JPH073909A - Construction of light alloy fire proof structure - Google Patents

Abstract

PURPOSE:To simplify the construction process, by fitting stud pins on a deflection proof material made of light alloy and fitting lateral joints thereto while unrolling a rolled heat proof material from one side of a joist structure in which vertical joists are attached on lateral joists. CONSTITUTION:Lateral joists 5 provided with oval holes 12, female screw studs 14, and stud pins 15 are made. Next, the oval hole 12 of the lateral joist 5 is positioned at the stud pin 11 provided at the flange 3 of a deflection proof material 2 and the lateral joist is fixed with washers 16. And vertical joists 6 are fitted on these lateral joists 5 at every required interval with poprivets 17 or the like. Then a rolled-up heat proof material 4 is unrolled on the plane of joists 5, 6 from one end thereof while winding off it in sequence and fixed with spring washers 18, 18'. In this way, no skillful technique is necessary and the fitting work is simplified and the construction period is reduced and the cost is remarkably reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light alloy refractory structure comprising a plate made of a light alloy such as an aluminum alloy and a light alloy stiffener attached to the plate, which is coated with a heat insulating material. In particular, the present invention relates to a construction method for a light alloy refractory structure used for ships.

[0002]

2. Description of the Related Art In recent years, in order to increase the strength of a ship structure, it is common to use a light alloy plate on which a light alloy flexible material called a stiffener or a beam is attached.

Further, from the viewpoint of fire prevention, it is required that the specific bulkheads and decks of ships have fire resistance enough to pass the fire resistance test conducted under the conditions specified by the International Maritime Organization. . These are generally called Class A bulkheads or Class A decks. For this reason, in the ship as described above, a fireproof structure is used in which a partition wall, a deck are made of a light alloy plate, and a heat insulating material is attached to the upper surface of a stiffening material. An example of such a conventionally used refractory structure is shown in FIG. As shown in the figure, the conventional refractory structure includes a rock wool board 22, a ceramic blanket 23, a glass cloth 24, a ceramic blanket 23, in which an aluminum stiffener 21 is welded to an aluminum plate 20 serving as a substrate. Glass cloth 24 and the like are laminated in a plurality of layers and fixed by stud pins 25.

[0004]

However, in such a fireproof structure, since the heat insulating material such as ceramic blanket, rock wool board, glass cloth, etc. is laminated in plural layers, the mounting process is complicated. In addition, due to the increase in the number of processes, there were problems such as a longer construction period and higher labor costs. In addition, since the heat insulating material is provided inside the light alloy stiffener such as an aluminum alloy, the construction process is complicated and the work becomes more difficult.

Therefore, an object of the present invention is to solve the above problems in the prior art by making a stiffener made of a light alloy such as an aluminum alloy or a stiffener made of a light alloy such as a beam, which is made of an aluminum alloy welded. Light alloy stiffeners are used to maintain the fire resistance of a fire-resistant structure consisting of light alloy plates such as plates covered with heat insulating materials such as ceramic blankets, rock wool, glass cloth, etc. Welded joist made of light alloy such as aluminum alloy on top, or fixed with fixing members such as stud bolts, rivets or screws, and then heat insulating material such as ceramic blanket with fixing members such as stud pins. It is to provide a construction method of a light alloy refractory structure to be mounted.

[0006]

In order to achieve the above object, according to the present invention, a light alloy refractory structure is constructed by welding a light alloy plate with a light alloy stiffener. In a light alloy refractory structure that is covered with a heat insulating material, stud pins are welded and mounted on the light alloy stiffening material at the required intervals, and long holes, female thread studs, and stud pins are provided. The horizontal joists composed of the flat bars are attached to the stud pins on the stiffener made of light alloy at intervals with spring washers through the elongated holes, and these lateral roots are provided at required intervals. Attach the vertical joists with female screw studs and stud pins on the joists at a required interval, and unwind the heat insulating material wound in a roll from one side of the joist structure constructed in this way. Stud pin and spry on top of structure It is characterized by comprising attached by Guwassha.

[0007]

According to the construction method of the light alloy refractory structure of the present invention thus constructed, a grid of aluminum alloy or steel is formed on the stiffener made of light alloy such as aluminum alloy. Since the heat insulating material such as a ceramic blanket rolled into a roll is unwound after the joists are attached, it can be attached with a fixing member such as a stud pin, so only the heat insulating material such as a ceramic blanket can be applied and the light alloy protection Since no heat insulating material is applied inside the flexible material, the installation method can be simplified, the construction period can be shortened, the cost can be reduced, and the cost can be greatly reduced, and special skill is required. It can be easily built without.

Other objects, features and advantages of the present invention will become apparent from the following detailed description in conjunction with the accompanying drawings.

[0009]

1 to 8 of the drawings, there is shown a first embodiment of a light alloy refractory structure manufactured by the method for constructing a light alloy refractory structure of the present invention. As shown in FIGS. 1 to 4, a light alloy refractory structure manufactured by the construction method of the present invention is called a class A partition wall and is used as a partition structure of a ship and is a main material. A light alloy plate 1 such as an aluminum alloy plate is welded with a stiffener made of aluminum alloy as a stiffener 2 made of a similar light alloy such as an aluminum alloy, and the surface is a heating side during a fire test. A heat insulating material 4 such as a ceramic blanket wound in a shape is attached and constructed.

In such a light alloy refractory structure, in order to further facilitate the construction of the ceramic blanket as the heat insulating material 4, first, the light alloy stiffening material 2 is clearly shown in FIG. As described above, the threaded stud pins 11 which are a part of the fixing member are welded and attached at a required interval in the vertical direction. Next, as clearly shown in FIGS. 6 and 7, a horizontal joist 5 made of a flat bar made of a light alloy such as an aluminum alloy in which the long hole 12, the female screw stud 14 and the stud pin 15 are provided in advance is prepared. It is preferable to keep it. Such a horizontal joist 5 has the spring washer 16 after the long hole 12 is aligned with the position of the stud pin 11 provided on the flange portion 3 of the light alloy stiffener 2.
Fixed by. This spring washer 16
For example, a hole slightly smaller than the diameter of the stud pin 11 is provided, and a plurality of holes, for example, 4 or 6 holes, are provided around the hole.
A plurality of small radial slits are provided, and the edge of the hole is locked and fixed to the threaded portion of the stud pin 11 by being pushed into the stud pin 11.
In this way, a plurality of horizontal joists 5 are attached to the flange portion 3 of the light alloy stiffener 2 with a required space.
The long hole 12 provided in the lateral joist 5 is a stud pin 11 fixedly provided on the flange portion 3 of the light alloy stiffener 2.
It is possible to adjust so that the position error with respect to can be absorbed. Of course, instead of mounting the horizontal joist 5 on the flange portion 3 of the stiffener made of light alloy 2 made of light alloy by the stud pin 11 and the spring washer 16, the oblong hole is omitted and the horizontal joist 5 itself is made. It can also be attached by welding directly to the manufactured stiffener 2.
Further, it is preferable that the horizontal joists 5 are provided with two female screw studs for each of the joints of the heat insulating material 4 in the vertical direction, as shown in FIGS.

In this way, if the horizontal joists 5 are attached on the flange portion 3 of the light alloy stiffener 2 at the required vertical intervals, the lateral joists 5 are required on the lateral joists 5 at the required lateral intervals. Put a plurality of vertical joists 6 and, for example, pop rivet 1
7 or screws or screws, or by welding or the like. Female thread studs 14 'for attaching the heat insulating material 4 with stud pins 15' are attached to the vertical joists 6, and two left and right seam joints of the heat insulating material 4 are attached to each two as shown in the drawing. It is preferable that four pieces are provided for the upper and lower and left and right joints.

In this way, the horizontal joists 5 and vertical joists 6 made of a light alloy such as aluminum alloy are fixed by welding or female threaded studs 14, 14 'and stud pins 15, 15', or fixing members such as screws. As a result, a flat surface portion for facilitating the attachment and installation of the heat insulating material 4 made of a ceramic blanket is formed. Then, on the horizontal joist 5 and the vertical joist 6 made of such an aluminum alloy, the heat insulating material 4 made of a ceramic blanket wound in a roll shape from one end side is placed on the flat lateral joist 5 and the vertical joist 6. Unwinding in order, and using spring washers 18, 18 'similar to those described above for the female screw studs 14, 14' and the stud pins 15, 15 'planted in the horizontal joist 5 and longitudinal joist 6. Installed. As described above, the heat insulating material 4 such as a ceramic blanket, a rock wool blanket, or a glass cloth is formed on the flange portion of the light alloy stiffening material 2 such as an aluminum alloy by a large number of female screw studs 14 and 14 'and stud pins 15 and 15'. 3 and a horizontal joist 5 and a vertical joist 6 made of light alloy.

Further, FIG. 9 shows a partition structure of a first embodiment of a light alloy refractory structure such as an aluminum alloy manufactured by the construction method of the present invention shown in FIGS. 1 and 2. Another example is shown in which heat insulating materials 4 and 4 ', such as ceramic blankets, are applied on both sides, and in this second embodiment, aluminum, which is the remaining surface in addition to the first embodiment, is shown. A heat insulating material 4'made of a ceramic blanket is fixedly attached to the surface of a light alloy plate 1 such as an alloy plate. The heat insulating material 4 ′ can be attached by a fixing member such as a female screw stud, a stud pin, a spring washer, or the like as in the case of attaching the heat insulating material 4.

A lateral joist 5 attached to a stiffener such as an aluminum alloy or a stiffener made of a light alloy such as a beam 2
To secure the vertical joist 6, pop rivets, female thread studs,
Although stud pins and the like are used, it is needless to say that other suitable fixing members such as welding or screws and bolts can be used. Furthermore, the female screw studs 14, 1
4'may be attached by welding to a horizontal joist 5 made of a flat bar in advance, or an appropriate gun after attaching the lateral joist 5 to the stiffener or beam stiffener 2 made of light alloy. It can be used for hitting, or the stud pin can be welded with a welding gun.

Although the light alloy refractory structure manufactured by the above-described construction method of the present invention has been described as constituting the bulkhead structure of a ship, it is referred to as a class A deck and has a ship deck structure. Of course, it can also be used. Furthermore, the horizontal joists and vertical joists used for the partition structure and deck structure, etc. made by the construction method of the present invention are not limited to light alloys such as aluminum alloys, and it goes without saying that thin steel plates and the like can also be used. .

[0016]

According to the light alloy refractory structure manufactured by the method for constructing the light alloy refractory structure of the present invention having the above-described structure, a light alloy plate such as an aluminum alloy plate can be obtained. In a class A bulkhead structure and class A deck structure formed by welding aluminum and stiffeners made of aluminum alloy or stiffeners made of light alloy such as beams, a light alloy stiffener made of light alloy is formed in a grid pattern on the stiffener made of light alloy. After attaching steel horizontal joists and vertical joists, unwinding a heat insulating material such as a ceramic blanket wound in a roll shape, female screw studs and stud pins, springs on the flat lateral joists and vertical joists. Since it is attached by a fixing member such as a washer, it can be installed easily and in a short time only with a heat insulating material such as a ceramic blanket, and no heat insulating material is applied inside the light alloy stiffener. Together with method of construction is simplified, the construction period can be greatly shortened, cost also enables significant cost reduction can be reduced, special skill technology can be easily mounted without the required all. Furthermore, a light alloy refractory structure such as an aluminum alloy manufactured by the construction method of the present invention satisfies a sufficient fire resistance performance value required for an ordinary standard fire test. .

Further, in the construction method of the light alloy refractory structure of the present invention, the conventional direct attachment method of the class A bulkhead structure and the class A deck structure requires time and labor cost, and the light alloy Compared with the extremely costly fire protection structure of a ship with a structure, the aluminum alloy fire resistant structure of the present invention has a simple construction method and requires a time and labor cost of 1/2 to 1/3. Since it takes time and labor cost, the construction period can be shortened and the cost can be reduced, and by providing a space between the aluminum alloy joist and the aluminum alloy plate, the weight of the ceramic blanket, which is a heat insulating material, can be lightened. The effects such as occurrence can be seen.

[Brief description of drawings]

FIG. 1 is a front view showing a first embodiment of a light alloy refractory structure manufactured by a construction method of the present invention.

FIG. 2 is a plan sectional view of the light alloy refractory structure of FIG.

FIG. 3 is an enlarged partial plan view of the light alloy refractory structure of FIG.

FIG. 4 is an enlarged vertical sectional partial view of the light alloy refractory structure of FIG.

FIG. 5 is a perspective view showing a light alloy stiffener of a light alloy refractory structure manufactured according to the present invention.

FIG. 6 is a perspective view showing a stiffener, a horizontal joist and a vertical heat thick of a light alloy refractory structure manufactured according to the present invention.

7 is an enlarged front partial view showing the light alloy stiffener and the horizontal joists and vertical joists of FIG. 6. FIG.

FIG. 8 is an enlarged partial sectional view showing a female screw stud, a stud pin, and a spring washer of the fixing member used in the present invention.

FIG. 9 is an enlarged partial vertical cross-sectional view showing a second embodiment of a light alloy refractory structure manufactured by the construction method of the present invention.

FIG. 10 is a schematic diagram showing an example of a conventional refractory structure.

[Explanation of symbols]

 1 Light alloy plate 2 Light alloy stiffener 3 Flange part 4 Heat insulating material 5 Horizontal joist 6 Vertical joist 11 Stud pin 12 Long hole 14 Female screw stud 14 'Female screw stud 15 Stud pin 15' Stud pin 16 Spring washer 17 Pop rivet 18 Spring washer 18 'Spring washer 20 Aluminum plate 21 Aluminum heat insulating material 22 Rock wool board 23 Ceramic blanket 24 Glass cloth 25 Stud pin

Front page continued (72) Inventor Nobuaki Araki 5-6-4 Tsukiji, Chuo-ku, Tokyo Mitsui Engineering & Ships Co., Ltd. (72) Inventor Kotaro Iino 1-1 Atsunoura-machi, Nagasaki-shi Nagasaki Shipbuilding Co., Ltd. (72) Inventor Shuji Yoshii 2-5-5 Tsurumi Chuo, Tsurumi-ku, Yokohama-shi, Kanagawa Prefecture

Claims (1)

[Claims] 1. A light alloy stiffener is welded to a light alloy plate,
In a light alloy refractory structure that is coated with a heat insulating material, a stud pin is welded and installed on the light alloy stiffening material at the required intervals, and a long hole, female thread stud, and stud pin are provided. The horizontal joists composed of the flat bars are attached to the stud pins on the stiffener made of light alloy at intervals with spring washers through the elongated holes, and these lateral roots are provided at required intervals. Attach the vertical joists with female screw studs and stud pins on the joists at a required interval, and unwind the heat insulating material wound in a roll from one side of the joist structure constructed in this way. A construction method of a light alloy fireproof structure characterized by being attached to the structure by stud pins and spring washers.