Water-stopping device and method for installing this water-stopping device

Abstract

To improve workability when setting cut-off bodies at support pillars on both sides.SOLUTION: A cut-off device includes: a tabular cut-off body 1 raised so as to cross the flow direction of water; and left and right support pillars 2 for supporting the cut-off body 1 on both sides. The cut-off body 1 includes: a body plate 10; a lower side engagement protrusion part 11 protruding laterally on the lower side of the body plate; and an upper side engagement protrusion part 12 protruding left and right laterally further on the upper side than the lower side engagement protrusion part 11 of the body plate respectively. Each of the left and right support pillars 2 includes: a lower side engagement recess part 41 in which the lower side engagement protrusion part 11 is inserted from the upstream side of the flow direction and is engaged inside; and an upper side engagement recess part 51 in which the upper side engagement protrusion part 12 is inserted from the upstream side and is engaged inside. A recess curve surface part 41c provided at the lower side engagement recess part 41 is partially fitted to the lower side of an outer peripheral surface of the lower side engagement protrusion part 11.SELECTED DRAWING: Figure 11

Description

【Technical Field】 【0001】 The present invention relates to a water-stop device that closes an opening of a building or an underpass with a substantially plate-shaped water-stop body during a flood to prevent water intrusion, and a method for installing this water-stop device. 【Background Art】 【0002】 When floodwater due to a typhoon or heavy rain pours into an opening of a building or an underpass, it may cause significant damage due to flooding. Therefore, in preparation for such a situation, columns are erected in advance on both sides of the opening of a building or an underpass, and a plate-shaped water-stop plate is stored near these columns. When floodwater 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】 Japanese Patent Application Laid-Open No. 2005-68964 【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 bolts. 【Means for Solving the Problems】 【0005】 In view of such problems, the present invention has the following configuration. A water-stop device including a plate-shaped water-stop body erected so as to intersect the direction of water flow, and left and right columns supporting the water-stop body on both sides, wherein the water-stop body includes a main body plate, a lower engaging protrusion protruding laterally below the main body plate, and above the lower engaging protrusion of the main body plate on the aforementioned side above thrustEach of the left and right support columns is provided with an upper engaging projection and an upper engaging recess into which the lower engaging projection is inserted from the upstream side in the flow direction and engages internally, and an upper engaging recess into which the upper engaging projection is inserted from the upstream side and engages internally. The lower engaging recess and the upper engaging recess are formed such that after the lower engaging projection is inserted into the lower engaging recess and the entire water-stopping body is lowered, the upper engaging projection is inserted into the upper engaging recess. A water-stopping device characterized by the following features. [Effects of the Invention] 【0006】 As described above, the present invention is configured in a way that improves workability when setting the water-stopping bodies on 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 an enlarged plan view of the main part of the water-stopping device. [Figure 3] This is a disassembled perspective view of the water-stopping device. [Figure 4] This is a perspective view showing one of the water-stopping elements in the water-stopping device. [Figure 5] This is a view of the water-stopping structure from the front. [Figure 6] This is a view of the water-stopping structure from the side. [Figure 7] This is a close-up perspective view of the main part showing the installation of the first auxiliary watertight material on the watertight body. [Figure 8] This is a close-up perspective view of the main part showing the installation of a second auxiliary watertight seal on the watertight body. [Figure 9] This is a magnified perspective view of the key parts showing how the upper and lower water-stopping bodies are superimposed. [Figure 10] This is a magnified perspective view of the main part of the support column. [Figure 11] (a) is a side view of the upper engaging member having an upper engaging recess, and (b) is a side view of the lower engaging member having a lower engaging recess. [Figure 12](a) is a side view of the upper engaging member having an upper engaging recess, and (b) is a side view of the lower engaging member having a lower engaging recess, showing the state in which the water-stopping body is subjected to water pressure and the lower engaging projection and upper engaging projection move downstream. [Figure 13] (a) to (c) are side views sequentially showing how the water-stopping body is attached to the support column. [Figure 14] (d) to (f) are side views sequentially showing how the water-stopping body is attached to the support column. [Figure 15] This is a longitudinal cross-sectional view showing another example of a water-stopping body; (a) shows the upper water-stopping body engaged with the lower water-stopping body, and (b) shows the upper and lower water-stopping bodies fitted together. [Modes for carrying out the invention] 【0008】 Next, embodiments of the present invention will be described in detail with reference to the drawings. In the following explanation, "upstream side" means the upstream side in the direction of the assumed water flow, and "downstream side" means the downstream side in the direction of the assumed water flow, which is the opposite direction to the upstream side. 【0009】 The water-stopping device A comprises several (three in the illustrated example) roughly plate-shaped water-stopping bodies 1 that are erected and stacked so as to intersect the direction of water flow, left and right support columns 2 that support these water-stopping bodies on both sides, and a base 3 that supports these left and right support columns in an upright position (see Figures 1 and 3). 【0010】 Each water-stopping body 1 integrally comprises a horizontally elongated rectangular main body plate 10, lower engaging projections 11, 11 projecting to the left and right from the lower side of the main body plate, upper engaging projections 12, 12 projecting to the left and right from above the lower engaging projections 11 of the main body plate 10, latch devices 13, 13 that engage with and disengage from the left and right support columns 2, 2, and first to third handles 21, 22, 23 provided on one side of the main body plate 10 (the upstream side in the illustrated example). Furthermore, each water stop member 1 integrally includes a vertical watertight material 31 that is continuously pressed against the support column 2 in the vertical direction on both sides in the lateral width direction of the main body plate 10, a horizontal watertight material 32 that is continuously pressed against the lower immovable part in the lateral width direction at the lower end of the main body plate 10, a first auxiliary watertight material 33 fixed to the upper ends of the main body plate 10 and the vertical watertight material 31, and a second auxiliary watertight material 34 fixed to the lower ends of the main body plate 10 and the vertical watertight material 31. 【0011】 The main body plate 10 is formed in a horizontally long rectangular shape by a hard material such as metal, and one end side and the other end side in its longitudinal direction overlap the receiving surfaces 2a (see FIG. 2) of the support columns 2, respectively. According to the illustrated example, this main body plate 10 is composed of a hollow horizontally long rectangular member formed by drawing and members covering both side surfaces of this member. As another example of this main body plate 10, it is possible to adopt a mode consisting of a single horizontally long rectangular member, a mode in which a plurality of members other than the illustrated example are appropriately combined, and the like. 【0012】 The main body plate 10 is provided with a drain hole (not shown) for discharging water that enters the inside from the joint portion between members such as the first to third handles 21, 22, 23 to the outside. Therefore, when water accumulates around the water stop member 1, the water stop member 1 will sink due to its own weight. 【0013】 Each lower engaging protrusion 11 and each upper engaging protrusion 12 are each configured in a roller shape that can roll within the lower engaging recess 41 and the upper engaging recess 51, respectively. 【0014】 Specifically, this lower engaging protrusion 11 includes a shaft portion 11a fixed to the side surface of the main body plate 10 and a rolling member 11b rotatably supported on the protruding end side of this shaft portion 11a, and protrudes laterally from a portion near the lower end of the side surface of the main body plate 10. 【0015】 Further, the upper engaging protrusion 12 includes a shaft portion 12a fixed to the side surface of the main body plate 10 and a rolling member 12b rotatably supported on the protruding end side of this shaft portion 12a, and protrudes laterally from a portion near the upper end of the side surface of the main body plate 10. 【0016】 Each of the rolling members 11b and 12b is a cylindrical roller that is rotatably mounted on the shaft portion 11a via a bearing. These rolling members 11b and 12b reduce frictional resistance at the contact points during the process of fitting the lower engaging projection 11 and upper engaging projection 12 into the lower engaging recess 41 and upper engaging recess 51, respectively, thereby improving the ease of installation. 【0017】 The latching devices 13 are provided on the left and right ends of the main body plate 10, near the upper end of the upstream side. Each latching device 13 is configured to extend and retract a horizontally oriented locking / unlocking rod to the side by manual operation. The locking / unlocking rod is inserted into and removed from the locking / unlocking hole 2b of the support column 2. 【0018】 The first to third handles 21, 22, and 23 are appropriately arranged on the upstream surface of each main plate 10, spaced apart in the lateral and vertical directions, so that they can be grasped when attaching multiple water-stopping bodies 1 to the support columns 2, 2 on both sides from the upstream side of the water flow. Each of these first to third handles 21, 22, and 23 has a rod-shaped grip portion 20a extending in the vertical direction, a hand support portion 20b that receives the hand gripping the grip portion from above and is fixed to the main body plate 10, and a lower fixing portion 20c that is fixed to the main body plate 10 at the lower end of the grip portion 20a. In one example shown in Figure 6, it is formed in a U-shape when viewed from the side (see Figure 6). 【0019】 The first handle 21 is provided on the upstream side of the main body plate 10, near the left and right ends respectively, so that it can be grasped with one hand (right or left hand) (see Figures 4 and 5). 【0020】 The second handle 22 is positioned horizontally near the center of the upstream side of the main plate 10 so that it can be grasped by the other hand (left or right hand). Each second handle 22 is positioned above the first handle 21. 【0021】 Furthermore, the third handle 23 is provided below each second handle 22 so that it can be grasped with the other hand. In the illustrated example, this third handle 23 is located directly below each second handle 22 and at the same height as the first handle 21. 【0022】 The distance X1 between the first handle 21 on the left end (or right end) and the second handle 22 and third handle 23 on the left (or right) side closer to the center, and the distance X2 between the first handle 21 on the left end (or right end) and the second handle 22 and third handle 23 on the right (or right) side closer to the center, are set appropriately according to the average person's shoulder width. In other words, workers can place their left and right hands on the first handle 21 and the second handle 22 or the third handle 23 located on both sides of the interval X1, or on the first handle 21 and the second handle 22 or the third handle 23 located on both sides of the interval X2. 【0023】 The vertical watertight material 31 is provided on the left and right ends of the downstream surface of the main body plate 10, extending vertically. Each vertical watertight material 31 is formed from an elastic material such as rubber or elastomer resin in a continuous, elongated shape that extends over the entire length of the main plate 10 in the vertical direction. This vertical watertight material 31 is fixed to the downstream side of the main plate 10 by fitting via a bracket or the like, and protrudes downstream from the main plate 10. The protruding end of this vertical watertight material 31 is formed in a convex shape in cross-section, with the convex portion facing downstream (see Figure 7). When the watertight body 1 is attached to the support columns 2, 2 on both sides, the vertical watertight material 31 is pressed against the receiving surface 2a and undergoes elastic deformation. 【0024】 The lateral watertight material 32 is provided horizontally at the lower end of the main body plate 10. This lateral watertight material 32 is formed from an elastic material such as rubber or elastomer resin in a long, continuous shape extending laterally across the main plate 10. Both ends of this lateral watertight material 32 in the longitudinal direction are in contact with a second auxiliary watertight material 34, which will be described later, to improve watertightness (see Figure 8). This lateral watertight material 32 is fixed to the lower end surface of the main body plate 10 by fitting via a bracket or the like, and protrudes downward from the main body plate 10. The lower end side of this lateral watertight material 32 is formed in a convex shape in cross-section, with the convex portion facing downward. When the watertight body 1 is placed on a stationary surface below it (the floor surface, or the upper end surface of an adjacent watertight body 1 below it), the lateral watertight material 32 is pressed against this stationary surface and undergoes elastic deformation. 【0025】 Furthermore, the vertical watertight material 31 and the horizontal watertight material 32 may be made from the same long elastic member, cut to an appropriate length. 【0026】 The first and second auxiliary watertight materials 33 and 34 are arranged so as to be sandwiched between the lower end of the vertical watertight material 31 of the upper watertight body 1 and the upper end of the vertical watertight material 31 of the adjacent lower watertight body 1. 【0027】 To explain in detail, the first auxiliary watertight material 33 covers one end of the main body plate 10 in the width direction, straddling the upper end surface of the main body plate 10 and the upper end surface of the vertical watertight material 31, and is bonded to these upper end surfaces via adhesive (for example, double-sided tape or adhesive). This first auxiliary watertight material 33 is made of an elastic material that is softer or has lower rubber hardness than the longitudinal watertight material 31. In one example of this embodiment, the first auxiliary watertight material 33 is formed in the shape of a rectangular plate from a sponge-like (foamed rubber-like) EPDM. 【0028】 Furthermore, the first auxiliary watertight material 33 has a vertical shrinkage range Δt (see Figure 9) that is set to be larger than the dimensional tolerance range (the difference between the maximum and minimum values ​​of the dimensional tolerance) of the vertical length of the vertical watertight material 31. Here, the shrinkable amount refers to the maximum value of the shrinkage dimension (= dimension before shrinkage - dimension after shrinkage) when the first auxiliary watertight material 33 is compressed vertically and shrinks elastically. Furthermore, the dimensional tolerance width is the tolerance for the vertical length dimension of the vertical watertight material 31. In one example of this embodiment, the shrinkable amount is set to approximately 1.7 mm, and the dimensional tolerance width is set to 1.0 mm. That is, the tolerance for the vertical length of the vertical watertight material 31 is ±0.5 mm. According to this configuration, the first auxiliary watertight material 33 absorbs the dimensional tolerance width, bringing the upper and lower vertical watertight materials 31, 31 into close contact and improving the watertight performance. 【0029】 In addition, according to the above embodiment, the amount of shrinkage Δt of the first auxiliary watertight material 33 is made larger than the dimensional tolerance of the vertical length of the vertical watertight material 31. However, as an alternative example, it is also possible to make the amount of shrinkage of the second auxiliary watertight material 34 larger than the aforementioned dimensional tolerance, or to make the total amount of shrinkage of the first auxiliary watertight material 33 and the second auxiliary watertight material 34 larger than the aforementioned dimensional tolerance. 【0030】 Furthermore, the second auxiliary watertight material 34 straddles the lower end surface of the main body plate 10 and the lower end surface of the vertical watertight material 31 at one end of the main body plate 10 in the width direction, and is bonded to these lower end surfaces via adhesive (for example, double-sided tape or adhesive). This second auxiliary watertight material 34 is formed from an elastic material that has the same hardness as the longitudinal watertight material 31, or is softer than the longitudinal watertight material 31. In one example of this embodiment, the second auxiliary watertight material 34 is formed in a rectangular parallelepiped shape (or block shape) from a rubber material having approximately the same hardness as the vertical watertight material 31. 【0031】 In each watertight body 1, each second auxiliary watertight material 34 has one side in contact with the end of the lateral watertight material 32 (see Figure 8). 【0032】 Furthermore, when the water-sealing bodies 1 are stacked vertically, the lower end surface of the second auxiliary watertight material 34 on the upper water-sealing body 1 is pressed against the upper end surface of the first auxiliary watertight material 33 on the lower water-sealing body 1 (see Figure 9). 【0033】 Each support column 2 is equipped with a lower engaging recess 41 into which the lower engaging projection 11 of each water-stopping body 1 is inserted from the upstream side in the direction of water flow and engaged internally, and an upper engaging recess 51 into which the upper engaging projection 12 of the water-stopping body 1 is inserted from the upstream side and engaged internally. 【0034】 More specifically, each support column 2 is formed in a long column shape by drawing or other means of a hard metal material, having a receiving surface 2a on the outside and a hollow portion extending vertically on the inside. In the hollow portion, multiple sets (three in the illustrated example) of lower engaging members 40 having a lower engaging recess 41 and upper engaging members 50 having an upper engaging recess 51 are provided at intervals in the vertical direction. These multiple sets of lower engaging members 40 and upper engaging members 50 correspond to multiple water-stopping bodies 1. 【0035】 The receiving surface 2a is located downstream in the direction of water flow from the lower engaging recess 41 and the upper engaging recess 51, and receives the water-stopping body 1 from the downstream side with a vertical watertight material 31 interposed between it and the main body plate 10. This receiving surface 2a is formed on the inside of both support columns 2, 2 by recessing the inner surface of each support column 2 in a stepped shape in cross-section (see Figure 2), and the flat surface is continuous in the vertical direction. 【0036】 According to the above configuration, when the lower engaging projection 11 and the upper engaging projection 12 of the water-stopping body 1 are engaged with the lower engaging recess 41 and the upper engaging recess 51, respectively, on the side of the water-stopping body 1, the vertical watertight material 31 is compressed by being sandwiched between the main plate 10 and the receiving surface 2a, and on the lower side of the water-stopping body 1, the horizontal watertight material 32 is compressed by being sandwiched between the main plate 10 and the lower immovable surface. 【0037】 As shown in Figures 10 and 11, the lower engaging member 40 and the upper engaging member 50 are each constructed in a substantially rectangular block shape and have a lower engaging recess 41 and an upper engaging recess 51 that are open on the upstream side. 【0038】 As shown in Figure 11(b), the lower portion (bottom portion) of the lower engagement recess 41 is provided with a projection 41a that protrudes upward near the upstream end, a first inclined bottom surface portion 41b downstream of the projection 41a that guides the rolling member 11b of the lower engagement projection 11 diagonally downward downstream, a concave curved surface portion 41c further downstream of the first inclined bottom surface portion 41b that partially fits onto the outer circumferential surface of the rolling member 11b, a flat bottom surface portion 41d that continues substantially horizontally further downstream of the concave curved surface portion 41c, and a planar restricting portion 41e that rises up at the downstream end of the bottom surface portion 41d. 【0039】 The projection 41a functions as a retaining projection that prevents the lower engaging projection 11 from disengaging from the lower engaging recess 41 toward the upstream side. 【0040】 The first inclined bottom surface 41b guides and moves the lower engaging projection 11 diagonally downward toward the downstream side, thereby compressing the vertical watertight material 31 between the main plate 10 and the receiving surface 2a, and compressing the horizontal watertight material 32 between the main plate 10 and the lower fixed surface. A concave curved surface 41c is provided at a point along the first inclined bottom surface 41b toward the downstream side. 【0041】 The concave curved surface portion 41c is formed in a concave shape with a curvature approximately the same as that of the outer circumferential surface of the rolling member 11b. When the lower engaging projection 11 and the upper engaging projection 12 enter the interior of the lower engaging recess 41 and the upper engaging recess 51, respectively, the concave curved surface portion 41c partially fits onto the underside of the outer circumferential surface of the rolling member 11b, thereby positioning the lower engaging projection 11. 【0042】 The first inclined bottom surface 41b then continues diagonally downward and downstream from the concave curved surface 41c and connects to the substantially horizontal bottom surface 41d. 【0043】 When the water-stopping body 1 is subjected to water pressure while the rolling member 11b is fitted into the concave curved surface portion 41c, the water-stopping body 1 is subjected to a downstream force due to the water pressure and a downward force due to the weight of the water-stopping body 1 itself. As a result, the water-stopping body 1 moves diagonally downward downstream, with the rolling member 11b aligned along the portion of the first inclined bottom surface portion 41b downstream of the concave curved surface portion 41c. This compresses the second auxiliary watertight material 34, increasing its watertightness. If further water pressure is applied, the water-stopping body 1 will move approximately horizontally downstream along the bottom surface 41d, with the rolling member 11b aligned with the bottom surface 41d. This prevents the water-stopping body 1 from sinking too far downward, which could cause the second auxiliary watertight material 34 to deteriorate or be damaged. When the rolling member 11b moves downstream along the first inclined bottom surface 41b, the vertical watertight material 31 is further compressed, while the amount of compression of the horizontal watertight material 32 remains almost unchanged. 【0044】 The restricting portion 41e receives the rolling member 11b when the rolling member 11b moves downstream on the bottom portion 41d, and restricts the movement of the rolling member 11b. 【0045】 Furthermore, the top portion 41f within the lower engagement recess 41 is formed in a substantially horizontal, flat surface shape. This top portion 41f is positioned above the lower engagement projection 11 at a distance. 【0046】 Furthermore, the upper portion of the upper engaging recess 51 is provided with an inclined top surface 51a that guides the rolling member 12b of the upper engaging projection 12 diagonally downward downstream, and a locking top surface 51b that contacts the upper end of the rolling member 12b when it moves further downstream than the inclined top surface 51a. 【0047】 The inclined top surface 51a is designed so that when the water-stopping body 1 moves downstream, the vertical watertight material 31 is sandwiched and compressed between the main plate 10 and the receiving surface 2a, and the horizontal watertight material 32 is sandwiched and compressed between the main plate 10 and the lower immovable surface. 【0048】 The locking top surface 51b comes into contact with the upper end of the rolling member 12b when the water-stopping body 1 moves further downstream, thereby maintaining the compressed state of the lateral watertight material 32. This locking top surface 51b extends approximately horizontally toward the downstream side. 【0049】 Within the upper engaging member 50, a space S is secured below the locking top surface 51b that allows the upper engaging projection 12 (rolling member 12b) to move downward without contacting the surrounding portion (see Figure 12). Therefore, when the water-stopping body 1 is subjected to water pressure while the rolling member 12b is in contact with the locking top surface 51b, on the lower engaging member 40 side, the lower engaging projection 11 moves diagonally downward downstream of the concave curved surface 41c along the first inclined bottom surface 41b, and on the upper engaging member 50 side, the rolling member 12b moves downward away from the locking top surface 51b and is positioned in space S without contacting the surrounding parts. Therefore, it is possible to prevent excessive load from being applied to the fastening portion (e.g., a screw, etc.) of the upper engaging member 50 to the support column 2, which could cause damage to this fastening portion. 【0050】 Furthermore, a bottom projection 51c is provided at the bottom of the upper engagement recess 51, upstream of the upper engagement projection 12 that contacts the locking top surface 51b, and projecting upward above the lower end of the upper engagement projection 12 (more specifically, the rolling member 12b). This bottom projection 51c prevents the upper engaging projection 12 from coming out of the upper engaging recess 51 due to an unexpected impact or the like, after the upper engaging projection 12 has engaged with the upper engaging recess 51. 【0051】 Furthermore, on the bottom surface of the upper engaging recess 51, downstream of the bottom projection 51c, there is a substantially horizontally continuous flat bottom surface portion 51d and a planar restricting portion 51e that rises up at the downstream end of the bottom surface portion 51d. 【0052】 The bottom portion 51d is located below the rolling member 12b that is in contact with the locking top portion 51b (see Figure 11). The restricting portion 51e receives the rolling member 12b when it moves downstream along the locking top surface portion 51b and restricts its movement. 【0053】 Furthermore, in the lower engaging member 40 and upper engaging member 50 of the above configuration, the vertical dimension of the concave portion of the lower engaging recess 41 is larger than the vertical dimension of the concave portion of the upper engaging recess 51 (see Figure 11). More specifically, the dimension H1 of the opening of the lower engaging recess 41 is larger than the dimension H2 of the opening of the upper engaging recess 51. Furthermore, the dimension H3 of the inner (downstream) portion of the lower engaging recess 41 is larger than the dimension H4 of the inner portion of the upper engaging recess 51. According to these dimensional settings, as shown in Figure 14, the workability is good when the lower engaging projection 11 is first engaged with the lower engaging recess 41, and then the upper engaging recess 51 is engaged. 【0054】 Furthermore, the base 3 is constructed as a single, concave shape when viewed from the front, consisting of vertical bases 3a, 3a erected at intervals to the left and right, and a horizontal base 3b connecting the lower ends of these vertical bases (see Figure 1). 【0055】 Each vertical base portion 3a is formed from a metal material into a columnar shape that is longer vertically than the support column 2. The support column 2 is fixed to this vertical base 3a with its downstream side in contact with it. This fixing method can be screwing, fitting, welding, or the like. 【0056】 The lateral base portion 3b is formed in the shape of a rectangular plate that contacts the immovable surface below the metal material. This lateral base portion 3b is fixed to the lower ends of the vertical base portions 3a, 3a on both sides by appropriate fixing means, as described above. 【0057】 Next, the procedure for fitting the water-stopping body 1 onto the support columns 2, 2 on both sides of the water-stopping device A with the above configuration will be explained in detail. 【0058】 First, the workers install the first water-stopping body 1 near the bottom of the left and right support pillars 2,2. In this case, for example, if two people are working together, one worker places their left hand on the first handle 21 on the far left and their right hand on the second handle 22 on the upper left side near the center, and lifts the water-stopping body 1. Alternatively, the right hand may be placed on the third handle 23 on the lower left side near the center. 【0059】 The other worker places their right hand on the first handle 21 on the far right and their left hand on the second handle 22 on the upper right side or the third handle 23 on the lower right side to lift the water-stopping body 1. 【0060】 Furthermore, when working alone, the worker can hold the tool with good balance and ease of use by placing their hands on the first handle 21 on the far left and the second handle 22 on the upper right side near the center, or the first handle 21 on the far right and the second handle 22 on the upper left side near the center. Furthermore, workers can also use the other two handles to perform their tasks. 【0061】 During the lifting operation, the hand gripping the handle's grip portion 20a comes into contact with the handle's hand rest portion 20b, thus preventing it from sliding upward. Furthermore, in conventional technologies, for example, where a handle is provided at the upper end of the water-stopping body, the handle of the lower water-stopping body may interfere with the upper water-stopping body during stacking. However, in the water-stopping body 1 with the above configuration, each handle is provided on the surface of the water-stopping body 1, making it less likely for the handles to interfere with other components. Furthermore, as in this embodiment, when the first to third handles 21, 22, and 23 are provided vertically, the stacking workability, which involves grasping each handle to lift the water-stopping body 1 and then lowering it to stack it on top of the lower water-stopping body 1, is better than that of a water-stopping body (not shown) that is only equipped with horizontally oriented handles. 【0062】 When attaching the water-stopping body 1 to the left and right support columns 2, 2, the lower engaging projection 11 of the water-stopping body 1 is fitted into the lower engaging recess 41 of the support column 2 on each side, and then the upper engaging projection 12 of the water-stopping body 1 is fitted into the upper engaging recess 51 of the support column 2. 【0063】 To explain in more detail, first, with the upper part of the water-stopping body 1 tilted upstream, the lower engaging projection 11 is brought close to the lower engaging recess 41 (see Figure 13(a)), and the lower engaging projection 11 is inserted into the lower engaging recess 41 (see Figure 13(b)). Next, the entire water-stopping body 1 is lowered so that the rolling member 11b of the lower engaging projection 11 comes into contact with the first inclined bottom surface 41b of the lower engaging recess 41 (see Figure 13(c)). 【0064】 Next, rotate the upper part of the water-stopping body 1 downstream so that it is raised, and insert the upper engaging projection 12 into the upper engaging recess 51 (see Figure 14(d)). 【0065】 Then, the entire water-stopping body 1 is moved diagonally downward downstream by aligning the rolling member 11b of the lower engaging projection 11 with the first inclined bottom surface 41b and the rolling member 12b of the upper engaging projection 12 with the inclined top surface 51a. During this movement, the vertical watertight material 31 of the watertight body 1 is pressed against the receiving surface 2a of the support column 2 and contracts, and the horizontal watertight material 32 of the watertight body 1 is pressed against the lower immovable surface and contracts. 【0066】 Once the rolling member 11b of the lower engaging projection 11 is positioned by overlapping with the concave curved surface 41c of the lower engaging recess 41, the upper part of the water-stopping body 1 is rotated to further raise it, and the rolling member 12b of the upper engaging projection 12 is locked to the locking top surface 51b (Figure 14(e)). During the aforementioned rotation, the vertical watertight material 31 of the watertight body 1 is further pressed against the support column 2 and contracts against the receiving surface 2a. 【0067】 Through these steps, the watertight body 1 fits its lower engaging projection 11 into the lower engaging recess 41 and its upper engaging projection 12 into the upper engaging recess 51, becoming almost upright (see Figure 14(f)), and exhibiting watertight performance through the vertical watertight material 31 and the horizontal watertight material 32. In this upright state, the latch device 13 is manually operated to engage with the engagement hole 2b. 【0068】 Next, the second water-stopping body 1 is placed on top of the first water-stopping body 1 in its upright position. This water-stopping body 1 is also attached to the support column 2 in the same manner as described above. Furthermore, the second and subsequent (third in the illustrated example) water-stopping bodies 1 are attached to the support column 2 in the same manner. 【0069】 According to the above configuration, even if there are irregularities remaining on the lower end of the vertical watertight material 31 of the upper watertight body 1 or the upper end of the vertical watertight material 31 of the lower watertight body 1 due to cutting work, the first auxiliary watertight material 33 and the second auxiliary watertight material 34 are sandwiched between these lower and upper ends and undergo elastic deformation, thereby preventing gaps from forming between these lower and upper ends due to the irregularities, and consequently maintaining a high level of watertightness between the upper and lower vertical watertight materials 31, 31. 【0070】 Furthermore, the first auxiliary watertight material 33 and the second auxiliary watertight material 34 are bonded to the main body plate 10 so as to straddle the vertical watertight material 31 or the horizontal watertight material 32, and are sandwiched between the vertically adjacent main body plates 10, so they do not easily come off. 【0071】 With multiple water-blocking bodies 1 attached to the support column 2 in this manner, if water accumulates upstream due to a flood or the like and the water level rises, each water-blocking body 1 will be pushed downstream by the water pressure. Therefore, the lower engaging projection 11 of each water-stopping body 1 moves downstream within the lower engaging recess 41, and the upper engaging projection 12 of the water-stopping body 1 moves downstream along the locking top surface 51b within the upper engaging recess 51. Therefore, the pressure-contact state of the upper engaging recess 51 is maintained, and the vertical watertight material 31 is pressed more strongly against the receiving surface 2a, resulting in high watertight performance. 【0072】 <Variation> The water-stopping device A with the above configuration can be modified as needed, as described below. 【0073】 For example, in the above embodiment, the lower engaging projection 11 and the upper engaging projection 12 are preferably equipped with rotatable rolling members 11b and 12b on their tip ends. However, as an alternative example, the tip ends of these lower engaging projections 11 and upper engaging projections 12 can be configured in an axial shape without rolling members. 【0074】 Furthermore, in the above embodiment, the lower engaging projection 11 and the upper engaging projection 12 are attached to the side end face of the water-stopping body 1. However, as an alternative example, the lower engaging projection 11 of the lower engaging projection 11 and the upper engaging projection 12 can be attached to one side (upstream or downstream) of the water-stopping body 1, and its protruding end can be made to protrude in the width direction. 【0075】 Furthermore, in the above embodiment, the lower engaging recess 41 and the upper engaging recess 51 are formed in the block-shaped lower engaging member 40 and the lower engaging recess 41 attached to the support column 2. However, in another example, each support column 2 can be constructed in a solid shape, and the lower engaging recess 41 and the upper engaging recess 51 can be directly machined into the support column 2. 【0076】 Furthermore, in the above embodiment, two sets of the first handle 21, the second handle 22, and the third handle 23 are provided to correspond to the left and right halves of each water-stopping body 1, respectively. However, other examples include providing only one set of these handles on the central side of the water-stopping body 1, or providing three or more sets of these handles in the width direction. 【0077】 Furthermore, in the above embodiment, the first handle 21 is provided on the end side in the width direction of the water-stopping body 1, and the second handle 22 and third handle 23 are provided on the central side in the width direction of the water-stopping body 1. However, as an alternative example, the second handle 22 and third handle 23 are provided on the end side in the width direction of the water-stopping body 1, and the third handle 23 is provided on the central side in the width direction of the water-stopping body 1. 【0078】 Furthermore, according to the above embodiment, the first handle 21, the second handle 22, and the third handle 23 are each configured in a U-shape in side view, having a grip portion 20a, a hand support portion 20b, and a lower fastening portion 20c. However, as an alternative example of these handles, it is also possible to omit the lower fastening portion 20c and form them in an inverted L-shape in side view, having only a grip portion 20a and a hand support portion 20b. 【0079】 Furthermore, in the above embodiment, as a particularly preferred example, a plurality of handles such as a first handle 21, a second handle 22, and a third handle 23 are provided on the upstream side of the water-stopping body 1, but it is also possible to provide the plurality of handles on the downstream side of the water-stopping body 1. In other words, as in the above embodiment, in a configuration where a handle is provided on the upstream side of the water-stopping body 1 and no attachments such as handles are provided on the downstream side, for example, if the upstream handle penetrates the water-stopping body 1 and water seeps into the interior of the water-stopping body 1 through the gap in the penetration portion, the possibility of this water seeping into the indoor side (downstream side) can be reduced. On the other hand, if a handle is added to the downstream side of the water-stopping body 1, the water-stopping body 1 can be grasped from the downstream side as well, which is preferable from the viewpoint of improving transportability. 【0080】 Furthermore, in the above embodiment, the first to third handles 21, 22, 23, etc., are provided vertically. However, as an example other than the illustrated example, it is also possible to provide horizontal handles in addition to these (i.e., the grip portion 20a is a horizontal handle), or to replace some of the first to third handles 21, 22, 23 with horizontal handles. Such a configuration including horizontal handles provides particularly good workability when lifting the water-stopping body 1. 【0081】 Furthermore, in the above embodiment, the first auxiliary watertight material 33 and the second auxiliary watertight material 34 are sandwiched between the lower end of the vertical watertight material 31 of the upper watertight body 1 and the upper end of the vertical watertight material 31 of the lower watertight body 1. However, in other examples, it is also possible to sandwich only one of the first auxiliary watertight material 33 and the second auxiliary watertight material 34 between the lower end and the upper end. 【0082】 Furthermore, in the above embodiment, as a particularly preferred example, the first auxiliary watertight material 33 and the second auxiliary watertight material 34 are arranged to straddle the main plate 10 and the end of the vertical watertight material 31, respectively. However, as another example, it is also possible to arrange the auxiliary watertight material so that it is in contact only with the end of the vertical watertight material 31. 【0083】 Furthermore, according to the above embodiment, as an example of good watertightness, the first auxiliary watertight material 33 is formed from a material softer than the longitudinal watertight material 31. However, as an alternative example, it is also possible to make the hardness of the first auxiliary watertight material 33 and the longitudinal watertight material 31 the same. 【0084】 Furthermore, in the above embodiment, the vertically adjacent water-stopping bodies 1,1 can be replaced with the vertically adjacent water-stopping bodies 4,5 in Figure 15. 【0085】 The upper watertight body 4 comprises a main plate 10' and a lateral watertight material 32' that extends horizontally at the lower end of the main plate 10'. 【0086】 The main plate 10' integrally has a substantially V-shaped protruding portion 10a' at its lower end, which is continuous in the width direction. This main plate 10' is positioned biased to one side in the thickness direction of the main plate 10' (the upstream side in the illustrated example). 【0087】 The lateral watertight material 32' is made of an elastic material and is installed downstream of the protruding curved portion 10a' at the lower end of the main plate 10'. This lateral watertight material 32' has a cross-sectional shape (see Figure 15) that extends from the pressure-bearing contact surface 10c" of the lower main plate 10" across the concave curved portion 10b" and is continuous in the lateral direction. 【0088】 In other words, this lateral watertight material 32' has a substantially horizontal flat portion 32a' that contacts the pressure-bearing contact surface 10c'' and an inclined clamped portion 32b' that is sandwiched between the protruding curved portion 10a'' and the concave curved portion 10b''. The lateral watertight material 32' may be formed by integrally molding these flat portions 32a' and the clamped portion 32b', or it may be formed by joining separate flat portions 32a' and the clamped portion 32b'. 【0089】 In one example shown in Figure 15, the clamped portion 32b' is partially sandwiched between the protruding curved portion 10a' and the concave curved portion 10b'' near the downstream end in the thickness direction of the water-stopping body. However, another example of the clamped portion 32b' is that it may be sandwiched between the protruding curved portion 10a' and the concave curved portion 10b'' in a roughly V-shape in longitudinal cross-section over almost the entire thickness direction of the water-stopping body. 【0090】 The lower watertight body 5 comprises a main plate 10" and a lateral watertight material 32" that extends horizontally across the lower end of the main plate 10". 【0091】 The main plate 10" has a flat pressure-contact surface 10c" on the downstream side of its upper end that is pressed against the lateral watertight material 32', and upstream of this pressure-contact surface 10c", it has a concave curved portion 10b" that fits into the protruding curved portion 10a'. 【0092】 The lateral watertight material 32" is formed in a long shape from an elastic material such as rubber or elastomer resin and is attached horizontally to the lower end of the main body plate 10". This lateral watertight material 32" is pressed against a fixed surface on the lower side (for example, the floor). 【0093】 In the watertight bodies 4 and 5 shown in Figure 15, it is possible to provide a vertical watertight material 31, a first handle 21, a second handle 22, a third handle 23, a latch device 13, a first auxiliary watertight material 33, and a second auxiliary watertight material 34, in the same manner as in the watertight body 1. 【0094】 Therefore, with the water-stopping device using the water-stopping bodies 4 and 5 shown in Figure 15, the process of overlapping the upper water-stopping body 4 onto the lower water-stopping body 5 can be carried out smoothly, as shown in Figures 15(a) and (b), and the watertightness is also good. To explain in detail, this process involves tilting the upper end of the upper water-stopping body 4 upstream, fitting the protruding curved portion 10a' at the lower end of the water-stopping body 4 into the concave curved portion 10b'' at the upper end of the lower water-stopping body 5, and then raising the upper water-stopping body 4 to an upright position. 【0095】 In the above embodiment, the water-stopping device is configured such that the water-stopping bodies 1, 2, 3, or 4 are supported by the support columns 2 on both sides. However, as another example of this water-stopping device, it is also possible to configure a water-stopping panel shutter in which the water-stopping bodies 1, 2, 3, or 4 are sequentially housed upwards. 【0096】 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. 【0097】 <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, a lower engaging projection projecting laterally from the lower side of the main plate, and upper engaging projections projecting laterally to the left and right, respectively, above the lower engaging projection of the main plate, and each of the left and right support columns comprises a lower engaging recess into which the lower engaging projection is inserted from the upstream side in the direction of flow and engages internally, and an upper engaging recess into which the upper engaging projection is inserted from the upstream side and engages internally (see Figure 3). (2) Each of the left and right support columns has a receiving surface that receives the water-stopping body from the downstream side, located downstream in the flow direction from the lower engaging recess and the upper engaging recess, and 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 compressed when the lower engaging projection and the upper engaging projection are engaged with the lower engaging recess and the upper engaging recess, respectively, as described in (1) (see Figures 2 and 14, etc.). (3) A water-stopping device according to (2) (see Figures 5, 8 and 14, etc.) is characterized in that a lateral watertight material made of an elastic material is provided between the main body plate and the lower immovable surface, and the lateral watertight material is compressed when the lower engaging projection and the upper engaging projection are engaged with the lower engaging recess and the upper engaging recess, respectively. (4) Each of the left and right support columns has a receiving surface that receives the main body plate from the downstream side, located downstream in the flow direction from the lower engaging recess and the upper engaging recess, a vertical watertight material made of an elastic material is provided between the main body plate and the receiving surface, and a horizontal watertight material made of an elastic material is provided between the main body plate and the lower immovable surface, and the vertical watertight material and the horizontal watertight material are compressed when the lower engaging projection and the upper engaging projection are engaged with the lower engaging recess and the upper engaging recess, respectively, as described in (1) (see Figures 2, 5, 8 and 14, etc.). (5) The water-stopping device according to (4) (see Figures 11 to 14, etc.) is characterized in that the lower portion of the lower engagement recess is provided with a first inclined bottom surface that guides the lower engagement projection diagonally downward toward the downstream side, and as the lower engagement projection is guided by the first inclined bottom surface and moves toward the downstream side, the vertical watertight material and the horizontal watertight material are compressed. (6) The water-stopping device according to (5) (see Figure 11), characterized in that in the lower portion of the lower engagement recess, a concave curved surface portion is provided downstream of the first inclined bottom surface portion in the flow direction, which partially overlaps the outer circumferential surface of the lower engagement projection portion. (7) The water-stopping device according to (6), characterized in that the first inclined bottom surface extends further downstream and diagonally downward than the concave curved surface and connects to a substantially horizontal bottom surface. (8) The water-stopping device according to (4) (see Figures 11 and 14, etc.) is characterized in that the upper portion of the upper engaging recess is provided with an inclined top surface that guides the upper engaging projection diagonally downward toward the downstream side, and the vertical watertight material and the horizontal watertight material are compressed as the upper engaging projection moves toward the downstream side along this inclined top surface. (9) In the upper portion of the upper engaging recess, a locking top surface is provided downstream of the inclined top surface in the flow direction from the inclined top surface, such that it contacts the upper end of the upper engaging projection when it moves downstream of the inclined top surface, and the compression state of the lateral watertight material is maintained by the upper engaging projection contacting the locking top surface, as described in (8) (see Figures 11 and 14, etc.). (10) The water-stopping device according to (9) (see Figure 11) is characterized in that a bottom projection is provided at the bottom of the upper engagement recess, on the upstream side in the flow direction from the upper engagement projection that is in contact with the locking top surface, and protruding above the lower end of the upper engagement projection. (11) The upper engagement Concave The water-stopping device according to (9) or (10) (see Figure 12) is characterized in that a space is secured within the part below the locking top surface, allowing the upper engaging projection to move downward. (12) The water-stopping device according to any one of (1) to (11) (see Figures 6 to 9), characterized in that the lower engaging projection and the upper engaging projection each have rolling members that can roll within the lower engaging recess and the upper engaging recess, respectively. (13) A water-stopping device according to any one of (1) to (12) (see Figure 11), characterized in that the vertical dimension of the concave portion of the lower engaging recess is greater than the vertical dimension of the concave portion of the upper engaging recess. (14) A method for installing a water-stopping device according to any one of (1) to (13), characterized in that the lower engaging projection is fitted into the lower engaging recess, and then the upper engaging projection is fitted into the upper engaging recess (see Figures 13 to 14). 【0098】 Furthermore, the above embodiment also discloses an invention that requires only the following constituent elements. In other words, one aspect of this invention is a water-stopping device comprising plate-shaped water-stopping bodies stacked vertically so as to intersect the direction of water flow, and left and right support columns that support these water-stopping bodies on both sides, wherein the upper water-stopping body of the vertically adjacent water-stopping bodies is provided with a protruding curved portion that projects downward on one side in the thickness direction and is continuous in the width direction, and the lower water-stopping body is provided with a concave curved portion that fits into the protruding curved portion across the width direction (see Figure 15). According to this invention, the process of overlapping the upper water-stopping body with the lower water-stopping body can be carried out smoothly. [Explanation of symbols] 【0099】 A: Water shutoff device 1,4,5: Water-stopping bodies 2: Prop 3: Base 10: Main panel 11: Lower engagement protrusion 12: Upper engagement protrusion 21: First handle 22: The second handle 23: The third handle 31: Vertical watertight material 32: Lateral watertight material 33: First auxiliary watertight material 34: Second auxiliary watertight material 40: Lower engagement member 41: Lower engagement recess 41a: Projection 41b: First inclined bottom part 41c: Concave curved part 41d: Bottom part 50: Upper engaging member 51: Upper engagement recess 51a: Slanted top section 51b: Locking top surface part 51c: Bottom protrusion 51d: Bottom part

Claims

[Claim 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 water-stopping body comprises a main plate, a lower engaging projection that protrudes laterally from the lower side of the main plate, and an upper engaging projection that protrudes laterally from above the lower engaging projection of the main plate. Each of the left and right support columns is provided with a lower engaging recess into which the lower engaging projection is inserted from the upstream side in the flow direction and engages internally, and an upper engaging recess into which the upper engaging projection is inserted from the upstream side and engages internally. A water-stopping device characterized in that the lower engaging recess and the upper engaging recess are formed such that the upper engaging recess is inserted into the upper engaging recess after the lower engaging projection is inserted into the lower engaging recess and the entire water-stopping body is lowered. [Claim 2] The lower engaging recess is formed to guide the lower engaging projection diagonally downward on the downstream side, The water-stopping device according to claim 1, characterized in that the upper engaging recess is formed such that the lower engaging projection is inserted into the lower engaging recess and guided diagonally downward downstream before the upper engaging projection is guided inward. [Claim 3] Each of the left and right support columns has a receiving surface that receives the main body plate from the downstream side, located downstream in the flow direction of the lower engaging recess and the upper engaging recess, A vertical watertight material made of an elastic material is provided between the main body plate and the receiving surface. A lateral watertight material made of an elastic material is provided between the main body plate and the lower immovable surface. The water-stopping device according to claim 1, characterized in that when the lower engaging projection and the upper engaging projection are engaged with the lower engaging recess and the upper engaging recess, respectively, the vertical watertight material and the horizontal watertight material are compressed. [Claim 4] The water-stopping device according to claim 3, characterized in that the lower portion of the lower engaging recess is provided with a first inclined bottom surface that guides the lower engaging projection diagonally downward toward the downstream side, and the lower engaging projection is guided by the first inclined bottom surface and moves toward the downstream side so that the vertical watertight material and the horizontal watertight material are compressed. [Claim 5] In the lower portion of the lower engagement recess, a concave curved surface portion is provided downstream of the first inclined bottom surface portion in the flow direction, which partially overlaps the outer circumferential surface of the lower engagement projection. The water-stopping device according to claim 4, characterized in that the concave curved portion is formed in the shape of a concave curved surface that is recessed diagonally downward on the upstream side. [Claim 6] The water-stopping device according to claim 5, characterized in that the first inclined bottom surface is continuous with the concave curved surface further downstream and diagonally downward and connected to a substantially horizontal bottom surface. [Claim 7] The water-stopping device according to claim 3, characterized in that the upper portion of the upper engaging recess is provided with an inclined top surface that guides the upper engaging projection diagonally downward toward the downstream side, and the vertical watertight material and the horizontal watertight material are compressed as the upper engaging projection moves toward the downstream side along this inclined top surface. [Claim 8] In the upper portion of the upper engaging recess, a locking top surface is provided downstream of the inclined top surface in the flow direction, such that it contacts the upper end of the upper engaging projection when it moves downstream of the inclined top surface. The water-stopping device according to claim 7, characterized in that the upper engaging projection contacts the locking top surface so that the compressed state of the lateral watertight material is maintained. [Claim 9] The water-stopping device according to claim 8, characterized in that a bottom projection is provided at the bottom of the upper engaging recess, on the upstream side in the flow direction from the upper engaging projection that is in contact with the locking top surface, and protruding above the lower end of the upper engaging projection. [Claim 10] The water-stopping device according to claim 8, characterized in that a space is provided within the upper engaging recess below the locking top surface portion, allowing the upper engaging projection to move downward. [Claim 11] The water-stopping device according to claim 1, characterized in that the lower engaging projection and the upper engaging projection each include a rolling member that can roll within the lower engaging recess and the upper engaging recess, respectively. [Claim 12] The water-stopping device according to claim 1, characterized in that the vertical dimension of the concave portion of the lower engaging recess is greater than the vertical dimension of the concave portion of the upper engaging recess. [Claim 13] The method for installing a water-stopping device according to any one of claims 1 to 12, characterized in that the lower engaging projection is fitted into the lower engaging recess, and then the upper engaging projection is fitted into the upper engaging recess.

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