CN116374005A

CN116374005A - Longitudinal beam structure, frame assembly and manufacturing method of longitudinal beam structure

Info

Publication number: CN116374005A
Application number: CN202310516583.2A
Authority: CN
Inventors: 刘海洋; 赵明招; 张磊; 向琅; 王桢; 于佳男; 郑楚夕; 李科伟; 张彦周
Original assignee: FAW Jiefang Automotive Co Ltd
Current assignee: FAW Jiefang Automotive Co Ltd
Priority date: 2023-05-09
Filing date: 2023-05-09
Publication date: 2023-07-04

Abstract

The invention belongs to the technical field of frames, and discloses a longitudinal beam structure, a frame assembly and a longitudinal beam structure manufacturing method. The longitudinal beam structure comprises a first structural member and a second structural member; the first structural member comprises a first box-shaped part and a first groove-shaped part which are sequentially connected, and the first groove-shaped part is connected above the first box-shaped part in the Z direction; the second structural member comprises a second box-shaped part, and the first box-shaped part is buckled and connected with the second box-shaped part to form a longitudinal beam cavity. The longitudinal beam structure can ensure bending resistance and torsion resistance, is beneficial to realizing a light-weight target and improves the assembly manufacturability of the vehicle.

Description

Longitudinal beam structure, frame assembly and manufacturing method of longitudinal beam structure

Technical Field

The invention relates to the technical field of frames, in particular to a longitudinal beam structure, a frame assembly and a longitudinal beam structure manufacturing method.

Background

The frame is a frame structure which is bridged on the front axle and the rear axle of the automobile and is a matrix of the automobile. Generally consists of two longitudinal beams and several transverse beams, supported on the wheels via suspension means, a front axle and a rear axle. The frame must have sufficient strength and rigidity to withstand the load of the vehicle and the impact transmitted from the wheels. The frame is used for supporting and connecting the assemblies of the automobile, so that the assemblies maintain relatively correct positions and bear various loads inside and outside the automobile. Therefore, the performance of the frame can directly influence the reliability of the whole vehicle. When the vehicle is running, various alternating loads can be generated on the vehicle frame, the vehicle frame can generate a twisting deformation trend and a bending deformation trend in a longitudinal plane, and the vehicle frame needs to have enough strength and proper rigidity to ensure the relative accuracy of the positions of all parts on the vehicle frame.

The frame longitudinal beam of the commercial vehicle is a key bearing part and generally adopts a groove-shaped section structure; for some vehicles with heavy load and severe driving conditions, the requirements of the frame on bending resistance and torsion resistance are higher, and a box-shaped section structure is generally adopted. The longitudinal beam with the groove-shaped cross section structure and the longitudinal beam with the box-shaped cross section structure are large in weight, and the requirement of vehicle weight reduction cannot be met.

Accordingly, there is a need for a rail structure, a frame assembly, and a rail structure manufacturing method that solve the above problems.

Disclosure of Invention

According to one aspect of the present invention, it is an object to provide a side member structure capable of securing bending and torsion resistance thereof, and facilitating realization of a light-weight object, improving vehicle assembly manufacturability.

To achieve the purpose, the invention adopts the following technical scheme:

a stringer structure comprising:

the first structural member comprises a first box-shaped part and a first groove-shaped part which are sequentially connected, and the first groove-shaped part is connected above the first box-shaped part in the Z direction;

the second structural member comprises a second box-shaped part, and the first box-shaped part is buckled and connected with the second box-shaped part to form a longitudinal beam cavity.

As a preferable scheme of the longitudinal beam structure provided by the invention, the first groove-shaped part comprises a first upper wing plate and a first upper web plate which are connected in turn in an angle; the first box-shaped part comprises a first middle web plate, a first lower web plate and a first lower wing plate which are connected in sequence in an angle, wherein the first middle web plate is connected with the first upper web plate, and the first lower wing plate and the first middle web plate are positioned on the same side of the first lower web plate; two ends of the second box-shaped part are respectively connected with the first lower wing plate and the first middle web plate.

As the preferable scheme of the longitudinal beam structure provided by the invention, the second box-shaped part comprises a second middle web plate and a second lower web plate which are connected in sequence in an angle, the side edges of the second middle web plate, which are far away from the second lower web plate, are fixedly connected to the connection part of the first upper web plate and the first middle web plate, and the side edges of the first lower web plate, which are far away from the first lower web plate, are fixedly connected to the side parts of the second lower web plate.

As the preferable scheme of the longitudinal beam structure provided by the invention, the second box-shaped part further comprises a second lower wing plate, the second lower wing plate is connected with the second lower web plate, the second lower wing plate and the second middle web plate are positioned on the same side of the second lower web plate, the side edge of the second middle web plate, which is far away from the second lower web plate, is fixedly connected with the connecting part of the first upper web plate and the first middle web plate, and the second lower wing plate is connected with the first lower wing plate.

As a preferred scheme of the longitudinal beam structure provided by the invention, the second structural member further comprises a second groove-shaped part, the second groove-shaped part comprises a second upper wing plate and a second upper web plate which are sequentially connected in an angle mode, the second upper web plate is connected above the second middle web plate in the Z direction, the second upper wing plate is parallel and connected below the first upper wing plate, and the second upper web plate is parallel and connected with the first upper web plate.

As a preferable scheme of the longitudinal beam structure provided by the invention, the second structural member further comprises a second upper connecting plate, wherein the second upper connecting plate is connected above the second middle web plate in the Z direction, and the second upper connecting plate is parallel to and connected with the first upper web plate.

As a preferable mode of the longitudinal beam structure provided by the invention, the second lower wing plate is erected and connected above the first lower wing plate.

As a preferable scheme of the longitudinal beam structure, the longitudinal beam structure further comprises a brace rod, one end of the brace rod is connected with the first lower web plate, and the other end of the brace rod is connected with the second lower web plate.

As the preferable scheme of the longitudinal beam structure provided by the invention, a plurality of stay bars are arranged at intervals along the Z direction, and are respectively clamped between the first lower web plate and the second lower web plate.

According to a further aspect of the present invention, there is provided a frame assembly comprising a frame front cross member, a frame rear cross member, and a plurality of frame center cross members, and further comprising two longitudinal beam structures as set forth in any one of the above aspects, the two longitudinal beam structures being arranged parallel to each other and spaced apart in the Y direction, the frame front cross member and the frame rear cross member being arranged parallel to the Y direction and spaced apart at both ends of the two longitudinal beam structures in the X direction, the plurality of frame center cross members being arranged spaced apart in the X direction between the two longitudinal beam structures and between the frame front cross member and the frame rear cross member.

According to still another aspect of the present invention, it is an object to provide a stringer structure manufacturing method which can be used to manufacture a stringer structure according to any one of the above-described aspects, the stringer structure manufacturing method including:

step S1, rolling an original plate material to form the first structural member and the second structural member;

s2, fixedly connecting the first structural member and the second structural member to form a longitudinal beam structure;

and S3, correcting the straightness of the longitudinal beam structure.

The invention has the beneficial effects that:

the longitudinal beam structure provided by the invention comprises a first structural member and a second structural member. The first structural member comprises a first box-shaped part and a first groove-shaped part which are sequentially connected, and the first groove-shaped part is connected above the first box-shaped part in the Z direction; the second structural member comprises a second box-shaped part, and the first box-shaped part is buckled and connected with the second box-shaped part to form a longitudinal beam cavity. That is, the first groove-shaped portion can form a groove-shaped section, a larger arrangement space is reserved for the vehicle, the vehicle tube bundle, the wire harness and other parts can be arranged in a straightening mode conveniently, and improvement of vehicle assembly manufacturability is facilitated. The first box-shaped part and the second box-shaped part are buckled to form a longitudinal beam cavity, namely a box-shaped section is formed, so that bending resistance and torsion resistance of the longitudinal beam structure are improved, and meanwhile, light weight is realized.

Drawings

FIG. 1a is a schematic illustration of a frame assembly according to an embodiment of the present invention;

FIG. 1b is an enlarged view of a portion of the structure labeled A in FIG. 1 a;

FIG. 2a is a cross-sectional view of a stringer architecture provided in accordance with a first embodiment of the present invention;

FIG. 2B is an enlarged view of a portion of the structure labeled B in FIG. 2 a;

FIG. 3 is a cross-sectional view of a stringer construction provided in accordance with a second embodiment of the present invention;

FIG. 4a is a cross-sectional view of a stringer construction provided in accordance with a third embodiment of the present invention;

FIG. 4b is an enlarged view of a portion of the structure labeled C in FIG. 4 a;

FIG. 5 is a cross-sectional view of a stringer construction provided in accordance with a fourth embodiment of the present invention;

FIG. 6a is a cross-sectional view of a stringer construction provided in accordance with a fifth embodiment of the present invention;

fig. 6b is a partial enlarged view of the structure marked D in fig. 6 a.

In the figure:

1. a stringer structure;

10. a frame front cross member; 20. a frame rear cross member; 30. a frame middle cross member; a connecting rod frame 40;

100. a first structural member; 110. a first upper wing plate; 120. a first upper web; 130. a first central web; 140. a first lower web; 150. a first lower wing plate;

200. a second structural member; 210. a second central web; 220. a second lower web; 230. a second lower wing plate; 240. a second upper wing plate; 250. a second upper web; 260. a second upper connecting plate;

300. a stringer cavity;

400. a brace rod; 410. a boss structure.

Detailed Description

The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.

In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", "left", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

Example 1

The embodiment provides a longitudinal beam structure and a frame assembly. Fig. 1a shows a schematic structural diagram of a frame assembly according to an embodiment of the present invention, and referring to fig. 1a, the frame assembly includes a frame front cross member 10, a frame rear cross member 20, and a plurality of frame middle cross members 30, and further includes two longitudinal beam structures 1 according to this embodiment.

Specifically, the two side member structures 1 are arranged parallel to each other and spaced apart in the Y direction, and the frame front cross member 10 and the frame rear cross member 20 are arranged parallel to the Y direction and spaced apart at both ends of the two side member structures 1 in the X direction. The frame front cross member 10 is connected to one ends of the two side member structures 1 by two connecting rod brackets 40, respectively. As shown in fig. 1b, two connecting rod brackets 40 are disposed parallel to the X direction, respectively connected to the opposite sides of the two longitudinal beam structures 1, and respectively connected to the two ends of the front cross member 10 of the vehicle frame. The frame rear cross member 20 is connected at both ends thereof to opposite sides of the two side member structures 1.

More specifically, a plurality of the frame center cross members 30 are disposed between the two side member structures 1 at intervals in the X-direction and between the frame front cross member 10 and the frame rear cross member 20. The ends of the cross member 30 are connected to opposite sides of the two longitudinal beam structures 1.

FIG. 2a illustrates a cross-sectional view of a stringer architecture provided in accordance with a first embodiment of the present invention; fig. 2B shows a partial enlargement of the structure marked B in fig. 2 a. Referring to fig. 2a and 2b, the stringer structure 1 provided in this embodiment includes a first structural member 100 and a second structural member 200. The first structural member 100 includes a first box-shaped portion and a first groove-shaped portion that are sequentially joined, the first groove-shaped portion being joined above the first box-shaped portion in the Z-direction; the second structural member 200 includes a second box portion to which the first box portion is snap-fit to form a stringer cavity 300. By the cooperation of the first box-shaped portion and the second box-shaped portion, the light-weight object can be achieved on the basis of ensuring the bending resistance and torsion resistance of the side member structure 1. Through the first groove-shaped part, a larger arrangement space is reserved for the vehicle, so that the vehicle tube bundles, wire harnesses and other parts can be arranged in a straightening mode conveniently, and the vehicle assembly manufacturability is improved.

In particular, with continued reference to fig. 2a and 2b, the first channel portion includes a first upper wing panel 110 and a first upper web 120 joined in sequence at right angles, the first upper web 120 being disposed parallel to the Z-direction. The first box includes a first middle web 130, a first lower web 140, and a first lower wing 150 that are joined in angular sequence. The first middle web 130 is joined to the first upper web 120 at an obtuse angle, and the first lower web 140 and the first middle web 130 are also at an obtuse angle. The first lower web 140 is arranged parallel to the Z-direction and the first lower wing plate 150 is perpendicular to the first lower web 140. The first lower wing panel 150 is located on the same side of the first lower web 140 as the first middle web 130. The second box-shaped portion has two ends connected to the first lower wing plate 150 and the first middle web 130, respectively. The rounded transitions are used between the first upper wing plate 110 and the first upper web 120, between the first upper web 120 and the first middle web 130, between the first middle web 130 and the first lower web 140, and between the first lower web 140 and the first lower wing plate 150. Through first upper web 120, first well web 130 and first lower web 140, constitute ladder type longeron web structure, compare in the planar web structure of traditional frame longeron, longeron structure 1 that this embodiment provided can provide stronger bending resistance and torsional properties, on the basis that satisfies the performance demand, can attenuate sheet material and reduce local reinforcing plate, and then improve the lightweight level of frame.

Still more particularly, the second structural member 200 includes a joined second channel portion and a second box portion. The second channel portion includes a second upper wing plate 240 and a second upper web 250 joined in sequence at right angles, the second upper web 250 being disposed parallel to the Z-direction. The second upper wing plate 240 is parallel to and abuts against the lower part of the first upper wing plate 110, or the second upper wing plate 240 and the first upper wing plate 110 are parallel, and a certain gap can be left between them. The second upper web 250 is parallel to and connected to the first upper web 120, and in this embodiment, the second upper web 250 and the first upper web 120 are connected by welding, riveting or screwing.

More specifically, the second box includes a second middle web 210, a second lower web 220, and a second lower wing 230 that are joined in angular sequence. The second upper web 250 is joined above the second middle web 210 in the Z-direction, and the angle between the second middle web 210 and the second upper web 250 is an obtuse angle. The connection between the second upper web 250 and the second middle web 210 abuts against the connection between the first upper web 120 and the first middle web 130. The second lower wing plate 230 and the second lower web 220 are connected to each other at a right angle, and the second lower wing plate 230 extends toward the direction in which the first lower wing plate 150 is located. The side edge of the first lower wing plate 150 remote from the first lower web 140 is welded to the end of the second lower wing plate 230 as shown in fig. 2 b.

The present embodiment also provides a method for manufacturing a stringer structure, which can be used to manufacture the stringer structure 1 provided in the present embodiment, the method for manufacturing a stringer structure including the steps of:

step S1, rolling the original plate material to form the first structural member 100 and the second structural member 200.

Specifically, in step S1, the original sheet is rolled one or more times to form the integrally formed first structural member 100 composed of the first upper wing plate 110, the first upper web 120, the first middle web 130, the first lower web 140 and the first lower wing plate 150. In this step, one or more passes of rolling are performed on the other raw sheet material to form the integrally formed second structural member 200 composed of the second upper wing 240, the second upper web 250, the second middle web 210, the second lower web 220 and the second lower wing 230.

It should be noted that, before the rolling step, the original plate needs to be trimmed, such as performing pretreatment work of rust removal, dirt removal, leveling, etc., so as to ensure that the surface quality and flatness of the original plate meet the requirements.

Step S2, fixedly connecting the first structural member 100 and the second structural member 200 to form the stringer structure 1.

Specifically, in step S2, the second upper web 250 and the first upper web 120 are fixedly connected by welding, riveting, or screwing, and the first lower wing plate 150 and the second lower wing plate 230 are connected by welding.

And S3, correcting the straightness of the longitudinal beam structure 1.

Specifically, in step S3, the straightness of the stringer structure 1 may be corrected by using a straightening machine or a manual correction manner, so that the form and position tolerance thereof meets the requirement.

Example two

The present embodiment also provides a rail structure and frame assembly. Fig. 3 is a cross-sectional view of a stringer structure provided in a second embodiment of the present invention, and referring to fig. 3, the difference between the present embodiment and the first embodiment is only the structure of the second structural member 200. The second structural member 200 provided in this embodiment is not provided with a second groove-shaped portion, but is provided with a second upper connection plate 260 at the top end of the second box-shaped portion. The second upper connecting plate 260 is joined above the second middle web 210 in the Z-direction, and the second upper connecting plate 260 is parallel to and connected to the first upper web 120.

Specifically, the second upper connection plate 260 may be welded, riveted, or screwed to the first upper web 120.

Example III

The present embodiment also provides a rail structure and frame assembly. Fig. 4a shows a cross-sectional view of a stringer structure provided by a third embodiment of the present invention, fig. 4b shows an enlarged partial view of the structure marked C in fig. 4a, and referring to fig. 4a and 4b, this embodiment differs from the first embodiment only in the structure of the second structural member 200. The second structural member 200 provided in this embodiment is not provided with the second groove-shaped portion, but is directly connected to the first structural member 100 by the second box-shaped portion.

Specifically, the second middle web 210 is welded and fixedly connected to the connection portion between the first upper web 120 and the first middle web 130 away from the side edge of the second lower web 220. The side edge of the first lower wing plate 150 remote from the first lower web 140 is welded and fastened to the end of the second lower wing plate 230.

Example IV

The present embodiment also provides a rail structure and frame assembly. Fig. 5 shows a cross-sectional view of a stringer structure provided by a fourth embodiment of the present invention, and referring to fig. 5, this embodiment differs from the third embodiment only in the structural form of the second box portion.

Specifically, the second box includes only a second middle web 210 and a second lower web 220 connected in angular sequence. The second lower web 220 is disposed parallel to the Z direction, and an end of the second lower web 210 extends slightly beyond the end of the first lower web 140, and a side edge of the first lower wing plate 150, which is far from the first lower web 140, is directly welded to a side portion of the second lower web 220.

Example five

The present embodiment also provides a rail structure and frame assembly. Fig. 6a shows a cross-sectional view of a stringer structure provided in a fifth embodiment of the present invention, fig. 6b shows a partially enlarged view of a structure marked D in fig. 6a, and referring to fig. 6a and 6b, the present embodiment is different from the third embodiment in that the connection manner of the first lower wing plate 150 and the second lower wing plate 230 is different, and the stringer structure 1 provided in the present embodiment further includes a brace 400.

Specifically, the sum of the lengths of the second lower wing plate 230 and the first lower wing plate 150 is greater than the distance between the first lower web 140 and the second lower web 220, and the second lower wing plate 230 is installed above the first lower wing plate 150 and is fixedly connected by welding.

More specifically, the stay 400 has one end connected to the first lower web 140 and the other end connected to the second lower web 220. The brace 400 contributes to an increase in the local support stiffness of the stringer structure 1. Optionally, a plurality of the braces 400 are disposed, and the plurality of the braces 400 are disposed at intervals along the Z direction, and each of the braces is sandwiched between the first lower web 140 and the second lower web 220. By the above arrangement, the local support rigidity of the side member structure 1 can be further improved.

More specifically, in the vehicle frame assembly provided in the present embodiment, the first upper web 120 is connected to the connecting rod frame 40 by a bolt, and the first lower web 140 and the second lower web 220 are connected to the connecting rod frame 40 by one long bolt. The long bolt penetrates through the second lower web 220 and the first lower web 140 in sequence and is screwed to the connecting rod frame 40.

Preferably, the stay 400 may be positioned at a location where the load is large, such as the long bolt connection described above. At this time, it is necessary to provide the stay 400 in a hollow structure, and to secure coaxiality of the stay 400 and the through hole for mounting the long bolt at the time of mounting. The long bolt penetrates through the stay bar 400 and is screwed to the connecting rod frame 40.

Preferably, referring to fig. 6b, the end of the stay 400 is provided with a boss structure 410. The boss structure 410 has a diameter smaller than that of the stay bar 400, and the boss structure 410 can be inserted into the through hole of the second lower web 220 for mounting the long bolt, thereby further ensuring the coaxiality of the stay bar 400 and the through hole for mounting the long bolt.

Specifically, in step S2, a plurality of stay bars 400 are fixedly connected between the first lower web 140 and the second lower web 220, and the above-mentioned fixed connection manner may be implemented by using a spot welding process.

Before the brace 400 is installed, the first structural member 100 and the second structural member 200 need to be reliably limited by a fixture to ensure that the dimensional accuracy of the stringer structure 1 meets the requirement.

More specifically, after the stay 400 is installed, the second upper web 250 and the first upper web 120 are fixedly connected by welding, riveting or screwing, and the first lower wing plate 150 and the second lower wing plate 230 are connected by welding.

And S3, correcting the straightness of the longitudinal beam structure 1.

It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the invention. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.

Claims

1. Longitudinal beam structure, its characterized in that includes:

the first structural member (100) comprises a first box-shaped part and a first groove-shaped part which are sequentially connected, and the first groove-shaped part is connected above the first box-shaped part in the Z direction;

the second structural member (200), the second structural member (200) comprises a second box-shaped part, and the first box-shaped part is buckled and connected with the second box-shaped part to form a longitudinal beam cavity (300).

2. The stringer structure of claim 1, wherein the first channel includes a first upper wing panel (110) and a first upper web (120) joined in angular sequence; the first box-shaped part comprises a first middle web plate (130), a first lower web plate (140) and a first lower wing plate (150) which are connected in sequence in an angle, the first middle web plate (130) is connected with the first upper web plate (120), and the first lower wing plate (150) and the first middle web plate (130) are positioned on the same side of the first lower web plate (140); both ends of the second box-shaped portion are connected to the first lower wing plate (150) and the first middle web plate (130), respectively.

3. The stringer structure of claim 2, wherein the second box includes a second middle web (210) and a second lower web (220) joined in sequence at an angle, a lateral edge of the second middle web (210) distal from the second lower web (220) being fixedly attached to a junction of the first upper web (120) and the first middle web (130), a lateral edge of the first lower wing (150) distal from the first lower web (140) being fixedly attached to a lateral portion of the second lower web (220).

4. The stringer structure of claim 3, wherein said second box further comprises a second lower wing panel (230), said second lower wing panel (230) being joined to said second lower web (220), said second lower wing panel (230) being on the same side of said second lower web (220) as said second middle web (210), said second lower wing panel (230) being connected to said first lower wing panel (150).

5. The stringer structure of claim 4, wherein the second structural member (200) further includes a second channel portion including a second upper wing plate (240) and a second upper web plate (250) joined in angular sequence, the second upper web plate (250) joined above the second middle web plate (210) in the Z-direction, the second upper wing plate (240) being parallel and connected below the first upper wing plate (110), the second upper web plate (250) being parallel and connected to the first upper web plate (120).

6. The stringer structure of claim 4, wherein the second structural member (200) further includes a second upper web (260), the second upper web (260) being joined above the second middle web (210) in the Z-direction, the second upper web (260) being parallel and connected to the first upper web (120).

7. The rail structure of claim 4, wherein the second lower wing panel (230) is erected and connected above the first lower wing panel (150).

8. The stringer structure of claim 7, further comprising a brace (400), one end of the brace (400) being connected to the first lower web (140) and the other end being connected to the second lower web (220).

9. The stringer structure of claim 8, wherein the plurality of braces (400) are arranged at intervals along the Z-direction, each of the plurality of braces (400) being sandwiched between the first lower web (140) and the second lower web (220).

10. Frame assembly, characterized in that it comprises a frame front cross member (10), a frame rear cross member (20) and a plurality of frame middle cross members (30), and further comprises two longitudinal beam structures according to any one of claims 1-9, wherein the two longitudinal beam structures are parallel to each other and are arranged at intervals along the Y direction, the frame front cross member (10) and the frame rear cross member (20) are arranged parallel to the Y direction and are arranged at intervals at two ends of the two longitudinal beam structures along the X direction, and the plurality of frame middle cross members (30) are arranged between the two longitudinal beam structures at intervals along the X direction and are positioned between the frame front cross member (10) and the frame rear cross member (20).

11. A stringer construction manufacturing method, characterized in that it can be used for manufacturing a stringer construction according to any of claims 1-9, comprising:

s1, rolling an original plate material to form the first structural member (100) and the second structural member (200);

s2, fixedly connecting the first structural member (100) and the second structural member (200) to form a longitudinal beam structure (1);

and S3, correcting the straightness of the longitudinal beam structure (1).