Commercial vehicle chassis and vehicle

Abstract

The invention provides a commercial vehicle chassis and a vehicle, and relates to the technical field of vehicle systems. The first gas cylinder assembly is connected with the frame, and the first gas cylinder assembly is arranged on the first side of the frame; the second gas cylinder assembly is connected with the frame, the second gas cylinder assembly is arranged on the second side of the frame, and the first side and the second side of the frame are oppositely arranged; the fender assembly is connected with the frame, a mounting space is formed among part of the fender assembly, the first gas cylinder assembly and the second gas cylinder assembly, the mounting space is used for mounting a target assembly, and the target assembly at least comprises an oil tank and a pressure reducing valve. The requirement for high endurance is met, meanwhile, extra supports and connecting pieces are reduced, and the problem that a commercial vehicle chassis in the prior art is difficult to meet the requirements for high endurance and component compatibility at the same time is solved.

Description

Technical Field

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

[0002] Currently, due to differences in wheelbase, drive type, gas cylinder type and volume, the layout of LNG commercial vehicles is not modular and universal. The whole vehicle system solution needs to be modularly arranged to be simple and efficient, reduce the number of NPIs, lower costs, and fully meet users' needs for long-range and low-cost.

[0003] Existing patented technology, patent application number: CN220947555U, entitled: "An LNG Tractor Chassis," describes a chassis layout for an LNG tractor with dual side-mounted gas cylinders and dual rear-mounted gas cylinders. The gas cylinders arranged on the chassis include a dual rear-mounted gas cylinder assembly, a first side-mounted gas cylinder assembly, and a second side-mounted gas cylinder assembly. While meeting the front turning radius of the trailer, this technical solution increases the total gas cylinder volume of the vehicle by increasing the number of gas cylinders installed, thereby improving the vehicle's range. The chassis also features a lightweight design, employing a single-layer frame and a plastic battery frame assembly to reduce vehicle weight and further increase range.

[0004] While this existing patented solution utilizes dual side-mounted gas cylinders and dual back-mounted gas cylinders, increasing the number of gas cylinders to a certain extent, its overall vehicle system layout is relatively low in modularity. The capacity of the dual side-mounted LNG cylinders is 550L on the left side of the chassis and 450L on the right side, making it inadequate for transport scenarios requiring longer range. The left-side layout of the chassis is as follows: Side-mounted gas cylinder assembly 1 is positioned behind the rear fender of the front axle, and the battery frame assembly is positioned between gas cylinder assembly 1 and the front fender of the axle. The right-side layout is as follows: The post-processor assembly is positioned behind the rear fender of the front axle, and Side-mounted gas cylinder assembly 2 is positioned behind the post-processor assembly. If the dual-side mounted gas cylinders adopt 600L+500L or 700L+600L to meet the requirements of long-range driving, the volume of the left gas cylinder is increased from 550L to 600L or 700L, and the X-dimension of the gas cylinder assembly is lengthened, resulting in the battery frame assembly behind the gas cylinder assembly needing to be simultaneously arranged backward. The interface positions of the high-current wiring harness, chassis wiring harness, and other battery frame connections are not uniform, and the modularity and universality of the chassis wiring harness solution are poor. The number of NPI parts increases, and the design, manufacturing, procurement, and maintenance costs are high. At the same time, this patented technical solution does not modularly consider the layout of other chassis components, such as the layout of the fuel-powered independent heater small fuel tank and the gas-powered independent heater pressure reducing valve. It also does not simultaneously consider the layout positions of the reserved solution components, which is likely to generate a large number of NPI parts and increase costs.

[0005] To address the above issues, no effective solutions have been proposed so far. Summary of the Invention

[0006] The main purpose of the present invention is to provide a commercial vehicle chassis and a vehicle to solve the problem that the existing commercial vehicle chassis is difficult to simultaneously meet the requirements of high endurance and component compatibility.

[0007] To achieve the above-mentioned objectives, according to one aspect of the present invention, a commercial vehicle chassis is provided, comprising: a vehicle frame; a first gas cylinder assembly, the first gas cylinder assembly being connected to the vehicle frame and being arranged on a first side of the vehicle frame; a second gas cylinder assembly, the second gas cylinder assembly being connected to the vehicle frame and being arranged on a second side of the vehicle frame, the first side and the second side of the frame being arranged opposite to each other; a fender assembly, the fender assembly being connected to the vehicle frame, a mounting space being formed between a portion of the fender assembly and the first and second gas cylinder assemblies, the mounting space being used for mounting a target component, wherein the target component comprises at least a fuel tank and a pressure reducing valve.

[0008] Furthermore, the installation space includes a first installation space and a second installation space. The first installation space is formed between part of the fender assembly and the first gas cylinder assembly, and the first installation space is used to install the fuel tank. The second installation space is formed between part of the fender assembly and the second gas cylinder assembly, and the second installation space is used to install the pressure reducing valve.

[0009] Furthermore, the fender assembly includes: a first fender assembly, the first fender assembly is connected to the frame, the first fender assembly is arranged at the rear section of the frame, the first fender assembly and the first gas cylinder assembly are arranged on the same side, and a first installation space is formed between the first fender assembly and the first gas cylinder assembly; a second fender assembly, the second fender assembly is connected to the frame, the second fender assembly is arranged at the rear section of the frame, the second fender assembly and the second gas cylinder assembly are arranged on the same side, and a second installation space is formed between the second fender assembly and the second gas cylinder assembly; a third fender assembly, the third fender assembly is connected to the frame, and the third fender assembly is arranged at the front section of the frame.

[0010] Furthermore, the commercial vehicle chassis includes a back gas cylinder assembly, which includes: a back gas cylinder, there are at least two back gas cylinders; a connecting plate, the connecting plate is connected to the frame; a rear bracket, the back gas cylinder is connected to the connecting plate through the rear bracket; a support bracket, the support bracket is connected to the frame, the rear bracket is connected to the support bracket, and the connecting plate is connected to the support bracket; a wiring harness mounting plate, the wiring harness mounting plate is connected to the support bracket; a rear gas cylinder pipeline, the first end of the rear gas cylinder pipeline is connected to the back gas cylinder, and the second end of the rear gas cylinder pipeline is used to connect to the engine.

[0011] Furthermore, the first gas cylinder assembly includes: a first gas cylinder; a first bracket, the first gas cylinder is connected to the frame through the first bracket; a first gas cylinder pipeline, one end of the first gas cylinder pipeline is connected to the first gas cylinder, and the other end of the first gas cylinder pipeline is connected to the rear gas cylinder pipeline.

[0012] Furthermore, the second gas cylinder assembly includes: a second gas cylinder; a second bracket, the second gas cylinder is connected to the frame through the second bracket; a second gas cylinder pipeline, one end of the second gas cylinder pipeline is connected to the second gas cylinder, and the other end of the second gas cylinder pipeline is connected to the rear gas cylinder pipeline.

[0013] Furthermore, the volume of the first gas cylinder is 500L to 700L, and / or the volume of the second gas cylinder is 500L to 700L, and / or the volume of the back gas cylinder is 1000L to 1500L.

[0014] Furthermore, the commercial vehicle chassis includes: a battery frame assembly, the battery frame assembly is connected to the vehicle frame, and the battery frame assembly is arranged between the third fender assembly and the first gas cylinder assembly.

[0015] Furthermore, the commercial vehicle chassis includes: a post-processor assembly, the post-processor assembly is connected to the vehicle frame, and the post-processor assembly is arranged between the third fender assembly and the second gas cylinder assembly.

[0016] According to another aspect of the present invention, a vehicle is provided, comprising a commercial vehicle chassis, wherein the commercial vehicle chassis is the commercial vehicle chassis described above.

[0017] By applying the technical solution of the present invention, the space between the fender assembly and the first gas cylinder assembly and the second gas cylinder assembly is used to form an installation space, thereby realizing a modular layout of the commercial vehicle and the chassis, so that the fuel and gas system components can be installed tightly and orderly. In order to meet the high endurance requirement, that is, when the first gas cylinder assembly and the second gas cylinder assembly use gas cylinders with larger volumes, additional brackets and connectors are reduced, thereby achieving a simple and efficient layout of the entire vehicle product, reducing the vehicle's own weight and manufacturing cost, and thus solving the problem that the existing commercial vehicle chassis is difficult to simultaneously meet the requirements of high endurance and component compatibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 A schematic structural diagram of a first embodiment of a commercial vehicle chassis according to the present invention is shown;

[0020] Figure 2 A schematic structural diagram of a second embodiment of a commercial vehicle chassis according to the present invention is shown;

[0021] Figure 3 A schematic structural diagram of a third embodiment of a commercial vehicle chassis according to the present invention is shown;

[0022] Figure 4FIG. 1 is a schematic structural diagram of a fourth embodiment of a commercial vehicle chassis according to the present invention.

[0023] The above drawings include the following reference numerals:

[0024] 10. Frame;

[0025] 20. First gas cylinder assembly;

[0026] 21. First gas cylinder;

[0027] 22. First bracket;

[0028] 23. First gas cylinder pipeline;

[0029] 30. Second gas cylinder assembly;

[0030] 31. Second gas cylinder;

[0031] 32. Second bracket;

[0032] 33. Second gas cylinder pipeline;

[0033] 34. Protective cover;

[0034] 40. Mudguard assembly;

[0035] 41. First fender assembly;

[0036] 42. Second fender assembly;

[0037] 50. Installation space;

[0038] 51. First installation space;

[0039] 52. Second installation space;

[0040] 60. Back gas cylinder assembly;

[0041] 61. Back gas cylinder;

[0042] 62. Connecting plate; 620. First connecting plate; 621. Second connecting plate;

[0043] 63. Rear bracket; 631. Back gas cylinder strap; 632. Strap fixing bracket;

[0044] 64. Support bracket;

[0045] 641, gas cylinder support bracket;

[0046] 642, first diagonal brace;

[0047] 643, support frame;

[0048] 644, second diagonal brace;

[0049] 65. Wire harness mounting plate;

[0050] 66. Rear gas cylinder pipeline;

[0051] 70. Battery frame assembly;

[0052] 80. Post-processor assembly. DETAILED DESCRIPTION

[0053] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0054] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0055] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, so that the embodiments of the present application described herein can, for example, be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0056] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in a variety of different forms and should not be interpreted as being limited to the embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of this application thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art. In the accompanying drawings, for the sake of clarity, the thickness of layers and regions may be exaggerated, and the same reference numerals are used to represent the same devices, and thus their descriptions will be omitted.

[0057] In the current LNG (liquefied natural gas) commercial vehicle sector, with the market's increasing emphasis on long driving range and cost control, the overall design and layout of the vehicle has become a focus for manufacturers. Especially for LNG tractors, chassis layout solutions often struggle to achieve the desired level of modularity and universality due to factors such as wheelbase, drive type, and cylinder type and volume. This situation not only increases the number of new components to be developed but also drives up design, manufacturing, and maintenance costs. Furthermore, given user demand for longer driving range, the limitations of cylinder volume in traditional layout solutions have become a key bottleneck that urgently needs to be overcome.

[0058] Combine Figures 1 to 4 In a specific embodiment of the present invention, a commercial vehicle chassis is provided.

[0059] Specifically, the commercial vehicle chassis includes a frame 10, a first gas cylinder assembly 20, a second gas cylinder assembly 30 and a fender assembly 40. The first gas cylinder assembly 20 is connected to the frame 10 and is arranged on a first side of the frame 10; the second gas cylinder assembly 30 is connected to the frame 10 and is arranged on a second side of the frame 10, and the first side and the second side of the frame 10 are arranged opposite to each other; the fender assembly 40 is connected to the frame 10, and an installation space 50 is formed between part of the fender assembly 40 and the first gas cylinder assembly 20 and the second gas cylinder assembly 30. The installation space 50 is used to install target components, wherein the target components include at least a fuel tank and a pressure reducing valve.

[0060] In this embodiment, the frame 10 is the load-bearing skeleton of a commercial vehicle, designed to house major components such as the engine, cab, and wheels. It also provides sufficient strength and rigidity to support the vehicle's weight and the gas cylinder assembly. The first gas cylinder assembly 20, a side-mounted LNG cylinder assembly, is mounted on the left side of the frame 10 and includes the cylinder, associated mounting structures, and connecting piping. Side-mounted gas cylinder assemblies are typically designed for ease of maintenance and rapid refueling, while minimizing the impact on the vehicle's interior space. The second gas cylinder assembly 30 is similar to the first gas cylinder assembly 20, but is mounted on the right side of the frame 10. The arrangement of the two gas cylinder assemblies is intended to balance the vehicle's weight distribution and enhance driving stability. The fender assembly 40 not only protects the frame 10 and the gas cylinders from splashing mud, water, and rocks, but also, together with the first and second gas cylinder assemblies 20 and 30, forms an installation space 50, which can be used to install other important components, such as the fuel tank and pressure reducing valve. The fuel tank is a fuel-powered, independent heater tank, and the pressure reducing valve is a gas-powered, independent heater pressure reducing valve. Mounting space 50, formed between the gas cylinder assembly and the fender assembly, is used to install components such as the fuel tank and pressure reducing valve. This design helps optimize the chassis layout, more rationalizes the installation location of key components, and reduces the complexity of wiring harnesses and piping, thereby reducing manufacturing costs and improving maintenance efficiency.

[0061] The technical solution of the present invention utilizes the space between the fender assembly 40 and the first and second gas cylinder assemblies 20 and 30 to form an installation space 50, achieving a modular layout for commercial vehicles and chassis, allowing for compact and orderly installation of fuel and gas system components. To meet high range requirements, when the first and second gas cylinder assemblies 20 and 30 utilize larger-volume gas cylinders, conventional designs often require the addition of additional brackets and connectors to ensure the stability and safety of the gas cylinders. However, this solution, through the pre-designed collaborative structure of the fender assembly 40 and the first and second gas cylinder assemblies 20 and 30, cleverly utilizes the installation space 50 to house the fuel tank and pressure reducing valve, eliminating the need for additional brackets and connectors. This simplifies the overall layout and reduces manufacturing complexity, thereby resolving the problem of existing commercial vehicle chassis struggling to simultaneously meet high range and component compatibility.

[0062] Furthermore, the installation space 50 includes a first installation space 51 and a second installation space 52. The first installation space 51 is formed between part of the fender assembly 40 and the first gas cylinder assembly 20, and the first installation space 51 is used to install the fuel tank. The second installation space 52 is formed between part of the fender assembly 40 and the second gas cylinder assembly 30, and the second installation space 52 is used to install the pressure reducing valve.

[0063] In this embodiment, by forming a first installation space 51 between the fender assembly 40 and the first gas cylinder assembly 20, effective integration of the fuel tank is achieved. This not only maximizes the use of the limited space on the side of the frame 10, but also maintains a safe distance between the fuel tank and the first gas cylinder assembly 20 to avoid mutual interference in extreme situations. At the same time, the close position of the fuel tank helps to simplify the piping layout of the fuel system, reduce the risk of leakage, and improve the overall reliability of the system. By forming a second installation space 52 between the fender assembly 40 and the second gas cylinder assembly 30, a reasonable arrangement of the pressure reducing valve is achieved. The pressure reducing valve is generally an important safety and control component in the LNG system. Placing it in the second installation space 52 helps to optimize the gas supply path, reduce pressure loss, and improve the efficiency of the LNG system. In summary, by carefully planning the first installation space 51 and the second installation space 52, not only the layout of the fuel tank and the pressure reducing valve is optimized, but also the modularization and standardization of the chassis system are promoted. When the first gas cylinder assembly 20 and the second gas cylinder assembly 30 use gas cylinders with larger volumes, additional brackets and connectors are reduced, making the overall vehicle product layout simple and efficient, reducing the vehicle's own weight and manufacturing costs, and having a significant effect on improving the overall performance and market competitiveness of LNG commercial vehicles.

[0064] Furthermore, the fender assembly 40 includes: a first fender assembly 41, a second fender assembly 42 and a third fender assembly, the first fender assembly 41 is connected to the frame 10, the first fender assembly 41 is arranged at the rear section of the frame 10, the first fender assembly 41 is arranged on the same side as the first gas cylinder assembly 20, and a first installation space 51 is formed between the first fender assembly 41 and the first gas cylinder assembly 20; the second fender assembly 42 is connected to the frame 10, the second fender assembly 42 is arranged at the rear section of the frame 10, the second fender assembly 42 is arranged on the same side as the second gas cylinder assembly 30, and a second installation space 52 is formed between the second fender assembly 42 and the second gas cylinder assembly 30; the third fender assembly is connected to the frame 10, and the third fender assembly is arranged at the front section of the frame 10.

[0065] In this embodiment, the first fender assembly 41 and the second fender assembly 42 are both mid-rear axle fender assemblies, while the third fender assembly is a front axle rear fender assembly. The first fender assembly 41 is mounted on the left side of the vehicle frame 10, while the second fender assembly 42 is mounted on the right side of the vehicle frame 10. By designing the first fender assembly 41 and the second fender assembly 42 as mid-rear axle fender assemblies, effective protection and space utilization are achieved around the gas cylinder assembly. The mid-rear axle typically bears the majority of the vehicle's weight. Placing the fender assembly there not only provides additional protection but also allows this space to be utilized to optimize the layout of the fuel tank and pressure relief valve, reducing the encroachment on the vehicle interior and improving the vehicle's cargo capacity and passenger comfort. The third fender assembly is a front axle rear fender assembly. Its location helps direct splashes and dust from the front wheels, protecting the front and side electrical systems from corrosion and extending the vehicle's lifespan.

[0066] Furthermore, the commercial vehicle chassis includes a back gas cylinder assembly 60, which includes: a back gas cylinder 61, a connecting plate 62, a rear bracket 63, a support bracket 64, a wiring harness mounting plate 65 and a rear gas cylinder pipeline 66, and there are at least two back gas cylinders 61; the connecting plate 62 is connected to the frame 10; the back gas cylinder 61 is connected to the connecting plate 62 through the rear bracket 63; the support bracket 64 is connected to the frame 10, the rear bracket 63 is connected to the support bracket 64, and the connecting plate 62 is connected to the support bracket 64; the wiring harness mounting plate 65 is connected to the support bracket 64; the first end of the rear gas cylinder pipeline 66 is connected to the back gas cylinder 61, and the second end of the rear gas cylinder pipeline 66 is used to communicate with the engine.

[0067] In this embodiment, by providing at least two back-mounted gas cylinders 61, the storage capacity of liquefied gas is greatly increased. Furthermore, when a larger capacity of the back-mounted gas cylinder 61 is required, the pre-designed fender assembly 40, the coordinated structure of the first gas cylinder assembly 20 and the second gas cylinder assembly 30 cleverly utilizes the first installation space 51 and the second installation space 52 to accommodate the fuel tank and pressure reducing valve, eliminating the need for additional brackets and connectors. This simplifies the overall layout and reduces manufacturing complexity. The back-mounted gas cylinder 61 is connected to the vehicle frame 10 using a connecting plate 62, achieving a secure connection between the gas cylinder assembly and the vehicle structure, ensuring the stability and safety of the gas cylinder during vehicle travel. The connection between the rear bracket 63, the connecting plate 62, and the vehicle frame 10 provides dual protection, strengthening the fixing effect of the back-mounted gas cylinder 61. The rear bracket 63 not only provides additional support for the gas cylinder, but also works in conjunction with the connecting plate 62 to ensure that the gas cylinder will not loosen or shift even on bumpy roads or in accidents, thereby enhancing the impact resistance of the overall structure. The support bracket 64 forms a solid bridge between the vehicle frame 10 and the rear gas cylinder 61. It not only supports the weight of the rear gas cylinder but also, through its connection to the rear bracket 63, distributes the load, reducing localized stress on the vehicle frame and improving the durability of the structure. The connection between the wiring harness mounting plate 65 and the support bracket 64 ensures the neatness and safety of the electrical wiring, preventing direct contact between the wiring harness and the gas cylinder, thus preventing wear and leakage, and facilitating wiring layout and maintenance inspections. The rear gas cylinder line 66 serves as a fuel delivery channel. Its head end is tightly connected to the rear gas cylinder 61, and its tail end is connected to the engine fuel system, ensuring a continuous fuel supply and normal engine operation.

[0068] Through this meticulous structural design and component arrangement, the backpack gas cylinder assembly 60 is not only physically and securely integrated into the vehicle frame, but also seamlessly integrated into the vehicle's fuel supply system. This demonstrates the professionalism and thoroughness of the LNG commercial vehicle chassis design. This design not only meets the requirements for long driving range, but also balances operational safety and easy maintenance.

[0069] Combine Figure 2As shown, in this embodiment, the commercial vehicle chassis includes a back gas cylinder assembly 60, which includes: a back gas cylinder 61, a connecting plate 62, a rear bracket 63, a support bracket 64, a wiring harness mounting plate 65 and a rear gas cylinder pipeline 66, and there are at least two back gas cylinders 61; the connecting plate 62 includes a first connecting plate 620 and a second connecting plate 621, the back gas cylinder 61 is connected to the first connecting plate 620, and the first connecting plate 620 is connected to the frame 10 through the second connecting plate 621; the rear bracket 63 includes a back gas cylinder hoop 631 and a hoop fixing bracket 632, and the back gas cylinder 61 is connected to the back gas cylinder hoop The belt 631 and the strap fixing bracket 632 are connected to the connecting plate 62. The support bracket 64 includes a gas cylinder support bracket 641, a first diagonal brace 642, a support frame 643, and a second diagonal brace 644. The gas cylinder support bracket 641 is connected to the rear bracket 63, the gas cylinder support bracket 641 is connected to the first connecting plate 620, the first diagonal brace 642 is connected to the gas cylinder support bracket 641, the support frame 643 is connected to the first connecting plate 620, the support frame 643 is connected to the vehicle frame 10, the support frame 643 is connected to the gas cylinder support bracket 641, and the second diagonal brace 644 is connected to the support frame 643. The wiring harness mounting plate 65 is connected to at least one of the gas cylinder support bracket 641 and the gas cylinder support bracket 641. The rear gas cylinder pipeline 66 has a first end connected to the back gas cylinder 61, and a second end of the rear gas cylinder pipeline 66 is used to connect to the engine.

[0070] Through this modular design, the rear-mounted gas cylinder assembly 60 not only carries large volumes of liquefied gas, but also ensures safety and stability. It also reduces vehicle weight and manufacturing costs, improving its economical efficiency and market competitiveness. This design approach effectively addresses the challenges faced by traditional LNG commercial vehicles in pursuing longer driving ranges: how to increase gas cylinder capacity while maintaining vehicle flexibility, safety, and inter-component compatibility.

[0071] Furthermore, the first gas cylinder assembly 20 includes a first gas cylinder 21, a first bracket 22 and a first gas cylinder pipeline 23. The first gas cylinder 21 is connected to the frame 10 through the first bracket 22; one end of the first gas cylinder pipeline 23 is connected to the first gas cylinder 21, and the other end of the first gas cylinder pipeline 23 is connected to the rear gas cylinder pipeline 66.

[0072] Combine Figure 2 and Figure 4As shown, in this embodiment, the first bracket 22 includes a first band and a first bracket, ensuring a secure installation of the first gas cylinder assembly 20 while reducing the need for additional support structures, simplifying the overall vehicle layout, and lowering manufacturing costs. The synergistic effect of the first gas cylinder 21, the first bracket 22, and the first gas cylinder pipeline 23 not only effectively supports and secures the gas cylinder, but also ensures a clear and reliable fuel transfer path between the gas cylinder and the engine. This modular design not only simplifies the overall vehicle layout and eliminates unnecessary brackets and connectors, thereby reducing vehicle weight and manufacturing costs, but also improves the convenience of component replacement and maintenance.

[0073] Furthermore, the second gas cylinder assembly 30 includes a second gas cylinder 31, a second bracket 32 ​​and a second gas cylinder pipeline 33. The second gas cylinder 31 is connected to the frame 10 through the second bracket 32; one end of the second gas cylinder pipeline 33 is connected to the second gas cylinder 31, and the other end of the second gas cylinder pipeline 33 is connected to the rear gas cylinder pipeline 66.

[0074] Combine Figure 3 and Figure 4 As shown, in this embodiment, the second gas cylinder assembly 30 also includes a protective cover 34, which is connected to the second gas cylinder 31. The second bracket 32 ​​includes a second strap and a second bracket, which ensures the stable installation of the second gas cylinder assembly 30, reduces the need for additional support structures, simplifies the overall vehicle layout, and reduces manufacturing costs. Through this design, the second gas cylinder assembly 30 forms an organic whole with the frame 10 and the back gas cylinder assembly 60. This not only increases fuel storage space, but also, through the connection between the second gas cylinder pipeline 33 and the rear gas cylinder pipeline 66, achieves efficient fuel management and supply between multiple gas cylinders, further enhancing the vehicle's endurance and operating efficiency. At the same time, the modular bracket design ensures that the second gas cylinder assembly 30 can be securely installed, reduces the additional burden on the frame 10 structure, and reduces the vehicle's own weight, which helps improve the vehicle's economy and safety.

[0075] Furthermore, the volume of the first gas cylinder 21 is 500L to 700L, the volume of the second gas cylinder 31 is 500L to 700L, and the volume of the back gas cylinder 61 is 1000L to 1500L. The larger volume design (500L to 700L) of the first gas cylinder 21 and the second gas cylinder 31, combined with the ultra-large volume (1000L to 1500L) of the back gas cylinder 61, significantly increases the vehicle's fuel storage capacity, thereby improving the vehicle's endurance, transportation efficiency, and customer satisfaction. This solution effectively solves the problem in the existing technology that commercial vehicles find it difficult to simultaneously take into account endurance, cost control, and safety performance through the carefully designed large-volume gas cylinder module, combined with modular layout and universal design.

[0076] Furthermore, the commercial vehicle chassis includes a battery frame assembly 70, which is connected to the vehicle frame 10 and disposed between the third fender assembly and the first gas cylinder assembly 20. The modular design of the battery frame assembly 70 enables it to be connected to the vehicle frame as a standalone unit. Regardless of the drive type or wheelbase, the position and interface standards of this assembly remain unchanged, simplifying component adaptation and production processes between different vehicle models while also facilitating subsequent maintenance and upgrades.

[0077] Furthermore, the commercial vehicle chassis includes an after-processor assembly 80, which is connected to the vehicle frame 10 and positioned between the third fender assembly and the second gas cylinder assembly 30. The after-processor assembly 80 is connected to the vehicle frame 10 via a dedicated bracket. This connection ensures the stability of the after-processor during vehicle operation and prevents damage from vibration or collision. The selection and design of the connection point must take into account factors such as the exhaust pipe's routing, thermal expansion, and ease of maintenance to ensure the long-term, reliable operation of the after-processor assembly.

[0078] In another embodiment of the present invention, a vehicle is provided, including a commercial vehicle chassis, where the commercial vehicle chassis is the commercial vehicle chassis in the above embodiment.

[0079] It should be noted that the commercial vehicle chassis described in the embodiments of this application is suitable for LNG vehicles, i.e., vehicles that use liquefied natural gas as fuel. This arrangement allows LNG commercial vehicles to effectively utilize the space on both sides of the vehicle to install large gas cylinder assemblies, while ensuring the rational layout of key components such as the fuel tank and pressure reducing valve, thereby improving the vehicle's overall performance and economy. This design concept embodies the concepts of modularity and universality, allowing for flexible application across different vehicle models and configurations, reducing the design and manufacture of new parts and, consequently, lowering the cost of the entire vehicle system.

[0080] Specifically, the commercial vehicle chassis includes a frame 10, a first gas cylinder assembly 20, a second gas cylinder assembly 30 and a fender assembly 40. The first gas cylinder assembly 20 is connected to the frame 10 and is arranged on a first side of the frame 10; the second gas cylinder assembly 30 is connected to the frame 10 and is arranged on a second side of the frame 10, and the first side and the second side of the frame 10 are arranged opposite to each other; the fender assembly 40 is connected to the frame 10, and an installation space 50 is formed between part of the fender assembly 40 and the first gas cylinder assembly 20 and the second gas cylinder assembly 30. The installation space 50 is used to install target components, wherein the target components include at least a fuel tank and a pressure reducing valve.

[0081] In this embodiment, the vehicle frame 10 is the load-bearing skeleton of a commercial vehicle, designed to house major components such as the engine, cab, and wheels. It also provides sufficient strength and rigidity to support the vehicle's weight and the gas cylinder assembly. The first gas cylinder assembly 20 is a side-mounted LNG cylinder assembly, mounted on the left side of the frame. It includes the cylinder, associated mounting structures, and connecting piping. Side-mounted gas cylinder assemblies are typically designed for easy maintenance and quick refueling, while minimizing the impact on the vehicle's interior space. The second gas cylinder assembly 30 is similar to the first gas cylinder assembly 20, but is mounted on the right side of the frame. The arrangement of the two gas cylinder assemblies is designed to balance the vehicle's weight distribution and enhance driving stability. The fender assembly 40 not only protects the frame and gas cylinders from splashing mud, water, and rocks, but also forms a mounting space 50 with the gas cylinder assembly, which can be used to install other important components such as the fuel tank and pressure reducing valve. The fuel tank is a fuel-powered, independent heater tank, and the pressure reducing valve is a gas-powered, independent heater pressure reducing valve. The mounting space 50 is formed between the gas cylinder assembly and the fender assembly and is used to install components such as the fuel tank and pressure reducing valve. This design helps optimize the chassis layout, makes the installation positions of key components more reasonable, and reduces the complexity of wiring harnesses and pipelines, thereby reducing manufacturing costs and improving maintenance efficiency.

[0082] By applying the technical solution of the present invention, the space between the fender assembly 40 and the first gas cylinder assembly 20 and the second gas cylinder assembly 30 is utilized to form an installation space 50, thereby realizing a modular layout of commercial vehicles and chassis, so that the fuel and gas system components can be installed tightly and orderly. In order to meet the high endurance requirement, that is, when the first gas cylinder assembly 20 and the second gas cylinder assembly 30 use gas cylinders with larger volumes, additional brackets and connectors are reduced, thereby achieving a concise and efficient layout of the entire vehicle product, reducing the vehicle's own weight and manufacturing cost, and thus solving the problem that the existing commercial vehicle chassis is difficult to simultaneously meet the requirements of high endurance and component compatibility.

[0083] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0084] 1) A modular layout approach achieves standardized design and unified layout for the battery frame assembly 70, post-processor assembly 80, and first and second gas cylinder assemblies 20 and 30. Regardless of the vehicle's wheelbase or drivetrain configuration, the location and interface standards of these key components remain consistent, reducing the number of parts, lowering design, manufacturing, and maintenance costs, and improving the overall system's integration and versatility.

[0085] 2) By combining dual side-mounted gas cylinders with dual backpack gas cylinders, the present invention significantly increases the vehicle's LNG fuel storage capacity. The capacity of the first and second gas cylinders 21 and 31 ranges from 500L to 700L, while the capacity of the backpack gas cylinder 61 ranges from 1000L to 1500L. This configuration effectively solves the problem of fuel shortages in long-range driving scenarios and meets the transportation industry's high demand for continuous driving capability.

[0086] 3) The secure connection between the gas cylinder assembly and the vehicle frame 10, along with the rational layout of the various components, ensures vehicle stability and safety during driving. Furthermore, the modular design, with reserved component locations, such as the placement of the fuel tank for the fuel-powered independent heater and the gas-powered independent heater pressure reducing valve, avoids potential safety hazards associated with future adjustments or component additions.

[0087] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0088] In addition to the above, it should be noted that references to "one embodiment," "another embodiment," "an embodiment," and the like in this specification refer to specific features, structures, or characteristics described in conjunction with that embodiment as included in at least one embodiment generally described in this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in conjunction with any embodiment, it is intended that such feature, structure, or characteristic, when implemented in conjunction with other embodiments, also falls within the scope of the present invention.

[0089] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0090] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A commercial vehicle chassis, characterized in that: include: Frame (10); a first gas cylinder assembly (20), the first gas cylinder assembly (20) being connected to the vehicle frame (10), and the first gas cylinder assembly (20) being arranged on a first side of the vehicle frame (10); a second gas cylinder assembly (30), the second gas cylinder assembly (30) being connected to the vehicle frame (10), the second gas cylinder assembly (30) being arranged on a second side of the vehicle frame (10), the first side and the second side of the vehicle frame (10) being arranged opposite to each other; A fender assembly (40) is connected to the vehicle frame (10), and a mounting space (50) is formed between a portion of the fender assembly (40) and the first gas cylinder assembly (20) and the second gas cylinder assembly (30). The mounting space (50) is used to mount a target assembly, wherein the target assembly includes at least a fuel tank and a pressure reducing valve.

2. The commercial vehicle chassis according to claim 1, characterized in that: The installation space (50) includes a first installation space (51) and a second installation space (52), wherein the first installation space (51) is formed between a portion of the fender assembly (40) and the first gas cylinder assembly (20), and the first installation space (51) is used to install the oil tank, and the second installation space (52) is formed between a portion of the fender assembly (40) and the second gas cylinder assembly (30), and the second installation space (52) is used to install the pressure reducing valve.

3. The commercial vehicle chassis according to claim 2, characterized in that: The fender assembly (40) includes: a first fender assembly (41), the first fender assembly (41) being connected to the vehicle frame (10), the first fender assembly (41) being arranged at a rear section of the vehicle frame (10), the first fender assembly (41) being arranged on the same side as the first gas cylinder assembly (20), and forming a first installation space (51) between the first fender assembly (41) and the first gas cylinder assembly (20); a second fender assembly (42), the second fender assembly (42) being connected to the vehicle frame (10), the second fender assembly (42) being arranged at a rear section of the vehicle frame (10), the second fender assembly (42) being arranged on the same side as the second gas cylinder assembly (30), and a second installation space (52) being formed between the second fender assembly (42) and the second gas cylinder assembly (30); A third fender assembly is connected to the vehicle frame (10), and the third fender assembly is arranged at the front section of the vehicle frame (10).

4. The commercial vehicle chassis according to any one of claims 1 to 3, characterized in that The commercial vehicle chassis includes a back gas cylinder assembly (60), and the back gas cylinder assembly (60) includes: Back-mounted gas cylinders (61), wherein there are at least two back-mounted gas cylinders (61); A connecting plate (62), the connecting plate (62) being connected to the vehicle frame (10); A rear bracket (63), wherein the back gas cylinder (61) is connected to the connecting plate (62) via the rear bracket (63); A support bracket (64), the support bracket (64) is connected to the vehicle frame (10), the rear bracket (63) is connected to the support bracket (64), and the connecting plate (62) is connected to the support bracket (64); a wiring harness mounting plate (65), the wiring harness mounting plate (65) being connected to the support bracket (64); A rear gas cylinder pipeline (66), wherein a first end of the rear gas cylinder pipeline (66) is in communication with the back gas cylinder (61), and a second end of the rear gas cylinder pipeline (66) is used to be in communication with the engine.

5. The commercial vehicle chassis according to claim 4, characterized in that: The first gas cylinder assembly (20) comprises: a first gas cylinder (21); a first bracket (22), wherein the first gas cylinder (21) is connected to the vehicle frame (10) via the first bracket (22); A first gas cylinder pipeline (23), one end of the first gas cylinder pipeline (23) is connected to the first gas cylinder (21), and the other end of the first gas cylinder pipeline (23) is connected to the rear gas cylinder pipeline (66).

6. The commercial vehicle chassis according to claim 5, characterized in that: The second gas cylinder assembly (30) comprises: a second gas cylinder (31); a second bracket (32), wherein the second gas cylinder (31) is connected to the vehicle frame (10) via the second bracket (32); A second gas cylinder pipeline (33), one end of the second gas cylinder pipeline (33) is connected to the second gas cylinder (31), and the other end of the second gas cylinder pipeline (33) is connected to the rear gas cylinder pipeline (66).

7. The commercial vehicle chassis according to claim 6, characterized in that The volume of the first gas cylinder (21) is 500L to 700L, and / or, The volume of the second gas cylinder (31) is 500L to 700L, and / or, The volume of the back gas cylinder (61) is 1000L to 1500L.

8. The commercial vehicle chassis according to claim 3, characterized in that: The commercial vehicle chassis comprises: A battery frame assembly (70) is connected to the vehicle frame (10), and the battery frame assembly (70) is arranged between the third fender assembly and the first gas cylinder assembly (20).

9. The commercial vehicle chassis according to claim 8, characterized in that: The commercial vehicle chassis comprises: A post-processor assembly (80) is connected to the vehicle frame (10), and the post-processor assembly (80) is arranged between the third fender assembly and the second gas cylinder assembly (30).

10. A vehicle comprising a commercial vehicle chassis, characterized in that: The commercial vehicle chassis is the commercial vehicle chassis according to any one of claims 1 to 9.

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