Elastomeric elastic support with improved durability and safety

Abstract

According to the present invention, the elastomeric elastic support comprises: a lower plate installed in a lower structure of a bridge; an upper plate installed in an upper structure of the bridge; and an elastic pad which has an elastic pad main body and a plurality of insertion plates provided in the elastic pad main body and is installed between the lower plate and the upper plate, wherein the upper plate has an upper plate main body installed in the upper structure of the bridge and a sliding plate provided on the lower portion of the upper plate main body, and is movably installed on the upper portion of the elastic pad; and the elastic pad has a fluorine resin panel provided on the upper portion of an elastic pad main body, and comprises a first and a second stopper respectively fixed to the left and the right side of the elastic pad to control movement of the upper plate. According to the present invention, durability degradation due to repeated loads can be prevented, and safety can be guaranteed even when a strong earthquake occurs.

Description

Elastomer-type elastic support with improved durability and safety

[0001] The present invention relates to an elastomeric elastic bearing, and more particularly, to an elastomeric elastic bearing having improved durability against repeated loads and safety against earthquakes.

[0002] Bridge supports are located between the substructure and superstructure (e.g. beams) of a bridge, transferring the load from the superstructure to the substructure, and adapting to earthquakes, wind speeds, and temperature changes to protect the bridge structure and ensure the safe operation of vehicles.

[0003] Meanwhile, the bridge support has an elastic support, and the double elastomeric elastic support (1) is provided with an elastic pad (1c) between a lower plate (1a) and an upper plate (1b), as shown in Fig. 1, and a plurality of metal plates (1c1) are provided inside the elastic pad (1c), and is installed between the lower structure (2) of the bridge and the upper structure (3) of the bridge.

[0004] Although this conventional elastomeric elastic support (1) has the advantages of excellent seismic isolation and simple structure, it has the disadvantage of a small range of motion, and thus, if a large earthquake occurs beyond the range of motion, it causes serious problems to the safety of the bridge.

[0005] For example, a conventional elastomeric elastic support (1) exhibits a seismic isolation function within a permissible range (design value) equal to the length of L1 when a lateral force within the allowable range is applied as in normal times (see Fig. 2). However, when a large lateral force, such as a strong earthquake, is applied, the support no longer exhibits a seismic isolation function and is damaged (destroyed).

[0006] Due to such problems, the conventional elastomeric elastic support (1) had to be made larger in volume to cope with strong earthquakes, which resulted in high manufacturing costs and limited scope of use.

[0007] In addition, when a vehicle passes through the conventional elastomeric elastic support (1) as a superstructure (3) of a bridge, a repeated load (fatigue load) is inevitably transmitted to the elastic pad (1c), which causes a decrease in the durability of the elastic pad (1c) due to the repeated load.

[0008] The present invention was invented to solve the above-mentioned problem, and the problem to be solved is to provide an 'elastomer-type elastic support' that prevents durability deterioration due to repeated loads and guarantees safety even when a strong earthquake occurs.

[0009] The solution to the first problem of the present invention for solving the above problem is as follows:

[0010] In an elastomeric elastic bearing, comprising: a lower plate installed on a lower structure of a bridge; an upper plate installed on a superstructure of a bridge; an elastic pad body made of an elastomeric material; and a plurality of insert plates provided on the elastic pad body and arranged in a stacked manner spaced apart from each other, and an elastic pad installed between the lower plate and the upper plate;

[0011] The upper plate has an upper plate body installed on the upper structure of the bridge, and a sliding plate provided on the lower part of the upper plate body, and is movably installed on the upper part of the elastic pad, and a protruding plate protruding upward is provided in the center of the upper plate body, and first and second sliding grooves are provided on the left and right sides of the upper plate body, respectively.

[0012] The elastic pad has a fluororesin panel on the upper part of the elastic pad,

[0013] The present invention is characterized by including first and second stoppers, which are respectively inserted into the first sliding groove of the upper plate body and the second sliding groove of the upper plate body and are installed opposite to each other on the upper left side of the elastic pad and the upper right side of the elastic pad to form a pair; first and second engaging portions which respectively protrude upward from the first and second engaging portions; and first and second protruding portions which are respectively provided on the upper side of the first and second engaging portions and arranged on the upper side of the upper plate body; and transmit lateral force from the lower plate to the upper plate when an earthquake occurs.

[0014]

[0015] In addition, the means for solving the second problem of the present invention is,

[0016] In terms of the means of solving the first task,

[0017] The first and second connecting portions are spaced apart from the inner surfaces of the first and second sliding grooves, respectively, or are in close contact with the inner surfaces of the first and second sliding grooves, respectively.

[0018] The first and second catches are spaced apart from the inner surface of the first and second sliding grooves, respectively, or are in close contact with the inner surface of the first and second sliding grooves, respectively.

[0019] It is characterized by.

[0020]

[0021] In addition, the solution to the third problem of the present invention is

[0022] In terms of the means of solving the first task,

[0023] It includes a fitting member inserted between the inner surface of the first sliding groove of the upper plate body and the first stopper to limit the movement of the first stopper, or inserted between the inner surface of the second sliding groove of the upper plate body and the second stopper to limit the movement of the second stopper.

[0024] It is characterized by.

[0025]

[0026] In addition, the solution to the fourth problem of the present invention is

[0027] In terms of the means of solving the first task,

[0028] It is characterized by having a foreign matter blocking plate installed on the left and right sides of the above protruding plate, respectively, to close the first and second sliding grooves of the upper plate body.

[0029]

[0030] In addition, the solution to the fifth problem of the present invention is

[0031] In terms of the means of solving the first task,

[0032] The above sliding plate is made of stainless steel,

[0033] Fluoropolymer panels are made of PTFE (Polytetrafluoroethylene).

[0034] It is characterized by.

[0035] The present invention, which solves the above-described problem, has the effect of preventing a decrease in durability due to repeated loads in normal times when a small lateral force is applied, and improving safety in times of earthquakes (strong earthquakes) when a large lateral force is applied.

[0036] In addition, the present invention has the effect of enabling miniaturization while ensuring excellent durability and safety.

[0037] In addition, the present invention has the effect of ensuring stability against a wide range of lateral forces by adding safety according to the movement distance of the upper plate (20) to the safety of the basic elastic pad (30), while also ensuring excellent safety against strong earthquakes.

[0038] In addition, the present invention organically combines the first and second stoppers (40, 40') with the upper plate (20) while being installed on the elastic pad (30), and exerts the above-described effect through this meaningful combination structure.

[0039] In addition, the present invention has the effect of allowing the upper plate (20) to be moved or fixed depending on whether the first and second sliding grooves (21a, 21a') of the upper plate (20) and the first and second stoppers (40, 40') are in close contact with each other, so that the elastomeric elastic support can be used as a movable or fixed type as needed. In addition, the present invention can vary (control) the movement direction of the upper plate (20) depending on which parts of the first and second sliding grooves (21a, 21a') of the upper plate (20) and the first and second stoppers (40, 40') are in close contact with each other, so that it can be applied to various bridge structures. For example, when the present invention is applied to a bridge having a curved main road, the outer side of the curved main road can be applied as a fixed type, and the inner side of the curved main road can be applied as a movable type. Here, the present invention can conveniently use an elastomeric elastic support in a movable or fixed form through a fitting member (50).

[0040] In addition, the present invention has the effect of preventing foreign substances from penetrating into the first and second sliding grooves (21a, 21a') of the upper plate (20) through the foreign substance blocking plate (60) when the elastomeric elastic support is used in a movable form, thereby enabling smooth operation when the elastomeric elastic support is used in a movable form.

[0041] Figures 1 and 2 are drawings for explaining conventional technology,

[0042] Figure 3 is a perspective view for explaining an elastomeric elastic support according to the first embodiment of the present invention.

[0043] Figure 4 is a partially exploded perspective view of Figure 3,

[0044] Figure 5 is a cross-sectional view taken along line X-X' of Figure 3,

[0045] Figure 6 is a partial cross-sectional view of Figure 3,

[0046] Figures 7 and 8 are drawings for explaining the operation of the first embodiment according to the present invention.

[0047] Figure 9 is a drawing for explaining a second embodiment of the present invention.

[0048] Figure 10 is a drawing for explaining a third embodiment of the present invention.

[0049] Figures 11 and 12 are drawings for explaining a fourth embodiment of the present invention.

[0050] The present invention is susceptible to various modifications and embodiments. Specific embodiments are illustrated and described in detail in the drawings. However, this is not intended to limit the present invention to specific embodiments, but rather to encompass all modifications, equivalents, and alternatives falling within the spirit and technical scope of the present invention.

[0051] The terminology used in this application is for the purpose of describing specific embodiments only and is not intended to limit the present invention.

[0052] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs.

[0053] Hereinafter, the 'elastomeric elastic support with improved durability and safety' according to the present invention will be described in detail so that a person having ordinary knowledge in the technical field to which the present invention pertains can easily practice it.

[0054]

[0055] FIG. 3 is a perspective view for explaining an elastomeric elastic support according to a first embodiment of the present invention, FIG. 4 is a partially exploded perspective view of FIG. 3, FIG. 5 is a cross-sectional view taken along the line X-X' of FIG. 3, and FIG. 6 is a partial side cross-sectional view of FIG. 3. The configuration of the present invention will be described with reference to FIGS. 3 to 6 as follows. Meanwhile, in the present invention, the directionality of the configuration of the present invention is explained by taking the X-axis direction in FIG. 3 as the front-back direction (axial direction), the Y-axis direction in FIG. 3 as the left-right direction (axial direction), and the Z-axis direction in FIG. 3 as the up-down direction.

[0056] The first embodiment of the present invention includes a lower plate (10), an upper plate (20), and an elastic pad (30), and further includes first and second stoppers (40, 40'), and some configurations are modified.

[0057] The above-described lower plate (10) is installed on the substructure of the bridge. In the present embodiment, the lower plate (10) may have a square plate shape, but its shape may be modified in various ways. In addition, in the present embodiment, the lower plate (10) may be made of a metal material, but its material may be modified in various ways. In addition, in the present embodiment, the lower plate (10) may be installed on the substructure of the bridge in various conventional ways.

[0058] The above upper plate (20) is installed on the upper structure of the bridge. In this embodiment, the upper plate (20) has an upper plate body (21) installed on the upper structure of the bridge, and a sliding plate (22) provided on the lower part of the upper plate body (21), and is movably installed on the upper part of the elastic pad (30).

[0059] The upper plate body (21) is provided with first and second sliding grooves (21a, 21a') on the left and right sides, respectively, and a protruding plate (21b) protruding upwards in the center. In the present embodiment, the first sliding groove (21a) is formed to be open to the left and up and down, and the second sliding groove (21a') is formed to be open to the right and up and down. In addition, in the present embodiment, the upper plate body (21) may have a plate shape, but the shape may be modified in various ways. In the present embodiment, the upper plate body (21) may be made of a metal material, but the material may be modified in various ways.

[0060] The above sliding plate (22) is made of stainless steel.

[0061] The above elastic pad (30) is provided with an elastic pad body (31) and a plurality of insert plates (32) provided in the elastic pad body (31), and is installed between the lower plate (10) and the upper plate (20). In addition, in the present embodiment, the elastic pad (30) is provided with a fluororesin panel (33) on the upper portion of the elastic pad (30).

[0062] The above elastic pad body (31) may be formed in the shape of a rectangular parallelepiped, a cylinder, or a prism. In the present embodiment, the elastic pad body (31) is formed of an elastomer material.

[0063] The above insertion plates (32) are stacked and arranged so as to be spaced apart from each other vertically. In the present embodiment, the insertion plate (32) located most downward among the plurality of insertion plates (32) is fixed (for example, bolted) to the lower plate (10), and the insertion plate (32) located most upward among the plurality of insertion plates (32) is fixed (for example, bolted) to the first and second stoppers (40, 40'). Meanwhile, in the present embodiment, the insertion plate (32) located most downward among the plurality of insertion plates (32) is positioned inside the elastic pad body (31) with its lower surface exposed, the insertion plate (32) located most upward among the plurality of insertion plates (32) is positioned outside the elastic pad body (31), and the other insertion plates (32) are positioned inside the elastic pad body (31). Meanwhile, in the present embodiment, the insertion plate (32) is typically made of a metal plate.

[0064] The above fluororesin panel (33) is provided on the upper part of the elastic pad (30). In the present embodiment, the fluororesin panel (33) may be made of PTFE (Polytetrafluoroethylene). In addition, in the present embodiment, the fluororesin panel (33) may be made of a circle or a regular polygon, and a plurality of concave grooves may be formed on the upper surface of the fluororesin panel (33). Meanwhile, in the present embodiment, the upper plate (20) may slide when the sliding plate (22) of the upper plate (20) and the fluororesin panel (33) come into contact.

[0065] The first and second stoppers (40, 40') are respectively fixed to the left and right sides of the elastic pad (30) to control the movement of the upper plate (20). In this embodiment, the first and second stoppers (40, 40') have first and second connecting portions (41, 41'), first and second stopping portions (42, 42'), and first and second protruding portions (43, 43').

[0066] The first and second connecting portions (41, 41') are inserted into the first sliding groove (21a) of the upper plate body (21) and the second sliding groove (21a') of the upper plate body (21), respectively, and are installed on the upper left side of the elastic pad (30) and the upper right side of the elastic pad (30), respectively, but are spaced apart from the inner surfaces of the first and second sliding grooves (21a, 21a') or are in close contact with the inner surfaces of the first and second sliding grooves (21a, 21a'), respectively. In the present embodiment, the first and second connecting portions (41, 41') are provided to be spaced apart from the inner surfaces of the first and second sliding grooves (21a, 21a'), respectively. In addition, in the present embodiment, the first and second connecting portions (41, 41') each have a plate shape. Meanwhile, in this embodiment, the first and second connecting parts (41, 41') can be installed on the elastic pad (30) using a bolting method.

[0067] The first and second catch portions (42, 42') protrude upward from the first and second connecting portions (41, 41'), respectively, but are spaced apart from the inner surfaces of the first and second sliding grooves (21a, 21a') or are in close contact with the inner surfaces of the first and second sliding grooves (21a, 21a'), respectively. In the present embodiment, the first and second catch portions (42, 42') are provided spaced apart from the inner surfaces of the first and second sliding grooves (21a, 21a'), respectively. In addition, in the present embodiment, the first and second catch portions (42, 42') each have a plate shape.

[0068] The first and second protrusions (43, 43') above protrude from the first and second catches (42, 42') to the right and left, respectively, and are positioned above the upper plate body (21). In the present embodiment, the first and second protrusions (43, 43') form a plate shape and can be mounted on the upper surface of the upper plate body (21).

[0069] Meanwhile, in this embodiment, a fitting member (50) may be additionally provided.

[0070] The above fitting member (50) is inserted (removed) between the inner surface of the first sliding groove (21a) of the upper plate body (21) and the first stopper (40) to limit the movement of the first stopper (40), or is inserted (removed) between the inner surface of the second sliding groove (21a') of the upper plate body (21) and the second stopper (40') to limit the movement of the second stopper (40').

[0071] For example, if the fitting member (50) is inserted only between the inner surface of the first sliding home (21a) and the left surface of the first stopper (40), the leftward movement of the upper plate (20) may be restricted.

[0072] In this embodiment, the fitting member (50) is described as being installed between the inner surface of the first sliding groove (21a) and the seat surface of the first stopper (40), but may be installed in various positions between the inner surface of the first sliding groove (21a) of the upper plate body (21) and the first stopper (40), and between the inner surface of the second sliding groove (21a') of the upper plate body (21) and the second stopper (40') as needed.

[0073] Meanwhile, in the present embodiment, when the fitting member (50) is installed between the inner surface of the first sliding groove (21a) of the upper plate body (21) and the first stopper (40) and between the inner surface of the second sliding groove (21a') of the upper plate body (21) and the second stopper (40'), it can be installed in the first and second connecting portions (41, 41') of the first and second stoppers (40, 40').

[0074]

[0075] FIG. 7 is a side view for explaining the sliding operation of the upper plate when a small external force (normal external force) is applied due to vehicle traffic, etc. in the first embodiment of the present invention, FIG. 8(a) is a side view for explaining the initial state before the elastomeric elastic support in the first embodiment of the present invention operates, and FIGS. 8(b) to 8(d) are drawings for explaining the operation of the elastomeric elastic support when a strong earthquake occurs in the first embodiment of the present invention. The operation of the first embodiment according to the present invention will be explained as follows with reference to FIGS. 7 and 8.

[0076] In this embodiment, when a vehicle passes over the upper structure of the bridge and a small lateral force (typically an external force) is applied while the elastomeric elastic support is installed, the upper plate (20) moves (slides) in the forward and backward direction within the length range L2 of FIG. 7.

[0077] At this time, the lateral force due to vehicle traffic is not transmitted to the elastic pad (30) due to the sliding action between the sliding plate (22) and the fluororesin panel (33).

[0078] Therefore, since the repetitive load (fatigue load) caused by frequent vehicle traffic is not directly transmitted to the elastic pad (30), it is possible to prevent problems from occurring in the elastic pad (30) due to the repetitive load caused by normal vehicle traffic.

[0079] Meanwhile, in this embodiment, when a large lateral force (external force) such as an earthquake is applied forward in a state as in Fig. 8(a), the lower plate (10) moves by a length of L3 as in Fig. 8(b) and then moves by a length of L4 as in Fig. 8(c).

[0080] Afterwards, when the lateral force continues to be applied, the lower plate (10) moves by the length of L1 as shown in Fig. 8(d), and at this time, the elastic pad (30) operates to provide a seismic isolation effect.

[0081] That is, in this embodiment, when a large lateral force such as an earthquake is applied, in addition to the safety effect equivalent to the length L1 due to the deformation of the elastic pad (30), a safety effect equivalent to the length L4 due to the movement (sliding) of the upper plate (20) can be expected. (See L5 of Fig. 8(d))

[0082] However, in the case of conventional elastic bearings, since all lateral forces are transmitted to the elastic bearing, the safety effect occurs only for the length L1, as shown in Fig. 2.

[0083] That is, this embodiment exhibits a greater safety range than conventional elastic bearings when a lateral force such as an earthquake is applied. (See comparison of L5 in Fig. 8(d) and L1 in Fig. 2)

[0084] Accordingly, in the past, in order to expect a wide range of safety as in the present embodiment, there was a problem that the size of the elastic support had to be large, but in the present embodiment, even if it has a small size (even if it is miniaturized), excellent safety can be secured.

[0085] Meanwhile, in this embodiment, it was explained that the lateral force acts forward, but the same effect as above occurs even if the lateral force acts backward.

[0086] In this way, the present embodiment can be expected to have the effect of preventing durability degradation due to repeated loads in normal times when a small lateral force is applied, improving safety in times of earthquakes (strong earthquakes) when a large lateral force is applied, and being manufactured in a miniaturized form to perform these functions.

[0087]

[0088] FIG. 9 is a perspective view for explaining a second embodiment of the present invention. Referring to FIG. 9, the second embodiment of the present invention will be explained as follows.

[0089] In this embodiment, the same structure as the first embodiment is formed, but a foreign substance blocking plate (60) is additionally provided.

[0090] The above foreign substance blocking plate (60) is installed on the left and right sides of the protruding plate (21b), respectively, to close the first and second sliding grooves (21a, 21a') of the upper plate body (21).

[0091] The above foreign substance blocking plate (60) prevents foreign substances from entering the first and second sliding grooves (21a, 21a') of the upper plate (20) when the elastomeric elastic support of the present invention is used in a movable manner, thereby preventing the movement (sliding) operation of the upper plate (20) from being performed smoothly.

[0092]

[0093] FIG. 10 is a perspective view for explaining a third embodiment of the present invention. Referring to FIG. 10, the third embodiment of the present invention will be explained as follows.

[0094] In this embodiment, the same structure as the first embodiment or the second embodiment is formed, but some structures are modified.

[0095] In this embodiment, the first and second stoppers (40, 40') are fixed to the left and right sides of the elastic pad (30), respectively, so that when controlling the movement of the upper plate (20), the upper plate (20) is controlled so as not to move.

[0096] That is, in the present embodiment, the first and second stoppers (40, 40') are tightly inserted into the first and second sliding grooves (21a, 21a') of the upper plate (20), thereby limiting the forward movement of the upper plate (20).

[0097]

[0098] FIG. 11 and FIG. 12 are drawings for explaining an elastic pad according to a fourth embodiment of the present invention. Referring to FIG. 11 and FIG. 12, the elastic pad according to the fourth embodiment of the present invention will be explained as follows.

[0099] In this embodiment, the same structure as one of the first to third embodiments is formed, but the elastic pad (30) is deformed.

[0100] The elastic pad (30) according to the present embodiment may have a cylindrical shape or a square cylindrical shape. That is, the elastic pad (30) according to the present embodiment may be an LRB (Lead Rubber Bearing) pad type formed in a regular polygonal or circular shape.

[0101] In this embodiment, if the elastic pad (30) is a square column (see Fig. 11), lead can be filled inside in a cylindrical shape.

[0102] In this embodiment, the elastic pad (30) may have an elastic shear modulus of 1.15 MPa or more. In this case, sufficient seismic isolation performance can be secured while simultaneously preventing the elastic pad (30) from being deformed.

[0103]

[0104] As described above, the present invention has the effect of preventing a decrease in durability due to repeated loads in normal times when a small lateral force is applied, and improving safety in times of earthquakes (strong earthquakes) when a large lateral force is applied.

[0105] In addition, the present invention has the effect of enabling miniaturization while ensuring excellent durability and safety.

[0106] In addition, the present invention has the effect of ensuring stability against a wide range of lateral forces by adding safety according to the movement distance of the upper plate (20) to the safety of the basic elastic pad (30), while also ensuring excellent safety against strong earthquakes.

[0107] In addition, the present invention organically combines the first and second stoppers (40, 40') with the upper plate (20) while being installed on the elastic pad (30), and exerts the above-described effect through this meaningful combination structure.

[0108] In addition, the present invention has the effect of allowing the upper plate (20) to be moved or fixed depending on whether the first and second sliding grooves (21a, 21a') of the upper plate (20) and the first and second stoppers (40, 40') are in close contact with each other, so that the elastomeric elastic support can be used as a movable or fixed type as needed. In addition, the present invention can vary (control) the movement direction of the upper plate (20) depending on which parts of the first and second sliding grooves (21a, 21a') of the upper plate (20) and the first and second stoppers (40, 40') are in close contact with each other, so that it can be applied to various bridge structures. For example, when the present invention is applied to a bridge having a curved main road, the outer side of the curved main road can be applied as a fixed type, and the inner side of the curved main road can be applied as a movable type. Here, the present invention can conveniently use an elastomeric elastic support in a movable or fixed form through a fitting member (50).

[0109] In addition, the present invention has the effect of preventing foreign substances from penetrating into the first and second sliding grooves (21a, 21a') of the upper plate (20) through the foreign substance blocking plate (60) when the elastomeric elastic support is used in a movable form, thereby enabling smooth operation when the elastomeric elastic support is used in a movable form.

Claims

1. An elastomeric elastic bearing comprising: a lower plate installed on a lower structure of a bridge; an upper plate installed on a superstructure of a bridge; an elastic pad body made of an elastomeric material; and a plurality of insert plates provided on the elastic pad body and arranged in a stacked manner spaced apart from each other, and an elastic pad installed between the lower plate and the upper plate; The upper plate has an upper plate body installed on the upper structure of the bridge, and a sliding plate provided on the lower part of the upper plate body, and is movably installed on the upper part of the elastic pad, and a protruding plate protruding upward is provided in the center of the upper plate body, and first and second sliding grooves are provided on the left and right sides of the upper plate body, respectively. The elastic pad has a fluororesin panel on the upper part of the elastic pad, An elastomeric elastic bearing characterized by comprising first and second stoppers, each of which is inserted into a first sliding groove of an upper plate body and a second sliding groove of an upper plate body, and is installed opposite to the upper left side of an elastic pad and the upper right side of an elastic pad to form a pair; first and second engaging portions which protrude upward from the first and second engaging portions, respectively; and first and second protruding portions which are provided on the upper portions of the first and second engaging portions and are respectively arranged on the upper portion of the upper plate body; and which transmit a lateral force from a lower plate to the upper plate when an earthquake occurs.

2. In paragraph 1, The first and second connecting portions are spaced apart from the inner surfaces of the first and second sliding grooves, respectively, or are in close contact with the inner surfaces of the first and second sliding grooves, respectively. The first and second catches are spaced apart from the inner surface of the first and second sliding grooves, respectively, or are in close contact with the inner surface of the first and second sliding grooves, respectively. An elastomeric elastic support characterized by:

3. In paragraph 1, It includes a fitting member inserted between the inner surface of the first sliding groove of the upper plate body and the first stopper to limit the movement of the first stopper, or inserted between the inner surface of the second sliding groove of the upper plate body and the second stopper to limit the movement of the second stopper. An elastomeric elastic support characterized by:

4. In paragraph 1, An elastomeric elastic support characterized by having a foreign substance blocking plate installed on the left and right sides of the above-mentioned protruding plate, respectively, to close the first and second sliding grooves of the upper plate body.

5. In paragraph 1, The above sliding plate is made of stainless steel, Fluoropolymer panels are made of PTFE (Polytetrafluoroethylene). An elastomeric elastic support characterized by:

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