KR101854412B1 - Three-dimensional isolation device using vibroisolating rubber - Google Patents

Abstract

The present invention relates to a three-dimensional vibration isolation device that can prevent interference between springs when a vibration is generated by disposing springs in the same direction and at the same angle as the rails, and is designed to be able to accommodate vibration in a vertical direction by providing a vibration proof rubber for absorbing vibration to a vibration damping member connecting upper and lower plates. According to the present invention, a three-dimensional vibration isolation device having a vibration proof rubber includes: a lower plate having a first spring fixing part protruding upward at one side and an opposite side spaced from the center by a predetermined distance; a first guide rail having a straight shape and fixed to an upper end of the lower plate such that the central portion thereof coincides with the center of the lower plate; a vibration damping member having a hollow portion formed by a first plate on the upper side and a second plate on the lower side which are spaced apart from each other by four shafts arranged in a cross form, wherein a lower slider coupled to the first guide rail is fixed to a lower end of the second plate to be slidable along the longitudinal direction of the first guide rail, and an upper slider is fixed to an upper end of the first plate; an upper plate supported by the vibration damping member and provided with a second spring fixing portion protruding downward from one side and the opposite side spaced from the center by a predetermined distance; a second guide rail fixedly installed at a lower end of the upper plate such that the central portion thereof coincides with the central portion of the upper plate and having a straight shape to be coupled to the upper slider; a plurality of spring members each having one side end connected to the four shafts and the opposite end connected to the first spring fixing portion or the second spring fixing portion, respectively; and a vibration proof rubber provided on the hollow portion to be closely fixed to the lower end of the first plate and the upper end of the second plate.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a three-dimensional isolation device using vibroisolating rubber,

The present invention relates to a three-dimensional isolator designed to prevent interference between springs that damp vibrations and to cope with vibrations in the vertical direction. More specifically, the present invention relates to a three- The present invention relates to a three-dimensional isolator designed to prevent interference between springs and to provide a vibration-damping member for connecting a top plate and a bottom plate with a vibration-absorbing rubber for absorbing vibration, so as to cope with vibrations in a vertical direction.

Generally, when an earthquake occurs, all the buildings, bridges, etc. on the ground are shaken to the left or right or up and down depending on the type of seismic waves generated from the source. Such vibrations cause serious damage to buildings, bridges, The inside of the product will fall or fall and be damaged, resulting in great damage to property.

Therefore, a seismic isolation device has been developed and used as a device for protecting buildings, bridges, and the like from vibrations caused by earthquakes and for protecting the objects inside the building. However, in the conventional seismic isolation device, When a plurality of springs are installed to absorb vibration in the direction of the vibration, there is a problem that interference occurs between the springs when the vibration occurs, and the vibration in the horizontal direction can be coped with. However, There was an insufficient problem.

As an invention relating to a seismic isolation device for solving such a problem, there has been proposed a three-dimensional seismic isolation device having a horizontal vibration reduction function, as disclosed in Korean Patent Laid-Open Publication No. 10-2012-0058283 and in Korean Registered Patent No. 10-1595507, Korean Patent Registration No. 10-1600915 "Two-dimensional seismic isolation device" and Korean Patent Registration No. 10-1790961 "Seismic isolation unit and seismic isolation device including the same" have been proposed and disclosed.

The above-mentioned Korean Patent Laid-Open Publication No. 10-2012-0058283 entitled " Base isolation box " includes a support portion coupled to a bottom plate of a building, a lower fixed plate coupled to the support portion, An upper plate disposed on the intermediate plate and linearly reciprocating in a direction perpendicular to the horizontal direction within the plane of the intermediate plate and provided with a device rack, And an elastic restoring portion for resiliently restoring the position of the upper plate so as to absorb vibration generated by an external force such as an earthquake and to protect equipment installed on the upper surface thereof. -1595507 " Three-dimensional isolation device with horizontal vibration reduction function " A guide block moving in contact with the rails provided on the mutually facing surfaces of the frames is constituted by a cushioning member so as to absorb the vibration in the up-and-down direction. And an end portion of the spring is fixed to the upper frame and the lower frame to absorb the vibration of the lower frame and to prevent the vibration from being transmitted to the upper frame.

The "two-dimensional seismic isolation device" of Korean Patent Registration No. 10-1600915 includes a horizontal bottom plate portion constituted of four horizontal bottom plates for transmitting the load on the concrete to the foundation of the concrete, And a center portion fixedly installed at the center of the edge of the frame, wherein the center frame is fixed to the center of the edge of the frame, And a tension spring module composed of four tensile spring modules that perform damping by restoring the seismic frame portion to an original position by applying rigidity in a horizontal direction when an earthquake occurs, thereby effectively damping the horizontal force due to earthquake or vibration And an apparatus having an improved restoring force is proposed In the "seismic isolation unit and the seismic isolation system including the seismic isolation unit" of the Korean Patent Registration No. 10-1790961, first grooves and second grooves are formed in the lower base and the upper base, respectively, so that the first and second mounts The present invention relates to a device capable of preventing a collision of a first side of a first mount and a second side of a first mount and a second side of the first mount, It was proposed.

Therefore, in the present invention, the above-mentioned conventional arts are improved to provide a seismic isolation device capable of preventing interference between springs at the time of vibration generation and more effectively responding to vibration in the horizontal direction.

Korean Patent Publication No. 10-2012-0058283 (June 06, 2012) Korean Registered Patent No. 10-1595507 (Feb. Korean Patent Registration No. 10-1600915 (Feb. Korean Registered Patent No. 10-1790961 (Oct. 23, 2017)

A three-dimensional seismic isolation device equipped with an anti-vibration rubber according to the present invention is a technique proposed to solve the problems of the above-

When a plurality of springs that absorb vibrations are installed in the direction crossing the longitudinal direction of the rails provided on the lower plate, there arises a problem that interference occurs between the springs when the vibration occurs,

Vibration in the horizontal direction can be coped with, but there is a problem that the vibration in the vertical direction is not coped with or the corresponding effect is insufficient. Therefore, a solution to this problem is presented.

A three-dimensional seismic isolation device equipped with an anti-vibration rubber according to the present invention, in order to realize the above object,

A lower plate having a first spring fixing part protruding upward at one side and a second side spaced from the center by a predetermined distance; A first guide rail having a straight shape and fixed to an upper end of the lower plate so that a central portion of the guide rail coincides with a central portion of the lower plate; The first guide rail has a first guide rail and a second guide rail. The second guide rail is spaced apart from each other by four shafts arranged in a cross shape to form a hollow portion. The first guide rail is slidable along the longitudinal direction of the first guide rail A vibration damping member fixedly installed on a lower end of the second plate and having an upper slider fixedly mounted on an upper end of the first plate; An upper plate supported by the vibration damping member and having a second spring fixing portion protruding downward at one side and the other side spaced from the center by a predetermined distance; A second guide rail fixedly installed at a lower end of the upper plate so that the central portion thereof coincides with the central portion of the upper plate, and is linearly fastened to the upper slider; A plurality of spring members each having one end connected to the four shafts and the other end connected to the first spring fixing portion or the second spring fixing portion, respectively; An anti-vibration rubber provided on the hollow portion so as to be closely fixed to the lower end of the first plate and the upper end of the second plate; The present invention discloses a three-dimensional seismic isolation device equipped with an anti-vibration rubber.

In the three-dimensional seismic isolation device equipped with the anti-vibration rubber according to the present invention,

A plurality of springs are arranged in the same direction and in the direction crossing the longitudinal direction of the guide rails provided on the lower plate so that the directions of the forces applied to the springs are different from each other,

The vibration damping member connecting the upper plate and the lower plate is provided with the vibration-damping rubber that absorbs the vibration, so that it is possible to cope with the vibration in the vertical direction.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an external perspective view of a three-dimensional seismic isolation system equipped with a vibration proof rubber according to the present invention; FIG.
2 is a perspective view showing a state in which a first guide rail and a first spring fixing portion are installed on a lower plate of a three-dimensional vibration isolator equipped with a vibration proof rubber according to the present invention.
3 is a perspective view showing a vibration damping member and a spring member fastened to a first guide rail of a three-dimensional vibration isolator equipped with a vibration proof rubber according to the present invention.
4 is a perspective view showing a state in which a second guide rail and a second spring fixing portion are installed on an upper plate of a three-dimensional seismic isolation device equipped with a vibration proof rubber according to the present invention.
5 is a view showing the internal transparency of the three-dimensional vibration isolator equipped with the anti-vibration rubber according to the present invention.
6 is a partially enlarged view of a vibration damping member and a vibration-damping rubber of a three-dimensional vibration isolation device provided with the vibration-proof rubber according to the present invention.
7 is a test report of a three-dimensional seismic isolation device equipped with an anti-vibration rubber according to the present invention.

The present invention relates to a three-dimensional seismic isolation device designed to prevent interference between springs for damping vibration and to cope with vibrations in a vertical direction. The three-dimensional seismic isolation device includes a first and a second spaced apart first and second spaced- A lower plate 100 having a spring fixing part 101; A first guide rail 110 having a straight shape and fixed to the upper end of the lower plate 100 so that the central portion thereof coincides with the center of the lower plate 100; The first plate 121 on the upper side and the second plate 122 on the lower side are spaced apart from each other by four shafts 123 arranged in a cross shape to form a hollow portion, and the length of the first guide rail 110 A lower slider 124 to be fastened to the first guide rail 110 is fixed to the lower end of the second plate 122 so that the upper slider 125 can slide along the first plate 121 A vibration damping member 120 fixedly installed on an upper end of the vibration damping member 120; An upper plate 130 supported by the vibration damping member 120 and provided with a second spring fixing portion 131 protruding downward at one side and the other side spaced from the center by a predetermined distance; A second guide rail 140 fixed to a lower end of the upper plate 130 and having a central portion aligned with a center portion of the upper plate 130 and having a straight shape in which the upper slider 125 is fastened; A plurality of spring members 150 each having one end connected to the four shafts 123 and the other end connected to the first spring fixing portion 101 or the second spring fixing portion 131; A vibration proof rubber (160) provided on the hollow portion to be closely fixed to a lower end of the first plate (121) and an upper end of the second plate (122); Dimensional vibration isolation device having an anti-vibration rubber.

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

First, as shown in FIG. 1, a three-dimensional seismic isolation system equipped with an anti-vibration rubber according to the present invention is provided with a first spring fixing part 101 which protrudes upward at one side and the other side, And a lower plate (100).

The lower plate 100 is composed of various plate types and is fixed to the lower end surface of the bottom plate and the support plate so as not to move so as to transmit vibration caused by an earthquake or the like to the whole of the isolation device. , A structure or an object located above the seismic isolation device supports the vibration damping means for vibration damping so as to minimize the damage due to the vibration.

As shown in FIG. 2, a linear guide rail 110 is fixed to the upper end of the lower plate 100 so that the central portion of the guide rail 110 is aligned with the center of the lower plate 100, A lower slider 124 fixed to the first guide rail 110 is fixed to the lower end of the first guide rail 110 so as to be slidable along the longitudinal direction of the first guide rail 110, (120) is fastened.

3, the vibration damping member 120 is separated from the first vibration damping member 120 by four shafts 123 arranged in a cross shape in the upper first plate 121 and the lower second plate 122, And the upper slider 125 is fixed to the upper end of the lower slider 124. The lower slider 124 is fixed to the lower slider 124 and the upper slider 125 is fixed to the upper end of the lower slider 124, And constitute a central portion.

One end portion of the spring member 150 provided to damp the vibration in the horizontal direction transmitted to the seismic isolation device is provided on the two axes 123 of the four shafts 123 provided in the vibration damping member 120 And the other end of the spring member 150 is connected to the first spring fixing part 101 so that the vibration damping member 120 moved in one direction or the other direction along the first guide rail 110 And the second spring 123 is disposed on the other of the four axes 123 of the vibration damping member 120 so as to be moved back to the center of the first guide rail 110, And one end portion of the other two spring members 150 not connected to the spring member 101 are connected.

The spring member 150 effectively damps the vibration in the horizontal direction transmitted to the seismic isolation device and immediately restores the vibration damping member 120 moved in one direction or the other direction by the vibration, A tensile spring having a modulus of elasticity suitable for protecting a structure or an object located above the vibration member from vibrations is preferable. In order to effectively cope with both relatively small vibrations and relatively large vibrations, a plurality of Tension spring can be connected.

As shown in FIG. 4, the three-dimensional vibration isolator of the present invention is supported by the vibration damping member 120, and protrudes downward at one side and the other side of the vibration isolator 120, And an upper plate 130 having a second spring fixing part 131 formed thereon.

The upper plate 130 is formed in a plate shape in the same manner as the lower plate 100 so that a structure or object protected by the vibration isolating device can be positioned on the upper surface, A second guide rail 140 of a straight line shape is fixedly installed so that the second guide rail 140 is aligned with the center of the upper plate 130.

5, an upper slider 140 is fastened to an upper end of the vibration damping member 120 to be coupled to the second guide rail 140 so that the vibration damping member 120 and the upper plate 130 can be connected to each other, And the second guide rail 140 is installed in a direction intersecting the first guide rail 110. When vibration occurs due to an earthquake or the like, the lower plate 100 alone or the lower plate 100, Only the vibration damping member 120 moves in accordance with the vibration so that the vibrations transmitted to the structure or the object located above the vibration damping device can be minimized.

That is, when the direction of the vibration transmitted to the seismic isolation device by the earthquake or the like is the same as the longitudinal direction of the first guide rail 110, the lower plate 100 vibrates in both directions, The lower plate 100 and the vibration damping member 120 can be positioned in the opposite directions when the direction of the vibration transmitted to the seismic device is the same as the longitudinal direction of the second guide rail 140. [ But the top plate 130 can be positioned in place with minimal vibration.

However, the vibration transmitted to the seismic isolation device by an earthquake or the like is not always formed in the longitudinal direction of the first guide rail 110 or in the same direction as the longitudinal direction of the second guide rail 140, When the direction of the vibration transmitted to the first guide rail 110 is formed to be offset from the longitudinal direction of the first guide rail 110 or the longitudinal direction of the second guide rail 140, the lower plate 100 and the vibration- And is configured to protect a structure or an object placed above the seismic isolation device by damping vibration by reciprocating a certain distance.

At this time, one end portion is connected to the four shafts 123 of the vibration damping member 120, but the other end portion of the spring member 150, which is not connected to the first spring fixing portion 101, The vibration damping member 120 moved to one side or the other side along the second guide rail 140 is moved to the center of the second guide rail 140 again by the spring fixing unit 131, .

That is, a pair of springs (not shown) disposed in the same direction as the longitudinal direction of the first guide rail 110 among the four spring members 150 connected to the four shafts 123 provided in the vibration damping member 120, The member 150 determines the direction of movement of the vibration damping member 120 and the other pair of spring members 150 arranged in the same direction as the longitudinal direction of the second guide rail 140, The direction of the movement of the vibration isolating device is determined in a direction crossing each other, so that the vibration isolating device can cope with the vibration in the horizontal direction transmitted in various directions.

6, the three-dimensional seismic isolation device equipped with the anti-vibration rubber according to the present invention is installed in the hollow portion of the first plate 121 and the second plate 122 so as to be closely contacted with the lower end of the first plate 121 and the upper end of the second plate 122, And an anti-vibration rubber (160) provided on the base.

The vibration isolating rubber 160 is a component absorbing vibration in the vertical direction transmitted upward from the lower plate 100 so that the vibration isolating device can cope with the vibration in the vertical direction in addition to the vibration in the horizontal direction, NBR rubber having a hardness of A90, a specific gravity of 1.13, a tensile strength of 27 MPa and an elongation of 470%, a hardness of A70, a specific gravity of 1.6, a tensile strength of 12.7 MPa and an elongation of 370% NBR rubber having a tensile strength of 4.4 MPa and an elongation of 400%, a fluorine rubber having a hardness of A80, a specific gravity of 1.8, a tensile strength of 12.5 MPa and an elongation of 330%, a hardness of A60, a specific gravity of 1.9, a tensile strength of 10.8 MPa A silicone rubber having an elongation of 270%, a hardness of A70, a specific gravity of 1.2, a tensile strength of 7.4 MPa and an elongation of 300%, a hardness of A50, a specific gravity of 1.2, a tensile strength of 8.8 MPa and an elongation of 330% Silicone rubber, hardness A50, ratio Of 1.2, a tensile strength of 7.8 MPa and an elongation of 400%, a low elasticity rubber having a hardness of A57, a specific gravity of 1.3, a tensile strength of 8.3 MPa and an elongation of 810%, a hardness of A60, a specific gravity of 1.9, And an EPDM rubber having a hardness of A65, a specific gravity of 1.2, a tensile strength of 12.8 MPa and an elongation of 490%.

In order to confirm the performance of the anti-vibration rubber 160, a performance test of a three-dimensional vibration isolator equipped with the anti-vibration rubber according to the present invention was commissioned to Dongtan Co., Ltd., Korea. The hardness was A90, the specific gravity was 1.13, The experimental procedure and results of urethane rubber with tensile strength of 27 MPa and elongation of 470% are as follows.

First of all, the seismic equipments (hereinafter referred to as the test target equipments 1) and the vibration isolating equipments equipped with the anti-vibration rubber 160 (hereinafter referred to as the test equipments 2) without the vibration- And it was not fixed with a bolt.

In addition, a test weight of 1040 kg was placed on the upper part of the test target equipments 1 and 2, and the test target equipments 1 and 2 and the test weight were also not fixed with a separate fixing device.

Accelerometers were attached to each shaker table, test weight, and test facility 1 and 2, and the response spectrum of the zone 2 level level presented in GR-63-CORE 5.4.1 Earthquake Test (Issue 4, April 2012) was used Thus, only the vibration test in the vertical direction was conducted.

The seismic test was conducted by applying a margin of 10% so that the test response spectrum covered the required response spectrum. The total test time was about 30 seconds and the earthquake was maintained for more than 25 seconds.

The measured test data was analyzed with a damping coefficient of 2%, and the frequency range from 1 Hz to 50 Hz was analyzed at 1/6 octave intervals. As a result, as shown in FIG. 7, The maximum acceleration measured by the accelerometer is 0.601 g, which is used as a reference value.

Also, the maximum acceleration measured by the accelerometer attached to the test target facility 1 is 0.619 g, the response rate with respect to the reference value is 103%, and the maximum acceleration measured by the accelerometer attached to the test weight of the test target facility 1 is 0.659 g , And the response rate to the reference value is 109.6%.

Also, the maximum acceleration measured by the accelerometer attached to the shaker table of the test target facility 2 is 0.599 g, and when it is used as the reference value, the maximum acceleration measured by the accelerometer attached to the test target facility 2 is 0.560 g, The response rate to the reference value is 93.4%, and the maximum acceleration measured by the accelerometer attached to the test weight of the test object 2 is 0.610 g, and the response rate to the reference value is 101.8%.

Therefore, it can be seen that the difference between the response rates of the tested equipment 1 and 2 is about 7.8%, which shows that the tested equipment 2 exhibits superior vertical vibration damping effect as compared with the equipment 1 to be tested.

The embodiments described above are provided by way of example for the purpose of enabling a person skilled in the art to sufficiently transfer the technical idea of the present invention to a person skilled in the art, But may be embodied in other forms without limitation.

In order to clearly explain the present invention, parts not related to the description are omitted from the drawings, and in the drawings, the width, length, thickness, etc. of the components may be exaggerated or reduced for convenience.

Further, like reference numerals designate like elements throughout the specification.

100: lower plate 101: first spring fixing portion
110: first guide rail 120: vibration-
121: First Edition 122: Second Edition
123: shaft 124: lower slider
125: upper slider 130: upper plate
131: second spring fixing portion 140: second guide rail
150: spring member 160: anti-vibration rubber

Claims (3)

A lower plate 100 having a first spring fixing part 101 protruding upward at one side and a second side spaced from the center by a predetermined distance;
A first guide rail 110 having a straight shape and fixed to the upper end of the lower plate 100 so that the central portion thereof coincides with the center of the lower plate 100;
The first plate 121 on the upper side and the second plate 122 on the lower side are spaced apart from each other by four shafts 123 arranged in a cross shape to form a hollow portion, and the length of the first guide rail 110 A lower slider 124 to be fastened to the first guide rail 110 is fixed to the lower end of the second plate 122 so that the upper slider 125 can slide on the first plate 121 A vibration damping member 120 fixedly installed on an upper end of the vibration damping member 120;
An upper plate 130 supported by the vibration damping member 120 and provided with a second spring fixing portion 131 protruding downward at one side and the other side spaced from the center by a predetermined distance;
A second guide rail 140 fixed to a lower end of the upper plate 130 and having a central portion aligned with a center portion of the upper plate 130 and having a straight shape in which the upper slider 125 is fastened;
A plurality of spring members 150 each having one end connected to the four shafts 123 and the other end connected to the first spring fixing portion 101 or the second spring fixing portion 131;
A vibration proof rubber (160) provided on the hollow portion to be closely fixed to a lower end of the first plate (121) and an upper end of the second plate (122); And a control unit,
The anti-vibration rubber (160)
NBR rubber having a hardness of A90, a specific gravity of 1.13, a tensile strength of 27 MPa and an elongation of 470%, a hardness of A70, a specific gravity of 1.6, a tensile strength of 12.7 MPa and an elongation of 370% NBR rubber having a tensile strength of 4.4 MPa and an elongation of 400%, a fluorine rubber having a hardness of A80, a specific gravity of 1.8, a tensile strength of 12.5 MPa and an elongation of 330%, a hardness of A60, a specific gravity of 1.9, a tensile strength of 10.8 MPa A silicone rubber having an elongation of 270%, a hardness of A70, a specific gravity of 1.2, a tensile strength of 7.4 MPa and an elongation of 300%, a hardness of A50, a specific gravity of 1.2, a tensile strength of 8.8 MPa and an elongation of 330% Silicone rubber having a hardness of A50, a specific gravity of 1.2, a tensile strength of 7.8 MPa and an elongation of 400%, a hardness of A57, a specific gravity of 1.3, a tensile strength of 8.3 MPa and an elongation of 810% A60, a specific gravity of 1.9, a tensile strength of 10.8 MPa and an elongation of 270% Free, three-dimensional seismic isolation device that is provided with a vibration-proof rubber, characterized in that the hardness of A65, a specific gravity of 1.2, a tensile strength of the configuration of any one of 12.8MPa and an elongation of 490 percent EPDM rubber.
The method according to claim 1,
The first guide rails 110 and the second guide rails 140 may be formed,
Are disposed on the lower plate (100) and the upper plate (130) so as to intersect with each other.





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