JP2001208248A - Fire hose - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fire hose further reducing the flow resistance of the internal circumferential face and further improving the abrasion resistance of the outer circumferential face. SOLUTION: This fire hose is constituted of a cylindrical fabric 11 of a warp 1 arranged in the longitudinal direction of the hose and a weft 2 (2a, 2b) crossed to the warp 1 as circumferentially and spirally winding around. The warp 1 is made to pass through the outside and inside of the weft 2 (2a, 2b) like the 2/2, 3/3, and it has such a structure that the weft is covered so as not to be exposed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire hose, and more particularly to a fire hose for reducing the flow resistance on the inner surface.
The present invention relates to a fire hose with improved outer surface wear resistance.

[0002]

2. Description of the Related Art In general, a fire hose has a tubular fabric woven from a warp yarn and a weft yarn as a main structure, and is formed by coating a resin layer on the inner surface and / or outer surface of the tubular fabric as necessary. . One of the required characteristics of such a fire hose is to increase the water supply amount per unit time without changing the hose diameter. Also, the wear resistance may be improved by reducing the frictional resistance when the hose is pulled out from the reel or when the hose is dragged left and right on the ground.

[0003] However, in the conventional fire hose, since the plain weave which is advantageous to increase the fabric density is adopted as the structure of the tubular fabric, the flow resistance on the inner surface is reduced as described above, There is a limit in improving the abrasion resistance of the steel, and it has been almost impossible to greatly improve the current level.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems, to further reduce the flow resistance of the inner surface, and to further improve the wear resistance of the outer surface. To provide a hose.

[0005]

The fire hose of the present invention, which achieves the above object, comprises a warp yarn arranged in the longitudinal direction of the hose and a crosswise spiral wound around the warp yarn in the circumferential direction. In a fire hose comprising a tubular woven fabric made of the weft thread and the warp thread, the warp thread is passed through the outside and inside of the weft thread in 2/2 or 3/3, and the weft thread is not exposed. Characterized by being coated with

[0006] As described above, since the warp yarn is passed through the outer and inner sides of the weft yarn at 2/2 or 3/3, the warp yarns are respectively formed on the outer surface and the inner surface of the tubular fabric. Since it is in a state of being protruded long in the longitudinal direction and being covered without exposing the weft yarn, the inner and outer surfaces of the tubular fabric are less changed in unevenness and the smoothness is increased. Therefore, the flow resistance of the inner surface of the hose when water is supplied is reduced, and the outer surface reduces the sliding resistance when the hose is pulled out from the reel or when the hose is dragged left and right on the ground, and the wear resistance is improved. .

[0007]

FIG. 1 is a longitudinal sectional view of an essential part showing an example of a fire hose of the present invention.

The fire hose 10 is formed as a so-called shape-retaining hose, and is always held in a cylindrical shape. The main hose structure of the fire hose 10 is made of a tubular fabric 11, and its inner and outer surfaces are coated with thin resin layers 12, 13, respectively. Tubular fabric 11
Is a number of warp yarns 1 extending parallel to the longitudinal direction of the hose.
And a weft yarn 2 that is spirally wound around the warp yarn 1 in a circumferential direction and intersects.

The weft yarn 2 has two types of synthetic polymer monofilament 2a and synthetic fiber multifilament yarn 2b inserted therein, and is spirally wound around the tubular fabric 11 in parallel with each other. Of the two types of weft yarn, the monofilament 2a has a higher rigidity than the multifilament yarn 2b, and thus serves to keep the hose in a tubular shape.

As the weft yarn 2, only a monofilament 2a for keeping the shape is provided, and a multifilament yarn 2b is provided.
May be omitted. Further, the synthetic fiber multifilament yarn 2b may be replaced with a spun yarn.

On the other hand, as shown in FIG. 1, the warp yarn 1 is provided with two cross points alternately on the outside and the inside of the weft yarn 2 (2a, 2b), as shown in FIG. Threaded. Further, as shown in the fabric structure diagram of FIG. 3, the warp yarns adjacent in the weft direction are arranged such that the 2/2 threading crossing point is shifted by one structure point in the warp yarn direction. I have to. Further, the plurality of warp yarns 1 are inserted so as to be in close contact with each other at a high density, and the weft yarns 2 are completely covered with the warp yarns 1 on both the outer surface and the inner surface of the tubular fabric 11 and are not exposed to the outside. State (see FIG. 2).

In the structure diagram of FIG. 3, hatched structure points indicate the case where the warp yarn floats, and white outline points indicate the case where the weft yarn floats. Therefore, the warp yarn 1 is 2/2 outside and inside with respect to the weft yarn 2.
When the thread is passed through in the longitudinal direction of the tubular fabric 11,
Are arranged in a protruding state for a long time. In addition, since the weft yarn 2 is made to be in a densely covered state so as not to be exposed, both the inner and outer surfaces of the tubular fabric 11 increase the smoothness with little unevenness at least in the longitudinal direction. As described above, the inner surface and the outer surface of the tubular fabric 11 increase the smoothness. As a result, the inner surface has a reduced flow resistance when water is supplied to the fire-fighting waterproofing, and the outer surface has a reduced sliding resistance when the hose is pulled out. Improve the performance.

In the present invention, as the threading mode of the warp yarn to the weft yarn, in addition to the two-by-two jumps as described above, as shown in FIG. It may be a double-sided oblique sentence with 3/3 threading. Three
In the threading of / 3, the floating length of the warp yarn 1 in the longitudinal direction of the hose is further larger than that of the threading of 2/2.
The flow resistance of the water supply on the inner surface is further reduced, and the wear resistance on the outer surface is further improved. However, when the threading jump is 4/4 or more, the number of crossover points is reduced, so that the woven fabric structure becomes soft and unstable, and the abrasion resistance is lowered.

In the present invention, as long as the threading of the warp yarn to the weft yarn is made 2/2 or 3/3, in addition to the oblique weave as shown in FIGS. Other changing tissues such as the vertical furrow shown in FIG.

The fire hose of the present invention can be applied not only to the shape-retaining hose illustrated in FIG. 1 but also to a jacket-type hose in which a monofilament for shape retention is not inserted into a weft thread.

The warp yarn may be either a synthetic fiber multifilament yarn or a spun yarn. Also,
In the case of a shape-retaining hose, the use of a monofilament yarn is indispensable for the weft yarn, but does not prevent the combined use of a synthetic fiber multifilament yarn and a spun yarn as in the embodiment shown in FIG. . In the case of a jacket type hose, the weft yarn may be a synthetic fiber multifilament yarn or a spun yarn.

In the embodiment of FIG. 1, the inner and outer surfaces of the tubular fabric are coated with a resin layer. However, this resin layer is not always required, and may be provided as necessary.

[0018]

According to the present invention as described above,
The warp yarn is passed through the weft yarn outside and inside like 2/2 or 3/3, and the warp yarn protrudes long in the longitudinal direction on the outside surface and the inside surface of the tubular fabric, respectively. Yes,
Moreover, since the weft is covered so that the weft is not exposed, both the inner and outer surfaces of the tubular fabric are in a state of increased smoothness, the flow resistance of the inner surface of the hose for supplying water is reduced, and the outer surface is pulled out from the reel. When the hose is dragged right and left on the ground, the sliding resistance can be reduced, and the wear resistance can be improved.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view schematically showing one example of a fire hose for fire according to the present invention.

FIG. 2 is a plan view showing a surface of a tubular fabric constituting the fire hose of FIG. 1;

FIG. 3 is a structural diagram of a tubular fabric constituting the fire hose of FIG. 1;

FIG. 4 is an organization diagram showing another example of the tubular fabric constituting the fire hose of the present invention.

FIG. 5 is a structural diagram showing still another example of the tubular fabric constituting the fire hose of the present invention.

FIG. 6 is a structural diagram showing still another example of the tubular fabric constituting the fire hose of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Warp yarn 2, 2a, 2b Weft yarn 10 Fire hose 11 Cylindrical fabric 12, 13 Resin layer

Claims (4)

[Claims] 1. A fire hose comprising a tubular woven fabric composed of a warp yarn arranged in a longitudinal direction of a hose and a weft yarn wrapped around the warp yarn in a spiral manner in a circumferential direction, The warp yarn is 2/2 on the outside and the inside of the weft yarn.
Or a fire hose that is threaded by 3/3 and coated so as not to expose the weft thread. 2. The fire hose according to claim 1, wherein a monofilament made of a synthetic polymer is used for the weft yarn. 3. The fire hose according to claim 1, wherein a monofilament made of a synthetic polymer and a synthetic multifilament yarn or a spun yarn are used in combination for the weft yarn. 4. The fire hose according to claim 1, wherein the inner surface and / or the outer surface of the tubular fabric are covered with a resin layer.