JPH09303481A - Base isolation frame - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a base isolation frame for always smoothly running a frame on which substance is mounted along a guide rail. SOLUTION: Lower guide rollers 11 perform rolling along a lower guide rail 10a of a guide rail 10 having an inversed U-shape at its section. Upper guide rollers 30 perform rolling along an upper guide rail 10b. The lower guide rollers 11 and the upper guide rollers 30 are arranged on the sides of first and second frames 3, 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seismic isolation mount for preventing the fall of an installation by alleviating the rolling motion of the earthquake transmitted to the installation in the building in the event of an earthquake. The present invention relates to a base isolation stand that is interposed between the installation and the installation.

[0002]

2. Description of the Related Art Conventionally, seismic isolation mounts have been proposed in which, in the event of an earthquake, the sway of an earthquake transmitted to an installation in a building is reduced to prevent the installation from falling.

FIG. 5 is a conceptual perspective view showing a conventional base isolation base 1.

[0004] The seismic isolation frame 1 is a floor 2 in a building (not shown).
A first base 3 having a planar rectangular shape disposed thereon,
It is composed of a second pedestal 4 having a planar rectangular shape arranged on the pedestal 3 of the above, and an installation object 5 for preventing the fall of the sway of an earthquake is installed on the second pedestal 4. .

On the other hand, the first
The first pedestal 3 is slidably supported on the floor 2 along a pair of lateral sides 3a and 3b of the pedestal 3 which are parallel to the arrow X and are opposed to each other. Of the second pedestal 4 and the pair of lateral sides 4a, 4b facing each other in parallel to the arrow Y perpendicular to the arrow X have the first sliding means 7a. Second slide means 8 for slidably supporting the second pedestal 4 along the arrow Y direction with respect to the pedestal 3 is provided.

Next, the first and second slide means 7 and 8 will be described. The first and second slide means 7 and 8 have the same structure except that the installation locations are different. The first slide means 7 disposed in the above will be described as a representative, and description of the other slide means will be omitted.

The first slide means 7 includes a lower guide rail 10a fixed to the floor 2 and the lower guide rail 1
Upper guide rail 10b arranged in parallel along 0a
And a guide rail 10 having a U-shaped cross section that connects the upper and lower guide rails 10a and 10b, and a side wall 10c that is also parallel to the upper and lower guide rails 10a and 10b, and a lower guide of the guide rail 10. Rail 10
The lower guide roller 11 includes a plurality of (at least two or more) lower guide rollers 11 rolling along a, and the lower guide rollers 11 are lateral sides 3a, 3b, 4a, 4 of the first and second mounts 3, 4.
The shafts 12 erected on b are rotatably supported.

The above-described guide rail 10 and the lower guide roller 11 rolling along the guide rail 10 are made of hard metal. In addition, the lower guide roller 11 includes the upper and lower guide rails 10a and 10b.
The diameter L of the upper and lower guide rails 10 is set so as to prevent the rotation from being locked due to simultaneous contact with both sides.
The height H between a and 10b is smaller than the height H (L <H).

A car stop 13 for forcibly stopping the guide roller 11 rolling along the guide rail 10 is provided at each end of the guide rail 10 described above.

On the other hand, other than the pair of lateral sides 3a, 3b of the above-mentioned first frame 3, a pair of lateral sides 3c, 3d facing each other.
The first reference position returning means 12 and the second reference position for positioning and returning the first gantry traveling along the guide rail 10 to the predetermined reference position of the floor 2 between the floor and the floor 2, respectively. Returning means 13 is provided.

Further, a pair of lateral sides 4a, 4 of the second mount 4 are provided.
When the second gantry 4 travels along the guide rail 10 between the pair of lateral sides 4c, 4d facing each other other than b and the first gantry 3, the second gantry 4 is moved to the first gantry 3 when the second gantry 4 moves. 1 stand 3
The third reference position returning means 14 and the fourth reference position returning means 15 for positioning and returning to the predetermined reference position are provided.

The first reference position returning means 12 is composed of a coil spring 16 having one end engaged with the side 3c of the first frame 3 and the other end engaged with the floor 2.
The second reference position returning means 13 is also composed of a coil spring 17 whose one end is engaged with the side 3d of the first gantry 3 and whose other end is engaged with the floor 2. The third reference position returning means 12 has one end engaged with the side 4c of the second gantry 4 and the other end engaged with the upper surface of the first gantry 3
The fourth reference position returning means 15 is also constituted by the coil spring 19 whose one end is engaged with the side 4d of the second pedestal 4 and whose other end is engaged with the upper surface of the first pedestal 3. There is.

According to the above-described base isolation base 1, when the floor 2 vibrates with respect to the installation object 5 in the X and Y directions of the installation object 5 or a combination direction thereof due to the rolling motion at the time of the earthquake, the first vibration occurs. The pedestal 3 and the second pedestal 4 are absorbed by traveling in the directions X and Y of the arrows along the first and second slide means 7 and 8, respectively, to prevent the installation object 5 from tipping over as much as possible. To do.

[0014]

By the way, according to the conventional seismic isolation mount 1 described above, if only the rolling motion acts on the installation object 5 installed on the seismic isolation mount 1 during an earthquake, Although it is possible to absorb the vibration as much as possible to prevent the installation object 5 from toppling over, the first pedestal 3 and the second pedestal 4 travel along the first and second sliding means 7 and 8, respectively. During the operation, vertical shaking occurs, and as a result of this influence, as shown in FIG.
Are inclined with respect to the guide rail 10, and therefore, a pair of lower guide rollers 11 and 1 that constitute the first slide means 7 are provided.
There is a case where one of the first and the second guide rails comes into pressure contact with the upper guide rail 10b of the guide rail 10.

As described above, when one of the pair of lower guide rollers 11, 11 constituting the first slide means 7 is pressed against the upper guide rail 10b due to the inclination of the first frame 3, the moving first guide roller 10b is moved. In some cases, the traveling itself of the first pedestal 3 may be locked, which may cause the installation object 5 arranged on the second pedestal 4 to fall due to inertial force or the like.

In view of the above circumstances, it is an object of the present invention to provide a seismic isolation mount on which a mount on which an installation is mounted can always smoothly run along a guide rail.

[0017]

In order to solve the above-mentioned problems, in a first seismic isolation mount according to the present invention, objects to be installed in a building face each other on the floor of the building. And a second base that reciprocates through a pair of first slide means and a pair of second slide means that are disposed on the first base and that face each other.
And the rolling movement of the first cradle by the first slide means and the reciprocating movement of the second cradle by the second slide means. In the seismic isolation mount, the first slide means includes a lower guide rail fixed to a floor in the building, an upper guide rail arranged in parallel along the lower guide rail, and the upper and lower guides. A guide rail having a U-shaped cross section, which includes side walls parallel to the upper and lower guide rails that connect the rails, and a plurality of guide rails that are arranged on the side of the first frame and roll along the lower guide rails. The second slide means is composed of a lower guide roller and a plurality of upper guide rollers arranged laterally of the first cradle and rolling along the upper guide rail.
A cross section consisting of a lower guide rail fixed on the frame of the upper guide rail, an upper guide rail arranged in parallel along the lower guide rail, and a side wall parallel to the upper and lower guide rails connecting the upper and lower guide rails. A U-shaped guide rail, a plurality of lower guide rollers arranged on the side of the second mount and rolling along the lower guide rail, and arranged on the side of the second mount. It is constituted by a plurality of upper guide rollers that roll along the upper guide rail.

Further, in the second seismic isolation mount according to the present invention, the installation object installed in the building is reciprocated through the pair of first sliding means arranged on the floor of the building and facing each other. It is installed via a first cradle and a second cradle that reciprocates through a pair of second slide means that are arranged on the first cradle and that face each other. In the seismic isolation mount, wherein the first slide means is reciprocated by the first slide means and the second slide means is reciprocated by the second slide means. From a lower guide rail fixed to the floor in the building, an upper guide rail arranged in parallel along the lower guide rail, and a side wall parallel to the upper and lower guide rails connecting the upper and lower guide rails. Which has a U-shaped cross section Id rails, a plurality of lower guide rollers arranged on the side of the first mount and rolling along the lower guide rail, and along the upper guide rail arranged on the side of the first mount. And a plurality of side wall guide rollers arranged laterally of the first gantry and rolling along the side wall, and the second sliding means is composed of: A lower guide rail fixed on the first frame, an upper guide rail arranged in parallel along the lower guide rail, and a side wall parallel to the upper and lower guide rails connecting the upper and lower guide rails. A guide rail having a U-shaped cross section, a plurality of lower guide rollers arranged on the side of the second mount and rolling along the lower guide rail, and on the side of the second mount. Is installed along the upper guide rail. And be configured by a plurality of upper guide rollers which roll by a plurality of side wall guide rollers which roll is arranged on a side of said second frame along said sidewall Te.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a seismic isolation frame according to the present invention will be described below in detail.

FIG. 1 shows a first seismic isolation mount 2 according to the present invention.
In the conceptual perspective view of 0, the same parts as those in FIG.

The first slide means 7 of the first seismic isolation mount 20 has a lower guide rail 10a fixed to the floor 2,
An upper guide rail 10b arranged in parallel along the lower guide rail 10a, and the upper and lower guide rails 10a,
The upper and lower guide rails 10a, which connect between 10b,
A guide rail 10 having a U-shaped cross section formed of parallel side walls 10c along 10b, and a plurality of (at least two or more) lower guide rollers 11 rolling along the lower guide rail 10a of the guide rails 10. And a plurality of (at least two or more) upper guide rollers 30 that roll along the upper guide rails 10b of the guide rails 10. The upper and lower guide rollers 11 and 30 are located on the side 3a of the first frame 3. 3b are rotatably supported by shafts 12 provided upright.

The second sliding means 8 of the first seismic isolation mount 20 is arranged in parallel with the lower guide rail 10a fixed on the first mount 3 and along the lower guide rail 10a. A guide rail 10 having a U-shaped cross section, which includes an upper guide rail 10b and a side wall 10c that connects the upper and lower guide rails 10a and 10b and is also parallel to the upper and lower guide rails 10a and 10b. A plurality of (at least two or more) lower guide rollers 11 that roll along the lower guide rails 10a among 10 and a plurality (at least two or more) that roll along the upper guide rails 10b of the guide rails 10; Upper guide roller 3
0, and the upper and lower guide rollers 11 and 30 are the second
Shafts 12 erected on the sides 4a, 4b of the gantry 4
It is supported rotatably.

The above-mentioned guide rails 10 and the upper and lower guide rollers 11 and 30 rolling along the guide rails 10 are made of hard metal, respectively.
Further, the diameters L and M of the upper and lower guide rollers 11 and 30 are formed smaller than the value of the height H between the upper and lower guide rails 10a and 10b (L, M <H).
Is configured so as not to contact both the upper and lower guide rails 10a and 10b at the same time.

According to the first seismic isolation mount 20 shown in FIG. 1 described above, with respect to the installation object 5 installed on the seismic isolation mount 20,
Rolling acts during an earthquake, and the first cradle 3 and the second pedestal 4 are respectively provided in the first and second cradle 3 in order to reduce the roll.
While the vehicle travels along the slide means 7 and 8, the first frame 3 is moved during the traveling due to factors such as the occurrence of vertical rocking as shown in FIG. Even if an attempt is made to incline with respect to the guide rail 10, the pair of upper guide rollers 30, 30 constituting the first slide means 7 are always in contact with the upper guide rail 10b of the guide rail 10, so that the first pedestal 3 Does not incline with respect to the guide rail 10, and therefore the smooth rolling of the upper and lower guide rollers 11 and 30 is maintained. It goes without saying that the above-mentioned second slide means 8 also has the same effect.

Therefore, according to the first seismic isolation mount 20 described above, the pair of guide rails 1 is not affected even when vertical shaking occurs.
Since the smooth running of the first and second pedestals 3 and 4 along 0 is maintained, the falling of the installation object 5 is prevented as much as possible.

Next, a second seismic isolation mount 40 according to the present invention.
Will be explained.

FIG. 3 shows a second seismic isolation mount 4 according to the present invention.
In a conceptual perspective view of 0, the same parts as those in FIG.

The first slide means 7 of the second seismic isolation mount 40 has a lower guide rail 10a fixed to the floor 2,
An upper guide rail 10b arranged in parallel along the lower guide rail 10a, and the upper and lower guide rails 10a,
The upper and lower guide rails 10a, which connect between 10b,
A guide rail 10 having a U-shaped cross section formed of parallel side walls 10c along 10b, and a plurality of (at least two or more) lower guide rollers 11 rolling along the lower guide rail 10a of the guide rails 10. Of the guide rails 10, a plurality (at least two or more) of upper guide rollers 30 rolling along the upper guide rails 10b, and the side wall 1 parallel to the upper and lower guide rails 10a and 10b.
A plurality of (at least two or more) side wall guide rollers 50 that roll along 0c, of which the upper and lower guide rollers 11 and 30 are shafts provided upright on the sides 3a and 3b of the first frame 3, respectively. 12 is rotatably supported, and the side wall guide roller 50 is rotatably supported by a bracket 51 which is erected on each side 3a, 3b of the first frame 3 via a shaft 52.

The second sliding means 8 of the second seismic isolation mount 40 is also arranged in parallel with the lower guide rail 10a fixed on the first mount 3 and along the lower guide rail 10a. The upper guide rail 10b and the upper and lower guide rails 10a and 10b which are connected to each other, and the side wall 10c which is also parallel to the upper and lower guide rails 10a and 10b. Of the guide rails 10, a plurality of (at least two or more) lower guide rollers 11 that roll along the lower guide rails 10a.
A plurality of (at least two or more) upper guide rollers 30 rolling along the upper guide rails 10b of the guide rails 10, and rolling along the side walls 10c parallel to the upper and lower guide rails 10a and 10b. A plurality of (at least two or more) side wall guide rollers 50, and the side wall guide rollers 50 are provided on the sides 4a, 4a of the second mount 4.
The brackets 51 erected on the respective b are rotatably supported via shafts 52.

Each of the side wall guide rollers 50 described above is also made of a hard metal.

According to the above-described second seismic isolation mount 40, the installation object 5 installed on the seismic isolation mount 20 is subjected to a rolling motion at the time of an earthquake, and the first shaking motion is mitigated. While the pedestal 3 and the second pedestal 4 are traveling along the first and second sliding means 7 and 8, respectively, the first pedestal 3 is inclined with respect to the guide rail 10 due to factors such as standing and shaking. Even if an attempt is made, since the pair of upper guide rollers 30 constituting the first slide means 7 are always in contact with the upper guide rail 10b of the guide rail 10, the first mount 3 does not tilt, Therefore, the smooth rolling of the upper and lower guide rollers 11 and 30 is maintained as it is, so that the smooth running of the first and second pedestals 3 and 4 along the pair of guide rails 10 is maintained, and the installed object 5 falls over. Is prevented as much as possible That.

Further, as shown in FIG. 4 which is a cross-sectional top view of the main parts of the first gantry 3, some force acts on the first gantry 3 to rotate the first gantry 3 as indicated by an arrow Z. Therefore, even if the lateral sides 3a, 3b of the first gantry 4 come into contact with the side wall 10c to lock the traveling thereof, the pair of side wall guide rollers 50, 50 constituting the first slide means 7 are Since it is always in contact with the side wall 10c of the guide rail 10,
The first pedestal 3 does not rotate on a plane, so that the smooth rolling of the upper and lower and side wall guide rollers 11, 30, 50 is maintained as it is, and thus the first and the first guide rails 10 along the pair of guide rails 10 are kept. The smooth running of the second mounts 3 and 4 is maintained, and the installation object 5 is prevented from falling down as much as possible.

It goes without saying that the above-mentioned second slide means 8 also has the same effect.

[0034]

As described above, according to the first seismic isolation mount of the present invention, the upper and lower sides of the first and second mounts running along the guide rails having a U-shaped cross section are provided. Since the upper and lower guide rollers that come into contact with the respective guide rails are arranged, even if the first and second mounts try to incline with respect to the guide rails due to a vibration during an earthquake, the inclination is determined by the upper and lower guide rollers. Therefore, the first and second pedestals always run smoothly along the guide rails, and it is possible to prevent the installation objects mounted on the first and second pedestals from toppling over as much as possible. .

In the second seismic isolation mount of this invention,
A vertical guide roller that contacts the upper and lower guide rails and a side wall guide roller that contacts the side wall are arranged on each side of the first and second mounts that travel along the guide rail having a U-shaped cross section. Therefore, due to the vibration during the earthquake,
Even if the first and second pedestals try to incline with respect to the guide rails, the inclination is blocked by the upper and lower guide rollers, and even if the first and second pedestals try to rotate when seen in a plan view, the rotation thereof is the side wall. It is blocked by the guide rollers, so that the first and second pedestals always run smoothly along the guide rails, so that the installation objects mounted on the first and second pedestals can fall over as much as possible. Can be prevented.

[Brief description of drawings]

FIG. 1 is a conceptual perspective view of a main isolation structure of a first seismic isolation mount according to the present invention.

FIG. 2 is a conceptual side view showing the operation of the first base isolation frame according to the present invention.

FIG. 3 is a conceptual perspective view of a main portion of a second seismic isolation stand according to the present invention.

FIG. 4 is a schematic plan sectional view of an essential part showing the action of the second base isolation frame according to the present invention.

FIG. 5 is a conceptual perspective view of a conventional seismic isolation stand with its main part broken.

FIG. 6 is a conceptual side view of a conventional seismic isolation mount.

[Explanation of symbols]

 2 ... Floor 3 ... 1st mount 4 ... 2nd mount 5 ... Installation object 7 ... 1st slide means 8 ... 2nd slide means 20 ... Seismic isolation mount 10a ... Lower guide rail 10b ... Upper guide rail 10c ... Side wall 11 ... Lower guide roller 20, 40 ... Seismic isolation stand 30 ... Upper guide roller 50 ... Side wall guide roller

Claims (2)

[Claims] 1. A first gantry that reciprocates an installation object installed in a building through a pair of first slide means arranged on the floor of the building and facing each other, and on the first gantry. Is installed via a second pedestal that reciprocates through a pair of second slide means that are arranged opposite to each other, and the lateral movement of the earthquake is reciprocally traveled by the first cradle by the first slide means. And a seismic isolation mount which is relaxed by the reciprocating movement of the second mount by the second slide unit, wherein the first slide unit is a lower guide rail fixed to a floor in the building. A guide rail having a U-shaped cross section, the guide rail having an upper guide rail arranged in parallel along the lower guide rail and a side wall connecting the upper and lower guide rails and parallel to the upper and lower guide rails; It is installed on the side of the gantry 1. A plurality of lower guide rollers that roll along the lower guide rail, and a plurality of upper guide rollers that are arranged on the side of the first frame and roll along the upper guide rail, The second slide means connects the lower guide rail fixed on the first cradle, the upper guide rail arranged in parallel along the lower guide rail, and the upper and lower guide rails. A guide rail having a U-shaped cross section formed of side walls parallel to the upper and lower guide rails; a plurality of lower guide rollers arranged laterally of the second mount and rolling along the lower guide rail; A seismic isolation mount comprising a plurality of upper guide rollers arranged laterally of the second mount and rolling along the upper guide rail. 2. A first gantry that reciprocates an installation object installed in a building through a pair of first slide means that are arranged on the floor of the building and that face each other, and on the first gantry. And a second pedestal that reciprocates through a pair of second sliding means that are opposed to each other, and the lateral movement of an earthquake is reciprocated by the first sliding means to and from the first pedestal. In a seismic isolation mount adapted to be relaxed by traveling and reciprocating traveling of the second mount by the second slide unit, the first slide unit is a lower guide rail fixed to a floor in the building. And an upper guide rail arranged in parallel along the lower guide rail, and a side wall parallel to the upper and lower guide rails connecting the upper and lower guide rails and having a U-shaped cross section. Located on the side of the first mount A plurality of lower guide rollers that roll along the lower guide rails; a plurality of upper guide rollers that are disposed laterally of the first frame and that roll along the upper guide rails; A plurality of side wall guide rollers arranged on the side of the gantry and rolling along the side wall, and the second slide means is a lower guide rail fixed on the first gantry. A guide rail having a U-shaped cross section, the guide rail having an upper guide rail arranged in parallel along the lower guide rail and a side wall connecting the upper and lower guide rails and parallel to the upper and lower guide rails; A plurality of lower guide rollers arranged on the side of the second mount and rolling along the lower guide rail; and a plurality of lower guide rollers arranged on the side of the second mount and rolling along the upper guide rail. The upper guide roller and the 2. A seismic isolation mount comprising a plurality of side wall guide rollers arranged on the side of the second mount and rolling along the side wall.