Frame of mining wide-body dumper

Abstract

The invention provides a mining wide-body dumper frame which comprises a longitudinal pushing support, a transverse pushing beam assembly, a front spring support, a basin beam assembly, a longitudinal beam assembly and a turnover shaft, the longitudinal beam assembly comprises an outer longitudinal beam, an inner longitudinal beam and a reinforcing beam, the outer longitudinal beam and the inner longitudinal beam are in a groove shape, the upper end and the lower end of the reinforcing beam are welded to the top face and the bottom face in a notch of the inner longitudinal beam respectively, and the front spring support is arranged on the front spring support. The notches of the inner longitudinal beams are buckled in the notches of the outer longitudinal beams, and the side surfaces of the inner longitudinal beams are welded with the top surfaces and the bottom surfaces of the notches of the outer longitudinal beams; the two longitudinal beam assemblies are arranged in parallel and connected through the transverse pushing beam assemblies and the basin beam assemblies, the longitudinal pushing supports are welded and fixed to the front ends of the longitudinal beam assemblies, the transverse pushing beam assemblies are welded to the side faces of the inner longitudinal beams, and the front spring supports are welded to the side faces of the outer longitudinal beams and welded to supporting plates on the transverse pushing beam assemblies. Through holes penetrating through the outer longitudinal beam and the inner longitudinal beam are symmetrically formed in the tail ends of the two longitudinal beam assemblies, and the overturning shaft penetrates through the two longitudinal beam assemblies and then is fixedly welded to the outer longitudinal beam, the inner longitudinal beam and the reinforcing beam.

Description

Technical Field

[0001] The invention belongs to the technical field of dump truck structures and relates to a frame of a dump truck, in particular to a frame of a wide-body dump truck for mining. Background Art

[0002] At present, the frame structure of the common wide-body mining vehicles on the market generally has two connection forms: bolt connection or riveting, and welding. Among them, the welded structure is a box-type frame welded with high-strength thick steel plates. The longitudinal beam structure of this frame is similar to the structure of a heavy-duty rigid mining car. The welding quality requirements are high and it is easy to have defects such as welding deformation. At the same time, the crossbeam of this frame is generally welded with integral steel castings or steel plates, and then welded to the longitudinal beam. This frame is a fully enclosed structure, mostly using submerged arc welding technology. Although this structure has a high load-bearing capacity, the thickness of its upper and lower cover plates is generally 30-40mm, resulting in a heavy structure of this frame, resulting in high fuel consumption and high operating costs. In addition, when a failure occurs, the difficulty and cost of maintenance are relatively high.

[0003] The bolted or riveted frame structure is commonly known as a "double-layer beam". It is made of longitudinal beams and cross beams that are stamped or bent once and riveted together. The suspension and frame are connected by bolts, which is a flexible frame. This type of frame is an open channel structure, generally composed of two or three layers of channel steel stacked together, and the layers are connected by bolts or rivets to increase the strength of the frame. In addition, in order to avoid direct impact on the frame, a subframe is also set between the car and the frame. From the perspective of material mechanics and the limitations of the manufacturing process level, the multi-layer frames are stacked together, and the layers cannot fully contact each other, and their mechanical properties cannot be multiplied. The reliability of the structure is poor and the load-bearing capacity is low. It is generally used in scenarios with small vehicle mass.

[0004] Based on this, it is necessary to provide a structure with high structural reliability, strong bearing capacity, low deadweight and low maintenance difficulty. Summary of the invention

[0005] The present invention aims to provide a frame of a wide-body dump truck for mining, so as to solve the technical problems existing in the prior art, such as high welding quality requirements, heavy weight, difficult maintenance when failure occurs, poor reliability and low load-bearing capacity.

[0006] To achieve the above purpose, the specific technical solutions of the present invention are as follows:

[0007] A frame of a wide-body dump truck for mining, comprising a longitudinal push bracket, a transverse push beam assembly, a front spring bracket, a basin beam assembly, a longitudinal beam assembly and a tilting shaft, wherein the longitudinal beam assembly comprises an outer longitudinal beam, an inner longitudinal beam and a reinforcing beam, wherein the outer longitudinal beam and the inner longitudinal beam are respectively groove-shaped, wherein the upper and lower ends of the reinforcing beam are respectively welded to the top surface and the bottom surface in the groove of the inner longitudinal beam, wherein the groove of the inner longitudinal beam is buckled in the groove of the outer longitudinal beam, and the side surface is welded to the top surface and the bottom surface of the groove of the outer longitudinal beam;

[0008] The longitudinal beam assembly is composed of two groups arranged in parallel, which are connected by a transverse push beam assembly and a basin beam assembly. The longitudinal push bracket is welded and fixed to the front end of the longitudinal beam assembly, the transverse push beam assembly is welded to the side of the inner longitudinal beam, the front spring bracket is welded to the side of the outer longitudinal beam and to the support plate on the transverse push beam assembly, and the ends of the two groups of longitudinal beam assemblies are symmetrically provided with through holes that penetrate the outer longitudinal beam and the inner longitudinal beam. After the flip shaft penetrates the two groups of longitudinal beam assemblies, it is respectively welded and fixed to the outer longitudinal beam, the inner longitudinal beam and the reinforcing beam.

[0009] The longitudinal beam assembly also includes a through tube and a sealing plate, the two sides of the sealing plate are respectively welded and fixed to the rear ends of the outer longitudinal beam and the inner longitudinal beam, the longitudinal beam assembly is provided with a plurality of through tube holes penetrating its side surface, the through tubes correspond to the number of the through tube holes and are arranged in the through tube holes, and the side walls of the through tubes are respectively welded to the outer longitudinal beam, the inner longitudinal beam and the reinforcing beam at the through tube holes.

[0010] The basin beam assembly includes a basin beam rib plate and a basin beam cross beam. The basin beam cross beam is welded and fixed to the outer longitudinal beam. The basin beam cross beam is arranged on the top of the basin beam rib plate and is bolted to the basin beam rib plate.

[0011] The longitudinal beam assembly is provided with a plurality of weight-reducing holes penetrating through the side surface thereof.

[0012] It also includes two cross beam assemblies, which include an upper wing plate A and a lower wing plate A arranged in parallel, a web plate A vertically welded between the front and rear sides of the upper wing plate A and the lower wing plate A, and a tube cross beam A. The left and right side surfaces of the upper wing plate A and the lower wing plate A are respectively welded and fixed to the inner longitudinal beam. After welding, a cavity A is formed between the upper wing plate A, the lower wing plate A and the web plate A, and the extension direction of the cavity A is perpendicular to the longitudinal beam assembly. After the tube cross beam A crosses the cavity A, the two ends are respectively welded to the outer longitudinal beam, the inner longitudinal beam and the reinforcing beam of the two longitudinal beam assemblies.

[0013] It also includes a lifting cylinder support, the two cross beam assemblies are arranged in the middle of the longitudinal beams, the lifting cylinder support is welded to the outer longitudinal beam and is opposite to the two cross beam assemblies, and the pipe cross beam A passes through the lifting cylinder support after passing through the outer longitudinal beam and is welded to the lifting cylinder support.

[0014] It also includes a balancing crossbeam, including an upper wing plate B and a lower wing plate B arranged in parallel, a web plate B vertically welded between the front and rear side surfaces of the upper wing plate B and the lower wing plate B, and a tube crossbeam B. The left and right side surfaces of the upper wing plate B, the lower wing plate B and the web plate B are respectively welded and fixed to the inner longitudinal beam. After welding, a cavity B is formed between the upper wing plate B, the lower wing plate B and the web plate B, and the extension direction of the cavity is perpendicular to the longitudinal beam assembly. After the tube crossbeam B crosses the cavity B, the two ends are respectively welded to the outer longitudinal beam, the inner longitudinal beam and the reinforcing beam of the two longitudinal beam assemblies.

[0015] It also includes a balancing crossbeam support plate, which includes a reinforcement plate, a support plate and a transverse tube beam. There are two reinforcement plates, which are respectively welded on the outer longitudinal beam and opposite to the balancing crossbeam. The tube crossbeam B passes through the outer longitudinal beam and is welded to the reinforcement plate. The number of support plates corresponds to the reinforcement plates. The lower end of the reinforcement plate extends out of the longitudinal beam assembly and is fixed to the side of the support plate. The top surface of the support plate is welded to the bottom surface of the outer longitudinal beam. The two ends of the transverse tube beam respectively pass through the through holes opened below the support plate and are welded and fixed to the two support plates.

[0016] It also includes a transverse push support and a tail beam. The transverse push supports are in two groups and are symmetrically welded on the inner longitudinal beam and adjacent to the balance beam. The tail beam is welded at the rear end of the inner longitudinal beam and in front of the flip axis.

[0017] The beneficial effects of the present invention are as follows: the present invention provides a frame of a wide-body dump truck for mining, and by arranging the longitudinal beam assembly as a butt-jointed welding of the outer longitudinal beam and the inner longitudinal beam, and arranging a reinforcing beam in the notch of the inner longitudinal beam to support its internal top and bottom surfaces, the outer longitudinal beam and the inner longitudinal beam wing surface can be effectively fully contacted with each other, thereby effectively enhancing the bending resistance and load-bearing capacity of the frame, and having high reliability, and reducing the requirements for welding quality. A through-tube is arranged in the structure of the longitudinal beam assembly, which can effectively enhance the torsion resistance of the longitudinal beam assembly. On this basis, two cross beams and a balance cross beam are arranged to be welded to the longitudinal beam assembly respectively, and a crown beam structure is added inside thereof to penetrate the inner longitudinal beam and the outer longitudinal beam, which can enhance the torsion resistance of the vehicle as a whole, thereby improving the load-bearing capacity of the frame as a whole. The arrangement of the weight-reducing holes on the longitudinal beam assembly can effectively reduce its own weight, thereby reducing the fuel consumption of the vehicle and reducing transportation costs.

[0018] In addition, the present invention designs the basin beam assembly as a split structure, and bolts are used to connect the basin beam crossbeam and the basin beam rib plate, which can facilitate the installation and maintenance of the engine, gearbox, etc. and reduce the difficulty of maintenance. The flip shaft is arranged at the tail beam position, so that the frame and the car body can be directly connected, and there is no need to add a subframe, which reduces the cost of the overall frame. In addition, the lifting cylinder support is arranged in the middle of the longitudinal beam assembly, so that it is arranged at the position outside the two cross beam assemblies, and it can ensure that the frame has sufficient bending and torsion resistance when subjected to lifting force, and can also effectively improve the stability during the lifting process, thereby increasing the lifting speed, so as to optimize the working efficiency of the vehicle.

[0019] The technical solution provided by the present invention reduces the requirements for welding quality while ensuring the reliability and load-bearing capacity of the frame, and has a low dead weight. When the engine, gearbox, etc. fail and need to be repaired, it is easy to disassemble and reduces the difficulty of maintenance. The technical solution is suitable for promotion and application in the field of wide-body dump trucks for mining. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the exploded structure of the longitudinal beam assembly in the present invention;

[0022] Figure 3 is a cross-sectional view of the longitudinal beam assembly of the present invention;

[0023] Figure 4 It is a structural schematic diagram of the two crossbeam assemblies in the present invention;

[0024] Figure 5 It is a partial enlarged schematic diagram of the balance beam in the present invention;

[0025] Figure 6 It is a partial enlarged schematic diagram of the basin beam assembly in the present invention;

[0026] Figure 7 It is a partial enlarged schematic diagram of installing the vehicle body accessories at the balance beam support plate in the present invention.

[0027] Markings in the figure: 1. Longitudinal push bracket, 2. Horizontal push beam assembly, 3. Front spring bracket, 4. Basin beam assembly, 41. Basin beam rib plate, 42. Basin beam cross beam, 5. Longitudinal beam assembly, 51. Outer longitudinal beam, 52. Strengthening beam, 53. Inner longitudinal beam, 54. Sealing plate, 55. Through pipe, 6. Lifting cylinder support, 7. Second cross beam assembly, 71. Upper wing plate A, 72. Web plate A, 73. Tube cross beam A, 74. Lower wing plate A, 8 , upper bracket of oil and gas spring, 9, horizontal thrust bearing, 10, balance beam support plate, 101, reinforcement plate, 102, support plate, 103, horizontal tube beam, 11, balance beam, 112, web plate B, 113, tube beam B, 114, upper wing plate B, 115, lower wing plate B, 12, tail beam, 13, flip shaft, 14, oil and gas spring, 15, accumulator, 16, balance oil pipe, 17, lower thrust rod, 18, upper thrust rod. DETAILED DESCRIPTION

[0028] In order to better understand the purpose, structure and function of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings.

[0029] like Figure 1 As shown, the present invention provides a frame of a wide-body dump truck for mining, which includes a longitudinal push bracket 1, a transverse push beam assembly 2, a front spring bracket 3, a basin beam assembly 4, a longitudinal beam assembly 5 and a tilting shaft 13 welded in sequence from front to back, wherein, in order to reduce the requirements on welding quality on the basis of improving the bearing capacity and reliability of the longitudinal beam assembly 5, as shown in FIG. Figure 2 , Figure 3 As shown, the longitudinal beam assembly 5 includes an outer longitudinal beam 51, an inner longitudinal beam 53 and a reinforcing beam 52. The outer longitudinal beam 51 and the inner longitudinal beam 53 are respectively groove-shaped. The upper and lower ends of the reinforcing beam 52 are respectively welded to the top and bottom surfaces in the groove of the inner longitudinal beam 53. The groove of the inner longitudinal beam 53 is buckled in the inner and side surfaces of the groove of the outer longitudinal beam 51 and welded to the top and bottom surfaces of the groove of the outer longitudinal beam 51. The buckled inner longitudinal beam 53 and the outer longitudinal beam 51 are matched with the reinforcing beam 52. The design can ensure that the inner longitudinal beam 53 and the outer longitudinal beam 51 are fully in contact with the wing surface layer, avoiding bending when subjected to a large load, and can enhance the bending resistance and bearing capacity of the frame as a whole. In order to further reduce the difficulty of welding, in this embodiment, 45-degree grooves are opened on the sides of the upper and lower ends of the reinforcing beam 52 to facilitate welding.

[0030] The longitudinal beam assemblies 5 are two sets arranged in parallel, connected by the transverse push beam assembly 2 and the basin beam assembly 4 to form a preliminary frame. The longitudinal push bracket 1 is welded and fixed to the front end of the longitudinal beam assembly 5, the transverse push beam assembly 2 is welded to the side of the inner longitudinal beam 53, the front spring bracket 3 is welded to the side of the outer longitudinal beam 51 and to the support plate on the transverse push beam assembly 2, and the ends of the two sets of longitudinal beam assemblies 5 are symmetrically provided with through holes penetrating the outer longitudinal beam 51 and the inner longitudinal beam 53. After the flip shaft 13 penetrates the two sets of longitudinal beam assemblies 5, it is respectively welded and fixed to the outer longitudinal beam 51, the inner longitudinal beam 53 and the reinforcing beam 52. By setting the flip shaft 13, the car body can be directly set on the frame, and there is no need to add a subframe, thereby reducing the cost of the overall frame.

[0031] In addition, in order to improve the torsional resistance of the longitudinal beam assembly 5, the longitudinal beam assembly 5 in this embodiment also includes a through tube 55 and a sealing plate 54. The two sides of the sealing plate 54 are respectively welded and fixed to the rear ends of the outer longitudinal beam 51 and the inner longitudinal beam 53. The longitudinal beam assembly 5 is provided with a plurality of through-tube holes penetrating its side surface. The through tube 55 corresponds to the number of the through-tube holes and is arranged in the through-tube holes. The side walls of the through tube 55 are respectively welded to the outer longitudinal beam 51, the inner longitudinal beam 53 and the reinforcing beam 52 at the through-tube holes.

[0032] Further, such as Figure 1 , Figure 6 As shown, in order to facilitate disassembly and maintenance when the vehicle's engine, gearbox and other parts fail, the basin beam assembly 4 in this embodiment includes a basin beam rib plate 41 and a basin beam cross beam 42. The basin beam cross beam 42 is welded and fixed to the outer longitudinal beam 51, and the basin beam cross beam 42 is arranged on the top of the basin beam rib plate 41 and is bolted to the basin beam rib plate 41.

[0033] Further, such as Figure 1 , Figure 2 As shown, in order to reduce the deadweight of the frame, the longitudinal beam assembly 5 is provided with a plurality of weight-reducing holes penetrating the side thereof. In order not to affect its bearing capacity, the weight-reducing holes in this embodiment are provided in the region where the frame is subjected to less stress. In addition, the reinforcing beam 52 can also be provided as a segmented structure, that is, the reinforcing beam 52 is welded only in the region where the inner longitudinal beam 53 and the outer longitudinal beam 51 of the frame are subjected to greater stress, and the reinforcing beam 52 is reduced or not provided in the remaining regions.

[0034] Furthermore, in order to enhance the torsion resistance of the front part of the frame, Figure 1 , Figure 4As shown, the vehicle frame in this embodiment also includes two cross beam assemblies 7 arranged in the middle of the longitudinal beam assembly 5, and the two cross beam assemblies 7 include an upper wing plate A71 and a lower wing plate A74 arranged in parallel, a web plate A72 vertically welded between the front and rear sides of the upper wing plate A71 and the lower wing plate A74, and a tube cross beam A73. The left and right side surfaces of the upper wing plate A71 and the lower wing plate A74 are respectively welded and fixed to the inner longitudinal beam 53. After welding, a cavity A extending in a direction perpendicular to the longitudinal beam assembly 5 is formed between the upper wing plate A71, the lower wing plate A74 and the web plate A72. After the tube cross beam A73 crosses the cavity A, the two ends are respectively welded to the outer longitudinal beam 51, the inner longitudinal beam 53 and the reinforcing beam 52 of the two longitudinal beam assemblies 5.

[0035] Furthermore, in order to realize the self-unloading function of the vehicle, a lifting cylinder support 6 is also provided on the frame of the present embodiment. The lifting cylinder support 6 is welded to the outer longitudinal beam 51 and is opposite to the two cross beam assembly 7. The tubular cross beam A73 passes through the lifting cylinder support 6 after passing through the outer longitudinal beam 51 and is welded thereto, thereby ensuring that during the process of lifting the vehicle body, the frame has sufficient bending and torsional resistance when subjected to the lifting force. In addition, by making it opposite to the two cross beam assembly 7, the stability of the frame during the lifting process can be improved, thereby increasing the lifting speed and further improving the self-unloading efficiency of the vehicle.

[0036] Furthermore, in order to improve the torsional resistance of the middle and rear parts of the frame, Figure 1 , Figure 5 As shown, the vehicle frame in this embodiment also includes a balancing crossbeam 11 arranged in the middle of the longitudinal beam assembly 5 and located behind the two crossbeam assemblies 7. The balancing crossbeam specifically includes an upper wing plate B114 and a lower wing plate B115 arranged in parallel, a web plate B112 vertically welded between the front and rear side surfaces of the upper wing plate B114 and the lower wing plate B115, and a tube crossbeam B113. The left and right side surfaces of the upper wing plate B114, the lower wing plate B115 and the web plate B112 are respectively welded and fixed to the inner longitudinal beam 53. After welding, a cavity B is formed between the upper wing plate B114, the lower wing plate B115 and the web plate B112, and the extension direction is perpendicular to the longitudinal beam assembly 5. After the tube crossbeam B113 crosses the cavity B, the two ends are respectively welded to the outer longitudinal beam 51, the inner longitudinal beam 53 and the reinforcing beam 52 of the two longitudinal beam assemblies 5.

[0037] Further, such as Figure 1 , Figure 5As shown, it also includes a balancing crossbeam support plate 10 for connecting the rear axle thrust rod, the balancing crossbeam support plate 10 includes a reinforcing plate 101, a support plate 102 and a transverse tube beam 103, the number of the reinforcing plates 101 is two, respectively welded on the outer longitudinal beams 51 opposite to the two longitudinal beam assemblies 5 and opposite to the balancing crossbeam 11, the tube crossbeam B113 passes through the outer longitudinal beam 51 and is welded to the reinforcing plate 101, the reinforcing plate 101 is used to fix the accumulator 15 connected to the oil and gas spring 14 through the balancing oil pipe 16, and the number of the support plates 102 is the same as the number of the reinforcing plates 101 Correspondingly, the lower end of the reinforcing plate 101 extends out of the longitudinal beam assembly 5 and is fixed to the side of the support plate 102. The top surface of the support plate 102 is welded to the bottom surface of the outer longitudinal beam 51. The rear axle thrust rods are symmetrically arranged on the support plate 102 with the same length, and respectively include a lower thrust rod 17 and an upper thrust rod 18 located at the lower end of the support plate 102. The two ends of the transverse tube beam 103 respectively pass through the through holes opened at the bottom of the support plate 102 and are welded and fixed to the two support plates 102, ensuring that the vertical loads of the two axles are equal under any circumstances, and no individual wheels will be suspended in the air.

[0038] Further, such as Figure 1 As shown, the vehicle frame in this embodiment also includes a transverse push support 9, an oil-gas spring upper bracket 8 and a tail beam 12. The transverse push support 9 is divided into two groups, each group has two members, which are symmetrically welded on the inner longitudinal beam 53 and located on the front and rear sides of the balance beam 11, and are used to connect the transverse thrust rod, thereby connecting to the axle to prevent the axle from lateral displacement when turning left or right, thereby maintaining the lateral stability of the vehicle; the oil-gas spring upper bracket 8 is divided into two groups distributed from front to rear, each group has two members, which are arranged opposite to the transverse push support 9 and welded on the outer longitudinal beam 51, and are used to connect the oil-gas spring 14, so that the vehicle frame has buffering performance and ensures the stability of the wide-body dump truck. The tail beam 12 is welded and arranged at the rear end of the inner longitudinal beam 53 and in front of the flip shaft 13, and is used to improve the stability of the ends of the two longitudinal beam assemblies 5, improve their torsional resistance and the load-bearing capacity of the ends.

[0039] It is to be understood that the present invention is described by some embodiments, and it is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A frame of a wide-body dump truck for mining, characterized in that: It comprises a longitudinal push bracket (1), a transverse push beam assembly (2), a front spring bracket (3), a basin beam assembly (4), a longitudinal beam assembly (5) and a tilting shaft (13); the longitudinal beam assembly (5) comprises an outer longitudinal beam (51), an inner longitudinal beam (53) and a reinforcing beam (52); the outer longitudinal beam (51) and the inner longitudinal beam (53) are respectively groove-shaped; the upper and lower ends of the reinforcing beam (52) are respectively welded to the top surface and the bottom surface of the groove of the inner longitudinal beam (53); the groove of the inner longitudinal beam (53) is buckled inside the groove of the outer longitudinal beam (51); and the side surface is welded to the top surface and the bottom surface of the groove of the outer longitudinal beam (51); The longitudinal beam assemblies (5) are two groups arranged in parallel and connected by a transverse push beam assembly (2) and a basin beam assembly (4). The longitudinal push bracket (1) is welded and fixed to the front end of the longitudinal beam assembly (5). The transverse push beam assembly (2) is welded to the side of the inner longitudinal beam (53). The front spring bracket (3) is welded to the side of the outer longitudinal beam (51) and to the support plate on the transverse push beam assembly (2). The ends of the two groups of longitudinal beam assemblies (5) are symmetrically provided with through holes penetrating the outer longitudinal beam (51) and the inner longitudinal beam (53). After the turning shaft (13) penetrates the two groups of longitudinal beam assemblies (5), it is respectively welded and fixed to the outer longitudinal beam (51), the inner longitudinal beam (53) and the reinforcing beam (52).

2. The frame of a wide-body dump truck for mining according to claim 1, characterized in that: The longitudinal beam assembly (5) further comprises a through-tube (55) and a sealing plate (54), the two sides of the sealing plate (54) being respectively welded and fixed to the rear ends of the outer longitudinal beam (51) and the inner longitudinal beam (53), the longitudinal beam assembly (5) being provided with a plurality of through-tube holes penetrating the side thereof, the through-tube (55) corresponding in number to the through-tube holes and arranged in the through-tube holes, the side walls of the through-tube (55) being respectively welded to the outer longitudinal beam (51), the inner longitudinal beam (53) and the reinforcing beam (52) at the through-tube holes.

3. The frame of a wide-body dump truck for mining according to claim 1, characterized in that: The basin beam assembly (4) comprises a basin beam rib plate (41) and a basin beam cross beam (42), wherein the basin beam cross beam (42) is welded and fixed to the outer longitudinal beam (51), and the basin beam cross beam (42) is arranged on the top of the basin beam rib plate (41) and is bolted to the basin beam rib plate (41).

4. The frame of a wide-body dump truck for mining according to claim 2, characterized in that: The longitudinal beam assembly (5) is provided with a plurality of weight-reducing holes penetrating through the side surface thereof.

5. The frame of a wide-body dump truck for mining according to claim 1, characterized in that: It also includes two cross beam assemblies (7), the two cross beam assemblies (7) including an upper wing plate A (71) and a lower wing plate A (74) arranged in parallel, a web plate A (72) vertically welded between the front and rear sides of the upper wing plate A (71) and the lower wing plate A (74), and a tube cross beam A (73), the left and right side surfaces of the upper wing plate A (71) and the lower wing plate A (74) are respectively welded and fixed to the inner longitudinal beam (53), and a cavity A extending in a direction perpendicular to the longitudinal beam assembly (5) is formed between the welded upper wing plate A (71), the lower wing plate A (74) and the web plate A (72), and the tube cross beam A (73) crosses the cavity A and the two ends are respectively welded to the outer longitudinal beam (51), the inner longitudinal beam (53) and the reinforcing beam (52) of the two longitudinal beam assemblies (5).

6. The frame of a wide-body dump truck for mining according to claim 5, characterized in that: It also includes a lifting cylinder support (6), the two cross beam assemblies (7) are arranged in the middle of the longitudinal beams, the lifting cylinder support (6) is welded to the outer longitudinal beam (51) and is opposite to the two cross beam assemblies (7), and the tube cross beam A (73) passes through the lifting cylinder support (6) after passing through the outer longitudinal beam (51) and is welded to the lifting cylinder support (6).

7. The frame of a wide-body dump truck for mining according to claim 1, characterized in that: It also includes a balancing crossbeam (11), including an upper wing plate B (114) and a lower wing plate B (115) arranged in parallel, a web plate B (112) vertically welded between the front and rear side surfaces of the upper wing plate B (114) and the lower wing plate B (115), and a tube crossbeam B (113). The left and right side surfaces of the upper wing plate B (114), the lower wing plate B (115) and the web plate B (112) are respectively welded and fixed to the inner longitudinal beam (53). After the welding, a cavity B extending in a direction perpendicular to the longitudinal beam assembly (5) is formed between the upper wing plate B (114), the lower wing plate B (115) and the web plate B (112). After the tube crossbeam B (113) crosses the cavity B, the two ends are respectively welded to the outer longitudinal beam (51), the inner longitudinal beam (53) and the reinforcing beam (52) of the two longitudinal beam assemblies (5).

8. The frame of a wide-body dump truck for mining according to claim 7, characterized in that: It also includes a balancing crossbeam support plate (10), the balancing crossbeam support plate (10) including a reinforcing plate (101), a support plate (102) and a transverse tube beam (103), the number of the reinforcing plates (101) being two, respectively welded on the outer longitudinal beam (51) and opposite to the balancing crossbeam (11), the tube crossbeam B (113) passing through the outer longitudinal beam (51) and then welded to the reinforcing plate (101), the number of the support plates (102) corresponding to the number of the reinforcing plates (101), the lower end of the reinforcing plate (101) extending out of the longitudinal beam assembly (5) and being fixed to the side of the support plate (102), the top surface of the support plate (102) being welded to the bottom surface of the outer longitudinal beam (51), and the two ends of the transverse tube beam (103) respectively passing through the through holes opened below the support plate (102) and then being welded and fixed to the two support plates (102).

9. The frame of a wide-body dump truck for mining according to claim 1, characterized in that: It also includes a transverse push support (9) and a tail beam (12). The transverse push support (9) is in two groups and is symmetrically welded on the inner longitudinal beam (53) and adjacent to the balance beam (11). The tail beam (12) is welded and arranged at the rear end of the inner longitudinal beam (53) and in front of the tilting shaft (13).

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