Roadside drainage system

Abstract

This solution addresses issues such as the accumulation of small amounts of sediment that flow in with rainwater over time in U-shaped drainage channels beneath the road surface, the growth of grass and plants mixed in with the sediment due to sunlight, impairing drainage, and the risk of pedestrians slipping due to the exposure of these plants to the stainless steel grating surface. [Solution] A metal intermediate frame 3 closes the upper end opening 2 of a U-shaped drainage channel 1, and a stainless steel grating 4 is placed on the metal intermediate frame 3 and finished to be substantially flush with the road surface material, wherein rainwater flows from the narrow gaps in the stainless steel grating 4 to the space of the metal intermediate frame 3 and further to the U-shaped drainage channel 1, and one side plate 7 of the metal intermediate frame 3, which sits on the stepped edge of one of the U-shaped drainage channels 1, is formed as an inclined surface that slopes downward.

Description

Technical Field

[0001] The present invention relates to a road gutter, and more particularly to a road drainage gutter device for rainwater or the like laid at the entrance of a building.

Background Art

[0002] Thus, it is essential that small items such as coins and key holders can be dropped into the U-shaped drainage gutter body from this metal grating frame, and further that the grating frame can be temporarily removed during cleaning or the like. From such a background, the following prior art documents exist.

Prior Art Documents

Patent Documents

Patent Document No. 1

Patent Document No. 2

[0003] Thus, in particular, in Patent Document No. 1, at least the four corners of the grating frame are fixed with bolts, and the driver operation is troublesome. Therefore, there is Patent Document No. 2 created by one of the inventors of the present application. This is to consider the walking of women in an office area. While maintaining the capacity of the U-shaped drainage gutter body, by narrowing the width of the grating frame covering the upper opening as much as possible, the grating exposed on the road surface is made of stainless steel to maintain the sensibility, and for the intermediate frame located under the road surface and not requiring consideration of wear due to walking, it is made of metal with rust prevention treatment such as zinc plating. Therefore, compared with manufacturing the grating and the intermediate frame integrally with stainless steel, cost reduction can be achieved, but further unexpected problems have arisen.

[0004] Specifically, as shown in Figure 4, in consideration of the rapid drainage of rainwater, the inner groove width (R) of the U-shaped drainage channel (b) beneath the road surface is made as wide as possible, and a stainless steel grating (a) is placed between the rising vertical piece (e) and one side piece (f) of the metal intermediate frame (d). Furthermore, since this one side piece (H) is seated on the rim (C) of the U-shaped drainage channel (B), its lower end (G) forms a horizontal surface. As a result, small amounts of sediment that flow in with rainwater accumulate on the rim (C) side of this one side piece (G). Grass and flower particles mixed in with the sediment also grow when exposed to adequate sunlight, impairing drainage and, in some cases, becoming exposed on the surface of the stainless steel grating. This also poses a risk of slipping while walking due to the grass and flowers.

[0005] [Overview of the Initiative] [Problems that the invention aims to solve]

[0006] This invention addresses a new technical challenge in maximizing the width of the inner groove of a U-shaped drainage channel beneath the road surface. Specifically, because one side of the metal intermediate frame seated at the rim of the U-shaped drainage channel is formed in a horizontal plane, small amounts of sediment flowing in with rainwater accumulate over time. Grass and plant particles mixed in with the sediment also grow when exposed to sunlight, impairing drainage and becoming exposed on the surface of the stainless steel grating. This also poses a risk of pedestrians slipping on the grass and plants. [Means for solving the problem]

[0007] The present invention comprises a U-shaped drainage channel body of a certain length, which is formed by appropriately mixing cement and synthetic resin and buried beneath the road surface; a metal intermediate frame which closes the upper end opening of the U-shaped drainage channel body and consists of one end that sits on one edge step of the upper end opening and the other end that sits on the other edge step, and a top plate that supports road surface materials such as tiles and bricks, and is treated with rust prevention treatment such as zinc plating; and a stainless steel grating which is placed between a rising vertical piece formed on the top plate of the metal intermediate frame and one side piece of the metal intermediate frame and finished to be substantially flush with the road surface material, wherein the narrow gaps in the stainless steel grating form a rainwater channel from the space between the rising vertical piece and the one side piece of the metal intermediate frame, the inside of the top plate, and further to the U-shaped drainage channel body, and the one side piece of the metal intermediate frame that sits on one edge step of the U-shaped drainage channel body is formed as an inclined surface that slopes downward. [Effects of the Invention]

[0008] According to claim 1, one side piece of the metal intermediate frame that sits on the stepped edge of one side of the U-shaped drainage channel body is formed as an inclined surface that slopes downward, so even if a small amount of sediment flows in with the rainwater, it does not remain on the inclined side piece, and the particles of grass and flowers, along with the sediment, quickly and properly flow into the U-shaped drainage channel body and are discharged.

[0009] According to claim 2, one side piece of the metal intermediate frame is formed to widen towards the U-shaped drainage channel located below it, with the opposing rising vertical piece forming a rainwater channel, so that soil and sediment flow into the U-shaped drainage channel at an accelerated rate along with rainwater and are discharged. [Brief explanation of the drawing]

[0010] [Figure 1] Cross-sectional view showing a roadside drainage system. [Figure 2] Partially enlarged cross-sectional view of the same object. [Figure 3] Exploded perspective view of the same object [Figure 4] A partially enlarged cross-sectional view showing a conventional example. [Modes for carrying out the invention]

[0011] The present invention will be described below with reference to the drawings of embodiments. Figure 1 is a cross-sectional view of a road drainage system, which consists of a U-shaped drainage channel body 1 that is buried under a predetermined road surface H while maintaining a water slope and connecting multiple units of a desired length, a metal intermediate frame 3 that closes the upper end opening 2 of the U-shaped drainage channel body 1 and is interposed between it and the road surface material Ha such as tiles or bricks to separate Ha and 1, and a metal grating 4 that is finished to be substantially flush with the road surface material Ha and is placed on the metal intermediate frame 3.

[0012] Specifically, the U-shaped drainage channel body 1 is made of polymerized concrete (PCC), which is a mixture of synthetic resin, cement, and aggregates such as sand and gravel, and is formed to a length of approximately 1 m. The metal intermediate frame 3 may be treated with anti-corrosion treatment such as zinc plating, or it may be made of zinc alloy (JIS H2201). The metal grating 4 is made of stainless steel. The metal intermediate frame 3 is formed in the shape of an L-shaped box frame with a bottom opening, consisting of a vertical piece 6 rising from the top plate 5 that supports the road surface material Ha such as tiles or bricks, a side plate 7 facing the vertical piece 6 across a certain space Y, and a side plate 8 on the other side other than the side plate 7 that hangs down and surrounds the underside of the top plate 5. Furthermore, the term "support for road surface materials Ha such as tiles and bricks" as used here refers to the act of supporting and receiving them.

[0013] One side plate 7 of the metal intermediate frame 3, which is on the stainless steel grating 4 side, is formed to be longer than the vertical piece 6. That is, this longer side plate 7 makes the upper edge 1a of the U-shaped drainage channel 1 approximately 1 / 3 the height of the other upper edge 1b, so that rainwater falls into the U-shaped drainage channel all at once, improving the drainage effect and preventing it from overflowing onto the road.

[0014] The left and right receivers 9 made of metal for supporting the intermediate frame 3 are formed in an H shape and are composed of an upper piece 9a that seats on the upper end opening edges 2a, 2b of the U-shaped drain body 1, and inner and outer pieces 9b, 9c that sandwich the upper end opening edges 1a, 1b. The inner pieces 9b face each other inward, and the left and right outer pieces 9b, 9c prevent the lateral displacement of the metal intermediate frame 3 and seat on the upper end opening edges 1a, 1b of the U-shaped drain body 1 at a predetermined position.

[0015] The height of the upper port edges 1a, 1b of the U-shaped drain body 1 is formed to be approximately one-third lower than that of the other upper port edge 1b on the side where the rainwater flow path is formed. One side piece 7 is extended and seated, so that the sediment flowing in with the rainwater does not accumulate at the inlet edge portion and smoothly flows into the U-shaped drain body 1.

[0016] Furthermore, as a means for connecting the intermediate frame 3 and the grating 4, a connecting plate 10 is used. This is provided with a slit 12 into which the flat plate 11 of the grating 4 is inserted, and notch portions 13, 14 are provided on the intermediate frame 3 and the flat plate 11 of the grating 4 respectively for fitting so as not to shift in the longitudinal direction, and it is stored in a predetermined position during the construction work.

Explanation of Signs

[0015] H Road surface Ha Road surface material Y Certain space 1 U-shaped drain body 2 Upper end opening 3 Metal intermediate frame 4 Metal grating 5 Top plate 6 Upright vertical piece 7 One side plate 8 Side plate 9 Left and right receivers 10 Connecting plate 11 Flat plate 12 Slit 13 Notch portion 14 Notch portion

Claims

1. ▲1▼A U-shaped drainage channel body of a certain length is formed by appropriately mixing cement and synthetic resin, and burying it beneath the road surface. ▲2▼The upper end opening of the U-shaped drainage channel body is closed, and the intermediate metal frame consists of one end that sits on one edge step of the upper end opening and the other end that sits on the other edge step, and a top plate that supports road surface materials such as tiles and bricks, and is also treated with rust prevention treatment such as galvanizing, ▲3▼A stainless steel grating that is placed between the vertically rising piece formed on the top plate of the metal intermediate frame and one side piece of the metal intermediate frame, and finished to be substantially flush with the road surface material, ▲4▼Moreover, rainwater flows through the narrow gaps in the stainless steel grating to the space between the vertical rising piece of the metal intermediate frame and the one side piece, to the inside of the top plate, and further to the U-shaped drainage channel body, ▲5▼A road drainage device characterized in that one side piece of the metal intermediate frame that sits on one edge step of the U-shaped drainage channel body is formed as an inclined surface that slopes downward.

2. The road drainage device according to claim 1, characterized in that one side piece of the metal intermediate frame is formed in a downward-widening shape so as to widen toward the U-shaped drainage channel body located below it, with a rising vertical piece facing it that forms a rainwater channel.

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