Frame of electrically-driven mining dump truck and electrically-driven mining dump truck

Abstract

The invention relates to a frame of an electrically-driven mining dump truck and the electrically-driven mining dump truck. The frame of the electrically-driven mining dump truck comprises two longitudinal beams, the length extending direction of each longitudinal beam is consistent with the first direction, and the two longitudinal beams are arranged in the second direction in a spaced mode; the at least two motor mounting frames are arranged at intervals in the first direction, and each motor mounting frame is connected with the two longitudinal beams; and a plurality of motors, wherein one motor or two motors are arranged in each motor mounting rack. The motor mounting frame can serve as a beam of the frame, the structural strength of the frame is improved, and a mounting position is provided for the motor. Each motor mounting frame is provided with a motor, and the motors can be distributed at different positions of the frame, so that the weight distribution of the whole vehicle is optimized, and the controllability and the stability of the vehicle are improved; and each motor can independently control the corresponding wheel, so that the power transmission path is shortened, finer torque distribution and steering control are realized, and the dynamic response capability and the driving safety of the vehicle are improved.

Description

Technical Field

[0001] The present disclosure relates to the field of construction machinery, and in particular to a frame of an electric drive mining dump truck and an electric drive mining dump truck. Background Art

[0002] Based on the requirements of energy conservation, emission reduction, low carbon and environmental protection, the new energy transformation of high-energy-consuming mining dump trucks has become an industry trend. At present, traditional fuel-powered wide-body trucks and mining dump trucks are transformed from being driven by fossil fuel engines to pure electric or hybrid drives. Limited by the configuration of traditional dump trucks, only the engine compartment area can be used for the installation of range extenders and power batteries, and the space is small, which severely restricts the operation efficiency after vehicle modification. In addition, for mining vehicles with traditional frame configurations, central drive is generally adopted, the transmission link is long, the system response time is long, and the energy loss is relatively high.

[0003] The traditional frame cannot meet the installation of walking motors for distributed electric drive mining dump trucks with better performance. The space available for the frame is limited, which is extremely disadvantageous to the development of new energy mining trucks. Therefore, there is an urgent need for a frame that can provide a more sufficient and reasonable installation space for distributed electric drive devices and better frame load-bearing capacity. Summary of the Invention

[0004] Some embodiments of the present disclosure provide a frame of an electric drive mining dump truck and an electric drive mining dump truck, which are used to alleviate the problem of insufficient installation space for electric drive devices.

[0005] In one aspect of the present disclosure, there is provided a frame of an electric drive mining dump truck, including:

[0006] Two longitudinal beams, the length extension direction of each longitudinal beam is consistent with the first direction, and the two longitudinal beams are spaced apart along the second direction;

[0007] At least two motor mounts, spaced apart along the first direction, and each motor mount is connected to the two longitudinal beams; and

[0008] Multiple motors, one or two motors are provided in each motor mount.

[0009] In some embodiments, the motor mount includes:

[0010] Two first beams, respectively connected to the two longitudinal beams in one-to-one correspondence; and

[0011] A second beam, connecting the two first beams, the second beam is configured as a hollow structure, and the motor is arranged in the hollow structure.

[0012] In some embodiments, the frame of the electric drive mining dump truck further includes a fork arm, a connection portion is provided on the first beam, and the connection portion is connected to the fork arm.

[0013] In some embodiments, the frame of the electric drive mining dump truck further includes at least two gantry beams spaced apart along the first direction. Each gantry beam connects the two longitudinal beams, and each gantry beam is arranged corresponding to an electric motor mounting bracket vertically.

[0014] In some embodiments, the frame of the electric drive mining dump truck includes a plurality of wheels, and the electric motor disposed on each electric motor mounting bracket is drivingly connected to the wheels on the corresponding side.

[0015] In some embodiments, the frame of the electric drive mining dump truck further includes:

[0016] A lifting beam disposed between two adjacent electric motor mounting brackets at the foremost part of the electric drive mining dump truck, and a first support is provided on the lifting beam; and

[0017] A lifting oil cylinder, the first end of which is rotatably connected to the first support, and the second end is configured to be rotatably connected to the cargo box.

[0018] In some embodiments, the frame of the electric drive mining dump truck further includes a second support and at least two gantry beams spaced apart along the first direction. Each gantry beam connects the two longitudinal beams, the second support is disposed on the gantry beam at the rearmost part of the electric drive mining dump truck, and the second support is configured to be rotatably connected to the cargo box.

[0019] In some embodiments, the frame of the electric drive mining dump truck further includes:

[0020] A third support disposed on the gantry beam;

[0021] A fork arm disposed on the electric motor mounting bracket; and

[0022] A suspension oil cylinder, which is rotatably connected to the third support and the fork arm respectively.

[0023] In some embodiments, the frame of the electric drive mining dump truck further includes a range extender, a power battery, a controller and an actuator. The range extender, the power battery, the controller and the actuator are disposed in the spaces formed between the two longitudinal beams, between two adjacent electric motor mounting brackets and between two adjacent gantry beams, and in the space formed between the gantry beam and the electric motor mounting bracket.

[0024] In one aspect of the present disclosure, there is provided an electric drive mining dump truck including the frame of the above-mentioned electric drive mining dump truck.

[0025] Based on the above technical solutions, the present disclosure has at least the following beneficial effects:

[0026] In some embodiments, the motor mounting bracket is located between two longitudinal beams and connects the two longitudinal beams. The motor mounting bracket can serve as a beam of the vehicle frame, improving the structural strength of the vehicle frame and providing a mounting position for the motor. At least two motor mounting brackets are arranged at intervals along the first direction X. Motors are arranged on each motor mounting bracket, enabling the motors to be distributed at different positions of the vehicle frame to optimize the weight distribution of the whole vehicle, improve the controllability and stability of the vehicle; and each motor can independently control the corresponding wheel, shortening the power transmission path, achieving more precise torque distribution and steering control, and enhancing the dynamic response ability and driving safety of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings described herein are used to provide a further understanding of the present disclosure and form a part of the present disclosure. The illustrative embodiments and descriptions thereof of the present disclosure are used to explain the present disclosure and do not constitute an improper limitation of the present disclosure. In the drawings:

[0028] Figure 1 FIG. 9 is a schematic structural view of a vehicle frame of an electric drive mining dump truck according to some embodiments of the present disclosure;

[0029] Figure 2 FIG. 13 is a rear view schematic view of a vehicle frame of an electric drive mining dump truck according to some embodiments of the present disclosure;

[0030] Figure 3 FIG. 17 is a schematic view of a motor mounting bracket according to some embodiments of the present disclosure.

[0031] The reference numerals in the drawings are explained as follows:

[0032] 1 - longitudinal beam; 2 - gantry beam; 3 - motor mounting bracket; 31 - first beam; 32 - second beam; 33 - connecting part; 34 - motor interface; 4 - motor; 5 - lifting beam; 51 - first support; 6 - second support; 7 - third support; 8 - anti-collision beam.

[0033] It should be understood that the dimensions of the various parts shown in the drawings are not drawn according to actual proportional relationships. In addition, the same or similar reference numerals represent the same or similar components. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and in no way limits the present disclosure or its application or use. The present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present disclosure thorough and complete and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that: unless otherwise specifically stated, the relative arrangements of components and steps, the compositions of materials, numerical expressions and values set forth in these embodiments should be construed as merely exemplary and not as limitations.

[0035] The terms "first", "second" and similar terms used in the present disclosure do not denote any order, quantity or importance, but are merely used to distinguish different parts. Terms such as "comprising" or "including" mean that the elements before the term cover the elements listed after the term, and do not exclude the possibility of also covering other elements. Terms such as "upper", "lower", "left" and "right" are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0036] In the present disclosure, when it is described that a specific device is located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device. When it is described that a specific device is connected to other devices, the specific device may be directly connected to the other devices without an intermediate device, or may not be directly connected to the other devices and have an intermediate device.

[0037] All terms used in the present disclosure (including technical terms or scientific terms) have the same meaning as understood by those of ordinary skill in the art to which the present disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in a general dictionary such as should be construed as having a meaning consistent with their meaning in the context of the relevant art and should not be interpreted in an idealized or overly formal sense unless specifically defined as such here.

[0038] Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and devices should be regarded as part of the specification.

[0039] Figure 1 is a schematic structural view of a frame of an electric drive mining dump truck according to some embodiments of the present disclosure. Refer to Figure 1 In some embodiments, the frame of the electric drive mining dump truck includes two longitudinal beams 1, at least two motor mounts 3 and a plurality of motors 4.

[0040] The length extension direction of each longitudinal beam 1 is consistent with the first direction X, and the two longitudinal beams 1 are arranged at intervals along the second direction Y.

[0041] At least two motor mounts 3 are arranged at intervals along the first direction X, and each motor mount 3 is connected to two longitudinal beams 1.

[0042] Each motor mount 3 is provided with one motor 4 or two motors 4. Optionally, one motor 4 is provided in the motor mount 3, and the motor 4 is connected to the wheels on both sides of the motor mount 3 through a transmission structure. Or, two motors 4 are provided in the motor mount 3, and the two motors 4 are respectively connected to the wheels on both sides of the motor mount 3 in one-to-one correspondence, that is, one motor 4 is drivingly connected to the wheel on one side of the motor mount 3.

[0043] In the above embodiment, the first direction X is perpendicular to the second direction Y, the first direction X is perpendicular to the third direction Z, the second direction is perpendicular to the third direction Z, and the third direction Z is the up-down direction.

[0044] In the above embodiment, the motor mount 3 is located between the two longitudinal beams 1 and is connected to the two longitudinal beams 1. The motor mount 3 can serve as a beam of the vehicle frame, improving the structural strength of the vehicle frame and providing an installation position for the motor 4. And at least two motor mounts 3 are arranged at intervals along the first direction X, and a motor 4 is provided on each motor mount 3, which can distribute the motors 4 at different positions of the vehicle frame to optimize the weight distribution of the whole vehicle, improve the controllability and stability of the vehicle; and each motor 4 can independently control the corresponding wheel to achieve more precise torque distribution and steering control, enhancing the dynamic response ability and driving safety of the vehicle. The distributed motor arrangement provided by the present disclosure can shorten the transmission link, improve the rapidity of system response, and reduce energy loss compared with the central drive form in the related art.

[0045] Therefore, in the embodiment of the present disclosure, the motor mount 3 is integrated with the vehicle frame, which can not only realize the installation of the distributed drive motors 4 but also form the vehicle frame structure and improve the structural strength of the vehicle frame.

[0046] In the above embodiment, a space structure is formed between the two longitudinal beams 1 of the vehicle frame, which is convenient for arranging components such as a range extender, a power battery, a controller, and an actuator.

[0047] In some embodiments, the longitudinal beam 1 is configured with a rectangular cross-section and is formed by welding high-strength steel.

[0048] Reference Figure 3 , in some embodiments, the motor mount 3 includes two first beams 31 and a second beam 32.

[0049] The two first beams 31 are respectively connected to the two longitudinal beams 1 in one-to-one correspondence.

[0050] The second beam 32 connects the two first beams 31, and the second beam 32 is configured as a hollow structure, and the motor 4 is arranged in the hollow structure.

[0051] In the above embodiments, each first beam 31 is connected to a longitudinal beam 1. The first beam 31 extends downward from the longitudinal beam 1. A second beam 32 is connected between the two first beams 31, so that the motor mounting bracket 3 as a whole has a U-shaped structure.

[0052] In the above embodiments, the inside of the second beam 32 is hollow. The second beam 32 is configured as a cylindrical beam. A motor 4 is installed inside the cylindrical beam, which can not only provide space for the installation of the motor 4, but also enable the second beam 32 to be an important component of the vehicle frame structure, improving the structural strength of the vehicle frame.

[0053] In some embodiments, the vehicle frame of the electric drive mining dump truck further includes a fork arm. A connecting portion 33 is provided on the first beam 31, and the connecting portion 33 is connected to the fork arm.

[0054] In some embodiments, the fork arm includes an upper fork arm and a lower fork arm. Two connecting portions 33 are provided on the first beam 31 at an upper and lower interval. The connecting portion 33 located at the upper part is connected to the upper fork arm, and the connecting portion 33 located at the lower part is connected to the lower fork arm.

[0055] In some embodiments, a motor interface 34 is provided on the first beam 31. The motor interface 34 is used to fix the motor 4 provided inside the second beam 32. The motor 4 is drivingly connected to the corresponding wheel through a transmission shaft.

[0056] In some embodiments, the sizes of the motor interfaces 34 provided on the first beams 31 of each motor mounting bracket 3 are the same, and the sizes of the interfaces on the vehicle frame connected to the suspension are the same. Therefore, by changing the length of the longitudinal beam 1, the number and position of the motor mounting brackets 3 can be adjusted. By changing the number and distance of the second beams 32, vehicle frames for distributed electric drive mining dump trucks with three axles, four axles or five axles, etc. can be quickly derived.

[0057] In the above embodiments, the motor mounting bracket 3 as a whole is U-shaped. The two first beams 31 are integrated components, on which the motor interface 34, and the connecting portions 33 of the upper fork arm and the lower fork arm are integrally processed, improving the positioning accuracy between the drive components and the suspension components.

[0058] Reference Figure 1 and Figure 2 In some embodiments, the vehicle frame of the electric drive mining dump truck further includes at least two gantry beams 2 arranged at intervals along the first direction X. Each gantry beam 2 is connected to two longitudinal beams 1, and each gantry beam 2 is arranged corresponding to a motor mounting bracket 3 up and down.

[0059] In the above embodiments, the gantry beam 2 is located at the top of the two longitudinal beams 1, and the motor mounting bracket 3 is located at the bottom of the two longitudinal beams 1. The gantry beam 2 and the motor mounting bracket 3 are arranged corresponding to each other up and down. A closed annular structure is formed between the U-shaped motor mounting bracket 3 and the gantry beam 2, which has excellent load-bearing capacity, and components such as a range extender, a power battery, a controller, and an actuator can also be arranged inside the annular structure.

[0060] In the above embodiments, the gantry beam 2 and the motor mounting bracket 3 arranged corresponding to each other up and down form an annular assembly. A plurality of annular assemblies are arranged at intervals along the length extension direction of the longitudinal beam 1. A relatively large available installation space is formed between adjacent two annular assemblies in combination with the two longitudinal beams 1 on both sides, which is convenient for arranging components such as a range extender, a power battery, a controller, and an actuator.

[0061] In some embodiments, the frame of the electric drive mining dump truck includes a plurality of wheels, and the motor 4 arranged on each motor mounting bracket 3 is drivingly connected to the wheels on the corresponding side.

[0062] In the above embodiments, wheels are arranged on both sides of the motor mounting bracket 3 in the second direction Y. Two motors 4 are arranged on the motor mounting bracket 3. One of the motors 4 is correspondingly drivingly connected to the wheels on one side of the motor mounting bracket 3, and the other motor 4 is correspondingly drivingly connected to the wheels on the other side of the motor mounting bracket 3.

[0063] In the above embodiments, the two longitudinal beams 1 run through the front and rear of the dump truck. Corresponding to the position of any axle (the second beam 32 and the motor 4 therein), the gantry beam 2 is arranged on the upper part of the longitudinal beam 1. The gantry beam 2 connects the two longitudinal beams 1. The motor mounting bracket 3 is arranged on the lower part of the longitudinal beam 1. The motor mounting bracket 3 connects the two longitudinal beams 1. The frame structure at each axle position is modularly designed. When the vehicle model is developed in a series, by changing the length of the longitudinal beam 1 and adjusting the number and position of the gantry beam 2 and the motor mounting bracket 3, it is possible to quickly derive frames of distributed electric drive dump trucks with different numbers of drive axles such as two-axle vehicles, three-axle vehicles, four-axle vehicles, and five-axle vehicles.

[0064] Reference Figure 1 , in some embodiments, the frame of the electric drive mining dump truck further includes a lifting beam 5 and a lifting oil cylinder.

[0065] The lifting beam 5 is arranged between two adjacent motor mounting brackets 3 at the foremost part of the electric drive mining dump truck, and a first support 51 is arranged on the lifting beam 5.

[0066] The first end of the lifting oil cylinder is rotatably connected to the first support 51, and the second end of the lifting oil cylinder is configured to be rotatably connected to the cargo box.

[0067] In the above embodiments, a lifting beam 5 is provided between the first axle and the second axle at the bottom of the vehicle frame. First supports 51 are provided at both ends of the lifting beam 5. The first supports 51 are the lower supports of the lifting cylinders and are rotatably connected to the lower ends of the lifting cylinders. The upper ends of the lifting cylinders are rotatably connected to the cargo box.

[0068] The cargo box is the cargo box of an electric drive mining dump truck. The cargo box is arranged on the vehicle frame and can be flipped relative to the vehicle frame under the drive of the lifting cylinder.

[0069] In some embodiments, the vehicle frame of the electric drive mining dump truck further includes a second support 6 and at least two gantry beams 2 spaced apart along the first direction X. Each gantry beam 2 connects two longitudinal beams 1. The second support 6 is arranged on the gantry beam 2 at the rearmost part of the electric drive mining dump truck. The second support 6 is configured to be rotatably connected to the cargo box.

[0070] In the above embodiments, a second support 6 is arranged on the gantry beam 2 at the rearmost end of the vehicle frame. The second support 6 is the cargo box flipping support. The cargo box flipping support is rotatably connected to the cargo box through a hinge shaft. By pushing the cargo box with the lifting cylinder, the cargo box can be rotated around the hinge shaft on the second support 6.

[0071] In some embodiments, the vehicle frame of the electric drive mining dump truck further includes a third support 7, a fork arm and a suspension cylinder.

[0072] The third support 7 is arranged on the gantry beam 2.

[0073] The fork arm is arranged on the motor mounting bracket 3.

[0074] The suspension cylinders are respectively rotatably connected to the third support 7 and the fork arm.

[0075] In the above embodiments, during the process that the cargo box is pushed by the lifting cylinder and flipped around the hinge shaft on the second support 6, the force on the fulcrum area of the second support 6 can be directly transmitted to the suspension cylinder through the gantry beam 2, and then transmitted to the wheels through the upper and lower fork arms, avoiding the pressure on the second support 6 directly acting on the longitudinal beam 1 of the vehicle frame.

[0076] In some embodiments, the vehicle frame of the electric drive mining dump truck further includes a range extender, a power battery, a controller, an actuator, etc. The range extender, the power battery, the controller, the actuator, etc. are arranged in the spaces formed between two longitudinal beams 1, adjacent two motor mounting brackets 3 and adjacent two gantry beams 2, and in the space formed between the gantry beam 2 and the motor mounting bracket 3.

[0077] In the above embodiments, a middle cavity is formed between the left and right longitudinal beams 1 of the vehicle frame and between the gantry beam 2 and the motor mounting bracket 3 in the height direction, for installing components such as a range extender, a power battery, a controller, an actuator, etc., providing sufficient space for the installation of electric drive devices, etc.

[0078] In some embodiments, the frame of the electric drive mining dump truck further includes a collision beam 8. The collision beam 8 is disposed at the ends of the two longitudinal beams 1 and connects the two longitudinal beams 1. The collision beam 8 includes a front collision beam and a rear collision beam. The front collision beam is disposed at the front ends of the two longitudinal beams 1. The rear collision beam is disposed at the rear ends of the two longitudinal beams 1.

[0079] In the above embodiments, a front collision beam is provided at the lower part of the front end of the frame, and a rear collision beam is provided near the lower end on the side of the rear gantry beam away from the front gantry beam, which is convenient for realizing the impact protection of the vehicle.

[0080] Reference Figures 1 to 3 , some specific embodiments of the frame of the electric drive mining dump truck are described below.

[0081] The frame of the electric drive mining dump truck includes two longitudinal beams 1, which are arranged at intervals in the second direction Y. The length extension direction of each longitudinal beam 1 is consistent with the first direction X. A plurality of gantry beams 2 are arranged at intervals along the first direction X on the tops of the two longitudinal beams 1. Each gantry beam 2 is respectively connected to the tops of the two longitudinal beams 1 and straddles above the two longitudinal beams 1. A plurality of motor mounting brackets 3 are arranged at intervals along the first direction X at the bottoms of the two longitudinal beams 1. Each motor mounting bracket 3 is respectively connected to the bottoms of the two longitudinal beams 1 and straddles below the two longitudinal beams 1. A motor mounting bracket 3 is correspondingly arranged below each gantry beam 2. The motor mounting bracket 3 includes two first beams 31 and a second beam 32. Each first beam 31 is connected to a longitudinal beam 1 and extends downward from the longitudinal beam 1. The second beam 32 connects the two first beams 31, and the whole motor mounting bracket 3 forms a U-shaped structure. The inside of the second beam 32 is hollow and is a tubular beam. A motor 4 is arranged in the hollow structure of the second beam 32. A motor interface 34 is provided on the first beam 31. The motor 4 in the second beam 32 is fixedly connected to the motor interface 34, and the motor 4 is drivingly connected to the corresponding wheel through a transmission shaft. A connecting portion 33 for connecting with the upper fork arm and the lower fork arm is also provided on the first beam 31. The two connecting portions 33 are located above and below the motor interface 34. Two motors 4 are arranged in the second beam 32 of each motor mounting bracket 3, and each motor 4 correspondingly connects to the wheel on one side of the motor mounting bracket 3. A lifting beam 5 is arranged between the motor mounting brackets 3 corresponding to the first axle and the second axle of the dump truck counted from the front to the back. The lifting beam 5 connects the two longitudinal beams 1 and extends downward from the longitudinal beams 1. First supports 51 are provided at both ends of the lifting beam 5 in the second direction Y. The first supports 51 are hinged to the lower ends of the lifting cylinders, and the upper ends of the lifting cylinders are hinged to the cargo box. Lifting cylinders are respectively arranged on both sides of the cargo box in the second direction Y. A second support 6 is arranged on the gantry beam 2 at the rearmost part of the frame. The second support 6 is arranged at the rear part of the gantry beam 2 in the first direction X. The second support 6 is rotatably connected to the cargo box through a hinge shaft. During the process of the lifting cylinder pushing the cargo box, the cargo box rotates relative to the frame around the hinge shaft on the second support 6. Third supports 7 are respectively arranged on both sides of each gantry beam 2 in the second direction Y. The third supports 7 are rotatably connected to the suspension cylinders, and the suspension cylinders are also rotatably connected to the upper fork arms.

[0082] Some embodiments of the present disclosure also provide an electric drive mining dump truck, which includes the frame of the electric drive mining dump truck in any of the above embodiments.

[0083] In some embodiments, the electric drive mining dump truck further includes a cargo box. The cargo box is arranged on the frame. The front part of the cargo box is hinged to the lifting cylinder, and the rear part of the cargo box is hinged to the second support 6. The lifting cylinder provides a lifting force to push the cargo box so that the cargo box rotates relative to the frame.

[0084] Based on the above embodiments of the present disclosure, in the absence of an express negation or conflict, the technical features of one embodiment can be beneficially combined with one or more other embodiments.

[0085] Although some specific embodiments of the present disclosure have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and not for limiting the scope of the present disclosure. Those skilled in the art should understand that the above embodiments can be modified or partial technical features can be equivalently replaced without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A frame of an electric-driven mining dump truck, characterized in that: include: Two longitudinal beams (1), the length extension direction of each longitudinal beam (1) being consistent with the first direction (X), and the two longitudinal beams (1) being arranged at intervals along the second direction (Y); at least two motor mounting frames (3) arranged at intervals along the first direction (X), and each of the motor mounting frames (3) is connected to the two longitudinal beams (1); and A plurality of motors (4), each of the motor mounting frames (3) being provided with one or two motors (4).

2. The frame of the electric-driven mining dump truck according to claim 1, characterized in that: The motor mounting frame (3) comprises: two first beams (31) connected to the two longitudinal beams (1) in a one-to-one correspondence; and The second beam (32) connects the two first beams (31); the second beam (32) is constructed as a hollow structure, and the motor (4) is arranged in the hollow structure.

3. The frame of the electric-driven mining dump truck according to claim 2, characterized in that: It also comprises a fork arm, and a connecting portion (33) is provided on the first beam (31), and the connecting portion (33) is connected to the fork arm.

4. The frame of the electric-driven mining dump truck according to claim 1, characterized in that: It also comprises at least two gantry beams (2) arranged at intervals along the first direction (X), each of the gantry beams (2) connecting the two longitudinal beams (1), and each of the gantry beams (2) being arranged in correspondence with a motor mounting frame (3) up and down.

5. The frame of the electric-driven mining dump truck according to claim 1, characterized in that: It comprises a plurality of wheels, wherein the motor (4) arranged on each motor mounting frame (3) drives and connects to the wheel on the corresponding side.

6. The frame of the electric-driven mining dump truck according to claim 5, characterized in that: Also includes: A lifting beam (5) is arranged between two adjacent motor mounting frames (3) at the front of the electric-driven mining dump truck, and a first support (51) is provided on the lifting beam (5); and A lifting cylinder, a first end of which is rotatably connected to the first support (51), and a second end of which is configured to be rotatably connected to the cargo box.

7. The frame of the electric-driven mining dump truck according to claim 6, characterized in that: The invention also comprises a second support (6) and at least two gantry beams (2) arranged at intervals along the first direction (X), each of the gantry beams (2) being connected to the two longitudinal beams (1), the second support (6) being arranged on the gantry beam (2) at the rearmost of the electric-driven mining dump truck, and the second support (6) being configured to be rotatably connected to the cargo box.

8. The frame of the electric-driven mining dump truck according to claim 7, characterized in that: Also includes: A third support (7) is provided on the gantry beam (2); A fork arm, arranged on the motor mounting frame (3); as well as The suspension oil cylinder is rotatably connected to the third support (7) and the fork arm respectively.

9. The frame of the electric-driven mining dump truck according to claim 4, characterized in that: It also includes a range extender, a power battery, a controller and an actuator, wherein the range extender, the power battery, the controller and the actuator are arranged in a space formed between the two longitudinal beams (1), two adjacent motor mounting frames (3) and two adjacent gantry beams (2), and in a space formed between the gantry beam (2) and the motor mounting frame (3).

10. An electrically driven mining dump truck, characterized in that: A vehicle frame comprising an electric-driven mining dump truck according to any one of claims 1 to 9.

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