Water cutoff device and installation structure of water cutoff device

Abstract

To prevent a center pillar from interfering with an object inside a skeleton opening part.SOLUTION: A water cutoff device includes: water cutoff bodies 10, 10 arranged on both right and left sides so as to cross with an assumed water flow direction; right and left supports 20, 20 supporting the right and left water cutoff bodies 10, 10 on both end sides; and a center pillar 30 supporting the right and left water cutoff bodies 10, 10 on a center side. The center pillar 30 includes: a center pillar body 31 that receives the right and left water cutoff bodies 10, 10 from a lower stream side of the flow direction; and an upstream side support part 32 that projects from the center pillar body 31 to an upstream side of the flow direction and is fixed to a lower side immovable surface F.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present invention relates to a water stop device in which left and right water stop bodies are supported by a center pillar on the center side of the body, and to an installation structure for the water stop device. [Background technology]

[0002] When rising water caused by a typhoon, heavy rain, or the like infiltrates an opening in the structure of a building, underground passage, or the like, there is a risk of serious damage due to flooding. To prepare for such an event, a water stop device has been known in the art in which supports (spacer members) for supporting plate-shaped water stop bodies are permanently installed on the visible surfaces on both sides of the opening in the structure of a building, underground passage, or the like, and when rising water occurs, a water stop plate is connected to the permanent supports to close the opening in the structure and prevent water from entering (see Patent Document 1). In such a water stop device, if the width of the opening in the main body is relatively large, two water stop bodies are provided adjacent to each other on the left and right, and these two water stop bodies are supported by a center pillar in the center. Usually, such a center pillar has an integral part that protrudes downstream and contacts the lower fixed surface (hereinafter referred to as the downstream support part) to prevent the two water stop bodies from bending downstream due to the water pressure they receive. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2018-184754 Summary of the Invention [Problem to be solved by the invention]

[0004] According to the above configuration, the downstream support portion is located inside the body opening. However, in many cases, a door or other fixture or shutter device is installed inside the opening in the building frame, and in such cases, the fixture or shutter curtain may interfere with the downstream support portion. Therefore, in the past, when an opening / closing device such as a fixture or shutter device was installed inside a structural opening, it was necessary to either remove the opening / closing device before installing a water stop device, or to install the water stop device far upstream from the visible surface of the structural opening and connect the support pole of the water stop device to the visible surface using a bracket or the like. [Means for solving the problem]

[0005] In view of the above problems, one aspect of the present invention is provided with the following configuration. A water stopping device comprising water stopping bodies arranged on both sides so as to intersect with the expected water flow direction, left and right support pillars supporting the left and right water stopping bodies at both ends, and a center pillar supporting the left and right water stopping bodies at the center, wherein the center pillar comprises a center pillar main body that supports the left and right water stopping bodies from the downstream side of the flow direction, and an upstream support portion that protrudes from the center pillar main body toward the upstream side of the flow direction and is attached to a lower fixed surface. [Effects of the Invention]

[0006] Since the present invention is configured as described above, it is possible to prevent the center pillar from interfering with objects inside the opening in the body. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is a perspective view showing an example of a waterproofing device according to the present invention. [Figure 2] FIG. 2 is a perspective view showing the water stop device with the water stop body removed from the support and center pillar. [Figure 3] FIG. [Figure 4] FIG. 2 is a perspective view showing the lower side of the support pillar. [Figure 5] FIG. 10 is a perspective view showing the lower side of the center pillar. [Figure 6] FIG. 2 is a plan view showing the water stop body attached to the support pillar and center pillar of the water stop device. [Figure 7] FIG. 2 is a plan view showing the water stop device with the water stop body attached to the support pillar and center pillar. [Figure 8] FIG. 8 is a longitudinal cross-sectional view taken along line (VIII)-(VIII) in FIG. 7. DETAILED DESCRIPTION OF THE INVENTION

[0008] Next, an embodiment of the present invention will be described in detail with reference to the drawings. In the following description, the term "upstream side" refers to the upstream side in the expected direction of water flow, and the term "downstream side" refers to the downstream side in the expected direction of water flow, that is, the opposite side to the upstream side. In this embodiment, it is assumed that water flows from the outdoor side to the indoor side.

[0009] The water stopping device 1 comprises water stopping bodies 10, 10 arranged on both the left and right sides approximately perpendicular to the expected water flow direction, left and right support pillars 20, 20 that support the left and right water stopping bodies 10, 10 at both ends, and a center pillar 30 that supports the left and right water stopping bodies 10, 10 at the center (see Figures 1 and 2).

[0010] Each water stop 10 integrally comprises a horizontally elongated rectangular main body plate 11, lower engaging protrusions 12 protruding to the left and right sides from the underside of the main body plate 11, upper engaging protrusions 13 protruding to the left and right sides above the lower engaging protrusions 12 of the main body plate 11, latch devices 14 that engage and disengage with the support posts 20 and center posts 30 on both the left and right sides, and a plurality of handles 15 provided on one surface of the main body plate 11 (the upstream side in the illustrated example) (see Figure 3).

[0011] Furthermore, each watertight body 10 is equipped with vertical watertight materials 16 that are pressed against the support columns 20 and center columns 30 in a continuous vertical direction on both sides of the width direction of the main board 11, horizontal watertight materials 17 that are pressed against the lower immovable part (the lower immovable surface F or the upper end of the lower watertight body 10) in a continuous horizontal direction at the lower end of the main board 11, a first auxiliary watertight material 18 provided at the upper end of the main board 11 and the vertical watertight material 16, and a second auxiliary watertight material 19 that connects the lower end of the vertical watertight material 16 to the horizontal watertight material 17.

[0012] The main body plate 11 is formed in a horizontally elongated rectangular shape from a hard material such as metal, and one end and the other end of the main body plate 11 overlap the water-stop receiving surface 21a1 (see Figure 4) of the support pillar 20 and the water-stop receiving surface 31a of the center pillar 30, respectively, via the vertical watertight material 16. According to the illustrated example, the main body plate 11 is made up of a hollow, horizontally elongated rectangular member formed by drawing, and members covering both side surfaces of this member.

[0013] The tip end of each lower engaging protrusion 12 and each upper engaging protrusion 13 is configured in the shape of a rollable roller, and engages with the lower engaged portion 22 and the upper engaged portion 23 from the upstream side.

[0014] The vertical watertight members 16 are provided on the left and right end sides of the downstream surface of the main body plate 11, extending in the vertical direction. Each vertical watertight member 16 is made of an elastic material such as rubber or elastomer resin and is formed into a continuous, long shape over the entire length of the main plate 11 in the vertical direction. This vertical watertight material 16 is fixed to the downstream side of the main body plate 11 by fitting via a bracket or the like, and protrudes downstream from the main body plate 11. The tip side of this vertical watertight material 16 is formed in a convex cross section with the convex portion facing downstream.

[0015] When the lower engaging protrusion 12 and the upper engaging protrusion 13 engage with the lower engaged portion 22 and the upper engaged portion 23, respectively, and the water stop body 10 is attached to the support pillars 20 and the center pillar 30 on both sides, the left and right vertical watertight materials 16, 16 are continuously pressed against the water stop body receiving surface 21a1 of the support pillar 20 and the water stop body receiving surface 31a of the center pillar 30 in the vertical direction, respectively, and are elastically deformed.

[0016] The lateral watertight member 17 is provided at the lower end of the main body plate 11 across the horizontal direction. The horizontal watertight material 17 is made of an elastic material such as rubber or elastomer resin and is formed in a continuous, long shape across the horizontal direction of the main body plate 11. The horizontal watertight material 17 can be made of the same material as the vertical watertight material 16.

[0017] Both longitudinal ends of this lateral watertight material 17 are in watertight contact with second auxiliary watertight materials 19 (see FIG. 3). When the watertight body 10 is placed on the lower immovable part (the lower immovable surface F or the upper end surface of the adjacent watertight body 10 below), the lateral watertight material 17 and the second auxiliary watertight material 19 are watertightly pressed against this immovable part and elastically deformed.

[0018] The first and second auxiliary watertight materials 18, 19 are made of sponge-like (foam rubber-like) EPDM. The first and second auxiliary watertight materials 18, 19 can also be made of the same material as the vertical watertight material 16 and the horizontal watertight material 17. The first auxiliary watertight material 18 is sandwiched between the lower end of the vertical watertight material 16 of the upper watertight body 10 and the upper end of the vertical watertight material 16 of the adjacent lower watertight body 10, thereby improving the watertightness between them.

[0019] The second auxiliary watertight material 19 is in contact with the lower end surface of the main plate 11 and the lower end surface of the vertical watertight material 16 at one end side of the width of the main plate 11, and also in contact with the end portion of the horizontal watertight material 17 in the width direction, so that no gaps are created between these components and between them and the lower fixed part (the lower fixed surface F or the upper end portion of the lower waterstop 10) (see Figure 3). <About the support> The left and right support pillars 20, 20 support each water stopping body 10 at its end side in the width direction. Each support 20 comprises a support body 21 that is arranged approximately perpendicular to the lower fixed surface F and extends in the vertical direction, a lower engaged portion 22 provided on this support body 21, and an upper engaged portion 23 that is provided on the same support body 21 above the lower engaged portion 22 (see Figure 4). According to this embodiment, a plurality of pairs of the lower engaged portion 22 and the upper engaged portion 23 are provided in the vertical direction so as to correspond to the plurality of water stopping bodies 10, respectively (see FIG. 2).

[0020] The support columns 20, 20 on both sides are connected in a watertight manner to the facing surfaces W1 on both sides of the frame opening A in a building, an underground passage, or the like.

[0021] Here, the visible surface W1 is the upstream visible surface of the pillars, walls, etc. that constitute the skeleton, located on both sides of the skeleton opening A (see Figures 6 and 7). Also, in the figures, the symbol W2 indicates the visible surface of the pillars, walls, etc.

[0022] The support pillar body 21 is made up of a base pillar 21a fixed to the facing surface W1 on both sides of the frame opening A, and a support pillar 21b that protrudes upstream from the base pillar 21a and supports the water stop body 10. The cross section of the support pillar body 21 is integrated into an L-shaped body (see FIG. 6), and the support pillar 21b extends vertically. The support pillar body 21 is formed long so as to vertically straddle the multiple stacked water stop bodies 10.

[0023] According to the illustrated example, the base pillar 21a is a columnar member extending in the vertical direction, and has a water stop body receiving surface 21a1 for receiving the water stop body 10 on its upstream side, closer to the inside in the width direction between the two supports, and a support pillar 21b is attached closer to the outside in the same width direction.

[0024] A substantially plate-shaped elastic watertight material 21c is provided at the lower end of the base pillar 21a so as to be pressed against the lower immovable surface F in a watertight manner.

[0025] The support column 21b is formed by bending a hard metal plate material, for example, into an elongated shape with a substantially U-shaped cross section extending in the vertical direction. The support pillar 21b constituting the left support pillar body 21 and the support pillar 21b constituting the right support pillar body 21 are symmetrical in shape, with openings of their approximately U-shaped cross sections facing each other.

[0026] A lower engaged portion 22 and an upper engaged portion 23 are attached to the inner surface of the support column 21b.

[0027] The support pillar 21b has a plate-shaped portion 21b1 at its upstream portion, which is disposed in a direction intersecting the water flow. The plate-shaped portion 21b1 is located upstream of the lower engaged portion 22 and the upper engaged portion . The plate-shaped portion 21b1 is provided with an opening 21b11 for inserting the lower engaging protrusion 12 from the upstream side, and an opening 21b12 for inserting the upper engaging protrusion 13 from the upstream side.

[0028] The lower edge portion of the upper opening 21b12 in the plate-shaped portion 21b1 functions as an upward protruding stopper portion 21b13 that receives the upper engaging protrusion 13 from the upstream side and stops the tilting when the upper side of the water stop body 10 tilts upstream due to vibration or the like when the latch device 14 is not engaged.

[0029] The lower engaged portion 22 has a protrusion 22a that protrudes upward near the upstream end and functions as a retainer for the lower engaging protrusion 12, and an inclined bottom portion 22b that is downstream of this protrusion 22a and guides the lower engaging protrusion 12 diagonally downward downstream.

[0030] A concave curved surface portion 22b1 (see FIG. 4) is provided at a midpoint on the inclined bottom surface portion 22b toward the downstream side. When the water stop body 10 is attached to both supports 20, 20, this concave curved surface portion 22b1 fits into the lower portion of the lower engaging protrusion 12 to position the lower engaging protrusion 12.

[0031] The upper engaged portion 23 has an inclined top surface portion 23a that guides the upper engaging protrusion 13 diagonally downward downstream, and an engaging top surface portion 23b that contacts the upper end of the upper engaging protrusion 13 when the upper engaging protrusion 13 moves downstream from the inclined top surface portion 23a (see Figure 4).

[0032] The inclined top surface portion 23a guides the upper engaging protrusion 13 diagonally downward downstream when the water stop body 10 is fitted between the support pillar 20 and the center pillar 30 from the upstream side. As a result, the left and right vertical watertight materials 16 are pressed against the water stop body receiving surface 21a1 of the support pillar 20 and the water stop body receiving surface 31a of the center pillar 30, respectively, and elastically contract, and the horizontal watertight materials 17 are also pressed against the immovable part on the lower side (the lower immovable surface F or the upper end of the lower water stop body 10) and elastically contract.

[0033] The locking top surface portion 23b extends substantially horizontally downstream. When the water stop body 10 is fitted further downstream, the locking top surface portion 23b presses against the upper end of the upper engaged portion 23, thereby maintaining the vertical watertight member 16 and the horizontal watertight member 17 in a compressed state.

[0034] <About the center pillar> The center column 30 comprises a center column main body 31 that supports the left and right water stop bodies 10, 10 from the downstream side of the expected flow direction, two support columns 21b', 21b' attached to the center column main body 31 so as to support the left and right water stop bodies 10, 10 between them, and an upstream support part 32 that protrudes from the center column main body 31 upstream in the flow direction and is fastened to the lower fixed surface F (see Figure 5).

[0035] The center pillar body 31 is a long pillar-shaped member having a generally laterally convex cross section (see FIG. 6) that continues in the vertical direction. The center pillar body 31 is provided with left and right water stop body receiving surfaces 31a, 31a that receive the left and right water stop bodies 10, 10, respectively.

[0036] Each water stop body receiving surface 31a of the center pillar body 31 is a surface facing the direction (upstream side) in which the upstream support part 32 protrudes, and is formed as a flat surface that continues vertically. The vertical watertight material 16 of the water stop body 10 is pressed against this water stop body receiving surface 31a (center pillar).

[0037] The center pillar body 31 is also provided with a support pillar mounting surface 31b for mounting the support pillar 21b', so as to be positioned between the left and right water stop body receiving surfaces 31a, 31a (see FIG. 6).

[0038] Two support pole mounting surfaces 31b are provided on the left and right corresponding to the left and right water stopping bodies 10, 10. Each support pillar mounting surface 31b is a surface that continues to the water stop body receiving surface 31a of the center pillar main body 31, and is located closer to the center in the width direction than the water stop body receiving surface 31a. The support column 21b' is fixed to this support column mounting surface 31b by appropriate fixing means (for example, fastening with screws, bolts, rivets, etc., welding, fitting, etc.).

[0039] Each support column 21b' is a member having the same configuration as the support column 21b described above. Therefore, in the drawings, the reference numerals of the respective parts of the support column 21b' are the same as those of the support column 21b. The left support pillar 21b' and the right support pillar 21b' are provided symmetrically with their openings of the approximately U-shaped cross section facing back to back.

[0040] The upstream support part 32 is a plate-shaped member made of a hard metal material, which is connected to the lower end of the center column body 31 so as to support the center column body 31 from below, and which protrudes further upstream than the center column body 31 and the support column 21b'. The tip side of this protruding part widens in the width direction.

[0041] This upstream support portion 32 is provided with a rolling member 33 that rolls on the lower immovable surface F when the center column 30 is transported, a plurality of adjustment feet 34 that abut against the lower immovable surface F when installed, a plurality of fastening devices 35 that are fastened to the lower immovable surface F when installed, and an elastic watertight portion 36 that is pressed against the lower immovable surface F in a watertight manner.

[0042] The rolling members 33 are rollers that rotate around an axis in the width direction, and are provided on both left and right ends on the most upstream side of the upstream support portion 32. When the center post 30 is installed, the rolling member 33 is floating and separated from the lower stationary surface F, and comes into contact with the lower stationary surface F when the center post 30 is tilted.

[0043] The adjustment feet 34 are provided at three locations near the center of the center column body 31 in plan view, and at locations near the left and right rolling members 33, 33. Each adjustment foot 34 is composed of a screw shaft portion 34a that penetrates the upstream support portion 32 in the vertical direction and screws into a nut integrated with the upstream support portion 32, and a disk-shaped seat portion 34b that is integrally formed at the lower end of this screw shaft portion 34a.

[0044] When each adjustment foot 34 is rotated, it faces the upstream support part 32 and moves the adjustment foot 34 in the up and down direction. Therefore, by appropriately adjusting the lengths of the three adjustment feet 34 that abut against the lower immovable surface F, the center pillar 30 can be erected approximately perpendicular to the lower immovable surface F.

[0045] In the illustrated example, the lower immovable surface F is a concrete floor surface. This lower immovable surface F is recessed, and a metal fastening member 40 for firmly fastening the fastening device 35 is embedded in this recessed portion.

[0046] This fastening body 40 consists of a support plate 41 that is positioned approximately flush with the lower immovable surface F and supports the center column 30 from below, a nut-shaped member 42 that is fixed to the back surface of this support plate 41 by welding or the like, and reinforcing materials and steel bars that reinforce the support plate 41, and is fixed to the concrete part below by anchor members, with mortar or the like filling the gaps (see Figure 8).

[0047] According to the example shown in FIG. 8, each fastener 35 is a bolt, with its head hooked onto the upstream support portion 32 and its threaded portion passing downward through the upstream support portion 32 and screwed onto a nut-like member 42 .

[0048] The elastic watertight portion 36 is made of an elastic material such as rubber or elastomer resin, and is provided along the downstream-most edge of the lower surface of the upstream support portion 32 over the entire width of the edge. In the illustrated example, the elastic watertight portion 36 is in contact with the underside of the upstream support portion 32 via a spacer 37 on the upper side, but in another example, it is also possible to increase the thickness of the elastic watertight portion 36 in the vertical direction and omit the spacer 37.

[0049] Also, in the figure, the symbol 38 denotes a reinforcing member that is connected across both the center pillar main body 31 and the upstream support portion 32, and according to the illustrated example, is formed from a hard metal material or the like in a roughly L-shape when viewed from the side. This reinforcing member 38 reinforces the connection between the center pillar main body 31 and the upstream support part 32 so that the center pillar main body 31 is maintained approximately perpendicular to the upstream support part 32 even when water pressure is applied from the upstream side.

[0050] Furthermore, a tensioning tool 50 is provided between the center post 30 and the lower immovable surface F of the above-mentioned configuration, if necessary (see Figs. 1 and 2). The tensioning tool 50 is configured to expand and contract when rotated, and is configured using, for example, a turnbuckle. This tensioning device 50 allows the center post 30 to be pulled downward, which in turn generates an upward force between the left and right water stopping bodies 10, 10, preventing the center sides of the two water stopping bodies 10, 10 and the center post 30 from floating up.

[0051] <Installation method and effects of water stop devices> Next, a procedure for installing the waterproofing device 1 having the above-described configuration in the body opening A will be described. According to the example shown in FIG. 6, an opening and closing device 60 is installed inside the body opening A in advance. The opening and closing device 60 is a hinged door in which a door body 62 is opened and closed inside a frame body 61, and the frame body 61 is fastened and fixed to the visible surface W2 on both sides of the opening A of the main body. Other examples of the opening and closing device 60 include a folding door, a sliding door, a shutter device, and other opening and closing devices other than those shown in the drawings.

[0052] First, base columns 21a are fastened and fixed to the facing surfaces W1, W1 on both sides of the body opening A, and further, support columns 21b are fixed to the base columns 21a (see FIG. 6). Furthermore, a center pillar 30 is installed on the center side of the body opening A in the width direction, upstream of the opening / closing device 60 and the sight line W1, so as to be close to the opening / closing device 60. At this time, the water stop body receiving surface 21a1 of the support column 21b and the water stop body receiving surface 31a of the center column 30 are made substantially flush with each other.

[0053] Next, the left and right water stopping bodies 10, 10 are fitted to the left and right sides of the center pillar 30, respectively. The left and right water stopping bodies 10, 10 respectively engage their left and right lower engaging protrusions 12 and upper engaging protrusions 13 with the lower engaged portions 22 and upper engaged portions 23 of the support pillars 20 and the lower engaged portions 22 and upper engaged portions 23 of the center pillars 30, thereby watertightly closing the body opening A.

[0054] In this state, when the left and right water stop bodies 10, 10 are subjected to water pressure, a force acts on the center column 30 that supports these water stop bodies 10, 10 in a direction that causes it to fall downstream, and this force causes a tensile force to act on the upstream support part 32 and the fastening device 35 in a direction that moves them away from the lower fixed surface F. However, since the center post 30 is firmly attached to the fastening member 40 on the lower stationary surface F via the upstream support portion 32 and the fastening fixture 35, etc., it can withstand the tensile force and is prevented from bending downstream.

[0055] Moreover, all of the components of the center post 30 are located upstream of the sight line W1. In other words, no components of the center post 30 are located downstream of the sight line W1. Therefore, the water stop device 1 can be prevented from interfering with objects such as the opening and closing device 60 inside the body opening A. Therefore, in order to install the water stop device 1, it is not necessary to remove the opening and closing device 60 or to install the water stop device 1 far away from the body opening A on the upstream side.

[0056] <Modification> According to the above embodiment, the fastening device 35 is a bolt that is fastened to the nut-shaped member 42 embedded in the lower immovable surface F. However, this fastening device 35 may be any device that can fasten the upstream support part 32 to the lower immovable surface F and can withstand the tensile force caused by water pressure; as another example, an oar anchor or other anchor member may be used.

[0057] According to the above embodiment, the center pillar 30 is arranged upstream of the water stop body 10, but as another example, it is also possible to selectively arrange this center pillar either upstream or downstream of the water stop body 10. In other words, in another example of this center pillar, a water-stop body receiving surface for receiving the left and right water-stop bodies 10, 10 and a support pillar for supporting the left and right water-stop bodies 10, 10 can be provided on the opposite side of the center pillar 30 relative to the protruding direction of the upstream support portion 32. In another example of this center pillar, when it is installed downstream of the water stop body 10, the upstream support part 32 is arranged to protrude downstream, and the water stop body receiving surface on the opposite side supports the water stop body 10 from the downstream side, and the water stop body 10 is supported by the support pillar on the opposite side.

[0058] Furthermore, the present invention is not limited to the specific configurations described above, and can be modified as appropriate within the scope of the present invention.

[0059] <Summary> As described above, the above embodiments disclose the following inventions. (1) A water stopping device comprising water stopping bodies arranged on both the left and right sides so as to intersect with the expected water flow direction, left and right support pillars supporting the left and right water stopping bodies at both ends, and a center pillar supporting the left and right water stopping bodies at the center, wherein the center pillar comprises a center pillar main body that supports the left and right water stopping bodies from the downstream side of the flow direction, and an upstream support part that protrudes from the center pillar main body to the upstream side of the flow direction and is fastened to a lower fixed surface (see Figures 1 to 8). (2) The water-stopping device described in (1) (see Figures 6 to 7) is characterized in that the center pillar body is provided with water-stopping body receiving surfaces that receive the left and right water-stopping bodies from the downstream side, facing the direction in which the upstream support portion protrudes. (3) The water-stop device described in (2) (see Figures 6 to 7) is characterized in that the water-stop body receiving surfaces are provided on both the left and right sides of the center column body, and a support pillar is provided between the left and right water-stop body receiving surfaces to support the left and right water-stop bodies therebetween, and the upstream support portion protrudes upstream beyond the support pillar. (4) An installation structure for a watertight device according to any one of (1) to (3), characterized in that no component parts of the center pillar are located downstream of the visible surfaces on both sides of the opening in the body (see Figures 6 and 7). (5) A water stop device installation structure described in (4) (see Figures 6 to 7) characterized in that an opening / closing device is installed inside the opening of the main body, and the center pillar is installed upstream of the opening / closing device. (6) An installation structure for a water stop device as described in (4) or (5) (see Figures 6 to 7), characterized in that the left and right support pillars are provided on the facing surfaces on both sides of the opening in the main body, and the center pillar is provided upstream of the facing surfaces. [Explanation of symbols]

[0060] 1:Water stop device 10: Water stop body 11: Main board 20: Prop 21: Support body 21a: Base pillar 21a1: Water stop body receiving surface (post) 21b: Support pillar 30: Middle pillar 31: Middle pillar body 31a: Water stop body receiving surface (middle pillar) 32: Upstream support part 35: Fastener A: Body opening W1: Front side W2: Prospective side

Claims

1. A water stop device comprising water stop bodies arranged on both sides so as to intersect with the expected water flow direction, left and right support columns supporting the left and right water stop bodies at both ends, and a center column supporting the left and right water stop bodies at the center, The water-stopping device is characterized in that the center pillar comprises a center pillar main body that receives the left and right water-stopping bodies from the downstream side of the flow direction, and an upstream support portion that protrudes from the center pillar main body to the upstream side of the flow direction and is attached to a lower fixed surface.

2. A water-stopping device as described in claim 1, characterized in that the center pillar body has water-stopping body receiving surfaces that receive the left and right water-stopping bodies from the downstream side, facing in the direction in which the upstream support portion protrudes.

3. The water stop body receiving surfaces are provided on both the left and right sides of the center pillar body, A support pillar is provided between the left and right water stop body receiving surfaces to support the left and right water stop bodies therebetween, 3. The water stop device according to claim 2, wherein the upstream support portion protrudes upstream beyond the support pillar.

4. 4. A water stop device installation structure according to claim 1, wherein no component of the center pillar is located downstream of the visible surface on both sides of the opening in the main body.

5. An opening and closing device is installed inside the opening of the structure.

5. The water stop device installation structure according to claim 4, wherein the center pillar is installed upstream of the opening and closing device.

6. 5. The water stop device installation structure according to claim 4, wherein the left and right support pillars are provided on the facing surfaces on both sides of the opening in the body, and the center pillar is provided upstream of the facing surfaces.

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