Thickened raised floor

Abstract

A thickened raised floor comprises a ceiling having a ground side and a honeycomb side opposite to each other; the rib structure comprises first to seventh ribs which are at least 25mm in height and serve as main ribs; wherein the thickness of the top plate in each concave area defined by the two fourth ribs and the two fifth ribs and the thickness of the top plate in each concave area defined by the fourth ribs, the fifth ribs and the two seventh ribs are larger than the thickness of the top plate in the other concave areas, and a plurality of blind holes located on the honeycomb side are formed in the top plate in each concave area. Therefore, the structural strength and the bearing capacity of the thickened raised floor are improved, and the thickened raised floor can bear heavy machine equipment with increasing weight in the semiconductor technology.

Description

TECHNICAL FIELD

[0001] The present invention relates to a floor, and more particularly to a thickened raised floor with a rib structure. BACKGROUND

[0002] In a clean room of a semiconductor factory, in order to consider the placement of machines, the layout of various pipelines, and the requirements for ventilation and cleanliness, the floor is usually a raised floor that can bear weight and is not easy to generate particles, so that the floor can bear the machines while avoiding particle pollution and maintaining air quality.

[0003] However, as the size of wafers increases and the process becomes more complex, the size and weight of the machines also increase, making the structural strength of the existing raised floor unable to bear those heavier machine equipment.

[0004] In addition, when the machines are placed in a high-tech factory, the floor corresponding to the machine position can be used to bear the heavier floor, and the floor at other positions can be used to bear the lighter floor, thereby reducing the assembly cost and the overall weight. However, the height of the floor with different weights or thicknesses is also different. Traditionally, the same height of the raised floor is used, so that the surface of the assembled raised floor can maintain flatness. Therefore, how to maintain the flatness of the surface of the assembled raised floor with different loads and heights, and avoid the inconvenience and safety of personnel moving and transporting goods on the raised floor due to the uneven surface has become a problem that the existing raised floor needs to overcome.

[0005] Therefore, the present invention is to overcome the above-mentioned problems of the prior art, and to develop a thickened raised floor. SUMMARY

[0006] In view of the above-mentioned defects of the prior art, the present invention provides a thickened raised floor, comprising: a top plate having a ground side and a honeycomb side; and a rib structure arranged on the honeycomb side of the top plate to form a plurality of recessed areas, the rib structure comprising a first rib, a second rib, a third rib, a fourth rib, a fifth rib, a sixth rib and a seventh rib arranged in sequence from each edge of the top plate to the center, and the first rib to the seventh rib as the main ribs, the height of which relative to the honeycomb side is at least 25 mm; wherein the thickness of the top plate in each recessed area surrounded by each pair of parallel and adjacent fourth ribs, fifth ribs and each pair of parallel and adjacent fourth ribs, fifth ribs perpendicular thereto, and each recessed area surrounded by each pair of parallel and adjacent fourth ribs, fifth ribs and two adjacent seventh ribs is greater than the thickness of the top plate in the remaining recessed areas, and a plurality of blind holes are arranged on the honeycomb side.

[0007] In the foregoing thickened raised floor, the plurality of recessed areas are arranged in an array to form a honeycomb structure on the honeycomb side of the floor panel.

[0008] In the foregoing thickened raised floor, each of the first ribs is formed at the edge of the floor panel and surrounds a frame of the thickened raised floor.

[0009] In the foregoing thickened raised floor, each of the first ribs comprises two first side end sections adjacent to two ends thereof respectively and a first middle section sandwiched between the two first side end sections, and the height of the first middle section is higher than the height of the two first side end sections.

[0010] In the foregoing thickened raised floor, the intersection of the first middle section and the two first side end sections is adjacent to the intersection of the first rib and two third ribs where the first middle section and the two first side end sections are located respectively.

[0011] In the foregoing thickened raised floor, the sum of the maximum height of the first rib relative to the honeycomb side of the floor panel and the thickness of the floor panel is at least 73 mm, and the thickness of the floor panel is at least 4 mm.

[0012] In the foregoing thickened raised floor, the width of the first rib is 5 to 12 mm.

[0013] In the foregoing thickened raised floor, the height of the second to seventh ribs relative to the honeycomb side of the floor panel is 25 to 55 mm.

[0014] In the foregoing thickened raised floor, each of the second ribs comprises two second side end sections adjacent to two ends thereof respectively and a second middle section sandwiched between the two second side end sections, and the height of the second middle section is higher than the height of the two second side end sections.

[0015] In the foregoing thickened raised floor, the intersection of the second middle section and the two second side end sections is adjacent to the intersection of the second rib and two fifth ribs where the second middle section and the two second side end sections are located respectively.

[0016] In the foregoing thickened raised floor, the height of each of the fourth ribs between the regions surrounded by two third ribs and two fifth ribs adjacent to each corner of the floor panel and between every two adjacent seventh ribs is higher than the height thereof outside the regions.

[0017] In the foregoing thickened raised floor, the width of the second to seventh ribs is 3 to 6 mm.

[0018] In the foregoing thickened raised floor, the rib structure further comprises a plurality of auxiliary ribs with a height lower than 25 mm, and each of the plurality of recessed areas between adjacent second ribs, third ribs, fourth ribs, fifth ribs, sixth ribs and seventh ribs is provided with a plurality of the auxiliary ribs.

[0019] In the aforementioned thickened raised floor, in addition to the plurality of auxiliary ribs in the area surrounded by the four seventh ribs being cross-shaped staggered, the plurality of auxiliary ribs in the remaining areas extend in a single direction, so that the plurality of main ribs and the plurality of auxiliary ribs form a plurality of recesses therebetween.

[0020] In the aforementioned thickened raised floor, nine blind holes are provided in the recessed areas surrounded by two fourth ribs and two fifth ribs adjacent to each corner of the ceiling plate, and in the recessed areas surrounded by the fourth rib, the fifth rib and two adjacent seventh ribs adjacent to each edge of the ceiling plate, and the nine blind holes are arranged in the plurality of recesses.

[0021] In the aforementioned thickened raised floor, the height of the auxiliary rib relative to the honeycomb side of the ceiling plate is at least 6 mm, and the width is at least 2.5 mm.

[0022] In the aforementioned thickened raised floor, the four seventh ribs in the rib structure are arranged in a cross shape to divide the thickened raised floor into four areas adjacent to the four corners of the ceiling plate, and 25 sub-areas are formed between adjacent second ribs, third ribs, fourth ribs, fifth ribs and sixth ribs in the four areas, each sub-area has a recessed area, and a wing plate is formed around the four corners of the ceiling plate, and the thickness of the wing plate and the thickness of the ceiling plate in the recessed area surrounded by the four seventh ribs are greater than the thickness of the ceiling plate in the 25 sub-areas.

[0023] As can be seen from the above, the thickened raised floor of the present application mainly has a rib structure with a plurality of main ribs having a height relative to the honeycomb side of 25 to 73 mm or more, so as to improve the structural strength of the thickened raised floor, so that it can bear heavier equipment such as equipment with a weight of 3150 kg or more (the bearing load under a bending amount of the thickened raised floor of 2 mm), and the breaking strength can reach 6100 kg or more. At the same time, through the design that the first ribs, the second ribs and the fourth ribs have a higher height only in some sections with a larger load, some main ribs have a thicker thickness in some sections with a larger load, and a plurality of blind holes are arranged in some recessed areas, the overall weight of the floor is reduced, the material cost and the burden on the floor below are reduced, and the structural strength is not reduced. Therefore, compared with the prior art, the thickened raised floor of the present application can bear heavier equipment without greatly increasing its own weight, and after being assembled with floors of different heights, the surface of the overall raised floor can still be maintained on the same horizontal plane to meet the surface flatness requirement. BRIEF DESCRIPTION OF DRAWINGS

[0024] FIG. 1A It is a perspective view of an embodiment of the thickened raised floor of the present application.

[0025] FIG. 1B Fig. 1 is a perspective view of a raised floor system according to the present application. FIG. 1A Fig. 2 is a front plan view of the raised floor system of Fig. 1.

[0026] FIG. 1C Fig. 3 is a sectional view taken along the section line C-C of Fig. 1. FIG. 1C-1 Fig. 4 is a sectional view taken along the section line C'-C' of Fig. 1. FIG. 1B Fig. 5 is a perspective view of the raised floor system of Fig. 1 from another angle. Fig. 6 is a sectional view taken along the section line D-D of Fig. 1.

[0027] Fig. 7 is a sectional view taken along the section line E-E of Fig. 1. FIG. 1D Fig. 8 is a sectional view taken along the section line F-F of Fig. 1. FIG. 1A Fig. 9 is a sectional view taken along the section line G-G of Fig. 1. Fig. 10 is a sectional view taken along the section line H-H of Fig. 1.

[0028] Reference signs are as follows:

[0029] 1 thickened raised floor

[0030] 1a rib structure

[0031] 1d wing plate

[0032] 10 ceiling panel

[0033] 10a ground side

[0034] 10b honeycomb side

[0035] 11 first rib

[0036] 11a support seat

[0037] 11c first intermediate section

[0038] 11s first side end section

[0039] 12 second rib

[0040] 12c second intermediate section

[0041] 12s second side end section

[0042] 13 third rib

[0043] 14 fourth rib

[0044] 15 fifth rib

[0045] 16 sixth rib

[0046] 17 seventh rib

[0047] 18 auxiliary rib

[0048] 19a blind hole

[0049] d1-d8, d4', d7' width

[0050] H total height

[0051] h1-h8, h1', h2', h4' height

[0052] L length

[0053] R recess

[0054] S recessed area

[0055] t0, t0', t0", t1 thickness

[0056] td depth

[0057] w spacing distance DETAILED DESCRIPTION

[0058] Other advantages and effects of the present application can be easily understood by those skilled in the art from the content disclosed in the present specification.

[0059] It should be noted that the structures, proportions, sizes, etc. shown in the accompanying drawings of the present specification are only used to cooperate with the content disclosed in the present specification for the understanding and reading of those skilled in the art, and do not have technical substantive significance to limit the implementation conditions of the present application, so any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present application, should still fall within the scope of the disclosed technology. At the same time, the terms such as "upper", "lower", "left", "right" and "one" in the present specification are only for the convenience of clear description, and not to limit the scope of the present application, and the change or adjustment of the relative relationship without substantial change of the technical content is also considered as the implementation scope of the present application.

[0060] FIGS. 1A-1D A schematic view of an embodiment of the thickened raised floor 1 of the present application. The thickened raised floor 1 of the present embodiment is used to bear a relatively heavy load, and the bearing load can reach at least 3150 kg.

[0061] The thickened raised floor 1 has a deck 10 and a rib structure 1a provided on the deck 10.

[0062] The deck 10 has an opposite ground side 10a and a honeycomb side 10b, and the ground side 10a is a flat surface, and the rib structure 1a is provided on the honeycomb side 10b.

[0063] In the present embodiment, the deck 10 is in a rectangular shape, and the thickness t0 thereof is 4 mm except for some areas. The deck 10 is surrounded by a wing plate 1d, so that the length L of each side of the deck 10 together with the wing plate 1d on both sides is 600 mm. The thickness t1 of the wing plate 1d is 6 mm, that is, the thickness t1 of the wing plate 1d is greater than the thickness t0 of the deck 10.

[0064] The rib structure 1a includes first ribs 11, second ribs 12, third ribs 13, fourth ribs 14, fifth ribs 15, sixth ribs 16 and seventh ribs 17 arranged in sequence from the edges of the top plate 10 to the middle thereof (i.e. FIG. 1B the left and right sides and the upper and lower sides are arranged toward the middle direction, or FIG. 1C the left and right sides in the middle direction are arranged toward the middle direction) so that the first to seventh ribs 11-17 on opposite sides are symmetrically distributed on the honeycomb side 10b (or symmetrically distributed upward as shown in FIG. 1C-1 the left and right sides in the middle direction are arranged toward the middle direction) so that the first to seventh ribs 11-17 on opposite sides are symmetrically distributed on the honeycomb side 10b (or symmetrically distributed upward as shown in FIG. 1B the left and right sides in the middle direction are arranged toward the middle direction) so that the first to seventh ribs 11-17 on opposite sides are symmetrically distributed on the honeycomb side 10b (or symmetrically distributed upward as shown in

[0065] The first to seventh ribs 11-17 are main ribs, and the heights h1-h7 of the first to seventh ribs 11-17 relative to the honeycomb side 10b are at least 25 mm. Since the first to seventh ribs 11-17 as main ribs are arranged in the same manner in the longitudinal direction and the transverse direction, FIG. 1C only the cross section of the rib structure 1a in the longitudinal direction is shown as an example.

[0066] In this embodiment, each first rib 11 is formed at the edge of the top plate 10, and the four first ribs 11 at the four edges are connected to each other to form a frame around the thickened raised floor 1. In addition, each first rib 11 includes two first side end sections 11s adjacent to the two ends thereof and a first middle section 11c interposed between the two first side end sections 11s. The intersection of the first middle section 11c and the two first side end sections 11s is adjacent to the intersection of the first rib 11 and the two third ribs 13, and the height of the first middle section 11c is higher than the height of the two first side end sections 11s. The height of the first side end section 11s is lower to avoid interference when installing a cross beam (not shown).

[0067] For example, the height h1 of the first intermediate section 11c of the first rib 11 relative to the honeycomb side 10b is 69mm, and the height h1' of the first side end section 11s relative to the honeycomb side 10b is 57mm, and an L-shaped support seat 11a is formed at each of the four corners of the thickened elevated floor 1 at both ends of the plurality of first ribs 11. The four L-shaped support seats 11a of the thickened elevated floor 1 are respectively supported on the support plates (not shown) of the legs fixed to the thickened elevated floor 1. That is, the height h1 of the first intermediate section 11c of the first rib 11 relative to the honeycomb side 10b is greater than the height h1' of the first side end section 11s relative to the honeycomb side 10b and the heights h2-h7 of the second to seventh ribs 12-17 relative to the honeycomb side 10b. The sum of the height h1 of the first intermediate section 11c of the first rib 11 relative to the honeycomb side 10b and the height (i.e. the thickness t0) of the ceiling 10 below, that is, the total height H of the center of the first rib 11 relative to the ground side 10a, is 73mm (i.e. H = h1 + t0), that is, the height of the thickened elevated floor 1 is 73mm. Because the L-shaped support seats 11a at the four corners form a groove, the thickened elevated floor 1 can maintain the surface of the overall elevated floor at the same level after being assembled with other elevated floors with lower load-bearing capacity and lower height.

[0068] Similarly, each of the second ribs 12 includes two second side end sections 12s adjacent to both ends thereof and a second intermediate section 12c sandwiched between the two second side end sections 12s. The intersection of the second intermediate section 12c and the two second side end sections 12s is adjacent to the intersection of the second rib 12 and the two fifth ribs 15 where the second rib 12 is located. The height h2 of the second intermediate section 12c is higher than the height h2' of the two second side end sections 12s.

[0069] Furthermore, the heights h2-h7 of the third and fifth to seventh ribs of the rib structure 1a can be the same or different as required. For example, the heights h3 and h5 of the third rib 13 and the fifth rib 15 relative to the honeycomb side 10b are both 50mm, the height h2 of the second intermediate section 12c of the second rib 12 relative to the honeycomb side 10b and the height h7 of the seventh rib 17 relative to the honeycomb side 10b are both 55mm, and the height h6 of the sixth rib 16 relative to the honeycomb side 10b is 25mm. In addition to the first rib 11 and the second rib 12, the fourth rib 14 also has different heights depending on the different positions. The height h4 of the fourth rib 14 relative to the honeycomb side 10b between the area surrounded by the two third ribs 13 and the two fifth ribs 15 adjacent to the corners of the ceiling 10 and between every two adjacent seventh ribs 17 is the same as the heights h3 and h5 of the third rib 13 and the fifth rib 15 relative to the honeycomb side 10b, that is, 50mm, but the height h4' of the fourth rib 14 outside the plurality of areas relative to the honeycomb side 10b is 32mm.

[0070] Furthermore, the four seventh ribs 17 arranged in a grid pattern in both the longitudinal and transverse directions divide the honeycomb side 10b of the ceiling panel 10 into four regions. Within each region, adjacent second ribs 12, third ribs 13, fourth ribs 14, fifth ribs 15, and sixth ribs 16 form 25 sub-regions, each with a recessed area S. The region enclosed by the four seventh ribs 17 also has a recessed area S. Further, the thickness t0” of the ceiling panel 10 within the recessed area S enclosed by the four seventh ribs 17 can be greater than the thickness t0 of the ceiling panel 10 elsewhere, depending on requirements. For example, the thickness t0” of the ceiling panel 10 within the recessed area S enclosed by the four seventh ribs 17 can be increased to 6 mm to improve the strength of the thickened raised floor 1 at its center.

[0071] In addition, such as FIG. 1C and FIG. 1C-1 As shown, the widths d1 to d7 of each rib can be the same or different depending on the requirements. For example, in this embodiment, the first rib 11 is narrower at both ends and wider in the middle, with a width d1 of 5 to 12 mm; the width d2 of the second rib 12 is 6 mm; the widths d3 of the third rib 13 and d5 of the fifth rib 15 are both 3 mm; and the width d6 of the sixth rib 16 is 2.5 mm. The fourth rib 14 and the seventh rib 17 are particularly noteworthy. The width d4 of the fourth rib 14 between the areas enclosed by the two third ribs 13 and the two fifth ribs 15 at each corner of the top plate 10, and between each pair of adjacent seventh ribs 17, is 4 mm, while the width d4' of the segments outside these areas is 2.5 mm. The width d7 of the segment of the seventh rib 17 within the area enclosed by the four seventh ribs 17 is increased to 6 mm, the same as the width d2 of the second rib 12, so as to further enhance the structural strength of the top plate 10 within the area enclosed by the four seventh ribs 17. However, the width d7' of the segment outside the area enclosed by the four seventh ribs 17 only needs to be 4 mm.

[0072] In a preferred embodiment, the rib structure 1a may also be provided with a plurality of auxiliary ribs 18, each with a height smaller than that of the plurality of main ribs. For example... FIG. 1C As shown, the height h8 of each auxiliary rib 18 relative to the honeycomb side 10b is, for example, 6 mm or higher, but all are lower than the minimum height 25 mm of the plurality of main ribs relative to the honeycomb side 10b. The width d8 of the plurality of auxiliary ribs 18 is at least 2.5 mm. The plurality of auxiliary ribs 18 are correspondingly formed in each of the recessed areas S, and except for the area enclosed by the four seventh ribs 17 where the plurality of auxiliary ribs 18 intersect in a cross shape, the auxiliary ribs 18 in the remaining areas extend in a single direction without intersecting each other, such as... FIG. 1C As shown, two parallel auxiliary ribs 18 are arranged in a recessed area S, thereby dividing the bottom of the recessed area S into two recesses R.

[0073] In addition, the thickness t0' of the floor panel 10 in the eight recessed areas S (four recessed areas S formed by each pair of parallel and adjacent fourth and fifth ribs 14, 15 and four recessed areas S formed by each pair of parallel and adjacent fourth, fifth and two adjacent seventh ribs 14, 15, 17) is greater than the thickness t0 of the floor panel 10 in the regions outside the center. For example, if the thickness t0 of the floor panel 10 in the majority of the regions is 4 mm, the thickness t0' of the floor panel 10 in the eight recessed areas S can be increased to 8 mm. In addition, a plurality of blind holes 19a on the honeycomb side are provided in each of the eight recessed areas S. In the present embodiment, nine blind holes 19a are provided in each of the eight recessed areas S, and the nine blind holes 19a are evenly distributed in the three recessed portions R separated by the two auxiliary ribs 18. The depth td of each blind hole 19a is, for example, 4 mm, and the thickness t0' of the floor panel 10 beside each blind hole 19a is increased to 8 mm as described above, so the thickness of the floor panel 10 below the bottom of each blind hole 19a is also t0, that is, 4 mm thick. As shown in FIG. 6, the height h4 of the fourth ribs 14 in the regions where the blind holes 19a are provided is greater than the height h4' of the fourth ribs 14 outside the regions, so the support of the fourth ribs 14 on the regions is improved. In addition, the thickness t0' of the floor panel 10 in the regions is also increased, so the overall structural strength affected by the provision of the blind holes 19a in the regions is compensated. FIG. 1C and FIG. 1C-1 As shown in FIG. 6, the height h4 of the fourth ribs 14 in the regions where the blind holes 19a are provided is greater than the height h4' of the fourth ribs 14 outside the regions, so the support of the fourth ribs 14 on the regions is improved. In addition, the thickness t0' of the floor panel 10 in the regions is also increased, so the overall structural strength affected by the provision of the blind holes 19a in the regions is compensated.

[0074] Since the thickness of the floor panel 10 in the regions where the blind holes 19a are provided and the height and strength of the ribs around the regions are increased while the blind holes 19a are provided, the thickened raised floor 1 in the present embodiment can reduce the weight of the thickened raised floor 1 and save the cost of materials while maintaining the load-bearing capacity of the thickened raised floor 1.

[0075] In summary, the thickened raised floor 1 of the present embodiment has the first to seventh ribs 11-17 of the rib structure 1a with a height h1-h7 of at least 25 mm relative to the honeycomb side 10b, so as to improve the structural strength of the thickened raised floor 1, and thus the thickened raised floor 1 can support the heavy equipment in semiconductor processes. Meanwhile, the first ribs 11, the second ribs 12, and the fourth ribs 14 have a higher height in the sections with a higher load, and the main ribs have a higher thickness in the sections with a higher load, so that the overall weight is reduced, and the material cost and the burden on the floor below are reduced. The L-shaped support seats 11a formed at the four corners of the thickened raised floor 1 are recessed, so that the thickened raised floor 1 and other types of raised floors with a lower load and a lower height can be erected together, and the surface of the overall raised floor can be maintained on the same level.

[0076] Furthermore, the plurality of blind holes 19a are arranged in only part of the recessed areas S, so that the structural strength coefficient is not reduced.

[0077] The above embodiments are only used to illustrate the principles and effects of the present application, and are not used to limit the present application. Those skilled in the art can modify the above embodiments without departing from the spirit and scope of the present application. Therefore, the protection scope of the present application should be subject to the claims.

Claims

1. A thickened raised floor, comprising: The ceiling has a ground side and a honeycomb side; as well as A rib structure is provided on the honeycomb side of the ceiling to form multiple recessed areas. The rib structure includes a first rib, a second rib, a third rib, a fourth rib, a fifth rib, a sixth rib, and a seventh rib arranged sequentially from each edge of the ceiling towards the center. The first to seventh ribs serve as main ribs, and their height relative to the honeycomb side is at least 25 mm. The thickness of the top plate in each of the recessed areas formed by each pair of parallel and adjacent fourth ribs, fifth ribs and each pair of parallel and adjacent fourth ribs and fifth ribs perpendicular to them, and the thickness of the top plate in each of the recessed areas formed by each pair of parallel and adjacent fourth ribs, fifth ribs and two adjacent seventh ribs are greater than the thickness of the top plate in the other recessed areas, and each of them has a plurality of blind holes located on the honeycomb side.

2. The thickened raised floor as described in claim 1, wherein, The multiple recessed areas are arranged in an array to form a honeycomb structure on the side of the honeycomb.

3. The thickened raised floor as described in claim 1, wherein, Each of the first ribs is formed at the edge of the ceiling and surrounds the frame of the thickened raised floor.

4. The thickened raised floor as described in claim 1, wherein, Each of the first ribs includes two first lateral segments adjacent to its two ends and a first intermediate segment sandwiched between the two first lateral segments, and the height of the first intermediate segment is higher than the height of the two first lateral segments.

5. The thickened raised floor as described in claim 4, wherein, The intersection of the first middle segment with the two first lateral segments is adjacent to the intersection of the first rib and the two third ribs, respectively.

6. The thickened raised floor as described in claim 1, wherein, The sum of the maximum height of the first rib relative to the honeycomb side of the ceiling and the thickness of the ceiling is at least 73 mm, while the thickness of the ceiling is at least 4 mm.

7. The thickened raised floor as described in claim 1, wherein, The width of the first rib is 5 to 12 millimeters.

8. The thickened raised floor as described in claim 1, wherein, The height of the second to seventh ribs relative to the honeycomb side of the ceiling is 25 to 55 millimeters.

9. The thickened raised floor as described in claim 1, wherein, Each of the second ribs includes two second side segments adjacent to its two ends and a second intermediate segment sandwiched between the two second side segments. The height of the second intermediate segment is higher than the height of the two second side segments, and the intersection of the second intermediate segment and the two second side segments is adjacent to the intersection of the second rib and the two fifth ribs.

10. The thickened raised floor as described in claim 1, wherein, The height of each fourth rib between the area enclosed by the two third ribs and the two fifth ribs at each corner of the ceiling and between each pair of adjacent seventh ribs is higher than its height outside those areas.

11. The thickened raised floor as described in claim 1, wherein, The width of the second to seventh ribs is 3 to 6 millimeters.

12. The thickened raised floor as described in claim 1, wherein, The rib structure further includes multiple auxiliary ribs with a height of at least 6 mm and a width of at least 2.5 mm. Multiple auxiliary ribs are arranged in the multiple recessed areas between each of the adjacent second, third, fourth, fifth, sixth and seventh ribs. Except for the multiple auxiliary ribs in the area surrounded by the four seventh ribs, which are arranged in a cross shape, the multiple auxiliary ribs in the other areas extend in a single direction, so that multiple recesses are formed between the multiple main ribs and the multiple auxiliary ribs.

13. The thickened raised floor as described in claim 12, wherein, Nine blind holes are provided in each of the four recessed areas surrounded by each pair of parallel and adjacent fourth ribs, the fifth ribs and each pair of parallel and adjacent fourth ribs and the fifth ribs perpendicular to them, and in each of the four recessed areas surrounded by each pair of parallel and adjacent fourth ribs, the fifth ribs and two adjacent seventh ribs. The nine blind holes are arranged in the multiple recesses. The depth of each blind hole is 4 mm, and the thickness of the top plate next to each blind hole is increased to 8 mm.

14. The thickened raised floor as described in claim 1, wherein, The four seventh ribs in the rib structure are arranged in a grid pattern to divide the thickened raised floor into four areas adjacent to the four corners of the ceiling. The second, third, fourth, fifth, and sixth ribs in the four areas form 25 sub-areas, each of which has a recessed area. A wing plate is formed around the ceiling, and the thickness of the wing plate and the thickness of the ceiling in the recessed area surrounded by the four seventh ribs are both greater than the thickness of the ceiling in the 25 sub-areas.

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