CN117446020A - Chassis system and mining vehicle - Google Patents
Chassis system and mining vehicle Download PDFInfo
- Publication number
- CN117446020A CN117446020A CN202311333870.6A CN202311333870A CN117446020A CN 117446020 A CN117446020 A CN 117446020A CN 202311333870 A CN202311333870 A CN 202311333870A CN 117446020 A CN117446020 A CN 117446020A
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- frame assembly
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- push rod
- hinged
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- 238000005065 mining Methods 0.000 title claims abstract description 18
- 239000000725 suspension Substances 0.000 claims abstract description 232
- 238000013016 damping Methods 0.000 claims abstract description 15
- 238000003466 welding Methods 0.000 claims abstract description 13
- 230000003014 reinforcing effect Effects 0.000 claims description 34
- 230000007246 mechanism Effects 0.000 claims description 16
- 230000007704 transition Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 6
- 230000003139 buffering effect Effects 0.000 abstract description 5
- 230000007547 defect Effects 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 5
- 238000012546 transfer Methods 0.000 abstract description 4
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 239000003351 stiffener Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
- B60G11/26—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
- B60G11/26—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs
- B60G11/28—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs characterised by means specially adapted for attaching the spring to axle or sprung part of the vehicle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G7/00—Pivoted suspension arms; Accessories thereof
- B60G7/008—Attaching arms to unsprung part of vehicle
-
- 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
- B62D21/11—Understructures, i.e. chassis frame on which a vehicle body may be mounted with resilient means for suspension, e.g. of wheels or engine; sub-frames for mounting engine or suspensions
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
The invention relates to the field of dumpers, and provides a chassis system and a mining vehicle. So set up, adopt integral type welding frame, compare with current main and auxiliary riveting frame, its structural strength is high, effectively reduces the frame fracture phenomenon, promotes bearing capacity, increase of service life. The suspension system adopts the hydro-pneumatic spring to replace the leaf spring, so that the buffering and damping performance and the structural reliability of the whole machine can be improved, and the defects caused by the leaf spring are eliminated. The longitudinal thrust rod can transmit longitudinal force, so that the stability of up-and-down runout of the wheels is ensured. The transverse thrust rod can transfer lateral force to ensure that the chassis transversely moves. Therefore, the stability of the suspension assembly is improved, and the safety of the vehicle in the running and working processes is ensured.
Description
The present application claims priority from chinese patent application filed at month 26 of 2023, 09, under application number 202311259039.0, entitled "chassis system and mining vehicle", the entire contents of which are incorporated herein by reference.
Technical Field
The invention relates to the technical field of dumpers, in particular to a chassis system and a mining vehicle.
Background
In specific places such as surface mines, a non-road mining dump truck is usually required for completing rock and earth stripping and ore transportation, and the working characteristics of the non-road mining dump truck are short transportation distance, heavy load and frequent reciprocating to and from a mining point and an ore discharge point.
At present, a non-road mining dump truck adopts a riveted frame, and an auxiliary frame is connected with a chassis main frame in a riveting mode. And the suspension structure adopts a leaf spring suspension to transfer force and force torsion between the wheels and the frame and buffer impact force transferred to the frame or the vehicle body by the uneven road surface, thereby reducing vibration caused by the impact force and ensuring that the vehicle can run smoothly.
However, due to the severe transportation environment of mining areas, the ore density is high, the overload of vehicles is serious, the riveting frame is extremely easy to damage, and the failure rate is high. As the mining becomes larger, the transportation equipment becomes more loaded, and the leaf springs are the main load bearing members and shock absorbing members, and there is a problem of frequent breakage, so that the above problem is alleviated by increasing the thickness of the leaf springs. When the thickness of the plate spring is too thick, the hardenability of the material is poor, so that the mechanical property of the plate spring is reduced, the fault of the plate spring fracture is higher, and the bearing and damping requirements cannot be met.
Disclosure of Invention
The invention aims to provide a chassis system and a mining vehicle, and aims to at least solve one of the technical problems in the prior art or related technologies.
In order to achieve the above object, the present invention provides a chassis system comprising:
the frame assembly, the frame assembly sets up as an organic whole formula welding frame, the frame assembly includes:
the longitudinal beams are distributed at intervals along the width direction of the frame assembly, are arranged along the length direction of the frame assembly, and comprise a first Ping Liangbu, an inclined transition part and a second flat beam part which are sequentially arranged, and the height position of the first Ping Liangbu is lower than that of the second flat beam part;
at least two cross beams welded between the two first flat beam parts, wherein the cross beams are arranged along the width direction of the frame assembly;
the box body structure is welded between the two second flat beam parts, at least two longitudinal reinforcing ribs and at least two transverse reinforcing ribs are arranged in the box body structure, the longitudinal reinforcing ribs are arranged along the length direction of the frame assembly, the transverse reinforcing ribs are in cross connection with the longitudinal reinforcing ribs, and two ends of the transverse reinforcing ribs are respectively connected with the two second flat beam parts;
the front suspension assembly comprises a front suspension oil gas spring and a front suspension connecting rod guide mechanism, one end of the front suspension oil gas spring is hinged with the longitudinal beam, the other end is hinged with the front axle,
the front suspension connecting rod guide mechanism comprises a front suspension longitudinal push rod and a front suspension transverse push rod, the front suspension longitudinal push rod is arranged along the length direction of the frame assembly, one end of the front suspension longitudinal push rod is hinged with the frame assembly, the other end of the front suspension longitudinal push rod is hinged with the front axle,
the front suspension transverse pushing rod is arranged along the width direction of the frame assembly, one end of the front suspension transverse pushing rod is hinged with the frame assembly, and the other end of the front suspension transverse pushing rod is hinged with the front axle.
Preferably, the chassis system provided according to the present invention further includes:
the rear suspension assembly comprises a rear suspension oil gas spring and a rear suspension connecting rod guide mechanism, one end of the rear suspension oil gas spring is hinged with the longitudinal beam, the other end of the rear suspension oil gas spring is hinged with the rear axle,
the rear suspension connecting rod guide mechanism comprises a rear suspension longitudinal push rod and a rear suspension transverse push rod, the rear suspension longitudinal push rod is arranged along the length direction of the frame assembly, one end of the rear suspension longitudinal push rod is hinged with the frame assembly, the other end of the rear suspension longitudinal push rod is hinged with the rear axle,
the rear suspension transverse pushing rod is arranged along the width direction of the frame assembly, one end of the rear suspension transverse pushing rod is hinged with the frame assembly, and the other end of the rear suspension transverse pushing rod is hinged with the rear axle.
Preferably, according to the chassis system provided by the invention, the rear axle comprises a first rear axle and a second rear axle, the first rear axle and the second rear axle are respectively provided with the rear suspension oil gas springs,
the rear suspension assembly further includes:
the energy accumulator is arranged on the frame assembly, is positioned between the first rear axle and the second rear axle, and is used for adjusting the rigidity of the two rear suspension oil gas springs;
the energy accumulator valve bank is arranged on the energy accumulator and comprises a first oil inlet, a second oil inlet and a damping oil port, wherein the first oil inlet and the second oil inlet are respectively communicated with the oil cavity oil ports of the two rear suspension oil gas springs, and the damping oil port is communicated with the oil cavity oil ports of the energy accumulator.
Preferably, according to the chassis system provided by the invention, the first rear axle and the second rear axle are respectively provided with two groups of rear suspension longitudinal pushing rods, the two groups of rear suspension longitudinal pushing rods are distributed at intervals along the width direction of the frame assembly,
each group of rear suspension longitudinal pushing rods comprises a first rear suspension longitudinal pushing rod and a second rear suspension longitudinal pushing rod, and the first rear suspension longitudinal pushing rods and the second rear suspension longitudinal pushing rods are distributed at intervals along the height direction of the frame assembly.
Preferably, according to the chassis system provided by the invention, the front axle is provided with two groups of front suspension longitudinal pushing rods, the two groups of front suspension longitudinal pushing rods are distributed at intervals along the width direction of the frame assembly,
each group of front suspension longitudinal pushing rods comprises a first front suspension longitudinal pushing rod and a second front suspension longitudinal pushing rod, and the first front suspension longitudinal pushing rods and the second front suspension longitudinal pushing rods are distributed at intervals along the height direction of the frame assembly.
Preferably, the chassis system provided according to the present invention further comprises a first front suspension pushrod support, the first front suspension pushrod support comprising:
the connecting seats are distributed at intervals along the width direction of the frame assembly, the connecting seats are connected with the frame assembly, and one ends of the first front suspension longitudinal push rod and the second front suspension longitudinal push rod are hinged with the connecting seats;
and the reinforcing piece is arranged along the width direction of the frame assembly, and two ends of the reinforcing piece are respectively connected with the two connecting seats.
Preferably, the chassis system provided according to the present invention further comprises a second front suspension pushrod support, the second front suspension pushrod support comprising:
the pair of third vertical plates are distributed at intervals along the width direction of the frame assembly, the third vertical plates are connected with the front axle, and the other ends of the first front suspension longitudinal push rod and the second front suspension longitudinal push rod are hinged with the third vertical plates;
and the second rib plate is connected between the pair of third vertical plates.
Preferably, the chassis system provided by the present invention further includes a rear suspension balance beam mount, the rear suspension balance beam mount including:
the balance supports are distributed at intervals along the width direction of the frame assembly, are connected with the frame assembly, are positioned between the first rear axle and the second rear axle, are hinged to the first rear suspension longitudinal push rod and the second rear suspension longitudinal push rod on the first rear axle, are hinged to the balance supports, and are hinged to the first rear suspension longitudinal push rod and the second rear suspension longitudinal push rod on the second rear axle;
the connecting piece is arranged along the width direction of the frame assembly, and two ends of the connecting piece are respectively connected with the two balance supports;
and the pair of supporting seats are respectively connected with the pair of balance supports and are used for installing the energy accumulator.
Preferably, according to the chassis system provided by the invention, the longitudinal reinforcing ribs and the transverse reinforcing ribs are provided with a plurality of hollowed-out parts.
The invention also provides a mining vehicle comprising a chassis system as claimed in any one of the preceding claims.
One of the above technical solutions has the following advantages or beneficial effects:
the present invention provides a chassis system comprising: the frame assembly, frame assembly sets up as an organic whole formula welding frame, and the frame assembly includes: the longitudinal beams are distributed at intervals along the width direction of the frame assembly, are arranged along the length direction of the frame assembly, and comprise a first Ping Liangbu, an inclined transition part and a second flat beam part which are sequentially arranged, and the height position of the first Ping Liangbu is lower than that of the second flat beam part; at least two cross beams welded between the two first flat beam parts, the cross beams being arranged along the width direction of the frame assembly; the box body structure is welded between the two second flat beam parts, at least two longitudinal reinforcing ribs and at least two transverse reinforcing ribs are arranged in the box body structure, the longitudinal reinforcing ribs are arranged along the length direction of the frame assembly, the transverse reinforcing ribs are in cross connection with the longitudinal reinforcing ribs, and two ends of the transverse reinforcing ribs are respectively connected with the two second flat beam parts; the front suspension assembly comprises a front suspension oil gas spring and a front suspension connecting rod guide mechanism, one end of the front suspension oil gas spring is hinged with the longitudinal beam, the other end of the front suspension oil gas spring is hinged with the front axle, the front suspension connecting rod guide mechanism comprises a front suspension longitudinal push rod and a front suspension transverse push rod, the front suspension longitudinal push rod is arranged along the length direction of the frame assembly, one end of the front suspension longitudinal push rod is hinged with the frame assembly, the other end of the front suspension longitudinal push rod is hinged with the front axle, the front suspension transverse push rod is arranged along the width direction of the frame assembly, and one end of the front suspension transverse push rod is hinged with the frame assembly, and the other end of the front suspension transverse push rod is hinged with the front axle.
So set up, adopt integral type welding frame, compare with current main and auxiliary riveting frame, its structural strength is high, effectively reduces the frame fracture phenomenon, promotes bearing capacity, increase of service life. The suspension system adopts the hydro-pneumatic spring to replace the leaf spring, can promote the buffering damping performance and the structural reliability of complete machine, eliminates the defect that brings because the leaf spring, and vertical thrusting rod can transmit vertical force, guarantees the stability that the wheel beats from top to bottom, and horizontal thrusting rod can transmit lateral force, ensures that the chassis transversely leaps to promote the stability of suspension assembly, guaranteed the security of vehicle in driving and operation in-process.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a perspective view of a chassis system of one embodiment provided by the present invention;
FIG. 2 is a front view of a frame assembly according to one embodiment of the present invention;
FIG. 3 is a top view of a frame assembly according to one embodiment of the present invention;
FIG. 4 is a bottom view of a frame assembly according to one embodiment of the present invention;
FIG. 5 is a perspective view of a frame assembly according to one embodiment of the present invention;
FIG. 6 is a perspective view of a front suspension assembly according to one embodiment of the present invention;
FIG. 7 is a partial schematic view of FIG. 6 at A;
FIG. 8 is a front view of a first front suspension pushrod mount according to one embodiment provided by the present invention;
FIG. 9 is a side view of a first front suspension pushrod mount according to an embodiment provided by the present invention;
FIG. 10 is one of the perspective views of the rear suspension assembly of one embodiment provided by the present invention;
FIG. 11 is a second perspective view of a rear suspension assembly according to one embodiment of the present invention;
FIG. 12 is a perspective view of a rear suspension equalizer bar support according to one embodiment of the present invention;
reference numerals:
1: a frame assembly; 2: a front suspension assembly; 3: a rear suspension assembly; 4: a front axle; 5: a rear axle;
11: a longitudinal beam; 12: a cross beam; 13: a box structure;
111: first Ping Liangbu; 112: an inclined transition portion; 113: a second flat beam portion;
131: longitudinal reinforcing ribs; 132: transverse reinforcing ribs; 133: a hollowed-out part; 134: a top plate; 135: a bottom plate;
21: a front suspension oil gas spring; 22: a front suspension transverse push rod; 23: a first front-overhang longitudinal push rod; 24: a second front-overhang longitudinal push rod; 25: a first front-overhang pushrod support; 26: a second front-overhang pushrod support; 27: a front suspension oil gas spring support;
251: a connecting seat; 252: a reinforcing member;
2511: a first vertical plate; 2512: a second vertical plate; 2513: a first connection plate; 2514: a first sleeve;
2521: a connecting flange; 2522: a first rib; 2523; a tubular beam;
261: a third vertical plate; 262: a second rib; 263: a mounting base; 264: a third rib;
31: a rear suspension oil gas spring; 32: a rear-suspended transverse push rod; 33: a first rear-overhang longitudinal push rod; 34: a second rear-suspended longitudinal push rod; 35: an accumulator; 36: a rear suspension balance beam support; 37: a rear suspension oil gas spring support; 38: an accumulator valve block;
361: a balance support; 362: a connecting piece; 363: a support base; 364: a support base plate;
3611: a third vertical plate; 3612: a second connecting plate; 3613: a fourth rib;
3621: a lightening hole;
3631: a support plate; 3632: a fifth rib;
381: a first oil inlet; 382: a second oil inlet;
51: a first rear axle; 52: and a second rear axle.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The chassis system of some embodiments of the present invention is described below with reference to fig. 1 to 12.
As shown in fig. 1 to 12, an embodiment of the present invention provides a chassis system including a frame assembly 1, and a front suspension assembly 2. Specifically, as shown in FIG. 1, the frame assembly 1 is provided as an integrally welded frame. The frame assembly 1 includes a pair of longitudinal beams 11, at least two cross beams 12, and a box structure 13. As shown in fig. 3, two longitudinal beams 11 extend along the length direction of the frame assembly 1, and the two longitudinal beams 11 are spaced apart along the width direction of the frame assembly 1, i.e., symmetrically arranged on both sides of the frame. Specifically, as shown in fig. 2, the side member 11 includes a first Ping Liangbu, an inclined transition portion 112, and a second flat beam portion 113, which are disposed in this order from left to right, and the height position of the first Ping Liangbu is lower than the height position of the second flat beam portion 113. The front and rear layout of the whole car can be matched, and the front and rear suspension system is matched, so that the safety and stability of the whole car are ensured. It should be noted that, regarding the placement position of the chassis system as shown in fig. 3, the left-right direction in the drawing is the length direction of the frame assembly 1, and the up-down direction in the drawing is the width direction of the frame assembly 1; the vertical direction in the drawing is the height direction of the frame assembly 1, and the horizontal direction in the drawing is the left-right direction in the drawing, with respect to the placement position of the chassis system as shown in fig. 2.
As shown in fig. 3, each cross member 12 extends in the width direction of the frame assembly 1 and is welded and fixed between the two first Ping Liangbu 111, so that the structural rigidity of the front end of the frame is enhanced by each cross member 12, and the frame is ensured to have a sufficient carrying capacity. Specifically, taking the example shown in fig. 6, the number of the cross beams 12 may be three, and the heights of the cross beams 12 gradually decrease from left to right, so as to be convenient for matching the structural layout of each part installed on the frame, and also ensure the stability of the frame and protect the parts on the frame. The number, structure, etc. of the cross beams 12 may be specifically determined according to actual design requirements. In addition, the left-right direction in the drawing refers to the left-right direction in the placement position of the chassis system as shown in fig. 6.
The box structure 13 is welded between two second flat beam portions 113, inside which at least two longitudinal ribs 131 and at least two transverse ribs 132 are provided. As shown in fig. 5, the transverse reinforcing ribs 132 and the longitudinal reinforcing ribs 131 are cross-connected with each other, each longitudinal reinforcing rib 131 is disposed along the length direction of the frame assembly 1, each transverse reinforcing rib 132 is disposed along the width direction of the frame assembly 1, and both ends of each transverse reinforcing rib 132 are respectively welded to the two side second flat beam portions 113. Therefore, a box type welding structure is formed at the rear end of the frame, the firmness of the welding frame is effectively improved, and the structural rigidity of the frame is ensured. In the placement position of the chassis system shown in fig. 5, the left-right direction in the drawing is the longitudinal direction of the frame assembly 1, and the up-down direction in the drawing is the width direction of the frame assembly 1.
Like this, the whole welding of frame forms, reduces the local stress concentration phenomenon of frame, guarantees that the frame has higher structural strength, is suitable for the abominable, great mine transportation operating mode of load of operational environment, can satisfy the application demand such as user's maximization, benefit, high reliability, improves the life of frame, promotes the reliability and the load performance of frame to the whole life of extension vehicle reduces maintenance cost. Moreover, cancel traditional auxiliary frame structure, can also reduce whole car focus to a certain extent, promote whole car running stability and security.
The front suspension assembly 2 includes a front suspension oil gas spring 21 and a front suspension link guide mechanism. In general, front suspension oil springs 21 are disposed on both sides of the axle, and one end of each front suspension oil spring 21 is hinged to the corresponding longitudinal beam 11, and the other end of each front suspension oil spring is hinged to the corresponding front axle 4. Specifically, as shown in fig. 6, the upper end of the front suspension gas spring 21 is hinged to the frame assembly 1 through a front suspension gas spring holder 27, and the lower end of the front suspension gas spring 21 is hinged to the front axle 4. The oil gas spring is a variable-rigidity elastic element, the rigidity is small when the oil gas spring is in no load, the rigidity is increased along with load lifting, and the rigidity of the oil gas spring is increased when the tonnage of the load is large. Therefore, the vehicle can be ensured to have good running smoothness, particularly the mine vehicle, the road condition and the loading condition of the mine vehicle are very bad, the impact can be obviously relieved, the jolt is reduced, and the driving condition of a driver is improved.
The front suspension link guide mechanism includes a front suspension longitudinal push rod and a front suspension lateral push rod 22. The front suspension longitudinal push rod is arranged along the length direction of the frame assembly 1, one end of the front suspension longitudinal push rod is hinged with the longitudinal beam 11, and the other end of the front suspension longitudinal push rod is hinged with the front axle 4. The front suspension transverse push rod 22 is arranged along the width direction of the frame assembly 1, one end of the front suspension transverse push rod 22 is hinged with the frame assembly 1, and the other end is hinged with the front axle 4. It should be noted that, regarding the placement position of the chassis system as shown in fig. 6, the up-down direction in the drawing is the up-down direction, the direction indicated by the solid arrow in the drawing is the length direction of the frame assembly 1, and the direction indicated by the hollow arrow in the drawing is the width direction of the frame assembly 1.
So set up, adopt integral type welding frame, compare with current main and auxiliary riveting frame, its structural strength is high, effectively reduces the frame fracture phenomenon, promotes bearing capacity, increase of service life. The front suspension system adopts the hydro-pneumatic spring to replace the leaf spring, so that the buffering and damping performance and the structural reliability of the whole machine can be improved, and the defects caused by the leaf spring are eliminated. The longitudinal thrust rod can transmit longitudinal force, so that the stability of up-and-down runout of the wheels is ensured. The transverse thrust rod can transfer lateral force to ensure that the chassis transversely moves. Therefore, the stability of the suspension assembly is improved, and the safety and the comfort of the vehicle in the running and working processes are ensured.
In some embodiments of the present invention, the chassis system further comprises a rear suspension assembly 3, the rear suspension assembly 3 comprising a rear suspension gas spring 31 and a rear suspension link guide mechanism. Generally, as shown in fig. 11, rear suspension springs 31 are disposed on both sides of the axle, and one end of the rear suspension springs 31 is hinged to the longitudinal beam 11, for example, may be hinged to the rear suspension spring holders 37, and the other end of the rear suspension springs 31 is hinged to the rear axle 5.
The rear suspension connecting rod guide mechanism comprises a rear suspension longitudinal push rod and a rear suspension transverse push rod 32, the rear suspension longitudinal push rod is arranged along the length direction of the frame assembly 1, one end of the rear suspension longitudinal push rod is hinged with the frame assembly 1, and the other end of the rear suspension longitudinal push rod is hinged with the rear axle 5. The rear suspension transverse pushing rod 32 is arranged along the width direction of the frame assembly 1, one end of the rear suspension transverse pushing rod 32 is hinged with the frame assembly 1, and the other end is hinged with the rear axle 5. It should be noted that, in the placement position of the chassis system shown in fig. 11, the direction indicated by the solid arrow in the drawing is the length direction of the frame assembly 1, and the direction indicated by the hollow arrow in the drawing is the width direction of the frame assembly 1.
By the arrangement, the rear suspension assembly 3 also adopts an oil gas spring suspension system, so that the damping performance of the whole machine can be further improved. The full hydro-pneumatic spring suspension structure is constructed in this way, and the frame with the rigid welding structure is matched, so that the frame is prevented from being damaged due to overlarge load, the unsprung mass is light, the service life of the frame is prolonged, the problem of breakage of the leaf spring suspension is thoroughly solved, the service life of the whole vehicle and the safety of the whole vehicle are effectively improved, the whole vehicle is compact in overall layout, and the turning radius of the vehicle is greatly reduced.
In an alternative embodiment of the present invention, as shown in fig. 10, the rear axle 5 includes a first rear axle 51 and a second rear axle 52, and the first rear axle 51 and the second rear axle 52 are each provided with the rear suspension gas spring 31. The rear suspension assembly 3 further comprises an accumulator 35 and an accumulator valve group 38 arranged outside the accumulator 35, the accumulator 35 being used for assisting in adjusting the stiffness of the two rear suspension gas springs 31. The accumulator 35 is fixedly mounted to the frame assembly 1 and is disposed between the first rear axle 51 and the second rear axle 52. Generally, the rear suspension gas spring 31, the accumulator 35, and the accumulator valve block 38 are disposed on both sides of the first and second rear axles 51 and 52.
The accumulator valve block 38 includes a first oil inlet 381, a second oil inlet 382, and a damping oil port. The first oil inlet 381 and the second oil inlet 382 are respectively communicated with oil cavity ports of the two rear suspension oil springs 31, so that the oil cavity ports of the two rear suspension oil springs 31 on the same side are communicated with each other through the accumulator valve group 38. The damping oil port is communicated with the oil cavity oil port of the accumulator 35, so that oil in the two rear suspension oil springs 31 on the same side can also enter the oil cavity of the accumulator 35 through the damping port.
Typically, the accumulator 35 is provided with a low pressure chamber and a high pressure chamber. When the vehicle is empty, the oil in the two rear suspension oil springs 31 on the same side enters the oil cavity of the accumulator 35 to push the accumulator piston to compress the low-pressure air chamber. When the vehicle is fully loaded, the oil in the two rear suspension oil springs 31 on the same side enters the oil cavity of the accumulator 35, pushing the accumulator piston to simultaneously compress the low-pressure air chamber and the high-pressure air chamber. Therefore, the rigidity of the rear suspension oil gas spring 31 can be automatically adjusted according to the load tonnage.
By means of the arrangement, the rigidity of the rear suspension hydro-pneumatic spring 31 can be adaptively adjusted along with the increase of the load through the energy accumulator 35, and the application requirements of the hydro-pneumatic spring on the rigidity under different conditions of no-load and full-load are met. And the oil ports of the two rear suspension oil gas springs 31 positioned on the same side of the frame are communicated, so that all oil in the two rear suspension oil gas springs 31 is compensated in the oil cavities of each other, and then redundant part of oil enters the energy accumulator 35 from the damping port, so that the response speed of the oil gas springs is faster and more sensitive, the damping effect and comfort of the whole vehicle can be better improved, the protection performance of the whole vehicle is stronger, and the safety and reliability of the rear axle 5 are improved.
In some embodiments of the present invention, the first rear axle 51 and the second rear axle 52 are each provided with two sets of rear suspension longitudinal pushrods, as shown in fig. 11, and the two sets of rear suspension longitudinal pushrods of each axle are spaced apart along the width direction of the frame assembly 1. As shown in fig. 10, each group of rear suspended vertical pushrods includes a first rear suspended vertical pushrod 33 and a second rear suspended vertical pushrod 34, and the first rear suspended vertical pushrods 33 and the second rear suspended vertical pushrods 34 are spaced apart in the height direction of the frame assembly 1. It should be noted that, in the placement position of the chassis system shown in fig. 10, the direction indicated by the arrow in the drawing is the height direction of the frame assembly 1.
So set up, four vertical thrusting rods have been arranged about each rear axle, and two vertical thrusting rods of same side are arranged from top to bottom to ensure the motion stability of rear axle assembly in vertical direction of height. And the transverse thrust rod on each rear axle is matched, so that the chassis is ensured to transversely jump, the stability of a rear suspension system is further improved, and the safety of the vehicle in the running and operation processes is ensured.
As an alternative embodiment of the present invention, the front axle 4 is provided with two sets of front suspension longitudinal pushing rods, as shown in fig. 6, which are spaced apart along the width direction of the frame assembly 1. Each group of front suspension longitudinal pushing rods comprises a first front suspension longitudinal pushing rod 23 and a second front suspension longitudinal pushing rod 24, and the first front suspension longitudinal pushing rods 23 and the second front suspension longitudinal pushing rods 24 are distributed at intervals along the height direction of the frame assembly 1. It should be noted that, in the placement position of the chassis system shown in fig. 6, the up-down direction in the drawing is the height direction of the frame assembly 1.
The front suspension system is composed of four longitudinal thrust rods and one transverse thrust rod, each longitudinal thrust rod guides the motion of the vehicle in the vertical direction, the up-and-down jumping of the vehicle axle is alleviated, the transverse thrust rods guide the motion of the vehicle in the horizontal direction, the transverse inclination of the vehicle axle is alleviated, the impact load transferred to the vehicle frame by the uneven road surface is relieved, the vibration of the bearing system caused by the impact load is weakened, and the smooth running of the vehicle is ensured.
Further, in some embodiments of the present invention, the longitudinal reinforcing ribs 131 and the transverse reinforcing ribs 132 are provided with a plurality of hollowed-out portions 133, so that the weight of the frame is reduced to the maximum while the structural performance of the frame is ensured. In addition, as shown in fig. 3 and 4, the box structure 13 further includes a top plate 134 and a bottom plate 135, and a plurality of hollow parts 133 may be disposed on the bottom plate 135, which plays a role in reducing weight, and is convenient for connection with other components and layout design of related components.
In some embodiments of the present invention, the chassis system further includes a first front suspension pushrod support 25, and in particular, the first front suspension pushrod support 25 includes a pair of connection mounts 251 and a stiffener 252. As shown in fig. 8, two connection seats 251 are spaced apart in the width direction of the frame assembly 1 and are disposed across the frame. As shown in fig. 6, the connection base 251 is connected to the frame assembly 1, and one ends of the first front suspension longitudinal push rod 23 and the second front suspension longitudinal push rod 24 are hinged to the connection base 251. The reinforcement 252 is disposed along the width direction of the frame assembly 1, and both ends of the reinforcement 252 are respectively connected with the two connection seats 251.
Specifically, as shown in fig. 8 and 9, the connection holder 251 includes first and second risers 2511 and 2512 arranged at intervals in the width direction of the frame assembly 1, and a first connection plate 2513 is connected between the first and second risers 2511 and 2512 to ensure structural stability of the connection holder 251. The connecting base 251 can be welded to the side member 11 to ensure a stable connection of the connecting base 251 to the frame, so that the front suspension system can operate reliably. The upper and lower ends of the first and second vertical plates 2511 and 2512 are respectively and correspondingly provided with hinge holes for inserting hinge shafts so as to realize the rotational connection of the first and second front suspension longitudinal pushing rods 23 and 24 with the connection base 251. In addition, the first shaft sleeve 2514 can be arranged at each hinge hole position to support the hinge shaft and strengthen the connection strength of the hinge position, in addition, a certain limiting effect can be achieved, and the axial displacement of the longitudinal pushing rod along the hinge shaft is reduced, so that the connecting rod mechanism has a better guiding effect.
The stiffener 252 includes a girder 2523 and coupling flanges 2521 fixedly provided at both ends of the girder 2523, for example, the coupling flanges 2521 may be welded to the girder 2523. The coupling flange 2521 may be fixedly coupled to the first riser 2511 through a plurality of bolt assemblies, thereby coupling the reinforcement 252 and the two coupling seats 251 as one body. The ends of the girder 2523 sequentially pass through the first and second risers 2511 and 2512 to further strengthen the structural strength of the first front suspension putter support 25. Furthermore, a plurality of first ribs 2522 are arranged between the connection flange 2521 and the tubular beam 2523 to ensure the structural properties of the stiffener 252.
So set up, be convenient for each front overhang longitudinal push rod of frame both sides is articulated with the frame through first front overhang push rod support 25, convenient assembly and maintenance. In the placement position of the chassis system shown in fig. 8, the left-right direction in the drawing is the width direction of the frame assembly 1, and the up-down direction in the drawing is the up-down direction.
In some embodiments of the invention, the chassis system further comprises a second front overhang pushrod support 26, in particular, the second front overhang pushrod support 26 comprises a pair of third risers 261 and second ribs 262. As shown in fig. 6, the two third upright plates 261 are spaced apart in the width direction of the frame assembly 1, and the second rib 262 is connected between the two third upright plates 261, for example, by welding. The third vertical plate 261 is connected with the front axle 4, and the other ends of the first front suspension vertical push rod 23 and the second front suspension vertical push rod 24 are hinged with the third vertical plate 261.
Specifically, as shown in fig. 7, the upper and lower ends of the two third vertical plates 261 are respectively provided with hinge holes for inserting hinge shafts, so as to realize the rotational connection of the first front suspension longitudinal push rod 23 and the second front suspension longitudinal push rod 24 with the second front suspension push rod support 26, respectively. In addition, the second front suspension pushrod support 26 also includes a mounting seat 263 and a third rib 264. The mounting seat 263 can be welded and fixed on the front axle 4, and the two third vertical plates 261 are fixedly connected with the mounting seat 263, so that the front axle 4 can be conveniently connected with the mounting seat. The third rib 264 is connected between the third riser 261 and the front axle 4 to more firmly connect the second front suspension pushrod support 26 to the front axle 4.
So configured, assembly of each front rail to the front axle 4 is facilitated by the second front rail mount 26. In the placement position of the chassis system shown in fig. 7, the vertical direction in the drawing is the vertical direction.
In some embodiments of the present invention, the chassis system further includes a rear suspension equalizer beam holder 36, and in particular, the rear suspension equalizer beam holder 36 includes a pair of equalizer holders 361, a pair of support holders 363, and a connector 362. As shown in fig. 11, two balance brackets 361 are spaced apart in the width direction of the frame assembly 1. A balance mount 361 is connected to the frame assembly 1, the balance mount 361 being located between the first rear axle 51 and the second rear axle 52. The first rear overhang longitudinal pushing rod 33 and the second rear overhang longitudinal pushing rod 34 hinged on the first rear axle 51 are both hinged with the balance support 361, and the first rear overhang longitudinal pushing rod 33 and the second rear overhang longitudinal pushing rod 34 hinged on the second rear axle 52 are both hinged with the balance support 361. The connecting piece 362 is disposed along the width direction of the frame assembly 1, and both ends of the connecting piece 362 are respectively connected to two balance brackets 361. A pair of support seats 363 are respectively connected to the pair of balance brackets 361, and the support seats 363 are used for mounting the accumulator 35.
Specifically, as shown in fig. 12, the balance support 361 includes two third vertical plates 3611 arranged at intervals, and a second connection plate 3612 is connected between the two third vertical plates 3611 so that the balance support 361 is connected as a whole. The third vertical plate 3611 is further provided with a fourth rib 3613 to improve structural stability of the balance support 361. Four hinge holes are correspondingly formed in the two third vertical plates 3611 and are respectively used for connecting four rear suspension longitudinal pushing rods on the two rear axles. In addition, a second bushing may be installed at the hinge hole location to improve structural performance at the hinge.
The support 363 is fixedly connected to the third riser 3611, for example, by a welded connection, for mounting the accumulator 35. The support seat 363 comprises a support plate 3631 and a fifth rib plate 3632 arranged on the support plate 3631, the support plate 3631 is fixedly connected with the third vertical plate 3611, the energy accumulator 35 is fixedly arranged on the support plate 3631, and the fifth rib plate 3632 can further improve the support reliability of the support seat 363. In addition, the connecting member 362 is further provided with a weight reducing hole 3621. The bottoms of the balance brackets 361 and the connection pieces 362 are also connected with a supporting bottom plate 364 to make the structure of the rear suspension balance beam brackets 36 more stable.
By the arrangement, the layout connection of the four rear suspension longitudinal push rods on the two rear axles can be realized through the rear suspension balance beam support 36, and the installation is convenient. In the placement position of the chassis system shown in fig. 12, the left-right direction in the drawing is the width direction of the frame assembly 1, the up-down direction in the drawing is the up-down direction, and the lower end in the drawing is the bottom position.
In summary, some embodiments of the present invention provide a chassis system, in which the front and rear suspensions are all made of oil gas springs, and each axle is provided with a link guiding mechanism composed of four longitudinal thrusting rods and one transverse thrusting rod, and each rod meets the vehicle load-bearing requirement. Therefore, more reasonable pitching and rolling centers can be obtained, good pitching and rolling characteristics of the vehicle are guaranteed, the stability of movement of each axle in the vertical direction is guaranteed, the transverse movement of the chassis is guaranteed, the change of vehicle positioning parameters in a small range is guaranteed, the stability of a suspension assembly is further improved, the safety of the engineering vehicle in the running and operation process is guaranteed, the steering of the vehicle is facilitated, and the turning radius of the vehicle is reduced. And the rear suspension system is also provided with the energy accumulator 35, so that the overall rigidity of the suspension can be adaptively adjusted along with the increase of the load of the vehicle, the damage of the vehicle frame caused by overlarge local bearing of the vehicle frame is avoided, the unsprung mass is light, the service life of the vehicle frame is prolonged, the problem of breakage of the leaf spring suspension is thoroughly solved, the compensation before buffering can be realized, and the response speed is faster.
In order to realize that the high-rigidity oil gas spring is matched with the frame, the frame assembly 1 is designed into an integrated welding frame, compared with the existing riveting frame, the frame rigidity life is prolonged, the problem of frame cracking is effectively solved, the bearing capacity of the frame is improved, the auxiliary frame structure is canceled, the center of gravity of the whole vehicle is reduced, and the running stability and safety of the vehicle are improved. In addition, through setting up first front overhang push rod support 25, second front overhang push rod support 26 and back overhang compensating beam support 36 etc. the installation and the overall arrangement of suspension assembly of being convenient for to effectively alleviate whole car vibration, promote frame anti-torsion ability. Therefore, the chassis system can meet market demands, the defects of the existing off-road mining dump truck are optimally designed, and the competitiveness of transportation equipment in an off-road state can be greatly improved.
The mining vehicle provided by the invention is described below, and the mining vehicle described below and the chassis system described above can be referred to correspondingly.
The embodiment of the invention also provides a mining vehicle, which comprises the chassis system in each embodiment. So set up, adopt integral type welding frame, compare with current main and auxiliary riveting frame, its structural strength is high, effectively reduces the frame fracture phenomenon, promotes bearing capacity, increase of service life. The front suspension system adopts the hydro-pneumatic spring to replace the leaf spring, so that the buffering and damping performance and the structural reliability of the whole machine can be improved, and the defects caused by the leaf spring are eliminated. The longitudinal thrust rod can transmit longitudinal force, so that the stability of up-and-down runout of the wheels is ensured. The transverse thrust rod can transfer lateral force to ensure that the chassis transversely moves. Therefore, the stability of the suspension assembly is improved, and the safety and the comfort of the vehicle in the running and working processes are ensured. The development of the beneficial effects is substantially similar to that of the chassis system described above, and therefore will not be described in detail herein.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A chassis system, comprising:
frame assembly (1), frame assembly (1) sets up as an organic whole formula welding frame, frame assembly (1) include:
a pair of longitudinal beams (11) which are distributed at intervals along the width direction of the frame assembly (1), wherein the longitudinal beams (11) are arranged along the length direction of the frame assembly (1), the longitudinal beams (11) comprise a first Ping Liangbu (111), an inclined transition part (112) and a second flat beam part (113) which are sequentially arranged, and the height position of the first Ping Liangbu (111) is lower than that of the second flat beam part (113);
at least two cross members (12) welded between the two first Ping Liangbu (111), the cross members (12) being arranged in the width direction of the frame assembly (1);
the box body structure (13) is welded between the two second flat beam parts (113), at least two longitudinal reinforcing ribs (131) and at least two transverse reinforcing ribs (132) are arranged in the box body structure (13), the longitudinal reinforcing ribs (131) are arranged along the length direction of the frame assembly (1), the transverse reinforcing ribs (132) are in cross connection with the longitudinal reinforcing ribs (131), and two ends of the transverse reinforcing ribs (132) are respectively connected with the two second flat beam parts (113);
the front suspension assembly (2) comprises a front suspension oil gas spring (21) and a front suspension connecting rod guide mechanism, one end of the front suspension oil gas spring (21) is hinged with the longitudinal beam (11), the other end is hinged with the front axle (4),
the front suspension connecting rod guide mechanism comprises a front suspension longitudinal push rod and a front suspension transverse push rod (22), the front suspension longitudinal push rod is arranged along the length direction of the frame assembly (1), one end of the front suspension longitudinal push rod is hinged to the frame assembly (1), the other end of the front suspension longitudinal push rod is hinged to the front axle (4), the front suspension transverse push rod (22) is arranged along the width direction of the frame assembly (1), and one end of the front suspension transverse push rod (22) is hinged to the frame assembly (1), and the other end of the front suspension transverse push rod is hinged to the front axle (4).
2. The chassis system of claim 1, further comprising:
the rear suspension assembly (3) comprises a rear suspension oil gas spring (31) and a rear suspension connecting rod guide mechanism, one end of the rear suspension oil gas spring (31) is hinged with the longitudinal beam (11), the other end is hinged with the rear axle (5),
the rear suspension connecting rod guide mechanism comprises a rear suspension longitudinal push rod and a rear suspension transverse push rod (32), the rear suspension longitudinal push rod is arranged along the length direction of the frame assembly (1), one end of the rear suspension longitudinal push rod is hinged to the frame assembly (1), the other end of the rear suspension longitudinal push rod is hinged to the rear axle (5), the rear suspension transverse push rod (32) is arranged along the width direction of the frame assembly (1), and one end of the rear suspension transverse push rod (32) is hinged to the frame assembly (1), and the other end of the rear suspension transverse push rod is hinged to the rear axle (5).
3. Chassis system according to claim 2, characterized in that the rear axle (5) comprises a first rear axle (51) and a second rear axle (52), the first rear axle (51) and the second rear axle (52) being provided with the rear suspension gas springs (31),
the rear suspension assembly (3) further comprises:
the energy accumulator (35) is arranged on the frame assembly (1), the energy accumulator (35) is positioned between the first rear axle (51) and the second rear axle (52), and the energy accumulator (35) is used for adjusting the rigidity of the two rear suspension oil gas springs (31);
the energy accumulator valve group (38) is arranged on the energy accumulator (35), the energy accumulator valve group (38) comprises a first oil inlet (381), a second oil inlet (382) and a damping oil port, the first oil inlet (381) and the second oil inlet (382) are respectively communicated with two oil cavity oil ports of the rear suspension oil gas spring (31), and the damping oil port is communicated with the oil cavity oil port of the energy accumulator (35).
4. The chassis system according to claim 3, wherein the first rear axle (51) and the second rear axle (52) are each provided with two sets of rear suspension longitudinal push rods, the two sets of rear suspension longitudinal push rods being spaced apart in a width direction of the frame assembly (1),
each group of rear suspension vertical pushing rods comprises a first rear suspension vertical pushing rod (33) and a second rear suspension vertical pushing rod (34), and the first rear suspension vertical pushing rods (33) and the second rear suspension vertical pushing rods (34) are distributed at intervals along the height direction of the frame assembly (1).
5. Chassis system according to claim 1, wherein the front axle (4) is provided with two sets of said front suspension longitudinal pushrods, which are spaced apart in the width direction of the frame assembly (1),
each group of front suspension longitudinal pushing rods comprises a first front suspension longitudinal pushing rod (23) and a second front suspension longitudinal pushing rod (24), and the first front suspension longitudinal pushing rods (23) and the second front suspension longitudinal pushing rods (24) are distributed at intervals along the height direction of the frame assembly (1).
6. The chassis system of claim 5, further comprising a first front overhang pushrod support (25), the first front overhang pushrod support (25) comprising:
the connecting seats (251) are distributed at intervals along the width direction of the frame assembly (1), the connecting seats (251) are connected with the frame assembly (1), and one ends of the first front suspension longitudinal push rod (23) and the second front suspension longitudinal push rod (24) are hinged with the connecting seats (251);
and the reinforcing piece (252) is arranged along the width direction of the frame assembly (1), and two ends of the reinforcing piece (252) are respectively connected with the two connecting seats (251).
7. The chassis system of claim 5, further comprising a second front overhang pushrod support (26), the second front overhang pushrod support (26) comprising:
a pair of third vertical plates (261) which are distributed at intervals along the width direction of the frame assembly (1), wherein the third vertical plates (261) are connected with the front axle (4), and the other ends of the first front suspension longitudinal push rod (23) and the second front suspension longitudinal push rod (24) are hinged with the third vertical plates (261);
and a second rib (262) connected between the pair of third vertical plates (261).
8. The chassis system of claim 4, further comprising a rear overhang balance beam mount (36), the rear overhang balance beam mount (36) comprising:
a pair of balance supports (361) which are distributed at intervals along the width direction of the frame assembly (1), wherein the balance supports (361) are connected with the frame assembly (1), the balance supports (361) are positioned between the first rear axle (51) and the second rear axle (52), the first rear overhang longitudinal pushing rod (33) and the second rear overhang longitudinal pushing rod (34) hinged on the first rear axle (51) are hinged with the balance supports (361), and the first rear overhang longitudinal pushing rod (33) and the second rear overhang longitudinal pushing rod (34) hinged on the second rear axle (52) are hinged with the balance supports (361);
the connecting piece (362) is arranged along the width direction of the frame assembly (1), and two ends of the connecting piece (362) are respectively connected with the two balance supports (361);
and a pair of supporting seats (363) respectively connected with the pair of balance brackets (361), wherein the supporting seats (363) are used for installing the energy accumulator (35).
9. Chassis system according to claim 1, characterized in that the longitudinal (131) and the transverse (132) stiffening ribs are provided with a number of hollows (133).
10. A mining vehicle, characterized by comprising a chassis system according to any one of claims 1-9.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2023112590390 | 2023-09-26 | ||
| CN202311259039 | 2023-09-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117446020A true CN117446020A (en) | 2024-01-26 |
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ID=89592058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311333870.6A Pending CN117446020A (en) | 2023-09-26 | 2023-10-16 | Chassis system and mining vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117446020A (en) |
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2023
- 2023-10-16 CN CN202311333870.6A patent/CN117446020A/en active Pending
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