KR102517215B1 - construction method of fireproof filling structure using cable tray and the cable tray - Google Patents

Abstract

A cable tray is disclosed. The cable tray of the present invention, as a cable tray that is provided to pass through a through hole provided in the floor or wall of a building to securely connect a cable, comprises: a pair of support bars spaced apart from each other; and a plurality of rungs connected between the pair of support bars and spaced apart from each other along the longitudinal direction of the support bars. The plurality of rungs comprises: a plurality of first rungs made of metal; and a fireproof foam rung expanded by heat to shield the inside of the through hole. According to the present invention, the cable tray is made to include a fireproof foam rung that can be expanded by heat, and the cable can be constructed to adhere to the fireproof foam rung using a fireproof foam pad, so, in an actual work site, a worker can easily perform fireproofing construction work to shield the through hole inside a sleeve.

Description

{construction method of fireproof filling structure using cable tray and the cable tray}

The present invention can completely shield the inside of the through-hole (sleeve) when shielding the inside of the through-hole (sleeve) after installing the cable tray to penetrate through the through-hole (sleeve) provided in the floor or wall of the building. It relates to a cable tray and a fireproof filling structure construction method using a cable tray.

With the development of industry, modern architecture is increasing the construction of large-scale and high-rise buildings for the purpose of efficient space utilization and creation of high added value. In the construction of these buildings, the limits of public fire protection are clear, and self-sufficiency of its own fire prevention system becomes an important required performance.

In suppressing a fire, a mechanical solution such as a sprinkler is called an active system, and a method through an architectural solution such as flame retardation, fire prevention division, and fireproof structure is called a passive system. Compared to the active system, the passive system is a more fundamental approach to fire occurrence and suppression, suppressing ignition through building materials, the spread and propagation of fire, and providing a certain amount of time required for evacuation from toxic gas, smoke, and heat. It can be secured to prevent personal injury.

All buildings have electrical and plumbing facilities, and there are through-holes to connect these facilities. The fireproof filling structure is to prevent flames or toxic gases from rapidly spreading to adjacent rooms or floors when a fire breaks out in a building. It serves to prevent the spread of fire through

To elaborate, sleeves are installed to create penetrations for cable tray installation on the floor of each floor during the construction of current high-rise apartments or buildings.

As for these sleeves, an OPEN type sleeve in which cable trays are installed vertically and through and an integral sleeve connected to the cable tray through separate brackets at the top and bottom without the cable tray passing through the top and bottom are applied.

Among them, as shown in FIG. 1, when the cable tray 20 is installed by applying the OPEN type sleeve 10, the cable tray 20 is formed on the wall surface of the channel 30 with a thickness of about 40 mm to 50 mm. Since it is installed in a fixed state, the cable tray 20 is installed through the sleeve 10 in a state of close contact with the rear surface (rear inner surface) of the sleeve 10.

Thereafter, after the operator fixes the cable to the rung 21 of the cable tray 20 and performs cable laying work, a fireproof filling structure is installed using the fire prevention foam 40 in the inner space of the sleeve, as shown in FIG. As described above, due to the close contact between the pair of support bars of the cable tray and the rear inner surface of the sleeve, there is no working space for the fireproof charging structure on the rear side of the cable (working space for installing the fireproof foam).

In other words, the worker installs the fire prevention foam to shield the through-hole inside the sleeve from the front side of the cable. Due to the fact that it is difficult to perform the fire prevention foam installation work on the rear side of the working cable 50.

Republic of Korea Patent Registration No. 10-1984860 (2019.05.31 notice)

The present invention has been made to solve the above-mentioned conventional problems, and after installing a cable tray to pass through a through hole (sleeve) provided in a floor or wall of a building, a worker fireproof filling the through hole (inner region of the sleeve). It is an object of the present invention to provide a cable tray and a method of constructing a fireproof filling structure using a cable tray that can perfectly secure the performance of a fireproof filling structure inside the sleeve, since it is possible to perform the perfect shielding work more easily.

According to one aspect of the present invention, a cable tray provided to pass through a through-hole provided in a floor or wall of a building and fixedly connecting cables, comprising: a pair of support bars spaced apart from each other; and a plurality of rungs connected between the pair of support bars and spaced apart from each other along a longitudinal direction of the support bars, wherein the plurality of rungs include: a plurality of first rungs made of a metal material; and a rung of fireproof foam material capable of shielding an inside of the through-hole by being expanded by heat.

The fireproof foam rung may be detachably coupled to the pair of support bars.

The fireproof foam rung may be provided only in a longitudinal area located inside the sleeve among longitudinal areas of the pair of support bars.

The refractory foam rung may include a refractory foam material rung body connected between the pair of support bars and expandable by heat; and at least one auxiliary cable insertion part integrally provided with the fireproof foam rung main body and having a through hole through which an auxiliary cable passes in a vertical direction.

The refractory foam rung may include a refractory foam material rung body connected between the pair of support bars and expandable by heat; and at least one auxiliary cable insertion portion provided to be detachable from the fireproof foam rung body and provided with a through hole through which auxiliary cables pass in a vertical direction.

The auxiliary cable insertion part may be made of a material expandable by heat in the same way as the fireproof foam rung main body.

The auxiliary cable insertion part may be made of a material having a higher expansion rate when heated than the fireproof foam rung main body.

The auxiliary cable insertion part and the fireproof foam rung main body are coupled to each other by a structure of protrusions and grooves, and the protrusions may be forcibly press-fitted into the grooves.

A plurality of grooves spaced apart from each other may be provided on at least one of both surfaces of the rung of the refractory foam material.

A concave-convex line may be provided in the groove so that a protrusion and a groove structure are provided on one side of the rung of fire-resistant foam material and on the rung portion of the fire-resistant foam material on the other side, respectively, with the groove as the center.

A plurality of insertion protrusions are provided on one side of the refractory foam rung, and a plurality of insertion grooves are provided on the other side thereof, and a plurality of insertion grooves of one refractory foam rung are provided with a plurality of insertion grooves of another rung of refractory foam material. An insertion protrusion may be inserted.

According to another aspect of the present invention, a method for constructing a fireproof filling structure in which a cable tray is installed to pass through a through-hole provided in a floor or wall of a building and then shields an inner region of the through-hole, comprising: (a) penetrating the inside of the through-hole; installing a cable tray according to claim 4 to which a plurality of cables are fixed so as to; and (b) installing a fireproof foam pad inside the through-hole to block or fill the through-hole.

In the step (b), the fireproof foam pad may be compressed and inserted into the through hole, and the fireproof foam pad may press the plurality of cables so that the cables adhere to the fireproof foam rung main body.

In the step (b), the at least one auxiliary cable insertion part may be formed to protrude more than a certain amount in the vertical direction with respect to the fire prevention foam pad.

According to the cable tray and the fireproof filling structure construction method using the cable tray of the present invention described above, the cable tray is made to include a rung of fireproof foam material expandable by heat, and the cable is closely adhered to the rung of fireproof foam material by a fireproof foam pad Since it can be constructed as much as possible, it is possible to facilitate the fireproof construction work for the operator to shield the through-hole inside the sleeve at the actual work site.

That is, even if a worker installs a fireproof foam pad in the through hole of the sleeve on the front region side of the cable, the fireproof foam pad and the fireproof foam material rung surround the cable in the circumferential direction, so that the shielding operation can be perfectly performed.

In addition, since the auxiliary cable insertion portion is provided, the auxiliary cable can be easily installed without disassembly of the fireproof foam pad when additional cable installation is required after the cable installation work and the fire prevention foam pad installation work are completed.

1 is a cross-sectional view showing a fireproof construction structure in a sleeve according to the prior art;
2 is a cross-sectional view showing a state in which fireproof construction is performed in a sleeve using a cable tray according to an embodiment of the present invention;
3 is a front view showing a cable tray according to an embodiment of the present invention;
4 is a perspective view showing a cable tray according to an embodiment of the present invention;
5 is a side view showing a cable tray according to an embodiment of the present invention;
6 and 7 are views showing the process of sequentially constructing a fireproof filling structure using a cable tray according to an embodiment of the present invention;
8 is a plan view after the fireproof filling structure construction method using a cable tray according to an embodiment of the present invention is completed;
9 is a view showing a fireproof foam rung of a cable tray according to another embodiment of the present invention;
10 is a view showing a state in which the fireproof foam rung is cut along the groove in FIG. 9;
11 is a view showing how fireproof foam rungs of a cable tray according to another embodiment of the present invention are connected to each other in the longitudinal direction;
12 is a view showing how fireproof foam rungs of a cable tray according to another embodiment of the present invention are connected to each other in a thickness direction;
13 and 14 are views showing rungs of fire-resistant foam in a cable tray according to another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in more detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in a variety of different forms, only these embodiments will complete the disclosure of the present invention, and will fully cover the scope of the invention to those skilled in the art. It is provided to inform you. Like reference numerals designate like elements in the drawings.

According to a preferred embodiment of the present invention, a cable tray and a method for constructing a fireproof filling structure using a cable tray are installed so as to penetrate a sleeve installed in a through-hole provided in a floor or wall of a building, and then an operator operates the through-hole (inside the sleeve). It provides a structure that can more easily carry out perfect shielding work for fireproof filling of areas) and a fireproof filling structure construction method.

Hereinafter, the present invention will be described in detail with reference to examples.

As shown in FIG. 2, the cable tray 400 according to an embodiment of the present invention is provided to pass through the sleeve 200 installed in the through-hole 100 provided in the floor or wall of a building to fix and connect the cables 300. is to do

In the related drawings, as an example, a case in which the cable tray 400 is installed to pass through the through-hole 100 provided on the floor of the building in the vertical direction is shown, but is not limited thereto, and the cable tray controls the through-hole provided on the wall of the building. It may be installed so as to penetrate in the direction.

In addition, although the case where the sleeve 200 is installed in the through-hole 100 is shown in the related drawings, it is not limited thereto, and the sleeve 200 may not be installed in the through-hole 100, and the cable tray 400 It goes without saying that the sleeve 200 may be installed to pass through the through-hole 100 formed in the floor or wall of a building where the sleeve 200 is not installed.

Hereinafter, for convenience of explanation and illustration, a case in which the sleeve 200 is installed in the through-hole 100 will be illustrated and described.

In general, the sleeve 200 includes an open type sleeve that is opened in the vertical direction so that the cable tray 400 passes through it, and an integral sleeve that is connected through a rail at the top and bottom without the cable tray passing through. In an embodiment of the present invention, the sleeve 200 corresponds to an open type sleeve, the former here.

As shown in FIGS. 3 and 4, the cable tray 400 according to the embodiment of the present invention is spaced apart from each other and between a pair of support bars 410 made of a metal material and a pair of support bars 410. It includes a plurality of rungs 420 connected to each other but spaced apart from each other along the longitudinal direction of the support bar 410.

Here, the plurality of rungs 420 similarly include a plurality of first rungs 421 made of a metal material and a rung 422 of refractory foam material that is expandable by heat to shield the inside of the sleeve 200 .

In the embodiment of the present invention, the refractory foam rung 422 blocks the movement of flame or smoke from one space to the other space through the through hole 100, that is, through the through hole 210 inside the sleeve 200, in the event of a fire. It implements a function that can be used, and will be described in more detail later.

Here, the fireproof foam rung 422 can be installed in a desired area with respect to the longitudinal area of the pair of support bars 410, and as shown in FIG. In order to block the propagation of furnace flame and heat, it may be provided only in the longitudinal region located inside the sleeve 200 among the longitudinal regions of the pair of support bars 410 .

In an embodiment of the present invention, the fire-resistant foam rung 422 is expandable in a direction of closing the through-hole inside the sleeve by fire heat, and may be detachably coupled to the pair of support bars 410. The refractory foam material rung 422 may be made of a heat-expandable material through an injection process.

For example, as shown in FIGS. 3 and 4 , the refractory foam rung 422 may be coupled to the support bar 410 through a screw 430 or the like. Therefore, at the work site, the worker can easily couple the fireproof foam rung 422 to the support bar 410 located inside the sleeve 200, and, if necessary, easily change the coupling position by separating the coupling. there is. However, it is not limited thereto, and the refractory foam rung 422 may be coupled to the support bar 410 through various coupling members such as a Z clip having a Z-shaped structure in addition to the screw 430.

In the related drawings, a case in which the screw head is coupled in a protruding outward state is shown, but is not limited thereto, and the screw head may be inserted into the support bar 410 and coupled in a recessed state, for example Countersunk head screws can be used.

As shown in FIGS. 4 and 5, it is preferable that the rear surface of the rung 422 of refractory foam material be provided in parallel with the rear surface of the support bar 410, and the effective part generated through this will be described later. .

As shown in FIGS. 3 to 5 , the refractory foam rung 422 may include a refractory foam rung main body 424 and an auxiliary cable insertion part 425 .

The refractory foam rung body 424 connects between the pair of support bars 410 and is made of a heat-expandable material.

As shown in FIG. 2, with the refractory foam rung 422 installed inside the sleeve 200, the rear surface of the refractory foam rung main body 424 is preferably installed to contact the inner surface of the sleeve. .

In addition, the auxiliary cable insertion part 425 is integrally provided with the refractory foam rung body 424, and a through hole 426 is provided so that the auxiliary cable 310 passes in the vertical direction, and the refractory foam rung body 424 ) at least one is provided.

The auxiliary cable insertion portion 425 crosses the through-hole 100, that is, the inner through-hole 210 of the sleeve 200, so that the fireproof foam pad 500 blocks the propagation of flame and smoke in the construction method description to be described later. When the installation is completed to close in the opposite direction, in addition to the cable 300 fixed to the cable tray 400, additional auxiliary cables 310 need to be installed without removing and reinstalling the fireproof foam pad 500. are provided to make this possible.

The auxiliary cable insertion part 425 is formed in the form of a hollow tube having a through hole 426 formed therein, and an electric wire, a communication line, etc. as an auxiliary cable may be inserted through the through hole 426. Here, the length of the auxiliary cable insertion part 425 is preferably greater than the height of the fire-resistant foam material rung body 424 so that both ends protrude from both sides of the fire-resistant foam material rung body 424 in the vertical direction by a certain amount or more, respectively. In the state in which the fire prevention foam pad 500 is installed, it is preferable that the upper end of the auxiliary cable insertion part 425 protrudes upward by a certain amount or more with respect to the upper surface of the fire prevention foam pad 500. Accordingly, when necessary, the operator can more easily insert the auxiliary cable 310 into the auxiliary cable insertion part. Related amplified explanations will be described later.

However, it is not limited thereto, and upper and lower ends of the auxiliary cable insertion portion 425 may be provided to correspond to upper and lower ends of the fireproof foam rung body 424 so as not to protrude upward and downward as described above.

In an embodiment of the present invention, for example, the auxiliary cable insertion portion 425 may be made of the same material as the fireproof foam rung body 424 and may be integrally injected. The auxiliary cable insertion part 425 has a through hole 426 formed therein, so if the through hole is not closed, there is a problem in that it functions as a propagation path for flame and smoke in the event of a fire. As it is made of a material expandable by heat in the same way as the material rung body 424, it is expanded by fire heat and the through hole 426 can be closed to block the propagation of flame and smoke.

As another example, the auxiliary cable insertion portion 425 is made of a material with a higher expansion rate when heated than the refractory foam rung body 424, but is forced to press-fit with the refractory foam rung body 424, adhesive, separate fastening member, etc. It may be made integrally connected. Further explanation is provided below.

In other words, the auxiliary cable insertion portion 425 may be made of expanded graphite and an inorganic filler to have higher expandability than the refractory foam rung body 424 when heated. As the inorganic filler, aluminum hydroxide (Al(OH) 3 ), magnesium hydroxide (Mg(OH) 2 ) and the like may be used. For example, when the expansion rate of the refractory foam rung body 424 is approximately 100%, the auxiliary cable insertion portion 425 may expand approximately 5 times (500%). As the auxiliary cable insertion portion 425 is made to have a relatively high expansion rate compared to the refractory foam rung body 424, even when the diameter of the through hole 426 is formed larger than a certain amount, the heat generated by the fire By expanding to shield a wider area, the penetration hole can be easily closed and sealed to prevent the propagation of flame and smoke.

Hereinafter, a fireproof filling structure construction method using a cable tray according to an embodiment of the present invention will be described.

As shown in FIGS. 6 and 7, the fireproof filling structure construction method (hereinafter referred to as 'fireproof filling structure construction method') using a cable tray according to an embodiment of the present invention is a through hole (100) provided in the floor or wall of a building. After installing the cable tray 400 to pass through the through hole 210 of the sleeve 200 installed in the sleeve 200, the inner through hole 210 of the sleeve 200 is shielded so that a fire occurs from one area to the other area based on the sleeve. It is a method to block the propagation of flames and smoke caused by

The method for constructing a fireproof filling structure according to an embodiment of the present invention includes a cable tray installation step (S100) and a fireproof foam pad installation step (S200).

First, as shown in FIG. 6, a cable tray 400 to which a plurality of cables 300 are fixed is installed so as to pass through the inside of the sleeve 200 in the vertical direction (S100). To elaborate, first, the cable tray 400 composed of the support bar 410 and the plurality of rungs 420 is inserted through and then the cables 300 such as electric lines and communication lines are fixed to the cable tray 400. The cable can be fixed to the rung of the cable tray through a cable tie or the like. Here, the cables are first installed on the cable tray and then fixed to the cable tray through cable ties or the like.

Meanwhile, in step S100, the refractory foam rung 422 may be first coupled to the support bar 410 at an appropriate position before inserting the cable tray 400 into the sleeve, and the refractory foam rung 422 is coupled The cable tray 400 may be inserted into the sleeve.

In addition, unlike this, the cable tray to which the fire-resistant foam rung 422 is not coupled is first inserted into the sleeve, and then a screw, Z The refractory foam material rung 422 may be coupled using various fastening members such as a Z clip having a cross-sectional shape.

When the cable tray 400 is installed, the cable 300 is fixed to the first rung 421 through a cable tie, and the rear part of the cable contacts the front surface of the fireproof foam rung 422 or bends the cable. It may have a state of being spaced apart by a certain amount or more by means of the like.

To this end, in particular, as shown in FIG. 7, in order to bring the rear part of the cable into close contact with the front surface of the fire-resistant foam rung 422 through the installation of the fire-resistant foam pad 500 described later, The thickness of the material rung 422 is preferably provided to be substantially the same as that of the first rung 421, and may be numerically 10 to 30 mm.

Next, as shown in FIG. 7, a fire prevention foam pad 500 is installed inside the sleeve 200 to block the through hole 100, that is, the inner region of the sleeve 200 (S200). Specifically, the fire prevention foam pad 500 is inserted into the through hole of the sleeve in a state where the cable 300 and the auxiliary cable insertion part 425 disposed in the through hole 100 do not interfere with the installation work of the fire prevention foam pad 500. 210 to cover (seal) the through hole 210 with the fire prevention foam pad 500 or fill the entire inside of the through hole 210 with the fire prevention foam pad 500. In the related drawings, as an example, a case in which the fireproof foam pad 500 is provided to cover the upper portion of the through hole 210 is shown, but as described above, the entire through hole 210 may be filled.

The fireproof foam pad 500 substantially shields the through hole 210, and is interfered by the cable 300 and the auxiliary cable insertion part 425 disposed in the through hole 210 to cover the through hole 210 as a whole. It should be done so that unshielded situations do not occur.

To this end, in the embodiment of the present invention, the fire prevention foam pad 500 may be formed in a form having a certain level of flexibility and may have a form such as a sponge, for example, and is inserted into the through hole 210 in a compressed state. The through hole is securely shielded. The fireproof foam pad 500 is a fireproof filling structure and has a property of expanding to the surroundings when the temperature rises when a fire occurs along with the fireproof foam material rungs 422 .

In other words, when a fire occurs in a space on one side of the floor or wall where the sleeve 200 is provided, the fireproof foam pad 500 receives heat and expands to more firmly close the through hole 100. By maintaining it, it is possible to prevent flame and smoke from spreading to the other side space. The fireproof foam pad 500 has characteristics of a shape and structure that are elastically contracted when a worker applies a compressive force above a certain level.

After the fire prevention foam pad 500 is installed to cover or fill the through hole 100, a fire resistant sealant (not shown) may be provided between the fire prevention foam pad 500 and the inner surface of the sleeve 200.

As such, the fireproof foam pad 500 has elastic compression and restoration characteristics above a certain level, so that the penetration hole 100 cannot be partially closed due to interference by the cable 300 and the auxiliary cable insertion portion 425. It can be closed reliably as a whole without

In the embodiment of the present invention, in step S200, as shown in FIG. 7, the operator compresses the fire prevention foam pad 500 and inserts it into the sleeve 200, and the fire prevention foam pad 500 has a plurality of cables ( 300) is pressed backward so that the rear side of the cable 300 adheres to the fireproof foam rung body 424.

In addition, as shown in FIGS. 5, 7 and 8, the rear surface of the refractory foam rung 422, specifically, the refractory foam rung body 424 is parallel to the rear surface of the support bar 410 As described above, as the cable 300 is in close contact with the fireproof foam rung body 424 by the fireproof foam pad 500, the fireproof foam pad 500 and the fireproof foam rung 422 It is installed in a form that wraps the cables 300 in the circumferential direction while being in close contact with the plurality of cables 300 .

By this installation, the fire resistant foam pad 500 and the fire resistant foam rung 422 completely shield the through hole of the sleeve 200 without interference by cables, thereby surely blocking the propagation of flame and smoke.

In addition, since both the fireproof foam pad 500 and the fireproof foam rung 422 are made of materials expandable by heat, in the event of a fire, both the fireproof foam pad 500 and the fireproof foam rung 422 expand in all directions. . According to this expansion, even if there is a certain or more gap between the rear surface (back surface) of the rung 422 of the refractory foam material and the inner surface of the through-hole 100 or the inner surface of the sleeve 200, even in the initial state before the fire occurs, fire refractory foaming Due to the expansion of the ash rung 422, this gap is filled with the refractory foam material rung. In addition, as the fireproof foam rung 422 expands in the lateral direction (front) of the cable 300 and the fireproof foam pad 500 also expands toward the cable 300, the cable 300 and the fireproof foam pad 500 and No gaps are generated between the rungs 422 of the refractory foam material, and a reliable shielding effect is generated by the refractory foam material.

In addition, in step S200, at least one auxiliary cable insertion part 425 is formed in a form protruding more than a certain amount in the vertical direction with respect to the fire prevention foam pad 500, and accordingly, additional installation of the auxiliary cable 310 is required. In this case, the operator can easily insert the auxiliary cable 310 from the upper side to the lower side or from the lower side to the upper side. On the other hand, if additional installation of the auxiliary cable 310 is not required, apply a fireproof sealant to the opening of the auxiliary cable insertion part 425, block the insertion hole of the auxiliary cable insertion part with a fireproof sealant, or combine a rubber cap, etc. can stop

Hereinafter, a cable tray according to another embodiment of the present invention will be described, and redundant description of the same configuration as the above embodiment will be omitted.

As shown in FIGS. 9 to 12, other embodiments of the present invention are different from the above-described embodiment in the structure of the refractory foam rung 1422, and other parts are equally applicable.

The distance between the pair of support bars 410 (see FIGS. 3 and 4) of the cable tray has various lengths according to cable tray standards. In another embodiment of the present invention, the refractory foam rung 1422 has a structure in which the length can be easily adjusted in response to a change in the distance between the pair of support bars 410 as described above.

That is, the operator appropriately adjusts the length of the fireproof foam rung 1422 to correspond to the distance between the pair of support bars 410 of the cable tray to be installed at the current work site, and then connects it to the support bar 410 and can be used.

Specifically, a plurality of grooves 1450 spaced apart from each other may be provided on at least one of both surfaces of the rung 1422 of the refractory foam material. A plurality of grooves 1450 are spaced apart from each other in the longitudinal direction of the refractory foam rung 1422 and extend in the width direction, and a worker selects an appropriate groove among the plurality of grooves 1450 using tools such as scissors and a knife. It can be used by cutting the refractory foam material rung 1422 along. For example, the worker may use the cut (cut) rungs 1422 of fireproof foam to correspond to the distance between a pair of support bars of the cable tray to be used.

On the other hand, a situation may occur in which at least two rungs 1422 of refractory foam material must be connected to each other between a pair of support bars 410, and in this case, efficient coupling between at least two rungs 1422 of refractory foam material For this, the following structure is added.

Specifically, a concave-convex line 1451 may be provided in the groove 1450 so that two or more rungs 1422 of refractory foam to be connected to each other can be coupled to each other through a protrusion and groove structure. When cut along the uneven line 1451, a protrusion 1460 and a groove 1470 structure are provided at the end of one of the refractory foam rungs 1422, and another refractory foam rung coupled thereto is similarly formed. A protrusion and groove structure are also provided at the end of 1422, and they can be efficiently coupled (connected) to each other through the protrusion and groove structure.

In an embodiment of the present invention, the two rungs 1422 of refractory foam material may be connected to each other through forced press-fitting through protrusions and groove structures. In addition, the two rungs 1422 of refractory foam material may be connected to each other after applying an adhesive to the sides of the protrusions and grooves that come into contact with each other. Through the connection through the protrusion and groove structure in this way, the coupling force between the two rungs 1422 of fireproof foam material can be further increased.

Meanwhile, in FIG. 2, the rear surface of the refractory foam rung 1422 is shown in contact with the inner surface of the sleeve 200. Between the side and the inner surface of the sleeve 200 or the through-hole 100 may not contact each other as shown in FIG. 2 and a certain or more gap may occur.

To prevent the occurrence of such a gap, that is, to increase the installation thickness of the fire-resistant foam rung installed inside the through-hole 100, as shown in FIGS. 9 and 12, the fire-resistant foam rung 1422 A plurality of insertion protrusions 1480 and insertion grooves 1490 are provided.

For example, a plurality of insertion protrusions 1480 may be provided on the front surface of the rung 1422 of refractory foam material, and a plurality of insertion grooves 1490 may be provided on the rear surface. When a gap occurs as described above, the operator can prevent the above-mentioned gap from occurring by overlapping and connecting one fireproof foam material rung 1422 to another fireproof foam material rung 1422 in the thickness direction. can

At this time, at least two or more fireproof foam rungs 1422 connected in the thickness direction are connected to each other through an insertion projection 1480 and an insertion groove 1490 structure, and the insertion projection 1480 is inserted into the insertion groove 1490. can be forced in.

Hereinafter, a cable tray according to another embodiment of the present invention will be described, and redundant description of the same configuration as the above embodiment will be omitted.

As shown in FIG. 13, another embodiment of the present invention is different from the above-described embodiment in the structure of the refractory foam rung 1522, and other parts are equally applicable.

In another embodiment of the present invention, the refractory foam rung 1522 is coupled to each other through a protrusion and groove structure after the refractory foam rung body 1525 and the auxiliary cable insertion portion 1526 are individually injected. can

Specifically, as shown in FIG. 13, a plurality of insertion protrusions 1510 are provided in the auxiliary cable insertion part 1526, and a plurality of insertion protrusions 1510 are inserted into the refractory foam rung body 1525 so that the insertion protrusions 1510 can be inserted. A groove 1520 is provided. Here, the insertion protrusion 1510 may be fixed to the insertion groove 1520 through forced press-fitting, or may be inserted and adhered after applying an adhesive to the surface. However, the former forced press-fixing method has a much more advantageous advantage for rapid work at the actual work site.

In addition, FIG. 13 shows that five rows of insertion grooves 1520 are formed in the fireproof foam rung body 1525, and an auxiliary cable insertion part 1526 having a three-row structure is coupled thereto, and the remaining two rows are inserted The auxiliary cable insertion part 1526 is not separately coupled to the groove 1520, but if the auxiliary cable insertion part 1526 needs to be additionally mounted later, the insertion protrusion of the auxiliary cable insertion part can be inserted into the two rows of insertion grooves.

To this end, as shown in FIG. 14, for example, the auxiliary cable insertion part 1526 is injection-molded in a five-row structure, and, if necessary, an appropriate part along the longitudinal direction is cut using industrial scissors, a knife, etc. By separating, auxiliary cable insertion parts 1526 having an appropriate number of rows can be used by being coupled to the fireproof foam rung body 1525.

Here, the auxiliary cable insertion part 1526 is made of a material having a higher expansion rate when heated than the refractory foam rung body 1525, and the effects generated therefrom have been described above and will be omitted below.

In the above, the present invention has been shown and described in relation to preferred embodiments for illustrating the principles of the present invention, but the present invention is not limited to the configuration and operation as shown and described. Rather, it will be appreciated by those skilled in the art that many changes and modifications may be made to the present invention without departing from the spirit and scope of the appended claims.

10: sleeve 20: cable tray
30: channel 40: fire prevention foam
50: cable 100: through hole
200: sleeve 210: through hole
300: cable 310: auxiliary cable
400: cable tray 410: support bar
420: rung 421: first rung
422: fireproof foam rung 424: fireproof foam rung body
425: auxiliary cable insertion part 500: fireproof foam pad
510: fireproof foam pad body 520: first opening
530: second opening 1422: fireproof foam rung
1450: groove 1451: uneven line
1460 protrusion 1470 groove
1480: insertion protrusion 1490: insertion groove
1510: insertion protrusion 1520: insertion groove

Claims (14)

A cable tray provided to pass through a through-hole provided in the floor or wall of a building and fixedly connecting cables,
A pair of support bars spaced apart from each other; and
Including a plurality of rungs connected between the pair of support bars but spaced apart from each other along the longitudinal direction of the support bars,
The plurality of rungs,
a plurality of first rungs made of a metal material; and
It includes a rung of fireproof foam material that can be expanded by heat to shield the inside of the through hole,
At least one of both surfaces of the refractory foam rung is provided with a plurality of grooves spaced apart from each other in the longitudinal direction of the refractory foam rung and extending from one side to the other side in the width direction, and the refractory foam rung along the groove It can be separated by cutting in the width direction,
A plurality of rungs of refractory foam material separated from each other by being cut in the width direction by providing a concave-convex line in the groove so that protrusions and groove structures are provided on one side of the refractory foam rung and the other side of the refractory foam rung with the groove as the center, respectively. The parts are press-fitted to each other through the protrusion and groove structure to be connected to each other,
A plurality of insertion protrusions are provided on one surface of the refractory foam rung, and a plurality of insertion grooves are provided on the other surface,
A plurality of insertion protrusions of another fire-resistant foam rung are inserted into a plurality of insertion grooves of one rung of fire-resistant foam material, and one rung of fire-resistant foam material is overlapped with another rung of fire-resistant foam material in the thickness direction. A cable tray characterized in that the thickness of the fireproof foam rung can be increased. According to claim 1,
The cable tray, characterized in that the fire-resistant foam rung is detachably coupled to the pair of support bars. According to claim 1,
The pair of support bars and the plurality of rungs are provided to pass through a sleeve installed in the through hole,
The fire-resistant foam rung is provided only in a longitudinal region located inside the sleeve among longitudinal regions of the pair of support bars. According to claim 1,
The fireproof foam rung,
a fireproof foam rung main body connected between the pair of support bars and expandable by heat; and
The cable tray comprising at least one auxiliary cable insertion part integrally provided with the fireproof foam rung body and having a through hole through which auxiliary cables pass in a vertical direction. According to claim 1,
The fireproof foam rung,
a fireproof foam rung main body connected between the pair of support bars and expandable by heat; and
The cable tray characterized in that it comprises at least one auxiliary cable insertion portion provided to be detachable from the fireproof foam rung body and provided with a through hole through which auxiliary cables pass in a vertical direction. According to claim 4 or 5,
The cable tray, characterized in that the auxiliary cable insertion portion is made of a material expandable by heat in the same way as the fireproof foam rung body. According to claim 4 or 5,
The cable tray, characterized in that the auxiliary cable insertion portion is made of a material having a higher expansion rate when heated than the fireproof foam rung body. According to claim 5,
The cable tray according to claim 1, wherein the auxiliary cable insertion part and the fireproof foam rung body are coupled to each other by a protrusion and a groove structure, and the protrusion can be forcibly press-fitted into the groove. delete delete delete A method of constructing a fireproof filling structure in which a cable tray is installed to pass through a through hole provided in a floor or wall of a building and then shield an inner region of the through hole,
(a) installing a cable tray according to claim 4 or 5 to which a plurality of cables are fixed to pass through the through hole; and
(b) A fireproof filling structure construction method using a cable tray comprising the step of installing a fireproof foam pad inside the through-hole to block or fill the through-hole. According to claim 12,
In step (b),
The fireproof foam pad is compressed and inserted into the through hole, and the fireproof foam pad presses the plurality of cables so that the cables adhere to the fireproof foam material rung body Fireproof filling using a cable tray, characterized in that Structure construction method. According to claim 12,
In step (b),
The fireproof filling structure construction method using a cable tray, characterized in that the at least one auxiliary cable insertion portion is formed in a form protruding more than a certain amount in the vertical direction with respect to the fireproof foam pad.

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