Frame structure of extended-range mining dump truck

Abstract

The invention discloses a frame structure of a range-extending type mining dump truck. The rear bumper consists of a front end beam, a left front longitudinal beam, a right front longitudinal beam, a left longitudinal beam, a right longitudinal beam, a round girder, a first cross beam, a second cross beam, a suspension welding assembly, a rear through beam, a rear bumper, a range extender front fixing seat, a range extender rear fixing seat, an electric drive system fixing seat, a fuel tank bracket and an electric control system bracket. The range extender and the electric drive system are good in installation universality, the arrangement with large installation stress of the battery box is locally reinforced, the rigidity of the vehicle frame is improved, the cracking risk is reduced, and the vehicle frame is suitable for wide application and popularization.

Description

Technical Field

[0001] The invention relates to the technical field of mining dump trucks, in particular to a frame structure of an extended-range mining dump truck. Background Art

[0002] With the development of new energy technologies, new energy mining dump trucks are accounting for an increasing proportion in major metal mines, coal mines, and sand and gravel aggregate yards. However, pure electric mining dump trucks have the disadvantages of slow charging speed, fast power consumption, and low transportation efficiency. Therefore, extended-range mining vehicles can make up for the shortcomings of pure electric mining vehicles, and at the same time can also achieve the effect of energy conservation and emission reduction.

[0003] At present, the extended-range mining vehicle has two systems, the range extender and the electric drive. The curb weight is heavy and the layout space is dense. The frame is the load-bearing component of the whole vehicle, and its strength is particularly important to the reliability of the whole vehicle. The frame structure of traditional mining vehicles adopts an equal spacing design for the front and rear longitudinal beams. The front space is cramped, and it is difficult to arrange the range extender, electric drive system, and cooling system. At the same time, the installation brackets of the range extender and electric drive system on the frame are less consistent. The longitudinal beams are prone to cracking in the battery box, fuel tank, and electronic control system where the force is greater, resulting in major quality problems. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and to provide a frame structure of a range-extended mining dump truck to solve the problems of insufficient layout space, poor consistency of the mounting brackets of the range extender and the electric drive system on the frame, and easy cracking of the frame longitudinal beams in the local parts with greater stress.

[0005] The technical solution provided by the present invention is: a frame structure of a range-extended mining dump truck, which is special in that it is composed of a front beam, a left front longitudinal beam, a right front longitudinal beam, a left longitudinal beam, a right longitudinal beam, a Yuanbao beam, a first cross beam, a second cross beam, a suspension welding assembly, a rear through beam, a rear bumper, a front fixing seat of a range extender, a rear fixing seat of a range extender, a fixing seat of an electric drive system, a fuel tank bracket, and an electronic control system bracket; The front end beam is fixedly connected to the inner side of the front end of the left front longitudinal beam and the right front longitudinal beam, and the left front longitudinal beam and the right front longitudinal beam are respectively fixedly connected to the outer side of the front part of the left longitudinal beam and the right longitudinal beam symmetrically. The lower ends of the left and right longitudinal beams are fixedly connected to the Yuanbao beam, and the inner sides of the left and right longitudinal beams are fixedly connected to the first cross beam and the suspension welding assembly. The left and right longitudinal beams form a frame-type structure in which the second cross beam and the rear through beam are inserted and fixed together, and the lower ends of the tails of the left and right longitudinal beams are fixedly connected to the rear bumper to form a frame; the front fixing seat and the rear fixing seat of the range extender are symmetrically fixedly connected to the inner side of the front part of the frame; the electric drive system fixing seats are respectively fixedly connected to the inner side of the frame along the axial direction of the frame symmetrically; the electric control system bracket is symmetrically fixedly connected to the outer side of the front of the frame; the left side of the frame is fixedly connected to the fuel tank bracket along the axial direction of the frame.

[0006] Furthermore, the left front longitudinal beam and the right front longitudinal beam are both composed of a front longitudinal beam web, a sealing plate, a front longitudinal beam vertical tube, an intermediate rib plate, and a rear rib plate; the front longitudinal beam web is fixedly connected to the sealing plate at the front, fixedly connected to the front longitudinal beam vertical tube and the intermediate rib plate at the middle, and fixedly connected to the rear rib plate at the rear.

[0007] Furthermore, the left longitudinal beam and the right longitudinal beam are both composed of an upper wing plate, a lower wing plate, an inner web plate, and an outer web plate. The upper wing plate is respectively fixedly connected to one end of the inner web plate and the outer web plate, and the lower wing plate is fixedly connected to the other end of the inner web plate and the outer web plate to form a frame structure. The right longitudinal beam is provided with a battery box mounting shaft tube and a wire passing tube along its axial direction. One end of the battery box mounting shaft tube and the wire passing tube is inserted into the inner web plate and fixedly connected, and the other end is inserted into the outer web plate and fixedly connected.

[0008] Furthermore, the Yuanbao beam is composed of a Yuanbao beam web, a Yuanbao beam wing plate, and a mounting plate. There are two Yuanbao beam webs, and Yuanbao beam wing plates are arranged inside the two Yuanbao beam webs. Mounting plates are respectively arranged at both ends of the Yuanbao beam web.

[0009] Furthermore, the first crossbeam is composed of a crossbeam wing plate, a crossbeam upright plate, a crossbeam rib plate, a right crossbeam mounting plate, and a left crossbeam mounting plate; there are two crossbeam wing plates and two right crossbeam mounting plates respectively; a crossbeam upright plate is arranged inside the two crossbeam wing plates, one side of the crossbeam rib plate is fixedly connected to the crossbeam upright plate, the upper end is fixedly connected to one crossbeam wing plate, and the lower end is fixedly connected to the other crossbeam wing plate; a right crossbeam mounting plate is fixedly connected to the upper part of one end of a crossbeam wing plate, and the other right crossbeam mounting plate is fixedly connected to the lower part of one end of the other crossbeam wing plate; the left crossbeam mounting plate is bent inwardly and closed and fixedly connected to the other ends of the two crossbeam wing plates.

[0010] Furthermore, the suspension welding assembly is formed by fixing a suspension outer panel, a suspension upper wing panel, a suspension side panel, and a suspension lower wing panel; the suspension side panels are symmetrical front to back; the suspension upper wing panel is fixedly connected to the front and rear two suspension side panels and the suspension lower wing panel, the round tube beam passes through the front suspension side panel through hole and is fixedly connected to the rear suspension side panel, and the suspension outer panel is respectively fixedly connected to the left and right sides of the suspension upper wing panel and the suspension lower wing panel.

[0011] Furthermore, the range extender front fixing seat is composed of a fixing plate, a lower fixing plate, a side fixing plate, and a connecting plate; the lower end of the fixing plate is vertically fixed to the right end surface of the lower fixing plate, the upper end of the side fixing plate is vertically fixed to the left end surface of the lower fixing plate, and the front and rear of the side fixing plate are respectively fixed to the connecting plate; The rear fixing seat of the range extender is composed of a fixing plate, a lower fixing plate, a mounting plate, and a connecting plate; the side surface of the fixing plate is fixedly connected to the side surfaces of the mounting plate and the connecting plate, and the front and rear of the mounting plate are respectively fixedly connected to the connecting plate; the lower end of the connecting plate is fixedly connected to the lower fixing plate.

[0012] Furthermore, the electric drive system fixing seat is composed of an electric drive system fixing plate, an electric drive system mounting plate, and a reinforcing rib plate. The upper end of the electric drive system fixing plate is fixedly connected to one end of the electric drive system mounting plate, and reinforcing rib plates are respectively provided at the front and rear ends of the electric drive system mounting plate.

[0013] Furthermore, the fuel tank bracket is composed of a fuel tank bracket fixing plate, a fuel tank mounting plate, and a connecting plate; a connecting plate is arranged between the fuel tank bracket fixing plate and the fuel tank mounting plate, and two connecting plates are fixedly connected at the front and rear sides of the fuel tank bracket fixing plate and the fuel tank mounting plate, and the two connecting plates are distributed at the two side ends.

[0014] Furthermore, the electric control system bracket is composed of an electric control system fixing plate, an electric control system mounting plate, and a reinforcing rib plate; the upper end of the electric control system fixing plate is fixedly connected to the right end of the electric control system mounting plate, the right end of the reinforcing rib plate is fixedly connected to one side of the electric control system fixing plate, the upper end of the reinforcing rib plate is fixedly connected to the lower end of the electric control system mounting plate, and the reinforcing rib plates are evenly distributed.

[0015] The beneficial effects of the present invention are as follows: 1. The front longitudinal beam of the frame is an outward-turned structure, which provides sufficient layout space for the range extender and the cooling system, and provides convenience for subsequent disassembly and maintenance; 2. The range extender fixing seat and the electric drive system fixing seat are universal structures, which can adapt to different power configurations; 3. The battery box mounting hole adopts an installation shaft tube to connect the inner web and the outer web of the longitudinal beam, and is partially strengthened; the fuel tank bracket is strengthened and welded to the left longitudinal beam at the same time; the electronic control system bracket is welded to the outer web of the longitudinal beam and the upper wing plate of the longitudinal beam at the same time, and the strength is increased, which improves the service life of the frame; 4. The front end beam is fixedly connected to the inner side of the front end of the left front longitudinal beam and the right front longitudinal beam, and the internal space is larger, which is convenient for arranging the range extender and the cooling system; 5. The battery box mounting shaft tube is arranged along the axial direction of the right longitudinal beam, and the shaft tube is inserted between the inner web and the outer web of the left longitudinal beam, so that the rigidity of the frame at the part with greater force is increased, the structure is more reliable, and the risk of cracking is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 is a schematic structural diagram of the left front longitudinal beam of the present invention; Figure 3 is a front view of the right longitudinal beam of the present invention; Figure 4 yes Figure 3 AA local cross-section diagram; Figure 5 It is a structural schematic diagram of the Yuanbao beam of the present invention; Figure 6 is a schematic structural diagram of a first crossbeam of the present invention; Figure 7It is a structural schematic diagram of the suspension welding assembly of the present invention; Figure 8 It is a schematic structural diagram of the front fixing seat of the range extender of the present invention; Fig. 9 It is a schematic structural diagram of the rear fixing seat of the range extender of the present invention; Fig.10 It is a structural schematic diagram of the electric drive system fixing seat of the present invention; Fig.11 is a schematic structural diagram of the fuel tank bracket of the present invention; Fig.12 It is a structural schematic diagram of the electric control system bracket of the present invention.

[0017] In the figure: 1 front end beam, 2 left front longitudinal beam, 201 front longitudinal beam web, 202 cover plate, 203 front longitudinal beam vertical tube, 204 middle rib plate, 205 rear rib plate, 3 right front longitudinal beam, 4 left longitudinal beam, 5 right longitudinal beam, 501 upper wing plate, 502 lower wing plate, 503 inner web plate, 504 outer web plate, 505 battery box installation shaft tube, 506 wire tube, 6 yuanbao beam, 601 yuanbao beam web plate, 602 yuanbao beam wing plate, 603 mounting plate, 7 first cross beam, 701 cross beam wing plate, 702 cross beam vertical plate, 703 cross beam rib plate, 704 right cross beam mounting plate, 705 left cross beam mounting plate, 8 second cross beam, 9 suspension welding assembly, 901 suspension outer vertical plate, 902 suspension upper wing plate, 903 suspension side plate, 904 suspension lower wing panel, 10 rear through beam, 11 rear bumper, 12 range extender front fixing seat, 1201 fixing plate, 1202 lower fixing plate, 1203 side fixing plate, 1204 connecting plate, 13 range extender rear fixing seat, 1301 fixing plate, 1302 lower fixing plate, 1303 mounting plate, 1304 connecting plate, 14 electric drive system fixing seat, 1401 electric drive system fixing plate, 1402 electric drive system mounting plate, 1403 reinforcing rib plate, 15 fuel tank bracket, 1501 fuel tank bracket fixing plate, 1502 fuel tank mounting plate, 1503 connecting plate, 16 electronic control system bracket, 1601 electronic control system fixing plate, 1602 electronic control system mounting plate, 1603 reinforcing rib plate. DETAILED DESCRIPTION

[0018] For better understanding and implementation, the present invention is described in detail below with reference to the accompanying drawings.

[0019] like Figure 1 , 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, a frame structure of a range-extended mining dump truck, comprising a front end beam 1, a left front longitudinal beam 2, a right front longitudinal beam 3, a left longitudinal beam 4, a right longitudinal beam 5, a yuanbao beam 6, a first cross beam 7, a second cross beam 8, a suspension welding assembly 9, a rear through beam 10, a rear bumper 11, a range extender front fixing seat 12, a range extender rear fixing seat 13, an electric drive system fixing seat 14, a fuel tank bracket 15, and an electronic control system bracket 16; The front end beam 1 is welded to the inner side of the front end of the left front longitudinal beam 2 and the right front longitudinal beam 3, the left front longitudinal beam 2 and the right front longitudinal beam 3 are respectively welded symmetrically on the outer side of the front part of the left longitudinal beam 4 and the right longitudinal beam 5, the ingot beam 6 is fixedly connected to the lower end of the left longitudinal beam 4 and the right longitudinal beam 5, the first cross beam 7 and the suspension welding assembly 9 are respectively fixedly connected to the inner side of the left longitudinal beam 4 and the right longitudinal beam 5, the second cross beam 8 and the rear through beam 10 are respectively inserted into the frame structure of the left longitudinal beam 4 and the right longitudinal beam 5, and welded together, the rear bumper 11 is welded to the lower end of the tail of the left longitudinal beam 4 and the right longitudinal beam 5 to form a frame; the front fixing seat 12 of the range extender and the rear fixing seat 13 of the range extender are respectively welded symmetrically on the inner side of the front part of the frame; the three electric drive system fixing seats 14 on one side are respectively welded symmetrically on the inner side of the frame along the axial direction of the frame; the electronic control system bracket 16 is respectively welded symmetrically on the outer side of the front of the frame; the fuel tank bracket 15 is respectively welded on the left side of the frame along the axial direction of the frame; The left front longitudinal beam 2 and the right front longitudinal beam 3 are both composed of a front longitudinal beam web 201, a sealing plate 202, a front longitudinal beam vertical tube 203, a middle rib plate 204, and a rear rib plate 205; the sealing plate 202 is welded to the front of the front longitudinal beam web 201, the front longitudinal beam vertical tube 203 and the middle rib plate 204 are welded to the middle, and the rear rib plate 205 is welded to the rear; The left longitudinal beam 4 and the right longitudinal beam 5 are welded together by the upper wing plate 501, the lower wing plate 502, the inner web plate 503 and the outer web plate 504; the upper wing plate 501 is welded to one end of the inner web plate 503 and the outer web plate 504 respectively, and the lower wing plate 502 is welded to the other end of the inner web plate 503 and the outer web plate 504 to form a frame structure; different from the left longitudinal beam, the right longitudinal beam 5 is installed with a battery box installation shaft tube 505 and a wire tube 506 along its axial direction, and one end of the battery box installation shaft tube 505 and the wire tube 506 is inserted in the inner web plate 503 for welding, and the other end is inserted in the outer web plate 504 for welding, thereby improving the strength of this position; The Yuanbao beam 6 is welded by a Yuanbao beam web 601, a Yuanbao beam flange 602, and a mounting plate 603; the Yuanbao beam flange 602 is installed inside the two Yuanbao beam webs 601, and the mounting plates 603 are installed at both ends of the Yuanbao beam web 601; The first crossbeam 7 is composed of a crossbeam wing plate 701, a crossbeam upright plate 702, a crossbeam rib plate 703, a right crossbeam mounting plate 704, and a left crossbeam mounting plate 705; the crossbeam upright plates 702 are installed inside the two crossbeam wing plates 701, and one side of the crossbeam rib plate 703 is welded to the crossbeam upright plates 702 to form an "I"-shaped structure, the upper part of the crossbeam rib plate 703 is welded to one crossbeam wing plate 701, and the lower part is welded to the other crossbeam wing plate 701; a right crossbeam mounting plate 704 is connected to the upper part of one end of a crossbeam wing plate 701 by bolts, and the other right crossbeam mounting plate 704 is connected to the lower part of one end of another crossbeam wing plate 701 by bolts; the left crossbeam mounting plate 705 is bent inward and connected to the other ends of the two crossbeam wing plates 701 by bolts; The suspension welding assembly 9 is welded by a suspension outer plate 901, a suspension upper wing plate 902, a suspension side plate 903, and a suspension lower wing plate 904; the suspension side plate 903 is symmetrical in front and back; the suspension upper wing plate 902 is first welded together with the front and rear two suspension side plates 903 and the suspension lower wing plate 904, the round tube beam 905 passes through the through hole of the front suspension side plate 903 and is welded to the rear suspension side plate 903, and the suspension outer plate 901 is respectively welded to the left and right sides of the suspension lower wing plate 904 of the suspension upper wing plate 902; The range extender front fixing seat 12 is welded by a fixing plate 1201, a lower fixing plate 1202, a side fixing plate 1203, and a connecting plate 1204. The lower end of the fixing plate 1201 is firstly vertically welded to the right end face of the lower fixing plate 1202, and the upper end of the side fixing plate 1203 is then vertically welded to the left end face of the lower fixing plate 1202. A connecting plate 1204 is respectively welded to the front and rear of the side fixing plate 1203. The range extender rear fixing seat 13 is welded by a fixing plate 1301, a lower fixing plate 1302, a mounting plate 1303, and a connecting plate 1304; the side of the fixing plate 1301 is first welded to the side of the mounting plate 1303 and the connecting plate 1304, and then the lower fixing plate 1302 is welded to the lower end of the connecting plate 1304, and finally the front and rear of the mounting plate 1303 are respectively welded to the connecting plate 1304; The electric drive system fixing seat 14 is welded by an electric drive system fixing plate 1401, an electric drive system mounting plate 1402, and a reinforcing rib plate 1403. The upper end of the electric drive system fixing plate 1401 is welded to one end of the electric drive system mounting plate 1402, and a reinforcing rib plate 1403 is welded to each of the front and rear ends of the electric drive system mounting plate 1402. The fuel tank bracket 15 is welded by a fuel tank bracket fixing plate 1501, a fuel tank mounting plate 1502, and a connecting plate 1503; the fuel tank bracket fixing plate 1501 is firstly welded to one end of two connecting plates 1503, and the fuel tank mounting plate 1502 is then welded to the other ends of the two connecting plates 1503, and the two connecting plates 1503 are distributed at both ends; The electric control system bracket 16 is welded by an electric control system fixing plate 1601, an electric control system mounting plate 1602, and a reinforcing rib plate 1603; the upper end of the electric control system fixing plate 1601 is welded to the right end of the electric control system mounting plate 1602, the right end of the reinforcing rib plate 1603 is welded to one side of the electric control system fixing plate 1601, and the upper end is welded to the lower end of the electric control system mounting plate 1602. There are six reinforcing rib plates 1603, which are evenly distributed.

[0020] The frame structure of the range-extended mining vehicle described in the present invention has an outward-turned front longitudinal beam, which provides sufficient layout space for the range extender and the cooling system and facilitates subsequent disassembly and maintenance; the range extender fixing seat and the electric drive system fixing seat are universal structures that can adapt to different power configurations; the battery box mounting hole uses an installation shaft tube to connect the inner web and outer web of the longitudinal beam, and is partially reinforced; the fuel tank bracket is reinforced and welded to the left longitudinal beam; the electronic control system bracket is welded to the outer web and upper wing plate of the longitudinal beam at the same time, which increases the strength and greatly improves the service life of the frame.

[0021] It should be understood that the technical features not elaborated in detail in this specification belong to the prior art. Although the implementation methods of the present invention are described above in conjunction with the accompanying drawings, the present invention is not limited to the above-mentioned specific implementation methods, which are merely illustrative and not restrictive. Ordinary technicians in this field can make more forms under the enlightenment of the present invention without departing from the scope of protection of the present invention and the claims, which are all within the protection scope of the present invention.

Claims

1. A frame structure of an extended-range mining dump truck, characterized in that: It is composed of a front end beam (1), a left front longitudinal beam (2), a right front longitudinal beam (3), a left longitudinal beam (4), a right longitudinal beam (5), a yuanbao beam (6), a first cross beam (7), a second cross beam (8), a suspension welding assembly (9), a rear through beam (10), a rear bumper (11), a front fixing seat of a range extender (12), a rear fixing seat of a range extender (13), an electric drive system fixing seat (14), a fuel tank bracket (15), and an electronic control system bracket (16); The front end beam (1) is fixedly connected to the inner side of the front end of the left front longitudinal beam (2) and the right front longitudinal beam (3); the left front longitudinal beam (2) and the right front longitudinal beam (3) are respectively fixedly connected to the outer side of the front part of the left longitudinal beam (4) and the right longitudinal beam (5) in a left-right symmetrical manner; the lower ends of the left longitudinal beam (4) and the right longitudinal beam (5) are fixedly connected to the ingot beam (6); the inner sides of the left longitudinal beam (4) and the right longitudinal beam (5) are fixedly connected to the first cross beam (7) and the suspension welding assembly (9); the left longitudinal beam (4) and the right longitudinal beam (5) form a frame structure in which the second cross beam (8) and the rear cross beam (9) are inserted. The through beam (10) is fixedly connected together, and the lower ends of the tails of the left longitudinal beam (4) and the right longitudinal beam (5) are fixedly connected to the rear bumper (11) to form a vehicle frame; the front fixing seat (12) and the rear fixing seat (13) of the range extender are fixedly connected to the inner side of the front part of the vehicle frame symmetrically on the left and right; the electric drive system fixing seats (14) are fixedly connected to the inner side of the vehicle frame symmetrically along the axial direction of the vehicle frame; the electric control system bracket (16) is fixedly connected to the outer side of the front part of the vehicle frame symmetrically on the left and right; and the fuel tank bracket (15) is fixedly connected to the left side of the vehicle frame along the axial direction of the frame.

2. The frame structure of the extended-range mining dump truck according to claim 1 is characterized in that: The left front longitudinal beam (2) and the right front longitudinal beam (3) are both composed of a front longitudinal beam web (201), a cover plate (202), a front longitudinal beam vertical tube (203), an intermediate rib plate (204), and a rear rib plate (205); the front longitudinal beam web (201) is fixedly connected to the cover plate (202) at the front, fixedly connected to the front longitudinal beam vertical tube (203) and the intermediate rib plate (204) at the middle, and fixedly connected to the rear rib plate (205) at the rear.

3. The frame structure of the extended-range mining dump truck according to claim 1 is characterized in that: The left longitudinal beam (4) and the right longitudinal beam (5) are both composed of an upper wing plate (501), a lower wing plate (502), an inner web plate (503), and an outer web plate (504); the upper wing plate (501) is fixedly connected to one end of the inner web plate (503) and the outer web plate (504), respectively; the lower wing plate (502) is fixedly connected to the other ends of the inner web plate (503) and the outer web plate (504), to form a frame structure; the right longitudinal beam (55) is provided with a battery box mounting shaft tube (505) and a wire passing tube (506) along its axial direction; one end of the battery box mounting shaft tube (505) and the wire passing tube (506) is inserted into the inner web plate (503) and fixedly connected, and the other end is inserted into the outer web plate (504) and fixedly connected.

4. The frame structure of the extended-range mining dump truck according to claim 1 is characterized in that: The Yuanbao beam (6) is composed of a Yuanbao beam web (601), a Yuanbao beam wing plate (602), and a mounting plate (603). There are two Yuanbao beam webs (601), and the Yuanbao beam wing plates (602) are arranged inside the two Yuanbao beam webs (601). The mounting plates (603) are respectively arranged at both ends of the Yuanbao beam web (601).

5. The frame structure of the extended-range mining dump truck according to claim 1 is characterized in that: The first crossbeam (7) is composed of a crossbeam wing plate (701), a crossbeam upright plate (702), a crossbeam rib plate (703), a right crossbeam mounting plate (704), and a left crossbeam mounting plate (705); there are two crossbeam wing plates (701) and two right crossbeam mounting plates (704); crossbeam upright plates (702) are arranged inside the two crossbeam wing plates (701), and one side of the crossbeam rib plate (703) is fixedly connected to the crossbeam upright plate (702) The upper end is fixedly connected to one crossbeam wing plate (701), and the lower end is fixedly connected to the other crossbeam wing plate (701); a right crossbeam mounting plate (704) is fixedly connected to the upper part of one end of a crossbeam wing plate (701), and the other right crossbeam mounting plate (704) is fixedly connected to the lower part of one end of the other crossbeam wing plate (701); the left crossbeam mounting plate (705) is bent inwardly and is closed and fixedly connected to the other ends of the two crossbeam wing plates (701).

6. The frame structure of the extended-range mining dump truck according to claim 1, characterized in that: The suspension welding assembly (9) is formed by fixing a suspension outer plate (901), a suspension upper wing plate (902), a suspension side plate (903), and a suspension lower wing plate (904); the suspension side plates (903) are symmetrical in front and back; the suspension upper wing plate (902) is fixedly connected to the front and rear two suspension side plates (903) and the suspension lower wing plate (904); the round tube beam (905) passes through the through hole of the front suspension side plate (903) and is fixedly connected to the rear suspension side plate (903); the suspension outer plate (901) is respectively fixedly connected to the left and right sides of the suspension upper wing plate (902) and the suspension lower wing plate (904).

7. The frame structure of the extended-range mining dump truck according to claim 1, characterized in that: The range extender front fixing seat (12) is composed of a fixing plate (1201), a lower fixing plate (1202), a side fixing plate (1203), and a connecting plate (1204); the lower end of the fixing plate (1201) is vertically fixed to the right end surface of the lower fixing plate (1202), the upper end of the side fixing plate (1203) is vertically fixed to the left end surface of the lower fixing plate (1202), and the front and rear of the side fixing plate (1203) are respectively fixed to the connecting plate (1204); The range extender rear fixing seat (13) is composed of a fixing plate (1301), a lower fixing plate (1302), a mounting plate (1303), and a connecting plate (1304); the side surface of the fixing plate (1301) is fixedly connected to the side surfaces of the mounting plate (1303) and the connecting plate (1304); the front and rear of the mounting plate (1303) are respectively fixedly connected to the connecting plate (1304); and the lower end of the connecting plate (1304) is fixedly connected to the lower fixing plate (1302).

8. The frame structure of the extended-range mining dump truck according to claim 1, characterized in that: The electric drive system fixing seat (14) is composed of an electric drive system fixing plate (1401), an electric drive system mounting plate (1402), and a reinforcing rib plate (1403); the upper end of the electric drive system fixing plate (1401) is fixedly connected to one end of the electric drive system mounting plate (1402); and the reinforcing rib plates (1403) are respectively provided at the front and rear ends of the electric drive system mounting plate (1402).

9. The frame structure of the extended-range mining dump truck according to claim 1, characterized in that: The fuel tank bracket (15) is composed of a fuel tank bracket fixing plate (1501), a fuel tank mounting plate (1502), and a connecting plate (1503); a connecting plate (1503) is provided between the fuel tank bracket fixing plate (1501) and the fuel tank mounting plate (1502); the two connecting plates (1503) are fixedly connected at the front and rear sides of the fuel tank bracket fixing plate (1501) and the fuel tank mounting plate (1502); and the two connecting plates (1503) are distributed at the ends of both sides.

10. The frame structure of the extended-range mining dump truck according to claim 1, characterized in that: The electric control system bracket (16) is composed of an electric control system fixing plate (1601), an electric control system mounting plate (1602), and a reinforcing rib plate (1603); the upper end of the electric control system fixing plate (1601) is fixedly connected to the right end of the electric control system mounting plate (1602), the right end of the reinforcing rib plate (1603) is fixedly connected to one side of the electric control system fixing plate (1601), the upper end of the reinforcing rib plate (1603) is fixedly connected to the lower end of the electric control system mounting plate (1602), and the reinforcing rib plates (1603) are evenly distributed.

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