Three-dimensional shock isolation device with vertical initial stiffness capable of being preset

A technology of initial stiffness and vertical vibration isolation, applied in the direction of earthquake resistance, building components, building types, etc., can solve the problems of reducing the cost of vibration isolation, shortening the effective working length of the spring, incapable of stretching energy consumption and shock absorption, etc., to achieve buffer tension. Effects of tensile and compressive shocks, reduced wind and shock costs, and reduced risk of overturning

Pending Publication Date: 2017-04-19
NANJING DADE DAMPING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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 dissipation and shock absorption, but cannot be stretched for energy dissipation and shock absorption; 2. The spring isolation support cannot preset the initial stiffness, which is inconvenient to preset the seismic intensity and 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,

Method used

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  • Three-dimensional shock isolation device with vertical initial stiffness capable of being preset
  • Three-dimensional shock isolation device with vertical initial stiffness capable of being preset
  • Three-dimensional shock isolation device with vertical initial stiffness capable of being preset

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0038] see figure 1 , the three-dimensional seismic isolation bearing in this example is composed of laminated rubber isolation bearings and vertical isolation bearings connected in series up and down.

[0039] see figure 1 and Figure 4 , the laminated rubber shock-isolation bearing includes an upper connection plate 15, a lower connection plate 8, a laminated rubber pad 17 clamped between the upper and lower connection plates and six tensile steel wire ropes 16; wherein, the upper connection Both the plate 15 and the lower connecting plate 8 are disc-shaped, and the edge of the upper connecting plate 15 is provided with mounting holes 6; the main body of the laminated rubber pad 17 is alternately laminated by a layer of rubber 17-1 and a layer of steel plate 17-2. It is formed by molding vulcanization after being combined, and a rubber protection layer 17-3 is naturally formed around it during the molding vulcanization process. The upper and lower ends of the main body ...

example 2

[0053] see Figure 7-12 , on the basis of example 1, this example has mainly carried out the following improvements: (1) increasing the number of preloaded steel wire ropes 9 from three to six; (3) replace the eyebolt 10 of the other end of the fixed preloaded wire rope 9 with a wire rope self-locking anchorage 18; (4) thicken the middle part of the base 3 and bulge upward to form an inverted washbasin shape, so as to facilitate the installation of the wire rope self-locking anchor. Lock anchor 18; (5) correspondingly change described back pressure device into:

[0054] The back pressure device consists of six preloaded steel wire ropes 9, six U-shaped members 19 as wire rope direction changing elements, a floating back pressure steel plate 11, six eyebolts 10 for fixing one end of the preloaded steel wire ropes 9 and one fixed preloaded steel wire rope 9. The other end of the steel wire rope 9 is composed of a wire rope self-locking anchorage 18; wherein,

[0055] The float...

example 3

[0063] see Figures 13 to 17 , this example has mainly carried out following improvement on the basis of example 2: (1) replace the U-shaped member 19 as steel wire rope changing element with fixed pulley; (2) correspondingly change described back pressure device as:

[0064] The back pressure device consists of four preloaded steel wire ropes 9, four fixed pulleys 20 as wire rope direction changing elements, a floating back pressure steel plate 11, four fixed preloaded steel wire ropes 9, one eye screw 10 at one end and a fixed preloaded pulley. The steel wire rope self-locking anchorage 18 of steel wire rope 9 other ends forms. in,

[0065] The floating anti-pressure steel plate 11 is arranged between the cylindrical helical compression spring 4 and the base 3;

[0066] Four fixed pulleys 20 as steel wire rope changing elements fix the lower surface of the driving platen 7 symmetrically around the axis of the guide sleeve 1 and are located in the center hole of the cylindr...

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Abstract

The invention relates to a three-dimensional shock isolation device with the vertical initial stiffness capable of being preset. The three-dimensional shock isolation device comprises a vertical shock isolation support and a laminated rubber shock isolation support which are connected in series. The three-dimensional shock isolation device is characterized in that a back pressure device is further arranged in a guide sleeve of the vertical shock isolation support; the back pressure device comprises three or more prepressing steel wire ropes, steel wire rope turning elements and a floating back pressure steel plate, and the number of the steel wire rope turning elements is equal to that of the prepressing steel wire ropes; the prepressing steel wire ropes are in broken line states; one ends of all the prepressing steel wire ropes are symmetrically fixed to the floating back pressure steel plate around the axis of the guide sleeve, and the other ends of all the prepressing steel wire ropes are retraced after winding the corresponding steel wire rope turning elements in a penetrating mode, then are paralleled to be rope bundles to penetrate through the floating back pressure steel plate and are fixed to a base; and the prepressing steel wire ropes are tensioned to the tensile force required by the preset vertical initial stiffness, so that a cylindrical spiral compression spring is always clamped between a driving pressing plate and the floating back pressure steel plate.

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 ...

Claims

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Application Information

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IPC IPC(8): E04H9/02E04B1/98
CPCE04H9/021
Inventor 谢韩涛刘汶津韩磊张少华
Owner NANJING DADE DAMPING TECH CO LTD
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