JP-3255751-U - Cover for drainage ditch

JP3255751UJP 3255751 UJP3255751 UJP 3255751UJP-3255751-U

Abstract

[Problem] To provide a drainage ditch cover with a simple structure that provides sufficient drainage. [Solution] The gutter cover 1, which covers the opening of the gutter, comprises a rectangular flat concrete block 10 and a metal angle material 20 that is attached to both ends of the concrete block 10 in the width direction and has a vertical surface and a horizontal surface 20b. The angle material 20 is positioned so that the vertical surface is in contact with the end surface of the concrete block 10 in the width direction, and the horizontal surface 20b is substantially the same as the upper surface 10a of the concrete block 10. A protrusion 1a is provided at one end of the gutter cover 1 in the longitudinal direction, projecting outward in the longitudinal direction. [Selection Diagram] Figure 2

Inventors

岡崎雄次
岩見俊也

Assignees

カワノ工業株式会社

Dates

Publication Date: 20260507
Application Date: 20260305

Claims (5)

A gutter cover that covers the opening of a gutter, Rectangular flat concrete block, The concrete block is connected to both ends in the width direction and comprises a metal angle material having a vertical surface and a horizontal surface, The angle material is positioned such that its vertical surface is in contact with the end surface in the width direction of the concrete block, and its horizontal surface is substantially flush with the upper surface of the concrete block. A gutter cover characterized in that a protrusion projecting outward in the longitudinal direction is provided at one end of the gutter cover in the longitudinal direction.
The drain cover according to claim 1, characterized in that the protrusion is integrally formed with the concrete block.
The drain cover according to claim 2, characterized in that the surface of the other end of the concrete block in the longitudinal direction is formed flat.
The drain cover according to claim 1, characterized in that a recess into which the protrusion can be fitted is provided at the other end in the longitudinal direction of the drain cover.
A groove extending in the longitudinal direction is provided on the upper surface of the concrete block. The gutter cover according to any one of claims 1 to 4, characterized in that the bottom of the groove is sloped so as to gradually decrease from the longitudinal center toward both longitudinal ends.

Description

This invention relates to a cover for a drainage ditch, which is used by placing it over the opening of the drainage ditch. U-shaped concrete drainage ditches are widely used as drainage facilities in roads, sidewalks, parking lots, etc. To ensure pedestrian safety and vehicle access, multiple concrete or metal-reinforced drainage covers are installed side-by-side at the openings of these ditches. Generally, drainage ditch covers are primarily constructed from rectangular, flat concrete blocks, with metal components sometimes added for increased strength as needed. When drainage ditch covers are placed adjacent to each other in the longitudinal direction, the ends tend to stick together, hindering the smooth flow of rainwater into the drainage ditch. Therefore, drainage holes or recesses are often provided in the cover body; however, increasing the size of the opening can lead to reduced cover strength and safety concerns for pedestrians. To address these challenges, a structure has been proposed that improves drainage by, for example, providing steel angles on the sides of the concrete block body and creating slit-shaped gaps between adjacent drainage ditch covers (see Patent Document 1). While sufficient drainage was achieved with the drainage ditch cover described in Patent Document 1, there was a need for a drainage ditch cover that could improve drainage with a simpler structure. Utility Model Registration No. 3197732 Publication This diagram illustrates a gutter cover according to the present invention, where (a) is a cross-sectional view of a gutter cover placed in a U-shaped concrete gutter, viewed in a cross section perpendicular to the longitudinal direction, and (b) is a cross-sectional view showing an enlarged view of the area near the angle material.This figure shows a drainage ditch cover according to the first embodiment of the present invention, where (a) is a perspective view and (b) is a plan view showing drainage ditch covers arranged in a row.This figure shows a drainage ditch cover according to a second embodiment of the present invention, where (a) is a perspective view and (b) is a plan view showing drainage ditch covers arranged side by side.This figure shows a drain cover according to a third embodiment of the present invention, where (a) is a plan view and (b) is a cross-sectional view showing the A-A section of (a). Next, embodiments of a drainage ditch cover to which the present invention is applied will be described with reference to the drawings. While the embodiments described below are preferred embodiments of the present invention and therefore have various technically advantageous limitations, the scope of the present invention is not limited to these embodiments unless specifically stated in the following description to limit the present invention. (First Embodiment) First, the basic structure of the gutter cover 1 according to the present invention will be described. As shown in Figure 1(a), the gutter cover 1 is positioned over the opening of the gutter S and is provided to cover the opening of the gutter S. The upper surface of the gutter cover 1 is formed to be substantially flat, and it has a flat structure that does not easily create a step difference with the road surface. This ensures safety and ease of driving when pedestrians and vehicles pass over it. The gutter cover 1 according to this embodiment comprises a rectangular flat concrete block 10 and metal angle members 20 provided at both ends of the concrete block 10 in the width direction. As shown in Figure 1(b), the angle members 20 are composed of a vertical plate 21 and a horizontal plate 22 that intersect at right angles to each other. The gutter cover 1 is suspended over the gutter S by placing the horizontal plate 22 on the edge E of the gutter S. The angle members 20 have a vertical surface 20a and a horizontal surface 20b, with the vertical surface 20a provided on the vertical plate 21 and the horizontal surface 20b provided on the horizontal plate 22. The concrete block 10 has an upper surface 10a, an end surface 10b at the widthwise end, an end surface 10c at one longitudinal end, and an end surface 10d at the other longitudinal end. The angle member 20 is positioned so that its vertical surface 20a is in contact with the end surface 10b, and its horizontal surface 20b is provided to be substantially flush with the upper surface 10a. Therefore, the upper surface of the gutter cover 1 is formed to be substantially flat. Furthermore, in this first embodiment, the positions of the end surface 10c of the concrete block 10 and the end surface 20c of the angle member 20 are aligned in the longitudinal direction, and similarly, the positions of the end surface 10d of the concrete block 10 and the end surface 20d of the angle member 20 are also aligned in the longitudinal direction. Reinforcing bars (not shown) are arranged inside the concrete block 10, and the reinforcing bars and angle material 20 are join