CN108169015A - A kind of tail-rotor flexible beam torque load testing machine - Google Patents
A kind of tail-rotor flexible beam torque load testing machine Download PDFInfo
- Publication number
- CN108169015A CN108169015A CN201711250284.XA CN201711250284A CN108169015A CN 108169015 A CN108169015 A CN 108169015A CN 201711250284 A CN201711250284 A CN 201711250284A CN 108169015 A CN108169015 A CN 108169015A
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- transfer shaft
- flexible beam
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0021—Torsional
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0073—Fatigue
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- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a kind of tail-rotor flexible beam torque load testing machines, belong to tail-rotor flexible beam fatigue test technology field.Support base includes bottom plate and two bearings, bearing are separately installed with deep groove ball bearing；Bearing (ball) cover is arranged on the inside of bearing, and passes through fastener on bearing；The output terminal of arm bar is arranged between two bearings and is connected on torque transfer shaft；The input terminal of arm bar is hinged with loading connector；Torque transfer shaft is installed from side bearing, and to being limited close to the deep groove ball bearing opposite side of testpieces mounting portion；The threaded mounting portion of torque transfer shaft is socketed with straight bushing, and straight bushing side limits the deep groove ball bearing at this end by installation locking nut；Tail-rotor flexible beam torque load testing machine is mounted on by bottom plate on testing stand, and testpieces is mounted on testpieces mounting portion.The present invention can carry out the fatigue test of torsional deflection section, have no the generation of other additional loads, simple and practical in structure.
Description
Technical field
The invention belongs to helicopter tail rotor flexible beam fatigue test technology fields, and in particular to a kind of tail-rotor flexible beam torque
Load testing machine.
Background technology
In helicopter in-flight, tail rotor system provides the balance moment of reaction that rotor torque generates for helicopter.
Composite material tail-rotor flexible beam bears pulling force, and bear to wave and ajust moment of flexure, and also subject to torque, torsion bearing capacity is also
One of important performance of tail-rotor flexible beam.
In traditional tail-rotor flexible beam fatigue test, most importantly consider that it waves, ajusts the fatigue life in direction,
Have ignored the variation of tail-rotor flexible beam torsion stiffness, it is less the considerations of its twisting property.With to composite material tail-rotor flexible beam
The further exploration of performance, for tail-rotor flexible beam in flight course, the variation of torsion stiffness causes enough attention.It is especially near
Come in the production process of tail-rotor flexible beam usually in the case where its inside configuration hickie occurs with bubble, surface so that
The manufacturing scrap rate of flexible beam is higher.To determine whether its performance is qualified, it is necessary to carry out the fatigue test of torsional deflection section, ability
It determines whether the tail-rotor flexible beam of this batch meets installation performance requirement, all has to flight of manufacturing and install critically important
Directive significance.
For this reason, it may be necessary to which specially the torque of design tail-rotor flexible beam loads measuring device, the torsion of flexible beam is measured with this
Stiffness variation or the fatigue life for examining flexible beam torsional deflection section.
Invention content
The purpose of the present invention：To solve the above-mentioned problems, the present invention proposes a kind of tail-rotor flexible beam torque load test
Device can apply flexible beam the torque of arbitrary size and simulate the installation boundary condition of flexible beam, and only carry
For pure torsion, then the generation without other additional loads, the apparatus structure are stablized, dependable performance.
Technical scheme of the present invention：A kind of tail-rotor flexible beam torque load testing machine, including：Support base, torque pass
Pass axis, deep groove ball bearing, bearing (ball) cover, arm bar, loading connector, straight bushing and locking nut；
The support base includes bottom plate and two symmetrical bearings, the bearing are separately installed with the deep-groove ball
Bearing；
The bearing (ball) cover is arranged on the inside of bearing, and passes through fastener on the bearing；
The output terminal of the arm bar is arranged between the bearing of left and right and is connected on the torque transfer shaft；
The input terminal of the arm bar is hinged with the loading connector；
Described torque transfer shaft one end is provided with threaded mounting portion, and the other end is testpieces mounting portion；
The torque transfer shaft is installed from side bearing, and to the deep groove ball bearing opposite side close to testpieces mounting portion into
Row limiting；
The threaded mounting portion of the torque transfer shaft is socketed with straight bushing, and the straight bushing side passes through installation locking nut
The deep groove ball bearing at this end is limited；
The tail-rotor flexible beam torque load testing machine is mounted on by bottom plate on testing stand, and testpieces is mounted on described
On testpieces mounting portion.
Preferably, it is provided in the middle part of the torque transfer shaft and is horizontally mounted slot；
The testpieces installation end is provided with limiting section, the limiting section support is connected on the inner ring of the deep groove ball bearing
On.
Preferably, described loading connector one end is provided with oscillating bearing, and the other end is provided with connection axis pin；
The oscillating bearing is mounted on the arm bar, and the connection axis pin connects with pressurized strut load output terminal screw thread
It connects.
Preferably, described arm bar one end is horizontally mounted connector, and the other end is provided with fork ear joint；
The connector that is horizontally mounted is horizontally mounted slot cooperation installation with described；
The fork ear joint passes through bolted splice with the oscillating bearing.
Preferably, the testpieces mounting portion is a mounting platform；
The testpieces mounting portion is integrally machined molding with the torque transfer shaft；Seat, torque transfer shaft, deep-groove ball axis
It holds, bearing (ball) cover, arm bar, load connector, straight bushing and locking nut；
The support base includes bottom plate and two symmetrical bearings, the bearing are separately installed with the deep-groove ball
Bearing；
The bearing (ball) cover is arranged on the inside of bearing, and passes through fastener on the bearing；
The output terminal of the arm bar is arranged between the bearing of left and right and is connected on the torque transfer shaft；
The input terminal of the arm bar is hinged with the loading connector；
Described torque transfer shaft one end is provided with threaded mounting portion, and the other end is testpieces mounting portion；
The torque transfer shaft is installed from side bearing, and to the deep groove ball bearing opposite side close to testpieces mounting portion into
Row limiting；
The threaded mounting portion of the torque transfer shaft is socketed with straight bushing, and the straight bushing side passes through installation locking nut
The deep groove ball bearing at this end is limited；
The tail-rotor flexible beam torque load testing machine is mounted on by bottom plate on testing stand, and testpieces is mounted on described
On testpieces mounting portion.
Preferably, it is provided in the middle part of the torque transfer shaft and is horizontally mounted slot；
The testpieces installation end is provided with limiting section, the limiting section support is connected on the inner ring of the deep groove ball bearing
On.
Preferably, described loading connector one end is provided with oscillating bearing, and the other end is provided with connection axis pin；
The oscillating bearing is mounted on the arm bar, and the connection axis pin connects with pressurized strut load output terminal screw thread
It connects.
Preferably, described arm bar one end is horizontally mounted connector, and the other end is provided with fork ear joint；
The connector that is horizontally mounted is horizontally mounted slot cooperation installation with described；
The fork ear joint passes through bolted splice with the oscillating bearing.
Preferably, the testpieces mounting portion is a mounting platform；
The testpieces mounting portion is integrally machined molding with the torque transfer shaft；
Or the testpieces mounting portion is detachably installed with the torque transfer shaft.
The technique effect of technical solution of the present invention：A kind of tail-rotor flexible beam torque load testing machine of the present invention, can be fast
The torsion stiffness of fast accurately measure tail-rotor flexible beam, and the fatigue test of torsional deflection section can be carried out, then without other
Additional load generates, simple and practical in structure.It is tested by this experimental rig, experiment overall error is can be controlled within 3%.
Description of the drawings
Fig. 1 is the front view of a preferred embodiment of tail-rotor flexible beam torque load testing machine of the present invention；
Fig. 2 is the vertical view of a preferred embodiment of tail-rotor flexible beam torque load testing machine of the present invention；
Fig. 3 is the A-A sectional views of a preferred embodiment of tail-rotor flexible beam torque load testing machine of the present invention；
Fig. 4 is the torque transfer shaft structure diagram of embodiment illustrated in fig. 1；
Fig. 5 is the arm bar structure diagram of embodiment illustrated in fig. 1；
Fig. 6 is the loading joint structure schematic diagram of embodiment illustrated in fig. 1；
Wherein, 1- support bases, 2- torque transfer shafts, 3- deep groove ball bearings, 4- bearing (ball) covers, 5- arm bars, 6- loadings
Connector, the straight bushings of 7-, 8- locking nuts, 11- bottom plates, 12- bearings, 21- are horizontally mounted slot, 22- limiting sections, the installation of 23- screw threads
Portion, 24- testpieces mounting portions, 51- are horizontally mounted connector, 52- fork ear joints, 61- oscillating bearings, 62- connection axis pins.
Specific embodiment
To make the purpose, technical scheme and advantage that the present invention is implemented clearer, below in conjunction in the embodiment of the present invention
Attached drawing, the technical solution in the embodiment of the present invention is further described in more detail.In the accompanying drawings, identical from beginning to end or class
As label represent same or similar element or the element with same or like function.Described embodiment is the present invention
Part of the embodiment, instead of all the embodiments.The embodiments described below with reference to the accompanying drawings are exemplary, it is intended to use
It is of the invention in explaining, and be not considered as limiting the invention.Based on the embodiments of the present invention, ordinary skill people
Member's all other embodiments obtained without creative efforts, shall fall within the protection scope of the present invention.Under
Face is described in detail the embodiment of the present invention with reference to attached 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 position relationship of the instructions such as "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer " is based on attached drawing institutes
The orientation or position relationship shown is for only for ease of the description present invention and simplifies description rather than instruction or imply signified dress
It puts or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that the present invention is protected
The limitation of range.
As shown in Figure 1 to Figure 3, a kind of tail-rotor flexible beam torque load testing machine, including：Support base 1, torque transmit
Axis 2, deep groove ball bearing 3, bearing (ball) cover 4, arm bar 5, loading connector 6, straight bushing 7 and locking nut 8；
Support base 1 includes bottom plate 11 and two symmetrical bearings 12；
Bottom plate 11 is a rectangular slab, and four corners of rectangular slab are provided with bolt mounting holes, and support base 1 passes through four spiral shells
Bolt is fixed on test platform, ensures the fixing of entire experimental rig, will not be moved.
Deep groove ball bearing 3 is installed at the bearing hole of support base 1, and bearing (ball) cover 4 is arranged on the inside of bearing 12, bearing
End cap 4 is fixed on the outer ring of deep groove ball bearing 3 at the bearing hole of support base 1 by bolt；
The output terminal of arm bar 5 is arranged between left and right bearing 12 and is connected on torque transfer shaft 2, arm bar 5 it is defeated
Enter end and loading connector 6 is hinged；
2 one end of torque transfer shaft is provided with threaded mounting portion 23, and the other end is testpieces mounting portion 24；
Torque transfer shaft 2 is installed from side bearing 12, torque transfer shaft 2 is installed at the endoporus of deep groove ball bearing 3, and
To being limited close to 3 side of deep groove ball bearing of testpieces mounting portion 24；
The threaded mounting portion 23 of torque transfer shaft 2 is socketed with straight bushing 7, and straight 7 side of bushing is right by installation locking nut 8
The deep groove ball bearing 3 at this end is limited；
Tail-rotor flexible beam torque load testing machine is mounted on by bottom plate 11 on testing stand, and testpieces is mounted on testpieces
On mounting portion 24, when experiment loads, pass through the application that actuator carries out loading connector 6 load.
As shown in Figure 4：In the present embodiment, the middle part of torque transfer shaft 2, which is provided with, is horizontally mounted slot 21, is horizontally mounted slot 21
Processing plane up and down is connected thereto in arm bar 5 to be formed, process in plane and be provided with bolt mounting holes by torque transfer shaft 2,
Arm bar 5 is secured by bolts in two processing planes of torque transfer shaft 2, and arm bar 5 is equivalent to play one at this time
The effect of a arm of force.
Torque transfer shaft 2 is provided with limiting section 22 close to testpieces installation end, and limiting section 22 is 2 one shoulder axis of torque transfer shaft
Form, limiting section 22 is connected on the inner ring of the deep groove ball bearing 3 of testpieces installation end, can to deep groove ball bearing 3 into
Row limiting.
As shown in Figures 5 and 6：In the present embodiment, 6 one end of loading connector is provided with oscillating bearing 61, and the other end is provided with
Axis pin 62 is connected, 5 one end of arm bar is horizontally mounted connector 51, and the other end is provided with fork ear joint 52；
It is horizontally mounted connector 51 and is horizontally mounted the cooperation of slot 21 and install, fork ear joint 52 is cut with scissors with oscillating bearing 61 by bolt
It connects；5 one end of arm bar is by being horizontally mounted connector 51 on torque transfer shaft 2, and the other end is by fork ear joint 52 with adding
Connector connection is carried, loading connector is connect by connecting axis pin 62 with pressurized strut.
In the present embodiment, testpieces mounting portion 24 is a mounting platform, and mounting platform is used to fix testpieces；
It is appreciated that：Testpieces mounting portion 24 is integrally machined molding with torque transfer shaft 2, can enhance torque transfer shaft
2 structural strength enhances torque transmission effect.
It is appreciated that：Testpieces mounting portion 24 is detachably installed with torque transfer shaft 2, big according to the size of testpieces
It is small, replace different mounting platforms.
During experiment loading, the application of load is carried out to loading connector 6 by actuator.By loading the load on connector 6
With the collective effect (i.e. strong to have the arm of force again) of arm bar 5, the torsional deflection of axis is formd on torque transfer shaft 2, is produced
Torque.
Since torque transfer shaft 2 and tail-rotor flexible beam link together, so torque is at each section on the two axis
All produce torque.For torque transfer shaft 2 other than can be along being rotated at axis, the degree of freedom in other directions be restrained,
When applying load in this way, the only torsional moment on tail-rotor flexible beam is passed to by torque transfer shaft 2, without other additional loads
Lotus.Tail-rotor flexible beam can obtain the fatigue life of true torsion stiffness and torsional deflection on the experimental rig, to determine tail
The torsion service life of paddle flexible beam provides foundation.
During experiment, apply load by loading connector, a torsional moment will be formed on torque transfer shaft, it should
Torque will be transmitted on entire torsion axis, until the fixing end of flexible beam.Flexible beam along section a certain on axis torsion
Square value size can be adjusted by what size of the load of application.
It is last it is to be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations.To the greatest extent
Pipe is with reference to the foregoing embodiments described in detail the present invention, it will be understood by those of ordinary skill in the art that：It is still
It can modify to the technical solution recorded in foregoing embodiments or which part technical characteristic is equally replaced
It changes；And these modifications or replacement, the essence for various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution
God and range.
Claims (5)
1. a kind of tail-rotor flexible beam torque load testing machine, which is characterized in that including：Support base (1), torque transfer shaft
(2), deep groove ball bearing (3), bearing (ball) cover (4), arm bar (5), loading connector (6), straight bushing (7) and locking nut (8)；
The support base (1) includes bottom plate (11) and two symmetrical bearings (12), and the bearing (12) is installed respectively
There is the deep groove ball bearing (3)；
The bearing (ball) cover (4) is arranged on the inside of bearing (12), and passes through fastener on the bearing (12)；
The output terminal of the arm bar (5) is arranged between the bearing of left and right and is connected on the torque transfer shaft (2)；
The input terminal of the arm bar (5) and the loading connector (6) are hinged；
Described torque transfer shaft (2) one end is provided with threaded mounting portion (23), and the other end is testpieces mounting portion (24)；
The torque transfer shaft (2) is installed from side bearing (12), and to the deep groove ball bearing close to testpieces mounting portion (24)
(3) opposite side is limited；
The threaded mounting portion (23) of the torque transfer shaft (2) is socketed with straight bushing (7), and straight bushing (7) side passes through peace
Dress locking nut (8) limits the deep groove ball bearing (3) at this end；
By bottom plate (11) on testing stand, testpieces is mounted on described the tail-rotor flexible beam torque load testing machine
On testpieces mounting portion (24).
2. tail-rotor flexible beam torque load testing machine according to claim 1, it is characterised in that：The torque transfer shaft
(2) it is provided in the middle part of and is horizontally mounted slot (21)；
The testpieces installation end is provided with limiting section (22), the limiting section (22) is connected to the deep groove ball bearing
(3) on inner ring.
3. tail-rotor flexible beam torque load testing machine according to claim 1, it is characterised in that：The loading connector
(6) one end is provided with oscillating bearing (61), and the other end is provided with connection axis pin (62)；
The oscillating bearing (61) is on the arm bar (5), the connection axis pin (62) and pressurized strut load output terminal
It is threadedly coupled.
4. tail-rotor flexible beam torque load testing machine according to claim 3, it is characterised in that：The arm bar (5)
One end is horizontally mounted connector (51), and the other end is provided with fork ear joint (52)；
The connector (51) that is horizontally mounted is horizontally mounted slot (21) cooperation installation with described；
The fork ear joint (52) passes through bolted splice with the oscillating bearing (61).
5. tail-rotor flexible beam torque load testing machine according to claim 1, it is characterised in that：The testpieces installation
Portion (24) is a mounting platform；
The testpieces mounting portion (24) is integrally machined molding with the torque transfer shaft (2)；
Or the testpieces mounting portion (24) is detachably installed with the torque transfer shaft (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711250284.XA CN108169015B (en) | 2017-12-01 | 2017-12-01 | Tail rotor flexible beam torque loading test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711250284.XA CN108169015B (en) | 2017-12-01 | 2017-12-01 | Tail rotor flexible beam torque loading test device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108169015A true CN108169015A (en) | 2018-06-15 |
| CN108169015B CN108169015B (en) | 2020-06-09 |
Family
ID=62525016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711250284.XA Active CN108169015B (en) | 2017-12-01 | 2017-12-01 | Tail rotor flexible beam torque loading test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108169015B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108627337A (en) * | 2018-07-19 | 2018-10-09 | 中国人民解放军陆军装甲兵学院 | Gear torsional fatigue experimental device |
| CN110789727A (en) * | 2019-10-11 | 2020-02-14 | 中国直升机设计研究所 | Helicopter tail rotor flexible beam torsional deformation section fatigue test design method |
| CN111366286A (en) * | 2020-03-16 | 2020-07-03 | 福建工程学院 | Brake pad static locking torque measuring device and using method thereof |
| CN112179787A (en) * | 2020-09-25 | 2021-01-05 | 中国直升机设计研究所 | Torsion test device for main paddle central part and support arm limited lock |
| CN112229614A (en) * | 2020-10-16 | 2021-01-15 | 中国航发沈阳发动机研究所 | Shaft part torsion fatigue test device |
| CN112591137A (en) * | 2020-11-13 | 2021-04-02 | 中国航空工业集团公司沈阳飞机设计研究所 | Horizontal tail large shaft test device for airplane |
| CN118225563A (en) * | 2024-05-24 | 2024-06-21 | 西北工业大学 | Flexible Liang Jingli of fiber reinforced composite material and fatigue test fixture |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108627337A (en) * | 2018-07-19 | 2018-10-09 | 中国人民解放军陆军装甲兵学院 | Gear torsional fatigue experimental device |
| CN110789727A (en) * | 2019-10-11 | 2020-02-14 | 中国直升机设计研究所 | Helicopter tail rotor flexible beam torsional deformation section fatigue test design method |
| CN111366286A (en) * | 2020-03-16 | 2020-07-03 | 福建工程学院 | Brake pad static locking torque measuring device and using method thereof |
| CN112179787A (en) * | 2020-09-25 | 2021-01-05 | 中国直升机设计研究所 | Torsion test device for main paddle central part and support arm limited lock |
| CN112229614A (en) * | 2020-10-16 | 2021-01-15 | 中国航发沈阳发动机研究所 | Shaft part torsion fatigue test device |
| CN112591137A (en) * | 2020-11-13 | 2021-04-02 | 中国航空工业集团公司沈阳飞机设计研究所 | Horizontal tail large shaft test device for airplane |
| CN112591137B (en) * | 2020-11-13 | 2023-11-28 | 中国航空工业集团公司沈阳飞机设计研究所 | Airplane horizontal tail large shaft test device |
| CN118225563A (en) * | 2024-05-24 | 2024-06-21 | 西北工业大学 | Flexible Liang Jingli of fiber reinforced composite material and fatigue test fixture |
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| CN108169015B (en) | 2020-06-09 |
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