Earthwork standard room, node clamping structure of earthwork standard room and earthwork standard room pouring mold

Abstract

The invention provides an earthwork standard room, a node clamping structure of the earthwork standard room and an earthwork standard room pouring mold, a node of the earthwork standard room is a joint part formed by attaching and connecting two adjacent strips in the thickness direction, and a first clamping framework and a second clamping framework are arranged at the node position at the same time; the first clamping framework and the second clamping framework are arranged on the two sides of the node in the thickness direction, the two attached strips are pressed in the thickness direction, meanwhile, the first clamping framework and the second clamping framework bend the node in the thickness direction, bending deformation of the node in the thickness direction is provided through the pressing part arranged at the node position, and therefore the two strips can be clamped in the thickness direction. Due to the fact that the first strip and the second strip are arranged, when the joint of the geocell is pulled and stretched in the construction process, the first strip and the second strip are not prone to being stripped at the joint position, meanwhile, the colloid wraps the integrated structure, the overall performance of the joint is improved, and the tensile capacity and the shear strength of the geocell are both 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 clamping structure, and a geocell casting mold. Background Art

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

[0003] The geocell forms a three-dimensional honeycomb structure through the connection of geogrid strips, which can provide more effective circumferential restraint to 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 geogrid strips with welded nodes, when subjected to axial tensile force, the HDPE geogrid strips gradually elongate, then show obvious necking deformation, and finally fracture and fail at the welded nodes. The main reason is that the geogrid strips near the nodes will be damaged during the welding process, thus forming weak points.

[0005] For the geogrid 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, microcracks will be generated in the strip immediately, and then fracture will occur quickly.

[0006] For the geogrid 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 geogrid 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 clamping structure, and a geocell 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 clamping structure of a geocell comprises a first strip and a second strip, wherein a connection node is arranged between the first strip and the second strip.

[0011] It also includes a first clamping frame and a second clamping frame which are pressed on both sides of the node in the thickness direction.

[0012] The first clamping frame and the second clamping frame are both provided with a pressing portion for bending and pressing the node along the thickness direction.

[0013] The nodes, the first clamping frame and the second clamping frame are wrapped by colloid.

[0014] Preferably, in the node clamping structure of the geocell, both the first clamping frame and the second clamping frame have windows for allowing part of the strips of the node to pass through, and bending parts for squeezing the part of the strips to pass through the windows.

[0015] Preferably, in the node clamping structure of the geocell, the bending portion comprises a plurality of first bending portions distributed along the height direction of the first clamping frame, and a plurality of second bending portions distributed along the height direction of the second clamping frame.

[0016] The first bending portion and the second bending portion are arranged in opposite directions of extension.

[0017] The first bending portion and the second bending portion form a complementary structure through the opening.

[0018] Preferably, in the node clamping structure of the geocell, the first bending portion and the second bending portion are unidirectional bending portions projected in a unidirectional bending shape along the height direction.

[0019] Preferably, in the node clamping structure of the geocell, the first bending portion and the second bending portion are bidirectional bending portions projected into a wave shape along the height direction.

[0020] Preferably, in the node clamping structure of the geocell, a cutting seam is arranged on the node, and the cutting seam corresponds to the intersection position of the bending portion and the window.

[0021] Preferably, in the node clamping structure of the geocell, the bent portion has a clamping tooth extending in the direction of the window opening, and a clamping gap for accommodating the part of the strip after extrusion is reserved between the clamping tooth and the root of the bent portion.

[0022] Preferably, in the node clamping structure of the geocell, the second clamping frame has two clamping bends located at both ends in the height direction, and the node is clamped between the two clamping bends in the height direction.

[0023] Preferably, in the node clamping structure of the above geocell, the first bending part and the second bending part are respectively bending parts with a rectangular, square, trapezoidal or arbitrary polygon, or arc shape in the projection along the height direction.

[0024] Preferably, in the node clamping structure of the above geocell, a vertical cavity channel is formed between the first bending part and the second bending part, and a hollow plunger for tensioning the first clamping framework and the second clamping framework is filled in the cavity channel. The hollow plunger is an arc-shaped hollow plunger with a substantially elliptical cross-section; a plurality of groups of glue injection holes corresponding to the window positions are formed on the side wall surface of the hollow plunger.

[0025] Preferably, in the node clamping structure of the above geocell, a vertical cavity channel with a substantially rectangular structure is formed between the first bending part and the second bending part, and a rectangular hollow plunger for tensioning the first clamping framework and the second clamping framework is filled in the cavity channel. The rectangular hollow plunger is a rectangular hollow plunger with a substantially rectangular cross-section; a plurality of groups of glue injection holes corresponding to the window positions are formed on the side wall surface of the rectangular hollow plunger.

[0026] Preferably, in the node clamping structure of the above geocell, the node is formed by fitting strips of a predetermined length.

[0027] Along the length direction of the strip, the middle parts of the first clamping framework and the second clamping framework are closely attached to form the pressing part, and fixed-angle parts for shaping the opening angles of the first strip and the second strip are formed at both ends of the first clamping framework and the second clamping framework.

[0028] Preferably, in the node clamping structure of the above geocell, the opening angle of the fixed-angle part is 0°-160°.

[0029] Preferably, in the node clamping structure of the above geocell, both the first clamping framework and the second clamping framework are clamping frameworks prepared from hard metal plates or hard plastics.

[0030] Preferably, in the node clamping structure of the above geocell, the first strip and the second strip are HDPE strips, PP strips or PET strips.

[0031] Preferably, in the node clamping structure of the above geocell, the colloid is injection-molded from one or more materials of TPE, TPR, TPU, EVA, EMA, EEA, PVC, PP, PE, HDPE, SBS, ABS, PA6, PA12, TPEE, EBA.

[0032] A geocell comprises a plurality of strips arranged in the thickness direction of the strip. A plurality of nodes are formed between two adjacent strips, and the nodes have the node clamping structure of the geocell described in any one of the above.

[0033] A geocell casting mold is used for the colloid casting of the node clamping structure of the geocell described above, and includes:

[0034] A mold body, in the middle of which a casting cavity for casting the node positions of the first strip and the second strip is provided. The projection shape of the casting cavity in the height direction of the node is a triangle, a rhombus, a square, a rectangle, a trapezoid, a circle, an ellipse or any polygon.

[0035] A clamping cavity that communicates with the casting cavity and guides and leads out the extending ends of the first strip and the second strip.

[0036] An ejection device is further provided in the mold body and is arranged opposite to the window opening position to eject and press the bent parts of the first clamping skeleton and the second clamping skeleton respectively.

[0037] The node clamping structure of the geocell provided in this application includes a first strip and a second strip. A connecting node is arranged between the first strip and the second strip, and further includes a first clamping skeleton and a second clamping skeleton that are pressed on both sides in the thickness direction of the node; both the first clamping skeleton and the second clamping skeleton are provided with pressing parts for bending and pressing the node in the thickness direction; the node, the first clamping skeleton and the second clamping skeleton are wrapped by colloid. The node of the geocell is a joint formed by two adjacent strips being attached and connected in the thickness direction. The first clamping skeleton and the second clamping skeleton are simultaneously arranged at the node position, and the first clamping skeleton and the second clamping skeleton are arranged on both sides in the thickness direction of the node to press the two abutting strips in the thickness direction. At the same time, the first clamping skeleton and the second clamping skeleton bend the node in the thickness direction. Through the pressing parts arranged at the node position, bending deformation of the node in the thickness direction is provided. From the transverse section of the clamping skeleton and the strip, a bent pressing structure formed between the two, the strips of the node and the first clamping skeleton and the second clamping skeleton are clamped with each other, and the node, the first clamping skeleton and the second clamping skeleton are wrapped by colloid to form an integral structure. By pressing in the thickness direction on both sides of the node strip through the first clamping skeleton and the second clamping skeleton, and bending and deforming the middle part of the node through the bent pressing part, when the node of the geocell is subjected to traction and tension during construction, the first strip and the second strip are not easily peeled off at the node position. At the same time, an integral structure wrapped by colloid is set, and the overall performance of the node is improved, and the tensile capacity and shear strength of the geocell are greatly improved.

[0038] Based on the above node structure of the geocell, a geocell casting mold is also provided. By clamping the nodes of the geocell in the casting cavity and ejecting and opening multiple layers of strips, the casting colloid can be injected into all positions of the nodes, realizing the stability of the combination of the geocell node structure and the colloid and ensuring the node strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] 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 the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0040] Figure 1 Schematic diagram of the node clamping structure of the first geocell provided by this application;

[0041] Figure 2 For Figure 1 Single-bending skeleton support structure diagram of the node clamping structure of the geocell in ;

[0042] Figure 3 For Figure 1 Double-bending skeleton support structure diagram of the node clamping structure of the geocell in ;

[0043] Figure 4 Schematic diagram of the node clamping structure of the second geocell provided by this application;

[0044] Figure 5 For Figure 4 Skeleton support structure diagram of the node clamping structure of the geocell in ;

[0045] Figure 6 Single-bending skeleton support structure diagram;

[0046] Figure 7 Exploded structure diagram of the single-bending skeleton;

[0047] Figure 8 Projection structure diagram of the single-bending skeleton;

[0048] Figure 9 Arc-bending skeleton support structure diagram;

[0049] Figure 10 Exploded structure diagram of the arc-bending skeleton;

[0050] Figure 11 Projection structure diagram of the arc-bending skeleton;

[0051] Figure 12It is a support structure diagram of a double-bending skeleton;

[0052] Figure 13 It is a structure diagram of a double-bending skeleton;

[0053] Figure 14 It is a projection diagram of a double-bending skeleton;

[0054] Figure 15 It is a schematic diagram of the pouring cavity structure of the geocell pouring mold provided by the present application. Specific implementation mode

[0055] The present invention discloses a geocell and its node clamping structure, and a geocell pouring mold, which improves the structural strength of the geocell nodes.

[0056] 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 the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0057] As Figures 1 - 5 shown, Figure 1 It is a schematic diagram of the node clamping structure of the first geocell provided by the present application; Figure 2 It is Figure 1 a single-bending skeleton support structure diagram of the node clamping structure of the geocell in Figure 3 It is Figure 1 a double-bending skeleton support structure diagram of the node clamping structure of the geocell in Figure 4 It is a schematic diagram of the node clamping structure of the second geocell provided by the present application; Figure 5 It is Figure 4 a skeleton support structure diagram of the node clamping structure of the geocell in

[0058] The present application provides a node clamping structure of a geocell, including a first strip 1 and a second strip 2. A connection node is provided between the first strip 1 and the second strip 2, and further includes a first clamping skeleton 4 and a second clamping skeleton 5 that are pressed on both sides in the thickness direction of the node; pressing parts 6 for bending and pressing the node in the thickness direction are provided on both the first clamping skeleton 4 and the second clamping skeleton 5; the node, the first clamping skeleton 4, and the second clamping skeleton 5 are wrapped by a colloid 3.

[0059] The node of the geocell is a joint formed by the abutting and connection of two adjacent strips in the thickness direction. At the node position, a first clamping skeleton 4 and a second clamping skeleton 5 are simultaneously arranged. The first clamping skeleton 4 and the second clamping skeleton 5 are arranged on both sides of the node in the thickness direction to press the two abutting strips in the thickness direction. At the same time, the first clamping skeleton 4 and the second clamping skeleton 5 bend the node in the thickness direction. Through the pressing part 6 arranged at the node position, the bending deformation of the node in the thickness direction is provided. From the transverse section of the clamping skeleton and the strip, a pressing structure with bending formed between the two has the strips of the node clamped with the first clamping skeleton 4 and the second clamping skeleton 5, and the node, the first clamping skeleton 4 and the second clamping skeleton 5 are wrapped by a colloid to form an integral structure.

[0060] By pressing the two sides of the node strip through the first clamping skeleton 4 and the second clamping skeleton 5 in the thickness direction, and bending the middle part of the node through the bent pressing part 6, when the node of the geocell is subjected to traction and tension during construction, the first strip 1 and the second strip 2 are not easily peeled off at the node position. At the same time, by setting the colloid-wrapped integral structure, the overall performance of the node is improved, and the tensile capacity and shear strength of the geocell are greatly improved.

[0061] The first clamping skeleton 4 and the second clamping skeleton 5 realize the function of pressing the node strip by bending the node in the thickness direction. Pressing parts 6 are arranged on both the first clamping skeleton 4 and the second clamping skeleton 5. In a realizable manner, the bending directions of the pressing parts 6 of the first clamping skeleton 4 and the second clamping skeleton 5 are arranged in the same direction. The pressing parts 6 can be divided into multiple layers in the height direction of the node. The multiple layers of pressing parts can be arranged with the same bending direction, or the multiple layers of pressing parts can be arranged in a staggered structure with opposite directions along the thickness direction. Then, the strips at the node position are squeezed by two layers of clamping skeletons, forming a four-layer pressing structure with clamping skeletons on both sides and strips in the middle. Cooperating with the strip structure arranged in multiple layers, a bending structure along the length direction of the strip is formed, increasing the difficulty of pulling the strip by the two layers of clamping skeletons, and cooperating with the colloid wrapping to form an integral pressing structure. In this embodiment, the clamping skeleton is a metal plate-shaped clamping skeleton. The strip is pressed by the plate-shaped clamping skeleton, and the colloid provides a pressing force for multi-layer stacking.

[0062] As Figures 6 - 11 shown, Figure 6 is the support structure diagram of the single-bending skeleton; Figure 7 is the exploded structure diagram of the single-bending skeleton; Figure 8 is the projection structure schematic diagram of the single-bending skeleton; Figure 9 is the support structure diagram of the arc-bending skeleton; Figure 10 is the exploded structure diagram of the arc-bending skeleton; Figure 11 is the projection structure diagram of the arc-bending skeleton.

[0063] In another feasible manner, the pressing portions of the first clamping framework 4 and the second clamping framework 5 are arranged in reverse, that is, the bending directions of the pressing portions of the first clamping framework 4 and the second clamping framework 5 are opposite. In this embodiment, at the relative positions of the first clamping framework 4 and the second clamping framework 5, one side is set as the bending portion 601, and the other side is set as the window opening 602 structure, so that the bending portion 601 at the same height position pushes the strip into the corresponding window opening 602. From the transverse section of the node, the node constitutes a three-layer pressing structure composed of one side of the clamping framework and two layers of strips. Similarly, the strips are arranged in a multi-layer structure in the height direction, and the window openings 602 and the bending portions 601 are arranged alternately in the height direction of the node. The first clamping framework 4 and the second clamping framework 5 form an interlocking structure through the bending portion 601 and the window opening 602 structure, and the nodes are arranged alternately and pressed tightly in the height direction. The nodes, the first clamping framework 4, and the second clamping framework 5 are pressed tightly in multiple layers with dislocation to form self-locking. After being wrapped with colloid, the tensile strength and shear strength are improved simultaneously.

[0064] The present application provides a preferred node clamping structure for a geocell. The first clamping framework 4 and the second clamping framework 5 both have window openings 602 allowing partial strips of the node to pass through, and bending portions 601 for squeezing partial strips to pass through the window openings. The first clamping framework 4 and the second clamping framework 5 are distributed on both sides in the thickness direction of the node, and at the same time, they are adapted to the sheet-like structure in which the first strip 1 and the second strip 2 are mutually attached in the thickness direction of the node. Both the first clamping framework 4 and the second clamping framework 5 are set as plate-shaped clamping frameworks made of hard metal materials.

[0065] At the same time, considering that the first clamping framework 4 and the second clamping framework 5 are distributed on both sides in the thickness direction of the node, and both of them have the window opening 602 and the bending portion 601 structure, and the bending portions 601 and the window openings 602 of the first clamping framework 4 and the second clamping framework 5 are arranged oppositely. When the two squeeze the node, the bending portion 601 abuts against the two mutually attached layers of strips and squeezes them into the window opening 602.

[0066] It can be understood that the first strip 1 and the second strip 2 are tractionally stretched in the length direction. The first clamping framework 4 and the second clamping framework 5 are used to improve the tensile capacity of the strip in the length direction. The first clamping framework 4 and the second clamping framework 5 adopted in this application clamp the nodes at both ends in the length direction, and the bending part 601 is arranged in the middle of the node in the length direction. At the same time, the bending part 601 squeezes the strip in the height direction. For the middle extrusion node structure of the first clamping framework 4 and the second clamping framework 5, integral extrusion can be adopted, or layered / segmented extrusion can be adopted. For example, if the node is bent integrally in height, the window height of the first clamping framework 4 is the node height at this time, and the bending part on the second clamping framework 5 squeezes the strip of the node part into the window as a whole; another example is the layered / segmented extrusion form of the node. The window can cover a partial area of the node strip, or multiple windows can be arranged in the height direction. Correspondingly, multiple windows and multiple bending parts are arranged on the first clamping framework 4, and multiple bending parts and multiple windows are arranged at corresponding positions on the second clamping framework 5. In a corresponding manner of window-bending part, a partial strip of the node strip is squeezed towards the first clamping framework 4, and the remaining part is squeezed towards the second clamping framework 5, thus forming a multi-layer staggered extrusion method, further increasing the tensile capacity and shear capacity.

[0067] As Figures 7 - 9 shown, specifically, the bending part 601 includes multiple first bending parts 81 distributed along the height direction of the first clamping framework 4 and multiple second bending parts 83 distributed along the height direction of the second clamping framework 5; the extending directions of the first bending part 81 and the second bending part 83 are arranged in opposite directions; the first bending part 81 and the second bending part 83 form a complementary structure through the window 602.

[0068] As Figure 7 shown in, the first bending part 81 of the first clamping framework 4 extends in the first direction, and a first window 82 is arranged between two adjacent layers of the first bending parts 81; the second bending part 83 of the second clamping framework 5 extends in the second direction, and a second window 84 is arranged between two adjacent layers of the second bending parts 83.

[0069] During the process that the first clamping framework 4 and the second clamping framework 5 are pressed on both sides in the thickness direction of the node in the thickness direction, the first bending part 81 pushes the first part of the node strip, the second bending part 83 pushes the second part of the node strip, the first bending part 81 extends into the second window 84, and the second bending part 83 extends into the first window 82.

[0070] By means of the first bending part 81 and the second bending part 83 being opposite to the corresponding windowing positions, the node strip is formed into two parts squeezed in opposite directions and opened with each other. In this way, the strip of the node forms a fitting structure with the corresponding first clamping framework 4 and the second clamping framework 5 in a layered manner. After being further wrapped by the colloid, the colloid is filled between the strip and the clamping framework. And after the node strip is opened along the thickness direction by the clamping framework, the opened strip forms a central cavity 91 in the vertical direction. The colloid is simultaneously filled in the central cavity 91 and the periphery of the node. The colloid and the node component are tightly combined, further improving the bonding strength.

[0071] In order to further illustrate the attachment structure of the first clamping framework 4 and the second clamping framework 5 to the node strip, the structures and clamping states of the first clamping framework 4 and the second clamping framework 5 are reflected in combination with the projection direction structure.

[0072] As Figure 8 and Figure 9 shown in, in this application, the first bending part 81 and the second bending part 83 are respectively one-way bending parts whose projections along the height direction are in a one-way bending shape. The first bending part 81 and a windowing are simultaneously arranged on the first clamping framework 4, the second bending part 83 and a windowing are simultaneously arranged on the second clamping framework 5. Both the first bending part 81 and the second bending part 83 are arranged as bending structures facing one side in the thickness direction, so that the first clamping framework 4 and the second clamping framework 5 are in a symmetrical structure in the projection direction.

[0073] In a specific embodiment of this case, the bending part is provided with a clamping tooth 85 extending towards the windowing direction. A clamping gap 86 for accommodating a part of the squeezed strip is reserved between the clamping tooth 85 and the root of the bending part.

[0074] Furthermore, the first clamping framework 4 has a clamping and limiting bending part 87 higher than the second clamping framework 5 for clamping and limiting both ends of the node in the height direction.

[0075] For the clamping structure with a one-way bending part, the strip at the node position is pushed into the window by extrusion. To ensure the stability of the strip clamping structure by the first clamping skeleton 4 and the second clamping skeleton 5 during the glue injection process, clamping teeth 85 are provided on the bending structures of the first bending part 81 and the second bending part 83. The protruding direction of the clamping teeth 85 faces the window direction corresponding to the bending structure. By providing the clamping teeth 85, after the first bending part 81 and the second bending part 83 both extend into the window structure, the clamping teeth 85 abut against the inner side of the extrusion of the bending structure, and the outer side of the bending structure extrudes the strip at the node. A clamping gap 86 for accommodating the double-layer strip is reserved between the clamping teeth 85 and the root of the bending structure, so that the strip is pressed tightly against the root of the bending structure, and the first clamping skeleton 4 and the second clamping skeleton 5 can form a self-locking structure through the clamping teeth 85, avoiding the first clamping skeleton 4 and the second clamping skeleton 5 from being disengaged due to the elastic pressing of the strip.

[0076] Considering that during the construction process of the geocell, it is not only pulled along the length direction of the strip, but also pulled in the height direction, the two ends in the length direction of the first strip 1 and the second strip 2 are clamped by the first clamping skeleton 4 and the second clamping skeleton 5. Specifically, the height of the first clamping skeleton 4 is higher than that of the second clamping skeleton 5, the height of the second clamping skeleton 5 is equivalent to that of the strip, and both ends in the height direction of the second clamping skeleton 5 are the second bending parts 83; the clamping bending parts 87 are also provided at both ends in the height direction of the first clamping skeleton 4, the width of the clamping bending parts 87 is not greater than the width of the first bending part 81, and the height between the two clamping bending parts 87 at both ends is equivalent to the height of the strip, so that the windows adjacent to the two clamping bending parts 87 are opposite to the second bending part 83. By providing the clamping bending part 87 structure higher than both ends in the height direction of the strip, after the strip is extruded into the window, it will be limited in height between the two clamping bending parts at both ends, thus realizing the limitation of the strip in the height direction.

[0077] As Figures 12 - 14 shown, Figure 12 is the support structure diagram of the double-bending skeleton; Figure 13 is the double-bending skeleton diagram; Figure 14 is the projection diagram of the double-bending skeleton.

[0078] In another specific embodiment of the present case, the first bending portion 81 and the second bending portion 83 are bidirectional bending portions projected in a wave shape along the height direction. The first bending portion 81 and the second bending portion 83 can also adopt a multi-channel bending structure in the form of a wave. At this time, for strips with nodes at the same height, the bending structure of the wave structure cannot simultaneously satisfy the extrusion action in two directions. Then the strips with nodes are pressed tightly between the first bending portion 81 and the second bending portion 83, that is, the strips at the same height (horizontally) are extruded in two directions through two layers of bending structures, and the two layers of strips at adjacent heights (vertically) are bent in opposite directions, so that the strips are extruded through multiple layers of bidirectional bending portions.

[0079] like Figure 14 In the projection structure shown, the first bending portion 81 is in an "8"-shaped structure, that is, the first bending portions 81 arranged in layers are arranged in opposite directions in the height direction between two adjacent first bending portions 81, forming a bidirectional extrusion structure for the strip. The bending structure of the second bending portion 83 is the same as that of the first bending portion 81.

[0080] In this embodiment, the node is arranged with a cutting seam located at the intersection of the bending part and the window. Since the strips are squeezed in two directions in a layered manner at different heights, in order to avoid pulling the strips in the height direction, the strips are cut to form a cutting seam at the intersection of the bending part and the window with a matching relationship between the two adjacent layers, so that a multi-layer distribution structure is formed for the strips, so that when the strips of each layer are squeezed, the strips between the adjacent layers will not be pulled and will be pulled out from between the first clamping frame 4 and the second clamping frame 5.

[0081] For the one-way bending portion and the two-way bending portion, the bending structures are preferably triangular structures.

[0082] like Figures 9 - 11 As shown, in another specific embodiment of the present case, the first bending portion 81 and the second bending portion 83 are respectively bending portions having a rectangular, square, trapezoidal, or arbitrary polygonal, arc shape projected in the height direction. The projection of the first bending portion 81 and the second bending portion 83 in the height direction of the node is used to illustrate the skeleton bending structure inside the colloid. Through various shapes such as rectangular, square, trapezoidal, or arbitrary polygonal, arc shape, etc., the size of the node and the length of the strip constituting the node can be adjusted, so that node structures of different specifications and strengths can be prepared.

[0083] In a preferred structure of the present application, an arc-shaped bending portion is adopted. If both the first bending portion 81 and the second bending portion 83 adopt arc-shaped bending portions, then both the first bending portion 81 and the second bending portion 83 are arc-shaped bending structures. After the corresponding first clamping skeleton 4 and second clamping skeleton 5 are assembled in place, the first bending portion 81 and the second bending portion 83 form a circular or oval projection in the projection direction.

[0084] Furthermore, a vertical cavity channel 133 is formed between the first bending portion 81 and the second bending portion 83. A hollow plunger 134 for tensioning the first clamping skeleton 4 and the second clamping skeleton 5 is filled in the cavity channel 133; a plurality of groups of glue injection holes 105 corresponding to the window positions are formed on the side wall surface of the hollow plunger 134. Since both the first bending portion 81 and the second bending portion 83 are arc-shaped bending portions, the hollow plunger 134 is an arc-shaped hollow plunger with a circular or oval cross-section.

[0085] To set the positioning method of the engaging teeth 85, a tooth engaging structure needs to be reserved during the forming process of the first clamping skeleton 4 and the second clamping skeleton 5. Another preferred method is provided in this embodiment. It can be understood that since the first bending portion 81 and the second bending portion 83 are bent in two opposite directions along the thickness direction of the strip, a vertical cavity channel will be formed in the thickness direction for both the single-direction bending portion, the two-direction bending portion, and the arc-shaped bending portion. By filling the vertical cavity channel with a hollow plunger, the vertical cavity channel formed by the extrusion of the first clamping skeleton 4 and the second clamping skeleton 5 by the hollow plunger is filled, and at the same time, the pressing of the first clamping skeleton 4 and the second clamping skeleton 5 against the strip is realized. The hollow plunger needs to be injected with glue to be formed into one body with the skeleton and the node. Glue injection holes 105 corresponding to the window positions are formed on the hollow plunger, so that the glue material during the pouring process can pass through the glue injection holes 105 and fill into the interior of the hollow plunger 134, and the close fitting of the colloid can be realized outside the hollow plunger 134, further improving the strength of the integral structure.

[0086] Furthermore, as Figure 12 shown, a vertical cavity channel 133 with a substantially rectangular structure is formed between the first bending portion 81 and the second bending portion 83. A rectangular hollow plunger 104 for tensioning the first clamping skeleton 4 and the second clamping skeleton 5 is filled in the cavity channel 133; a plurality of groups of glue injection holes 105 corresponding to the window positions are formed on the side wall surface of the rectangular hollow plunger 104.

[0087] For the first clamping skeleton 4 and the second clamping skeleton 5 with single - direction bending, as well as for the clamping skeleton with a two - way bending part, the angle of the bending structure can be set to 0 - 180°, preferably between 60° - 120°. Then the vertical cavity channel formed by the first bending part 81 and the second bending part 83 is of a basic rectangular or basic rhombic structure. Then, the rectangular hollow plunger 104 is set to a basic rectangular structure or a basic rhombic structure, and glue injection holes 105 are also arranged on the rectangular hollow plunger 104, which is convenient for the rectangular hollow plunger 104 and the node to form an integral structure.

[0088] In a specific embodiment of this case, the node is formed by bonding strips of a predetermined length.

[0089] Along the length direction of the strip, the middle parts of the first clamping skeleton 4 and the second clamping skeleton 5 are closely attached to form a pressing part 6, and the two ends of the first clamping skeleton 4 and the second clamping skeleton 5 form an angle - defining part 7 for shaping with the opening angles of the first strip 1 and the second strip 2. Preferably, the opening angle of the angle - defining part 7 is 0° - 160°.

[0090] Preferably, both the first clamping skeleton 4 and the second clamping skeleton 5 are clamping skeletons prepared from hard metal plates.

[0091] Both the first clamping skeleton 4 and the second clamping skeleton 5 are prepared from hard metal plates. Of course, they can also be prepared from materials such as hard plastics.

[0092] Since the first clamping skeleton 4 and the second clamping skeleton 5 bend and press the middle part of the strip at the node position, the node needs to reserve a certain length to meet the deformation requirements of bending and reserve the cutting - length requirements of the cutting seam. After the strip is extruded, it can be bent conformally between the bending structure and the window. The first clamping skeleton 4 and the second clamping skeleton 5 are provided with bending structures in the middle of the strip length direction. At both ends of the node length direction, the first clamping skeleton 4 and the second clamping skeleton 5 can be a plate structure in tight fit to press the two layers of the first strip 1 and the second strip 2 into one body; or at both ends of the node length direction, the first clamping skeleton 4 and the second clamping skeleton 5 have a certain opening angle. In this embodiment, it is preferably 0 - 160°, so that the geocell wrapped with colloid forms a triangular or polygonal honeycomb structure.

[0093] Based on the above - mentioned node clamping structure of the geocell, the present application also provides a geocell, which includes multiple strips arranged along the thickness direction of the strip. Multiple nodes are formed between adjacent two strips, and the nodes have the node clamping structure of the geocell as described in any one of the above.

[0094] Since the geocell provided by the present application adopts the node clamping structure of the geocell in the above - mentioned embodiment, the beneficial effects brought by the node clamping structure of the geocell can be referred to the above - mentioned embodiment.

[0095] As Figure 15 shown Figure 15 is a schematic diagram of the pouring cavity structure of the geocell pouring mold provided by this application.

[0096] This application also provides a geocell pouring mold for the colloid pouring of the node clamping structure of the geocell as described above, including:

[0097] A mold body, in the middle of the mold body 161, there is a pouring cavity 162 for pouring the node positions of the first strip 1 and the second strip 2, a clamping cavity 163 that communicates with the pouring cavity 162 and guides and leads out the extending ends of the first strip 1 and the second strip 2; inside the mold body 161, there is also an ejection device 164 arranged opposite to the window position, which respectively ejects and presses the bent parts of the first clamping skeleton and the second clamping skeleton.

[0098] The colloid 3 is an injection colloid. During the injection process, the colloid 3 is in a molten fluid state. The melting temperature of the injection 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 may be in a slightly melted state due to the melting temperature of the colloid, improving the bonding ability between the colloid and the strip.

[0099] At the same time, the strip has certain elastic properties and is made of high-strength materials, such as polypropylene (PP) or polyethylene (PE). These materials have good wear resistance, chemical stability, resistance to light-oxygen aging, and acid and alkali resistance, and are suitable for different soil and desert soil conditions. There is a reinforcing core inside the strip, which can be a steel strip, steel wire, polypropylene stretched tape, polyethylene terephthalate stretched tape, 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.

[0100] 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 corrosion resistance, with 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 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 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.

[0101] 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 one of 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 (nylon 6), PA12 (nylon 12), TPEE (thermoplastic polyester elastomer), or can be injection-molded by mixing multiple of them.

[0102] The geocell casting mold provided by this application can achieve the injection of the casting colloid into all positions of the nodes of the geocell by clamping the nodes of the geocell and ejecting and expanding multiple layers of strips in the casting cavity, realizing the stability of the combination of the geocell node structure and the colloid, and ensuring the node strength.

[0103] The casting mold includes a mold body 161. A casting cavity 162 for casting the node positions of the first strip 1 and the second strip 2 is arranged in the middle of the mold body 161, and a clamping cavity 163 for clamping the first strip 1 and the second strip 2 is provided; an ejecting device 164 that can be telescoped into the casting cavity 162 is arranged on the mold body 161.

[0104] The mold body 161 is composed of four parts, forming four independent fixed-angle modules. Specifically, it includes a left fixed-angle module 1611, an upper fixed-angle module 1612, a right fixed-angle module 1613, and a lower fixed-angle module 1614. The four fixed-angle modules can all be set as movable structures, or two fixed-angle modules that are opposite up and down can be set as movable, while the left and right two are fixed layout structures. The four fixed-angle modules are all triangular block structures. The middle parts of the four fixed-angle modules enclose a middle casting cavity 162, and a gap for the strip to pass through is reserved between adjacent fixed-angle modules, and a clamping cavity 163 that allows the strip to pass through is formed during the casting process. The ejecting device 164 is a ejector rod arranged in the mold body 161. The ejecting position of the ejector rod is opposite to the glue injection hole on the hollow plunger. During casting, the ejector rod extends into the openings of the first clamping skeleton 4 and the second clamping skeleton 5, and is fixed on the first bending part 81 and the second bending part 83 corresponding to the opening positions, that is, the stable support for the clamping structures of the first clamping skeleton 4 and the second clamping skeleton 5 is realized at the same time. During the casting process, the ejecting device 164 gradually withdraws, so that the colloid fills the glue injection hole position. Of course, for the colloid wrapping form with a hollow plunger, the ejector rod can also be withdrawn after the colloid is shaped, forming a subtractive hole inside the colloid to reduce weight and cost.

[0105] The casting cavity 162 is filled with colloid to form a node structure, and the inner wall surface structure of the casting cavity 162 is the outer peripheral shape of the colloid. The cross-sectional shape of the colloid is the same, and it can adapt to various shapes of bending parts of the clamping skeleton inside the colloid. Correspondingly, the outer shape of the colloid can be set in various shapes to ensure the uniformity of the packaging thickness for different bending structures. The boundary of the colloid is restricted by the inner wall surface structure of the casting cavity 162. The projection of the casting cavity 162 in the height direction of the node can be set as a triangle, a rhombus, a square, a rectangle, a trapezoid, a circle, an ellipse or any polygon to correspond to the clamping skeleton structure inside it, improving the stability of the colloid wrapping structure.

[0106] 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 rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A node clamping structure of a geocell, characterized in that, It comprises a first strip and a second strip, wherein a connection node is provided between the first strip and the second strip, It also includes a first clamping frame and a second clamping frame pressed on both sides of the node in the thickness direction; The first clamping frame and the second clamping frame are both provided with a pressing portion for bending and pressing the node along the thickness direction; The nodes, the first clamping frame and the second clamping frame are wrapped by colloid.

2. The node clamping structure of the geocell according to claim 1, characterized in that The first clamping frame and the second clamping frame both have windows for allowing part of the strip of the node to pass through, and bending parts for squeezing the part of the strip to pass through the windows.

3. The node clamping structure of the geocell according to claim 2, characterized in that, The bending portion includes a plurality of first bending portions distributed along the height direction of the first clamping frame, and a plurality of second bending portions distributed along the height direction of the second clamping frame; The first bending portion and the second bending portion are arranged in opposite directions of extension; The first bending portion and the second bending portion form a complementary structure through the opening.

4. The node clamping structure of the geocell according to claim 3, characterized in that, The first bending portion and the second bending portion are both one-way bending portions projected in a one-way bending shape along the height direction.

5. The node clamping structure of the geocell according to claim 3, characterized in that The first bending portion and the second bending portion are bidirectional bending portions projected into a wave shape along the height direction.

6. The node clamping structure of the geocell according to any one of claims 2-5, characterized in that, A cutting seam is arranged on the node, and the cutting seam corresponds to the intersection position of the bending portion and the window.

7. The node clamping structure of the geocell according to any one of claims 2-5, characterized in that The bending portion is provided with a latching tooth extending in the direction of the window opening, and a latching gap for accommodating the part of the strip after extrusion is reserved between the latching tooth and the root of the bending portion.

8. The node clamping structure of the geocell according to claim 6, characterized in that, The second clamping frame has two clamping bending parts located at both ends in the height direction, and the node is clamped between the two clamping bending parts in the height direction.

9. The node clamping structure of the geocell according to claim 3, characterized in that, The first bending portion and the second bending portion are respectively bending portions having a rectangular, square, trapezoidal, or any polygonal or arc shape when projected along the height direction.

10. The node clamping structure of the geocell according to claim 9, characterized in that, A vertical cavity channel is formed between the first bending portion and the second bending portion, and the cavity channel is filled with a hollow plunger for tensioning the first clamping frame and the second clamping frame, and the hollow plunger is a curved hollow plunger with a substantially elliptical cross section; A plurality of groups of glue injection holes corresponding to the window opening positions are arranged on the side wall surface of the hollow plunger.

11. The node card mounting structure according to any one of claims 4 or 5, characterized in that A vertical cavity channel of a substantially rectangular structure is formed between the first bending portion and the second bending portion, and the cavity channel is filled with a rectangular hollow plunger for tensioning the first clamping frame and the second clamping frame, and the rectangular hollow plunger is a rectangular hollow plunger with a substantially rectangular cross section; A plurality of groups of glue injection holes corresponding to the window opening positions are arranged on the side wall surface of the rectangular hollow plunger.

12. The node clamping structure of the geocell according to claim 1, characterized in that, The node is formed by laminating strips of predetermined length; Along the length direction of the strip, the middle parts of the first clamping frame and the second clamping frame are tightly attached to form the clamping part, and the two ends of the first clamping frame and the second clamping frame form an angle-fixing part for shaping the opening angle of the first strip and the second strip.

13. The node clamping structure of the geocell according to claim 12, characterized in that, The fixed angle portion opens at an angle of 0°-160°.

14. The node clamping structure of the geocell according to claim 1, characterized in that, The first clamping frame and the second clamping frame are both clamping frames made of hard metal plates or hard plastics.

15. The node clamping structure of the geocell according to claim 1, characterized in that, The first strip and the second strip are HDPE strips, PP strips or PET strips.

16. The node clamping structure of the geocell according to claim 1, characterized in that, The colloid is injection molded from one or more of the materials of TPE, TPR, TPU, EVA, EMA, EEA, PVC, PP, PE, HDPE, SBS, ABS, PA6, PA12, TPEE, 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 clamping structure of the geocell as described in any one of claims 1-16.

18. A geocell casting mold for casting the colloid of the node clamping structure of the geocell as described in 1-16, comprising: A mold body, a casting cavity for casting the node positions of the first strip and the second strip is arranged in the middle of the mold body, and the projection shape of the casting cavity along the height direction of the node is triangular, diamond-shaped, square, rectangular, trapezoidal, circular, oval or any polygon; A clamping cavity communicating with the casting cavity and guiding and leading out the extending ends of the first strip and the second strip; An ejection device is further arranged in the mold body, which is arranged opposite to the window position and ejects and presses the bent parts of the first clamping skeleton and the second clamping skeleton respectively.

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