JPS6319424Y2 - - Google Patents

Description

[Detailed explanation of the idea] "Industrial application field" This proposal concerns road gutter covers.

``Conventional technology'' In order to collect the large amount of ash that has fallen from volcanic smoke from volcanoes such as Sakurajima, Kagoshima Prefecture, into the gutter and drain it out with water, it is necessary to form a relatively large ash collection hole in the gutter cover. . However, when a large ash collection hole was formed, the strength of the lid was significantly reduced, resulting in a lack of safety. Although it is good to remove the lid, it is dangerous for road traffic if it is removed.

``Problems to be solved by the invention'' The purpose of this invention is to obtain a gutter cover that has a large ash collection hole, is strong, and highly safe.

``Means for solving the problem'' This proposal forms a lid hanging step on the inner surface of the opening of the side gutter, and in the concrete lid placed on the same step, a notch is formed at the edge of the lid along the step. , a protrusion that hangs over the step is formed at both ends of the notch, the protrusion length of the protrusion is larger than the protrusion length of the step, and the sides of the protrusion and the notch are covered with a single steel plate, and the same steel plate is formed. A steel covering edge is provided on the upper edge of the notch, and the width of the covering edge is smaller than the protruding length of the protrusion.

``Operation'' Therefore, the road gutter is closed by the concrete cover fitted and supported by the cover step. At this time, the tip steel plate surface of the protrusion is in contact with the upright inner surface of the opening, and since the protrusion length of the protrusion is larger than the protrusion length of the step, there is a lower ash collection gap t between the tip edge of the step and the steel plate surface of the notch. can be formed. Further, it is possible to maintain an upper ash collecting gap t' between the tip of the steel covering edge and the upright inner surface, and a wide space is formed between both gaps t and t'. The ash that has entered the chamber through the upper gap t' accumulates in the same chamber and can further descend through the lower gap t without clogging the inside of the side gutter.

"Example" The upper end opening of the concrete road gutter 1 is upright, and lid hanging steps 2, 2 are provided protruding from the inner surfaces 8, 8, and a concrete cover 3 is placed on the steps 2, 2. and close the opening (the first
Fig. 2). A rectangular notch 4 is formed along the step 2 at the edge of the lid 3, and rectangular projections 5, 5 extending over the step 2 are formed at both ends of the notch 4.
The protrusion length L of the protrusions 5, 5 is larger than the protrusion length l of the step 2, and a lower ash collection gap t defined by L-l is maintained. The side surfaces of such projections 5 and notches 4 are covered with a single steel plate 6, and the steel plate 6 is covered with reinforcing bars 9.
are welded into one body. A steel covering edge 7 is provided on the upper edge of the notch 4 of the steel plate 6, and the width w of the covering edge 7 is smaller than the protruding length L of the protrusion 5. Therefore, the upper ash collection gap t' having a width L-w is opened, and a wide cavity 10 is formed between the two gaps t and t'. In the figure, reference numeral 11 indicates a support plate for the covering edge 7, and reference numeral 12 indicates a small notch formed on the outside of the protrusion 5 for collecting ash.

``Effect'' Since this project is constructed as described above, volcanic ash falls from the upper gap t', passes through the wide cavity 10, and then passes through the lower gap t.
Not only can it be easily lowered into the side gutter 1 and drained by the running water in the side gutter without the risk of clogging, but also the protrusions 5, 5 supporting the weight of the concrete lid 3 are made of a single steel plate 6. The notch 4 can be formed relatively long and wide, making it easy to collect ash, and the upper surface of the notch 4 is reinforced by the covering edge 7. can be covered to ensure traffic safety.

[Brief explanation of drawings]

Figure 1 is a perspective view showing the gutter cover of the present invention, Figure 2 is a vertical sectional view taken along the line A-A in Figure 1, and Figure 3 is the
The plan view of the figure and FIG. 4 are the front views of the concrete lid. 1...Gutter, 2...Lid hanging step, 3...Concrete lid, 4...Notch, 5...Protrusion, L, l...Protrusion length, 6...Steel plate, 7...Steel covering edge, w ……width.

Claims (1)

[Scope of utility model registration request] A step for hanging a lid is formed on the inner surface of the opening of the side gutter, and a notch is formed on the edge of the lid along the step in the concrete lid placed on the step, and a protrusion that hangs over the step is formed at both ends of the notch. The protrusion length is larger than the protrusion length of the step, and the protrusion and the notch are covered with a single steel plate on their side surfaces, and the upper edge of the cutout part of the steel plate is provided with a steel covering edge. A side gutter cover provided with a covering edge whose width is smaller than the protruding length of the protrusion.