CN1299842C - Exciting method and vibration exciter for torsional damper performance test bed - Google Patents
Exciting method and vibration exciter for torsional damper performance test bed Download PDFInfo
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- CN1299842C CN1299842C CNB2004100252795A CN200410025279A CN1299842C CN 1299842 C CN1299842 C CN 1299842C CN B2004100252795 A CNB2004100252795 A CN B2004100252795A CN 200410025279 A CN200410025279 A CN 200410025279A CN 1299842 C CN1299842 C CN 1299842C
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- vibration
- vibrator
- plunger
- cam
- vibration exciter
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- 238000011056 performance test Methods 0.000 title claims abstract description 8
- 238000000034 method Methods 0.000 title abstract description 9
- 230000008878 coupling Effects 0.000 claims abstract description 20
- 238000010168 coupling process Methods 0.000 claims abstract description 20
- 238000005859 coupling reaction Methods 0.000 claims abstract description 20
- 230000010355 oscillation Effects 0.000 claims description 10
- 238000005553 drilling Methods 0.000 claims description 6
- 239000003921 oil Substances 0.000 claims description 6
- 239000010720 hydraulic oil Substances 0.000 claims description 4
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 10
- 239000006096 absorbing agent Substances 0.000 description 4
- 230000005284 excitation Effects 0.000 description 4
- 230000035939 shock Effects 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 238000009774 resonance method Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Testing Of Engines (AREA)
Abstract
The present invention discloses a vibration exciting method and a vibration exciter for torsional damper performance test beds. In the process of the rotation of a camshaft, the camshaft is periodically subjected to the pressure which is exerted on a cam by a hydraulic plunger pump. Consequently, vibration exciting moment is generated. The size of the vibration exciting moment is adjusted through hydraulic pressure. The change rule of vibration exciting force along with time is controlled by changing the shape line of the cam on a rotary shaft of the vibration exciter. A proper cam shape line can achieve the goal of fitting the vibration exciting moment of an actual engine. The vibration exciter is driven by a speed adjusting motor through an elastic coupling with large flexibility, which is favourable for protecting the motor. The output end of the vibration exciter is connected with the back end of a torsional vibration shaft through the coupling. In addition, the vibration exciter can also simulate torsional vibration conditions of four-stroke engines such as four-cylinder devices, eight-cylinder devices, etc. through the number of plunger pumps and simple changes of the arrangement of the plunger pumps on a shell body of the vibration exciter.
Description
Technical field
The present invention relates to a kind of torsional vibration damper performance test stand vibrator.
Background technology
Engine shaft is that intrinsic elasticity and the multiple humorous moment of torsion of periodicity that is applied to it make and produce twisting vibration and become inevitable.Along with internal combustion engine is continually strengthened, the flexible increase and the raising of rotating speed etc. are reversed by the lengthening of axle system, axle system, and the torsional vibration problems of axle system is become increasingly conspicuous.Solving the Torsional Vibration efficient ways is to engine assembling torsional vibration damper.The method for designing and the processing and manufacturing level of torsional vibration damper all can not guarantee its vibration damping usefulness fully at present.Therefore, exploitation torsional vibration damper performance test stand is imperative.The core of torsional vibration damper performance test stand is a torsional activator, the torsional vibration excitation moment that it should be able to altitude simulation engine crankshaft system.The present invention has realized this function with hydraulic cam mechanism.
The performance of torsional vibration damper can be carried out experimental test by two kinds of approach: one, shock absorber is carried out the engine pedestal experiment, and analyze its performance quality by a cover torsional oscillation testing equipment.This method directly utilizes engine to make vibration source, and condition of work is truer, but environmental disturbances noise complexity is unfavorable for signal analysis and processing, and the result of the test deviation is bigger, and can bring consequences such as fuel consume, air pollution, and the mounting or dismounting shock absorber is also very inconvenient; Its two, simulated test promptly designs an exciter test platform, in order to the axle system and the vibrational state thereof of simulated engine, can judge the performance of shock absorber by measuring relevant parameter.By contrast, the latter has the former incomparable superiority.
Complete torsional vibration damper testing stand is also few both at home and abroad at present.External state-of-the-art torsional vibration damper experimental facilities adopts driven by servomotor, and the high frequency pole-changing performance by servomotor evokes twisting vibration.This equipment and technology complexity costs an arm and a leg.The domestic existing testing stand is tested based on the resonance method principle, University Of Chongqing has developed engine silicon oil damper testing stand, the centrifugal force that this equipment utilization produces when neither the eccentric mass of balance gear rotates evokes twisting vibration, its installation accuracy requires high, and, can not detect the dynamic characteristic of shock absorber because the torsional oscillation axle is only turned round and do not changeed.Domestic have some rotary damper test stands in addition, and all the driving torque difference of driving torque that produces because of vibrator and actual engine is too big, and test effect is not good.
Summary of the invention
In order to have solved the problems referred to above, the object of the present invention is to provide a kind of torsional vibration damper performance test stand vibrator that produces driving torque by cam and hydraulic coupling.
The technical solution adopted for the present invention to solve the technical problems is:
One, excitation method
Utilize in the camshaft rotation process, periodically be subjected to hydraulic planger pump and put on pressure on the cam, thereby produce driving torque.
Two, vibrator
Cam cooperates with the vibrator rotating shaft by flat key, the vibrator rotating shaft is bearing on the vibrator housing by the single-row tapered roller bearing at two ends respectively, plunger one end center drilling, the other end has groove, the plunger that 2~4 centres have a groove cooperates with separately plunges pump body respectively, in each plunger one end center drilling and between the plunges pump body stage clip is housed, in each the plunger other end groove single-row radial ball bearing is housed, 2~4 plunges pump bodies are distributed on the vibrator housing, and use bolting, advancing that oil circuit is connected all is housed on each plunges pump body, go out the hydraulic oil pipe joint, single-row radial ball bearing contacts with cam face, the input of vibrator rotating shaft is equipped with the big flexibility yielding coupling of being made up of two yielding coupling dishes, the output of vibrator rotating shaft links to each other with the torsional oscillation axle by shaft coupling, and vibrator housing base is installed on the body.
The useful effect that the present invention has is: vibrator of the present invention, simulate the exciting rule of six cylinder four-stroke engines: bent axle whenever takes two turns, and is subjected to exciting six times.For reduce and cam between friction, use roller follower.For lubricated cam and guarantee the cleaning of their working environments, camshaft is sealed in the housing, and adopts the flooding system lubrication mode.The size of driving torque is adjusted by hydraulic pressure, and rule is by changing the shape line traffic control of vibrator rotating shaft overhead cam over time for exciting force, and suitable cam profile can reach the purpose of match actual engine driving torque.Vibrator is driven by big flexibility yielding coupling by buncher, and this helps the protection to motor itself.The output of vibrator links to each other with the torsional oscillation shaft rear end by shaft coupling.In addition, by the simple change to plunger displacement pump number and its layout on the vibrator housing, this vibrator also can be simulated the torsional oscillation situation of four-stroke engine such as four cylinders, eight cylinders.
Description of drawings
Fig. 1 is a structural principle schematic diagram of the present invention;
Fig. 2 is a left view of the present invention;
Fig. 3 is the enlarged drawing of plunger;
Fig. 4 is the plunges pump body enlarged drawing.
Among the figure: 1, body, 2, plunges pump body, 3, stage clip, 4, plunger, 5, single-row radial ball bearing, 6, straight pin, 7, the vibrator housing, 8, cam, 9, the vibrator rotating shaft, 10, yielding coupling dish bullet, 11, property shaft coupling dish, 12, the hydraulic oil pipe joint
The specific embodiment
Excitation method of the present invention is to utilize in the camshaft rotation process, periodically is subjected to hydraulic planger pump and puts on pressure on the cam, thereby produce driving torque.
As Fig. 1, Fig. 2, Fig. 3, shown in Figure 4, the present invention includes cam 8 cooperates with vibrator rotating shaft 9 by flat key, vibrator rotating shaft 9 is bearing on the vibrator housing 7 by the single-row tapered roller bearing at two ends respectively, plunger 4 one end center drillings 4.1, the other end has groove 4.2, the plunger 4 that three centres have a groove 4.2 cooperates with separately plunges pump body 2 respectively, in each plunger 4 one end center drillings 4.1 and between the plunges pump body stage clip 3 is housed, in each plunger 4 other end groove 4.3 single-row radial ball bearing 5 is housed, straight pin 6 passes plunger 4 groove lateral aperture 4.3, single-row radial ball bearing 5 holes are single-row radial ball bearing 5 fixedly, three plunges pump bodies 2 are distributed on the vibrator housing 7, and use bolting, advancing that oil circuit is connected all is housed on each plunges pump body 2, go out hydraulic oil pipe joint 12, single-row radial ball bearing 5 contacts with cam 8 surfaces, the input of vibrator rotating shaft 9 is equipped with by two yielding coupling dishes 10, the 11 big flexibility yielding couplings of forming, the output of vibrator rotating shaft 9 links to each other with the torsional oscillation axle by shaft coupling, and vibrator housing 7 bases are installed on the body 1.
During work, motor is two tie-plates of shaft coupling by big flexibility yielding coupling 10,11, they cooperate the rotating shaft of driving vibrator respectively with motor reel and vibrator rotating shaft, vibrator rotating shaft 9 drives cam 8 and rotates together, and the output of vibrator rotating shaft 9 links to each other with the torsional oscillation axle by shaft coupling.When in the hydraulic pressure oil duct oil pressure being arranged, moving two circles of cam revolution are subjected to six excitations, and promptly hydraulic coupling is six works done by plunger displacement pump to the torsional oscillation axle, for the twisting vibration of torsional oscillation axle provides energy.
Claims (1)
1, a kind of torsional vibration damper performance test stand vibrator, it is characterized in that: cam (8) cooperates with vibrator rotating shaft (9) by flat key, vibrator rotating shaft (9) is bearing on the vibrator housing (7) by the single-row tapered roller bearing at two ends respectively, plunger (4) one end center drillings (4.1), the other end has groove (4.2), the plunger (4) that 2~4 centres have groove (4.2) cooperates with separately plunges pump body (2) respectively, in each plunger (4) one end center drilling (4.1) and between the plunges pump body stage clip (3) is housed, single-row radial ball bearing (5) is housed in each plunger (4) other end groove (4.2), 2~4 plunges pump bodies (2) are distributed on the vibrator housing (7), and use bolting, advancing that oil circuit is connected all is housed on each plunges pump body (2), go out hydraulic oil pipe joint (12), single-row radial ball bearing (5) contacts with cam (8) surface, the input of vibrator rotating shaft (9) is equipped with by two yielding coupling dishes (10,11) the big flexibility yielding coupling of Zu Chenging, the output of vibrator rotating shaft (9) links to each other with the torsional oscillation axle by shaft coupling, and vibrator housing (7) base is installed on the body (1).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CNB2004100252795A CN1299842C (en) | 2004-06-11 | 2004-06-11 | Exciting method and vibration exciter for torsional damper performance test bed |
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CNB2004100252795A CN1299842C (en) | 2004-06-11 | 2004-06-11 | Exciting method and vibration exciter for torsional damper performance test bed |
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CN1583288A CN1583288A (en) | 2005-02-23 |
CN1299842C true CN1299842C (en) | 2007-02-14 |
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CNB2004100252795A Expired - Fee Related CN1299842C (en) | 2004-06-11 | 2004-06-11 | Exciting method and vibration exciter for torsional damper performance test bed |
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Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100374216C (en) * | 2005-09-21 | 2008-03-12 | 天津大学 | Rotor axial system torsional activator |
CN104646264B (en) * | 2015-02-11 | 2018-01-09 | 曲绍毅 | A kind of torsional oscillation generating means |
CN106807616A (en) * | 2015-11-30 | 2017-06-09 | 衡阳双雁运输机械有限公司 | A kind of vibrator |
CN107165898B (en) * | 2017-06-01 | 2018-07-24 | 大连理工大学 | A kind of mechanical AC hydraulic complexity exciting waveform occurs and control device |
CN108772780B (en) * | 2018-06-08 | 2023-05-23 | 太原理工大学 | Horizontal excitation polishing device and method for complex cavity of light alloy casting |
CN109332142B (en) * | 2018-11-23 | 2023-11-24 | 河南理工大学 | Low-frequency torsional vibration workbench |
CN110939631B (en) * | 2019-12-26 | 2021-07-02 | 长安大学 | Oil-free hydraulic vibration exciter with adjustable frequency and amplitude and adjusting method thereof |
CN112081798B (en) * | 2020-09-08 | 2022-01-11 | 武汉理工大学 | Vortex ring generator based on centrifugation and electromagnetic ejection |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5749838A (en) * | 1980-09-10 | 1982-03-24 | Mitsubishi Electric Corp | Vibration load applying device |
CN1071229A (en) * | 1991-09-21 | 1993-04-21 | 52935部队陆岩企业集团 | Pulsive resonance pulling machine |
FR2700811A1 (en) * | 1993-01-28 | 1994-07-29 | Sta Controle | Device for generating a variable pressure within a liquid |
CN2699272Y (en) * | 2004-05-20 | 2005-05-11 | 浙江大学 | Exciting equipment for torsional vibration damper performance testing stand |
-
2004
- 2004-06-11 CN CNB2004100252795A patent/CN1299842C/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5749838A (en) * | 1980-09-10 | 1982-03-24 | Mitsubishi Electric Corp | Vibration load applying device |
CN1071229A (en) * | 1991-09-21 | 1993-04-21 | 52935部队陆岩企业集团 | Pulsive resonance pulling machine |
FR2700811A1 (en) * | 1993-01-28 | 1994-07-29 | Sta Controle | Device for generating a variable pressure within a liquid |
CN2699272Y (en) * | 2004-05-20 | 2005-05-11 | 浙江大学 | Exciting equipment for torsional vibration damper performance testing stand |
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CN1583288A (en) | 2005-02-23 |
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Granted publication date: 20070214 Termination date: 20110611 |