Magnetorheological-shape memory alloy hollow ball intelligent vibration isolator

Abstract

The invention relates to a magnetorheological-shape memory alloy hollow ball intelligent vibration isolator, which mainly comprises an upper flange, a sealing ring, a conducting wire, a hollow piston connecting rod, a magnetorheological fluid, thick-wall and thin-wall shape memory alloy hollow balls, a working cylinder, an electromagnetic solenoid ring and a lower flange. The vibration isolator is characterized in that the upper end of the piston connecting rod is connected with the upper flange, and the raised circumference of the lower end of the piston connecting rod is provided with the electromagnetic solenoid ring which is connected with an external control power supply by the hollow piston connecting rod through the conducting wire; the magnetorheological fluid is filled in the working cylinder; four layers of the thick-wall and thin-wall shape memory alloy hollow balls are placed at the raised upside and downside of the lower end of the piston connecting rod respectively, and a piston free from a force is suspended in the middle of the working cylinder by adjusting the size of the working cylinder and the wall thickness of the shape memory alloy balls; and the vibration isolator is fixed at a position needing to carry out vibration control through the upper flange and the lower flange. The vibration isolator has the advantages of strong self-resetting capability and vibration isolating capability, simple structure and convenience for mounting and detaching, and still has vibration isolating function under the condition of power failure.

Description

technical field [0001] The invention belongs to the technical field of civil engineering and relates to a magneto-rheological-shape memory alloy hollow ball intelligent vibration isolator. Background technique [0002] Vibration is a phenomenon often encountered in the field of civil engineering, and it is a special form of mechanical motion. The theory of automatic control is derived from mechanics, which refers to the use of control devices to make one or more physical quantities in the controlled object operate accurately according to the desired law without the direct participation of people. Structural vibration control can effectively reduce the damage of structures under external loads and improve the disaster prevention performance of structures. Vibration control can consume vibration energy through vibration reduction and vibration isolation devices, or apply external energy to offset the impact of external loads on the structure. Specifically, by installing cert...

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Problems solved by technology

[0005] The invention provides a magneto-rheological-shape memory alloy hollow ball intelligent vibration isolator, which aims to solve the problems of the existing magneto-rheological vibration isolators such as limited output range, inability to self-reset, failure to work normally when power is off, etc.

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