CN201069404Y - High-precision rotating model component load and torque measuring device - Google Patents
High-precision rotating model component load and torque measuring device Download PDFInfo
- Publication number
- CN201069404Y CN201069404Y CNU2007200800002U CN200720080000U CN201069404Y CN 201069404 Y CN201069404 Y CN 201069404Y CN U2007200800002 U CNU2007200800002 U CN U2007200800002U CN 200720080000 U CN200720080000 U CN 200720080000U CN 201069404 Y CN201069404 Y CN 201069404Y
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- driven shaft
- main drive
- drive shaft
- shaft
- flexure strip
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- 238000010168 coupling process Methods 0.000 claims abstract description 50
- 238000005859 coupling reaction Methods 0.000 claims abstract description 50
- 230000008878 coupling Effects 0.000 claims abstract description 48
- 238000005259 measurement Methods 0.000 abstract description 12
- 238000013461 design Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011089 mechanical engineering Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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Abstract
The utility model provides a rotatory model component load of high accuracy and torque measurement device, includes driving shaft (18), driven shaft (10), adorns rotor balance (9) on driven shaft (10) bearing frame, all is fixed with flange (12) of being connected driving shaft (18) and driven shaft (10) on driving shaft (18) and driven shaft (10), is connected with torque balance (11), characterized by between two flange (12): still be equipped with the elastic coupling between driving shaft (18) and driven shaft (10), and the elastic coupling is including being fixed in spline housing (16) on driving shaft (18) or driven shaft (10), overlaps one or more elastic sheet (14) on driving shaft (18) or driven shaft (10), and elastic sheet (14) are located between flange (12) and spline housing (16), are connected by connecting bolt (17) between spline housing (16) and flange (12).
Description
One, technical field
The utility model relates to a kind of rotating model stress measuring device, is specially high precision rotating model component load and torque-measuring apparatus.
Two, background technology
In some occasion, need accurately measure with the moment situation rotating model is stressed.Such as, lifting airscrew/FUSELAGE COMBINATION MODEL, be the simulation helicopter when various state of flight, measure six power and the moment components load of driving torque and rotor model, so that the aeroperformance of test and the different rotors of assessment helicopter.For this reason, the accuracy of these power and torgue measurement is most important, except each component load measurement balance (hereinafter to be referred as rotor balances) of high-precision torque measurement balance (hereinafter to be referred as torsion balance) and rotor is arranged, also need to overcome the influence of kinematic train that drives the rotor rotation to measuring.So the shaft coupling in torsion balance and the rotor balances test unit is had following 2 specific (special) requirements:
1. during the driving model rotorshaft, shaft coupling only transmits moment of torsion, does not transmit the sharing part of the load of (or few transmission) other direction.That is to say, the sharing part of the load of other direction is not produced interference, or make it little to the scope that can allow (as: 0.25%).Otherwise, also require the sharing part of the load of other directions not influence the measurement of moment of torsion.
2. when measuring rotor load, under the prerequisite that does not influence rotation, rotor shaft and rotating model require shaft coupling that enough torsional deflections (comprising axial line displacement and torsion angle displacement) are arranged, thereby do not influence load measurement.
Common mechanical engineering elastic coupling commonly used has: tire shaft coupling, the flexible shifting sleeve of NZ, hinge shaft coupling and small size universal-joint spindle etc.These shaft couplings are except weight/torque ratio is big; When transmitting moment of torsion, the transmitting movement that has is not accurate enough, friction that the existence that has is bigger and interference, thus seriously influenced measurement data.
Three, summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, designs a kind of high precision rotating model component load and torque-measuring apparatus.Particularly at the deficiency of common mechanical shaft coupling commonly used, design single-unit or binodal multiple spot drawing and pressing type elastic coupling are to guarantee the accuracy of parameter measurements such as forces associated and moment.
Basic ideas of the present utility model are: be provided with elastic coupling and link to each other between main drive shaft (18) and driven shaft (10), this elastic coupling mainly is made up of joint flange (12), pressure ring (13), multilayer elastic sheet (14), positioning adapter (15), spline housing (16), coupling bolt (17) etc.For making local elasticity's sheet not be subjected to eccentric load, the inside and outside garden radius of local elasticity's sheet is got identical value, i.e. R
1=R
2, and be symmetrical in the line of two contacts.
Concrete technical solution of the present utility model is:
A kind of high precision rotating model component load and torque-measuring apparatus, comprise main drive shaft (18), driven shaft (10), be loaded on the rotor balances (9) on driven shaft (10) bearing seat, on main drive shaft (18) and driven shaft (10), all be fixed with the joint flange (12) that is connected main drive shaft (18) and driven shaft (10), between two joint flanges (12), be connected with torsion balance (11), it is characterized in that: between main drive shaft (18) and driven shaft (10), elastic coupling is housed also, and elastic coupling comprises the spline housing (16) that is fixed on main drive shaft (18) or the driven shaft (10), be placed in the one or more flexure strips (14) on main drive shaft (18) or the driven shaft (10), flexure strip (14) is positioned between joint flange (12) and the spline housing (16), is connected by coupling bolt (17) between spline housing (16) and the joint flange (12).
Further scheme is: between flexure strip (14) and spline housing (16) positioning adapter (15) is housed also, between flexure strip (14) and joint flange (12) pressure ring (13) that cooperates with positioning adapter (15) is housed also.
Further scheme is: by the both sides of main drive shaft (18) and driven shaft (10) elastic coupling is housed all at torsion balance (11), symmetry has even number hole (1,2,3,4,5,6) on the equal circumference of flexure strip (14), wherein connection is passed by the coupling bolt of main drive shaft (18) one sides (17) in the hole (1,3,5) on the flexure strip (14) of main drive shaft (18) one sides, and connection is passed by the coupling bolt of driven shaft (10) one sides (17) in the hole (2,4,6) on the flexure strip (14) of driven shaft (10) one sides.
Further scheme is again: the line symmetry between lateral surface between last two the adjacent holes of flexure strip (14) and medial surface and two the adjacent holes, i.e. R
1=R
2
This design is equivalent to main drive shaft (18) is linked to each other with one group of flexure strip with driven shaft (10), and wherein contact 1,3,5 links to each other with main drive shaft, contact 2,4, and 6 link to each other with driven shaft.During design, the inside and outside garden radius of local elasticity's sheet is got identical value, i.e. R
1=R
2And the line that is symmetrical in two contacts is in order to make local elasticity's sheet not be subjected to eccentric load.When transmitting moment of torsion, whole flexure strip is separated between the contact 1 to 6, local elasticity's sheet of totally 3 tensions between 5 to 4, between 3 to 2, and local elasticity's sheet of 3 pressurizeds between the contact 1 to 2, between 3 to 4, between 5 to 6.When the torsion pass direction changed, both exchanged.To form binodal multiple spot (hole) the drawing and pressing type elastic coupling of better effects if.
The utility model is not only applicable to the assembly of two these elastic couplings and middle torsion balance composition is installed on rotor balances 9 lower ends, also is applicable to this assembly is installed in the middle place of rotor balances.
In the utility model, rotor balances (9) generally adopt the boxlike strain balance, and torsion balance (11) generally adopts moment of torsion shaft type strain balance.
The utility model has the advantages that: the practice by 6 tension and compression, individual layer and multilayer elastic shaft couplings on probation on moment of torsion and rotating model component load-measuring device shows that balance correction and linearity, the repeatability used are all fine; Wherein the fatigue resistance of individual layer flexure strip is relatively poor, damages easily; The multilayer elastic sheet not only makes elastic restoring force reduce, and has improved fatigue lifetime, and has improved processability and economy.
Four, description of drawings
Fig. 1 is the structural drawing of high precision moment of torsion and rotating model component load-measuring device.
Among the figure: 8-rotating model, 9-rotor balances, 10-driven shaft, 11-torsion balance, 12-joint flange, 13-pressure ring, 14-multilayer elastic sheet, 15-positioning adapter, 16-spline housing, 17-coupling bolt, 18-main drive shaft.
Fig. 2 is the promptly many group flexure strips of the I district partial enlarged drawing positioning and mounting structure figure of Fig. 1.
Among the figure: 13-pressure ring, 14-multilayer elastic sheet, 15-positioning adapter, 16-spline housing, 17-coupling bolt.
Fig. 3 six selects drawing and pressing type flexure strip structure diagram.
Among the figure: 1-contact (hole) 1,2-contact (hole) 2,3-contact (hole) 3,4-contact (hole) 4,5-contact (hole) 5,6-contact (hole) 6,7-local elasticity sheet, garden, R-contact center radius, the interior garden radius of R1-local elasticity sheet, the outer garden radius of R2-local elasticity sheet, bmin is the minimum widith between adjacent contact.
Five, embodiment
Below in conjunction with accompanying drawing the utility model is done detailed description.
As Fig. 1 and Fig. 2, a kind of high precision rotating model component load and torque-measuring apparatus, comprise main drive shaft 18, driven shaft 10, be loaded on the rotor balances 9 on driven shaft 10 bearing seats, on main drive shaft 18 and driven shaft 10, all be fixed with the joint flange 12 that is connected main drive shaft 18 and driven shaft 10, between two joint flanges 12, be connected with torsion balance 11, between the joint flange 12 of main drive shaft 18 and the main drive shaft 18 and between the joint flange 12 of driven shaft 10 and driven shaft 10 elastic coupling is being housed all, and elastic coupling comprises and is fixed in main drive shaft 18, spline housing 16 on the driven shaft 10, be placed in main drive shaft 18, a plurality of flexure strips 14 on the driven shaft 10, flexure strip 14 is connected by coupling bolt 17 between spline housing 16 and the joint flange 12 between joint flange 12 and spline housing 16.Between flexure strip 14 and spline housing 16, positioning adapter 15 is housed also, between flexure strip 14 and joint flange 12, the pressure ring 13 that cooperates with positioning adapter 15 is housed also.Symmetry has 6 holes 1,2,3,4,5,6 on the equal circumference of flexure strip 14, wherein connection is passed by the coupling bolt 17 of main drive shaft 18 1 sides in the hole 1,3,5 on the flexure strip 14 of main drive shaft 18 1 sides, and connection is passed by the coupling bolt 17 of driven shaft 10 1 sides in the hole 2,4,6 on the flexure strip 14 of driven shaft 10 1 sides.Line symmetry between lateral surface on the flexure strip 14 between two adjacent holes and medial surface and two the adjacent holes, i.e. R
1=R
2When transmitting moment of torsion, whole flexure strip is separated between the contact 1 to 6, local elasticity's sheet of totally 3 tensions between 5 to 4, between 3 to 2, and local elasticity's sheet of 3 pressurizeds between the contact 1 to 2, between 3 to 4, between 5 to 6.When the torsion pass direction changed, both exchanged.During test, rotating model 8 is loaded on driven shaft 10 tops.
Elasticity shaft coupling special construction design described in the utility model and intensity and stability are checked: calculate the contact center garden radius R of flexure strip 14 and the minimum widith bmin and the thickness of local flexure strip 14 according to the peak torque Mk that transmission shaft transmitted.Check by antitorque degree of stability, by flexure strip 14 be: below 0.01 degree in the torsional angle that the amount of tension of local elasticity's sheet 14 under the effect of moment of torsion Mk calculates between main drive shaft 18 and the driven shaft 10, as seen, 6 drawing and pressing type elastic couplings are a kind of desirable torsion pass shaft couplings.
The compensation of deviation between main drive shaft 18 and the driven shaft 10.When between main drive shaft 18 and driven shaft 10, having radial missing,, thereby just can not obtain enough compensation because the radial rigidity of this shaft coupling is very big.So two single-unit elastic couplings are together in series, utilize two inclination deviations to realize the compensation of radial missing, i.e. 6 drawing and pressing type elastic couplings of applied binodal in the utility model.This shaft coupling can with driven shaft 10 with respect to the optional position of main drive shaft 18 relation all be decomposed into axially, the combination of radial line deviation and inclination deviation, and driven shaft 10 is overcome with respect to power and the moment that the optional position deviation of main drive shaft 18 produces, thereby the influence of balance measurement data is reached minimum by elastic deformation.
The utility model is to the installation requirement of elastic coupling: with positioning adapter 15 external diameters that are connected with multilayer elastic sheet 14 contacts and the end face unique point when adjusting.Public circumscribed circle and end face that 3 locating sleeve external diameters below the adjustment upper spline cover ring flange are formed make circumscribed circle coaxial with driven shaft 10, and end face is vertical with driven shaft 10; Adjust the public circumscribed circle and the end face of 3 locating sleeves compositions above spline housing 16 ring flanges down, make circumscribed circle coaxial with main drive shaft 18, end face is vertical with main drive shaft 18.Under the situation that structure allows, adopt an axle head to fix, the fit that another axle head cunning is joined can be avoided the influence of primitive axis to erection stress.
This elastic coupling is very big in the stability of transmitting torque direction as can be known by checking, and axial degree of stability and inclination angle degree of stability are very little, and this is desirable when we design just.Simultaneously find that in our checking computations process the antitorque degree of stability of this elastic coupling is directly proportional with the thickness δ of single flexure strip, axial degree of stability and inclination angle degree of stability then with δ
3Be directly proportional, so, suitable reduce the δ value and can reduce axial degree of stability and inclination angle degree of stability more.In addition, through strength check, the safety coefficient of this elastic coupling adheres to specification greater than 2.
This elastic coupling in the use result of helicopter testing table is: the measuring accuracy of rotor balances and torsion balance all reaches more than 5 ‰, thereby prove that this elastic coupling is in the process of torsion pass, to measuring system except less influence is arranged, also has reproducibility, so have higher transmitting accuracy.
6 drawing and pressing type elastic couplings of the high torsion pass rigidity of this high precision binodal are applicable to being connected of any main drive shaft and driven shaft, and in the measurement of this driving torque and in the measurement of six component force of rotary part and moment, play key effect especially, can influence drops to minimum to measurement data owing to transmission shaft is installed the axial force that produces and moment of flexure.Be particularly useful for shaking the kinematic train that error in mounting position big and main drive shaft and driven shaft is difficult to guarantee.
Claims (4)
1. high precision rotating model component load and torque-measuring apparatus, comprise main drive shaft (18), driven shaft (10), be loaded on the rotor balances (9) on driven shaft (10) bearing seat, on main drive shaft (18) and driven shaft (10), all be fixed with the joint flange (12) that is connected main drive shaft (18) and driven shaft (10), between two joint flanges (12), be connected with torsion balance (11), it is characterized in that: between main drive shaft (18) and driven shaft (10), elastic coupling is housed also, and elastic coupling comprises the spline housing (16) that is fixed on main drive shaft (18) or the driven shaft (10), be placed in the one or more flexure strips (14) on main drive shaft (18) or the driven shaft (10), flexure strip (14) is positioned between joint flange (12) and the spline housing (16), is connected by coupling bolt (17) between spline housing (16) and the joint flange (12).
2. high precision rotating model component load according to claim 1 and torque-measuring apparatus, it is characterized in that: between flexure strip (14) and spline housing (16), positioning adapter (15) is housed also, between flexure strip (14) and joint flange (12), the pressure ring (13) that cooperates with positioning adapter (15) is housed also.
3. high precision rotating model component load according to claim 1 and 2 and torque-measuring apparatus, it is characterized in that: by the both sides of main drive shaft (18) and driven shaft (10) elastic coupling is housed all at torsion balance (11), symmetry has even number hole (1 on the equal circumference of flexure strip (14), 2,3,4,5,6), the hole (1 on the flexure strip (14) of main drive shaft (18) one sides wherein, 3,5) passed connection by the coupling bolt of main drive shaft (18) one sides (17), the hole (2 on the flexure strip (14) of driven shaft (10) one sides, 4,6) passed connection by the coupling bolt of driven shaft (10) one sides (17).
4. high precision rotating model component load according to claim 3 and torque-measuring apparatus is characterized in that: the line symmetry between lateral surface between last two the adjacent holes of flexure strip (14) and medial surface and two the adjacent holes, i.e. R
1=R
2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200800002U CN201069404Y (en) | 2007-06-22 | 2007-06-22 | High-precision rotating model component load and torque measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200800002U CN201069404Y (en) | 2007-06-22 | 2007-06-22 | High-precision rotating model component load and torque measuring device |
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| Publication Number | Publication Date |
|---|---|
| CN201069404Y true CN201069404Y (en) | 2008-06-04 |
Family
ID=39490793
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200800002U Expired - Fee Related CN201069404Y (en) | 2007-06-22 | 2007-06-22 | High-precision rotating model component load and torque measuring device |
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| Country | Link |
|---|---|
| CN (1) | CN201069404Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108398230A (en) * | 2017-12-29 | 2018-08-14 | 中国航天空气动力技术研究院 | A kind of six COMPONENT BALANCE of chip applied to aircraft component dynamometry |
| CN111175014A (en) * | 2020-02-28 | 2020-05-19 | 中国空气动力研究与发展中心低速空气动力研究所 | Balance system and method for accurately measuring rotor wing pneumatic load |
-
2007
- 2007-06-22 CN CNU2007200800002U patent/CN201069404Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108398230A (en) * | 2017-12-29 | 2018-08-14 | 中国航天空气动力技术研究院 | A kind of six COMPONENT BALANCE of chip applied to aircraft component dynamometry |
| CN111175014A (en) * | 2020-02-28 | 2020-05-19 | 中国空气动力研究与发展中心低速空气动力研究所 | Balance system and method for accurately measuring rotor wing pneumatic load |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080604 Termination date: 20130622 |