An all-aluminum alloy welding-free frame structure assembly

Abstract

The present application relates to the field of vehicle manufacturing, especially to a full aluminum alloy welding-free frame structure assembly, comprising a longitudinal beam and a cross beam assembly, the cross beam assembly comprises a first cross beam and a second cross beam, the first cross beam comprises a first cross beam base and a cross beam reinforcing piece, the first cross beam base is locked with a high load area on the longitudinal beam; the cross beam reinforcing piece is locked with the side surface of the first cross beam base and the longitudinal beam; the second cross beam comprises a second cross beam base, and the second cross beam base is locked with a low load area on the longitudinal beam. Through the design of the first cross beam and the second cross beam, different cross beam structures with different bearing capacities are used on the longitudinal beam, the bearing capacity of the frame is improved while the structure is lightened, and the service life of the frame is improved; through the design of the cross beam reinforcing piece of the first cross beam in the high load area, the connection strength of the cross beam and the longitudinal beam is improved through the multi-point connection of the cross beam reinforcing piece.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of vehicle manufacturing, in particular to a full aluminum alloy non-welded frame structure assembly. BACKGROUND

[0002] The connection between the cross beam and the longitudinal beam of the traditional frame is through welding, the cross beam is directly inserted into the C-shaped opening of the longitudinal beam and then welded and fixed, a large amount of manual welding is difficult to control the quality, and the manufacturing time is long; since there is no other reinforcing component, the structure between the entire cross beam and the longitudinal beam is only borne by the welded part, which causes stress concentration at the connecting part of the cross beam and the longitudinal beam, and reduces the service life of the frame; when the frame cooperates with other structures, in order to avoid the influence of excessive load on the frame structure, the thickness of the cross beam is usually changed at the corresponding frame to improve the structural strength, which not only increases the weight of the frame, but also requires the use of multiple cross beams on the same frame, which is not conducive to production and assembly. SUMMARY

[0003] The technical problem to be solved by the present application is to provide a full aluminum alloy non-welded frame structure assembly which is lightweight and effectively reduces stress concentration.

[0004] In order to solve the above technical problems, the technical scheme adopted by the present application is as follows: a full aluminum alloy non-welded frame structure assembly, comprising a longitudinal beam and a cross beam assembly, the cross beam assembly comprising a first cross beam and a second cross beam, the first cross beam comprising a first cross beam base and a cross beam reinforcing piece, the first cross beam base being locked with a high load area on the longitudinal beam; the cross beam reinforcing piece being locked with the side surface of the first cross beam base and the longitudinal beam; the second cross beam comprising a second cross beam base, the second cross beam base being locked with a low load area on the longitudinal beam.

[0005] The beneficial effects of the present application are as follows: through the design of the first cross beam and the second cross beam, different cross beam structures with different load-bearing capacities are used on the longitudinal beam, the load-bearing capacity of the frame is improved while the structure is lightweight, and the service life of the frame is improved; through the design of the cross beam reinforcing piece of the first cross beam in the high load area, the connection strength of the cross beam and the longitudinal beam is improved by the multi-point connection of the cross beam reinforcing piece. BRIEF DESCRIPTION OF DRAWINGS

[0006] Figure 1 It is a structural schematic view of the full aluminum alloy non-welded frame structure assembly of the first embodiment of the present application.

[0007] Figure 2 It is a structural schematic view of the first cross beam of the first embodiment of the present application.

[0008] Figure 3 It is a structural schematic view of the cooperation of the reinforcing plate, the lining plate and the first reinforcing side plate of the first embodiment of the present application.

[0009] Figure 4 Structure diagram of the second cross beam of the embodiment one of the present application;

[0010] Figure 5 Structure diagram of the second cross beam of the embodiment one of the present application in the length direction of the longitudinal beam.

[0011] Label explanation:

[0012] 1, longitudinal beam; 2, first cross beam; 21, first cross beam base; 22, cross beam reinforcing part; 221, reinforcing plate; 2211, vertical plate; 2212, horizontal plate; 2213, limiting port; 222, lining plate; 223, first reinforcing side plate; 224, second reinforcing side plate; 23, first cross beam sealing plate; 231, pressing plate; 232, connecting plate; 3, second cross beam; 31, second cross beam base; 32, second cross beam sealing plate. DETAILED DESCRIPTION

[0013] In order to explain the technical content, the purpose and the effect of the present application in detail, the following will be explained in combination with the embodiments and the drawings.

[0014] Please refer to Figures 1 to 5 An all-aluminum alloy non-welded frame structure assembly, comprising a longitudinal beam 1 and a cross beam assembly, the cross beam assembly comprising a first cross beam 2 and a second cross beam 3, the first cross beam 2 comprising a first cross beam base 21 and a cross beam reinforcing part 22, the first cross beam base 21 being locked with the high load area on the longitudinal beam 1; the cross beam reinforcing part 22 being locked with the side surface of the first cross beam base 21 and the longitudinal beam 1 at the same time; the second cross beam 3 comprising a second cross beam base 31, the second cross beam base 31 being locked with the low load area of the longitudinal beam 1.

[0015] From the above description, the beneficial effects of the present application are as follows: through the design of the first cross beam 2 and the second cross beam 3, different cross beam structures with different bearing capacities are used on the longitudinal beam 1, the structure is lightweight, the bearing capacity of the frame is improved, and the service life of the frame is improved; through the design of the cross beam reinforcing part 22 of the first cross beam 2 in the high load area, the connection strength of the cross beam and the longitudinal beam 1 is improved by the multi-point connection of the cross beam reinforcing part 22.

[0016] Further, the longitudinal beam 1, the first cross beam base 21 and the second cross beam base 31 are all I-beams; the flange plate of the first cross beam base 21 and the flange plate of the second cross beam base 31 are locked with the flange plate of the longitudinal beam 1; the web plate of the first cross beam base 21 and the flange plate of the longitudinal beam 1 are locked with the cross beam reinforcing part 22 at the same time.

[0017] From the above description, it can be seen that during installation, the first cross beam base body 21 and the second cross beam base body 31 are inserted between the wing plates of the longitudinal beam 1, and the web plate of the first cross beam base body 21 and the wing plate of the longitudinal beam 1 are connected by the cross beam reinforcing piece 22 at the same time of locking the first cross beam base body 21 and the second cross beam base body 31 to the wing plates of the longitudinal beam 1, and the arrangement of the staggered connecting surfaces improves the connecting strength of the cross beam and the longitudinal beam 1.

[0018] Further, the cross beam reinforcing piece 22 comprises a reinforcing plate 221, the reinforcing plate 221 is in L shape, the reinforcing plate 221 comprises a vertical plate 2211 and a horizontal plate 2212 connected perpendicularly to the vertical plate 2211, the horizontal plate 2212 is locked to one side wing plate of the longitudinal beam 1, the vertical plate 2211 is locked to the web plate of the longitudinal beam 1, and one end of the vertical plate 2211 abuts against the wing plate away from the side of the horizontal plate 2212.

[0019] From the above description, it can be seen that by arranging the reinforcing plate 221, the vertical plate 2211 of the reinforcing plate 221 serves as a reinforcing structure of the web plate of the longitudinal beam 1, and simultaneously bears the load of the upper and lower wing plates of the longitudinal beam 1; and the horizontal plate 2212 of the reinforcing plate 221 serves as a reinforcing structure of the wing plate of the longitudinal beam 1 and the first cross beam base body 21, and simultaneously bears the transverse impact of the web plate of the longitudinal beam 1.

[0020] Further, the cross beam reinforcing piece 22 further comprises a lining plate 222, the lining plate 222 is connected with the reinforcing plate 221, two lining plates 222 are arranged on the same reinforcing plate 221, the two lining plates 222 are respectively arranged on the two sides of the web plate of the first cross beam base body 21, and the two lining plates 222 have an installation gap matching the width of the web plate of the first cross beam base body 21; and the lining plate 222 is locked to the web plate of the first cross beam base body 21.

[0021] From the above description, it can be seen that by arranging the lining plate 222 connected to the reinforcing plate 221, the installation gap formed between the two lining plates 222 serves as an installation space of the web plate of the first cross beam base body 21, thereby playing a positioning role during installation; the lining plate 222 is locked to the web plate of the first cross beam base body 21 to improve the structural strength of the first cross beam base body 21 and assist in bearing the load of the upper and lower wing plates of the first cross beam base body 21; and the lining plate 222 is connected with the reinforcing plate 221 to realize the connection of the cross beam reinforcing piece 22 to the first cross beam base body 21 and the longitudinal beam 1.

[0022] Further, the two ends of the lining plate 222 located on one side of the web plate of the first cross beam base body 21 are bent and abut against the upper and lower wing plates of the first cross beam base body 21 in parallel.

[0023] From the above description, it can be seen that by arranging the two ends of the lining plate 222 to be bent and abut against the upper and lower wing plates of the first cross beam base body 21 in parallel, the pressure bearing area of the lining plate 222 is increased, and the structural strength is improved.

[0024] Further, the horizontal plate 2212 is provided with a limiting opening 2213 opening towards the first beam base 21, and the opening width of the limiting opening 2213 matches the wing plate width of the first beam base 21.

[0025] From the above description, it can be seen that the limiting opening 2213 provided on the horizontal plate 2212 assists the fixing of the first beam base 21 by the auxiliary lining plate 222; during assembly, the web plate of the first beam base 21 is inserted between the two lining plates 222, and the wing plate of the first beam base 21 is inserted into the limiting opening 2213.

[0026] Further, the beam reinforcement 22 further comprises a plurality of first reinforcing side plates 223 arranged along the length direction of the horizontal plate 2212, one side of the first reinforcing side plate 223 is connected with the vertical plate 2211, and the other side is connected with the horizontal plate 2212.

[0027] From the above description, it can be seen that the first reinforcing side plate 223 is arranged to improve the support strength of the reinforcing plate 221 by connecting the first reinforcing side plate 223 with the vertical plate 2211 and the horizontal plate 2212.

[0028] Further, the limiting opening 2213 is provided with a first reinforcing side plate 223 on both sides, the first reinforcing side plate 223 abuts against the side surface of the wing plate of the first beam base 21; and the end of the lining plate 222 close to the horizontal plate 2212 is connected with the first reinforcing side plate 223.

[0029] From the above description, it can be seen that the first reinforcing side plate 223 arranged at the limiting opening 2213 can assist the positioning of the first beam base 21 by the lining plate 222 and the limiting opening 2213, and abut against both sides of the wing plate of the first beam base 21 to strengthen the fixing of the first beam base 21; and the connection of the lining plate 222 and the first reinforcing side plate 223 enables the vertical stress on the lining plate 222 to be evenly dispersed to the reinforcing plate 221.

[0030] Further, the first beam 2 further comprises a first beam cover plate 23, the first beam cover plate 23 is C-shaped, the first beam cover plate 23 comprises two parallel pressing plates 231 and a connecting plate 232 connected vertically between the two pressing plates 231; the pressing plate 231 is locked with the wing plate of the longitudinal beam 1, and the connecting plate 232 is locked with the web plate of the longitudinal beam 1; the beam reinforcement 22 and the first beam base 21 are arranged between the two pressing plates 231, the horizontal plate 2212 is locked with the pressing plate 231, the vertical plate 2211 is locked with the connecting plate 232, one end of the vertical plate 2211 abuts against the pressing plate 231 away from the horizontal plate 2212, and the wing plate of the first beam base 21 is locked with the pressing plate 231.

[0031] From the above description, by setting the first beam sealing plate 23, the connection area of the first beam 2 and the longitudinal beam 1 is increased by the locking of the first beam sealing plate 23 and the longitudinal beam 1, and the connection strength is improved; at the same time, the setting of the first beam sealing plate 23 can strengthen the structure of the longitudinal beam 1, the structure of the first beam sealing plate 23 is strengthened by the arrangement of the reinforcing plate 221 in the first beam sealing plate 23, the structure of the reinforcing plate 221 is strengthened by the arrangement of the first reinforcing side plate 223, and the structure of the first beam base body 21 is strengthened by the lining plate 222, the arrangement of the multi-layer reinforcing structure greatly reduces the stress concentration when bearing pressure, and effectively improves the strength of the frame structure.

[0032] Further, the beam reinforcing piece 22 further comprises a second reinforcing side plate 224, and the second reinforcing side plate 224 is arranged on the first beam base body 21; the second reinforcing side plate 224 is in L shape, one side of the second reinforcing side plate 224 is locked with the web plate of the first beam base body 21, and the other side is locked with the wing plate of the first beam base body 21; the two ends of the second reinforcing side plate 224 along the length direction are in abutment with the lining plate 222.

[0033] From the above description, by setting the second reinforcing side plate 224, the web plate on both sides of the first beam base body 21 and the wing plate are strengthened by the second reinforcing side plate 224; at the same time, the two ends of the second reinforcing side plate 224 are in abutment with the lining plate 222, so that it can assist the first beam base body 21, the reinforcing plate 221 and the lining plate 222, and improve the resistance to lateral impact of the longitudinal beam 1.

[0034] Reference Figures 1 to 5 , the embodiment one of the present application is:

[0035] The application scenario of the present application is: in the connection of the longitudinal beam 1 and the beam of the traditional frame, the common form is welding, and in the connection process, the beam is directly connected with the longitudinal beam 1, and the overall stress is relatively concentrated; in the case of high load area, the thickness of the beam is usually increased as the adjustment scheme, so that the overall quality of the vehicle body is large, and it is not conducive to the unified production of the beams on the same frame.

[0036] As Figures 1 to 5As shown, the full aluminum alloy non-welded frame structure assembly of the embodiment comprises longitudinal beams 1 and cross beam assemblies, the longitudinal beams 1 and cross beam assemblies are made of aluminum alloy material, the cross beam assembly comprises a first cross beam 2 and a second cross beam 3, the first cross beam 2 comprises a first cross beam base body 21, a cross beam reinforcing member 22 and a first cross beam sealing plate 23, the second cross beam 3 comprises a second cross beam base body 31 and a second cross beam sealing plate 32. On the general frame structure, the load of the middle part of the frame is low, the front and rear sections of the frame have higher load due to the connection of the suspension system, and therefore a more impact-resistant and higher-strength cross beam and longitudinal beam matching structure is required. In the embodiment, the second cross beam base body 31 is locked to the middle part of the longitudinal beam 1, and the first cross beam base body 21 is arranged on both sides of the second cross beam base body 31 in the length direction of the longitudinal beam 1, i.e. corresponding to the front and rear sections of the longitudinal beam 1.

[0037] Specifically, the second cross beam sealing plate 32 is C-shaped, as shown in Figure 4 and Figure 5 which comprises two parallel pressing plates 231 and a connecting plate 232 connected vertically between the two pressing plates 231; the pressing plates 231 are locked to the wing plates of the longitudinal beam 1, and the connecting plate 232 is locked to the web plate of the longitudinal beam 1, and the second cross beam base body 31 is inserted into the second cross beam sealing plate 32, and the upper and lower wing plates of the second cross beam base body 31 are locked to the two pressing plates 231 of the second cross beam sealing plate 32.

[0038] As shown in Figure 1 and Figure 2 the first cross beam base body 21 is arranged on both sides of the second cross beam base body 31 in the length direction of the longitudinal beam 1, and is locked to the high load area on the longitudinal beam 1; specifically, the first cross beam sealing plate 23 is C-shaped, which comprises two parallel pressing plates 231 and a connecting plate 232 connected vertically between the two pressing plates 231; the pressing plates 231 are locked to the wing plates of the longitudinal beam 1, and the connecting plate 232 is locked to the web plate of the longitudinal beam 1, and the first cross beam base body 21 is inserted into the first cross beam sealing plate 23, and the upper and lower wing plates of the first cross beam base body 21 are locked to the two pressing plates 231 of the first cross beam sealing plate 23; the cross beam reinforcing member 22 is locked in the first cross beam sealing plate 23.

[0039] The longitudinal beam 1, the first cross beam base body 21 and the second cross beam base body 31 are all I-beams; the wing plates of the first cross beam base body 21 and the wing plates of the second cross beam base body 31 are locked to the wing plates of the longitudinal beam 1.

[0040] Specifically, the first cross beam base body 21 and the second cross beam base body 31 adopt the same cross beam base body; on the length of the longitudinal beam 1, the second cross beam 3 is located in the middle of the longitudinal beam 1 and is provided with two, and the first cross beam 2 is located on both sides of the second cross beam 3, one side is provided with two, and the load of the vehicle frame is reasonably distributed, the first cross beam base body 21 with the cross beam reinforcing piece 22 is arranged in the high load area to ensure the strength of the vehicle frame.

[0041] As shown in Figure 2 and Figure 3 Figure 3 The cross beam reinforcing piece 22 includes a reinforcing plate 221, a lining plate 222, a first reinforcing side plate 223 and a second reinforcing side plate 224.

[0042] The reinforcing plate 221 is L-shaped, and the reinforcing plate 221 includes a vertical plate 2211 and a horizontal plate 2212 connected perpendicularly to the vertical plate 2211, the horizontal plate 2212 is locked with one side of the pressing plate 231 of the first cross beam sealing plate 23, the vertical plate 2211 is locked with the connecting plate 232 of the first cross beam sealing plate 23, and one end of the vertical plate 2211 abuts against the pressing plate 231 away from one side of the horizontal plate 2212.

[0043] Specifically, the vertical plate 2211 is in the shape of an isosceles triangle, and the end abutting against the pressing plate 231 is in a horizontal state. The design of the isosceles triangle of the vertical plate 2211 not only ensures the supporting strength of the vertical plate 2211, but also reduces the consumption of materials to reduce the self-weight of the vehicle frame.

[0044] The locking of the first cross beam sealing plate 23 and the longitudinal beam 1 increases the connection area of the first cross beam 2 and the longitudinal beam 1 and improves the connection strength; and the arrangement of the first cross beam sealing plate 23 can strengthen the structure of the longitudinal beam 1, and the arrangement of the reinforcing plate 221 in the first cross beam sealing plate 23 can strengthen the structure of the first cross beam sealing plate 23.

[0045] The lining plate 222 is connected with the reinforcing plate 221, two lining plates 222 are arranged on the same reinforcing plate 221, the two lining plates 222 are respectively corresponding to the two sides of the web plate of the first cross beam base body 21, and the lining plates 222 have an installation gap matching the width of the web plate of the first cross beam base body 21 between them; and the lining plate 222 is locked with the web plate of the first cross beam base body 21.

[0046] Specifically, the lining plate 222 is bent towards the opposite side in the length direction of the first cross beam base body 21, so that the connection area of the lining plate 222 and the web plate of the first cross beam base body 21 is increased, and a plurality of locking holes are arranged along the bending arc of the lining plate 222, and the connecting lines of the plurality of locking holes form an arc, so that the locking is more uniform, the locking area is increased, and the locking fastening of different positions of the lining plate 222 and the web plate of the first cross beam base body 21 can be improved.

[0047] The gusset plate 222 located at the web side of the first beam base 21 is bent at both ends adjacent to the upper and lower flanges of the first beam base 21 and abuts against the upper and lower flanges of the first beam base 21 in parallel.

[0048] Specifically, the bent structure of the gusset plate 222 away from one end of the horizontal plate 2212 is a right triangle, and the vertical edges of the two bent structures of the gusset plate 222 away from one end of the horizontal plate 2212 are opposite to each other to form an isosceles triangle structure. When the first beam base 21 bears a lateral horizontal impact of the longitudinal beam 1, i.e. an impact in the length direction of the first beam base 21, the locking hole of the gusset plate 222 and the web of the first beam base 21 serve as a first pressure-bearing part, and the connection part of the gusset plate 222 and the vertical plate 2211 serves as a second pressure-bearing part, which includes the connection of the two bent structures of the gusset plate 222 away from one end of the horizontal plate 2212 and the vertical plate 2211, the connection of the two bent structures forming the base of the isosceles triangle and the vertical plate 2211, and the top angle of the isosceles triangle formed by the two bent structures being in the same vertical plane as the locking hole of the gusset plate 222 and the web of the first beam base 21. The stable isosceles triangle formed by the two bent structures effectively resists the lateral horizontal impact of the longitudinal beam 1.

[0049] The horizontal plate 2212 is provided with a limiting opening 2213 opening towards the first beam base 21, and the opening width of the limiting opening 2213 matches the flange width of the first beam base 21.

[0050] A plurality of first reinforcing side plates 223 are arranged along the length direction of the horizontal plate 2212, one side of the first reinforcing side plate 223 is connected with the vertical plate 2211, and the other side is connected with the horizontal plate 2212.

[0051] The limiting opening 2213 is provided with a first reinforcing side plate 223 on both sides, and the first reinforcing side plate 223 abuts against the side surface of the flange of the first beam base 21; one end of the gusset plate 222 close to the horizontal plate 2212 is connected with the first reinforcing side plate 223.

[0052] The second reinforcing side plate 224 is arranged on the first beam base 21; the second reinforcing side plate 224 is in an L shape, one side of the second reinforcing side plate 224 is locked with the web of the first beam base 21, and the other side is locked with the flange of the first beam base 21; the two ends of the second reinforcing side plate 224 along the length direction abut against the gusset plate 222.

[0053] The working principle of the present application is: according to the load of the frame, the relative positions of the first cross beam 2 and the second cross beam 3 with the cross beam reinforcing member 22 on the longitudinal beam 1 are reasonably arranged, so as to realize the lightweight structure while improving the strength of the frame. The cooperation of the same cross beam base body and the cross beam reinforcing member 22 as an additional assembly part realizes the unification of the cross beams on the same frame, avoids the complicated process, increases the cost and the use of excessive equipment caused by processing different cross beams.

[0054] In the arrangement of the first cross beam 2, the first cross beam sealing plate 23, the cross beam reinforcing member 22 and the first cross beam base body 21 are assembled first; the vertical plate 2211 of the reinforcing plate 221 of the cross beam reinforcing member 22 is locked with the connecting plate 232 of the first cross beam sealing plate 23, and the horizontal plate 2212 is locked with the pressing plate 231 of the first cross beam sealing plate 23; and the lining plate 222 and the first reinforcing side plate 223 are formed as an integral bending structure on the reinforcing plate 221, and the first reinforcing side plate 223 is used to strengthen the structure of the reinforcing plate 221. The gap between the two lining plates 222 is used as the positioning and locking space of the web of the first cross beam base body 21, and the limiting opening 2213 on the horizontal plate 2212 is used as the positioning and locking space of the wing plate of the first cross beam base body 21, the first cross beam base body 21 is inserted towards the reinforcing plate 221, and the rapid positioning and assembly of the first cross beam base body 21 is completed; then the lining plate 222 is locked with the web of the first cross beam base body 21; the above assembly is repeated, so that the two ends of the first cross beam base body 21 are locked with the corresponding first cross beam sealing plate 23 and lining plate 222 respectively; then the two second reinforcing side plates 224 are respectively arranged on the two sides of the web of the first cross beam base body 21, and the two sides of the L-shaped second reinforcing side plate 224 are respectively locked with the web and the wing plate of the first cross beam base body 21, and the two ends of the second reinforcing side plate 224 are simultaneously abutted with the corresponding lining plate 222. The first cross beam sealing plate 23, the reinforcing plate 221, the lining plate 222, the first reinforcing side plate 223 and the second reinforcing side plate 224 form the reinforcing structure when the cross beam and the longitudinal beam 1 are connected. Finally, the first cross beam sealing plate 23 is locked with the web and the wing plate of the longitudinal beam 1, and the assembly of the first cross beam 2 is completed. The first cross beam sealing plate 23 is used as the reinforcing structure of the longitudinal beam 1, the reinforcing plate 221 is used as the reinforcing structure of the first cross beam sealing plate 23, the first reinforcing side plate 223 is used as the reinforcing structure of the reinforcing plate 221, the lining plate 222 and the second reinforcing side plate 224 are used as the reinforcing structure of the first cross beam base body 21, and the multi-level reinforcing structure arrangement makes the overall frame have better impact resistance and high load performance.

[0055] In the arrangement of the second cross beam 3, the assembly and connection of the second cross beam sealing plate 32, the second cross beam base body 31 and the longitudinal beam 1 are consistent with the arrangement mode of the first cross beam 2.

[0056] In summary, the application provides a full aluminum alloy welding-free frame structure assembly, through the design of the first cross beam and the second cross beam, different cross beam structures with different bearing capacities are used on the longitudinal beam, the bearing capacity of the frame is improved while the structure is lightweight, and the service life of the frame is improved; through the design of the cross beam reinforcing piece of the first cross beam in the high load area, the connection strength of the cross beam and the longitudinal beam is improved through the multi-point connection of the cross beam reinforcing piece.

[0057] The above is only an embodiment of the application, and does not limit the patent scope of the application, and any equivalent transformation or direct or indirect application in the related technical field by using the content of the specification and drawings of the application is also included in the patent protection scope of the application.

Claims

1. An all-aluminum alloy, weldless frame structure assembly, characterized by, The beam assembly comprises a longitudinal beam and a cross beam assembly, the cross beam assembly comprises a first cross beam and a second cross beam, the first cross beam comprises a first cross beam base and a cross beam reinforcing piece, the first cross beam base is locked with a high load area on the longitudinal beam, the cross beam reinforcing piece is locked with the side surface of the first cross beam base and the longitudinal beam, the second cross beam comprises a second cross beam base, and the second cross beam base is locked with a low load area on the longitudinal beam; The longitudinal beam, the first cross beam base and the second cross beam base are all I-shaped beams, the flanges of the first cross beam base and the second cross beam base are locked with the flanges of the longitudinal beam, and the cross beam reinforcing piece is locked with the web of the first cross beam base and the flanges of the longitudinal beam; The cross beam reinforcing piece comprises a reinforcing plate, the reinforcing plate is in an L shape, the reinforcing plate comprises a vertical plate and a horizontal plate connected with the vertical plate perpendicularly, the horizontal plate is locked with one side flange of the longitudinal beam, the vertical plate is locked with the web of the longitudinal beam, and one end of the vertical plate is abutted with the flange away from the horizontal plate; The cross beam reinforcing piece further comprises a lining plate, the lining plate is connected with the reinforcing plate, two lining plates are arranged on the same reinforcing plate, the two lining plates are respectively arranged on the two sides of the web of the first cross beam base, and the two lining plates are provided with an installation gap matching the width of the web of the first cross beam base; The lining plate on the side of the web of the first cross beam base is bent and abutted with the upper and lower flanges of the first cross beam base in parallel; The horizontal plate is provided with a limiting opening opening towards the first cross beam base, and the opening width of the limiting opening matches the width of the flange of the first cross beam base.

2. The all-aluminum alloy weldless chassis structure assembly of claim 1, wherein, The cross beam reinforcing piece further comprises a plurality of first reinforcing side plates arranged at intervals along the length direction of the horizontal plate, one side of the first reinforcing side plate is connected with the vertical plate, and the other side is connected with the horizontal plate.

3. The all-aluminum alloy weldless chassis structure assembly of claim 2, wherein, The two sides of the limiting opening are provided with the first reinforcing side plates, the first reinforcing side plates are abutted with the side surface of the flange of the first cross beam base, and one end of the lining plate close to the horizontal plate is connected with the first reinforcing side plate.

4. The all-aluminum alloy weldless frame structure assembly of claim 3, wherein, The first cross beam further comprises a first cross beam sealing plate, the first cross beam sealing plate is in a C shape, the first cross beam sealing plate comprises two parallel pressing plates and a connecting plate connected perpendicularly between the two pressing plates, the pressing plates are locked with the flanges of the longitudinal beam, the connecting plate is locked with the web of the longitudinal beam, the cross beam reinforcing piece and the first cross beam base are arranged between the two pressing plates, the horizontal plate is locked with the pressing plate, the vertical plate is locked with the connecting plate, one end of the vertical plate is abutted with the pressing plate away from the horizontal plate, and the flange of the first cross beam base is locked with the pressing plate.

5. The all-aluminum alloy weldless chassis structure assembly of claim 1, wherein, The cross beam reinforcing piece further comprises a second reinforcing side plate, the second reinforcing side plate is arranged on the first cross beam base, the second reinforcing side plate is in an L shape, one side of the second reinforcing side plate is locked with the web of the first cross beam base, the other side is locked with the flange of the first cross beam base, and the two ends of the second reinforcing side plate along the length direction are abutbed with the lining plate.

Images