JP4908937B2 - Rainwater storage and penetration tank - Google Patents

Description

The present invention relates to a rain water storage impregnation vessel that is used for such infiltrating rainwater storage or in the ground.

  Some rainwater storage and penetration tanks have a structure in which a vacuum hose for removing sand and mud accumulated in the lower part can be inserted (see, for example, Patent Document 1). In such a structure, the substantially plate-like connecting member in which the opening is formed and the support column are alternately connected in the vertical direction, and the support column is a cylindrical body and is supported by the stopper of the connecting member. Thus, a communication path is formed.

In this conventional rainwater storage and penetration tank, even if a vacuum hose is inserted from the opening connected to the communication path, it can be easily caught by the stopper, and even if a vacuum hose is inserted from the opening not connected to the communication path, the connecting member is in the middle of insertion. Since it is easy to get caught around the opening, it was difficult to insert it to the bottom.
JP 2004-19206 A

The present invention is, in view of the above circumstances, and an object thereof is to provide a rain water storage impregnation vessel that can be easily inserted a vacuum hose to the bottom.

The rainwater storage and infiltration tank according to the first aspect of the present invention includes a cylindrical side wall portion having a distal end portion as an opening, a top plate portion that connects base end portions of the side wall portions, and the top plate portion. A groove plate part in which a groove part into which a distal end part of the side wall part can be fitted is formed, and a part of the side wall part, which is inwardly curved and is a curved portion having a guide surface for guiding the front end portion, the component for rain water storage impregnation vessel that have a, stacked vertically with the plurality arranged next to each other, arranged in the lower part The tip of the side wall portion of the component member disposed in the upper stage is fitted into the groove portion of the component member to be disposed, and is disposed in the upper stage above the curved portion of the component member disposed in the lower stage. The curved portion of the component member is disposed .

  The rainwater storage and penetration tank refers to a tank that at least stores rainwater or penetrates into the ground. Specifically, a storage tank that stores rainwater, and a penetration tank that gradually permeates the ground after rainwater is temporarily stored. And all the storage permeation tanks having both the function of the storage tank and the function of the permeation tank (the same applies in the following description (including other claims)).

According to the rainwater storage and infiltration tank of the present invention described in claim 1 , the horizontal load is obtained by inserting the front end portion of the side wall portion of the component member disposed in the upper stage into the groove portion of the component member disposed in the lower stage. On the other hand, since the groove portion on the lower stage side and the front end portion of the side wall portion on the upper stage side are supported while being in surface contact, the positional deviation of the bending portion can be suppressed. In addition, it is possible to easily insert the vacuum hose to the lower part along the guide surface of the curved part that is stacked in the vertical direction and the curved parts of the constituent members are continuous in the vertical direction and guided from the proximal end side to the distal end side. it can.

According to a second aspect of the present invention, there is provided the rainwater storage and penetration tank according to the first aspect, wherein the curved portion is directed from the base end side toward the top plate portion side toward the base end side. Inclined to

According to the rainwater storage and penetration tank of the present invention described in claim 2, the curved portion of the constituent member arranged in the upper stage is arranged above the curved portion of the constituent member arranged in the lower stage, and along the curved section. When the vacuum hose is inserted, the vacuum hose can be easily inserted to the lower part because the vacuum hose is not caught on the end of the top plate part or the upper part of the curved part of the constituent member arranged in the lower stage.

According to a third aspect of the present invention, there is provided the rainwater storage and permeation tank according to the first or second aspect , wherein the curved members are opposed to each other. It is characterized by being arranged.

According to the rainwater storage and penetration tank of the present invention described in claim 3 , since the curved portions are arranged to face each other, a large space for inserting the vacuum hose can be secured. For this reason, it becomes possible to insert a vacuum hose to a lower part easily.

As described above, according to the rain water storage impregnation vessel of the present invention has an excellent effect that it is possible to easily insert the vacuum hose to the bottom.

An embodiment of the rain water storage impregnation vessel that put the present invention will be described with reference to the drawings.

(Configuration of rainwater storage and penetration tank and rainwater storage and penetration tank)
As shown in FIG. 1, the rainwater storage and penetration tank 10 is embedded in the underground G, and is placed on a rubber impermeable sheet 14 via a protective mat 12 in the installed state. The lower portion of the side surface is covered with the water shielding sheet 14, and the upper portion and the upper surface of the side surface are covered with the water permeable sheet 15. In addition, an introduction pipe 16 and a drain pipe 18 are connected to the side surface.

  The underground G rainwater storage and penetration tank 10 stores rainwater collected by the introduction pipe 16 at the lower part, while it is temporarily stored at the upper part and then gradually infiltrated into the underground G and discharged. , Preventing sudden inflow of rainwater into the river. Further, when the rainwater storage and penetration tank 10 is almost full, the water is drained from the upper part through the drain pipe 18.

  The rainwater storage and penetration tank 10 is composed of a component 20 for rainwater storage and penetration tank (hereinafter simply referred to as “component”) 20 shown in FIG. 2 and an auxiliary member (hereinafter referred to as “rainwater storage and penetration tank” shown in FIG. 5). As shown in FIG. 11, a plurality of component members 20 and auxiliary members 40 are arranged adjacent to each other and connected while being stacked in the vertical direction. It is formed.

  2 is a standard size (full size) constituting most of the rainwater storage and penetration tank 10, and the auxiliary member 40 shown in FIG. 5 is a side portion of the rainwater storage and penetration tank 10. It is a quota size that is partially applied to

  As the material of the constituent member 20 and the auxiliary member 40 shown in FIG. 2 and FIG. Specifically, polyolefin resins such as polypropylene (PP) and polyethylene (PE) (particularly high density polyethylene (HDPE)) are preferable from the viewpoint of chemical stability, mechanical strength, and cost. Here, the melt flow rate (MFR) (JIS K7210) of the resin is preferably 10 (g / 10 minutes) to 15 (g / 10 minutes) in consideration of workability and mechanical strength. Moreover, you may improve light resistance by adding 1-3% of carbon black as a filler to these. In addition, since an installation place is not a place where it becomes high temperature, it is not necessary to add an antioxidant.

  The component member 20 and the auxiliary member 40 are integrally formed in a hollow box shape by an injection molding method. The thicknesses of the component member 20 and the auxiliary member 40 are uniform, and are preferably set to 2 mm to 3 mm in consideration of the weight per product, mechanical strength, and the like.

  As shown in FIG. 2 and FIG. 3, the standard-sized component member 20 has a frame-like shape, that is, a substantially square cylindrical side wall portion 22, 24, and base end portions 22 A, 24 A of the side wall portions 22, 24. The top plate portion 26 for connecting the two. The side walls 22 and 24 are connected to the respective short edges 28 of the top plate 26 (the outer peripheral edge (including the curved peripheral edge 28A) constituting a direction substantially perpendicular to the longitudinal direction in plan view) and are opposed to each other. The side wall portion 22 on the side of the edge portion 28 and the side wall portion 24 on the side of the long edge portion 29 that are connected to the respective long edge portions 29 of the top plate portion 26 (outer peripheral edge portions constituting the longitudinal direction in plan view) and face each other. Prepare.

  As shown in FIG. 3 which is a plan view, the side wall portion 22 on the short edge portion 28 side and the side wall portion 24 on the long edge portion 29 side are substantially perpendicular to each other in plan view, and are viewed from below. As shown in FIG. 4, which is a perspective view, the side wall tip portions 22 </ b> B and 24 </ b> B as the tip portions of the side wall portions 22 and 24 are the opening portions 25. The shape of the opening 25 is a line-symmetric shape. In the present embodiment, the dimension (linear distance) in the direction perpendicular to the longitudinal direction is 500 mm, the dimension in the longitudinal direction is 1000 mm, that is, the aspect ratio is 1: 2. . In addition, the height dimension of the structural member 20 shown by FIG. 2 shall be 500 mm. The work efficiency at the time of construction can be made favorable by making the structural member 20 into the shape of the above sizes.

  Further, as shown in FIG. 2, the side wall tip portions 22B and 24B are curved and formed outwardly in a J shape for reinforcement or the like. However, the side wall tip portion 22B of the bending portion 22C, which will be described in detail later, is configured such that the tip portion bent back and bent is brought close to the bending portion 22C in consideration of the insertability of the vacuum hose 50 (see FIG. 7). In addition, at the time of installation of the rainwater storage penetration tank 10 (refer FIG. 1), the structural member 20 is arrange | positioned so that the side wall front-end | tip part 22B, 24B side may become a lower side.

  The side wall portions 22 and 24 are inclined so that the dimensions are slightly reduced toward the top plate portion 26, and a plurality of ribs 23 extending in the vertical direction are provided on the lower portions of the outer peripheral surfaces of the side wall portions 22 and 24. In the embodiment, two are formed on the side wall portion 22 on the short edge portion 28 side, and six are formed on the side wall portion 24 on the long edge portion 29 side.

  As shown in FIGS. 2 and 3, the top plate portion 26 that connects the base end portions 22 </ b> A and 24 </ b> A of the side wall portions 22 and 24 has a line-symmetric shape in plan view. The aspect ratio is 1: 2.

  The top plate portion 26 includes a plurality (eight in this embodiment) of top portions 30A that form a horizontal upper surface when the component member 20 is disposed, and these top portions 30A are applied to the rainwater storage and penetration tank 10 (see FIG. 1). Sometimes doubles as a scaffold for work. Each top portion 30A is formed with a plurality of (four in this embodiment) through-holes 38 as rainwater circulation holes, and serves as a circulation portion for circulating rainwater when the component member 20 is installed.

  A first groove plate portion 26A and a second groove plate portion 26B are provided as part of the top plate portion 26 directed upward when the component member 20 is installed. As shown in FIG. 3, the first groove portion 31 formed in the first groove plate portion 26A is substantially parallel to the long edge portion 29 by equally dividing the short edge portion 28 of the top plate portion 26 by the center line 31L. A total of three second groove portions 32 formed in the second groove plate portion 26B are formed by dividing the long edge portion 29 of the top plate portion 26 into four equal parts by the respective center lines 32L. 28 extends in a direction substantially parallel to 28. That is, the center line 31L of the first groove portion 31 and the center lines 32L of the second groove portion 32 extend in directions orthogonal to each other and intersect each other.

  These first and second groove portions 31 and 32 have such a width that two side wall tip portions 22B and 24B shown in FIG. 4 can be inserted, and for connecting the component member 20 arranged adjacent to the upper stage. It is said. As shown in FIG. 2, the groove bottom surfaces 30 </ b> B of the first and second groove portions 31 and 32 are partitioned by the top portion 30 </ b> A and a step, and form a horizontal plane that faces upward when the component member 20 is disposed.

  As shown in FIGS. 2 and 3, the side wall portion 24 extends from the connecting portion 34 between the end portion in the length direction of the second groove portion 32 (the length direction of the second groove portion 32 is indicated by the arrow X direction) and the side wall portion 24. A column portion 36 is provided over the side wall tip 24B. The column part 36 constitutes a part of the side wall part 24, has a concave shape recessed inward of the side wall part 24, and is formed on both sides with the central part of the coupling part 34 interposed therebetween. As shown in FIG. 4, the column portion 36 is connected by a bottom plate portion 37 on the side wall tip portion 24 </ b> B side.

  As shown in FIGS. 2 and 3, the outer surface of the top plate portion 26 (the surface directed upward when the component member 20 is installed) and the second groove portion closer to the side wall portion 24. A notch 35 is formed at the intersection of 32 and the first groove 31 (except for the intersection at the center of the top plate 26) in a substantially right angle in plan view. Thereby, the notch part 35 becomes a regular pattern in planar view.

  As shown in FIG. 3, the first and second groove portions 31 and 32, the cutout portion 35, and the column portion 36 connect the bisected positions that bisect both the short edge portions 28 in a plan view. A line (in this embodiment, a line overlapping with the center line 31L) is symmetrical with respect to a line, and a line connecting two equally divided positions that bisect both long edges 29 (in this embodiment, three lines). The center line 32L of the center line 32L overlaps the center line 32L).

  Note that plate-like reinforcing ribs 39 as shown in FIG. 4 are provided vertically and horizontally on the inner surface of the top plate portion 26 (the surface directed downward when the component member 20 is installed). As shown in FIG. 2, in the side walls 22 and 24, windows 22 </ b> W and 24 </ b> W serving as inspection holes are formed through portions where there is little influence on the strength against the vertical load. From these windows 22W, 24W, it is possible to visually check the state (presence or absence of clogging due to earth and sand) in the rainwater storage and penetration tank 10 (see FIG. 1).

  A curved portion 22 </ b> C is formed below the curved peripheral edge portion 28 </ b> A of the top plate portion 26 to constitute a part of the side wall portion 22. The curved portion 22C includes a guide surface 122 that is curved in an arc shape (semicircular shape) inwardly (inward of the cylinder) of the side wall portion 22 and guides from the base end portion 22A side to the side wall front end portion 22B side. It is used for guiding the vacuum hose 50 (see FIG. 7). The guide surface 122 may be subjected to a surface treatment that reduces frictional resistance. In the present embodiment, the number of the curved portions 22C formed in each component member 20 is two, so that the area of the portion that becomes a scaffold during construction is sufficiently ensured.

  The curved portion 22C is inclined in a direction (inward) from the base end portion 22A side to the top plate portion 26 side as it goes toward the base end portion 22A side. Therefore, as shown in FIG. 3, the diameter of the semicircle at the upper part of the bending part 22C is larger than the diameter of the semicircle at the lower part of the bending part 22C. Further, the base portion 22A of the curved portion 22C and the top plate portion 26 are rounded in an R shape.

  Here, as shown in FIG. 6 and FIG. 7 (schematic diagram), in a state where the structural members 20 are arranged adjacent to each other, the curved portions 22C face each other, that is, the guide surfaces 122 They are arranged to face each other. As a result, the opposing curved portions 22C form a substantially columnar space (strictly, tapering down toward the bottom) for insertion of the vacuum hose 50 (see FIG. 7).

  The quarter-sized auxiliary member 40 shown in FIG. 5 has the same height (the vertical dimension in FIG. 5) as the standard-sized component 20 shown in FIG. 2, and the vertical dimension and the horizontal dimension are both standard sizes. The size of the structural member 20 is about ½. There is no groove corresponding to the first groove 31, and the groove corresponding to the second groove 32 has only one auxiliary groove 42. Since other configurations are substantially the same as those of the standard-sized component member 20, the same components are denoted by the same reference numerals and description thereof is omitted.

(Procedure and action of rainwater storage and penetration tank)
Next, a plurality of constituent members 20 and auxiliary members 40 (see FIGS. 2 and 5) are juxtaposed adjacent to each other and stacked in the vertical direction to form the rainwater storage and penetration tank 10 (see FIG. 1). The procedure and the operation of the above embodiment will be described with reference to FIGS. 9 to 11, only the component member 20 and the auxiliary member 40 (see FIG. 2 and FIG. 5) arranged near the corner of the installation place of the rainwater storage and penetration tank 10 (see FIG. 1) are shown. Is omitted.

  First, as shown in FIG. 9, a plurality of constituent members 20 are arranged side by side on the protective mat 12 so that the constituent members 20 face in the same direction (the longitudinal directions of the constituent members 20 are the same). These constituent members 20 are the first stage (bottom stage) of the constituent members 20 stacked to form the rainwater storage and penetration tank 10 (see FIG. 1). Here, the curved portions 22 </ b> C of the constituent members 20 arranged adjacent to each other are arranged to face each other.

  Next, as shown in FIG. 10, the component member 20 that is the second step (upper step) is stacked by changing the orientation in the longitudinal direction by 90 ° with respect to the component member 20 that is arranged in the first step (lowermost step). . As shown in FIG. 6, in the present embodiment, the structural member 20 arranged in the second stage (upper stage) straddles three or six structural members 20 arranged in the first stage (lowermost stage). So that they are stacked.

  At this time, the first and second groove portions 31 and 32 of the component member 20 arranged in the first stage (lowermost stage) shown in FIG. 9 are arranged in the second stage (upper stage) shown in FIG. Two side wall tips 22B and 24B (see FIG. 2) of adjacent component members 20 are inserted. Further, as shown in FIG. 8, the second stage (upper stage) is provided inside the notch 35 (see FIGS. 2 and 9) of the second groove 32 in the component member 20 arranged in the first stage (lowermost stage). The lower part of the column part 36 and the bottom plate part 37 of the constituent member 20 are arranged. Further, as shown in FIG. 6 and FIG. 7, the bending of the constituent member 20 arranged in the second stage (upper stage) above the bending portion 22 </ b> C of the constituent member 20 arranged in the first stage (lowermost stage). The part 22C is arranged.

  When the standard-sized component members 20 are stacked as in the present embodiment, the second stage (upper stage) shown in FIG. 10 has the first stage (lowermost stage) of the rainwater storage and penetration tank 10 (see FIG. 1). Since an elongated unstacked portion is generated above the component member 20 constituting the side portion, a quarter-size auxiliary member 40 is disposed in this portion as shown in FIG.

  Next, with respect to the standard size component 20 arranged at the second level (lower level) shown in FIG. 11, the standard size component at the third level (upper level) is changed by 90 ° in the longitudinal direction. 20 are stacked (not shown). The arrangement direction of the constituent member 20 that is the third stage is the same as the arrangement direction of the constituent member 20 that is arranged in the first stage, and is arranged in the third stage with the constituent member 20 that is arranged in the first stage. The component member 20 has the same arrangement in plan view.

  Here, the structural member 20 which comprises the side part of the rainwater storage penetration tank 10 (refer FIG. 1) by the 3rd stage (upper stage) is the structural member 20 (FIG. 6) of the standard size arrange | positioned at the 2nd stage (lower stage). And a quarter-sized auxiliary member 40.

  Similarly, the standard size component members 20 arranged in the odd-numbered stages and the standard size component members 20 arranged in the even-numbered stages are alternately stacked by changing the direction of the longitudinal direction by 90 °. The rainwater storage and penetration tank 10 (refer FIG. 1) is formed by arrange | positioning the auxiliary member 40 of a partial quarter size.

  In the rainwater storage and penetration tank 10 (see FIG. 1) formed by assembling the plurality of component members 20 and the auxiliary members 40 in this way, as shown in the schematic diagram of FIG. Since the plurality of portions 22C are combined into a substantially cylindrical shape extending in the vertical direction, the vacuum hose 50 can be easily inserted to the lower portion along the guide surface 122.

  In particular, in the present embodiment, as shown in FIG. 2, the bending portion 22C is inclined in the direction from the base end portion 22A side to the top plate portion 26 side as it goes toward the base end portion 22A side. When the vacuum hose 50 is inserted along the curved portion 22C shown in FIG. 7, the vacuum hose 50 is not caught on the end of the top plate portion 26 of the constituent member 20 arranged in the lower stage or on the upper portion of the curved portion 22C. The vacuum hose 50 can be easily inserted to the lower part.

  Moreover, it becomes possible to ensure a large space for inserting the vacuum hose 50 by arranging the curved portions 22C to face each other.

  Further, in a state where the component member 20 and the auxiliary member 40 are stacked, the bending portion 22C supports the load in the vicinity of the end portion in the length direction of the first groove portion 31, and the high stress acting portion can be effectively reinforced. At the same time, the breaking strength against the vertical load increases.

  Furthermore, the first and second groove portions 31 and 32, the auxiliary groove portion 42 and the side wall tip portions 22B and 24B shown in FIGS. Since the lower part of the pillar part 36 and the bottom plate part 37 are supported while being in surface contact with the notch part 35, the breaking strength against a horizontal load is increased and the displacement of the curved part 22C can be suppressed.

  Furthermore, as shown in FIG. 6, the constituent members 20 arranged in the upper stage are stacked so as to straddle the three or six constituent members arranged in the lower stage, so that the constituent members 20 are strongly bound to each other. Can be made. Thereby, since the bending part 22C is reliably hold | maintained in a predetermined position, the insertion ease of the vacuum hose 50 can be maintained.

(Modification of the embodiment, etc.)
In the above-described embodiment, the constituent members 20 arranged adjacent to each other are arranged such that the curved portions 22C face each other. For example, the curved portions are not placed opposite to each other, and the shape of the curved portions is not provided. It is good also as a structure which makes arc shape longer than a semi-cylinder, and lets a vacuum hose pass through the one curved part.

  Moreover, in said embodiment, although the side wall front-end | tip part 22B in the bending part 22C is set as the structure which made the front-end | tip part bent and curved approached the bending part 22C, the insertion property of the vacuum hose 50 (refer FIG. 7) is set. In consideration, the side wall tip portion 22B of the curved portion 22C may not be folded back.

  Moreover, in the said embodiment, although the rainwater storage penetration tank 10 is formed, the structural member 20 and the auxiliary member 40 are adjacently arranged in parallel and are connected while being stacked up and down. It is good also as a structure formed by connecting while adjoining mutually in the state which mutually left | separated a little, and being piled up and down and being connected.

  Furthermore, in the said embodiment, although the shape of planar view of the top-plate part 26 and the shape of the opening part 25 are made into the substantially rectangular of aspect ratio 1: 2, it is substantially rectangular of other aspect ratio, or a honeycomb Other line-symmetric polygons such as regular polygons including shapes (regular hexagons, regular octagons, etc.), etc. may be used, and each center line of a plurality of grooves provided in the top plate portion is one of the top plate portions. You may make it extend in the direction parallel to the edge | side and cross | intersect mutually.

  In addition, in the said embodiment, as FIG. 1 shows, the lower part of the rainwater storage penetration tank 10 is covered with the water-impervious sheet 14, the upper part is covered with the water-permeable sheet 15, and the storage function is achieved in the lower part. Although the case where the osmotic function is performed at the upper part has been described, the entire rainwater storage and penetration tank 10 is covered with a water shielding sheet 14 to form a storage tank, or the entire rainwater storage and penetration tank 10 is covered with a water permeable sheet 15 to form a penetration tank. May be.

It is a schematic sectional drawing which shows the state which embed | buried the rainwater storage penetration tank which concerns on embodiment of this invention in the ground. It is a perspective view which shows the structural member (standard size) for the rainwater storage penetration tank which concerns on embodiment of this invention. It is a top view which shows the structural member (standard size) for the rainwater storage penetration tank which concerns on embodiment of this invention. It is a perspective view showing the constituent member (standard size) for rainwater storage penetration tank concerning the embodiment of the present invention in the state seen from the lower side. It is a perspective view which shows the auxiliary member in embodiment of this invention. It is a top view which shows the state which piled up the structural member for rain water storage penetration tanks concerning embodiment of this invention. It is a schematic diagram which shows the state which accumulated the structural member for rainwater storage penetration tanks concerning embodiment of this invention. It is a perspective view which shows the lamination | stacking state of the structural member (standard size) for the rainwater storage penetration tank which concerns on embodiment of this invention. It is a perspective view which shows the state which arranged the structural member for rainwater storage penetration tanks concerning embodiment of this invention in parallel on the protection mat. It is a perspective view which shows the state which piled up the structural member (standard size) for rainwater storage penetration tanks concerning embodiment of this invention on the structural member arrange | positioned in the 1st step. It is a perspective view which shows the state which accumulated the auxiliary member in embodiment of this invention on the structural member arrange | positioned at the 1st step | paragraph.

Explanation of symbols

10 rainwater storage and penetration tank 20 component (component for rainwater storage and penetration tank)
22 Side wall part 22A Base end part 22B Side wall tip part (tip part)
22C Bending part 24 Side wall part 24A Base end part 24B Side wall tip part (tip part)
26 Top plate portion 26A First groove plate portion (groove plate portion)
26B Second groove plate (groove plate)
31 1st groove part (groove part)
32 Second groove (groove)
122 Guide surface

Claims (3)

A cylindrical side wall with an opening at the tip,
A top plate connecting the base ends of the side walls;
A groove plate part that is a part of the top plate part and in which a groove part into which a tip part of the side wall part can be inserted is formed,
A curved portion that is a part of the side wall portion and includes a guide surface that curves inward and guides from the proximal end side to the distal end side;
The components for rain water storage impregnation vessel that have a, stacked vertically with the plurality arranged next to each other, in the groove of the components which are arranged in the lower stage are arranged in the upper The distal end of the side wall portion of the component member is fitted, and the curved portion of the component member disposed in the upper stage is disposed above the curved portion of the component member disposed in the lower stage. Rainwater storage and penetration tank . The rainwater storage and infiltration tank according to claim 1, wherein the curved portion is inclined in a direction from the base end side toward the top plate part side toward the base end side. The rainwater storage and infiltration tank according to claim 1 or 2, wherein the constituent members arranged next to each other are arranged such that the curved portions face each other.

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