598results about How to "High vibration frequency" patented technology

The invention discloses a micro-stress assembly flexible supporting method of a small-calibre micro-crystal glass material reflector. The method comprises the following steps of: firstly, carrying out lightweight processing on the back of the reflector, and processing a central column in the centre of the back; secondly, processing a flexible core shaft having an equilateral triangular structure, processing a hollow cylinder in the middle of the flexible core shaft, respectively processing a connecting part having a cuboid structure at three angles, processing three rectangular through holes between the cylinder and the connecting part, and processing a flexible discharging groove, a mounting hole and a pin hole in the connecting part; and finally, directly bonding and fixing an outer surface of the cylinder of the flexible core shaft with an inner surface of the central column at the back of the reflector. By the method, the positioning accuracy of the reflector is improved integrally, temperature adaptability is improved, a forced environment of the reflector during assembly is improved, and optical aberration such as field curvature and astigmatism generated by compression in the conventional mode is eliminated.

The present invention discloses a pneumatic sensor, having an air intake and an air outlet. The pneumatic sensor includes a first triboelectric component, a shell, a second triboelectric component and a third triboelectric component, wherein the shell has a hollow structure in a preset shape to form an airflow channel, and the airflow channel is communicated with the air intake and the air outlet, thus allowing the airflow to enter the airflow channel from the air intake and flow out from the air outlet; the first triboelectric component is arranged in the airflow channel, and the second and the third triboelectric components are arranged at positions capable of contacting with the first triboelectric component; and the second and the third triboelectric components include electric signal output terminals of the pneumatic sensor.

The present invention is one kind of single rod equal area double acting hydraulic cylinder capable of balancing weight. The hydraulic cylinder has cylinder with lower end connected to end cap, plunger mounted on the end cap, piston rod with one end jacketing the inner plunger and with piston mounted and the other end contacting with vibrated weight, oil cavity connected to the load port of three-position-four-way electric liquid servo / proportional valve, and empty cavity communicated with gas storage or energy accumulator and constant pressure controller. The present invention combines the hydraulic or pneumatic cylinder to balance weight inside the exciting hydraulic cylinder, has single rod equal area double acting structure cooperating with three-position-four-way electric liquid servo / proportional valve, and thus has high vibration frequency, simple structure and great rigidity.

The invention discloses a dynamic loading device for a high-speed motorized spindle. The device comprises a supporting part and a loading part, wherein the supporting part comprises a spindle base, an axial loading bracket, a radial loading base plate and a dynamometer base. The spindle base comprises a spindle base plate, an adjusting base plate and a clamping mechanism. The loading part comprises a radial loading mechanism, an axial loading mechanism, a torque loading mechanism, a loading rod and a bearing unit. The torque loading mechanism comprises a power dynamometer and a high-speed spring tube coupling. The adjusting base plate and the clamping mechanism are overlapped on the spindle base plate and are fixedly connected with each other; the power dynamometer is fixed on the dynamometer base and is connected with the right end of the loading rod through the high-speed spring tube coupling; the left end of the loading rod is connected with the right end of a detected high-speed motorized spindle which is arranged in the clamping mechanism. The bearing unit is sleeved on the loading rod; the radial loading mechanism is arranged on the radial loading base plate and is positioned just below the bearing unit; and one end of the axial loading mechanism is arranged on the axial loading bracket, and the other end of the axial loading mechanism is in contact connection with the bearing unit.

The invention provides an ultrasonic fingerprint identification region marking system with no need to carry out extra processing on a mobile phone panel. A fingerprint sensor can be hidden under the mobile phone panel without damaging the completeness of the panel. According to an existing scheme, in order to enable a user to find an ultrasonic fingerprint identification region, some extra processing is carried out on the mobile phone panel, for example, a sunken region is processed on the mobile phone panel, thereby enabling the user to identify. The invention provides the ultrasonic fingerprint identification region marking scheme with no need to carry out extra processing on the mobile phone panel. Through adoption of the scheme, a mobile phone display screen is an OLED screen; the whole screen stretches to the bottom of the mobile phone panel; through utilization of a micro power consumption feature when the OLED mobile phone screen displays black, the fingerprint identification region is marked by setting one part of the screen above a hidden fingerprint identification module to be constant bright; and the other part of the screen displays the black, thereby saving power; a user is guided through a mobile phone vibration unit, thereby informing the user of a fingerprint identification region range; and the completeness of the display panel does not need to be damaged for extra processing.

A multifunctional vibration extrusion die based on electro-hydraulic servo driving comprises a lower female die and an upper male die. The multifunctional vibration extrusion die further comprises an upper hydraulic cylinder and at least three lower hydraulic cylinders. The upper hydraulic cylinder and the lower hydraulic cylinders are respectively connected with a high-pressure hydraulic valve. The upper hydraulic cylinder comprises an upper cylinder body and an upper piston. The upper cylinder body is provided above an inner hole of a male die bush. The upper piston is fixedly connected with the male die. The male die is equipped below the inner hole of the male die bush slidably in a vertical direction. The male die bush is fixedly connected with a vibration tray. The lower hydraulic cylinders are symmetrically equipped at the bottom of the vibration tray. Each lower hydraulic cylinder comprises a lower cylinder body and a lower piston. Each lower cylinder body is fixedly connected with a lower die base. Each lower piston is fixedly connected with the vibration tray. The multifunctional vibration extrusion die based on electro-hydraulic servo driving according to the invention effectively reduces a vibration process in a forming process and reduces requirement to the extrusion equipment.

A piston-cylinder unit includes a cylinder with a piston rod guide and a piston rod with a piston axially movably mounted in the cylinder so that the piston rod runs through a hole in the piston rod guide. A movement determination device comprising a transmitter portion and a receiver portion determine the movement of the piston from the travel time of waves generated by the transmitter portion. The movement determination device is arranged inside the piston rod guide, and waves reflected by the piston-piston rod component group are analyzed to determine the movement of this component group.

A vibration dampening device for use on compound archery bows. A device may be associated with one or more bow limb, with each device disposing a vibration damping bumper in position to shorten the vibrating length of the bow string at brace, compared to the vibrating length of a bow string of a comparable bow lacking the device(s). Certain embodiments couple bowstring vibration at brace with one or more cable. Preferred embodiments include a limb anchor adapted to distribute string-induced loading onto a bow limb at both sides of a string cam.

The invention relates to a single-optical fiber scanning micro device as well as a production method and a control method thereof. The single-optical fiber scanning micro device is formed by wrapping an optical fiber with four pieces of piezoelectric ceramics, wherein a coating at the tail end of the optical fiber is removed, both ends of the four piezoelectric ceramics blocks are bonded around the optical fiber, a section of naked optical fiber is reserved, the four pieces of piezoelectric ceramics form a square cavity, the outer walls of the four pieces of piezoelectric ceramics are respectively provided with leads by tin soldering, the inner walls of the four pieces of piezoelectric ceramics on the cavity are conducted by conductive adhesives and are provided with one lead, the conducing wires of the two opposite pieces of ceramics in the horizontal direction are connected, and the leads of the two opposite pieces of ceramics in the vertical direction are connected. The single-optical fiber scanning micro device produced by the method has the advantages of short length, small size, good scanning repeatability, easy obtainment of raw materials, easy processing and low manufacturing cost, thereby having favorable application prospects on optical precise instruments as well as illumination devices, signal collection device and other devices in the field of clinical endoscopic operations.

The invention relates to an electromagnet-friction piezoelectric composite energy harvester and belongs to the technical fields of micro-electro-mechanical systems and micro energy. Permanent magnets are placed on the two sides in a shell of the harvester, a rotary shaft is connected with the shell through a bearing, a cantilever beam in an internal dent shape is fixedly connected to the rotary shaft, and the two ends of the cantilever beam are fixedly connected with hemispherical mass blocks respectively. Piezoelectric ceramics coated with a buffer layer are installed in the shell, a coil is wound around the cantilever beam, a second friction layer is attached to the exterior of the coil, and a first friction layer, a flexible piezoelectric material and an insulated filling layer are sequentially arranged on the corresponding positions between the second friction layer and the shell. Harvested energy is output through external lines of a first electrode layer and a second electrode layer, the first electrode layer is connected with the flexible piezoelectric material and the first friction layer, and the second electrode layer is located on the upper portion of the rotary shaft, and connected with the coil and the second friction layer through wires. The electromagnet-friction piezoelectric composite energy harvester has the advantages that vibrational energy is converted into electric energy, the output energy is amplified in a summed mode, and the energy conversion efficiency of the harvester is further improved.

The invention discloses a structure and method for reducing the equivalent unsprung weight of a wheel electrically-driven system of a single trailing arm type suspension, which is characterized in that an elastic rubber hinge is supported on a frame, one end of a swing arm of the single trailing arm type suspension is connected with the elastic rubber hinge, and the other end of the swing arm is connected with a reducer casing; the reducer casing is connected with a sleeve of a half axle; a motor is fixedly arranged on the reducer casing, the power output end of the motor is connected with a small gear, then the small gear is meshed with the large gear, and the large gear is connected with the sleeve of the half axle; and after the gear reducing is performed, the power is outputted to a rim by the half axle so as to drive wheels. The equivalent unsprung weight is reduced by reducing the distance between the mass centre of non-concentric parts of a wheel and a central swing axis of the single trailing arm type suspension. The structure and method disclosed by the invention have the advantages of increasing the vibration frequencies of wheels, reducing the resonance, reducing the impact and vibration from road surfaces, and improving the running smoothness of vehicles.

The invention discloses a high frequency ultrasound elliptic vibration cutting device which comprises an ultrasound vibration unit and a casing unit. The ultrasound vibration unit is arranged in the casing unit. The casing unit comprises a base, A cover plate, B cover plate and an upper cover plate. The ultrasound vibration unit comprises an amplitude transformer, a vibrating body, A excitation source, B excitation source and C excitation source. The amplitude transformer is installed on the vibrating body. The end part of the amplitude transformer is provided with a cutting tool. The A excitation source and the B excitation source are arranged in parallel way and are adhered on the lateral side of the vibrating body. The C excitation source is installed on the lower part of the vibrating body. The A excitation source and the B excitation source form the driving power in horizontal direction. The C excitation source forms the driving power in vertical direction. The phase separation between two mutually vertical high frequency vibrations is applied for compounding an elliptic vibration at the point of the cutting tool. Thus, the processing surface roughness is lowered effectively. The cutting device works at the high vibration frequency of 100 kHz-200 kHz, so that the vibration chipping critical speed of the cutting tool is improved, and the processing efficiency is improved obviously. The amplitude transformer is adopted to be inserted in the vibration body, so that the installation is easy, and the practicality of the ultrasound elliptic vibration cutting can be promoted.

The invention relates to an electric motor for an electrical small-scale unit. Said electric motor comprises at least one oscillatory motor component (1, 2), a magnet arrangement (6) comprising at least one permanent magnet (5), and a coil (9) for producing a magnetic field that generates a force for stimulating a linear oscillatory movement during interaction with the magnetic arrangement (6). The inventive electric motor is characterised in that a torque for stimulating a rotary oscillatory movement is also generated during the interaction of the magnetic field produced by the coil (9) and the magnet arrangement (6).

The invention provides eccentric swing type planetary gear device, deformation of bridge sections in an externally toothed gear and of outer teeth is suppressed, and this extends the life of tooth surfaces of external teeth (19), improves vibration characteristics, and drastically increases output torque while preventing a planetary gear device (11) from becoming large in size. To achieve the above, a ratio obtained by dividing the diameter (D) of pins constructing internal teeth (14) by the pitch (P) of the internal teeth (14) is made smaller to an extent where the tooth tops (19a) of the external teeth (19) are radially outside the inner periphery (15a) of an internally toothed gear (15), or alternatively, a meeting point (C) where the lines (S) of action of reaction forces (K) as drive force components meet is moved more radially outward than a conventional position so as to be positioned between a pin circle (P) passing the centers of all the internal teeth (pins) (14) and an outer end passing circle (G) passing radially outer ends of through-holes (22), or further alternatively, the amount (H) of eccentricity of an externally toothed gear (18) relative to an internally toothed gear is set not less than 0.5 times the radius (R) of the internal teeth (pins)(14).

A percussion apparatus and method of using the percussion apparatus. The apparatus may be used for delivering an impact to a tubular string. The apparatus comprises a cylindrical member having an internal bore containing an anvil and a first guide profile. The apparatus further includes a rotor disposed within the internal bore, and wherein the rotor member comprises a body having an outer circumference with a second guide profile thereon, and wherein the rotor contains a radial hammer face. In a first position, the second external guide profile of the rotor will engage with the first guide profile of the cylindrical member so that the radial hammer face can contact the anvil. In a second position, the second guide profile of the rotor will engage with the first guide profile of the cylindrical member so that the radial hammer face is separated from the anvil shoulder. Multiple rotors and multiple stators may be employed. The rotor may be operatively associated with a stator that directs flow into the rotor. The rotor may be comprised of a plurality of inclined blades. The percussion apparatus may be incorporated into a tubular string and used for multiple purposes within a well bore. For instance, a method of cementing a well with the percussion apparatus is disclosed.

A steering column for a vehicle having a high natural frequency including a tilt housing assembly having a fixed assembly and a tilt assembly, and a floating locking mechanism for controlling a position of the tilt assembly relative to said fixed assembly, and a telescoping housing assembly receiving a portion of the tilt housing assembly therein such that the tilt housing assembly is adapted to translate relative to said telescoping housing assembly substantially simultaneously with adjustment of the tilt assembly.

A suspension system for a vehicle, including: a stabilizer apparatus configured to change a stabilizer force by an operation of an actuator; a pair of absorbers of a hydraulic type each configured to change a damping coefficient thereof: a control device which includes (a) a stabilizer-force control portion configured to control the stabilizer force in accordance with roll moment acting on a body of the vehicle and (b) a damping-coefficient control portion configured to control the damping coefficient of each of the absorbers, wherein the damping-coefficient control portion is configured to execute a damping-coefficient reduction control for reducing the damping coefficient of each of the absorbers when a prescribed condition is satisfied and wherein the stabilizer-force control portion is configured to increase the stabilizer force in an instance where the damping-coefficient reduction control is under execution, as compared with an instance where the damping-coefficient reduction control is not under execution.

The invention provides a TIG (tungsten inert gas) welding method for auxiliary mechanical vibration droplet transfer and a TIG welding device for the same. The TIG welding device comprises a TIG power supply, a wire feeder, a guide tube, an auxiliary mechanical vibration device, a wire feeding nozzle and a welding wire, wherein the wire feeder is connected with the guide tube, the guide tube is connected with the wire feeding nozzle, and the auxiliary mechanical vibration device is fixed to a frame. A vibration rod is driven to vertically vibrate in a reciprocating manner by an internal body driving motor and a transmission device, and a buffer spring is sleeved between the vibration rod and a contact. The TIG welding method includes the steps: igniting an arc heating workpiece, forming a molten bath after arc is stable, and then starting the wire feeder to automatically feed in the welding wire; and starting the auxiliary mechanical vibration device, leading the vibration rod, the contact and the welding wire to mechanically vibrate, and performing welding under the action of auxiliary mechanical vibration. The TIG welding device is simple, convenient in operation and high in applicability, and compared with digital control equipment, the TIG welding device greatly reduces cost and is convenient for industrial popularization.

The invention discloses a small oscillating grain hulling machine, which comprises a frame, an oscillating mechanism, a screening mechanism and an air outlet mechanism. The air outlet component and the damper component drive the vibration component to run through the driving component. After the vibration component pushes the screening net in the screening component to a high place, the screening net drops rapidly by gravity, throws the grain on the screening net into the air, and is removed by the wind component. Light impurities such as chaff in the grain, and then the grain is returned to the screening net, and the granular impurities in the grain are screened and removed by the screening net. Repeat this process to completely remove the chaff impurities and granular impurities in the grain, and improve the screening efficiency.

The invention provides an alarming method and an alarming system of a mobile device. The alarming method is characterized in that a first mobile device can be used to transmit device loss information to a server; the server can be used to search a second mobile device affiliated to the first mobile device according to the device identification information of the first mobile device, and the first mobile device and the second mobile device can be notified, and respectively enter the stolen modes; the first mobile device and the second mobile device respectively enter the stolen modes, and the device positioning functions can be respectively started, and the current position information can be transmitted to the server according to the preset frequency; the server can be used to calculate the distance between the first mobile device and the second mobile device according to the received current position information; when the distance is smaller than a first alarming distance, the server can be used to transmit a first alarming notice to the first mobile device, and the first mobile device can vibrate according to the first alarming notice; when the distance is smaller than a second alarming distance, the server can be used to transmit a second alarming notice to the second mobile device, and the second mobile device can be used to send alarming sounds according to the second alarming notice.

A compact resonator has a wide bandwidth and a small variation of the specific vibration frequency. The resonator is a thin film tuning-fork type inflection resonator in which a thin film made of a piezoelectric material is formed on a substrate on which a lower electrode is formed, and an upper electrode is formed on the piezoelectric thin film.

The invention discloses a structure for reducing the equivalent unsprung mass of a single cross arm suspension wheel-side electric driving system; an elastic rubber is supported on a rack in a hinging way; one end of an oscillating arm of a single cross arm suspension is connected with the elastic rubber in a hinging way; the other end of the oscillating arm of the single cross arm suspension is connected with an electric machine which is fixedly arranged on a speed reducing case; the speed reducing case is connected with a half shaft sleeve pipe; a power output end of the electric machine isconnected with a pinion gear which is meshed with a main gear; the main gear is connected with the half shaft sleeve pipe; and after the electric machine is decelerated by the gears, the power is output to rims so as to drive wheels. The distance from the mass center of parts which are not concentric with the wheels to the oscillation central axis of the single cross arm suspension is reduced, namely, the equivalent unsprung mass is reduced. The structure has the advantages of reducing the equivalent unsprung mass of the wheel-side driving system so as to increase vibration frequency of the wheels, reduce resonance vibration and impact and vibration from road surfaces and improve smoothness of automobile driving.

The present invention is electromagnetic forming apparatus and process of artificial stone. The electromagnetic forming apparatus includes 2-12 electromagnets, one middle iron core driven holddown unit, and one energy storing and releasing spring unit to make the electromagnets generate 100-300 Hz vibration and pressing force under the control of monoway pulse current. The process includes crushing materials including stone containing rich Se, Zn, Sr, Mo and other trace elements, polyester resin, marble and quartz stone; mixing; molding and vibration forming to produce artificial stone article and thin plate with health care function. The present invention has low apparatus cost and high product market value.

The invention discloses an umbrella parallel elliptic vibration auxiliary cutting device and an elliptical track generation method, and belongs to the field of the elliptic vibration auxiliary cutting process. A design of a three flexible hinge branch parallel umbrella configuration structure is employed, and the umbrella parallel elliptic vibration auxiliary cutting device is composed of an umbrella parallel flexible hinge structure, folded plates, a support plate, a cushion block, cutter pre-tightening screws, five inner hexangular fastening screws, piezoelectric ceramics, electrode slices, threaded rods, frequency modulation nuts, positioning nuts and fastening nuts. The umbrella parallel flexible hinge structure is formed by three branches which are uniformly distributed on the conical surface and meet at 120 degrees, and a cutter mounting table, displacement is input on the three branches at the same time, by means of the transmission and amplification effect of the umbrella parallel flexible hinge structure, an elliptical track is formed on the tool nose finally. The umbrella-parallel-structure three-dimensional ultrasonic elliptic vibration cutting device is advantaged in that the device is simple in structure and high in resonant frequency and can generate the three-dimensional elliptic motion track easily, and can be directly integrated with a numerical control machine tool conveniently to carry out auxiliary precision processing.

The invention discloses an integrated piezoelectric ultrasound and electromagnetic combination drive motor, mainly comprising a torsional vibration piezoelectric chip, a longitudinal vibration piezoelectric chip, a piezoelectric drive stator, a sleeve, an electromagnetic drive stator, a multiplex rotor, a pre-tightening spring, a fastening bolt, abrasion-proof material and an output shaft. The longitudinal vibration piezoelectric chip, the torsional vibration piezoelectric chip and the piezoelectric drive stator are sequentially installed on a circular thin-wall sleeve and connected by the abrasion-proof material and the multiplex rotor which is installed on the output shaft and offers pre-tightening force to compress the abrasion-proof material as well as the piezoelectric drive stator by the fastening bolt and the pre-tightening spring. The motor, on the structural basis of the traditional brushless dc torque motor, is embedded with a longitudinal and torsional combined piezoelectric drive, integrates the advantages of two drives almost without expanding the volume, and is characterized by both the high thrust, high reliability and long service life of electromagnetic drive and the high dynamic response (millisecond level), high control precision and passive self-locking of piezoelectric ultrasound drive.

A shock absorber includes at least one of an expansion-side sensitive unit and a contraction-side sensitive unit. The expansion-side sensitive unit has an expansion-side actuating chamber that communicates with an expansion-side chamber and a contraction-side chamber, and an expansion-side free piston that partitions the expansion-side actuating chamber into a first expansion-side pressure chamber and a second expansion-side pressure chamber. The contraction-side sensitive unit has a contraction-side actuating chamber that communicates with a contraction-side chamber and a reservoir, and a contraction-side free piston that partitions the contraction-side actuating chamber into a first contraction-side pressure chamber and a second contraction-side pressure chamber.

The invention discloses an MEMS galvanometer-based micro laser three-dimensional imaging radar and an imaging method. The MEMS galvanometer-based micro laser three-dimensional imaging radar comprisesa two-dimensional MEMS galvanometer, a laser, a laser detector, a driving and control system and an imaging display system; a laser pulse emitted by the laser is reflected by the two-dimensional MEMSgalvanometer, and the reflected laser pulse is refracted to a certain scanning point in a target area; the angle of the MEMS galvanometer is extracted in real time, and the coordinates of the scanningpoint in the target area which is irradiated by the refracted light of the MEMS galvanometer at the angle are obtained; the coordinates of corresponding scanning points in the target area of a plurality of laser pulses are obtained, so that the target area can be divided into a series of dot matrixes; the laser detector receives light which is formed after the laser pulses are diffusely reflectedby the target, so that the laser detector can measure target distance information; the driving and control system is used for driving and controlling the two-dimensional MEMS galvanometer, the laserand the laser detector to work synchronously and sending the feedback information of the two-dimensional MEMS galvanometer, the laser and the laser detector to the imaging display system; and the imaging display system generates the three-dimensional image of the target area according to the dot matrixes and the target distance information. The MEMS galvanometer-based micro laser three-dimensionalimaging radar and the imaging method have the advantages of large scanning field angle, high scanning frequency and simple structure.

The invention provides a vibration-absorbing apparatus for a motor stator. The vibration-absorbing apparatus comprises a supporting apparatus that is fixedly connected with a motor stator bracket, a vibration-absorbing frequency adjusting apparatus that is used for adjusting the inherent frequency of the vibration-absorbing apparatus according to the vibration frequency of the motor stator, and a guide apparatus that is used for guiding the vibration-absorbing frequency adjusting apparatus to vibrate in a direction opposite to the vibration direction of the motor stator; the vibration-absorbing frequency adjusting apparatus comprises a quality adjusting apparatus and an elasticity adjusting apparatus; the quality adjusting apparatus adjusts the inherent frequency of the vibration-absorbing apparatus so as to enable the frequency to be matched with the vibration frequency of the motor stator; and the elasticity adjusting apparatus controls the quality adjusting apparatus to vibrate before and after a balanced position. According to the vibration-absorbing apparatus for the motor stator, the dynamic vibration-absorbing apparatus is designed and mounted in different positions of the motor stator to suppress the vibration of the motor and the whole machine so as to reduce operating faults of the motor caused by vibration and to improve the operating reliability of the unit; and the invention also provides the motor stator and the motor provided with the vibration-absorbing apparatus.