11results about How to "Increase vibrational energy" patented technology

The utility model relates to the technical field of roller shutter door installation, and discloses an anti-loosening roller shutter door motor support plate which comprises a support plate body, the support plate body is provided with a plurality of first protrusions formed through extrusion, the inner surface of each first protrusion is provided with a connecting plate, each first protrusion is provided with a via hole, and the connecting plate is connected with the via hole. Each first protrusion is provided with a first connecting column used for being connected with a motor, one end of each first connecting column penetrates through the corresponding via hole to be connected with the connecting plate, the other end of each first connecting column penetrates through the corresponding motor supporting foot and is in threaded connection with a nut, and the first connecting columns and the nuts are matched to limit the motors. A rubber sleeve is arranged at the end, close to the connecting plate, of the first connecting column, and when the first connecting column penetrates through the motor supporting foot, the rubber sleeve is attached to the inner wall of the motor supporting foot. According to the utility model, the stability of connection between the motor and the motor support plate can be improved, and the stability of connection between the motor support plate and the wall body can be improved, thereby ensuring stable operation and low noise of the motor.

The utility model relates to the technical field of bridge construction, and discloses a crossing movable platform attached to a high-altitude bridge, which comprises a space structure body, the top end of the space structure body is fixedly connected with the bottom surface of the bridge, and the space structure body comprises a plurality of polygonal annular frames; each polygonal annular frame comprises a polygonal bottom frame and vertical supporting frames distributed in the circumferential direction of the bottom frame. The multiple polygonal annular frames are sequentially arranged in the length direction of the bridge. The anti-falling net is arranged on the bottom surface and the circumferential direction of the space structure body in a tensioning manner; the climbing entertainment device is located in the space structure body and attached to the space structure body; the corners of the bottom frames of every two adjacent polygonal annular frames are aligned at the top points and connected through circumferential dampers used for consuming horizontal vibration, and metal dampers used for consuming vertical vibration are arranged between the top of the space structure body and the bridge. The technical problems that an ultra-long movable platform attached to a high-altitude bridge is greatly influenced by wind shock, and the sense of safety of tourists is low are solved.

The invention discloses a plasma jet generation characteristic regulation and control device and method based on tube wall temperature, and the device comprises a dielectric barrier tube which is made of a heat-resistant insulating material and is used for generating a plasma jet at an outlet of the dielectric barrier tube when rare gas is introduced into the dielectric barrier tube and discharge voltage is applied between a high-voltage electrode and a ground electrode; the high-voltage electrode is arranged in the dielectric barrier tube and is used for applying discharge voltage to generate plasma; the ground electrode is arranged opposite to the high-voltage electrode and is used for being matched with the high-voltage electrode to form a discharge path in the dielectric barrier tube; and the heating device is arranged to change the generation and propagation characteristics of the ionization waves by regulating and controlling the pipe wall temperature of the dielectric barrier pipe, so as to regulate and control the length and the chemical activity of the plasma jet. According to the invention, the length of the plasma jet can be greatly increased and the chemical activity of the plasma can be improved without changing any power supply parameters, electrode structure parameters, working gas parameters and the like.

The embodiment of the utility model belongs to the technology of household appliances, and provides a refrigerator which comprises a refrigerator body, a refrigerator door and a refrigerator door, the door body is connected with the box body so as to open or close the storage chamber, the door body comprises a first door body and a second door body which are oppositely opened, and the first door body comprises a body and an overturning beam assembly connected with the body; the guide part is connected with the box body and arranged at the top of the storage chamber, and the guide part comprises a guide part body provided with a guide cavity; and the acoustic black hole vibration reduction structure is connected with the guiding piece body, and at least part of the inner wall of the guiding cavity is formed by the acoustic black hole vibration reduction structure. The refrigerator provided by the utility model is low in noise.

The invention belongs to the technical field of MEMS (micro-electromechanical systems) sensors, and discloses a multi-drive-mode micro-cantilever plate array MEMS viscosity sensor chip and a working method thereof. A silicon-based clamped body is connected with a first step micro-cantilever plate array suspension structure and a second step micro-cantilever plate array suspension structure; each of the first-step micro-cantilever plate array suspension structure and the second-step micro-cantilever plate array suspension structure comprises a rectangular supporting plate and a wide plate cantilever which are coaxially arranged, the two ends of the supporting plate are connected with the silicon-based clamped support body and the wide plate cantilever respectively, and the width of the supporting plate is smaller than that of the wide plate cantilever; a metal layer coil is arranged on the surface of the wide plate cantilever; piezoelectric electrode pairs are symmetrically arranged on the supporting plate, and each electrode is connected with a metal lead. A rigidity connecting beam is connected between the two supporting plates, the two supporting plates are the same in size, and the length and the width of the first wide plate cantilever are smaller than or equal to the length and the width of the second wide plate cantilever respectively. The vibration characteristic of the viscosity sensor immersed in the viscous fluid is improved, so that the viscosity measurement precision and stability of the viscosity sensor are improved.

The present application relates to a kind of parallel frequency large complex surface component ultrasonic vibration assisted grinding device and application, the device includes: indexing transmission system, ultrasonic vibration system and support shell component, wherein the rigid coupling of indexing transmission system connects outer indexing disc with transmission shaft, indexing rotation and locking are carried out during the grinding process of complex surface component, external ultrasonic power is connected with ultrasonic transducer group by electric slip ring;Ultrasonic vibration system includes sequentially connected parallel ultrasonic transducer group, transmission rod and amplitude bar;The vibration superposition effect of multiple ultrasonic transducers makes large mass complex surface component ultrasonic vibration, realizes large complex surface component ultrasonic vibration assisted high-efficiency precision grinding processing.Support shell component fixes ultrasonic device and grinding wheel on machine platform, guarantee system stiffness.The device can make large mass complex surface axial ultrasonic vibration, and after the grinding of single surface feature is completed, indexing circumferential rotation is carried out, and the precision grinding of entire complex surface component is completed.

This invention discloses an additive manufacturing-based inertial amplification nonlinear low-frequency vibration isolation metamaterial structure, vibration isolation device, and its performance control method. The vibration isolation metamaterial structure includes a rhombic frame structure, an inertial amplification unit, and a square spring structure. The square spring structure is arranged within the rhombic frame structure, with its two ends connected to a pair of opposite corners of the rhombic frame structure. The elastic extension direction of the square spring structure is parallel to the diagonal of this pair of opposite corners of the rhombic frame structure. The inertial amplification unit has a centrally symmetrical structure, including a rigid rod, two counterweights, and two diagonal rods. The center of symmetry of the inertial amplification unit, the center of the rhombic frame structure, and the center of the square spring structure all coincide in projection. Therefore, the vibration isolation metamaterial structure of this invention significantly widens the bandgap range and enhances low-frequency vibration isolation performance, exhibiting excellent performance in suppressing longitudinal waves in the 0-1000Hz low-frequency range, increasing vibration damping, and energy absorption.

The present invention relates to an electronic device, comprising a first substrate, a partition wall structure, a pressurizing component, a second substrate, a housing and a plurality of first conductive parts. The first substrate has a through hole and a first surface and a second surface opposite to each other. The partition wall structure is arranged on the first surface and surrounds a first cavity. The pressurizing component is arranged on the partition wall structure and covers the first cavity. The pressurizing component at least includes a mass block and a diaphragm. The housing is arranged on the second substrate and forms a second cavity together with the second substrate. The first cavity is formed in the second cavity. A plurality of first conductive parts are arranged between the first substrate and the second substrate. There is a gap between any two adjacent first conductive parts.

The invention provides a piezoelectric micropump and electronic equipment. The piezoelectric micropump comprises: piezoelectric ceramic; the first diaphragm is connected with the piezoelectric ceramic; the second diaphragm is arranged on the side, away from the piezoelectric ceramic, of the first diaphragm, or the second diaphragm is arranged on the side, away from the first diaphragm, of the piezoelectric ceramic; and the second diaphragm can form resonance under the condition that the piezoelectric ceramic drives the first diaphragm to generate vibration. The compression ratio in the cavity of the piezoelectric micropump can be improved, and the flow is enhanced.

The invention discloses a vibration mill eccentric block included angle optimization method and system, and the method comprises the steps: obtaining the structural parameters of a vibration mill, and constructing a relational expression between the eccentric block included angle and the vibration parameters in combination with the dynamics principle of the vibration mill; determining trajectory analysis points of the wall surface of the container, and constructing a periodic closed-loop motion trajectory model of the trajectory analysis points associated with the included angle of the eccentric block on a preset projection plane; on the basis of the relational expression and a periodic closed-loop motion trajectory model, trajectory feature calculation is carried out, and motion trajectory geometric features of the trajectory analysis points are obtained; and screening the geometrical characteristics of the motion trails, and taking the corresponding eccentric block included angle of the vibrating mill in a screening result as the optimal eccentric block included angle of the vibrating mill. According to the optimization method, the optimization cost can be reduced and the optimization efficiency can be improved by quickly determining the optimal eccentric block included angle. The vibration mill eccentric block included angle optimization method and system can be widely applied to the technical field of vibration mill structure parameter optimization.

The invention provides a steel tube tower component vibration suppression device which comprises a fixing part fixedly connected with a steel tube tower component; the sliding guide part is fixed on the fixing part; the magnetic field body is fixedly connected with the fixing part and forms a magnetic field; the conductor is fixed on the sliding guide part through sliding fit, and at least part of the conductor is arranged in the magnetic field; the magnetic field body forms a magnetic field around the conductor, when the magnetic field body is vibrated, the conductor vibrates to cut magnetic induction lines, induced electromotive force is generated, then electromagnetic eddy current is generated, and vibration energy is converted into electric heat energy to be consumed. The device forms vibration damping through the hysteresis effect, is fixed to the steel pipe component and absorbs energy transmitted by steel pipe vibration, the vortex-induced vibration strength of the steel pipe component is further reduced, an original structure is slightly changed, installation is easier and more convenient, energy consumption is high, damping is large, and the better vibration suppression effect is achieved.