A vehicle frame structure and a vehicle

Abstract

The utility model relates to a car technical field especially relates to a kind of frame structure and car.The frame structure includes main frame, auxiliary frame;Main frame is rotatably connected with first axle;Auxiliary frame is rotatably connected with second axle, and is slidably connected with main frame;Main frame and auxiliary frame have wheel base adjustment state between, and under the condition of wheel base adjustment state, main frame and auxiliary frame relatively move, to adjust the relative position of first axle and second axle, so, the distance between first axle and second axle can be adjusted, i.

Description

Technical Field

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

[0002] To cope with numerous and complex usage scenarios, the current technical solution for freight trucks is to develop various platform vehicles with different lengths and axle loads to meet diverse needs. However, this approach involves high development costs, long development cycles, and makes it difficult to satisfy customer requirements. Utility Model Content

[0003] This utility model provides a chassis structure and an automobile to solve the technical problem in the prior art where freight trucks need to be developed in various models with different lengths and axle loads to meet diverse needs, resulting in high development costs, long development cycles, and difficulty in meeting customer requirements.

[0004] In a first aspect, this utility model provides a vehicle frame structure, which includes a main frame and a subframe; the main frame is rotatably connected to a first axle; the subframe is rotatably connected to a second axle and slidably connected to the main frame; the main frame and the subframe have a wheelbase adjustment state, and in the wheelbase adjustment state, the main frame and the subframe move relative to each other to adjust the relative positions of the first axle and the second axle.

[0005] In some embodiments, the main frame includes a main longitudinal beam, the main longitudinal beam being provided with a sliding groove extending in a second direction; the subframe includes a secondary longitudinal beam, the secondary longitudinal beam being slidably disposed within the sliding groove.

[0006] In some embodiments, the lower end of the main longitudinal beam is provided with the sliding groove.

[0007] In some embodiments, the frame structure further includes a rolling kinematic pair disposed between the top wall of the sliding groove and the secondary longitudinal beam, and / or disposed between the bottom wall of the sliding groove and the secondary longitudinal beam.

[0008] In some embodiments, the rolling motion pair includes a cage and balls, the cage extending along a second direction and having pockets on the cage; the balls are disposed in the pockets and contact the sliding groove and the secondary longitudinal beam respectively.

[0009] In some embodiments, the sliding groove is disposed around the outer periphery of the secondary longitudinal beam, and the sliding groove has an opening at one end facing the outer side of the main frame in a first direction; a portion of the secondary longitudinal beam protrudes from the sliding groove through the opening, and the portion of the secondary longitudinal beam is connected to the second axle; wherein the first direction and the second direction intersect.

[0010] In some embodiments, the frame structure further includes a locking assembly connected to the main frame and the subframe respectively to lock the main frame and the subframe; or, the locking assembly is separated from at least one of the main frame and the subframe to unlock the main frame and the subframe, so that the main frame and the subframe are in a wheelbase adjustment state.

[0011] In some embodiments, the sliding groove has a first through hole on the side wall facing the inner side of the main frame in a first direction, and the sub-longitudinal beam has a second through hole; the locking assembly includes a locking pin, which is adapted to be inserted into the first through hole and the second through hole to lock the main frame and the sub-frame, or to be moved away from the first through hole and the second through hole to unlock the main frame and the sub-frame.

[0012] In some embodiments, a plurality of first through holes and a plurality of second through holes are provided, and the plurality of first through holes and the plurality of second through holes are respectively spaced apart along the second direction. Each first through hole is adapted to correspond to a second through hole for the insertion of the locking pin.

[0013] In some embodiments, the locking assembly further includes a swing arm rotatably connected to the main frame and the locking pin, respectively. The swing arm swings to push the locking pin to move, causing the locking pin to insert into the first through hole and the second through hole, or to move away from the first through hole and the second through hole.

[0014] In some embodiments, there are two main longitudinal beams and two secondary longitudinal beams, with the two main longitudinal beams spaced apart along a first direction and the two secondary longitudinal beams spaced apart along the first direction; the locking pin includes a first locking pin and a second locking pin, the middle part of the swing rod is hinged to the main frame, one end of the swing rod is hinged to the first locking pin, and the other end of the swing rod is hinged to the second locking pin, the swing rod swings to push the first locking pin and the second locking pin to move simultaneously, so that the first locking pin is inserted into the first through hole and the second through hole on one side, and the second locking pin is inserted into the first through hole and the second through hole on the other side; or, the first locking pin is moved away from the first through hole and the second through hole on one side, and the second locking pin is moved away from the first through hole and the second through hole on the other side.

[0015] In some embodiments, the locking assembly further includes a drive mechanism connected to the swing arm, the drive mechanism being configured to drive the swing arm to swing.

[0016] In some embodiments, the drive mechanism is one of a linear motor and a drive cylinder.

[0017] In some embodiments, the locking assembly further includes a sleeve extending in a first direction, and the locking pin is movably disposed within the sleeve.

[0018] In some embodiments, the main longitudinal beam includes a first main longitudinal beam and a second main longitudinal beam arranged sequentially along a second direction, the second main longitudinal beam being slidably connected to the subframe, and the first main longitudinal beam and the second main longitudinal beam having a plurality of first connection positions in the second direction; the frame structure further includes a locking assembly configured to be connected to the first main longitudinal beam and the second main longitudinal beam respectively, locking the first main longitudinal beam and the second main longitudinal beam at any of the first connection positions.

[0019] In some embodiments, the first main longitudinal beam is provided with a plurality of third through holes, and the second main longitudinal beam is provided with a plurality of fourth through holes, the plurality of third through holes and the plurality of fourth through holes being spaced apart along the second direction; the locking assembly includes a locking pin, the locking pin being inserted into any of the third through holes and any of the fourth through holes to lock the first main longitudinal beam and the second main longitudinal beam, or the locking pin being moved away from the third through holes and the fourth through holes to unlock the first main longitudinal beam and the second main longitudinal beam.

[0020] In some embodiments, the first main longitudinal beam includes a first sub-longitudinal beam and a second sub-longitudinal beam arranged sequentially along a second direction, the first sub-longitudinal beam and the second sub-longitudinal beam having a plurality of second connection positions in the second direction; the locking components are provided in a plurality of manner, the locking components near the first sub-longitudinal beam and the second sub-longitudinal beam being configured to be connected to the first sub-longitudinal beam and the second sub-longitudinal beam respectively, locking the first sub-longitudinal beam and the second sub-longitudinal beam at any of the second connection positions.

[0021] In some embodiments, the first sub-longitudinal beam is provided with a plurality of fifth through holes, and the second sub-longitudinal beam is provided with a plurality of third through holes, the plurality of fifth through holes being spaced apart along the second direction; the locking pin of the locking assembly is inserted into any of the fifth through holes and any of the third through holes to lock the first sub-longitudinal beam and the second sub-longitudinal beam, or the locking pin is moved away from the fifth through holes and the third through holes to unlock the first sub-longitudinal beam and the second sub-longitudinal beam.

[0022] In some embodiments, the frame structure further includes a carriage, which is fixedly connected to the main frame.

[0023] Secondly, this utility model embodiment also provides an automobile, which includes the frame structure described above.

[0024] Compared with prior art, the present invention has the following advantages:

[0025] The chassis structure of this utility model embodiment has a wheelbase adjustment state between the main chassis and the sub-chassis. In the wheelbase adjustment state, the main chassis and the sub-chassis move relative to each other to adjust the relative positions of the first axle and the second axle. This allows for adjustment of the distance between the first axle and the second axle, thus achieving wheelbase adjustment of the chassis structure. Furthermore, the relative movement of the sub-chassis and the main chassis does not affect the main chassis's load-bearing capacity. Therefore, the chassis structure of this embodiment can achieve wheelbase adjustment by moving the sub-chassis relative to the main chassis, given a fixed superstructure, to adapt to diverse wheelbase requirements under various road conditions, such as requirements for axle load and turning radius. This effectively solves the problems of high development costs and long development cycles associated with developing various vehicle models with different axle load platforms, better meeting customer needs.

[0026] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0028] Figure 1 This is a partial structural diagram of the automobile in an embodiment of this application;

[0029] Figure 2 This is a schematic diagram of the frame structure in the embodiments of this application;

[0030] Figure 3 This is a schematic diagram of the first angle structure at the main frame and subframe in the embodiments of this application;

[0031] Figure 4 This is a schematic diagram of the second angle structure at the main frame and subframe in the embodiments of this application;

[0032] Figure 5 This is a structural schematic diagram of the connection between the main longitudinal beam and the subframe in an embodiment of this application;

[0033] Figure 6 This is a schematic diagram of the locking component in an embodiment of this application;

[0034] Figure 7 This is a schematic diagram of the main longitudinal beam in an embodiment of this application;

[0035] Figure 8 This is a schematic diagram of the first usage state of the automobile in the embodiments of this application;

[0036] Figure 9 This is a schematic diagram of the second usage state of a car in an embodiment of this application.

[0037] Figure label:

[0038] 10. Main frame; 11. Main longitudinal beam; 12. Sliding groove; 13. First through hole; 14. First main longitudinal beam; 141. First sub-longitudinal beam; 142. Second sub-longitudinal beam; 15. Second main longitudinal beam; 16. Third through hole; 17. Fourth through hole; 18. Fifth through hole; 19. Main crossbeam; 191. Mounting plate;

[0039] 20. Subframe; 21. Sub-longitudinal beam; 22. Second through hole; 23. Opening;

[0040] 30. Locking assembly; 31. Locking pin; 311. First locking pin; 312. Second locking pin; 32. Swing rod; 33. Drive mechanism; 34. Connecting rod;

[0041] 40. Rolling kinematic pair; 41. Cage; 42. Ball bearing;

[0042] 51. Front wheel; 52. Rear wheel; 53. Locomotive; 54. Carriage;

[0043] X, first direction; Y, second direction; Z, third direction. Detailed Implementation

[0044] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0045] Freight trucks, generally called cargo trucks or lorries, are primarily used for transporting goods. Existing freight trucks face numerous and complex usage scenarios. For example, different countries have different axle load limits; different scenarios have different requirements for turning diameters; loads come in various shapes; the dimensions of transported goods vary widely (some goods are light and small, some are large in volume, and some have large longitudinal dimensions), while the vehicle dimensions remain fixed. Loading and transporting goods with large longitudinal dimensions presents many difficulties and dangers; nighttime parking is limited by parking space constraints, and parking longer vehicles is inconvenient. To address these complex usage scenarios, current solutions involve developing multiple vehicle types with the same load capacity to meet the needs of different usage scenarios in terms of axle load, turning radius, and cargo. This approach of developing multiple platform vehicles is costly and time-consuming. (Refer to...) Figures 1 to 9 As shown in the figure, this application discloses a frame structure that can adjust the length of the main beam and the wheelbase, thus solving the above-mentioned technical problems.

[0046] The following description, in conjunction with the accompanying drawings, details the vehicle frame structure and automobile provided in this application through specific embodiments and application scenarios. The vehicle frame structure has a first direction X, a second direction Y, and a third direction Z, all of which are perpendicular to each other. The first direction X represents the width of the vehicle frame structure, the second direction Y represents the length of the vehicle frame structure (i.e., the straight-line distance from the frontmost point of the vehicle to the rearmost point of the vehicle), and the third direction Z represents the height of the vehicle frame structure.

[0047] In some embodiments, a frame structure is provided including a main frame 10 and a subframe 20. The main frame 10 is rotatably connected to a first axle; the subframe 20 is rotatably connected to a second axle and slidably connected to the main frame 10; the main frame 10 and the subframe 20 have a wheelbase adjustment state, and in the wheelbase adjustment state, the main frame 10 and the subframe 20 move relative to each other to adjust the relative positions of the first axle and the second axle.

[0048] In this embodiment, the main frame 10 is the core load-bearing structure of the truck, used to bear the load of the cargo box 54, the goods, and various components. The main frame 10 is connected to the first axle, which is typically located below the front 53. The subframe 20 is used to support the rear axle, suspension, etc., connecting the axle, suspension, etc., to the main frame 10. The subframe 20 is connected to the second axle. It is understood that the number of the first and second axles is set according to usage requirements. For example, there may be two second axles, spaced apart along the second direction Y; or, for example, referring to... Figure 1As shown, there is one first axle and one second axle. The first axle is connected to the two front wheels 51, and the second axle is connected to the two rear wheels 52. (The first and second axles are not shown in the figure because they are obscured by various components. See reference...) Figure 1 As shown, the position of the first axle can be determined based on the position of the front wheel 51, and the position of the second axle can be determined based on the position of the rear wheel 52.

[0049] In the chassis structure of this embodiment, when the wheelbase is adjusted, the main chassis 10 and the sub-chassis 20 move relative to each other to adjust the relative positions of the first axle and the second axle. This allows for adjustment of the distance between the first and second axles, thus achieving wheelbase adjustment of the chassis structure. Furthermore, the relative movement of the sub-chassis 20 with the main chassis 10 does not affect the load-bearing capacity of the main chassis 10. Therefore, the chassis structure of this embodiment can achieve wheelbase adjustment by moving the sub-chassis 20 relative to the main chassis 10, given a fixed superstructure, to adapt to diverse wheelbase requirements under various road conditions, such as requirements for axle load and turning radius. This effectively solves the problems of high development costs and long development cycles associated with developing various vehicle models with different axle load platforms, better meeting customer needs.

[0050] The wheelbase of a car refers to the distance between the centers of the first and second axles. Adjusting the wheelbase can change the axle load of the car to meet different axle load requirements; it also changes the turning radius of the car, and can be adjusted to meet road conditions on unpaved roads.

[0051] In some embodiments, the frame structure further includes a cargo box 54, which is fixedly connected to the main frame 10. When the vehicle superstructure is determined, the cargo box 54 is mounted on the frame structure. In addition, in this embodiment, goods may be loaded in the cargo box 54.

[0052] In some embodiments, the main frame 10 includes a main longitudinal beam 11, which is provided with a sliding groove 12 extending in the second direction Y; the subframe 20 includes a secondary longitudinal beam 21, which is slidably disposed in the sliding groove 12.

[0053] In this embodiment of the application, the main longitudinal beam 11 extends along the second direction Y to both ends of the main frame 10. The frame structure realizes the sliding connection between the main longitudinal beam 11 and the secondary longitudinal beam 21 through the sliding groove 12. The sliding groove 12 restricts the sliding direction of the secondary longitudinal beam 21, making the sliding connection structure between the main longitudinal beam 11 and the secondary longitudinal beam 21 simple and stable and reliable.

[0054] In some embodiments, the main frame 10 includes two main longitudinal beams 11, which are spaced apart along a first direction X, and each main longitudinal beam 11 is provided with a sliding groove 12; the subframe 20 includes two secondary longitudinal beams 21, which are spaced apart along a first direction X, and each secondary longitudinal beam 21 is slidably disposed in a corresponding sliding groove 12.

[0055] In some embodiments, the lower end of the main longitudinal beam 11 is provided with a sliding groove 12, and the secondary longitudinal beam 21 is directly supported on the lower end of the main longitudinal beam 11, which can effectively support the main longitudinal beam 11 and avoid contact with the main longitudinal beam.

[0056] 11. Interference occurs during loading of cargo boxes, cargo handling, etc.

[0057] In some embodiments, the frame structure further includes a rolling kinematic pair 40, which is disposed between the top groove wall of the sliding groove 12 and the secondary longitudinal beam 21, and / or, the rolling kinematic pair 40 is disposed between the bottom groove wall of the sliding groove 12 and the secondary longitudinal beam 21.

[0058] In this embodiment, the rolling kinematic pair is a mechanism that achieves low-friction, high-precision relative motion between mechanical components through rolling elements. Its core principle is to replace sliding friction with rolling friction, which significantly reduces motion resistance and improves transmission efficiency.

[0059] The main frame 10 in the chassis structure is used for load bearing, with the weight of the cargo facing downwards. A sliding groove 12 is provided at the lower end of the main longitudinal beam 11. There is significant friction between the top wall of the sliding groove 12 and the secondary longitudinal beam 21, and between the bottom wall of the sliding groove 12 and the secondary longitudinal beam 21. Therefore, the rolling motion pair 40 reduces the friction between the secondary longitudinal beam 21 and the sliding groove 12 during movement, making it easier for the secondary frame 20 to move relative to the main frame 10. This allows for relative movement between the secondary frame 20 and the main frame 10 even when the superstructure is fixed, i.e., when the main frame 10 has a large load. Specifically, the top wall of the sliding groove 12 is the wall at one end of the sliding groove 12 in the third direction (Z), and the bottom wall of the sliding groove 12 is the wall at the other end of the sliding groove 12 in the third direction (Z). The top and bottom walls are positioned opposite each other.

[0060] In the embodiments of this application, the rolling kinematic pair 40 is disposed between the top groove wall of the sliding groove 12 and the secondary longitudinal beam 21, or the rolling kinematic pair 40 is disposed between the bottom groove wall of the sliding groove 12 and the secondary longitudinal beam 21, or the rolling kinematic pair 40 is disposed between the top groove wall of the sliding groove 12 and the secondary longitudinal beam 21, and is disposed between the bottom groove wall of the sliding groove 12 and the secondary longitudinal beam 21. The rolling kinematic pair 40 is disposed in the above three ways.

[0061] It is understood that the friction between the sliding groove 12 and the secondary longitudinal beam 21 can also be reduced in other ways, such as by using lubricating oil. This application embodiment does not specifically limit the way to reduce the friction between the sliding groove 12 and the secondary longitudinal beam 21.

[0062] In some embodiments, the rolling kinematic pair 40 includes a cage 41 and balls 42. The cage 41 extends along a second direction Y and has a pocket (not shown in the figure; the specific structure of the pocket can be referred to in conventional technology applicable to the embodiments of this application). The balls 42 are disposed in the pockets and contact the top wall of the sliding groove 12 and the secondary longitudinal beam 21, and / or, the balls 42 contact the bottom wall of the sliding groove 12 and the secondary longitudinal beam 21, respectively. Specifically, when the rolling kinematic pair 40 is disposed between the top wall of the sliding groove 12 and the secondary longitudinal beam 21, the balls 42 contact both the top wall of the sliding groove 12 and the secondary longitudinal beam 21. When the rolling kinematic pair 40 is disposed between the bottom wall of the sliding groove 12 and the secondary longitudinal beam 21, the balls 42 contact both the bottom wall of the sliding groove 12 and the secondary longitudinal beam 21. The rolling of the balls 42 replaces the sliding friction between the sliding groove 12 and the secondary longitudinal beam 21, significantly reducing motion resistance and improving transmission efficiency.

[0063] In some embodiments, each ball 42 is disposed in a corresponding pocket.

[0064] It is understood that the rolling motion pair 40 can also use other rolling elements, such as needle rollers with sufficient strength. This application embodiment does not specifically limit this, but it needs to have the advantages of reducing motion resistance and having relatively low friction.

[0065] In some embodiments, the sliding groove 12 is provided around the outer periphery of the sub-longitudinal beam 21, and the sliding groove 12 has an opening 23 at one end facing the outer side of the main frame 10 in the first direction X; a portion of the sub-longitudinal beam 21 is exposed through the opening 23 in the sliding groove 12, and the portion of the sub-longitudinal beam 21 is connected to the second axle to achieve the connection with the second axle of the vehicle.

[0066] In some embodiments, the frame structure further includes a locking assembly 30, which is connected to the main frame 10 and the subframe 20 respectively to lock the main frame 10 and the subframe 20; or, the locking assembly 30 is separated from at least one of the main frame 10 and the subframe 20 to unlock the main frame 10 and the subframe 20, so that the main frame 10 and the subframe 20 are in a wheelbase adjustment state.

[0067] In this embodiment, the frame structure has a locked state and a wheelbase adjustment state during use. The locking assembly 30 is connected to the main frame 10 and the subframe 20 respectively, locking the main frame 10 and the subframe 20, which is the locked state, used to meet the normal use requirements of the frame structure. When it is necessary to adjust the wheelbase of the frame structure, the locking assembly 30 is separated from at least one of the main frame 10 and the subframe 20, unlocking the main frame 10 and the subframe 20, allowing the subframe 20 to slide relative to the main frame 10, which is the wheelbase adjustment state. In the wheelbase adjustment state, the distance between the first axle and the second axle can be adjusted, thus realizing the wheelbase adjustment of the frame structure. The locking assembly 30 enables the frame structure to meet the normal use requirements and wheelbase adjustment, and has the advantage of simple structure.

[0068] In some embodiments, the sliding groove 12 has a first through hole 13 on its sidewall facing the inner side of the main frame 10 in the first direction X, and the sub-longitudinal beam 21 has a second through hole 22; the locking assembly 30 includes a locking pin 31, which is adapted to be inserted into the first through hole 13 and the second through hole 22 to lock the main frame 10 and the sub-frame 20, or the locking pin 31 can be moved away from the first through hole 13 and the second through hole 22 to unlock the main frame 10 and the sub-frame 20. In this embodiment, the locking pin 31 is inserted into the first through hole 13 and the second through hole 22 to connect with the main frame 10 and the sub-frame 20 respectively. This locking method using the locking pin 31 and the through hole has the advantages of simple structure and stable reliability. After the locking pin 31 is removed from the second through hole 22, the main frame 10 and the sub-frame 20 can be unlocked, which also has the advantage of simple operation.

[0069] In some embodiments, a plurality of first through holes 13 and second through holes 22 are provided, and the plurality of first through holes 13 and the plurality of second through holes 22 are respectively arranged at intervals along the second direction Y. Each first through hole 13 is adapted to be arranged corresponding to a second through hole 22 for the insertion of a locking pin 31, that is, the locking pin 31 is inserted into any first through hole 13 and any second through hole 22 to be connected to the main frame 10 and the sub-frame 20 respectively.

[0070] In this embodiment of the application, each first through hole 13 can be correspondingly set with any second through hole 22. In this way, there are multiple lockable connection positions between the main frame 10 and the sub-frame 20, and the frame structure has multiple wheelbases to meet the diverse requirements for wheelbase.

[0071] In some embodiments, the locking assembly 30 further includes a swing rod 32, which is rotatably connected to the main frame 10 and the locking pin 31 respectively. The swing rod 32 swings to push the locking pin 31 to move, so that the locking pin 31 is inserted into the first through hole 13 and the second through hole 22, or the locking pin 31 is moved away from the first through hole 13 and the second through hole 22. It has the advantages of simple structure and simple operation.

[0072] In some embodiments, there are two main longitudinal beams 11 and two secondary longitudinal beams 21, with the two main longitudinal beams 11 spaced apart along the first direction X, and the two secondary longitudinal beams 21 spaced apart along the first direction X; the locking pin 31 includes a first locking pin 311 and a second locking pin 312, the middle part of the swing rod 32 is hinged to the main frame 10, one end of the swing rod 32 is hinged to the first locking pin 311, and the other end of the swing rod 32 is hinged to the second locking pin 312. The swing rod 32 swings and pushes the first locking pin 311 and the second locking pin 312 to move simultaneously, so that the first locking pin 311 is inserted into the first through hole 13 and the second through hole 22 on one side, and the second locking pin 312 is inserted into the first through hole 13 and the second through hole 22 on the other side; or, the first locking pin 311 is moved away from the first through hole 13 and the second through hole 22 on one side, and the second locking pin 312 is moved away from the first through hole 13 and the second through hole 22 on the other side.

[0073] In some embodiments, the locking assembly 30 further includes a drive mechanism 33 connected to the swing arm 32 and configured to drive the swing arm 32 to swing.

[0074] When the locking assembly 30 of this embodiment is in use, the driving end of the driving mechanism 33 drives the swing rod 32 to rotate. The swing rod 32 rotates around the middle. One end of the swing rod 32 moves toward or away from the main longitudinal beam 11 on the first direction X side, and the other end of the swing rod 32 moves toward or away from the main longitudinal beam 11 on the other side of the first direction X. During the movement of the two ends of the swing rod 32, it pushes the first locking pin 311 and the second locking pin 312 to move toward each other or away from each other.

[0075] In this embodiment, the locking assembly 30 includes a drive mechanism 33, a swing rod 32, and two locking pins 31. Moreover, the two locking pins 31 can be moved simultaneously by the drive mechanism 33 and the swing rod 32 to fix the main longitudinal beam 11 and the secondary longitudinal beam 21 on both sides, which has the advantages of simple structure and simple operation.

[0076] In some embodiments, the main frame 10 further includes a main crossbeam 19 extending along a first direction X. One end of the main crossbeam 19 is connected to a main longitudinal beam 11, and the other end of the main crossbeam 19 is connected to another main longitudinal beam 11. A mounting plate 191 is provided on the main crossbeam 19, and a swing arm 32 is rotatably connected to the mounting plate 191 via a connecting rod 34.

[0077] In some embodiments, a drive mechanism 33 is disposed on one side of the swing arm 32 in the first direction X, and the drive mechanism 33 extends and retracts to drive the swing arm 32 to rotate.

[0078] In some embodiments, the drive mechanism 33 is not specifically limited, as long as it meets the driving requirements of the swing arm 32. For example, the drive mechanism 33 is one of a linear motor and a drive cylinder.

[0079] In some embodiments, the locking assembly 30 further includes a sleeve extending along a first direction X, and a locking pin 31 is movably disposed within the sleeve. Thus, the sleeve can restrict the movement trajectory of the locking pin 31, ensuring that the locking pin 31 is accurately inserted into or removed from the first through hole 13 and the second through hole 22.

[0080] In some embodiments, the main longitudinal beam 11 includes a first main longitudinal beam 14 and a second main longitudinal beam 15 arranged sequentially along the second direction Y. The second main longitudinal beam 15 is slidably connected to the subframe 20. The first main longitudinal beam 14 and the second main longitudinal beam 15 have multiple first connection positions in the second direction Y. The frame structure also includes a locking assembly 30, which is configured to be connected to the first main longitudinal beam 14 and the second main longitudinal beam 15 respectively, locking the first main longitudinal beam 14 and the second main longitudinal beam 15 at any of the first connection positions.

[0081] In this embodiment of the application, there are multiple locking components 30 to meet multiple locking requirements in the frame structure (e.g., locking requirements of locking components 30 for main longitudinal beam 11 and secondary longitudinal beam 21, and locking requirements for first main longitudinal beam 14 and second main longitudinal beam 15). The locking components 30 near the connection position of the first main longitudinal beam 14 and the second main longitudinal beam 15 are configured to be connected to the first main longitudinal beam 14 and the second main longitudinal beam 15 respectively.

[0082] In this embodiment of the application, the first main longitudinal beam 14 and the second main longitudinal beam 15 have multiple first connection positions in the second direction Y. When the first main longitudinal beam 14 and the second main longitudinal beam 15 are in different first connection positions, the length of the main longitudinal beam 11 is different. Therefore, the frame structure can also adjust the length of the frame structure and the wheelbase by adjusting the multiple first connection positions between the first main longitudinal beam 14 and the second main longitudinal beam 15.

[0083] When in use, the locking assembly 30, located near the connection point of the first main longitudinal beam 14 and the second main longitudinal beam 15, connects to both beams, locking them in either of their respective first connection positions to meet standard usage requirements. When the length of the main longitudinal beam 11 needs adjustment, the locking assembly 30 separates from at least one of the beams, unlocking them and allowing relative movement. This enables length adjustment of the main longitudinal beam 11. After adjustment, the locking assembly 30 locks the beams back into their desired first connection positions, thus completing the length adjustment of the main longitudinal beam 11. This method offers the advantages of simple and convenient adjustment.

[0084] In some embodiments, the first main longitudinal beam 14 is provided with a plurality of third through holes 16, and the second main longitudinal beam 15 is provided with a plurality of fourth through holes 17. The plurality of third through holes 16 and the plurality of fourth through holes 17 are spaced apart along the second direction Y. The locking assembly 30 includes a locking pin 31, which is inserted into any of the third through holes 16 and any of the fourth through holes 17 to lock the first main longitudinal beam 14 and the second main longitudinal beam 15. Alternatively, the locking pin 31 can be moved away from the third through holes 16 and the fourth through holes 17 to unlock the first main longitudinal beam 14 and the second main longitudinal beam 15.

[0085] In this embodiment of the application, each third through hole 16 can be correspondingly set with any fourth through hole 17. Thus, there are multiple lockable first connection positions between the first main longitudinal beam 14 and the second main longitudinal beam 15. Consequently, the main longitudinal beam 11 has multiple lengths, and the frame structure has multiple lengths and wheelbases, satisfying diverse requirements for the length of the main frame 10 and diverse requirements for the wheelbase.

[0086] Locking pins 31 are inserted into either the third through hole 16 or the fourth through hole 17 to connect with the first main longitudinal beam 14 and the second main longitudinal beam 15 respectively, locking the first and second main longitudinal beams 14 and 15. This locking method using locking pins 31 and through holes has the advantages of simple structure and stable reliability. After the locking pins 31 are removed from the third through hole 16 and the fourth through hole 17, the first and second main longitudinal beams 14 and 15 can be unlocked, allowing them to move relative to each other and adjust the length of the main longitudinal beam 11. This also has the advantage of simple operation.

[0087] In some embodiments, the first main longitudinal beam 14 includes a first sub-longitudinal beam 141 and a second sub-longitudinal beam 142 arranged sequentially along the second direction Y. The first sub-longitudinal beam 141 and the second sub-longitudinal beam 142 have multiple second connection positions in the second direction Y. The locking component 30 near the first sub-longitudinal beam 141 and the second sub-longitudinal beam 142 is configured to be connected to the first sub-longitudinal beam 141 and the second sub-longitudinal beam 142 respectively, locking the first sub-longitudinal beam 141 and the second sub-longitudinal beam 142 at any of the second connection positions.

[0088] In this embodiment of the application, the first sub-longitudinal beam 141 and the second sub-longitudinal beam 142 have multiple second connection positions in the second direction Y. When the first sub-longitudinal beam 141 and the second sub-longitudinal beam 142 are in different second connection positions, the length of the first main longitudinal beam 14 is different. Therefore, the frame structure can also adjust the length of the frame structure and the wheelbase by adjusting the multiple second connection positions between the first sub-longitudinal beam 141 and the second sub-longitudinal beam 142.

[0089] When in use, the locking assembly 30 located near the connection point of the first sub-longitudinal beam 141 and the second sub-longitudinal beam 142 is connected to both the first sub-longitudinal beam 141 and the second sub-longitudinal beam 142, locking them in either of the second connection positions to meet normal usage requirements. When it is necessary to adjust the length of the first main longitudinal beam 14, the locking assembly 30 is separated from at least one of the first sub-longitudinal beams 141 and 142, unlocking them and allowing them to move relative to each other. This allows for the adjustment of the length of the first main longitudinal beam 14. After adjustment, the locking assembly 30 locks the first sub-longitudinal beams 141 and 142 back into the desired second connection position, thus completing the adjustment of the length of the first main longitudinal beam 14. This method offers the advantages of simple and convenient adjustment.

[0090] In some embodiments, the first sub-longitudinal beam 141 is provided with a plurality of fifth through holes 18, and the second sub-longitudinal beam 142 is provided with a plurality of third through holes 16. The plurality of fifth through holes 18 are spaced apart along the second direction Y. The locking pin 31 of the locking assembly 30 is inserted into any of the fifth through holes 18 and any of the third through holes 16 to lock the first sub-longitudinal beam 141 and the second sub-longitudinal beam 142, or the locking pin 31 is moved away from the fifth through holes 18 and the third through holes 16 to unlock the first sub-longitudinal beam 141 and the second sub-longitudinal beam 142.

[0091] In this embodiment of the application, each third through hole 16 can be correspondingly set with any fifth through hole 18. Thus, there are multiple lockable second connection positions between the first sub-longitudinal beam 141 and the second sub-longitudinal beam 142. Consequently, the first main longitudinal beam 14 and the main longitudinal beam 11 have multiple lengths, and the frame structure has multiple wheelbases, satisfying the diverse requirements for the main frame 10 and the diverse requirements for the wheelbase.

[0092] Locking pins 31 are inserted into either the third through hole 16 or the fifth through hole 18 to connect with the first sub-longitudinal beam 141 and the second sub-longitudinal beam 142 respectively, locking the first sub-longitudinal beam 141 and the second sub-longitudinal beam 142. This locking method using locking pins 31 and through holes has the advantages of simple structure and stable reliability. After the locking pins 31 are removed from the third through hole 16 and the fifth through hole 18, the first sub-longitudinal beam 141 and the second sub-longitudinal beam 142 can be unlocked, allowing the first sub-longitudinal beam 141 and the second sub-longitudinal beam 142 to move relative to each other, realizing the length adjustment of the main longitudinal beam 11, which also has the advantage of simple operation.

[0093] In the vehicle frame structure of this application embodiment, the main longitudinal beam 11 includes a first main longitudinal beam 14 and a second main longitudinal beam 15. The first main longitudinal beam 14 includes a first sub-longitudinal beam 141 and a second sub-longitudinal beam 142. There are multiple second connection positions between the first sub-longitudinal beam 141 and the second sub-longitudinal beam 142, and there are multiple first connection positions between the second sub-longitudinal beam 142 and the second main longitudinal beam 15. Thus, the length of the main longitudinal beam 11 can be adjusted through two positions, which has the advantage of a large length adjustment range, so that more cars can be loaded and stored during the transportation or storage of the vehicle.

[0094] In other embodiments, the first sub-longitudinal beam 141 and the second sub-longitudinal beam 142, as well as the second sub-longitudinal beam 142 and the second main longitudinal beam 15, can be connected using fasteners such as bolts to save on the cost of the frame structure.

[0095] In some embodiments, the locking component 30 has four, as shown in the reference. Figure 2 In the second direction Y, the first locking component 30 is used to lock and unlock the first sub-longitudinal beam 141 and the second sub-longitudinal beam 142, the second locking component 30 is used to lock and unlock the second sub-longitudinal beam 142 and the second main longitudinal beam 15, and the third and fourth locking components 30 are used together to lock and unlock the main frame 10 and the sub-frame 20. Using two locking components 30 to lock and unlock the main frame 10 and the sub-frame 20 can ensure the locking strength of the main frame 10 and the sub-frame 20, making it safer.

[0096] Each locking assembly 30 has a swing rod 32, two sleeves, a first locking pin 311, a second locking pin 312, and a drive mechanism 33. The working process of each locking assembly 30 can be referred to the above description, and the embodiments of this application will not be repeated.

[0097] When the vehicle frame structure of this embodiment is in use, the rear wheels 52 of the vehicle are braked, and the locking pin 31 of the locking assembly 30 moves out from the third through hole 16 and the fifth through hole 18, unlocking the first sub-longitudinal beam 141 and the second sub-longitudinal beam 142. Under the traction of the vehicle's front traction force, the first sub-longitudinal beam 141 and the second sub-longitudinal beam 142 move relative to each other, causing the main frame 10 to extend or shorten. When the required length is reached, the locking pin 31 of the locking assembly 30 is inserted into the corresponding third through hole 16 and fifth through hole 18 to lock the first sub-longitudinal beam 141 and the second sub-longitudinal beam 142. Of course, the locking pin 31 can also be moved out from the third through hole 16 and the fourth through hole 17 to unlock the second sub-longitudinal beam 142 and the second main longitudinal beam 15. Under the traction of the front traction force of the vehicle, the second sub-longitudinal beam 142 and the second main longitudinal beam 15 move relative to each other, so that the main frame 10 extends or shortens. When the required length is reached, the locking pin 31 of the locking assembly 30 is inserted into the corresponding third through hole 16 and the fourth through hole 17 to lock the second sub-longitudinal beam 142 and the second main longitudinal beam 15.

[0098] When the rear wheels 52 of the vehicle are braked, the locking pin 31 of the locking assembly 30 moves out of the first through hole 13 and the second through hole 22, unlocking the main frame 10 and the subframe 20. Under the traction of the vehicle's front traction force, the main frame 10 and the subframe 20 slide relative to each other, adjusting the wheelbase of the frame structure. When the required wheelbase is reached, the locking pin 31 of the locking assembly 30 inserts into the first through hole 13 and the second through hole 22, locking the main frame 10 and the subframe 20. Since the relative sliding of the subframe 20 and the main frame 10 does not affect the main frame 10's load-bearing capacity on the cargo box 54 and the cargo, the wheelbase can be adjusted by adjusting the relative position of the subframe 20 and the main frame 10, i.e., adjusting the distance between the first axle and the second axle, given a fixed superstructure.

[0099] In one specific embodiment, refer to Figure 8 and Figure 9 As shown, the frame structure is in the superstructure state. By adjusting the relative position of the subframe 20 and the main frame 10, the wheelbase L1 to wheelbase L2 can be adjusted.

[0100] The frame structure provided in this application embodiment can adjust the length of the main longitudinal beam 11, and adjust the wheelbase by adjusting the length of the main longitudinal beam 11; it can also adjust the relative position of the subframe 20 and the main frame 10 to adjust the wheelbase. The frame structure has the advantage of a large adjustment margin. Moreover, with a fixed superstructure, the wheelbase can be adjusted by adjusting the relative position of the subframe 20 and the main frame 10 to adapt to various wheelbase requirements under different road conditions. The frame structure adjusts the wheelbase by locking and unlocking the locking assembly 30. The locking assembly 30 has the advantages of simple structure, low cost, and wide applicability.

[0101] This application also provides an automobile, which includes the frame structure described above. The length of the main longitudinal beam 11 of the frame structure is adjustable, as is the wheelbase of the frame structure, enabling the automobile to adapt to various road conditions and diverse wheelbase requirements, such as requirements for axle load and turning radius. This effectively solves the problems of high development costs and long development cycles caused by developing various platform automobiles with different lengths and axle loads, and meets customers' needs for automobile use.

[0102] In this embodiment, the frame structure and the automobile can be referenced to each other and have the same or similar beneficial effects as any of the aforementioned frame structures. To avoid repetition, they will not be described again here.

[0103] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0104] The various embodiments in this specification are described in a related manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0105] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model are included within the scope of protection of this utility model.

Claims

1. A vehicle frame structure, characterized in that, The vehicle frame structure includes, The main frame (10) is rotatably connected to the first axle; The subframe (20) is rotatably connected to the second axle and slidably connected to the main frame (10); The main frame (10) and the subframe (20) are in a wheelbase adjustment state, and in the wheelbase adjustment state, the main frame (10) and the subframe (20) move relative to each other to adjust the relative position of the first axle and the second axle.

2. The frame structure according to claim 1, characterized in that, The main frame (10) includes a main longitudinal beam (11), which is provided with a sliding groove (12) extending along a second direction (Y); The subframe (20) includes a sub-longitudinal beam (21), which is slidably disposed in the sliding groove (12).

3. The frame structure according to claim 2, characterized in that, The sliding groove (12) is provided at the lower end of the main longitudinal beam (11).

4. The vehicle frame structure according to claim 3, characterized in that, The frame structure also includes a rolling kinematic pair (40), which is located between the top wall of the sliding groove (12) and the secondary longitudinal beam (21), and / or between the bottom wall of the sliding groove (12) and the secondary longitudinal beam (21).

5. The frame structure according to claim 4, characterized in that, The rolling motion pair (40) includes, A retainer (41) extends along a second direction (Y) and has pockets on it; The ball (42) is disposed in the pocket and contacts the sliding groove (12) and the secondary longitudinal beam (21) respectively.

6. The frame structure according to claim 2, characterized in that, The sliding groove (12) is arranged around the outer periphery of the secondary longitudinal beam (21), and the sliding groove (12) has an opening (23) at one end facing the outside of the main frame (10) in the first direction (X); A portion of the secondary longitudinal beam (21) protrudes through the opening (23) into the sliding groove (12), and this portion of the secondary longitudinal beam (21) is connected to the second axle; wherein, The first direction (X) and the second direction (Y) intersect.

7. The frame structure according to claim 2, characterized in that, The frame structure also includes a locking assembly (30), which is connected to the main frame (10) and the subframe (20) respectively to lock the main frame (10) and the subframe (20); or, the locking assembly (30) is separated from at least one of the main frame (10) and the subframe (20) to unlock the main frame (10) and the subframe (20) so that the main frame (10) and the subframe (20) are in a wheelbase adjustment state.

8. The frame structure according to claim 7, characterized in that, The sliding groove (12) has a first through hole (13) on the side wall facing the inner side of the main frame (10) in the first direction (X), and the sub-longitudinal beam (21) has a second through hole (22). The locking assembly (30) includes a locking pin (31) adapted to be inserted into the first through hole (13) and the second through hole (22) to lock the main frame (10) and the subframe (20), or to be removed from the first through hole (13) and the second through hole (22) to unlock the main frame (10) and the subframe (20).

9. The frame structure according to claim 8, characterized in that, The first through hole (13) and the second through hole (22) are provided in multiples, and the multiple first through holes (13) and the multiple second through holes (22) are respectively arranged at intervals along the second direction (Y). Each first through hole (13) is adapted to be arranged corresponding to one second through hole (22) for the locking pin (31) to be inserted.

10. The frame structure according to claim 8, characterized in that, The locking assembly (30) further includes a swing rod (32), which is rotatably connected to the main frame (10) and the locking pin (31) respectively. The swing rod (32) swings to push the locking pin (31) to move, so that the locking pin (31) is inserted into the first through hole (13) and the second through hole (22), or moved away from the first through hole (13) and the second through hole (22).

11. The frame structure according to claim 10, characterized in that, Two main longitudinal beams (11) and two secondary longitudinal beams (21) are provided, the two main longitudinal beams (11) are spaced apart along the first direction (X), and the two secondary longitudinal beams (21) are spaced apart along the first direction (X); The locking pin (31) includes a first locking pin (311) and a second locking pin (312). The middle part of the swing rod (32) is hinged to the main frame (10). One end of the swing rod (32) is hinged to the first locking pin (311), and the other end of the swing rod (32) is hinged to the second locking pin (312). The swing rod (32) swings and pushes the first locking pin (311) and the second locking pin (312) to move simultaneously, so that the first locking pin (311) is inserted into the first through hole (13) and the second through hole (22) on one side, and the second locking pin (312) is inserted into the first through hole (13) and the second through hole (22) on the other side; or, the first locking pin (311) is moved away from the first through hole (13) and the second through hole (22) on one side, and the second locking pin (312) is moved away from the first through hole (13) and the second through hole (22) on the other side.

12. The vehicle frame structure according to claim 10, characterized in that, The locking assembly (30) further includes a drive mechanism (33) connected to the swing rod (32) and configured to drive the swing rod (32) to swing.

13. The frame structure according to claim 12, characterized in that, The drive mechanism (33) is one of a linear motor or a drive cylinder.

14. The frame structure according to claim 8, characterized in that, The locking assembly (30) further includes a sleeve extending in a first direction (X), and the locking pin (31) is movably disposed within the sleeve.

15. The frame structure according to claim 2, characterized in that, The main longitudinal beam (11) includes a first main longitudinal beam (14) and a second main longitudinal beam (15) arranged sequentially along the second direction (Y). The second main longitudinal beam (15) is slidably connected to the subframe (20). The first main longitudinal beam (14) and the second main longitudinal beam (15) have multiple first connection positions in the second direction (Y). The frame structure also includes a locking assembly (30) configured to connect to the first main longitudinal beam (14) and the second main longitudinal beam (15) respectively, locking the first main longitudinal beam (14) and the second main longitudinal beam (15) at either of the first connection positions.

16. The frame structure according to claim 15, characterized in that, The first main longitudinal beam (14) is provided with a plurality of third through holes (16), and the second main longitudinal beam (15) is provided with a plurality of fourth through holes (17). The plurality of third through holes (16) and the plurality of fourth through holes (17) are spaced apart along the second direction (Y). The locking assembly (30) includes a locking pin (31) which is inserted into either the third through hole (16) or the fourth through hole (17) to lock the first main longitudinal beam (14) and the second main longitudinal beam (15), or the locking pin (31) is moved away from the third through hole (16) and the fourth through hole (17) to unlock the first main longitudinal beam (14) and the second main longitudinal beam (15).

17. The frame structure according to claim 15, characterized in that, The first main longitudinal beam (14) includes a first sub-longitudinal beam (141) and a second sub-longitudinal beam (142) arranged sequentially along the second direction (Y). The first sub-longitudinal beam (141) and the second sub-longitudinal beam (142) have multiple second connection positions in the second direction (Y). The locking assembly (30) is provided in multiple parts, and the locking assembly (30) near the first sub-longitudinal beam (141) and the second sub-longitudinal beam (142) is configured to be connected to the first sub-longitudinal beam (141) and the second sub-longitudinal beam (142) respectively, locking the first sub-longitudinal beam (141) and the second sub-longitudinal beam (142) in any of the second connection positions.

18. The frame structure according to claim 17, characterized in that, The first sub-longitudinal beam (141) is provided with a plurality of fifth through holes (18), and the second sub-longitudinal beam (142) is provided with a plurality of third through holes (16). The plurality of fifth through holes (18) are spaced apart along the second direction (Y). The locking pin (31) of the locking assembly (30) is inserted into either the fifth through hole (18) or the third through hole (16) to lock the first sub-longitudinal beam (141) and the second sub-longitudinal beam (142), or the locking pin (31) is moved away from the fifth through hole (18) and the third through hole (16) to unlock the first sub-longitudinal beam (141) and the second sub-longitudinal beam (142).

19. The frame structure according to claim 1, characterized in that, The frame structure also includes a carriage (54), which is fixedly connected to the main frame (10).

20. A car, characterized in that, The vehicle includes a frame structure as described in any one of claims 1-19.

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