A self-resetting magneto-rheological multi-dimensional shock-absorbing and isolating device

Abstract

The invention provides a self-resetting magneto-rheological multidimensional vibration isolation and reduction device with a self-resetting function and a multidimensional vibration reduction capability. The device comprises a base and a magneto-rheological damper, wherein a spherical hinge support seat is arranged at the upper part of the edge of the base and is connected to a spherical hinge cover plate through bolts; one end of the magneto-rheological damper is arranged between the spherical hinge cover plate and the spherical hinge support seat; the other end of the magneto-rheological damper is arranged between the spherical hinge cover plate and a spherical hinge connection part; the spherical hinge cover plate is also connected to the spherical hinge connection part through bolts; the spherical hinge connection part sleeves a resetting column; the top of the spherical hinge connection part is connected with a top plate through bolts; the top plate is arranged at the upper part of the resetting column. Through the device, the horizontal bidirectional vibration reduction can be implemented; the external excitation is isolated while the vibration energy can be consumed, so that the seismic isolation device is protected from being pulled and broken under the high external excitation and automatically reset after the external excitation is reduced or eliminated; besides, the device is simple in structure, high in energy consumption capability, low in energy consumption, high in reliability, continuous and adjustable in damping force.

Description

Technical field [0001] The invention relates to a shock-absorbing and isolating device, in particular to a self-resetting device that uses a magnetorheological damper for multi-dimensional shock-absorbing and isolating. Background technique [0002] The collapse and destruction of civil building structures during an earthquake is the main cause of casualties. Seismic isolation technology is an effective means to improve the seismic performance of the structure, that is, the seismic isolation device installed at the bottom of the structure consumes or isolates the input structure of the earthquake Energy to reduce the seismic response of the structure. [0003] At present, the commonly used shock-absorbing and isolating devices for earthquake resistance of civil structures mainly include rubber shock-absorbing pads, lead-core rubber shock-absorbing pads, sliding shock-absorbing devices and viscoelastic shock-absorbing devices, but the vertical stiffness of viscoelastic materials and...

AI Technical Summary

Problems solved by technology

[0003] At present, the commonly used seismic isolation devices for civil structure anti-seismic mainly include rubber vibration isolation pads, lead core rubber vibration isolation pads, sliding vibration isolation devices and viscoelastic vibration isolation devices, etc., but the vertical stiffness of viscoelastic materials and rubber materials is small. , The damping force is not adjustable, the stability is poor under horizontal load, the temperature sensitivity is strong, the durability is poor, and the energy dissipation and vibration reduction effect on low-frequency civil structures is not outstanding

[0004] Magneto-rheological dampers have good adjustability and energy-dissipating shock absorption performance, and have good vibration-reducing effects on high-, medium-, and low-frequency structures, but the existing magnetorheological dampers do not yet have multi-dimensional Shock ability, but also does not have automatic reset function

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