JPH0412198Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a raised floor grating used in computer rooms, communication equipment rooms, electronic parts factories that require precision, etc. A grating with a height adjustment device that can be installed with a height adjustment device that can adjust the height using adjustment bolts, and eliminates the level difference between the gratings when installing the grating in a clean room to create a level floor surface. It is related to.

[Conventional technology]

Raised floor gratings are used in computer rooms, communication equipment rooms, and electronic parts factories that require precision.
A large number of these are laid out and fixed on joists that are supported on support legs that are set up on a concrete floor surface. At this time, the level of the joist is maintained at approximately the same level using screw adjusters provided on the support legs, but if gratings are laid on top of this, it is inevitable that the heights will vary between the gratings. Conventionally, this difference in floor height has not been adjusted, but it is absolutely necessary to adjust this difference in height in order to improve the livability of a clean room with grating. Adjustment of the raised floor using panel materials is done between the floor surface and the panel, that is, on the underside of the panel, so it can only be adjusted at the time of laying the floor material, and it is not possible to adjust the fine height of the floor surface after the floor material is laid. .

[Problem that the invention attempts to solve]

This invention was developed to solve the above-mentioned problems with gratings laid on the raised floors of clean rooms, and when the gratings are laid on the joists of clean rooms, the difference in height can be easily adjusted from above. The purpose of the present invention is to provide a grating with a height adjustment device that can be used to create a precise floor surface with no difference in height.

[Means for solving problems]

The measures taken by the present invention to solve the problems will be explained below with reference to the drawings. As shown in the partially enlarged floor plan view of FIG. 1, the four corners 18a, 18b, 18 of the grating 10
An adjusting device attachment portion 22 surrounded by the main girder 12, a partition plate 20 provided perpendicular thereto, and an end plate 16 is formed at c and 18d. The height adjustment device 32 is the third
As shown in the front view of the figure and the side view of FIG. and a plate-shaped fitting portion 34 equipped with a locking piece 36 that supports the end plate 16 from below.
The height adjustment device 32 is fitted from below and consists of an adjustment nut 42 fixed concentrically with a through hole 40 bored in the center of the fitting part 34, and an adjustment bolt 38 screwed into the adjustment nut 42. .

[Effect]

The operation of the present invention will be explained as follows based on the side view of FIG. Grating 10 to joist 5
0, the lower end of the adjustment bolt 38 of the height adjustment device 32 comes into contact with the upper surface of the joist 50. When this adjustment bolt 38 is screwed in from above, the height adjustment device 32 rises, and the main girder 12 supported by the locking piece 36 is lifted, making it possible to increase the installation height of the grating. Conversely, when the adjustment bolt 38 is unscrewed, the locking piece 36 supporting the main girder 12 is lowered, so that the installation height of the grating can be lowered. Thus, the adjacent 4
It is possible to eliminate height differences at the corners of two gratings. In this state, fix it to the joists with L-shaped bolts as shown in Figure 5.

〔Example〕

Embodiments of the present invention will be described below based on the drawings. Figure 1 is an enlarged partial plan view of the grating floor surface, Figure 2 is an enlarged side sectional view of the main part with the grating installed, Figure 3 is an enlarged partial sectional view of the main part seen from the front, and Figure 4 is the other side. FIG. 5 is an enlarged sectional view of the main parts of the embodiment, FIG. 5 is an enlarged sectional view of the fixing device attachment part of the grating, and FIG. 6 is an assembly diagram of a double floor using the grating.

The grating 10 is a grid-like structure in which a large number of main girders 12 made of plate materials are arranged in parallel at regular intervals, and cross beams 14 made by twisting square beams are welded orthogonally to the main girders. The end plate 16 is welded. The four corners 18a of this grating 10,
18b, 18c, and 18d are provided with partition plates 20 that are perpendicular to the main girder 12 as shown in FIG.
are formed respectively. In this embodiment, the end of one main girder was cut out and the partition plate 20 was attached perpendicularly to the end face thereof, but if the pitch of the main girder 12 is wide, there is no need to cut out the end of the main girder. A partition plate 24 that is orthogonal to the main girder 12 is attached to face the central inner surface of the end plate 16, and a fixture attachment portion 26 that is slightly wider than the corner attachment portions 22 is formed. As shown in FIG. 5, a fixing plate 30 having bolt insertion holes 28 is welded to the inside of the fixture attachment part 26. As shown in FIG.

As shown in FIGS. 2 and 3, the fitting portion 34 of the height adjustment device 32 is formed on the longitudinal side of a rectangular plate whose width is slightly narrower than the distance between the end plate 16 and the partition plate 20 forming the adjustment device mounting portion 22. Bend both sides downward at approximately 90° to a length slightly smaller than the spacing between the main girders 12,
Furthermore, the lower edge is bent horizontally to form a locking piece 36. At the center of the upper surface of the fitting part 34 is a through hole 40 into which the adjustment bolt 38 is inserted.
An adjustment nut 42 concentric with the through hole 40 is fixed to the lower side of the through hole 40. The adjustment bolt 38 has a cut groove 46 for rotation in its head and is screwed into an adjustment nut 42. A locking nut 48 is attached to the adjustment bolt 38.

The assembly of a clean room floor using the grating of this example will be explained as follows. The height adjustment device 32 with the adjustment bolt 38 screwed into the adjustment nut 42 of the fitting part 34 is placed on the four corners 18a, 18b of the grating 10 on the joist 50.
Adjustment device mounting portion 22 provided at 18c and 18d
from below so that the locking piece 36 supports the main girder 12 from below. At that time, adjust bolt 3
The lower end of 8 comes into contact with the upper surface of the joist 50. Next, when a screwdriver is fitted into the cut groove 46 on the head of the adjustment bolt 38 and screwed in, the height adjustment device 32 is raised. Conversely, when the adjustment bolt 38 is unscrewed, the height adjustment device 32 is lowered. Since the main girder 12 of the grating 10 is supported from below by the locking piece 36, the grating 10 can be moved up and down by rotating the adjustment bolt 38, and the height of the gratings can be easily adjusted. can. As shown in FIG. 5, the grating 10 whose height has been aligned in this way is fitted with an L-shaped fixing bolt 52 inserted into the bolt insertion hole 28 of the fixing plate 30 of the fixing device attachment part 26, and the tip thereof is engaged with the joist 50. The grating 10 is fixed to the joist 50 by tightening with nuts 54. The assembly drawing of the double floor using the grating of this example is as shown in Fig. 6, where 56 is a column, 58 is a connecting beam,
60 is bracing.

In this embodiment, the insertion part 3 of the height adjustment device
4 and the locking piece 36 are formed from a single plate material, so machining is easy and materials can be saved.

In this embodiment, the adjusting nut 42 is fixed to the lower side of the fitting part 34, but as shown in FIG. It may be fixed to the upper side of the portion 34. In addition, the locking piece 36 was intended to support the main girder 12, but the locking piece 36 was rotated 90 degrees and the locking piece 36 supported the end plate 12.
and the partition plate 20 may be supported from below.

[Effect of idea]

As explained above, this invention provides mounting parts at the four corners of the grating, and when the grating is laid on the joists, the height adjustment device is inserted from below the mounting part of the grating to adjust the height between the grating and the joists. An adjustment device is attached to the grating, and after the grating is installed, the difference in height between the gratings can be adjusted by turning the adjustment bolt while visually observing the difference in height between the gratings from above. Therefore, the difference in height of the grating can be adjusted with an extremely simple operation compared to the conventional method of adjusting from the bottom of the panel.
Not only does it have excellent effects in terms of ease of work and precision of the floor surface, but it also has the advantage that the structure of the device is much simpler than conventional ones.

[Brief explanation of the drawing]

Fig. 1 is a partial enlarged plan view of the grating floor surface of an embodiment of the present invention, Fig. 2 is an enlarged side sectional view of the main part with the grating installed, and Fig. 3
The figure is an enlarged partial cross-sectional view of the main part seen from the front view, Fig. 4 is an enlarged partial cross-sectional view of the main part showing another embodiment, Fig. 5 is an enlarged cross-sectional view of the grating fixture attachment part, and Fig. 6 is an enlarged cross-sectional view of the main part of the grating. It is an assembly drawing of a double floor using grating. 10... Grating, 12... Main girder, 16...
... End plate, 20 ... Partition plate, 22 ... Adjustment device mounting part, 34 ... Fitting part, 36 ... Locking piece, 38 ...
Adjustment bolt, 42...adjustment nut, 46...cut groove.

Claims (1)

[Scope of utility model registration request] An adjusting device mounting part is formed at the four corners of the grating surrounded by partition plates and end plates provided perpendicular to the main girder, and both sides hang down from the adjusting device mounting part, and the lower ends are extended to both sides to mount the grating. a plate-shaped fitting part equipped with a locking piece that supports the main girder and the main girder or the partition plate and the end plate from below, and an adjustment nut fixed concentrically with a through hole drilled in the fitting part; A grating with a height adjustment device, characterized in that a height adjustment device consisting of an adjustment bolt screwed into the grating is attached.