Split type lug connecting node structure

Abstract

The utility model provides a split type lug connection node structure, and mainly relates to the technical field of composite material truss connection points. A split type lug connecting node structure comprises a lug body and connecting ends, the connecting ends are fixedly arranged on the two sides of the lug body, a plurality of bolt holes are formed in the connecting ends, a plurality of positioning grooves are formed in the connecting end on one side, a plurality of positioning protruding points are arranged on the connecting end on the other side, and the bolt holes are formed in the bolt holes. A plurality of through grooves are formed in the connecting positions of the connecting ends and the lug piece bodies, alloy clamps penetrate through the through grooves, and when the lug piece is used, the connecting end of one side, provided with the positioning grooves, of one lug piece body is in butt joint with the connecting end of one side, provided with the positioning protruding points, of the other lug piece body. The utility model has the beneficial effects that the bearing capacity of the connecting point of the composite material truss can be effectively improved, the service life of the composite material truss is prolonged, and the mounting efficiency is improved.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of composite material truss connection points, in particular to a split-type ear-piece connection node structure. Background Art

[0002] In recent years, composite materials, as a new structural material, have been widely used in various fields due to their unique advantages, such as high specific strength, high specific modulus, and designability. Truss structures are an effective structural form in aerostats, space stations, satellites, radomes, and antenna support systems. Due to their simple structure, reasonable load distribution, and ease of installation and disassembly, they have broad application prospects. Compared with traditional metal truss structures, composite truss structures have significantly reduced deadweight, showing clear advantages in replacing metal materials in truss structures. However, due to the short development time and immaturity of composite technology, the design and manufacture of composite trusses still require more experience.

[0003] Truss connection nodes have a wide variety of shapes, often forming multi-directional spatial components. Early truss connection nodes were mostly made of metal, with aluminum alloys and carbon steel alloys being the most common. With the advancement of composite material forming technology, composite connection nodes are gradually replacing metal materials in specialized applications.

[0004] Traditional composite trusses consist of prefabricated composite tubes bonded to metal nodes. Trusses assembled in this manner achieve minimal weight reduction, reducing them by approximately 20%-30%. Furthermore, this design is prone to failure at the connection nodes, with statistics showing that over 70% of failures occur here. In actual engineering construction, the design of composite truss structures is typically controlled by overall deformation, resulting in relatively low stress levels and a large safety reserve for member strength. If the node load-bearing capacity is insufficient, the structure's strength reserve cannot be fully utilized, making it both unsafe and uneconomical. Therefore, when designing composite truss structures, special attention must be paid to the design of the joints to avoid node failures and improve load-bearing efficiency and reliability while reducing overall weight.

[0005] The load-bearing capacity of existing composite truss joints needs to be further improved to ensure the overall structural strength of the truss and extend its service life. In split-lug joints, the gap between the bolts and the bolt holes can easily cause the two symmetrical lugs to be misaligned during installation. Any misalignment can also affect the load-bearing capacity of the split-lug joints. Utility Model Content

[0006] In order to solve the deficiencies of the existing technology, the utility model provides a split ear-piece connection node structure, which can effectively improve the bearing capacity of the composite material truss connection point, increase the service life of the composite material truss, and improve installation efficiency.

[0007] In order to achieve the above-mentioned purpose, the present invention is realized through the following technical solutions:

[0008] A split ear connection node structure includes an ear body and a connecting end, wherein the connecting end is fixedly arranged on both sides of the ear body, a plurality of bolt holes are provided on the connecting end, a plurality of positioning grooves are provided on one side of the connecting end, and a plurality of positioning protrusions are provided on the other side of the connecting end, a plurality of through slots are provided at the connection between the connecting end and the ear body, and an alloy clamp passes through the through slots. When in use, the connecting end on one side of the ear body with the positioning groove is butted against the connecting end on the other side of the ear body with the positioning protrusion.

[0009] The positions and shapes of the positioning protrusions and the positioning grooves on the connecting end correspond to each other.

[0010] The plurality of bolt holes are arranged at equal intervals on the connecting end.

[0011] At least two groups of through slots are provided.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The utility model can ensure the accurate docking of the two ear structures during installation through the positioning grooves and positioning protrusion structures provided on the connecting ends, thereby improving the installation efficiency. In addition, by cooperating with the alloy clamps, the load-bearing capacity of the connection points of the composite material truss is effectively improved on the basis of maximizing the weight reduction of the composite material truss, thereby increasing the service life of the composite material truss. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a structural diagram of the ear piece main body in the docking state of the utility model;

[0016] Figure 3 It is a schematic diagram of the inner structure of the ear piece main body of the utility model.

[0017] The numbers shown in the accompanying drawings are: 1, ear piece body; 2, connecting end; 3, bolt hole; 4, through groove; 5, alloy clamp; 20, positioning groove; 21, positioning protrusion. DETAILED DESCRIPTION

[0018] The present invention will be further described with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the contents of this invention, those skilled in the art may make various changes or modifications to the present invention, and that such equivalent forms also fall within the scope defined in this application.

[0019] Combined with attachment Figure 1-Figure 3 A split ear connection node structure includes an ear body 1 and a connecting end 2. The connecting end 2 is fixedly arranged on both sides of the ear body 1. A plurality of bolt holes 3 are provided on the connecting end 2. A plurality of positioning grooves 20 are provided on one side of the connecting end 2, and a plurality of positioning protrusions 21 are provided on the other side of the connecting end 2. A plurality of through slots 4 are provided at the connection between the connecting end 2 and the ear body 1, and an alloy clamp 5 passes through the through slot 4. When in use, the connecting end 2 on one side of the ear body 1 with the positioning groove 20 is docked with the connecting end 2 on the other side of the ear body 1 with the positioning protrusion 21.

[0020] The positions and shapes of the positioning protrusions 21 and the positioning grooves 20 on the connecting end 2 correspond to each other.

[0021] The plurality of bolt holes 3 are arranged at equal intervals on the connecting end 2 .

[0022] At least two groups of through slots 4 are provided.

[0023] When the device is in use, the two side connection ends 2 of the two ear plate main bodies 1 are respectively docked with the two side connection ends 2 of the other ear plate main body 1 at the installation position, and the installation positions of the two ear plate main bodies 1 are accurately positioned through the positioning grooves 20 and the positioning protrusions 21 to prevent installation deviation. The fixing bolts are respectively installed in the bolt holes 3, the alloy clamp 5 is passed through the through slot 4, and the alloy clamp 5 is locked to complete the installation.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A split-type ear piece connection node structure, comprising an ear piece body (1) and a connection end (2), characterized in that: The connecting end (2) is fixedly arranged on both sides of the ear piece main body (1), and a plurality of bolt holes (3) are provided on the connecting end (2). A plurality of positioning grooves (20) are provided on one side of the connecting end (2), and a plurality of positioning protrusions (21) are provided on the other side of the connecting end (2). A plurality of through grooves (4) are provided at the connection between the connecting end (2) and the ear piece main body (1), and an alloy clamp (5) passes through the through groove (4). When in use, the connecting end (2) on one side of the ear piece main body (1) with the positioning groove (20) is docked with the connecting end (2) on the other side of the ear piece main body (1) with the positioning protrusion (21).

2. The split-type lug connection node structure according to claim 1, characterized in that: The positions and shapes of the positioning protrusions (21) and the positioning grooves (20) on the connecting end (2) correspond to each other.

3. The split-type lug connection node structure according to claim 1, characterized in that: The plurality of bolt holes (3) are arranged at equal intervals on the connection end (2).

4. The split-type lug connection node structure according to claim 1, characterized in that: At least two groups of through slots (4) are provided.

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