JPH0346073Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Purpose of the invention] (Industrial field of application) The present invention is a contracted snow groove and a snow groove used as road facilities for the purpose of snow removal and snow removal. The present invention relates to a vena contraction device.

(Prior art) Concrete snow-drifting ditches that have been commonly used have the disadvantage that when the snow-drifting ditch becomes full of snow, it creates a snow-clogging phenomenon and blocks the water, which prevents flooding. It was often hot.

Therefore, recently, a stainless steel plate with screen-like water holes as shown in Figures 7 and 8 has been installed and integrated into an extinguisher by forming bypasses on both inner walls of the snow groove. A snow ditch appeared.

According to this snow-melting groove, when the amount of snow thrown is small, the snow is washed away with running water in the condition shown in Figure 7, and when the amount of snow thrown is large or snow is clogged, the snow is washed away in the condition shown in Figure 8.
As shown in the figure, the flowing water in the main channel is obstructed by packed snow and escapes towards the bypass through the lower sprinkler holes provided in the board, raising the water level on the bypass side and causing a shower from the upper sprinkling holes. The idea is that the water will be returned to the main canal and poured into the packed snow to create a snow-melting effect.

(Problem to be solved by the invention) However, with such a snow drifting gutter, it is necessary to install a stainless steel plate over the entire length of the roadside gutter, which is costly, and it is difficult to combine with a dedicated precast gutter. Therefore, it cannot be used unless the front part is newly installed, it cannot be used for the existing snow drifting groove, and it tends to be too expensive to replace it. An even more important problem is that the water level in the bypass rises only when snow becomes clogged, creating a shower effect, which makes it difficult to produce a sufficient effect naturally.

This invention enables effective snow drifting and snow removal as described below, and is suitable for newly constructed snow drifting grooves as well as existing snow drifting grooves. It is an object of the present invention to provide a flow contraction device for a groove.

[Structure of the idea]

(Means for Solving the Problems) In order to achieve the above object, the present invention sequentially varies the opening ratio from one longitudinal end to the other end of the flow contraction device to form water guide holes, water sprinkling holes, and damming parts. The pair of plate bodies are curved so that the opposing surfaces become convex curved surfaces, and the supports are passed over to form an integral unit. In addition, the damming part side is located on the downstream side to form a snow drift groove. It is preferable that the water sprinkling holes in the plate of such a flow contraction device have a smaller opening ratio from the top to the bottom of the plate, and in order to facilitate installation in the existing snow drifting groove, the support It is preferable to include a spring body having elastic force toward the outside.

(Function) A pair of opposing plates has a water guide hole located on the upstream side of the snow drifting groove, so running water is always guided to the water guide hole, but the downstream side acts as a dam, so the flowing water is blocked. The water level is always rising, and the water introduced from the water guide hole is constantly sprayed into the main waterway from the watering hole and poured onto the drifting snow.

(Example) Next, an example of the present invention will be described based on the drawings.

Figure 1 is a front view of the plate forming the contraction device, Figure 2 is a plan view of the snow drifting groove equipped with the contraction device, and Figure 3 is a front view of the plate forming the contraction device.
The figure is a sectional view taken along line A-A in Figure 2, and Figure 4 is B in Figure 2.
-B sectional view, FIG. 5 is an explanatory diagram showing the shape of the water flow at all times in the contracting part, and FIG. 6 is an explanatory diagram showing the water flow situation when the contracting part is clogged with snow. However, in FIG. 2, for convenience of explanation, the lid 12 shown from FIG. 3 onwards is omitted.

In the drawings, 1 is a plate, and 2 is a support for supporting the pair of plates.

As shown in FIG. 1, the plate body 1 has water guide holes 3, water sprinkling holes 4, and damming portions 5 formed with sequentially different opening ratios from one longitudinal end to the other end.
In this example, the water guide hole part is opened at about a quarter of one end so that the opening ratio is 90%, and the water supply hole part is opened at about a quarter of the opening ratio from the top to 70%.
Adjust the hole size so that it is %, 60%, 50%, 0%, and the dam part is 1/4 of the other end.
The extent is such that the aperture ratio is 0%. Note that, of course, the aperture ratio is not limited to this example.

As shown in Fig. 2, the plates 1 made in this way are made into a pair, and are placed facing each other with a distance necessary for installation in a snow drifting groove, with the opposing surfaces being convex curved surfaces. , a supporting member 2 such as a plate or a rod is passed and fixed to the lower part to form an integrated structure. Both sides of the support 2 are provided with spring bodies 6 having elastic force directed outward.

Thus, a flow contraction device 10 is formed, and this flow contraction device 10 is installed in the flow channel of the snow drifting groove 11 with the water introduction hole 3 side positioned on the upstream side and the damming part 5 side positioned on the downstream side, and the flow contraction device 10 is installed as a whole in the flow channel of the snow drifting groove 11. Forms a flowing snow groove.

[Effect of idea]

Since the present invention is constructed as described above, it has the following effects.

First, when such a snow drifting groove 11 is used, the plate 1 of the condenser 10 is curved concavely with respect to the wall surface of the snow drifting groove 11. Flowing water between the holes is dammed by the damming part 5, the water level is constantly increasing as shown in FIG. 5, and water is sprayed from the watering holes 4. Therefore, even if the amount of snow thrown into the snow drifting groove is small, it will be quenched by water discharge from the water sprinkling holes 4, and if snow is clogged, the water flowing between the wall surface and the plate 1 will be dissipated as shown in Figure 6. Then, the water level is further increased and water is discharged from the upper water sprinkling hole 4 to melt the snow. Therefore, it prevents snow clogging and also has a great snow removal effect when snow clogging occurs.

When such a flow contraction device is installed in a snow drifting groove,
Since it brings about the above-mentioned effects, it is sufficient to install it 2 to 3 meters downstream of the snow drifting groove.
It is naturally possible to use the water amount at the snow dumping port for multiple purposes.

Since such a flow condenser device has openings with different opening ratios from the upstream side to the downstream side of the flow channel, it not only makes the water conveyance effective but also dams up the collected water and improves the water sprinkling effect of the water sprinkling section. Make it expensive.

It is possible to balance the water head by increasing the opening ratio of the watering hole at the top and gradually decreasing it as it goes downward. This increases the amount of water sprayed from the upper watering hole and prevents water from overflowing from the snow drifting groove itself.

It is convenient to attach the flow contraction device to a snow drifting groove if the support is provided with a spring body that has an elastic force toward the outside.

[Brief explanation of the drawing]

Figure 1 is a front view of the plate forming the contraction device, Figure 2 is a plan view of the snow drifting groove equipped with the contraction device, and Figure 3 is a front view of the plate forming the contraction device.
The figure is a sectional view taken along line A-A in Figure 2, and Figure 4 is B in Figure 2.
-B sectional view, Figure 5 is an explanatory diagram showing the continuous water flow shape of the contraction part, Figure 6 is an explanatory diagram showing the water flow situation when the contraction part is clogged with snow, and Figures 7 and 8 are explanatory diagrams showing the conventional example. It is a diagram. In the drawings, 1 is a plate, 2 is a support, 3 is a water guide hole, 4 is a water sprinkling hole, 5 is a dam, 6 is a spring body, 10 is a flow contraction device, and 11 is a snow drifting groove.

Claims (1)

[Scope of Claim for Utility Model Registration] A pair of plates having a water guide hole, a water sprinkling hole, and a damming part formed with a convex curved surface by sequentially varying the opening ratio from one longitudinal end to the other end. A flow contraction type characterized in that a flow contraction device is installed in a flow channel with the water guide hole side positioned on the upstream side and the damming part side positioned on the downstream side. Drifting snow ditch. A pair of plates, each having a water guide hole, a water sprinkling hole, and a damming part, with sequentially different opening ratios from one end to the other in the longitudinal direction, are curved and supported facing each other so that the opposing surfaces become convex curved surfaces. A condenser device for drifting snow grooves that is integrated with tools. 3. The condensing flow device for a snow-drifting groove according to claim 2, wherein the opening ratio of the watering holes decreases from the top to the bottom of the plate. 3. The flow contraction device for a snow drifting groove according to claim 2, wherein the support device includes a spring body having an elastic force toward the outside of the support device.