JP4474037B2 - Catchment cover - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a road surface cover for collecting water such as rainwater, which is installed on the shoulder of a road, for example.
[0002]
[Prior art]
For example, there is a gutter on the shoulder that is the boundary between the roadway and the sidewalk, and rainwater on the roadway is formed so that the roadway is inclined downward toward the sidewalk, so it flows to the sidewalk side and is guided into the side groove. Drained. It is normal that the upper surface of the gutter is almost blocked, but a concrete or cast iron water surface cover for collecting and draining rainwater is installed at an appropriate location and flows to the sidewalk side. Rainwater is separated from pebbles and debris that have flowed into the gutter directly after passing through the water outlet of the drainage road surface cover, or into the rainwater basin constructed on the lower side. (Some rainwater troughs are designed to infiltrate some of the inflowing rainwater into the ground). As the water collection road surface cover, one having a grid shape and a large number of relatively short water outlets provided on the entire surface is widely used. However, a plurality of or many water outlets formed to extend long are used. The water collection road surface cover provided is also used.
[0003]
[Problems to be solved by the invention]
By the way, the rainwater flowing toward the sidewalk on the roadway contains relatively large foreign objects such as fallen leaves, but fallen leaves etc. flow into the side groove from the lid's water entrance and accumulate, for example, at the bent part of the side groove. The smooth flow of rainwater is obstructed. In addition, if a rainwater tank is installed under the road surface cover for collecting water, a large amount of fallen leaves will flow and accumulate in the rainwater basket of the rainwater tank in a short period of time, separating rainwater and foreign matter from the rainwater tank. Since the function is reduced or lost, frequent maintenance is required, and excessive road management labor and cost are required. If the water passage is formed with a narrow width, it is difficult for large foreign matters such as fallen leaves to pass through the narrow water passage, and the fallen leaves and the like are easily prevented from accumulating in the side grooves.
[0004]
However, the water outlet is usually provided perpendicular to the direction crossing the roadway so that it can catch the rainwater flowing in from the roadway side as a whole and flow into the rainwater trough or the gutter. Even if the width of the water inlet is made narrow, it is not always possible to prevent a large number of fallen leaves and the like contained in the rainwater flowing in from the roadway side from being drawn into the water outlet and falling into the rainwater tank. That is, as shown in FIGS. 7 and 8, the flow of rainwater from the roadway or road B (the center side of the roadway or road B) is the road end side of the water outlet 100 provided in the direction along the road shoulder A or A turbulent flow is generated in the inner wall surface 102 on the rear side. As a result, the fallen leaves C and the like contained in the rainwater cannot be passed over the water passage 100 extending so as to cross the traveling direction and are drawn into the water passage 100. There is a risk of end. If the water passage 100 is formed to be extremely thin in order to sufficiently prevent the fallen leaves C and the like from being drawn in, the smooth recovery function of rainwater is greatly hindered.
[0005]
Accordingly, the present invention provides a water collection system that can effectively reduce the entrainment of fallen leaves and the like contained in rainwater without greatly hindering the inflow of rainwater flowing from the road side through the road surface cover for collecting water. The purpose is to provide a road surface cover.
[0006]
[Means for Solving the Problems]
In order to achieve this object, the road surface cover for collecting water according to the present invention has a road shoulder (in the middle of the road where a median is provided, so that the surface of the cover is at the same or almost the same height as the road shoulder). For example, a water collecting road surface cover in which a plurality of water passage slits are formed, and a central part or a substantially central part of the cover surface is configured as a convex non-deposition part. This is the basic configuration. When there is a large amount of fallen leaves etc. in the rainwater that flows along the downward slope in the crossing direction of the road during rainfall, the rear end (road end side) of the cover surface of the water collection road surface cover There are fears that many fallen leaves or the like are accumulated on the front side, blocking the water passage slit and hindering the inflow of rainwater into the rainwater trough or the side groove. Therefore, the central part or almost central part of the lid surface is formed as a convex non-deposition part, preferably as a spherical convex non-deposition part, so that fallen leaves etc. are not deposited in the central part or almost the central part. Keep it. Even if fallen leaves or the like are accumulated on the surface of the lid, rainwater flows into the rainwater trough or the side groove through the water passage slit of the non-deposition portion where no fallen leaves or the like are accumulated. In order to ensure a smooth inflow of rainwater at the central part or almost the central part, it is preferable that the water passage slits at the non-deposition part are formed so as to be parallel or substantially parallel to the direction across the road. Is formed linearly. Moreover, both sides of the direction orthogonal to the road crossing direction of the non-deposition part in the lid | cover surface are formed in planar shape.
[0007]
The water passage slit can be formed in a straight line so as to be parallel or substantially parallel to the road crossing direction. It is effective to make the water passage slits elongated. The water flow slit can be formed in a straight line in the same direction as the rainwater flow along the downward gradient in the crossing direction of the road, but if configured in this way, turbulent flow of rainwater flowing in the crossing direction of the road is generated. Rain water, pebbles and earth and sand are smoothly guided into the water passage slit and flow into the rain water trough or gutter, and large foreign matters such as fallen leaves are drawn into the water passage slit that is sufficiently narrower than the foreign matter. Without moving on the water slit, it stops on the water slit.
[0008]
Furthermore, water collecting road closure of the present invention can be assumed that the slit-free portion extending along the shoulder with a suitable width to the road end water passage slits in the lid surface is provided. The road end side of the water collection cover is the part where rainwater collects from the road side and the sidewalk side, for example, and the rainwater that flows along the road end side along the gradient in the length direction of the road also flows in. It is a place where a lot of fallen leaves concentrate. Therefore, if a water passage slit of a size capable of drawing fallen leaves, especially a water passage slit extending in a direction crossing the road, is formed on the road end side of the water collecting road surface cover, the road end side is formed in a band shape. A turbulent flow may occur in the flowing rainwater, and there is a possibility that some of a large amount of fallen leaves and the like that cannot be ignored is drawn into the water passage slit . Therefore, it is preferable to provide a slit non-formation part in which a water passage slit is not formed extending along the road shoulder with an appropriate width on the road end side of the water collecting road surface cover. That is, the water passage slit is terminated before the edge on the road end side so that the slit non-forming portion is provided. A plurality of small holes for passing water through which only rainwater, pebbles and earth and sand are allowed to pass are provided in the non-slit portion so as not to deteriorate the function of the water collecting road surface cover for guiding rainwater into the rainwater gutter or the side groove. It is effective to keep it. The small water passage hole is preferably formed so as to open at the upper end surface of the protruding portion provided on the surface of the slit non-forming portion. In addition, it is effective that the surface of the slit forming portion is inclined downward toward the road end side so that the surface of the slit non-forming portion is substantially horizontal.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0010]
FIG. 1 is a view showing an installation state of a rainwater drainage lid which is a kind of water collecting road surface cover to which the present invention is applied, FIG. 2 is a sectional view taken along line II-II in FIG. 1, and FIG. 3 is III-III in FIG. It is a line end view.
[0011]
The rainwater tank lid 1 (collection road surface cover) formed integrally with casting is formed in a substantially square shape and extends downward to a lid receiving portion E of the rainwater tank D formed on the shoulder A of the road B at intervals of about 20 m. The edge frame 3 is fitted, is detachable, and is installed so that the lid surface 5 has the same height as the surface of the road shoulder A. The rainwater tank lid 1 has a water passage slit 7 (water passage) extending in a direction crossing the road B, that is, perpendicular to the direction along the road shoulder A, from one side edge portion 9 to the other side edge portion. 11, each of the water passage slits 7 extends from the front edge 13 of the rainwater drain lid 1 to the front edge 15 of the rainwater tank lid 1 (that is, to the edge of the road edge side or considerably before the rear edge). ) Extending to form a rectangular slit forming portion 17 that is long in the direction (width direction) along the shoulder A, and the width direction central portion of the slit forming portion 17 near the rear end portion 15 (the lid for the rainwater tank) 1 is formed as a gentle spherical convex portion, and constitutes a non-deposited portion 19. The slit forming portion 17 is formed relatively thick (that is, thick in the vertical direction) in order to compensate for the strength reduction due to the formation of the water passage slit 7. In addition, you may divide the water slit 7 by forming a dividing wall, for example in the center part of the length direction of the water slit 7 continuously extended. That is, you may comprise the slit formation part 17 in a grid | lattice form.
[0012]
The rear end portion 15 behind the slit forming portion 17 of the rainwater drain lid 1 is configured as a slit non-forming portion (water passage non-forming portion) in which no slit is formed. Is formed to be about a quarter of the length of the rainwater tank lid 1. A boundary 21 between the surface 5 of the slit non-forming portion 15 and the surface 5 of the slit forming portion 17 is formed as a bent portion, and the surface 5 of the slit non-forming portion 15 is the surface 5 of the slit forming portion 17 (other than the non-deposition portion 19). It is inclined slightly upward with respect to the surface and extends backward. Accordingly, the rainwater drain lid 1 is installed such that the slit forming portion 17 is inclined downward and along the inclination of the shoulder A of the road B, but the slit non-forming portion 15 is substantially horizontal in the installed state. Thus, a large amount of fallen leaves C and the like can be deposited stably.
[0013]
The slit non-forming portion 15 is formed with two rows of small hole rows formed of a plurality of water passing small holes 23 penetrating through the slit non-forming portion 15. It is provided so as to open at the upper end surface of the protruding portion 25 provided on the surface 5 of the non-slit portion 15. Therefore, the upper surface opening of the small water passage hole 23 is located slightly above the surface 5 of the non-slit portion 15. The diameter of the small water passage hole 23 is preferably set to 10 mm to 30 mm so that there is almost no risk of drawing the fallen leaves C and the like and has a sufficient function of allowing rainwater to pass through and dropping. Further, as shown in FIG. 4, a groove 26 may be formed between the small hole rows, and a step may be formed on the upper surface opening of the small water passage hole 23 (the small water passage hole 23). Is open on the surface 5). With this configuration, it is possible to prevent the fallen leaves C and the like from blocking the upper surface opening of the small water passage hole 23 as a whole, and as a result, the inflow of rainwater is hindered.
[0014]
FIG. 5 is a diagram showing a moving path of the fallen leaves C on the rainwater tank lid 1.
[0015]
Of the fallen leaves C that move on the lid surface 5 of the rain gutter lid 1 together with rainwater flowing in from the road B side, the one that heads toward the center part is divided into both sides avoiding the non-deposition portion 19 as shown by the arrow X, and slits It moves in the non-forming part 15 direction. Therefore, since the fallen leaves C do not accumulate on the non-deposition part 19, even if the fallen leaves C are deposited on the other surface 5 of the slit forming part 17 of the rainwater tank lid 1, the rainwater tank lid 1 Rainwater heading toward the center portion passes through the water passage slit 7 of the non-deposition portion 19 and smoothly flows down into the rainwater basin D.
[0016]
FIG. 6 is a view showing a state when the cleaning device is approaching the rainwater drain lid 1.
[0017]
Road B is periodically cleaned using a road sweeper (not shown). The road sweeper has a cleaning device 31 provided with an annular brush 29 on a disk body 27. The cleaning device 31 is rotated in a fixed direction (see arrow Y), and along the road B or the shoulder A (arrow Z). (Refer to) Scrape and collect the fallen leaves C and soil accumulated on the shoulder A while moving. Therefore, the fallen leaves C and earth and sand on the lid surface 5 of the rainwater tank lid 1, particularly on the non-slit portion 15, are scraped in a direction crossing the road B and collected by a collection device (not shown). (Refer to the thick arrow), the water passage slit 7 is formed so as to extend in a direction crossing the road B, and extends or coincides with or substantially coincides with the direction of scraping the fallen leaves C and earth and sand. There is no such thing as a large drop from the water slit 7. On the other hand, for example, if the water passage slit is formed so as to extend in the length direction of the road B, when the fallen leaves C and the like are scraped out, they collide with the inner wall surface of many slits, and fallen leaves A large amount of C or the like may fall into the rainwater tank D from the water passage slit.
[0018]
【The invention's effect】
As described above, the water collecting road surface cover of the present invention can effectively prevent fallen leaves and the like from being drawn into the water outlet, and has a sufficient function of collecting rain water on the road into the rain gutter or the gutter. It is what you have.
[Brief description of the drawings]
FIG. 1 is a view showing an installed state of a rainwater drainage lid which is a kind of water collecting road surface cover to which the present invention is applied.
2 is a cross-sectional view taken along line II-II in FIG.
FIG. 3 is an end view taken along line III-III in FIG.
FIG. 4 is a diagram showing a small hole array having another configuration.
FIG. 5 is a diagram showing a moving path of fallen leaves on a rainwater tank lid.
FIG. 6 is a diagram showing a state when the cleaning device is approaching a rainwater tank lid.
FIG. 7 is a plan view showing a state in which fallen leaves are drawn when a water inlet is provided in a direction along the road shoulder.
FIG. 8 is a cross-sectional view showing a state in which fallen leaves are drawn when a water passage is provided in a direction along the road shoulder.
[Explanation of symbols]
1 Rainwater drain lid (collection road surface lid)
5 Lid surface 7 Water passage slit (water entrance)
A Shoulder B Road

Claims (2)

A water collection road surface lid formed with a water passage slit installed on the road shoulder so that the lid surface has the same or almost the same height as the road shoulder surface,
A central portion or a substantially central portion of the lid surface is configured as a convex non-deposited portion, and both sides of the non-deposited portion on the lid surface in a direction perpendicular to the road crossing direction are formed in a planar shape, and A slit non-forming part extending along the road shoulder with an appropriate width is provided on the road end side of the water passing slit on the lid surface, and the slit non-forming part is provided with a plurality of small water passing holes. The water collecting road surface cover , wherein the water passage small hole is formed so as to open to an upper end surface of the protruding portion provided on the surface of the slit non-forming portion . A water collection road surface lid formed with a water passage slit, which is installed on the road shoulder so that the lid surface has the same or almost the same height as the road shoulder surface,
A central portion or a substantially central portion of the lid surface is configured as a convex non-deposited portion, and both sides of the non-deposited portion of the lid surface in a direction orthogonal to the road crossing direction are formed in a planar shape, and A slit non-forming portion extending along the road shoulder with an appropriate width is provided on the road end side of the water passage slit on the lid surface, and the surface of the slit forming portion where the water passage slit is formed is directed toward the road end side. A water collection road surface lid, which is inclined downward and the surface of the slit non-forming portion is substantially horizontal.

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