A counter-pressure disc spring damper with adjustable initial stiffness

Abstract

The invention relates to a counter pressure type disc spring damper with the adjustable initial rigidity. The damper is characterized in that a counter pressure device is arranged inside a guide sleeve and comprises more than three pre-compression steel wire ropes, steel wire rope deflecting components with the same number as the pre-compression steel wire ropes, a steel wire rope self-locking and tensioning anchorage device and a floating counter pressure steel plate; the pre-compression steel wire ropes are distributed in a center hole of a disc spring set in the mode of a zigzag line, one ends of the pre-compression steel wire ropes are symmetrically fixed to the floating counter pressure steel plate around the axis of the guide sleeve, the other ends of the pre-compression steel wire ropes are deflected back after penetrating through the opposite steel wire rope deflecting components, then all the pre-compression steel wire ropes are combined to form a rope strand, and the rope strand penetrates through the floating counter pressure steel plate from the point where the axis of the guide sleeve passes on the floating counter pressure steel plate and is anchored to a second end cover by the steel wire rope self-locking and tensioning anchorage device; and when the pre-compression steel wire ropes are tensioned to reach the tension needed by the preset initial rigidity, the disc spring set is always clamped between a drive component and the floating counter pressure steel plate.

Description

technical field [0001] The invention relates to a building anti-vibration (or vibration) device, in particular to a damping device including a disc spring. Background technique [0002] A damper is a device that dissipates the energy of motion by providing resistance to motion. Since the 1970s, dampers have been gradually transferred from industries such as aerospace, aviation, military, guns, and automobiles to structural engineering such as buildings, bridges, and railways. Disc springs are widely used in vibration isolation and shock absorption devices in various heavy-duty occasions due to their large load-bearing capacity, strong buffering and vibration-absorbing capacity, and wide range of nonlinear characteristics. Disc springs are usually combined into a disc spring group by multiple pieces, and different combination methods have different effects; however, no matter which method the disc spring group is composed of, it can only be compressed and deformed. Therefor...

AI Technical Summary

Problems solved by technology

[0005] 1. The load connecting rod is kept balanced under the joint action of two sets of disc springs. Although the pretightening 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, just applying any external force on the load connecting rod will destroy this balance and deform the two sets of disc springs, so the damper described above cannot preset the initial stiffness ;

[0006] 2. In this invention, two sets of disc springs must be used together to provide damping when the damper is under compression or tension load, which 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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