CN110588784B - Automobile longitudinal beam structure and manufacturing method thereof - Google Patents
Automobile longitudinal beam structure and manufacturing method thereof Download PDFInfo
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- CN110588784B CN110588784B CN201910928440.6A CN201910928440A CN110588784B CN 110588784 B CN110588784 B CN 110588784B CN 201910928440 A CN201910928440 A CN 201910928440A CN 110588784 B CN110588784 B CN 110588784B
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- middle section
- longitudinal beam
- reinforcing plate
- longeron
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/02—Understructures, i.e. chassis frame on which a vehicle body may be mounted comprising longitudinally or transversely arranged frame members
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Body Structure For Vehicles (AREA)
Abstract
The invention relates to an automobile longitudinal beam structure and a manufacturing method thereof, belonging to the technical field of automobile longitudinal beams.
Description
Technical Field
The invention belongs to the technical field of automobile longitudinal beams, and particularly relates to an automobile longitudinal beam structure and a manufacturing method thereof.
Background
The middle section of the longitudinal beam of the existing electric-only van-type logistics vehicle interferes with the envelope of the tire, and the section of the middle section of the longitudinal beam is locally avoided because the envelope of the tire cannot be changed, so that when the vehicle is subjected to 50 km frontal collision test, the position of the longitudinal beam, which is used for avoiding a wheel package, is easy to generate abnormal bending, and the crushing mode of the longitudinal beam is abnormal, so that the collision energy absorption is influenced, and the survival space of passengers in the vehicle is influenced.
Disclosure of Invention
1. Technical problem to be solved by the invention
The invention aims to solve the problem that the living space is affected due to bending deformation in the front collision process caused by weak local strength of the middle section of the longitudinal beam of the existing pure electric van type logistics vehicle.
2. Technical proposal
In order to achieve the above purpose, the technical scheme provided by the invention is as follows:
the invention relates to an automobile longitudinal beam structure, which comprises a longitudinal beam middle section body, a longitudinal beam middle section upper reinforcing plate and a longitudinal beam middle section lower reinforcing plate, wherein the cross sections of the longitudinal beam middle section body, the longitudinal beam middle section upper reinforcing plate and the longitudinal beam middle section lower reinforcing plate are of U-shaped structures, the inner wall of the longitudinal beam middle section body is fixedly connected with the outer wall of the longitudinal beam middle section lower reinforcing plate in a fitting manner, the inner wall of the longitudinal beam middle section lower reinforcing plate is fixedly connected with the outer wall of the longitudinal beam middle section upper reinforcing plate, a longitudinal beam middle section supporting plate is arranged in the longitudinal beam middle section upper reinforcing plate, the longitudinal beam middle section supporting plate is of U-shaped structures, the two ends of the longitudinal beam middle section supporting plate are provided with fixing structures, each fixing structure comprises a plurality of fixing plates which are mutually perpendicular, the longitudinal beam middle section supporting plates are fixedly connected with the longitudinal beam middle section body, the longitudinal beam middle section body and the longitudinal beam reinforcing plates form a closed space, and the longitudinal beam middle section upper reinforcing plate, the longitudinal beam middle section lower reinforcing plate and the longitudinal beam middle section supporting plate are all positioned in the closed space.
Preferably, the stringer middle section support plate is perpendicular to the stringer middle section body.
Preferably, the fixing structure comprises a fixing plate positioned on the side edges and parallel to each other and a fixing plate positioned on the top and perpendicular to the fixing plate of the side edges, wherein the fixing plate positioned on the side edges is fixedly connected with the inner wall of the reinforcing plate on the middle section of the longitudinal beam in a fit manner, and the fixing plate positioned on the top is fixedly connected with the bottom end of the reinforcing plate of the longitudinal beam in a fit manner.
Preferably, the side walls of the longitudinal beam middle section body, the longitudinal beam middle section upper reinforcing plate and the longitudinal beam middle section lower reinforcing plate are respectively provided with a plurality of connecting holes, and bolts are arranged in the connecting holes.
A manufacturing method of an automobile longitudinal beam structure comprises the steps of sequentially assembling, welding and connecting a longitudinal beam middle section body, a longitudinal beam middle section upper reinforcing plate, a longitudinal beam middle section lower reinforcing plate, a longitudinal beam middle section supporting plate and a longitudinal beam reinforcing plate.
Preferably, the manufacturing method comprises the steps of:
s100, the assembly is formed by connecting an upper reinforcing plate in the middle section of the longitudinal beam and a supporting plate in the middle section of the longitudinal beam through two layers of spot welding;
s200, assembling, namely placing the lower reinforcing plate of the middle section of the longitudinal beam into the main body of the middle section of the longitudinal beam, and then placing the assembly into the lower reinforcing plate of the middle section of the longitudinal beam to form an assembly body;
s300, welding, namely connecting three movable parts of the assembly body in a three-layer spot welding mode;
s400, packaging, namely placing the longitudinal beam reinforcing plate on the assembly, and connecting the longitudinal beam reinforcing plate with the assembly and the longitudinal beam middle section body by adopting carbon dioxide arc welding and spot welding respectively.
3. Advantageous effects
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:
(1) The invention relates to an automobile longitudinal beam structure, which comprises a longitudinal beam middle section body, a longitudinal beam middle section upper reinforcing plate and a longitudinal beam middle section lower reinforcing plate, wherein the cross sections of the longitudinal beam middle section body, the longitudinal beam middle section upper reinforcing plate and the longitudinal beam middle section lower reinforcing plate are of U-shaped structures, the inner wall of the longitudinal beam middle section body is fixedly connected with the outer wall of the longitudinal beam middle section lower reinforcing plate in a bonding way, the inner wall of the longitudinal beam middle section lower reinforcing plate is fixedly connected with the outer wall of the longitudinal beam middle section upper reinforcing plate in a bonding way, a longitudinal beam middle section supporting plate is arranged in the longitudinal beam middle section upper reinforcing plate, the longitudinal beam middle section supporting plate is of a U-shaped structure, two ends of the longitudinal beam middle section supporting plate are provided with fixing structures, each fixing structure comprises a plurality of fixing plates which are perpendicular to each other, and the longitudinal beam middle section is internally provided with a plurality of reinforcing structures, so that abnormal bending is not easy to occur at the position of a longitudinal beam avoiding wheel package, collision energy absorption is not influenced, and survival space of passengers in an automobile is not reduced.
(2) According to the automobile longitudinal beam structure, the longitudinal beam reinforcing plate is arranged on the longitudinal beam middle section supporting plate and fixedly connected with the longitudinal beam middle section body, the longitudinal beam reinforcing plate further improves the deformation resistance of the whole device, meanwhile, the longitudinal beam middle section supporting plate positioned below the longitudinal beam reinforcing plate is protected and limited, and the stability and firmness of the device are improved.
Drawings
FIG. 1 is a schematic illustration of an automotive rail structure according to the present invention;
FIG. 2 is an assembled view of an automotive rail structure according to the present invention;
FIG. 3 is a top view of an assembled automotive rail structure of the present invention;
FIG. 4 is a cross-sectional view at A of an automotive rail structure according to the present invention;
fig. 5 is a schematic view of a middle rail stay plate of an automobile rail structure according to the present invention;
FIG. 6 is a top view of an automotive rail structure of the present invention;
fig. 7 is a flow chart of a method of the present invention for an automotive rail structure.
Reference numerals in the schematic drawings illustrate:
100. a stringer middle section body; 110. a connection hole;
200. a reinforcing plate is arranged on the middle section of the longitudinal beam;
300. a reinforcing plate is arranged at the middle section of the longitudinal beam;
400. a longitudinal beam middle section supporting plate; 410. a fixed structure; 411. a fixing plate;
500. and a longitudinal beam reinforcing plate.
Detailed Description
In order that the invention may be readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings, in which, however, the invention may be embodied in many different forms and are not limited to the embodiments described herein, but are instead provided for the purpose of providing a more thorough and complete disclosure of the invention.
It will be understood that when an element is referred to as being "mounted" on another element, it can be directly on the other element or intervening elements may also be present; when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present; the terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs; the terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention; the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Example 1
Referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5 and fig. 6, an automobile longitudinal beam structure of this embodiment includes a longitudinal beam middle section body 100, a longitudinal beam middle section upper reinforcing plate 200 and a longitudinal beam middle section lower reinforcing plate 300, the cross section of the longitudinal beam middle section body 100, the longitudinal beam middle section upper reinforcing plate 200 and the longitudinal beam middle section lower reinforcing plate 300 is of a U-shaped structure, the inner wall of the longitudinal beam middle section body 100 is fixedly connected with the outer wall of the longitudinal beam middle section lower reinforcing plate 300, the inner wall of the longitudinal beam middle section lower reinforcing plate 300 is fixedly connected with the outer wall of the longitudinal beam middle section upper reinforcing plate 200, a longitudinal beam middle section supporting plate 400 is arranged in the longitudinal beam middle section upper reinforcing plate 200, the longitudinal beam middle section supporting plate 400 is of a U-shaped structure, two ends of the longitudinal beam middle section supporting plate 400 are provided with fixing structures 410, the fixing structures 410 comprise a plurality of mutually perpendicular fixing plates 411, the conventional logistics automobile longitudinal beam middle section interfere with a tire envelope, local avoidance is carried out on the longitudinal beam middle section, after avoidance of the longitudinal beam is easy to crush after collision, abnormal bending is caused, energy absorption and survival space is affected, and the longitudinal beam is designed, the longitudinal beam middle section is designed, the inner wall of the longitudinal beam middle section is structurally, and the longitudinal beam middle section is added, the reinforcing structure, and the reinforcing structure is improved, and the collision resistance and the energy absorption and the normal is improved, and the collision resistance and the energy is improved.
The girder middle section fagging 400 of this embodiment is last to be equipped with girder reinforcing plate 500, girder reinforcing plate 500 and girder middle section body 100 fixed connection, if not set up girder reinforcing plate 500, the girder middle section that is located in girder middle section body 100 goes up reinforcing plate 200, girder middle section down reinforcing plate 300 and girder middle section fagging 400 strengthen the position and mainly be located the lower half region of girder middle section body 100, strengthen inhomogeneous, girder middle section body 100's upper segment intensity is poor, whole deformability is poor, and adopted the structure of this design, set up girder reinforcing plate 500 in girder middle section fagging 400 top, girder reinforcing plate 500 has strengthened the intensity of the upper segment of girder middle section body 100, the intensity structure of whole device has been improved.
The girder middle section body 100 and the girder reinforcing plate 500 of this embodiment form a closed space, the girder middle section upper reinforcing plate 200, the girder middle section lower reinforcing plate 300 and the girder middle section supporting plate 400 are all located in the closed space, and the girder reinforcing plate 500 protects the inside girder middle section supporting plate 400 by the structure of this design, and deformation failure is easy to occur after the supporting plate is pressed.
The girder middle section fagging 400 of this embodiment is perpendicular with girder middle section body 100, and the structure of this design, mutually perpendicular's design makes this girder middle section body 100 all stronger anti deformability again in the horizontal direction, supports each other between girder middle section body 100 and the girder middle section fagging 400 simultaneously, improves collision energy absorption, has further ensured passenger living space in the car.
The fixed knot of this embodiment constructs 410 and is including being located the fixed plate 411 that the side is parallel to each other and being located the top and with the fixed plate 411 of side perpendicular fixed plate 411, be located the fixed plate 411 of side and the fixed connection of reinforcing plate 200 inner wall laminating on the longeron middle section, the fixed plate 411 that is located the top and the fixed connection of longeron reinforcing plate 500 bottom laminating, the structure of this design, the fixed plate 411 of laminating with longeron reinforcing plate 500 bottom, support longeron reinforcing plate 500 and also support the reinforcing plate of both sides simultaneously, be located the both sides and the fixed plate 411 of reinforcing plate 200 inner wall laminating on the longeron middle section support reinforcing plate 200 on the longeron middle section, the stress surface has also been increased simultaneously, the anti deformability is improved.
The side walls of the girder middle section body 100, the girder middle section upper reinforcing plate 200 and the girder middle section lower reinforcing plate 300 of the embodiment are respectively provided with a plurality of connecting holes 110, and bolts are arranged in the connecting holes 110.
Example 2
Referring to fig. 1, 2, 3, 4, 5, 6 and 7, the manufacturing method of the automotive longitudinal beam structure according to the present embodiment is to assemble and weld the longitudinal beam middle section body 100, the longitudinal beam middle section upper reinforcing plate 200, the longitudinal beam middle section lower reinforcing plate 300, the longitudinal beam middle section supporting plate 400 and the longitudinal beam reinforcing plate 500 in sequence.
The manufacturing method of the present embodiment includes the steps of:
s100, the assembly is formed by connecting the upper reinforcing plate 200 at the middle section of the longitudinal beam and the middle supporting plate 400 of the longitudinal beam through two layers of spot welding;
s200, assembling, namely placing the lower reinforcing plate 300 of the middle section of the longitudinal beam into the middle section body 100 of the longitudinal beam, and then placing the assembly into the lower reinforcing plate 300 of the middle section of the longitudinal beam to form an assembly body;
s300, welding, namely connecting three movable parts of the assembly body in a three-layer spot welding mode;
s400, packaging, namely placing the longitudinal beam reinforcing plate 500 on the assembly, and connecting the longitudinal beam reinforcing plate 500 with the assembly and the longitudinal beam middle section body 100 by carbon dioxide arc welding and spot welding respectively.
The automobile longitudinal beam is manufactured by adopting the method, the local strength is improved, the structural defect of the longitudinal beam caused by avoiding wheel bags is improved, the overall rigidity matching relation is improved, the crushing rationality in the front collision process of the whole automobile is ensured, and the survival space of passengers is ensured.
The foregoing examples merely illustrate certain embodiments of the invention and are described in more detail and are not to be construed as limiting the scope of the invention; it should be noted that it is possible for a person skilled in the art to make several variants and modifications without departing from the concept of the invention, all of which fall within the scope of protection of the invention; accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (6)
1. An automobile longitudinal beam structure, which is characterized in that: including longeron middle section body, longeron middle section upper reinforcement plate and longeron middle section reinforcing plate down, the cross-section of reinforcing plate and longeron middle section lower reinforcement plate is U type structure on longeron middle section body, the inner wall of longeron middle section body and the outer wall laminating fixed connection of reinforcing plate down in the longeron middle section, the inner wall of reinforcing plate down and the outer wall laminating fixed connection of reinforcing plate on the longeron middle section, be equipped with longeron middle section fagging in the longeron middle section on the reinforcing plate, longeron middle section fagging is U type structure, longeron middle section fagging both ends are equipped with fixed knot constructs, fixed knot constructs including a plurality of mutually perpendicular's fixed plates, be equipped with the longeron reinforcing plate on the longeron middle section fagging, longeron reinforcing plate and longeron middle section body fixed connection, longeron middle section body and longeron reinforcing plate constitute airtight space, longeron middle section upper reinforcement plate, longeron middle section lower reinforcement plate and longeron middle section fagging all are located airtight space, longeron middle section body, longeron reinforcing plate, longeron middle section fagging, longeron middle section are located same vertical plane down.
2. An automotive rail structure according to claim 1, characterized in that: and the longitudinal beam middle section supporting plate is perpendicular to the longitudinal beam middle section body.
3. An automotive rail structure according to claim 1, characterized in that: the fixed knot constructs including being located the fixed plate that the side is parallel to each other and being located the top and with the fixed plate vertically fixed plate of side, the fixed plate that is located the side and the reinforcing plate inner wall laminating fixed connection on the longeron middle section, the fixed plate that is located the top and longeron reinforcing plate bottom laminating fixed connection.
4. An automotive rail structure according to claim 1, characterized in that: and a plurality of connecting holes are formed in the side walls of the longitudinal beam middle section body, the longitudinal beam middle section upper reinforcing plate and the longitudinal beam middle section lower reinforcing plate, and bolts are arranged in the connecting holes.
5. The manufacturing method of the automobile longitudinal beam structure based on any one of claims 1-4 is characterized by comprising the following steps: the manufacturing method comprises the steps of sequentially assembling, welding and connecting a longitudinal beam middle section body, a longitudinal beam middle section upper reinforcing plate, a longitudinal beam middle section lower reinforcing plate, a longitudinal beam middle section supporting plate and a longitudinal beam reinforcing plate.
6. The method of manufacturing an automotive rail structure of claim 5, wherein: the manufacturing method comprises the following steps:
s100, the assembly is formed by connecting an upper reinforcing plate in the middle section of the longitudinal beam and a supporting plate in the middle section of the longitudinal beam through two layers of spot welding;
s200, assembling, namely placing the lower reinforcing plate of the middle section of the longitudinal beam into the main body of the middle section of the longitudinal beam, and then placing the assembly into the lower reinforcing plate of the middle section of the longitudinal beam to form an assembly body;
s300, welding, namely connecting three movable parts of the assembly body in a three-layer spot welding mode;
s400, packaging, namely placing the longitudinal beam reinforcing plate on the assembly, and connecting the longitudinal beam reinforcing plate with the assembly and the longitudinal beam middle section body by adopting carbon dioxide arc welding and spot welding respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910928440.6A CN110588784B (en) | 2019-09-28 | 2019-09-28 | Automobile longitudinal beam structure and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910928440.6A CN110588784B (en) | 2019-09-28 | 2019-09-28 | Automobile longitudinal beam structure and manufacturing method thereof |
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| CN110588784A CN110588784A (en) | 2019-12-20 |
| CN110588784B true CN110588784B (en) | 2023-08-29 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110588803A (en) * | 2019-08-23 | 2019-12-20 | 浙江飞碟汽车制造有限公司 | Deformation-preventing automobile floor longitudinal beam and energy absorption mode thereof |
| CN111266806B (en) * | 2020-03-02 | 2021-04-06 | 恒大恒驰新能源汽车科技(广东)有限公司 | Method for processing longitudinal beam component |
| CN113830187A (en) * | 2021-10-27 | 2021-12-24 | 一汽解放汽车有限公司 | Rear longitudinal beam assembly, welding method and automobile |
| CN115041796A (en) * | 2022-06-30 | 2022-09-13 | 东风柳州汽车有限公司 | Welding method and welding device for automobile longitudinal beam structure |
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