JPH11178186A - Water channel block - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a water channel block which is provided with a wiring duct in order to reduce the cost while protecting the contained cables against meddling or offense. SOLUTION: A precast concrete water channel block 2 comprises a water channel section 10, an upper wiring duct section 11 and a lower wiring duct section 12 and a plurality of blocks 2 are coupled to define a water channel and a wiring duct. The lower wiring duct section 12 is surrounded entirely in the length direction by concrete having integral and continuous cross-sectional circumference and protected. Preventive means, i.e., a recess 13 and a protrusion 14, are formed to mate each other on the opposite end face on the coupling side of the water channel block 2. The water channel block 2 is used for constructing a ditch or a culvert.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a precast concrete waterway block provided with wiring paths for accommodating cables such as communication cables and power distribution cables.

[0002]

2. Description of the Related Art In recent years,
Under the demand for protection of cityscapes, underground communication cables and power distribution cables such as optical fibers are being promoted. However, the construction of an underground wiring path generally costs more than ten times as compared with that of an overhead wiring path. Therefore, for example, by installing a waterway and a wiring way in one groove,
Japanese Patent Laid-Open No. 61-17993 discloses a concrete joint groove which enables cost reduction as compared with a case where a wiring path is separately provided.
No. 1 discloses this. As shown in FIG. 14, the common groove 50 is provided with a water-permeable layer 52 in which soil and sand are arranged in the middle of a U-shaped groove 51 buried in a site 54.
A drop cover 53 for preventing rainwater from entering is provided on the upper surface of the device 1. The bottom 50b of the common groove 50 is used for sewage and the like for sewage W, and the power distribution cable E, the communication cable C, and the like are arranged on the upper part 50a.

However, when the drop lid 53 is removed, the groove 51 is removed.
, A person other than the facility administrator invades, and the power distribution cable E, the communication cable C, etc. are cut off, or a wiretap is attached to the communication cable C, and mischief or crime is performed. There was a possibility.

[0004] In order to prevent such mischief or crime, a groove block with a lid in which a dropping lid can be locked to the groove is disclosed in Japanese Utility Model Publication No. 2-1258. In this way, a person who does not have the key cannot open the lid, but there is still a possibility that the key may be stolen or a duplicate key may be created.

[0005] In general, since the common ditch is provided only along the main arterial road, etc., when arranging a communication cable or a distribution cable for general homes, the arrangement route becomes rather detour. There is also a problem that construction costs and wiring usage may increase.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, and to provide a wiring path which not only can reduce the cost by providing a wiring path in a waterway but also can prevent mischief and crime against the stored cable. An object of the present invention is to provide an additional waterway block.

[0007]

In order to achieve the above object, a waterway block according to the present invention comprises a waterway portion and a wireway portion, a plurality of which are connected to form a precast which forms a waterway and a wireway. In concrete waterway blocks,
The whole or main part of the wiring path in the length direction is protected by being surrounded by an integral and continuous concrete at the cross section.

[0008] A part of the wiring path portion other than the main portion in the longitudinal direction is covered with a concrete body whose periphery around the cross section is largely protected by integral and continuous concrete, and the rest around the cross section is openable and closable and lockable. Preferably it is closed.

The method of providing the wiring path portion is not particularly limited, but (1) a mode provided near one wall of the channel block, and (2) two or more walls of the channel block. The provided embodiment can be exemplified. Here, the “wall” refers to a top wall, a bottom wall, one side wall, or the other side wall.

[0010] Further, it is preferable that a displacement preventing means for preventing displacement of the waterway blocks is provided at an end on the connection side. The means for preventing displacement is not particularly limited, but (1) a concave / convex shape is formed at the opposing connection side end of the waterway block to be connected, or (2) the projection / recess is connected to the opposing connection side end face. For example, passing a pin can be exemplified. Any one or more of these displacement prevention means may be provided.

It is preferable that a separation preventing means for preventing separation of the waterway blocks is provided at an end on the connection side.

Here, the use of the waterway block is not particularly limited, but it can be exemplified to be used for construction of a gutter or a culvert.

[0013]

FIG. 1 is a block diagram showing an embodiment of the present invention.
This will be described with reference to FIGS. FIG. 1 shows a gutter 1 constructed using the waterway block of the present invention. The gutter 1 is formed by connecting a plurality of waterway blocks 2 and 3 to a waterway 5, a distribution line 6, and a lower side. A wiring path 7 is formed. The branch block 4 is inserted in the middle of the side groove 1, and the wiring paths 6, 6
7 is branched. Then, sewage W is flowed as sewer in the water channel 5 of the gutter 1 buried in the site 30, and the power distribution cable E is supplied to the upper wiring path 6 and the lower wiring path 7, respectively.
And a communication cable C are provided. Note that the arrangement of the blocks 2, 3, and 4 in FIG. 1 is merely an example and is not limited thereto, and may be changed as appropriate. For example, the waterway block 3 may be connected to the branch block 4.

As shown in FIGS. 2 and 3, the channel block 2 is made of precast concrete (hereinafter, referred to as PCa) and has a substantially rectangular frame shape in cross section. It is 10. Above the left and right side walls of the waterway block 2, an upper wiring path 11 having a rectangular hole shape is provided in parallel with the length direction of the waterway 10. A lower hole 12 having a circular hole shape is provided below the both side wall portions in parallel with the length direction of the water passage portion 10. All are protected by a single piece of continuous concrete surrounding the cross section. As described above, the upper wiring path portions 11 and 11 and the lower wiring path portions 12 and 12 are provided separately on both side walls of the waterway block 2.
And the lower wiring path portion 12 are vertically separated from each other. For this reason, it is possible to reduce electromagnetic mutual interference between the cables arranged in the respective wiring path portions 11 and 12.

A concave portion 13 and a convex portion 14 are formed on both connection side end surfaces of the waterway block 2 as slippage preventing means, which are disposed so as to mesh with each other. In the present embodiment, the concave portion 13 and the convex portion 14 are formed along both side wall side edge portions and the bottom wall side edge portion of the connection side end surface, but this is an example and the present invention is not limited to this. For example, the configuration may be changed as appropriate, such as omitting the concave portion 13 and the convex portion 14 at the bottom wall side edge.

Further, four connection pin insertion holes 15 are provided around the water passage portion 10 on the connection side end face, and the insertion holes 15 are formed at a depth approximately half the length of the connection pin 16. Have been. An embedding nut 19 for mounting the separation preventing plate 18 is embedded at a substantially middle position in the height direction of the side wall on the connection end side.

As shown in FIGS. 4 and 5, the waterway block 3 is provided with a drop lid 8 on the upper surface side of the waterway block 3. When the drop lid 8 is removed, the waterway section 10 and the upper wiring path section 11 are removed. It differs from the waterway block 2 only in that the upper side is open so that the waterway section 10 and the upper wiring path section 11 can be maintained.

The method of connecting the waterway block 2 and the waterway block 3 will be described. First, as shown in FIG. 6, the waterway block 2 is connected to one of the connection pin insertion holes 15 on the end face of the waterway block 2. Insert the pin 16 into the insertion hole 15
Insert all the way to the end. At this time, the connecting pin 16 has a length that is approximately less than half of the length protrudes from the connecting side end surface. Next, the concave portion 13 and the convex portion 14 on the connection side end surfaces of the two waterway blocks 2 and 3 are engaged with each other, and the connection pin 16
The projecting portion is connected to the connecting pin insertion hole 1 of the waterway block 3.
Go into 5. Next, when the separation preventing plate 18 is fixed to the embedding nuts 19 of both the waterway blocks 2 and 3 with the bolts 17, the waterway block 2 and the waterway block 3 are connected. The waterway blocks 2 and the waterway blocks 3 can be connected in the same manner.

At this time, the displacement between the waterway blocks 2 and 3 is reduced by the concave portion 13 and the convex portion 14 as the first displacement preventing means and the connecting pin 16 and the insertion hole 15 as the second displacement preventing means. The separation between the waterway blocks 2 and 3 is prevented by the bolt 17, the embedded nut 19, and the separation preventing plate 18 as the separation preventing means (the bolt 17, the embedded nut 19, and the separation preventing plate 18 are separated from each other). , And also acts as slippage prevention means). In this way, the waterway blocks 2 and 3 are securely connected so as not to be displaced from each other. In addition, it is more preferable to provide all of the above-described displacement prevention means and separation prevention means, but it is not necessary to provide all of the means, and it is sufficient that at least one of the means is provided.

As shown in FIGS. 7 and 8, the branch block 4 includes a box-shaped PCa block body 20 provided with a dropping lid 23 on the upper surface side, and is connected to the waterway block 3. On the pair of connection side end surfaces 20a,
A U-shaped recess 21 which is omitted in a substantially U-shape is provided. A U-shaped groove 22 that is connected to the waterway portion 10 of the waterway block 3 spans the U-shaped concave portion 21 of each of the connection side end surfaces 20a. The upper part of the U-shaped concave portion 21 is enlarged rightward and leftward, and the enlarged portion 26 is connected to the upper wiring path portion 11 of the channel block 3. U-shaped recess 21
On the left and right of the lower side, the lower wiring path section 1 for the waterway block 3
2 is provided with a hole 27 connected to the second hole. Further, four thin portions 24 are provided on each of the pair of side walls 20b, and the wiring passages 6 and 7 can be branched in a direction orthogonal to the water channel 5 by appropriately breaking the thin portions 24. . In FIG. 8, the thin portion 24 on the right side in FIG. 8 is broken and branched to a wiring path 25. Also, the thin part 2 on the left side
4 is not used, but is filled with a mortar 28 (illustrative, not necessarily filled). 7 and 8, the thin portion 24 is formed into a circular concave shape in the side wall 20b.
Is formed in a concave shape, but is not limited to this, and may be formed in a rectangular concave shape.

The method of connecting the branch block 4 and the channel block 2 is not particularly limited, but the following method can be exemplified. That is, the end surface of the waterway block 2 on the connection side with the branch block 4 is formed in a plane. Then, the positions of the U-shaped groove 22, the enlarged portion 26 and the hole 27 of the branch block 4 and the positions of the water passage portion 10, the upper wiring passage portion 11, and the lower wiring passage portion 12 of the water passage block 2 are made to coincide with each other. By placing mortar between the end faces of blocks 2 and 4,
The waterway block 2 and the branch block 4 are connected. Note that the above-described means for preventing displacement may be appropriately provided on the end faces of both blocks 2 and 4. The same applies to the case where the branch block 4 and the waterway block 3 are connected.

The waterway block 2 constructed as described above
According to 3, the entire length of the lower wiring path portion 12 in the length direction is protected by being surrounded by an integral and continuous concrete at the cross section, so that the cable accommodated in the lower wiring path portion 12 is protected. Mischief and crime can be reliably prevented.

Further, since the waterway blocks 2 and 3 and the branch block 4 are made of PCa, it is possible to reduce the number of assembling and finishing steps and the number of skilled workers on site, thereby reducing the cost.

Note that the present invention is not limited to the configuration of the above-described embodiment, and can be embodied by appropriately changing, for example, the following without departing from the spirit of the invention. (1) As shown in FIG. 9, the width of the lower part of the cross section of the block for water channel 31 is reduced. By doing so, it is possible to secure the wall thickness of the side wall for holding the drop lid 8 at the upper section of the waterway block 31 and to reduce the amount of concrete used at the lower section of the same section. And
Since the volume of the waterway block 31 is reduced, the labor and man-hour for excavation when the block 31 is buried in the site can be reduced.

(2) The number and positions of the wiring paths are appropriately changed. For example, as shown in FIG. 10, the height of the waterway block 32 may be increased, and the same wiring path 12 as the lower wiring path 12 may be provided at an intermediate height position of the waterway block 32. Good.

(3) As shown in FIG. 11, the waterway block 35 is formed in an inverted U-shape so that the bottom side of the waterway portion 36 opens to the lower surface side of the waterway block 35. The bottom wall 37 of the channel 36 is formed by placing concrete after the channel block 35 is installed on site.

(4) As shown in FIG. 12, the waterway block 40 is connected to the main portion 11a of the upper wiring passage portion 11 in the longitudinal direction.
Is protected by being surrounded by integral and continuous concrete, and a portion 11b of the wiring path portion 11 other than the main portion in the longitudinal direction is largely protected by integral and continuous concrete. The rest around the cross section is closed by a lid 41 that can be opened and closed and can be locked by a key 42. In this way, it is possible to reliably prevent the cables C and E housed in the upper wiring path 11 from being tampered with and crime.

(5) As shown in FIG.
1 and 12 are provided to be close to one side wall of the channel block 45. This makes it easier to arrange the cables C and E toward the branch-side wiring path when the wiring path portions 11 and 12 are branched only to the one side wall.

(6) The drop lid 8 is configured to be lockable to the waterway block 3 or the branch block 4. (7) An embedding nut is provided on the side wall, and a shelf is attached to the embedding nut, so that a cable can be temporarily erected on the shelf when a waterway block is installed or replaced. thing.

[0030]

As described above in detail, according to the block for a waterway according to the present invention, not only the cost reduction effect by providing the wiring path to the waterway but also the mischief and crime against the accommodated cable can be surely prevented. There is an excellent effect that a wiring path that can be prevented can be provided alongside the waterway.

[Brief description of the drawings]

FIG. 1 is a plan view of a gutter constructed by a channel block according to an embodiment of the present invention.

FIG. 2 is a perspective view of the waterway block.

FIG. 3 is a cross-sectional view of a gutter constructed using the block for waterway.

FIG. 4 is a perspective view of the waterway block with the lid.

FIG. 5 is a sectional view of a gutter constructed using the waterway block with the lid.

FIG. 6 is a perspective view showing a method of connecting the waterway blocks to each other.

FIG. 7 is a perspective view showing a branch block for branching a wiring path of the side groove.

FIG. 8 is a sectional view of a side groove constructed using the branch block.

FIG. 9 is a cross-sectional view of a gutter showing a first modified example of the waterway block.

FIG. 10 is a sectional view of a gutter showing a second modification of the waterway block.

FIG. 11 is a sectional view of a gutter showing a third modification of the waterway block.

FIG. 12 is a perspective view showing a fourth modification of the waterway block.

FIG. 13 is a sectional view of a gutter showing a fifth modification of the same waterway block.

FIG. 14 is a sectional view showing a conventional concrete gutter.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Side groove 2 Waterway block 3 Waterway block 5 Waterway 6 Upper wiring way 7 Lower wiring way 10 Waterway part 11 Upper wiring way part 12 Lower wiring way part 13 Concave part 14 Convex part 15 Connection pin insertion hole 16 Connection pin 17 Bolt 18 Separation Prevention Plate 19 Embedded Nut 31 Waterway Block 32 Waterway Block 35 Waterway Block 36 Waterway Part 40 Waterway Block 41 Lid 42 Key 45 Waterway Block

Claims (6)

[Claims] 1. A precast concrete waterway block comprising a waterway portion and a wireway portion, a plurality of which are connected to form a waterway and a wireway, wherein all or main portions of the wireway portion in the longitudinal direction are provided. A waterway block, wherein the section is protected by being surrounded by integral and continuous concrete at the cross section. 2. A part of the wiring path portion other than the main portion in the longitudinal direction is largely covered with integral and continuous concrete around the cross section, and the remaining portion around the cross section is openable / closable and lockable. 2. The block for a waterway according to claim 1, wherein the block is closed by a body. 3. The waterway block according to claim 1, wherein the wiring path portion is provided close to one wall of the waterway block. 4. The waterway block according to claim 1, wherein the wiring path portion is provided on at least two walls of the waterway block. 5. The block for a waterway according to claim 1, wherein a shift preventing means for preventing a shift between the blocks for the waterway is provided at an end on the connection side. 6. The block according to claim 1, wherein separation prevention means for preventing separation of the block for water passage is provided at an end on the connection side.