Suspension beam assembly and vehicle

Abstract

The utility model provides a suspension cross beam assembly and a vehicle. The suspension cross beam assembly comprises a suspension cross beam, a first connecting support and a second connecting support, the suspension cross beam is provided with a suspension mounting point used for mounting the suspension support, one end of the suspension cross beam is connected with the first connecting support, and the other end of the suspension cross beam is connected with the second connecting support; wherein a part of the structure of the first connecting support extends into the suspension cross beam and is fixedly connected with the suspension cross beam, and a part of the structure of the second connecting support extends into the suspension cross beam and is fixedly connected with the suspension cross beam; the first connecting support and the second connecting support are further used for being fixedly connected with a frame of a vehicle so that the suspension beam assembly can be fixedly connected with the frame. According to the scheme, the inherent frequency of the suspension beam assembly can be improved, and then the vibration isolation rate of the suspension is improved.

Description

Technical Field

[0001] The present application relates to the technical field of range extender suspension, and in particular to a suspension beam assembly and a vehicle. Background Art

[0002] In the development process of the range extender suspension system for commercial vehicles (especially light trucks and buses), the range extender suspension often adopts a three-point suspension (a point at the front end of the engine, a point at the generator end, and an auxiliary suspension on the left (right)). Unlike the transverse power layout of passenger cars, the power layout of commercial vehicles is basically longitudinal. Then the support point of the suspension at the front end of the engine needs to be installed on the crossbeam, and the lateral span of the frame is generally about 0.8m. Due to the layout restrictions of the radiator assembly at the front end of the engine (or due to restrictions on the wheelbase, vehicle length, etc. of the entire vehicle), the space available in the front and rear is often limited, which will cause the crossbeam supporting the front suspension of the engine to be slender, resulting in a low modal natural frequency of the crossbeam, which in turn affects the vibration isolation rate of the suspension. Utility Model Content

[0003] The present application provides a suspension crossbeam assembly and a vehicle, which can increase the natural frequency of the suspension crossbeam assembly and thereby increase the vibration isolation rate of the suspension.

[0004] In a first aspect, the present application provides a suspension beam assembly, comprising a suspension beam, a first connecting bracket and a second connecting bracket, wherein the suspension beam is provided with a suspension mounting point for mounting the suspension bracket, one end of the suspension beam is connected to the first connecting bracket, and the other end is connected to the second connecting bracket; wherein a partial structure of the first connecting bracket extends into the suspension beam and is fixedly connected to the suspension beam, and a partial structure of the second connecting bracket extends into the suspension beam and is fixedly connected to the suspension beam; the first connecting bracket and the second connecting bracket are also used to be fixedly connected to a frame of a vehicle so that the suspension beam assembly is fixedly connected to the frame.

[0005] Optionally, at least one of the first connecting bracket and the second connecting bracket is detachably connected to the suspension beam.

[0006] Optionally, the suspension beam is provided with a first mounting hole for a first bolt to pass through and a second mounting hole for a second bolt to pass through, the first mounting hole matches the first bolt, the first bolt passes through the first mounting hole to connect the first connecting bracket and the suspension beam; the second mounting hole extends along the length direction of the suspension beam, and the second bolt can be optionally passed through any position of the second mounting hole to connect the second connecting bracket and the suspension beam.

[0007] Optionally, a plurality of first mounting holes are provided, and the number of the first bolts corresponds to the number of the first mounting holes one by one; the plurality of first mounting holes at least include a first top mounting hole and a first side mounting hole, the first top mounting hole is provided on the top wall of the suspension beam, and the first side mounting hole is provided on the side wall of the suspension beam; and / or

[0008] There are multiple second mounting holes, and the number of second bolts corresponds to the number of second mounting holes; the multiple second mounting holes include at least a second top mounting hole and a second side mounting hole, the second top mounting hole is arranged on the top wall of the suspension beam, and the second side mounting hole is arranged on the side wall of the suspension beam.

[0009] Optionally, a first nut is pre-fixed at a corresponding position between the first connecting bracket and the first mounting hole, and the first bolt is threadedly matched with the first nut to fixedly connect the suspension beam and the first connecting bracket.

[0010] Optionally, the suspended beam includes a beam body and a reinforcement plate, the beam body is a semi-enclosed structure, the beam body has a cavity, an opening connected to the cavity is formed at the lower part of the beam body, the reinforcement plate is provided with reinforcement ribs extending upward, the reinforcement plate is arranged in the cavity through the opening, and is fixedly connected to the inner wall of the beam body.

[0011] Optionally, the suspension mounting point includes at least one third mounting hole, which is used for screwing with the suspension bracket; the reinforcing plate is provided with at least one torque tool hole, which is arranged corresponding to the third mounting hole, and the aperture of the torque tool hole is larger than the aperture of the third mounting hole, so as to allow the torque tool to pass through.

[0012] Optionally, the first connecting bracket includes a first crossbeam connecting portion and a first frame connecting portion which are connected to each other, the first crossbeam connecting portion extends into the suspension crossbeam and is fixedly connected to the suspension crossbeam, the first frame connecting portion has a first welding surface, the area of ​​the first welding surface is larger than the cross-sectional area of ​​the suspension crossbeam, and the first welding surface is used for welding to the frame.

[0013] Optionally, the first beam connecting portion is adapted to the inner cavity of the suspension beam, and the first beam connecting portion includes a first top wall and two first side walls; the two first side walls are respectively connected to the opposite ends of the first top wall; the first top wall and the two first side walls are both inserted into the suspension beam and connected to the suspension beam bolts.

[0014] In a second aspect, the present application provides a vehicle, comprising: a suspension beam assembly as described in any one of the above items; a suspension bracket installed at the suspension mounting point; and a range extender fixedly connected to the suspension bracket.

[0015] The suspension beam assembly and vehicle provided by the present application have at least the following advantages:

[0016] On the one hand, extending part of the structure of the first connecting bracket and part of the structure of the second connecting bracket into the suspension beam and fixedly connected to the suspension beam can improve the bending stiffness of the suspension beam; on the other hand, compared with directly fixing the suspension beam to the frame, fixing the suspension beam to the frame through the first connecting bracket and the second connecting bracket can reduce the mass of the suspension beam itself. Therefore, this solution can reduce the mass of the suspension beam and improve the stiffness of the suspension beam, thereby improving the natural frequency of the suspension beam; it is easy to understand that when the suspension beam vibrates at a low frequency, it will cause greater displacement and deformation, and store more energy in the low-frequency vibration section, resulting in poor vibration transmission and vibration isolation effects. In addition, low-frequency vibration may also coincide with the road surface frequency when the vehicle is driving, thereby generating a resonance phenomenon, making the vibration transmission of the suspension beam more prominent, affecting the venousness of the vehicle. Therefore, the suspension beam of this solution has a higher natural frequency, which can avoid low-frequency vibration and resonance as much as possible, thereby improving the vibration isolation rate of the entire suspension beam assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a structural schematic diagram of a suspension beam assembly shown in an exemplary embodiment of the present application;

[0018] Figure 2 is an exploded structural schematic diagram of a suspension beam assembly shown in an exemplary embodiment of the present application;

[0019] Figure 3 is a structural schematic diagram of a first connecting bracket shown in an exemplary embodiment of the present application;

[0020] Figure 4 is a schematic diagram of an exploded structure of a suspended crossbeam shown in an exemplary embodiment of the present application;

[0021] Figure 5 It is a schematic diagram showing the position of a suspension transverse assembly installed on a vehicle frame according to an exemplary embodiment of the present application.

[0022] 10. Suspension beam; 11. Suspension mounting point; 12. First mounting hole; 121. First top mounting hole; 122. First side mounting hole; 13. Second mounting hole; 131. Second top mounting hole; 132. Second side mounting hole; 14. Beam body; 141. Chamfer; 15. Reinforcement plate; 151. Reinforcement rib; 152. Torque tool hole; 20. First connecting bracket; 21. First through hole; 22. First beam connecting part ; 221, first top wall; 222, first side wall; 23, first frame connection; 231, first welding surface; 232, mating edge; 30, second connecting bracket; 31, second through hole; 32, second crossbeam connection; 33, second frame connection; 41, first bolt; 42, first nut; 43, second bolt; 50, suspension bracket; 51, suspension vibration isolation pad; 52, bracket body; 60, frame; 70, range extender. DETAILED DESCRIPTION

[0023] Here, exemplary embodiments will be described in detail, and examples thereof are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are only examples of devices and methods consistent with some aspects of the present application.

[0024] The terms used in this application are only for the purpose of describing specific embodiments, and are not intended to limit this application. Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. The "first", "second" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, similar words such as "one" or "one" do not indicate quantity restrictions, but indicate that there is at least one, and will be separately described if only "one" is referred to. "Multiple" or "several" means two or more. Unless otherwise specified, similar words such as "front", "rear", "lower" and / or "upper", "top", "bottom" are only for the convenience of explanation, and are not limited to one position or one spatial orientation. Similar words such as "include" or "comprise" mean that the elements or objects appearing in front of "include" or "comprise" cover the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. The words "connected" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0025] The present application provides a suspension beam assembly and a vehicle. The suspension beam assembly and the vehicle of the present application are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the features in the following embodiments and implementations may be combined with each other.

[0026] refer to Figure 1 and Figure 2 The embodiment of the present application provides a suspension beam assembly, including a suspension beam 10, a first connecting bracket 20 and a second connecting bracket 30. The suspension beam 10 is provided with a suspension mounting point 11 for mounting a suspension bracket 50. One end of the suspension beam 10 is connected to the first connecting bracket 20, and the other end is connected to the second connecting bracket 30; wherein, a part of the structure of the first connecting bracket 20 extends into the suspension beam 10 and is fixedly connected to the suspension beam 10, and a part of the structure of the second connecting bracket 30 extends into the suspension beam 10 and is fixedly connected to the suspension beam 10; and the first connecting bracket 20 and the second connecting bracket 30 are also used to be fixedly connected to a frame 60 of a vehicle so that the suspension beam assembly is fixedly connected to the frame 60.

[0027] By adopting the above scheme, on the one hand, the partial structure of the first connecting bracket 20 and the partial structure of the second connecting bracket 30 are extended into the suspension beam 10 and fixedly connected to the suspension beam 10, so that the bending stiffness of the suspension beam 10 can be improved; on the other hand, compared with directly fixing the suspension beam 10 to the frame 60, the mass of the suspension beam 10 itself can be reduced by fixing the suspension beam 10 to the frame 60 through the first connecting bracket 20 and the second connecting bracket 30. Therefore, this scheme can reduce the mass of the suspension beam 10 and improve the stiffness of the suspension beam 10, and then can improve the natural frequency of the suspension beam 10; it is easy to understand that when the suspension beam 10 vibrates at a low frequency, it will cause greater displacement and deformation, and store more energy in the low-frequency vibration section, resulting in poor vibration transmission and vibration isolation effects. In addition, the low-frequency vibration may also coincide with the road surface frequency when the vehicle is driving, thereby generating a resonance phenomenon, making the vibration transmission of the suspension beam 10 more prominent, affecting the venousness of the vehicle. Therefore, the suspension beam 10 of this embodiment has a relatively high natural frequency, and can avoid low-frequency vibration and resonance as much as possible, thereby improving the vibration isolation rate of the entire suspension beam assembly.

[0028] In one embodiment, at least one of the first connecting bracket 20 and the second connecting bracket 30 is detachably connected to the suspension beam 10. Preferably, both the first connecting bracket 20 and the second connecting bracket 30 are detachably connected to the suspension beam 10. In this way, when the suspension beam 10 needs to be repaired or replaced, the suspension beam 10 can be easily removed from the first connecting bracket 20 and the second connecting bracket 30, which can save time and improve efficiency.

[0029] The above-mentioned detachable connection may be in the form of bolt connection, spring pin connection, clamping connection, etc., but is not limited thereto.

[0030] refer to Figure 2 and Figure 3 In one embodiment, the suspension beam 10 is provided with a first mounting hole 12 for the first bolt 41 to pass through and a second mounting hole 13 for the second bolt 43 to pass through. The first mounting hole 12 matches the first bolt 41. The first bolt 41 passes through the first mounting hole 12 to connect the first connecting bracket 20 and the suspension beam 10. The second mounting hole 13 extends along the length direction of the suspension beam 10. The second bolt 43 can be selectively passed through any position of the second mounting hole 13 to connect the second connecting bracket 30 and the suspension beam 10. The second mounting hole 13 is arranged along the length direction of the suspension beam 10 ( Figure 1 In this case, the second bolt 43 can be inserted into any position of the second mounting hole 13, that is, the insertion position of the second bolt 43 can change the fixing position of the suspension beam 10 and the second connecting bracket 30. It is easy to understand that in industrial manufacturing, the length of the suspension beam 10 may have errors, and the suspension beam 10 with errors in manufacturing is difficult to be smoothly installed with the first connecting bracket 20 and the second connecting bracket 30. Therefore, in this embodiment, the second bolt 43 can move in the second mounting hole 13 and select a suitable position to be fixed to eliminate the above-mentioned length error, so that the installation of the suspension beam 10 and the first connecting bracket 20 and the second connecting bracket 30 is smoother.

[0031] It should be noted that the first mounting hole 12 and the first bolt 41 match each other in that the diameter of the first mounting hole 12 is substantially equal to the diameter of the threaded section of the first bolt 41, so that the threaded section of the first bolt 41 can just pass through the first mounting hole 12. In addition, in this embodiment, the first connecting bracket 20 may be provided with a first through hole 21 corresponding to the first mounting hole 12, so that the first bolt 41 can pass through the first mounting hole 12 and the first through hole 21, and connect the suspension beam 10 and the first connecting bracket 20, and the second connecting bracket 30 may be provided with a second through hole 31 corresponding to the second mounting hole 13, so that the second bolt 43 can pass through the mounting hole and the second through hole 31, and connect the suspension beam 10 and the second connecting bracket 30, which will not be described in detail in this embodiment.

[0032] In one embodiment, reference Figure 3 and Figure 4, a plurality of first mounting holes 12 are provided, and the number of first bolts 41 corresponds to the number of first mounting holes 12 one by one. For example, the number of first mounting holes 12 can be 2, and the number of first bolts 41 is 2; or, the number of first mounting holes 12 can be 3, and the number of first bolts 41 is also 3, but it is not limited thereto. Among them, the plurality of first mounting holes 12 can at least include a first top mounting hole 121 and a first side mounting hole 122, the first top mounting hole 121 is provided on the top wall of the suspension beam 10, and the first side mounting hole 122 is provided on the side wall of the suspension beam 10. Similarly, a plurality of second mounting holes 13 can also be provided, and the number of second bolts 43 corresponds to the number of second mounting holes 13 one by one. For example, the number of second mounting holes 13 can be 2, and the number of second bolts 43 is also 2; or, the number of second mounting holes 13 can be 3, and the number of second bolts 43 is also 3, but it is not limited thereto. Among them, the plurality of second mounting holes 13 may include at least a second top mounting hole 131 and a second side mounting hole 132, the second top mounting hole 131 is provided on the top wall of the suspension beam 10, and the second side mounting hole 132 is provided on the side wall of the suspension beam 10. It is easy to understand that when the suspension beam 10 is directly fixed to the frame 60, generally only the contact surface of the suspension beam 10 and the frame 60 is connected, while in this solution, the suspension beam 10 is fixed to the first connecting bracket 20 and the second connecting bracket 30 respectively by a plurality of first bolts 41 and a plurality of second bolts 43, and fixed connection points are provided on the top wall and the side wall of the suspension beam 10, which can improve the stability of the connection and increase the natural frequency of the suspension beam 10.

[0033] like Figure 2 and Figure 3 In the illustrated embodiment, there is one first top mounting hole 121, two first side mounting holes 122, and the suspension beam 10 includes two oppositely disposed side walls, each of which is provided with a first side mounting hole 122. There is one second top mounting hole 131, two second side mounting holes 132, and one second side mounting hole 132 is provided on each side wall of the suspension beam 10. The first top mounting hole 121 and the first side mounting hole 122 are circular holes, and the second top mounting hole 131 and the second side mounting hole 132 are waist-shaped holes, and the extending direction of the waist-shaped holes is the length direction of the suspension beam 10.

[0034] Continue to refer Figure 3 In one embodiment, the first connection bracket 20 and the first mounting hole 12 are pre-fixed with a first nut 42 at the corresponding position, and the first bolt 41 is threadedly matched with the first nut 42 to fix the suspension beam 10 and the first connection bracket 20. In this way, the installation efficiency can be accelerated and the installation interference with other structures can be avoided when the first nut 42 is screwed in later.

[0035] In a specific embodiment, the first connecting bracket 20 includes a first crossbeam connecting portion 22 and a first frame connecting portion 23 that are connected to each other. The first crossbeam connecting portion 22 extends into the suspension crossbeam 10 and is fixedly connected to the suspension crossbeam 10. Furthermore, the first crossbeam connecting portion 22 is adapted to the inner cavity of the suspension crossbeam 10. The first crossbeam connecting portion 22 includes a first top wall 221 and two first side walls 222. The two first side walls 222 are respectively connected to the opposite ends of the first top wall 221. The first top wall 221 and the two first side walls 222 are both inserted into the suspension crossbeam 10 and are bolted to the suspension crossbeam 10.

[0036] Exemplarily, the top wall and the two side walls of the suspension beam 10 are provided with first mounting holes 12, the first top wall 221 and the two first side walls 222 are provided with first through holes 21 corresponding to the first mounting holes 12, the first bolts 41 are passed through the corresponding first mounting holes 12 and the first through holes 21, and the first nuts 42 are screwed into the first bolts 41, so that the first bolts 41 are fixedly connected to the suspension beam 10 and the first connecting bracket 20. The first nuts 42 may be pre-fixed on the two first side walls 222 of the first connecting bracket 20, so that installation interference caused by the two oppositely arranged first side walls 222 can be avoided. The first nuts 42 may be hexagonal nuts, but are not limited thereto.

[0037] In one embodiment, the first frame connection portion 23 has a first welding surface 231, the area of ​​the first welding surface 231 is larger than the cross-sectional area of ​​the suspension beam 10, and the first welding surface 231 is used for welding with the frame 60. In this way, compared with the suspension beam 10 being directly connected to the frame 60, the solution of welding and fixing with the first welding surface 231 in this embodiment can improve the connection reliability between the suspension beam assembly and the frame 60.

[0038] In the embodiment shown in the figure, the first frame connection part 23 is a plate-like structure, and chamfers 141 are provided at the four corners of the first frame connection part 23 to prevent the plate-like connection part of the first frame 60 from scratching the installer. The first crossbeam connection part 22 is a U-shaped structure, including a first top wall 221 and two first side walls 222, all of which are fixed to the first frame connection part 23. Among them, the first crossbeam connection part 22 can be integrally formed with the first frame connection part 23, but is not limited thereto.

[0039] In some embodiments, the structure and shape of the second connecting bracket 30 can be the same as the structure and shape of the first connecting bracket 20. For example, the second connecting bracket 30 includes a second cross beam connecting portion 32 and a second frame connecting portion 33. The specific connection and fixing methods can refer to the first connecting bracket 20, and the embodiments of the present application will not be repeated here.

[0040] Please continue to refer to Figure 4In one embodiment, the suspended crossbeam 10 includes a crossbeam body and a reinforcing plate 15. The crossbeam body is a semi-enclosed structure. The crossbeam body has a cavity. An opening communicating with the cavity is formed at the lower portion of the crossbeam body. The reinforcing plate 15 is provided with a reinforcing rib 151 extending upward. The reinforcing plate 15 is disposed in the cavity through the opening and is fixedly connected to the inner wall of the crossbeam body. In this way, the strength and rigidity of the crossbeam body can be improved while reducing the mass of the crossbeam body as much as possible.

[0041] Specifically, the reinforcing rib 151 can be integrally formed with the reinforcing plate 15, and both ends of the reinforcing plate 15 along the length direction (Y direction) are bent upward to form the above-mentioned reinforcing rib 151, but it is not limited to this. For example, in another embodiment, the reinforcing rib 151 is welded and fixed to the reinforcing plate 15. In this case, the reinforcing rib 151 can be set at any position on the reinforcing plate 15. Preferably, the reinforcing rib 151 is set at both ends of the reinforcing plate 15 along the length direction and extends upward. Among them, the reinforcing rib 151 is also a plate-like structure, but it is not limited to this. In one embodiment, the reinforcing plate 15 can be welded and fixed to the main body of the beam, but it is not limited to this. For example, in another embodiment, the reinforcing plate 15 can be integrally formed with the main body of the beam, that is, the suspended beam 10 is an integrally formed square tube structure.

[0042] In one embodiment, the first top mounting hole 121 and the second top mounting hole 131 are disposed on the top wall of the beam body, and the first side mounting hole 122 and the second side mounting hole 132 are disposed on the side wall of the beam body.

[0043] In one embodiment, the third mounting point includes at least one third mounting hole, which is used to be screwed with the suspension bracket 50; the reinforcing plate 15 is provided with at least one torque tool hole 152, which is arranged corresponding to the third mounting hole, and the aperture of the torque tool hole 152 is larger than the aperture of the third mounting hole, and is used for passing the torque tool. The torque tool hole 152 can reduce the weight of the entire suspension beam 10 on the one hand, and can pass the torque tool on the other hand, so that the operator can screw the suspension bracket 50 with the beam body 14 more easily. In the embodiment shown in the figure, the number of the third mounting holes is two, and the two third mounting holes are arranged in the middle of the beam body 14 and are arranged at intervals along the length direction of the beam body 14.

[0044] Continue to refer Figure 4 Combined with Figure 3In one embodiment, both ends of the beam body 14 along the length direction are provided with chamfers 141, which are arranged on the two side walls of the beam body 14 and extend obliquely downward from the edge of the side wall. On the one hand, the chamfers 141 can reduce the weight of the beam body 14 to increase the natural frequency of the beam body 14; on the other hand, the chamfers 141 can facilitate the first beam connection part 22 of the first connecting bracket 20 to be inserted into the beam body 14 and the second beam connection part 32 of the second connecting bracket 30 to be inserted into the beam body 14. In one embodiment, the first beam connection part 22 and the second beam connection part 32 can be provided with matching edges 232 corresponding to the chamfers 141, so that the first beam connection part 22 and the second beam connection part 32 can be inserted into the beam body 14 more smoothly.

[0045] Please refer to Figure 5 , and combined with Figures 1 to 4 An embodiment of the present application also provides a vehicle, comprising a suspension beam assembly, a suspension bracket 50 and a range extender 70 in any of the above embodiments and implementations, the suspension bracket 50 is installed at a suspension mounting point 11 on the suspension beam 10, and the range extender 70 is fixedly connected to the suspension bracket 50.

[0046] Specifically, the suspension bracket 50 includes a suspension vibration isolation pad 51 and a bracket body 52. ​​The suspension vibration isolation pad 51 is screwed to the cross beam body 14 through the two third mounting holes mentioned above, and the bracket body 52 is bolted and fixed on the suspension vibration isolation pad. The specific structures of the suspension vibration isolation pad 51 and the bracket body 52 can be referred to the relevant literature in the field, and this application does not make specific restrictions on this.

[0047] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A suspension beam assembly, characterized in that: It includes a suspension crossbeam, a first connecting bracket and a second connecting bracket. The suspension crossbeam is provided with a suspension mounting point for mounting the suspension bracket. One end of the suspension crossbeam is connected to the first connecting bracket, and the other end is connected to the second connecting bracket. Part of the structure of the first connecting bracket extends into the suspension crossbeam and is fixedly connected to the suspension crossbeam, and part of the structure of the second connecting bracket extends into the suspension crossbeam and is fixedly connected to the suspension crossbeam. The first connecting bracket and the second connecting bracket are also used for being fixedly connected to the frame of the vehicle so that the suspension crossbeam assembly is fixedly connected to the frame.

2. The suspension beam assembly according to claim 1, characterized in that: At least one of the first connecting bracket and the second connecting bracket is detachably connected to the suspension beam.

3. The suspension beam assembly according to claim 2, characterized in that: The suspension beam is provided with a first mounting hole for a first bolt to pass through and a second mounting hole for a second bolt to pass through, the first mounting hole matches the first bolt, the first bolt passes through the first mounting hole to connect the first connecting bracket and the suspension beam; the second mounting hole extends along the length direction of the suspension beam, the second bolt can be selectively passed through any position of the second mounting hole to connect the second connecting bracket and the suspension beam.

4. The suspension beam assembly according to claim 3, characterized in that: There are a plurality of the first mounting holes, and the number of the first bolts corresponds to the number of the first mounting holes; the plurality of the first mounting holes at least include a first top mounting hole and a first side mounting hole, the first top mounting hole is provided on the top wall of the suspension beam, and the first side mounting hole is provided on the side wall of the suspension beam; and / or There are multiple second mounting holes, and the number of second bolts corresponds to the number of second mounting holes; the multiple second mounting holes include at least a second top mounting hole and a second side mounting hole, the second top mounting hole is arranged on the top wall of the suspension beam, and the second side mounting hole is arranged on the side wall of the suspension beam.

5. The suspension beam assembly according to claim 3, characterized in that: A first nut is pre-fixed at a corresponding position of the first connecting bracket and the first mounting hole, and the first bolt is threadedly matched with the first nut to fixedly connect the suspension beam and the first connecting bracket.

6. The suspension beam assembly according to any one of claims 1 to 5, characterized in that: The suspended crossbeam includes a crossbeam body and a reinforcement plate. The crossbeam body is a semi-enclosed structure. The crossbeam body has a cavity. An opening communicating with the cavity is formed at the lower portion of the crossbeam body. The reinforcement plate is provided with reinforcement ribs extending upward. The reinforcement plate is arranged in the cavity through the opening and is fixedly connected to the inner wall of the crossbeam body.

7. The suspension beam assembly according to claim 6, characterized in that: The suspension mounting point includes at least one third mounting hole, and the third mounting hole is used to be screwed to the suspension bracket; the reinforcing plate is provided with at least one torque tool hole, and the torque tool hole is arranged corresponding to the third mounting hole. The aperture of the torque tool hole is larger than the aperture of the third mounting hole, and is used for allowing the torque tool to pass through.

8. The suspension beam assembly according to any one of claims 1 to 5 and 7, characterized in that: The first connecting bracket includes a first crossbeam connecting portion and a first frame connecting portion which are connected to each other. The first crossbeam connecting portion extends into the suspension crossbeam and is fixedly connected to the suspension crossbeam. The first frame connecting portion has a first welding surface. The area of ​​the first welding surface is larger than the cross-sectional area of ​​the suspension crossbeam. The first welding surface is used for welding to the frame.

9. The suspension beam assembly according to claim 8, characterized in that: The first beam connecting portion is adapted to the inner cavity of the suspension beam, and the first beam connecting portion includes a first top wall and two first side walls; the two first side walls are respectively connected to the opposite ends of the first top wall; the first top wall and the two first side walls are both inserted into the suspension beam and connected with the suspension beam bolts.

10. A vehicle, characterized in that: include: The suspension beam assembly according to any one of claims 1 to 9; A suspension bracket, mounted on the suspension mounting point; The range extender is fixedly connected to the suspension bracket.

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