KR101972735B1 - vibration isolation device - Google Patents

Abstract

The present invention relates to a vibration isolation device and, more specifically, relates to a vibration isolation device to minimize earthquake damage by minimizing shaking of a structure, equipment, or the like installed in an upper portion of the vibration isolation device in case of an earthquake, and enabling a shaking structure, equipment, or the like to return to an original position within a short time. To achieve this, according to the present invention, the vibration isolation device comprises: plates provided in upper and lower portions of the vibration isolation device; a steel ball provided between the plates; and a sensor provided at one side of the vibration isolation device, wherein each of the plates is coupled to face each other at right angles.

Description

Vibration isolation device

More particularly, the present invention relates to a seismic isolation device, and more particularly, to a seismic isolation device capable of minimizing shaking of a structure or equipment installed on an upper portion of a seismic isolation device and returning a shaken structure or equipment to an initial position within a short time, So as to minimize damage.

The phenomenon that the energy inside the earth comes out to the surface and the ground is shaken and shakes is called an earthquake. The principle of this earthquake is elastic rebound. Strata are warped and change their shape when they receive power. Then, when the forces that can not be sustained are accumulated, the stratum is broken and becomes a fault, and an earthquake occurs due to repulsive force to return to its original shape.

Most earthquakes are caused by large forces within the earth that affect the continent's movement, expansion of the sea floor, formation of mountains, etc. over a long period of time. In addition, earthquakes occur due to volcanic activity, but the scale is relatively small in this case. In addition, earthquakes can occur artificially by explosives.

Earthquakes are divided into tectonic earthquakes, volcanic earthquakes, and implosions or collapse earthquakes depending on the type and cause of the earthquake. Earthquake focus is the point where energy is generated, which is the cause of this earthquake, and epicenter is the ground surface vertically connected to the epicenter. The epicenter is the closest index to the epicenter, which causes the greatest damage.

Earthquakes range in size from small-scale faults of several centimeters in length to a few meters in length, which are caused by large-scale faults with a few m displacement. The damage of the earthquake is mainly caused by the sudden vibration of the ground during the propagation of the seismic waves. Ground accelerations due to large-scale earthquakes exceed 1 g. The size of the earthquake is indicated by magnitude (M) according to the magnitude of the seismic energy.

The equation below is the relationship between scale M and energy E (erg).

log E = 12.24 + 1.44 M

According to the above equation, the magnitude of an earthquake increases by 25 to 30 times as a unit increases. The magnitude of an earthquake that you can usually feel is over 2.0, and the earthquake that causes the most damage is usually above 6.0. The seismic intensity is a measure of the magnitude of ground vibration and its consequences at a point on the surface. Therefore, the magnitude of an earthquake of the same magnitude varies with location. Progression generally decreases with distance from the epicenter, and its value pertains to various factors besides scale.

Intensity and magnitude are used as a measure of earthquake magnitude.

The magnitude is the amount associated with the wave energy emitted when an earthquake occurs and is a fixed amount for a specific earthquake such as the epicenter of an earthquake, depth of epicenter, time of occurrence, and so on. Normally, when talking about an earthquake, it determines the epicenter, depth of epicenter, time of occurrence and scale.

On the other hand, the magnitude is a measure of earthquake size, based on the effects of earthquakes, ie, the effects on buildings and terrain. Therefore, the same earthquake has a large value near the epicenter and a small value at a far distance.

In alluvial soils and landfills, the magnitude of the magnitude is larger than that of the shallow soil layer or the bedrock zone.

The progress indicator is usually used by the Japanese Meteorological Agency (JMA) and the American Modified Mercalli (MM) progress rank. The MM progression class is divided into 12 classes in the earthquake class, and 8 classes in the JMA progress class. Korea uses the JMA progress class and the US MM class in 2001.

This magnitude class determines the strength of a small earthquake according to the extent to which a person responds, and when a large earthquake occurs, it determines the strength of the earthquake according to the damage level of the building.

The MM progress rank is divided as follows.

Progress 1 - None.

Progress 2 - A delicate object hangs.

Progress 3 - The vehicle stopping is slightly shaken, and the vibration and duration of the truck are calculated.

Progress 4-The bowl, the windows, the doors are shaking and the wall is cracked, the large truck gives the feeling of receiving the wall, the stationary car shakes clearly.

Progression 5-The bowl and the window may be broken, and an unfixed object may fall.

Progress 6- Heavy furniture moves and cracks in building walls.

Grade 7 - Damage can be neglected in a well-designed and well-constructed building. However, a slight damage occurs in a normal building, a considerable damage occurs in a bad building, and a chimney collapses.

Shindo 8- Some damage to specially designed buildings, partial damage to general buildings, severe damage to buildings, collapse of products, chimneys, pillars, monuments, bricks.

Jindo 9- Significant damage to specially designed buildings, partial collapse of solid buildings, cracks on the ground surface, damage to underground water pipes.

Progress 10- Most buildings collapse along with foundation, severe cracks on the surface, railroad bends and landslides.

Progress 11- There are few remaining buildings, extensive cracks on the ground surface, subsurface subsidence, and heavy rail bending.

Progression 12 - All-round destruction, waves on the surface, twisting in the horizontal plane, and objects thrown into the sky.

According to the MM progress rank, the human body is hardly sensitive to earthquakes at a magnitude of 3 or below, and only a sensitive person responds to an earthquake. When the magnitude of the MM magnitude exceeds 4, it appears that an abnormality occurs in a building or the like.

In order to solve such a problem, the present applicant has attempted to solve a technical problem by describing contents of a seismic isolation device responding to an earthquake of a predetermined magnitude or more described in Patent Publication No. 10-0971365 (hereinafter referred to as "Prior Art 1") .

However, since the above-described prior art 1 is formed only along the longitudinal direction of the lower plate, it takes a lot of time to return to the initial position after the displacement of the horizontal movement is caused by the earthquake, There is a problem that the position of the plate is stopped in a state where it deviates from the original initial position.

Further, since the flow preventive portion is formed on the lower plate and the weak flow preventing groove is formed on the upper plate, it is troublesome to separately provide the upper plate and the lower plate when installing the seismic isolator.

KR 10-0971365 B1

SUMMARY OF THE INVENTION The present invention has been conceived to solve the above-mentioned problems, and its object is to minimize the shaking of a structure or equipment installed on an upper part of a seismic isolation device when an earthquake occurs, Position of the earthquake, thereby minimizing earthquake damage.

In addition, since the flow preventing portions and the flow preventing grooves are symmetrically formed in the upper, lower, left, and right directions with respect to the plane of the plate, the same plates are mutually reversed only when the seismic isolation device is installed, There is another purpose in providing the device.

It is another object of the present invention to provide a seismic isolation device capable of promptly responding to an earthquake by providing a seismic sensor with a sensor for detecting the occurrence of an earthquake.

In order to achieve the above-mentioned object, the present invention provides a splitter for splitting a splitter, comprising: a plate constituting upper and lower parts of the splitter; a fluid section formed on the plate; A steel ball provided; And a flow preventive portion formed on the plate, the flow preventive portion including a flow preventive protruding portion and a flow preventive groove, and the flow preventing portion is formed with a release preventing groove.

Further, each of the upper and lower plates has four flow portions.

The moving part may further include a bent part formed to be inclined downwardly toward the center of the flow part and a separation preventing part formed along the outer circumference of the flowing part.

Each of the upper and lower plates has two flow preventing protrusions and two flow preventing grooves formed on the upper and lower plates, respectively. The two flow preventing protrusions are located on opposite sides of the center axis of the plate, And the two flow preventing grooves are formed to face each other with respect to the central axis of the plate, wherein one of the upper and lower plates is rotatably coupled to the other plate at a right angle.

The flow preventive protrusion may include a flow preventive ball inserted into a guide groove formed in the plate, a tongue spring elastically supporting the flow preventive ball, And a first fixing piece for fixing the first fixing piece.

In addition, the flow preventing portion is formed at a portion of the space between the moving portion of the plate and the other flow portion, adjacent to the outside of the plate.

In addition, the plate is provided with a lattice-shaped support portion for supporting a vertical load of a structure or equipment placed on the seismic isolation device, and the support portion is protruded at the same height as the plate.

Also, the flow portion is formed to have a diameter of 150 to 190 mm, and the radius of curvature of the bent portion is formed to be 950 to 1050 mm.

In addition, a sensor for sensing and transmitting an earthquake may be provided on one of the side surfaces of the plate. The sensor may include a vibration sensing unit, and a vibration sensor The present invention has been made to solve the technical problem to be solved by the present invention.

According to the seismic isolation device of the present invention, it is possible to minimize the shaking of the structure or equipment installed on the upper part of the seismic isolation device when an earthquake occurs, and to return the shaken structure or equipment to the initial position in an early time, .

In addition, since the flow preventing portions and the flow preventing grooves are symmetrically formed in the upper, lower, left, and right directions with respect to the plane of the plate, the same plates are mutually reversed to each other at the time of installing the seismic isolation device, .

Further, the seismic isolation device is provided with a detection sensor for detecting the occurrence of an earthquake, so that it is possible to promptly cope with an earthquake.

1 is a perspective view of an isolation device according to the present invention;
2 is an exploded perspective view of a seismic isolation device according to the present invention.
3 is an exploded perspective view of the first plate of the present invention.
Figure 4 is a top view of the plate of the present invention
5 is a sectional view taken along the line A-A 'in Fig. 1

The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary meanings and the inventor can properly define the concept of the term to describe its invention in the best possible way And should be construed in accordance with the principles and meanings and concepts consistent with the technical idea of the present invention.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and are not intended to represent all of the technical ideas of the present invention. Therefore, various equivalents And variations are possible.

Before describing the present invention with reference to the accompanying drawings, it should be noted that the present invention is not described or specifically described with respect to a known configuration that can be easily added by a person skilled in the art, Let the sound be revealed.

3 is an exploded perspective view of a plate 100 according to the present invention, and Fig. 4 is an exploded perspective view of the plate 100 according to the present invention. Fig. 1 is a cross-sectional view taken along the line A-A 'in Fig.

As shown in FIGS. 1 to 4, the isolation device 10 of the present invention includes a plate 100 formed on upper and lower sides, a moving part 120 formed on the plate 100, A steel ball 200 provided at the moving part 120 between the plates 100 formed at the lower part and a sensor 300 provided at one side of the seismic isolation device 10.

The plate 100 may be divided into an upper plate 101 and a lower plate 102 depending on positions of the upper plate 101 and the lower plate 102, Of course, have the same configuration.

 The structure of the upper plate 101 is such that a structure or equipment is placed so that a structure or equipment is not displaced by a horizontal movement when an earthquake occurs. The lower plate 102 is fixed to a foundation such as a ground, As shown in FIG.

The structure or equipment provided on the upper plate 102 may include various structures or equipment that may be damaged due to the occurrence of an earthquake, including information / communication equipment, computer equipment, and expensive equipment such as electric power equipment .

The plate 100 is provided with a support part 110 protruding at a predetermined interval in a lattice shape and the support part 110 is formed on one side of the plate 100.

The supporting portion 110 may protrude to the height of the plate 100 so as to sufficiently support the vertical load of the structure or the equipment placed on the base 10.

2 and 3, the plate 100 is formed with a plurality of moving parts 120 having a predetermined pattern with respect to the center of the plate 100, A bending portion 123 formed to be inclined downwardly toward the central portion of the moving portion 120 and a separation preventing bore 121 formed along the outer circumference of the moving portion 120 and an inner peripheral portion of the moving portion 120, (Not shown).

The release preventing tuck 121 is formed on the outer side of the moving part 120 to prevent the steel ball 200, which will be described later, from being separated from the moving part 120.

The release preventing groove 122 is formed on the inner side of the moving part 10 so that the steel ball 200 can freely move within the moving part 120, When the ballast water flows over a radius of the moving part 120 due to a large earthquake, the flow of the steel ball 200 is primarily attenuated by the separation preventing groove 122, The steel ball is finally restricted in the movement of the release preventing groove 122 to prevent the release from the release preventing groove 122.

According to the weight of the structure or equipment mounted on the seismic isolation device and the design conditions of the seismic isolation device, the separation prevention grooves 122 may be formed in the plurality 122 may be formed in a wide range from the position that is one third point in the direction of the center of the moving part 120 to the direction of movement from the release preventing tuck 121, which is the outer side of the moving part, It is most preferable that it is formed between the separation preventing tuck 121 and the point 1/10 in the direction of the center of the moving part 120.

More specifically, when the steel ball 200 flowing in the moving part 120 flows to the separation preventing jaw 121 by a large earthquake, So that the steel ball 200 is prevented from being separated from the separation preventing boss 121 by the second bending of the separation bushing 121, So that it is prevented from being detached from the separation preventing chin 121.

The steel ball 200 can be moved only within the separation preventing groove 122 when an earthquake of a low magnitude is generated so that the steel ball 200 does not leave the separation preventing jig 121 So that the swing of the structure or equipment installed on the upper part of the isolation device is minimized.

That is, in the seismic isolation device 10 according to the present invention, by forming the escape prevention groove 122, even when an earthquake having a high degree of magnitude capable of separating the steel ball 200 from the escape prevention threshold 121 occurs, So that the structure or the equipment installed on the upper part of the isolation device can be prevented from falling.

In the meantime, the plate 100 has a square planar shape and four planar portions 120 are formed on a plane. When a structure or equipment installed on an upper portion of a seismic isolation device is shaken when an earthquake occurs, The shaking range is minimized so as to prevent collision with other adjacent structures or equipment to prevent damage to the structure or equipment.

The upper plate 101 and the lower plate 102 are provided with two flow preventing protrusions 130 and flow preventing grooves 140 respectively and the two flow preventing protrusions are formed on the upper plate 101 or The two flow preventive grooves are formed to face each other with respect to the center axis of the upper plate 101 or the lower plate 102. [

The flow prevention protrusions 130 and the flow prevention grooves 140 may be formed in a space between the fluid part 120 and the other fluid part 120 which is an intermediate portion of the outer surface of the plane of the plate 100 Do.

The flow preventive protrusion 130 includes a flow preventive ball 133 inserted into the guide groove 131 formed in the plate 100 and a tongue spring 132 elastically supporting the flow preventive ball 133, And a first fixing piece 134 that is coupled to the guide groove 131 by a screw 135 to fix the position of the flow prevention ball 133. The flow prevention groove 140 is formed in the guide groove 131, And the second fixing piece 141 having the ball guide portion 142 is coupled to the groove 131 by a screw 135.

That is, the anti-flow ball 133 of the anti-flow protrusion 130 protrudes at a predetermined distance from the surface of the plate 100, and the ball guide 142 of the anti- The flow preventing protrusion 130 and the flow preventing groove 140 are formed to be in contact with the protruding portion of the flow preventing ball 133 to form the flow preventing portion 150.

That is, when the square top plate and the bottom plate are combined to constitute one isolator as in the present invention, the flow preventing protrusion 130 and the flow preventing groove 140 are formed to be vertically coupled to each other, Flow preventing portion 150 is formed.

Therefore, the four flow restricting units 150 are formed by vertically coupling the flow preventing protrusions 130 and the flow preventing grooves 140, respectively.

This is because the flow between the upper plate 101 and the lower plate 102 is reduced by the flow preventing portion 150 when the earthquake occurs and flow is generated in the seismic isolation device 10 and the seismic isolation device 10 So that the return to the initial position can be performed more quickly.

That is, when the flow preventing portion 150 is not formed or only two flow preventing portions are formed as in the prior art, the return of the seismic isolation device 10 to the initial position is not performed. However, When the flow prevention part 150 is formed on each outer surface of the plate 100 of the base plate 100, the base plate 10 is accurately returned to its initial position, It is preferable that the flow preventing protrusion 130 and the flow preventing groove 140 are formed in the space between the flow portion 120 and the flow portion 120 which are the center portions of the outer side surfaces.

In order to reduce the flow of the seismic isolation device 10 and smooth return to the initial position of the after-flow seismic device 10, the diameter of the flow preventive protrusion 130 and the flow preventive groove 140 should be maximized The flow preventing protrusions 130 and the flow preventing grooves 140 are formed in the square plate 100 according to the present invention such that the flow portions 120 and the center portions of the outer side surfaces of the plates 100, Since the diameter of the flow prevention protrusions 130 and the flow prevention grooves 140 can be maximized when the flow prevention protrusions 130 and the flow prevention grooves 140 are formed in the space between the flow portions 120 and the flow portions 120, It is preferable to form the flow preventing portion 130 and the flow preventing groove 140 in the space between the first and second flow paths 120.

4, the flow prevention protrusions 130 are formed at the central portions of the upper and lower outer side surfaces, and the flow prevention grooves 140 are formed in the plate (not shown) The upper and lower flow prevention protrusions 130 and 130 are formed to face each other with respect to the center horizontal axis of the plate so that the left and right flow prevention grooves 140 and the right flow prevention groove 140 are formed to face each other with respect to the central longitudinal axis of the plate.

When the two plates 100 are coupled to each other to constitute the seismic isolation device, when one of the plates is used as a lower plate and the other plate is coupled by turning so as to be perpendicular to the lower plate, And the flow prevention groove 140 are coupled to each other to form a flow prevention portion.

In other words, by manufacturing the upper plate and the lower plate in the same manner without manufacturing the upper plate and the lower plate separately, it is possible to reduce manufacturing cost, and in addition, It is possible to transport the plate to the construction site without distinguishing between the plate and the lower plate, and there is no need to separate the upper plate and the lower plate from each other and thus shorten the construction time.

Also, as described above, the flow preventing protrusions formed on each plate are configured to be coupled to the flow preventing grooves 140 of each of the flow preventing grooves 140, And the flow restricting portion formed of the flow preventive protrusion 130 and the flow preventive recess 140. The flow restricting protrusion 130 and the flow preventive recess 140 prevent the flow of the seismic device 10 from returning to the initial position And it is advantageous that each of the plates 100 that have been flown is correctly returned to the initial position.

For this purpose, the plate 100 may be formed in a square shape, and the size of the plate 100 may be varied depending on the size of the structure or equipment mounted on the isolation device 10.

The plate 100 is provided with four moving parts 120. The diameter of the moving part 120 is preferably 150 to 190 mm according to the size of the plate 100, When the diameter of the moving part 120 is less than 150 mm, it is impossible to sufficiently accommodate the vibration of the structure or equipment caused by the earthquake of the magnitude 7 or more. When the diameter of the moving part 120 exceeds 190 mm , Interference may occur between the respective flow portions 120 due to the maximum size limitation of the plate 100, which is manufactured to be applied to a general structure or equipment.

The steel ball 200 is provided between each of the moving parts 120 formed in the seismic isolation device 10 so that the plates 100 are separated from each other at a predetermined interval .

That is, when the plate 100 is moved horizontally due to an earthquake, horizontal movement of the steel ball 200 to the plate 100 provided at the upper portion is restricted by the rolling motion of the steel ball 200, So that the structure or equipment placed in the seismic isolation device 10 is prevented from being damaged by an earthquake.

Meanwhile, the sensor 300 is provided at one end of the plate 100 so that when the vibration is detected by the seismic isolation device 10, that is, when an earthquake occurs, the sensor 300 is notified to the emergency communication network .

To this end, the sensor 300 includes a vibration sensing unit (not shown) and a notification unit (not shown) notifying the vibration sensing unit of the vibration sensed by the vibration sensing unit.

Referring to FIG. 5, the bending portion 123 of the moving unit 120 will be described in more detail as follows.

5, a steel ball 200 is provided at each bent portion 123 of the plate 100 to be coupled to the upper and lower portions, and the steel ball 200 is inserted into the moving portion 120 So that each plate 100 is allowed to flow only within a certain range.

At this time, the degree of curvature of the bending portion 123, that is, the radius of curvature R is 950 to 1050 mm, preferably 1000 mm.

When the radius of curvature of the bent portion 123 is less than 950 mm, it is difficult to offset the shaking of the structure due to the excessive flow of the steel ball 200. When the radius of curvature of the curved portion is 1050 mm The possibility of stably supporting the structure placed on the upper portion of the seismic isolation device 10 due to the insufficient flow of the steel ball 200 provided between the fluidic segments 120 .

Thus, in the seismic apparatus according to the present invention, the diameter of the steel ball and the flow-preventive ball, which flow in the bent portion of the flow portion, may be limited according to the preferable size of the curvature radius of the bent portion.

That is, the steel ball and the anti-flow ball are related to the distance between the plate provided at the lower part and the plate provided at the upper part. When the distance between the plates is increased, If the distance between the plates is reduced, interference between each of the plates may occur, thereby failing to properly perform the function of the isolation device.

Therefore, it is preferable that the size of the flow-preventive ball and the steel ball are formed according to the distance between the plates and the radius of the bend, and when the radius of curvature of the flow portion is 1000 mm, It is most preferable that the balls are formed at a ratio of 1: 17/16.

Experimental Example 1 Measurement of change in return position and return position of initial position of an isolation device according to the number of flow prevention portions

In order to perform an earthquake-proof test of the seismic isolation device of the present invention, the seismic isolation device was fixed to the vibration table with a bolt, and then a lag was provided on the seismic isolation device 10.

Seismic Simulationg System equipment was used for the earthquake test facility, and digital control system was used. RS Modulogic system was used for the control program.

In order to measure the displacement of the rack during the earthquake test, the cable-extension position transducer used Celesco MT2A-30E-9-10 K-MI.

The earthquake test was conducted by using a three-axis (x, y, z) simultaneous landing signal, and an earthquake test was performed until the impact signal of the seismic isolation device 10 was generated by adding a strength of 0.6 g using Kobe earthquake , The time required for returning to the initial position of the seismic isolation device, the initial position of the seismic isolation device, and the change of the return position after the seismic test were measured.

Example 1

And the flow preventing portions formed by combining the flow preventing protrusions and the flow preventing grooves on the plate are formed symmetrically so that four flow preventing portions are formed in one isolator.

Comparative Example 1

In the configuration of the first embodiment, the two flow preventing portions are formed in one isolator.

Comparative Example 2

In the configuration of the first embodiment, the flow restricting portion is not formed in the seismic isolation device.

The data obtained through Experimental Example 1 are shown in Table 1 below.

Example 1 Comparative Example 1 Comparative Example 2 Number of flow prevention parts 4 2 none Return Time (sec) 0.98 20 40 Return position change Match initial position Diagonally
10mm difference Horizontally
50mm difference

As can be seen from Table 1, in the case of the embodiment in which one flow restricting device is formed with four flow restricting portions, the return time to the initial position is 0.98 seconds, and in the case of Comparative Example 1 in which the flow- And the recovery time to the initial position was 40 seconds in Comparative Example 2 in which no flow preventing portion was formed.

This is because when the seismic force is generated and the flow of the isolation device occurs, the movement of the plate provided at the upper and lower portions of the flow prevention portion is reduced, so that the return to the initial position is made faster.

The initial position of the seismic isolation device and the return position after the earthquake test were identical to each other. In the embodiment, the initial position and the return position coincided with each other. However, in Comparative Example 1 and Comparative Example 2, the diagonal line is 10 mm and the left- It is judged that the upper and lower left and right directions of the plate positioned at the upper part and the plate positioned at the lower part are fixed by the flow prevention part and the flow prevention groove provided at the upper, lower, left, and right sides.

Experimental Example 2. Measurement of displacement displacement in x and y direction of each plate according to radius of curvature and measurement of return to original state

In Experimental Example 2, in order to measure the movement displacement in the x and y directions of each plate according to the radius of curvature, and to measure the return to the original state, the movement displacement in the x and y directions and the return to the original state were measured in units of 50 mm from a radius of curvature of 850 mm to 1100 mm The results are shown in [Table 2].

The test method was the same as in Example 1, except that only the strength of the seismic test was added in an amount of 1.3 g, and the displacement displacements in the x and y directions of the upper plate and the lower plate of the isolator according to the radius of curvature were measured.

Radius of curvature
(mm) 850 900 950 1000 1050 1100 x axis
Moving displacement
(mm) Steel ball exit Steel ball exit 128 120 125 140 y axis
Moving displacement
(mm) Steel ball exit Steel ball exit 148 140 145 150 Reinstatement
Whether Not measurable Unaccountable Reinstatement Reinstatement Reinstatement Reinstatement
no

As can be seen from the above Table 2, when the curvature radii are 950 mm, 1000 mm and 1050 mm, the displacement displacements in the x and y axes are 150 mm or less, respectively, It is possible to sufficiently accommodate the shaking of the structure or equipment caused by the structure or equipment, and the structure or equipment can be stably supported.

On the other hand, in the case of the radius of curvature of 1100 mm, the displacement of the x-axis and the y-axis was small, but the restoration did not occur to the original state. As the radius of curvature increases, the curvature becomes flat, It can be concluded that it is not done smoothly.

In addition, in the case of the radius of curvature of 900 mm and 850 mm, the deviation of the steel ball, that is, the ball deviation phenomenon occurred, and it was not possible to measure the return to the original state due to the ball deviation phenomenon.

As the radius of curvature becomes smaller, the curvature of the curvature increases, and it is considered that the steel ball is excessively actively flowing.

Therefore, the radius of curvature radius of curvature of the flow portion is set to 950 to 1050 mm so that the moving displacement between the x-axis and the y-axis is made within 150 mm, and smooth return to the original state is achieved.

According to the seismic isolation device 10 of the present invention, it is possible to minimize the shaking of a structure or equipment installed on the upper portion of the seismic isolation device 10 when an earthquake occurs, to allow the shaken structure or equipment to return to the initial position within a short time, It is possible to minimize earthquake damage.

In addition, a plurality of the flow preventing portions 130 and the flow preventing grooves 140 are formed in the seismic isolation device 10 so that the load of the structure or the equipment is appropriately dispersed, thereby enabling stable support.

In addition, the seismic isolation device 10 is provided with the detection sensor 300 for detecting the occurrence of an earthquake, so that the earthquake can be promptly counteracted.

Although the present invention has been described with reference to the drawings, it should be understood by those skilled in the art that the present invention is not limited to the embodiments and drawings disclosed herein, It goes without saying that various modifications can be made.

10: Isolation device 100: Plate
101: upper plate 102: lower plate
110: support part 120:
121: a release preventing chuck 122: a release preventing groove
123: bent portion 130:
131: guide groove 132: tangential spring
133: anti-flow ball 134: first fixing piece
135: screw 140:
141: second fixing piece 142: ball guide portion
150: flow prevention part 200: steel ball
300: sensor

Claims (10)

A seismic isolation device installed to reduce earthquake damage,
In the seismic isolation device,
A plate constituting upper and lower portions of the isolation device;
A moving part formed on the plate;
A steel ball provided in the moving portion between the upper and lower plates; And
And a flow preventive portion formed on the plate and composed of a flow preventive protruding portion and a flow preventive groove,
A release preventing groove is formed in the moving portion,
The separation preventing groove is formed between a position that is 1/3 of the direction of the center of the flow portion and a position of 1/10 of the direction of the center of the flow portion,
Wherein the upper and lower plates have the same shape of a square shape,
Each of the upper and lower plates has two flow preventing protrusions and two flow preventing grooves. The two flow preventing protrusions are formed to face each other with respect to the central axis of the plate. Wherein one of the upper and lower plates is rotatably coupled to the other plate at a right angle,
Wherein the plate is provided with a lattice-shaped support portion for supporting a vertical load of the structure or equipment placed on the base plate, and the support portion is formed to protrude at the same height as the plate.
The method according to claim 1,
Wherein four flow portions are formed on each of the upper and lower plates.
The method according to claim 1 or 2,
In the above-
A bent portion formed to be inclined downward toward the central portion of the flow portion,
Further comprising a separation preventing edge formed along the outer circumference of the flow portion.
delete The method according to claim 1,
The flow-
A flow preventive ball inserted into a guide groove formed in the plate,
A tangential spring for elastically supporting the anti-flow ball,
And a first fixing piece that is screwed to the guide groove and fixes the position of the anti-flow ball.
The method according to claim 1,
Wherein the flow restricting portion is formed at a portion of the space between the fluid portion of the plate and the other fluid portion adjacent to the outside of the plate.
delete The method of claim 3,
The flow portion is formed with a diameter of 150 to 190 mm,
Wherein a curvature radius of the curved portion is formed to be 950 to 1050 mm.
The method of claim 3,
Wherein a sensor for sensing and transmitting an earthquake is provided on one of side surfaces of the plate.
The method of claim 9,
The sensor includes:
And an informing unit for informing an emergency communication network when vibration is detected in the vibration detecting unit.

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