CN100557400C - Exciting Method and Exciter for Torsional Vibration of Dual-Mass Flywheel - Google Patents
Exciting Method and Exciter for Torsional Vibration of Dual-Mass Flywheel Download PDFInfo
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- CN100557400C CN100557400C CNB2007101683354A CN200710168335A CN100557400C CN 100557400 C CN100557400 C CN 100557400C CN B2007101683354 A CNB2007101683354 A CN B2007101683354A CN 200710168335 A CN200710168335 A CN 200710168335A CN 100557400 C CN100557400 C CN 100557400C
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Abstract
本发明涉及双质量飞轮扭转振动的激振方法及激振器。该方法采用变频电机拖动包括旋转液压摆缸、双质量飞轮部件旋转，以模拟发动机转速工况；采用旋转液压摆缸对双质量飞轮的主、次飞轮间提供扭摆运动，以模拟扭振激振工况。该激振器包括双质量飞轮及其旋转和扭摆驱动机构；所述旋转和扭摆驱动机构，其旋转液压摆缸(8)的摆缸体通过与摆缸右端盖(9)相连的传动套(11)，在同侧与主飞轮(13)和与摆缸轴(4)相连的次飞轮(15)相连接；扭矩传感器(10)及摆角传感器(12)的扰流铁芯装在次飞轮的轴上，摆角传感器的线圈装在与主飞轮固连的传动套上。本发明可以模拟发动机各种扭振工况，实现双质量飞轮扭振性能的动态试验。
The invention relates to an excitation method and an exciter for torsional vibration of a double-mass flywheel. In this method, a variable frequency motor is used to drive the components including the rotating hydraulic swing cylinder and the dual-mass flywheel to simulate the engine speed; vibration conditions. The vibrator includes a double-mass flywheel and its rotation and torsion drive mechanism; the rotation and torsion drive mechanism, the swing cylinder body of the rotary hydraulic swing cylinder (8) passes through the transmission sleeve ( 11), on the same side, it is connected with the main flywheel (13) and the secondary flywheel (15) connected with the swing cylinder shaft (4); the spoiler iron core of the torque sensor (10) and the swing angle sensor (12) is installed On the axle of flywheel, the coil of pendulum angle sensor is contained on the drive sleeve that is fixedly connected with main flywheel. The invention can simulate various torsional vibration working conditions of the engine and realize the dynamic test of the torsional vibration performance of the dual-mass flywheel.
Description
Technical field
The present invention relates to a kind of motor car engine double quality flywheel torsional oscillation performance test stand excitation method and vibrator of being used for.
Background technology
In the engine working process, bent axle is subjected to periodically variable acting force on the one hand, and rotating speed also is cyclical variation, and the bigger moment of inertia of bent axle axle system is tending towards at the uniform velocity rotating speed on the other hand, and this two aspects acting in conjunction has just produced the twisting vibration of bent axle.Because bent axle is longer, torsional rigidity is little, and the moment of inertia of bent axle axle system is big, the frequency of crankshaft torsional vibrations is lower, in the engine operation range of speeds, be easy to produce resonance with kinematic train, aggravation drive disk assembly, the wearing and tearing of wheel box part, premature failure, even fracture.Therefore, twisting vibration is to carry out the key factor that the vehicle transmission component characteristic test must be considered.
Double mass flywheel is actually makes primary flywheel with traditional flywheel by certain quality proportioning branch and secondary flywheel is divided into two parts, the centre is coupled by torsional vibration damper, the clutch plate torsional vibration damper that has replaced conventional clutch, so both guaranteed that total moment of inertia was constant, changed the distribution of whole drive system moment of inertia again, and the torsional vibration damper between the primary and secondary level flywheel can be arranged in than large tracts of land, greatly reduced torsional rigidity, its damping property is improved greatly than the torsional vibration damper performance of conventional clutch, and the vibration performance of kinematic train fundamentally improves.
The double quality flywheel torsional oscillation performance test stand is exactly the device for the twisting vibration performance of measuring double mass flywheel.The effect of the reverse vibration generator on it is to make the twisting vibration Performance Test System produce torsional oscillation, twisting vibration state when being used for the rotation of simulated engine axle system, for torsional vibration damper provides the twisting vibration vibration source, vibrator can be realized the adjusting to torsion frequency and amplitude (angle), thereby obtains the vibration situation under the Different Dynamic condition.
The economic interests that double mass flywheel brings enterprise are self-evident, the demand in market enlarges rapidly, this technology all has been tending towards ripe from the theory to the actual production abroad, but still be a newer technology at home, its theory is gone back imperfection, particularly its torsional oscillation aspect of performance is not also set up a perfect theoretical system and industry standard, domestic to the double mass flywheel each side research and test at the startup.Therefore, exploitation double mass flywheel torsional oscillation performance test test method and testing table are imperative.
Existingly be specifically designed to motor car engine double quality flywheel torsional oscillation performance test stand and excitation method, vibrator is studied also very limited at home.Because the work pivot angle of double mass flywheel is big, does not have a kind of special testing table, and be improvement the engine torque damper test stand at double mass flywheel.For example: the universal shaft vibrator, adopt universal shaft to depart from the excitation angle of a setting of main axis, cause excitement of torsional vibration in rotary course, this device is simple, but the exciting angle is quite limited, can not comprise the torsional oscillation scope of double mass flywheel on a large scale, and test effect is not good; The hydraulic actuation vibrator adopts hydraulic driving mode to make the piston rod to-and-fro movement, vibration damper is produced rock, thereby produce torsional oscillation, and this mode is only rocked and do not rotated, can not the torsional oscillation situation of simulated dual mass flywheel in rotary course, be unfit to do the dynamic test test.
Summary of the invention
Technical matters to be solved by this invention is: a kind of excitation method and the vibrator that can simulate on testing table with Control of Automobile engine double quality flywheel torsional oscillation operating mode is provided, thereby provides reliable test figure for the vehicle transmission component capabilities.
The present invention solves its technical matters and adopts following technical scheme:
The vibrator of double quality flywheel torsional oscillation provided by the invention, its structure is: comprise variable-frequency motor, test specimen double mass flywheel and rotation thereof and rock driving mechanism.Described rotation and rock driving mechanism, the tilt cylinder right end cap of its rotating hydraulic tilt cylinder links to each other with the primary flywheel of double mass flywheel by drive sleeve, the tilt cylinder axle of its rotating hydraulic tilt cylinder is connected with time flywheel, between described primary flywheel and the inferior flywheel by torsional vibration damper coupling carry-over moment and vibration damping; The flow-disturbing iron core of mounting torque sensor and angle sensor in drive sleeve and the shaft part that inferior flywheel links to each other, the coil of angle sensor is arranged on the drive sleeve that is connected with primary flywheel; The tilt cylinder axle is connected with the motor shaft of variable-frequency motor by big flexibility shaft coupling.
The present invention adopts above-mentioned vibrator, and adopts the method that may further comprise the steps to come the torsional vibration excitation of simulated engine in rotation process:
(1) rotation Work condition analogue: adopt variable-frequency motor to drag and comprise rotating hydraulic tilt cylinder, the rotation of double mass flywheel parts, realize the simulation of engine speed operating mode;
(2) torsional vibration excitation Work condition analogue: adopt between the primary and secondary flywheel of rotating hydraulic tilt cylinder torsional movement is provided to double mass flywheel, the necessary link that the test specimen double mass flywheel is directly transmitted as driving torque, the primary and secondary flywheel of double mass flywheel and therebetween torsional vibration damper, silicone oil become the necessary moment of inertia of twisting vibration, primary and secondary flywheel inertia than, rigidity and damping factor, realize the simulation of torsional vibration excitation operating mode;
The present invention carries out the dynamic test of double mass flywheel torsional oscillation performance by above-mentioned steps.
The present invention compared with prior art has following major advantage:
One. can realize the different torsional oscillation pivot angles under the various rotating speeds of simulated engine and the torsional oscillation operating mode of torsion frequency, for the torsional oscillation performance test of double mass flywheel provides dynamic torsional oscillation condition.
They are two years old. by adjustable frequency motor stepless speed regulation, but the different rotating speeds operating mode of simulated engine.
They are three years old. and by to rotating hydraulic tilt cylinder fluid pressure and flow control, what can change tilt cylinder rocks angle and frequency, realizes the torsional oscillation operating mode with the various states of different torsional oscillation amplitudes and frequency simulated engine.
The angle of rocking of double mass flywheel is positive and negative 40～60 °, the rotating hydraulic tilt cylinder adopts a pair of intra vane and a pair of outer leafs to realize, the control that can realize torsional movement by the hydraulic pump and the operation valve at external hydraulic station: adopt reversal valve to change to rock direction and realize positive and negative rocking, and rock frequency with commutating frequency control, by pressure and flowrate control valve, realize the control of rocking moment and rocking angle.
Description of drawings
Fig. 1 is an exciter structure synoptic diagram of the present invention.
Fig. 2 is that double quality flywheel torsional oscillation vibrator power circuit closed loop is transmitted synoptic diagram.
Among the figure: 1. support; 2. variable-frequency motor; 3. big flexibility shaft coupling; 4. tilt cylinder axle; 5. support; 6. spacer; 7 conflux bodies; 8. rotating hydraulic tilt cylinder; 9. tilt cylinder right end cap; 10. torque sensor; 11. drive sleeve; 12. angle sensor; 13. primary flywheel; 14. torsional vibration damper; 15. inferior flywheel; 16 photoelectric coded disks; 17. photoelectric detection system; 18. stand.
Embodiment
The invention will be further described below in conjunction with instantiation, but do not limit the present invention.
The excitation method of double quality flywheel torsional oscillation provided by the invention is to adopt the torsional vibration excitation of method simulated engine in rotation process that may further comprise the steps:
(1) rotation Work condition analogue:
Adopt variable-frequency motor to drag and comprise rotating hydraulic tilt cylinder, the rotation of double mass flywheel parts, realize the simulation of engine speed operating mode;
(2) torsional vibration excitation Work condition analogue:
Adopt between the primary and secondary flywheel of rotating hydraulic tilt cylinder torsional movement is provided double mass flywheel, the necessary link that the test specimen double mass flywheel is directly transmitted as driving torque, the primary and secondary flywheel of double mass flywheel and therebetween torsionspring, silicone oil become the necessary moment of inertia of twisting vibration, primary and secondary flywheel inertia than, rigidity and damping factor, realize the simulation of torsional vibration excitation operating mode;
By above-mentioned steps, carry out the dynamic test of double mass flywheel torsional oscillation performance.
The present invention also adopts the torsional vibration excitation of method control engine in rotation process of following steps:
(1) adopts the Frequency Converter Control variable-frequency motor to realize stepless speed regulation, realize the control of engine rotation operating mode;
(2) adopt hydraulic control system to control the frequency and the amplitude of oscillation of rotating hydraulic tilt cylinder, realize the control that comprises various torsion frequencies and amplitude operating mode of engine torsional vibration excitation.
This method is transmitted the test specimen double mass flywheel as the exciting force of exciter square a necessary link, the primary and secondary flywheel and therebetween torsionspring, silicone oil become the necessary moment of inertia of twisting vibration, primary and secondary flywheel inertia than, rigidity and damping factor, rather than resemble the independent exciting of other vibrator and again test specimen installed passive detection.
This method has realized the simulation of the various operating modes of engine rotation torsional oscillation, and can be separately or jointly control: promptly by the rotatablely moving of driven by motor rearward part, engine is embodied under the rotating speed operating mode to the effect of double mass flywheel rotation; By of the effect of rotating hydraulic tilt cylinder, and be delivered on the torsionspring, produce twisting vibration, the engine torsional vibration excitation is embodied the torsional oscillation factor of double mass flywheel double mass flywheel primary and secondary level flywheel; By frequency control, control various rotating speed operating modes, by the frequency and the amplitude of oscillation of control rotating hydraulic tilt cylinder, realize the control of torsion frequency and amplitude, and the control of these aspects can carry out separately, also can unite and carry out.
The vibrator of double quality flywheel torsional oscillation provided by the invention, its structure be as shown in Figure 1: comprise test specimen double mass flywheel and rotation thereof and rock driving mechanism.Described rotation and rock driving mechanism, the drive sleeve 11 of the tilt cylinder body of its rotating hydraulic tilt cylinder 8 by linking to each other with tilt cylinder right end cap 9 is connected with the inferior flywheel 15 that links to each other with tilt cylinder axle 4 with the primary flywheel 13 of double mass flywheel at homonymy; The flow-disturbing iron core of mounting torque sensor 10 and angle sensor 12 in drive sleeve 11 and the shaft part that inferior flywheel 15 links to each other, the coil of angle sensor 12 is arranged on the drive sleeve 11 that is connected with primary flywheel 13.
Described rotating hydraulic tilt cylinder 8, its tilt cylinder axle 4 links to each other in the sealing mode of interlocking with conflux body 7, and the oil duct of the two communicates.Conflux body 7 can be connected with bolt by spacer 6 usefulness pins with support 5.
This vibrator adopts and to add large-scale tilt cylinder right end cap, realize being connected with the bigger drive sleeve of diameter, thereby for the interior installation shaft of drive sleeve with the sensor slot milling is set; Two parts (tilt cylinder axle and tilt cylinder body) of realizing the relative motion of rotating hydraulic tilt cylinder by drive sleeve are connected with the homonymy of primary flywheel at flywheel with the inferior flywheel of double mass flywheel respectively; Torque sensor is arranged on in the drive sleeve and the shaft part that double mass flywheel time flywheel links to each other, can directly record the moment of torsion between the primary and secondary flywheel like this, the flow-disturbing iron core of angle sensor is arranged on the shaft part that links to each other with double mass flywheel time flywheel, coil is arranged on the drive sleeve that is connected with primary flywheel, can directly obtain the pivot angle between the primary and secondary flywheel like this, therefore the data that record all directly obtain from the primary and secondary flywheel, have reduced the intermediate connecting part transmission error; Two parts of rotating hydraulic tilt cylinder relative motion directly to the primary and secondary wheel action of double mass flywheel, with the necessary link of double mass flywheel as the torsional vibration excitation transmission of torque, embody the effect of double mass flywheel in actual torsional oscillation operating mode; Employing is enclosed within the conflux body on the axle and fixes with bearing, realizes that extraneous hydraulic circuit can be attached thereto; Oil duct on the conflux body communicates with the tilt cylinder axle that has oil duct, guarantees that tilt cylinder axle and tilt cylinder can realize the exchange of hydraulic oil in rotary course, thereby realize that extraneous hydraulic circuit and rotating hydraulic tilt cylinder keep communicating in rotation process.
Below in conjunction with Fig. 1 vibrator provided by the invention is described further:
Support 1: variable-frequency motor 2, support 5 and stand 18 are installed above it, and in order to fix the relative position of other parts.Support 5 and stand 18 support tilt cylinder axles 4 and on parts, make it to keep center line coaxial with variable-frequency motor 2 arbors.
Rotary driving part: promptly variable-frequency motor 2, drive common rotation such as tilt cylinder axle 4, rotating hydraulic tilt cylinder and double mass flywheel.Big flexibility shaft coupling 3 connects motor shaft and tilt cylinder axle 4, plays vibration isolation and protection motor
Rock driver part: mainly form, be installed on the tilt cylinder axle 4 by conflux body 7 and rotating hydraulic tilt cylinder 8.4 on conflux body 7 and tilt cylinder axle realize that by oil duct on pipe adapter on the conflux body 7 and the tilt cylinder axle 4 the rotating hydraulic tilt cylinder and the fluid of external hydraulic control system exchange for being tightly connected.Rotating hydraulic tilt cylinder 8 is divided into the part of two relative torsional movements: first is made up of hydraulic pressure tilt cylinder body, end cap (comprise left end cap and add large-scale right end cap 9) and a pair of outer leafs, connects with bolt between each parts; Second portion is made up of tilt cylinder axle 4 and a pair of intra vane, and tilt cylinder axle 4 is transmission shafts, and it stretches out from the tilt cylinder two ends, and an end links to each other with big flexibility shaft coupling 3, and the other end links to each other with inferior flywheel 15, and intra vane embeds in the tilt cylinder axle 4; A pair of intra vane and outer leafs can realize that the wide-angle of torsional vibration excitation is rocked (less than 180 °).
Test specimen double mass flywheel: form by primary flywheel 13, torsional vibration damper 14, inferior flywheel 15, pass through torsional vibration damper 14 coupling carry-over moment and vibration dampings between the primary and secondary flywheel, primary flywheel 13 links to each other by drive sleeve 11 with tilt cylinder right end cap 9, inferior flywheel 15 links to each other with tilt cylinder axle 4, drive sleeve 11 all is connected by bolt with primary flywheel 13 with tilt cylinder right end cap 9, to realize applying torsional excitation between two quality to double mass flywheel.Silicone oil damping action between the moment of inertia of double mass flywheel, primary and secondary flywheel inertia ratio, torsional vibration damper torsional rigidity, torsional vibration damper directly is the factor that influences the torsional oscillation response;
The sensor test parts: torque sensor 10 is arranged on tilt cylinder axle 4 and the shaft part that time flywheel 15 is connected, the measurement of realization moment of torsion; Angle sensor 12 is arranged on 15 on primary flywheel 13 and inferior flywheel, obtains their relative rotation in real time; Photoelectric coded disk 16 is set on tilt cylinder axle 4, photoelectric detection system 17 is installed in the stand 18, constitute speed probe, to obtain motor speed.
The power circuit closed loop transmission of double mass flywheel torsional oscillation of the present invention vibration vibrator is as shown in Figure 2: variable-frequency motor 2 drives the total systems rotation, make tilt cylinder axle 4 produce relative rocking by hydraulic system in addition with the tilt cylinder body, wherein the tilt cylinder body links to each other with primary flywheel 13 by drive sleeve 11, primary flywheel passes to time flywheel by the moment that will pass over by torsional vibration damper 10, the dimension flywheel links to each other with the tilt cylinder axle, thereby realizes the closed power transmission of two relative motion parts of rotation tilt cylinder.
During work, variable-frequency motor 2 drives transmission shaft 4 and the common rotation of axle upper-part (removing conflux body 7) thereof by big flexibility shaft coupling 3, for the torsional oscillation of simulated engine in rotary course provides the rotation condition, by the stepless speed regulation of frequency converter realization to motor, thus the operating mode of realization engine different rotating speeds; Rotating hydraulic tilt cylinder 8 is in rotation process on the other hand, the external hydraulic control system provides hydraulic pressure to make it to produce less than 180 ° relatively rotate to two parts of tilt cylinder, and these two parts are relatively rotated the power that is produced act on respectively on the primary flywheel 13 and time flywheel 15 of double mass flywheel, realize the exciting process of twisting vibration, by the external hydraulic control system rotating hydraulic tilt cylinder is carried out pressure and flow control, realization is to the amplitude of twisting vibration and the control of frequency, be implemented in exciting and the control of carrying out twisting vibration in the rotation process by above method, thereby realize the twisting vibration of simulated engine under various operating modes.
Claims (6)
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2007101683354A CN100557400C (en) | 2007-11-13 | 2007-11-13 | Exciting Method and Exciter for Torsional Vibration of Dual-Mass Flywheel |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2007101683354A CN100557400C (en) | 2007-11-13 | 2007-11-13 | Exciting Method and Exciter for Torsional Vibration of Dual-Mass Flywheel |
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| CN101158620A CN101158620A (en) | 2008-04-09 |
| CN100557400C true CN100557400C (en) | 2009-11-04 |
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- 2007-11-13 CN CNB2007101683354A patent/CN100557400C/en not_active Expired - Fee Related
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