CN219524020U - Auxiliary frame before steel - Google Patents
Auxiliary frame before steel Download PDFInfo
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- CN219524020U CN219524020U CN202223595133.7U CN202223595133U CN219524020U CN 219524020 U CN219524020 U CN 219524020U CN 202223595133 U CN202223595133 U CN 202223595133U CN 219524020 U CN219524020 U CN 219524020U
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- plate body
- longitudinal beam
- plate
- reinforcing plate
- steel
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Abstract
The utility model relates to a steel front auxiliary frame, which comprises a hollow frame body, wherein the frame body comprises a left longitudinal beam, a right longitudinal beam and a front cross beam, the front ends of the longitudinal beams are respectively provided with a vertically extending reinforcing plate at intervals along the width direction of the longitudinal beams, each reinforcing plate comprises a plate body, the cross section of the plate body is arc-shaped and protrudes backwards, the inner side of the upper end of the plate body is provided with an upturned edge extending along the length direction of the plate body and turning forwards, the lower end of the plate body is provided with a downturned edge extending along the length direction of the plate body and turning forwards, a first welding seam is formed between the upper surface of the upturned edge and the inner top surface of the corresponding longitudinal beam, a second welding seam is formed between the lower surface of the downturned edge and the inner bottom surface of the corresponding longitudinal beam, the outer side of the upper end of the plate body extends upwards and outwards along the plate body where the lower edge is located to form an outwards protruding mounting lug, and a third welding seam is formed between the periphery of the mounting lug and the inner surface of the corresponding longitudinal beam. The utility model is convenient for welding, and can improve the fatigue life, rigidity and strength of the reinforcing plate.
Description
Technical Field
The utility model relates to the field of automobile chassis parts, in particular to a steel front auxiliary frame.
Background
The front auxiliary frame is an important automobile chassis component, and can provide a mounting bracket and space required by mounting for suspension components, steering components, engine suspension components and the like, so that the front auxiliary frame has various requirements on the aspects of performance of the front auxiliary frame, such as strength, mode, rigidity, fatigue, collision safety and the like. Such as chinese utility model patent No. ZL 201922493002.X (grant publication No. CN 212267630U), chinese utility model patent No. ZL 202023019709.6 (grant publication No. CN 214875127U).
The front subframe is generally a frame structure and is composed of a front cross member, a rear cross member, a left side member, and a right side member. In addition, each cross beam and each longitudinal beam are generally hollow structures, and reinforcing plates are generally arranged in the longitudinal beams to improve the strength of the front auxiliary frame so as to improve the internal structural strength of the front auxiliary frame. However, the existing reinforcing plate is welded and fixed only through the corresponding positions of the upper side edge and the lower side edge and the inner surface of the longitudinal beam, and the welding length and the width are insufficient, so that the performances of strength, rigidity, fatigue and the like of the reinforcing plate of the longitudinal beam are required to be further improved.
Disclosure of Invention
The utility model aims to provide a steel front auxiliary frame with a reinforcing plate and a longitudinal beam which are convenient to weld.
The second technical problem to be solved by the utility model is to provide the steel auxiliary frame with high fatigue life, rigidity and strength at the reinforcing plate aiming at the prior art.
The utility model solves at least one of the technical problems by adopting the following technical proposal: a steel front auxiliary frame comprises a hollow frame body, the frame body comprises a left longitudinal beam, a right longitudinal beam and a front cross beam connected between the front ends of the left longitudinal beam and the right longitudinal beam, the front ends of the longitudinal beams are respectively provided with a vertically extending reinforcing plate at intervals along the width direction, the steel front auxiliary frame is characterized in that each reinforcing plate comprises a plate body, the cross section of the plate body is arc-shaped and protrudes backwards, the inner side of the upper end of the plate body is provided with an upturned edge extending along the length direction and turning forwards, the lower end of the plate body is provided with a downturned edge extending along the length direction and turning forwards,
a first welding joint is formed between the upper surface of the upper flanging and the inner top surface of the corresponding longitudinal beam, a second welding joint is formed between the lower surface of the lower flanging and the inner bottom surface of the corresponding longitudinal beam, the outer side of the upper end of the plate body extends upwards and outwards along the plate body where the upper end of the plate body is located to form an outwards protruding mounting lug, and a third welding joint is formed between the periphery of the mounting lug and the inner surface of the corresponding longitudinal beam.
Further, the width of the upper flange of each reinforcing plate is increased from inside to outside to form a trapezoid as a whole, and each upper flange protrudes outwards relative to the outer side of the plate body where the upper flange is located. Therefore, the welding length and width of the upper flanging and the inner top surface of the longitudinal beam can be further increased, the stress of the joint of the welded upper flanging and the plate body can be reduced, and the outward protruding design is convenient for welding operation.
Further, the length of the free end of the upturn of each reinforcing plate is respectively more than or equal to twice of the connecting end of the reinforcing plate. Thereby the welding length and width of the upper flanging and the inner top surface of the longitudinal beam can be increased to the greatest extent.
Further, the upper end edge of the plate body of each reinforcing plate is recessed downwards to form a notch, the notch is positioned between the corresponding upper flanging and the mounting lug, and the opening edge of the notch is arc-shaped and is smoothly connected with the inner side edge of the corresponding upper flanging. Thereby being capable of breaking the stress transmission between the welding part of the upper flanging and the welding part of the mounting lug and further improving the fatigue life of the reinforcing plate.
Further, the middle part of the plate body of each reinforcing plate is respectively protruded forward to form a boss, and the boss is provided with a through hole which is matched with the boss in shape and extends along the width direction of the plate body. The steel auxiliary frame is matched with the plate body in a design mode that the cross section of the plate body is arc-shaped and protrudes backwards, the rigidity and the mildness of the structure of the reinforcing plate are improved, the weight of the steel auxiliary frame is large, the weight of the reinforcing plate can be reduced through the design through holes, and therefore the steel auxiliary frame is light.
Further, the outer side edge of the plate body of each reinforcing plate forms a mounting gap between the lower portion of the corresponding mounting lug and the inner surface of the corresponding side member, respectively. Under the condition of ensuring the welding length of the reinforcing plate and the longitudinal beam, the stress transmitted to the reinforcing plate by the longitudinal beam in the running process of the vehicle is reduced, so that the fatigue life of the reinforcing plate is further prolonged.
Further, each reinforcing plate is arranged obliquely outwards from front to back. The stress transmitted to the reinforcing plate through the longitudinal beam in the running process of the vehicle can be decomposed through the inclined design, so that the stress actually transmitted to the reinforcing plate is reduced.
Further, the front ends of the longitudinal beams are respectively bent outwards from back to front to form bent sections, and the reinforcing plates are respectively arranged at the junctions of the bent sections of the longitudinal beams and other parts. The intensity of the girder at the bending section is relatively weaker, and the reinforcing plate is arranged at the bending section, so that the intensity of the girder can be better improved through the reinforcing plate.
Further, the left and right ends of the front cross member are respectively fixed on the top surfaces of the corresponding longitudinal beams, and the reinforcing plates are respectively arranged below the ends of the front cross member. The connection of the front cross beam and each longitudinal beam needs to bear larger impact force in the running process of the vehicle, and the reinforcing plate is arranged as above, so that the integral rigidity and the strength of the steel auxiliary frame are enhanced.
Further, a tower is respectively installed on the top surface of the frame body above each reinforcing plate. The tower is used for being connected with the vehicle body accessory, and the reinforcing plate is arranged at the tower, so that the structural rigidity and strength of the assembled steel auxiliary frame and the vehicle body can be improved.
Compared with the prior art, the utility model has the advantages that: according to the utility model, the upper flanging and the lower flanging are respectively arranged on the reinforcing plate, so that the welding width between the reinforcing plate and the inner surface of the longitudinal beam is increased, the welding is convenient, and meanwhile, the stress of the welding part is reduced, so that the fatigue life, the rigidity and the strength of the reinforcing plate are improved.
Further, by arranging the mounting lugs, the welding length between the reinforcing plate and the inner surface of the longitudinal beam is increased, and the rigidity and strength of the reinforcing plate are further increased. In addition, the cross section of the plate body of the reinforcing plate is arc-shaped and protrudes backwards, so that the stress at the reinforcing plate in the running process of the vehicle is reduced, and the fatigue resistance at the reinforcing plate is further improved.
Drawings
FIG. 1 is a schematic view of a reinforcing plate according to an embodiment of the present utility model;
FIG. 2 is a schematic view of the structure of FIG. 1 in another direction;
FIG. 3 is a schematic view of a steel subframe according to an embodiment of the present utility model;
FIG. 4 is a schematic view of the structure of FIG. 3 in another direction;
fig. 5 is a schematic view of the structure of fig. 3 in still another direction.
Detailed Description
The utility model is described in further detail below with reference to the embodiments of the drawings.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for purposes of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and because the disclosed embodiments of the present utility model may be arranged in different orientations, these directional terms are merely for illustration and should not be construed as limitations, such as "upper", "lower" are not necessarily limited to orientations opposite or coincident with the direction of gravity. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly.
As shown in fig. 3 to 5, a steel subframe includes a hollow frame body 1, the frame body 1 including a left side member 11, a right side member 12, and a front cross member 13 connected between front ends of the left side member 11 and the right side member 12, wherein reinforcing plates 2 extending vertically are provided at the front ends of the respective side members at intervals in a width direction thereof. As shown in fig. 1 to 2, each of the reinforcing plates 2 includes a plate body 20, the plate body 20 has an arc-shaped cross section and is convex rearward, an upper flange 21 extending in the longitudinal direction thereof and forwardly turned on the inner side of the upper end of the plate body 20, and a lower flange 22 extending in the longitudinal direction thereof and forwardly turned on the lower end of the plate body 20. A first welded seam (not shown) is formed between the upper surface of the upper flange 21 and the inner top surface of the corresponding side member, a second welded seam (not shown) is formed between the lower surface of the lower flange 22 and the inner bottom surface of the corresponding side member, and the outer side of the upper end of the panel body 20 extends upward and outward along the panel body 20 where it is located to form an outwardly protruding mounting lug 23, and a third welded seam (not shown) is formed between the peripheral edge of the mounting lug 23 and the inner surface of the corresponding side member.
According to the utility model, the upper flanging 21 and the lower flanging 22 are respectively arranged on the reinforcing plate 2, so that the welding width with the inner surface of the longitudinal beam is increased, the welding is convenient, and meanwhile, the stress at the welding position is reduced, so that the fatigue life, the rigidity and the strength of the reinforcing plate 2 are improved. Meanwhile, by providing the mounting lugs 23, the welding length of the reinforcing plate 2 with the inner surface of the longitudinal beam is increased, and the rigidity and strength of the reinforcing plate 2 are further increased. In addition, the plate body 20 has an arc-shaped cross section and protrudes backward, which is beneficial to reducing the stress at the reinforcing plate 2 during the running of the vehicle, thereby further improving the fatigue resistance at the reinforcing plate 2.
Preferably, the width of the upper flanges 21 of each reinforcing plate 2 increases from inside to outside to form a trapezoid, and each upper flange 21 protrudes outwards relative to the outer side of the plate 20. Therefore, the welding length and width of the upper flange 21 and the inner top surface of the longitudinal beam can be further increased, the stress at the joint of the welded upper flange 21 and the plate body 20 can be reduced, and the outward protruding design is convenient for welding operation. It is further preferable that the length of the free end of the upper flange 21 of each of the above-mentioned reinforcing plates 2 is two times or more of the connecting end thereof, respectively, so that the welding length and width of the upper flange 21 and the inner top surface of the side member can be maximized.
Further, the upper end edge of the plate body 20 of each reinforcing plate 2 is recessed downward to form a notch 24, the notch 24 is located between the corresponding upper flange 21 and the mounting lug 23, and the opening edge of the notch 24 is arc-shaped and is smoothly connected with the inner side edge of the corresponding upper flange 21. Thereby breaking the stress transmission between the weld of the upturn 21 and the weld of the mounting lug 23, further improving the fatigue life of the reinforcing plate 2. Further, the outer side of the plate body 20 of each of the reinforcement plates 2 forms a mounting gap 4 between the lower portion of the corresponding mounting lug 23 and the inner surface of the corresponding side member, respectively. Under the condition of ensuring the welding length of the reinforcing plate 2 and the longitudinal beam, the stress transmitted to the reinforcing plate 2 by the longitudinal beam in the running process of the vehicle is reduced, so that the fatigue life of the reinforcing plate 2 is further prolonged.
Further, the middle portions of the plate bodies 20 of the reinforcing plates 2 are respectively protruded forward to form bosses 201, and the bosses 201 are provided with through holes 202 which are matched with the shapes of the bosses and extend along the width direction of the plate bodies 20. The steel auxiliary frame is matched with the plate body 20 in a design mode that the cross section of the steel auxiliary frame is arc-shaped and protrudes backwards, the rigidity and the mildness of the structure of the reinforcing plate 2 are improved, the weight of the steel auxiliary frame is large, the weight of the reinforcing plate 2 can be reduced through the design of the through holes, and therefore the steel auxiliary frame is light.
In addition, in the present embodiment, each of the reinforcing plates 2 is disposed obliquely outward from front to rear. The stress transmitted to the reinforcing plate 2 through the longitudinal beam in the running process of the vehicle can be decomposed through the inclined design, so that the stress actually transmitted to the reinforcing plate 2 is reduced.
In the present utility model, the specific arrangement position of each reinforcing plate 2 in the corresponding longitudinal beam has an important effect, specifically, in this embodiment, the front end of each longitudinal beam is bent outwards from back to front to form a bending section 14, and each reinforcing plate 2 is arranged at the junction of the bending section 14 and other parts of each longitudinal beam. The strength of the girder at the bending section 14 is relatively weak, and the provision of the reinforcement plate 2 there is advantageous for better lifting of the girder strength by the reinforcement plate 2. Further, both left and right ends of the front cross member 13 are fixed to the top surfaces of the corresponding side members, respectively, and the reinforcing plates 2 are disposed below the ends of the front cross member 13, respectively. The connection of the front cross beam 13 and each longitudinal beam needs to bear larger impact force in the running process of the vehicle, and the reinforcing plate 2 is arranged as above, so that the overall rigidity and strength of the steel auxiliary frame are enhanced. A tower 3 is attached to the top surface of the frame 1 above each of the reinforcing plates 2. The tower 3 is used for connecting with the accessories of the vehicle body, and the reinforcing plate 2 is arranged at the tower, so that the structural rigidity and strength of the assembled steel auxiliary frame and the vehicle body can be improved.
Claims (10)
1. The steel front auxiliary frame comprises a hollow frame body (1), wherein the frame body (1) comprises a left longitudinal beam (11), a right longitudinal beam (12) and a front cross beam (13) connected between the front ends of the left longitudinal beam (11) and the right longitudinal beam (12), the front ends of the longitudinal beams are respectively provided with a reinforcing plate (2) which extends vertically along the width direction of the front end of each longitudinal beam,
each reinforcing plate (2) comprises a plate body (20), the cross section of the plate body (20) is arc-shaped and protrudes backwards, the inner side of the upper end of the plate body (20) is provided with an upper flanging (21) which extends along the length direction and turns forwards, the lower end of the plate body (20) is provided with a lower flanging (22) which extends along the length direction and turns forwards,
a first welding joint is formed between the upper surface of the upper flanging (21) and the inner top surface of the corresponding longitudinal beam, a second welding joint is formed between the lower surface of the lower flanging (22) and the inner bottom surface of the corresponding longitudinal beam, the outer side of the upper end of the plate body (20) extends upwards and outwards along the position of the plate body (20) where the upper end of the plate body is located to form an outwards protruding mounting lug (23), and a third welding joint is formed between the periphery of the mounting lug (23) and the inner surface of the corresponding longitudinal beam.
2. The steel front subframe according to claim 1, wherein the width of the upper flange (21) of each reinforcing plate (2) increases from inside to outside to form a trapezoid as a whole, and each upper flange (21) protrudes outwardly relative to the outer side of the plate body (20) in which it is located.
3. A steel front subframe as claimed in claim 2, characterized in that the free end of the upturn (21) of each reinforcement plate (2) has a length of greater than or equal to twice the length of its connecting end.
4. A steel front subframe according to claim 1, 2 or 3, characterized in that the upper end edges of the plate bodies (20) of the reinforcing plates (2) are each recessed downward to form a notch (24), the notches (24) being located between the corresponding upturn (21) and the mounting lugs (23), and the mouth edges of the notches (24) being arc-shaped and being smoothly connected to the inner side edges of the corresponding upturn (21).
5. A steel front subframe according to claim 1, 2 or 3, wherein the middle portion of the plate body (20) of each reinforcing plate (2) is respectively protruded forward to form a boss (201), and the boss (201) is provided with a through hole (202) which is matched with the shape thereof and extends in the width direction of the plate body (20).
6. A steel front subframe according to claim 1 or 2 or 3, characterized in that the outer side of the plate body (20) of each reinforcement plate (2) forms a mounting gap (4) between the lower portion of the corresponding mounting lug (23) and the inner surface of the corresponding longitudinal beam, respectively.
7. A steel front subframe according to claim 1 or 2 or 3, characterized in that each reinforcement plate (2) is arranged obliquely outwards from front to rear, respectively.
8. A steel front subframe according to claim 1, 2 or 3, wherein the front end of each of said longitudinal members is bent outwardly from rear to front to form a bent section (14), and each of said reinforcing plates (2) is provided at the junction of the bent section (14) and the other part of each of said longitudinal members.
9. A steel front subframe according to claim 1, 2 or 3, wherein the left and right ends of the front cross member (13) are respectively fixed to the top surfaces of the corresponding side members, and the reinforcing plates (2) are respectively disposed under the ends of the front cross member (13).
10. A steel front subframe according to claim 9, characterized in that a tower (3) is mounted on the top surface of the frame body (1) above each reinforcement plate (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223595133.7U CN219524020U (en) | 2022-12-30 | 2022-12-30 | Auxiliary frame before steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223595133.7U CN219524020U (en) | 2022-12-30 | 2022-12-30 | Auxiliary frame before steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219524020U true CN219524020U (en) | 2023-08-15 |
Family
ID=87631484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223595133.7U Active CN219524020U (en) | 2022-12-30 | 2022-12-30 | Auxiliary frame before steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219524020U (en) |
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2022
- 2022-12-30 CN CN202223595133.7U patent/CN219524020U/en active Active
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