95results about How to "Ensure vibration" patented technology

The invention discloses a pedal type continuous vibration piezoelectric generating device. The device mainly comprises a pedal which is mounted at the position of an opening in the center of an upper cover of a box body through a spring mechanism, and the pedal drives N groups of ratchet mechanisms to link a vibration piezoelectric generator through a gear mechanism, wherein N is a natural numberexcept zero. After the pedal is stepped, acting energy is transferred to a flywheel through the gear mechanism and the ratchet mechanisms, and a pick tray is driven by the flywheel which continuouslyrotates in one direction to move a metal sheet of a cantilever beam and ensure the continuous vibration of the cantilever beam. The invention can bear repeated stepping, converts the intermittent stepping power of a stream of people into the continuous vibration of the cantilever beam, and the energized piezoelectric sheet can accordingly generate continuous electric power output so as to finallyreach the aim of effectively accumulating the electric power.

The invention provides a device and a method for detecting high-temperature vibration fatigue characteristics of an aero-engine blade. A vibration loading system is used to apply a vibration load to an aero-engine blade, and the aero-engine blade is heated and controlled by an electric induction heating system; a three-dimensional digital image correlation method is utilized to detect and analyzethe vibration fatigue characteristics of the aero-engine blade under a high temperature vibration load. The invention utilizes the three-dimensional digital image correlation method of non-contact optical full-field deformation measurement, and can adapt to measurement under various scales and various conditions; the accuracy of the detection result is ensured; vibration fatigue monitoring of theaero-engine blade can be achieved at different temperatures and different frequencies; and the comprehensiveness of the experimental result can be ensured.

The invention relates to a method for testing polymer composite material rheological characteristic and a device thereof. The invention can measure the rheological actions of polymer composite material during an extrusion molding process, a capillary extrusion process and an injection molding process under the function of physical field enhancement and also can measure the rheological action of the polymer composite material when processing condition and parameter are changed according to a specific program. The invention uses a servo motor, a ball screw, an excitation system and a digital intelligent servo system to control the rheological testing process of the polymer composite material exactly, and the invention can measure the rheological characteristic of high polymer complex liquid continuously and fast under different processing conditions during the process of a single experiment. The invention can quench fused mass sharply during the testing process and then samples and studies the rheological characteristic of polymer fused mass intuitively. The invention has the high accuracy and stability of measurement data and the wide application range of material and is fit for macromolecular material, a macromolecule blending system, a macromolecule filling system, other similar macromolecular liquid systems, etc.

A fluid-filled vibration damping bushing including an inner tubular metal member and an outer peripheral sleeve elastically connected via a base rubber interposed therebetween with first and second fluid chambers formed therein. A stopper rubber constituted as a separate element from the base rubber, disposed at a circumferential location corresponding at a minimum to either the first or second fluid chamber, for restricting relative displacement of the inner tubular metal member and outer tubular metal member in an axis-perpendicular direction. The stopper rubber is formed separately from an orifice member and bonded to one axial end portion of the outer tubular metal member at a location outside the first and second fluid chambers so as to face toward the inner tubular member. The outer tubular metal member with the stopper rubber attached thereto is inserted onto the outer peripheral sleeve from the other axial end thereof.

The invention discloses an ultralow-temperature and ultralow-vibration friction testing device, which comprises a helium liquefying mechanism, a friction mechanism and a storage tank, wherein the helium liquefying mechanism comprises a first vacuum hood and a first cold shield arranged in the first vacuum hood; a refrigerator penetrates through the first vacuum hood; a first-level heat exchanger and a second-level heat exchanger connected with a liquid conveying pipe are arranged on the refrigerator; the first-level heat exchanger and the second-level heat exchanger are positioned in the firstcold shield; the friction mechanism comprises a second vacuum hood, a second cold shield and an insulating bracket; the second cold shield and the insulating bracket are arranged in the second vacuumhood; the second vacuum hood is connected below the first vacuum hood; a liquid helium cavity is formed in the second cold shield; an exit of the liquid conveying pipe is formed in the liquid heliumcavity; an upper sample support is arranged on the outer bottom wall of the second cold shield; a movable displacement platform is arranged on the insulating bracket; a lower sample support is arranged on the displacement platform; the upper sample support and the lower sample support face each other up and down; the storage tank is connected with the first-level heat exchanger through a gas supplementing pipe and connected with the liquid helium cavity through a gas return pipe. According to the invention, a friction test of a sample can be realized in an environment with ultrahigh vacuum degree and ultralow temperature.

A window regulator which attenuates vibrations of a wire, which are generated when the door is closed while a window glass is constrained at the top end of the window, to suppress the generation of an abnormal noise. The window regulator includes a carrier plate coupled to a vehicle window glass, a driving unit which lifts and lowers the carrier plate and is disposed below a lower limit of lifting and lowering of the carrier plate, a lifting wire having one end coupled to the carrier plate and another end coupled to the driving unit via a direction-changing member, and a lowering wire having ends coupled to the carrier plate and the driving unit, respectively. An attenuation member is provided on the lifting wire interposed between the direction-changing member and the driving unit and makes contact with the lifting wire to attenuate vibrations when the lifting wire vibrates.

A lens drive device (101) capable of ensuring that the vibration in the optical axis direction converges in a short period of time even when a strong impact is applied due to, for example, a drop is provided with a cylindrical lens holding member (2) that can hold a lens body; a force applying member (3) that supports the lens holding member so as to be movable in the optical axis direction; a fixing side member (R4) that fixes a part of the force applying member; a drive mechanism (M5) that moves the lens holding member in the optical axis direction. The force applying member has an upper leaf spring (3A) fixed to an upper portion of the lens holding member; the upper leaf spring having a first portion (13) fixed to the lens holding member, a second portion (23) fixed to the fixing side member, an elastic arm portion (53a) provided between the first portion and the second portion, and an extending portion (63) extending from the first portion; a damping port (GE) is arranged to striding over the extending portion and the fixing side member.

The invention provides a debris flow prevention and treatment system. The debris flow prevention and treatment system can solve the problem that after water and stone of the debris flow are separated,stone blocks block a cover plate with holes and guarantee the debris flow water and stone separation system can durably and effectively play the role. The debris flow prevention and treatment systemcomprise a drainage system and a vibration system. The drainage system comprises a water collecting pool, the cover plate with the holes and a drainage pipe. The vibration system comprises a rotatingrod, a fixing shaft, a pedal, a support block and a spring. The debris flow prevention and treatment system can achieve effective control over the formation process and circulation process of the debris flow and solve the treatment problems of different scales of debris flow gullies. Soil and stone are separated from water by means of the water collecting pool and the drainage pipe, so that the hydrodynamic condition of the debris flow is weakened, and the damage power of the debris flow is reduced. The vibration system utilizes the kinetic energy of large stone blocks in the debris flow as power and can continuously and effectively guarantee that vibration happens, and therefore the cover plate is prevented from being blocked; and in this way, the drainage system can stably play the role,and effective prevention and treatment of the debris flow are achieved.

The invention discloses an efficient and long-service-life hydraulic valve main hole machining method, and belongs to the hole machining technology field. In the machining method, an oil port three-blade forming cutter, a three-blade chambering cutter and an eight-blade expanding reamer are sequentially used for machining a main hole of a hydraulic valve. One-time forming of a forming hole is guaranteed through the oil port three-blade forming cutter, a service life is long, and cutting efficiency is high. An unequal design of the three-blade chambering cutter is matched with a layered structure design so that chambering cutting vibration is reduced, a chambering machining allowance is large, concentricity of the main hole of an intermittent hydraulic valve is ensured, and machining precision and machining efficiency are high. Unequal parts of the eight-blade expanding reamer are combined with unequal teeth so that vibration of a cutter of expanding and reaming is greatly reduced, andsurface roughness and cylindricity of the main hole of the hydraulic valve, the reaming processing allowance and the cutting efficiency are improved; and the method has the advantages of high machining efficiency, good machining precision, a long service life of the cutter and the like, and a problem that hydraulic valves are scrapped due to blockage of ducts by residual cuttings is effectively solved.

The invention discloses a single-mass vibration fuzzy image acquisition and vibration parameter visual measurement experiment platform. The platform comprises a single-mass vibrator and a camera. The single-mass vibrator is connected with a vibrator exciter, the vibration exciter is controlled through a frequency converter, the vibration exciter drives the single-mass vibrator to vibrate, the single-mass vibrator is connected with the camera, and an independently fixed visual scaling board is arranged below the lens of the camera. According to the invention, the single-mass vibrator vibrates under the effect of the vibration exciter, a binocular stereo camera connected with a timbre vibrator vibrates together, and fuzzy images during vibration can be acquired through the lens of the vibrating camera. The experiment platform provides an experiment means for realizing acquisition of the vibration fuzzy images and image restoration. Research data under different vibration conditions can be obtained by changing the frequency and amplitude of the vibration conveniently through the frequency converter. An ideal experiment means is provided for analysis of degradation causes of the vibration fuzzy images, restoration of the vibration fuzzy images and vision-based vibration parameter measurement.

The invention discloses a building construction method of an interior wall. The construction method comprises the steps that (1) concrete is prepared, specifically, building debris is subjected to smashing operation through a smashing device, thus broken stones are prepared, then the broken stones, cement, water and a water reducing agent are evenly mixed through a stirring machine to get a raw material A, and then a compound A is prepared after an expanding agent is added into the raw material A and stirring is conducted continuously; (3) a wall is bricked, specifically, reinforcing steel bars are erected at the positions, corresponding to the indoor wall, of a construction site, and a brick wall is piled up on the outer portions of the reinforcing steel bars; and (4) a wall body is formed, specifically, concrete is poured into the brick wall and the reinforcing steel bars, and the wall body is formed after the concrete is solidified. According to the construction method of the indoorbuilding wall, sand and stones are directly manufactured through the building debris, and waste of non-renewable resources is effectively avoided. Investment of building debris treatment is omitted,the project cost is effectively lowered, and meanwhile the municipal administration cost can be lowered to a large extent. The input amount of water when the concrete is prepared is effectively decreased by adding the water reducing agent, resources are further saved, and the project cost is reduced.

The invention relates to a bearing testing machine based on three-direction vibration. The bearing testing machine based on three-direction vibration comprises a test bench; a test main body arranged above the test bench; a radial loading device used for applying a radial acting force to the test shaft; a driving device which is arranged on one side, in the axial direction of the test shaft, of the test main body and used for driving the test shaft to rotate; a transverse vibration device which is arranged on the other side, in the axial direction of the test shaft, of the test main body and used for providing transverse vibration; a vertical vibration device which is arranged on one side of the test main body in the vertical direction and is used for providing vertical vibration; a longitudinal vibration device which is arranged on one side of the test main body in the horizontal direction and is used for providing longitudinal vibration; and an air spring which is positioned between the test main body and the test bench so that the test main body is assembled above the test bench in a floating manner. The test main body is assembled above the test bench in a floating manner through an air spring so as to ensure that the test main body can vibrate in the transverse direction, the longitudinal direction and the vertical direction.

The invention belongs to the field of moulding manufacturing of rubber products, and discloses a rubber dynamic injection moulding device and method. The device comprises a rubber cold feeding screw extruder, a sliding ring, a vibration sleeve, an injection nozzle, an upper cushion plate, an upper form board, a lower form board, a lower cushion plate and an electro-hydraulic hydraulic vibration system which are connected in sequence. According to the device, a vibration field is stacked at the position of an injection mold. According to the method, on the basis of not changing the mold structure and the material formula, the vibration field is stacked in the main shear direction of rubber to change the fluidity of rubber materials. According to the dynamic injection moulding device and method, the rubber filling capacity can be enhanced, injection pressure can be reduced, energy consumption can be reduced, and product quality can be improved; and especially it is possible to moulding the large-size and high-quality rubber products.

The invention discloses a human breath energy collecting device. The human breath energy collecting device comprises a breath airflow power assembly and a piezoelectric harmonica cavity assembly, wherein the breath airflow power assembly comprises a gauze mask, a connector and a communication pipe, the connector is arranged on the gauze mask and located below the nose of a human, and the connector is connected with the piezoelectric harmonica cavity assembly through the communication pipe; the piezoelectric harmonica cavity assembly comprises a vibrator fixing tube and a piezoelectric vibrator, the tail end of the vibrator fixing tube is a breath airflow inlet and outlet, an opening is formed in the middle section of the vibrator fixing tube, the piezoelectric vibrator is arranged on the opening in the axial direction, one end of the piezoelectric vibrator is fixed to the vibrator fixing tube, and the other end of the piezoelectric vibrator is suspended to form a cantilever beam structure. Through the human breath energy collecting device, the resonant frequency of reeds can be determined according to the breathing frequency; through the arrangement of the cantilever beam structure of the piezoelectric vibrator, it can be well guaranteed that piezoelectric ceramics can vibrate under the resonant frequency and the strongest deformation can be generated, and consequently the largest piezoelectric energy can be stimulated.

The invention discloses a portable anti-overpressure exhaust valve leakproofness detection device, which comprises a detection device main body, wherein the top of the detection device main body is hinged to a protection end cover, one side of the inner side of the detection device main body is fixedly provided with an operation machine box, the other side of the inner part of the detection device main body is provided with a detection chamber, a wind speed detector is fixedly installed on one side of the interior of the detection cavity, a temperature detector is cooperatively installed at the position, which corresponds to the position over the wind speed detector, of the interior of the protection end cover, and by designing a spraying assembly installed on the detection device main body, protection spraying treatment on the device is achieved, and the situation that the detection result is affected by crushed materials, dust and the like in the exhaust valve assembly wrapping detection process is avoided. Meanwhile, the detection direction of the device is increased by means of the wind speed detector and the temperature detector which are designed and installed on the inner side of the detection device body, and the detection result is more accurate.

The invention provides a shearing box, comprising at least two bases arranged on different vibrating tables, and laminated box bodies which are placed on the bases and are formed by overlapping framesprovided with openings at the side edges; every two adjacent bases are connected with each other by means of a bearing plate, one end of the bearing plate is fixed, and the other end of the bearing plate is movable; every two adjacent frames, which are positioned on the different laminated box bodies and are arranged on the same horizontal plane, are connected with each other by means of a universal coupling; openings of the adjacent laminated box bodies are connected with each other by means of a baffle plate so as to form a communicated container; all the laminated box bodies are respectively provided with limiting components, so that the soil in the shearing box can be subjected to different excitation; furthermore, the seismic ground motions of the bases are relatively independent, but can be mutually propagated; the laminated box bodies are communicated with one another, and the soil can be placed at the communicating parts; the vibration is propagated through the soil medium, sothat the constitutive property that the frame structure of the shearing box is perpendicular to the vibration direction is met; furthermore, the structure can rotate along multiple directions, the real situation of the interaction between the soil and the underground structure under multi-point excitation is simulated, the experiment is accurate.

The invention discloses a roller bearing vibration measuring device. The roller bearing vibration measuring device comprises a mandrel for mounting a measured bearing, a sensor and a radial loading mechanism, wherein the sensor is positioned above the mandrel; a measuring head of the sensor is in contact with the outer surface of the top of the measured bearing on the mandrel to form a contact C;the radial loading mechanism comprises a first radial loading assembly and a second radial loading assembly which are arranged below the mandrel respectively. The roller bearing vibration measuring device is reasonable in structure; the load used during measurement is the same as that borne by the bearing during actual use, so that a measurement error is reduced, and that vibration and noises of the bearing can meet the using requirements of a customer in the mounting and using processes is guaranteed.

The invention relates to a preparation method of a hollow fiber nanofiltration membrane. The method is characterized by including the steps of spinning solution preparation, spinning, curing and post-treatment pore retention. The spinning solution preparation includes: adding polyethersulfone, a pore-making agent and an organic solvent into a dissolving tank, utilizing a crusher for forward rotating stirring, and stopping the action for 30-60s, then conducting reverse rotating stirring, and stopping the action for 30s, conducting mixing crushing stirring for full dissolution until a spinning solution is obtained; the spinning includes: subjecting the spinning solution to the bubble removal pretreatment by a vacuum defoaming device; the curing includes: passing a primary membrane of the hollow fiber nanofiltration membrane through gas bath with a casting temperature of 30-50DEG C and a relative humidity of casting of 60-80% in order for curing pre-evaporation, then letting the primary membrane subjected to gas bath curing enter coagulating bath in a 15-40% dimethyl sulfoxide aqueous solution for stretching curing under a drafting godet stretching ratio of 1.9-2.3 times; and the post-treatment pore retention includes: conducting steam washing and pore retention ultrasonic cleaning on the stretch cured hollow fiber nanofiltration membrane in order, and finally performing air-drying, thus obtaining the hollow fiber nanofiltration membrane.