KR100941748B1 - Separation type oilless bridge bearing - Google Patents

Abstract

PURPOSE: A separable oil-less bridge bearing is provided to prevent damage to a bridge and reduce construction period and construction cost by easily replacing a spherical bearing. CONSTITUTION: A separable oil-less bridge bearing comprises an upper plate(2), a base plate(4), a rubber pad, and an anti-lift block. An upper plate comprises a movement limit bracket for restricting the horizontal movement of the upper plate. The base plate is installed under the upper plate to correspond to the upper plate. A rubber pad is installed on a mounted groove bottom formed on the base plate. A bearing(5c) is formed between the upper plate and the base plate. A sliding plate(5a) is installed above the bearing. The anti-lift block prevents the upper plate from being lifted.

Description

Separation type oilless bridge bearing

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a separate oilless bridge bearing, and more particularly, to a spherical bearing, which is one of various bridge devices used in bridges, in particular in railway bridges.

In general, spherical bearings, which are frequently used in railway bridges, were first developed by Oilless Co., Ltd. in Japan, and are widely known and used in Korea, and many similar types of spherical bearings have been introduced. In general, it absorbs the shock vibration generated from the upper part of the bridge, relieves it and transmits it to the bridge, and also accommodates the amount of telescopic movement that the top plate of the bridge expands and contracts with temperature.

On the other hand, many spherical bearings have been applied in Korea, and in particular, they have been applied to railway bridges for a long time. However, if you want to replace them in spherical bearings that need to be replaced due to aging or damage, Since spherical bearings can not be easily removed when they are installed on the bridge, they had no choice but to replace the concrete at the top of the bridge and the top of the bridge.

This method will not only make the bridge vulnerable because it will have a big impact on the bridge, but it will also break the concrete, remove the existing spherical bearings and replace them with new ones. Since it requires a lot of construction period, and the cost of replacement also has to be excessive, there are many problems.

In particular, in the case of railway bridges, when the spherical bearings are replaced, the bridges must be replaced by lifting the bridges through jack-ups at the bridges. There is also a limit on the amount of jack ups for bridges, and there are technical limitations in that spherical bearings installed in bridges cannot be disassembled and replaced without breaking concrete in the bridge and the top of the bridge.

Referring to Figures 1 to 4 will be described in detail with respect to the problem of the conventional spherical bearing as follows.

First, FIG. 1 is disclosed in Korean Utility Model Model No. 20-398507, and the spherical bearing disclosed in this document has a circular shear key on the upper surface of the upper plate in order to secure the leaflet holding force (see "C1" in FIG. 1). And a crisscross (+) type shear key (see " D1 " in FIG. 1) is disposed on the lower surface of the base plate.

In order to limit the behavior of the upper plate, the upper plate has a movement limiting bracket (see "A1" in FIG. 1), and the base plate has a stopper (113 in FIG. 1) corresponding to the movement limiting bracket ( 1), see "B1" in FIG. 1.

However, the conventional spherical bearing disclosed in FIG. 1 has a shear key embedded in the upper plate and the base plate, respectively, embedded in concrete, and a movement limiting bracket formed on the upper plate to limit the behavior of the upper structure. The spherical bearing is separated from the piers without breaking the corresponding portions of the piers and the top plate due to mutual interference of the stopper (see "B1" in FIG. 1) formed to correspond to the movement limiting bracket). And there was a disadvantage that can not be replaced.

As described above, in the case where the shear key is embedded in the concrete structure of the piers or the top plate to improve the leaflet power, the spherical bearing cannot be fundamentally separated without breaking the corresponding part in the replacement work at the installation site. There is this.

On the other hand, as a problem improvement due to the concrete purchase of the shear key described above, Korean Utility Model Model No. 20-0266327 discloses a split type spherical type bridge device, and Korea Patent Registration No. 10-0329812 A bearing is disclosed, and Korean Utility Model Model No. 20-0418600 discloses a separate oilless bridge bearing.

Figure 2 is a split type spherical type bridge device disclosed in Korean Utility Model No. 20-0266327, Figure 3 is a split oilless bearing disclosed in Korean Patent Registration No. 10-0329812, Figure 4 is a Korean Utility Model It is a separate oilless bridge bearing disclosed in Shinan 20-0418600.

2 to 4, the spherical bearings disclosed in these drawings form a structure in which shear keys of the upper plate and the base plate are not buried in concrete, as in the aforementioned spherical bearing (see FIG. 1). There seems to be no problem with the shear key.

However, they also have a transfer limiting bracket (see "A2" in FIG. 2 and "A3" in FIG. 3 and "A4" in FIG. 4) formed in the upper plate to limit the behavior of the superstructure and Due to the mutual interference of the side block (B2 in FIG. 2 and "B3" in FIG. 3, and "B4" in FIG. 4 in FIG. 4) formed to correspond to the movement limiting bracket, corresponding portions of the piers and the upper plate are There is a disadvantage that the spherical bearing cannot be disassembled and replaced without breaking.

In other words, the jack-up operation alone cannot remove the base plate by moving the base plate horizontally due to interference between the side block and the restraint bracket. Especially, in the case of railway bridges, the train must be operated even when the spherical bearing is replaced. Due to this, there is also a limit on the amount of jack-ups for the bridges, and there is a structural problem that cannot be easily disassembled due to interference between components.

In particular, as described above, since the operation of the train must be performed even during the operation of replacing the spherical bearing in the railway bridge, the amount of jack-up is limited. In fact, the jack-up allowance is only about 5 to 6 mm, whereas the shear key The height of is 30 ~ 40mm, so the jack-up allowance is the shear plate (120b in FIG. 2, 23 in FIG. 3, 410 in FIG. 4) and the sole plate (110 in FIG. 2, 241 in FIG. 3 and 700 in FIG. 4). It is impossible to separate from.

As a result, the spherical bearing, which is the bridge bearing disclosed in FIGS. 2 to 4, has changed the shear key ("C1" and "D1") portions formed in the upper plate and the base plate into a structure that is not embedded in concrete. However, the interference problem due to the shear key is still not solved, and the remaining interference portion of the upper plate, the restraining bracket (see 120 of FIG. 2, 20 of FIG. 3, and 42 of FIG. 4) and a corresponding stopper (FIG. 2) 163, 12 of FIG. 3, and 120 of FIG. 4) exist as it is, resulting in a problem with existing problems.

The present invention is to solve the above problems, to improve the spherical bearing installed in the bridge state without damaging the pier and the upper plate structure to solve the problem of replacing the spherical bearings In addition, the seismic oilless bridge that absorbs and absorbs the shock generated from the top of the bridge, which is a functional requirement of the bridge support, is delivered to the bridge and naturally accommodates the expansion and contraction behavior of the top of the bridge. The purpose is to provide support.

In order to achieve the above object, the present invention, the upper plate having a movement limiting bracket for limiting the horizontal movement of the upper plate on the left and right sides, the base plate which is installed corresponding to the upper plate under the upper plate, and the A bearing provided between the upper plate and the base plate, a stopper integrally provided on the base plate and positioned in a groove between the upper limiting bracket of the upper plate, and an end of which is located on an upper surface of the upper plate to limit the movement. A spherical bearing for use as a bridge device for a bridge including a lift prevention block that prevents lifting of the top plate while limiting horizontal movement of the top plate by interference with the bracket;

The stopper and the lift prevention block are integrally formed, and the side block, which is a structure in which the stopper and the lift prevention block are integrally formed, is installed to be detachable from the base plate.

On the other hand, according to another aspect of the present invention for achieving the above object, the upper plate having a movement limiting bracket for limiting the horizontal movement of the upper plate on the left and right sides, and is installed in the lower side of the upper plate and a spherical groove in the center A base plate, a bearing positioned in the spherical groove, a stopper provided integrally on the base plate and positioned in a groove between the restraining brackets of the upper plate, and an end thereof is located on an upper surface of the upper plate. In the spherical bearing used as the bridge device of the bridge including a lift preventing block that prevents the lifting of the top plate while limiting the horizontal movement of the top plate by interference with the movement restriction bracket; The stopper may be installed to be detachable from the base plate.

The effects of the present invention are as follows.

According to the present invention, the spherical bearing installed in the bridge can be removed without damaging the pier and the upper plate, thereby reducing the air and reducing the construction cost.

In addition, the present invention can solve the problem that the bridge is weak due to the impact of the bridge and the top plate, which is a problem that occurs when replacing the spherical bearing in the existing structure, it is possible to prevent damage to the bridge The effect can be achieved.

In particular, as the railway bridge is required to be installed a large number of spherical bearings in a certain section, the spherical bearings of the present invention can be easily replaced, which is more effective in shortening air, reducing construction costs, and preventing bridge damage.

Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 5 to 8.

Example 1

5 is an exploded perspective view of the spherical bearing of the present invention, Figure 6 is a cross-sectional view showing the exploded view of the spherical bearing of Figure 5, Figure 7 is a construction state diagram of the spherical bearing of the present invention, (a) Is the state diagram when constructing concrete, and (b) is the state diagram when constructing steel box.

Referring to these drawings, the spherical bearing of the present embodiment includes an upper plate 2 having a movement limiting bracket for restricting horizontal movement of an upper plate (not shown) on both left and right sides, and a lower side of the upper plate 2. A base plate (4) to be installed, a bearing (5c) installed between the upper plate (2) and the base plate (4), and the upper plate (2) integrally provided on the base plate (4). The stopper is located in the groove between the movement restriction bracket of the upper plate 2, the end thereof is located on the upper surface of the upper plate (2) to limit the horizontal movement of the upper plate by interference with the movement restriction bracket and to lift the upper plate It is configured to include an anti-lift block that is blocked, the stopper and the anti-lift block is formed integrally, the structure formed by the stopper and the anti-lift block integrally formed (hereinafter, side Referred to as rock (3) hereinafter) is provided to releasably on the side of the base plate (4).

In other words, while the parts consisting of the conventional stopper and the lift prevention block are divided into one part, the side block 3, which is an integral structure, is formed to be bolted to both sides of the base plate 4, respectively.

Thus, the side block 3 is detachable from the base plate 4 by releasing the fastening bolt 3a.

In addition, an existing shear key is not formed on the upper surface of the upper plate 2 and the lower surface of the base plate 4.

On the other hand, in the spherical bearing of the present embodiment, a mounting groove is formed on the base plate 4, a rubber pad 5e is installed at the bottom of the mounting groove, and a bearing 5c is placed on the rubber pad 5e. A piston 5d having a spherical groove which can be positioned is installed.

In addition, a seal ring 5b and a sliding plate 5a are installed at an upper portion of the bearing 5c positioned in the spherical groove of the piston 5d.

Meanwhile, in FIG. 5, reference numeral 1 denotes a sole plate used for coupling to the upper plate, and 2a is an upper anchor bolt, and the upper plate (tap) is formed on the bottom surface of the sole plate 1 for screwing. 2) can be fastened to the sole plate (1). At this time, the part where the sole plate 1 and the upper plate 2 abut is welded.

Since sufficient leaflet holding force can be secured by only the upper anchor bolt 2a and welding, the spherical bearing of the present invention can not form a shear key on the upper surface of the upper plate 2.

Reference numeral 4a is a base anchor bolt, 4b is an anchor coupler, 4c is an anchor socket, and these parts are used to fix the base plate 4 to the piers.

In the spherical bearing of the present invention, a shear key is not formed on the lower surface of the base plate 4, which is also sufficient leaflet using parts such as the base anchor bolt 4a, the anchor coupler 4b, and the anchor socket 4c. This is because it can secure intellect.

On the other hand, Figure 7 is a construction state diagram of the spherical bearing of the present invention, (a) is a state diagram at the time of concrete construction relative to the center line, (b) is a state diagram at the time of steel box construction.

The operation of the present invention configured as described above is as follows.

Also in the spherical bearing according to the present embodiment, interference portions "A" and "B" exist between the upper plate 2 and the base plate 4. In addition, the inherent function of the interference portion is to limit the movement of the upper plate to be made within a predetermined limit when the upper plate moves in accordance with the temperature change.

However, according to the present embodiment, spherical bearings while maintaining the inherent function of limiting the movement of the upper plate by the interference portions "A" and "B" of the upper plate 2 and the base plate 4 are retained. At the time of replacement, the interference of the interference parts ("A", "B") is easily solved through the disassembly of parts, so that the replacement operation can be easily performed.

Specifically, in this embodiment, the stopper, which is integrally formed on the existing base plate 4 and restricts the movement of the upper plate, and the lift preventing block, which limits the lifting phenomenon of the upper plate, are formed as one structure called the side block 3. On the other hand, it is configured to be bolted to the side of the base plate (4).

That is, in the present embodiment, the function of the stopper, which is integrally formed on the base plate 4, is integrated and given to the side block 3, and the side block 3 is provided with grooves pre-machined on the side of the base plate 4. In the fitted state between the 400 is a structure that is fastened with the bolt (3a).

Therefore, when the spherical bearing of the present embodiment disassembles and removes only the side block 3 first at the site of a railway bridge or the like on which the product is installed, the upper plate 2 in the longitudinal or transverse direction of the bridge after a slight jack-up is made. It can be removed by moving horizontally without interference from).

As described above, the spherical bearing of the present embodiment is realized by integrating the functions of the existing product, as well as disassembling only the side block 3 first at the site where the product is installed when the need for replacement occurs. Since it can be removed at the installation site, it is possible to solve various problems at the same time, such as reducing the cost and time required for replacement as well as minimizing damage to the bridge.

Example 2

8 is an assembled state diagram of a spherical bearing according to a second embodiment of the present invention, (a) is a side view showing the concrete construction with respect to the center line of the center, (b) is a sectional view showing the steel box construction. .

Referring to FIG. 8, the spherical bearing of the present embodiment includes an upper plate 2 having a movement limiting bracket for restricting horizontal movement of the upper plate on both left and right sides, and an upper plate (below the upper plate 2). 2) a base plate 4 corresponding to the upper plate, a bearing 5c provided between the upper plate 2 and the base plate 4, and an upper portion of the upper plate 2 integrally provided on the base plate 4; A stopper 300 located in the groove between the movement restriction brackets of the plate 2 and the stopper 300 are assembled to the stopper 300 and the end thereof is positioned on the upper surface of the upper plate 2 so that the movement restriction bracket 200 In addition to limit the horizontal movement of the top plate by the interference of the anti-lift block 310 is configured to prevent the lifting of the top plate, the stopper 300 is installed to be detachable from the base plate (4) .

That is, the stopper 310 and the lift prevention block 300 are manufactured as separate members, but the stopper 310 is fastened to the side of the base plate 4 with bolts 3a, and the stopper is lifted again as before. The prevention block 300 has a structure in which the bolt 3b is fastened.
At this time, the stopper 310 has a structure that is fastened with the bolt (3a) in a state sandwiched between the groove 400 (see Fig. 1) pre-processed on the side of the base plate (4).

Incidentally, other configurations than those mentioned above are the same as in the above-described first embodiment.

The operation of this embodiment configured as described above is as follows.

The basic operation of the spherical bearing of this embodiment is the same as that of the first embodiment described above. That is, the interference when the spherical bearing is replaced while maintaining the inherent function of limiting the movement of the upper plate by the interference portions "A" and "B" of the upper plate 2 and the base plate 4. The interference of the parts "A" and "B" is eliminated, and the separation and replacement work is easily performed.

However, in the spherical bearing of the present embodiment, the stopper and the anti-lift block are made of separate members, and the bolt 3a with the stopper 310 inserted into the groove 400 provided on the side of the base plate 4 is provided. ), And the stopper 310 has a structure in which the lift preventing block 300 is fastened to the bolt 3b, and thus there is a difference in the separation process.

In other words, the spherical bearing of the present embodiment, when replacing the product in the field, such as a railway bridge on which the product is installed, by unscrewing the bolt (3a) fastened to the stopper 310 to remove the anti-lift block together with the stopper, a little jack -Up alone can be removed by moving horizontally without the interference of the upper plate (2) in the longitudinal or transverse direction of the bridge.

On the other hand, the spherical bearing of the present embodiment is installed so that the anti-lift block 300 is disassembled again with respect to the stopper 310 that can be disassembled from the base plate 4, so as to disassemble the anti-lift block fastened to the stopper as needed. Of course, it can be disassembled first.

The rights of the present invention are not limited to the embodiments described above, but are defined by the claims, and those skilled in the art can make various modifications and adaptations within the scope of the claims. It is self-evident.

1 to 4 is an exploded perspective view of a spherical bearing according to the prior art

5 is an exploded perspective view of the spherical bearing according to the first embodiment of the present invention;

6 is an exploded cross-sectional view showing the spherical bearing of FIG.

7 is a construction state diagram of the spherical bearing of the present invention, (a) is a state diagram at the time of concrete construction based on the center line, (b) is a state diagram at the time of steel box construction

8 is a construction state diagram of the spherical bearing according to the second embodiment of the present invention, (a) is a state diagram at the time of concrete construction, (b) is a state diagram at the time of construction of the steel box on the basis of the center line

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

1: Sol Plate 2: Upper Plate

3: side block 4: base plate

5a: sliding plate 5b: seal ring

5c: bearing 5d: piston

5e: rubber pad

Claims (2)

An upper plate (2) having a movement limiting bracket for restricting horizontal movement of the upper plate on both left and right sides, a base plate (4) disposed below the upper plate (2) corresponding to the upper plate (2), A rubber pad 5e installed on a bottom of a seating groove provided on the base plate 4, a bearing 5c provided between the upper plate 2 and the base plate 4, and the bearing 5c. A stopper disposed in the groove between the sliding plate 5a installed at an upper portion, the base plate 4 and integrally disposed on the base plate 4, and the upper limiting portion of the upper plate 2; Located on the upper surface of the) includes an anti-lift block to limit the horizontal movement of the top plate by interference with the movement restriction bracket and to prevent the lifting of the top plate, The stopper and the lift prevention block are integrally formed, and the side block 3, which is a structure in which the stopper and the lift prevention block are integrally installed, is installed to be detachable from the base plate 4. The side block (3) is removable oilless bridge receiving, characterized in that fastened in the state inserted into the groove 400 formed on the side of the base plate (4). An upper plate (2) having a movement limiting bracket for restricting horizontal movement of the upper plate on both left and right sides, a base plate (4) disposed below the upper plate (2) corresponding to the upper plate (2), A rubber pad 5e installed at a bottom of a seating groove provided on the base plate 4, a bearing 5c provided between the upper plate 2 and the base plate 4, and the bearing 5c. A stopper 310 is provided integrally on the base plate 4, the stopper 310 is provided in the groove between the restraining bracket of the upper plate 2, and the end thereof is upper Located on the upper surface of the plate (2) includes a lift prevention block 300 to limit the horizontal movement of the upper plate by the interference with the movement restriction bracket and to prevent the lifting of the upper plate, The stopper 310 is installed to be detachable from the base plate 4, the stopper 310 is assembled with a lift preventing block 300 detachably, The stopper 310 is separated oilless bridge receiving, characterized in that fastened in the state inserted into the groove 400 formed on the side of the base plate (4).

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