Frame and mining vehicle

Abstract

The invention provides a vehicle frame and a mining vehicle. The frame comprises a main longitudinal beam and a mounting base, the main longitudinal beam extends in the first direction and comprises a first wall body, a second wall body and a third wall body, the first wall body and the second wall body are oppositely arranged in the second direction, and the third wall body is located on one side of the main longitudinal beam in the third direction and connected between the first wall body and the second wall body. The first direction, the second direction and the third direction intersect pairwise. The mounting base comprises a bearing piece and a connecting piece, the bearing piece is connected to the connecting piece and used for bearing the accessory part, the connecting piece comprises a first part, a second part and a third part, the third part is connected between the first part and the second part, and the first part is connected to the side, opposite to the second wall body, of the first wall body; the second part is connected to the side, back to the first wall body, of the second wall body, and the third part is connected to the outer side of the third wall body. According to the embodiment of the invention, the overall reliability of the frame can be effectively improved.

Description

Technical Field

[0001] This application relates to the field of mining equipment technology, and in particular to a chassis and mining vehicle. Background Technology

[0002] Mining environments typically feature undulating terrain and poor road conditions, with roads often being unpaved, uneven, covered in gravel, or consisting of ramps. When mining vehicles operate under these conditions, the irregular contact between the tires and the ground causes continuous and significant vibration excitation, accompanied by frequent impact loads. Especially under conditions of heavy load operation, emergency braking, sudden stops, or downhill braking, the entire vehicle structure also bears significant inertial impact forces and dynamic loads. These complex loads are transmitted to the chassis, placing it under a complex stress state of superimposed vibration and impact loads over a long period.

[0003] In mining vehicles, the chassis, as the main load-bearing structure, typically includes a main beam and mounting brackets or support structures for auxiliary components such as hydraulic tanks and fuel tanks. These mounting brackets are mostly directly fixed to the main beam by welding. However, the weld area often becomes a weak point. Under long-term vibration and repeated impact loads, the discontinuity in the geometry and material properties of the weld area easily leads to stress concentration, causing fatigue damage and even structural cracking in the weld and its adjacent areas. This severely affects the overall reliability of the chassis and consequently the economic benefits of the product. Therefore, effectively improving the overall reliability of the chassis is an ongoing research direction. Summary of the Invention

[0004] In view of the above problems, this application provides a chassis and a mining vehicle that can effectively improve the overall reliability of the chassis.

[0005] In a first aspect, embodiments of this application provide a vehicle frame, which includes a main longitudinal beam and a mounting base. The main longitudinal beam extends along a first direction and includes a first wall, a second wall, and a third wall. The first and second walls are arranged opposite each other along a second direction, and the third wall is located on one side of the main longitudinal beam along a third direction. The third wall connects the first and second walls, and the first, second, and third directions intersect each other. The mounting base includes a support member and a connector. The support member is connected to the connector and is used to support auxiliary components. The connector includes a first part, a second part, and a third part. The third part connects between the first and second parts. The first part is connected to the side of the first wall facing away from the second wall, the second part is connected to the side of the second wall facing away from the first wall, and the third part is connected to the outer side of the third wall.

[0006] In some embodiments of the first aspect, the main longitudinal beam further includes a support member connected between the first wall and the second wall. In the same plane perpendicular to the second direction, the projections of the support member, the first portion, and the second portion at least partially overlap.

[0007] In some embodiments of the first aspect, a first wall has a first through hole that penetrates the first wall along a second direction, and a second wall has a second through hole that penetrates the second wall along a second direction. A first portion has a third through hole that penetrates the first portion along a second direction, and a second portion has a fourth through hole that penetrates the second portion along a second direction. A support member has a fifth through hole that penetrates the support member along a second direction, and the first, second, third, fourth, and fifth through holes are interconnected. The frame also includes a fixing member that passes through the first, second, third, fourth, and fifth through holes and fixes the first and second portions to the main longitudinal beam.

[0008] In some embodiments of the first aspect, the support member includes a main body, a first end portion, and a second end portion, the main body abutting between a first wall and a second wall. The first end portion is connected to the end of the main body near the first wall, at least a portion of the first end portion is disposed within a first through hole, and the first end portion abuts against the first part. The second end portion is connected to the end of the main body near the second wall, at least a portion of the second end portion is disposed within a second through hole, and the second end portion abuts against the second part.

[0009] In some embodiments of the first aspect, the frame further includes a mounting strip extending along a first direction. The mounting strip has two fixing portions located at opposite ends of the mounting strip along the first direction, and the mounting strip is connected to the main longitudinal beam via the fixing portions. The mounting strip has multiple mounting holes spaced apart along the first direction.

[0010] In some embodiments of the first aspect, the frame further includes a limiting member connected to the main longitudinal beam, the limiting member being used to restrict the displacement of the cargo box of the mining vehicle along a second direction. The limiting member includes a limiting body and a guide portion, the guide portion being connected to the end of the limiting body along a third direction and close to the cargo box, the included angle between the side surface of the guide portion facing away from the main longitudinal beam and the side surface of the limiting body facing away from the main longitudinal beam being an obtuse angle.

[0011] In some embodiments of the first aspect, the frame includes two main longitudinal beams spaced apart along a second direction. The frame also includes a lifting crossbeam, which includes a beam body and an axle head. The beam body is connected between the two main longitudinal beams, and the axle head is connected to both ends of the beam body along the second direction, extending beyond the outer side of the main longitudinal beams. The axle head includes a shaft portion and a shoulder portion. The shaft portion is used to connect with a lifting cylinder, and the shoulder portion protrudes from the outer peripheral surface of the shaft portion. The frame also includes a spacer, disposed on the side of the shoulder facing the shaft portion, for abutting against the lifting cylinder. The stiffness of the spacer is less than the stiffness of the axle head.

[0012] In some embodiments of the first aspect, the shoulder has a first surface on the side facing the shaft, the first surface is connected to the outer peripheral surface of the shaft by a first arc surface, and a gap is provided between the spacer and the first arc surface.

[0013] In some embodiments of the first aspect, the shaft head has a cavity inside, and the cross-sectional area of ​​the cavity perpendicular to the second direction gradually decreases in the second direction and away from the beam body.

[0014] Secondly, embodiments of this application provide a mining vehicle, which includes the chassis of any of the above-described solutions.

[0015] The frame provided in this application has a mounting base that is connected to the outer side of the first wall, second wall, and third wall of the main longitudinal beam through the first part, second part, and third part of the connector, respectively, so that the mounting base and the main longitudinal beam form a clamp-type connection structure.

[0016] Because the loads borne by the supporting components can be transferred to the first, second, and third walls via the first, second, and third sections, the loads are no longer concentrated in a single localized area but are instead distributed among the multiple walls of the main longitudinal beam. This helps reduce stress concentration in localized areas, especially at connection edges and near welds, mitigating the risk of fatigue damage caused by long-term alternating loads.

[0017] Furthermore, the clamp-like connection structure formed by the first, second, and third parts can provide multi-directional constraint on the main longitudinal beam. Thus, when the mining vehicle is subjected to complex working conditions such as continuous vibration, bumps and impacts, heavy-load operation, emergency braking, or downhill braking, the mounting base is less prone to local warping, loosening, or cracking relative to the main longitudinal beam, thereby improving the structural stability and impact resistance of the mounting base. In this way, the above technical solution can effectively improve the overall reliability of the chassis.

[0018] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0019] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 A three-dimensional structural diagram of a vehicle frame provided for some embodiments of this application; Figure 2 for Figure 1 A magnified schematic diagram of the local structure at point G; Figure 3 for Figure 2 A partial cross-sectional schematic diagram of the structure shown; Figure 4 for Figure 3 A magnified schematic diagram of the local structure at point K; Figure 5 for Figure 1 A magnified schematic diagram of the local structure at point F; Figure 6 for Figure 1 A magnified schematic diagram of the local structure at point H; Figure 7 for Figure 6 A partial cross-sectional schematic diagram of the structure shown; Figure 8 This is a front view structural diagram of a vehicle frame provided in some embodiments of this application; Figure 9 for Figure 8 A schematic diagram of a partial cross-sectional structure along AA; Figure 10 for Figure 9 A magnified schematic diagram of the local structure at point L; Figure 11 This is a top view of a vehicle frame structure provided in some embodiments of this application; Figure 12 for Figure 11 A magnified schematic diagram of the local structure at point M; Figure 13 for Figure 8 A schematic diagram of a partial cross-sectional structure along BB; Figure 14 for Figure 13 A magnified schematic diagram of the structure at point N.

[0020] The reference numerals in the detailed embodiments are as follows: 10. Main longitudinal beam; 11. First wall; 12. Second wall; 13. Third wall; 14. Fourth wall; 15. Supporting component; 151. Main body; 152. First end; 153. Second end; 16. Partition; 17. Pad; 18. Arch structure; 20. Mounting base; 21. Support component; 22. Connector; 221. First part; 222. Second part; 223. Third part; 30. Fasteners; 40. Mounting strip; 41. Fixing part; 42. Mounting hole; 50. Limiting component; 51. Limiting body; 52. Guide part; 60. Lifting beam; 61. Beam body; 62. Axle head; 621. Axle section; 622. Shoulder section; 63. Cavity; 70. Spacer; 80. Platform body; 90. Secondary longitudinal beam; 100. Steering seat; 110. Central swing arm; 120. Blocking component; 130. Cargo box support component; 140. Support component limiting seat; 150. Clearance groove; W, lifting cylinder; S, clearance; X, first direction; Y, second direction; Z, third direction. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the specification of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, rather than to describe a specific order or hierarchy.

[0023] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0024] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0025] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0026] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0027] In this application, "multiple" means two or more (including two).

[0028] In this application, the term "parallel" includes not only the case of absolute parallelism, but also the case of approximate parallelism as commonly understood in engineering; similarly, "perpendicular" includes not only the case of absolute perpendicularity, but also the case of approximate perpendicularity as commonly understood in engineering.

[0029] The vehicle frame provided in the embodiments of this application will now be described in conjunction with the accompanying drawings. Figure 1 This is a three-dimensional structural diagram of a vehicle frame provided in some embodiments of this application. Figure 2 for Figure 1 A magnified schematic diagram of the local structure at point G. Figure 3 for Figure 2 A partial cross-sectional schematic diagram of the structure shown. Figure 4 for Figure 3 A magnified schematic diagram of the local structure at point K.

[0030] refer to Figures 1 to 4This application provides a vehicle frame, which includes a main longitudinal beam 10 and a mounting base 20. The main longitudinal beam 10 extends along a first direction X and includes a first wall 11, a second wall 12 and a third wall 13. The first wall 11 and the second wall 12 are arranged opposite each other along a second direction Y. The third wall 13 is located on one side of the main longitudinal beam 10 along a third direction Z and is connected between the first wall 11 and the second wall 12. The first direction X, the second direction Y and the third direction Z intersect each other.

[0031] Mounting base 20 includes a support 21 and a connector 22. The support 21 is connected to the connector 22 and is used to support the auxiliary components. The connector 22 includes a first part 221, a second part 222 and a third part 223. The third part 223 is connected between the first part 221 and the second part 222. The first part 221 is connected to the side of the first wall 11 facing away from the second wall 12. The second part 222 is connected to the side of the second wall 12 facing away from the first wall 11. The third part 223 is connected to the outside of the third wall 13.

[0032] The chassis provided in this application embodiment can be applied to mining vehicles.

[0033] The main longitudinal beam 10 serves as the main load-bearing structure of the vehicle frame and can be used to bear the loads generated by auxiliary components, its own structure, and external working conditions during the operation of the vehicle.

[0034] The first direction X can be understood as the length direction of the mining vehicle, the second direction Y can be understood as the width direction of the mining vehicle, and the third direction Z can be understood as the height direction of the mining vehicle.

[0035] The first wall 11, the second wall 12, and the third wall 13 not only serve to enclose the outline of the main longitudinal beam 10, but also serve as the load-bearing surface for connecting the mounting base 20.

[0036] Optionally, the connection between the first wall 11, the second wall 12 and the third wall 13 can be, but is not limited to, welding, bolting or riveting.

[0037] Optionally, the main longitudinal beam 10 can be made of high-strength steel, aluminum alloy or composite material to balance load-bearing strength and lightweight requirements.

[0038] Mounting base 20 is used to install auxiliary components, support member 21 is used to support auxiliary components, and connector 22 is used to fix the mounting base 20 to the main longitudinal beam 10.

[0039] For example, the auxiliary components may be hydraulic oil tanks, fuel tanks, electrical control boxes, or other components that need to be mounted on the vehicle frame.

[0040] The support component 21 can be a hook-shaped structure, a plate-shaped structure, a frame-shaped structure, a tray-shaped structure, or other support structure with support function.

[0041] The support member 21 may be provided with mounting holes 42, positioning holes, limiting edges, flanges, reinforcing ribs or connecting ear plates to facilitate the installation and fixation of auxiliary components and improve the local rigidity and stability of the support member 21 itself.

[0042] The first part 221, the second part 222 and the third part 223 of the connector 22 are respectively connected to different outer surfaces of the main longitudinal beam 10, so that the connector 22 can form a multi-faceted connection relationship around the outer contour of the main longitudinal beam 10.

[0043] Specifically, the first part 221 is connected to the outer region of the first wall 11, the second part 222 is connected to the outer region of the second wall 12, and the third part 223 is connected to the outer region of the third wall 13. Since the third part 223 connects between the first part 221 and the second part 222, the first part 221, the second part 222, and the third part 223 can be arranged in a continuous structural configuration. The support member 21 is connected to the connector 22, and the load applied to the support member 21 by the auxiliary components can be distributed and transferred to the first wall 11, the second wall 12, and the third wall 13 via the connector 22.

[0044] In other words, the mounting base 20 can form a clamp-like connection structure through the first part 221, the second part 222, and the third part 223. This clamp-like connection structure can be understood as the connector 22 wrapping around at least three outer regions of the main longitudinal beam 10, creating a hugging or clamping connection between the mounting base 20 and the main longitudinal beam 10. This connection differs from welding the mounting base 20 only to one side of the wall; it increases the contact and connection range between the mounting base 20 and the main longitudinal beam 10, thus improving the connection strength between them.

[0045] With the above structural design, the mounting base 20 no longer relies solely on a local weld or a single side wall to bear the load of the auxiliary components, but can cooperate with the main longitudinal beam 10 to bear the force through the first part 221, the second part 222 and the third part 223.

[0046] Optionally, the first part 221, the second part 222, and the third part 223 can all be one or a combination of plate-shaped structures, column-shaped structures, or block-shaped structures.

[0047] For example, the first wall 11, the second wall 12, and the third wall 13 can form a channel beam structure, or they can be combined with other auxiliary wall panels to form a semi-enclosed or closed structure. As long as the first wall 11 and the second wall 12 are arranged opposite each other, and the third wall 13 is located on one side and connected between the two, three connection bases can be provided for the mounting base 20, which can meet the implementation requirements of this application.

[0048] The first wall 11 and the second wall 12 can be parallel flat plate structures, or they can be non-parallel inclined plate structures depending on the overall frame layout, space avoidance, or stress requirements. The third wall 13 can be a flat plate structure, or it can be an arc-shaped transition structure, a bent structure, a reinforced structure with flanges, or a locally thickened structure.

[0049] The structural form of the support component 21 can be adjusted according to different auxiliary components. When the auxiliary component is a box-type component, such as a hydraulic oil tank or fuel tank, the support component 21 can be a pallet-type structure or a hook-shaped structure; when the auxiliary component is a cylindrical component or an irregular component, the support component 21 can also be set as an arc-shaped support, a saddle-shaped support, or a support structure with limit barriers. The support component 21 can also be provided with vibration damping pad mounting positions, anti-slip parts, or maintenance clearance openings to improve its adaptability.

[0050] The first part 221, the second part 222 and the third part 223 of the connector 22 can be integrally molded, for example, formed by bending the same sheet material, in order to reduce splicing parts and improve overall integrity.

[0051] The first part 221, the second part 222, and the third part 223 of the connector 22 can also be separate structures, for example, manufactured separately and then formed into a whole by welding, screwing, riveting, or other connection methods. Using a separate structure is beneficial for adapting to different installation spaces and size requirements.

[0052] The connection between the first part 221 and the first wall 11, the second part 222 and the second wall 12, and the third part 223 and the third wall 13 can also take various forms. These can be welded connections, such as continuous welding, intermittent welding, fillet welding, or plug welding; mechanical connections, such as bolted connections, riveted connections, or snap-fit ​​connections; or composite connections combining welding and mechanical connections.

[0053] Regarding the specific degree of coverage of the clamp-like connection structure formed by the first part 221, the second part 222, and the third part 223 of the connector 22, it can be that the first part 221, the second part 222, and the third part 223 basically correspond to the three outer surfaces of the main longitudinal beam 10, forming a relatively complete covering connection; or it can be that the first part 221, the second part 222, and the third part 223 only cover a local area of ​​the corresponding wall. As long as the three parts can form a multi-faceted constraint relationship after being combined and produce a clamp-like connection effect relative to the main longitudinal beam 10, the technical objective of this application can be achieved.

[0054] The connection between the support member 21 and the connector 22 can take various forms. The support member 21 can be directly welded to the third part 223, or it can span across the top of the first part 221, the third part 223, and the second part 222. It can also be connected to the connector 22 by means of a vertical plate, a support arm, or a reinforcing rib. In other words, as long as the support member 21 can transfer the load of the auxiliary components to the main longitudinal beam 10 through the connector 22, and enable the first part 221, the second part 222, and the third part 223 to jointly participate in the stress, it belongs to the extension form of the concept of this application.

[0055] In the vehicle frame provided in this application embodiment, the mounting seat 20 is connected to the outer side of the first wall 11, the second wall 12, and the third wall 13 of the main longitudinal beam 10 through the first part 221, the second part 222, and the third part 223 of the connector 22, respectively, so that the mounting seat 20 and the main longitudinal beam 10 form a clamp-type connection structure.

[0056] Because the loads of the auxiliary components borne by the support member 21 can be transferred to the first wall 11, the second wall 12, and the third wall 13 via the first part 221, the second part 222, and the third part 223, the load is no longer concentrated in a localized area but can be distributed among the multiple walls of the main longitudinal beam 10. This helps to reduce the stress concentration in localized areas, especially at connection edges and near welds, and mitigates the risk of fatigue damage caused by long-term alternating loads.

[0057] Furthermore, the clamp-like connection structure formed by the first part 221, the second part 222, and the third part 223 can provide multi-directional constraint on the main longitudinal beam 10. Thus, when the mining vehicle is subjected to complex working conditions such as continuous vibration, bumps and impacts, heavy-load operation, emergency braking, or downhill braking, the mounting base 20 is less prone to local warping, loosening, or cracking relative to the main longitudinal beam 10, thereby improving the structural stability and impact resistance of the mounting base 20. In this way, the above technical solution can effectively improve the overall reliability of the chassis.

[0058] In some embodiments, a transition connection structure may also be provided between the connector 22 and the main longitudinal beam 10. For example, a transition pad may be provided between the first portion 221 and the first wall 11, a local reinforcing plate may be provided between the second portion 222 and the second wall 12, and a buffer pad or reinforcing liner may be provided between the third portion 223 and the third wall 13. By providing the above-mentioned transition connection structure, the stress distribution in the connection area can be further improved, and the risk of stress concentration at local locations can be reduced.

[0059] In some embodiments, the main longitudinal beam 10 further includes a fourth wall 14, which is disposed opposite to the third wall 13 in the third direction Z, and the fourth wall 14 is connected between the first wall 11 and the second wall 12.

[0060] In some embodiments, the main longitudinal beam 10 further includes a partition 16, which is connected between the first wall 11 and the second wall 12, thereby improving the overall structural strength of the main longitudinal beam 10.

[0061] In some embodiments, the partition 16 is connected between the third wall 13 and the fourth wall 14.

[0062] In some embodiments, the main longitudinal beam 10 further includes a gasket 17, the first wall 11 and the third wall 13 are welded together, the weld is located on the outside of the first wall 11 and the third wall 13, and the gasket 17 is disposed at the connection between the first wall 11 and the third wall 13 and is located on the inside of the first wall 11 and the third wall 13.

[0063] During the welding process between the first wall 11 and the third wall 13, the shim 17 can prevent the molten welding metal from flowing into the interior of the main longitudinal beam 10, making the molten welding metal more stable and improving the welding quality.

[0064] In some embodiments, the support member 21 is connected to the first part 221, and the contact area between the first part 221 and the first wall 11 is greater than the contact area between the second part 222 and the second wall 12.

[0065] On the one hand, it strengthens the connection between the first part 221 and the first wall 11 to better support the support member 21; on the other hand, it can appropriately reduce the amount of material used in the second part 222, which helps to lighten the frame and reduce costs.

[0066] In some embodiments, the main longitudinal beam 10 further includes a support member 15, which is connected between the first wall 11 and the second wall 12. In the same plane perpendicular to the second direction Y, the projections of the support member 15, the first portion 221, and the second portion 222 at least partially overlap.

[0067] The support member 15 is disposed in the internal region of the main longitudinal beam 10 to form a connection and support between the first wall 11 and the second wall 12, thereby improving the local structural strength of the corresponding region of the main longitudinal beam 10.

[0068] Optionally, the support member 15 can be a cylindrical structure, a plate structure, a rib, or other structure that can establish a force transmission relationship between the first wall 11 and the second wall 12.

[0069] The support member 15 can be connected between the first wall 11 and the second wall 12 by welding, or by riveting, bolting, snapping or other fixing methods.

[0070] Alternatively, the support 15 may be made of high-strength steel, aluminum alloy or composite material to balance load-bearing strength and lightweight requirements.

[0071] The projections of the support member 15, the first part 221 and the second part 222 may partially overlap, or the projections of the support member 15, the first part 221 and the second part 222 may overlap.

[0072] Since the first part 221 and the second part 222 are respectively connected to the outer sides of the first wall 11 and the second wall 12, when the mounting base 20 supports the auxiliary components and is subjected to vibration loads, impact loads, or inertial loads, the contact points between the first wall 11 and the first part 221, and between the second wall 12 and the second part 222, are usually areas where local stress is relatively concentrated. By providing a support member 15 on the inner side of this area, the first wall 11 and the second wall 12 can obtain better internal support when subjected to local compression, tension, or shear, thereby improving the structural strength at the corresponding locations.

[0073] Meanwhile, since the support member 15 is connected between the first wall 11 and the second wall 12, the support member 15 can also enhance the structural connection between the first wall 11 and the second wall 12 and improve the overall rigidity of the main longitudinal beam 10 in the connection area of ​​the mounting base 20.

[0074] Therefore, by providing a support member 15 inside the main longitudinal beam 10, and enabling the support member 15 to provide targeted support for the contact position between the first wall 11 and the first part 221 and the contact position between the second wall 12 and the second part 222, this embodiment of the application can not only improve the structural strength of the corresponding positions, but also further improve the force transmission relationship between the mounting base 20 and the main longitudinal beam 10, thereby improving the overall reliability and service life of the frame.

[0075] In some embodiments, the support member 15 can also be connected to the third wall 13 to form a three-sided support structure, so as to further improve the deformation resistance of the local area of ​​the main longitudinal beam 10.

[0076] In some embodiments, the first wall 11 has a first through hole that penetrates the first wall 11 along the second direction Y, and the second wall 12 has a second through hole that penetrates the second wall 12 along the second direction Y. The first portion 221 has a third through hole that penetrates the first portion 221 along the second direction Y, and the second portion 222 has a fourth through hole that penetrates the second portion 222 along the second direction Y.

[0077] The support member 15 has a fifth through hole, which extends through the support member 15 along the second direction Y. The first through hole, the second through hole, the third through hole, the fourth through hole, and the fifth through hole are interconnected. The frame also includes a fixing member 30, which passes through the first through hole, the second through hole, the third through hole, the fourth through hole, and the fifth through hole, and fixes the first part 221 and the second part 222 to the main longitudinal beam 10.

[0078] The fastener 30 passes through the first part 221, the first wall 11, the support 15, the second wall 12, and the second part 222. Thus, the first part 221 and the second part 222 can be pressed together against both sides of the main longitudinal beam 10 along the second direction Y by means of the fastener 30, while the support 15 is located between the first wall 11 and the second wall 12 and provides support force. In this way, the connection between the first part 221 and the first wall 11, and between the second part 222 and the second wall 12, is no longer solely based on surface contact, but rather a through-type, clamping connection is formed under the action of the fastener 30.

[0079] Specifically, after the fastener 30 passes through the aforementioned through holes along the second direction Y, the fastener 30 can apply a preload force to the first part 221 and the second part 222 located on the outer side, bringing them closer together. This preload force allows the first part 221 to fit more closely to the outer side of the first wall 11, and the second part 222 to fit more closely to the outer side of the second wall 12. Simultaneously, it also allows a more stable force connection to be formed between the internal support member 15 and the first wall 11 and the second wall 12. Thus, the mounting base 20 and the main longitudinal beam 10 not only have an externally enveloping connection, but also a connection path that extends through both the inside and outside through the fastener 30.

[0080] After the fastener 30 is installed, it enables the first part 221, the first wall 11, the support 15, the second wall 12, and the second part 222 to form a load-bearing structure connected in series along the second direction Y. In this way, when the load generated by the support member 21 and its accessories is transmitted to the main longitudinal beam 10 via the first part 221 or the second part 222, it can not only be transmitted through the surface diffusion of the first wall 11 and the second wall 12, but also through the fastener 30 and the support 15 to establish a more direct load transmission channel.

[0081] For example, the first through hole, the second through hole, the third through hole, the fourth through hole, and the fifth through hole can be round holes to fit the cylindrical fastener 30; they can also be oblong holes, elongated holes, or irregularly shaped holes with a certain adjustment margin to allow for position compensation and tolerance adjustment during assembly.

[0082] The fastener 30 can be a bolt and nut assembly, providing a stable preload through a threaded connection; the fastener 30 can also be a pin with a locking element, a stud with a fastening nut, a sleeve-type tensioning element, or other structures that can create a clamping and fixing effect. For scenarios requiring improved anti-loosening performance, the fastener 30 can also be used in conjunction with spring washers, anti-loosening nuts, locking washers, cotter pins, or threaded locking structures.

[0083] The diameters, clearances, and preload of the first, second, third, fourth, and fifth through holes, as well as the preload of the fastener 30, can be adjusted according to the weight of the accessory components, the dimensions of the mounting base 20, and the operating conditions.

[0084] The above technical solution, by setting interconnected first through holes, second through holes, third through holes, fourth through holes and fifth through holes, and by having the fastener 30 pass through the above through holes to fix the first part 221 and the second part 222 to the main longitudinal beam 10, can further improve the connection method and force path between the mounting base 20 and the main longitudinal beam 10 on the basis of the clamp-type connection structure and the internal support structure, thereby effectively improving the structural reliability of the local connection area of ​​the frame.

[0085] In some embodiments, the projections of the first through hole, the second through hole, the third through hole, the fourth through hole and the fifth through hole at least partially overlap in the same plane perpendicular to the second direction Y.

[0086] In some embodiments, the first portion 221 and the first wall 11, and the second portion 222 and the second wall 12 can still be welded together, while the fastener 30 further provides through-type clamping fixation. That is, the fastener 30 can be used as the main connection method or as an auxiliary reinforcement method to further improve the structural strength and overall reliability of the connection area.

[0087] In some embodiments, the support member 15 includes a main body 151, a first end portion 152, and a second end portion 153. The main body 151 abuts against a first wall 11 and a second wall 12. The first end portion 152 is connected to the end of the main body 151 near the first wall 11, and at least a portion of the first end portion 152 is disposed within a first through hole, abutting against a first portion 221. The second end portion 153 is connected to the end of the main body 151 near the second wall 12, and at least a portion of the second end portion 153 is disposed within a second through hole, abutting against a second portion 222.

[0088] The main body 151 forms a stable support between the first wall 11 and the second wall 12.

[0089] The first end portion 152 extends from the main body 151 toward the first wall 11 and can at least partially extend into the first through hole opened on the first wall 11. Since the first part 221 is located on the side of the first wall 11 facing away from the second wall 12, and the first part 221 is provided with a third through hole communicating with the first through hole, after the first end portion 152 is disposed in the first through hole, it can be positioned close to the first part 221 along the first through hole and form an abutment relationship with the first part 221. Therefore, the load borne by the first part 221 can be transmitted not only to the first wall 11, but also directly to the main body 151 through the first end portion 152.

[0090] The second end portion 153 extends from the main body 151 toward the second wall 12 and can at least partially extend into the second through hole opened on the second wall 12. Since the second part 222 is located on the side of the second wall 12 facing away from the first wall 11, and the second part 222 is provided with a fourth through hole communicating with the second through hole, the second end portion 153, after being disposed in the second through hole, can be positioned close to the second part 222 along the second through hole and form an abutment relationship with the second part 222. Therefore, the load borne by the second part 222 can be transmitted not only to the second wall 12, but also directly to the main body 151 through the second end portion 153.

[0091] The main body 151, the first end 152, and the second end 153 can together form an integrated support structure. The main body 151 primarily establishes an overall support relationship between the first wall 11 and the second wall 12, while the first end 152 and the second end 153 primarily provide more direct end support to the corresponding positions of the first part 221 and the second part 222. Thus, when the mounting base 20 supports the auxiliary components and is subjected to vibration loads, impact loads, and inertial loads, the loads acting on the main longitudinal beam 10 by the first part 221 and the second part 222 can be transferred more quickly to the interior of the support member 15 through the end abutment relationship, thereby improving the stress state of the connection area.

[0092] Thus, the above technical solution can further optimize the force transmission relationship between the mounting base 20 and the main longitudinal beam 10, improve the local structural strength and overall reliability of the connection area, thereby helping to improve the service life and operational stability of the frame under complex working conditions.

[0093] In some embodiments, the main body 151, the first end portion 152, and the second end portion 153 may be integrally formed, for example by stamping, bending, casting, or machining, to improve structural integrity.

[0094] In other embodiments, a split-and-connected form may also be adopted, for example, the first end 152 and the second end 153 may be welded, screwed, riveted or press-fitted to both ends of the main body 151, so as to facilitate processing and manufacturing and size adjustment.

[0095] In some embodiments, in the direction of the second direction Y and away from the main body 151, the cross-sectional area of ​​the first end 152 perpendicular to the second direction Y gradually decreases.

[0096] The first end portion 152 has a larger load-bearing cross section on the side closer to the main body portion 151, which can better withstand the load transmitted from the first part 221 and stably transfer the load to the main body portion 151, thereby improving the structural strength of the root region of the first end portion 152. The cross section of the end of the first end portion 152 away from the main body portion 151 is relatively small, which is conducive to the first end portion 152 extending into the first through hole and cooperating with the first part 221, improving the assembly adaptability between the first end portion 152 and the first through hole, reducing the possibility of interference at the edge of the through hole, and thus improving assembly efficiency.

[0097] In some embodiments, in the direction of the second direction Y and away from the main body 151, the cross-sectional area of ​​the second end 153 perpendicular to the second direction Y gradually decreases.

[0098] The second end portion 153 has a larger load-bearing cross section on the side closer to the main body portion 151, which can better withstand the load transmitted from the second part 222 and stably transfer the load to the main body portion 151, thereby improving the structural strength of the root region of the second end portion 153. The cross section of the end of the second end portion 153 away from the main body portion 151 is relatively small, which facilitates the insertion of the first end portion 152 into the second through hole and its cooperation with the second part 222, improving the assembly adaptability between the second end portion 153 and the second through hole, reducing the possibility of interference at the edge of the through hole, and thus improving assembly efficiency.

[0099] In some embodiments, the support member 15 is configured to be rotatably disposed relative to the main longitudinal beam 10, and the axis of rotation of the support member 15 is parallel to the second direction Y.

[0100] While bearing the supporting function, the support member 15 also has the ability to rotate relative to the main longitudinal beam 10, enabling it to participate in the dynamic stress process of the local area of ​​the main longitudinal beam 10.

[0101] Specifically, during the operation of mining vehicles, the main longitudinal beam 10 is usually subjected to vibration loads and dynamic impact loads from uneven road surfaces, gravel impacts, heavy-load operation, and braking conditions. Therefore, the main longitudinal beam 10 is prone to repeated alternating stress in local areas.

[0102] In this embodiment, by rotatably configuring the support member 15, when the main longitudinal beam 10 is subjected to repeated alternating forces, a portion of the force can be transmitted to the support member 15. The support member 15 can dissipate some vibration energy or impact energy through friction or structural damping during the rotation process relative to the main longitudinal beam 10. The instantaneous high stress borne by the local area of ​​the main longitudinal beam 10 can be reduced, thereby reducing the risk of local stress concentration in the area where the mounting seat 20 of the main longitudinal beam 10 is located, and thus further improving the reliability of the frame.

[0103] In some embodiments, the fixing member 30 is a cylindrical structure, and the support member 15 rotates around the fixing member 30, with the axis of the fixing member 30 coinciding with the axis of rotation of the support member 15.

[0104] Figure 5 for Figure 1 A magnified schematic diagram of the local structure at point F.

[0105] Continue to refer to Figure 5 In some embodiments, the frame further includes a mounting slat 40 extending along a first direction X. The mounting slat 40 has two fixing portions 41 located at opposite ends of the mounting slat 40 along the first direction X. The mounting slat 40 is connected to the main longitudinal beam 10 via the fixing portions 41. The mounting slat 40 has multiple mounting holes 42 spaced apart along the first direction X.

[0106] The mounting strip 40 can be set on the outer side of the main longitudinal beam 10, or it can be arranged on the inner side, upper side or lower side of the main longitudinal beam 10 according to the installation requirements of auxiliary components.

[0107] The mounting strip 40 is provided with two fixing parts 41, which are located at both ends of the mounting strip 40 along the first direction X. The mounting strip 40 is connected to the main longitudinal beam 10 through the fixing parts 41. That is to say, the mounting strip 40 is not welded or fixed to the main longitudinal beam 10 at multiple points along its entire length along the first direction X, but is connected to the main longitudinal beam 10 through the fixing parts 41 located at both ends.

[0108] Multiple mounting holes 42 on the mounting strip 40 provide mounting bases for other components. This allows the mounting strip 40 to provide mounting positions for accessories in different locations without significantly increasing the number of local welding points on the main longitudinal beam 10. Especially for small brackets, clamps, pipeline path fixing components 30, or other accessories that require multiple locations along the first direction X, the mounting strip 40 serves to unify the mounting interface.

[0109] Optionally, the mounting hole 42 can be a round hole, an oblong hole, a long oval hole, or other hole structures suitable for fasteners to pass through, in order to meet different installation tolerances and adjustment requirements.

[0110] Optionally, the mounting strip 40 can be a straight strip, or a strip with folded edges, a hat-shaped strip, a grooved strip, or a partially thickened strip.

[0111] Optionally, the mounting strip 40 can be made of high-strength steel, aluminum alloy or composite material to balance load-bearing strength and lightweight requirements.

[0112] The above technical solution, by setting mounting strips 40 extending along the first direction X on the frame, and connecting the mounting strips 40 to the main longitudinal beam 10 through a small number of fixing parts 41, and setting multiple mounting holes 42, can meet the needs of multi-position installation, reduce the number of welded threaded holes on the main longitudinal beam 10, prevent the generation of heat-affected zones in critical parts of the main longitudinal beam 10 and weaken the frame strength, thereby improving the overall reliability, structural stability and service life of the frame.

[0113] Figure 6 for Figure 1 A magnified schematic diagram of the local structure at point H. Figure 7 for Figure 6 A partial cross-sectional schematic diagram of the structure shown.

[0114] Continue to refer to Figure 6 and Figure 7 In some embodiments, the frame further includes a limiting member 50 connected to the main longitudinal beam 10. The limiting member 50 is used to limit the displacement of the cargo box of the mining vehicle along the second direction Y. The limiting member 50 includes a limiting body 51 and a guide portion 52. The guide portion 52 is connected to the end of the limiting body 51 along the third direction Z and close to the cargo box. The included angle between the side surface of the guide portion 52 facing away from the main longitudinal beam 10 and the side surface of the limiting body 51 facing away from the main longitudinal beam 10 is an obtuse angle.

[0115] When the cargo box is subjected to vibration, impact or inertial load during vehicle operation, the limiting member 50 can constrain the relative movement of the cargo box in the second direction Y, thereby preventing the cargo box from excessive lateral movement, offset or collision relative to the vehicle frame.

[0116] The limiting body 51 can serve as the main load-bearing structure of the limiting component 50, connecting with the main longitudinal beam 10 and bearing the limiting force from the cargo box. The guide part 52 is located at the end of the limiting body 51 near the cargo box, providing guidance and transition when the cargo box enters or exits the corresponding installation area.

[0117] For example, the limiting body 51 can be a block structure, a plate structure or a ribbed reinforced structure, and the guide part 52 can be a structure with an inclined surface formed by extending from the end of the limiting body 51.

[0118] The angle between the surface of the guide portion 52 facing away from the main longitudinal beam 10 and the surface of the limiting body 51 facing away from the main longitudinal beam 10 is an obtuse angle. That is, when the side of the limiting member 50 facing away from the main longitudinal beam 10 is considered the side that may contact or engage with the cargo box, the outer surface of the guide portion 52 and the outer surface of the limiting body 51 form a relatively gentle outward-spreading obtuse angle transition. With this arrangement, the guide portion 52 can form a relatively soft guiding surface when the cargo box approaches the limiting member 50, making it easier for the cargo box to be positioned and guided by the limiting member 50 during assembly, lowering, repositioning, or disassembly, and less likely to experience significant jamming or hard collisions with the limiting member 50.

[0119] The limiting component 50 can be directly welded to the main longitudinal beam 10, or it can be connected to the main longitudinal beam 10 by bolts, rivets, snap-fits, or by means of a transition connecting plate.

[0120] The above technical solution, by setting a limiting component 50 on the main longitudinal beam 10, can effectively limit the displacement of the cargo box along the second direction Y, while facilitating the entry and exit of the cargo box, reducing assembly jamming and collision risks, thereby improving the applicability, reliability and ease of use of the overall frame structure.

[0121] In some embodiments, the guide portion 52 may be integrally formed with the limiting body 51, for example, by bending, casting, forging or machining to form a continuous transition structure.

[0122] In other embodiments, the guide portion 52 may also be an independent guide member subsequently connected to the end of the limiting body 51, such as a welding ramp, guide block, or arc-shaped transition member.

[0123] In some embodiments, the surface of the limiting member 50 may also be provided with a wear-resistant layer, a buffer layer, or a low-friction coating. For example, a wear-resistant plate, a polymer buffer pad, or a surface treatment layer may be provided on the side of the guide portion 52 facing away from the main longitudinal beam 10 to reduce wear and collision noise when the cargo box repeatedly enters and exits.

[0124] In some embodiments, the main longitudinal beam 10 includes a first region and a second region, the stiffness of the first region is greater than that of the second region, and the limiting member 50 is connected to the first region.

[0125] For example, the first region and the second region can be divided according to different length segments of the main longitudinal beam 10 along the first direction X, wherein one or more segments are high-stiffness regions and another or more segments are relatively low-stiffness regions; the first region and the second region can also be divided according to the different local cross-sectional structures of the main longitudinal beam 10, for example, the position with a larger cross-section and more local reinforcement is defined as the first region, while the position with a smaller cross-section and less reinforcement is defined as the second region. As long as the stiffness of the first region is greater than that of the second region, and the installation position of the limiting member 50 is selected accordingly, the implementation requirements of this application can be met.

[0126] The first zone can be formed by increasing the wall thickness; the first zone can also be strengthened by setting up reinforcing plates, reinforcing ribs, support members 15, local reinforcement structures, or connecting with other components such as beams and supports.

[0127] The above technical solution achieves better stress distribution by placing the limiting member 50 in the first region of the main longitudinal beam 10 where the stiffness is relatively high. This allows the limiting member 50 to bear the force of the cargo box by relying on the structural region with higher stiffness.

[0128] In some embodiments, the limiting member 50 is detachably connected to the main longitudinal beam 10, and the frame also includes a gasket disposed between the limiting member 50 and the main longitudinal beam 10.

[0129] The above-mentioned technical solution can adjust the distance between the limiting component 50 and the main longitudinal beam 10 by using shims, thereby effectively solving the problem of mismatch between the limiting component 50 and the cargo box caused by structural errors. This not only helps to improve the assembly compatibility and limiting accuracy between the cargo box and the chassis, but also helps to improve the applicability of the chassis.

[0130] For example, thickness compensation can be achieved by selecting shims of different thicknesses; or it can be achieved by increasing or decreasing the number of shims.

[0131] Alternatively, the gasket can be a rectangular gasket, a strip gasket, or a block gasket, etc.

[0132] Figure 8 This is a front view structural diagram of a vehicle frame provided in some embodiments of this application. Figure 9 for Figure 8 A schematic diagram of a partial cross-sectional structure along AA. Figure 10 for Figure 9 A magnified schematic diagram of the structure at point L.

[0133] Continue to refer to Figures 8 to 10In some embodiments, the frame includes two main longitudinal beams 10, which are spaced apart along a second direction Y. The frame also includes a lifting crossbeam 60, which includes a beam body 61 and an axle head 62. The beam body 61 is connected between the two main longitudinal beams 10, and the axle head 62 is connected to both ends of the beam body 61 along the second direction Y, extending beyond the outer side of the main longitudinal beams 10. The axle head 62 includes a shaft portion 621 and a shoulder portion 622. The shaft portion 621 is used to connect with a lifting cylinder W, and the shoulder portion 622 protrudes from the outer peripheral surface of the shaft portion 621. The frame also includes a spacer 70, which is disposed on the side of the shoulder portion 622 facing the shaft portion 621. The spacer 70 abuts against the lifting cylinder W, and the stiffness of the spacer 70 is less than the stiffness of the axle head 62.

[0134] The two main longitudinal beams 10 are located on both sides of the frame along the second direction Y, thus together forming the load-bearing foundation of the frame.

[0135] Multiple transverse connection structures can be connected between the two main longitudinal beams 10 to improve the overall structural stability and load-bearing capacity of the frame. Among them, the lifting crossbeam 60 can be set between the two as an important load-bearing component for installing the lifting cylinder W.

[0136] The main beam 61 of the lifting beam 60 can be an integral beam structure or a segmented spliced ​​beam structure; it can be a round tube, a rectangular tube, an irregular closed beam, or a box beam formed by welding multiple plates.

[0137] Axle heads 62 are connected to both ends of the beam body 61 along the second direction Y, and extend beyond the outer side of the main longitudinal beam 10. In other words, each end of the beam body 61 is provided with an outwardly extending axle head 62, which can extend to the outer side of the corresponding main longitudinal beam 10, thereby forming an axial support part for the installation and connection of the lifting cylinder W. Since the axle heads 62 are located at both ends of the beam body 61 and extend beyond the outer side of the main longitudinal beam 10, the lifting cylinder W can be connected to the axle heads 62 in the outer area of ​​the frame to meet the installation and arrangement requirements of the cargo box lifting mechanism of the mining vehicle.

[0138] Furthermore, the shaft head 62 includes a shaft portion 621 and a shoulder portion 622. The shaft portion 621 is used to connect with the lifting cylinder W, and the shoulder portion 622 protrudes from the outer peripheral surface of the shaft portion 621. That is, the shaft portion 621 can form an axial connecting section for mounting the lifting cylinder W, and the connecting end of the lifting cylinder W can be sleeved, hinged, or fitted onto the shaft portion 621. The shoulder portion 622 can be formed in the root region of the shaft portion 621 or in the limiting region of the outer peripheral surface of the shaft portion 621, and the shoulder portion 622 protrudes radially outward relative to the outer peripheral surface of the shaft portion 621. By providing the shoulder portion 622, a stopping or positioning function can be formed when the lifting cylinder W is installed axially to limit excessive axial movement of the lifting cylinder W or its mounting components.

[0139] After the lifting cylinder W is installed on the shaft portion 621, the lifting cylinder W does not directly contact the shoulder portion 622. Instead, it preferably first contacts the spacer 70 disposed between the shoulder portion 622 and the lifting cylinder W. The spacer 70 can be fitted onto the outside of the shaft portion 621 and located on the side of the shoulder portion 622 facing the shaft portion 621, thereby forming an intermediate contact member between the shoulder portion 622 and the lifting cylinder W.

[0140] Because the stiffness of the spacer 70 is less than that of the shaft head 62, the spacer 70 has a more gentle stress-bearing characteristic compared to the shaft head 62. When the lifting cylinder W is installed and comes into contact with the spacer 70, the spacer 70 transmits the corresponding force to the shoulder 622. The spacer 70 can deform itself to make the stress distribution in the contact area more even to some extent. This reduces the risk of stress concentration caused by direct contact between the shoulder 622 and the lifting cylinder W.

[0141] Optionally, the shoulder 622 can be a structure such as an annular flange or a partial flange.

[0142] For example, the spacer 70 can be an annular sleeve fitted around the outer periphery of the shaft portion 621 and located between the shoulder portion 622 and the lifting cylinder W; the spacer 70 can also be a split semi-annular structure, etc.

[0143] The characteristic that the stiffness of the spacer 70 is less than that of the shaft head 62 can be achieved through material differences. For example, the shaft head 62 is made of high-strength steel, while the spacer 70 is made of metal, composite material, or engineering plastic material with relatively low stiffness. It can also be achieved through structural differences. For example, although the spacer 70 is made of similar material to the shaft head 62, it has a smaller wall thickness, a more flexible cross-sectional structure, and local buffer grooves or stress-reducing structures, thus exhibiting a lower overall stiffness than the shaft head 62.

[0144] The above technical solution, by introducing a spacer 70, can significantly improve the contact force relationship between the lifting cylinder W and the shoulder 622, reduce local stress concentration, and improve the overall reliability of the mining vehicle.

[0145] In some embodiments, the shaft head 62 may be integrally formed with the beam body 61, for example by integral machining, forging or casting.

[0146] In other embodiments, the shaft head 62 may also be an independent component subsequently connected to the end of the beam body 61, for example, by welding, press fitting, interference fit or screw connection.

[0147] In some embodiments, the shoulder 622 has a first surface on the side facing the shaft 621, and the first surface is connected to the outer peripheral surface of the shaft 621 by a first arc surface, and a gap S is provided between the spacer 70 and the first arc surface.

[0148] The first arc surface allows for a smoother, rounded transition at the junction of the shoulder 622 and the shaft 621, thus avoiding a noticeable geometric abrupt change at that point. This improves the stress distribution at the root region of the shoulder 622 when the shaft head 62 is subjected to the force transmitted by the lifting cylinder W.

[0149] Under the action of the lifting cylinder W, the spacer 70 can undergo certain elastic deformation, local compression deformation, or slight deformation. By setting a gap S between the spacer 70 and the first arc surface, the spacer 70 can have a certain deformation accommodation space after being subjected to force, reducing the risk of the spacer 70 being misaligned due to local squeezing. This allows the spacer 70 to maintain a relatively stable stress state during the transmission of contact load, further improving the reliability of the connection area between the lifting cylinder W and the shaft head 62.

[0150] In some embodiments, the shaft head 62 has a cavity 63 inside, and the cross-sectional area of ​​the cavity 63 perpendicular to the second direction Y and away from the beam body 61 gradually decreases.

[0151] For example, the cross-sectional area perpendicular to the second direction Y can be understood as the cross-sectional area formed by cutting the cavity 63 perpendicular to the second direction Y at any point along the extension path of the shaft head 62. The cross-sectional area of ​​the cavity 63 gradually decreases in the direction away from the beam body 61, which means that the end of the cavity 63 near the beam body 61 has a relatively large internal space, while the side near the outer end of the shaft head 62 has a relatively small internal space. This allows more material to be retained in the part of the shaft head 62 that is connected to the lifting cylinder W, thereby improving the structural strength of this area and reducing the impact on the connection stability between the shaft head 62 and the lifting cylinder W.

[0152] The axle head 62 of the above technical solution forms a tapered hollow cone structure inside, which can reduce the weight of the axle head 62 itself and reduce the impact on the connection stability between the axle head 62 and the lifting cylinder W, thereby taking into account both the lightweight and reliability of the frame.

[0153] In some embodiments, in the same plane parallel to the second direction Y, the orthographic projection of the cavity 63 at least partially overlaps with the orthographic projection of the main longitudinal beam 10.

[0154] During operation, the main longitudinal beam 10 of mining vehicles is usually subjected to vibration loads and dynamic impact loads from uneven road surfaces, gravel impacts, heavy-load operation, and braking conditions. Therefore, local areas of the main longitudinal beam 10 are prone to repeated alternating stress.

[0155] In this embodiment, by structurally corresponding the cavity 63 with the main longitudinal beam 10, the cavity 63 can participate in the response when the main longitudinal beam 10 is subjected to impact, thereby enabling the cavity 63 to absorb part of the vibration load of the main longitudinal beam 10, thus further improving the structural reliability of the main longitudinal beam 10.

[0156] In some embodiments, an arched structure 18 is provided on the main longitudinal beam 10, and the lifting crossbeam 60 is connected between the arched structures 18 of the two main longitudinal beams 10, which can improve the structural reliability of the lifting crossbeam 60.

[0157] In some embodiments, the frame further includes two main longitudinal beams 10, which are spaced apart along a second direction Y. A transverse connecting beam connects the two main longitudinal beams 10. A connecting tube seat is provided on the main longitudinal beam 10, and the transverse connecting beam is fixedly connected to the connecting tube seat. The connecting tube seat and the main longitudinal beam 10 are connected by rounded corners to reduce the risk of local stress concentration between the connecting tube seat and the main longitudinal beam 10, thereby improving the overall reliability of the frame.

[0158] In some embodiments, the connecting pipe seat and the main longitudinal beam 10 are integrally formed. On the one hand, compared with welding connection, the risk of cracking in the welding area can be reduced; on the other hand, it is convenient to set a rounded corner structure between the connecting pipe seat and the main longitudinal beam 10.

[0159] In some embodiments, the second walls 12 of the two main longitudinal beams 10 are arranged opposite each other along the second direction Y, and the connecting pipe is connected to the second walls 12.

[0160] In some embodiments, the second wall 12 and the connecting pipe seat are integrally formed.

[0161] In some embodiments, there are multiple transverse connecting beams, which are spaced apart along a first direction X.

[0162] In some embodiments, the transverse connecting beam extends along the second direction Y, and the projected shape of the transverse connecting beam along the second direction Y is circular.

[0163] In some embodiments, a first oil-gas spring seat is provided at the middle of the main longitudinal beam 10 along the first direction X, and a second oil-gas spring seat is provided at the rear of the main longitudinal beam 10 along the first direction X. The first oil-gas spring seat and the second oil-gas spring seat are used to install oil-gas springs.

[0164] In some embodiments, the frame further includes a frame body 80 connected to the main longitudinal beam 10, the frame body 80 being used to secure the engine. The frame body 80 includes a plurality of beams interconnected to form a frame structure, at least one of the beams being detachably connected to the main longitudinal beam 10.

[0165] When engine maintenance is required, the detachable beam connected to the main longitudinal beam 10 can be removed, making engine maintenance more convenient.

[0166] In some embodiments, the frame also includes a secondary longitudinal beam 90, which is connected to the end of the main longitudinal beam 10 along the first direction X. The secondary longitudinal beam 90 extends along the first direction X, and in the direction of the first direction X and away from the main longitudinal beam 10, the cross-sectional area of ​​the secondary longitudinal beam 90 perpendicular to the first direction X gradually decreases to optimize the overall weight of the frame.

[0167] In some embodiments, a bracket is provided on the main longitudinal beam 10. The bracket can be used to install batteries. The bracket includes a connecting plate, a base plate, and stiffening plates. The connecting plate is connected to the main longitudinal beam 10, the base plate is connected to one end of the connecting plate and intersects with the connecting plate, and the stiffening plates connect the base plate and the connecting plate. The stiffening plates can transfer the force of the base plate to the connecting plate, improving the reliability of the bracket.

[0168] Figure 11 This is a top view schematic diagram of a vehicle frame structure provided in some embodiments of this application. Figure 12 for Figure 11 A magnified schematic diagram of the structure at point M.

[0169] Continue to refer to Figures 11 to 12 In some embodiments, the frame also includes a steering seat 100 and a central control arm 110. The central control arm 110 is movably connected to the steering seat 100. A stop 120 is provided on the steering seat 100. The stop 120 is used to contact the central control arm 110 to limit the movement of the central control arm 110. The elastic modulus of the stop 120 is less than that of the steering seat 100 to reduce the risk of damage caused by direct rigid contact between the steering seat 100 and the central control arm 110.

[0170] In some embodiments, the blocking member 120 is detachably connected to the steering seat 100, and an adjustment piece is provided between the blocking member 120 and the steering seat 100. The position of the blocking member 120 can be adjusted by setting adjustment pieces of different thicknesses.

[0171] Figure 13 for Figure 8 A schematic diagram of a partial cross-sectional structure along BB. Figure 14 for Figure 13 A magnified schematic diagram of the structure at point N.

[0172] Continue to refer to Figures 13 to 14In some embodiments, the frame further includes a cargo box support 130 and a support limiting seat 140. The support limiting seat 140 is connected to the main longitudinal beam 10, and a clearance groove 150 is provided on the support limiting seat 140 to avoid welds on the main longitudinal beam 10, reducing the risk of interference between the support limiting seat 140 and the welds on the main longitudinal beam 10. The cargo box support 130 is connected to the support limiting seat 140, and the cargo box safety support is used to provide physical support after the cargo box is lifted, preventing safety problems caused by the failure of the lifting cylinder W.

[0173] According to some embodiments of this application, this application also provides a mining vehicle, which includes the chassis of any of the above embodiments.

[0174] Unless otherwise specified, all embodiments and optional embodiments of this application can be combined to form new technical solutions. All technical features and optional technical features of this application can be combined to form new technical solutions.

[0175] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application 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. These 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 application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A vehicle frame, characterized in that, The chassis is used in mining vehicles, and the chassis includes: A main longitudinal beam extends along a first direction. The main longitudinal beam includes a first wall, a second wall, and a third wall. The first wall and the second wall are arranged opposite each other along a second direction. The third wall is located on one side of the main longitudinal beam along a third direction. The third wall connects the first wall and the second wall. The first direction, the second direction, and the third direction intersect each other. The mounting base includes a support and a connector. The support is connected to the connector and is used to support an accessory component. The connector includes a first part, a second part, and a third part. The third part is connected between the first part and the second part. The first part is connected to the side of the first wall facing away from the second wall. The second part is connected to the side of the second wall facing away from the first wall. The third part is connected to the outside of the third wall.

2. The frame according to claim 1, characterized in that, The main longitudinal beam also includes a support member, which is connected between the first wall and the second wall. In the same plane perpendicular to the second direction, the projections of the support, the first part, and the second part at least partially overlap.

3. The frame according to claim 2, characterized in that, The first wall has a first through hole that penetrates the first wall along the second direction, and the second wall has a second through hole that penetrates the second wall along the second direction. The first part has a third through hole, which penetrates the first part along the second direction; the second part has a fourth through hole, which penetrates the second part along the second direction. The support member has a fifth through hole, which penetrates the support member along the second direction. The first through hole, the second through hole, the third through hole, the fourth through hole, and the fifth through hole are interconnected. The frame also includes a fastener that passes through the first through hole, the second through hole, the third through hole, the fourth through hole, and the fifth through hole, and fixes the first part and the second part to the main longitudinal beam.

4. The frame according to claim 3, characterized in that, The support member includes a main body, a first end, and a second end, wherein the main body abuts between the first wall and the second wall; The first end is connected to one end of the main body near the first wall, and at least a portion of the first end is disposed in the first through hole, with the first end abutting against the first portion; The second end is connected to one end of the main body near the second wall, and at least a portion of the second end is disposed in the second through hole, with the second end abutting against the second portion.

5. The frame according to claim 1, characterized in that, The frame also includes a mounting strip that extends along the first direction. The mounting strip has two fixing parts located at both ends of the mounting strip along the first direction. The mounting strip is connected to the main longitudinal beam through the fixing parts. The mounting strip has multiple mounting holes, which are spaced apart along the first direction.

6. The frame according to claim 1, characterized in that, The frame also includes a limiting member connected to the main longitudinal beam, which is used to limit the displacement of the cargo box of the mining vehicle along the second direction. The limiting component includes a limiting body and a guide portion. The guide portion is connected to one end of the limiting body along the third direction and close to the cargo box. The angle between the side surface of the guide portion facing away from the main longitudinal beam and the side surface of the limiting body facing away from the main longitudinal beam is an obtuse angle.

7. The frame according to claim 1, characterized in that, The frame includes two main longitudinal beams, which are spaced apart along the second direction; The frame also includes a lifting crossbeam, which includes a beam body and an axle head. The beam body is connected between two main longitudinal beams, and the axle head is connected to both ends of the beam body along the second direction, and the axle head extends out of the outside of the main longitudinal beams. The shaft head includes a shaft portion and a shoulder, the shaft portion being used to connect with a lifting cylinder, and the shoulder portion protruding from the outer peripheral surface of the shaft portion; The frame also includes a spacer, which is disposed on the side of the shoulder facing the axle. The spacer is used to abut against the lifting cylinder, and the stiffness of the spacer is less than that of the axle head.

8. The frame according to claim 7, characterized in that, The shoulder has a first surface on the side facing the shaft, and the first surface is connected to the outer peripheral surface of the shaft by a first arc surface, and a gap is provided between the spacer and the first arc surface.

9. The frame according to claim 7, characterized in that, The shaft head has a cavity inside, and in the second direction and away from the beam body, the cross-sectional area of ​​the cavity perpendicular to the second direction gradually decreases.

10. A mining vehicle, characterized in that, Includes the frame as described in any one of claims 1-9.

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