CN204788804U - Rotor combination piece - Google Patents
Rotor combination piece Download PDFInfo
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- CN204788804U CN204788804U CN201520485704.2U CN201520485704U CN204788804U CN 204788804 U CN204788804 U CN 204788804U CN 201520485704 U CN201520485704 U CN 201520485704U CN 204788804 U CN204788804 U CN 204788804U
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- unbalance
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- counterweight
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Abstract
The utility model provides a rotor combination piece, it includes rotor and sleeve, the both ends of rotor are provided with rotary axle journal respectively, the gyration axle journal forms the axis of rotation of rotor install on the gyration axle journal the sleeve, telescopic excircle forms the axis of rotation of sub -assembly, the rotor with the sleeve can rotate certain angle relatively, the rotor with the sleeve rotates relatively after reaching before the angle, the axis of rotation of rotor for the relative position of the axis of rotation of sub -assembly remains unchanged. Above -mentioned sub -assembly is adopted, the amount of unbalance of rotor itself can be acquireed through the amount of unbalance who measures above -mentioned sub -assembly. The amount of unbalance of antitrochanter itself rectifies, can obtain the rotor that amount of unbalance is less than the setting value.
Description
Technical field
The utility model relates to a kind of rotor stack.
Background technology
For inspection and the evaluation of the amount of unbalance of dynamic balancing machine and rotor, existing international standard is " description inspection and the evaluation of ISO2953:1999BalancingMachines – DescriptionandEvaluation equilibrator ".The index of the verification rotor that this standard is recommended and the inspection of defined and evaluation and code, be the classic method that historical continuity gets off, amount of unbalance measurement result can not be traced to the source.
For the measurement of computing ballance correction, the problem of prior art has: when equilibrator carries out amount of unbalance measurement to rotor, due to by existing technology, also do not set up tracing to the source of aequum measurement, therefore can not assert that the size and Orientation of the amount of unbalance that equilibrator measurement obtains is accurately.Rotor is when balancing airborne measurements, and measured amount of unbalance is the vector of the whole system amount of unbalance of rotor and equilibrator, is not the amount of unbalance of rotor itself; In some cases, on equilibrator with rotor contact and the part of relative motion also can be added in the amount of unbalance of rotor with the form of amount of unbalance to the alternation acting force that rotor produces.
Therefore, need to invent a kind of rotor stack used in amount of unbalance is measured, overcome the problem of prior art, obtain the amount of unbalance of rotor itself, realize tracing to the source of amount of unbalance measurement.
Utility model content
In view of above-mentioned technical matters, the purpose of this utility model is to provide a kind of rotor stack, by measuring the amount of unbalance of rotor stack, can obtain the amount of unbalance of rotor itself.Realize tracing to the source of amount of unbalance measurement.
Technical solutions of the utility model 1 provide a kind of rotor stack, wherein, comprise rotor and sleeve, and the two ends of described rotor are respectively arranged with revolution axle journal, and described revolution axle journal forms the axis of rotation of described rotor, and described revolution axle journal is provided with described sleeve; The outer ring of described sleeve becomes the axis of rotation of subassembly, and described rotor and described sleeve can relatively rotate certain angle; Before described rotor and described sleeve relatively rotate described angle and afterwards, the axis of rotation of described rotor remains unchanged relative to the relative position of the axis of rotation of described subassembly.
By above stated assembly, rotor and sleeve are relatively rotated certain angle, by the amount of unbalance after rotation described in the amount of unbalance of measurement above stated assembly before described rotation and above stated assembly, the amount of unbalance of rotor itself can be obtained by vector calculus.The amount of unbalance of rotor itself is corrected, the rotor that amount of unbalance is less than setting value can be obtained.
The utility model scheme 2 provides a kind of rotor stack, and wherein, comprise rotor and sleeve, described rotor is provided with inner circle, and the axis of rotation of described interior round-formed described rotor, is embedded with described sleeve in described inner circle; The endoporus of described sleeve forms the axis of rotation of subassembly; Described rotor and described sleeve can relatively rotate certain angle; Before described rotor and described sleeve relatively rotate described angle and afterwards, the axis of rotation of described rotor remains unchanged relative to the relative position of the axis of rotation of described subassembly.
Adopt above stated assembly, rotor and sleeve are relatively rotated certain angle, by the amount of unbalance after rotation described in the amount of unbalance of measurement above stated assembly before described rotation and above stated assembly, the amount of unbalance of rotor itself can be obtained by vector calculus.The amount of unbalance of rotor itself is corrected, the rotor that amount of unbalance is less than setting value can be obtained.
Accompanying drawing explanation
Fig. 1 is rotor schematic diagram, wherein (a) be rotor front view, side view that (b) is rotor.
Fig. 2 is a kind of schematic diagram of rotor R 1, and wherein (a) is front view, and (b) is side view.
Fig. 3 is a kind of schematic diagram of mass weight, and wherein (a) is front view, and (b) is side view.
Fig. 4 is the schematic diagram after rotor installs counterweight additional, and wherein (a) is front view, and (b) is side view.
Fig. 5 is before rotor adds counterweight and after adding counterweight, measures gained amount of unbalance schematic diagram.
Fig. 6 is the schematic diagram of sleeve.A () and (b) is a kind of schematic diagram of sleeve, wherein (a) is front view, and (b) is side view.C () and (d) is the schematic diagram of the second sleeve, wherein (c) is front view, and (d) is side view.E () and (f) is the schematic diagram of the third sleeve, wherein (e) is front view, and (f) is side view.
Fig. 7 is the schematic diagram of subassembly, and wherein (a) is front view, and (b) is side view.
Fig. 8 measures subassembly gained amount of unbalance schematic diagram with equilibrator, wherein (a) be plane P L1 amount of unbalance, amount of unbalance that (b) is plane P L2.
Fig. 9 represents to rotate after 90 degree at rotor relative sleeve, second time measurement subassembly gained amount of unbalance, wherein (a) be plane P L1 amount of unbalance, amount of unbalance that (b) is plane P L2.
Figure 10 represents to calculate rotor unbalance value by vector calculus, wherein (a) be plane P L1 amount of unbalance, amount of unbalance that (b) is plane P L2.
Figure 11 to be amount of unbalance be zero rotor schematic diagram, wherein (a) is front view, and (b) is side view.
Figure 12 is the rotor figure with amount of unbalance of tracing to the source, wherein (a) be rotor front view, side view that (b) is rotor.
Figure 13 is a kind of schematic diagram of counterweight, wherein (a) be counterweight front view, side view that (b) is counterweight.
Figure 14 is the rotor figure with amount of unbalance of tracing to the source, wherein (a) be rotor front view, side view that (b) is rotor.
Figure 15 is the rotor figure having done angle zero degree reference point on rotor, wherein (a) be rotor front view, side view that (b) is rotor.
Figure 16 displaced the schematic diagram after certain angle epitrochanterian angle zero degree reference point, wherein (a) be rotor front view, side view that (b) is rotor.
Embodiment
Below, embodiment of the present utility model is illustrated with reference to accompanying drawing.For convenience of explanation, following step is tactic by enforcement substantially, but also has partial content not record in order, and the order of following steps is not unique yet.And following step is only for illustrating, and be not all necessary, as long as can present embodiment be implemented.Present embodiment is also not used in restriction protection domain of the present utility model.
A. Figure 1 shows that a rotor R.The front elevation that in Fig. 1, (a) is rotor, the side view that (b) is rotor.When the mass distribution of rotor R and quality axis b-b do not overlap with rotor R axis of rotation A-A, namely there is amount of unbalance in this rotor R.In the utility model, the rotor of indication is rigid rotator, namely thinks that the quality of rotor and mass distribution are fixing, and because rotor rotating speed when dynamic balancing measurement is different, amount of unbalance does not change.The quality axis b-b of rigid rotator is fixing.Amount of unbalance is a vector, has size and Orientation.The amount of unbalance of a rotor R can represent perpendicular to the amount of unbalance of two in the plane of axis of rotation with optional two, plane P L1 as shown in Figure 1 and plane PL2.For the rotor of same non-equilibrium state, when selecting Different Plane, the size and Orientation of its amount of unbalance is different, but between can mutually convert.When the axial length of rotor is less relative to the ratio of its radius, the amount of unbalance of rotor also can represent with the amount of unbalance in a plane.
Support member Jma on equilibrator and two, the left and right of Jmb support rotor revolution axle journal, define the axis of rotation A-A of rotor.That is, the axis of rotation turning round the cylindrical of axle journal is exactly the axis of rotation A-A of rotor.Equilibrator there are roller, bearing shell, vee-block for the support member of rotor, rise the various ways such as core fixture.
Equilibrator there is axial limiting part for rotor, Ja and Jb as shown in Figure 1.
Equilibrator needs rotor to drive to accelerate to measures rotating speed to realize amount of unbalance measurement.Equilibrator has various ways for the driving of rotor, has roller driving, belt drives etc.
Rotor arranges angle zero degree reference point, as shown in the F0 in (b) in Fig. 1.Angle zero degree reference point, in some cases, can be arranged in the drive system of equilibrator.
Equilibrator is provided with angular transducer, and as shown in the RF in (b) in Fig. 1, in order to measure the direction of rotor unbalance value, namely amount of unbalance is relative to the angle of angle zero degree reference point.
When the axis of rotation of rotor is determined, and after have selected measurement plane, the size of the amount of unbalance of rotor is unique.The direction of amount of unbalance, the angle of amount of unbalance is relevant with arranging of angle zero degree reference point when measuring in other words.
B. Fig. 2 is the schematic diagram of a rotor R 1.The external diameter of rotor R 1 is r1.Two plane P L1 perpendicular to axis of rotation and plane PL2 are selected to represent the amount of unbalance of rotor R 1.On the rotor outer circle that plane P L1 and plane PL2 is corresponding, process the threaded hole that at least one center line points to rotor axis of rotation, the implementation case selects each processing four 90 degree of threaded holes of being separated by plane P L1 and PL2.Processing threaded hole is to install mass weight additional on rotor outer circle.By on plane P L1 and plane PL2, be positioned at two threaded holes in 90 degree of directions, be denoted as H11 and H21 respectively.
Each processing two place's axle journals on the revolving shaft at the two ends, left and right of rotor R 1, two place's axle journals of left end are denoted as J11, J12 respectively, and two place's axle journals of right-hand member are denoted as J21, J22 respectively.The axis of rotation of rotor is formed by the axle journal J12 of left end and the axle journal J22 of right-hand member.
Rotor is angle zero degree reference point F1, as shown in Figure 2.
On rotor R about 1 end flat PL3 and plane PL4, in the radius r position at a distance of axis of rotation A-A, be symmetrical in the centre of gyration, on each end face, processing is parallel to the mounting hole of rotor axis of rotation, for installation quality counterweight.There is no particular limitation for the number of processing mounting holes, more than a hole on each end face.The mounting hole that the implementation case adopts four, every face symmetrical, hole depth is d, and there is no particular limitation for the diameter in hole.By on plane P L3 and plane PL4, be positioned at two holes in 0 degree of direction, be denoted as H31 and H41 respectively.
C. the utility model provides following way, makes generation and can to trace to the source amount of unbalance counterweight, and for being installed at rotor outer circle, generation can be traced to the source amount of unbalance.
Make mass weight two as shown in Figure 3, be denoted as W1 and W2 respectively.Counterweight is cylindrical structural, and the two ends of counterweight are processed with stud, and the length of counterweight center section is r2, and center section has two perpendicular to the plane of center stud line, and counterweight be may be screwed in the threaded hole on rotor R 1 cylindrical by stud.
Structure about counterweight is not particularly limited, as long as it is axially symmetric structure, and have two perpendicular to the face of axis of symmetry, and have and can be installed to epitrochanterian end construction, when being installed on rotor to make counterweight, the face on counterweight contacts with face corresponding with counterweight on rotor and can produce apart from rotor axis of rotation set a distance really.To the structure at the two ends of counterweight, and rotor is in the structure of installing installation counterweight set in counterweight plane, as long as counterweight can be fixed on rotor, do not split away off from rotor R 1, and make counterweight have from rotor axis of rotation set a distance really, existing mode in prior art can be adopted, be not particularly limited at this.
Any one end of counterweight W1 is screwed in any one threaded hole on rotor R 1 cylindrical plane P L1, any one end of counterweight W2 is screwed in any one threaded hole of rotor R 1 cylindrical plane P L2, and the end face of counterweight center section one end is contacted with the cylindrical of rotor R 1, in the implementation case, counterweight W1 is screwed in threaded hole H11, counterweight W2 is screwed in threaded hole H21, as shown in Figure 4.Be put on equilibrator by the rotor R 1 with counterweight, measure the amount of unbalance of rotor, its amount of unbalance on plane P L1 and plane PL2 is denoted as U respectively
f11and U
f21; Counterweight W1 and counterweight W2 is backed out from rotor R 1, again be screwed in threaded hole original on plane P L1 and plane PL2 with the stud of the counterweight other end again, and counterweight center section end face is contacted with the cylindrical of rotor, again measure the amount of unbalance of rotor R 1 on plane P L1 and plane PL2, be denoted as U
f12and U
f22.If U
f11and U
f12vary in size, then illustrate that the barycenter of counterweight W1 is not at its length r
2centre position; According to U
f11and U
f12size, mass calibration is carried out to counterweight W1.If U
f21and U
f22vary in size, then illustrate that the barycenter of counterweight W2 is not at its length r
2centre position; According to U
f21and U
f22size, mass calibration is carried out to counterweight W2.
Repeat measurement as above and trimming process, until the barycenter of counterweight W1 is positioned at counterweight length r
2centre position, the barycenter of counterweight W2 is positioned at counterweight length r
2centre position.
Weigh with scale the quality of the counterweight after step above, and its quality is designated as m1 and m2 respectively, and note revises and counterweight after weighing is W
1Dand W
2D.
Counterweight W
1Dbeing installed at the amount of unbalance size that any one plane produces rotor R 1 exradius r1 is m1* (r1+r2/2) (kg*m), and the direction of amount of unbalance is determined by the angle of added counterweight position; Counterweight W
2Dbeing installed at the amount of unbalance size that any one plane produces rotor R 1 exradius r1 is m2* (r1+r2/2) (kg*m), and the direction of amount of unbalance is determined by the angle of added counterweight position.
The mass unit of counterweight is kilogram (kg), and the unit of the center section length of rotor diameter, counterweight is rice (m), and angular unit is degree (can be exchanged into Rad), counterweight W
1D, W
2Dthe size of the amount of unbalance produced and angle, associate with International System of Units base unit (quality kg and length m) and International System of Units supplementary unit (plane angle radian rad), the amount of unbalance that the counterweight namely made by method above produces can be traced to the source.
Produce the mass weight producing amount of unbalance of can tracing to the source like this.
The size of the amount of unbalance that mass weight of can tracing to the source produces only with the quality of counterweight and counterweight barycenter from rotor axis of rotation distance dependent, direction is only relevant with the position that counterweight installs additional; Direct relation is not had with the size and Orientation of the measurement amount of unbalance of equilibrator, so when implementing making mass weight scheme of the present utility model, only require that equilibrator (or instrument of the size and Orientation of any energy measuring vibrations) relative measurement is accurate, namely there are enough duplicate measurements precision, do not need its absolute measured value accurate.
D. use following method, check that displayed value measured by equilibrator, comprise size and Orientation, whether accurately, if necessary, measurement displayed value is again demarcated or compensated.
To rotor R 1 as shown in Figure 4, under the condition not installing two mass weights additional, rotor R 1 is put into balance airborne measurements, measures the amount of unbalance obtained and be respectively U at plane P L1 and plane PL2
a11and U
a21.
Rotor R 1 plane P L1 installs mass weight W additional
1D, plane P L2 installs additional mass weight W
2D.Mass weight can be installed in any one threaded hole epitrochanterian, and in the implementation case, two mass weights are installed in two threaded hole H11 and H21 of plane P L1 and plane PL2 on 90 degree of directions.Second time measures the amount of unbalance of rotor, measures the amount of unbalance obtained and is respectively U at plane P L1 and plane PL2
a12and U
a22.
The amount of unbalance that the amount of unbalance measure first time and second time are measured is figure on planimetric coordinates, as shown in Figure 5.Origin is the zero point of amount of unbalance size, and 0 degree of coordinate is the angle zero degree reference point in rotor R 1.
Amount of unbalance vector U
a12and U
a11difference be counterweight W
1Dthe amount of unbalance U produced
w1D, amount of unbalance vector U
a22and U
a21difference be counterweight W
2Dthe amount of unbalance U produced
w2D.If amount of unbalance vector U
a12and U
a11extent and direction and U
w1Djust identical, then illustrate that the measurement displayed value of equilibrator on plane P L1 is accurately; If amount of unbalance vector U
a22and U
a21extent and direction and U
w2Djust identical, then illustrate that the measurement displayed value of equilibrator on plane P L2 is accurately.
If on any one face, the measurement displayed value of equilibrator is inaccurate, can use counterweight W
1Dor W
2Dequilibrator demarcated or compensates, making the measurement displayed value of equilibrator accurate.
The amount of unbalance U at plane P L1 and plane PL2 of the rotor R 1 E. measured above
a11and U
a21and be not exclusively the amount of unbalance of rotor itself, but include the amount of unbalance of equilibrator itself, as the amount of unbalance of fixture, to the compensation amount of unbalance of amount of unbalance in measuring system, and on equilibrator with rotor contact and relative motion part be applied to epitrochanterian alternating force produce amount of unbalance.The utility model following method and step, separate the amount of unbalance of rotor and the amount of unbalance of other factors, thus obtain the amount of unbalance of rotor itself.
E1. make two sleeves, sleeve has precision machined endoporus and cylindrical.On two sleeves and revolution axle journal J12 and J22, be made with 0 degree, 90 degree, 180 degree, 270 degree angle marks.The schematic diagram of sleeve is as shown in (a) He (b) in Fig. 6, and wherein (a) is front elevation, and (b) is side view.On sleeve at one end, balancing a survey angle zero degree reference point F2 is set.
The method of (a) in Fig. 6 and (b) shown two sleeve hot chargings be contained on outermost two revolution axle journal J12 and J22 of rotor R 1 respectively, 0 scale designation on 0 degree angle mark on sleeve and axle journal J12, J22 aligns.Outermost two of hub internal bore and rotor R 1 are turned round axle journal J12 and J22 and are coordinated by slight interference and keep coaxial.Rotor after rotor R 1 has installed two sleeves additional is called subassembly, is designated as R2, as shown in Figure 7.The cylindrical of sleeve defines subassembly revolution axle journal, and be denoted as J13 and J23, these two axle journals define the axis of rotation of subassembly.Revolution axle journal J12 and J22 of rotor R 1, the endoporus of two sleeves in other words, forms the axis of rotation of rotor R 1.Turn round axle journal J12 with J13, revolution axle journal J22 with J23 position is in the axial direction of the rotor identical.
For the structure of sleeve, be not particularly limited, for the sleeve installed additional on revolution axle journal, as long as the endoporus of sleeve forms identical axis of rotation with the revolution axle journal of rotor R 1, the cylindrical of sleeve forms stable axis of rotation.Endoporus and the cylindrical not requirement of sleeve must be concentric.In Fig. 6, (c) and (d) gives the schematic diagram of another kind of sleeve, and wherein (c) is front elevation, and (d) is side view; The structure of this kind of sleeve is, process two at the endoporus lower position of sleeve to fix and the supporting surface protruded, have an adjustable stud on top, with the sleeve of this structure, by tightening or unclamping adjustment stud, can easily the revolution axle journal of sleeve from rotor be taken off and load onto; Be attached to by sleeve after on rotor, the outer ring of sleeve becomes the axis of rotation of subassembly.(e) and (f) of Fig. 6 gives a kind of schematic diagram of the sleeve installed additional in the inner circle of rotor, and wherein (e) is front elevation, and (f) is side view; The structure of this kind of sleeve is, process two at excircle of sleeve lower position to fix and the supporting surface protruded, have an adjustable stud on top, with the sleeve of this structure, by tightening or unclamping adjustment stud, can easily sleeve be nested in the inner circle of rotor; Be nested into after on rotor by this sleeve, the endoporus of sleeve forms the axis of rotation of subassembly.
As long as by endoporus and the cylindrical (as shown in (a) in Fig. 6 and (b) sleeve) of Precision Machining sleeve, or Precision Machining forms corresponding site or the part (as shown in (c) in Fig. 6 and (d) sleeve) of endoporus or cylindrical, the endoporus of sleeve and cylindrical is made to form stable axis of rotation, be contained on the precision machined revolution axle journal (forming stable axis of rotation) of rotor, or, be contained in the precision machined inner circle (forming stable axis of rotation) of rotor, just can ensure the axis of rotation of rotor relative to the axis of rotation adding sleeved rear formed subassembly before rotor is relative to sleeve revolution with revolution after relative position remain unchanged.
E2. subassembly R2 is put on equilibrator.Equilibrator is for the driving for subassembly of support Jna and Jnb, axial limiting Ja1 and Jb1 of subassembly and equilibrator, all realized by two sleeves of the left and right sides, measuring unbalanced angle reference point is arranged on the sleeve of rotor one end, so just accomplish: rotor R 1 is except with except two barrel contacts on the axle journal of two ends, left and right, not with any component contact on equilibrator, any incidence relation is not formed, as shown in Figure 7 yet.
E3. the amount of unbalance of subassembly R2 is measured with equilibrator.In present embodiment, subassembly Horizontal supporting mode is placed on equilibrator.Equilibrator supports and the mode of drive assembly R2 does not limit, but will meet the qualifications of previous step E2.Measure the amount of unbalance that obtains and be designated as amount of unbalance U21 on the amount of unbalance U11 (first time measures amount of unbalance, comprises size and Orientation) of plane P L1 and plane PL2.First time is measured amount of unbalance U11 and U21 and is figure on planimetric coordinates, as in Fig. 8 (a), shown in (b).Origin is the zero point of amount of unbalance size, and 0 degree of coordinate is the angle zero degree reference point on subassembly R2.
When carrying out amount of unbalance and measuring, in order to improve measurement accuracy, in each step, subassembly R2 being carried out repeatedly duplicate measurements, being designated as amount of unbalance measured value with the mean value of repetitive measurement.
E4. subassembly R2 is taken off from equilibrator.The mode of the sleeve hot charging of subassembly R2 both sides is taken off, by onesize relative to two sleeve rotating in same directions for axle journal J12 with J22 of rotor R 1 angle, then the method for two sleeve hot chargings is attached to rotor R 1 axle journal and gets on.The angle that rotor R 1 is rotated relative to sleeve is arbitrary value, selects rotor R 1 to return clockwise relative to two, left and right sleeve herein and turn 90 degrees.
E5. subassembly R2 is put on equilibrator again, under measuring similarity condition with first time, again measures its amount of unbalance in described two planes; Measuring the amount of unbalance obtained is that second time measures amount of unbalance, is designated as the amount of unbalance U12 of plane P L1 and the amount of unbalance U22 of plane PL2.As shown in (a), (b) in Fig. 9.
In superincumbent twice measurement of subassembly R2, unique difference is, rotor R 1 has rotated clockwise 90 degree relative to two sleeves, the condition of other side, comprises the axis of rotation of the axis of rotation of subassembly R2, rotor R 1, just the same in twice measurement.The difference of subassembly R2 amount of unbalance in twice measurement, can only and to be rotor R 1 completely rotate described angle relative to sleeve produces.In twice measurement, the size of the amount of unbalance of rotor R 1 is the same, the direction of the amount of unbalance of rotor R 1, and the angle zero degree reference point on relative sleeve, has rotated clockwise 90 degree.
The revolving shaft often held at rotor processes the object of two place axle journal J11 and J21 in addition near the position of rotor end-face, be used to check the axis of rotation of rotor relative to the axis of rotation adding sleeved rear formed subassembly before rotor is relative to sleeve revolution with revolution after relative position remain unchanged.
E6. by vector calculus to twice measurement result, rotor is calculated with the amount of unbalance of the axis of rotation turning round axle journal J12 and J22 and formed, as shown in (a), (b) in Figure 10; Rotor R 1 is Ua at the amount of unbalance of plane P L1, becomes the amount of unbalance of clockwise direction 90 degree with Ua, and be that rotor R 1 relative sleeve returns the amount of unbalance after turning 90 degrees clockwise, its size does not change, but direction has changed 90 degree clockwise.Rotor R 1 is Ub at the amount of unbalance of plane P L2; Become the amount of unbalance of clockwise direction 90 degree with Ub, be that rotor R 1 relative sleeve returns the amount of unbalance after turning 90 degrees clockwise, its size does not change, but direction has changed 90 degree clockwise.
Coordinate 0 o'clock vector 0-01 to two an angle of 90 degrees summits and vector 0-02 is equilibrator respectively except rotor R 1 amount of unbalance with except amount of unbalance on plane P L1 and plane PL2.
In order to obtain higher measuring accuracy, by relative relative to rotor R 1 for sleeve revolution more than twice or twice, repeating measuring process above, measuring to more than twice the measurement result obtained and carry out vector calculus.
F. the amount of unbalance of rotor R 1 on plane P L1 and plane PL2 is corrected, make it be less than setting value.
So just obtain the rotor that amount of unbalance is less than setting value.
In order to make the amount of unbalance of rotor R 1 on plane P L1 and plane PL2 close to zero, repeating above-mentioned step e and measuring and step F trimming process.
So just obtain the rotor that amount of unbalance is zero (in error allowed band), be designated as R3, as shown in figure 11.
G. will produce amount of unbalance counterweight of tracing to the source made by above-mentioned steps C, being attached to amount of unbalance is on rotor R 3 top external diameter of zero, at plane P L1, installs counterweight W additional
1Dafter, the size of its amount of unbalance had is m1* (r1+r2/2) (kg*m), and the direction of amount of unbalance is determined by the angle of added counterweight position; Counterweight W
2Dbe installed on rotor R 3 plane P L2, the amount of unbalance size produced is m2* (r1+r2/2) (kg*m), and the direction of amount of unbalance is determined by the angle of added counterweight position.In the implementation case, counterweight W
1Dwith counterweight W
2Dbe installed in threaded hole H11 and H21 respectively, namely the angle of amount of unbalance is all 90 degree.
The mass unit of counterweight is kilogram (kg), and the unit of the center section length of rotor diameter, counterweight is rice (m), and angular unit is degree (can be exchanged into Rad), counterweight W
1D, W
2Dthe size of the amount of unbalance produced and angle, associate with International System of Units base unit (quality kg and length m) and International System of Units supplementary unit (plane angle radian rad), namely by method above, produce the rotor with amount of unbalance of can tracing to the source, be designated as R4, as shown in figure 12.
H. utilize following method of the present utility model, make and produce the counterweight of amount of unbalance of can tracing to the source, for being installed at rotors normal in the end face of axis of rotation, generation can be traced to the source amount of unbalance.
Make two cylindrical mass counterweights as shown in figure 13, be designated as W3 and W4 respectively, the diameter of counterweight has no particular limits, and the length of counterweight is 2d, i.e. the mounting hole hole depth of 2 times.The end face of counterweight marks 0,90,180,270 degree of four angles marks.
Counterweight W3 and W4 is known the upwards attitude of 12 with 0 scale, and insert respectively in the top mounting hole H31 and H41 on the first plane P L3 of rotor R 1 shown in Fig. 2 and the second plane P L4, namely two the end face upper angles in left and right are in two mounting holes of 0 degree.
With the amount of unbalance of equilibrator measuring tape counterweight rotor, the first plane is designated as U
w31, the second plane is designated as U
w41; Counterweight W3 and W4 is taken out, after it is turned round certain angle clockwise relative to first time Installation posture, then counterweight W3 and W4 is inserted in the original mounting hole of rotor respectively.Counterweight is not particularly limited relative to the pivotal angle of mounting hole, and this sentences to return clockwise and turn 90 degrees as example illustrates.Then carry out second time to measure, measure amount of unbalance and be designated as U
w32and U
w42.When carrying out amount of unbalance and measuring, in order to improve measurement accuracy, taking multiple measurements in each step, being designated as amount of unbalance measured value with the mean value of repetitive measurement.
If the amount of unbalance U of rotor
w31and U
w32size or direction inconsistent, illustrate that the barycenter of counterweight W3 departs from counterweight center line, by measuring the amount of unbalance U that obtains
w31and U
w32, measure by previous step E and step F and correct the method for rotor unbalance value, calculating the amount of unbalance of counterweight W3, and eccentric correction is carried out to counterweight W3.In order to obtain bias close to the counterweight of zero, taking multiple measurements and correcting, until U
w31and U
w32size differences is less than setting value or close to consistent, its direction is less than setting value or close consistent; Same step operation is carried out to counterweight W4.After step above, the barycenter of counterweight W3 and W4 and its center line depart from and are less than setting value or close to zero.
Weigh with scale the quality of counterweight W3 and W4 after step above, is designated as m3 and m4.
Will through balancing a survey above and correction, the counterweight that barycenter and its center line depart from and be less than setting value, quality is respectively m3 and m4, is designated as W
3Dand W
4D.W
3Dand W
4Dbe and can produce the counterweight determining amount of unbalance, its amount of unbalance produced is the quality of counterweight and the counterweight centre of gyration line product from the distance of rotor axis of rotation.
By counterweight W
3Dand W
4D, inserting the amount of unbalance shown in Figure 11 is respectively in the top mounting hole H31 on the first plane P L3 of the rotor R 3 of zero and the second plane P L4 and mounting hole H41.The rotor of this kind of state, is designated as R5, as shown in figure 14.The amount of unbalance size that then rotor R 5 has on plane P L3 is m3*r (kg*m), and direction is 0 degree, and it is m4*r (kg*m) that plane P L4 has amount of unbalance size, and direction is 0 degree.
The mass unit of m3 and m4 is kilogram (kg), and the long measure of r is rice (m), and angular unit is degree (can be exchanged into Rad); Counterweight W
3Dand W
4Dthe size of amount of unbalance produced and angle, in other words rotor R 5 with amount of unbalance, associate with International System of Units base unit (quality kg and length m) and International System of Units supplementary unit (plane angle radian rad).So just make the counterweight producing amount of unbalance of can tracing to the source, and there is the rotor of amount of unbalance of can tracing to the source.
Centroid position in order to ensure counterweight is positioned in the plane of added counterweight on rotor, method step C and the step H of above-mentioned making mass weight can be coordinated, make counterweight made by step C, not only make its centroid position be located at centre position on length direction, and make centroid position be positioned in the central symmetry axes of counterweight; Make the counterweight made by step H, not only make its centroid position be positioned on center line, and centroid position is positioned on the centre position of the length direction of counterweight.
I. the utility model additionally provides a kind of method measuring rotor unbalance value: equilibrator is horizontal layout and adopts roller supporting rotor, equilibrator acts on the center of rotor revolving shaft end face for the axial limiting of rotor, and the amount of unbalance angle zero degree reference point of rotor is arranged on rotor.The drive unit of equilibrator is after driving rotor accelerates to and measures rotating speed, and drive unit disconnects with rotor automatically, or drive unit does not reoffer driving force and is equally with rotor lean on inertia turning.Balancing a survey is measured under the inertia turning of rotor.Under this arrangement, all on equilibrator have the part of relative motion with rotor contact, do not produce the alternation acting force perpendicular to rotor axis of rotation to rotor.Under these conditions, by the way of transfer rotor upper angle zero degree reference point, the amount of unbalance of rotor is obtained.
The method of angle transfer is, when first time measures, make an angle reference point P1, as shown in figure 15 in any one position epitrochanterian.After first time measures, angle reference point original on rotor is removed, to be separated by certain angle place in original reference point, newly to make reference a P2.In the present embodiment, with counterclockwise 90 degree of transfer angle reference point, as shown in figure 16.For rotor R 1, transfer an angle of 90 degrees degree reference point is equivalent to, when adding sleeved, R1 has been rotated clockwise 90 degree relative to sleeve counterclockwise.After carrying out new reference point P2, second time is carried out to rotor and measures.Measure amount of unbalance by first time and measure amount of unbalance for the second time, by method and the step of previous step E, obtaining the amount of unbalance of rotor R 1.
By utilizing the utility model and prior art, different objects can also be realized in the following way.
J. the demarcation of equilibrator: respectively with amount of unbalance be zero rotor R 3 and with the rotor R 4 of amount of unbalance of can tracing to the source or R5, mark zero point and the amount of unbalance determined of equilibrator, realize the demarcation to equilibrator.
K. the detection of equilibrator: with amount of unbalance be zero rotor R 3 and with the rotor R 4 of amount of unbalance of can tracing to the source or R5, check any equilibrator, examine measurement result in both cases respectively, judge whether this equilibrator is measured accurately.
L. the amount of unbalance of different brackets be the rotor of zero, the making with amount of unbalance rotor of can tracing to the source of different brackets: obtain amount of unbalance be zero rotor R 3 and with the rotor R 4 of amount of unbalance of can tracing to the source or R5 after, equilibrator is demarcated with step J, and after having carried out the reinspection of step K, it is the rotor R a of zero that balance makes new amount of unbalance, and there is the rotor R b of amount of unbalance of can tracing to the source, be the rotor R a of the zero or rotor R b with amount of unbalance of can tracing to the source with regard to obtaining the amount of unbalance of another kind of grade like this.
Be explained above particular implementation of the present utility model, the utility model is not limited to above-mentioned embodiment.Technological thought of the present utility model can be out of shape arbitrarily to embodiment of the present utility model, and the step of above-mentioned embodiment, and be not all necessary.Such as, at the scene of the actual use of equilibrator, based on the structure of equilibrator, the structure of rotor and field condition, equilibrator drives for the axial limiting of subassembly and realizing balanced rotation and might not act on sleeve, but act on rotor, as long as epitrochanterian confined planes has good smooth finish, locating part can be ignored the alternating force that rotor produces, by method of the present utility model, the rotor that amount of unbalance is determined in enough the having of precision can be produced, meet the demand that production scene amount of unbalance detects; Angle zero degree reference point also can not to be made on sleeve but to be made on rotor, after rotor relative sleeve turns an angle, and the angle corresponding to angle zero degree reference point is oppositely mobile.
Following structure is adopted in addition in above-mentioned embodiment of the present utility model, namely rotor arranges revolution axle journal at two ends, left and right, revolution axle journal forms the axis of rotation of rotor, during measurement, jacket casing is being turned round on axle journal, the structure of equilibrator contact sleeve periphery, as variation, revolution axle journal can not be set at the two ends, left and right of rotor, but arrange for pivotal inner circle, when measuring, sleeve is embedded in inner circle, equilibrator contact sleeve endoporus.
Claims (2)
1. a rotor stack, is characterized in that,
Comprise rotor and sleeve, the two ends of described rotor are respectively arranged with revolution axle journal, and described revolution axle journal forms the axis of rotation of described rotor, and described revolution axle journal is provided with described sleeve; The outer ring of described sleeve becomes the axis of rotation of subassembly, and described rotor and described sleeve can relatively rotate certain angle; Before described rotor and described sleeve relatively rotate described angle and afterwards, the axis of rotation of described rotor remains unchanged relative to the relative position of the axis of rotation of described subassembly.
2. a rotor stack, is characterized in that,
Comprise rotor and sleeve, described rotor is provided with inner circle, and the axis of rotation of described interior round-formed described rotor, is embedded with described sleeve in described inner circle; The endoporus of described sleeve forms the axis of rotation of subassembly; Described rotor and described sleeve can relatively rotate certain angle; Before described rotor and described sleeve relatively rotate described angle and afterwards, the axis of rotation of described rotor remains unchanged relative to the relative position of the axis of rotation of described subassembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520485704.2U CN204788804U (en) | 2015-05-19 | 2015-07-07 | Rotor combination piece |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520325580 | 2015-05-19 | ||
| CN201520485704.2U CN204788804U (en) | 2015-05-19 | 2015-07-07 | Rotor combination piece |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016184304A1 (en) * | 2015-05-19 | 2016-11-24 | 郭卫建 | Method for acquiring unbalance amount of rotor |
| WO2017162080A1 (en) * | 2016-03-22 | 2017-09-28 | 郭卫建 | Method for acquiring amount of unbalance of rotor |
| WO2017186062A1 (en) * | 2016-04-29 | 2017-11-02 | 郭卫建 | Method for obtaining position of mass centre of unbalanced weight |
| CN108489669A (en) * | 2018-03-23 | 2018-09-04 | 中国航发哈尔滨东安发动机有限公司 | A kind of radial direction asymmetric rotor dynamic balancing compensation method |
| EP3940361A4 (en) * | 2019-03-12 | 2022-12-14 | Beijing Syth Testing Co., Ltd | Method for acquiring unbalance amount of rotor, and method for acquiring unbalance amount of balancing machine |
-
2015
- 2015-07-07 CN CN201520485704.2U patent/CN204788804U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016184304A1 (en) * | 2015-05-19 | 2016-11-24 | 郭卫建 | Method for acquiring unbalance amount of rotor |
| US10928267B2 (en) | 2015-05-19 | 2021-02-23 | Beijing Syth Testing Co., Ltd. | Method for acquiring unbalance amount of rotor |
| WO2017162080A1 (en) * | 2016-03-22 | 2017-09-28 | 郭卫建 | Method for acquiring amount of unbalance of rotor |
| WO2017186062A1 (en) * | 2016-04-29 | 2017-11-02 | 郭卫建 | Method for obtaining position of mass centre of unbalanced weight |
| CN108489669A (en) * | 2018-03-23 | 2018-09-04 | 中国航发哈尔滨东安发动机有限公司 | A kind of radial direction asymmetric rotor dynamic balancing compensation method |
| EP3940361A4 (en) * | 2019-03-12 | 2022-12-14 | Beijing Syth Testing Co., Ltd | Method for acquiring unbalance amount of rotor, and method for acquiring unbalance amount of balancing machine |
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Effective date of registration: 20161228 Address after: 100085 Beijing, Haidian District, the west side of the song Fu Fang Park building, room 4, room 511 Patentee after: Dual Beijing Tianheng Testing Technology Co. Address before: 100085 Beijing, west of the AVON park on the ground floor, building 1, unit 101, room 1, room Patentee before: Guo Weijian Patentee before: Jiang Fang |