JPH044026Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to overturning weirs installed in various waterways such as rivers and agricultural canals, and closes the gap between the door body that is rotatably installed on the riverbed and the upstream doorstop. Pressing members that are pressed from above are provided on the upper surfaces of both ends of the water-stopping membrane that is disposed for this purpose.

In order to close the gap between the door body, which is rotatably installed on the river bed, and the upstream door stop, a water-stop membrane made of a rubber sheet or the like is often provided. 6th
As shown in the figure, this type of water-stop membrane 61 is installed with its upper and lower parts attached to the lower back surface of the door body 62 and the upper surface of the upstream door stop 63 with fasteners 64. 61 is made of a somewhat flexible rubber sheet, etc., so that when the door body 62 is in an upright state, both ends of the door body 62 tend to be turned over or bent in unnecessary irregularities.
As a result, there was a drawback that water easily leaked from this turned-up portion as shown by arrow 65.

Therefore, in view of the above points, the present invention was devised for the purpose of providing a new overturning weir that eliminates the drawbacks of conventional overturning weirs of this kind, and has a door body rotatably installed on the riverbed. The upper and lower parts of a water-stop film made of an elastic material are respectively attached to the upstream rear surface and the upstream door stop of the door body, and when the door body is in an upright state, the water-stop film is pressed from above against the upper surface of both ends of the water-stop film. A pressing member is provided, thereby preventing the water-stop film from turning over or unnecessarily bending irregularly and causing water leakage when the door body is in an upright state. This is what I did. Embodiments of the present invention will be described below with reference to the drawings.

Figures 1 to 3 show an overturning weir according to the present invention, in which 1 is a door body, and the door body 1 is rotatably attached to a pedestal 2 installed on the river bed via a pin 3. is set up. Reference numeral 4 denotes a water-stop membrane formed of a material having water impermeability and appropriate elasticity, such as rubber, and its upper and lower parts are attached to bolts and nuts 6 on the lower back of the door body 1 and on the upstream door stop 5. It is installed to ensure sufficient watertightness. Reference numerals 7 and 7 are bent rod-shaped pressing members made of a highly rigid material such as iron or stainless steel, and the upper portions thereof are attached to the lower portions of both rear side portions of the door body 1 by bolts and nuts 8, 8. The lower free end portions 71, 71 extend toward the water stop film 4 while being curved, and when the door body 1 is in the upright state, the lower end portions are pressed against the upper surfaces of both ends of the water stop film 4. The upper surface is pressed down from above. The chain line in FIG. 2 represents the door body 1 in the collapsed state.

Since this overturning weir has the above-mentioned configuration, when the door body 1 is in an upright state, the pressing members 7, 7 are pressed from above against the upper surface of both ends of the water-stopping membrane 4, so that the both ends do not turn over. No gaps are created in the lower parts a, a on both sides of the door body 1 (see FIG. 1) due to unnecessary and irregular bending, and the watertightness of the lower parts a, a on both sides is sufficiently maintained.

4 and 5 show another embodiment of the present invention, in which reference numeral 11 denotes a plate-shaped pressing member, and elongated holes 12, 1 are vertically formed in the upper part of the pressing member.
2 with bolts 13, 13 inserted thereinto, and is disposed at the bottom of the side wall 14 so as to be vertically adjustable (see chain lines). Its lower part extends downward, and an arc-shaped recess 15 is formed in the free end surface of the lower part and is pressed against the upper surface of both ends of the water-stop membrane 4 when the door body 1 is in the upright state. If the arrangement position of the pressing member 11 is made adjustable in this way, even if various conditions such as design conditions and construction conditions change, the position of the pressing member 11 can be easily adjusted to the optimum position. It can be arranged as follows. Furthermore, if the pressing member 11 is made into a plate-like body as in this embodiment and brought into line contact with the upper surface of the water-stopping membrane 4 (the lower end portions of the pressing members 7, 7 in the first embodiment are connected to the water-stopping membrane 4), point contact with the upper surface), it is possible to more reliably prevent the water stop film 4 from turning over or bending.

As is clear from the above-mentioned embodiments, various shapes and positions of the pressing member can be considered.The key point is to press the upper surface of both ends of the water-stopping membrane 4 from above when the door body 1 is in the upright state. Any material may be used as long as it can reliably prevent both ends from turning over or bending unnecessarily and irregularly.

As explained above, the overturning weir according to the present invention has a water-stopping membrane 4 made of an elastic material on the upper and lower parts of the upstream back surface and the upstream door stop 5 of the door body 1 rotatably installed on the riverbed. Pressing members 7 and 11 are provided which are pressed from above to the top surface of both ends of the water stop film 4 when the door body 1 is in the upright state. It is possible to reliably prevent water from leaking from the ends due to the both ends of 4 being turned over or unnecessarily bent irregularly.

[Brief explanation of drawings]

The figure shows an embodiment of the present invention.
2 is a side view, FIG. 3 is a partial perspective view, and FIGS. 4 and 5 are a partial front view, a partial side view, and a partial side view of other embodiments of the present invention, respectively.
Figures a and b are a partial perspective view and a partial front view of a conventional device. 1... Door body, 4... Water stop film, 5... Upstream door stop, 7, 11... Pressing member.

Claims (1)

[Scope of utility model registration request] The upper and lower parts of a water-stopping film made of an elastic material are attached to the upstream rear surface and the upstream door stop of a door body rotatably installed on the river bed, and when the door body is in an upright state, this water-stopping film is An overturning weir, characterized in that it is attached so as to be bent into an inverted U-shape, and is provided with a pressing member that is pressed from above against the upper surface of both ends of the water-stop membrane when the door body is in an upright state.