JPS6245763B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides walls and
When wiring runs through a floor or the like, it relates to a bus duct unit that is placed at the penetration point.

The duct housing of the bus duct is made of metal plates such as steel plates, so the bus duct itself has heat and fire resistance, but if the gap between the opening edge and the duct housing at the penetration point of the wall or floor etc. is not completely closed. , there is no smoke prevention effect or fire spread prevention effect in the event of a fire outbreak.

Therefore, it is prescribed that the gap between the duct housing and the opening edge be closed with fire resistance.

However, the type of bus duct unit (adhesive insulated bus duct, air insulated bus duct, etc.)
Regardless of the configuration, it is inevitable that some longitudinal grooves will be formed on the outside of the duct housing. For example, in general, there is a pair of left and right side plates 1, 1 which are arranged back to back at a certain interval and have a substantially U-shaped cross section, and a pair of upper and lower surface plates 2 which are substantially U-shaped in cross section and are arranged oppositely above and below the side plates 1, 1. . That is, as shown in FIG. 1, the outer peripheral shape of the duct housing 3 is intricate. Therefore, when inserted through an opening 6 in a wall, floor, etc. 5, the shape of the hole in the partition plate 7 attached to the outer periphery of the duct housing 3 becomes complicated in order to close the gap between the opening edge and the duct housing 3. Filling the gap between the hole edge and the duct housing 3 with the sealing material 16 is troublesome. The same applies to the case where the sealing material is directly filled between the duct housing 3 and the opening edge without using the partition plate.

In addition, parallel to the duct housing 3, a tube such as a metal conduit tube for expansion may be inserted into the opening 6 in advance in preparation for the later installation of additional wiring with electric wire cables, but in this case as well, the bus duct unit As with the case, it is necessary to fill the gap around the spare pipe with a filling material such as mortar to close it, and it is extremely difficult to close the space where the spare pipe penetrates the wall, floor, etc. of the bus duct unit and wiring expansion pipe. It takes a lot of time. Therefore, the finish tends to vary from person to person, and it is difficult to expect a desired smoke-proofing effect and fire-spread preventing effect, which poses a safety problem.

In view of the above points, an object of the present invention is to provide a bus duct unit that is integrated with a spare pipe for wiring expansion and is easy to block and install. In the bus duct unit that accommodates the conductor 4, spare pipes 9, 10, etc. for wiring expansion with both ends temporarily closed are arranged in the groove 8 formed on the outside of the duct housing 3, and The gist is that the sides of the reserve tubes 9, 10 are covered with a plate 11 that closes the space between the curved edges 2', 2', and that the gap around the reserve tubes 9, 10 is filled with a sealing material 12 (shown in the third figure). do.

Figure 2 shows a duct housing 3 in which the present invention is implemented.
3 is a perspective view of a close-contact type insulated bus duct unit having a substantially I-shaped cross section. FIG. A metal round tube 9, a square tube 10, etc. pass through the groove 8 surrounded by the bent side plate 1, the bent edges 1', 2', and the cover plate 11.
A heat-resistant sealing material 12 is filled in the gap around the hole 0 .

The spare pipes 9 and 10 are fixed to the side plate 1 or the cover plate 11 by welding, screwing, or other means.
1 can be fixed to the bent edges 2', 2'. Temporary closure of both ends of the reserve tubes 9 and 10 is achieved by filling with sealing material 13 or by capping or plugging. The cover plate 11 of the embodiment is
Although it covers the entire length of the reserve tubes 9 and 10, it may be short enough to cover only the portion located at the opening 6 in the wall, floor, etc. 5.

Reference numeral 14 denotes a square tube member that is fitted and fixed to the outer periphery of the duct housing 3, and the partition plate 7 is fixed around the square tube member 14. The square tube member 14 and the duct housing 3, and the square tube member 14 and the partition plate 7 are each welded or screwed together. In the case of screw fastening, fill the gap between the two parts to be joined with a heat-resistant sealant.

Both the partition plate 7 and the rectangular tube member 14 may be made of steel plates, and if necessary, a calcium silicate plate 15 may be bonded to the partition plate 7 to improve fire resistance.

Note that when the rectangular tube member 14 is attached as in the illustrated example, both sides of the rectangular tube member 14 are connected to the upper and lower surface plates 2,
Since the cover plate 11 serves as a plate to close the space between the opposing bent edges 2', 2' of the cover plate 11, the cover plate 11 may be omitted.

As described above, the bus duct unit of the present invention has spare pipes 9 and 1 for wiring extension in the duct housing 3.
0 is attached to the bus duct, and when it is inserted and installed through the opening 6 in the wall, floor, etc. 5 as shown in Figure 3, the spare pipe for wiring expansion, which was conventionally installed separately from the bus duct, is installed at the same time as the bus duct, and also integrally. installed in
It saves work time.

Then, with the plate 11 covering the side surfaces of the spare pipes 9, 10 for wiring expansion, the opposing bent edges 2' of the upper and lower plates 2, 2,
2', the cross section of the duct housing 3 is rectangular where the cover plate 11 is located, and there are no irregularities unlike conventional duct housings.

Therefore, the opening edge of the opening 6 and the duct housing 3
It is easy to fill the sealing material when closing the gap between the sealing material and the sealing material, and the amount of sealing material used can be reduced.

Furthermore, when the partition plate 7 is attached via the square tube member 14 as in the embodiment, the square tube member 14 can be made to have the same external shape as the duct housing 3, so manufacturing is simple, and the square tube member 14 and Duct housing 3
The length of filling the sealing material in the gap is shorter than in the case of a conventional I-shaped cross-section duct housing. Also, when the partition plate 7 is directly fixed to the duct housing 3, the length of the sealing material packed is short and the closing process is easy.

Since the gap around the spare pipes 9, 10 in the groove 8 is filled with the sealing material 12 during the assembly stage of the bus duct unit, the space around the spare pipes 9, 10 is filled with the sealing material 12.
Coupled with the fact that both ends of the tube are temporarily closed 13, there are few individual differences in the closing process, and the smoke prevention and fire spread prevention effects are reliable when inserted into the opening 6 of a wall, floor, etc. 5. be.

When additional wiring is installed, the temporary closures 13 at both ends of the spare pipes 9 and 10 are removed and the electric wire cable is passed through, so there is no need to insert new pipes into walls, floors, etc. 5.

The spare pipes 9 and 10 for wiring expansion are arranged in the groove 8 on the outside of the duct housing 3, that is, they are within the external dimensions of the duct housing 3, so they can be used in the shaft room (pipe space) of the building, etc. It also has the effect of making effective use of very narrow spaces.It is a through-hole arrangement that is easy to install and has spare pipes prepared in advance for additional wiring, and can be completely easily blocked to prevent smoke and fire spread. A bus duct unit for installation can be obtained.

The partition plate 7 in the embodiment serves not only to close the gap in the opening 6, but also to position the bus duct unit through the opening 6, and in the case of a stand-up arrangement, serves as a seat for self-supporting, thereby facilitating construction. The means for fixing the partition plate 7 to the wall, floor, etc. 5 may be an adhesive, in addition to anchor pins, anchor bolts, etc. 17 shown in the figure (through an appropriate heat-resistant, fire-resistant, etc. sealing material).

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional plan view showing how a conventional bus duct unit is installed, FIG. 2 is a perspective view of the bus duct unit of the present invention, and FIG. 3 is a cross-sectional plan view showing how the bus duct unit is installed. 1 is the side plate, 2 is the top and bottom plate, 1' and 2' are the bent edges,
3 is a duct housing, 4 is a conductor, 5 is a wall/floor, etc., 6 is an opening, 7 is a partition plate, 8 is a groove, 9, 10
is a spare pipe for wiring expansion, 11 is a cover plate, 12, 13
is a sealing material.

Claims (1)

[Claims] 1. In a bus duct unit that accommodates several phases of strip conductors in the duct housing, a spare pipe for wiring expansion with both ends temporarily closed is placed in the groove formed on the outside of the duct housing, and the upper and lower plates are bent oppositely. A bus duct unit characterized in that a side surface of the spare pipe is covered with a plate that closes the edges, and a gap around the spare pipe is filled with a sealing material.