plate and is connected with connecting plate slidingly, and the compression spring is fixed between adjacent plane strip and connecting plate, and the compression spring is covered in the outside of slide rod, the below of vibration table still is provided with the longitudinal vibration structure of drive vibration table up and down vibration, adopts the mode of horizontal and longitudinal composite vibration, forms the vibration effect of multidirectional.

A three-dimensional ultrasonic elliptical vibration cutting device has a two-dimensional ultrasonic vibration transducer, an asymmetric ultrasonic horn, and a cutter. The cutter is installed at the output end of the asymmetric ultrasonic horn, the two-dimensional ultrasonic vibration transducer is used for outputting ultrasonic longitudinal-flexural complex vibration, the asymmetric ultrasonic horn is used for converting and decomposing longitudinal vibration output by the two-dimensional ultrasonic vibration transducer into second-phase flexural vibration and longitudinal vibration, and outputting a three-dimensional ultrasonic elliptical vibration trajectory on the cutter in combination with first-phase flexural vibration output by the two-dimensional ultrasonic vibration transducer. A three-dimensional ultrasonic elliptical vibration trajectory is output in a double-excitation mode. The output three-dimensional ultrasonic elliptical vibration trajectory is adjusted according to different cutting applications and machining requirements.

An ultrasonic transducer is described having a resonant horn and piezoelectric elements arranged to impart vibration to the horn. The piezoelectric elements are wedge-shaped with respect to a central axis of the horn and arranged on the horn to impart to a distal end of the horn in a longitudinal direction vibration with respect to the central axis and / or a transverse direction vibration with respect to the central axis. Configurations are also described having additional wedge-shaped piezoelectric elements that may impart vibration in a second transverse direction with respect to the central axis. A phacoemulsification probe is described including wedge-shaped piezoelectric elements. Methods for energizing the piezoelectric elements are also described.

The invention relates to the technical field of power transmission lines, and discloses a power transmission line wind vibration suppression self-adaptive damping device which comprises a frame and a plurality of sets of connecting frames hinged to the frame, and each connecting frame comprises a connecting piece hinged to the frame and an openable annular piece installed on the connecting piece. Three rotatable rubber wheels are installed in the annular piece, the cable is fastened through contact between the three rubber wheels and the cable, and the three rubber wheels rotate along with rotation of the cable. According to the invention, the angle is adaptively adjusted along with the wind vibration motion of the cable, and the vibration energy of the cable under the wind action can be effectively buffered by matching with the three rubber wheels to stably clamp the cable. When the cable generates transverse or longitudinal vibration due to wind, the flexible rotation of the connecting piece can disperse vibration impact force, and vibration energy is prevented from being locally accumulated on the cable.

A compact vibratory burrowing probe, particularly beneficial in low gravity space exploration environments, uses lateral or stirring-like vibrations to fluidize a surrounding regolith, thereby decreasing the penetration resistance, and compensating for the light overhead weight to improve the burrowing action of the probe into the surface of the terrain of explored moons, planets, or asteroids. Included is a novel vibratory mechanism capable of imparting the novel lateral or stirring vibration, as well as a more conventionally oriented longitudinal vibration.

The utility model provides a vibration reduction and isolation granary structure, and belongs to the technical field of granary structures. Firstly, a silo, a ring beam and a supporting column are connected through an upper vibration isolation support and a lower vibration isolation support respectively, so that the granary has the longitudinal vibration resistance, and self-resetting side seats on the two sides of the adjacent lower vibration isolation support are connected through steel cables, so that transverse wave energy can be counteracted; secondly, a vibration reduction and isolation device is arranged on the ring beam between the supporting columns, so that the vibration reduction and isolation capacity is enhanced, and the efficacy period can be prolonged by replacing a vibration isolation lower support; besides, the connecting rod penetrates through a hole formed in the ring beam, and a limiting strip is arranged at the top of the vibration isolation upper support, so that the granary can be well kept balanced and stable, and the situation that the granary cylinder shifts from the gravity center to break off bolts or collapse is prevented; then, a connecting cylinder in the self-resetting side base is of a V-shaped structure and is connected with a supporting base on the supporting column through a steel cable, and a triangular stable structure can be formed; and finally, the angle of the connecting cylinder can be movably adjusted, so that the connecting cylinder can better adapt to stress generated by vibration and is convenient to mount.

The application discloses a kind of temperature sound velocity parameter measurement methods in ice based on rod longitudinal vibration mode inversion, belong to ice layer acoustic measurement technical field, including the following steps: S1, layout thin stick, and vibration signal is collected;S2, vibration signal is analyzed, and the resonance frequency set of thin stick longitudinal vibration is obtained;S3, construct non-uniform longitudinal vibration model, and according to the resonance frequency set of thin stick longitudinal vibration is inverted, and the thin stick Young's modulus distribution is obtained;S4, thin stick Young's modulus distribution is mapped as thin stick along the temperature distribution of axial direction, and thin stick along the temperature distribution of axial direction is regarded as the equivalent representation of ice layer along corresponding depth direction temperature distribution;S5, obtain sound velocity profile.The application excites and measures the longitudinal vibration response of thin stick in ice layer, utilizes the sensitive characteristics of thin stick longitudinal vibration mode to material parameter change under non-uniform thermal environment, realizes the inversion estimation of ice layer internal temperature distribution and sound velocity profile.

The invention belongs to the technical field of laser processing and manufacturing, and discloses a processing auxiliary device for laser processing and manufacturing and a working method of the processing auxiliary device. The machining auxiliary device for laser machining and manufacturing comprises an ultrasonic transducer, an ultrasonic amplitude-change pole and a condensing lens body. One end of the ultrasonic amplitude-change pole is fixedly connected with an ultrasonic transducer; a lens mounting part is arranged at the other end of the ultrasonic amplitude-change pole, a through hole is formed in the lens mounting part, a mounting groove is formed in the through hole, and a condensing lens body is fixedly arranged in the mounting groove; the ultrasonic amplitude-change pole is used for receiving ultrasonic vibration sound signals in a longitudinal vibration mode output by the ultrasonic transducer, and the ultrasonic vibration sound signals are subjected to amplitude amplification and longitudinal vibration conversion and then drive the condensing lens body to conduct three-dimensional composite vibration. According to the technical scheme disclosed by the invention, the existing problem of heating and abnormal sound is solved, and the breaking risk of the condensing lens is avoided; the amplitude on the condensing lens is effectively increased, and the processing quality and the processing efficiency of laser processing can be improved to a certain extent.

There is provided an ultrasonic composite vibration device or the like that is configured by connecting a plurality of vibration elements so that stability of the connection state is improved. A first vibration element 11 and an intermediate vibration element 10 are co-axially connected at one designated connection location which, in a mid-section of an ultrasonic composite vibration device 1, is included in a range within a phase angle of 0.05 π based on antinodes A (M1) of a standing wave M1 of the longitudinal vibration, and is included in a range within a phase angle of 0.22 π based on nodes N (M2) of a standing wave M2 of the torsional vibration. Similarly, in the mid-section of the ultrasonic composite vibration device 1, the intermediate vibration element 10 and the second vibration element 12 are co-axially connected by a mechanical connection mechanism at another designated connection location.