JPS629372Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a rubber bag undulating weir that allows the rubber bag undulating weir to completely collapse even if foreign objects such as stones flow into the back of the downstream side of the rubber bag undulating weir. This invention relates to a device for removing foreign objects from the back.

Rubber bag body undulating weir is a rubber cylindrical bag body,
It dams the flow of water by inflating or contracting it by letting air or water in or out. However, during this action, foreign objects such as boulders and empty bottles flow into the water flow from upstream, overflowing the upper part of the rubber bag body undulating weir and falling downstream, as if the weir was It stays in the back,
A phenomenon occurred in which layers were stacked there.
Moreover, in conventional rubber bag undulating weirs of this type, the river bed at the back is at almost the same height as the river bed on the upstream side. Not only did this prevent complete lodging, but the presence of empty bottles and cans also caused damage to the rubber bag undulation weir, which was a serious problem.

Therefore, in this invention, a foreign matter passage screen having a length equal to or longer than the length of the rubber bag undulating weir when it is collapsed is installed on the downstream back river bed of the installed rubber bag undulating weir. A depression is formed in the river bed below the screen for foreign matter to pass through, so that even if foreign matter overflows from the upstream side and falls on the back of the rubber bag undulation weir, it will pass through the screen and enter the depression below. This was developed with the aim of providing a device for removing foreign matter from the back of a rubber bag undulating weir, which can be completely collapsed without any hindrance.

Next, an embodiment of the foreign matter removal device at the back of the rubber bag undulating weir according to this invention will be described based on the drawings. 1 is the installed rubber bag undulating weir;
Reference numeral 2 denotes a screen for passing foreign matter disposed on the downstream back riverbed of the rubber bag undulating weir 1. This foreign matter passage screen 2 has a length equal to or longer than the length of the rubber bag body undulating weir 1 when it is collapsed, and is arranged at approximately the same height as the river bed on the upstream side. be. Reference numeral 3 denotes a recess formed in the river bed on the lower surface of the screen 2 for passing foreign matter.Theoretically, it is sufficient that the recess 3 exists for the length of the screen 2 for passing foreign matter, but it is not shown in the figure. If the foreign matter passing screen 2 is formed to be longer on the downstream side, that is, the foreign matter passing screen 2 is shaped like a shelf, it is convenient to remove foreign matter accumulated under the foreign matter passing screen 2.

When the foreign matter that has flowed from the upstream side mixed with the flowing water overflows the top surface of the rubber bag undulating weir 1 and falls downstream, it continues to fall through the holes of the foreign matter passage screen 2 and below. , will enter into the recess 3. Therefore, normally, no foreign matter exists on the upper surface of this foreign matter passing screen 2. Yotsute rubber bag undulating weir 1
When it falls down, there are no foreign objects, so
It becomes possible to realize completely flat lodging.

In addition to overflowing foreign objects, when this rubber bag undulating weir 1 is installed, for example, near the mouth of a river, it is also possible to prevent overflowing foreign objects such as boulders caused by the backflow of the sea tide, which is common at high tide.
This prevents it from entering the depression 3 and the lower surface of the rubber bag body undulating weir 1.

As mentioned above, according to the device for removing foreign matter at the back of the rubber bag undulation weir according to this invention, the rubber bag undulation weir can be completely collapsed and can perform its full function as an undulation weir. In addition, if the screen is arranged in the form of a shelf as described above, it will be very convenient to remove foreign matter accumulated in the depression.

[Brief explanation of the drawing]

The drawings show an embodiment of the foreign matter removal device at the back of the undulating weir of a rubber bag body according to this invention, and FIG. 1 is a plan view, and FIG. 2 is a sectional view taken along the line A--A in FIG. 1. 1...Rubber bag undulating weir, 2...Screen for passing foreign matter, 3...Concave.

Claims (1)

[Scope of utility model registration request] In the downstream back river bed of the installed rubber bag undulating weir,
A foreign matter passage screen having a length equal to or longer than the length of the rubber bag body undulating weir when it is collapsed is provided, and a depression is formed in the river bed under the foreign matter passage screen. Foreign matter removal device at the back of the undulating weir of the rubber bag body.