A vehicle with a non-load-bearing body, a frame beam and a method for manufacturing the same

Abstract

This invention discloses a vehicle with a non-load-bearing body, a frame beam, and a method for manufacturing the same. The frame beam is applied to vehicles with a non-load-bearing body and includes a first beam and a second beam. The first beam includes an open beam and a cover beam. The open beam includes a U-shaped segment with an inner cavity and a side opening, the side opening communicating with the inner cavity. The second beam is a rectangular beam and includes an insert segment located within the inner cavity of the U-shaped beam segment. The cover beam covers the side opening, and the cover beam and the open beam are welded together. The open beam and the second beam are also welded together. This frame beam employs a segmented design, allowing for convenient strength distribution according to the vehicle's load-bearing requirements, thus largely avoiding situations of excessive or insufficient load-bearing capacity.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, specifically to a vehicle with a non-load-bearing body, a frame beam, and a method for manufacturing the same. Background Technology

[0002] Vehicle bodies are classified into unibody and body-on-frame designs. Unibody vehicles do not have two independent frame beams, while body-on-frame vehicles have two independent frame beams. Generally speaking, most passenger cars and buses use unibody construction, while trucks, off-road vehicles, and sport / suburban utility vehicles (SUVs) primarily use body-on-frame construction.

[0003] Currently, for vehicles using non-load-bearing bodies, their frame beams are basically one-piece rectangular beams or U-shaped beams, etc. The front and rear structures of the frame beams are completely identical, which can easily lead to situations where the load-bearing capacity in some areas is excessive or insufficient, which is not conducive to the rational structural design of the frame beams.

[0004] Therefore, how to provide a solution to overcome or alleviate the above-mentioned defects remains a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to provide a vehicle with a non-load-bearing body, a frame beam, and a method for manufacturing the same. The frame beam adopts a segmented design, which allows for easy strength distribution of the frame beam according to the vehicle's load-bearing requirements, thereby largely avoiding situations of excessive or insufficient load-bearing capacity.

[0006] To solve the above-mentioned technical problems, the present invention provides a frame beam applicable to vehicles with a non-load-bearing body; it includes a first beam and a second beam, the first beam including an open beam and a cover beam, the open beam including a U-shaped beam segment having an inner cavity and a side opening, the side opening communicating with the inner cavity, the second beam being a rectangular beam including an insert segment located in the inner cavity of the U-shaped beam segment, the cover beam covering the side opening, the cover beam and the open beam being welded and fixed, and the open beam and the second beam being welded and fixed.

[0007] In the aforementioned design, the chassis beam adopts a segmented design. The first beam includes an open beam, which can be directly fabricated through stamping or other methods, making it readily available and allowing for more flexible structural design. Simultaneously, the first beam also includes a cover beam, which covers the side opening of the open beam. Thus, the first beam ultimately becomes a closed beam, ensuring its structural strength. Furthermore, the second beam is a rectangular beam, itself a closed beam, resulting in even higher structural strength.

[0008] After assembly, the structural strength of the frame beam is relatively low in the first beam section and relatively high in the second beam section. This allows for easy strength distribution of the frame beam according to the vehicle's load-bearing requirements, which can largely avoid situations of excessive or insufficient load-bearing capacity and is also conducive to the lightweight design of the frame beam.

[0009] Optionally, the open beam further includes a flange beam segment, the U-shaped beam segment includes a bottom beam portion and two oppositely arranged side beam portions, the flange beam segment is connected to the side beam portions and is located at the end of the side beam portions away from the bottom beam portion, and the cover beam and the flange beam segment are welded and fixed.

[0010] Optionally, the wing beam segment and the bottom beam portion are located on both sides of the side beam portion.

[0011] Optionally, the cover beam is also welded and fixed to the second beam.

[0012] Optionally, the first beam and the second beam are welded together using a carbon dioxide shielded welding process.

[0013] Optionally, the U-shaped beam segment includes a bottom beam portion and two oppositely arranged side beam portions. The end of the embedded segment away from the bottom beam portion is connected to the first beam body through two straight welds. The embedded segment also has an axial inner end and an axial outer end. The axial inner end is connected to the first beam body through a U-shaped weld, and the axial outer end is connected to the first beam body through a rectangular weld.

[0014] Optionally, the open beam is further provided with at least one weld groove, in which a groove weld is formed, and the groove weld is used to connect with the second beam body.

[0015] Optionally, the first beam and the second beam are welded together using a suspended resistance welding process, and the cover beam is provided with process holes.

[0016] Optionally, the cover beam is provided with a flange on the inner wall of the process hole.

[0017] Optionally, the first beam and the second beam are welded together using a suspension resistance welding process, and the embedded section is covered with structural adhesive.

[0018] Optionally, the first beam body and the second beam body are welded together by a laser welding process.

[0019] Optionally, a laser welding seam is formed between the first beam body and the second beam body, and the laser welding seam is in an "×" shape or a "□" shape.

[0020] The present invention also provides a vehicle with a non - load - bearing body, including a vehicle frame. The vehicle frame includes two large beams arranged at intervals in the transverse direction, and the large beams are the vehicle frame large beams as described above.

[0021] Since the above - mentioned vehicle frame large beam already has the above - mentioned technical effects, then the vehicle with this vehicle frame large beam should also have similar technical effects, so details are not described here.

[0022] The present invention also provides a preparation method for a vehicle frame large beam, which is applicable to the preparation of the above - mentioned vehicle frame large beam. The preparation method includes: Step S1, configuring the open beam, the cover beam and the second beam body; Step S2, welding the open beam and the second beam body; Step S3, welding the cover beam and the open beam.

[0023] Optionally, it further includes Step S4, welding the cover beam and the second beam body.

[0024] Optionally, between Step S1 and Step S2, it further includes: Step S21, wrapping structural adhesive outside the embedded section. Description of the Drawings

[0025] Figure 1 It is a structural schematic diagram of the first beam body;

[0026] Figure 2 It is a structural schematic diagram of the second beam body;

[0027] Figure 3 It is a structural schematic diagram of the second beam body embedded in the open beam and connected by a straight welding seam;

[0028] Figure 4 It is a structural schematic diagram of the first beam body and the second beam body after being welded together by carbon dioxide shielded welding;

[0029] Figure 5 It is a structural schematic diagram of the open beam configured with a welding groove;

[0030] Figure 6 It is a structural schematic diagram of the first beam body and the second beam body after being welded together by carbon dioxide shielded welding (based on slot welding);

[0031] Figure 7 It is a structural schematic diagram of the cover beam configured with process holes;

[0032] Figure 8 This is a schematic diagram of the structure of the first beam and the second beam after welding using the suspension resistance welding process;

[0033] Figure 9 This is a schematic diagram of the structure of the first beam and the second beam when they are suspended resistance welded through the process hole;

[0034] Figure 10 A schematic diagram of the second beam with structural adhesive.

[0035] Figure 11 This is a schematic diagram of the structure of the first beam and the second beam after welding using a suspended resistance welding process (based on adhesive bonding);

[0036] Figure 12 This is a schematic diagram of the structure after the first beam and the second beam are welded using laser welding technology;

[0037] Figure 13 This is a schematic diagram of another structure after the first beam and the second beam are welded using laser welding technology;

[0038] Figure 14 This is a schematic flowchart illustrating a method for manufacturing a chassis beam provided by the present invention.

[0039] Figure 15 This is another schematic diagram of the manufacturing method of the chassis beam provided by the present invention.

[0040] The annotations in the attached figures are explained as follows:

[0041] 1-First beam body, 11-Open beam, 111-U-shaped beam segment, 111a-Inner cavity, 111b-Side opening,

[0042] 111c - Bottom beam section, 111d - Side beam section, 112 - Wing plate beam section, 113 - Weld groove, 12 - Cover plate beam, 121 - Process hole;

[0043] 2-Second beam body, 21-Embedded section;

[0044] 3-Structural adhesive;

[0045] 4-Welding clamp;

[0046] A - Straight weld, BU type weld, C - Rectangular weld, D - Groove weld, E - Laser weld, F - Weld point. Detailed Implementation

[0047] To enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0048] In embodiments of the present invention, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," "third," and "fourth" may explicitly or implicitly include one or more of that feature.

[0049] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection" and "linking" should be interpreted broadly. For example, "linking" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0050] The directional terms mentioned in the embodiments of the present invention, such as "inner" and "outer", are only for reference to the direction of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention.

[0051] In the description of the embodiments of the present invention, the term "several" refers to a plurality of indeterminate quantities, typically two or more. Furthermore, when "several" is used to indicate the quantity of certain components, it does not indicate a quantitative relationship between these components.

[0052] In the description of embodiments of the present invention, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0053] Example 1

[0054] Please refer to Figures 1-13 , Figure 1 This is a structural schematic diagram of the first beam. Figure 2 This is a structural schematic diagram of the second beam. Figure 3 This is a schematic diagram of the structure after the second beam is embedded in the open beam and connected by a straight weld. Figure 4 This is a schematic diagram of the structure after the first and second beams are welded together using carbon dioxide shielded welding. Figure 5 This is a structural schematic diagram of an open beam with weld grooves. Figure 6This is a schematic diagram of the structure after the first and second beams are welded together using carbon dioxide shielded welding (based on slot welding). Figure 7 This is a structural schematic diagram of a cover beam with process holes. Figure 8 This is a schematic diagram of the structure of the first and second beams after welding using a suspension resistance welding process. Figure 9 This is a schematic diagram of the structure of the first and second beams during suspension resistance welding through the process holes. Figure 10 This is a structural schematic diagram of the second beam with structural adhesive. Figure 11 This is a schematic diagram of the structure of the first and second beams after welding using a suspended resistance welding process (based on adhesive bonding). Figure 12 This is a schematic diagram of the structure after the first and second beams are welded using laser welding. Figure 13 This is a schematic diagram of another structure after the first beam and the second beam are welded using laser welding technology.

[0055] like Figures 1-4 As shown, the present invention provides a frame beam for use in vehicles with a non-load-bearing body, comprising a first beam 1 and a second beam 2.

[0056] The first beam 1 includes an open beam 11. The open beam 11 is an open beam, which can be directly fabricated by stamping or other methods, making it easy to obtain and allowing for more flexible structural design. Specifically, the open beam 11 includes a U-shaped beam segment 111, which has an inner cavity 111a and a side opening 111b, the side opening 111b being connected to the inner cavity 111a. Figure 1 In the orientation and positional relationship shown, the side opening 111b can specifically be the top opening.

[0057] It should be understood that the U-shaped beam segment 111 here refers to a cross-section perpendicular to the axial direction that is approximately U-shaped; it does not require that the cross-section necessarily be a standard U-shape. (Combined with...) Figure 1 As long as the U-shaped beam segment 111 includes a bottom beam 111c and two side beams 111d, the two side beams 111d are arranged opposite each other, and the two side beams 111d are located on the same side of the bottom beam 111c, there is no explicit limitation on the included angle between the side beams 111d and the bottom beam 111c, or the transition method between the side beams 111d and the bottom beam 111c.

[0058] The first beam 1 also includes a cover beam 12, which covers the side opening 111b of the open beam 11. In this way, the first beam 1 will ultimately be a closed beam, which can ensure the structural strength of the first beam 1.

[0059] The second beam 2 is a rectangular beam, and it includes an embedded section 21. The second beam 2 itself is a closed beam, resulting in higher structural strength. The specific length of the embedded section 21 is not limited here; it can be determined through calculations.

[0060] In the assembled state, the insert section 21 is located in the inner cavity 111a of the U-shaped beam section 111. The cover beam 12 can cover the open beam 11 and simultaneously cover the insert section 21. The cover beam 12 and the open beam 11 are welded and fixed. The open beam 11 and the second beam body 2 are welded and fixed to each other, so as to weld the first beam body 1 and the second beam body 2 into one piece.

[0061] Unlike conventional designs, the frame beam in this embodiment of the invention adopts a segmented design, wherein the first beam 1 has relatively weak structural strength, while the second beam 2 has relatively strong structural strength. This allows for easy strength distribution of the frame beam according to the vehicle's load-bearing requirements, which can largely avoid situations of excessive or insufficient load-bearing capacity. Furthermore, it is beneficial for the lightweight design of the frame beam.

[0062] For vehicles with a non-load-bearing body, the rear section requires higher structural strength from the frame beams due to the larger weight of the cargo carried, while the front section, primarily housing the engine and cab, requires relatively lower structural strength from the frame beams. Therefore, the first beam 1 can be placed at the front of the vehicle, and the second beam 2 can be placed at the rear. It should be understood that the "front-rear" direction here specifically refers to the vehicle's length direction (also known as longitudinal direction or driving direction), where the direction relatively closer to the front of the vehicle is "front," and the direction relatively closer to the rear is "rear."

[0063] It should be noted that the embodiments of the present invention do not limit the extension direction of the first beam 1 and the second beam 2, nor the changes in cross-sectional dimensions in their respective extension directions. In practical applications, those skilled in the art can configure them according to specific usage needs, as long as the usage requirements are met.

[0064] For example, both the first beam 1 and the second beam 2 can extend along a straight line, thus making them both straight beams. Alternatively, they can extend along a curve, thus making them both curved beams. The cross-sectional dimensions of the first beam 1 and the second beam 2 can remain unchanged in their respective extension directions, thus making them both constant-section beams. Alternatively, the cross-sectional dimensions of the first beam 1 and the second beam 2 can change, thus making them both variable-section beams. When they are variable-section beams, the specific location of the variable cross-section can be determined according to actual requirements, and is not limited here.

[0065] Please continue to refer to this. Figure 1, in some optional embodiments, the open beam 11 may further include a flange beam segment 112. The flange beam segment 112 may be connected to the side beam portion 111d of the U-shaped beam segment 111, and the flange beam segment 112 may be located at one end of the side beam portion 111d away from the bottom beam portion 111c. The cover plate beam 12 may be specifically welded and fixed to the flange beam segment 112.

[0066] The flange beam segment 112 and the bottom beam portion 111c may be respectively located on both sides of the side beam portion 111d. In this way, the open beam 11 can basically present a "ji" shape, and the welding space between the flange beam segment 112 and the cover plate beam 12 is relatively large, and the welding operation can be relatively easy.

[0067] Alternatively, the flange beam segment 112 and the bottom beam portion 111c may also be respectively located on the same side of the side beam portion 111d. At this time, the structure of the open beam 11 is more compact, the size of the cover plate beam 12 can be relatively small, and the occupied space of the first beam body 1 formed after the cover plate beam 12 and the open beam 11 are welded and fixed can be relatively small.

[0068] In some optional embodiments, the cover plate beam 12 and the second beam body 2 may also be welded and fixed. In this way, the cover plate beam 12 can also be connected to the second beam body 2 as a whole, which can greatly improve the connection reliability between the first beam body 1 and the second beam body 2.

[0069] Here, the embodiments of the present invention do not limit the welding method between the first beam body 1 and the second beam body 2. In practical applications, those skilled in the art can configure it according to specific usage needs as long as it can meet the usage requirements. For ease of understanding, the following embodiments of the present invention will illustrate the welding structure between the first beam body 1 and the second beam body 2 in combination with several welding processes such as carbon dioxide shielded welding, groove welding, suspension resistance welding, and laser welding.

[0070] In the first embodiment, as Figures 1-4 shown, the first beam body 1 and the second beam body 2 can be welded by using the carbon dioxide shielded welding process. This welding process is mature and simple, and has low requirements for welding equipment.

[0071] The specific welding steps can be as follows:

[0072] Step 11, prepare the open beam 11, the cover plate beam 12 and the second beam body 2 with qualified sizes through stamping process, cutting process, etc.;

[0073] Step 12, as Figure 3 shown, the embedded segment 21 can be embedded in the inner cavity 111a, and one end of the embedded segment 21 away from the bottom beam portion 111c can be connected to the first beam body 1 through two straight welds A to complete the positioning and preliminary connection of the open beam 11 and the second beam body 2;

[0074] Step 13, the insert section 21 also has an axial inner end and an axial outer end, still as Figure 3 As shown, the axial inner end of the embedded section 21 can be connected to the first beam 1 through a U-shaped weld B for reinforcement;

[0075] Step 14, as follows Figure 4 As shown, the cover beam 12 can cover the open beam 11, and the connection between the cover beam 12 and the open beam 11 can be completed by several weld points F formed by spot welding. The number of weld points F is determined according to the load-bearing capacity requirements.

[0076] In step 15, the axial outer end of the embedded section 21 can be connected to the first beam 1 via a rectangular weld C for further reinforcement. It should be understood that the rectangular weld C in this step can also be replaced by a U-shaped weld B.

[0077] In this implementation, the rectangular weld C, the straight weld A, and the U-shaped weld B can be connected to form a closed weld, which can greatly improve the connection strength between the first beam 1 and the second beam 2. Of course, the rectangular weld C, the straight weld A, and the U-shaped weld B can also be isolated from each other, which is also possible in practice, as long as the structural strength requirements are met.

[0078] In the second implementation, such as Figure 5 and Figure 6 As shown, the first beam 1 and the second beam 2 can also be welded using carbon dioxide shielded welding and a groove welding process. This welding process has low requirements for welding space, is easy to implement, does not require pre-welding measurements, and is highly efficient. Furthermore, groove welding allows for the selection of the optimal weld groove and plug hole shape and position on the overlapping surface of the steel plates to suit different loads, steel plate thicknesses, and the length of overlap at the structural beam connection. This high process flexibility better meets load-bearing capacity requirements.

[0079] The specific welding steps can be found below:

[0080] Step 21: Prepare the open beam 11, cover beam 12 and second beam body 2 with the required dimensions through stamping, cutting and other processes.

[0081] Step 22: Cut or stamp the open beam 11 formed by stamping to form the required weld groove 113. The number of weld grooves 113 is not limited here.

[0082] Step 23: The insert section 21 can be installed in the inner cavity 111a, and the end of the insert section 21 away from the bottom beam 111c can be connected to the first beam 1 through two straight welds A to complete the positioning and preliminary connection of the open beam 11 and the second beam 2.

[0083] Step 24: The insert section 21 also has an axial inner end and an axial outer end. Both the axial inner end and the axial outer end of the insert section 21 can be connected to the first beam 1 through a U-shaped weld B for reinforcement.

[0084] Step 25: Fill each weld groove 113 with welding liquid to form a grooved weld D. The grooved weld D is used to connect with the second beam 2 to strengthen the connection between the first beam 1 and the second beam 2.

[0085] In step S26, the cover beam 12 can cover the open beam 11, and the connection between the cover beam 12 and the open beam 11 can be completed by several weld points F formed by spot welding. The number of weld points F is determined according to the load-bearing capacity requirements.

[0086] It should be understood that the U-shaped weld B at the outer end of the axial direction in step S24 can also be formed after step S26 is completed. In this case, the U-shaped weld B can also be replaced by a rectangular weld C, as described in step 15 above. The forming order of the groove weld D and the U-shaped weld B is not limited here. That is, the execution order of steps 24 and 25 is not limited. When the groove weld D can meet the strength requirements, the U-shaped weld B at the inner end of the axial direction and the outer end of the embedded section 21 may not exist. That is, it can be strengthened only by the groove weld D. Furthermore, the weld groove 113 may not be fully used. That is, not all of the weld groove 113 may be filled with welding liquid to form the groove weld D.

[0087] In the above embodiments, the shape of the weld groove 113 can be varied. For example, the shape of the weld groove 113 can be U-shaped, Z-shaped, X-shaped, L-shaped, etc.

[0088] The weld groove 113 can be formed by ordinary cutting machine, laser cutting machine, or plasma cutting machine. Alternatively, the weld groove 113 can also be formed by stamping process.

[0089] In the third implementation, such as Figures 7-9 As shown, the first beam 1 and the second beam 2 can also be welded using a suspended resistance welding process. Suspended resistance welding utilizes electric current to locally melt and bond the metal contact surfaces of the clamped welding heads, forming a weld point. This process is mature, low-cost, highly efficient, simple to operate, and easily mechanized. Furthermore, suspended resistance welding produces extremely low levels of metal fumes, no arc radiation, and no toxic gases, posing virtually no occupational health hazards. It is a relatively safe and environmentally friendly welding process that effectively protects the health of welding workers.

[0090] The specific welding steps can be found below:

[0091] Step 31: Prepare the open beam 11, cover beam 12, and second beam body 2 with the required dimensions through stamping, cutting, and other processes. The cover beam 12 may be provided with process holes 121 to facilitate welding operations. Furthermore, the process holes 121 can reduce the weight of the cover beam 12, achieving the goal of lightweight design. The shape and size of the process holes 121 are not limited here and can be determined according to actual usage requirements.

[0092] Step 32: Clean the welding surfaces of the open beam 11, the cover beam 12, and the second beam 2 to remove oil, rust, and other factors that affect electrical conductivity.

[0093] Step 33: Insert the mounting section 21 of the second beam 2 into the open beam 11 and position and clamp it using a clamp (existing equipment, not shown in the figure);

[0094] Step 34: Use a suspended welding machine to perform spot welding along the first direction to weld the bottom beam 111c and the second beam 2. The weld points can be distributed in a straight line.

[0095] Step 35: Use a suspended welding machine to perform spot welding along the second and third directions respectively to weld the side beam 111d and the second beam 2. The weld spots can be distributed in a U-shape. For details, please refer to [link / reference]. Figure 8 ;

[0096] Step 36: Cover the open beam 11 with the cover beam 12 and connect them by spot welding to connect the cover beam 12 and the open beam 11. The number of welds can be determined according to the load-bearing performance requirements.

[0097] Step 37, as follows Figure 8 and Figure 9 As shown, the welding clamp 4 of the suspended welding machine can pass through the process hole 121 and perform spot welding along the fourth direction to connect the second beam 2 and the cover beam 12. The weld points can be distributed in a straight line.

[0098] It should be understood that of the four welding directions—the first, second, third, and fourth directions—welding can be performed only in some directions, depending on actual load-bearing requirements. When welding to the cover beam 12 and the second beam 2 is not required in the fourth direction, the process hole 121 may not be provided.

[0099] In addition, the above description of the solder joint distribution shape is only an exemplary description made in combination with the drawings for the embodiments of the present invention, and cannot constitute a limitation on the implementation scope of the frame girder provided by the present invention. In actual applications, those skilled in the art can also adjust the distribution shape of the solder joints according to specific needs, as long as the requirements for structural strength can be met. Exemplarily, the solder joints between the side beam portion 111d and the second beam body 2 can also be distributed in an "×" shape, a "W" shape, a "return" shape, etc.

[0100] In some optional solutions, the process hole 121 can be configured with a flanging (not shown in the figure), and this flanging can compensate for the strength loss caused by opening the process hole 121. The specific shape and size of the flanging are not limited herein.

[0101] In the fourth embodiment, as Figure 10 and Figure 11 shown, the first beam body 1 and the second beam body 2 can still adopt the hanging resistance welding process for welding and cooperate with structural adhesive for use in the manufacturing process. The structural adhesive is an adhesive with high strength, anti-peeling, and impact resistance. However, compared with welding, its strength is insufficient and it cannot be used alone for structural connections with large loads. In this embodiment, the structural adhesive is used to strengthen the composite beam, reduce the stress concentration phenomenon of the solder joints, absorb certain impacts and vibrations, effectively improve the connection strength and fatigue performance of the structure, and make the connection more stable and reliable.

[0102] The specific welding steps can be referred to as follows:

[0103] Step 41, prepare the open beam 11, the cover plate beam 12, and the second beam body 2 with qualified sizes through stamping process, cutting process, etc.; among them, the cover plate beam 12 can be provided with a process hole 121 for welding operations, and this process hole 121 can also reduce the weight of the cover plate 12 to achieve the purpose of lightweight design; the shape, size, etc. of this process hole 121 are not limited herein and can be determined specifically according to actual usage requirements;

[0104] Step 42, clean the welding surfaces of the open beam 11, the cover plate beam 12, and the second beam body 2 to remove factors such as oil stains and rust that affect the electrical conductivity;

[0105] Step 43, as Figure 10 shown, apply the structural adhesive 3 to the embedding section 21, and the thickness and type of this structural adhesive 3 are not limited herein;

[0106] Step 44, insert the embedding section 21 of the second beam body 2 into the open beam 11 and position and clamp it through a fixture (existing equipment, not shown in the figure);

[0107] Step 45: Use a suspended welding machine to perform spot welding along the first direction to weld the bottom beam 111c and the second beam 2. The weld points can be distributed in a straight line.

[0108] Step 46: Use a suspended welding machine to perform spot welding along the second and third directions respectively to weld the side beam 111d and the second beam 2. The weld spots can be distributed in a U-shape. For details, please refer to [link / reference]. Figure 11 ;

[0109] Step 47: Cover the open beam 11 with the cover beam 12 and connect them by spot welding to connect the cover beam 12 and the open beam 11. The number of welds can be determined according to the load-bearing performance requirements.

[0110] Step 48: The welding clamp 4 of the suspended welding machine can pass through the process hole 121 and perform spot welding along the fourth direction to connect the second beam 2 and the cover beam 12. The weld spots can be distributed in a straight line. When welding the second beam 2 and the cover beam 12 along the fourth direction is not required, the aforementioned process hole 121 may not be present. For example, see [reference needed]. Figure 11 .

[0111] In this embodiment, the relevant limitations regarding the distribution of solder joints and the selection of welding direction can be found in the aforementioned fourth embodiment, and will not be repeated here.

[0112] In the fifth implementation, such as Figure 12 and Figure 13 As shown, the first beam 1 and the second beam 2 can also be welded together using laser welding. Laser welding uses a high-energy-density laser beam as a heat source to melt and bond the surfaces of the workpieces, thus joining them together. This process has minimal thermal deformation of the workpiece, requires minimal space constraints, can join various dissimilar materials, and is easily automated for high-speed welding.

[0113] The specific welding steps are as follows:

[0114] Step 51: Prepare the open beam 11, cover beam 12 and second beam body 2 with the required dimensions through stamping, cutting and other processes.

[0115] Step 52: Insert the embedding section 21 of the second beam 2 into the open beam 11, cover it with the cover beam 12, and then use the tooling fixture (existing equipment, not shown in the figure) for positioning and clamping. The specific clamping method needs to be determined in combination with the structure of the tooling fixture and the welding sequence, etc., and is not explicitly limited here.

[0116] Step 53: Weld along the first direction to complete the connection between the bottom beam 111c and the second beam 2. The laser weld seam E can be "U", "X" or other shapes to ensure the welding strength.

[0117] Step 54: Weld along the second and third directions to complete the connection between the side beam 111d and the second beam 2. The laser weld seam E can be "U", "X" or other shapes to ensure the weld strength.

[0118] Step 55: Weld along the fourth direction to complete the connection between the cover beam 12 and the second beam 2. The laser weld seam E can be "U", "X" or other shapes to ensure the weld strength.

[0119] Step 56: Weld the cover beam 12 and the opening beam 11. The laser weld seam can be in the shape of a straight line.

[0120] The order of steps S33 to S36 is not limited to the description above. In practical applications, those skilled in the art can adjust it according to actual needs, as long as the welding requirements are met. Furthermore, in practical applications, welding may be performed only in some of the four welding directions (first, second, third, and fourth directions), depending on actual load-bearing requirements.

[0121] Furthermore, in this embodiment, the shape of the laser weld seam E is not limited to the above description; other structural shapes can also be used, as long as they meet the requirements of use. For example, the laser weld seam E can also be "W" shaped, etc.

[0122] Example 2

[0123] The present invention also provides a vehicle with a non-load-bearing body, including a frame, the frame including two beams spaced apart in the transverse direction, the two beams being connected by a crossbeam, the beams being the frame beams involved in the various embodiments of Embodiment 2.

[0124] Since the frame beam in Embodiment 2 already possesses the above-mentioned technical effects, vehicles equipped with this frame beam should also possess similar technical effects, so it will not be elaborated upon here.

[0125] Example 3

[0126] Please refer to Figure 14 and Figure 15 , Figure 14 This is a schematic flowchart of a method for manufacturing a vehicle frame beam provided by the present invention. Figure 15 This is another schematic diagram of the manufacturing method of the chassis beam provided by the present invention.

[0127] like Figure 14As shown, the present invention also provides a method for preparing a vehicle frame beam, applicable to the preparation of vehicle frame beams involved in various embodiments of Example 1. The preparation method includes: step S1, configuring an open beam 11, a cover beam 12, and a second beam body 2; step S2, welding the open beam 11 and the second beam body 2; step S3, welding the cover beam 12 and the open beam 11. The specific welding process and welding steps can be found in Example 1, and will not be described in detail here.

[0128] In some optional embodiments, step S4 may also be included, which involves welding the cover beam 12 and the second beam 2 to further enhance the weld strength. The execution order of steps S4, S2, and S3 is not limited here.

[0129] In some optional embodiments, step S21 is further included between steps S1 and S2: wrapping structural adhesive 3 around the embedded section 21 to connect the first beam 1 and the second beam 2. The structural adhesive 3 can reduce stress concentration at the weld joint, absorb a certain amount of impact and vibration, and effectively improve the connection strength and fatigue performance of the structure, making the connection more stable and reliable.

[0130] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A frame beam, used in vehicles employing a non-load-bearing body, characterized in that, The structure includes a first beam (1) and a second beam (2). The first beam (1) includes an open beam (11) and a cover beam (12). The open beam (11) includes a U-shaped beam segment (111) with an inner cavity (111a) and a side opening (111b). The side opening (111b) and the inner cavity (111a) are connected. The second beam (2) is a rectangular beam and includes an insert segment (21) located in the inner cavity (111a) of the U-shaped beam segment (111). The cover beam (12) covers the side opening (111b). The cover beam (12) and the open beam (11) are welded together. The open beam (11) and the second beam (2) are welded together. The first beam (1) and the second beam (2) are welded together using carbon dioxide shielded welding. The U-shaped beam segment (111) includes a bottom beam (111c) and two oppositely arranged side beams (111d). The end of the embedded segment (21) away from the bottom beam (111c) is connected to the first beam (1) through two straight welds (A). The embedded segment (21) also has an axial inner end and an axial outer end. The axial inner end is connected to the first beam (1) through a U-shaped weld (B), and the axial outer end is connected to the first beam (1) through a rectangular weld (C).

2. The frame beam according to claim 1, characterized in that, The open beam (11) also includes a flange beam segment (112). The U-shaped beam segment (111) includes a bottom beam portion (111c) and two oppositely arranged side beam portions (111d). The flange beam segment (112) is connected to the side beam portions (111d) and is located at the end of the side beam portion (111d) away from the bottom beam portion (111c). The cover beam (12) and the flange beam segment (112) are welded and fixed.

3. The frame beam according to claim 2, characterized in that, The wing beam segment (112) and the bottom beam portion (111c) are located on both sides of the side beam portion (111d).

4. The frame beam according to claim 1, characterized in that, The cover beam (12) is also welded and fixed to the second beam (2).

5. The frame beam according to any one of claims 1-4, characterized in that, The open beam (11) is also provided with at least one weld groove (113), in which a groove weld (D) is formed, which is used to connect with the second beam body (2).

6. A vehicle employing a non-load-bearing body, comprising a frame, said frame including two beams spaced apart laterally, characterized in that, The main beam is the frame main beam as described in any one of claims 1-5.

7. A method for manufacturing a vehicle frame beam, characterized in that, The method applicable to the fabrication of the frame beam according to any one of claims 1-5, the fabrication method comprising: Step S1: Configure the opening beam (11), the cover beam (12), and the second beam body (2). Step S2: Weld the open beam (11) and the second beam body (2). Step S3: Weld the cover beam (12) and the opening beam (11).

8. The method for manufacturing the frame beam according to claim 7, characterized in that, It also includes step S4, welding the cover beam (12) and the second beam (2).

9. The method for manufacturing the frame beam according to claim 7 or 8, characterized in that, Between step S1 and step S2, the following is also included: Step S21, wrap the structural adhesive (3) around the embedded section (21).

Images