Graphite polyurethane sandwich panel
By integrating the reinforced frame and panel of the graphite polyurethane sandwich panel with welding, using a honeycomb reinforcement structure, and designing connecting grooves and buckles, the shortcomings of traditional sandwich panels in terms of structural strength and connection methods are solved, achieving improvements in high load-bearing capacity, easy installation, and impact resistance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TIANJIN ZHIHAI TONGCHENG TECH CO LTD
- Filing Date
- 2025-02-28
- Publication Date
- 2026-06-05
AI Technical Summary
Traditional sandwich panels have shortcomings in structural strength and connection methods, making it difficult to meet the high load-bearing and easy installation requirements of modern construction and industrial fields. They are also prone to deformation and cracking in harsh environments.
The design employs graphite polyurethane sandwich panels, including an integral welded reinforcing frame and panel, a honeycomb reinforcement structure on the inner side of the panel, and a unique connection method using connecting grooves and fasteners with fastening bolts. This improves rigidity and load-bearing capacity, and enhances impact resistance through the honeycomb reinforcement structure.
It significantly improves the overall rigidity and load-bearing capacity of sandwich panels, enables quick and stable connections, enhances impact resistance, simplifies the installation process, and extends service life.
Smart Images

Figure CN224325949U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sandwich panels, and more specifically, to a graphite polyurethane sandwich panel. Background Technology
[0002] Traditional sandwich panels often suffer from deficiencies in structural strength and connection methods, making it difficult to meet the demands of modern construction and industrial sectors for high load-bearing capacity and ease of installation. Especially under harsh environmental conditions, traditional sandwich panels are prone to deformation and cracking, affecting their performance and safety. Therefore, developing a sandwich panel with a robust structure, convenient connections, and high load-bearing capacity is of paramount importance.
[0003] How to invent a graphite polyurethane sandwich panel to improve these problems has become an urgent problem to be solved by those skilled in the art. Utility Model Content
[0004] To overcome the above shortcomings, this utility model provides a graphite polyurethane sandwich panel, aiming to improve upon the deficiencies of traditional sandwich panels in terms of structural strength and connection methods, which make it difficult to meet the demands of modern construction and industrial fields for high load-bearing capacity and easy installation. Especially under harsh environmental conditions, traditional sandwich panels are prone to deformation and cracking.
[0005] This utility model is implemented as follows: a graphite polyurethane sandwich panel includes two oppositely arranged panels, a core material between the two panels, and the two panels are fixedly connected by a reinforcing frame. A connecting structure is provided on the surface of each panel away from the core material.
[0006] In a preferred embodiment of this invention, each panel has an integrally formed honeycomb reinforcement structure on the side facing the core material.
[0007] In a preferred embodiment of this utility model, the reinforcing frame is integrally welded to the two panels.
[0008] In a preferred embodiment of this utility model, the connecting structure includes four connecting grooves respectively opened at both ends and both sides of one side surface of the panel, and connecting buckles. The two ends of the connecting buckles are respectively engaged in the corresponding connecting grooves opened on two adjacent panel surfaces and connected by fasteners.
[0009] In a preferred embodiment of this utility model, one end of each connecting groove and both ends of each connecting buckle are regular polygonal structures.
[0010] In a preferred embodiment of this utility model, each of the connecting buckles has an assembly through hole on both ends, a fastening bolt is inserted into each of the assembly through holes, one end of each fastening bolt is threaded into a corresponding threaded hole, and each threaded hole is located on the inner wall of the bottom of the corresponding connecting groove.
[0011] In a preferred embodiment of this utility model, each of the threaded holes is a blind hole.
[0012] The beneficial effects of this utility model are as follows: The graphite polyurethane sandwich panel obtained through the above design, when in use, features an integrated welded design between the reinforcing frame and the panel, as well as a honeycomb reinforcement structure on the inner side of the panel, significantly improving the overall rigidity and load-bearing capacity of the sandwich panel. The unique connection structure, including connecting grooves and connecting buckles, combined with fastening bolts, enables a quick and stable connection between sandwich panels, improving installation efficiency. Attached Figure Description
[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.
[0014] Figure 1 This is a three-dimensional schematic diagram of several overall connection states provided in the embodiments of this utility model;
[0015] Figure 2 A perspective view illustrating the connection structure between the panel and the reinforcing frame provided for an embodiment of this utility model;
[0016] Figure 3 A perspective view of the overall separable structure provided for an embodiment of this utility model;
[0017] Figure 4 A perspective view of the overall structure of the panel provided for an embodiment of this utility model;
[0018] Figure 5 A three-dimensional schematic diagram of the overall separation structure of the connection structure provided for the embodiment of this utility model.
[0019] In the diagram: 1-panel; 2-core material; 3-reinforcing frame; 101-honeycomb reinforcement structure; 102-connecting groove; 103-connecting buckle; 104-assembly through hole; 105-fastening bolt; 106-threaded hole. Detailed Implementation
[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0021] Please see Figures 1 to 5 This utility model provides a technical solution: a graphite polyurethane sandwich panel, including two oppositely arranged panels 1, a core material 2 between the two panels 1, and the two panels 1 are fixedly connected by a reinforcing frame 3. A connecting structure is provided on the surface of each panel 1 away from the core material 2.
[0022] Please see Figures 2 to 4 Each panel 1 has an integrally formed honeycomb reinforcement structure 101 on the side of the panel facing the core material 2.
[0023] The honeycomb reinforcement structure 101 not only increases the rigidity and strength of the panel, but also improves the energy absorption capacity of the panel 1 and enhances the impact resistance of the sandwich panel.
[0024] Furthermore, the reinforcing frame 3 is integrally welded to the two panels 1.
[0025] The integrated welding design ensures a firm connection between the reinforcing frame 3 and the panel 1, avoiding loosening and detachment during long-term use. It also provides effective support, enhances the overall impact resistance, and relatively protects the structure of the internal core material 2, extending the overall service life.
[0026] Please see Figure 5 The connection structure includes four connection slots 102 respectively opened at both ends and both sides of one side surface of panel 1, and a connection buckle 103. The two ends of the connection buckle 103 are respectively snapped into the corresponding connection slots 102 opened on the surfaces of two adjacent panels 1 and connected by fasteners.
[0027] The design of the connection structure makes the connection between sandwich panels more flexible and convenient.
[0028] Furthermore, one end of each connecting groove 102 and both ends of each connecting buckle 103 are regular polygonal structures.
[0029] The design of the regular polygon structure facilitates precise alignment and quick installation of the connecting slot 102 and the connecting buckle 103, thereby improving connection efficiency.
[0030] Furthermore, each connecting buckle 103 has an assembly through hole 104 on both ends of its surface, and a fastening bolt 105 is inserted into each assembly through hole 104. One end of each fastening bolt 105 is threaded into a corresponding threaded hole 106, and each threaded hole 106 is opened on the bottom inner wall of the corresponding connecting groove 102.
[0031] The engagement of the fastening bolt 105 with the threaded hole 106 ensures a stable connection between the connecting buckle 103 and the connecting groove 102, thus guaranteeing the overall stability of the sandwich panel after assembly.
[0032] Furthermore, each threaded hole 106 is a blind hole.
[0033] The blind hole design avoids direct contact between the core material 2 and the external environment, reducing the risk of corrosion and damage and extending the service life of the sandwich panel.
[0034] Working principle: A core material 2 made of a corresponding material is filled into the space formed by the two panels 1 and the reinforcing frame 3 to form a stable sandwich structure. Then, multiple sandwich panels are quickly and securely spliced together using the connecting groove 102 and connecting buckle 103 in the connecting structure. During the connection process, the fastening bolt 105 passes through the mounting through hole 104 on the connecting buckle 103 and screws into the threaded hole 106 at the bottom of the connecting groove 102, achieving a tight connection between the connecting buckle 103 and the connecting groove 102. This structural design not only improves the overall load-bearing capacity and stability of the sandwich panels, but also simplifies the installation process and improves construction efficiency.
[0035] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A graphite polyurethane sandwich panel, characterized in that, It includes two oppositely arranged panels, with a core material between the two panels. The two panels are fixedly connected by a reinforcing frame. Each panel has a connecting structure on the surface away from the core material, and a honeycomb reinforcing structure is integrally provided on the surface of each panel facing the core material. The reinforcing frame is integrally welded to the two panels.
2. The graphite polyurethane sandwich panel as described in claim 1, characterized in that: The connection structure includes four connection slots respectively opened at both ends and both sides of one side surface of the panel, and a connection buckle. The two ends of the connection buckle are respectively engaged in the corresponding connection slots opened on two adjacent panel surfaces and connected by fasteners.
3. The graphite polyurethane sandwich panel as described in claim 2, characterized in that: Each of the connecting slots has one end and both ends of the connecting buckle as a regular polygonal structure.
4. The graphite polyurethane sandwich panel as described in claim 2, characterized in that: Each of the connecting buckles has an assembly through hole on both ends, and a fastening bolt is inserted into each of the assembly through holes. One end of each fastening bolt is threaded into a corresponding threaded hole, and each threaded hole is located on the inner wall of the bottom of the corresponding connecting groove.
5. The graphite polyurethane sandwich panel as described in claim 4, characterized in that: Each of the aforementioned threaded holes is a blind hole.