JP2000310277A - Sliding support device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To hold original frictional characteristic of a sliding support noticeably for a long period of time and to easily carry out spreading work of a cover. SOLUTION: A smooth plate 2 made of stainless steel, etc., is arranged on a foundation batholith 1, and a layered body 4, having a sliding plate 5 is arranged on it. A rod 21 of a cover support body 20 makes contact with a flange 6. A cover 9 is made by connecting two pieces of cover pieces 10 by an aluminium tape. This cover 9 is placed on a slide base 22 of the cover support body 20. The rod 21 erected from the slide base 22 is inserted into an insertion part 13 of the cover 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a sliding bearing device, and more particularly to a sliding bearing device having a cover.

[0002]

2. Description of the Related Art In order to make buildings, mechanical equipment, and the like have a seismic isolation structure, a sliding bearing device in which a sliding bearing member is slidably disposed on a smooth plate is becoming widespread. As the sliding bearing member, a member in which a low friction material layer such as polytetrafluoroethylene (PTFE) is provided on the lower surface of a laminate of a hard plate such as a metal plate and a soft plate such as rubber is often used. As the smooth plate, a stainless plate is usually used.

[0003] In such a sliding bearing device, during an earthquake, a laminated body equipped with a PTFE material slides on a stainless steel plate as a mating material, and seismic force is absorbed.

If the stainless steel plate is left exposed, dust, moisture and the like accumulate on the stainless steel plate over a long period of use, and the original frictional characteristics of the elastic sliding bearing may fluctuate. Therefore, a cover for covering the elastic sliding bearing is required in terms of dustproof / waterproofness and appearance. Conventionally, as a cover, a panel such as an acrylic plate is assembled with an adhesive, a screw, or the like.

Japanese Patent Application Laid-Open No. 9-195577 discloses a structure in which a cover made of a film-like elastic body is attached to a foundation beam supported by a slide bearing member, and the cover entirely covers the slide bearing device. .

[0006]

As with other seismic isolation laminated rubber bearings, sliding bearings require regular inspections and extraordinary inspections when subjected to vibrations exceeding a predetermined value.

However, when the above-mentioned panel is used as a cover, care must be taken not to cause the cover material itself to be heavy and to prevent the cover material from being damaged or cracked. A great deal of labor and time is required for attaching and detaching the elastic sliding bearing, and there are cases where it is not possible to carry out regular or temporary inspection of the elastic sliding bearing easily and quickly.

When the entire sliding bearing device is covered by a cover made of a film-like elastic body as in the above-mentioned Japanese Patent Application Laid-Open No. 9-195577, dew condensation or the like is easily generated inside the cover, and the cover cannot be evaporated. When the upper structure and the lower structure of the building are displaced due to accumulation or an earthquake or the like, there is a problem that the cover material is sandwiched between the laminated rubber of the sliding bearing and the stainless steel plate. In addition, since the cover made of such a film-like elastic body has poor flame resistance, when a construction company performs welding work near the sliding bearing installation portion, welding sparks may ignite the cover material.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a sliding bearing device in which a cover member can be easily attached and detached and inspection work of the sliding bearing device can be performed efficiently.

Another object of the present invention is to provide a sliding bearing device which does not cause dew condensation inside the cover (even if dew condensation occurs, there is room for evaporation), and is extremely excellent in long-term durability. Aim.

[0011]

SUMMARY OF THE INVENTION A sliding bearing device according to the present invention comprises a smooth plate, a sliding bearing member slidably disposed on the smooth plate, and a cover for covering the smooth plate. , A cover support is slidably disposed on the smooth plate, and the cover is supported by the cover support.

In such a sliding bearing device, the cover can be installed by arranging the cover on the smooth plate so that the cover is supported by the cover support, and the installation work of the cover is extremely simple. It is. Also, this cover is easy to remove. By making this cover a heat insulating board whose upper surface is covered with a metal film (for example, an aluminum film), the weight of the cover can be reduced, and the durability, waterproofness, and flame resistance of the cover can be improved. . If this heat insulating board is used with an air layer secured, dew condensation inside the cover can be sufficiently prevented. Even if condensation occurs, there is room for evaporation.

The cover support includes a slide base that slides on a smooth plate, and a rod that rises from the slide base. The rod penetrates the cover, and the slide base supports the cover. Is preferred.

In this case, it is preferable that the slide bearing member has a flange that projects laterally, and that the rod is in contact with or close to the outer periphery of the flange.

In the present invention, the cover may be constituted by connecting a plurality of cover pieces. In this case, it is preferable to connect the cover pieces with a metal adhesive tape such as an aluminum adhesive tape or a planar fastener (trade name magic tape).

[0016]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing a sliding bearing device according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view showing a connecting structure of a cover to a sliding bearing member. FIG. 3 is III of FIG.
FIG. 4 is a cross-sectional view taken along the line III, FIG.
FIG. 4 is a perspective view of a cover support.

In this embodiment, a stainless steel smooth plate 2 is fixedly mounted on a concrete base floor 1. A slide bearing member 3 is slidably disposed on the smooth plate 2. The sliding bearing member 3 is composed of a seismic isolation laminate 4 in which a metal plate 4a such as an iron plate and a soft plate 4b such as rubber are laminated, and a fluororesin (for example, polystyrene) provided on the bottom surface of the laminate 4 by bonding or the like. A sliding plate 5 made of a low friction material such as tetrafluoroethylene) and a metal flange 6 joined to the upper surface of the laminate 4 by vulcanization or the like are provided. The flange 6 is used for a supported member 30 such as a building.
Has a bolt insertion hole 7 for fixing the bolt.

As shown in FIG. 2, in this embodiment, the cover 9 is formed by connecting two cover pieces 10 together.
The cover piece 10 has a semicircular concave part 11 arranged close to the outer peripheral surface of the columnar laminated body 4, and an upright wall 12 rising from an edge of the concave part 11. Along the upright wall 12, an insertion portion (formed of a hole or a notch) 13 for the cover support 20 is provided.

The cover piece 10 is composed of a heat insulating board made of a flame-retardant isocyanurate foam, and an aluminum foil attached to the upper surface of the heat insulating board. In addition, it is preferable that an aluminum foil is also wrapped around the end surface of the heat insulating board to improve the beauty. It is preferable to dispose a lightweight frame 15 on the lower surface side of the cover piece 10.

The cover support 20 is made of a synthetic resin such as polypropylene, and has a slide base 22 that slides on the flat plate 2 and a rod 21 that rises from the slide base 22. The rod 21 is inserted through the insertion portion 13, and the upper end thereof is in contact with or close to the side peripheral surface of the flange 6. The cover 9 is loaded on the slide base 22. Sliding bearing member 3 due to earthquake
Slides on the smooth plate 2, the flange 6 pushes the rod 21, and the cover 9 slides and moves together with the support member 3.

In the sliding bearing device configured as described above, the peripheral portion of the sliding bearing member 3 on the upper surface of the smooth plate 2 is covered with the cover 9, and moisture and dust are removed around the sliding bearing member 3. No smoothness and support function are maintained over a long period of time without being placed on the smooth plate 2. In particular, since the lower surface side of the cover 9 is formed of a heat insulating board having an air layer, even if dew condensation occurs inside the cover 9, there is room for the condensed water to evaporate in the air layer, and There is no accumulation on the plate 2. As a result, the inherent sliding properties of the elastic sliding bearing are maintained for a very long time.

In this embodiment, the cover 9 is formed by connecting a plurality of cover pieces 10 with a tape, so that the cover pieces can be easily carried to the site, and the sliding support can be provided. The operation of disposing the cover 9 so as to surround the member 3 is extremely easy. When one cover piece 10 is damaged, it is possible to replace only the cover piece.

In the above embodiment, two cover pieces 10 are used, but the number of cover pieces may be another number such as three. Alternatively, a cover consisting of only one sheet may be used.

[0025]

As described above, according to the present invention, it is possible to easily perform the work of installing and removing the cover in the case where the slidability between the smooth plate and the slide bearing member is maintained for a long time by the cover. become. Further, according to the present invention, dew condensation inside the cover can be prevented, and the excellent sliding characteristics inherent to the sliding bearing can be maintained for an extremely long time.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a slide bearing device according to an embodiment.

FIG. 2 is an exploded perspective view showing the slide bearing device according to the embodiment.

FIG. 3 is a sectional view taken along the line III-III in FIG. 1;

FIG. 4 is an enlarged view of a part of FIG. 3;

FIG. 5 is a perspective view of a cover support.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 base bottom 2 smooth plate 3 sliding bearing member 4 laminated body 5 sliding plate 6 flange 9 cover 10 cover piece 20 cover support 21 rod 22 slide base

Claims (7)

[Claims] 1. A sliding bearing device comprising a smooth plate, a sliding bearing member slidably disposed on the smooth plate, and a cover for covering the smooth plate, wherein a cover support slides on the smooth plate. A sliding bearing device movably disposed, the cover being supported by the cover support. 2. The sliding bearing device according to claim 1, wherein the cover is formed of a heat insulating board whose upper surface is covered with a metal film. 3. The sliding bearing device according to claim 2, wherein the heat insulating board has an air layer between the heat insulating board and a smooth plate. 4. The cover support according to claim 1, wherein the cover support includes a slide base that slides on the smooth plate, and a rod that rises from the slide base. A slide bearing device penetrating a cover, wherein the slide base supports the cover. 5. The sliding bearing device according to claim 4, wherein the sliding bearing member has a flange extending laterally, and the rod is in contact with or close to the outer periphery of the flange. 6. The slide bearing device according to claim 1, wherein the cover is formed by connecting a plurality of cover pieces. 7. The sliding bearing device according to claim 6, wherein the cover pieces are connected to each other by a metal adhesive tape or a flat fastener.