Earthwork standard room, node structure of earthwork standard room, manufacturing method of earthwork standard room and pouring mold

Abstract

The invention provides an earthwork standard room and a node structure thereof, a manufacturing method of the earthwork standard room and a pouring mould, the earthwork standard room comprises a first strip and a second strip, a connecting node is arranged between the first strip and the second strip, the node is formed by attaching strips with preset length, and the first strip and the second strip are arranged along the length direction of the strips. Each node is provided with a first connection area and a second connection area which are distributed at the two ends of the length, and a strip between the first connection area and the second connection area is divided into multiple layers through separation seams and stretches out in a staggered mode in the thickness direction to form a cavity channel. And the nodes are wrapped by colloid. The colloid is poured into the cavity channel in the filling process and wraps the first connecting area, the second connecting area and the periphery of the cavity channel, and the joints and the colloid form a multi-layer connecting structure, so that the earthwork standard room obtains higher connecting strength at the joint positions, the first strip and the second strip are not prone to stripping at the joint positions, and therefore the connecting strength of the earthwork standard room is improved. And the tensile capacity and the shearing strength of the geocell are greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering materials, and more specifically, to a geocell and its node structure, a manufacturing method of the geocell, and a casting mold. Background Art

[0002] A geocell, a net structure made of high-strength HDPE wide bands through strong connection, can be easily folded, and when in use, it can be unfolded and filled with earth and stone or concrete materials to construct a structure with significant lateral restraint and large stiffness.

[0003] The geocell forms a three-dimensional honeycomb structure through the connection of geogrid strips, which can provide more effective circumferential restraint for fillers such as coarse sand and gravel, thereby significantly improving the strength and bearing capacity of the structure and reducing settlement. This kind of restraint is also called the "hoop effect".

[0004] The connection of geogrid strips usually includes three forms: welding, plugging, and riveting. For the geocell strips with welded nodes, when subjected to axial tensile force, the HDPE geocell strips gradually elongate, then show obvious necking deformation, and finally fracture and fail at the welded nodes. The main reason is that the welding process will cause damage to the geocell strips near the nodes, thus forming weak points.

[0005] For the geocell strips with plug-in nodes, when subjected to axial tensile force, the main body that plays a role is the strips on the same base material, and the strips have significant stress sensitivity, that is, during the tensile process, once stress concentration occurs at a certain point on the surface of the strip, microcracks will be generated in the strip immediately, and then fracture will occur quickly.

[0006] For the geocell strips with riveted nodes, when subjected to axial tensile force, they fracture and fail at the nodes, and the fracture surface shows strip-shaped tearing failure. The main reason is that riveting needs to be fixed by rivets, that is, holes need to be drilled in the geocell strips, and stress concentration is likely to occur at the drilled holes, so the strips will show tearing failure when subjected to axial force.

[0007] Therefore, how to improve the structural strength of the geocell nodes is an urgent problem to be solved by those skilled in the art at present. Summary of the Invention

[0008] In view of this, the present invention provides a geocell and its node structure, a manufacturing method of the geocell, and a casting mold to improve the structural strength of the geocell nodes.

[0009] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0010] A node structure of a geocell, comprising a first strip and a second strip, with a connecting node provided between the first strip and the second strip.

[0011] The node is formed by bonding strips of a predetermined length. Along the length direction of the strip, the node has a first junction area and a second junction area distributed at both ends of the length. The strip between the first junction area and the second junction area is divided into multiple layers by a separation seam and extends alternately in the thickness direction to form a cavity channel; the node is wrapped by a colloid.

[0012] Preferably, in the above-mentioned node structure of the geocell, the node is formed by bonding the first strip and the second strip of a predetermined length. The node has a first junction area and a second junction area, and the first junction area and the second junction area are respectively located at both ends of the bonding length of the first strip and the second strip.

[0013] Preferably, in the above-mentioned node structure of the geocell, the node further has a transition connection part located before the first junction area and the second junction area. The transition connection part has multiple separation seams arranged at intervals along the height direction of the node. The transition connection part is divided into multiple layered structures by the multiple separation seams, and the multiple layered structures are bent and extend alternately in the thickness direction; a cavity channel is formed between the multiple layered structures.

[0014] Preferably, in the above-mentioned node structure of the geocell, the colloid is a strengthening colloid that wraps the first junction area and the second junction area and fills the cavity channel.

[0015] Preferably, in the above-mentioned node structure of the geocell, the colloid is an overall wrapping colloid that fills the inside and outside of the node and has an arc-shaped outer surface structure.

[0016] Preferably, in the above-mentioned node structure of the geocell, the colloid is arranged to shape the extending directions of the first strip and the second strip, and a predetermined angle is formed between the first strip and the second strip.

[0017] Preferably, in the above-mentioned node structure of the geocell, the predetermined angle is 0° - 135°.

[0018] Preferably, in the above-mentioned node structure of the geocell, the predetermined angle is 0° - 90°.

[0019] Preferably, in the above-mentioned node structure of the geocell, a central embedded part arranged along the height direction of the node is embedded in the cavity channel.

[0020] Preferably, in the node structure of the geocell, the central embedded part includes a vertically extending rod portion, and a transverse portion is arranged at the top of the rod portion; the central embedded part is a T-shaped metal embedded part.

[0021] Preferably, in the node structure of the geocell, a clamping cavity for clamping the first junction area and the second junction area respectively is formed in the colloid;

[0022] A clamping fixture for clamping the first strip and the second strip is arranged in the clamping cavity, and the clamping fixture simultaneously maintains a cavity channel formed by a transition connection portion between the first intersection area and the second intersection area;

[0023] The clamping fixture is withdrawn after the colloid injection molding is completed.

[0024] Preferably, in the node structure of the geocell, a clamping pin is embedded in the cavity channel, and the clamping pin comprises a group of clamping arms respectively close to the first junction area and the second junction area; the clamping pin is wrapped in the colloid.

[0025] Preferably, in the node structure of the geocell, the mounting pin is a U-shaped mounting pin.

[0026] Preferably, in the node structure of the above-mentioned geocell, a locking pin is also installed in the clamping cavity of the first intersection area and the clamping cavity of the second intersection area, and the locking pin has a group of locking arms that press the first strip and the second strip along the thickness direction.

[0027] Preferably, in the node structure of the geocell, the first strip and the second strip are HDPE strips, PP strips or PET strips.

[0028] Preferably, in the node structure of the above-mentioned geocell, the colloid is formed by injection molding of one or more materials selected from the group consisting of TPE, TPR, TPU, EVA, EMA, EEA, PVC, PP, PE, HDPE, SBS, ABS, PA6, PA12, TPEE, and EBA.

[0029] A geocell comprises a plurality of strips arranged along the thickness direction of the strips, a plurality of nodes are formed between two adjacent strips, and the nodes have the node structure of the geocell as described in any one of the above items.

[0030] Preferably, in the above geocell, a plurality of the strips are separated by the nodes to form a plurality of cells, and the cross section of the cell along the height direction is a triangle or a quadrilateral.

[0031] Preferably, in the above geocell, a cavity channel is formed at each of the node positions, and the separation seam is a cut seam cut along the thickness direction when two adjacent strips are attached and in contact with each other;

[0032] The strips of the same layer separated by the cut seam extend in the same direction.

[0033] Preferably, in the above geocell, both ends of the separation seam in the length direction extend to the inner sides of the first junction area and the second junction area of the node.

[0034] A manufacturing method of a geocell, used to prepare a geocell having the node structure of the geocell as described above, includes the steps:

[0035] Closely arrange the first strip and the second strip;

[0036] Locate the node positions of the first strip and the second strip, and prepare a plurality of separation seams along the height direction of the node positions;

[0037] Clamp the first junction area and the second junction area at both ends of the node position in the length direction;

[0038] Open the strips at the node position in a staggered manner along the direction of the separation seam to form a cavity channel;

[0039] Arrange clamping pins in the cavity channel;

[0040] Pour a colloid at the node position, and the colloid wraps the node position;

[0041] Wherein, the colloid wraps the first junction area and the second junction area, and determines the angle of the included angle between the first strip and the second strip; the colloid is filled in the cavity channel, wraps the clamping pins, and shapes the open state of the strips at the node position.

[0042] Preferably, in the above manufacturing method of the geocell, the separation seam includes a plurality of cut seams evenly distributed along the height direction of the first strip and the second strip.

[0043] Preferably, in the above manufacturing method of the geocell, the cross section of the colloid is elliptical, and the first junction area and the second junction area are respectively located at the two focal positions of the ellipse.

[0044] Preferably, in the above manufacturing method of the geocell, the first strip and the second strip are arranged at a predetermined angle in the extending direction.

[0045] Preferably, in the above manufacturing method of the geocell, the predetermined angle is 0° - 135°.

[0046] Preferably, in the above manufacturing method of the geocell, the geocell includes multiple strips, and the node positions include multiple ones located between two adjacent strips.

[0047] Preferably, in the above manufacturing method of the geocell, the geocell is separated by multiple strips and multiple nodes to form multiple cells, and the cross-section of the cell is triangular or polygonal.

[0048] Preferably, in the above manufacturing method of the geocell, the colloid is injection-molded from one or more materials among PE, TPR, TPU, EVA, EMA, EEA, PVC, PP, PE, HDPE, SBS, ABS, PA6, PA12, TPEE, and EBA.

[0049] Preferably, in the above manufacturing method of the geocell, a plurality of ejecting devices are arranged on both sides in the thickness direction of the node position. The plurality of ejecting devices eject alternately along the thickness direction of the node position, so that the node position opens alternately along the separation seam; the plurality of ejecting devices withdraw after the colloid pouring is completed.

[0050] A manufacturing method of a geocell for preparing a geocell having the node structure of the geocell as described above, including the steps:

[0051] Closely arrange the first strip and the second strip;

[0052] Locate the node positions of the first strip and the second strip, and prepare multiple separation seams along the height direction of the node positions;

[0053] Open the strips at the node positions alternately along the direction of the separation seam to form a cavity channel;

[0054] Arrange a central embedded part in the cavity channel;

[0055] Pour colloid into the node position, and the colloid wraps the node position;

[0056] Wherein, the colloid wraps the first junction area and the second junction area to fix the angle between the first strip and the second strip; the colloid fills the cavity channel, wraps the central embedded part, and shapes the open state of the strips at the node position.

[0057] A geocell pouring mold for pouring colloid for the node structure of the geocell as described above, including:

[0058] A mold body, in the middle of which there is a casting cavity for casting the node positions of the first strip and the second strip, and a clamping cavity for clamping the connecting ends of the nodes of the first strip and the second strip;

[0059] On the mold body, there are a first clamping device and a second clamping device that can extend into the casting cavity and clamp the first intersection area and the second intersection area of the node position respectively;

[0060] In the mold body, there is also an ejection device for ejecting and opening the node position along the thickness direction to form a cavity channel.

[0061] Preferably, in the above geogrid casting mold, the clamping cavity includes a first cavity and a second cavity for clamping the first strip along the thickness direction. The first cavity and the second cavity are respectively communicated with the casting cavity and clamp the two extending ends in the length direction of the first strip.

[0062] Preferably, in the above geogrid casting mold, the clamping cavity further includes a third cavity and a fourth cavity for clamping the second strip along the thickness direction. The third cavity and the fourth cavity are respectively communicated with the casting cavity and clamp the two extending ends in the length direction of the second strip.

[0063] Preferably, in the above geogrid casting mold, the mold body includes a left fixed angle module and a right fixed angle module located between the included angle of the extending directions of the first strip and the second strip. The left fixed angle module and the right fixed angle module are arranged oppositely and are respectively located at both ends in the length direction of the node position;

[0064] It also includes an upper fixed angle module and a lower fixed angle module respectively located on both sides of the first strip and the second strip in the thickness direction;

[0065] The clamping cavity is located at the adjacent positions of the left fixed angle module, the upper fixed angle module, the right fixed angle module and the lower fixed angle module.

[0066] Preferably, in the above geogrid casting mold, the first clamping device and the second clamping device respectively clamp both sides of the first strip and the second strip attached in the thickness direction. When the ejection device ejects and opens the node position, the first strip and the second strip can slide between the first clamping device and the second clamping device.

[0067] Preferably, in the above geogrid casting mold, multiple cutting slits are processed in the area where the first strip and the second strip are attached to form the node position. The node position is divided into multiple layered structures by the multiple cutting slits;

[0068] The ejector device includes a plurality of ejector pins corresponding to the plurality of layered structures and arranged staggered up and down.

[0069] Preferably, in the above geocell casting mold, a plurality of the ejector pins are respectively arranged on the upper fixed angle module and the lower fixed angle module.

[0070] Preferably, in the above geocell casting mold, the mold body further has a first clamping device and a second clamping device that can be telescopically arranged in the casting cavity. The first clamping device and the second clamping device respectively clamp the first junction area and the second junction area at the node position.

[0071] An ejector device is further arranged in the mold body, and the ejector device ejects the node position in the thickness direction.

[0072] Preferably, in the above geocell casting mold, the ejecting end face of the ejector pin is an arc-shaped ejecting end face.

[0073] Preferably, in the above geocell casting mold, the included angle between the first cavity and the third cavity is 0° - 135°; the included angle between the second cavity and the fourth cavity is 0° - 135°.

[0074] Preferably, in the above geocell casting mold, the first cavity and the second cavity are symmetrically arranged; the third cavity and the fourth cavity are symmetrically arranged.

[0075] A geocell casting mold for colloidal casting of the node structure of the geocell as described above, includes:

[0076] A mold body, in the middle of the mold body, there is a casting cavity for casting the node position of the first strip and the second strip, and a clamping cavity for clamping the node connection ends of the first strip and the second strip.

[0077] An ejector device for ejecting and expanding in the thickness direction at the node position to form a cavity channel is further arranged in the mold body.

[0078] A plurality of cutting slits are processed in the area where the first strip and the second strip are attached to form the node position. The ejector device includes multi-layered layered ejector pins that eject the node from the cutting slit position. The multi-layered layered ejector pins are arranged staggered up and down. Each layer of the layered ejector pins includes two fork-shaped ejector pins arranged in parallel, and a central channel for the central embedded part to pass through is formed between the two fork-shaped ejector pins.

[0079] The node structure of the geocell provided by this application includes a first strip and a second strip. A connection node is provided between the first strip and the second strip. The node is formed by bonding strips of a predetermined length. Along the length direction of the strip, the node has a first junction area and a second junction area distributed at both ends of the length. The strip between the first junction area and the second junction area is divided into multiple layers by a separation seam and extends alternately in the thickness direction to form a cavity channel; the node is wrapped by a colloid. The node of the geocell is formed by bonding and connecting two adjacent strips in the thickness direction. At the same time, the connection node between the first strip and the second strip is set to have a node structure of a predetermined length. In the length direction of the node, the first strip and the second strip can form a first junction area and a second junction area that are bonded to each other at both ends along the length direction. Further, through the node structure of a predetermined length, the node between the first junction area and the second junction area adopts an open structure. Specifically, the node between the first junction area and the second junction area has a double-layer structure. Multiple separation seams are cut on the strips of the double-layer structure. The separation seams extend along the length direction of the strip. The strip is divided into multiple layers in the height direction. The multiple-layer strip structure is alternately opened in the thickness direction. Then, in the height direction, the strip between the first junction area and the second junction area encloses a vertical cavity channel. The node is wrapped by a colloid. During the filling process of the colloid, it is poured into the cavity channel and wraps around the outer periphery of the first junction area, the second junction area, and the cavity channel. The node and the colloid form a multi-layer connection structure, enabling the geocell to obtain higher connection strength at the node position. The first strip and the second strip are not easily peeled off at the node position, and the tensile capacity and shear strength of the geocell are both greatly improved.

[0080] Based on the above node structure of the geocell, a geocell and a manufacturing method of the geocell are also provided, such that all nodes of the geocell adopt the above-mentioned geocell node structure, improving the structural strength, tensile capacity, anti-peeling ability, and shear strength of the geocell.

[0081] This application also provides a pouring mold for the geocell. By clamping the nodes of the geocell and ejecting and opening the multi-layer strips in the pouring chamber, it is possible to inject the pouring colloid into the cavity channel and the outer periphery of the node, realizing the stability of the combination of the geocell node structure and the colloid and ensuring the node strength. Description of the Drawings

[0082] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0083] Figure 1Schematic diagram of the layout structure of the first type of geocell provided by this application;

[0084] Figure 2 Schematic diagram of the layout structure of the second type of geocell provided by this application;

[0085] Figure 3 For Figure 1 Schematic cross-sectional view of the geocell node at location A in

[0086] Figure 4 For Figure 2 Schematic cross-sectional view of the geocell node at location B in

[0087] Figure 5 Front view of the clamping form of the geocell node provided by this application;

[0088] Figure 6 For Figure 5 Axonometric view of the clamping form of the geocell node;

[0089] Figure 7 Structural diagram of the layout of the first type of embedded part of the geocell node provided by this application;

[0090] Figure 8 For Figure 7 Transverse cross-sectional view of the structure after injecting glue into the embedded part in

[0091] Figure 9 Structural diagram of the rear locking pin of the node after injecting glue;

[0092] Figure 10 For Figure 7 Structural diagram of the embedded part in

[0093] Figure 11 Clamping diagram of the second type of embedded part mold of the geocell node provided by this application;

[0094] Figure 12 Structural diagram of the layout of the second type of embedded part of the geocell node provided by this application;

[0095] Figure 13 For Figure 12 Transverse cross-sectional view of the structure after injecting glue into the embedded part in

[0096] Figure 14 Structural diagram of the node after injecting glue;

[0097] Figure 15 For Figure 12 Structural diagram of the embedded part in

[0098] Figure 16 Schematic diagram of the clamping structure of the mold of the node in the first type of geocell;

[0099] Figure 17 Schematic diagram of the ejector pin ejection structure of the node in the first type of geocell Specific implementation manners

[0100] The present invention discloses a geocell and its node structure, a manufacturing method of the geocell, and a casting mold, which improve the structural strength of the geocell node

[0101] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention

[0102] As Figures 1 - 4 shown Figure 1 Schematic diagram of the layout structure of the first type of geocell provided by this application Figure 2 Schematic diagram of the layout structure of the second type of geocell provided by this application Figure 3 For Figure 1 Schematic cross-sectional structure diagram of the geocell node at position A in Figure 4 For Figure 2 Schematic cross-sectional structure diagram of the geocell node at position B in

[0103] The present application provides a node structure of a geocell, which includes a first strip 1 and a second strip 2. A connection node is provided between the first strip 1 and the second strip 2. The node is formed by bonding strips of a predetermined length. Along the length direction of the strip, the node has a first junction area 3 and a second junction area 4 distributed at both ends of the length. The strip between the first junction area 3 and the second junction area 4 is divided into multiple layers by a separation seam 52 and extends alternately in the thickness direction to form a cavity channel 53; the node is wrapped by a colloid 6. The node of the geocell is formed by bonding and connecting two adjacent strips in the thickness direction. At the same time, the connection node between the first strip 1 and the second strip 2 is set as a node structure with a predetermined length. In the length direction of the node, the first strip 1 and the second strip 2 can form the first junction area 3 and the second junction area 4 that are attached to each other at both ends along the length direction. Further, through the node structure of a predetermined length, the node between the first junction area 3 and the second junction area 4 adopts an open structure. Specifically, the node between the first junction area 3 and the second junction area 4 has a double-layer structure. Multiple separation seams 52 are cut on the strips of the double-layer structure. The separation seams 52 extend along the length direction of the strip. The strip is divided into multiple layers in the height direction. The multiple strip structures are alternately opened in the thickness direction. Then, in the height direction, the strip between the first junction area 3 and the second junction area 4 encloses a vertical cavity channel 53. The node is wrapped by the colloid 6. During the filling process of the colloid 6, it is poured into the cavity channel 53 and wraps around the outer periphery of the first junction area 3, the second junction area 4, and the cavity channel 53. The node and the colloid form a multi-layer connection structure, enabling the geocell to obtain higher connection strength at the node position. The first strip 1 and the second strip 2 are not easily peeled off at the node position, and the tensile capacity and shear strength of the geocell are both greatly improved.

[0104] In a specific embodiment of this case, the node is formed by bonding the first strip 1 and the second strip 2 of a predetermined length. The node has a first junction area 3 and a second junction area 4, and the first junction area 3 and the second junction area 4 are respectively located at both ends of the bonding length of the first strip 1 and the second strip 2. The node of the geocell refers to the point, line, or surface at the connection of the grid units formed by the adjacent first strip 1 and the second strip 2. In this embodiment, the node is formed by bonding the first strip 1 and the second strip 2 of a predetermined length to form a surface contact structure. At the same time, since the middle part of the node adopts an alternately open manner, the first junction area 3 and the second junction area 4 located at both ends in the length direction of the node are formed at the node position. In the first junction area 3 and the second junction area 4, the first strip 1 and the second strip 2 are arranged in an open manner away from each other in the extending direction; in the direction towards the middle of the node, the first strip 1 and the second strip 2 remain in an attached state.

[0105] By setting the node to include a first junction area 3, a second junction area 4, and a middle cavity channel 53 structure, and wrapping it with a colloid 6 in three parts. The colloid 6 wraps around the periphery and the middle cavity channel 53 structure, and the colloid 6 and the node are in a cross-fusion state. When the geocell is in use, the colloid 6 and the node are not easily peeled off, ensuring strong tensile strength and shear strength.

[0106] As Figure 5 and Figure 6 shown, Figure 5 This is the front view of the clamping form of the geocell node provided by this application; Figure 6 And Figure 5 the axonometric view of the clamping form of the geocell node.

[0107] Furthermore, the node also has a transition connection part 5 located before the first junction area 3 and the second junction area 4. The transition connection part 5 has a plurality of separation seams 52 arranged at intervals along the height direction of the node. The transition connection part 5 is divided into a plurality of layered structures 51 by the plurality of separation seams 52. The plurality of layered structures 51 are bent along the thickness direction and stagger out; a cavity channel 53 is formed between the plurality of layered structures 51. The cavity channel 53 is located between the first junction area 3 and the second junction area 4. Specifically, the middle part of the bonded part of the first strip 1 and the second strip 2 is the transition connection part 5 of the node. The transition connection part 5 is a two-layer strip structure. To form a hollow cavity structure, the transition connection part 5 is separated into multiple layered structures 51 in the height direction by cutting the separation seams 52. Each layered structure 51 is a two-layer strip laminated structure. The plurality of layered structures 51 are bent along the thickness direction and stagger out. From the top view, the staggered layered structures 51 and the first junction area 3 and the second junction area 4 enclose a cavity structure, and a cavity channel 53 is formed in the height direction. When pouring the colloid, the colloid can be injected into the cavity channel 53 through the gaps between the layered structures 51 to fill the cavity channel 53. After shaping, when the first strip 1 and the second strip 2 are stretched, the node position is combined by the colloid 6 and the double-layer strip, improving the tensile strength of the geocell at the node position. The colloid supports the inside of the cavity channel, improving the shear strength.

[0108] In this embodiment, the colloid 6 is a reinforcing colloid that wraps around the first connection area 3 and the second connection area 4 and fills the cavity channel 53. The colloid 6 wraps the node position. At the same time, since the node is formed by connecting the first strip 1 and the second strip 2 by the first connection area 3 and the second connection area 4, and the strips are arranged in layers and staggered at the transition connection part 5, the colloid 6 is filled in the key positions forming the node to realize the wrapping of the first connection area 3 and the second connection area 4, avoiding tearing and peeling between the first strip 1 and the second strip 2. At the same time, the colloid 6 is filled in the cavity channel 53 to shape the cavity channel 53. The tensile force transmitted by the first strip 1 and the second strip 2 to the transition connection part 5 is supported by the reinforcing colloid in the cavity channel 53, realizing the support of the first strip 1 and the second strip 2 during the tensile peeling process by the colloid at the positions of the first connection area 3 and the second connection area 4 and the reinforcing colloid in the cavity channel 53.

[0109] Furthermore, the colloid 6 is an overall wrapping colloid that fills the inside and outside of the node and has an arc-shaped outer surface structure. The colloid 6 has an overall wrapping structure, wraps the first connection area 3 and the second connection area 4, fills the cavity channel 53, and wraps the first connection area 3, the second connection area 4, and the cavity channel 53 as a whole, making the node form an integral structure as a whole and ensuring the strength of the node. The arc-shaped structure of its outer ring also improves the compressive resistance of the node position and the force uniformity.

[0110] In this embodiment, the colloid 6 is arranged to shape the extending directions of the first strip 1 and the second strip 2, and a predetermined angle is formed between the first strip 1 and the second strip 2.

[0111] The predetermined angle is 0° - 135°, preferably 0° - 90°. The first strip 1 and the second strip 2 are wrapped by the colloid 6 at the node position. The roots of the first strip 1 and the second strip 2 are connected to the node and are wrapped and shaped by the colloid 6. Then, the first strip 1 and the second strip 2 are constrained by the colloid 6, and the shaping of the predetermined angle can be realized. The preferred predetermined angle is 0° - 90°. Within this angle range, the bending degree of the first strip 1 and the second strip 2 includes both the bending of the extending part of the strip and the bending of the transition connection part 5. By controlling the angle, it is not only convenient for the first strip 1 and the second strip 2 to form the cells of the geocell after opening, but also avoids the problem that the bending angle at the connection end of the first strip 1 and the second strip 2 with the transition connection part 5 is too large, resulting in easy breakage of the first connection area 3 and the second connection area 4 caused by the transition bending of the strips at the first connection area 3 and the second connection area 4, ensuring the strength of the connection area position.

[0112] In this embodiment, the colloid 6 is an injection - molded colloid filled between the first connection area 3, the second connection area 4, and the cavity channel 53.

[0113] Specifically, clamping cavities 7 for clamping the first connection area 3 and the second connection area 4 are formed in the injection molding colloid;

[0114] Clamping fixtures 8 for clamping the first strip 1 and the second strip 2 are arranged in the clamping cavities 7, and the clamping fixtures 8 simultaneously maintain the cavity channel 53 formed by the transition connection part;

[0115] The clamping fixtures 8 are withdrawn after the colloid injection molding is completed.

[0116] The colloid 6 is an injection molding colloid. During the injection molding process, the colloid 6 is in a molten fluid state, and the melting temperature of the injection molding material should be lower than the melting temperature of the strips 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 may be in a slightly melted state due to the melting temperature of the colloid, improving the bonding ability between the colloid and the strips.

[0117] At the same time, the strips have certain elastic characteristics, including a strip body and a reinforcing core. The strip body is usually made of high-strength materials such as polypropylene (PP) or polyethylene (PE). These materials have good wear resistance, chemical stability, resistance to light and oxygen aging, and acid and alkali resistance, and are suitable for different soil and desert soil conditions. The reinforcing core is located inside the strip body and can be a steel strip, steel wire, polypropylene stretched belt, polyethylene terephthalate stretched belt, or glass fiber, etc. The purpose of the reinforcing core is to improve the overall tensile mechanical strength of the strip and improve its welding and connection performance.

[0118] The material characteristics of the first strip 1 and the second strip 2 require maintaining the protruding state of the transition connection part 5 during injection molding. From the perspective of the node finished product, clamping cavities 7 are provided at both positions of the node in the first connection area 3 and the second connection area 4. The clamping cavities 7 are distributed in pairs at both ends of the strip thickness. The clamping cavities 7 clamp the first connection area 3 and the second connection area 4 during the pouring process, and prevent the protruding strips from sliding out of the first connection area 3 and the second connection area 4, ensuring the structural form of the cavity channel 53. The clamping cavity 7 is the clamping space for the clamping fixtures 8. After the pouring material is basically solidified, the clamping fixtures 8 are withdrawn, thus forming the clamping cavity 7. The structure of the clamping cavity 7 releases the bending deformation stress at the positions of the first connection area 3 and the fourth connection area 4 after pouring is completed, forming a cavity structure, and can also provide a deformation space for the colloid when the colloid is squeezed, further improving the shear resistance of the colloid.

[0119] As Figures 7 - 10 shown, Figure 7 This is the first pre-embedded part layout structure diagram of the geocell node provided by the present application; Figure 8 is Figure 7 the transverse sectional view of the structure after injecting glue into the pre-embedded part in Figure 9 is the structure diagram of the post-injection locking pin of the node after injecting glue; Figure 10 isFigure 7 Structural diagram of the middle embedded part

[0120] In a specific embodiment of this case, a clamping pin is embedded in the cavity channel. The clamping pin 101 includes a group of clamping arms respectively close to the first junction area 3 and the second junction area 4; the clamping pin 101 is wrapped in the colloid.

[0121] Specifically, the clamping pin is a U-shaped clamping pin. Locking pins 102 are also installed at the rear in the clamping cavities of the first junction area and the second junction area. The locking pins 102 have a group of locking arms that press the first strip 1 and the second strip 2 in the thickness direction.

[0122] It can be understood that the first strip 1 and the second strip 2 directly wrapped by the colloid can improve the integrated structural strength of the colloid at the node position through the integral structure. However, when subjected to shear force or lateral extrusion, the node is supported by the material strength of the node itself, and there is still a problem that it is prone to bending. This embodiment provides a further optimization solution.

[0123] On the one hand, for nodes with a relatively long lateral distance, which is suitable for relatively large-sized and high-height geocells, when the nodes have a relatively long lateral distance, using the middle cavity structure formed at the node position, a clamping pin 101 is embedded in the cavity channel. The clamping pin 101 is a U-shaped clamping pin and has a group of clamping arms connected by an arc transition part. The two clamping arms in the group are respectively arranged close to the first junction area 3 and the second junction area 4. When injecting glue into the mold, the U-shaped transition structure can be used to lap on the ejector pin. Then, the clamping pin is embedded in the node, and the anti-deformation and anti-shear ability is further improved by the U-shaped clamping pin made of metal material.

[0124] Furthermore, by using the clamping cavities respectively arranged on both sides in the thickness direction of the strip, through the rear-mounted locking pins 102, the locking pins 102 also have a U-shaped structure and have a group of locking arms that respectively extend into the clamping cavities, and the nodes are pressed in the thickness direction by the locking arms. Through the embedded U-shaped clamping pins and the rear-mounted locking pins, the strength of the nodes is further provided.

[0125] Such as Figures 11 - 15 shown Figure 11 is the second embedded part mold clamping diagram of the geocell node provided by this application; Figure 12 is the second embedded part layout structural diagram of the geocell node provided by this application;

[0126] Figure 13 is Figure 12 the transverse sectional view of the structure after injecting glue into the middle embedded part; Figure 14 is the structural diagram of the node after injecting glue; Figure 15 is Figure 12 the structural diagram of the middle embedded part

[0127] In a specific embodiment of this case, a central embedded part 203 arranged along the height direction of the node is embedded in the cavity channel.

[0128] Specifically, the central embedded part 203 includes a rod part 223 extending vertically, and a transverse part 213 arranged at the top of the rod part 223; the central embedded part 203 is a T-shaped metal embedded part.

[0129] On the other hand, for geocells with short node distances and low strength requirements, in the case where the strength of the geocell can be satisfied without setting multiple pin structures, the middle cavity structure at the node position is also utilized, and a T-shaped metal embedded part is arranged therein as the central embedded part 203. Preferably, the rod part 223 of the central embedded part 203 of the T-shaped metal structure is coaxially arranged with the node. At the same time, in order to avoid the ejector pin and the central embedded part, the ejector pin 201 is set as two fork-shaped ejector pins arranged in parallel on the mold. By utilizing the structure of the transverse part 213 of the central embedded part 203, the central embedded part 203 is supported on the fork-shaped ejector pins, that is, the central embedded part 203 of the T-shaped metal structure is coaxially arranged in the middle of the node and is wrapped in the node along with the injection of the colloid 6. By setting a single T-shaped embedded part, for geocells with low strength requirements, the anti-bending and anti-shearing capabilities of the node are improved.

[0130] In this embodiment, the first strip and the second strip are HDPE strips, PP strips or PET strips. HDPE (high-density polyethylene) strips have good flexibility and chemical corrosion resistance, relatively low tensile strength but good ductility, and are suitable for projects that require ductility and flexibility, such as subgrade reinforcement. PP (polypropylene) strips have relatively high tensile strength but are more brittle and have poor ductility, and are suitable for projects that require high strength, but attention should be paid to their brittleness. PET (polyester) strips have both strength and ductility, and have good comprehensive performance, and are suitable for projects with relatively high comprehensive performance requirements. By adopting the above-mentioned node wrapping tape structure for strips of different materials, the structural performance of the geocell is improved as a whole.

[0131] The colloid is injection-molded from one or more materials among TPE, TPR, TPU, EVA, EMA, EEA, PVC, PP, PE, HDPE, SBS, ABS, PA6, PA12, TPEE, and EBA. The colloid can be injection-molded alone using TPE (thermoplastic elastomer), TPR (thermoplastic rubber), TPU (thermoplastic polyurethane), EVA (ethylene-vinyl acetate copolymer), EMA (ethylene-methyl acrylate 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), TPEE (thermoplastic polyester elastomer), or a mixture of multiple materials.

[0132] As Figure 1 and Figure 2 As shown, based on the node structure of the geocell in the above embodiments, the present application also provides a geocell, including multiple strips 501 arranged along the thickness direction of the strip. A plurality of nodes 502 are formed between adjacent two strips 501, and the nodes 502 have the node structure of the geocell provided in the above embodiments.

[0133] In this embodiment, the multiple strips 501 are separated by the nodes to form a plurality of cells 503, and the cross-section of the cells 503 along the height direction is triangular or quadrilateral.

[0134] In a specific embodiment of this case, a cavity channel 53 is formed at each node position. The separation seam 52 is a cut seam 52 cut along the thickness direction when adjacent two strips are attached and in contact; the strips in the same layer separated by the cut seam 52 extend in the same direction. There is a node between every two adjacent cells of the geocell. Each node is wrapped with a colloid structure, and the nodes wrapped with the colloid are set to have a strip distribution structure of a first junction area 3, a second junction area 4, and a transition connection part 5, so that the geocell is structurally strengthened by each node, thereby providing the overall tensile strength and shear strength of the geocell.

[0135] In a further preferred solution, in the cavity channel 53 of the transition connection part 5, by setting a U-shaped clamping pin 101, the node forms a combined structure of metal + colloid. The strip and the clamping pin 101 are integrally combined by the colloid, and the clamping pin 101 further improves the anti-shear ability. At the same time, the clamping pin 101 is arranged close to the first junction area 3 and the second junction area 4 respectively through two clamping arms, adapting to the use scenario of geotextiles with higher strength requirements.

[0136] In a specific embodiment of this case, both ends of the partition seam in the length direction extend to the inner sides of the first and second junction areas of the node. After the node is wrapped with colloid, the first junction area 3 and the second junction area 4 have a predetermined length. After the transition connection part 5 is cut from the strip, a cavity channel 53 is formed by protruding along the thickness direction of the layered structure 51. It can be understood that during the process of protruding the layered structure 53 along the thickness direction, the strip will drive the first junction area 3 and the second junction area 4 to approach each other. If this application needs to maintain the predetermined length between the first junction area 3 and the second junction area 4, then when the first strip 1 and the second strip 2 are laid flat and cut, the length of the partition seam 52 should be greater than the predetermined length between the first junction area 3 and the second junction area 4. As the layered structure 51 protrudes, the partition seam 52 is pulled into the space between the first junction area 3 and the second junction area 4 until both ends of the partition seam 52 are stretched to the inner sides of the first strip 1 and the second strip 2. At this time, the transition connection part 5 forms a predetermined cavity channel, and then the clamping fixture 8 clamps the first junction area 3 and the second junction area 4 to ensure that the strip maintains a predetermined shape during the colloid pouring process.

[0137] Based on the above geocell, this application also provides a manufacturing method of a geocell for preparing a geocell with a node structure of the geocell as described in the above embodiment, including the steps:

[0138] Lay the first strip 1 and the second strip 2 closely;

[0139] The formation of each node is achieved by the first strip 1 and the second strip 2 being laid closely to form a junction position. To adapt to the predetermined length structure of the node in this application, the first strip 1 and the second strip 2 are laid closely along the length direction to facilitate subsequent operations such as cutting and injection molding.

[0140] Locate the node positions of the first strip and the second strip, and prepare multiple partition seams along the height direction of the node positions;

[0141] At the predetermined positions of the first strip 1 and the second strip 2 for the nodes, according to the predetermined dimensions or the product application scenario, locate the close-fitting positions and lengths of the first strip 1 and the second strip 2. After the first strip 1 and the second strip 2 are laid closely to reach the predetermined positions, prepare multiple partition seams at the node positions. Through a cutting tool, the partition seams include multiple ones that penetrate the thickness direction of the double-layer strip and are arranged in parallel along the height direction of the strip.

[0142] Clamp the first junction area and the second junction area at both ends of the length of the node position;

[0143] After cutting the partition seam 52, the strip needs to be opened to a predetermined posture, including the opening angle of the free ends at both ends of the first strip 1 and the second strip 2, and the predetermined length of the first junction area 3 and the second junction area 4 on the strip.

[0144] The strips at the node positions are staggered and opened along the direction of the separation seam to form a cavity channel;

[0145] Before pouring the colloid, the strips are staggered and spread along the direction of the separation seams, and the strips are divided into multiple layered structures 51 by the separation seams 52, and the multiple layered structures 51 are staggered and spread along the height direction. Of course, it can be understood that the combination between the colloid and the layered structures 51 can be in a multi-layered combination state through the staggered layered structures 51. Of course, the layered structures 51 can be separated by parallel separation seams 52, and can also use various forms such as oblique separation seams and curved separation seams, that is, it is ensured that the cavity channel is formed by the staggered structure, and it is also ensured that the multiple layered structures 51 and the colloid form a multi-layered combination structure, thereby improving the bonding strength between the colloid and the strips.

[0146] Arrange a clamping pin in the cavity channel; then pour colloid at the node position, and the colloid wraps the node position; finally pour colloid, wherein the colloid wraps the first intersection area 3 and the second intersection area 4, and the angle between the first strip 1 and the second strip 2 is fixed; the geocell is arranged in a honeycomb structure during the construction process. In order to facilitate the molding of the geocell, the free ends of the first strip 1 and the second strip 2 can be extended along a predetermined angle during the pouring process. Therefore, when the colloid is poured, a directional node casting structure can be formed for the extension direction of the first strip 1 and the second strip 2, and the node colloid realizes the shaping of the extension direction of the first strip 1 and the second strip 2.

[0147] The colloid is filled in the cavity channel 53 to shape the open state of the strip at the node position. Since the strip itself has a certain elasticity, after being staggered and opened by multiple layered structures 51, the elasticity of the layered structure 51 will make the cavity channel rebound to the initial state. By pouring colloid in the cavity channel 53, the layered structure 51 is wrapped during the colloid filling process, and the clamping pin 101 is positioned in the cavity channel 53. After the colloid is shaped, the strip is maintained in an open state. The clamping pin 101 needs to be positioned and embedded in the cavity channel 53. The mold clamps the clamping pin 101 along the height direction of the node. The clamping pin 101 is set to a U-shaped structure, which can achieve structural support for the node in a certain length direction. At the same time, since the strip needs to be ejected and bent by the mold ejector pin, the ejector pin can pass through the U-shaped middle part of the ejector pin to form a space for the ejector pin and the clamping pin to pass through.

[0148] As for the central embedded part 203 structure, when manufacturing the geocell, the arrangement of the mold structure and the central embedded part 203 needs to be adjusted. In this embodiment, the ejector pins are adjusted to have a parallel fork-shaped ejector pin structure. The central embedded part 203 is basically coaxially arranged with the node, and the rod portion 223 of the central embedded part 203 falls between the fork-shaped ejector pins.

[0149] In a specific embodiment of this case, the separation seams include multiple cutting seams that are equally spaced along the height directions of the first strip and the second strip. The separation seam 52 can be set as straight cutting seams with equal spacing. The cavity channels 53 are evenly distributed on both sides in the strip thickness direction. The first strip 1 and the second strip 2 can obtain uniform tensile strength and shear strength, maintaining the performance consistency on both sides in the node thickness direction. Of course, the cutting seams can be set in various forms such as curved, inclined, or toothed, ensuring the bonding strength between the strip and the colloid.

[0150] Furthermore, the cross-section of the colloid is elliptical, and the first junction area 3 and the second junction area 4 are respectively located at the two focal positions of the ellipse. To adapt to the node having a predetermined length along the length directions of the first strip 1 and the second strip 2, setting the cross-section of the colloid, referring to the cross-section in the node height direction, as elliptical can simultaneously wrap the first junction area 3, the transition connection part 5, and the second junction area 4 arranged in the length direction. The first junction area 3 and the second junction area 4 are distributed at the two basic focal positions of the elliptical structure, making full use of the colloid wrapping structure to ensure the overall strength of the node.

[0151] In this embodiment, the first strip and the second strip are arranged at a predetermined angle in the extending direction.

[0152] In this embodiment, the predetermined angle is 0° - 135°, preferably 0° - 90°. The angle between the first strip 1 and the second strip 2 is between 0° - 90°, and it can be set to various structures such as 0 degrees, 30 degrees, 45 degrees, or 60 degrees, etc. To ensure that when the strip is at the maximum bending angle compared to the first junction area 3 and the second junction area 4, it can still maintain sufficient ductility and avoid excessive bending, so that the external traction force acting on the first strip 1 and the second strip 2 is applied to the first junction area 3 and the second junction area 4, enabling the node to play an overall role in resisting tension and shear.

[0153] In a specific embodiment of this case, the geocell is separated by multiple strips 501 and multiple nodes 502 to form multiple cells 503, and the cross-section of the cell 503 is triangular or polygonal.

[0154] By setting the included angle between the first strip 1 and the second strip 2 at 0° - 90°, the cells finally formed by the geocell can form a triangle, as Figure 6 shown, the first strip 1 extends horizontally and the second strip 2 extends obliquely; or it can form a polygon, as Figure 5 shown, both the first strip 1 and the second strip 2 extend obliquely. Of course, the extending directions of the first strip 1 and the second strip 2 can also be adjusted and coordinated with the node positions to form other polygonal structures.

[0155] In a specific embodiment of the present case, the geocell includes a plurality of strips, and the node positions include a plurality of nodes located between two adjacent strips. Figure 5 and Figure 6 In the geocell structure shown, the geocell has multiple strips during the laying process, and the nodes between the strips realize continuous laying.

[0156] In a specific embodiment of the present case, the colloid is formed by injection molding of one or more materials selected from the group consisting of PE, TPR, TPU, EVA, EMA, EEA, PVC, PP, PE, HDPE, SBS, ABS, PA6, PA12, TPEE, and EBA.

[0157] In a specific embodiment of the present case, a plurality of ejection devices are arranged at the node position and distributed on both sides of the node position in the thickness direction. The plurality of ejection devices are staggered and ejected along the thickness direction of the node position, so that the node position is staggered and opened along the separation seam; the plurality of ejection devices are withdrawn after the colloid pouring is completed. Since the layered structure 51 of the node needs to be staggered and opened along the thickness direction, and at the same time, during pouring, the layered structure needs to be kept in an open state to avoid deformation of the layered structure during the curing process of the colloid, an ejection structure is arranged, and the ejection device staggers and abuts against the layered structure 51 of each layer, so as to form the injection molding form of the layered structure, and after the pouring is completed, the ejection device is withdrawn, and the colloid can continue to be added to the withdrawn space, or it can be retained as a cavity. The interlaced combination of the colloid and the strips ensures the bonding strength.

[0158] like Figure 15 and Figure 16 As shown, Figure 15 It is a schematic diagram of the mold clamping structure of the nodes in the first type of geocell; Figure 16 Schematic diagram of the ejector pin structure of the node in the first type of geocell.

[0159] Based on the above-mentioned geocell manufacturing method, the present application also provides a geocell casting mold, which is used for colloid casting of the node structure of the above-mentioned geocell, including:

[0160] A mold body 9, wherein a casting cavity 91 for casting the node position of the first strip 1 and the second strip 2, and a clamping cavity for clamping the node connection end of the first strip 1 and the second strip 2 are arranged in the middle of the mold body 9;

[0161] The mold body 9 is provided with a first clamping device 701 and a second clamping device 702 which can be extended into the casting cavity 91 and clamp the first intersection area and the second intersection area of ​​the node position respectively;

[0162] An ejection device 703 is also provided in the mold body 9 for ejecting and opening the node position along the thickness direction to form a cavity channel.

[0163] The middle part of the mold body 9 is a casting cavity, which is suitable for forming a geocell. When forming a node, the node requires a structure in which the first strip 1 and the second strip 2 are fitted in the thickness direction. The two free ends of the first strip 1 and the second strip 2 in the length direction are clamped separately by the clamping cavity. The node is formed in the middle part of the mold body 9. After the first strip 1 and the second strip 2 pass through the clamping cavity, the attachment and intersection position of the two in the thickness direction is located in the casting cavity 91.

[0164] At the same time, since the first strip 1 and the second strip 2 have an open structure along the thickness direction at the node position, the open strip will produce elastic deformation when not constrained and cannot be positioned at the predetermined position of the casting cavity 91. The mold body 9 is provided with a first clamping device 701 and a second clamping device 702, and the first intersection area and the second intersection area of ​​the node are positioned at the two focal positions of the casting cavity 91. The node is a basic elliptical structure, and the two focal positions are used as the intersection points of the first strip 1 and the second strip 1 for attachment and contact. By setting the focal position, the performance advantages of the elliptical node can be maximized. Of course, the positions of the first intersection area and the second intersection area can also be adjusted according to the performance of the first strip 1 and the second strip 2. In theory, the two intersection area structures are formed in the node, and the strip open structure is formed between the two intersection areas, which are all within the protection scope of the present application.

[0165] The first clamping device 701 and the second clamping device 702 have the same structure, and both include clamping columns distributed on both sides of the strip thickness direction, and the clamping columns on both sides are close to each other to achieve the clamping of the strip. After the pouring is completed, the clamping columns of the first clamping device 701 and the second clamping device 702 are both retracted in the strip height direction to form a clamping cavity at the node for stress release at the strip bending position.

[0166] In a specific embodiment of the present case, the clamping cavity includes clamping the first cavity 1001 and the second cavity 1002 along the thickness direction of the first strip 1. The first cavity 1001 and the second cavity 1002 are respectively connected to the casting cavity 91 and respectively clamp the two protruding ends of the first strip 1 in the length direction.

[0167] The clamping cavity also includes a third cavity 1003 and a fourth cavity 1004 for clamping the second strip 2 in the thickness direction. The third cavity 1003 and the fourth cavity 1004 are respectively connected to the casting cavity 91, and respectively clamp the two extended ends in the length direction of the second strip 2. Each strip has two free ends, corresponding to the first strip 1 and the second strip 2 forming a node, and the clamping cavity needs to form 4 cavities to clamp the strips.

[0168] Corresponding attachment Figure 16 , 17The structure of the casting mold 9 shown forms a clamping structure for guiding and extending the two free ends of the first strip 1 by the first cavity 1001 and the second cavity 1002, and at the same time forms a clamping structure for both ends of the first strip 1; the third cavity 1003 and the fourth cavity 1004 form a clamping structure for guiding and extending the two free ends of the second strip 2. By clamping the free ends of the strip through the corresponding cavities provided, the extending direction and extending angle of the strip can be controlled. When preparing a geocell with triangular cells or quadrilateral cells, strips in a predetermined extending direction can be formed through the angles of the cavities, and the shaping of the extending direction of the strips can be achieved during the node casting process, and the structural consistency of each cell of the geocell can be realized.

[0169] Further, the mold body 9 includes a left fixed angle module 92 and a right fixed angle module 93 located between the included angle of the extending directions of the first strip 1 and the second strip 2. The left fixed angle module 92 and the right fixed angle module 93 are arranged oppositely and are respectively located at both ends in the length direction of the node position;

[0170] It further includes an upper fixed angle module 94 and a lower fixed angle module 95 respectively located on both sides in the thickness direction of the first strip 1 and the second strip 2;

[0171] The clamping cavity is located at the adjacent positions of the left fixed angle module 92, the upper fixed angle module 94, the right fixed angle module 93 and the lower fixed angle module 95. The mold body 9 adopts independent fixed angle modules. Preferably, the left fixed angle module 92, the upper fixed angle module 94, the right fixed angle module 93 and the lower fixed angle module 95 are all set as movable structures. During casting, after the first strip 1 and the second strip 2 are positioned and placed in the casting cavity 91, the free ends of the strip are clamped by the displacement of the fixed angle modules, and the fixed angle modules approach each other to form the first cavity 1001, the second cavity 1002, the third cavity 1003 and the fourth cavity 1004.

[0172] In a specific embodiment, the injection molding material can be only poured into the casting cavity 91 to wrap the node, improving the tensile resistance and shear resistance at the node position. In another specific embodiment, the gaps of the first cavity 1001, the second cavity 1002, the third cavity 1003 and the fourth cavity 1004 can be controlled so that part of the colloid during the casting process is wrapped at the position where the first strip 1 and the second strip 2 are connected to the node, further improving the overall structural strength of the geocell.

[0173] In a specific embodiment of this case, the first clamping device 701 and the second clamping device 702 respectively clamp both sides of the first strip 1 and the second strip 2 in the thickness direction. When the ejecting device 703 ejects and opens the node position, the first strip 1 and the second strip 2 can slide between the first clamping device 701 and the second clamping device 702. The first clamping device 701 and the second clamping device 702 are arranged in the casting cavity 91. During the process of casting the colloid, they clamp the strips in the first joint area and the second joint area of the node. At the same time, after casting and forming, they need to be withdrawn from the inside of the formed colloid. The first clamping device 701 and the second clamping device 702 perform the clamping work throughout the casting process to ensure the stability of the position of the open structure of the strip in the colloid.

[0174] Further, multiple cutting slits 52 are processed in the area where the first strip 1 and the second strip 2 are attached to form the node position. The node position is divided into multiple layered structures 51 by the multiple cutting slits 52;

[0175] The ejecting device 703 includes multiple ejector pins corresponding to the multiple layered structures 53 and arranged in a staggered up-and-down manner.

[0176] Preferably, the multiple ejector pins are respectively arranged on the upper corner module 94 and the lower corner module 95.

[0177] The ejecting device 703 includes ejector pins arranged in layers. The protruding end of the ejector pin is an arc end face. The ejector pins are staggered and distributed in the upper corner module 93 and the lower corner module 95. Through the staggered protruding manner of the ejector pins, the multiple layered structures 51 of the strip are staggered and opened. During the casting process, the colloid fills the cavity channels 53 formed by the staggered layered structures 51. Subject to the clamping of the strip by the first clamping device 701 and the second clamping device 702 and the filling of the colloid inside the node, the ejector pins can be sequentially retracted layer by layer during the injection of the colloid, so that the colloid fills the entire cavity channel, realizing the casting of a solid node and ensuring the internal structural strength of the node.

[0178] Reference Figures 11 - 13 , the layered ejector pins adopt fork-shaped ejector pins, which have two independent parallel ejector pins. The ejector pin structure of the layered ejector pin is the same as that of a single ejector pin. Only in the arrangement method, a parallel double-ejector pin structure is adopted and adjusted according to the node structure; in the mold structure, the casting cavity is adjusted according to the size of the node and adapted to the length of the node, adopting an elliptical or circular structure, and the same processing method is used in the mold structure and the pushing process of the strip. At the same time, for the geogrid casting mold adopting layered ejector pins, a casting cavity for casting the node position of the first strip 1 and the second strip 2 and a clamping cavity for clamping the node connection ends of the first strip 1 and the second strip 2 are arranged in the middle of the mold body;

[0179] An ejection device is also provided inside the mold body to eject and open the node position along the thickness direction to form a cavity channel.

[0180] The first strip 1 and the second strip 2 are processed with multiple cutting seams in the area where the node position is formed by attachment. The ejection device includes multiple layers of layered ejector pins that eject the node from the cutting seam position. The multiple layers of layered ejector pins are arranged in a staggered manner up and down. Each layer of layered ejector pins includes two fork-shaped ejector pins arranged in parallel, and a central channel for the central embedded part to pass through is formed between the two fork-shaped ejector pins.

[0181] Considering that the node size of the embedded central embedded part 203 is relatively small, and at the same time, using layered ejector pins with two fork-shaped ejector pins can assist in pressing the strip, so there is no need to set the first clamping device 701 and the second clamping device 702 in the first transfer area and the second transfer area, and the shaping of the node can be achieved.

[0182] The structure of the two fork-shaped ejector pins of the layered ejector pin 201 forms a central channel located between the two fork-shaped ejector pins in the height direction. The central embedded part 203 can pass through the central channel and be fixed in the node with the pouring of the colloid to form a central structure strengthening structure.

[0183] The included angle between the first cavity and the third cavity is 0° - 135°, preferably 0° - 90°. In this embodiment, 90° is adopted. Of course, it can also be 0°, 30°, 45°, etc. for various schemes to adapt to different strip included angles; the included angle between the second cavity and the fourth cavity is 0° - 135°, preferably 0° - 90°; similarly, in this embodiment, 90° is adopted. Of course, it can also be 0°, 30°, 45°, etc. for various schemes to adapt to different strip included angles. The first cavity and the second cavity are symmetrically arranged; the third cavity and the fourth cavity are symmetrically arranged.

[0184] The first cavity 1001 and the second cavity 1002 form a clamping structure for guiding and extending the two free ends of the first strip 1, and at the same time form a clamping structure for the two ends of the first strip 1; the third cavity 1003 and the fourth cavity 1004 form a clamping structure for guiding and extending the two free ends of the second strip 2. By designing the clamping surface angles of the left fixed angle module 92, the upper fixed angle module 94, the right fixed angle module 93, and the lower fixed angle module 95, a symmetrically arranged cavity structure can be formed.

[0185] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A node structure of a geocell, comprising a first strip and a second strip, wherein a connection node is provided between the first strip and the second strip, wherein: The node is formed by laminating strips of a predetermined length. Along the length direction of the strip, the node has a first intersection area and a second intersection area distributed at both ends of the length. The strip between the first intersection area and the second intersection area is divided into multiple layers by a separation seam, and extends in an interlaced manner along the thickness direction to form a cavity channel; the node is wrapped by a colloid.

2. The node structure of the geocell according to claim 1, characterized in that, The node is formed by bonding the first strip and the second strip of a predetermined length, and the node has a first intersection area and a second intersection area, and the first intersection area and the second intersection area are respectively located at two ends of the bonding length of the first strip and the second strip.

3. The node structure of the geocell according to claim 2, characterized in that, The node also has a transition connection portion located between the first intersection area and the second intersection area, and the transition connection portion has a plurality of separation seams arranged at intervals along the height direction of the node. The transition connection portion is divided into a plurality of layered structures by the plurality of separation seams, and the plurality of layered structures are bent along the thickness direction and extend in an interlaced manner; a cavity channel is formed between the plurality of layered structures.

4. The node structure of the geocell according to claim 3, characterized in that, The colloid is a reinforced colloid wrapped in the first junction area and the second junction area and filled in the cavity channel.

5. The node structure of the geocell according to claim 4, characterized in that The colloid is an integrally wrapped colloid that fills the inside and the periphery of the node, and the peripheral surface is a curved surface structure.

6. The node structure of the geocell according to any one of claims 1-5, characterized in that, The colloid shapes and arranges the extending directions of the first strip and the second strip, and a predetermined angle is formed between the first strip and the second strip.

7. The node structure of the geocell according to claim 6, characterized in that, The predetermined angle is 0°-135°.

8. The node structure of the geocell according to claim 7, characterized in that, The predetermined angle is 0°-90°.

9. The node structure of the geocell according to claim 8, characterized in that, A central embedded part arranged along the height direction of the node is embedded in the cavity channel.

10. The node structure of the geocell according to claim 9, characterized in that, The central embedded part comprises a rod portion extending vertically and a transverse part arranged at the top of the rod portion; the central embedded part is a T-shaped metal embedded part.

11. The node structure of the geocell according to claim 8, characterized in that, The colloid body is formed with clamping cavities for clamping the first junction area and the second junction area respectively; A clamping fixture for clamping the first strip and the second strip is arranged in the clamping cavity, and the clamping fixture simultaneously maintains a cavity channel formed by a transition connection portion between the first intersection area and the second intersection area; The clamping fixture is withdrawn after the colloid injection molding is completed.

12. The node structure of the geocell according to claim 11, characterized in that, A clamping pin is pre-buried in the cavity channel, and the clamping pin comprises a group of clamping arms respectively close to the first intersection area and the second intersection area; the clamping pin is wrapped in the colloid.

13. The node structure of the geocell according to claim 12, characterized in that, The clamping pin is a U-shaped clamping pin.

14. The node structure of the geocell according to claim 13, characterized in that, A locking pin is also installed in the clamping cavity of the first intersection area and the clamping cavity of the second intersection area. The locking pin has a group of locking arms that press the first strip and the second strip in the thickness direction.

15. The node structure of the geocell according to claim 6, characterized in that, The first strip and the second strip are HDPE strips, PP strips or PET strips.

16. The node structure of the geocell according to claim 6, characterized in that, The colloid is formed by injection molding of one or more materials selected from the group consisting of TPE, TPR, TPU, EVA, EMA, EEA, PVC, PP, PE, HDPE, SBS, ABS, PA6, PA12, TPEE, and EBA.

17. A geocell, comprising a plurality of strips arranged in the thickness direction of the strip, and a plurality of nodes are formed between adjacent two strips, characterized in that, The node has the node structure of the geocell as described in any one of claims 1-15.

18. The geocell according to claim 17, wherein, A plurality of the strips are separated by the nodes to form a plurality of cells, and the cross-section of the cells in the height direction is triangular or quadrilateral.

19. The geocell according to claim 18, characterized in that, A cavity channel is formed at each node position, and the separation seam is a cut seam cut along the thickness direction when two adjacent strips are attached and in contact with each other; The strips of the same layer separated by the cut seam extend in the same direction.

20. The geocell according to claim 19, characterized in that, Both ends in the length direction of the separation seam extend to the inner sides of the first joint area and the second joint area of the node.

21. A manufacturing method of a geocell, used to prepare a geocell having the node structure of the geocell as described in claims 1-8, 11-16, comprising the steps of: Closely arrange a first strip and a second strip; Locate the node positions of the first strip and the second strip, and prepare a plurality of separation seams along the height direction of the node positions; Clamp the first joint area and the second joint area at both ends in the length direction of the node position; Open the strips at the node position in a staggered manner along the direction of the separation seam to form a cavity channel; Arrange clamping pins in the cavity channel; Pour a colloid at the node position, and the colloid wraps the node position; Among them, The colloid wraps the first joint area and the second joint area to fix the angle between the first strip and the second strip; the colloid fills the cavity channel, wraps the clamping pins, and shapes the open state of the strips at the node position.

22. The manufacturing method of the geocell according to claim 21, characterized in that, The separation seam includes a plurality of cut seams evenly distributed along the height direction of the first strip and the second strip.

23. The manufacturing method of the geocell according to claim 21, characterized in that, The cross-section of the colloid is elliptical, and the first joint area and the second joint area are respectively located at the two focal positions of the ellipse.

24. The manufacturing method of the geocell according to claim 21, characterized in that, The first strip and the second strip are arranged at a predetermined angle in the extending direction.

25. The manufacturing method of the geocell according to claim 24, characterized in that, The predetermined angle is 0°-135°.

26. The manufacturing method of the geocell according to claim 21, wherein, The geocell includes a plurality of strips, and the node positions include a plurality located between two adjacent strips.

27. The manufacturing method of the geocell according to claim 26, characterized in that, The geocell is separated by a plurality of the strips and a plurality of the nodes to form a plurality of cells, and the cross-section of the cells is triangular or polygonal.

28. The manufacturing method of the geocell according to claim 21, characterized in that, The colloid is injection-molded from one or more materials of PE, TPR, TPU, EVA, EMA, EEA, PVC, PP, PE, HDPE, SBS, ABS, PA6, PA12, TPEE, EBA.

29. The manufacturing method of the geocell according to claim 21, characterized in that, A plurality of ejecting devices are arranged on both sides in the thickness direction of the node position at the node position, and the plurality of ejecting devices eject in a staggered manner along the thickness direction of the node position, so that the node position opens in a staggered manner along the separation seam; the plurality of ejecting devices withdraw after the colloid pouring is completed.

30. A manufacturing method of a geocell, used to prepare a geocell having the node structure of the geocell as described in claims 1-10, comprising the steps of: Closely arrange a first strip and a second strip; Locate the node positions of the first strip and the second strip, and prepare a plurality of separation seams along the height direction of the node positions; Open the strips at the node position in a staggered manner along the direction of the separation seam to form a cavity channel; A central embedded part is arranged in the cavity channel; Colloid is poured at the node position, and the colloid wraps the node position; Among them, The colloid wraps the first joint area and the second joint area, and determines the angle between the first strip and the second strip; the colloid is filled in the cavity channel, wraps the central embedded part, and shapes the open state of the strips at the node position.

31. A geocell casting mold for casting colloid for the node structure of the geocell as described in claims 1-8, 11-16, comprising: A mold body, in the middle of the mold body, there is a casting cavity for casting the node position of the first strip and the second strip, and a clamping cavity for clamping the connecting ends of the node positions of the first strip and the second strip; On the mold body, there are a first clamping device and a second clamping device that can be telescoped into the casting cavity to clamp the first joint area and the second joint area of the node position respectively; In the mold body, there is also an ejecting device for ejecting and opening the node position along the thickness direction to form a cavity channel.

32. The geocell casting mold according to claim 31, wherein, The clamping cavity includes a first cavity and a second cavity for clamping the first strip along the thickness direction. The first cavity and the second cavity are respectively communicated with the casting cavity and clamp the two protruding ends of the first strip in the length direction.

33. The soil geocell casting mold according to claim 32, characterized in that, The clamping cavity further includes a third cavity and a fourth cavity for clamping the second strip along the thickness direction. The third cavity and the fourth cavity are respectively communicated with the casting cavity and clamp the two protruding ends of the second strip in the length direction.

34. The geocell casting mold according to claim 33, wherein, The mold body includes a left angle-determining module and a right angle-determining module located between the included angles of the extending directions of the first strip and the second strip. The left angle-determining module and the right angle-determining module are arranged oppositely and are respectively located at both ends of the node position in the length direction; It further includes an upper angle-determining module and a lower angle-determining module respectively located on both sides of the first strip and the second strip in the thickness direction; The clamping cavity is located at the adjacent position of the left angle-determining module, the upper angle-determining module, the right angle-determining module and the lower angle-determining module.

35. The geocell casting mold according to claim 34, characterized in that The first clamping device and the second clamping device respectively clamp both sides of the first strip and the second strip attached in the thickness direction. When the ejecting device ejects and opens the node position, the first strip and the second strip can slide between the first clamping device and the second clamping device.

36. The geocell casting mold according to claim 35, characterized in that, Multiple cutting slits are processed in the area where the first strip and the second strip are attached to form the node position, and the node position is divided into multiple layered structures by the multiple cutting slits; The ejecting device includes multiple ejector pins corresponding to the multiple layered structures and arranged in a staggered manner up and down.

37. The geocell casting mold according to claim 36, characterized in that, The multiple ejector pins are respectively arranged on the upper angle-determining module and the lower angle-determining module.

38. The geocell casting mold according to claim 36, wherein The mold body also has a first clamping device and a second clamping device that can be telescopically arranged in the casting cavity. The first clamping device and the second clamping device respectively clamp the first joint area and the second joint area of the node position; An ejection device is further provided inside the mold body, and the ejection device ejects the node position in the thickness direction.

39. The geocell casting mold according to claim 38, characterized in that, The ejection end face of the ejector pin is an arc-shaped ejection end face.

40. The geocell casting mold according to claim 34, wherein The included angle between the first cavity and the third cavity is 0° - 135°; the included angle between the second cavity and the fourth cavity is 0° - 135°.

41. The geocell casting mold according to claim 40, wherein, The first cavity and the second cavity are symmetrically arranged; the third cavity and the fourth cavity are symmetrically arranged.

42. A geocell casting mold for casting a colloid of the node structure of the geocell as claimed in claims 1 - 10, comprising: A mold body, in the middle of the mold body, there is a casting cavity for casting the node positions of the first strip and the second strip, and a clamping cavity for clamping the node connection ends of the first strip and the second strip; An ejection device is further provided inside the mold body to eject and open in the thickness direction at the node position to form a cavity channel; Multiple cutting slits are processed in the area where the first strip and the second strip are attached to form the node position. The ejection device includes multiple layers of layered ejector pins that eject the node from the cutting slit positions. The multiple layers of layered ejector pins are arranged in a staggered manner up and down. Each layer of the layered ejector pins includes two fork-shaped ejector pins arranged in parallel, and a central channel for the central embedded part to pass through is formed between the two fork-shaped ejector pins.

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