CN115143221B - Rear axle hydro-pneumatic suspension for mining dump truck - Google Patents
Rear axle hydro-pneumatic suspension for mining dump truck Download PDFInfo
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- CN115143221B CN115143221B CN202210942740.1A CN202210942740A CN115143221B CN 115143221 B CN115143221 B CN 115143221B CN 202210942740 A CN202210942740 A CN 202210942740A CN 115143221 B CN115143221 B CN 115143221B
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- mounting plate
- dump truck
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- 239000000725 suspension Substances 0.000 title claims abstract description 61
- 238000005065 mining Methods 0.000 title claims abstract description 21
- 239000000872 buffer Substances 0.000 claims abstract description 22
- 238000013016 damping Methods 0.000 claims description 16
- 238000009434 installation Methods 0.000 abstract description 7
- 230000005484 gravity Effects 0.000 abstract description 6
- 239000003921 oil Substances 0.000 description 15
- 239000010720 hydraulic oil Substances 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 230000035939 shock Effects 0.000 description 6
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 239000011797 cavity material Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/06—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid
- F16F9/061—Mono-tubular units
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G13/00—Resilient suspensions characterised by arrangement, location or type of vibration dampers
- B60G13/001—Arrangements for attachment of dampers
- B60G13/003—Arrangements for attachment of dampers characterised by the mounting on the vehicle body or chassis of the damper unit
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G13/00—Resilient suspensions characterised by arrangement, location or type of vibration dampers
- B60G13/02—Resilient suspensions characterised by arrangement, location or type of vibration dampers having dampers dissipating energy, e.g. frictionally
- B60G13/06—Resilient suspensions characterised by arrangement, location or type of vibration dampers having dampers dissipating energy, e.g. frictionally of fluid type
- B60G13/08—Resilient suspensions characterised by arrangement, location or type of vibration dampers having dampers dissipating energy, e.g. frictionally of fluid type hydraulic
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/34—Special valve constructions; Shape or construction of throttling passages
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/36—Special sealings, including sealings or guides for piston-rods
- F16F9/366—Special sealings, including sealings or guides for piston-rods functioning as guide only, e.g. bushings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/54—Arrangements for attachment
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/56—Means for adjusting the length of, or for locking, the spring or damper, e.g. at the end of the stroke
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
- B60G2202/20—Type of damper
- B60G2202/24—Fluid damper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
- B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
- B60G2204/45—Stops limiting travel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2222/00—Special physical effects, e.g. nature of damping effects
- F16F2222/12—Fluid damping
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2222/00—Special physical effects, e.g. nature of damping effects
- F16F2222/12—Fluid damping
- F16F2222/126—Fluid damping using gases
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
The invention belongs to the technical field of mining vehicles, and in particular relates to a rear axle hydro-pneumatic suspension for a mining dump truck, which comprises the following components: the bottom of the frame is provided with a lower cross beam; the mounting plate is fixedly arranged at the bottom of the frame; the suspension oil cylinders are symmetrically arranged on two sides of the mounting plate; the limiting component is arranged in the suspension oil cylinder; the buffer component is arranged on the suspension cylinder; and the lower hinge lug is arranged on the suspension cylinder. The suspension cylinder adopted by most dumper vehicles is in the form of an upper hinge lug and a lower hinge lug, and the two ends of the structural cylinder are better in stress, but because the installation distance is long, the upper hinge lugs of a plurality of frames are required to be arranged on the side surfaces of the frames for lowering the gravity center of the dumper, so that a longer force arm is formed at the connection position of the upper hinge lugs and the frames, and the frames are subjected to a larger torsion moment when being suspended and stressed, therefore, the dumper adopts a single hinge lug structure.
Description
Technical Field
The invention belongs to the technical field of mining vehicles, and particularly relates to a rear axle hydro-pneumatic suspension for a mining dump truck.
Background
The mining dump truck has the characteristics of large bearing capacity, short transportation distance and high transportation efficiency. The vehicle frame is often operated in a mining area or an engineering construction site, but because the installation distance is very long, a plurality of vehicle frames have to be arranged on the side surface of the vehicle frame for lowering the center of gravity of the whole vehicle, so that the connection position of the upper hinge lugs and the vehicle frame forms a longer force arm, the vehicle frame can receive a larger torsion moment when being hung under the stress, the service life of the vehicle frame can be reduced due to the occurrence of the moment, the travel of a hanging oil cylinder is limited, and the passing and shock absorption performance of the whole vehicle can not be improved.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a rear axle hydro-pneumatic suspension for a mining dump truck, which aims to solve the problems that because the installation distance is long, the gravity center of a plurality of frames is low, the upper hinge lugs are required to be arranged on the side surfaces of the frames, the connection positions of the upper hinge lugs and the frames form a longer moment arm, the frames can receive a larger torsion moment when being suspended and stressed, the service life of the frames is reduced due to the occurrence of the moment, the longitudinal space occupied by the hinge lugs is larger, the stroke of a suspension cylinder is limited, and the passing and shock absorption of the whole vehicle can not be improved.
The invention adopts the following specific technical scheme:
a rear axle hydro-pneumatic suspension for a mining dump truck, comprising:
The bottom of the frame is provided with a lower cross beam;
The mounting plate is fixedly arranged at the bottom of the frame;
the suspension oil cylinders are symmetrically arranged on two sides of the mounting plate;
The limiting component is arranged outside the suspension cylinder;
the buffer component is arranged on the suspension cylinder;
and the lower hinge lug is arranged on the suspension cylinder.
According to the rear axle hydro-pneumatic suspension for the mining dump truck, the rotation angle of the suspension cylinder is limited through the limiting component, the buffer component buffers when the suspension cylinder is subjected to pressure bearing, and most of the suspension cylinders adopted by the dump truck are in the form of upper and lower hinge lugs, so that the two ends of the structural cylinders are better in stress, but because the installation distance is long, a plurality of frames have to be arranged on the side surfaces of the frames for lowering the gravity center of the whole truck, the connection position of the upper hinge lugs and the frames forms a longer moment arm, the frames can receive a larger torsion moment when the frames are subjected to suspension stress, the moment can reduce the service life of the frames and occupy a larger longitudinal space, the stroke of the suspension cylinders is limited, and the passing and shock absorption performance of the whole truck cannot be improved.
As a preferable technical scheme of the invention, the suspension oil cylinder comprises a cylinder barrel, a piston and a piston rod;
The cylinder barrels are symmetrically arranged on two sides of the mounting plate, and damping holes are formed in the cylinder barrels;
The piston is fixedly arranged in the cylinder barrel;
the piston rod is movably connected in the piston.
As a preferable technical scheme of the invention, the limiting component comprises a pin shaft ring base, a pin shaft ring and a limiting ring;
The pin shaft ring base is fixedly arranged on the periphery of the cylinder barrel;
The pin shaft ring is arranged on the pin shaft ring base, and the inner surface of the pin shaft ring and the outer surface of the pin shaft ring base are spherical surfaces matched with each other;
the limiting ring is arranged on the cylinder barrel, the limiting ring is positioned above the pin shaft ring, and an annular groove is formed between the limiting ring and the pin shaft ring.
As a preferable technical scheme of the invention, the buffer component comprises a buffer ring;
The buffer ring is sleeved in the annular groove.
As a preferable technical scheme of the invention, the invention also comprises a one-way valve;
the one-way valve is arranged on the cylinder barrel and used for adjusting the speed of oil.
As a preferable technical scheme of the invention, a cylinder inner cavity is arranged in the cylinder.
As a preferable technical scheme of the invention, an annular cavity is formed between the cylinder barrel and the piston rod.
As a preferable technical scheme of the invention, the cylinder barrel comprises a guide sleeve, and the guide sleeve is arranged at the outlet of the cylinder barrel and is used for guiding the piston rod.
As a preferable technical scheme of the invention, the lower hinge lug is fixedly arranged at the bottom of the piston rod.
As a preferable technical scheme of the invention, the cylinder barrel is arranged between the lower beam and the mounting plate through a pin collar, a plurality of bolts are arranged on the mounting plate, and the mounting plate is connected with the lower beam through the bolts.
The beneficial effects of the invention are as follows:
1. Because the upper hinge lug is eliminated, the space originally belonging to the upper hinge lug is replaced by the cylinder barrel, and more working strokes can be arranged in the same installation space. Compared with other structural vehicle types, the vehicle can effectively improve the trafficability and shock absorption of the whole vehicle.
2. Because the bottom cross beam and the frame form a box structure, the girder only receives ground support reaction force transmitted by the bottom cross beam. The torsion moment caused by the suspension cylinder to the frame is avoided, and the stress structure of the frame is improved.
The working principle of the invention is as follows:
1. the inner cavity and the annular cavity of the piston rod cylinder barrel are filled with hydraulic oil, and pure nitrogen or an external energy accumulator is filled in the cylinder. When the vehicle runs on the road surface, the fluctuation of the road surface is transmitted to the oil-gas suspension through the wheels, and the piston rod, the piston and the like do reciprocating motion in the cylinder barrel. The load increases and the piston rod piston is pressed into the cylinder when the hydro-pneumatic suspension is in the compression stroke. The volume of the large cavity is reduced, the volume of the annular cavity is increased, the volume of the large cavity is larger than the volume of the annular cavity, hydraulic oil and gas in the large cavity flow into the annular cavity through the one-way valve and the damping hole, and meanwhile, when the air pressure is increased to balance the external load, the piston rod piston stops moving. Because the check valve and the damping hole are opened simultaneously during the compression stroke, the oil liquid flows through the ground to have larger flowing area, the flow velocity is slower, and the generated resistance is smaller.
2. The resistance of the upward movement of the piston rod piston is mainly the elastic force generated by compressed gas so as to alleviate impact, load is reduced, when the hydro-pneumatic suspension is in an extension stroke, the piston rod piston extends out of the cylinder barrel, the atmospheric pressure of the atmosphere chamber is reduced, the volume is increased, the oil in the ring chamber flows into the atmosphere chamber through the damping hole, and when the air pressure in the air chamber is reduced to be balanced with external load, the piston rod piston stops moving. When the hydraulic oil cylinder stretches, the one-way valve is closed, the flow speed of oil flowing through the damping hole is increased, the damping force is increased so as to quickly attenuate vibration, the suspension oil cylinder can rotate in a limited angle through the fact that the inner surface of the pin shaft ring and the outer surface of the pin shaft ring base are spherical surfaces matched with each other, and the rotation angle is limited by the upper limiting ring and the buffer ring.
Drawings
The present invention is further described below with reference to the accompanying drawings for the convenience of understanding by those skilled in the art.
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is a diagram of the use of the present invention;
fig. 3 is a schematic cross-sectional view of the cylinder barrel of the present invention after tilting.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only 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.
Referring to fig. 1-3, a rear axle hydro-pneumatic suspension for a mining dump truck, comprising:
a frame 1, wherein a lower cross beam 101 is arranged at the bottom of the frame 1;
the mounting plate 2 is fixedly arranged at the bottom of the frame 1;
The suspension cylinders 3 are symmetrically arranged on two sides of the mounting plate 2;
the limiting component 4 is arranged outside the suspension cylinder 3;
a buffer member 5, the buffer member 5 being provided on the suspension cylinder 3;
And the lower hinge lug 6 is arranged on the suspension cylinder 3.
According to the rear axle hydro-pneumatic suspension for the mining dump truck, the rotation angle of the suspension cylinder 3 is limited through the limiting part 4, the buffer part 5 buffers when the suspension cylinder 3 is subjected to pressure, and most of the dump trucks adopt the suspension cylinder 3 in the form of the upper hinge lug 6 and the lower hinge lug 6, so that the two ends of the structural cylinder are better in stress, but because the installation distance is long, a plurality of frames 1 are required to be lower in the gravity center of the whole truck, the upper hinge lugs are required to be arranged on the side surfaces of the frames 1, a longer force arm is formed at the connection position of the upper hinge lugs and the frames 1, the frames 1 are subjected to a larger torsion moment when the frames are subjected to suspension stress, the service life of the frames 1 is reduced, the larger longitudinal space occupied by the hinge lugs is caused due to the occurrence of the moment, the limited stroke of the suspension cylinder 3, and the influence on the passing and shock absorption of the whole truck cannot be improved, so that the single hinge lug structure is adopted.
Further preferably, the suspension cylinder 3 includes a cylinder 301, a piston 302, and a piston 302 rod;
The cylinder 301 is symmetrically arranged on two sides of the mounting plate 2, and damping holes are formed in the cylinder 301;
The piston 302 is fixedly arranged in the cylinder 301;
the piston 302 rod is movably coupled within the piston 302.
Specifically, the inner cavity and the annular cavity 9 of the rod cylinder 301 of the piston 302 are filled with hydraulic oil, and pure nitrogen or an external accumulator is filled in the oil cylinder. When the vehicle is running on the road surface, the fluctuation of the road surface is transmitted to the hydrocarbon reservoir through the wheels, and the piston 302 reciprocates in the cylinder 301 such as the rod piston 302
Further preferably, the limiting component 4 comprises a pin collar 402 base 401, a pin collar 402 and a limiting ring 403;
the bracket collar 402 base 401 is fixedly arranged on the periphery of the cylinder 301;
the pin shaft ring 402 is mounted on the pin shaft ring 402 base 401, and the inner surface of the pin shaft ring 402 and the outer surface of the pin shaft ring 402 base 401 are spherical surfaces matched with each other;
the limiting ring 403 is mounted on the cylinder 301, the limiting ring 403 is located above the pin shaft ring 402, and an annular groove is formed between the limiting ring 403 and the pin shaft ring 402.
Specifically, the suspension cylinder 3 can be rotated within a limited angle by the inner surface of the pin collar 402 and the outer surface of the base 401 of the pin collar 402 being a spherical surface, and the rotation angle is limited by the upper limit ring 403 and the buffer ring 501.
Further preferably, the buffer member 5 includes a buffer ring 501;
the buffer ring 501 is sleeved in the annular groove.
Specifically, the suspension cylinder 3 can be rotated within a limited angle by the inner surface of the pin collar 402 and the outer surface of the base 401 of the pin collar 402 being a spherical surface, and the rotation angle is limited by the upper limit ring 403 and the buffer ring 501.
Further preferably, the device also comprises a one-way valve 7;
the check valve 7 is mounted on the cylinder 301 for adjusting the speed of the oil.
Specifically, when the air pressure within the air chamber falls to balance the external load, the piston 302 stops moving along with the rod 302. During the stretching process, the one-way valve 7 is closed, the flow speed of oil flowing through the damping hole is increased, and the damping force is increased so as to quickly attenuate vibration.
Further preferably, an inner cavity of the cylinder 301 is disposed in the cylinder 301.
Specifically, the cylinder 301 is provided with an inner cavity for facilitating the movement of the rod of the piston 302.
Further preferably, an annular chamber 9 is formed between the cylinder 301 and the piston 302 rod.
In particular, the annular chamber 9 is used for damping when the piston 302 is rod-active.
Further preferably, the cylinder 301 includes a guide sleeve 10, and the guide sleeve 10 is disposed at an outlet of the cylinder 301, for guiding the rod of the piston 302.
In particular, the guide sleeve 10 is used to guide the rod of the piston 302.
Further preferably, the lower hinge lug 6 is fixedly arranged at the bottom of the rod of the piston 302.
Specifically, the suspension cylinder 3 adopted by most dump truck vehicles is in the form of an upper hinge lug 6 and a lower hinge lug 6, the two ends of the structural cylinder are better in stress, but because the installation distance is very long, a plurality of frames 1 have to be arranged on the side surface of the frame 1 for lowering the center of gravity of the whole truck, so that a longer moment arm is formed at the connection position of the upper hinge lug and the frame 1, the frame 1 can bear a larger torsion moment when being suspended and stressed, the occurrence of the moment can cause the service life of the frame 1 to be reduced, the hinge lug occupies a larger longitudinal space, the stroke of the suspension cylinder 3 is limited, the passing of the whole truck can not be improved, and the shock absorption is influenced, so the invention adopts a single hinge lug structure.
Further preferably, the cylinder 301 is mounted between the lower beam 101 and the mounting plate 2 through a pin collar 402, a plurality of bolts 11 are provided on the mounting plate 2, and the mounting plate 2 is coupled with the lower beam 101 through the bolts 11.
Specifically, the frame 1, the mounting plate 2 and the lower cross member 101 form a box structure, and the ground support reaction force is transmitted to the lower bottom surface of the frame 1 through the mounting plate 2 and the lower cross member 101.
Compared with the prior art, the rear axle hydro-pneumatic suspension for the mining dump truck has the advantages that the inner cavity and the annular cavity of the cylinder barrel of the piston rod are filled with hydraulic oil, and pure nitrogen or an external energy accumulator is filled in the cylinder. When the vehicle runs on the road surface, the fluctuation of the road surface is transmitted to the oil-gas suspension through the wheels, and the piston rod, the piston and the like do reciprocating motion in the cylinder barrel. The load increases and the piston rod piston is pressed into the cylinder when the hydro-pneumatic suspension is in the compression stroke. The volume of the large cavity is reduced, the volume of the annular cavity is increased, the volume of the large cavity is larger than the volume of the annular cavity, hydraulic oil and gas in the large cavity flow into the annular cavity through the one-way valve and the damping hole, and meanwhile, when the air pressure is increased to balance the external load, the piston rod piston stops moving. The check valve and the damping hole are simultaneously opened during the compression stroke, oil flows through the ground to have larger flowing area, the flow speed is slower, the generated resistance is smaller, the upward movement resistance of the piston rod piston is mainly the elastic force generated by compressed gas, so that the impact is relaxed, the load is reduced, the piston rod piston extends out of the cylinder barrel when the hydro-pneumatic suspension is in the extension stroke, the atmospheric pressure is reduced, the volume is increased, the oil in the annular cavity flows into the large cavity through the damping hole, and the piston rod piston stops moving when the air pressure in the air cavity is reduced to be balanced with the external load. When the hydraulic oil cylinder stretches, the one-way valve is closed, the flow speed of oil flowing through the damping hole is increased, the damping force is increased so as to quickly attenuate vibration, the suspension oil cylinder can rotate in a limited angle through the fact that the inner surface of the pin shaft ring and the outer surface of the pin shaft ring base are spherical surfaces matched with each other, and the rotation angle is limited by the upper limiting ring and the buffer ring.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (7)
1. A rear axle hydro-pneumatic suspension for a mining dump truck, comprising:
The bottom of the frame is provided with a lower cross beam;
The mounting plate is fixedly arranged at the bottom of the frame;
the suspension oil cylinders are symmetrically arranged on two sides of the mounting plate;
The limiting component is arranged outside the suspension cylinder;
the buffer component is arranged on the suspension cylinder;
The lower hinge lug is arranged on the suspension cylinder;
the frame, the mounting plate and the lower cross beam form a box structure;
the suspension oil cylinder comprises a cylinder barrel, a piston and a piston rod;
The cylinder barrels are symmetrically arranged on two sides of the mounting plate, and damping holes are formed in the cylinder barrels;
The piston is fixedly arranged in the cylinder barrel;
The piston rod is movably connected in the piston;
the limiting component comprises a pin shaft ring base, a pin shaft ring and a limiting ring;
the pin shaft ring base is fixedly arranged on the periphery of the cylinder barrel;
The pin shaft ring is arranged on the pin shaft ring base, and the inner surface of the pin shaft ring and the outer surface of the pin shaft ring base are spherical surfaces matched with each other;
The limiting ring is arranged on the cylinder barrel, the limiting ring is positioned above the pin shaft ring, and an annular groove is formed between the limiting ring and the pin shaft ring;
The cylinder barrel is installed between the lower beam and the mounting plate through a pin collar, a plurality of bolts are arranged on the mounting plate, and the mounting plate is connected with the lower beam through the bolts.
2. A rear axle hydro-pneumatic suspension for a mining dump truck as defined by claim 1 wherein,
The buffer component comprises a buffer ring;
The buffer ring is sleeved in the annular groove.
3. The rear axle hydro-pneumatic suspension for a mining dump truck of claim 2, further comprising a check valve;
the one-way valve is arranged on the cylinder barrel and used for adjusting the speed of oil.
4. A rear axle hydro-pneumatic suspension for a mining dump truck as defined by claim 1 wherein,
A cylinder inner cavity is arranged in the cylinder.
5. A rear axle hydro-pneumatic suspension for a mining dump truck as defined by claim 1 wherein,
An annular cavity is formed between the cylinder barrel and the piston rod.
6. A rear axle hydro-pneumatic suspension for a mining dump truck as defined by any one of claims 2-5 wherein,
The cylinder barrel comprises a guide sleeve, wherein the guide sleeve is arranged at the outlet of the cylinder barrel and used for guiding the piston rod.
7. A rear axle hydro-pneumatic suspension for a mining dump truck as defined by claim 1 wherein,
The lower hinge lug is fixedly arranged at the bottom of the piston rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210942740.1A CN115143221B (en) | 2022-08-08 | 2022-08-08 | Rear axle hydro-pneumatic suspension for mining dump truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210942740.1A CN115143221B (en) | 2022-08-08 | 2022-08-08 | Rear axle hydro-pneumatic suspension for mining dump truck |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115143221A CN115143221A (en) | 2022-10-04 |
| CN115143221B true CN115143221B (en) | 2024-06-07 |
Family
ID=83413897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210942740.1A Active CN115143221B (en) | 2022-08-08 | 2022-08-08 | Rear axle hydro-pneumatic suspension for mining dump truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115143221B (en) |
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| CN201934415U (en) * | 2011-01-20 | 2011-08-17 | 无锡英特帕普威孚液压有限责任公司 | Telescopic sleeve type hydraulic cylinder with flared opening on tail part of outer cylinder sleeve |
| CN206983648U (en) * | 2017-07-26 | 2018-02-09 | 徐州徐工矿山机械有限公司 | Mining articulated truck front suspension hanging oil cylinder and drag link compound connection structure |
| CN108591164A (en) * | 2018-05-08 | 2018-09-28 | 徐州徐工液压件有限公司 | A kind of shock-absorbing type flexible linking device of multistage hydraulic cylinder |
| CN111688425A (en) * | 2020-02-25 | 2020-09-22 | 中国北方车辆研究所 | Accumulator vertical balance hydro-pneumatic suspension |
| CN213676297U (en) * | 2020-11-12 | 2021-07-13 | 中联重科股份有限公司 | Front axle suspension device and dumper |
| CN113124083A (en) * | 2021-04-14 | 2021-07-16 | 北京科技大学 | Hydro-pneumatic spring and car |
| CN215321855U (en) * | 2021-08-05 | 2021-12-28 | 陕西同力重工股份有限公司 | Front axle hydro-pneumatic suspension ring beam structure of flexible frame dumper |
| CN216033586U (en) * | 2021-11-18 | 2022-03-15 | 陕西同力重工股份有限公司 | Front oil-gas suspension structure of wide-body dumper |
-
2022
- 2022-08-08 CN CN202210942740.1A patent/CN115143221B/en active Active
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| DE10038267A1 (en) * | 2000-08-04 | 2002-02-14 | Audi Ag | Device for body mounting of spring strut of motor vehicle's wheel suspension has additional bearing for support spring formed by spherical cup in spring holder and support plate with spherical section, forming spherical slide bearing |
| CN201934415U (en) * | 2011-01-20 | 2011-08-17 | 无锡英特帕普威孚液压有限责任公司 | Telescopic sleeve type hydraulic cylinder with flared opening on tail part of outer cylinder sleeve |
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| CN108591164A (en) * | 2018-05-08 | 2018-09-28 | 徐州徐工液压件有限公司 | A kind of shock-absorbing type flexible linking device of multistage hydraulic cylinder |
| CN111688425A (en) * | 2020-02-25 | 2020-09-22 | 中国北方车辆研究所 | Accumulator vertical balance hydro-pneumatic suspension |
| CN213676297U (en) * | 2020-11-12 | 2021-07-13 | 中联重科股份有限公司 | Front axle suspension device and dumper |
| CN113124083A (en) * | 2021-04-14 | 2021-07-16 | 北京科技大学 | Hydro-pneumatic spring and car |
| CN215321855U (en) * | 2021-08-05 | 2021-12-28 | 陕西同力重工股份有限公司 | Front axle hydro-pneumatic suspension ring beam structure of flexible frame dumper |
| CN216033586U (en) * | 2021-11-18 | 2022-03-15 | 陕西同力重工股份有限公司 | Front oil-gas suspension structure of wide-body dumper |
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| Publication number | Publication date |
|---|---|
| CN115143221A (en) | 2022-10-04 |
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