JP6921371B2 - Gradient drain - Google Patents

Description

The present invention relates to a sloped drainage ditch installed around a road, a park, a sports facility, a building, or the like.

Conventionally, as drainage ditches installed around roads, parks, sports facilities, buildings, etc., those using concrete groove blocks such as U-shaped groove blocks are generally widely used.

It is also known that such a drainage ditch is provided with a gradient so that water can flow down in a desired direction on a flat place, a slope, or the like.

Conventionally, the slope of a drainage groove using a concrete groove block is determined by installing a concrete groove block such as a U-shaped groove block and then placing cast-in-place concrete at the bottom of the groove block while adjusting the slope. (See, for example, Patent Document 1).

Further, in recent years, a drainage groove structure using a lightweight pipe body made of synthetic resin such as a vinyl chloride pipe has been proposed (see, for example, Patent Document 2).

This drainage ditch is fixed to the drainage ditch main body made of a lightweight tube such as a vinyl chloride pipe embedded at a desired depth below the ground surface and the upper surface of the drainage ditch main body, and the upper end opening is exposed to the ground surface. It is equipped with a vertically oriented tubular water passage body and a grating fitted to the upper surface opening of the water passage body, and the water that has flowed into the water passage body through the grating from the ground surface is drained from the intake port opened on the upper surface of the drainage groove main body. It is designed to flow into the main body.

Further, in a pipeline using this type of lightweight pipe body, for example, as shown in FIG. 11, there is a gradient between the portions where the lightweight pipe bodies 30 and 30 are connected (hereinafter referred to as connecting portions 31 and 31). A bent joint 33 formed by connecting with a pipe body (hereinafter referred to as a slope portion 32) is used, and lightweight pipe bodies 30 and 30 adjacent to each other in the axial direction are connected via the bent joint 33 to form a lightweight pipe body. It is known that the pipeline is provided with a gradient by changing the burial depths of 30 and 30 up and down (see, for example, Patent Document 3). Reference numeral 34 in the drawing is a water passage body fixed to the upper surface of each lightweight pipe body 30.

Jikkensho 56-051113 Gazette Japanese Unexamined Patent Publication No. 2009-243185 Japanese Unexamined Patent Publication No. 2007-308961

However, in the drainage ditch using the conventional gutter block as described above, the ditch block is made of concrete and is heavy, and it is difficult to carry and install it manually. Therefore, the safety and workability are poor, and the construction takes a long time. There was a problem that it required. In particular, in a narrow place where it is difficult for heavy machinery and transportation vehicles to enter, the problem is remarkable, and there is a problem that construction is very difficult.

Further, in a drainage ditch using this groove block, after the groove block is installed, cast-in-place concrete is cast on the bottom of the block to provide a gradient, so that it takes a lot of time to cast concrete and cure it. , There was a problem that the construction period was prolonged.

On the other hand, in the drainage ditch using the above-mentioned conventional lightweight pipe body made of synthetic resin such as vinyl chloride pipe, when a gradient is provided, as shown in FIG. 11, from the ground surface A of each of the lightweight pipe bodies 30 and 30. Since the depths d1 and d2 are different from each other, the heights of the water passage bodies 34 and 34 fixed to the upper surfaces of the lightweight pipes 30 and 30 can be adjusted accordingly, or a plurality of types having different heights can be adjusted. Since it is necessary to prepare a water passing body, the manufacturing cost increases, and cost reduction is desired.

Therefore, in view of such conventional problems, the present invention has been made for the purpose of providing a sloped drainage ditch which is excellent in safety and workability and can be suitably sloped.

The feature of the invention according to claim 1 for solving the above-mentioned conventional problems is a drainage ditch main body embedded at a desired depth under the ground surface and an upper end fixed to the upper surface of the drainage ditch main body. A vertical tubular water passage body whose opening is exposed on the ground surface is provided, and water flowing into the water passage body from the ground surface flows into the drainage groove main body from an intake port opened on the upper surface of the drainage groove main body. The drainage ditch body is formed in a stepwise manner from a deformed connecting joint for connecting lightweight pipes having different vertical widths and a drainage ditch having a smaller vertical width in the flow direction via the deformed connecting joint. A plurality of lightweight pipe bodies having different vertical widths to be connected are provided, and the deformed connecting joint includes a plate-shaped flange portion and a tubular connecting large tubular portion and a connecting large tubular portion having different vertical widths communicating with each other through the flange portion. The connecting small cylinder portion having a small vertical width with respect to the connecting large cylinder portion is biased toward the upper surface side so that the upper end surface of the connecting large cylinder portion and the upper end surface of the connecting small cylinder portion are continuous. The drainage ditch is arranged so that the upper end surface of the drainage ditch main body is continuous in the flow direction and a slope is formed at the bottom of the drainage ditch main body.

The feature of the invention according to claim 2 is that, in addition to the configuration of claim 1, the lightweight pipe body and / or the deformed connecting joint is made of synthetic resin.

The feature of the invention according to claim 3 is that, in addition to the configuration of claim 1 or 2, one side of the deformed connecting joint is fixed to the outer surface of the connecting small cylinder portion, and the other side is the surface of the flange portion. It is to have a reinforcing rib fixed to.

The feature of the invention according to claim 4 is that, in addition to the configuration of any one of claims 1 to 3, the water passage body includes a fixing piece protruding outward from the lower end opening edge, and the fixing piece is said to be said. It is intended to be fixed along the outer surface of the lightweight tube.

The feature of the invention according to claim 5 is that, in addition to the configuration of any one of claims 1 to 4, the deformed connection joint is supported by a support base with a height adjusting mechanism.

By providing the structure according to claim 1, the sloped drainage groove according to the present invention is excellent in workability, and a sloped drainage ditch can be easily constructed. Further, in this sloped drainage ditch, the distance from the ground surface to the upper surface of each lightweight pipe body is constant, and one type of water passage body having the same height may be prepared, thereby suppressing the manufacturing cost of the water flow body. Therefore, the manufacturing cost of the entire drainage ditch can be reduced accordingly. Further, in this sloped drainage groove, it is not necessary to provide a sloped pipe body portion (the sloped portion of the conventional example shown in FIG. 11) in the deformed connection joint itself, and the lightweight pipe bodies can be connected to each other in an abutting arrangement. The lightweight pipes are not arranged intermittently, and the water passing bodies can be arranged continuously without interruption.

Further, in the present invention, by providing the configuration according to claim 2, it is possible to manually transport and install the lightweight pipe body, and it is possible to easily construct a drainage ditch even in a narrow place.

Further, in the present invention, the bending strength of the connecting portion can be enhanced by providing the configuration according to claim 3.

Furthermore, in the present invention, by providing the configuration according to claim 4, the water passing body can be easily fixed to each of the cylindrical lightweight pipes having different outer diameters.

Further, in the present invention, by providing the configuration according to claim 5, the level of the drainage groove main body can be easily adjusted.

It is a schematic side view which shows the usage mode of the gradient drainage ditch which concerns on this invention. It is a schematic plan view which shows the drainage ditch with a gradient as above. FIG. 5 is an exploded perspective view showing a lightweight pipe body and a water passage body constituting a sloped drainage channel in FIG. 1. It is a partially enlarged side view which shows the joint part in FIG. It is a vertical sectional view of the same as above. 1A is a side view showing a deformed connection joint, FIG. 1B is a plan view, FIG. 1C is a rear view, and FIG. 1D is a vertical sectional view. It is a side view which shows an example of the installation state of the drainage ditch with a gradient. It is an enlarged cross-sectional view taken along the line AA in FIG. It is a cross-sectional view taken along the line BB of the same as above. It is an enlarged perspective view of the joint part which shows another example of the gradient drainage groove which concerns on this invention. It is a side view which shows an example of the gradient drainage channel using the conventional lightweight pipe body made of synthetic resin.

Next, an embodiment of the sloped drainage ditch according to the present invention will be described based on the examples shown in FIGS. 1 to 10. In the figure, reference numeral A is the ground surface, reference numeral B is a catchment basin, and reference numeral 1 is a sloped drainage ditch.

As shown in FIGS. 1 and 2, the sloped drainage ditch 1 is fixed to the drainage ditch main body 2 buried at a desired depth below the ground surface A and the upper surface of the drainage ditch main body 2, and has an upper end opening. Is provided with vertically oriented tubular water passages 3, 3 ... Exposed on the ground surface A, and water intakes 4, 4 in which water flowing into the water passages 3, 3 ... from the ground surface opens on the upper surface of the drainage groove main body 2. ..., It flows into the drainage ditch main body 2 and flows down in a desired direction (toward the catchment basin B side in this embodiment) according to the gradient y / x.

The drainage groove main body 2 is formed stepwise from the one having the smaller vertical width in the flow direction via the deformed connecting joints 6, 6 ... Connecting the lightweight pipe bodies 5a to 5d having different vertical widths, and the deformed connecting joints 6, 6 ... A plurality of lightweight pipe bodies 5a to 5d having different vertical widths to be connected are provided, and the upper end surfaces of the respective lightweight pipe bodies 5a to 5d are continuous in the flow path direction and a desired gradient y / x is formed at the bottom. ..

As shown in FIG. 3, the lightweight pipe bodies 5a to 5d are formed of a synthetic resin such as vinyl chloride resin into a cylindrical shape having a predetermined length and diameter, respectively. In this embodiment, the diameters of the cylindrical lightweight pipes 5a to 5d correspond to the vertical width.

Further, water intake ports 4, 4 ... Penetrating inside and outside the pipe are formed on the upper surface of each of the lightweight pipe bodies 5a to 5d, and the water passage bodies 3, 3 ... Are fixed so as to surround the water intake ports 4, 4 ... NS.

As shown in FIGS. 4 to 6, the deformed connecting joints 6, 6 ... Are integrally formed of a synthetic resin such as vinyl chloride resin, and have a disk-shaped flange portion 7 and a diameter that communicates with each other via the flange portion 7. It includes a cylindrical connecting large cylinder portion 8 and a connecting small cylinder portion 9 having different (vertical widths).

The connecting large cylinder portion 8 is formed in a cylindrical shape having a predetermined inner diameter t having substantially the same inner diameter D as the diameter of one of the lightweight tubular bodies 5b (5c, 5d) to be connected, and one end thereof is on the outer edge of one side of the flange portion 7. It is integrally fixed, and the lightweight tube body 5b (5c, 5d) is inserted and fitted from the other end opening.

The connecting small cylinder portion 9 is formed in a cylindrical shape having the same wall thickness t as the connecting large cylinder portion 8 having substantially the same inner diameter d as the diameter of the other lightweight pipe body 5a (5b, 5c) to be connected, and one end in the tubular axis direction. Is integrally fixed to the other surface of the flange portion 7, and the lightweight pipe bodies 5a (5b, 5c) are inserted and fitted from the other end opening.

Further, the connecting small cylinder portion 9 is arranged biased (eccentrically) in the diameter direction by 1/2 of the connecting large cylinder portion 8 (inner diameter D of the connecting large cylinder portion 8-inner diameter d of the connecting small cylinder portion 9). , The upper end surface of the connecting large cylinder 8 and the upper end surface of the connecting small cylinder 9 are continuous in the flow direction, and the height is at the bottom of the deformed connecting joint 6 (inner diameter D of the connecting large cylinder 8-the connecting small cylinder 9). A step with an inner diameter d) is formed.

The flange portion 7 is formed in a disk shape having substantially the same diameter as the diameter of the connecting large cylinder portion 8, and is provided with a communication hole 10 concentrically arranged with the connecting small cylinder portion 9 penetrating in the plate thickness direction, and the connecting large cylinder portion is provided through the communication hole 10. 8 and the connecting small cylinder portion 9 are in communication with each other.

The communication hole 10 is formed to have a diameter slightly smaller than the inner diameter d of the connecting small cylinder portion 9, and the contact retaining portion 11 whose surface of the flange portion 7 projects inward from the inner peripheral surface of the connecting large cylinder portion 8 and the connecting small cylinder portion 9 is provided. The end portions of the lightweight pipe bodies 5a and 5b are abutted against the retaining portion 11.

Further, the deformed connecting joints 6, 6 ... Are provided with reinforcing ribs 12, 12 ... One side of which is fixed to the outer surface of the connecting small cylinder portion 9 and the other side of which is fixed to the surface of the flange portion 7, and each lightweight pipe. The connecting parts of the bodies 5a to 5d are strengthened.

Each of the deformed connection joints 6, 6 ... Is supported by a support base 13 with a height adjusting mechanism, and the level of the upper end surface of the drainage groove main body 2 with respect to the ground surface A by adjusting the height of the support base 13 with a height adjusting mechanism. May be adjustable.

As shown in FIG. 7, the support base 13 with a height adjusting mechanism is connected to a fixed frame portion 14 fitted to the outside of the connecting large cylinder portion 8 and an upper end movably connected to both side portions of the fixed frame portion 14. The support columns 15 and 15 and the support base 16 on which the lower ends of the support columns 15 and 15 are supported are provided, and the support base 16 is installed in the groove bottom formed in the ground.

The support base 13 with a height adjusting mechanism is provided with male screw portions 15a at the upper ends of the support columns 15 and 15, and the male screw portions 15a are passed through the connecting pieces 14a and 14a protruding from both sides of the fixed frame portion 14. The height can be adjusted by fastening the nut 17 to a desired position.

Further, in the support base 13 with a height adjusting mechanism, the lower ends of the support columns 15 and 15 are slidably supported with respect to the support base portion 16, and the distance between the support columns 15 and 15 can be adjusted, and the diameters are different. By providing a plurality of types of fixed frame portions 14, it is possible to correspond to each of the deformed connecting joints 6, 6 ...

The water passage bodies 3, 3 ... Are formed in a square tubular shape having a thin metal plate material such as stainless steel and having a rectangular opening elongated in the axial direction of the lightweight pipe body, and are vertically installed on the upper surfaces of the lightweight pipe bodies 5a to 5d. ..

The water passage bodies 3, 3 ... Are formed to have a length substantially equal to each of the lightweight pipe bodies 5a to 5d in the longitudinal direction, and a plurality of water intakes formed on the upper surface of the lightweight pipe bodies 5a to 5d in the opening on the lower end side. It is fixed to the upper surface of the lightweight pipes 5a to 5d so that the mouths 4, 4 ... Are arranged.

Further, the water passing bodies 3, 3 ... Are formed at a height consistent with the height from the ground surface A to the upper surface of the drainage groove main body 2, and the upper end opening is exposed on the ground surface A and flows on the ground surface A. Water flows in from the water passage bodies 3, 3 ..., And is taken into the drainage groove main body 2 composed of the lightweight pipe bodies 5a to 5d through the intake ports 4, 4 ....

Fixing pieces 18 and 18 projecting outward from the lower end opening edge are provided at the lower part of the water passage bodies 3, 3 ..., And the fixing pieces 18 and 18 are fixed along the outer surface of the lightweight pipe bodies 5a to 5d. I am trying to do it.

As shown in FIGS. 3, 8 and 9, the fixing pieces 18 and 18 have a flexible plate shape protruding outward from the lower edge of the side wall facing the rectangular opening in the lateral direction of the water passage body 3. It is made of a material and has a substantially arc shape so as to be overlapped along the outer peripheral surface of each of the lightweight pipe bodies 5a to 5d.

Further, a plurality of fixing through holes 19 are formed in the fixing pieces 18 and 18, and the fixing through holes 19 are located at positions corresponding to the fixing through holes 20 formed in the lightweight pipe bodies 5a to 5d. A fixing tool 21 such as a blind rivet is inserted into these fixing through holes 19 and 20, and the fixing tool 21 such as the blind rivet allows the fixing pieces 18 and 18 of the water passage bodies 3, 3 ... Lightweight pipe bodies 5a to 5d are fixed.

Further, on the lower side of both ends in the longitudinal direction of the water passage bodies 3, 3 ... In the case of the butt arrangement, the avoidance space is formed by the avoidance recesses 22 so that the water passing bodies 3, 3 ... And the deformed connecting joints 6, 6 ... Do not interfere with each other.

Further, a support plate 23 is erected in the upper end opening of the water passage bodies 3, 3 ... In the lateral direction of the rectangular opening, and the grating 24 is fitted while being placed on the support plate 23. ing.

In the installation of such a sloped drainage ditch 1, excavation is performed from the ground surface A to a predetermined depth to form a drainage ditch groove, and if necessary, a flat base portion is formed at the bottom.

Next, a plurality of lightweight pipe bodies 5a to 5d having different vertical widths (diameters) and deformed connecting joints 6, 6 ... 5a to 5d are connected to assemble the drainage groove main body 2. It is desirable to fix the water passing bodies 3, 3 ... In advance to each of the lightweight pipe bodies 5a to 5d.

At that time, since the lightweight pipe bodies 5a to 5d are made of synthetic resin such as vinyl chloride resin and are lightweight, they can be manually transported and installed.

In the assembly of each of the lightweight pipe bodies 5a to 5d, the upper end surface of the drainage groove main body 2 flows down by gradually connecting the ones having the smallest vertical width (diameter) in the flow direction through the deformed connecting joints 6, 6 ... In addition to being continuous in the direction, a stepped downward gradient y / x is formed at the bottom of the drainage groove main body 2 in the downward flow direction.

For example, in a drainage ditch with a total length of 10 m, a 1.5 / 100 downward gradient y / x is formed by connecting lightweight pipes having diameters of 100 mm, 125 mm, 150 mm, 200 mm, and 250 mm, respectively, in a stepwise manner. Is formed.

Then, the height of each support base 13 with a height adjusting mechanism is adjusted, and the level of the drainage groove main body 2 with respect to the ground surface A, that is, the height at which the upper end openings of the water passage bodies 3, 3 ... Are exposed to the ground surface A. After that, the groove is backfilled, the ground surface A is paved with concrete, asphalt, or the like, and the grating 24 is fitted into the upper opening of the water passages 3, 3 ...

The sloped drainage groove 1 configured in this way is formed by connecting pipes having different vertical widths in a flow direction in a stepwise manner from the one having the smallest vertical width via the deformed connection joints 6, 6 ... The upper end surface of 2 can be continuously formed in the flow direction, and a desired downward gradient y / x formed in a stepped manner can be formed at the bottom of the drainage groove main body 2.

That is, the sloped drainage ditch 1 can form a drainage ditch with a gradient y / x with a simple structure using a lightweight pipe such as a vinyl chloride pipe, and the drainage ditch main body 2 can be formed from the ground surface A. The distance to the upper end surface can be made constant over the entire length of the drainage ditch, and unified water passages 3, 3 ... Of the same height can be used over the entire length of the drainage ditch.

Therefore, in the drainage ditch 1 with a gradient, the water passage bodies 3, 3 ... To be used can be manufactured according to the same standard, and the manufacturing cost can be reduced by that amount, and the cost of the entire drainage ditch can be reduced.

Further, since the graded drainage ditch 1 uses lightweight pipes 5a to 5d made of synthetic resin such as vinyl chloride resin and deformed connection joints 6, 6 ..., The lightweight pipes 5a to 5d can be manually transported. And the installation work can be performed, and the work can be performed efficiently and safely.

In the above-described embodiment, an example in which the cylindrical lightweight pipe bodies 5a to 5d are used has been described, but the lightweight pipe bodies 5a to 5d are not limited to the cylindrical shape, and for example, as shown in FIG. A plurality of square tubular lightweight pipe bodies 25a and 25b having the same width but different vertical widths and a deformed connecting joint 26 may be used.

Further, in the above-described embodiment, an example in which the lightweight pipe bodies 5a to 5d and the deformed connecting joints 6, 6 ... Are formed of a synthetic resin such as vinyl chloride resin has been described, but the lightweight pipe bodies 5a to 5d and the deformed connecting joint 6 have been described. , 6 ... May be formed of lightweight stainless steel or the like.

A Ground surface B Water collecting basin 1 Drainage ditch with slope 2 Drainage ditch body 3 Water passage 4 Intake port 5a to 5d Lightweight pipe body 6 Deformed connection joint 7 Flange part 8 Connecting large cylinder part 9 Connecting small cylinder part 10 Communication hole 11 Riveting Part 12 Reinforcing rib 13 Support base with height adjustment mechanism 14 Fixing frame part 15 Support column 16 Support base 17 Nut 18 Fixing piece 19 Fixing through hole 20 Fixing through hole 21 Fixing tool (flange drain rivet)
22 Avoidance recess 23 Support plate 24 Grating 25a, 25b
26 Deformed connection joint

Claims (5)

It is provided with a drainage ditch main body buried at a desired depth below the ground surface and a vertically oriented tubular water passage body fixed to the upper surface of the drainage ditch main body and having an upper end opening exposed on the ground surface. A drainage ditch in which water flowing into the water passage body flows into the drainage ditch main body from an intake port opened on the upper surface of the drainage ditch main body.
The drainage ditch main body is formed by a deformed connecting joint for connecting lightweight pipes having different vertical widths and a plurality of lightweight connecting joints having different vertical widths which are connected stepwise from the one having the smaller vertical width in the flow direction via the deformed connecting joint. Equipped with a tube
The deformed connection joint includes a plate-shaped flange portion and a tubular connecting large cylinder portion and a connecting small cylinder portion having different vertical widths communicating with each other through the flange portion, and the upper end surface of the connecting large cylinder portion and the said The connecting small cylinders having a small vertical width with respect to the connecting large cylinders are arranged unevenly on the upper surface side so as to be continuous with the upper end surface of the connecting small cylinders.
A sloped drainage ditch characterized in that the upper end surface of the drainage ditch main body is continuous in the flow direction and a slope is formed at the bottom of the drainage ditch main body. The sloped drainage groove according to claim 1, wherein the lightweight pipe body and / or the deformed connection joint is made of synthetic resin. The sloped drainage groove according to claim 1 or 2, wherein the deformed connection joint has a reinforcing rib having one side fixed to the outer surface of the connecting cylinder portion and the other side fixed to the surface of the flange portion. .. The water passing body includes a fixing piece protruding outward from the lower end opening edge, and the fixing piece is fixed along the outer surface of the lightweight pipe body according to any one of claims 1 to 3. The sloped drainage ditch described. The sloped drainage groove according to any one of claims 1 to 4, wherein the deformed connection joint is supported by a support base with a height adjusting mechanism.

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