KR102720458B1 - The integrated vibration reduction table - Google Patents

Abstract

The present invention relates to an integrated seismic isolation table having a simple structure and a perfect seismic isolation function by having an elastic restoring portion made of silicone and a low-friction supporting portion in rolling contact, and having a size matching the size of the lower surface of a seismic isolation target facility, and the integrated seismic isolation table according to the present invention comprises: an upper table plate in the shape of a square plate that supports the seismic isolation target facility from below and is formed to have a length matching the lower surface of the seismic isolation target facility; a lower table plate that is symmetrically provided on the lower side of the upper table plate and is fixed to a floor surface; a pair of low-friction supporting portions that are fixedly installed on the lower surface of the upper table plate at a predetermined interval and come into rolling contact with the upper surface of the lower table plate to support the upper table plate with low friction; and a pair of elastic restoring portions that are installed with four ends fixed to corners and edges of the lower table plate and are made of an elastic material molded product that restores the positions of the pair of low-friction supporting portions by elastic force.

Description

THE INTEGRATED VIBRATION REDUCTION TABLE

The present invention relates to an integrated seismic isolation table, and more specifically, to an integrated seismic isolation table having a simple structure and a perfect seismic isolation function by including an elastic restoring portion made of silicone and a low-friction support portion in cloud contact, and having a size matching the size of the lower surface of a seismic isolation target facility.

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 devices are installed at an appropriate level. To this end, a double floor is usually installed, computer equipment, etc. is installed on the upper part of the double floor, and ducts connected to air conditioners, etc. are installed on the lower part of the double floor to control the indoor temperature.

Meanwhile, when an earthquake occurs, vibrations are transmitted up and down or horizontally to structures such as buildings or facilities, and horizontal vibrations cause the structures to shake and twist severely. If the magnitude of the transmitted vibration is large, it can partially damage the structure, reducing its stability, and in severe cases, even cause the structure to collapse. In order to protect structures or equipment from earthquakes, various earthquake-resistant devices have been developed and used.

Even when a double floor is installed, precision equipment, etc. cannot avoid damage if vibrations from an earthquake are applied, and in this case, serious work paralysis can occur. Therefore, various devices are being developed to protect equipment installed on top of the double floor even when external forces such as earthquakes are applied by additionally installing seismic isolation devices on the double floor.

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

Seismic isolation devices use vibration absorption devices to maximize the function of reducing seismic vibrations. Seismic isolation devices that separate seismic isolation objects from the ground have structural deformations for separate vibration damping to resolve the problem that the degree of acceleration caused by the force generated by seismic energy is reduced while the displacement of loaded objects is affected, 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.

In the case of previous patent registration numbers 10-0971365, 10-1465335, and 10-0914032, a single ball is used as a vibration damping structure on a single hemispherical ball cloud plate. In order to have the basic structure of a base isolation device with a ball of a certain size and a hemispherical ball cloud plate, a height of at least 50 mm is required. If a single ball is used on a single hemispherical ball cloud plate, there is a problem that it is difficult to maintain the level, making it difficult to use as a single module unit. In addition, there is a problem that the friction resistance structure of the ball cloud must be formed separately and a plurality of springs must be installed.

The technical problem to be solved by the present invention is to provide an integrated seismic isolation table having a simple structure and a perfect seismic isolation function by including an elastic restoring part made of silicone material and a low-friction support part in cloud contact, and having a size matching the size of the floor surface of the seismic isolation target equipment.

In order to solve the above-mentioned technical problem, the integrated seismic isolation table according to the present invention comprises: an upper table plate in the shape of a square plate that supports a seismic isolation target facility from below and is formed with a length that matches the lower surface of the seismic isolation target facility; a lower table plate that is symmetrically provided on the lower surface of the upper table plate and is fixed to a floor surface; a pair of low-friction support parts that are fixedly installed on the lower surface of the upper table plate at a predetermined interval and come into rolling contact with the upper surface of the lower table plate to support the upper table plate with low friction; and a pair of elastic restoring parts that are installed with four ends fixed to corners and edges of the lower table plate and are made of an elastic material molded to restore the positions of the pair of low-friction support parts with elastic force.

And in the present invention, it is preferable that the low-friction support member includes: a cylindrical housing open toward the bottom; a rolling ball installed in the lower part of the housing so that a portion of the housing is exposed toward the bottom; and 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 low-friction support members are installed in the center of the upper table plate and in a radial direction centered thereon.

Additionally, in the present invention, it is preferable that the elastic restoring member is made of silicone.

In addition, in the present invention, it is preferable that the elastic restoring member includes: a support penetration portion formed in the center and inserted by penetrating the low-friction support portion; four connecting arms formed radially around the support penetration portion; and four fixing portions formed at each end of the four connecting arms and fixed to the corners of the lower table plate.

In addition, it is preferable that the integrated seismic isolation table according to the present invention further includes a temporary fixing bracket that is fixed and installed on each side of the upper table plate and the lower table plate, and fixes the upper table plate and the lower table plate to a size lower than the seismic force.

In addition, it is preferable that the integrated seismic isolation table according to the present invention further comprises two seismic isolation tables arranged in parallel and a connecting plate connecting the upper surfaces of the two seismic isolation tables.

Meanwhile, the present invention also provides a composite seismic isolation table in which four of the aforementioned seismic isolation tables are arranged in parallel and three connecting plates are further provided for connecting the upper surfaces of the four seismic isolation tables to each other.

According to the integrated seismic isolation table of the present invention, unlike existing spring products, the restoration method is excellent due to the elastic restoration part made of silicone material, the product height is very low at 4.5 cm or less, and installation is simple and there is an advantage of no need for floor fixing work.

In addition, since the entire isolation table matches the size of the floor surface of the isolation target equipment, the isolation table does not protrude outside the isolation target equipment when installed, so it also has the advantage of being attractive in appearance.

Figures 1 and 2 are drawings illustrating the structure of an integrated seismic isolation table according to one embodiment of the present invention.
FIG. 3 is a drawing illustrating the structure of a low-friction support according to one embodiment of the present invention.
FIG. 4 is an exploded perspective view illustrating the structure of an integral seismic isolation table according to one embodiment of the present invention.
FIG. 5 is a drawing illustrating the structure of an elastic restoring member according to one embodiment of the present invention.
Figures 6 and 7 are drawings showing the installation state of an integrated seismic isolation table according to one embodiment of the present invention.
FIGS. 9 and 10 are drawings illustrating the structure of an integral 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 >

An integrated seismic isolation table (100) according to the present embodiment may be configured to include an upper table plate (110), a lower table plate (120), a pair of low-friction support members (130), and a pair of elastic restoring members (140), as shown in FIGS. 1 to 6.

First, the upper table plate (110) is a square plate-shaped component that supports the seismic isolation target equipment (10) from the lower side, as shown in Fig. 7. That is, the upper table plate (110) forms the upper part of the integral seismic isolation table (100) according to the present embodiment, and in an 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 seismic isolation target facility (10), 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 an installation hole (112) for installing a low-friction support member (130) described later is formed in the center.

Next, the lower table plate (120) is a component that is provided on the lower side of the upper table plate (110) in a symmetrical shape with the upper table plate (110) as shown in FIGS. 1 to 4 and is fixed to the floor surface. That is, the lower table plate (120) forms the lower part of the seismic isolation table (100) according to the present embodiment and provides an installation space for the elastic restoring member (140) and an operating space for the low-friction support member (130).

Specifically, the lower table plate (120) has a square plate shape having the same overall size as the upper table plate (110), and its edge is bent upward as shown in FIG. 1 to form a side surface (121), and this portion limits the movement space of the low-friction support member (130).

Next, a pair of low-friction support members (130) are installed and fixed on the lower surface of the upper table plate (110) at a set distance from each other as shown in FIG. 1, and are components that support the upper table plate (110) with low friction by making rolling contact with the upper surface of the lower table plate (120).

That is, the low-friction support member (130) enables the upper table plate (110) to easily roll over the upper surface of the lower table plate (120) without friction or with very little friction, and a plurality of them may be installed to stably support the upper table plate (110). For example, as shown in FIG. 5, four low-friction support members (130) may be installed in the center and in a radial direction centered thereon.

In this embodiment, the low-friction support member (130) may be configured as a downward caster bearing, as specifically shown in FIG. 4, and has a specific structure in which a rolling ball (132) is installed in the lower part of a housing (131) that is opened downward, and a plurality of small bearing balls (133) are installed between the housing (131) and the rolling ball (132). In addition, a fixing member (135) is further formed on the upper part of the housing (131) for installing the low-friction support member (130) to the upper table plate (110).

Next, the above-described pair of elastic restoring members (140) are installed with their four ends fixed to adjacent corners and edges of the lower table plate (120) as shown in FIGS. 2, 3, and 5, and are components made of an elastic material molded to restore the position of the low-friction support member (130) with elastic force. That is, when the low-friction support member (130) has moved from its original position to another position due to seismic force or the like, and an external force is removed, the elastic restoring member (140) restores the position of the low-friction support member (130) to its original position with its own elastic force.

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

In this embodiment, the elastic restoring member (140) may be configured to include a support penetration member (141), a connecting plate (143), and a fixing member (144), as specifically shown in FIGS. 5 and 6. First, as shown in FIG. 5, the support penetration member (141) is formed in the center, and is a portion through which the low-friction support member (130) penetrates and is inserted, and through-holes (142) through which the low-friction support member (130) can penetrate are formed.

Next, the above connecting arm (143) is composed of four connecting arms (143) formed radially around the support penetration portion (141), as shown in FIGS. 5 and 6, and one connecting arm (143) can be installed by dividing into two or more.

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

Meanwhile, it is preferable that the integral seismic isolation table (100) according to the present embodiment further includes a temporary fixing bracket as shown in 1 to 3. The temporary fixing bracket is installed and fixed to each of the two side surfaces (111, 121) of the upper table plate (110) and the lower table plate (120), and is a component that fixes the upper table plate (110) and the lower table plate (120) to a size lower than the seismic force, and separates from the upper and lower table plates (110, 120) when a force higher than the seismic force is applied.

According to the above-mentioned fixed bracket, the positions of the upper table plate (110) and the seismic isolation target equipment (10) installed thereon are fixed during the installation process of the seismic isolation table (100) and during normal times, so that installation is easy and the equipment can be operated stably.

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

Meanwhile, it is preferable that the integrated seismic isolation table according to the present embodiment has a structure in which two seismic isolation tables (100, 200) are connected by a connecting plate (300), as shown in FIGS. 1 to 3. The connecting plate (300) connects the two seismic isolation tables (100, 200) so that they are spaced apart from each other at a certain distance and maintain the distance therebetween so that they correspond to the floor surface of the seismic isolation target equipment.

In addition, the integrated seismic isolation table according to the present embodiment may have a structure in which four seismic isolation tables (100, 200, 500, 600) are connected by three connecting plates (300, 400, 700), as shown in FIGS. 7 and 8. This composite seismic isolation table can support an isolation target facility (20) having a structure in which three are connected from the lower side.

100: Integrated seismic isolation table according to one embodiment of the present invention
110 : Upper table plate 120 : Lower table plate
130: Low friction support 140: Elastic restoring part
150: Fixed bracket 10: Seismic isolation target equipment

Claims (5)

An upper table plate in the shape of a square plate that supports the seismic isolation target equipment from the lower side and is formed with a length that matches the lower surface of the seismic isolation target equipment;
A lower table plate provided in a symmetrical shape on the lower side of the upper table plate and fixed to the floor surface;
A pair of low-friction support members are installed and fixed on the lower surface of the upper table plate at a set interval, and make rolling contact with the upper surface of the lower table plate to support the upper table plate with low friction;
A pair of elastic restoring members, each of which is installed with four ends fixed to the corners and edges of the lower table plate, and made of an elastic material molded to restore the positions of the pair of low-friction support members with elastic force;
The above low friction support member,
A cylindrical housing open at the bottom;
A rolling ball installed so that a portion of the lower portion of the housing is exposed downward;
A plurality of bearing balls are installed between the rolling ball and the housing to lubricate the smooth rolling of the rolling ball;
The above elastic restoring part,
A support penetration portion formed in the center and inserted through the low friction support portion;
Four connecting arms formed radially around the above support penetration portion;
An integrated seismic isolation table characterized by including four fixing parts formed at each end of the four connecting arms and fixed to the corners of the lower table plate. delete In the first paragraph, the low friction support member,
An integrated seismic isolation table characterized in that a plurality of seismic isolation tables are installed in the center of the upper table plate and in a radial direction centered thereon. In the first paragraph, the elastic restoring part,
An integral seismic isolation table characterized by being made of silicone. delete

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