CN105865812B - A kind of test-bed and its test method for Air Suspension for Commercial Vehicles system - Google Patents
A kind of test-bed and its test method for Air Suspension for Commercial Vehicles system Download PDFInfo
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- CN105865812B CN105865812B CN201610401796.0A CN201610401796A CN105865812B CN 105865812 B CN105865812 B CN 105865812B CN 201610401796 A CN201610401796 A CN 201610401796A CN 105865812 B CN105865812 B CN 105865812B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
- G01M17/04—Suspension or damping
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0075—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by means of external apparatus, e.g. test benches or portable test systems
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Abstract
The invention provides a kind of test-bed and its test method for Air Suspension for Commercial Vehicles system, various fixed supports, simulation vehicle bridge and four servo hydraulic systems for applying load to Air Suspension for Commercial Vehicles system that test-bed mainly includes being used to fix Air Suspension for Commercial Vehicles system.Because propons is different with bridge air suspension system architecture, test-bed is divided into front overhang test-bed and rear overhang test-bed.At the trial, four servo hydraulic systems apply vertical, laterally and longitudinally three directions load to Air Suspension for Commercial Vehicles system, two of which servo hydraulic system provides vertical direction load, the operating mode stressing conditions such as vertical impact, inclination, braking and brakeing during cornereing of the Air Suspension for Commercial Vehicles system during actual road test can be simulated, for testing fatigue properties of the airsuspension system under various operating modes, reliable research technique is provided for designing and developing for airsuspension system and verification experimental verification.
Description
Technical field
The present invention relates to automobile making detection technique field, belong to the rigidity test and fatigue of Air Suspension for Commercial Vehicles system
Performance test, the especially a kind of test-bed and its test method of automobile commercial car airsuspension system.
Background technology
Due to the compressibility of gas in air spring, not only make airsuspension system be readily available it is excellent it is non-linear just
Characteristic is spent, and bodywork height can be adjusted as needed, so its application in vehicle is more and more extensive.Suspension system is
The attachment means of all power transmissions or torque between the vehicle frame and vehicle bridge or wheel of automobile, its fatigue behaviour is to vehicle security energy
It is most important.It is however, domestic at present also tired to airsuspension system progress without ready-made test-bed, test method and standard
The fatigue test method and standard of the part such as labor performance test, only air spring, stabiliser bar and distance rod.Therefore, air hangs
The fatigue behaviour of frame system is typically detected by proving ground test.During proving ground test, some portion in airsuspension system
When early fracture failure occurs in part, in general designer according to road test result, can only improve the fatigue properties of problem component, so
After continue proving ground test.Not only experimentation cost is high for this method, cycle length, and is unfavorable for airsuspension system entirety fatigability
The improvement of energy.
The content of the invention
In view of the above-mentioned problems, the present invention proposes a kind of test-bed for Air Suspension for Commercial Vehicles system, pass through control
Vertically, laterally and longitudinally the load output in three directions, simulation Air Suspension for Commercial Vehicles system are perpendicular during actual road test
To the operating mode stressing conditions such as impact, inclination, braking and brakeing during cornereing, the rigidity in three directions of detection Air Suspension for Commercial Vehicles system
Performance and fatigue behaviour.
The technical solution adopted by the present invention is：A kind of test-bed for Air Suspension for Commercial Vehicles system, test-bed
It is divided into propons airsuspension system test-bed 300 and bridge air suspension system test stand 500, it is characterised in that：Propons
Propons airsuspension system 200 is inverted in airsuspension system test-bed 300, in propons airsuspension system 200 before
Hanging gas spring 201 is upside down on front overhang air spring fixed support 304, corresponding in front overhang air spring fixed support 304
Side is provided with front overhang upper thrust rod fixed support 302, and front overhang upper thrust rod fixed support 302 is fixed provided with front overhang lower thrust rod
Support 301；Inverted front overhang air spring 201 is provided with inverted front overhang simulation vehicle bridge 303 above, and front overhang simulation vehicle bridge 303 is logical
Front overhang lower thrust rod is crossed to be fixed on front overhang lower thrust rod fixed support 301；
Both ends in front overhang simulation vehicle bridge 303 are provided with vertical load servo hydraulic system 1 upwards and vertical load is watched
Hydraulic system 2 102 is taken, the middle part of front overhang simulation vehicle bridge 303 is longitudinally provided with longitudinal loading servo hydraulic system 103, from front overhang mould
The side for intending the one end of vehicle bridge 303 is transversely provided with transverse load servo hydraulic system 104；
Bridge air suspension system 400 is inverted in bridge air suspension system test stand 500, bridge air suspension system
Four back axle air springs 401 in system 400, which correspond to, is arranged on rear overhang air spring fixed support 1 and rear overhang air spring
On fixed support 2 504, inverted bridge air suspension system 400 is provided with inverted rear overhang simulation vehicle bridge 503, rear overhang mould above
Intend vehicle bridge 503 to be fixed on rear overhang distance rod fixed support 501 by rear overhang distance rod 404, wherein rear overhang distance rod fixes branch
Frame 501 is arranged on rear overhang air spring fixed support 1；Rear overhang simulates the rear overhang stabiliser bar fixed support of vehicle bridge 503
505 are fixed between rear overhang air spring fixed support 2 504；
Both ends in rear overhang simulation vehicle bridge 503 are provided with vertical load servo hydraulic system 1 upwards and vertical load is watched
Hydraulic system 2 102 is taken, the middle part of rear overhang simulation vehicle bridge 503 is longitudinally provided with longitudinal loading servo hydraulic system 103, from rear overhang mould
The side for intending the one end of vehicle bridge 503 is transversely provided with transverse load servo hydraulic system 104.
A kind of test method for Air Suspension for Commercial Vehicles system test stand, it is characterised in that：
The test method is divided into two kinds：
Method one：Suitable for the suspension system of no road test load spectrum signal：By vertical load servo hydraulic system 1
With vertical load servo hydraulic system 2 102, longitudinal loading servo hydraulic system 103, transverse load servo hydraulic system 104 3
Direction CYCLIC LOADING, loading interval 50,000 times,
Wherein vertical load load mode is that maximum is 2.5 times of fully loaded load, and 0.5 times of fully loaded load of minimum load is just
String wave load, loading frequency 0.5HZ；
It is 0.8 times of fully loaded load that longitudinal direction, which is loaded as maximum, the sinusoidal wave load of 0.4 times of fully loaded load of minimum load, is added
Carrier frequency rate 0.5HZ, ensure that air bag pressure reduction amount is no more than 0.02MP during experiment；
Horizontal load mode is that simulation vehicle bridge upper left side and the wheel position on right side are loaded, and keeps left side wheel to be in full
When carrying load position, right side wheels is loaded into buffer stopper position, when loading next time, keep right side wheels to be in fully loaded and carry
Lotus position, left side wheel is set to be loaded into buffer stopper position, the load ratio cycle on left and right wheelses alternately changes, loading frequency
0.5HZ；
Method two：Airsuspension system suitable for obtaining road test load spectrum signal：In the reality of complete vehicle test field collection
Pumping signal carries out signal transacting, obtains the road test random signal spectrum of Air Suspension for Commercial Vehicles system, then utilizes control system
After-treatment is carried out to the random signal spectrum of acquisition, obtains vertical load servo hydraulic system 1 and vertical load servo-fluid
Pressure system 2 102, longitudinal loading servo hydraulic system 103, transverse load servo hydraulic system 104 totally four servo hydraulic systems
Drive signal spectrum, carry out fatigue property test.
Beneficial effect：
Bench simulation vehicle bridge and four servos for applying load to Air Suspension for Commercial Vehicles system are tested in the present invention
Hydraulic system and its test method.By controlling four servo hydraulic systems, output is vertical, three directions of vertical and horizontal carry
Lotus, the load working condition of Air Suspension for Commercial Vehicles system during simulated automotive travels, the rigidity and fatigability in three directions of progress
It can test, the structure for airsuspension system, which is improved, in time provides reliable test data.
Brief description of the drawings
Fig. 1 is the commercial front axle airsuspension system of the present invention and its test-bed assembly diagram.
Fig. 2 is commercial car bridge air suspension system and its test-bed assembly diagram of the present invention.
Fig. 3 is the structural representation that the commercial front axle airsuspension system of the present invention is normally placed.
Fig. 4 is the structural representation that commercial car bridge air suspension system of the present invention is normally placed.
Fig. 5 is the schematic diagram after the commercial front axle airsuspension system of the present invention is inverted.
Fig. 6 is the schematic diagram after the commercial front axle airsuspension system of the present invention is inverted.
In figure
101- vertical loads servo hydraulic system one, 102- vertical loads servo hydraulic system two, 103- longitudinal loadings are watched
Take hydraulic system, 104- transverse load servo hydraulic systems；
200- propons airsuspension systems, 201- front overhang air springs, 202- front overhang stabiliser bars, 203- front overhang distance rods；
300- propons airsuspension system test-beds, 301- front overhang lower thrust rod fixed supports, 302- front overhang lifting force
Bar fixed support, 303- front overhang simulation vehicle bridge, 304- front overhang air spring fixed supports, 305- front overhang stabiliser bar fixed supports；
400- bridge air suspension systems, 401- rear overhang air springs, 402- rear overhang C-type beams, 403- rear overhang stabiliser bars,
404- rear overhang distance rods；
500- bridge air suspension system test stands, 501- rear overhang distance rod fixed supports, 502- rear overhang air springs
Fixed support one, 503- rear overhangs simulation vehicle bridge, 504- rear overhang air springs fixed support two, 505- rear overhangs stabiliser bar fix branch
Frame.
Embodiment
The present invention is described in further detail with reference to embodiment accompanying drawing, but they are not formed to the present invention's
Limit, while by explanation, designer can be made more to be aware and understood invention.
Test-bed is divided into propons airsuspension system test-bed 300 and bridge air suspension system test stand 500.
Test-bed mainly includes being used to fix commercial car air propons airsuspension system 200 and bridge air suspension system
Fixed support, simulation vehicle bridge and the servo hydraulic system for applying load to Air Suspension for Commercial Vehicles system of system 400.
Fixed commercial car air propons airsuspension system 200 is mainly by front overhang air spring 201, front overhang stabiliser bar 202
Formed with front overhang distance rod 203,
Propons airsuspension system test-bed 300 is mainly by front overhang lower thrust rod fixed support 301, front overhang upper thrust rod
305 groups of fixed support 302, front overhang simulation vehicle bridge 303, front overhang air spring fixed support 304 and front overhang stabiliser bar fixed support
Into.
Bridge air suspension system 400 is mainly by rear overhang air spring 401, rear overhang C-type beam 402, the and of rear overhang stabiliser bar 403
Rear overhang distance rod 404 forms.
Bridge air suspension system test stand 500 is mainly by rear overhang distance rod fixed support 501, rear overhang air spring one
Fixed support 502, rear overhang simulation vehicle bridge 503, the fixed support 504 of rear overhang air spring two and rear overhang stabiliser bar fixed support 505
Composition.
A kind of test-bed for Air Suspension for Commercial Vehicles system, test-bed are divided into the experiment of propons airsuspension system
Stand 300 and bridge air suspension system test stand 500, by propons air in propons airsuspension system test-bed 300
Suspension system 200 is inverted, and the front overhang air spring 201 in propons airsuspension system 200 is upside down in front overhang air spring and fixed
It is corresponding to be provided with front overhang upper thrust rod fixed support 302, front overhang in the side of front overhang air spring fixed support 304 on support 304
Upper thrust rod fixed support 302 is provided with front overhang lower thrust rod fixed support 301；Inverted front overhang air spring 201 is set above
There is inverted front overhang simulation vehicle bridge 303, front overhang simulation vehicle bridge 303 is fixed on front overhang lower thrust rod by front overhang lower thrust rod and fixed
On support 301；
Both ends in front overhang simulation vehicle bridge 303 are provided with vertical load servo hydraulic system 1 upwards and vertical load is watched
Hydraulic system 2 102 is taken, the middle part of front overhang simulation vehicle bridge 303 is longitudinally provided with longitudinal loading servo hydraulic system 103, from front overhang mould
The side for intending the one end of vehicle bridge 303 is transversely provided with transverse load servo hydraulic system 104；
Bridge air suspension system 400 is inverted in bridge air suspension system test stand 500, bridge air suspension system
Four back axle air springs 401 in system 400, which correspond to, is arranged on rear overhang air spring fixed support 1 and rear overhang air spring
On fixed support 2 504, inverted bridge air suspension system 400 is provided with inverted rear overhang simulation vehicle bridge 503, rear overhang mould above
Intend vehicle bridge 503 to be fixed on rear overhang distance rod fixed support 501 by rear overhang distance rod 404, wherein rear overhang distance rod fixes branch
Frame 501 is arranged on rear overhang air spring fixed support 1；Rear overhang simulates the rear overhang stabiliser bar fixed support of vehicle bridge 503
505 are fixed between rear overhang air spring fixed support 2 504；
Both ends in rear overhang simulation vehicle bridge 503 are provided with vertical load servo hydraulic system 1 upwards and vertical load is watched
Hydraulic system 2 102 is taken, the middle part of rear overhang simulation vehicle bridge 503 is longitudinally provided with longitudinal loading servo hydraulic system 103, from rear overhang mould
The side for intending the one end of vehicle bridge 503 is transversely provided with transverse load servo hydraulic system 104.
A kind of test method for Air Suspension for Commercial Vehicles system test stand,
The test method is divided into two kinds：
Method one：Suitable for the suspension system of no road test load spectrum signal：By vertical load servo hydraulic system 1
With vertical load servo hydraulic system 2 102, longitudinal loading servo hydraulic system 103, transverse load servo hydraulic system 104 3
Direction CYCLIC LOADING, loading interval 50,000 times,
Wherein vertical load load mode is that maximum is 2.5 times of fully loaded load, and 0.5 times of fully loaded load of minimum load is just
String wave load, loading frequency 0.5HZ；
It is 0.8 times of fully loaded load that longitudinal direction, which is loaded as maximum, the sinusoidal wave load of 0.4 times of fully loaded load of minimum load, is added
Carrier frequency rate 0.5HZ, ensure that air bag pressure reduction amount is no more than 0.02MP during experiment；
Horizontal load mode is that simulation vehicle bridge upper left side and the wheel position on right side are loaded, and keeps left side wheel to be in full
When carrying load position, right side wheels is loaded into buffer stopper position, when loading next time, keep right side wheels to be in fully loaded and carry
Lotus position, left side wheel is set to be loaded into buffer stopper position, the load ratio cycle on left and right wheelses alternately changes, loading frequency
0.5HZ；
Method two：Airsuspension system suitable for obtaining road test load spectrum signal：In the reality of complete vehicle test field collection
Pumping signal carries out signal transacting, obtains the road test random signal spectrum of Air Suspension for Commercial Vehicles system, then utilizes control system
After-treatment is carried out to the random signal spectrum of acquisition, obtains vertical load servo hydraulic system 1 and vertical load servo-fluid
Pressure system 2 102, longitudinal loading servo hydraulic system 103, transverse load servo hydraulic system 104 totally four servo hydraulic systems
Drive signal spectrum, carry out fatigue property test.
According to design requirement and actual entrucking state, after Air Suspension for Commercial Vehicles system is inverted, simulation vehicle bridge is fixed on
On suspension system fixed support；Then according to the requirement of load outbound course, by servo hydraulic system respectively with simulating vehicle bridge
Setting position connection.
The front overhang simulation vehicle bridge 303 and rear overhang simulation vehicle bridge 503 are used to connect propons airsuspension system 200 and back axle
Airsuspension system 400 and servo hydraulic system, and by the load transmission on servo hydraulic system to suspension system.Therefore, it is preceding
The position space coordinates being connected in outstanding simulation vehicle bridge 303 and rear overhang simulation vehicle bridge 503 with servo hydraulic system, is according to vehicle
The coordinate parameters of wheel and ground contact surface convert in actual moving process.
The suspension system be used for fix the air spring being connected in Air Suspension for Commercial Vehicles system with vehicle frame, stabiliser bar,
Distance rod and the grade structural member of rear overhang C-type beam 402, connected mode of the connected mode with air suspension on vehicle is consistent, ensures outstanding
The stationary state of frame system and actual entrucking state consistency.
It is perpendicular that the servo hydraulic system has vertical servo hydraulic system 1 and vertical servo hydraulic system 2 102 to provide
To load, a longitudinal Hydrauservo System 103 provides longitudinal loading, and a transverse hydraulic servo-drive system 104 provides horizontal load
Lotus.
Claims (2)
1. a kind of test-bed for Air Suspension for Commercial Vehicles system, test-bed is divided into propons airsuspension system testing stand
Frame（300）With bridge air suspension system test stand（500）, propons airsuspension system test-bed（300）It is middle by propons
Airsuspension system（200）It is inverted, propons airsuspension system（200）In front overhang air spring（201）It is hanging before being upside down in
Gas spring fixed support（304）On, it is corresponding in front overhang air spring fixed support（304）Side consolidate provided with front overhang upper thrust rod
Fixed rack（302）, front overhang upper thrust rod fixed support（302）It is provided with front overhang lower thrust rod fixed support（301）；Before inverted
Hanging gas spring（201）Inverted front overhang simulation vehicle bridge is provided with above（303）, front overhang simulation vehicle bridge（303）By being pushed away under front overhang
Power bar is fixed on front overhang lower thrust rod fixed support（301）On；
Front overhang simulates vehicle bridge（303）On both ends be provided with vertical load servo hydraulic system one upwards（101）Watched with vertical load
Take hydraulic system two（102）, front overhang simulation vehicle bridge（303）Middle part longitudinally be provided with longitudinal loading servo hydraulic system（103）, from
Front overhang simulates vehicle bridge（303）The side of one end is transversely provided with transverse load servo hydraulic system（104）；
Bridge air suspension system test stand（500）It is middle by bridge air suspension system（400）It is inverted, bridge air suspension system
System（400）In four back axle air springs（401）It is corresponding to be arranged on rear overhang air spring fixed support one（502）With it is rear hanging
Gas spring fixed support two（504）On, inverted bridge air suspension system（400）Inverted rear overhang simulation vehicle bridge is provided with above
（503）, rear overhang simulation vehicle bridge（503）Pass through rear overhang distance rod（404）It is fixed on rear overhang distance rod fixed support（501）On, its
Middle rear overhang distance rod fixed support（501）It is arranged on rear overhang air spring fixed support one（502）On；Rear overhang simulates vehicle bridge
（503）Rear overhang stabiliser bar fixed support（505）It is fixed on rear overhang air spring fixed support two（504）Between；
Rear overhang simulates vehicle bridge（503）On both ends be provided with vertical load servo hydraulic system one upwards（101）Watched with vertical load
Take hydraulic system two（102）, rear overhang simulation vehicle bridge（503）Middle part longitudinally be provided with longitudinal loading servo hydraulic system（103）, from
Rear overhang simulates vehicle bridge（503）The side of one end is transversely provided with transverse load servo hydraulic system（104）.
2. a kind of using the test method for being used for Air Suspension for Commercial Vehicles system test stand as claimed in claim 1, it is special
Sign is：
The test method is divided into two kinds：
Method one：Suitable for the suspension system of no road test load spectrum signal：By vertical load servo hydraulic system one（101）With
Vertical load servo hydraulic system two（102）, longitudinal loading servo hydraulic system（103）, transverse load servo hydraulic system
（104）Three direction CYCLIC LOADINGs, loading interval 50,000 times,
Wherein vertical load load mode is that maximum is 2.5 times of fully loaded load, the sine wave of 0.5 times of fully loaded load of minimum load
Load, loading frequency 0.5HZ；
It is 0.8 times of fully loaded load that longitudinal direction, which is loaded as maximum, and the sinusoidal wave load of 0.4 times of fully loaded load of minimum load, loading is frequently
Rate 0.5HZ, ensure that air bag pressure reduction amount is no more than 0.02MP during experiment；
Horizontal load mode is that simulation vehicle bridge upper left side and the wheel position on right side are loaded, and keeps left side wheel to be in fully loaded and carries
During lotus position, right side wheels is loaded into buffer stopper position, when loading next time, keep right side wheels to be in fully loaded load position
Put, left side wheel is loaded into buffer stopper position, the load ratio cycle on left and right wheelses alternately changes, loading frequency 0.5HZ；
Method two：Airsuspension system suitable for obtaining road test load spectrum signal：In the actual excitation of complete vehicle test field collection
Signal carries out signal transacting, the road test random signal spectrum of Air Suspension for Commercial Vehicles system is obtained, then using control system to obtaining
The random signal spectrum obtained carries out after-treatment, obtains vertical load servo hydraulic system one（101）With vertical load servo-hydraulic
System two（102）, longitudinal loading servo hydraulic system（103）, transverse load servo hydraulic system（104）Totally four servo-hydraulics
The drive signal spectrum of system, carries out fatigue property test.
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| CN106706348B (en) * | 2017-01-09 | 2023-04-11 | 西南交通大学 | Comprehensive performance test bed for suspension system |
| CN111122133A (en) * | 2018-11-05 | 2020-05-08 | 东风德纳车桥有限公司 | Air spring rigidity characteristic test device |
| CN111912594A (en) * | 2019-05-07 | 2020-11-10 | 浙江吉利控股集团有限公司 | Suspension system impact test bench and test method |
| CN111947946B (en) * | 2020-06-24 | 2022-06-28 | 东风汽车底盘系统有限公司 | Device for Z-shaped guide arm bench test and test method thereof |
| CN112067321B (en) * | 2020-09-22 | 2023-01-20 | 湖北三环锻造有限公司 | Steering knuckle durability test method |
| CN113466064B (en) * | 2021-05-25 | 2022-08-05 | 东风汽车底盘系统有限公司 | Bench test device of single trailing arm suspension assembly |
| CN115372027A (en) * | 2022-10-25 | 2022-11-22 | 北京理工大学前沿技术研究院 | Automobile electronic control suspension test system and method and storage medium |
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Effective date of registration: 20191203 Address after: 442000 No. 2, Guangdong Road, Shiyan, Hubei Patentee after: Dongfeng Automobile Chassis System Co., Ltd. Address before: 442000 Shiyan province Hubei City Ling Zhangwan District Road No. 15 Patentee before: Dongfeng Vehicle Suspension Spring Co., Ltd. |
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