Injection molded geocell with directional support

Abstract

The utility model provides a kind of injection moulded geocell of directional support, and hollow cylinder is formed in connecting node position;Support frame is provided in hollow cylinder, and the support frame is used to open and shape the cutting joint strip that extends reversely, first part and second part are respectively arranged on the both sides of support body, and first part and second part are staggered arrangement in height direction, to respectively support the cutting joint strip that opens, form the combination structure of stable strip and support frame, so that connecting node after glue injection is bonded as integrated structure with cutting joint strip and support frame, not only enhance the overall stiffness and bearing capacity of geocell, simultaneously, the interaction performance between it and soil is optimized, effectively improve the reliability and durability of engineering application.

Description

Technical Field

[0001] This utility model relates to the field of civil engineering technology, and more specifically, to a directional support injection-molded geocell. Background Technology

[0002] Geocells are three-dimensional honeycomb-like grid structures formed by connecting high-strength plastic strips, used to reinforce slopes and prevent slope collapse, erosion, and washout. By laying geocells on the slope surface and filling them with soil, gravel, or other fillers, a stable protective layer is formed.

[0003] When subjected to axial tension, geocell strips fracture at the nodes, exhibiting strip-like tearing failure at the fracture surface. The main reason is that riveting requires fixing with rivets, which necessitates drilling holes in the geocell strips. Stress concentration easily occurs at the drilling points, leading to tearing failure of the strips under axial load.

[0004] Therefore, how to improve the structural strength of geocell nodes is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the present invention provides an injection-molded geocell with directional support to improve the structural strength of geocell nodes.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A directionally supported injection-molded geocell has multiple sets of first and second strips with connecting nodes;

[0008] The connection node is cut with multiple slits spaced apart along the height direction, and the strips on both sides of the slits extend in opposite directions, so that the connection node forms a hollow cylinder.

[0009] The hollow cylinder is provided with a support frame that opens and shapes the reverse-extending slit strip. The support frame includes a support body and a strip support part provided on the support body.

[0010] The strip support portion consists of a first part and a second part that support the slit strips extending from both sides of the slit;

[0011] The hollow cylinder is filled with an adhesive that wraps around the strip support portion, and the adhesive extends outside the hollow cylinder and wraps around the first strip and the second strip;

[0012] The first strip, the second strip, and the strip support are fixed together by the colloid to form the connection node.

[0013] Preferably, in the above-mentioned directional support injection-molded geocell, the support body is a strip-shaped support plate extending along the axial direction of the hollow cylinder, and the first part and the second part are the two side edges of the support plate in the width direction.

[0014] Preferably, in the above-mentioned directional support injection-molded geocell, the support plate has a main body extending to both axial ends of the hollow cylinder, and the main body has wide sides that support the protruding cut strips respectively.

[0015] Preferably, in the above-mentioned directional support injection-molded geocell, the support plate has a plurality of injection holes extending through its thickness direction distributed along the axial direction of the hollow cylinder.

[0016] Preferably, in the above-mentioned directional support injection-molded geocell, the top of the support plate has hanging ears that overlap the top slit strip.

[0017] Preferably, in the above-mentioned directional support injection-molded geocell, the support plate is a strip-shaped support plate extending along the axial direction of the hollow cylinder, and the first part and the second part are strip support plates distributed on both sides of the width direction of the support plate, and the strip support plates are arranged basically perpendicular to the support plate.

[0018] Preferably, in the above-mentioned directional support injection-molded geocell, the strip support plate has a glue passage through its thickness direction in the middle.

[0019] Preferably, in the above-mentioned directional support injection-molded geocell, the connecting node includes a hollow cylinder; or the connecting node includes two or more hollow cylinders, and the support frame includes a support body extending into each of the hollow cylinders, and a connecting top plate spanning two adjacent hollow cylinders to connect the two adjacent support bodies.

[0020] Preferably, in the above-mentioned directional support injection-molded geocell, the first strip and the second strip are HDPE strips, PP strips or PET strips;

[0021] The connecting node has an injection-molded body that encloses the first strip, the second strip, and the hollow cylinder as a whole. The injection-molded body is formed by injection molding one or more materials selected from TPE, TPR, TPU, EVA, EMA, EEA, PVC, PP, PE, HDPE, SBS, ABS, PA6, PA12, TPEE, and EBA.

[0022] Preferably, in the above-mentioned directional support injection-molded geocell, the first strip and the second strip are closely fitted in the thickness direction; or, the first strip and the second strip have an opening angle arranged by the connection node position, the angle of the opening angle being 0°-160°.

[0023] The directional support injection-molded geocell provided by this utility model has multiple sets of first strips and second strips forming connecting nodes; multiple slits are cut at the connecting node positions and spaced apart along the height direction, with the strips on both sides of the slits extending in opposite directions, so that the connecting node positions form hollow cylinders; the geocell has a honeycomb mesh structure formed by multiple intersecting strips, each grid has a first strip and a second strip, and two strips are closely attached to form a connecting node, and multiple slits are set on the strips of the connecting node and spaced evenly along the height direction. These slits make the strips at the node position form parallel multiple slit strips, and the adjacent slit strips extend in opposite directions, thereby forming a stable hollow cylindrical structure in the central area of ​​the node.

[0024] The hollow cylinder is equipped with a support frame that opens and shapes the slit strips extending in the opposite direction. The support frame includes a support body and a strip support portion disposed on the support body. The strip support portion includes a first part and a second part respectively arranged at both ends of the slit strip's extension direction. Glue fills the hollow cylinder and wraps the strip support portion, and the glue extends outside the hollow cylinder and wraps the first strip and the second strip. The first strip, the second strip, and the strip support portion are fixedly connected by the glue to form a connection node. The strips are made of flexible material. After the connecting nodes are opened, the hollow cylinder is radially opened and shaped by inserting a support frame. At the same time, due to the slit structure in the height direction of the connecting nodes, the opened slit strips only have strips on one side at the same height. The first part and the second part are respectively set on both sides of the support body, and the first part and the second part are staggered in the height direction to support the opened slit strips separately, forming a stable combination structure of strips and support frames. This allows the connecting nodes after glue injection to bond the slit strips and support frames into a whole structure, which not only enhances the overall stiffness and bearing capacity of the geocell, but also optimizes its interaction performance with the soil, effectively improving the reliability and durability of engineering applications. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1A structural diagram showing the nodal locations of the injection-molded geocell with directional support provided in this application;

[0027] Figure 2 This is a schematic diagram of the first type of node structure of the geocell provided in this embodiment;

[0028] Figure 3 This is a schematic diagram of the second type of node structure for geocells provided in this embodiment;

[0029] Figure 4 This is a schematic diagram of the first type of support frame structure provided in this embodiment;

[0030] Figure 5 This is a schematic diagram of the second type of support frame structure provided in this embodiment;

[0031] Figure 6 This is a schematic diagram of the third type of support frame structure provided in this embodiment;

[0032] Figure 7 for Figure 6 A schematic diagram of the assembly of the third type of support frame structure. Detailed Implementation

[0033] This utility model discloses an injection-molded geocell with directional support, which improves the structural strength of the geocell nodes.

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0035] like Figures 1-3 As shown, Figure 1 A structural diagram showing the nodal locations of the injection-molded geocell with directional support provided in this application; Figure 2 This is a schematic diagram of the first type of node structure for geocells. Figure 3 This is a schematic diagram of the second type of node structure for geocells.

[0036] This embodiment provides a directional support injection-molded geocell with multiple sets of first strips 1 and second strips 2 forming connecting nodes 3. Multiple slits are cut at the connecting nodes 3 at intervals along the height direction, with the strips on both sides of the slits extending in opposite directions, forming a hollow cylinder 5 at the connecting node 3. The geocell has a honeycomb mesh structure formed by multiple intersecting strips. Each mesh has a first strip 1 and a second strip 2, and two strips are closely attached to form a connecting node 3. Multiple slits are set on the strips of the connecting node 3 at even intervals along the height direction. These slits form parallel multiple slit strips 4 at the node, with adjacent slit strips 4 extending in opposite directions, thereby forming a stable hollow cylindrical structure in the central region of the node.

[0037] The connecting node 3 has multiple slits spaced apart along the node axis. The first strip 1 and the second strip 2 are arranged close to each other at the connecting node 3. From the perspective of the strip's long strip structure, the node axis is the width direction of the strip. Each slit penetrates the thickness direction of the strip and is formed on the strip, and the multiple slits are spaced apart along the node axis. After the slit action is performed on the strip, the strip is divided into multiple layers in the width direction by the slits. The strip portions on both sides of the slit are bent along the thickness direction of the strip to form a first bent portion 41 and a second bent portion 42. The first bent portion 41 and the second bent portion 42 are staggered and overlapped. From one side of the node axis, they together form a hollow cylinder 5 extending along the node axis.

[0038] The hollow cylinder 5 is provided with a support frame 6 for opening and shaping the reverse-extending slit strip 4. The support frame 6 includes a support body 61 and a strip support part 62 provided on the support body. The strip support part 62 includes a first part and a second part respectively arranged at both ends of the extension direction of the slit strip 4. The colloid is filled in the hollow cylinder 5 and wraps the support frame 6, and the colloid extends to the outside of the hollow cylinder and wraps the first strip and the second strip. The first strip 1, the second strip 2 and the support frame 6 are fixedly connected by the colloid to form a connection node. The strip is made of flexible material. After the connecting node 3 is opened, the hollow cylinder 5 is radially opened and shaped by the installation of the support frame 6. At the same time, due to the slit structure in the height direction of the connecting node 3, the opened slit strip 4 only has a strip on one side at the same height. The first part and the second part of the strip support part 62 are respectively set on both sides of the support body 61, and the first part and the second part are staggered in the height direction to support the opened slit strip 4 respectively, forming a stable combination structure of strip and support frame 6. After the glue is injected, the connecting node 3 will bond the slit strip 4 and the support frame 6 into a whole structure, which not only enhances the overall rigidity and bearing capacity of the geocell, but also optimizes its interaction performance with the soil, effectively improving the reliability and durability of engineering applications.

[0039] The hollow cylinder 5 is encased in a colloid, which forms an internal solidified core within the hollow cylinder, creating internal support. The hollow cylinder 5 is also encased in a colloid, which indirectly bonds the first strip 1 and the second strip 2 to the support frame 6. The colloid penetrates the hollow cylinder 5, forming a continuous structure that continuously transmits the tensile force of the strips and the supporting force of the support components, ensuring that the joints are stressed as a whole rather than locally.

[0040] like Figure 4 As shown, Figure 4 This is a schematic diagram of the first type of support frame structure provided in this embodiment.

[0041] In a specific embodiment of this case, the support body 61 is a strip-shaped support plate, and the first part and the second part are the two side edges 62 in the width direction of the support plate. The support frame 6 adopts a strip-shaped structure. The support plate supports the cut strip 4 after the cut at the connection node 3 in opposite directions. The strip-shaped support plate extends vertically into the hollow cylinder 5. The width direction of the support plate is the same as the extension direction of the cut strip 4. Therefore, the support plate abuts against the cut strip 4 that forms the hollow cylinder 5 through the edge in the width direction. The two side edges 62 in the width direction of the support plate are the first part and the second part that support the cut strip.

[0042] Furthermore, the support plate has multiple injection holes 64 extending through its thickness direction along the axial direction of the hollow cylinder 5. After the support plate supports the slit strip 4, it wraps the connecting node 3 by injection. By setting multiple injection holes 64 in the thickness direction of the support plate, the glue is filled evenly in the hollow cylinder 5 during the glue filling process. The glue forms connection points between the glue and the support plate through the multiple injection holes 64, so that the glue and the support plate form an interlocking structure, which improves the connection strength between the glue and the support plate, and thus improves the strength of the entire connecting node.

[0043] Furthermore, the top of the support plate extends with hanging ears 63 that overlap the top slit strip 4. During the glue injection process, the support frame 6 needs to be pre-arranged inside the hollow cylinder 5. Since the plate structure support frame 6 only abuts against the open slit strip 4 on both sides in the width direction, the support frame 6 is prone to tipping over inside the hollow cylinder 5 when assembling parts in the mold or being squeezed by the glue. By setting hanging ears 63 on the top of the support plate, the hanging ears 63 extend from the top of the support plate in the width direction. The support frame 6 can overlap the slit strip 4 through the hanging ears 63 on either side in the width direction, which facilitates the positioning of the strip and the support frame 6 in the mold.

[0044] like Figure 5 As shown, Figure 5 This is a schematic diagram of the second type of support frame structure provided in this embodiment.

[0045] In another specific embodiment of this case, the support plate is a strip-shaped support plate. The first part and the second part are strip support plates 621 distributed on both sides of the width direction of the support plate, and the strip support plates 621 are arranged basically perpendicular to the support plate. It can be understood that "basically perpendicular" means that the strip support plates 621 and the support plate are arranged at a 90° angle, or with a slight skew angle (such as a skew angle of no more than 5°), as long as the support function can be achieved. In other embodiments, the skew angle can also be 3°, 5°, etc. The support frame 6 adopts a strip-shaped support plate. At the same time, the support frame 6 uses strip support plates 621 to abut and position the opened slit strip 4. The strip support plates 621 are transverse support plates, which are basically the same width as the slit strip 4, so that the support plate opens the slit strip 4 radially. The strip support plates 621 maintain the opened slit strip 4 and prevent the slit strip 4 from collapsing inward during the subsequent glue injection process. Meanwhile, in conjunction with the structure of the cut strip 4 after being staggered and opened in the height direction, the strip support plate 621 is configured to include two parts located in the width direction of the support plate, and the first part and the second part present the same staggered arrangement structure in the height direction as the cut strip, so as to present a one-to-one correspondence with the cut strip.

[0046] Furthermore, the strip support plate 621 has a glue inlet 65 extending through its thickness direction in the middle. The strip support plate 621 adheres to the slit strip 4, and the adhesive tightly wraps the slit strip 4 and the strip support plate 621, preventing the adhesive from flowing between the slit strip 4 and the strip support plate 621. The glue inlet 65 in the middle of the strip support plate 621 allows the adhesive to form a multi-point adhesive structure around the circumference of the strip support plate 621 and at the glue inlet 65 in the middle of the strip support plate 621, improving the bonding strength between the strip support plate 621 and the slit strip 4. The support plate can also have glue injection holes extending through its thickness direction to further improve the adhesive's wrapping strength around the connection nodes.

[0047] In one specific embodiment of this case, the connecting node 3 includes a hollow cylinder 5. Depending on the application environment of the geocell, a connecting node with a hollow cylinder 5 is used, and the connecting node can be strengthened by an independent support frame 6.

[0048] like Figure 6 and Figure 7 As shown, Figure 6 This is a schematic diagram of the third type of support frame structure provided in this embodiment; Figure 7 for Figure 6 A schematic diagram of the assembly of the third type of support frame structure.

[0049] In geocell applications requiring higher structural strength, the connection node 3 is constructed using an arrangement of two or more hollow cylinders 5. Taking a node structure with two hollow cylinders 5 as an example, the support frame 6 includes a support body extending into each hollow cylinder 5, and a connecting top plate 66 spanning two adjacent hollow cylinders to connect the two adjacent support bodies. For structures with two or more hollow cylinders, the support frame adopts a parallel structure, using a strip-shaped support frame, a strip-plate structure support frame, or a coiled structure support frame filled into the hollow cylinder. A connecting top plate 66 is installed on the top of the support frame, connecting the independent support frames into a single structure, thereby achieving enhanced support for the connection node of the multi-hollow cylinder structure.

[0050] Furthermore, the support plate has a main body extending to both axial ends of the hollow cylinder, and the main body has wide side portions that respectively support the protruding slit strips. The support body 61 can have the main body as the main part, and the wide side portions on both sides in the width direction can be set independently, or when the support body 61 is a flat plate structure, the long side of the plate can form the first part and the second part.

[0051] When the support plate is a flat plate structure, its two long sides in the width direction can be toothed structures such as sawtooth structures or wall structures. The toothed edges and the colloid filled in the hollow cylinder form an interlocking and fixed connection. The teeth form a mechanical lock on the colloid in the axial direction to prevent the colloid from sliding relative to the support plate in the axial direction after curing, thereby improving the axial pull-out strength of the connection node.

[0052] The cross-section of the main body in the thickness direction can be of uniform thickness. A main body with a uniform thickness cross-section has a wide side whose radially outer surface is an arc or plane adapted to the inner wall of the hollow cylinder. The wide side forms a surface contact with the inner wall of the hollow cylinder to uniformly press the cut strip against the inner wall. In another embodiment, the cross-section of the main body in the thickness direction is drum-shaped. The drum-shaped cross-section of the main body has a gradually changing thickness, thicker in the middle and thinner at the edges. The middle part is the geometric center region of the main body, and the edges are the regions where the wide side is located. The drum-shaped cross-section provides sufficient bending stiffness in the middle of the main body.

[0053] Of course, the main body can also be designed with a thicker perimeter and a thinner middle section. An injection hole is set in the middle of the main body, the thicker perimeter ensures structural strength, and the thinner middle section provides bonding strength for the adhesive.

[0054] In a specific embodiment of this case, the first strip 1 and the second strip 2 are HDPE strips, PP strips, or PET strips; the connecting node 3 has an injection-molded colloid that wraps the first strip 1, the second strip 2, and the support frame 6 into one unit. The injection-molded colloid is formed by injection molding one or more materials selected from TPE, TPR, TPU, EVA, EMA, EEA, PVC, PP, PE, HDPE, SBS, ABS, PA6, PA12, TPEE, and EBA.

[0055] The colloid is an injection molding colloid. During the injection molding process, the colloid is in a molten fluid state. The melting temperature of the injection molding material should be lower than the melting temperature of the strip to ensure the basic shape of the first strip 1 and the second strip 2. Of course, the surfaces of the first strip 1 and the second strip 2 can undergo a surface micro-melting state due to the melting temperature of the colloid, thereby improving the bonding ability between the colloid and the strip.

[0056] Meanwhile, the strip possesses certain elastic properties and is made of high-strength materials such as polypropylene (PP) or polyethylene (PE). These materials exhibit good wear resistance, chemical stability, resistance to photo-oxidative aging, and acid and alkali resistance, making them suitable for various soil conditions, including deserts. The strip has an internal reinforcing core, which can be made of steel strip, steel wire, polypropylene tensile tape, polyethylene terephthalate tensile tape, or fiberglass, etc. The purpose of the reinforcing core is to improve the overall tensile strength of the strip and enhance its welding and bonding performance.

[0057] Specifically, the first strip 1 and the second strip 2 are HDPE strips, PP strips, or PET strips. HDPE (high-density polyethylene) strips have good flexibility and chemical resistance, lower tensile strength, but better ductility, making them suitable for projects requiring both ductility and flexibility, such as roadbed reinforcement. PP (polypropylene) strips have higher tensile strength but are more brittle and have poorer ductility, making them suitable for projects requiring high strength, but their brittleness must be considered. PET (polyester) strips combine strength and ductility, offering good overall performance, making them suitable for projects with high overall performance requirements. By using the above-mentioned nodes to wrap the gel structure with strips of different materials, the overall structural performance of the geocell is improved.

[0058] The colloid is formed by injection molding from one or more of the following materials: TPE, TPR, TPU, EVA, EMA, EEA, PVC, PP, PE, HDPE, SBS, ABS, PA6, PA12, TPEE, and EBA. The colloid can be injection molded using one or more of the following materials: TPE (thermoplastic elastomer), TPR (thermoplastic rubber), TPU (thermoplastic polyurethane), EVA (ethylene-vinyl acetate copolymer), EMA (ethylene-methacrylic acid copolymer), EEA (ethylene-ethyl acrylate copolymer), PVC (polyvinyl chloride), PP (polypropylene), PE (polyethylene), HDPE (high-density polyethylene), SBS (styrene-butadiene-styrene block copolymer), ABS (acrylonitrile-butadiene-styrene copolymer), PA6 (polyamide 6), PA12 (polyamide 12), and TPEE (thermoplastic polyester elastomer).

[0059] In one specific embodiment of this case, the first strip 1 and the second strip 2 are fitted together in the thickness direction; or, the first strip 1 and the second strip 2 have an opening angle arranged by the connection node position, and the angle of the opening angle is 0°-160°.

[0060] Geocells form triangular or polygonal honeycomb structures. The first strip 1 and the second strip 2, after being wrapped in colloid, can be in a tightly fitted state or a predetermined opening angle can be reserved. The fitted strip structure increases the tensile strength of the strips and connecting nodes, and the reserved opening angle facilitates the construction and shaping of the honeycomb structure.

[0061] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A directionally supported injection-molded geocell, characterized in that, It has multiple sets of first and second strips with connecting nodes; The connection node is cut with multiple slits spaced apart along the height direction, and the slit strips on both sides of the slits extend in opposite directions, so that the connection node forms a hollow cylinder. The hollow cylinder is provided with a support frame that opens and shapes the reverse-extending slit strip. The support frame includes a support body and a strip support part provided on the support body. The strip support includes a first part and a second part that support the slit strips extending from both sides of the slit, respectively. The hollow cylinder is filled with an adhesive that wraps around the strip support portion, and the adhesive extends outside the hollow cylinder and wraps around the first strip and the second strip; The first strip, the second strip, and the strip support are fixed together by the colloid to form the connection node.

2. The directionally supported injection-molded geocell according to claim 1, characterized in that, The support body is a strip-shaped support plate extending along the axial direction of the hollow cylinder, and the first part and the second part are the two side edges of the support plate in the width direction.

3. The directionally supported injection-molded geocell according to claim 2, characterized in that, The support plate has a main body extending to both axial ends of the hollow cylinder, and the main body has wide sides that support the protruding slit strips respectively.

4. The directionally supported injection-molded geocell according to claim 2, characterized in that, The support plate has multiple injection holes that penetrate the thickness direction of the hollow cylinder along the axial direction.

5. The directionally supported injection-molded geocell according to claim 4, characterized in that, The top of the support plate has a hanging ear that overlaps the slit strip.

6. The directionally supported injection-molded geocell according to claim 2, characterized in that, The support plate is a strip-shaped support plate extending along the axial direction of the hollow cylinder. The first part and the second part are strip support plates distributed on both sides of the width direction of the support plate, and the strip support plates are arranged basically perpendicular to the support plate.

7. The directionally supported injection-molded geocell according to claim 6, characterized in that, The strip tray has a glue passage in the middle that extends through its thickness direction.

8. The directional-supported injection-molded geocell according to any one of claims 1-7, characterized in that, The connection node includes a hollow cylinder; or The connection node includes two or more hollow cylinders, and the support frame includes a support body extending into each hollow cylinder, and a connecting top plate spanning two adjacent hollow cylinders to connect the two adjacent support bodies.

9. The directionally supported injection-molded geocell according to claim 8, characterized in that, The first and second strips are HDPE strips, PP strips, or PET strips; The connecting node has an injection-molded body that encapsulates the first strip, the second strip, and the hollow cylinder as a single unit.

10. The directionally supported injection-molded geocell according to claim 8, characterized in that, The first strip and the second strip are fitted together tightly in the thickness direction; or, The first strip and the second strip have an opening angle between them, which is set by the location of the connecting node, and the opening angle is between 0° and 160°.

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