Wide-body vehicle frame and wide-body vehicle

Abstract

The invention relates to the technical field of wide-body vehicles, and provides a wide-body vehicle frame and a wide-body vehicle, the wide-body vehicle frame comprises a longitudinal beam, a lower ring beam, a lifting cross beam, a middle cross beam, a longitudinal pull rod cross beam and a tail cross beam, and the lower ring beam, the lifting cross beam, the middle cross beam, the longitudinal pull rod cross beam and the tail cross beam are sequentially arranged along the longitudinal beam at intervals; through the structural arrangement, the whole frame is connected into a firm and reliable integrated structure, and parts, mainly generating impact and stress, such as a front suspension system, a middle suspension system, a rear suspension system, a container lifting system and a longitudinal pull rod of the wide-body vehicle are reliably and stably mounted and supported; according to the wide-body vehicle frame, stress deformation, cracking and other unstable conditions of the frame are prevented, the overall stability and reliability are further improved by further improving the main stress structure, and then the service life of the wide-body vehicle frame is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of wide-body vehicles, and in particular to a wide-body vehicle frame and a wide-body vehicle. Background Art

[0002] Wide-body vehicles generally refer to large transport vehicles with wider bodies. For example, wide-body mining vehicles are heavy-duty off-road dump trucks, which are mainly used in open-pit coal mines, stone mines and other transportation industries. The maximum total weight of a wide-body vehicle can reach about 150 tons, and the daily operating load is large. In addition, the roads in the mining area are steep and muddy and bumpy. In short, the operating environment of wide-body mining vehicles is very harsh. The frame is the core component of the wide-body vehicle. It needs to carry and install the vehicle's cab, powertrain, front, middle and rear suspension systems, cargo box lifting system and cargo box, etc., and the impact from the road surface and the fully loaded cargo box when operating in the mining area will be transmitted to the frame. Therefore, the frame structure design of the wide-body vehicle is very critical.

[0003] At present, wide-body vehicles in the industry generally use riveted flexible frames and welded rigid frames. The longitudinal beams of the riveted flexible frames are generally composed of double-layer steel plates bent into a C shape, and the cross beams and longitudinal beams are connected and fixed by rivets. This type of frame has a small load-bearing capacity and is generally used in commercial dump trucks traveling on roads. It has poor adaptability to working conditions in mining areas and often has problems such as deformation, distortion, cracking and even breakage, and has a short overall service life. The welded rigid frame is made of welded steel plates, which has high requirements for welding processability. In addition, the frame may have mismatched steel plate selection during design, and the longitudinal beam, cross beam layout and support structure design may be unreasonable, resulting in sudden cross-sectional changes, weld accumulation, and high local structural stress. This will lead to problems such as weld cracking and longitudinal beam breakage, which will affect the normal use of the wide-body vehicle and reduce its service life. Summary of the invention

[0004] The technical problem to be solved by the present invention is: how to improve the structural stability and service life of a wide-body vehicle frame.

[0005] The present invention provides a wide-body vehicle frame, comprising a longitudinal beam, and a lower ring beam, a lifting beam, an intermediate beam, a longitudinal tie rod beam, and a tail beam sequentially arranged along the longitudinal beam, and further comprising a front suspension mounting seat, a middle suspension mounting seat, and a rear suspension mounting seat, wherein:

[0006] The lower ring beam is a U-shaped box structure as a whole, the two upper ends of the lower ring beam are respectively connected to the two longitudinal beams, and the two front suspension mounting seats are respectively connected to the outer sides of the two upper ends of the lower ring beam;

[0007] The lifting crossbeam comprises a first round cross tube, a first door-shaped box body and a second round cross tube which are connected in sequence, the two ends of the first round cross tube respectively penetrate and are connected to the two longitudinal beams, and the two ends of the second round cross tube are respectively used for articulating two lifting cylinders of the cargo box of the wide-body vehicle;

[0008] The middle cross beam is connected between the two longitudinal beams, and the two middle suspension mounting seats are respectively connected to the outer sides of the two longitudinal beams and are located at two ends of the middle cross beam;

[0009] The longitudinal tie rod cross beam comprises a third round transverse tube and a second door-shaped box body connected to each other, the two ends of the third round transverse tube respectively penetrate and are connected to the two longitudinal beams, and the lower end of the second door-shaped box body is used to connect the longitudinal tie rod of the wide-body vehicle;

[0010] The tail cross beam is connected between the two longitudinal beams and is located at the tail end of the longitudinal beams. The two rear suspension mounting seats are respectively connected to the outer sides of the two longitudinal beams and are located at the two ends of the tail cross beam. The tail ends of the two longitudinal beams are used to hinge the cargo box.

[0011] Optionally, the longitudinal beam is a box beam structure welded together by a top plate, two side plates and a bottom plate, the side plates are provided with mounting holes compatible with the first circular transverse tube and the third circular transverse tube, the first circular transverse tube and the third circular transverse tube are welded to the mounting holes, and a lining plate is also welded on the side plate on the inner side of the longitudinal beam at the position of the mounting holes.

[0012] Optionally, the wide-body vehicle frame further comprises a diagonal tie rod mounting seat, the bottom plate has a protruding structure protruding toward the side, and the diagonal tie rod mounting seat is welded to the bottom plate and is located at the bottom of the protruding structure.

[0013] Optionally, a reinforcing plate is welded inside the longitudinal beam, and the reinforcing plate is located at at least one corresponding position among the front suspension mounting seat, the middle suspension mounting seat, the rear suspension mounting seat and the diagonal rod mounting seat.

[0014] Optionally, the wide-body vehicle frame further comprises a front cross beam, the front cross beam is welded to the front end bottom of the longitudinal beam, and an inclined plate is extended toward the rear at the connection between the front cross beam and the longitudinal beam.

[0015] Optionally, the wide-body vehicle frame further includes a mounting platform, two mounting platforms are respectively welded to the two upper ends of the lower ring beam, and the mounting platform is welded to the top of the longitudinal beam, and the front suspension mounting seat is welded to the connection between the lower ring beam and the mounting platform.

[0016] Optionally, the tail cross beam includes a box-type cross beam and an arc-shaped plate, the two ends of the box-type cross beam are respectively welded to the inner sides of the two longitudinal beams, the arc-shaped plate is located at the connection between the box-type cross beam and the longitudinal beam, the arc-shaped plate is respectively welded to the inner sides of the box-type cross beam and the longitudinal beam, and the weld between the arc-shaped plate and the longitudinal beam presents a wavy line structure.

[0017] Optionally, the first door-shaped box body and the second door-shaped box body are both closed box structures formed by welding of plates, the first door-shaped box body includes a first side mounting plate, and the two first side mounting plates are symmetrically welded to the bottom of the two longitudinal beams, the second door-shaped box body includes a second side mounting plate, and the two second side mounting plates are symmetrically welded to the bottom of the two longitudinal beams, and the connecting end of the first side mounting plate and the longitudinal beam and the connecting end of the second side mounting plate and the longitudinal beam are both provided with an arc structure extending along the length direction of the longitudinal beam.

[0018] Optionally, the lifting beam further includes ribs, which are respectively welded to the first side mounting plate and the second round transverse tube.

[0019] Compared with the prior art, the wide-body vehicle frame provided by the present invention has the following technical effects:

[0020] The wide-body vehicle frame provided by the present invention can be applied to wide-body vehicles, such as heavy-duty off-road dump trucks for mining. By setting a lower ring beam with a U-shaped box structure and connecting the two upper ends of the lower ring beam to the two longitudinal beams respectively, the lower ring beam can be used as a mounting structure for a mechanism located at the front of the wide-body vehicle, such as a driving mechanism of the wide-body vehicle. At the same time, by connecting the front suspension mounting seat to the lower ring beam, a stable support and mounting structure can be provided for the front suspension system of the wide-body vehicle. In addition, by setting the lifting crossbeam as a first round cross tube, a first door-shaped box body and a second round cross tube, The two ends of the second round cross tube can provide an articulated structure of two lifting cylinders for the cargo box of the wide-body vehicle, which can replace the lifting structure of a lifting cylinder in the related technology. The lifting and unloading operation of the cargo box is more stable and reliable. At the same time, through the structural setting of the first door-shaped box body, the door shape can be used as a passage for the transmission mechanism of the wide-body vehicle, and the box body structure is more stable and reliable. The round cross tube can adapt to and bear the variable and variable bearing force during the lifting process to prevent the overall deformation of the frame. Accordingly, by setting the longitudinal tie rod cross beam as the third round cross tube and The second door-shaped box connection structure, the door-shaped box structure can also be used as a reliable and stable load-bearing and supporting structure, while leaving space for the installation and passage of other components, and can be used as an installation support structure for the longitudinal tie rod of a wide-body vehicle. The third round cross tube is connected to the longitudinal beam, which can stably and reliably transfer the impact and load transmitted by the longitudinal tie rod to the longitudinal beam, and at the same time prevent the frame from being deformed after being subjected to force and other unstable situations. Moreover, by connecting the middle cross beam between the two longitudinal beams and connecting the middle suspension mounting seat to the longitudinal beam at both ends of the middle cross beam, the middle suspension mounting seat can be used to install the middle suspension system of the wide-body vehicle, and the middle cross beam can be used as a further load-bearing support structure between the two longitudinal beams, which can more reliably bear the impact and stress brought by the middle suspension system, and further prevent the stress deformation of the longitudinal beam. At the same time, by connecting the tail cross beam to the tail of the longitudinal beam, that is, the position where the longitudinal beam is articulated to the cargo box of the wide-body vehicle, the cargo box can be better carried. At the same time, the tails of the two longitudinal beams are closed and connected, so that the frame as a whole has a frame structure, which further improves the load-bearing capacity and stability of the frame. Through the above-mentioned structural arrangement, the lower ring beam, lifting beam, middle beam, longitudinal tie rod beam and tail beam are respectively connected to the two longitudinal beams at intervals, and the front suspension mounting seat, middle suspension mounting seat and rear suspension mounting seat are reasonably arranged, so that the overall connection of the frame is a firm and reliable integrated structure, and the front, middle and rear suspension systems and cargo box lifting system, longitudinal tie rods and other components that mainly generate impact and stress of the wide-body vehicle are all reliably and stably installed and supported, preventing the frame from generating stress deformation, cracking and other unstable situations, and through further improvement of the main force-bearing structure, the overall stability and reliability are further improved, thereby increasing the service life of the wide-body vehicle frame.

[0021] In addition, the present invention also provides a wide-body vehicle, comprising the wide-body vehicle frame described above.

[0022] Compared with the related art, the wide-body vehicle provided by the present invention has substantially the same technical effect as the above-mentioned wide-body vehicle frame by providing a wide-body vehicle frame, which will not be described in detail herein. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of a wide-body vehicle frame according to an embodiment of the present invention;

[0024] Figure 2 It is a schematic diagram of the three-dimensional structure of the wide-body vehicle frame from another angle according to an embodiment of the present invention;

[0025] Figure 3 It is a schematic diagram of the three-dimensional structure of the longitudinal beam according to an embodiment of the present invention;

[0026] Figure 4 It is a schematic diagram of the planar structure of the longitudinal beam according to an embodiment of the present invention;

[0027] Figure 5 Schematic diagram of the cross-sectional structure of a longitudinal beam according to an embodiment of the present invention;

[0028] Figure 6 It is a partial structural schematic diagram of a wide-body vehicle frame according to an embodiment of the present invention;

[0029] Figure 7 It is a schematic diagram of another part of the structure of the wide-body vehicle frame according to an embodiment of the present invention;

[0030] Figure 8 It is a schematic diagram of another part of the structure of the wide-body vehicle frame according to an embodiment of the present invention.

[0031] Description of reference numerals:

[0032] 10-longitudinal beam, 11-top plate, 111-reserved mounting seat, 12-side plate, 121-mounting hole, 122-lining plate, 13-bottom plate, 131-raised structure, 20-front cross beam, 21-inclined plate, 30-lower ring beam, 40-lifting cross beam, 41-first round cross tube, 42-first door-shaped box, 421-first side mounting plate, 43-second round cross tube, 44-rib plate, 50-middle cross beam, 60-longitudinal tie rod cross beam, 61 -The third circular cross tube, 62-the second door-shaped box body, 621-the second side mounting plate, 622-the vertical plate, 623-the door-shaped arc plate, 624-the L-shaped transition plate, 625-the longitudinal tie rod mounting seat, 70-the tail cross beam, 71-the box-type cross beam, 72-the arc plate, 73-the wiring tube, 81-the front suspension mounting seat, 82-the middle suspension mounting seat, 83-the rear suspension mounting seat, 84-the diagonal tie rod mounting seat, 85-the cargo box articulated seat, 90-the mounting platform. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0034] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein.

[0035] In the description of the present invention, the directions or positional relationships indicated by "upper", "lower", "left", "right", "top", "bottom", "front", "back", "inside" and "outside" are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present invention. At the same time, a coordinate system XYZ is set herein, wherein the positive direction of the X-axis represents the left direction, the reverse direction of the X-axis represents the right direction, the positive direction of the Y-axis represents the front direction, the reverse direction of the Y-axis represents the back direction, the positive direction of the Z-axis represents the top, and the reverse direction of the Z-axis represents the bottom.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In the description of this specification, the description with reference to the terms "embodiment", "one embodiment" and "one implementation" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or implementation are included in at least one embodiment or implementation of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or implementation. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or implementations in a suitable manner.

[0038] To solve the above technical problems, Figure 1 and Figure 2As shown, an embodiment of the present invention provides a wide-body vehicle frame, including a longitudinal beam 10 and a lower ring beam 30, a lifting beam 40, an intermediate beam 50, a longitudinal tie rod beam 60, and a tail beam 70 sequentially arranged along the longitudinal beam 10, and also including a front suspension mounting seat 81, a middle suspension mounting seat 82 and a rear suspension mounting seat 83, wherein:

[0039] The lower ring beam 30 is a U-shaped box structure as a whole, and the two upper ends of the lower ring beam 30 are respectively connected to the two longitudinal beams 10, and the two front suspension mounting seats 81 are respectively connected to the outer sides of the two upper ends of the lower ring beam 30;

[0040] The lifting crossbeam 40 includes a first round cross tube 41, a first door-shaped box 42 and a second round cross tube 43 which are connected in sequence. The two ends of the first round cross tube 41 respectively penetrate and are connected to the two longitudinal beams 10. The two ends of the second round cross tube 43 are respectively used for articulating two lifting cylinders of the cargo box of the wide-body vehicle.

[0041] The middle cross beam 50 is connected between the two longitudinal beams 10 , and the two middle suspension mounting seats 82 are respectively connected to the outer sides of the two longitudinal beams 10 and are located at both ends of the middle cross beam 50 ;

[0042] The longitudinal tie rod cross beam 60 includes a third round transverse tube 61 and a second door-shaped box body 62 connected to each other. The two ends of the third round transverse tube 61 respectively penetrate and are connected to the two longitudinal beams 10. The lower end of the second door-shaped box body 62 is used to connect the longitudinal tie rod of the wide-body vehicle.

[0043] The tail cross beam 70 is connected between the two longitudinal beams 10 and is located at the tail end of the longitudinal beam 10. The two rear suspension mounting seats 83 are respectively connected to the outer sides of the two longitudinal beams 10 and are located at the two ends of the tail cross beam 70. The tail ends of the two longitudinal beams 10 are used to hinge the cargo box.

[0044] It should be noted that the cargo box of the relevant wide-body dump truck is generally lifted by a lifting cylinder. In this case, not only the lifting stroke and lifting force of the lifting cylinder are required to be large enough, resulting in a larger volume of the lifting cylinder, but also if the material loaded in the cargo box is overloaded, the lifting system will be greatly damaged and lifting accidents are prone to occur. In the present embodiment, a lifting crossbeam 40 is provided, and the lifting crossbeam 40 is provided as a mechanism in which a first circular transverse tube 41, a first door-shaped box body 42 and a second circular transverse tube 43 are connected to each other as an integral whole. Both ends of the second circular transverse tube 43 can be used as connection ends of an articulated lifting cylinder. For example, articulated axle seats are installed at both ends of the second circular transverse tube 43 to articulate the lifting cylinder, so that a wide-body vehicle can be lifted and unloaded by two lifting cylinders, and the two lifting points are symmetrical on both sides of the frame, which not only reduces the volume and lifting force of a single lifting cylinder, but also makes the lifting and unloading at the two symmetrical lifting points more stable and reliable. At the same time, the direction of the stress of the lifting cylinder on the frame during the lifting operation is variable. For example, If it changes gradually at a certain angle, for a vehicle frame welded with conventional steel plates, it is easy for the weld to crack or deform due to stress concentration at the position where the force suddenly changes, such as the right-angle weld. By setting the structure hinged to the lifting cylinder as a second circular transverse tube 43, preferably, the upper end of the first door-shaped box body 42 is respectively welded to the bottom of the two longitudinal beams 10 and the first circular transverse tube 41, and the second circular transverse tube 43 is connected to the lower end of the first door-shaped box body 42, so that the force can be transmitted to the longitudinal beam 10, and the supporting crossbeam structure is set to the first circular transverse tube 41. The circular tube structure can stably bear stress changes in various directions, effectively prevent stress concentration, and further improve the stability of the structure. Correspondingly, both ends of the third circular transverse tube 61 pass through and are welded to the two longitudinal beams 10 respectively, the upper end of the second door-shaped box body 62 is welded to the bottom of the two longitudinal beams 10 and the third circular transverse tube 61 respectively, and the crossbeam structure welded to the longitudinal beam 10 in the longitudinal tie rod crossbeam 60 is the third circular transverse tube 61. When the longitudinal tie rod of the wide-body vehicle is working, the direction of the stress on the frame is also variable. The third circular transverse tube 61 can also prevent stress concentration from occurring here, prevent weld cracking or structural deformation, and further improve the stability and firmness of the frame.

[0045] Specifically, in this embodiment, the lower ring beam 30, the lifting beam 40, the middle beam 50, the longitudinal tie rod beam 60, the tail beam 70, the front suspension mounting seat 81, the middle suspension mounting seat 82 and the rear suspension mounting seat 83 can be connected to the longitudinal beam 10 in a welding manner, so that they are welded into a whole, and the structure is more stable and reliable. Preferably, after the ends of the first round cross tube 41 and the third round cross tube 61 pass through the longitudinal beam 10, they are welded on both sides of the longitudinal beam 10, that is, double-sided welding is performed, which can further improve the stability of the structure. At the same time, the overall frame is a left-right symmetrical structure, that is, as shown in FIG. Figure 1 and Figure 2 The coordinate system in the X-axis direction is symmetrically arranged, that is, the number of the front suspension mounting seat 81, the middle suspension mounting seat 82 and the rear suspension mounting seat 83 are two, and they are arranged symmetrically on the left and right, so that the overall structure of the frame is more stable, and there are also two cargo box articulated seats 85 for articulating the cargo box, which are respectively welded to the tails of the two longitudinal beams 10, that is, as shown in FIG. Figure 1 and Figure 2 The end of the longitudinal beam 10 pointed to by the negative direction of the Y-axis in the coordinate system in , and at the same time, the lifting beam 40 is arranged in the middle of the length direction of the longitudinal beam 10, that is, the lifting is performed approximately from the middle of the cargo box. In this way, the lifting stroke of the lifting cylinder can be further shortened, the volume of the lifting cylinder can be reduced, and the lifting and unloading operation is more stable and reliable.

[0046] In this embodiment, the wide-body vehicle frame provided in this embodiment can be applied to wide-body vehicles, such as heavy-duty off-road dump trucks for mining. By providing a lower ring beam 30 with a U-shaped box structure and connecting the two upper ends of the lower ring beam 30 to the two longitudinal beams 10 respectively, the lower ring beam 30 can be used as a mounting structure for a mechanism located at the front of the wide-body vehicle, such as a driving mechanism of the wide-body vehicle. Figure 1 and Figure 2The positive direction of the Y-axis in the coordinate system in the figure indicates the front part of the wide-body vehicle. At the same time, by connecting the front suspension mounting seat 81 to the lower ring beam 30, a stable support and mounting structure can be provided for the front suspension system of the wide-body vehicle. In addition, by setting the lifting crossbeam 40 as a connection structure of the first circular transverse tube 41, the first door-shaped box body 42 and the second circular transverse tube 43, the two ends of the second circular transverse tube 43 can provide an articulated structure of two lifting cylinders for the cargo box of the wide-body vehicle, which can replace the lifting structure of a lifting cylinder in the related technology, and the lifting and unloading operation of the cargo box is more stable and reliable. At the same time, through the structural setting of the first door-shaped box body 42, the door shape can be used as a passage for the transmission mechanism of the wide-body vehicle, for example, and the box structure is more stable and reliable. The circular transverse tube can adapt to and bear the variable and variable bearing force during the lifting process to prevent the overall deformation of the frame. Accordingly, by setting the longitudinal tie rod crossbeam 60 as a connection structure of the third circular transverse tube 61 and the second door-shaped box body 62, the door-shaped box-type structure can also be used as a reliable and stable bearing and support structure, while leaving other parts empty. The third round cross tube 61 is connected to the longitudinal beam 10, which can stably and reliably transfer the impact and load transmitted by the longitudinal beam to the longitudinal beam 10, and prevent the frame from being deformed after being stressed. In addition, by connecting the middle cross beam 50 between the two longitudinal beams 10 and connecting the middle suspension mounting seat 82 to the longitudinal beam 10 at both ends of the middle cross beam 50, the middle suspension mounting seat 82 can be used to install the wide-body vehicle. In the middle suspension system, the middle cross beam 50 can serve as a further force-bearing support structure between the two longitudinal beams 10, which can more reliably bear the impact and stress caused by the middle suspension system, and further prevent the stress deformation of the longitudinal beam 10. At the same time, by connecting the tail cross beam 70 to the tail of the longitudinal beam 10, that is, the position where the longitudinal beam 10 is articulated to the cargo box of the wide-body vehicle, the cargo box can be better carried. At the same time, the tails of the two longitudinal beams 10 are closed and connected, so that the frame as a whole has a frame structure, which further improves the load-bearing capacity and stability of the frame. Through the above-mentioned structural arrangement, the lower ring beam 30, the lifting beam 40, the middle beam 50, the longitudinal tie rod beam 60 and the tail beam 70 are respectively connected to the two longitudinal beams 10 at intervals, and the front suspension mounting seat 81, the middle suspension mounting seat 82 and the rear suspension mounting seat 83 are reasonably arranged, so that the overall connection of the frame is a firm and reliable integrated structure, and the front, middle and rear suspension systems and cargo box lifting system, longitudinal tie rods and other components that mainly generate impact and stress of the wide-body vehicle are reliably and stably installed and supported, preventing the frame from generating stress deformation, cracking and other unstable situations, and through further improvement of the main force-bearing structure, the overall stability and reliability are further improved, thereby increasing the service life of the wide-body vehicle frame.

[0047] Alternatively, if Figures 1 to 5As shown, the longitudinal beam 10 is a box beam structure welded by a top plate 11, two side plates 12 and a bottom plate 13, the side plates 12 are provided with mounting holes 121 adapted to the first circular transverse tube 41 and the third circular transverse tube 61, the first circular transverse tube 41 and the third circular transverse tube 61 are welded to the mounting holes 121, and a lining plate 122 is also welded to the side plates 12 on the inner side of the longitudinal beam 10 at the position of the mounting holes 121.

[0048] Specifically, the two longitudinal beams 10 are arranged in parallel, and the first circular transverse tube 41 and the third circular transverse tube 61 respectively correspond to four mounting holes 121. The first circular transverse tube 41 and the third circular transverse tube 61 are respectively welded to the hole wall of each mounting hole 121, thereby forming the welding surface of the first circular transverse tube 41 and the third circular transverse tube 61 on the inner and outer sides of each longitudinal beam 10, and the structure is more stable and firm. Correspondingly, the lining plate 122 is also provided with a hole structure corresponding to the first circular transverse tube 41 and the third circular transverse tube 61. The shape of the lining plate 122 can be set according to the installation space, for example, Figure 7 As shown in , the lining plate 122 is elliptical in shape, and the force is more uniform and stable. In addition, a reserved mounting seat 111 may be provided on the top plate 11, and the reserved mounting seat 111 may be used as a mounting structure for an additional crossbeam. Of course, the additional crossbeam may be added according to actual conditions, which may further improve the structural stability of the frame.

[0049] In this embodiment, by setting the longitudinal beam 10 as a box beam structure formed by welding a top plate 11, two side plates 12 and a bottom plate 13, the structure is more stable and reliable and not easy to deform. At the same time, by opening a mounting hole 121, it is convenient to install the first circular transverse tube 41 and the third circular transverse tube 61, forming a reliable through-welded structure, and by welding a lining plate 122 at the position of the mounting hole 121 on the side plate 12 on the inner side of the longitudinal beam 10, the lining plate 122 can further support and fix the first circular transverse tube 41 and the third circular transverse tube 61, thereby further improving the stability of the overall structure.

[0050] Alternatively, if Figures 1 to 5 As shown, the wide-body vehicle frame further includes a diagonal tie rod mounting seat 84 , the bottom plate 13 has a protruding structure 131 protruding toward the side, and the diagonal tie rod mounting seat 84 is welded to the bottom plate 13 at the bottom of the protruding structure 131 .

[0051] It should be noted that the diagonal tie rod mounting seat 84 is used to mount the diagonal tie rod of the wide-body vehicle. The diagonal tie rod is also one of the load-bearing components in the suspension system of the wide-body vehicle, and is generally arranged at an angle, and its stress direction is generally variable. Therefore, by arranging the protruding structure 131 on the bottom plate 13 to mount the diagonal tie rod mounting seat 84, the structure is more stable. Specifically, an inclined reinforcing rib seat is welded between the protruding structure 131 and the side plate 12, and the weld between the reinforcing rib seat and the side plate 12 is a curved structure, and the structure is more solid and reliable.

[0052] In this embodiment, a protruding structure 131 is protruded toward the side of the bottom plate 13, and the diagonal rod mounting seat 84 is welded to the bottom of the bottom plate 13 at the bottom of the protruding structure 131. In this way, the welding connection area between the diagonal rod mounting seat 84 and the bottom plate 13 is increased, thereby improving the stability of the structure.

[0053] Alternatively, if Figures 1 to 5 As shown, a reinforcing plate is welded inside the longitudinal beam 10 , and the reinforcing plate is located at at least one corresponding position among the front suspension mounting seat 81 , the middle suspension mounting seat 82 , the rear suspension mounting seat 83 and the diagonal rod mounting seat 84 .

[0054] Specifically, reinforcing plates are provided at main stress-bearing positions in the longitudinal beam 10, such as the front suspension mounting seat 81, the middle suspension mounting seat 82, the rear suspension mounting seat 83 and the diagonal rod mounting seat 84. The reinforcing plates are welded in the longitudinal beam 10 to provide further support.

[0055] In this embodiment, a reinforcing plate is welded inside the longitudinal beam 10 and is located at stress-bearing positions such as the front suspension mounting seat 81, the middle suspension mounting seat 82, the rear suspension mounting seat 83 and the diagonal rod mounting seat 84, thereby further improving the structural stability of the longitudinal beam 10, preventing the longitudinal beam 10 from deforming after being subjected to stress, thereby improving the overall service life.

[0056] Alternatively, if Figure 1 and Figure 2 As shown, the wide-body vehicle frame further includes a front cross beam 20 , which is welded to the front end bottom of the longitudinal beam 10 , and an inclined plate 21 is extended toward the rear from the connection between the front cross beam 20 and the longitudinal beam 10 .

[0057] Specifically, the front end of the longitudinal beam 10 refers to the front direction of the wide-body vehicle, that is, Figure 1 and Figure 2 The positive direction of the Y-axis in the middle coordinate system is the end where the cab of the wide-body vehicle is located. The front cross beam 20 can be used as a structure for installing the cab, and the structure is more reasonable and reliable.

[0058] In this embodiment, a front cross beam 20 is welded to the bottom of the front end of the longitudinal beam 10, and the front cross beam 20 can be used as a structure for installing components such as a cab of a wide-body vehicle. At the same time, the front ends of the two longitudinal beams 10 are welded in a closed manner, so that a closed frame structure is formed as a whole, and the structure is more stable. In addition, an inclined plate 21 is extended toward the rear at the connection between the front cross beam 20 and the longitudinal beam 10, that is, toward Figure 1 and Figure 2 An inclined plate 21 is provided in the negative direction of the Y-axis in the center coordinate system, which extends the welding area between the front cross beam 20 and the bottom of the longitudinal beam 10, that is, extends the weld. At the same time, the inclined plate 21 can also play a supporting role of the reinforcing rib plate to a certain extent, further improving the stability of the overall structure.

[0059] Alternatively, if Figure 1 and Figure 2 As shown, the wide-body vehicle frame also includes a mounting platform 90, two of the mounting platforms 90 are respectively welded to the two upper ends of the lower ring beam 30, and the mounting platform 90 is welded to the top of the longitudinal beam 10, and the front suspension mounting seat 81 is welded to the connection between the lower ring beam 30 and the mounting platform 90.

[0060] Specifically, the mounting platform 90 may be a frame structure or a box beam structure, etc., which can be used to install other components of the wide-body vehicle. The bottom surface of the mounting platform 90 is welded to the upper end surface of the lower ring beam 30 and the upper end surface of the longitudinal beam 10, that is, the top plate, at the same time, and the connection is more stable and firm. At the same time, the upper end of the lower ring beam 30 is welded to the bottom and the outer side of the longitudinal beam 10 at the same time, forming the mounting platform 90 and the lower ring beam 30 covered and welded on the longitudinal beam 10, further improving the overall stability and firmness.

[0061] In this embodiment, by welding a mounting platform 90 to the upper end of the lower ring beam 30 and the top of the longitudinal beam 10, the mounting platform 90 can be used as a structure for mounting other components of the wide-body vehicle, and the structural layout is more reasonable. At the same time, by welding the front suspension mounting seat 81 to the connection between the lower ring beam 30 and the mounting platform 90, that is, the front suspension mounting seat 81 is respectively welded to the bottom surface of the mounting platform 90 and the outer surface of the lower ring beam 30, it plays the role of a triangular support, thereby further improving the stability of the overall structure.

[0062] Alternatively, if Figure 1 , Figure 2 and Figure 6 As shown, the tail cross beam 70 includes a box-type cross beam 71 and a curved plate 72. The two ends of the box-type cross beam 71 are respectively welded to the inner sides of the two longitudinal beams 10. The curved plate 72 is located at the connection between the box-type cross beam 71 and the longitudinal beam 10. The curved plate 72 is respectively welded to the inner sides of the box-type cross beam 71 and the longitudinal beam 10, and the weld between the curved plate 72 and the longitudinal beam 10 is a wavy line structure.

[0063] Specifically, the box-type crossbeam 71 of the tail crossbeam 70 is welded by plate parts, for example, a bent C-shaped plate and a flat plate are welded to form the box-type crossbeam 71. At the same time, a circular hole is opened on the box-type crossbeam 71, and a wiring tube 73 is welded in the circular hole for threading and routing. The structural layout is more reasonable and neat.

[0064] In this embodiment, the tail cross beam 70 is set to a box-type cross beam 71 and an arc plate 72 structure, and the box-type cross beam 71 is welded to the tail of the longitudinal beam 10 to support and fix the tails of the two longitudinal beams 10 to form an overall frame structure, and further support the cargo box hinge seat 85, that is, the cargo box, so that the structure is more reasonable and reliable. At the same time, by respectively welding the arc plate 72 to the inner side of the box-type cross beam 71 and the longitudinal beam 10, stress concentration between the box-type cross beam 71 and the longitudinal beam 10 is prevented, and the stability of the support and fixation is further enhanced. In addition, by setting the weld between the arc plate 72 and the longitudinal beam 10 in a wavy line structure, not only the length of the weld is extended, but also the occurrence of stress concentration and cracking at the weld is further prevented, thereby further improving the overall structural stability and extending the service life of the frame.

[0065] Alternatively, if Figure 1 , Figure 2 , Figure 7 and Figure 8 As shown, the first door-shaped box body 42 and the second door-shaped box body 62 are both closed box-type structures formed by welding of plates, the first door-shaped box body 42 includes a first side mounting plate 421, and the two first side mounting plates 421 are symmetrically welded to the bottom of the two longitudinal beams 10, the second door-shaped box body 62 includes a second side mounting plate 621, and the two second side mounting plates 621 are symmetrically welded to the bottom of the two longitudinal beams 10, and the connecting end of the first side mounting plate 421 and the longitudinal beam 10 and the connecting end of the second side mounting plate 621 and the longitudinal beam 10 are both provided with an arc structure extending along the length direction of the longitudinal beam 10.

[0066] Specifically, the structures of the first door-shaped box body 42 and the second door-shaped box body 62 are basically the same. The difference between the two is that the bottom end of the first door-shaped box body 42 is connected to the second round horizontal tube 43, and the bottom end of the second door-shaped box body 62 is connected to the longitudinal tie rod mounting seat 625, and both are closed box-type structures formed by plate parts. Exemplarily, the second door-shaped box body 62 includes two parallel second side mounting plates 621, two parallel vertical plates 622, a door-shaped arc plate 623 and two L-shaped transition plates symmetrically arranged on the left and right. The upper ends of the two vertical plates 622 are welded to the third round transverse tube 61, the two second side mounting plates 621 are welded to the left and right sides of the vertical plates 622, and the upper ends of the second side mounting plates 621 are welded to the bottom of the longitudinal beam 10, the L-shaped transition plate 624 is welded to the connection between the vertical plates 622 and the second side mounting plates 621, and plays the role of transition connection and closing the left and right sides of the upper ends of the vertical plates 622, and the door-shaped arc plate 623 is welded to the bottoms of the two vertical plates 622 to form a closed box structure with a stable and firm structure and a reasonable layout. At the same time, the lower end of the first door-shaped box 42 can also be provided with a longitudinal tie rod mounting structure similar to the longitudinal tie rod mounting seat 625, and the structural layout is more compact and reasonable.

[0067] In this embodiment, by configuring the first door-shaped box body 42 and the second door-shaped box body 62 to be a closed box-type structure formed by welding of plates, on the one hand, the box-type structure is more stable and reliable and has better bearing capacity, and on the other hand, the door-shaped structure can free up the passage space and installation space for other transmission mechanisms such as wide-body vehicles, and the structural layout is more reasonable. At the same time, by configuring the connecting ends of the first side mounting plate 421 and the longitudinal beam 10 and the connecting ends of the second side mounting plate 621 and the longitudinal beam 10 to be provided with an arc structure extending along the length direction of the longitudinal beam 10, the arc structure not only extends the weld and improves the firmness, but also prevents the first side mounting plate 421 and the longitudinal beam 10, and the second side mounting plate 621 and the longitudinal beam 10 from forming a right-angle connection structure, that is, preventing stress concentration, further improving the stability of the overall structure, and thereby extending the service life of the wide-body vehicle frame.

[0068] Alternatively, if Figure 1 and Figure 2 As shown, the lifting beam 40 further includes ribs 44, and the ribs 44 are welded to the first side mounting plate 421 and the second round transverse tube 43 respectively.

[0069] Specifically, the ribs 44 are arranged to be inclined, and the inclination angle thereof is substantially the same as the inclination angle during the lifting operation of the lifting cylinder, so as to enhance the support and better the bearing capacity.

[0070] In this embodiment, by welding the rib 44 at the connection between the first side mounting plate 421 and the second circular transverse tube 43, that is, the rib 44 is welded to the first side mounting plate 421 and the second circular transverse tube 43, the connection stability of the first side mounting plate 421 and the second circular transverse tube 43 is improved, that is, the stability of the wide-body vehicle lifting system during operation is improved, and the bearing capacity and stability reliability of the overall structure are further improved.

[0071] In addition, another embodiment of the present invention provides a wide-body vehicle, comprising the wide-body vehicle frame described above.

[0072] Exemplarily, the wide-body vehicle is a heavy-duty off-road wide-body dump truck for mining.

[0073] In this embodiment, the wide-body vehicle provided in this embodiment has substantially the same technical effect as the wide-body vehicle frame described above by providing the wide-body vehicle frame described above, and will not be described in detail herein.

[0074] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A wide-body vehicle frame, characterized in that: The invention comprises a longitudinal beam (10), and a lower ring beam (30), a lifting beam (40), an intermediate beam (50), a longitudinal tie rod beam (60), and a tail beam (70) which are sequentially arranged at intervals along the longitudinal beam (10), and also comprises a front suspension mounting seat (81), a middle suspension mounting seat (82), and a rear suspension mounting seat (83), wherein: The lower ring beam (30) is a U-shaped box structure as a whole, the two upper ends of the lower ring beam (30) are respectively connected to the two longitudinal beams (10), and the two front suspension mounting seats (81) are respectively connected to the outer sides of the two upper ends of the lower ring beam (30); The lifting crossbeam (40) comprises a first round cross tube (41), a first door-shaped box (42) and a second round cross tube (43) which are connected in sequence, the two ends of the first round cross tube (41) respectively penetrate and are connected to the two longitudinal beams (10), and the two ends of the second round cross tube (43) are respectively used for articulating two lifting cylinders of the cargo box of the wide-body vehicle; The middle cross beam (50) is connected between the two longitudinal beams (10), and the two middle suspension mounting seats (82) are respectively connected to the outer sides of the two longitudinal beams (10) and are located at two ends of the middle cross beam (50); The longitudinal tie rod cross beam (60) comprises a third circular cross tube (61) and a second door-shaped box body (62) connected to each other, the two ends of the third circular cross tube (61) respectively penetrate and are connected to the two longitudinal beams (10), and the lower end of the second door-shaped box body (62) is used to connect the longitudinal tie rod of the wide-body vehicle; The tail cross beam (70) is connected between the two longitudinal beams (10) and is located at the tail of the longitudinal beams (10); the two rear suspension mounting seats (83) are respectively connected to the outer sides of the two longitudinal beams (10) and are located at the two ends of the tail cross beam (70); the tails of the two longitudinal beams (10) are used to hinge the cargo box.

2. The wide-body vehicle frame according to claim 1, characterized in that: The longitudinal beam (10) is a box beam structure formed by welding a top plate (11), two side plates (12) and a bottom plate (13); the side plates (12) are provided with mounting holes (121) adapted to the first circular transverse tube (41) and the third circular transverse tube (61); the first circular transverse tube (41) and the third circular transverse tube (61) are welded to the mounting holes (121); and a lining plate (122) is welded to the side plates (12) on the inner side of the longitudinal beam (10) at the position of the mounting holes (121).

3. The wide-body vehicle frame according to claim 2, characterized in that: The wide-body vehicle frame further comprises a diagonal tie rod mounting seat (84); the bottom plate (13) has a protruding structure (131) protruding toward the side; the diagonal tie rod mounting seat (84) is welded to the bottom plate (13) and is located at the bottom of the protruding structure (131).

4. The wide-body vehicle frame according to claim 3, characterized in that: A reinforcing plate is welded inside the longitudinal beam (10), and the reinforcing plate is located at at least one corresponding position among the front suspension mounting seat (81), the middle suspension mounting seat (82), the rear suspension mounting seat (83) and the diagonal rod mounting seat (84).

5. The wide-body vehicle frame according to claim 1, characterized in that: The wide-body vehicle frame further comprises a front cross beam (20), wherein the front cross beam (20) is welded to the front end bottom of the longitudinal beam (10), and an inclined plate (21) is extended toward the rear at the connection between the front cross beam (20) and the longitudinal beam (10).

6. The wide-body vehicle frame according to claim 1, characterized in that: The wide-body vehicle frame further comprises a mounting platform (90), two mounting platforms (90) being respectively welded to the two upper ends of the lower ring beam (30), and the mounting platform (90) being welded to the top of the longitudinal beam (10), and the front suspension mounting seat (81) being welded to the connection between the lower ring beam (30) and the mounting platform (90).

7. The wide-body vehicle frame according to claim 1, characterized in that: The tail cross beam (70) comprises a box-type cross beam (71) and an arc-shaped plate (72), the two ends of the box-type cross beam (71) are respectively welded to the inner sides of the two longitudinal beams (10), the arc-shaped plate (72) is located at the connection between the box-type cross beam (71) and the longitudinal beam (10), the arc-shaped plate (72) is respectively welded to the inner sides of the box-type cross beam (71) and the longitudinal beam (10), and the weld between the arc-shaped plate (72) and the longitudinal beam (10) is in a wavy line structure.

8. The wide-body vehicle frame according to claim 1, characterized in that: The first door-shaped box body (42) and the second door-shaped box body (62) are both closed box-type structures formed by welding of plates. The first door-shaped box body (42) includes a first side mounting plate (421), and the two first side mounting plates (421) are symmetrically welded to the bottoms of the two longitudinal beams (10). The second door-shaped box body (62) includes a second side mounting plate (621), and the two second side mounting plates (621) are symmetrically welded to the bottoms of the two longitudinal beams (10). The connecting ends of the first side mounting plate (421) and the longitudinal beam (10) and the connecting ends of the second side mounting plate (621) and the longitudinal beam (10) are both provided with arc structures extending along the length direction of the longitudinal beam (10).

9. The wide-body vehicle frame according to claim 8, characterized in that: The lifting cross beam (40) further comprises a rib plate (44), and the rib plate (44) is welded to the first side mounting plate (421) and the second round cross tube (43) respectively.

10. A wide-body vehicle, characterized in that: It comprises a wide-body vehicle frame as described in any one of claims 1 to 9.

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