Vehicle frame structure and vehicle

Abstract

The utility model provides a frame structure and a vehicle, the frame structure comprises a front frame, a middle frame and a rear frame, the front frame and the rear frame are respectively arranged on two sides of the middle frame, and the front frame, the middle frame and the rear frame are integrally cast; or the front frame and the middle frame are integrally cast; or the middle frame and the rear frame are integrally cast; or the front frame, the middle frame and the rear frame are respectively casted, the utility model relates to the technical field of frame structures, the front frame body, the middle frame body and the rear frame body are integrally casted and integrally formed, so that the phenomenon that the whole frame is deformed due to a large amount of welding and heating is prevented, the service life of the frame is prolonged, and the service life of the frame is prolonged. Meanwhile, the assembly steps of the chassis frame are reduced, the production efficiency is improved, the use of connecting pieces can be reduced through integrated casting, and the part cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of frame structures, in particular to a frame structure and a vehicle. Background Art

[0002] The frame is an important part of an automobile. In the design of a heavy-duty truck, the special usage requirements of users must be considered. To ensure the reliability and safety of the heavy-duty truck under various harsh usage conditions, higher design precision requirements are imposed on the strength, stiffness and reliability of the frame.

[0003] Among them, the cross-sectional shape of the longitudinal beam of the common chassis frame of a heavy-duty truck is "C" shaped, which is formed by stamping a special hot-rolled steel plate for the frame and then bolted. The torsional resistance of this cross-section is poor. Therefore, transverse beams are added between the two longitudinal beams of the frame to reduce the torsional deformation of the two longitudinal beams. In the traditional frame, each cross beam needs to be bolted, riveted or welded to connect multiple parts to form an integral frame. Due to a large amount of welding and heating, it is difficult to control the deformation of the frame. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a frame structure, which can solve the problem of frame deformation caused by a large amount of welding and heating when connecting multiple parts.

[0005] The utility model provides a frame structure, including:

[0006] A front frame, an intermediate frame and a rear frame;

[0007] The front frame and the rear frame are respectively arranged on both sides of the intermediate frame, and the front frame, the intermediate frame and the rear frame are integrally cast; or,

[0008] The front frame and the intermediate frame are integrally cast; or,

[0009] The intermediate frame and the rear frame are integrally cast; or,

[0010] The front frame, the intermediate frame and the rear frame are respectively cast and connected.

[0011] In some feasible embodiments, the front frame includes: two front frame longitudinal beams, a front frame cross beam, a first reinforcing rib, a second reinforcing rib and a front connecting plate;

[0012] The two front frame longitudinal beams are symmetrically distributed along the front connecting plate. The front frame cross beam is connected to one end of the front frame longitudinal beam away from the front connecting plate. The first reinforcing rib is arranged at the connection of the front frame longitudinal beam and the front frame cross beam, and the second reinforcing rib is arranged at the connection of the front frame longitudinal beam and the front connecting plate.

[0013] In some feasible embodiments, longitudinal beam weight reduction holes are formed on the front frame longitudinal beams, cross beam weight reduction holes are formed on the front frame cross beam, and third mounting holes are provided on the front connecting plate.

[0014] In some feasible embodiments, the intermediate frame includes: a partition plate and a frame;

[0015] The partition plate divides the frame into two regions. Frame weight reduction holes are formed in the frame. A first support rod is fixedly connected to the top end of the frame, and the first support rod is used to support the outer contour of the frame. A second support rod is fixedly connected to the bottom end of the frame, and the second support rod is used to support the external battery module in the frame.

[0016] In some feasible embodiments, first mounting holes are provided on the outer contour of the frame, and the first mounting holes are used to connect components at various positions of the chassis. Second mounting holes are provided on the partition plate, and the second mounting holes are used to connect the external battery module in the frame. Partition plate weight reduction holes are provided on the partition plate.

[0017] In some feasible embodiments, the rear frame includes: two rear frame longitudinal beams, a rear frame cross beam, a balance shaft, a bracket, a mudguard and a rear connecting plate;

[0018] The two rear frame longitudinal beams are symmetrically distributed along the rear connecting plate. The rear frame cross beam is connected to one end of the rear frame longitudinal beam away from the rear connecting plate. The balance shaft is arranged between the two rear frame longitudinal beams. The bracket is connected to the bottom end of the rear frame longitudinal beam, and the mudguard is installed on the outer side of the rear frame longitudinal beam.

[0019] In some feasible embodiments, fourth mounting holes are provided on the rear connecting plate, and a seventh reinforcing rib is connected between the rear frame longitudinal beam and the rear connecting plate.

[0020] In some feasible embodiments, a fourth reinforcing rib is arranged between the rear frame longitudinal beam and the intermediate frame. A fifth reinforcing rib is arranged between the rear frame cross beam and the rear frame longitudinal beam. Mounting bosses are provided on both sides of the balance shaft near the rear frame longitudinal beam, and a sixth reinforcing rib is arranged at the connection of the balance shaft and the rear frame longitudinal beam.

[0021] In some feasible embodiments, an arc-shaped reinforcing rib is connected between the bracket and the longitudinal beam of the rear frame, and a connecting boss is provided on the lower side of the bracket.

[0022] In a second aspect, the present invention provides a vehicle, and the vehicle includes the above-mentioned frame structure.

[0023] The present invention provides a frame structure by way of improvement as follows:

[0024] The front frame, the intermediate frame, and the rear frame body are integrally cast and formed as a whole. By adopting integral casting, it is possible to prevent the overall frame from being deformed due to a large amount of welding and heating, and at the same time reduce the assembly steps of the chassis frame, improve production efficiency, and the integral casting can reduce the use of connecting parts and lower the part cost. Description of the Drawings

[0025] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0026] Figure 1 It is a schematic structural diagram of a frame structure in the present invention;

[0027] Figure 2 It is Figure 1 a schematic structural diagram of the front frame, the intermediate frame, and the rear frame in

[0028] Figure 3 It is Figure 1 a schematic three-dimensional structural diagram of a three-section screw-connected frame in

[0029] Figure 4 It is Figure 3 a schematic three-dimensional structural diagram of the front frame in

[0030] Figure 5 It is Figure 3 a schematic three-dimensional structural diagram of the intermediate frame in

[0031] Figure 6 It is Figure 3 a schematic three-dimensional structural diagram of the rear frame in

[0032] Description of the Reference Numerals:

[0033] 1 - Front frame, 11 - Front frame longitudinal beam, 111 - Front longitudinal beam weight reduction hole, 12 - Front frame cross beam, 121 - Front cross beam weight reduction hole, 13 - First reinforcing rib, 14 - Second reinforcing rib, 15 - Front connection plate, 151 - Third mounting hole, 2 - Intermediate frame, 21 - Partition plate, 211 - First mounting hole, 212 - Second mounting hole, 213 - Partition plate weight reduction hole, 22 - Frame weight reduction hole, 221 - Third reinforcing rib, 23 - First support rod, 24 - Second support rod, 25 - Frame border, 3 - Rear frame, 31 - Rear frame longitudinal beam, 311 - Fourth reinforcing rib, 32 - Rear frame cross beam, 321 - Fifth reinforcing rib, 33 - Balance shaft, 331 - Mounting boss, 332 - Sixth reinforcing rib, 34 - Bracket, 341 - Arc reinforcing rib, 342 - Connection boss, 35 - Mudguard, 36 - Rear connection plate, 361 - Fourth mounting hole, 362 - Seventh reinforcing rib. Detailed implementation mode

[0034] The technical solutions of the present utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0035] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0036] In the description of the present utility model, it should be understood that the terms "first" - "second" are only for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" - "second" may explicitly or implicitly include one or more of the said features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless otherwise specifically defined. In addition, the terms "mounted" - "connected" - "connected to" should be understood in a broad sense. For example, it may be a connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0037] In the first aspect of the embodiments of the present application, a frame structure is provided, as Figure 1 and Figure 2 shown, including a front frame 1, an intermediate frame 2, and a rear frame 3. The front frame 1 and the rear frame 3 are respectively arranged on both sides of the intermediate frame 2, and the front frame 1, the intermediate frame 2, and the rear frame 3 are integrally cast;

[0038] Thus, the front frame 1, the intermediate frame 2, and the rear frame 3 are integrally formed by integral casting. By using the integral casting structure, the assembly steps of the chassis frame are effectively reduced, the production efficiency of the frame is improved, and the use of connecting parts can be reduced by integral casting, the part cost is reduced, and the deformation of the frame caused by welding and heating can be prevented;

[0039] Exemplarily, the front frame 1 and the intermediate frame 2 are integrally cast; based on this, the rear frame 3 and the intermediate frame 2 are connected by bolts, and other fixed connection methods such as welding and riveting can also be used between the rear frame 3 and the intermediate frame 2, which are not specifically limited herein;

[0040] Exemplarily, the intermediate frame 2 and the rear frame 3 are integrally cast; based on this, the front frame 1 and the intermediate frame 2 are connected by bolts to form an integral structure, and the connection method of the bolts can also be replaced by other connection structures, which are not specifically limited herein;

[0041] Exemplarily, the front frame 1, the intermediate frame 2, and the rear frame 3 are respectively cast and connected; the front frame 1, the intermediate frame 2, and the rear frame 3 are connected by bolts, and other fixing methods can also be used between the front frame 1, the intermediate frame 2, and the rear frame 3, as long as the fixed connection between the front frame 1, the intermediate frame 2, and the rear frame 3 is satisfied, which is not specifically limited herein.

[0042] In some embodiments, as Figure 3 andFigure 4 As shown in the figure, the front frame 1 includes: two front frame longitudinal beams 11, a front frame cross beam 12, a first reinforcing rib 13, a second reinforcing rib 14, and a front connection plate 15. The two front frame longitudinal beams 11 are symmetrically distributed along the front connection plate 15. The front frame cross beam 12 is connected to one end of the front frame longitudinal beam 11 away from the front connection plate 15. The first reinforcing rib 13 is arranged at the connection of the front frame longitudinal beam 11 and the front frame cross beam 12. The second reinforcing rib 14 is arranged at the connection of the front frame longitudinal beam 11 and the front connection plate 15.

[0043] It should be particularly noted that the front frame longitudinal beams 11 on both sides of the front frame cross beam 12 have a "C" - shaped cross - section. The front frame cross beam 12 and the front frame longitudinal beams 11 on both sides are integrally formed and cast into a U - shaped structure. There are four first reinforcing ribs 13, and the first reinforcing ribs 13 are used to enhance the connection strength between the front frame longitudinal beam 11 and the front frame cross beam 12. The front connection plate 15 is rectangular. The second reinforcing ribs 14 are located at the right - angled corners where the front frame longitudinal beam 11 is connected to the front connection plate 15 on both sides of the upper and lower positions of the front frame longitudinal beam 11. The second reinforcing ribs 14 are used to fix the front frame longitudinal beam 11 and the front connection plate 15 so that their positions can be better supported and the anti - deformation ability can be improved.

[0044] In some embodiments, as Figure 4 shown, longitudinal beam weight - reducing holes 111 are provided on the front frame longitudinal beam 11, cross - beam weight - reducing holes 121 are provided on the front frame cross beam 12, and third mounting holes 151 are provided on the front connection plate 15.

[0045] The provisions of the longitudinal beam weight - reducing holes 111 and the cross - beam weight - reducing holes 121 are used to reduce the overall structure weight. The distribution positions of the longitudinal beam weight - reducing holes 111 on the front frame longitudinal beam 11 are not limited. The distribution positions of the cross - beam weight - reducing holes 121 on the front frame cross beam 12 are not limited. The shapes of the longitudinal beam weight - reducing holes 111 and the cross - beam weight - reducing holes 121 are not limited. The third mounting holes 151 are used to pass bolts to achieve the purpose of connecting the front frame 1 and the intermediate frame 2. The front frame 1 and the intermediate frame 2 can also be connected by other connection methods.

[0046] In some embodiments, as Figure 3 and Figure 5 shown, the intermediate frame 2 includes: a partition plate 21, a frame 25. The partition plate 21 divides the frame 25 into two regions. Frame weight - reducing holes 22 are provided in the frame 25. A first support rod 23 is fixedly connected to the top of the frame 25, and the first support rod 23 is used to support the outer contour of the frame 25. A second support rod 24 is fixedly connected to the bottom of the frame 25, and the second support rod 24 is used to support the external battery module in the frame 25.

[0047] Further, the frame 25 can be a rectangular frame structure. The partition plate 21 is located in the middle of the frame 25. The partition plate 21 divides the frame 25 into two regions and enhances the ability of the frame 25 to resist deformation. The frame weight reduction holes 22 are evenly distributed on the left and right plane surfaces of the frame 25. The frame weight reduction holes 22 can also be opened at other positions on the frame 25. The frame weight reduction holes 22 can be circular or elliptical. There are three first support rods 23 to support the outer contour of the frame 25 and resist deformation. The connections of the first support rods 23 with the contour of the frame 25 and the partition plate 21 are all connected and transitioned with rounded corners. There are two second support rods 24 to support components such as external battery modules;

[0048] It should be noted that: The number of the first support rods 23 and the second support rods 24 used is not specifically limited. On the premise of meeting the use strength of the frame 25, the first support rods 23 and the second support rods 24 do not need to be installed.

[0049] In some embodiments, as Figure 5 shown, the outer contour of the frame 25 is provided with first mounting holes 211, and the first mounting holes 211 are used to connect components at various positions of the chassis. The partition plate 21 is provided with second mounting holes 212, and the second mounting holes 212 are used to connect the external battery module in the frame 25. The partition plate 21 is provided with partition plate weight reduction holes 213;

[0050] Further, the partition plate weight reduction holes 213 are used to reduce the weight of the partition plate 21. The number, size and shape of the partition plate weight reduction holes 213 are not specifically limited. The frame 25 is connected to the vehicle chassis through the first mounting holes 211, and the external battery module is connected to the partition plate 21 through the second mounting holes 212;

[0051] Exemplarily: The frame weight reduction hole 22 is provided with a third reinforcing rib 221;

[0052] The frame weight reduction holes 22 are opened on the left and right plane surfaces of the frame 25. The frame weight reduction holes 22 can be circular, elliptical or rectangular, etc. The specific shape of the frame weight reduction holes 22 is processed according to the use requirements. The third reinforcing rib 221 is arranged in the frame weight reduction hole 22. The third reinforcing rib 221 connects the diagonal connection positions of the square frame weight reduction hole 22. The third reinforcing rib 221 is used to enhance the anti-deformation ability of the frame weight reduction hole 22 and is transitionally connected with rounded corners;

[0053] It should be noted that: The number of the frame weight reduction holes 22 used is processed according to the configuration requirements. In specific cases, it is not necessary to process the frame weight reduction holes 22 and the third reinforcing ribs 221 on the outer wall of the frame 25.

[0054] In some embodiments, as Figure 3 and Figure 6As shown in the figure, the rear frame 3 includes: two rear frame longitudinal beams 31, a rear frame cross beam 32, a balance shaft 33, a bracket 34, a mudguard 35 and a rear connection plate 36. The two rear frame longitudinal beams 31 are symmetrically distributed along the rear connection plate 36. The rear frame cross beam 32 is connected to one end of the rear frame longitudinal beam 31 away from the rear connection plate 36. The balance shaft 33 is arranged between the two rear frame longitudinal beams 31. The bracket 34 is connected to the bottom end of the rear frame longitudinal beam 31. The mudguard 35 is installed on the outer side of the rear frame longitudinal beam 31;

[0055] It should be noted that the connection between the balance shaft 33 and the two rear frame longitudinal beams 31 is transitionally connected with a fillet. One bracket 34 is provided on the lower side of each of the two rear frame longitudinal beams 31. The connection between the bracket 34 and the rear frame longitudinal beam 31 is transitionally connected with a fillet. The bracket 34 is in a "Y" - shaped structure. The mudguard 35 is a mudguard elbow pipe, which is vertically connected to the two rear frame longitudinal beams 31. The connection position is transitionally connected with a fillet. It should be noted that: the number and arrangement of the mudguards 35 are specifically processed according to the usage requirements. Under special usage requirements, the mudguards 35 can be not provided. The rear connection plate 36 is arranged at one end of the two rear frame longitudinal beams 31 close to the connection frame 25. The rear connection plate 36 is rectangular.

[0056] In some embodiments, as Figure 6 shown, the rear connection plate 36 is provided with a fourth mounting hole 361, and a seventh reinforcing rib 362 is connected between the rear frame longitudinal beam 31 and the rear connection plate 36;

[0057] The fourth mounting hole 361 is used to pass through bolts to connect the rear frame 3 to the intermediate frame 2. The seventh reinforcing rib 362 is arranged at the right - angled corner where the rear frame longitudinal beam 31 is connected to the rear connection plate 36, and on both sides of the upper and lower positions of the rear frame longitudinal beam 31. The seventh reinforcing rib 362 is used to fix the rear frame longitudinal beam 31 and the rear connection plate 36, so that their positions can be better supported and the anti - deformation ability is improved.

[0058] In some embodiments, as Figure 6 shown, a fourth reinforcing rib 311 is arranged between the rear frame longitudinal beam 31 and the intermediate frame 2. A fifth reinforcing rib 321 is arranged between the rear frame cross beam 32 and the rear frame longitudinal beam 31. Mounting bosses 331 are arranged at positions close to the rear frame longitudinal beam 31 on both sides of the balance shaft 33. A sixth reinforcing rib 332 is arranged at the connection between the balance shaft 33 and the rear frame longitudinal beam 31;

[0059] The mounting bosses 331 are used to connect the V - type thrust rod. The sixth reinforcing rib 332 makes the balance shaft 33 more stable. The fifth reinforcing rib 321 makes the structure between the rear frame longitudinal beam 31 and the rear frame cross beam 32 more stable. The fourth reinforcing rib 311 makes the connection between the rear frame 3 and the intermediate frame 2 more stable and reliable.

[0060] In some embodiments, asFigure 2 As shown, an arc-shaped reinforcing rib 341 is connected between the bracket 34 and the longitudinal beam 31 of the rear frame, and a connecting boss 342 is provided on the lower side of the bracket 34;

[0061] The connection between the bracket 34 and the longitudinal beam 31 of the rear frame is connected and transitioned by a fillet. The arc-shaped reinforcing rib 341 is located on both sides of the connection position between the bracket 34 and the longitudinal beam 31 of the rear frame. Based on this, the arc-shaped reinforcing rib 341 is used to enhance the strength of the brackets 34 on both sides. When the connection strength between the bracket 34 and the longitudinal beam 31 of the rear frame is sufficient, the arc-shaped reinforcing rib 341 can be selectively used according to the usage requirements. It should be noted that: the connecting boss 342 is used to connect the lower thrust rod bracket.

[0062] In the second aspect of the embodiment of the present application, a vehicle is proposed, and the vehicle includes the frame structure of the above embodiment.

[0063] Exemplarily, the above vehicle can be a new energy vehicle. Specifically, the above new energy vehicle can include: a chassis unit composed of an integral frame and at least one battery unit.

[0064] In some feasible implementation manners, the above frame mechanism can be provided on the chassis of a fuel vehicle; the above frame mechanism can be provided on the chassis of a new energy vehicle, and no specific limitation is made here.

[0065] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A frame structure, characterized in that, Including: A front frame (1), an intermediate frame (2), and a rear frame (3); The front frame (1) and the rear frame (3) are respectively arranged on both sides of the intermediate frame (2), and the front frame (1), the intermediate frame (2), and the rear frame (3) are integrally cast; or, The front frame (1) and the intermediate frame (2) are integrally cast; or, The intermediate frame (2) and the rear frame (3) are integrally cast; or, The front frame (1), the intermediate frame (2), and the rear frame (3) are respectively cast and connected.

2. The frame structure according to claim 1, characterized in that, The front frame (1) includes: two front frame longitudinal beams (11), a front frame cross beam (12), a first reinforcing rib (13), a second reinforcing rib (14), and a front connection plate (15); The two front frame longitudinal beams (11) are symmetrically distributed along the front connection plate (15), the front frame cross beam (12) is connected to one end of the front frame longitudinal beam (11) away from the front connection plate (15), the first reinforcing rib (13) is arranged at the connection of the front frame longitudinal beam (11) and the front frame cross beam (12), and the second reinforcing rib (14) is arranged at the connection of the front frame longitudinal beam (11) and the front connection plate (15).

3. The frame structure according to claim 2, characterized in that, Longitudinal beam weight reduction holes (111) are formed in the front frame longitudinal beam (11), cross beam weight reduction holes (121) are formed in the front frame cross beam (12), and a third mounting hole (151) is provided on the front connection plate (15).

4. The frame structure according to claim 1, characterized in that, The intermediate frame (2) includes: a partition plate (21), a frame (25); The partition plate (21) divides the frame (25) into two regions, frame weight reduction holes (22) are formed in the frame (25), a first support rod (23) is fixedly connected to the top end of the frame (25), the first support rod (23) is used to support the outer contour of the frame (25), a second support rod (24) is fixedly connected to the bottom end of the frame (25), and the second support rod (24) is used to support the external battery module in the frame (25).

5. The frame structure according to claim 4, wherein, A first mounting hole (211) is provided on the outer contour of the frame (25), and the first mounting hole (211) is used to connect components at various positions of the chassis. A second mounting hole (212) is provided on the partition plate (21), and the second mounting hole (212) is used to connect the external battery module in the frame (25). A partition plate weight reduction hole (213) is provided on the partition plate (21).

6. The frame structure according to claim 1, wherein, The rear frame (3) includes: two rear frame longitudinal beams (31), a rear frame cross beam (32), a balance shaft (33), a bracket (34), a mudguard (35), and a rear connection plate (36); The two rear frame longitudinal beams (31) are symmetrically distributed along the rear connection plate (36). One end of the rear frame cross beam (32) away from the rear connection plate (36) is connected to the rear frame longitudinal beam (31). The balance shaft (33) is arranged between the two rear frame longitudinal beams (31). The bracket (34) is connected to the bottom end of the rear frame longitudinal beam (31). The mudguard (35) is installed on the outer side of the rear frame longitudinal beam (31).

7. The frame structure according to claim 6, characterized in that, A fourth mounting hole (361) is provided on the rear connection plate (36). A seventh reinforcing rib (362) is connected between the rear frame longitudinal beam (31) and the rear connection plate (36).

8. The frame structure according to claim 6, characterized in that A fourth reinforcing rib (311) is arranged between the rear frame longitudinal beam (31) and the intermediate frame (2). A fifth reinforcing rib (321) is provided between the rear frame cross beam (32) and the rear frame longitudinal beam (31). Mounting bosses (331) are arranged on both sides of the balance shaft (33) near the rear frame longitudinal beam (31). A sixth reinforcing rib (332) is arranged at the connection between the balance shaft (33) and the rear frame longitudinal beam (31).

9. The frame structure according to claim 6, wherein, An arc reinforcing rib (341) is connected between the bracket (34) and the rear frame longitudinal beam (31). A connection boss (342) is provided on the lower side of the bracket (34).

10. A vehicle, characterized in that, The vehicle includes a frame structure as described in any one of claims 1 to 9.

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