Inertia impact type piezoelectric actuator capable of carrying heavy load

• Main Authors: WU YAXUAN, HUANG HU, XU ZHI, YOU LINJING, CAO YINGHUA, TANG JIZHOU, YI CHUNXUE
• Format: Patent
• Language: Chinese; English
• Published: 30.11.2021
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; GENERATION

The utility model relates to an inertia impact type piezoelectric actuator capable of carrying a large load, and belongs to the field of precision machinery. The actuator is composed of a load platform (inertia mass block), a piezoelectric stack, a leaf-shaped flexible hinge, a main mass block, a pre-tightening mechanism, a rolling bearing and a base. Linear deformation generated by electrification of the piezoelectric stack is converted into angular displacement of the load platform (inertial mass block) through three blade-shaped flexible hinges which are circumferentially and uniformly distributed by taking a rotation center as an axis, and the angular displacement of the load platform (inertial mass block) is realized based on an inertial impact principle. The utility model has the advantages that through the special structural design, the load mass is converted into the additional inertia mass, the step angle of the main mass block is increased, and the large vertical load can be driven under the conditi