CN114684269A - Frame assembly of heavy desert transport vehicle - Google Patents
Frame assembly of heavy desert transport vehicle Download PDFInfo
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- CN114684269A CN114684269A CN202210572678.1A CN202210572678A CN114684269A CN 114684269 A CN114684269 A CN 114684269A CN 202210572678 A CN202210572678 A CN 202210572678A CN 114684269 A CN114684269 A CN 114684269A
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- 238000005452 bending Methods 0.000 claims description 24
- 230000003014 reinforcing effect Effects 0.000 claims description 24
- 229910000831 Steel Inorganic materials 0.000 claims description 18
- 239000010959 steel Substances 0.000 claims description 18
- 239000000725 suspension Substances 0.000 claims description 6
- 238000010008 shearing Methods 0.000 abstract description 6
- 241001391944 Commicarpus scandens Species 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 46
- 238000003466 welding Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 8
- 239000002356 single layer Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000003137 locomotive effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/02—Understructures, i.e. chassis frame on which a vehicle body may be mounted comprising longitudinally or transversely arranged frame members
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Abstract
The invention discloses a frame assembly of a heavy desert transport vehicle, which is used for non-standard weight transport, the full load can reach 105 tons, the vehicle length is nearly 15 meters, the frame assembly is characterized by consisting of an upper layer of frame and a lower layer of frame, the broken section of each layer of frame is small, the frame is not easy to break, a plurality of cross beams are lapped and supported between two longitudinal beams, the two layers of frames are connected by a connecting seat structure, the connecting seat structure is externally connected by a sleeve, a screw rod is internally connected, only vertical force is applied, and the transverse direction is not influenced by shearing force, so that the whole frame is elastically connected, and the service life of the frame is prolonged.
Description
Technical Field
The invention relates to a transport vehicle, in particular to a non-standard desert transport vehicle, and particularly relates to a frame structure of the transport vehicle.
Background
The desert transport vehicle belongs to special vehicles, and under the special transport environments such as deserts and Gobi, the design of the vehicles is more severe, and the safety and the reliability of the vehicles are particularly important. In addition, since the pits are uneven, hard and remote in the desert, heavy equipment, large materials and the like need to be transported by using an overweight transport vehicle, the transportation of large tonnage is an ideal way of saving the consumption of personnel, financial resources and material resources, and the common vehicle design cannot meet the requirements. The existing desert nonstandard vehicle is still a lot of defects in the technology, the design comprising a frame cannot meet the requirement of large-tonnage heavy transportation, the existing frame is only one layer and has a large section, the strength and the rigidity are poor, the bearing capacity is small, the vehicle is driven on a bumpy distorted road and is acted by a distortion force, the frame at the front end of a container is easy to break, and in addition, the design on the material selection, the shape, the structure, the connection mode and the size of the frame is also unreasonable.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a frame assembly of a heavy desert transport vehicle, which adopts a double-layer small-section frame structure, each layer of frame adopts a special structural design, and the two layers of frames are connected into a whole by adopting a connecting flat plate and a special rigid-flexible combined connecting structure, so that the overall strength and rigidity of the frames are increased, and the bearing capacity is enhanced.
The technical scheme adopted by the invention is as follows: a frame assembly of a heavy desert transport vehicle comprises an upper frame and a lower frame which are stacked up and down, wherein the upper frame and the lower frame are aligned at the tail part of the vehicle, and the upper frame is shorter than the lower frame at the front end of the vehicle;
the upper-layer frame consists of two longitudinal beams and 10 cross beams, the two longitudinal beams are symmetrically arranged in a [ ]shape, the 10 cross beams are arranged between the two longitudinal beams at intervals, two ends of each cross beam are provided with connecting plates, and the connecting plates are connected to the longitudinal beams through bolts; from front to back, the 1 st and 2 nd cross beams are of bent pipe beam structures, the 3 rd, 5 th and 8 th cross beams are of straight pipe beam structures, the 4 th, 6 th, 7 th and 9 th cross beams are of flat plate beam structures in one form, and the 10 th cross beam is of a flat plate beam structure in another form;
the lower-layer frame consists of two longitudinal beams and 11 cross beams, the two longitudinal beams are symmetrically arranged in a [ "and" ] "shape, the 11 cross beams are arranged between the two longitudinal beams at intervals, two ends of each cross beam are provided with connecting plates, and the connecting plates are connected to the longitudinal beams through bolts; the 1 st cross beam and the 11 th cross beam are universal from front to back, are respectively positioned at the foremost end and the rearmost end of the longitudinal beam and are of a five-surface surrounding all-welded box type structure, and the openings of the five-surface surrounding all-welded box type structure face inwards; the No. 2, 3, 4, 5 and 6 cross beams are of bent tube beam structures; the 7 th, 8 th and 10 th cross beams are all in a straight tube beam structure; a 9 th cross beam flat beam structure; the 9 th cross beam comprises two cross beam bodies and four connecting plates, the two cross beam bodies are arranged in a '[' shape back to back mode and are separated, the upper wing surfaces of the two cross beam bodies at the same end are connected with one connecting plate together, the lower wing surfaces at the same end are also connected with one connecting plate together, the connecting plates are in an 'L' shape, one end of each connecting plate is connected with the wing surface of each cross beam body, and the other end of each connecting plate is connected with the longitudinal beam web plate;
the upper frame and the lower frame are connected through a connecting seat structure on the side face, the connecting seat structure comprises an upper connecting seat and a lower connecting seat, the upper connecting seat comprises an auxiliary plate, the auxiliary plate is fixed on the upper frame through a bolt, a connecting block is welded on the auxiliary plate, a bolt through hole is formed in the connecting block, a sleeve is welded at the bottom of the connecting block, and the sleeve is concentric with and communicated with the bolt through hole;
the lower connecting seat comprises an attached plate, the attached plate is fixed on the lower-layer frame through a bolt, a connecting block is welded on the attached plate, a sleeve hole is formed in the connecting block, the sleeve is inserted into the sleeve hole when the upper connecting seat and the lower connecting seat are connected, and a screw rod penetrates through the bolt through hole and the sleeve.
Preferably: all the longitudinal beams and the cross beams of the flat plate beam structure are made of 710L girder steel.
Preferably: the front ends of the two longitudinal beams of the upper frame are reduced to bevel edges.
Preferably: and a lining beam is arranged in the lower-layer frame.
Preferably: the 4 th, 6 th, 7 th and 9 th cross beams of the upper frame comprise cross beam bodies, reinforcing ribs and connecting plates, wherein the reinforcing ribs are arranged on the inner side surfaces of two ends of each cross beam body, and the ends of the cross beam bodies are connected with the connecting plates;
the crossbeam body is transversely in a [ -shape and comprises an upper web plate, a lower web plate and a side vertical plate, and through holes are formed in the side vertical plate;
the connecting plate is in a [ "shape and comprises an upper wing surface, a lower wing surface and a longitudinal wing surface, the upper wing surface and the lower wing surface are respectively connected with the upper web plate bolt and the lower web plate bolt of the cross beam body, and the longitudinal wing surface is connected with the longitudinal beam;
the 10 th cross beam of the upper layer frame comprises a cross beam body and a connecting plate, and the cross beam body is wider than the 4 th, 6 th, 7 th and 9 th cross beam bodies;
the crossbeam body is transversely in a [ -shape and comprises an upper web plate, a lower web plate and a side vertical plate, and through holes are formed in the side vertical plate; two ends of the upper and lower web plates are respectively connected with a connecting plate;
the connecting plate is L-shaped; two connecting plates at the same end are oppositely arranged up and down, one is bent downwards, and the other is bent upwards.
Preferably: the diameters, the wall thicknesses and the bending shapes of the No. 1 crossbeam and the No. 2 crossbeam of the upper layer frame and the bent pipe beam body are the same as those of the No. 3 crossbeam of the lower layer frame.
Preferably: the 2 nd cross beam of the lower frame has a central bending radius R600 and a bending radian of 110 degrees; the 3 rd cross beam has a central bending radius R1000 of 150 degrees, and the 4 th, 5 th and 6 th cross beams have a central bending radius R1000 of 150 degrees.
Preferably: from the pore size relation, the sleeve hole is larger than the sleeve, the bolt through hole is larger than the screw rod, and the screw rod has allowance in the sleeve.
Preferably: the bottom of the lower connecting seat is provided with a disc spring, the screw rod penetrates through the disc spring, and the bottom of the disc spring is locked by a nut.
Preferably: the side surfaces of the upper-layer frame and the lower-layer frame are also provided with connecting flat plates, the connecting flat plates are flat plates, and the connecting flat plates are used for connecting the upper-layer frame, the lower-layer frame, the container and the suspension together.
Compared with the prior art, the invention has the beneficial effects that:
firstly, a double-layer frame structure is adopted, so that the bearing capacity is increased compared with the traditional single-layer structure, and the vehicle load capacity is greatly improved; 710L of girder steel is adopted between each layer of the frame as the material of the longitudinal beam and the cross beam, or the bent pipe steel with the strength equivalent to that of the girder is adopted as the material of the cross beam, so that the strength of the bent pipe steel is increased, the design requirement of the bearing capacity is met, the cross beam is combined with the flat plate beam, the bent pipe beam is adopted at the bending resistant part, and the flat plate beam is adopted at the main bearing part, so that the deformation resistance of the bent pipe beam is strong.
Moreover, a double-layer small-section frame structure is adopted, the section height of the single-layer structural beam is only 260-350, and the fracture possibility is low. And the lining beam is arranged on the inner side of the longitudinal beam web plate of the lower-layer frame, so that the bending strength is increased.
Furthermore, the invention adopts an upper layer of frame and a lower layer of frame, the two layers of frames are connected with each other through a connecting flat plate and a flexible connecting seat, the connecting seat is in a special structural form of a connecting block, a sleeve and a screw, the sleeve and the screw freely move in the vertical direction, the two layers of frames are also in elastic connection, so that the two frames are not damaged when a vehicle body is stressed by vertical force, the sleeve is used for protecting in the shearing force direction, the wall thickness is close to 30 centimeters, the two frames cannot be transversely cut, and the inner screw is also protected; and a connecting flat plate is arranged at the position of the middle rear shaft, and the frame, the container and the suspension are rigidly connected to form a whole.
Therefore, the invention can realize large-tonnage transportation, the payload capacity reaches 65 tons, and the full-load capacity reaches 105 tons, and the invention is suitable for severe transportation conditions such as desert, gobi, mud and the like.
Drawings
The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention.
FIG. 1 is a pictorial view of the integral vehicle frame of the present invention;
FIG. 2 is a top deck frame view of the present invention;
FIG. 3 is a cross-sectional view of the upper frame 1;
FIG. 4 is a cross-sectional view of the upper frame at the 3 rd position;
FIG. 5 is a cross-sectional view of the upper frame at the 4 th cross-member;
FIG. 6 is a view of the upper frame cross member at 10;
FIG. 7 is a view of the lower frame;
FIG. 8 is a front view of the 1 st cross member of the lower frame;
FIG. 9 is a rear view of the 1 st cross member of the lower frame;
FIG. 10 is a cross-sectional view of the lower frame 2;
FIG. 11 is a cross-sectional view of the lower frame member at position 3;
FIG. 12 is a cross-sectional view of the 4 th rail of the lower frame;
FIG. 13 is a cross-sectional view of the 7 th lower frame;
FIG. 14 is a cross-sectional view of the lower frame 9;
FIG. 15 is a connecting view of the upper and lower frame connecting bases;
FIG. 16 is a front view of the upper connecting seat;
FIG. 17 is a front view of the lower connecting seat;
FIG. 18 is a top and bottom deck frame attachment plate.
Detailed Description
The invention is described in detail below with reference to the attached drawing figures, which form a part hereof, and examples of the invention, which together with the examples of the invention serve to explain the invention. However, it should be understood by those skilled in the art that the following examples are not intended to limit the scope of the present invention, and any equivalent changes or modifications made within the spirit of the present invention should be considered as falling within the scope of the present invention.
Description of the drawings: except for specific descriptions, the units of linear dimensions such as length, width, height, thickness and the like are all mm, and are not indicated below.
As a great characteristic of the invention, the frame is divided into an upper layer and a lower layer, so that the front end of the container is prevented from being transversely cut. Referring to fig. 1, the bicycle comprises an upper frame I and a lower frame II. The upper frame I is located the upper surface of the lower frame II, the side surfaces of the upper and lower frames are connected through the connecting seat structure III and the connecting plate IV, the lower frame II is longer than the upper frame I, the rear end is neat, and the front end lower frame II is longer than the upper frame I. The length, width and height of the overall dimension of the frame assembly are as follows: 14910X 1440X 930.
(I) Upper layer vehicle frame
Referring to fig. 2, the upper frame adopts two longitudinal beams and 10 cross beams, the 1 st to 10 th cross beams 101 to 110, the frame outer width 1200, the longitudinal beam total length 13140, 710L girder steel, no lining beam inside and the section dimension 260 × 100 × 10. The two longitudinal beams are symmetrically arranged in a [ ]shape, and the radius of the inner fillet at the upper bending part and the lower bending part is R12. Two longeron front ends cut down to the hypotenuse, and the short lower limb of last border is long in order to dodge the locomotive installed part.
The 10 cross beams are overlapped between the two longitudinal beams at intervals, the desert transport vehicle is provided with three groups of wheels, from the vehicle head to the vehicle tail, the 1 st cross beam is positioned near the central line of a front shaft, the 7 th cross beam is positioned near the central line of a middle shaft, and the 9 th cross beam is positioned near the central line of a rear shaft.
The 1 st and 2 nd cross beams are universal in structure, only different in external connecting piece and belong to the bent pipe beam, as shown in fig. 3, the 1 st cross beam is taken as an example and comprises a bent pipe beam body 101-1, a reinforcing rib 101-2 and a connecting plate 101-3, the diameter, the wall thickness and the bending shape of the bent pipe beam body are the same as those of a cross beam at a corresponding position of a lower-layer frame, the length of a pipe is slightly different, the bending radian is 150 degrees, and the radius is R1000. The bent pipe beam body, the reinforcing ribs and the connecting plate are of a welding structure, the reinforcing ribs are uniformly welded on the outer peripheral surface of the end part of the bent pipe beam body, the connecting plate is welded on the section of the end part of the bent pipe beam body, the reinforcing ribs are welded with the connecting plate at the same time, and the connecting plate is provided with bolt holes for being connected with a longitudinal beam web. Web thickness 14 and rib thickness 12. In addition, an external hanging connecting piece 102-4 is welded on the outer side surface of the elbow beam body. The pipe beams and the plates are made of materials which have the mechanical property equivalent to that of 710L girder steel and are suitable for welding.
The 3 rd, 5 th and 8 th cross beams are universal in structure, are different in external connecting pieces and belong to straight tubular beams, and as shown in fig. 4, the 3 rd cross beam is taken as an example and comprises a straight tubular beam body 103-1, reinforcing ribs 103-2, a connecting plate 103-3, the outer diameter of the straight tubular beam body is 180, and the wall thickness is 6. And reinforcing ribs and connecting plates are welded at two ends of the straight tubular beam body, the connecting plates are flat plates and are in bolted connection with the longitudinal beam web, and the plate thickness is 14. The outer wall of the straight pipe beam body is welded with an external hanging connecting piece 103-4.
The 4 th, 6 th, 7 th and 9 th cross beams are universal, all adopt 710L girder steel, and are of flat plate beam structures. As shown in fig. 5, taking the example of the beam 4, the overall height 208 of the beam structurally includes a beam body 104-1, a reinforcing rib 104-2 and a connecting plate 104-3, the beam body is transverse in a [ "shape (or reverse direction), and includes an upper web plate, a lower web plate and a side vertical plate, and the side vertical plate is provided with a through hole; reinforcing ribs 104-2 are arranged on the inner side surfaces of the two ends of the beam body; the end part of the beam body is connected with a connecting plate 104-3; the connecting plate 104-3 is of a [ "shape and comprises an upper wing surface, a lower wing surface and a longitudinal wing surface, the upper wing surface and the lower wing surface are respectively connected with an upper web plate bolt and a lower web plate bolt of the cross beam body, and the longitudinal wing surface is connected with the longitudinal beam. The beam body is 8 thick, the connecting plate is 14 thick, the connecting plate airfoil width is 170, and the bending fillet radius R15. The connecting plate at the end part of the cross beam is a whole [ -shaped plate, and the strength of the whole large plate is greater than that of the two independent small plates.
The 10 th cross beam is also of a flat plate beam structure as shown in fig. 6, adopts 710L girder steel, and comprises a cross beam body 110-1 and connecting plates 110-2, wherein the cross beam body of the 10 th cross beam is wider than the cross beam bodies of the 4 th, 6 th, 7 th and 9 th cross beams, and the connecting plates are different. The connecting plates are L-shaped, two ends of the 10 th cross beam are respectively provided with two connecting plates, one surfaces of the two connecting plates are respectively connected to the upper web plate and the lower web plate of the cross beam body, and the other surfaces of the two connecting plates are connected to the longitudinal beam; and the two connecting plates at the same end are oppositely arranged, one is bent downwards, and the other is bent upwards. The beam body is wide, and two connecting plates are arranged oppositely for edge covering of the tail of the frame, so that the upper and lower wing surfaces of the connecting plates are leveled with the upper and lower surfaces of the beam body, and are leveled with the upper and lower surfaces of the longitudinal beam. Web thickness 10, fillet radius R12 for the fillet and airfoil width 170.
Whole upper frame except adopting welded structure between return bend body and strengthening rib, the link plate, all the other all are bolted connection structure, can allow to have certain deformation and allowance for movement, and convenient dismantlement is changed, and is better than the welded.
(II) lower layer vehicle frame
Referring to fig. 7, the lower frame adopts two longitudinal beams and 11 cross beams, the 1 st to 11 th cross beams 201 to 211, and the outer width of the frame is 1200. The total length 14615 of the longitudinal beam is 710L of girder steel, the section size of the longitudinal beam is 350 multiplied by 100 multiplied by (12 + 10), the two longitudinal beams are symmetrically arranged in a [ ]shape, and the radius of the inner fillet at the upper bending part and the lower bending part is R15.
Different from the upper-layer frame, the lining beam 20 is arranged on the inner side of the longitudinal beam web plate of the lower-layer frame, referring to fig. 15, the lining beam mainly has the functions of bending resistance and bending strength increase, the lining beam adopts an upper and a lower split L-shaped sections, and a separation gap is reserved between the upper and the lower lining beams to reserve allowance for deformation. The upper surface and the lower surface of the two sections of lining beams are attached to the longitudinal beam airfoil, the section dimension is 153 multiplied by 88 multiplied by 10, the total length of the lining beam is 12295, the radius of the bending fillet is not more than R15, and the lining beam is 710L girder steel.
11 crossbeams overlap joint between two longerons at interval, from the locomotive to the rear of a vehicle, and the 1 st crossbeam is located the longeron foremost, near 2 nd, 3 nd crossbeam front axle central line, and 7 th, 8 th crossbeam is located near the axis central line, and the 9 th crossbeam is located near the rear axle central line.
The 1 st cross beam and the 11 th cross beam are universal and are respectively positioned at the foremost end and the rearmost end of the longitudinal beam, 710L girder steel is adopted and is of an all-welded structure, the 1 st cross beam is taken as an example and structurally comprises a cross beam body 201-1, a connecting plate 201-2 and reinforcing ribs 201-3, as shown in figures 8 and 9, the cross beam body is of a box-type structure surrounded by five surfaces, the opening end of a box body faces inwards, and transverse reinforcing ribs 201-3 and longitudinal reinforcing ribs 201-3 are arranged in the box body; two vertical side surfaces of the box body are directly connected with the longitudinal beam web plate through bolts, and the bottom surface of the box body is welded with a connecting plate outwards. The connecting plates are three layers, bolt holes and welding gaskets are arranged on the connecting plates, and the connecting plates on the front cross beam and the rear cross beam are used for vehicle traction. The 1 st crossbeam and the 11 th crossbeam are all welded structures, can guarantee the rigidity structurally. The connection with the longitudinal beam adopts a bolt structure, so that the longitudinal beam can be conveniently detached and replaced.
The 2 nd, 3 rd, 4 th, 5 th and 6 th cross beams are all of bent pipe beam structures, the 7 th, 8 th and 10 th cross beams are all of straight pipe beam structures, and the 9 th cross beam is a flat plate beam structure made of 710L girder steel.
The No. 2 cross beam is located at the front support of the front plate spring, welded structure and a bent pipe beam, as shown in figure 10, and comprises a bent pipe beam body 202-1, reinforcing ribs 202-2 and a connecting plate 202-3, wherein the outer diameter of the bent pipe beam body is 140, the wall thickness is 6, the central bending radius R600 of the bent pipe beam is 110 degrees. The reinforcing ribs are welded on the circumferential surfaces of two ends of the bent pipe beam body, the end faces are welded with the connecting plates, the reinforcing ribs are welded with the connecting plates at the same time, and bolt holes are formed in the connecting plates and used for being connected with the longitudinal beams. The thickness of the connecting plate is 14, the thickness of the reinforcing rib plate is 12, and the pipe beam and the plate are made of materials which have the same mechanical properties as 710L girder steel and are suitable for welding.
The 3 rd cross beam is located at the rear support of the front plate spring, the welding structure, the bent pipe beam, the outer diameter of the bent pipe beam body is 140, the wall thickness is 6, and the 3 rd cross beam is different from the 2 nd cross beam in that the central bending radius R1000 of the bent pipe beam is 150 degrees, as shown in figure 11. The two ends of the bent pipe beam body 203-1 are also welded with reinforcing ribs 203-2 and connecting plates 203-3.
The connecting plates at the end parts of the No. 2 cross beam and the No. 3 cross beam are L-shaped in integral shape and are only partially different according to the requirements of installation positions, one wing surface of each connecting plate is connected with the web of the longitudinal beam, and the other wing surface of each connecting plate is connected with the bottom surface of the longitudinal beam, so that the connecting strength of the cross beams and the longitudinal beams is improved.
The 4 th, 5 th and 6 th cross beams are also welded structure bent pipe beams as shown in fig. 12, taking the 4 th cross beam as an example, the circumferential surfaces of two ends of a bent pipe beam body 204-1 are welded with reinforcing ribs 204-2, and the end parts are welded with connecting plates 204-3, and the cross beams are not in the main bearing area of the vehicle body, so the connecting plates can be plane plates and are only connected with the webs of the longitudinal beams through bolts, and the thickness of the plates is 14. The 4 th and 5 th cross beams are completely universal, a transmission shaft hanging bracket 204-4 is welded in the middle of the outer wall of the tubular beam, and an adjustable bolt hole is formed in the bracket. The 6 th cross beam cancels a middle transmission shaft hanging bracket on the basis of the 4 th cross beam. The pipe beam and the plate are made of materials which have the same mechanical property as 710L girder steel and are suitable for welding.
The 7 th, 8 th and 10 th cross beams are straight tubular beams, as shown in fig. 13, the straight tubular beam body 207-1, the reinforcing ribs 207-2 and the connecting plates 207-3 are also welded structures, the outer diameter of the tubular beam is 180 ℃, and the wall thickness is 6. And reinforcing ribs and connecting plates are welded at two ends of the straight tubular beam body, the connecting plates are also flat plates and are in bolted connection with the longitudinal beam web, and the plate thickness is 14. And a support accessory 207-4 is welded in the middle position of the outer wall of the tubular beam of the 7 th cross beam. The 8 th and 10 th cross beams are completely universal, and the 8 th and 10 th cross beams do not need a middle welding support on the basis of the 7 th cross beam.
The 9 th cross beam is located at the rear suspension, is made of 710L girder steel, is of a special structure, and comprises two cross beam bodies 209-1 and four connecting plates 209-2, wherein the two cross beam bodies are universal, and the four connecting plates are universal, as shown in FIG. 14. The two beam bodies are arranged in a shape like the Chinese character 'ji' back to back and are separated, and the two beam bodies are arranged at the position to increase the connecting strength of the position. Two crossbeam bodies are at the last flank of same end and are connected a connecting plate jointly, and the lower flank is connected another connecting plate jointly, and both ends are all so. The connecting plate is "L" type, and one end is connected with crossbeam body airfoil, and the other end is connected with longeron web. The beam body is long 1020, the section is high 275.5, the main beam is thick 12, and the upper and lower wing surfaces are thick 8; the web is long 2020, wide 225 and thick 14.
The whole lower-layer frame is formed by stamping/rolling except that the 1 st cross beam and the 11 th cross beam are subjected to stamping welding and pipe beams are welded, is connected by high-strength bolts and self-locking nuts, is convenient to disassemble, allows local compression deformation, belongs to flexible connection and is better than welding.
The invention adopts the upper and lower layer frames, the single layer frame has small section and small possibility of fracture, the two layers are spliced, and the strength and the rigidity are also satisfied.
(III) connection between upper and lower layer frames
As another great characteristic of the invention, the upper and lower two-layer frame is connected with the connecting flat plate IV through the connecting seat structure III on the side surface, as shown in figure 1. The connecting seat structure ensures that the elastic connection is realized in the vertical direction, and the bolts in the vertical direction only bear the tensile force and do not bear the shearing force. The connecting seat structure comprises an upper connecting seat 3, a lower connecting seat 4 and a screw rod 5, wherein the upper connecting seat is arranged on the side surface of the upper-layer frame, and the lower connecting seat is arranged on the side surface of the lower-layer frame, as shown in fig. 15.
The upper connecting seat structure is shown in fig. 16 and comprises an auxiliary plate 31, wherein the auxiliary plate is connected to a longitudinal beam through a bolt; the auxiliary plate is welded with a connecting block 32, a bolt through hole 33 is formed in the connecting block, a sleeve 34 is welded at the bottom of the connecting block, the sleeve 34 is concentric with the bolt through hole 33, and the sleeve is communicated with the bolt through hole and used for inserting the screw 5. Further, a reinforcing rib 35 is provided between the attachment plate and the connection block.
The lower connecting socket structure is shown in fig. 17 and also comprises an attachment plate 36 and a connecting block 37, which is provided with a sleeve hole 38 for inserting the sleeve of the upper connecting socket. From the diameter size relationship: the sleeve hole 38 is larger than the sleeve 34, the bolt through hole 33 is larger than the screw rod 5. As shown in fig. 15, when the upper and lower connecting seats are connected, the screw rod 5 penetrates from the upper connecting seat, passes through the sleeve to reach the lower connecting seat, and then penetrates out of the lower connecting seat to be locked by the nut 6. Because the screw rod does not directly contact upper and lower connecting seat, so can not directly receive the shearing force, be equivalent to double connection between upper and lower connecting seat, on the one hand through muffjoint, on the other hand is through the screw rod connection, sleeve external diameter 60, internal diameter 31, screw rod nominal diameter 30, the sleeve is because the wall is than thick, so receive the shearing force also difficult rupture. Therefore, the structural connection ensures that the stress in the vertical direction of the frame is relieved by the telescopic sleeve and the transverse direction of the frame is basically not influenced by the shearing force, so that certain buffering can be kept between the upper frame and the lower frame when the frame is stressed.
Further, the bottom of the lower connecting seat is provided with a disc spring 7, as shown in fig. 15, the disc spring 7 is sleeved on the screw rod 5 and locked by the nut 6, and the disc spring 7 is arranged, so that the upper connecting seat and the lower connecting seat have certain elasticity, namely flexible connection.
The special rigid-flexible connecting seat structure is characterized in that an upper connecting seat is connected with an upper-layer frame through a screw rod, a lower connecting seat is connected with a lower-layer frame through a screw rod, and the upper connecting seat and the lower connecting seat are connected together through a screw rod, a plurality of disc springs and nuts. Thus realizing the fixed connection between the upper and the lower frames. The connecting seat has the functions of: firstly, fixedly connecting an upper layer frame and a lower layer frame together; and secondly, when the frame is distorted, the impact load is buffered through the micro deformation of the butterfly spring pad and the micro displacement of the screw rod, the flexible component is increased, the impact force is reduced, and the strength of the frame is improved.
The connection plate IV is connected to the side surfaces of the upper and lower frames by screws as shown in fig. 18. The connecting flat plate is mainly arranged at the position of the middle rear shaft and rigidly connects the frame, the container and the suspension upper support. The lower part of the connecting flat plate is connected with the lower frame through bolts, and the upper part of the connecting flat plate is connected and fixed with the upper frame and the lower frame through bolts after being compacted. The function is as follows: firstly, an upper frame and a lower frame are fixedly connected into a whole; and secondly, preventing the upper frame and the lower frame from moving and dislocating.
The connecting seat structure and the connecting flat plate are arranged in a plurality at intervals along the length direction of the frame.
In general, the total length of the frame provided by the invention can reach 15m, which is not standard length, but meets the bearing requirement. Most of the steel adopts 710L girder steel, and the yield strength can reach 700 MPa; the upper and lower connecting seats are connected between the upper and lower layers of the frame, and the upper and lower connecting seats are connected by a sleeve and an internal screw rod. Therefore, the invention has the advantages of rigid-flexible combination, rigid connection and flexible connection, most of the connection is bolt connection, and the connection is flexible and is not easy to break. Moreover, the cross beam is provided with a flat plate beam and a bent pipe beam, so that the cross beam is easy to machine, and the square pipe arched beam is not easy to machine into an arch. The 9 th cross beam of the lower frame is anti-torsion back to back, and the two cross beams are separated and respectively connected to the suspension above to realize torsion resistance. The inner layer and the outer layer of the lower frame are provided with lining beams, and the lining beams of the inner layer are designed in two sections to provide deformation allowance, mainly bending resistance.
Claims (10)
1. The utility model provides a heavy desert transport vechicle frame assembly which characterized in that: the upper frame and the lower frame are arranged in an up-and-down stacking mode, the upper frame and the lower frame are aligned at the tail of the vehicle, and the upper frame is shorter than the lower frame at the front end of the vehicle;
the upper-layer frame consists of two longitudinal beams and 10 cross beams, the two longitudinal beams are symmetrically arranged in a [ ]shape, the 10 cross beams are arranged between the two longitudinal beams at intervals, two ends of each cross beam are provided with connecting plates, and the connecting plates are connected to the longitudinal beams through bolts; from front to back, the 1 st and 2 nd cross beams are of bent pipe beam structures, the 3 rd, 5 th and 8 th cross beams are of straight pipe beam structures, the 4 th, 6 th, 7 th and 9 th cross beams are of flat plate beam structures in one form, and the 10 th cross beam is of a flat plate beam structure in another form;
the lower-layer frame consists of two longitudinal beams and 11 cross beams, the two longitudinal beams are symmetrically arranged in a [ "and" ] "shape, the 11 cross beams are arranged between the two longitudinal beams at intervals, two ends of each cross beam are provided with connecting plates, and the connecting plates are connected to the longitudinal beams through bolts; the 1 st cross beam and the 11 th cross beam are universal from front to back, are respectively positioned at the foremost end and the rearmost end of the longitudinal beam and are of a five-surface surrounding all-welded box type structure, and the openings of the five-surface surrounding all-welded box type structure face inwards; the No. 2, 3, 4, 5 and 6 cross beams are of bent tube beam structures; the 7 th, 8 th and 10 th cross beams are all in a straight tube beam structure; a 9 th cross beam flat beam structure; the 9 th cross beam comprises two cross beam bodies and four connecting plates, the two cross beam bodies are arranged in a '[' shape back to back mode and are separated, the upper wing surfaces of the two cross beam bodies at the same end are connected with one connecting plate together, the lower wing surfaces at the same end are also connected with one connecting plate together, the connecting plates are in an 'L' shape, one end of each connecting plate is connected with the wing surface of each cross beam body, and the other end of each connecting plate is connected with the longitudinal beam web plate;
the upper frame and the lower frame are connected through a connecting seat structure on the side face, the connecting seat structure comprises an upper connecting seat and a lower connecting seat, the upper connecting seat comprises an auxiliary plate, the auxiliary plate is fixed on the upper frame through a bolt, a connecting block is welded on the auxiliary plate, a bolt through hole is formed in the connecting block, a sleeve is welded at the bottom of the connecting block, and the sleeve is concentric with and communicated with the bolt through hole;
the lower connecting seat comprises an attached plate, the attached plate is fixed on the lower-layer frame through a bolt, a connecting block is welded on the attached plate, a sleeve hole is formed in the connecting block, the sleeve is inserted into the sleeve hole when the upper connecting seat and the lower connecting seat are connected, and a screw rod penetrates through the bolt through hole and the sleeve.
2. The frame assembly of a heavy desert transport vehicle as claimed in claim 1, wherein: all the longitudinal beams and the transverse beams of the flat plate beam structure are made of 710L girder steel.
3. The frame assembly of a heavy desert transport vehicle as claimed in claim 1, wherein: the front ends of the two longitudinal beams of the upper frame are inclined planes which are gradually heightened.
4. The frame assembly of a heavy desert transport vehicle as claimed in claim 1, wherein: and a lining beam is arranged in the lower-layer frame.
5. The frame assembly of a heavy desert transport vehicle as claimed in claim 1, wherein:
the 4 th, 6 th, 7 th and 9 th cross beams of the upper frame comprise cross beam bodies, reinforcing ribs and connecting plates, wherein the reinforcing ribs are arranged on the inner side surfaces of two ends of each cross beam body, and the ends of the cross beam bodies are connected with the connecting plates;
the beam body is transversely in a [ -shape and comprises an upper web plate, a lower web plate and a side vertical plate, and through holes are formed in the side vertical plate;
the connecting plate is of a [ -shape and comprises an upper wing surface, a lower wing surface and a longitudinal wing surface, the upper wing surface and the lower wing surface are respectively connected with an upper web plate bolt and a lower web plate bolt of the beam body, and the longitudinal wing surface is connected with the longitudinal beam;
the 10 th cross beam of the upper layer frame comprises a cross beam body and a connecting plate, the cross beam body is wider than the 4 th, 6 th, 7 th and 9 th cross beam bodies,
the beam body is transversely in a [ -shape and comprises an upper web plate, a lower web plate and a side vertical plate, and through holes are formed in the side vertical plate; two ends of the upper and lower web plates are respectively connected with a connecting plate;
the connecting plate is L-shaped; two connecting plates at the same end are oppositely arranged up and down, one is bent downwards, and the other is bent upwards.
6. The frame assembly of a heavy desert transport vehicle as claimed in claim 1, wherein: the diameters, the wall thicknesses and the bending shapes of the No. 1 crossbeam and the No. 2 crossbeam of the upper layer frame and the bent pipe beam body are the same as those of the No. 3 crossbeam of the lower layer frame.
7. The frame assembly of a heavy desert transport vehicle as claimed in claim 1 or 6, wherein: the center bending radius R600 of the No. 2 cross beam of the lower frame is 110 degrees; the 3 rd cross beam has a central bending radius R1000 of 150 degrees, and the 4 th, 5 th and 6 th cross beams have a central bending radius R1000 of 150 degrees.
8. The frame assembly of a heavy desert transport vehicle as claimed in claim 1, wherein: from the relationship of aperture size, the sleeve hole is larger than the sleeve, the bolt through hole is larger than the screw rod.
9. The frame assembly of a heavy desert transport vehicle according to claim 1 or 8, characterized in that: the bottom of the lower connecting seat is provided with a disc spring, the screw rod penetrates through the disc spring, and the bottom of the disc spring is locked by a nut.
10. The frame assembly of a heavy desert transport vehicle as claimed in claim 1, wherein: the side surfaces of the upper-layer frame and the lower-layer frame are also provided with connecting flat plates, the connecting flat plates are flat plates, and the connecting flat plates are used for connecting the upper-layer frame, the lower-layer frame, the container and the suspension together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210572678.1A CN114684269B (en) | 2022-05-25 | 2022-05-25 | Heavy desert transport vechicle frame assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210572678.1A CN114684269B (en) | 2022-05-25 | 2022-05-25 | Heavy desert transport vechicle frame assembly |
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| CN114684269A true CN114684269A (en) | 2022-07-01 |
| CN114684269B CN114684269B (en) | 2023-06-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116890916A (en) * | 2023-08-29 | 2023-10-17 | 东风商用车有限公司 | Beam assembly, frame and vehicle |
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| CN215205063U (en) * | 2021-04-26 | 2021-12-17 | 北京福田戴姆勒汽车有限公司 | Freight train frame and cargo vehicle that has it |
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| CN102501901A (en) * | 2011-10-31 | 2012-06-20 | 北京三兴汽车有限公司 | Full floating connecting support |
| CN203005527U (en) * | 2012-11-22 | 2013-06-19 | 云南力帆骏马车辆有限公司 | Reinforcing connecting plate for longitudinal beam and cross beams of frame at balanced suspension installation position of double rear axle vehicle |
| CN203402250U (en) * | 2013-08-21 | 2014-01-22 | 安徽江淮汽车股份有限公司 | Frame assembly of heavy-duty dump truck |
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| CN116890916A (en) * | 2023-08-29 | 2023-10-17 | 东风商用车有限公司 | Beam assembly, frame and vehicle |
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| CN114684269B (en) | 2023-06-20 |
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