CN109823568A - A kind of aircraft blade torque automatic measurement system - Google Patents
A kind of aircraft blade torque automatic measurement system Download PDFInfo
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- CN109823568A CN109823568A CN201910104390.XA CN201910104390A CN109823568A CN 109823568 A CN109823568 A CN 109823568A CN 201910104390 A CN201910104390 A CN 201910104390A CN 109823568 A CN109823568 A CN 109823568A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The present invention provides a kind of aircraft blade torque automatic measurement systems, including testing jig, rotating device, torque measuring device；Testing jig includes test frame, testing jig bottom plate and the mandrel for fixing blade to be measured, and test frame is fixed on testing jig bottom plate upper bottom surface, and mandrel is fixed on test frame and rotates along the horizontal rotary shaft with ground；Rotating device includes rotary bracket, swivel bearing, rotation drive device, and rotary bracket and testing jig bottom plate floating connection, the inner ring of swivel bearing are fixedly connected with rotary bracket, rotary shaft driving rotary bracket rotation of the rotation drive device perpendicular to ground；Force moment testing device includes balancing side test plate (panel), the sensor being fixedly connected with the outer ring of swivel bearing, and sensor is included in the front sensor and rear sensor of same level and front and back setting, balancing side test plate (panel) bottom surface and sensor contacts.
Description
Technical field
The present invention relates to the tests of helicopter screw propeller leaf and trim technology, especially a kind of aircraft blade torque automatic measurement
System.
Background technique
The equilibrium problem of helicopter screw propeller is directly related to the shafting vibration of aircraft, the vibration of body and flight peace
Entirely.Therefore just seem in the equilibrium problem how propeller manufacture solves propeller in the process and be even more important.Propeller must be through
Overbalance measurement, can just be assembled on aircraft, guarantee the flight stability and flight safety of helicopter.
The helicopter screw propeller leaf of standard is made of propeller hub and blade, can be carried out to it after finishing is completed and is assembled
Whole machine balancing measurement.But the propeller hub of propeller and blade are to cast and process respectively, therefore need respectively to propeller hub and blade
First carry out static balance measurement.Since blade is not on propeller paddle shaft center line, and shape is irregular.Control be mounted on it is same
The difference of different blade torques on propeller hub reaches the interchangeability of blade in the maximum allowable range of design, it is necessary to
Accurate static balance measurement is carried out to blade, it is believed that blade equalising torque is the primary condition of propeller balance, balance
Measurement method and maximum allowable degree of unbalancedness are directly related to the balance of entire propeller.Therefore, it is necessary to carry out to blade torque
High-efficiency high-accuracy measurement method, to ensure the reliable implementation of blade static-balance adjustment.
As shown in figure 12, the trimming moment of blade is propeller total weight and propeller mass center to propeller rotation center
The product of distance (eccentricity).Blade torque is by the big axis torque of blade (the big square of blade) and the small axis torque of blade (the small square of blade)
Composition, wherein the big square of blade be blade weight and blade mass center on blade mounting axis direction at a distance from rotation center it
Product, the small square of blade be blade weight with blade mass center to the product at a distance from blade mounting axis.G is the matter of blade in Figure 12
The heart, MOGFor the torque of blade, MOXFor the big square of blade, MOYFor the small square of blade.The uneven angle value blade and standard blade of blade are flat
The deviation situation for the torque that weighs, the deviation size of the trimming moment and standard blade that need to usually guarantee blade is necessarily less than maximum allowable
Degree of unbalancedness M.
MOG=GeOG
The static balance measurement of propeller blade is exactly the measurement to the quality of single paddle, the big square of blade, the small square of blade.It is right
Usually there are two types of test philosophies for blade static-balance measurement: (1) Absolute Measurement principle directly measures the balancing a survey of tested blade
Method；(2) comparative method for measuring principle, the balancing a survey method being compared using tested blade with standard blade.It generallys use
Absolute Measurement determines the numerical value of standard blade, and the equalising torque measurement of blade is then completed by comparing method.
The measurement of blade equalising torque is different according to selected means, can be divided into balance equalising torque mensuration and sensing
2 kinds of methods of device equalising torque mensuration.It still largely uses balance equalising torque mensuration both at home and abroad at present, is measured by counterweight
The numerical value of blade realizes the survey of blade torque by the position of suspension standard test weight and mobile counterweight using Balance principle
Amount, that there are measuring accuracies is low for this method, and testing efficiency is low, and personnel's operation factors influence big, and test repeatability is difficult to ensure；With
Is there is sensor torque balancing a survey method, the torque number of blade is directly measured using load cell in the development of measuring technology
According to, but blade torque sensor test method there are still measuring accuracies low, repeatability big using single measurement randomness at present
Difference.
Therefore, in current blade torque test and trim field, there is measuring accuracies low, poor repeatability, test
The big problem of the influence that blade torque is tested in low efficiency, personnel's operation, it is difficult to the measurement of high-efficiency high-accuracy realization blade torque
With adjustment.
Summary of the invention
The purpose of the present invention is to provide a kind of aircraft blade torque automatic measurement system, the big square of blade, small may be implemented
The high-efficiency high-accuracy of square measures.
Realize the technical solution of the object of the invention are as follows: a kind of aircraft blade torque automatic measurement system, including testing jig, rotation
Rotary device, torque measuring device；Testing jig includes test frame, testing jig bottom plate and the mandrel for fixing blade to be measured, is surveyed
Examination frame is fixed on testing jig bottom plate upper bottom surface, and mandrel is fixed on testing jig bottom plate and turns along the horizontal rotary shaft with ground
It is dynamic；Rotating device includes rotary bracket, swivel bearing, rotation drive device, rotary bracket and testing jig bottom plate floating connection, rotation
The inner ring that shaft is held is fixedly connected with rotary bracket, rotary shaft driving rotary bracket rotation of the rotation drive device perpendicular to ground
Turn；Force moment testing device includes balancing side test plate (panel), the sensor being fixedly connected with the outer ring of swivel bearing, and sensor is included in together
One horizontal plane and the front sensor and rear sensor of front and back setting, balancing side test plate (panel) bottom surface and sensor contacts.
Using above system, testing jig further include test frame, rotating device attachment base, profiling fixture, tooling mounting plate,
Tooling mounting plate, stripped nut, positioning pin, fixes sleeve, locking positioning pin, index dial；Test frame is fixed on testing jig
Bottom plate upper bottom surface, rotating device attachment base are set to testing jig bottom plate bottom surface, are arranged on rotary bracket and connect with rotating device
The testing jig connection stabilizer blade that seat matches, fixes sleeve are fixed on test frame upper surface, and tooling mounting plate one end is fixed on
On mandrel and parallel with testing jig bottom plate, profiling fixture is set to the tooling mounting plate upper surface other end, and index dial is set to solid
Determine on sleeve rear wall, mandrel passes through the through-hole of fixes sleeve and index dial, and stripped nut is placed on mandrel, positioning pin setting
In in dowel hole, locking positioning pin passes through fixes sleeve and mandrel cooperates in mandrel.
Using above system, torque measuring device includes balance test frame, force moment testing device, safety guard, bullet
Property support device, system balancing device；Balance test frame includes balancing side test plate (panel), the preceding revolution edge of a knife, preceding revolution edge of a knife seat, rear time
Rotor mouth, rear revolution edge of a knife seat；Revolution edge of a knife seat and being set on platform before and after rear revolution edge of a knife seat, preceding flying knife before wherein
Mouth upper end is fixed on balancing side test plate (panel) lower end surface and lower end is contacted with preceding revolution edge of a knife seat groove, and rear edge of a knife upper end of turning round is fixed on
Balancing side test plate (panel) lower end surface and lower end are contacted with rear revolution edge of a knife seat groove；Force moment testing device includes sensor foot, sensing
Cushion block, front sensor, rear sensor, sensor backing plate on device, sensor foot are fixed on balancing side test plate (panel) bottom surface, sensor
Upper cushion block is fixed on sensor foot lower end, and front sensor, rear sensor are set to sensor backing plate by sensor connecting plate
On, sensor backing plate can be moved forward and backward on platform；Safety guard includes adjustable support seat, jacking screw rod, handwheel, adjustable
Supporting block, adjustable support seat are fixed at the nearly force moment testing device in platform upper surface, and adjustable supporting bracer is fixed and and adjustable supports
Gap is set between seat, handwheel is set in gap, and jacking screw rod passes through adjustable support seat, handwheel and adjustable supporting bracer, jacking
Screw rod is connect by oiliness bearing with adjustable supporting bracer, and jacking screw rod is threadedly coupled with handwheel；Resilient supporting unit includes support
Seat, spring damping vibration isolator, support base be fixed on platform upper surface far from force moment testing device at, spring damping vibration isolator lower end
It is fixed on support base and upper end is located at below balancing side test plate (panel).
Using above system, torque measuring device further includes system balancing device, system balancing device include stepper motor,
Installation casing, screw rod, bearing block, clump weight, fixing seat；Installation casing is fixed on balancing side test plate (panel) lower end surface and closely flexibly supports dress
Place is set, stepper motor is set to outside installation casing, and screw rod is set in installation casing, and screw rod one end and stepper motor protrude into peace
The rotating output shaft connection of vanning body and the other end are connect with being fixed on the intracorporal fixation of installs case and do by bearing, clump weight and
Wire rod thread connection.
It further include lifting protector using above system, lifting protector includes left lifting platform, right lifting platform, a left side
Lifting platform and right lifting platform include guide rod, turbine lift, linear bearing；The elevator that turbine lift is set to platform is logical
In hole, linear bearing is fixed on platform bottom surface, and guide rod passes through turbine lift and connect with linear bearing；Left lifting platform and right liter
Guide rod in drop platform topmost always flushes and guide rod is located at the lower section of testing jig.
Compared with prior art, the present invention (1) measuring accuracy height is had the advantage that, by adjusting paddle in test process
Leaf is in several working positions, and the single random measurement of traditional blade torque is changed into multiple dynamic one-point measurement, passes through difference
The matter deviator of blade to be measured is calculated in value, reduces system testing error, increases substantially blade torque measuring accuracy, leads to simultaneously
Cross the high-precision trim that theoretical calculation realizes blade trimming moment；(2) reproducible, system realizes paddle using Serve Motor Control
The high accuracy positioning of blade test position is realized in the adjustment of four test stations of leaf, error caused by avoiding personnel from operating, test
System station consistency is good, can effectively ensure that the repeatability of system testing；(3) high degree of automation is controlled real using system
The test of existing blade torque controls the lifting for realizing testing jig, the movement and system balancing of servo motor by system, tested
Personnel are reduced in journey to participate in, and are improved the automatization level of system, are improved blade torque testing efficiency.
The invention will be further described with reference to the accompanying drawings of the specification.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of aircraft blade torque automatic measurement system of the present invention.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the attached view of Fig. 1.
Fig. 4 is the overall assembling structural schematic diagram of blade to be measured Yu blade torque automatic measurement system.
Fig. 5 is installation positioning mechanism structural schematic diagram.
Fig. 6 is 31 structural schematic diagram of balance test frame.
Fig. 7 is safety guard detail drawing in Fig. 1.
Fig. 8 is system balancing device detail drawing in Fig. 1.
Fig. 9 is aircraft blade torque test schematic of the present invention.
Figure 10 is aircraft blade height of the present invention direction mass center test schematic diagram.
Figure 11 is aircraft blade torque measuring and calculation schematic illustration of the present invention.
Figure 12 is that the trimming moment of blade calculates schematic diagram.
Specific embodiment
In conjunction with Fig. 1, Fig. 2, Fig. 3, Fig. 4, a kind of aircraft blade torque automatic measurement system, including testing jig 1, rotating device
2, torque measuring device 3, lifting protector 4 and test platform 5.The testing jig 1 is for installing fixed blade to be measured；Rotation
Device 2 realizes the adjustment of blade test station for realizing the automatic rotation of blade torque to be measured；Torque measuring device 3 is used for
It realizes the measurement of blade trimming moment, while can realize the autobalance of test macro；Lifting protector 4 is for realizing test
The safety lifting of frame 1, direct impact when avoiding installing blade to be measured cause to damage to test sensor；Test platform 5 is used for
Bearing test frame 1, rotating device 2, torque measuring device 3, lifting protector 4 and blade to be measured are whole measurement adjustment dresses
The installation support platform set.
In conjunction with Fig. 1,2,5, testing jig 1 includes testing jig frame 11, lifting protector attachment base 12, testing jig bottom plate
13, rotating device attachment base 14, profiling fixture 15, tooling mounting plate 16, installation positioning mechanism 17；The installation positioning mechanism 17
Including stripped nut 171, positioning pin 172, mandrel 173, fixes sleeve 174, locking positioning pin 175, index dial 176.Test
Frame 11 is fixed on 13 upper bottom surface of testing jig bottom plate.Lifting protector attachment base 12 is arranged two and is individually fixed in Fig. 1
The left and right ends of 11 lower end surface of testing jig frame.Rotating device attachment base 14 is set to 13 bottom surface of testing jig bottom plate.Rotation support
It is arranged on frame 21 and connect stabilizer blade 22 with the testing jig that rotating device attachment base 14 matches.174 lower end surface of fixes sleeve is fixed on
On 11 upper surface of test frame, the setting of fixes sleeve 174 is higher than the protrusion of test frame 11, and the protrusion is from the right and left along Fig. 1
To axis be arranged through-hole.16 one end of tooling mounting plate is fixed on the left side wall of fixes sleeve 174 and flat with testing jig bottom plate 13
Row.Profiling fixture 15 is identical as blade shape to be measured, and for carrying blade, profiling fixture 15 is set to 16 upper end of tooling mounting plate
The face other end.Index dial 176 is set on 174 rear wall of fixes sleeve.Mandrel 173 passes through fixes sleeve 174 and index dial 176
Through-hole, stripped nut 171 is placed on mandrel 173, and positioning pin 172 is set in mandrel 173 in dowel hole, mandrel 173
Four locking positioning pin holes are uniformly distributed circumferentially, locking positioning pin 175 passes through fixes sleeve 174 and mandrel 173 cooperates, and works as core
When axis 173 is rotated on a certain working position, locking positioning pin 175 is inserted into locking positioning pin hole and locking mandrel 173.
The testing jig frame 11 is the mounting bracket of blade to be measured, and lifting protector attachment base 12 is placed in testing jig frame
Below frame, for realizing the connection with lifting protector 4, testing jig bottom plate 13 is placed in 11 lower section of testing jig frame, with test
Frame frame 11 is fixedly connected, and rotating device attachment base 14 is placed under testing jig bottom plate 12, for realizing the company with rotating device 2
It connects, tooling mounting plate 16 and installation positioning mechanism 17 are fixed, and profiling fixture 15 is mounted on tooling mounting plate 16, for realizing paddle
Leaf support, installation positioning mechanism 17 be mounted on testing jig frame 11 by mounting hole, can around mounting hole axis relative to
Testing jig frame 11 turns round, and 171 sets of stripped nut on mandrel 173, are joined with blade to be measured by screw thread when product is installed
The installation of solid existing blade to be measured is fixed, and positioning pin 172 is placed among mandrel 173, for realizing blade Installation posture to be measured
Positioning, mandrel 173 are the installation locating shaft of blade to be measured, and the end face of mandrel 173 is the positioning reference plane of blade to be measured, pass through axis
The installation positioning of blade to be measured is realized in line and end face, and fixes sleeve 174 is for realizing installation positioning mechanism 17 and testing jig frame
11 connection, locking pin 175 for lock installation positioning mechanism 17, index dial 176 for realizing installation positioning mechanism relative to
The determination of the angle of revolution of testing jig frame 11, prevent blade under fc-specific test FC station around mounting hole relative to testing jig frame
11 rotations.
In conjunction with Fig. 1,2, rotating device 2 includes rotary bracket 21, swivel bearing 23, rotation drive device 24.Rotary bracket
21 are fixedly connected with 13 floating connection of testing jig bottom plate, the inner ring of swivel bearing 23 with rotary bracket 21, rotation drive device 24
It is fixedly connected perpendicular to the rotary shaft on ground with rotary bracket 21.Testing jig connection stabilizer blade 22 is placed on rotary bracket 21, is used
In the connection with testing jig, swivel bearing 23 is placed under rotary bracket, and bearing inner race and rotary bracket 21 are fixed, bearing
Outer ring is fixedly connected with torque measuring device device 3, and rotation drive device 24 is placed in below rotary bracket, and rotation drive device is driven
Dynamic rotary bracket is rotated around the axis of swivel bearing 23, realizes the adjustment of blade test station to be measured, is the rotation of rotating device 2
Driving power is provided.
In conjunction with Fig. 1,2,6,7,8, the torque measuring device 3 includes balance test frame 31, force moment testing device 32, safety
Protective device 33, resilient supporting unit 34, system balancing device 35.31 top of balance test frame and the rotation in rotating device 2
Bearing outer ring is fixedly connected, and carries the weight and load of its all components in top, and force moment testing device 32 is placed in balance test
The lower section of frame 31, for realizing the measurement of blade torque, safety guard 33 and resilient supporting unit 34 are symmetrically distributed in flat
It weighs below testing jig 31, safety guard 33 is used to prevent the excessive load in testing jig 1 and 2 contact process of rotating device from damaging
Bad test sensor, resilient supporting unit 34 are used for stable equilibrium's testing jig 31, prevent balance test frame 31 from toppling, system balancing
Device 35 is fixed on balance test frame 31, and the balance of mass of system is realized by adjusting its clump weight position.
Balance test frame 31 includes balancing side test plate (panel) 311, the preceding revolution edge of a knife 312, preceding revolution edge of a knife seat 313, rear flying knife
Mouth 314, rear revolution edge of a knife seat 315.Being set on platform 51 before and after preceding revolution edge of a knife seat 313 and rear revolution edge of a knife seat 315, it is preceding
Revolution 312 upper end of the edge of a knife is fixed on 311 lower end surface of balancing side test plate (panel) and lower end is contacted with preceding 313 groove of revolution edge of a knife seat, rear to return
311 lower end surface of balancing side test plate (panel) is fixed in 314 upper end of rotor mouth and lower end is contacted with rear revolution 315 groove of edge of a knife seat.Balancing side
Test plate (panel) 311 is under the action of the preceding revolution edge of a knife 312, preceding revolution edge of a knife seat 313, the rear revolution edge of a knife 314, rear revolution edge of a knife seat 315
It can be rotated relative to the line of front and back knife edge contact position.
Force moment testing device 32 includes cushion block 322, front sensor 323, front sensor on sensor foot 321, sensor
Connecting plate 324, rear sensor 325, rear sensor connecting plate 326, sensor backing plate 327, left rail and sliding block 328, right guide rail
And sliding block 329.Sensor foot 321 is fixed on 311 bottom surface of balancing side test plate (panel), and cushion block 322 is fixed on sensor on sensor
321 lower end of stabilizer blade, front sensor 323, rear sensor 324 are set in Fig. 1 on sensor backing plate 327 by sensor connecting plate
Rear and front end, sensor backing plate 327 can be moved forward and backward on platform 51,327 lower section of sensor backing plate and left rail and sliding block
328, right guide rail and sliding block 329 are fixedly connected.Sensor foot 321 will lead to from the load of balance test frame 31 and its top
It crosses sensor upper padding plate 322 and acts on the front sensor 323 of parallel arrangement, on rear sensor 325, front sensor 323, rear sensing
Load of the device 325 by measurement measurement effect above it, realizes the measurement to blade torque to be measured.Sensor backing plate 327 can
To slide back and forth along guide rail, for realizing the adjustment of sensor position and the protection of sensor, test macro installation process is avoided
Middle excessive load effect leads to the damage of sensor on a sensor.
Safety guard 33 includes adjustable support seat 331, jacking screw rod 332, handwheel 333, adjustable supporting bracer 335.It can
Support base 331 is adjusted to be fixed at the nearly force moment testing device 32 in 51 upper surface of platform, adjustable supporting bracer 335 is fixed and and adjustable supports
Gap is set between seat 331, handwheel 333 is set in gap, and jacking screw rod 332 passes through adjustable support seat 331,333 and of handwheel
Adjustable supporting bracer 335, jacking screw rod 332 are connect by oiliness bearing 334 with adjustable supporting bracer 335, and screw rod 332 and handwheel are jacked
It is threadedly coupled.The elevating movement that jacking screw rod 332 may be implemented by rotation hand wheel 333 rises shape when jacking screw rod 332 is in
Balance test frame is jacked up when state, is detached from sensor foot 321 and sensor.
Resilient supporting unit 34 includes support base 341, spring damping vibration isolator 342.Support base 341 is fixed on platform 51
End face far from force moment testing device 32 at, 342 lower end of spring damping vibration isolator be fixed on support base 341 and upper end be located at balance
311 lower section of test board.When safety guard 33 is under upper station state, the jacking screw rod 332 of safety guard 33 with
Balance test frame 31 contacts, and balance test frame 31 is rotated around its edge of a knife axis, and the other side of the balance test frame edge of a knife and elasticity are propped up
Support arrangement 34 contacts, compressed spring damping isolator 342, and support base 341 is placed in below spring damping vibration isolator, realizes to spring
The support of damping isolator.
System balancing device 35, system balancing device 35 include stepper motor 351, installation casing 353, screw rod 354, bearing
Seat 355, clump weight 356, fixing seat 357.Installation casing 353 is fixed on the nearly resilient supporting unit in 311 lower end surface of balancing side test plate (panel)
At 34, stepper motor 351 is set to outside installation casing 353, and screw rod 354 is set in installation casing 353,354 one end of screw rod
Connect with the rotating output shaft that stepper motor 351 protrudes into installation casing 353 and the other end be fixed on consolidating in installation casing 353
Customized 357 are connected by bearing, and clump weight 356 is threadedly coupled with screw rod 354.Slowed down by stepper motor 351 and stepper motor
, it can be achieved that lead screw 354 is around the rotation of its axis, clump weight 356 is threadedly coupled the driving of device 352 with lead screw 354T type, can be along silk
The movement of 354 thick stick axis directions, and then balance system.
In conjunction with Fig. 1, the lifting protector 4 includes left lifting platform 41, universal driving shaft 42, lifting stepper motor 43, turbine
Speed reducer 44, right lifting platform 45, left lifting platform 41 and right lifting platform 45 are symmetrically arranged, can move up and down, and realize test
The conversion of system station, universal driving shaft link for realizing left lifting platform 41 and right lifting platform 45, guarantee left and right lifting platform movement speed
Spend, the rotation of lifting stepper motor 43 and worm speed reducer 44 driving universal driving shaft consistent with movement position.The left lifting platform 41
Including left guide rod 411, left turbine and worm elevator 412, left elevator mounting plate 413, left connection board 414, left linear bearing
415, left elevator mounting plate 413 is mounted on 5 lower section of test platform, and left turbine lift 412 is fixed on left elevator mounting plate
413 lower sections, left connection board 414 are placed in 412 lower section of turbine lift, and left linear bearing 415 is connected with test platform 5, left guide rod
411 can move up and down under the action of left turbine and worm elevator 412 and left linear bearing 415, realize test macro station
Conversion.The right lifting platform 45 includes right guide rod 451, right turbine and worm elevator 452, right elevator mounting plate 453, right company
Fishplate bar 454, right linear bearing 455, connection type are identical as left lifting platform 41.Lifting stepper motor 43 is fixed on platform 51,
The output axis connection of worm speed reducer 44 and lifting stepper motor 43,42 input terminal of universal driving shaft are connect and two with worm speed reducer 44
A output end is threadedly coupled with two guide rods respectively.
In conjunction with Fig. 1, the test platform 5 includes platform 51, rack 52, level-off lower margin 53, and platform 51 is placed in rack 52
Top, level-off lower margin 53 are placed in 52 lower section of rack.
1 lower section of testing jig and 4 floating connection of rotating device 2 and lifting protector, when lifting protector 3 is in
When upper station, testing jig 1 and rotating device 2 are detached from, and testing jig 1 is contacted with lifting protector 4, and testing jig 1 is protected by lifting
Protection unit 4 supports.When lifting protector 4 is in lower station, testing jig 1 and lifting protector 4 are detached from, testing jig 1 with
Rotating device 2 contacts, and testing jig 1 is supported by rotating device 2, realizes the measurement to blade torque to be measured.Rotating device 2 is placed in
On torque measuring device 3, rotating device 2 can be rotated relative to torque measuring device, realize the tune of blade test station to be measured
Whole, torque measuring device 3 is placed on test platform 4, and lifting protector 4 is fixed on test platform.
The test method of this system includes preparation, adjustment installment work, test job and round-off work.
(1) preparation:
Step 1.1, adjustment rotating device makes rotary bracket and testing jig to just, guarantees that testing jig and rotating device can
By contact；
Step 1.2, the profiling fixture of blade is installed in place, adjusts system balancing device, guaranteed 4 under system light condition
The measured value of a test station position sensor is almost the same, and the lower 4 test station position sensings of test record light condition
The measured value of device；
Step 1.3, lifting protector is adjusted to upper station, contacts testing jig with lifting protector.
(2) installment work is adjusted:
Step 2.1, the setting angle for adjusting mandrel is directed at the graduation mark of mandrel with 0 degree of graduation mark of index dial, and
Mandrel is locked by locking pin；
Step 2.2, the installation interface of blade is connect with the mandrel of installation positioning mechanism, and blade is determined by positioning pin
Installation posture；
Step 2.3, by spiral marking connection that locking nut is relatively fixed with blade；
Step 2.4, lifting protector is adjusted to lower station, testing jig and lifting protector are detached from, testing jig with
Rotating device contacts
(3) test job:
Step 3.1, safety guard is slowly adjusted, the jacking screw rod and resilient supporting unit of safety guard are made
Spring damping vibration isolator and balance test frame are detached from, and contact sensor foot with sensor upper junction plate, system enters test
State；
Step 3.2, the measurement of blade big square, narrow spacing: by rotation drive device realization rotary bracket relative to balance
The rotation of testing jig obtains blade and acts on amount of force on a sensor under 4 orientation modes, by data acquisition,
Difference calculates, and obtains big square and small square of the blade around propeller shaft；Angle between operated adjacent position and the line at center is 90
Degree；
Step 3.3, rotary bracket the measurement of blade height direction mass center: is adjusted to by the second work by rotation drive device
Rotary bracket under initial testing state is rotated about axis and rotates 90 degree, makes the mounting axis and balance test of blade by position
The line of the front and back knife edge contact point of frame is parallel, by rotation install positioning mechanism, by the graduation mark of mandrel respectively with index dial
90 degree, 180 degree and 270 degree alignment, obtain the measured value of sensor on 4 angle positions, pass through data acquisition, difference meter
It calculates, obtains blade height direction mass center parameter.
(4) round-off work:
Step 4.1, rotary bracket is adjusted to by initial position by rotation drive device, the lifting of testing jig is made to protect dress
Attachment base and lifting protector are set to just, both guarantees can be known as an entirety；
Step 4.2, safety guard is adjusted, sensor foot is made to be detached from sensor upper junction plate；
Step 4.3, tested blade is removed, test is completed.
In conjunction with Fig. 9,10,11, details are as follows for test philosophy of the invention:
(1) measuring mechanism: being rotated by the rotary shaft by tested blade around test macro vertical direction, realizes tested blade
The adjustment of test station is calculated by the measured value of four station state lower sensors of measurement by difference, available tested
Thus the big square of blade and small square is calculated in relative position of the mass center of blade relative to test macro rotary shaft；It simultaneously will be by
It surveys blade to rotate around its horizontal direction axis, by adjusting four angle positions, realizes tested blade height direction mass center parameter
Measurement.
(2) Calculating Torque during Rotary method: test macro is under balanced steady state, available according to principle of moment balance
The torque equilibrium equation on torque measuring device is acted on, the situation of change of load on sensor is acted on by measuring, is obtained
Relative displacement of the mass center of tested blade relative to test macro rotary shaft, thus obtains big square direction and small square direction mass center position
It sets, the relative positional relationship of binding test benchmark to shaft, big square, the small square of available tested blade.
(3) it the calculating of short transverse mass center: when blade is rotated around its mounting axis, can be obtained under any one angle position
To the torque equilibrium equation of test macro, by measuring the measured value of 4 angle position lower sensors, being calculated by difference can be with
Realize the measurement in blade height direction.
Blade to be measured around the rotation of vertical direction axis, it is big to be realized aircraft blade by multiple fixed test by the present invention
The measuring accuracy of existing aircraft blade torque is greatly improved in the precise measurement of square and small square, to the quiet of promotion aircraft blade
Balance adjustment provides reliable technological means；It is controlled by using system and realizes the full-automatic accurate fixed of blade test station
Position, avoids the operating error artificially to line, improves testing efficiency while guaranteeing system testing repeatability, improve test
The automatization level of system；It is real by the measurement of multiple special angle simultaneously by blade to be measured around the rotation of horizontal direction axis
The high-acruracy survey of mass center on existing aircraft blade height direction；Blade to be measured is fixed by the installation of mandrel, round nut and positioning pin
Position mode is capable of the installation positioning of reliable guarantee blade to be measured, prevents from deforming under the effect of gravity by profiling fixture, have simultaneously
It is supported conducive to the installation of product；Trim to system tare weight is realized using system balancing device, guarantees 4 test station shapes of blade
The load acted under state on a sensor is almost the same, is conducive to the range for reducing sensor, improves the measuring accuracy of system.
Survey example
Quality is 10kg, and length is the Z8 series tail-rotor leaf of 2m, is flown using traditional balance torque test method and high-precision
Machine blade torque test macro carries out technology comparison:
Claims (9)
1. a kind of aircraft blade torque automatic measurement system, which is characterized in that including testing jig (1), rotating device (2), torque
Measuring device (3)；Wherein
Testing jig (1) includes test frame (11), testing jig bottom plate (13) and the mandrel (173) for fixing blade to be measured,
Test frame (11) is fixed on testing jig bottom plate (13) upper bottom surface,
Mandrel (173) is set on test frame (11) and rotates along the horizontal rotary shaft with ground and can be fixed on several
Working position；
Rotating device (2) includes rotary bracket (21), swivel bearing (23), rotation drive device (24),
Rotary bracket (21) and testing jig bottom plate (13) floating connection,
The inner ring of swivel bearing (23) is fixedly connected with rotary bracket (21),
Rotary shaft driving rotary bracket (21) rotation of the rotation drive device (24) perpendicular to ground；
Force moment testing device (3) includes balancing side test plate (panel) (311), the sensor being fixedly connected with the outer ring of swivel bearing (23),
Sensor is included in the front sensor (323) and rear sensor (325) of same level and front and back setting,
Balancing side test plate (panel) (311) bottom surface and sensor contacts.
2. system according to claim 1, which is characterized in that testing jig (1) further includes test frame (11), rotating device
Attachment base (14), profiling fixture (15), tooling mounting plate (16), tooling mounting plate (1), stripped nut (171), positioning pin
(172), fixes sleeve (174), locking positioning pin (175), index dial (176)；Wherein
Test frame (11) is fixed on testing jig bottom plate (13) upper bottom surface,
Rotating device attachment base (14) is set to testing jig bottom plate (13) bottom surface,
It is arranged on rotary bracket (21) and connect stabilizer blade (22) with the testing jig that rotating device attachment base (14) matches,
Fixes sleeve (174) is fixed on test frame (11) upper surface,
Tooling mounting plate (16) one end be fixed on it is on mandrel (173) and parallel with testing jig bottom plate (13),
Profiling fixture (15) is set to tooling mounting plate (16) upper surface other end,
Index dial (176) is set on fixes sleeve (174) rear wall,
Mandrel (173) passes through the through-hole of fixes sleeve (174) and index dial (176),
Stripped nut (171) is placed on mandrel (173),
Positioning pin (172) is set in mandrel (173) interior dowel hole,
Locking positioning pin (175), which passes through fixes sleeve (174) and mandrel (173) cooperation, is fixed on mandrel (173) on working position.
3. system according to claim 2, which is characterized in that mandrel (173) is uniformly distributed circumferentially four locking positionings
Pin hole, locking positioning pin (175) are matched with locking positioning pin hole.
4. system according to claim 2, which is characterized in that torque measuring device (3) includes balance test frame (31), power
Torque test device (32), safety guard (33), resilient supporting unit (34), system balancing device (35)；Wherein
Balance test frame (31) includes balancing side test plate (panel) (311), the preceding revolution edge of a knife (312), preceding revolution edge of a knife seat (313), rear time
Rotor mouth (314), rear revolution edge of a knife seat (315)；Wherein
Being set on platform (51) before and after preceding revolution edge of a knife seat (313) and rear revolution edge of a knife seat (315),
Balancing side test plate (panel) (311) lower end surface is fixed in the preceding revolution edge of a knife (312) upper end and lower end and preceding revolution edge of a knife seat (313) are recessed
Slot contact,
Balancing side test plate (panel) (311) lower end surface is fixed in the revolution edge of a knife (314) upper end afterwards and lower end and rear revolution edge of a knife seat (315) are recessed
Slot contact；
Force moment testing device (32) includes sensor foot (321), cushion block (322) on sensor, front sensor (323), rear passes
Sensor (325), sensor backing plate (327),
Sensor foot (321) is fixed on balancing side test plate (panel) (311) bottom surface,
Cushion block (322) is fixed on sensor foot (321) lower end on sensor,
Front sensor (323), rear sensor (324) are set on sensor backing plate (327) by sensor connecting plate,
Sensor backing plate (327) can be moved forward and backward on platform (51)；
Safety guard (33) includes adjustable support seat (331), jacking screw rod (332), handwheel (333), adjustable supporting bracer
(335),
Adjustable support seat (331) is fixed at the nearly force moment testing device (32) in platform (51) upper surface,
Adjustable supporting bracer (335) is fixed and gap is arranged between adjustable support seat (331),
Handwheel (333) is set in gap,
It jacks screw rod (332) and passes through adjustable support seat (331), handwheel (333) and adjustable supporting bracer (335),
Jacking screw rod (332) is connect by oiliness bearing (334) with adjustable supporting bracer (335),
Jacking screw rod (332) is threadedly coupled with handwheel；
Resilient supporting unit (34) includes support base (341), spring damping vibration isolator (342),
Support base (341) be fixed on platform (51) upper surface far from force moment testing device (32) at,
Spring damping vibration isolator (342) lower end is fixed on support base (341) and upper end is located at below balancing side test plate (panel) (311).
5. system according to claim 4, which is characterized in that torque measuring device (3) further includes system balancing device
(35), system balancing device (35) includes stepper motor (351), installation casing (353), screw rod (354), bearing block (355), matches
Pouring weight (356), fixing seat (357)；Wherein
Installation casing (353) is fixed at the nearly resilient supporting unit (34) in balancing side test plate (panel) (311) lower end surface,
Stepper motor (351) is set to installation casing (353) outside,
Screw rod (354) is set in installation casing (353),
Screw rod (354) one end is connect with the rotating output shaft that stepper motor (351) protrudes into installation casing (353) and the other end and solid
(357) are done due to the fixation in installation casing (353) to connect by bearing,
Clump weight (356) is threadedly coupled with screw rod (354).
6. system according to claim 4, which is characterized in that linear guide is arranged in front end to rear end on platform (51), leads
Sliding block is set on rail, and sensor backing plate (327) is set on sliding block.
7. system according to claim 1, which is characterized in that further include lifting protector (4), lifting protector
It (4) include left lifting platform (41), right lifting platform (45), left lifting platform (41) and right lifting platform (45) include guide rod, turbine liter
Drop machine, linear bearing；Wherein
Turbine lift is set in the elevator through-hole of platform (51),
Linear bearing is fixed on platform (51) bottom surface,
Guide rod passes through turbine lift and is threadedly coupled with turbine lift,
Guide rod is also connect with linear bearing；
Guide rod in left lifting platform (41) and right lifting platform (45) topmost always flushes and guide rod is located under testing jig (1)
Side.
8. system according to claim 7, which is characterized in that lifting protector (4) further includes universal driving shaft (42), lifting
Stepper motor (43), worm speed reducer (44)；Wherein
Lifting stepper motor (43) is fixed on platform (51),
The output axis connection of worm speed reducer (44) and lifting stepper motor (43),
Universal driving shaft (42) input terminal is connect with worm speed reducer (44) and two output ends are threadedly coupled with two guide rods respectively.
9. system according to claim 7 or 8, which is characterized in that the setting of testing jig frame (11) lower end surface and guide rod
The lifting protector attachment base (12) matched.
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| CN201910104390.XA CN109823568B (en) | 2019-02-01 | 2019-02-01 | Automatic measuring system for moment of airplane blade |
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|---|---|---|---|
| CN201910104390.XA CN109823568B (en) | 2019-02-01 | 2019-02-01 | Automatic measuring system for moment of airplane blade |
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| CN109823568B CN109823568B (en) | 2022-06-03 |
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| CN110160691A (en) * | 2019-07-01 | 2019-08-23 | 哈尔滨工业大学 | Rotary axis system remnants unbalanced moments measuring device and method |
| CN110822225A (en) * | 2019-10-18 | 2020-02-21 | 中国直升机设计研究所 | Phase Doppler particle analyzer base rotary table |
| CN111060253A (en) * | 2019-12-12 | 2020-04-24 | 南京乾利合科技有限责任公司 | Gravity center and inertia adjusting device for ship and ocean engineering model |
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| CN113148225A (en) * | 2021-04-20 | 2021-07-23 | 中国直升机设计研究所 | Testing device and testing method for fixing and rotating helicopter blades |
| CN114018476A (en) * | 2020-12-25 | 2022-02-08 | 南京乾利合科技有限责任公司 | Air suspension rotary frame of static balancing machine and air suspension static balancing machine |
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