A vehicle frame system using internal high pressure forming, a vehicle and a forming process

Abstract

The application belongs to the field of automobile installation, and particularly relates to a frame system using internal high-pressure forming, an automobile and a forming process. The frame system is used for supporting a vehicle body system and connecting a chassis system, and comprises a front frame assembly, a middle frame assembly and a rear frame assembly which are connected in a length direction to form a three-section frame welding assembly. The front frame assembly, the middle frame assembly and the rear frame assembly each comprise a set of longitudinal beams which are arranged in parallel with each other and are sequentially inserted and welded by a carbon dioxide gas shield welding process. A plurality of cross beams are arranged between the set of longitudinal beams of the front frame assembly and the rear frame assembly in the length direction. The longitudinal beams and the cross beams are integrally formed by internal high-pressure forming, and the plurality of cross beams are fixed to the longitudinal beams by being matched through a through-insertion type of insertion and / or by additionally arranging connecting plates and being welded by the carbon dioxide gas shield welding process. The internal high-pressure forming technology is used to solve the problems of poor welding size matching, low welding efficiency and high welding cost of the longitudinal beams and the cross beams of the traditional cold stamping frame.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of automobile installation, and particularly relates to a frame system using internal high-pressure forming, an automobile and a forming process. BACKGROUND

[0002] The non-load-bearing automobile usually adopts a non-load-bearing body structure, and a frame system bears the body, a motor, a battery pack, an engine, a transmission, front and rear axles, suspensions and front and rear traction devices, and the frame is a bridge type structure crossing the chassis of the off-road vehicle and is the foundation and skeleton of the entire off-road vehicle.

[0003] The frame functions to fix various assemblies to keep correct relative positions and meet requirements of overall vehicle layout, vehicle load capacity, man-machine layout and the like. The non-load-bearing automobile is usually used in relatively poor road conditions and needs to run on graded roads, rural dirt roads and roadless areas such as undulating, muddy, snowy, sandy and jungle roads, and the structural strength of the frame is required to be very high.

[0004] The structural design of the frame needs to meet practicability and reliability, be easy to manufacture and have good economy. The frame is an important component of the non-load-bearing automobile, and the selection of the frame structure is related to the achievement of various performances of the non-load-bearing automobile. The frame usually adopts a ladder frame structure form. The future development trend of the non-load-bearing automobile frame is simple structure, lightweight, low material cost and strength and stiffness capable of meeting use requirements.

[0005] The existing non-load-bearing automobile frame assembly meets the above trend in terms of structure and material, but it is very difficult to meet the design requirements in terms of strength and stiffness on the basis of feasible layout. The non-load-bearing automobile frame needs to meet the high passability requirements of the entire vehicle and layout requirements, and it is difficult to ensure simple structure and meet harsh working conditions when running on unpaved roads to achieve strength and stiffness, which is a problem to be solved by those skilled in the art. SUMMARY

[0006] In view of the above problems, the application provides a frame system using internal high-pressure forming, an automobile and a forming process for supporting a body system and connecting a chassis system, which comprises a front frame assembly, a middle frame assembly and a rear frame assembly, and is connected in a length direction to form a three-section frame welding assembly;

[0007] The front frame assembly, the middle frame assembly and the rear frame assembly each comprise a group of longitudinal beams arranged in parallel with each other and sequentially inserted in the length direction and welded by a carbon dioxide gas shielded welding process.

[0008] A plurality of cross beams are arranged between a set of longitudinal beams in the front frame assembly and the rear frame assembly along the length direction, the cross beams and the longitudinal beams are integrally formed by internal high pressure, and the plurality of cross beams are fixed to the longitudinal beams by through-type plug-in matching and / or additional connecting plates and are welded by a carbon dioxide gas shielded welding process.

[0009] Preferably, the front frame assembly includes a set of front frame longitudinal beam bodies arranged in parallel with each other, and a front trailer cross beam assembly, a front lower fork arm front cross beam assembly, a front lower fork arm rear cross beam assembly, a transmission suspension mounting cross beam assembly, and a battery protection front cross beam body are sequentially connected between the set of front frame longitudinal beam bodies along the length direction, wherein,

[0010] The front trailer cross beam assembly includes a front trailer hook cross beam body, the bottom end of the set of front frame longitudinal beam bodies is welded with front trailer hook cross beam connecting plates by a carbon dioxide gas shielded welding process, and the two ends of the front trailer hook cross beam body are respectively plugged into a set of front trailer hook cross beam connecting plates by a through-type plug-in matching and are welded by a carbon dioxide gas shielded welding process.

[0011] The front lower fork arm front cross beam assembly and the front lower fork arm rear cross beam assembly each include a first cross beam body and a set of first connecting plates, the first cross beam body is configured in a U-shaped bracket structure, the top end of the first cross beam body is welded with the set of first connecting plates by a carbon dioxide gas shielded welding process, and the other end of the set of first connecting plates is respectively welded with the set of front frame longitudinal beam bodies by a carbon dioxide gas shielded welding process.

[0012] The transmission suspension mounting cross beam assembly includes a transmission suspension mounting cross beam body and a transmission suspension mounting cross beam connecting plate, the transmission suspension mounting cross beam body is configured in a U-shaped bracket structure, the top end of the U-shaped bracket is respectively welded with the set of front frame longitudinal beam bodies by a carbon dioxide gas shielded welding process, and the bottom end of the U-shaped bracket is welded with a set of cross beam connecting plates by a carbon dioxide gas shielded welding process; the two ends of the transmission suspension mounting cross beam connecting plate are respectively welded with the transmission suspension mounting cross beam body and the front frame longitudinal beam body by a carbon dioxide gas shielded welding process.

[0013] The two ends of the battery protection front cross beam body are overlapped with the set of front frame longitudinal beam bodies and are welded by a carbon dioxide gas shielded welding process.

[0014] The set of front frame longitudinal beam bodies, the front trailer hook cross beam body, the first cross beam body, the transmission suspension mounting cross beam body, and the battery protection front cross beam body are integrally formed by internal high pressure.

[0015] Preferably, the middle frame assembly includes a set of middle frame longitudinal beam bodies, which are respectively plugged with the set of front frame longitudinal beam bodies along the length direction and are welded by a carbon dioxide gas shielded welding process, and the set of middle frame longitudinal beam bodies are integrally formed by high pressure.

[0016] Preferably, the rear frame assembly comprises a set of rear frame longitudinal beam bodies arranged in parallel with each other, the rear frame longitudinal beam bodies are respectively inserted into the set of middle frame longitudinal beam bodies along the length direction and welded by the carbon dioxide gas shield welding process, and the rear frame longitudinal beam bodies are sequentially connected along the length direction with the oil tank mounting front cross beam assembly, the oil tank mounting rear cross beam assembly, the gas tank mounting cross beam assembly, the air pump mounting cross beam assembly and the rear anti-collision beam assembly, wherein,

[0017] The oil tank mounting front cross beam assembly and the air pump mounting cross beam assembly each comprise a second cross beam body, and the two ends of the second cross beam body are respectively inserted into the set of rear frame longitudinal beam bodies in a through-inserting manner and welded by the carbon dioxide gas shield welding process.

[0018] The oil tank mounting rear cross beam assembly comprises an oil tank mounting rear cross beam body, the oil tank mounting rear cross beam body is configured in a U-shaped structure, the top end of the oil tank mounting rear cross beam body is respectively overlapped with one end of the set of oil tank mounting rear cross beam connecting plates and welded by the carbon dioxide gas shield welding process, and the other end of the set of oil tank mounting rear cross beam connecting plates extends to the inner edge surface of the rear frame longitudinal beam body and welded by the carbon dioxide gas shield welding process.

[0019] The gas tank mounting cross beam assembly comprises a gas tank mounting cross beam body, the two ends of the gas tank mounting cross beam body are respectively inserted into the set of rear frame longitudinal beam bodies in a through-inserting manner, and the inserted parts are arranged in a surrounding manner with the gas tank mounting cross beam connecting plates in an L-shaped cross section, and the connecting surfaces are welded by the carbon dioxide gas shield welding process.

[0020] The rear anti-collision beam assembly comprises a rear anti-collision beam cross beam body, the two ends of the rear anti-collision beam cross beam body are respectively inserted into the set of rear frame longitudinal beam bodies in a through-inserting manner, and the two side corners formed are respectively arranged with the rear anti-collision beam cross beam connecting inner plates and the rear anti-collision beam cross beam connecting outer plates in an inclined manner, and the plate surfaces sequentially extend and are attached to the rear frame longitudinal beam body and the rear anti-collision beam cross beam body and welded by the carbon dioxide gas shield welding process.

[0021] The set of rear frame longitudinal beam bodies, the second cross beam body, the oil tank mounting rear cross beam body, the gas tank mounting cross beam body and the rear anti-collision beam cross beam body are all integrally formed by the inner high pressure.

[0022] Preferably, the front frame assembly further comprises a front trailer hook, a front anti-collision beam mounting plate and a front shock tower mounting plate, wherein,

[0023] The front end surface of the front trailer hook cross beam connecting plate is taken as the front, the front end surface of the front trailer hook cross beam connecting plate is connected with the front trailer hook, the front end surface of the front frame longitudinal beam body is connected with the front anti-collision beam mounting plate, and the outer side wall of the front frame longitudinal beam body is connected with the front shock tower mounting plate.

[0024] Preferably, the middle frame assembly further comprises a battery pack mounting plate, the group of frame middle longitudinal beam bodies are expanded into closed ring-shaped cross sections under high pressure, and the battery pack mounting plate is mounted in the ring cavity.

[0025] Preferably, the rear frame assembly further comprises an oil tank mounting limiting cross beam, a rear shock tower, a rear spring seat and a rear trailer hook, wherein,

[0026] The second cross beam body on the oil tank mounting front cross beam assembly is an oil tank mounting front cross beam body;

[0027] With the frame rear longitudinal beam body end face away from the front frame assembly as the back, the oil tank mounting limiting cross beams are two parallel beams, and the two ends are mounted on the oil tank mounting front cross beam body and the oil tank mounting rear cross beam body respectively, a group of frame rear longitudinal beam bodies are mounted on the outer middle part of the frame rear longitudinal beam bodies, and a rear shock tower is arranged behind the rear shock tower, a rear spring seat is arranged at the bottom end of the group of frame rear longitudinal beam bodies, and a rear trailer hook is arranged on the rear end face of the frame rear longitudinal beam body.

[0028] Preferably, the front frame assembly, the middle frame assembly and the rear frame assembly further comprise a plurality of supports which can be arranged on the corresponding first mounting points as needed.

[0029] The application also claims to protect a car which is applied to the frame system, and the car body is supported by the frame system.

[0030] The application also claims to protect a car which is applied to the frame system, and the car body is supported by the frame system.

[0031] Advantages

[0032] 1. The non-load-bearing automobile frame structure assembly formed by the installation method creatively uses the internal high-pressure forming technology to design a flexible combination frame structure system of the non-load-bearing automobile frame longitudinal beam and the cross beam, and solves the problems of poor welding size matching, low welding efficiency, high welding cost, uncontrollable welding thermal deformation, reduction of welding straightening tooling, and welding bead structure fatigue cracking caused by the welding combination of two U-shaped cold stamping of the traditional cold stamping frame longitudinal beam and cross beam.

[0033] 2. The internal high-pressure forming process is twice hardened through pipe making and forming, which effectively improves the structural strength by about 20%, the longitudinal beam and the cross beam of the frame assembly adopt the internal high-pressure forming process, the number of parts is reduced by 50% compared with the traditional cold stamping and the longitudinal beam and the cross beam of the combined welding, the welding overlapping lap edge of the traditional frame longitudinal beam and cross beam body itself is cancelled, the weight is effectively reduced by 10%, the frame assembly splicing welding cost is reduced by 40%, and at the same time, the mold development of 50% of the longitudinal beam and the cross beam is reduced, and the manufacturing cost of the frame longitudinal beam and the cross beam is reduced.

[0034] 3、Not only that, the longitudinal beam and the cross beam are all formed by the internal high pressure forming process, the frame assembly is connected by the cross beam and the longitudinal beam according to different positions and functions, respectively adopts the through type plug-in matching structure, adds the connecting plate to bridge the key connection of the longitudinal beam and the cross beam, and is welded by the carbon dioxide gas protection welding process, so that the overall strength is higher. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0036] Figure 1 A schematic diagram of a frame system using internal high pressure forming in the embodiment of the present application is shown;

[0037] Figure 2 A schematic diagram of the front of the frame system impacted by force is shown in the embodiment of the present application;

[0038] Figure 3 A schematic diagram of the side of the frame system impacted by force is shown in the embodiment of the present application;

[0039] Figure 4 A schematic diagram of the cross section of the longitudinal beam of the prior art is shown in the embodiment of the present application;

[0040] Figure 5 A top view of a frame system using internal high pressure forming in the embodiment of the present application is shown;

[0041] Figure 6 A schematic diagram of the front frame assembly is shown in the embodiment of the present application;

[0042] Figure 7 A schematic diagram of the distribution of the upper support of the front frame assembly is shown in the embodiment of the present application;

[0043] Figure 8 A schematic diagram of the cross section of the front trailer cross beam assembly is shown in the embodiment of the present application;

[0044] Figure 9 A schematic diagram of the cross section of the front lower arm front cross beam assembly is shown in the embodiment of the present application;

[0045] Figure 10 A schematic diagram of the front lower arm rear cross beam assembly is shown in the embodiment of the present application;

[0046] Figure 11 A schematic diagram of the gearbox suspension mounting cross beam assembly is shown in the embodiment of the present application;

[0047] Figure 12 The figure shows the connection of the battery protection front cross beam body and the frame front longitudinal beam body in the embodiment of the application.

[0048] Figure 13 The figure shows the frame assembly in the embodiment of the application.

[0049] Figure 14 The figure shows the rear frame assembly in the embodiment of the application.

[0050] Figure 15 The figure shows the distribution of the upper support of the rear frame assembly in the embodiment of the application.

[0051] Figure 16 The figure shows the cross section of the oil tank installation front cross beam assembly in the embodiment of the application.

[0052] Figure 17 The figure shows the cross section of the oil tank installation rear cross beam assembly in the embodiment of the application.

[0053] Figure 18 The figure shows the cross section of the gas tank installation cross beam assembly in the embodiment of the application.

[0054] Figure 19 The figure shows the cross section of the air pump installation cross beam assembly in the embodiment of the application.

[0055] Figure 20 The figure shows the cross section of the rear anti-collision beam assembly in the embodiment of the application.

[0056] In the figure,

[0057] 1, front frame assembly; 11, frame front longitudinal beam body; 12, battery protection front cross beam body;

[0058] 13, front trailer cross beam assembly; 130, front trailer hook cross beam body; 131, front trailer hook cross beam connecting plate;

[0059] 1N0, first cross beam body; 1N1, first connecting plate;

[0060] 14, front lower fork arm front cross beam assembly; 140, front lower fork arm front cross beam body; 141, front lower fork arm front cross beam connecting plate;

[0061] 15, front lower fork arm rear cross beam assembly; 150, front lower fork arm rear cross beam body; 151, front lower fork arm rear cross beam connecting plate;

[0062] 16, transmission suspension installation cross beam assembly; 160, transmission suspension installation cross beam body; 161, transmission suspension installation cross beam connecting plate; 162, cross beam connecting plate;

[0063] 110, front trailer hook; 111, front bumper beam mounting plate; 120, front shock tower mounting plate;

[0064] 112, engine suspension mounting bracket; 113, front lower control arm limit bracket; 114, front lower control arm rear mounting bracket; 115, front stabilizer bar mounting bracket; 116, first body suspension bushing bracket; 117, second body suspension bushing bracket; 118, second body suspension bushing bracket; 119, front lower control arm front mounting bracket;

[0065] 2, middle frame assembly; 21, middle frame rail body; 210, battery pack mounting plate; 211, third body suspension bushing bracket;

[0066] 3, rear frame assembly; 31, rear frame rail body;

[0067] 3n0, second cross beam body;

[0068] 32, oil tank mounting front cross beam assembly; 320, oil tank mounting front cross beam body;

[0069] 33, oil tank mounting rear cross beam assembly; 330, oil tank mounting rear cross beam body; 331, oil tank mounting rear cross beam connecting plate;

[0070] 34, air tank mounting cross beam assembly; 340, air tank mounting cross beam body; 341, air tank mounting cross beam connecting plate;

[0071] 35, air pump mounting cross beam assembly; 350, air pump mounting beam body;

[0072] 36, rear bumper beam assembly; 360, rear bumper beam cross beam body; 361, rear bumper beam cross beam connecting inner plate; 362, rear bumper beam cross beam connecting outer plate;

[0073] 310, oil tank mounting limit cross beam; 311, rear shock tower; 312, rear spring seat; 313, rear trailer hook;

[0074] 314, rear lift truck rear lifting bracket; 315, fourth body suspension bushing bracket; 316, rear subframe front mounting bracket; 317, rear upper control arm front mounting bracket; 318, rear upper control arm rear mounting bracket; 319, rear subframe rear mounting bracket, 319a, fifth body suspension bushing bracket. DETAILED DESCRIPTION

[0075] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0076] Reference Figure 1 , Figure 1 A schematic diagram of a frame system using internal high-pressure forming in an embodiment of the present application is shown. Figure 1 A frame system using internal high-pressure forming is described in the embodiment of the present application, which is used for supporting a vehicle body and includes a front frame assembly 1, a middle frame assembly 2 and a rear frame assembly 3, which are connected in a length direction to form a three-section frame welding assembly.

[0077] Reference Figure 2 and Figure 3 , Figure 2 A schematic diagram of a frame system front impact force in an embodiment of the present application is shown. Figure 3 A schematic diagram of a frame system side impact force in an embodiment of the present application is shown. It can be clearly seen from the diagram that the front frame assembly 1, the middle frame assembly 2 and the rear frame assembly 3 each include a set of longitudinal beams, the set of longitudinal beams are arranged in parallel with each other and are sequentially inserted in the length direction and are welded by a carbon dioxide gas shielded welding process.

[0078] A plurality of cross beams are arranged in the length direction between the set of longitudinal beams in the front frame assembly 1 and the rear frame assembly 3, the cross beams and the longitudinal beams are integrally formed by internal high-pressure forming, and the plurality of cross beams are fixed to the longitudinal beams by a through-insertion matching and / or an additional connecting plate and are welded by a carbon dioxide gas shielded welding process.

[0079] In the present application, a flexible combined frame structure system design method of non-load-bearing automobile frame longitudinal beams and cross beams is created by using internal high-pressure forming technology. Here, reference can be made to Figure 4 , Figure 4 A schematic diagram of a longitudinal beam cross section in the prior art and a longitudinal beam cross section in the present application is shown. It can be clearly seen that the longitudinal beam cross section in the prior art is two split U-shaped welds.

[0080] The longitudinal beam in the present application is formed by internal high-pressure expansion, and the cross section is an integral sealed ring.

[0081] Therefore, the present application solves the problems of poor CO2 welding size matching, low welding efficiency, high welding cost, out-of-control welding thermal deformation, reduction of welding straightening tooling, welding bead structure fatigue cracking and the like caused by the welding combination of two U-shaped cold stamping bodies of the conventional cold stamping frame longitudinal beams and cross beams.

[0082] Moreover, the high-pressure forming process effectively improves the structural strength by about 20% through two work hardening processes of pipe making and forming. The main longitudinal beam body and the transverse beam body of the frame assembly adopt the high-pressure forming process. Compared with the traditional cold stamping and the combined longitudinal beam and transverse beam, the number of parts is reduced by 50%. The traditional frame longitudinal beam and transverse beam body itself is cancelled. The welding overlap edge is effectively reduced by 10%. The frame assembly splicing welding cost is reduced by 40%. At the same time, the cold stamping die development of the longitudinal beam and the transverse beam is reduced by 50%. The manufacturing cost of the frame longitudinal beam and the transverse beam is reduced.

[0083] Moreover, according to different positions and functions, the key connection between the transverse beam and the longitudinal beam is matched by the through-type plug-in structure and the additional connecting plate. The CO2 welding connection is adopted to further strengthen the strength and the connection stability.

[0084] Reference Figure 5 and Figure 6 , Figure 5 A front frame assembly is shown in the embodiment of the application. Figure 6 A front frame assembly is shown in the embodiment of the application. Figure 5 The front frame assembly 1 includes a set of front longitudinal beam bodies 11 arranged in parallel with each other, and the front longitudinal beam bodies 11 are sequentially connected in the length direction with a front trailer cross beam assembly 13, a front lower arm front cross beam assembly 14, a front lower arm rear cross beam assembly 15, a transmission suspension mounting cross beam assembly 16, and a battery protection front cross beam body 12.

[0085] The front frame assembly 1 further includes a front trailer hook 110, a front bumper beam mounting plate 111, and a front shock tower mounting plate 120. The front trailer hook cross beam connecting plate 131 is connected with the front trailer hook 110 on the front end surface. The front longitudinal beam body 11 is connected with the front bumper beam mounting plate 111 on the front end surface. The front longitudinal beam body 11 is connected with the front shock tower mounting plate 120 on the outer side wall.

[0086] Reference Figure 7 , Figure 7 A front frame assembly is shown in the embodiment of the application.

[0087] Reference Figure 8 , Figure 8 The front trailer cross beam assembly 13 is shown in the embodiment of the present application. As can be clearly seen in the schematic diagram, the front trailer cross beam assembly 13 comprises a front trailer hook cross beam body 130, a group of front longitudinal beam bodies 11 at the bottom end welded with the front trailer hook cross beam connecting plates 131 by the carbon dioxide gas shield welding process, and the front trailer hook cross beam body 130 inserted into the group of front trailer hook cross beam connecting plates 131 at both ends respectively and welded by the carbon dioxide gas shield welding process.

[0088] The front lower fork arm front cross beam assembly (14) and the front lower fork arm rear cross beam assembly (15) each comprise a first cross beam body (1N0) and a group of first connecting plates (1N1). The first cross beam body (1N0) is configured in a U-shaped structure, and the top end is welded with the group of first connecting plates (1N1) by the carbon dioxide gas shield welding process. The other end of the group of first connecting plates (1N1) is respectively welded with the group of front longitudinal beam bodies (11) by the carbon dioxide gas shield welding process.

[0089] The front lower fork arm front cross beam assembly (14) and the front lower fork arm rear cross beam assembly (15) will be described separately as follows:

[0090] Reference Figure 9 , Figure 9 The front lower fork arm front cross beam assembly 14 is shown in the embodiment of the present application. As can be clearly seen in the schematic diagram, the front lower fork arm front cross beam assembly 14 comprises a front lower fork arm front cross beam body 140 and a group of front lower fork arm front cross beam connecting plates 141. The front lower fork arm front cross beam body 140 is configured in a U-shaped structure, and the top end is welded with one end of the group of front lower fork arm front cross beam connecting plates 141 by carbon dioxide welding. The other end of the group of front lower fork arm front cross beam connecting plates 141 is respectively welded with the group of front longitudinal beam bodies 11 by the carbon dioxide gas shield welding process.

[0091] Reference Figure 10 , Figure 10 The front lower fork arm rear cross beam assembly 15 is shown in the embodiment of the present application. As can be clearly seen in the schematic diagram, the front lower fork arm rear cross beam assembly 15 comprises a front lower fork arm rear cross beam body 150 and a group of front lower fork arm rear cross beam connecting plates 151. The front lower fork arm rear cross beam body 150 is configured in a U-shaped structure, and the top end is respectively welded with one end of the group of front lower fork arm rear cross beam connecting plates 151 by the carbon dioxide gas shield welding process. The other end of the group of front lower fork arm rear cross beam connecting plates 151 is respectively welded with the group of front longitudinal beam bodies 11 by the carbon dioxide gas shield welding process.

[0092] Reference Figure 11 , Figure 11The schematic diagram of the gearbox suspension mounting cross beam assembly in the embodiment of the application is shown. It can be clearly seen from the schematic diagram that the gearbox suspension mounting cross beam assembly 16 comprises a gearbox suspension mounting cross beam body 160 and a gearbox suspension mounting cross beam connecting plate 161. The gearbox suspension mounting cross beam body 160 is in the form of a U-shaped bracket. The top end of the U-shaped bracket is respectively welded to a group of front longitudinal beam bodies 11 by the carbon dioxide gas shielded welding process, and the bottom end of the U-shaped bracket is welded to a group of cross beam connecting plates 162 by the carbon dioxide gas shielded welding process. The gearbox suspension mounting cross beam connecting plate 161 is respectively welded to the gearbox suspension mounting cross beam body 160 and the front longitudinal beam body 11 at both ends by the carbon dioxide gas shielded welding process.

[0093] The both ends of the battery protection front cross beam body 12 are overlapped with a group of front longitudinal beam bodies 11, and are welded by the carbon dioxide gas shielded welding process.

[0094] A group of front longitudinal beam bodies 11, a front trailer hook cross beam body 130, a front lower fork arm front cross beam body 140, a front lower fork arm rear cross beam body 150, a gearbox suspension mounting cross beam body 160 and a battery protection front cross beam body 12 are all integrally formed by internal high pressure.

[0095] Reference Figure 12 , Figure 12 The schematic diagram of the battery protection front cross beam body and the front longitudinal beam body in the embodiment of the application is shown. It can be clearly seen from the schematic diagram that the middle frame assembly 2 comprises a group of middle longitudinal beam bodies 21, which are respectively inserted into a group of front longitudinal beam bodies 11 along the length direction and are welded by the carbon dioxide gas shielded welding process. The group of middle longitudinal beam bodies 21 are integrally formed by internal high pressure.

[0096] The middle frame assembly 2 further comprises a battery pack mounting plate 210. The group of middle longitudinal beam bodies 21 are expanded by internal high pressure to be in the form of a closed ring, and the battery pack mounting plate 210 is mounted in the ring cavity.

[0097] The middle frame assembly 2 further comprises a third vehicle body suspension bushing bracket 211, which is respectively installed at the corresponding position according to different vehicle models and sizes.

[0098] Reference Figure 13 , Figure 13 The schematic diagram of the middle frame assembly in the embodiment of the application is shown. Reference Figure 14 , Figure 14 The schematic diagram of the rear frame assembly in the embodiment of the application is shown. Figure 13As can be clearly seen in the figure, the rear frame assembly 3 comprises a set of rear longitudinal beam bodies 31 arranged in parallel with each other, the rear longitudinal beam bodies 31 are respectively inserted into the set of middle longitudinal beam bodies 21 along the length direction and welded by the carbon dioxide gas shield welding process, and the rear longitudinal beam bodies 31 are sequentially connected with the oil tank mounting front cross beam assembly 32, the oil tank mounting rear cross beam assembly 33, the gas tank mounting cross beam assembly 34, the air pump mounting cross beam assembly 35 and the rear anti-collision beam assembly 36 along the length direction.

[0099] The rear frame assembly 3 further comprises an oil tank mounting limiting cross beam 310, a rear shock tower 311, a rear spring seat 312 and a rear trailer hook 313, the oil tank mounting limiting cross beam 310 is provided on the rear longitudinal beam body 31 away from the front frame assembly 1, the oil tank mounting limiting cross beam 310 is provided with two parallel ends mounted on the oil tank mounting front cross beam body 320 and the oil tank mounting rear cross beam body, the rear longitudinal beam bodies are provided with the rear shock tower 311 on the outer middle part, the rear spring seat 312 is arranged at the bottom end of the rear longitudinal beam bodies behind the rear shock tower 311, and the rear longitudinal beam body rear end surface is provided with the rear trailer hook 313.

[0100] Reference Figure 15 , Figure 15 The rear frame assembly upper support distribution schematic diagram in the embodiment of the application is shown; as can be clearly seen in the schematic diagram, the rear frame assembly 3 further comprises a lifting machine rear towing support 314, a fourth vehicle body suspension bushing support 315, a rear sub-frame front mounting support 316, a rear suspension upper arm front mounting support 317, a rear suspension upper arm rear mounting support 318, a rear sub-frame rear mounting support 319 and a fifth vehicle body suspension bushing support 319a, and the supports are respectively mounted on the corresponding positions according to different vehicle models and sizes.

[0101] The oil tank mounting front cross beam assembly (32) and the air pump mounting cross beam assembly (35) both comprise a second cross beam body (3n0), and the two ends are respectively inserted into the set of rear longitudinal beam bodies (31) in a through type, and are welded by the carbon dioxide gas shield welding process;

[0102] The oil tank mounting front cross beam assembly (32) and the air pump mounting cross beam assembly (35) are described separately as follows:

[0103] Figure 16 The oil tank mounting front cross beam assembly sectional schematic diagram in the embodiment of the application is shown; as can be clearly seen in the schematic diagram, the oil tank mounting front cross beam assembly 32 comprises an oil tank mounting front cross beam body 320, which is in an arch shape and the two ends are respectively inserted into the set of rear longitudinal beam bodies 31 in a through type and are welded by the carbon dioxide gas shield welding process.

[0104] Figure 17The schematic diagram of the cross section of the oil tank mounting rear cross beam assembly in the embodiment of the application is shown. It can be obviously seen in the schematic diagram that the oil tank mounting rear cross beam assembly 33 comprises an oil tank mounting rear cross beam body 330. The oil tank mounting rear cross beam body 330 is in a U-shaped structure. The top end of the oil tank mounting rear cross beam body 330 is overlapped with one end of a set of oil tank mounting rear cross beam connecting plates 331 respectively. The two ends of the oil tank mounting rear cross beam connecting plates 331 are extended to the inner edge surface of the rear longitudinal beam body 31 through carbon dioxide gas shield welding process.

[0105] Figure 18 The schematic diagram of the cross section of the gas tank mounting cross beam assembly in the embodiment of the application is shown. It can be obviously seen in the schematic diagram that the gas tank mounting cross beam assembly 34 comprises a gas tank mounting cross beam body 340. The two ends of the gas tank mounting cross beam body 340 are respectively inserted into a set of rear longitudinal beam bodies 31 in a through-insertion mode. The insertion positions are surrounded by the L-shaped gas tank mounting cross beam connecting plates 341. The plate surfaces are welded through the carbon dioxide gas shield welding process.

[0106] Figure 19 The schematic diagram of the cross section of the air pump mounting cross beam assembly in the embodiment of the application is shown. It can be obviously seen in the schematic diagram that the air pump mounting cross beam assembly 35 comprises an air pump mounting beam body 350 in a straight rod structure. The two ends of the air pump mounting beam body 350 are respectively inserted into a set of rear longitudinal beam bodies 31 in a through-insertion mode. The two ends of the air pump mounting beam body 350 are welded through the carbon dioxide gas shield welding process.

[0107] Figure 20 The schematic diagram of the cross section of the rear anti-collision beam assembly in the embodiment of the application is shown. It can be obviously seen in the schematic diagram that the rear anti-collision beam assembly 36 comprises a rear anti-collision beam cross beam body 360. The two ends of the rear anti-collision beam cross beam body 360 are respectively inserted into a set of rear longitudinal beam bodies 31 in a through-insertion mode. The two side corners formed by the insertion are respectively provided with the rear anti-collision beam cross beam connecting inner plates 361 and the rear anti-collision beam cross beam connecting outer plates 362 arranged in an inclined mode. The plate surfaces are sequentially attached to the rear longitudinal beam body 31 and the rear anti-collision beam cross beam body 360 and welded through the carbon dioxide gas shield welding process.

[0108] The rear longitudinal beam body 31, the oil tank mounting front cross beam body 320, the oil tank mounting rear cross beam body 330, the gas tank mounting cross beam body 340, the air pump mounting beam body 350 and the rear anti-collision beam cross beam body 360 are all high-pressure integrally formed.

[0109] The application also protects a vehicle. The vehicle body is supported by the frame system.

[0110] The application also protects a vehicle. The vehicle body is supported by the frame system.

[0111] Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood that modifications can be made to the foregoing embodiments, or additional implementations can be implemented, without departing from the spirit and scope of the inventive subject matter. Accordingly, the present application is not limited to the implementations described herein, but is intended to be defined by the claims set forth below, and equivalents thereof.

Claims

1. A frame system for supporting a vehicle body using internal high pressure forming, characterized by, It comprises a front frame assembly (1), a middle frame assembly (2) and a rear frame assembly (3), which are connected in length direction to form a three-section frame welding assembly; The front frame assembly (1), the middle frame assembly (2) and the rear frame assembly (3) each comprise a set of longitudinal beams arranged in parallel with each other and sequentially inserted in length direction and welded by carbon dioxide gas shielded welding process; A set of longitudinal beams in the front frame assembly (1) and the rear frame assembly (3) are arranged with a plurality of cross beams in length direction, and the cross beams and the longitudinal beams are each integrally formed by internal high pressure, and the plurality of cross beams are fixed on the longitudinal beams by through-insertion matching and / or additional connecting plates and welded by carbon dioxide gas shielded welding process; The front frame assembly (1) comprises a set of front longitudinal beam bodies (11) arranged in parallel with each other, and the front longitudinal beam bodies (11) are sequentially connected with a front trailer cross beam assembly (13), a front lower fork arm front cross beam assembly (14), a front lower fork arm rear cross beam assembly (15), a transmission suspension mounting cross beam assembly (16) and a battery protection front cross beam body (12) in length direction, wherein The front trailer cross beam assembly (13) comprises a front trailer hook cross beam body (130), the bottom end of the set of front longitudinal beam bodies (11) is welded with front trailer hook cross beam connecting plates (131) by carbon dioxide gas shielded welding process, and the two ends of the front trailer hook cross beam body (130) are respectively through-inserted into a set of front trailer hook cross beam connecting plates (131) and welded by carbon dioxide gas shielded welding process; The front lower fork arm front cross beam assembly (14) and the front lower fork arm rear cross beam assembly (15) each comprise a first cross beam body (1N0) and a set of first connecting plates (1N1), the first cross beam body (1N0) is configured in U-shaped structure, and the top end is welded with the set of first connecting plates (1N1) by carbon dioxide gas shielded welding process, and the other end of the set of first connecting plates (1N1) is respectively welded with the set of front longitudinal beam bodies (11) by carbon dioxide gas shielded welding process; The transmission suspension mounting cross beam assembly (16) comprises a transmission suspension mounting cross beam body (160) and a transmission suspension mounting cross beam connecting plate (161), the transmission suspension mounting cross beam body (160) is configured in U-shaped bracket structure, the top end of the U-shaped bracket is respectively welded with the set of front longitudinal beam bodies (11) by carbon dioxide gas shielded welding process, and the bottom end of the U-shaped bracket is welded with a set of cross beam connecting plates (162) by carbon dioxide gas shielded welding process; the two ends of the transmission suspension mounting cross beam connecting plate (161) are respectively welded with the transmission suspension mounting cross beam body (160) and the front longitudinal beam body (11) by carbon dioxide gas shielded welding process; The two ends of the battery protection front cross beam body (12) are overlapped with the set of front longitudinal beam bodies (11) and welded by carbon dioxide gas shielded welding process; The set of front longitudinal beam bodies (11), the front trailer hook cross beam body (130), the first cross beam body (1N0), the transmission suspension mounting cross beam body (160) and the battery protection front cross beam body (12) are each integrally formed by internal high pressure.

2. A frame system employing hydro-forming as set forth in claim 1 wherein, The middle frame assembly (2) comprises a plurality of frame middle longitudinal beam bodies (21) which are respectively inserted into the frame front longitudinal beam bodies (11) along the length direction and are welded by the carbon dioxide gas protection welding process, and the frame middle longitudinal beam bodies (21) are high-pressure integrally formed.

3. A frame system employing hydro-forming as set forth in claim 2 wherein, The middle frame assembly (2) further comprises a battery pack mounting plate (210), the frame middle longitudinal beam bodies (21) are high-pressure expanded into a closed ring in cross section, and the battery pack mounting plate (210) is mounted in the ring cavity.

4. The frame system of claim 1, wherein The rear frame assembly (3) comprises a plurality of frame rear longitudinal beam bodies (31) which are arranged in parallel with each other, the frame rear longitudinal beam bodies (31) are respectively inserted into the frame middle longitudinal beam bodies (21) along the length direction and are welded by the carbon dioxide gas protection welding process, and the frame rear longitudinal beam bodies (31) are sequentially connected along the length direction with an oil tank mounting front cross beam assembly (32), an oil tank mounting rear cross beam assembly (33), a gas storage tank mounting cross beam assembly (34), a gas inflating pump mounting cross beam assembly (35) and a rear anti-collision beam assembly (36), wherein, The oil tank mounting front cross beam assembly (32) and the gas inflating pump mounting cross beam assembly (35) each comprise a second cross beam body (3n0) which is respectively inserted into the frame rear longitudinal beam bodies (31) at both ends in a through insertion mode and is welded by the carbon dioxide gas protection welding process; The oil tank mounting rear cross beam assembly (33) comprises an oil tank mounting rear cross beam body (330) which is constructed in a U-shaped structure, and the oil tank mounting rear cross beam body (330) is respectively overlapped at the top end with one end of a plurality of oil tank mounting rear cross beam connecting plates (331) and is welded by the carbon dioxide gas protection welding process, and the other end of the oil tank mounting rear cross beam connecting plates (331) extends to the inner edge surface of the frame rear longitudinal beam body (31) and is welded by the carbon dioxide gas protection welding process; The gas storage tank mounting cross beam assembly (34) comprises a gas storage tank mounting cross beam body (340) which is respectively inserted into the frame rear longitudinal beam bodies (31) at both ends in a through insertion mode, and a gas storage tank mounting cross beam connecting plate (341) which is arranged in a surrounding mode at the insertion position and has an L-shaped cross section, and the connecting plate surfaces are welded by the carbon dioxide gas protection welding process; The rear anti-collision beam assembly (36) comprises a rear anti-collision beam cross beam body (360) which is respectively inserted into the frame rear longitudinal beam bodies (31) at both ends in a through insertion mode, and the two side corners formed by the insertion are respectively arranged with a rear anti-collision beam cross beam connecting inner plate (361) and a rear anti-collision beam cross beam connecting outer plate (362) in an inclined mode, and the plate surfaces are sequentially extended and attached to the frame rear longitudinal beam body (31) and the rear anti-collision beam cross beam body (360) and are welded by the carbon dioxide gas protection welding process; The frame rear longitudinal beam bodies (31), the second cross beam bodies (3n0), the oil tank mounting rear cross beam bodies (330), the gas storage tank mounting cross beam bodies (340) and the rear anti-collision beam cross beam bodies (360) are all high-pressure integrally formed.

5. A frame system employing hydro-forming as set forth in claim 4 wherein, The rear frame assembly (3) further comprises an oil tank mounting limiting cross beam (310), a rear shock tower (311), a rear spring seat (312) and a rear trailer hook (313), wherein, The second cross beam body (3n0) on the oil tank mounting front cross beam assembly (32) is an oil tank mounting front cross beam body (320); With the end face of the frame rear longitudinal beam body (31) away from the front frame assembly (1) as the back, the oil tank mounting limiting cross beam (310) has two parallel arrangements, and the two ends are respectively mounted on the oil tank mounting front cross beam body (320) and the oil tank mounting rear cross beam body, a group of rear shock towers (311) are mounted on the outer middle part of the frame rear longitudinal beam body, and a rear spring seat (312) is arranged at the bottom end of the frame rear longitudinal beam body behind the rear shock tower (311), and a rear trailer hook (313) is arranged on the rear end face of the frame rear longitudinal beam body.

6. A frame system employing hydro-forming as set forth in claim 1 wherein, The front frame assembly (1) further comprises a front trailer hook (110), a front anti-collision beam mounting plate (111) and a front shock tower mounting plate (120), wherein, With the end face of the front trailer hook cross beam connecting plate (131) away from the rear frame assembly (3) as the front, the front trailer hook cross beam connecting plate (131) is connected with the front trailer hook (110) on the front end face, and the front anti-collision beam mounting plate (111) is connected with the front end face of the frame front longitudinal beam body (11), and the front shock tower mounting plate (120) is connected with the outer side wall of the frame front longitudinal beam body (11).

7. The frame system of claim 1, wherein, The front frame assembly (1), the middle frame assembly (2) and the rear frame assembly (3) further comprise a plurality of brackets arranged on the corresponding first mounting points.

8. A vehicle applied to the frame system according to any one of claims 1 to 7, characterized by The vehicle body is supported by the frame system.

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