An early disc spring damper with adjustable stiffness

Abstract

The invention discloses an early rigidity-adjustable disk spring damper. The early rigidity-adjustable disk spring damper is characterized in that a back pressure device is also arranged in a guide sleeve and is composed of two groups of preloading steel ropes, each group of which is composed of at least three preloading steel ropes, and two floating pressure plates, wherein the two groups of preloading steel ropes are symmetrically distributed in a center hole of a disk spring group about the axis of the guide sleeve in a straight line state; in addition, one ends of the preloading steel ropes in one group are fixed on the floating pressure plate adjacent to a drive component, and the other ends of the preloading steel ropes in one group penetrate through the floating pressure plate adjacent to a second end cover and are anchored on the second end cover through steel rope self-locking tensioning anchorages; one ends of the preloading steel ropes in the other group are fixed on the floating pressure plate adjacent to the second end cover, and the other ends of the preloading steel ropes in the other group penetrate through the floating pressure plate adjacent to the drive component and are anchored on the drive component through steel rope self-locking tensioning anchorages; and the two groups of preloading steel ropes are tensioned to always clamp the disk spring group between the two floating pressure plates.

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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