JPH0449241Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention relates to a watertight rubber for the weir plate of an overturning weir.

(Prior art) For overturning weirs, in which the weir plate is pivoted to a mounting base installed at the bottom of the waterway so that it can be tipped over and raised, there is a gap between the lower part of the weir plate and the mounting base to prevent water leakage in this area. It is covered with watertight rubber, but conventional watertight rubber has a uniform wall thickness and is made to have the same strength over the entire surface.

(Problem to be solved by the invention) In an overturning weir in which the watertight rubber is provided on the upstream side of the weir plate, when the weir plate is erected, the watertight rubber 11 As shown in Fig. 6, the rubber gradually curves upstream, but conventional watertight rubber curves into an irregular shape with both ends bulging toward the weir plate due to the frictional force with the side wall 6 of the waterway. As a result, the vicinity of the top of the curved portion is turned up toward the inside of the waterway as shown in Fig. 7, creating a gap a between the side wall and the watertight rubber, through which the stored water flows downstream. There was a problem with water leaking.

(Means for solving the problems) In order to solve the above problems, the present invention is as follows. That is, in the overturning weir according to the present invention, a weir plate is pivoted to a mounting base provided at the bottom of a waterway so that it can be tipped over and erected. A watertight rubber whose end surface is in close contact with the side wall of the waterway is provided, and a cylindrical reinforcing member is provided on the lower surface of the side end of the watertight rubber to guide the curvature of the watertight rubber when the weir plate is erected. It is said that

(Function) Since reinforcing materials are provided at both ends of the watertight rubber, abnormal deformation due to frictional force is less likely to occur, and when the weir plate is raised or falls over, the watertight rubber becomes almost symmetrical with respect to the center line between the weir plate and the mounting base. It curves while retaining its shape. Therefore, contraction on the inner surface of the curved portion and expansion on the outer surface are performed in a well-balanced manner, and no gap is created between the end surface of the watertight rubber and the side wall of the water channel.

(Embodiment) FIGS. 1 and 2 show an embodiment of the present invention, and this overturning weir 1 includes a mounting base 2 with an I-shaped cross section installed at the bottom of a waterway across the width of the waterway, and the mounting base. The base 5 is attached to the mounting plate 3 which is fixed to the proper place of 2.
a weir plate 5 which is pivotally connected by a pin 3a;
It is provided with a side plate 6 provided along the side wall of the waterway. Further, a hoisting device (not shown) is installed on the embankment, and the end of the wire 7 fed out from the pulley of this hoisting device is connected to the mounting piece 8 attached to the upper end of the weir plate 5. It is worn. The weir plate 5 is supported in an upright position by the wire 7 during water storage, but by unlocking the pulley of the hoisting device, the upper part of the weir plate 5 is moved to the bottom of the waterway by its own weight and water pressure. Fall down until they almost touch each other. When the weir plate 5 is to be erected, the pulley may be rotated in the hoisting direction manually or by other suitable power.

The weir plate 5 is formed by pasting a skin plate 10 made of a steel plate on the upstream side of the frame body 9. A watertight rubber 11 is watertightly attached between the lower end of the skin plate 10 and the mounting base 2 with bolts 12. A cylindrical reinforcing member 14 is fixed to the center position on the back side of both ends of the watertight rubber 11. The watertight rubber 11 and the reinforcing material 14 are formed so that their respective end surfaces are in close contact with the side plate 6.
Further, a plate-shaped presser 15 is attached to the skin plate 10 slightly above the attachment position of the watertight rubber 11. Further, a rubber material 17 for watertightness is also attached to the gap formed between the side part of the skin plate 10 and the side plate 6.

When the overturning weir 1 is collapsed, the watertight rubber 11 is in an expanded state as shown in FIG. 2a. When the weir plate 5 is raised from the state shown in the figure, the distance between the mounting position on the mounting base side and the mounting position on the skin plate side gradually becomes narrower, so the watertight rubber 11 moves in accordance with the raising operation of the weir plate 5. It curves convexly toward the upstream side. At this time, the watertight rubber 11 curves while involving the reinforcing material 14.
A line X-X connecting the center O of 4 and the pivot point P of the weir plate 5
The shape is maintained almost symmetrically. As a result, the outer portion of the watertight rubber 11 expands and the inner portion contracts equally, so that the end surface of the watertight rubber 11 and the side plate 6 remain in close contact with each other. Immediately before the weir plate 5 is completely erected, the presser plate 15 comes into contact with the side surface of the watertight rubber 11 on the weir plate 5 side, thereby making the bending of the watertight rubber 11 more reliable. In this way, by the action of the reinforcing material 14 and the holding plate 15, the watertight rubber 11 is successfully bent as shown in FIG. There is no gap between the end face and the side plate 6,
Water leakage during water storage is prevented.

Next, Figures 3a and b show different examples,
In this example, a band-shaped reinforcing material 20 is attached to the inner surface of the end of the watertight rubber 11. This reinforcement material 2
Since the end of the watertight rubber 11 is reinforced with 0, as in the previous example, the resistance to frictional force increases, and the end of the watertight rubber 11 becomes distorted when it curves as the weir plate rises. It is less likely to be distorted.

The embodiment shown in FIG. 4 is the first embodiment and the second embodiment.
It is a combination of both structures of the embodiment,
A cylindrical reinforcing member 14 is attached to the center position on the inner surface side of both ends of the watertight rubber 11, and band-shaped reinforcing members 20', 20' are attached to both sides of the cylindrical reinforcing member 14. In this embodiment, the reinforcing material 14 and the reinforcing material 2 are
Due to the synergistic action of 0' and 20', the watertight rubber 11 is more reliably bent in an ideal manner than in the previous example.

Further, FIGS. 5a and 5b show a further different example, in which a ridge-shaped reinforcing member 22 is integrally molded on the outer surface side of the end of the watertight rubber 11. This reinforcing material 22 can be formed by bending the side end portions of the watertight rubber 11 into an L-shape. In this case, as the restoring force increases due to the lip packing type reinforcement 22, the water pressure decreases to L.
An excellent watertight effect can be obtained by improving adhesion by pressing the vertical edge of the letter shape against the side plate 6 side.

As for the shape of the watertight rubber reinforcing material, in addition to the cylindrical reinforcing material (which may be cylindrical) 14 in the above embodiment, either a band-like reinforcing material 20 or a standing edge-like reinforcing material 22 may be used in combination. Furthermore, if the strength of the end portion of the watertight rubber can be improved, a reinforcing material having a different shape from these may be used.

(Effect of the invention) As is clear from the above explanation, the overturning weir according to the present invention maintains an ideal watertight shape when the weir plate is erected, since the reinforcing material is provided at the end of the watertight rubber. This allows the weir plate to be curved without creating any gaps with the side walls of the waterway, improving watertightness when the weir plate is erected and when water is stored.

[Brief explanation of the drawing]

Figures 1 and 2 show one embodiment of the present invention, with Figure 1 being a perspective view of an overturning weir, and Figure 2 being a perspective view of its essential parts. 3 to 5 are perspective views of main parts of an example different from the above. In FIGS. 2 to 5, a indicates the state when the weir plate is collapsed, and b indicates the state when it is erected. Further, FIG. 6 is a perspective view of the conventional example showing the upright state of the weir plate, and FIG. 7 is a front view thereof as seen from the upstream side. 1... Overturning weir, 2... Mounting base, 5... Weir plate, 1
1... Watertight rubber, 14, 20, 22... Reinforcement material.

Claims (1)

[Scope of utility model registration request] In an overturning weir in which a weir plate is pivoted to a mounting base provided at the bottom of a waterway so as to be able to rise and fall, a watertight rubber whose both end surfaces are in close contact with the side walls of the waterway is provided between the base of the weir plate and the mounting base. 1. An overturning weir, characterized in that a cylindrical reinforcing member is provided on the lower surface of the side end of the watertight rubber for guiding the curvature of the watertight rubber when the weir plate is erected.