Transport vehicle chassis structure

Abstract

The invention provides a transport vehicle chassis structure, and belongs to the technical field. The transport vehicle is of a chassis structure. The transport vehicle chassis structure includes: a chassis frame configured to extend in a length direction; the wheels comprise a front tire assembly and a rear tire assembly, and the front tire assembly and the rear tire assembly are installed at the front end and the rear end of the bottom of the chassis frame respectively; the suspension comprises a front independent suspension assembly and a rear independent suspension assembly, the front independent suspension assembly is mounted between the chassis frame and the front tire assembly, and the rear independent suspension assembly is mounted between the chassis frame and the rear tire assembly; and the gravity center adjusting assembly is configured to be used for adjusting the height of the chassis frame. According to the transport vehicle chassis structure, the height of the chassis frame can be freely increased and decreased, the adaptability to terrains is high, and goods can be flexibly transported.

Description

Technical Field

[0001] The present disclosure relates to the technical field of vehicle devices, and in particular to a chassis structure of a transport vehicle. Background Art

[0002] Transport vehicles mainly include ordinary trucks, multi-purpose trucks, full-trailer tractors, off-road trucks, special work vehicles, special trucks, etc. The chassis of transport vehicles are gradually innovated, and the load-bearing capacity and volume are gradually increasing. At present, transport vehicles are developing in the direction of intelligence, large-scale and flexibility.

[0003] Patent CN209870503U discloses a chassis structure of a transport vehicle. The middle part of the crossbeam is set as a concave structure so that the upper surface of the middle part of the crossbeam is lower than the upper surface of the longitudinal beam, and a certain space is reserved above the middle part of the crossbeam. When transporting some columnar objects, part of the columnar object is embedded in the reserved space, so that the center of gravity of the transported object is lowered, the stability of the vehicle is improved, the loading height of the object is reduced, and the vehicle's passability is improved.

[0004] However, the chassis structure of the transport vehicle disclosed in patent CN209870503U has poor adaptability to complex terrain, limited carrying capacity and is bulky, making it difficult to meet the requirements of flexible transportation and automatic lifting of the chassis height. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art and provide a transport vehicle chassis structure that can realize the free lifting of the chassis frame height, has strong adaptability to terrain, and realizes flexible transportation of goods.

[0006] In order to achieve the above-mentioned invention object, the present invention adopts the following technical solutions: The present disclosure provides a transport vehicle chassis structure, comprising: a chassis frame configured to extend in a length direction; The wheels are configured as a front tire assembly and a rear tire assembly, wherein the front tire assembly and the rear tire assembly are respectively mounted at the front end and the rear end of the bottom of the chassis frame; The suspension is configured as a front independent suspension assembly and a rear independent suspension assembly, wherein the front independent suspension assembly is installed between the chassis frame and the front tire assembly, and the rear independent suspension assembly is installed between the chassis frame and the rear tire assembly; The center of gravity adjustment assembly is configured to adjust the height of the chassis frame.

[0007] In an exemplary embodiment of the present disclosure, the chassis frame comprises: A longitudinal beam configured as two longitudinal beams parallel to each other, the two longitudinal beams extending in a length direction; and at least two cross beams, configured to connect two longitudinal beams parallel to each other; The longitudinal beam and the cross beam are both box beams, and the thickness of the side beam on one side of the longitudinal beam and the cross beam is greater than the thickness of the side beam on the other side.

[0008] In an exemplary embodiment of the present disclosure, the crossbeam comprises: Two horizontal segments are configured such that the two horizontal segments are located on the same straight line and are symmetrically arranged on the longitudinal beam on the same side; and The arc segment is configured to connect the two horizontal segments, and the opening of the arc segment is arranged upward.

[0009] In an exemplary embodiment of the present disclosure, the front tire assembly and the rear tire assembly both include: The two tires are configured such that the two tires are located on the same straight line, and the two tires are symmetrically arranged on both sides of the chassis frame.

[0010] In an exemplary embodiment of the present disclosure, the front independent suspension assembly and the rear independent suspension assembly both include: A connecting seat is arranged on the outer side frame of the chassis frame, the cross section of the connecting seat is triangular, a rotating shaft is rotatably arranged in the connecting seat, the rotating shaft is slidably provided with two sliders and a first spring, the first spring is located between the two sliders, and the two ends of the first spring are respectively connected to the slider on the same side; A wheel frame is arranged below the connecting seat, a lifting shock absorber is installed on the wheel frame, the lifting shock absorber is configured as an explosion-proof lifting shock absorber, and the wheel is rotatably installed on the wheel frame; and At least one telescopic assembly is configured to connect the connection seat and the lifting shock absorber to adjust the distance between the wheel and the chassis frame.

[0011] In an exemplary embodiment of the present disclosure, the telescopic assembly includes a first swing rod and a second swing rod, the first swing rod and the second swing rod are cross-rotatably connected, and one end of the first swing rod and the second swing rod are rotationally connected to the slider on the same side; The other ends of the first swing rod and the second swing rod are rotatably connected to one end of the connecting rod, the other ends of the two connecting rods are rotatably connected and rotatably connected to the outer wall of the lifting shock absorber, and the extended end of the lifting shock absorber is rotatably connected to the connection between the first swing rod and the second swing rod.

[0012] In an exemplary embodiment of the present disclosure, the number of the telescopic assemblies is at least two, and an air spring is provided between adjacent telescopic assemblies; The lift shock absorber is configured as a pneumatic shock absorber.

[0013] In an exemplary embodiment of the present disclosure, the center of gravity adjustment assembly includes: The third swing rod is configured as two, the two third swing rods are arranged below the chassis frame, and one end of the two third swing rods is rotatably connected to the wheel frame on the same side; A transmission box, configured as an explosion-proof transmission box, is arranged above the third swing rod, a first screw and a second screw are arranged in a vertical direction in the transmission box, the bottom end of the first screw extends out of the transmission box and is movably connected to the other ends of the two third swing rods, the first screw is threadedly connected to the bottom wall of the transmission box, the top end of the second screw extends out of the transmission box and is connected to the support block, and the second screw is threadedly connected to the top wall of the transmission box; A drive motor is configured as an explosion-proof motor, wherein an output end of the drive motor is connected to one end of a transmission shaft, and a first worm and a second worm are arranged on the transmission shaft at intervals; A first worm gear is provided on the threaded sleeve of the first screw, and a second worm gear is provided on the threaded sleeve of the second screw. The first worm gear and the second worm gear are rotatably mounted in the transmission box respectively; The worm wheel is meshed with the worm for transmission.

[0014] In an exemplary embodiment of the present disclosure, the center of gravity adjustment assembly further includes: The hydraulic cylinder is arranged on the inner wall of one side of the transmission box, the driving motor is installed at the movable end of the hydraulic cylinder, and the hydraulic cylinder is used to drive the driving motor to move linearly in the transmission box.

[0015] In an exemplary embodiment of the present disclosure, a limit block is respectively provided at the top end of the first screw and the bottom end of the second screw.

[0016] Beneficial effects of the present invention: (1) The chassis structure of the transport vehicle adjusts the height of the chassis frame through the center of gravity adjustment component, and at the same time adjusts the distance between the same pair of wheels. The chassis frame and the wheels are connected through an independent suspension assembly, which facilitates the change of the height of the chassis frame, realizes the free lifting and lowering of the height of the chassis frame, adjusts the center of gravity of the vehicle, improves the adaptability to the terrain, and can realize flexible transportation of goods.

[0017] (2) The chassis frame of the transport vehicle chassis structure adopts a variable cross-section design to improve the strength and rigidity of the chassis frame and prevent the chassis frame from deforming during driving.

[0018] (3) The chassis structure of the transport vehicle adopts an explosion-proof design to improve the protection capability of the chassis structure and increase the service life of the chassis structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification are used to explain the principles of the present disclosure. Obviously, the accompanying drawings described below are only some embodiments of the present disclosure, and for ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0020] Figure 1 This is a schematic structural diagram of a chassis structure of a transport vehicle in one embodiment of the present disclosure; Figure 2 A top view of a chassis frame in one embodiment of the present disclosure; Figure 3 This is a schematic diagram of a side view of a chassis structure of a transport vehicle in one embodiment of the present disclosure; Figure 4 This is a schematic structural diagram of an independent suspension assembly in one embodiment of the present disclosure; Figure 5 This is a schematic diagram of the structure of a transmission box in one embodiment of the present disclosure; Figure 6 This is a diagram of a worm gear transmission in one embodiment of the present disclosure.

[0021] Description of reference numerals: 1. chassis frame; 101. longitudinal beam; 102. cross beam; 1021. horizontal section; 1022. arc section; 2. wheel; 201. front tire assembly; 202. rear tire assembly; 203. tire; 3. suspension; 301. front independent suspension assembly; 302. rear independent suspension assembly; 303. connecting seat; rotating shaft; 304. rotating shaft; 305. slider; 306. first spring; 307. wheel frame; 308. lifting shock absorber; 309. first swing arm; 310. second swing arm; 311. connecting rod; 312. air spring; 4. third swing arm; 5. transmission box; 6. first screw; 7. second screw; 8. support block; 9. drive motor; 10. transmission shaft; 11. first worm; 12. second worm; 13. first worm wheel; 14. second worm wheel; 15. hydraulic cylinder; 16. limit block. DETAILED DESCRIPTION

[0022] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present disclosure will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted. In addition, the drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale.

[0023] Although relative terms such as "upper" and "lower" are used in this specification to describe the relative relationship of one component of the illustration to another component, these terms are used in this specification only for convenience, such as according to the orientation of the examples described in the drawings. It is understood that if the device of the illustration is turned upside down, the component described as "upper" will become the component "lower". When a structure is "on" other structures, it may mean that the structure is formed integrally on the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure through another structure.

[0024] The terms "a", "an", "the", "said" and "at least one" are used to indicate the presence of one or more elements / components / etc.; the terms "including" and "having" are used to express an open-ended inclusive meaning and mean that additional elements / components / etc. may exist in addition to the listed elements / components / etc.; the terms "first", "second" and "third" etc. are used merely as labels and are not intended to limit the quantity of their objects.

[0025] The present disclosure provides a transport vehicle chassis structure, see Figure 1 and Figure 3 , including: a chassis frame 1, which is configured to extend along the length direction; a wheel 2, which is configured as a front tire assembly 201 and a rear tire assembly 202, and the front tire assembly 201 and the rear tire assembly 202 are respectively installed at the front end and the rear end of the bottom of the chassis frame 1; a suspension 3, which is configured as a front independent suspension assembly 301 and a rear independent suspension assembly 302, and the front independent suspension assembly 301 is installed between the chassis frame 1 and the front tire assembly 201, and the rear independent suspension assembly 302 is installed between the chassis frame 1 and the rear tire assembly 202; a center of gravity adjustment component, which is configured to be used to adjust the height of the chassis frame 1.

[0026] In the disclosed embodiment, the chassis structure of the transport vehicle is composed of a chassis frame 1, wheels 2, suspension 3 and a center of gravity adjustment component. The chassis frame 1 extends in the length direction, and the wheels 2 are divided into a front tire assembly 201 and a rear tire assembly 202. The front tire assembly 201 is installed at the front end of the chassis frame 1, and the rear tire assembly 202 is installed at the rear end of the chassis frame 1. The suspension 3 is divided into a front independent suspension assembly 301 and a rear independent suspension assembly 302. The front independent suspension assembly 301 is installed between the chassis frame 1 and the front tire assembly 201, and the rear independent suspension assembly 302 is installed between the chassis frame 1 and the rear tire assembly 202, that is, the number of the front independent suspension assembly 301 and the rear independent suspension assembly 302 are both two, and a center of gravity adjustment component is installed below the chassis frame 1, and the height of the chassis frame 1 is raised and lowered by the center of gravity adjustment component.

[0027] Compared with the chassis structure of existing transport vehicles, the chassis structure of this transport vehicle adjusts the height of the chassis frame through the center of gravity adjusting component, and at the same time adjusts the distance between the same pair of wheels, and connects the chassis frame and the wheels through an independent suspension assembly, which facilitates the change of the height of the chassis frame, realizes the free lifting of the height of the chassis frame, adjusts the center of gravity of the vehicle, improves the adaptability to the terrain, and can realize flexible transportation of goods.

[0028] In one embodiment of the present disclosure, see Figure 2 The chassis frame 1 includes: a longitudinal beam 101, which is configured as two longitudinal beams 101 parallel to each other, and the two longitudinal beams 101 extend along the length direction; and at least two cross beams 102, which are configured to connect the two longitudinal beams 101 parallel to each other; the longitudinal beams 101 and the cross beams 102 are both box beams, and the thickness of the side beam on one side of the longitudinal beams 101 and the cross beams 102 is greater than the thickness of the side beam on the other side. In this way, the longitudinal beams 101 and the cross beams 102 adopt a variable cross-section design, which can improve the strength and rigidity of the chassis frame 1 and prevent the chassis frame 1 from deforming during the vehicle's driving.

[0029] In an example, there are two cross beams 102 , and the two cross beams 102 are installed at both ends of two longitudinal beams 101 that are parallel to each other.

[0030] In another example, the number of the cross beams 102 is more than two, wherein two cross beams 102 are installed at both ends of two mutually parallel longitudinal beams 101 , and the remaining cross beams 102 are evenly arranged between the two mutually parallel longitudinal beams 101 .

[0031] In one embodiment of the present disclosure, see Figure 3 The cross beam 102 includes: two horizontal sections 1021, which are configured to be located on the same straight line and symmetrically arranged on the longitudinal beam 101 on the same side; and an arc section 1022, which is configured to connect the two horizontal sections 1021, and the opening of the arc section 1022 is arranged upward. In this way, the center of gravity height of the chassis frame 1 can be lowered, which is convenient for transporting goods through the chassis frame 1 and improves the stability of transportation; at the same time, the strength of the cross beam 102 is improved, thereby improving the strength of the chassis frame 1.

[0032] In one embodiment of the present disclosure, the front tire assembly 201 and the rear tire assembly 202 each include two tires 203, which are configured such that the two tires 203 are located on the same straight line, and the two tires 203 are symmetrically arranged on both sides of the chassis frame 1. In this way, it is possible to facilitate driving the transport vehicle and improve the driving stability of the vehicle.

[0033] In one embodiment of the present disclosure, see Figure 1 , Figure 3 and Figure 4The front independent suspension assembly 301 and the rear independent suspension assembly 302 both include: a connecting seat 303, which is arranged on the outer side frame of the chassis frame 1, the cross section of the connecting seat 303 is triangular, a rotating shaft 304 is rotatably arranged in the connecting seat 303, and the rotating shaft 304 is slidably provided with two sliders 305 and a first spring 306, the first spring 306 is located between the two sliders 305, and the two ends of the first spring 306 are respectively connected to the sliders 305 on the same side; a wheel frame 307, which is arranged below the connecting seat 303, a lifting shock absorber 308 is installed on the wheel frame 307, and the lifting shock absorber 308 is configured as an explosion-proof lifting shock absorber 308, and the wheel 2 is rotatably installed on the wheel frame 307; and at least one telescopic component is configured to connect the connecting seat 303 and the lifting shock absorber 308 to adjust the distance between the wheel 2 and the chassis frame 1. In this way, the flexibility and adaptability of the suspension 3 can be improved, the suspension hardness can be automatically adjusted according to the road conditions, the center of gravity height can be automatically adapted, and the adaptability to the terrain can be improved.

[0034] In one embodiment of the present disclosure, see Figure 1 , Figure 3 and Figure 4 The telescopic assembly includes a first swing rod 309 and a second swing rod 310, the first swing rod 309 and the second swing rod 310 are cross-rotatably connected, one end of the first swing rod 309 and the second swing rod 310 is rotatably connected to the slider 305 on the same side; the other end of the first swing rod 309 and the second swing rod 310 is rotatably connected to one end of the connecting rod 311, the other ends of the two connecting rods 311 are rotatably connected and rotatably connected to the outer wall of the lifting shock absorber 308, and the extended end of the lifting shock absorber 308 is rotatably connected to the connection between the first swing rod 309 and the second swing rod 310; the number of telescopic assemblies is at least two, and an air spring 312 is arranged between adjacent telescopic assemblies; the lifting shock absorber 308 is configured as a pneumatic shock absorber. In this way, the hardness of the suspension 3 can be automatically adjusted according to the road conditions, the adaptability to the terrain can be improved, and the flexible transportation of goods can be realized.

[0035] It can be understood that during the driving of the vehicle, the lifting shock absorber 308 is extended and retracted, driving the telescopic assembly to move up and down, driving the two connecting rods 311 to swing around the connection between them and the lifting shock absorber 308, driving the first swing rod 309 and the second swing rod 310 to swing around the connection between them, realizing the extension and retraction of the telescopic assembly, so that the air spring 312 is extended and retracted; the swinging of the first swing rod 309 and the second swing rod 310 drives the two sliders 305 to move closer to or away from each other on the rotating shaft 304, driving the first spring 306 to extend and retract, realizing buffering of the chassis frame 1, realizing automatic adjustment of the hardness of the suspension 3 according to the road conditions, and improving the adaptability to the terrain.

[0036] In one embodiment of the present disclosure, see Figure 3 , Figure 5 and Figure 6 The center of gravity adjustment component includes: a third swing rod 4, which is configured as two, and the two third swing rods 4 are arranged below the chassis frame 1, and one end of the two third swing rods 4 is rotatably connected to the wheel frame 307 on the same side; a transmission box 5, which is configured as an explosion-proof transmission box 5, is arranged above the third swing rod 4, and a first screw rod 6 and a second screw rod 7 in a vertical direction are arranged in the transmission box 5, and the bottom end of the first screw rod 6 extends out of the transmission box 5 and is movably connected to the other ends of the two third swing rods 4, the first screw rod 6 is threadedly connected to the bottom wall of the transmission box 5, the top end of the second screw rod 7 extends out of the transmission box 5 and is connected to the support block 8, and the second screw rod 7 is threadedly connected to the top wall of the transmission box 5; a driving motor 9 is configured as an explosion-proof The output end of the motor and the driving motor 9 are connected to one end of the transmission shaft 10, and the transmission shaft 10 is provided with a first worm 11 and a second worm 12 at intervals; the first screw 6 is provided with a first worm wheel 13 on a threaded sleeve, and the second screw 7 is provided with a second worm wheel 14 on a threaded sleeve, and the first worm wheel 13 and the second worm wheel 14 are respectively rotatably installed in the transmission box 4; the worm wheel and the worm are meshed and driven; the center of gravity adjustment component also includes: a hydraulic cylinder 15, which is provided on the inner wall of one side of the transmission box 4, and the driving motor 9 is installed on the movable end of the hydraulic cylinder 15, and the hydraulic cylinder 15 is used to drive the driving motor 9 to move linearly in the transmission box 5; the top end of the first screw 6 and the bottom end of the second screw 7 are respectively provided with a limit block 16. In this way, the height of the chassis frame 1 can be adjusted, and the spacing between the same pair of wheels 2 can be adjusted at the same time, so as to adjust the center of gravity of the vehicle, which has strong flexibility and convenient vehicle transportation.

[0037] Optionally, the first screw 6 and the second screw 7 have the same structure, the first worm gear 13 and the second worm gear 14 have the same structure, the first screw 6 can be meshed with any one of the first worm gear 13 and the second worm gear 14 for transmission, and the second screw 7 can also be meshed with any one of the first worm gear 13 and the second worm gear 14 for transmission.

[0038] It can be understood that when the height of the chassis frame 1 needs to be adjusted, the hydraulic cylinder 15 is started to push the drive motor 9 to move, so that the first worm 11 is engaged with the second worm wheel 14 and the second worm 12 is not engaged with the first worm wheel 13, or the second worm 12 is engaged with the second worm wheel 14 and the first worm 11 is not engaged with the first worm wheel 13, and the drive motor 9 is started to rotate the second worm wheel 14 through the worm gear transmission, and the second screw 7 is moved upward through the threaded transmission between the second worm wheel 14 and the second screw 7, driving the support block 8 to move upward to support the chassis frame 1, and pushing the chassis frame 1 to move upward, thereby raising the center of gravity of the chassis frame 1.

[0039] Of course, when the support block 8 is pressed against the chassis frame 1, the hydraulic cylinder 15 can be started to drive the drive motor 9 to move, so that the first worm 11 is meshed with the first worm wheel 13 or the second worm 12 is meshed with the first worm wheel 13, and the drive motor 9 is started. The first worm wheel 13 is rotated through the worm gear transmission, and the first screw rod 6 is moved downward through the threaded transmission between the first worm wheel 13 and the first screw rod 6, driving the two third swing rods 4 to swing outward around the connection between the two third swing rods 4 and the first screw rod 6. The two third swing rods 4 push the tires 203 connected to them to move outward, driving the suspension 3 to swing outward, so that the center of gravity of the chassis frame 1 is lowered, and at the same time the distance between the two tires 203 is increased, which is convenient for passing through different obstacles.

[0040] Furthermore, the hydraulic cylinder 15 can be started to drive the drive motor 9 to move, so that the first worm 11 is meshed with the first worm wheel 13, and the second worm 12 is meshed with the second worm wheel 14. Then the drive motor 9 is started, and the first worm wheel 13 and the first screw 6 are threadedly transmitted, and the second worm wheel 14 and the second screw 7 are threadedly transmitted, so that the first screw 6 and the second screw 7 move simultaneously, thereby achieving the simultaneous adjustment of the center of gravity of the chassis frame 1 and the distance between the two tires 203, changing the state of the chassis frame 1, improving the adaptability to the terrain, and realizing flexible transportation of goods.

[0041] It can be understood that there are two groups of center of gravity adjustment components, that is, any one end of the chassis frame 1 can be adjusted, and both ends of the chassis frame 1 can also be adjusted at the same time to facilitate the driving of the vehicle.

[0042] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any modification, use or adaptation of the present disclosure, which follows the general principles of the present disclosure and includes common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the appended claims.

Claims

1. A transport vehicle chassis structure, characterized in that: include: A chassis frame (1) is configured to extend along a length direction; The wheel (2) is configured as a front tire assembly (201) and a rear tire assembly (202), wherein the front tire assembly (201) and the rear tire assembly (202) are respectively mounted at the front end and the rear end of the bottom of the chassis frame (1); The suspension (3) is configured as a front independent suspension assembly (301) and a rear independent suspension assembly (302), wherein the front independent suspension assembly (301) is installed between the chassis frame (1) and the front tire assembly (201), and the rear independent suspension assembly (302) is installed between the chassis frame (1) and the rear tire assembly (202); A center of gravity adjustment assembly is configured to adjust the height of the chassis frame (1).

2. The transport vehicle chassis structure according to claim 1, characterized in that: The chassis frame (1) comprises: A longitudinal beam (101), configured as two longitudinal beams (101) parallel to each other, the two longitudinal beams (101) extending along a length direction; and At least two cross beams (102) configured to connect two mutually parallel longitudinal beams (101); The longitudinal beam (101) and the cross beam (102) are both box beams, and the thickness of the side beam on one side of the longitudinal beam (101) and the cross beam (102) is greater than the thickness of the side beam on the other side.

3. The transport vehicle chassis structure according to claim 2, characterized in that: The crossbeam (102) comprises: The two horizontal sections (1021) are configured such that the two horizontal sections (1021) are located on the same straight line, and the two horizontal sections (1021) are symmetrically arranged on the longitudinal beam (101) on the same side; and The arc segment (1022) is configured to connect the two horizontal segments (1021), and the opening of the arc segment (1022) is arranged to face upward.

4. The transport vehicle chassis structure according to claim 1, characterized in that: The front tire assembly (201) and the rear tire assembly (202) both include: The two tires (203) are configured such that the two tires (203) are located on the same straight line, and the two tires (203) are symmetrically arranged on both sides of the chassis frame (1).

5. The transport vehicle chassis structure according to claim 1, characterized in that: The front independent suspension assembly (301) and the rear independent suspension assembly (302) both include: A connecting seat (303) is arranged on the outer side frame of the chassis frame (1); the cross section of the connecting seat (303) is triangular; a rotating shaft (304) is rotatably arranged inside the connecting seat (303); the rotating shaft (304) is slidably provided with two sliders (305) and a first spring (306); the first spring (306) is located between the two sliders (305), and two ends of the first spring (306) are respectively connected to the slider (305) on the same side; a wheel frame (307) disposed below the connecting seat (303); a lifting shock absorber (308) being mounted on the wheel frame (307); the lifting shock absorber (308) being configured as an explosion-proof lifting shock absorber (308); and the wheel (2) being rotatably mounted on the wheel frame (307); and At least one telescopic assembly is configured to connect the connection seat (303) and the lifting shock absorber (308) to adjust the distance between the wheel (2) and the chassis frame (1).

6. The transport vehicle chassis structure according to claim 5, characterized in that: The telescopic assembly comprises a first swing rod (309) and a second swing rod (310), the first swing rod (309) and the second swing rod (310) being cross-rotatably connected, and one end of the first swing rod (309) and the second swing rod (310) being rotationally connected to the slider (305) on the same side; The other ends of the first swing rod (309) and the second swing rod (310) are rotatably connected to one end of a connecting rod (311), the other ends of the two connecting rods (311) are rotatably connected and are rotatably connected to the outer wall of the lifting shock absorber (308), and the extended end of the lifting shock absorber (308) is rotatably connected to the connection between the first swing rod (309) and the second swing rod (310).

7. The transport vehicle chassis structure according to claim 5, characterized in that: The number of the telescopic components is at least two, and an air spring (312) is arranged between adjacent telescopic components; The lifting shock absorber (308) is configured as a pneumatic shock absorber.

8. The transport vehicle chassis structure according to claim 5, characterized in that: The center of gravity adjustment component includes: The third swing rod (4) is configured as two, the two third swing rods (4) being arranged below the chassis frame (1), and one end of the two third swing rods (4) being rotatably connected to the wheel frame (307) on the same side; A transmission box (5) is configured as an explosion-proof transmission box (5) and is arranged above the third swing rod (4). A first screw rod (6) and a second screw rod (7) are arranged in a vertical direction in the transmission box (5). The bottom end of the first screw rod (6) extends out of the transmission box (5) and is movably connected to the other ends of the two third swing rods (4). The first screw rod (6) is threadedly connected to the bottom wall of the transmission box (5). The top end of the second screw rod (7) extends out of the transmission box (5) and is connected to the support block (8). The second screw rod (7) is threadedly connected to the top wall of the transmission box (5). The drive motor (9) is configured as an explosion-proof motor, the output end of the drive motor (9) is connected to one end of a transmission shaft (10), and a first worm (11) and a second worm (12) are arranged on the transmission shaft (10) at intervals; A first worm gear (13) is threadedly sleeved on the first screw rod (6), a second worm gear (14) is threadedly sleeved on the second screw rod (7), and the first worm gear (13) and the second worm gear (14) are rotatably mounted in the transmission box (4) respectively; The worm wheel is meshed with the worm for transmission.

9. The transport vehicle chassis structure according to claim 8, characterized in that: The center of gravity adjustment component also includes: The hydraulic cylinder (15) is arranged on an inner wall of one side of the transmission box (4), and the drive motor (9) is installed on the movable end of the hydraulic cylinder (15). The hydraulic cylinder (15) is used to drive the drive motor (9) to move linearly in the transmission box (5).

10. The transport vehicle chassis structure according to claim 8, characterized in that: Limiting blocks (16) are respectively arranged at the top end of the first screw rod (6) and the bottom end of the second screw rod (7).

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