CN212921414U - Connecting structure of rolled section bar, rolled section bar and protective cross beam for vehicle - Google Patents
Connecting structure of rolled section bar, rolled section bar and protective cross beam for vehicle Download PDFInfo
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- CN212921414U CN212921414U CN202021903913.1U CN202021903913U CN212921414U CN 212921414 U CN212921414 U CN 212921414U CN 202021903913 U CN202021903913 U CN 202021903913U CN 212921414 U CN212921414 U CN 212921414U
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Abstract
The utility model discloses a connection structure of roll-in section bar, roll-in section bar and automobile-used protection crossbeam, through the one end that sets up the steel sheet with welding position, and the contained angle that the extending direction of welding seam and the extending direction of junction exist sets up to [0, 15 ], when the axis of welding seam is 0 ~ 15 setting with junction parallel direction promptly, can realize the length (the welding seam melts wide promptly) the biggest optimum of two steel sheet welding seam connections, can reach several times of original connection length, realize the increase of connection length between the steel sheet, the joint strength has been improved. Additionally, utilize the utility model provides a connection structure only needs a welding operation to realize, has effectively improved welding construction's efficiency. When the alpha is 0 degree, the connection length between the two steel plates is equal to the penetration of the welding seam, and the connection strength is further improved. The utility model provides a roll-in section bar and automobile-used protection crossbeam, with connection structure belongs to same invention design, consequently has the same beneficial effect.
Description
Technical Field
The utility model belongs to the technical field of the roll-in technique and specifically relates to a connection structure, roll-in section bar and automobile-used protection crossbeam of roll-in section bar are related to.
Background
For welding between two steel plates stacked together, in the prior art, a welding device is arranged at 90 degrees perpendicular to the direction of the steel plates, please refer to fig. 1, welding is generally performed at a certain position in the middle of the steel plates, the penetration of a weld joint can reach the thickness of two layers of materials, but the penetration of the weld joint (i.e. the connection length between two steel plates) is difficult to widen continuously. Although the purpose of continuously widening the weld width of the weld can be achieved by multiple welding, the efficiency of welding construction is reduced by multiple welding.
Therefore, it is desirable to provide a solution that can widen the weld bead width while ensuring efficiency.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a connection structure, roll-in section bar and automobile-used protection crossbeam of roll-in section bar for can't compromise the efficiency of welding construction among the solution prior art and widen the problem that the welding seam melts wide.
In order to solve the technical problem, the utility model provides a connecting structure of rolled section bar, the rolled section bar includes first steel sheet and second steel sheet, stack after the first steel sheet is crooked on the second steel sheet, form the junction, the one end after the first steel sheet is crooked is placed on the second steel sheet, the first steel sheet with the second steel sheet passes through a welding seam to be connected, form the welding end;
the welding seam is arranged at one bent end of the first steel plate, the included angle between the extending direction of the welding seam and the extending direction of the connecting part is alpha, and the range of the alpha is [0 degrees, 15 degrees ].
Alternatively, the range of α is [0 °, 10 ° ].
Alternatively, the range of α is [0 °, 5 ° ].
Based on the same inventive concept, the utility model provides a roll-in section bar, including the connection structure of any one of the above-mentioned feature description.
Optionally, the roll-in section bar comprises a roll-in section bar body, wherein the roll-in section bar body is prepared by rolling and bending a steel belt for multiple times, the roll-in section bar is of a zigzag tube structure, the roll-in section bar body comprises a first square rectangular tube structure and a second square rectangular tube structure, a first accommodating space is arranged inside the first square rectangular tube structure, and a second accommodating space is arranged inside the second square rectangular tube structure;
one end of the steel belt is rolled and bent to form an L-shaped pipe structure, the L-shaped pipe structure is connected with the inner wall of the second square rectangular pipe through the connecting structure, and the other end of the steel belt is bent and connected with the inner wall of the second square rectangular pipe.
Optionally, two ends of the rolled section body in the first direction are respectively provided with a bent arc section, the two bent arc sections are bent along the second direction to form an arc, and the first direction is the extending direction of the rolled section.
Optionally, the arc-shaped side edge of the curved arc section close to the second direction is an inner curved arc, and the radius range of the inner curved arc is 200 mm-1000 mm.
Optionally, the angle of the inward curving arc is θ, and θ ranges from 15 ° to 60 °.
Based on the same inventive concept, the utility model also provides a vehicle protection crossbeam, including the roll-in section bar of any one in the above-mentioned feature description.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the utility model provides a connection structure of roll-in section bar, through the one end of setting welding position after the steel sheet bending, and the contained angle that the extending direction of welding seam and the extending direction of junction exist sets up to [0, 15 ], when the axis of welding seam is 0 ~ 15 with the junction parallel direction and sets up promptly, can realize the length (the welding seam melts wide) the biggest optimum of two steel sheet welding seam connections, can reach several times of original connection length, realize the increase of connection length between the steel sheet, the joint strength has been improved. Additionally, utilize the utility model provides a connection structure only needs a welding operation to realize, has effectively improved welding construction's efficiency.
2. When the alpha is 0 degree, the connection length between the two steel plates is equal to the penetration of the welding seam, and the connection strength is further improved.
3. The utility model provides a roll-in section bar and automobile-used protection crossbeam, with connection structure belongs to same invention design, consequently has the same beneficial effect.
Drawings
FIG. 1 is a schematic view of a prior art welded connection between steel plates;
fig. 2 is a schematic view of a connection structure of rolled profiles according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a rolled profile according to another embodiment of the present invention;
FIG. 4 is a cross-sectional view of FIG. 3;
FIG. 5 is a front view of FIG. 3;
wherein, in fig. 2-5: 10-a first steel plate, 20-a second steel plate, 30-a welding seam, 40-a welding device, 50-a first square rectangular pipe structure, 500-a first accommodating space, 60-a second square rectangular pipe structure, 600-a second accommodating space, 70-an L-shaped pipe structure, 80-a first welding seam, 90-a second welding seam and an A-curved arc section.
Detailed Description
The following description of the embodiments of the present invention will be described in more detail with reference to the drawings. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention.
In the description of the present invention, it should be understood that the terms "center", "upper", "lower", "left", "right", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Referring to fig. 2, an embodiment of the present invention provides a connection structure of rolled sections, the rolled sections include a first steel plate 10 and a second steel plate 20, the first steel plate 10 is stacked on the second steel plate 20 after bending to form a joint, one end of the first steel plate 10 after bending is placed on the second steel plate 20, and the first steel plate 10 is connected with the second steel plate 20 through a welding seam 30 to form a welding end. The welding seam 30 is arranged at one bent end of the first steel plate 10, an included angle between the extending direction of the welding seam 30 and the extending direction of the joint is alpha, and the range of the alpha is [0 degrees, 15 degrees ].
The difference lies in with prior art, the embodiment of the utility model provides a connecting structure of roll-in section bar, through setting up the one end at the steel sheet with welding position, and the contained angle that the extending direction of welding seam 30 and the extending direction of junction exist sets up to [0, 15 ], when the axis of welding seam 30 is 0 ~ 15 setting with the junction parallel direction promptly, can realize the length (welding seam 30 melts wide) the biggest optimality that two steel sheet welding seams 30 connect, can reach several times of original connection length, realize the increase of connection length between the steel sheet, the joint strength has been improved. Additionally, utilize the utility model provides a connection structure only needs a welding operation to realize, has effectively improved welding construction's efficiency. It can be understood that when the welding operation is performed, the extending opposite included angle of the connection part of the central axis of the welding device 40 and the steel plate is set to [0 degrees, 15 degrees ], so that the included angle α between the extending direction of the welding seam 30 and the extending direction of the connection part can be controlled. In the present embodiment, the welding device 40 may be a laser welding device 40, and in other embodiments, the welding device 40 may be of other types, such as a resistance welding device, an argon arc welding device, a plasma arc welding device, or an electron beam welding device, which is not limited herein.
It should be noted that, in the embodiment of the present invention, the range of α is set as [0 °, 15 ° ], and in other embodiments, the range of α may also be [0 °, 10 ° ] or [0 °, 5 ° ] or 15 °, and the specific range is not limited, and can be selected and adjusted according to actual needs. The alpha is preferably 0 degrees, and when the alpha is 0 degrees, the connection length between the two steel plates is equal to the penetration depth of the welding seam 30, so that the connection strength is further improved.
Based on the same inventive concept, another embodiment of the present invention further provides a rolled profile, please refer to fig. 3 to 5, including the connection structure described in any of the above feature descriptions.
Specifically, please refer to fig. 3 and 4, the rolling profile body is manufactured by rolling and bending a steel strip for multiple times, the rolling profile is a zigzag tube structure, the rolling profile body includes a first square rectangular tube structure 50 and a second square rectangular tube structure 60, a first receiving space 500 is provided inside the first square rectangular tube structure 50, and a second receiving space 600 is provided inside the second square rectangular tube structure 60. One end of the steel strip is rolled and bent to form an L-shaped pipe structure 70, the L-shaped pipe structure 70 is connected with the inner wall of the second square rectangular pipe structure 60 through the connecting structure, and the other end of the steel strip is bent and connected with the inner wall of the second square rectangular pipe structure 60.
When the small-sized vehicle travels in the reverse direction, the small-sized vehicle easily enters the front lower part of the commercial vehicle to cause casualties, in order to prevent the occurrence of the condition, a protective device is required to be arranged at the front lower part of the vehicle, the purpose of the protective device is to resist the entering of a car, a beam with high rigidity is required, and due to the fact that the impact in different directions needs to be prevented, certain radians are generally arranged on two sides of the beam. The preceding lower protection crossbeam of traditional commercial car is square rectangular pipe, utilizes the bending machine to carry out both ends bending process and forms, but because square rectangular pipe need guarantee intensity and rigidity, consequently, square rectangular pipe's material is very thick, and weight is big. Based on the consideration, the inventor proposes the rolling section, the rolling section adopts a reversed Y-shaped high-strength rolling section, so that the material can be thinned and lightened, and the strength and the rigidity meeting the requirements of regulations are ensured.
Although the utility model provides a roll-in section bar has improved bulk strength and rigidity than square rectangular pipe, satisfies the vehicle lightweight requirement, but because the complication of cross-section, there is the welding seam 30 fracture during leading to traditional camber process to add man-hour, roll-in section bar can adopt laser welding, is provided with two welding seams 30, and first welding seam 80 is the horn welding, and second welding seam 90 is double-deck stitch welding, please refer to fig. 4.
Roll-in section bar second welding seam 90 department, because the weld width that laser welding produced is narrow, generally about 1mm, second welding seam 90 atress mainly is tensile stress from top to bottom and the shear stress of left right direction simultaneously, lead to producing welding seam 30 fracture easily, consequently need improve welding strength through increase welding seam 30 weld width, if weld according to the welding mode among the prior art, then welding equipment and the perpendicular 90 setting of steel sheet direction, welding seam 30 weld depth of fusion can reach the thickness of two-layer material, but welding seam 30 weld width (two-layer material connection length) hardly continues to widen, problem point focus is increasing welding seam 30 weld width promptly, in order to solve this problem, usable the utility model provides a connection structure optimizes welding position and welding angle, and welding direction and position adjust promptly, can solve this problem.
Preferably, referring to fig. 3 and 5, as can be seen from fig. 3 and 5, two ends of the rolled section are respectively bent upwards to form a radian, two ends of the rolled section body in a first direction are respectively provided with a bent arc section a, both bent arc sections a are bent along a second direction to form an arc, and the first direction is an extending direction of the rolled section. It is noted that the curved segment a is integrally formed with the straight segment portion. The arc-shaped side edge of the curved arc section A close to the second direction is an inner curved arc, and the radius range of the inner curved arc is preferably 200 mm-1000 mm. The angle of the inward-bending arc is theta, and the range of theta is preferably 15-60 degrees. Utilize the utility model provides a behind this kind of bended-arc structural design, the roll-in section bar is not ftractureed at the regional welding seam of bended-arc again, and the material fold of bended-arc department simultaneously is sunken, defects such as material deformation improve greatly.
Based on the same inventive concept, another embodiment of the present invention further provides a protective cross beam for a vehicle, including the rolled section bar described in any of the above feature descriptions.
To sum up, the utility model discloses following beneficial effect has:
the utility model provides a connection structure of roll-in section bar, through the one end that sets up the steel sheet with welding position to the contained angle that the extending direction of welding seam and the extending direction of junction exist sets up to [0, 15 ], when the axis of welding seam is 0 ~ 15 with junction parallel direction and sets up promptly, can realize the length (the welding seam melts wide) the biggest optimum that two steel sheet welding seams are connected, can reach several times of original connection length, realize the increase of connection length between the steel sheet, improved joint strength. Additionally, utilize the utility model provides a connection structure only needs a welding operation to realize, has effectively improved welding construction's efficiency. When the theta is 0 degree, the connection length of the welding line between the two steel plates is equal to the penetration of the welding line, and the connection strength is further improved. The utility model provides a roll-in section bar and automobile-used protection crossbeam, with connection structure belongs to same invention design, consequently has the same beneficial effect.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example" or "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. And the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.
The above description is only for the preferred embodiment of the present invention, and does not limit the present invention. Any technical personnel who belongs to the technical field, in the scope that does not deviate from the technical scheme of the utility model, to the technical scheme and the technical content that the utility model discloses expose do the change such as the equivalent replacement of any form or modification, all belong to the content that does not break away from the technical scheme of the utility model, still belong to within the scope of protection of the utility model.
Claims (9)
1. The connecting structure of the rolled section is characterized in that the rolled section comprises a first steel plate and a second steel plate, the first steel plate is stacked on the second steel plate after being bent to form a joint, one bent end of the first steel plate is placed on the second steel plate, and the first steel plate is connected with the second steel plate through a welding seam to form a welding end;
the welding seam is arranged at one bent end of the first steel plate, the included angle between the extending direction of the welding seam and the extending direction of the connecting part is alpha, and the range of the alpha is [0 degrees, 15 degrees ].
2. A connecting structure of rolled profiles according to claim 1, characterized in that said α ranges from [0 °, 10 ° ].
3. A connecting structure of rolled profiles according to claim 1, characterized in that said α ranges from [0 °, 5 ° ].
4. Rolled profile, characterized in that it comprises a joining structure according to any one of claims 1 to 3.
5. The rolled section bar according to claim 4, further comprising a rolled section bar body, wherein the rolled section bar body is prepared by rolling and bending a steel strip for a plurality of times, the rolled section bar is a zigzag tube structure, the rolled section bar body comprises a first square rectangular tube structure and a second square rectangular tube structure, the first square rectangular tube structure has a first accommodating space therein, and the second square rectangular tube structure has a second accommodating space therein;
one end of the steel belt is rolled and bent to form an L-shaped pipe structure, the L-shaped pipe structure is connected with the inner wall of the second square rectangular pipe through the connecting structure, and the other end of the steel belt is bent and connected with the inner wall of the second square rectangular pipe.
6. A rolled profile according to claim 5, wherein the rolled profile body has a curved section at each end in a first direction, both curved sections being bent in a second direction and forming an arc, the first direction being the direction in which the rolled profile extends.
7. A rolled profile according to claim 6, wherein the curved side of the curved section adjacent to the second direction is an inward curve having a radius in the range of 200mm to 1000 mm.
8. A rolled profile according to claim 7, wherein the angle of the inward curving is θ, said θ being in the range of 15 ° to 60 °.
9. A protective cross member for vehicles, characterized in that it comprises a rolled profile according to any one of claims 4 to 8.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021903913.1U CN212921414U (en) | 2020-09-03 | 2020-09-03 | Connecting structure of rolled section bar, rolled section bar and protective cross beam for vehicle |
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| CN202021903913.1U CN212921414U (en) | 2020-09-03 | 2020-09-03 | Connecting structure of rolled section bar, rolled section bar and protective cross beam for vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113263281A (en) * | 2021-05-18 | 2021-08-17 | 广州中益机械有限公司 | Method for welding thin plate and thick plate |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113263281A (en) * | 2021-05-18 | 2021-08-17 | 广州中益机械有限公司 | Method for welding thin plate and thick plate |
| CN113263281B (en) * | 2021-05-18 | 2022-02-11 | 广州中益机械有限公司 | Method for welding thin plate and thick plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Connecting structure of rolled profiles, rolled profiles, and protective beams for vehicles Effective date of registration: 20230303 Granted publication date: 20210409 Pledgee: Bank of Communications Ltd. Kunshan branch Pledgor: Suzhou yichuangte Intelligent Manufacturing Co.,Ltd. Registration number: Y2023980034076 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |