JPS59170588A - Method and device for hanging composite pipe - 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] - λ - The present invention relates to a method and device for suspending a composite pipe in which an M layer of a fire-resistant inorganic material is formed on the outer peripheral surface of an inner pipe made of synthetic resin, metal, etc. In particular, a device in which a fastening band is wound around the joint between a straight pipe and a joint pipe, which are composite pipes, the fastening band is connected to each joint pipe, and a support is provided to suspend it. It is.

As is well known, in high-rise buildings, composite pipes are used for water supply and drainage pipes, air conditioning pipes, electrical pipes, and various other pipes in order to enhance disaster prevention effects. This composite pipe has a coating layer made of a fire-resistant inorganic material formed on the outer circumferential surface of an inner pipe made of hard vinyl chloride, other synthetic resin, or metal. Materials mixed with various reinforcing materials, aggregates, etc. are often used.

This composite pipe includes long straight pipes, short straight pipes, doglegged pipes,
There are joint pipes that are L-shaped, Y-shaped, T-shaped, and other shapes.

In order to install this composite pipe within the gap between below the floor of the upper story of the building and above the ceiling of the -3 = lower story, the conventional method was to attach textile bands to the straight pipe at appropriate intervals, and to A hanging tool is fixed to the upper surface of the hanging band, and the hanging tool is attached to the lower end of a member whose upper end is fixed to an anchor nut buried in the floor surface.

Therefore, the straight pipe is supported under the floor by a suspension rod, but the joint pipe is not supported at all, but is only held by being connected to the straight pipe.

If the entire connected composite pipe is supported in such a state, the straight pipe has a certain degree of support and fixity, but the joint pipe has almost none. Therefore, if a fire breaks out in a building and the straight pipes and joint pipes heat up and expand thermally, abnormal stress will be applied to the joints, causing the joint pipes to bend or come off the straight pipes, causing the inner pipes to catch fire. If exposed, it will burn and the flame will travel through the inner pipe and spread to other parts of the building.

Also, since the joint pipe is not supported with sufficient strength, if the straight pipe expands or contracts due to vibrations in the building due to earthquakes or temperature differences due to seasonal changes, the connection between the straight pipe and the joint pipe will gradually become loose. After a long period of time, the joint pipe may come off or the pipe may lose its function. This problem cannot be solved satisfactorily even by using a fastening band that spans the joint pipe and the straight pipe at the connection part.

The present invention was proposed in order to solve the above-mentioned conventional drawbacks, and involves winding a fastening band around the connection between each end of a joint pipe and the end of a straight pipe, and wrapping each fastening band around each joint. By integrally connecting and suspending each pipe, not only the straight pipe but also the joint pipe can be firmly supported simultaneously and integrally.

The present invention will be explained below with reference to the embodiments shown in the drawings. In the drawings, the joint pipe is shown as having a dogleg shape. This joint pipe has a coating layer 3 mainly composed of a fire-resistant inorganic material on the outer circumferential surface of an inner pipe made of synthetic resin, metal, etc., and a female part with a slightly enlarged diameter at both ends. It is formed.

On the other hand, the straight pipe fitting connected to each female part q of the above-mentioned joint pipe/ is also provided with a coating layer 7 on the outer peripheral surface of the inner tube 6, and the tip of the inner tube 6 is extended from the coating layer to form a male pipe. It forms a part. Therefore, the male part is fitted into the female part to connect the joint pipe and the straight pipe, but according to the present invention, the joint pipe l
A fastening band 10 is wound around the outer surface of the connecting portion 9 between the pipe and the straight pipe, that is, the joint portion between the end of the coating layer 3 of the joint pipe and the end of the coating layer 7 of the straight pipe. In the embodiment shown in the drawings, this fastening band IO connects two semicircular arc-shaped band pieces // and // with a hinge part at one end so as to be openable and closable, and has an outward facing end at the other end of each band piece //. A flange 13 is provided so that a bolt/lI can be passed through a small hole drilled in each flange/3 and tightened with a nut/j. However, the fastening band 10 may have a structure in which flanges are provided at both ends of two semicircular band pieces, and the flanges where the two band pieces are butted against each other and overlapped are tightened in series with bolts and nuts. .

The above-mentioned fastening band IO is attached to the left and right connecting portions 9 of the joint pipe l.
If the diameter of the straight pipe 5 is smaller than that of the coating layer 3 of the joint pipe l, then the tightening band 10 and the end of the coating layer 7 as shown in FIG. A refractory joint material /6 is loaded between the outer surface and the connecting portion 9 to tightly close it.

According to the present invention, a connecting member 17 is provided in series on the fastening bands θ and io wound around the left and right connecting portions 9 and 9 of the joint pipe.

In the embodiment shown in the drawings, the connecting member 17 is made of a metal material bent into a dogleg shape like the joint pipe, but it may be a straight member. The connecting member /7 is integrally attached to the upper surface of each fastening band IO by welding or bolts, but since the shape of the joint pipe l is determined in advance, the connecting member /7 is also attached to the joint pipe /7. A fastening belt/θ can be installed in advance with a size and shape corresponding to the size and shape.

For example, an upper metal fitting /g is attached to the connecting member /7 formed as described above, the lower end of the hanging rod /9 is fixed to the hanging metal fitting 7g, and the hanging rod /? When the upper end is fixed to the lower surface of the floor surface α of the building, the joint pipe / is the connection part with the straight pipe S at both ends? , q are supported and suspended. In this case, the upper end of the suspension rod /q should be aligned with the floor surface α in advance.
The connecting member /7 may be attached to the lower end of the fixed hanging rod /q via a black metal fitting /g. Further, the connecting member /7 may be suspended below the floor surface α using a wire or the like.

In addition, although the drawing shows a joint pipe/dog-shaped one,
It can be similarly carried out with a short pipe, or with a joint pipe of any shape such as an L-shape, a Y-shape, a T-shape, or any other shape. In the case of joint pipes with different shapes, it is sufficient to use a connecting material according to the shape of the joint pipe, or
If there are more than 3 straight pipe connections, a fastening band corresponding to the number of connections may be attached to the connecting member.

In this way, in the present invention, a fastening band is individually wound around each joint between a joint pipe and a plurality of straight pipes, a connecting member is integrally attached to each fastening band for each joint pipe, and the connecting member is Since the composite pipe of the joint pipe and the straight pipe is lowered integrally (1), the connection between the joint pipe and the straight pipe is firmly tightened, and the entire piping is strong and stable. can be supported.

Therefore, even if a fire breaks out in a building and the straight pipe stretches due to heat, the connection to the joint pipe will not come off or loosen, and the joint pipe will not come off, so the fire protection function will not be reduced. Further, since a plurality of fastening bands are provided on the connecting member and the connecting member is suspended, there is no need for marking each individual fastening band as in the conventional art. Therefore, it is extremely advantageous especially in large-scale piping construction that requires a large number of joint pipes, and it is possible to shorten construction time and reduce construction costs.

Furthermore, since a fastening band is wrapped around the joint between the straight pipe and the joint pipe, not only does the treatment of each joint become reliable, but the band used in conventional straight pipes is no longer required, making it easier to tighten. Since the wear band serves two purposes, its practical value is extremely high.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; FIG. 1 is an exploded perspective view, FIG. 2 is a partially cutaway plan view as seen from above, and FIG. 3 is a vertical sectional view. 9-/...Joint pipe, Y...Straight pipe, C, 6...Inner pipe, 3
゜7...Covering layer? ... Connection part, 10 ... Tightening band, /7 ... Connecting material. Patent applicant Showa Denko Co., Ltd.

Claims (2)

[Claims] (1) Wrap a fastening band around the joint between the straight pipe and the joint pipe, which has a coating layer made of a fire-resistant inorganic material formed on the outer circumferential surface of the inner pipe, and apply a fastening band to each of the joint pipes individually at the plurality of joints. A composite pipe characterized in that wound fastening bands are connected by a connecting member and the connecting member is suspended to support a plurality of connecting portions between a joint pipe and a straight pipe for each joint pipe. How to hang. (2) Consisting of a connecting member and a plurality of fastening bands attached to the connecting member, each fastening band is connected directly to a joint pipe that has a coating layer made of a fire-resistant inorganic material formed on the outer peripheral surface of the inner pipe. A device for suspending a composite pipe, characterized in that it is formed for winding the outer periphery of a connection part with a pipe.