Tractor chassis and tractor

Abstract

The invention relates to the technical field of vehicles, and particularly discloses a tractor chassis and a tractor, the tractor chassis comprises a frame, a battery frame assembly and a suspension assembly, the battery frame assembly comprises a bottom frame, the bottom frame is provided with a plurality of battery packs, the battery packs are arranged at intervals in the transverse direction of the frame, the utilization rate of the transverse space of the frame is increased, and the utilization rate of the battery packs is increased; the two ends, in the longitudinal direction of the frame, of the bottom frame are perpendicularly and fixedly connected with the connecting supports respectively, the upper ends of the connecting supports are fixedly connected with the longitudinal beams through the suspension assemblies, the utilization rate of the vertical space of the frame is increased, and therefore the longitudinal space occupied by the battery pack for the frame is reduced, the wheelbase is reduced, and the operation flexibility is improved. Meanwhile, the self-weight is reduced to improve the loading capacity.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a tractor chassis and a tractor. Background Art

[0002] When a pure electric tractor adopts a bottom-mounted battery solution, the battery pack is not arranged properly, which occupies more length space, resulting in an increase in the vehicle's wheelbase, weight, and turning radius, thereby reducing the vehicle's load capacity and maneuverability. Summary of the Invention

[0003] The purpose of the present invention is to provide a tractor chassis to reduce the length space occupied by the battery pack and shorten the wheelbase of the vehicle.

[0004] The present invention provides a tractor chassis, comprising a frame, wherein the frame comprises two parallel longitudinal beams and a plurality of cross beams, wherein the plurality of cross beams are spaced apart along the length direction of the longitudinal beams, and the ends of the cross beams are respectively welded to the two longitudinal beams;

[0005] A battery frame assembly, the battery frame assembly comprising a bottom frame, a plurality of battery packs mounted on the bottom frame, the plurality of battery packs being spaced apart laterally along the frame, and connecting brackets being vertically fixedly connected at both ends of the bottom frame along the longitudinal direction of the frame;

[0006] The upper end of the connecting bracket is fixedly connected to the longitudinal beam through the suspension assembly.

[0007] As an optimal technical solution for the tractor chassis, the connecting brackets are provided in four numbers, and the four connecting brackets are arranged in groups of two. The two groups of connecting brackets are arranged on the bottom frame at intervals along the transverse direction of the frame, and the two connecting brackets in each group are arranged on the bottom frame at intervals along the longitudinal direction of the frame.

[0008] As an optimal technical solution for the tractor chassis, the battery frame assembly also includes two longitudinal connecting plates, which are respectively fixedly connected to two groups of connecting brackets, and the two ends of the longitudinal connecting plates are respectively fixedly connected to the two connecting brackets of the corresponding groups. The battery packs are provided in three numbers, and the longitudinal connecting plates are used to separate adjacent battery packs.

[0009] As an optimal technical solution for the tractor chassis, the battery frame assembly also includes two transverse connecting plates, which are spaced apart along the longitudinal direction of the frame. The transverse connecting plates extend laterally along the frame. The bottom of the transverse connecting plate is fixedly connected to the bottom frame, and the two ends of the transverse connecting plate are respectively fixedly connected to the two connecting brackets.

[0010] As an optimal technical solution for the tractor chassis, the battery frame assembly further includes two side guard plates, which are respectively connected to both sides of the battery frame assembly.

[0011] As an optimal technical solution for the tractor chassis, the battery frame assembly also includes a workbench, which is arranged above the bottom frame. The workbench is fixedly connected to the connecting bracket, and the workbench is used to provide protection for the upper surface of the battery pack.

[0012] As an optimal technical solution for the tractor chassis, the suspension assembly includes a base, a bracket, a vibration isolation bushing, a cover plate and a locking piece. The base is fixedly connected to the longitudinal beam, the connecting bracket is fixedly connected to the bracket, the cover plate is arranged on the side of the bracket away from the base, the vibration isolation bushing is arranged between the base and the bracket and between the bracket and the cover plate, and the locking piece passes through the cover plate and the bracket and is fixedly connected to the base.

[0013] As an optimal technical solution for the tractor chassis, it also includes an integrated bracket, which is located above the frame. The integrated bracket includes a pipe beam and a trailer valve bracket, a mounting plate, an air filter bracket and a pipe harness bracket installed on the pipe beam. The two ends of the pipe beam are respectively connected to the two longitudinal beams. The trailer valve bracket, the mounting plate, the air filter bracket and the pipe harness bracket are arranged at intervals along the extension direction of the pipe beam.

[0014] As an optimal technical solution for the tractor chassis, the tubular beam is an "X"-shaped structure.

[0015] The present invention provides a tractor, comprising the tractor chassis of any one of the above solutions.

[0016] The beneficial effects of the present invention are:

[0017] The present invention provides a tractor chassis, in which a plurality of battery packs are arranged on a bottom frame of a battery frame assembly at intervals along the lateral direction of the frame, thereby improving the utilization rate of the lateral space of the frame, and connecting brackets are vertically fixedly connected to both ends of the bottom frame along the longitudinal direction of the frame, and the upper ends of the connecting brackets are fixedly connected to the longitudinal beams through a suspension assembly, thereby improving the utilization rate of the vertical space of the frame, thereby reducing the occupation of the longitudinal space of the frame by the battery packs, thereby reducing the wheelbase and improving the handling flexibility, and at the same time reducing the dead weight to improve the load-bearing capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of a tractor chassis according to an embodiment of the present invention;

[0019] Figure 2 Schematic diagram of the structure of the suspension assembly in an embodiment of the present invention;

[0020] Figure 3 An exploded view of a suspension assembly according to an embodiment of the present invention;

[0021] Figure 4 Schematic diagram of the structure of the battery frame assembly in an embodiment of the present invention;

[0022] Figure 5 A schematic structural diagram of a battery frame assembly according to another embodiment of the present invention;

[0023] Figure 6 A schematic structural diagram of an integrated support in an embodiment of the present invention;

[0024] Figure 7 A schematic diagram of the installation position of the integrated bracket on the vehicle frame according to an embodiment of the present invention;

[0025] Figure 8 A schematic diagram of the structure of a battery pack assembled to a battery frame assembly according to an embodiment of the present invention;

[0026] Figure 9 This is a schematic structural diagram of the initial state of a battery pack assembled to a vehicle frame according to an embodiment of the present invention;

[0027] Figure 10 This is a structural diagram of the process of assembling the battery pack to the vehicle frame according to an embodiment of the present invention;

[0028] Figure 11 Schematic diagram of the structure after the battery pack is assembled to the vehicle frame in an embodiment of the present invention.

[0029] In the picture:

[0030] 1. Frame; 11. Longitudinal beam; 12. Cross beam;

[0031] 2. Battery frame assembly; 21. Bottom frame; 22. Connecting bracket; 23. Horizontal connecting plate; 24. Vertical connecting plate; 25. Side guard plate; 251. Operation hole; 26. Workbench;

[0032] 3. Battery pack;

[0033] 4. Suspension assembly; 41. Base; 42. Bracket; 43. Vibration isolation bushing; 44. Cover; 45. Locking piece;

[0034] 5. Integrated bracket; 51. Pipe beam; 52. Fixed seat; 53. Trailer valve bracket; 54. Mounting plate; 541. Trailer power supply socket hole; 542. EBS power supply socket hole; 543. Auxiliary power supply socket hole; 55. Air filter bracket; 56. Pipe harness bracket. DETAILED DESCRIPTION

[0035] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0036] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature being "above", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0037] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0038] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0039] like Figures 1-11As shown, this embodiment provides a tractor chassis, which is applied to a pure electric tractor or a hybrid tractor, and the tractor is a semi-trailer tractor. Specifically, the tractor chassis includes a frame 1, a battery frame assembly 2, a battery pack 3 and a suspension assembly 4. The frame 1 includes two parallel longitudinal beams 11 and a plurality of cross beams 12, and the plurality of cross beams 12 are spaced apart along the length direction of the longitudinal beams 11, and the two ends of the cross beams 12 are respectively welded to the two longitudinal beams 11. The battery frame assembly 2 is fixedly connected to the frame 1 and is used to install the battery pack 3. Please refer to Figure 4 、 Figure 5 and Figures 8-11 As shown, the battery frame assembly 2 includes a bottom frame 21, on which a plurality of battery packs 3 are mounted. The plurality of battery packs 3 are arranged at intervals along the lateral direction of the vehicle frame 1. Connecting brackets 22 are vertically fixedly connected at both ends of the bottom frame 21 along the longitudinal direction of the vehicle frame 1. The upper ends of the connecting brackets 22 are fixedly connected to the longitudinal beam 11 via the suspension assembly 4. The plurality of battery packs 3 are arranged at intervals along the lateral direction of the vehicle frame 1 on the bottom frame 21 of the battery frame assembly 2 to improve the utilization rate of the lateral space of the vehicle frame 1. The bottom frame 21 is vertically fixedly connected at both ends of the bottom frame 21 along the longitudinal direction of the vehicle frame 1 to connect the brackets 22. The upper ends of the connecting brackets 22 are fixedly connected to the longitudinal beam 11 via the suspension assembly 4 to improve the utilization rate of the vertical space of the vehicle frame 1, thereby reducing the longitudinal space occupied by the battery packs 3 in the vehicle frame 1, thereby reducing the wheelbase and improving maneuverability, while reducing the dead weight and improving load-bearing capacity.

[0040] For further information, please refer to Figure 4 As shown, four connecting brackets 22 are provided, with the four connecting brackets 22 arranged in groups of two. The two groups of connecting brackets 22 are spaced apart on the bottom frame 21 along the transverse direction of the vehicle frame 1, and the two connecting brackets 22 in each group are spaced apart on the bottom frame 21 along the longitudinal direction of the vehicle frame 1. In other words, the two groups of connecting brackets 22 are located on either side of the bottom frame 21 along the transverse direction of the vehicle frame 1. This not only facilitates connection to the longitudinal beam 11 of the vehicle frame 1 via the suspension assembly 4, but also provides protection for the battery pack 3 along the longitudinal direction of the vehicle frame 1.

[0041] For further information, please refer to Figure 4As shown, the battery frame also includes two longitudinal connecting plates 24, each fixedly connected to the two groups of connecting brackets 22. The two ends of the longitudinal connecting plates 24 are fixedly connected to the two connecting brackets 22 of the corresponding group, and the longitudinal connecting plates 24 extend longitudinally along the vehicle frame 1. Three battery packs 3 are provided, and the longitudinal connecting plates 24 are used to separate adjacent battery packs 3. Specifically, the two longitudinal connecting plates 24 separate and position the three battery packs 3, thereby improving the installation accuracy of the battery packs 3. Furthermore, the battery frame assembly 2 also includes two transverse connecting plates 23, spaced apart longitudinally along the vehicle frame 1. The transverse connecting plates 23 extend transversely along the vehicle frame 1. The bottoms of the transverse connecting plates 23 are fixedly connected to the bottom frame 21, and the ends of the transverse connecting plates 23 are fixedly connected to the two connecting brackets 22. Thus, the two longitudinal connecting plates 24 provide positioning in the transverse direction of the vehicle frame 1, and the two transverse connecting plates 23 provide positioning in the longitudinal direction of the vehicle frame 1, ultimately improving the installation accuracy of the battery packs 3 on the bottom frame 21. At the same time, the distance between the two longitudinal connecting plates 24 is equal to the distance between the two longitudinal beams 11, and the spacing between two adjacent battery packs 3 is greater than the width of the longitudinal beam 11, so that the two longitudinal beams 11 can be placed in the corresponding intervals of the battery packs 3 during installation, thereby improving space utilization. Figures 9-11 As shown, during installation, the battery is first installed in the battery frame assembly 2, then the longitudinal beam 11 of the frame 1 is aligned with the gap between the battery pack 3, and finally the battery frame assembly 2 is raised or the frame 1 is lowered, and the battery mounting frame is connected to the frame 1 through the suspension assembly 4.

[0042] Alternatively, as Figure 5As shown, the battery frame assembly 2 also includes two side guard plates 25, and the two side guard plates 25 are respectively connected to the two sides of the battery frame assembly 2. The battery pack 3 is protected by the side guard plates 25 to prevent the battery pack 3 from being hit by stones flying from the left and right sides of the vehicle during driving. In order to facilitate disassembly and assembly, the side guard plates 25 can adopt a split structure, that is, the side guard plates 25 include fixing parts and guard plates, and the fixing parts are fixedly connected to the bottom frame 21 and / or the connecting bracket 22. The guard plates and the fixing parts are connected by hooks or clips, so as to realize quick disassembly and assembly of the guard plates. An operating hole 251 can also be provided on the guard plate, and components such as the charging seat of the battery pack 3 are set in the operating hole 251 to facilitate charging and other operations. In addition, the battery frame assembly 2 also includes a workbench 26, and the workbench 26 is set as a single metal plate or a combination of multiple metal plates. A work platform 26 is positioned above the bottom frame 21 and is fixedly connected to the connecting bracket 22. It protects the upper surface of the battery pack 3 and provides a stepping surface for operators. During the semi-trailer tractor connection process, operators can step on the work platform 26, facilitating the connection operation. Furthermore, during loading, the work platform 26 effectively protects the battery pack 3 from spilled or dropped cargo, preventing it from hitting or even damaging it.

[0043] For details, please refer to Figure 2-Figure 3 As shown, the suspension assembly 4 includes a base 41, a bracket 42, a vibration isolation bushing 43, a cover plate 44, and a locking member 45. The base 41 is fixedly connected to the longitudinal beam 11, the connecting bracket 22 is fixedly connected to the bracket 42, and the cover plate 44 is arranged on the side of the bracket 42 away from the base 41. Vibration isolation bushings 43 are arranged between the base 41 and the bracket 42, and between the bracket 42 and the cover plate 44. The locking member 45 passes through the cover plate 44 and the bracket 42 and is fixedly connected to the base 41. The vibration isolation bushing 43 is made of rubber and is vulcanized onto the base 41 and bracket 42, thereby reducing the stress and vibration of the battery pack 3 and the battery frame assembly 2.

[0044] Furthermore, if Figure 6-Figure 7As shown, the tractor chassis also includes an integrated bracket 5, which is located above the vehicle frame 1. The integrated bracket 5 includes a pipe beam 51 and a trailer valve bracket 53, a mounting plate 54, an air filter bracket 55, and a pipe harness bracket 56 mounted on the pipe beam 51. The ends of the pipe beam 51 are respectively connected to the two longitudinal beams 11. The trailer valve bracket 53, the mounting plate 54, the air filter bracket 55, and the pipe harness bracket 56 are spaced apart along the extension direction of the pipe beam 51. In this embodiment, the ends of the pipe beam 51 are respectively fixedly connected to a fixing seat 52. The two fixing seats 52 are respectively fixedly connected to the left and right suspension brackets of the cab (not shown in the figure), and the left and right suspension brackets are respectively fixedly connected to the two longitudinal beams 11 of the vehicle frame 1. The trailer valve bracket 53 is used to mount the trailer valve. The mounting plate 54 is provided with a trailer power socket hole 541, an EBS (Electronic Brake System) power socket hole, and an auxiliary power socket hole 543. Trailer power socket hole 541 is used to mount the trailer power socket, EBS power socket hole 542 is used to mount the EBS power socket, and auxiliary power socket hole 543 is used to mount the auxiliary power socket. The air filter bracket 55 is used to mount the air filter assembly, and the wiring harness bracket 56 is used to secure the wiring harness. By providing the integrated bracket 5, the trailer valve, trailer power socket, EBS power socket, auxiliary power socket, air filter assembly, and wiring harness are centrally mounted or secured, reducing space usage and helping to further shorten the wheelbase. The tubular beam 51 is an "J"-shaped structure. By setting up the tubular beam 51 with an "J"-shaped structure, the trailer valve, trailer power socket, EBS power socket, auxiliary power socket, air filter assembly and pipeline harness are installed by utilizing the height space above the frame 1, thereby effectively utilizing the space above the frame 1 and creating conditions for further shortening the wheelbase.

[0045] This embodiment provides a tractor, including the tractor chassis of this embodiment. The tractor is a semi-trailer tractor. By setting the tractor chassis of this embodiment, the tractor has a shorter wheelbase, lighter weight, and smaller turning radius, thereby increasing the load capacity and making the operation more flexible.

[0046] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. Tractor chassis, characterized in that: include: A vehicle frame (1), the vehicle frame (1) comprising two parallel longitudinal beams (11) and a plurality of cross beams (12), the plurality of cross beams (12) being spaced apart along the length direction of the longitudinal beams (11), and the two ends of the cross beams (12) being respectively welded to the two longitudinal beams (11); A battery frame assembly (2), the battery frame assembly (2) comprising a bottom frame (21), a plurality of battery packs (3) being mounted on the bottom frame (21), the plurality of battery packs (3) being arranged at intervals along the transverse direction of the vehicle frame (1), and a connecting bracket (22) being vertically fixedly connected to both ends of the bottom frame (21) along the longitudinal direction of the vehicle frame (1); A suspension assembly (4), wherein the upper end of the connecting bracket (22) is fixedly connected to the longitudinal beam (11) through the suspension assembly (4).

2. The tractor chassis according to claim 1, characterized in that: The connecting brackets (22) are arranged in four groups, and the four connecting brackets (22) are arranged in pairs. The two groups of connecting brackets (22) are arranged on the bottom frame (21) at intervals along the transverse direction of the vehicle frame (1), and the two connecting brackets (22) in each group are arranged on the bottom frame (21) at intervals along the longitudinal direction of the vehicle frame (1).

3. The tractor chassis according to claim 2, characterized in that: The battery frame assembly (2) further comprises two longitudinal connecting plates (24), the two longitudinal connecting plates (24) being fixedly connected to two groups of connecting brackets (22) respectively, the two ends of the longitudinal connecting plates (24) being fixedly connected to two connecting brackets (22) of the corresponding groups respectively, the battery packs (3) being arranged in three, and the longitudinal connecting plates (24) being used to separate adjacent battery packs (3).

4. The tractor chassis according to claim 1, characterized in that: The battery frame assembly (2) further comprises two transverse connecting plates (23), the two transverse connecting plates (23) being spaced apart along the longitudinal direction of the vehicle frame (1), the transverse connecting plates (23) extending transversely along the vehicle frame (1), the bottom of the transverse connecting plate (23) being fixedly connected to the bottom frame (21), and the two ends of the transverse connecting plate (23) being fixedly connected to the two connecting brackets (22) respectively.

5. The tractor chassis according to claim 1, characterized in that: The battery frame assembly (2) further comprises two side guard plates (25), and the two side guard plates (25) are respectively connected to two sides of the battery frame assembly (2).

6. The tractor chassis according to claim 1, characterized in that: The battery frame assembly (2) further includes a workbench (26), which is arranged above the bottom frame (21). The workbench (26) is fixedly connected to the connecting bracket (22), and the workbench (26) is used to provide protection for the upper surface of the battery pack (3).

7. The tractor chassis according to claim 1, characterized in that: The suspension assembly (4) includes a base (41), a bracket (42), a vibration isolation bushing (43), a cover plate (44) and a locking member (45); the base (41) is fixedly connected to the longitudinal beam (11); the connecting bracket (22) is fixedly connected to the bracket (42); the cover plate (44) is arranged on a side of the bracket (42) away from the base (41); the vibration isolation bushing (43) is arranged between the base (41) and the bracket (42) and between the bracket (42) and the cover plate (44); and the locking member (45) passes through the cover plate (44) and the bracket (42) and is fixedly connected to the base (41).

8. The tractor chassis according to any one of claims 1 to 7, characterized in that: The vehicle frame (1) further comprises an integrated bracket (5), the integrated bracket (5) being located above the vehicle frame (1), the integrated bracket (5) comprising a pipe beam (51) and a trailer valve bracket (53), a mounting plate (54), an air filter bracket (55) and a pipe harness bracket (56) mounted on the pipe beam (51), the two ends of the pipe beam (51) being respectively connected to the two longitudinal beams (11), the trailer valve bracket (53), the mounting plate (54), the air filter bracket (55) and the pipe harness bracket (56) being arranged at intervals along the extension direction of the pipe beam (51).

9. The tractor chassis according to claim 8, characterized in that: The tube beam (51) is an "X"-shaped structure.

10. A tractor, characterized in that: The tractor chassis comprises the tractor chassis according to any one of claims 1 to 9.

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