KR102495726B1 - A seismic isolator equipped with non-contact displacement control unit - Google Patents

Abstract

The present invention relates to a seismic isolator having a non-contact displacement control unit, which can prevent impacts from being applied to a facility. To this end, the seismic isolator having a non-contact displacement control unit comprises: a base plate which is fixed to a bottom surface; a horizontal displacement plate which is connected to the base plate through the medium of sliding coupling means to have biaxial horizontal freedom; and a vertical displacement plate which is fixed to a bottom surface of a facility and is connected to the horizontal displacement plate through the medium of a vertical displacement control unit. A horizontal displacement control unit, which elastically restricts the biaxial freedom of the horizontal displacement plate for restoring a location, is further connected to the sliding coupling means. A non-contact displacement control unit, which can respond to and offset a large displacement of 1 Hz or less transmitted to the horizontal displacement plate, is further mounted on the base plate or an edge of the horizontal displacement plate. The non-contact displacement control unit is linked to the horizontal displacement control unit by coming in contact with the sliding coupling means to offset large displacement when the large displacement exceeds a location restoration acceptable value (1 Hz or less) of the horizontal displacement control unit.

Description

Seismic isolator with non-contact displacement control {A SEISMIC ISOLATOR EQUIPPED WITH NON-CONTACT DISPLACEMENT CONTROL UNIT}

The present invention relates to a seismic isolator having a non-contact displacement control unit, and more particularly, to absorb vibration in three dimensions through a vertical displacement control unit and a horizontal displacement control unit. It relates to a seismic isolator having a non-contact displacement control unit interlocked with a control unit to offset a large displacement.

A large displacement means that the frequency is low and the displacement is high.

Existing seismic isolators exhibit high seismic isolation performance for displacements greater than 1Hz. However, when a large displacement occurs at a low frequency of 1 Hz or less, the maximum displacement of the seismic isolator is exceeded and the seismic isolator function cannot be performed.

Therefore, it is necessary to secure a response technology for a large displacement of 1 Hz or less. There is a damper as a way to reduce the large displacement, but the highest required technology to consider is the vibration transmissibility.

However, when a damper is installed, the structure and the damper are in contact with each other and become harder than the existing seismic isolator, so when vibration occurs on the floor, the vibration transmission rate will be higher and the seismic isolation performance of the existing seismic isolator will be lower.

In other words, a technology for controlling the displacement at a large displacement of 1 Hz or less is required while maintaining the vibration transmission rate of the existing seismic isolator as it is at 1 Hz or higher.

Republic of Korea Patent No. 10-2190869

The present invention has been devised in view of the above problems, and a first object of the present invention is to absorb vibration in three dimensions through a vertical displacement control unit and a horizontal displacement control unit, but a large displacement greater than the restoration allowable value of the horizontal displacement control unit An object of the present invention is to provide a seismic isolator having a non-contact displacement control unit capable of offsetting large displacement in multiple stages through a non-contact displacement control unit interlocked with the horizontal displacement control unit when generated.

A second object of the present invention is a seismic isolator having a non-contact displacement control unit that prevents the center of gravity from being raised by installing the non-contact displacement control unit on the outside of a base plate or a horizontal displacement plate, thereby achieving a more stable installation structure. is providing

A third object of the present invention is to firstly offset the horizontal displacement by the tension spring of the horizontal displacement control unit when a large displacement of 1 Hz or less occurs, and to continuously offset the horizontal displacement secondly through the shock absorbing member and the seismic isolation groove, and continuously It is to provide a seismic isolator having a non-contact displacement control unit capable of preventing an impact from being applied to a facility by offsetting horizontal displacement in third order through a damping rod and a horizontal damper.

According to features for achieving the above object, a first invention relates to a seismic isolator having a non-contact displacement control unit, for which a base plate fixed to a floor surface; and a sliding_coupling means between the base plate and the base plate. A horizontal displacement plate connected via a medium and having 2-axis horizontal degrees of freedom; and a vertical displacement plate fixed to the bottom surface of the facility and connected to the horizontal displacement plate and the vertical displacement control unit via a medium; and the sliding_coupling means. Is further connected to a horizontal displacement control unit that elastically restrains the two-axis degree of freedom of the horizontal displacement plate and restores its position, and the edge of the base plate or horizontal displacement plate is offset in response to a large displacement of 1 Hz or less transmitted to the horizontal displacement plate. The non-contact_displacement control unit is further mounted, and the non-contact_displacement control unit is interlocked with the horizontal displacement control unit by contact with the sliding_coupling means when a large displacement greater than the position restoration allowable value (less than 1HZ) of the horizontal displacement control unit occurs. It is characterized in that it offsets the large displacement.

In a second invention, in the first invention, the sliding_coupling means includes an X-axis rail fixed to the upper portion of the base plate, a seismic isolation block slidingly coupled to the X-axis rail and having an X-axis degree of freedom, and the seismic isolation block It is characterized in that it consists of a Y-axis block fixed to the upper part and a Y-axis rail fixed to the lower surface of the horizontal displacement plate and slidingly coupled to the Y-axis block to have a Y-axis degree of freedom.

In the third invention, in the second invention, the horizontal displacement control unit is composed of a plurality of tension springs connected to four sides of the seismic isolation block, and the free ends of each tension spring are formed on the lower surface of the horizontal displacement plate and the upper part of the base plate. It is characterized in that it is connected to the surface and elastically restrains the horizontal displacement plate having two axial degrees of freedom.

In the fourth invention, in the second invention, the non-contact_displacement control unit has a cantilever_bracket fixed to both sides of the edge in the X-axis vertical direction of the base plate or the horizontal displacement plate, and a damping rod mounted on each cantilever_bracket. It is composed of a horizontal damper, and the damping rod is installed in a non-contact state with a predetermined distance from the seismic isolation block of the sliding_coupling means.

In the fifth invention, in the second invention, the non-contact_displacement control unit has a cantilever_bracket fixed to both sides of the edge in the X-axis vertical direction of the base plate and the horizontal displacement plate, and a damping rod mounted on each cantilever_bracket. Consisting of a horizontal damper, each of the damping rods installed on the base plate and the horizontal displacement plate has different non-contact distances so as to sequentially contact the seismic isolation block 52 of the sliding_coupling means 50 in two steps. to be characterized

In the sixth invention, in the fourth or fifth invention, an end of the damping rod is provided with a shock absorbing member for mitigating a contact shock with the seismic isolation block, and the seismic isolation block has a seismic isolation groove for guiding the shock absorbing member. A portion is further formed, and the seismic isolation recess portion communicates with an exhaust port penetrating the seismic isolation block to cancel a large displacement response transmitted to the horizontal displacement plate.

In the seventh invention, in the second invention, a plurality of seismic isolators having the non-contact displacement control unit are coupled to the bottom surface of the facility, and the X-axis rail is turned 45° so that the non-contact_displacement control unit is installed in both the X and Y-axis directions. It is characterized by being mixed with the type.

According to the seismic isolator having the non-contact displacement control unit of the present invention, the non-contact displacement control unit is installed on the outer surface of the base plate or the horizontal displacement plate to prevent the center of gravity from being elevated, thereby achieving a more stable installation structure. .

In addition, according to the first and second embodiments, when a large displacement of 1HZ or less is generated, the horizontal displacement control unit primarily cancels the large displacement applied to the seismic isolation block, and secondarily the non-contact_ It has the effect of dissipating the large displacement by offsetting it with the damping rod of the displacement control unit).

Alternatively, according to the third embodiment, the horizontal displacement control unit firstly cancels the large displacement applied to the seismic isolation block, secondarily offsets the horizontal displacement through the shock absorbing member and the seismic isolation groove, and continuously damps It has the effect of preventing impact from being applied to the facility by offsetting the horizontal displacement tertiaryly through the rod and the horizontal damper.

1 is a perspective view of a seismic isolator having a non-contact displacement control unit according to a first embodiment of the present invention;
Figure 2 is a front view of Figure 1;
Figure 3 is a front view and cross-sectional view showing a tuned mass attenuator extracted from Figure 1;
4 is a configuration diagram of a mask damper extracted from FIG. 1;
5 is a perspective view showing a sliding_coupling means and a non-contact_displacement control unit installed on a base plate;
6 is an operation diagram showing the operation of a non-contact_displacement control unit installed on a base plate;
7 and 8 are exemplary views showing a state in which a seismic isolator having a non-contact displacement control unit according to a first embodiment of the present invention is mounted on a facility;
9 is an operation diagram showing the operation of a non-contact_displacement control unit according to a second embodiment of the present invention;
10 is an operation diagram showing the operation of a non-contact_displacement control unit according to a third embodiment of the present invention.

Objects, other objects, features and advantages of the present invention below will be easily understood through the following preferred embodiments in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms.

Rather, the embodiments introduced herein are provided so that the disclosed content will be thorough and complete and the spirit of the present invention will be sufficiently conveyed to those skilled in the art.

Embodiments described and illustrated herein also include complementary embodiments thereof.

In this specification, singular forms also include plural forms unless specifically stated otherwise in a phrase. The terms 'comprise' and/or 'comprising' used in the specification do not exclude the presence or addition of one or more other elements.

Hereinafter, the present invention will be described in detail with reference to the drawings. In describing the specific embodiments below, various specific details have been prepared to more specifically describe the invention and aid understanding. However, readers who have knowledge in this field to the extent that they can understand the present invention can recognize that it can be used without these various specific details. In some cases, it is mentioned in advance that parts that are commonly known in describing the invention and are not greatly related to the invention are not described in order to prevent confusion in describing the present invention.

Hereinafter, a seismic isolator having a non-contact displacement controller according to the present invention will be described in detail together with accompanying drawings.

[First Embodiment]

1 is a perspective view of a seismic isolator having a non-contact displacement controller according to a first embodiment of the present invention, FIG. 2 is a front view of FIG. 1, and FIG. 3 is a front view and cross-sectional view of a tuned mass damper taken from FIG. 1. 4 is a configuration diagram of a mask damper extracted from FIG. 1, FIG. 5 is a perspective view showing a sliding_coupling means and a non-contact_displacement control unit installed on a base plate, and FIG. 6 is a non-contact_displacement control unit installed on a base plate. FIGS. 7 and 8 are diagrams illustrating operation, and FIGS. 7 and 8 are exemplary diagrams showing a state in which a seismic isolator having a non-contact displacement controller according to the first embodiment of the present invention is mounted on a facility.

As shown in FIGS. 1 to 6, the present invention absorbs vibration in three dimensions through a vertical displacement control unit and a horizontal displacement control unit, but when a large displacement greater than the restoration allowable value of the horizontal displacement control unit occurs, It relates to a seismic isolator (100) having a non-contact displacement control unit capable of offsetting large displacement.

In the seismic isolator having the non-contact displacement control unit of the present invention, the non-contact displacement control unit is installed on the outside of the base plate to prevent the center of gravity from increasing in height, and through this, a more stable installation structure is achieved. It relates to a seismic isolator (100).

The seismic isolator 100 having the non-contact displacement control unit of the present invention is largely composed of three parts, which include a base plate 10 fixed to the bottom surface, the base plate 10 and the sliding_coupling means 50. A horizontal displacement plate 20 connected through a medium and having two axes of horizontal freedom, and a vertical displacement plate fixed to the bottom surface of the facility 200 and connected through the horizontal displacement plate 20 and the vertical displacement control unit 40 ( 30).

At this time, the non-contact_displacement control unit 70 is installed on the edge of the base plate 10 or the horizontal displacement plate 20 and transmitted to the horizontal displacement plate 20, as shown in (a) and (b) of FIG. It functions to offset the large displacement response of 1 Hz or less.

First, the vertical displacement plate 30 has one axis of freedom in the vertical direction, and is connected between the vertical displacement plate and the horizontal displacement plate 20 through the vertical displacement control unit 40 .

Here, the vertical displacement control unit 40 is composed of a plurality of vertical dampers 41 connected between the vertical displacement plate 30 and the horizontal displacement plate 20 .

At this time, the vertical displacement control unit 40 may be configured with a variable damper 42 that selectively adjusts the weight of the facility 200 and the damping force capable of responding to the large displacement.

In the embodiment of the present invention, four vertical dampers 41 and two variable dampers 42 are installed, and the number of installations can be selectively increased or decreased.

Here, each of the vertical dampers 41 has a structure having a restoring spring 411 and performs a normal function of canceling and dissipating vertical displacement.

And, as shown in (a), (b), and (c) of FIG. 4, the variable damper 42 includes a first piston 422 installed inside the damping cylinder 421, and the first piston 422 It consists of a second piston 423 rotatably external to the.

Here, the first and second pistons 422 and 423 are respectively first and second disks 422a and 423a and first and second piston rods 422b and 423b integrally coupled to the first and second disks 422a and 423a. ) can be configured.

At this time, a first orifice 422ab and a second orifice 423ab through which oil flows are respectively formed on the first and second disks 422a and 423a. When the second disk 423a is rotated, the second orifice 422ab The orifice 423ab is made to adjust the degree of opening of the first orifice 422ab.

In addition, a through hole 422ba representing the degree of opening of the first orifice 422ab is formed in the first piston rod 422b, and identification for identifying the degree of opening of the second orifice 423ab is formed in the second piston rod 423b. A sphere 423ba is formed and configured.

Therefore, when the user rotates the first piston rod 422b while looking at the through hole 422ba through the identification hole 423ba, the first orifice 422ab formed in the first disk 422a according to the passage cross-sectional area of the through hole 422ba The degree of opening can be adjusted.

For example, when the through hole 422ba is completely exposed to the identification hole 423ba, the first and second orifices 422aa and 423aa are completely in contact with each other so that oil flows, so that the variable damper 42 has a very soft damping force. If the through hole 422ba is not exposed from the identification hole 423ba, the first orifice 422ab of the first disk 422a is misaligned with the second orifice 423ab of the second disk 423a, so that the flow rate of oil As it becomes smaller, it has a hard damping force.

Through this, the vertical displacement control unit 40 can provide a structure capable of responding to a large displacement of 1HZ or more by setting the variable damper 42 .

In addition, the vertical displacement control unit 40 includes a tuned mass damper: a tuned mass damper 43 mounted on the bottom surface of the vertical displacement plate 30 to cancel vertical peak vibration according to the vertical movement of the mass body 432. It can be.

As shown in (a) and (b) of FIG. 3, the tuned mass damper 43 has a different vibration phase difference from the vertical damper 41 and the variable damper 42, and is located on the bottom surface of the vertical displacement plate 30. A fixed support frame 431 and a mass body 432 in which a plurality of tuned vertical dampers 433 are slidably coupled to both side walls of the support frame 431 and fixed to the bottom surface of the support frame 431. can be configured.

At this time, the mass body 432 has a structure that is slidably coupled to both side walls of the support frame 431 in a rail coupling structure so that it can only move vertically.

In addition, a plurality of tuning springs 434 are coupled to the lower surface of the mass body 432 to restore the position by supporting the lower portion.

The tuned mass damper 43 has a vibration phase difference according to the vertical damper 41 and the variable damper 42 through the vertically moving mass body 432, so that the vertical peak vibration of the facility 200 can be effectively offset. function properly

Meanwhile, the horizontal displacement plate 20 has a structure in which it is slidably coupled to the upper part of the base plate 10 through the sliding_coupling means 50 in response to the horizontal displacement with two horizontal degrees of freedom.

Here, as shown in FIGS. 2 and 5, the sliding_coupling means 50 is slidingly coupled to the X-axis rail 51 fixed to the upper portion of the base plate 10 and the X-axis rail 51, so that the X-axis degree of freedom A seismic isolation block 52 having a seismic isolation block 52, a Y-axis block 53 fixed to an upper portion of the seismic isolation block 52, and a Y-axis block 53 fixed to the lower surface of the horizontal displacement plate 20 and slidingly coupled to the Y-axis block 53 It is composed of a Y-axis rail 54 having a Y-axis degree of freedom.

At this time, the sliding_coupling means 50 may be further connected to a horizontal displacement controller 60 that restores the position by elastically restraining the 2-axis degrees of freedom of the horizontal displacement plate 20 .

The horizontal displacement controller 60 is composed of a plurality of tension springs connected to four sides of the seismic isolation block 52 .

At this time, the free end of each tension spring is connected to the lower surface of the horizontal displacement plate 20 and the upper surface of the base plate 10 to elastically restrain the horizontal displacement plate 20 having two degrees of freedom.

The aforementioned horizontal displacement control unit 60 is fixed to four sides of the seismic isolation block 52 located in the space between the base plate 10 and the horizontal displacement plate 20, thereby effectively lowering the height of the horizontal displacement plate 20. Therefore, it is possible to seek structural stability, and it also functions to offset horizontal displacement in response to a urine position of 1HZ or more.

On the other hand, the non-contact_displacement control unit 70 functions to offset the large displacement by interlocking with the horizontal displacement control unit 60 when a large displacement of the horizontal displacement control unit 60 or more (1HZ or less) is generated.

The non-contact_displacement control unit 70 additionally prevents separation of the horizontal displacement plate 20 when a large displacement occurs, and each cantilever_bracket fixed to both sides of the edge in the X-axis vertical direction of the base plate 10 It may be composed of a horizontal damper 72 having a damping rod 721 mounted on (71).

Also, when the non-contact_displacement control unit 70 is installed at the edge of the horizontal displacement plate 20, the cantilever_bracket 71 can be reversed and installed as shown in FIG. 2(b).

In the non-contact_displacement control unit 70, since the horizontal damper 72 is installed on the outside of the base plate 10 or the horizontal displacement plate 20 through the cantilever_bracket 71, the horizontal displacement plate ( 20), it is possible to provide a structure that can be installed without increasing the height.

Here, the damping rod 721 of the non-contact_displacement control unit 70 is installed in a non-contact state with a predetermined distance from the seismic isolation block 52 of the sliding_coupling means 50.

The above-mentioned non-contact distance is made up of a non-contact distance within a maximum position restoration allowable value of the tension spring, which is the horizontal displacement control unit 60, and may vary according to the allowable tension distance of the tension spring.

The function of the non-contact_displacement control unit 70 is to firstly cancel the large displacement applied to the seismic isolation block 52 by the horizontal displacement control unit 60 when a large displacement of 1HZ or less occurs, and FIG. 6 Similarly, the non-contact_displacement controller 70 secondarily in contact with the seismic isolation block 52 has a structure to offset the damping rod 721.

On the other hand, the seismic isolator 100 having the non-contact displacement controller of the present invention may be basically installed in a set of two sets as shown in FIG. 7 (a).

In addition, as shown in FIG. 7 (b) and FIG. 8, according to the weight, height and size of the facility 200, 1 set of 2 sets, 1 set of 2 x 2 sets, 1 set of 3 x 3 sets, and 4 x 4 sets Joe 1 set... can be installed as

At this time, in the seismic isolator 100 having the non-contact displacement control unit of the present invention, the non-contact_displacement control unit 70 is mixed with the type in which the X-axis rail 51 is turned by 45° so that the non-contact displacement control unit 70 is installed in the X and Y-axis directions. should be preceded by

This is because the non-contact_displacement control unit 70 is installed in the 1-axis horizontal direction, and is arranged in 2-axis directions, which are the X and Y axes.

[Second Embodiment]

9 is an operation diagram showing the operation of a non-contact_displacement control unit according to a second embodiment of the present invention.

The second embodiment includes the first embodiment, but the non-contact_displacement control unit 70 is configured to be installed on both edges of the base plate 10 and the horizontal displacement plate 20 to face each other. can

Each of the non-contact_displacement control units 70 may be installed to have different non-contact distances so as to sequentially contact the sliding_coupling means 50 in two stages.
In this second embodiment, the non-contact_displacement control unit 70 is installed by doubling the number, but the distance between the damping rod 721 of the horizontal damper 72 disposed to be non-contact with the seismic isolation block 52 is different from each other By doing so, when a large displacement occurs, the damping rod 721 with a short distance primarily offsets the large displacement, and the damping rod 721 with a large distance continuously cancels the large displacement secondarily.

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[Third Embodiment]

10 is an operation diagram showing the operation of a non-contact_displacement control unit according to a third embodiment of the present invention.

The third embodiment includes the first embodiment or the second embodiment, but a shock absorbing member for mitigating the contact shock with the seismic isolation block 52 at the end of the damping rod 721 of the non-contact_displacement control unit 70 (721a) may be configured externally.

In addition, a seismic isolation groove 521 guiding the shock absorbing member 721a may be further formed in the seismic isolation block 52 .

In addition, an exhaust port 522 penetrating the seismic isolation block 52 may be formed so as to be in communication with the seismic isolation groove so as to offset the large displacement response transmitted to the horizontal displacement plate 20 .

Here, it is necessary to first form the inner diameter of the exhaust port 522 to have a relatively smaller size than the inner diameter of the seismic isolation groove part 521 so as to have a buffering effect.

Therefore, when a large displacement occurs and the seismic isolation block 52 and the damping rod 721 collide, the damping rod 721 absorbs the external shock of the damping rod 721 before canceling the horizontal displacement by the horizontal damper 72. The member 721a is inserted into the seismic isolation groove 521 to offset horizontal displacement.

Specifically, when the shock absorbing member 721a is inserted into the seismic isolation groove part 521, the air filled in the seismic isolation groove part 521 is exhausted through the exhaust port 522 so that horizontal displacement can be offset softly without contact shock. do.

When applied to the first embodiment, the third embodiment primarily cancels the horizontal displacement by the tension spring of the horizontal displacement control unit 60, and continuously moves the horizontal displacement through the shock absorbing member 721a and the seismic isolation groove 521. Secondary offset, and horizontal displacement can be offset thirdly through the damping rod 721 and the horizontal damper 72 continuously, so that even if a large displacement occurs, the horizontal displacement is offset softly to prevent the impact being applied to the facility be able to prevent

In addition, when the third embodiment is applied to the second embodiment, the large horizontal displacement can be softly offset in multiple stages over four stages.

Since the embodiments described in this specification and the configurations shown in the drawings are only one of the most preferred embodiments of the present invention and do not represent all of the technical spirit of the present invention, various equivalents that can replace them at the time of this application It should be understood that there may be variations and examples.

10: base plate
20: horizontal displacement plate
30: vertical displacement plate
40: vertical displacement control unit 41: vertical damper 411: return spring
42: variable damper 421: damping cylinder
422: first piston 422a: first disk
422ab: first orifice 422b: first piston rod
422ba: through hole 423: second piston
423a: second disk 423ab: second orifice
423b: second piston rod 423ba: identification tool
43: tuned mass attenuator 431: support frame
432: mass body 433: tuned vertical damper
434: synchronizing spring
50: sliding_combining means 51: X-axis rail 52: seismic isolation block
521: seismic isolation groove part 522: exhaust port
53: Y-axis block 54: Y-axis rail
60: horizontal displacement control unit
70: non-contact_displacement control unit 71: cantilever_bracket 72: horizontal damper
721: damping rod 721a: shock absorbing member
100: seismic isolator with non-contact displacement control unit
200: facility

Claims (7)

Base plate 10 fixed to the bottom surface;
a horizontal displacement plate (20) connected to the base plate (10) through a sliding coupling means (50) and having two horizontal degrees of freedom;
A vertical displacement plate 30 fixed to the bottom surface of the facility 200 and connected via the horizontal displacement plate 20 and the vertical displacement control unit 40;
The sliding_coupling means 50 is further connected to a horizontal displacement control unit 60 that restores the position by elastically restraining the 2-axis degrees of freedom of the horizontal displacement plate 20,
The edge of the base plate 10 or the horizontal displacement plate 20 is further equipped with a non-contact_displacement control unit 70 capable of offsetting in response to a large displacement of 1 Hz or less transmitted to the horizontal displacement plate 20,
The non-contact_displacement control unit 70 moves the horizontal displacement control unit 60 and the horizontal displacement control unit 60 by contact with the sliding_coupling means 50 when a large displacement of the horizontal displacement control unit 60 or more (1HZ or less) occurs. A seismic isolator having a non-contact displacement control unit characterized in that it is interlocked to offset large displacement.
According to claim 1,
The sliding_coupling means 50 is
An X-axis rail 51 fixed to the upper portion of the base plate 10, a seismic isolation block 52 slidingly coupled to the X-axis rail 51 and having an X-axis degree of freedom, and an upper portion of the seismic isolation block 52 Characterized in that it consists of a Y-axis block 53 fixed to and a Y-axis rail 54 fixed to the bottom surface of the horizontal displacement plate 20 and slidingly coupled to the Y-axis block 53 to have a Y-axis degree of freedom. A seismic isolator having a non-contact displacement control unit.
According to claim 2,
The horizontal displacement control unit 60
Consists of a plurality of tension springs connected to four sides of the seismic isolation block 52,
The free end of each tension spring is connected to the lower surface of the horizontal displacement plate 20 and the upper surface of the base plate 10 to elastically restrain the horizontal displacement plate 20 having two axial degrees of freedom. A seismic isolator having a control unit.
According to claim 2,
The non-contact_displacement control unit 70
Horizontal with a cantilever_bracket 71 fixed to both sides of the edge of the base plate 10 or the horizontal displacement plate 20 in the X-axis vertical direction, and a damping rod 721 mounted on each cantilever_bracket 71 It consists of a damper 72,
The seismic isolator having a non-contact displacement control unit, characterized in that the damping rod (721) is installed in a non-contact state with a predetermined distance from the seismic isolation block (52) of the sliding_coupling means (50).
According to claim 2,
The non-contact_displacement control unit 70
Horizontal with cantilever_brackets 71 fixed to both sides of the edges of the base plate 10 and horizontal displacement plate 20 in the X-axis vertical direction, and damping rods 721 mounted on each cantilever_bracket 71 It consists of a damper 72,
Each of the damping rods 721 installed on the base plate 10 and the horizontal displacement plate 20 is sequentially contacted with the seismic isolation block 52 of the sliding_coupling means 50 in two stages at different non-contact distances. A seismic isolator having a non-contact displacement control unit, characterized in that it has a.
According to claim 4 or 5,
A shock absorbing member 721a for mitigating a contact shock with the seismic isolation block 52 is externally mounted at the end of the damping rod 721,
In the seismic isolation block 52, a seismic isolation groove part 521 for guiding the shock absorbing member 721a is further formed, and the seismic isolation groove part 521 communicates with an exhaust port 522 formed through the seismic isolation block 52 A seismic isolator having a non-contact displacement control unit, characterized in that the structure cancels the large displacement response transmitted to the horizontal displacement plate (20).
According to claim 2,
The seismic isolator 100 having the non-contact displacement control unit is coupled to the bottom surface of the facility 200, but the X-axis rail 51 is disposed mixedly with the type rotated by 45 ° so that the X-axis rail 51 is installed in the X and Y-axis directions. A seismic isolator having a non-contact displacement control unit.

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