Water gate

Abstract

To provide a water control door that can ensure water stop performance even when replacing a water stop plate of an aged water control door on site.SOLUTION: A water control door comprises: a doorstop 3 installed in a waterway 1 and having an opening 2 formed in a lower part; a door body 4 liftably attached to the doorstop 3 and opening and closing the opening 2; a door body water stop plate 5 attached to a water stop plate mounting base 13 of the door body 4; a doorstop water stop plate 6 attached to a water stop plate mounting base 12 of the doorstop and stopping water around the opening 2 by being brought into close contact with the door body water stop plate 5 when the door body 4 is lowered. The water control door further has a water stop member 20 attached between the water stop plate mounting base 13 and the door body water stop plate 5 and having elasticity. The water stop member 20 comprises: a base portion 21 fixed to the water stop plate mounting base 13 together with the door body water stop plate 5; and a water stop portion 22 formed continuously on the base portion 21 and protruding toward the doorstop water stop plate 6 side rather than the door body water stop plate 5 before the door body 4 is closed.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a water control gate.

Background Art

[0002] As a conventional example of a water control gate installed in a waterway or facility of a water supply and sewerage system, the one described in Patent Document 1 can be cited. Patent Document 1 describes a water control gate including a sill attached to a wall body via a foundation and a gate body that can move up and down with respect to the sill. When the gate body is completely closed, the water control gate described in Patent Document 1 has a structure in which a metal gate body water stop plate attached to the gate body and a metal sill water stop plate attached to the sill are in close contact to maintain water tightness.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] As a preliminary step before replacing a water control gate that has deteriorated or malfunctioned, temporary restoration is required. Only the gate body is removed, and the gate body water stop plate is replaced at the factory. However, since it takes time and cost to bring the gate body into the factory to replace the gate body water stop plate, it is desired to replace the gate body water stop plate on-site.

[0005] However, in order to attach a new gate body water stop plate to the gate body, grinding work of the water stop plate mounting pedestal of the gate body is required, and it is difficult to perform sufficient work on-site. Also, when there are scratches or the like on the sill water stop plate, it may be difficult to ensure sufficient water tightness. To solve these problems, a method of making the gate body water stop plate made of rubber has also been adopted. However, when the gate body water stop plate is made of rubber, there are problems such as sticking, breakage, or failure to restore while the shape is deformed due to the opening and closing of the gate body.

[0006] In light of these challenges, the present invention aims to provide a water control gate that can ensure watertightness even when the watertight plate of an aging water control gate is replaced on-site. [Means for solving the problem]

[0007] To achieve the above objective, the present invention provides a water control door comprising: a door stop installed in a waterway and having an opening formed at its lower part; a door body attached to the door stop so as to be able to move up and down and to open and close the opening; a door body water stop plate attached to a water stop plate mounting base of the door body; and a door stop water stop plate attached to the water stop plate mounting base of the door stop and in close contact with the door body water stop plate when the door body is lowered to stop water around the opening, wherein the water control door further comprises an elastic water-stopping member attached between the water stop plate mounting base of the door body and the door body water stop plate, the water-stopping member comprising a base that is fixed to the water stop plate mounting base of the door body together with the door body water stop plate, and a water-stopping portion formed continuously with the base and protruding toward the door stop water stop plate side than the door body water stop plate before the door body is closed. The water-stopping part contacts the door stop water-stopping plate when the door body is lowered. It is characterized by the following:

[0008] According to the present invention, since the elastic base is placed between the door body water stop plate and the door body mounting base, polishing work and flattening work on the door body mounting base can be omitted. Therefore, the door body water stop plate can be easily replaced on site and sufficient water stoppage can be ensured. In addition, since the water-stopping portion of the elastic water-stopping member and the door stop water stop plate are in contact, the door stop Even if the water-stopping plate is damaged, sufficient water-stopping can be achieved. Furthermore, even if the water-stopping portion of the water-stopping component is worn down, water can still be stopped by the door's water-stopping plate.

[0009] Furthermore, it is preferable that, before the door body is closed, the portion of the water-stopping part that contacts the door stop water-stopping plate has a curved surface that is convex toward the door stop water-stopping plate.

[0010] According to the present invention, water-sealing properties can be improved. [Effects of the Invention]

[0011] According to the present invention, when replacing the water-stopping plate of an aging water control gate, it is possible to provide a water control gate that can ensure water-stopping even when the replacement is done on-site. [Brief explanation of the drawing]

[0012] [Figure 1] This is a front view showing a water control door according to the first embodiment of the present invention. [Figure 2] This is a side view showing a water control door according to the first embodiment. [Figure 3] This is a view from arrow III-III in Figure 1. [Figure 4] This is a rear view of the door body according to the first embodiment, as seen from the rear. [Figure 5] This is a cross-sectional view taken along the VV arrow in Figure 4. [Figure 6] This is a cross-sectional view showing a door body water stop plate and water stop member according to a second embodiment of the present invention. [Modes for carrying out the invention]

[0013] <First Embodiment> The first embodiment of the water control gate of the present invention will be described below with reference to the attached drawings. In the description of the drawings, the same elements are denoted by the same reference numerals, and redundant explanations are omitted as appropriate.

[0014] As shown in Figures 1 and 2, the water control gate 1 is installed in a waterway and comprises a door stop 3 with a rectangular opening 2 in front view at its lower part, and a door body 4 that is vertically movable and attached to the door stop 3 to open and close the opening 2. The door stop 3 and the door body 4 are made of, for example, cast iron. The water control gate 1 is installed, for example, in waterways and facilities of water and sewage systems.

[0015] As also shown in FIGS. 2 and 3, the door stop 3 is a plate-shaped member having a rectangular shape in a front view, including vertical frame portions 7, 7 and horizontal frame portions 8, 8. The vertical frames 7, 7 extend in the vertical direction, and vertical grooves 7a, 7a facing each other are formed. The vertical grooves 7a, 7a are portions for guiding the door body 4 in the vertical direction. The horizontal frame portions 8, 8 are portions for connecting the vertical frame portions 7, 7 in the left-right direction while forming the opening 2. On the lower horizontal frame portion 8, stoppers T, T are arranged side by side in the horizontal direction. The stoppers T, T are members for restricting the downward movement of the door body 4.

[0016] As shown in FIGS. 1 and 3, on the front surface (the upstream surface) of the door stop 3, a pressing plate 9 and a wedge-shaped fixing tool 10 are provided. The pressing plates 9, 9 are plate-shaped members, and are respectively provided on the lower front surfaces of the vertical frame portions 7, 7. The pressing plates 9, 9 are members for restricting the forward movement of the door body 4. The wedge-shaped fixing tool 10 is attached to the front surface of the vertical frame 7 and has an inclined portion that engages with the wedge-shaped member 11 of the door body 4. The wedge-shaped fixing tool 10 may have at least a pair on the left and right, but in this embodiment, four are provided corresponding to the corners of the door body 4.

[0017] As shown in FIG. [3], on the front surface of the door stop 3, a rectangular frame-shaped water stop plate mounting base 12 is formed at the periphery of the opening 2. Further, a door stop water stop plate 6 is fixed to the water stop plate mounting base 12 over the entire circumference. The door stop water stop plate 6 is made of metal and has a plate shape.

[0018] As shown in FIG. 1, the door body 4 is a plate-shaped member having a rectangular shape in a front view. At the upper part of the door body 4 , a rod R connected to an opening and closing machine (not shown) is provided. Further, as shown in FIG. 3, on the front surface of the door body 4, a wedge-shaped member 11 having an inclined surface is provided.

[0019] As shown in FIGS. 3 and 4, on the rear surface (the downstream surface) of the door body 4, a rectangular frame-shaped water stop plate mounting base 13 is formed along the peripheral edge. Further, a door body water stop plate 5 and a water stop member 20 are fixed to the water stop plate mounting base 13 over the entire circumference. The door body water stop plate 5 is made of metal and has a plate shape.

[0020] As shown in Fig. 5, the water stop member 20 includes a base portion 21 and a water stop portion 22, and has an L-shaped cross section. The water stop member 20 has the same length as the door body water stop plate 5. The water stop member 20 is made of a material having elasticity (softness) such as rubber or resin, for example. The base portion 21 is a portion having a rectangular cross section and is disposed between the door body water stop plate 5 and the water stop plate mounting pedestal 13. A communication hole 21a through which the fastener 14 is inserted is formed in the base portion 21.

[0021] The water stop portion 22 is continuously formed at the end of the base portion 21 and projects in a direction away from the water stop plate mounting pedestal 13 (toward the door stop water stop plate 6 of the door stop 3) more than the door body water stop plate 5 before the door body 4 is closed. In the water stop portion 22 of the present embodiment, the surface in contact with the door stop water stop plate 6 (see Fig. 3) is flat. A communication hole 5a is formed in the door body water stop plate 5 at a position corresponding to the communication hole 21a. The door body water stop plate 5 and the base portion 21 are fixed to the water stop plate mounting pedestal 13 with a fastener 14 such as a screw or a bolt through the communication holes 5a and 21a. That is, the door body water stop plate 5 is disposed so as to fit into the step portion of the water stop member 20.

[0022] As shown in Fig. 4, the door body water stop plate 5 and the water stop member 20 are arranged in a rectangular frame shape along the water stop plate mounting pedestal 13. In the water stop plate mounting pedestal 13, the adjacent water stop portions 22, 22 of the four corners of the water stop member 20 are in contact with each other.

[0023] (Function) When the door body 4 is lowered, the inclined surfaces of the wedge-shaped fixing tool 10 of the door stop 3 and the wedge-shaped member 11 of the door body 4 are in sliding contact with each other, and the door body 4 is pushed into the rear side (door stop 3 side). When the door body 4 has completely descended, the door body water stop plate 5 and the door stop water stop plate 6 are in surface contact and adhere to each other, and the water stop portion 22 of the water stop member 20 and the door stop water stop plate 6 are in close contact. As a result, as shown in Figs. 1 and 3, a water stop region S (drawn with a dashed line) having a rectangular shape in a front view is formed along the outer peripheral edge of the door body 4.

[0024] (Replacement method) Next, referring to Figures 1 to 4, we will explain how to replace the existing water-stopping plate on the door body 4 that has deteriorated or malfunctioned on site. First, remove the door body 4 from the door stopper 3 and place the door body 4 on a flat surface.

[0025] Next, the fixing screws of the existing water stop plate, which is fixed to the door body 4, are removed, and the existing water stop plate is removed from the water stop plate mounting base 13 of the door body 4. Next, the new door body water stop plate 5 is temporarily placed on the water stop plate mounting base 13, and a mark is made for the position where the fastener 14 will be attached through the communication hole 5a. Next, a hole is drilled at the marked position. Finally, the new door body water stop plate 5 and water stop member 20 are attached to the water stop plate mounting base 13 with the fastener 14, and the replacement work is completed. After the replacement work is completed, the door body 4 is inserted into the door stop 3.

[0026] As described above, with respect to the water gate 1 of this embodiment, the elastic base 21 is positioned between the gate body water stop plate 5 and the water stop plate mounting base 13, thus preventing direct contact between the metal gate body water stop plate 5 and the cast iron water stop plate mounting base 13. In other words, because the elastic base 21 deforms to conform to fine irregularities, the polishing work and flattening work on the water stop plate mounting base 13 that were previously required can be omitted. As a result, the gate body water stop plate 5 can be handled on-site. It can be easily replaced while ensuring sufficient watertightness. Furthermore, conventionally, when attaching the door watertight plate to the base, liquid gasket or adhesive was always applied, but in this embodiment, by interposing an elastic base 21 between the watertight plate mounting base 13 and the door watertight plate 5, the application of liquid gasket or adhesive can sometimes be omitted.

[0027] Furthermore, because the elastic water-stopping section 22 and the door stop water-stopping plate 6 are in close contact, the water-sealing (watertightness) around the opening 2 is maintained. Therefore, even if the door stop water-stopping plate 6 is damaged, it will deform to conform to the damage, and sufficient water-sealing can be achieved. In addition, even if the water-stopping section 22 is damaged, stuck, or deformed due to the opening and closing of the door body 4, the door body water-stopping plate 5 is attached, so the door body water-stopping plate 5 and the door stop water-stopping plate 6 will be in close contact as in the conventional method, and the opening 2 can be sealed.

[0028] Furthermore, since the water-stopping portion 22 protrudes toward the door stop water-stopping plate 6 side of the door body water-stopping plate 5 before the door body 4 is closed, the water-stopping portion 22 is compressed when the door body 4 is closed, and the restoring force due to its elasticity can increase the water-stopping force between the water-stopping portion 22 and the door stop water-stopping plate 6.

[0029] Furthermore, as shown in Figure 4, by combining the door body water-stopping plate 5 and the water-stopping member 20 as a set, and combining multiple sets (four in this embodiment), the water-stopping portions 22, 22 can be brought into close contact with each other to improve water-stopping properties.

[0030] <Second Embodiment> Next, as shown in Figure 6, a water-stopping member 20B according to the second embodiment of the present invention will be described. In this embodiment, the water-stopping member 20B has a curved surface that is convex toward the door stop water-stopping plate 6 at the portion of the water-stopping part 22B that contacts the door stop water-stopping plate 6 before the door body 4 is closed. More specifically, the water-stopping part 22B has a hemispherical shape when viewed from the side.

[0031] The water-stopping member 20B (water-stopping section 22B) described above can achieve substantially the same effects as the first embodiment. Furthermore, the water-stopping section 22B can improve water-stopping properties.

[0032] Embodiments of the present invention have been described above. The present invention is not limited to the embodiments described above, and each component can be modified as appropriate without departing from the spirit of the invention. For example, the shape of the water-stopping portion of the water-stopping member is flat or curved (rounded), but is not limited to these, and may be other shapes. Also, in the embodiments, the water-stopping member was fixed by fasteners, but it may be fixed by other methods without using fasteners. Furthermore, the present invention may be applied to a new water-stopping gate. Also, the ratio of the thickness of the base 21 and the gate body water-stopping plate 5 in Figure 5 can be set as appropriate. [Explanation of symbols]

[0033] 1 Water control door 2 openings Per 3 households 4 Door Body 5. Door body water stop plate 6. Door stopper water stopper 12. Water stop plate mounting base (door stop side) 13. Water stop plate mounting base (door body side) 20 Water-stopping member 21 Base 22 Water-stopping section

Claims

1. A door stopper installed in a waterway, with an opening formed at the bottom, A door body that is mounted on the door stop so as to be able to move up and down and opens and closes the opening, A door body water stop plate attached to the water stop plate mounting base of the door body, A water-stopping door is provided with a door stop water-stopping plate that is attached to the water-stopping plate mounting base of the door stop and which, when the door body is lowered, comes into close contact with the door body water-stopping plate to stop water from entering around the opening, The door body has a water-stopping member that is attached between the water-stopping plate mounting base and the door body water-stopping plate and is elastic, The aforementioned water-stopping member is A base that is fixed together with the door body water stop plate to the door body water stop plate mounting base, It comprises a water-stopping portion formed continuously with the base and which protrudes toward the door stop water-stopping plate side of the door body water-stopping plate before the door body is closed, The water-stopping section is characterized in that it contacts the door stop water-stopping plate when the door body is lowered.

2. The water-stopping door according to claim 1, characterized in that, before the door body is closed, the portion of the water-stopping part that contacts the door stop water-stopping plate has a curved surface that is convex toward the door stop water-stopping plate.

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