JP2009013757A - Structural member for water storage tank - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structural member for a water storage tank allowing a worker to inspect the inside of a structural body constituted by arranging the structural members in parallel and stacking them, without entering the structural body. <P>SOLUTION: This structural member 11 for the water storage tank is provided with a base 12 and leg parts 13 erected on the base 12, and a plurality of structural members 11 are arranged in parallel and are stacked to construct the structural body. A traveling passage 30 for letting a traveling type carrier run on it is provided on a surface of the base 12 and is formed to let the traveling passage 30 pass between the leg parts 13 and mutually connect side fringes of at least one set of opposing bases. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a structural member for a water storage tank that constructs a side-by-side stacked structure that secures a storage space of a water storage tank by arranging the layers in the vertical direction while being juxtaposed in the horizontal direction.

In areas where the population is concentrated, the ground is covered with buildings, asphalt pavement, etc., and the penetration of rainwater and the like into the basement is hindered. Under such circumstances, water damage is likely to occur due to the occurrence of torrential rain, etc., but as one of the measures to prevent such water damage, the installation of a water storage tank is effective. The water storage tank is a facility that temporarily stores a large amount of rainwater or the like in the ground or allows the stored rainwater or the like to permeate into the soil by flowing rainwater or the like into the tank. The storage space of such a water storage tank is secured by a plurality of structural members (see, for example, Patent Document 1). The structural member of Patent Document 1 includes a square-shaped bottom wall and a box-shaped unit having four openings on the periphery of the bottom wall and having an opening on the upper side, and a lid for closing the opening. . And, by arranging a plurality of structural members juxtaposed in the horizontal direction on the bottom surface of the hole formed by mining the ground, the juxtaposed laminated structure is constructed to secure the storage space by stacking in the vertical direction It is configured.
JP 2004-263519 A

  By the way, when such a water storage tank is used for a long period of time, sediments such as soil flowing into the juxtaposed laminated structure together with rainwater are deposited on the structural member located at the lowest stage of the juxtaposed laminated structure. Therefore, it is necessary to periodically check the inside of the juxtaposed laminated structure. In the structural member of Patent Document 1, an inspection hole having a size that allows an operator to pass through is provided on the side wall of the box-shaped unit, and the operator enters the juxtaposed laminated structure through the inspection hole and between the structural members. It is configured so that the inside can be inspected by moving.

  However, since the inside of the juxtaposed laminated structure is a substantially sealed underground space, it can be said that it is difficult to sufficiently ventilate and is a very poor working environment. For this reason, it is the actual situation at the work site that it is desirable to avoid as long as possible workers entering the side-by-side laminated structure and performing long-term work such as internal inspection.

  The present invention has been made in view of such conventional circumstances, and provides a structural member for a water storage tank that allows an operator to easily check the inside thereof without entering the juxtaposed laminated structure. There is.

  In order to achieve the above object, the structural member for a water storage tank according to claim 1 is formed of a synthetic resin and includes a base and a plurality of legs standing on the surface of the base. A structural member for a water storage tank that constitutes a side-by-side stacked structure by securing a storage space of the water storage tank by stacking a plurality of them side by side, on the surface of the base, A traveling path for traveling the self-propelled traveling vehicle is provided, and the traveling path is formed so as to pass between the legs and connect at least a pair of side edges of a pair of opposing bases. It is characterized by that.

  According to the structural member for the water storage tank, since it is made of synthetic resin, it can be manufactured in a light weight, and the juxtaposed laminated structure constructed from the structural member has a juxtaposed direction of the structural member. And a path through which the self-propelled vehicle can travel is formed. Thereby, the inspection in a juxtaposed laminated structure can be performed by using a self-propelled traveling vehicle provided with a camera. Therefore, in the case of the juxtaposed laminated structure constructed from the structural members of the present invention, when performing inspection of the inside, the worker only has to operate the self-propelled traveling vehicle from the outside of the juxtaposed laminated structure. There is no need to go inside the structure. Therefore, according to the structural member of the present invention, the inside of the juxtaposed laminated structure can be easily checked in a short time.

  The structural member for a water storage tank according to claim 2 is the invention according to claim 1, wherein the central portion of the traveling path is formed by a plane continuous with respect to the traveling direction, It is a slope surface or a horizontal surface which inclines toward the running direction. According to the present invention, rattling of a self-propelled traveling vehicle traveling on a traveling path and catching of a cord extending from the self-propelled traveling vehicle are suppressed, so that the self-propelled traveling vehicle can travel more smoothly. it can.

  The structural member for the water storage tank according to claim 3 is the invention according to claim 1 or 2, wherein the side portion of the travel path is the leg from the center side to the side edge side of the travel path. An inclined surface that is inclined in the standing direction of the part is formed.

  According to this invention, when the self-propelled traveling vehicle traveling on the traveling path approaches the left side or the right side, the left or right wheel of the self-propelled traveling vehicle rides on the inclined surface, and the entire vehicle body is in the center of the traveling path. It will be in a state inclined toward the side. At this time, the self-propelled traveling vehicle is subjected to a force for returning to the center side of the traveling path by its own weight. Therefore, the straight traveling performance of the self-propelled traveling vehicle traveling on the traveling path can be improved. If there is no inclined surface on the side of the road, the entire side of the wheel of the self-propelled vehicle will come into sliding contact with the side of the leg, which may cause problems with running of the self-propelled vehicle. However, this configuration does not cause such a problem.

  The structural member for a water storage tank according to claim 4 is the invention according to claim 1, wherein the base is a load applied to the travel path on the back side of the portion where the travel path is located. Reinforcing ribs for supporting are provided. According to the present invention, it is possible to suppress deformation of the traveling path due to depression, inclination, or the like that may occur when the self-propelled traveling vehicle travels.

  The structural member for a water storage tank according to claim 5 is the invention according to any one of claims 1 to 4, wherein a sheet material is laid on the travel path. To do. According to the present invention, self-propelled traveling is suppressed by suppressing the occurrence of catching and rattling between the unevenness formed on the traveling road and the wheels of the self-propelled traveling vehicle, such as dents between juxtaposed structural members. The car can run more smoothly.

  According to the structural member for a water storage tank of the present invention, the inside of the worker can be easily inspected without entering the juxtaposed laminated structure.

  Hereinafter, an embodiment of a structural member for a water storage tank embodying the present invention will be described in detail with reference to FIGS. The structural member 11 of the present embodiment is a flat rectangular base 12 and leg portions 13 erected on the surface of the base 12 that are integrally formed of a synthetic resin material. The juxtaposed laminated structure 10 is constructed by laminating in the vertical direction while juxtaposing in the horizontal direction (see FIG. 5).

  As shown in FIGS. 1 (a) and 1 (b), the base 12 is formed by arranging square block bases 20 having the same shape in 2 × 2 in the vertical direction. The block base 20 includes a frame body 21 (see FIG. 3) having a square frame shape and a substantially U-shaped cross section when viewed from above, and vertical ribs 22 and horizontal ribs 23 provided in the frame body 21 so as to extend vertically and horizontally. ing. Two vertical ribs 22 and two horizontal ribs 23 are provided in the frame body 21 and divide the frame body 21 vertically and horizontally into nine regions.

  Legs 13 are erected in the surface direction in the regions located at the four corners among the partitioned regions in the frame body 21. The leg portion 13 is formed in a quadrangular truncated pyramid shape having a square cylindrical shape that opens to the back surface side and that gradually decreases in diameter from the proximal end toward the distal end. In particular, the nesting between the structural members 11 is enabled by forming the outer surface of the leg portion 13 in a flat shape. In addition, this leg part 13 is continuously formed integrally with the frame 21 at the base end. Further, a fitting portion 13a having an uneven shape is formed at the tip of the leg portion 13, and the fitting portion 13a faces the surface side of the structural member 11 and the surface side of another structural member 11 so as to face each other. Thus, when the structural member 11 is laminated, the structural member 11 is fitted to the fitting portion 13a formed on another structural member 11. Such a fitting suppresses the problem that the structural member 11 that has finished being stacked is displaced. A plurality of through-holes 15 that open to the front and back are provided in the upper surface of the fitting portion 13a, and these through-holes 15 function as a water flow path and an air vent.

  Of the partitioned regions in the frame body 21, the regions located between the regions where the leg portions 13 are erected and located between the vertical ribs 22 and the frame body 21 are laterally separated by the partitioned vertical ribs 24. The outer region is further divided into two in the vertical direction by the partition lateral rib 25. In one of the areas partitioned by the partition lateral ribs 25, a fitting convex part 26 protrudes in the back surface direction, and in the other area, a fitting concave part 27 is recessed in the back surface direction. . The fitting convex portion 26 and the fitting concave portion 27 are fitted when the structural member 11 is laminated so that the back surface side of the structural member 11 faces the back surface side of another structural member 11. Such a fitting suppresses the problem that the structural member 11 that has finished being stacked is displaced. Note that a plurality of through-holes 15 that open to the front and back are provided in the fitting convex portion 26 and the fitting concave portion 27.

  As shown in FIG. 1B, the guide member 14 is erected in the surface direction in the inner region of the regions partitioned by the partition vertical ribs 24. The guide member 14 has a quadrangular cylindrical shape that opens on the back surface side, and is formed in a quadrangular frustum shape that gradually decreases in diameter from the proximal end toward the distal end. The guide member 14 is formed so that the length from the base end to the tip end thereof is substantially the same as the length of the leg portion 13. The guide member 14 directs the flow of water through the gap between the leg portions 13.

  Among the partitioned areas in the frame body 21, three areas located between the longitudinal ribs 22 and arranged in the longitudinal direction are reinforced longitudinally connecting the lateral ribs 23 and the frame body 21 or between the lateral ribs 23. Reinforcing lateral ribs 29 for connecting the ribs 28 and the longitudinal ribs 22 are provided. In addition, as shown in FIG.1 (b), although the surface side of the block stand 20 is coat | covered over the whole surface, the coating | coated surface is the frame 21, the leg part 13, the guide member 14, and a frame. It is molded integrally with various ribs provided in the body 21.

  As shown in FIG.1 (b) and FIG. 2, a part of coating | coated surface has comprised the traveling path 30 for making a self-propelled traveling vehicle drive | work. The travel path 30 is located between the leg portions 13 and extends in the vertical direction (vertical direction in FIG. 2) and is formed so as to connect one opposing side edge of the block base 20. In addition, as a self-propelled traveling vehicle, the self-propelled traveling vehicle disclosed by Unexamined-Japanese-Patent No. 5-164698 and Unexamined-Japanese-Patent No. 9-24824 is mentioned, for example.

  As shown in FIG. 4, the side portion 31 of the travel path 30 forms an inclined surface that inclines in the standing direction of the leg portion 13 (upward in FIG. 4) from the center side of the travel path 30 toward the side edge. Yes. The side portion 31 is formed integrally with the leg portion 13 and the guide member 14 at the upper end thereof. As shown in FIG. 4, the vertical rib 22 is located on the back surface side of the side portion 31, and the strength of the side portion 31 is ensured by the vertical rib 22.

  As shown in FIGS. 2 and 3, the central portion 32 of the travel path 30 is formed by a plurality of continuous planes arranged in parallel with the travel direction of the travel path 30. Specifically, the central portion 32 is located on the side edge side of the block table 20, is positioned on the inner side in the traveling direction of the first plane 32 a that forms a horizontal plane, and the first plane 32 a, toward the center of the block table 20. It is formed from a second plane 32b that forms a slope that slopes downward, and a third plane 32c that is positioned inside the second plane 32b and forms a horizontal plane. In the present embodiment, the first plane 32a, the second plane 32b, and the third plane 32c correspond to the planes defined in the claims. The central portion 32 forms a undulation having a depression near the center of the block base 20 as a whole, and this is a configuration for making it easy to collect deposits in the structural member 11 in one place. As shown in FIGS. 3 and 4, the lateral rib 23, the reinforcing longitudinal rib 28, and the reinforcing lateral rib 29 are located on the back side of the central portion 32, and the strength of the central portion 32 is increased by these ribs. It is secured.

  As shown in FIGS. 1B and 2, a plurality of circular through-holes 15 opening on the front and back surfaces are provided in the traveling path 30, and the size of the through-holes 15 is that of a self-propelled traveling vehicle. It is formed to be sufficiently small with respect to the size of the wheel. As shown in FIGS. 2 and 3, the third plane 32 c forming the central portion 32 is provided with a plurality of slits 33 extending in an intersecting direction such as inclined or orthogonal to the traveling direction of the traveling path 30. ing. The slit 33 is formed so that its width is sufficiently smaller than the width of the wheel of the self-propelled traveling vehicle.

  As shown in FIG. 1B, the structural member 11 of the present embodiment formed by arranging the block base 20 in the vertical 2 × lateral 2 position is located between the legs 13 and one of the structural members 11. Two traveling paths 30 extending in parallel to connect the opposite side edges are formed in parallel.

  Next, an example of the juxtaposed laminated structure 10 constructed from the structural member 11 of the present embodiment and the water storage tank 40 will be described. As shown in FIG. 5, the water storage tank 40 has the manhole 43 and the juxtaposed laminated structure 10 arranged on the upper part of the foundation 42 formed by laying crushed stones or the like on the bottom surface of the hole 41 formed by excavating the ground. Become. Then, after filling the remaining space in the hole 41 with sand or earth, the water storage tank 40 is formed by paving the ground surface with asphalt or the like.

  In the juxtaposed laminated structure 10 disposed in the water storage tank 40, the rear surface side of the structural member 11 is aligned with the upper surface of the foundation 42 and the orientation of the structural member 11 is aligned. It is constructed by sequentially stacking together. At this time, inside the juxtaposed laminated structure 10, the traveling paths 30 provided in the respective structural members 11 are connected to form a passage T (see FIG. 5). The passages T are linear passages extending in the juxtaposed direction of the juxtaposed laminated structure 10, and are formed in parallel in the juxtaposed laminated structure 10 according to the arrangement state of the structural members 11.

  As shown in FIG. 5, the juxtaposed laminated structure 10 is arranged in a state where the entire structure is covered with a sheet layer 44 including a protective sheet, a water-permeable sheet, a water-impervious sheet, and the like according to the installation environment. In addition, the juxtaposed laminated structure 10 is connected to a drainage facility such as a drainage groove, and is connected to an inflow path for taking in rainwater and a drainage device for discharging rainwater stored inside to the outside. (Not shown). The juxtaposed laminated structure 10 thus formed fulfills the function of securing the storage space of the water storage tank 40 and supporting the ground surface on the storage space.

  The manhole 43 disposed in the water storage tank 40 is provided on the opening side of the passage T formed inside the juxtaposed laminated structure 10, and is connected to the juxtaposed laminated structure 10 through a cylindrical connecting pipe 45. ing. The connecting pipe 45 is disposed so as to face the opening of the passage T formed at the lowermost stage of the juxtaposed laminated structure 10, and the entrance / exit of the self-propelled traveling vehicle when inspecting the inside of the juxtaposed laminated structure 10 Function as. Further, in the connection portion with the juxtaposed laminated structure 10, the connecting pipe 45 has a lower end on the inner peripheral surface from the travel path 30 so that a step formed between the inner peripheral surface and the travel path 30 is reduced. Are also arranged so as to be positioned below. The connecting pipe 45 is provided for each passage T formed in the lowest stage of the juxtaposed laminated structure 10.

  In the water storage tank 40 thus installed, a self-propelled traveling vehicle equipped with a camera is introduced from the manhole 43 into the juxtaposed laminated structure 10 via the connecting pipe 45, and the interior of the self-propelled traveling vehicle is introduced. Inspection is performed. At this time, the operator only operates the self-propelled traveling vehicle in the manhole 43, and the operator can inspect the inside without entering the juxtaposed laminated structure 10.

Next, operational effects in the present embodiment will be described below.
(1) The structural member 11 of the present embodiment is provided with a traveling path 30 for traveling a self-propelled traveling vehicle on the surface of the base 12, and the traveling path 30 is located between the leg portions 13. It is formed so as to connect between one opposing side edges of the table 12. Therefore, in the juxtaposed laminated structure 10 constructed from the structural member 11 of the present embodiment, a passage T that extends in the juxtaposition direction of the structural member 11 and is capable of traveling a self-propelled traveling vehicle is formed. Thereby, it becomes possible to check the juxtaposed laminated structure 10 by a self-propelled traveling vehicle equipped with a camera. Therefore, when the inside of the juxtaposed laminated structure 10 is inspected, the operator only has to operate the self-propelled traveling vehicle from the outside of the juxtaposed laminated structure 10 and does not need to enter the juxtaposed laminated structure 10. Therefore, according to the structural member 11 of the present embodiment, the inside of the juxtaposed laminated structure 10 can be easily and in a short time.

  (2) In the present embodiment, the central portion 32 of the travel path 30 includes a first plane 32 a, a second plane 32 b, and a third plane 32 c, and these planes are continuous with respect to the travel direction of the travel path 30. It is formed to do. As a result, the rattling of the self-propelled traveling vehicle and the hooking of the cord extending from the self-propelling traveling vehicle when traveling on the central portion 32 are suppressed compared to the configuration in which the uneven surface exists in the central portion 32. As a result, the self-propelled vehicle can run smoothly.

  (3) In the present embodiment, the side portion 31 of the travel path 30 forms an inclined surface that inclines in the standing direction of the leg portion 13 from the center side of the travel path 30 toward the side edge. As a result, as shown in FIG. 4, when the self-propelled traveling vehicle traveling on the traveling path 30 approaches the side edge side of the traveling path 30, for example, the left side for some reason, the left wheel of the self-propelled traveling vehicle is It rides on the side portion 31 that forms the inclined surface, and the entire vehicle body is inclined toward the center side of the traveling path 30 (a state indicated by a two-dot chain line portion). At this time, since a force in the direction of the center of the travel path 30 acts on the self-propelled traveling vehicle due to its own weight, the self-propelled traveling vehicle returns to the center portion 32 (position indicated by the solid line portion) of the traveling path 30. It becomes easy. Therefore, according to the structural member 11 of the present embodiment, the self-propelled traveling vehicle traveling on the traveling path 30 can be easily moved straight along the traveling direction.

  (4) When the side portion 31 does not have the inclined surface as described above, when the self-propelled traveling vehicle approaches the side edge side of the traveling path 30, the entire side surface of the wheel of the self-propelled traveling vehicle is the leg portion. There is a risk that a running failure may occur due to sliding contact with the side surface of 13. In the configuration of the present embodiment, when the self-propelled traveling vehicle approaches the side edge side of the traveling path 30, the wheels of the self-propelled traveling vehicle ride on the inclined surface and are inclined, and the side surface of the leg portion 13 and the self-propelled traveling vehicle. A gap is formed between the entire side surface of the wheel of the traveling vehicle. Therefore, the entire side surface of the wheel of the self-propelled traveling vehicle does not slidably contact the side surface of the leg portion 13, and the above-described traveling failure does not occur.

  (5) In the present embodiment, the longitudinal rib 22 is positioned on the back surface side of the side portion 31 in the traveling path 30, and the lateral rib 23, the reinforcing vertical rib 28, and the reinforcing lateral rib are disposed on the back surface side of the center portion 32. 29 is located. The traveling path 30 is a part where a self-propelled traveling vehicle exceeding 10 kilograms moves in some cases, and is a part where deformation such as depression and inclination is likely to occur due to its weight. In particular, the structural member 11 formed of synthetic resin is likely to be deformed as described above as compared with a metal member or a concrete member. In the present embodiment, by arranging a plurality of ribs on the back surface side of the travel path 30 to ensure the strength of the travel path 30, deformation of the travel path 30 that may occur when the self-propelled traveling vehicle travels is suppressed. ing.

  (6) In the present embodiment, a plurality of slits 33 extending in a direction intersecting with the traveling direction of the traveling path 30 are provided on the third plane 32 c constituting the central portion 32 of the traveling path 30. The formation of the slit 33 is a means for reducing the weight of the structural member 11, and when the structural member 11 is stacked up and down, the slit 33 also functions as a water flow path and an air vent between the structural members 11. . However, if the slit 33 is provided in parallel with the traveling direction of the traveling path 30, when the wheel of the self-propelled traveling vehicle falls in the slit 33, it is highly possible that the wheel will idle and a traveling failure occurs. Easy to do. In the present embodiment, the slit 33 is formed in a direction intersecting with the traveling direction, so that the weight of the structural member 11 is reduced, and the occurrence of the above-described traveling obstacle is suppressed and the self-propelled traveling is performed. The impact on driving is minimized.

  (7) In order to clean and remove the deposits deposited on the juxtaposed laminated structure 10, a method of washing the deposits in the traveling direction of the traveling path 30 using a high-pressure water stream is effective. At this time, since the guide member 14 is erected along the traveling path 30 on the surface of the base 12, the flow of water in the direction orthogonal to the traveling direction of the traveling path 30 is restricted. Therefore, the deposit is easily guided in the traveling direction of the traveling path 30, and the deposit can be efficiently washed out from the juxtaposed laminated structure 10.

In addition, this embodiment can also be changed and embodied as follows.
-Although the structure member 11 of this embodiment employ | adopted the structure laminated | stacked so that the back surfaces and surfaces may match, it is made to match the surface side of the structural member 11, and the back surface side of another structural member 11. FIG. It may be configured to be laminated. For example, on the back surface of the base 12, a fitting portion that can be fitted with the fitting portion 13a formed on the leg portion 13 is provided, and the fitting portion and the fitting portion 13a are fitted. It is good also as a structure which laminates | stacks the structural member 11. FIG.

  In the present embodiment, the square block base 20 is arranged to be 2 × 2 in the vertical direction to form the base 12, but the shape of the block base 20 and the arrangement configuration thereof are limited to this. is not. For example, a rectangular block base 20 may be employed, or a hexagonal block base 20 may be employed. In addition, the block bases 20 may be arranged in a line, may be arranged in a length of 2 × 4, or the base 12 may be formed by one block base 20. Furthermore, you may form the base 12 combining the block base 20 of a different shape.

  -In this embodiment, although the four leg parts 13 were standingly arranged with respect to one block stand 20, the number of the leg parts 13 is not restricted to this, Any number may be sufficient. In addition, the leg portion 13 has a square cylindrical shape and is formed in a quadrangular frustum shape whose diameter is reduced from the base end portion toward the distal end portion, but the shape of the leg portion 13 is not limited to this. Alternatively, it may be a cylindrical shape or a truncated cone shape. Moreover, you may provide the leg part 13 between the side edges which the block stand 20 opposes. Further, straight legs 13 formed continuously with the entire side portion 31 of the travel path 30 may be provided on both sides of the travel path 30.

  The side portion 31 of the traveling path 30 is formed so as to incline in the standing direction of the leg portion 13 from the central side of the traveling path 30 toward the side edge side, but the shape of the side portion 31 is limited to this. It is not a thing. For example, even when the side portion 31 is formed in a curved surface shape in which a cross-sectional shape in a direction orthogonal to the traveling direction of the traveling path 30 forms an arc, the effect (2) can be obtained. Moreover, the side part 31 may form the horizontal surface.

  The central portion 32 of the travel path 30 includes a first plane 32a, a second plane 32b, and a third plane 32c, and is formed so that five surfaces are continuous with respect to the travel direction of the travel path 30. However, the shape of the central portion 32 is not limited to this. For example, the number of planes forming the central portion 32 may be 4 or less, or 6 or more. Moreover, the center part 32 may be formed by the curved surface, and the plane and the curved surface may be mixed. Steps such as ribs and protrusions may be formed on the central portion 32 in a range that does not hinder the traveling of the self-propelled traveling vehicle.

  The central portion 32 forms an undulation having a depression near the center of the block base 20, but the undulation shape formed by the central portion 32 may be any shape. For example, the shape may continue to be inclined downward in the traveling direction. Further, the entire central portion 32 may be formed in a horizontal plane without undulations, or may be formed as a straight plane connecting between the opposing side edges of the block base 20.

  In the present embodiment, the slit 33 is provided in the third plane 32c, but the slit 33 is not limited to the third plane 32c, and may be provided in any position on the travel path 30. In the present embodiment, the slit 33 is formed so as to extend in a direction intersecting with the traveling direction of the traveling path 30, but may be formed so as to extend in parallel with the traveling direction. The slit 33 may not be provided.

  -In this embodiment, although the circular through-hole 15 opened on the front and back with respect to the traveling path 30 was penetrated, the shape of this through-hole 15 is not restricted to this. For example, it may be formed in an elliptical shape or a polygonal shape. Further, the through hole 15 may be provided at any position on the travel path 30.

  In the present embodiment, the vertical ribs 22, the horizontal ribs 23, the reinforcing vertical ribs 28, and the reinforcing horizontal ribs 29 are arranged so as to be located on the back surface side of the traveling path 30, but the arrangement configuration of each rib is as follows. It is not restricted to, It may be arranged in any way. For example, more ribs may be concentrated on the back surface side of the travel path 30, and each rib may be arranged regardless of the position of the travel path 30. Alternatively, only one of the reinforcing vertical ribs 28 and the reinforcing horizontal ribs 29 may be provided.

  As shown in FIG. 6, a sheet material 34 may be laid on the traveling path 30. The sheet material 34 is formed wider than the travel path 30 and is arranged so as to be bent in a shape along the side surfaces of the leg portion 13 and the guide member 14. In the case of such a configuration, since the recess formed between the block bases 20 in one structural member 11 is covered with the sheet material 34, between this recess and the wheel of the traveling vehicle. The generated catch and rattling are suppressed. Further, both side portions of the sheet material 34 bent along the leg portion 13 and the guide member 14 cover a gap formed between the leg portions 13 and between the leg portion 13 and the guide member 14 on the traveling path 30 side. To do. Thereby, generation | occurrence | production of the driving | running | working failure resulting from the wheel and corner | angular part of a self-propelled traveling vehicle being caught in the said clearance gap is suppressed.

  In addition, the sheet | seat material 34 should just be laid in the center part 32 of the traveling path 30, and the width | variety and laying state are not specifically limited. In the case where the sheet material 34 is laid only on the central portion 32, an inflexible plate-like member may be used as the sheet material 34.

  The structural member 11 is not limited to the water storage tank 40 as shown in FIG. 5 that stores rainwater to prevent flooding, but stores a water storage tank for agricultural water, a water storage tank for fire prevention water, and water for fountains. It can also be applied to a water storage tank or the like.

Next, a technical idea that can be grasped from the above embodiment and another example will be described.
A structural member for a water storage tank, wherein the travel path is provided with a slit extending in a direction intersecting the travel direction of the travel path.

(A), (b) is a perspective view which shows the structural member of this embodiment. The top view of the one block stand in the structural member of this embodiment. AA sectional view taken on the line in FIG. BB sectional drawing in FIG. Schematic which shows the water storage tank of this embodiment. The perspective view which shows the structural member of another example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Parallel laminated structure, 11 ... Structural member, 12 ... Base, 13 ... Leg part, 28 ... Reinforcement vertical rib, 29 ... Reinforcement lateral rib, 30 ... Running road, 31 ... Side part, 32 ... Center part, 34 ... sheet material, 40 ... water storage tank.

Claims (5)

It is made of synthetic resin, has a base and a plurality of legs standing on the surface of the base, and secures a storage space for the water storage tank by stacking a plurality while juxtaposing them. A structural member for a water storage tank constituting a juxtaposed laminated structure,
A traveling path for traveling a self-propelled traveling vehicle is provided on the surface of the base, and the traveling path passes between the legs and is between at least one pair of opposing side edges of the base. A structural member for a water storage tank, wherein the structural member is formed so as to tie. The central portion of the travel path is formed by a flat surface that is continuous with respect to the travel direction, and the flat surface is a slope surface or a horizontal surface that is inclined toward the travel direction. Structural member for water storage tank. The side part of the said travel path forms the inclined surface which inclines in the standing direction of the said leg part toward the side edge side from the center side of this travel path, The Claim 1 or Claim 2 characterized by the above-mentioned. The structural member for water storage tanks of description. The said base is provided with the reinforcement rib for supporting the load added to the said travel path on the back surface side of the site | part in which the said travel path is located. The structural member for water storage tanks described in 1. The structural member for a water storage tank according to any one of claims 1 to 4, wherein a sheet material is laid on the travel path.

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