Device with complete seismic reduction and isolation functions

Abstract

The utility model relates to a device with complete shock reduction and isolation functions, which belongs to the technical field of building shock isolation, comprises a top cap, a middle swing body, a support column and four connecting rods, and is characterized in that the top cap consists of a circular platform and four ear edges connected to the edge of the circular platform, the middle position of the lower surface of the circular platform is an inwards concave arc surface, and the middle position of the lower surface of the circular platform is a concave arc surface. A transverse long through hole is formed in each lug edge; the middle pendulum body is a short cylinder of which the two bottom surfaces are convex arc surfaces; the upper end face of the supporting column is a concave arc face. The middle pendulum body is arranged on the supporting column, and the top cap is pressed on the middle pendulum body; the connecting rods are connected between the supporting columns and the lug edges through shock absorption dampers. The damping device has the advantages of being good in damping effect and capable of coping with various earthquake fluctuations; the problem of separation of the upper body and the lower body of a swing type support structure is solved; the damping performance of the device is enhanced by arranging the shock absorption damper, and the problem that a sliding support is difficult to reset after an earthquake is solved.

Description

Technical Field

[0001] This utility model relates to a device with both vibration reduction and isolation functions, belonging to the field of building seismic isolation technology. Background Technology

[0002] Earthquake isolation measures for buildings rely solely on seismic isolation bearings. Based on their damping motion, bearings can be categorized into two types: sliding bearings and pendulum bearings. Due to their different motion patterns, these two types of bearings offer different damping effects, effectively mitigating different wave patterns. Pendulum bearings significantly reduce the longitudinal component of wave motion, while sliding bearings ideally reduce the lateral component. However, in practical applications, the bearing location is fixed, while the earthquake's location is uncertain. This necessitates that bearings possess both pendulum and sliding functions to cope with seismic waves under various conditions. Currently, only sliding bearings are widely used in the market, while the application of pendulum bearings faces a significant technical challenge: ensuring the structure does not separate during pendulum motion, as separation would generate longitudinal forces, which can cause severe damage, especially in the epicenter. Therefore, an ideal bearing that can achieve both pendulum and sliding motion while remaining durable is a long-awaited goal and a technical challenge that is being actively researched and overcome both domestically and internationally.

[0003] CN 221941619 U discloses a sliding pendulum support with magnetic damping properties, which is the applicant's patent. This patent makes the middle sliding pendulum body of the pendulum support an isolation plate, allowing the support to slide during swinging and swing during sliding. It adds a magnetic damping effect to limit the support's lateral and longitudinal movement, avoiding direct impact. A constraint frame is designed to prevent and limit the separation of the support. However, in actual experiments, the patent has the following problems: the contact surface between the bottom surface of the isolation plate and the base is flat, making it difficult to return to its original position after horizontal sliding; horizontal sliding relies on strong magnetic damping, but the magnets only generate a strong magnetic force when close together, and the magnetic force is very weak when far apart, resulting in a large sliding amplitude of the isolation plate; the constraint frame is composed of plug-in rods and connecting rods, which, while providing constraint, lacks damping. Therefore, this patent cannot be applied in practice. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a device that can achieve both swinging and sliding, with good shock absorption effect and low cost, and complete shock absorption and isolation functions.

[0005] The present invention adopts the following technical solution:

[0006] This utility model includes a top cap, a middle swing body, a support column, and four connecting rods. The top cap consists of a circular platform and four lugs at equal intervals along the circumference, connected at obtuse angles to the edge of the circular platform. The lower surface of the circular platform has an inwardly concave arc surface in the center, and each lug has a transverse elongated through hole. The middle swing body is a short column with two convex arc surfaces at its bottom. The upper surface of the support column has a corresponding inwardly concave arc surface. The middle swing body is placed on the support column, and the top cap rests on top of the middle swing body. The connecting rods utilize shock absorbers. Four connecting bases are evenly spaced around the support column at the same height on the upper part of the column. One end of each connecting rod is connected to a connecting base using a universal joint, and the other end of the connecting rod is inserted into the elongated through hole of the corresponding lug. Connecting rod limiting plates, fixed to the connecting rods, are provided on both sides of the lugs, allowing the connecting rods to slide laterally relative to the lugs.

[0007] The intermediate pendulum body is a metal body or a rubber body.

[0008] A liner is provided on the arc surface of the circular platform and the upper end surface of the support column.

[0009] The liner is made of polytetrafluoroethylene (PTFE).

[0010] Four connecting hooks are evenly spaced on the same circumference of the circular platform. The lower end of each connecting hook is connected to a metal ring chain, and the other end of the metal ring chain is connected to a connecting rod.

[0011] The metal chain is in a relaxed state when there is no vibration.

[0012] The beneficial effects of this utility model are as follows: It integrates the functional advantages of pendulum bearings and sliding bearings, giving it an ideal seismic isolation and mitigation effect for both near and far earthquakes, and enabling the device to meet the basic conditions for coping with various seismic fluctuations; This utility model adds a constraint mechanism, solving the problem of upper and lower body separation in the structure of pendulum bearings; By configuring a damping device, not only is its damping performance enhanced, but the problem of difficult post-earthquake reset in sliding bearings is also solved. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model with a constraint frame;

[0014] Figure 2 yes Figure 1 Side view;

[0015] Figure 3 yes Figure 1 Top view.

[0016] In the diagram: 1-Circular platform; 2-Ear edge; 3-Connecting rod; 4-Connecting rod limiting plate; 5-Connecting base; 6-Supporting column; 7-Intermediate swing body; 8-Connecting hook; 9-Metal ring chain. Detailed Implementation

[0017] Referring to the accompanying drawings, this utility model includes a top cap, a central pendulum body 7, a support column 6, and four connecting rods 3. The top cap is made of concrete and consists of a circular platform 1 and four lugs 2 that are equally spaced around the circumference and connected to the edge of the circular platform at obtuse angles. The lower surface of the circular platform 1 has an inwardly concave arc surface in the middle, and a lining plate made of polytetrafluoroethylene (PTFE) with lugs is pasted on the arc surface. Each lug 2 has a transverse elongated through hole. The central pendulum body 7 is a short column with two outwardly convex arc surfaces at the bottom. The intermediate pendulum 7 is made of metal or rubber; the support column 6 is a concrete column, with a concave, slightly curved arc surface corresponding to the intermediate pendulum 7 on its upper surface. A lining plate made of PTFE with lugs is attached to the arc surface. The intermediate pendulum 7 is placed on the support column 6, with the top cap pressing on it, so that the intermediate pendulum 7 is positioned between the arc surface of the circular platform 1 and the arc surface of the intermediate pendulum 7. The connecting rod 3 uses a shock absorber, which can be a spring shock absorber or a hydraulic shock absorber. Four connecting bases 5 are provided at equal intervals around the column at the same height on the upper part of the support column 6. One end of each connecting rod 3 is connected to a connecting base 5 by a universal joint, and the other end of the connecting rod 3 is inserted into the elongated through hole of the corresponding lug 2. Connecting rod limiting plates 4, which are fixed to the connecting rod 3, are provided on both sides of the lug 2, allowing the connecting rod 3 to slide laterally relative to the lug 2. Four connecting hooks 8 are evenly spaced on the same circumference of the circular platform 1. The lower end of each connecting hook 8 is connected to a metal ring chain 9, and the other end of the metal ring chain 9 is connected to a connecting rod 3. The metal ring chain 9 is in a slack state when there is no vibration.

Claims

1. A device with comprehensive vibration reduction and isolation functions, comprising a top cap, a central pendulum body, a support column, and four connecting rods, characterized in that: The top cap is composed of a circular platform and four ear edges which are connected to the edge of the circular platform at an obtuse angle along the circumference at equal intervals, the middle of the lower surface of the circular platform is an inwardly concave circular arc surface, and a transverse elongated through hole is opened on each ear edge; the middle pendulum body is a short column with both bottom surfaces being outwardly convex circular arc surfaces; the upper end surface of the support column is an inwardly concave circular arc surface corresponding to the middle pendulum body; the middle pendulum body is placed on the support column, and the top cap is pressed on the middle pendulum body; the connecting rod adopts a shock damper, four connecting bases are arranged at equal intervals around the column at the same height on the upper part of the support column, one end of each connecting rod is connected with one connecting base by a universal joint, the other end of the connecting rod is inserted into the elongated through hole of the corresponding ear edge, connecting rod limiting plates are arranged on both sides of the ear edge and fixed with the connecting rod, and the connecting rod can slide transversely relative to the ear edge.

2. The device according to claim 1, characterized in that: The middle pendulum body is a metal body or a rubber body.

3. The device according to claim 1, characterized in that: Lining plates are arranged on the circular arc surface of the circular platform and the upper end surface of the support column.

4. The device according to claim 3, characterized in that: The lining plates are polytetrafluoroethylene plates.

5. The device according to claim 1, wherein the device is characterized by Four connecting hooks are arranged at equal intervals on the same circumference of the circular platform, and the lower end of each connecting hook is connected with a metal ring chain, and the other end of the metal ring chain is connected with a connecting rod.

6. The device according to claim 5, characterized in that: The metal ring chain is in a relaxed state when not vibrating.

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