Frame, chassis and vehicle

Abstract

The utility model discloses a frame, a chassis and a vehicle. The frame comprises a front frame and a rear frame. The rear frame is connected with the front frame, and the rear frame is an integrally formed piece. The rear frame is connected with the front frame, and the rear frame adopts an integral forming machining process, so that the use of a welding process can be reduced, the structural strength of the rear frame can be improved, the rear frame has a good force bearing effect, the quality of the rear frame is prevented from being reduced by a welding seam formed by welding, the technological process of the rear frame is simplified, and the production cost is reduced. The whole machining efficiency of the frame is improved, the service life of the frame is prolonged, meanwhile, the frame can be compact in structure, the occupied space area of the frame is reduced, the production cost is reduced, and the rear frame has good sealing performance.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle technical field especially is related to a frame, chassis and vehicle. BACKGROUND

[0002] In prior art, the frame is usually composed of a welded front frame and a welded rear frame, the sealing property of the frame is low, the structural strength of the frame is low, and the welded rear frame is light in weight. SUMMARY

[0003] The utility model discloses at least one of the technical problems in prior art is solved. To this end, one purpose of the utility model is to provide a frame, which can improve the sealing property and structural strength of the frame.

[0004] A second purpose of the utility model is to provide a chassis, which comprises the frame according to any one of the first aspect embodiments.

[0005] A third purpose of the utility model is to provide a vehicle, which comprises the frame according to any one of the first aspect embodiments or the chassis according to the second aspect embodiment.

[0006] According to the frame of the first aspect embodiment of the utility model, the frame comprises a front frame and a rear frame, the rear frame is connected with the front frame, and the rear frame is an integral forming piece.

[0007] According to the frame of the utility model embodiment, by connecting the rear frame and the front frame and adopting the integral forming processing technology for the rear frame, the use of the welding process can be reduced, the structural strength of the rear frame can be improved, the rear frame has good load-bearing effect, the weld formed by welding does not reduce the quality of the rear frame, the process flow of the rear frame is simplified, the overall processing efficiency of the frame is improved, the service life of the frame is prolonged, the frame structure is compact, the space area occupied by the frame is reduced, the production cost is reduced, and the rear frame has good sealing property.

[0008] In some embodiments, the rear frame is a cast piece.

[0009] In some embodiments, the front frame and the rear frame are connected along the front-rear direction of the frame, and the side wall of the rear frame along the left-right direction of the frame is flush with the side wall of the front frame along the left-right direction of the frame.

[0010] In some embodiments, the front frame comprises a body portion and an end plate, the end plate is arranged at one end of the body portion adjacent to the rear frame, a first mounting hole is formed in the end plate, and a first fastener is adapted to pass through the first mounting hole to connect the end plate and the rear frame.

[0011] In some embodiments, the frame further comprises an extension plate disposed adjacent to one end of the rear frame, the extension plate being connected to the body portion, the extension plate extending towards the rear frame, the extension plate being connected to the rear frame.

[0012] In some embodiments, the extension plate is formed with a second mounting hole, a second fastener being adapted to pass through the second mounting hole and connect to the rear frame.

[0013] In some embodiments, the front frame is formed with a mounting groove, the mounting groove being formed adjacent to one end of the rear frame, the extension plate and the end plate defining the mounting groove, the rear frame being fitted into the mounting groove.

[0014] In some embodiments, the rear frame comprises a first connecting portion connected to the extension plate, and a second connecting portion connected to the first connecting portion adjacent to one end of the front frame, the second connecting portion being adapted to extend towards the ground in the up-down direction of the frame.

[0015] In some embodiments, the first connecting portion and the second connecting portion are formed with at least one accommodating space on one side away from the front frame, the surface of the accommodating space being formed as an arc surface.

[0016] In some embodiments, the accommodating space is a plurality of accommodating spaces, the plurality of accommodating spaces being spaced apart, the rear frame being formed with at least one passage between two adjacent accommodating spaces, the passage being adapted to pass through an oil pipe.

[0017] In some embodiments, the rear frame further comprises a steering axle mounting assembly, the steering axle mounting assembly comprising a first protruding portion formed with a groove, and a buffer disposed in the groove, the first protruding portion being adapted to mount a steering axle, the buffer being abutted against the steering axle.

[0018] In some embodiments, the first protruding portion is a plurality of first protruding portions, the plurality of first protruding portions being spaced apart, the plurality of first protruding portions being adapted to connect to two ends of the steering axle, the steering axle mounting assembly further comprising a second protruding portion disposed between two adjacent first protruding portions, the second protruding portion being adapted to abut against the steering axle.

[0019] In some embodiments, the first protruding portion and the second protruding portion are integrally formed with the rear frame.

[0020] In some embodiments, the rear frame is a cast iron or cast steel piece.

[0021] The chassis according to the second aspect of the present invention includes the frame described in any one of the first aspect embodiments.

[0022] The vehicle according to a third aspect embodiment of the present invention includes the frame described in any one of the first aspect embodiments, or the chassis described in the second aspect embodiment.

[0023] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0024] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0025] Figure 1 This is a schematic diagram of a vehicle frame according to a first aspect embodiment of the present invention;

[0026] Figure 2 This is an exploded view of the vehicle frame according to the first aspect of the present invention;

[0027] Figure 3 This is a schematic diagram of the rear frame according to the first aspect embodiment of the present utility model.

[0028] Figure label:

[0029] 100. Frame;

[0030] 10. Front frame; 11. Main body; 12. End plate; 121. First fastener;

[0031] 20. Rear frame; 21. First connecting part; 22. Second connecting part; 23. Accommodation space; 24. Passageway; 25. Steering axle mounting assembly; 251. First protrusion; 252. Buffer; 253. Second protrusion;

[0032] 30. Extension plate; 31. Second mounting hole; 32. Second fastener;

[0033] A. First direction; B. Second direction. Detailed Implementation

[0034] The embodiments of this utility model are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Figures 1-3 The vehicle frame 100 according to an embodiment of the present utility model is described. The vehicle frame 100 includes a front frame 10 and a rear frame 20.

[0035] Specifically, such as Figure 1As shown, the rear frame 20 is connected to the front frame 10, and the rear frame 20 is a one-piece molded part. The first direction A is the front-rear direction of the frame 100, and the second direction B is the left-right direction of the frame 100.

[0036] In this embodiment, the front frame 10 and the rear frame 20 are aligned along a first direction A and detachably connected to achieve the assembly and disassembly of the frame 100, realizing the modular design and installation of the front frame 10 and the rear frame 20. The rear frame 20 adopts an integral molding process, completing the required contours, holes, and surface treatments in a single mold. The front frame 10 is suitable for accommodating the basic components of the frame 100, and the rear frame 20 is suitable for sealing the frame 100. The mounting surfaces of the rear frame 20 and the front frame 10 are planar, and the side of the rear frame 20 that is mounted to the front frame 10 and the side away from the front frame 10 are not connected, improving the sealing performance of the rear frame 20. When the rear frame 20 is used to mount the steering axle, it can increase the sealing performance above the steering axle, preventing sand, mud, and other debris from splashing into the vehicle interior during driving.

[0037] According to the embodiment of the present utility model, the frame 100, by connecting the rear frame 20 and the front frame 10, and the rear frame 20 adopting an integral molding process, can reduce the use of welding processes, improve the structural strength of the rear frame 20, so that the rear frame 20 has a good load-bearing effect, avoid the weld seams formed by welding from reducing the quality of the rear frame 20, simplify the process flow of the rear frame 20, improve the overall processing efficiency of the frame 100, extend the service life of the frame 100, and at the same time, make the frame 100 structure compact, reduce the space occupied by the frame 100, reduce production costs, and make the rear frame 20 have good sealing performance.

[0038] According to some embodiments of this utility model, the rear frame 20 is a casting.

[0039] The casting process involves pouring molten metal into a mold cavity that conforms to the shape and size of the rear frame 20, and then allowing it to cool and solidify to obtain the rear frame 20. Therefore, the rear frame 20 is a casting, which avoids the need for welding multiple parts, improves the structural strength of the rear frame 20, and enhances the internal machining accuracy. The dimensions of the rear frame 20 can be adjusted according to different requirements of the frame 100, effectively improving the practicality and reliability of the frame 100. Furthermore, the casting process allows the rear frame 20 to have a greater weight, improving the stability of the frame 100.

[0040] According to some embodiments of this utility model, such as Figure 1 and Figure 2As shown, the front frame 10 and the rear frame 20 are connected along the front-rear direction of the frame 100, and the side wall of the rear frame 20 along the left-right direction of the frame 100 is flush with the side wall of the front frame 10 along the left-right direction of the frame 100.

[0041] The front frame 10 and the rear frame 20 are aligned and fitted together along the front-rear direction (first direction A) of the frame 100. The rear frame 20 is aligned with the front frame 10 along the left-right direction (second direction B) of the frame 100. The widths of the front frame 10 and the rear frame 20 are equal or approximately equal, so that the rear frame 20 can cover the entire width of the frame 100. After the rear frame 20 is assembled with the front frame 10, because of its equal width, it can further prevent sand, mud, and water from entering the interior of the frame 100 from between the front frame 10 and the rear frame 20. This can be understood as preventing mud and water below the front frame 10 and the rear frame 20 from entering their upper surfaces.

[0042] Therefore, the front frame 10 and the rear frame 20 are connected along the longitudinal direction of the frame 100. The side walls of the rear frame 20 along the lateral direction of the frame 100 are flush with the side walls of the front frame 10 along the lateral direction of the frame 100. This improves the sealing of the outer periphery of the frame 100, preventing external sand, dust, and other impurities from entering the interior of the frame 100 and ensuring a good working environment inside the frame 100. Simultaneously, the front frame 10 and the rear frame 20 have the same width in the second direction B of the frame 100, increasing the utilization of the space at the rear of the front frame 10. Since the frame 100 itself is relatively heavy, when used in a forklift, the weight and size of the counterweight unit on the forklift can be reduced, which facilitates the miniaturization of the vehicle, resulting in a smaller turning radius, improved operational capabilities, and reduced requirements for different usage scenarios.

[0043] According to some embodiments of this utility model, such as Figure 2 As shown, the front frame 10 includes a body portion 11 and an end plate 12. The end plate 12 is located at one end of the body portion 11 adjacent to the rear frame 20. A first mounting hole is formed on the end plate 12. A first fastener 121 is adapted to pass through the first mounting hole to connect the end plate 12 and the rear frame 20.

[0044] That is, the main body 11 extends along the first direction A of the frame 100, and an end plate 12 is provided at one end of the main body 11 adjacent to the rear frame 20 along the first direction A. The end plate 12 can be used for sealing the interior of the front frame 10 and for mounting the rear frame 20. The end plate 12 and the rear frame 20 are opposite each other along the first direction A of the front frame 10. A first mounting hole is formed by passing through the end plate 12 along the first direction A of the frame 100. By passing the first fastener 121 through the first mounting hole and the rear frame 20 along the first direction A of the frame 100, the end plate 12 of the front frame 10 and the rear frame 20 are detachably connected.

[0045] In this embodiment, a plurality of first mounting holes are formed on the end plate 12. The plurality of first mounting holes are respectively arranged at intervals along the second direction B of the frame 100. The first fastener 121 may be a screw or a bolt.

[0046] Therefore, the end plate 12 is located at one end of the main body 11 adjacent to the rear frame 20. A first mounting hole is formed on the end plate 12, and a first fastener 121 is adapted to pass through the first mounting hole to connect the end plate 12 and the rear frame 20. This improves the connection strength between the front frame 10 and the rear frame 20, enhances the reliability and stability of the frame 100, and increases the assembly efficiency of the front frame 10 and the rear frame 20, facilitating rapid assembly and disassembly of the front frame 10 and the rear frame 20. Furthermore, the connection between the first mounting hole and the first fastener 121 simplifies the connection structure, reduces the assembly cost of the front frame 10 and the rear frame 20, and provides high reliability and stability.

[0047] According to some embodiments of this utility model, such as Figure 2 As shown, the frame 100 also includes an extension plate 30, which is located at one end of the main body 11 near the rear frame 20. The extension plate 30 is connected to the main body 11 and extends toward the rear frame 20. The extension plate 30 is connected to the rear frame 20.

[0048] The extension plate 30 is located above the end plate 12, with one end of the extension plate 30 connected to the front frame 10 and the end plate 12, and the other end of the extension plate 30 extending toward the rear frame 20 and protruding from the side surface of the end plate 12 away from the front frame 10. The extension plate 30 is detachably connected to the rear frame 20. When the front frame 10 and the rear frame 20 are assembled, the other end of the extension plate 30 is located above the rear frame 20 and is fixedly connected to the upper surface of the rear frame 20.

[0049] Therefore, the extension plate 30 is provided at one end of the main body 11 near the rear frame 20. The extension plate 30 is connected to the main body 11 and extends toward the rear frame 20. The extension plate 30 is connected to the rear frame 20, increasing the position for the rear frame 20 to be fitted to the front frame 10. Combined with the connection between the rear frame 20 and the end plate 12, the connection strength between the front frame 10 and the rear frame 20 can be further improved, avoiding stress concentration at the connection between the rear frame 20 and the end plate 12, improving the torsional resistance and load-bearing capacity of the frame 100, and improving the reliability and stability of the connection between the front frame 10 and the rear frame 20.

[0050] According to some embodiments of this utility model, such as Figure 2 As shown, the extension plate 30 has a second mounting hole 31, and the second fastener 32 is adapted to pass through the second mounting hole 31 and connect to the rear frame 20.

[0051] That is, a second mounting hole 31 is formed by passing through the extension plate 30 along the height direction of the frame 100. By passing the second fastener 32 through the second mounting hole 31 and the rear frame 20 along the height direction of the frame 100, the extension plate 30 of the frame 100 and the rear frame 20 are detachably connected.

[0052] In this embodiment, the extension plate 30 has a plurality of second mounting holes 31, which are staggered and spaced apart on the extension plate 30. The second fastener 32 may be a screw or a bolt.

[0053] Therefore, the extension plate 30 has a second mounting hole 31, and the second fastener 32 is adapted to pass through the second mounting hole 31 and connect with the rear frame 20. This avoids relative displacement between the extension plate 30 and the rear frame 20, improves the connection strength and stability between the front frame 10 and the rear frame 20, and also increases the load-bearing capacity of the frame 100. The extension plate 30 and the rear frame 20 are assembled through the second fastener 32 and the second mounting hole 31, simplifying the connection structure between the front frame 10 and the rear frame 20, reducing costs, and improving assembly efficiency due to the simple installation structure.

[0054] According to some embodiments of this utility model, such as Figure 2 As shown, the front frame 10 has a mounting groove formed at one end of the front frame 10 adjacent to the rear frame 20. The extension plate 30 and the end plate 12 define the mounting groove, and the rear frame 20 mates with the mounting groove.

[0055] That is, the extension plate 30 provided along the first direction A of the frame 100 is perpendicularly connected to the end plate 12 provided along the height direction of the frame 100, and a mounting groove is formed between the extension plate 30 and the end plate 12. The end plate 12 and the extension plate 30 are respectively detachably connected to the rear frame 20, so that the mounting groove can be matched with the end of the rear frame 20 adjacent to the front frame 10.

[0056] Therefore, a mounting groove is formed at one end of the front frame 10 adjacent to the rear frame 20. The extension plate 30 and the end plate 12 define the mounting groove. The rear frame 20 mates with the mounting groove, providing guidance for the connection between the end plate 12, the extension plate 30, and the rear frame 20, improving assembly efficiency. Compared to the welded connection between the front frame 10 and the rear frame 20, the detachable connection of the front frame 10 and the rear frame 20 at multiple points and in multiple directions improves the structural strength and reliability of the connection. Simultaneously, it improves the space utilization of the front frame 10 and the rear frame 20, increasing the limiting effect on the rear frame 20 and the contact area of ​​the connection between the front frame 10 and the rear frame 20 by using the extension plate 30 and the end plate 12.

[0057] According to some embodiments of this utility model, such as Figure 2 As shown, the rear frame 20 includes: a first connecting part 21 and a second connecting part 22. The first connecting part 21 is connected to the extension plate 30. The second connecting part 22 is connected to the first connecting part 21 near one end of the front frame 10. The second connecting part 22 is adapted to extend toward the ground along the vertical direction of the frame 100.

[0058] That is, one end of the first connecting part 21 is disposed near the extension plate 30, and the other end of the first connecting part 21 extends away from the extension plate 30 along the first direction A of the frame 100; one end of the second connecting part 22 is perpendicularly connected to one end of the first connecting part 21, and the other end of the second connecting part 22 extends away from the first connecting part 21 along the height direction of the frame 100.

[0059] Thus, the first connecting part 21 is connected to the extension plate 30, and the second connecting part 22 is connected to the end of the first connecting part 21 adjacent to the front frame 10. The second connecting part 22 is adapted to extend towards the ground along the vertical direction of the frame 100, that is, the height direction. Compared with the conventional frame 100, the rear frame 20 in this application has a larger volume in the height direction, which can increase the weight of the rear frame 20, reduce the weight of the vehicle counterweight unit and reduce the size of the counterweight unit, thereby reducing the overall size of the frame 100, improving the vehicle's flexibility and working ability in confined spaces, so as to be applicable to more scenarios.

[0060] According to some embodiments of this utility model, such as Figure 2 As shown, at least one receiving space 23 is formed on the side of the first connecting portion 21 and the second connecting portion 22 away from the front frame 10, and the surface of the receiving space 23 is formed as an arc surface.

[0061] That is, at least one receiving space 23 is defined between the first connecting portion 21 and the second connecting portion 22. The receiving space 23 is formed on the side of the rear frame 20 away from the front frame 10, and the projection shape of the receiving space 23 along the second direction B is arc-shaped. In this embodiment, the receiving space 23 is adapted to avoid the wheels of the vehicle, providing installation space for the wheels and the shock absorption system, and avoiding interference between the rear frame 20 and the wheel installation.

[0062] Therefore, at least one receiving space 23 is formed on the side of the first connecting part 21 and the second connecting part 22 away from the front frame 10. The surface of the receiving space 23 is formed as an arc surface, which can prevent the rear frame 20 from rubbing against the vehicle's wheels, facilitate wheel steering, make the vehicle run stably, improve the vehicle's safety and reliability, and at the same time reduce the space occupied by the frame 100 and improve the overall space utilization of the vehicle.

[0063] According to some embodiments of this utility model, such as Figure 2 As shown, there are multiple accommodating spaces 23, which are spaced apart; the rear frame 20 has at least one channel 24, which is located between two adjacent accommodating spaces 23, and the channel 24 is suitable for passing through an oil pipe.

[0064] In this embodiment, a plurality of receiving spaces 23 are formed on the side of the rear frame 20 away from the front frame 10, and the plurality of receiving spaces 23 are spaced apart along the second direction B of the frame 100. At the same time, at least one channel 24 is formed between two adjacent receiving spaces 23, and the channel 24 has an outlet that extends along the first direction A of the frame 100 and penetrates the surface of the second connecting portion 22 of the rear frame 20 away from the front frame 10. The channel 24 can extend inside the rear frame 20 so that the oil pipe of the vibration damping system can be installed in the channel 24, making the entire system structure of the rear frame 20 more neat, increasing the space utilization of the rear frame 20, and increasing safety.

[0065] Thus, the rear frame 20 has at least one channel 24, which is located between two adjacent accommodating spaces 23. The channel 24 is suitable for passing an oil pipe through, which can shorten the distance between the oil pipe and the steering axle, improve the working efficiency of the steering axle, optimize the structure of the rear frame 20, and at the same time improve the utilization rate of the internal space of the rear frame 20.

[0066] According to some embodiments of this utility model, such as Figure 2 As shown, the rear frame 20 also includes a steering axle mounting assembly 25, which includes a first protrusion 251 and a buffer member 252. The first protrusion 251 has a groove; the buffer member 252 is disposed in the groove, and the first protrusion 251 is adapted to mount the steering axle. The buffer member 252 abuts against the steering axle.

[0067] That is, the steering axle mounting assembly 25 is located between two adjacent receiving spaces 23, and the buffer member 252 is aligned with the groove along the height direction of the frame 100 and forms a fit. The buffer member 252 is suitable for buffering the vibration caused to the rear frame 20 by the rotation of the steering axle. The steering axle is suitable for controlling the steering of the wheels in the receiving space 23 of the rear frame 20, thereby changing the driving direction of the vehicle. In this embodiment, the buffer member 252 may be a rubber block or other flexible member.

[0068] Thus, the first protrusion 251 forms a groove, and the buffer 252 is disposed in the groove. The first protrusion 251 is suitable for mounting the steering axle, and the buffer 252 abuts against the steering axle. When the steering axle is working, the buffer 252 can reduce the wear between the steering axle and the rear frame 20, extend the service life of the frame 100, reduce the vibration generated by the steering axle, improve the overall stability of the frame 100, and reduce noise.

[0069] According to some embodiments of this utility model, such as Figure 3 Figure 3 As shown, there are multiple first protrusions 251, which are spaced apart and are adapted to connect with both ends of the steering axle; the steering axle mounting assembly 25 also includes a second protrusion 253, which is disposed between two adjacent first protrusions 251 and is adapted to abut against the steering axle.

[0070] In this embodiment, a plurality of first protrusions 251 are spaced apart along the first direction A of the frame 100, the steering axle is arranged along the second direction B of the frame 100, and the two ends of the steering axle along the second direction B respectively abut against the buffer member 252 in the groove of the first protrusion 251; a plurality of second protrusions 253 are spaced apart along the first direction A of the frame 100 and are arranged between two adjacent first protrusions 251.

[0071] Therefore, multiple first protrusions 251 are spaced apart and adapted to connect to both ends of the steering axle. Second protrusions 253 are disposed between two adjacent first protrusions 251 and adapted to abut against the steering axle. By limiting the steering axle together with the first protrusions 251 and the second protrusions 253, the swaying of the steering axle can be avoided. At the same time, the connection strength between the steering axle and the rear frame 20 can be improved, thereby improving the reliability and stability of the steering axle.

[0072] According to some embodiments of the present invention, the first protrusion 251 and the second protrusion 253 are integrally formed with the rear frame 20.

[0073] In this embodiment, the first protrusion 251 and the second protrusion 253 are integrally formed with the rear frame 20, which improves the connection strength between the steering axle mounting assembly 25 and the rear frame 20, improves the reliability of the steering axle mounting assembly 25 and the structural strength of the rear frame 20, reduces the machining accuracy of the first protrusion 251 and the second protrusion 253, improves the machining efficiency of the steering axle mounting assembly 25 and the rear frame 20, thereby improving the overall machining efficiency of the frame 100, saving machining costs, realizing mass production of the frame 100, and improving economic efficiency.

[0074] According to some embodiments of this utility model, the rear frame 20 is a cast iron or cast steel part.

[0075] That is, the rear frame 20 can be made of cast iron or cast steel, which can improve the structural strength of the rear frame 20, increase the weight of the rear frame 20, reduce the weight and volume of the counterweight unit used to increase the vehicle, reduce the production cost of the rear frame 20, improve the bending resistance of the rear frame 20, prevent the rear frame 20 from deforming or breaking, and extend the service life of the rear frame 20.

[0076] In this embodiment, the rear frame 20 can also be made of other metal, alloy or non-metal materials, depending on actual production needs.

[0077] The chassis according to the second aspect of the present invention includes the frame 100 of any one of the first aspect embodiments described above.

[0078] According to the chassis in this embodiment of the present utility model, by adopting the aforementioned front frame 10 and rear frame 20 detachably connected to form a frame 100, the structural strength of the chassis can be effectively improved, the overall weight of the frame 100 can be increased, the center of gravity of the frame 100 can be lowered, and the stability of the frame 100 can be improved. At the same time, due to the integral molding of the rear frame 20, the assembly efficiency and structural strength of the chassis can be improved.

[0079] The vehicle according to a third aspect embodiment of the present invention includes the frame 100 of any of the first aspect embodiments described above, or the chassis of the second aspect embodiments described above.

[0080] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0081] In the description of this utility model, "first feature" and "second feature" may include one or more of the features. In the description of this utility model, "multiple" means two or more. In the description of this utility model, "above" or "below" the second feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. In the description of this utility model, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature.

[0082] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0083] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A frame (100), characterized in that, include: Front frame (10); The rear frame (20) is connected to the front frame (10). The rear frame (20) is an integrally formed part. The widths of the front frame (10) and the rear frame (20) are equal. The front frame (10) includes a body (11), an end plate (12), and an extension plate (30). The end plate (12) is located at one end of the body (11) adjacent to the rear frame (20). A first mounting hole is formed on the end plate (12). A first fastener (121) is adapted to pass through the first mounting hole to connect the end plate (12) and the rear frame (20). The extension plate (30) is located at one end of the body (11) adjacent to the rear frame (20). The extension plate (30) is connected to the body (11) and extends toward the rear frame (20). The extension plate (30) is connected to the rear frame (20).

2. The frame (100) according to claim 1, characterized in that, The rear frame (20) is a casting.

3. The frame (100) according to claim 1, characterized in that, The front frame (10) and the rear frame (20) are connected along the front-rear direction of the frame (100), and the side wall of the rear frame (20) along the left-right direction of the frame (100) is flush with the side wall of the front frame (10) along the left-right direction of the frame (100).

4. The frame (100) according to claim 1, characterized in that, The extension plate (30) has a second mounting hole (31), and the second fastener (32) is adapted to pass through the second mounting hole (31) and connect to the rear frame (20).

5. The frame (100) according to claim 1, characterized in that, The front frame (10) has a mounting groove formed at one end of the front frame (10) adjacent to the rear frame (20), the extension plate (30) and the end plate (12) define the mounting groove, and the rear frame (20) mates with the mounting groove.

6. The frame (100) according to claim 1, characterized in that, The rear frame (20) includes: The first connecting part (21) is connected to the extension plate (30); The second connecting part (22) is connected to the first connecting part (21) at one end adjacent to the front frame (10), and the second connecting part (22) is adapted to extend toward the ground along the vertical direction of the frame (100).

7. The frame (100) according to claim 6, characterized in that, The first connecting portion (21) and the second connecting portion (22) have at least one receiving space (23) formed on the side away from the front frame (10), and the surface of the receiving space (23) is formed as an arc surface.

8. The frame (100) according to claim 7, characterized in that, The accommodating space (23) is multiple, and the multiple accommodating spaces (23) are spaced apart; The rear frame (20) has at least one channel (24) located between two adjacent receiving spaces (23), and the channel (24) is adapted to carry an oil pipe.

9. The frame (100) according to claim 1, characterized in that, The rear frame (20) further includes: a steering axle mounting assembly (25), the steering axle mounting assembly (25) comprising: The first protrusion (251) has a groove formed thereon; A buffer (252) is provided at the groove, and the first protrusion (251) is adapted to install the steering axle. The buffer (252) abuts against the steering axle.

10. The frame (100) according to claim 9, characterized in that, There are multiple first protrusions (251), and the multiple first protrusions (251) are spaced apart. The multiple first protrusions (251) are adapted to connect to both ends of the steering axle. The steering axle mounting assembly (25) further includes a second protrusion (253), which is disposed between two adjacent first protrusions (251) and is adapted to abut against the steering axle.

11. The frame (100) according to claim 10, characterized in that, The first protrusion (251) and the second protrusion (253) are integrally formed with the rear frame (20).

12. The frame (100) according to any one of claims 1-11, characterized in that, The rear frame (20) is made of cast iron or cast steel.

13. A chassis, characterized in that, Includes the frame (100) according to any one of claims 1-12.

14. A vehicle, characterized in that, Includes the frame (100) according to any one of claims 1-12, or the chassis according to claim 13.

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