KR20230151667A - The vibration reduction table - Google Patents

Abstract

The present invention relates to a seismic isolation table that has a simple structure and perfect seismic isolation function by having an elastic restoration part made of silicon and a low-friction support part in rolling contact, and has a size that matches the size of the lower surface of the equipment subject to seismic isolation. The following seismic isolation table includes an upper table plate in the shape of a square plate, which supports the equipment subject to seismic isolation from the lower side and is formed in a length that matches the lower surface of the equipment subject to seismic isolation; a lower table plate provided in a symmetrical shape below the upper table plate and fixed to the floor; a pair of low-friction support portions fixed to and installed on the lower surface of the upper table plate at a predetermined interval and in rolling contact with the upper surface of the lower table plate to support the upper table plate with low friction; It includes a pair of elastic restoration parts, the four ends of which are fixed to the corners and edges of the lower table plate and made of an elastic material that restores the position of the pair of low-friction support parts with elastic force.

Description

Seismic Isolation Table{THE VIBRATION REDUCTION TABLE}

The present invention relates to a seismic isolation table. More specifically, it has a simple structure and perfect seismic isolation function by having an elastic restoration part made of silicon and a low friction support part in rolling contact, and has a size that matches the size of the bottom of the equipment subject to seismic isolation. It's about seismic isolation tables.

Since expensive computer equipment, communication equipment, or precision measuring equipment is sensitive to temperature, it is necessary to maintain the temperature of the space where these equipment is installed at an appropriate temperature. To this end, a raised floor is usually installed, and the computer equipment is placed on the top of the raised floor. Lights are installed, and ducts connected to air conditioners are installed at the bottom of the raised floor to control the indoor temperature.

Meanwhile, when an earthquake occurs, vibration is transmitted in the vertical or horizontal direction to structures such as buildings or facilities, and the vibration in the horizontal direction causes the structure to shake and twist violently. If the magnitude of the transmitted vibration is large, it may partially damage the structure, reducing its stability, and in severe cases, it may cause the structure to collapse. Various earthquake-resistant devices have been developed and used to protect structures and equipment from earthquakes.

Even when installing a raised floor, damage to precision equipment cannot be avoided if vibrations from an earthquake are applied, and in this case, it can lead to serious business paralysis. Therefore, an additional seismic isolation device must be installed on the raised floor to protect against external forces such as an earthquake. A variety of devices are being developed to protect equipment installed on the upper part of a raised floor.

In accordance with the government's trend of strengthening the Volcanic Earthquake Disaster Countermeasures Act, in order to establish earthquake-resistant reinforcement measures for the general raised floors already installed in the computer rooms of public institutions and general companies, seismic isolation devices are installed at the bottom of various computer equipment as necessary.

The seismic isolation device uses a vibration absorption device to maximize the seismic vibration reduction function. The seismic isolation device that separates the seismic isolation object from the ground has a separate internal structure for vibration attenuation to solve the problem that the displacement of the loaded object is affected while the degree of acceleration caused by the force generated by seismic energy is reduced. There are variations, and various damping structures are being studied in relation to this.

The structure for vibration damping uses LM rails, balls and ball rolling plates, ball transfers, springs, etc.

Previous patent registration No. 10-0971365. In cases such as Patent Registration No. 10-1465335 and Patent Registration No. 10-0914032, one ball is used as a vibration damping structure in a hemispherical ball rolling plate. In order to have the basic structure of a seismic isolation device with a ball of a certain size and a hemispherical ball rolling plate, a height of at least 50 mm is required. When using one ball on a hemispherical ball rolling plate, it is difficult to maintain the level, making it difficult to use as a single module. In addition, there is a problem that the friction resistance structure of the ball rolling must be formed separately and a plurality of springs must be installed.

The technical problem to be solved by the present invention is a seismic isolation table that has a simple structure and perfect seismic isolation function by having an elastic restoration part made of silicon and a low-friction support part in rolling contact, and has a size that matches the floor size of the equipment subject to seismic isolation. is to provide.

The seismic isolation table according to the present invention for solving the above-described technical problem includes an upper table plate in the shape of a square plate, which supports the equipment subject to seismic isolation from the lower side and is formed to a length that matches the lower surface of the equipment subject to seismic isolation; a lower table plate provided in a symmetrical shape below the upper table plate and fixed to the floor; a pair of low-friction support portions fixed to and installed on the lower surface of the upper table plate at a predetermined interval and in rolling contact with the upper surface of the lower table plate to support the upper table plate with low friction; It includes a pair of elastic restoration parts, the four ends of which are fixed to the corners and edges of the lower table plate and made of an elastic material that restores the position of the pair of low-friction support parts with elastic force.

And in the present invention, the low-friction support part includes a cylindrical housing open downward; a rolling ball installed at the lower part of the housing so that a portion is exposed downward; It is preferable to include a plurality of bearing balls installed between the rolling balls and the housing to lubricate the smooth rolling of the rolling balls.

In addition, in the present invention, it is preferable that a plurality of the low friction supports are installed at the center of the upper table plate and in a radial direction around this.

Additionally, in the present invention, it is preferable that the elastic restoration part is made of silicon.

In addition, in the present invention, the elastic restoration part includes a support part penetrating part formed at the center and inserted through the low friction support part; Four connecting arms formed radially around the support penetrating portion; It is preferable to include four fixing parts formed at each end of the four connecting arms and fixed to the corners of the lower table plate.

In addition, the seismic isolation table according to the present invention is further provided with a temporary fixing bracket that is fixed and installed on both sides of the upper table plate and the lower table plate, and fixes the upper table plate and the lower table plate to a size less than the seismic force. It is desirable to be

In addition, the seismic isolation table according to the present invention preferably has two seismic isolation tables arranged side by side and is further provided with a connection plate connecting the upper surfaces of the two seismic isolation tables.

Meanwhile, the present invention also provides a composite seismic isolation table in which the four seismic isolation tables described above are arranged side by side, and three connection plates are further provided to connect the upper surfaces of the four seismic isolation tables to each other.

According to the seismic isolation table of the present invention, unlike existing spring products, the recovery method is excellent due to the elastic recovery part made of silicon, the product height is very low at 4.5 cm or less, and installation is simple and floor fixing work is not required.

In addition, since the entire seismic isolation table matches the floor size of the seismic isolation target facility, the seismic isolation table does not protrude outside the seismic isolation target facility when installed, which has the advantage of providing an attractive appearance.

1 and 2 are diagrams showing the structure of a seismic isolation table according to an embodiment of the present invention.
Figure 3 is a diagram showing the structure of a low-friction support portion according to an embodiment of the present invention.
Figure 4 is an exploded perspective view showing the structure of a seismic isolation table according to an embodiment of the present invention.
Figure 5 is a diagram showing the structure of an elastic restoration unit according to an embodiment of the present invention.
Figures 6 and 7 are diagrams showing the installation state of a seismic isolation table according to an embodiment of the present invention.
Figures 9 and 10 are diagrams showing the structure of a seismic isolation table according to another embodiment of the present invention.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the attached drawings.

<Example 1>

As shown in FIGS. 1 to 6, the seismic isolation table 100 according to this embodiment includes an upper table plate 110, a lower table plate 120, a pair of low friction supports 130, and a pair of elastic restoration It may be configured to include a unit 140.

First, as shown in FIG. 7, the upper table plate 110 is a square plate-shaped component that supports the seismic isolation target equipment 10 from the lower side. That is, the upper table plate 110 forms the upper part of the seismic isolation table 100 according to this embodiment, and in the actual installation state, the seismic isolation target equipment 10 is supported on its upper surface.

To this end, in this embodiment, the upper table plate 110 has a square plate structure whose size matches the overall shape of the bottom surface of the equipment 10 subject to seismic isolation, and is preferably made of a metal material with sufficient strength and hardness. In addition, as shown in FIGS. 1 and 2, the upper table plate 110 has a side 111 formed by bending its edge downward, and a low friction support portion 130, which will be described later, is installed in the center. A ball 112 is formed.

Next, as shown in FIGS. 1 to 4, the lower table plate 120 is provided on the lower side of the upper table plate 110 in a symmetrical shape with the upper table plate 110 and is fixed to the floor. It is an element. That is, the lower table plate 120 forms the lower part of the seismic isolation table 100 according to this embodiment, and provides an installation space for the elastic restoration part 140 and an operating space for the low friction support part 130.

Specifically, the lower table plate 120 has an overall square plate shape of the same size as the upper table plate 110, and its edge is bent upward to form a side 121, as shown in FIG. 1, This portion defines the movement space of the low friction support portion 130.

Next, as shown in FIG. 1, a pair of the low friction support parts 130 are fixed and installed on the lower surface of the upper table plate 110 at a certain distance from each other, and the lower table plate 120 It is a component that supports the upper table plate 110 with low friction by contacting the upper surface of the table.

That is, the low-friction support portion 130 allows the upper table plate 110 to easily roll on the upper surface of the lower table plate 120 without friction or with a very small friction force, and the upper table plate 110 Multiple units can be installed for stable support. For example, as shown in FIG. 5, four low-friction support parts 130 may be installed in the center and in a radial direction about this center.

In this embodiment, the low-friction support part 130 may be composed of a downward caster bearing, as specifically shown in FIG. 4, and the specific structure is a rolling ball 132 at the bottom of the housing 131 opened in the downward direction. is installed, and a plurality of small bearing balls 133 are installed between the housing 131 and the rolling ball 132. And a fixing part 135 for installing the low friction support part 130 to the upper table plate 110 is further formed on the upper part of the housing 131.

Next, the pair of elastic restoration parts 140 are installed with four ends fixed to both adjacent corners and edges of the lower table plate 120, as shown in FIGS. 2, 3, and 5. It is a component made of a molded material of elastic material that restores the position of the friction support portion 130 with elastic force. That is, when the external force is removed while the low-friction support part 130 is moved from its original position to another position due to seismic force, etc., the elastic restoration part 140 restores the position of the low-friction support part 130 to its original position with its own elastic force. It is ordered.

Therefore, in this embodiment, it is preferable that the elastic restoration part 140 is made of silicone, which has sufficient elasticity and does not change in physical properties during long-term installation and use. If the elastic restoration part 140 is made of silicon in this way, there is an advantage that it can be accurately and easily produced by methods such as injection molding.

In this embodiment, the elastic restoration part 140 may be configured to include a support part penetrating part 141, a connection plate 143, and a fixing part 144, as specifically shown in FIGS. 5 and 6. First, the support penetrating portion 141 is formed in the center, as shown in FIG. 5, and is a portion through which the low friction support portion 130 is inserted, and is a penetration through which the low friction support portion 130 can penetrate. Balls 142 are formed.

Next, the connection arm 143 is composed of four connection arms 143 formed radially around the support penetrating portion 141, as shown in FIGS. 5 and 6, and one connection arm 143 ) can be installed divided into two or more.

Next, as shown in FIGS. 5 and 6, the fixing portion 144 is formed at each end of the four connecting arms 143 and is a component fixed to the four corners of the lower table plate 120. Accordingly, the fixing part 144 is composed of four pieces like the connecting arm 143, and a fixing hole 146 through which the fixing member 145 for fixing to the lower table plate 120 passes is formed.

Meanwhile, the seismic isolation table 100 according to this embodiment is preferably further provided with a temporarily fixing bracket, as shown in Figures 1 to 3. The temporary fixing bracket is fixed and installed on both sides 111 and 121 of the upper table plate 110 and the lower table plate 120, respectively, and protects the upper table plate 110 and the lower table plate 120 from seismic force. It is a component that is fixed to the following size and is separated from the upper and lower table plates 110 and 120 when a force greater than seismic force is applied.

According to the temporary fixing bracket, the positions of the upper table plate 110 and the seismic isolation target equipment 10 installed on the upper table plate 110 are fixed during the installation process of the seismic isolation table 100 and in normal times, making installation easy and stably maintaining the equipment. There are advantages to operating it.

Meanwhile, when an earthquake occurs, the seismic isolation table 100 is separated from the upper and lower table plates 110 and 120 by the seismic force applied to the seismic isolation table 100, so it has no effect on the seismic isolation function.

Meanwhile, the composite seismic isolation table according to this embodiment preferably has a structure in which two seismic isolation tables 100 and 200 are connected by a connection plate 300, as shown in FIGS. 1 to 3. The connection plate 300 connects the two seismic isolation tables 100 and 200 so that the two seismic isolation tables 100 and 200 are spaced apart from each other at a certain distance so as to maintain the same spacing.

In addition, the composite seismic isolation table according to this embodiment has a structure in which four seismic isolation tables (100, 200, 500, and 600) are connected by three connection plates (300, 400, and 700), as shown in FIGS. 7 and 8. You can also have This composite seismic isolation table can support the seismic isolation target equipment 20, which has a structure in which three are connected, from the lower side.

100: Seismic isolation table according to an embodiment of the present invention
110: upper table plate 120: lower table plate
130: low friction support part 140: elastic restoration part
150: Temporarily fixing bracket 10: Equipment subject to seismic isolation

Claims (5)

An upper table plate in the shape of a square plate that supports the equipment subject to seismic isolation from the lower side and has a length that matches the lower surface of the equipment subject to seismic isolation;
a lower table plate provided in a symmetrical shape below the upper table plate and fixed to the floor;
a pair of low-friction support portions fixed to and installed on the lower surface of the upper table plate at a predetermined interval and in rolling contact with the upper surface of the lower table plate to support the upper table plate with low friction;
A seismic isolation table comprising: a pair of elastic restoration parts installed with four ends fixed to the corners and edges of the lower table plate and made of a molded material of elastic material that restores the position of the pair of low friction supports with elastic force. The method of claim 1, wherein the low friction support part,
A cylindrical housing open downward;
a rolling ball installed at the lower part of the housing so that a portion is exposed downward;
A seismic isolation table comprising a plurality of bearing balls installed between the rolling balls and the housing to lubricate the smooth rolling of the rolling balls. The method of claim 2, wherein the low friction support part,
A seismic isolation table, characterized in that a plurality of seismic isolation tables are installed at the center of the upper table plate and in a radial direction around it. The method of claim 2, wherein the elastic restoration unit,
A seismic isolation table characterized by being made of silicon. The method of claim 4, wherein the elastic restoration unit,
a support penetrating portion formed at the center and inserted through the low friction support portion;
Four connecting arms formed radially around the support penetrating portion;
A seismic isolation table comprising four fixing parts formed at each end of the four connecting arms and fixed to the corners of the lower table plate.

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