A seismic isolation device

Abstract

This invention relates to a vibration isolation device, and more particularly to a sliding seat (100) comprising a sliding base (100) forming an upper side surface on its upper side surface, and a sliding body (200) resting above the upper side surface of the sliding base (100). At least four sliding grooves (122) are formed on the upper side surface of the sliding base (100) in a radially arranged manner at equal intervals, recessed to a certain depth from the center towards the edge to form grooves. Furthermore, an annular recess of a certain diameter is formed on the bottom surface of the sliding body (200). A grooved sliding ring (222) is provided, and a sliding ball (230) is installed thereon, which keeps the upper side of the sliding seat (100) and the bottom surface of the sliding body (200) at a certain distance apart by being simultaneously received into the sliding groove (122) and the sliding ring (222), thereby allowing the sliding seat (100) and the sliding body (200) to move relative to each other in the horizontal direction by means of the sliding ball (230) and thereby absorbing the vibration caused by the earthquake.

Description

Technical Field

[0001] This invention relates to a seismic isolation device that can prevent structural damage from earthquakes by absorbing vibrations. Background Technology

[0002] During an earthquake, vertical or horizontal vibrations are transmitted to structures such as buildings, with horizontal vibrations causing severe shaking. Stronger vibrations can cause partial damage to the structure, reducing its safety and, in the worst cases, even leading to collapse. Therefore, seismic isolation devices are necessary to prevent earthquake damage. As described above, these devices support the structure under normal conditions and absorb the vibrations during an earthquake, thus preventing damage.

[0003] Republic of Korea Patent No. 10-1737347-0000

[0004] Republic of Korea Patent No. 10-1984895-0000

[0005] The purpose of this invention is to provide a seismic isolation device that can effectively absorb vibrations applied to a structure in the event of an earthquake, thereby protecting the structure.

[0006] This invention provides a seismic isolation device, including a sliding seat and a sliding body resting on the upper side of the sliding seat. At least four sliding grooves are formed on the upper side of the sliding seat, arranged radially at the same spacing, with recesses of a certain depth from the center to the edge. A sliding ring with a certain diameter annular recess is formed on the bottom surface of the sliding body. A sliding ball is provided between the sliding seat and the sliding body, which, by being simultaneously received by the sliding grooves and the sliding ring, keeps the upper side of the sliding seat and the bottom surface of the sliding body at a certain distance. This allows the sliding seat and the sliding body to move relative to each other in the horizontal direction by means of the sliding ball, thereby absorbing the vibrations caused by earthquakes.

[0007] This invention enables the effective absorption of vibrations applied to a structure during an earthquake, thereby protecting the structure's safety during an earthquake. Attached Figure Description

[0008] Figure 1 This is a schematic diagram illustrating the installation of seismic isolation devices within a structure.

[0009] Figure 2This is an illustrative diagram showing the main components of the vibration isolation device to which the present invention is applied.

[0010] Figure 3 This is an exploded view illustrating the main components of the vibration isolation device to which the present invention is applied.

[0011] Figure 4 , 5 This is an illustrative diagram illustrating the relative motion between the sliding seat and the sliding body to which the present invention is applied.

[0012] Figure 6 This is an illustrative diagram showing the state in which multiple sliding rings are formed in the vibration isolation device to which the present invention is applied.

[0013] Figure 7 This is an example diagram illustrating the state in which an auxiliary sliding body is formed in the vibration isolation device to which the present invention is applied.

[0014] [Symbol Explanation]

[0015] 10: Seismic isolation device

[0016] 100: Glide Seat

[0017] 122: Sliding groove

[0018] 140: Movement restriction slot

[0019] 142: Anti-tipping plate cavity

[0020] 180: Joining plate

[0021] 200: Main body of the gliding vehicle

[0022] 222: Sliding Ring

[0023] 230: Sliding Ball

[0024] 242: Shaft Groove

[0025] 260: Movement restriction bump

[0026] 262: Anti-tipping board

[0027] 300: Assisted gliding main body

[0028] 400: Elastic Pad

[0029] 500: Support base

[0030] 600: Bolt

[0031] 700: Structural support base

[0032] 740: Shaft

[0033] 742: Shaft Block

[0034] 800: Protective film Detailed Implementation

[0035] Next, please refer to Figures 1 to 7 The present invention will be described in detail.

[0036] Figure 1 This is a schematic diagram illustrating the installation of seismic isolation devices within a structure.

[0037] As shown in the figure, the seismic isolation device 10 of the present invention is installed to isolate the horizontal movement of the structure from the foundation, and is installed at a position in the structure that bears the vertical load. It can be installed at the lower end of the support column of the structure.

[0038] Figure 2 This is an illustrative diagram showing the main components of the vibration isolation device to which the present invention is applied. Figure 3 This is an exploded view illustrating the main components of the vibration isolation device to which the present invention is applied.

[0039] The vibration isolation device 10 of the present invention includes, as its main components, a sliding seat 100, a sliding body 200, and a sliding ball 230.

[0040] The slide seat 100 is formed with a certain thickness, and its upper side can be formed in the shape of a spherical surface that is concave to the lower side. The slide seat 100 can be a disc shape formed with a certain thickness, but is not limited to this, and can also be a polygonal disc structure.

[0041] A sliding groove 122, which is recessed from the center towards the edge, is formed on the upper side of the sliding seat 100. The sliding groove 122 is formed with a certain length, and the shape of the groove can be an arc shape or a trapezoidal shape, and it can be formed to a position close to the edge of the upper side of the sliding seat 100. As described above, multiple sliding grooves 122 are formed and arranged radially. Multiple sliding grooves 122 are formed at the same interval, and preferably, forming more than three can ensure the balance of force.

[0042] The sliding body 200 is formed with a certain thickness and area and is placed on the upper side of the sliding seat 100. The bottom surface of the sliding body 200 adopts a shape corresponding to the upper side of the sliding seat 100. When the upper side of the sliding seat 100 is formed with a downwardly concave spherical shape, it is correspondingly formed with a convex spherical shape.

[0043] A sliding ring 222 of a certain diameter is formed on the bottom surface of the sliding body 200. The sliding ring 222 is formed in a circular shape with its center located at the center of the bottom surface of the sliding body 200, and is formed by creating a groove in the bottom surface of the sliding body 200.

[0044] The sliding ring 222 can be formed by concentrically arranging multiple rings with different diameters. Furthermore, the shape of the groove forming the sliding ring 222 can be an arc shape, a trapezoidal shape, or the like.

[0045] As described above, the sliding groove 122 formed on the upper side of the sliding seat 100 and the sliding ring 222 on the sliding body 200 will intersect each other when the sliding body 200 is placed on the upper side of the sliding seat 100.

[0046] The sliding ball 230 is made of a material with high tensile and yield strength, such as metal, and is installed at the intersection of the sliding groove 122 and the sliding ring 222. In this way, the sliding ball 230 can be installed in a manner that allows it to be simultaneously housed in the sliding groove 122 and the sliding ring 222, thereby supporting the sliding body 200 by means of the sliding ball 230 installed on the sliding groove 122.

[0047] After the sliding ball 230 is installed, the upper side of the sliding base 100 and the bottom surface of the sliding body 200 will remain at a certain distance. This can be achieved by selecting the specifications of the sliding ball 230, i.e., the diameter of the sliding ball 230, which allows the upper side of the sliding base 100 and the bottom surface of the sliding body 200 to maintain a certain distance.

[0048] The number of intersections between the sliding grooves 122 and the sliding rings 222 varies depending on the number of these two types of grooves. For example, as the number of sliding grooves 122 or sliding rings 222 increases, the number of intersections also increases, thus increasing the number of sliding balls 230 installed. As described above, increasing the number of sliding balls 230 distributed the load, thereby improving the load-bearing capacity. Therefore, the number of sliding grooves 122 or sliding rings 222 and the number of sliding balls 230 installed can be determined accordingly.

[0049] Furthermore, the present invention can employ a configuration that prevents the sliding body 200 from detaching from the upper side of the sliding seat 100. This can be achieved through a movement limiting groove 140 formed in the center of the upper side of the sliding seat 100 and a movement limiting protrusion 260 formed on the bottom surface of the sliding body 200.

[0050] The movement limiting groove 140 is a groove formed with a certain depth and diameter, while the movement limiting protrusion 260 is formed with a diameter smaller than that of the movement limiting groove 140. Therefore, although the movement limiting protrusion 260 can move to a certain extent within the movement limiting groove 140, even in the event of horizontal vibration, the movement limiting protrusion 260 can be prevented from disengaging from the movement limiting groove 140, thereby preventing the sliding body 200 from detaching from the upper side of the sliding seat 100.

[0051] In the configuration described above, an anti-tipping component may be provided to prevent the sliding body 200 placed on the sliding seat 100 from tipping over.

[0052] The anti-tipping component may include a disc-shaped anti-tipping plate 262 formed at the lower end of the movement limiting protrusion 260 and an anti-tipping plate cavity 142 formed on the movement limiting groove 140. The anti-tipping plate cavity 142 has ample space for the movement of the anti-tipping plate 262 and its entrance is narrow. Thus, although the anti-tipping plate 262 can move within the anti-tipping plate cavity 142, it can prevent detachment, thereby preventing the sliding body 200 from tipping over. In the configuration described above, since the anti-tipping plate cavity 142 is formed on the sliding seat 100, the anti-tipping plate 262 can be housed within the anti-tipping plate cavity 142 by assembling the sliding seat 100 in two halves along the height direction with the anti-tipping plate cavity 142 as a reference. For example, a structure can be adopted in which the bottom surface of the sliding seat 100 is formed by a detachably coupled connecting plate 180, and the bottom surface of the anti-tipping plate cavity 142 is formed by the connecting plate 180. In the configuration described above, the anti-tipping plate 262 is inserted into the anti-tipping plate cavity 142 from the underside of the slide seat 100 when the connecting plate 180 is separated from the slide seat 100, and then engages with the movement restriction protrusion 260.

[0053] Based on the basic configuration described above, the vibration isolation device 10 to which this invention is applied can take the sliding seat 100 and the sliding body 200 described above as the main components, and further equip some or all of the elastic pad 400, support seat 500, structural support seat 700 and protective film 800.

[0054] An elastic pad 400 is installed on the underside of the slide seat 100 and provides elastic support to the slide seat 100. The elastic pad 400 can be formed using an elastic material such as rubber or polyurethane and is formed with a certain area and thickness, thereby elastically absorbing vibrations in the vertical direction.

[0055] The support base 500 is disc-shaped and has an elastic pad 400 mounted on its upper side to support the elastic pad 400. A groove is formed on the upper side of the support base 500 for mounting the elastic pad 400, thereby restricting the movement of the elastic pad 400 and preventing it from sliding. The groove described above can also be formed on the bottom surface of the sliding base 100 to clamp the elastic pad 400 from both the upper and lower sides.

[0056] The support base 500 and the sliding base 100 can be connected by bolts 600 with an elastic pad 400 in between. Multiple bolts 600 can be arranged concentrically at certain intervals to connect the sliding base 100 and the elastic pad 400. At this time, while the bolts 600 are connected in a vertically movable state, springs are embedded within them, allowing the sliding base 100 to move vertically according to the contraction and expansion of the elastic pad 400.

[0057] The structural support base 700 is formed to connect to the upper side of the sliding body 200 and is used to support the structure. The structural support base 700 is formed in a disc shape with a certain thickness, and its upper side is configured to support the structure. A shaft 740 with a spherical shaft block 742 formed at its lower end protrudes downward, so that the shaft 740 is engaged in a state in which it can rotate within the shaft groove 242 formed in the sliding body 200. In this way, the structural support base 700 is placed in a state in which it can rotate within the sliding body 200.

[0058] The protective film 800 is a stretchable film, and may be partially formed in a corrugated shape. The protective film 800 provides protection by housing the slide seat 100 and the slide body 200 inside. When vibration occurs, the protective film 800 can naturally expand and contract, so it does not hinder the vibration absorption of the vibration isolation device of the present invention.

[0059] With the elastic pad 400, support base 500, and structural support base 700 provided, the lower end of the protective film 800 is fixed to the support base 500 or sliding base 100, while the upper end is fixed to the structural support base 700, thereby providing containment and protection for all or part of the structure. The protected objects can include dust, foreign objects, heat, flames, and moisture. By protecting the structure from various external sources of contamination, the vibration isolation device of this invention can function correctly in any environment, while also maximizing its service life.

[0060] Figure 4 , 5 This is an illustrative diagram illustrating the relative motion between the sliding seat and the sliding body to which the present invention is applied.

[0061] With the configuration described above, when the sliding body 200 is placed above the upper side of the sliding seat 100, the sliding body 200 and the sliding seat 100 can move freely relative to each other in the horizontal direction. That is, they can move relative to each other by means of the sliding balls 230a, 230b, 230c, and 230d.

[0062] like Figure 4 As shown, when the sliding seat 100 is pushed to the right in the attached figure by a force, the sliding body 200 will hardly move because it is fixed to the structure, while the sliding seat 100 will move to the right. At this time, the sliding balls 230a and 230b, which are housed in the sliding groove 122 formed on the same straight line as the direction of travel of the sliding seat 100, will roll in place and thereby cause the sliding seat 100 to move to the right, while the sliding balls 230c and 230d, which are housed in the sliding groove 122 that intersects the direction of travel of the force, will move along the corresponding sliding groove 122 and the sliding ring 222 towards the center of the sliding seat 100.

[0063] like Figure 5 As shown, when the sliding seat 100 is pushed in a direction different from the sliding groove 122, i.e., an oblique direction, because the sliding body 200 is fixed to the structure, the sliding body will not move, but the sliding seat 100 will move obliquely to the right. At this time, the sliding ball 230 will move along the sliding groove 122 and the sliding ring 222, thereby causing the sliding seat 100 to move obliquely.

[0064] With the configuration described above, even if the sliding seat 100 is subjected to forces in any direction, such as horizontal or torsional, due to earthquake vibrations while the sliding body 200 supports the structure, the phenomenon of movement of the sliding seat 100 being transmitted to the sliding body 200 can be reduced. Ultimately, the extent to which earthquake vibrations are transmitted to the structure supported by the sliding body 200 can be reduced.

[0065] Figure 6 This is an illustrative diagram showing the state in which multiple sliding rings are formed in the vibration isolation device to which the present invention is applied.

[0066] As described above, in the vibration isolation device to which this invention is applied, multiple sliding grooves 122 formed in the sliding seat 100 and sliding rings 222 formed in the sliding body 200 can be provided, therefore... Figure 6 The diagram illustrates a structure with two sliding rings 222. As described above, each sliding groove 122 will accommodate two sliding balls 230.

[0067] In addition, Figure 6 The diagram illustrates the case where the cross-section of the groove forming the sliding ring 222 is arc-shaped.

[0068] Figure 7 This is an example diagram illustrating the state in which an auxiliary sliding body is formed in the vibration isolation device to which the present invention is applied.

[0069] The vibration isolation device of the present invention can form an auxiliary sliding body 300 between the sliding seat 100 and the sliding body 200.

[0070] The auxiliary sliding body 300 is constructed of a disc or polygonal disc-shaped structure of a certain thickness, and its upper side structure is the same as that of the upper side of the sliding seat 100. Furthermore, its bottom structure is the same as that of the sliding body 200. Thus, the sliding seat 100 and the sliding body 200 are supported and rested on the upper side of the sliding seat 100 by sliding balls 230, while the sliding body 200 is supported and rested on the upper side of the auxiliary sliding body 300 by sliding balls 230. This allows for the formation of a multi-segment vibration isolation device composed of the auxiliary sliding body 300 and the sliding body 200.

[0071] In the configuration described above, the auxiliary sliding body 300 may also have the same configuration as the movement restriction groove 140, movement restriction protrusion 260, and anti-tipping plate 262 formed between the sliding seat 100 and the sliding body 200, and their functions are also the same.

Claims

1. A vibration isolation device, comprising a sliding seat (100) and a sliding body (200) resting on the upper side of the sliding seat (100). At least four sliding grooves (122) are formed on the upper side of the sliding seat (100) in a radial arrangement at the same spacing, forming grooves at a certain depth from the center to the edge. Furthermore, a sliding ring (222) with a groove formed by an annular recess of a certain diameter is formed on the bottom surface of the sliding body (200). A sliding ball (230) is provided between the sliding seat (100) and the sliding body (200) so that the upper side of the sliding seat (100) and the bottom surface of the sliding body (200) are kept at a certain distance apart by being simultaneously received in the sliding groove (122) and the sliding ring (222). This allows the sliding seat (100) and the sliding body (200) to move relative to each other in the horizontal direction by means of the sliding ball (230), thereby absorbing the vibrations caused by the earthquake.

2. The vibration isolation device according to claim 1, The upper side of the slide seat (100) is formed in a spherical shape that is concave to the lower side, and the bottom surface of the slide body (200) is formed in a spherical shape that is convex to the lower side, corresponding to the upper side of the slide seat (100).

3. The vibration isolation device according to claim 1, The sliding ring (222) is composed of multiple concentric rings with different diameters.

4. The vibration isolation device according to claim 1, A movement limiting groove (140) is formed in the center of the upper side of the sliding seat (100), and a movement limiting protrusion (260) corresponding to the movement limiting groove (140) is formed on the bottom surface of the sliding body (200). This prevents the movement restriction protrusion (260) from disengaging from the movement restriction groove (140) and thereby prevents the sliding body (200) from disengaging from the sliding seat (100).

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