CN109520685A - A kind of bearing support assembly, rigidity calibration system and method - Google Patents
A kind of bearing support assembly, rigidity calibration system and method Download PDFInfo
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- CN109520685A CN109520685A CN201811253207.4A CN201811253207A CN109520685A CN 109520685 A CN109520685 A CN 109520685A CN 201811253207 A CN201811253207 A CN 201811253207A CN 109520685 A CN109520685 A CN 109520685A
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- bearing support
- support assembly
- inner ring
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0041—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress
- G01M5/005—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress by means of external apparatus, e.g. test benches or portable test systems
- G01M5/0058—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress by means of external apparatus, e.g. test benches or portable test systems of elongated objects, e.g. pipes, masts, towers or railways
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
This application provides a kind of bearing support assemblies, rigidity calibration system and method, it is related to aircraft structure strength verification experimental verification technical field, the bearing support assembly includes outer bearing support, first inner ring surface of the annular fixing bearing of adaptation installation one is provided, inner bearing support provides the second inner ring surface of another annular fixing bearing of adaptation installation, inside and outside bearing spider is fixedly connected, pass through above-mentioned bearing support assembly being axially and radially defined to Axle Parts, rigidity calibration system provided by the present application and method are demarcated by the rigidity that load applying mechanism and displacement meter carry out above-mentioned outer bearing support and inner bearing support, test method is simple and reliable, have many advantages, such as that test accuracy is high.
Description
Technical field
The invention belongs to aircraft structure strength verification experimental verification technical fields, and in particular to a kind of bearing support assembly, rigidity
Calibration system and method.
Background technique
Axle Parts (such as turbine wheel shaft) are the key that transmission parts in military, civilian mechanical structure, have core status.And mesh
The preceding country is less for the research of the base part fatigue behaviour, can seldom see in document report at home about axis class portion
Work of the part under complicated fatigue loading conditions in terms of performance verification.Due to the assessment side of the fatigue behaviour index to Axle Parts
Method is less, cause in the design Axle Parts it is often relatively conservative, weight is larger, although ensure that mechanical knot to a certain extent
The reliability and safety of structure, but this but reduces overall performance index on the one hand, and it is also improved on the other hand
Cost within the period of being on active service, causes great energy resources to waste.So carrying out Axle Parts performance indicator verification experimental verification side
The research of method researches and develops the bearing support assembly and test loading method of component, not only has and fill up the domestic blank in the field
The actuality meaning of state, and for establishing, perfect, reliably there is Axle Parts performance verification system important guidance to anticipate
Justice.
Summary of the invention
At least one in order to solve the above-mentioned technical problem, this application provides a kind of bearing support assemblies, rigidity calibration system
System and method, can be with so that loading equipemtn carries out load load to Axle Parts by the fixed Axle Parts of bearing support assembly
Boundary condition present in the fixation, load and verification experimental verification of military, civilian aircraft shaft parts is solved to be difficult to simulate, be not easy to apply
Add the problems such as coupled load, provides technical capability for aircraft Axle Parts and reliability of structure verifying.And the rigidity proposed
Rating test system and method, for verifying the rigidity state of designed bearing support assembly.
First aspect present invention provides a kind of bearing support assembly, and for fixing Axle Parts, the Axle Parts are along axis
To can at least install two annular fixing bearings, bearing support assembly includes:
Outer bearing support, one end are provided with the first inner ring surface that can be adapted to the annular fixing bearing of installation one, separately
One end is fixedly connected with test-bed, circumferentially arranged between the both ends of outer bearing support to have step surface；
Inner bearing support is arranged in the outer bearing support, and one end, which is provided with to be adapted to, installs another described ring
Second inner ring surface of shape fixing bearing, the other end are fixedly connected with the step surface.
According at least one embodiment of the application, the outer bearing support is circumferentially arranged lightening hole.
According at least one embodiment of the application, the inner bearing support is circumferentially arranged lightening hole.
According at least one embodiment of the application, the lightening hole is slotted eye.
According at least one embodiment of the application, the outer bearing support has the biggish first part of internal diameter and interior
The lesser second part of diameter, transitional region of the step surface between the first part and the second part.
According at least one embodiment of the application, the inner bearing support is connect with the outer bearing carrier setting bolt.
According at least one embodiment of the application, the outer bearing support is bolted with the test-bed.
The second aspect of the present invention provides a kind of rigidity calibration system, for demarcating bearing support assembly as described above
Rigidity, the rigidity calibration system includes:
Clip is socketed on the outer ring with first inner ring surface one end of the outer bearing support of the bearing support assembly,
Or it is socketed on the outer ring with second inner ring surface one end of inner bearing support of the bearing support assembly；
Chain, one end are fixedly connected with the clip, and the other end is connected with force application mechanism, and the force application mechanism with it is described
Load transducer is provided between chain；
Displacement meter is fixed inside bearing support assembly, and is located on the loaded line limited by the chain, described
The gauge head of displacement meter is fixed on first inner ring surface or the second inner ring surface.
It further include magnetic stand according at least one embodiment of the application, the magnetic stand is removable by magnetic force
It unloads and is connected on first inner ring surface or the second inner ring surface, engagement site is provided on the magnetic stand, for being clamped
State the gauge head of displacement meter.
The another aspect of the application provides a kind of rigidity scaling method, using rigidity calibration system as described above, to such as
The upper bearing support assembly is demarcated, and the rigidity scaling method includes:
Clip is socketed on any outer ring of the bearing support assembly, the chain is straightened；
The fixed displacement meter in inside in corresponding outer ring, so that the displacement meter is located at the loaded line of chain restriction
On, the gauge head of the displacement meter is fixed on the inner ring surface of corresponding outer ring, reads the first registration of displacement meter；
Load is applied by setting load step-length to the chain by force application mechanism, records displacement meter corresponding multiple second
Registration, and compared with first registration, obtain multiple shift values；
The load value is placed in two-dimensional coordinate system with corresponding shift value, it is quasi- to carry out data by least square method
It closes, to be fitted resulting straight slope as the rigidity of outer bearing support or inner bearing support.
Bearing support assembly provided by the invention is easy for assemble or unload, simulates, limits Axle Parts axially and radially
Displacement, it is consistent with its boundary condition under real work state, it is to apply complicated coupling in fatigue behaviour verification test to carry
Lotus provides necessary condition, and rigidity calibration system and rigidity scaling method provided by the present invention have for the bearing support assembly
Have the advantages that design is easy, test accuracy is high, be easier to apply.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of an embodiment of the application bearing support assembly.
Fig. 2 is the bearing support assembly and turbine wheel shaft connection schematic diagram of the application embodiment illustrated in fig. 1.
Fig. 3 is the application rigidity calibration system structural schematic diagram.
Wherein, 1- bearing column, 2- bottle gouard moved by hands, 3- load transducer, 4- chain, 5- clip, 6- outer bearing support, 7- axis
Hold support device, 8- inner bearing support, 9- test-bed, 10- displacement meter, 11- turbine wheel shaft, the first inner ring surface of 61-, 62- step
Face, 63- first part, 64- second part, the second inner ring surface of 81-.
Specific embodiment
To keep the purposes, technical schemes and advantages of the application implementation clearer, below in conjunction with the application embodiment
In attached drawing, the technical solution in the application embodiment is further described in more detail.In the accompanying drawings, identical from beginning to end
Or similar label indicates same or similar element or element with the same or similar functions.Described embodiment is
A part of embodiment of the application, rather than whole embodiments.Embodiment below with reference to attached drawing description is to show
Example property, it is intended to for explaining the application, and should not be understood as the limitation to the application.Based on the embodiment in the application,
Every other embodiment obtained by those of ordinary skill in the art without making creative efforts belongs to this
Apply for the range of protection.Presently filed embodiment is described in detail with reference to the accompanying drawing.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on attached drawing institute
The orientation or positional relationship shown, is merely for convenience of description of the present invention and simplification of the description, rather than the dress of indication or suggestion meaning
It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as protecting the present invention
The limitation of range.
The application first aspect provides a kind of bearing support assembly 7, referring to Figure 1 and Figure 2 comprising outer bearing support 6
With inner bearing support 8, wherein one end of outer bearing support 6, which is provided with, can be adapted to the annular fixing bearing of installation one
First inner ring surface 61, the other end are fixedly connected with test-bed 9, circumferentially arranged between the both ends of outer bearing support 6 to have step surface
62；
Inner bearing support 8 is arranged in the outer bearing support 6, and one end, which is provided with to be adapted to, installs another described ring
Second inner ring surface 81 of shape fixing bearing, the other end are fixedly connected with the step surface 62.
The application Axle Parts include but is not limited to turbine wheel shaft, compressorshaft, propeller shaft etc., are particularly suitable for turbine
Axis, circumferentially generally there are two fixed rings for tool for turbine wheel shaft, are cased with bearing outside, to limit the axially or radially movement of turbine wheel shaft, this
The bearing support assembly that application provides, which is that, supports the two bearings, for simulating the real displacement perimeter strip of Axle Parts
Part solves consolidating for military, civilian aircraft shaft parts convenient for applying moment of flexure, torque and Tensile or Compressive Loading when Axle Parts work
The problems such as boundary condition present in fixed, load and verification experimental verification is difficult to simulate, coupled load is not easy to apply.
Fig. 2 is the reversed cross-sectional view of Fig. 1, wherein outer bearing support 6 has an inner ring surface, on fixed turbine 11
First bearing, inner bearing support 8 have another inner ring surface, 11 second bearing on fixed turbine axis, one
In a concrete application case, the inner ring radius surface of outer bearing support 6 and inner bearing support 8 is respectively as follows: 225mm and 175mm, i.e., suitable
Assigned in the radius after required bearing and Axle Parts combination.
In the present embodiment, inner bearing support 8 and outer bearing support 6 are cylindrical, wherein outer bearing support 6 it is axial compared with
Long, inner bearing support 8 is axially shorter, and is socketed in the inside of outer bearing support 6, and outer bearing support 6 is close to intermediate position
With step surface 62, for being fixedly connected with inner bearing support 8, it is to be understood that step surface 62 can be outside bearing spider 6
Cylindrical inside protrusion formed, be also possible to as shown in Figure 2 be formed by two mutual transition of different inner diameters section.
In the embodiment as shown in Figure 2 formed by two mutual transition of different inner diameters section, the outer bearing support 6 has
There are the biggish first part 63 of internal diameter and the lesser second part 64 of internal diameter, the step surface 62 is the first part 63 and institute
State the transitional region between second part 64.
In some alternative embodiments, the outer bearing support 6 is circumferentially arranged lightening hole.
In some alternative embodiments, the inner bearing support 8 is circumferentially arranged lightening hole.
In some alternative embodiments, above-mentioned lightening hole is slotted eye, it is to be understood that as shown in Figure 2
The embodiment formed by two mutual transition of different inner diameters section in, the first part of outer bearing support 6 and second part have
Oval lightening hole.Construction weight is not only alleviated by the lightening hole of optimization design, but also convenient for supervising when Axle Parts installation
The arrangement on survey line road.
In some alternative embodiments, the inner bearing support 8 is bolted with the outer bearing support 6, the reality
It applies in example, it is circumferentially arranged on the step surface of outer bearing support 6 to have multiple (such as 16) through-holes, corresponding inner bearing support 8
End also there is step surface, be fixed after two step surfaces overlappings by bolt.
In some alternative embodiments, as shown in figure 3, outer bearing support 6 is bolted with the test-bed 9,
Type of attachment is simple, easy for removal and installation, reduces time and cost of labor.
The application second aspect provides a kind of rigidity calibration system, for demarcating the rigid of above-mentioned bearing support assembly 7
Degree, with continued reference to Fig. 3, the rigidity calibration system includes:
Clip 5 is socketed in the outer with 61 one end of the first inner ring surface of the outer bearing support 6 of the bearing support assembly 7
On circle, or it is socketed on the outer ring with 81 one end of the second inner ring surface of inner bearing support 8 of the bearing support assembly 7；
Chain 4, one end are fixedly connected with the clip 5, and the other end is connected with force application mechanism, and in the force application mechanism and institute
It states and is provided with load transducer 3 between chain 4；
Displacement meter 10 is fixed inside bearing support assembly 7, and is located on the loaded line limited by the chain 4,
The gauge head of the displacement meter 10 is fixed on first inner ring surface 61 or the second inner ring surface 81.
In the present embodiment, test load rack 9 be fixed on terrace by four groups of foundation bolts, test load rack 9 and
It is fixed between bearing support assembly 7 by 16 bolts, guarantees the consistency of bearing spider and actual displacement boundary condition,
Basic condition is provided for the application of complex load, bearing support assembly 7 is cylindrical, repeats no more as previously described, and bearing column 1 is logical
Foundation bolt is crossed to be fixed on test load rack 9 at the position of 0.5m, for fixing force application mechanism, force machine here
Structure can be bottle gouard moved by hands 2, be also possible to the controlled class load loader such as actuator.
In the present embodiment, the first inner ring surface 61 and the second inner ring surface 81 are necessarily set as suitable to connect bearing
Structure with connection bearing, such as with edge, the application is when carrying out the calibration of 7 rigidity of bearing support assembly, it is necessary to will be displaced
The gauge head of meter is fixed on the first inner ring surface 61 and the second inner ring surface 81 of bearing support assembly 7, such as can be in bearing branch
Other clamping pieces are tied at first inner ring surface 61 of support arrangement 7 and the position of the second inner ring surface 81, survey is clamped by clamping piece
Head is also possible to fix by bonding mode, in some alternative embodiments, destroys bearing branch for ease of assembly and disassembly and not
The structure of support arrangement 7, is linked using magnetic force, such as one magnetic magnetic stand of tool of processing, has card on the magnetic stand
Close position, for being clamped the gauge head of the displacement meter 10, meanwhile, the magnetic stand by magnetic absorption in the first inner ring surface 61 and
On second inner ring surface 81.
In above embodiment, displacement meter 10 is digital display displacement meter, such as amesdial, the sensitivity with 0.001mm,
Deformation recognition ability with higher.
In above embodiment, load transducer 3 can be connected by connection with MOOG data collection system, to protect
Demonstrate,prove stability, the accuracy of load data collected.
In some optional embodiments, displacement meter 10 is fixed by fixed pillar, as shown in Figure 1 and foregoing description
It is found that the dial plate and gauge head etc. of displacement meter 10 are all located in the first inner ring surface 61 and the second inner ring surface 81, and dial plate is by perpendicular
The fixation pillar being directly arranged is fixed on test load rack 9 or on terrace, not in the first inner ring surface 61 and second
Movement in anchor ring 81, to be applied on bearing support assembly 7 in force application mechanism, displacement meter 10 can generate reading, fixed branch
Pillar height degree be it is adjustable, it is so as to after the completion of demarcating the rigidity of outer bearing support 6, displacement meter is mobile by the first inner ring surface 61
To at the second inner ring surface 81, the rigidity calibration of inner bearing support 8 is continued to complete.Fixed strut height is that adjustable mode for example may be used
To be slide bar or threaded rod etc..
Based on above system, a kind of rigidity scaling method is provided in terms of the application third, comprising:
Clip 5 is socketed on any outer ring of the bearing support assembly 7, the chain 4 is straightened；
The fixed displacement meter 10 in inside in corresponding outer ring, so that the displacement meter 10 is located at adding for chain restriction
It carries on line, the gauge head of the displacement meter 10 is fixed on the inner ring surface of corresponding outer ring, read 10 first registration of displacement meter；
Load, record displacement meter 10 corresponding multiple the are applied by setting load step-length to the chain by force application mechanism
Two registrations, and compared with first registration, obtain multiple shift values；
The load value is placed in two-dimensional coordinate system with corresponding shift value, it is quasi- to carry out data by least square method
It closes, to be fitted resulting straight slope as the rigidity of outer bearing support 6 or inner bearing support 8.
Specifically, when externally bearing spider 6 carries out rigidity calibration, it will be in the center of clip 5 and outer bearing support 6
Heart position coincides, and with reference to Fig. 1, the outside of clip 5 is connected by bolt with chain 4, then by load transducer 3 and chain 4
The other end be connected, the other side of load transducer 3 is connected with the chain on bottle gouard moved by hands 2, and bottle gouard moved by hands 2 is fixed on bearing column
On 1.When applying the load of rigidity calibration, it is ensured that bearing spider center, clip center, chain, load transducer and manual calabash
The load center of reed is point-blank.Same method, internal bearing spider 8 carry out rigidity calibration.
In above embodiment, before the test of rigidity target, set the target load of test load to by load step-length
1kN, 2kN, 3kN, 4kN, 5kN, and respectively when sensor load reaches respective value, outer (interior) is measured using digital display displacement meter
The deflection of bearing spider.
In above embodiment, rigidity rating test carries out repeatedly altogether, such as 3 times -5 times, and be directed to each step-length when
Then 3-5 reading averaged of digital display displacement meter, the accuracy and repeatability of guarantee test process are carried by fitting
Rigidity value inside and outside bearing spider of the lotus-deformation data to determine bearing support assembly.
The beneficial effects of the present invention are:
(1) bearing support assembly is cylindrical separate structure, and installation and removal are convenient, can greatly reduce test installation,
Workload needed for disassembly and inspection reduces human cost；
(2) bearing support assembly simulates, limits the axially and radially displacement of Axle Parts, with it in real work state
Under boundary condition it is consistent, in fatigue behaviour verification test apply complicated coupling load provide necessary condition；
(3) have between the rigidity Design and axis class testpieces of two bearing spiders of bearing support assembly good compatible
Property, it ensure that feasibility, confidence level and the accuracy of support system during verification experimental verification；
(4) the rigidity rating test of bearing support support loads bearing spider with bottle gouard moved by hands, is acquired with MOOG
System carries out data acquisition, and not only test accuracy is high, but also test procedure is easy, strong operability, economical and practical；
(5) test-bed and bearing support assembly can solve Axle Parts boundary condition imitation difficulty is big, complicated coupling
It closes load (moment of flexure, torque and Tensile or Compressive Loading) and the problems such as is not easy to apply, design form is novel, and application is strong, and it is domestic right to enhance
The performance verification technical capability of Axle Parts；
(6) test-bed and bearing support assembly have filled up the domestic blank in Axle Parts comprehensive verification test capability,
Technical support is provided for the verifying of domestic experiment on fatigue properties.
The above, the only specific embodiment of the application, but the protection scope of the application is not limited thereto, it is any
Within the technical scope of the present application, any changes or substitutions that can be easily thought of by those familiar with the art, all answers
Cover within the scope of protection of this application.Therefore, the protection scope of the application should be with the scope of protection of the claims
It is quasi-.
Claims (10)
1. a kind of bearing support assembly, for fixing Axle Parts, the Axle Parts can at least install two rings along axial direction
Shape fixing bearing, which is characterized in that the bearing support assembly includes:
Outer bearing support (6), one end are provided with the first inner ring surface (61) that can be adapted to the annular fixing bearing of installation one,
The other end is fixedly connected test-bed (9), circumferentially arranged between the both ends of outer bearing support (6) to have step surface (62)；
Inner bearing support (8), in the outer bearing support (6), one end is provided with to be adapted to and install described in another for setting
The second inner ring surface (81) of annular fixing bearing, the other end are fixedly connected with the step surface (62).
2. bearing support assembly as described in claim 1, which is characterized in that the outer bearing support (6) is circumferentially arranged to be had
Lightening hole.
3. bearing support assembly as described in claim 1, which is characterized in that the inner bearing support (8) is circumferentially arranged to be had
Lightening hole.
4. bearing support assembly as claimed in claim 2 or claim 3, which is characterized in that the lightening hole is slotted eye.
5. bearing support assembly as described in claim 1, the outer bearing support (6) has the biggish first part of internal diameter
(63) and the lesser second part of internal diameter (64), the step surface (62) are the first part (63) and the second part
(64) transitional region between.
6. bearing support assembly as described in claim 1, which is characterized in that the inner bearing support (8) and the outer bearing
Support (6) is bolted.
7. bearing support assembly as described in claim 1, which is characterized in that the outer bearing support (6) and the testing stand
Frame (9) is bolted.
8. a kind of rigidity calibration system, for demarcating the rigid of such as described in any item bearing support assemblies of claim 1-7 (7)
Degree, which is characterized in that the rigidity calibration system includes:
Clip (5), be socketed in the outer bearing support (6) of the bearing support assembly (7) has the first inner ring surface (61) one end
Outer ring on, or be socketed in the bearing support assembly (7) inner bearing support (8) have the second inner ring surface (81) one end
Outer ring on；
Chain (4), one end are fixedly connected the clip (5), and the other end is connected with force application mechanism, and in the force application mechanism and institute
It states and is provided with load transducer (3) between chain (4)；
Displacement meter (10) is fixed at bearing support assembly (7) inside, and is located at the loaded line limited by the chain (4)
On, the gauge head of the displacement meter (10) is fixed on first inner ring surface (61) or the second inner ring surface (81).
9. rigidity calibration system as claimed in claim 8, which is characterized in that further include magnetic stand, the magnetic stand according to
It is detachably connected on first inner ring surface (61) or the second inner ring surface (81) by magnetic force, is provided with card on the magnetic stand
Position is closed, for being clamped the gauge head of the displacement meter (10).
10. a kind of rigidity scaling method, which is characterized in that rigidity calibration system as claimed in claim 8 or 9 is used, to such as
Any one of the claim 1-7 bearing support assembly (7) is demarcated, and the rigidity scaling method includes:
Clip (5) is socketed on any outer ring of the bearing support assembly (7), the chain (4) are straightened；
The fixed displacement meter (10) in inside in corresponding outer ring, so that the displacement meter (10) is located at adding for chain restriction
It carries on line, the gauge head of the displacement meter (10) is fixed on the inner ring surface of corresponding outer ring, read (10) first registration of displacement meter；
Load is applied by setting load step-length to the chain by force application mechanism, records displacement meter (10) corresponding multiple second
Registration, and compared with first registration, obtain multiple shift values；
The load value is placed in two-dimensional coordinate system with corresponding shift value, data fitting is carried out by least square method, with
It is fitted rigidity of the resulting straight slope as outer bearing support (6) or inner bearing support (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811253207.4A CN109520685A (en) | 2018-10-25 | 2018-10-25 | A kind of bearing support assembly, rigidity calibration system and method |
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| CN201811253207.4A CN109520685A (en) | 2018-10-25 | 2018-10-25 | A kind of bearing support assembly, rigidity calibration system and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110553829A (en) * | 2019-09-23 | 2019-12-10 | 中国船舶重工集团公司第七0七研究所 | integral flexible joint rigidity measuring device and method |
| CN115070823A (en) * | 2022-06-21 | 2022-09-20 | 法奥意威(苏州)机器人系统有限公司 | Joint stiffness detection method, robot motion control method and related device |
| CN115070823B (en) * | 2022-06-21 | 2023-09-29 | 法奥意威(苏州)机器人系统有限公司 | Joint stiffness detection method, robot motion control method and related devices |
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