CN115143221A - 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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- CN115143221A CN115143221A CN202210942740.1A CN202210942740A CN115143221A CN 115143221 A CN115143221 A CN 115143221A CN 202210942740 A CN202210942740 A CN 202210942740A CN 115143221 A CN115143221 A CN 115143221A
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- suspension
- rear axle
- dump truck
- cylinder barrel
- mining dump
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- 239000000725 suspension Substances 0.000 title claims abstract description 68
- 238000005065 mining Methods 0.000 title claims abstract description 25
- 239000000872 buffer Substances 0.000 claims abstract description 19
- 238000009434 installation Methods 0.000 claims abstract description 13
- 238000013016 damping Methods 0.000 claims description 15
- 230000005484 gravity Effects 0.000 abstract description 5
- 239000003921 oil Substances 0.000 description 40
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 230000035939 shock Effects 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 5
- 239000010720 hydraulic oil Substances 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 230000002238 attenuated effect Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 239000011797 cavity material Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 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
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
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
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- 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
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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
- F16F9/34—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
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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
- F16F9/54—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
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- 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
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- 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
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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
- 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
Abstract
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, which comprises: 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 oil cylinder; and the lower hinge lug is arranged on the suspension oil cylinder. The suspension oil cylinders adopted by most dumper vehicles are in an upper hinge lug and a lower hinge lug form, the two ends of the oil cylinders are well stressed, but because the installation distance is long, and a plurality of frames have to arrange the upper hinge lugs on the side surfaces of the frames in order to lower the center of gravity of the whole vehicle, the connection positions of the upper hinge lugs and the frames form a long force arm, and the frames can bear a large torsional moment when being suspended and stressed, so the invention 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 carrying distance and high transportation efficiency. It often operates in mining area or engineering construction's building site, but because the installation distance demand is very long, a lot of frames have to arrange the hinge ear in the frame side for lower whole car focus, upward the hinge ear forms a longer arm of force with frame hookup location like this, the frame can receive a great torsional moment when hanging the atress, the appearance of this moment can cause the frame life-span to reduce, and the great longitudinal space that the hinge ear occupied, it is limited to hang the hydro-cylinder stroke, can't improve whole car and pass through and shock attenuation nature.
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 an installation distance is long, an upper hinge lug has to be arranged on the side surface of a frame for lowering the gravity center of the whole truck, so that a longer force arm is formed at the connecting position of the upper hinge lug and the frame, the frame can bear a larger torsional moment when the suspension is stressed, the service life of the frame is shortened due to the moment, the large longitudinal space occupied by the hinge lug is limited due to the stroke of a suspension oil cylinder, and the passing and shock absorption performance of the whole truck cannot be improved.
The invention adopts the following specific technical scheme:
the utility model provides a rear axle hydro-pneumatic suspension for mining dump truck which characterized in that includes:
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 oil cylinder;
and the lower hinge lug is arranged on the suspension oil cylinder.
The invention relates to a rear axle hydro-pneumatic suspension for a mining dump truck, which limits the rotation angle of a suspension oil cylinder through a limiting part, the suspension oil cylinder is buffered by the buffering part when bearing pressure is applied to the suspension oil cylinder, the suspension oil cylinder adopted by most dump truck vehicles is in an upper hinge lug and a lower hinge lug form, the two ends of the oil cylinder are well stressed, but because the installation distance requirement is very long, and a plurality of frames have to arrange the upper hinge lugs on the side surfaces of the frames for lowering the gravity center of the whole truck, a longer force arm is formed at the connecting position of the upper hinge lugs and the frames, the frames can bear a larger torsional moment when being suspended and stressed, the occurrence of the moment can cause the service life of the frames to be reduced, the longitudinal space occupied by the hinge lugs is larger, the stroke of the suspension oil cylinder is limited, and the passing and the shock absorption of the whole truck cannot be improved, so the rear axle hydro-pneumatic suspension for the mining dump truck adopts a single-hinge lug structure.
As the preferred 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 the preferable technical scheme of the invention, the limiting component comprises a pin collar base, a pin collar and a limiting ring;
the pin roll ring base is fixedly arranged on the periphery of the cylinder barrel;
the pin collar is arranged on the pin collar base, and the inner surface of the pin collar and the outer surface of the pin collar base are spherical surfaces which are matched with each other;
the limiting ring is installed on the cylinder barrel and located above the pin shaft collar, and an annular groove is formed between the limiting ring and the pin shaft collar.
As a preferable aspect of the present invention, the buffer member includes a buffer ring;
the buffer ring is sleeved in the annular groove.
As the preferable technical scheme of the invention, the invention also comprises a one-way valve;
the check valve is installed on the cylinder barrel and used for adjusting the speed of oil.
As the preferable technical scheme of the invention, a cylinder barrel inner cavity is arranged in the cylinder barrel.
As the 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 an outlet of the cylinder barrel and 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, the cylinder barrel is installed between the lower cross beam and the installation plate through a pin shaft ring, a plurality of bolts are arranged on the installation plate, and the installation plate is connected with the lower cross beam through the bolts.
The beneficial effects of the invention are as follows:
1. because the upper hinge lug is cancelled, 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 passing performance and the shock absorption performance can be effectively improved.
2. Because the bottom cross beam and the frame form a box-type structure, the crossbeam only receives the ground support reaction force transmitted by the bottom cross beam. The torsion moment of the frame caused by the suspension oil cylinder is avoided, and the stress structure of the frame is improved.
The working principle of the invention is as follows:
1. the inner cavity of the piston rod cylinder barrel and the annular cavity are filled with hydraulic oil, and pure nitrogen or an external energy accumulator is filled in the oil cylinder. When the vehicle runs on the road, the undulation of the road is transferred to the hydro-pneumatic suspension through the wheels, and the piston rod and the like do reciprocating motion in the cylinder barrel. The load is increased, and when the hydro-pneumatic suspension is in a compression stroke, the piston rod piston is pressed into the cylinder barrel. 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 check valve and the damping hole, and meanwhile, when the air pressure rises to be balanced with external load, the piston rod stops moving. Because the check valve and the damping hole are opened simultaneously during the compression stroke, the oil flows through the ground with large flow area, the flow speed is slow, and the generated resistance is small.
2. The resistance of the piston rod piston to move upwards is mainly the elastic force generated by compressed gas to relax the impact, the load is reduced, when the oil gas suspension is in the extension stroke, the piston rod piston extends out of the cylinder barrel, the air pressure of the big cavity is reduced, the volume is increased, the oil liquid in the annular cavity flows into the big cavity through the damping hole, and when the air pressure in the air cavity is reduced to be balanced with the external load, the piston rod piston stops moving. During the stretching process, the one-way valve is closed, the flow rate of oil flowing through the damping holes is accelerated, the damping force is increased, so that vibration is rapidly attenuated, the inner surface of the pin shaft ring and the outer surface of the pin shaft ring base are matched spherical surfaces, the suspension oil cylinder can rotate within a limited angle, and the rotation angle is limited by the upper limiting ring and the buffer ring.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is a use diagram of the present invention;
fig. 3 is a schematic sectional view of the inclined cylinder barrel of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, a rear axle hydro-pneumatic suspension for a mining dump truck is characterized by comprising:
the frame comprises 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 oil cylinders 3 are symmetrically arranged on two sides of the mounting plate 2;
the limiting component 4 is arranged in the suspension oil cylinder 3;
the buffer component 5 is arranged on the suspension oil cylinder 3;
and the lower hinge lug 6 is arranged on the suspension oil cylinder 3.
According to the rear axle hydro-pneumatic suspension for the mining dump truck, the rotation angle of the suspension oil cylinder 3 is limited through the limiting part 4, the buffer part 5 buffers when the suspension oil cylinder 3 is under pressure, the suspension oil cylinder 3 adopted by most dump truck vehicles is in the form of the upper hinge lug and the lower hinge lug 6, the two ends of the oil cylinder are well stressed, but due to the fact that the installation distance is long, the upper hinge lugs have to be arranged on the side surfaces of the frame 1 for lowering the center of gravity of the whole truck, the upper hinge lugs and the frame 1 are connected to form a long force arm, the frame 1 can be subjected to a large torsional moment when being subjected to suspension stress, the occurrence of the moment can cause the service life of the frame 1 to be shortened, the longitudinal space occupied by the hinge lugs is large, the stroke of the suspension oil cylinder 3 is limited, and the influence on the passing and the shock absorption of the whole truck cannot be improved, and therefore the rear axle hydro-pneumatic suspension is in a single-hinge lug structure.
Further preferably, the suspension cylinder 3 comprises a cylinder barrel 301, a piston 302 and a piston 302 rod;
the cylinder barrel 301 is symmetrically arranged on two sides of the mounting plate 2, and damping holes are formed in the cylinder barrel 301;
the piston 302 is fixedly arranged in the cylinder barrel 301;
the piston 302 rod is movably connected inside the piston 302.
Specifically, the inner cavity of the rod cylinder 301 of the piston 302 and the annular cavity 9 are filled with hydraulic oil, and pure nitrogen or an external energy accumulator is filled in the oil cylinder. When the vehicle runs on the road surface, the undulation of the road surface is transferred to the hydro-pneumatic suspension through the wheels, the piston 302 and the piston 302 do reciprocating motion in the cylinder 301
Further preferably, the limiting component 4 comprises a pin collar 402 base 401, a pin collar 402 and a limiting ring 403;
the pin collar 402 base 401 is fixedly arranged on the periphery of the cylinder barrel 301;
the pin collar 402 is mounted on the base 401 of the pin collar 402, and the inner surface of the pin collar 402 and the outer surface of the base 401 of the pin collar 402 are spherical surfaces which are matched with each other;
the retainer ring 403 is mounted on the cylinder barrel 301, the retainer ring 403 is located above the pin collar 402, and an annular groove is formed between the retainer ring 403 and the pin collar 402.
Specifically, the inner surface of the pin collar 402 and the outer surface of the base 401 of the pin collar 402 are a matched spherical surface, so that the suspension cylinder 3 can rotate within a limited angle, 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 inner surface of the pin collar 402 and the outer surface of the base 401 of the pin collar 402 are a matched spherical surface, so that the suspension cylinder 3 can rotate within a limited angle, 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 and used for adjusting the speed of oil.
Specifically, when the air pressure in the air cavity is reduced to balance the external load, the piston 302 stops moving the piston 302. During the stretching process, the one-way valve 7 is closed, the flow speed of the oil flowing through the damping holes is accelerated, and the damping force is increased so as to quickly attenuate vibration.
Further preferably, an inner cavity of the cylinder 301 is arranged in the cylinder 301.
Specifically, the inner cavity of the cylinder 301 is used for facilitating the movement of the piston 302 rod.
Further preferably, an annular chamber 9 is formed between the cylinder barrel 301 and the piston 302 rod.
Specifically, the ring chamber 9 is used for buffering when the piston 302 moves.
Further preferably, the cylinder 301 comprises a guiding sleeve 10, and the guiding sleeve 10 is disposed at an outlet of the cylinder 301 for guiding the piston 302.
In particular, the guide sleeve 10 is used to guide the piston 302 rod.
It is further preferred that the lower hinge lug 6 is fixedly arranged at the bottom of the rod of the piston 302.
Specifically, the suspension oil cylinder 3 adopted by most dumper vehicles is in an upper hinge lug and lower hinge lug 6 form, the two ends of the oil cylinder are well stressed, but due to the fact that the installation distance is long, a plurality of frames 1 have to arrange the upper hinge lugs on the side faces of the frames 1 in order to lower the center of gravity of the whole vehicle, the upper hinge lugs and the frames 1 form a long force arm at the connecting positions, the frames 1 can be subjected to a large torsion moment when being suspended and stressed, the occurrence of the moment can cause the service life of the frames 1 to be reduced and large longitudinal space occupied by the hinge lugs, the stroke of the suspension oil cylinder 3 is limited, and the whole vehicle passing and the shock absorption cannot be improved.
Further preferably, the cylinder 301 is installed between the lower beam 101 and the mounting plate 2 through a pin collar 402, the mounting plate 2 is provided with a plurality of bolts 11, and the mounting plate 2 is coupled to 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 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 is characterized in that the inner cavity of the piston rod cylinder barrel and the annular cavity are filled with hydraulic oil, and pure nitrogen or an external energy accumulator is filled in the oil cylinder. When the vehicle runs on the road, the undulation of the road is transferred to the hydro-pneumatic suspension through the wheels, and the piston rod and the like do reciprocating motion in the cylinder barrel. The load is increased, and when the hydro-pneumatic suspension is in a compression stroke, the piston rod piston is pressed into the cylinder barrel. 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 check valve and the damping hole, and meanwhile, when the air pressure is increased to balance an external load, the piston rod piston stops moving. The check valve and the damping hole are opened simultaneously during the compression stroke, the oil flow has large flow area, the flow rate is slow, the generated resistance is small, the upward movement resistance of the piston rod piston is mainly the elastic force generated by compressed gas to ease the impact, the load is reduced, when the oil-gas suspension is in the extension stroke, the piston rod piston extends out of the cylinder barrel, the air pressure of the big cavity is reduced and the volume is increased, the oil in the annular cavity flows into the big cavity through the damping hole, and when the air pressure in the air cavity is reduced to be balanced with the external load, the piston rod piston stops moving. During the stretching process, the one-way valve is closed, the flow rate of oil flowing through the damping holes is accelerated, the damping force is increased, vibration is attenuated rapidly, the inner surface of the pin shaft ring and the outer surface of the base of the pin shaft ring are matched spherical surfaces, the suspension oil cylinder can rotate within a limited angle, 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 to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms 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 utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (10)
1. The utility model provides a rear axle hydro-pneumatic suspension for mining dump truck which characterized in that includes:
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 oil cylinder;
and the lower hinge lug is arranged on the suspension oil cylinder.
2. The rear axle hydro-pneumatic suspension for the mining dump truck according to claim 1,
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.
3. The rear axle hydro-pneumatic suspension for the mining dump truck according to claim 2,
the limiting component comprises a pin shaft ring base, a pin shaft ring and a limiting ring;
the pin roll ring base is fixedly arranged on the periphery of the cylinder barrel;
the pin collar is arranged on the pin collar base, and the inner surface of the pin collar and the outer surface of the pin collar base are spherical surfaces which are matched with each other;
the limiting ring is installed on the cylinder barrel and located above the pin shaft collar, and an annular groove is formed between the limiting ring and the pin shaft collar.
4. The rear axle hydro-pneumatic suspension for the mining dump truck according to claim 3,
the buffer member includes a buffer ring;
the buffer ring is sleeved in the annular groove.
5. The rear axle hydro-pneumatic suspension for the mining dump truck according to claim 4, characterized by further comprising a check valve;
the check valve is installed on the cylinder barrel and used for adjusting the speed of oil.
6. The rear axle hydro-pneumatic suspension for the mining dump truck according to claim 2,
a cylinder barrel inner cavity is formed in the cylinder barrel.
7. The rear axle hydro-pneumatic suspension for the mining dump truck according to claim 2,
an annular cavity is formed between the cylinder barrel and the piston rod.
8. The rear axle hydro-pneumatic suspension for the mining dump truck according to any one of claims 2 to 7,
the cylinder barrel comprises a guide sleeve, and the guide sleeve is arranged at an outlet of the cylinder barrel and used for guiding the piston rod.
9. The rear axle hydro-pneumatic suspension for the mining dump truck according to claim 2,
the lower hinge lug is fixedly arranged at the bottom of the piston rod.
10. The rear axle hydro-pneumatic suspension for the mining dump truck according to any one of claims 2 to 7,
the cylinder barrel is installed between the lower cross beam and the installation plate through a pin shaft ring, a plurality of bolts are arranged on the installation plate, and the installation plate is connected with the lower cross beam through the bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210942740.1A CN115143221A (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 CN115143221A (en) | 2022-08-08 | 2022-08-08 | Rear axle hydro-pneumatic suspension for mining dump truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115143221A true CN115143221A (en) | 2022-10-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210942740.1A Pending CN115143221A (en) | 2022-08-08 | 2022-08-08 | Rear axle hydro-pneumatic suspension for mining dump truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115143221A (en) |
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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 |
-
2022
- 2022-08-08 CN CN202210942740.1A patent/CN115143221A/en active Pending
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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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