JP3728689B2 - Non-lubricated seismic isolation device - Google Patents

Description

[0001]
[Technical field to which the invention belongs]
The present invention is used by being placed on a base of a building or an installation part of a machine / equipment device, and a cross-crossed shaft is disposed on the part at an interval in the vertical direction, and a bearing is fitted on the outer surface of the crossing part. And by sliding the bearings along the shaft or sliding the shafts along the bearings, the vibration caused by the earthquake is absorbed like a damper, and the deformation or damage of the building or machinery / equipment due to the earthquake is prevented. It relates to seismic isolation devices to prevent. In particular, by adopting a sliding mechanism by surface contact using a friction material such as wood ceramics that has excellent friction characteristics and friction vibration suppression function in the sliding mechanism part, it has been difficult to achieve light weight buildings and lightweight The present invention relates to a non-lubricated seismic isolation device that is capable of accurately and economically isolating machinery and equipment.
[0002]
[Prior art]
There are two types of shaking of an earthquake: pitching and rolling, but in general, structural considerations are made so that buildings can withstand pitching. However, it is said that the damage caused by earthquakes is often caused by rolling, and apart from the structural considerations of the building itself, it is necessary to install a seismic isolation device that absorbs the shaking of the earthquake and reduces the damage. There is.
As a conventional seismic isolation device, a rolling sliding mechanism using a steel ball or an alloy of various metals is generally used as a sliding mechanism between the bearing and the shaft.
However, in this case, there are the following various problems due to the relationship between the material of the friction body and the structure of the sliding mechanism.
In other words, the friction coefficient is relatively large and the fluctuation is unstable and unstable and stable friction characteristics cannot be obtained, and the friction coefficient gradually decreases as the friction speed (sliding speed) increases. Therefore, stable operation accuracy cannot be obtained and a large amount of operating energy is required for sliding.
And because the frictional fluctuation is large and unstable, the swing speed (operation speed) of the sliding mechanism during and after the earthquake roll may be unstable and suddenly start shaking. Because it is a structure that receives stress by point contact with a rolling sliding mechanism, it has the property of being weak against vertical load, especially upward pulling load, and the effect on the building is accordingly increased, and the damage rate is also increased.
For this reason, conventional seismic isolation devices can only perform their functions if they are not heavy buildings such as buildings and condominiums, which increases the cost and light weight housing (detached housing). And it was difficult to achieve seismic isolation of lightweight machinery and equipment.
Also. Since the wear resistance and the corrosion resistance are not excellent, coupled with the fact that the stable friction characteristic cannot be obtained, there is a problem in durability due to a mechanism malfunction due to secular change.
Furthermore, due to the fact that it requires lubricating oil for operation, it is difficult to use in places where its function deteriorates or is impaired, and there are restrictions on the place of use and conditions of use, and a great deal of labor and cost are required for maintenance. .
[0003]
[Problems to be solved by the invention]
Then, this invention makes it a subject to eliminate the various difficulty which the said conventional apparatus has by devising the raw material and structure of the sliding mechanism of a seismic isolation apparatus.
In particular, the sliding mechanism of the device has excellent friction characteristics and friction vibration suppression function, and is based on surface contact using a friction material such as wood ceramics that can provide stable operation accuracy and high durability even without lubrication. It is an object of the present invention to provide a non-lubricated seismic isolation device that can accurately and economically achieve seismic isolation of lightweight buildings such as ordinary houses and lightweight machinery and equipment, which has been difficult in the past.
[0004]
[Means for Solving the Problems]
In order to achieve the above object, the present invention takes the following measures.
[0005]
First of all, it is basically fixed to the base of the building or the installation part of the machine / equipment with a space in the vertical direction and fixed in a cross shape and V-shaped notch sliding surfaces 2, 2, 4, 4 on both sides. The upper guide rail 1 and the lower guide rail 3 are formed symmetrically, and the U-shaped upper fitting groove 6 and the inverted U-shaped lower fitting groove 7 are internally molded by cross-crossing them at an interval in the vertical direction. And a guide holder that is slidably inserted and fitted to the outer surface of the intersection of the upper guide rail 1 and the lower guide rail 3 through the U-shaped upper fitting groove 6 and the inverted U-shaped lower fitting groove 7. 5, and the U-shaped upper fitting groove 6 and the inverted U-shaped lower fitting groove 7 are slidably engaged with the upper and lower guide rails 1, 3 and the guide holder 5 by surface contact. From wood ceramics made of wood based porous carbon material Characterized in that allowed and a slider by friction body that.
[0006]
The U-shaped upper fitting groove 6 of the guide holder 5 is used as a slider made of a friction material made of wood ceramics that slidably engages the upper and lower guide rails 1 and 3 and the guide holder 5 by surface contact. The lower surface slider 9 is fitted on the lower surface of the lower U-shaped lower fitting groove 7 and is slidably contacted with the lower surface of the upper guide rail 1 and the upper surface of the lower guide rail 3, respectively. The upper guide rail is disposed on both side surfaces of the upper slider 10 and the U-shaped upper fitting groove 6 and the inverted U-shaped lower fitting groove 7 of the guide holder 5. 1. A side slider that slidably contacts and engages a downward inclined surface on the V-shaped notch sliding surfaces 2 and 2 on both sides and an upper inclined surface on the V-shaped notch sliding surfaces 4 and 4 on both sides of the lower guide rail 3. 11, 3 and the side sliders 11 and 13 that are fitted and disposed on the sliding members 12 and 14 respectively, on both side surfaces of the U-shaped upper fitting groove 6 and the inverted U-shaped lower fitting groove 7. The sliding members 12 and 14 fitted with the side sliders 11 and 13 are rocked through the pressure adjusting screw 16 or the ball plunger when loosened through the mounting screw 15 and loosely attached via the mounting screw 15. The slider is supported so as to be movable, and the contact pressure with respect to the V-shaped notch sliding surfaces 2 and 4 of the upper and lower guide rails 1 and 3 of the sliders 11 and 13 can be freely adjusted.
[0007]
Further, as the upper and lower guide rails 1 and 3, the friction characteristics possessed by the sliders 9, 10, 11 and 13 by the friction body made of wood ceramics are more effectively exhibited, and corrosion from the installation environment of the apparatus is achieved. In order to increase the corrosion resistance against SUS304, stainless steel special steel such as SUS304 is used.
[0008]
Similarly, sliders 9, 10, 11 and 13 are provided in the upper and lower U-shaped and inverted U-shaped fitting grooves 6 and 7, which are slidably contacted with the guide rails 1 and 3, respectively. As the guide holder 5, stainless steel special steel such as SUS304 is used in order to increase the corrosion resistance against corrosion from the installation environment of the apparatus and to prevent the deviation due to aging.
[0009]
Further, as the sliders 9, 10, 11, and 13 by friction bodies for slidable contact engagement between the upper and lower guide rails 1 and 3 and the guide holder 5, the porous carbon material of plants other than woody materials is used. In some cases, a slider made of a friction body made of other plant ceramics obtained from the same material as that of wood ceramics is used.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
An example of an embodiment of the present invention will be described with reference to the attached drawings (FIGS. 1 to 11).
[0011]
FIG. 1 is a plan view of a seismic isolation device according to an embodiment of the present invention, FIG. 2 is a front view with a part thereof in cross section, and FIG. 3 is a side view with a part in cross section. 1 is an upper guide rail in which V-shaped notch sliding surfaces 2 and 2 are formed symmetrically on both sides, and 3 is a lower guide rail arranged upside down. Similarly, V-shaped notch sliding surfaces on both sides 4 and 4 are formed symmetrically. 5 is slidably fitted to the intersections of the upper and lower guide rails 1 and 3 which are arranged in a cross shape at intervals in the vertical direction via fitting grooves 6 and 7 described later. Guide holder.
[0012]
A U-shaped upper fitting groove 6 and an inverted U-shaped lower fitting groove 7 are integrally formed in the guide holder 5 in a state of being cross-crossed at intervals in the vertical direction (one rotated 90 degrees). Has been. The upper guide rail 1 is inserted and fitted into the upper fitting groove 6 of the guide holder 5, and the lower guide rail 3 is inserted and fitted into the lower fitting groove 7.
The upper guide rail 1 is fitted to the guide holder 5 and then fixed to the steel beam U on the base of the building (see FIGS. 2, 4 and 9), and the lower guide rail 3 is fitted to the guide holder 5. After that, it is fixed to the foundation concrete C of the building base through the mounting base 8 (see FIGS. 2 to 9).
[0013]
A pair of lower surface sliders 9 and 9 that are slidably engaged with the lower surface of the upper guide rail 1 by surface contact are embedded and fixed to the lower surface of the U-shaped upper fitting groove 6 of the guide holder 5. A pair of upper surface sliders 10, 10 which are slidably engaged with the upper surface of the lower guide rail 3 by surface contact are also embedded and fixed on the upper surface of the inverted U-shaped lower fitting groove 7. Both the lower surface slider 9 and the upper surface slider 10 protrude into the upper fitting groove 6 and the lower fitting groove 7 by a slight distance α (see FIGS. 2 and 3).
[0014]
On both side surfaces of the U-shaped upper fitting groove 6 of the guide holder 5, sliding members 12, 12 having a substantially inverted triangular cross section with side sliders 11, 11 embedded and fixed are tightened / relaxed via mounting screws 15, 15. It is attached freely (see FIG. 4). The side slider 11 protrudes to the outside by a slight distance from the sliding member 12 in the same manner as the bottom and top sliders 9 and 10. Further, the side sliders 11 and 11 support the sliding members 12 and 12 so as to be swingable via the pressure adjusting screws (or ball plungers) 16 and 16 when the mounting screws 15 and 15 are loosened. The contact pressure with respect to the V-shaped notch sliding surfaces 2 and 2 on both side surfaces of the upper guide rail 1 is appropriately adjusted so as to be slidably engaged by surface contact (see FIG. 2).
Similarly, sliding members 14 and 14 having a substantially triangular cross section in which side sliders 13 and 13 are embedded and fixed are also provided on both side surfaces of the inverted U-shaped lower fitting groove 7 of the guide holder 5 via mounting screws 15 and 15. It is attached so that it can be tightened and loosened (not shown). The side sliders 13 and 13 protrude outward by a slight distance from the sliding members 14 and 14. Further, the side sliders 13 and 13 support the sliding members 14 and 14 so as to be swingable via the pressure adjusting screws (or ball plungers) 16 and 16 when the mounting screws 15 and 15 are loosened. The contact pressure with respect to the V-shaped notch sliding surfaces 4 and 4 on both side surfaces of the lower guide rail 3 is appropriately adjusted so as to be slidably engaged by surface contact (see FIGS. 3 and 5).
[0015]
4 and 5 are explanatory views showing the mutual relationship (assembled set state) between the upper and lower guide rails 1 and 3, the guide holder 5, and the lower, upper, and side sliders 9, 10, 11, and 13. is there. First, as shown in FIG. 4, the mounting screws 15 are tightened so that the sliding members 12, 12 are brought into close contact with both side surfaces of the U-shaped upper fitting groove 6. At this time, a gap A is set between the side sliders 11 and 11 and the V-shaped notch sliding surfaces 2 and 2 of the upper guide rail 1 (also in the inverted U-shaped lower fitting groove 7). Do the same). Accordingly, the insertion and fitting of the upper guide rail 1 and the lower guide rail 3 into the upper fitting groove 6 and the lower fitting groove 7 of the guide holder 5 can be performed smoothly and easily.
Next, the mounting screws 15 and 15 are loosened, and the sliding members 14 and 14 are connected to the V-shaped notch sliding surface 4 of the lower guide rail 3 via the pressure adjusting screws 16 and 16 set on the guide holder 5 as shown in FIG. , 4 are pushed into contact with each other to an appropriate degree, and the adjustment amount of the adjusting screws 16 and 16 is adjusted to adjust the amount of pushing operation of the side slider 13 and the V-shaped notch sliding surfaces 4 and 4 of the lower guide rail 3 (in this case, the upper inclined surface) ) And adjust the contact pressure appropriately. Then, since a gap D is secured between the both side surfaces of the lower fitting groove 7 and the sliding members 14, 14, the sliding members 14, 14 to which the side slider 13 is attached are connected to the press adjusting screws 16, 16. It is possible to freely swing (float) by an angle B around the tip (the above operation is the same for the sliding members 12 and 12 in the upper fitting groove 6). Therefore, even when an excessive load is applied from the upper and lower guide rails 1 and 3, the upper and lower guide rails 1 and 3 and the side surfaces are moved by the swinging action of the sliding members 12 and 14 having the side sliders 11 and 13. The sliders 11, 13 and therefore the guide holder 5 can always slide smoothly and lightly by surface contact.
[0016]
FIG. 9 shows the layout of the seismic isolation device S composed of the upper and lower guide rails 1 and 3, the guide holder 5, the upper and lower surfaces, the side sliders 9, 10, 11, and 13 in the building base. As is clear from the figure, the seismic isolation device S is considered between the steel beam U of the building and the foundation concrete C embedded in the ground, taking into account the size of the building, the relationship of the ground, etc. Arrange the appropriate number and position. Y is a floor board and T is a wall surface.
The upper guide rail 1 is fixed to the steel beam U, the lower guide rail 3 is fixed to the mounting base 8 with bolts 17, and the mounting base 8 is fixed to the foundation concrete C with anchor bolts 18.
[0017]
The lower surface slider 9, the upper surface slider 10, and the side surface sliders 11 and 13 use friction bodies made of wood ceramics made of a wood-based porous carbon material having a self-lubricating action. The friction body made of this wood ceramic has excellent friction characteristics such as excellent wear resistance, vibration suppressing function and durability, light weight, toughness, extremely low frictional resistance and stable fluctuation of friction. Actually, in particular, hard glassy carbon impregnated with phenol resin in woody porous carbon material such as wood is contained at about 30%, and this is baked in a vacuum furnace at a temperature of about 800 ° C or higher. Is used.
[0018]
The upper and lower guide rails 1 and 3 and the guide holder 5 exhibit the frictional properties of the slider made of a friction material made of wood ceramics more effectively, and have corrosion resistance against corrosion from the installation environment of the apparatus. In order to increase, stainless steel special steel such as SUS304 is used.
[0019]
The sliders 9, 10, 11 and 13 are not only those made of a friction material made of wood ceramics, but also are made of a porous carbon material of a plant other than wood, such as bamboo, rice husk, rice bran, etc. Other plant ceramics formed by carbonization firing may be used.
[0020]
6 to 8 are operation explanatory views of the ground-isolated device according to the embodiment of the present invention due to an earthquake transverse wave.
In FIG. 6, when E and F sway due to a seismic transverse wave in the Y-axis direction along the upper guide rail 1, the lower guide rail 3 fixed to the foundation concrete C moves by a distance of E and F 3 a and 3 b. Accordingly, the guide holder 5 slides along the upper guide rail 1 to the movement position of the lower guide rail 3.
When G and H swings in the X-axis direction along the lower guide rail 3, the lower guide rail 3 moves along the guide holder 5 by a distance of G and H. That is, the lower guide rail 3 and the guide holder 5 or only the lower guide rail 3 are moved by the amount that the ground is shaken due to the earthquake, and the movement is repeated as many times as the number of shaking.
At that time, although the upper guide rail 1 fixed to the building feels a slight shaking, it hardly moves and the building hardly feels shaking.
[0021]
In FIG. 7, in the state shown in FIG. 6, when the point of the ground J is swung to the point of the upper left K due to the earthquake, the lower guide rail 3 moves to the position 3 a, that is, the lower guide rail 3 is Through the sliding of the guide holder 5 with respect to the upper guide rail 1, a distance of L in the Y-axis direction and a distance of M in the X-axis direction are moved. The same applies to the case where the point of the ground J is swung to the point of the diagonally lower left N, and the lower guide rail 3 moves to the position 3b. Also in this case, only the lower guide rail 3 and the guide holder 5 or the lower guide rail 3 move with the shaking of the earthquake, and the upper guide rail 1 does not move and the building hardly feels shaking.
[0022]
In FIG. 8, in the state shown in FIG. 6, when the point of the ground P is swung to the point of the diagonally upper right Q and the diagonally lower right R due to the earthquake, the lower guide rail 3 moves to the positions 3a and 3b. In this case as well, as described above, only the lower guide rail 3 and the guide holder 5 or the lower guide rail 3 move along with the shaking of the earthquake, the upper guide rail 1 does not move, and the building hardly feels shaking. .
Therefore, as can be seen from the description of the operation in FIGS. 6 to 8, even if a transverse wave of an earthquake is received from all directions of 360 degrees on the same plane, it is sufficiently absorbed and does not affect the building.
[0023]
FIG. 10 and FIG. 11 are explanations of comparative experiments of friction characteristics between the present invention device using a sliding bearing using a slider made of a wood ceramic friction body in the slide mechanism of the seismic isolation device and a conventional device using a rolling bearing. FIG.
As can be seen from the figure, the conventional equipment that requires lubricating oil has a relatively high coefficient of friction throughout start-up and operation, and there is a large amplitude and small frictional fluctuation, which is not stable. In the device of the present invention that is not required, the friction is low and the friction fluctuation is small and stable. This is because wood ceramics itself has a self-lubricating action and a friction characteristic with a very small friction coefficient. In addition, as is apparent from FIG. 11, the device according to the present invention has a characteristic that the coefficient of friction increases slightly as the friction speed (sliding speed) increases. Therefore, unlike the conventional apparatus, the sliding speed increases. It also has an excellent ability to suppress frictional vibration.
Furthermore, it is excellent in wear resistance and durability due to the wood ceramic material.
Due to the low friction and stable characteristics with little friction fluctuation and excellent vibration suppression function, smooth and stable light and smooth sliding can be performed repeatedly with small operating energy. By preventing the occurrence of resonance phenomenon with shaking, the shaking of the building can be suppressed as much as possible, and the seismic isolation of a lightweight house such as a detached house can be accurately achieved.
[0024]
In the above description, the application of the device of the present invention in the case of seismic isolation of a building has been described. However, the present invention is not limited to this and can also be applied to a lightweight machine tool device. It is arranged and used.
[0025]
【The invention's effect】
Since the present invention has the above-described configuration, it solves the above-mentioned problems of the prior art and has the following specific effects.
[0026]
In the inventions according to claims 1 to 4, on the outer surface of the intersection of the upper and lower guide rails fixedly arranged in a cross shape with a space in the vertical direction at the base of the building or the installation part of the machine / equipment device, A U-shaped upper fitting groove and an inverted U-shaped lower fitting groove are cruciformly crossed at an interval in the vertical direction, and a guide holder is integrally slidably fitted through the fitting groove. And the lower guide rail and guide holder are slidably engaged by surface contact through a slider made of a friction material made of wood ceramics, so the slider has low friction, stable with little friction fluctuation, and vibration suppression function By fully utilizing the frictional properties of being excellent in vibration, it is possible to accurately absorb the shaking caused by the transverse waves of the earthquake with the slide mechanism and to ensure seismic isolation of buildings and machinery / equipment. Kill.
And even with small operating energy, light and stable sliding can be maintained for a long time without lubrication, and it is stable with little friction fluctuation. The swinging speed (operating speed) of the sliding mechanism is stable and stable, and since it receives stress by surface contact with low friction, it can sufficiently withstand vertical load, especially upward pulling load. it can. Therefore, particularly, it is possible to economically achieve seismic isolation of lightweight houses such as single-family houses and lightweight machinery / equipment, which has been considered difficult in the past, and the overall structure is simple.
In addition, because it is resistant to pulling out in the vertical direction, it is also suitable for seismic isolation of tower-like buildings that easily fall over or buildings where wind blows up.
[0027]
At the same time, the special engagement arrangement of the slider with respect to the guide rail enables smooth and stable sliding operation even if excessive external force is applied to the device, making it even more suitable for seismic isolation. It is.
That is, the sliding members 12 and 14 fitted with the side sliders 11 and 13 are attached to both side surfaces of the U-shaped upper fitting groove 6 and the inverted U-shaped lower fitting groove 7 of the guide holder 5 via the mounting screws 15. It is attached so that it can be tightened / relaxed freely, and when the upper and lower fitting grooves 6 and 7 are loosened on both side surfaces via the attachment screw 15, the adjustment amount of the pressing adjustment screw 16 (or ball plunger) is adjusted. The sliding members 12 and 14 are in a state in which a gap is secured between both side surfaces of the upper and lower fitting grooves, and the sliding members 12 and 14 are supported so as to be able to swing at an appropriate angle around the tip of the pressing adjustment screw 16. Due to the swinging action of the sliding members 12 and 14, the contact pressure with respect to the V-shaped notch sliding surfaces 2 and 4 of the upper and lower guide rails 1 and 3 of the side sliders 11 and 13 is appropriately adjusted. It is possible to perform the sliding operation by always reasonably smooth and stable and buoyant surface contact with the upper and lower guide rails 1, 3 and the side slider 11, 13 thus guide holder 5 I. Further, when the sliding members 12 and 14 are tightened and adhered to both side surfaces of the upper and lower fitting grooves 6 and 7 via the mounting screws 15, the side sliders 11 and 13 and the upper and lower guide rails 1 and 1 are attached. Since a gap is ensured between the V-shaped notch sliding surfaces 2 and 4 of FIG. 3, the upper and lower guide rails 1 and 3 are inserted and fitted into the upper and lower fitting grooves 6 and 7 of the guide holder 5. The assembly of the apparatus can be performed smoothly and easily.
[0028]
In the inventions according to claims 2 and 3, the friction characteristics possessed by the slider can be exhibited more effectively and the corrosion resistance is large, so that it is suitable for use regardless of the installation environment.
[Brief description of the drawings]
FIG. 1 is a plan view of a seismic isolation device according to an embodiment of the present invention.
FIG. 2 is a front view, partly in section, of the same as above.
FIG. 3 is a side view with a part in the cross section.
FIG. 4 is an explanatory diagram of mounting a slider on an upper guide rail.
FIG. 5 is an explanatory diagram of mounting a slider on a lower guide rail.
FIG. 6 is a diagram for explaining the operation of the apparatus with respect to the shaking of a transverse wave of an earthquake.
FIG. 7 is an operation explanatory diagram of the apparatus.
FIG. 8 is an operation explanatory diagram of the apparatus.
FIG. 9 is a layout diagram of a device in a detached house.
FIG. 10 is a friction characteristic diagram of the slide mechanism of the present invention and the conventional device.
FIG. 11 is a friction characteristic diagram of the above.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Upper guide rail 2 V-shaped notch sliding surface 3 Lower guide rail 4 V-shaped notched sliding surface 5 Guide holder 6 U-shaped upper fitting groove 7 Reverse U-shaped lower fitting groove 8 Mounting base 9 Lower surface slider 10 Upper surface slider 11 Side Slider 12 Slide Member 13 Side Slider 14 Slide Member 15 Mounting Screw 16 Pressing Adjustment Screw 17 Bolt 18 Anchor Bolt U Steel Beam C Foundation Concrete S Seismic Isolator Y Floor Plate T Wall Surface

Claims (4)

The base of the building or the installation part of the machine / equipment is fixedly placed in a cross shape with a space in the vertical direction, and the V-shaped notch sliding surfaces 2, 2, 4 and 4 are symmetrically formed on both sides. The upper guide rail 1 and the lower guide rail 3 to be formed, and the U-shaped upper fitting groove 6 and the inverted U-shaped lower fitting groove 7 are integrally formed by cross-crossing them at an interval in the vertical direction. A guide holder 5 which is slidably inserted and fitted to the outer surface of the intersection of the upper guide rail 1 and the lower guide rail 3 via an upper fitting groove 6 and an inverted U-shaped lower fitting groove 7; A wood-based porous material that is disposed in the upper fitting groove 6 and the inverted U-shaped lower fitting groove 7 so that the upper and lower guide rails 1, 3 and the guide holder 5 are slidably engaged by surface contact. By friction body made of carbon ceramics As a slider made of a wood ceramic that slidably engages the upper and lower guide rails 1 and 3 and the guide holder 5 by surface contact, a slider of the guide holder 5 is provided. It is fitted and disposed on the lower surface of the U-shaped upper fitting groove 6 and the upper surface of the inverted U-shaped lower fitting groove 7, and is slidable on the lower surface of the upper guide rail 1 and the upper surface of the lower guide rail 3, respectively. The lower surface slider 9 and the upper surface slider 10 that are brought into contact with each other and the U-shaped upper fitting groove 6 and the inverted U-shaped lower fitting groove 7 of the guide holder 5 are fitted to the sliding members 12 and 14 respectively. The upper guide rail 1 is slidable on the lower inclined surface on the V-shaped notch sliding surfaces 2 and 2 on both sides and the upper inclined surface on the V-shaped notch sliding surfaces 4 and 4 on both sides of the lower guide rail 3. Engage with contact The side sliders 11, 13 formed by being fitted to the sliding members 12, 14 are respectively connected to the U-shaped upper fitting groove 6 and the inverted U-shaped lower fitting groove 7. A sliding member in which the side sliders 11 and 13 are fitted to the both side surfaces via attachment screws 15 and the side sliders 11 and 13 via the pressure adjusting screws 16 or ball plungers when loosening via the attachment screws 15. 12 and 14 are swingably supported so that the contact pressure with respect to the V-shaped notch sliding surfaces 2 and 4 of the upper and lower guide rails 1 and 13 of the sliders 11 and 13 can be freely adjusted. Lubrication isolation device. As the upper and lower guide rails 1, 3, the friction characteristics possessed by the sliders 9, 10, 11, 13 by the friction material made of wood ceramics are more effectively exhibited, and the corrosion resistance against corrosion from the installation environment of the apparatus is provided. 2. The non-lubricated seismic isolation device according to claim 1, wherein a stainless steel special steel such as SUS304 is used for the purpose of increase. As a guide holder 5 in which sliders 9, 10, 11, and 13 slidably contacting and engaging the guide rails 1 and 3 are disposed in the upper and lower U-shaped and inverted U-shaped fitting grooves 6 and 7, 3. The non-lubricated seismic isolation device according to claim 1, wherein a stainless steel special steel such as SUS304 is used in order to increase corrosion resistance against corrosion from the installation environment of the device and to prevent a deviation due to secular change. . As the sliders 9, 10, 11 and 13 by friction bodies for slidable contact engagement between the upper and lower guide rails 1 and 3 and the guide holder 5, a porous carbon material of a plant other than wood is used as a raw material. 4. The non-lubricated seismic isolation device according to claim 1, 2 or 3, wherein a slider made of a friction body made of other vegetable ceramics obtained by a manufacturing method similar to ceramics is used.

Images