JP2021059907A - Rail mount structure - Google Patents

Abstract

To provide a rail mount structure with which cost is reduced and which can prevent crack of a slab or generation of dusts.SOLUTION: A rail is fitted in and fixed to a groove 3 formed in a concrete slab 2, and a buffer material 15 is interposed between a side wall of the groove 3 and a side wall of the rail 1. A leveling member 4 is installed on a bottom surface of the groove 3, and the rail 1 may be mounted on the top of the leveling member 4.SELECTED DRAWING: Figure 1

Description

The present invention relates to a rail mounting structure for installing a large-scale electronic device such as a server.

Conventionally, in order to install a large-scale electronic device such as a server, a floor panel is placed above a concrete slab via a space, and the electronic device is attached to a rail embedded in the floor panel (non-patent document). 1).
In such a structure, by moving the electronic device along the rail, installation and replacement work becomes easy, and the installation position can be changed according to the dimensions and layout of the electronic device, and the space below the floor panel can be changed. Can be used as an air-conditioning space and a wiring space.

Senxia Co., Ltd. "Senxia Raised Floor System", published in May 2019, p.32-p.36

However, the structure as described in Non-Patent Document 1 requires a floor panel and a support device for supporting the floor panel in a floating state, and its construction is also required, resulting in high cost. In particular, in recent years, the performance of servers and the like has improved, and strict air conditioning is no longer required, so there is an increasing demand for reducing the cost of making a double floor.
An object of the present invention to be solved is to provide a rail mounting structure capable of easily mounting a rail to an existing slab, reducing the cost, and preventing cracking of the slab and generation of dust.

The invention according to claim 1 of the present application is a rail mounting structure for fixing a rail to a slab, in which the rail is fitted and fixed in a groove formed in the slab, and between the side wall of the groove and the side surface of the rail. It is a rail mounting structure characterized in that a cushioning material is interposed in the rail.

The rail mounting structure according to claim 1, wherein a leveling member is installed on the bottom surface of the groove, and the rail is placed on the leveling member. Is.

In the invention according to claim 3, the rail is fixed to the slab via a hole-in anchor composed of a sleeve driven into the slab and an ultra-low head bolt that penetrates the bottom plate of the rail and is screwed into the sleeve. The rail mounting structure according to claim 2, wherein the rail is mounted.

The invention according to claim 4 of the present application is described in any one of claims 1 to 3, wherein the rail is for mounting a server rack and has a groove shape with a lip in cross section. It is a rail mounting structure.

According to the present invention, since it is not necessary to install a floor panel above the slab, the number of parts is reduced, the cost is low, and the rail is embedded in the groove of the slab, so that people and furniture can be moved. It doesn't get in the way and looks good.
In addition, since the cushioning material is interposed between the side wall of the groove and the side surface of the rail, the cushioning material absorbs the vibration caused by an earthquake or the expansion and contraction of the slab, and as a result, the side surface of the rail and the side wall of the groove collide with each other. It is possible to prevent the slab from cracking.
Further, since the cushioning material closes the gap between the groove and the rail, dust does not collect in the groove and dust such as concrete powder does not scatter from the groove to the outside.

In addition, if the rail is placed on the leveling member installed on the bottom of the groove, the depth of the groove can be adjusted according to the height of the rail by changing the thickness of the leveling member. This makes it possible to install the rail stably and horizontally even if the bottom surface of the groove is uneven due to shaving or the like.

In addition, by fixing the rail with a hole-in anchor consisting of a sleeve driven into the slab and an ultra-low head bolt that penetrates the bottom plate of the rail, the protruding part in the rail becomes smaller, and metal fittings etc. slide in the rail. It's hard to get in the way.

In addition, by making the cross-sectional shape of the rail for mounting the server rack a groove shape with a lip, when the mounting bracket that fixes the server rack is engaged inside the rail, the mounting bracket is caught by the lip and does not come off easily. The server rack can be prevented from tipping over.

FIG. 3 is a cross-sectional view of a rail mounting structure showing a first embodiment of the present invention. The plan view of the rail mounting structure which shows the 1st Embodiment of this invention. FIG. 3 is a cross-sectional view of a rail mounting structure showing a second embodiment of the present invention. It is an enlarged cross-sectional view of the main part of a rail mounting structure, (a) shows a second embodiment, and (b) shows a comparative example.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Needless to say, the present invention is not limited to the embodiments.

[First Embodiment]
Hereinafter, the first embodiment of the present invention will be described together with FIGS. 1 and 2.
FIG. 1 is a cross-sectional view of a rail mounting structure showing a first embodiment, and FIG. 2 is a plan view of a rail mounting structure showing a first embodiment.

In the first embodiment, the rail mounting structure is a structure in which the rail 1 for mounting the server rack is fixed to the concrete slab 2.
The rail 1 is for mounting on a server rack, and its cross-sectional shape is a groove shape with a lip. Since the rail 1 is formed by bending a metal plate, the corners of the web 1a and the flange 1b and the corners of the flange 1b and the lip 1c are provided with curved portions that are convexly curved toward the outer surface side. There is.
A groove 3 for fitting the rail 1 is formed on the upper surface of the concrete slab 2. The groove 3 may be formed by punching out a box when the concrete is cast, or may be formed by scraping the concrete after the concrete is cast. The width of the groove 3 is slightly wider than the width of the rail 1 so that the rail 1 can be fitted smoothly.

Since the bottom surface of the groove 3 is made of concrete, there are some irregularities, and in order to adjust the depth of the groove 3 according to the height of the rail 1, the bottom surface of the groove 3 is formed before the rail 1 is fitted. The leveling member 4 is installed. The leveling member 4 may be a plate material or a mortar.
Then, the rail 1 is fitted into the groove 3 with the opening portion of the cross section facing up, the bottom plate (web) of the rail 1 is placed on the leveling member 4, and the rail 1 is fixed to the concrete slab 2 with a hole-in anchor 14. To do.

The hole-in anchor 14 includes a sleeve 11 driven into a concrete slab 2, and an ultra-low head bolt 12 that penetrates the bottom plate of the rail 1 and the leveling member 4 and is screwed into the sleeve 11. Since the head of the ultra-low head bolt 12 is very thin and overlaps the bottom plate of the rail 1 via the thin washer 13, it does not protrude significantly inside the rail 1.
Further, in the rail 1 mounted on the leveling member 4, only the portion above the curved portion of the curved corner portion of the flange 1b and the lip 1c is outside the concrete slab 2 (outside the groove 3). It is exposed. Therefore, even when the casters such as furniture move on the concrete slab 2, they will not be caught. Further, since the upper surface of the rail 1 is located above the upper surface of the concrete slab 2, it is possible to prevent dust on the concrete slab 2 from entering and accumulating in the groove 3.

Since the width of the groove 3 is wider than the width of the rail 1, a gap is opened between the side surface of the rail 1 and the side wall of the groove 3.
In order to close this gap, cushioning materials 15 are interposed between the side walls on both sides of the groove 3 and the side surfaces on both sides of the rail 1. The cushioning material 15 may be made of synthetic rubber, elastic foamed plastic, or the like, and may be formed into a rod shape in advance between the side wall of the groove 3 and the side wall of the rail 1, or may be in a state of having fluidity. It may be filled between the side wall of the groove 3 and the side wall of the rail 1.
When the gap between the side surface of the rail 1 and the side wall of the groove 3 is closed with the cushioning material 15 in this way, dust does not enter and accumulate in the groove 3 and the concrete powder in the groove 3 does not scatter.
Further, the cushioning material 15 absorbs vibration and shrinkage of concrete, and can prevent the side surfaces of the rail 1 and the groove 3 from colliding with each other and cracking the concrete.

To install the server rack on the concrete slab 2, attach the mounting bracket 8 that is slidably and fixedly engaged in the rail 1 to the server rack, and then insert the flange at the bottom of the mounting bracket 8 into the groove of the rail 1. The server rack is moved to the installation position by sliding it in 3, and the mounting bracket 8 is fixed to the rail 1.
At this time, since the head of the ultra-low head bolt 12 does not protrude significantly into the rail 1, it does not interfere with the sliding of the mounting bracket 8.

[Second Embodiment]
Hereinafter, a second embodiment according to the present invention will be described together with FIGS. 3 and 4 of the drawings. The same parts as those in the first embodiment will be omitted, and different parts will be mainly described.

In the second embodiment, the slab comprises a concrete slab 2, a leveling mortar 16 placed on the upper surface of the concrete slab 2, and a finishing mortar 18 placed on the upper surface of the leveling mortar 16.
Further, a metal reinforcing plate 17 is placed on the upper surface of the leveling mortar 16, the reinforcing plate 17 is fixed to the concrete slab 2, and the rail 1 is placed and fixed on the upper surface of the reinforcing plate 17.
The reinforcing plate 17 may be a long plate extending in the longitudinal direction of the rail 1, or may be a short plate arranged at appropriate intervals in the longitudinal direction of the rail 1.
Further, both ends of the reinforcing plate 17 are fixed to the concrete slab 2 with hole-in anchors 14'. The hole-in anchor 14'has the same structure as the hole-in anchor 14 in the first embodiment, but a general bolt is used instead of the ultra-low head bolt.

Further, a screw hole 5 is formed at the rail mounting position of the reinforcing plate 17, and an insertion hole 6 through which a countersunk screw is inserted is formed at a position corresponding to the screw hole 5 on the bottom plate (web) of the rail 1. The insertion hole 6 is shaped so that the head of the countersunk screw 7 can be inserted into the insertion hole 6.
Then, the bottom plate of the rail 1 is placed on the upper surface of the reinforcing plate 17, the screw hole 5 and the insertion hole 6 are aligned, and the countersunk screw 7 is passed through the insertion hole 6 from above the bottom plate of the rail 1 and screwed into the screw hole 5. As a result, the rail 1 is fixed to the concrete slab 2.
Since both the reinforcing plate 17 and the rail 1 are made of metal, the positions and dimensions of the screw holes 5 and the insertion holes 6 can be formed in advance at the factory with high accuracy.
Further, since the upper surface of the bottom plate of the rail 1 and the head of the countersunk screw 7 are substantially flush with each other, the metal fittings do not hinder sliding in the rail 1.

Further, the finishing mortar 18 is placed on the upper surfaces of the leveling mortar 16 and the reinforcing plate 17, and the finishing mortar 18 covers the vertical portions of both side surfaces of the rail 1. That is, the rail 1 is fitted into the groove 3'formed in the finishing mortar 18, and the portion above the curved corner portion of the flange 1b and the lip 1c of the rail 1 protrudes from the groove 3'.
Therefore, as shown in FIG. 4A, the finishing mortar 18 has a uniform thickness in the vicinity of the rail 1, and the upper surface of the rail 1 and the upper surface of the finishing mortar 18 (the upper surface of the slab) are flush with each other. In this case, as shown in [see (b) of FIG. 4], there is no portion (hatched portion) that covers the upper surface of the curved corner portion of the flange 1b and the lip 1c of the rail 1 and gradually becomes thinner. Therefore, there is no concern that the gradually thinning weak portion of the finishing mortar 18 will crack due to the weight of the article passing over it, and the generated dust will adversely affect the server.

[Other variants]
The present invention is not limited to the above embodiments. For example, the following are also included.

In this embodiment, the rail is for mounting a server rack, but may be for mounting other articles.

In the present embodiment, only one rail is installed, but a plurality of rails may be installed in parallel at intervals from each other, and a server rack or the like may be erected between the plurality of rails.

In the first embodiment, a leveling member is installed on the bottom surface of the groove, and the rail is fixed to the concrete slab with a hole-in anchor. However, the leveling member can be omitted, and the rail is grooved with an adhesive. It can also be fixed to the bottom of the.

In the second embodiment, the leveling mortar is placed on the upper surface of the concrete slab and the reinforcing plate is placed on the upper surface of the leveling mortar. However, even if the reinforcing plate is placed directly on the upper surface of the concrete slab. Good.

In the second embodiment, the finishing mortar 18 is directly placed on the side surface of the rail 1, but the present invention is not limited to this. A cushioning material may be interposed as in the first embodiment. In this case, after attaching a cushioning material to the side surface of the rail, the finishing mortar is placed so as to intervene.

Each technical matter in any embodiment may be applied to other embodiments as an embodiment. For example, the countersunk screw 7 in the second embodiment may be applied to the first embodiment. In this case, in the first embodiment, the thin washer 13 is not adopted, and the insertion hole 6 is shaped to match the head of the countersunk screw 7.

1 Rail 1a Web 1b Flange 1c Lip 2 Concrete slab 3, 3'Groove 4 Leveling member 5 Screw hole 6 Insertion hole 7 Flat head screw 8 Mounting bracket 11 Sleeve 12 Extremely low head bolt 13 Washer 14, 14'Hole-in anchor 15 Cushioning Material 16 Leveling mortar 17 Reinforcing plate 18 Finishing mortar

Claims (4)

A rail mounting structure for fixing a rail to a slab, in which the rail is fitted and fixed in a groove formed in the slab, and a cushioning material is interposed between the side wall of the groove and the side surface of the rail. Rail mounting structure featuring. The rail mounting structure according to claim 1, wherein a leveling member is installed on the bottom surface of the groove, and the rail is placed on the leveling member. A claim characterized in that the rail is fixed to the slab via a hole-in anchor including a sleeve driven into the slab and an ultra-low head bolt that penetrates the bottom plate of the rail and is screwed into the sleeve. Item 2. The rail mounting structure according to item 1 or 2. The rail mounting structure according to any one of claims 1 to 3, wherein the rail is for mounting a server rack and has a groove shape with a lip.

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