Chassis of special electric vehicle and vehicle

Abstract

The utility model relates to the technical field of vehicle chassis, and particularly discloses an electric special vehicle chassis and a vehicle. A front wheel steering axle and a rear wheel electric drive axle are arranged on the frame assembly, and the modular braking system is arranged on the frame assembly between the front wheel steering axle and the rear wheel electric drive axle; the modularized braking system comprises an air storage tank, a drying tank and an air compressor which are located on one side of the vehicle frame assembly and sequentially arranged in the vehicle advancing direction. The gas storage tank is arranged close to the rear wheel electric drive axle; the air inlet of the drying tank is connected with the air compressor, and the air outlet is connected with the air storage tank Compressed air generated by the air compressor enters the air storage tank through the drying tank, and the air storage tank is connected with a brake on the rear wheel electric drive axle through an arranged brake pipeline. The device is convenient to maintain, connecting pipelines can be effectively shortened, and the system failure rate is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle chassis, and in particular to a chassis and vehicle for an electric special-purpose vehicle. Background Art

[0002] In the commercial vehicle sector, conventional fuel-powered vehicles will gradually be replaced by new energy vehicles. Therefore, the development of new energy vehicles, particularly in this area, is crucial. Conventional electric special-purpose vehicle chassis braking systems are dispersed within the vehicle frame assembly, making them difficult to quickly inspect and repair. Furthermore, the dispersed layout of components occupies a large space, significantly increasing the length of connecting pipelines and the number of connectors, leading to a high failure rate in the braking system. Utility Model Content

[0003] The purpose of this application is to provide an electric special vehicle chassis and vehicle, which integrates the braking system on one side of the frame assembly, which is not only convenient for maintenance, but also can effectively shorten the connecting pipelines and reduce the system failure rate.

[0004] The embodiment of the present application is implemented as follows:

[0005] An embodiment of the present application provides a chassis for an electric special-purpose vehicle, including a frame assembly and a modular braking system; a front-wheel steering axle and a rear-wheel electric drive axle are provided on the frame assembly, and the modular braking system is provided on the frame assembly between the front-wheel steering axle and the rear-wheel electric drive axle; the modular braking system includes an air storage tank, a drying tank and an air compressor located on one side of the frame assembly and arranged in sequence along the direction of travel of the vehicle; the air storage tank is arranged close to the rear-wheel electric drive axle; the air inlet of the drying tank is connected to the air compressor, and the air outlet is connected to the air storage tank; the compressed air generated by the air compressor enters the air storage tank through the drying tank, and the air storage tank is connected to the brake on the rear-wheel electric drive axle through a provided brake pipeline.

[0006] As an optional embodiment, a rear axle suspension connected to the frame assembly is provided on the rear-wheel electric drive axle; the rear axle suspension includes a leaf spring and a shock absorber; both ends of the leaf spring are hinged to the frame assembly, and the middle part of the leaf spring is connected to the rear-wheel electric drive axle; the shock absorber is located in the middle of the leaf spring and the telescopic direction intersects with the extension direction of the leaf spring, one end of the shock absorber is connected to the frame assembly, and the other end is connected to the clamping structure provided on the leaf spring.

[0007] As an optional embodiment, the holding structure is a U-shaped structural member with an opening facing downward, a lower bracket is provided at the open end of the U-shaped structural member, and the shock absorber is vertically arranged and the lower end is hinged to the lower bracket.

[0008] As an optional embodiment, it also includes a cooling system, which includes a radiator, a cooling pot, a cooling water pump and a controller integrated on the side of the front-wheel steering axle away from the rear-wheel electric drive axle; the cooling water pump can transport the coolant in the radiator and the cooling pot to the rear-wheel electric drive axle through the provided cooling pipe, and the controller is used to detect the temperature, pressure and flow of the coolant in the cooling pipe.

[0009] As an optional embodiment, it also includes a battery pack arranged on the frame assembly between the front wheel steering axle and the rear wheel electric drive axle; the upper surface of the battery pack is flush with the lower surface of the frame assembly.

[0010] As an optional implementation, a battery bracket is provided in the middle of the frame assembly, and the battery pack is fixed to the frame assembly through the battery bracket.

[0011] As an optional embodiment, the battery bracket includes a plurality of connection seats arranged at intervals around the battery pack; the connection seat includes a first connection member fixedly connected to the side of the battery pack and a second connection member fixedly connected to the frame assembly.

[0012] As an optional embodiment, the first connecting member extends horizontally and the second connecting member extends vertically, and the first connecting member and the second connecting member form a T-shaped structural member.

[0013] As an optional embodiment, the frame assembly includes two main longitudinal beams arranged parallel to each other; the main longitudinal beams have a variable cross-section section; the variable cross-section section extends from the front wheel steering axle in the direction away from the rear wheel electric drive axle, and the cross-section gradually becomes smaller.

[0014] As an optional implementation, a plurality of spaced-apart cross beams are provided between the two main longitudinal beams, and the cross section of the cross beams is a π-shaped structure.

[0015] In addition, an embodiment of the present application also provides a vehicle, including the above-mentioned electric special vehicle chassis.

[0016] The beneficial effects of the embodiments of the present application include:

[0017] The embodiment of the present application provides a chassis for an electric special-purpose vehicle, including a frame assembly and a modular braking system. The frame assembly of the embodiment of the present application is provided with a front-wheel steering axle and a rear-wheel electric drive axle. The modular braking system of the embodiment of the present application is integrated and arranged on the frame assembly between the front-wheel steering axle and the rear-wheel electric drive axle, and the modular braking system is close to the rear-wheel electric drive axle. The embodiment of the present application integrates the modular braking system on one side of the frame assembly, making the braking system easy to repair and occupying a smaller installation space, making the chassis layout more compact and effectively reducing maintenance costs. The modular braking system of the embodiment of the present application includes an air tank, a drying tank and an air compressor located on one side of the frame assembly and arranged in sequence along the direction of travel of the vehicle; wherein the air tank is arranged close to the rear-wheel electric drive axle; the above arrangement greatly shortens the length of the brake line, effectively reducing the vehicle failure rate and improving the safety and reliability of the special-purpose vehicle chassis. The air inlet of the drying tank in the embodiment of the present application is connected to the air compressor, and the air outlet is connected to the air storage tank; the compressed air generated by the air compressor enters the air storage tank through the drying tank, and the air storage tank is connected to the brake on the rear wheel electric drive axle through the set brake pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 This is one of the structural diagrams of the electric special vehicle chassis according to an embodiment of the present application;

[0020] Figure 2 This is the second structural diagram of the electric special vehicle chassis according to the embodiment of the present application;

[0021] Figure 3 This is the third structural diagram of the electric special vehicle chassis according to the embodiment of the present application;

[0022] Figure 4 This is the fourth structural diagram of the electric special vehicle chassis according to the embodiment of the present application;

[0023] Figure 5 This is the fifth structural diagram of the electric special vehicle chassis according to the embodiment of the present application;

[0024] Figure 6 This is the sixth structural diagram of the electric special vehicle chassis according to an embodiment of the present application;

[0025] Figure 7 This is the seventh structural diagram of the electric special vehicle chassis according to the embodiment of the present application;

[0026] Figure 8 This is the eighth structural diagram of the electric special-purpose vehicle chassis according to an embodiment of the present application.

[0027] icon:

[0028] 100-Frame assembly; 101-Modular braking system; 102-Front-wheel steering axle; 103-Rear-wheel electric drive axle; 104-Air storage tank; 105-Drying tank; 106-Air compressor; 107-Rear axle suspension; 108-Leaf spring; 109-Shock absorber; 110-Holding structure; 111-U-shaped structural member; 112-Lower bracket; 113-Cooling system; 114-Radiator; 115-Cooling pot; 116-Cooling water pump; 117-Controller; 118-Cooling pipe; 119-Battery pack; 120-Connecting seat; 121-First connecting piece; 122-Second connecting piece; 123-Main longitudinal beam; 124-Variable section; 125-Cross beam. DETAILED DESCRIPTION

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without creative work are within the scope of protection of the present application.

[0031] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings. In addition, the terms "first," "second," "third," etc. are used only to distinguish the descriptions and are not to be understood as indicating or implying relative importance.

[0032] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0033] In the commercial vehicle sector, conventional fuel-powered vehicles will gradually be replaced by new energy vehicles. Therefore, the development of new energy vehicles, particularly in this area, is crucial. Conventional electric special-purpose vehicle chassis braking systems are dispersed within the vehicle frame assembly, making them difficult to quickly inspect and repair. Furthermore, the dispersed layout of components occupies a large space, significantly increasing the length of connecting pipelines and the number of connectors, leading to a high failure rate in the braking system.

[0034] In order to solve the above technical problems, the embodiments of the present application provide a chassis and a vehicle for an electric special-purpose vehicle.

[0035] Reference Figure 1 、 Figure 2 as well as Figure 3 As shown, an embodiment of the present application provides an electric special vehicle chassis, including a frame assembly 100 and a modular braking system 101; a front-wheel steering axle 102 and a rear-wheel electric drive axle 103 are provided on the frame assembly 100, and the modular braking system 101 is provided on the frame assembly 100 between the front-wheel steering axle 102 and the rear-wheel electric drive axle 103; the modular braking system 101 includes an air tank 104, a drying tank 105 and an air compressor 106 located on one side of the frame assembly 100 and arranged in sequence along the direction of travel of the vehicle; the air tank 104 is arranged close to the rear-wheel electric drive axle 103; the air inlet of the drying tank 105 is connected to the air compressor 106, and the air outlet is connected to the air tank 104; the compressed air generated by the air compressor 106 enters the air tank 104 through the drying tank 105, and the air tank 104 is connected to the brake on the rear-wheel electric drive axle 103 through the provided brake pipeline.

[0036] It should be noted that the electric special-purpose vehicle chassis of the embodiment of this application is versatile and can meet the chassis requirements of sanitation vehicles, logistics and transportation vehicles, refrigerated and insulated vehicles, wing-opening mobile vending vehicles, and climbing and lifting vehicles. Those skilled in the art can adapt the electric special-purpose vehicle chassis provided in the embodiment of this application to meet different requirements.

[0037] It should be noted that the modular braking system 101 provided in the embodiment of the present application is arranged on one side of the frame assembly 100, which can be the left side of the frame assembly 100 along the vehicle's traveling direction, or the right side of the frame assembly 100 along the vehicle's traveling direction.

[0038] In this embodiment of the present application, the air tank 104 is connected to the brake via a brake line. During braking, the compressed gas in the air tank 104 enters the brake cylinder through the brake line, pushing the piston to apply the brake. In this embodiment of the present application, the air tank 104 is positioned close to the rear electric drive axle 103, reducing the distance between the air tank 104 and the rear electric drive axle 103. This effectively shortens the brake line routing and allows for air connection using a shorter brake line.

[0039] Furthermore, the air tank 104, drying tank 105, and air compressor 106 of the embodiment of the present application are arranged sequentially along the vehicle's direction of travel. It should be noted that the air tank 104, drying tank 105, and air compressor 106 are arranged adjacent to each other, meaning that the spacing between them is small, achieving an integrated layout of the braking system. This facilitates maintenance and enhances brake system reliability, making the layout of the electric special-purpose vehicle chassis more scientific and rational.

[0040] The specific model of the air compressor 106 can be set by those skilled in the art as needed. For example, the air compressor 106 is a maintenance-free oil-free air compressor 106 with a capacity of 160 L / min.

[0041] The present embodiment provides a chassis for an electric special-purpose vehicle, including a frame assembly 100 and a modular braking system 101. The frame assembly 100 of the present embodiment is provided with a front-wheel steering axle 102 and a rear-wheel electric drive axle 103. The modular braking system 101 of the present embodiment is integrated with the frame assembly 100 between the front-wheel steering axle 102 and the rear-wheel electric drive axle 103, and is positioned close to the rear-wheel electric drive axle 103.

[0042] In the embodiment of the present application, the modular braking system 101 is integrated and arranged on one side of the frame assembly 100, so that the braking system is easy to repair and occupies a smaller installation space, making the chassis layout more compact and effectively reducing maintenance costs.

[0043] The modular braking system 101 of the embodiment of the present application includes an air tank 104, a drying tank 105 and an air compressor 106 located on one side of the frame assembly 100 and arranged in sequence along the direction of vehicle travel; wherein, the air tank 104 is arranged close to the rear wheel electric drive axle 103; through the above arrangement, the length of the brake line is greatly shortened, which can effectively reduce the vehicle failure rate and improve the safety and reliability of the special vehicle chassis.

[0044] The air inlet of the drying tank 105 of the embodiment of the present application is connected to the air compressor 106, and the air outlet is connected to the air storage tank 104; the compressed air generated by the air compressor 106 enters the air storage tank 104 through the drying tank 105, and the air storage tank 104 is connected to the brake on the rear wheel electric drive axle 103 through the provided brake pipeline.

[0045] Reference Figure 4 as well as Figure 5 As shown, as an optional embodiment, a rear axle suspension 107 connected to the frame assembly 100 is provided on the rear-wheel electric drive axle 103; the rear axle suspension 107 includes a leaf spring 108 and a shock absorber 109; both ends of the leaf spring 108 are hinged to the frame assembly 100, and the middle part of the leaf spring 108 is connected to the rear-wheel electric drive axle 103; the shock absorber 109 is located in the middle of the leaf spring 108 and the telescopic direction intersects with the extension direction of the leaf spring 108, one end of the shock absorber 109 is connected to the frame assembly 100, and the other end is connected to the clamping structure 110 provided on the leaf spring 108.

[0046] The shock absorber 109 of the present embodiment is configured to extend and retract vertically, dissipating the vibration energy generated by the up-and-down movement of the tire during travel. Combined with the leaf spring 108, this dissipates the vibration energy generated by the tire, preventing the vibration energy generated by the tire from directly impacting the vehicle frame assembly 100 during travel, effectively improving ride comfort. Furthermore, the leaf spring 108 has a strong support capacity, capable of supporting large loads, thereby better meeting the needs of heavy-load transportation.

[0047] It should be noted that the leaf spring 108 in the embodiment of the present application utilizes a lightweight leaf spring 108; the number of leaf springs 108 can be selected by those skilled in the art as needed. The leaf spring 108 can have a thickness of 14-18 mm and a width of 65-75 mm. The heat-treated hardness is 409-465 HB.

[0048] Reference Figure 4 as well as Figure 5 As shown, as an optional embodiment, the holding structure 110 is a U-shaped structural member 111 with an opening facing downward, a lower bracket 112 is provided at the open end of the U-shaped structural member 111, and the shock absorber 109 is vertically arranged and the lower end is hinged to the lower bracket 112.

[0049] The U-shaped structural member 111 of the present embodiment can be manufactured through integral casting. Both ends of the U-shaped structural member 111 are connected to the lower bracket 112. The shock absorber 109 is vertically arranged, with its lower end hinged to the lower bracket 112 and its upper end hinged to the vehicle assembly. This embodiment of the present invention can convert the vibration energy of the tire's up-and-down bouncing during driving into the flexible vibration of the leaf spring 108 and the up-and-down bouncing of the shock absorber, thereby dissipating most of the vibration energy and preventing it from being transmitted to the vehicle body, thereby improving vehicle stability and comfort.

[0050] The specific model of the shock absorber 109 can be selected by those skilled in the art according to needs and is not particularly limited.

[0051] For example, the shock absorber 109 adopts a hydraulic piston rod structure, and its durability performance test passability is not less than 1 million times. When the piston speed is 0.52m / s, its restoring damping is 4300±500N; its compression damping is 1500±300N.

[0052] Reference Figure 6 As shown, as an optional embodiment, it also includes a cooling system 113, which includes a radiator 114, a cooling pot 115, a cooling water pump 116 and a controller 117 that are integrated and arranged on the side of the front-wheel steering axle 102 away from the rear-wheel electric drive axle 103; the cooling water pump 116 can transport the coolant in the radiator 114 and the cooling pot 115 to the rear-wheel electric drive axle 103 through the provided cooling pipe 118, and the controller 117 is used to detect the temperature, pressure and flow of the coolant in the cooling pipe 118.

[0053] It should be noted that a cab is provided on the frame assembly 100, and the above-mentioned radiator 114, cooling pot 115, cooling water pump 116 and controller 117 are integrated and arranged under the cab. The integrated arrangement greatly shortens the length of the cooling pipe 118, saves chassis space and utilizes the cab to fully protect the above-mentioned systems.

[0054] Furthermore, the cooling water pipe is fixed in parallel to the inner side of the longitudinal beam of the frame assembly 100, which has an aesthetically pleasing appearance and fewer failure points; it saves the limited layout space on the inner side of the frame, creates more convenient conditions for the layout of other wiring harnesses and brake lines, and improves the overall quality of the vehicle.

[0055] Reference Figure 1 As shown, as an optional embodiment, it also includes a battery pack 119 arranged on the frame assembly 100 between the front wheel steering bridge 102 and the rear wheel electric drive bridge 103; the upper surface of the battery pack 119 is flush with the lower surface of the frame assembly 100.

[0056] A battery bracket is provided in the middle of the vehicle frame assembly 100 , and the battery pack 119 is fixed to the vehicle frame assembly 100 via the battery bracket.

[0057] In this embodiment of the present application, placing the battery pack 119 in the middle of the frame assembly 100 can help achieve a balanced weight distribution between the front and rear axles, thereby improving the vehicle's driving performance and traction. The battery pack 119 located in the middle of the chassis forms a solid structure between the front and rear, helping to disperse the impact force from the front or rear. Furthermore, this location can also reduce the risk of direct impact on the battery from a side collision, thereby effectively improving the safety of the battery pack.

[0058] Reference Figure 7 As shown, the battery bracket includes a plurality of connection seats 120 arranged circumferentially around the battery pack 119; the connection seat 120 includes a first connection member 121 fixedly connected to the side of the battery pack 119 and a second connection member 122 fixedly connected to the frame assembly 100.

[0059] Furthermore, the first connecting member 121 extends horizontally, and the second connecting member 122 extends vertically, and the first connecting member 121 and the second connecting member 122 form a T-shaped structural member.

[0060] It should be noted that both the first connecting member 121 and the second connecting member 122 can be fixedly connected using high-strength bolts.

[0061] The number of the connecting sockets 120 can be four, six, or eight, and those skilled in the art can make the selection according to their needs.

[0062] Compared with the prior art, the embodiment of the present application adopts multiple connecting sockets 120 to form a battery bracket, which can effectively reduce weight, greatly reduce the weight of the battery bracket, and improve the lightweight level of the entire vehicle.

[0063] Reference Figure 3 As shown, as an optional embodiment, the frame assembly 100 includes two main longitudinal beams 123 arranged parallel to each other; the main longitudinal beams 123 have a variable cross-section section 124; the variable cross-section section 124 extends from the front wheel steering axle 102 in a direction away from the rear wheel electric drive axle 103, and the cross-section gradually becomes smaller.

[0064] Furthermore, the main longitudinal beam 123 of the present application adopts a variable cross-section design, which can effectively reduce the weight of the frame assembly 100 while ensuring the load-bearing performance.

[0065] For example, the two main longitudinal beams 123 may be made of 610 high-strength steel, the outer width of the frame assembly 100 is 800 mm, and the wing width is 65 mm.

[0066] Among them, a plurality of spaced cross beams 125 are provided between the two main longitudinal beams 123. Figure 8 As shown, the cross section of the beam 125 is a π-shaped structure.

[0067] In the embodiment of the present application, a plurality of cross beams 125 are arranged at intervals between the two main longitudinal beams 123, which can greatly increase the overall rigidity and stability of the frame assembly 100 and greatly improve the torsional strength of the entire frame assembly 100. Furthermore, the cross beam 125 of the embodiment of the present application is a π-shaped structure and is connected to the two main longitudinal beams 123 on both sides. Compared with the rectangular cross section and the U-shaped cross section in the conventional technology, Figure 8 As shown, the crossbeam 125 of the embodiment of the present application can reduce weight while having good bending and torsional resistance and can withstand a large load.

[0068] The electric special vehicle chassis provided in this embodiment of the application utilizes a centrally mounted battery pack 119, a lightweight battery bracket, and a lightweight frame assembly 100, effectively improving the chassis's lightweightness. Furthermore, the highly integrated layout of this embodiment of the application can reduce vehicle failure rates and enhance product competitiveness.

[0069] In addition, an embodiment of the present application also provides a vehicle, including the above-mentioned electric special vehicle chassis.

[0070] It should be noted that the vehicle can be a sanitation vehicle, a logistics transport vehicle, a refrigerated and insulated vehicle, a wing-opening mobile vending vehicle, and a climbing and lifting vehicle. Those skilled in the art can use the electric special vehicle chassis provided in the embodiment of the present application to modify it to suit different needs.

[0071] The vehicle provided in the embodiment of the present application adopts the above-mentioned electric special vehicle chassis, and its chassis layout is more scientific and reasonable. Through modular layout design, the vehicle chassis is compact, highly reliable, and can be modified for various purposes, with strong versatility.

[0072] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. An electric special vehicle chassis, characterized in that: The invention comprises a vehicle frame assembly (100) and a modular brake system (101); the vehicle frame assembly (100) is provided with a front wheel steering axle (102) and a rear wheel electric drive axle (103); the modular brake system (101) is provided on the vehicle frame assembly (100) between the front wheel steering axle (102) and the rear wheel electric drive axle (103); the modular brake system (101) comprises an air storage tank (104), a drying tank (105), and a plurality of air storage tanks (106) located on one side of the vehicle frame assembly (100) and arranged in sequence along the direction of travel of the vehicle. 105) and an air compressor (106); the air storage tank (104) is arranged close to the rear wheel electric drive bridge (103); the air inlet of the drying tank (105) is connected to the air compressor (106), and the air outlet is connected to the air storage tank (104); the compressed air generated by the air compressor (106) passes through the drying tank (105) and enters the air storage tank (104), and the air storage tank (104) is connected to the brake on the rear wheel electric drive bridge (103) through a set brake pipeline.

2. The electric special vehicle chassis according to claim 1, characterized in that: The rear wheel electric drive axle (103) is provided with a rear axle suspension (107) connected to the frame assembly (100); the rear axle suspension (107) includes a leaf spring (108) and a shock absorber (109); both ends of the leaf spring (108) are hinged to the frame assembly (100), and the middle of the leaf spring (108) is connected to the rear wheel electric drive axle (103); the shock absorber (109) is located in the middle of the leaf spring (108) and its telescopic direction intersects with the extension direction of the leaf spring (108); one end of the shock absorber (109) is connected to the frame assembly (100), and the other end is connected to a clamping structure (110) provided on the leaf spring (108).

3. The electric special vehicle chassis according to claim 2, characterized in that: The holding structure (110) is a U-shaped structural member (111) with an opening facing downward, a lower bracket (112) is provided at the open end of the U-shaped structural member (111), and the shock absorber (109) is vertically arranged and the lower end is hinged to the lower bracket (112).

4. The electric special vehicle chassis according to any one of claims 1 to 3, characterized in that: The invention also includes a cooling system (113), wherein the cooling system (113) includes a radiator (114), a cooling pot (115), a cooling water pump (116), and a controller (117) which are integrated and arranged on a side of the front-wheel steering axle (102) away from the rear-wheel electric drive axle (103); the cooling water pump (116) can transport the coolant in the radiator (114) and the cooling pot (115) to the rear-wheel electric drive axle (103) through a provided cooling pipe (118); and the controller (117) is used to detect the temperature, pressure, and flow rate of the coolant in the cooling pipe (118).

5. The electric special vehicle chassis according to any one of claims 1 to 3, characterized in that: It also includes a battery pack (119) arranged on the vehicle frame assembly (100) between the front wheel steering axle (102) and the rear wheel electric drive axle (103); the upper surface of the battery pack (119) is flush with the lower surface of the vehicle frame assembly (100).

6. The electric special vehicle chassis according to claim 5, characterized in that: A battery bracket is provided in the middle of the vehicle frame assembly (100), and the battery pack (119) is fixed to the vehicle frame assembly (100) via the battery bracket.

7. The electric special vehicle chassis according to claim 6, characterized in that: The battery bracket comprises a plurality of connection seats (120) arranged at intervals in the circumferential direction around the battery pack (119); the connection seat (120) comprises a first connection member (121) fixedly connected to the side of the battery pack (119) and a second connection member (122) fixedly connected to the vehicle frame assembly (100).

8. The electric special vehicle chassis according to any one of claims 1 to 3, characterized in that: The vehicle frame assembly (100) comprises two main longitudinal beams (123) arranged parallel to each other; the main longitudinal beams (123) are provided with a variable cross-section section (124); the variable cross-section section (124) extends from the front wheel steering axle (102) in a direction away from the rear wheel electric drive axle (103), and the cross-section gradually becomes smaller.

9. The electric special vehicle chassis according to claim 8, characterized in that: A plurality of spaced-apart cross beams (125) are provided between the two main longitudinal beams (123), and the cross section of the cross beams (125) is a π-shaped structure.

10. A vehicle, characterized in that: include: The electric special-purpose vehicle chassis according to any one of claims 1 to 9.

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