40results about How to "Realize high frequency vibration" patented technology

The invention provides a laser vibration displacement sensor and a measuring method of the laser vibration displacement sensor. A laser device emits laser, the laser is projected to a vibration object through a collimation system, perpendicularly scattered light returns to the laser device through the collimation system, and then a self-mixing interference system is formed. A detector measures the output power of the laser device and enables high-frequency vibration measurement of the vibration object to be achieved through signal modulation. The light enters a focusing system through diagonal scattering of the vibration object, positions of focusing light spots are obtained on the scattering detector in order to form a laser triangulation structure, the absolute distance of the object can be obtained in an inversion mode through the positions of the light spots on the scattering detector, and low-frequency displacement change of the vibration object can be measured. According to the laser vibration displacement sensor and the measuring method of the laser vibration displacement sensor, organic combination of the laser triangulation and the laser self-mixing technology is achieved under the situation that systematic complexity is not increased, and the functions of measuring high-frequency vibration and low-frequency displacement change are achieved.

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.

A support type cement component high-frequency vibration table comprises a vibrator. A fixed sleeve is connected to the outer end face of the vibrator in a sleeving mode. A vibration table body is installed at the top end of the fixed sleeve. A movable to-be-vibrated cement component mold non-fixedly connected to the vibration table body is placed on the vibration table body. At least three sets of extending supports are installed at the side end of the vibration table body. At least three sets of stretching type locking seats corresponding to the at least three sets of extending supports are slidably installed on the at least three sets of extending supports, are located on the outer end face of the to-be-vibrated cement component mold and lock the to-be-vibrated cement component mold on the vibration table body fixedly. Bearing plates are installed on the end side bottom faces of the at least three sets of extending supports. Elastic parts are installed under the bearing plates. The bottom ends of the elastic parts abut against the bearing parts of a machine body. The support type cement component high-frequency vibration table can achieve high-frequency vibration, the compactness of a cement component is improved, and meanwhile, the usage requirements of molds of different shapes can be met.

The invention discloses a vibrating table for a cement component. The vibrating table comprises a vibrator and a drive motor for driving the vibrator as well as a fixed plate and a vibrating plate, which are mutually independent, wherein the vibrating plate is used for placing a to-be-vibrated cement component; the vibrator is arranged on the bottom surface of the vibrating plate; an extending bracket is arranged at the side end of the vibrating plate; a spring blocking slot is formed in the bottom surface of the extending bracket; the extending bracket at the side end of the spring blocking slot is equipped with a limiting convex base; a bearing plate is mounted on a fixed plate below the spring blocking slot; a spring blocking slot II which corresponds to the spring blocking slot is formed in the bearing plate; springs are inserted and connected in the spring blocking slot and the spring blocking slot II; a limiting blocking plate is mounted on the bearing plate at the side end of the spring blocking slot II; a limiting blocking slot is formed in the limiting blocking plate; and the limiting blocking slot is formed in the side end of a limiting convex base and is used for placing the extending bracket, so that the vibrating plate performs limited shaking or motion in the limiting blocking slot. The vibrating table effectively solves the problems that the vibrating table is not good in vibrating effect, and cannot meet use of various models, realizes high-frequency vibration and increases compactness of the cement component.

The invention provides a high-frequency micro-moving electrode precision clamp. The high-frequency micro-moving electrode precision clamp comprises a supporting piece, an electrode clamp arranged on the supporting piece, the electrode clamp is provided with a through hole for an electrode to penetrate through, an elastic fixing piece is arranged corresponding to the through hole and is used for fixing the electrode, the elastic fixing part is used for pushing a lever through an air cylinder, the lever is capable of enabling the elastic fixing piece to deform so as to clamp the electrode. According to the high-frequency micro-moving electrode precision clamp, a fixed handle electrode is utilized, the efficient and high-precision clamping and replacing of the electrode are achieved, and high-frequency vibration during electrode machining is achieved.

The invention discloses a seeder for crop planting. The seeder for crop planting comprises an installation shell; a driving motor is mounted in the installation shell; a driving wheel is mounted on the bottom of the installation shell; the part, located at one side of the driving motor, of the installation shell is internally provided with a material storage box; the bottom of the material storagebox is provided with a blanking pipeline; the bottom of the blanking pipeline is provided with a discharge outlet; an ultrasonic vibration plate is arranged at the discharge outlet; the part, locatedat one side of the ultrasonic vibration plate, of the installation shell is internally provided with an ultrasonic generator; the part, located at the discharge outlet, of the bottom of the installation shell is provided with an opener and a covering device; the discharge outlet is arranged between the opener and the covering device; the surface of the installation shell is provided with a PLC controller; and the surface of the PLC controller is provided with a timer. Through arrangement of the opener, the covering device, the material storage box, the timer, the PLC controller, the ultrasonic generator and the ultrasonic vibration plate, the seeder provided by the invention overcomes the problems that conventional seeders cannot adjust fixed-spacing seeding and have low work efficiency.

The invention provides an environment-friendly casting crude sand screening device based on a part casting process, relates to the technical field of casting auxiliary equipment, and solves the problem that high-frequency auxiliary vibration screening cannot be realized while vibration screening is performed through structural improvement. And automatic blockage clearing of the sieve pores cannot be realized while screening is carried out. The environment-friendly casting crude sand screening device based on the part casting technology comprises a box body. The box body is of a rectangular box-shaped structure. Through the arrangement of the frame, the auxiliary rods are welded to the frame in the rectangular array shape, the auxiliary rods welded in the rectangular array shape are aligned to the screen holes formed in the rectangular array shape, and when the screening frame moves downwards, the auxiliary rods penetrate through the screen holes, and therefore sand clamped in the screen holes can be cleaned.

The invention relates to a soil-structure contact surface shear test device capable of realizing bidirectional high-frequency vibration. The device comprises a test unit, a loading unit and a measurement and control unit, the test unit comprises a test bench, an upper shear box fixing mechanism arranged on the test bench, an upper shear box arranged on the upper shear box fixing mechanism, a double-slide-rail motion platform arranged on the test bench, a tray arranged on the double-slide-rail motion platform and a structural panel arranged on the tray and located below the upper shear box. The loading unit comprises an X-direction voice coil motor loading mechanism, a Y-direction voice coil motor loading mechanism and a Z-direction loading mechanism; the X-direction voice coil motor loading mechanism and the Y-direction voice coil motor loading mechanism are respectively matched with the tray; and the Z-direction loading mechanism is matched with the upper shear box. Compared with the prior art, combined loading of bidirectional high-frequency vibration and static shearing of the contact surface and synchronous acquisition of multiple response quantities are realized, friction between the upper shearing box and the structural panel in the shearing process is avoided, and stable application of vertical pressure in the high-frequency vibration process is realized.

The invention relates to the technical field of electromagnetic control, in particular to an electromagnetic vibrator which is compact and reasonable in structure and low in generated noise. The electromagnetic vibrator comprises a base, a guide column is installed on the base and sleeved with a movable iron core, a power supply connecting wire is arranged on the side face of the movable iron core, and a coil and an electromagnet are arranged in the movable iron core; and a pressure spring for pressing the movable iron core is arranged on the guide column, a mounting groove is formed in the middle of the base, a fixed iron block is arranged in the mounting groove, a gap is reserved between the end surface of the fixed iron block and the movable iron core, and a silicon rubber case surrounding the movable iron core is arranged on the base.