JP2976183B2 - Seismic isolation mount - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seismic isolation stand for mitigating the sway of an earthquake transmitted to an installation in a building during an earthquake to prevent the installation from overturning. The present invention relates to a seismic isolation base interposed between the installed objects.

[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 seismic isolation gantry 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,
And a second gantry 4 having a rectangular shape in a plane disposed on the gantry 3. An installation object 5 is installed on the second gantry 4 so as to prevent the tumbling of the quake caused by an earthquake. .

On the other hand, the first
Of the sides of the gantry 3, a first gantry 3 is slidably supported on the floor 2 along the arrow X direction on a pair of sides 3 a and 3 b facing each other parallel to the arrow X. Of the second gantry 4, and a pair of opposing sides 4 a, 4 b parallel to an arrow Y perpendicular to the arrow X are also provided on the side of the second mount 4. A second slide means 8 for slidably supporting the second gantry 4 along the Y direction with respect to the gantry 3 is provided.

Next, the first and second slide means 7 and 8 will be described. Since the first and second slide means 7 and 8 have the same structure except for a difference in the installation location, the first stand 3 Will be described as a representative of the first slide means 7 provided in the first embodiment, and the description of the other slide means will be omitted.

The first sliding means 7 includes a lower guide rail 10a fixed to the floor 2 and a lower guide rail 1a.
Upper guide rail 10b disposed in parallel along 0a
A guide rail 10 having a U-shaped cross section, which is formed by connecting the upper and lower guide rails 10a and 10b with each other, and a side wall 10c parallel to the upper and lower guide rails 10a and 10b. Rail 10
and a plurality of (at least two or more) lower guide rollers 11 rolling along the sides a, 3a, 3b, 4a, 4a of the first and second mounts 3, 4.
b are rotatably supported on shafts 12 provided upright.

The guide rail 10 described above and the lower guide roller 11 rolling along the guide rail 10 are each formed of a hard metal. Also, the lower guide roller 11 is provided with upper and lower guide rails 10a, 10b.
In order to prevent the rotation from being locked by simultaneously contacting both of them, the diameter L is set to the upper and lower guide rails 10.
It is formed smaller than the value of the height H between a and 10b (L <H).

Further, at each end of the above-mentioned guide rail 10, a wheel stop 13 for forcibly stopping the guide roller 11 rolling along the guide rail 10 is provided.

On the other hand, a pair of opposing sides 3c, 3d other than the pair of sides 3a, 3b of the first base 3 described above.
Reference position return means 12 for returning the first gantry traveling along the guide rail 10 to a predetermined reference position on the floor 2 and a second reference position Return means 13 is provided.

A pair of sides 4a, 4a of the second gantry 4
When the second gantry 4 travels along the guide rail 10 also between the pair of opposing sides 4c and 4d other than the pair b and the first gantry 3, the second gantry 4 1 stand 3
A third reference position return means 14 and a fourth reference position return means 15 for positioning and returning to a predetermined reference position are provided.

The first reference position return means 12 comprises a coil spring 16 having one end engaged with the side 3c of the first gantry 3 and the other end engaged with the floor 2.
The second reference position return means 13 also includes a coil spring 17 having one end engaged with the side 3 d of the first gantry 3 and the other end engaged with the floor 2. The third reference position return means 12 has a coil spring 1 having 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 return means 15 also includes a coil spring 19 having one end engaged with the side 4d of the second gantry 4 and the other end engaged with the upper surface of the first gantry 3. I have.

According to the seismic isolation mount 1 described above, when the floor 2 vibrates in the direction of the arrow X or Y or the combined direction thereof with respect to the installation object 5 due to the rolling in the event of an earthquake, the vibration is caused by the first vibration. The gantry 3 and the second gantry 4 are absorbed by traveling in the directions of the arrows X and Y along the first and second sliding means 7 and 8, respectively, to prevent the installation object 5 from tipping over as much as possible. I do.

[0014]

According to the conventional seismic isolation mount 1 described above, if only a roll acts on the installation object 5 installed on the seismic isolation mount 1 in the event of an earthquake, the problem is solved. Although the vibration can be absorbed as much as possible and the installation object 5 can be prevented from overturning, the first gantry 3 and the second gantry 4 travel along the first and second sliding means 7 and 8, respectively. During the operation, a vertical sway is generated, and as a result, as shown in FIG.
Are inclined with respect to the guide rail 10, and thus a pair of lower guide rollers 11, 1 constituting the first slide means 7.
One of them may be pressed against the upper guide rail 10b of the guide rail 10.

As described above, when one of the pair of lower guide rollers 11 constituting the first slide means 7 is pressed against the upper guide rail 10b due to the inclination of the first gantry 3, the second running roller 11 is moved. There is a case where the traveling of the first gantry 3 itself is locked, and therefore, there is a possibility that the installed object 5 disposed on the second gantry 4 may fall over due to inertia force or the like.

In view of the above-mentioned circumstances, an object of the present invention is to provide a seismic isolation base on which a base on which an installation object is mounted can smoothly travel along a guide rail at all times.

[0017]

In order to solve the above-mentioned problems, in a first seismic isolation mount according to the present invention, objects installed in a building are opposed to each other on a floor of the building. A first cradle that reciprocates via a pair of first sliding means, and a second cradle that reciprocates via a pair of opposed second sliding means disposed on the first gantry.
So that the rolling of the earthquake is mitigated by the reciprocating movement of the first gantry by the first sliding means and the reciprocating movement of the second gantry by the second sliding means. In the seismic isolation base described above, the first sliding means includes a lower guide rail fixed to a floor in the building, and an upper guide disposed in parallel with and in the same direction along the lower guide rail. A guide rail having a U-shaped cross section, comprising a rail, and a side wall formed parallel to and in the same direction as the upper and lower guide rails connecting the upper and lower guide rails; A plurality of lower guide rollers disposed and rolling along the lower guide rail; and a plurality of lower guide rollers disposed on the side of the first gantry and rolling along the upper guide rail in the same direction as the lower guide roller. Multiple upper guides And the second slide means is provided on a lower guide rail fixed on the first gantry, and on a lower guide rail disposed in parallel and in the same direction along the lower guide rail. A guide rail having a U-shaped cross section including a guide rail, a side wall formed parallel to and along the same direction as the upper and lower guide rails connecting the upper and lower guide rails, and a side of the second mount. And a plurality of lower guide rollers that roll along the lower guide rails, and that roll along the upper guide rails in the same direction as the lower guide rollers that are disposed on the sides of the second gantry. And a plurality of upper guide rollers.

Further, in the second seismic isolation mount according to the present invention, the object installed in the building reciprocates via a pair of first sliding means opposed to each other provided on the floor of the building. The apparatus is installed via a first gantry and a second gantry which reciprocates via a pair of opposing second slide means disposed on the first gantry, and suppresses the roll of the earthquake by the first gantry. In a seismic isolation base designed to be relieved by reciprocation of the first gantry by one slide unit and reciprocation of the second gantry by the second slide unit, the first slide unit is A lower guide rail fixed to the floor in the building; an upper guide rail arranged in parallel with and along the lower guide rail; and the upper and lower guide rails connecting the upper and lower guide rails. Parallel to and the same A guide rail having a U-shaped cross section including a side wall formed along the first base; a plurality of lower guide rollers disposed on the side of the first gantry and rolling along the lower guide rail; A plurality of upper guide rollers that are arranged on a side of a first gantry and roll along the upper guide rail in the same direction as the lower guide rollers;
A plurality of side wall guide rollers that are arranged on the side of the gantry and roll along the upper and lower guide rollers along the side wall in the same direction as the upper and lower guide rollers. A lower guide rail fixed on the gantry, an upper guide rail arranged in parallel with the lower guide rail and along the same direction, and the upper and lower guide rails connecting the upper and lower guide rails. A guide rail having a U-shaped cross section composed of parallel and side walls formed along the same direction, and a plurality of lower rails arranged beside the second gantry and rolling along the lower guide rail. A guide roller, a plurality of upper guide rollers disposed on the side of the second gantry and rolling in the same direction as the lower guide roller along the upper guide rail, and a plurality of upper guide rollers on the side of the second gantry. Along the side wall Serial on, and be configured by a plurality of side wall guide rollers that roll down the guide rollers in the same direction.

[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 base 2 according to the present invention.
0 is a conceptual perspective view of FIG.

The first sliding means 7 of the first seismic isolation frame 20 includes a lower guide rail 10a fixed to the floor 2;
The upper guide rails 10b, which are arranged in parallel in the same direction along the lower guide rails 10a, and connect the upper and lower guide rails 10a, 10b, and also along the upper and lower guide rails 10a, 10b. A guide rail 10 having a U-shaped cross section composed of parallel and side walls 10c arranged in the same direction, and a plurality (at least two) of the guide rails 10 rolling along the lower guide rail 10a And a plurality of (at least two or more) upper guide rollers 30 that roll in the same direction as the lower guide rollers 11 along the upper guide rails 10b of the guide rails 10. The upper and lower guide rollers 11 and 30 are rotatably supported by shafts 12 erected on the sides 3a and 3b of the first gantry 3, respectively.

The second sliding means 8 of the first seismic isolation base 20 is provided with a lower guide rail 10a fixed on the first base 3 and is parallel along the lower guide rail 10a.
Moreover, the upper guide rails 10 arranged in the same direction
b and a side wall 10c that connects the upper and lower guide rails 10a and 10b and that is also parallel to the upper and lower guide rails 10a and 10b and that is arranged in the same direction. A guide rail 10 and a plurality (at least two or more) of lower guide rollers 1 which roll along the lower guide rail 10a of the guide rails 10
1 and a plurality (at least two or more) of upper guide rollers 30 that roll in the same direction as the lower guide rollers 11 along the upper guide rails 10 b of the guide rails 10. Numeral 30 is rotatably supported on shafts 12 erected on the sides 4a and 4b of the second gantry 4, respectively.

Each of the above-described 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.
The diameters L, M of the upper and lower guide rollers 11, 30 are formed smaller than the height H between the upper and lower guide rails 10a, 10b (L, M <H).
Are not simultaneously contacted with both the upper and lower guide rails 10a and 10b.

According to the first seismic isolation base 20 shown in FIG. 1 described above, the installation object 5 installed on the seismic isolation
Rolling acts during an earthquake, and the first frame 3 and the second frame 4 are first and second, respectively, to alleviate the rolling.
The first gantry 3 is moved along the slide means 7 and 8 during the traveling due to factors such as the occurrence of vertical swing as shown in FIG. 2 which is described on behalf of the first gantry 3. Even if an attempt is made to incline with respect to the guide rail 10, since the pair of upper guide rollers 30, 30 constituting the first slide means 7 are always in contact with the upper guide rail 10 b of the guide rail 10, the first base 3 Does not incline with respect to the guide rail 10, so that the smooth rolling of the upper and lower guide rollers 11, 30 is maintained as it is. It goes without saying that the above-described second slide means 8 also has the same function.

Therefore, according to the first seismic isolation frame 20 described above, even if the vertical swing occurs, the pair of guide rails 1
Since the first and second gantry 3 and 4 are kept running smoothly along 0, the fall of the installed object 5 is prevented as much as possible.

Next, the second base isolation frame 40 according to the present invention
Will be described.

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

The first sliding means 7 of the second seismic isolation mount 40 includes a lower guide rail 10a fixed to the floor 2;
The upper guide rails 10b, which are arranged in parallel in the same direction along the lower guide rails 10a, and connect the upper and lower guide rails 10a, 10b, and also along the upper and lower guide rails 10a, 10b. A guide rail 10 having a U-shaped cross section composed of parallel and side walls 10c arranged in the same direction, and a plurality (at least two) of the guide rails 10 rolling along the lower guide rail 10a A plurality of (at least two or more) upper guide rollers 30 that roll in the same direction as the lower guide rollers 11 along the upper guide rails 10b of the guide rails 10; The side wall 1 parallel to the guide rails 10a and 10b
And 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, 30 are shafts that are erected on the sides 3a, 3b of the first gantry 3, respectively. The side wall guide roller 50 is rotatably supported via a shaft 52 on brackets 51 erected on the sides 3a, 3b of the first gantry 3, respectively. The second sliding means 8 of the second seismic isolation base 40 also includes a lower guide rail 10a similarly fixed on the first base 3 and a lower guide rail 10a.
a upper guide rail 10b, which is arranged in parallel in the same direction as FIG.
a, 10b, which also connects the upper and lower guide rails 10
a, a guide rail 10 having a U-shaped cross section composed of side walls 10c arranged in parallel and in the same direction along the base rails 10a and 10b, and rolling along the lower guide rail 10a of the guide rails 10. Multiple (at least 2 or more)
A lower guide roller 11, a plurality of (at least two or more) upper guide rollers 30 rolling in the same direction as the lower guide roller 11 along the upper guide rail 10b of the guide rails 10, and an upper and lower guide rail 10a, 10
b) and a plurality of (at least two or more) side wall guide rollers 50 rolling along the side wall 10 c parallel to the side wall 10 b. Each bracket 51 is rotatably supported via a shaft 52 on a standing bracket 51.

The above-mentioned side wall guide rollers 50 are also made of a hard metal.

According to the second seismic isolation mount 40 described above, a roll acts on the installation object 5 installed on the seismic isolation mount 20 in the event of an earthquake, and the first vibration is applied to alleviate the roll. While the gantry 3 and the second gantry 4 are traveling along the first and second slide means 7 and 8, respectively, the first gantry 3 is inclined with respect to the guide rail 10 due to factors such as upright swaying. Even so, since the pair of upper guide rollers 30 constituting the first slide means 7 is always in contact with the upper guide rail 10b of the guide rail 10, the first gantry 3 does not tilt. Therefore, the smooth rolling of the upper and lower guide rollers 11 and 30 is maintained as it is, whereby the smooth running of the first and second gantry 3 and 4 along the pair of guide rails 10 is maintained, and the installation object 5 falls down. Is prevented as much as possible That.

Further, as shown in FIG. 4 which is a top view of a cross section of a main part of the first gantry 3, some force acts during an earthquake, and the first gantry 3 rotates as shown by the arrow Z. Thus, even if the side portions 3a and 3b of the first gantry 4 abut against the side wall 10c to lock the traveling thereof, the pair of side wall guide rollers 50 and 50 constituting the first sliding means 7 are Since it is always in contact with the side wall 10c of the guide rail 10,
The first gantry 3 does not rotate on a plane, so that the smooth rolling of the upper and lower and side wall guide rollers 11, 30, and 50 is maintained as it is, and thereby, the first and the third 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 function.

[0033]

As described above, in the first seismic isolation mount of the present invention, the first and second mounts which run along the guide rail having a U-shaped cross section are provided with the upper and lower sides. Since the upper and lower guide rollers that contact each guide rail and roll in the same direction are arranged, even if the first and second gantry are inclined with respect to the guide rail due to the vibration during the earthquake, The inclination is prevented by the upper and lower guide rollers, so that the first and second pedestals always run smoothly along the guide rails, and allow the objects mounted on the first and second pedestals to overturn. Can be prevented.

Also, in the second seismic isolation mount of the present invention, the first and second mounts running along the guide rail having a U-shaped cross section contact the upper and lower guide rails and contact the same. Because the upper and lower guide rollers that roll in the direction and the side wall guide rollers that contact the side walls are arranged, even if the first and second gantry are inclined with respect to the guide rail due to the vibration during the earthquake, The inclination is prevented by the upper and lower guide rollers, and the first and the second are viewed from a plane.
When the gantry attempts to rotate, the rotation is prevented by the side wall guide rollers, so that the first and second gantry are
The vehicle always travels smoothly along the guide rails, so that the installed objects mounted on the first and second frames can be prevented from tipping over as much as possible.

[Brief description of the drawings]

FIG. 1 is a conceptual perspective view of a principal part cutaway of a first seismic isolation gantry according to the present invention.

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

FIG. 3 is a conceptual perspective view of a principal part cutaway of a second seismic isolation gantry according to the present invention.

FIG. 4 is a conceptual plan sectional view showing the operation of a second seismic isolation gantry according to the present invention.

FIG. 5 is a conceptual perspective view of a main part cutaway of a conventional seismic isolation base.

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

[Explanation of symbols]

 2 floor 3 first gantry 4 second gantry 5 installation object 7 first slide means 8 second slide means 20 seismic isolation gantry 10a lower guide rail 10b upper guide rail 10c Side wall 11: Lower guide roller 20, 40: Seismic isolation gantry 30: Upper guide roller 50: Side wall guide roller

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-4-254677 (JP, A) JP-A-4-113046 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) F16F 15/00-15/32

Claims (2)

(57) [Claims] 1. A first gantry for reciprocatingly moving an object installed in a building via a pair of first sliding means opposed to each other disposed on a floor of the building, and on the first gantry. And a second frame which reciprocates via a pair of second slide means opposed to each other, and is provided with a means for reciprocating the first frame by means of the first slide means. And a seismic isolation frame configured to be relieved by reciprocating travel of the second frame by the second slide device, wherein the first slide device includes a lower guide rail fixed to a floor in the building. An upper guide rail disposed parallel to and along the same direction along the lower guide rail; and a side wall formed parallel to and along the same direction as the upper and lower guide rails connecting the upper and lower guide rails. U-shaped cross section -Shaped guide rail, a plurality of lower guide rollers arranged on the side of the first gantry and rolling along the lower guide rail, and the upper guide arranged on a side of the first gantry A plurality of upper guide rollers that roll in the same direction as the lower guide rollers along a rail, and wherein the second sliding means includes a lower guide rail fixed on the first gantry; An upper guide rail arranged in parallel with the lower guide rail and along the same direction;
A guide rail having a U-shaped cross-section comprising side walls formed in parallel with and in the same direction as the upper and lower guide rails connecting the upper and lower guide rails, and disposed on the side of the second gantry. A plurality of lower guide rollers rolling along the lower guide rail; and a plurality of upper guides disposed on the side of the second gantry and rolling along the upper guide rail in the same direction as the lower guide roller. A seismic isolation mount characterized by comprising a guide roller. 2. A first gantry for reciprocatingly moving an installation object installed in a building via a pair of first sliding means opposed to each other provided on a floor of the building, and a first gantry on the first gantry. And a second gantry reciprocatingly traveling through a pair of second slide means opposed to each other, and is provided with a means for causing the earthquake to sway and reciprocate the first gantry by the first slide means. In a seismic isolation frame configured to relax by traveling and reciprocating traveling of the second gantry by the second sliding means, the first sliding means is fixed to a floor in the building by a lower guide rail. And an upper guide rail disposed in parallel and in the same direction along the lower guide rail, and formed in parallel and in the same direction as the upper and lower guide rails connecting the upper and lower guide rails. Of the cross-section A plurality of lower guide rollers disposed on the side of the first gantry and rolling along the lower guide rail; and a plurality of lower guide rollers disposed on the side of the first gantry. A plurality of upper guide rollers rolling in the same direction as the lower guide roller along the guide rail; and a plurality of upper guide rollers arranged on the side of the first gantry in the same direction as the upper and lower guide rollers along the side wall. A plurality of side wall guide rollers that roll along the second slide means, and wherein the second slide means is parallel and identical to the lower guide rail fixed on the first gantry along the lower guide rail. An upper guide rail arranged along the direction,
A guide rail having a U-shaped cross-section comprising side walls formed in parallel with and in the same direction as the upper and lower guide rails connecting the upper and lower guide rails, and disposed on the side of the second gantry. A plurality of lower guide rollers rolling along the lower guide rail; and a plurality of upper guides disposed on the side of the second gantry and rolling along the upper guide rail in the same direction as the lower guide roller. A guide roller, and a plurality of side wall guide rollers disposed on the side of the second gantry and rolling along the side walls in the same direction as the upper and lower guide rollers. Seismic isolation mount.