Quasi-zero stiffness vibration isolator with energy recovery function

Abstract

The invention provides a quasi-zero stiffness vibration isolator with an energy recovery function, and belongs to the technical field of vibration isolation. The quasi-zero stiffness vibration isolator comprises a shell, a gear cam shaft and a rack shaft are connected into the shell, the axes of the gear cam shaft and the rack shaft are perpendicular, and the gear cam shaft is matched with the rack shaft. A slideway symmetrical about the axis of the gear cam shaft is arranged on the outer side of the shell, and a sliding column is embedded into the slideway, makes contact with an auxiliary spring and further makes contact with the cam end of the gear cam shaft; the adjusting mechanism is arranged at one end of the shell and makes contact with the rack shaft through a main spring. A gear pair is connected to the end, away from the cam, of the gear cam shaft and fixedly connected with an electric generator. The elastic direction of the auxiliary spring providing the negative stiffness isparallel to the elastic direction of a positive spring providing the positive stiffness, so that the transverse size of the vibration isolator is greatly reduced, and the vibration isolator can be applied to places with high space requirements; movement can be transmitted to the electric generator through gear transmission to achieve power generation, and energy recovery is achieved.

Description

technical field [0001] The invention belongs to the technical field of vibration isolation, and in particular relates to a quasi-zero stiffness vibration isolator with energy recovery function. Background technique [0002] The advancement of science and technology has promoted the development of precision instruments, and precision measuring instruments have higher and higher requirements for vibration control. In recent years, the geometric nonlinear problems in engineering applications and the research and design of vibration isolators have attracted extensive attention from scholars at home and abroad. The quasi-zero stiffness vibration isolator makes the stiffness near the equilibrium position close to zero through the parallel connection of positive and negative stiffness, which meets the ideal requirement of "high static and low dynamic" of the vibration isolator. Existing quasi-zero stiffness is mostly achieved by parallel connection of positive and negative stiffne...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies in the prior art, the present invention provides a quasi-zero-stiffness vibration isolator with energy recovery function. Under the requirement of ensuring the quasi-zero stiffness, the vibration isolator takes up a large space laterally and cannot be used in the space Application problems in places with high requirements, and use the generator to absorb the useless vibration energy of the vibration isolation object to realize energy recovery

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