JP3190575U - Seismic isolation floor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seismic isolation floor which can sufficiently exhibit seismic isolation performance, can secure a sufficient installation area, and does not require a buffer plate (expansion) covering a gap which is a dangerous place. SOLUTION: The seismic isolation floor has a structure in which a seismic isolation support body 4 that moves horizontally at the time of an earthquake is arranged in the building skeleton, the upper surface is adjusted to the same height, and the lower surface is the floor of the building skeleton. A support leg 7 provided with a level adjusting member 2b fixed at a predetermined position of the slab 2c, and an upper frame 6 and a lower frame 5 fixed to the upper surface of the support leg, and a horizontal movement device during an earthquake between the frames. A seismic isolation support 4 having a built-in structure such as a seismic isolation support 4 and a fixed floor 2 formed on the upper surface of a predetermined number of support legs and formed and arranged on the entire peripheral edge of the lower frame 5 are provided. The fixed floor is in close contact with or close to the edge of the entire circumference of the building, and the height of the fixed floor is set to the height of the seismic isolation support within the range that does not hinder the movement of the seismic isolation support during an earthquake. Was provided. [Selection diagram] Fig. 1

Description

  The present invention relates to a new and innovative seismic isolation floor, and more specifically, a shock absorber (expansion) that is an essential structure when various seismic isolation devices are installed, that is, installation of the seismic isolation device. Without the need for a conventional shock-absorbing plate (expansion), which is placed in the gap between the seismic isolation floor located on the surface and the fixed floor, which is the other part, and covers the gap so that it becomes a dangerous place. The present invention relates to a seismic isolation floor that is configured to be able to fully exhibit seismic isolation performance while ensuring a sufficient installation area of the seismic floor.

In recent years, for example, in office buildings, factories, museums, etc., certain rooms have been constructed as seismic isolation floors, and the seismic isolation objects such as computer systems, precision machines, and art works are placed on the seismic isolation floor, resulting in damage caused by earthquake motion. Try to prevent.
In conventional seismic isolation floors, seismic isolation bearings are placed and fixed on the floor slab of the building frame after adjusting the surface with mortar (ground treatment). Then, the support leg of the access floor is arranged on the seismic isolation bearing body directly or through a beam, and the level of the support leg is adjusted to install the access floor panel.
That is, in the conventional seismic isolation floor, at least two level adjustments of the unevenness adjustment and the access floor support leg are necessary.
During the earthquake, the height of the top surface of the seismic isolation floor (the top surface on which the seismic isolation support is placed) and the height of the fixed floor (the floor placed on the floor slab by the level-adjusted support legs) are almost the same position. In order to avoid the contact between the fixed floor and the base isolation floor due to the movement of the fixed floor, it is necessary to provide a gap larger than the moving stroke on the entire circumference between the base isolation floor and the fixed floor. And in order to block the said clearance gap, it was indispensable to install a buffer board (expansion) in the perimeter of a seismic isolation support body. The problems of the conventional seismic isolation floor structure are as described below.

  An example of a conventional seismic isolation floor having such a purpose will be described with reference to FIGS.

  The conventional seismic isolation floor 100 is on the slab 102 of the base isolation floor installation room 101 in a range excluding the square base isolation floor installation area 104 from the peripheral area in the base isolation floor installation room 101 to the central area, for example. A fixed floor 103 is installed.

  In addition, in the seismic isolation floor installation region 104 surrounded on all sides by the fixed floor 103, seismic isolation units 114 including a required number of seismic isolation devices 110 including a lower base 111, a base isolation element 112, and an upper base 113 are provided at predetermined intervals. The relay frames 115 are arranged flatly and vertically on each of the upper bases 113 of the seismic isolation unit 114. Further, the required number of height-adjustable columns 116 are erected on the frame 115, and the columns 116 are The flat plate 117 is disposed flatly, and the installation surface forming body 119 is configured by laying the rug material 118 on the flat plate 117, and the seismic isolation object 121 is placed on the installation surface forming body 119 so as to prevent damage due to earthquake motion. It is configured.

  The fixed floor 103 is horizontally supported by a height-adjustable support column 120 supported upright by a slab 102.

  The installation surface forming body 119 of the base isolation floor 100 and the height of the fixed floor 103 from the slab 102 are configured to be substantially the same.

  Furthermore, in the conventional base-isolated floor 100, in order to secure the maximum movement displacement amount due to the ground motion of each of the upper bases 113, and hence the flat plate 117 in the base-isolated floor 100, the installation surface forming body 119 of the base-isolated floor 100 is provided. A predetermined gap G is formed between each outer peripheral edge and the inner peripheral edge of the fixed floor 103.

  In order to avoid the danger due to the gap G, the gap G is shielded from the upper surface of the fixed floor 103 and is in a range of contact with the outer peripheral edge of the installation surface forming body 119 of the seismic isolation floor 100, for example. A buffer plate (expansion) 122 made of a steel plate or the like is disposed, and an area of the buffer plate 122 is clearly recognized by an operator or the like as a boundary region between the fixed floor 103 and the seismic isolation floor 100.

  As shown in FIG. 12, the buffer plates 122 are respectively disposed on four sides of the base isolation floor 100.

  However, the conventional seismic isolation floor 100 described above includes the following problems.

(1) Conventionally, the buffer plate 122, which is an essential structure when various types of seismic isolation devices are installed, is installed on the fixed floor 103, covers the gap G, and the installation surface forming body 119 Since it extends so as to contact the outer peripheral edge, sliding friction occurs between the buffer plate 122 and the upper surface of the fixed floor 103 along with the horizontal displacement of the installation surface forming body 119 when an earthquake occurs, The frictional resistance adversely affects the seismic isolation performance of the base isolation floor 100.

(2) Since the buffer plate 122 is installed on the fixed floor 103, it is necessary to make it thin in order to reduce a step for preventing walking obstacles. There is also a risk of hurting.

(3) A gap G larger than the maximum displacement of the installation surface forming body 119 is required between the seismic isolation floor 100 and the fixed floor 103, and although the buffer plate 122 is disposed, this region tends to be a dangerous place.

(4) The buffer plate 122 needs to be at least twice as wide as the maximum movement displacement of the installation surface forming body 119. Therefore, the effective plane area of the base isolation floor 100 in the base isolation floor installation chamber 101 is narrow. In addition to incurring a decrease, the boundary area (no entry zone) increases when an earthquake occurs.

(5) The buffer plate 122 needs to be as thin as possible, and since the reinforcing member cannot be installed, the buffer plate 122 is likely to be in a deformed state, and it is difficult to provide a planar level between the buffer plates 122.

(6) Since the buffer plate 122 is installed all around the seismic isolation floor 100, it takes a lot of construction time, resulting in a high installation cost as a whole. Furthermore, the processing of the four corners of each buffer plate 122 is not easy.

  Patent Document 1 discloses a structure in which a seismic isolation floor cover is disposed so as to close a gap between a fixed floor and a seismic isolation floor, and the seismic isolation floor cover is provided with two first plate-like members, The second plate-shaped member, a first shield using two spring steel plates, and a second shield using two spring steel plates, the first plate-shaped member being interposed via the first shield. And the second plate-like member is arranged on both the first plate-like members, the both sides of the second plate-like member and both the first plate-like members. An invention having a configuration in which a second shield is provided between each plate member is disclosed.

  However, in the case of this seismic isolation floor cover, it is assumed that a clearance is provided for ensuring the maximum displacement of the seismic isolation floor. It includes the problem of reducing the area.

Japanese Patent Laid-Open No. 10-110524

The problem to be solved by the present invention is that the seismic isolation floor itself in which the seismic isolation base with a built-in horizontal movement device etc. is installed in the building can be fully utilized. The installation area of the seismic floor can be secured sufficiently, no buffer plate is required to cover the gap that becomes a dangerous place like the conventional seismic isolation floor, and the fixed floor is not damaged, shortening the construction time and manufacturing There is no conventional seismic isolation floor that can realize cost reduction.
In other words, the problem to be solved by the present invention is that a buffer plate (expansion), which is an essential structure when various types of seismic isolation devices are installed as in the prior art, that is, located on the installation surface of the seismic isolation device. The seismic isolation floor can be installed without the need for a conventional shock-absorbing plate (expansion) that is placed in the clearance between the seismic isolation floor and the fixed floor. Conventionally, there is no seismic isolation floor configured so that the seismic isolation performance can be more fully exhibited while ensuring a sufficient area.

The present invention is based on the conventional seismic isolation floor without the buffer plate (expansion), which is an essential structure when various seismic isolation devices are installed, or the seismic isolation floor structure around the upper base. It can be called a seismic device, and is an improved structure of a seismic isolation floor where seismic isolation bearings that move horizontally in the event of an earthquake are placed in the building, with the upper surface adjusted to the same height and the lower surface adjusted to the building frame A support leg having a level adjustment member fixed at a predetermined position of the floor slab, and an upper surface of the support leg adjusted by the level adjustment member, and having an upper frame and a lower frame, between the frames. The seismic isolation bearing with a built-in horizontal movement device at the time of an earthquake, and the entire peripheral edge of the base frame of the base frame formed on the upper surface of a predetermined number of support legs level-adjusted to the same height To form and place a fixed floor; The fixed floor is in close contact with or close to the entire peripheral edge of the frame of the base frame for the base isolation frame, and the height of the fixed floor does not hinder the movement of the base isolation frame during an earthquake. The seismic isolation floor is characterized in that the upper frame and the fixed floor are provided with a step which is allowed within the range.
In other words, the seismic isolation floor of the present invention has a support leg with a level adjusting member arranged at a predetermined position on the floor slab, the lower surface of the support leg is fixed on the floor slab, and the upper surface of the support leg is the same. Adjust to the level height of and fix it to the bottom of the fixed floor.
And, between the upper frame and the lower frame, place a base-isolated support body with a built-in horizontal movement device in the event of an earthquake, and install the lower surface of the base frame of the base-isolated base body on the upper surface of the support legs that have been level adjusted. Fix it. The height of the fixed floor is set to a height that does not hinder the movement of the base frame of the base isolation frame during an earthquake.
The number of support legs and the height of the fixed floor can be freely selected according to the load mounted on the base frame surface of the seismic isolation bearing, that is, the base isolation floor.
According to such a seismic isolation floor of the present invention, the level adjustment of the support leg can be performed only once instead of twice as in the prior art, so that construction work can be saved, and the seismic isolation bearing Since the edge of the fixed floor can be brought into close contact with or close to the entire periphery of the lower frame, the openings of the base isolation floor and the fixed floor can be eliminated as in the conventional case.
That is, according to the seismic isolation floor of the present invention, a slight step can be formed between the upper surface of the seismic isolation bearing body (the upper surface of the upper frame) and the upper surface of the fixed floor, so that an opening is formed between the seismic isolation floor and the fixed floor. Because there is no longer the need for the conventional shock-absorbing plates (expansion), there is no need for dangerous entry spaces and the seismic isolation floor area can be increased in the event of an earthquake. Since the upper surface (the upper surface of the upper frame) can be used as an access floor, it is not necessary to construct a separate access floor, and a thin seismic isolation floor can be formed.
Furthermore, according to the seismic isolation floor of the present invention, the space between the undercarriage frame formed by the support legs and the floor slab and / or the space between the fixed floor and the floor slab can be used for various wiring, air conditioning, and the like. Further, the upper frame is composed of a protruding piece fixed to the peripheral side surface of the upper frame in a state of protruding outward on the peripheral side surface thereof and a vertical piece hanging from the tip thereof. A projecting piece is formed slightly longer than the moving stroke range that does not hinder the movement of the seismic support body during an earthquake, and the tip of the vertical piece has a cover body arranged in a non-contact state with the upper surface of the fixed floor. Therefore, with this cover, it is possible to protect the interior of the seismic isolation bearing body that may be exposed during an earthquake.
In the illustrated embodiment, an example in which a plurality of seismic isolation bearings are arranged is shown. However, in the present invention, the number of seismic isolation bearings is not limited. Of course, the present invention can be widely applied to those using a plurality of four or more.

  According to the first and second aspects of the present invention, the level adjustment of the support leg can be performed only once instead of twice as in the prior art, so that construction work can be saved and the seismic isolation bearing Since the edge of the fixed floor can be brought into close contact with or close to the entire circumference of the gantry frame, the opening of the seismic isolation floor and the fixed floor can be eliminated as in the prior art, so a buffer plate that covers the gap becomes unnecessary. Since there is no member that interferes with the seismic isolation performance of the seismic isolation floor itself, the seismic isolation performance can be fully demonstrated and the installation area can be secured wide enough to eliminate gaps. Since the structure of the seismic isolation floor is a simple configuration, it is possible to realize and provide a seismic isolation floor that can reduce the construction time and the installation cost.

  According to the third aspect of the invention, the same effect as that of the first or second aspect is exhibited, and the space between the lower frame and the floor slab formed by the support legs and / or the fixed floor. The space between the floor and the floor slab can be realized and provided as a seismic isolation floor that can be used for various types of wiring and air conditioning.

  According to the invention of claim 4, while exhibiting the same effect as the invention of any one of claims 1 to 3, it protrudes from a moving stroke range that does not hinder the movement of the seismic isolation bearing during an earthquake. Since the cover is formed with a piece slightly longer and the tip of the vertical piece is not in contact with the upper surface of the fixed floor, the seismic isolation bearing that may be exposed during an earthquake with this cover A seismic isolation floor that can protect the inside of the body can be realized and provided.

  According to the fifth aspect of the present invention, the seismic isolation floor capable of achieving the same effect as the fourth aspect of the invention and protecting the fixed floor by the elastic member provided at the tip of the vertical piece of the cover body is provided and provided. can do.

FIG. 1 is a partially enlarged schematic cross-sectional view showing a main part constituting the seismic isolation floor according to the present embodiment. FIG. 2 is a schematic front view of a fixed floor and a seismic isolation floor installed in a seismic isolation floor installation room according to the present embodiment. FIG. 3 is a schematic plan view showing a fixed floor and a seismic isolation floor installed in a seismic isolation floor installation room according to an embodiment of the present invention. FIG. 4 is an arrangement structure diagram showing an arrangement state of the fixed floor and the seismic isolation floor installed in the seismic isolation floor installation room according to the present embodiment. FIG. 5 is a partially enlarged schematic cross-sectional view in the case where the cover body constituting the seismic isolation floor according to the present embodiment is provided. FIG. 6 is a partially enlarged schematic cross-sectional view showing a cover body of Modification 1 constituting the seismic isolation floor according to the present embodiment. FIG. 7 is a partially enlarged schematic cross-sectional view showing a cover body of Modification 2 that constitutes the seismic isolation floor according to the present embodiment. FIG. 8 is a partially enlarged schematic cross-sectional view showing a cover body of Modification 3 that constitutes the seismic isolation floor according to the present embodiment. FIG. 9 is a schematic plan view of the seismic isolation device constituting the seismic isolation floor according to the present embodiment. 10 is a schematic cross-sectional view taken along line AA of FIG. 4 in FIG. 11 is a schematic cross-sectional view taken along the line BB of FIG. FIG. 12 is a schematic plan view showing a fixed floor and a base isolation floor installed in a conventional base isolation floor installation room or the like. FIG. 13 is a schematic cross-sectional view showing a conventional fixed floor, seismic isolation floor, and buffer plate.

  The present invention can fully exhibit the seismic isolation performance of the seismic isolation floor itself in the seismic isolation floor installation room, etc., and can secure sufficient seismic isolation floor installation area. The upper surface is the same for the purpose of providing a seismic isolation floor that does not require a cushioning plate to cover the gap, and that does not damage the fixed floor, shortens construction time and reduces manufacturing costs. A leveling member that is level-adjusted and has a lower surface fixed to a predetermined position on the floor slab of the building frame, and a base frame and a lower frame that are fixed to the upper surface of the level-adjusted supporting leg. A seismic isolation bearing body having a frame and a built-in horizontal movement device at the time of the earthquake between the frames, and an upper surface of a predetermined number of support legs adjusted in level to the same height. Formed and arranged on the entire peripheral edge of the undercarriage frame A fixed floor, and the fixed floor is brought into close contact with or close to the entire peripheral edge of the frame of the base frame of the base isolation frame, and the height of the fixed floor is set at the time of the earthquake of the base isolation frame This was realized by a base-isolated floor structure characterized in that it was placed within a range that does not impede movement, and the upper frame and the fixed floor were provided with steps that were allowed within the range.

  Hereinafter, a seismic isolation floor according to an embodiment of the present invention will be described in detail with reference to FIGS.

  As shown in FIGS. 2 to 4, the seismic isolation floor 1 according to the present embodiment is surrounded by the fixed floor 2 installed in the peripheral floor area, for example, in the central floor area in the seismic isolation floor installation room 101. It is arranged to be.

  On the front fixed floor 2, a rug material 2a made of a flat plate material having a tile material or carpets laid on the upper surface is arranged.

  That is, the seismic isolation floor 1 of the illustrated embodiment has a quadrangular seismic isolation device 4a and a connecting unit 3 in a region surrounded by an inner peripheral edge formed in the fixed floor 2 in a square opening state. It is configured by arranging.

  The seismic isolation floor 1 according to the embodiment has the level adjustment with the support leg 7 including the level adjustment member 2b in which the upper surface is level-adjusted and the lower surface is fixed at a predetermined position of the floor slab 2c of the building frame. A base-isolated support 4 fixed to the upper surface of the support leg 7 level-adjusted by the member 2b, having an upper frame 6 and a lower frame 5 and having an earthquake horizontal movement device or the like between the frames; A fixed floor 2 that is formed on the upper surface of a predetermined number of support legs 7 that are level-adjusted to the same height, and is formed and arranged on the entire peripheral edge of the frame 5 of the base frame 5; The fixed floor 2 is brought into close contact with or close to the entire peripheral edge of the frame 5 of the base frame 5 and the height of the fixed floor 2 is moved during the earthquake. It is placed within a range that does not obstruct, and the upper frame 6 and the fixed floor 2 Characterized in that a step difference permitted in the inner.

As described above, the illustrated embodiment shows an example in which a plurality of seismic isolation bearings 4 are arranged. However, in the present invention, the number of seismic isolation bearings 4 is not limited, and the seismic isolation bearings concerned are not limited. It goes without saying that the number of arrangements of the bodies 4 can be widely applied to those using four or more.
That is, the seismic isolation floor 1 of the illustrated embodiment has a quadrangular seismic isolation device 4a and a connecting unit 3 in a region surrounded by an inner peripheral edge formed in the fixed floor 2 in a square opening state. It is configured by arranging.

Each seismic isolation device 4a constituting the connecting unit 3 is not particularly limited as long as it is a mechanism or device that moves horizontally during an earthquake, but in the illustrated example, for example, the seismic isolation devices shown in FIGS. The seismic isolation bearing body 4 is constituted by the connecting unit 3 which includes the device 4a and is constituted by each of the seismic isolation devices 4a.
The seismic isolation bearing body 4 of the present embodiment is fixed to the upper surface of the support leg 7 whose level is adjusted by the level adjusting member 2b, and moves horizontally between the upper frame 6 and the lower frame 5 during an earthquake. A seismic isolation device 4a is incorporated.

  In other words, the seismic isolation device 4a of the illustrated embodiment includes a lower base 10, a base isolation element, and an upper base 11, and is arranged in rows and columns (XX direction, YY direction) at predetermined intervals, as a whole. The detailed structure of, for example, nine units arranged in a square shape includes a seismic isolation device 4a described later.

  Then, the lower bases 10 in the nine seismic isolation devices 4a are integrated by the lower base frame 5, and the upper bases 11 in the nine seismic isolation devices 4a are integrated by the upper base frame 6, respectively. The seismic device 4a is configured so as to exhibit seismic isolation performance in the XX direction or the YY direction in conjunction with each other.

  Further, as shown in FIG. 4, the fixed floor 2 and the seismic isolation device 4a are arranged upright from the floor slab 2c of the seismic isolation floor installation chamber 101 and level-adjusted by the level adjusting member 2b, so that the required number of support legs are provided. 7, and the outer peripheral edge of the gantry frame 5 is disposed in close contact with or close to the inner peripheral edge of the fixed floor 2.

  The seismic isolation floor 1 according to the present embodiment includes an upper frame 6 that is positioned higher than the fixed floor 2 in the seismic isolation device 4a and a rug material 8 made of a flat plate material in which tile materials or carpets are laid on the upper surface. And formed flat.

And the seismic isolation object 52 is installed on the said seismic isolation floor 1, and it is comprised so that the seismic isolation function with respect to the said seismic isolation object 52 may be exhibited by the operation | movement which each said seismic isolation apparatus 4a interlock | cooperated.
In the seismic isolation floor 1 according to the present embodiment, a cover body 62a may be protruded from the outer peripheral edge of the four sides of the upper frame 6 to the fixed floor 2 side.

  For example, as shown in FIG. 5, the cover body 62 a includes an L-shaped projecting body 15 having a vertical piece 13 and a projecting piece 14 integrally formed of a steel plate or an aluminum plate, and a projecting end portion of the projecting piece 14. And an elastic member 62 made of, for example, an elastic rubber material in a non-contact state with the upper surface of the covering material 8 on the upper surface of the fixed floor 2 that is covered. Whether the elastic member 62 is provided or not can be selected freely.

  Next, a specific configuration example of the illustrated seismic isolation device 4a constituting the seismic isolation bearing 4 will be described with reference to FIGS.

  As described above, the seismic isolation bearing 4 in the present invention is not limited to the illustrated example as long as it has a mechanism that moves horizontally during an earthquake.

  As shown in FIGS. 9 to 11, the seismic isolation device 4a includes a pair of lower rails 10a and 10a arranged in parallel so that the central part of the rail surface is the lowest part and both sides thereof are symmetrically inclined ascending surfaces. In addition, for example, a planer base 10 having a square shape in plan view and a pair of upper rails in which the central portion of the rail surface is the highest portion and both sides thereof are symmetrically inclined downward inclined surfaces. 12 and 12 are arranged in parallel and projecting downward and perpendicular to the pair of lower rails 10a and 10a, and are arranged above the lower frame 10 so as to be opposed to the lower frame 10, for example, in a square shape in plan view And the pair of lower rails 10a and 10a and the pair of upper rails 12 and 12 between the upper base 11 for storing the seismic isolation object 52 and the lower base 10 and the upper base 11 that are opposed to each other. Surrounding space area It has a roller support shaft frame 21, the disposed.

  The following description will be made assuming that the direction in which the lower rail 10a is disposed is the XX direction and the direction in which the upper rail 12 is disposed is the YY direction.

  The roller support shaft frame body 21 is one side which is in rolling contact with the rail surface of each of the lower rails 10a and 10a on the outside of two parallel pieces 21a and 21b of the support shaft frame body 20 along the pair of lower rails 10a and 10a. A total of six roller groups, three in total, are pivotally supported, and on the rail surfaces of the upper rails 12 and 12 outside the two other pieces 21c and 21d along the pair of upper rails 12 and 12, respectively. A group of 6 colas in total, 3 on each side in rolling contact, are rotatably supported.

  The support shaft frame body 20 is formed in, for example, a square shape in a plan view while exhibiting a square shape in a plan view.

  The structure of the roller support shaft frame 21 and each roller group will be further described in detail.

  The roller support shaft frame body 21 has a support shaft frame body 20, and both ends of the support shaft frame body 20 at predetermined intervals in a direction perpendicular to the lower rails 10 a and 10 a in the support shaft frame body 20. Three roller support shafts 31a, 31b, 31c having threaded portions are arranged, and one end side of each of the three roller support shafts 31a, 31b, 31c penetrates the piece 21a and protrudes outward. Moreover, the other end side penetrates the piece 21b and protrudes outward.

  The three roller support shaft bodies 31a, 31b, 31c are arranged as follows. The roller support shaft body 31a is disposed at the center position, and the roller support shaft bodies 31b, 31c are disposed on both sides of the roller support shaft body 31a. Give an explanation.

  And in each roller support shaft body 31a, 31b, 31c, the part projected to the outside of the piece 21a, piece 21b, for example, as shown in FIG. 5, each roller 32a, via bearings 33a, 33b, 33c, 32b and 32c are rotatably supported in a structure of 3 pieces on each side for a total of 6 pieces.

  The central rollers 32a and 32a supported by the central roller support shaft body 31a are provided with flanges 32a1 and 32a1 arranged on the side of the pieces 21a and 21b, and are connected to the lower rail 10a. It ensures the running stability and anti-rolling function by contact.

  Furthermore, each roller support shaft body 31a, 31b, 31c penetrates each roller 32a, 32b, 32c and protrudes further outward, and a spacing plate 34 is fitted to these protruding portions, Nuts 36 are screwed onto the protruding end sides of the roller support shaft bodies 31a, 31b, and 31c with the washers 35 interposed therebetween to integrally hold the protruding ends of the roller support shaft bodies 31a, 31b, and 31c. Each roller support shaft body 31a, 31b, 31c is configured to be fixed.

  Further, the roller support shaft frame 21 includes three roller support shafts 41a having screw portions at both ends at predetermined intervals in the roller support shaft frame 21 along the direction of the lower rails 10a and 10a. 41b, 41c, and one end side of each of the three roller support shafts 41a, 41b, 41c passes through the piece 21c and protrudes outward, and the other end side passes through the piece 21d. Protruding outward.

  The three roller support shaft bodies 41a, 41b, 41c are arranged as follows. The roller support shaft body 41a is disposed at the center position, and the roller support shaft bodies 41b, 41c are disposed on both sides of the roller support shaft body 41a. Give an explanation.

  The roller support shaft bodies 41a, 41b, and 41c are respectively provided with three rollers 42a, 42b, and 42c on one side through bearings 43a, 43b, and 43c, respectively, at the portions protruding to the outside of the pieces 21c and 21d. It is pivotally supported in a 6-piece configuration.

  The central rollers 42a and 42a supported by the central roller support shaft body 41a are provided with flanges 42a1 and 42a1 in an arrangement located on the side of the pieces 21c and 21d. The running stability and rolling prevention function by rolling contact are ensured.

  Further, each of the roller support shaft bodies 41a, 41b, 41c passes through each of the rollers 42a, 42b, 42c and further protrudes outward. As in the case described above, the spacing holding plate 44 is provided on these protruding portions. The nuts 46 are screwed onto the protruding end sides of the roller support shaft bodies 41a, 41b, and 41c with the washers 45 interposed therebetween, so that the protruding ends of the roller support shaft bodies 41a, 41b, and 41c are inserted. The roller support shaft bodies 41a, 41b, 41c are fixedly held together.

  In the roller support shaft frame 21 described above, the roller support shaft bodies 31a, 31b, 31c and the three roller support shaft bodies 41a, 41b, 41c are arranged in such a manner that the roller support shaft bodies 31a, 31b, 31c are in the upper stage. The support shafts 41a, 41b, and 41c are arranged at the lower stage, so that the lower rail 10a is within a range in which mutual interference is not caused when the lower rail 10a and the upper rail 12 are moved relative to each other. Each of the rollers 42a, 42b, and 42c having the rotation direction along the upper rail 12 by bringing the shaft support position of the rollers 32a, 32b, and 32c having the rotation direction along the roller support shaft frame 21 closer to the upper frame 11 side. The shaft support position by the roller support shaft frame 21 is moved closer to the lower platform 10 side, and the distance between the lower platform 10 and the upper platform 11 is set. Small and realizes a thinner as a whole isolator 4a.

  The roller 42a has a flange 42a1.

  Furthermore, as for the roller diameters of the rollers 32a, 32b, 32c, as shown in FIG. 5, the roller diameter of the central roller 32a is large, the roller diameters of the rollers 32b, 32c on both sides thereof are the same, and The diameter is smaller than that of the roller 32a.

The roller diameters of the rollers 42a, 42b, and 42c are the same as those of the rollers 32a, 32b, and 32c as shown in FIG.
The pair of lower rails 10a and 10a, the pair of upper rails 12 and 12, and the roller support shaft frame 21 that supports the roller groups constitute a roller rolling type seismic isolation element in the seismic isolation device 4a. doing.

According to the seismic isolation floor 1 provided with the cover body 62a according to the present embodiment described above, the following effects can be obtained.
It should be noted that whether or not the seismic isolation bearing body 4, that is, the seismic isolation device 4 a includes the cover body 62 a, is free, and the presence or absence of the cover body 62 a is not essential in the present invention.

  In the seismic isolation floor installation room 101 and the like, there is no gap G in the peripheral portion like the conventional seismic isolation floor. Therefore, conventionally, when various seismic isolation devices are installed, The shock absorber (expansion), which was an essential structure, is no longer necessary, and there are no members that interfere with the seismic isolation performance of the seismic isolation floor 1 itself. The installation area of the seismic isolation floor 1 in the seismic floor installation room 101 can be secured sufficiently wide so that there is no gap G, and a dangerous area as in the conventional example can be eliminated.

  Further, since the buffer plate as in the conventional example is not required, there is no possibility of damaging the upper surface of the fixed floor 2, and the entry prohibition zone can be eliminated.

  Moreover, according to the seismic isolation floor 1 provided with the cover body 62a which concerns on a present Example, the L-shaped protrusion 15 which has the vertical piece 13 and the protrusion piece 14 which were integrally comprised by the steel plate or the aluminum plate, etc., and the said protrusion piece 14 is provided with a simple structure including an elastic member 62 made of, for example, an elastic rubber material in a non-contact state with the upper surface of the fixed floor 2 covered on the protruding end portion 14, and the cover body 62 a is protruded in four directions of the installation surface. Therefore, the construction time can be shortened and the installation cost can be reduced.

  Next, a modified example of the cover body 62a will be described with reference to FIGS.

  The cover body 62a shown in FIG. 5 is as described above.

(Modification 1)
As shown in FIG. 6, the cover body 62 b according to Modification 1 includes a projecting body 63 that is integrally formed of a steel plate, an aluminum plate, or the like, and an elastic member 62.

  The projecting body 63 has a base end portion 64 fixed to the outer end surface portion of the upper frame 6 constituting the installation surface forming body 9 by using a fastener such as a bolt or a nut, and from the lower end of the base end portion 64. The protruding piece 65 is protruded in a state where the height from the fixed floor 2 is relatively small toward the upper side of the fixed floor 2, and the vertical piece 66 is suspended downward from the protruding end of the protruding piece 65. It is configured by.

  The protruding end of the vertical piece 66 is covered with an elastic member 62 made of, for example, an elastic rubber material in a non-contact state with the rug 2a on the upper surface of the fixed floor 2. Whether the elastic member 62 is provided or not can be selected freely.

  The cover body 62b is configured to protrude from the four sides of the installation surface toward the upper surface of the fixed floor 2 respectively.

  According to the seismic isolation floor 1 including the cover body 62b according to the first modification, the cover body 62b protrudes from the four sides of the installation surface toward the upper surface of the fixed floor 2, and the vertical piece 66 Since each of the elastic members 62 covered on the projecting end portion is provided in a non-contact state with the rug 2a on the upper surface of the fixed floor 2, substantially the same effect as in the case of the seismic isolation floor 1 of the above embodiment. Demonstrate.

  At the same time, by the cover body 62b having a relatively small height from the fixed floor 2, the boundary areas of the four sides of the base isolation floor 1 can be clearly recognized by an operator or the like.

(Modification 2)
As shown in FIG. 7, the cover body 62 c according to the modification 2 uses an L-shaped auxiliary material 72 at the upper part of the outer end surface portion of the upper frame 6 constituting the installation surface, as compared with the case of the modification 1. The base end side of the protruding piece 73 is fixed in a high position, the other end side of the protruding piece 73 protrudes upward from the fixed floor 2, and the protruding piece 73 vertically extends downward from the protruding end of the protruding piece 73. A downward L-shaped projecting body 71 in which the piece 74 is suspended, and an elastic member 62 covering the projecting end of the vertical piece 74 of the projecting body 71 in a non-contact manner on the rug 2a on the fixed floor 2. And. Whether the elastic member 62 is provided or not can be selected freely.

  The height of the protruding piece 73 in the cover body 62c according to the modified example 2 is set to be approximately equal to the height of the upper surface of the upper frame 6.

  The protruding piece 73 and the vertical piece 74 are integrally formed of a steel plate, an aluminum plate, or the like, and the L-shaped auxiliary material 72 is fixed to the outer end surface portion of the upper frame 6 using a fastening tool such as a bolt or a nut. ing.

  Further, the base end side of the protruding piece 73 is fixed to the L-shaped auxiliary material 72 by the fastening tool or welding.

  The cover body 62c is configured to protrude from the four sides of the installation surface forming body 9 toward the rug material 2a of the fixed floor 2 respectively.

  According to the seismic isolation floor 1 provided with the cover body 62c according to the modified example 2, while exhibiting substantially the same effect as the case of the seismic isolated floor 1 of the above embodiment, the height from the fixed floor 2 is a modified example. With the cover body 62c positioned higher than the case 1, the boundary areas of the four sides of the seismic isolation floor 1 can be clearly recognized by an operator or the like as in the first modification.

(Modification 3)
As shown in FIG. 8, the cover body 62d according to the modified example 3 is contoured to the upper frame frame 6 by using an L-shaped auxiliary material 82 on the outer end surface portion of the upper frame 6 constituting the installation surface. The projecting piece 83 is fixed in this state, and a downward L-shaped projecting body 81 comprising a vertical piece 83 suspended from the end of the projecting piece 83 toward the upper side of the rug material 2a of the fixed floor 2; The protruding end of the vertical piece 83 is provided with an elastic member 62 that is covered with the rug 2a of the fixed floor 2 in a non-contact state. Whether the elastic member 62 is provided or not can be selected freely.

  The projecting dimension from the outer end surface portion of the upper frame 6 of the projecting piece 83 is set to be smaller than that of the cover body 62c according to the second modification.

  The protruding piece 83 and the vertical piece 84 are integrally formed of a steel plate, an aluminum plate or the like, and the L-type auxiliary material 82 is fixed to the outer end surface portion of the upper frame 6 using a fastening tool such as a bolt or a nut. ing.

  Further, the protruding piece 83 is fixed to the L-type auxiliary material 82 by the fastening tool or welding.

  The cover body 62d is configured to protrude from the four sides of the installation surface forming body 9 toward the covering material 2a of the fixed floor 2 respectively.

  According to the seismic isolation floor 1 provided with the cover body 62d according to the modified example 3, based on the configuration including the elastic member 62 in a non-contact state with the rug material 2a, substantially the same effect as that of the above-described embodiment is obtained. Demonstrate.

  The present invention can be applied to a wide range of applications for seismic isolation of machines, equipment, precision instruments, fine arts, antiques, etc. in office buildings, factories, art galleries, museums and the like.

DESCRIPTION OF SYMBOLS 1 Seismic isolation floor 2 Fixed floor 2a Rug material 2b Level adjustment member 2c Floor slab 3 Connection unit 4 Seismic isolation support body 4a Seismic isolation device 5 Lower frame 6 Upper frame 7 Support leg 8 Rug material 9 Installation surface formation body 10 Lower Base 10a part rail 11 Upper base 12 Upper rail 13 Vertical piece 14 Projection piece 15 Projection body 20 Support shaft frame main body 21 Roller support shaft frame body 21a Piece 21b Piece 21c Piece 21c Piece 21d Piece 31a Roller support shaft body 31b Roller support shaft body 31c Roller support shaft body 32a Roller 32b Roller 32c Roller 32a1 Flange 33a Bearing 33b Bearing 33c Bearing 34 Spacing plate 35 Washer 36 Nut 41a Roller support shaft body 41b Roller support shaft body 41c Roller support shaft body 42a Roller 42a1 Flange 42b Roller 42c roller 43a bearing,
43b Bearing 43c Bearing 44 Spacing plate 45 Washer 46 Nut 52 Seismic isolation object 62 Elastic member 62a Cover body 62b Cover body 62c Cover body 62d Cover body 63 Projection body 64 Base end portion 65 Projection piece 66 Vertical piece 71 Projection body 72 L Type auxiliary material 73 Protruding piece 74 Vertical piece 81 Protruding body 82 L type auxiliary material 83 Vertical piece 83 Protruding piece 84 Vertical piece 91 Protruding body 92 V type auxiliary material 93 Inclined piece 101 Seismic isolation floor installation chamber 102 Slab G Gap

Claims (5)

An improved structure of a seismic isolation floor in which a seismic isolation base that moves horizontally in the event of an earthquake
A support leg having a level adjustment member that adjusts the level of the upper surface to the same height and fixes the lower surface to a predetermined position of the floor slab of the building frame;
A base-isolated support that is fixed to the upper surface of the support leg that has been level-adjusted by the level-adjusting member, includes an upper frame and a lower frame, and has a built-in horizontal movement device during an earthquake between the frames;
A fixed floor formed on the upper surface of the base frame of the base isolation frame formed and arranged on the upper surface of the predetermined number of support legs level-adjusted to the same height; and
Comprising
The fixed floor is brought into close contact with or close to the entire peripheral edge of the frame of the base frame of the base isolation bearing, and the height of the fixed floor is arranged within a range that does not hinder the movement of the base isolation base during an earthquake. A base-isolated floor characterized in that the upper frame and the fixed floor are provided with a step which is allowed within the range.   The seismic isolation floor according to claim 1, wherein the upper surface of the base frame of the base isolation support is configured as a seismic isolation floor.   The space between the undercarriage frame and the floor slab formed by the support legs and / or the space between the fixed floor and the floor slab is used for various wiring, air conditioning, and the like. 1 or 2 seismic isolation floor.   The upper frame is composed of a protruding piece fixed to the peripheral side surface of the upper frame in a state of projecting outward on the peripheral side surface thereof and a vertical piece suspended from the tip thereof at the time of the earthquake of the seismic isolation support body. It has a cover body in which the protruding piece is formed slightly longer than the movement stroke range that does not hinder the movement, and this cover protects the interior of the base-isolated support body that may be exposed during an earthquake. The seismic isolation floor according to any one of claims 1 to 3.   The seismic isolation floor according to claim 4, wherein an elastic member is provided at a tip of the vertical piece of the cover body.

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