Plastic drainage plate with high pressure resistance and collapse prevention
By setting "L"-shaped grooves and snap-fit structures on the surface of the drainage board, the problems of unreliable drainage board connection and unstable geotextile fixation are solved, achieving efficient and stable drainage board connection and geotextile fixation, which is suitable for underground engineering and tunnel drainage applications.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU SANDING SOFT BASE MATERIAL CO LTD
- Filing Date
- 2025-06-11
- Publication Date
- 2026-04-17
AI Technical Summary
Existing plastic drainage boards are not securely spliced during connection, making them prone to water seepage, loosening, or misalignment. Furthermore, geotextiles are prone to curling and falling off during backfill compaction, lacking an effective locking and clamping structure.
An "L"-shaped groove is set on the surface of the drainage board body, equipped with a buckle structure of a card plate and a fish fin-shaped plastic card block, combined with a flexible rubber ring and a friction pad to achieve a stable connection between drainage boards, and fix the edge of the geotextile through the cooperation of the card plate and the groove.
It enables rapid and stable connection of drainage boards, ensures the firm fixation of geotextile, improves construction efficiency and the stability of drainage systems, and is suitable for underground engineering and tunnel drainage scenarios.
Smart Images

Figure CN224133711U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of drainage boards, specifically a high-pressure-resistant and anti-collapse plastic drainage board. Background Technology
[0002] Plastic drainage boards improve their resistance to pressure and prevent collapse through the connecting plate and support column at the bottom. The support column is flush with the bottom surface of the plastic drainage board to achieve the effect of preventing collapse. Multiple plastic drainage boards can be placed together for use. However, in the existing technology, they are connected by gluing, which is not reliable, has low installation efficiency, large gaps at the joints, and is prone to water seepage, loosening or misalignment.
[0003] In the prior art, such as a high-compression-resistant anti-collapse plastic drainage board with application number CN202121796778.X, it adopts a fastening plate, a fastening boss and a connecting boss to facilitate seamless connection between adjacent drainage boards. The fastening plate is placed on the board body of the adjacent drainage board, and the fastening boss is sleeved on the connecting boss at the edge of the adjacent drainage board for easy positioning and to provide reliable support for the geotextile at the edge of the drainage board.
[0004] However, in use, it lacks an effective locking and clamping structure, making it difficult to reliably fix the edge geotextile, and it is easy for the geotextile to curl up or fall off during the backfill compaction process. Utility Model Content
[0005] The purpose of this invention is to provide a high-pressure-resistant and anti-collapse plastic drainage board to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, the present invention provides the following technical solution: it includes a drainage board body, a geotextile is laid on the top of the drainage board body, the surface of the drainage board body is provided with multiple sets of slots, the slots are in the shape of an "L", the slots are provided with a buckle structure, a plastic wing plate is fixed to the edge of the geotextile, a friction pad is fixed to the end of the plastic wing plate, and the friction pad is clamped by the buckle structure.
[0007] Preferably, one end of the slot penetrates the side of the drainage board body, and the other end of the slot penetrates the upper surface of the drainage board body. The slots are symmetrically distributed on the four sides about the center of the top surface of the drainage board body, and the slots are arranged in an array along the edge line of the drainage board body.
[0008] Preferably, the buckle structure includes a buckle plate and two sets of plastic buckle blocks, and the buckle structure is distributed on one of the adjacent sides about the center of the top surface of the drainage board body. The buckle plate and the buckle groove correspond one-to-one. The plastic buckle blocks have a fish fin-shaped structure and are symmetrically distributed about the center line of the long side of the buckle plate. The slanted side of the plastic buckle blocks faces outward. The end face size of the buckle plate is smaller than the groove size of the buckle groove. One set of plastic buckle blocks is located on the side where the buckle groove penetrates the upper surface of the drainage board body, and the other set is located on the side wall of the drainage board body. The buckle plate extends from the side wall of the drainage board body.
[0009] Preferably, the inner wall of the card slot is provided with a fixing groove and a displacement groove. The fixing groove is opened at the top of the bottom groove of the card slot, and the displacement groove is opened at the corner of the card slot. The displacement groove is symmetrically distributed on the four sides about the center of the top surface of the drainage board body. The fixing groove is distributed on one of the adjacent sides about the center of the top surface of the drainage board body. A flexible rubber ring is fixed on the upper surface of the card plate. The upper end of the flexible rubber ring is fixed to the top of the fixing groove. The flexible rubber ring has a circular ring structure.
[0010] Preferably, in the installed state, the friction pad is located inside the fixing groove, and the plastic wing plate extends into the inside of the slot.
[0011] Compared with the prior art, the beneficial effects of this utility model are:
[0012] This utility model proposes a high-compression-resistant, anti-collapse plastic drainage board. The edge of the drainage board body is provided with an "L"-shaped slot structure, which is combined with the snap-fit structure of the card plate and the fish fin-shaped plastic card block. The plastic card block on the card plate is inserted into the slot and blocked by the inner wall of the drainage board, which can realize a quick and stable connection between multiple drainage board bodies, improving construction efficiency. At the same time, after the two ends of the card plate are inserted into the fixing groove, the flexible rubber ring is squeezed, which can effectively resist the friction pad of the clamp, thereby firmly fixing the edge of the geotextile covering the drainage board, ensuring smooth drainage and structural stability. It is suitable for various scenarios such as underground engineering, greening drainage and tunnel drainage. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0014] Figure 2 This is a bottom view of the overall structure of this utility model;
[0015] Figure 3 The structure of this utility model Figure 1 Top view;
[0016] Figure 4 The structure of this utility model Figure 3 Sectional view along axis AA;
[0017] Figure 5 The structure of this utility model Figure 4 Enlarged view of point A in the middle;
[0018] Figure 6 This is a schematic diagram of the buckle structure of this utility model;
[0019] Figure 7 This is a front view of the structure of the plastic drainage board of this utility model;
[0020] Figure 8 The structure of this utility model Figure 7 BB-direction sectional view;
[0021] Figure 9 The structure of this utility model Figure 8 Enlarged view of section B in the middle.
[0022] In the diagram: 1. Drainage board body; 2. Connecting plate; 3. Support column; 4. Slot; 5. Fixing slot; 6. Displacement slot; 7. Card plate; 8. Plastic card block; 9. Flexible rubber ring; 10. Geotextile; 11. Plastic wing plate; 12. Friction pad. Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0024] Example 1
[0025] Please see Figures 1-4 This utility model provides a technical solution: a high-compression-resistant and anti-collapse plastic drainage board, including a drainage board body 1, a geotextile 10 laid on the top of the drainage board body 1, a connecting plate 2 fixed at the bottom of the drainage board body 1, a support column 3 fixed in the middle of the bottom surface of the connecting plate 2, the bottom end of the support column 3 being flush with the bottom end of the drainage board body 1, and the connecting plate 2 and the support column 3 being arranged in an array at the bottom end of the drainage board body 1.
[0026] Specifically, according to Figure 2 It can be seen that the bottom of the drainage board body 1 has multiple sets of reinforcement structures evenly distributed to improve the overall compressive strength. The connecting plate 2 and the support column 3 form an array arrangement, which effectively disperses the vertical load, improves the compressive strength and prevents collapse, thereby enhancing the structural stability and anti-collapse ability of the drainage board body 1.
[0027] Example 2
[0028] Please see Figures 4-9Based on Embodiment 1, in order to achieve both connecting multiple drainage boards and fixing the geotextile laid on the surface of the drainage boards, multiple sets of slots 4 are provided on the surface of the drainage board body 1. The slots 4 are L-shaped, with one end penetrating the side of the drainage board body 1 and the other end penetrating the top surface of the drainage board body 1. The slots 4 are symmetrically distributed on the four sides about the center of the top surface of the drainage board body 1, and are arranged in an array along the edge line of the drainage board body 1. The slots 4 are provided with a buckle structure inside, which includes a buckle plate 7 and two sets of plastic buckles 8. The buckle structure is distributed on one of the adjacent sides about the center of the top surface of the drainage board body 1. The buckle plate 7 corresponds one-to-one with the slot 4. The plastic buckles 8 are fin-shaped and are symmetrically distributed about the center line of the long side of the buckle plate 7. The fin-shaped oblique side of the plastic buckles 8 faces outward. The end face size of the buckle plate 7 is smaller than the slot opening of the slot 4. The dimensions are as follows: a set of plastic clips 8 are located on one side of the groove 4 that penetrates the upper surface of the drainage board body 1, and another set is located on the side wall of the drainage board body 1. The clip 7 extends from the side wall of the drainage board body 1. The inner wall of the groove 4 is provided with a fixing groove 5 and a displacement groove 6. The fixing groove 5 is opened at the top of the bottom groove of the groove 4, and the displacement groove 6 is opened at the corner of the groove 4. The displacement groove 6 is symmetrically distributed on the four sides about the center of the top surface of the drainage board body 1. The fixing groove 5 is distributed on one of the adjacent sides about the center of the top surface of the drainage board body 1. A flexible rubber ring 9 is fixed on the upper surface of the clip 7. The upper end of the flexible rubber ring 9 is fixed to the top of the fixing groove 5. The flexible rubber ring 9 has a circular ring structure. A plastic wing plate 11 is fixed to the edge of the geotextile 10. A friction pad 12 is fixed to the end of the plastic wing plate 11, and the friction pad 12 is clamped by the buckle structure. In the installed state, the friction pad 12 is located inside the fixing groove 5, and the plastic wing plate 11 extends into the interior of the groove 4.
[0029] Specifically, each slot 4 is arranged in an array along the edge of the drainage board body 1 and symmetrically about the center of the top surface of the drainage board body 1 to ensure uniform direction and balanced force during connection; the card plate 7 is inserted from the side wall of the drainage board body 1 into the slot 4 of the adjacent drainage board body 1, and a set of plastic card blocks 8 are symmetrically installed on both sides of each card plate 7, according to... Figure 6 It can be seen that the plastic card block 8 has a shark fin-shaped structure, with its hypotenuse facing outwards. Figure 9It is understood that the plastic locking block 8 can smoothly slide into the slot 4 and fit tightly against the inner wall of the slot 4 to form a self-locking structure. When the plastic locking block 8 is inserted, its structure causes the top of the plastic locking block 8 to press down, allowing it to pass through the slot 4. The plastic locking block 8 is made of reinforced polypropylene or other materials that allow for small deformations and rapid recovery, thus making the connection more stable and preventing loosening or detachment. When the card plate 7 is inserted, the flexibility of the flexible rubber ring 9 allows the card plate 7 to move within a small range in the slot 4. The moving groove 6 provides a path for the flexible rubber ring 9. The flexible rubber ring 9 is made of silicone. The geotextile 10 is made of adhesive or other flexible materials. It is used to filter fine particles and prevent drainage blockage. To prevent the geotextile 10 from shifting during use or construction, plastic wing plates 11 are fixed to its edges. Friction pads 12 are installed at the ends of the plastic wing plates 11. When the clamping plate 7 is inserted into the clamping groove 4, the plastic clamping block 8 on the clamping plate 7 presses the friction pad 12 into the fixing groove 5 to form a clamping state, thereby stabilizing the geotextile 10, ensuring that the geotextile 10 is laid on the drainage board body 1, keeping it laid flat, avoiding the geotextile from falling off during use, and improving the overall efficiency and lifespan of the drainage system.
[0030] In use, first arrange multiple drainage board bodies 1 in sequence, then lay geotextile 10 on the drainage board body 1. The friction pad 12 at the bottom of the geotextile 10 is placed at the bottom of the slot 4. The plastic clip 8 of a card 7 is initially located inside the slot 4. Figure 5 As shown, when installing two adjacent drainage board bodies 1, simply align the slot 4 with the plate 7 and insert it along the slot 4 on the side of the drainage board body 1. Due to the action of the flexible rubber ring 9, the plate 7 moves to push the friction pad 12 into the fixing groove 5. One end of the plate 7 fixes the plastic wing plate 12 of the geotextile 10, and the other end similarly inserts the plastic wing plate 12 of the geotextile 10 into the fixing groove 5 on the other side, thus connecting the two drainage board bodies 1 together. After the two drainage board bodies 1 are connected together, due to... The flexibility of the flexible rubber ring 9 enables the locking block 7 to return to its original position, and the plastic locking block 8 to fit against the inner wall of the slot 4. The fin-shaped plastic locking block 8 undergoes a small elastic deformation during insertion and automatically rebounds to fit against the inner wall of the slot 4 after release, thus achieving a firm splicing of adjacent drainage board bodies. Its edges are fixed by the plastic wing plate 11 and the friction pad 12. The friction pad 12 is pressed and clamped by the locking plate 7 and positioned in the fixing groove 5, thereby ensuring that the geotextile is flat, firm and does not shift, completing the splicing of the overall drainage board and the laying of the geotextile.
[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A high-compression-resistant, anti-collapse plastic drainage board, comprising a drainage board body (1), with geotextile (10) laid on top of the drainage board body (1), characterized in that: The surface of the drainage board body (1) has multiple sets of slots (4), the slots (4) are in the shape of "L", the slots (4) are equipped with a buckle structure, the edge of the geotextile (10) is fixed with a plastic wing plate (11), the end of the plastic wing plate (11) is fixed with a friction pad (12), and the friction pad (12) is clamped by the buckle structure.
2. The high compressive strength and anti-collapse plastic drainage board according to claim 1, characterized in that: One end of the slot (4) penetrates the side of the drainage board body (1), and the other end of the slot (4) penetrates the upper surface of the drainage board body (1). The slots (4) are symmetrically distributed on the four sides about the center of the top surface of the drainage board body (1). The slots (4) are arranged in an array along the edge line of the drainage board body (1).
3. The high-compression-resistant, anti-collapse plastic drainage board according to claim 1, characterized in that: The buckle structure includes a buckle plate (7) and two sets of plastic buckle blocks (8). The buckle structure is distributed on one of the adjacent sides about the center of the top surface of the drainage board body (1). The buckle plate (7) corresponds to the buckle groove (4) one by one. The plastic buckle block (8) has a fish fin-shaped structure. The plastic buckle block (8) is symmetrically distributed about the center line of the long side of the buckle plate (7). The fish fin-shaped side of the plastic buckle block (8) is outward. The end face size of the buckle plate (7) is smaller than the groove size of the buckle groove (4). One set of plastic buckle blocks (8) is located on one side of the buckle groove (4) that penetrates the upper surface of the drainage board body (1). The other set is located on the side wall of the drainage board body (1). The buckle plate (7) extends out from the side wall of the drainage board body (1).
4. The high compressive strength and anti-collapse plastic drainage board according to claim 3, characterized in that: The inner wall of the slot (4) is provided with a fixing slot (5) and a shifting slot (6). The fixing slot (5) is located at the top of the bottom slot of the slot (4), and the shifting slot (6) is located at the corner of the slot (4). The shifting slot (6) is symmetrically distributed on the four sides about the center of the top surface of the drainage board body (1). The fixing slot (5) is distributed on one of the adjacent sides about the center of the top surface of the drainage board body (1). A flexible rubber ring (9) is fixed on the upper surface of the card plate (7). The upper end of the flexible rubber ring (9) is fixed to the top of the fixing slot (5). The flexible rubber ring (9) has a circular ring structure.
5. The high compressive strength and anti-collapse plastic drainage board according to claim 4, characterized in that: In the installed state, the friction pad (12) is located inside the fixing groove (5), and the plastic wing plate (11) is inserted into the groove (4).
Citation Information
Patent Citations
High-compression-resistance anti-collapse plastic drainage plate
CN215760063U