Rigid structural member

Abstract

The utility model discloses a rigid structural member which comprises a first continuous fiber reinforced resin plate, a second continuous fiber reinforced resin plate and a third continuous fiber reinforced resin plate, and the first continuous fiber reinforced resin plate, the second continuous fiber reinforced resin plate and the third continuous fiber reinforced resin plate define a triangular prism. A plurality of positioning parts are arranged in an inner cavity of the triangular prism and distributed at intervals in the axis direction of the triangular prism, each positioning part comprises a first mounting surface, a second mounting surface and a third mounting surface, the first continuous fiber reinforced resin plate is fixedly connected with the first mounting surface, and the second continuous fiber reinforced resin plate is fixedly connected with the second mounting surface. And the third continuous fiber reinforced resin plate is fixedly connected with the third mounting surface. Thus, the triangular prism shape is defined by the three continuous fiber reinforced resin plates, the interior of the triangular prism shape is fixed through the positioning pieces, the structural piece can better disperse and transmit loads when subjected to external force, and external pressure and deformation are effectively resisted.

Description

TECHNICAL FIELD

[0001] The utility model relates to composite material technical field, concretely is a rigid structural member. BACKGROUND

[0002] At present, the cross section design of pultrusion pipe generally tends to adopt the polygonal structure with parallel upper and lower panels, which meets certain application requirements to some extent. However, in actual use, the pultrusion pipe often needs to bear bending stress from all directions. Under this stress state, the cross section shape is often difficult to maintain effectively, which affects the overall stability of the structure. More seriously, with the continuous increase of bending stress, the bending stiffness of the pultrusion pipe will rapidly decrease, which greatly limits its application range and performance in complex stress environment. SUMMARY

[0003] In order to solve the technical problem that the cross section shape of the pultrusion pipe under external stress state is difficult to maintain effectively, which affects the overall stability of the structure, and the bending stiffness decreases rapidly, limiting its application range and performance in complex stress environment, the utility model provides a rigid structural member.

[0004] The rigid structural member provided by the utility model comprises a first continuous fiber reinforced resin plate, a second continuous fiber reinforced resin plate and a third continuous fiber reinforced resin plate, the first continuous fiber reinforced resin plate, the second continuous fiber reinforced resin plate and the third continuous fiber reinforced resin plate form a triangular prism by enclosing;

[0005] A plurality of positioning pieces are arranged in the inner cavity of the triangular prism, the plurality of positioning pieces are arranged at intervals along the axis direction of the triangular prism, each positioning piece comprises a first mounting surface, a second mounting surface and a third mounting surface, the first continuous fiber reinforced resin plate is fixedly connected with the first mounting surface, the second continuous fiber reinforced resin plate is fixedly connected with the second mounting surface, and the third continuous fiber reinforced resin plate is fixedly connected with the third mounting surface.

[0006] In some embodiments of the utility model, the first end of the first continuous fiber reinforced resin plate abuts against the inner side surface of the second end of the second continuous fiber reinforced resin plate, the first end of the second continuous fiber reinforced resin plate abuts against the inner side surface of the second end of the third continuous fiber reinforced resin plate, and the first end of the third continuous fiber reinforced resin plate abuts against the inner side surface of the second end of the first continuous fiber reinforced resin plate.

[0007] In some embodiments of the utility model, the positioning member includes three fixed plates which are sequentially connected in head-tail mode, and an arc chamfer is arranged between two adjacent fixed plates, and the outer surfaces of the three fixed plates form the first mounting surface, the second mounting surface and the third mounting surface respectively.

[0008] In some embodiments of the utility model, a plurality of first fixing holes are arranged on each fixed plate, the first continuous fiber reinforced resin plate, the second continuous fiber reinforced resin plate and the third continuous fiber reinforced resin plate are respectively provided with second fixing holes which are matched with the first fixing holes, and the first fixing holes and the second fixing holes are connected through a fixing member.

[0009] In some embodiments of the utility model, the plurality of first fixing holes include first fixing sub-holes and second fixing sub-holes which are arranged along the first direction of the fixed plate, and the distance between the first fixing sub-holes and the first end of the fixed plate is less than the distance between the second fixing sub-holes and the second end of the fixed plate.

[0010] The first fixing sub-holes connected with the first continuous fiber reinforced resin plate are arranged close to the first end of the first continuous fiber reinforced resin plate, the first fixing sub-holes connected with the second continuous fiber reinforced resin plate are arranged close to the first end of the second continuous fiber reinforced resin plate, and the first fixing sub-holes connected with the third continuous fiber reinforced resin plate are arranged close to the first end of the third continuous fiber reinforced resin plate.

[0011] In some embodiments of the utility model, the height of the longitudinal section of the positioning member is 45mm-150mm, and the thickness of one fixed plate is 1mm-6mm.

[0012] In some embodiments of the utility model, the first continuous fiber reinforced resin plate, the second continuous fiber reinforced resin plate and the third continuous fiber reinforced resin plate all include a fabric layer and a bonding layer, and the bonding layer is used for filling the gap inside the fabric layer.

[0013] The fabric layer and the bonding layer are made through a pultrusion-weaving process.

[0014] In some embodiments of the utility model, the fabric layer includes one of glass fiber, basalt fiber, carbon fiber and aramid fiber.

[0015] In some embodiments of the utility model, the bonding layer includes one of epoxy resin, vinyl resin, polyurethane resin and phenolic resin.

[0016] The width of the first continuous fiber reinforced resin plate, the second continuous fiber reinforced resin plate and the third continuous fiber reinforced resin plate is 60mm-200mm, and the thickness is 2mm-10mm in some embodiments of the utility model.

[0017] The rigid structural member provided by the utility model has at least the following advantages:

[0018] The rigid structural member provided by the utility model has at least the following advantages: The rigid structural member provided by the utility model has at least the following advantages: The rigid structural member provided by the utility model has at least the following advantages:

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the drawings needed to be used in the embodiment description will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creative labor.

[0020] Figure 1 The structural schematic diagram of the rigid structural member provided by an exemplary embodiment of the utility model is shown in the figure.

[0021] Figure 2 The structural schematic diagram of the positioning member provided by an exemplary embodiment of the utility model is shown in the figure.

[0022] Figure 3 The structural schematic diagram of the positioning member provided by an exemplary embodiment of the utility model is shown in the figure. Figure 1 The enlarged structural schematic diagram of A in the figure.

[0023] Figure 4 The displacement curve diagram of the structural member and the square structural member in the prior art when being stressed is shown in the figure.

[0024] The marks in the drawings are as follows:

[0025] 1, the first continuous fiber reinforced resin plate;2, the second continuous fiber reinforced resin plate;3, the third continuous fiber reinforced resin plate;

[0026] 4. Positioning component; 410. Fixing plate; 411. First mounting surface; 412. Second mounting surface; 413. Third mounting surface; 414. First fixing sub-hole; 415. Second fixing sub-hole;

[0027] 5. Second fixing hole. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0029] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0030] With continuous technological advancements and market development, pultruded tubes will play a unique role in more fields. Especially in new energy and environmental protection, the application prospects of pultruded tubes will be even broader.

[0031] Currently, the cross-sectional design of pultruded tubes in existing technologies generally tends to adopt a polygonal structure with parallel upper and lower panels, which meets certain application requirements to a certain extent. However, in actual use, pultruded tubes often need to withstand bending stresses from various directions. Under this stress state, its cross-sectional shape is often difficult to maintain effectively, affecting the overall stability of the structure. More seriously, as the bending stress increases, the bending stiffness of the pultruded tube decreases rapidly, which greatly limits its application range and performance under complex stress environments.

[0032] The following is combined Figures 1-4 The embodiments of this utility model are further described below.

[0033] To solve the above technical problems, the utility model provides a kind of rigid structural member, by the first continuous fiber reinforced resin plate, second continuous fiber reinforced resin plate and third continuous fiber reinforced resin plate are enclosed into the shape of three prism, compared to integrally formed, material can be more effectively utilized, prevent material waste in manufacturing process, and enclosed into shape allows greater design flexibility, reduce the complexity of manufacturing process and production cycle, while, if single continuous fiber reinforced resin plate is damaged, damaged plate can be individually replaced, without replacing the entire structure, fixed connection is carried out inside by positioning member, structural member can better disperse and transfer load when subjected to external force, improve the overall mechanical properties and durability, can effectively resist external pressure and deformation, in addition, using continuous fiber reinforced resin plate has lighter mass, so that the entire structural member can maintain relatively light weight while achieving high strength and rigidity.

[0034] An exemplary embodiment of the utility model provides a kind of rigid structural member, as Figure 1 And Figure 3 As shown in the drawing, it includes first continuous fiber reinforced resin plate 1, second continuous fiber reinforced resin plate 2 and third continuous fiber reinforced resin plate 3, first continuous fiber reinforced resin plate 1, second continuous fiber reinforced resin plate 2 and third continuous fiber reinforced resin plate 3 are enclosed into three prism;Wherein, compared to traditional metal material, continuous fiber reinforced resin plate has lighter mass, so that the entire structural member can maintain relatively light weight while achieving high strength and rigidity, which helps to reduce transportation and installation cost. Continuous fiber reinforced resin plate usually has good corrosion resistance and wear resistance, which makes three prism structural member can maintain longer service life in various harsh environments, thereby reducing the maintenance cost of structural member, improve its economy and practicality. In addition, compared to integrally formed, material can be more effectively utilized, prevent material waste in manufacturing process, and enclosed into shape allows greater design flexibility, reduce the complexity of manufacturing process and production cycle, while, if single continuous fiber reinforced resin plate is damaged, damaged plate can be individually replaced, without replacing the entire structure. Three prism cavities are provided with a plurality of positioning members 4, and the plurality of positioning members 4 are arranged along the axial direction of the three prism, each positioning member 4 includes first mounting surface 411, second mounting surface 412 and third mounting surface 413, first continuous fiber reinforced resin plate 1 is fixedly connected with first mounting surface 411, second continuous fiber reinforced resin plate 2 is fixedly connected with second mounting surface 412, and third continuous fiber reinforced resin plate 3 is fixedly connected with third mounting surface 413. By enclosing first continuous fiber reinforced resin plate 1, second continuous fiber reinforced resin plate 2 and third continuous fiber reinforced resin plate 3 into the shape of three prism, fixed connection is carried out inside by positioning member 4, structural member can better disperse and transfer load when subjected to external force, improve the overall mechanical properties and durability, can effectively resist external pressure and deformation.

[0035] Exemplarily, with reference to Figure 4 and Table 1, compared with the square structure in the prior art, the structure in the utility model can better disperse and transfer load when subjected to external force.

[0036] Table 1

[0037] Item Maximum load (kN) Bending stiffness Square structural member 20.6 7486 Rigid structural member 53.5 5971

[0038] In some embodiments of the utility model, with reference to Figure 1 and Figure 3 , the inner side surface of the first end of the first continuous fiber reinforced resin plate 1 and the second end of the second continuous fiber reinforced resin plate 2 abut, the inner side surface of the first end of the second continuous fiber reinforced resin plate 2 and the second end of the third continuous fiber reinforced resin plate 3 abut, and the inner side surface of the first end of the third continuous fiber reinforced resin plate 3 and the second end of the first continuous fiber reinforced resin plate 1 abut. The end surfaces of the two adjacent continuous fiber reinforced resin plates are connected by abutting, which can form a mutual supporting structure, thereby improving the overall bending strength and being less likely to deform or damage when bearing bending load.

[0039] In some embodiments of the utility model, with reference to Figure 2 and Figure 3 , the positioning member 4 comprises three fixed plates 410 connected in sequence, and an arc chamfer is arranged between the two adjacent fixed plates 410, and the outer surfaces of the three fixed plates 410 respectively constitute a first mounting surface 411, a second mounting surface 412 and a third mounting surface 413. The three fixed plates 410 respectively constitute different mounting surfaces, which can be connected according to actual needs. The arc chamfer can make the connection between the two adjacent fixed plates 410 more smooth and smooth, and facilitate positioning and alignment during installation.

[0040] In some embodiments of the utility model, with reference to Figure 2 and Figure 3A plurality of first fixing holes are arranged on each fixing plate 410, the first continuous fiber reinforced resin plate 1, the second continuous fiber reinforced resin plate 2 and the third continuous fiber reinforced resin plate 3 are respectively provided with second fixing holes 5 matched with the first fixing holes, and the first fixing holes and the second fixing holes 5 are connected through fixing members. Exemplarily, three positioning members 4 are arranged in the rigid structure member, and the distance between two adjacent positioning members 4 is equal. A first positioning hole is arranged on each mounting surface of the positioning member 4, the first continuous fiber reinforced resin plate 1, the second continuous fiber reinforced resin plate 2 and the third continuous fiber reinforced resin plate 3 are respectively provided with second fixing holes 5 matched with the first fixing holes, then the first positioning hole and the second positioning hole can be connected and fixed through rivets or screws and other parts capable of being connected, and the connection and reinforcement can also be carried out on the basis or in cooperation with structural glue, wherein the structural glue includes epoxy structural glue, acrylate structural glue and polyurethane structural glue. The matching design of the first fixing hole and the second fixing hole 5 ensures the accurate alignment between the continuous fiber reinforced resin plate and the fixing plate 410, and the connection is carried out through the fixing member (such as a bolt, a nut and the like), and the disassembly is relatively simple, and the subsequent maintenance and replacement are facilitated.

[0041] In some embodiments of the present application, referring to Figure 2 and Figure 3 , the plurality of first fixing holes include first fixing sub-holes 414 and second fixing sub-holes 415 arranged along the first direction of the fixing plate 410, and the positions and quantities of the first fixing sub-holes 414 and the second fixing sub-holes 415 can be adjusted to adapt to different installation requirements. And the distance between the first fixing sub-hole 414 and the first end of the fixing plate 410 is less than the distance between the second fixing sub-hole 415 and the second end of the fixing plate 410; the first fixing sub-hole 414 connected with the first continuous fiber reinforced resin plate 1 is arranged close to the first end of the first continuous fiber reinforced resin plate 1, the first fixing sub-hole 414 connected with the second continuous fiber reinforced resin plate 2 is arranged close to the first end of the second continuous fiber reinforced resin plate 2, and the first fixing sub-hole 414 connected with the third continuous fiber reinforced resin plate 3 is arranged close to the first end of the third continuous fiber reinforced resin plate 3. Exemplarily, referring to Figure 2The distance between the first fixed sub-hole 414 and the first end of the fixed plate 410 is 14.95mm, and the distance between the second fixed sub-hole 415 and the second end of the fixed plate 410 is 19.3mm, so that the inner side surface of the first end of the first continuous fiber reinforced resin plate 1 and the second end of the second continuous fiber reinforced resin plate 2 abuts, the inner side surface of the first end of the second continuous fiber reinforced resin plate 2 and the second end of the third continuous fiber reinforced resin plate 3 abuts, and the inner side surface of the first end of the third continuous fiber reinforced resin plate 3 and the second end of the first continuous fiber reinforced resin plate 1 abuts, thereby forming a mutual supporting structure, so that the bending strength of the whole is improved, and the whole is less likely to deform or be damaged when bearing a bending load.

[0042] In some embodiments of the present application, referring to Figure 2 and Figure 3 , the height of the longitudinal section of the positioning member 4 is 45mm-150mm, and the thickness of one fixed plate 410 is 1mm-6mm. For example, the longitudinal section of the positioning member 4 is an equilateral triangle, wherein the length of the height of the longitudinal section of the positioning member 4 is 88.87mm, and the thickness of the fixed plate 410 is 2mm.

[0043] In some embodiments of the present application, referring to Figure 1 , the first continuous fiber reinforced resin plate 1, the second continuous fiber reinforced resin plate 2 and the third continuous fiber reinforced resin plate 3 all include a fabric layer and an adhesive layer, and the adhesive layer is used to fill the gap inside the fabric layer, and the fabric layer and the adhesive layer are made by a pultrusion-weaving process. The adhesive layer can effectively fill the gap between the fabric layers, forming a more compact and continuous overall structure, which helps to enhance the strength and toughness of the whole continuous fiber reinforced resin plate, especially when subjected to external force, it can reduce the stress concentration and delamination risk caused by the gap, at the same time, the pultrusion-weaving process can ensure that the continuous fiber reinforced resin plate has excellent mechanical properties, especially longitudinal strength, and improve the ability of the continuous fiber reinforced resin plate to withstand high load or high stress.

[0044] In some embodiments of the present application, referring to Figure 1 , the fabric layer includes one of glass fiber, basalt fiber, carbon fiber or aramid fiber. For example, the fabric layer is formed by weaving a plurality of yarns, wherein the material of the plurality of yarns includes glass fiber, basalt fiber, carbon fiber or aramid fiber. For the yarn, a single yarn can be selected, or yarns of multiple materials can be mixed, which is not limited here. The continuous fiber reinforced resin plate made of fiber has lighter weight compared with traditional metal materials, so that the whole structure can achieve high strength and rigidity while maintaining relatively light weight, which helps to reduce transportation and installation costs. The continuous fiber reinforced resin plate usually has good corrosion resistance and wear resistance.

[0045] In some embodiments of the present application, referring to Figure 1 The adhesive layer comprises one of epoxy resin, vinyl resin, polyurethane resin or phenolic resin. The epoxy resin, vinyl resin, polyurethane resin or phenolic resin all have high strength and rigidity, can bear certain mechanical load, and can maintain a long service life in harsh use environment.

[0046] In some embodiments of the present application, referring to Figure 1 The width of the first continuous fiber reinforced resin plate 1, the second continuous fiber reinforced resin plate 2 and the third continuous fiber reinforced resin plate 3 is 60mm-200mm, and the thickness is 2mm-10mm. Exemplarily, referring to Figure 1 The length of the first continuous fiber reinforced resin plate 1, the second continuous fiber reinforced resin plate 2 and the third continuous fiber reinforced resin plate 3 is 1500mm, the width is 120mm, and the thickness is 5mm. The first continuous fiber reinforced resin plate 1, the second continuous fiber reinforced resin plate 2 and the third continuous fiber reinforced resin plate 3 adopt the same size, greatly simplifying the design process. In the production process, the standardized size can reduce the number of mold replacement and debugging, and improve the production efficiency.

[0047] The above description can be implemented alone or in various combinations, and these variants are within the protection scope of the present application.

[0048] It should be noted that in this paper, relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the term "include", "contain" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment containing a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitations, the element defined by the statement "including one" does not exclude the presence of other identical elements in the process, method, article or equipment including the element.

[0049] It should be finally pointed out that: the above examples are only used to illustrate the technical solutions of the utility model, and not limit it. Although the utility model has been explained in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A rigid structural member, characterized by, The application relates to a continuous fiber reinforced resin plate, which comprises a first continuous fiber reinforced resin plate, a second continuous fiber reinforced resin plate and a third continuous fiber reinforced resin plate, wherein the first continuous fiber reinforced resin plate, the second continuous fiber reinforced resin plate and the third continuous fiber reinforced resin plate are arranged to form a triangular prism. A plurality of positioning members are arranged in the inner cavity of the triangular prism, and the positioning members are arranged at intervals along the axial direction of the triangular prism; each positioning member comprises a first mounting surface, a second mounting surface and a third mounting surface; the first continuous fiber reinforced resin plate is fixedly connected with the first mounting surface; the second continuous fiber reinforced resin plate is fixedly connected with the second mounting surface; and the third continuous fiber reinforced resin plate is fixedly connected with the third mounting surface.

2. The rigid structural member of claim 1, wherein The first end of the first continuous fiber reinforced resin plate abuts against the inner side surface of the second end of the second continuous fiber reinforced resin plate; the first end of the second continuous fiber reinforced resin plate abuts against the inner side surface of the second end of the third continuous fiber reinforced resin plate; and the first end of the third continuous fiber reinforced resin plate abuts against the inner side surface of the second end of the first continuous fiber reinforced resin plate.

3. The rigid structural member of claim 1, wherein, The positioning member comprises three fixed plates which are sequentially connected in a head-to-tail mode, and an arc chamfer is arranged between two adjacent fixed plates; and the outer surfaces of the three fixed plates form the first mounting surface, the second mounting surface and the third mounting surface respectively.

4. The rigid structural member of claim 3, wherein, A plurality of first fixing holes are arranged on each fixed plate; the first continuous fiber reinforced resin plate, the second continuous fiber reinforced resin plate and the third continuous fiber reinforced resin plate are respectively provided with second fixing holes which are matched with the first fixing holes; and the first fixing holes and the second fixing holes are connected through a fixing member.

5. The rigid structural member of claim 4, wherein, The plurality of first fixing holes comprise first fixing sub-holes and second fixing sub-holes which are arranged along the first direction of the fixed plate; and the distance between the first fixing sub-holes and the first end of the fixed plate is smaller than the distance between the second fixing sub-holes and the second end of the fixed plate. The first fixing sub-holes connected with the first continuous fiber reinforced resin plate are arranged close to the first end of the first continuous fiber reinforced resin plate; the first fixing sub-holes connected with the second continuous fiber reinforced resin plate are arranged close to the first end of the second continuous fiber reinforced resin plate; and the first fixing sub-holes connected with the third continuous fiber reinforced resin plate are arranged close to the first end of the third continuous fiber reinforced resin plate.

6. The rigid structural member of claim 3, wherein, The height of the longitudinal section of the positioning member is 45mm-150mm; and the thickness of one fixed plate is 1mm-6mm.

7. The rigid structural member of claim 1, wherein The first continuous fiber reinforced resin plate, the second continuous fiber reinforced resin plate and the third continuous fiber reinforced resin plate all comprise a fabric layer and a bonding layer; and the bonding layer is used for filling the gap inside the fabric layer. The fabric layer and the bonding layer are made through a pultrusion-weaving process.

8. The rigid structural member of claim 7, wherein, The fabric layer comprises one of glass fiber, basalt fiber, carbon fiber and aramid fiber.

9. The rigid structural member of claim 7, wherein, The bonding layer comprises one of epoxy resin, vinyl resin, polyurethane resin and phenolic resin.

10. The rigid structural member of claim 1, wherein, The first continuous fiber reinforced resin plate, the second continuous fiber reinforced resin plate and the third continuous fiber reinforced resin plate each have a width of 60mm-200mm and a thickness of 2mm-10mm.

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