Three-dimensional shock isolation device capable of adjusting vertical early rigidity

Abstract

The invention discloses a three-dimensional shock isolation device capable of adjusting vertical early rigidity. The three-dimensional shock isolation device comprises a layered rubber shock isolation support base and a vertical shock isolation support base which are in sequential up-down series connection. The three-dimensional shock isolation device is characterized in that a reverse pressing device is arranged between two end plates of the vertical shock isolation support base, and comprises two pre-pressing steel cables and two floating press plates; the floating press plates sleeve a guide rod between one end plate and a disc spring set; the pre-pressing steel cables are symmetrically distributed around the disc spring set in a linear state by winding the axis of the guide rod; one end of each pre-pressing steel cable is fixed to one floating press plate, and the other end of each pre-pressing steel cable penetrates the other floating press plate to be fixed to the end plate adjacent to the floating press plate; each pre-pressing steel cable is strung with a rigging turnbuckle; the pre-pressing steel cables are tensioned to enable the disc spring set to be constantly clamped between the two floating press plates.

Description

technical field [0001] The invention relates to a building anti-vibration (or shock) device, in particular to a three-dimensional shock-isolation device in which a sandwich steel plate rubber pad is connected in series with a vertical shock-isolation support. Background technique [0002] The seismic isolation device is an anti-seismic isolation device installed between the building and the foundation. The early seismic isolation devices were mainly two-dimensional isolation bearings (laminated rubber isolation bearings) composed of rubber and thin steel plates alternately laminated, which could only isolate the horizontal component of seismic waves. With the improvement of people's understanding of the multi-dimensional characteristics of earthquakes, three-dimensional seismic isolation devices have gradually attracted the attention of researchers in this field. The most common three-dimensional isolation device is composed of laminated rubber isolation bearings connected ...

AI Technical Summary

Problems solved by technology

Although the scheme described in this patent application can improve the tensile strength of the three-dimensional seismic isolation device to resist the huge tension generated by the swaying or even overturning of high-rise buildings in an earthquake, the following deficiencies still exist: 1. The spring isolation The support can only be compressed for energy consumption and shock absorption, but cannot be stretched for energy consumption and shock absorption; 2. The spring isolation support cannot preset the early stiffness, which is not convenient for presetting the seismic intensity to reduce the cost of isolation

However, this invention still has the following disadvantages: 1. The load connecting rod is balanced under the joint action of two groups of disc springs. Although the preload of the two groups of disc springs can be adjusted, no matter how they are adjusted, the The force of the disc spring on the load connecting rod is 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. Therefore, the 2. In this invention, two sets of disk springs must be used together to provide damping when the damper is under compression or tension load, which not only causes a certain waste, but also makes the damper greatly increased in length

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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