Lengthened beam of mining dump truck and mining dump truck

Abstract

The invention discloses a mining dump truck lengthened beam and a mining dump truck, relates to the technical field of mining dump truck frame components, and aims at solving the problems that an existing mining dump truck is complex in front supporting structure, single in component function, difficult to assemble and not matched in size. The lengthened beam comprises a supporting flange plate connected with a front support of the dumper, a main supporting plate vertically arranged on the supporting flange plate, and a cab support, a platform support, a pipeline fixing assembly, a fender fixing support, a lamp mounting bracket, a covering plate, an escalator support, a loudspeaker support and an air filter support assembly which are integrated on the main supporting plate, all the components are connected through welding or bolts to form an integrated supporting structure. According to the front structure of the mining dump truck, integration of multiple functions such as platform supporting, escalator and cab fixing and electric accessory mounting is achieved, the structure is simplified, meanwhile, the bearing strength and reliability are improved, the manufacturing cost is reduced, the front structure is adaptive to complex working conditions of a mining area, and functionality, safety and attractiveness of the front structure of the mining dump truck are effectively guaranteed.

Description

Technical Field

[0001] This invention relates to the technical field of mining dump truck frame components, specifically to an extended beam for a mining dump truck and a mining dump truck itself. It belongs to the technical direction of the front support structure of mining dump truck frames, and is particularly suitable for the design and application of multi-functional integrated support components for the front of mining dump truck frames in large-scale heavy-duty operation scenarios such as open-pit mines and water conservancy and hydropower projects. Background Technology

[0002] Mining dump trucks are core transportation equipment in large-scale operations such as open-pit mines and water conservancy and hydropower projects. They need to operate for extended periods on rugged roads, under heavy loads, and in adverse weather conditions. The strength, functionality, and ease of assembly of the front support structure of the chassis directly affect the overall operating efficiency and safety of the vehicle. Among them, the extended beam of the mining dump truck, as the key outer component of the main support of the front beam of the chassis, undertakes three core functions: first, it supports both ends of the platform, ensuring the stable placement of workers and equipment; second, it fixes key structures such as ladders and the cab, ensuring the safety of personnel getting on and off and driving operations; and third, it installs electrical accessories such as headlights, cameras, and speakers to meet the lighting, monitoring, and signal transmission needs of the work site.

[0003] However, the existing extended front beam and supporting structure of mining dump trucks have obvious technical defects: 1) Dispersed and complex structure: Functional components such as cab support, platform support, and lamp bracket are not integrated into the same extended beam structure. Some supports need to be fixed separately to the platform or other areas of the frame, resulting in a large number of components and scattered installation points, which increases the structural complexity of the front of the frame.

[0004] 2) Low assembly efficiency and size mismatch: The scattered parts need to be welded or bolted together separately. Not only is the welding process cumbersome and the installation difficult, but the inconsistent design benchmarks of each part can also lead to assembly size deviations. This can result in problems such as inaccurate alignment of the cab and ladder when they are installed on the vehicle and angle deviation of the lights after installation, which directly affects the overall functionality and aesthetics.

[0005] 3) Single function and insufficient reliability: Each component only performs a single function (such as an independent lamp bracket is only used to install lamps), without forming functional synergy. In addition, the dispersed structure has many connection nodes, which can easily lead to weld cracking or bolt loosening under heavy load and bumpy working conditions in the mining area, reducing the overall safety and service life of the support structure.

[0006] To address the shortcomings of the existing technologies, there is an urgent need to design an integrated, high-strength extended beam for mining dump trucks. This beam simplifies the structure through functional integration, solves assembly challenges, and simultaneously meets the strength and reliability requirements of the front support structure for mining dump trucks. Summary of the Invention

[0007] The aim is to address the technical pain points of existing mining dump truck front support structures, such as "dispersed and complex structure, single function, difficult assembly, size mismatch and insufficient reliability", and to provide a mining dump truck with an extended beam and a mining dump truck to solve the above problems.

[0008] To achieve the above objectives, the technical solution adopted by the present invention is: an extended beam for a mining dump truck, comprising: a support flange plate, a main support plate, and a cover plate. The support flange plate is disposed at one end of the cover plate, and the cover plate covers the front side of the main support plate and the other end opposite to the support flange plate. The main support plate and the cover plate are provided with several connecting parts for installing components.

[0009] Furthermore, the plurality of connecting components include: platform support, cab support, lamp mounting bracket, pipeline fixing assembly, mudguard fixing support, ladder support, air filter support assembly, lamp mounting hole, and speaker support.

[0010] Furthermore, the main support plate is groove-shaped, and the cover plate is L-shaped. The long side of the cover plate is located on the side of the main support plate with a groove along its length, and the short side of the cover plate and the support flange plate are respectively fixed to both ends of the main support plate. Platform supports, cab supports, lamp mounting brackets, pipeline fixing components, and mudguard fixing supports are mounted on the main support plate; air filter support components, ladder supports, lamp mounting holes, and speaker supports are mounted on the cover plate.

[0011] Furthermore, the cab support includes: a fixing plate, a mounting plate, and a support flange plate. The fixing plate is mounted on the main support plate, the mounting plate is vertically mounted on the fixing plate, and the support flange plate is mounted on the mounting plate for mounting the cab and its shock absorbers.

[0012] Furthermore, the cab support is located at the rear corner of the main support plate, and the fixing plate in the cab support has a folded edge corresponding to the corner of the main support plate. The shape of the folded edge on the fixing plate is the same as the shape of the corner of the main support plate. The mounting plate of the cab support has folded edges on both sides to increase the stability of the mounting plate on the fixing plate.

[0013] Furthermore, the pipeline fixing assembly includes: a fixing bracket, a U-shaped support, and a U-shaped bolt. One side of the fixing bracket is connected to the main support plate, and the other side is connected to the fixing U-shaped bolt. The U-shaped support is slidably mounted on the U-shaped bolt. The air intake pipe that needs to be fixed passes through the U-shaped bolt and the U-shaped support. By adjusting the fastening nut on the U-shaped bolt, the air intake pipe is fastened between the U-shaped bolt and the U-shaped support to achieve fixing.

[0014] Furthermore, the air filter support assembly includes: a right side plate of the air filter, a left side plate of the air filter, a cover plate, a front plate, plate fastening bolts, and air filter mounting holes. The right side plate and the left side plate of the air filter are connected to the front plate by plate fastening bolts. The cover plate is located above the front plate and is snapped onto the right side plate and the left side plate of the air filter, achieving dustproof and waterproof functions with a simple and beautiful structure. The front plate is provided with a semi-circular opening that matches the outer contour of the air filter end face, facilitating the opening of the outer end cover of the air filter. The lower ends of the right side plate and the left side plate of the air filter are symmetrically designed with an inward buckle shape, which cooperates with the semi-circular opening on the front plate to limit the vertical movement of the air filter. The lower ends of the right side plate and the left side plate of the air filter are provided with air filter mounting holes, and the air filter is installed and fixed by bolt fasteners.

[0015] Furthermore, the air filter support assembly is also connected to the main support plate. The cover plate is provided with support mounting holes for installing the air filter support assembly. Both the right side plate and the left side plate of the air filter have fixing grooves. The right side plate and the left side plate of the air filter are clamped onto the groove edge of the channel steel through the fixing grooves, so that the upper part of the fixing groove of the right side plate and the left side plate of the air filter fits into the groove of the channel steel. The right side plate and the left side plate of the air filter are fixedly connected to the main support plate.

[0016] Furthermore, the main support plate is provided with several threaded seats for fixing the wire harness, wire harness holes for the wire harness to pass through, and reinforcing ribs for improving the strength of the main support plate. The mudguard fixing support is located below the main support plate and has several threaded holes for installing the mudguard and its fastener bolts. The speaker bracket is installed on the short side of the cover plate and has several light holes for mounting the speaker and its fastening bolts. The lamp mounting holes are provided to correspond with the lamp mounting brackets, which facilitates lamp installation.

[0017] A mining dump truck includes one of the above-mentioned mining dump trucks with an extended beam.

[0018] The beneficial effects of this invention are: 1) Achieve functional integration and simplify structural design: Break through the design limitations of existing distributed support components, integrate multiple functions required for the front of the mining dump truck, such as "platform support, cab fixation, ladder installation, electrical accessories (lights, speakers, cameras) assembly, air filter and pipeline fixation, mudguard connection", into the same extended beam structure, reduce the number of independent components, eliminate assembly gaps and misalignment problems between distributed components, and simplify the overall structure of the front of the frame; 2) Improve assembly efficiency and dimensional matching: By unifying the design benchmark of the extended beam, functional components such as the cab support, platform support, and lamp bracket are pre-integrated into the main support plate. The extended beam only needs to be fixed to the front bracket of the frame through the flange plate to complete the synchronous assembly of multiple components. This avoids the benchmark deviation caused by the separate installation of multiple components in the existing technology, solves the problem of assembly dimension mismatch, and significantly shortens the assembly time. 3) Ensuring strength and reliability under heavy load and harsh working conditions: For mining dump trucks in open-pit mines, water conservancy and hydropower projects, etc., under heavy load (full load weight ≥150t), bumpy, and uphill (slope ≤30°) complex working conditions, through the anti-torsion and anti-bending structure design of C-shaped main support plate, multi-layer welding reinforcement of key supports, and limiting and fixing of air filter and pipeline, the overall load-bearing capacity and fatigue resistance of the extended beam are improved, ensuring that there is no risk of weld cracking or component loosening during long-term operation; 4) Reduce manufacturing costs and maintenance difficulty: Based on functional integration, reduce the design, processing and procurement costs of independent components, simplify welding and assembly processes to reduce labor costs; at the same time, through structural optimization (such as the semi-circular opening of the air filter support assembly and the U-bolt adjustment structure of the pipeline fixing assembly), filter element replacement and pipeline maintenance can be completed without disassembling the entire extended beam during later maintenance, reducing maintenance workload and costs. 5) Enhance safety and aesthetics: The cab and ladder are precisely fixed with special supports to eliminate the safety hazard of shaking when people get on and off or drive; the neat electrical accessory mounting holes and wiring harness fixing structure avoid the risk of short circuits caused by messy wiring, while ensuring that the installation angle of the front components of the frame is consistent and the layout is neat, thus improving the overall aesthetics and meeting the safety and appearance design standards for mining dump trucks. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ; Figure 3 A schematic diagram of the connection structure between the supporting flange plate and the main supporting plate; Figure 4 A schematic diagram of the connection structure between the cab support and the main support plate; Figure 5 A schematic diagram of the connection structure between the platform support and the main support plate; Figure 6 A schematic diagram of the connection structure between the pipeline fixing components and the main support plate; Figure 7 A schematic diagram of the connection structure between the mudguard fixing support and the main support plate; Figure 8This is a schematic diagram of the connection structure between the cover plate and the main support plate; Figure 9 A schematic diagram of the connection structure of the cover plate, main support plate, and speaker bracket; Figure 10 A schematic diagram of the air filter support assembly; Figure 11 This is a schematic diagram of the installation structure of the present invention. Figure 1 ; Figure 12 This is a schematic diagram of the installation structure of the present invention. Figure 2 ; In the diagram: 1. Support flange plate; 2. Main support plate; 21. Wiring harness hole; 22. Threaded seat; 23. Reinforcing rib plate; 3. Platform support; 31. Connecting plate; 32. Platform mounting holes; 4. Cab support; 41. Fixing plate; 42. Mounting plate; 43. Support flange plate; 5. Pipeline fixing assembly; 51. Fixing bracket; 52. U-shaped support; 53. U-bolt; 6. Mudguard fixing support; 7. Speaker support; 8. Lighting fixture mounting bracket; 9. Cover 91. Elevator support; 92. Lighting fixture mounting hole; 10. Air filter support assembly; 101. Right side plate of air filter; 102. Left side plate of air filter; 103. Cover plate; 104. Front plate; 105. Plate fastening bolts; 106. Air filter mounting hole; 107. Fixing groove; 11. Elevator; 12. Air filter; 13. Lighting fixture; 14. Speaker; 15. Cab; 16. Support platform; 17. Mudguard; 18. Intake pipe. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of the invention.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention.

[0022] The mining dump truck is symmetrically equipped with mining dump truck extension beams on both the left and right sides. Taking the mining dump truck extension beam set on the left side in the direction of the mining dump truck's movement as an example, for ease of description, the air filter support assembly of the mining dump truck extension beam on the left side is located at the front, the speaker support is located on the left side, and the support flange plate is located on the right side.

[0023] like Figure 1-12As shown, an extended beam for a mining dump truck includes: a support flange plate 1 connected to the front support of the dump truck; the left end of a main support plate 2 is vertically welded to the support flange plate 1; a cover plate 9 covers the front and right ends of the main support plate 1; and both the main support plate 2 and the cover plate 9 are provided with several connectors for installing components.

[0024] Several connecting components include: a platform support 3 for connecting to the support platform 16; a cab support 4 for connecting to the cab 15 and its shock absorbers; a pipe fixing assembly 5 for fixing the air intake pipe by bolt connection; a lamp mounting bracket 8 for fixing the lamp 13; a mudguard fixing bracket 6 for connecting to the mudguard 17; a ladder support 91 for fixing the upper end of the ladder 11; an air filter support assembly 10 for installing the air filter 12; a lamp mounting hole 92 corresponding to the lamp mounting bracket 8; and a speaker support 7 for installing the speaker 14. The platform support 3, cab support 4, lamp mounting bracket 8, pipe fixing assembly 5, mudguard fixing bracket 6, and air filter support assembly 10 are disposed on the main support plate 2; the ladder support 91 for fixing the upper end of the ladder 11, the lamp mounting hole 92 corresponding to the lamp mounting bracket 8, and the speaker support 7 for installing the speaker 14 are disposed on the cover plate 9.

[0025] The main support plate 2 is welded with a platform support 3 for connecting to the support platform 16. The rear side is welded with a cab support 4 for connecting to the cab 15 and its shock absorbers and a pipe fixing assembly 5 for fixing the air intake pipe by bolts. The bottom is welded with a mudguard fixing support 6 for connecting to the mudguard 17. The front side is welded with a lamp mounting bracket 8 for fixing the lamp 13. The front and right ends are welded with a cover plate 9.

[0026] like Figure 1 , 2 As shown in Figure 11, an escalator support 91 for fixing the upper end of the escalator 11 is welded to the upper right of the cover plate 9, an air filter support assembly 10 for installing the air filter 12 is welded to the middle, and a lamp mounting hole 92 corresponding to the lamp mounting bracket 8 is provided on the left side.

[0027] like Figure 1 , 2 As shown in Figures 8, 9, and 11; the cover plate 9 has an L-shaped structure, with its long side welded and fixed to the front side of the main support plate 2 along its length, and welded together with the support flange plate 1 and the main support plate 2. Its short side is welded to the left side of the main support plate 2, and the speaker bracket 7 is directly welded to the short side of the cover plate 9.

[0028] like Figure 1 , 2As shown in Figure 3-9; the main support plate 2 plays a major supporting role in the extended beam. The main support plate 2 is channel-shaped and can be made of channel steel, U-shaped parts, etc. The groove of the main support plate 2 is set facing forward. The long side of the cover plate 9 is welded to the front side of the main support plate 2 with the groove in the length direction, and the short side of the cover plate 9 is welded and fixed to the left side of the main support plate 2. The main support plate 2 is provided with several threaded seats 22 for fixing wire harnesses and wire harness holes 21 for wire harnesses to pass through.

[0029] like Figure 3 , 8 As shown, the groove of the main support plate 2 is also provided with a reinforcing rib plate 23 to improve the strength of the main support plate 2.

[0030] like Figure 1 , 2 As shown in Figure 9, the speaker support 7 is welded and fixed to the short side of the cover plate 9 which is opposite to the support flange plate 1. The speaker support 7 is provided with several light holes for mounting the speaker 14 and its fastening bolts.

[0031] like Figure 1 , 2 As shown in Figure 5, the platform support 3 is welded to the upper right of the main support plate 2. The platform support 3 includes: a connecting plate 31 and platform mounting and fixing holes 32 provided on the connecting plate 31, which are used to install and fix the support platform 16 and its fasteners.

[0032] like Figure 1 , 2 As shown in Figure 4, the cab support 4 includes: a fixing plate 41, a mounting plate 42, and a support flange plate 43. The fixing plate 41 is welded to the main support plate 2, the mounting plate 42 is vertically welded to the fixing plate 41, and the support flange plate 43 is welded to the mounting plate 42. It has mounting holes for mounting the cab 15 and its shock absorbers.

[0033] The cab support 4 is welded to the rear corner of the main support plate 2. The fixing plate 41 in the cab support 4 has a folded edge corresponding to the corner of the main support plate 2. The shape of the folded edge of the fixing plate 41 is the same as the shape of the corner of the main support plate 2, so that the fixing plate 41 fits the main support plate 2 better and improves the connection strength between the fixing plate 41 and the main support plate 2. The mounting plate 42 of the cab support 4 has folded edges on both sides to increase the stability of the mounting plate 42 on the fixing plate 41.

[0034] like Figure 1 , 6As shown in Figure 12, the pipeline fixing assembly 5 includes: a fixing bracket 51, a U-shaped support 52, and a U-shaped bolt 53. One side of the fixing bracket 51 is connected to the main support plate 2 by bolts, and the other side is connected to the fixing U-shaped bolt 53. The U-shaped support 52 is slidably mounted on the U-shaped bolt 53. The air intake pipe 18 that needs to be fixed passes between the U-shaped bolt 53 and the U-shaped support 52. By adjusting the fastening nut on the U-shaped bolt 53, the air intake pipe 18 is fastened between the U-shaped bolt 53 and the U-shaped support 52, thereby achieving fixation.

[0035] like Figure 1 , 2 As shown in Figure 7, the mudguard fixing support 6 is welded and fixed below the main support plate 2. The mudguard fixing support 6 is provided with several threaded holes for installing the mudguard 17 and its fastener bolts.

[0036] like Figure 1 , 2 As shown in Figure 10, the air filter support assembly 10 includes: an air filter right side plate 101, an air filter left side plate 102, a cover plate 103, a front plate 104, plate fastening bolts 105, and air filter mounting holes 106. The air filter right side plate 101 and the air filter left side plate 102 are connected to the front plate 104 by plate fastening bolts 105. The cover plate 103 has elastic flanges on both sides, and the minimum distance between them is less than or equal to the distance between the air filter right side plate 101 and the air filter left side plate 102 where the cover plate 103 is installed. The cover plate 103 is positioned above the front plate 104 and is fastened to the air filter right side plate 101, air filter left side plate 102, air filter right side plate 101, air filter left side plate 102, air filter right side plate 101, air filter left side plate 102, air filter right side plate 101, air filter left side plate 102, air filter right side plate 101, air filter left side plate 102, air filter right side plate 101, air filter left side plate 102, air filter right side plate 103, air filter left side plate 104 ... The left side plate 102 of the air filter provides dust and water protection, and has a simple and beautiful structure. The front plate 104 has a semi-circular opening that matches the outer contour of the end face of the air filter 12, making it easy to open the outer end cover of the air filter 12 for maintenance. The lower ends of the right side plate 101 and the left side plate 102 of the air filter are symmetrically designed with an inward buckle shape, which cooperates with the semi-circular opening on the front plate 104 to limit the vertical movement of the air filter 12. The lower ends of the right side plate 101 and the left side plate 102 of the air filter have air filter mounting holes 106, which are used to install and fix the air filter 12 with bolts.

[0037] like Figure 3 , 8As shown in Figure 10, to improve the fixing strength of the air filter support assembly, the air filter support assembly is also connected to the main support plate. The cover plate 9 is provided with support mounting holes for installing the air filter support assembly 10. The right side plate 101 and the left side plate 102 of the air filter in the air filter support assembly 10 both have fixing grooves 107. The right side plate 101 and the left side plate 102 of the air filter are secured to the lower channel steel through these fixing grooves 107. On the side of the groove, the upper part of the fixing groove 107 of the right side plate 101 and the left side plate 102 of the air filter is attached to the groove of the channel steel. The right side plate 101 and the left side plate 102 of the air filter are welded and fixed to the groove of the main support plate 2. This setting improves the support strength of the air filter support assembly 10. The main support plate 2, the cover plate 9, the right side plate 101 and the left side plate 102 of the air filter are welded together at the contact position.

[0038] The support flange plate 1 has several light holes, which are used to connect and fix it to the front support of the dump truck frame. The lamp mounting bracket 8 has threaded holes for installing and fixing the lamp 13. The ladder support 91 is used to fix the upper end of the ladder 11 and is welded to the cover plate 9. The ladder support 91 has several threaded holes for installing and fixing the ladder 11 and its fastener bolts. The lamp mounting hole 92 can be set as a square hole or a round hole according to the shape of the lamp 13.

[0039] like Figure 11-12 As shown, a mining dump truck includes the above-described extended beam for mining dump trucks.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An extended beam for a mining dump truck, characterized in that, include: Support flange plate (1), main support plate (2), and cover plate (9). The support flange plate (1) is located at one end of the cover plate (9). The cover plate (9) covers the front side of the main support plate (2) and the other end opposite to the support flange plate (1). The main support plate (2) and the cover plate (9) are provided with several connecting parts for installing components.

2. The extended beam for a mining dump truck according to claim 1, characterized in that, The plurality of connecting components include: platform support (3), cab support (4), lamp mounting bracket (8), pipeline fixing assembly (5), mudguard fixing support (6), ladder support (91), air filter support assembly (10), lamp mounting hole (92), and speaker support (7).

3. The extended beam for a mining dump truck according to claim 2, characterized in that, The main support plate (2) is groove-shaped, and the cover plate (9) is L-shaped. The long side of the cover plate (9) is set on the side with a groove in the length direction of the main support plate (2), and the short side of the cover plate (9) and the support flange plate (1) are fixed at both ends of the main support plate (2). Platform support (3), cab support (4), lamp mounting bracket (8), pipeline fixing assembly (5), mudguard fixing support (6) are set on the main support plate (2); air filter support assembly (10), ladder support (91), lamp mounting hole (92), speaker support (7) are set on the cover plate (9).

4. The extended beam for a mining dump truck according to claim 3, characterized in that, The cab support (4) includes: a fixing plate (41), a mounting plate (42), and a support flange plate (43). The fixing plate (41) is mounted on the main support plate (2), and the mounting plate (42) is vertically mounted on the fixing plate (41). The support flange plate (43) is mounted on the mounting plate (42) and is used to mount the cab (15) and its shock absorbers.

5. The extended beam for a mining dump truck according to claim 4, characterized in that, The cab support (4) is located at the rear corner of the main support plate (2). The fixed plate (41) in the cab support (4) has a folded edge corresponding to the corner of the main support plate (2). The shape of the folded edge on the fixed plate (41) is the same as the shape of the corner of the main support plate (2). The mounting plate (42) of the cab support (4) has folded edges on both sides to increase the stability of the mounting plate (42) on the fixed plate (41).

6. The extended beam for a mining dump truck according to claim 3, characterized in that, The pipeline fixing assembly (5) includes: a fixing bracket (51), a U-shaped support (52), and a U-shaped bolt (53). One side of the fixing bracket (51) is connected to the main support plate (2), and the other side is connected to the fixing U-shaped bolt (53). The U-shaped support (52) is slidably set on the U-shaped bolt (53). The air intake pipe (18) that needs to be fixed passes through the U-shaped bolt (53) and the U-shaped support (52). By adjusting the fastening nut on the U-shaped bolt (53), the air intake pipe (18) is fastened between the U-shaped bolt (53) and the U-shaped support (52) to achieve fixing.

7. The extended beam for a mining dump truck according to claim 3, characterized in that, The air filter support assembly (10) includes: a right side plate (101) of the air filter, a left side plate (102) of the air filter, a cover plate (103), a front plate (104), plate fastening bolts (105), and air filter mounting holes (106). The right side plate (101) and the left side plate (102) of the air filter are connected to the front plate (104) by plate fastening bolts (105). The cover plate (103) is set above the front plate (104) and is snapped onto the right side plate (101) and the left side plate (102) of the air filter to achieve dustproof and waterproof functions. The structure is simple. Aesthetically pleasing; the front plate (104) is provided with a semi-circular opening, which is consistent with the outer contour of the end face of the air filter (12), making it convenient to open the outer end cover of the air filter (12). The lower ends of the right side plate (101) and the left side plate (102) of the air filter are symmetrically set in an inward-facing shape, which cooperates with the semi-circular opening on the front plate (104) to limit the air filter (12) in the vertical direction. The lower ends of the right side plate (101) and the left side plate (102) of the air filter are provided with air filter mounting holes (106), and the air filter (12) is installed and fixed by bolt fasteners.

8. The extended beam for a mining dump truck according to claim 7, characterized in that, The air filter support assembly (10) is also connected to the main support plate (2). The cover plate (9) is provided with support mounting holes for installing the air filter support assembly (10). The right side plate (101) and the left side plate (102) of the air filter are both fixed with grooves (107). The right side plate (101) and the left side plate (102) of the air filter are clamped on the groove side of the channel steel through the fixed grooves (107), so that the upper part of the fixed grooves (107) of the right side plate (101) and the left side plate (102) of the air filter fits into the groove of the channel steel. The right side plate (101) and the left side plate (102) of the air filter are fixedly connected to the main support plate (2).

9. The extended beam for a mining dump truck according to claim 3, characterized in that, The main support plate (2) is provided with several threaded seats (22) for fixing wire harnesses, wire harness holes (21) for wire harnesses to pass through, and reinforcing ribs (23) for improving the strength of the main support plate (2). The mudguard fixing support (6) is located below the main support plate (2) and has several threaded holes for installing the mudguard (17) and its fastener bolts. The speaker support (7) is installed on the short side of the cover plate (9), and has several light holes for installing the speaker (14) and its fastening bolts; The lamp mounting holes (92) are provided corresponding to the lamp mounting brackets (8) to facilitate lamp installation.

10. A mining dump truck, characterized in that, Includes an extended beam for a mining dump truck as described in any one of claims 1-9.

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