New energy heavy truck chassis structure and vehicle

Abstract

The application discloses a new energy heavy-duty vehicle chassis structure and a vehicle. The chassis structure comprises a vehicle frame and a power battery system. The vehicle frame is divided into a front section, a middle section and a rear section along the length direction. The three sections are detachably connected through section connection assemblies. The middle section is a frame type multi-layer structure. The frame type multi-layer structure is at least divided into two accommodation spaces in the height direction. The power battery system comprises at least two lithium battery assemblies. The two lithium battery assemblies are respectively arranged in the accommodation spaces. The three sections of the vehicle frame are detachably connected. The length and width of the middle section are changed to adjust the wheelbase and match more battery pack size requirements. The middle section adopts the frame type multi-layer structure. The battery pack is arranged in the accommodation space of the frame type multi-layer structure in a side extraction mode, so that the requirements for maintenance equipment and site are reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric vehicles, and more particularly to a new energy heavy-duty vehicle chassis structure and a vehicle. BACKGROUND

[0002] The chassis structure of a new energy heavy-duty vehicle generally follows the chassis structure of a fuel vehicle. For example, a heavy vehicle chassis and a heavy vehicle are disclosed in Chinese Patent No. CN215398924U. The chassis includes a vehicle frame having two longitudinal beams arranged opposite to each other in the left-right direction, and a receiving space between the two longitudinal beams. However, due to the spatial arrangement requirements of the rear axle double wheels, the width of the longitudinal beam cannot be too wide, generally between 850mm and 860mm. However, due to the width of the longitudinal beam, the selection of the battery pack model is limited.

[0003] Since the battery pack is usually installed and arranged in the middle of the longitudinal beam, in order to ensure the safety of the battery pack, the middle of the longitudinal beam needs to have higher torsional stiffness than the fuel vehicle. However, the existing planar chassis frame composed of two longitudinal beams and several cross beams is not conducive to the improvement of torsional stiffness. In addition, the existing battery pack is usually replaced from the bottom of the chassis, and there is not enough maintenance space under the chassis, and a battery replacement lifting mechanism and a special site are needed to replace and maintain the battery pack. SUMMARY

[0004] The present application provides a new energy heavy-duty vehicle chassis structure and a vehicle, which aims to solve the problems of limited battery pack model selection, small maintenance space under the chassis, and inconvenient battery pack replacement of the existing new energy heavy-duty vehicle chassis.

[0005] The present application adopts the following technical solutions:

[0006] A new energy heavy-duty vehicle chassis structure, comprising: a vehicle frame, the vehicle frame is divided into a vehicle frame front section, a vehicle frame middle section and a vehicle frame rear section along the length direction, the vehicle frame front section and the vehicle frame middle section, and the vehicle frame middle section and the vehicle frame rear section are detachably connected by a section connection assembly, the vehicle frame middle section is a frame type multi-layer structure, and the frame type multi-layer structure is at least divided into two receiving spaces in the height direction; and a power battery system, the power battery system at least includes two lithium battery assemblies, and the lithium battery assemblies are correspondingly arranged in the receiving spaces.

[0007] In a preferred embodiment, the frame type multi-layer structure is a frame type three-layer structure, which is divided into a first receiving space and a second receiving space in the height direction, the power battery system comprises a first lithium battery assembly and a second lithium battery assembly, and the first receiving space and the second receiving space are both frame structures which are front-to-back and left-to-right through.

[0008] In a preferred embodiment, the frame type multi-layer structure comprises an upper layer plane structure, a middle layer plane structure, a lower layer plane structure and a plurality of vertical beams, each corner of the upper layer plane structure is connected to the middle layer plane structure and the lower layer plane structure through a vertical beam, thereby forming a space frame structure.

[0009] In a preferred embodiment, the front section of the frame comprises two front section straight longitudinal beams, two front section oblique longitudinal beams, a front section straight longitudinal beam, two front section lower bending cross beams, a front anti-collision beam, two front energy absorption beams, a vertical beam structure, a plurality of first longitudinal connecting assemblies and a plurality of second longitudinal connecting assemblies, the rear end of each front section straight longitudinal beam is detachably connected to the front end of each front section oblique longitudinal beam, the rear end of each front section oblique longitudinal beam is detachably connected to the middle section of the frame through the section connecting assembly, the two front section lower bending cross beams are connected between the two front section straight longitudinal beams, the vertical beam structure is a reverse "π" type structure which is bolted to the front section straight longitudinal beam, the two front energy absorption beams are detachably connected to the vertical beam structure, the front anti-collision beam is arranged below the front section straight cross beam and is bolted to the front energy absorption beam, the vertical beam structure is connected to the front section lower bending cross beam close to the front end of the frame through the first longitudinal connecting assembly, the two front section lower bending cross beams are connected through the second longitudinal connecting assembly, and the front section lower bending cross beam close to the rear end of the frame is connected to the middle section of the frame through the first longitudinal connecting assembly.

[0010] In a preferred embodiment, the front section lower bending cross beam is connected by a pair of longitudinally parallel cut plates and a transversely bent plate, bolt holes for connecting to the web of the front section straight longitudinal beam are formed in the upper part of the two ends of the transversely bent plate, the transversely bent plate is hinged to the outer end of the double fork arm front suspension swing arm, and the transversely bent plate is bent at the position of the outer end hard point of the double fork arm suspension swing arm.

[0011] In a preferred embodiment, the rear section of the frame comprises a rear section straight longitudinal beam, a rear section oblique longitudinal beam and a rear section cross beam, the rear section straight longitudinal beam is detachably connected to the rear section oblique longitudinal beam, and the rear section oblique longitudinal beam is detachably connected to the upper layer plane structure of the middle section of the frame through the section connecting assembly.

[0012] In a preferred embodiment, the inter-segment connecting assembly comprises an upper inter-segment connecting member and a lower inter-segment connecting member, both of which are bent plates; the upper inter-segment connecting member connects the vertical beam with the web of the front segment oblique longitudinal beam or the web of the rear segment oblique longitudinal beam, and the lower inter-segment connecting member connects the lower panel of the front segment oblique longitudinal beam or the lower panel of the rear segment oblique longitudinal beam with the vertical beam.

[0013] In a preferred embodiment, the vertical height of the lower layer plane structure is lower than the vertical height of the upper layer plane structure or the middle layer plane structure.

[0014] The application can also adopt the following solutions:

[0015] A new energy heavy-duty vehicle chassis structure comprises a frame, the frame is divided into a frame front segment, a frame middle segment and a frame rear segment along the length direction, the frame front segment and the frame middle segment and the frame middle segment and the frame rear segment are detachably connected through an inter-segment connecting assembly, the frame middle segment is a frame type multi-layer structure, and the frame type multi-layer structure is at least divided into two accommodation spaces in the height direction; and a hydrogen fuel cell system, the hydrogen fuel cell system comprises a hydrogen fuel cell assembly and a hydrogen storage tank, the hydrogen fuel cell assembly is arranged in the frame front segment, and the hydrogen storage tank is arranged on the side surface of the accommodation space.

[0016] The application further provides a vehicle comprising the chassis structure.

[0017] As can be seen from the above description of the application, compared with the prior art, the application has the following advantages:

[0018] 1. The frame is divided into a frame front segment, a frame middle segment and a frame rear segment along the length direction, the three frame segments are connected through an inter-segment connecting assembly, are detachable, the length and width of the frame middle segment are changed to adjust the wheelbase change and match more battery pack size requirements. Meanwhile, the frame middle segment adopts a frame type multi-layer structure, and the frame type multi-layer structure is at least divided into multiple accommodation spaces in the vertical direction, and the battery pack is arranged in the accommodation space in a side extraction manner, which reduces the requirements for the maintenance equipment and site.

[0019] 2. The application increases the anti-collision beam and the energy absorption structure in the frame front segment, and simultaneously connects with the cross beam structure and the frame middle segment structure to form a complete space force transmission path, improves the front collision safety performance of the vehicle, changes the original heavy-duty vehicle plane frame structure into a space structure, and improves the overall torsional stiffness of the chassis structure. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a three-dimensional schematic view of the chassis structure of the first embodiment of the application.

[0021] Figure 2 2 is a perspective schematic diagram of a vehicle frame according to an embodiment of the present invention.

[0022] Figure 3 It is a perspective schematic diagram of the front section of a frame according to an embodiment of the present invention.

[0023] Figure 4 This is a three-dimensional schematic diagram of a front downwardly curved cross beam according to an embodiment of the present invention.

[0024] Figure 5 It is a three-dimensional schematic diagram of the middle section of a frame according to an embodiment of the present invention.

[0025] Figure 6 for Figure 5 Schematic diagram of the decomposition.

[0026] Figure 7 2 is a perspective schematic diagram of the rear section of a vehicle frame according to an embodiment of the present invention.

[0027] Figure 8 It is a three-dimensional schematic diagram of the chassis structure of the second embodiment of the present invention. DETAILED DESCRIPTION

[0028] The following describes specific embodiments of the present invention with reference to the accompanying drawings. Numerous details are provided below to provide a comprehensive understanding of the present invention, but those skilled in the art will appreciate that the present invention can be practiced without these details. Well-known components, methods, and processes are not described in detail below.

[0029] Example 1

[0030] This embodiment provides a new energy heavy-duty vehicle chassis structure, such as Figure 1 As shown, it includes a vehicle frame 100 and a power battery system 200 .

[0031] like Figure 2 As shown, the vehicle frame 100 is divided into a front section 110, a middle section 120, and a rear section 130 along the length direction. The front section 110 and the middle section 120, as well as the middle section 120 and the rear section 130, are both bolted together via inter-section connection assemblies 140, allowing for detachable assembly.

[0032] like Figure 2 and Figure 3 As shown, the front section 110 of the frame includes two front straight longitudinal beams 111, two front oblique longitudinal beams 112, a front straight cross beam 113, two front downward curved cross beams 114, a front anti-collision beam 115, two front energy absorbing beams 116, a vertical beam structure 117, a plurality of first longitudinal connecting components 118, and a plurality of second longitudinal connecting components 119.

[0033] like Figure 3As shown, the front straight longitudinal beam 111 is detachably connected with the front inclined longitudinal beam 112, and the front inclined longitudinal beam 112 is detachably connected with the middle section 120 through the inter-section connecting assembly 140. The front straight longitudinal beam 111 is in a U-shaped structure, and the U-shaped opening faces the inner side of the frame 100.

[0034] As shown, Figure 3 the front inclined longitudinal beam 112 is also in a U-shaped structure, and the U-shaped opening also faces the inner side of the frame 100. The front end of the front inclined longitudinal beam 112 covers the rear end of the front straight longitudinal beam 111, and the two are connected through bolts.

[0035] As shown, Figure 4 the front lower bending cross beam 114 is composed of a pair of longitudinally parallel cutting flat plates 1141 and a transversely bent plate 1142. The upper portion of the transversely bent plate 1142 is provided with bolt holes 1140 for connecting with the web of the front straight longitudinal beam 111. The transversely bent plate 1142 is bent at the outer end hard point position of the swing arm of the double-fork independent suspension. The front lower bending cross beam 114 is connected with the outer ends of the upper and lower swing arms of the double-fork independent suspension through bolt mounting points and holes provided at different heights, and the mounting and movement space of the outer end hinge of the swing arm is left through the holes.

[0036] As shown, Figure 3 the front anti-collision beam 115 is a rectangular pipe in a Chinese character type. The front energy-absorbing beam 116 is detachably connected with the vertical beam structure 117. The front energy-absorbing beam 116 is a rectangular pipe, and a plurality of collapse guide holes with a spacing of 50-75 mm are formed on the longitudinal edges or four longitudinal sides of the rectangular pipe. The guide holes are circular or waist-shaped.

[0037] As shown, Figure 3 the vertical beam structure 117 is a reverse "π" type structure, which is mainly composed of a rectangular cross beam and two rectangular vertical beams. The other ends of the two rectangular vertical beams are welded with an L-shaped bent plate, and the L-shaped bent plate is bolted with the front straight longitudinal beam 111.

[0038] As shown, Figure 3 Preferably, a rectangular pipe is welded at each end of the rectangular cross beam of the vertical beam structure 117. The inner length and width of the rectangular pipe are equal to the outer length and width of the front energy-absorbing beam 116. The front energy-absorbing beam 116 is embedded in the rectangular pipe, and then bolted. This way is convenient for replacement and maintenance of the front energy-absorbing beam 116 and the front anti-collision beam 115.

[0039] As shown, Figure 3As shown, the vertical beam structure 117 detachably connects the front bumper beam 115 and the front energy beam 116 to the front straight longitudinal beam 111. The vertical beam structure 117 is connected to the front segment lower cross beam 114 near the front end of the frame through a first longitudinal connecting component 118. The connection position of the first longitudinal connecting component 118 to the vertical beam structure 117 is longitudinally consistent with the connection position of the front energy beam 116 to the vertical beam structure 117, achieving direct transmission of the front collision force.

[0040] As shown in FIG. 1, the front straight longitudinal beam 111 is connected to the front segment lower cross beam 114 through a second longitudinal connecting component 119. The second longitudinal connecting component 119 is preferably an L-shaped bent plate with bolt holes at both longitudinal ends for connection to the front segment lower cross beam 114. The front segment lower cross beam 114 near the rear end of the frame is connected to the middle segment 120 of the frame through the first longitudinal connecting component 118 near the rear end of the frame. Figure 3

[0041] As shown in FIG. 1, the front segment lower cross beam 114 is connected through a second longitudinal connecting component 119. The second longitudinal connecting component 119 is preferably an L-shaped bent plate with bolt holes at both longitudinal ends for connection to the front segment lower cross beam 114. The front segment lower cross beam 114 near the rear end of the frame is connected to the middle segment 120 of the frame through the first longitudinal connecting component 118 near the rear end of the frame. Figure 3

[0042] Through the connection of the front bumper beam 115, the front energy beam 116, the vertical beam structure 117, the front segment lower cross beam 114, the first longitudinal connecting component 118, and the second longitudinal connecting component 119, a lower force transmission path is formed, which, together with an upper force transmission path composed of the front straight longitudinal beam 111 and the front inclined longitudinal beam 112, transmits the front collision force of the front collision. The front bumper beam 115 and the front energy beam 116 can absorb the front collision energy through deformation and collapse. In low-speed collisions, the partial deformation of the replaceable front bumper beam 115 and the front energy beam 116 absorbs the collision energy, avoiding the collision deformation of other chassis structures.

[0043] As shown in FIG. 1, the middle segment 120 of the frame is a three-layer frame structure, including an upper layer plane structure 121, a middle layer plane structure 122, a lower layer plane structure 123, and a plurality of vertical beams 124. Each plane structure is rectangular frame-shaped, and each corner of the upper layer plane structure is connected to the corresponding middle layer plane structure and lower layer plane structure through a vertical beam, forming a space frame structure. The three-layer structure is divided into a first accommodation space 125 and a second accommodation space 126 in the height direction. Figure 5 Figure 6 As shown in FIG. 1, the middle segment 120 of the frame is a three-layer frame structure, including an upper layer plane structure 121, a middle layer plane structure 122, a lower layer plane structure 123, and a plurality of vertical beams 124. Each plane structure is rectangular frame-shaped, and each corner of the upper layer plane structure is connected to the corresponding middle layer plane structure and lower layer plane structure through a vertical beam, forming a space frame structure. The three-layer structure is divided into a first accommodation space 125 and a second accommodation space 126 in the height direction.

[0044] As shown in FIG. 1, the middle segment 120 of the frame is a three-layer frame structure, including an upper layer plane structure 121, a middle layer plane structure 122, a lower layer plane structure 123, and a plurality of vertical beams 124. Each plane structure is rectangular frame-shaped, and each corner of the upper layer plane structure is connected to the corresponding middle layer plane structure and lower layer plane structure through a vertical beam, forming a space frame structure. The three-layer structure is divided into a first accommodation space 125 and a second accommodation space 126 in the height direction. Figure 5 ​​​As shown, the first receiving space 125 and the second receiving space 126 are both frame structures with front-to-back and left-to-right permeability. The first lithium battery assembly 210 and the second lithium battery assembly 220 can be installed from the side into the first receiving space 125 and the second receiving space 126. If the lithium battery assembly needs to be repaired, it can also be conveniently disassembled, and the operation is convenient.

[0045] The frame structure of the middle section of the vehicle frame can be adjusted according to the shape, size and arrangement of the lithium battery assembly, thereby further improving the universality of the chassis structure.

[0046] As shown in Figure 5 and Figure 6 The upper layer plane structure 121 includes upper layer longitudinal beams 1211, upper layer transverse beams 1212, upper layer diagonal beams 1213, and upper connecting pieces 1214. The middle layer plane structure 122 includes middle layer longitudinal beams 1221, middle layer transverse beams 1222, middle layer diagonal beams 1223, and middle connecting pieces 1223. The lower layer plane structure 123 includes lower layer longitudinal beams 1231, lower layer transverse beams 1232, lower layer diagonal beams 1233, and lower connecting pieces 1234. Two upper layer longitudinal beams 1211 and two upper layer transverse beams 1212 are connected by the upper connecting pieces 1214 to form a rectangular plane. The midpoints of the parallel upper layer longitudinal beams 1211 are connected to two upper layer transverse beams by the upper connecting pieces 1214 to form a herringbone plane. The upper layer diagonal beams 1213 are connected to the upper layer transverse beams 1212 by the upper connecting pieces 1214. The structure combination of the middle layer plane structure 122 and the lower layer plane structure 123 is similar to that of the upper layer plane structure 121, and will not be described again.

[0047] As shown in Figure 5 The vertical height of the lower layer plane structure 123 is lower than the vertical heights of the upper layer plane structure 121 and the middle layer plane structure 122, so as to reduce the vertical height of the middle section 120 of the vehicle frame, increase the ground clearance of the vehicle frame, and achieve lightweight at the same time. The vertical height of the lower layer plane structure 123 is generally about half of the vertical heights of the upper layer plane structure 121 and the middle layer plane structure 122.

[0048] The structural members of the middle section 120 of the vehicle frame are mainly composed of angle steels, and the connecting pieces are bent plates with bolt holes, which are connected by bolts, and the assembly is convenient.

[0049] In order to meet the requirements of installing and repairing the first lithium battery assembly 210 and the second lithium battery assembly 220 through the side, the distance between the upper layer longitudinal beams 1211 and the middle layer longitudinal beams 1221, and the distance between the middle layer longitudinal beams 1221 and the lower layer longitudinal beams 1231 are greater than the height of the commonly seen lithium battery pack on the market.

[0050] As shown in Figure 3 and Figure 7As shown, the rear section of the frame includes a rear section straight longitudinal beam 131, a rear section oblique longitudinal beam 132, and a rear section cross beam 133. The rear section straight longitudinal beam 131 is connected to the rear section oblique longitudinal beam 132, and the rear section oblique longitudinal beam 132 is detachably connected to the upper layer planar structure 121 of the middle section 120 through the section connection assembly 140.

[0051] As shown in FIG. 1, the front section oblique longitudinal beam 112 is a U-shaped structure, and the U-shaped opening faces the inside of the frame 100. The rear section oblique longitudinal beam 132 is also a U-shaped structure, and the U-shaped opening faces the inside of the frame 100. The front end of the rear section oblique longitudinal beam 132 covers the rear end of the rear section straight longitudinal beam 131, and the two are connected by bolts. Figure 7

[0052] As shown in FIG. 1, the front section oblique longitudinal beam 112 is a U-shaped structure, and the U-shaped opening faces the inside of the frame 100. The rear section oblique longitudinal beam 132 is also a U-shaped structure, and the U-shaped opening faces the inside of the frame 100. The front end of the rear section oblique longitudinal beam 132 covers the rear end of the rear section straight longitudinal beam 131, and the two are connected by bolts. Figure 2 Figure 3 Figure 7 As shown in FIG. 1, the section connection assembly 140 includes an upper section connection piece 141 and a lower section connection piece 142. Both the upper section connection piece 141 and the lower section connection piece 142 are bent plates. The upper section connection piece 141 connects the web of the front section oblique longitudinal beam 112 / the web of the rear section oblique longitudinal beam 132 to the vertical beam 124 of the middle section 120 of the frame. The lower section connection piece 142 connects the lower panel of the front section oblique longitudinal beam 112 / the lower panel of the rear section oblique longitudinal beam 132 to the vertical beam 124 of the middle section 120 of the frame.

[0053] The chassis structure of the present application can adjust the wheelbase by adjusting the longitudinal dimensions of the front section oblique longitudinal beam 112, the rear section oblique longitudinal beam 132, and the middle section 120 of the frame, thereby deriving different wheelbase vehicle models. The length and width of the middle section 120 of the frame can be replaced or increased or decreased according to actual endurance requirements or different vehicle models, thereby adapting to the requirements of various vehicle models and facilitating daily maintenance and repair.

[0054] Embodiment Two

[0055] As shown in FIG. 1, the front section oblique longitudinal beam 112 is a U-shaped structure, and the U-shaped opening faces the inside of the frame 100. The rear section oblique longitudinal beam 132 is also a U-shaped structure, and the U-shaped opening faces the inside of the frame 100. The front end of the rear section oblique longitudinal beam 132 covers the rear end of the rear section straight longitudinal beam 131, and the two are connected by bolts. Figure 8 As shown in FIG. 1, the front section oblique longitudinal beam 112 is a U-shaped structure, and the U-shaped opening faces the inside of the frame 100. The rear section oblique longitudinal beam 132 is also a U-shaped structure, and the U-shaped opening faces the inside of the frame 100. The front end of the rear section oblique longitudinal beam 132 covers the rear end of the rear section straight longitudinal beam 131, and the two are connected by bolts.

[0056] Embodiment Three

[0057] The present embodiment provides a vehicle including any one of the chassis structures of the above two embodiments.

[0058] ​​​The above merely illustrates the specific embodiments of the present application, but the design concept of the present application is not limited thereto, and any non-essential modification of the present application by using the concept shall be deemed as the infringement of the protection scope of the present application.

Claims

1. A new energy heavy-duty vehicle chassis structure, characterized in that: include: A vehicle frame, wherein the frame is divided into a front frame section, a middle frame section, and a rear frame section along a length direction, the front frame section and the middle frame section, as well as the middle frame section and the rear frame section, are detachably connected via an inter-segment connection assembly, the middle frame section is a frame-type multi-layer structure, and the frame-type multi-layer structure is divided into at least two receiving spaces in a height direction; and a power battery system, the power battery system comprising at least two lithium battery assemblies, the lithium battery assemblies being correspondingly mounted in the receiving space; The frame-type multi-layer structure is a frame-type three-layer structure, which is divided into a first receiving space and a second receiving space in the height direction. The power battery system includes a first lithium battery assembly and a second lithium battery assembly. The first receiving space and the second receiving space are both transparent frame structures in the front, back, left and right directions. The first lithium battery assembly and the second lithium battery assembly are respectively arranged in the first receiving space and the second receiving space in a side-drawn manner. The frame-type multi-layer structure includes an upper plane structure, a middle plane structure, a lower plane structure and a plurality of vertical beams. Each corner of the upper plane structure is connected to the middle plane structure and the lower plane structure respectively by a vertical beam to form a space frame structure. The front section of the frame includes two front straight longitudinal beams, two front oblique longitudinal beams, a front straight cross beam, two front downward curved cross beams, a front anti-collision beam, two front energy-absorbing beams, a vertical beam structure, a plurality of first longitudinal connection components, and a plurality of second longitudinal connection components; the rear end of each front straight longitudinal beam is detachably connected to the front end of each front oblique longitudinal beam, and the rear end of each front oblique longitudinal beam is detachably connected to the middle section of the frame through the inter-segment connection component; the two front downward curved cross beams are spaced apart and connected between the two front straight longitudinal beams, and the vertical beam structure The structure is an inverted "π"-shaped structure, which is bolted to the front straight longitudinal beam. The two front energy-absorbing beams are detachably connected to the vertical beam structure. The front anti-collision beam is arranged below the front straight transverse beam and is bolted to the front energy-absorbing beam. The vertical beam structure is connected to the front downward-curved transverse beam near the front end of the frame through the first longitudinal connecting assembly. The two front downward-curved transverse beams are connected by a plurality of second longitudinal connecting assemblies. The front downward-curved transverse beam near the rear end of the frame is connected to the middle section of the frame through the first longitudinal connecting assembly. The front section downward curved cross beam is formed by connecting a pair of longitudinally parallel cutting flat plates and a transverse bending plate. A number of bolt holes connected to the web of the front section straight longitudinal beam are opened on the upper part of both ends of the transverse bending plate. The transverse bending plate is hinged to the outer end of the double wishbone front suspension swing arm, and the transverse bending plate is bent accordingly at the hard point position of the outer end of the double wishbone suspension swing arm.

2. A new energy heavy-duty vehicle chassis structure according to claim 1, characterized in that: The rear section of the frame includes a rear straight longitudinal beam, a rear oblique longitudinal beam and a rear cross beam. The rear straight longitudinal beam is detachably connected to the rear oblique longitudinal beam, and the rear oblique longitudinal beam is detachably connected to the upper plane structure of the middle section of the frame via the inter-section connection assembly.

3. A new energy heavy-duty vehicle chassis structure as claimed in claim 2, characterized in that: The inter-segment connection assembly includes an upper inter-segment connection member and a lower inter-segment connection member, and the upper inter-segment connection member and the lower inter-segment connection member are both bent plates; the upper inter-segment connection member connects the vertical beam with the web of the front section oblique longitudinal beam or the web of the rear section oblique longitudinal beam, and the lower inter-segment connection member connects the lower panel of the front section oblique longitudinal beam or the lower panel of the rear section oblique longitudinal beam with the vertical beam.

4. The new energy heavy-duty vehicle chassis structure according to claim 1, characterized in that: The vertical height of the lower plane structure is lower than the vertical height of the upper plane structure or the middle plane structure.

5. A vehicle, characterized in that: It comprises the chassis structure as described in any one of claims 1-4.

Images