KR20060016195A - Elastomeric bearing - Google Patents

Abstract

In the present invention, in manufacturing a laminated rubber bearing used in the seismic design of a structure such as a bridge, the laminated rubber bearing for a structure having improved usability by being configured to be processed and assembled more easily than the laminated rubber bearing according to the prior art. It is about.

In the present invention, as the laminated rubber bearings installed between the upper and lower structures, the supporting body 10 in which a reinforcing iron plate 11 made of a thin iron plate is laminated between the rubber layers 12, and the supporting body 10 An upper fixing plate 2 and a lower fixing plate 3 for installing and fixing between the upper structure and the lower structure; The uppermost and lowermost of the reinforcing iron plate 11 provided in the base body 10 is composed of a combined iron plate 13 made of a wider iron plate than the middle iron plate, the top of the base body 10 and At the lowermost portion, the width of the support body 10 is wider than the middle portion, so that the flange portion 14 protruding to the outside is formed; The flange portion 14 is formed through the plurality of through coupling holes 15 for coupling with the upper and lower fixing plates (2, 3); The upper and lower fixing plates 2 and 3 coupled to the upper and lower portions of the supporting body 10 are formed with insertion holes 4 formed in the flange portion 14 of the supporting body 10, respectively. After the upper and lower fixing plates 2 and 3 are respectively installed on the upper and lower portions of the main body 10, a fastening member 6 such as a bolt and the like is formed in the flange portion 14 of the support body 10 through the through coupling hole ( 15 through the through, and then inserted into the insertion hole (4) of the upper and lower fixing plates (2, 3) and screwed together, the support body 10 and the upper and lower fixing plates (2, 3) are integrally coupled Laminated rubber support is provided having a structure to be assembled.

Laminated rubber bearing, elastic bearing, bridge, rubber, iron plate, seismic

Description

Structure Laminated Rubber Bearings {Elastomeric Bearing}             

Figure 1a is a schematic exploded perspective view of a laminated rubber support generally used in the prior art.

1B is a schematic cross-sectional view of a laminated rubber support generally used in the related art.

Figure 2a is a schematic exploded perspective view of the elastic bearing (1) corresponding to one embodiment of the laminated rubber bearing according to the present invention.

FIG. 2B is a vertical sectional view of the elastic foot 1 shown in FIG. 2A.

FIG. 2C is a horizontal sectional view taken along the line A-A of FIG. 2A.

3 is a horizontal cross-sectional view corresponding to FIG. 2C of another embodiment of the elastic support illustrated in the present invention.

Figure 4 is a vertical cross-sectional view corresponding to Figure 2b for another embodiment of a laminated rubber support according to the present invention.

* Explanation of symbols for the main parts of the drawings *

1 elastic bearing

2 upper fixing plate

3 bottom fixing plate

10 support body

11 steel plate

12 rubber layers

13 iron plate

The present invention relates to laminated rubber bearings used for supporting structures such as bridges, and more particularly, to manufacturing laminated rubber bearings used in seismic design of structures such as bridges, and the like. The present invention relates to a laminated rubber bearing for a structure having improved usability by being configured to be easily processed and assembled.

For the seismic design of structures such as bridges, laminated rubber bearings are used as a means to lengthen the natural period of the structure. 1A and 1B are schematic exploded perspective views and cross-sectional views of elastic supports generally used as a type of conventional laminated rubber bearings.

As shown in Figure 1a and Figure 1b, in general, the conventional elastic support 100, the support body 110, the reinforcing iron plate 101 made of a thin iron plate between the rubber layer is laminated between the rubber layer 102, The base body 110 is composed of an upper fixing plate 121 and a lower fixing plate 122 for fixing by installing between the upper structure and the lower structure. In this conventional elastic support 100, the support body 110 and the upper and lower fixing plates 121, 122 are integrally coupled to each other by the following structure.

As described above, the interior of the support body 110 has a structure in which the reinforcing iron plate 101 is laminated at a predetermined interval between the rubber layers 102, as shown in FIG. 1B, in the interior of the support body 110. Located at the top and bottom of the provided reinforcing iron plate 101 is composed of a combined iron plate 103 made of a thicker steel plate than the middle iron plate. The coupling iron plate 103 is formed with a bolt coupling hole 104 to a predetermined depth for bolt coupling as will be described later.

Concave portions 123 are formed in the upper and lower fixing plates 121 and 122 coupled to the upper and lower portions of the supporting body 110 to respectively receive the lower portion of the supporting body 110. The upper and lower fixing plates 121 and 122 have bolt through holes 124 formed at positions corresponding to the bolt coupling holes 104 of the coupling iron plate 103. External surfaces of the upper and lower fixing plates 121 and 122 are provided with fasteners 130 for coupling with the upper structure and the lower structure, respectively.

As shown in FIG. 1B, after the upper and lower fixing plates 121 and 122 are respectively installed on the upper and lower portions of the support body 110, a fastening member 125 such as a bolt is used to connect the bolt through hole 124. The base body 110 and the upper and lower fixing plates 121 and 122 are integrally coupled by being penetrated and screwed into the bolt coupling hole 104 of the coupling iron plate 103. At this time, the groove 126 is concavely formed around the bolt through hole 124 so that the head of the fastening member 125 does not protrude to the outer surfaces of the upper and lower fixing plates 121 and 122.

In the conventional elastic support 100 as described above, the recess 123 on the upper surface of the upper and lower fixing plates 121 and 122 in order to position the support body 110 on the surface of the upper and lower fixing plates 121 and 122. It must be formed. In addition, the upper and lower fixing plates 121 and 122 are bolted to the bottom of the upper and lower fixing plates 121 and 122 so that the head of the fastening member 125, that is, the bolt head, does not protrude to the bottom of the upper and lower structures. A groove 126 must be formed around the through hole 124. However, in order to form concave portions 123 and grooves 126 in the concave shape on the surfaces of the upper and lower fixing plates 121 and 122, it is necessary to have a cumbersome processing operation, thereby increasing the manufacturing cost of the elastic support. There is a disadvantage. In particular, since the thickness of the upper and lower fixing plates 121 and 122 is reduced by forming the recesses 123 and the grooves 126, the supporting body 110 is isolated from the upper and lower fixing plates 121 and 122. There is a problem that is likely to be.

In addition, it is also very cumbersome to form the bolt coupling hole 104 in the coupling iron plate 103 provided in the base body 110 to a predetermined depth. In general, the bolt coupling hole 104 is made of equipment such as a drill. The coupling iron plate 103 is thicker than the reinforcing iron plate 102 provided in the support body 110, but the upper and lower fixing plates 121 are disposed. , 122) rather than thinner steel plates. Therefore, by using a device such as a drill, not only a considerable amount of skill is required to form a hole at a predetermined depth without completely penetrating the joining iron plate 103, but also a fine work is required for the machining work. The efficiency is low, and as a result, there is a disadvantage in that the time and cost required for manufacturing are increased.

The above disadvantages are not limited to the elastic support 100, but is also applied to the support and the like is inserted into the lead core as another kind of laminated rubber support.

The present invention has been proposed to overcome the disadvantages in processing and assembly of the conventional laminated rubber bearings as described above, by combining the support body and the upper and lower fixing plate through a new coupling structure, to constitute a laminated rubber bearing The purpose of the present invention is to improve the processability at the time of manufacturing each component, and to improve the efficiency at the time of combining each component so that the laminated rubber bearing can be manufactured at low cost ultimately.

In order to achieve the above object, in the present invention, as a laminated rubber bearing installed between the upper and lower structures, a supporting body in which a reinforcing iron plate made of a thin iron plate is laminated between rubber layers, and the supporting body is formed of an upper structure and a lower structure. An upper fixing plate and a lower fixing plate for installing and fixing therebetween; The top and bottom of the reinforcing iron plate provided in the base body is composed of a combined iron plate made of a wider iron plate than the middle plate, the width of the base body is wider than the middle portion at the top and bottom of the base body A flange portion protruding outward is formed; The flange portion is formed through the plurality of through coupling holes for coupling with the upper and lower fixing plate; The upper and lower fixing plates coupled to the upper and lower fixing plates of the supporting body are respectively formed with insertion holes formed in the flange portion of the supporting body, and the upper and lower fixing plates are respectively installed at the upper and lower fixing plates of the supporting body, such as bolts and the like. The fastening member is inserted into the through coupling hole formed in the flange portion of the support body, and then inserted into the insertion hole of the upper and lower fixing plates and screwed together, so that the support body and the upper and lower fixing plates are integrally combined and assembled. Laminated rubber support is provided having a.

In addition, in the present invention, as a modified embodiment of the laminated rubber bearing, the laminated rubber bearing is provided, characterized in that the flange portion is formed only on a portion of the outer peripheral surface of the support body.

Hereinafter, with reference to the accompanying drawings will be described the configuration and effect of the present invention. Hereinafter, as an example for description, but described as an elastic bearing which is a kind of laminated rubber bearing, the present invention is not limited to the elastic bearing.

FIG. 2A is a schematic exploded perspective view of the elastic support 1 according to the present invention, FIG. 2B is a vertical cross-sectional view of the elastic support 1 shown in FIG. 2A, and FIG. 2C is a horizontal cross-sectional view taken along the line AA of FIG. 2A. .

As shown in the figure, the elastic support 1 of the present invention, the support body 10 is laminated with a reinforcing iron plate 11 made of a thin iron plate between the rubber layer 12, and the support body 10 above It consists of an upper fixing plate 2 and a lower fixing plate 3 for installing and fixing between the structure and the lower structure. Looking at the structure of the support body 10 in more detail, as shown in Figure 2b and 2c, the upper and lowermost of the reinforcing steel plate 11 provided in the interior of the support body 10 is more than the middle iron plate It consists of a combined iron plate 13 made of a wide iron plate. Therefore, as shown in FIG. 2C, the supporting body 10 has the coupling iron plate 13 provided therein so that a flange portion 14 protruding to the outside is wider than the middle portion of the supporting body 10. do. The flange portion 14 has a plurality of through coupling holes 15 formed therein for coupling with the upper and lower fixing plates 2 and 3.

The upper and lower fixing plates 2 and 3 coupled to the upper and lower portions of the supporting body 10 are respectively inserted at positions corresponding to the through coupling holes 15 formed in the flange portion 14 of the supporting body 10. The ball 4 is formed. External surfaces of the upper and lower fixing plates 2 and 3 are provided with fasteners 5 for coupling with the upper structure and the lower structure, respectively.

As shown in FIG. 2B, after the upper and lower fixing plates 2 and 3 are respectively installed on the upper and lower portions of the supporting body 10, the fastening members 6 such as bolts are flange parts of the supporting body 10. After inserting through the through coupling hole 15 formed in the (14), and inserted into the insertion hole (4) of the upper and lower fixing plates (2, 3) and screwed together, the support body 10 and the upper and lower fixing plate (2, 3) are integrally combined.

In such a structure, the head of the fastening member 6, that is, the bolt head of the bolt, does not protrude on the bottom (upper and lower contact surfaces) of the upper and lower fixing plates 2, 3. Therefore, unlike the conventional elastic support, it is not necessary to form a separate groove for preventing the head of the fastening member 6 from protruding to the bottom. Therefore, in the present invention, the grooving operation required in the conventional elastic support is not required, so that the manufacturing becomes easier and the manufacturing cost can be reduced.

In particular, in the present invention in forming a hole in the coupling iron plate 13 of the support body 10 for coupling with the upper and lower fixing plates (2, 3), unlike the conventional elastic bearing, the coupling iron plate (13) Since the hole is formed to penetrate through, the processing of the hole is very easy. Therefore, a high degree of skill is not required in processing and manufacturing the device, thereby saving labor cost, manufacturing cost, and the like, and improving production productivity.

Figure 3 is a horizontal cross-sectional view corresponding to Figure 2c for another embodiment of the elastic support according to the present invention. 3 is an embodiment in which the shape of the flange portion 14 formed in the support body 10 is modified. As described above with reference to FIGS. 2A to 2C, the flange portion 14 may be formed over the entire outer circumferential surface of the support body 10, but if necessary, the flange portion 14 as shown in FIG. 3. ) May be formed only on a portion of the outer circumferential surface of the support body (10).

On the other hand, the structure of the present invention described as an example of the elastic support is also applied to the support is provided with a lead core 20 in the center as shown in Figure 4, to the various types of laminated rubber support for supporting other structures All apply.

 As described above, according to the present invention, there is no need for machining the recesses 123 and the grooves 126 on the upper and lower fixing plates 121 and 122, which are necessary in the conventional laminated rubber bearing, and thus, laminated rubber bearing. It is possible to reduce the production cost of.

In particular, in the conventional laminated rubber bearings, the thickness of the upper and lower fixing plates 121 and 122 is reduced by forming the recesses 123 and the grooves 126 so that the supporting body 110 has the upper and lower fixing plates 121 and 122. There is a problem that the possibility of isolation from the high), in the present invention, because the thickness of the upper and lower fixing plate is not thin, the above problems do not occur at all.

In addition, the conventional laminated rubber bearings required considerable skill and meticulous processing to form the bolt coupling holes 104 in the coupling iron plate 103 to a predetermined depth. There is no need for skillful and meticulous processing, and accordingly, manufacturing cost can be reduced and workability can be improved.

Although the embodiments of the present invention have been described above, the present invention is not limited to the described embodiments, and free modifications and improvements can be made within the spirit and claims of the present invention.

Claims (2)

As a laminated rubber bearing installed between the upper and lower structures, Reinforcing iron plate 11 made of a thin iron plate is laminated between the rubber layer 12, the support body 10, and the upper fixing plate (2) for fixing and installing the support body 10 between the upper structure and the lower structure And a lower fixing plate 3; The uppermost and lowermost of the reinforcing iron plate 11 provided in the base body 10 is composed of a combined iron plate 13 made of a wider iron plate than the middle iron plate, the top of the base body 10 and At the lowermost portion, the width of the support body 10 is wider than the middle portion, so that the flange portion 14 protruding to the outside is formed; The flange portion 14 is formed through the plurality of through coupling holes 15 for coupling with the upper and lower fixing plates (2, 3); The upper and lower fixing plates 2 and 3 coupled to the upper and lower portions of the supporting body 10 are formed with insertion holes 4 formed in the flange portion 14 of the supporting body 10, respectively. After the upper and lower fixing plates 2 and 3 are respectively installed on the upper and lower portions of the main body 10, a fastening member 6 such as a bolt and the like is formed in the flange portion 14 of the support body 10 through the through coupling hole ( 15 through the through, and then inserted into the insertion hole (4) of the upper and lower fixing plates (2, 3) and screwed together, the support body 10 and the upper and lower fixing plates (2, 3) are integrally coupled Laminated rubber support characterized in that it has a structure to be assembled. The method of claim 1, The flange portion 14 is laminated rubber bearing, characterized in that formed on a portion of the outer peripheral surface of the support body (10).

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