CN115805995A - Vehicle adopting non-bearing type vehicle body, frame girder and preparation method thereof - Google Patents

Abstract

The invention discloses a vehicle adopting a non-bearing type vehicle body, a frame girder and a preparation method thereof, wherein the frame girder is applied to the vehicle adopting the non-bearing type vehicle body; including the first roof beam body and the second roof beam body, the first roof beam body includes opening roof beam and apron roof beam, the opening roof beam includes U type roof beam section, U type roof beam section has inner chamber and lateral part opening, the lateral part opening with the inner chamber is linked together, the second roof beam body is the rectangle roof beam, the second roof beam body is including inlaying the dress section, it is located to inlay the dress section U type roof beam section in the inner chamber, the apron roof beam cover in the lateral part opening, the apron roof beam with opening roof beam welded fastening, the opening roof beam with second roof beam body welded fastening. The frame girder adopts a sectional type design, so that the strength of the frame girder can be conveniently distributed according to the bearing requirements of the vehicle, and the situation of excessive or insufficient bearing capacity can be avoided to a greater extent.

Description

Vehicle adopting non-bearing type vehicle body, frame girder and preparation method thereof

Technical Field

The invention relates to the technical field of vehicles, in particular to a vehicle adopting a non-bearing type vehicle body, a frame girder and a preparation method thereof.

Background

The vehicle body is divided into a load-bearing vehicle body and a non-load-bearing vehicle body, the frame of the load-bearing vehicle body does not have two independent frame girders, and the frame of the non-load-bearing vehicle body has two independent frame girders. In general, most passenger cars, buses, and the like employ a body of a load-bearing type, while trucks, off-road vehicles, sport Utility Vehicles (SUVs), and the like employ a body of a substantially non-load-bearing type.

At present, for vehicles adopting non-bearing type vehicle bodies, frame girders of the vehicles are basically all integral rectangular beams or U-shaped beams and the like, and the structural forms of the front parts and the rear parts of the frame girders are completely consistent, so that the situation of excessive or insufficient bearing capacity of local areas is easily caused, and the reasonable structural design of the frame girders is not facilitated.

Therefore, how to provide a solution to overcome or alleviate the above drawbacks remains a technical problem to be solved by those skilled in the art.

Disclosure of Invention

The invention aims to provide a vehicle adopting a non-bearing type vehicle body, a frame girder and a preparation method thereof, wherein the frame girder adopts a sectional type design, can conveniently distribute the strength of the frame girder according to the bearing requirement of the vehicle, and can greatly avoid the situation of excess or insufficient bearing capacity.

In order to solve the technical problem, the invention provides a frame girder which is applied to a vehicle adopting a non-bearing type vehicle body; including the first roof beam body and the second roof beam body, the first roof beam body includes opening roof beam and apron roof beam, the opening roof beam includes U type beam section, U type beam section has inner chamber and lateral part opening, the lateral part opening with the inner chamber is linked together, the second roof beam body is the rectangle roof beam, the second roof beam body is including inlaying the dress section, it is located to inlay the dress section U type beam section in the inner chamber, the apron roof beam cover in the lateral part opening, the apron roof beam with opening roof beam welded fastening, the opening roof beam with second roof beam body welded fastening.

In the scheme, the frame girder adopts a sectional design, the first beam body comprises an open beam, the open beam is an open beam, the open beam can be directly prepared in a stamping mode and the like, the acquisition is convenient, and the structural design is more flexible. Meanwhile, the first beam body further comprises a cover plate beam, and the cover plate beam can cover the side opening of the opening beam, so that the first beam body is finally presented as a closed beam, and the structural strength of the first beam body can be ensured. And, the second roof beam body is the rectangle roof beam, and the second roof beam body itself is the beam that closes the mouth, and structural strength is higher.

After the assembly is completed, the frame girder has relatively low structural strength at the first beam body part and relatively high structural strength at the second beam body part, so that the frame girder can be conveniently subjected to strength distribution according to the bearing requirements of vehicles, the situation that the bearing capacity is excessive or insufficient can be avoided to a greater extent, and the lightweight design of the frame girder is facilitated.

Optionally, the split beam further includes a wing plate beam section, the U-shaped beam section includes a base beam portion and two side beam portions that are arranged oppositely, the wing plate beam section is connected to the side beam portions and located at one end of the side beam portions away from the base beam portion, and the cover plate beam is welded and fixed to the wing plate beam section.

Optionally, the spar beam sections and the bottom beam portions are located on either side of the side beam portions.

Optionally, the cover plate beam is further welded and fixed with the second beam body.

Optionally, the first beam body and the second beam body are welded by a carbon dioxide arc welding process.

Optionally, the U-shaped beam section includes a bottom beam portion and two side beam portions arranged oppositely, and one end of the embedded section, which is far away from the bottom beam portion, is connected to the first beam body through two linear weld joints; the embedded section is also provided with an axial inner end part and an axial outer end part, the axial inner end part is connected with the first beam body through a U-shaped welding seam, and the axial outer end part is connected with the first beam body through a rectangular welding seam.

Optionally, the split beam is further provided with at least one weld groove, and a groove weld is formed in the weld groove and used for connecting with the second beam body.

Optionally, the first beam body and the second beam body are welded by a suspension resistance welding process, and the cover plate beam is provided with a fabrication hole.

Optionally, the cover plate beam is configured with a flange at an inner hole wall of the fabrication hole.

Optionally, the first beam body and the second beam body are welded by a suspension resistance welding process, and the embedded section is externally sleeved with structural adhesive.

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

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 "x" shape or a "mouth" shape.

The invention also provides a vehicle adopting the non-bearing type vehicle body, which comprises a frame, wherein the frame comprises two cross beams which are arranged at intervals in the transverse direction, and the cross beams are the frame cross beams.

Since the frame member has the above technical effects, the vehicle having the frame member also has similar technical effects, and thus the detailed description thereof is omitted.

The invention also provides a preparation method of the frame girder, which is suitable for the preparation of the frame girder, and the preparation method comprises the following steps: s1, configuring the opening beam, the cover plate beam and the second beam body; s2, welding the opening beam and the second beam body; and S3, welding the cover plate beam and the opening beam.

Optionally, step S4 is further included, welding the cover plate beam and the second beam body.

Optionally, between the step S1 and the step S2, further comprising: and S21, wrapping structural adhesive outside the embedding section.

Drawings

FIG. 1 is a schematic structural view of a first beam;

FIG. 2 is a schematic structural view of a second beam;

FIG. 3 is a schematic structural view of a second beam body after being embedded in an open beam and connected by a straight weld;

FIG. 4 is a schematic structural view of the first beam and the second beam after welding by carbon dioxide arc welding;

FIG. 5 is a schematic view of a split beam configured with weld grooves;

FIG. 6 is a schematic structural view of the first beam and the second beam after welding (based on groove welding) using carbon dioxide arc welding;

FIG. 7 is a schematic structural view of a decking beam configured with tooling holes;

FIG. 8 is a schematic structural view of the first beam and the second beam after being welded by a suspension resistance welding process;

FIG. 9 is a schematic structural view of the first beam and the second beam during suspension resistance welding through the tooling holes;

FIG. 10 is a schematic structural view of a second beam configured with structural adhesive;

FIG. 11 is a schematic structural view of a first beam and a second beam after welding (based on adhesive bonding) using a suspension resistance welding process;

FIG. 12 is a schematic view of the first beam and the second beam after being welded using a laser welding process;

FIG. 13 is another schematic structural view of the first beam and the second beam after being welded using a laser welding process;

FIG. 14 is a schematic flow chart illustrating a method of manufacturing a frame rail according to the present invention;

fig. 15 is another schematic flow chart of a method for manufacturing a frame member according to the present invention.

The reference numerals are explained below:

1-first beam body, 11-opening beam, 111-U-shaped beam section, 111 a-inner cavity, 111 b-side opening,

111 c-bottom beam portion, 111 d-side beam portion, 112-wing plate beam section, 113-welding groove, 12-cover plate beam and 121-fabrication hole;

2-a second beam body, 21-an embedding section;

3-structural adhesive;

4-soldering pliers;

a-straight weld, B-U-shaped weld, C-rectangular weld, D-groove weld, E-laser weld, and F-weld.

Detailed Description

In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

In the embodiments of the present invention, the terms "first", "second", "third", and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first", "second", "third", "fourth" may explicitly or implicitly include one or more of the features.

In the description of the embodiments of the present invention, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly and mean that, for example, "connected" may or may not be detachably connected; may be directly connected or indirectly connected through an intermediate.

Directional phrases used in embodiments of the present invention, such as, for example, "inner", "outer", etc., are used in the orientation only referring to the attached drawings and thus, the directional phrases are used in order to better and more clearly describe and understand the embodiments of the present invention and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation and therefore should not be taken as limiting the embodiments of the present invention.

In the description of embodiments of the present invention, the term "plurality" refers to an indefinite number of the plurality, usually two or more. Further, when the number of some components is indicated by "several", the interrelationship of the components in number is not indicated.

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

Example one

Referring to fig. 1 to 13, fig. 1 is a schematic structural view of a first beam body, fig. 2 is a schematic structural view of a second beam body, fig. 3 is a schematic structural view of the second beam body after being embedded in an open beam and connected by a straight weld, fig. 4 is a schematic structural view of the first beam body and the second beam body after being welded by carbon dioxide arc welding, fig. 5 is a schematic structural view of the open beam provided with a weld groove, fig. 6 is a schematic structural view of the first beam body and the second beam body after being welded by carbon dioxide arc welding (based on groove welding), fig. 7 is a schematic structural view of a cover plate beam provided with a fabrication hole, fig. 8 is a schematic structural view of the first beam body and the second beam body after being welded by a suspension welding process, fig. 9 is a schematic structural view of the first beam body and the second beam body during resistance welding through the fabrication hole, fig. 10 is a schematic structural view of the second beam body provided with a fabrication glue, fig. 11 is a schematic structural view of the first beam body and the second beam body after being welded by a suspension welding process (based on resistance welding), and fig. 12 is a schematic structural view of the first beam body and the second beam body after laser welding process.

As shown in fig. 1 to 4, the present invention provides a frame member for a vehicle using a non-load-bearing vehicle body, which includes a first beam body 1 and a second beam body 2.

First roof beam body 1 includes open beam 11, and open beam 11 is uncovered roof beam, and open beam 11 is direct can be with preparation through modes such as punching press, acquires the convenience, and structural design is also more nimble. Specifically, the open beam 11 includes a U-shaped beam section 111, the U-shaped beam section 111 has an inner cavity 111a and a side opening 111b, and the side opening 111b communicates with the inner cavity 111 a; in the orientation and positional relationship shown in fig. 1, the side opening 111b may specifically be an upper opening.

It should be understood that the U-shaped beam section 111 herein means that the cross section perpendicular to the axial direction is substantially U-shaped, and does not require that the cross section necessarily exhibit a standard U-shape. With reference to fig. 1, the U-shaped beam section 111 includes a bottom beam portion 111c and two side beam portions 111d, the two side beam portions 111d are disposed opposite to each other, and the two side beam portions 111d are both located on the same side of the bottom beam portion 111c, but the included angle between the side beam portion 111d and the bottom beam portion 111c, the transition manner between the side beam portion 111d and the bottom beam portion 111c, and the like are not specifically limited.

The first beam body 1 further includes a cover beam 12, and the cover beam 12 covers the side opening 111b of the opening beam 11. In this way, the first beam body 1 will eventually also assume a closed beam, enabling the structural strength of the first beam body 1 to be ensured.

The second beam body 2 is a rectangular beam, and the second beam body 2 comprises an embedded section 21. The second beam body 2 is a closed beam, and the structural strength is higher. The specific length of the segment 21 is not limited herein, and may be determined by a specific calculation or the like.

In an assembled state, the embedded section 21 is located in the inner cavity 111a of the U-shaped beam section 111, the cover beam 12 can cover the opening beam 11 and simultaneously cover the embedded section 21, the cover beam 12 and the opening beam 11 are welded and fixed, and the opening beam 11 and the second beam body 2 are welded and fixed, so that the first beam body 1 and the second beam body 2 are welded into a whole.

Different from the conventional design, the frame girder in the embodiment of the invention adopts a sectional design, wherein the structural strength of the first beam body 1 is relatively weak, the structural strength of the second beam body 2 is relatively strong, the frame girder can be conveniently subjected to strength distribution according to the bearing requirements of vehicles, the situation of excessive or insufficient bearing capacity can be avoided to a great extent, and the light-weight design of the frame girder is facilitated.

In the case of a vehicle having a non-self-supporting body, since the rear portion thereof has a large mass for loading cargo and the frame member requires a relatively high structural strength, and the front portion thereof, mainly the engine, the cab, and the like, has a relatively low structural strength, the first beam body 1 can be disposed at the front portion of the vehicle and the second beam body 2 can be disposed at the rear portion of the vehicle. It should be understood that the front-back direction herein specifically refers to a longitudinal direction (also referred to as a longitudinal direction or a traveling direction, etc.) of the vehicle, wherein a direction relatively close to the vehicle head is a front direction and a direction relatively close to the vehicle tail is a rear direction.

It should be noted that, in the embodiment of the present invention, the extension directions of the first beam body 1 and the second beam body 2 and the cross-sectional dimension changes in the extension directions are not limited, and in practical applications, a person skilled in the art may configure the first beam body and the second beam body according to specific use requirements as long as the requirements can meet the use requirements.

For example, the first beam 1 and the second beam 2 may both extend along a straight line, such that the first beam 1 and the second beam 2 are both straight beams, or the first beam 1 and the second beam 2 may also extend along a curved line, such that the first beam 1 and the second beam 2 are curved beams; the cross-sectional dimensions of the first beam body 1 and the second beam body 2 may not be changed in the respective extending directions, so that both the first beam body 1 and the second beam body 2 may be constant cross-sectional beams, or the cross-sectional dimensions of the first beam body 1 and the second beam body 2 may be changed, so that both the first beam body 1 and the second beam body 2 may be variable cross-sectional beams, and in the case of the variable cross-sectional beams, specific variable cross-sectional positions and the like may be determined by referring to actual requirements and the like, which is not limited herein.

With continued reference to fig. 1, in some alternative embodiments, the opening beam 11 may further include a wing beam section 112, the wing beam section 112 may be connected to the side beam portion 111d of the U-shaped beam section 111, the wing beam section 112 may be located at an end of the side beam portion 111d away from the bottom beam portion 111c, and the cover beam 12 may be welded to the wing beam section 112.

The panel beam section 112 and the sill portion 111c may be respectively located on both sides of the side sill portion 111d, so that the opening beam 11 may substantially assume a "zigzag" shape, the welding space between the panel beam section 112 and the cover beam 12 is large, and the welding operation can be relatively easy.

Alternatively, the wing beam section 112 and the bottom beam portion 111c may be located on the same side of the side beam portion 111d, in which case, the structure of the split beam 11 may be more compact, the size of the cover beam 12 may be relatively smaller, and the space occupied by the first beam body 1 formed by welding and fixing the cover beam 12 and the split beam 11 may be relatively smaller.

In some alternative embodiments, the cover plate beam 12 and the second beam body 2 may also be fixed by welding, so that the cover plate beam 12 may also be connected with the second beam body 2 as a whole, and the connection reliability between the first beam body 1 and the second beam body 2 can be improved to a greater extent.

Here, the embodiment of the present invention is not limited to the welding manner between the first beam 1 and the second beam 2, and in practical applications, a person skilled in the art may configure the welding manner according to specific use requirements as long as the welding manner can meet the use requirements. For the convenience of understanding, the following embodiments of the present invention will describe a welding structure between the first beam body 1 and the second beam body 2 in connection with several welding processes such as carbon dioxide arc welding, slot welding, suspension resistance welding, laser welding, etc.

In a first embodiment, as shown in fig. 1-4, the first beam 1 and the second beam 2 can be welded by a carbon dioxide arc welding process, which is mature and simple and has low requirements on welding equipment.

Specific welding procedures can be referred to as follows:

step 11, preparing the opening beam 11, the cover plate beam 12 and the second beam body 2 with the sizes meeting the requirements through a stamping process, a cutting process and the like;

step 12, as shown in fig. 3, the embedding section 21 can be embedded in the inner cavity 111a, and one end of the embedding section 21, which is far away from the bottom beam part 111c, can be connected with the first beam body 1 through two linear welding seams a, so as to complete the positioning and the primary connection of the opening beam 11 and the second beam body 2;

step 13, the embedded section 21 further has an axial inner end portion and an axial outer end portion, and as shown in fig. 3, the axial inner end portion of the embedded section 21 can be connected with the first beam body 1 through a U-shaped welding seam B for reinforcement;

step 14, as shown in fig. 4, the cover plate beam 12 may cover the opening beam 11, and the connection between the cover plate beam 12 and the opening beam 11 may be completed through a plurality of welding points F formed by spot welding, where the number of the welding points F is determined according to the requirement of the bearing capacity;

the axially outer end of the insert section 21 may be connected to the first beam 1 by a rectangular weld C for further reinforcement, step 15. It should be understood that the rectangular weld C in this step may also be replaced with a U-shaped weld B.

In this embodiment, the rectangular weld C, the linear weld a and the U-shaped weld B may be connected to form a closed weld, which can improve the connection strength of the first beam 1 and the second beam 2 to a greater extent. Of course, the rectangular weld C, the linear weld a and the U-shaped weld B may also be isolated from each other, which is also applicable in specific practice, as long as the requirements of structural strength are met.

In the second embodiment, as shown in fig. 5 and 6, the first beam 1 and the second beam 2 may be welded by a carbon dioxide arc welding process based on a groove welding method. The welding process has low requirement on welding space, is easy to realize, does not need to measure the size before welding, and has high efficiency. In addition, the groove welding can select the optimal shapes of the welding groove and the plug welding hole on the overlapped surface of the steel plate and the positions of the welding groove and the plug welding hole according to the overlapped length of the joints of the steel plate and the structural beam which are subjected to different loads and different thicknesses, the process flexibility is high, and the bearing capacity requirement can be better met.

Specific welding procedures can be referred to as follows:

step 21, preparing the opening beam 11, the cover plate beam 12 and the second beam body 2 with the sizes meeting the requirements through a stamping process, a cutting process and the like;

step 22, cutting or punching the punched opening beam 11 to form a required welding groove 113, wherein the number of the welding grooves 113 is not limited herein;

step 23, the embedding section 21 can be embedded in the inner cavity 111a, and one end of the embedding section 21, which is far away from the bottom beam part 111c, can be connected with the first beam body 1 through two linear welding seams a, so as to complete the positioning and the primary connection of the opening beam 11 and the second beam body 2;

step 24, the embedded section 21 is also provided with an axial inner end part and an axial outer end part, and the axial inner end part and the axial outer end part of the embedded section 21 can be connected with the first beam body 1 through a U-shaped welding seam B for reinforcement;

step 25, filling welding liquid in each welding groove 113 to form a groove welding seam D, wherein the groove welding seam D is used for being connected with the second beam body 2 so as to connect and reinforce the first beam body 1 and the second beam body 2;

step S26, the cover beam 12 may cover the opening beam 11, and the connection between the cover beam 12 and the opening beam 11 may be completed through a plurality of welding points F formed by spot welding, where the number of the welding points F is determined according to the requirement of the bearing capacity.

It should be understood that the U-shaped weld B at the axial outer end in step S24 may also be formed after step S26 is completed, and in this case, the U-shaped weld B may also be replaced by a rectangular weld C, see step 15; the order of forming the groove weld D and the U-shaped weld B is not limited herein, that is, the order of performing the steps 24 and 25 may not be limited; when the groove weld D already satisfies the strength requirement, the U-shaped weld B of the axially inner end and the axially outer end of the insert section 21 may also be absent, that is, may be reinforced only by the groove weld D; also, the weld grooves 113 may not be fully used, that is, not all of the weld grooves 113 may be filled with the welding liquid to form the groove weld D.

In the above embodiments, the shape of the solder groove 113 may be various, and for example, the shape of the solder groove 113 may be any of U-shape, Z-shape, X-shape, L-shape, and the like.

The weld groove 113 may be formed by cutting with a general cutter, may be formed by cutting with a laser cutter, or may be formed by cutting with a plasma cutter. Alternatively, the weld recesses 113 may also be formed by a stamping process.

In the third embodiment, as shown in fig. 7 to 9, the first beam body 1 and the second beam body 2 may be welded by using a suspension resistance welding process. The suspension type resistance welding utilizes current to locally melt and combine metal contact surfaces clamped by welding heads to form welding spots, and the process is mature, low in cost, high in production efficiency, simple to operate and easy to realize mechanical production. In addition, the suspended resistance welding process has the advantages of extremely low metal smoke, no arc light radiation, no toxic gas and the like, almost no occupational disease hazard factors, safety and environmental protection, and capability of effectively protecting the health of welding operators.

Specific welding procedures can be referred to as follows:

step 31, preparing the opening beam 11, the cover plate beam 12 and the second beam body 2 with the required sizes through a stamping process, a cutting process and the like; the cover plate beam 12 may be provided with a fabrication hole 121 for performing a welding operation, and the fabrication hole 121 may also reduce the weight of the cover plate 12 to achieve the design purpose of light weight; the shape, size, etc. of the fabrication hole 121 are not limited herein, and may be determined according to actual use requirements;

step 32, cleaning the welding surfaces of the opening beam 11, the cover plate beam 12 and the second beam body 2, and removing factors affecting the electrical conductivity, such as oil stains, rust stains and the like;

step 33, inserting the embedding section 21 of the second beam body 2 into the opening beam 11, and positioning and clamping the embedding section by a clamp (existing equipment, not shown in the figure);

step 34, performing spot welding along the first direction by using a suspension welding machine to weld the bottom beam part 111c and the second beam body 2, wherein welding spots can be distributed in a straight line shape;

step 35, performing spot welding along the second direction and the third direction by using a suspension welding machine to weld the side beam part 111d and the second beam body 2, wherein welding spots can be distributed in a square shape, and specifically, see fig. 8;

step 36, covering the cover plate beam 12 on the opening beam 11, and connecting the cover plate beam 12 and the opening beam 11 by spot welding, wherein the number of welding spots can be determined according to the requirement of bearing performance;

step 37, as shown in fig. 8 and 9, the welding tongs 4 of the suspension welding machine can pass through the fabrication holes 121 and perform spot welding in the fourth direction to connect the second beam body 2 and the cover plate beam 12, and the welding points can be distributed in a straight line.

It should be understood that, among the four welding directions of the first direction, the second direction, the third direction and the fourth direction, welding may be performed only in a partial direction, and the determination needs to be made in combination with actual bearing requirements and the like. When it is not necessary to weld the cover plate beam 12 and the second beam body 2 in the fourth direction, the tooling holes 121 may not be provided.

In addition, the above description of the distribution shape of the welding points is only an exemplary description made by the embodiment of the present invention in combination with the drawings, and does not limit the implementation range of the frame member provided by the present invention, and in practical applications, a person skilled in the art may adjust the distribution property of the welding points according to specific needs as long as the requirement of the structural strength can be satisfied. Illustratively, the welding point between the side beam portion 111d and the second beam body 2 may be arranged in an "x" pattern, a "W" pattern, a "return" pattern, or the like.

In some alternatives, the tooling holes 121 may be configured with a flange (not shown) that compensates for the strength loss caused by the opening of the tooling holes 121. The specific shape and size of the cuff is not limited herein.

In the fourth embodiment, as shown in fig. 10 and 11, the first beam 1 and the second beam 2 can still be welded by using a suspension resistance welding process, and can be used in combination with a structural adhesive. The structural adhesive is an adhesive with high specific strength, peeling resistance and impact resistance, but compared with welding, the structural adhesive is not enough in strength and cannot be independently used for bearing structural connection with large load.

Specific welding procedures can be referred to as follows:

step 41, preparing the opening beam 11, the cover plate beam 12 and the second beam body 2 with the sizes meeting the requirements through a stamping process, a cutting process and the like; the cover plate beam 12 may be provided with a fabrication hole 121 for performing a welding operation, and the fabrication hole 121 may also reduce the weight of the cover plate 12 to achieve the design purpose of light weight; the shape, size, etc. of the fabrication hole 121 are not limited herein, and may be determined according to actual use requirements;

step 42, cleaning the welding surfaces of the opening beam 11, the cover plate beam 12 and the second beam body 2, and removing oil stains, rust stains and other factors affecting the electrical conductivity; a

Step 43, as shown in fig. 10, coating the embedding section 21 with the structural adhesive 3, wherein the thickness, the type and the like of the structural adhesive 3 are not limited herein;

step 44, inserting the embedding section 21 of the second beam body 2 into the opening beam 11, and positioning and clamping the embedding section by a clamp (existing equipment, not shown in the figure);

step 45, performing spot welding along the first direction by using a suspension welding machine to weld the bottom beam part 111c and the second beam body 2, wherein welding spots can be distributed in a straight line shape;

step 46, performing spot welding along the second direction and the third direction by using a suspension welding machine to weld the side beam part 111d and the second beam body 2, wherein welding spots can be distributed in a square shape, and specifically, refer to fig. 11;

step 47, covering the cover plate beam 12 on the opening beam 11, and connecting the cover plate beam 12 and the opening beam 11 by spot welding, wherein the number of welding spots can be determined according to the requirement of bearing performance;

and 48, enabling the welding tongs 4 of the suspension welding machine to penetrate through the process holes 121 and perform spot welding along the fourth direction so as to connect the second beam body 2 and the cover plate beam 12, wherein welding points can be distributed in a straight line shape. The above-mentioned tooling holes 121 may also be absent when it is not necessary to weld the second beam body 2 and the lid beam 12 in the fourth direction, as can be seen for example in fig. 11.

In the present embodiment, regarding limitations related to the distribution of the welding spots, the selection of the welding direction, and the like, reference may be made to the fourth embodiment, and a repetitive description will not be made here.

In the fifth embodiment, as shown in fig. 12 and 13, the first beam body 1 and the second beam body 2 may be welded by a laser welding process. The laser welding uses high energy density laser beam as heat source to melt and combine the workpiece surface to connect the workpieces, the process has small heat conduction deformation to the workpieces, the operation space restriction requirement is small, various heterogeneous materials can be mutually jointed, and the automatic high-speed welding is easy to realize.

The specific welding procedure is as follows:

step 51, preparing the opening beam 11, the cover plate beam 12 and the second beam body 2 with the required sizes through a stamping process, a cutting process and the like;

step 52, inserting the embedding section 21 of the second beam body 2 into the opening beam 11, covering the cover plate beam 12, and then positioning and clamping by using a tooling fixture (existing equipment, not shown in the figure), wherein a specific clamping mode needs to be determined by combining the structure of the tooling fixture, the welding sequence and the like, and is not specifically limited herein;

step 53, welding along the first direction to complete the connection between the bottom beam part 111c and the second beam body 2, wherein the laser welding seam E may be a "mouth" type, an "x" type or other shapes for ensuring the welding strength;

step 54, welding along the second direction and the third direction to complete the connection between the side beam portion 111d and the second beam body 2, wherein the laser welding seam E may be a "mouth" type, an "x" type or other shapes for ensuring the welding strength;

step 55, welding along the fourth direction to complete the connection between the cover plate beam 12 and the second beam body 2, wherein the laser welding seam E can be a "mouth" type, an "x" type or other shapes for ensuring the welding strength;

and 56, welding the cover plate beam 12 and the opening beam 11, wherein the laser welding seam can be in a straight shape.

The sequence of the steps S33 to S36 is not limited to the above description, and in practical applications, those skilled in the art may adjust the sequence according to actual needs as long as the requirement of soldering can be met. In addition, in practical applications, welding may be performed only in a part of the four welding directions of the first direction, the second direction, the third direction and the fourth direction, and the determination needs to be specifically made in combination with actual bearing requirements and the like.

In the present embodiment, the shape of the laser weld bead E is not limited to the above description, and other structural shapes may be adopted as long as they can meet the requirements of use. Illustratively, the laser weld seam E may also be "W" shaped, etc.

Example two

The invention also provides a vehicle adopting the non-bearing type vehicle body, which comprises a frame, wherein the frame comprises two cross beams which are arranged at intervals in the transverse direction, the two cross beams can be connected through cross beams, and the cross beams are the frame cross beams related to the second embodiment.

Since the frame member in the second embodiment has the above technical effects, the vehicle having the frame member also has similar technical effects, and therefore, the detailed description thereof is omitted here.

EXAMPLE III

Referring to fig. 14 and 15, fig. 14 is a schematic flow chart of a method for manufacturing a frame member according to the present invention, and fig. 15 is a schematic flow chart of the method for manufacturing a frame member according to the present invention.

As shown in fig. 14, the present invention further provides a method for manufacturing a frame member, which is applied to manufacture the frame member according to the first embodiment of the present invention, the method including: s1, configuring an opening beam 11, a cover plate beam 12 and a second beam body 2; s2, welding the opening beam 11 and the second beam body 2; step S3, welding the cover plate beam 12 and the opening beam 11, and the specific welding process and welding step can be referred to in the first embodiment, which is not described in detail herein.

In some optional embodiments, a step S4 of welding the cover plate beam 12 and the second beam body 2 may be further included to further improve the welding strength. The execution sequence of step S4, step S2 and step S3 is not limited herein.

In some optional embodiments, between step S1 and step S2, further comprising: step S21, wrapping the structural adhesive 3 outside the embedding section 21 so as to match the structural adhesive 3 to connect the first beam body 1 and the second beam body 2. The structural adhesive 3 can reduce stress concentration of welding spots, can absorb certain impact and vibration, can effectively improve the connection strength and fatigue performance of the structure, and enables connection to be more stable and reliable.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.

Claims (16)

1. The utility model provides a frame girder, is applied to the vehicle that adopts non-formula automobile body that bears, characterized in that, including first roof beam body (1) and second roof beam body (2), first roof beam body (1) is including opening roof beam (11) and apron roof beam (12), opening roof beam (11) are including U type roof beam section (111), U type roof beam section (111) have inner chamber (111 a) and lateral part opening (111 b), lateral part opening (111 b) with inner chamber (111 a) are linked together, second roof beam body (2) are the rectangle roof beam, second roof beam body (2) are including inlaying dress section (21), it is located to inlay dress section (21) U type roof beam section (111) in inner chamber (111 a), apron roof beam (12) cover in lateral part opening (111 b), apron roof beam (12) with opening roof beam (11) welded fastening, opening roof beam (11) with second roof beam body (2) welded fastening.

2. The vehicle frame member according to claim 1, wherein the opening beam (11) further comprises a wing plate beam section (112), the U-shaped beam section (111) comprises a base beam portion (111 c) and two oppositely arranged side beam portions (111 d), the wing plate beam section (112) is connected with the side beam portions (111 d) and is located at one end of the side beam portions (111 d) far away from the base beam portion (111 c), and the cover plate beam (12) and the wing plate beam section (112) are welded and fixed.

3. The frame rail of claim 2, wherein the panel beam section (112) and the sill portion (111 c) are located on either side of the side beam portion (111 d).

4. A vehicle frame according to claim 1, characterized in that said cover plate beam (12) is also welded to said second beam body (2).

5. A frame rail according to any of claims 1-4, characterised in that the first beam (1) and the second beam (2) are welded together by a carbon dioxide arc welding process.

6. A vehicle frame girder according to claim 5, characterized in that the U-shaped beam section (111) comprises a base beam part (111 c) and two oppositely arranged side beam parts (111 d), and one end of the embedded section (21) far away from the base beam part (111 c) is connected with the first beam body (1) through two straight welding seams (A);

the embedded section (21) is also provided with an axial inner end part and an axial outer end part, the axial inner end part is connected with the first beam body (1) through a U-shaped welding seam (B), and the axial outer end part is connected with the first beam body (1) through a rectangular welding seam (C).

7. A frame girder according to claim 5, characterized in that the split beam (11) is further provided with at least one weld groove (113), in which weld groove (113) a groove weld (D) is formed, which groove weld (D) is intended to be connected to the second beam body (2).

8. Frame girder according to any one of claims 1-4, characterized in that the first beam body (1) and the second beam body (2) are welded together by means of a suspension resistance welding process, and that the deck beam (12) is provided with a process hole (121).

9. A frame rail according to claim 8, characterised in that the deck beam (12) is provided with a flange at the inner bore wall of the porthole (121).

10. A frame member according to any one of claims 1-4, characterized in that the first beam body (1) and the second beam body (2) are welded together by a suspension resistance welding process, and the embedded section (21) is coated with a structural adhesive (3).

11. A frame rail according to any of claims 1-4, characterised in that the first beam (1) and the second beam (2) are welded together by means of a laser welding process.

12. A frame girder according to claim 11, characterized in that a laser welded seam (E) is formed between the first beam body (1) and the second beam body (2), which laser welded seam (E) is of the "x" or "mouth" type.

13. A vehicle employing a non-load-bearing body comprising a frame including two cross-members spaced apart in a transverse direction, wherein the cross-members are frame cross-members according to any one of claims 1 to 12.

14. A method of manufacturing a frame rail, the method being suitable for manufacturing a frame rail according to any one of claims 1 to 12, the method comprising:

s1, configuring the opening beam (11), the cover plate beam (12) and the second beam body (2);

s2, welding the opening beam (11) and the second beam body (2);

and S3, welding the cover plate beam (12) and the opening beam (11).

15. A method of manufacturing a frame member according to claim 14, further comprising a step S4 of welding said cover plate beam (12) and said second beam body (2).

16. The method for manufacturing a frame member according to claim 14 or 15, further comprising, between the step S1 and the step S2:

and S21, wrapping the structural adhesive (3) outside the embedding section (21).

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