Frame assembly and vehicle

Abstract

The application provides a vehicle frame assembly and a vehicle. The vehicle frame assembly comprises a vehicle frame, a front suspension, a first fixing member and a second fixing member. The cross beam of the vehicle frame connects a pair of longitudinal beams of the vehicle frame. The cross beam comprises a vertical front side wall and an upper side wall. The front side wall and the upper side wall both extend along the length direction of the cross beam. The upper side wall is provided with a first hole, and the front side wall is provided with a second hole. The front suspension comprises a first fixing part and a second fixing part connected with the first fixing part. The first fixing part is provided with a third hole, and the second fixing part is provided with a fourth hole. When the front suspension is fixed with the cross beam, the first fixing part is located outside the upper side wall, the second fixing part is located outside the front side wall, the first fixing member is assembled in the third hole and the first hole to fix the first fixing part with the upper side wall, and the second fixing member is assembled in the fourth hole and the second hole to fix the second fixing part with the front side wall. The front suspension and the cross beam establish an X / Z bidirectional force transmission path, thereby enhancing the bending stiffness of the cross beam, reducing plastic deformation and significantly improving the bending resistance.

Description

Technical Field

[0001] This application relates to the field of chassis assembly, and more particularly to chassis assembly and vehicles. Background Technology

[0002] The front suspension, cab, and frame are crucial components of a vehicle's structure, working together to influence performance and safety. The front suspension absorbs the impact energy generated by wheels traveling on uneven surfaces and distributes this energy throughout the suspension system, cushioning impacts from rough roads, powertrain vibrations, and collisions to the cab, ensuring a smooth ride and improving passenger comfort. However, existing front suspensions, when fixed to the frame's crossbeams, suffer from issues with the crossbeams' poor bending resistance. Utility Model Content

[0003] This application provides a frame assembly and vehicle that improves the bending resistance of crossbeams.

[0004] This application provides a vehicle frame assembly, including a frame, a front mount, a first fixing member, and a second fixing member. The frame includes a crossbeam and a pair of longitudinal beams. The crossbeam connects the pair of longitudinal beams. The crossbeam includes a vertical front sidewall and an upper sidewall, both of which extend along the length of the crossbeam. The upper sidewall has a first hole, and the front sidewall has a second hole. The front mount includes a first fixing part and a second fixing part connected to the first fixing part. The first fixing part has a third hole, and the second fixing part has a fourth hole. When the front mount is fixed to the crossbeam, the first fixing part is located outside the upper sidewall, and the second fixing part is located outside the front sidewall. The first fixing member is assembled in the third hole and the first hole to fix the first fixing part to the upper sidewall. The second fixing member is assembled in the fourth hole and the second hole to fix the second fixing part to the front sidewall.

[0005] Furthermore, the front suspension includes a support fixed to the first fixing part and a bracket fixed to the support. The bracket is provided with a mounting hole, the axial direction of which is in the same direction as the length direction of the crossbeam. Along the top-to-bottom direction, the bracket, the support, the first fixing part and the crossbeam are arranged in sequence.

[0006] Furthermore, the front suspension includes a reinforcing plate. Along the length direction of the crossbeam, the reinforcing plate is located on one side of the support. The reinforcing plate has a first side extending along the length direction of the crossbeam and a second side adjacent to the first side. The first side is fixed to the first fixing part, and the second side is fixed to the support.

[0007] Furthermore, the support includes a main body fixed to the first fixing part and a reinforcing part extending from the main body. The bracket is fixed to the main body, and the reinforcing part and the main body are fixed to the first fixing part. The reinforcing part and the reinforcing plate are located on opposite sides of the main body.

[0008] Furthermore, the main body is U-shaped, including a first plate-shaped part and a second plate-shaped part connected to the first plate-shaped part, the reinforcing part is connected to the first plate-shaped part, and the reinforcing plate is fixed to the second plate-shaped part.

[0009] Furthermore, the first fixing part is provided with a first weight-reducing hole; and / or,

[0010] The reinforcing plate is provided with a second weight-reducing hole; and / or,

[0011] The first plate-shaped portion is provided with a third weight-reducing hole; and / or,

[0012] The second plate-shaped portion is provided with a fourth weight-reducing hole; and / or

[0013] The reinforcing section is provided with a fifth weight-reducing hole.

[0014] Furthermore, the second fixing part is integrally formed with the first fixing part.

[0015] Furthermore, the second fixing part is integrally disposed with the first fixing part, and the second fixing part is fixed to the support.

[0016] Furthermore, the frame assembly includes a third fastener, the second fastener has a fifth hole, the support has a sixth hole, and the third fastener is assembled in the fifth hole and the sixth hole to fix the second fastener and the support.

[0017] Furthermore, the second fixing part is elongated and includes a first fixing section and a second fixing section. The first fixing section is located on the outside of the front sidewall and fixed to the front sidewall, and the second fixing section is located on the outside of the support and fixed to the support.

[0018] This application also provides a vehicle, including a cab and the frame assembly, wherein the cab is connected to the front suspension.

[0019] In this embodiment, when the front suspension is fixed to the crossbeam of the frame assembly, its first fixing part is fixed to the upper side wall of the crossbeam, and its second fixing part is fixed to the front side wall of the crossbeam, establishing an X / Z bidirectional force transmission path, enhancing the bending stiffness of the crossbeam, reducing plastic deformation, and significantly improving bending resistance. The front suspension is fixed to the crossbeam through the first and second fixing parts, facilitating the assembly and disassembly of the front suspension, so that the front suspension can be switched between two modes: fixed to the crossbeam and fixed to the longitudinal beam. The vehicle cab can share the same frame in both tiltable and non-tiltable modes, shortening the development cycle and reducing development costs. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a vehicle frame assembly according to an embodiment of this application, wherein only a portion of the vehicle frame is shown;

[0021] Figure 2 yes Figure 1 A schematic diagram of another view of the frame assembly, in which only a portion of the frame is shown;

[0022] Figure 3 yes Figure 1 A schematic diagram of the front suspension of the chassis assembly shown;

[0023] Figure 4 yes Figure 3 An exploded view of the front suspension is shown, in which the bracket is not shown;

[0024] Figure 5 yes Figure 4 A schematic diagram of the front suspension support shown;

[0025] Figure 6 yes Figure 3 A schematic diagram showing another perspective of the front suspension;

[0026] Figure 7 yes Figure 6 The top view of the front overhang is shown;

[0027] Figure 8 yes Figure 3 A schematic diagram showing another perspective of the front suspension;

[0028] Figure 9 yes Figure 1 A schematic diagram of another embodiment of the frame assembly shown.

[0029] Explanation of the reference numerals in the drawings: Frame, 1; Cross beam, 11; Front side wall, 111; Upper side wall, 112; Lower side wall, 113; Longitudinal beam, 12; Top wall, 121; Bottom wall, 122; Outer side wall, 123; Front mount, 2; First fixing part, 21; Third hole, 211; First weight reduction hole, 212; Second fixing part, 22; Fourth hole, 221; First fixing section, 223; Second fixing section, 224; Flange, 225; Mounting seat, 23; Support, 24; Main body part, 241; First plate-like part, 2411; Second plate-like part, 2412; Connecting part, 2413; Third weight reduction hole, 2414; Fourth weight reduction hole, 2415; Reinforcement part, 242; Fifth weight reduction hole, 2421; Bracket, 25; Mounting hole, 251; Reinforcement plate, 26; First side, 260; Second side, 261; Second weight reduction hole, 262; Base part, 263; Positioning part, 264; First fixing member, 3; Second fixing member, 4; Third fixing member, 5. Detailed implementation manners

[0030] Here, the technical solutions in the embodiments (or "embodiments") of the present application will be clearly and completely described in conjunction with the accompanying drawings. When the following description involves the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0031] If there are terms related to directional indications or positional relationships in the embodiments of the present application (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movement conditions between components in a specific posture (as shown in the accompanying drawings); if this specific posture changes, then the directional indication or positional relationship will also change accordingly. In addition, the terms "first", "second", etc. involved in the embodiments of the present application are only for the purpose of convenient description and cannot be understood as indicating or implying relative importance.

[0032] Refer Figures 1 to 2 , the embodiments of the present application provide a frame assembly, including a frame 1, a front mount 2, a first fixing member 3 and a second fixing member 4. The embodiments of the present application also provide a vehicle, including a cab (not shown) and the frame assembly, and the cab is connected to the front mount 2.

[0033] The frame 1 includes a cross beam 11 and a pair of longitudinal beams 12. The cross beam 11 connects the pair of longitudinal beams 12. Along the width direction of the vehicle ( Figure 1In the Y direction, a pair of the longitudinal beams 12 are located on opposite sides of the cross beam 11. The cross beam 11 includes a vertical front side wall 111 and an upper side wall 112. Both the front side wall 111 and the upper side wall 112 extend along the length direction of the cross beam 11. Along the height direction of the vehicle, the upper side wall 112 faces upward of the vehicle ( Figure 1 in the direction opposite to the Z direction in the figure). Along the length direction of the vehicle, the front side wall 111 faces forward of the vehicle ( Figure 1 in the direction opposite to the X direction in the figure).

[0034] In one embodiment, the cross beam 11 is U-shaped and further includes a lower side wall 113 disposed opposite to the upper side wall 112.

[0035] In one embodiment, the cross beam 11 is a closed square frame and further includes a lower side wall 113 disposed opposite to the upper side wall 112 and a rear side wall (not shown) disposed opposite to the front side wall 111.

[0036] In one embodiment, the cross section of the longitudinal beam 12 is generally U-shaped, including a top wall 121, a bottom wall 122 disposed opposite to the top wall 121, and an outer side wall 123 connecting the top wall 121 and the bottom wall 122. The end of the cross beam 11 is located between the top wall 121 and the bottom wall 122. The upper side wall 112 is fixed to the top wall 121, the lower side wall 113 is fixed to the bottom wall 122, and the outer side wall 123 is located outside the cross beam 11.

[0037] In another embodiment, the longitudinal beam 12 includes an inner side wall disposed opposite to the outer side wall 123, and the end of the cross beam 1 is abutted against the inner side wall.

[0038] In one embodiment, the upper side wall 112 is provided with a first hole (not shown), and the front side wall 111 is provided with a second hole (not shown).

[0039] Refer Figures 1 to 3 , the vehicle frame assembly includes a pair of the front mounts 2. A pair of the front mounts 2 are respectively fixed to opposite ends of the cross beam 11. The cab is connected to a pair of the front mounts 2, and the cab cannot be flipped.

[0040] A pair of the front mounts 2 can also be respectively fixed to a pair of the longitudinal beams 12. The vehicle frame assembly includes a rotating rod (not shown) fixed to a pair of the front mounts 2 and a bearing bracket (not shown) connected to the rotating rod. The cab is connected to the bearing bracket, and the cab can be flipped, which provides convenience for vehicle maintenance, repair, and component inspection.

[0041] The front suspension 2 includes a first fixing part 21 and a second fixing part 22 connected to the first fixing part 21. The connection includes direct connection and indirect connection. Figure 3 In this configuration, the first fixing part 21 and the second fixing part 22 are directly connected. Figure 9 In this configuration, the first fixing part 21 and the second fixing part 22 are indirectly connected.

[0042] The first fixing part 21 has a third hole 211, and the second fixing part 22 has a fourth hole 221. When the front suspension 2 is fixed to the crossbeam 11, the first fixing part 21 is located outside the upper sidewall 112, and the second fixing part 22 is located outside the front sidewall 111. The first fixing member 3 is assembled in the third hole 211 and the first hole to fix the first fixing part 21 to the upper sidewall 112. The second fixing member 4 is assembled in the fourth hole 221 and the second hole to fix the second fixing part 22 to the front sidewall 111.

[0043] The first fixing part 21 of the front suspension 2 is fixed to the upper side wall 112 of the crossbeam 11, establishing an X-direction force transmission path. The second fixing part 22 of the front suspension 2 is fixed to the front side wall 111 of the crossbeam 11, establishing a Z-direction force transmission path. The front suspension 2 and the crossbeam 11 establish an X / Z-direction force transmission path, enhancing the bending stiffness of the crossbeam 11, reducing plastic deformation, and significantly improving bending resistance. During the ECE R29 pendulum impact test of the vehicle, finite element analysis verified that the pendulum impact energy dispersion efficiency can be improved by 42%, fully meeting the ECE R29 regulations regarding the cab survival space requirements. The front suspension 2 and the crossbeam 11 are fixed by the first fixing part 3 and the second fixing part 4, facilitating the assembly and disassembly of the front suspension 2. This allows the front suspension 2 to switch between two modes: fixed to the crossbeam 11 and fixed to the longitudinal beam 12. The vehicle cab can share the same frame 1 in both tiltable and non-tiltable modes, shortening the development cycle and reducing development costs. Through testing, the development cycle was shortened by 50% while the overall cost was reduced by 30%, achieving the optimal balance between safety performance and economic benefits.

[0044] One or more of the first fasteners 3 may be provided. Figures 1 to 2 In this configuration, three of the first fixing members 3 are provided.

[0045] In one embodiment, the first fastener 3 is an M14 grade 10.9 high-strength bolt, which can prevent the first fastener 3 from breaking and failing.

[0046] One or more of the second fasteners 4 can be provided. Figures 1 to 2 In this configuration, two of the first fixing members 3 are provided.

[0047] In one embodiment, the second fixing member 4 is an M8 specification 10.9 grade high-strength bolt.

[0048] In one embodiment, when the front mount 2 is fixed to the longitudinal beam 12, the first fixing portion 21 is located outside the top wall 121 of the longitudinal beam 12 and is fixed to the top wall 121, and the second fixing portion 22 is located outside the front side wall 111 of the cross beam 11 and is fixed to the cross beam 11.

[0049] In another embodiment, the longitudinal beam 12 includes a fixed side wall (not shown), the orientation of the fixed side wall is the same as that of the front side wall 111, when the front mount 2 is fixed to the longitudinal beam 12, the first fixing portion 21 is located outside the top wall 121 of the longitudinal beam 12 and is fixed to the top wall 121, and the second fixing portion 22 is located outside the fixed side wall of the longitudinal beam 12 and is fixed to the fixed side wall.

[0050] In one embodiment, the vehicle frame assembly includes a first nut (not shown), the first fixing member 3 passes through the third hole 21 and the first hole and is fixed to the first nut. The application does not limit the order in which the first fixing member 3 passes through the third hole 21 and the first hole.

[0051] The first nut can be fixed to the upper side wall 112 of the cross beam 11 or the first fixing portion 21, or can be an independent nut.

[0052] In one embodiment, the vehicle frame assembly includes a second nut (not shown), the second fixing member 4 passes through the fourth hole 221 and the second hole and is fixed to the second nut. The application does not limit the order in which the second fixing member 4 passes through the fourth hole 221 and the second hole.

[0053] The second nut can be fixed to the front side wall 111 of the cross beam 11 or the second fixing portion 22, or can be an independent nut.

[0054] See Figures 3 to 4 , in one embodiment, the front mount 2 includes a mounting seat 23, the mounting seat 23 includes the first fixing portion 21 and the second fixing portion 22. The second fixing portion 22 is integrally provided with the first fixing portion 21, saving components, having a lighter weight and better strength.

[0055] In one embodiment, the mounting seat 23 is formed by stamping with low alloy high-strength steel, which can improve the service life of the front mount 2. The mounting seat 23 is in an L shape, that is, the first fixing portion 21 and the second fixing portion 22 are perpendicular to each other and form an L shape therebetween.

[0056] In one embodiment, the thickness of the first fixing part 21 and the second fixing part 22 is 5±0.2mm, which can improve the lifespan of the front suspension 2.

[0057] In one embodiment, both the first fixing part 21 and the second fixing part 22 are sheet-shaped, and the area of ​​the first fixing part 21 is larger than the area of ​​the second fixing part 22, taking into account the requirements of weight, space and connection strength.

[0058] In one embodiment, the first fixing part 21 is provided with a first weight-reducing hole 212 to reduce weight.

[0059] In one embodiment, the first fixing part 21 is L-shaped. In another embodiment, three third holes 211 are provided, and the line connecting the centers of the three third holes 211 forms a right-angled triangle. Two of the third holes 211 are located on the long side of the first fixing part 21, and the other third hole 211 is located on the short side.

[0060] In one embodiment, the first weight-reducing hole 212 is disposed on the upper side and between the two third holes 211 located on the long side. The second fixing part 22 extends from the short side of the first fixing part 21. In one embodiment, the line connecting the centers of the two fourth holes 221 is parallel to the horizontal direction. In one embodiment, the two fourth holes 221 are located near the bottom end of the second fixing part 22 away from the first fixing part 21.

[0061] The front suspension 2 includes a support 24 fixed to the first fixing part 21 and a bracket 25 fixed to the support 24. The bracket 25 is used to connect to the cab. The bracket 25 is provided with a mounting hole 251, the axial direction of which is the same as the length direction of the crossbeam 11. Along the top-to-bottom direction, the bracket 25, the support 24, the first fixing part 21 and the crossbeam 11 are arranged in sequence.

[0062] When the cab is tiltable, the rotating rod is assembled in the mounting hole 251; when the cab is not tiltable, bolts are assembled in the mounting hole 251 to connect the bracket 25 to the cab.

[0063] In one embodiment, the support 24 is welded to the first fixing part 21, which saves the number of parts, saves space, and reduces assembly steps.

[0064] In one embodiment, the bracket 25 is welded to the support 24, which saves the number of parts, saves space, and reduces assembly steps.

[0065] In one embodiment, the support 24 is fixedly welded to the first fixing portion 21, and the bracket 25 is fixedly welded to the support 24, saving the number of components, saving space, and reducing the assembly process.

[0066] In one embodiment, the bracket 25 is fixedly welded to the support 24 by CO2 gas shielded welding with a fillet weld height of 4 mm.

[0067] In one embodiment, the front mount 2 includes a reinforcing plate 26. Along the length direction of the cross beam 11, the reinforcing plate 26 is located on one side of the support 24 to increase the strength of the support 24 and prevent fracture between the support 24 and the first fixing portion 21.

[0068] The reinforcing plate 26 is provided with a first side edge 260 extending along the length direction of the cross beam 11 and a second side edge 261 adjacent to the first side edge 260. The first side edge 260 is fixed to the first fixing portion 21, and the second side edge 261 is fixed to the support 24, and the reinforcing plate 26 has a better strengthening effect. Verified by simulation and tests, the stiffness can be increased by 65% and the fatigue life can be increased by more than 30%.

[0069] In one embodiment, the first side edge 260 is fixedly welded to the first fixing portion 21.

[0070] In one embodiment, the second side edge 261 is fixedly welded to the support 24.

[0071] One or more reinforcing plates 26 can be provided. When multiple reinforcing plates 26 are provided, the multiple reinforcing plates 26 are arranged at intervals along the length direction of the longitudinal beam 12 to increase the strength of the support 24. The shapes of the multiple reinforcing plates 26 can be the same or different. The sizes of the multiple reinforcing plates 26 can be the same or different.

[0072] In one embodiment, the reinforcing plate 26 is formed by laser cutting of low alloy high strength steel. The thickness of the reinforcing plate 26 is 5 ± 0.2 mm.

[0073] In one embodiment, the reinforcing plate 26 is trapezoidal.

[0074] The height of the fillet weld between the reinforcing plate 26 and the first fixing portion 21 is 4 mm.

[0075] See Figures 5 to 8The support 24 includes a main body 241 fixed to the first fixing part 21 and a reinforcing part 242 extending from the main body 241. The bracket 25 is fixed to the main body 241. The reinforcing part 242 and the main body 241 are fixed to the first fixing part 21, including but not limited to welding. The reinforcing part 242 and the reinforcing plate 26 are located on opposite sides of the main body 241. The provision of the reinforcing part 242 further increases the strength of the support 24, and eliminates the need for a separate reinforcing plate 26, thus saving assembly steps.

[0076] In one embodiment, the main body 241 and the first fixing part 21 form a double-sided fillet weld with a weld leg height of 4 mm to increase strength.

[0077] In one embodiment, the main body 241 is U-shaped and includes a first plate-shaped portion 2411 and a second plate-shaped portion 2412 connected to the first plate-shaped portion 2411. The main body 241 is lightweight and has better stability with the first fixing portion 21, thereby improving the strength of the front suspension 2. The main body 241 includes a connecting portion 2413 connecting the first plate-shaped portion 2411 and the second plate-shaped portion 2412. The connecting portion 2413 is arc-shaped.

[0078] The reinforcing part 242 is connected to the first plate-shaped part 2411, and the reinforcing plate 26 is fixed to the second plate-shaped part 2412. The main body part 241 is lightweight.

[0079] In one embodiment, the reinforcing plate 26 is welded and fixed to the second plate-shaped portion 2412.

[0080] In one embodiment, the reinforcing plate 26 is provided with a second weight-reducing hole 262 to reduce the weight of the reinforcing plate 26.

[0081] In one embodiment, the first plate-shaped portion 2411 is provided with a third weight-reducing hole 2414 to reduce the weight of the support 24.

[0082] In one embodiment, the second plate-shaped portion 2412 is provided with a fourth weight-reducing hole 2415 to reduce the weight of the support 24.

[0083] In one embodiment, the third weight-reducing hole 2414 is provided as one, and the fourth weight-reducing hole 2415 is provided as two.

[0084] In one embodiment, the reinforcing part 242 is provided with a fifth weight-reducing hole 2421 to reduce the weight of the support 24.

[0085] In one embodiment, the support 24 is formed by bending a low-alloy high-strength steel through three passes. The reinforcing portion 242 is perpendicular to the first plate-like portion 2411. The thicknesses of the first plate-like portion 2411, the second plate-like portion 2412, and the reinforcing portion 242 are 5 ± 0.2 mm.

[0086] Through testing, the settings of the third weight-reducing hole 2414 and the fourth weight-reducing hole 2415 result in a 18% reduction in mass while the stiffness retention rate ≥ 95%.

[0087] See Figure 9 , in another embodiment, the second fixing portion 22 is separately provided from the first fixing portion 21, and the second fixing portion 22 is fixed to the support 24, facilitating processing and forming. The connecting portion 2413 of the support 24 is in the shape of a flat plate to facilitate fixing to the second fixing portion 22.

[0088] In one embodiment, the vehicle frame assembly includes a third fixing member 5. The second fixing portion 22 is provided with a fifth hole (not shown). The support 24 is provided with a sixth hole (not shown). The third fixing member 5 is assembled in the fifth hole and the sixth hole to fix the second fixing portion 22 and the support 24, facilitating the disassembly of the second fixing portion 22 and the support 24. <0,

[0089] In one embodiment, the vehicle frame assembly includes a third nut (not shown). The third fixing member 5 passes through the fifth hole and the sixth hole and is then fixed to the third nut.

[0090] This application does not limit the order in which the third fixing member 5 passes through the fifth hole and the sixth hole.

[0091] The third nut can be fixed to the support 24 or the second fixing portion 22, or can be an independent nut.

[0092] In one embodiment, the second fixing portion 22 is in the shape of a long strip and includes a first fixing segment 223 and a second fixing segment 224. The first fixing segment 223 is located outside the front side wall 111 of the cross beam 11 and is fixed to the front side wall 111, and the second fixing segment 224 is located outside the support 24 and is fixed to the support 24.

[0093] In one embodiment, the opposite ends of the second fixing portion 22 respectively have flanges 225, and the flanges 225 extend along the length direction of the second fixing portion 22 to increase the strength of the second fixing portion 22.

[0094] In one embodiment, the reinforcing plate 26 includes a base 263 and a positioning portion 264 formed by bending the base 263, the base 263 being fixed to the support 24. The positioning portion 264 has a seventh hole (not shown). The first fixing member 3 is assembled in the seventh hole of the reinforcing plate 26, the third hole 211 of the first fixing portion 21, and the first hole of the crossbeam 11 to fix the reinforcing plate 26, the first fixing portion 21, and the crossbeam 11.

[0095] In one embodiment, the base 263 is welded to the support 24.

[0096] The reinforcing plate 26 can be fixed to the first fixing part 21 by the first fixing member 3, and can also be fixed to the first fixing part 21 by means of welding, including but not limited to welding.

[0097] It should be noted that the technical solutions or features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings; all modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A vehicle frame assembly, characterized in that, include: A frame includes a crossbeam and a pair of longitudinal beams, the crossbeam connecting the pair of longitudinal beams, the crossbeam including a vertical front sidewall and an upper sidewall, both the front sidewall and the upper sidewall extending along the length of the crossbeam, the upper sidewall having a first hole, and the front sidewall having a second hole; The front suspension includes a first fixing part and a second fixing part connected to the first fixing part. The first fixing part is provided with a third hole, and the second fixing part is provided with a fourth hole. When the front suspension is fixed to the crossbeam, the first fixing part is located on the outside of the upper sidewall, and the second fixing part is located on the outside of the front sidewall. The first fastener is assembled in the third hole and the first hole to fix the first fastener to the upper sidewall; The second fastener is assembled in the fourth hole and the second hole to fix the second fastener to the front sidewall.

2. The frame assembly according to claim 1, characterized in that, The front suspension includes a support fixed to the first fixing part and a bracket fixed to the support. The bracket is provided with a mounting hole. The axial direction of the mounting hole is in the same direction as the length direction of the crossbeam. Along the top-to-bottom direction, the bracket, the support, the first fixing part and the crossbeam are arranged in sequence.

3. The frame assembly according to claim 2, characterized in that, The front suspension includes a reinforcing plate. Along the length of the crossbeam, the reinforcing plate is located on one side of the support. The reinforcing plate has a first side extending along the length of the crossbeam and a second side adjacent to the first side. The first side is fixed to the first fixing part, and the second side is fixed to the support.

4. The frame assembly according to claim 3, characterized in that, The support includes a main body fixed to the first fixing part and a reinforcing part extending from the main body. The bracket is fixed to the main body, and the reinforcing part and the main body are fixed to the first fixing part. The reinforcing part and the reinforcing plate are located on opposite sides of the main body.

5. The frame assembly according to claim 4, characterized in that, The main body is U-shaped and includes a first plate-shaped part and a second plate-shaped part connected to the first plate-shaped part. The reinforcing part is connected to the first plate-shaped part, and the reinforcing plate is fixed to the second plate-shaped part.

6. The frame assembly according to claim 5, characterized in that, The first fixing part is provided with a first weight-reducing hole; and / or, The reinforcing plate is provided with a second weight-reducing hole; and / or, The first plate-shaped portion is provided with a third weight-reducing hole; and / or, The second plate-shaped portion is provided with a fourth weight-reducing hole; and / or The reinforcing section is provided with a fifth weight-reducing hole.

7. The frame assembly according to any one of claims 1 to 6, characterized in that, The second fixing part is integrally formed with the first fixing part.

8. The frame assembly according to any one of claims 2 to 6, characterized in that, The second fixing part is integrally disposed with the first fixing part, and the second fixing part is fixed to the support.

9. The frame assembly according to claim 8, characterized in that, The frame assembly includes a third fastener, the second fastener has a fifth hole, the support has a sixth hole, and the third fastener is assembled in the fifth hole and the sixth hole to fix the second fastener and the support.

10. The frame assembly according to claim 8, characterized in that, The second fixing part is elongated and includes a first fixing section and a second fixing section. The first fixing section is located on the outside of the front sidewall and is fixed to the front sidewall. The second fixing section is located on the outside of the support and is fixed to the support.

11. A vehicle, characterized in that, It includes a cab and a frame assembly as described in any one of claims 1 to 10, wherein the cab is connected to the front suspension.

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