JPH0211515Y2 - - Google Patents

Description

[Detailed Description of the Invention] <<Industrial Application Field>> The present invention relates to a block made of precast concrete for use in a snow drifting groove that contributes to snow removal in urban areas in areas with heavy snowfall.

<<Prior Art>> In conventional snow drifting grooves, the inner side walls are either vertical or tilted slightly downward to narrow the width of the groove. FIG. 8 is a longitudinal sectional view of a conventional snow drifting groove. This is composed of a block integrally formed with a side wall 21 and a bottom plate 22, and the inner surface of the side wall 21 is sloped so that the groove width becomes narrower as it goes downward. For this reason, the snow that falls in large quantities gets clogged at the top of the groove and forms a shelf 23, causing the lower layer of running water to 23.
4 flowed unnecessarily under this shelf, resulting in the snow not functioning as a ditch.

Additionally, in winter, the openings of the snow ditches were not covered due to the need for snow removal work, which was dangerous.

[Problems that the invention aims to solve] As mentioned above, this invention solves the problem that the fallen snow gets clogged at the top of the groove, and the snow either does not flow at all or only flows in a very small amount compared to the amount of water flowing. However, the present invention provides a block for constructing a snow-drifting groove that secures the maximum amount of snowfall relative to the amount of flowing water and ensures safety even in winter.

<Means for Solving the Problems> The present invention is a block for a drifting snow gutter, which is formed by integrally connecting the upper ends of two opposing side walls with two front and rear beams, and A block for a drifting snow gutter, characterized in that the inner surface of the facing side wall is inclined downward so as to widen the gutter width, and the upper end has a lid receiving stepped part with a groove into which a net is fitted. It is.

<<Operation>> In a snow-flowing groove constructed using a block having the above configuration, the inner surface of the side wall gradually recedes from the snow-falling opening at the top toward the flowing water surface at the bottom, expanding the width of the groove. Because of this, fallen snow naturally has a hard time adhering to the side walls, and will definitely fall into the running water and be washed away. The inclination of the inner surface of the side wall of the block serves as a draft slope when demolding the formwork during block manufacture, making it easy to demold the formwork. In addition, since the lid receiving step at the upper end of the side wall has a groove into which a protective net is fitted, the protective net can be fitted into the groove so that it does not protrude from the lid receiving surface. . The concrete lid is placed on the lid receiving surface of the lid receiving step, and in the winter, the concrete lid can be removed to remove snow and ensure safety with the protective net, and in the summer, the concrete lid makes it even safer. can be ensured.

《Example》 Fig. 1 is a perspective view showing the construction state of a snow drifting groove using block 1 which is an embodiment of the present invention, Fig. 2 is a plan view of the connecting part of block 1, and Fig. 4 is a central vertical sectional view of block 1, FIG. 5 is a schematic sectional view of the formwork for manufacturing block 1, and FIG. 6 is another embodiment of block 1.
4 is a front view, and FIG. 7 is a partial plan view of a connecting portion of blocks according to another embodiment. As shown in FIG. 1, the block 1 has two side walls 2 facing each other.
and two beam parts 3 that integrally connect the front and rear upper ends of these parts. As is clear from FIG. 4, the inner surface of the side wall portion 2 is inclined so that the width of the groove increases downwardly, and the outer surface is formed vertically. When the depth of the groove is required to be deep, that is, when the height of the block is increased, the outer surface of the side wall can be sloped in the same manner as the inner surface in order to maintain the thickness of the lower end of the side wall. Side wall portion 15 of block 14 shown in FIG.
is an example of this.

Two vertical grooves 8 are formed in the front connecting surface 6 and the rear connecting surface 7 of the block 1, as shown in FIGS. 1-3. The connection of block 1 is
As shown in the figure, pillow materials 9 are arranged at predetermined intervals.
This is done by placing the blocks 1 continuously on top and filling the holes formed by the vertical grooves 8 in the connecting parts with mortar 12 to stop water, as shown in FIGS. The method of connecting the blocks is not limited to this, and various known methods are possible. For example, as shown in FIG. They may be fitted and the gap may be filled with mortar 18.

At the upper end of the side wall 2 of the block 1, which is sandwiched between the beams 3, there is a lid holder step 4 for placing a concrete lid (not shown), and a protective net 11 is provided on the lid holder step 4. A groove 5 for fitting is formed. In winter, only a protective net 11 is fitted into the snowfall opening, and snow is thrown into the groove from between the meshes of the net 11. In the summer, for safety, the snowfall opening can be covered with a concrete lid. The concrete lid is placed on the lid holder 4, but at this time, the net 1
1 is fitted into the groove 5 and does not protrude above the lid receiving step 4, so there is no need to remove it.

As shown in FIG. 1, the bottom plate of a drifting snow ditch constructed using the block of the present invention is formed by pouring cast-in-place concrete 10 over the entire bottom of the ditch with an appropriate slope.

For manufacturing the block of the present invention, for example, a mold shown in FIG. 5 is used. In the figure, the formwork 13 consists of an inner mold 13a, a side plate 13b, a bottom plate 13c, and the like. After the concrete in the formwork has solidified, the formwork is removed, and at this time the inner mold 13a is moved in the direction of arrow B.
pulled in the direction. In the case of the block of the present invention, the slope of the inner surface of the side wall becomes the draft angle of the inner mold, and the inner mold 1
3a is extremely easy to demold.

《Effects of the invention》 Since the inner surface of the side wall of the invented snow ditch block is sloped downward to widen the groove width, the snow that falls into the drifting snow ditch created using this block is sloped at the upper part of the groove. It immediately drops into running water and flows without clogging. Therefore, the maximum amount of snow corresponding to the amount of water flowing can be treated. Further, the slope of the inner surface of the side wall portion becomes a draft slope when demolding the mold, especially the inner mold, and the mold can be easily demolded, so there is no need to squeeze the inner mold, and the mold structure becomes simple. Furthermore, safety in winter is ensured by fitting a protective net into the groove of the lid receiving step at the upper end of the side wall, and a concrete lid can be placed on the lid without removing the net outside of winter.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the construction state of a snow drifting groove using block 1, which is an embodiment of the present invention, Fig. 2 is a plan view of the connecting part of block 1, and Fig. 3 is a line A--A in Fig. 2. A sectional view taken along line A, FIG. 4 is a longitudinal sectional view at the center of block 1, FIG. 5 is a schematic sectional view of the formwork for manufacturing block 1, and FIG. 6 is another example of block 1.
4 is a front view, FIG. 7 is a partial plan view of a connecting portion of blocks according to another embodiment, and FIG. 8 is a sectional view of a conventional snow drifting groove. 1...Block for drifting snow groove, 2...Side wall part, 3...
...Beam part, 4...Lid holder step part, 5...Groove, 6,7...
Connection surface, 8... Vertical groove, 9... Pillow material, 10... Cast-in-place concrete, 11... Net, 12... Mortar, 13... Formwork, 14... Block for drifting snow groove,
15...Side wall portion, 16...Vertical groove, 17...Protrusion,
18...mortar, 21...side wall, 22...bottom plate, 23...shelf, 24...running water.

Claims (1)

[Scope of utility model registration request] A snow drifting groove block formed by integrally connecting the upper ends of two opposing side walls with two front and rear beams, wherein the inner surfaces of the opposing side walls expand downward to widen the groove width. 1. A block for a drifting snow gutter, characterized by having a lid receiving stepped part which is sloped as shown in FIG.