Water shutoff device

Abstract

To increase the workability of a water cut-off device.SOLUTION: A water cut-off device includes a plate-shaped water cut-off body 1 standing so as to cross a flow direction of water, and right and left pillars 2 supporting the water cut-off body 1 at both sides thereof, wherein the water cut-off body 1 has a body plate 10 and engaging protrusions 20 protruding from an upper part of the body plate 10 to the right and left sides respectively, each pillar 2 has a body pillar 30 spanning in a vertical direction and an engaged portion 40 protruding from the body pillar 30 to the upstream side in the flow direction, and the engaged protrusion 20 is moved from the upstream side to the downstream side in the flow direction to engage the engaged portion 40, with the water cut-off body 1 placed on an immovable surface G on the lower side of the engaged portion 40.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a water stop device that closes openings of buildings and subways with a substantially plate-shaped water stop body during water level rise to prevent water intrusion, and a method for installing this water stop device.

Background Art

[0002] When water level rises due to typhoons or heavy rainstorms and intrudes into the openings of buildings and subways, there is a risk of causing significant damage due to flooding. Therefore, in preparation for such a situation, columns are erected in advance on both sides of the openings of buildings and subways, and a plate-shaped water stop plate is stored near these columns. When water level rise occurs, the water stop plate is fixed to the columns on both sides with bolt-shaped water stop plate pressing tools to prevent water intrusion. This has been conventionally known (see Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, according to the above prior art, there is room for improvement, such as the time-consuming operation of tightening the wing bolt.

Means for Solving the Problems

[0005] In view of such problems, the present invention has the following configurations. A water-stopping device comprising a plate-shaped water-stopping body erected so as to intersect the direction of water flow, and left and right support columns supporting the water-stopping body on both sides, wherein the water-stopping body comprises a main plate and engaging projections projecting to the left and right sides from near the upper part of the main plate, and the support columns comprise a main column extending in the vertical direction and an engaged portion projecting from the main column toward the upstream side in the direction of flow, wherein the water-stopping body is placed on a fixed surface below the engaged portion, and the engaging projections are moved from the upstream side to the downstream side in the direction of flow to engage with the engaged portion. [Effects of the Invention]

[0006] As described above, the present invention is configured in a way that improves the workability when setting the water-stopping body onto the support columns on both sides. [Brief explanation of the drawing]

[0007] [Figure 1] This is a perspective view showing an example of a water-stopping device according to the present invention. [Figure 2] This is a perspective view showing an example of the engaged portion in the water-stopping device. [Figure 3] This is a longitudinal cross-sectional view of the engaged portion. [Figure 4] These are side views of the water-stopping device, showing how the water-stopping body is attached to the support column, sequentially from (a) to (b). [Figure 5] These are side views of the water-stopping device, with (c) to (d) sequentially showing how the water-stopping body is attached to the support column. [Figure 6] This is an enlarged longitudinal section of the main part of the engaged portion. [Figure 7] (a) and (b) are longitudinal cross-sectional views showing examples of the shape of the overhang projection in the engaged portion, respectively. [Modes for carrying out the invention]

[0008] Next, embodiments of the present invention will be described in detail with reference to the drawings. In this specification, "upstream" means the upstream side in the direction of the assumed water flow, and "downstream" means the downstream side in the direction of the assumed water flow, which is in the opposite direction to the upstream side.

[0009] The water-stopping device A comprises a plate-shaped water-stopping body 1 erected to intersect the direction of water flow, and left and right support columns 2, 2 that support the water-stopping body 1 on both sides, and is installed, for example, in openings of buildings or entrances to underground facilities.

[0010] The water-stopping body 1 integrally comprises a main plate 10 and engaging protrusions 20, 20 projecting to the left and right sides, respectively, near the upper part of the main plate 10, and is configured to be carried by workers or others by grasping the handle 11.

[0011] The main plate 10 is formed in a horizontally elongated rectangular shape from a hard material such as metal, and on its downstream side, one end and the other end in the width direction overlap with the receiving surface 31 of the support column 2. The main body plate 10 may be composed of, for example, a hollow, horizontally elongated rectangular member formed by extrusion molding, and members (not shown) that cover both sides of this member.

[0012] One or more handles 11 are provided on the upstream surface of the main body plate 10. According to the illustrated example, two handles 11 are provided on the upstream side of the main plate 10, near the center, spaced apart on the left and right, so that a worker or other person can grasp them with both hands.

[0013] Each handle 11 has a rod-shaped grip portion 11a extending in the vertical direction, a hand support portion 11b that receives the hand gripping the grip portion from above and is fixed to the main body plate 10, and a lower fixing portion 11c that is fixed to the main body plate 10 at the lower end of the grip portion 11a, and is formed in a U-shape when viewed from the side, as shown in the illustrated example. In addition, another example of this handle 11 is that the lower fastening portion 11c is omitted from the above configuration, and it can be formed in an inverted L-shape when viewed from the side.

[0014] Each engaging projection 20 is a cylindrical shaft-shaped member that protrudes laterally from near the upper end of the side surface of the main body plate 10. This engaging projection 20 is, for example, formed in a cylindrical shape from a hard metal material, inserted into fastening holes (not shown) provided on the side surfaces of both the left and right sides of the main body plate 10, and fixed by welding, screw fitting, or the like. If the engaging projection 20 is formed in a cylindrical shaft shape in this way, the strength of the engaging projection 20 can be maintained at a high level, and the operation when engaging the engaging projection 20 with the concave engaging portion 42 can be made smooth. As another example of this engaging projection 20, it is also possible to be fixed near the upper end of the upstream side surface of the main body plate 10 and protrude laterally.

[0015] Also, on the downstream side surface of the main body plate 10, vertical waterproof members 12 made of an elastic material are provided on the left and right end sides so as to be sandwiched between the main body plate 10 and the receiving surface 31 of the support column 2. Furthermore, a horizontal waterproof member 13 made of an elastic material is provided at the lower end portion of the main body plate 10 so as to be sandwiched between the lower end portion and the fixed surface G.

[0016] The vertical waterproof members 12 are provided vertically on the left end side and the right end side of the downstream side surface of the main body plate 10, respectively. Each vertical waterproof member 12 is formed in a long shape that is continuous in the vertical direction of the main body plate 10 from an elastic material such as rubber or elastomer resin. This vertical waterproof member 12 is fixed to the downstream side surface of the main body plate 10 by adhesion with an adhesive, fitting via a bracket, or the like, and protrudes from the main body plate 10 to the downstream side. When the water stop body 1 is attached to the support columns 2, 2 on both sides, the vertical waterproof member 12 is pressed against the receiving surface 31 and elastically deformed.

[0017] The horizontal waterproof member 13 is provided at the lower end portion of the main body plate 10 over substantially the entire horizontal length. This horizontal waterproof member 13 is formed in a long shape that is continuous in the horizontal direction of the main body plate 10 from an elastic material such as rubber or elastomer resin. This lateral watertight material 13 is fixed to the lower end surface of the main body plate 10 by adhesive bonding or fitting via a bracket, and protrudes downward from the main body plate 10. When the watertight body 1 is attached to the support columns 2, 2 on both sides, the lateral watertight material 13 is pressed against the immovable surface G and undergoes elastic deformation. The vertical thickness of the lateral watertight material 13 is appropriately set so that the vertical elastic force of the lateral watertight material 13 is maintained when the engaging projection 20 (described later) is fitted into the concave engaging portion 42 (see Figure 5).

[0018] Furthermore, the vertical watertight material 12 and the horizontal watertight material 13 can be made by cutting long pieces of the same material to the required length.

[0019] Furthermore, in the illustrated example, the lateral watertight material 13 is provided along the entire length of the main body plate 10 in the lateral direction, and the lower end of the vertical watertight material 12 is in contact with the upper surface of the end of the lateral watertight material 13 (see Figure 1). In other examples, the vertical watertight material 12 may be provided along the entire length of the main body plate 10 in the vertical direction, and the end of the lateral watertight material 13 in the lateral direction may be in contact with the side surface of the lower end of the vertical watertight material 12.

[0020] Each support column 2 integrally comprises a main column 30 extending in the vertical direction and an engaging portion 40 projecting upstream in the flow direction from the main column 30, and stands upright against the immovable surface G below. The immovable surface G is the ground, floor, or a flat base, etc.

[0021] The main column 30 is constructed in a rectangular prism shape from, for example, a hard metal material. The main column 30 is provided with a receiving surface 31 that receives the main plate 10 from the upstream side in the vertical direction. The receiving surface 31 is, in the illustrated example, the flat surface on the upstream side of the rectangular prism-shaped main body plate 10. As an alternative example, the upstream surface of the main column 30 may be formed in a stepped shape (or, to put it another way, an L-shaped cross-section) that fits into the side end of the main plate 10, and this stepped recessed surface may be used as the receiving surface (not shown).

[0022] The main column 30 is erected on the immovable surface G and fixed so as not to move in any direction (front, back, left, or right). This fixing means may involve fastening the lower end of the main column 30 to the immovable surface G, or fastening the downstream surface or side of the main column 30 to the inner edge of the opening of the structure to which the water-stopping device A is to be installed. The fastening means may include, for example, welding, fitting, or screwing.

[0023] The engaged portion 40 is a metal block-shaped member that protrudes upstream from the upper end of each main column 30. The lower end of the engaged portion 40 has a crossing projection 41 that crosses over and engages the engaging projection 20 from the upstream side to the downstream side, a concave engaging portion 42 that fits and positions the crossed engaging projection 20, and a guide inclined surface 43 downstream of the concave engaging portion 42 that guides the engaging projection 20 diagonally downward to the downstream side.

[0024] More specifically, as shown in Figures 2 and 3, the lower half of the engaged portion 40 has a continuous inverted concave cross-section in the flow direction when viewed from the upstream side, and the overcoming projection 41, the concave engaging portion 42, and the guide inclined surface 43 are formed on the lower end edges on both sides of this inverted concave portion 40a. Furthermore, the inside of the inverted concave portion 40a functions as a space for inserting the fastener 52, which will be described later. In addition, another example of the engaged portion 40 is that it can be formed in a block shape without having an inverted concave portion 40a.

[0025] The overhanging projection 41 is formed in the shape of a convex curved surface that protrudes downward when viewed from the side. The lowest position of this overhang projection 41 is set appropriately so that when the lateral watertight material 13 is compressed and the engaging projection 20 moves downward, the engaging projection 20 passes downstream.

[0026] As a specific preferred example, the overhang projection 41 shown in Figure 6 has a projection H that protrudes downward from the upper bottom surface of the concave engagement portion 42 (described later) which is approximately the same as the radius r of the engagement projection 20. In other words, if the protrusion amount H is too long, the resistance when the engaging projection 20 overcomes the overhang projection 41 may become too great due to the elastic force of the lateral watertight material 13, potentially leading to a decrease in workability. Conversely, if the protrusion amount H is too short, the engaging projection 20 may not be able to firmly maintain its engagement with the concave engaging portion 42. The protrusion amount H of the overhang projection 41 is set appropriately, taking these factors into consideration.

[0027] Furthermore, the overcoming projection 41 has an inclined surface 41a that extends diagonally downward downstream to the portion that is contacted from the upstream side by the engaging projection 20. This inclined surface 41a is constructed by forming the upstream surface of the overcoming projection 41 in a convex curved shape, as shown in the example in Figure 7(a). This inclined surface 41a allows the engagement projection 20 to come into contact with the overcoming projection 41 and move over it smoothly.

[0028] As another preferred example, as shown in Figure 7(b), the portion of the overpass projection 41 that is contacted from the upstream side by the engaging projection 20 may be provided with an inclined surface 41a' that slopes in a substantially flat manner toward the downstream diagonal downward direction (or, to put it another way, a C-chamfered shape). This configuration reduces the resilient force that the engaging projection 20 receives from the lateral watertight material 13 when it passes through the introduction inclined surface 41a', and consequently, makes the movement of the engaging projection 20 overcoming obstacles even smoother.

[0029] The concave engaging portion 42 is formed in an arc shape in side view such that the upper and upstream portions of the outer circumferential surface of the engaging projection 20 overlap (see Figure 3). The concave engaging portion 42 positions the engaging projection 20, which has overcome the overcoming projection 41, so that it does not easily move back and forth.

[0030] In the illustrated example, the guide inclined surface 43 extends linearly downward and diagonally downstream. When the water-stopping body 1 is pressed downstream by water pressure, this guide inclined surface 43 moves the engaging projection 20 diagonally downward and downstream from the concave engaging portion 42.

[0031] Furthermore, in the engaged portion 40, fastening holes 44 and 45 are provided above the overriding projection 41, the concave engaging portion 42, and the guide inclined surface 43, etc., for inserting fasteners 51 and 52 (for example, screws, bolts, rivets, etc.) (see Figure 3).

[0032] The fastening holes 44 are holes that penetrate the engaged portion 40 along its entire length in the flow direction, and in the illustrated example, there are multiple (two in the illustrated example) of them. The fasteners 51 inserted through each fastening hole 44 are screwed into the main column 30 at their tip ends and fastened.

[0033] The fastening hole 45 is a hole that penetrates the downstream wall portion within the inverted concave portion 40a, and in the illustrated example, one hole is provided. The fastener 52 inserted through this fastening hole 45 is screwed into the main column 30 at its tip and fastened thereto.

[0034] Next, the procedure and effects of attaching the water-stopping body 1 to the support column 2 for the water-stopping device A with the above configuration will be explained in detail. With the water-stopping body 1 placed on the immovable surface G below the engaged portion 40, the worker moves the engaging projection 20 from the upstream side to the downstream side to engage it with the concave engaging portion 42.

[0035] To explain in detail, first, the worker grasps the handles 11,11 on both sides with their hands and tilts the upper end of the water-stopping body 1 upstream, bringing both ends of the water-stopping body 1 closer to the support columns 2,2 on both sides from the upstream side. Then, the lateral watertight material 13 of the water-stopping body 1 is brought to rest on the immovable surface G approximately directly below the engaged portion 40 (see Figure 4(a)).

[0036] Next, using the contact point between the lateral watertight material 13 and the immovable surface G as a fulcrum, the upper end of the water-stopping body 1 and the engaging projection 20 are moved in an arc downstream. As a result, the outer circumferential surface of the engaging projection 20 of the water-stopping body 1 comes into contact with the upstream portion of the overcoming projection 41 of the engaged portion 40 (see Figure 4).

[0037] Furthermore, when the upper end of the water-stopping body 1 is pressed downstream, the engaging projection 20 is pressed against the downwardly convex curved portion of the overriding projection 41 and moves downward. Therefore, the entire watertight body 1 rotates downward so that its upper end approaches the support column 2. As a result of this rotation and descent, the vertical watertight material 12 is gradually pressed against the support column 2, and the horizontal watertight material 13 is gradually pressed against the immovable surface G.

[0038] Furthermore, when the upper end of the water-stopping body 1 is pressed downstream, the rotation and descent continue, and the engaging projection 20 rotates under the overcoming projection 41, thereby overcoming the overcoming projection 41. During this overcoming operation, the lateral watertight material 13 is further pressed against the receiving surface 31 of the support column 2. Then, after overcoming the overcoming projection 41, the engaging projection 20 rises slightly due to the elastic restoring force of the lateral watertight material 13, and the engaging projection 20 fits into the concave engaging portion 42 (see Figures 5(c) to (d)). Therefore, the watertight body 1 is positioned so that it does not easily move relative to the support column 2 in the direction of flow (or, to put it another way, in the direction of the thickness of the watertight body 1). In this state, the vertical watertight material 12 is pressed against the support column 2, and the horizontal watertight material 13 is pressed against the immovable surface G.

[0039] Furthermore, if the water-stopping body 1 is pushed further downstream due to water pressure or the like, the engaging projection 20 moves diagonally downward downstream along the guide inclined surface 43, causing the vertical watertight material 12 to be pressed further against the support column 2, and the horizontal watertight material 13 to be pressed further against the immovable surface G. As a result, the watertightness between the water-stopping body 1 and the support column 2 is further enhanced.

[0040] Furthermore, to remove the water-stopping body 1 from the support column 2, the entire water-stopping body 1 should be pushed downwards while flicking it toward the front, allowing it to overcome the engaging projection 20 and move toward the projection 41 on the upstream side.

[0041] Therefore, according to the water-stopping device A with the above configuration, the workability when setting the water-stopping body 1 on the support columns 2,2 on both sides is good, and the water-stopping performance after setting is also excellent.

[0042] <Variation> According to the above embodiment, the vertical watertight material 12 is provided on the watertight body 1 side. However, as an example other than the illustrated example, it is also possible to provide the vertical watertight material 12 on the support column 2 instead of on the watertight body 1, or to provide the vertical watertight material 12 on both the watertight body 1 and the support column 2.

[0043] According to the above embodiment, the lateral watertight material 13 is provided on the watertight body 1 side. However, as an example other than the illustrated example, it is also possible to provide the lateral watertight material 13 on the immovable surface G without providing it on the watertight body 1, or to provide the lateral watertight material 13 on both the watertight body 1 and the immovable surface G.

[0044] Furthermore, while the above embodiment involves attaching a single water-stopping body 1 to the support column 2, another example would be to provide multiple engagement portions 40 at predetermined intervals in the vertical direction on the support column 2, arrange multiple water-stopping bodies 1 corresponding to these multiple engagement portions 40, and stack them.

[0045] Furthermore, the present invention is not limited to the specific configurations described above, and can be modified as appropriate without altering the essence of the invention. <Summary> As described above, the above embodiment discloses the following invention. (1) A water-stopping device comprising a plate-shaped water-stopping body erected so as to intersect the direction of water flow, and left and right support columns supporting the water-stopping body on both sides, wherein the water-stopping body comprises a main plate and engaging projections projecting to the left and right sides from the upper part of the main plate, and the support columns comprise a main column extending in the vertical direction and an engaging portion projecting from the main column toward the upstream side in the direction of flow, wherein the water-stopping body is placed on a fixed surface below the engaging portion, and the engaging projections are moved from the upstream side to the downstream side in the direction of flow to engage with the engaging portion (see Figures 1 to 5). (2) The water-stopping device according to (1) (see Figures 4 to 5), characterized in that the engaging projection rotates downstream in the flow direction by an arc motion with the point of contact between the water-stopping body and the lower fixed surface as the pivot point, and engages with the engaged portion. (3) The engaging projection is the Main panel A water-stopping device according to (1) or (2) (see Figures 3 to 5), characterized in that it is formed in an axial shape protruding laterally from there, and the engaged portion is provided with an overriding projection that overcomes and engages the engaging projection from the upstream side to the downstream side in the flow direction. (4) The water-stopping device according to (3) (see Figure 7), characterized in that the overcoming projection has an inclined surface directed diagonally downward downstream at the portion that is in contact with the engaging projection. (5) The water-stopping device according to (3) or (4), characterized in that the main column is provided with a receiving surface that receives the main plate from the upstream side, a vertical watertight material made of an elastic material is provided between the main plate and the receiving surface, and the vertical watertight material is pressed against the receiving surface as the engaging projection overcomes the overcoming projection. (6) A water-stopping device according to any one of (1) to (5) (see Figure 5), characterized in that a lateral watertight material made of an elastic material is provided between the main body plate and the lower fixed surface. (7) The water-stopping device according to any one of (3) to (6) (see Figures 2 to 5), characterized in that the engaged portion has a concave engaging portion that fits concavely into the upper portion of the engaging projection, downstream of the overcoming projection in the flow direction. (8) The engaging projection is the Main panel It is formed in the shape of a cylindrical shaft that protrudes laterally from it, The water-stopping device according to (7), characterized in that the amount of the overhang projection protruding downward from the upper bottom surface of the concave engaging portion is approximately the same as the radius of the engaging projection. (9) The water-stopping device according to (7) or (8) (see Figures 2 to 5) is characterized in that the engaged portion has a guide inclined surface that guides the engaging projection diagonally downward downstream, located downstream of the concave engaging portion in the flow direction. [Explanation of symbols]

[0046] 1: Water-stopping body 2: Prop 10: Main panel 11: Toride 12: Vertical watertight material 13: Lateral watertight material 20: Engagement protrusion 30: Main column 40: Engaged part 41: Overcoming protrusion 42: Concave engagement part 43: Guide Inclined Surface A: Water shutoff device G:Fudo surface

Claims

1. A water-stopping device comprising a plate-shaped water-stopping body erected so as to intersect the direction of water flow, and left and right support columns that support this water-stopping body on both sides, The aforementioned water-stopping body comprises a main plate and engaging projections that protrude to the left and right sides from the upper part of the main plate. The support column comprises a main column extending in the vertical direction and an engaging portion projecting from the main column toward the upstream side in the flow direction. A water-stopping device characterized in that, with the water-stopping body placed on the immovable surface below the engaged portion, the engaging projection is moved from the upstream side to the downstream side in the flow direction to engage with the engaged portion.

2. The water-stopping device according to claim 1, characterized in that the engaging projection rotates downstream in the flow direction by an arc motion with the point of contact between the water-stopping body and the lower fixed surface as the pivot point, and engages with the engaged portion.

3. The aforementioned engaging projection is formed in an axial shape that protrudes laterally from the main plate, The water-stopping device according to claim 1, characterized in that the engaged portion is provided with an overriding projection that overrides and engages the engaging projection from the upstream side to the downstream side in the flow direction.

4. The water-stopping device according to claim 3, characterized in that the overcoming projection has an inclined surface directed diagonally downward downstream at the portion that is in contact with the engaging projection.

5. The main column is provided with a receiving surface that receives the main plate from the upstream side. A vertical watertight material made of an elastic material is provided between the main body plate and the receiving surface. The water-stopping device according to claim 3, characterized in that the longitudinal watertight material is pressed against the receiving surface as the engaging projection overcomes the overcoming projection.

6. The water-stopping device according to claim 5, characterized in that a lateral watertight material made of an elastic material is provided between the main body plate and the lower fixed surface.

7. The water-stopping device according to any one of claims 3 to 6, characterized in that the engaged portion has a concave engaging portion that fits concavely into the upper portion of the engaging projection, downstream of the overriding projection in the flow direction.

8. The engagement projection is formed in the shape of a cylindrical shaft that protrudes laterally from the main plate. The water-stopping device according to claim 7, characterized in that the amount of the overhang projection protruding downward from the upper bottom surface of the concave engaging portion is approximately the same as the radius of the engaging projection.

9. The water-stopping device according to claim 7, characterized in that the engaged portion has a guide inclined surface that guides the engaging projection diagonally downward downstream, located downstream of the concave engaging portion in the flow direction.

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