KR102182414B1 - The seismic damping device using sliding fricition - Google Patents

Abstract

The present invention relates to a previously applied invention of the present applicant (invention patent application no. 10-2017-0125848), and relates to a seismic isolation device using a friction method, which further complements and improves the seismic isolation device which minimizes earthquake damage, such as extending the service lifespan according to securing durability and securing operational stability by a fire prevention function. The seismic isolation device using the friction method includes: a sliding member (1) consisting of a pair of sliding sheets (11, 11′) whose sliding surfaces face each other and are in close contact with each other; a vibration-proof rubber mat (4, 4′) supporting the sliding member (1) from above and below; a load distribution plate (5) and a base plate (6) which are coupled to the upper and lower portions of the upper and lower vibration-proof rubber mat(4, 4′); a displacement control suspender (2) for controlling the displacement of the sliding member (1); and a fire cover (7) for protecting the sliding member (1) and the vibration-proof rubber mat (4, 4′) from a fire.

Description

The seismic isolation device by friction method {THE SEISMIC DAMPING DEVICE USING SLIDING FRICITION}

The present invention relates to a seismic isolator using a friction method, and more particularly, is an invention that complements and improves the previously applied invention of the present applicant (invention patent application No. 10-2017-0125848), and extends the service life by securing durability. It relates to a seismic isolating device by a friction method to ensure excellent operational stability by reinforcing fire protection functions and the like.

Earthquake affects the ground and structure at the same time, and of course, non-structures within the structure also suffer great damage. In order to prepare for earthquake damage, the structure is designed to be seismic by utilizing the response spectrum and reflecting design factors such as the ground factor and importance factor.

However, it was difficult to establish effective seismic measures for auxiliary facilities such as communication equipment, power equipment, information system equipment, and double floors, which are non-structures inside the building, causing enormous damage in the event of an earthquake.

In particular, electric power and communication facilities are very sensitive to shaking due to earthquake acceleration, and the floor collapses, or the anchoring or seismic isolator is not installed, causing the rack to slip or damage the conduction path. In addition, even if it does not fall, it is difficult to carry out disaster work due to damage to data due to impact during an earthquake, as well as damage caused by disconnection or cutting of the wiring connected to the equipment. In order to prevent this, various seismic isolators have been researched and developed.

As seismic isolators for existing information and power assets, there are seismic isolators such as ball method, curved rail method, and friction method depending on the driving method.

As a specific example, a device that absorbs the shaking of the floor using a stacked rubber body (Ref. 1), a device that keeps furniture in a non-contact state using a magnetic floating mechanism (Ref. 2), and uses air elasticity. There are a device that supports furniture, etc. (Ref. 3), and a device that moves furniture using movement by a roller (Ref. 4).

In addition, there are various base isolation, vibration isolation, and vibration isolation devices as described later.

To reference 5; Vibration or shock transmitted through the vibration prevention device is attenuated by the shock absorbing pad, so that the cubicle operates normally even with vibration and shock, thus improving the lifespan of the distributor and enabling smooth distribution. A switchboard with an anti-vibration device is described that allows the distribution of power to the required location.

In reference 6; A plurality of ball bearings positioned between the upper plate and the lower plate to support the horizontal displacement movement of the upper plate by rolling contact with the steel balls in point contact; A seismic isolating module for seismic reduction comprising at least one high-attenuating rubber for returning an upper plate that has been changed in position by a viscoelastic restoring force to its original position is disclosed.

In reference 7; Consisting of a first table with a first guide groove and a second table with a second guide groove arranged to be spaced apart by a certain distance, it is transmitted by frictional force caused by the load of computing equipment, communication equipment, and precision measurement equipment. A seismic isolating device is disclosed that provides a seismic isolating effect by absorbing even microscopic vibrations.

In reference 8; The vibration-proofing performance that attenuates mechanical or vehicle vibrations transmitted to high-tech shock-sensitive devices, vibration-proofing performance that attenuates vertical seismic vibrations such as earthquakes with a much larger amount of energy, and a device with vertical seismic vibration reduction device is described. have.

In reference 9; It can actively attenuate and absorb horizontal vibrations as well as vertical vibrations caused by earthquakes, block resonances that may occur in vibration attenuation or absorption means, and accurately measure the displacement of devices inside the switchgear due to vibrations. As a result, a seismic switchgear is described that is provided with a means such as to allow a certain degree of whether or not damage to the device has occurred even before a full-scale diagnosis.

To reference 10; Switchgear with seismic and seismic isolation structures that prevent deformation and damage of the switchgear by reducing vibrations acting on the switchgear (high platen, low platen, motor control panel, distribution panel), etc. when an earthquake occurs. , Motor control panel, distribution panel) are described.

In reference 11; When the switchboard is shaken due to an earthquake or external shock, the cable that extends out of the switchboard is minimized to be stretched or contracted to prevent damage to the cable, and when the ground is shaken by an earthquake or external factors, it is transmitted from the ground to the switchboard. A seismic switchboard to which a nonlinear seismic spring and a vibration-absorbing cable support device are applied to protect the switchboard by absorbing the resulting vibration as much as possible is disclosed.

(In the present invention, devices referred to in various terms such as a seismic isolator, a vibration isolator, and a vibration isolator for preventing earthquake damage are collectively referred to as a seismic isolator.)

On the other hand, in the case of the friction type seismic isolator by sliding of the material rather than the mechanical coupling structure of the mechanical elements mentioned above, the price is very low and the construction is simple, so when introducing a seismic isolator to prepare for earthquake disasters such as information assets of public institutions. There is an advantage that the budget can be drastically reduced.

The inventors of the present invention apply a seismic isolation method that performs a seismic isolation function by butting materials having a low friction coefficient (dynamic and static friction coefficients) when an earthquake occurs, when applied to the seismic isolation table, the relative displacement (ground displacement and structure Displacement) has already been invented a seismic isolating device that can be arranged at the bottom of the server rack to protect the equipment such as communication, computing, control, and power fields installed in the rack from earthquakes. (Ref. 12)

In the prior invention of the present applicant disclosed in Reference 12, displacement control is performed over the entire length of the displacement control suspender surrounding the sliding sheet. In other words, the elastic force operates over the entire length of the elastic band surrounding the sliding sheet to control the displacement. Therefore, during displacement control, slip occurs on the side of the sliding sheet that the elastic band is in contact with, and the elastic force for displacement control becomes loose [since it is expanded and contracted over the entire length], the operability becomes unstable and may cause a malfunction.

That is, as shown in Fig. 20, the slip phenomenon generated around the contact portion A of the elastic bands 22, 22' and 23, 23' contacting the side surfaces of the sliding seats 11 and 11' extends integrally. As the sliding sheets 11 and 11' located in the upper and lower directions are pulled, the elastic bands 22, 22' and 23 are pulled, due to the slip of the contact portion A contacting the side surfaces of the sliding sheets 11 and 11'. 23') has the disadvantage of weakening the displacement control power. Therefore, the elastic band 22,22'(23,23') performing the displacement control prevents slip from the contact part (A) of the sliding sheet 11,11', and performs a stable displacement control for more stable operation. You need to ask for your last name.

(Reference 1) Japanese Unexamined Publication No. 2011-099544. 2011.05.18. (Reference 2) Japanese Unexamined Publication No. 2010-223284. 2010.10.07. (Reference 3) Japanese Unexamined Publication No. 2010-203594. 2010.09.16. (Reference 4) Japanese Unexamined Publication No. 2008-309206. 2008.12.25. (Reference 5) Korean Patent Publication No. 10-1282201, 2013.07.04. (Reference 6) Korean Registered Patent Publication No. 10-1384027, 2014.04.09. (Reference 7) Korean Patent Publication No. 10-152855, 2015.06.12. (Reference 8) Korean Patent Publication No. 10-1510214, 2015.04.08. (Reference 9) Korean Patent Publication No. 10-1582313, 2016.01.05. (Reference 10) Republic of Korea Patent Publication No. 101730418, 2017.04.26. (Reference 11) Korean Patent Publication No. 10-1757831, 2017.07.14. (Reference 12) Korean Patent Publication No. 10-2019-0036675, 2019.04.05. (Reference 13) Korean Patent Publication No. 10-1867775, 2018.05.15.

The present invention complements and further improves the shortcomings of the applicant's previously applied invention (invention patent application No. 10-2017-0125848).

The present invention is a seismic isolation method that performs a seismic isolation function by butting a material having a low coefficient of friction when an earthquake occurs, unlike the ball method or the curved rail method, and is applied to the seismic isolation table to variably control the relative displacement due to seismic forces of various sizes and It is intended to provide a seismic isolator using a friction method that prevents the structure from falling and falls, and enables long-period earthquakes and longitudinal seismic forces to be responded.

The present invention provides an improved structure so that the displacement control suspender for controlling the displacement of the sliding seat can freely control the displacement according to the direction.

The present invention improves the coupling structure of the displacement control suspender to make it easier to manufacture and install with an assembly-type structure without the use of adhesives, and to compensate for the disadvantages vulnerable to fire by providing a fire protection cover with improved fire protection function. To ensure operability.

An object of the present invention is to provide a more stable operability by minimizing malfunction of the displacement control suspender since the operation of the displacement control suspender is performed with limited stability within the displacement of the sliding seat.

The present invention for solving the above problems; A sliding member comprising a pair of sliding sheets whose sliding surfaces face each other and are closely coupled; A vibration-proof rubber mat for supporting the sliding member from above and below; A load distribution plate and a base plate coupled to the upper and lower portions of the upper and lower anti-vibration rubber mats; A displacement control suspender for controlling displacement of the sliding member; It is composed of a fire cover for protecting the sliding member and the dustproof rubber mat from fire.

The present invention provides a seismic isolator with a very light and simple structure as a friction method using a sliding material, and can be applied to both long and short cycles, and can be easily installed by a fitting method without the use of adhesion, etc. It is possible to guarantee stable operation by supplementing the disadvantages that are vulnerable to fire as it is equipped with a fire protection cover and the advantage of simple installation because it does not require fixing work.

The present invention does not generate resonance even in long-period earthquakes, and provides benefits and effects such as reducing Z-axis shock, minimizing Z-axis motion, and being able to apply to various industrial devices as well as large and small server racks with various product specifications that can be expanded. Can be expected.

The present invention has a simple structure, is very easy to install, remove, and manage, and can be applied to various objects in various industrial fields as well as server racks, and unlike conventional mechanical configurations, there is no mechanical failure, high durability, and high maintenance. There are advantages such as simple and stable use for a long time.

In the present invention, since the sliding member is a non-metallic material, there is no risk of oxidation due to air, so there is no need for maintenance measures, and the material is a flat butt structure, unlike a mechanical structure such as a ball. Since there is no fear of deformation, there are advantages such as excellent operation stability and maintenance advantages.

In the present invention, the displacement control force of the displacement control suspender is performed more stably within the displacement range of the sliding seat, thereby preventing malfunction, and further improved operational stability can be expected.

The fire cover equipped with a fire extinguishing capsule automatically releases extinguishing substances in the event of a fire, and can safely protect the seismic isolator from a fire that may be damaged due to an earthquake.

1 is an exploded perspective view showing an embodiment of the present invention
2 and 3 are partially exploded perspective views showing an embodiment of the present invention
Figure 4 is an exploded perspective view of a main part showing an embodiment of the present invention
Figure 5 is a state diagram of separation and combination of the main part of the present invention
Figure 6 is a sectional view in a separated state of the present invention
Figure 7 is a cross-sectional view of the coupling state of the present invention
Figure 8 is a cross-sectional view of the operating state of the present invention
9 is an exploded perspective view of a main part showing another embodiment of the present invention
Figure 10 is a perspective view of the combined state of Figure 9
11 and 12 are perspective views for coupling the embodiment of FIG. 9 to a sliding sheet
13 is a sectional view in a partially separated state to which the embodiment of FIG. 9 is applied
14 is a cross-sectional view of the combined state of FIG. 13
15 is a cross-sectional view of the working state of FIG. 14
16 is a sectional view in a partially separated state to which the embodiment of FIG. 9 is applied
17 is a cross-sectional view of the combined state of FIG. 16
18 is a cross-sectional view of the working state of FIG. 16
19 is an excerpt of the main part for explaining the working state of the present invention
20 is an excerpt of main parts for explaining the working state of the prior art

The present invention comprises a sliding member consisting of a pair of sliding sheets of low friction material, a vibration-proof rubber mat supporting the sliding member from above and below, a load distribution plate and a base plate coupled to the upper and lower vibration-proof rubber mats, and the sliding member It is characterized in that a seismic isolating device is configured by a friction method, such as a displacement control suspender that controls the displacement of and a fire cover for protecting the sliding member from fire.

The sliding sheet constituting the sliding member is made of a pair of low-friction materials and is configured such that sliding surfaces face each other and are closely coupled to generate sliding friction.

The sliding member is coupled to a displacement control suspender that limits the amount of relative displacement between the sliding seats forming a pair and returns the sliding seats that have been moved relative to the origin.

The displacement control suspender is elastically coupled to a pair of upper and lower sliding seats, and the center is fixed to an upper and lower vibration-proof rubber mat to control the displacement of the upper and lower sliding seats.

The displacement control suspender is coupled to the anti-vibration rubber mat without the use of an adhesive, and is also assembled to the anti-vibration rubber mat and the sliding sheet without the use of adhesive.

The pair of sliding sheets is made of a vibration-absorbing material such as rubber, and a vibration-proof rubber mat is attached to absorb the vibration in the vertical direction caused by the earthquake.

A load distribution plate is attached to the upper surface of the upper anti-vibration rubber mat to distribute the load caused by the load of the object to be protected such as a server rack. An anti-slip mat may be additionally coupled to the upper surface of the load distribution plate to prevent slipping.

The base mat is attached to the bottom of the lower anti-vibration rubber mat.

The load distribution plate of the upper anti-vibration rubber mat is equipped with a blade blade that pushes the contact surface of the upper sliding part when driving with friction due to earthquakes.

On the load distribution plate of the upper anti-vibration rubber mat, a fire cover is installed to cover the anti-vibration rubber mat as well as sliding members from all sides to protect it from flames along with foreign substances such as dust. The fire cover is provided with a fire extinguishing capsule that automatically releases extinguishing substances in response to a fire.

Hereinafter, embodiments of the present invention will be described in detail together with the accompanying drawings.

1 is an exploded perspective view of a main part showing an embodiment of the present invention, FIGS. 2 and 3 are an exploded perspective view showing an embodiment of the present invention, FIG. 4 is an exploded perspective view of a part of FIG. 2, and FIG. 5 is Separated state sectional view, Figs. 6 and 7 are sectional views of the present invention.

The sliding member 1 is made of a pair of sliding seats 11 and 11', and a displacement control suspender 2 for controlling the displacement of the sliding seats 11 and 11' is coupled to the sliding member 1 .

The displacement control suspender 2 is combined to control the displacement of the vertical sliding seats 11 and 11 ′ by combining the X, Y axis crosswise, and the displacement control suspender 2 is elastic and flexible. It is composed of a material and is composed by combining the cross bands (22, 22') (23, 23') with a cross-shaped connector (21, 21') in a cross direction.

The cross-connecting parts 21 and 21 ′ are cross-shaped bands 22, 22 ′ and 23 ′ using a material of physical properties different from the elastic material of the cross bands 22, 22 ′ and 23, 23 ′. 23') is combined and the cross-connecting parts 21 and 21' are inserted into and fixed to the anti-vibration rubber bats 4 and 4'to be described later.

In addition, the displacement control suspender 2 cross-couples a plurality of straight bands 3 and 3A to the sliding seats 11 and 11 ′ with X and Y axis crosses, and these straight bands 3 and 3A are It can be composed of a displacement control suspender (2A) that is coupled to and fixed to the ding sheets (1, 1') and the anti-vibration rubber mats (4, 4'), respectively. The displacement control suspender 2 (2A) will be described in more detail later.

The pair of sliding sheets (11, 11') is made of a low-friction material, that is, a sliding material, and the sliding surfaces are mated to each other to reduce vibration when an earthquake occurs due to the sliding frictional action of these sliding sheets (11, 11'). To be organized.

The sliding member (1) absorbs the vibration of the earthquake between the upper and lower pair of sliding sheets (11, 11'), the friction coefficient between the two sliding sheets (11, 11')-More precisely, both sliding sheets ( It is preferable that the static frictional coefficient of the oppositely coupled sliding surfaces of 11, 11') is as low as possible.

To this end, in the embodiment of the present invention, it is preferable to use a fluororesin sheet (PTFE SHEET) exhibiting a low coefficient of friction with a thickness of about 0.075 mm for both sliding sheets 11 and 11 ′. The use of (molecular weight of 1 million or more is preferable) is also conceivable.

As described above, the sliding member 1 is coupled so that the sliding surfaces of the sliding sheets 11 and 11 ′ made of a low-friction material face each other and come into close contact with each other so that sliding occurs.

And the sliding member (1) is a displacement control suspender to limit the amount of relative displacement between the sliding seats (11, 11') forming a pair and to return the position of the sliding seats (11, 11') which have been moved relative to the origin. Combine (2).

The sliding member 1 composed of the pair of sliding sheets 11 and 11' is made of vibration-absorbing material such as rubber, so that it can absorb the vibration in the vertical direction (Z axis) caused by the earthquake. Combine Mat)(4,4') respectively.

The vibration-proof rubber mats 4 and 4 ′ are made of a cushion material and secure passages 41 and 41 ′ to which the displacement control suspenders 2 connected in a cross shape on all sides of the sliding member 1 can be coupled. . In other words, the passages 41 and 41' made of a cross-shaped space are secured so that the displacement control suspender 2 coupled in a cross shape can be inserted and operated.

The displacement control suspender 2 made of a stretchable material is to be coupled by bending the sliding sheets 11 and 11 ′ tightly coupled up and down in all directions, and the sliding sheets 11 and 11 ′ are crosswise as shown in the illustrated example. By combining, the relative displacement of the pair of sliding seats 11 and 11' is limited, and the relative movement of the sliding seats 11 and 11' can be returned to the origin.

That is, the displacement control suspender (2) is fixed to the center of the upper and lower vibration-proof rubber mats (4, 4') and the sliding seats (11, 11') to limit the relative displacement amount around the center and to return the relative movement to the origin. .

Let's look at the displacement control suspender (2) in detail.

The displacement control suspender 2 forms a cross connection part 21 and 21 ′ in the center so that the sliding sheets 11 and 11 ′ butt-coupled up and down can be combined in all directions of the X and Y axes, and these cross connection parts 21 ,21') with X,Y axis crosses and elastic bands (22,22') (23,23').

It goes without saying that the connection between the cross-connectors 21 and 21' and the elastic bands 22 and 22' and 23 and 23' can be performed by various methods such as thermal bonding.

The cross connection portions 21 and 21 ′ connect the elastic bands 22 and 22 ′ and 23 and 23 ′ at the top and bottom, and are fixed to the upper and lower anti-vibration rubber mats 4 and 4 ′. The elastic bands 22 and 22 ′ and 23 and 23 ′ are naturally composed of an elastic material so as to ensure an elongation according to the relative displacement of the sliding seats 11 and 11 ′, and the elastic bands 22 and 22 ′ ) (23, 23') are connected to the bottom and top of the cross connection (21, 21') is made of a material with a different physical property from the elastic material and a material having a high coefficient of friction, so that it is placed in the cross grooves (42, 42') to be described later. It is inserted so that it can exert a solid holding force.

As described above, the displacement control suspender (2) in which the elastic bands 22,22' (23,23') are connected by cross-connecting parts (21,21) is the elastic band (22,22') (23,23) connected with a cross. ') is attached to all sides of the sliding sheet (11, 11'), and the central cross-connecting part (21, 21') is fixed by inserting it into the cross grooves (42, 42') of the upper and lower anti-vibration rubber mats (4, 4') Combine.

In the above, the cross-connecting portions 21 and 21' connecting the elastic bands 22, 22' and 23, 23' are fixedly coupled to the anti-vibration rubber mats 4 and 4', so the upper and lower cross-connecting portions 21 and 21' Is naturally formed in the direction of the anti-vibration rubber mat (4,4'), and cross grooves (42,42') are formed in the position and standard corresponding to the cross-connecting parts (21,21') on the anti-vibration rubber mat (4,4'). To form.

In this way, the cross grooves 42 and 42 ′ of the anti-vibration rubber mats 4 and 4 ′ are naturally composed of a standard (shape and size) corresponding to the cross connection portions 21 and 21 ′, so that the elastic band 22 of the cross, 22') (23, 23') are connected to the cross connector (21, 21') is inserted and fixed.

The anti-vibration rubber mats (4, 4') in which the cross-connecting portions (21,21') of the elastic bands (22,22') (23,23') are coupled to the cross grooves (42,42') is a sliding sheet (11). ,11') and the load distribution plate (5) and the base mat (6) in close contact with each other in close contact with each other, thus exhibiting a strong fixing force from this.

On the other hand, the elastic bands (22, 22') (23, 23') that are cross-coupled to the sliding sheets (11, 11') are made of a non-stretchable material and a contact portion (A) with the side surfaces of the sliding sheets (11, 11'). The non-slip portion 8 is formed of a material having a high coefficient of friction. That is, the elastic bands 22, 22', 23, 23' have a high coefficient of friction so that slip does not occur in the contact portion A that comes into contact with the side surfaces of the sliding seats 11, 11'. The non-slip part 8 is composed of a non-stretchable material.

The non-slip portion 8 is formed to have a size that can sufficiently cover the portion in contact with the side surfaces of the sliding sheets 11 and 11', as shown in the illustrated example.

In this way, the elastic bands 22,22', 23,23', in which the non-slip portion 8 is in close contact with the sliding seats 11,11', are the contact portions A when the sliding seats 11,11' are displaced. Since no slip occurs, the stretching operation is not performed over the entire elastic bands 22, 22' and 23, 23', and it is limited in the part where displacement occurs.

That is, as shown in Fig. 19, when displacement occurs, the elastic bands 22 and 22 ′ between the non-slip part 8 in close contact with the side surfaces of the sliding sheets 11 and 11 ′ and the cross-shaped connection parts 21 and 21 ′ in the center ( 23, 23'), the tension is concentrated and the expansion and contraction operation is performed according to the displacement amount. At this time, there is no slip and no tension is generated between the sliding sheets 11 and 11 ′ on the upper and lower sides and the non-slip portion 8, thereby ensuring stable operability.

The non-slip part 8 of the elastic bands 22, 22' (23, 23') is not stretched by combining synthetic resin yarns with the elastic bands 22, 22' (23, 23'). It goes without saying that it can be variously implemented by bonding or integrally forming a non-stretch material having a high coefficient of friction.

As described above, the displacement control suspender 2 fixed to the anti-vibration rubber mats 4 and 4'is controlled in response to the displacement of the sliding seats 11 and 11' and returns to the origin.

8 to 16 show another embodiment of the displacement control suspender 2A, constituting two straight stretch bands 3 and 3A in a straight line as in the illustrated example, and the straight stretch band The displacement control suspender 2A is configured by crossing (3, 3A) crosswise.

The displacement control suspender 2A is divided into two straight extension bands 3 and 3A and is combined with a cross so that the displacement control suspender 2A that controls the displacement of the sliding member 1 can be displaced in either direction. At this time, only one of the straight stretch bands 3 and 3A performs the displacement, and the separated straight stretch bands 3 and 3A of the other crossing direction do not interfere with this, so the displacement can be controlled freely. Let's look at their composition in detail.

The straight elastic bands 3 and 3A are intersected in a cross shape of the X and Y axes around the central straight connection portions 31 and 31 ′ and 31A and 31A ′, and are cross-coupled to the sliding sheets 11 and 11 ′.

The straight connection parts 31,31', 31A, 31A', which connect the elastic bands 32,32' to form the straight stretchable bands 3,3A, are anti-vibration rubber mats 4,4' and sliding seats. 11, 11'), so the straight connection portions 31, 31', 31A, 31A' constituting these straight stretch bands 3, 3A are anti-vibration rubber mats 4, 4'and sliding seat 11 Each is formed in the direction of ,11'). Let's look at this in detail.

Two straight stretch bands (3, 3A) connect the stretch bands (32, 32') to the center straight connector (31, 31') (31A, 31A') and cross the sliding sheet (11, 11') Combined with, one straight elastic band 3 is fixedly coupled to the anti-vibration rubber mats 4 and 4', and the other straight elastic band 3A is fixedly coupled to the sliding seats 11 and 11'.

To this end, the anti-vibration rubber mats (4, 4') and the sliding sheets (11, 11') are formed to cross each other with straight fixing grooves (43, 43') and (12, 12') for their coupling. Insert and fix the central straight connector (31, 31') (31A, 31A') intersected and coupled to each other.

One of the two straight stretch bands 3 and 3A is configured by connecting the stretch bands 32 and 32' to the straight connector 31 and 31' in a straight line.

At this time, the straight elastic band 3 couples the straight connection portions 31 and 31' to the outside of the elastic bands 32 and 32'.

That is, after forming the straight connection portions 31 and 31' in the direction of the anti-vibration rubber mat (4, 4') and bonding to the sliding sheet (11, 11'), the fixed groove 43 of the anti-vibration rubber mat (4, 4') ,43') to be fixedly coupled.

In addition, as in the case of the straight stretch band 3, another straight stretch band 3A is configured by connecting the stretch bands 32A and 32A' to the straight connector portions 31A and 31A' in a straight line.

At this time, the straight elastic band 3A couples the straight connection portions 31A and 31A' in the inner direction of the elastic bands 32A and 32A'.

That is, after forming the straight connection portions 31A and 31A' in the direction of the sliding seats 11 and 11' and bonding to the sliding seats 11 and 11', the fixed grooves 12 of the two sliding seats 11 and 11' 12') to be fixedly coupled.

On the other hand, the non-slip part 8A is formed in the same configuration as the non-slip part 8 of the above-described example in the contact part A contacting the side surfaces of the sliding sheets 11 and 11 ′ in the above-described straight elastic bands 3 and 3A. It can be done.

That is, a non-slip portion 8A is formed of a non-stretch material and a material having a high coefficient of friction in the contact portion (A) with the side surfaces of the sliding sheets 11 and 11 ′ of the straight elastic bands 3 and 3A. ,11') It will be possible to implement the configuration so that slip and elasticity do not occur in the contact portion (A) with the side.

In this way, the displacement limiting suspender 2A coupled to the sliding seats 11 and 11' so that the straight elastic bands 3 and 3A cross crosswise is the vibration-proof rubber mats 4 and 4'and the sliding seats 11 and 11 ') is fixed to the straight connection portions 31 and 31' and 31A and 31A of the straight elastic bands 3 and 3A to elastically control the displacement of the sliding seats 11 and 11'.

A load distribution plate for distributing the load due to the load of the object to be protected, such as a server rack, on the upper surface of the upper anti-vibration rubber mat 4 of the sliding member 1 controlled by the displacement limiting suspender 2 and 2A as described above ( Combine 5).

The load distribution plate 5 is made of a material such as a steel plate having excellent bending strength so as to distribute the vertical load caused by the load.

In addition, a base mat 6 for placing on the floor of a building is coupled to the bottom of the lower anti-vibration rubber mat 4'. It is preferable that the base mat 6 installed to be in contact with the floor surface is formed of a flexible material capable of absorbing the irregularities of the floor surface and being in close contact with the floor surface.

The load distribution plate (5) is provided with a fire protection cover (7) that can protect from fire by covering all of the upper and lower vibration-proof rubber mats (4, 4') and the sliding member (1).

The load distribution plate 5 is provided with a fire cover 7 that can cover the entire seismic isolating device from all directions including the sliding member 1 up to the lower base mat 6.

The fire cover 7 is idle-coupled with the blocking plate 72 to the hinge shaft 71 in all directions of the load distribution plate 5, as shown in the example shown, so that the slope of the seismic isolator is formed by the blocking plate 72. Make it all covered. To this end, the length of the blocking plate 72 is formed in all directions of the upper load distribution plate 5 and is formed to cover the entire length from the load distribution plate 5 to the lower base mat 6, so that the sliding member 1 and the anti-vibration rubber It is configured to cover all slopes of the mats 4 and 4'.

The blocking plate 72 of the fire cover 7 completely covers the internal sliding member 1 and the vibration-proof rubber mats 3, 3 ′, and the passages 41 and 41 ′ of the vibration-proof rubber mats 4 and 4 ′. ) To block foreign substances such as dust, and protect it from flames and lights in case of fire.

In this way, the fire cover 7 prevents external dust or foreign matter from entering the passages 41 and 41 ′ of the anti-vibration rubber mats 4 and 4 ′ during normal operation, thereby contributing to securing stability and durability of operation. In case of fire, it can be protected with flames.

The fire cover 7 is idlely coupled to the load distribution plate 5 by a hinge shaft 71 as shown in the example shown, so when a displacement occurs due to an earthquake, the blocking plate 72 coupled to the hinge shaft 71 The hinge shaft 71 is lifted in the opposite direction in which the displacement of the sliding member 1 is generated, and is closed while returning together when the sliding member 1 is returned, so that it flows according to the displacement of the sliding member 1.

It is natural that the blocking plate 72 is selected as a material having excellent heat resistance, low heat transfer rate, and excellent fire protection, flame resistance, etc., and a torsion spring, etc., is installed on the hinge shaft 71. Thus, when displacement occurs, the opening and closing operation of the blocking plate 72 may be performed more dynamically.

Meanwhile, a fire extinguishing capsule 9 is installed on the fire cover 7. A fire extinguishing capsule 9 with a built-in fire extinguishing material is installed outside the blocking plate 72 so that the fire extinguishing material can be automatically released in case of a fire.

Extinguishing material is a material that extinguishes fire by expanding and exploding in response to external heat and being released to the outside, and is embedded in the fire extinguishing cap (9). As the extinguishing material contained in the digestive capsule 9, various vaporizable extinguishing materials including fluorinated ketone solution Novac 1230 may be used.

The digestive capsule 9 may be implemented with various compounds including polypropylene capable of releasing the digestive material at a specified point in time corresponding to the digestive material. These fire extinguishing capsules 9 calculate the temperature of the extinguishing material that has been transferred to the extinguishing material from the outside, and the degree of expansion of the extinguishing material accordingly, and set its thickness so that the extinguishing material can extinguish the fire in a designated fire situation. .

The fire extinguishing capsule 9 mounted on the fire protection cover 7 may be implemented as a fire protection capsule containing the fire extinguishing material disclosed in Reference 13.

In the friction-type seismic isolator constructed as described above, the sliding sheets (11, 11') of the sliding member (1) are sandwiched between the anti-vibration rubber pads (4, 4'), so that their sliding friction is horizontal when an earthquake occurs. In addition to this, the anti-vibration rubber pads (3, 3') have a seismic isolation effect that absorbs vibrations in the vertical direction during an earthquake by performing a damping action in response to the vibration of the vertical axis (Z axis) as a characteristic of the material. . Let's look at them in more detail.

When vibration is first transmitted to the floor due to the occurrence of an earthquake, this vibration is transmitted to the base mat 6 and is transmitted to the sliding member 1 closely coupled together with the anti-vibration rubber mats 4 and 4'. More specifically, it is transmitted to the sliding sheets 11 and 11'.

At this time, since the sliding surface in close contact between the upper and lower sliding sheets 11 and 11 ′ of the sliding member 1 has a low coefficient of friction, the lower sliding sheet 11 ′ follows up to a certain limit for the vibration force transmitted from the floor surface. If the limit is exceeded, sliding (sliding friction) occurs between both sliding seats 11 and 11' and displacement occurs.

At this time, the displacement due to the sliding friction is attenuated by the sliding friction by extending the displacement control suspenders 2 and 2A.

Soon, the vibration of the earthquake transmitted from the floor surface is transmitted from the base mat 6 to the lower sliding sheet 11' through the lower anti-vibration rubber mat 4', so these base mats 6 and the lower anti-vibration rubber mat 4' ) And the lower sliding seat 11' follow the vibration force.

However, the load distribution plate (5), the upper rubber pad (4) and the upper sliding sheet (11) on which the object to be protected is installed are slidingly coupled with the lower sliding sheet (11') under downward pressure by the load of the object to be protected. Therefore, transmission is attenuated by the frictional action of the sliding seats 11 and 11', so that the upper anti-vibration rubber mat 4 and the load distribution plate 5 do not follow the vibration force.

And the displacement of the sliding member 1 due to the frictional action of the sliding seats 11 and 11' is a process in which the upper and lower sliding seats 11 and 11' are slidingly rubbed by the expansion and contraction of the displacement control suspenders 2 and 2A. Are not completely separated from each other and are elastically controlled.

In this way, the vibration of the floor surface due to the sliding friction action is not transmitted to the object to be protected such as the server rack above the seismic isolator, so it can be safely protected from earthquakes.

When an earthquake occurs, the seismic isolation function is performed by the sliding friction of the sliding member 1 made of a low-friction material, and the relative displacement of the sliding part is controlled by the displacement control suspenders 2 and 2A. At this time, the displacement of the sliding member 1 should be designed to absorb the relative displacement of the ground and the old structure due to the occurrence of an earthquake, and this relative displacement depends on the magnitude of the frequency of the earthquake. If the Kobe Earthquake of January 17, 1995, which is a major earthquake of the 7th class of earthquakes, is cited among the response spectrum of previous earthquakes, the absolute displacement is 9.2cm and the relative displacement is 23.6cm. need.

Therefore, the elastic material for the displacement control suspender (2, 2A) has a form combined with the connecting material and must match the value of the stretch at 100% elongation (cm) and the relative displacement during a major earthquake. Must have an appropriate 100% modulus value, low hardness, and high extensibility, and the connecting material must be cross-joined with the elastic material, and the length of the overlapping weight must be controlled so that it does not affect the control of the relative displacement.

The existing seismic isolator such as the ball type has a structure in which a resonance phenomenon occurs because several natural frequencies exist due to various components and combinations.

However, the seismic isolating device according to the friction method according to the present invention is composed of a combination of a flexible material and a sliding method of a low-friction material, and it is seen that only a single value of the natural frequency of the elastic connecting member affects the resonance, not various complex kinematic coupling structures. There is an advantage that resonance can be avoided as much as possible.

The present invention is configured to be assembled by inserting and assembling displacement control suspenders (2) and (2A) that control displacement due to such sliding friction, so that operation instability can be eliminated (due to a decrease in adhesive strength by fixing with an adhesive or the like). In addition, with a simple assembly structure, you can expect benefits due to ease of installation.

In addition, the present invention can safely protect the seismic isolator from flames, etc. in the event of a fire through the provision of fire prevention means, as well as extending the service life according to securing durability by performing the function of blocking the inflow of foreign substances such as dust. It can contribute to securing operational stability by fire prevention.

Reference numerals used in the accompanying drawings in order to specifically describe the contents of the present invention are as follows.
The same reference numerals are used for the same components as in the conventional configuration.
1: sliding member 11, 11': sliding sheet
2,2A: Return Suspender 3,3A: Straight elastic band
4,4': anti-vibration rubber mat
5: Load distribution plate 6: Base mat
7: Fire cover 8: Non-slip part
9: Fireproof capsule

Claims (4)

Sliding member (1) consisting of a pair of sliding sheets (11, 11') that the sliding surfaces face each other and are in close contact; Anti-vibration rubber mats (4,4') supporting the sliding member (1) from the top and bottom; A load distribution plate 5 and a base plate 6 coupled to the upper and lower anti-vibration rubber mats 4 and 4'; A displacement control suspender (2) (2A) for controlling the displacement of the sliding member (1); In the seismic isolating device according to the friction method consisting of the sliding member (1), a fire protection cover (7) for protecting the vibration-proof rubber mat (4, 4') from fire,
The displacement control suspender (2);
Cross-connecting portions 21 and 21' connecting the elastic bands 22 and 22' and 23 and 23' with a cross;
Elastic bands (22,22') (23,23') which are connected crosswise by cross-connecting parts (21,21') to couple the sliding sheets (11,11') in all directions;
The cross grooves 42 and 42 ′ of the anti-vibration rubber mat 4 and 4 ′ to which the cross-connecting portions 21 and 21 ′ connecting the elastic bands 22 and 22 ′ and 23 and 23 ′ are inserted and fixed The seismic isolator according to the friction method, characterized in that consisting of; The method of claim 1, wherein the displacement control suspender (2A) comprises:
Straight stretch bands 3 and 3A that are connected in a straight line around the central straight connection parts 31 and 31 ′ and 31A and 31A ′ and are crossed with a cross so that the sliding sheets 11 and 11 ′ are cross-coupled to all sides;
Of the straight connector portions 31 and 31' (31A, 31A') connecting the straight stretch bands 3 and 3A, the straight connector of the straight stretch band 3 formed in the direction of the anti-vibration rubber mat 4, 4'31,31');
The date fixing grooves 43 and 43 ′ of the anti-vibration rubber mats 4 and 4 ′ into which the date connection portions 31 and 31 ′ of the date extension band 3 are inserted and fixed;
The straight connection part 31A of the straight stretch band 3A formed in the direction of the sliding sheet 11 and 11' among the straight connection parts 31 and 31' (31A, 31A') connecting the straight stretch bands 3 and 3A ,31A');
By a friction method, characterized in that it is composed of a straight fixing groove (12, 12') of the sliding sheet (11, 11') into which the straight connector (31A, 31A') of the straight stretch band (3A) is inserted and fixed. Seismic isolator. The method according to claim 1 or 2,
The elastic bands 22, 22', 23, 23' of the displacement control suspender 2, 2A, which are cross-coupled to the sliding seats 11 and 11' and are in contact with the side surfaces of the sliding seats 11 and 11'. , Displacement control by forming a non-slip part (8) (8A) with a non-stretch material and a material having a high friction coefficient on the contact part (A) of the straight elastic band (3) (3A) to control the displacement of the suspender (2) (2A) A seismic isolating device according to a friction method, characterized in that it is configured so that expansion and contraction and slip are not generated in these contact portions (A) during the time. According to claim 1, wherein the fire cover (7); A frictional method, characterized in that the fire extinguishing capsule 9 is installed outside the blocking plate 72 to expand and explode in response to external heat in the event of a fire, thereby automatically discharging the fire extinguishing material. Seismic isolator.

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