CN113306628A - Aluminum alloy frame combined longitudinal beam - Google Patents
Aluminum alloy frame combined longitudinal beam Download PDFInfo
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- CN113306628A CN113306628A CN202110541662.XA CN202110541662A CN113306628A CN 113306628 A CN113306628 A CN 113306628A CN 202110541662 A CN202110541662 A CN 202110541662A CN 113306628 A CN113306628 A CN 113306628A
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- longitudinal beam
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- alloy frame
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D27/00—Connections between superstructure or understructure sub-units
- B62D27/02—Connections between superstructure or understructure sub-units rigid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D29/00—Superstructures, understructures, or sub-units thereof, characterised by the material thereof
- B62D29/008—Superstructures, understructures, or sub-units thereof, characterised by the material thereof predominantly of light alloys, e.g. extruded
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
- B60K2001/0405—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion characterised by their position
- B60K2001/0438—Arrangement under the floor
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Body Structure For Vehicles (AREA)
Abstract
The combined longitudinal beam of the aluminum alloy frame consists of a front longitudinal beam, a rear longitudinal beam and a connecting insertion plate, wherein the front longitudinal beam and the rear longitudinal beam are offset in a transverse staggered mode, a section of overlapping combination area is formed in the longitudinal direction, and two side edges of the upper connecting insertion plate and the lower connecting insertion plate are respectively inserted into connecting grooves in the side faces of the front longitudinal beam and the rear longitudinal beam in the overlapping area and are welded and fixed to form the combined longitudinal beam. The invention adopts the combination structure of two longitudinal beams for connection, and after the combination structure is further combined with the battery compartment on the frame, the whole structure has high rigidity and simple manufacture, and the offset distance between the front longitudinal beam and the rear longitudinal beam can be flexibly adjusted to adapt to different chassis plate spring positions.
Description
Technical Field
The invention relates to the technical field of new energy automobile manufacturing, in particular to an aluminum alloy frame combined longitudinal beam.
Background
The frame is generally comprised of side rails and cross rails, which are then riveted or welded together to form a rigid frame. In a traditional steel structure frame, longitudinal beams mainly take a groove-shaped or box-shaped section as a main part, penetrate through the whole vehicle body in the length direction, and can be made into a bent shape in a horizontal plane or a longitudinal plane according to the requirements of other assembly parts.
In the field of new energy automobiles, an aluminum alloy frame can be designed for reducing the weight of the frame, wherein the aluminum alloy frame comprises aluminum alloy longitudinal beams. Although the elastic modulus of the aluminum alloy is only one third of that of steel, the aluminum alloy has obvious advantage of light weight, but also has the following disadvantages: 1) the aluminum alloy has large specific strength but small specific rigidity, and in order to obtain good rigidity, the section of the section must be reasonably designed, and the height dimension of the section is improved; 2) the aluminum alloy section is difficult to bend, and particularly the aluminum alloy section with a large section is difficult to bend; 3) the aluminum alloy is not easy to weld, and the welding is reduced as much as possible, so that the damage of the welding to the material performance is reduced.
The following publications are found in relation to aluminum alloy side members for vehicles: keyword, longitudinal beam, aluminum alloy and combination
1. A two-longitudinal four-transverse aluminum alloy frame structure and an automobile; application No.: CN 201821389751.7; the applicant: wuhan Intelligent control Industrial technology research institute, Inc.; abstract: a two-longitudinal-four-transverse aluminum alloy frame structure and an automobile belong to the technical field of automobiles. The aluminum alloy frame structure with two longitudinal beams and four transverse beams comprises two longitudinal beams and four combined transverse arms. The two longitudinal beams are arranged in bilateral symmetry. Four combination xarm from the front to back in proper order mortise-tenon joint on the longeron. The automobile comprises the aluminum alloy frame structure with two longitudinal sides and four transverse sides. The aluminum alloy frame structure with two longitudinal sides and four transverse sides has the advantages that the aluminum alloy frame structure with two longitudinal sides and four transverse sides is light in weight, good overall rigidity and strength are guaranteed, the aluminum alloy frame structure is easy to manufacture, and an aluminum alloy chassis hard spot system is easy to install. The automobile has high light weight.
2. An aluminum alloy automobile chassis hard spot system and an automobile; application No.: CN 201810985616.7; the applicant: wuhan intelligent control Industrial technology research institute, Inc., abstract: an aluminum alloy automobile chassis hard spot system and an automobile belong to the technical field of automobiles. The device comprises a frame, a front plate spring front support, a front plate spring rear support, a rear plate spring front support, a rear plate spring rear support, a motor hard point support and a steering hard point support. The frame comprises a left longitudinal beam, a right longitudinal beam, a first combined cross arm, a second combined cross arm, a third combined cross arm and a fourth combined cross arm, wherein the four cross arms are sequentially connected in a mortise-tenon manner from front to back and are fixed on the left longitudinal beam and the right longitudinal beam. The front support of the front leaf spring is connected with the first combined cross arm. And the rear support of the front plate spring is connected with the second combined cross arm. The front support of the rear plate spring is connected with the third combined cross arm. And the rear seat of the rear plate spring is connected with the fourth combined cross arm. The motor hard point support is fixed between the left longitudinal beam and the right longitudinal beam. The motor hard point support is fixed on the left longitudinal beam or the right longitudinal beam. The hard spot system of the aluminum alloy automobile chassis realizes light weight and has good hard spot rigidity and strength.
3. A pure electric vehicle chassis system adopting a lightweight passenger car chassis structure; application No.: CN 201410847147.4; the applicant: dongguan Zhongshan university research institute, Dongguan Sanxin electric automobile technology Co., Ltd, abstract: a pure electric vehicle chassis system adopting a light-weight passenger car chassis structure comprises two longitudinal girders and a plurality of cross beams, wherein the cross beams are distributed on different height layers and different longitudinal positions of the two longitudinal girders, and the cross beams are in tenon joint with the two longitudinal girders to form a double-longitudinal-beam multilayer chassis frame stressed integrally; the front part of the double-longitudinal-beam multilayer chassis frame is connected with a front bridge, and the front bridge is fixed through two longitudinal beams; the rear part of the double-longitudinal-beam multilayer chassis frame is connected with a rear bridge; the rear bridge frame is fixed through two longitudinal girders; the front bridge frame is connected with a front axle assembly, the rear bridge frame is connected with a rear axle assembly, the double-longitudinal-beam multi-layer chassis frame is provided with a driving assembly and an energy assembly, the integral structure rigidity of the longitudinal girder is good, the assembling process of the front bridge frame, the rear bridge frame and the chassis frame is simplified, the connection is firm, the integral stress is realized, the multi-layer floor structure design is convenient for the installation of batteries and motors, and the chassis space is saved.
4. A lightweight frame that mimics the topology of a honeycomb structure; application No.: CN 202010828647.9; the applicant: huazhong university of science and technology, Nanning Hua digital lightweight electric vehicle design institute, Inc., abstract: the utility model provides a lightweight frame of imitative honeycomb structure topology which characterized in that: the device comprises two boundary beams, at least one longitudinal beam and at least two middle cross beams; the longitudinal beam is positioned between the two edge beams, two ends of the middle cross beam are respectively in joggle joint with the edge beams, and the middle part of the middle cross beam is in joggle joint with the longitudinal beam; the side beams, the longitudinal beams and the middle cross beam respectively comprise webs with I-shaped middle sections, and upper pipes and lower pipes with rectangular upper end sections and rectangular lower end sections; the side beams, the longitudinal beams and the middle cross beam form a battery compartment which can be used for accommodating a storage battery. The vehicle frame adopting the multi-cabin honeycomb structure is light in weight, has high strength and rigidity, and can realize double functions of bearing and reducing weight.
The above prior generation designs for the applicant and the related development and design units, wherein the longitudinal beams are all integrally designed, and the two integral longitudinal beams are arranged in parallel. Due to the fact that the distances between the plate springs of the front axle and the rear axle of the chassis are different, the hard points of the plate springs cannot be installed on the longitudinal beam at the same time. In order to accommodate different leaf spring moments, the above-mentioned patents take measures to separate the hard spots from the stringers. Patent 1, 2 have designed the combination crossbeam, and patent 4 has designed integral crossbeam, provides the leaf spring hard spot according to the position requirement of leaf spring on the outside of longeron, combination crossbeam or integral crossbeam. This solution has 2 major disadvantages: 1) the combined cross beam and the hard spot structure are complex, so that the manufacturing complexity of the frame is increased; 2) the periphery of the hard point has a plurality of structures, so that the assembling space of the hard point structure and the assembling space of the chassis plate spring system are narrow, and the assembling operation is difficult. Patent 3 provides the leaf spring hard spot through the preceding, the back crane span structure of steel, assembles preceding back crane span structure on the girder earlier, though the hard spot structure is simple relatively, does not realize the all aluminum alloying of frame, and steel preceding back crane span structure and hard spot are perishable, and weight is also bigger partially. In addition, in order to provide a good structural foundation for the combined beam and the front and rear bridges, the cross section of the beam is designed to be L-shaped or C-shaped, a plurality of cavities are formed in the cross section of the sectional material, the shape is complex, and the manufacturing difficulty of the sectional material is improved.
In addition, there are also relevant publications as follows:
5. a semi-trailer gooseneck type combined welding aluminum alloy longitudinal beam; application No.: CN 201410834985.8; the applicant: liaoning loyalty-vigorous Special vehicle manufacturing company, abstract: the utility model discloses a semitrailer gosling formula combination welding aluminum alloy longeron, including preceding entablature, well neck roof beam and back underbeam, preceding entablature is two web I-beams, including preceding upper wing board, preceding two webs and preceding underbeam, well neck roof beam includes two piece at least parallel arrangement's class right angled triangle web, the back underbeam is the I-beam, including back upper wing board, back web and back underbeam, the right-angle side I and the II of well neck roof beam respectively with preceding end face welded fastening of preceding underbeam and back underbeam, preceding entablature end be equipped with back underbeam front end complex breach, preceding entablature and back underbeam pass through cooperation breach welded fastening. The aluminum alloy longitudinal beam of the semitrailer has a three-section structure, so that the structural strength can be enhanced, the manufacturing cost of products can be reduced, and the driving safety can be improved.
In the above documents, a plurality of sections of aluminum profiles are adopted for end-to-end welding to form a combined longitudinal beam structure of an upper beam, a middle neck beam and a rear lower beam with a plurality of sections, so that the extrusion sectional area of the aluminum profiles can be reduced, the total weight can be reduced, the tonnage of an extruder can be reduced, and the effect of reducing the production cost can be achieved.
However, the above technical solutions have the following disadvantages: the large-area thermal welding is carried out on the joint of the aluminum alloy section, the metal structure of the aluminum alloy is inevitably changed at the welding position, the crystal grains are thick, the mechanical property loss of the welding position is at least more than 40 percent, the stress of the whole structure of the longitudinal beam is not facilitated, and the phenomena of stress concentration, weld joint cracking and the like are easily caused; in addition, the scheme also needs to manufacture a plurality of sets of extrusion dies for production and use, which is undoubtedly not beneficial to reducing the cost to a certain extent.
Disclosure of Invention
The aluminum alloy frame combined longitudinal beam is formed by combining two longitudinal beams which are transversely offset and longitudinally provided with a certain overlapping area, and the transverse offset distance of the front longitudinal beam and the rear longitudinal beam is adjusted to adapt to different widths of the front leaf spring and the rear leaf spring, so that the difficulty in bending and forming the integral aluminum alloy frame is avoided, the production efficiency is improved, the production cost is reduced, and the mechanical property of the combined longitudinal beam is ensured.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the combined longitudinal beam of the aluminum alloy frame consists of a front longitudinal beam, a rear longitudinal beam and a connecting insertion plate, wherein the front longitudinal beam and the rear longitudinal beam are offset in a transverse staggered mode, a section of overlapping combination area is formed in the longitudinal direction, and the two side edges of the upper connecting insertion plate and the lower connecting insertion plate are respectively inserted into connecting insertion plate grooves in the side faces of the front longitudinal beam and the rear longitudinal beam in the overlapping area and are welded and fixed to form the combined longitudinal beam.
And the overlapping connection part of the front longitudinal beam and the rear longitudinal beam is provided with a connection plugboard, and the end parts of the two side surfaces of the connection plugboard are respectively and fixedly connected with the side surfaces of the front longitudinal beam and the rear longitudinal beam. On the basis, a connecting inserting plate is additionally arranged between the front longitudinal beam and the rear longitudinal beam, connecting nodes between the front longitudinal beam and the rear longitudinal beam are further increased, in actual production, after the front longitudinal beam and the rear longitudinal beam are produced to the fixed length, the front longitudinal beam and the rear longitudinal beam are fixed and positioned by the connecting inserting plate to form a combined longitudinal beam, and then the combined longitudinal beam is connected with the cross beam, the battery tunnel cavity and the like.
The overlapping combination area of the front longitudinal beam and the rear longitudinal beam is at least provided with a group of battery compartment preformed holes, and the battery compartment is in tenon-and-mortise matched connection with the front longitudinal beam and the rear longitudinal beam through the preformed holes.
The front longitudinal beam and the rear longitudinal beam form a main structure topology mainly through the connection effect of the battery bin, the main structure topology has very strong rigidity and torsion resistance, and the section structure of the section is reasonable and easy to produce; secondly, the distance between two rear longitudinal beams of the combined longitudinal beam can be adjusted within a certain range, so that the adaptability adjustment of the mounting positions of the plate spring supports and other hard point supports on the longitudinal beam is greatly facilitated, the longitudinal beam does not need to be bent, and the manufacturing cost of the frame is greatly reduced.
The front longitudinal beam and the rear longitudinal beam are multi-cavity aluminum profiles with the same cross section, the side surfaces of the cavities at the top and the bottom are provided with connecting plugboard grooves, and the connecting plugboards and the grooves are fixed at the edges through welding. The multi-cavity aluminum profile is of a structure similar to a double-web rod, and the web plates are connected and reinforced by the partition plates between the cavities, so that the longitudinal beam profile has stronger compression resistance and torsion resistance, and the overall rigidity of the longitudinal beam is ensured.
And in the cavities of the front longitudinal beam and the rear longitudinal beam, a plurality of reinforcing ribs are arranged on two sides of the long cavity. The reinforcing ribs can further improve the stress condition of the side wall of the long cavity and improve the bending resistance of the longitudinal beam.
The front longitudinal beam and the rear longitudinal beam are provided with through holes for the cross beam, the longitudinal beam and the cross beam are connected by adopting a tenon penetrating structure, the cross section of the cross beam profile is provided with the same connecting inserting plate groove, the connecting inserting plate groove is connected with the triangular inserting plate, and the connecting edge is fixed by welding. The longitudinal beams and the cross beams are mutually supported and connected through tenon penetrating structures to form a longitudinal and transverse frame structure for supporting the floor of a vehicle.
The invention has the advantages that:
1. according to the two-section combined structure of the longitudinal beam structure, the integral longitudinal beam is divided into the longitudinal beams with the front end and the rear end provided with the overlapped areas and connected, and the front end and the rear end are directly matched with different widths of the front leaf spring and the rear leaf spring, so that the hard points of the leaf springs are directly arranged on the longitudinal beam, and the bearing capacity of a frame is improved. The distance between the front longitudinal beam and the rear longitudinal beam can be flexibly adjusted, so that the application range of the combined longitudinal beam is very flexible.
2. The combined longitudinal beam can avoid bending and forming manufacture by using a single longitudinal beam section, and avoids the defects of high processing cost and low yield caused by bending the section.
3. The connecting edges of the longitudinal beam and the upper and lower rib plates of the combined longitudinal beam structure are longer, and the combined longitudinal beam structure is further combined with the battery compartment in the frame, so that the combined longitudinal beam structure has higher bending resistance and torsion resistance, and is beneficial to improving the integral structural rigidity of the frame.
4. The combined longitudinal beam structure is relatively simple in process in the actual production process, and improves the assembly efficiency of the frame.
Description of the drawings:
FIG. 1 is a view showing the structure of the external appearance of the present invention;
FIG. 2 is a view showing the structure of the vertical surface of the battery compartment combined with the present invention (two combined longitudinal beams + two battery compartments);
FIG. 3 is a front view structural diagram of the present invention;
FIG. 4 is a sectional view taken along line A-A in FIG. 3;
FIG. 5 is an enlarged view of the structure at II in FIG. 3;
FIG. 6 is a view of the structure of the present invention;
FIG. 7 is an enlarged view of the point I in FIG. 6;
the number designations in the figures are: 1. a front longitudinal beam; 2. a rear stringer; 3. connecting the plugboards; 4. a cross beam; 5. a battery compartment preformed hole; 6. and a battery compartment.
Detailed Description
Example 1
The combined longitudinal beam of the aluminum alloy frame consists of a front longitudinal beam 1, a rear longitudinal beam 2 and a connecting inserting plate 3, wherein the front longitudinal beam 11 and the rear longitudinal beam 12 are staggered and offset in the transverse direction, and form an overlapped combined area in the longitudinal direction, and the two side edges of the upper connecting inserting plate and the lower connecting inserting plate 3 are respectively inserted into connecting inserting plate grooves on the side surfaces of the front longitudinal beam 1 and the rear longitudinal beam 2 in the overlapped area and are welded and fixed to form the combined longitudinal beam;
a group of battery compartment preformed holes 5 are arranged in the overlapping combination area of the front longitudinal beam 1 and the rear longitudinal beam 2, and the battery compartment 6 is in mortise-tenon joint fit connection with the front longitudinal beam 1 and the rear longitudinal beam 2 through the preformed holes;
the front longitudinal beam 1 and the rear longitudinal beam 2 are multi-cavity aluminum profiles with the same cross section, the side surfaces of the cavities at the top and the bottom are provided with connecting flashboard grooves, and the connecting flashboards 3 are fixed with the grooves at the connecting edges through welding;
in the cavities of the front longitudinal beam 1 and the rear longitudinal beam 2, a plurality of reinforcing ribs are arranged on two sides of a long cavity;
the front longitudinal beam 1 and the rear longitudinal beam 2 are provided with through holes of the cross beam 4 in advance, the longitudinal beams are connected with the cross beam 4 through tenon penetrating structures, the cross section of the cross beam 4 is provided with the same connecting plug board groove, the same connecting plug board groove is connected with the end edge of the connecting plug board 3, and the connecting plug board groove is fixed at the edge by welding.
Example 2
The difference from the embodiment 1 is that: two groups of battery compartment preformed holes 5 are arranged in the overlapping combination area of the front longitudinal beam 1 and the rear longitudinal beam 2, and the two battery compartments 6 are respectively in mortise-tenon matched connection with the front longitudinal beam 11 and the rear longitudinal beam 12 through the preformed holes.
The application example is as follows:
the aluminum profile is processed and manufactured by using 6005A-T6 materials, the total length of the combined longitudinal beam is 5800mm, the length of the front longitudinal beam is 3000mm, the length of the rear longitudinal beam is 4300mm, and the length of the combined part of the front longitudinal beam and the rear longitudinal beam is 1300 mm;
comparative example: the longitudinal beam with the same longitudinal beam cross section through length 6000 mm:
and (3) extrusion process yield: the total weight of the aluminum ingot put in/the weight of the final product aluminum material is 100 percent.
The reason is that after the section is cut to length and shortened, the length of the cast ingot is more flexibly calculated in production, the range of the length of the cast ingot can be adjusted to be wider, and then the longer aluminum cast ingot is used to enter an extruder for extrusion production, so that the residual total weight of the extruded cast ingot is reduced; secondly, after the extruded section is cut to length, if a defect (collision damage and the like) is generated at a certain position in the production process, the original section with the length of 4300mm can be changed into the section with the length of 3000mm, or the defect position is avoided, and the rest length is flexibly cut into the section suitable for length.
Application example 2:
the aluminum profile in the embodiment 1 of the invention is processed and manufactured by using 6005A-T6 materials, the total length of the combined longitudinal beam is 5800mm, the length of the front longitudinal beam is 3000mm, the length of the rear longitudinal beam is 4300mm, and the length of the combined part of the front longitudinal beam and the rear longitudinal beam is 1300 mm; the distance between the two front longitudinal beams is 673mm, and the distance between the two rear longitudinal beams is 1138 mm.
Comparative example: a single section is adopted for roll bending forming, the distance between the front parts of two longitudinal beams is 673mm, the distance between the rear parts of the longitudinal beams is 1138mm, the three-roller roll bending machine rolls, and the middle parts of the longitudinal beams are rolled and bent to form an S shape. The length of the section bar is 6000mm, and the roll bending die cost is 30 ten thousand yuan/sleeve.
Comparing a single roll-bend frame rail with the combination rail of the invention: the meter weight of the longitudinal beam profile is as follows: 7.283kg/m of the total weight of the mixture,
note: the cost comprises material cost, extrusion production cost, machining cost and section roll bending cost, and the roll bending die flattening cost is not included.
It can be seen that, after calculating the roll bending cost, the manufacturing cost of the roll bending stringer is still slightly higher than the combined stringer cost, and the flattening cost of the roll bending die is not calculated yet.
The roll-bent longitudinal beam of the comparative example and the combined longitudinal beam of the example 1 of the invention are added with other rod pieces to form a frame, and then a twist resistance test is carried out:
the torsional rigidity test process follows an experimental method in the 'test method for torsional rigidity of white car body of common passenger car' in the draft of solicitation in 2020:
the test device meets the requirements of JB/T7974-1999, a body in white and a simulated suspension are hinged by adopting a ball, 20 test points are symmetrically arranged at the bottom of the body in left and right, and the maximum loading load is one fourth of the maximum loading load of the whole vehicle;
loading to the maximum load along a pointer, unloading, anticlockwise loading to the maximum load, unloading, standing to eliminate elastic deformation, clockwise loading to the maximum load by 30 percent, unloading, anticlockwise loading to the maximum load by 30 percent, unloading, standing to eliminate elastic deformation, clockwise graded loading, unloading to eliminate elastic deformation, anticlockwise loading to the maximum load by 30 percent, unloading, anticlockwise graded loading, unloading to eliminate elastic deformation, repeating the step 6-16 for a plurality of times, at least 2 times.
Calculating the formula: torsional stiffness = absolute value of load borne by the vehicle body/difference in torsion angle across front and rear suspension cross-sections
As can be seen, the frame using the combination side member is slightly heavier in weight than the bent side member frame, but is greatly improved in twisting resistance.
Claims (5)
1. Aluminum alloy frame combination formula longeron, its characterized in that: the combined longitudinal beam is composed of a front longitudinal beam (1), a rear longitudinal beam (2) and a connecting inserting plate (3), wherein the front longitudinal beam (11) and the rear longitudinal beam (12) are offset in a transverse staggered mode, a section of overlapping combination area is formed in the longitudinal direction, and the two side edges of the upper connecting inserting plate and the lower connecting inserting plate (3) are respectively inserted into connecting inserting plate grooves in the side faces of the front longitudinal beam (1) and the rear longitudinal beam (2) in the overlapping area and are welded and fixed to form the combined longitudinal beam.
2. The aluminum alloy frame combined longitudinal beam of claim 1, wherein: the overlapping combination area of the front longitudinal beam (1) and the rear longitudinal beam (2) is at least provided with a group of battery compartment preformed holes (5), and the battery compartment (6) is in tenon-and-mortise matched connection with the front longitudinal beam (1) and the rear longitudinal beam (2) through the preformed holes.
3. The aluminum alloy frame combined longitudinal beam of claim 1, wherein: front longitudinal beam (1) and back longeron (2) are the same multi-chamber aluminium alloy in cross-section, and its top and cavity side below set up the connection picture peg groove, connect between picture peg (3) and the groove through welded connection edge fixed.
4. The aluminum alloy frame combined longitudinal beam of claim 1, wherein: in the cavities of the front longitudinal beam (1) and the rear longitudinal beam (2), a plurality of reinforcing ribs are arranged on two sides of the long cavity.
5. The aluminum alloy frame combined longitudinal beam of claim 1, wherein: the front longitudinal beam (1) and the rear longitudinal beam (2) are provided with through holes of the cross beam (4), the longitudinal beam and the cross beam (4) are connected through a tenon penetrating structure, the section of the cross beam (4) is provided with the same connecting plug board groove, the connecting plug board groove is connected with the end edge of the connecting plug board (3), and the connecting plug board groove is fixed at the edge by welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110541662.XA CN113306628A (en) | 2021-05-18 | 2021-05-18 | Aluminum alloy frame combined longitudinal beam |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110541662.XA CN113306628A (en) | 2021-05-18 | 2021-05-18 | Aluminum alloy frame combined longitudinal beam |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115320713A (en) * | 2022-08-24 | 2022-11-11 | 中国重汽集团济南动力有限公司 | Commercial car concatenation formula solebar and frame assembly |
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2021
- 2021-05-18 CN CN202110541662.XA patent/CN113306628A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115320713A (en) * | 2022-08-24 | 2022-11-11 | 中国重汽集团济南动力有限公司 | Commercial car concatenation formula solebar and frame assembly |
| CN115320713B (en) * | 2022-08-24 | 2023-11-03 | 中国重汽集团济南动力有限公司 | Commercial car concatenation formula frame longeron and frame assembly |
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