KR102630257B1 - Composite Damping Table - Google Patents

Abstract

The present invention relates to a composite seismic isolation table for a computer or server designed to prevent damage or transmission of vibration caused by an earthquake.
The vibration-proof table is designed to attenuate vibrations within the table itself so that the up-down, left-right vibration caused by an earthquake is not transmitted to the computer or server.
Conventional vibration isolation tables generally include a structure that handles left and right vibrations in a single layer. However, the present invention can increase the seismic effect by including a two-layer structure that can resolve both left and right and up and down vibrations.
The present invention consists of a primary separation prevention guide, a secondary separation prevention guide, and a tertiary separation prevention guide, and further includes a primary upper plate, a secondary upper plate, and an upper plate, and also includes a primary lower plate, a secondary lower plate, It further includes a lower plate. It also includes a primary ball bearing and a secondary ball bearing, and consists of a primary heat spring, a secondary heat spring, a primary transverse spring, and a secondary transverse spring.
To summarize, the present invention consists of detailed parts. It consists of a primary vibration isolator, a secondary vibration isolator, and a housing. The primary vibration isolator is designed to resolve vertical vibration caused by an earthquake, and the secondary vibration isolator is also designed to resolve vertical vibration. A housing is provided to surround the primary and secondary anti-vibration tables.

Description

Composite Damping Table{Composite Damping Table}

The present invention relates to a composite seismic isolation table for a computer or server designed to prevent damage or transmission of vibration caused by an earthquake.

The vibration-proof table is designed to attenuate vibrations within the table itself so that the up-down, left-right vibration caused by an earthquake is not transmitted to the computer or server.

Conventional vibration isolation tables generally include a structure that handles left and right vibrations in a single layer. However, the present invention can increase the seismic effect by including a two-layer structure that can resolve both left and right and up and down vibrations.

The present invention consists of a primary separation prevention guide, a secondary separation prevention guide, and a tertiary separation prevention guide, and further includes a primary upper plate, a secondary upper plate, and an upper plate, and also includes a primary lower plate, a secondary lower plate, It further includes a lower plate. It also includes a primary ball bearing and a secondary ball bearing, and consists of a primary heat spring, a secondary heat spring, a primary transverse spring, and a secondary transverse spring.

Korean Registered Patent Gazette (registration number: 10-2417871, 2022-07-01, hereinafter referred to as ‘Prior Art 1’. Title of the invention “Seismic Isolation Table”) states, “The present invention is a device that is in rolling contact with an elastic restoration part made of silicon. It relates to a seismic isolation table having a simple structure and perfect seismic isolation function by providing a friction support. The seismic isolation table according to the present invention includes an upper table plate in the shape of a square plate that supports equipment subject to seismic isolation from the lower side; a lower side of the upper table plate A lower table plate provided in a symmetrical shape and fixed to the floor; a low-friction support member 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 with low friction ; An elastic restoration part is installed with four ends fixed to the four corners of the lower table plate and is made of a molded material of elastic material that restores the position of the low friction support part with elastic force."

In the present invention, the earthquake table includes a primary vibration isolation unit consisting of a primary top plate, a primary side plate, a primary separation prevention guide, and a primary lower plate, a secondary vibration isolation unit, and a housing surrounding the housing. Two units. Primary and secondary vibration isolation devices use horizontal springs to attenuate seismic vibrations in the vertical and horizontal directions. Additionally, ball bearings are used between the primary and secondary vibration isolation devices to provide greater vibration isolation efficiency.

Meanwhile, preceding 1 is characterized by providing seismic isolation using an elastic restoration part made of silicon and a low-friction support part in contact with the cloud. The structure consists of an upper plate supported by a square plate, a lower plate fixed to the ground, and an elastic restoration part made of elastic material that restores the position of the low-friction support part in contact with the cloud.

Overall, the present invention and the preceding 1 both relate to a seismic isolation table, but their specific features and components are different. The present invention provides a more advanced and comprehensive solution for protecting sensitive equipment from seismic vibrations.

According to Korean Registration Publication No. 10-2433676 (2022-08-12, hereinafter referred to as 'Preceding 2'. Name of invention: Seismic isolation table device), "A table with a lower table and an upper table arranged to face each other. In the seismic isolation table device that is disposed between the lower table and the upper table of the table portion and includes a seismic isolation unit for providing seismic isolation force, the seismic isolation unit includes a lower seismic isolation plate and a side of the lower seismic isolation plate facing each other. An upper seismic isolation plate arranged in a state, a rolling support for supporting the upper seismic isolation plate side to enable seismic isolation in the horizontal direction on the lower seismic isolation plate side, and an elastic seismic isolation force in the horizontal direction in conjunction with this rolling support. An elastic support part having a plurality of elastic members for providing elastic support, wherein the rolling support part includes two support plates arranged in an overlapping state, and a spaced distance from each other on the sides of the two support plates, forming a plane arrangement. A plurality of housings are fixed in a state sandwiched between a rolling support member and the two support plates, wherein the upper part of the ball of the rolling support member is protruding and exposed, and the lower part of the ball is formed to support and enable rolling movement in place. A seismic isolation table device is provided and is set to support the upper seismic isolation plate side by the rolling supports on the lower seismic isolation plate side.

Although the present invention and the preceding invention 2 are both related to a seismic isolation table, their specific features and components are different, just as compared to the preceding invention 1 and the present invention. The present invention provides a more advanced and comprehensive solution than the preceding two in terms of configuration for protecting sensitive equipment from seismic vibrations.

The primary spring (primary transverse spring and primary thermal spring) and secondary spring (secondary transverse spring and secondary thermal spring) can each be designed to cover areas with different vibration frequencies.

The first purpose of the present invention is to provide a composite seismic isolation table that is applied separately to the vibration frequency range, as there is a problem that the damping coefficient of the spring must be wide in order to cover the entire vibration frequency range with one spring. .

The second purpose of the present invention is to provide a composite seismic isolation table with a damping effect that can reduce mass displacement during an earthquake to half of the existing value by arranging springs in series.

In order to achieve the above objectives,

In the composite seismic isolation table consisting of a vibration isolation table and a housing,

A primary vibration isolation table located at the top of the housing and absorbing vertical vibration;

A primary transverse spring connected to the primary vibration isolation table to absorb left and right vibration; and

A primary ball bearing located at the bottom of the primary vibration isolation table and allowing the primary transverse spring to operate smoothly; and

A secondary vibration isolation table located below the primary ball bearing and absorbing vertical vibration; and

A secondary transverse spring connected to the secondary vibration isolation table to absorb left and right vibration; and

A secondary ball bearing located at the lower part of the secondary vibration isolation table and allowing the secondary transverse spring to operate smoothly; and

A composite seismic isolation table is proposed, which includes a housing surrounding the primary vibration isolator, the primary transverse spring, the secondary vibration isolator, and the secondary transverse spring.

It shows that by arranging springs in series, the mass displacement during an earthquake can be reduced to half of the existing value. Therefore, using two springs in series can provide an effective means of damping seismic vibrations compared to a single spring.

In addition, in order to cover the entire vibration frequency range with one spring, there is a problem that the width of the spring's damping coefficient must be wide, so the vibration frequency ranges are divided and applied, and by doing so, it is possible to respond more appropriately to each vibration frequency range. You can.

1 is a background diagram according to an embodiment of the present invention.
Figure 2 is a configuration diagram according to an embodiment of the present invention.

The present invention relates to a composite seismic isolation table for a computer or server designed to prevent damage or transmission of vibration caused by an earthquake.

The vibration-proof table is designed to attenuate vibrations within the table itself so that the up-down, left-right vibration caused by an earthquake is not transmitted to the computer or server.

Conventional vibration isolation tables generally include a structure that handles left and right vibrations in a single layer. However, the present invention can increase the seismic effect by including a two-layer structure that can resolve both left and right and up and down vibrations.

The present invention consists of a primary separation prevention guide, a secondary separation prevention guide, and a tertiary separation prevention guide, and includes a primary upper plate, a secondary upper plate, and an upper plate, and also a primary lower plate, a secondary lower plate, and a lower plate. It further includes. It also includes a primary ball bearing and a secondary ball bearing, and consists of a primary heat spring, a secondary heat spring, a primary transverse spring, and a secondary transverse spring.

To summarize, the present invention consists of detailed parts. It consists of a primary vibration isolator, a secondary vibration isolator, and a housing. The primary vibration isolator is designed to resolve vertical vibration caused by earthquakes, and the secondary vibration isolator is also designed to resolve vertical vibration. A housing is provided to surround the primary and secondary anti-vibration tables.

The primary vibration isolation table is located at the top of the housing and includes a structure that absorbs and attenuates vertical vibration. The secondary vibration isolator is located below the primary vibration isolator and above the upper part of the lower plate of the housing, and has a structure that further absorbs and attenuates vertical vibration. The housing is constructed to surround the primary and secondary vibration isolation tables to prevent vibration from being transmitted from the external environment to the equipment on the isolation table.

Overall, the combination of primary and secondary isolators and housing provides an effective means of protecting sensitive equipment from seismic vibrations.

In the present invention, a plurality of primary and secondary transverse springs connected to an inner plate that is bent and erected in succession on the lower plate (specifically, the upper part of the lower plate) are designed to absorb and attenuate left and right vibrations caused by earthquakes.

The primary vibration isolation table is connected to a plurality of primary transverse springs arranged and connected to the inner plate to provide a damping effect for left and right vibration. The secondary vibration isolation table is also connected to a plurality of secondary transverse springs continuously disposed on the inner plate to further absorb and attenuate left and right vibration. The combination of the primary and secondary transverse springs provides a very effective means of relieving left and right vibrations caused by earthquakes.

The present invention relates to a seismic isolation table including a primary vibration isolator and a secondary vibration isolator, wherein the primary and secondary vibration isolators are designed to absorb and attenuate vertical vibration, respectively, and the primary and secondary vibration isolators are designed to absorb and attenuate vertical vibration, respectively. The primary and secondary transverse springs, which are each connected to the car's vibration isolator in plural numbers to provide a damping effect and counteract left and right vibration, are each continuously disposed on the inner plate and are designed to absorb and attenuate left and right vibrations caused by earthquakes. The continuous arrangement of the primary and secondary transverse springs provides an effective means of eliminating side-to-side vibration.

Damping means to brake or dampen.

The present invention provides a very effective means of protecting equipment sensitive to vibration by secondarily absorbing up-down, left-right and left-right vibrations from vibrations caused by earthquakes by combining the first and second vibration isolators with the first and second transverse springs.

These primary springs (primary transverse spring and primary thermal spring) and secondary springs (secondary transverse spring and secondary thermal spring) can each be designed to cover areas with different vibration frequencies.

In order to cover the entire range of vibration frequencies with one spring, there is a problem that the width of the spring's damping coefficient must be wide, so the vibration frequency ranges are divided and applied, and by doing so, each vibration frequency range can be responded to more appropriately. .

For example, the present invention can better adapt to earthquakes with a wide frequency range by using primary and secondary thermal springs with different attenuation coefficients and connecting them in series.

If the damping coefficient of the primary heat spring is 0.5 and the damping coefficient of the secondary heat spring is 0.2, the effective damping coefficient of the seismic isolation table can be calculated as follows.

k_eff = k1 + k2 = (k1 x k2) / (k1 + k2)

k_eff = (0.5 x 0.2) / (0.5 + 0.2) = 0.14

k1 and k2 represent the damping coefficients of the primary and secondary heat springs, and k_eff represents the effective damping coefficient of the seismic isolation table.

The first part of the equation, k_eff = (k1 x k2) / (k1 + k2), is the product of the damping coefficients of the two individual springs divided by the sum of the damping coefficients. This equation is used to calculate the effective damping coefficient of the system when two springs are arranged in series.

The second part of the equation, k_eff = k1 + k2, represents the sum of the damping coefficients of the two individual springs.

By adjusting the damping coefficients of the first and second heat springs, the effective damping coefficient of the system can be optimized to effectively attenuate vibrations caused by earthquakes of different frequencies.

Hereinafter, it will be described in detail with reference to the drawings.

1 is a cross-sectional view according to an embodiment of the present invention.

Figure 2 is a configuration diagram according to an embodiment of the present invention.

When explained with reference to Figures 1 and 2,

The present invention can effectively attenuate vibrations caused by earthquakes of a wide range of frequencies by adjusting the attenuation coefficients of the primary heat spring 140 and the secondary heat spring 165. Using springs with different damping coefficients in series can adapt to different frequencies and reduce mass displacement during an earthquake.

Overall, the combination of primary and secondary thermal springs with different damping coefficients provides an effective means of protecting sensitive equipment from vibrations caused by earthquakes of different frequencies.

For the same reason as the first and second heat springs mentioned above, the first and second transverse springs 150 and 160 are also structured to cope with earthquakes of a wide range of frequencies.

Meanwhile, the structure for absorbing the vertical vibration of the first and second vibration isolation zones will be explained.

By explaining the primary vibration isolator, the secondary vibration isolator, which has the same structure, will also be explained.

The primary vibration isolation table is constructed in the same way as the primary housing, and the primary housing consists of a primary upper plate (120), a primary side plate (115), a primary separation prevention guide (125), and a primary lower plate (130). do. The primary side plate 115 is constructed by sequentially bending the primary upper plate 120. The primary lower plate 130 is seated within the primary separation prevention guide 125 made by bending the lower end of the primary side plate.

A plurality of primary heat springs 140 are disposed in the space between the primary upper plate 120 and the primary lower plate 130, thereby absorbing and attenuating the vertical vibration of the earthquake.

As described above, the primary vibration isolation table is connected to a plurality of primary transverse springs 150 on one side connected to the inner plate 155 of the housing and on the other side connected to the primary side plate 155 of the primary small housing. This absorbs and attenuates left and right vibrations.

The secondary vibration isolator also has the same structure and function, making it possible to achieve a more strengthened absorption structure for vibration through the first and second vibration isolators.

When explaining the secondary vibration isolator,

The secondary vibration isolation table is configured in the same way as the secondary small housing, and the secondary small housing consists of a secondary upper plate (163), a secondary side plate (118), a secondary separation prevention guide (128), and a secondary lower plate (132). do. The secondary side plate 118 is constructed by sequentially bending the secondary upper plate. The secondary lower plate 132_ is seated within the secondary separation prevention guide 128 made by bending the lower end of the secondary side plate 118.

A plurality of secondary heat springs 165 are disposed in the space between the secondary upper plate 163 and the secondary lower plate 132, thereby absorbing and attenuating the vertical vibration of the earthquake.

As described above, the secondary vibration isolation table is left and right vibration by a plurality of secondary transverse springs 160, one side of which is connected to the inner plate of the housing, and the other side connected to the secondary side plate of the secondary small housing (163, 118, 132, 128). This is absorbed and attenuated.

The housing consists of an upper plate 110, an outer plate 180, a lower lower plate 175, an upper lower plate 190, and an inner plate 155.

The primary and secondary vibration isolators are surrounded by inner plates extending from the lower plate of the housing (110, 180, 175, and 155), and are connected to the inner plates (155) by a plurality of first and second transverse springs (150, 160).

A plurality of primary ball bearings 145 are disposed between the primary vibration isolation table and the secondary vibration isolation table.

A plurality of primary ball bearings are disposed between the primary vibration isolator and the secondary vibration isolator. The primary ball bearing allows the primary transverse spring (150) to operate smoothly, and the primary ball bearing ensures smooth operation between the primary and secondary vibration isolators. It ensures independence and allows for more effective attenuation of vertical vibration.

The seismic isolation table includes the first and second vibration isolators and a plurality of primary ball bearings arranged between them. The ball bearings are designed to facilitate smooth operation of the lateral spring and ensure the independence of the first and second vibration isolators, More effective damping of vibration is possible.

The secondary vibration isolation table is disposed on the upper lower plate 190 of the housing. In the above, the inner plate is built by continuously bending from the lower plate. Looking at the specific structure, the inner plate is built by bending continuously from the upper part of the lower plate.

For the same reason as the secondary vibration isolator, a plurality of secondary ball bearings are disposed in the space between the secondary vibration isolator and the upper part of the lower plate.

The secondary ball bearing allows the secondary transverse spring to operate smoothly, and a plurality of secondary ball bearings may be placed between the secondary vibration isolator and the upper part of the lower plate of the housing.

The present invention can be viewed as a primary and secondary vibration isolator and a housing that covers them. The structure of the housing has an upper plate, a lower plate, and an inner surface that is bent in succession from the upper part of the lower plate, and the lower plate is composed of the upper lower plate and the lower lower plate. , In the middle of the upper and lower lower plates, a third separation prevention guide consisting of a valley-like groove is formed by bending the lower plate and the lower plate.

Meanwhile, the upper plate has an outer surface that is bent from the upper plate and stands downward, and there is a locking protrusion formed by bending the lower part of the outer surface.

The locking protrusion is seated in the recessed groove that functions as the third separation prevention guide, thereby indirectly coupling the upper plate and the lower plate. Indirect coupling is a coupling that has a gap rather than a fixed coupling, and is used to mean a coupling that allows some movement in response to vibration.

Accordingly, the first aspect of the present invention is as follows.

In the composite seismic isolation table consisting of a vibration isolation table and a housing,

A primary vibration isolation table located at the top of the housing and absorbing vertical vibration;

A primary transverse spring connected to the primary vibration isolation table to absorb left and right vibration; and

A primary ball bearing located at the bottom of the primary vibration isolation table and allowing the primary transverse spring to operate smoothly; and

A secondary vibration isolation table located below the primary ball bearing and absorbing vertical vibration; and

A secondary transverse spring connected to the secondary vibration isolation table to absorb left and right vibration; and

A secondary ball bearing located at the lower part of the secondary vibration isolation table and allowing the secondary transverse spring to operate smoothly; and

A composite seismic isolation table is proposed, which includes a housing surrounding the primary vibration isolator, the primary transverse spring, the secondary vibration isolator, and the secondary transverse spring.

An example of using springs to dampen earthquake vibrations can be demonstrated by considering a system in which a mass is suspended from a spring. When an earthquake occurs, the mass will experience vibration, which will be absorbed and damped by the spring.

To give a numerical example, considering a spring with a stiffness of 1kN/m, if a mass of 100 kg is suspended from the spring and is subjected to an earthquake with a maximum acceleration of 8 m/s^2, the displacement of the mass can be calculated using the formula: You can:

Displacement = (mass x maximum acceleration) / stiffness

Substituting the values gives the following result:

Displacement = (100kg x 8m/s^2) / 1kN/m = 800mm

This means that the maximum displacement of the mass during an earthquake will be 800 mm. By adjusting the stiffness of the spring, displacement can be reduced, providing a means of damping seismic vibrations.

If two springs are arranged in series, as in the previous example, the effective stiffness of the system is the sum of the stiffnesses of the individual springs.

If we consider the same system with two springs arranged in series, each with a stiffness of 1 kN/m, the effective stiffness of the system is 2 kN/m.

Using the same formula as before, the maximum displacement of a mass during an earthquake can be calculated as:

Displacement = (100kg x 8m/s^2) / 2kN/m = 400mm

This shows that by arranging the springs in series, the mass displacement during an earthquake can be reduced to half of the existing value. Therefore, using two springs in series can provide an effective means of damping seismic vibrations compared to a single spring.

When two springs are arranged in parallel, the effective stiffness of the system is the sum of the reciprocating motion of the individual spring stiffnesses.

If we consider the same system with two springs arranged in parallel, each with a stiffness of 1 kN/m, the effective stiffness of the system is:

1/k = 1/k1 + 1/k2

1/k = 1/1 + 1/1

k = 0.5 kN/m

Using the same formula as before, the maximum displacement of a mass during an earthquake can be calculated as:

Displacement = (100kg x 8m/s^2) / 0.5kN/m = 1600mm

This shows that by arranging the springs in parallel, the effective stiffness of the system is reduced, resulting in a larger mass displacement during an earthquake compared to a single spring or two springs arranged in series. Therefore, arranging springs in parallel is not an effective means of damping seismic vibrations.

Therefore, the composite seismic isolation table of the present invention was designed to not only prepare for earthquakes in various frequency bands, but also to double the attenuation effect, as if springs were arranged in series.

The housing according to the present invention is not limited by its shape. It may have a round or square shape.

The application of the composite seismic isolation table according to the present invention is not limited by size.

A single composite seismic isolation table can be used to place a small computer, and no matter how huge the frame, a total of four seismic isolation tables of the present invention can be placed, one at each square corner of the frame.

Although the present invention has been described with reference to specific embodiments, it is obvious to those skilled in the art that various changes are possible. Equivalents may be substituted for elements without departing from the true spirit and scope of the invention. Additionally, many modifications may be made without departing from the essential teachings of the invention.

140: Primary heat spring 165: Secondary heat spring 150: Primary transverse spring 160: Secondary transverse spring 120: Primary upper plate 115: Primary side plate 125: Primary separation prevention guide 130: Primary lower plate 155: Inner plate 180: Outer plate 110: Upper plate 175: Lower plate 190: Lower plate upper part

Claims (1)

In the composite seismic isolation table consisting of a vibration isolation table and a housing,
A primary vibration isolation table located at the top of the housing and absorbing vertical vibration;
A primary transverse spring connected to the primary vibration isolation table to absorb left and right vibration; and
A primary ball bearing located at the bottom of the primary vibration isolation table and allowing the primary transverse spring to operate smoothly; and
A secondary vibration isolation table located below the primary ball bearing and absorbing vertical vibration; and
A secondary transverse spring connected to the secondary vibration isolation table to absorb left and right vibration; and
A secondary ball bearing located at the lower part of the secondary vibration isolation table and allowing the secondary transverse spring to operate smoothly; and
A composite seismic isolation table comprising a housing surrounding the primary vibration isolator, the primary transverse spring, the secondary vibration isolator, and the secondary transverse spring.