CN206554304U - A kind of simple ball vibration isolating suspension - Google Patents

Abstract

A simple ball vibration isolation bearing, mainly composed of upper and lower main steel plates and four middle steel plates, in which several high-strength steel balls are sandwiched between the steel plates, and each steel ball has a small contact surface with the upper and lower steel plates Spherical grooves to prevent the steel balls from being crushed; secondly, the upper and lower main steel plates and the connected steel plates are connected to each other with bolts to fix; and the upper and lower outermost main steel plates and the upper and lower innermost steel plates are connected by high-strength springs on all sides Limit excessive horizontal movement of the innermost steel plates; a layer of rubber is sandwiched between the innermost two steel plates to buffer seismic energy, and the asphalt mixture core is poured into it to increase the damping ratio, further absorbing seismic energy and acting The role of reset restore.

Description

A Simple Ball Vibration Isolation Bearing

technical field

The utility model belongs to the field of anti-seismic technology of civil engineering, in particular to a simple ball vibration isolation support.

Background technique

According to statistics, there are as many as 5 million earthquakes every year around the world, among which, there are nearly 20 strong earthquakes that cause serious damage on average, and about 2 devastating earthquakes. It can be seen that the world is in a period of highly frequent earthquakes, and in today's society, the trend of urbanization is increasing, and the urban population is increasing, and the corresponding buildings will inevitably increase, which will undoubtedly greatly increase the destructiveness of earthquakes. When an earthquake disaster occurs, the strong ground vibration will damage the structural components of the building, causing the building to fail to support its own weight and collapse, destroying the living space of human beings, threatening personal safety, and causing huge property losses to human beings.

Therefore, in recent years, with the continuous improvement of vibration isolation and shock absorption systems, basic seismic isolation technology has become a hot spot in the field of seismic research. At present, the main new types of isolation devices include laminated rubber isolation devices, friction-slip pendulum isolation devices, etc., and the most widely used is the laminated rubber bearing device. The creation and application of ball bearings are relatively few, and the use of balls is usually crushed due to friction, and the lateral displacement response is relatively large, so compared with rubber bearings, it has not reached a large area. The point where it can be widely used.

Contents of the invention

In order to overcome the deficiencies of the above-mentioned prior art, the purpose of this utility model is to provide a simple ball vibration isolation support to prevent the steel ball from being crushed and prevent the problem of excessive lateral displacement and failure under earthquake conditions. easy.

Or that purpose in order to realize, the technical scheme that the utility model adopts is:

A simple ball vibration isolation support, including the upper and lower main steel plates and the upper and lower middle steel plates, the upper and lower main steel plates are connected and fixed with the upper and lower middle steel plates through bolts, the upper and lower middle steel plates are provided with high-strength steel balls, and a layer of rubber is arranged between the upper and lower middle steel plates layer, the asphalt mixture is poured into the rubber layer.

A short spherical groove is provided between the upper and lower middle steel plates and the steel ball.

Both ends of the upper and lower main steel plates are connected to the upper and lower middle steel plates through high-strength springs.

The beneficial effects of the utility model are:

This solution prevents the steel ball from being crushed and prevents the problem of excessive lateral displacement and failure under earthquake conditions, which is simple and easy to implement.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Among them, 1 is the upper and lower main steel plates; 2 is the upper and lower middle steel plates; 3 is a steel ball; 4 is a spherical groove; 5 is a bolt; 6 is a high-strength spring; 7 is a rubber layer; 8 is an asphalt mixture.

detailed description

Below in conjunction with accompanying drawing, structural principle of the present utility model is described in detail.

As shown in Figure 1, a simple ball vibration isolation bearing includes the upper and lower main steel plates 1 and the upper and lower middle steel plates 2, the upper and lower main steel plates 1 and the connected upper and lower middle steel plates 2 are connected to each other with bolts 5 to fix, and the bolts provide Prestressing prevents large displacements between the two steel sheets. Among them, several steel balls 3 are sandwiched between the upper and lower middle steel plates 2, and the contact surface of each steel ball 3 and the upper and lower middle steel plates 2 has a small spherical groove to prevent the steel balls 3 from being crushed. The property of being able to roll enables the steel ball to move horizontally in the plane of the upper and lower middle steel plates 2 when an earthquake comes, so as to reduce the lateral horizontal force. And the upper and lower outermost main steel plates 1 are connected with the upper and lower innermost upper and lower middle steel plates 2 on all four sides with high-strength springs 6, so as to limit the innermost upper and lower middle steel plates 2 due to the external force of the earthquake level and the sliding of steel balls. produce large horizontal displacements. A rubber layer 7 is sandwiched between the two innermost upper and lower middle steel plates 2 to buffer seismic energy, and an asphalt mixture 8 is poured in to increase the damping ratio. The rubber layer is used to ensure that when the upper and lower middle steel plates 2 have a large displacement, it can absorb a certain amount of energy to a certain extent, reduce the lateral displacement, and can realize the reset of the upper and lower steel plates after the external force is removed, so as to realize the reset function of the support .

The working principle of the utility model is:

When the entire support system encounters the seismic horizontal force below, the upper and lower outermost steel plates 1 and 2 are fixed by bolts 5 to withstand the shaking and weight of the entire system;

Secondly, it is transmitted to the lower steel plate 2 and the ball 3 sandwiched in the middle. The steel ball slides in the horizontal plane to generate displacement under the action of external force, and the steel ball is restricted by the circular groove of each steel ball and the upper steel plate 2. The movement of the steel ball 3 drives the horizontal movement of the lower steel plate 2 in contact with it, and the spring 6 is used to prevent the steel plate 2 that produces displacement from generating a large horizontal force;

Again, the horizontal force is transmitted to the upper rubber 7, through which the asphalt mixture is poured to increase the damping ratio to further absorb the seismic energy and reduce the upward transmission, and can be restored by reset when the external force disappears after the earthquake.

Similarly, the role of the upper steel plate and the ball is the same as that of the lower part. When the earthquake force is large, it will be transmitted to the top to continue to achieve the effect of shock absorption and vibration isolation.

Claims (3)

1. a kind of simple ball vibration isolating suspension, including main steel plate up and down（1）With middle steel plate up and down（2）, it is characterised in that up and down Main steel plate（1）Pass through bolt（5）With middle steel plate up and down（2）It is interconnected and fixed, up and down middle steel plate（2）Provided with high strength steel Ball（3）, middle steel plate up and down（2）Between provided with one layer of rubber layer（7）, rubber layer（7）Inside pour into asphalt mixture（8）.

2. a kind of simple ball vibration isolating suspension according to claim 1, it is characterised in that described middle steel plate up and down （2）With steel ball（3）Between be provided with a bit of ball recess（4）.

3. a kind of simple ball vibration isolating suspension according to claim 1, it is characterised in that described main steel plate up and down（1） Two ends pass through high-strength spring（6）With middle steel plate up and down（2）Connection.