KR102417871B1 - The vibration reduction table - Google Patents

Abstract

The present invention relates to a seismic table equipped with a simple structure and a perfect seismic function by including an elastic restoring part made of a silicon material and a low-friction support part in rolling contact. The seismic table according to the present invention comprises: an upper table plate having a rectangular plate shape supporting a seismic target facility from a lower side; a lower table plate provided in a symmetrical shape below the upper table plate and fixed to a bottom surface; the low-friction support part fixed to and installed on a lower surface of the upper table plate to be in a roll contact with an upper surface of the lower table plate and supporting the upper table plate in a lower friction manner; and an elastic restoration part having four ends fixed to four corners of the lower table plate and made of a molded material made of an elastic material to restore the position of the low-friction support part with an elastic force. According to the present invention, installation is simple and floor fixing work is unnecessary.

Description

{THE VIBRATION REDUCTION TABLE}

The present invention relates to a seismic isolator table, and more particularly, to a seismic isolator table having a simple structure and perfect seismic isolating function by having an elastic restoring part made of silicone and a low friction support part in rolling contact.

Because expensive computer equipment, communication equipment, or precision measuring equipment are sensitive to temperature, it is necessary to maintain the temperature of the space where these equipment is installed at an appropriate temperature. Lights are installed, and ducts connected to air conditioners are installed on the lower part of the raised floor to control the indoor temperature.

On the other hand, when an earthquake occurs, vibrations are transmitted to structures such as buildings or facilities in the vertical direction or in the horizontal direction, and the vibrations in the horizontal direction shake and twist the structure severely. When the transmitted vibration is large, it partially damages the structure, reducing the stability of the structure, and in severe cases, the structure collapses. In order to protect structures and equipment from earthquakes, various seismic devices have been developed and used.

Even when installing a raised floor, if vibration is applied from an earthquake, damage to precision equipment, etc. cannot be avoided, and in this case, serious work paralysis may occur. Various devices are being developed to protect the equipment installed on the raised floor.

In accordance with the government's strengthening of the Volcanic Earthquake Disaster Countermeasures Act, in order to establish earthquake-resistance reinforcement measures for the general raised floors installed in the computer rooms of public institutions and general enterprises, various computer equipment installs seismic isolators at the lower part if necessary.

The seismic isolator uses a device for absorbing vibration in order to maximize the seismic vibration reduction function. In order to solve the problem that the displacement of the loaded object is affected while the degree of acceleration caused by the force generated by the seismic energy is reduced, the seismic isolator that separates the seismic isolating object from the ground has a separate internal structure for vibration damping. It has deformation and various damping structures are being studied in this regard.

LM rail, ball and ball rolling plate, ball transfer, spring, etc. are used for the structure for vibration damping.

Conventional Patent Registration No. 10-0971365. In the case of Patent Registration No. 10-1465335 and Patent Registration No. 10-0914032, a single ball is used as a vibration damping structure on a one hemispherical ball rolling plate. In order to have a basic structure of a seismic isolator with a ball of a certain size and a hemispherical ball rolling plate, a height of at least 50 mm is required. When one ball is used for one hemispherical ball rolling plate, it is difficult to maintain the horizontal level, so it is difficult to use it as a unit of one module. In addition, there is a problem in that the friction resistance structure of the ball roll must be separately formed and a plurality of springs must be installed.

The technical problem to be solved by the present invention is to provide a seismic isolating table having a simple structure and a perfect seismic isolating function by having a low friction support part in rolling contact with an elastic restoring part made of silicone material.

According to an aspect of the present invention, there is provided a seismic isolating table comprising: an upper table plate in the shape of a square plate supporting a facility for seismic isolation from a lower side; a lower table plate provided in a symmetrical shape below the upper table plate and fixed to the bottom surface; a low friction support part fixed to the lower surface of the upper table plate and in rolling contact with the upper surface of the lower table plate to support the upper table plate in low friction; and an elastic restoration part having four ends fixed to the four corners of the lower table plate and made of a molding made of an elastic material to restore the position of the low friction support part by elastic force.

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

In addition, in the present invention, it is preferable that a plurality of the low-friction support parts are installed in the center of the upper table plate and in a radial direction with the center as the center.

In addition, in the present invention, it is preferable that the elastic restoration part is made of silicone.

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

In addition, the seismic isolating table according to the present invention has a temporary fixing bracket fixed to both sides of the upper table plate and the lower table plate, respectively, and fixing the upper table plate and the lower table plate to a size less than or equal to the seismic force. It is preferable to be

According to the seismic isolating table of the present invention, there are advantages in that the restoration method is excellent, unlike the existing spring products by the elastic restoration part made of silicone material, the product height is very low (4.5 cm or less), the installation is simple, and the floor fixing construction is unnecessary.

1 and 2 are views showing the structure of the seismic isolation table according to an embodiment of the present invention.
3 is a view showing the structure of a low friction support according to an embodiment of the present invention.
4 is an exploded perspective view showing the structure of the seismic isolation table according to an embodiment of the present invention.
5 is a diagram illustrating a structure of an elastic restoration unit according to an embodiment of the present invention.
6 and 7 are views illustrating an installation state of the seismic isolation table according to an embodiment of the present invention.
9. 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 accompanying drawings.

< Example 1 >

As shown in FIGS. 1 to 4 , the seismic isolation table 100 according to this embodiment includes an upper table plate 110 , a lower table plate 120 , a low friction support part 130 , and an elastic restoration part 140 . can be configured.

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

To this end, in this embodiment, the upper table plate 110 as a whole has a rectangular plate structure, and is preferably made of a metal material having sufficient strength and hardness. In addition, as shown in FIGS. 1 and 2 , the upper table plate 110 has a side surface 111 formed by bending the edge portion downward, and a low-friction support unit 130 to be described later is installed in the center of the upper table plate 110 . 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 bottom surface. is an element That is, the lower table plate 120 forms the lower portion of the seismic isolation table 100 according to the present embodiment, and provides an installation space for the elastic restoration unit 140 and an operating space for the low friction support unit 130 .

Specifically, the lower table plate 120 has a rectangular plate shape as a whole, and as shown in FIG. 1 , the edge is bent upward to form the side surface 121 , and this part is the low-friction support part 130 . Limit movement space.

Next, as shown in FIG. 1 , the low-friction support 130 is fixedly installed on the lower surface of the upper table plate 110 , and rolls into contact with the upper surface of the lower table plate 120 to make rolling contact with the upper table plate. (110) is a component that supports low friction. That is, the low-friction support part 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 may be installed for stable support. For example, as shown in FIGS. 1 and 2 , four low-friction support units 130 may be installed at the center of the upper table plate 110 and in a radial direction centered thereon.

In this embodiment, the low-friction support 130 is specifically, as shown in FIG. 3, may be composed of a downward-facing caster bearing, and a specific structure is a rolling ball 132 in the lower portion 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 . In addition, a fixing part 135 for installing the low-friction support part 130 to the upper table plate 110 is further formed on the upper portion of the housing 131 .

Next, as shown in FIGS. 1 and 4 , the elastic restoration unit 140 is installed with four ends fixed to the four corners of the lower table plate 120 , and the position of the low-friction support unit 130 is adjusted with an elastic force. It is a component made of a molded product of an elastic material that is restored to 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, the elastic restoration unit 140 restores the position of the low-friction support unit 130 to its original position with its own elastic force. will make it

Therefore, in this embodiment, it is preferable that the elastic restoration unit 140 is made of silicone having sufficient elasticity and no change in physical properties during installation and use for a long period of time. In this way, when the elastic restoration unit 140 is made of silicon, there is an advantage in that it can be accurately and easily produced by a method such as injection.

In the present embodiment, the elastic restoration unit 140 may be configured to include a support portion penetrating portion 141 , a connecting arm 143 , and a fixing portion 144 , as specifically illustrated in FIGS. 4 and 5 . First, as shown in FIG. 5 , the support part penetrating part 141 is formed in the center and is a part through which the low friction support part 130 is inserted, and the low friction support part 130 penetrates through it. Balls 142 are formed.

Next, as shown in FIGS. 4 and 5 , the connecting arm 143 is composed of four connecting arms 143 that are radially formed around the supporting part through-portion 141 , and one connecting arm 143 . ) can be divided into two or more.

Next, as shown in FIGS. 4 and 5 , the fixing part 144 is formed at the ends 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 also composed of four 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.

On the other hand, as shown in 1 to 4 in the seismic isolation table 100 according to the present embodiment, it is preferable that the temporary fixing bracket 150 is further provided. The temporary fixing bracket 150 is fixedly installed to both sides 111 and 121 of the upper table plate 110 and the lower table plate 120, respectively, and the upper table plate 110 and the lower table plate 120 ) is fixed to a magnitude less than the seismic force, and is a component separated from the upper and lower table plates 110 and 120 when a force greater than or equal to the seismic force is applied.

According to the temporary fixing bracket 150, the position of the upper table plate 110 and the seismic isolation target facility 10 installed thereon is fixed during the installation process of the seismic isolating table 100 and in normal times, so that installation is easy and stable. It has the advantage of being able to operate the equipment with

Meanwhile, when an earthquake occurs, since it is separated from the upper and lower table plates 110 and 120 by the seismic force applied to the seismic isolating table 100, the seismic isolating action is not affected.

Specifically, in this embodiment, the temporary fixing bracket 150 is inserted into the installation protrusions 113 and 123 formed on the side surfaces of the upper and lower table plates 110 and 120, respectively, as shown in FIG. 4, and installed in a butterfly shape. It has a bracket structure.

< Example 2 >

As shown in FIGS. 9 and 10 , the seismic isolation table 200 according to this embodiment includes an upper table plate 210 , a lower table plate 220 , a low friction support part 230 , and an elastic restoration part 240 . can be configured.

First, the function of the upper table plate 210 is the same as that of the upper table plate 110 of Embodiment 1, and its structure has a rectangular plate shape. An installation hole for installing the low friction support 230 is formed in the center of the upper table plate 210 . On the other hand, the upper table plate 210 according to the present embodiment has a smaller size than the lower table plate 230, and the side surface is not formed at the edge.

And the lower table plate 220 has substantially the same structure and function as the lower table plate 120 of the first embodiment.

Next, the low-friction support 230 also performs the same structure and function as the low-friction support 130 of Embodiment 1, and in this embodiment, a single low-friction support 230 is installed.

Next, the elastic restoration unit 240 has substantially the same function and structure as the elastic restoration unit 140 of the first embodiment, except that the connecting arm 243 has a single-line structure.

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

Claims (6)

an upper table plate in the shape of a square plate that supports the seismic isolation target facility from the lower side;
a lower table plate provided in a symmetrical shape below the upper table plate and fixed to a bottom surface;
a low friction support part fixed to the lower surface of the upper table plate and in rolling contact with the upper surface of the lower table plate to support the upper table plate in low friction;
and an elastic restoration part having four ends fixed at the four corners of the lower table plate and made of a molding made of an elastic material to restore the position of the low-friction support part by elastic force;
The low friction support part,
a housing having a cylindrical shape that is opened downward;
a rolling ball installed in a lower portion of the housing so that a part thereof is exposed downward;
A plurality of bearing balls are installed between the rolling ball and the housing to lubricate the soft rolling of the rolling ball; including,
The elastic restoration unit,
a support portion through which is formed in the center and through which the low friction support portion is inserted;
four connecting arms radially formed around the support portion through;
Includes; four fixing parts respectively formed at the ends of the four connecting arms and fixed to the corners of the lower table plate;
Each of the four connecting arms is a seismic isolating table, characterized in that it is divided into two or more. delete According to claim 1, wherein the low friction support portion,
A seismic isolation table, characterized in that a plurality of pieces are installed in the center of the upper table plate and in a radial direction based on the center of the upper table plate. The method of claim 1, wherein the elastic restoration unit,
A seismic isolation table made of silicon. delete 5. The method of claim 4,
and temporary fixing brackets fixed to both sides of the upper table plate and the lower table plate, respectively, and fixing the upper table plate and the lower table plate to a size less than or equal to the seismic force.

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