Disc spring shock absorber with adjustable initial rigidity

Abstract

The invention relates to a disc spring shock absorber with adjustable initial rigidity. The disc spring shock absorber is characterized in that a back pressure device is arranged in a guide sleeve; the back pressure device comprises three or more prestressed steel wire ropes, steel wire rope turning elements equal to the prestressed steel wire ropes in number, steel wire rope self-locking tensioning anchors equal to the prestressed steel wire ropes in number and a floating back pressure steel plate; the prestressed steel wire ropes are distributed in a central hole of a disc spring set in a broken line mode; one end of each prestressed steel wire rope is symmetrically fixed to the floating back pressure steel plate around the axis of the guide sleeve, and the other end of the prestressed steel wire rope turns back after being wound across the opposite steel wire rope turning element, then penetrates through the floating back pressure steel plate from the position beside a fixing point, on the floating back pressure steel plate, of the prestressed steel wire rope, and is anchored to a second end cover through the corresponding steel wire rope self-locking tensioning anchor; and each prestressed steel wire rope is tensioned to the tension required for preset initial rigidity, and the disc spring set is made to be clamped between a driving component and the floating back pressure steel plate all along.

Description

Technical field [0001] The invention relates to a building anti-vibration (or shock) device, in particular to a damping device containing a disc spring. Background technique [0002] A damper is a device that consumes movement energy in a way that provides resistance to movement. Since the 1970s, dampers have been gradually transferred from industries such as aerospace, aviation, military industry, guns and automobiles to construction, bridges, railways and other structural projects. Disc springs are widely used in vibration isolation and damping devices for various heavy-duty occasions due to their large load-bearing capacity, strong cushioning and vibration absorption capabilities, and a wide range of nonlinear characteristics. Disc springs are usually composed of multiple pieces combined into disc spring groups, and different combinations have different effects; however, disc spring groups composed of either way can only be compressed and deformed. Therefore, the existing da...

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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