Memory alloy damper

Abstract

The invention discloses a memory alloy damper which comprises a memory alloy spring assembly, a shell, a limiting strip, a battery, a guide rod, a partition plate, a displacement meter and a circuit.The memory alloy spring assembly comprises a memory alloy spring and a pull rod; the memory alloy assembly is connected with the partition plate through bolts. The limiting strip is connected with theshell through a bolt; the displacement meter is fixed on the inner wall of the shell through the strong magnet; when the guide rod moves left and right due to the vibration of the inhaul cable, the partition plate on one side is driven to move so as to drive the memory alloy spring to be stretched; and when the displacement meter detects a certain degree of displacement, current passes through the memory alloy spring, so that the memory alloy spring is heated to generate relatively large restoring stress, the amplitude of an inhaul cable is reduced, and when the vibration of the inhaul cableis slowed down, the circuit is disconnected. The vibration of the inhaul cable can be effectively controlled, the working mode is efficient and energy-saving, the vibration control cost is reduced, and the structural safety can be effectively improved.

Description

technical field [0001] The invention provides a memory alloy damper, which belongs to the scope of structural vibration control. Background technique [0002] Vibration control in the field of civil engineering can generally be divided into active control and passive control according to the presence or absence of external energy input, as well as semi-active control and hybrid control formed by the combination of these two control methods. Commonly used active control methods include: actively tuned mass damper, active cable technology, pulse control, etc. Passive control methods mainly include: base isolation control, metal yield damper, friction damper and shock absorber for vibration reduction, etc. [0003] The passive control method is to install shock-absorbing and energy-consuming equipment at a special position of the structure to suppress the deformation and movement of the structure under the action of external force. It has the characteristics of simple structur...

AI Technical Summary

Problems solved by technology

[0003] The passive control method is to install shock-absorbing and energy-consuming equipment at a special position of the structure to suppress the deformation and movement of the structure under the action of external force. It has the characteristics of simple structure, no need for external energy, long life, convenient maintenance, and low cost. It is widely used in structural engineering It has been widely used, such as viscous damper and metal yield damper. The main structure of viscous damper includes cylinder, viscous liquid, piston, piston rod, damping material chamber, sealing sleeve, sealing ring, etc. This type of damper has high requirements on the sealing of the instrument, and there are problems such as liquid leakage that affect the reliability of the instrument

However, metal yield dampers have problems such as aging of metal materials and plastic deformation due to fatigue, which is not conducive to the long-term work of the damper.

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