JPS59217085A - Sleeve for sealing clearance between through-hole and penetrating body - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for inserting a penetrating body such as a columnar body or a tubular body into a through hole provided in a building frame such as a ceiling, floor or wall. This invention relates to a sleeve that can easily seal gaps with fire resistance.

Not only high-rise buildings but also ordinary buildings made of cast concrete, or buildings whose floors and ceilings are made of concrete slurry manufactured by the precast method, must be covered with noncombustible materials as necessary. Normally, decorative pillars for supply and waste pipes, water supply and drainage pipes, distribution pipes, etc. are inserted into the hole after the ceiling, floor, wall, etc. with a hole is installed at the desired location, and the top and bottom are fixed. The remaining gap is filled with a hardening or elastic fire-resistant material to prevent the spread of fire, for example, through the ceiling, floor, walls, etc.

Conventionally, when using this method, a sleeve made of paper, plastic, metal, etc. whose inner diameter is larger than the outer tube of the penetrating body is inserted into the ceiling, floor, wall, etc. It is installed in advance at the time of concrete pouring and integrated when the concrete hardens, and after inserting the various penetrating bodies and fixing the upper and lower sides, glass fiber and Cenmeth kneaded material are placed in the gap between the penetrating body and the sleeve. etc. have been filled.

However, these methods naturally have problems with fire resistance when the sleeve is made of paper, and even if any of the sleeves mentioned above is used, the gaps must be filled and fixed with various materials of various thicknesses, which is a complicated process. cannot be avoided.

As a result of intensive studies to eliminate this complicated process, the inventor of the present invention fixed a material having fire resistance and hair-cutting properties to the inner wall surface of a fire-resistant sleeve, preferably in a tubular shape, and adjusted the thickness of the tubular material to the above-mentioned gap. By making the material larger than the above, when a penetrating body is inserted, the gap can be sealed with a considerably high density based on the bursting properties of the tubular material, making it suitable as a fire prevention filler in the event of a fire outbreak. In addition, since it is an elastic wind stop, it exhibits flexibility against vibrations when an earthquake occurs and is suitable for earthquake resistance, and the present invention was completed.

That is, the gist of the present invention is that a fire-resistant elastic material having a thickness larger than the gap between the penetrating body and the sleeve is fixed to the inner wall surface of the fire-resistant sleeve of the penetrating body. The sleeve seals the gap between the through hole and the penetrating body.

The content of the present invention will be described in detail below.

The fireproof sleeve used in the present invention only needs to have a sufficient inner diameter or inner shape to allow insertion of the penetrating body during the insertion and fixing work of the penetrating body, and this depends on the size of the space in the construction site and the obstacles. It is appropriately selected in consideration of the presence or absence of objects, the length of the penetrating body, etc., and pipes made of hydraulic materials such as Portland cement, asbestos pipes, ceramic pipes, metals such as galvanized iron, etc. are preferably used. A fire-resistant elastic material is preferably fixed to the inner wall surface of these fire-resistant sleeves in the form of a tube. Examples of the elastic material include glass fiber, sushi wool,
In addition to welding, inorganic adhesive bonding, and physical bonding methods such as needle punching, more specifically, sheets of these elastic materials are used. For the purpose of the present invention, it is preferable and simple to roll a shaped article into an annular shape and fix it to the inner wall surface of the fire-resistant tubular body with a fire-resistant adhesive such as water glass. In this case, a sufficient sealing effect can be obtained if the elastic material is placed over the entire surface of the inner wall and fixed, but instead of being placed over the entire surface, it may be placed in a spiral shape at desired intervals or scattered over the entire surface. It's okay. These washes only need to be able to compress and expand the generated material when the penetrator is inserted, sufficiently sealing the gap between the penetrator and the fireproof sleeve and preventing the fire from spreading from one side to the other. The manner in which the elasticity is arranged on the inner wall surface of the fireproof sleeve does not limit the present invention in any way.

These elastic materials need to elastically seal the gap as described above, so their thickness needs to be greater than the gap thickness, and the thickness is determined by the elastic material to be sealed. It is selected as appropriate depending on the desired density. The penetrating body is inserted into the center of the resilient material while pressing the material outward from the center.

The sleeve according to the present invention is placed and fixed at a desired location on the ceiling, floor, wall, etc., and the penetrating body is inserted later, but the core of the sleeve and the core of the penetrating body are slightly Even if there is misalignment, the elasticity of the elastic material used in the present invention has the advantage that it does not affect the sealing of the gap, which is convenient for construction.

In addition, compared to conventional construction methods, the sleeve is fixed in advance and the elastic material is fixed to the sleeve in advance, so there is no need for special sleeve fixing or sealing work at the construction site. Just by inserting the penetrating body, the seal can be immediately sealed, eliminating the complicated construction process required in the past.

Next, the present invention will be further explained with reference to Examples.

Figure 1 shows an inner diameter of 135 mm, an outer diameter of 145 mm, and a length of 200 mm.
Fig. 1 shows a refractory sleeve 1 molded with mm cement/lit sand/sand-based mortar.

FIG. 2 shows a cross-sectional view of a gap-sealing sleeve 3 in which a glass fiber mat 2 having a thickness of 5 mm is fixed to the inner surface of the sleeve 1 in a tubular shape with water glass.

FIG. 3 shows a longitudinal sectional view when the sleeve 3 is attached at the same time as the concrete floor 4 is cast.

FIG. 4 shows that the sleeve 3 has a portland cement coating 5.
It is a longitudinal sectional view when a polyvinyl chloride resin pipe 6 (outer diameter 120 mm) is inserted.

It has been found that the glass fiber mat 2, which is made of resilient material, is compressed and presses against the outer surface of the covering 5, which is sufficient to prevent the spread of fire from below the floor 4.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the fireproof sleeve, Fig. 2 is a cross-sectional view of the gap sealing sleeve, Fig. 3 is a longitudinal sectional view of the sleeve installed on the floor, and Fig. 4 is the same as Fig. 3. '141::'lout#I'1 showing a vertical cross-sectional view when the penetrator is inserted into the center of the sleeve. 'l,j℃Meeting name 1 To trump agent Kiku] {? ;)-

Claims (1)

[Claims] A gap between the through hole and the penetrating body, which is formed by fixing a fire-resistant elastic material having a wall thickness greater than the gap between the penetrating body and the sleeve to the inner wall surface of the fire-resistant sleeve of the penetrating body. Sealing sleeve.