Chassis assembly and vehicle

Abstract

The application relates to a chassis assembly and a vehicle. The chassis assembly comprises a frame assembly, a battery assembly and a lifting assembly. The frame assembly encloses a containing cavity. The battery assembly is connected to the frame assembly and located inside the containing cavity. The lifting assembly is connected to the frame assembly. The lifting assembly comprises a power mechanism and an execution mechanism which are spaced apart along a first direction, and a transmission mechanism connected between the power mechanism and the execution mechanism. The power mechanism and the execution mechanism are located on two sides of the battery assembly along the first direction. The power mechanism is located inside the containing cavity. Part of the transmission mechanism is located outside the containing cavity and on one side of the battery assembly along a second direction. The first direction intersects the second direction. The chassis assembly and the vehicle provided by the application have a low center of gravity, thereby having good rollover resistance.

Description

Technical Field

[0001] This application relates to the field of mining dump truck technology, and more particularly to a chassis assembly and vehicle. Background Technology

[0002] In the process of transporting materials in mines, dump trucks are frequently used. Due to the complex terrain, rugged roads, and numerous gullies in mining areas, it is necessary to improve the anti-rollover capabilities of these dump trucks during transport. Summary of the Invention

[0003] The chassis assembly and vehicle provided in this application embodiment have a low center of gravity, thereby having good anti-rollover capability.

[0004] In a first aspect, embodiments of this application provide a chassis assembly, including: The frame assembly encloses and forms a receiving cavity; The battery assembly is connected to the frame assembly and located inside the receiving cavity; A lifting assembly is connected to the vehicle frame assembly. The lifting assembly includes a power mechanism and an actuator spaced apart along a first direction, and a transmission mechanism connected between the power mechanism and the actuator. The power mechanism and the actuator are located on both sides of the battery assembly along the first direction. The power mechanism is located inside the receiving cavity, and a portion of the transmission mechanism is located outside the receiving cavity and along a second direction on one side of the battery assembly, wherein the first direction intersects the second direction.

[0005] In some embodiments, the lifting assembly includes a hydraulic structure, the power mechanism includes a hydraulic pump, the transmission mechanism includes a transmission pipeline, and the actuator includes a lifting cylinder; The projection of a portion of the transmission pipe structure in the third direction is located outside the projection of the battery assembly in the third direction, and the third direction, the second direction, and the first direction intersect each other.

[0006] In some embodiments, a plurality of hydraulic pumps are provided, and the plurality of hydraulic pumps are spaced apart along the second direction; The transmission mechanism includes a hydraulic oil tank, and the transmission pipeline includes a plurality of independently set first pipelines, which are connected to a plurality of hydraulic pumps, and the plurality of first pipelines are connected in parallel to the hydraulic oil tank.

[0007] In some embodiments, a power assembly is also included, which is connected to the frame assembly and located on the side of the power mechanism away from the battery assembly along the first direction. The power assembly includes a plurality of power sources arranged side by side along the second direction, and the output ends of the plurality of power sources are correspondingly connected to a plurality of hydraulic pumps. The power assembly includes a power oil tank connected to the power source. The power oil tank and the hydraulic oil tank are both connected to the frame assembly and are located on both sides outside the receiving cavity along the second direction. The projection of the power oil tank in the second direction overlaps with the projection of the hydraulic oil tank in the second direction.

[0008] In some embodiments, the frame assembly includes a first longitudinal beam, a second longitudinal beam, and a first crossbeam connected between the first longitudinal beam and the second longitudinal beam. The first longitudinal beam and the second longitudinal beam both extend along a first direction and are spaced apart in a second direction. The first crossbeam extends along the second direction. The power assembly and the lifting assembly are located on both sides of the first crossbeam along the first direction. The frame assembly also includes a mounting beam extending along the second direction, with its two ends connected to the first longitudinal beam and the second longitudinal beam, respectively. A plurality of power sources are connected side-by-side to the first crossbeam along the second direction, and a plurality of hydraulic pumps are connected side-by-side to the mounting beam along the second direction.

[0009] In some embodiments, a plurality of lifting cylinders are provided, and the plurality of lifting cylinders are all connected to the frame assembly and located on both sides outside the receiving cavity along the second direction; The transmission mechanism further includes a flow-diverting structure connected to the hydraulic pump. The transmission pipeline includes multiple independently configured second pipelines, which are connected to multiple lifting cylinders respectively. The multiple second pipelines are connected in parallel to the flow-diverting structure.

[0010] In some embodiments, the frame assembly includes a first longitudinal beam, a second longitudinal beam, and a second crossbeam connecting the first longitudinal beam and the second longitudinal beam, wherein the first longitudinal beam and the second longitudinal beam both extend along the first direction and are spaced apart in the second direction, and the second crossbeam extends along the second direction; The second crossbeam includes a first sub-beam and a second sub-beam spaced apart along the third direction. The projection of the first sub-beam in the third direction is offset from the projection of the second sub-beam in the third direction. The current shunt structure is installed on the first sub-beam, and a portion of the battery assembly structure is connected to the second sub-beam.

[0011] In some embodiments, a first cantilever beam protrudes from the side of the first longitudinal beam toward the second longitudinal beam, and a second cantilever beam protrudes from the side of the second longitudinal beam toward the first longitudinal beam. A portion of the battery assembly is connected to the first cantilever beam and the second cantilever beam. The first cantilever beam and the second cantilever beam are both spaced apart from the power mechanism in the first direction.

[0012] In some embodiments, the chassis assembly further includes a heat dissipation assembly located along the first direction on the side of the second sub-beam opposite to the battery assembly; The second sub-beam has a first mounting structure on the side facing the power mechanism, and a portion of the battery assembly is connected to the first mounting structure; the second sub-beam has a second mounting structure on the side facing the heat dissipation assembly, and a portion of the heat dissipation assembly is connected to the second mounting structure.

[0013] Secondly, embodiments of this application provide a vehicle including the aforementioned chassis assembly.

[0014] According to the chassis assembly and vehicle provided in this application, the chassis assembly includes a frame assembly, a battery assembly, and a lifting assembly. The frame assembly encloses a receiving cavity. The lifting assembly includes a power mechanism and an actuator spaced apart along a first direction, and a transmission mechanism connecting the power mechanism and the actuator. The lifting assembly is used to perform lifting actions, thereby enabling the vehicle's self-unloading function. The battery assembly can electrically drive the vehicle to meet the vehicle's hybrid drive requirements and ensure the vehicle's power. Both the power mechanism and the battery assembly are located inside the receiving cavity. The power mechanism and the actuator are located on both sides of the battery assembly along the first direction. In order to create a larger space in the chassis assembly, in this embodiment, the position of the transmission mechanism is adjusted, with part of the transmission mechanism located outside the receiving cavity and on one side of the battery assembly along a second direction, so that a certain space is formed between the power mechanism and the actuator, thereby installing the battery assembly between the power mechanism and the actuator. This allows the battery assembly to be installed in the chassis assembly, lowering the installation position of the battery assembly, lowering the overall center of gravity of the vehicle, and improving the stability of the vehicle when driving on rough roads. Attached Figure Description

[0015] The features, advantages, and technical effects of exemplary embodiments of this application will now be described with reference to the accompanying drawings.

[0016] Figure 1 A first axonometric structural schematic diagram of a chassis assembly provided for some embodiments of this application; Figure 2 A top view of a chassis assembly provided for some embodiments of this application; Figure 3 This application provides a schematic diagram of the second axonometric structure of a chassis assembly according to some embodiments. Figure 4 A schematic diagram of the structure of a hydraulic component in a chassis assembly provided in some embodiments of this application; Figure 5 A third axonometric structural schematic diagram of a chassis assembly provided for some embodiments of this application; Figure 6 This is a cross-sectional structural schematic diagram of a chassis assembly provided for some embodiments of this application.

[0017] Marker explanation: 100. Chassis assembly; 10. Frame assembly; 11. First longitudinal beam; 12. Second longitudinal beam; 13. First crossbeam; 14. Second crossbeam; 141. First sub-beam; 142. Second sub-beam; 15. Mounting beam; 16. First cantilever beam; 17. Second cantilever beam; 20. Battery components; 30. Lifting assembly; 31. Power mechanism; 311. Hydraulic pump; 32. Actuator; 321. Lifting cylinder; 33. Transmission mechanism; 331. Transmission pipeline; 3311. First pipeline; 3312. Second pipeline; 3313. Third pipeline; 332. Hydraulic oil tank; 333. Diversion structure; 334. Cooling pipeline; 335. Cold source; 40. Power components; 41. Power source; 42. Power fuel tank; 50. Heat dissipation components; 60. Heat dissipation system; A1, First mounting structure; A2, Second mounting structure; Q, receiving cavity; X, first direction; Y, second direction; Z, third direction.

[0018] In the accompanying drawings, the same parts use the same reference numerals. The drawings are not drawn to scale. Detailed Implementation

[0019] The features and exemplary embodiments of various aspects of this application will be described in detail below. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain this application and not to limit it. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples.

[0020] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0021] In the process of material transfer using mining dump trucks, in order to adapt to the complex climate of the mine, it is necessary to ensure that the mining dump trucks have a reliable power system, which is usually driven by a hybrid drive system. At the same time, mining dump trucks also need to be equipped with a lifting system to realize the unloading operation of materials, which makes the structural layout of the chassis of dump trucks different from that of conventional vehicles.

[0022] Generally, the lifting system is located in the chassis. The hybrid drive system includes a power battery. The power battery usually has a large weight and volume, requiring a large installation space. Because the lifting system occupies a large installation space in the chassis, the power battery is usually installed on one side of the cab, which results in the power battery being in a high position. This makes the mining dump truck itself have a high center of gravity, making it prone to rollover when driving on rough and uneven roads.

[0023] In view of this, firstly, please refer to Figure 1 and Figure 2 This application provides a chassis assembly 100, including a frame assembly 10, a battery assembly 20, and a lifting assembly 30. The frame assembly 10 encloses a receiving cavity Q, and the battery assembly 20 is connected to the frame assembly 10 and located inside the receiving cavity Q. The lifting assembly 30 is connected to the frame assembly 10 and includes a power mechanism 31 and an actuator 32 spaced apart along a first direction X, and a transmission mechanism 33 connecting the power mechanism 31 and the actuator 32. The power mechanism 31 and the actuator 32 are located on opposite sides of the battery assembly 20 along the first direction X. The power mechanism 31 is located inside the receiving cavity Q, and a portion of the transmission mechanism 33 is located outside the receiving cavity Q and on one side of the battery assembly 20 along a second direction Y, where the first direction X and the second direction Y intersect.

[0024] The chassis assembly 100 provided in this application embodiment is preferably used in mining dump vehicles. It can ensure the power drive of the mining dump vehicle while giving it a lower center of gravity, thereby improving its stability when driving on rough roads. Specifically, the chassis assembly 100 includes a frame assembly 10 and a battery assembly 20 and a lifting assembly 30 connected to the frame assembly 10. Through structural adjustments to the lifting assembly 30, while ensuring its function, a certain amount of space can be left in the chassis assembly 100 to allow the battery assembly 20 to be installed within the chassis assembly 100, thereby lowering the installation position of the battery assembly 20 and lowering the overall center of gravity of the mining dump vehicle. The battery assembly 20 can electrically drive the mining dump vehicle to meet its hybrid drive requirements and ensure its power.

[0025] The frame assembly 10 includes a first longitudinal beam 11, a second longitudinal beam 12, and a first crossbeam 13 and a second crossbeam 14 connecting the first longitudinal beam 11 and the second longitudinal beam 12. The first longitudinal beam 11 and the second longitudinal beam 12 both extend along a first direction X and are spaced apart in a second direction Y. The first crossbeam 13 and the second crossbeam 14 extend along the second direction Y and are spaced apart in the first direction X. The two ends of the first crossbeam 13 are connected to the first longitudinal beam 11 and the second longitudinal beam 12, respectively. The two ends of the second crossbeam 14 are also connected to the first longitudinal beam 11 and the second longitudinal beam 12, respectively. Both ends of the first longitudinal beam 11 extend and protrude beyond the first crossbeam 13 and the second crossbeam 14, and both ends of the second longitudinal beam 12 also extend and protrude beyond the first crossbeam 13 and the second crossbeam 14. The first longitudinal beam 11, the second longitudinal beam 12, the first crossbeam 13, and the second crossbeam 14 form the overall frame structure of the chassis assembly 100, ensuring the basic strength of the chassis assembly 100. The first crossbeam 13, a portion of the first longitudinal beam 11, the second crossbeam 14, and a portion of the second longitudinal beam 12 enclose and form the receiving cavity Q.

[0026] It is understandable that the extension direction of the first longitudinal beam 11 and the second longitudinal beam 12, i.e., the first direction X, can be consistent with the length direction of the vehicle, and the extension direction of the first cross beam 13 and the second cross beam 14, i.e., the second direction Y, can be consistent with the width direction of the vehicle. The receiving cavity Q formed by the partial structures of the first cross beam 13, the first longitudinal beam 11, the second cross beam 14, and the second longitudinal beam 12 is located in the center of the frame assembly 10. The receiving cavity Q can be arranged through the third direction Z to facilitate the installation of related structures inside the receiving cavity Q. The third direction Z can be consistent with the height direction of the vehicle.

[0027] The frame assembly 10 has three adjacent sections—a first section, a second section, and a third section—along a first direction X. The first section corresponds to the front of the vehicle, the second section to the middle, and the third section to the rear. Generally, the driver's cab is located in the first section, and the cargo bed is located in the second and third sections. The cargo bed is rotatably connected to the portion of the frame assembly 10 located in the third section. Under the action of the lifting system, the cargo bed can be spaced apart from the portion of the frame assembly 10 located in the second section, thus allowing the cargo bed to have a certain tilt angle and achieving automatic unloading of the vehicle. In related technologies, the engine is typically installed below the driver's cab, corresponding to the first section. The lifting system includes a lifting arm installed at the junction of the second and third sections, which can tilt the cargo bed. The lifting system also includes a structure located in the second section for converting engine power into lifting arm power. Based on the structural layout in the relevant technology, the battery pack 20 has no installation area in the chassis assembly 100 and can only be installed on one side of the cab. The installation position of the battery pack 20 is relatively high, which makes the vehicle have a relatively high center of gravity and the vehicle has poor stability when driving on rough roads.

[0028] In this embodiment, the lifting assembly 30 includes a power mechanism 31 and an actuator 32 spaced apart along a first direction X, and a transmission mechanism 33 connecting the power mechanism 31 and the actuator. The actuator 32 is used to directly perform the lifting action, thereby realizing the self-unloading function of the vehicle. The power mechanism 31 is used to provide power to the actuator 32, and the transmission mechanism 33 is used to transmit the power generated by the power mechanism 31 to the actuator 32, thereby realizing the lifting action.

[0029] It is understandable that the vehicle's power comes from the engine. The power mechanism 31 in the lifting assembly 30 needs to be positioned based on the engine's location, and the actuator 32 needs to be connected to the truck bed and provide stable support for it. The actuator 32 also needs to be positioned based on the truck bed's location. To create a larger space in the chassis assembly 100, in this embodiment, the position of the transmission mechanism 33 is adjusted, with a portion of its structure positioned outside the receiving cavity Q. This creates a space between the power mechanism 31 and the actuator 32, allowing the battery assembly 20 to be installed between them. This enables the battery assembly 20 to be installed in the chassis assembly 100, lowering its installation position and thus reducing the overall center of gravity of the mining dump vehicle.

[0030] In this embodiment, the power mechanism 31 and the battery assembly 20 are both located inside the receiving cavity Q. The power mechanism 31 and the actuator 32 are located on both sides of the battery assembly 20 along the first direction X. The power mechanism 31, the battery assembly 20, and the actuator 32 have gaps in the first direction X to ensure the independence of each structure. The transmission mechanism 33 includes a first part located on the side of the battery assembly 20 facing the power mechanism 31 and connected to the power mechanism 31, a second part located on the side of the battery assembly 20 facing the actuator 32 and connected to the actuator 32, and a third part connecting the first part and the second part. The first part and the second part mainly extend along the second direction Y to increase the space between the power mechanism 31 and the actuator 32 along the first direction X. The third part mainly extends along the first direction X and is located outside the receiving cavity Q and on one side of the battery assembly 20 along the second direction Y. That is, the third part and the battery assembly 20 are arranged side by side in the second direction Y, and both ends of the third part extend beyond the battery assembly 20 to connect with the first part and the second part, thus completing the power transmission. By setting the transmission mechanism 33 in the form of a first part, a second part, and a third part, the transmission mechanism 33 itself can form a certain enclosed space so that the battery assembly 20 can be installed in the chassis assembly 100, thereby reducing the installation position of the battery assembly 20 in the vehicle and lowering the overall center of gravity of the mining dump vehicle.

[0031] In summary, in this embodiment, the chassis assembly 100 includes a frame assembly 10, a battery assembly 20, and a lifting assembly 30. The frame assembly 10 encloses a receiving cavity Q. The lifting assembly 30 includes a power mechanism 31 and an actuator 32 spaced apart along a first direction X, and a transmission mechanism 33 connecting the power mechanism 31 and the actuator. The lifting assembly 30 is used to perform a lifting action, thereby realizing the vehicle's self-unloading function. The battery assembly 20 can electrically drive the vehicle to meet the vehicle's hybrid drive requirements and ensure the vehicle's power. Both the power mechanism 31 and the battery assembly 20 are located inside the receiving cavity Q. The power mechanism 31 and the actuator 32 are located on both sides of the battery assembly 20 along the first direction X. In order to create a larger space in the chassis assembly 100, in this embodiment, the position of the transmission mechanism 33 is adjusted so that part of the structure of the transmission mechanism 33 is located outside the receiving cavity Q and on one side of the battery assembly 20 along the second direction Y, so that a certain space is formed between the power mechanism 31 and the actuator 32, thereby installing the battery assembly 20 between the power mechanism 31 and the actuator 32, so that the battery assembly 20 can be installed in the chassis assembly 100, thereby lowering the installation position of the battery assembly 20, lowering the overall center of gravity of the vehicle, and improving the stability of the vehicle when driving on rough roads.

[0032] In some embodiments, please refer to Figure 2 , Figure 3 and Figure 4 The lifting assembly 30 includes a hydraulic structure, the power mechanism 31 includes a hydraulic pump 311, the transmission mechanism 33 includes a transmission pipe 331, and the actuator 32 includes a lifting cylinder 321. A portion of the transmission pipe 331 is projected onto the third direction Z outside the projection of the battery assembly 20 onto the third direction Z. The third direction Z, the second direction Y, and the first direction X intersect each other.

[0033] To ensure reliable lifting force while facilitating structural design, the lifting assembly 30 includes a hydraulic structure to guarantee the lifting force. The hydraulic structure transmits the force via hydraulic pipes, which also facilitates the installation of the transmission mechanism 33. Optionally, in other embodiments, the lifting assembly 30 may also employ a mechanical structure to achieve its lifting function.

[0034] When the lifting assembly 30 includes a hydraulic structure, the power mechanism 31 includes a hydraulic pump 311, the transmission mechanism 33 includes a transmission pipe 331, and the actuator 32 includes a lifting cylinder 321. The hydraulic pump 311 provides flow power to the hydraulic oil in the transmission pipe 331, converting low-pressure hydraulic oil into high-pressure hydraulic oil, thus changing the force. When the hydraulic oil is transmitted to the lifting cylinder 321, a lifting action is achieved through the lifting cylinder 321. Compared to a mechanical structure, the hydraulic structure has relatively higher transmission efficiency, improving the utilization rate of power.

[0035] Furthermore, after the hydraulic pump 311 and the lifting cylinder 321 are fixed in their positions, the transmission pipe 331 connects the corresponding structures during the installation process. The transmission pipe 331 has a relatively flexible installation shape. The transmission pipe 331 can be bent so that the projection of part of the structure of the transmission pipe 331 in the third direction Z is outside the projection of the battery assembly 20 in the third direction Z, thereby avoiding the battery assembly 20 and facilitating the installation of the battery assembly 20.

[0036] In some embodiments, please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 Multiple hydraulic pumps 311 are provided, and the multiple hydraulic pumps 311 are spaced apart along the second direction Y. The transmission mechanism 33 includes a hydraulic oil tank 332, and the transmission pipeline 331 includes multiple independently provided first pipelines 3311, which are connected to the multiple hydraulic pumps 311 respectively, and the multiple first pipelines 3311 are connected in parallel to the hydraulic oil tank 332.

[0037] To ensure the lifting power of the lifting assembly 30, multiple hydraulic pumps 311 can be connected in parallel to provide lifting power to the lifting assembly 30. Specifically, at least two hydraulic pumps 311 are provided, and the at least two hydraulic pumps 311 are arranged side by side and spaced apart along the second direction Y to reduce the space occupied by the hydraulic pumps 311 in the first direction X, thereby facilitating the installation of the battery assembly 20.

[0038] The transmission mechanism 33 also includes a hydraulic oil tank 332, and the transmission pipeline 331 includes multiple independently configured first pipelines 3311, which are connected to multiple hydraulic pumps 311 respectively. The multiple first pipelines 3311 are connected in parallel to the hydraulic oil tank 332. Taking two hydraulic pumps 311 as an example, two first pipelines 3311 are also provided, one end of which is connected to the hydraulic pump 311, and the other end is connected to the hydraulic oil tank 332. When the hydraulic pump 311 is working, it can draw oil from the hydraulic oil tank 332 into the hydraulic pump 311 along the first pipelines 3311. After being pressurized, the oil is transmitted to one side of the lifting cylinder 321, thereby realizing the transmission of force. Two sets of hydraulic pumps 311 and the first pipeline 3311 are connected in parallel to the hydraulic oil tank 332, which enables the two sets of hydraulic pumps 311 and the first pipeline 3311 to work independently. When lifting power is required, sufficient oil can be transmitted to the lifting cylinder 321, thereby ensuring the lifting force of the lifting assembly 30.

[0039] In some embodiments, please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 The chassis assembly 100 also includes a power unit 40, which is connected to the frame assembly 10 and located on the side of the power mechanism 31 opposite to the battery assembly 20 along the first direction X. The power unit 40 includes multiple power sources 41 arranged side by side along the second direction Y, and the output ends of the multiple power sources 41 are correspondingly connected to multiple hydraulic pumps 311. The power unit 40 includes a power oil tank 42 connected to the power sources 41. The power oil tank 42 and the hydraulic oil tank 332 are both connected to the frame assembly 10 and are located on both sides outside the receiving cavity Q along the second direction Y. The projection of the power oil tank 42 in the second direction Y overlaps with the projection of the hydraulic oil tank 332 in the second direction Y.

[0040] The power assembly 40 serves as the overall power source for the vehicle, providing power not only for the vehicle's movement but also for the operation of the hydraulic pump 311. The power assembly 40 is connected to the frame assembly 10 and is located on the side of the power mechanism 31 facing away from the battery assembly 20 along the first direction X. The power assembly 40 and the battery assembly 20 are respectively located on opposite sides of the power structure along the first direction X.

[0041] The power assembly 40 includes multiple power sources 41 arranged side-by-side at intervals along the second direction Y. Each power source 41 corresponds to a multiple hydraulic pump 311, and the output of each power source 41 is connected to a corresponding hydraulic pump 311. It is understood that multiple power sources 41 are provided to ensure the vehicle's power. Furthermore, to ensure the lifting power of the lifting assembly 30, the outputs of the multiple power sources 41 are connected to corresponding hydraulic pumps 311. Each power source 41 can independently provide power to each hydraulic pump 311. Combined with a hydraulic oil tank 332 connected to each hydraulic pump 311 through an independent first pipe 3311, each hydraulic pump 311 can operate independently, ensuring both the lifting force and the reliability of the lifting assembly 30.

[0042] Each power source 41 includes an engine and a generator arranged sequentially along the first direction X. On one hand, the engine can drive the generator to generate electricity and store the electrical energy in the battery pack 20, which provides driving force for the vehicle. On the other hand, the engine can also directly provide driving force for the vehicle. Optionally, the vehicle's wheels can be electric wheels, powered by the battery pack 20. The engine can drive the generator to generate electricity and store the electrical energy in the battery pack 20. The engine and generator form a range extender unit, thereby providing power to the vehicle.

[0043] The power assembly 40 includes a power oil tank 42 connected to the power source 41, and is combined with a hydraulic oil tank 332. The vehicle has two independent oil tanks. To improve the weight distribution balance of the vehicle structure, both the power oil tank 42 and the hydraulic oil tank 332 are connected to the frame assembly 10 and located on opposite sides of the outer surface of the receiving cavity Q along the second direction Y. The projections of the power oil tank 42 and the hydraulic oil tank 332 in the second direction Y overlap. Furthermore, the power oil tank 42 and the hydraulic oil tank 332 can be symmetrically arranged along the second direction Y, connected to the middle of the frame assembly 10, and located on opposite sides of the battery assembly 20 along the second direction Y, to improve the weight distribution balance of the chassis assembly 100 in the second direction Y.

[0044] Optionally, please refer to Figure 4To cool the oil, the transmission mechanism 33 also includes multiple independently configured cooling pipes 334. Both ends of each cooling pipe 334 are connected to the hydraulic pump 311, and a cold source 335 is connected to the middle of each cooling pipe 334. Oil can circulate along the cooling pipes 334 and flow into the hydraulic pump 311, thereby cooling a portion of the oil in the hydraulic pump 311 to ensure a suitable operating temperature. The cooling pipes 334 are located on one side of the hydraulic pump 311 along the third direction Z to reduce the spatial dimensions of the hydraulic pump 311 in the first direction X, thus facilitating the installation of the battery assembly 20 in the chassis assembly 100.

[0045] In some embodiments, please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 The frame assembly 10 includes a first longitudinal beam 11, a second longitudinal beam 12, and a first crossbeam 13 connecting the first longitudinal beam 11 and the second longitudinal beam 12. The first longitudinal beam 11 and the second longitudinal beam 12 both extend along a first direction X and are spaced apart in a second direction Y. The first crossbeam 13 extends along the second direction Y. A power assembly 40 and a lifting assembly 30 are located on both sides of the first crossbeam 13 along the first direction X. The frame assembly 10 also includes a mounting beam 15 extending along the second direction Y. Both ends of the mounting beam 15 are connected to the first longitudinal beam 11 and the second longitudinal beam 12, respectively. Multiple power sources 41 are connected side-by-side along the second direction Y to the first crossbeam 13, and multiple hydraulic pumps 311 are connected side-by-side along the second direction Y to the mounting beam 15.

[0046] In this embodiment, the power mechanism 31 and the power assembly 40 in the lifting assembly 30 are interconnected. Due to the arrangement of the battery assembly 20, the installation space for the power mechanism 31 is reduced. The power mechanism 31 also includes multiple hydraulic pumps 311 spaced apart along the second direction Y. To ensure the installation stability of the power mechanism 31 on the frame assembly 10, a mounting beam 15 is added to the frame assembly 10, and the hydraulic pumps 311 are mounted on the mounting beam 15.

[0047] The frame assembly 10 includes a first longitudinal beam 11, a second longitudinal beam 12, and a first crossbeam 13 and a second crossbeam 14 connecting the first longitudinal beam 11 and the second longitudinal beam 12. The first longitudinal beam 11 and the second longitudinal beam 12 both extend along a first direction X and are spaced apart in a second direction Y. The first crossbeam 13 and the second crossbeam 14 extend along the second direction Y and are spaced apart in the first direction X. Both ends of the first crossbeam 13 are connected to the first longitudinal beam 11 and the second longitudinal beam 12, respectively. Both ends of the second crossbeam 14 are also connected to the first longitudinal beam 11 and the second longitudinal beam 12, respectively. Both ends of the first longitudinal beam 11 extend and protrude beyond the first crossbeam 13 and the second crossbeam 14, respectively. The first longitudinal beam 11, the second longitudinal beam 12, the first crossbeam 13, and the second crossbeam 14 form the overall frame structure of the chassis assembly 100. The mounting beam 15 is disposed between the first crossbeam 13 and the second crossbeam 14, and the distance between the mounting beam 15 and the first crossbeam 13 is less than the distance between the mounting beam 15 and the second crossbeam 14.

[0048] The side of the first crossbeam 13 facing away from the second crossbeam 14 along the first direction X is the front side of the vehicle. The power assembly 40 is installed on the front side of the vehicle. Part of the structure of the power assembly 40 is connected to the first crossbeam 13, and part of the structure of the power mechanism 31 is connected to the mounting beam 15. Extending both the mounting beam 15 and the first crossbeam 13 along the second direction Y facilitates the correspondence between the multiple power sources 41 in the power assembly 40 and the multiple hydraulic pumps 311 in the power mechanism 31.

[0049] The first crossbeam 13 extends along the second direction Y and has a certain extension dimension in the second direction Y. Multiple power sources 41 can be connected side-by-side to the first crossbeam 13 along the second direction Y. Correspondingly, the mounting beam 15 extends along the second direction Y and has a certain extension dimension in the second direction Y. Multiple hydraulic pumps 311 can be connected side-by-side to the mounting beam 15 along the second direction Y. The power sources 41 and hydraulic pumps 311 are arranged side-by-side at intervals along the second direction Y, which can reduce the spatial dimensions in the first direction X while ensuring power, so as to facilitate the installation of the battery assembly 20. Furthermore, the above arrangement can also make the structures on the front side of the vehicle relatively compact, improve the integration of power-related structures on the front side of the vehicle, and improve the weight and stability of the chassis assembly 100 itself.

[0050] In some embodiments, please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5Multiple lifting cylinders 321 are provided, and each lifting cylinder 321 is connected to the frame assembly 10 and located on both sides outside the receiving cavity Q along the second direction Y. The transmission mechanism 33 also includes a diversion structure 333 connected to the hydraulic pump 311. The transmission pipe 331 includes multiple independently arranged second pipes 3312, which are connected to the multiple lifting cylinders 321 respectively, and are connected in parallel to the diversion structure 333.

[0051] To ensure the lifting stability of the lifting assembly 30, multiple lifting cylinders 321 can be provided. These cylinders are symmetrically connected to both sides of the frame assembly 10, thus forming a symmetrical and balanced support connection between the frame assembly 10 and the truck bed, achieving stability during the lifting operation. To reduce the impact of the lifting cylinders 321 on the internal structure of the receiving cavity Q, all lifting cylinders 321 are located outside the receiving cavity Q, with the same number of cylinders 321 provided on both sides of the frame assembly 10 along the second direction Y.

[0052] Under the action of the hydraulic pump 311, hydraulic fluid in the hydraulic oil tank 332 is drawn in and output, converting low-pressure fluid into high-pressure fluid. The high-pressure fluid is then transmitted to the lifting cylinder 321 to achieve the lifting action. To ensure the coordinated operation of multiple lifting cylinders 321, the transmission mechanism 33 also includes a diversion structure 333 connected to the hydraulic pump 311. The diversion structure 333 receives the high-pressure fluid output by the hydraulic pump 311 and distributes it to different lifting cylinders 321. The transmission pipeline 331 includes multiple independently arranged second pipelines 3312, which are correspondingly connected to multiple lifting cylinders 321 and are connected in parallel to the diversion structure 333. The diversion structure 333 transmits the high-pressure fluid to different lifting cylinders 321 through different second pipelines 3312. Optionally, multiple independent pipelines are provided between each lifting cylinder 321 and the diversion structure 333 to enable efficient fluid flow.

[0053] In some embodiments, please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5The transmission mechanism 33 also includes a third pipe 3313 connected between the diversion structure 333 and the hydraulic oil tank 332. The third pipe 3313 is used to return the low-pressure oil after the lifting cylinder 321 finishes its lifting action. It is understood that the hydraulic oil tank 332 stores oil. When the lifting cylinder 321 needs to perform a lifting action, low-pressure oil flows through the first pipe 3311 under the action of the hydraulic pump 311. The hydraulic pump 311 draws oil from the hydraulic oil tank 332, and through the pressurization action of the hydraulic pump 311, the low-pressure oil becomes high-pressure oil and is transmitted to the diversion structure 333. At this time, the third pipe 3313 is closed, and the high-pressure oil is transmitted to the lifting cylinder 321 through the second pipe 3312 to achieve the lifting action. After the lifting operation is completed, the third pipe 3313 opens, allowing the oil in the second pipe 3312 to flow back to the hydraulic oil tank 332 via the diversion structure 333, thus achieving oil recovery. Each hydraulic pump 311 is connected to the hydraulic oil tank 332 via an independent pipe and also to the diversion structure 333 via an independent pipe to ensure sufficient oil for the lifting process.

[0054] In some embodiments, please refer to Figure 2 , Figure 3 , Figure 5 and Figure 6 The frame assembly 10 includes a first longitudinal beam 11, a second longitudinal beam 12, and a second crossbeam 14 connecting the first longitudinal beam 11 and the second longitudinal beam 12. The first longitudinal beam 11 and the second longitudinal beam 12 both extend along a first direction X and are spaced apart in a second direction Y. The second crossbeam 14 extends along the second direction Y. The second crossbeam 14 includes a first sub-beam 141 and a second sub-beam 142 spaced apart along a third direction Z. The projection of the first sub-beam 141 in the third direction Z and the projection of the second sub-beam 142 in the third direction Z are offset. A shunt structure 333 is mounted on the first sub-beam 141, and a portion of the battery assembly 20 is connected to the second sub-beam 142.

[0055] The frame assembly 10 includes a first longitudinal beam 11, a second longitudinal beam 12, and a first crossbeam 13 and a second crossbeam 14 connecting the first longitudinal beam 11 and the second longitudinal beam 12. The first longitudinal beam 11 and the second longitudinal beam 12 both extend along a first direction X and are spaced apart in a second direction Y. The first crossbeam 13 and the second crossbeam 14 extend along the second direction Y and are spaced apart in the first direction X. Both ends of the first crossbeam 13 are connected to the first longitudinal beam 11 and the second longitudinal beam 12, respectively. Both ends of the second crossbeam 14 are also connected to the first longitudinal beam 11 and the second longitudinal beam 12, respectively. Both ends of the first longitudinal beam 11 extend and protrude beyond the first crossbeam 13 and the second crossbeam 14, respectively. The first longitudinal beam 11, the second longitudinal beam 12, the first crossbeam 13, and the second crossbeam 14 form the overall frame structure of the chassis assembly 100. The first crossbeam 13 is located in the front region of the vehicle along the first direction X, away from the second crossbeam 14. The area between the first crossbeam 13 and the second crossbeam 14 is located in the middle region of the vehicle. The second crossbeam 14 is located in the rear region of the vehicle along the first direction X, away from the first crossbeam 13. The lifting cylinder 321 is installed and connected to the vicinity of the second crossbeam 14 along the first direction X. Correspondingly, the diversion structure 333 is also installed in the adjacent area of ​​the second crossbeam 14. Considering that the diversion structure 333 needs to accommodate the lifting cylinders 321 on both sides of the frame assembly 10, the diversion structure 333 can be installed on the second crossbeam 14 to facilitate the installation of the second pipe 3312.

[0056] In this embodiment, the battery assembly 20 is also located between the first crossbeam 13 and the second crossbeam 14 to facilitate the installation and connection of the shunt structure 333 and the battery assembly 20 at the attachment of the second crossbeam 14. The second crossbeam 14 includes a first sub-beam 141 and a second sub-beam 142 spaced apart along a third direction Z. The shunt structure 333 is installed on the first sub-beam 141, and a portion of the battery assembly 20 is connected to the second sub-beam 142 to reduce the mutual influence between the battery assembly 20, the shunt structure 333, and the second conduit 3312.

[0057] Furthermore, the projection of the first sub-beam 141 onto the third direction Z is offset from the projection of the second sub-beam 142 onto the third direction Z. That is, the first sub-beam 141 and the second sub-beam 142 are at different distances from the battery assembly 20. The first sub-beam 141 is located along the first direction X on the side of the second sub-beam 142 furthest from the battery assembly 20. By spacing the first sub-beam 141 and the second sub-beam 142 along the first direction X, space can be provided for the installation of the second pipe 3312. By spacing the first sub-beam 141 and the second sub-beam 142 along the third direction Z, the first sub-beam 141 is spaced apart from the battery assembly 20, reducing the impact of the first sub-beam 141 on the installation and connection of the battery assembly 20.

[0058] In some embodiments, please refer to Figure 2 , Figure 3 , Figure 5 and Figure 6 A first cantilever beam 16 protrudes from the side of the first longitudinal beam 11 facing the second longitudinal beam 12, and a second cantilever beam 17 protrudes from the side of the second longitudinal beam 12 facing the first longitudinal beam 11. Part of the battery assembly 20 is connected to the first cantilever beam 16 and the second cantilever beam 17. Both the first cantilever beam 16 and the second cantilever beam 17 are spaced apart from the power mechanism 31 in the first direction X.

[0059] Both the battery assembly 20 and the power mechanism 31 are located between the first crossbeam 13 and the second crossbeam 14. The power mechanism 31 needs to be located close to the power assembly 40. The power mechanism 31 is connected by adding a mounting beam 15, so that the battery assembly 20 is located on the side of the power mechanism 31 facing the second crossbeam 14. The side of the battery assembly 20 facing the second crossbeam 14 can be directly connected to the second crossbeam 14. Considering that a hydraulic pump 311 is installed on the mounting beam 15, the side of the battery assembly 20 facing the first crossbeam 13 needs to be spaced apart from the mounting beam 15.

[0060] For the side of the battery assembly 20 facing the first crossbeam 13, it can be installed using cantilever beams on the first longitudinal beam 11 and the second longitudinal beam 12. Specifically, a first cantilever beam 16 protrudes from the side of the first longitudinal beam 11 facing the second longitudinal beam 12, and a second cantilever beam 17 protrudes from the side of the second longitudinal beam 12 facing the first longitudinal beam 11. The ends of the first cantilever beam 16 and the second cantilever beam 17 are spaced apart, and the distance between them is less than the dimension of the battery assembly 20 in the second direction Y. The front structure of the battery assembly 20 is connected to the first cantilever beam 16 and the second cantilever beam 17. The rear structure of the battery assembly 20 is connected to the second crossbeam 14, thus achieving the installation and fixation of the battery assembly 20 in the chassis assembly 100. Optionally, the side of the second crossbeam 14 facing the battery assembly 20 can also have a protruding mounting structure, so that the mounting structure overlaps with the battery assembly 20 to ensure the installation stability of the battery assembly 20. For example, three mounting structures may be provided protruding from the side of the second crossbeam 14 facing the battery assembly 20. The three mounting structures are spaced apart from each other in the second direction Y and are also spaced apart from the first cantilever beam 16 and the second cantilever beam 17 in the second direction Y, so as to provide mounting support for the battery assembly 20 at different positions in the second direction Y.

[0061] In some embodiments, please refer to Figure 2 , Figure 3 , Figure 5 and Figure 6The chassis assembly 100 also includes a heat dissipation component 50, which is located along the first direction X on the side of the second sub-beam 142 opposite to the battery assembly 20. A first mounting structure A1 is provided on the side of the second sub-beam 142 facing the power mechanism 31, and a portion of the battery assembly 20 is connected to the first mounting structure A1; a second mounting structure A2 is provided on the side of the second sub-beam 142 facing the heat dissipation component 50, and a portion of the heat dissipation component 50 is connected to the second mounting structure A2.

[0062] The vehicle can be rear-wheel drive. To ensure its performance on complex terrain, the rear wheels can employ a dual-wheel-side motor independent drive system integrated within the wheel hub. This system allows for relatively independent torque output to both rear wheels, enabling differential control. To ensure heat dissipation for the rear wheels, the chassis assembly also includes a heat dissipation component 50. This component is located along the first direction X on the side of the second sub-beam 142 opposite to the battery assembly 20 and is mounted and connected to the second sub-beam 142.

[0063] The heat dissipation assembly 50 and the battery assembly 20 are respectively located on both sides of the second sub-beam 142 along the first direction X. A first mounting structure A1 is provided on the side of the second sub-beam 142 facing the battery assembly 20, and the first mounting structure A1 is used to mount the battery assembly 20. A second mounting structure A2 is provided on the side of the second sub-beam 142 facing the heat dissipation assembly 50, and the second mounting structure A2 is used to mount the heat dissipation assembly 50. Installing the heat dissipation assembly 50 onto the second sub-beam 142 shortens the distance between the heat dissipation assembly 50 and the rear wheel, reduces the length of the air duct, and facilitates heat dissipation from the rear wheel by the heat dissipation assembly 50. Specifically, the heat dissipation assembly 50 includes a cooling fan, and the air outlet of the cooling fan is directly connected to the internal dual-wheel-side motor independent drive system of the rear wheel to achieve heat dissipation of the rear wheel.

[0064] In the chassis assembly 100 provided in this application, the frame assembly 10 includes a first longitudinal beam 11, a second longitudinal beam 12, and a first crossbeam 13 and a second crossbeam 14 connecting the first longitudinal beam 11 and the second longitudinal beam 12. The first longitudinal beam 11 and the second longitudinal beam 12 both extend along a first direction X and are spaced apart in a second direction Y. The first crossbeam 13 and the second crossbeam 14 extend along the second direction Y and are spaced apart in the first direction X. The two ends of the first crossbeam 13 are respectively connected to the first longitudinal beam 11 and the second longitudinal beam 12, and the two ends of the second crossbeam 14 are also respectively connected to the first longitudinal beam 11 and the second longitudinal beam 12. Both ends of the first longitudinal beam 11 extend and protrude beyond the first crossbeam 13 and the second crossbeam 14, and both ends of the second longitudinal beam 12 also extend and protrude beyond the first crossbeam 13 and the second crossbeam 14. The first longitudinal beam 11, the second longitudinal beam 12, the first crossbeam 13, and the second crossbeam 14 form the overall frame structure of the chassis assembly 100. The first crossbeam 13 is located in the front region of the vehicle along the first direction X, away from the second crossbeam 14. The area between the first crossbeam 13 and the second crossbeam 14 is located in the middle region of the vehicle. The second crossbeam 14 is located in the rear region of the vehicle along the first direction X, away from the first crossbeam 13.

[0065] The power assembly 40 is located in the front part of the vehicle, and part of its structure is connected to the first crossbeam 13. To dissipate heat from the power assembly 40, a cooling system 60 can be installed on the side of the power assembly 40 facing away from the first crossbeam 13. The cooling system 60 is used to dissipate heat from the power assembly 40. The power source 41 includes an engine and a generator connected in series along the first direction X. The engine and generator can form a compact range extender unit, shortening the power transmission path and improving energy conversion efficiency. Combined with the battery assembly 20 and the configuration of the vehicle's rear wheels as a dual-wheel-side motor independent drive system, the range extender unit and the dual-wheel-side motor independent drive system can work collaboratively, intelligently switching between multiple modes such as pure electric drive, range-extended power supply, and dual-source power supply to meet the power needs of various working conditions under complex road conditions in mines.

[0066] The battery pack 20 is located in the middle of the vehicle, within the cavity Q formed by the partial structures of the first crossbeam 13, the first longitudinal beam 11, the second crossbeam 14, and the second longitudinal beam 12. This lowers the overall center of gravity of the chassis assembly 100. The symmetrical arrangement of the power oil tank 42 and the hydraulic oil tank 332 on both sides, along with the rear wheels configured as a dual-wheel-side motor independent drive system, improves the uniformity of the vehicle's unloaded load distribution. The power oil tank 42 can be equipped with surge protection, further lowering the center of gravity of the chassis assembly 100. The front wheels are connected to the frame assembly 10 near the first crossbeam 13, while the rear wheels are connected to the second crossbeam 14 on the side opposite to the first crossbeam 13. The front suspension uses a MacPherson strut air suspension, and the rear suspension uses a multi-link balance suspension. Combined with long-travel shock absorbers, this effectively absorbs the impact loads from bumpy mining roads, significantly improving the vehicle's driving stability during climbing and cornering, while also reducing tire wear rate.

[0067] Secondly, embodiments of this application provide a vehicle including the chassis assembly 100 described in any embodiment of the first aspect of this application. The vehicle includes all the technical features of the chassis assembly 100 and has all the technical effects of the chassis assembly 100, which will not be repeated here.

[0068] Although the invention has been described with reference to preferred embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner as long as there is no structural conflict. The invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A chassis assembly, characterized in that, include: The frame assembly encloses and forms a receiving cavity; The battery assembly is connected to the frame assembly and located inside the receiving cavity; A lifting assembly is connected to the frame assembly. The lifting assembly includes a power mechanism and an actuator spaced apart along the length of the vehicle, and a transmission mechanism connecting the power mechanism and the actuator. The power mechanism and the actuator are located on both sides of the battery assembly along the length of the vehicle. The power mechanism is located inside the housing cavity, and a portion of the transmission mechanism is located outside the housing cavity and on one side of the battery assembly along the width direction of the vehicle. The length direction and the width direction of the vehicle intersect. The lifting assembly includes a hydraulic structure, the power mechanism includes a hydraulic pump, the transmission mechanism includes a transmission pipeline, and the actuator includes a lifting cylinder; The projection of a portion of the transmission pipe structure in the height direction of the vehicle is located outside the projection of the battery assembly in the height direction of the vehicle, and the height direction, width direction, and length direction of the vehicle intersect each other. The hydraulic pumps are provided in multiple ways, and the multiple hydraulic pumps are spaced apart along the width direction of the vehicle; The transmission mechanism includes a hydraulic oil tank, and the transmission pipeline includes a plurality of independently set first pipelines, which are connected to a plurality of hydraulic pumps respectively, and the plurality of first pipelines are connected in parallel to the hydraulic oil tank. It also includes a power assembly, which is connected to the frame assembly and located on the side of the power mechanism away from the battery assembly along the length direction of the vehicle. The power assembly includes a plurality of power sources arranged side by side along the width direction of the vehicle, and the output ends of the plurality of power sources are correspondingly connected to a plurality of hydraulic pumps. The power assembly includes a power oil tank connected to the power source. Both the power oil tank and the hydraulic oil tank are connected to the frame assembly and are located on both sides outside the receiving cavity along the width direction of the vehicle. The projection of the power oil tank in the width direction of the vehicle overlaps with the projection of the hydraulic oil tank in the width direction of the vehicle.

2. The chassis assembly according to claim 1, characterized in that, The frame assembly includes a first longitudinal beam, a second longitudinal beam, and a first crossbeam connected between the first longitudinal beam and the second longitudinal beam. The first longitudinal beam and the second longitudinal beam both extend along the length direction of the vehicle and are spaced apart in the width direction of the vehicle. The first crossbeam extends along the width direction of the vehicle. The power assembly and the lifting assembly are located on both sides of the first crossbeam along the length direction of the vehicle. The frame assembly also includes a mounting beam extending along the width direction of the vehicle, with its two ends connected to the first longitudinal beam and the second longitudinal beam, respectively. A plurality of power sources are connected side-by-side to the first crossbeam along the width direction of the vehicle, and a plurality of hydraulic pumps are connected side-by-side to the mounting beam along the width direction of the vehicle.

3. The chassis assembly according to claim 1, characterized in that, Multiple lifting cylinders are provided, and each of the multiple lifting cylinders is connected to the frame assembly and located on both sides outside the receiving cavity along the width direction of the vehicle. The transmission mechanism further includes a flow-diverting structure connected to the hydraulic pump. The transmission pipeline includes multiple independently configured second pipelines, which are connected to multiple lifting cylinders respectively. The multiple second pipelines are connected in parallel to the flow-diverting structure.

4. The chassis assembly according to claim 3, characterized in that, The frame assembly includes a first longitudinal beam, a second longitudinal beam, and a second crossbeam connecting the first longitudinal beam and the second longitudinal beam. The first longitudinal beam and the second longitudinal beam both extend along the length direction of the vehicle and are spaced apart in the width direction of the vehicle. The second crossbeam extends along the width direction of the vehicle. The second crossbeam includes a first sub-beam and a second sub-beam spaced apart along the height direction of the vehicle. The projection of the first sub-beam in the height direction of the vehicle and the projection of the second sub-beam in the height direction of the vehicle are offset. The current shunt structure is installed on the first sub-beam, and a portion of the battery assembly structure is connected to the second sub-beam.

5. The chassis assembly according to claim 4, characterized in that, A first cantilever beam protrudes from the side of the first longitudinal beam toward the second longitudinal beam, and a second cantilever beam protrudes from the side of the second longitudinal beam toward the first longitudinal beam. A portion of the battery assembly is connected to the first cantilever beam and the second cantilever beam. The first cantilever beam and the second cantilever beam are both spaced apart from the power mechanism along the length of the vehicle.

6. The chassis assembly according to claim 4, characterized in that, The chassis assembly also includes a heat dissipation component located along the length of the vehicle on the side of the second sub-beam opposite to the battery assembly; The second sub-beam has a first mounting structure on the side facing the power mechanism, and a portion of the battery assembly is connected to the first mounting structure; the second sub-beam has a second mounting structure on the side facing the heat dissipation assembly, and a portion of the heat dissipation assembly is connected to the second mounting structure.

7. A vehicle, characterized in that, Includes the chassis assembly as described in any one of claims 1-6.

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