Auxiliary beam structure of mine vehicle
By adopting a frame design of longitudinal and transverse beams in the sub-beam structure of mining vehicles, combined with structures such as flip-over axle sleeves and cross beams, the problem of unstable connection of traditional sub-beams has been solved, achieving higher load-bearing capacity and deformation resistance, and improving vehicle safety and assembly efficiency.
Patent Information
- Application Number
- CN202520059816.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-10
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-01-10
AI Technical Summary
Traditional mining vehicle subframe structures are unstable and prone to loosening under complex working conditions, making them unable to effectively cope with bumps and impacts. Furthermore, they lack sufficient protection, leading to increased deformation, corrosion, and safety hazards in the frame structure.
The frame structure with longitudinal beams flush with the side beams of the chassis, combined with multiple crossbeams and positioning connection plates, enhances the load-bearing capacity and resistance to deformation. The design of rotating shaft mounting bushings, cross beams and reinforcing ribs improves connection reliability and protection, disperses stress, and prevents deformation and corrosion.
This improved the stability and deformation resistance of the sub-beam, enhanced vehicle safety and assembly efficiency, and ensured the normal operation and safety of the vehicle in harsh environments.
Smart Images
Figure CN223821788U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of mine machinery processing, and concretely relates to a mine vehicle auxiliary beam structure. BACKGROUND
[0002] In the running process of the mine vehicle, the frame as a key load-bearing component is directly related to the safety and stability of the vehicle. The traditional mine vehicle frame has exposed many problems when facing complex working conditions, especially in the aspect of the auxiliary beam structure.
[0003] The mine vehicle travels on the rugged road of the mine and will frequently encounter violent jolts and impacts, which is a great test of the structural strength of each part of the frame. The connection mode of the existing auxiliary beam and the main structure of the frame is often not stable enough. Like the common bolt connection mode, the bolt is prone to loosening under long-term high-frequency vibration, resulting in gaps in the connection part of the auxiliary beam and the frame, and further causing local stress concentration. This not only reduces the effect of the auxiliary beam on improving the overall strength of the frame, but also may cause the deformation of the frame structure, affecting the normal operation of the vehicle. In addition, the mine vehicle needs to carry a large amount of goods, and the uneven distribution of goods often occurs during transportation. Under this condition, the existing auxiliary beam structure is difficult to effectively optimize the carrying capacity of the frame. Since the design of the auxiliary beam cannot accurately match different goods weights and distribution modes, the frame cannot disperse stress reasonably through the auxiliary beam when bearing non-uniform load, so that some parts of the frame bear excessive pressure, shortening the service life of the frame.
[0004] At present, the mine vehicle operates in a harsh environment, and dust, soil and water impurities are easy to erode the frame structure. The existing auxiliary beam structure has deficiencies in protection, for example, the connection gap between the auxiliary beam and the frame is easy to accumulate impurities, and the long-term accumulation of these impurities will accelerate the corrosion of metal parts, especially in the mine environment with high humidity, the corrosion problem is more serious. Corrosion not only weakens the strength of the auxiliary beam itself, but also damages the connection reliability between the auxiliary beam and the frame, increasing the safety hazards of the vehicle. It is particularly worth noting that the rear and front parts of the auxiliary beam bear huge pressure and impact force during the unloading or use of the vehicle. When the vehicle is unloaded by tilting the hopper, the gravity of the material and the inertial force generated by the dumping will act on the rear part of the auxiliary beam, which requires the front part of the auxiliary beam to have extremely high strength to prevent deformation, fracture and other conditions. During the loading of the hopper and the running of the vehicle, the front part of the auxiliary beam needs to bear the impact force brought by the start, brake and jolt of the vehicle, which also has strict requirements on its strength. However, the existing auxiliary beam structure often lacks pertinence in the strength design of the front and rear parts, and cannot meet the special needs of high strength of the two parts during the unloading or use of the hopper, which seriously affects the safety and efficiency of the vehicle in the material loading and unloading and transportation links. SUMMARY
[0005] The purpose of this invention is to provide a sub-beam structure for mining vehicles that is highly stable and not easily deformed, in order to address the above problems.
[0006] To achieve the above objectives, this utility model discloses a sub-beam structure for a mining vehicle, including a frame. The structure is characterized by having longitudinal beams flush with the outer end faces of the left and right side beams of the frame, with multiple transverse beams spaced apart between the two longitudinal beams. Positioning connecting plates connected to the outer walls of the left and right side beams of the frame are respectively provided on the outer end faces of the two longitudinal beams. Multiple through holes for mounting the longitudinal beams and the side beams of the frame are distributed on the positioning connecting plates.
[0007] With the above structure, a stable frame structure is constructed by aligning the longitudinal beams with the outer end faces of the side beams of the frame and cooperating with multiple spaced crossbeams. In this way, the longitudinal beams and crossbeams support each other, greatly enhancing the overall load-bearing capacity and deformation resistance of the sub-beams, and better coping with the bumps and impacts during the operation of mining vehicles. The mounting through holes on the positioning connecting plate connect the longitudinal beams and the side beams of the frame, providing convenience for the installation of other components. Through these mounting through holes, the installation position can be accurately located and the accuracy and firmness of component installation can be ensured, thereby improving the vehicle assembly efficiency.
[0008] Preferably, the rear ends of the two longitudinal beams are provided with tilting shaft mounting bushings that pass horizontally through the bodies of the two longitudinal beams and extend out of the outer end faces of the two longitudinal beams. A support seat fixed to the frame is provided on the tilting shaft mounting bushing body located between the two longitudinal beams. The tilting shaft mounting bushings provide a stable mounting base for the tilting shaft, and the fact that the bushings pass through the two longitudinal beams increases the reliability of the connection, making the tilting shaft less prone to displacement or loosening during operation. The support seat provides support for the tilting shaft mounting bushings, further improving the stability of the entire structure. It also effectively withstands the enormous force transmitted by the tilting shaft during unloading from the truck bed, ensuring the safe operation of the vehicle.
[0009] Preferably, the support base includes a fixed base plate and multiple support plates spaced apart along the length of the fixed base plate. Each support plate has corresponding positioning holes, the diameter of which is equal to the outer diameter of the rotating shaft mounting bushing, and the central axes of the multiple positioning holes are located on the same horizontal line. The front side of the support plate is fixed to the side wall of the crossbeam. Because the positioning holes on the support plates are equal to the outer diameter of the rotating shaft mounting bushing and their central axes are on the same horizontal line, the bushing can be accurately positioned and supported.
[0010] Preferably, a cross beam is provided between two adjacent crossbeams at the rear of the two longitudinal beams, and is cross-fixed to the main body at the corner of the crossbeam and the longitudinal beam. The top view of each end of the cross beam is inverted V-shaped with an included angle of 90°. The height of the cross beam is adapted to the height of the longitudinal beam and the crossbeam. By fixing the cross beam at the corner of the crossbeam and the longitudinal beam, the structural strength of the rear of the sub-beam can be effectively enhanced. When unloading from the truck bed, the rear of the sub-beam is prone to large stress. The cross beam can disperse the stress and prevent deformation and damage to the rear of the sub-beam. The inverted V-shaped structure can evenly distribute the force to the crossbeam and the longitudinal beam, improving the overall impact resistance of the sub-beam.
[0011] Preferably, two longitudinal beams located on the front side of the cross beam are respectively provided with hydraulic cylinder mounting seats connected to the cross beam at the front end of the cross beam. The hydraulic cylinder mounting seats are L-shaped baffles, and each of the two L-shaped baffles has corresponding mounting holes. The vertical plate of the L-shaped baffle is set vertically upward and parallel to the inner wall of the longitudinal beam. The rear end edge of the L-shaped baffle is fixed to the front wall of the cross beam. The L-shaped baffle provides a stable mounting position for the hydraulic cylinder, and the parallelism of the vertical plate to the inner wall of the longitudinal beam and the fixed rear end edge to the front wall of the cross beam ensures that the hydraulic cylinder mounting seat can be firmly fixed to the sub-beam, ensuring that the hydraulic cylinder will not shift during operation and guaranteeing the stability of actions such as lifting the truck bed.
[0012] Preferably, the inner wall of the positioning connecting plate is fixed to the outer wall of the longitudinal beam and the outer wall of the frame, and the width of the positioning connecting plate is adapted to the overall height of the longitudinal beam and the frame side wall, while the length of the positioning connecting plate is greater than the length of the longitudinal beam. By firmly fixing the positioning connecting plate to the longitudinal beam and the frame side wall, the connection stability between the sub-beam and the frame can be enhanced. Simultaneously, its width, adapted to the overall height of the longitudinal beam and the frame side wall, provides a certain degree of protection to the connection area, preventing external impurities from entering the connection gaps and reducing the risk of corrosion.
[0013] Preferably, a protective bracket is provided on the front part of the positioning connecting plate. The protective bracket includes a rectangular guardrail located outside the positioning connecting plate and parallel to the positioning connecting plate, and connecting rods at both ends of the upper part of the rectangular guardrail. The other end of the connecting rod is fixed to the positioning connecting plate, and a reinforcing rod connected to the lower side of the rectangular guardrail is provided in the middle of the connecting rod. By setting up the protective bracket, the front part of the positioning connecting plate and the components installed in this part can be protected from collisions and damage from external objects during vehicle operation.
[0014] Preferably, a battery mounting bracket and a radiator mounting bracket, fixed to the positioning connecting plate, are provided inside the protective bracket on the left side of the positioning connecting plate, and a fuel tank mounting bracket and a water tank mounting bracket, fixed to the positioning connecting plate, are provided inside the protective bracket on the right side of the positioning connecting plate. By setting the mounting brackets for components such as the battery, radiator, fuel tank, and water tank inside the protective brackets on both sides of the positioning connecting plate, not only is a reasonable layout of the components achieved, but this layout also facilitates the installation and maintenance of the components and allows the protective brackets to protect these components.
[0015] Preferably, reinforcing ribs are provided at the four corners between two adjacent crossbeams at the front of the two longitudinal beams, connecting the crossbeams and the longitudinal beams. Providing reinforcing ribs at the four corners between two adjacent crossbeams at the front of the two longitudinal beams effectively enhances the structural strength at these corners. Since the front of the vehicle is easily subjected to significant impact forces during vehicle operation, the reinforcing ribs can distribute stress, prevent deformation or damage at the corners, and improve the reliability of the front of the sub-beams.
[0016] In summary, the beneficial effects of this utility model are as follows: This utility model has strong stability and is not easily deformed. By having the longitudinal beams and the outer end faces of the side beams of the frame flush and cooperating with multiple spaced crossbeams, a stable frame structure is constructed. In this way, the longitudinal beams and crossbeams support each other, which greatly enhances the overall load-bearing capacity and deformation resistance of the sub-beams, and can better cope with the bumps and impacts during the operation of mining vehicles. Furthermore, the mounting through holes on the positioning connecting plate connect the longitudinal beams and the side beams of the frame, which facilitates the installation of other components. Through these mounting through holes, the installation position can be accurately positioned and the accuracy and firmness of component installation can be ensured, thereby improving the vehicle assembly efficiency. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0018] Figure 2 This is a top view of the structure of this utility model;
[0019] Figure 3 This is a side view of the structure of this utility model.
[0020] In the diagram: 1. Frame; 2. Longitudinal beam; 3. Crossbeam; 4. Positioning connecting plate; 5. Mounting through hole; 6. Tilting shaft mounting bushing; 7. Support seat; 8. Fixed base plate; 9. Support plate; 10. Positioning hole; 11. Cross beam; 12. Hydraulic cylinder mounting seat; 13. Protective bracket; 14. Rectangular guardrail; 15. Connecting rod; 16. Reinforcing rod; 17. Battery mounting bracket; 18. Radiator mounting bracket; 19. Fuel tank mounting bracket; 20. Water tank mounting bracket; 21. Reinforcing rib. Detailed Implementation
[0021] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.
[0022] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0023] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly, for example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0024] The following is a description of preferred embodiments of the present invention in conjunction with the accompanying drawings.
[0025] Referring to the accompanying drawings, this utility model includes a frame 1. Longitudinal beams 2, flush with the outer end faces of the side beams, are respectively provided on the upper surfaces of the left and right side beams of the frame 1. Multiple transverse beams 3, connected to the inner end faces of the two longitudinal beams 2, are spaced apart between them. The longitudinal beams 2, being flush with the outer end faces of the side beams of the frame 1 and cooperating with the multiple spaced transverse beams 3, construct a stable rectangular frame structure. In this way, the longitudinal beams 2 and transverse beams 3 support each other, greatly enhancing the overall load-bearing capacity and deformation resistance of the sub-beams, and better coping with the bumps and impacts during the movement of mining vehicles. During the design, a cross beam 11 is provided between two adjacent transverse beams 3 located at the rear of the two longitudinal beams 2, cross-fixed to the body at the corner of the transverse beam 3 and the longitudinal beam 2. The top view of each end of the cross beam 11 is inverted V-shaped with an included angle of 90°. Simultaneously, the height of the cross beam 11 is adapted to the height of the longitudinal beams 2 and the transverse beams 3. Typically, during manufacturing, the height of the cross beam 11 is equal to the height of the longitudinal beams 2 and the transverse beams 3. By fixing the crossbeam 11 to the corner of the crossbeam 3 and the longitudinal beam 2, the structural strength of the rear of the sub-beam can be effectively enhanced. Since the rear of the sub-beam is prone to significant stress during unloading from the truck bed, the crossbeam 11 disperses this stress, preventing deformation and damage to the rear of the sub-beam. The inverted V-shaped structure evenly distributes the force onto the crossbeam 3 and the longitudinal beam 2, improving the overall impact resistance of the sub-beam. During manufacturing, reinforcing ribs 21 are installed at the four corners between two adjacent crossbeams 3 at the front of the two longitudinal beams 2, connecting the crossbeam 3 and the longitudinal beam 2. By installing reinforcing ribs 21 at the four corners between two adjacent crossbeams 3 at the front of the two longitudinal beams 2, the structural strength at these corners is effectively enhanced. Since the front of the vehicle is prone to significant impact during driving, the reinforcing ribs 21 disperse this stress, preventing deformation or damage at the corners and improving the reliability of the front of the sub-beam.
[0026] At the rear end of the two longitudinal beams 2, i.e., the rear side of the cross beam 11, there is a tilting shaft mounting sleeve 6 that passes horizontally through the body of the two longitudinal beams 2 and extends out of the outer end face of the two longitudinal beams 2. The tilting shaft mounting sleeve 6 located between the two longitudinal beams 2 is also provided with a support seat 7 fixed to the frame 1. In this way, the tilting shaft mounting sleeve 6 provides a stable mounting base for the tilting shaft. The tilting shaft mounting sleeve 6 passes through the two longitudinal beams 2, which can also increase the reliability of the connection and make the tilting shaft less likely to be displaced or loosened during operation. The support seat 7 can support the tilting shaft mounting sleeve 6, thereby further improving the stability of the entire structure. It can also effectively withstand the huge force transmitted by the tilting shaft during the unloading process of the truck bed, ensuring the safe operation of the vehicle. During manufacturing, the aforementioned support base 7 includes a fixed base plate 8 and multiple support plates 9 spaced apart along the length of the fixed base plate 8. Each support plate 9 has corresponding positioning holes 10. The diameter of each positioning hole 10 is equal to the outer diameter of the rotating shaft mounting bushing 6, and the central axes of the multiple positioning holes 10 are located on the same horizontal line. At the same time, the front side of the support plate 9 is fixed to the side wall of the crossbeam 3. In this way, by ensuring that the positioning holes 10 on the support plate 9 are equal to the outer diameter of the rotating shaft mounting bushing 6 and that the central axes are on the same horizontal line, the bushing can be accurately positioned and supported.
[0027] Hydraulic cylinder mounting seats 12 are respectively provided on the two longitudinal beams 2 located in front of the cross beam 11 and connected to the cross beam 3 at the front end of the cross beam 11. The hydraulic cylinder mounting seats 12 are L-shaped baffles with corresponding mounting holes on the two L-shaped baffles. In the design, the vertical plate of the L-shaped baffle is set vertically upward and parallel to the inner wall of the longitudinal beam 2. The rear end edge of the L-shaped baffle is fixed to the front wall of the cross beam 3. In this way, the L-shaped baffle provides a stable mounting position for the hydraulic cylinder. The parallelism of the vertical plate to the inner wall of the longitudinal beam 2 and the fixed rear end edge to the front wall of the cross beam 3 can firmly fix the hydraulic cylinder mounting seats 12 to the sub-beam, ensuring that the hydraulic cylinder will not be displaced during operation and ensuring the stability of actions such as lifting the truck bed.
[0028] Positioning connecting plates 4 are respectively provided on the outer end faces of the two longitudinal beams 2, which are connected to the outer side walls of the left and right side beams of the frame 1. Multiple mounting through holes 5 are distributed on the positioning connecting plates 4, which pass through the longitudinal beams 2 and the side beams of the frame 1. In the design, the inner wall of the positioning connecting plate 4 is attached to the outer side wall of the longitudinal beam 2 and the outer side wall of the frame 1. The width of the positioning connecting plate 4 is adapted to the overall height of the longitudinal beam 2 and the side wall of the frame 1, while the length of the positioning connecting plate 4 is greater than the length of the longitudinal beam 2. By firmly fixing the positioning connecting plate 4 to the longitudinal beam 2 and the side wall of the frame 1, the connection stability between the sub-beam and the frame 1 can be enhanced. At the same time, its width is adapted to the overall height of the longitudinal beam 2 and the side wall of the frame 1, which can play a certain protective role in the connection part, prevent external impurities from entering the connection gap, and reduce the risk of corrosion. During manufacturing, multiple mounting through holes 5 are distributed at intervals on the positioning connecting plate 4. At the same time, the mounting through holes 5 on the positioning connecting plate 4 penetrate the longitudinal beam 2 and the side beam of the frame 1, which provides convenience for the installation of other components. Through these mounting through holes 5, the installation position can be accurately positioned and the accuracy and firmness of component installation can be ensured, thereby improving the vehicle assembly efficiency.
[0029] A protective bracket 13 is provided on the front part of the positioning connecting plate 4. This protective bracket 13 includes a rectangular guardrail 14 located outside and parallel to the positioning connecting plate 4, and connecting rods 15 at both ends of the upper part of the rectangular guardrail 14. The other end of each connecting rod 15 is fixed to the positioning connecting plate 4. A reinforcing rod 16 is also provided in the middle of the connecting rod 15, connecting to the lower side of the rectangular guardrail 14. Thus, the protective bracket 13 protects the front part of the positioning connecting plate 4 and the components installed there, preventing collisions and damage from external objects during vehicle operation. During manufacturing, the rectangular guardrail 14 is a rectangular frame structure composed of multiple strip rods.
[0030] Inside the protective bracket 13 on the left side of the positioning connecting plate 4, there are battery mounting brackets 17 and radiator mounting brackets 18 fixed to the plate body. Inside the protective bracket 13 on the right side of the positioning connecting plate 4, there are fuel tank mounting brackets 19 and water tank mounting brackets 20 fixed to the plate body. During the design, the aforementioned mounting brackets are installed on the mounting through holes 5 of the positioning connecting plate 4 using fixing bolts. Of course, other mounting brackets for fixing devices can also be installed on the mounting through holes 5 of the positioning connecting plate 4 according to usage needs. By setting the mounting brackets for components such as batteries, radiators, fuel tanks, and water tanks inside the protective brackets 13 on both sides of the positioning connecting plate 4, not only is a reasonable layout of components achieved, but this layout also facilitates the installation and maintenance of components and provides protection for these components using the protective brackets 13. During manufacturing, the structure of the aforementioned mounting brackets needs to be reasonably set according to the different sizes and models of each device, and is usually constructed using multiple connecting steel plates and multiple square steel pipes.
[0031] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A subframe structure for mining vehicles, comprising a frame (1), characterized in that: The upper end face of the left and right side beams of the frame (1) is provided with a longitudinal beam (2) that is flush with the outer end face of the side beam. Multiple cross beams (3) are provided between the two longitudinal beams (2). Positioning connecting plates (4) that are connected to the outer side walls of the left and right side beams of the frame (1) are provided on the outer end face of the two longitudinal beams (2). Multiple through holes (5) for mounting the longitudinal beams (2) and the side beams of the frame (1) are distributed on the positioning connecting plate (4).
2. The sub-beam structure for mining vehicles as described in claim 1, characterized in that: The rear ends of the two longitudinal beams (2) are provided with a flip shaft mounting bushing (6) that passes through the body of the two longitudinal beams (2) in the horizontal direction and extends out of the outer end face of the two longitudinal beams (2). The flip shaft mounting bushing (6) located between the two longitudinal beams (2) is provided with a support seat (7) fixed on the frame (1).
3. The sub-beam structure for mining vehicles as described in claim 2, characterized in that: The support base (7) includes a fixed base plate (8) and multiple support plates (9) spaced apart along the length of the fixed base plate (8). Each support plate (9) has a corresponding positioning hole (10). The diameter of the positioning hole (10) is equal to the outer diameter of the rotating shaft mounting bushing (6), and the central axis of the multiple positioning holes (10) is located on the same horizontal straight line. The front side of the support plate (9) is fixed to the side wall of the crossbeam (3).
4. The sub-beam structure for mining vehicles as described in claim 1, characterized in that: A cross beam (11) is provided between two adjacent cross beams (3) located at the rear of the two longitudinal beams (2) and is fixedly connected to the body at the corner of the cross beam (3) and the longitudinal beam (2). The top view of each end of the cross beam (11) is inverted V-shaped and the included angle of the ends is 90°. The height of the cross beam (11) is adapted to the height of the longitudinal beam (2) and the cross beam (3).
5. The sub-beam structure for mining vehicles as described in claim 4, characterized in that: Hydraulic cylinder mounting seats (12) are respectively provided on the two longitudinal beams (2) located in front of the cross beam (11) and connected to the cross beam (3) at the front end of the cross beam (11). The hydraulic cylinder mounting seats (12) are L-shaped baffles and the two L-shaped baffles are respectively provided with corresponding mounting holes. The vertical plate of the L-shaped baffle is set upward in the vertical direction and is parallel to the inner side wall of the longitudinal beam (2). The rear end edge of the L-shaped baffle is fixed to the front side wall of the cross beam (3).
6. The sub-beam structure for mining vehicles as described in claim 1, characterized in that: The inner wall of the positioning connecting plate (4) is fixed to the outer wall of the longitudinal beam (2) and the outer wall of the frame (1), and the width of the positioning connecting plate (4) is adapted to the overall height of the longitudinal beam (2) and the side wall of the frame (1). The length of the positioning connecting plate (4) is greater than the length of the longitudinal beam (2).
7. The sub-beam structure for mining vehicles as described in claim 1, characterized in that: A protective bracket (13) is provided on the front plate of the positioning connecting plate (4). The protective bracket (13) includes a rectangular guardrail (14) located outside the positioning connecting plate (4) and parallel to the positioning connecting plate (4), and connecting rods (15) provided at both ends of the upper part of the rectangular guardrail (14). The other end of the connecting rod (15) is fixed on the positioning connecting plate (4), and a reinforcing rod (16) connected to the lower side of the rectangular guardrail (14) is provided in the middle of the connecting rod (15).
8. The sub-beam structure for mining vehicles as described in claim 7, characterized in that: The protective bracket (13) located on the left side of the positioning connecting plate (4) is provided with a battery mounting bracket (17) and a radiator mounting bracket (18) fixed on the plate body of the positioning connecting plate (4). The protective bracket (13) located on the right side of the positioning connecting plate (4) is provided with an oil tank mounting bracket (19) and a water tank mounting bracket (20) fixed on the plate body of the positioning connecting plate (4).
9. The sub-beam structure for mining vehicles as described in claim 1, characterized in that: At the four corners between the two adjacent crossbeams (3) located in front of the two longitudinal beams (2), there are reinforcing ribs (21) that connect the crossbeams (3) and the longitudinal beams (2).