6*2 rear support truck chassis arrangement structure and vehicle

Abstract

The utility model relates to the field of truck chassis arrangement, in particular to a 6 * 2 rear support truck chassis arrangement structure and a vehicle, which comprise an exhaust system, a storage battery box, a urea box, an oil tank, a front suspension, a rear suspension, a front axle, a drive axle, a fuel oil coarse filter, an air processing unit, a front axle air reservoir, a rear axle air reservoir, a pressure maintaining air reservoir and a spare wheel carrier, the front axle comprises a first axle, the drive axle comprises a second axle, and the support axle comprises a third axle; the axle distance between the first axle and the second axle ranges from 7000 mm to 7500 mm; the axle distance between the second axle and the third axle ranges from 1000 mm to 2000 mm. The structure can be improved on the basis of a 4 * 2 truck structure, the bearing capacity of the whole truck is improved, the stability of the whole truck is improved, and benefits are increased.

Description

Technical Field

[0001] This utility model relates to the field of truck chassis layout, specifically to a 6×2 rear-support truck chassis layout structure and vehicle. Background Technology

[0002] Currently, my country's macroeconomic situation is relatively good, and residents' living standards are gradually improving, leading to a continuous increase in demand for express delivery and freight. However, with the increasing efforts to control overloading, the shortcomings of medium- and long-distance standard-load transportation in the freight market are becoming increasingly apparent. Existing truck chassis with the same wheelbase mostly have a 4×2 drive configuration (where the vehicle has four wheels, two of which are drive wheels), resulting in low front and rear axle loads, small single-trip freight volume, and low profitability. Utility Model Content

[0003] The purpose of this utility model is to provide a 6×2 rear-support truck chassis layout structure, which can be improved on the basis of the 4×2 truck structure to increase the overall load-bearing capacity, improve the overall stability of the vehicle, and increase profits.

[0004] Another objective of this utility model is to provide a vehicle that can be improved based on the 4×2 cargo truck structure to increase the overall load-bearing capacity, improve the overall stability of the vehicle, and increase profits.

[0005] The technical solution of this utility model is implemented as follows:

[0006] A 6×2 rear-support truck chassis layout structure includes an exhaust system, a battery box, a urea tank, a fuel tank, a front suspension, a rear suspension, a front axle, a drive axle, a fuel pre-filter, an air treatment unit, a front axle air reservoir, a rear axle air reservoir, a pressure-holding air reservoir, a spare tire carrier, and a support axle. The front axle includes a first axle, the drive axle includes a second axle, and the support axle includes a third axle.

[0007] The wheelbase between the first axle and the second axle ranges from 7000 to 7500 mm;

[0008] The wheelbase between the second axle and the third axle is in the range of 1000 to 2000 mm.

[0009] Furthermore, the battery box is located on the left side of the vehicle frame and behind the front axle, the exhaust system is located on the right side of the vehicle frame and behind the front axle, the urea tank is located on the right side of the vehicle frame and behind the exhaust system, and the fuel tank is located on the right side of the vehicle frame and between the urea tank and the drive axle.

[0010] Furthermore, space is reserved for the installation of the upper structure between the exhaust system and the urea tank, as well as behind the battery box.

[0011] Furthermore, the fuel pre-filter is arranged on the battery box, the air treatment unit is arranged inside the left longitudinal beam of the frame and between the first and second crossbeams, and the front axle air reservoir is arranged inside the left longitudinal beam of the frame and between the second and third crossbeams.

[0012] Furthermore, the rear axle air reservoir is arranged inside the left longitudinal beam of the frame and between the third and fourth crossbeams, and the pressure-holding air reservoir is arranged inside the left longitudinal beam of the frame and between the fourth crossbeam and the aircraft beam.

[0013] The spare tire rack is positioned behind the second tail beam and in front of the tail beam.

[0014] Furthermore, the wheelbase between the first axle and the second axle is 7100mm, the wheelbase between the second axle and the third axle is 1400mm, the front overhang of the vehicle is 1450mm, and the rear overhang is 2000mm.

[0015] Furthermore, the exhaust system adopts a "small U-shaped" structural design.

[0016] Furthermore, the shock absorber is arranged at the front axle, with its upper end fixed to the vehicle frame by a bracket and its lower end fixed to the front suspension by bolts.

[0017] Furthermore, the front suspension adopts a 4-leaf spring structure design, and the leaf spring stiffness of the front suspension is 330 N / mm and the free arc height is 124 mm. The rear suspension adopts a 5-leaf spring combined with a balance suspension structure design, and the leaf spring stiffness of the rear suspension is 3000 N / mm and the free arc height is 52 mm.

[0018] A vehicle, the vehicle being a 6×2 rear-supported cargo truck, the vehicle including the 6×2 rear-supported cargo truck chassis layout structure.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] This application provides a 6×2 rear-support truck chassis layout structure, based on the 4×2 truck structure, with the overall vehicle length remaining unchanged. The wheelbase between the first axle and the second axle ranges from 7000 to 7500 mm, and the wheelbase between the second axle and the third axle ranges from 1000 to 2000 mm. Compared with the original 4×2 truck structure, the wheelbase is lengthened, and a support axle with only load-bearing function is added, thereby controlling the overall vehicle cost, increasing the overall vehicle load-bearing capacity, and improving the overall vehicle stability. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the chassis layout structure of the 6×2 rear-support cargo truck of this utility model;

[0023] Figure 2 This is a left view of the chassis layout structure of the 6×2 rear-support truck of this utility model;

[0024] Figure 3 This is a right view of the chassis layout structure of the 6×2 rear-support truck of this utility model;

[0025] Figure 4 This is a left view of the vehicle of this utility model;

[0026] Figure 5 This is a right view of the vehicle of this utility model.

[0027] In the picture:

[0028] 1-Cab; 2-Front axle; 3-Exhaust system; 4-Urea tank;

[0029] 5-Fuel tank; 6-Chassis; 7-Drive axle; 8-Support axle;

[0030] 9-Spare tire rack; 10-Battery box; 11-Crossbeam;

[0031] 12-Fuel pre-filter; 13-Air preparation unit; 14-Second crossbeam;

[0032] 15-Front axle air reservoir; 16-Three crossbeams; 17-Rear axle air reservoir;

[0033] 18-Four crossbeams; 19-Pressure-holding air tank; 20-Left longitudinal beam of the frame;

[0034] 21-Aircraft beam; 22-Tail second crossbeam; 23-Tail beam;

[0035] 24-Front suspension; 25-Rear suspension; 26-Shock absorber. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0038] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0039] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0040] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0041] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0042] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0043] Example 1

[0044] Reference Figures 1-5 This embodiment provides a 6×2 rear-support truck chassis layout structure, including an exhaust system 3, a battery box 10, a urea tank 4, a fuel tank 5, a front suspension 24, a rear suspension 25, a front axle 2, a drive axle 7, a fuel pre-filter 12, an air treatment unit 13, a front axle air tank 15, a rear axle air tank 17, a pressure-holding air tank 19, a spare tire carrier 9, and a support axle 8. The front axle 2 includes a first axle, the drive axle 7 includes a second axle, and the support axle 8 includes a third axle.

[0045] The wheelbase between the first axle and the second axle ranges from 7000 to 7500 mm;

[0046] The wheelbase between the second axle and the third axle is in the range of 1000 to 2000 mm.

[0047] In a preferred embodiment of this invention, the wheelbase between the first axle and the second axle is 7100mm, the wheelbase between the second axle and the third axle is 1400mm, and the front overhang of the vehicle is 1450mm and the rear overhang is 2000mm.

[0048] Here is an explanation:

[0049] The wheelbase of the first and second axles is 7100mm: This refers to the horizontal distance between the center lines of the front axle (first axle) and the middle axle (second axle) of the vehicle, which is 7100mm.

[0050] The wheelbase of the second and third axles is 1400mm: This refers to the horizontal distance between the center lines of the vehicle's middle axle (second axle) and the rear axle (third axle) being 1400mm.

[0051] Compared to the existing 4×2 cargo truck structure, the significance of this wheelbase layout is that the longer front two axle spacing (7100mm) is usually used to improve vehicle stability and cargo space, while the short rear axle spacing (1400mm) can balance steering performance or meet the requirements of a 7-drive axle layout.

[0052] 1450mm front overhang: The horizontal distance from the frontmost part of the vehicle (such as the bumper) to the center line of the front axle is 1450mm. A shorter front overhang can improve the approach angle and reduce the risk of scraping when driving on complex road surfaces.

[0053] 2000mm rear overhang: The horizontal distance from the rearmost part of the vehicle (such as the rear of the cargo box) to the center line of the rear axle is 2000mm. A longer rear overhang may be used to expand the cargo box capacity, but attention should be paid to axle load distribution to avoid overloading.

[0054] This solution provides a 6×2 rear-support truck chassis layout structure, which adopts a 6×2 drive configuration (i.e., the vehicle has a total of six wheels, two of which are drive wheels). The short rear axle spacing (1400mm) can be used to reduce the turning radius or to adapt to a center-axle structure.

[0055] The long front axle spacing (7100mm) of this design is suitable for vans or car carriers, increasing cargo box length and loading efficiency. The short rear axle spacing (1400mm) and reasonable rear overhang (2000mm) balance maneuverability and load requirements, making it suitable for urban delivery or paved road transportation.

[0056] This solution adopts a new layout:

[0057] The battery box 10 is located on the left side of the frame 6 and behind the front axle 2. The exhaust system 3 is located on the right side of the frame 6 and behind the front axle 2. The urea tank 4 is located on the right side of the frame 6 and 900mm behind the exhaust system 3. The fuel tank 5 is located on the right side of the frame 6 and between the urea tank 4 and the drive axle 7. Space is reserved between the exhaust system 3 and the urea tank 4, and behind the battery box 10, for the installation of superstructures. The fuel pre-filter 12 is mounted on the battery box 10. The air treatment unit 13 is located inside the left longitudinal beam 20 of the frame, behind the battery box 10, and between the first crossbeam 11 and the second crossbeam 14. The front axle air reservoir 15 is located inside the left longitudinal beam 20 of the frame, between the second crossbeam 14 and the third crossbeam 16. The rear axle air reservoir 17 is located inside the left longitudinal beam 20 of the frame and between the third crossbeam 16 and the fourth crossbeam 18. The pressure-holding air reservoir 19 is located inside the left longitudinal beam 20 of the frame and between the fourth crossbeam 18 and the aircraft beam 21. The spare tire carrier 9 is located after the second rear crossbeam 22 and before the rear beam 23.

[0058] In summary, this solution optimizes the chassis layout by readjusting the positions of the exhaust system 3, urea tank 4, fuel tank 5, battery box 10, fuel pre-filter 12, air treatment unit 13, front axle air tank 15, rear axle air tank 17, and pressure-holding air tank 19 on the chassis 6. This facilitates the installation of superstructure accessories and solves the current problems of insufficient load capacity, low user per-trip freight revenue, and insufficient reserved space for superstructure in 4×2 cargo trucks.

[0059] In this embodiment, the exhaust system 3 adopts a "small U-shaped" structural design. "Small U-shaped" refers to the compact U-shaped bend design of the physical layout of the exhaust pipe or after-processor (such as SCR, DPF and other components) in the vehicle after-treatment system, which is mainly used to optimize the exhaust flow path and adapt to the overall vehicle space.

[0060] The exhaust system 3 adopts a "small U-shaped" structural design, which has the following advantages:

[0061] Space optimization: By using U-shaped bends to avoid chassis mechanical components (such as drive shafts and fuel tank 5), it can adapt to complex chassis structures.

[0062] Emission efficiency: Shorten the distance from exhaust to aftertreatment, improve the efficiency of catalytic reduction reaction (such as SCR system), and meet China VI emission standards.

[0063] Lightweight: The compact design reduces pipe length and weight, thus lowering overall vehicle energy consumption.

[0064] Easy maintenance: The centralized U-shaped layout facilitates the inspection and replacement of the post-processor module.

[0065] In summary, the small U-shaped exhaust system 3 improves emission treatment efficiency and vehicle compatibility through its compact physical layout.

[0066] In this embodiment, the front suspension 24 adopts a 4-leaf spring structure design, and the leaf spring stiffness of the front suspension 24 is 330 N / mm and the free arc height is 124 mm. The rear suspension 25 adopts a 5-leaf spring combined with a balance suspension structure design, and the leaf spring stiffness of the rear suspension 25 is 3000 N / mm and the free arc height is 52 mm.

[0067] The following is a detailed description of the front suspension 24:

[0068] 4-Leaf Spring: Composed of 4 steel leaf springs, balancing load-bearing capacity and lightweight design. Suitable for front axle loads (such as engine, cab 1), providing adequate support.

[0069] Stiffness 330N / mm: The lower stiffness design improves vibration filtering performance under no-load or light-load conditions, enhancing driving comfort.

[0070] Free arc height 124mm: The high natural arc ensures sufficient preload after installation, maintains ground clearance when unloaded, and avoids excessive suspension sag.

[0071] The following is a detailed description of the rear suspension 25:

[0072] 5-leaf spring + balance suspension: 5-leaf spring enhances load-bearing capacity and adapts to heavy load requirements of the rear axle; balance suspension (such as balance beam) connects the left and right leaf springs, balances the load on both sides, reduces the risk of unilateral overload, and improves stability under complex road conditions.

[0073] Stiffness 3000N / mm: High stiffness can cope with the weight of the cargo, reduce deformation, and maintain the stability of the vehicle body, but sacrifices some ride comfort.

[0074] Free camber height 52mm: The low camber design ensures that the suspension still has sufficient compression travel when fully loaded to prevent bottoming out damage.

[0075] The front suspension 24 and the rear suspension 25 have a clear division of labor: the front suspension 24 focuses on handling and comfort, while the rear suspension 25 focuses on load-bearing capacity and durability, which is in line with the load distribution characteristics of trucks that are lighter in the front and heavier in the rear.

[0076] Reasonableness of stiffness difference: The front suspension has low stiffness (330N / mm) to filter road impacts, while the rear suspension has high stiffness (3000N / mm) to prevent collapse under heavy loads, which meets physical requirements.

[0077] Free arc height matching scenario: the front overhang high arc height maintains the unloaded posture, and the rear overhang low arc height adapts to the full load compression, optimizing the performance under all working conditions.

[0078] In summary, this suspension solution, through differentiated design, prioritizes comfort in the front suspension (few leaf springs, low stiffness, high camber) and load-bearing capacity in the rear suspension (multiple leaf springs, balanced structure, high stiffness, low camber), precisely matching the functional requirements of the front and rear axles of a truck, while balancing unloaded economy and heavy-load reliability.

[0079] In this embodiment, the fuel tank 5 can be either a 400L fuel tank 5 or a 600L fuel tank 5.

[0080] Shock absorbers 26 are installed at two locations on the front axle. The upper end of the shock absorber 26 is fixed to the frame 6 by a bracket, and the lower end is fixed to the front suspension 24 by bolts.

[0081] Example 2

[0082] A vehicle, the vehicle being a 6×2 rear-supported cargo truck, wherein the 6×2 rear-supported cargo truck chassis layout structure is described in the vehicle.

[0083] The beneficial effects of the technical solution of this utility model are:

[0084] 1. The chassis layout of this 6×2 rear-support truck has been redesigned, and the positions of the exhaust system 3, urea tank 4, fuel tank 5, battery box 10, fuel pre-filter 12, air treatment unit 13, front axle air tank 15, rear axle air tank 17, and pressure-holding air tank 19 on the frame 6 have been adjusted to optimize the chassis layout and facilitate the installation of upper body accessories.

[0085] 2. The 6×2 rear-support cargo truck chassis layout structure is based on the 4×2 cargo truck structure. The overall length of the vehicle remains unchanged, but the wheelbase is lengthened, and a support axle 8 with only load-bearing function is added. This controls the overall vehicle cost, increases the overall vehicle load-bearing capacity, and improves the overall vehicle stability.

[0086] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

[0087] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A 6x2 rear support truck chassis arrangement, comprising an exhaust system (3), a battery box (10), a urea tank (4), an oil tank (5), a front suspension (24), a rear suspension (25), a front axle (2), a drive axle (7), a fuel coarse filter (12), an air handling unit (13), a front axle air spring (15), a rear axle air spring (17), a pressure maintaining air spring (19), a spare tire rack (9), characterized in that, The front axle (2) comprises a first axle, the drive axle (7) comprises a second axle, and the support axle (8) comprises a third axle; The wheelbase of the first axle and the second axle ranges from 7000 mm to 7500 mm; The wheelbase of the second axle and the third axle ranges from 1000 mm to 2000 mm.

2. The 6x2 rear drive axle truck chassis arrangement of claim 1, wherein, The battery box (10) is arranged on the left side of the frame (6) and behind the front axle (2), the exhaust system (3) is arranged on the right side of the frame (6) and behind the front axle (2), the urea tank (4) is arranged on the right side of the frame (6) and behind the exhaust system (3), and the oil tank (5) is arranged on the right side of the frame (6) and between the urea tank (4) and the drive axle (7).

3. The 6x2 rear drive axle truck chassis layout of claim 1, wherein, An upper mounting space is reserved between the exhaust system (3) and the urea tank (4) and behind the battery box (10).

4. The 6x2 rear drive axle truck chassis layout of claim 1, wherein, The fuel coarse filter (12) is arranged on the battery box (10), the air treatment unit (13) is arranged inside the left side frame (20) and between a cross beam (11) and a second cross beam (14), and the front axle air spring (15) is arranged inside the left side frame (20) and between the second cross beam (14) and a third cross beam (16).

5. The 6x2 rear drive axle truck chassis layout of claim 1, wherein, The rear axle air spring (17) is arranged inside the left side frame (20) and between the third cross beam (16) and a fourth cross beam (18), and the pressure maintaining air spring (19) is arranged inside the left side frame (20) and between the fourth cross beam (18) and an airplane beam (21). The spare tire rack (9) is arranged behind the second tail cross beam (22) and in front of a tail beam (23).

6. The 6x2 rear drive axle truck chassis arrangement of claim 1, wherein, The wheelbase of the first axle and the second axle is 7100 mm, the wheelbase of the second axle and the third axle ranges from 1400 mm, the front suspension of the whole vehicle is 1450 mm, and the rear suspension is 2000 mm.

7. The 6x2 rear drive axle truck chassis arrangement of claim 1, wherein, The exhaust system (3) adopts a "small U-shaped" structure design.

8. The 6x2 rear drive axle truck chassis arrangement of claim 1, wherein, A shock absorber (26) is arranged at the front axle (2), the upper end of the shock absorber (26) is fixed on the frame (6) through a support, and the lower end of the shock absorber (26) is fixed on the front suspension (24) through a bolt.

9. The 6x2 rear drive axle truck chassis arrangement of claim 1, wherein, The front suspension (24) adopts a structure design of four leaf springs, the leaf spring stiffness of the front suspension (24) is 330 N / mm, and the free arc height is 124 mm, the rear suspension (25) adopts a structure design of five leaf springs combined with a balance suspension, the leaf spring stiffness of the rear suspension (25) is 3000 N / mm, and the free arc height is 52 mm.

10. A vehicle characterized by comprising: The vehicle is a 6x2 rear support truck, and the vehicle comprises the 6x2 rear support truck chassis arrangement structure in any one of claims 1-9.

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