CN218149479U - Light grid floor - Google Patents

Abstract

A light grid floor comprises a top plate and a rib structure, wherein the rib structure and the top plate are integrally cast by adopting aluminum alloy, a plurality of through holes are formed in the top plate to form ventilation of more than 50%, and therefore the requirement of semiconductor process cleanliness can be met.

Description

Light grid floor

Technical Field

The utility model relates to a floor especially relates to a light-duty grid floor with high ventilation rate.

Background

The existing elevated floors, such as TWM626914 patent, TWM626915 patent, TWM626017 patent, TWM626032 patent, TWM625241 patent, TWM625242 patent, TWM625267 patent, TWM625270 patent, TWM625289 patent, TWM596253 patent and the like, can be used for the ventilation floors of process areas besides the factory floor of semiconductor process, but the ventilation rate is less than twenty percent, and the requirement of the ventilation rate cannot be met.

However, the grid floor for the gutter cover is manufactured by welding, such as the TW536257 patent, which is prone to deformation, defects and fracture due to the welding process.

Moreover, the ventilation quantity of the existing grid floor is too small, so that the air return quantity is insufficient, and the requirement of the cleanliness of a semiconductor process cannot be met.

In addition, the structural strength of the conventional grid floor is often insufficient, so that the grid floor is easily broken when heavy equipment in a semiconductor process is carried on the grid floor.

On the other hand, the conventional grid floor also has the problem of overweight, which not only wastes materials, but also increases the manufacturing cost.

Therefore, how to overcome the above problems of the prior art has become a problem to be overcome in the industry.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned drawbacks of the prior art, the present invention provides a light-weight grid floor that at least partially solves the problems of the prior art.

The utility model discloses a light-duty grid floor includes: an upper plate having a ground side and a honeycomb side opposite to each other, wherein the upper plate is formed with a plurality of through holes communicating the ground side and the honeycomb side to provide a ventilation amount of 50% or more; and a plurality of rib structures which are cast integrally with the antenna plate by aluminum alloy and are arranged on the honeycomb side of the antenna plate to form a plurality of recesses, so that each recess is provided with three or four through holes, wherein the rib structures are sequentially defined with a first rib, a second rib, a third rib, a fourth rib, a fifth rib, a sixth rib and a seventh rib from the edge of the antenna plate to the middle, the heights of the first rib, the second rib, the third rib, the fifth rib and the seventh rib relative to the honeycomb side are at least 25 mm to serve as main ribs, and the heights of the fourth rib and the sixth rib relative to the honeycomb side are lower than 25 mm to serve as middle ribs.

In the aforementioned light grille floor, the plurality of concave portions are arranged in an array to form a honeycomb structure on the honeycomb side.

In the light-weight grating floor, the first rib is formed at the edge of the ceiling to become the edge rib of the light-weight grating floor, so as to serve as the frame of the light-weight grating floor.

In the aforementioned light-weight grating floor, the sum of the height of the first rib relative to the honeycomb side and the thickness of the top plate is 50 mm, and the thickness of the top plate is 2 to 3 mm.

In the light weight grill floor described above, the height of the second, third, fifth, and seventh ribs with respect to the honeycomb side is 27 to 42 mm.

In the light-weight grating floor, the height of the fourth rib and the sixth rib with respect to the honeycomb side is 12 to 13 mm.

In the aforementioned light grille floor, the width of the first rib is 4.8 to 7 mm.

In the aforementioned light grille floor, the width of the second rib, the third rib, the fifth rib and the seventh rib is 2.6 to 5.5 mm.

In the aforementioned light grille floor, the width of the fourth rib and the sixth rib is 2.6 to 3.5 mm.

In the light-weight grating floor, the rib structure forms a # -shaped rib by two seventh ribs in the longitudinal direction and the transverse direction to divide the light-weight grating floor into four regions, 25 sub-regions are formed between the adjacent second, third, fourth, fifth and sixth ribs in the four regions, each sub-region is provided with a recess, another recess is formed in the center of the # -shaped rib formed by the seventh rib, each sub-region is provided with three or four strip-shaped through holes to form ventilation of more than 50%, and a wing plate is formed around the ceiling plate, so that the thickness of the wing plate is larger than that of the ceiling plate.

In the aforementioned light grille floor, the rib structure further includes a plurality of auxiliary ribs having a height lower than that of the main rib, and each of the auxiliary ribs is correspondingly formed in each of the recesses, so that two auxiliary ribs are disposed in a single recess. For example, the height of the auxiliary ribs relative to the honeycomb side is at least 8.5 mm, and the width is 3 to 3.2 mm.

In the aforementioned light-weight grille floor, the widths of the first rib and the seventh rib at the two opposite sides of the honeycomb side are respectively smaller than the widths of the first rib and the seventh rib at the middle of the honeycomb side, so as to reduce the weight of the light-weight grille floor.

In the light-weight grille floor, the first ribs are formed with the foot seats at four corners of the light-weight grille floor, and the foot seats are fixed on the supporting foot frames.

Therefore, the utility model discloses an in the light-duty grid floor, mainly adopt aluminum alloy integrated into one piece casting through this day board and these a plurality of rib structures to can not produce the deformation when making this light-duty grid floor, and be difficult for producing defect and fracture scheduling problem, so compare in prior art, the utility model discloses a reliability on light-duty grid floor is splendid.

Furthermore, through the design of a plurality of through holes, the ventilation volume is more than 50%, so that the ventilation volume can be increased to meet the requirement of the cleanliness of the semiconductor process.

In addition, the height of the main rib of the rib structure relative to the honeycomb side is at least 25 mm to improve the structural strength of the light-weight grating floor, so compared with the prior art, the light-weight grating floor can bear heavier equipment in a semiconductor process to avoid the problem of cracking of the light-weight grating floor in use.

Drawings

Fig. 1A is a schematic perspective view of a light-weight grid floor according to a first embodiment of the present invention.

Fig. 1B is a front plan view of fig. 1A.

FIG. 1C is a cross-sectional view taken along line C-C of FIG. 1B in one direction.

FIG. 1D is a cross-sectional view of FIG. 1B taken along line D-D in one direction.

Fig. 1E is a perspective view of fig. 1A from another viewing angle.

Fig. 2A is a schematic perspective view of a light-weight grille floor according to a second embodiment of the present invention.

Fig. 2B is a front plan view of fig. 2A.

FIG. 2C is a cross-sectional view of FIG. 2B taken along line C-C in one direction.

FIG. 2D is a cross-sectional view of FIG. 2B taken along line D-D in one direction.

Fig. 2E is a perspective view of fig. 2A from another view angle.

The reference numbers are as follows:

1,2 light grid floor

1a,2a rib structure

1b,2b foot stool

1c thimble position

1d,2d wing plate

10,20 day board

10a,20a ground side

10b,20b honeycomb side

100,200 through hole

11,21 first Rib

12,22 second Rib

13,23 third Rib

14,24 fourth Rib

15,25 fifth Rib

16,26 sixth Rib

17,27 seventh Rib

17a,18,27a,28 auxiliary ribs

Width of d1 to d8

Total height of H

h 0-h 8 height

Length of L

R, S concave part

Sum of T

t0, t1 thickness

w separation distance

Detailed Description

The following description of the embodiments of the present invention is provided by way of specific examples, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure of the present invention.

It should be understood that the structure, proportion, size and the like shown in the attached drawings are only used for matching with the content disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential meaning, and any structure modification, proportion relation change or size adjustment should still fall within the scope which can be covered by the technical content disclosed in the present invention without affecting the function and achievable purpose of the present invention. Meanwhile, the terms "upper", "lower", "left", "right" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the modifications may be changed or adjusted without substantial technical changes.

Fig. 1A to 1E are schematic views of a first embodiment of the light-weight grid floor 1 of the present invention. The light-weight grid floor 1 of the present embodiment is used to carry a heavy load, which is about 700 kg.

The light grid floor 1 is provided with a top plate 10 and a plurality of rib structures 1a arranged on the top plate 10, so that the top plate 10 and the rib structures 1a are integrally cast by aluminum alloy, the light grid floor 1 cannot be deformed and is not easy to generate defects, fracture and other problems when being manufactured.

The antenna panel 10 has a ground side 10a and a honeycomb side 10b opposite to each other, and the honeycomb side 10b is provided with a plurality of rib structures 1a in the longitudinal and transverse directions, respectively, so as to form a plurality of recesses S between the plurality of rib structures 1a in the longitudinal and transverse directions, wherein fig. 1C and 1D only show the longitudinal rib structures 1a, and the transverse rib structures 1a are arranged in the same manner as the longitudinal rib structures 1a to be symmetrical, so that the cross-section of the transverse rib structures 1a is omitted.

In the present embodiment, the top plate 10 is substantially rectangular, like a square plate, the length L is 600 mm and the thickness t0 is 2 mm, a wing plate 1d (the thickness t1 is 6 mm, which is greater than the thickness t0 of the top plate 10) is formed around the top plate 10, and foot seats 1b are formed on four corners of the light-weight grid floor 1, the bottom portions thereof are L-shaped convex portions (or L-shaped concave portions), and the foot seats 1b are fixed to support foot frames (not shown). For example, the foot seats 1b are used to adjust the total height H of the light-weight grating floor 1 so that a plurality of light-weight grating floors 1 are positioned at the same level when they are coupled.

Furthermore, the ground side 10a is a flat surface and the plurality of recesses S are arranged in an array to form a honeycomb structure having a plurality of pin locations 1c (approximately at the corners of a square area formed by every four recesses S) on the honeycomb side 10 b.

The rib structure 1a is formed by sequentially defining, from the edge of the top plate 10 to the middle (or in the left-right lateral direction as shown in fig. 1B and 1C), a first rib 11, a second rib 12, a third rib 13, a fourth rib 14, a fifth rib 15, a sixth rib 16, and a seventh rib 17, wherein the heights h1 to h3, h5, and h7 of the first to third, fifth, and seventh ribs 11 to 13,15,17 with respect to the honeycomb side 10B are at least 25 millimeters (mm), and the heights h4 and h6 of the fourth and sixth ribs 14,16 with respect to the honeycomb side 10B are lower than 25 mm, so that the first to third, fifth, and seventh ribs 11 to 13,15,17 serve as main ribs, and the fourth and sixth ribs 14,16 serve as middle ribs, wherein the first to sixth ribs 11 to 16 are bilaterally symmetrical with respect to the seventh rib 17 (or vertically symmetrical to the fourth and sixth ribs 14,16, 13, and 16, and w are distributed with the fourth, fifth, sixth ribs 11 to the seventh ribs 12,13, and 13 w, and the seventh ribs 11 to the seventh ribs 17 as a distance w between the seventh ribs 17.

In the present embodiment, the first rib 11 is formed at the edge of the ceiling 10 to become the side rib of the light grille floor 1, so as to be the frame of the light grille floor 1 for fixing the foot seat 1b. For example, the height H1 of the first rib 11 relative to the honeycomb side 10b is 48 mm, which is greater than the heights H2 to H7 of the second to seventh ribs 12 to 17 relative to the honeycomb side 10b, the sum T of the height H1 of the first rib 11 relative to the honeycomb side 10b and the thickness T0 of the antenna board 10 of the embodiment is 50 mm (i.e., T = H1+ T0), and the total height H of the height of the foot rest 1b, the height H1 of the first rib 11 relative to the honeycomb side 10b and the thickness T0 of the antenna board 10 is 55 mm of the foot height of the light grid floor 1.

Furthermore, the heights h 2-h 7 of the second to seventh ribs of the rib structure 1a may be the same or different according to requirements, and the arrangement of the second to seventh ribs 12-17 between the first rib 11 and the concave portions R, S in the middle is shown in fig. 1C. For example, the height h2 of the second rib 12 with respect to the honeycomb side 10b is 27 mm, the height h3 of the third rib 13 with respect to the honeycomb side 10b is 34 mm, the height h5 of the fifth rib 15 with respect to the honeycomb side 10b is 27 mm, the height h7 of the seventh rib 17 with respect to the honeycomb side 10b is 42 mm, and the heights h4 and h6 of the fourth and sixth ribs 14 and 16 with respect to the honeycomb side 10b are 12 mm, wherein two of the seventh ribs 17 in the longitudinal direction and the transverse direction form a grid pattern to divide the lightweight grid floor 1 into four regions, 25 sub-regions are formed between the second rib 12, the third rib 13, the fourth rib 14, the fifth rib 15 and the sixth rib 16 adjacent to each region, each sub-region has a recess S, and a recess R of another embodiment is formed at a central portion of the grid pattern. Further, the thickness of the top plate 10 in the recess R may be larger than the thickness t0 of the top plate 10 at other places or the same as the thickness t0 of the top plate 10 as required, and two parallel auxiliary ribs 17a are disposed in the recess R to improve the compressive strength of the light-weight grill floor 1 at the middle. For example, since the height h2 of the second rib 12 with respect to the honeycomb side 10b is lower than the height h1 of the first rib 11 with respect to the honeycomb side 10b, when the light grill floor 1 is fixed to a foot stand for an elevated floor, the four feet of the light grill floor 1 are supported by the bottom of the first rib 11.

In addition, the widths d 1-d 7 of the ribs may be the same (e.g., the second to sixth ribs 12-16) or different, as shown in FIG. 1C. For example, the width d1 of the first rib 11 is 8mm, the width d2 of the second rib 12 is 3.8 mm, the width d3 of the third rib 13 is 3.8 mm, the width d4 of the fourth rib 14 is 3.5 mm, the width d5 of the fifth rib 15 is 3.8 mm, the width d6 of the sixth rib 16 is 3.5 mm, and the width d7 of the seventh rib 17 is 5.5 mm.

Further, each rib extends longitudinally or transversely, and the same rib may have different widths at different positions of its extension as required. For example, the widths D1, D7 of the local ribs can be adjusted, such that the widths D1, D7 of the first rib 11 and the seventh rib 17 at two opposite sides of the honeycomb side 10b shown in fig. 1D are smaller, wherein the width D1 of the first rib 11 is 5mm and the width D7 of the seventh rib 17 is 4.5mm, which are respectively smaller than the widths D1, D7 of the first rib 11 and the seventh rib 17 at the middle of the honeycomb side 10b shown in fig. 1C, so as to reduce the weight of the light weight grating floor 1, and the widths D2, D3, D4, D5, D6 of the second, third, fourth, fifth, and sixth ribs 12,13,14,15,16 are not changed.

In addition, a plurality of auxiliary ribs 17a and 18 with a volume much smaller than that of other ribs may be additionally provided to the rib structure 1a as required, as shown in fig. 1C, wherein the heights h0 and h8 (e.g., 8.5 mm) of the auxiliary ribs relative to the honeycomb side 10b are lower than the heights h4 and h6 of the middle rib relative to the honeycomb side 10b, and the width d8 of the auxiliary ribs is 3.2 mm. For example, a plurality of auxiliary ribs 17a,18 are formed in each of the recesses R, S in correspondence with each other, and extend in a single direction without being staggered with each other, and two parallel auxiliary ribs 17a,18 are arranged in a single recess R, S as shown in fig. 1C.

Furthermore, the light-weight grille floor 1 forms a plurality of through holes 100 communicating the ground side 10a and the honeycomb side 10b on the ceiling 10, and divides the honeycomb side 10b into four regions (four corner regions) by the seventh ribs 17 (the vertical and horizontal two seventh ribs 17 form a cross-shaped rib), each region forms 25 sub-regions (corresponding to the position of the recess S), and the cross-shaped ribs extend outward (cross region), and 21 other sub-regions (corresponding to the positions of the recesses R and S) can be formed by spacing a plurality of ribs (the second ribs 12, the third ribs 13, the fourth ribs 14, the fifth ribs 15 and the sixth ribs 16) so that each sub-region has three elongated through holes 100 to form a ventilation volume of 50% or more.

In the present embodiment, the through holes 100 are disposed corresponding to the recesses R and S. For example, three through holes 100 are formed in each of the recesses R, S, and the three through holes 100 are spaced side by side, and the auxiliary ribs 17a,18 separate the through holes 100 in each row; in addition, the recess S between the first and second ribs 11,12 has only one through-hole 100, i.e. no auxiliary rib 18 is provided.

Therefore, the light-weight grid floor 1 not only can increase ventilation amount, but also is beneficial to saving materials and reducing weight and can increase bearing weight by the design of the through holes 100.

In addition, the thickness t0 of the ceiling 10 of the light-weight grating floor 1 is smaller, and the partial heights h4, h6 of the rib structures 1a are also smaller, i.e., the heights h4, h6 of the middle ribs (fourth and sixth ribs 14, 16) are much smaller than the heights h1, h2, h3, h5, h7 of the main ribs (first, second, third, fifth and seventh ribs 11,12,13,15, 17), so as to save materials and reduce weight.

Fig. 2A to 2E are schematic views of a second embodiment of the light-weight grid floor 2 of the present invention. The load of the light weight grating floor 2 of this embodiment is about 700 kg, and the difference from the first embodiment is the change of the local height of the rib structure 2a, so the same will not be described in detail.

As shown in fig. 2A, the bottom of the base 2b is convex (or concave).

In this embodiment, the thickness T0 of the antenna board 20 is 3 mm, the height H1 of the first rib 21 relative to the honeycomb side 20B is 47 mm, the sum T of the height H1 of the first rib 21 relative to the honeycomb side 20B and the thickness T0 of the antenna board 20 is 50 mm, the height H of the foot seat 2B, the height H1 of the first rib 21 relative to the honeycomb side 20B and the thickness T0 of the antenna board 20 is 55 mm, the thickness T1 of the wing board 2d is 10 mm, the first rib 21 is formed at the edge of the antenna board 20 to become the side rib of the light weight grid floor 2, and is used as the frame of the light weight grid floor 2, and the first to sixth ribs 21 to 26 are distributed in a left-right symmetrical manner (or in a vertical symmetrical manner as shown in fig. 2B) based on the seventh rib 27.

In the rib structure 2a, as shown in fig. 2C, the height h2 of the second rib 22 relative to the honeycomb side 20b is 27 mm, the height h3 of the third rib 23 relative to the honeycomb side 20b is 27 mm, the height h5 of the fifth rib 25 relative to the honeycomb side 20b is 27 mm, the height h7 of the seventh rib 27 relative to the honeycomb side 20b is 41 mm, and the heights h4 and h6 of the fourth and sixth ribs 24 and 26 relative to the honeycomb side 20b are 13 mm. On the other hand, the three parallel ribs 27a having a height h0 of 8.5 mm from the honeycomb side 20b are disposed in the recess R to improve the compression strength of the lightweight grid floor 2 at the center. For example, since the height h2 of the second rib 22 with respect to the honeycomb side 20b is lower than the height h1 of the first rib 21 with respect to the honeycomb side 20b, when the light weight grating floor 2 is fixed to a foot rest for an elevated floor, the four feet of the light weight grating floor 2 are supported by the bottom of the first rib 21.

In addition, the widths d 1-d 7 of the ribs may be the same or different as required, as shown in FIG. 2C. For example, the width d1 of the first rib 21 is 8mm, the width d2 of the second rib 22 is 5.2 mm, the width d3 of the third rib 23 is 3.5 mm, the width d4 of the fourth rib 24 is 2.6 mm, the width d5 of the fifth rib 25 is 3.5 mm, the width d6 of the sixth rib 26 is 2.6 mm, and the width d7 of the seventh rib 27 is 5.2 mm.

Further, each rib extends longitudinally or transversely, and the same rib may have different widths at different positions of its extension as required. For example, the widths D1, D7 of the local ribs can be adjusted, as shown in fig. 2D, the widths D1, D7 of the first rib 21 and the seventh rib 27 at two opposite sides of the honeycomb side 20b are smaller, wherein the width D1 of the first rib 21 is 4.8mm and the width D7 of the seventh rib 27 is 4.5mm, which are respectively smaller than the widths D1, D7 of the first rib 21 and the seventh rib 27 at the middle of the honeycomb side 20b shown in fig. 2C, so as to reduce the weight of the light weight grating floor 2, and the widths D2, D3, D4, D5, D6 of the second, third, fourth, fifth and sixth ribs 22,23,24,25,26 are not changed.

In addition, the height h8 of the auxiliary ribs 27a,28 relative to the honeycomb side 20b is lower than the height of the middle rib, and the width d8 is 3 mm, and a plurality of auxiliary ribs 27a,28 are correspondingly formed in the recesses R, S and extend in a single direction without being staggered with each other, as shown in fig. 2C, three parallel auxiliary ribs 27a,28 are disposed in the single recess R, S, so that each sub-region has four elongated through holes 200 to form a ventilation amount of 50% or more.

In this embodiment, the three auxiliary ribs 27a,28 in the recesses R, S are arranged with the highest middle and the lower sides, and the four through holes 200 of each recess R, S are spaced side by side, and the auxiliary ribs 27a,28 separate the rows of through holes 200; in addition, the recess S between the first and second ribs 21,22 has only one perforation 200 (as shown in FIG. 2C) or two perforations 200 (as shown in FIG. 2D).

Therefore, the light-weight grill floor 2 not only can increase ventilation amount, but also can save material and weight and increase bearing weight by the design of the through holes 200.

In addition, the thickness t0 of the ceiling 20 of the light grille floor 2 is smaller, and the heights h4, h6 of the rib structures 2a are also smaller, i.e. the heights h4, h6 of the middle ribs (fourth and sixth ribs 24, 26) are much smaller than the heights h1, h2, h3, h5, h7 of the main ribs (first, second, third, fifth and seventh ribs 21,22,23,25, 27), so as to save material and weight.

To sum up, the utility model discloses a light- duty grid floor 1,2 mainly adopt aluminum alloy integrated into one piece casting through this day board 10,20 and these a plurality of rib structures 1a,2a, and horizontal rib is the same with the arrangement of vertical rib and be the symmetry formula to can not produce the deformation when making this light- duty grid floor 1,2, and be difficult for producing defect and fracture scheduling problem, so compare in prior art, the utility model discloses a light- duty grid floor 1,2 not only the reliability is splendid, and is favorable to promoting the yield and save the cost of manufacture.

Furthermore, the design of the through holes 100 and 200 can form more than 50% of ventilation volume, thereby increasing the ventilation volume, meeting the requirement of higher air return volume around the semiconductor process equipment and in shower rooms and improving the cleanliness of the semiconductor process.

In addition, the height h1, h2, h3, h5, h7 of the main rib of the rib structure 1a,2a relative to the honeycomb side 10b,20b is at least 25 mm to improve the structural strength of the light- weight grating floor 1,2, so that the light- weight grating floor 1,2 can bear heavier machine equipment in a semiconductor process to avoid the problem that the light- weight grating floor 1,2 is broken in use. Furthermore, the height h 1-h 7 and the width d 1-d 7 of the ribs are adjusted according to the load of the light grating floors 1 and 2, thereby saving the materials of the light grating floors 1 and 2 and reducing the weight.

In addition, the structural strength of the light- weight grill floors 1,2 can be further improved by the design of the auxiliary ribs 17a,18,27a, 28.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Those skilled in the art can modify the above embodiments without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be as set forth in the claims.

Claims (12)

1. A lightweight grid flooring, comprising:

an upper plate having a ground side and a honeycomb side opposite to each other, wherein the upper plate has a plurality of through holes formed therein to communicate the ground side with the honeycomb side, thereby forming a ventilation amount of 50% or more; and

a plurality of rib structures, which are integrally cast with the antenna plate by aluminum alloy and are arranged on the honeycomb side of the antenna plate to form a plurality of recesses, so that each recess has three or four through holes, wherein the rib structures are sequentially defined with a first rib, a second rib, a third rib, a fourth rib, a fifth rib, a sixth rib and a seventh rib from the edge of the antenna plate to the middle, the heights of the first rib, the second rib, the third rib, the fifth rib and the seventh rib relative to the honeycomb rib side are at least 25 mm to serve as main ribs, and the heights of the fourth rib and the sixth rib relative to the honeycomb side are lower than 25 mm to serve as middle ribs.

2. The light-weight grid floor of claim 1, wherein the plurality of recesses are arranged in an array to form a honeycomb structure on the honeycomb side.

3. The light-weight grill floor of claim 1, wherein the first rib is formed at the edge of the ceiling to become a side rib of the light-weight grill floor, serving as a rim of the light-weight grill floor.

4. The light-weight grid floor of claim 1, wherein the sum of the height of the first ribs relative to the honeycomb side and the thickness of the top plate is 50 mm, and the thickness of the top plate is 2 to 3 mm.

5. The light-weight grill floor of claim 1, wherein the height of the second, third, fifth and seventh ribs relative to the honeycomb side is 27 to 42 mm, and the width of the second, third, fifth and seventh ribs is 2.6 to 5.5 mm.

6. The light-weight grid floor of claim 1, wherein the height of the fourth and sixth ribs relative to the honeycomb side is 12 to 13 mm.

7. The light-weight grill floor of claim 1, wherein the width of the first rib is 4.8 to 7 mm, and the width of the fourth rib and the sixth rib is 2.6 to 3.5 mm.

8. The light weight grill floor of claim 1, wherein the rib structure forms a # -shaped rib with two seventh ribs in longitudinal and transverse directions to divide the light weight grill floor into four regions, 25 sub-regions are formed between adjacent second, third, fourth, fifth and sixth ribs among the four regions, each of the sub-regions has a recess, and another recess is formed at a central portion of the # -shaped rib formed by the seventh rib, and each of the sub-regions has three or four elongated through holes to form a ventilation amount of more than 50%, and a wing panel is formed around the ceiling panel such that a thickness of the wing panel is greater than a thickness of the ceiling panel.

9. The light-weight grill floor of claim 1, wherein the rib structure further comprises a plurality of auxiliary ribs having a height lower than that of the main rib, and each of the auxiliary ribs is formed in each of the recesses, so that two of the auxiliary ribs are disposed in a single recess.

10. The light-weight grid floor of claim 9, wherein the height of the auxiliary ribs relative to the honeycomb side is at least 8.5 mm and the width is 3 to 3.2 mm.

11. The light-weight grill floor of claim 1, wherein the widths of the first rib and the seventh rib at opposite side portions of the honeycomb side are respectively smaller than the widths of the first rib and the seventh rib at a middle portion of the honeycomb side, so as to reduce the weight of the light-weight grill floor.

12. The light-weight grating floor of claim 1, wherein the first ribs are formed with foot seats at four corners of the light-weight grating floor, the foot seats being fixed to supporting legs.

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