JP3079430B1 - Fire protection equipment for cable racks - Google Patents

Abstract

A shielding cover body on which a heat insulating material is laid is provided. It is superimposed on the lower surface of the continuous end portion of the shielding cover 1,
A locking member (2) extending upward from between the ends of the shielding cover (1) and locking to the cable rack (P) is provided. The heat insulating material 3 is laid on the upper surface of the shielding cover 1 locked on the cable rack P. The locking body 2 includes a connecting plate 2A and a locking tool 2B. The connection plate 2 </ b> A overlaps the lower surface of the end of the shielding cover 1. The locking tool 2B is erected between the ends of the shielding cover 1 placed on the connecting plate 2A and locked to the parent girder P1 of the cable rack P. [Effect] It is possible to easily perform the work of mounting the fire protection device while maintaining the conventional protection effect. Excellent safety and good appearance.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable rack fire protection system for protecting cables attached to a cable rack from fire.

[0002]

2. Description of the Related Art Applicants have proposed a fire protection device for protecting cables attached to a cable rack from fire.
We have already developed the fire prevention devices described in JP 3130 and JP 4-53131. These devices protect the cables from fire by attaching them to an existing cable rack, and connect a shielding cover on which a heat insulating plate is laid to the lower end of a hook bolt engaged with the cable rack. With these ideas, it is possible to protect the cables on the cable rack from fire, eliminate the possibility that the power supply (emergency power supply) will stop due to the spread of the cable, and reduce the dangers such as the generation of toxic gas during the spread of the cable. The industry's first successful prevention.

[0003]

However, the following problems remain in the conventional fire protection device.

[0004] The first problem is that the load of the heat insulating material makes the work at the time of mounting difficult. That is, the conventional fire prevention device has a structure in which a through hole is provided in the heat insulating plate and the shielding cover, and the lower end of the hook bolt locked to the cable rack is inserted into the through hole and locked with a nut. The board and the shielding cover could not be separately mounted. Therefore, the worker must handle the heat insulating plate and the shielding cover at the same time in a series of operations such as the insertion of the hook bolt and the screwing of the nut to the inserted hook bolt, which makes the installation of the fire prevention device difficult. I was

[0005] The second problem is a safety problem. Since the lower end of the hook bolt that penetrates the heat insulating plate and the shielding cover protrudes significantly, the protruding portion may touch the head. In particular, since the ceiling of a building tends to be lower year by year, it has been necessary to cut off the lower end of the protruding hook bolt after the construction of the fire prevention device.

A third problem is a problem relating to handling of the shielding cover during construction. The shield cover was provided with a flange for a cover at one end, and was connected to an end of the adjacent shield cover where the flange was not provided by overlapping. As a result, directionality occurs when the shielding cover is connected, which hinders efficient work.

Accordingly, the present invention has been made to solve the above-mentioned problems, and it is extremely easy to install a fire prevention device while maintaining the conventional protection effect, and the fire protection for a cable rack is excellent in safety. The purpose is to provide the device.

[0008]

In order to achieve the above object, a first means of the present invention is to provide a fire protection device for a cable rack suspended from a cable rack P, wherein a shielding cover 1 on which a heat insulating material 3 is laid is provided. A locking body 2 that overlaps the lower surface of the adjacent end of the shielding cover 1 and extends upward from between the ends of the shielding cover 1 to be locked to the cable rack P. The body 2 is erected between the connecting plate 2A overlapping the lower surface of the end of the shielding cover 1 and the end of the shielding cover 1 placed on the connecting plate 2A to form the parent girder P1 of the cable rack P. And a connecting piece 2Ba that stands upright on the connecting plate 2A and a steady rest 2Bb that locks on the parent girder P1 of the cable rack P.
And are detachably connected.

The heat insulating material 3 of the second means is dropped and laid on the shielding cover 1 suspended from the cable rack P.

The heat insulating material 3 of the third means is composed of a shielding cover 1
The connection with the locking member 2 together with the locking member 2 is a means for solving the problem.

According to the present invention, the locking member 2 is locked to the cable rack P, and the shielding cover 1 is connected to the locking member 2. At this time, the heat insulating material 3 is dropped and laid on the shielding cover 1 connected to the locking body 2. Alternatively, the heat insulating material 3 is attached to the locking
At the same time.

[0012]

Embodiments of the present invention will be described below in detail with reference to the drawings. The fire prevention device of the present invention includes a shielding cover 1 on which a heat insulating material 3 is laid, and a locking body 2 which suspends the shielding cover 1 on a cable rack P (see FIG. 1).

The shielding cover body 1 mainly lays a plate-like heat insulating material 3, and has a shielding plate 1A disposed below the cable rack P and a bent upward from a longitudinal side edge of the shielding plate 1A. (See FIG. 1). The heat insulating material 3 may be provided along the side plate 1B in addition to being laid on the upper surface of the shielding plate 1A. The heat insulating material 3 is dropped and laid on the shielding plate 1A after the shielding cover body 1 is suspended from the cable rack P. When a lightweight heat insulating material 3 is used, it can be connected to the locking body 2 together with the shielding cover 1.

The locking body 2 suspends the shielding cover 1 on the cable rack P, and locks the connecting plate 2A on the lower surface of the end of the shielding cover 1 and the parent girder P1 of the cable rack P. (See FIG. 3). The illustrated connection plate 2A has a strip shape, and is provided with a connection surface portion 2Aa overlapping with the shielding plate 1A of the shielding cover body 1 and a side surface portion 2Ab overlapping with the side plate 1B of the shielding cover body 1. The end of the shielding plate 1A is placed on the connecting plate 2A, and the side plate 1B of the shielding cover 1 and the side surface 2Ab of the connecting plate 2A are connected by connecting bolts 4 (see FIG. 1). Further, a locking tool 2B is provided so as to be located between the ends of the shielding cover 1 superposed on the connection surface 2Aa (see FIG. 2).

The locking member 2B is a member for suspending the locking body 2 on the cable rack P. In the illustrated example, the locking member 2B is connected to a connecting piece 2Ba standing upright on the connecting plate 2A and the parent girder P1 of the cable rack P. The steady rest 2Bb to be stopped is detachably connected with the connecting bolt 5 (see FIG. 3). This connecting piece 2Ba
Is to fix the bent lower surface of the band plate to the shielding plate 1A by welding or the like, and screw the steady rest 2Bb to the bent upper surface of the connecting piece 2Ba. By using such a locking tool 2B, the shielding cover 1 on which the heat insulating material 3 is laid can be suspended in a stable state. In addition, the connecting piece 2Ba of the locking tool 2B and the anti-sway fitting 2B
The configuration of b can be arbitrarily changed. For example, a slit is formed in the center of the shielding plate 1A (not shown), and a connecting piece 2Ba is inserted from the lower surface of the shielding plate 1A into the slit, or a conventionally used hook bolt 2B Can be used instead of (not shown).

FIG. 2 shows an example of mounting the fire prevention device of the present invention. In this figure, a cable rack P is mounted on a rack base R suspended by suspension bolts Q, and the cable rack P suspends the fire prevention device of the present invention. The mounting operation of the present invention in the illustrated example is as follows. First, the locking body 2 is mounted on the parent girder P1 of the cable rack P. Next, the shielding cover 1 is connected to the locking body 2. Finally, the heat insulating material 3 is inserted between the parent girder P1 of the cable rack P and the shielding cover 1, or between the rack base R and the shielding cover 1, and the heat insulating material 3 is dropped on the shielding plate 1A. The installation is completed with. When using a lightweight heat insulating material 3, the heat insulating material 3
Is connected to the locking body 2 together with the shielding cover body 1 in a state where it is laid.

[0017]

According to the present invention, the above-mentioned configuration achieves the original object.

That is, the shield cover 1 and the heat insulating material 3 can be separately mounted by the shield cover 1 and the locking member 2 according to the first aspect of the present invention. The installation work of the device can be performed very easily. Further, unlike the conventional shield cover, there is no need to provide a flange for the cover at one end, and it is possible to attach the shield cover body 1 without paying attention to the directionality. As a result, the working efficiency can be increased, and the manufacturing cost of the shielding cover 1 can be reduced.

Further, the lower surface of the shielding cover 1 is connected to the connection plate 2A.
So that the lower end of the hook bolt penetrating through the heat insulating plate and the shielding cover does not protrude significantly unlike the conventional fire protection device. Therefore, the danger of the head coming into contact with the protruding portion is eliminated, and safety during use can be improved. In addition, since the connection end of the shielding cover 1 is covered by the connection plate 2A, the appearance is improved.

Further, according to the second aspect, since the respective loads of the heat insulating material 3 and the shielding cover 1 are dispersed and connected separately, the connection work to the locking body 2 is facilitated.

According to the third aspect, even when the heat insulating material 3 and the shielding cover 1 are both connected to the locking body 2, the connection work to the locking body 2 can be easily performed by using the lightweight heat insulating material 3. Can do it.

As described above, according to the present invention, it is easy to mount the fire protection device while maintaining the protection effect thus far.
Various beneficial effects such as excellent safety are exhibited.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a mounted state of a fire prevention device of the present invention.

FIG. 2 is a perspective view showing a use state of the fire prevention device of the present invention.

FIG. 3 is an exploded perspective view showing the fire prevention device of the present invention.

[Explanation of symbols]

 P Cable rack P1 Main girder Q Suspension bolt R Rack gantry 1 Shielding cover 1A Shielding plate 1B Side plate 2 Locking body 2A Connection plate 2Aa Connection surface 2Ab Side surface 2B Locking tool 2Ba Connecting piece 2Bb Sway stopper 3 Heat insulating material 4 Connection Bolt 5 Connecting bolt

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-60-167613 (JP, A) JP-A-59-53007 (JP, A) 86019 (JP, U) Japanese Utility Model Showa 64-34815 (JP, U) Japanese Utility Model Utility Model 1-71914 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) H02G 3/00

Claims (3)

(57) [Claims] 1. A fire protection device for a cable rack suspended from a cable rack, wherein a shielding cover on which a heat insulating material is laid and a lower surface of an adjacent end of the shielding cover are superimposed to form a gap between the ends of the shielding cover. after being extended upward constituted by a locking member for locking the cable racks, the locking body is, shielding
A connecting plate superposed on the lower surface of the end of the shielding cover body, and the connecting plate
Standing between the ends of the shielding cover placed on top
And a locking device for locking to the parent girder of the cable rack.
The locking device consists of a connecting piece standing on the connection plate and a cable rack.
Detachably connect the steady rest to the parent girder
A fire protection device for a cable rack. 2. The fire protection device for a cable rack according to claim 1, wherein the heat insulating material is dropped on a shielding cover suspended from the cable rack. 3. The fire protection device for a cable rack according to claim 1, wherein the heat insulating material is connected to the locking body together with the shielding cover body.