Uniform-section cap-shaped hyperbolic stringer

Abstract

The utility model belongs to the technical field of aircraft panel structural design, and discloses a uniform-section cap-shaped hyperbolic stringer which comprises bottom plates, side plates and a top plate, the side plates are arranged on the two sides of the top plate, the other sides of the side plates are connected with the bottom plates, the connecting line between the inner sides of the two bottom plates can be a bottom line, and the bottom line and the top plate are arranged in parallel. And in any section perpendicular to the top plate in the length direction of the top plate, the relative distance between the top plate and the bottom line, the relative distance between the two bottom plates, the width of the top plate, the included angle between the bottom line and the side plate and the included angle between the top plate and the side plate are all constant. According to the utility model, the inconsistent sizes of cap cavities of all sections of the stringer can be avoided, the core mold is prevented from being customized, the positioning efficiency of the core mold and the cap cavities is improved, and the manufacturing quality of a wallboard is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of aircraft wall plate structure design, in particular to a hat-shaped hyperbolic long truss with equal cross-section. Background Art

[0002] At present, composite materials are increasingly widely used in aircraft due to their high specific strength and specific stiffness, excellent fatigue resistance and corrosion resistance, and designability. The proportion of composite materials in the structural weight has become one of the important indicators for measuring the advancement of aircraft. At present, composite reinforced wall panels are a typical structural form commonly used in aircraft structures, and the hat-shaped long stringer and the skin can form a closed section, so that the stability of the hat-shaped reinforced wall panels is improved, and thus become a more efficient reinforcement method in the load-bearing structural parts of aircraft. However, due to the hyperbolic shape of the hat-shaped long stringer and the non-uniform thickness of the inner surface of the skin, the hat cavity size of each section of the long stringer is inconsistent, which leads to the continuous change of the shape of the core mold, and then the core mold needs to be customized one by one, which is not only costly, but also difficult to demould. The positioning process of the core mold and the hat cavity is also difficult, which not only affects the pressure on the skin at the bottom of the hat, but also affects the manufacturing quality of the wall panel. Therefore, how to avoid inconsistent cap cavity sizes of various cross sections of the long stringer, avoid customization of the core mold, improve the positioning efficiency of the core mold and the cap cavity, and ensure the manufacturing quality of the wall panel is a problem that people in this field need to solve. Utility Model Content

[0003] The utility model aims to provide a hat-shaped hyperbolic long girder with equal cross-section, so as to avoid inconsistent sizes of hat cavities of various cross-sections of the long girder and to avoid customization of the core mold, thereby improving the positioning efficiency of the core mold and the hat cavity and ensuring the manufacturing quality of the wall panel.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] A uniform cross-section hat-shaped hyperbolic long girder, comprising:

[0006] A bottom plate, a side plate and a top plate, the side plates are arranged on both sides of the top plate, and the other side of the side plate is connected to the bottom plate, a bottom line can be obtained by connecting the inner sides of the two bottom plates, the bottom line is arranged parallel to the top plate, and along the length direction of the top plate, perpendicular to any cross section of the top plate, the relative distance between the top plate and the bottom line, the relative distance between the two bottom plates, the width of the top plate, the angle between the bottom line and the side plate, and the angle between the top plate and the side plate are all constant.

[0007] As an option, the bottom plate, the side plate and the top plate are an integrated structure and are manufactured by a mold.

[0008] Optionally, the mold includes a first mold and a second mold, the first mold is provided with a cap cavity portion and an extension portion, the laminate is mounted on the extension portion, and the second mold presses the laminate into the cap cavity portion from top to bottom until the target surface is reached so that the top plate and the side plate can be formed.

[0009] Optionally, the mold is further provided with a first clamping plate and a second clamping plate, and the first clamping plate and the second clamping plate can be pressed against two sides of the laminate on the extension portion respectively to form the bottom plate.

[0010] Optionally, the bottom plate is fitted to the skin, and the skin is arranged according to a skin shape distribution, a reference plane is arranged at an angle on the skin shape distribution, and a trajectory line is arranged, the reference plane is located between the two bottom plates, and the reference plane and the trajectory line are both arranged along the length direction of the top plate.

[0011] As an option, in any cross-section perpendicular to the top plate along the length direction of the top plate, a first endpoint and a second endpoint are respectively arranged on the inner sides of the two bottom plates, the line connecting the first endpoint and the second endpoint can obtain the bottom line, the center of the bottom line is set as the midpoint, and the axis of the hat cavity can be obtained by taking the midpoint as a perpendicular line to the bottom line, the axis of the hat cavity is perpendicular to the top plate and passes through the midpoint of the top plate, and the reference plane and the trajectory line both intersect the axis of the hat cavity at the midpoint.

[0012] As an option, the angle between the bottom plate and the side plate is set to α, the angle between the top plate and the side plate is set to β, and α+β=180°, and the range of α is set to (0°, 90°].

[0013] Optionally, when the hat-shaped hyperbolic long truss of equal cross-section is manufactured by hot molding, the angle between the reference plane and the axis of the hat cavity is set to γ, and the range of γ is set to [α-90°, 90°-α].

[0014] Optionally, the hat-shaped hyperbolic long girder with equal cross-section is provided with a right torsion section, a non-twist section and a left torsion section, and the trajectory line is located at the center of the three.

[0015] Optionally, the second mold can be located above the cap cavity portion, at the midpoint of the laminate, and extruded from top to bottom at an angle of γ to the target surface to form the top plate and the side plate.

[0016] Beneficial effects of the utility model:

[0017] In the utility model, the bottom line and the top plate obtained by connecting the inner sides of two bottom plates in the equal-section hat-shaped hyperbolic long girder are arranged in parallel, and in any cross section along the length direction of the top plate and perpendicular to the top plate, the relative distance between the top plate and the bottom line, the relative distance between the two bottom plates, the width of the top plate, the angle between the bottom line and the side plate, and the angle between the top plate and the side plate are set to be constant, so as to achieve the consistency of the hat cavity cross section and ensure that the dimensions of each cross section are the same, so as to avoid customization of the core mold, thereby reducing the operating cost, and at the same time, the molding quality can be guaranteed through this setting, the manufacturing efficiency can be improved, and the manufacturing quality of the subsequent wall panels can be guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a hat-shaped hyperbolic long truss of equal cross-section described in an embodiment of the utility model;

[0019] Figure 2 It is a bottom view schematic diagram of a hat-shaped hyperbolic long girder of uniform cross-section according to an embodiment of the utility model;

[0020] Figure 3 It is a schematic diagram of a hat-shaped hyperbolic long girder of uniform cross-section placed on a skin according to an embodiment of the utility model;

[0021] Figure 4 yes Figure 3 A local enlarged schematic diagram of the middle A;

[0022] Figure 5 It is a schematic diagram of the distribution of the uniform cross-section hat-shaped hyperbolic long stringer described in the embodiment of the utility model on the outer shape distribution of the skin;

[0023] Figure 6 It is a partially enlarged schematic diagram of a hat-shaped hyperbolic long truss of uniform cross-section described in an embodiment of the utility model;

[0024] Figure 7 It is a schematic diagram of manufacturing a hat-shaped hyperbolic long girder of uniform cross-section described in an embodiment of the utility model through laminated plates and a mold.

[0025] In the figure:

[0026] 10-equal cross-section hat-shaped hyperbolic long stringer; 20-skin; 30-skin shape distribution; 500-laminated plate;

[0027] 11-bottom plate; 111-first end point; 112-second end point; 113-bottom line; 12-side plate; 121-inner side surface; 122-outer side surface; 13-top plate; 131-inner top surface;

[0028] 101-midpoint; 102-hat cavity axis; 103-right torsion section; 104-no torsion section; 105-left torsion section; 106-first chamfer; 107-second chamfer; 201-skin top surface; 301-reference plane; 302-trajectory line;

[0029] 411 -cap cavity portion; 412 -extension portion; 42 -first clamping plate; 43 -second clamping plate; 44 -second mold; 501 -target surface. DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar components or components having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0031] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, it can be a mechanical connection or an electrical connection, it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In the description of the present utility model, unless otherwise clearly stipulated and limited, a first feature being "above" or "below" a second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature being in contact not directly but through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0033] At present, composite materials are increasingly widely used in aircraft due to their high specific strength and specific stiffness, excellent fatigue resistance and corrosion resistance, and designability. The proportion of composite materials in the structural weight has become one of the important indicators for measuring the advancement of aircraft. At present, composite reinforced wall panels are a typical structural form commonly used in flying chess structures, and the hat-shaped long stringer and the skin can form a closed section, so that the stability of the hat-shaped reinforced wall panels is improved, and thus become a more efficient reinforcement method in the load-bearing structural parts of aircraft. However, due to the hyperbolic shape of the hat-shaped long stringer and the non-uniform thickness of the inner surface of the skin, the hat cavity size of each section of the long stringer is inconsistent, which leads to the continuous change of the shape of the core mold, and then the core mold needs to be customized one by one, which is not only costly, but also difficult to demould. The positioning process of the core mold and the hat cavity is also difficult, which not only affects the pressure on the skin at the bottom of the hat, but also affects the manufacturing quality of the wall panel. Therefore, how to avoid inconsistent cap cavity sizes of various cross sections of the long stringer, avoid customization of the core mold, improve the positioning efficiency of the core mold and the cap cavity, and ensure the manufacturing quality of the wall panel is a problem that people in this field need to solve.

[0034] The technical solution of this embodiment is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0035] like Figure 1-Figure 7 As shown, the present embodiment provides a uniform cross-section hat-shaped hyperbolic long girder 10 including a bottom plate 11, a side plate 12 and a top plate 13, side plates 12 are arranged on both sides of the top plate 13, and the other side of the side plate 12 is connected to the bottom plate 11, a bottom line 113 can be obtained by connecting the inner sides of the two bottom plates 11, the bottom line 113 is arranged parallel to the top plate 13, and along the length direction of the top plate 13, perpendicular to any cross section of the top plate 13, the relative distance between the top plate 13 and the bottom line 113, the relative distance between the two bottom plates 11, the width of the top plate 13, the angle between the bottom line 113 and the side plate 12, and the angle between the top plate 13 and the side plate 12 are all constant.

[0036] Specifically, in this embodiment, the bottom line 113 and the top plate 13 obtained by connecting the inner sides of the two bottom plates 11 in the uniform cross-section hat-shaped hyperbolic girder 10 are arranged in parallel, and in any cross-section along the length direction of the top plate 13 and perpendicular to the top plate 13, the relative distance between the top plate 13 and the bottom line 113, the relative distance between the two bottom plates 11, the width of the top plate 13, the angle between the bottom line 113 and the side plate 12 connected thereto, and the angle between the top plate 13 and the side plate 12 are set to be constant to achieve consistency in the cross-section of the hat cavity and ensure that the dimensions of each cross-section are the same, so as to avoid customization of the core mold, thereby reducing the operating cost, and at the same time, the molding quality can be guaranteed through this setting, the manufacturing efficiency can be improved, and the manufacturing quality of subsequent wall panels can be guaranteed.

[0037] The specific structure of the hat-shaped hyperbolic long girder with equal cross-section in this embodiment is described below.

[0038] like Figure 1 and Figure 2 As shown, in this embodiment, the equal-section hat-shaped hyperbolic long girder 10 includes a bottom plate 11, a side plate 12 and a top plate 13, and the equal-section hat-shaped hyperbolic long girder is set as a hat-shaped structure, that is, a side plate 12 is set on both sides of the top plate 13, and the other side of each side plate 12 is connected to the bottom plate 11, so that the bottom plate 11, the side plate 12 and the top plate 13 can be surrounded to form a hat-shaped structure. Specifically, the bottom plate 11, the side plate 12 and the top plate 13 have the same length, and in this embodiment, the three are integrated and can be made by a mold, so as to ensure the mechanical properties of the entire structure and improve its stability. Furthermore, in this embodiment, a line connecting the inner sides of the two bottom plates 11 can obtain a bottom line 113, and the bottom line 113 is arranged in parallel with the top plate 13, and in any cross section of the top plate 13 perpendicular to the length direction of the top plate 13, the relative distance between the top plate 13 and the bottom line 113, the relative distance between the two bottom plates 11, the width of the top plate 13, the angle between the bottom line 113 and the side plate 12, and the angle between the top plate 13 and the side plate 12 are all constant, thereby ensuring that the shape of the hat cavity of the uniform-section hat-shaped hyperbolic long girder 10 in any cross section in its length direction is consistent, avoiding the need for subsequent separate customization of the core mold, and better ensuring the molding quality of the long girder. At the same time, due to its consistent shape, it can also be correspondingly suitable for the manufacture of templates for automated hot molding, thereby improving processing efficiency.

[0039] Combination Figure 3 and Figure 4As shown, in this embodiment, the middle cross-section hat-shaped hyperbolic long girder 10 is arranged in affixed to the skin 20. Specifically, the bottom surface of the bottom plate 11 is arranged in affixed to the skin top surface 201 of the skin 20, thereby the skin top surface 201, the inner side surface 121 of the side plate 12 and the inner top surface 131 of the top plate 13 are surrounded to form a hat cavity, and in this embodiment, the hat cavity has the same shape and size in any cross section perpendicular to the top plate 13 in the length direction of the top plate 13. Exemplarily, in any cross section perpendicular to the top plate 13 along the length direction of the top plate 13, the first endpoint 111 and the second endpoint 112 are respectively provided on the inner side of the two bottom plates 11, and the line connecting the first endpoint 111 and the second endpoint 112 can obtain the above-mentioned bottom line 113. At this time, the distance between the inner top surface 131 of the top plate 13 and the bottom line 113 is set to H, and the length of the bottom line 113 is set to Lb, the length of the top plate 13 is set to Lt, and the angle between the bottom line 113 and the inner side surface 121 is set to α. Therefore, in any cross section, the values ​​of H, Lb, Lt and α will not change, thereby ensuring that the cross section of the uniform cross-section hat-shaped hyperbolic long girder 10 will not change after the overall structure is bent and deformed, which is convenient for the subsequent production and use of the core mold. Further, the angle between the inner top surface 131 and the inner side surface 121 is set to β, that is, β is the angle between the top plate 13 and the side plate 12. Specifically, due to the parallel arrangement of the bottom plate 11 and the top plate 13, α+β=180°, and in this embodiment, the range of α is set to (0°, 90°]. Specifically, the range of α set to (0°, 90°] is a theoretical range. Since the height of the corresponding top plate 13 and the hat shape is smaller when α is smaller, its actual use value is also smaller. Therefore, in this embodiment, the range of α is set to [20°, 90°]. Exemplarily, the distance between the inner side surface 121 and the outer side surface 122 is the thickness of the uniform cross-section hat-shaped hyperbolic long truss 10, and its value can be formulated as needed.

[0040] Further, in this embodiment, the center of the bottom line 113 is set as the middle point 101, and the middle point 101 is used as the perpendicular line of the bottom line 113 to obtain the cap cavity axis 102. In this embodiment, the cap cavity axis 102 is perpendicular to the top plate 13 and passes through the midpoint of the top plate 13, so that the cap cavity is an isosceles trapezoidal structure. Specifically, the lengths of the two side plates 12 are the same, and the angles between the two side plates 12 and the top plate 13 and the bottom line 113 are the same, so that any cross section perpendicular to the top plate 13 along the length direction of the top plate 13 is an isosceles trapezoid. Further, the cap cavity is symmetrically arranged about the cap cavity axis 102, and the distances between the two end points of the top plate 13 and the cap cavity axis 102 are both Lt / 2, and the distances between the first end point 111 and the second end point 112 and the cap cavity axis 102 are both Lb / 2, and the formula Lt=Lb-2*H*cotα can be obtained, and the cross-sectional dimensions of the entire structure along the length direction and the internal area of ​​the cap cavity remain unchanged in theory. For example, Lb, H, α and thickness can be determined by considering the load on the structure and other conditions, which will not be described in detail here.

[0041] Combination Figure 5 and Figure 6 As shown, in this embodiment, the equal-section hat-shaped hyperbolic long girder 10 is a continuous torsion structure, and is provided with a right torsion section 103, a non-twisted section 104, and a left torsion section 105, that is, the equal-section hat-shaped hyperbolic long girder 10 will be twisted or not twisted in different directions and degrees at the corresponding cross-sectional position to adapt to subsequent use scenarios. Furthermore, in this embodiment, a first chamfer 106 is provided on the inner side of the connection between the top plate 13 and the side plate 12, and a second chamfer 107 is provided on the inner side of the connection between the bottom plate 11 and the side plate 12 to prevent the edges from being worn and affecting the quality acceptance of the entire structure.

[0042] Further, in the present embodiment, the equal-section hat-shaped hyperbolic long stringer 10 is arranged on the skin top surface 201 of the skin 20, and the skin 20 is arranged with a skin shape distribution 30. Specifically, a plurality of reference planes 301 are arranged at an angle on the skin shape distribution 30, and trajectory lines 302 are arranged accordingly. Exemplarily, in the present embodiment, the reference planes 301, the trajectory lines 302 and the equal-section hat-shaped hyperbolic long stringers 10 are arranged one by one, so as to ensure the high-precision and high-efficiency installation of the equal-section hat-shaped hyperbolic long stringers 10. Exemplarily, each reference plane 301 is located between the two bottom plates 11 of the corresponding equal-section hat-shaped hyperbolic long stringer 10, and the reference planes 301 and the trajectory lines 302 are arranged along the length direction of the top plate 13, so as to accurately position and install the equal-section hat-shaped hyperbolic long stringers 10 on the skin 20.

[0043] Combination Figure 4 and Figure 6As shown, in this embodiment, the reference plane 301 and the trajectory line 302 intersect at the middle point 101 at the axis 102 of the hat cavity, that is, the three can be positioned through the middle point 101 to ensure the one-to-one correspondence between the reference plane 301, the trajectory line 302 and the uniform cross-section hat-shaped hyperbolic long stringer 10. Exemplarily, the trajectory line 302 is located at the center of the right torsion section 103, the non-twisted section 104 and the left torsion section 105. Further, in this embodiment, the angle between the reference plane 301 and the axis 102 of the hat cavity is set to γ. When the uniform cross-section hat-shaped hyperbolic long stringer is manufactured by hot molding, the range of γ is set to [α-90°, 90°-α], thereby facilitating the subsequent uniform cross-section hat-shaped hyperbolic long stringer 10 to be smoothly molded and manufactured by hot molding. Accordingly, when other methods such as manual manufacturing are used, it can be set as needed, and there is no limitation here. Exemplarily, since the equal-section hat-shaped hyperbolic long girder 10 in this embodiment is torsion along its length direction, that is, the position of the hat cavity axis 102 is constantly changing, that is, the position of the middle point 101 is also constantly changing, and then the position of the reference plane 301 passing through the middle point 101 is also constantly changing, and γ is set to continuously change in this embodiment to meet the corresponding placement requirements.

[0044] like Figure 7 As shown, in this embodiment, the middle-section hat-shaped hyperbolic long girder 10 is manufactured by using a mold and a laminate 500, so as to ensure its integration effect, and the setting of auxiliary points and auxiliary lines thereon can ensure the accuracy of manufacturing, so that the corresponding parameter settings of any cross section along the length direction are the same. Exemplarily, in this embodiment, the mold includes a first mold, a first clamping plate 42, a second clamping plate 43 and a second mold 44, and the first mold is provided with a hat cavity 411 and an extension 412, and a target surface 501 is provided in the hat cavity 411.

[0045] Specifically, in this embodiment, the opening of the cap cavity 411 faces upward, and the two sides of the cap cavity 411 extend outward to form an extension 412, and the bottom edge of the cap cavity 411 is arranged parallel to the extension 412, and the cap cavity 411 is an isosceles trapezoidal structure. Exemplarily, the laminate 500 is mounted on the extension 412, and the first clamping plate 42 and the second clamping plate 43 can be pressed against the two sides of the laminate 500 on the extension 412, so that the position of the laminate 500 can be fixed. Furthermore, the second mold 44 has the same structure as the cap cavity 411, but the size of the second mold 44 is smaller than the cap cavity 411. Specifically, the second mold 44 can press the laminate 500 into the cap cavity 411 from top to bottom above the laminate 500 until the target surface 501, so as to support the top plate 13 and the side plate 12, and the portion clamped by the first clamping plate 42, the second clamping plate 43 and the extension 412 can be made into the bottom plate 11. Exemplarily, in this embodiment, the second mold 44 can press the laminate 500 from top to bottom at the midpoint of the cap cavity 411 above the laminate 500 to the target surface 501 at the angle γ between the reference plane 301 and the cap cavity axis 102 to support the top plate 13 and the side plate 12, thereby ensuring that the structure formed by the pressurization meets the quality requirements of the uniform cross-section hat-shaped hyperbolic long girders 10, and uniformly manufacture and install the uniform cross-section hat-shaped hyperbolic long girders 10 through the reference plane 301, which can also ensure the product accuracy and quality, and improve the overall processing and installation efficiency. Exemplarily, the laminate 500 is configured as a carbon fiber composite material CFC (Carbon Fibre Composite).

[0046] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A uniform cross-section hat-shaped hyperbolic long girder, characterized in that: include: A bottom plate (11), a side plate (12) and a top plate (13), wherein the side plates (12) are arranged on both sides of the top plate (13), and the other side of the side plate (12) is connected to the bottom plate (11), a bottom line (113) is obtained by connecting the inner sides of the two bottom plates (11), the bottom line (113) is arranged parallel to the top plate (13), and in any cross section of the top plate (13) perpendicular to the length direction of the top plate (13), the relative distance between the top plate (13) and the bottom line (113), the relative distance between the two bottom plates (11), the width of the top plate (13), the angle between the bottom line (113) and the side plate (12), and the angle between the top plate (13) and the side plate (12) are all constant.

2. The uniform cross-section hat-shaped hyperbolic long stringer according to claim 1, characterized in that: The bottom plate (11), the side plate (12) and the top plate (13) are an integrated structure and are manufactured using a mold.

3. The uniform cross-section hat-shaped hyperbolic long stringer according to claim 2, characterized in that: The mold comprises a first mold and a second mold (44), wherein the first mold is provided with a cap cavity portion (411) and an extension portion (412), and the laminate (500) is mounted on the extension portion (412), and the second mold (44) presses the laminate (500) into the cap cavity portion (411) from top to bottom until the target surface (501) is reached, thereby forming the top plate (13) and the side plate (12).

4. The uniform cross-section hat-shaped hyperbolic long stringer according to claim 3, characterized in that: The mold is also provided with a first clamping plate (42) and a second clamping plate (43), and the first clamping plate (42) and the second clamping plate (43) can be pressed against the two sides of the laminate (500) on the extension part (412) respectively to form the base plate (11).

5. The uniform cross-section hat-shaped hyperbolic long stringer according to claim 3, characterized in that: The bottom plate (11) is arranged in affixed relation to the skin (20), and the skin (20) is arranged in a skin shape distribution (30), a reference plane (301) is arranged at an angle on the skin shape distribution (30), and a track line (302) is arranged, the reference plane (301) is located between the two bottom plates (11), and the reference plane (301) and the track line (302) are both arranged along the length direction of the top plate (13).

6. The uniform cross-section hat-shaped hyperbolic long stringer according to claim 5, characterized in that: A first endpoint (111) and a second endpoint (112) are respectively arranged on the inner sides of the two bottom plates (11) in any cross section perpendicular to the top plate (13) along the length direction of the top plate (13); a line connecting the first endpoint (111) and the second endpoint (112) can obtain the bottom line (113); the center of the bottom line (113) is set as the middle point (101); a perpendicular line to the bottom line (113) with the middle point (101) as the vertical line can obtain the cap cavity axis (102); the cap cavity axis (102) is perpendicular to the top plate (13) and passes through the midpoint of the top plate (13); the reference plane (301) and the trajectory line (302) both intersect with the cap cavity axis (102) at the middle point (101).

7. The uniform cross-section hat-shaped hyperbolic long stringer according to claim 6, characterized in that: The included angle between the bottom line (113) and the side plate (12) is set to α, the included angle between the top plate (13) and the side plate (12) is set to β, and α+β=180°, and the range of α is set to (0°, 90°].

8. The uniform cross-section hat-shaped hyperbolic long stringer according to claim 7, characterized in that: When the uniform cross-section hat-shaped hyperbolic long stringer is manufactured by hot molding, the angle between the reference plane (301) and the hat cavity axis (102) is set to γ, and the range of γ is set to [α-90°, 90°-α].

9. The uniform cross-section hat-shaped hyperbolic long stringer according to claim 5, characterized in that: The uniform cross-section hat-shaped hyperbolic long girder (10) is provided with a right torsion section (103), a non-twist section (104) and a left torsion section (105), and the trajectory line (302) is located at the center of the three.

10. The uniform cross-section hat-shaped hyperbolic long stringer according to claim 8, characterized in that: The second mold (44) can be located above the cap cavity (411) and at the midpoint of the laminate (500) and squeezed from top to bottom at an angle of γ to the target surface (501) to form the top plate (13) and the side plate (12).

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