A dowel clamp structure

Abstract

A kind of tenon structure, it is related to geocell technical field, including first tenon, second tenon and locking pin, multiple extrusion grooves and extrusion structure are arranged on the first tenon and second tenon respectively, it is characterized in that, vertical through-hole is arranged on the extrusion structure, the first tenon and second tenon are formed into polygonal column after tenon joint, circular through locking hole for accommodating locking pin insertion is formed in the middle of the polygonal column.The utility model is formed into polygonal column by the first tenon and second tenon tenon joint and cooperates the structural design of locking pin, effectively improves connection strength and deformation resistance, while simplifying construction technology, with the advantages of stable structure and convenient construction.

Description

Technical Field

[0001] This utility model relates to the field of geocell technology, and more specifically, to a tenon-and-mortise structure. Background Technology

[0002] Geocells are a three-dimensional mesh-like cell structure that can expand and contract freely, can be folded during transportation, and can be stretched into a mesh during construction. Loose materials such as soil, gravel, and concrete are then filled in to form a structure with strong lateral confinement and high rigidity. Existing geocells are mainly fixed and connected by welding, riveting, injection molding, and other methods.

[0003] Chinese patent CN215758967U discloses a tenon clamp structure, which includes a locking pin and a first tenon clamp and a second tenon clamp that can be tenoned relative to each other. After tenoning, the tenon clamp structure forms a columnar body. This arc-shaped design may be more prone to deformation when subjected to external forces, affecting the stability of the overall structure. Furthermore, the arc-shaped first and second tenons clamps require more precise positioning and alignment when stamped using a stamping mechanism, increasing the construction difficulty. Utility Model Content

[0004] The purpose of this utility model is to solve the problems mentioned in the background art, and then to propose a tenon clamp structure.

[0005] The technical solution adopted by this utility model to solve its technical problem is: A tenon clamp structure includes a first tenon clamp, a second tenon clamp, and a locking pin. The first tenon clamp and the second tenon clamp are each provided with multiple pressing grooves and pressing structures. The pressing structure is provided with a vertical through hole. The first tenon clamp and the second tenon clamp are tenoned together to form a polygonal column. A circular through locking hole for accommodating the insertion of the locking pin is formed in the middle of the polygonal column.

[0006] Furthermore, the polygonal prism is hexagonal.

[0007] Furthermore, reinforcing ribs are formed at the joints between the extrusion structure and the first and second tenons on both sides.

[0008] Furthermore, the extrusion structure is inclined towards the middle on both the upper and lower sides to form an extrusion groove.

[0009] Furthermore, a plurality of rubber protrusions are formed on the surface of the locking pin, and an annular groove that mates with the rubber protrusions is formed on the inner wall of the vertical through hole.

[0010] Compared with the prior art, the beneficial effects of this utility model are: the structural design of this utility model, which forms a polygonal column by mortise and tenon joint of the first tenon and the second tenon and is combined with the locking pin, effectively improves the connection strength and resistance to deformation, while simplifying the construction process, and has the advantages of structural stability and convenient construction. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is an exploded view of the present invention; Figure 4 This is a schematic diagram of the structure of the first tenon clamp; Among them: 1 first tenon, 2 second tenon, 3 locking pin, 100 extrusion groove, 11 extrusion structure, 12 vertical through hole, 111 reinforcing rib, 301 circular through locking hole. Detailed Implementation

[0012] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. The components of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application. It should be noted that similar reference numerals and letters in the following drawings indicate similar items; therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0013] In existing technologies, geocells, as three-dimensional mesh structures, are often connected using welding, riveting, or injection molding. Existing tenon-and-mortise structures use curved tenons to form columnar bodies; however, curved structures are prone to deformation under external forces, and precise alignment and positioning are required during stamping, making construction difficult. These defects lead to insufficient connection stability, affecting the overall structural reliability.

[0014] To address the aforementioned issues, existing curved tenon and mortise structures are prone to uneven stress distribution under load, leading to localized deformation. The alignment accuracy of the curved components during manufacturing directly affects assembly quality and increases construction complexity. To resolve these problems, a connection structure with more stable geometry and higher manufacturing tolerance is needed. Analysis of the symmetry characteristics of polygonal structures reveals that they can form a uniform stress transmission path, while the straight-edge structure facilitates positioning and machining with stamping dies. Further considering connection strength, a deformation interlocking mechanism needs to be introduced during the tenon joint process, combined with radial constraint devices to form multiple layers of fixation.

[0015] Therefore, this application proposes a tenon clamp structure, including a first tenon clamp, a second tenon clamp, and a locking pin. The first tenon clamp and the second tenon clamp are each provided with a plurality of extrusion grooves and extrusion structures. The extrusion structure is provided with a vertical through hole. The first tenon clamp and the second tenon clamp are tenoned together to form a polygonal column. A circular through locking hole for accommodating the insertion of the locking pin is formed in the middle of the polygonal column.

[0016] The first and second tenons refer to plastic injection-molded parts that interlock via tenon joints, forming a concave-convex mating structure on their surfaces. The extrusion groove is a recessed area on the surface of the tenon clamp, which can be designed as a long, narrow hole to accommodate the deformation of adjacent components during the tenon joint process. The extrusion structure refers to the protruding part on the surface of the tenon clamp, which can be designed as a wedge-shaped block with beveled edges, and its vertical through-hole is used for the insertion of the locking pin. The polygonal prism refers to the polyhedral structure formed after the two tenons are joined, which can be designed as a regular hexagonal cross-section with equal sides and angles. The locking pin is a fastening element inserted into the through-hole, which can be a cylindrical rubber material with annular protrusions on its surface.

[0017] Specifically, the two tenons are joined by interlocking with the pressing structure through pressing grooves, and the straight edges of the polygonal column form a uniform stress distribution surface. During the tenoning process, the beveled surface of the pressing structure guides the tenons to produce slight plastic deformation, resulting in an interference fit at the contact surface. After the locking pin is inserted into the through hole, its outer diameter is slightly larger than the hole diameter, generating radial expansion force through elastic deformation.

[0018] Compared to existing technologies, this solution utilizes a polygonal column structure. The straight-edge polygonal structure has a higher moment of inertia than the curved structure, resulting in less deformation under the same load. The machining accuracy of the straight-edge stamping die is easier to control, reducing sensitivity to alignment errors. The beveled design of the extrusion groove and the extrusion structure provides a self-centering function during the tenon joint process, making it easier to achieve a tight fit compared to a purely curved tenon joint.

[0019] Through the above technical solutions, this application effectively improves the deformation resistance of the tenon and mortise structure, and the rigid frame formed by the polygonal column can evenly distribute external loads. The inclined guide design of the extrusion structure simplifies the assembly and positioning process and reduces construction difficulty.

[0020] This application further proposes that the polygonal prism adopt a hexagonal structure.

[0021] Specifically, in the hexagonal prism structure formed by the tenoning of the first and second tenons, the six symmetrical planes serve as positioning references during the stamping process. Operators or machinery only need to align the planes of the tenons with the corresponding planes of the stamping die to complete the positioning, without the need for additional adjustment of the curved surface angles. When subjected to external loads, the six planes decompose the force into supporting forces in six directions. Each plane forms a 120-degree angle with its adjacent plane, ensuring that the supporting force is evenly distributed circumferentially, preventing excessive force in one direction from causing deformation. In the fit between the hexagonal prism and the internal circular locking hole, the six planes form tangential contact with the hole wall, limiting the radial displacement of the locking pin through multi-point constraints.

[0022] The existing arc-shaped tenon clamp structure requires precise control of the curvature of the surface during stamping to ensure alignment, while the hexagonal planar structure simplifies the processing by positioning with a reference surface; the arc-shaped structure is prone to local stress concentration and deformation under stress, while the uniform support surface of the hexagonal structure can distribute the load and improve the bending resistance.

[0023] Through the above technical solution, this application solves the problems of difficult positioning and easy deformation under stress in the processing of tenon and mortise structure. The planar reference positioning during the processing reduces the construction difficulty, and the distribution of hexagonal support surfaces effectively enhances the structural stability.

[0024] This application further proposes that reinforcing ribs be formed at the joints of the first tenon and the second tenon on both sides of the extrusion structure.

[0025] The reinforcing ribs are raised plate-like structures installed in the area where the extrusion structure meets the tenon joint. Their thickness can be 1.2-1.5 times the thickness of the base plate. This structure increases the cross-sectional area of ​​the joint, improving bending resistance and forming rigid support points to optimize stress transmission paths.

[0026] Compared to existing technologies, conventional tenon and clamp structures lack reinforcement at the joint, making stress concentration areas prone to plastic deformation, and requiring high-precision fixtures for positioning during stamping. This solution actively strengthens weak areas by adding reinforcing ribs at the joint.

[0027] This application further proposes an extrusion structure with the upper and lower sides angled towards the middle to form an extrusion groove.

[0028] The term "sloping towards the middle on both sides of the extrusion structure" refers to the two side walls of the extrusion groove extending sloping towards the middle from the top and bottom. This sloping structure can guide the external load to be distributed along the sloping direction, reducing stress concentration in the vertical direction.

[0029] This application further proposes that a plurality of rubber protrusions are formed on the surface of the locking pin, and an annular groove that mates with the rubber protrusions is formed on the inner wall of the vertical through hole.

[0030] The rubber protrusion rings refer to the annular protrusions spaced apart along the axial direction of the locking pin. Specifically, they can be formed by coating the metal pin surface with rubber material using a vulcanization process, utilizing the elastic deformation capacity of the rubber to generate radial compression during insertion. The annular groove refers to the annular groove vertically penetrating the inner wall of the hole. It can be formed through machining or molding, and is used to create a concave-convex interlocking structure with the rubber protrusion rings.

[0031] Specifically, when the locking pin is inserted into the vertical through hole, the rubber protrusion ring undergoes radial compression deformation under the pressure of the hole wall, generating a continuous elastic restoring force. This creates a tight contact between the rubber protrusion ring and the hole wall, increasing frictional resistance and limiting axial sliding. Simultaneously, under lateral loads, the rubber protrusion ring embeds into the annular groove, forming a mechanical locking structure that resists shear deformation through rigid contact. During this process, the elastic properties of the rubber material allow for a certain positional deviation of the locking pin during assembly, while the geometric fit between the annular groove and the protrusion ring provides precise positioning.

[0032] Compared to existing technologies, conventional tenon and mortise clamp structures use smooth locking pins and through-holes, relying solely on friction to resist external loads, making them prone to loosening due to vibration or impact. This solution, however, utilizes the dual action of a rubber protruding ring and an annular groove. It compensates for assembly errors through elastic deformation and achieves rigid positioning through a concave-convex interlocking structure, improving anti-slip capability while reducing the requirements for machining precision.

[0033] Through the above technical solution, this application effectively prevents the locking pin from shifting when subjected to axial tensile force or lateral shear force, ensuring the stability of the tenon and mortise connection structure, while simplifying the alignment process of the locking pin and the hole.

[0034] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A tenon clamp structure, comprising a first tenon clamp, a second tenon clamp, and a locking pin, wherein the first tenon clamp and the second tenon clamp are each provided with a plurality of pressing grooves and pressing structures, characterized in that, The extrusion structure has a vertical through hole. The first tenon and the second tenon are joined together to form a polygonal column. A circular through locking hole for accommodating the insertion of a locking pin is formed in the middle of the polygonal column.

2. The tenon and mortise structure according to claim 1, characterized in that, The polygonal prism is hexagonal.

3. A tenon and mortise clamp structure according to claim 1 or 2, characterized in that, Reinforcing ribs are formed at the joints between the extrusion structure and the first and second tenons on both sides.

4. The tenon and mortise structure according to claim 1, characterized in that, The extrusion structure is inclined towards the middle on both the upper and lower sides to form an extrusion groove.

5. A tenon clamp structure according to claim 3, characterized in that, The locking pin has several rubber protrusions on its surface, and the vertical through hole has an annular groove on its inner wall that mates with the rubber protrusions.

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