Self-resetting device with capacity of multi-stage rigidity self-adjustment

Abstract

The invention relates to a self-resetting device with capacity of multi-stage rigidity self-adjustment. A guide rod penetrates through an upper movable plate, an upper outer concave barrel, an upper inner concave barrel, a lower inner convex barrel, a lower outer convex barrel and a lower movable plate in an outer cylinder from top to bottom; the guide rod is provided with surfaces which are propped against the upper surface of the upper movable plate and the lower surface of the lower movable plate respectively; the lower end of the outer cylinder is fixed with a lower connecting part, the lower connecting part is provided with a reinforcing rib barrel extending upwards, and the upper end of the reinforcing rib barrel limits downward movement of the lower movable plate; an upper inner spring is arranged outside the guide rod in a sleeving manner and is mounted between an outer extended flange I and the upper movable plate; a lower inner spring is arranged outside the guide rod in a sleeving manner and mounted between the lower movable plate and an outer extended flange IV; and an outer spring is arranged outside the guide rod in a sleeving manner and mounted between the upper outer concave barrel and the lower outer convex barrel. The self-resetting device can automatically adjust own properties according to the current external excitation action on the structure and the characteristics of structural dynamic response, and the engineering problem of single applicable scene of the existing self-resetting device is solved.

Description

technical field [0001] The invention relates to a self-resetting device for anti-seismic, in particular to a self-resetting device for self-adjustment of multi-stage stiffness, which belongs to the field of structural shock-absorbing and anti-seismic technology. Background technique [0002] Structural passive control technology is to arrange energy-dissipating shock-absorbing devices in the structure to reduce the dynamic response of the structure. It has the characteristics of simple structure, convenient maintenance and low cost, and it does not require external energy to ensure its effectiveness in earthquakes and other situations. Therefore, it is obtained Widespread application. [0003] During its whole life cycle, the building structure may be subjected to various external excitations such as subway vibration, machine operation vibration, typhoon and earthquake. When the building structure is subjected to different external excitations, the structure will show diffe...

AI Technical Summary

Problems solved by technology

[0005] The invention provides a multi-stage stiffness variable self-resetting device, which can provide a stable and reliable self-resetting force for the structure no matter whether the device is in a state of compression or tension, and can and structural dynamic response characteristics, automatically adjust its own performance, and solve the engineering problem that the current self-resetting device is applicable to a single scene

Images