CN105352744A - Automobile suspension rack detection table and detection method - Google Patents
Automobile suspension rack detection table and detection method Download PDFInfo
- Publication number
- CN105352744A CN105352744A CN201510866654.7A CN201510866654A CN105352744A CN 105352744 A CN105352744 A CN 105352744A CN 201510866654 A CN201510866654 A CN 201510866654A CN 105352744 A CN105352744 A CN 105352744A
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- wheel
- automobile
- table top
- motor
- detection
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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
Abstract
The invention discloses an automobile suspension rack detection table and a detection method. The automobile suspension rack detection table comprises an energy storage flywheel, a motor, an eccentric gear, an exciting spring, a table top, a measurement device and a detection control table; the working theory is that the motor, the eccentric gear, the energy storage flywheel and the exciting spring assembly constitute an exciter which enables the detection table top and a detected automobile suspension rack system to generate resonance; the resonance frequency, the amplitude and the output vibration waveform curve are measured; the data and the waveform are recorded and then system processing and data analysis and processing are performed; and the working performance of the suspension rack system is evaluated. The detection method disclosed by the invention comprises steps of driving a detected automobile into the suspension rack detection table, starting up the detection table, enabling the exciter to force automobile the suspension rack to vibrate, recording an attenuation vibration curve, measuring a dynamic wheel load in the process of resonance, calculating and displaying an absorption rate of an automobile wheel (namely wheel ground adhesion index), and comparing the absorption rate of the automobile wheel with the standard and making a determination. The test result of the invention is direct, accurate, and highly reliable, and, compared with the automobile road test, the invention is short in detection cycle and high in efficiency.
Description
Technical field
The present invention relates to field of automobile, particularly relate to a kind of platform for testing suspension of car and detection method thereof.
Background technology
Automotive suspension is one of important assembly of automobile, and it flexibly couples together vehicle frame (or vehicle body) and axletree (or wheel).Its main task transmits all force and moments acted between wheel and vehicle frame (or vehicle body); Relax the shock load that vehicle frame (or vehicle body) is passed on road surface, the vibration of the bearing system caused thus of decaying, ensures ride of vehicle; Ensure that wheel has desirable kinetic characteristic when Uneven road and load change, ensure the operational stability of automobile, make automobile obtain ability of running at high speed.Therefore, the technology status of suspension and serviceability, to Integral automobile performance important.Suspension system is usually by flexible member, and guide piece, vibration damper, cushion the part compositions such as fast and stabilizer antiroll bar, suspension fault will directly affect ride of vehicle, control stability and driving safety.So the serviceability how detecting automobile suspension system is very important, be also those skilled in the art's problems in the urgent need to address.
Summary of the invention
For the problems referred to above, the present invention proposes a kind of platform for testing suspension of car and detection method thereof, can simulated automotive condition of work, detects technology status and the serviceability of automobile suspension system, to solve the deficiencies in the prior art.
The technical solution used in the present invention is:
A kind of platform for testing suspension of car, comprises energy-storing flywheel, motor, eccentric wheel, exciting vibration spring, table top, measurement mechanism and testing console.Wherein, energy-storing flywheel is arranged on motor rear end and is fixedly connected with motor shaft, and eccentric wheel is arranged on motor front end and is fixedly connected with motor shaft; Described exciting vibration spring is arranged on eccentric wheel, and eccentric outer rim is close in its lower surface; Described table top is arranged on exciting vibration spring, and with exciting vibration spring plane contact; Described measurement mechanism comprises inductor and measuring instrument, is arranged on table top, and connects testing console, and described testing console comprises computer system, sensor, A/D converter and control software design;
Described energy-storing flywheel 1, motor 2, eccentric wheel 3, exciting vibration spring 4, table top 5, measurement mechanism 6 are two covers, and are symmetrical set.
Use the detection method of this platform for testing suspension of car, comprise following methods step:
(1) check doughnut specification, air pressure should conform with the regulations value, tested vehicle quality does not exceed monitor station rated load;
(2) vehicle is reached Suspension detecting platform, make tire be positioned at the middle position of table top, driver, from car, makes vehicle unloaded;
(3) start detection platform, makes vibrator force automobile hanging to produce vibration;
(3) vibration frequency is increased to the resonant frequency exceeding vibration;
(4) after exceeding resonance point, exciting source is turned off, vibration frequency is reduced to and passes through resonance point gradually;
(5) record damped vibration curve, measure dynamic wheel load when resonating.
(6) calculate and show the difference that the number percent of dynamic wheel load and static wheel load and coaxial left-right thereof take turns number percent.
(7) judge by standard:
By the regulation of GB18565-2001, the wheel absorptivity (wheel ground adhesion index) during tested automobile resonance should be not less than 40%, and the difference of coaxial left-right wheel absorptivity must not be greater than 15%.
If meet above-mentioned condition, then it is qualified to be judged as; Otherwise, be judged as defective.
Principle of work of the present invention is: consist of vibrator by motor 2, eccentric wheel 3, energy-storing flywheel 1 and exciting vibration spring 4, forces monitor station table top 5 and upper tested automobile suspension system thereof to produce vibration.After the start several seconds, disconnect motor power, produce scanning frequency excitation by energy-storing flywheel 1, thus make table top-automotive system produce resonance.While disconnection drive motor power supply, start sampling and measuring device, measure this vibration frequency, amplitude, output vibrational waveform curve, record data and waveform, then carry out system process and Data Analysis Services, just can evaluate the serviceability judging suspension system.
Beneficial effect of the present invention is: can not only realize the performance test to suspension system and the control to test process, and the data analysis that can gather Suspension detecting platform and process, and testing result is shown and prints, judgement is analyzed for people, its test result is intuitively accurate, and reliability is high, compares motor road test, its sense cycle is short, and efficiency is high.
Accompanying drawing explanation
Fig. 1 is Cleaning Principle schematic diagram of the present invention
Fig. 2 is structural representation of the present invention
Fig. 3 is the damped vibration curve map that the present invention measures
Embodiment
Below in conjunction with drawings and Examples, technical scheme of the present invention is described further.
A kind of platform for testing suspension of car, see accompanying drawing 2, comprises energy-storing flywheel 1, motor 2, eccentric wheel 3, exciting vibration spring 4, table top 5, measurement mechanism 6 and testing console (omitting in figure).Wherein, energy-storing flywheel 1 is arranged on motor 2 rear end and is fixedly connected with motor shaft, and eccentric wheel 3 is arranged on motor 2 front end and is fixedly connected with motor shaft; Described exciting vibration spring 4 is arranged on eccentric wheel 3, and the outer rim of eccentric wheel 3 is close in its lower surface; Described table top 5 is arranged on exciting vibration spring 4, and with exciting vibration spring 4 plane contact; Described measurement mechanism 6 comprises inductor and measuring instrument, is arranged on table top 5, and is connected with testing console, and described testing console comprises computer system, sensor, A/D converter and control software design;
Described energy-storing flywheel 1, motor 2, eccentric wheel 3, exciting vibration spring 4, table top 5, measurement mechanism 6 are two covers, and are symmetrical set.During test, the forward and backward bridge of vehicle detects respectively, should be positioned on monitor station table top 5 with bridge both sides tire simultaneously.
Principle of work of the present invention is: consist of vibrator by motor 2, eccentric wheel 3, energy-storing flywheel 1 and exciting vibration spring 4, forces monitor station table top 5 and upper tested automobile suspension system thereof to produce vibration.After the start several seconds, disconnect motor power, produce scanning frequency excitation by energy-storing flywheel 1, thus make table top-automotive system produce resonance.While disconnection drive motor power supply, start sampling and measuring device, record data and waveform, then carry out Data Analysis Services, just can evaluate the serviceability judging suspension system.
Use the method for testing of this platform for testing suspension of car, it is characterized in that comprising following methods step:
(1) check doughnut specification, air pressure should conform with the regulations value, tested vehicle quality does not exceed monitor station rated load;
(2) vehicle is reached Suspension detecting platform, make tire be positioned at the middle position of table top, driver, from car, makes vehicle unloaded;
(3) start detection platform, makes vibrator force automobile hanging to produce vibration;
(3) vibration frequency is increased to the resonant frequency exceeding vibration;
(4) after exceeding resonance point, exciting source is turned off, vibration frequency is reduced to and passes through resonance point gradually;
(5) record damped vibration curve, measure dynamic wheel load when resonating.
(6) calculate and show the difference that the number percent of dynamic wheel load and static wheel load and coaxial left-right thereof take turns number percent.
(7) judge by standard:
By the regulation of GB18565-2001, the wheel absorptivity (wheel ground adhesion index) during tested automobile resonance should be not less than 40%, and the difference of coaxial left-right wheel absorptivity must not be greater than 15%.
If meet above-mentioned condition, then it is qualified to be judged as; Otherwise, be judged as defective.
In above-mentioned detection method, in running car, the minimum ability that wheel contacts with road surface is guaranteed because wheel absorptivity (wheel ground adhesion index) indicates suspension system, therefore, wheel absorptivity (wheel ground adhesion index) can characterize the serviceability of suspension system.In running car, the ground connection sex index of all wheels is different, this is because each wheel suspension system serviceability differs, respectively takes turns bearing load and differ, respectively take turns that the not first-class reason of air pressure causes.If on monitor station, people makes each load of bearing of taking turns consistent with tire pressure, and so, wheel ground adhesion index just depends mainly on the serviceability of draft hitch.Therefore, the serviceability of wheel ground adhesion index assessment draft hitch can be used completely.
Claims (4)
1. a platform for testing suspension of car, it is characterized in that: comprise energy-storing flywheel (1), motor (2), eccentric wheel (3), exciting vibration spring (4), table top (5), measurement mechanism (6) and testing console, described energy-storing flywheel (1) is arranged on motor (2) rear end and is fixedly connected with motor shaft, and eccentric wheel (3) is arranged on motor (2) front end and is fixedly connected with motor shaft; Described exciting vibration spring (4) is arranged on eccentric wheel (3), and the outer rim of eccentric wheel (3) is close in its lower surface; Described table top (5) is arranged on exciting vibration spring (4), and with exciting vibration spring (4) plane contact; Described measurement mechanism (6) comprises inductor and measuring instrument, is arranged on table top (5).
2. a kind of platform for testing suspension of car according to claim 1, it is characterized in that: described energy-storing flywheel (1), motor (2), eccentric wheel (3), exciting vibration spring (4), table top (5), measurement mechanism (6) for being two covers, and are symmetrical set.
3. a kind of platform for testing suspension of car according to claim 1, is characterized in that: described measurement mechanism (6) is connected with testing console.
4. a detection method for platform for testing suspension of car, is characterized in that: comprise following methods step:
(1) check doughnut specification, air pressure should conform with the regulations value, tested vehicle quality does not exceed monitor station rated load;
(2) sail vehicle into Suspension detecting platform, make tire be positioned at the middle position of table top, driver, from car, makes vehicle unloaded;
(3) start detection platform, makes vibrator force automobile hanging to produce vibration;
(3) vibration frequency is increased to the resonant frequency exceeding vibration;
(4) after exceeding resonance point, exciting source is turned off, vibration frequency is reduced to and passes through resonance point gradually;
(5) record damped vibration curve, measure dynamic wheel load when resonating.
(6) calculate and show the difference that the number percent of dynamic wheel load and static wheel load and coaxial left-right thereof take turns number percent.
(7) judge by standard:
By the regulation of GB18565-2001, the wheel absorptivity (wheel ground adhesion index) during tested automobile resonance should be not less than 40%, and the difference of coaxial left-right wheel absorptivity must not be greater than 15%.
If meet above-mentioned condition, then it is qualified to be judged as; Otherwise, be judged as defective.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510866654.7A CN105352744A (en) | 2015-12-01 | 2015-12-01 | Automobile suspension rack detection table and detection method |
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| CN201510866654.7A CN105352744A (en) | 2015-12-01 | 2015-12-01 | Automobile suspension rack detection table and detection method |
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| CN105352744A true CN105352744A (en) | 2016-02-24 |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107255512A (en) * | 2017-07-18 | 2017-10-17 | 攀枝花学院 | Detection method for verifying rod member resonant frequency |
| CN107966293A (en) * | 2018-01-10 | 2018-04-27 | 佛山职业技术学院 | A kind of axle fatigue test board |
| CN108269486A (en) * | 2018-03-23 | 2018-07-10 | 深圳科澳汽车科技有限公司 | A kind of dynamic suspension platform and its method of work |
| CN108827647A (en) * | 2018-03-30 | 2018-11-16 | 重庆长安汽车股份有限公司 | A kind of complete vehicle test method for verifying damper durability |
| CN109632348A (en) * | 2018-12-27 | 2019-04-16 | 大乘汽车有限公司 | Damper abnormal sound test-bed |
| CN109754487A (en) * | 2017-11-03 | 2019-05-14 | 株洲中车时代电气股份有限公司 | The train homogeneity of product method of inspection, system, equipment and readable storage medium storing program for executing |
| CN111307474A (en) * | 2020-03-11 | 2020-06-19 | 清友(苏州)汽车技术有限公司 | Method for testing vibration isolation performance of automotive suspension spring gasket based on MTS loading device |
| CN112710485A (en) * | 2020-12-18 | 2021-04-27 | 上海煜和机动车检测有限公司 | Motor vehicle performance detection system |
| CN112996705A (en) * | 2018-11-28 | 2021-06-18 | 日立安斯泰莫株式会社 | Vibration damper for railway vehicle |
| CN113049277A (en) * | 2021-03-08 | 2021-06-29 | 中车长春轨道客车股份有限公司 | Testing device for wheel rail system |
| CN115372025A (en) * | 2022-09-02 | 2022-11-22 | 合肥工业大学 | Automatic test platform and method for vehicle suspension system performance |
| CN115791049A (en) * | 2023-02-17 | 2023-03-14 | 江苏永成汽车零部件股份有限公司 | Automobile side wall vibration test device |
-
2015
- 2015-12-01 CN CN201510866654.7A patent/CN105352744A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107255512A (en) * | 2017-07-18 | 2017-10-17 | 攀枝花学院 | Detection method for verifying rod member resonant frequency |
| CN109754487A (en) * | 2017-11-03 | 2019-05-14 | 株洲中车时代电气股份有限公司 | The train homogeneity of product method of inspection, system, equipment and readable storage medium storing program for executing |
| CN107966293A (en) * | 2018-01-10 | 2018-04-27 | 佛山职业技术学院 | A kind of axle fatigue test board |
| CN108269486A (en) * | 2018-03-23 | 2018-07-10 | 深圳科澳汽车科技有限公司 | A kind of dynamic suspension platform and its method of work |
| CN108827647A (en) * | 2018-03-30 | 2018-11-16 | 重庆长安汽车股份有限公司 | A kind of complete vehicle test method for verifying damper durability |
| CN112996705A (en) * | 2018-11-28 | 2021-06-18 | 日立安斯泰莫株式会社 | Vibration damper for railway vehicle |
| CN109632348A (en) * | 2018-12-27 | 2019-04-16 | 大乘汽车有限公司 | Damper abnormal sound test-bed |
| CN111307474A (en) * | 2020-03-11 | 2020-06-19 | 清友(苏州)汽车技术有限公司 | Method for testing vibration isolation performance of automotive suspension spring gasket based on MTS loading device |
| CN112710485A (en) * | 2020-12-18 | 2021-04-27 | 上海煜和机动车检测有限公司 | Motor vehicle performance detection system |
| CN113049277A (en) * | 2021-03-08 | 2021-06-29 | 中车长春轨道客车股份有限公司 | Testing device for wheel rail system |
| CN115372025A (en) * | 2022-09-02 | 2022-11-22 | 合肥工业大学 | Automatic test platform and method for vehicle suspension system performance |
| CN115372025B (en) * | 2022-09-02 | 2024-04-12 | 合肥工业大学 | Automatic test platform and method for vehicle suspension system performance |
| CN115791049A (en) * | 2023-02-17 | 2023-03-14 | 江苏永成汽车零部件股份有限公司 | Automobile side wall vibration test device |
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Application publication date: 20160224 |