Chassis structure of pure electric mining dump truck

Abstract

The utility model relates to the technical field of vehicles, in particular to a chassis structure of a pure electric mining dump truck, which comprises a frame. A front axle body, a middle axle body and a rear axle body are sequentially arranged below the frame from front to back, an electric steering oil pump is arranged on the front side of the front axle body, and the middle axle body is connected with the rear axle body through a rear axle transmission shaft. A cooling system and a driving motor are arranged in the frame, the cooling system is located on the front side of the frame, an electric air conditioner compressor is arranged on one side of the cooling system, the driving motor is connected with a transmission, and the transmission is connected with the middle axle body through a middle axle transmission shaft. Power battery assemblies are arranged on the two sides of the middle of the frame; a cab and a hydraulic lifting system are arranged above the vehicle frame, a right platform is arranged on one side of the cab, and a high-pressure control box is arranged on the right platform. According to the utility model, the center of mass is low, the rollover risk of the vehicle is reduced, and the whole vehicle is short in pipeline and convenient to install and maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a chassis structure of a pure electric mining dump truck. Background Art

[0002] Against the backdrop of the country's realization of the "dual carbon" goal and the construction of a new development pattern of dual circulation, electrification has become one of the important directions for the green development of construction machinery. As an important part of construction machinery, the electrification trend of mining dump trucks will become increasingly obvious in the future.

[0003] For the common heavy-load downhill conditions in mining areas, such as metal mines, cement mines, sand and gravel mines, etc., pure electric mining dump trucks can achieve the effect of a "perpetual motion machine" by relying on their own brake energy recovery function to go uphill with no load and go downhill with heavy load, which has huge commercial value.

[0004] Currently, the most common electric mining dump trucks on the market are battery-back type solutions. This type of solution has a long vehicle size and a high center of gravity, which results in poor vehicle passability and increased risk of rollover. In addition, the layout is loose and the vehicle pipelines are long, which is not conducive to improving the performance of the vehicle. Summary of the invention

[0005] In order to solve the problems in the prior art that the electric mining dump truck has a long vehicle size and a high center of mass, which leads to poor vehicle passability and a high risk of rollover, the utility model proposes a chassis structure of a pure electric mining dump truck with a low center of mass, which reduces the risk of vehicle rollover, and has a short vehicle pipeline line, which is easy to install and maintain.

[0006] In order to achieve the above purpose, the technical solution of the utility model is:

[0007] A pure electric mining dump truck chassis structure, comprising a frame;

[0008] A front axle body, a middle axle body and a rear axle body are arranged in sequence from front to rear below the frame, an electric steering oil pump is arranged at the front side of the front axle body, and the middle axle body is connected to the rear axle body through a rear axle drive shaft;

[0009] A heat dissipation system and a drive motor are arranged inside the frame, the heat dissipation system is located at the front side of the frame, an electric air-conditioning compressor is arranged on one side of the heat dissipation system, the drive motor is connected to a transmission, and the transmission is connected to the middle bridge body through the middle bridge transmission shaft;

[0010] Power battery assemblies are arranged on both sides of the middle part of the frame;

[0011] A cab and a hydraulic lifting system are arranged above the frame, a right platform is arranged on one side of the cab, a high-voltage control box is arranged on the right platform, the high-voltage control box is connected to the power battery assembly through a high-voltage line, and the high-voltage control box is respectively connected to the cooling system, the drive motor and the electric steering oil pump.

[0012] Furthermore, the high-voltage control box is provided with a high-voltage distribution box, a drive motor controller, an all-in-one controller, an electric air compressor, a low-voltage distribution box and a battery assembly, and the power battery assembly is sequentially connected to the high-voltage distribution box and the all-in-one controller through a high-voltage line;

[0013] The all-in-one controller is respectively connected to the drive motor controller, the electric air compressor, the electric air conditioning compressor, and the electric steering oil pump;

[0014] The battery assembly is connected to the high-voltage distribution box and the low-voltage distribution box respectively. The low-voltage distribution box is externally connected to accessories such as car lights and speakers. The battery assembly is used to increase the low-voltage electricity.

[0015] Furthermore, a cab heating system is provided inside the cab, the cab heating system is connected to an all-in-one controller, and the cab heating system is located above the right platform.

[0016] Furthermore, a battery thermal management system is arranged at the rear side of the high-voltage control box, and the battery thermal management system includes a battery cooling unit and a battery heating PTC. The battery cooling unit is externally connected to two cooling water channels 1, and the two cooling water channels 1 are respectively arranged outside the power battery assembly on both sides of the frame;

[0017] The battery heating PTC is located below the battery cooling unit. The battery cooling unit and the battery heating PTC are both connected to an all-in-one controller. The battery cooling unit, the battery heating PTC and the power battery assembly are all located in the middle of the frame.

[0018] Furthermore, a motor thermal management system is provided on the right platform, and the motor thermal management system includes a cooling water circuit 2 and an electronic water pump. The electronic water pump is located on the rear side of the heat dissipation system. The cooling water circuit 2 passes through the drive motor, the drive motor controller, the all-in-one controller, the electronic water pump and the heat dissipation system in sequence and then returns to the drive motor.

[0019] Furthermore, it also includes a brake air circuit system, which includes a dryer, an electric air compressor and an air cylinder device. The front axle body, the middle axle body and the rear axle body are respectively provided with a front axle brake, a middle axle brake and a rear axle brake on one side. The air cylinder device is connected to the front axle brake, the middle axle brake and the rear axle brake through air circuit pipelines. There are multiple air cylinder devices, and the multiple air cylinder devices correspond to the front axle brake, the middle axle brake and the rear axle brake respectively. The electric air compressor is located on the right platform, and the air cylinder device is located on the rear side of the cab.

[0020] Furthermore, the drive motor is located below the right platform, the power battery assembly is located between the front axle and the middle axle, and the power battery assembly is located on both sides of the lower wing surface of the frame.

[0021] Furthermore, the electric steering oil pump and the rear axle drive shaft are both located inside the vehicle frame.

[0022] Through the above technical solution, the beneficial effects of the utility model are:

[0023] The utility model arranges the power battery assembly on the left and right sides of the frame, which not only fully utilizes the layout space of the chassis and improves the convenience of maintenance. At the same time, due to the large mass of the power battery, arranging it in the lower part is more conducive to lowering the center of gravity of the whole vehicle, thereby reducing the risk of vehicle rollover.

[0024] The utility model arranges most of the high-voltage control modules in the high-voltage control box. Since the high-voltage control module is a component with a high frequency of maintenance and debugging, it is arranged on the right platform, which improves the convenience of maintenance and can also protect the high-voltage assembly in harsh working conditions such as mining areas.

[0025] The utility model arranges the heat dissipation system, the electric steering oil pump, the drive motor, the transmission, the middle bridge drive shaft and the rear bridge drive shaft in sequence from front to rear in the middle of the frame, which is more conducive to making full use of the oncoming wind and improving the heat dissipation efficiency; at the same time, the electric steering oil pump is closer to the steering gear, which can reduce the length of the steering oil circuit and improve the steering response time; it can also reduce the length of the drive shaft and improve the smoothness of the whole vehicle.

[0026] This new type of device is used, by arranging the flagship of all-in-one controller, high-voltage distribution box, motor controller and other components inside the high-voltage control box, which greatly reduces the length of the high-voltage wires between the various components and improves the compactness; at the same time, the high-voltage distribution box is close to the power battery assembly on both sides of the frame, the drive motor, electric air-conditioning compressor, electric air compressor, electric steering oil pump and cab heater are arranged around the all-in-one controller below the motor controller, which reduces the length of the corresponding high-voltage wires and improves the convenience of maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is an overall schematic diagram of the chassis structure of a pure electric mining dump truck of the utility model;

[0028] Figure 2 This is a top view schematic diagram of a chassis structure of a pure electric mining dump truck of the utility model;

[0029] Figure 3 It is a schematic diagram of a frame in a chassis structure of a pure electric mining dump truck of the utility model;

[0030] Figure 4 This is a front view schematic diagram of a chassis structure of a pure electric mining dump truck of the utility model;

[0031] Figure 5 This is a rear schematic diagram of a chassis structure of a pure electric mining dump truck of the utility model;

[0032] Figure 6 The utility model is a schematic diagram of a high-voltage control box in a chassis structure of a pure electric mining dump truck.

[0033] The reference numerals in the accompanying drawings are:

[0034] 1. Cab; 2. Air tank device; 3. Hydraulic lifting system; 4. Battery thermal management system; 5. Power battery assembly; 6. Frame; 8. Drive motor; 9. Middle axle drive shaft; 10. Middle axle body; 11. Rear axle drive shaft; 12. Rear axle body; 13. Front axle body; 14. High-voltage distribution box; 15. Electric air compressor; 16. All-in-one controller; 17. Drive motor controller; 18. Battery assembly; 19. High-voltage control box; 20. Electric air conditioning compressor; 21. Cooling system; 22. Cab heating system; 23. Right platform; 24. Transmission; 25. Battery heating PTC; 26. Battery cooling unit; 27. Electronic water pump. DETAILED DESCRIPTION

[0035] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments:

[0036] In the description of the present invention, it should be understood that the terms "left", "right", "up", "down", "horizontal", "vertical" and the like indicate directions or positional relationships based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0037] Embodiment 1

[0038] like Figure 1 to Figure 6As shown, a pure electric mining dump truck chassis structure includes a frame 6;

[0039] A front axle body 13, a middle axle body 10 and a rear axle body 12 are sequentially arranged below the vehicle frame 6 from front to rear. An electric steering oil pump is arranged at the front side of the front axle body 13. The middle axle body 10 is connected to the rear axle body 12 via a rear axle transmission shaft 11.

[0040] The frame 6 is provided with a heat dissipation system 21 and a drive motor 8. The heat dissipation system 21 is located at the front side of the frame 6. An electric air-conditioning compressor 20 is provided on one side of the heat dissipation system 21. The drive motor 8 is connected to a transmission 24. The transmission 24 is connected to the middle bridge body 10 through the middle bridge transmission shaft 9.

[0041] The power battery assembly 5 is arranged on both sides of the middle part of the frame 6;

[0042] A cab 1 and a hydraulic lifting system 3 are arranged above the frame 6, a right platform 23 is arranged on one side of the cab 1, a high-voltage control box 19 is arranged on the right platform 23, and the high-voltage control box 19 is connected to the power battery assembly 5 through a high-voltage line. The high-voltage control box 19 is respectively connected to the cooling system 21, the drive motor 8 and the electric steering oil pump.

[0043] In addition, the high-voltage control box 19 is provided with a high-voltage distribution box 14, a drive motor controller 17, an all-in-one controller 16, an electric air compressor 15, a low-voltage distribution box and a battery assembly 18, and the power battery assembly 5 is sequentially connected to the high-voltage distribution box 14 and the all-in-one controller 16 through a high-voltage line;

[0044] The all-in-one controller 16 is respectively connected to the drive motor controller 17, the electric air compressor 15, the electric air conditioning compressor 20, and the electric steering oil pump, and has a compact structure, convenient maintenance, and can reduce the length of the high-voltage wiring harness;

[0045] The battery assembly 18 is connected to the high-voltage distribution box 14 and the low-voltage distribution box respectively. The low-voltage distribution box is externally connected to accessories such as lights and speakers. The battery assembly 18 is used to increase the low-voltage electricity.

[0046] Specifically, a cab heating system 22 is disposed inside the cab 1 , and the cab heating system 22 is connected to the all-in-one controller 16 . The cab heating system 22 is located above the right platform 23 .

[0047] In this embodiment, a battery thermal management system 4 is arranged at the rear side of the high-voltage control box 19, and the battery thermal management system 4 includes a battery cooling unit 26 and a battery heating PTC 25. The battery cooling unit 26 is externally connected to two cooling water channels 1, and the two cooling water channels 1 are respectively arranged on the outside of the power battery assembly 5 on both sides of the frame 6;

[0048] The battery heating PTC25 is located below the battery cooling unit 26. The battery cooling unit 26 and the battery heating PTC25 are both connected to the all-in-one controller 16. The battery cooling unit 26, the battery heating PTC25 and the power battery assembly 5 are all located in the middle of the frame 6, which can effectively reduce the length of the cooling water channel 1, improve the thermal management efficiency, facilitate maintenance and reduce costs.

[0049] In this embodiment, a motor thermal management system is provided on the right platform 23, and the motor thermal management system includes a cooling water circuit 2 and an electronic water pump 27. The electronic water pump 27 is located on the rear side of the heat dissipation system 21. The cooling water circuit 2 passes through the drive motor 8, the drive motor controller 17, the all-in-one controller 16, the electronic water pump 27 and the heat dissipation system 21 in sequence and then returns to the drive motor 8. By arranging the motor thermal management system above and below the right platform 23, the length of the cooling water circuit 2 can be effectively reduced.

[0050] In this embodiment, a brake air circuit system is also included, which includes a dryer, an electric air compressor 15 and an air reservoir device 2. The front axle body 13, the middle axle body 10 and the rear axle body 12 are respectively provided with a front axle brake, a middle axle brake and a rear axle brake on one side. The air reservoir device 2 is connected to the front axle brake, the middle axle brake and the rear axle brake through air circuit pipelines. There are multiple air reservoir devices 2, and the multiple air reservoir devices 2 correspond to the front axle brake, the middle axle brake and the rear axle brake respectively. The electric air compressor 15 is located on the right platform 23, and the air reservoir device 2 is located on the rear side of the cab 1, which can effectively reduce the length of the brake circuit.

[0051] In this embodiment, the drive motor 8 is located below the right platform 23, the power battery assembly 5 is located between the front axle and the middle axle, and the power battery assembly 5 is located on both sides of the lower wing surface of the frame 6, which makes full use of the layout space of the chassis and improves the convenience of maintenance. At the same time, due to the large mass of the power battery, arranging it in the lower part is more conducive to lowering the center of gravity of the vehicle, thereby reducing the risk of vehicle rollover.

[0052] In this embodiment, the electric steering oil pump and the rear axle drive shaft 11 are both located inside the vehicle frame 6 , and the electric steering oil pump 7 and the rear axle drive shaft 11 are supported and protected by a bracket.

[0053] The embodiments described above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structures, features and principles described in the patent scope of the present invention should be included in the patent application scope of the present invention.

Claims

1. A pure electric mining dump truck chassis structure, characterized in that: including a frame (6); A front axle body (13), a middle axle body (10) and a rear axle body (12) are arranged in sequence from front to rear below the vehicle frame (6); an electric steering oil pump is arranged on the front side of the front axle body (13); and the middle axle body (10) is connected to the rear axle body (12) via a rear axle drive shaft (11); A heat dissipation system (21) and a drive motor (8) are arranged inside the vehicle frame (6); the heat dissipation system (21) is located at the front side of the vehicle frame (6); an electric air-conditioning compressor (20) is arranged on one side of the heat dissipation system (21); the drive motor (8) is connected to a transmission (24); and the transmission (24) is connected to the middle bridge body (10) via a middle bridge transmission shaft (9); Power battery assemblies (5) are arranged on both sides of the middle of the vehicle frame (6); A cab (1) and a hydraulic lifting system (3) are arranged above the vehicle frame (6); a right platform (23) is arranged on one side of the cab (1); a high-voltage control box (19) is arranged on the right platform (23); the high-voltage control box (19) is connected to the power battery assembly (5) via a high-voltage line; the high-voltage control box (19) is respectively connected to the cooling system (21), the drive motor (8) and the electric steering oil pump.

2. A pure electric mining dump truck chassis structure according to claim 1, characterized in that: The high-voltage control box (19) is provided with a high-voltage distribution box (14), a drive motor controller (17), an all-in-one controller (16), an electric air compressor (15), a low-voltage distribution box and a battery assembly (18), and the power battery assembly (5) is sequentially connected to the high-voltage distribution box (14) and the all-in-one controller (16) via a high-voltage line; The all-in-one controller (16) is respectively connected to the drive motor controller (17), the electric air compressor (15), the electric air conditioning compressor (20), and the electric steering oil pump; The battery assembly (18) is respectively connected to the high-voltage distribution box (14) and the low-voltage distribution box.

3. A pure electric mining dump truck chassis structure according to claim 2, characterized in that: A cab heating system (22) is provided on one side of the cab (1), and the cab heating system (22) is connected to an all-in-one controller (16).

4. The chassis structure of a pure electric mining dump truck according to claim 2 is characterized in that: A battery thermal management system (4) is arranged at the rear side of the high-voltage control box (19), the battery thermal management system (4) comprising a battery cooling unit (26) and a battery heating PTC (25), the battery cooling unit (26) being externally connected to two cooling water circuits 1, the two cooling water circuits 1 being arranged respectively on the outside of the power battery assembly (5) on both sides of the vehicle frame (6); The battery heating PTC (25) is located below the battery cooling unit (26), and the battery cooling unit (26) and the battery heating PTC (25) are both connected to the all-in-one controller (16).

5. The chassis structure of a pure electric mining dump truck according to claim 2 is characterized in that: The right platform (23) is provided with a motor thermal management system, the motor thermal management system comprising a cooling water circuit 2 and an electronic water pump (27), the electronic water pump (27) being located at the rear side of the heat dissipation system (21), the cooling water circuit 2 sequentially passes through the drive motor (8), the drive motor controller (17), the all-in-one controller (16), the electronic water pump (27) and the heat dissipation system (21) before returning to the drive motor (8).

6. The chassis structure of a pure electric mining dump truck according to claim 1, characterized in that: The invention also includes a brake air circuit system, the brake air circuit system including a dryer, an electric air compressor (15) and an air storage device (2), the front axle body (13), the middle axle body (10) and the rear axle body (12) are respectively provided with a front axle brake, a middle axle brake and a rear axle brake on one side, the air storage device (2) is respectively connected to the front axle brake, the middle axle brake and the rear axle brake through air circuit pipelines, the electric air compressor (15) is located on the right platform (23), and the air storage device (2) is located on the rear side of the cab (1).

7. The chassis structure of a pure electric mining dump truck according to claim 1, characterized in that: The drive motor (8) is located below the right platform (23), the power battery assembly (5) is located between the front axle and the middle axle, and the power battery assembly (5) is located on both sides of the lower wing surface of the vehicle frame (6).

8. The chassis structure of a pure electric mining dump truck according to claim 1, characterized in that: The electric steering oil pump and the rear axle drive shaft (11) are both located inside the vehicle frame (6).

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