Mine dump truck

Abstract

A mining dump truck includes a vehicle frame, a first steering axle assembly, a second steering axle assembly, a first suspension cylinder assembly, a second suspension cylinder assembly, a first thrust rod assembly, and a second thrust rod assembly. The first steering axle assembly and the second steering axle assembly are arranged across the vehicle frame at intervals. The first suspension cylinder assembly is movably connected to the vehicle frame and the first steering axle assembly. The second suspension cylinder assembly is movably connected to the vehicle frame and the second steering axle assembly. The first thrust rod assembly is movably connected to the vehicle frame and the first steering axle assembly. The second thrust rod assembly is movably connected to the vehicle frame and the second steering axle assembly. The mining dump truck of the present invention can improve its load-bearing capacity and meet the heavy-load requirements of mining areas.

Description

Technical Field

[0001] The present invention relates to the technical field of mining machinery and equipment, and particularly to a mining dump truck. Background Art

[0002] Mining dump trucks are characterized by large load-bearing capacity, short haul distance, and high transportation efficiency. They often operate in mining areas or construction sites with poor road conditions and serious overloading.

[0003] Currently, most of the mining dump trucks operating in mining areas in China adopt a 6×4 axle arrangement scheme, that is, a layout scheme of a single steering axle + double drive axles. Specifically: The axles are connected to the vehicle frame through oil and gas suspension cylinders + guiding mechanisms or leaf spring structures. The front axle is a steering axle, using mechanical or hydraulic steering; the first drive axle is connected to the gearbox through an intermediate drive shaft; the second drive axle is connected to the first drive axle through a rear drive shaft. However, the load-bearing capacity of the single steering axle is limited, resulting in the entire vehicle being unable to meet the heavy-load requirements of mining areas.

[0004] Moreover, due to most of the front axle suspensions adopting leaf spring structures, limited by the load-bearing capacity of the leaf spring structures, the tonnage of mining dump trucks is generally low, around 50 tons. And the weight of the leaf spring structure is heavy, resulting in poor comfort and high failure rates of mining dump trucks. Summary of the Invention

[0005] In view of this, the present invention provides a mining dump truck that can improve its load-bearing capacity and meet the heavy-load requirements of mining areas.

[0006] A mining dump truck includes a vehicle frame, a first steering axle assembly, a second steering axle assembly, a first suspension cylinder assembly, a second suspension cylinder assembly, a first thrust rod assembly, and a second thrust rod assembly. The first steering axle assembly and the second steering axle assembly are arranged across the vehicle frame at intervals. The first suspension cylinder assembly is movably connected between the vehicle frame and the first steering axle assembly. The second suspension cylinder assembly is movably connected between the vehicle frame and the second steering axle assembly. The first thrust rod assembly is movably connected between the vehicle frame and the first steering axle assembly. The second thrust rod assembly is movably connected between the vehicle frame and the second steering axle assembly.

[0007] In an embodiment of the present invention, the above-mentioned first suspension cylinder assembly includes a first cylinder and a second cylinder. The first cylinder and the second cylinder are arranged in the vertical direction. One end of the first cylinder is movably connected to the vehicle frame, and the other end of the first cylinder is movably connected to the first steering axle assembly. One end of the second cylinder is movably connected to the vehicle frame, and the other end of the second cylinder is movably connected to the first steering axle assembly;

[0008] The second suspension cylinder assembly includes a third oil-gas suspension cylinder and a fourth oil-gas suspension cylinder. The third cylinder and the fourth cylinder are arranged in the vertical direction. One end of the third cylinder is movably connected to the vehicle frame, and the other end of the third cylinder is movably connected to the second steering bridge assembly. One end of the fourth cylinder is movably connected to the vehicle frame, and the other end of the fourth cylinder is movably connected to the second steering bridge assembly.

[0009] In an embodiment of the present invention, the first thrust rod assembly includes a first thrust rod, a second thrust rod, a third thrust rod, and a fourth thrust rod. The first thrust rod, the second thrust rod, the third thrust rod, and the fourth thrust rod are arranged along the length direction of the vehicle frame. The first thrust rod, the second thrust rod, the third thrust rod, and the fourth thrust rod are all movably connected between the vehicle frame and the first steering bridge assembly.

[0010] The second thrust rod assembly includes a fifth thrust rod, a sixth thrust rod, a seventh thrust rod, and an eighth thrust rod. The fifth thrust rod, the sixth thrust rod, the seventh thrust rod, and the eighth thrust rod are arranged along the length direction of the vehicle frame. The fifth thrust rod, the sixth thrust rod, the seventh thrust rod, and the eighth thrust rod are all movably connected between the vehicle frame and the second steering bridge assembly.

[0011] In an embodiment of the present invention, the first thrust rod, the second thrust rod, the third thrust rod, and the fourth thrust rod are all straight rods. The first thrust rod and the second thrust rod are parallel to each other, and the first thrust rod and the second thrust rod are spaced apart in the vehicle body height direction. The third thrust rod and the fourth thrust rod are parallel to each other, and the third thrust rod and the fourth thrust rod are spaced apart in the vehicle body height direction.

[0012] In an embodiment of the present invention, a first thrust rod support and a second thrust rod support are provided on the vehicle frame, and a first connection seat and a second connection seat are provided on the first steering bridge assembly. The first thrust rod support and the second thrust rod support are spaced apart in the vehicle body width direction. One end of the first thrust rod and the second thrust rod is connected to the first thrust rod support, and the other ends of the first thrust rod and the second thrust rod are respectively connected to the first connection seat. One end of the third thrust rod and the fourth thrust rod is connected to the second thrust rod support, and the other ends of the third thrust rod and the fourth thrust rod are respectively connected to the second connection seat.

[0013] In an embodiment of the present invention, the above-mentioned fifth thrust rod and seventh thrust rod are both straight rods, the sixth thrust rod and the eighth thrust rod are both bent rods, the fifth thrust rod and the sixth thrust rod are arranged at intervals in the vehicle body height direction, and the seventh thrust rod and the eighth thrust rod are arranged at intervals in the vehicle body height direction.

[0014] In an embodiment of the present invention, the above-mentioned vehicle frame is provided with a third thrust rod support and a fourth thrust rod support, the second steering bridge assembly is provided with a third connection seat, a fourth connection seat, a fifth connection seat and a sixth connection seat, the third thrust rod support and the fourth thrust rod support are arranged at intervals in the vehicle body width direction, one end of the fifth thrust rod and the sixth thrust rod is connected to the third thrust rod support, the other ends of the fifth thrust rod and the sixth thrust rod are respectively connected to the third connection seat and the fourth connection seat, one end of the seventh thrust rod and the eighth thrust rod is connected to the fourth thrust rod support, and the other ends of the seventh thrust rod and the eighth thrust rod are respectively connected to the fifth connection seat and the sixth connection seat.

[0015] In an embodiment of the present invention, the distance between the above-mentioned fourth connection seat and the sixth connection seat is less than the distance between the third thrust rod support and the fourth thrust rod support.

[0016] In an embodiment of the present invention, the above-mentioned vehicle frame is provided with a gantry beam, the mining dump truck further includes a cross tie rod, one end of the cross tie rod is movably connected to the gantry beam, and the other end of the cross tie rod is movably connected to the first steering bridge assembly.

[0017] In an embodiment of the present invention, the above-mentioned first steering bridge assembly includes a first steering bridge, a first universal joint, a second universal joint, a first balance rod and a first upper link; the first universal joint and the second universal joint are both movably connected to both ends of the first steering bridge, the first balance rod is movably connected between the first universal joint and the second universal joint, and the first upper link is fixedly connected to the second universal joint;

[0018] The second steering bridge assembly includes a second steering bridge, a third universal joint, a fourth universal joint, a second balance rod and a second upper link, the third universal joint and the fourth universal joint are both movably connected to both ends of the second steering bridge, the second balance rod is movably connected between the third universal joint and the fourth universal joint, and the second upper link is fixedly connected to the fourth universal joint;

[0019] The mining dump truck further includes a straight tie rod, the first upper link and the second upper link are arranged oppositely, one end of the straight tie rod is fixedly connected to the first upper link, and the other end of the straight tie rod is fixedly connected to the second upper link.

[0020] The dump truck of the present invention adopts an axle arrangement scheme with double front axles. That is: the first steering axle assembly and the second steering axle assembly are arranged across the vehicle frame at intervals. The first suspension cylinder assembly is movably connected to the vehicle frame and the first steering axle assembly, the second suspension cylinder assembly is movably connected to the vehicle frame and the second steering axle assembly, the first thrust rod assembly is movably connected to the vehicle frame and the first steering axle assembly, and the second thrust rod assembly is movably connected to the vehicle frame and the second steering axle assembly. It can improve the load-carrying capacity of the whole vehicle and meet the heavy-load requirements of the mining area. Brief Description of the Drawings

[0021] Figure 1 It is a partial side view structural schematic diagram of the dump truck of the present invention.

[0022] Figure 2 It is a partial bottom view structural schematic diagram of the dump truck of the present invention.

[0023] Figure 3 It is Figure 2 a structural schematic diagram from another perspective of Detailed Description of the Invention

[0024] Figure 1 It is a partial side view structural schematic diagram of the dump truck of the present invention, Figure 2 It is a partial bottom view structural schematic diagram of the dump truck of the present invention, Figure 3 It is Figure 2 a structural schematic diagram from another perspective of Figures 1 to 3 Refer to

[0025] The dump truck for mining use of the present invention adopts an axle arrangement scheme with double front axles. That is: the first steering axle assembly 12 and the second steering axle assembly 13 are arranged across the frame 11 at intervals. The first suspension cylinder assembly 14 is movably connected between the frame 11 and the first steering axle assembly 12, the second suspension cylinder assembly 15 is movably connected between the frame 11 and the second steering axle assembly 13, the first thrust rod assembly 16 is movably connected between the frame 11 and the first steering axle assembly 12, and the second thrust rod assembly 17 is movably connected between the frame 11 and the second steering axle assembly 13. It can improve the load-bearing capacity of the whole vehicle and meet the heavy-load requirements in the mining area.

[0026] Further, the first suspension cylinder assembly 14 includes a first oil cylinder and a second oil cylinder. The first oil cylinder and the second oil cylinder are arranged vertically. One end of the first oil cylinder is movably connected to the frame 11, and the other end of the first oil cylinder is movably connected to the first steering axle assembly 12. One end of the second oil cylinder is movably connected to the frame 11, and the other end of the second oil cylinder is movably connected to the first steering axle assembly 12. In this embodiment, the frame 11 is fixed with a first oil and gas suspension cylinder mounting seat 141 and a second oil and gas suspension cylinder mounting seat. The first oil and gas suspension cylinder mounting seat 141 and the second oil and gas suspension cylinder mounting seat are respectively welded under the longitudinal beams on the left and right sides of the frame 11. Of course, the first oil and gas suspension cylinder mounting seat 141 and the second oil and gas suspension cylinder mounting seat can also be riveted to the frame 11.

[0027] Among them, the first oil cylinder corresponds to the first oil and gas suspension cylinder mounting seat 141, and the second oil cylinder corresponds to the second oil and gas suspension cylinder mounting seat. The weight of the front part of the dump truck for mining use is shared by the first oil cylinder and the second oil cylinder, and the stress at each stress point is relatively low, and the structure is more reliable. In this embodiment, the first oil and gas suspension cylinder mounting seat 141 and the second oil and gas suspension cylinder mounting seat are each provided with a set of mounting holes; the left and right ends of the first steering axle 121 are also provided with a third oil and gas suspension cylinder mounting seat and a fourth oil and gas suspension cylinder mounting seat. The first oil cylinder also corresponds to the third oil and gas suspension cylinder mounting seat, and the second oil cylinder also corresponds to the fourth oil and gas suspension cylinder mounting seat. The third oil and gas suspension cylinder mounting seat and the fourth oil and gas suspension cylinder mounting seat are each provided with a set of mounting holes; the two ends of the first oil cylinder and the second oil cylinder are respectively installed in each mounting hole with a pin shaft. The two ends of the first oil cylinder and the second oil cylinder can also rotate around the axis of the pin shaft, allowing the first steering axle assembly 12 to move up and down relative to the main body of the frame 11.

[0028] Furthermore, the second suspension cylinder assembly 15 includes a third oil-gas suspension cylinder and a fourth oil-gas suspension cylinder. The third cylinder and the fourth cylinder are arranged vertically. One end of the third cylinder is movably connected to the vehicle frame 11, and the other end of the third cylinder is movably connected to the second steering bridge assembly 13. One end of the fourth cylinder is movably connected to the vehicle frame 11, and the other end of the fourth cylinder is movably connected to the second steering bridge assembly 13. In this embodiment, the vehicle frame 11 is fixed with a fifth oil-gas suspension cylinder mounting seat 151 and a sixth oil-gas suspension cylinder mounting seat. The fifth oil-gas suspension cylinder mounting seat 151 and the sixth oil-gas suspension cylinder mounting seat are respectively welded under the longitudinal beams on the left and right sides of the vehicle frame 11. Of course, the fifth oil-gas suspension cylinder mounting seat 151 and the sixth oil-gas suspension cylinder mounting seat can also be riveted to the vehicle frame 11.

[0029] Among them, the third cylinder corresponds to the fifth oil-gas suspension cylinder mounting seat 151, and the fourth cylinder corresponds to the sixth oil-gas suspension cylinder mounting seat. The third cylinder and the fourth cylinder share the weight in the middle of the mining dump truck, and the stress at each stress point is relatively low, and the structure is more reliable. In this embodiment, each of the fifth oil-gas suspension cylinder mounting seat 151 and the sixth oil-gas suspension cylinder mounting seat is provided with a set of mounting holes; the left and right ends of the second steering bridge 131 are also provided with a seventh oil-gas suspension cylinder mounting seat and an eighth oil-gas suspension cylinder mounting seat. The third cylinder also corresponds to the seventh oil-gas suspension cylinder mounting seat, and the fourth cylinder also corresponds to the eighth oil-gas suspension cylinder mounting seat. Each of the seventh oil-gas suspension cylinder mounting seat and the eighth oil-gas suspension cylinder mounting seat is provided with a set of mounting holes; the two ends of the third cylinder and the fourth cylinder are respectively installed in the respective mounting holes with pin shafts. The two ends of the third cylinder and the fourth cylinder can also rotate around the axis of the pin shaft, allowing the second steering bridge assembly 13 to move up and down relative to the main body of the vehicle frame 11.

[0030] Furthermore, the first thrust rod assembly 16 includes a first thrust rod 161, a second thrust rod 162, a third thrust rod 163 and a fourth thrust rod. The first thrust rod 161, the second thrust rod 162, the third thrust rod 163 and the fourth thrust rod are arranged along the length direction of the vehicle frame 11. The first thrust rod 161, the second thrust rod 162, the third thrust rod 163 and the fourth thrust rod are all movably connected between the vehicle frame 11 and the first steering bridge assembly 12. Among them, the first thrust rod 161, the second thrust rod 162, the third thrust rod 163 and the fourth thrust rod can rotate in the up and down direction relative to the vehicle frame 11 or the first steering bridge assembly 12 to allow the first steering bridge assembly 12 to move up and down relative to the vehicle frame 11. And, the first thrust rod 161, the second thrust rod 162, the third thrust rod 163 and the fourth thrust rod can limit the displacement of the first steering bridge 121 along the front and rear direction of the vehicle frame 11. At the same time, the first thrust rod 161, the second thrust rod 162, the third thrust rod 163 and the fourth thrust rod can bear the longitudinal force (the force in the front and rear direction) on the tires generated by the road resistance and the braking of the mining dump truck during driving.

[0031] Further, the second thrust rod assembly 17 includes a fifth thrust rod 171, a sixth thrust rod 172, a seventh thrust rod 173, and an eighth thrust rod 174. The fifth thrust rod 171, the sixth thrust rod 172, the seventh thrust rod 173, and the eighth thrust rod 174 are arranged along the length direction of the vehicle frame 11. The fifth thrust rod 171, the sixth thrust rod 172, the seventh thrust rod 173, and the eighth thrust rod 174 are all movably connected between the vehicle frame 11 and the second steering bridge assembly 13. Among them. The fifth thrust rod 171, the sixth thrust rod 172, the seventh thrust rod 173, and the eighth thrust rod 174 can rotate relative to the vehicle frame 11 or the second steering bridge assembly 13 in the up and down direction to allow the first steering bridge assembly 12 to bounce up and down relative to the vehicle frame 11. And, the fifth thrust rod 171, the sixth thrust rod 172, the seventh thrust rod 173, and the eighth thrust rod 174 can limit the displacement of the second steering bridge 131 along the front and rear direction of the vehicle frame 11. At the same time, the fifth thrust rod 171, the sixth thrust rod 172, the seventh thrust rod 173, and the eighth thrust rod 174 can bear the longitudinal force (the force in the front and rear direction) on the tire generated by the road resistance and the braking of the mining dump truck during the driving process of the mining dump truck.

[0032] Further, the first thrust rod 161, the second thrust rod 162, the third thrust rod 163, and the fourth thrust rod are all straight rods. The first thrust rod 161 and the second thrust rod 162 are parallel to each other. The first thrust rod 161 and the second thrust rod 162 are arranged at intervals along the vehicle body height direction. The third thrust rod 163 and the fourth thrust rod are parallel to each other. The third thrust rod 163 and the fourth thrust rod are arranged at intervals along the vehicle body height direction.

[0033] Further, a first thrust rod support 18 and a second thrust rod support 19 are provided on the vehicle frame 11. A first connection seat 21 and a second connection seat 22 are provided on the first steering bridge assembly 12. The first thrust rod support 18 and the second thrust rod support 19 are arranged at intervals along the vehicle body width direction. One end of the first thrust rod 161 and the second thrust rod 162 is connected to the first thrust rod support 18. The other ends of the first thrust rod 161 and the second thrust rod 162 are respectively connected to the first connection seat 21. One end of the third thrust rod 163 and the fourth thrust rod is connected to the second thrust rod support 19. The other ends of the third thrust rod 163 and the fourth thrust rod are respectively connected to the second connection seat 22.

[0034] Further, the first thrust rod support 18 is provided with two sets of mounting holes, the first connecting seat 21 is provided with two sets of mounting holes, and both ends of the first thrust rod 161 and the second thrust rod 162 are connected to the corresponding mounting holes through pin shafts, thereby realizing movable connection. The second thrust rod support 19 is provided with two sets of mounting holes, the second connecting seat 22 is provided with two sets of mounting holes, and both ends of the third thrust rod 163 and the fourth thrust rod are connected to the corresponding mounting holes through pin shafts, thereby realizing movable connection.

[0035] Further, both the fifth thrust rod 171 and the seventh thrust rod 173 are straight rods, both the sixth thrust rod 172 and the eighth thrust rod 174 are bent rods, the fifth thrust rod 171 and the sixth thrust rod 172 are arranged at intervals in the vehicle body height direction, and the seventh thrust rod 173 and the eighth thrust rod 174 are arranged at intervals in the vehicle body height direction.

[0036] Further, a third thrust rod support 23 and a fourth thrust rod support 24 are provided on the vehicle frame 11, and a third connecting seat 25, a fourth connecting seat 26, a fifth connecting seat 27 and a sixth connecting seat 28 are provided on the second steering bridge assembly 13. The third thrust rod support 23 and the fourth thrust rod support 24 are arranged at intervals in the vehicle body width direction. One end of the fifth thrust rod 171 and the sixth thrust rod 172 is connected to the third thrust rod support 23, and the other ends of the fifth thrust rod 171 and the sixth thrust rod 172 are respectively connected to the third connecting seat 25 and the fourth connecting seat 26. One end of the seventh thrust rod 173 and the eighth thrust rod 174 is connected to the fourth thrust rod support 24, and the other ends of the seventh thrust rod 173 and the eighth thrust rod 174 are respectively connected to the fifth connecting seat 27 and the sixth connecting seat 28.

[0037] Further, the third thrust rod support 23 is provided with two sets of mounting holes, the third connecting seat 25 is provided with two sets of mounting holes, the fourth connecting seat 26 is provided with two sets of mounting holes, and both ends of the fifth thrust rod 171 and the sixth thrust rod 172 are connected to the corresponding mounting holes through pin shafts, thereby realizing movable connection. The fourth thrust rod support 24 is provided with two sets of mounting holes, the fifth connecting seat 27 is provided with two sets of mounting holes, the sixth connecting seat 28 is provided with two sets of mounting holes, and both ends of the seventh thrust rod 173 and the eighth thrust rod 174 are connected to the corresponding mounting holes through pin shafts, thereby realizing movable connection.

[0038] Further, the distance between the fourth connecting seat 26 and the sixth connecting seat 28 is less than the distance between the third thrust rod support 23 and the fourth thrust rod support 24. Since the distance between the fourth connecting seat 26 and the sixth connecting seat 28 is less than the distance between the third thrust rod support 23 and the fourth thrust rod support 24, when one end of the sixth thrust rod 172 is connected to the third thrust rod support 23 and the other end of the sixth thrust rod 172 is connected to the fourth connecting seat 26; when one end of the eighth thrust rod 174 is connected to the fourth thrust rod support 24 and the other end of the eighth thrust rod 174 is respectively connected to the sixth connecting seat 28, the sixth thrust rod 172 and the eighth thrust rod 174 form a V shape, which can ensure the design space.

[0039] Further, a gantry beam (not shown in the figure) is provided on the vehicle frame 11, and the mining dump truck further includes a cross tie rod (not shown in the figure). One end of the cross tie rod is movably connected to the gantry beam, and the other end of the cross tie rod is movably connected to the first steering bridge assembly 12. The gantry beam is provided with a receiving groove for cooperating with the cross tie rod, and one end of the cross tie rod is movably connected to the left side of the gantry beam. Specifically, both ends of the gantry beam are respectively welded under the longitudinal beams on the left and right sides of the vehicle frame 11 and are located above the first steering bridge assembly 12. At the same time, a set of cross tie rod mounting holes are provided under the left side of the gantry beam, and a set of cross tie rod mounting holes are also provided on the right side of the first steering bridge assembly 12. Both ends of the cross tie rod are respectively mounted on the cross push rod mounting holes with pin shafts. The cross tie rod can rotate around the axis of the pin shaft, allowing the first steering bridge assembly 12 to move up and down relative to the vehicle frame 11, and the cross tie rod is used to limit the displacement of the first steering bridge assembly 12 in the left and right directions.

[0040] Further, when the mining dump truck is in the no-load state, the first thrust rod 161, the second thrust rod 162, the third thrust rod 163, the fourth thrust rod and the cross tie rod are inclined downward on the side facing the first steering bridge assembly 12; when the dump truck is in the full-load state, the first thrust rod 161, the second thrust rod 162, the third thrust rod 163, the fourth thrust rod and the cross tie rod are in a horizontal state, and the cross tie rod is received in the receiving groove of the gantry beam of the vehicle frame 11. This can improve the driving comfort of the whole vehicle. Moreover, the reduction of the yaw amount of the vehicle frame 11 relative to the ground will also reduce the swing angle of the suspension joint bearing, thereby improving the service life of the entire suspension system, especially the service life of the joint bearing of the suspension system.

[0041] Further, the first steering bridge assembly 12 includes a first steering bridge 121, a first universal joint 122, a second universal joint 123, a first balance rod 124 and a first upper link 125; the first universal joint 122 and the second universal joint 123 are both movably connected to both ends of the first steering bridge 121, the first balance rod 124 is movably connected between the first universal joint 122 and the second universal joint 123, and the first upper link 125 is fixedly connected to the second universal joint 123.

[0042] Further, the second steering axle assembly 13 includes a second steering axle 131, a third universal joint 132, a fourth universal joint 133, a second balance rod 134, and a second upper link 135. The third universal joint 132 and the fourth universal joint 133 are both movably connected to both ends of the second steering axle 131. The second balance rod 134 is movably connected between the third universal joint 132 and the fourth universal joint 133. The second upper link 135 is fixedly connected to the fourth universal joint 133.

[0043] Further, as Figure 3 shown, the mining dump truck further includes a drag link 29. The first upper link 125 and the second upper link 135 are arranged opposite to each other. One end of the drag link 29 is fixedly connected to the first upper link 125, and the other end of the drag link 29 is fixedly connected to the second upper link 135. Thereby ensuring the synchronous steering of the first steering axle assembly 12 and the second steering axle assembly 13.

[0044] Further, the mining dump truck further includes at least one drive axle. In this embodiment, the mining dump truck includes two drive axles, and each drive axle is respectively connected to the vehicle frame 11 through leaf springs or suspension cylinders.

[0045] For other structures of the mining dump truck, please refer to the prior art and will not be elaborated here.

[0046] Finally, several points should be noted: First, in the description of the present application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense, which can be a mechanical connection or an electrical connection, or the communication inside two components, and can be directly connected. "Up", "down", "left", "right", etc. are only used to represent the relative position relationship. When the absolute position of the described object changes, the relative position relationship may change.

[0047] Second, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, various simple modifications can be made to the technical solutions of the present invention, and these simple modifications all belong to the protection scope of the present invention. Among the various specific technical features described in the above specific embodiments, they can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the present invention will not separately describe various possible combination methods.

[0048] Finally, the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A mining dump truck, characterized in that, It includes a vehicle frame (11), a first steering axle assembly (12), a second steering axle assembly (13), a first suspension cylinder assembly (14), a second suspension cylinder assembly (15), a first thrust rod assembly (16) and a second thrust rod assembly (17). The first steering axle assembly (12) and the second steering axle assembly (13) are arranged across the vehicle frame (11) at intervals. The first suspension cylinder assembly (14) is movably connected between the vehicle frame (11) and the first steering axle assembly (12). The second suspension cylinder assembly (15) is movably connected between the vehicle frame (11) and the second steering axle assembly (13). The first thrust rod assembly (16) is movably connected between the vehicle frame (11) and the first steering axle assembly (12). The second thrust rod assembly (17) is movably connected between the vehicle frame (11) and the second steering axle assembly (13). The first steering axle assembly (12) and the second steering axle assembly (13) are the double front axles of the mining dump truck. The first suspension cylinder assembly (14) includes a first cylinder and a second cylinder. The first cylinder and the second cylinder are arranged vertically. One end of the first cylinder is movably connected to the vehicle frame (11), and the other end of the first cylinder is movably connected to the first steering axle assembly (12). One end of the second cylinder is movably connected to the vehicle frame (11), and the other end of the second cylinder is movably connected to the first steering axle assembly (12). The second suspension cylinder assembly (15) includes a third cylinder and a fourth cylinder. The third cylinder and the fourth cylinder are arranged vertically. One end of the third cylinder is movably connected to the vehicle frame (11), and the other end of the third cylinder is movably connected to the second steering axle assembly (13). One end of the fourth cylinder is movably connected to the vehicle frame (11), and the other end of the fourth cylinder is movably connected to the second steering axle assembly (13). The first thrust rod assembly (16) includes a first thrust rod (161), a second thrust rod (162), a third thrust rod (163) and a fourth thrust rod. The first thrust rod (161), the second thrust rod (162), the third thrust rod (163) and the fourth thrust rod are arranged along the length direction of the vehicle frame (11). The first thrust rod (161), the second thrust rod (162), the third thrust rod (163) and the fourth thrust rod are all movably connected between the vehicle frame (11) and the first steering bridge assembly (12). The first thrust rod (161), the second thrust rod (162), the third thrust rod (163) and the fourth thrust rod are all straight rods. The first thrust rod (161) is parallel to the second thrust rod (162). The first thrust rod (161) and the second thrust rod (162) are arranged at intervals in the vehicle body height direction. The third thrust rod (163) is parallel to the fourth thrust rod. The third thrust rod (163) and the fourth thrust rod are arranged at intervals in the vehicle body height direction. When the mining dump truck is in the no-load state, the first thrust rod (161), the second thrust rod (162), the third thrust rod (163) and the fourth thrust rod are inclined downward on the side facing the first steering bridge assembly (12). When the mining dump truck is in the full-load state, the first thrust rod (161), the second thrust rod (162), the third thrust rod (163) and the fourth thrust rod are in a horizontal state.

2. The mining dump truck according to claim 1, wherein The second thrust rod assembly (17) includes a fifth thrust rod (171), a sixth thrust rod (172), a seventh thrust rod (173) and an eighth thrust rod (174). The fifth thrust rod (171), the sixth thrust rod (172), the seventh thrust rod (173) and the eighth thrust rod (174) are arranged along the length direction of the vehicle frame (11). The fifth thrust rod (171), the sixth thrust rod (172), the seventh thrust rod (173) and the eighth thrust rod (174) are all movably connected between the vehicle frame (11) and the second steering bridge assembly (13).

3. The dump truck for mining as claimed in claim 2, wherein, A first thrust rod support (18) and a second thrust rod support (19) are provided on the vehicle frame (11). A first connection seat (21) and a second connection seat (22) are provided on the first steering axle assembly (12). The first thrust rod support (18) and the second thrust rod support (19) are arranged at intervals in the vehicle body width direction. One ends of the first thrust rod (161) and the second thrust rod (162) are connected to the first thrust rod support (18), and the other ends of the first thrust rod (161) and the second thrust rod (162) are respectively connected to the first connection seat (21). One ends of the third thrust rod (163) and the fourth thrust rod are connected to the second thrust rod support (19), and the other ends of the third thrust rod (163) and the fourth thrust rod are respectively connected to the second connection seat (22).

4. The dump truck for mining according to claim 2, characterized in that, Both the fifth thrust rod (171) and the seventh thrust rod (173) are straight rods, both the sixth thrust rod (172) and the eighth thrust rod (174) are bent rods. The fifth thrust rod (171) and the sixth thrust rod (172) are arranged at intervals in the vehicle body height direction. The seventh thrust rod (173) and the eighth thrust rod (174) are arranged at intervals in the vehicle body height direction.

5. The dump truck for mining as claimed in claim 4, wherein, A third thrust rod support (23) and a fourth thrust rod support (24) are provided on the vehicle frame (11). A third connection seat (25), a fourth connection seat (26), a fifth connection seat (27) and a sixth connection seat (28) are provided on the second steering axle assembly (13). The third thrust rod support (23) and the fourth thrust rod support (24) are arranged at intervals in the vehicle body width direction. One ends of the fifth thrust rod (171) and the sixth thrust rod (172) are connected to the third thrust rod support (23), and the other ends of the fifth thrust rod (171) and the sixth thrust rod (172) are respectively connected to the third connection seat (25) and the fourth connection seat (26). One ends of the seventh thrust rod (173) and the eighth thrust rod (174) are connected to the fourth thrust rod support (24), and the other ends of the seventh thrust rod (173) and the eighth thrust rod (174) are respectively connected to the fifth connection seat (27) and the sixth connection seat (28).

6. The dump truck for mining as claimed in claim 5, wherein, The distance between the fourth connection seat (26) and the sixth connection seat (28) is less than the distance between the third thrust rod support (23) and the fourth thrust rod support (24).

7. The dump truck for mining as claimed in claim 1, wherein, A gantry beam is provided on the vehicle frame (11). The mining dump truck further includes a cross tie rod. One end of the cross tie rod is movably connected to the gantry beam, and the other end of the cross tie rod is movably connected to the first steering axle assembly (12).

8. The dump truck for mining as claimed in claim 1, wherein, The first steering axle assembly (12) includes a first steering axle, a first universal joint (122), a second universal joint (123), a first balance bar (124) and a first upper link (125); the first universal joint (122) and the second universal joint (123) are both movably connected to two ends of the first steering axle, the first balance bar (124) is movably connected between the first universal joint (122) and the second universal joint (123), and the first upper link (125) is fixedly connected to the second universal joint (123); The second steering axle assembly (13) includes a second steering axle, a third universal joint (132), a fourth universal joint (133), a second balance bar (134) and a second upper link (135), the third universal joint (132) and the fourth universal joint (133) are both movably connected to two ends of the second steering axle, the second balance bar (134) is movably connected between the third universal joint (132) and the fourth universal joint (133), and the second upper link (135) is fixedly connected to the fourth universal joint (133); The mining dump truck further includes a drag link (29), the first upper link (125) and the second upper link (135) are oppositely arranged, one end of the drag link (29) is fixedly connected to the first upper link (125), and the other end of the drag link (29) is fixedly connected to the second upper link (135).

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