176results about How to "Adjustable vibration frequency" patented technology

The invention relates to a multi-parameter adjustable cable fretting fatigue device. Wherein, the current wire vibration test bench mainly aims at the macroscopical wire vibrating or weaving; while for research on wire breaking, it is hard to adjust multiple parameters for vibrating frequency and amplitude, loading, and angle. This invention comprises a vibration source device, a tension device, a fixing slot base, a vertical location device, an overhanging-line clamp, some wires, a vibration detector, and a stress-strain detector. This invention completes the test by means of relative motion between the cam on motor shaft and flow butt-joint wheel fixed under the overhanging-line.

The invention relates to a handheld type branch vibration and fruit harvesting device and belongs to the technical field of fruit harvesting. The handheld type branch vibration and fruit harvesting device comprises a driving mechanism, a transmission mechanism, a vibration mechanism, a vibration-reducing handheld mechanism, a manual clamping mechanism, a branch clamping head and a ratchet wheel locking mechanism. The driving mechanism, a transmission mechanism, a vibration mechanism, a vibration-reducing handheld mechanism and a manual clamping mechanism are connected in sequence. The manual clamping mechanism comprises a crank push rod mechanism which controls clamping or loosening motions of the branch clamping head through forward direction or reverse rotation and is driven by a clamping handle. The ratchet wheel locking mechanism has a locking gear for controlling single forward direction rotation of the clamping handle and an unlocking gear for controlling forward direction or reverse direction rotation of the clamping handle. The handheld type branch vibration and fruit harvesting device can quickly clamp fruit tree branches and adjust vibration amplitude and frequency to perform vibration harvesting of fruits, improve fruit harvesting efficiency, reduce cost and alleviate damage to the fruit tree branches. The vibration-reducing handheld mechanism is adopted to prevent vibration fatigue damage to operators.

The invention discloses a high-precision vibration simulation system based on multi-axis multi-degree of freedom. The high-precision vibration simulation system comprises a mounting base, a shunt-wound multi-degree-of-freedom motion platform and a mechanical changeover panel, wherein the bottom of the mounting base is connected with a mounting connection platform, and the side surface of the mounting base is connected with the shunt-wound multi-degree-of-freedom platform; the mechanical changeover panel is fixed on a mobile platform of the shunt-wound multi-degree-of-freedom platform. The high-precision vibration simulation system greatly simplifies the design process under the premise of improving the system performance, improves the system positioning accuracy, besides, shortens the work cycle, and lowers various costs, as well as unnecessary expenditures in case of repeated design, manufacture, installation, debugging and the like after the design does not meet the requirements.

Provided is a low-frequency vibration and electrolytic machining device for tool electrodes. The top surface of a workpiece is provided with through holes, above which the tool electrodes are arranged. The tool electrodes are arranged on an adjusting rack. A horizontal adjusting plate of a displacement table is arranged on a base. A shell of an electromagnetic coil is fixed onto a vertical adjusting plate of the displacement table. An iron column of an electromagnet is wounded by a coil. The coil, a multi-loop time relay and a stabilized voltage supply are connected end to end to form a driving loop. The upper end of a vibrating shaft is inserted into the hollow iron column. The lower end of the vibrating shaft orderly penetrates through a support table and a linear bearing and then is connected with the tool electrodes via a universal chuck. A solution tank is arranged in a fixing seat of a fixing device. The workpiece is erected into the solution tank. The through holes of the workpiece are communicated with the solution tank via an outlet arranged in a rubber ring. A clamp is arranged on the fixing seat. The clamp and the vibrating shaft are made by conductive material. The clamp, the vibrating shaft, the multi-loop time relay and a machining power supply are connected end to end in order to form an electrolytic loop.

The invention discloses a lucidity maintaining device. The lucidity maintaining device is a head-mounted device and consists of a sensing controller and a head-mounted carrier which is sleeved at the head, wherein the sensing controller and the head-mounted carrier are mechanically fixed and electrically connected into a whole; the sensing controller comprises a micro-electromechanical system (MEMS) gyroscope, a control module and a power supply module; the head-mounted carrier comprises a vibration module and a wearable carrier for bearing the vibration module; the MEMS gyroscope performs real-time data acquisition and data processing on triaxial angular velocity signals; the control module is used for calculating and identifying the class of the head action of a person and executing instruction operation corresponding to the head action; the vibration module is used for providing consciousness vibration stimulation to the person. The lucidity maintaining device can realize consciousness vibration stimulation conveniently and timely, can select vibration modes and adjust vibration strength and frequency, achieves an obvious and continuous stimulation effect, is favorable for maintaining excellent lucidity of the person, and has wide application occasions.

A piezoelectric energy collecting system comprises a piezoelectric cantilever beam, piezoelectric pieces, a first vibration frequency sensor, a micro capacitor, a second vibration frequency sensor, a single chip microcomputer, a motor drive chip, a micro motor, a coupler, a supporting frame, a ball nut, a ball screw rod, a screw cap, a connection rod, a mass block and a sliding channel. The piezoelectric cantilever beam is installed on a vibration structure body, the front face and the back face of the piezoelectric cantilever beam are covered with the piezoelectric pieces, the first vibration frequency sensor is installed on the vibration structure body and is respectively connected with the micro capacitor and the single chip microcomputer through wires, the micro capacitor, the second vibration frequency sensor, the single chip microcomputer, the motor drive chip and the micro motor are all arranged on the piezoelectric piece on the front face of the piezoelectric cantilever beam, the micro capacitor is connected with the second vibration frequency sensor through a wire, and the second vibration frequency sensor is connected with the single chip microcomputer through a wire. Vibration frequency of a piezoelectric vibrator is adjustable.

The invention discloses a horizontal unidirectional vibration table with adjustable amplitude and frequency, which relates to the technical field of vibration test equipment. The vibration table comprises a bracket, a vibration table board and a driving mechanism, wherein the vibration table board and a test piece fixed to the table board are driven by means of the driving mechanism to vibrate horizontally on the bracket in a reciprocating mode; the driving mechanism comprises a variable frequency motor capable of adjusting a rotating speed to control the vibration frequency, a reduction gearbox and an eccentric adjusting mechanism for controlling the amplitude; the eccentric adjusting mechanism comprises a Pi-shaped sliding groove fixed to the lower portion of the table board, a U-shapedsliding groove connected with an output shaft of the reduction gearbox and an eccentric shaft; the eccentric shaft comprises an eccentric shaft sliding block and an eccentric shaft pin arranged aboveone end of the eccentric shaft sliding block; the eccentric shaft sliding block can slide and be locked in the U-shaped sliding groove so as to adjust an eccentric distance of the eccentric shaft pin;the eccentric shaft pin is inserted into the Pi-shaped sliding groove; and the eccentric shaft pin does circular motion in the horizontal plane and drives the Pi-shaped sliding groove and the vibration table board to vibrate horizontally in a reciprocating mode in the rotating process of the eccentric shaft.

The invention relates to the field of dentognathic orthopedic techniques, and provides a sectional-type differential vibrating biteplate and a sectional-type differential dentognathic orthopedic device. Such a sectional-type differential vibrating biteplate comprises an anterior tooth vibrating unit, a left posterior tooth vibrating unit and a right posterior tooth vibrating unit, wherein the anterior tooth vibrating unit is corresponding to the position of an anterior tooth; the left posterior tooth vibrating unit is corresponding to the position of a left posterior tooth; the right posterior vibrating unit is corresponding to the position of a right posterior tooth; independent vibrating mechanisms are mounted in the anterior tooth vibrating unit, the left posterior tooth vibrating unit and the right posterior tooth vibrating unit respectively; elastic connecting units used for weakening vibration transmission are connected both between the anterior tooth vibrating unit and the left posterior tooth vibrating unit and between the anterior tooth vibrating unit and the right posterior tooth vibrating unit. The sectional-type differential dentognathic orthopedic device comprises the sectional-type differential vibrating biteplate and an extra-oral machine. The three vibrating units of the sectional-type differential biteplate can independently generate vibration; therefore, the directional vibration can be applied to a tooth; the movement of a local tooth is promoted; the personalized movement of the tooth at a specific segment is carried out.

The invention discloses a processing method of a silicon micro resonator, belongs to the field of sensors, and aims at solving the problems in an existing method for manufacturing a resonator. The method provided by the invention comprises the following steps: 1, performing thermal oxidation treatment on an N-type (111) silicon wafer (with the resistivity of 3Omega.cm-10Omega.cm) selected as a to-be-processed silicon wafer so as to obtain a thermal oxidation treatment type silicon wafer; 2, etching a resonance beam structure diagram on the upper surface of the thermal oxidation treatment type silicon wafer by adopting a photoetching technology; removing oxidation layers in areas at two sides of a resonance beam; meanwhile, forming two deep grooves symmetrically in the two sides of the resonance beam by utilizing a deep reaction ion etching technology; 3, covering passivation layers on side walls of the resonance beam; 4, etching passivation layers on the bottoms of the two deep grooves; 5, re-etching the bottoms of the two deep grooves again continuously by a certain depth; 6, corroding the silicon wafer by a TMAH (tetramethylammonium hydroxide) solution, and releasing the resonance beam; communicating the two deep grooves in two sides of the resonance beam to form a vibration chamber, and processing the silicon micro resonator.

Piezoelectric devices are disclosed that allow outside-in adjustment of vibration frequency produced by the devices. I.e., the vibration frequency can be increased or reduced. An exemplary piezoelectric device includes a tuning-fork type piezoelectric vibrating piece mounted inside a package. The vibrating piece has a base fabricated of a piezoelectric material, a pair of vibrating arms extending parallel from the base in a predetermined direction, and a frequency-adjustment unit situated on the distal ends of the vibrating arms. The package includes first metal films disposed on the inner main surface of the package at a location where a beam from an external laser can be irradiated. The frequency adjustment unit includes a transparent region that extends in a predetermined direction for allowing the laser beam, passing through the lid of the package, to be incident on second metal films by passing through the transparent regions. The laser beam also can be incident on first metal films without also being incident on the second metal films, by passing through the lid but not through the transparent regions.

The invention discloses terminal equipment. The terminal equipment includes a first motor, a second motor, a lens and a processing circuit. The first motor is connected with the lens and drives the lens to zoom. The processing circuit is connected with the first motor and the second motor, when the processing circuit determines that the vibration frequency of the second motor is the target frequency, the vibration frequency of the second motor is increased or decreased, and when the second motor vibrates at the target frequency, the first motor resonates. The invention further discloses a control method of the terminal device. According to the scheme, the problem of focusing failure caused by resonance of the first motor and the second motor in the current terminal equipment can be solved.

The invention discloses a small vibrating table for a precast block. The small vibrating table comprises a working table, wherein supporting legs are welded to the two sides of the bottom of the working table respectively, and a stabilizing rod is welded between the supporting legs; guide rods are connected to the two sides of the top of the working table through bolts respectively, and springs are arranged on the surfaces of the guide rods in a sleeving mode; the tops of the guide rods are connected to a vibrating table body through bolts, and the two ends of each spring are fixedly connectedto the surface of the working table and the surface of the vibrating table body respectively; and a motor is fixedly arranged on the front side of the working table, a power regulator is fixedly arranged at the bottom of the motor, the power regulator is fixedly connected to the top of the stabilizing rod, and the output end of the motor is connected with a first cam in a clamped mode. Accordingto the small vibrating table for the precast block, the motor, the power regulator, the first cam, a second cam, a fixing bolt and a control box are matched, so that the problem that the amplitude andthe frequency of vibration of an existing vibrating table cannot be adjusted, so a good vibrating effect cannot be achieved is solved.

The invention discloses a waste silk cleaning device for textile cloth processing, which includes a cleaning box, a first transmission roller connected between two first bearings, and a second transmission roller connected between two second bearings. The bottom of the piston plate is connected with a support spring, the middle part of the bottom of the movable rod is connected with a transmission rod, and the lower side of the transmission rod is inserted with a rotating rod, and the right side of the rotating rod is connected with a turntable. The end of the tube far away from the cleaning box is connected to the suction fan, and the middle part of the top of the cleaning box is provided with a port, the inside of the port is provided with a conduit, the bottom of the conduit is connected to a dust cover, and the left side of the adjustment plate A rack is connected, and the left side of the rack meshes with the transmission gear. The invention has the advantage of reducing the long time spent on removing waste silk from the textile cloth, and solves the problems that the waste silk removal on the textile cloth takes a long time and the poor removal effect of the waste silk will reduce the production quality of the textile cloth.

The invention discloses plastic vibration processing and sample molding integration test equipment and a method. The equipment comprises a hydraulic power system, a vibration power driving system, a test platform, a piston assembly, a central mould, a visualization device, a controlling system and the like. The equipment and the method combine vibration field quantity with mould sample molding, combine cutting, pressing, vibration and sample processing molding function into a whole, are different from rheological property research limited by polymer of a traditional rheometer, avoid form change of plastic mixture structures when materials in a test cavity are taken out, monitor a microstructure online directly or directly mold and obtain detecting samples. The plastic vibration processing and sample molding integration test equipment and the method can not only achieve the rheological property test of moving state and steady state of the polymer, but also be used for microstructure form research of a plurality of polymer systems under multi-element field quantity and influence rule research between processing performance and technological conditions. The plastic vibration processing and sample molding integration test equipment and the method can be widely applied to industries of material, chemistry, pharmacy, coating, food, building and the like.

The invention relates to a vibrating sieve, in particular to a flexible horizontal vibrating sieve. Balancing weights are arranged on an eccentric shaft, the eccentric mass change of the eccentric shaft is achieved, the vibrating form is flexible, and the amplitude is more flexible and changeable. The balancing weights with different masses can be selected to vibrate according to the type of ore,and thus the motion track can be switched between the straight line and the oval. Vibration exciters are arranged in different places on a sieve box, thus amplitude of the device at different positions can be adjusted slightly, and thus the device is applicable to different use occasions. The installing angle of the horizontal vibrating sieve is between -10 DEG C and +10 DEG C, the installing angle of the device is more flexible, and the suitable installing angle is selected according to the needed ore falling speed. The horizontal vibrating device is simple in structure, easy to assemble anddisassemble, convenient to debug and maintain, and capable of adapting to different working conditions.

The invention discloses a vibrating screen with a vibrating screen surface and static screen box and aims to provide a vibrating screen which is low in energy consumption and foundation vibrating force and can be made in large size easily. The vibrating screen comprises a machine frame, a screen surface, a vibrating device and a transmission mechanism, wherein the transmission mechanism comprises a transmission rod, vibrating rods, rotating shafts, rotating shaft seats and a vibrating arm, wherein the vibrating device is connected with the transmission rods; the transmission rod is hinged with the vibrating rod, the vibrating rod is sleeved on the ends of the rotating shafts; the rotating shafts are arranged in the rotating shaft seats; at least two rotating shaft seats are arranged on each rotating shaft; the vibrating arms are arranged on the rotating shafts; the rotating shaft seats and the vibrating device are arranged on the machine frame; and the screen surface is fastened on the vibrating arms by bolts. The vibrating screen can be widely used in energy resource, metallurgical, ceramic, building material, chemical industries and other industries and mainly used for material grading and dehydration.

The present invention discloses a pipeline resonance fatigue test bench. The pipeline resonance fatigue test bench comprises: a fixing plate; at least two supporting mechanisms movably arranged on thefixing plate; a displacement measuring device; a first cover plate, one side of which is fixedly connected with the pipeline to be tested; a bearing pedestal, one side of which is rotatably supportedon the other side of the first cover plate; a screw shaft which passes through the centers of both sides of the bearing pedestal along the axial direction of the pipeline to be tested, is rotatably connected with the bearing pedestal and is provided with an external thread on the outer surface; a guide shaft arranged parallel to the screw shaft; an eccentric block with an internal thread passingthrough the guide shaft and appropriately sleeved on the external thread; and a driving motor, a power output end of which is connected with the other side of the bearing pedestal. Through the centrifugal vibration of the eccentric block, the vibration frequency is close to the frequency of the welded part of the pipeline and resonance is generated, then an overall fatigue performance test for circumferential weld of the pipeline and pipe fitting is realized.

The invention provides a full-automatic vibrostand and relates to the technical field of vibration devices. A transmission device comprises a motor arranged on a first workbench, and the output end of the motor is connected with an eccentric wheel through a belt wheel assembly. A vibration device comprises a plurality of sets of elastic assemblies arranged between a second workbench and the top face of a box. A jacking assembly matched with the eccentric wheel to vibrate is arranged on the second workbench. A clamping device comprises two sets of workpiece bases arranged on the second workbench, and a corner air cylinder is arranged on one set of workpiece bases. An air-blowing assembly comprises a rodless air cylinder arranged on the second workbench, and a piston of the rodless air cylinder is connected with an air tap assembly. The full-automatic vibrostand further comprises a control device used for controlling the whole device to work. The full-automatic vibrostand achieves automatic control through cooperation work between the PLC system and an electric control system to adjust the vibration frequency, amplitude and the vibration time, and achieves final cleaning through air-blowing dust removing of the air-blowing device.

The invention provides a servo shake table and a control method thereof, and relates to the shake table field; the servo shake table adds an active server on an original main body frame and a control circuit; a second coil and a third coil of the active server are respectively located in a magnetic slot, and respectively wind on a movable coil rack; the second coil, a servo amplifier, a feedback resistor and the third coil are electrically connected in sequence; in usage, the amplification multiple of the private server amplifier can be adjusted so as to adjust the shake table whole shaking frequency, thus adjusting the frequency.

A vibrating apparatus is composed of a driver, a mainshaft driven by said driver, two eccentric wheel fixed to said mainshaft and driven by the mainshaft to rotate, and a vibrating platform on said eccentric wheels and driven by them.

The invention discloses a forming device and method for aluminum alloy structure refining. The device comprises a slope serpentine channel, a feeding funnel, a vibration platform and a matched mold. The angle of the slope serpentine channel is 30-50 degrees, and the length of a slope is 1000mm. The number of bends is 2-6. The angle of each bend is 100-150 degrees, and the vibrational frequency is100-200Hz. According to the forming technology, the serpentine slope and the vibration technology are combined, and the aluminum alloy structure can be effectively refined. Aluminum alloy melt is poured into the feeding funnel after refining and drossing. The melt is poured into the metal mold connected with the vibration casting platform after passing through the slope serpentine channel with a certain tilted angle, and then is cooled, consolidated and formed at a certain vibrational frequency.