JPS6016655Y2 - Rubber bag undulating weir with spoiler - Google Patents

Description

[Detailed description of the invention] This invention relates to a rubber bag undulating weir with a spoiler that prevents negative effects such as abnormal vibrations on the rubber bag undulating weir during overflow. .

In this type of rubber bag undulating weir, until the river flow increases and the dam collapses, water overflows over the upright dam and its overflow depth gradually increases.

In other words, since the water flows down from the entire upper part of the rubber bag undulating weir at the same time, the air in the cavity between the downstream side of the dam and the falling water is carried away by the water flow, and a depressurization phenomenon occurs, causing the dam body to It causes vibrations in the back and makes abnormal noises.

Conventionally, this phenomenon occurs when an unexpected extra force is applied to a structure such as a rubber bag undulating weir that dams up river water by expanding a flexible, water-resistant, airtight bag. This had the disadvantage of making the weir function unstable and causing damage to the weir body.

In order to eliminate the above-mentioned drawbacks, the inventor has already designed a spoiler that is in contact with the rubber bag undulating weir body separately from the rubber bag undulating weir, and has also incorporated this spoiler into the rubber bag undulating weir. We have developed a rubber bag undulating weir with a spoiler that is installed on the riverbed upstream at regular intervals in parallel in the direction of the ice floe, allowing the spoiler to separate the falling water from the air outside the dam body and the air behind the dam body. By creating a ventilation gap between the body and the body, we succeeded in preventing the above-mentioned abnormal vibrations.
No. 16).

By the way, in order for a large amount of overflow water to be sufficiently divided by the spoiler at the upper part of the rubber bag undulating weir and to fall to the falling point downstream of the dam in the divided state, the tip of the spoiler must be It is necessary to protrude long and slightly horizontally in the downstream direction.

However, the conventional spoiler was just a single rod-shaped body attached to the subfloor on the upstream side so that it could rise and fall freely, so the tip of the spoiler could not reach the point where the overflow water started falling, and once the overflow water was cut off. However, there was a drawback that they would merge again.

Therefore, this invention has been proposed in a rubber bag body undulating weir with a spoiler in which the spoiler in contact with the rubber bag body undulating weir is shaped separately from the rubber bag body undulating weir, and the middle part of the spoiler main body can be bent and shaped. The spoiler is bent horizontally from the middle part according to the undulations of the weir, so that the tip of the spoiler can easily reach the starting point of the overflow. This was developed for the purpose of providing a rubber bag undulation weir with a spoiler that completely divides the flow and reaches the point of fall.

Now, one embodiment of the rubber bag undulating weir with a spoiler according to this invention will be described based on the drawings. 1 is the rubber bag undulating weir body, 2 is a metal spoiler in contact with this weir body, This spoiler 2 is formed to be bendable by a hinge 3 provided in the middle part, and is attached to a river bed 4 on the upstream side of the weir body 1.
It is attached so that it can freely rise and fall in the direction of water flow via a hinge 5 provided in the water flow direction.

As shown in FIG. 2, a desired number of spoilers are arranged in parallel at appropriate intervals in the direction of water flow.

Further, 6 is the tip of the spoiler, and this tip 6 slightly protrudes from the protrusion (surface) 7 of the weir body 1 toward the downstream side.

Reference numeral 8 indicates the starting point of overflow, 9 indicates a mounting bracket, and 10 indicates falling water.

As the upper part of the spoiler 2 bends in the downstream direction according to the undulations of the weir body, the tip 6 of the spoiler easily reaches the fall start point 8 of the overflow, and the flowing water starts falling. They are completely separated at part 8 and do not merge until they reach the drop point.

As described above, according to the rubber bag undulating weir with a spoiler according to this invention, the spoiler reliably forms a ventilation gap between the outside air and the cavity a on the downstream side of the rubber bag undulating weir. This has excellent effects such as being able to prevent abnormal vibrations and abnormal noises due to the depressurization phenomenon in the cavity a, and not causing damage to the rubber bag body undulation weir.

[Brief explanation of the drawing]

The drawings show an embodiment of the spoiler-equipped rubber bag undulating weir according to the present invention, and FIG. 1 is a longitudinal sectional side view in an upright state, and FIG. 2 is a front view. 1... Rubber bag undulating weir body, 2... Spoiler 13... Hinge, 4... River bed, 5... Hinge, 6... Spoiler tip, 7... Weir protrusion (surface), 8...
・Overflow falling start part, 9...Mounting bracket, 10・
...Falling water, a...Cavity part.

Claims (1)

[Scope of utility model registration request] In a rubber bag body undulating weir with a spoiler in which a spoiler in contact with the rubber bag body undulating weir body is shaped separately from the rubber bag body undulating weir body, the middle part of the spoiler body is shaped so as to be bendable. Features a rubber bag undulating weir with a spoiler.