Disc spring damper with adjustable initial rigidity

Abstract

The invention relates to a disc spring damper with the adjustable initial rigidity. The damper is characterized in that a counter pressure device is arranged between two end plates and comprises two pre-compression steel wire rope units and two floating compression plates, each pre-compression steel wire rope unit comprises at least three pre-compression steel wire ropes, and the two floating compression plates are arranged on guide rods between the end plates and a disc spring set in a sleeving mode respectively; the two pre-compression steel wire rope units are symmetrically distributed around the disc spring set around the axes of the guide rods in a linear mode, one end of each pre-compression steel wire rope unit is fixed to one floating compression plate, and the other end of each pre-compression steel wire rope unit penetrates through the other floating compression plate to be fixed to the end plate adjacent to the floating compression plate; the middle of each pre-compression steel wire rope is connected to a rigging turnbuckle in series; and when the two pre-compression steel wire rope units are tensioned, the disc spring set can be always clamped between the two floating compression plates.

Description

Technical field [0001] The present invention relates to a shock absorber, in particular to a damper using a disc spring. Background technique [0002] A damper is a shock absorbing device that provides resistance to movement to consume movement energy. The use of dampers to absorb energy and shock is a traditional technology widely used in aerospace, aviation, military industry, guns, and automobiles. Since the 1970s, people have gradually applied the technology of using dampers to absorb energy and absorb shocks to structural projects such as buildings, bridges, and railways. Disc spring dampers are widely used in seismic structures of various buildings due to their high impact resistance, low cost and good shock absorption effect. [0003] For the design of seismic structures of buildings, especially high-rise buildings, people pursue a comprehensive seismic performance that combines "resistance" and "loss", that is, under the action of weak wind vibration and small earthquakes...

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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