Frame system of unmanned pure electric mining dump truck

Abstract

The utility model provides an unmanned pure electric mining dump truck frame system which comprises a front gantry beam, a rear gantry beam and at least two longitudinal beams, and the two ends of any longitudinal beam are fixedly connected with any side of the front gantry beam and any side of the rear gantry beam into a whole respectively. The two ends of the other longitudinal beam are fixedly connected with the other side of the front gantry beam and the other side of the rear gantry beam into a whole. Lifting oil cylinder installation supports are arranged at the two ends of the upper side of the front gantry beam, one end of each lifting oil cylinder is hinged to the container, and a cylinder barrel is hinged to the corresponding lifting oil cylinder installation support. Container overturning supports are arranged at the two ends of the upper side of the rear gantry beam and hinged to the ends, away from the lifting oil cylinder installation supports, of the containers. The hydraulic lifting system has the advantages that a traditional mine car bottom frame structure is changed, the hydraulic lifting system originally arranged in the middle of the frame is transferred to the front end of the frame, meanwhile, the longitudinal beams originally longitudinally arranged in the middle of the frame are arranged on the two sides of the gantry beams at the two ends, and a dead zone is constructed in the middle of the frame and used for arranging more battery packs to provide electric energy for the whole car.

Description

Technical Field

[0001] The utility model relates to a frame system of an unmanned pure electric mining dump truck, belonging to the technical field of engineering machinery. Background Art

[0002] At present, some large rigid dump trucks have been upgraded and transformed into pure electric or hybrid dump trucks. Their frames are all box-type variable-section structures, with independent suspension installed on both sides of the front gantry beam, a central lifting and torsion-resistant tube running through the two longitudinal beams, the rear axle is hingedly connected to the lifting and torsion-resistant tube, and a lifting and flipping and rear suspension installation layout is set at the rear; only the engine compartment area is the installation location for the battery pack and the electric motor; for hybrid vehicles, because they retain the original power system and the limitations of the frame structure layout, the battery configuration capacity is greatly restricted.

[0003] The existing dump truck lifting system is set in the middle position of the frame, so the longitudinal length of this position is too long. The middle position of the frame is where hydraulic components such as hydraulic oil pumps and some valves are installed. It is also the area with the most concentrated and largest number of hydraulic system components. The fuel tank, hydraulic oil tank and some pipelines are arranged on the outside of the frame longitudinal beam, and the arrangement of frame accessories is complicated.

[0004] The area from the gantry beam to the front end of the frame is the platform area. The cab, electric control cabinet, resistor grid and some battery packs are arranged on the entire platform. The entire platform layout is very compact. The traditional frame cannot meet the battery pack installation requirements of pure electric mining dump trucks. The space available for the frame is limited, which is extremely unfavorable to the development of new energy mining trucks. Therefore, a new frame system is urgently needed to provide more sufficient installation space for new energy mining dump trucks, as well as a more stable and safe way to install accessories. Summary of the invention

[0005] Purpose of the invention: In view of the deficiencies in the prior art, the utility model provides a frame system for an unmanned pure electric mining dump truck. Through the design of the frame structure, the lifting hydraulic system originally arranged in the middle of the frame is adjusted to the front end of the frame, the middle of the frame is set as the battery pack installation area, and the frame structure is used to provide an installation basis for other necessary structural parts, which makes the limited space of the frame to the greatest extent, makes the vehicle working process more stable, and significantly improves the energy carrying capacity that can be provided.

[0006] Technical solution: A frame system of an unmanned pure electric mining dump truck, comprising a front gantry beam, a rear gantry beam and at least two longitudinal beams, wherein two ends of any longitudinal beam are respectively fixedly connected to any one side of the front gantry beam and the rear gantry beam as a whole, and two ends of another longitudinal beam are respectively fixedly connected to the other side of the front gantry beam and the rear gantry beam as a whole;

[0007] The two ends of the upper side of the front gantry beam are provided with lifting cylinder mounting supports, one end of the lifting cylinder is hinged to the cargo box, and the cylinder barrel is hinged to the lifting cylinder mounting support;

[0008] The two ends of the upper side of the rear gantry beam are provided with cargo box flipping supports, and the cargo box flipping supports are hinged to one end of the cargo box away from the lifting cylinder mounting support.

[0009] The utility model changes the bottom frame structure of the traditional mining car, transfers the hydraulic lifting system originally set in the middle of the frame to the front end of the frame, and at the same time sets the longitudinal beam originally set in the middle of the frame to the two sides of the gantry beam at both ends, and constructs an empty area in the middle of the frame for setting the battery pack to provide power for the whole vehicle;

[0010] The position of the hydraulic lifting system combined with the hinged position of the cargo box and the frame enables the lifting of the cargo box, and the lifting is performed synchronously through two hydraulic lifting cylinders, which is more efficient and faster.

[0011] In order to protect the vehicle and provide a safe installation space for the power pump assembly, a front anti-collision beam is provided near the lower end of the front gantry beam away from the rear gantry beam, and a front anti-collision beam is provided near the lower end of the rear gantry beam away from the front gantry beam;

[0012] The front anti-collision beam is fixedly connected to the two ends of the front gantry beam through the front supporting longitudinal beam, and the rear anti-collision beam is fixedly connected to the two ends of the rear gantry beam through the rear supporting longitudinal beam;

[0013] A power pump assembly is arranged between the front supporting longitudinal beams.

[0014] By setting up an anti-collision beam, necessary and effective protection can be provided for vehicle equipment in complex environments, reducing the possibility of equipment damage due to the external environment, and improving equipment utilization efficiency and working stability; at the same time, the power pump assembly is set in the space between the anti-collision beam and the front gantry beam, which effectively utilizes the space outside the vehicle and is within the safety protection range of the anti-collision beam, effectively ensuring a safe working environment for the equipment.

[0015] In order to set up the hydraulic oil tank without occupying the battery pack installation space, the front gantry beam and the rear gantry beam have the same structure as a frame structure. The width of the upper end of the side of the front gantry beam is smaller than the width of the lower end. The middle area of ​​the front gantry beam forms a hydraulic oil tank installation area for installing the hydraulic oil tank.

[0016] Through the structural design of the front and rear gantry beams, the middle position is set as the oil tank installation area, and the hydraulic oil tank is arranged near the power pump assembly, which effectively simplifies the laying and installation of the oil circuit and valve group, making the frame appearance more beautiful and neat, and at the same time reduces the hidden dangers of pipeline damage caused by laying lines or pipelines that are too long, which may affect the normal operation of the equipment.

[0017] In order to reduce the impact of the road environment and improve the stability of the cargo box, the front gantry beam and the rear gantry beam are hinged on both sides with upper fork arms and lower fork arms, the upper fork arm of the front gantry beam is hinged at the middle part of the front gantry beam, and the lower fork arm of the front gantry beam is hinged at the lower end of the front gantry beam; the upper fork arm of the rear gantry beam is hinged at the middle part of the rear gantry beam, and the lower fork arm of the rear gantry beam is hinged at the lower end of the rear gantry beam; the upper ends of both sides of the front gantry beam and the rear gantry beam are provided with suspension mounting seats, and a suspension cylinder is provided between the suspension mounting seat and the upper fork arm, with its two ends respectively hinged to the suspension mounting seat and the upper fork arm.

[0018] It is connected to the tire structure of the vehicle through the upper and lower fork arms, and is provided with a suspension cylinder connected to the frame. During mining driving, the road conditions are bad and the tires vibrate severely during driving. The suspension cylinder can effectively offset the vibration caused by the up and down movement of the tires or minimize the impact of the vibration on the stability of the cargo box, thereby ensuring the stability of materials during transportation and avoiding safety hazards caused by the scattering of materials due to poor road conditions.

[0019] In order to facilitate the installation of the steering cylinder support, a mounting crossbeam is provided at the middle of the lower end of the front gantry beam away from the rear gantry beam and the rear gantry beam away from the front gantry beam, and the mounting crossbeam is used to install the steering cylinder support.

[0020] Connecting the steering cylinder support to the lower end of the front and rear gantry beams through a separate mounting crossbeam simplifies the installation process and avoids multiple processing of the front and rear gantry beams, which affects the structural strength of the front and rear gantry beams. Multiple steering cylinder supports can be fixed on the mounting crossbeam through advance processing and then installed at the lower end of the front and rear gantry beams, which is more convenient to install.

[0021] In order to make the frame force more stable and concentrated on the front and rear gantry beams with high structural strength, the upper ends of the front and rear gantry beams extend outward, the lifting cylinder mounting support is arranged above the suspension cylinder of the front gantry beam, and the cargo box flipping support is arranged above the suspension cylinder of the rear gantry beam.

[0022] The lifting cylinder and the hinge points between the cargo box and the frame are all arranged above the suspension cylinder, and the pressure of the cargo box on the frame is evenly distributed near the suspension cylinder. This can better concentrate the pressure of the cargo box on the front and rear gantry beams with higher structural strength. Combined with the buffering effect of the suspension cylinder, the vehicle can be more stable and safe when transporting materials.

[0023] In order to reduce the weight of the frame, reduce the deadweight and improve energy efficiency, the longitudinal beam includes an upper longitudinal beam and a lower longitudinal beam, the upper longitudinal beam includes two upper longitudinal beam monomers whose two ends are respectively connected to the upper ends of the front gantry beam and the rear gantry beam, and the lower longitudinal beam includes two lower longitudinal beam monomers whose two ends are respectively connected to the lower ends of the front gantry beam and the rear gantry beam.

[0024] Since the front and rear gantry beam structures have high structural strength, setting too many longitudinal beam structures will only make the structure excessively strong, occupy space and increase the vehicle's own weight. By setting four longitudinal beam units corresponding to the front and rear gantry beam structures, the structural strength is effectively guaranteed while reducing the vehicle's own weight and saving a lot of frame space for installing battery packs.

[0025] In order to adapt to the height of the cargo box, the lifting cylinder mounting bracket is hinged to the middle part of the cylinder body of the lifting cylinder.

[0026] Since the height of the mine car cargo box is higher than that of ordinary vehicles, under the premise of being as close to the hinge point of the cargo box as possible, in order to adapt to the height of the mine car cargo box, the lifting cylinder mounting bracket is hinged to the middle part of the cylinder body of the lifting cylinder. This not only ensures the lifting stability, but also avoids the increase in the demand for hydraulic oil due to the excessively long cylinder stroke.

[0027] Beneficial effects: The utility model changes the bottom frame structure of the traditional mining car, transfers the hydraulic lifting system originally set in the middle of the frame to the front end of the frame, and sets the longitudinal beam originally set in the middle of the frame to the two sides of the gantry beam at both ends, and constructs an empty area in the middle of the frame for setting more battery packs to provide power for the whole vehicle;

[0028] When the cargo box is lifted, the force points in the lifting fulcrum and the tipping fulcrum are directly transmitted to the suspension cylinder through the front and rear gantry beams, and then transmitted to the wheels through the upper and lower fork arms, thus avoiding the lifting force and the pressure of the cargo box tipping support acting directly on the frame longitudinal beams;

[0029] The hydraulic oil tank is arranged on the inner side of the front gantry beam, which also serves to isolate the power pump assembly and the battery pack, thereby avoiding contamination of the battery pack and the resulting fire hazard when oil splashes due to a hydraulic system failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0031] Figure 1 This is a structural diagram of the assembly of the frame system of the utility model and some vehicle structural parts.

[0032] Figure 2 This is the overall structural diagram of the frame of the utility model. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0035] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0036] like Figure 1 and 2 As shown, a frame system of an unmanned pure electric mining dump truck includes a front gantry beam 1, a rear gantry beam 2 and at least two longitudinal beams, two ends of any one of the longitudinal beams are respectively fixedly connected to any one side of the front gantry beam 1 and the rear gantry beam 2 as a whole, and two ends of another longitudinal beam are respectively fixedly connected to the other side of the front gantry beam 1 and the rear gantry beam 2 as a whole;

[0037] The two ends of the upper side of the front gantry beam 1 are provided with lifting cylinder mounting brackets 3, one end of the lifting cylinder 4 is hinged to the cargo box, and the cylinder barrel is hinged to the lifting cylinder mounting bracket 3;

[0038] The two ends of the upper side of the rear gantry beam 2 are provided with cargo box turning supports 5, and the cargo box turning supports 5 are hinged to one end of the cargo box away from the lifting cylinder mounting support 3.

[0039] The utility model changes the bottom frame structure of the traditional mining car, transfers the hydraulic lifting system originally set in the middle of the frame to the front end of the frame, and at the same time sets the longitudinal beam originally set in the middle of the frame to the two sides of the gantry beam at both ends, and constructs an empty area in the middle of the frame for setting the battery pack to provide power for the whole vehicle;

[0040] The position of the hydraulic lifting system is combined with the hinged position of the cargo box and the frame to realize the lifting of the cargo box, and the two hydraulic lifting cylinders 4 are used to perform synchronous lifting, which is more efficient and faster.

[0041] A front anti-collision beam 6 is provided near the lower end of the front gantry beam 1 away from the rear gantry beam 2, and a rear anti-collision beam 7 is provided near the lower end of the rear gantry beam 2 away from the front gantry beam 1;

[0042] The front anti-collision beam 6 is fixedly connected to both ends of the front gantry beam 1 through the front supporting longitudinal beam 8, and the rear anti-collision beam 7 is fixedly connected to both ends of the rear gantry beam 2 through the rear supporting longitudinal beam 9;

[0043] A power pump assembly 10 is arranged between the front supporting longitudinal beams 8 .

[0044] By setting up an anti-collision beam, necessary and effective protection can be provided for vehicle equipment in complex environments, the possibility of equipment being damaged by the external environment can be reduced, and the equipment utilization efficiency and working stability can be improved; at the same time, the power pump assembly 10 is set in the space between the anti-collision beam and the front gantry beam 1, which effectively utilizes the space outside the vehicle, and within the safety protection range of the anti-collision beam, effectively ensures a safe working environment for the equipment.

[0045] The front gantry beam 1 and the rear gantry beam 2 have the same structure and are both frame-type structures. The width of the upper end of the side of the front gantry beam 1 is smaller than the width of the lower end. The middle area of ​​the front gantry beam 1 forms a hydraulic oil tank installation area 11 for installing a hydraulic oil tank 12.

[0046] Through the structural design of the rear gantry beam, the middle position is set as the oil tank installation area, and the hydraulic oil tank 12 is set near the power pump assembly 10, which effectively simplifies the laying and installation of the oil circuit and the valve group, making the frame appearance more beautiful and neat, and at the same time reduces the hidden dangers of pipeline damage caused by laying lines or pipelines that are too long, which affects the normal operation of the equipment.

[0047] The front gantry beam 1 and the rear gantry beam 2 are both hingedly provided with an upper fork arm 13 and a lower fork arm 14 on both sides. The upper fork arm 13 of the front gantry beam 1 is hinged at the middle position of the front gantry beam 1, and the lower fork arm 14 of the front gantry beam 1 is hinged at the lower end of the front gantry beam 1; the upper fork arm 13 of the rear gantry beam 2 is hinged at the middle position of the rear gantry beam 2, and the lower fork arm 14 of the rear gantry beam 2 is hinged at the lower end of the rear gantry beam 2; the upper ends of both sides of the front gantry beam 1 and the rear gantry beam 2 are both provided with a suspension mounting seat 15, and a suspension cylinder 16 is provided between the suspension mounting seat 15 and the upper fork arm 13, and its two ends are respectively hinged to the suspension mounting seat 15 and the upper fork arm 13.

[0048] It is connected to the tire structure of the vehicle through the upper and lower forks, and is provided with a suspension cylinder 16 connected to the frame. During the mine driving, the road conditions are bad and the tires vibrate severely during driving. The suspension cylinder 16 can effectively offset the vibration caused by the up and down movement of the tires or minimize the impact of the vibration on the stability of the cargo box, thereby ensuring the stability of materials during transportation and avoiding safety hazards caused by the scattering of materials due to poor road conditions.

[0049] A mounting crossbeam 17 is provided at the side of the front gantry beam 1 away from the rear gantry beam 2 and at the lower middle part of the side of the rear gantry beam 2 away from the front gantry beam 1 . The mounting crossbeam 17 is used to install a steering cylinder support.

[0050] Connecting the steering cylinder support to the lower end of the rear gantry beam through a separate mounting crossbeam 17 simplifies the installation process and avoids multiple processing of the rear gantry beam, which affects the structural strength of the rear gantry beam. Multiple steering cylinder supports can be fixedly set on the mounting crossbeam 17 through advance processing and then installed at the lower end of the rear gantry beam, which is more convenient to install.

[0051] Both ends of the upper sides of the front gantry beam 1 and the rear gantry beam 2 extend outward, the lifting cylinder mounting support 3 is arranged above the suspension cylinder 16 of the front gantry beam 1, and the cargo box flipping support 5 is arranged above the suspension cylinder 16 of the rear gantry beam 2.

[0052] The lifting cylinder 4 and the hinge point between the cargo box and the frame are all arranged above the suspension cylinder, and the pressure of the cargo box on the frame is evenly distributed near the suspension cylinder 16. This can better concentrate the pressure of the cargo box on the rear gantry beam with higher structural strength. Combined with the buffering effect of the suspension cylinder 16, the vehicle can travel more stably and safely during the process of transporting materials.

[0053] The longitudinal beam includes an upper longitudinal beam 18 and a lower longitudinal beam 19. The upper longitudinal beam 18 includes two upper longitudinal beam monomers whose two ends are respectively connected to the upper ends of the front gantry beam 1 and the rear gantry beam 2. The lower longitudinal beam 19 includes two lower longitudinal beam monomers whose two ends are respectively connected to the lower ends of the front gantry beam 1 and the rear gantry beam 2.

[0054] Since the rear gantry beam structure has a high strength, setting too many longitudinal beam structures will only make the structure excessively strong, occupy space and increase the vehicle's own weight. By setting four longitudinal beam units corresponding to the rear gantry beam structure, the structural strength is effectively guaranteed while reducing the vehicle's own weight and saving a lot of frame space for installing battery packs.

[0055] The lifting cylinder mounting support 3 is hinged to the middle part of the cylinder body of the lifting cylinder 4 .

[0056] Since the height of the cargo box of a mine car is higher than that of an ordinary vehicle, on the premise of being as close as possible to the hinge point of the cargo box, in order to adapt to the height of the cargo box of the mine car, the lifting cylinder mounting bracket 3 is hinged with the middle part of the cylinder body of the lifting cylinder 4, which not only ensures the lifting stability, but also avoids the increase in the demand for hydraulic oil due to the excessively long cylinder stroke.

[0057] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0058] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A frame system of an unmanned pure electric mining dump truck, characterized in that: It comprises a front gantry beam (1), a rear gantry beam (2) and at least two longitudinal beams, wherein two ends of any one of the longitudinal beams are respectively fixedly connected to any one side of the front gantry beam (1) and the rear gantry beam (2) as a whole, and two ends of another longitudinal beam are respectively fixedly connected to the other side of the front gantry beam (1) and the rear gantry beam (2) as a whole; Both ends of the upper side of the front gantry beam (1) are provided with lifting cylinder mounting supports (3); one end of the lifting cylinder (4) is hinged to the cargo box, and the cylinder barrel is hinged to the lifting cylinder mounting support (3); Both ends of the upper side of the rear gantry beam (2) are provided with cargo box flip supports (5), and the cargo box flip supports (5) are hinged to one end of the cargo box away from the lifting cylinder mounting support (3).

2. The frame system of the unmanned pure electric mining dump truck according to claim 1 is characterized in that: A front anti-collision beam (6) is provided near the lower end of the front gantry beam (1) on a side away from the rear gantry beam (2), and a rear anti-collision beam (7) is provided near the lower end of the rear gantry beam (2) on a side away from the front gantry beam (1); The front anti-collision beam (6) is fixedly connected to the two ends of the front gantry beam (1) via the front supporting longitudinal beam (8), and the rear anti-collision beam (7) is fixedly connected to the two ends of the rear gantry beam (2) via the rear supporting longitudinal beam (9); A power pump assembly (10) is arranged between the front supporting longitudinal beams (8).

3. The frame system of the unmanned pure electric mining dump truck according to claim 2 is characterized in that: The front gantry beam (1) and the rear gantry beam (2) have the same structure and are both frame-type structures. The width of the upper end of the side surface of the front gantry beam (1) is smaller than the width of the lower end. The middle area of ​​the front gantry beam (1) forms a hydraulic oil tank installation area (11) for installing a hydraulic oil tank (12).

4. The frame system of the unmanned pure electric mining dump truck according to claim 1 is characterized in that: An upper fork arm (13) and a lower fork arm (14) are hingedly provided on both sides of the front gantry beam (1) and the rear gantry beam (2); The upper fork arm (13) of the front gantry beam (1) is hinged at the middle of the front gantry beam (1), and the lower fork arm (14) of the front gantry beam (1) is hinged at the lower end of the front gantry beam (1); the upper fork arm (13) of the rear gantry beam (2) is hinged at the middle of the rear gantry beam (2), and the lower fork arm (14) of the rear gantry beam (2) is hinged at the lower end of the rear gantry beam (2); A suspension mounting seat (15) is provided at the upper ends of both sides of the front gantry beam (1) and the rear gantry beam (2), and a suspension cylinder (16) is provided between the suspension mounting seat (15) and the upper fork arm (13), with two ends respectively hinged to the suspension mounting seat (15) and the upper fork arm (13).

5. The frame system of the unmanned pure electric mining dump truck according to claim 1 is characterized in that: A mounting crossbeam (17) is provided at the middle of the lower end of the front gantry beam (1) on the side away from the rear gantry beam (2) and at the side away from the front gantry beam (1) on the rear gantry beam (2). The mounting crossbeam (17) is used to mount a steering cylinder support.

6. The frame system of the unmanned pure electric mining dump truck according to claim 4 is characterized in that: Both ends of the upper sides of the front gantry beam (1) and the rear gantry beam (2) extend outwards, the lifting cylinder mounting support (3) is arranged above the suspension cylinder (16) of the front gantry beam (1), and the cargo box flip support (5) is arranged above the suspension cylinder (16) of the rear gantry beam (2).

7. The frame system of the unmanned pure electric mining dump truck according to claim 1 is characterized in that: The longitudinal beam comprises an upper longitudinal beam (18) and a lower longitudinal beam (19), wherein the upper longitudinal beam (18) comprises two upper longitudinal beam monomers whose two ends are respectively connected to the upper ends of the front gantry beam (1) and the rear gantry beam (2), and the lower longitudinal beam (19) comprises two lower longitudinal beam monomers whose two ends are respectively connected to the lower ends of the front gantry beam (1) and the rear gantry beam (2).

8. The frame system of the unmanned pure electric mining dump truck according to claim 1 is characterized in that: The lifting cylinder mounting support (3) is hinged to the middle part of the cylinder body of the lifting cylinder (4).

Images