An off-road dump truck

Abstract

The present invention provides an off-highway dump truck, comprising: a movable body; a carriage mechanism disposed on top of the body, the carriage mechanism including a bottom plate, the rear half of the bottom plate being a material drop zone; and a frame mechanism disposed between the carriage mechanism and the body, the frame mechanism including two longitudinal beams, a plurality of transverse beams, and a plurality of reinforcing transverse beams. The two longitudinal beams are fixedly disposed at intervals in parallel on the bottom of the bottom plate, a plurality of transverse beams are attached to the bottom of the bottom plate at intervals in parallel and vertically penetrate the upper portions of the two longitudinal beams, a plurality of transverse beams are fixedly disposed on the bottom plate, the plurality of transverse beams include a plurality of rear transverse beams corresponding to the material drop zone, and a plurality of reinforcing transverse beams are respectively disposed within the plurality of rear transverse beams. This improves the support strength of the frame mechanism for the material drop zone in the rear half of the bottom plate, reduces maintenance costs of the carriage mechanism, and extends the overall service life of the carriage mechanism.

Description

Technical Field

[0001] The present invention relates to the field of off-road dump trucks, in particular to an off-road dump truck. Background Art

[0002] An off-road dump truck is a heavy-duty dump truck used in open-pit mines to complete rock and earth stripping and ore transportation tasks. Its working characteristics are short travel distance and heavy load. It is usually loaded with a large electric shovel or hydraulic shovel and travels back and forth between the mining site and the unloading site.

[0003] At present, in order to prevent stones from falling from the rear of the car body during loading, existing dump trucks will raise the rear of the car body and tilt the car body. At the same time, the dropping point of large excavators is usually selected at the rear of the car body so that the stones will automatically roll down to the front side of the car body floor after falling and accumulate.

[0004] However, reference Figure 1 In order to ensure that the frame structure of the existing dump truck compartment can support the bottom plate smoothly, the compartment frame structure is assembled from a number of crossbeams and longitudinal beams welded to the bottom of the bottom plate. The crossbeams are arranged between the longitudinal beams in sections and welded to the longitudinal beams respectively. When the rear end of the compartment is raised, the existing off-highway dump trucks will have the following defects: mountain road transportation has a large number of climbing sections. When the rear end of the compartment is raised, the materials in the compartment will be squeezed not only toward the rear tailgate of the compartment, but also toward the rear of the compartment floor during the dump truck climbing process. At the same time, the rear of the compartment floor will continue to be impacted by gravity when a large excavator is loading the vehicle. The existing rear of the compartment floor cannot withstand the above pressure and is prone to cracking and deformation of the welds, bending of the rear end beam frame, etc., which increases the maintenance cost of the compartment and reduces the service life of the compartment. Summary of the Invention

[0005] The present invention provides an off-road dump truck, which can effectively solve the above problems.

[0006] The present invention is achieved in that:

[0007] An off-highway dump truck, comprising:

[0008] movable body;

[0009] A carriage mechanism is provided on the top of the vehicle body, the carriage mechanism comprising a bottom plate, a front plate and a rear plate provided on the front and rear sides of the bottom plate, and side rails provided on the left and right sides of the bottom plate, wherein the rear half of the bottom plate is provided as a blanking area;

[0010] A frame mechanism is provided between the carriage mechanism and the vehicle body, and the frame mechanism includes two longitudinal beams, a plurality of cross beams and a plurality of reinforcing cross beams. The two longitudinal beams are fixedly arranged at parallel intervals on the bottom of the base plate, and a plurality of cross beams are attached to the bottom of the base plate at parallel intervals and vertically pass through the upper parts of the two longitudinal beams. A first beam groove is provided on the side of a plurality of cross beams close to the base plate, and the notch of the first beam groove is fixed to the base plate. A plurality of cross beams include a plurality of rear cross beams corresponding to the blanking area, and a plurality of reinforcing cross beams are respectively arranged in the first beam grooves of a plurality of rear cross beams. The tops of a plurality of reinforcing cross beams are fixed to the bottom of the base plate, and the bottoms of a plurality of reinforcing cross beams are abutted against the inner bottom of the rear cross beam.

[0011] As a further improvement, a second beam groove is provided on the side of the reinforcing beam close to the bottom plate, and the notch of the second beam groove is fixed to the bottom plate, and two buffer spaces are formed between the outer side wall of the reinforcing beam and the corresponding inner side wall of the rear beam.

[0012] As a further improvement, the cross-section of the second beam groove is set to a trapezoidal structure with a larger upper portion and a smaller lower portion, and the cross-section of the first beam groove is set to a square structure, so that two buffer spaces with a right-angled triangle cross-section are formed between the outer side wall of the reinforcing beam and the corresponding inner side wall of the rear beam.

[0013] As a further improvement, the length of several of the reinforcing beams is not shorter than the distance between the sides of the two longitudinal beams away from each other, and the two ends of several of the reinforcing beams are respectively arranged between the sides of the two longitudinal beams away from each other and the two ends of several of the rear beams.

[0014] As a further improvement, a plurality of reinforcing longitudinal beams are provided in parallel between the two longitudinal beams, and the reinforcing longitudinal beams are fixed to the bottoms of the plurality of transverse beams in sequence along the front-to-rear direction.

[0015] As a further improvement, the vehicle body includes a special-shaped beam mechanism capable of supporting the frame mechanism and the carriage mechanism, and the special-shaped beam mechanism includes:

[0016] The left and right beams have the same structure and are detachably mounted on the bottom of the two longitudinal beams, the left beam comprising a beam plate, a side sealing plate, a lifting plate and an upper sealing plate, the upper and lower ends of the beam plate are respectively folded toward the right to form an upper folding plate portion and a lower folding plate portion, the lifting plate is detachably mounted on the left side of the rear half of the beam plate, the side sealing plate is arranged on the right side of the beam plate, the upper sealing plate is fixedly mounted between the upper portion of the side sealing plate and the upper portion of the lifting plate, the upper sealing plate is arranged above the upper folding plate portion and the spacing between the upper sealing plate and the upper folding plate portion gradually increases from front to rear, the lower portion of the side sealing plate is fixedly mounted on the lower folding plate portion, the upper sealing plate, the side sealing plate, the lower folding plate portion, the beam plate and the lifting plate are enclosed to form an upper supporting area and a lower supporting area with the upper folding plate portion as a partition;

[0017] A plurality of support mechanisms are arranged between the left beam and the right beam at intervals along the front-to-back direction, and the ends of the plurality of support mechanisms can respectively pass through the side sealing plates and be fixedly inserted into the upper support area and be placed between the side sealing plates and the upper folding plate portion;

[0018] Several bridge mechanisms are arranged between the left beam and the right beam at intervals along the front-to-back direction. The two ends of the several bridge mechanisms can respectively pass through the side sealing plates and be fixedly inserted into the lower support area and be placed between the upper folding plate part and the lower folding plate part.

[0019] As a further improvement, the side sealing plate is provided with several first mounting openings connected to the upper support area, and several second mounting openings connected to the lower support area, the upper ends of the second mounting openings are connected to the first mounting openings, and the two ends of several of the support mechanisms can be fixedly inserted into the upper support area through the first mounting openings opposite to each other on the left beam and the right beam, and the two ends of several of the bridge mechanisms can be fixedly inserted into the lower support area through the second mounting openings opposite to each other on the left beam and the right beam, and the bottom of each of the crossbeam support mechanisms is arranged to fit with the top of each of the bridge mechanisms.

[0020] As a further improvement, the second mounting opening is set to an I-shape and the upper and lower sides correspond to the upper folding plate part and the lower folding plate part respectively. Each of the bridge mechanisms includes a vertical plate and two parallel horizontal plates. The vertical plate is vertically fixed between the middle parts of the two horizontal plates, and the two ends of the two horizontal plates are fixedly inserted into the second mounting opening and abut against the upper folding plate part and the lower folding plate part. The two ends of the vertical plate are inserted into the lower support area through the second mounting opening and are topped between the upper folding plate part and the lower folding plate part.

[0021] As a further improvement, ventilation holes are symmetrically provided at both ends of the vertical plate, and the ventilation holes are arranged between the left beam and the right beam, and the two ends of the two horizontal plates are partially extended in the front and rear directions to form reinforcement parts that abut against the upper folding plate part and the lower folding plate part, and several supporting mechanisms are sequentially provided as a first support member and several second support members from back to front, and the two ends of the first support member respectively pass through the lifting plate to form a mounting part, and hinge seats are respectively installed on the mounting parts, and a reinforcement plate is vertically fixed between the rear sides of the two horizontal plates arranged at the bottom of the first support member, and a connecting hole corresponding to the ventilation hole is provided on the reinforcement plate.

[0022] As a further improvement, a plurality of supporting corrugated plates are vertically fixed between the upper sealing plate and the upper folding plate portion.

[0023] The beneficial effects of the present invention are:

[0024] 1. By vertically penetrating the longitudinal beams and then welding them to the bottom of the floor, the existing segmented crossbeams welded between the longitudinal beams are replaced with whole crossbeams. This allows the crossbeams and the two longitudinal beams to form an integrated frame structure, eliminating the need for welding between the two. This strengthens the overall support strength of the frame structure and prevents the frame structure from falling apart due to cracking in the welds between the crossbeams and the two longitudinal beams when the floor is compressed or impacted by gravity.

[0025] 2. By adding reinforcing crossbeams to several rear crossbeams corresponding to the material drop area, the bending resistance of several rear crossbeams is improved, thereby increasing the support strength of the frame mechanism for the material drop area. When a large excavator drops large rocks from high altitude during loading, the material drop area is impacted by gravity. This can prevent the bending of several rear crossbeams corresponding to the material drop area, causing deformation or even disintegration of the frame mechanism, thereby reducing the maintenance cost of the carriage mechanism.

[0026] 3. By adding reinforcing crossbeams in several rear crossbeams corresponding to the material drop zone, the support strength of the frame mechanism to the rear half of the bottom plate is improved. When the tail of the dump truck's compartment mechanism is raised, the bottom plate of the compartment mechanism can stably share the pressure caused by material extrusion with the rear plate of the compartment mechanism during the dump truck's climbing process, reducing the maintenance cost of the compartment mechanism and extending the overall service life of the compartment mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1This is a bottom-up installation diagram of an existing off-highway dump truck frame mechanism.

[0029] Figure 2 The diagram is a structural diagram of the existing off-highway dump truck special-shaped beam mechanism.

[0030] Figure 3 for Figure 2 rear view.

[0031] Figure 4 This is a left-side structural schematic diagram of an off-highway dump truck provided in Example 1 of the present invention.

[0032] Figure 5 This is a bottom-view structural diagram of the frame mechanism provided in the first embodiment of the present invention.

[0033] Figure 6 for Figure 5 Schematic diagram of the cross-sectional structure at AA in the middle.

[0034] Figure 7 for Figure 6 A local enlarged schematic diagram of point A in the middle.

[0035] Figure 8 This is a schematic diagram of the three-dimensional structure of the carriage mechanism provided in Example 1 of the present invention.

[0036] Figure 9 This is a schematic diagram of the three-dimensional structure of the special-shaped beam mechanism provided in Example 1 of the present invention.

[0037] Figure 10 for Figure 9 A partial enlarged schematic diagram of point B in the middle.

[0038] Figure 11 This is a schematic diagram of the right side structure of the left beam provided in Example 1 of the present invention.

[0039] Figure 12 for Figure 11 Schematic diagram of the cross-sectional three-dimensional structure at the middle BB.

[0040] Figure 13 This is a schematic diagram of the partial explosion structure of the left beam, support mechanism and bridge mechanism provided in Example 1 of the present invention.

[0041] Figure 14 for Figure 13 Schematic diagram of the exploded structure of the middle support mechanism and the bridge mechanism.

[0042] Figure 15 for Figure 9 Schematic diagram of the top view structure.

[0043] Figure 16 for Figure 15Schematic diagram of the cross-section at CC in the middle.

[0044] Figure 17 This is a bottom-view structural diagram of the frame mechanism provided in the second embodiment of the present invention.

[0045] Figure 18 for Figure 17 Schematic diagram of the cross-sectional structure at DD in the middle.

[0046] Figure 19 for Figure 18 A partial enlarged schematic diagram of point C in the middle. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention for which protection is sought, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0048] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0049] Example 1

[0050] Reference Figure 1-16 As shown, an off-highway dump truck comprises:

[0051] A movable vehicle body 1;

[0052] The carriage mechanism 2 is provided on the top of the vehicle body 1, and includes a bottom plate 21, a front plate 22 and a rear plate 23 provided on the front and rear sides of the bottom plate 21, and side fences 24 provided on the left and right sides of the bottom plate 21. The bottom plate 21 is tilted with the front lower and the rear higher, and the inclination angle of the bottom plate 21 is set to 9°-11°. Preferably, in this embodiment, the inclination angle of the bottom plate 21 is set to 10°. The rear half of the bottom plate 21 is set as a material drop area 211. When the large excavator is loading, large stones are repeatedly poured onto the material drop area 211.

[0053] The frame mechanism 3 is provided between the carriage mechanism 2 and the vehicle body 1. The frame mechanism 3 includes two longitudinal beams 31, a plurality of cross beams 32 and a plurality of reinforcing cross beams 33. The two longitudinal beams 31 are fixedly arranged at the bottom of the bottom plate 21 in parallel and spaced apart. The plurality of cross beams 32 are attached to the bottom of the bottom plate 21 in parallel and spaced apart and vertically penetrate the upper portion of the two longitudinal beams 31. The first beam groove 321 is provided on one side of the plurality of cross beams 32 close to the bottom plate 21. The notch of the first beam groove 321 is fixed to the bottom plate 21. The fixing arrangement described in this embodiment is all welded fixing. In other embodiments, the fixed setting can also be other existing fixed connection methods; the plurality of cross beams 32 include a plurality of rear cross beams 322 corresponding to the blanking area 211, and the plurality of reinforcing cross beams 33 are respectively arranged in the first beam grooves 321 of the plurality of rear cross beams 322, and the tops of the plurality of reinforcing cross beams 33 are fixed to the bottom of the bottom plate 21, and the bottoms of the plurality of reinforcing cross beams 33 are abutted against the inner bottoms of the rear cross beams 322, thereby improving the supporting strength and bending resistance of the plurality of rear cross beams 322 through the setting of the reinforcing cross beams 33.

[0054] The above structure can achieve the following effects:

[0055] 1. By vertically penetrating the longitudinal beams and then welding them to the bottom of the base plate, the existing segmented transverse beams welded between the longitudinal beams are replaced with a whole transverse beam 32. The transverse beams 32 and the two longitudinal beams 31 form an integral frame structure 3, eliminating the need for welding between the two. This strengthens the overall support strength of the frame structure 3 and prevents the frame structure 3 from falling apart due to cracking of the welds between the transverse beams 32 and the two longitudinal beams 31 when the base plate 21 is compressed or impacted by gravity.

[0056] 2. By adding reinforcing crossbeams 33 to the plurality of rear crossbeams 322 corresponding to the material drop zone 211, the bending resistance of the plurality of rear crossbeams 322 is improved, thereby increasing the support strength of the frame mechanism 3 on the material drop zone 211. This prevents the plurality of rear crossbeams 322 corresponding to the material drop zone 211 from bending when a large excavator drops large rocks from a high altitude during loading, thereby preventing the material drop zone 211 from being impacted by gravity. This can prevent the frame mechanism 2 from deforming or even falling apart due to bending, thereby reducing the maintenance cost of the carriage mechanism 2.

[0057] 3. By adding reinforcing cross beams 33 in several rear cross beams 322 corresponding to the blanking area 211, the supporting strength of the frame mechanism 3 on the rear half of the bottom plate 21 is improved. When the tail of the dump truck's carriage mechanism 2 is raised, when the dump truck climbs a slope, the bottom plate 21 of the carriage mechanism 2 can stably share the pressure caused by material extrusion with the rear plate of the carriage mechanism 2, thereby reducing the maintenance cost of the carriage mechanism 2 and extending the overall service life of the carriage mechanism 2.

[0058] In order to reduce the weight of the reinforcing beam 33 and improve the stress release of the reinforcing beam 33, a second beam groove 331 is provided on the side of the reinforcing beam 33 close to the bottom plate 21. The notch of the second beam groove 331 is fixed to the bottom plate 21, and two buffer spaces 332 are formed between the outer wall of the reinforcing beam 33 and the corresponding inner wall of the rear beam 322. The stress of the reinforcing beam 33 and the rear beam 322 can be released through the two buffer spaces 332, thereby avoiding the mutual squeezing of the two after slight deformation under pressure, which causes cracking of the weld between the two and the bottom of the bottom plate 21.

[0059] To enhance the stability of the two buffer spaces 332, in this embodiment, the cross-section of the second beam groove 331 is configured as a trapezoidal structure with a larger top and a smaller bottom, while the cross-section of the first beam groove 321 is configured as a square structure. This creates two buffer spaces 332 with right-angled triangular cross-sections between the outer sidewalls of the reinforcing crossbeam 33 and the corresponding inner sidewalls of the rear crossbeam 322. In other embodiments, the cross-sections of the two buffer spaces 332 can also be configured as other stable structures, such as a right-angled trapezoid. The cross-sections of the first beam groove 321 and the second beam groove 331 can be adjusted adaptively based on specific circumstances.

[0060] Specifically, in this embodiment, the outer wall inclination angle A of the reinforcing beam 33 is set to 75°-80°, and the bottom width D of the reinforcing beam 33 is set to at least 30 mm. Specifically, the outer wall inclination angle A of the reinforcing beam 33 is set to 77°, and the bottom width D of the reinforcing beam 33 is set to 58 mm. In other embodiments, the outer wall inclination angle A of the reinforcing beam 33 and the bottom width D of the reinforcing beam 33 can be adaptively adjusted according to specific circumstances.

[0061] In order to improve the reinforcing effect of the plurality of reinforcing crossbeams 33 on the bending resistance of the plurality of rear crossbeams 322, specifically, the plurality of reinforcing crossbeams 33 must meet the following requirements: the length of the plurality of reinforcing crossbeams 33 is not less than the distance between the two longitudinal beams 31 on the side away from each other, and the two ends of the plurality of reinforcing crossbeams 33 are respectively arranged between the side away from each other of the two longitudinal beams 31 and the two ends of the plurality of rear crossbeams 322, so that the two ends of the plurality of reinforcing crossbeams 33 at least cross the connection point between the plurality of rear crossbeams 322 and the two longitudinal beams 31, thereby preventing the rear crossbeams 322 from bending and deforming with the connection point as a fulcrum when the two ends of the rear crossbeams 322 are subjected to uneven force. In this embodiment, the length of the plurality of reinforcing crossbeams 33 is greater than the distance between the two longitudinal beams 31 on the side away from each other. In other embodiments, to save costs, the length of the plurality of reinforcing crossbeams 33 can also be set to be equal to the distance between the two longitudinal beams 31 on the side away from each other.

[0062] In order to make the welding of the plurality of beams 32 more convenient and firm, in this embodiment, both sides of the notches of the plurality of first beam grooves 321 extend in opposite directions to form fixing portions 3221 , and the fixing portions 3221 are fixed to the bottom plate 21 .

[0063] In order to further improve the overall support strength of the frame mechanism 3, a number of reinforcing longitudinal beams 34 are provided in parallel between the two longitudinal beams 31. The reinforcing longitudinal beams 34 are fixed to the bottoms of the several cross beams 32 in sequence along the front-to-back direction, thereby improving the support strength of the several cross beams 32.

[0064] In order to concentrate the support areas of the plurality of rear cross beams 322, the plurality of rear cross beams 322 include, from front to back, a first beam 3221, a second beam 3222, a third beam 3223 and a fourth beam 3224. The first beam 3221 corresponds to the front side of the blanking area 211. Thus, when stones are loaded toward the blanking area 211 and the stones slide toward the front side of the blanking area 211 to the front side of the bottom plate 21, the first beam 3221 improves the support strength of the frame mechanism 3 on the front side of the blanking area 211. The second beam 3222, the third beam 3223 and the fourth beam 3224 are arranged in sequence. 3224 corresponds to the blanking area 211, and the plurality of cross beams 32 include a plurality of front cross beams 323 arranged in front of the plurality of rear cross beams 322, and the plurality of front cross beams 323 and the first beam 3221 are spaced apart at a first spacing, and the second beam 3222, the third beam 3223 and the fourth beam 3224 are equidistantly spaced apart at a second spacing smaller than the first spacing, thereby improving the support concentration of the second beam 3222, the third beam 3223 and the fourth beam 3224, and improving the compressive resistance of the area corresponding to the frame mechanism 3 and the blanking area 211.

[0065] Specifically, a plurality of connection openings adapted to the plurality of cross beams 32 are respectively opened on one side of the two longitudinal beams 31 close to the bottom plate 21 , and the plurality of cross beams 32 vertically penetrate the upper portion of the two longitudinal beams 31 through the plurality of connection openings.

[0066] In order to raise the rear end of the car body 2, in this embodiment, the load-bearing beam mechanism at the bottom of the car body 2 is set as a special-shaped beam mechanism, and the tail of the special-shaped beam mechanism is convex to form a slope that can lift the rear end of the car body to raise the rear side of the car body.

[0067] However, reference Figure 2-3 The existing special-shaped beam structure is formed by only four plates being assembled and welded together, resulting in the following defects in the existing special-shaped beam: First, all four sides of the beam are welded together, and the welding amount is large. Under the long-term action of heavy loads, the welds between the plates will crack, increasing the maintenance cost of the special-shaped beam and reducing the service life of the special-shaped beam; Second, when the rear end of the car body is raised, the material in the car body will be squeezed not only toward the rear tailgate of the car body, but also toward the rear of the car body floor during the climbing process. The existing special-shaped beam is hollow in the middle, and the rear end of the special-shaped beam is subjected to a large load, causing the plates on its four sides to bend and be damaged easily. The above defects greatly reduce the service life of the special-shaped beam, increase the maintenance cost of off-road dump trucks, and thus reduce the service life of off-road dump trucks.

[0068] In order to achieve the goal of raising the rear of the carriage mechanism 2 while strengthening the supporting strength of the special-shaped beam mechanism, specifically, the vehicle body 1 includes a special-shaped beam mechanism that can support the frame mechanism 3 and the carriage mechanism 2, and the special-shaped beam mechanism includes:

[0069] The left beam 4 and the right beam 5 have the same structure and are detachably installed on the bottom of the two longitudinal beams 31. The left beam 4 includes a beam plate 41, a side sealing plate 42, a lifting plate 43 and an upper sealing plate 44. The upper and lower ends of the beam plate 41 are folded to the right to form an upper folding plate portion 411 and a lower folding plate portion 412. The lifting plate 43 is detachably fitted on the left side of the rear half of the beam plate 41. Specifically, in this embodiment, the lifting plate 43 and the beam plate 41 are detachably connected by riveting. In other embodiments, the two can also be detachably connected by other existing connection methods. The side sealing plate 42 is provided on the right side of the beam plate 41, and the upper sealing plate 44 is fixed to the side sealing plate Between the upper part of the plate 42 and the upper part of the lifting plate 43, the upper sealing plate 44 is arranged above the upper folding plate portion 411 and the distance between the upper sealing plate 44 and the upper folding plate portion 411 gradually increases from front to rear, and the upper sealing plate 44 forms a slope that can support the rear side of the carriage mechanism 2. The upper sealing plate 44 is arranged above the upper folding plate portion 411 and the distance between the upper sealing plate 44 and the upper folding plate portion 411 gradually increases from front to rear. The lower part of the side sealing plate 42 is fixed to the lower folding plate portion 412. The upper sealing plate 44, the side sealing plate 42, the lower folding plate portion 412, the beam plate 41 and the lifting plate 43 enclose an upper support area 45 and a lower support area 46 with the upper folding plate portion 411 as a partition.

[0070] A plurality of support mechanisms 6 are spaced apart and arranged between the left beam 4 and the right beam 5 in the front-to-rear direction. The ends of the plurality of support mechanisms 6 can respectively pass through the side sealing plates 42 and be fixedly inserted into the upper support area 45 and be placed between the side sealing plates 42 and the upper folding plate portion 411. In this embodiment, the plurality of support mechanisms 6 are configured as square tubes. In other embodiments, the plurality of support mechanisms 6 can also be configured as other shapes.

[0071] Several bridge mechanisms 7 are arranged between the left beam 4 and the right beam 5 at intervals along the front-to-back direction. The two ends of the several bridge mechanisms 7 can respectively pass through the side sealing plate 42 and be fixedly inserted into the lower support area 46 and be placed between the upper folding plate part 411 and the lower folding plate part 412.

[0072] The above structure is set up, by using the high-strength beam plate 41 with the upper folding plate part 411 and the lower folding plate part 412 as the main structure, the lifting plate 43 and the beam plate 41 are detachably set, thereby replacing the existing four-side welded connection of the beam with a three-side welded connection, which is not easy to cause welding deformation. The beam plate 41 provided in the left beam 4 and the right beam 5 not only improves the overall supporting strength of the left beam 4 and the right beam 5, but also reduces the welding amount, thereby reducing the probability of weld cracking and improving the service life of the special-shaped beam mechanism; the beam plate 41 is combined with the side sealing plate 42, the lifting plate 43 and The upper sealing plate 44 encloses and forms an upper supporting area 45 and a lower supporting area 46 with the upper folding plate portion 411 as a partition, and is then fixedly inserted into the upper supporting area 45 and the lower supporting area 46 through a plurality of supporting mechanisms 6 and a bridge mechanism 7 to connect the left beam 4 and the right beam 5, and respectively support the side sealing plate 42 and the upper folding plate portion 411, making full use of the hollow center of the left beam 4 and the right beam 5 for high-strength support, thereby improving the overall supporting strength of the area on the rear side of the left beam 4 and the right beam 5 corresponding to the blanking area 211, and further improving the service life of the special-shaped beam mechanism;

[0073] At the same time, through the arrangement of the above-mentioned structure, the rear part of the special-shaped beam mechanism can fully support the rear part of the frame mechanism 3, so that the special-shaped beam mechanism and the frame mechanism 3 can jointly fully support the blanking area 211 at the rear of the bottom plate 21. Therefore, even after the tail of the car body mechanism 2 is raised, the dump truck will be in the process of climbing. The material in the car body mechanism 2 will not only be squeezed toward the rear plate 23 of the car body mechanism 2, but also squeezed toward the rear direction of the bottom plate 21 of the car body mechanism 2. The bottom plate 21 of the car body mechanism 2 can also stably share the pressure caused by the material squeezing for the rear plate 23 of the car body mechanism 2, and the frame mechanism 3 and the special-shaped beam mechanism at the bottom of the blanking area 211 will not bend, deform or fall apart, thereby reducing the overall maintenance cost of the dump truck and extending the overall service life of the dump truck.

[0074] In order to improve the overall support strength of the special-shaped beam structure, the bottom of each support mechanism 6 is fitted on the top of each bridge mechanism 7. Therefore, when the left beam 4 and the right beam 5 are loaded, the support mechanism 6 can transmit the pressure downward to the bridge mechanism 7. The superimposed support of the support mechanism 6 and the bridge mechanism 7 can improve the support strength of the upper cover plate 44, thereby improving the support strength of the rear side of the special-shaped beam structure.

[0075] Specifically, in this embodiment, the side sealing plate 42 is provided with a plurality of first mounting openings 421 connected to the upper support area 45, and a plurality of second mounting openings 422 connected to the lower support area 46. The upper ends of the second mounting openings 422 are connected to the first mounting openings 421. The two ends of the plurality of support mechanisms 6 can be fixedly inserted into the upper support area 45 through the first mounting openings 421 opposite to each other on the left beam 4 and the right beam 5, respectively. The two ends of the plurality of bridge mechanisms 7 can be fixedly inserted into the lower support area 46 through the second mounting openings 422 opposite to each other on the left beam 4 and the right beam 5, respectively, and the bottom of each cross beam 32 support mechanism 6 is arranged to fit the top of each bridge mechanism 7.

[0076] In order to further improve the supporting strength of the bridge mechanism 7, it is set as a stable I-shaped support structure, and at the same time the supporting area can be increased. The second mounting opening 422 is set as an I-shape and the upper and lower sides correspond to the upper folding plate part 411 and the lower folding plate part 412 respectively. Each of the bridge mechanisms 7 includes a vertical plate 71 and two parallel horizontal plates 72. The vertical plate 71 is vertically fixed between the middle parts of the two horizontal plates 72, and the two ends of the two horizontal plates 72 are fixedly inserted into the second mounting opening 422 and abut against the upper folding plate part 411 and the lower folding plate part 412. The two ends of the vertical plate 71 are inserted into the lower support area 46 through the second mounting opening 422 and are topped between the upper folding plate part 411 and the lower folding plate part 412, so that the supporting strength of the beam plate 41 is improved by the vertical plate 71, and the bending of the upper folding plate part 411 and the lower folding plate part 412 can be avoided. In other embodiments, the bridge mechanism 7 can also be set as other types of stable support structures, such as square.

[0077] In order to ensure good ventilation between the left beam 4 and the right beam 5, and to prevent the heat generated by the engine, etc. from accumulating in the special-shaped beam mechanism, causing it to expand due to heat and cracking at the welds, ventilation holes 711 are symmetrically opened at both ends of the vertical plate 71, and the ventilation holes 711 are arranged between the left beam 4 and the right beam 5.

[0078] To enhance the axial bending strength of the transverse plates 72, both ends of the transverse plates 72 partially extend in the front-to-back direction to form reinforcing portions 721 that abut against the upper folded plate portion 411 and the lower folded plate portion 412. In this embodiment, the reinforcing portions 721 are configured in a right-angled trapezoidal shape. In other embodiments, the reinforcing portions 721 may also be configured in other types of supporting structures, such as a right-angled triangle.

[0079] In order to improve the supporting strength of the rear side of the special-shaped beam mechanism to the rear side of the carriage mechanism 2 when the carriage mechanism 2 of the dump truck is rotated and lifted for unloading, a plurality of the support mechanisms 6 are sequentially provided from the back to the front as a first support member 61 and a plurality of second support members 62. The two ends of the first support member 61 respectively pass through the lifting plate 43 to form a mounting portion 611. The mounting portion 611 is respectively provided with an articulated seat 612. The articulated seat 612 can be hinged to the rear side of the carriage mechanism 2 to form a hinge point. Specifically, a push rod or the like can be provided on the front side of the carriage mechanism 2 to drive the push rod. The mechanism can push the carriage mechanism 2 to rotate and lift around the hinge point. The driving mechanism is not specifically limited here. A reinforcing plate 73 is vertically fixed between the rear sides of the two transverse plates 72 provided at the bottom of the first support member 61, thereby improving the supporting strength of the two transverse plates 72 provided at the bottom of the first support member 61, and then improving the supporting strength of the first support member 61 that is fitted with the transverse plates 72. A connecting hole 731 corresponding to the ventilation hole 711 is provided on the reinforcing plate 73, thereby ensuring ventilation between the left beam 4 and the right beam 5.

[0080] In order to enhance the supporting strength of the upper sealing plate 44 , a plurality of supporting ribs 451 are vertically fixed between the upper sealing plate 44 and the upper folding plate portion 411 .

[0081] Example 2

[0082] refer to Figure 17-19The difference between this embodiment and the first embodiment is that, in order to further improve the supporting strength and bending resistance of the several reinforcing beams 33 and the several rear beams 322, two sealing plates 35 are fixedly provided in the rear beam 322. The two sealing plates 35 are arranged at both ends of the reinforcing beam 33 and seal the two buffer spaces 332. The two buffer spaces 332 are respectively filled with a plurality of damping particles 3321. In this embodiment, the damping particles 3321 are set to be spherical ceramic-based damping particles. The friction energy dissipation between the spherical ceramic-based damping particles can form a significant and effective vibration isolation and vibration reduction effect. When the plurality of rear cross beams 322 and the reinforcing cross beams 33 are subjected to pressure or gravity impact, a certain amount of relative movement will be generated between the two, thereby squeezing the plurality of damping particles 3321 in the two buffer spaces 332, and the plurality of damping particles 3321 then frictionally consume energy to reduce the pressure or gravity impact on the plurality of rear cross beams 322 and the reinforcing cross beams 33, thereby achieving effective shock absorption, thereby avoiding relative movement deformation between the reinforcing cross beam 33 and the rear cross beam 322, resulting in cracking or bending of the weld, etc., and effectively improving the The supporting strength and bending resistance of several of the reinforcing beams 33 and several of the rear beams 322 are improved; at the same time, the bottoms of several of the reinforcing beams 33 are arranged in contact with the inner bottoms of the rear beams 322, which increases the contact area between the two and can reduce the relative movement between the two after being compressed, thereby avoiding a large deformation difference between the two, excessive squeezing of the two buffer spaces 332, resulting in the squeezing out of several of the damping particles 3321, causing them to lose their friction shock absorption effect, and improving the stability of the shock absorption effect of the two buffer spaces 332.

[0083] It should be noted that the implementation principle and technical effects of this embodiment are the same as those of the first embodiment. For the sake of brief description, for matters not mentioned in this embodiment, reference may be made to the corresponding contents in the first embodiment.

[0084] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. An off-road dump truck, characterized in that: include: movable vehicle body (1); A carriage mechanism (2) is provided on the top of the vehicle body (1), the carriage mechanism (2) comprising a bottom plate (21), a front plate (22) and a rear plate (23) provided on the front and rear sides of the bottom plate (21), and side rails (24) provided on the left and right sides of the bottom plate (21), the rear half of the bottom plate (21) being provided as a blanking area (211); A frame mechanism (3) is provided between the carriage mechanism (2) and the vehicle body (1), the frame mechanism (3) comprising two longitudinal beams (31), a plurality of transverse beams (32) and a plurality of reinforcing transverse beams (33), the two longitudinal beams (31) being fixedly provided at intervals in parallel on the bottom of the bottom plate (21), the plurality of transverse beams (32) being attached at intervals in parallel on the bottom of the bottom plate (21) and vertically passing through the upper portions of the two longitudinal beams (31), the plurality of transverse beams (32) being provided with a first beam groove (33) on one side close to the bottom plate (21) 21), the notch of the first beam groove (321) is fixedly arranged with the bottom plate (21), the plurality of cross beams (32) include a plurality of rear cross beams (322) corresponding to the blanking area (211), the plurality of reinforcing cross beams (33) are respectively arranged in the first beam grooves (321) of the plurality of rear cross beams (322), the tops of the plurality of reinforcing cross beams (33) are fixedly arranged with the bottom of the bottom plate (21), and the bottoms of the plurality of reinforcing cross beams (33) are in contact with the inner bottom of the rear cross beam (322); A second beam groove (331) is provided on one side of the reinforcing beam (33) close to the bottom plate (21); a notch of the second beam groove (331) is fixedly arranged on the bottom plate (21); and two buffer spaces (332) are formed between the outer side wall of the reinforcing beam (33) and the corresponding inner side wall of the rear beam (322); The cross section of the second beam groove (331) is set to a trapezoidal structure with a larger upper portion and a smaller lower portion, and the cross section of the first beam groove (321) is set to a square structure, so that two buffer spaces (332) with a right-angled triangular cross section are formed between the outer side wall of the reinforcing cross beam (33) and the corresponding inner side wall of the rear cross beam (322).

2. An off-highway dump truck according to claim 1, characterized in that: The lengths of the plurality of reinforcing cross beams (33) are not shorter than the spacing between the two longitudinal beams (31) on the sides away from each other, and the two ends of the plurality of reinforcing cross beams (33) are respectively arranged between the two longitudinal beams (31) on the sides away from each other and the two ends of the plurality of rear cross beams (322).

3. The off-highway dump truck according to claim 1, characterized in that: A plurality of reinforcing longitudinal beams (34) are arranged in parallel between the two longitudinal beams (31), and the reinforcing longitudinal beams (34) are fixedly arranged on the bottoms of the plurality of transverse beams (32) in sequence along the front-rear direction.

4. The off-highway dump truck according to claim 1, characterized in that: The vehicle body (1) includes a special-shaped beam mechanism capable of supporting the frame mechanism (3) and the carriage mechanism (2), and the special-shaped beam mechanism includes: The left beam (4) and the right beam (5) are of the same structure and are detachably and symmetrically installed at the bottom of the two longitudinal beams (31). The left beam (4) includes a beam plate (41), a side sealing plate (42), a lifting plate (43) and an upper sealing plate (44). The upper and lower ends of the beam plate (41) are folded to the right to form an upper folding plate portion (411) and a lower folding plate portion (412). The lifting plate (43) is detachably attached to the left side of the rear half of the beam plate (41). The side sealing plate (42) is arranged on the right side of the beam plate (41). The upper sealing plate (44) is fixed to the left side. Between the upper portion of the side sealing plate (42) and the upper portion of the raising plate (43), the upper sealing plate (44) is arranged above the upper folding plate portion (411) and the distance between the upper sealing plate (44) and the upper folding plate portion (411) gradually increases from front to back, the lower portion of the side sealing plate (42) is fixedly arranged with the lower folding plate portion (412), and the upper sealing plate (44), the side sealing plate (42), the lower folding plate portion (412), the beam plate (41) and the raising plate (43) enclose an upper support area (45) and a lower support area (46) with the upper folding plate portion (411) as a partition; A plurality of support mechanisms (6) are arranged between the left beam (4) and the right beam (5) at intervals along the front-back direction, and the two ends of the plurality of support mechanisms (6) can respectively pass through the side sealing plate (42) and be fixedly inserted into the upper support area (45) and be placed between the side sealing plate (42) and the upper folding plate portion (411); A plurality of bridge mechanisms (7) are arranged between the left beam (4) and the right beam (5) at intervals along the front-to-back direction. The two ends of the plurality of bridge mechanisms (7) can respectively pass through the side sealing plate (42) and be fixedly inserted into the lower support area (46) and be placed between the upper folding plate portion (411) and the lower folding plate portion (412).

5. An off-highway dump truck according to claim 4, characterized in that: The side sealing plate (42) is provided with a plurality of first mounting openings (421) connected to the upper support area (45) and a plurality of second mounting openings (422) connected to the lower support area (46), the upper ends of the second mounting openings (422) are connected to the first mounting openings (421), the two ends of the plurality of support mechanisms (6) can be fixedly inserted into the upper support area (45) through the first mounting openings (421) on the left beam (4) and the right beam (5), respectively, and the two ends of the plurality of bridge mechanisms (7) can be fixedly inserted into the lower support area (46) through the second mounting openings (422) on the left beam (4) and the right beam (5), respectively, and the bottom of each crossbeam (32) support mechanism (6) is arranged to fit the top of each bridge mechanism (7).

6. An off-highway dump truck according to claim 5, characterized in that: The second mounting opening (422) is set to be an I-shape and the upper and lower sides respectively correspond to the upper folding plate portion (411) and the lower folding plate portion (412). Each of the bridge mechanisms (7) includes a vertical plate (71) and two horizontal plates (72) arranged in parallel. The vertical plate (71) is vertically fixed between the middle parts of the two horizontal plates (72). The two ends of the two horizontal plates (72) are fixedly inserted into the second mounting opening (422) and abut against the upper folding plate portion (411) and the lower folding plate portion (412). The two ends of the vertical plate (71) are inserted into the lower support area (46) through the second mounting opening (422) and are placed between the upper folding plate portion (411) and the lower folding plate portion (412).

7. An off-highway dump truck according to claim 6, characterized in that: Ventilation holes (711) are symmetrically provided at both ends of the vertical plate (71), and the ventilation holes (711) are provided between the left beam (4) and the right beam (5). The two ends of the two horizontal plates (72) are partially extended in the front-back direction to form reinforcement parts (721) that abut against the upper folding plate part (411) and the lower folding plate part (412). The plurality of support mechanisms (6) are sequentially provided as a first support member (61) and a plurality of second support members (62) from back to front. The two ends of the first support member (61) respectively pass through the lifting plate (43) to form a mounting part (611). The mounting part (611) is respectively provided with a hinge seat (612). A reinforcement plate (73) is vertically fixed between the rear sides of the two horizontal plates (72) provided at the bottom of the first support member (61). The reinforcement plate (73) is provided with a connecting hole (731) corresponding to the ventilation hole (711).

8. The off-highway dump truck according to claim 4, characterized in that: A plurality of supporting corrugated plates (451) are vertically fixed between the upper sealing plate (44) and the upper folding plate portion (411).

Images