Vehicle frame

Abstract

The utility model provides a vehicle frame. The vehicle frame comprises a vehicle frame body, a plurality of air suspensions and a connecting assembly. The frame body comprises two longitudinal beams distributed at intervals in the transverse direction and a plurality of first cross beams connected between the two longitudinal beams at intervals in the longitudinal direction. The multiple air suspensions are arranged at the bottom of the frame body at intervals in the longitudinal direction. Each air suspension comprises a support assembly and an air bag assembly which are distributed at intervals in the longitudinal direction. Each support assembly is correspondingly located below the corresponding first cross beam. Each support assembly comprises two supports arranged in one-to-one correspondence with the two longitudinal beams. The connecting assembly comprises a plurality of connecting beams, and each connecting beam is correspondingly connected between the two supports of one support assembly so that the two supports can be connected into a whole in the transverse direction. The connecting beams are located below the first cross beams and connected with the correspondingly arranged first cross beams, so that the connecting beams and the first cross beams are connected into a whole in the vertical direction, and therefore the structural strength, the supporting strength, the torque resistance and the like of the two supports in the transverse direction and the connecting beams in the vertical direction can be improved.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and in particular to a vehicle frame. Background Technology

[0002] The suspension system is a collective term for all force-transmitting connections between the vehicle's frame and wheels. Its function is to transmit the forces and torques acting between the wheels and the frame, buffer the impact forces transmitted from uneven road surfaces to the frame or body, and dampen the resulting vibrations to ensure a smooth ride. Air suspension systems are now widely used in passenger cars, large trucks, semi-trailers, and especially in tank trucks carrying hazardous chemicals, where its superiority is particularly evident.

[0003] Currently, air suspension generally consists of two pairs of brackets and two pairs of airbags. When installing air suspension, the two brackets and two airbags are usually directly connected to the vehicle frame. The brackets and airbags are distributed at intervals along the length of the vehicle frame, and each bracket is connected to one airbag along the length of the vehicle frame to achieve linkage.

[0004] However, since the bracket and airbag are at least partially suspended below the frame, and the connection between the bracket and airbag is only in the length direction of the frame, the above design results in poor structural strength and torsional resistance of the air suspension in the width direction of the frame. During long-term use, the external force on the bracket is mainly transmitted to the frame in the vertical direction, which can easily lead to stress concentration in a single direction. This can cause the bracket and frame to undergo torsional deformation under dynamic loads, thus accelerating the damage to the air suspension and frame. Utility Model Content

[0005] The purpose of this utility model is to provide a vehicle frame that can improve the overall structural strength and stability of the vehicle frame by strengthening the structural strength and torsional resistance of its air suspension, thereby extending the service life of the vehicle frame.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] According to one aspect of this application, a vehicle frame is provided, comprising:

[0008] The frame body extends longitudinally; the frame body includes two longitudinal beams and a plurality of first crossbeams, the two longitudinal beams are distributed laterally at intervals, and the plurality of first crossbeams are connected longitudinally at intervals between the two longitudinal beams;

[0009] Multiple air suspensions are longitudinally spaced at the bottom of the vehicle frame body; each air suspension includes a support assembly and an airbag assembly distributed longitudinally; each support assembly is located below a first crossbeam; each support assembly includes two supports distributed laterally, and the two supports are arranged in a one-to-one correspondence with the two longitudinal beams.

[0010] The connecting assembly includes multiple connecting beams, each connecting beam being connected between two supports of a support assembly; the connecting beam is located below the first crossbeam and is connected to the correspondingly arranged first crossbeam.

[0011] In some embodiments, the connecting beam and the correspondingly arranged first crossbeam are spaced apart in the longitudinal direction;

[0012] The connecting assembly further includes a plurality of connecting plates, and each of the connecting beams is connected to the correspondingly arranged first crossbeam through at least one of the connecting plates;

[0013] The connecting plate includes a connecting part located between the connecting beam and the first crossbeam. The upper end of the connecting part is detachably connected to one longitudinal side of the first crossbeam, and the lower end of the connecting part is fixedly connected to one longitudinal side of the connecting beam.

[0014] In some embodiments, the connecting plate further includes a first reinforcing portion, which is connected to the bottom of the connecting portion and is located below the connecting beam; the first reinforcing portion is inclined from top to bottom in a direction away from the first crossbeam.

[0015] The connecting plate further includes a second reinforcing part, which is connected to the bottom of the first reinforcing part; the second reinforcing part is inclined from top to bottom in a direction away from the first crossbeam; the included angle between the second reinforcing part and the first reinforcing part is an obtuse angle.

[0016] In some embodiments, the frame includes a plurality of first mounting components, each of the bracket components being detachably connected to the frame body via a first mounting component;

[0017] The first mounting component includes two first mounting seats, which are detachably connected to the two longitudinal beams in a one-to-one correspondence.

[0018] Each of the first mounting seats is provided with a plurality of first mounting holes spaced apart, and each of the longitudinal beams is provided with a plurality of first fixing holes corresponding one-to-one with the plurality of first mounting holes on each of the first mounting seats. Each of the first mounting holes and the corresponding first fixing holes is used for a first fastener to pass through, so as to realize the detachable connection between the first mounting seat and the longitudinal beam.

[0019] Each of the brackets in each bracket assembly is fixed to the bottom of a first mounting base.

[0020] In some embodiments, each of the first mounting bases includes a first mounting plate and a second mounting plate, the second mounting plate being fixed to the bottom of the first mounting plate, and both the first mounting plate and the second mounting plate being provided with a plurality of first mounting holes spaced apart.

[0021] The first mounting plate is detachably connected to the outer side of the longitudinal beam via the first fastener, and the second mounting plate is detachably connected to the bottom of the longitudinal beam via the first fastener. The bottom of the second mounting plate is fixedly connected to the bracket.

[0022] In some embodiments, each of the first mounting bases further includes a plurality of first reinforcing plates, the plurality of first reinforcing plates being fixedly spaced between the first mounting plate and the second mounting plate; and / or,

[0023] Each of the first mounting bases further includes a plurality of second reinforcing plates, which are fixed at intervals between the second mounting plate and the bracket.

[0024] In some embodiments, the frame includes a plurality of second mounting components, each of the airbag components being detachably connected to the frame body via a second mounting component;

[0025] Each of the second mounting components includes two second mounting seats, and the two second mounting seats are fixedly connected to the two longitudinal beams in a one-to-one correspondence;

[0026] Each of the airbag assemblies includes two airbags, and the two airbags are detachably connected to the two second mounting seats in a one-to-one correspondence;

[0027] Each airbag is provided with a plurality of second fasteners; each second mounting base is provided with a plurality of second mounting holes, and the plurality of second mounting holes correspond one-to-one with the plurality of second fasteners on each airbag. Each second mounting hole is used for a second fastener to pass through, so as to realize the connection and fixation between the second mounting base and the airbag.

[0028] In some embodiments, each of the second mounting bases includes a fixing plate, the fixing plate being fixed to the bottom of the longitudinal beam, and the fixing plate being provided with a plurality of second mounting holes;

[0029] The second mounting base also includes a plurality of reinforcing plates, which are fixed at intervals between the transverse side of the longitudinal beam and the fixing plate.

[0030] In some embodiments, the vehicle frame body further includes a plurality of second crossbeams that are longitudinally spaced between the two longitudinal beams, and the plurality of second crossbeams are arranged in a one-to-one correspondence with the plurality of airbag assemblies; the second crossbeams are distributed adjacent to the first crossbeams.

[0031] In some embodiments, each airbag assembly includes two airbags distributed laterally at intervals, and the two airbags are arranged in a one-to-one correspondence with the two longitudinal beams;

[0032] Each of the air suspensions further includes two cantilever arms, each of which is used to connect the bracket and the airbag arranged on the same longitudinal beam; each of the cantilever arms is hinged to the bracket and fixedly connected to the airbag.

[0033] As can be seen from the above technical solution, this utility model has at least the following advantages and positive effects:

[0034] In this application, the two supports of the air suspension are connected by a connecting beam to form a single structure in the lateral direction, thereby improving the lateral structural strength of the supports. This design can simultaneously transmit the external force on the supports vertically to the longitudinal beam and laterally to the connecting beam, thus dispersing the external force on the supports in multiple directions, avoiding stress concentration in one direction, and effectively suppressing torsional deformation of the supports under dynamic loads. This ensures the support strength of the supports, improves the structural strength and stability of the frame, and extends the service life of the frame. Furthermore, this application arranges a first crossbeam above each support assembly and connects the connecting beam to the first crossbeam one by one. That is, this application connects the connecting beam and the first crossbeam into a single structure in the vertical direction, enabling force transmission between the connecting beam and the first crossbeam to avoid stress concentration. This improves the vertical structural strength and torsional resistance of the connecting beam, thereby improving the structural strength of the air suspension and even the entire frame.

[0035] Furthermore, since this application provides a first crossbeam above each bracket assembly, that is, a first crossbeam is connected between each bracket and the longitudinal beam of each bracket assembly, this can ensure a high connection strength between the two longitudinal beams while improving the rigidity of the connection between the longitudinal beam and the bracket, so as to avoid cracks caused by excessive force during use, thereby extending the service life of the frame. Attached Figure Description

[0036] Figure 1 This is a three-dimensional structural diagram of the vehicle frame in one direction in this embodiment.

[0037] Figure 2 This is a three-dimensional structural diagram of the vehicle frame in another direction in this embodiment.

[0038] Figure 3 This is a top view of the vehicle frame in this embodiment.

[0039] Figure 4 This is a side view of the vehicle frame in this embodiment.

[0040] Figure 5 This is a schematic diagram of the structure of the first mounting base in this embodiment.

[0041] Figure 6 This is a schematic diagram of the structure of the second mounting base in this embodiment.

[0042] Figure 7 yes Figure 1 Enlarged structural diagram at point A in the middle.

[0043] Figure 8 yes Figure 2 Enlarged structural diagram at point B.

[0044] Figure 9 This is a schematic diagram of the connecting plate in this embodiment.

[0045] The annotations in the attached figures are explained as follows:

[0046] 100. Frame;

[0047] 1. Chassis body; 11. Longitudinal beam; 111. Upper fender; 112. Lower fender; 113. Web plate; 12. First crossbeam; 13. Second crossbeam; 14. Third crossbeam;

[0048] 2. Air suspension; 21. Bracket; 22. Airbag; 23. Cantilever; 24. Hinge;

[0049] 31. Connecting beam; 32. Connecting plate; 321. Connecting part; 322. First reinforcing part; 323. Second reinforcing part; 324. Connecting hole; 325. Clearance groove;

[0050] 4. First mounting base; 41. First mounting plate; 42. Second mounting plate; 43. First mounting hole; 44. First reinforcing plate; 45. Second reinforcing plate; 46. Third reinforcing plate; 47. Abutment plate; 471. Through hole; 48. Slot;

[0051] 5. Second mounting base; 51. Fixing plate; 52. First reinforcing plate; 53. Second reinforcing plate; 54. Second mounting hole. Detailed Implementation

[0052] Typical embodiments embodying the features and advantages of this utility model will be described in detail in the following description. It should be understood that this utility model can have various variations in different embodiments, all of which do not depart from the scope of this utility model, and the descriptions and illustrations therein are for illustrative purposes only and not intended to limit this utility model.

[0053] In the description of this application, it should be understood that, in the embodiments shown in the accompanying drawings, the indications of direction or positional relationships (such as up, down, left, right, front, and back) are merely for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. These descriptions are appropriate when these elements are in the positions shown in the accompanying drawings. If the description of the positions of these elements changes, these directional indications also change accordingly.

[0054] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0055] This application provides a vehicle frame that can be applied to large trucks, semi-trailers, and hazardous chemical tank trucks. Specifically, this application is illustrated using a hazardous chemical liquid tank truck as an example. The following detailed description of specific embodiments of the vehicle frame, in conjunction with the accompanying drawings, provides further insight.

[0056] Figure 1 This is a three-dimensional structural diagram of the vehicle frame in one direction in this embodiment. Figure 2 This is a three-dimensional structural diagram of the vehicle frame in another direction in this embodiment. Figure 3 This is a top view of the vehicle frame in this embodiment. Figure 4 This is a side view of the vehicle frame in this embodiment.

[0057] refer to Figures 1-4 The frame 100 includes a frame body 1, multiple air suspensions 2, and connecting assemblies. The frame body 1 extends longitudinally. The frame body 1 includes two longitudinal beams 11 and multiple first crossbeams 12. The two longitudinal beams 11 are spaced laterally, and the multiple first crossbeams 12 are spaced longitudinally between the two longitudinal beams 11. Multiple air suspensions 2 are spaced longitudinally at the bottom of the frame body 1. Each air suspension 2 includes a bracket assembly and an airbag assembly spaced longitudinally. Each bracket assembly is located below a corresponding first crossbeam 12. Each bracket assembly includes two brackets 21 spaced laterally, with each bracket 21 corresponding to one of the two longitudinal beams 11. The connecting assemblies include multiple connecting beams 31, each connecting beam 31 corresponding to one of the two brackets 21 of a bracket assembly. The connecting beams 31 are located below the first crossbeams 12 and connected to the corresponding first crossbeams 12.

[0058] In this application, the two supports 21 of the air suspension 2 are connected by the connecting beam 31 to form a whole structure in the lateral direction, thereby improving the structural strength of the two supports 21 in the lateral direction. This design can transmit the external force on the support 21 to the longitudinal beam 11 in the vertical direction and to the connecting beam 31 in the lateral direction at the same time. It can disperse the external force on the support 21 in multiple directions, avoid stress concentration in one direction, and effectively suppress the torsional deformation of the support 21 under dynamic load. This ensures the support strength of the support 21, improves the structural strength and stability of the frame 100, extends the service life of the frame 100, and can stably support the liquid tank of the hazardous chemical tanker truck. Furthermore, this application provides a first crossbeam 12 above each bracket assembly and connects the connecting beam 31 to the first crossbeam 12 one by one. That is, this application connects the connecting beam 31 and the first crossbeam 12 into a whole structure in the vertical direction, so that the connecting beam 31 and the first crossbeam 12 can transmit force to avoid stress concentration. This can improve the structural strength and torsional resistance of the connecting beam 31 in the vertical direction, thereby improving the structural strength of the air suspension 2 and even the entire frame 100.

[0059] Furthermore, since this application provides a first crossbeam 12 above each bracket assembly, that is, a first crossbeam 12 is connected between each bracket 21 of each bracket assembly and the longitudinal beam 11. This can ensure a high connection strength between the two longitudinal beams 11 while improving the rigidity of the connection between the longitudinal beam 11 and the bracket 21, so as to avoid cracks caused by excessive force during use, thereby extending the service life of the frame 100.

[0060] For ease of description, it is hereby defined that the length direction of the frame body 1 is the longitudinal direction, and the width direction of the frame body 1 is the transverse direction.

[0061] refer to Figures 1-3 The frame body 1 includes two longitudinal beams 11 and multiple first crossbeams 12.

[0062] Among them, the two longitudinal beams 11 are distributed at intervals along the transverse direction, and each longitudinal beam 11 extends along the longitudinal direction.

[0063] In this embodiment, each longitudinal beam 11 includes an upper flange 111, a lower flange 112, and a web 113. The upper flange 111 and the lower flange 112 are distributed vertically at intervals, and the web 113 connects the upper flange 111 and the lower flange 112. The upper flange 111, the lower flange 112, and the web 113 all extend longitudinally. Specifically, the upper flange 111 and the lower flange 112 are distributed vertically in parallel intervals, and the upper flange 111 and the lower flange 112 extend laterally. The web 113 extends vertically, and the top of the web 113 is fixedly connected to the middle of the upper flange 111 laterally. The bottom of the web 113 is flush with and fixedly connected to the outer end of the lower flange 112 laterally, so that the web 113, the upper flange 111, and the lower flange 112 enclose a receiving groove on the inner side laterally.

[0064] That is, the cross-section of the longitudinal beam 11 in this embodiment is roughly T-shaped, which has a smaller weight than the I-beam, thus facilitating the lightweighting of the frame 100; at the same time, it has better rigidity and structural strength than the U-shaped channel steel.

[0065] In this embodiment, multiple first crossbeams 12 are longitudinally spaced between two longitudinal beams 11, and each first crossbeam 12 extends laterally. Specifically, the two ends of each first crossbeam 12 are correspondingly fitted into the receiving grooves of the two longitudinal beams 11, and the top of the first crossbeam 12 is fixedly connected to the bottom of the upper wing plate 111, the bottom of the first crossbeam 12 is fixedly connected to the top of the lower wing plate 112, and the lateral side of the first crossbeam 12 is fixedly connected to the web plate 113. This improves the connection strength between the first crossbeams 12 and the longitudinal beams 11, thereby improving the structural strength and stability of the frame body 1. The first crossbeams 12 are welded to the longitudinal beams 11.

[0066] In this embodiment, the first crossbeam 12 has an opening on one longitudinal side, and the openings of multiple first crossbeams 12 are in the same direction. Specifically, the first crossbeam 12 is a U-shaped beam.

[0067] Multiple weight-reducing holes are provided at transverse intervals along the first crossbeam 12, which can reduce the weight of the first crossbeam 12 and facilitate the lightweighting of the frame 100.

[0068] In this embodiment, the frame body 1 also includes a plurality of second crossbeams 13, which are longitudinally spaced between two longitudinal beams 11, and the second crossbeams 13 are distributed adjacent to the first crossbeams 12. Specifically, the connection method between the second crossbeams 13 and the longitudinal beams 11 can refer to the connection method between the first crossbeams 12 and the longitudinal beams 11 described above, and will not be repeated here.

[0069] The second crossbeam 13 has an opening on one longitudinal side, and multiple second crossbeams 13 have the same opening direction. Furthermore, the opening direction of the second crossbeam 13 is opposite to the opening direction of the first crossbeam 12. Specifically, the second crossbeam 13 is a U-shaped beam.

[0070] Since the second crossbeam 13 is distributed adjacent to the first crossbeam 12, and the opening directions of the second crossbeam 13 and the first crossbeam 12 are alternately arranged in the longitudinal direction, a mechanically complementary structure can be formed. This design can more evenly distribute the bending stress and torsional stress on the frame 100 during driving, reduce the risk of local stress concentration, and significantly improve the overall bending and torsional resistance of the frame 100.

[0071] The frame body 1 may also include a plurality of third crossbeams 14, which are longitudinally spaced between two longitudinal beams 11. Specifically, the third crossbeams 14 are spaced on one side of all the second crossbeams 13 and all the first crossbeams 12 along the longitudinal direction. The cooperation of the first crossbeams 12, the second crossbeams 13 and the third crossbeams 14 can increase the connection strength between the two longitudinal beams 11, so that the frame body 1 has better structural strength and higher rigidity.

[0072] Specifically, the connection method between the third crossbeam 14 and the longitudinal beam 11 can be referred to the connection method between the first crossbeam 12 and the longitudinal beam 11 mentioned above, and will not be repeated here.

[0073] Specifically, the third crossbeam 14 is a U-shaped beam.

[0074] refer to Figures 1-4 Multiple air suspensions 2 are longitudinally spaced at the bottom of the vehicle frame body 1. Each air suspension 2 includes a bracket assembly and an airbag assembly distributed longitudinally at intervals.

[0075] Each support assembly is located below a first crossbeam 12. Each support assembly includes two supports 21 spaced laterally, with each support 21 corresponding to one of the two longitudinal beams 11. That is, a first crossbeam 12 connects each support 21 of each support assembly to the longitudinal beam 11. This ensures a high connection strength between the two longitudinal beams 11 while improving the rigidity of the connection between the longitudinal beam 11 and the support 21, thus preventing cracks caused by excessive stress during use and extending the service life of the frame 100.

[0076] In this embodiment, each bracket assembly is detachably connected to the frame body 1. The frame 100 also includes multiple first mounting components, and each bracket assembly is detachably connected to the frame body 1 through a first mounting component. This facilitates quick assembly and disassembly of the bracket assembly and the frame body 1, enabling operations such as bracket assembly replacement.

[0077] Each first mounting component includes two first mounting seats 4, which are detachably connected to two longitudinal beams 11 in a one-to-one correspondence. Each bracket 21 of each bracket component is fixed to the bottom of a first mounting seat 4. In other embodiments, the two first mounting seats 4 are fixedly connected to the two longitudinal beams 11 in a one-to-one correspondence, and each bracket 21 of each bracket component is detachably disposed at the bottom of a first mounting seat 4.

[0078] Figure 5 This is a schematic diagram of the structure of the first mounting base 4 in this embodiment.

[0079] refer to Figures 1-5 In this embodiment, each first mounting base 4 is provided with a plurality of first mounting holes 43 spaced apart, and each longitudinal beam 11 is provided with a plurality of first fixing holes corresponding one-to-one with the plurality of first mounting holes 43 on each first mounting base 4. Each mounting hole and its corresponding first fixing hole are used for a first fastener to pass through, so as to realize the detachable connection between the first mounting base 4 and the longitudinal beam 11, thereby realizing the detachable connection between the bracket 21 and the longitudinal beam 11. The bracket 21 is welded and fixed to the first mounting base 4.

[0080] Specifically, each first mounting base 4 includes a first mounting plate 41 and a second mounting plate 42. The second mounting plate 42 is fixed to the bottom of the first mounting plate 41. Both the first mounting plate 41 and the second mounting plate 42 are provided with a plurality of first mounting holes 43 spaced apart. The first mounting plate 41 is attached to the transverse outer side of the longitudinal beam 11 and is detachably connected to the longitudinal beam 11 via first fasteners. The second mounting plate 42 is attached to the bottom of the longitudinal beam 11 and is detachably connected to the longitudinal beam 11 via first fasteners. The bottom of the second mounting plate 42 is fixedly connected to the bracket 21.

[0081] That is, the web plate 113 and the lower flange plate 112 of the longitudinal beam 11 are both provided with first fixing holes. The first mounting holes 43 on the first mounting plate 41 and the first fixing holes on the web plate 113 can be connected one-to-one to allow the first fasteners to pass through. The first mounting holes 43 on the second mounting plate 42 and the first fixing holes on the lower flange plate 112 can be connected one-to-one to allow the first fasteners to pass through.

[0082] Optionally, the second mounting plate 42 can also be detachably connected to the first crossbeam 12 via a first fastener.

[0083] For example, the first fastener may be a bolt, nut, rivet, etc.

[0084] In this embodiment, each first mounting base 4 also includes a first reinforcing plate 44. Multiple first reinforcing plates 44 are fixed at intervals between the first mounting plate 41 and the second mounting plate 42 to improve the connection strength between the first mounting plate 41 and the second mounting plate 42, thereby improving the structural strength of the first mounting base 4 and improving the support stability of the bracket 21.

[0085] Specifically, the first reinforcing plate 44 is perpendicular to the first mounting plate 41, and the first reinforcing plate 44 is perpendicular to the second mounting plate 42. For example, the first reinforcing plate 44 may be in the shape of a right triangle, a right trapezoid, etc.

[0086] Optionally, each first mounting base 4 may also include a plurality of second reinforcing plates 45, which are fixed at intervals between the second mounting plate 42 and the bracket 21 to improve the connection strength between the second mounting plate 42 and the bracket 21, thereby improving the stability of the bracket 21.

[0087] Specifically, the second reinforcing plate 45 is perpendicular to the second mounting plate 42, and the second reinforcing plate 45 is perpendicular to the bracket 21. For example, the second reinforcing plate 45 may be in the shape of a right triangle, a right trapezoid, etc.

[0088] In this embodiment, each first mounting base 4 may further include an abutment plate 47, which is disposed on the top of the second mounting plate 42 and located at the transverse inner end of the second mounting plate 42. The abutment plate 47, the second mounting plate 42, and the first mounting plate 41 together form a slot 48, which is used to engage with the lower flange 112 of the longitudinal beam 11. This allows the outer transverse side of the abutment plate 47 to abut against the inner transverse side of the lower flange 112 of the longitudinal beam 11 after both the first mounting plate 41 and the second mounting plate 42 are connected and fixed to the longitudinal beam 11. Furthermore, the top surface of the abutment plate 47 can abut against and be welded to the bottom of the first crossbeam 12, thereby improving the connection stability between the first mounting base 4 and the longitudinal beam 11.

[0089] Specifically, the abutment plate 47 is provided with multiple through holes 471, and the second mounting plate 42 is also provided with multiple through holes. The multiple through holes 471 and multiple through holes are arranged one-to-one for the fasteners to pass through, so as to realize the detachable connection between the abutment plate 47 and the second mounting plate 42. In other embodiments, holes may also be provided on the first crossbeam 12 for the fasteners to pass through, so that the detachable connection between the abutment plate 47, the second mounting plate 42 and the first crossbeam 12 can be realized simultaneously through the fasteners.

[0090] Each first mounting base 4 may further include multiple third reinforcing plates 46, which are spaced apart and connected between the abutment plate 47 and the longitudinal beam 11 to improve the connection strength between the first mounting base 4 and the longitudinal beam 11, thereby improving the stability of the bracket 21. Specifically, the top of the third reinforcing plate 46 is welded and fixed to the upper wing plate 111, and the third reinforcing plate 46 is welded and fixed to the transverse inner side of the web plate 113. At this time, the bottom of the third reinforcing plate 46 is simultaneously welded and fixed to the top of the lower wing plate 112 and the top of the abutment plate 47. The third reinforcing plate 46 is perpendicular to the web plate 113 and perpendicular to the abutment plate 47.

[0091] refer to Figures 1-4 The longitudinal dimension of bracket 21 gradually decreases from top to bottom. That is, bracket 21 has a shape that is larger at the top and smaller at the bottom. This design allows bracket 21 to have the largest surface area at its top, resulting in a larger contact area with the second mounting plate 42, which facilitates improved connection strength between bracket 21 and the second mounting plate 42. Furthermore, the design of bracket 21 gradually decreasing in size from top to bottom also reduces the weight of bracket 21, thus contributing to the lightweighting of the frame 100. Specifically, one longitudinal side of bracket 21 gradually moves away from the other longitudinal side from bottom to top.

[0092] refer to Figures 1-4 The airbag assemblies and support assemblies of each air suspension 2 are distributed longitudinally at intervals. At this time, the side of the support 21 closest to the airbag assembly along the longitudinal direction gradually approaches the airbag assembly from bottom to top.

[0093] Each airbag assembly is located below a second crossbeam 13. Each airbag assembly includes two airbags 22 spaced laterally, with each airbag 22 corresponding to one of the two longitudinal beams 11. That is, a second crossbeam 13 connects each airbag 22 of each airbag assembly to the longitudinal beam 11. This ensures a high connection strength between the two longitudinal beams 11 while improving the rigidity of the connection between the longitudinal beam 11 and the airbag 22, thus preventing cracks caused by excessive stress during use and extending the service life of the frame 100.

[0094] In this embodiment, each airbag assembly is detachably connected to the vehicle frame body 1. The vehicle frame 100 also includes multiple second mounting components, and each airbag assembly is detachably connected to the vehicle frame body 1 through a second mounting component. This facilitates quick assembly and disassembly of the airbag assembly and the vehicle frame body 1, enabling operations such as airbag assembly replacement.

[0095] Each second mounting component includes two second mounting seats 5, which are fixedly connected to the two longitudinal beams 11 in a one-to-one correspondence, and the two airbags 22 are detachably connected to the two second mounting seats 5 in a one-to-one correspondence. In other embodiments, the two second mounting seats 5 may also be detachably connected to the two longitudinal beams 11 in a one-to-one correspondence, and the two airbags 22 may be fixedly connected to the two second mounting seats 5 in a one-to-one correspondence.

[0096] Figure 6 This is a schematic diagram of the structure of the second mounting base 5 in this embodiment.

[0097] refer to Figures 1-4 , Figure 6In this embodiment, each airbag 22 is provided with a plurality of second fasteners. Each second mounting base 5 is provided with a plurality of second mounting holes 54, and the plurality of second mounting holes 54 correspond one-to-one with the plurality of second fasteners on each airbag 22. Each second mounting hole 54 is used for a second fastener to pass through, so as to realize the connection and fixation between the second mounting base 5 and the airbag 22.

[0098] Specifically, each second mounting base 5 includes a fixing plate 51, which is fixed to the bottom of the longitudinal beam 11. The fixing plate 51 has multiple second mounting holes 54. The fixing plate 51 is welded to the bottom of the longitudinal beam 11. The inner lateral end of the fixing plate 51 extends inward beyond the longitudinal beam 11, and the outer lateral end of the fixing plate 51 extends outward beyond the longitudinal beam 11. This design provides a large contact area between the fixing plate 51 and the airbag 22, thereby improving the connection strength between the fixing plate 51 and the airbag 22.

[0099] The second fastener can be a bolt, nut, rivet, etc.

[0100] The second mounting base 5 also includes a plurality of reinforcing plates, which are fixed at intervals between the transverse side of the longitudinal beam 11 and the fixing plate 51. Specifically, the plurality of reinforcing plates includes at least two first reinforcing plates 52 and at least two second reinforcing plates 53.

[0101] All the first reinforcing plates 52 are longitudinally spaced between the outer side of the web 113 and the fixing plate 51, and are welded and fixed to the web 113 and the fixing plate 51 respectively. The first reinforcing plates 52 are perpendicular to the web 113 and the fixing plate 51 respectively.

[0102] All the second reinforcing plates 53 are longitudinally spaced between the transverse inner side of the web 113 and the fixing plate 51. Specifically, the second reinforcing plates 53 are welded and fixed to the transverse inner side of the web 113. The bottom of the transverse outer end of each second reinforcing plate 53 is recessed upward to form a receiving groove for accommodating the lower flange 112 of the longitudinal beam 11, so that the bottom surface of the second reinforcing plate 53 can simultaneously fit and weld with the top surface of the lower flange 112 and the top surface of the fixing plate 51. Optionally, the top surface of the second reinforcing plate 53 is welded and fixed to the upper flange 111. Through the above connection method, the connection strength between the second reinforcing plate 53 and the longitudinal beam 11 can be improved, thereby improving the connection strength between the second mounting base 5 and the longitudinal beam 11, and thus improving the stability of the second mounting base 5. The second reinforcing plates 53 are perpendicular to the web 113, the upper flange 111, the lower flange 112 and the fixing plate 51.

[0103] In this embodiment, each airbag 22 is an elastic element that can produce vertical elastic deformation by inflation and deflation.

[0104] refer to Figures 1-4Each air suspension 2 also includes two cantilever arms 23, each cantilever arm 23 connecting a bracket 21 and an airbag 22 arranged on the same longitudinal beam 11. Each cantilever arm 23 is hinged to the bracket 21 and fixedly connected to the airbag 22. Specifically, one end of the cantilever arm 23 extends longitudinally into the bracket 21 and is hinged to the bracket 21 via a hinge shaft 24 extending laterally. The other end of the cantilever arm 23 is fixedly connected to the bottom of the airbag 22. That is, the bracket 21 and the airbag 22 are linked in a one-to-one correspondence through the cantilever arms 23. When the airbag 22 undergoes elastic deformation, the end of the cantilever arm 23 connected to the airbag 22 can move up and down, and the other end of the cantilever arm 23 can rotate relative to the bracket 21.

[0105] Figure 7 for Figure 1 Enlarged structural diagram at point A in the middle. Figure 8 for Figure 2 Enlarged structural diagram at point B.

[0106] refer to Figures 1-4 , Figure 7 and Figure 8 The connecting assembly includes multiple connecting beams 31, each connecting beam 31 corresponding to two supports 21 of a support assembly, thereby connecting the two supports 21 into a single structure in the lateral direction, improving the structural strength of the two supports 21 in the lateral direction. This design can transmit the external force on the support 21 vertically to the longitudinal beam 11 and simultaneously horizontally to the connecting beam 31, thus dispersing the external force on the support 21 in multiple directions, avoiding stress concentration in one direction, and effectively suppressing torsional deformation of the support 21 under dynamic loads. This ensures the support strength of the support 21, improves the structural strength and stability of the frame 100, and extends the service life of the frame 100. Specifically, the connecting beams 31 are welded and fixed to the longitudinal middle of the supports 21.

[0107] Furthermore, the connecting beam 31 is located below the first crossbeam 12 arranged corresponding to the bracket assembly and is connected to the first crossbeam 12 arranged correspondingly. That is, in this embodiment, the connecting beam 31 and the first crossbeam 12 are also connected into an integral structure in the vertical direction, so that the connecting beam 31 and the first crossbeam 12 can transmit force to avoid stress concentration. This can improve the structural strength and torsional resistance of the connecting beam 31 in the vertical direction, thereby improving the structural strength of the air suspension 2 and even the entire frame 100.

[0108] Specifically, the connecting beam 31 and the first crossbeam 12 are arranged in a longitudinal direction at intervals. Furthermore, the connecting beam 31 is located on the side of the first crossbeam 12 opposite to the opening side.

[0109] In this embodiment, the connecting assembly further includes a plurality of connecting plates 32, and each connecting beam 31 is connected to the correspondingly arranged first crossbeam 12 through at least one connecting plate 32. Specifically, each connecting beam 31 is connected to the first crossbeam 12 through two connecting plates 32 arranged laterally at intervals.

[0110] Figure 9 This is a schematic diagram of the connecting plate 32 in this embodiment.

[0111] refer to Figures 7-9 The connecting plate 32 includes a connecting portion 321 located between the connecting beam 31 and the first crossbeam 12. The upper end of the connecting portion 321 is detachably connected to one longitudinal side of the first crossbeam 12, and the lower end of the connecting portion 321 is fixedly connected to one longitudinal side of the connecting beam 31. This facilitates quick assembly and disassembly between the connecting beam 31 and the first crossbeam 12, thereby enabling the assembly and disassembly of the support assembly to the first crossbeam 12. Alternatively, the connecting portion 321 may be fixedly connected to the first crossbeam 12 and detachably connected to the connecting beam 31. Or, the connecting portion 321 may be detachably connected to both the first crossbeam 12 and the connecting beam 31.

[0112] Specifically, the connecting portion 321 extends vertically and is attached to and connected to the connecting beam 31 and the first crossbeam 12, respectively, which improves the connection strength between the connecting plate 32 and the first crossbeam 12. Furthermore, since the connecting beam 31 is located on the side of the first crossbeam 12 away from the opening, this design facilitates the close fit between the connecting portion 321 and the first crossbeam 12, and the two have a large contact area, thus improving the connection strength between the connecting plate 32 and the first crossbeam 12.

[0113] The upper end of the connecting part 321 is provided with a plurality of connecting holes 324 at intervals. The first crossbeam 12 is provided with a plurality of through holes corresponding one-to-one with the plurality of connecting holes 324 on each connecting part 321. Each connecting hole 324 and its corresponding through hole are used for a connector to pass through, so as to realize the detachable connection between the connecting part 321 and the first crossbeam 12. Specifically, the connector can be a bolt, nut, rivet, etc.

[0114] In this embodiment, the lateral end of the connecting part 321 is flush with the lateral end of the connecting beam 31. Since the lateral end of the connecting beam 31 is fixedly connected to the bracket 21, the lateral end of the connecting beam 31 experiences significant stress. Therefore, connecting the lateral end of the connecting beam 31 to the first crossbeam 12 via the connecting part 321 provides support for the lateral end of the connecting beam 31, thereby reducing the stress on the lateral end of the connecting beam 31 and improving the structural strength and stability of the bracket 21 and even the frame 100.

[0115] The connecting part 321 has an inward recessed relief groove 325 on its lateral outer side. The relief groove 325 is used to accommodate the lateral inner end of the lower flange 112 of the longitudinal beam 11, the second mounting plate 42 and the abutment plate 47. This allows the lateral end of the connecting part 321 to be flush with the lateral end of the connecting beam 31 while avoiding interference between the connecting part 321 and the lower flange 112, the second mounting plate 42 and the abutment plate 47.

[0116] The top surface of the connecting part 321 at the clearance groove 325 and the bottom surface of the second mounting plate 42 are vertically spaced. The shifting connecting plate 32 provides adjustable space in the vertical direction so that the connecting hole 324 on the connecting part 321 can correspond one-to-one with the through hole on the first crossbeam 12, so that the connecting piece can pass through smoothly.

[0117] In this embodiment, the connecting plate 32 further includes a first reinforcing part 322, which is connected to the bottom of the connecting part 321 and located below the connecting beam 31. The first reinforcing part 322 is inclined from top to bottom in a direction away from the first crossbeam 12. This design avoids interference between the first reinforcing part 322 and the connecting beam 31, ensuring that the connecting part 321 can cover the connecting beam 31 vertically, thus providing a larger contact area between the connecting part 321 and the connecting beam 31, and ensuring a high connection strength between the connecting plate 32 and the connecting beam 31. Furthermore, the inclined arrangement of the first reinforcing part 322 can also improve the structural strength of the connecting plate 32, and since it gradually moves away from the first connecting beam 31 from top to bottom, the first reinforcing part 322 and the first connecting beam 31 are positioned on opposite sides of the longitudinal direction of the connecting part 321, which facilitates improving the longitudinal torque resistance of the connecting plate 32.

[0118] The connecting plate 32 also includes a second reinforcing part 323, which is connected to the bottom of the first reinforcing part 322. The second reinforcing part 323 is inclined from top to bottom in a direction away from the first crossbeam 12. This design can further improve the structural strength of the connecting plate 32 and reduce deformation or damage caused by uneven stress or external forces.

[0119] Furthermore, the angle formed between the second reinforcing part 323 and the first reinforcing part 322 is an obtuse angle. That is, the inclination angles of the first reinforcing part 322 and the second reinforcing part 323 are different. This design allows the first reinforcing part 322 and the second reinforcing part 323 to guide stress transmission in multiple directions, avoid stress concentration in a single direction, and effectively suppress the torsional deformation of the connecting plate 32 under dynamic loads. This ensures the connection strength between the connecting beam 31 and the first crossbeam 12, thereby improving the structural strength and stability of the bracket 21 and even the frame 100.

[0120] refer to Figure 1 , Figure 2 , Figure 8 In this embodiment, the connecting beam 31 has an opening on one longitudinal side, and the opening direction of the connecting beam 31 is opposite to the opening direction of the first crossbeam 12. Since the connecting beam 31 and the first crossbeam 12 are spaced apart longitudinally, this design facilitates the close fit between the connecting portion 321 of the connecting plate 32 and the connecting beam 31, resulting in a large contact area. This improves the connection strength between the connecting plate 32 and the connecting beam 31. Furthermore, since the opening sides of the connecting beam 31 and the first crossbeam 12 are located on opposite longitudinal sides of the connecting plate 32, a mechanically complementary structure is formed between them. This allows for a more even distribution of bending and torsional stresses experienced by the frame 100 during operation, reducing the risk of localized stress concentration and significantly improving overall bending and torsional resistance. Specifically, the connecting beam 31 is a U-shaped beam.

[0121] Although the present invention has been described with reference to several typical embodiments, it should be understood that the terminology used is descriptive and exemplary, and not restrictive. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A vehicle frame, characterized by, include: The frame body extends longitudinally; the frame body includes two longitudinal beams and a plurality of first crossbeams, the two longitudinal beams are distributed laterally at intervals, and the plurality of first crossbeams are connected longitudinally at intervals between the two longitudinal beams; Multiple air suspensions are longitudinally spaced at the bottom of the vehicle frame body; each air suspension includes a support assembly and an airbag assembly distributed longitudinally at intervals; each support assembly is located below a first crossbeam; each support assembly includes two supports distributed laterally at intervals, and the two supports are arranged in a one-to-one correspondence with the two longitudinal beams. The connecting assembly includes multiple connecting beams, each connecting beam being connected between two supports of a support assembly; the connecting beam is located below the first crossbeam and is connected to the correspondingly arranged first crossbeam.

2. Frame according to claim 1, characterized in that The connecting beam and the corresponding first crossbeam are spaced apart in the longitudinal direction; The connecting assembly further includes a plurality of connecting plates, and each of the connecting beams is connected to the correspondingly arranged first crossbeam through at least one of the connecting plates; The connecting plate includes a connecting part located between the connecting beam and the first crossbeam. The upper end of the connecting part is detachably connected to one longitudinal side of the first crossbeam, and the lower end of the connecting part is fixedly connected to one longitudinal side of the connecting beam.

3. Frame according to claim 2, characterized in that The connecting plate further includes a first reinforcing part, which is connected to the bottom of the connecting part and is located below the connecting beam; the first reinforcing part is inclined from top to bottom in a direction away from the first crossbeam. The connecting plate further includes a second reinforcing part, which is connected to the bottom of the first reinforcing part; the second reinforcing part is inclined from top to bottom in a direction away from the first crossbeam; the included angle between the second reinforcing part and the first reinforcing part is an obtuse angle.

4. The frame of claim 1, wherein, The frame includes a plurality of first mounting components, and each bracket component is detachably connected to the frame body through a first mounting component; The first mounting component includes two first mounting seats, which are detachably connected to the two longitudinal beams in a one-to-one correspondence. Each of the first mounting seats is provided with a plurality of first mounting holes spaced apart, and each of the longitudinal beams is provided with a plurality of first fixing holes corresponding one-to-one with the plurality of first mounting holes on each of the first mounting seats. Each of the first mounting holes and the corresponding first fixing holes is used for a first fastener to pass through, so as to realize the detachable connection between the first mounting seat and the longitudinal beam. Each of the brackets in each bracket assembly is fixed to the bottom of a first mounting base.

5. The frame of claim 4, wherein, Each of the first mounting bases includes a first mounting plate and a second mounting plate, the second mounting plate being fixed to the bottom of the first mounting plate, and both the first mounting plate and the second mounting plate having a plurality of first mounting holes spaced apart. The first mounting plate is detachably connected to the outer side of the longitudinal beam via the first fastener, and the second mounting plate is detachably connected to the bottom of the longitudinal beam via the first fastener. The bottom of the second mounting plate is fixedly connected to the bracket.

6. The frame of claim 5, wherein, Each of the first mounting bases further includes a plurality of first reinforcing plates, which are fixedly spaced between the first mounting plate and the second mounting plate; and / or, Each of the first mounting bases further includes a plurality of second reinforcing plates, which are fixed at intervals between the second mounting plate and the bracket.

7. The frame according to claim 1, characterized in that, The vehicle frame includes multiple second mounting components, and each airbag assembly is detachably connected to the vehicle frame body via a second mounting component. Each of the second mounting components includes two second mounting seats, and the two second mounting seats are fixedly connected to the two longitudinal beams in a one-to-one correspondence; Each of the airbag assemblies includes two airbags, and the two airbags are detachably connected to the two second mounting seats in a one-to-one correspondence; Each airbag is provided with a plurality of second fasteners; each second mounting base is provided with a plurality of second mounting holes, and the plurality of second mounting holes correspond one-to-one with the plurality of second fasteners on each airbag. Each second mounting hole is used for a second fastener to pass through, so as to realize the connection and fixation between the second mounting base and the airbag.

8. Frame according to claim 7, characterized in that Each of the second mounting bases includes a fixing plate, the fixing plate being fixed to the bottom of the longitudinal beam, and the fixing plate being provided with a plurality of second mounting holes; The second mounting base also includes a plurality of reinforcing plates, which are fixed at intervals between the transverse side of the longitudinal beam and the fixing plate.

9. The frame of claim 1, wherein, The vehicle frame body also includes a plurality of second crossbeams that are longitudinally spaced between the two longitudinal beams, and the plurality of second crossbeams are arranged in a one-to-one correspondence with the plurality of airbag assemblies; the second crossbeams are distributed adjacent to the first crossbeams.

10. The frame of claim 1, wherein, Each of the airbag assemblies includes two airbags spaced apart laterally, and the two airbags are arranged in a one-to-one correspondence with the two longitudinal beams; Each of the air suspensions further includes two cantilever arms, each cantilever arm being used to connect the bracket and the airbag arranged on the same longitudinal beam; each cantilever arm is hinged to the bracket and fixedly connected to the airbag.

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