5results about How to "Increase vibrational energy" patented technology

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 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 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.