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A friction pendulum vibration isolation device with a vertical gravity tuning unit

A tuning unit and friction pendulum technology, applied in the field of friction pendulum isolation devices and vibration isolation devices, can solve the problems of high starting sensitivity, weak isolation effect, small residual displacement, etc., and achieve simple configuration, isolation amplitude and stability. Good, reduce the effect of residual displacement

Inactive Publication Date: 2020-10-09
INST OF ENG MECHANICS CHINA EARTHQUAKE ADMINISTRATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a stable shock-isolation device for pulse-type earthquakes, long-period earthquakes and other earthquakes with weak isolation effects of traditional shock-isolation devices, and the device has high starting sensitivity and low friction coefficient. Adjustable, small starting force, small residual displacement, especially suitable for the protection of precision equipment and cultural relics

Method used

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  • A friction pendulum vibration isolation device with a vertical gravity tuning unit
  • A friction pendulum vibration isolation device with a vertical gravity tuning unit
  • A friction pendulum vibration isolation device with a vertical gravity tuning unit

Examples

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Embodiment 1

[0047] Embodiment 1: as Figure 1 to Figure 10 as shown, image 3 The middle and upper boards have been shown transparently. A friction pendulum shock isolation device with a vertical gravity tuning unit described in this embodiment includes a vertical support part A, a gravity tuning part B, and a top shock-isolation friction pendulum C. The shock friction pendulum C includes an upper plate 1, a lower plate 2 and four shock-isolation units 3, and the shock-isolation unit 3 is placed between the upper plate 1 and the lower plate 2; the shock-isolation unit 3 includes a lower sliding part 31, a conversion sliding block 32 And the upper connection block 33, the three components are in contact with each other, and there is no fixing measure; the top surface of the lower sliding part 31 is a concave arc surface, and the concave arc surface is the sliding surface, and the conversion sliding block The bottom surface of 32 is a convex arc surface, and the concave arc surface and the...

Embodiment 2

[0048] Embodiment 2: The difference between this embodiment and Embodiment 1 is that it includes three shock-isolation units 3; the vertical support part A is surrounded by four pillars, and the cross-sectional shape of the pillars is square; the cross-section of the intermediate guide cylinder is Rectangular, the cross-section of the quality block is rectangular.

Embodiment 3

[0049] Embodiment 3: The difference between this embodiment and Embodiment 1 is that it includes five shock-isolation units 3; the vertical support part A is surrounded by five pillars, and the cross-sectional shape of the pillars is a regular polygon; the cross-section of the intermediate guide cylinder is a regular polygon, and the section of the quality block is a regular polygon.

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Abstract

The invention discloses a friction pendulum vibration isolation device with a vertical gravity tuning unit, and belongs to the technical field of vibration reduction and vibration isolation. The problems that in the prior art, starting sensitivity is low, the friction coefficient cannot adjusted, and start force is large are solved. The device can achieve stable vibration isolation on pulse type seismic motion, long-period seismic motion and seismic motion of other traditional vibration isolation devices weak in vibration isolation effect. According to the technical essentials, vibration isolation units are arranged between an upper plate and a lower plate; vertical supporting portions are fixedly supported on the ground, and the upper ends of the vertical supporting portions are mounted on the bottom face of the lower plate; and a gravity tuning portion is arranged in the vertical supporting portion, and the upper end of the gravity tuning portion is fixedly connected with the upper plate. Each vibration isolation unit comprises a lower sliding portion, a changeover sliding block and an upper connecting block, all of which are in contact, and no fixing measures are adopted. By means of the gravity tuning portion, the vibration isolation amplitude and stability of the device can be remarkably enhanced, the gravity tuning portion is only influenced by the radius of the frictionpendulum arc face, and the device is especially suitable for seismic protection of floating cultural relics, precision equipment and the like.

Description

technical field [0001] The invention relates to a vibration isolation device, in particular to a friction pendulum vibration isolation device with a vertical gravity tuning unit, and belongs to the technical field of vibration reduction and vibration isolation. Background technique [0002] Earthquake disasters are sudden and devastating, which seriously threaten the safety of human life and property. China is located between two major seismic belts - the Eurasian seismic belt and the circum-Pacific seismic belt, and is one of the countries most severely affected by earthquakes in the world. Historically, strong earthquakes of magnitude 6 or above have occurred many times in the Yangtze River Delta and the Pearl River Delta. In the Beijing-Tianjin-Bohai Rim region, in the past 300 years, an average of 7 magnitude or more earthquakes have occurred every 44 years. With the acceleration of urbanization, a large amount of national wealth is rapidly concentrated in cities and ur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B1/98E04H9/02
CPCE04B1/98E04H9/021
Inventor 柏文戴君武杨永强
Owner INST OF ENG MECHANICS CHINA EARTHQUAKE ADMINISTRATION
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