CN104807635A - Testing system and method of portable main retarder - Google Patents
Testing system and method of portable main retarder Download PDFInfo
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- CN104807635A CN104807635A CN201510214534.9A CN201510214534A CN104807635A CN 104807635 A CN104807635 A CN 104807635A CN 201510214534 A CN201510214534 A CN 201510214534A CN 104807635 A CN104807635 A CN 104807635A
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Abstract
The invention provides a testing system and method of a portable main retarder. The testing system comprises a photoelectric sensor, an acceleration sensor and a computer, wherein the photoelectric sensor is used for measuring revolving speed of a transmission shaft, the acceleration sensor is used for measuring vibration acceleration amplitude of the main retarder, the computer is used for receiving signals acquired by the photoelectric sensor and the acceleration sensor, the computer analyzes the acquired signals and compares a displayed relation curve between the vibration acceleration amplitude and the revolving speed of the transmission shaft of the main retarder of an automobile real axle with three standard vibration amplitude-revolving speed curves to judge, and quality of the main retarder of the automobile rear axle is detected. The testing system has the advantages that a conventional artificial ear sensing manner which is low in efficiency and accuracy and high in labor intensity is abandoned, the vibration detecting system based on the computer is built, and instantaneity, accuracy, reliability and the like in detection of the main retarder assembly are achieved.
Description
Technical field
The present invention relates to the technical field of measurement and test of automobile, particularly relate to test macro and the method for testing of portable main reducing gear.
Background technology
At present, micro-car rear-end gear reduction Quality Detection places one's entire reliance upon the consummate degree of tradesman and subjective judgement, because everyone judgement has otherness, is thus difficult to analyze and pass judgment on trouble spot and reason thereof, easily occurs erroneous judgement.
Be simplification for judgment criteria, can only judge that whether main to subtract assembly qualified, and precision be low.
In addition, for actual mass production demand, high to tradesman's labour intensity, and efficiency is low.
Summary of the invention
In order to solve the problems of the prior art, the invention provides a kind of test macro of portable main reducing gear.
The invention provides a kind of test macro of portable main reducing gear, comprising:
Photoelectric sensor, for measuring the rotating speed of transmission shaft;
Acceleration transducer, for measuring main reducing gear vibration acceleration amplitude;
Computing machine, for receiving the signal that photoelectric sensor and acceleration transducer collect, computing machine carries out analyzing and processing to the signal collected, relation curve between the vibration acceleration amplitude of the main speed reducer of rear axle of display and rotating speed of transmission shaft, and contrast judge with three standard vibration amplitude-speed curves of regulation, the quality of main speed reducer of rear axle is detected with this.
As a further improvement on the present invention, this test macro also comprises data collecting card, described photoelectric sensor and described acceleration transducer are by the Signal transmissions that collects to described data collecting card, and described data collecting card is transferred to described computing machine after converting the signal collected to digital signal.
As a further improvement on the present invention, this test macro also comprises regulating instrument, described regulating instrument input end is connected with described acceleration transducer with described photoelectric sensor respectively, described regulating instrument output terminal is connected with described data collecting card, and described regulating instrument is transferred to described data collecting card after carrying out shaping and amplification for the signal that degree of will speed up sensor and photoelectric sensor record.
Present invention also offers a kind of detection method using described test macro to detect main reducing gear, comprise the steps:
Tachometric survey step, is attached on transmission shaft by white reflection band, and photoelectric sensor magnetic support is fixed on chassis of vehicle body, measures rotating speed of transmission shaft;
Acceleration analysis step, acceleration transducer is arranged in main reducing gear vertical direction, measures main reducing gear vibration acceleration amplitude;
Determining step, allow the engine speed of automobile is even accelerates to setting value, realize automobile on the way real-time data acquisition in operational process, namely the signal that acceleration transducer and photoelectric sensor record inputs computing machine, computing machine carries out analyzing and processing to collected signal, relation curve between the vibration acceleration amplitude of the main speed reducer of rear axle finally shown and rotating speed of transmission shaft, and contrast judge with three standard vibration amplitude-speed curves of regulation, the quality of main speed reducer of rear axle is detected with this.
As a further improvement on the present invention, in described acceleration analysis step, acceleration transducer inhales ferromagnetic suction in main reducing gear vertical axial direction by powerful.
As a further improvement on the present invention, in described determining step, the engine speed of automobile accelerates to 6000r/min from 0r/min is even.
As a further improvement on the present invention, in described determining step, the signal that acceleration transducer and photoelectric sensor record carries out shaping and amplification through regulating instrument, after convert digital signal to through data collecting card, then the signal collected synchronously is inputted computing machine, in computing machine, analyzing and processing is carried out to collected signal, relation curve between the vibration acceleration amplitude of the main speed reducer of rear axle finally shown and rotating speed of transmission shaft, and contrast judge with three standard vibration amplitude-speed curves of regulation, the quality of main speed reducer of rear axle is detected with this.
As a further improvement on the present invention, described data collecting card is connected with computing machine by USB interface.
The invention has the beneficial effects as follows: the present invention has abandoned conventional inefficiencies, low precision and the perceptive mode sentenced of the artitificial ear that labour intensity is high, establish computer based vibration detecting system, achieve real-time, accuracy, reliability etc. that main gearbox assembly detects.
Accompanying drawing explanation
Fig. 1 is detection method process flow diagram of the present invention;
Fig. 2 is fitting theory curve map of the present invention.
Embodiment
The invention discloses a kind of test macro of portable main reducing gear, comprising:
Photoelectric sensor, for measuring the rotating speed of transmission shaft;
Acceleration transducer, for measuring main reducing gear vibration acceleration amplitude;
Computing machine, for receiving the signal that photoelectric sensor and acceleration transducer collect, computing machine carries out analyzing and processing to the signal collected, relation curve between the vibration acceleration amplitude of the main speed reducer of rear axle of display and rotating speed of transmission shaft, and contrast judge with three standard vibration amplitude-speed curves of regulation, the quality of main speed reducer of rear axle is detected with this.
This test macro also comprises data collecting card, and described photoelectric sensor and described acceleration transducer are by the Signal transmissions that collects to described data collecting card, and described data collecting card is transferred to described computing machine after converting the signal collected to digital signal.
This test macro also comprises regulating instrument, described regulating instrument input end is connected with described acceleration transducer with described photoelectric sensor respectively, described regulating instrument output terminal is connected with described data collecting card, and described regulating instrument is transferred to described data collecting card after carrying out shaping and amplification for the signal that degree of will speed up sensor and photoelectric sensor record.
As shown in Figure 1, the invention also discloses a kind of detection method using test macro to detect main reducing gear, comprise the steps:
First, open instrument container, connect external power supply, start notebook computer, the USB interface access computer that data collecting card is exported;
Tachometric survey step, is attached on transmission shaft by white reflection band, and photoelectric sensor magnetic support is fixed on chassis of vehicle body, measures rotating speed of transmission shaft;
Acceleration analysis step, acceleration transducer inhales ferromagnetic suction (vertical chassis or ground) in main reducing gear vertical direction by powerful, measures main reducing gear vibration acceleration amplitude;
After hardware installation is good, open external power supply switch and corresponding software is tested;
Determining step, micro-car engine rotating speed is allowed to accelerate to 6000r/min from 0r/min is even, realize micro-car on the way real-time data acquisition in operational process, namely the signal that acceleration transducer and photoelectric sensor record carries out shaping and amplification through portable regulating instrument, after convert digital quantity to through data collecting card, then the signal collected synchronously is inputted computing machine, in computing machine, corresponding software carries out analyzing and processing to collected signal, finally by the relation curve between the vibration acceleration amplitude of shown main speed reducer of rear axle and rotating speed of transmission shaft, and it is (qualified with three standard vibration amplitude-speed curves of regulation, good merchantable brand, superfine product) contrast judge, the whether qualified or good merchantable brand of the quality of main speed reducer of rear axle or superfine product is detected with this.
The present invention is by a kind of new main reducing gear quality detection system, and test macro only comprises instrument container and computing machine (other can be placed in instrument container), carries, easy to use; Be applicable to car load testing results, detect in real time with car, the vibration characteristics of main reducing gear when can reflect that car load moves really; The actual measurement vertical vibration of main reducing gear and the relation of rotating speed of transmission shaft, contrast with the typical curve (qualified, good merchantable brand, superfine product) of setting, be convenient to make assessment to the performance of main reducing gear accurate and visually.Can be used for different automobile types test by suitable improvement and detect, highly versatile.
This detection system has been applied in SGMW CN100 project, is proved by actual vehicle road test, comparatively accurately reflects the road driving characteristic of main gearbox assembly at different operating mode (as acceleration, upward slope etc.).
Portable vehicle Vibration-Measuring System is utilized to measure, analyze the main critical value subtracted at micro-car different rotating speeds or speed brief acceleration, these critical values are fitted to a curve, obtain the relation of vibration amplitude and main turn reducing speed or amplitude and the speed of a motor vehicle, under different standards, the judgement of amplitude below critical curve is qualified, and be judged to be defective if amplitude exceeds this critical curve, its matched curve as shown in Figure 2.
The relation curve of matching vibration amplitude and main turn reducing speed is the key point of system, first must by great many of experiments, the critical value measuring amplitude when drawing different rotating speeds, obtain a reasonable sample space, then by analysis and research sample, through many experiments, find a polynomial expression being applicable to these samples, the coordinate figure that must make new advances, matching obtains a new stable curve, and this curve just can as the quality standard just judging that back axle master subtracts.
The present invention also has following technical advantage:
1, abandoned conventional inefficiencies, low precision and the perceptive mode sentenced of the artitificial ear that labour intensity is high, establish computer based vibration detecting system, achieve real-time, accuracy, reliability etc. that main gearbox assembly detects.
2, survey the vertical vibration of main reducing gear and the relation of rotating speed of transmission shaft, contrast with the typical curve (qualified, good merchantable brand, superfine product) of setting, be convenient to make assessment to the performance of main reducing gear accurate and visually.
3, this portable car rear-end gear reduction attribute test system that declines is for car load testing results, detects in real time, the vibration characteristics of main reducing gear when can reflect that car load moves really with car, and this test macro carry, easy to use.
4, this test macro highly versatile, be can be used for different automobile types test by suitable improvement and is detected.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to protection scope of the present invention.
Claims (8)
1. a test macro for portable main reducing gear, is characterized in that, comprising:
Photoelectric sensor, for measuring the rotating speed of transmission shaft;
Acceleration transducer, for measuring main reducing gear vibration acceleration amplitude;
Computing machine, for receiving the signal that photoelectric sensor and acceleration transducer collect, computing machine carries out analyzing and processing to the signal collected, relation curve between the vibration acceleration amplitude of the main speed reducer of rear axle of display and rotating speed of transmission shaft, and contrast judge with three standard vibration amplitude-speed curves of regulation, the quality of main speed reducer of rear axle is detected with this.
2. test macro according to claim 1, it is characterized in that: this test macro also comprises data collecting card, described photoelectric sensor and described acceleration transducer are by the Signal transmissions that collects to described data collecting card, and described data collecting card is transferred to described computing machine after converting the signal collected to digital signal.
3. test macro according to claim 2, it is characterized in that: this test macro also comprises regulating instrument, described regulating instrument input end is connected with described acceleration transducer with described photoelectric sensor respectively, described regulating instrument output terminal is connected with described data collecting card, and described regulating instrument is transferred to described data collecting card after carrying out shaping and amplification for the signal that degree of will speed up sensor and photoelectric sensor record.
4. use the detection method that described in any one of claim 1 to 3, test macro detects main reducing gear, it is characterized in that, comprise the steps:
Tachometric survey step, is attached on transmission shaft by white reflection band, and photoelectric sensor magnetic support is fixed on chassis of vehicle body, measures rotating speed of transmission shaft;
Acceleration analysis step, acceleration transducer is arranged in main reducing gear vertical direction, measures main reducing gear vibration acceleration amplitude;
Determining step, allow the engine speed of automobile is even accelerates to setting value, realize automobile on the way real-time data acquisition in operational process, namely the signal that acceleration transducer and photoelectric sensor record inputs computing machine, computing machine carries out analyzing and processing to collected signal, relation curve between the vibration acceleration amplitude of the main speed reducer of rear axle finally shown and rotating speed of transmission shaft, and contrast judge with three standard vibration amplitude-speed curves of regulation, the quality of main speed reducer of rear axle is detected with this.
5. method of testing according to claim 4, is characterized in that: in described acceleration analysis step, and acceleration transducer inhales ferromagnetic suction in main reducing gear vertical axial direction by powerful.
6. method of testing according to claim 4, is characterized in that: in described determining step, and the engine speed of automobile accelerates to 6000r/min from 0r/min is even.
7. method of testing according to claim 4, it is characterized in that: in described determining step, the signal that acceleration transducer and photoelectric sensor record carries out shaping and amplification through regulating instrument, after convert digital signal to through data collecting card, then the signal collected synchronously is inputted computing machine, in computing machine, analyzing and processing is carried out to collected signal, relation curve between the vibration acceleration amplitude of the main speed reducer of rear axle finally shown and rotating speed of transmission shaft, and contrast judge with three standard vibration amplitude-speed curves of regulation, the quality of main speed reducer of rear axle is detected with this.
8. method of testing according to claim 7, is characterized in that: described data collecting card is connected with computing machine by USB interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510214534.9A CN104807635A (en) | 2015-04-29 | 2015-04-29 | Testing system and method of portable main retarder |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510214534.9A CN104807635A (en) | 2015-04-29 | 2015-04-29 | Testing system and method of portable main retarder |
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| CN104807635A true CN104807635A (en) | 2015-07-29 |
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| CN201510214534.9A Pending CN104807635A (en) | 2015-04-29 | 2015-04-29 | Testing system and method of portable main retarder |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106441554A (en) * | 2016-10-18 | 2017-02-22 | 华南农业大学 | Mountainous orchard double-rail conveyer vibration testing system and testing method |
| CN114441124A (en) * | 2021-12-17 | 2022-05-06 | 中国航发湖南动力机械研究所 | Helicopter transmission system test bed vibration test system and method |
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| CN202119630U (en) * | 2011-06-26 | 2012-01-18 | 北京理工大学 | On-line monitoring and fault diagnosis device for bench test of reliability of microplane automobile driving axle |
| JP2012132862A (en) * | 2010-12-24 | 2012-07-12 | Mitsubishi Motors Corp | Vibration test apparatus for vehicle speed reducer |
| CN104215454A (en) * | 2014-09-19 | 2014-12-17 | 武汉理工大学 | Automotive rear bridge main speed reducer noise performance testing method |
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2015
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| JP2012132862A (en) * | 2010-12-24 | 2012-07-12 | Mitsubishi Motors Corp | Vibration test apparatus for vehicle speed reducer |
| CN202092871U (en) * | 2011-05-20 | 2011-12-28 | 万向钱潮（桂林）汽车底盘部件有限公司 | Noise detection device for automobile rear axle main reducer assembly |
| CN202119630U (en) * | 2011-06-26 | 2012-01-18 | 北京理工大学 | On-line monitoring and fault diagnosis device for bench test of reliability of microplane automobile driving axle |
| CN104215454A (en) * | 2014-09-19 | 2014-12-17 | 武汉理工大学 | Automotive rear bridge main speed reducer noise performance testing method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106441554A (en) * | 2016-10-18 | 2017-02-22 | 华南农业大学 | Mountainous orchard double-rail conveyer vibration testing system and testing method |
| CN114441124A (en) * | 2021-12-17 | 2022-05-06 | 中国航发湖南动力机械研究所 | Helicopter transmission system test bed vibration test system and method |
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Application publication date: 20150729 |