Vehicle frame and vehicle

Abstract

The utility model belongs to the field of vehicle frames, and particularly relates to a vehicle frame and a vehicle. The vehicle frame is used for solving the technical problems that the NHV performance of an existing frame is poor, and vibration noise generated when an engine works can still be transmitted into a vehicle. The vehicle is used for solving the technical problems that an existing vehicle is low in NHV performance and poor in riding comfort of passengers. The vehicle frame comprises paired frame main beams, front suspension supports are rigidly connected to the paired frame main beams, and front suspension joists are rigidly connected between the paired frame main beams. The front suspension support is provided with a rigid connecting structure which is in rigid connection with the frame main beam, the rigid connecting structure extends along the frame main beam and comprises a joist connecting part, and the front suspension joist, the front suspension support and the frame main beam are in rigid connection through the joist connecting part at the same time. The front suspension joists, the front suspension supports and the paired frame main beams are connected with one another through the rigid connection effect in pairs, so that the vehicle frame has extremely high structural rigidity and extremely high shock insulation capacity, and then the NHV performance of the whole vehicle is improved.

Description

Technical Field

[0001] The utility model belongs to the field of vehicle frames, and particularly relates to a vehicle frame and a vehicle. Background Art

[0002] The NHV performance of a vehicle is an important performance that affects the riding comfort of passengers and drivers. However, when designing existing buses, usually only one-sidedly focuses on reliability and blindly improves the strength and stiffness of the vehicle frame, while ignoring the improvement of NVH performance. The vehicle frame designed based on the above design concept usually includes two main vehicle frame beams. Between the two main vehicle frame beams, a front suspension bracket, a front suspension support beam, a rear suspension bracket, and a rear suspension cross beam are arranged in sequence along the extending direction of the main beam. The front suspension support beam, the rear suspension cross beam, and the two main vehicle frame beams together form a rigid frame body. The engine is located between the two main vehicle frame beams and is connected to the rigid frame body through the front suspension bracket. When the engine is working, the vibration of the engine continuously acts on the main vehicle frame beam through the front suspension bracket. Since the front suspension support beam is arranged beside the front suspension bracket, the part between the front suspension support beam and the front suspension bracket lacks support and has limited stiffness. This makes the overall stiffness of the vehicle frame relatively limited. When facing the vibration impact of the engine, the vehicle frame is difficult to play an effective vibration isolation effect, so the NHV performance is not good. The vibration noise during the engine operation can still be transmitted to the interior of the vehicle, seriously affecting the riding experience of passengers. Content of the Utility Model

[0003] The purpose of the utility model is to provide a vehicle frame to solve the technical problem that the existing vehicle frame has poor NHV performance and the vibration noise during the engine operation can still be transmitted to the interior of the vehicle. The purpose of the utility model is to provide a vehicle to solve the technical problem that the existing vehicle has low NHV performance and poor riding comfort of passengers.

[0004] The following technical solutions are adopted in the utility model:

[0005] A vehicle frame includes paired main vehicle frame beams. Rigidly connected to each of the paired main vehicle frame beams are front suspension brackets for installing an engine. Rigidly connected between the paired main vehicle frame beams is a front suspension support beam for strengthening the main vehicle frame beams. The front suspension bracket is provided with a rigid connection structure for rigidly connecting to the main vehicle frame beam. The rigid connection structure extends along the main vehicle frame beam and includes a support beam connection part. The front suspension support beam, the front suspension bracket, and the main vehicle frame beam are simultaneously rigidly connected through the support beam connection part.

[0006] Further, the main frame girder is a first channel steel; the rigid connection structure includes a lower connecting plate for rigidly connecting with the lower flange of the first channel steel, the support beam connecting part is the part of the lower connecting plate corresponding to the front suspension support beam, the front suspension support beam includes a fixing plate, and the lower connecting plate, the fixing plate and the lower flange of the first channel steel are closely stacked and rigidly connected.

[0007] Further, the rigid connection structure further includes an upper connecting plate for rigidly connecting with the upper flange of the first channel steel.

[0008] Further, the front suspension bracket includes a second channel steel, the second channel steel is installed in the first channel steel in a butted manner, the lower flange of the second channel steel forms the lower connecting plate; the upper flange of the second channel steel forms the upper connecting plate; a first installation structure for installing the engine and a first avoidance notch for leaving an operation space for installing the front suspension bracket are arranged on the web of the second channel steel.

[0009] Further, the front suspension support beam includes a transverse arm, an inclined arm and a vertical arm; the inclined arms are arranged in pairs and are respectively rigidly connected to both ends of the transverse arm, the vertical arms are arranged in pairs and are respectively rigidly connected to the upper ends of the inclined arms, so that the front suspension support beam forms an upward-opening arched structure; the fixing plate is arranged at the upper end of the vertical arm.

[0010] Further, a strengthening arm is rigidly connected between the inclined arms arranged in pairs.

[0011] Further, rear suspension brackets for installing a transmission are rigidly connected to both of the paired main frame girders, and each rear suspension bracket includes an upper fixing part for rigidly connecting with the upper flange of the first channel steel and a lower fixing part for rigidly connecting with the lower flange of the first channel steel.

[0012] Further, the rear suspension bracket includes a third channel steel, the third channel steel is installed in the first channel steel in a butted manner, the upper flange of the third channel steel forms the upper fixing part, the lower flange of the third channel steel forms the lower fixing part, a second installation structure for installing the transmission and a second avoidance notch for leaving an operation space for installing the rear suspension bracket are arranged on the web of the third channel steel.

[0013] Further, the vehicle frame further includes front suspension brackets for rigidly connecting the main frame girders with the vehicle floor frame, and the front suspension brackets are arranged in pairs corresponding to the main frame girders.

[0014] Beneficial effects: The present utility model provides a brand-new vehicle frame. The vehicle frame of the present utility model includes a pair of main frame beams. Rigidly connected to each of the pair of main frame beams are front suspension brackets for installing an engine. Rigidly connected between the pair of main frame beams is a front suspension support beam for strengthening the main frame beams, so as to strengthen the stiffness of the vehicle frame through the front suspension support beam. The front suspension bracket is provided with a rigid connection structure for rigidly connecting with the main frame beam. The rigid connection structure extends along the main frame beam and includes a support beam connection portion. The front suspension support beam, the front suspension bracket, and the main frame beam are simultaneously rigidly connected through the support beam connection portion. Since the front suspension support beam is also rigidly connected to the front suspension bracket, the rigid reinforcement effect of the front suspension support beam can also directly act on the front suspension bracket, so as to rigidly connect the front suspension brackets distributed on the pair of main frame beams into one body. In the above structure, there are rigid connection effects between the front suspension support beam and the front suspension bracket, between the pair of main frame beams, between the pair of front suspension brackets, between the front suspension support beam and the main frame beam, and between the front suspension bracket and the main frame beam. These rigid connection effects are connected to each other, making the vehicle frame have extremely strong structural stiffness and extremely strong vibration isolation ability, and can effectively block the vibration noise during the operation of the engine, thereby improving the NVH performance of the whole vehicle.

[0015] A vehicle, comprising a vehicle frame and vehicle components mounted on the vehicle frame. The vehicle frame includes a pair of main frame beams. Rigidly connected to each of the pair of main frame beams are front suspension brackets for installing an engine. Rigidly connected between the pair of main frame beams is a front suspension support beam for strengthening the main frame beams. The front suspension bracket is provided with a rigid connection structure for rigidly connecting with the main frame beam. The rigid connection structure extends along the main frame beam and includes a support beam connection portion. The front suspension support beam, the front suspension bracket, and the main frame beam are simultaneously rigidly connected through the support beam connection portion.

[0016] Further, the main frame beam is a first channel steel; the rigid connection structure includes a lower connecting plate for rigidly connecting with the lower flange of the first channel steel. The support beam connection portion is the part of the lower connecting plate corresponding to the front suspension support beam. The front suspension support beam includes a fixing plate. The lower connecting plate, the fixing plate, and the lower flange of the first channel steel are closely stacked and rigidly connected.

[0017] Further, the rigid connection structure further includes an upper connecting plate for rigidly connecting with the upper flange of the first channel steel.

[0018] Further, the front suspension bracket includes a second channel steel. The second channel steel is installed in the first channel steel in a butted manner. The lower flange of the second channel steel constitutes the lower connecting plate; the upper flange of the second channel steel constitutes the upper connecting plate; on the web of the second channel steel are provided a first installation structure for installing an engine and a first avoidance notch for leaving an operation space for installing the front suspension bracket.

[0019] Furthermore, the front suspension beam includes a transverse arm, an inclined arm, and a vertical arm; the inclined arms are arranged in pairs and are respectively rigidly connected to both ends of the transverse arm, and the vertical arms are arranged in pairs and are respectively rigidly connected to the upper ends of the inclined arms, so that the front suspension beam forms an upward-opening arched structure; the fixing plate is arranged at the upper end of the vertical arm.

[0020] Furthermore, a reinforcing arm is rigidly connected between the inclined arms arranged in pairs.

[0021] Furthermore, rear suspension brackets for installing a gearbox are rigidly connected to both of the paired frame main beams. The rear suspension brackets include an upper fixing part for being rigidly connected to the upper flange of the first channel steel and a lower fixing part for being rigidly connected to the lower flange of the first channel steel.

[0022] Furthermore, the rear suspension bracket includes a third channel steel, which is installed in the first channel steel in a butted manner. The upper flange of the third channel steel constitutes the upper fixing part, the lower flange of the third channel steel constitutes the lower fixing part, and a second installation structure for installing the gearbox and a second avoidance notch for leaving an operation space for installing the rear suspension bracket are arranged on the web of the third channel steel.

[0023] Furthermore, the vehicle frame further includes front suspension brackets for rigidly connecting the frame main beams and the vehicle floor frame, and the front suspension brackets are arranged in pairs corresponding to the frame main beams.

[0024] Beneficial effects: The present utility model provides a brand-new vehicle frame. The vehicle frame of the present utility model includes paired frame main beams, and front suspension brackets for installing an engine are rigidly connected to both of the paired frame main beams. A front suspension beam for strengthening the frame main beams is rigidly connected between the paired frame main beams, so as to strengthen the stiffness of the vehicle frame through the front suspension beam. A rigid connection structure for being rigidly connected to the frame main beam is arranged on the front suspension bracket. The rigid connection structure extends along the frame main beam and includes a beam connection part. The front suspension beam, the front suspension bracket, and the frame main beam are simultaneously rigidly connected through the beam connection part. Since the front suspension beam is also rigidly connected to the front suspension bracket, the rigid reinforcement effect of the front suspension beam can also directly act on the front suspension bracket, so as to rigidly connect the front suspension brackets distributed on the paired frame main beams into one body. In the above structure, there are rigid connection effects between the front suspension beam and the front suspension bracket, between the paired frame main beams, between the paired front suspension brackets, between the front suspension beam and the frame main beam, and between the front suspension bracket and the frame main beam. These rigid connection effects are connected to each other, so that the vehicle frame has extremely strong structural stiffness and extremely strong vibration isolation ability, can effectively block the vibration noise during the operation of the engine, and further improve the NVH performance of the whole vehicle. Description of the Drawings

[0025] Figure 1 Is an axonometric view of the vehicle frame of the present utility model (without the second mounting structure);

[0026] Figure 2 Is Figure 1 The upper view of;

[0027] Figure 3 Is Figure 1 The front view of;

[0028] Figure 4 Is Figure 1 The axonometric view of the front suspension support beam and the front suspension bracket in;

[0029] Figure 5 Is Figure 1 The axonometric view of the rear suspension bracket in;

[0030] Figure 6 Is Figure 5 The axonometric view along another direction;

[0031] Figure 7 Is Figure 1 The structural schematic diagram when the front suspension bracket of is rigidly connected to the vehicle floor frame;

[0032] Figure 8 Is Figure 7 The separately enlarged view of the front suspension bracket and the vehicle floor frame in;

[0033] The names of the components corresponding to the corresponding reference numerals in the figure are: 1. Frame main beam; 2. Front suspension bracket; 3. Front suspension support beam; 4. First channel steel; 5. Lower connecting plate; 6. Upper connecting plate; 7. Second channel steel; 8. First mounting structure; 9. First inclined plate; 10. First reinforcing rib; 11. First avoidance notch; 12. Lateral arm; 13. Inclined arm; 14. Vertical arm; 15. Fixed plate; 16. Rear suspension bracket; 17. Upper fixing part; 18. Lower fixing part; 19. Third channel steel; 20. Second mounting structure; 21. Second avoidance notch; 22. Second inclined plate; 23. Second reinforcing rib; 24. Rear suspension cross beam; 25. Front suspension bracket; 26. Vehicle floor frame; 27. Support beam connecting part; 28. Reinforcing arm. Specific embodiments

[0034] The features and performance of the present utility model will be further described in detail below in conjunction with embodiments.

[0035] The design concept of the vehicle frame of the present utility model:

[0036] A vehicle frame includes a pair of main frame beams. Rigidly connected to each of the pair of main frame beams are front suspension brackets for mounting an engine, and rigidly connected between the pair of main frame beams is a front suspension support beam for strengthening the main frame beams, so as to strengthen the stiffness of the vehicle frame through the front suspension support beam.

[0037] The front suspension bracket is provided with a rigid connection structure for rigidly connecting with the main frame beam. The rigid connection structure extends along the main frame beam and includes a support beam connection part. The front suspension support beam, the front suspension bracket and the main frame beam are simultaneously rigidly connected through the support beam connection part. Since the front suspension support beam is also rigidly connected to the front suspension bracket, the rigid reinforcement effect of the front suspension support beam can also directly act on the front suspension bracket, so as to rigidly connect the front suspension brackets distributed on the pair of main frame beams into one body.

[0038] In the above structure, there are rigid connection effects between the front suspension support beam and the front suspension bracket, between the pair of main frame beams, between the pair of front suspension brackets, between the front suspension support beam and the main frame beam, and between the front suspension bracket and the main frame beam. These rigid connection effects are connected to each other, making the vehicle frame have extremely strong structural stiffness and extremely strong vibration isolation ability, and can effectively block the vibration noise during the operation of the engine, thereby improving the NVH performance of the whole vehicle.

[0039] An embodiment of the vehicle frame of the present utility model:

[0040] A vehicle frame, the structure of which can be referred to Figures 1-3 as shown, includes a pair of main frame beams 1. The pair of main frame beams 1 are arranged in parallel to carry components such as an engine and a gearbox. Rigidly connected to each of the pair of main frame beams 1 are front suspension brackets 2 for mounting an engine, and rigidly connected between the pair of main frame beams 1 is a front suspension support beam 3 for strengthening the main frame beams 1. In this embodiment, the vehicle frame is specifically a front-wheel drive vehicle frame with a front-mounted engine, and is mainly applied to passenger vehicles with a front-mounted engine such as school buses and highway buses, so it needs to have sufficient NVH performance to ensure the riding experience of passengers and drivers. Therefore, the front suspension bracket 2 is arranged on the front side of the front suspension support beam 3 according to the structural characteristics of the front-wheel drive vehicle, that is, on the side corresponding to the normal driving direction of the vehicle.

[0041] The front suspension bracket 2 is provided with a rigid connection structure for rigidly connecting with the main frame beam 1. The rigid connection structure extends along the main frame beam 1 and is rigidly connected to the main frame beam 1 by means of screwing, riveting, welding, etc. The rigid connection structure has a support beam connection part 27, so that the front suspension support beam 3, the front suspension bracket 2 and the main frame beam 1 can be simultaneously rigidly connected through the support beam connection part 27.

[0042] The key to this embodiment is that the aforementioned frame main beam 1 is the first channel steel 4. This can endow the frame main beam 1 with sufficient structural strength while reducing the manufacturing cost of the frame main beam 1. Refer to Figure 4 As shown, the rigid connection structure includes a lower connecting plate 5 for rigidly connecting with the lower flange of the first channel steel 4, and the aforementioned beam connecting portion 27 is the part of the lower connecting plate 5 corresponding to the front suspension beam 3. The front suspension beam 3 has a fixing plate 15. During installation, the lower connecting plate 5, the fixing plate 15 and the lower flange of the first channel steel 4 are closely stacked and rigidly connected by fasteners or welding. Specifically, the lower connecting plate 5 can be located at the top layer, the lower flange of the first channel steel 4 is located at the middle layer, and the fixing plate 15 is located at the bottom layer, and the three are fixedly connected by bolts or rivets. In other embodiments, other stacking methods can also be adopted, such as making the lower flange of the first channel steel 4 located at the top layer, the lower connecting plate 5 located at the middle layer, and the fixing plate 15 located at the bottom layer. The above settings can rigidly connect the lower connecting plate 5, the lower flange of the first channel steel 4 and the fixing plate 15 through the same set of fasteners to simultaneously achieve the rigid connection between the front suspension beam 3 and the front suspension bracket 2, between the front suspension beam 3 and the frame main beam 1, and between the front suspension bracket 2 and the frame main beam 1. At the same time, since the connection nodes between the front suspension beam 3 and the front suspension bracket 2, between the front suspension beam 3 and the frame main beam 1, and between the front suspension bracket 2 and the frame main beam 1 are integrated together, the number of connection nodes on the vehicle frame is reduced, so it is easier for the vehicle frame to ensure its own stiffness and vibration isolation performance. In other embodiments, the front suspension beam 3 and the frame main beam 1 and the front suspension bracket 2 and the frame main beam 1 can also be rigidly connected separately. A separate connecting portion is provided on the front suspension beam 3 for separately fixedly connecting with the beam connecting portion 27 of the front suspension bracket 2.

[0043] Refer to Figure 4As shown, the aforementioned rigid connection structure further includes an upper connecting plate 6 for rigidly connecting with the upper flange of the first channel steel 4. Such a setting further strengthens the connection stiffness between the front mount bracket 2 and the vehicle frame main beam 1, thereby improving the stiffness of the entire vehicle frame. Based on the above structure, the front mount bracket 2 can include a second channel steel 7. The second channel steel 7 is installed in a butted manner within the first channel steel 4. The lower flange of the second channel steel 7 forms the aforementioned lower connecting plate 5, and the upper flange of the second channel steel 7 forms the aforementioned upper connecting plate 6. The lower connecting plate 5 is rigidly connected to the lower flange of the first channel steel 4 and the upper connecting plate 6 and the upper flange of the first channel steel 4 through fasteners or welding. When using fasteners for connection, two connection points can be set on the upper connecting plate 6, and four connection points can be set on the lower connecting plate 5. Two of the four connection points on the lower connecting plate 5 are used for rigid connection with the vehicle frame main beam 1, and the other two are set on the beam connection part 27 for simultaneous connection with the front mount beam 3 and the vehicle frame main beam 1. This can use the upper and lower flanges of the first channel steel 4 to stop and limit the second channel steel 7, while increasing the stiffness at the connection between the two and reducing the load at the fasteners or welds connecting the first channel steel 4 and the second channel steel 7. A first installation structure 8 for installing the engine and a first avoidance notch 11 for leaving an operation space for installing the front mount bracket 2 are provided on the web of the second channel steel 7. In this embodiment, the first installation structure 8 is a first inclined plate 9 that extends downward and obliquely. A first reinforcing rib 10 is connected between the first inclined plate 9 and the web of the second channel steel 7. Long holes for installing the engine are provided on the inclined plate.

[0044] for reference Figure 4As shown, the aforementioned front suspension support beam 3 includes a transverse arm 12, an inclined arm 13, and a vertical arm 14. The inclined arms 13 are arranged in pairs and are respectively rigidly connected to both ends of the transverse arm 12. The vertical arms 14 are arranged in pairs and are respectively rigidly connected to the upper ends of the inclined arms 13, so that the front suspension support beam 3 forms an upward-opening arched structure. This can enable the front suspension support beam 3 to have stronger structural stiffness to strengthen the rigid reinforcement effect of the front suspension support beam 3 on the main frame beam 1 of the vehicle frame, and further enable the vehicle frame to have stronger structural stiffness. A fixing plate 15 is arranged at the upper end of the vertical arm 14 for rigid connection with the vehicle frame and the front suspension bracket 2. In this embodiment, the fixing plate 15 is specifically an L-shaped plate, including a vertical wall extending downward and a horizontal wall extending horizontally. The vertical wall is rigidly connected to the vertical arm 14 by welding or fastener connection, and the horizontal wall is used for rigid connection with the front suspension bracket 2 and the main frame beam 1 of the vehicle frame by fasteners or welding. When using fastener connection, two connection points can be set on the horizontal wall. The transverse arm 12, the inclined arm 13, and the vertical arm 14 are preferably made of profiles such as rectangular steel pipes and are rigidly connected to each other by welding. To further ensure the structural stiffness of the front suspension support beam 3, a reinforcing arm 28 can be rigidly connected between the paired inclined arms 13. The reinforcing arm 28 is preferably also made of a profile and is rigidly connected to the inclined arm 13 at a position close to the transverse arm 12 to leave enough space to avoid the installation of the engine.

[0045] In this embodiment, rear suspension brackets 16 for installing a transmission are rigidly connected to both of the paired main frame beams 1 of the vehicle frame. The rear suspension brackets 16 can refer to Figure 5 、 Figure 6As shown, it includes an upper fixing part 17 for rigidly connecting with the upper flange of the first channel steel 4 and a lower fixing part 18 for rigidly connecting with the lower flange of the first channel steel 4. Such a setting improves the connection stiffness between the vehicle frame main beam 1 and the rear suspension bracket 16, and thus improves the structural stiffness of the entire vehicle frame. Preferably, the upper fixing part 17 and the upper flange of the first channel steel 4, and the lower fixing part 18 and the lower flange of the first channel steel 4 are rigidly connected by fasteners or by welding. When using fastener connection, three connection points can be respectively arranged on the upper fixing part 17 and the lower fixing part 18 for connecting with the first channel steel 4. On this basis, the rear suspension bracket 16 can include a third channel steel 19. The third channel steel 19 is installed in the first channel steel 4 in a butt-jointed manner. The upper flange of the third channel steel 19 constitutes the upper fixing part 17, and the lower flange of the third channel steel 19 constitutes the lower fixing part 18. In this way, the upper and lower flanges of the first channel steel 4 can be used to stop and limit the third channel steel 19, reducing the load on the fasteners or welds connecting the first channel steel 4 and the third channel steel 19 while improving the stiffness at the connection between the two. A second installation structure 20 for installing the transmission and a second avoidance notch 21 for leaving an operation space for installing the rear suspension bracket 16 are arranged on the web of the third channel steel 19. In this embodiment, the second installation structure 20 is a second inclined plate 22 that extends downward and obliquely. A second reinforcing rib 23 is connected between the second inclined plate 22 and the web of the third channel steel 19. Long holes for installing the engine are opened on the inclined plate. A rear suspension cross beam 24 can also be arranged at the rear side of the rear suspension bracket 16 to rigidly reinforce the vehicle frame through the rear suspension cross beam 24. The specific structure of the rear suspension cross beam 24 is existing, and both ends of it are simultaneously connected to the upper surface, web surface, and lower surface of the first channel steel 4 by fasteners or by welding.

[0046] The vehicle frame further includes a front suspension bracket 25 for rigidly connecting the vehicle frame main beam 1 and the vehicle floor frame 26. The front suspension bracket 25 can specifically be a stamping integral part or composed of multiple steel plates welded together. Reference can be made to Figure 7 , Figure 8 As shown, the front suspension brackets 25 are arranged in pairs corresponding to the vehicle frame main beam 1. Their lower ends are rigidly connected to the vehicle frame main beam 1, and their upper ends are rigidly connected to the vehicle floor frame 26 to rigidly connect the vehicle floor frame 26 and the vehicle frame. In this embodiment, the lower ends of the front suspension brackets 25 can be rigidly connected to the vehicle frame main beam 1 by bolts or rivets, and two connection points are arranged. The upper ends of the front suspension brackets 25 are also rigidly connected to the vehicle floor frame 26 by bolts or rivets, and one connection point is arranged. In this way, the influence of engine vibration on the vehicle floor frame 26 can be reduced, the NVH performance of the whole vehicle can be improved, and the riding comfort of passengers and drivers in the carriage can be effectively guaranteed.

[0047] Embodiment of the vehicle of the present utility model:

[0048] A vehicle includes a vehicle frame and vehicle components mounted on the vehicle frame. The structure and characteristics of the vehicle frame are consistent with those of the vehicle frame described in the design concept and embodiments of the vehicle frame of the present utility model. The vehicle components include conventional vehicle components such as an engine, a transmission, and a suspension, which are specific existing products, so they will not be elaborated here.

[0049] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. The patent protection scope of the present utility model is subject to the claims. Any equivalent structural changes made by using the content of the specification and drawings of the present utility model should, by the same token, be included in the protection scope of the present utility model.

Claims

1. A vehicle frame, characterized in that: The invention comprises a pair of frame main beams, each of which is rigidly connected to a front suspension bracket for mounting an engine, a front suspension joist for reinforcing the frame main beam is rigidly connected between the pair of frame main beams, a rigid connection structure for rigidly connecting to the frame main beam is arranged on the front suspension bracket, the rigid connection structure extends along the frame main beam and comprises a joist connecting portion, and the front suspension joist, the front suspension bracket and the frame main beam are rigidly connected at the same time via the joist connecting portion.

2. The vehicle frame according to claim 1, characterized in that: The frame main beam is a first channel steel; the rigid connection structure includes a lower connecting plate for rigidly connecting to a lower wing plate of the first channel steel, the joist connecting portion is a portion of the lower connecting plate corresponding to the front suspension joist, the front suspension joist includes a fixing plate, and the lower connecting plate, the fixing plate and the lower wing plate of the first channel steel are tightly stacked and rigidly connected.

3. The vehicle frame according to claim 2, characterized in that: The rigid connection structure also includes an upper connection plate for rigidly connecting to an upper wing plate of the first channel steel.

4. The vehicle frame according to claim 3, characterized in that: The front suspension bracket includes a second channel steel, which is installed in the first channel steel by snapping, and the lower wing plate of the second channel steel constitutes the lower connecting plate; the upper wing plate of the second channel steel constitutes the upper connecting plate; the belly plate of the second channel steel is provided with a first mounting structure for mounting the engine and a first avoidance gap for leaving an operating space for mounting the front suspension bracket.

5. The vehicle frame according to claim 2, characterized in that: The front suspension support beam includes a transverse arm, an inclined arm and a vertical arm; the inclined arms are arranged in pairs and rigidly connected to the two ends of the transverse arms, and the vertical arms are arranged in pairs and rigidly connected to the upper ends of the inclined arms, so that the front suspension support beam forms an arched structure with an opening facing upward; the fixing plate is arranged at the upper end of the vertical arm.

6. The vehicle frame according to claim 5, characterized in that: A reinforcing arm is rigidly connected between the inclined arms arranged in pairs.

7. The vehicle frame according to any one of claims 2 to 6, characterized in that: The paired frame main beams are rigidly connected with rear suspension brackets for mounting the gearbox, and the rear suspension brackets include an upper fixing portion rigidly connected to the upper wing plate of the first channel steel and a lower fixing portion rigidly connected to the lower wing plate of the first channel steel.

8. The vehicle frame according to claim 7, characterized in that: The rear suspension bracket includes a third channel steel, which is installed in the first channel steel by snap-fitting. The upper wing plate of the third channel steel constitutes the upper fixing part, and the lower wing plate of the third channel steel constitutes the lower fixing part. The web of the third channel steel is provided with a second mounting structure for mounting a gearbox and a second avoidance gap for leaving an operating space for mounting the rear suspension bracket.

9. The vehicle frame according to any one of claims 2 to 6, characterized in that: The vehicle frame also includes a front suspension bracket for rigidly connecting the frame main beam and the vehicle floor frame, and the front suspension bracket is arranged in pairs corresponding to the frame main beam.

10. A vehicle comprising a vehicle frame and a vehicle component mounted on the vehicle frame, characterized in that: The vehicle frame is the vehicle frame according to any one of claims 1 to 9.

Images