Cab-free mining dump truck, frame and load uniform distribution method

Abstract

The invention discloses a frame which is a double-torsion beam and comprises a front shaft part ring beam, a rear shaft part ring beam and longitudinal beams, and the four longitudinal beams are connected between the front shaft part ring beam and the rear shaft part ring beam. A front longitudinal beam, platforms and a front oblique beam are arranged on the front portion of the frame, the front longitudinal beam is connected to the lower portion of the front portion of the front shaft ring beam, the two platforms are connected to the two sides of the upper portion of the front portion of the front shaft ring beam respectively, and the front oblique beam is connected between the platforms and the front oblique beam. And a hydraulic cylinder supporting beam is connected between two longitudinal beams which are transversely opposite to each other at the lower part of the frame. The invention further discloses a cab-free mining dump truck and a load uniform distribution method of the cab-free mining dump truck. The load distribution of the whole vehicle is more balanced, the unmanned operation mode is better adapted, and the service life of the whole vehicle is prolonged.

Description

Technical Field

[0001] The present invention belongs to the technical field of unmanned mining vehicles, and in particular relates to a mining dump truck without a cab, a vehicle frame and a load uniform distribution method. Background Art

[0002] Mining dump trucks are essential transport equipment in open-pit mining. Traditional mining trucks require a driver, so they are equipped with a cab. A ROPS (Rollover Protection System) structure is also designed on the platform to ensure driver safety. With the recent development of autonomous driving technology, the intelligence level of mining dump trucks has greatly improved. Mining trucks no longer require driver intervention during transportation operations, necessitating the design of a mining dump truck without a cab. Summary of the Invention

[0003] The purpose of the present invention is to provide a cab-less mining dump truck, a frame and a load distribution method, which can make the load distribution of the whole vehicle more balanced, better adapt to the unmanned operation mode, and help extend the service life of the whole vehicle.

[0004] To achieve the above objectives, the technical solutions used in the present invention are: The frame is a double torsion beam, including: a front axle ring beam, a rear axle ring beam, and a longitudinal beam. The four longitudinal beams are connected between the front axle ring beam and the rear axle ring beam; the front of the frame is provided with a front longitudinal beam, a platform, and a front oblique beam. The front longitudinal beam is connected to the front lower part of the front axle ring beam, and the two platforms are respectively connected to the two sides of the front upper part of the front axle ring beam. The front oblique beam is connected between the platform and the front oblique beam; a hydraulic cylinder support beam is connected between the two laterally opposite longitudinal beams at the lower part of the frame.

[0005] Furthermore, multiple battery box hangers are respectively provided on both sides of the frame, and the battery box hangers include: a load-bearing beam, a mounting seat, and a support frame. The load-bearing beam passes through and is connected to two laterally opposite longitudinal beams on the upper part of the frame, and the mounting seat is connected to the top of both ends of the load-bearing beam, and the mounting seat is located on the outside of the longitudinal beam; the support frame is connected to the outside of two laterally opposite longitudinal beams on the lower part of the frame, and the support frame is provided with multiple support frame through holes.

[0006] Furthermore, the rear axle ring beam is provided with a carriage hinge seat.

[0007] The frame of a cab-less mining dump truck includes: a frame, a car body, a battery box, a hydraulic oil tank, a control cabinet, an independent suspension of a lifting cylinder, and a drive motor assembly. The lower rear part of the car body is hinged to the car body hinge seat, a battery box is installed on the front longitudinal beam, and battery boxes are installed on the longitudinal beams on the left and right sides of the frame respectively, and the battery box is located between the front axle ring beam and the rear axle ring beam; the hydraulic oil tank is installed on the frame at the rear of the front axle ring beam, the control cabinet is installed at the rear of the rear axle ring beam, the bottom of the lifting cylinder is hinged to the hydraulic cylinder support beam, the four independent suspensions are respectively hinged to the lower part of the front axle ring beam and the rear axle ring beam, the drive motor assembly is articulated to the independent suspension, and the tire is installed on the wheel hub of the drive motor assembly.

[0008] Preferably, the battery box is fixed in the space enclosed by the front longitudinal beam, the platform, and the front diagonal beam, and the tires are arranged in a front 2 and rear 2 configuration.

[0009] Preferably, the platform is connected to the front axle ring beam and the front diagonal beam by bolts, and the side panels of the carriage are marked with recommended material loading points.

[0010] Preferably, the drive motor assembly includes: a wheel hub and a drive motor, the drive motor is installed inside the wheel hub, and the wheel hub is hinged to the independent suspension.

[0011] Preferably, the independent suspension includes: an upper fork arm, a lower fork arm, and a connecting column. The rear parts of the upper fork arm and the lower fork arm are hinged on both sides of the lower part of the front axle ring beam, and the rear parts of the upper fork arm and the lower fork arm are hinged on the lower part of the rear axle ring beam. The front parts of the upper fork arm and the lower fork arm are hinged to the wheel hub. The upper fork arm and the front axle ring beam are hinged at both ends of the connecting column located on the front axle ring beam, and the upper fork arm and the rear axle ring beam are hinged at both ends of the connecting column located on the rear axle ring beam.

[0012] Preferably, the steering system is connected to the drive motor assembly.

[0013] The load distribution method of a mining dump truck with a frame and no cab includes: The cab is eliminated, and the vehicle frame adopts a double torsion beam structure. The battery boxes are fixed at the front and both sides of the frame. The front longitudinal beam is connected to the lower front part of the front axle ring beam of the frame. The upper front part of the front axle ring beam is connected to the platform on both sides. The front diagonal beam is connected between the platform and the front diagonal beam. The battery box is installed in the space enclosed by the front longitudinal beam, platform, and front diagonal beam. The battery box is installed on the outside of the longitudinal beams on both sides of the frame. The left and right battery boxes are located between the front and rear axle ring beams, so that the center of gravity of the platform is close to the front axle ring beam, thereby increasing the stability of the platform. The lower rear part of the vehicle body is hinged to the vehicle body hinge seat. The hydraulic oil tank is installed at the rear of the front axle ring beam of the vehicle frame, and the control cabinet is installed at the rear of the rear axle ring beam. This ensures that the weight of the control cabinet and the length of the lever arm relative to the center of the vehicle are balanced with the weight of the hydraulic oil tank and the length of the lever arm relative to the center of the vehicle. The lifting cylinder is arranged on the inner side of the vehicle frame, and the bottom of the lifting cylinder is hinged to the hydraulic cylinder support beam to increase the space for the battery box. The four independent suspensions are hinged on both sides of the lower part of the front axle ring beam and the rear axle ring beam respectively. The drive motor assembly is hinged on the independent suspension. The tires are configured with 2 front and 2 rear tires. The tires are installed on the wheel hubs of the drive motor assembly respectively. The load distribution of the whole vehicle is 1:1 between the front and rear axles.

[0014] The technical effects of the present invention include: The cab-less mining dump truck provided by the present invention is designed based on unmanned driving technology. The cab and ROPS structure of the traditional mining dump truck are eliminated, and the structure of the entire vehicle is also changed accordingly. The load distribution of the entire vehicle is more balanced, and it can better adapt to the unmanned driving operation mode, which is conducive to extending the service life of the entire vehicle.

[0015] The load distribution of the cab-less mining dump truck is more balanced. The load on the front and rear axles of the mining truck is close to 1:1 in both empty and fully loaded states. The load of the entire vehicle is evenly distributed on the four wheels, reducing the cracking and wear of the vehicle body caused by uneven force, thereby greatly extending the service life of the entire vehicle.

[0016] To balance the mine car's load, the battery compartment is divided into three parts: the front battery compartment, the left battery compartment, and the right battery compartment. The front battery compartment is mounted on the front longitudinal beam of the vehicle frame, while the left and right battery compartments are respectively installed between the front and rear tires on the left and right sides, ensuring a balanced battery load. The weight of the front battery and platform is balanced by the weight of the vehicle compartment, achieving an even distribution of the vehicle's load front to back.

[0017] The tire configuration of the cab-less mining truck is different from the traditional mining dump truck's front 2 and rear 4. It adopts the front 2 and rear 2 configuration, which is adapted to the design concept of even load distribution of cab-less mining trucks. The load distribution of the whole vehicle is changed from the traditional front and rear axle 1:2 to the front and rear axle 1:1, which makes the force on the whole vehicle more evenly distributed and improves the service life of the vehicle.

[0018] The carriage is designed based on a cab-less mine car. The overall center of gravity of the carriage is closer to the front wheels than that of a traditional carriage, which can reduce the length of the entire vehicle. At the same time, the carriage is simulated to pull materials, and the recommended material loading points are marked on the side panels of the carriage, so that the load of the entire vehicle can be evenly distributed when the mine car is fully loaded.

[0019] The frame is designed to be evenly distributed, symmetrical front to back and left to right, to ensure uniform load distribution for cabless mining vehicles. To enhance its torsional resistance, the frame features a double torsion beam structure, comprised of front and rear axle ring beams and four central longitudinal beams. This structure effectively withstands impact loads from the vehicle body, lifting, and suspension, while also enhancing the frame's torsional resistance. The platform is bolted to the frame ring beam and front diagonal beam, creating a stable frame structure that also provides space for installation and removal of the battery compartment.

[0020] The hydraulic oil tank is located in the front center of the vehicle, facilitating oil intake and return to the hydraulic system. The control cabinet is located at the rear, opposite the hydraulic oil tank. Its weight and lever arm length relative to the center of the vehicle are essentially balanced with the weight and lever arm of the hydraulic oil tank.

[0021] The lifting cylinder is arranged on the inner side of the frame and supported by the hydraulic cylinder support beam at the bottom of the frame. This structure can enhance the lateral rigidity of the frame, while also making the spatial layout more reasonable, increasing the battery layout space, and improving the vehicle's power distribution.

[0022] The vehicle has a total of 4 drive motor assemblies, which are installed together with 4 tires respectively. It also adopts four-wheel independent suspension. The suspension components of the four wheels are interchangeable, so the weight of the drive motor assembly and suspension is evenly distributed on the four tires. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of the cab-less mining dump truck of the present invention; Figure 2 It is a structural schematic diagram of the vehicle frame of the present invention; Figure 3 It is a schematic structural diagram of the front longitudinal beam, platform, and front oblique beam in the present invention; Figure 4 This is a schematic diagram of the arrangement of the control cabinet, hydraulic oil tank, and lifting cylinder in the present invention; Figure 5 It is a structural schematic diagram of the independent suspension and drive motor assembly in the present invention. DETAILED DESCRIPTION

[0024] The following description sufficiently illustrates specific embodiments of the invention to enable those skilled in the art to practice and reproduce the invention.

[0025] like Figure 1 FIG. 1 is a schematic diagram of the overall structure of a mining dump truck without a cab according to the present invention.

[0026] The cabless mining dump truck includes: a frame 1, a battery box 2, a carriage 3, an independent suspension 4, a drive motor assembly 5, a control cabinet 6, a hydraulic oil tank 7, and a lifting cylinder 8. The cabless mining dump truck is designed based on unmanned driving technology and eliminates the cab of traditional mining dump trucks.

[0027] like Figure 2 As shown, it is a structural diagram of the frame 1 of the present invention; Figure 3 1 is a schematic structural diagram of the front longitudinal beam 14, the platform 15, and the front oblique beam 16 in the present invention.

[0028] The vehicle frame 1 includes a front axle ring beam 11 , a rear axle ring beam 12 , and longitudinal beams 13 . Four longitudinal beams 13 are connected between the front axle ring beam 11 and the rear axle ring beam 12 .

[0029] The frame 1 is adapted to the design concept of uniform load distribution for cabless mining vehicles. The overall structure is symmetrical front to back and left to right. To enhance the frame's torsional resistance, it is designed as a double torsion beam. The front and rear axle ring beams 11 and 12, along with four longitudinal beams 13 in the middle, form the double torsion beam framework. This effectively supports the impact loads from the carriage 6, lifting cylinders 10, and independent suspension 4, while also enhancing the torsional resistance of the frame 1. The rear axle ring beam 12 is provided with a carriage articulation seat 121, to which the lower rear portion of the carriage 3 is hinged.

[0030] The power battery is the power source of the cabless mining dump truck. The battery box 2 is used to store the power battery. It is relatively heavy, and the stress on the frame needs to be considered.

[0031] In order to balance the mine car load, battery boxes 2 are arranged at the front and on both sides of the frame 1. The front battery box 2 is mounted on the front longitudinal beam 14 of the frame 1, and the left and right battery boxes 2 are mounted on the left and right longitudinal beams 13 of the frame 2 respectively. The left and right battery boxes 2 are located between the front axle ring beam 11 and the rear axle ring beam 12, making rational use of the axial space of the mine car. At the same time, the left and right battery boxes 2 are designed to be components of the same weight, which well balances the force on the middle part of the frame 1 and greatly reduces the risk of cracking of the frame 1 due to uneven force.

[0032] In order to install and carry the battery box 2 at the front of the frame 1, a front longitudinal beam 14, a platform 15, and a front diagonal beam 16 are provided at the front of the frame 1. The front longitudinal beam 14 is connected to the front lower part of the front axle ring beam 11, and the two platforms 15 are respectively connected to the two sides of the front upper part of the front axle ring beam 11, and the front diagonal beam 16 is connected between the platform 15 and the front diagonal beam 16.

[0033] The platform 15 is connected to the front axle ring beam 11 and the front diagonal beam 16 by bolts. The front longitudinal beam 14, the platform 15, the front diagonal beam 16 and the front axle ring beam 11 are connected to form a stable frame structure, which improves the load-bearing strength. The space enclosed by the front longitudinal beam 14, the platform 15 and the front diagonal beam 16 is used to install and fix the battery box 2 located at the front, leaving space for installation and removal of the battery box 2. The battery box 2 does not need to be disassembled and installed on the platform 15 during installation and unloading, reducing the maintenance workload. In addition, since the installation space for the battery box 2 is reserved at the front, the overall weight of the platform 15 can be moved backward, and its center of gravity is closer to the front axle ring beam 11, which increases the stability of the platform 15.

[0034] In order to install and support the battery boxes 2 on both sides of the frame 1, multiple battery box hangers 17 are provided on each side of the frame 1. The battery box hangers 17 include a load-bearing beam 171, a mounting seat 172, and a support frame 173. The load-bearing beam 171 passes through and is connected to two laterally opposing longitudinal beams 13 on the upper portion of the frame 1. The mounting seats 172 are connected to the tops of both ends of the load-bearing beam 171 and are located on the outside of the longitudinal beams 13. The support frames 173 are connected to the outside of two laterally opposing longitudinal beams 13 on the lower portion of the frame 1. The support frames 17 are provided with multiple support frame through-holes. The back of the battery box 2 is connected to the battery box hanger 17. The load-bearing beam 171 is used to bear the weight of the battery box 2, and the support frame 17 is used to support the battery box 2. The battery box hanger 17 supports the weight of the battery box 2 while buffering lateral impact forces.

[0035] The side panels of carriage 3 are marked with recommended loading points 31, ensuring even distribution of the load even when the mine car is fully loaded. Furthermore, a downward-curved guard plate 32 is designed at the rear of carriage 3 to protect the frame 1 and control cabinet 6 from impacts caused by material when carriage 3 is lifted. Based on the design of a cabless mine car, carriage 3's center of gravity is positioned closer to the rear wheels and closer to the front wheels, thereby reducing the vehicle's overall length.

[0036] The weight of the battery box 2 and the platform 15 at the front is balanced by the weight of the vehicle compartment 3, thereby achieving the purpose of evenly distributing the load of the entire vehicle front to back.

[0037] like Figure 4 FIG. 1 is a schematic diagram showing the arrangement of the control cabinet 6 , the hydraulic oil tank 7 , and the lifting cylinder 8 in the present invention.

[0038] The hydraulic oil tank 7 is arranged in the front middle part of the frame 1, and is located behind the front axle ring beam 11, so as to facilitate oil suction and return of the hydraulic system.

[0039] The control cabinet 6 is arranged at the rear of the frame 1, behind the rear axle ring beam 12. The weight of the control cabinet 8 and the length of the lever arm relative to the center of the vehicle can basically balance the weight of the hydraulic oil tank 7 and the lever arm relative to the center of the vehicle.

[0040] A hydraulic cylinder support beam 18 is connected between two laterally opposing longitudinal beams 13 at the lower portion of the frame 1. The bottom of the lift cylinder 8 is hingedly connected to this support beam 18. The lift cylinder 8 is positioned inside the frame 1 and supported by the hydraulic cylinder support beam 18 at the lower portion. This structure enhances the lateral rigidity of the frame 1 while also streamlining the layout, increasing space for the battery compartment 2 and improving the vehicle's overall power distribution.

[0041] like Figure 5 , which is a schematic structural diagram of the independent suspension 4 and the drive motor assembly 5 in the present invention.

[0042] The vehicle has four drive motor assemblies 5, and four tires 51 are mounted on wheel hubs 52 of the drive motor assemblies 5. Unlike the conventional 2-in-front, 4-in-rear arrangement of conventional mining dump trucks, the cabless mining truck's tire 51 configuration employs 2 in-front, 2 in-rear, adapting to the cabless mining truck's design concept of evenly distributing loads. This changes the vehicle's load distribution from the traditional 1:2 ratio between the front and rear axles to a 1:1 ratio between the front and rear axles, resulting in more even load distribution and a longer service life.

[0043] The drive motor assembly 5 includes: a wheel hub 52 and a drive motor. The drive motor is installed inside the wheel hub 52. The wheel hub 52 is connected to the independent suspension 4. The four independent suspensions 4 are respectively hinged to the lower parts of the front axle ring beam 11 and the rear axle ring beam 12.

[0044] The weight of the drive motor assembly 5 and the independent suspension 4 is evenly distributed on the four tires 51. The steering system is connected to the drive motor assembly 5.

[0045] The independent suspension 4 includes: an upper fork arm 41, a lower fork arm 42, and a connecting column 43. The four pairs of upper fork arms 41 and lower fork arms 42 are hinged to the lower parts of the front axle ring beam 11 and the rear axle ring beam 12 respectively. The rear parts of the upper fork arms 41 and the lower fork arms 42 are hinged on both sides of the lower part of the front axle ring beam 11 respectively, and the rear parts of the upper fork arms 41 and the lower fork arms 42 are hinged on the lower part of the rear axle ring beam 12 respectively. The front parts of the upper fork arms 41 and the lower fork arms 42 are hinged to the wheel hub 52. The upper fork arms 41 and the front axle ring beam 11 are hinged at both ends of the connecting column 43 located at the front axle ring beam 11 respectively, and the upper fork arms 41 and the rear axle ring beam 12 are hinged at both ends of the connecting column 43 located at the rear axle ring beam 12 respectively.

[0046] The load distribution method for a cabless mining dump truck is as follows: 1. The cab is eliminated, and the vehicle frame 1 adopts a double torsion beam frame structure. The battery box 2 is fixed to the front and both sides of the vehicle frame 1. The front longitudinal beam 14 is connected to the front lower part of the front axle ring beam 11 of the vehicle frame 1. The front upper part of the front axle ring beam 11 is connected to the two sides of the platform 15. The front oblique beam 16 is connected between the platform 15 and the front oblique beam 16. 2. Install the battery box 2 in the space enclosed by the front longitudinal beam 14, the platform 15, and the front diagonal beam 16. Install the battery box 2 outside the longitudinal beams 13 on both sides of the frame 1. The left and right battery boxes 2 are located between the front axle ring beam 11 and the rear axle ring beam 12, so that the center of gravity of the platform 15 is close to the front axle ring beam 11, thereby increasing the stability of the platform 15. The battery box 2 is installed at the front and left and right sides of the frame 1 to balance the mine car load. The front battery box 2 is installed in front of the front longitudinal beam 16 of the frame, and the left and right battery boxes are installed between the front and rear tires 51 on the left and right sides respectively to balance the battery load.

[0047] 3. The lower rear portion of the carriage 3 is hinged to the carriage hinge seat 121. The hydraulic oil tank 7 is installed behind the front axle ring beam 11 of the frame 1, and the control cabinet 6 is installed behind the rear axle ring beam 12. The weight of the control cabinet 8 and the length of the lever arm relative to the center of the vehicle are balanced with the weight of the hydraulic oil tank 7 and the length of the lever arm relative to the center of the vehicle. The lifting cylinder 8 is arranged on the inner side of the frame 1, and the bottom of the lifting cylinder 8 is hinged to the hydraulic cylinder support beam 18, thereby increasing the space for arranging the battery box 2. 4. The four independent suspensions 4 are respectively hinged on both sides of the lower part of the front axle ring beam 11 and the rear axle ring beam 12. The drive motor assembly 5 is hinged on the independent suspension 4. The tires 51 adopt a front 2 and rear 2 configuration. The tires 51 are respectively installed on the wheel hubs 52 of the drive motor assembly 5. The load distribution of the whole vehicle is 1:1 between the front and rear axles.

[0048] The terms used in this invention are descriptive and exemplary, rather than restrictive. Since the present invention can be embodied in a variety of forms without departing from the spirit or essence of the technical solution, it should be understood that the above-described embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope of the appended claims. Therefore, all changes and modifications that fall within the scope of the claims or their equivalents are intended to be covered by the appended claims.

Claims

1. A vehicle frame, characterized in that: The frame is a double torsion beam, and its structure includes: a front axle ring beam, a rear axle ring beam, and a longitudinal beam. The four longitudinal beams are connected between the front axle ring beam and the rear axle ring beam; the front part of the frame is provided with a front longitudinal beam, a platform, and a front oblique beam. The front longitudinal beam is connected to the front lower part of the front axle ring beam, and the two platforms are respectively connected to the two sides of the front upper part of the front axle ring beam, and the front oblique beam is connected between the platform and the front oblique beam; a hydraulic cylinder support beam is connected between the two laterally opposite longitudinal beams at the lower part of the frame.

2. The frame according to claim 1, wherein: There are multiple battery box hangers on both sides of the frame. The battery box hangers include: a load-bearing beam, a mounting seat, and a support frame. The load-bearing beam passes through and is connected to the two laterally opposite longitudinal beams on the upper part of the frame. The mounting seat is connected to the top of both ends of the load-bearing beam, and the mounting seat is located on the outside of the longitudinal beam; the support frame is connected to the outside of the two laterally opposite longitudinal beams on the lower part of the frame, and the support frame is provided with multiple support frame through holes.

3. The frame according to claim 1, wherein: The rear axle ring beam is provided with a carriage articulated seat.

4. A mining dump truck with a frame and no cab, characterized in that: The vehicle frame according to any one of claims 1 to 3 is provided, and further includes: a vehicle body, a battery box, a hydraulic oil tank, a control cabinet, an independent suspension of a lifting cylinder, and a drive motor assembly. The lower rear portion of the vehicle body is hinged to the vehicle body hinge seat, a battery box is mounted on the front longitudinal beam, and battery boxes are respectively mounted on the longitudinal beams on the left and right sides of the frame, and the battery box is located between the front axle ring beam and the rear axle ring beam; the hydraulic oil tank is mounted on the vehicle body rearward of the front axle ring beam, the control cabinet is mounted on the rear of the rear axle ring beam, the bottom of the lifting cylinder is hinged to the hydraulic cylinder support beam, the four independent suspensions are respectively hinged to the lower parts of the front axle ring beam and the rear axle ring beam, the drive motor assembly is hinged to the independent suspension, and the tire is mounted on the wheel hub of the drive motor assembly.

5. The frame-less cab mining dump truck according to claim 4, characterized in that: The battery box is fixed in the space enclosed by the front longitudinal beam, platform, and front diagonal beam, and the tires are configured with 2 in front and 2 in the rear.

6. The frame-less cab mining dump truck according to claim 4, characterized in that: The platform is connected to the front axle ring beam and the front diagonal beam by bolts, and the recommended loading points for materials are marked on the side panels of the car.

7. The frame-less cab mining dump truck according to claim 4, characterized in that: The drive motor assembly includes: a wheel hub and a drive motor. The drive motor is installed inside the wheel hub, and the wheel hub is hinged to the independent suspension.

8. The frame-less cab mining dump truck according to claim 4, characterized in that: The independent suspension includes: an upper wishbone, a lower wishbone, and a connecting column. The rear parts of the upper wishbone and the lower wishbone are hinged on both sides of the lower part of the front axle ring beam, and the rear parts of the upper wishbone and the lower wishbone are hinged on the lower part of the rear axle ring beam. The front parts of the upper wishbone and the lower wishbone are hinged to the wheel hub. The connecting column located at the front axle ring beam is hinged to the upper wishbone and the front axle ring beam at both ends, and the connecting column located at the rear axle ring beam is hinged to the upper wishbone and the rear axle ring beam at both ends.

9. The frame-less cab mining dump truck according to claim 4, characterized in that: The steering system is connected to the drive motor assembly.

10. The load distribution method for a mining dump truck with a frame and no cab as claimed in claim 4, characterized in that: include: The cab is eliminated, and the vehicle frame adopts a double torsion beam structure. The battery boxes are fixed at the front and both sides of the frame. The front longitudinal beam is connected to the lower front part of the front axle ring beam of the frame. The upper front part of the front axle ring beam is connected to the platform on both sides. The front diagonal beam is connected between the platform and the front diagonal beam. The battery box is installed in the space enclosed by the front longitudinal beam, platform, and front diagonal beam. The battery box is installed on the outside of the longitudinal beams on both sides of the frame. The left and right battery boxes are located between the front and rear axle ring beams, so that the center of gravity of the platform is close to the front axle ring beam, thereby increasing the stability of the platform. The lower rear part of the vehicle body is hinged to the vehicle body hinge seat. The hydraulic oil tank is installed at the rear of the front axle ring beam of the vehicle frame, and the control cabinet is installed at the rear of the rear axle ring beam. This ensures that the weight of the control cabinet and the length of the lever arm relative to the center of the vehicle are balanced with the weight of the hydraulic oil tank and the length of the lever arm relative to the center of the vehicle. The lifting cylinder is arranged on the inner side of the vehicle frame, and the bottom of the lifting cylinder is hinged to the hydraulic cylinder support beam to increase the space for the battery box. The four independent suspensions are hinged on both sides of the lower part of the front axle ring beam and the rear axle ring beam respectively. The drive motor assembly is hinged on the independent suspension. The tires are configured with 2 front and 2 rear tires. The tires are installed on the wheel hubs of the drive motor assembly respectively. The load distribution of the whole vehicle is 1:1 between the front and rear axles.

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