CN213836969U - Plastic rainwater storage module, assembly and water storage tank for enhancing lateral bearing capacity - Google Patents

Abstract

The utility model discloses a strengthen plastics rainwater water storage module of side direction bearing capacity relates to rainwater collection technical field, include: a base plate; the bearing columns are uniformly distributed on the bottom plate; the upper end and the lower end of each side plate can be detachably mounted on the bottom plate, the contact area between the upper end of each side plate and the bottom plate is larger than two thirds of the area of the upper end face of each side plate, and the contact area between the lower end of each side plate and the bottom plate is larger than two thirds of the area of the lower end face of each side plate. The utility model also discloses a plastics rainwater water storage module subassembly, including above-mentioned plastics rainwater water storage module and second hole plug, still disclose a tank including above-mentioned water storage module subassembly. The beneficial effects of the utility model are that through the area of contact of both ends and bottom plate about increasing the curb plate for the curb plate can be better transmits the external force that receives for the bottom plate, strengthens module bottom plate intensity, optimizes the hole plug structure, thereby can improve water storage module and the holistic side direction bearing capacity in combination pond.

Description

Plastic rainwater storage module, assembly and water storage tank for enhancing lateral bearing capacity

Technical Field

The utility model relates to a technical field is collected to the rainwater, specifically says a strengthen plastics rainwater water storage module, subassembly and tank of side bearing capacity.

Background

The water storage module is a novel water storage device of a rainwater utilization and rainwater regulation pool, has the advantages of good environmental protection, light weight, convenient installation, excellent water storage environment, recoverability and the like, and is suitable for constructing water storage pools or infiltration pools of permanent and temporary projects.

Plastic modular tanks are typically assembled from a plurality of modular units, assembled as a unit at the construction site, and wrapped with an impermeable material to form an underground reservoir. The single modules are made of materials through injection molding, different shapes and different volumes are combined according to the collected rainwater amount and the requirements of users, and plastic modules with different structural forms and different bearing strengths can be selected according to different bearing capacities of use occasions. The combined module water tank has the advantages of being fast in construction, flexible in layout, anti-aging, capable of preventing algae from breeding, good in anti-seismic performance, free of leakage, capable of being disassembled for remote reconstruction and the like, can be matched with a rainwater seepage and drainage integrated system and a pavement seepage plate product for use, replaces a permeable brick and a hardened pavement, can improve surface water accumulation and relieve urban waterlogging. The water storage can be provided for toilet flushing, green land irrigation, car washing, waterscape and other purposes through automatic equipment, and is widely applied to rainwater storage and rainwater collection and utilization in small buildings, villas, residential quarters and the like.

The module and the module rain pool in the existing market have various schemes, and the national standard is relatively perfect along with the continuous development of the module and the module rain pool. The core component of the modular rain pool is the module, the support columns of which determine the forward bearing capacity of the pool, and the bottom plate of which determines the lateral bearing capacity of the pool. There are also 4, 10, 12, 16 column products on the market, similar in basic structure. Except the module, the module combined rainwater tank also comprises accessories such as a side plate, a connecting column, a connecting clamp, a hole plug and the like. The stability of a modular storm pool requires a reasonable combination of modules and fittings.

The plastic module rain pool in the prior art has the problem of low structural strength, so that the module rain pool is easy to collapse, under most conditions, the forward bearing capacity of the combined rain pool can basically meet the actual use requirements, but the lateral bearing capacity of the combined rain pool is often insufficient, the accident reason analysis (except the quality problem) according to the collapse site of part of the water pools is carried out, most of collapse is mainly caused by insufficient lateral bearing capacity of the rain pool, the lateral soil pressure can change in long-term use, if the local soil pressure of the pool is increased and the lateral bearing capacity of the module combined pool is insufficient, the forward bearing capacity of a module is caused to lose effectiveness due to instability of local module supporting columns, and the collapse accident of the module combined pool is caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve one of the technical problem that exists among the prior art at least, provide a plastics rainwater water storage module, subassembly and tank of strengthening the side direction bearing capacity.

The technical solution of the utility model is as follows:

the utility model provides a strengthen plastics rainwater water storage module of side direction bearing capacity which characterized in that includes:

a base plate;

the bearing columns are uniformly distributed on the bottom plate;

the upper end and the lower end of each side plate can be detachably mounted on the bottom plate, the contact area between the upper end of each side plate and the bottom plate is larger than two thirds of the area of the upper end face of each side plate, and the contact area between the lower end of each side plate and the bottom plate is larger than two thirds of the area of the lower end face of each side plate.

Preferably, a plurality of supporting columns are formed on one surface of the side plate close to the bearing columns, each supporting column is at least supported on one bearing column, and the sum of the contact areas of the supporting columns on the side plate and the bearing columns is larger than one third of the area of the side plate.

Preferably, a plurality of first reinforcing ribs, a plurality of second reinforcing ribs, a plurality of third reinforcing ribs and a plurality of fourth reinforcing ribs are formed on the bottom plate, the first reinforcing ribs, the second reinforcing ribs, the third reinforcing ribs and the fourth reinforcing ribs are parallel to each other, and the first reinforcing ribs, the second reinforcing ribs, the third reinforcing ribs and the fourth reinforcing ribs are arranged in a mutually crossing manner.

Preferably, the first reinforcing rib and the second reinforcing rib are perpendicular to each other, the third reinforcing rib and the fourth reinforcing rib are perpendicular to each other, and an angle of 45 degrees is formed between the third reinforcing rib and the first reinforcing rib.

Preferably, the bearing column is of a hollow column structure, a hole plug mounting hole communicated with the bearing column is formed in the bottom plate, a first hole plug is detachably mounted in the hole plug mounting hole, the inner side wall of the hole plug mounting hole is completely attached to the outer side wall of the first hole plug, and the thickness of the first hole plug is larger than or equal to that of the bottom plate.

Preferably, the first reinforcing rib, the second reinforcing rib, the third reinforcing rib and the fourth reinforcing rib are located on the outer side of the hole plug mounting hole and are connected with the outer side wall of the hole plug mounting hole.

Preferably, a plurality of bearing column reinforcing ribs are arranged between the bearing column and the bottom plate, one side of each bearing column reinforcing rib is fixedly connected with the bearing column, and the other side of each bearing column reinforcing rib is fixedly connected with the bottom plate.

Preferably, a plurality of mounting grooves and bottom plate convex parts located between the mounting grooves are arranged on the periphery of the bottom plate at intervals, a plurality of mounting blocks capable of being inserted into the mounting grooves and side plate concave parts located between the mounting blocks are arranged at the upper end and the lower end of each side plate, the mounting blocks are inserted into the mounting grooves, the end faces of the mounting blocks are in full contact with the end faces of the mounting grooves, and the bottom plate convex parts are corresponding to the side plate concave parts in position and in full contact with the side plate concave parts.

The utility model provides a plastics rainwater water storage module subassembly, includes above-mentioned plastics rainwater water storage module and second hole stopper, second hole stopper and hole stopper mounting hole looks adaptation, and the thickness of second hole stopper is more than or equal to the twice of bottom plate thickness, and two are vertical adjacent plastics rainwater water storage module passes through second hole stopper demountable installation and can splice in the hole stopper mounting hole.

A water storage pool comprises the plastic rainwater storage module component.

The utility model discloses one of following beneficial effect has at least:

the utility model discloses an aspect makes the curb plate can better transmit the external force that receives to the bottom plate through increasing the area of contact of both ends and bottom plate about the curb plate, thereby can improve the side direction bearing capacity of water storage module; on the other hand, the utility model discloses an increase the area of contact of the pillar of curb plate side and load post to can transmit the external force that the curb plate received to the load post through the pillar better, the bottom plate is transmitted in the rethread load post, further improves water storage module's side direction bearing capacity. Meanwhile, because the utility model discloses transmit the side bearing capacity that the curb plate received to bottom plate and bearing post, lead to the external force that bottom plate and bearing post received to increase, in order to further strengthen the bearing capacity of bottom plate and bearing post, on the one hand the utility model discloses on the one hand through set up first strengthening rib, second strengthening rib, third strengthening rib and fourth strengthening rib crisscross setting each other on the bottom plate, thereby reduced the size of hole on the bottom plate, improved the intensity of bottom plate, and because the reinforcing effect of strengthening rib, also further strengthened the structural strength of bottom plate; on the other hand, the utility model discloses an increase the thickness of first hole plug for the bearing capacity of first hole plug itself obtains the reinforcing, thereby has improved the intensity of bottom plate, and has increased the area of contact of first hole plug and bottom plate, makes first hole plug can transmit the external force that receives to the bottom plate, reduces bottom plate hole plug position and warp, prevents stress concentration, has improved water storage module's holistic structural strength. The utility model discloses a set up the strengthening rib on the load post, improved the structural strength of load post to can improve the bearing capacity of load post.

The utility model discloses still through setting up the second hole stifled, splice between the upper and lower two-layer water storage module has been realized through the second hole stifled, compares the concatenation of adopting the alkali level post to realize upper and lower two-layer water storage module among the prior art, the utility model discloses a second hole stifled structure is more firm, reduces the dislocation between the water storage module to the second hole stifled external force side direction transmission to the bottom plate that can receive reduces bottom plate hole and blocks up the position and warp, prevents stress concentration, and simultaneously, the thickness of second hole stifled is greater than or equal to the twice of bottom plate thickness, and the bearing capacity of second hole stifled itself has also obtained the enhancement to the intensity of whole module subassembly and tank has been improved.

Drawings

Fig. 1 is a schematic structural view of a plastic rainwater storage module according to a preferred embodiment of the present invention;

fig. 2 is an exploded schematic view of a plastic rainwater storage module according to a preferred embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a bottom plate in a preferred embodiment of the present invention;

fig. 4 is a schematic structural view of a plastic rainwater storage module assembly and a water storage tank according to a preferred embodiment of the present invention;

fig. 5 is an exploded schematic view of a plastic rainwater storage module assembly and a water storage tank according to a preferred embodiment of the present invention;

reference numerals: 1. a base plate; 11. a first reinforcing rib; 12. a second reinforcing rib; 13. a third reinforcing rib; 14. a fourth reinforcing rib; 15. mounting grooves; 151. a card slot; 16. a bottom plate projection; 17. plugging the mounting hole; 171. plugging the clamping groove; 18. a connecting column mounting hole; 19. a connecting block mounting groove; 2. a bearing column; 21. a bearing column reinforcing rib; 22. a bearing column mounting hole; 23. a bearing column mounting block; 24. a bearing column clamping block; 3. a side plate; 31. a pillar; 32. mounting blocks; 321. a clamping block; 33. a side plate recess; 4. a first hole plug; 41. a first hole plugging fixture block; 5. a second hole plug; 51. a second hole plugging fixture block; 6. connecting columns; 7. and (4) connecting the blocks.

Detailed Description

The present invention will be described in further detail with reference to the following specific examples, but the present invention is not limited to the following specific examples.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

Referring to fig. 1-3, the embodiment provides a strengthen plastics rainwater water storage module of side bearing capacity, includes: a pair of upper and lower matched module single bodies and a side plate 3 arranged on the outer side surface of the module single body.

Each module single body comprises a bottom plate 1 and a plurality of bearing columns 2, and the bearing columns 2 are uniformly distributed on the bottom plate 1; in this embodiment, the number of the bearing columns 2 is 8, in other embodiments, the number of the bearing columns 2 may be 4, 10, 12, and the like, and the base plate 1 and the bearing columns 2 are of an integrally formed structure.

Referring to fig. 3, the bottom plate 1 is formed with a plurality of first reinforcing ribs 11 that are parallel to each other, a plurality of second reinforcing ribs 12 that are parallel to each other, a plurality of third reinforcing ribs 13 that are parallel to each other and a plurality of fourth reinforcing ribs 14 that are parallel to each other, first reinforcing rib 11, second reinforcing rib 12, mutual crossing arrangement between third reinforcing rib 13 and the fourth reinforcing rib 14, be formed with the hole that leaks between first reinforcing rib 11, second reinforcing rib 12, third reinforcing rib 13 and the fourth reinforcing rib 14, thereby the rainwater can pass through from the hole that leaks. In this embodiment, first strengthening rib 11 and second strengthening rib 12 mutually perpendicular set up, third strengthening rib 13 and fourth strengthening rib 14 mutually perpendicular set up, and third strengthening rib 13 respectively with first strengthening rib 11, be 45 jiaos between the second strengthening rib 12, first strengthening rib 11 transversely sets up promptly, the vertical setting of second strengthening rib 12, third strengthening rib 13 transversely upwards inclines 45 jiaos relatively and sets up, the relative horizontal downward sloping 45 jiaos of fourth strengthening rib 13 sets up, this embodiment is through first strengthening rib 11, second strengthening rib 12, the crisscross setting each other between third strengthening rib 13 and the fourth strengthening rib 14, both reduced the size in the hole that leaks, the structural strength of bottom plate 1 has also been improved.

Bearing post 2 is 8 anomalous circular bearing posts, and evenly arranges on bottom plate 1, transmits and bears the top load, 2 one end of bearing post and 1 body coupling of bottom plate, and is provided with a plurality of bearing post strengthening rib 21 between bearing post 2 and the bottom plate 1, one side and 2 fixed connection of bearing post strengthening rib 21, opposite side and 1 fixed connection of bottom plate for strengthen the structure of bearing post 2. The other end of the upper bearing column 2 is detachably connected with the other end of the lower bearing column 1; in this embodiment, the lower end of the bearing column 2 is a big end, the upper end is a small end, the big end is integrally connected with the bottom plate, the small end is provided with a bearing column mounting hole 22 or a bearing column mounting block 23, the outer wall of the bearing column mounting hole 22 is provided with a bearing column clamping block 24, the inner wall of the bearing column mounting hole 22 is provided with a clamping groove matched with the bearing column clamping block 24, the bearing column mounting block 23 is inserted into the bearing column mounting hole 22, and the bearing column clamping block 24 is clamped in the clamping groove, so that the detachable splicing of the upper and lower bearing columns 2 is realized.

The upper end and the lower end of the side plate 3 can be detachably mounted on the bottom plate 1, the contact area between the upper end of the side plate 3 and the bottom plate 1 is larger than two thirds of the area of the upper end surface of the side plate 3, the contact area between the lower end of the side plate 3 and the bottom plate 1 is larger than two thirds of the area of the lower end surface of the side plate 3, in the embodiment, a plurality of mounting grooves 15 and bottom plate convex parts 16 positioned between the mounting grooves 15 are arranged at intervals on the periphery side of the bottom plate 1, clamping grooves 151 are arranged on the mounting grooves 15, a plurality of mounting blocks 32 capable of being inserted into the mounting grooves 15 and side plate concave parts 33 positioned between the mounting blocks 32 are arranged at the upper end and the lower end of the side plate 3, a clamping block 321 matched with the clamping grooves 151 is arranged on the mounting blocks 32, thereby the side plate 3 is inserted into the mounting grooves 15 through the mounting blocks 32 and the clamping block 321 is clamped in the clamping grooves 151 to realize the detachable mounting on the bottom plate 1, and the end surface of the mounting blocks 32 is completely contacted with the end surface of the mounting grooves 15, the bottom plate convex part 16 corresponds and contacts completely with the position of the side plate concave part 33, so that the contact area between the upper end of the side plate 3 and the bottom plate 1 is equal to the area of the upper end surface of the side plate 3, the contact area between the lower end of the side plate 3 and the bottom plate 1 is equal to the area of the lower end surface of the side plate 3, the contact area between the side plate 3 and the bottom plate 1 is increased, the side plate 3 can better transmit the received external force to the bottom plate 1, and the lateral bearing capacity of the water storage module can be improved.

A plurality of supporting columns 31 are formed on one surface of the side plate 3 close to the bearing column 2, each supporting column 31 is at least supported on one bearing column 2, the sum of the contact areas of the supporting columns 31 on the side plate 3 and the bearing column 2 is larger than one third of the area of the side plate 3, in the embodiment, 4 supporting columns 31 are arranged on each side plate 3, and the supporting columns 31 are oval. Through increasing the area of contact of pillar 31 and force bearing post 2 to can go out the better dispersion of the external force that the curb plate 2 received, thereby improved 2 lateral bearing capacity of curb plate.

The bearing column 2 is a hollow column structure, a hole plug mounting hole 17 communicated with the bearing column 2 is formed on the base plate 1, a first hole plug 4 is detachably mounted in the hole plug mounting hole 17, a first hole plug fixture block 41 is arranged on the outer wall of the first hole plug 4, a clamping groove matched with the first hole plug fixture block 41 is arranged on the inner wall of the hole plug mounting hole 17, the inner side wall of the hole plug mounting hole 17 is completely attached to the outer side wall of the first hole plug 4, the thickness of the first hole plug 4 is larger than or equal to that of the base plate 1, so that the first hole plug 4 not only plays a role of a sealing cover, but also because the first hole plug 4 is completely attached to the hole plug mounting hole 17, the first hole plug 4 can laterally transmit the received external force to the base plate 1, the deformation of a hole on the base plate 1 is reduced, the stress concentration is reduced, and the thickness of the first hole plug 4 is larger than or equal to that of the base plate 1, the bearing capacity of the first hole plug 4 is also enhanced, thereby improving the strength of the entire chassis 1.

In this embodiment, first strengthening rib 11, second strengthening rib 12, third strengthening rib 13 and fourth strengthening rib 14 are located the outside of plug mounting hole 17, and all are connected with plug mounting hole 17 lateral wall, through the supporting role of first strengthening rib 11, second strengthening rib 12, third strengthening rib 13 and fourth strengthening rib 14, have improved the structural strength of plug mounting hole 17 to whole bottom plate 1's intensity has finally been improved.

As shown in fig. 4-5, a structure of plastics rainwater storage module subassembly and tank is provided, plastics rainwater storage module subassembly and tank are all formed by the concatenation of a plurality of plastics rainwater storage module, still include second hole stifled 5, spliced pole 6 and connecting block 7, and second hole stifled 5 and spliced pole 6 are used for the vertical concatenation of a plurality of plastics rainwater storage module, and connecting block 7 is used for the horizontal concatenation of a plurality of plastics rainwater storage module.

As shown in fig. 5, the second plug 5 is adapted to the plug mounting hole 17, the outer wall of the second plug 5 is provided with a first plug fixture block 51 matched with a clamping groove on the inner wall of the plug mounting hole 17, the thickness of the second plug 5 is greater than or equal to twice the thickness of the bottom plate 1, two vertically adjacent plastic rainwater storage modules are detachably mounted in the plug mounting hole 17 through the second plug 5 and can be spliced, and the second plug 5 can be attached to the inner walls of the plug mounting holes 17 on the upper bottom plate 1 and the lower bottom plate 1, so that the second plug 5 not only has the function of connecting the upper bottom plate 1 and the lower bottom plate 1, the splicing of the upper plastic rainwater storage module and the lower plastic rainwater storage module is realized, and the dislocation when the upper plastic rainwater storage module and the lower plastic rainwater storage module are spliced is reduced; and because second plug 5 all laminates completely with plug mounting hole 17 on two upper and lower bottom plates 1 for second plug 5 can be with the external force lateral transfer who receives to bottom plate 1, reduces the hole deflection on bottom plate 1, reduces stress concentration, and, the thickness of second plug 5 is more than or equal to the twice of bottom plate 1 thickness, and the bearing capacity of second plug 5 itself has also obtained the enhancement, thereby has improved the intensity of whole module component and tank.

Still be provided with spliced pole mounting hole 18 and connecting block mounting groove 19 on bottom plate 1, spliced pole 6 can be detachably installed in spliced pole mounting hole 18 to the vertical concatenation of a plurality of plastics rainwater water storage module, connecting block 7 can be detachably installed at connecting block mounting groove 19, thereby the horizontal concatenation of a plurality of plastics rainwater water storage module.

The above are merely examples of the features of the present invention, and do not limit the scope of the present invention. All technical solutions formed by adopting equivalent exchanges or equivalent replacements fall within the protection scope of the present invention.

Claims (10)

1. The utility model provides a strengthen plastics rainwater water storage module of side direction bearing capacity which characterized in that includes:

a base plate (1);

the bearing columns (2) are uniformly distributed on the bottom plate (1);

the upper end and the lower end of the side plate (3) are detachably mounted on the bottom plate (1), the contact area between the upper end of the side plate (3) and the bottom plate (1) is larger than two thirds of the area of the upper end face of the side plate (3), and the contact area between the lower end of the side plate (3) and the bottom plate (1) is larger than two thirds of the area of the lower end face of the side plate (3).

2. The plastic rainwater storage module with enhanced lateral bearing capacity according to claim 1, wherein a plurality of supporting columns (31) are formed on one surface of the side plate (3) close to the bearing column (2), each supporting column (31) is supported on at least one bearing column (2), and the sum of the contact areas of the supporting columns (31) on the side plate (3) and the bearing column (2) is more than one third of the area of the side plate (3).

3. The plastic rainwater storage module with the enhanced lateral bearing capacity according to claim 1, wherein a plurality of first reinforcing ribs (11) which are parallel to each other, a plurality of second reinforcing ribs (12) which are parallel to each other, a plurality of third reinforcing ribs (13) which are parallel to each other and a plurality of fourth reinforcing ribs (14) which are parallel to each other are formed on the bottom plate (1), and the first reinforcing ribs (11), the second reinforcing ribs (12), the third reinforcing ribs (13) and the fourth reinforcing ribs (14) are arranged in a mutually crossing manner.

4. The plastic rainwater storage module with the enhanced lateral bearing capacity according to claim 3, wherein the first reinforcing rib (11) and the second reinforcing rib (12) are arranged perpendicular to each other, the third reinforcing rib (13) and the fourth reinforcing rib (14) are arranged perpendicular to each other, and an angle of 45 degrees is formed between the third reinforcing rib (13) and the first reinforcing rib (11).

5. The plastic rainwater storage module with the enhanced lateral bearing capacity according to claim 4, wherein the bearing column (2) is of a hollow column structure, a hole plug mounting hole (17) communicated with the bearing column (2) is formed in the bottom plate (1), a first hole plug (4) is detachably mounted in the hole plug mounting hole (17), the inner side wall of the hole plug mounting hole (17) is completely attached to the outer side wall of the first hole plug (4), and the thickness of the first hole plug (4) is greater than or equal to that of the bottom plate (1).

6. The plastic rainwater storage module with the enhanced lateral bearing capacity according to claim 5, wherein the first reinforcing rib (11), the second reinforcing rib (12), the third reinforcing rib (13) and the fourth reinforcing rib (14) are positioned outside the hole plug mounting hole (17) and are connected with the outer side wall of the hole plug mounting hole (17).

7. The plastic rainwater storage module with the enhanced lateral bearing capacity according to claim 1, wherein a plurality of bearing column reinforcing ribs (21) are arranged between the bearing column (2) and the bottom plate (1), one side of each bearing column reinforcing rib (21) is fixedly connected with the bearing column (2), and the other side of each bearing column reinforcing rib is fixedly connected with the bottom plate (1).

8. The plastic rainwater storage module with the enhanced lateral bearing capacity as claimed in claim 1, wherein a plurality of mounting grooves (15) and bottom plate convex parts (16) positioned between the mounting grooves (15) are arranged at intervals on the outer peripheral side of the bottom plate (1), a plurality of mounting blocks (32) capable of being inserted into the mounting grooves (15) and side plate concave parts (33) positioned between the mounting blocks (32) are arranged at the upper end and the lower end of each side plate (3), the mounting blocks (32) are inserted into the mounting grooves (15), the end surfaces of the mounting blocks (32) are in complete contact with the end surfaces of the mounting grooves (15), and the bottom plate convex parts (16) are corresponding to and in complete contact with the side plate concave parts (33).

9. A plastic rainwater storage module assembly, characterized by comprising a plurality of plastic rainwater storage modules according to any one of claims 1 to 8 and a second hole plug (5), wherein the second hole plug (5) is matched with the hole plug mounting hole (17), the thickness of the second hole plug (5) is larger than or equal to twice the thickness of the bottom plate (1), and two vertically adjacent plastic rainwater storage modules are detachably mounted in the hole plug mounting hole (17) through the second hole plug (5) and can be spliced.

10. A water storage tank comprising the plastic storm water storage module assembly of claim 9.

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