Applicable to off-road mining vehicle frames and off-road mining vehicles with multiple power sources

Abstract

The utility model discloses a frame for an off-road mining vehicle suitable for multiple power sources, including two longitudinal beams and a bumper, a front axle ring beam assembly, a support beam support, a lifting beam assembly, a middle axle cross beam assembly, and a rear axle cross beam assembly, which are sequentially arranged on the two longitudinal beams from front to rear. The front axle ring beam assembly and the lifting beam assembly are both located below the two longitudinal beams. The front axle ring beam assembly is also bolted with an upper curved beam to form an annular structure. The lifting beam assembly is also bolted with a welded cross beam to form an annular structure. The upper curved beam is located between or above the two longitudinal beams, and the welded cross beam is located between the two longitudinal beams. The utility model also discloses an off-road mining vehicle suitable for multiple power sources. The utility model adopts an assembled structure to form an open space, which can be used for the adaptability development of a multiple power source system, improve the versatility and expansibility of the frame, and greatly improve the overall strength and rigidity of the frame.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering machinery and transport machinery, and more specifically, to an off-road mining vehicle frame and an off-road mining vehicle suitable for multiple power sources. Background Art

[0002] Off-road mining vehicles are key transportation equipment in open-pit coal mines, metal and non-metal mines, water conservancy and hydropower, and large-scale engineering mining and construction. At this stage, with the development of new energy infiltrating the field of off-road mining vehicles, existing off-road mining vehicles have basically formed a single or mixed operation of multiple power source models such as fuel, hybrid, and pure electric. The requirements for the frame are mainly reflected in the high layout space requirements. For example, in addition to assembling the engine and gearbox, hybrid models also need to assemble batteries, motors, controllers and other new components. However, due to the design of the frame platform and the requirements for maintainability, the frame of off-road mining vehicles suitable for multiple power sources has not formed a universal structure. For example, the invention patent with application number 202011174847.3 discloses a dump truck frame and a dump truck, which consists of six cross beams and two longitudinal beams to form an integral box-section welded frame, which improves the frame strength, but because the front lower gantry beam, the second cross beam and other structures are welded to the frame, the space is not flexible and cannot be well applied to hybrid models. How to expand the application scope of off-road mining vehicle frames while overcoming the significant reduction in frame strength and reliability of existing frames under large tonnage loads and high-frequency impact loads is a technical problem that needs to be urgently solved in this application. Summary of the invention

[0003] The utility model provides an off-road mining vehicle frame and an off-road mining vehicle suitable for multiple power sources, which adopt an assembled structure to form an open space, can carry out adaptability development of multiple power source systems, improve the versatility and expandability of the frame, and at the same time greatly improve the overall strength and rigidity of the frame.

[0004] In order to achieve these purposes and other advantages according to the utility model, a non-road mining vehicle frame suitable for multiple power sources is provided, including two longitudinal beams and a bumper, a front axle ring beam assembly, a support beam support, a lifting beam assembly, a middle axle cross beam assembly, and a rear axle cross beam assembly arranged on the two longitudinal beams from front to rear, the front axle ring beam assembly and the lifting beam assembly are both located below the two longitudinal beams, the front axle ring beam assembly is also assembled with an upper curved beam by bolts to form an annular structure, the lifting beam assembly is also assembled with a welded cross beam by bolts to form an annular structure, the upper curved beam is located between or above the two longitudinal beams, and the welded cross beam is located between the two longitudinal beams.

[0005] Preferably, the longitudinal beams include a front longitudinal beam, a middle longitudinal beam, and a rear longitudinal beam, all of which are box-type structures, and the box-type structure includes an upper wing panel, a lower wing panel, an outer web panel, an inner web panel, and reinforcing ribs formed by welding.

[0006] Preferably, the front axle ring beam assembly includes a front axle right steel casting, a front axle cross beam, and a front axle left steel casting which are welded together. The front axle right steel casting and the front axle left steel casting are structures having welding positions of the front longitudinal beam end face, the middle longitudinal beam end face, the upper curved beam end face, and the front axle cross beam end face, and the positions of the plate welds of the front longitudinal beam end face and the middle longitudinal beam end face are staggered.

[0007] Preferably, the center bridge crossbeam assembly includes a center bridge right steel casting, a center bridge tubular beam, and a center bridge left steel casting which are welded together. The center bridge right steel casting and the center bridge left steel casting are structures with welding positions of each plate of the center longitudinal beam, each plate of the rear longitudinal beam, and the end face of the center bridge tubular beam. The center bridge right steel casting, the center bridge left steel casting, the upper wing plate of the center longitudinal beam, and the upper wing plate of the rear longitudinal beam are lap-welded structures. The center bridge right steel casting, the center bridge left steel casting, and the weld positions of each plate of the center longitudinal beam and the rear longitudinal beam are staggered.

[0008] Preferably, the rear axle crossbeam assembly includes a rear axle right steel casting, a rear axle tubular beam, and a rear axle left steel casting which are welded together. The rear axle right steel casting and the rear axle left steel casting are structures having welding positions of the rear longitudinal beam end face and the rear axle tubular beam end face, and the weld positions of each plate of the rear longitudinal beam end face are staggered.

[0009] Preferably, the upper curved beam is a box-type structure of multiple plate parts welded together, which is installed between the right steel casting of the front axle and the left steel casting of the front axle, and the welded cross beam is a box-type structure of a rectangular tube and two end plates welded together, which is installed on the inner side of a pair of center longitudinal beams.

[0010] The invention is applicable to an off-road mining vehicle with multiple power sources, and comprises the off-road mining vehicle frame.

[0011] The utility model at least has the following beneficial effects:

[0012] First, the utility model adopts assembled upper curved beams and welded cross beams, and an open space is formed in the front and middle abdomen of the frame, which can be used for the adaptive development of multiple power source systems, improves the versatility and expandability of the rigid frame platform, shortens the forward development cycle and saves costs, and further improves the product cost performance.

[0013] Second, the frame of the utility model is formed by staggered welding of multi-segment longitudinal beams, steel castings and box beam structural plates, which greatly improves the overall strength and rigidity of the frame, and the complex load-bearing structure improves the reliability and service life of the rigid frame.

[0014] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a technical solution of the utility model;

[0016] Figure 2 It is a schematic diagram of the structural decomposition of the rear longitudinal beam of the utility model;

[0017] Figure 3 It is a schematic diagram of the structural decomposition of the front axle ring beam assembly described in the utility model;

[0018] Figure 4 It is a schematic diagram of the structural decomposition of the middle bridge crossbeam assembly described in the utility model;

[0019] Figure 5 It is a schematic diagram of the structural decomposition of the rear axle crossbeam assembly described in the utility model. DETAILED DESCRIPTION

[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0021] It should be understood that terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or more other elements or combinations thereof.

[0022] It should be noted that the experimental methods described in the following embodiments are conventional methods unless otherwise specified, and the reagents and materials can be obtained from commercial sources unless otherwise specified; in the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected, set, or detachably connected, set, or connected and set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood in specific circumstances. The orientation or position relationship indicated by the terms "transverse", "longitudinal", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.

[0023] like Figure 1As shown, the utility model provides a non-road mining vehicle frame suitable for multiple power sources, including two longitudinal beams and a bumper 1, a front axle ring beam assembly 3, a support beam support 5, a lifting beam assembly 7, a middle axle cross beam assembly 9, and a rear axle cross beam assembly 11, which are sequentially arranged on the two longitudinal beams from front to rear. The front axle ring beam assembly 3 and the lifting beam assembly 7 are both located below the two longitudinal beams. The front axle ring beam assembly 3 is also bolted with an upper curved beam 4 to form an annular structure. The lifting beam assembly 7 is also bolted with a welded cross beam 6 to form an annular structure. The upper curved beam 4 is located between or above the two longitudinal beams, and the welded cross beam 6 is located between the two longitudinal beams. The upper curved beam 4 and the welded cross beam 6 are assembled by bolt connection, and the remaining components are welded, which is convenient for hoisting and maintenance of the power system while also enhancing the local strength and torsional stiffness of the frame, and is also convenient for the adaptability development of the multi-power source system to improve the versatility and expansibility of the rigid frame platform. The front axle ring beam assembly 3, the middle axle cross beam assembly 9, and the rear axle cross beam assembly 11 all adopt a casting-weldment welding structure to improve the load-bearing capacity of the rigid frame in the complex load-bearing area. The front axle ring beam assembly 3 and the upper curved beam 4 form a closed annular structure, which not only has good impact resistance under the impact of the complex load of the front axle, but also has good bending and torsion resistance, thereby greatly improving the service life of the rigid frame. The lifting beam assembly 7 and the welded cross beam 6 partially form an annular structure, which improves the local strength and torsional stiffness of the rigid frame, and can effectively reduce the fatigue effect on the rigid frame during the loading and unloading of cargo box materials.

[0024] In the above technical solution, the bumper 1 is located at the front end of the rigid frame, and is used for the assembly of the front panel assembly and physical collision protection on the front side of the vehicle. The front axle ring beam assembly 3 is located directly above the front axle of the vehicle, and is used for the installation and positioning of the front axle of the vehicle and the bearing of the front axle load of the whole vehicle. The upper curved beam 4 is located above the front axle ring beam assembly 3, and is assembled and connected by bolts, which is convenient for the hoisting and maintenance of the power system of the whole vehicle, and strengthens the local strength and torsional stiffness of the frame. The support beam support 5 is composed of a bent plate and a rib plate welded together, which is welded on both sides of the longitudinal beam. It is convenient for the installation of the support beam through bolt connection, and can be adaptively used according to the power source. For example, a conventional crossbeam or a battery pack assembly can be assembled on the support beam support 5, which greatly improves the versatility and expandability of the rigid frame platform. The welded crossbeam 6 is connected to the middle of the inner side of the longitudinal beam by bolts, which is convenient for the hoisting and maintenance of the power system, and can also improve the torsional resistance of the rigid frame. The lifting beam assembly 7 adopts a large arc box steel plate structure combined with a tubular beam plug-in splicing on both sides, which can effectively improve the welding positioning efficiency. The lifting crossbeam assembly is welded on the lower side of the longitudinal beam and is used for telescopic support of the lifting cylinder to realize the loading and unloading of materials in the cargo box. When loading and unloading materials in the cargo box, it can provide sufficient bending stiffness for the rigid frame. The cylinder supports at both ends of the lifting beam assembly 7 adopt a high-alloy forging structure to improve the local structural strength and wear resistance. The middle bridge crossbeam assembly 9 is located directly above the middle bridge of the vehicle, and is used for the installation and positioning of the middle bridge of the vehicle and the bearing of the middle bridge load of the whole vehicle. The rear axle crossbeam assembly 11 is located directly above the rear axle of the vehicle, and is used for the installation and positioning of the rear axle of the vehicle and the bearing of the rear axle load of the whole vehicle.

[0025] Cast steel parts are used in the load-bearing areas of the front axle ring beam assembly 3, the middle axle cross beam assembly 9, and the rear axle cross beam assembly 11 to improve the bearing capacity of complex loads. The assembled upper curved beam 4 and welded cross beam 6 are used to form an open space in the front middle section of the rigid frame. The adaptive development of the multi-power source system can be carried out on the basis of the rigid frame universal structural platform, thereby greatly shortening the product forward development cycle and improving the product cost performance. At the same time, the detachable upper curved beam 4 and welded cross beam 6 greatly improve the production efficiency and maintenance convenience during the production, lifting and maintenance of the power system. Furthermore, the support beam support 5 welded on both sides of the middle longitudinal beam 8 can be used adaptively according to the power source, such as assembling conventional cross beams or battery packs, etc., which better improves the versatility and expandability of the rigid frame platform. In summary, the utility model can meet the high reliability and long life requirements of off-road mining vehicles under complex working conditions, and can also meet the adaptability development needs of multi-power source systems.

[0026] In another technical solution, Figure 2As shown, the longitudinal beams include a front longitudinal beam 2, a middle longitudinal beam 8, and a rear longitudinal beam 10, which are all box-type structures. The front longitudinal beam 2, the middle longitudinal beam 8 and the rear longitudinal beam 10 have the same structure and are symmetrically distributed in the rigid frame to form the main frame of the rigid frame structure. The plate weldments are welded into a box-type section. The box-type structure includes an upper wing panel 101, a lower wing panel 101, an outer web 102, an inner web 103, and a reinforcing rib 104 formed by welding. The box-type welded structure is simple and reliable, and can improve the overall strength and torsional and bending resistance of the rigid frame. The upper wing plate 101, the lower wing plate 105, the outer web plate 102, and the inner web plate 103 are staggered, that is, the upper wing plate 101 and the lower wing plate 105 are arranged front and back, and the outer web plate 102 and the inner web plate 103 are arranged front and back, which can effectively reduce the influence of the heat-affected zone on the welding quality when the longitudinal beam and the front axle ring beam assembly 3, the middle axle cross beam assembly 9, and the rear axle cross beam assembly 11 are welded, and the forming quality of the different surface welds is improved. The process pad is eliminated to simplify the welding process. The plate weldment is split into small assemblies, and the welding process is carried out in sequence and sections. The positioning of the tooling is used to reduce the manufacturing difficulty, improve the production efficiency, and is suitable for mass production.

[0027] In another technical solution, Figure 3 As shown, the front axle ring beam assembly 3 includes a front axle right steel casting 301, a front axle cross beam 302, and a front axle left steel casting 303 which are welded together. The front axle right steel casting 301 and the front axle left steel casting 303 are structures with welding positions of the end faces of the front longitudinal beam 2, the middle longitudinal beam 8, the upper curved beam 4, and the front axle cross beam 302. A casting-plate welding structure is adopted, and steel castings are used in the bridge load-bearing parts to improve the bearing performance of the frame as a whole under impact load. The positions of the welds of each plate at the end faces of the front longitudinal beam 2 and the middle longitudinal beam 8 are staggered. The joints of the front axle ring beam assembly 3 with the front longitudinal beam 2, the middle longitudinal beam 8, and the rear longitudinal beam 10 adopt an overlap staggered structure, which can improve the forming quality of the welds at the joints, so that the rigid frame has better structural strength and rigidity.

[0028] In another technical solution, Figure 4As shown, the middle bridge crossbeam assembly 9 includes a middle bridge right steel casting 901, a middle bridge tube beam 902, and a middle bridge left steel casting 903 which are welded together. The middle bridge right steel casting 901 and the middle bridge left steel casting 903 are both structures with welding positions of the plates of the middle longitudinal beam 8, the plates of the rear longitudinal beam 10, and the end faces of the middle bridge tube beam 902. A casting-plate welding structure is adopted, and steel castings are used in the bridge load-bearing parts to improve the bearing performance of the overall frame under impact loads. The middle bridge tube beam 902 is welded with round tube beams, which can greatly improve the torsional stiffness of the middle section of the rigid frame and reduce local stress concentration. The right steel casting 901 of the middle bridge, the left steel casting 903 of the middle bridge, the upper wing plate 101 of the middle longitudinal beam 8, and the upper wing plate 101 of the rear longitudinal beam 10 are lap-welded structures. The welds of the right steel casting 901 of the middle bridge, the left steel casting 903 of the middle bridge, the middle longitudinal beam 8, and the rear longitudinal beam 10 are staggered. The lap-staggered structure is adopted at the joints of the middle bridge crossbeam assembly 9 and the front longitudinal beam 2, the middle longitudinal beam 8, and the rear longitudinal beam 10, which can improve the forming quality of the welds at the joints, so that the rigid frame has better structural strength and rigidity, thereby improving the reliability and service life of the entire frame.

[0029] In another technical solution, Figure 5 As shown, the rear axle cross beam assembly 11 includes a rear axle right steel casting 111, a rear axle tube beam 112, and a rear axle left steel casting 113, which are welded together. The rear axle right steel casting 111 and the rear axle left steel casting 113 are structures with welding positions of the end faces of the rear longitudinal beam 10 and the end faces of the rear axle tube beam 112. The casting-plate welding structure is adopted, and steel castings are used in the bridge load bearing part to improve the bearing performance of the frame as a whole under impact load. The rear axle tube beam 112 is welded with a round tube beam, which can greatly improve the torsional rigidity of the rigid frame tail section and reduce local stress concentration. The weld positions of the plates on the end faces of the rear longitudinal beam 10 are staggered, and the overlap staggered structure is adopted at the splicing of the rear axle cross beam assembly 11 and the front longitudinal beam 2, the middle longitudinal beam 8, and the rear longitudinal beam 10, which can improve the forming quality of the weld at the splicing, so that the rigid frame has better structural strength and rigidity, thereby improving the reliability and service life of the entire frame.

[0030] In another technical solution, the upper curved beam 4 is a box-type structure welded by multiple plates, which is assembled between the right steel casting 301 and the left steel casting 303 of the front axle by bolts. It can be disassembled during production, hoisting, and maintenance of the power system, which greatly improves production efficiency and maintenance convenience. The welded crossbeam 6 is a box-type structure welded by a rectangular tube and steel plates at both ends, which is assembled on the inner side of a pair of center longitudinal beams 8 by bolts. It can be disassembled during production, hoisting, and maintenance of the power system, which greatly improves production efficiency and maintenance convenience. The plate welded parts are split into small assemblies, welded and processed in sequence and sections, and positioned by tooling to reduce manufacturing difficulty, improve production efficiency, and are suitable for mass production.

[0031] Off-road mining vehicles suitable for multiple power sources are transportation equipment with heavy load-bearing capacity, multiple loading and unloading, and short transportation distance. They include the off-road mining vehicle frame. The rigid frame is the main structural frame of the dump truck product, taking into account the mounting and expansion of electromechanical and hydraulic modules. Under high load and alternating load, it has good reliability and service life.

[0032] The number of devices and processing scales described here are used to simplify the description of the utility model. Applications, modifications and variations of the utility model are obvious to those skilled in the art.

[0033] Although the implementation scheme of the utility model has been disclosed as above, it is not limited to the applications listed in the specification and implementation modes. It can be fully applied to various fields suitable for the utility model. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. Suitable for off-road mining vehicle frame with multiple power sources, characterized by: The vehicle comprises two longitudinal beams and a bumper, a front axle ring beam assembly, a support beam mount, a lifting beam assembly, a middle axle cross beam assembly and a rear axle cross beam assembly which are sequentially arranged on the two longitudinal beams from front to rear. The front axle ring beam assembly and the lifting beam assembly are both located below the two longitudinal beams. The front axle ring beam assembly is also assembled with an upper curved beam by bolts to form a ring structure. The lifting beam assembly is also assembled with a welded cross beam by bolts to form a ring structure. The upper curved beam is located between or above the two longitudinal beams, and the welded cross beam is located between the two longitudinal beams.

2. The off-road mining vehicle frame suitable for multiple power sources as claimed in claim 1, characterized in that: The longitudinal beams include a front longitudinal beam, a middle longitudinal beam, and a rear longitudinal beam, all of which are box-type structures. The box-type structure includes an upper wing plate, a lower wing plate, an outer web plate, an inner web plate, and reinforcing ribs formed by welding.

3. The off-road mining vehicle frame suitable for multiple power sources as claimed in claim 2, characterized in that: The front axle ring beam assembly includes a front axle right cast steel part, a front axle cross beam, and a front axle left cast steel part which are welded together. The front axle right cast steel part and the front axle left cast steel part are structures with welding positions of the front longitudinal beam end face, the middle longitudinal beam end face, the upper curved beam end face, and the front axle cross beam end face. The positions of the welds of each plate on the front longitudinal beam end face and the middle longitudinal beam end face are staggered.

4. The off-road mining vehicle frame suitable for multiple power sources as claimed in claim 2, characterized in that: The center bridge crossbeam assembly includes a center bridge right steel casting, a center bridge tubular beam, and a center bridge left steel casting which are welded together. The center bridge right steel casting and the center bridge left steel casting are structures with welding positions of each plate of the center longitudinal beam, each plate of the rear longitudinal beam, and the end face of the center bridge tubular beam. The center bridge right steel casting, the center bridge left steel casting, the upper wing plate of the center longitudinal beam, and the upper wing plate of the rear longitudinal beam are lap-welded structures. The center bridge right steel casting, the center bridge left steel casting, and the weld positions of each plate of the center longitudinal beam and the rear longitudinal beam are staggered.

5. The off-road mining vehicle frame suitable for multiple power sources as claimed in claim 2, characterized in that: The rear axle crossbeam assembly includes a rear axle right steel casting, a rear axle tube beam, and a rear axle left steel casting which are welded together. The rear axle right steel casting and the rear axle left steel casting are both structures with welding positions of the rear longitudinal beam end face and the rear axle tube beam end face, and the weld positions of each plate body of the rear longitudinal beam end face are staggered.

6. The off-road mining vehicle frame suitable for multiple power sources as claimed in claim 2, characterized in that: The upper curved beam is a box-type structure welded from multiple plates, which is installed between the right steel casting of the front axle and the left steel casting of the front axle. The welded cross beam is a box-type structure welded from a rectangular tube and two end plates, which is installed on the inner side of a pair of center longitudinal beams.

7. An off-road mining vehicle suitable for multiple power sources, comprising the off-road mining vehicle frame as described in any one of claims 1 to 6.

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