CN103257039A - Arrangement for component test stand - Google Patents
Arrangement for component test stand Download PDFInfo
- Publication number
- CN103257039A CN103257039A CN2012105990367A CN201210599036A CN103257039A CN 103257039 A CN103257039 A CN 103257039A CN 2012105990367 A CN2012105990367 A CN 2012105990367A CN 201210599036 A CN201210599036 A CN 201210599036A CN 103257039 A CN103257039 A CN 103257039A
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- Prior art keywords
- bearing
- axle
- damping
- equipment
- drive unit
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/04—Bearings
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/04—Bearings
- G01M13/045—Acoustic or vibration analysis
Abstract
The arrangement (10) comprises a shaft (12) for transferring a rotational force from a rotational drive to a component to be tested, where the shaft is rotatably supported in a component side bearing (14) and a drive side bearing (16). The component side bearing is connected with a damping system (22). The arrangement for component stand can damp unbalanced force, and thus components of the component test stand can be protected.
Description
Technical field
The present invention relates to equipment a kind of feature according to claim 1, that be used for the component test platform, it comprises that one is used for transmitting the axle of rotating force to the member of examine from rotating driving device.
Background technology
Comprising one, to be used for transmitting rotating force from rotating driving device for example open by document DE 1 125 206 to equipment axle, that be used for the component test platform on the member of examine.A kind of component test platform is disclosed in the document, wherein, sample one evacuated, apply as required in the receptacle of protective bulkhead lining up to the centrifugation power that surpasses break limit.Here can use a small air turbine as actuating unit, it is arranged in the cover.At this, the cover of receptacle is rigidly fixed on the crossbeam, also settles air turbine and all intake lines and output pipe in this crossbeam.A thin driving shaft stretches out from the housing that passes this cover of air turbine.Rotor is suspended on this driving shaft, and the free axle journal of rotor enters and is bearing in the bearing thus with little axis of pitch freedom of motion and frictional damping when lifting a canned piece to off-position.
The fragment that for example can split suddenly owing to the sample of examine in this kind equipment produces unexpected uneven at sample to be rotated.Make the diameter of axle especially relatively for example act on the bearing of rotating driving device to the power of the impact type of the burst of orientation thus or act on the bearing of sample.In the case disadvantageously; power by such effect can be on corresponding bearing or in rotating driving device or a clutch coupling that is attached thereto or a gearing generation damage that is attached thereto; this may cause repairing time and stop time, because bearing bridge must be changed after imbalance occurring termly owing to lacking protection.Except this damage of bearings, axle self also can be crooked, can cause the replacing of axle like this owing to too high plastic deformation.
Therefore, in the known scheme of prior art disadvantageously: after some tests, must change bearing, perhaps only can be with little out-of-balance force test sample.
Summary of the invention
Therefore, task of the present invention is, realizes a kind of equipment for the component test platform, can reduce or prevent the member of damaged member testing table by this equipment.
According to the present invention, this task solves by equipment feature, that be used for the component test platform with claim 1.Preferred configuration of the present invention provides in the dependent claims.
According to of the present invention for the component test platform, comprise that especially for the equipment of centrifuge test platform one is used for transmitting the axle of rotating force to the member of examine from rotating driving device.Here, this axle is in member side is rotatably supported at least one bearing, and this external drive unit side is rotatably supported at least one bearing.The drive unit side especially is illustrated in a side or the end of axle here, and this side is for example directly or by other member, for example be connected with rotating driving device by gearing or similar device.Correspondingly, member side especially can be represented a side or the end of axle, and this is connected or can be connected with it with the member of examine by described end.
Here, the centrifuge test platform for example especially can be a kind of testing table, and wherein, sample is accelerated to its rotating speed that breaks.Here that break apart each other or broken sample produces out-of-balance force at axle mostly.Under the very little situation of out-of-balance force, out-of-balance force can be held receipts by the bearing of routine.
Yet in order to deal with the out-of-balance force that may occur in the revolution that produces and the shaft diameter in the centrifuge test platform, the bearing of member side is connected with a damping system.By this damping system, can the damping axle or the deflection that is caused by out-of-balance force of bearing.Therefore, can react on this situation by damping system, that is, the power that produces when breaking event often can not be held receipts by corresponding bearing separately.By bearing being connected, can intercepting and capturing the bearing deflection that causes owing to out-of-balance force with damping system, and can absorb described power by damping.Therefore, can stop axle in bearing, to act on and prevent thus bearing breakage or damage fiercely.In addition, can prevent the damage of axle.At this, damping system especially can so be constructed or be arranged, and makes this system can be partly implemented in out-of-balance force at least and can act on damping on each direction on the axle.
Therefore, can realize by damping system is set, power no longer since emergent imbalance and unrestrictedly act on this equipment member, as bearing or the axle from one's body.This equipment, for example comprise that member rotating driving device, axle and examine or to be rotated then unloads by damping.Equipment be can protect thus and damage and consequent stop time prevented.
At this, the structure by defined damping system can act on the equipment or the maximum force on each member of equipment for desirable application with for employed material customization.Can limit the power that can act on the element of installation definitely thus.
Therefore; but a bearing that connects with damping system especially provides a kind of as reaching for the bending force simple fit and uneven relevant protecting component; this protecting component can be applicable in the equipment with element rotation or that reverse, high load or the power that can expect or may occur occurring in the impact mode at run duration in these elements.The application of this kind equipment is used in the bearing unit of protection the said equipment under the situation of too high impact type load.
In addition, the favourable part of equipment of the present invention is: for example with the situation of the size of rotatable member or the big shaft diameter relevant with desirable power under, also can satisfy the rotating speed requirement for the component test platform.Therefore, additional expenditure that also can needs are not big on being equipped with according to the component test platform of present device or with the big sample of the original test of little one-tenth, for example whole clutch system or similar device.Therefore, this class A of geometric unitA testing table can be realized: also be power and the shaft diameter that needs and the combination of rotating speed required, that produce by the bearing retroaction under the situation of big sample and high rotating speed.
Here can be regarded as such system for damping system, the damping or for example eliminate because the uneven power that acts on the bearing that axle goes up or act on spool at least in part of this system.Especially, damping system can damping radially acts on the power on axle or the bearing, and these power for example can produce by the deflection of axle or bearing.
In a kind of preferred configuration, the damping unit that this damping system has is a plurality of, particularly six relative bearings are arranged to six sufficient shunting means.In this configuration, can realize a kind of particularly advantageous layout of damping unit, in order on each direction in space, by the stroke of determining the impact energy of effect is eliminated reliably.In detail, can on all possible direction in space, namely degree of freedom six-freedom degree-three translation and three rotations-on the deflection of damping bearing.These degree of freedom realize by six sufficient shunting means of particularly passive spring-damper system.Here especially can be regarded as such device for six sufficient shunting means, wherein, the relative bearing of damping unit constitutes six sufficient parallel institutions.The latter be a kind of in other application the form of known parallel kinematic lathe, it has a variable-length and radial type hangs six legs or damping unit.
In the preferred configuration of another kind, the damping intensity of damping system is adjustable.In this configuration, damping characteristic can adapt to diverse application and reach sample for example to be tested, and needn't change damping unit.Therefore, for example when regulating damping intensity, can consider and the position of the proportional impact energy of the rotating speed of axle or sample, point of force application and the quality that participates in.Therefore, can realize extremely variable application with this configuration according to equipment of the present invention.
In the preferred configuration of another kind, damping system has at least one damping unit that comprises ERF.Especially, above-mentioned damping unit whole all can comprise especially the ERF as damping liquid.By ERF is set, for example be combined with additional rubber cushion assembly, for example E1adur-damper, can eliminate the impact energy that when breaking event, occurs reliably on the one hand.The damping that the glutinousness of damping liquid that in addition can be by electric control changes damping system in the equipment simply, dynamically and accurately is adjusted on the different operating points especially.Here ERF especially can be understood as that a kind of material, and the flowing property of this material or its glutinousness can be controlled in wide scope rapidly and reversibly by electric field.What this met purpose be, on this damping system or on one or more is equipped with the damping unit of ERF the voltage parts are being set so, high voltage component particularly for example so that the flow characteristics of ERF by effect of electric field by adaptive with desirable degree.
In the preferred configuration of another kind, axle is in the drive unit side is rotatably supported in two bearings that arrange in succession along axis, and the bearing towards the drive unit side in these two bearings is configured solid bearing, is configured floating bearing towards the bearing of member side.So in this kind structural type, the defined motility of axle or the deflection that can cause owing to out-of-balance force by the combination realization of floating bearing and solid bearing, and do not load or damage bearing.In detail, axle can deflection in member side, and wherein this deflection is damped by bearing is connected on the damping system here, so that also can not damage bearing in member side.On the opposite side of axle, that is to say on the drive unit side, can realize minimum deflection by the combination of solid bearing and floating bearing, and can not make the bearing overload thus, and especially can not damage drive unit or the member that is connected with drive unit, as clutch coupling or gearing.Yet, give enough motilities in the case, in order to make bearing can too not load and reduce thus or got rid of damage.Therefore, especially in this configuration especially for the bearing of high load capacity, be the possibility that the bearing of member side can provide the skew acting force.Triple supportings by two bearings that are close at the drive unit side end of axle are responsible for being used for: under the situation of breaking; that is to say at the sample side end and occur under the situation of big power; axle is swung in its end of drive unit side not or hardly, like this for the protection of for example worm gear drive mechanism and high-speed clutch.
In the preferred configuration of another kind, at least one bearing is configured to hydrodynamic bearing.Particularly preferably, all bearing can be configured to hydrodynamic bearing.Especially can particularly advantageously realize the combination of big shaft diameter and high rated speed by hydrodynamic bearing, big shaft diameter since on the component test platform desired big power be favourable.In the case, the superficial velocity that reaches in bearing can be very near possible physics limit.Here on meaning of the present invention, can be regarded as a kind of like this bearing especially for hydrodynamic bearing, wherein movable member, for example inner bearing directly do not contact with outer bearing, and a lubricant film is set on the contrary therein, support this movable member by this lubricant film.
In the preferred configuration of another kind, hydrodynamic bearing has spherical axle sleeve, and this axle sleeve is arranged in the outer bearing, and wherein outer bearing has recessed inside surface, the form fit of this inside surface and spherical axle sleeve.Can make axle in the bearing medium dip by a kind of like this structure, this can not have bearing load ground and realizes relating to the deflection of unbalanced axle.For example can allow bearing ball or the relatively for example static bearing ball of this bearing or the outer bearing inclination relatively of axle sleeve of for example rotation of axle to this.At this, axle especially can tilt at all direction in spaces, so that can react for all out-of-balance forces basically.Therefore, this configuration especially has advantage for the solid bearing of drive unit side, but also can both significantly reduce the danger of damage of bearings in all bearings by the inclination of axle.Outer bearing has the recessed inside surface with the form fit of spherical axle sleeve, and this means that especially axle sleeve has identical distance all the time apart from adjacent outer bearing under the uniform situation of lubricating film.
In the preferred configuration of another kind, provide a device that is used for the lubrication film thickness of definite hydrodynamic bearing.In this configuration, can identify undesirable operating point and undesirable equipment performance ahead of time.If be no more than the value of the definition of lubrication film thickness, then turn-off apparatus or component test platform reliably.In addition, also can when devoting oneself to work, equipment with this system the damper that electric current becomes be adjusted on the different operating points.For example can be directly before original bearing, for example hydrodynamic bearing and after two stroke sensors of 90 ° that stagger are set respectively.They can detect the distance of a relative Reference, and can infer the residual thickness of lubricating film in the bearing by corresponding algorithm.
In the preferred configuration of another kind, at axle at least one impost is set.By for example between member side bearing and member, being arranged on the setting of the one or more imposts on the axle definitely, on the one hand it can influence the natural frequency of whole supporting system, makes this frequency can be positioned at critical operating point, for example break beyond the rotating speed.In addition, can improve the inertia of axle system thus, this has such result: rotatable parts have very little swing tendency by the inertia that improves when breaking event.Can realize the supplementary protection of bearing bridge and stablizing of total system thus.The impost of two or arbitrary number can be set at axle here.
In addition, the present invention relates to a kind of for the component test platform that checks sample, but comprise that one can be constructed and the equipment of expanded configuration as described above.Can realize relating to the damping of unbalanced power and improve the stability of resisting damage by the configuration of component test platform according to the present invention.A kind of component test platform that is equipped with according to present device here can be the centrifuge test platform especially, and it can be for testing the light member that heavy member or test have very high rotating speed.As restriction, for example can under the situation till the 180001/min, not check weight up to the sample of 35kg at centrifuge speed, perhaps check that at centrifuge speed for example weight is to the light sample of 2kg under the situation till the 250001/min.
Description of drawings
Exemplarily explain the present invention according to preferred embodiment with reference to the accompanying drawings, wherein no matter feature described below still can both show one aspect of the present invention separately individually in combination.
Show:
Fig. 1: according to the synoptic diagram of a kind of embodiment of present device;
Fig. 2: according to the synoptic diagram of the another kind of embodiment of present device;
Fig. 3: be illustrated in the synoptic diagram according to the bending property of a kind of embodiment axis of present device;
Fig. 4: according to the synoptic diagram of the another kind of embodiment of present device;
Fig. 5: the synoptic diagram according to an equipment part of the present invention is seen in expression from the oblique the place ahead of component test platform;
The side view of the embodiment of Fig. 6: Fig. 5;
Fig. 7: according to the synoptic diagram of the hydrodynamic bearing of a kind of embodiment of equipment of the present invention.
Embodiment
Fig. 1 shows in addition, and the bearing 14 of member side is connected with a damping system 22, so as damping axle 12 member side, that is to say bearing 14 the zone in deflection.Here especially can realize damping at whole six direction in spaces, this is as passing through shown in the arrow 24,26.Here understand obviously for the professional that two direction in spaces perpendicular to arrow 24,26 settings are not illustrated.By damping system 22 especially can for act on lopsidedly axle on 12 and only schematically be labeled as Fn's and go out to react with the masterpiece that arrow 28 is represented.
In addition, can axle 12 arrange at least one, preferred a plurality of impost 29.As seen, Fig. 2 illustrates an equipment 10 in Fig. 2 for this, and it corresponding to the equipment 10 of Fig. 1, wherein uses corresponding label for corresponding member basically.In Fig. 2, also represent the deflection of damping systems 22 by arrow 30.
Fig. 3 illustrates the advantage of the dual supporting of axle 12 drive unit side.In detail, axle 12 is by its sweeps 31,32 expressions, and bearing 14,16 and also have 18 in case of necessity wherein is set, and is used for bolster 12.Corresponding in the emergent deflection that acts on the situation lower shaft 12 of the power of axle on 12 lopsidedly, at this moment axle 12 only is bearing in the bearing 16 in the drive unit side at the sweep 31 shown in Fig. 3 a.If axle 12 is in member side deflection, then axle 12 swings in the drive unit side also are possible, and this illustrates by circle 33.On the contrary, in the dual supporting of drive unit side to axle 12, can significantly reduce the swing of drive unit side by bearing 16,18, this is as shown in Fig. 3 b.In this case, sweep 32 occurs in the end of the drive unit side of axle 12 under the situation of power also basically corresponding to the original axle 12 under the normal condition or the axis 20 of axle.
Fig. 4 illustrates in greater detail the configuration according to present device, and wherein, the corresponding member of Fig. 1 is provided with corresponding label relatively.Can find out that in Fig. 4 damping system 22 has the damping unit 34,36,38,40,42,44 that a plurality of relative bearings 14 are arranged to six sufficient shunting means.These damping units are because damping action has length variable, and it is by arrow 47 expressions.
At this, the details of six sufficient shunting means 24 of damping system can be seen from Fig. 5 and 6.Here show damping unit 34,36,38,40,42,44 structure, they are with known mode orientation itself, in order to constitute six leg mechanisms.At this, damping unit 34,36,38,40,42,44 for example is fixed on the freely-suspended bear box 46 in a side, and be fixed at opposite side on each fixing element 48,50,52 of component test platform, wherein, these elements 48,50,52 can be identical or be connected to each other or independent of each other.Bear box 46 can be constructed with high-intensity especially aluminium at this, because it is opposite with the axle system that rotates, it can have very little inertia, in order to can be offset acting force when breaking event, and can eliminate this acting force thus in damping system 22.
Can adjust their damping intensity for damping unit 34,36,38,40,42,44.Damping system 22 can have at least one damping unit that comprises ERF 34,36,38,40,42,44 for this reason, and wherein, preferably all set damping unit 34,36,38,40,42,44 all can comprise ERF.This for example can realize in conjunction with additional damper, the damper of for example being done by rubber.For example can movably piston be set in cylinder in order to constitute a compression stroke, wherein, this compression stroke is opened a balance space, yet outside atmosphere is closed, and can dwindle when damping for this reason.In compression stroke, piston can be connected with cylinder by damper.ERF for example can be set as damping liquid except damper in compression stroke, this liquid also can flow in the balance space by opening when the volume-diminished of compression stroke when reception thus.According to the glutinousness of ERF that can be by applying electric field adjusting, can regulate damping characteristic.
Return Fig. 4, also can find out here, bearing 14,16,18 can constitute hydrodynamic bearing.This hydrodynamic bearing at length is illustrated among Fig. 7.Fig. 7 only exemplarily shows solid bearing 16, is connected with spherical axle sleeve 54 at this bearing axis 12, and this axle sleeve is arranged in the outer bearing 56.Here, outer bearing 56 has a recessed inside surface 57, the form fit of this inside surface and spherical axle sleeve 54.
In addition, can also be provided for determining the device of hydrodynamic bearing 14,16,18 lubrication film thickness.Two sensors 58 for example can be set for this reason and two other is set in addition and be arranged in a sensor in 90 ° the plane of having overturn.They for example can measure axle 12 distance and use an algorithm-determine lubrication film thickness between axle sleeve 54 and the outer bearing 56 as displacement transducer thus-for example.
Because the power that under the situation of the event of breaking, occurs on principle only be at random and equipment only can design based on the factor of assurance of certain statistics, so also can finally be protected to resist all bigger power according to equipment of the present invention.This can realize with a special element, and this element has a specified fracture location and disconnects when reaching certain power limit thus, thereby stops out-of-balance force to act on the axle system of rotation.
The reference number inventory
10 equipment
12
14 bearings
16 bearings
18 bearings
20 axis
22 damping systems
24 arrows
26 arrows
28 arrows
29 imposts
30 arrows
31 sweeps
32 sweeps
33 circles
34 damping units
36 damping units
38 damping units
40 damping units
42 damping units
44 damping units
46 bear boxes
47 arrows
48 elements
50 elements
52 elements
54 axle sleeves
56 outer bearings
57 inside surfaces
58 sensors
Claims (10)
1. the equipment that is used for the component test platform, comprise for transmit the axle (12) of rotating force to the member of examine from rotating driving device, wherein said axle (12) is in member side is rotatably supported at least one bearing (14), and described axle (12) is in the drive unit side is rotatably supported at least one bearing (16), it is characterized in that the bearing of described member side (14) is connected with a damping system (22).
2. equipment according to claim 1 is characterized in that, this damping system (22) has a plurality of relative bearings (14) and is arranged to the damping unit of six sufficient shunting means (34,36,38,40,42,44).
3. equipment according to claim 1 is characterized in that, the damping intensity of this damping system (22) is adjustable.
4. equipment according to claim 3 is characterized in that, this damping system (22) has at least one damping unit that comprises ERF (34,36,38,40,42,44).
5. according to one of aforesaid right requirement described equipment, it is characterized in that, described axle (12) is in the drive unit side is rotatably supported in two bearings (16,18) that arrange in succession along the axis (20) of axle, bearing (16) towards the drive unit side in these two bearings (16,18) is configured to solid bearing, and described bearing towards member side (18) is configured to floating bearing.
6. according to one of aforesaid right requirement described equipment, it is characterized in that at least one bearing (14,16,18) is configured to hydrodynamic bearing.
7. equipment according to claim 5 is characterized in that, described hydrodynamic bearing has spherical axle sleeve (54), this spherical axle sleeve is arranged in the outer bearing (56), wherein, this outer bearing (56) has recessed inside surface (57), the form fit of this inside surface and this spherical axle sleeve (54).
8. according to claim 5 or 6 described equipment, it is characterized in that, be provided with a device that is used for the lubrication film thickness of definite this hydrodynamic bearing.
9. according to one of aforesaid right requirement described equipment, it is characterized in that, at described axle (12) at least one impost (29) is set.
10. be used for checking the component test platform of sample, comprise one according to the described equipment of one of aforesaid right requirement (10).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011087909A DE102011087909B3 (en) | 2011-12-07 | 2011-12-07 | Arrangement for component test stand, particularly centrifugal test stand for testing test sample, comprises damping system with multiple damping units, which are arranged in hexapod arrangement corresponding to component side bearing |
| DE102011087909.9 | 2011-12-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103257039A true CN103257039A (en) | 2013-08-21 |
| CN103257039B CN103257039B (en) | 2017-09-08 |
Family
ID=48288163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210599036.7A Active CN103257039B (en) | 2011-12-07 | 2012-12-06 | Equipment for component test platform |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103257039B (en) |
| DE (1) | DE102011087909B3 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2535435C1 (en) * | 2013-10-31 | 2014-12-10 | Открытое акционерное общество "Уфимское моторостроительное производственное объединение" ОАО "УМПО" | Resilient support with adjuster rigidity for dynamic tests of turbine machine rotors at test rig |
| DE102021134271A1 (en) | 2021-12-22 | 2023-06-22 | Schenck Rotec Gmbh | Oil damper and centrifugal test bench with one |
| DE102022125208A1 (en) | 2022-09-29 | 2024-04-04 | Schenck Rotec Gmbh | Arrangement for a spin test bench |
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| DE102011087909B3 (en) | 2013-05-29 |
| CN103257039B (en) | 2017-09-08 |
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