A Disc Spring Damper with Adjustable Early Stiffness

Abstract

The invention discloses a disc spring damper with an early stiffness adjusting function. The disc spring damper is characterized in that a reverse pressing device is arranged between two end plates of the damper, the reverse pressing device comprises two sets of prepressing steel cables and two floating pressing plates, each set of prepressing steel cables comprises at least three steel cables, and each floating pressing plate is arranged on a guide rod between the corresponding end plate and a disc spring set; the two sets of prepressing steel cables are symmetrically distributed on the periphery of the disc spring set around the axes of the guide rods in a linear mode. One ends of each set of prepressing steel cables are fixed to one of the floating pressing plates, and the other ends of each set of prepressing steel cables penetrate through the other floating pressing plate and anchored onto the end plate adjacent to the floating pressing plate through a steel cable self-locking tensioning anchor. The two sets of prepressing steel cables are tensioned, and the disc spring is clamped between the two floating pressing plates all the time.

Description

technical field [0001] The present invention relates to shock absorbing devices, and in particular to dampers using disc springs. Background technique [0002] A damper is a shock-absorbing device that consumes motion energy by providing motion resistance. The use of dampers to absorb shock is a traditional technology widely used in industries such as aerospace, aviation, military industry, guns and automobiles. Since the 1970s, people have gradually applied the technology of using dampers to absorb and absorb shocks in structural engineering such as buildings, bridges, and railways. Disc spring dampers are widely used in various building anti-seismic structures due to their high impact resistance, low cost and good shock absorption effect. [0003] People pursue a comprehensive anti-seismic performance that combines "resistance" and "consumption" for the design of buildings, especially high-rise buildings, that is, under the action of weak wind vibration and small earthqu...

AI Technical Summary

Problems solved by technology

[0006] 1. The load connecting rod is kept balanced under the joint action of two sets of disc springs. Although the pre-tightening force of the two sets of disc springs can be adjusted, no matter how it is adjusted, the force of the two sets of disc springs on the load connecting rod will The acting forces are a set of equal and opposite forces, and simply applying any external force on the load connecting rod will break this balance and deform the two sets of disc springs, so the damper described cannot preset the early stiffness ;

[0007] 2. The damping coefficient of the disc spring is changed by preloading two sets of disc springs. This change is very limited, which leads to a small adjustment range of the equivalent stiffness of the damper, which often cannot meet the frequency requirements of building isolation;

[0008] 3. In this invention, two sets of disc springs must be used together to provide damping when the damper is under compression or tension load. This not only causes a certain amount of waste, but also greatly increases the length of the damper, which is not suitable for some Use where the installation space is tight

It can be seen that although the stiffness of the spring in the patent application scheme can be changed, the effective working length of the spring is not only significantly shortened, but also can only be compressed for energy consumption and vibration reduction, and cannot be stretched for energy consumption and vibration reduction.

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