A natural gas underpan arrangement and vehicle

Abstract

The utility model belongs to the technical field of automobile chassis, disclose a natural gas chassis arrangement structure and vehicle. The natural gas chassis arrangement structure, include: frame, cab, power assembly, front axle assembly, drive axle, battery module and natural gas supply module, frame includes left side longeron, right side longeron and crossbeam who sets up in parallel interval, the front axle assembly and drive axle between left side longeron and right side longeron are sequentially set from front to back along the length direction of left side longeron and right side longeron, battery module is fixedly connected in right side longeron, natural gas supply module is fixedly connected in left side longeron and / or right side longeron. The natural gas chassis arrangement structure and vehicle through side hanging type arrangement scheme, have increased the arrangement space of natural gas chassis arrangement structure, make natural gas chassis arrangement structure can be according to fuel type difference, can choose and dress LNG liquefied natural gas supply module or CNG compressed natural gas supply module, satisfy large volume, many gas bottle space demand, improve the versatility of natural gas chassis arrangement structure.

Description

Technical Field

[0001] This utility model relates to the field of automotive chassis technology, and in particular to a natural gas chassis layout structure and vehicle. Background Technology

[0002] Natural gas is a clean and environmentally friendly fuel, producing relatively few pollutants when burned, which helps reduce vehicle exhaust emissions. At the same time, the cost of natural gas fuel is relatively stable, which can reduce vehicle operating costs to some extent. Therefore, more and more commercial vehicles are using natural gas as fuel.

[0003] Most current natural gas chassis designs are geared towards a single fuel type, such as liquefied natural gas (LNG) or compressed natural gas (CNG). Switching fuel types requires significant modifications to the chassis structure, including gas cylinder mounting interfaces and supply pipeline layouts. It is difficult to achieve compatibility between different fuel types through simple module replacement, thus limiting vehicle scalability. At the same time, different user groups have diverse requirements for the length of the cab assembly, which means that the same model needs to be configured differently based on different cab lengths. In addition, the placement of the gas cylinder assembly makes the space for component placement in the middle of the vehicle chassis tight, often requiring the development of dedicated parts for different configurations of the same model, resulting in low component interchangeability and increasing the product verification cycle. Utility Model Content

[0004] The purpose of this utility model is to provide a natural gas chassis layout structure and vehicle, which has a large layout space and can meet the different fuel needs of users.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] On one hand, a natural gas chassis layout structure is provided, including: a frame, a cab, a powertrain, a front axle assembly, a drive axle, a battery module, and a natural gas supply module. The frame includes a left longitudinal beam and a right longitudinal beam arranged in parallel and spaced apart. The front axle assembly and the drive axle are arranged sequentially from front to back along the length direction of the left and right longitudinal beams, and the front axle assembly and the drive axle are connected by a drive shaft. Rear wheel assemblies are provided at both ends of the drive axle. The cab is located above the front axle assembly, and the cab and the frame are fixedly connected by a suspension device. The powertrain is fixedly connected to the front axle assembly. The battery module is fixedly connected to the right longitudinal beam, and the natural gas supply module is fixedly connected to the left longitudinal beam and / or the right longitudinal beam.

[0007] Preferably, the natural gas supply module is an LNG supply module. The LNG supply module includes an LNG main gas cylinder, a gas cylinder support, a vaporizer, and a gas filter. The gas cylinder support is fixedly connected to the left longitudinal beam, the LNG main gas cylinder is fixedly installed on the gas cylinder support, the vaporizer is located between the bottom plate of the gas cylinder support and the LNG main gas cylinder, the gas filter is fixedly connected to the gas cylinder support, and the inlet and outlet water pipes of the vaporizer are both connected to the powertrain. The gas filter is connected to the LNG main gas cylinder and the powertrain through a gas pipe.

[0008] Preferably, the natural gas supply module also includes an LNG auxiliary cylinder and a cylinder connecting pipe. The LNG auxiliary cylinder is fixedly connected to the right longitudinal beam by a cylinder bracket, and the LNG auxiliary cylinder is connected to the LNG main cylinder and the vaporizer respectively by the cylinder connecting pipe.

[0009] Preferably, the natural gas supply module is a CNG supply module, and the natural gas chassis layout structure includes multiple CNG supply modules. One part of the CNG supply modules is fixedly connected to the left longitudinal beam, and another part of the CNG supply modules is fixedly connected to the right longitudinal beam.

[0010] Preferably, the CNG supply module includes a mounting frame, a protective cover, a clamp, and two CNG cylinders. The mounting frame is fixedly connected to the vehicle frame, the two CNG cylinders are fixedly connected to the mounting frame by the clamp, the protective cover covers the two CNG cylinders, and the protective cover is fixedly connected to the mounting frame.

[0011] Preferably, the natural gas chassis layout also includes a control box and multiple T-joints. The control box is fixedly connected to the left longitudinal beam and is located between the cab and the natural gas supply module. The control box is connected to multiple CNG cylinders one by one through multiple T-joints. The control box is connected to the powertrain through water pipes and gas pipes.

[0012] Preferably, the powertrain includes an engine and a transmission arranged sequentially from front to rear. The engine is located below the cab, and the engine and transmission are fixedly connected between the left and right longitudinal beams via a mounting device.

[0013] Preferably, the battery module includes a battery frame and a battery. The battery frame is fixedly connected to the right longitudinal beam, and the battery is disposed inside the battery frame. The natural gas chassis layout structure also includes a gas storage tank and an APU. The gas storage tank is used to store compressed air and is fixedly connected to the bottom plate of the battery frame. The APU is connected to the gas storage tank through a gas pipe and is fixedly connected to the rear side plate of the battery frame.

[0014] Preferably, the frame also includes a crossbeam disposed between the left longitudinal beam and the right longitudinal beam, and the front axle assembly, drive axle and crossbeam are arranged sequentially from front to back along the length of the frame, with a spare tire fixedly connected to the crossbeam, and the spare tire is located below the frame.

[0015] And / or, an air filter is fixedly connected to the left longitudinal beam, and the air filter is located on the rear side of the cab or the rear side of the front axle assembly;

[0016] And / or, a rear processor is fixedly connected to the underside of the chassis.

[0017] On the other hand, a vehicle is provided, which includes a natural gas chassis layout structure of any of the above-mentioned technical solutions.

[0018] The beneficial effects of this utility model are as follows: It provides a natural gas chassis layout structure and vehicle. The chassis of the natural gas chassis layout structure includes a left longitudinal beam and a right longitudinal beam arranged in parallel and spaced apart. The battery module is fixedly connected to the right longitudinal beam, and the natural gas supply module is fixedly connected to the left longitudinal beam and / or the right longitudinal beam. Through the side-mounted layout scheme, the layout space of the natural gas chassis layout structure is increased, so that the natural gas chassis layout structure can be equipped with LNG liquefied natural gas supply module or CNG compressed natural gas supply module according to different fuel types, to meet the space requirements of large volume and multiple gas cylinders, and improve the versatility of the natural gas chassis layout structure. Attached Figure Description

[0019] Figure 1 This is a front view of the natural gas chassis layout structure provided by this utility model;

[0020] Figure 2 This is a top view of the natural gas chassis layout structure provided in Embodiment 1 of this utility model;

[0021] Figure 3 This is a partial schematic diagram of the natural gas chassis layout structure provided in Embodiment 1 of this utility model;

[0022] Figure 4 This is a top view of the natural gas chassis layout structure provided in Embodiment 2 of this utility model;

[0023] Figure 5 This is a partial schematic diagram of the natural gas chassis layout structure provided in Embodiment 2 of this utility model.

[0024] In the picture: 2

[0025] 1. Chassis; 11. Left longitudinal beam; 12. Right longitudinal beam; 13. Front axle assembly; 14. Drive axle; 15. Drive shaft; 16. Rear wheel assembly;

[0026] 2. Cab; 3. Powertrain;

[0027] 4. LNG supply module; 41. LNG main cylinder; 42. LNG auxiliary cylinder; 43. Cylinder support; 44. Vaporizer; 45. Gas filter;

[0028] 5. CNG supply module; 51. Mounting bracket; 52. Protective cover; 53. Hoop; 54. CNG cylinder; 55. Control box; 56. T-connector;

[0029] 6. Battery module; 61. Battery frame; 62. Battery; 63. Gas tank; 64. APU;

[0030] 7. Spare tire; 8. Air filter; 9. After-treatment system; 10. Rear suspension. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0032] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between 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.

[0033] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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" and "second" are only used for distinction in description and have no special meaning.

[0035] Example 1:

[0036] On the one hand, please refer to Figures 1 to 3 This embodiment provides a natural gas chassis layout structure, including: a frame 1, a cab 2, a powertrain 3, a front axle assembly 13, a drive axle 14, a battery module 6, and a natural gas supply module. The frame 1 includes a left longitudinal beam 11 and a right longitudinal beam 12 arranged in parallel and spaced apart. The front axle assembly 13 and the drive axle 14 are arranged sequentially from front to back along the length direction of the left longitudinal beam 11 and the right longitudinal beam 12, and the front axle assembly 13 and the drive axle 14 are connected by a drive shaft 15. Rear wheel assemblies 16 are provided at both ends of the drive axle 14. The cab 2 is located above the front axle assembly 13, and the cab 2 and the frame 1 are fixedly connected by a suspension device. The powertrain 3 is fixedly connected to the front axle assembly 13. The battery module 6 is fixedly connected to the right longitudinal beam 12, and the natural gas supply module is fixedly connected to the left longitudinal beam 11 and / or the right longitudinal beam 12. This configuration, through a side-mounted arrangement, increases the layout space of the natural gas chassis structure. This allows the natural gas chassis structure to be equipped with either an LNG (liquefied natural gas) supply module or a CNG (compressed natural gas) supply module, depending on the fuel type, meeting the space requirements for large volumes and multiple gas cylinders, and improving the versatility of the natural gas chassis structure. Specifically, the drive axle 14 is fixed to the frame 1 via the rear suspension 10. A fan, radiator, intercooler, and condenser structure are located at the front of the engine, and the frontmost part of the frame 1 is a bumper.

[0037] Optionally, depending on user needs, the chassis 1 can be equipped with various types of cabs 2, such as narrow-body cabs, wide-body cabs, small extended cabs, and large extended cabs. The suspension devices can be airbag suspension devices, coil spring suspension devices, etc. The natural gas chassis layout structure has strong versatility.

[0038] Furthermore, the front axle assembly 13 is located below the cab 2 and is connected to the frame 1 via a leaf spring suspension. The compact structure frees up space on both sides of the frame 1, providing space for the installation of structures such as the battery module and the natural gas supply module.

[0039] Furthermore, the ground clearance of the natural gas chassis layout is 270mm-280mm, ensuring a certain height dimension while meeting regulatory requirements, so as to increase the cargo box volume and meet user needs.

[0040] Please refer to Figure 2 and Figure 3In this embodiment, the natural gas supply module is an LNG supply module 4. The LNG supply module 4 includes an LNG main cylinder 41, a cylinder support 43, a vaporizer 44, and a gas filter 45. The cylinder support 43 is fixedly connected to the left longitudinal beam 11. The LNG main cylinder 41 is fixedly installed on the cylinder support 43. The vaporizer 44 is located between the bottom plate of the cylinder support and the LNG main cylinder 41. The gas filter 45 is fixedly connected to the cylinder support 43. The inlet and outlet pipes of the vaporizer 44 are both connected to the power assembly 3. The gas filter 45 is connected to the LNG main cylinder 41 and the power assembly 3 through a gas pipe to achieve heating, filtration, and supply of liquefied natural gas. When the natural gas supply module is set to a single LNG cylinder, the left side is compactly arranged. Depending on the cylinder capacity requirements, various volume schemes such as 600L, 750L, 800L, and 1000L can be adopted. The right side is reserved for modification, and structures such as a water tank, toolbox, and oxygenator can be modified.

[0041] In some embodiments, the natural gas supply module further includes an LNG auxiliary cylinder 42 and a cylinder connecting pipe. The LNG auxiliary cylinder 42 is fixedly connected to the right longitudinal beam 12 via a cylinder bracket 43. The LNG auxiliary cylinder 42 is connected to the LNG main cylinder 41 and the vaporizer 44 via the cylinder connecting pipe. Preferably, the LNG auxiliary cylinder 42 and the LNG main cylinder 41 use a unified gas pipe interface. The natural gas chassis layout structure is highly integrated and modular. The cylinder connecting pipe allows the gas and the vaporizer 44 to heat water, reducing pipeline complexity and achieving a platform-based layout.

[0042] Optionally, the powertrain 3 includes an engine and a transmission arranged sequentially from front to rear. The engine is located below the cab 2, and the engine and transmission are fixedly connected between the left longitudinal beam 11 and the right longitudinal beam 12 via a suspension device. This arrangement reduces the number of components located on the left and right longitudinal beams 12, leaving space for the cargo box and increasing its length and volume.

[0043] Alternatively, please refer to Figure 2 The battery module includes a battery frame 61 and a battery 62. The battery frame 61 is fixedly connected to the right longitudinal beam 12, and the battery 62 is disposed inside the battery frame 61. The natural gas chassis layout also includes a gas storage tank 63 and an APU 64 (Air Processing Unit). The gas storage tank 63 is used to store compressed air and is fixedly connected to the bottom plate of the battery frame 61. The APU 64 is connected to the gas storage tank 63 through a gas pipe and is fixedly connected to the rear side plate of the battery frame 61. Specifically, the gas storage tank 63 is fixed below the battery 62 by a clamp 53, and the APU 64 is connected to the rear side of the battery 62 by a bracket.

[0044] Furthermore, the frame 1 also includes a crossbeam disposed between the left longitudinal beam 11 and the right longitudinal beam 12, and the front axle assembly 13, drive axle 14 (conceptual error, same as above) and crossbeam are arranged sequentially from front to back along the length of the frame 1. A spare tire 7 is fixedly connected to the crossbeam, and the spare tire 7 is located below the frame 1; an air filter 8 is fixedly connected to the left longitudinal beam 11, and the air filter 8 is located behind the cab 2 or behind the front axle assembly 13; an after-processor 9 is fixedly connected to the lower part of the frame 1. This arrangement greatly reduces the number of parts arranged on the left longitudinal beam 11 and the right longitudinal beam 12, leaving more space for the arrangement of the gas supply module and the modification of structures such as water tanks and toolboxes.

[0045] On the other hand, a vehicle is provided, which includes the aforementioned natural gas chassis layout. Specifically, the vehicle is a commercial vehicle, and the wheelbase of the vehicle can be 5300mm, 5800mm, or 7100mm. Depending on the wheelbase of the vehicle, the length of the driveshaft 15 varies, and the number of driveshafts can be 2 or 3.

[0046] Example 2:

[0047] Please refer to Figure 1 , Figure 4 and Figure 5 The structure of this embodiment is roughly the same as that of Embodiment 1. The only difference is that in this embodiment, the natural gas supply module is a CNG supply module 5. The natural gas chassis layout structure includes multiple CNG supply modules 5. A portion of the CNG supply modules 5 are fixedly connected to the left longitudinal beam 11, and another portion of the CNG supply modules 5 are fixedly connected to the right longitudinal beam 12.

[0048] Specifically, the CNG supply module 5 includes a mounting frame 51, a protective cover 52, a clamp 53, and two CNG cylinders 54. The mounting frame 51 is fixedly connected to the vehicle frame 1. The two CNG cylinders 54 are fixedly connected to the mounting frame 51 by the clamp 53. The protective cover 52 covers the two CNG cylinders 54 and is fixedly connected to the mounting frame 51.

[0049] In this embodiment, the natural gas chassis layout structure is provided with two CNG supply modules 5, which are fixedly connected to the left longitudinal beam 11 and the right longitudinal beam 12, respectively. In other embodiments, the natural gas chassis layout structure may also be provided with three or four CNG supply modules 5.

[0050] Furthermore, the natural gas chassis layout also includes a control box 55 and multiple T-joints 56. The control box 55 is fixedly connected to the left longitudinal beam 11 and is located between the cab 2 and the natural gas supply module. The control box 55 is connected one-to-one with the CNG cylinders 54 of the multiple CNG supply modules 5 through multiple T-joints 56. The control box 55 is connected to the powertrain 3 through water pipes and gas pipes to realize the heating and supply of CNG fuel. According to user needs, the CNG cylinders 54 can adopt various volumes such as 180L, 220L, and 260L.

[0051] The natural gas chassis layout structure provided by this utility model can maintain a completely uniform arrangement of all chassis components except for the natural gas supply module, ensuring a high degree of integration and modularity in the chassis layout, reserving space for user modifications, and leveraging the clean energy advantages of natural gas vehicles to further enhance product competitiveness.

[0052] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A natural gas chassis layout structure, comprising: The frame (1) includes a left longitudinal beam (11) and a right longitudinal beam (12) arranged in parallel at intervals; A front axle assembly (13) and a drive axle (14) are arranged sequentially from front to back along the length direction of the left longitudinal beam (11) and the right longitudinal beam (12). The front axle assembly (13) and the drive axle (14) are connected by a drive shaft (15). Rear wheel assemblies (16) are provided at both ends of the drive axle (14). The cab (2) is located above the front axle assembly (13), and the cab (2) and the frame (1) are fixedly connected by a suspension device; The powertrain (3) is fixedly connected to the front axle assembly (13); The natural gas chassis arrangement structure is characterized in that it further includes a battery module (6) and a natural gas supply module, wherein the battery module (6) is fixedly connected to the right longitudinal beam (12), and the natural gas supply module is fixedly connected to the left longitudinal beam (11) and / or the right longitudinal beam (12).

2. The natural gas chassis layout structure according to claim 1, characterized in that, The natural gas supply module is an LNG supply module (4). The LNG supply module (4) includes an LNG main gas cylinder (41), a gas cylinder support (43), a vaporizer (44), and a gas filter (45). The gas cylinder support (43) is fixedly connected to the left longitudinal beam (11). The LNG main gas cylinder (41) is fixedly installed on the gas cylinder support (43). The vaporizer (44) is located between the bottom plate of the gas cylinder support (43) and the LNG main gas cylinder (41). The gas filter (45) is fixedly connected to the gas cylinder support (43). The water inlet pipe and the water return pipe of the vaporizer (44) are both connected to the power assembly (3). The gas filter (45) is connected to the LNG main gas cylinder (41) and the power assembly (3) through a gas pipe.

3. The natural gas chassis layout structure according to claim 2, characterized in that, The natural gas supply module also includes an LNG auxiliary gas cylinder (42) and a gas cylinder connecting pipe. The LNG auxiliary gas cylinder (42) is fixedly connected to the right longitudinal beam (12) through the gas cylinder bracket (43). The LNG auxiliary gas cylinder (42) is connected to the LNG main gas cylinder (41) and the vaporizer (44) respectively through the gas cylinder connecting pipe.

4. The natural gas chassis layout structure according to claim 1, characterized in that, The natural gas supply module is a CNG supply module (5). The natural gas chassis layout structure includes multiple CNG supply modules (5). A portion of the CNG supply modules (5) are fixedly connected to the left longitudinal beam (11), and another portion of the CNG supply modules (5) are fixedly connected to the right longitudinal beam (12).

5. The natural gas chassis layout structure according to claim 4, characterized in that, The CNG supply module (5) includes a mounting frame (51), a protective cover (52), a clamp (53), and two CNG cylinders (54). The mounting frame (51) is fixedly connected to the vehicle frame (1). The two CNG cylinders (54) are fixedly connected to the mounting frame (51) by the clamp (53). The protective cover (52) covers the two CNG cylinders (54) and is fixedly connected to the mounting frame (51).

6. The natural gas chassis layout structure according to claim 5, characterized in that, The natural gas chassis layout structure also includes a control box (55) and multiple T-joints (56). The control box (55) is fixedly connected to the left longitudinal beam (11) and is located between the cab (2) and the natural gas supply module. The control box (55) is connected to the CNG cylinders (54) of the multiple CNG supply modules (5) one by one through multiple T-joints (56). The control box (55) is connected to the powertrain (3) through water pipes and gas pipes.

7. The natural gas chassis layout structure according to any one of claims 1-6, characterized in that, The powertrain (3) includes an engine and a transmission arranged sequentially from front to back. The engine is located below the cab (2), and the engine and transmission are fixedly connected between the left longitudinal beam (11) and the right longitudinal beam (12) by a suspension device.

8. The natural gas chassis layout structure according to any one of claims 1-6, characterized in that, The battery module (6) includes a battery frame (61) and a battery (62). The battery frame (61) is fixedly connected to the right longitudinal beam (12). The battery (62) is disposed inside the battery frame (61). The natural gas chassis arrangement structure also includes a gas storage tank (63) and an APU (64). The gas storage tank (63) is used to store compressed air. The gas storage tank (63) is fixedly connected to the bottom plate of the battery frame (61). The APU (64) is connected to the gas storage tank (63) through a gas pipe. The APU (64) is fixedly connected to the rear side plate of the battery frame (61).

9. The natural gas chassis layout structure according to any one of claims 1-6, characterized in that, The frame (1) also includes a crossbeam disposed between the left longitudinal beam (11) and the right longitudinal beam (12), and the front axle assembly (13), the drive axle (14) and the crossbeam are arranged sequentially from front to back along the length of the frame (1). A spare tire (7) is fixedly connected to the crossbeam and the spare tire (7) is located below the frame (1). And / or, the left longitudinal beam (11) is fixedly connected to an air filter (8), which is located on the rear side of the cab (2) or the rear side of the front axle assembly (13); And / or, a post-processor (9) is fixedly connected to the lower part of the frame (1).

10. A vehicle, characterized in that, The vehicle includes the natural gas chassis layout structure as described in any one of claims 1-9.

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