Vehicle chassis structure

Abstract

The invention provides a vehicle chassis structure, and relates to the technical field of vehicles. The structure comprises a frame, a plurality of axles, a battery assembly, an electric appliance integration assembly, a brake assembly, a steering assembly and a suspension assembly, the plurality of axles comprise a first axle, a second axle, a third axle, a fourth axle and a fifth axle, and the plurality of axles, the battery assembly, the electric appliance integration assembly, a driving assembly, the brake assembly, the steering assembly and the suspension assembly are arranged on the frame; the battery assembly is located between the first shaft and the second shaft, the electric appliance integration assembly is arranged above the first shaft, and the battery assembly is connected with the electric appliance integration assembly; the brake assembly is connected with the multiple axles and used for controlling the multiple axles to brake. The steering assembly is used for controlling the first shaft, the second shaft and the fifth shaft to steer; the suspension assembly is used for controlling the third shaft, the fourth shaft and the fifth shaft to ascend and descend, and the loading performance of the vehicle is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a vehicle chassis structure. BACKGROUND

[0002] With the rapid development of automobile technology and new energy technology, especially in the field of engineering vehicles, the chassis as an important part of new energy engineering vehicles can meet the needs of vehicle load and other requirements.

[0003] In related technologies, the chassis of a new energy engineering vehicle usually adopts an 8x4 driving form, that is, the chassis is a four-axle structure. Specifically, the first and second axles are steering axles for vehicle steering, and the third and fourth axles are drive axles for driving the vehicle to run. At the same time, the vehicle can realize load through the four-axle structure.

[0004] However, in the above chassis structure, since the single axle load and the total load of the vehicle are limited, it is difficult to meet the transportation demand of large tonnage, resulting in poor load performance of the vehicle. SUMMARY

[0005] The present application provides a vehicle chassis structure to solve the problem of poor load performance of the vehicle.

[0006] In a first aspect, the present application provides a vehicle chassis structure, comprising: a vehicle frame, a plurality of vehicle axles, a battery assembly, an electrical appliance integrated assembly, a brake assembly, a steering assembly and a suspension assembly, the plurality of vehicle axles comprising a first axle, a second axle, a third axle, a fourth axle and a fifth axle, wherein,

[0007] The plurality of vehicle axles, the battery assembly, the electrical appliance integrated assembly, the drive assembly, the brake assembly, the steering assembly and the suspension assembly are respectively arranged on the vehicle frame;

[0008] The battery assembly is located between the first axle and the second axle, the electrical appliance integrated assembly is arranged above the first axle, and the battery assembly is connected with the electrical appliance integrated assembly;

[0009] The brake assembly is connected with the plurality of vehicle axles respectively, and the brake assembly is used to control the braking of the plurality of vehicle axles;

[0010] The steering assembly is used to control the steering of the first axle, the second axle and the fifth axle;

[0011] The suspension assembly is used to control the lifting of the third axle, the fourth axle and the fifth axle.

[0012] In a possible implementation, the battery assembly comprises a first frame, a plurality of high-voltage batteries, a high-voltage distribution box, a first controller, a charging socket and a plurality of connecting plates, wherein,

[0013] The high-voltage distribution box and the first controller are arranged on a first layer of the first frame, and the plurality of high-voltage batteries are arranged on other layers of the first frame respectively;

[0014] The charging socket is arranged at the bottom of the first frame, and the high-voltage distribution box is connected with the plurality of high-voltage batteries and the charging socket respectively;

[0015] One end of the plurality of connecting plates is arranged at the bottom of the first frame, and the other end of the plurality of connecting plates is arranged on the vehicle frame;

[0016] The first controller is configured to control the plurality of high-voltage batteries, the high-voltage distribution box and the charging socket.

[0017] In a possible implementation, the electrical appliance integrated assembly comprises a second frame, a storage battery, a second controller, a hydraulic oil pump and an air conditioner, wherein,

[0018] The storage battery and the second controller are arranged on a layer of the second frame;

[0019] The hydraulic oil pump and the air conditioner are arranged on another layer of the second frame;

[0020] The storage battery is configured to supply power to low-voltage components in the vehicle;

[0021] The second controller is configured to control operation of the vehicle.

[0022] In a possible implementation, the brake assembly comprises an air compressor, a waterproof cover plate, an air compressor support, an air treatment device, a plurality of air cylinders and a plurality of EBS electromagnetic valves, wherein,

[0023] The air compressor support is arranged between the first shaft and the second shaft;

[0024] The air compressor and the air treatment device are arranged on the air compressor support respectively;

[0025] The waterproof cover plate is arranged above the air compressor and the air treatment device;

[0026] The air compressor and the air treatment device are connected, and the air treatment device is configured to treat air output by the air compressor;

[0027] The plurality of air cylinders are in communication with the air treatment device respectively, and the plurality of air cylinders are configured to store air;

[0028] The plurality of EBS electromagnetic valves are connected with corresponding air cylinders respectively, and the EBS electromagnetic valves are configured to control air flow in the corresponding air cylinders.

[0029] In a possible implementation, the steering assembly comprises a hydraulic oil tank, a hydraulic pipeline, a steering bracket, a steering gear, a plurality of steering tie rods, a knuckle arm, a centering cylinder, an energy accumulator, wherein,

[0030] One end of the hydraulic oil pump is in communication with the hydraulic oil tank, and the other end of the hydraulic oil pump is in communication with the hydraulic pipeline, the hydraulic oil tank is configured to supply oil to the hydraulic pipeline, and the hydraulic oil pump is configured to control the flow of oil in the hydraulic pipeline;

[0031] The steering gear is arranged on the steering bracket, the steering gear is connected with the plurality of steering tie rods, the steering tie rods are connected with corresponding axles, and the steering gear is configured to control the steering of the corresponding axles through the steering tie rods;

[0032] The centering cylinder is arranged on the fifth axle, the centering cylinder is connected with the knuckle arm and the hydraulic pipeline respectively, and the centering cylinder is configured to control the steering of the fifth axle through the knuckle arm;

[0033] The energy accumulator is in communication with the hydraulic pipeline, and the energy accumulator is configured to control the oil pressure in the hydraulic pipeline.

[0034] In a possible implementation, the plurality of steering tie rods comprises a first steering tie rod, a second steering tie rod, and a third steering tie rod, and the steering assembly further comprises a transition swing arm and a power-assisted cylinder, wherein,

[0035] One end of the first steering tie rod is connected with the steering gear, and the other end of the first steering tie rod is connected with the first axle;

[0036] One end of the second steering tie rod is connected with the steering gear, and the other end of the second steering tie rod is connected with the transition swing arm;

[0037] One end of the third steering tie rod is connected with the transition swing arm, and the other end of the third steering tie rod is connected with the second axle;

[0038] The power-assisted cylinder is connected with the transition swing arm and the hydraulic pipeline respectively.

[0039] In a possible implementation, the suspension assembly comprises a suspension unit corresponding to each axle, a plurality of air bags, and a plurality of ECAS electromagnetic valves, wherein,

[0040] The suspension unit is connected with the corresponding axle, and the suspension unit is configured to drive the corresponding axle to rise and fall;

[0041] The ECAS electromagnetic valve is connected with the corresponding air bag respectively, and the ECAS electromagnetic valve is configured to control the inflation and deflation of the corresponding air bag.

[0042] In a possible implementation, the third axle or the fourth axle corresponds to a first suspension unit; the first suspension unit comprises a plurality of first load bearing air bags, a first guide arm, a first guide arm support, a transverse thrust rod, a cross beam integrated device and a shock absorber, wherein,

[0043] The plurality of first load bearing air bags are respectively arranged on the vehicle frame;

[0044] The first guide arm is arranged on the first guide arm support, and the first guide arm is connected with the corresponding air bag;

[0045] One end of the transverse thrust rod is arranged on the third axle, and the other end of the transverse thrust rod is arranged on the vehicle frame;

[0046] The cross beam assembly device and the shock absorber are respectively arranged on the vehicle frame.

[0047] In a possible implementation, the fifth axle corresponds to a second suspension unit; the second suspension unit comprises a plurality of second load bearing air bags, a lifting air bag, a lifting air bag support, a lifting support, a second guide arm, a longitudinal thrust rod and a V-shaped thrust rod, wherein,

[0048] The plurality of second load bearing air bags are respectively connected with the fifth axle;

[0049] The lifting air bag is connected with the lifting air bag support and the lifting support respectively, the lifting air bag is used for controlling the lifting air bag support and the lifting support to lift and lower, and the lifting air bag support is arranged on the vehicle frame;

[0050] One end of the longitudinal thrust rod is connected with the second guide arm, and the other end of the longitudinal thrust rod is arranged on the fifth axle;

[0051] One end of the V-shaped thrust rod is connected with the lifting air bag support, and the other end of the V-shaped thrust rod is arranged on the vehicle frame.

[0052] The vehicle chassis structure provided by the application optimizes the space layout of the chassis and improves the system integration by arranging the battery assembly on the frame between the first shaft and the second shaft and arranging the electrical appliance integrated assembly above the first shaft, realizes precise braking response by independently controlling the braking of each shaft through the braking assembly, effectively reduces the turning radius of the vehicle by cooperatively controlling the steering of the first shaft, the second shaft and the fifth shaft through the steering assembly, and enables the chassis to dynamically adjust the load distribution according to the load demand by dynamically adjusting the lifting of the third shaft, the fourth shaft and the fifth shaft through the suspension assembly. In the above chassis structure design, the vehicle can realize load balancing under heavy load and reduce energy consumption under no load or light load by the collaborative layout and control of each functional assembly combined with the steerable lifting design of the fifth shaft, thereby improving the load carrying performance of the vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0053] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and serve to explain the principles of the application.

[0054] Figure 1 A schematic view of a vehicle chassis structure provided by an embodiment of the application;

[0055] Figure 2 A schematic view of another vehicle chassis structure provided by an embodiment of the application;

[0056] Figure 3 A structural schematic view of a battery assembly provided by an embodiment of the application;

[0057] Figure 4 A structural schematic view of an electrical appliance integrated assembly provided by an embodiment of the application;

[0058] Figure 5 A structural schematic view of a braking assembly provided by an embodiment of the application;

[0059] Figure 6 A structural schematic view of a steering assembly provided by an embodiment of the application;

[0060] Figure 7 A structural schematic view of a suspension assembly provided by an embodiment of the application;

[0061] Figure 8 A schematic view of a suspension structure corresponding to each axle provided by an embodiment of the application;

[0062] Figure 9 A structural schematic view of a driving assembly provided by an embodiment of the application.

[0063] Explanation of reference signs:

[0064] 100-frame;

[0065] 200 - multiple axles;

[0066] 201 - first axle; 202 - second axle; 203 - third axle; 204 - fourth axle; 205 - fifth axle;

[0067] 300 - battery assembly;

[0068] 301 - first frame; 302 - multiple high-voltage batteries; 303 - high-voltage distribution box; 304 - first controller; 305 - charging socket; 306 - multiple connecting plates;

[0069] 400 - electrical appliance integrated assembly;

[0070] 401 - second frame; 402 - storage battery; 403 - second controller; 404 - hydraulic oil pump; 405 - air conditioner;

[0071] 500 - brake assembly;

[0072] 501 - air compressor; 502 - waterproof cover plate; 503 - air compressor support; 504 - air treatment device; 505 - multiple air cylinders; 506 - multiple EBS solenoid valves;

[0073] 5051 - first air cylinder; 5052 - second air cylinder; 5053 - third air cylinder; 5054 - fourth air cylinder; 5055 - fifth air cylinder; 5056 - sixth air cylinder;

[0074] 5061 - first solenoid valve; 5062 - second solenoid valve; 5063 - third solenoid valve; 5064 - fourth solenoid valve; 5065 - fifth solenoid valve;

[0075] 600 - steering assembly;

[0076] 601 - hydraulic oil tank; 602 - hydraulic pipeline; 603 - steering support; 604 - steering gear; 605 - multiple steering tie rods; 606 - knuckle arm; 607 - centering oil cylinder; 608 - energy accumulator; 609 - transition swing arm; 610 - assist oil cylinder;

[0077] 6051 - first steering tie rod; 6052 - second steering tie rod; 6053 - third steering tie rod;

[0078] 700 - suspension assembly; 701 - suspension unit; 702 - multiple air bags; 703 - multiple ECAS solenoid valves;

[0079] 7031 - first ECAS solenoid valve; 7032 - second ECAS solenoid valve; 7033 - height sensor;

[0080] 704 - first suspension unit; 7041 - a plurality of first load bearing air bags; 7042 - first guide arm; 7043 - first guide arm bracket; 7044 - transverse thrust rod; 7045 - cross beam integrated device; 7046 - shock absorber; 7047 - first load bearing air bag a; 7048 - first load bearing air bag b;

[0081] 705 - second suspension unit; 7051 - a plurality of second load bearing air bags; 7052 - lift air bag; 7053 - lift air bag bracket; 7054 - lift bracket; 7055 - second guide arm; 7056 - longitudinal thrust rod; 7057 - V-type thrust rod; 7058 - second load bearing air bag a; 7059 - second load bearing air bag b;

[0082] 706 - first suspension; 707 - second suspension; 708 - third suspension; 709 - fourth suspension; 710 - fifth suspension;

[0083] 800 - drive assembly;

[0084] 811 - motor; 812 - gearbox; 813 - propeller shaft; 814 - inter-axle propeller shaft.

[0085] The specific embodiments of the present application have been shown by the above-described drawings, and will be described in more detail hereinafter. These drawings and the written description are not intended to restrict the scope of the present application in any way, but to explain the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0086] The exemplary embodiments will be described in detail herein with reference to the attached drawings. The same reference numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments are not meant to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the present application as detailed in the appended claims.

[0087] It should be noted that in the embodiments of the present application, some software, components, models and the like in the industry may be mentioned, which should be considered as exemplary, and the purpose is only to illustrate the feasibility of the implementation of the technical solutions of the present application, but it does not mean that the applicant has or will necessarily use the scheme.

[0088] The technical solutions of the present application and how the technical solutions of the present application solve the above technical problems will be described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of the present application will be described below with reference to the drawings.

[0089] The following explains some terms in the embodiments of the present application, so as to facilitate the understanding of the skilled in the art.

[0090] Electronic-Controlled Air Suspension (ECAS) is an advanced electronic-controlled air suspension system. Its main functions include adjusting the softness and hardness of shock absorbers, controlling the horizontal movement of the vehicle body, and adjusting the horizontal height of the vehicle body.

[0091] Figure 1 A schematic diagram of a vehicle chassis structure provided in the embodiments of the present application.

[0092] Please refer to Figure 1 The vehicle chassis structure 10 provided in the embodiments of the present application includes a frame 100, a plurality of axles 200, a battery assembly 300, an electrical appliance integrated assembly 400, a brake assembly 500, a steering assembly 600, and a suspension assembly 700. The plurality of axles includes a first axle 201, a second axle 202, a third axle 203, a fourth axle 204, and a fifth axle 205.

[0093] The frame 100 has a supporting and fixing function. The frame 100 is used to support the vehicle body and fix the overall vehicle structure. The frame 100 is installed at the bottom of the vehicle body.

[0094] The plurality of axles 200, the battery assembly 300, the electrical appliance integrated assembly 400, the brake assembly 500, the steering assembly 600, and the suspension assembly 700 are respectively arranged on the frame 100.

[0095] The plurality of axles 200 are used to install wheels and bear the frame and the vehicle body.

[0096] In the embodiments of the present application, a 10x4 driving form is adopted, that is, five axles and two driving axles. The first axle 201, the second axle 202, and the fifth axle 205 are steering axles, which are used to drive the vehicle to turn. The third axle 203 and the fourth axle 204 are driving axles, which are used to drive the vehicle to travel.

[0097] The wheelbase of the plurality of axles 200 is different. The wheelbase of the first axle 201 and the second axle 202 is 1950 mm. The wheelbase of the second axle 202 and the third axle 203 is 2550 mm. The wheelbase of the third axle 203 and the fourth axle 204 is 1400 mm. The wheelbase of the fourth axle 204 and the fifth axle 205 is 1400 mm.

[0098] The battery assembly 300 is located between the first axle 201 and the second axle 202. The electrical appliance integrated assembly 400 is arranged above the first axle 201. The battery assembly 300 is connected with the electrical appliance integrated assembly 400.

[0099] The battery assembly 300 can be connected with each electrical component in the vehicle through a cable to supply power to each electrical component in the vehicle.

[0100] The electrical appliance integrated assembly 400 integrates the electrical components by combining the support assembly, for example, the electrical components can be air conditioners and the like.

[0101] The battery assembly 300 and the electrical appliance integrated assembly 400 can be connected through a cable, and the battery assembly 300 can supply power to the electrical components in the electrical appliance integrated assembly 400.

[0102] The brake assembly 500 is connected with the plurality of axles 200 respectively, and the brake assembly 500 is used for controlling braking of the plurality of axles 200.

[0103] In the embodiment of the present application, the brake assembly 500 can also be used to control braking of the vehicle in other operating states, for example, when the vehicle is in a parking brake state, braking control can be realized through the brake assembly 500.

[0104] The steering assembly 600 is used for controlling steering of the first axle 201, the second axle 202 and the fifth axle 205.

[0105] In the embodiment of the present application, the steering assembly 600 controls steering of the vehicle in a pure hydraulic manner, and the electrical appliance integrated assembly 400 can be connected with the steering assembly 600. Specifically, the electrical appliance integrated assembly 400 is used for monitoring the operating state of the vehicle, and the steering assembly 600 controls rotation of the first axle 201, the second axle 202 and the fifth axle 205 according to the operating state of the vehicle, thereby driving corresponding wheels to rotate.

[0106] The suspension assembly 700 is used for controlling lifting of the third axle 203, the fourth axle 204 and the fifth axle 205.

[0107] The suspension assembly 700 includes a plurality of suspension devices, and the plurality of suspension devices are connected with the vehicle frame 100 and corresponding axles respectively. The suspension devices are used for transmitting force and torque acting between the vehicle frame 100 and the corresponding axles.

[0108] In actual application, the suspension assembly 700 includes a suspension height sensor, and the suspension height sensor is used for collecting suspension height data. The suspension assembly 700 can control the third axle 203, the fourth axle 204 and the fifth axle 205 to lift to a suitable height according to the suspension height data.

[0109] In the embodiment of the present application, by arranging the battery assembly on the frame between the first shaft and the second shaft, and arranging the electrical appliance integrated assembly above the first shaft, the spatial layout of the chassis is optimized and the system integration is improved, the braking assembly is used to independently control the braking of each shaft to realize precise braking response, the steering assembly is used to cooperatively control the steering of the first shaft, the second shaft and the fifth shaft to effectively reduce the turning radius of the vehicle, and the suspension assembly is used to dynamically adjust the lifting of the third shaft, the fourth shaft and the fifth shaft, so that the chassis can dynamically adjust the load distribution according to the load demand. In the above chassis structure design, through the cooperative layout and control of each functional assembly, combined with the design of the fifth shaft that can be steered and lifted, the vehicle can realize load balancing under heavy load, and reduce energy consumption under no load or light load, thereby improving the load carrying performance of the vehicle.

[0110] In the above embodiment, the following will be described in combination with Figures 2-4 The vehicle chassis structure is described.

[0111] Figure 2 Another schematic diagram of a vehicle chassis structure provided by the embodiment of the present application is shown in Figure 3 A structural schematic diagram of a battery assembly provided by the embodiment of the present application is shown in Figure 4 A structural schematic diagram of an electrical appliance integrated assembly provided by the embodiment of the present application is shown in

[0112] Please refer to Figure 3 The battery assembly 300 includes a first frame 301, a plurality of high-voltage batteries 302, a high-voltage distribution box 303, a first controller 304, a charging socket 305 and a plurality of connecting plates 306.

[0113] The high-voltage distribution box 303 and the first controller 304 are arranged on the first layer of the first frame 301, and the plurality of high-voltage batteries 302 are arranged on other layers of the first frame 301.

[0114] The first frame 301 has a supporting and fixing function, and is used to support and fix a plurality of components.

[0115] The high-voltage battery 302 is used to supply power to the power components of the vehicle, such as a motor and the like.

[0116] In the embodiment of the present application, the first frame 301 has a five-layer structure, and the number of high-voltage batteries is four, wherein the plurality of high-voltage batteries 302 are arranged on the second layer to the fifth layer of the first frame 301, the high-voltage distribution box 303 is arranged on one side of the first controller 304, and the first controller 304 is close to the wiring end of the plurality of high-voltage batteries 302 to reduce the cross interference of the wiring harness.

[0117] It should be noted that the size of the first frame 301 can be determined according to the size of the plurality of high-voltage batteries 302, the high-voltage distribution box 303 and the first controller 304, and the embodiments of the present application do not limit this.

[0118] The first controller 304 is used to monitor the charge and discharge state of the plurality of high-voltage batteries. In actual application, the first controller 304 can be a battery management system (BMS).

[0119] The charging socket 305 is arranged at the bottom of the first frame, and the high-voltage distribution box 303 is connected with the plurality of high-voltage batteries 302 and the charging socket 305 respectively.

[0120] The charging socket 305 is used to provide a charge and discharge interface for the vehicle, and the charging socket 305 is arranged below the high-voltage distribution box 303.

[0121] The high-voltage distribution box 303 can be used to monitor abnormal conditions during charging and discharging, and to distribute electrical energy to various electrical components in the vehicle.

[0122] One end of the plurality of connecting plates 306 is arranged at the bottom of the first frame 301, and the other end of the plurality of connecting plates 306 is arranged on the vehicle frame 100.

[0123] In the embodiments of the present application, four connecting plates can be arranged, and the battery assembly 300 is fixed on the vehicle frame 100 through the four connecting plates.

[0124] The first controller 304 is used to control the plurality of high-voltage batteries 302, the high-voltage distribution box 303 and the charging socket 305.

[0125] The first controller 304 can be connected with the plurality of high-voltage batteries 302, the high-voltage distribution box 303 and the charging socket 305 respectively.

[0126] The first controller 304 includes an output end and an input end, the output end of the first controller 304 is connected with the input end of the first high-voltage battery, the output end of the first high-voltage battery is connected with the input end of the second high-voltage battery, and the output end of the third high-voltage battery is connected with the input end of the fourth high-voltage battery in turn, and finally the output end of the fourth high-voltage battery is connected with the input end of the first controller 304.

[0127] The first controller 304 further comprises two control ports connected with the input end and the output end of the high-voltage distribution box 303 respectively, and the first controller 304 is configured to control the running state of the high-voltage distribution box 303. Meanwhile, one control port of the first controller 304 can also be connected with the charging socket 305, and the first controller 304 can collect temperature data of the charging socket 305 through the control port, and control the interface state of the charging socket 305 according to the temperature data.

[0128] Please refer to Figure 4 The electric appliance integrated assembly 400 comprises a second frame 401, a storage battery 402, a second controller 403, a hydraulic oil pump 404 and an air conditioner 405.

[0129] The storage battery 402 and the second controller 403 are arranged on one layer of the second frame 401, and the hydraulic oil pump 404 and the air conditioner 405 are arranged on another layer of the second frame 401.

[0130] The hydraulic oil pump 404 is arranged below the second controller 403, and the air conditioner 405 is arranged below the storage battery 402.

[0131] The hydraulic oil pump 404 is configured to provide pressurized hydraulic oil. The air conditioner 405 can be a two-in-one air conditioner, i.e., a combination of a refrigeration air conditioner and a heating air conditioner.

[0132] The storage battery 402 is configured to supply power to low-voltage components in the vehicle, for example, the low-voltage components can be a lighting system, an instrument panel, etc.

[0133] The second controller 403 is configured to control the running of the vehicle. The second controller 403 can be connected with the storage battery 402, and the second controller 403 can control the charging and discharging of the storage battery 402 according to the running state of the vehicle and the state of the storage battery 402.

[0134] In the embodiment of the present application, the second controller 403 is a multi-in-one controller, and the running state of the whole vehicle can be controlled through the second controller 403. The second controller 403 can receive control instructions from an operation page of the cab.

[0135] In the battery assembly, the high-voltage distribution box, the plurality of high-voltage batteries, the first controller and the charging socket are integrated in the first frame, so that the optimized layout and function integration of the battery assembly are realized, the connection of the high-voltage distribution box with the plurality of high-voltage batteries and the charging socket ensures the efficient transmission and management of electric energy, and in the electrical appliance integrated assembly, the storage battery, the second controller, the hydraulic oil pump and the air conditioner are integrated in the second frame, so that the optimization of low-voltage power supply and vehicle operation control is realized. In the above vehicle chassis structure design, through the layered integrated layout of the battery assembly and the electrical appliance integrated assembly, the space layout of the vehicle chassis is optimized while realizing the respective functions, effectively solving the problems of space shortage and complex lines of the engineering vehicle chassis, and improving the reliability of the key components.

[0136] On the basis of any one of the above embodiments, the structure of the brake assembly will be described below. Figure 5

[0137] Figure 5 The structure diagram of the brake assembly provided in the embodiment of the present application is shown in Figure 5 The brake assembly 500 includes an air compressor 501, a waterproof cover plate 502, an air compressor support 503, an air treatment device 504, a plurality of air cylinders 505 and a plurality of EBS electromagnetic valves 506.

[0138] The air compressor support 503 is arranged between the first shaft 201 and the second shaft 202.

[0139] The air compressor 501 and the air treatment device 504 are arranged on the air compressor support 503 respectively.

[0140] The waterproof cover plate 502 is arranged above the air compressor 501 and the air treatment device 504.

[0141] The air compressor 501 is arranged on the inner side of the vehicle frame 100 through the air compressor support 503, and the air compressor 501, the waterproof cover plate 502 and the air treatment device 504 are arranged between the battery assembly 300 and the electrical appliance integrated assembly 400 through the air compressor support 503.

[0142] The waterproof cover plate 502 is used to prevent water from entering the air compressor 501, the air compressor support 503 and the air treatment device 504.

[0143] The air compressor 501 is connected with the air treatment device 504, and the air treatment device 504 is used to treat the air output by the air compressor 501.

[0144] ​The air compressor 501 is configured to compress the input air and deliver the compressed air to the air processing device 504. The air processing device 504 is configured to dry the compressed air and remove impurities such as water from the air.

[0145] In the embodiment, the air processing device 504 is a central air processing unit (CAPU).

[0146] The plurality of air cylinders 505 are in communication with the air processing device 504 and are configured to store air.

[0147] The plurality of air cylinders 505 include a first air cylinder 5051, a second air cylinder 5052, a third air cylinder 5053, a fourth air cylinder 5054, a fifth air cylinder 5055 and a sixth air cylinder 5056. The first air cylinder 5051, the third air cylinder 5053, the fourth air cylinder 5054, the fifth air cylinder 5055 and the sixth air cylinder 5056 are arranged on the outer side of the vehicle frame 100.

[0148] The first air cylinder 5051 is arranged at the fifth axle 205.

[0149] The second air cylinder 5052 is arranged between the second axle 202 and the third axle 203 and is arranged on the inner side of the vehicle frame 100.

[0150] The third air cylinder 5053 and the fourth air cylinder 5054 are arranged between the first axle 201 and the second axle 202 via a double-layer support, and the third air cylinder 5053 is arranged above the fourth air cylinder 5054.

[0151] The fifth air cylinder 5055 and the sixth air cylinder 5056 are arranged between the second axle 202 and the third axle 203 via a double-layer support, and the fifth air cylinder 5055 is arranged above the sixth air cylinder 5056.

[0152] In the embodiment, the first air cylinder 5051 is configured to provide parking brake for the vehicle, has an air storage volume of 30 liters, the second air cylinder 5052 is configured to provide auxiliary air for the vehicle, has an air storage volume of 20 liters, the third air cylinder 5053 is configured to provide one-two axle brake for the vehicle, has an air storage volume of 40 liters, the fourth air cylinder 5054 and the fifth air cylinder 5055 are configured to provide three-four-five axle brake for the vehicle, the fourth air cylinder 5054 has an air storage volume of 30 liters, the fifth air cylinder 5055 has an air storage volume of 40 liters, and the sixth air cylinder 5056 is configured to provide air for the suspension assembly 700 of the vehicle, has an air storage volume of 40 liters.

[0153] In the embodiment of the present application, an electronic control brake system (EBS) can be arranged in the vehicle, wherein the EBS brake system adopts a 6s / 5m control mode. Specifically, six sensors and five EBS electromagnetic valves can be arranged in the vehicle, the brake state information of the vehicle is collected, and the brake state is determined according to the brake state information, so as to control the plurality of EBS electromagnetic valves 506 to perform corresponding operations.

[0154] The plurality of EBS electromagnetic valves 506 are respectively connected with corresponding air cylinders, and the EBS electromagnetic valves are used to control the gas flow in the corresponding air cylinders.

[0155] The plurality of EBS electromagnetic valves 506 include a first electromagnetic valve 5061, a second electromagnetic valve 5062, a third electromagnetic valve 5063, a fourth electromagnetic valve 5064, and a fifth electromagnetic valve 5065.

[0156] The first electromagnetic valve 5061 is used to control the gas flow in the third air cylinder 5053, and the first electromagnetic valve 5061 is a double-channel electromagnetic valve.

[0157] The second electromagnetic valve 5062 is used to control the gas flow in the second air cylinder 5052.

[0158] The third electromagnetic valve 5063 is used to control the gas flow in the first air cylinder 5051.

[0159] The fourth electromagnetic valve 5064 is used to control the gas flow in the fourth air cylinder 5054 and the fifth air cylinder 5055, and the fourth electromagnetic valve 5064 is a double-channel electromagnetic valve.

[0160] The fifth electromagnetic valve 5065 is used to control the gas flow in the sixth air cylinder 5056, and the fifth electromagnetic valve 5065 is a single-channel electromagnetic valve.

[0161] In the embodiment of the present application, the air compressor support is arranged between the first shaft and the second shaft, and the air compressor, the air treatment device, and the waterproof cover plate are arranged on the air compressor support, so that the compact layout of the structure is realized, and the gas flow is controlled in multiple channels by the plurality of air cylinders cooperating with the EBS electromagnetic valves, so that the control of the gas flow is more accurate. In the above vehicle chassis structure design, through the compact integration and the multi-channel control strategy, the braking performance of the vehicle is improved, and the space structure of the chassis is optimized.

[0162] On the basis of any one of the above embodiments, the structure of the steering assembly will be described below. Figure 6 The structure of the steering assembly will be described below.

[0163] Figure 6 The structure of the steering assembly provided in the embodiment of the present application is shown in the following figure: Figure 6The steering assembly 600 comprises a hydraulic oil tank 601, a hydraulic pipeline 602, a steering bracket 603, a steering gear 604, a plurality of steering tie rods 605, a knuckle arm 606, a centering oil cylinder 607, and an energy accumulator 608.

[0164] One end of the hydraulic oil pump 404 is in communication with the hydraulic oil tank 601, and the other end of the hydraulic oil pump 404 is in communication with the hydraulic pipeline 602. The hydraulic oil tank 601 is configured to supply oil to the hydraulic pipeline 602, and the hydraulic oil pump 404 is configured to control the flow of oil in the hydraulic pipeline 602.

[0165] The hydraulic oil tank 601 is arranged at the left beam of the vehicle frame 100, i.e., at the junction of the first axle 201 and the wheels.

[0166] The steering gear 604 is arranged on the steering bracket 603, and the steering gear 604 is connected to the plurality of steering tie rods 605, which are connected to corresponding axles. The steering gear 604 is configured to control the steering of the corresponding axles through the plurality of steering tie rods 605.

[0167] The steering gear 604 and the steering bracket 603 are arranged at the front side of the right beam of the vehicle frame 100.

[0168] The steering gear 604 is configured to increase the steering force and the steering angle of the steering wheel.

[0169] The plurality of steering tie rods 605 are configured to steer the first axle 201 and the second axle 202.

[0170] The centering oil cylinder 607 is arranged on the fifth axle 205, and the centering oil cylinder 607 is connected to the knuckle arm 606 and the hydraulic pipeline 602, respectively. The centering oil cylinder 607 is configured to control the steering of the fifth axle 205 through the knuckle arm 606.

[0171] The centering oil cylinder 607 is provided with a piston rod, and the centering oil cylinder 607 can push the piston rod to move by adjusting the flow and pressure of oil in the hydraulic pipeline 602. The movement of the piston rod can be transmitted to the fifth axle 205 through the knuckle arm 606, thereby adjusting the steering angle of the fifth axle 205 and steering the wheels.

[0172] The energy accumulator 608 is in communication with the hydraulic pipeline 602, and the energy accumulator 608 is configured to control the oil pressure in the hydraulic pipeline 602.

[0173] In the embodiments of the present application, two energy accumulators 608 can be arranged on the vehicle frame 100. Specifically, the first energy accumulator and the second energy accumulator are both arranged at the rear side of the fifth axle 205. The first energy accumulator is arranged at the left beam of the vehicle frame 100, and the second energy accumulator is arranged at the right beam of the vehicle frame 100.

[0174] The plurality of steering tie rods 605 include a first steering tie rod 6051, a second steering tie rod 6052, and a third steering tie rod 6053, and the steering assembly 600 further includes a transition swing arm 609 and a power cylinder 610.

[0175] The transition swing arm 609 is arranged between the first axle 201 and the second axle 202, and is used to transmit the force of the steering tie rods.

[0176] One end of the first steering tie rod 6051 is connected to the steering gear 604, and the other end is connected to the first axle 201.

[0177] The first steering tie rod 6051 is used to adjust the steering angle of the first axle 201.

[0178] One end of the second steering tie rod 6052 is connected to the steering gear 604, and the other end is connected to the transition swing arm 609.

[0179] One end of the third steering tie rod 6053 is connected to the transition swing arm 609, and the other end is connected to the second axle 202.

[0180] The transition swing arm 609 can receive the force of the second steering tie rod 6052 and transmit the force to the second axle 202 through the third steering tie rod 6053. The third steering tie rod 6053 is used to adjust the steering angle of the second axle 202.

[0181] The power cylinder 610 is connected to the transition swing arm 609 and the hydraulic pipeline 602, respectively, and is used to assist the steering of the axle.

[0182] The hydraulic pipeline 602 is used to transport oil.

[0183] In the embodiments of the present application, the hydraulic pipeline 602 is connected to the hydraulic oil pump 404 and the hydraulic oil tank 601, is connected to the steering gear 604 along the lower bent beam of the vehicle frame 100, is then communicated with the power cylinder 610 along the upper wing surface of the right beam of the vehicle frame 100, and outputs three hydraulic pipelines 602, which are transported along the inner abdominal surface of the vehicle frame 100 through two circular holes from the outside of the vehicle frame 100 to the inside of the vehicle frame 100, and finally communicated with the centering cylinder 607, thereby controlling the steering of the fifth axle 205.

[0184] Next, the working process of the steering assembly is described as follows:

[0185] When the vehicle is steering, the first steering pull rod 6051 is driven to rotate by rotating the steering gear 604, and then the first axle 201 is steered, and the second steering pull rod 6052 and the third steering pull rod 6053 are driven to rotate, and then the second axle 202 is steered, so as to realize the power transmission from the steering wheel to the first axle and the second axle. At the same time, the hydraulic oil in the hydraulic pipeline 602 enters the centering oil cylinder 607, and the centering oil cylinder 607 moves the piston rod left and right by controlling the oil flow, and drives the steering knuckle arm 606 around the hub of the fifth axle 205 to rotate left or right, so as to realize the steering of the fifth axle 205 of the vehicle, and then complete the steering of the whole vehicle.

[0186] In the embodiment of the present application, the steering gear is connected with the plurality of steering pull rods, the power-assisted oil cylinder and the transition swing arm, which can drive the first axle and the second axle of the vehicle to steer, and the centering oil cylinder is connected with the hydraulic pipeline and the steering knuckle arm of the fifth axle respectively, which can control the steering angle of the fifth axle by adjusting the flow of the oil, effectively reduce the turning radius, so as to realize the steering of the vehicle. In the above chassis structure design, through the cooperative control of the hydraulic system and the mechanical transmission in the steering assembly, the steering precision and flexibility of the five-axle engineering vehicle are significantly improved, and the steering precision of the vehicle is improved.

[0187] On the basis of any one of the above embodiments, the following will be described in combination with Figure 7 The structure of the suspension assembly is described.

[0188] Figure 7 The structure diagram of the suspension assembly provided in the embodiment of the present application is shown in Figure 7 The suspension assembly 700 includes a suspension unit 701 corresponding to each axle, a plurality of air bags 702 and a plurality of ECAS electromagnetic valves 703.

[0189] The suspension unit 701 is connected with the corresponding axle, and the suspension unit 701 is used to drive the corresponding axle to lift.

[0190] The plurality of ECAS electromagnetic valves 703 are respectively connected with the corresponding air bags, and the ECAS electromagnetic valves 703 are used to control the inflation and deflation of the corresponding air bags.

[0191] The plurality of air bags 702 are respectively arranged at the wheel side of the third axle 203, the fourth axle 204 and the fifth axle 205.

[0192] The plurality of ECAS electromagnetic valves 703 includes a first ECAS electromagnetic valve 7031 and a second ECAS electromagnetic valve 7032. The first ECAS electromagnetic valve 7031 is arranged above the third axle 203 and inside the left beam of the vehicle frame 100. The second ECAS electromagnetic valve 7032 is arranged above the fourth axle 204 and inside the left beam of the vehicle frame 100. The first ECAS electromagnetic valve 7031 is used to control the inflation and deflation of the airbags of the third and fourth axles. The second ECAS electromagnetic valve 7032 is used to control the inflation and deflation of the airbags of the fifth axle 205.

[0193] In the embodiments of the present application, a third controller can be arranged in the vehicle. The third controller is used to control the plurality of ECAS electromagnetic valves 703 to adjust the gas in the plurality of airbags 702.

[0194] In the embodiments of the present application, two height sensors 7033 can be arranged above the fourth axle 204. The height sensors 7033 are used to collect the suspension heights of the third, fourth and fifth axles. The third controller can adjust the gas flow in the plurality of airbags 702 according to the suspension heights, so that the loads of the third, fourth and fifth axles reach a set ratio, and the running posture of the vehicle is normal.

[0195] Specifically, the inflation and deflation of the airbags can be controlled according to a preset height. If the suspension height is greater than the preset height, the third controller controls the plurality of ECAS electromagnetic valves 703 to open and deflate the corresponding airbags until the preset height is reached. If the suspension height is less than the preset height, the third controller controls the plurality of ECAS electromagnetic valves 703 to open and inflate the corresponding airbags until the preset height is reached.

[0196] The suspension unit corresponding to the third axle or the fourth axle is a first suspension unit 704. The first suspension unit 704 includes a plurality of first load-bearing airbags 7041, a first guide arm 7042, a first guide arm support 7043, a transverse thrust rod 7044, a cross beam integrated device 7045 and a shock absorber 7046.

[0197] The plurality of first load-bearing airbags 7041 are arranged on the vehicle frame 100.

[0198] The plurality of first load-bearing airbags 7041 includes two first load-bearing airbags a 7047 and two first load-bearing airbags b 7048. The two first load-bearing airbags a 7047 are arranged on the rear side of the third axle 203. The two first load-bearing airbags b 7048 are arranged on the rear side of the fourth axle 204.

[0199] The plurality of first load-bearing airbags 7041 are used to adjust the suspension height of the corresponding axle.

[0200] The first guide arm 7042 is arranged on the first guide arm support 7043. The first guide arm 7042 is connected to the corresponding airbag.

[0201] The first guide arm 7042 is used to transmit a longitudinal force, and the first guide arm support 7043 is used to support and fix the first guide arm 7042.

[0202] One end of the transverse thrust rod 7044 is arranged on the third shaft 203, and the other end of the transverse thrust rod 7044 is arranged on the vehicle frame 100, specifically, the one end of the transverse thrust rod 7044 is arranged on the drive axle of the third shaft 203.

[0203] The cross beam assembly device 7045 and the shock absorber 7046 are arranged on the vehicle frame 100, respectively.

[0204] The rear half of the first guide arm 7042 is arranged on the left beam of the vehicle frame 100 by connecting the cross beam assembly device 7045, the shock absorber 7046 and the first load-bearing air bag a 7047.

[0205] The suspension unit corresponding to the fifth shaft is a second suspension unit 705, and the second suspension unit 705 includes a plurality of second load-bearing air bags 7051, a lifting air bag 7052, a lifting air bag support 7053, a lifting support 7054, a second guide arm 7055, a longitudinal thrust rod 7056 and a V-shaped thrust rod 7057.

[0206] The plurality of second load-bearing air bags 7051 are connected with the fifth shaft 205, respectively.

[0207] The plurality of second load-bearing air bags 7051 include a second load-bearing air bag a 7058 and a second load-bearing air bag b 7059. The second load-bearing air bag a 7058 and the second load-bearing air bag b 7059 are arranged above the fifth shaft 205, respectively.

[0208] In the embodiment of the present application, one exhaust electromagnetic valve 7054 is arranged above each of the two first load-bearing air bags b 7048, the exhaust electromagnetic valve 7054 is arranged on the inner side of the vehicle frame 100, and the exhaust electromagnetic valve 7054 is used to adjust the gas flow in the plurality of second load-bearing air bags 7051. For example, when the whole vehicle is reversing uphill, in order to avoid the suspension of the drive axle corresponding to the third and fourth shafts, the gas flow in the air bag corresponding to the fifth shaft 205 can be adjusted by the two exhaust electromagnetic valves 7054 to realize the function of fast release of the five axles.

[0209] It should be noted that when the fifth shaft 205 is lifted, the exhaust electromagnetic valve 7054 and the second ECAS electromagnetic valve 7032 control the air bag inflation and deflation can be executed in parallel, or can be executed sequentially, which is not limited in the embodiment of the present application.

[0210] The lifting air bag 7052 is connected with the lifting air bag support 7053 and the lifting support 7054, respectively, and is used to control the lifting air bag support 7053 and the lifting support 7054 to lift and lower. The lifting air bag support 7053 is arranged on the vehicle frame 100.

[0211] The middle of the lifting bracket 7054 is connected to one end of the lifting airbag 7052. When the lifting airbag 7052 is inflated, it can drive the lifting airbag bracket 7053 to rise, thereby lifting the fifth shaft 205.

[0212] In this embodiment, pressure sensors can be installed at the two second bearing airbags b7059 to collect the pressure values ​​of the corresponding airbags. Specifically, the fifth axis 205 can be raised and lowered according to a preset pressure value. If the current pressure value is greater than the preset pressure value, the second bearing airbags a7058 and b7059 are inflated, and the lifting airbag 7052 is deflated, so that the fifth axis can quickly fall down to participate in bearing.

[0213] One end of the longitudinal thrust rod 7056 is connected to the second guide arm 7055, and the other end of the longitudinal thrust rod 7056 is set on the fifth shaft 205.

[0214] One end of the V-shaped thrust rod 7057 is connected to the lifting airbag bracket 7053, and the other end of the V-shaped thrust rod 7057 is mounted on the vehicle frame 100.

[0215] Below, in conjunction with Figure 8 The diagrams illustrating the suspension structure for each axle are presented using specific examples.

[0216] Figure 8 For a schematic diagram of the suspension structure corresponding to each axle provided in the embodiments of this application, please refer to [link / reference]. Figure 8 This includes the first suspension 706, the second suspension 707, the third suspension 708, the fourth suspension 709, and the fifth suspension 710.

[0217] The first suspension 706 is located at the first axle 201, the second suspension 707 is located at the second axle 202, the third suspension 708 is located at the third axle 203, the fourth suspension 709 is located at the fourth axle, and the fifth suspension 710 is located at the fifth axle 205.

[0218] In the embodiments of this application, the suspensions corresponding to the first and second axles (the first suspension 706 and the second suspension 707) are four-leaf spring suspensions, the suspensions corresponding to the third and fourth axles (the third suspension 708 and the fourth suspension 709) are single-swing arm air suspensions, and the suspensions corresponding to the fifth axle 205 (the fifth suspension 710) are independent air suspensions.

[0219] In this embodiment of the application, the vehicle chassis structure 10 also includes a drive assembly for driving the vehicle.

[0220] Below, in conjunction with Figure 9 The structural diagram of the driving component is illustrated through specific examples.

[0221] Figure 9 The structural schematic diagram of the driving assembly provided in the embodiments of the present application is shown in FIG. 8. Figure 9 The driving assembly 800 includes a motor 811, a gearbox 812, a transmission shaft 813 and an inter-axle transmission shaft 814. It should be noted that in order to clearly show the structure of the driving assembly 800, the structure of the gearbox 812 and the inter-axle transmission shaft 814 is marked by a red rectangular frame.

[0222] The gearbox 812 is connected with the motor 811 and the transmission shaft 813 respectively. The transmission shaft 813 is arranged between the second shaft 202 and the third shaft 203, and is used for transmitting power. The inter-axle transmission shaft 814 is arranged between the third shaft 203 and the fourth shaft 204, and is used for transmitting power to different drive axles.

[0223] In the embodiments of the present application, through the cooperative control of the third controller and the plurality of ECAS electromagnetic valves, the inflation and deflation control of the bearing air bags of the third, fourth and fifth shafts can be realized, so as to adjust the suspension height, so that the attitude of the vehicle body is kept stable, and the inflation and deflation control of the lifting air bag of the fifth shaft can also be realized, so as to realize the lifting function of the fifth shaft. In the above chassis structure design, through the precise control of the inflation and deflation of the plurality of air bags, the load balance of the whole vehicle under different load conditions can be ensured, and the stability of the five-axle engineering vehicle chassis is improved.

[0224] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that: they can still modify the technical solutions recorded in the above embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A vehicle chassis structure, characterized by, The vehicle frame, the plurality of axles, the battery assembly, the electrical appliance integrated assembly, the driving assembly, the brake assembly, the steering assembly and the suspension assembly are arranged on the vehicle frame respectively. The battery assembly is arranged between the first axle and the second axle, the electrical appliance integrated assembly is arranged above the first axle, and the battery assembly is connected with the electrical appliance integrated assembly. The brake assembly is connected with the plurality of axles respectively, and the brake assembly is used for controlling the plurality of axles to brake. The steering assembly is used for controlling the first axle, the second axle and the fifth axle to steer. The suspension assembly is used for controlling the third axle, the fourth axle and the fifth axle to lift and lower. The battery assembly comprises a first frame, a plurality of high-voltage batteries, a high-voltage distribution box, a first controller, a charging socket and a plurality of connecting plates.

2. The vehicle chassis structure according to claim 1, characterized by The high-voltage distribution box and the first controller are arranged on a first layer of the first frame, and the plurality of high-voltage batteries are arranged on other layers of the first frame respectively. The charging socket is arranged at the bottom of the first frame, the high-voltage distribution box is connected with the plurality of high-voltage batteries and the charging socket respectively, and one end of the plurality of connecting plates is arranged at the bottom of the first frame, and the other end of the plurality of connecting plates is arranged on the vehicle frame. The first controller is used for controlling the plurality of high-voltage batteries, the high-voltage distribution box and the charging socket. The electrical appliance integrated assembly comprises a second frame, a storage battery, a second controller, a hydraulic oil pump and an air conditioner. The storage battery and the second controller are arranged on a layer of the second frame.

3. Vehicle chassis structure according to claim 1 or 2, characterized in that The hydraulic oil pump and the air conditioner are arranged on another layer of the second frame. The storage battery is used for supplying power to low-voltage components in the vehicle. The second controller is used for controlling the vehicle to operate. The brake assembly comprises an air compressor, a waterproof cover plate, an air compressor support, an air treatment device, a plurality of air cylinders and a plurality of EBS electromagnetic valves. The air compressor support is arranged between the first axle and the second axle.

4. Vehicle chassis structure according to any one of claims 1-3, characterized in that The air compressor and the air treatment device are arranged on the air compressor support respectively. The waterproof cover plate is arranged above the air compressor and the air treatment device. The air compressor and the air treatment device are connected, and the air treatment device is used for treating air output by the air compressor. The plurality of air cylinders are communicated with the air treatment device respectively, and the plurality of air cylinders are used for storing air. The plurality of EBS electromagnetic valves are connected with corresponding air cylinders respectively, and the EBS electromagnetic valves are used for controlling air flow in the corresponding air cylinders. The steering assembly comprises a hydraulic oil tank, a hydraulic pipeline, a steering support, a steering gear, a plurality of steering pull rods, a knuckle arm, a centering oil cylinder and an energy accumulator. ​ 5. Vehicle chassis structure according to any one of claims 1-4, characterized in that ​ One end of the hydraulic oil pump is communicated with the hydraulic oil tank, and the other end of the hydraulic oil pump is communicated with the hydraulic pipeline, the hydraulic oil tank is used for supplying oil to the hydraulic pipeline, and the hydraulic oil pump is used for controlling the oil flow in the hydraulic pipeline; The steering gear is arranged on the steering gear support, the steering gear is connected with the plurality of steering drag links, the steering drag links are connected with corresponding axles, and the steering gear is used for controlling the corresponding axles to steer through the steering drag links; The centering oil cylinder is arranged on the fifth axle, and the centering oil cylinder is connected with the knuckle arm and the hydraulic pipeline respectively, and the centering oil cylinder is used for controlling the fifth axle to steer through the knuckle arm; The energy accumulator is communicated with the hydraulic pipeline, and the energy accumulator is used for controlling the oil pressure in the hydraulic pipeline.

6. The vehicle chassis structure according to claim 5, characterized by The plurality of steering drag links include a first steering drag link, a second steering drag link and a third steering drag link, and the steering assembly further includes a transition swing arm and a boost oil cylinder, wherein One end of the first steering drag link is connected with the steering gear, and the other end of the first steering drag link is connected with the first axle; One end of the second steering drag link is connected with the steering gear, and the other end of the second steering drag link is connected with the transition swing arm; One end of the third steering drag link is connected with the transition swing arm, and the other end of the third steering drag link is connected with the second axle; The boost oil cylinder is connected with the transition swing arm and the hydraulic pipeline respectively.

7. Vehicle chassis structure according to any one of claims 1-6, characterized in that The suspension assembly includes a suspension unit corresponding to each axle, a plurality of air bags and a plurality of ECAS electromagnetic valves, wherein The suspension unit is connected with the corresponding axle, and the suspension unit is used to drive the corresponding axle to rise and fall; The ECAS electromagnetic valve is connected with the corresponding air bag respectively, and the ECAS electromagnetic valve is used to control the corresponding air bag to inflate and deflate.

8. The vehicle chassis structure according to claim 7, characterized by The suspension unit corresponding to the third axle or the fourth axle is a first suspension unit; the first suspension unit includes a plurality of first bearing air bags, a first guide arm, a first guide arm support, a transverse thrust rod, a cross beam integrated device and a shock absorber, wherein The plurality of first bearing air bags are arranged on the vehicle frame respectively; The first guide arm is arranged on the first guide arm support, and the first guide arm is connected with the corresponding air bag; One end of the transverse thrust rod is arranged on the third axle, and the other end of the transverse thrust rod is arranged on the vehicle frame; The cross beam assembly device and the shock absorber are arranged on the vehicle frame respectively.

9. The vehicle chassis structure according to claim 7, characterized by The suspension unit corresponding to the fifth axle is a second suspension unit; the second suspension unit includes a plurality of second bearing air bags, a lifting air bag, a lifting air bag support, a lifting support, a second guide arm, a longitudinal thrust rod and a V-shaped thrust rod, wherein The plurality of second bearing air bags are connected with the fifth axle respectively; The lifting air bag is connected with the lifting air bag support and the lifting support respectively, and the lifting air bag is used to control the lifting air bag support and the lifting support to rise and fall; the lifting air bag support is arranged on the vehicle frame; One end of the longitudinal thrust rod is connected with the second guide arm, and the other end of the longitudinal thrust rod is arranged on the fifth axle; One end of the V-shaped thrust rod is connected with the lifting air bag support, and the other end of the V-shaped thrust rod is arranged on the vehicle frame.

10. A vehicle characterized by comprising: The vehicle chassis structure comprises the vehicle chassis structure according to any one of claims 1-9.

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