JPH09100950A - Pipe assembly - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a pipe assembly strong against the impact of sediment in backfilling and unsubject to damage such as cracking and make it easy to lay the pipe assemblies in vertical and lateral piles to a laying direction. SOLUTION: In a pipe assembly with pipe bodies 3 collected being inserted and supported in a plurality of holes formed in a partition plate 2 of thick plate shape, the end part of each pipe body 3 is formed into a spigot part 5 of engaging structure, and both end parts of the hole of the partition plate 2 are formed into socket parts 6 for engagingly inserting the spigot parts 5. In addition, the side face of the partition plate 2 is provided with a connecting engaging part or an engaged part with another partition plate disposed at the side if necessary.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tube bundle which is suitable as a wire bundle for protecting an electric wire, in which a plurality of underground pipes for housing and protecting electric wires are put together.

[0002]

2. Description of the Related Art Conventionally, when a plurality of electric wires are buried underground in a multi-row multi-stage manner, a method of laying using a pipe pillow or the like for fixing a plurality of pipes is used. Then, it is necessary to lay one pipe at a time, and it is necessary to backfill each time one stage is laid. For example, when the number of pipes is large, it takes a lot of time for the work. there were. A tube converging body in which a plurality of tubes that do not cause such inconvenience are converged by a spacer or the like is widely known. Since this is a structure in which multiple pipes are fixed in multiple rows and multiple stages with a spacer etc. and bundled, it is possible to lay multiple pipes at once, and after laying backfill of earth and sand, Finally, it suffices if the entire excavation section is backfilled, and it is not necessary to perform it step by step. Therefore, the working time can be greatly shortened, which is useful.

However, when backfilling, the excavation part is backfilled all at once by using a heavy machine, so that the impact of the earth and sand on the pipe body at that time is large, and the pipes by joints or the like are placed between the partition plates. When there is a connection part of, the connection part is relatively weak in strength, so that the impact of earth and sand often caused damage such as cracking and cracking.

Further, since such a type is fixed in multiple rows and multiple stages by a spacer or the like, it is very easy to position a plurality of pipes in the pipe laying direction (pipe length direction), Although it has the advantage that the straightness can be maintained, it is not easy to position in the vertical and horizontal directions with respect to the laying direction when it is necessary to lay several of these tube bundles side by side or one on top of the other. It was

[0005]

In the tube focusing body of the present invention, the tube body 3 is formed in each of a plurality of holes formed in the thick partition plate 2.
In the tube bundle 1 that is bundled by being inserted and supported, the ends of the tube body 3 are the insertion openings 5 having the engaging structure, and both ends of the holes of the partition plate 2 are respectively inserted into the insertion holes 5. The opening 5 is a receiving portion 6 into which the opening portion 5 is inserted and engaged, and the side surface of the partition plate 2 is further provided with an engaging portion 8 or a to-be-engaged portion for connection with another partition plate which is arranged laterally as necessary. It is characterized in that the section 9 is provided.

That is, the insertion port structure of the fitting joint is integrally formed at the end of the tube body of the tube bundle of the present invention, and the inner surface of the hole of the partition plate has a corresponding receiving port structure. Since it has, the connecting portion between the pipes exists not in the space between the partition plates but in the partition plate portion. Therefore, the connecting portion of the pipe is strong against the impact of earth and sand at the time of backfilling, and does not cause damage such as cracks and cracks.

Further, the side surface of the partition plate according to the present invention has an engaging portion or an engaged portion for connection, which corresponds to the engaged portion or the engaging portion on the side surface of the partition plate adjacent thereto. Therefore, even when several tube bundles of the present invention need to be laid side by side or stacked, the positioning in the vertical and horizontal directions with respect to the laying direction can be easily performed.

The material of the partition plate of the present invention is not particularly limited, but it is preferable to use a polymer material having excellent moldability because it is characterized by having a joint receiving portion structure on the inner surface of the hole. Polyethylene, hard vinyl chloride resin,
Examples thereof include polypropylene, polystyrene, fiber reinforced plastic and the like. The partition plate can be obtained by molding these materials by an appropriate method such as extrusion molding, injection molding, and welding. The thickness of the partition plate is set to an appropriate thickness depending on the size of the socket structure, etc., but is usually 30 to 100 mm.
It is appropriately set according to the situation within the range of. The vertical and horizontal sizes are set by the number of fixed pipes, but it is desirable that the size is as small as possible in order to reduce the excavation width and depth during construction.

The material of the tubular body in the present invention is not particularly limited, but a material having good moldability is desirable because the insertion portion of the joint is integrally molded at the end, and polyethylene, hard vinyl chloride resin, polypropylene, Polyethylene, fiber reinforced plastic, etc. are used, but when the same kind of material as the material of the partition plate is used, the difference in strength between them is small, and the watertightness is excellent, which is most preferable. When fitting and fixing a plurality of pipes to the partition plate, it is desirable to set the positions of the holes in the partition plate so that the intervals between the pipes are as narrow as possible. If the intervals between the pipes are fixed narrowly, the fixed multiple pipes will be densely bundled, and there will be almost no space for water or earth and sand to infiltrate between the pipes after the construction. Less likely to cause equal subsidence. Further, in this case, since the size of the entire tube converging body is reduced, it is possible to reduce the excavation width and depth during construction. The shape of the pipe body is not particularly limited, and a straight pipe, a corrugated pipe, or the like is selected.
In the case of a corrugated pipe, it has an advantage that it has excellent wireability because the contact area when the cable runs is small. Further, when a material having a sufficiently low friction coefficient and no problem in passage is used, a straight pipe is selected because of the cost problem at the time of molding.

The laying of the tube bundle is performed by fitting a tube body having an end portion as an insertion portion to a partition plate having a receiving portion at the site. The length of one pipe to be fitted, that is, the range of the distance between the partition plates in the laying direction is as follows.
From the viewpoint of fitting workability, it is preferable that the length is 5 m or less. Further, if the distance is 50 cm or less, the number of fitting points per unit length increases, which leads to an increase in working time. Therefore, it is preferable that the length is more than this length.

[0011]

[Operation] Since the insertion part is integrally formed at the end of the tube body of the tube converging body and the hole of the partition plate has the receiving part, the connecting part of the pipe exists in the partition plate part, and the earth and sand etc. No damage such as cracks or cracks will occur during backfilling. In addition, since the partition plate of the present invention has an engaging portion and an engaged portion for connection on the side surface and can be connected to the partition plate adjacent to the side of the partition plate, the number of pipe bundles is increased. Positioning in the vertical and horizontal directions with respect to the laying direction can be easily performed when laying bodies side by side or overlapping.

[0012]

EXAMPLES The present invention will be described in detail below with reference to examples.

(Embodiment) This embodiment will be described with reference to the drawings. FIG. 1 shows a perspective view of a tube assembly with two rows and two stages in this embodiment. FIG. 2 shows a partition plate 2 to be fitted.
It is the figure which looked at the tube body 3 from the side. FIG. 3 shows a connecting portion in the hole of the partition plate. FIG. 4 is a front view of the tube converging body viewed from the partition plate. FIG. 4 shows a front view when four tube bundles are located vertically and horizontally with respect to the laying direction. Further, FIG. 5 shows the correspondence between the convex portions and the concave portions of the adjacent partition plates.

The tube bundle 1 has a structure in which four pipe bodies 3 are bundled in two rows and two stages by a partition plate 2.
From the next partition plate 2 was 1 m. Also, the connection part 4
In FIG. 3, it is fitted and fixed by the insertion portion 5 at the end of the tube body 3 and the corresponding receiving portion 6 on the inner surface of the hole of the partition plate 2 as shown in FIG. Further, in order to further improve the watertightness, a rubber packing 7 is interposed between the tip of the insertion part 5 and the receiving part 6 to form a sealing material. The fitting can be easily fixed by simply pushing the end portion of the pipe body 3 into the hole of the partition plate and fitting it into the hole portion, which requires less work time and manpower.

Both the partition plate 2 and the tubular body 3 are made of hard vinyl chloride and are made of the same material.

Further, the side surface of the partition plate 2 of this embodiment has a cross-shaped convex portion 8 or concave portion 9 used for connection with another partition plate 2, and the convex portion 8 and the concave portion 9 are shown in the drawing. The corresponding structures are as shown in FIG. When the four tube bundles are laid vertically and horizontally, they are laid so that the convex portions 8 of the partition plate 2 enter the adjacent concave portions 9 as illustrated in FIG. The convex portion (engaging portion) 8 and the concave portion (engaged portion) 9 facilitate positioning of the tube focusing body in the vertical and horizontal directions.

Further, after excavating the ground and actually laying 10 m by using the tube bundle of this embodiment, the earth and sand were finally backfilled. The excavation depth was set to be 30 cm from the point closest to the ground surface of the pipe bundle to the ground surface. After the backfilling, the joints 4 were not observed in any places, especially when observing the connection part 4 for damages such as cracks and cracks due to the impact of the earth and sand applied to the tube bundle during the backfilling.

(Comparative Example) FIG. 6 shows a perspective view of a comparative example, and FIG. 7 shows a view seen from the side of the partition plate 10. Explaining with reference to FIG. 7, the tube body 11 is passed through the hole of the partition plate 10, and the tube body 11 and the partition plate 10 are fused and fixed in this hole. Further, an insertion portion is integrally formed at an end portion of the pipe body 11, and a receiving portion corresponding to the insertion portion is integrally formed at one end portion, and the pipe bodies have a structure fitted at the connection portion 12. . This connecting part 12 is composed of two partition plates 10.
Exists between.

Except for the above points, the tube bundle of Comparative Example was the same in material, size, number of threads, and number of steps as in Example.

The pipe bundle of this comparative example was laid for 10 m in the same manner as in the example, and the presence or absence of breakage such as cracks or cracks at the connecting portion was evaluated.
From one to the next partition plate, breakages such as cracks and cracks were observed at an average of 3 out of 4 connection portions per section.

[0021]

In the tube bundle provided by the present invention, the insertion portion is formed at the end portion of the tube body, and the inner surface of the hole of the partition plate has the corresponding receiving portion structure. The connection part will exist in the partition plate part. Therefore, it is strong against the impact of earth and sand at the time of backfilling and does not cause damage such as cracks and cracks. Further, since the side wall of the partition plate of the present invention is provided with an engaging structure for connection with another partition plate, it can be laid even when it is necessary to lay several tube bundles side by side or one on top of the other. This brings about the effect that the positioning in the vertical and horizontal directions relative to the direction can be easily performed.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a two-row two-stage tube focusing body according to an embodiment.

FIG. 2 is a view of a partition plate 2 and a tube body 3 which are fitted with each other as seen from a side surface.

FIG. 3 is a diagram showing a connection portion in a hole portion of a partition plate.

FIG. 4 is a front view in the case where four tube bundles are located vertically and horizontally with respect to the laying direction.

FIG. 5 is a diagram showing a correspondence between a convex portion and a concave portion of adjacent partition plates.

FIG. 6 is a perspective view of a two-row two-stage tube focusing body of a comparative example.

FIG. 7 is a diagram of a tube converging body of a comparative example viewed from a side surface of a partition plate 10.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Electric wire protection tube bundle 2 ... Partition plate 3 ... Tube body 4 ... Connection part 5 ... Fitting type joint insertion part 6 ... Partition plate hole inner surface Receiving part 7 ... Rubber packing for sealing 8 ... Convex part 9 ... Recessed part 10 ... Partition plate of comparative example 11 ... Tube body of comparative example 12 ... Connection part of comparative example

Claims (1)

[Claims] 1. A tube converging body (1) in which a tube body (3) is inserted into and supported by a plurality of holes formed in a thick plate-like partition plate (2). The end of the body (3) is an insertion opening (5) having an engaging structure,
Both ends of the hole of the partition plate (2) are respectively the insertion port (5).
And a partition plate (2).
On the side surface of the pipe, there is provided an engaging portion (8) or an engaged portion (9) for connection with another partition plate arranged laterally, if necessary, .