JP5715920B2 - Free access floor mount, free access floor mount installation structure - Google Patents

Description

  The present invention is used for a free access floor and can be installed with equipment or the like on the upper part, suppresses amplification of vibration from the floor part, and does not transmit amplified vibration to equipment installed on the upper part. The present invention relates to a rigid base for a free access floor and the like.

  Conventionally, the floor panel which comprises a free access floor is arrange | positioned on a support body, and space is formed under a floor panel. The underfloor is used for arranging wiring and flowing air, and a light floor panel is used in consideration of workability and the like.

  However, when installing heavy objects such as equipment on the free access floor, a certain degree of strength is required for the floor panel and the support. In particular, manufacturing equipment such as a semiconductor substrate is vulnerable to vibration, and if the rigidity of the floor panel and the support is insufficient, the support or the like amplifies the vibration of the floor surface and transmits large vibration to the equipment.

  For this reason, when installing facilities that are heavy objects that do not like vibration, such as semiconductor substrate manufacturing equipment, on the free access floor, concrete is placed in advance at the installation location of the equipment, or an equipment installation section is provided, or a solid It is necessary to reinforce the steel structure. However, it is difficult to place and weld concrete in a clean room, and it is difficult to relocate or add equipment by changing the layout.

  As a floor panel in consideration of such strength, there is a panel for a free access floor provided on the back of a continuous concavo-convex shape (Patent Document 1).

  In addition, there is a free access floor in which border panel support legs and support beams are provided in the vicinity of the wall surface to increase the installation strength in the vicinity of the wall surface (Patent Document 2).

Japanese Patent Laid-Open No. 11-6276 JP-A-5-118120

  However, in the panel for the free access floor described in Patent Document 1, there is a limit to improving the strength of the panel itself, and it is necessary to improve the strength of the support that supports the panel. Is not taken into consideration, so there is a problem that there is a limit to the installation of heavy objects on the panel.

  In addition, the free access floor described in Patent Document 2 is an improvement in the strength of the support in the vicinity of the wall surface. For the method of improving the strength of the support in the center of the room, the lower part of the support is fixed. Only the effect of improving the bonding area between the plate and the floor is described, there is no description of a specific support structure for supporting a heavy object from the top and having high rigidity, and Patent Document 1 Similarly, there is a problem that there is a limit in installing heavy objects on the panel.

  For this reason, it is difficult for the panel and support described in Patent Document 1 and Patent Document 2 to secure sufficient strength for installing the equipment, and to amplify vibration from the floor surface. There is a problem that it is difficult to ensure such a high rigidity.

  In addition, in the conventional gantry, when assembling the frame and the base constituting the gantry, the work is performed in a narrow space, and thus the visibility of the mounting portion such as the bolt is poor. Moreover, if the work space for fixing each component and interference with bolts and the like are avoided, the height of the gantry becomes high, and it is difficult to cope with the gantry with a low height.

  The present invention has been made in view of such problems, and it is possible to install heavy equipment on the top without amplifying vibrations from the floor, which is easy to install and construct, An object of the present invention is to provide a floor for a free access floor and the like that can lower the height.

  In order to achieve the above-described object, the first invention includes a lower plate, a lower block provided at each of four corners on the lower plate, and a lower frame joined to the lower plate via the lower block. A support provided at each of the four corners on the lower frame, an upper frame joined to the lower frame via the support, an upper block joined to each of the four corners on the upper frame, and the upper block And an upper plate joined to the upper frame, and the lower block includes a lower plate joined portion joined to the lower plate and a lower frame joined portion joined to the lower frame. A step is provided between the lower plate joint and the lower frame joint, and a joining position when joining the lower block to the lower plate, and the lower block And joining position when joining the lower frame is a raised floor for rack, characterized in that does not overlap the.

  It is desirable that the height of the step is higher than the head height of the bolt used for joining to the lower plate.

  According to the first invention, the lower block is formed with the lower plate joint portion joined to the lower plate and the lower frame joint portion joined to the lower frame through the step. The joining position when joining the blocks does not overlap with the joining position when joining the lower frame to the lower block. For this reason, when attaching a lower frame, it is excellent in the visibility of the insertion hole of a joining bolt with a lower plate.

  In addition, since the lower frame is arranged at a position shifted from the top of the joint bolt with the lower plate, there is no need for a space for the bolt mounting space between the lower frame and the lower block, and the overall height of the gantry is reduced. can do.

  Moreover, since the level | step difference of a lower plate junction part and a lower frame junction part is higher than the head height of the volt | bolt used for joining with a lower plate, a bolt head does not interfere with a lower frame.

  A second invention uses the free access floor gantry according to the first invention, and a support material for supporting the free access floor panel is disposed at a portion other than the installation portion of the free access floor gantry, and the lower The free access floor pedestal installation structure is characterized in that the thickness of the plate is thicker than the thickness of the leg portion of the support member, and the lower frame joint portion of the lower block projects above the leg portion. .

  According to the second invention, since the thickness of the lower plate is thicker than the legs of the supporting material that supports the floor panel, the lower block does not interfere with the supporting material. In addition, notch portions are also formed on the lower surfaces of the four corners of the upper plate, and do not interfere with the upper portion of the support member. For this reason, the frame or support | pillar of a mount frame can be arrange | positioned outside the installation range of a mount frame. For this reason, high rigidity is securable.

  According to the present invention, it is possible to install heavy equipment on the top without amplifying vibrations from the floor, and it is easy to install and construct, and a free access floor that can reduce the overall height. A pedestal or the like can be provided.

The exploded perspective view which shows the mount frame 1. FIG. FIG. 3 is an assembled perspective view showing the gantry 1. The front view which shows the mount frame 1. FIG. It is a figure which shows the lower block 11, (a) is a perspective view, (b) is a top view, (c) is the sectional view on the AA line of (b). The attachment state of the lower block 11 is shown. The perspective view which shows the support | pillar 21. FIG. The fragmentary sectional view which shows the state which joined the board | plate member 33 to the support | pillar 21. FIG. It is a figure which shows the attachment state of upper block 45a, 45b, (a) is a top view, (b) is the BB sectional drawing of (a). The figure which shows the state which installed the mount frame 1. FIG. The front view which shows the mount frame 1a. The fragmentary sectional view which shows the state which joined the board | plate member 33 to the support | pillar 21 and an up-and-down frame.

  Hereinafter, the gantry 1 according to the embodiment of the present invention will be described. FIG. 1 is an exploded perspective view showing a gantry 1 according to the first embodiment, FIG. 2 is an assembled perspective view of the gantry 1, and FIG. 3 is a front view of the gantry 1.

  The gantry 1 mainly includes a lower plate 3, a lower block 11, a lower frame 15, a support column 21, a plate member 33, an upper frame 39, upper blocks 45a and 45b, an upper plate 53, and the like.

  The lower plate 3 is a part bonded to the floor when the gantry 1 is installed on the floor. The lower plate 3 is a plate member made of steel, for example, and is provided with notches 7 at portions corresponding to the four corners of the gantry 1. The notch portion 7 is for preventing interference with a support member for installing a floor panel for free access when the mount 1 is installed. That is, the gantry 1 can be installed without interfering with the legs of the existing support. The lower plate 3 is adjusted to be horizontal and installed on the floor.

  A hole 5 is formed in the lower plate 3. Lower blocks 11 are provided at portions corresponding to the notches 7 of the lower plate 3.

  4A and 4B are diagrams showing the lower block 11, in which FIG. 4A is a perspective view, FIG. 4B is a plan view, and FIG. 4C is a cross-sectional view taken along line AA in FIG. . The lower block 11 is provided with a lower frame joint 12a and a lower plate joint 12b. A step is formed between the lower frame joint 12a and the lower plate joint 12b. A hole 13a is formed in the lower frame joint 12a. A hole 13b is formed in the lower plate joint 12b.

  FIG. 5 is a partial plan view showing a state in which the lower block 11 is attached to the lower plate 3. Bolts 9 are inserted into the holes 13 b of the lower plate joint 12 b and fixed to the holes 5 of the lower plate 3. That is, the lower block 11 is fixed to the upper surface of the lower plate 3. At this time, in the cutout portion 7 of the lower plate 3, the lower portion of the lower block 11 is lifted upward from the floor surface by the thickness of the lower plate 3.

  In the cutout portion 7, the support leg portion 61 of the support for installing the above-described free access floor panel is disposed. The support leg 61 is thinner than the lower plate 3. Therefore, the lower block 11 is formed so as to protrude above the support leg 61, and interference between the lower block 11 and the support leg 61 is prevented.

  The height of the step between the lower frame joint 12a and the lower plate joint 12b is higher than the thickness of the head of the bolt 9. Therefore, in a state where the lower block 11 is fixed to the lower plate 3, the head of the bolt 9 does not protrude upward from the joint surface of the lower frame joint 12a.

  As shown in FIGS. 1 to 3, a lower frame 15 is provided on the upper surface of the lower block 11. The lower frame 15 is a steel rectangular plate-shaped member. The lower frame 15 is a connection portion with a support column 21 described later. Ribs 17 that are flat projections are formed on the upper surface side of the lower frame 15. The rib 17 is formed on each side of the substantially rectangular lower frame 15 and is formed at a position slightly shifted from the outer edge in the center direction.

  In addition, holes 19 are provided near the four corners of the lower frame 15. The hole 19 is formed at a position corresponding to the hole 13 a of the lower block 11. In addition, the hole 13a is formed outside the joint part (hole 13b) with the lower plate 3 of the lower block 11.

  Support columns 21 are provided in the vicinity of the four corners of the lower frame 15. FIG. 6 is a perspective view showing the column 21. Flange portions 27 a and 27 b are formed on the upper and lower ends of the column 21. A hole 29a is formed in the lower flange portion 27a. Further, a hole 29b is formed in the upper flange portion 27b. The hole 29 a is formed at a position corresponding to the hole 19 of the lower frame 15 and the hole 13 a of the lower block 11.

  Accordingly, the column 21 is fixed to the lower frame 15 and the lower block 11 by the bolts 31 penetrating the holes 29a, 19 and 13a. At this time, since the fixing position of the bolt 31 and the fixing position of the bolt 9 are shifted in a plane, the fixing work of the bolt 9 is easy when the lower frame 15 is attached. Further, since the respective fixing positions are shifted in the plane, it is not necessary to avoid interference between the bolts, and the fixing height of the lower frame 15 can be kept low.

  Ribs 23 are formed on the side surface of the column 21 in two directions along the axial direction of the column 21. The ribs 23 are formed substantially perpendicular to each other in the direction between the adjacent columns 21. A hole 25 is formed in the rib 23.

  A plate member 33 that is a reinforcing member is provided between the columns 21. FIG. 7 is a plan sectional view showing a state in which the plate member 33 is fixed to the column 21. A hole 35 is formed in the plate member 33. The hole 35 is formed in a portion corresponding to the hole 25 of the support column 21. The plate member 33 is fixed to the column 21 by a bolt 37 that penetrates the hole 35.

  That is, the ribs 23 of the adjacent struts 21 are formed on the same plane, and the plate member 33 is disposed so as to straddle the ribs 23 of the struts 21. Therefore, it is possible to bring the end of the plate member 33 close to the columns 21 formed at the four corners of the gantry 1. For this reason, the reinforcing effect by the plate member 33 is large, and high rigidity can be ensured.

  As shown in FIGS. 1 to 3, an upper frame 39 is provided on the upper surface of the flange portion 27 b at the top of the support column 21. The upper frame 39 has substantially the same configuration as that of the lower frame 15 and has a form in which the upper and lower surfaces are inverted. That is, a rib 41 that is a protrusion is formed on each side of the upper frame 39 downward.

  In the vicinity of the four corners of the upper surface of the upper frame 39, upper blocks 45a and 45b are provided so as to overlap each other. The upper blocks 45a and 45b are plate members having substantially the same shape.

  FIGS. 8A and 8B are diagrams showing an attachment state of the upper blocks 45a and 45b, FIG. 8A is a plan view, and FIG. 8B is a cross-sectional view taken along line BB in FIG. 8A.

  The upper upper block 45b is provided with holes 49a and 49b. Further, a hole 47 is provided in the lower upper block 45a. The hole 49a of the upper block 45b, the hole 47 of the upper block 45a, and the hole 43 of the upper frame 39 are provided at portions corresponding to each other, and the upper blocks 45a and 45b are fixed to the upper frame 39 by bolts 51. At this time, the diameter of the upper portion of the hole 49b of the upper block 45b is increased, and the head of the bolt 51 does not protrude from the upper surface of the upper block 45b.

  An upper plate 53 is provided on the upper block 45b. The upper plate 53 is a rectangular member made of aluminum, and is a part where equipment and the like are installed in the upper part. As the upper plate 53, a conventional floor panel can be used, and other materials may be used. The upper plate 53 is provided with a hole 55.

  The hole 55 is formed at a portion corresponding to the hole 49b of the upper block 45b, and the upper plate 53 is fixed to the upper block 45b by a bolt 57. The upper portion of the hole 55 has an enlarged diameter, and the head of the bolt 57 does not protrude from the upper surface of the upper plate 53.

  Here, since the upper blocks 45a and 45b have a flat plate shape, the upper blocks 45a and 45b and the upper plate 53 can be brought into surface contact. Here, being able to make surface contact means that, for example, substantially the entire upper surface of the flat upper block 45 b can be brought into contact with the lower surface of the upper plate 53.

  Note that the upper blocks 45a and 45b do not necessarily have to be double stacked. Moreover, you may provide a spacer in upper and lower part of the upper block 45a or the upper block 45b as needed. By providing the spacer, the horizontal fine adjustment of the upper plate 53 can be performed. Further, the horizontal fine adjustment of the upper plate 53 may be performed by slightly changing the thicknesses of the upper blocks 45a and 45b at the four corners. In addition, when providing a spacer separately, it is desirable to provide a spacer having substantially the same shape as the planar shape of the upper blocks 45a and 45b.

  In addition, cutouts are provided on the lower surfaces of the four corners of the upper plate 53. The notch is for preventing interference with the support for installing the adjacent free access floor panel. That is, the gantry 1 can be installed without interfering with the legs of the existing support.

  Next, the installation state of the gantry 1 will be described. FIG. 9 is a plan view showing a state in which the gantry 1 is installed at a position corresponding to the equipment installation site 65 on the floor on which a plurality of floor panels 63 are arranged. The upper surface of the gantry 1 is the same size as the floor panel 63. That is, the upper plate 53 is the same size as the floor panel 63.

  When the installation site 65 is determined on the free access floor, the floor panel 63 corresponding to the installation site 65 is removed, and the gantry 1 is installed instead. The gantry 1 may be used as a single unit depending on the size of the equipment installed in the upper part, or may be two units vertically and horizontally as shown in FIG. Depending on the size of the equipment and the equipment installation site 65, the number of installations of the gantry 1 can be determined as appropriate. For example, in order to obtain a wider range of equipment installation sites 65, the adjacent floor panel 63 may be replaced with the gantry 1. Adjacent gantry 1 are connected to each other.

  Usually, a support body is installed at a confluence portion of each corner of the floor panel 63, and the floor panel 63 is disposed on the support body. Since the gantry 1 has the notches 7 at the four corners of the lower plate 3 and a gap is formed at the lower part of the lower block 11, it does not interfere with the support leg 61 of the existing support. Further, the lower surfaces of the four corners of the upper plate 53 are also cut off at the corners and thus provided with notches so that they do not interfere with the support. For this reason, the gantry 1 can be installed in a state where the support is installed.

  Thus, according to the gantry 1 according to the present embodiment, since it has high rigidity (particularly horizontal rigidity), it does not amplify vibration from the floor. Even if a weak facility is installed, vibration from the floor is not amplified and transmitted.

  In addition, since the four corners of the lower plate 3 are notched, it does not interfere with the support legs 61 such as the existing support body, and the gantry 1 is replaced with the existing floor panel 63 when the equipment is moved or expanded. It is possible to install. In particular, since the gantry 1 is easy to assemble and disassemble each member, it can be easily installed on-site without performing welding work in a clean room or requiring special cranes or other equipment. Can be performed.

  Further, since the lower block 11 is formed so as to protrude above the notch portion 7 of the lower plate 3, the lower frame 15, the support column 21, and the like can be disposed in the vicinity of the four corners of the gantry 1. For this reason, higher rigidity can be obtained. In addition, a gap between the lower surface of the projecting portion of the lower block 11 and the floor is formed by the thickness of the lower plate 3. For this reason, it does not interfere with support leg parts 61, such as a support.

  The lower block 11 is provided with a lower frame joint 12a and a lower plate joint 12b, and a gap is formed at the boundary. Since the lower frame joint portion 12a and the lower plate joint portion 12b do not overlap with each other in a plane, joining work using bolts or the like for joining them is easy. Moreover, since it is not necessary to form an escape portion for attaching a bolt or the like in the upper part of the lower block 11, it is not necessary to make the lower block 11 excessively thick, and the overall height of the gantry 1 can be lowered.

  Moreover, since the rib 23 is formed in the support | pillar 21, the intensity | strength of the support | pillar 21 is high. Further, since the plate member 33 is provided so as to straddle the ribs 23 of the adjacent support columns 21, the rigidity in the horizontal direction can be increased. At this time, since the plate member 33 is directly joined to the rib 23 of the support column 21 and the joint portion can be brought close to the support column 21, the effect of improving the rigidity is great. Further, since the reinforcing member can be fixed to the support column 21, it is not necessary to form ribs for fixing the reinforcing member on the upper and lower frames, and therefore the length of the support column can be shortened. Therefore, the overall height of the gantry can be lowered.

  Further, the plate member 33 can be arranged with a duct or the like at an arbitrary site. That is, since it is easy to install a duct or the like penetrating the plate member at an arbitrary part of the plate member 33, when the duct or the like is arranged at the lower part of the gantry, the layout is highly flexible.

  Further, the upper plate 53 is joined to the upper frame 39 by the upper blocks 45a and 45b. At this time, since the upper blocks 45a and 45b are plate-like members and can be brought into surface contact with each other, the surface pressure can be reduced, and the load from the upper plate 53 can be more reliably transmitted to the upper frame 39. Can do.

  At this time, the horizontal fine adjustment of the upper plate 53 can also be performed by changing the thickness of one of the upper block 45a or the upper block 45b to function as a spacer.

  As mentioned above, although embodiment of this invention was described referring an accompanying drawing, the technical scope of this invention is not influenced by embodiment mentioned above. It is obvious for those skilled in the art that various modifications or modifications can be conceived within the scope of the technical idea described in the claims. It is understood that it belongs.

  For example, in the gantry 1, the example in which the plate member 33 is used as the reinforcing member is shown, but the present invention is not limited to this. FIG. 10 is a front view showing a gantry 1a using a turnbuckle 59 as a reinforcing member.

  As described above, the ribs 23 are formed in the support columns 21, and the holes 25 (FIG. 6) are formed in the ribs 23. In the gantry 1a, a turnbuckle 59 is provided so as to join the ribs 23 between adjacent columns 21 substantially diagonally.

  Even with the gantry 1a using the turnbuckle 59, substantially the same effect as the gantry 1 can be obtained.

  Further, in the gantry 1 using the plate member 33, the plate member 33 may be joined not only to the support column 21 but also to the upper and lower frames. FIG. 11 is a partial cross-sectional view showing a state in which the plate member 33 is joined to the support column 21 and the upper and lower frames.

  As described above, the upper frame 39 is provided with the rib 41. Similarly, although not shown, the lower frame 15 is provided with ribs 17 (FIG. 1). In the gantry 1, the ribs 23 of the support columns 21 are formed on the same plane and the plate member 33 is joined. However, in this embodiment, the upper and lower ribs 17 and 41 are on the same plane in addition to the ribs 23. Be placed.

  Further, as shown in the drawing, holes 44 are formed in the ribs 41. The upper part of the plate member 33 is fixed to the rib 41 by a bolt 42. Similarly, a hole is formed in the lower rib 17 and the plate member 33 is fixed with a bolt. That is, in the present embodiment, the side end portion of the plate member 33 is fixed to the rib 23 of the support column 21, and the upper and lower end portions of the plate member are fixed to the ribs 17 and 41 of the upper and lower frames, respectively. Therefore, the plate member 33 is more reliably fixed and high rigidity can be obtained.

1, 1a ........ Still 3 ......... Lower plate 5 ......... Hole 7 ......... Notch 9 ...... Bolt 11 ......... Lower block 12a ......... Lower frame joint 12b ......... Lower plate Joint part 13a, 13b ......... hole 15 ......... lower frame 17 ......... rib 21 ......... post 23 ......... rib 25 ......... hole 27a, 27b ......... flange part 29a, 29b ......... hole 31 ......... Bolt 33 ......... Plate member 35 ......... Hole 37 ......... Turnbuckle 39 ......... Bolt 41 ......... Rib 42 ......... Bolt 43 ......... Hole 44 ......... Hole 45a, 45b ......... Upper block 47 ......... Hole 49a, 49b ......... Hole 51 ......... Bolt 53 ......... Upper plate 55 ......... Hole 57 ......... Bolt 59 ......... Turnbuckle 61 ......... Support leg Part 63 ......... Floor panel 65 ......... Installation site

Claims (3)

A lower plate,
A lower block provided at each of the four corners on the lower plate;
A lower frame joined to the lower plate via the lower block;
Support columns provided at the four corners on the lower frame,
An upper frame joined to the lower frame via the support;
Upper blocks respectively joined to four corners on the upper frame;
An upper plate joined to the upper frame via the upper block;
Comprising
The lower block has a lower plate joint portion joined to the lower plate and a lower frame joint portion joined to the lower frame, and is interposed between the lower plate joint portion and the lower frame joint portion. A base for a free access floor, wherein a step is provided, and a joining position when joining the lower block to the lower plate does not overlap with a joining position when joining the lower frame to the lower block.   The free-access floor mount according to claim 1, wherein the height of the step is higher than the head height of a bolt used for joining to the lower plate. Using the free-access floor mount according to claim 1 or 2,
A support material for supporting the free access floor panel is disposed in a portion other than the installation portion of the free access floor mount,
The lower plate has a thickness larger than that of the leg portion of the support member, and the lower frame joint portion of the lower block protrudes above the leg portion. .

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