Frame assembly and vehicle

Abstract

The vehicle frame assembly comprises a first vehicle frame and a second vehicle frame, the first vehicle frame is provided with a first longitudinal beam and a first cross beam adjusting part which are connected with each other, the second vehicle frame is provided with a second longitudinal beam and a second cross beam adjusting part which are connected with each other, and the first vehicle frame and the second vehicle frame are stacked up and down. And the first frame is detachably connected to the second frame through the first cross beam adjusting part and the second cross beam adjusting part. The vehicle frame assembly can meet the installation matching requirements of other functional devices of the vehicle, and the overall production cost is low.

Description

Technical Field

[0001] The present application belongs to the technical field of vehicle body safety, and in particular, relates to a frame assembly and a vehicle. Background Art

[0002] As light trucks use new energy batteries as a power source, new requirements are also put forward for the structure of the frame. The width of the frame needs to match the size of other different functional devices included in the vehicle, including but not limited to battery packs, cabs, controllers, heat exchange structures, etc. Taking the installation of battery packs and cabs as an example, the frame not only needs to match the size of the battery pack, but also needs to meet the installation requirements of the cab. As a result, during the frame design process, the front and rear widths of the frame are often required to be different, and the width of the frame can be adjusted according to the size of the matching functional devices. At the same time, since the distance between the battery pack and the chassis of the car will affect the safety performance of the car, the distance between the battery pack and the chassis of the car needs to be taken into account during the frame design process.

[0003] However, the frame in the related art mainly achieves height and width changes of the frame through a stamping process. However, when forming the frame using the stamping process, its height and width changes need to rely on the design of mold tooling. Frames of different sizes need to correspond to different mold tooling. At the same time, due to the limitations of the stamping process, there will be a situation where the front end safety margin or the rear end safety margin of the frame is too large. All of the above will lead to the problem of excessively high production costs of the frame. Utility Model Content

[0004] The embodiments of the present application provide a frame assembly and a vehicle, wherein the frame assembly can meet the installation and matching requirements with other functional components of the vehicle and has a low overall production cost.

[0005] On the one hand, an embodiment of the present application provides a frame assembly, including: a first frame, having a first longitudinal beam and a first cross beam adjustment portion connected to each other, and a second frame, having a second longitudinal beam and a second cross beam adjustment portion connected to each other, wherein the first frame and the second frame are stacked up and down, and the first frame is detachably connected to the second frame via the first cross beam adjustment portion and the second cross beam adjustment portion.

[0006] In some embodiments, the first beam adjustment portion and / or the second beam adjustment portion includes a plurality of beams arranged parallel to each other, and the plurality of beams are beams of variable cross-section.

[0007] In some embodiments, the cross beam includes a main body and a connecting portion, the absolute value of the difference between the height of the main body and the height of the connecting portion is greater than zero, the connecting portion is arranged on both sides of the main body, one end of the connecting portion is connected to the main body, and the other end is connected to the first longitudinal beam or the second longitudinal beam, and the first longitudinal beam is detachably connected to the second longitudinal beam through the main body of the first cross beam adjusting portion and the main body of the second cross beam adjusting portion.

[0008] In some embodiments, the frame assembly further includes a height adjustment member, which is clamped between the first cross beam adjustment portion and the second cross beam adjustment portion and is adjustable in height in a first direction.

[0009] In some embodiments, the height adjustment member includes more than two adjustment plates, each of which can be detachably connected to the first beam adjustment portion and the second beam adjustment portion, and the absolute value of the difference in thickness between at least two adjustment plates is greater than zero.

[0010] In some embodiments, the height adjustment member includes a telescopic cylinder, which is clamped between the first beam adjustment portion and the second beam adjustment portion and is adjustable in height in the first direction.

[0011] In some embodiments, a reinforcing crossbeam is disposed between adjacent crossbeams of the second crossbeam adjusting portion, and two ends of the reinforcing crossbeam are detachably connected to the adjacent crossbeams.

[0012] In some embodiments, the frame assembly further includes a first reinforcement plate and / or a second reinforcement plate, the first reinforcement plate is detachably connected to the first cross beam adjustment portion and / or the second cross beam adjustment portion, and the second reinforcement plate is detachably connected to the second frame.

[0013] In some embodiments, the frame assembly also includes a second connecting member, and along the third direction, second connecting members are provided on both sides of the first cross beam adjustment portion and the second cross beam adjustment portion, and each second connecting member is detachably connected to the first longitudinal beam and the second longitudinal beam located on the same side and at the outermost side.

[0014] On the other hand, an embodiment of the present application provides a vehicle, comprising: a frame assembly as in any of the aforementioned embodiments; a battery pack, disposed on a second frame and connected to a second longitudinal beam; and a cab, disposed on a first frame and connected to a first longitudinal beam.

[0015] According to the frame assembly and vehicle provided in the present application, the frame assembly includes a first frame and a second frame. The first frame has a first longitudinal beam and a first cross beam adjustment portion connected to each other, and the second frame has a second longitudinal beam and a second cross beam adjustment portion connected to each other. The first frame and the second frame are stacked up and down, and the first frame is detachably connected to the second frame through the first cross beam adjustment portion and the second cross beam adjustment portion, thereby increasing the adjustment amount in the height direction of the frame assembly. In addition, the detachable connection method of the adjustment frame, the front frame and the rear frame of the frame assembly allows the three to be produced separately without the need to develop molds. At the same time, it can avoid the situation where the front end safety margin or the rear end safety margin of the frame is too large, thereby reducing the production cost of the frame assembly on the basis of meeting the installation matching requirements of the frame assembly and other functional components of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The features, advantages and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

[0017] Figure 1 is a schematic structural diagram of a vehicle frame assembly provided in some embodiments of the present application;

[0018] Figure 2 is an exploded view of a frame assembly provided in some embodiments of the present application;

[0019] Figure 3 is an exploded view of a second cross beam and a rear frame provided in some embodiments of the present application;

[0020] Figure 4 It is an exploded view of the first cross beam and the front frame provided in some embodiments of the present application.

[0021] Marking Description:

[0022] 1. first vehicle frame; 11. first longitudinal beam; 111. first support rod; 112. first connecting rod; 113. first longitudinal beam connecting hole; 12. first cross beam adjusting portion;

[0023] 2. second vehicle frame; 21. second longitudinal beam; 211. second support rod; 212. second connecting rod; 213. second longitudinal beam connecting hole; 22. second cross beam adjusting portion; 221. cross beam; 2211. support rod; 2212. connecting rod; 2213. cross beam connecting hole;

[0024] 3. Strengthen the crossbeam; 31. Strengthen the support rod; 32. Strengthen the connecting rod; 33. The first weight reduction hole; 34. Strengthen the crossbeam connecting hole;

[0025] 4. Height adjustment member; 41. Second weight reduction hole; 42. Adjustment plate connection hole;

[0026] 5. The first reinforcement plate;

[0027] 6. Second reinforcement plate;

[0028] 7. Second connecting piece;

[0029] 8. Second longitudinal beam connecting piece;

[0030] X-first direction; Y-second direction; Z-third direction.

[0031] In the drawings, the same reference numerals are used for the same components. The drawings are not drawn to scale. DETAILED DESCRIPTION

[0032] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present invention, rather than to limit the present invention. For those skilled in the art, the present invention can be implemented without the need for some of these specific details. The following description of the embodiments is only intended to provide a better understanding of the present invention by illustrating examples of the present invention.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0034] First, see Figure 1 and Figure 2 The embodiment of the present application provides a frame assembly, which includes a first frame 1 and a second frame 2. The first frame 1 has a first longitudinal beam 11 and a first cross beam adjusting portion 12 connected to each other, and the second frame 2 has a second longitudinal beam 21 and a second cross beam adjusting portion 22 connected to each other, wherein the first frame 1 and the second frame 2 are stacked up and down, and the first frame 1 is detachably connected to the second frame 2 through the first cross beam adjusting portion 12 and the second cross beam adjusting portion 22.

[0035] The frame assembly can be a frame structure straddling the front and rear axles of the vehicle, and is the base of the vehicle. The first frame 1 and the second frame 2 are used to fix and install functional components.

[0036] The first frame 1 and the second frame 2 are stacked up and down, which can be understood as the two being stacked in the first direction X. The first longitudinal beam 11 and the second longitudinal beam 21 both extend along the second direction Y.

[0037] The first frame 1 is detachably connected to the second frame 2 via the first crossbeam adjusting portion 12 and the second crossbeam adjusting portion 22. The detachable connection may be detachably connected by fastening with fasteners such as bolts, or may be detachably connected by partially extending one into the other for snap-fitting.

[0038] The first frame 1 may include two first longitudinal beams 11 spaced apart and connected to each other along the third direction Z, and the second frame 2 includes two second longitudinal beams 21 spaced apart and connected to each other along the third direction Z. Of course, in some other optional embodiments, the first frame 1 may also include three or more first longitudinal beams 11 spaced apart and connected to each other along the third direction Z. Correspondingly, the second frame 2 may also include three or more second longitudinal beams 21 spaced apart and connected to each other along the third direction Z.

[0039] The angle between any two of the first direction X, the second direction Y and the third direction Z may be 80°-100°, or 90°, and the first direction X, the second direction Y and the third direction Z may be perpendicular to each other.

[0040] A frame assembly and a vehicle provided in one embodiment of the present application, the frame assembly includes a first frame 1 and a second frame 2. The first frame 1 has a first longitudinal beam 11 and a first cross beam adjustment portion 12 connected to each other, and the second frame 2 has a second longitudinal beam 21 and a second cross beam adjustment portion 22 connected to each other. The first frame 1 and the second frame 2 are stacked up and down, and the first frame 1 is detachably connected to the second frame 2 through the first cross beam adjustment portion 12 and the second cross beam adjustment portion 22, thereby increasing the adjustment amount in the height direction of the frame assembly. In addition, the detachable connection method of the adjustment frame, the front frame and the rear frame of the frame assembly allows the three to be produced separately without developing molds, and at the same time, it can avoid the situation where the front end safety margin or the rear end safety margin of the frame is too large, thereby reducing the production cost of the frame assembly on the basis of meeting the installation matching requirements of the frame assembly and other functional components of the vehicle.

[0041] In some embodiments, reference Figure 2 and Figure 3The first crossbeam adjusting portion 12 and / or the second crossbeam adjusting portion 22 include a plurality of crossbeams 221 arranged in parallel to each other, and the plurality of crossbeams 221 are variable-section crossbeams 221. A variable-section crossbeam refers to a crossbeam whose cross section changes along the axial direction. The first crossbeam adjusting portion 12 and / or the second crossbeam adjusting portion 22 include a plurality of crossbeams 221 arranged in parallel to each other, which can be understood as the first crossbeam adjusting portion 12 and / or the second crossbeam adjusting portion 22 include a plurality of crossbeams 221 arranged in parallel to each other along the third direction Z.

[0042] The frame assembly provided in one embodiment of the present application can adjust the spacing between the first longitudinal beam 11 and the second longitudinal beam 21 along the first direction X at the lowest cost by setting multiple cross beams 221 as variable-section cross beams.

[0043] In some embodiments, the crossbeam 221 includes a main body and a connecting part, the absolute value of the difference between the height of the main body and the height of the connecting part is greater than zero, the connecting part is arranged on both sides of the main body, one end of the connecting part is connected to the main body, and the other end is connected to the first longitudinal beam 11 or the second longitudinal beam 21, and the first longitudinal beam 11 is detachably connected to the second longitudinal beam 21 through the main body of the first crossbeam adjusting part 12 and the main body of the second crossbeam adjusting part 22. It should be noted that the height of the main body and the height of the connecting part can be understood as the height along the first direction X. The absolute value of the difference between the height of the main body and the height of the connecting part is greater than zero, which can be understood as that the height of the main body can be greater than the height of the connecting part, and similarly, the height of the connecting part can also be greater than the height of the main body. When the height of the connecting part is greater than that of the main body, the distance between the first longitudinal beam 11 and the second longitudinal beam 21 becomes smaller, and when the height of the main body is greater than that of the connecting part, the distance between the first longitudinal beam 11 and the second longitudinal beam 21 becomes larger.

[0044] In some embodiments, see Figure 2 The frame assembly also includes a height adjusting member 4, which is clamped between the first crossbeam adjusting portion 12 and the second crossbeam adjusting portion 22 and is adjustable in height in the first direction X.

[0045] The height adjustment member 4 is used to adjust the distance between the first beam adjustment portion 12 and the second beam adjustment portion 22 in the first direction X. The height adjustment member 4 includes but is not limited to a pad block, a pad plate, a telescopic cylinder, and the like.

[0046] A frame assembly provided in an embodiment of the present application realizes distance adjustment between the first beam adjustment portion 12 and the second beam adjustment portion 22 by setting a height adjustment member 4 between the first beam adjustment portion 12 and the second beam adjustment portion 22, thereby realizing distance adjustment between the functional component and the vehicle chassis.

[0047] In some embodiments, the height adjustment member 4 includes more than two adjustment plates, each of which can be detachably connected to the first beam adjustment portion 12 and the second beam adjustment portion 22, and the absolute value of the difference in thickness between at least two adjustment plates is greater than zero.

[0048] The number of adjustment plates included in the height adjustment member 4 may be two, three or more.

[0049] The absolute value of the difference in thickness between any two height adjustment members 4 can be made greater than zero. Of course, when the number of adjustment plates is more than three, the absolute value of the difference in thickness between two of the adjustment plates can be made greater than zero. At the same time, the thicknesses of a part of the adjustment plates can be made equal.

[0050] In a frame assembly provided by an embodiment of the present application, the height adjustment member 4 adopts the above-mentioned structural form, so that when the height adjustment member 4 is used, the spacing between the first beam adjustment portion 12 and the second beam adjustment portion 22 in the first direction X can be adjusted by replacing the adjustment plate, and the distance between the first beam adjustment portion 12 and the second beam adjustment portion 22 can also be adjusted by adjusting the number of adjustment plates clamped between the first beam adjustment portion 12 and the second beam adjustment portion 22, and the operation is convenient and quick. When in use, a suitable adjustment plate is selected according to actual needs, and the adjustment plate is placed between the first beam adjustment portion 12 and the second beam adjustment portion 22, and then the adjustment plate is detachably connected to the first beam adjustment portion 12 and the second beam adjustment portion 22 through the first connecting member, thereby realizing the adjustment of the spacing between the first beam adjustment portion 12 and the second beam adjustment portion 22 in the first direction X.

[0051] In some embodiments, please refer to FIG. Figure 4 The crossbeam 221 is provided with a crossbeam connection hole 2213, the adjustment plate is provided with an adjustment plate connection hole 42, and the adjustment plate is detachably connected to the first crossbeam adjustment portion 12 and the second crossbeam adjustment portion 22 through a third fastener penetrating through the adjustment plate connection hole 42 and the crossbeam connection hole 2213. The third fastener includes a bolt and a nut.

[0052] A frame assembly provided in an embodiment of the present application realizes quick disassembly and assembly of the first beam adjustment portion 12, the second beam adjustment portion 22 and the adjustment plate by providing a beam connection hole 2213 on the beam 221 and an adjustment plate connection hole 42 on the adjustment plate.

[0053] Understandably, see Figure 2, connecting the first beam adjustment portion 12 and the second beam adjustment portion 22 by setting an adjustment plate connecting hole 42 on the adjustment plate is only an optional implementation method. In some embodiments, the adjustment plate connecting hole 42 may not be set on the adjustment plate. When in use, a suitable adjustment plate is selected according to actual needs, and the adjustment plate is placed between the first beam adjustment portion 12 and the second beam adjustment portion 22, and then the first beam adjustment portion 12 and the second beam adjustment portion 22 are connected by bolts and nuts, and the first beam adjustment portion 12 and the second beam adjustment portion 22 are tightened with the adjustment plate to achieve a detachable connection of the adjustment plate to the first beam adjustment portion 12 and the second beam adjustment portion 22.

[0054] It is understandable that the above embodiments are all illustrated by taking the example that the height adjustment member 4 includes more than two adjustment plates, which is an optional implementation, but is not limited thereto. In some other optional embodiments, the padding member may also include a telescopic cylinder, which is clamped between the first beam adjustment portion 12 and the second beam adjustment portion 22 and is height-adjustable in the first direction X. The height adjustment member 4 may include only one of the adjustment plate and the telescopic cylinder. Of course, in some examples, the height adjustment member 4 may also include both the adjustment plate and the telescopic cylinder, and both may be supported together.

[0055] It should be noted that, as long as the height adjustment member 4 can achieve the spacing between the first beam adjustment portion 12 and the second beam adjustment portion 22 in the first direction X, the specific structure is not limited. Of course, if the height adjustment member 4 itself has a connecting structure, such as a telescopic cylinder with a clamping structure, which can be simultaneously connected to the first beam adjustment portion 12 and the second beam adjustment portion 22 and can adjust the distance between the first beam adjustment portion 12 and the second beam adjustment portion 22, then the height adjustment member 4 can also be used to achieve position adjustment between the first beam adjustment portion 12 and the second beam adjustment portion 22 and fix the relative position after adjustment.

[0056] In some embodiments, see Figure 3 and Figure 4 The first longitudinal beam 11 is provided with a first longitudinal beam connection hole 113, and the first longitudinal beam 11 is detachably connected to the first crossbeam adjustment portion 12 through a first fastener penetrating the first longitudinal beam connection hole 113 and the crossbeam connection hole 2213. The second longitudinal beam 21 is provided with a second longitudinal beam connection hole 213, and the second longitudinal beam 21 is detachably connected to the second crossbeam adjustment portion 22 through a second fastener penetrating the second longitudinal beam connection hole 213 and the crossbeam connection hole 2213. Optionally, the first fastener includes a bolt and a nut, and the second fastener includes a bolt and a nut.

[0057] In some embodiments, see Figure 1 and Figure 3A reinforcing crossbeam 3 is disposed between adjacent crossbeams 221 of the second crossbeam adjusting portion 22 , and both ends of the reinforcing crossbeam 3 are detachably connected to the adjacent crossbeams 221 .

[0058] In a vehicle frame assembly provided in one embodiment of the present application, a reinforcing crossbeam 3 is provided between adjacent crossbeams 221 of the second crossbeam adjusting portion 22 to improve the bearing strength of the second crossbeam adjusting portion 22 .

[0059] In some embodiments, see Figures 2 to 4 A plurality of reinforcing beams 3 are provided, and the plurality of reinforcing beams 3 are arranged at intervals along the third direction Z. The reinforcing beam 3 includes a reinforcing support rod 31 and two or more reinforcing connecting rods 32 spaced apart along the first direction X. The reinforcing support rod 31 and each reinforcing connecting rod 32 extend along the second direction Y. The two outermost reinforcing connecting rods 32 in the first direction X are respectively bent along the first direction X and connected to the two ends of the reinforcing support rod 31 in the first direction X. Reinforcing beam connecting holes 34 are provided on the two outermost first connecting rods 112 in the first direction X. The reinforcing beam 3 is detachably connected to the second beam adjusting portion 22 by penetrating the reinforcing beam connecting holes 34 and the beam connecting holes 2213.

[0060] Optionally, three reinforcing cross beams 3 are provided. Of course, in other embodiments, the number of reinforcing cross beams 3 and the number of reinforcing connecting rods 32 can be adjusted according to actual conditions.

[0061] In some embodiments, see Figure 3 A first weight-reducing hole 33 is provided on the reinforcing support rod 31 .

[0062] A frame assembly provided in an embodiment of the present application reduces the overall weight of the frame assembly by setting a first weight-reducing hole 33 on the reinforcing support rod 31 , thereby meeting the lightweight requirements of the vehicle.

[0063] In some embodiments, see Figure 1 and Figure 2 The frame assembly also includes a second connecting member 7. Along the third direction Z, second connecting members 7 are provided on both sides of the first cross beam adjusting portion 12 and the second cross beam adjusting portion 22. Each second connecting member 7 is detachably connected to the second longitudinal beam 21 located on the same side and at the outermost side and the first longitudinal beam 11, that is, the two ends of each second connecting member 7 are detachably connected to the first longitudinal beam 11 located at the outermost side and the second longitudinal beam 21 on the same side as the first longitudinal beam 11.

[0064] The frame assembly provided in one embodiment of the present application improves the connection strength between the adjustment frame and the first frame 1 and the second frame 2 by providing the second connecting member 7, while also being able to avoid stress concentration.

[0065] In some embodiments, the frame assembly further includes a first reinforcing plate 5 and / or a second reinforcing plate 6 , the first reinforcing plate 5 is detachably connected to the first crossbeam adjusting portion 12 and / or the second crossbeam adjusting portion 22 , and the second reinforcing plate 6 is detachably connected to the second frame 2 .

[0066] A frame assembly provided in an embodiment of the present application improves the connection strength between the first cross beam adjusting portion 12 and the second cross beam adjusting portion 22 by connecting the first reinforcing plate 5 to the first cross beam adjusting portion 12 and / or the second cross beam adjusting portion 22 .

[0067] A frame assembly provided in an embodiment of the present application improves the bearing strength of the second frame 2 by connecting the second reinforcement plate 6 to the second frame 2 .

[0068] Second, see Figures 1 to 4 The embodiment of the present application provides a vehicle, including the frame assembly, battery pack and cab provided in the above embodiments. The battery pack is arranged on the second frame 2 and connected to the second longitudinal beam 21, and the cab is arranged on the first frame 1 and connected to the first longitudinal beam 11.

[0069] The vehicle provided according to the present application includes the frame assembly, battery pack and cab provided in the above-mentioned embodiments. The battery pack is arranged on the second frame 2 and connected to the second longitudinal beam 21. The spacing between the two second longitudinal beams 21 located at the outermost sides in the third direction Z can be adjusted, so that the second frame 2 can be connected to battery packs of different sizes, thereby realizing that the frame assembly can adapt to battery packs of different sizes. The cab is arranged on the first frame 1 and connected to the first longitudinal beam 11. The spacing between the two first longitudinal beams 11 located at the outermost sides in the third direction Z can be adjusted, thereby realizing that the first frame 1 can be connected to cabs of different sizes, thereby realizing that the frame assembly can adapt to cabs of different sizes. By adjusting the distance between the first longitudinal beam 11 and the second longitudinal beam 21 along the first direction X, and then adjusting the distance between the battery pack and the chassis of the vehicle, the safety performance of the vehicle is improved.

[0070] In some embodiments, a first longitudinal beam 11 connector is provided on the first longitudinal beam 11, the cab is connected to the first longitudinal beam 11 connector, and / or, a second longitudinal beam connector 8 is provided on the second longitudinal beam 21, and the battery pack is connected to the second longitudinal beam connector 8. Exemplarily, the first longitudinal beam 11 connector is detachably connected to the first longitudinal beam 11, the cab is detachably connected to the first longitudinal beam 11 connector, the second longitudinal beam connector 8 is detachably connected to the second longitudinal beam 21, and the battery pack is detachably connected to the second longitudinal beam connector 8. The first longitudinal beam 11 connector is detachably connected to the first longitudinal beam 11, and can be detachably connected by fastening with fasteners such as bolts, or by partially extending one into the other for snap-fitting. The second longitudinal beam connector 8 is detachably connected to the second longitudinal beam 21, and can be detachably connected by fastening with fasteners such as bolts, or by partially extending one into the other for snap-fitting. The cab is detachably connected to the first longitudinal beam 11 connector, and can be detachably connected by fastening with bolts or other fasteners. The battery pack is detachably connected to the second longitudinal beam connector 8, and can be detachably connected by fastening with bolts or other fasteners.

[0071] When the first longitudinal beam 11 connecting part is damaged, it is only necessary to remove the first longitudinal beam 11 connecting part from the first longitudinal beam 11 and the cab for replacement, thereby avoiding the situation where the first longitudinal beam 11 connecting part is damaged and the first longitudinal beam 11 cannot be used, thereby reducing costs. Similarly, when the second longitudinal beam connecting part 8 is damaged, it is only necessary to remove the second longitudinal beam connecting part 8 from the second longitudinal beam 21 and the battery pack for replacement.

[0072] In some optional embodiments, the first longitudinal beam 11 connection member may optionally adopt a connection frame or a connection plate, and the second longitudinal beam connection member 8 may optionally adopt a connection frame or a connection plate.

[0073] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A vehicle frame assembly, characterized in that: include: The first frame has a first longitudinal beam and a first cross beam adjustment portion connected to each other, The second frame has a second longitudinal beam and a second cross beam adjustment portion connected to each other, The first frame and the second frame are stacked up and down, and the first frame is detachably connected to the second frame through the first crossbeam adjusting portion and the second crossbeam adjusting portion.

2. The frame assembly according to claim 1, characterized in that: The first crossbeam adjusting portion and / or the second crossbeam adjusting portion comprises a plurality of crossbeams arranged in parallel with each other, and the plurality of crossbeams are crossbeams with variable cross-sections.

3. The frame assembly according to claim 2, characterized in that: The cross beam includes a main body and a connecting part, the absolute value of the difference between the height of the main body and the height of the connecting part is greater than zero, the connecting part is arranged on both sides of the main body, one end of the connecting part is connected to the main body, and the other end is connected to the first longitudinal beam or the second longitudinal beam, and the first longitudinal beam is detachably connected to the second longitudinal beam through the main body of the first cross beam adjusting part and the main body of the second cross beam adjusting part.

4. The vehicle frame assembly according to claim 1, characterized in that: The frame assembly further includes a height adjusting member, which is clamped between the first crossbeam adjusting portion and the second crossbeam adjusting portion and is adjustable in height in a first direction.

5. The vehicle frame assembly according to claim 4, characterized in that: The height adjustment member includes more than two adjustment plates, each of which can be detachably connected to the first beam adjustment portion and the second beam adjustment portion, and the absolute value of the difference in thickness between at least two of the adjustment plates is greater than zero.

6. The vehicle frame assembly according to claim 4, characterized in that: The height adjustment member includes a telescopic cylinder, which is clamped between the first beam adjustment portion and the second beam adjustment portion and is adjustable in height in the first direction.

7. The vehicle frame assembly according to claim 1, characterized in that: A reinforcing crossbeam is arranged between adjacent crossbeams of the second crossbeam adjusting portion, and two ends of the reinforcing crossbeam are respectively detachably connected to the adjacent crossbeams.

8. The vehicle frame assembly according to claim 1, characterized in that: The frame assembly further includes a first reinforcing plate and / or a second reinforcing plate, wherein the first reinforcing plate is detachably connected to the first crossbeam adjusting portion and / or the second crossbeam adjusting portion, and the second reinforcing plate is detachably connected to the second frame.

9. The vehicle frame assembly according to claim 1, characterized in that: The frame assembly also includes a second connecting member. Along the third direction, the second connecting members are provided on both sides of the first crossbeam adjusting portion and the second crossbeam adjusting portion, and each of the second connecting members is detachably connected to the first longitudinal beam and the second longitudinal beam located on the same side and at the outermost sides.

10. A vehicle, characterized in that: include: The frame assembly according to any one of claims 1 to 9; A battery pack, disposed on the second frame and connected to the second longitudinal beam; A cab is arranged on the first frame and connected to the first longitudinal beam.

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