CN103616158B - Dynamic ripple wall cylinder test device - Google Patents
Dynamic ripple wall cylinder test device Download PDFInfo
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- CN103616158B CN103616158B CN201310528698.XA CN201310528698A CN103616158B CN 103616158 B CN103616158 B CN 103616158B CN 201310528698 A CN201310528698 A CN 201310528698A CN 103616158 B CN103616158 B CN 103616158B
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Abstract
The invention discloses a kind of dynamic ripple wall cylinder test device, comprise cylinder, actuating unit, gear train and wave mechanism, actuating unit is arranged on cylinder upper end, and gear train is vertically set in cylinder, and actuating unit output terminal is connected with gear train upper end; The wave mechanism coaxially arranged with gear train is arranged in cylinder, comprise wheel that two fluctuate, the wheel that fluctuates under two, upload moving axis, lower drive shaft, many push rods, many fluctuation bars and elasticity coverings, upload moving axis and lower drive shaft is vertically set in cylinder, the outer contour of upper fluctuation wheel or lower fluctuation wheel is the closed ring curve of continuous print waveform Wave crest and wave trough composition, many push rods are each passed through push rod guide hole corresponding on cylindrical wall, and many fluctuation bars are fixedly connected with elasticity covering medial surface.The present invention reaches the object simulating wave motion by simple gear train, cost is lower, stable and reliable operation.
Description
Technical field
The present invention relates to a kind of experimental provision for studying dynamic wave wall peripheral flow, to obtain the inhibition of wave wall to vortex-induced vibration and resistance, belonging to inland river and oceanographic engineering simulating experiment technique field.
Background technology
In inland river and oceanographic engineering, there is numerous cylindrical structure under water, as ocean platform pillar, harbour pilum, bridge pier etc., these environmental loads that column bears under water mainly contain wind, wave, stream, ice and seismic (seismal etc., wherein, wave and current are most important load, column tail can be made under certain flow velocity to produce periodic vortex shedding, especially when the natural frequency of column and the frequency of vortex shedding close to time, just create Vortex-excited vibration phenomenon, thus cause the fatigue damage of column, have a strong impact on serviceable life and the serviceability of column, even bring serious engineering and environmental accident.
At present also theoretical research stage is in for the impact of motion wave wall cylinder on vortex-induced vibration and resistance, also there is no experimental verification, one is needed to simulate wave motion, and can different parameters be regulated, the dynamic ripple wall cylinder test device of checking numerical simulation result, for practical engineering application provides guidance and foundation.
Summary of the invention
The object of this invention is to provide a kind ofly to simulate accurately, be convenient to manufacture, the dynamic ripple wall cylinder test device of lower, easy for installation, the adaptable active suppression vortex-induced vibration of cost and drag reduction, realize the experimental study to dynamic ripple wall peripheral flow.
The present invention is achieved by the following technical programs:
A kind of dynamic ripple wall cylinder test device, comprise cylinder, actuating unit, gear train and wave mechanism, described actuating unit is arranged on cylinder upper end, and described gear train is vertically set in cylinder, and actuating unit output terminal is connected with gear train upper end; The wave mechanism coaxially arranged with gear train is arranged in cylinder, comprise cylinder upper cover, cylinder lower cover, wheel that two fluctuate, the wheel that fluctuates under two, upload moving axis, lower drive shaft, many push rods, many fluctuation bars, multiple returning springs and contain the elasticity covering of partial cylinder, cylinder upper cover, cylinder lower cover are fixed on the top and bottom of cylinder, upload moving axis and the coaxial heart of lower drive shaft is vertically set in cylinder, upload moving axis upper end, lower drive shaft lower end is supported in cylinder upper cover and cylinder lower cover respectively by head bearing, lower bearing; Upper fluctuation wheel outer contour, lower fluctuation wheel outer contour are continuous print waveform closed ring curve, two upper fluctuation wheels are fixed on and upload moving axis bottom, the wheel that fluctuates under two is fixed in the middle part of lower drive shaft, the Wave crest and wave trough same-phase correspondence of taking turns and two upper fluctuations are taken turns or fluctuated under two; Cylindrical wall and two fluctuate take turns, the outer contour corresponding position of taking turns of fluctuating under two, up and down uniform respectively with upper fluctuate take turns, lower fluctuation take turns multiple push rod guide holes that corresponding number arrange circumferential fan-shaped distribution in 90 °; Wherein, cylindrical wall respectively with two on fluctuate take turns outline or two under fluctuate and take turns outline corresponding position, many push rods are each passed through push rod guide hole corresponding on cylindrical wall, push rod one end is resisted against on fluctuation wheel outline or lower fluctuation wheel outline, bar is vertical is fixedly connected with for the push rod other end and fluctuation, many fluctuation bars are fixedly connected with elasticity covering medial surface, and the returning spring being positioned at cylindrical wall is enclosed within push rod.
Object of the present invention can also be realized further by following technical measures.
Aforesaid dynamic ripple wall cylinder test device, wherein upper with two fluctuate take turns the two upper phase angle [alpha] of arranging multiple push rod guide hole groups of fan-shaped distribution in 90 ° corresponding to outline with two under the two lower phasing degree β sums of arranging multiple push rod guide hole groups of fan-shaped distribution in 90 ° of taking turns outline corresponding that fluctuate be 180 °.
Aforesaid dynamic ripple wall cylinder test device, wherein said push rod curves the flute profile connected into by two sections of horizon bars and one section of vertical rod, and described two sections of horizon bars are each passed through the corresponding push rod guide hole of two rows and bar is vertical is fixedly connected with fluctuation; Described returning spring is enclosed within horizon bar.
Aforesaid dynamic ripple wall cylinder test device, wherein said actuating unit comprises drive motor, motor fixing seat and fixed mount and anchor ear, and drive motor one end is fixed in motor fixing seat, and initiatively small conical gear is vertically fixed on drive motor axle; Described fixed mount is made up of the angle steel that two be arranged in parallel, and motor fixing seat lower end is fixed on an angle steel; Anchor ear two ends are separately fixed at inside fixed mount, and are fixed on cylinder upper end by securing member; Fixed mount two ends are fixed on the upside of experimental trough respectively by holder.
Aforesaid dynamic ripple wall cylinder test device, wherein said gear train comprises initiatively small conical gear, driven large conical gear, the first conical gear, the second conical gear, two gap bridge drive cone gears and transverse axis, initiatively small conical gear is vertically fixed on drive motor axle, driven large conical gear is fixed on uploads moving axis upper end, first conical gear is fixed on uploads moving axis lower end, is positioned under two upper fluctuation wheels; Second conical gear is fixed on lower drive shaft upper end, under being positioned at two on fluctuation wheel, two gap bridge drive cone gear faces are relatively bearing in the middle part of transverse axis respectively by bearing, and described transverse axis two ends are inlaid in two of inside cylinder wall to axial on gain respectively.
Aforesaid dynamic ripple wall cylinder test device, the driving-chain of wherein said gear train is as follows: initiatively------the second conical gear engages the first conical gear---two gap bridge drive cone gears---driven large conical gear small conical gear in turn, wherein, the first conical gear, two gap bridge drive cone gears and the second conical gear joggled lap joint are orthogonal.
Aforesaid dynamic ripple wall cylinder test device, wherein cover the coated half cylinder of elasticity covering circumference of all fluctuation bars, elasticity covering upper and lower sides is separately fixed on cylinder.
Beneficial effect of the present invention is as follows:
1, the present invention well simulates motion wave wall cylinder, can realize the experimental study of motion wave wall cylinder.
2, the present invention only need control motor speed and can change wave wall velocity of wave motion, to adapt to different speed of incoming flow, obtains the experimental data under parameters, more fully can study the impact of wave wall on peripheral flow, provides guidance and foundation to engineer applied.
3, the outline of upper fluctuation wheel of the present invention or lower fluctuation wheel is continuous print waveform closed ring curve, when upper fluctuation wheel or lower fluctuation wheel rotate, the several push rods of crest rising portion being resisted against fluctuation wheel promote to fluctuate accordingly successively, and bar is outer gradually to be moved, and makes outer gradually, elasticity covering.Otherwise, several push rods at fluctuation wheel trough place are retracted in along with being resetted by returning spring, gradually pull in fluctuation bar to move and make elasticity covering indent gradually, many push rods and Duo Gen fluctuate bar aggregate motion under, elasticity covering moves around half cylinder outer peripheral face undulate, and because the first conical gear and the second conical gear turn on the contrary, waveform moves to rear stagnation point from cylinder both sides, form symmetric motion wave wall.The present invention reaches the object simulating wave motion by simple gear train, cost is lower, stable and reliable operation.
Advantage and disadvantage of the present invention, by for illustration and explanation for the non-limitative illustration passing through preferred embodiment below, these embodiments, only provide as an example with reference to accompanying drawing.
Accompanying drawing explanation
Fig. 1 is perspective view of the present invention;
Fig. 2 is that the A of Fig. 1 is to zoomed-in view;
Fig. 3 is that the B of Fig. 1 is to zoomed-in view;
Fig. 4 is the front view of cylinder;
Fig. 5 is the A-A cut-open view of Fig. 4;
Fig. 6 is the B-B cut-open view of Fig. 4;
Fig. 7 is the C-C amplification view of Fig. 2;
Fig. 8 is the D-D amplification view of Fig. 2;
Fig. 9 is that in Fig. 3, E-E rotates amplification view;
Figure 10 is that in Fig. 3, F-F rotates amplification view.
Embodiment
Be described further below in conjunction with drawings and Examples.
As shown in Fig. 1 ~ Figure 10, the present invention includes cylinder 1, actuating unit 2, gear train 3 and wave mechanism 4, actuating unit 2 is arranged on cylinder 1 upper end, gear train 3 is vertically set in cylinder 1, be arranged in cylinder 1 with the coaxial wave mechanism 4 arranged of gear train 3, comprise cylinder upper cover 11, cylinder lower cover 12, two upper fluctuation wheels 41, fluctuate under two wheel 42, upload moving axis 43, lower drive shaft 44, many push rods 45, many fluctuation bars 46, the elasticity covering 48 of returning spring 47 and containing partial cylinder, cylinder upper cover 11, cylinder lower cover 12 is threaded connection and is separately fixed at the upper of cylinder 1, lower end, uploading the coaxial heart of moving axis 43 and lower drive shaft 44 is vertically set in cylinder 1, upload moving axis 43 upper end, lower drive shaft 44 lower end is respectively by head bearing 49, lower bearing 410 is supported in cylinder upper cover 11 and cylinder lower cover 12.The wheel 42 that fluctuates under two upper fluctuation 41, two, wheels is all fixedly connected with corresponding uploading in the middle part of moving axis 43 bottom, lower drive shaft 44 by interference fit.Upper fluctuation wheel 41 outer contour, lower fluctuation take turns the closed ring curve that 42 outlines are continuous print Wave crest and wave trough composition, and the Wave crest and wave trough of the wheel 42 that fluctuates under two upper fluctuate wheels 41 or two is corresponding.Cylindrical wall 101 and two to fluctuate the outer contour corresponding position of wheel 42 of fluctuating under 41, two, wheel, the four multiple push rod guide holes 102 arranging circumferential fan-shaped distribution in 90 ° that the wheel 42 that fluctuates under uniform 41, two, the wheel that fluctuate upper with two respectively is up and down corresponding; Wherein go up two rows or the vertical equidistant setting of the lower two multiple push rod guide hole 102 of row, many push rods 45 are each passed through push rod guide hole 102 corresponding on cylindrical wall 101, push rod 45 one end is resisted against fluctuation wheel 41 outline or lower fluctuation is taken turns on 42 outlines, bar 46 is vertical is fixedly connected with for the other end and fluctuation, is bonded on elasticity covering 48 medial surface outside many fluctuation bars 46; The returning spring 47 being positioned at cylindrical wall 101 is enclosed within push rod 45.Push rod 45 curves the flute profile connected into by two sections of horizon bars 451 and one section of vertical rod 452, and two sections of horizon bars 451 are each passed through two rows multiple push rod guide hole 102 and fluctuation bar 46 is vertical and are fixedly connected with.Returning spring 47 is enclosed within horizon bar 451, and its one end is resisted against on cylindrical wall 101 medial surface, and the other end is resisted against the junction of horizon bar 451 and vertical rod 452, and returning spring 47 resets force pushing mandril 45 back to the trough of taking turns that fluctuates.
As shown in Figure 5 and Figure 6, the two lower phasing degree β sums of arranging multiple push rod guide hole groups 102 of fan-shaped distribution in 90 ° that the upper phase angle [alpha] of multiple push rod guide hole groups 102 of the two rows fan-shaped distribution in 90 ° that two upper fluctuation wheel 41 outlines are corresponding is corresponding with wheel 42 outline that fluctuates under two are 180 °.Cover the coated half cylinder 1 of elasticity covering 48 circumference of all fluctuation bars 46, elasticity covering 48 upper and lower sides is separately fixed on cylinder 1.
As shown in Fig. 1 ~ Fig. 3, actuating unit 2 comprises drive motor 21, motor fixing seat 22, fixed mount 23 and anchor ear 24, drive motor 21 adopts the stepper motor of adjustable speed, drive motor 21 end face is fixed in motor fixing seat 22, fixed mount 23 is made up of two angle steel be arranged in parallel 231, every root angle steel 231 two ends have chute 232, and motor fixing seat 22 lower end is fixed on an angle steel 231 by securing member.Two halves hoop body 241 two ends of anchor ear 24 are separately fixed at inside fixed mount 23, and are strained and fixed in cylinder 1 upper end by stretching screw 25; Fixed mount 23 two ends are fixed on the upside of experimental trough 5 respectively by holder 26.Chute 232 plays and can regulate cylinder 1 lateral attitude adapt to the effect of different in width tank in experimental trough 5.
As shown in Fig. 1, Fig. 9 and Figure 10, gear train 3 comprises initiatively small conical gear 31, driven large conical gear 32, first conical gear 33, second conical gear 34, two gap bridge drive cone gears 35 and transverse axis 36, initiatively small conical gear 31 is vertically fixed on drive motor axle 211, driven large conical gear 32 is fixed on uploads moving axis 43 upper end, first conical gear 33 is fixed on uploads moving axis 43 lower end, is positioned under two upper fluctuation wheels 41; Second conical gear 34 is fixed on lower drive shaft 44 upper end, on the wheel 42 that fluctuates under being positioned at two.Two gap bridge drive cone gear 35 end faces are relatively bearing in the middle part of transverse axis 36 respectively by bearing 37, and transverse axis 36 two ends are inlaid in two inside cylindrical wall 101 to axial on gain 103 respectively.The driving-chain of gear train 3 is as follows: initiatively------the second conical gear 34 engages the first conical gear 33---two gap bridge drive cone gears 35---driven large conical gear 32 small conical gear 31 in turn, wherein, first conical gear 33, two gap bridge drive cone gear 35 and the second conical gear 34 joggled lap joint orthogonal, the first conical gear 33 and the second conical gear 34 turn on the contrary.
Drive motor 21 drives initiatively small conical gear 31 to rotate, by with the engaging of driven large conical gear 32, drive gap bridge drive cone gear 35, second conical gear 34 to rotate thereupon, thus drive and upload moving axis 43, lower drive shaft 44 and rotate with the wheel 42 that fluctuates under two upper fluctuation 41, two, wheels separately, the wheel 42 that fluctuates under two turns to contrary with two wheels 41 that above fluctuate.Two upper fluctuation wheels 41 with two under fluctuate wheel 42 rotate time, promote many push rods 45 by the fluctuation wheel rotated and promote the periodically outer top of push rod 45 along fluctuation wheel Wave crest and wave trough and inside contract, be fixed on the elasticity covering 48 fluctuated on bar 46 and move thereupon.Under the aggregate motion of many push rods 45 with fluctuation bar 46, elasticity covering 48 undulate rises and falls, and owing to uploading the forward and reverse turning effort of moving axis 43, lower drive shaft 44, waveform moves to rear stagnation point from cylinder 1 both sides, forms symmetric motion wave wall.The rotating speed that only need change drive motor 21 can change the movement velocity of wave wall, also the wave number (wavelength) of wheel 42, wave amplitude is fluctuated under can changing two upper fluctuation 41, two, wheels to arrange more experiment parameter, obtain more preferably experimental result, provide guidance and foundation to practical engineering application.
In addition to the implementation, the present invention can also have other embodiments, and all employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection domain of application claims.
Claims (7)
1. a dynamic ripple wall cylinder test device, it is characterized in that, comprise cylinder, actuating unit, gear train and wave mechanism, described actuating unit is arranged on cylinder upper end, described gear train is vertically set in cylinder, and actuating unit output terminal is connected with gear train upper end; The wave mechanism coaxially arranged with gear train is arranged in cylinder, comprise cylinder upper cover, cylinder lower cover, wheel that two fluctuate, the wheel that fluctuates under two, upload moving axis, lower drive shaft, many push rods, many fluctuation bars, multiple returning springs and contain the elasticity covering of partial cylinder, cylinder upper cover, cylinder lower cover are separately fixed at the top and bottom of cylinder, upload moving axis and the coaxial heart of lower drive shaft is vertically set in cylinder, upload moving axis upper end, lower drive shaft lower end is supported in cylinder upper cover and cylinder lower cover respectively by head bearing, lower bearing; Upper fluctuation wheel outer contour, lower fluctuation wheel outer contour are continuous print waveform closed ring curve, two upper fluctuation wheels are fixed on and upload moving axis bottom, the wheel that fluctuates under two is fixed in the middle part of lower drive shaft, the Wave crest and wave trough same-phase correspondence of taking turns and two upper fluctuations are taken turns or fluctuated under two; Cylindrical wall and two fluctuate take turns, the outer contour corresponding position of taking turns of fluctuating under two, up and down uniform respectively with upper fluctuate take turns, lower fluctuation take turns multiple push rod guide holes that corresponding number arrange circumferential fan-shaped distribution in 90 °; Cylindrical wall respectively with two on fluctuate take turns outline or two under fluctuate and take turns outline corresponding position, many push rods are each passed through push rod guide hole corresponding on cylindrical wall, push rod one end is resisted against on fluctuation wheel outline or lower fluctuation wheel outline, bar is vertical is fixedly connected with for the push rod other end and fluctuation, many fluctuation bars are fixedly connected with elasticity covering medial surface, and the returning spring being positioned at cylindrical wall is enclosed within push rod.
2. dynamic ripple wall cylinder test device according to claim 1, it is characterized in that, with two upper fluctuate take turns the two upper phase angle [alpha] of arranging multiple push rod guide hole groups of fan-shaped distribution in 90 ° corresponding to outline with two under the two lower phasing degree β sums of arranging multiple push rod guide hole groups of fan-shaped distribution in 90 ° of taking turns outline corresponding that fluctuate be 180 °.
3. dynamic ripple wall cylinder test device according to claim 1, it is characterized in that, described push rod curves the flute profile connected into by two sections of horizon bars and one section of vertical rod, and described two sections of horizon bars are each passed through two rows multiple push rod guide hole, and bar is vertical is fixedly connected with fluctuation; Described returning spring is enclosed within horizon bar.
4. dynamic ripple wall cylinder test device according to claim 1, it is characterized in that, described actuating unit comprises drive motor, motor fixing seat and fixed mount and anchor ear, drive motor one end is fixed in motor fixing seat, described fixed mount is made up of the angle steel that two be arranged in parallel, and motor fixing seat lower end is fixed on an angle steel; Anchor ear two ends are separately fixed at inside fixed mount, and are fixed on cylinder upper end by securing member; Fixed mount two ends are fixed on the upside of experimental trough respectively by holder.
5. dynamic ripple wall cylinder test device according to claim 1, it is characterized in that, described gear train comprises initiatively small conical gear, driven large conical gear, the first conical gear, the second conical gear, two gap bridge drive cone gears and transverse axis, initiatively small conical gear is vertically fixed on drive motor axle, driven large conical gear is fixed on uploads moving axis upper end, first conical gear is fixed on uploads moving axis lower end, is positioned under two upper fluctuation wheels; Second conical gear is fixed on lower drive shaft upper end, under being positioned at two on fluctuation wheel, two gap bridge drive cone gear faces are relatively bearing in the middle part of transverse axis respectively by bearing, and described transverse axis two ends are inlaid in two of inside cylinder wall to axial on gain respectively.
6. dynamic ripple wall cylinder test device according to claim 5, it is characterized in that, the driving-chain of described gear train is as follows: initiatively small conical gear-driven large conical gear-the first conical gear-two gap bridge drive cone gear-the second conical gear engages in turn, wherein, the first conical gear, two gap bridge drive cone gears and the second conical gear joggled lap joint are orthogonal.
7. dynamic ripple wall cylinder test device according to claim 1, is characterized in that, cover the coated half cylinder of elasticity covering circumference of all fluctuation bars, elasticity covering upper and lower sides is separately fixed on cylinder.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310528698.XA CN103616158B (en) | 2013-11-01 | 2013-11-01 | Dynamic ripple wall cylinder test device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310528698.XA CN103616158B (en) | 2013-11-01 | 2013-11-01 | Dynamic ripple wall cylinder test device |
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| CN103616158A CN103616158A (en) | 2014-03-05 |
| CN103616158B true CN103616158B (en) | 2015-08-05 |
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|---|---|---|---|---|
| CN1055868A (en) * | 1990-03-15 | 1991-11-06 | Wow股份有限公司 | Making in the liquid especially, liquid level produces the device of motion |
| CN1800802A (en) * | 2006-01-11 | 2006-07-12 | 浙江大学 | Pressure adjustable and external drum rotary rheometer with visible concentric drums |
| CN102072805A (en) * | 2010-11-19 | 2011-05-25 | 上海交通大学 | Device for testing vortex-induced vibration and rotation of inclined riser under cascade shearing flow |
| US7956326B1 (en) * | 2002-06-14 | 2011-06-07 | Enertechnix, Inc. | Infrared imaging sensor |
| CN202204661U (en) * | 2011-09-23 | 2012-04-25 | 安徽省煤田地质局水文勘探队 | Device for simulating pipeline water inrush grouting treatment model, and testing system with device |
| CN203037443U (en) * | 2012-12-27 | 2013-07-03 | 大连理工大学 | Buoyancy pendulum wave energy device model |
-
2013
- 2013-11-01 CN CN201310528698.XA patent/CN103616158B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1055868A (en) * | 1990-03-15 | 1991-11-06 | Wow股份有限公司 | Making in the liquid especially, liquid level produces the device of motion |
| US7956326B1 (en) * | 2002-06-14 | 2011-06-07 | Enertechnix, Inc. | Infrared imaging sensor |
| CN1800802A (en) * | 2006-01-11 | 2006-07-12 | 浙江大学 | Pressure adjustable and external drum rotary rheometer with visible concentric drums |
| CN102072805A (en) * | 2010-11-19 | 2011-05-25 | 上海交通大学 | Device for testing vortex-induced vibration and rotation of inclined riser under cascade shearing flow |
| CN202204661U (en) * | 2011-09-23 | 2012-04-25 | 安徽省煤田地质局水文勘探队 | Device for simulating pipeline water inrush grouting treatment model, and testing system with device |
| CN203037443U (en) * | 2012-12-27 | 2013-07-03 | 大连理工大学 | Buoyancy pendulum wave energy device model |
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Effective date of registration: 20171117 Address after: Fangchenggang city 535500 the Guangxi Zhuang Autonomous Region Shangsi County seven villages Luo Tun Patentee after: Guangxi state farms Chang Ling farm Address before: 212003 Zhenjiang City, Jiangsu province dream Creek Road, No. 2 Patentee before: Jiangsu University of Science and Technology |
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