CN103048131A - Vehicle transmission device mode test table - Google Patents
Vehicle transmission device mode test table Download PDFInfo
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- CN103048131A CN103048131A CN2013100222144A CN201310022214A CN103048131A CN 103048131 A CN103048131 A CN 103048131A CN 2013100222144 A CN2013100222144 A CN 2013100222144A CN 201310022214 A CN201310022214 A CN 201310022214A CN 103048131 A CN103048131 A CN 103048131A
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Abstract
The invention discloses a vehicle transmission device mode test table. The test table comprises an exciter, a hydro-viscous dynamometer, an angular displacement sensor, and a torque sensor, wherein an excitation system applies a controllable torque to the input end of a gear transmission system. A closed-loop electro-hydraulic system is used for generating torque, can provide a static preload, and can also provide a sinusoidal or arbitrary type of dynamic torque smaller than 1000Hz. The hydro-viscous dynamometer is used for applying loads on the output end of the gear transmission system, so that the shaft system of a transmission case makes torsional vibration in a certain angle range, thereby carrying out mode test. Vibration response signals acquired by the angular displacement sensor and the torque sensor mounted at the output end of the gear transmission case can be used for mode analysis, and can be also transmitted to a main controller of the excitation system as a feedback signal; and the system stops applying loads once the angular displacement or torque exceeds a set value, thereby realizing the overload protection function.
Description
Technical field
It is modal test bed to the present invention relates to a kind of vehicle transmission gear, belongs to the vehicle test equipment technical field.
Background technology
Modal test is by test the system that gathers to be inputted the process that obtains modal parameter with the identification of output signal process parameter, is also referred to as test modal analysis.Test modal analysis can be divided into two kinds of diverse ways at present, canonical vibration shape test method(s) (NMT) and frequency response function method (FRF), because the frequency response function method has and can motivate simultaneously whole mode, test duration is short, the instrument comparison in equipment is simple, therefore the convenient test advantage is widely used in present vehicle transmission gear modal test.But open loop control is all adopted in the test of the vehicle transmission gear operation mode of most, can not accomplish the accurate simulation to operating load, in addition, and to not having overload protective function by loading the excessive structural failure that causes yet.
Summary of the invention
For the deficiency of above-mentioned modal test, purpose of the present invention provides a kind of vehicle transmission gear modal test bed, and it can accomplish the accurate simulation to vehicle operation load under closed-loop control, can play overload protective function again.
Modal test bed vibrator, terminal pad, speed-changing gear box, terminal pad, angular displacement sensor, torque sensor, acceleration transducer, sticking dynamometer machine and the electrohydraulic control system of comprising of vehicle transmission gear of the present invention, wherein, electrohydraulic control system comprises pumping plant, master controller, data acquisition unit and computing machine;
Vibrator is supported on the cast iron floor by being rigidly connected, the speed-changing gear box input end is connected with vibrator by terminal pad, speed-changing gear box has two output shafts that are arranged symmetrically with, the output shaft of speed-changing gear box one side is connected with torque sensor by terminal pad, angular displacement sensor is installed on the terminal pad, and the other end ring flange of torque sensor is fixedly connected with by the sticking dynamometer machine of bolt and liquid, it is identical therewith that speed-changing gear box opposite side output terminal connects, and acceleration transducer is installed in the speed-changing gear box on previously selected each measuring point; Torque sensor, angular displacement sensor and acceleration transducer be connected be connected with data acquisition unit and will test in the data-signal that gathers be transferred to data acquisition unit, data acquisition unit passes to computing machine with data again; Pumping plant connects vibrator, provides exciting source to vibrator, and master controller connects respectively pumping plant, vibrator and data acquisition unit, the excitation that the main controller controls vibrator applies gear; Computing machine sends the steering order of moment of torsion and angle to master controller by data acquisition unit; when in case angular displacement or moment of torsion surpass setting value; electrohydraulic control system stops to provide exciting source to vibrator, namely stops speed-changing gear box being loaded, thereby plays the effect of overload protection.
Computing machine is to master controller pipage control signal, and the control vibrator applies excitation to gear, because the sticking dynamometer machine of liquid loads gear box output end, makes gear output shaft torsional oscillation in certain angular range; Data acquisition unit is by data acquisition front, and namely torque sensor, angular displacement sensor and acceleration transducer record in computing machine and analyze with the output signal of upper sensor and to it, obtain the modal parameter of gear; In addition, the output signal of speed-changing gear box output terminal angular displacement sensor and torque sensor is used for electrohydraulic control system is carried out closed-loop control as feedback signal.
Beneficial effect:
1, the present invention has realized closed-loop control by electrohydraulic control system to the vehicle transmission gear operation mode, therefore can accurately simulate operating load, has improved the accuracy of test modal analysis.
2, the present invention's diagonal displacement or moment of torsion in electrohydraulic control system is provided with definite value, in case above data surpass setting value in process of the test, system stops gear being loaded, and can realize overload protection.
Description of drawings
Fig. 1 is testing table annexation synoptic diagram of the present invention;
Fig. 2 is that testing table of the present invention is arranged synoptic diagram.
Wherein, 1-vibrator, 2-terminal pad, 3-speed-changing gear box, 4-terminal pad, 5-angular displacement sensor, 6-torque sensor, the sticking dynamometer machine of 7-liquid.
Embodiment
Below in conjunction with the accompanying drawing embodiment that develops simultaneously, describe the present invention.
As shown in Figure 1, it is modal test bed to the invention provides a kind of vehicle transmission gear, comprise vibrator 1, terminal pad 2, speed-changing gear box 3, terminal pad 4, angular displacement sensor 5, torque sensor 6, acceleration transducer, sticking dynamometer machine 7 and electrohydraulic control system, wherein, electrohydraulic control system comprises pumping plant, master controller, data acquisition unit and computing machine;
Vibrator 1 is supported on the cast iron floor by being rigidly connected, speed-changing gear box 3 input ends are connected with vibrator 1 by terminal pad 2, speed-changing gear box 3 has two output shafts that are arranged symmetrically with, the output shaft of speed-changing gear box 1 one sides is connected with torque sensor 6 by terminal pad 4, angular displacement sensor 5 is installed on the terminal pad 4, and the other end ring flange of torque sensor 6 is fixedly connected with by the sticking dynamometer machine 7 of bolt and liquid, it is identical therewith that speed-changing gear box opposite side output terminal connects, and acceleration transducer is installed in the speed-changing gear box on previously selected each measuring point; Torque sensor 6, angular displacement sensor 5 be connected with acceleration transducer be connected with data acquisition unit and will test in the data-signal that gathers be transferred to data acquisition unit, data acquisition unit passes to computing machine with data again; Pumping plant connects vibrator, provides exciting source to vibrator, and master controller connects respectively pumping plant, vibrator and data acquisition unit, the excitation that the main controller controls vibrator applies gear; Computing machine sends the steering order of moment of torsion and angle to master controller by data acquisition unit; when in case angular displacement or moment of torsion surpass setting value; electrohydraulic control system stops to provide exciting source to vibrator, namely stops speed-changing gear box being loaded, thereby plays the effect of overload protection.
Principle of work as shown in Figure 2, (computing machine) is to master controller pipage control signal, the control vibrator applies excitation to gear, because 7 pairs of gear box output ends of the sticking dynamometer machine of liquid load, makes gear output shaft torsional oscillation in certain angular range; Data acquisition unit is by data acquisition front, and namely torque sensor 6, angular displacement sensor 5 and acceleration transducer record in computing machine and analyze with the output signal of upper sensor and to it, obtain the modal parameter of gear; In addition, the output signal of speed-changing gear box output terminal angular displacement sensor 5 and torque sensor 6 is used for electrohydraulic control system is carried out closed-loop control as feedback signal.
The input end of 1 pair of speed-changing gear box 3 of vibrator applies a controlled moment of torsion, it is to be finished by the electrohydraulic control system of closed loop that moment of torsion generates, preloading of a static state can be provided, in addition, can also provide the sinusoidal of the highest 1000Hz or any dynamic torque of condition.
In sum, more than be preferred embodiment of the present invention only, be not for limiting protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1. vehicle transmission gear is modal test bed, it is characterized in that, comprise: vibrator (1), terminal pad (2), speed-changing gear box (3), terminal pad (4), angular displacement sensor (5), torque sensor (6), acceleration transducer, sticking dynamometer machine (7) and electrohydraulic control system, wherein, electrohydraulic control system comprises pumping plant, master controller, data acquisition unit and computing machine;
Vibrator (1) is supported on the cast iron floor by being rigidly connected, speed-changing gear box (3) input end is connected with vibrator (1) by terminal pad (2), speed-changing gear box (3) has two output shafts that are arranged symmetrically with, the output shaft of speed-changing gear box (1) one side is connected with torque sensor (6) by terminal pad (4), angular displacement sensor (5) is installed on the terminal pad (4), and the other end ring flange of torque sensor (6) is fixedly connected with by the sticking dynamometer machine (7) of bolt and liquid, it is identical therewith that speed-changing gear box opposite side output terminal connects, and acceleration transducer is installed in the speed-changing gear box on previously selected each measuring point; Torque sensor (6), angular displacement sensor (5) be connected with acceleration transducer be connected with data acquisition unit and will test in the data-signal that gathers be transferred to data acquisition unit, data acquisition unit passes to computing machine with data again; Pumping plant connects vibrator, provides exciting source to vibrator, and master controller connects respectively pumping plant, vibrator and data acquisition unit, the excitation that the main controller controls vibrator applies gear; Computing machine sends the steering order of moment of torsion and angle to master controller by data acquisition unit.
2. vehicle transmission gear as claimed in claim 1 is modal test bed, it is characterized in that, when the angular displacement that described angular displacement sensor (5) and torque sensor (6) detect or moment of torsion surpassed setting value, electrohydraulic control system stopped to provide exciting source to vibrator.
3. vehicle transmission gear as claimed in claim 1 is modal test bed, it is characterized in that described computing machine is to master controller pipage control signal, the control vibrator applies excitation to gear, because the sticking dynamometer machine (7) of liquid loads gear box output end, makes gear output shaft torsional oscillation in certain angular range; Data acquisition unit is by data acquisition front, and namely torque sensor (6), angular displacement sensor (5) and acceleration transducer record in computing machine and analyze with the output signal of upper sensor and to it, obtain the modal parameter of gear; In addition, the output signal of speed-changing gear box output terminal angular displacement sensor (5) and torque sensor (6) is carried out closed-loop control as feedback signal to electrohydraulic control system.
Priority Applications (1)
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| CN2013100222144A CN103048131A (en) | 2013-01-21 | 2013-01-21 | Vehicle transmission device mode test table |
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| CN2013100222144A CN103048131A (en) | 2013-01-21 | 2013-01-21 | Vehicle transmission device mode test table |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104568431A (en) * | 2014-12-29 | 2015-04-29 | 浙江大学 | Hydro-viscous transmission testing device for measuring dynamic parameter of oil film |
| CN107209083A (en) * | 2014-12-22 | 2017-09-26 | Avl里斯脱有限公司 | Method and apparatus for implementing test run on testing stand |
| CN108426550A (en) * | 2018-03-05 | 2018-08-21 | 浙江大学 | A kind of displacement measurement device of hydro-viscous speed governing clutch |
| CN109946090A (en) * | 2019-03-05 | 2019-06-28 | 浙江吉利汽车研究院有限公司 | Vehicle Bench Test System and its test method |
| CN111272423A (en) * | 2018-12-04 | 2020-06-12 | 郑州宇通客车股份有限公司 | Speed reducer testing device |
| CN111656153A (en) * | 2018-02-05 | 2020-09-11 | 罗托特斯特国际公司 | Method and device for dynamometer testing of motor vehicle |
| CN114046990A (en) * | 2021-11-16 | 2022-02-15 | 重庆大学 | High-temperature high-speed cylindrical gear torsional vibration endurance test stand |
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| SU1048347A1 (en) * | 1977-08-22 | 1983-10-15 | Горьковский Автомобильный Завод | Stand for testing vehicle main transmission by closed loop |
| CN102207425A (en) * | 2011-03-31 | 2011-10-05 | 长沙高新开发区湖湘测控软件有限公司 | Durable test stand for automobile speed changing box |
| JP2012132862A (en) * | 2010-12-24 | 2012-07-12 | Mitsubishi Motors Corp | Vibration test apparatus for vehicle speed reducer |
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2013
- 2013-01-21 CN CN2013100222144A patent/CN103048131A/en active Pending
Patent Citations (3)
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| SU1048347A1 (en) * | 1977-08-22 | 1983-10-15 | Горьковский Автомобильный Завод | Stand for testing vehicle main transmission by closed loop |
| JP2012132862A (en) * | 2010-12-24 | 2012-07-12 | Mitsubishi Motors Corp | Vibration test apparatus for vehicle speed reducer |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107209083A (en) * | 2014-12-22 | 2017-09-26 | Avl里斯脱有限公司 | Method and apparatus for implementing test run on testing stand |
| CN104568431A (en) * | 2014-12-29 | 2015-04-29 | 浙江大学 | Hydro-viscous transmission testing device for measuring dynamic parameter of oil film |
| CN111656153A (en) * | 2018-02-05 | 2020-09-11 | 罗托特斯特国际公司 | Method and device for dynamometer testing of motor vehicle |
| CN111656153B (en) * | 2018-02-05 | 2022-10-18 | 罗托特斯特国际公司 | Method and device for dynamometer testing of motor vehicle |
| CN108426550A (en) * | 2018-03-05 | 2018-08-21 | 浙江大学 | A kind of displacement measurement device of hydro-viscous speed governing clutch |
| CN111272423A (en) * | 2018-12-04 | 2020-06-12 | 郑州宇通客车股份有限公司 | Speed reducer testing device |
| CN109946090A (en) * | 2019-03-05 | 2019-06-28 | 浙江吉利汽车研究院有限公司 | Vehicle Bench Test System and its test method |
| CN114046990A (en) * | 2021-11-16 | 2022-02-15 | 重庆大学 | High-temperature high-speed cylindrical gear torsional vibration endurance test stand |
| CN114046990B (en) * | 2021-11-16 | 2023-11-14 | 重庆大学 | High-temperature high-speed cylindrical gear torsional vibration endurance test stand |
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Application publication date: 20130417 |