CN109533387A - A kind of Helicopter Main Hub support arm restraint lock fatigue experimental device - Google Patents
A kind of Helicopter Main Hub support arm restraint lock fatigue experimental device Download PDFInfo
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- CN109533387A CN109533387A CN201811346511.3A CN201811346511A CN109533387A CN 109533387 A CN109533387 A CN 109533387A CN 201811346511 A CN201811346511 A CN 201811346511A CN 109533387 A CN109533387 A CN 109533387A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
- B64F5/00—Designing, manufacturing, assembling, cleaning, maintaining or repairing aircraft, not otherwise provided for; Handling, transporting, testing or inspecting aircraft components, not otherwise provided for
- B64F5/60—Testing or inspecting aircraft components or systems
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- Aviation & Aerospace Engineering (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The application belongs to Helicopter Main Hub support arm restraint and locks tired experimental technique field, and in particular to a kind of Helicopter Main Hub support arm restraint lock fatigue experimental device, comprising: the fixed device of testpieces locks testpieces to fixed restraint；Displacement loading device, for being connect with restraint lock testpieces, to apply displacement load to restraint lock testpieces；Shimmy loading device, for being connect with restraint lock testpieces, to apply shimmy load to restraint lock testpieces；Flight loading device, for being connect with restraint lock testpieces, to apply flight load to restraint lock testpieces.Those skilled in the art can lock testpieces to main hub support arm restraint using the device and apply displacement load, shimmy load and flight load, obtain its fatigue properties and its weak part to assess its service life and its structure optimization improvement and providing authentic data.
Description
Technical field
The application belongs to Helicopter Main Hub support arm restraint and locks tired experimental technique field, and in particular to a kind of Helicopter Main paddle
Hub support arm restraint locks fatigue experimental device.
Background technique
Helicopter Main Hub support arm restraint lock is the component that Helicopter Main rotor folds locking, can save helicopter in warship
Stop space on ship need to carry out reality to it to assess its service life and being that improving and optimizating for its structure provides authentic data
Research is tested, ground experiment load is carried out to it, obtains its fatigue properties and its weak part.
Helicopter Main Hub support arm restraint lock experimental piece structure as shown in Figure 1, comprising: fixed position 1, bar fork ear 2,
Short fork ear 3 and two dampers connect boss 4, and when work is primarily subjected to displacement load, shimmy load and flight load.When
Before, lack can accurate simulation Helicopter Main Hub support arm restraint lock installation and apply carry boundary condition experimental provision, this field
Technical staff effectively can not carry out fatigue test to it.
Thus, it is desirable to have a kind of technical solution overcomes or at least mitigates at least one drawbacks described above of the prior art.
Summary of the invention
The purpose of the application is to provide a kind of Helicopter Main Hub support arm restraint lock fatigue experimental device, to overcome or alleviated by
The problem of above-mentioned at least one aspect.
The technical solution of the application is:
A kind of Helicopter Main Hub support arm restraint lock fatigue experimental device, comprising:
Testpieces fixes device, locks testpieces to fixed restraint；
Displacement loading device, for being connect with restraint lock testpieces, to apply displacement load to restraint lock testpieces；
Shimmy loading device, for being connect with restraint lock testpieces, to apply shimmy load to restraint lock testpieces；
Flight loading device, for being connect with restraint lock testpieces, to apply flight load to restraint lock testpieces.
According at least one embodiment of the application, the fixed device of testpieces includes:
Bottom plate；
Two columns are fixedly installed on the wall surface of bottom plate side；
When the fixed restraint of the fixed device of testpieces locks testpieces, restraint locks the fixed position of testpieces and the wall of two columns
Face is fixedly connected, and the axis and bottom plate of the axis of restraint lock testpieces bar fork ear through-hole and the short fork ear through-hole of restraint lock testpieces
Vertically.
According at least one embodiment of the application, the axis of restraint lock testpieces bar fork ear through-hole is known as bar fork trunnion
Line；
The axis of the short fork ear through-hole of restraint lock testpieces is known as short fork trunnion line；
Displacement loading device includes:
Bar fork ear displacement loading device, one end are grown for connecting with bar fork ear with applying along bar fork trunnion line to bar fork ear
Pitch ear displacement power；
Short fork ear displacement loading device, one end are short to apply along short fork trunnion line to short fork ear for connecting with short fork ear
Pitch ear displacement power.
According at least one embodiment of the application, bar fork ear displacement loading device includes:
Bar fork ear adapter, one end is ears structure, for connecting with bar fork ear；
Bar fork ear pressurized strut, piston rod are connect with the other end of long fork ear joint；Wherein,
When bar fork ear adapter is connect with bar fork ear, bar fork ear is located between the ears structure of bar fork ear adapter, and long
The axis of fork ear adapter is overlapped with the axis of through-hole on bar fork ear；
Short fork ear displacement loading device includes:
Short fork ear adapter, one end is ears structure, for connecting with short fork ear；
Short fork ear pressurized strut, piston rod are connect with the other end of short fork ear joint；Wherein,
When short fork ear adapter is connect with short fork ear, short fork ear is located between the ears structure of short fork ear adapter, and short
The axis for pitching ear adapter is overlapped with the axis of through-hole on short fork ear.
According at least one embodiment of the application, displacement loading device further includes having:
Two pillars；
Crossbeam is erected between two columns, and wall surface offers two U-shaped through-holes；
Two lifting lugs, wherein
One lifting lug one end is connect with the pressurized strut of bar fork ear far from one end of bar fork ear adapter, and the other end passes through one
U-shaped through-hole, and can be in the U-shaped through-hole along the axial movement of crossbeam；
Another lifting lug one end is connect with short fork ear pressurized strut far from one end of short fork ear adapter, and the other end passes through another
One U-shaped through-hole, and can be in the U-shaped through-hole along the axial movement of crossbeam.
According at least one embodiment of the application, shimmy loading device includes:
Shimmy connector, one end are used to connect with restraint lock testpieces bar fork ear；
Shimmy pressurized strut, piston rod are connect with the other end of shimmy connector；
Wherein,
When shimmy connector is connect with bar fork ear, axis is overlapped with shimmy loaded line is made a reservation for.
According at least one embodiment of the application, shimmy loading device further includes having shimmy oscillating bearing, collar wall
Face is connect with shimmy connector far from the end face of shimmy pressurized strut one end；
When shimmy connector is connect with bar fork ear, shimmy oscillating bearing is located between bar fork ear auricle, and its inner ring with pass through
Bar fork ear auricle is bolted.
According at least one embodiment of the application, shimmy loading device further includes having shimmy support, and shimmy pressurized strut is remote
It is connect from shimmy connector one end with shimmy support；According at least one embodiment of the application, flight loading device includes:
Flight load connector, one end be used for restraint lock testpieces on damper connect the bolt on boss connect；
Flight load pressurized strut, piston rod are connect with the other end of flight load connector；
Wherein,
Flight load connector connect the connection of the bolt on boss, axis and predetermined flight loaded line weight with two dampers
It closes.
According at least one embodiment of the application, flight loading device further includes having:
Flight load oscillating bearing, the end face of outer ring wall and flight load connector far from flight load pressurized strut one end
Connection；
Flight load support, the one end of flight load pressurized strut far from flight load connector are connect with flight load support；
Flight load support can be fixedly installed in one of multiple pre-set flight loading positions；
Wherein,
Flight load connector connect the connection of the bolt on boss, flight load oscillating bearing inner ring and damping with damper
Device connects that the bolt on boss connects.
At least there are following advantageous effects in the application: providing a kind of Helicopter Main Hub support arm restraint lock fatigue examination
Experiment device, can accurate simulation Helicopter Main Hub support arm restraint lock installation and apply load boundary condition, can be right using the device
Main hub support arm restraint locks testpieces and applies displacement load, shimmy load and flight load, obtains its fatigue properties and its thin
Weak position is to assess its service life and is that improving and optimizating for its provides authentic data.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of Helicopter Main Hub support arm restraint lock experimental piece provided by the embodiments of the present application；
Fig. 2 is displacement loading device operation schematic diagram provided by the embodiments of the present application；
Fig. 3 is displacement loading device partial structure diagram provided by the embodiments of the present application；
Fig. 4 is shimmy loading device operation schematic diagram provided by the embodiments of the present application；
Fig. 5 is shimmy loading device partial structure diagram provided by the embodiments of the present application；
Fig. 6 is flight loading device operation schematic diagram provided by the embodiments of the present application；
Fig. 7 is flight loading device partial structure diagram provided by the embodiments of the present application.
Specific embodiment
The application is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining related application, rather than the restriction to this application.It also should be noted that in order to
Convenient for description, part relevant to the application is illustrated only in attached drawing.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The application is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
It should be noted that in the description of the present application, term " center ", "upper", "lower", "left", "right", "vertical",
The direction of the instructions such as "horizontal", "inner", "outside" or the term of positional relationship are direction based on the figure or positional relationship, this
It is intended merely to facilitate description, rather than indication or suggestion described device or element must have a particular orientation, with specific
Orientation construction and operation, therefore should not be understood as the limitation to the application.In addition, term " first ", " second ", " third " are only used
In description purpose, it is not understood to indicate or imply relative importance.
In addition it is also necessary to explanation, in the description of the present application unless specifically defined or limited otherwise, term " peace
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.To those skilled in the art, it can understand that above-mentioned term exists as the case may be
Concrete meaning in the application.
1 to Fig. 7 the application is described in further details with reference to the accompanying drawing.
A kind of Helicopter Main Hub support arm restraint lock fatigue experimental device, comprising:
Testpieces fixes device, locks testpieces to fixed restraint；
Displacement loading device, for being connect with restraint lock testpieces, to apply displacement load to restraint lock testpieces；
Shimmy loading device, for being connect with restraint lock testpieces, to apply shimmy load to restraint lock testpieces；
Flight loading device, for being connect with restraint lock testpieces, to apply flight load to restraint lock testpieces.
In some alternative embodiments, the fixed device of testpieces includes:
Bottom plate 5；
Two columns 6 are fixedly installed in 5 side wall surface of bottom plate；
When the fixed restraint lock testpieces of the fixed device of testpieces, restraint locks the fixed position 1 and two columns 6 of testpieces
Wall surface is fixedly connected, and restraint lock 2 through-hole of testpieces bar fork ear axis and restraint lock testpieces it is short fork 3 through-hole of ear axis with
Bottom plate 5 is vertical.
In some alternative embodiments, the axis of restraint lock 2 through-hole of testpieces bar fork ear is known as bar fork trunnion line；Restraint
The axis of short fork 3 through-hole of ear of lock testpieces is known as short fork trunnion line；
Displacement loading device includes: bar fork ear displacement loading device, and one end with bar fork ear 2 for connecting, along bar fork ear
Axis applies bar fork ear displacement power to bar fork ear 2；Short fork ear displacement loading device, one end with short fork ear 3 for connecting, along short
Fork trunnion line applies short fork ear displacement power to short fork ear 3；Displacement load includes: bar fork ear displacement power and short fork ear displacement power.
In some alternative embodiments, bar fork ear displacement loading device includes: bar fork ear adapter 7, and one end is ears
Structure, for being connect with bar fork ear 2；Bar fork ear pressurized strut 8, piston rod are connect with the other end of long fork ear joint 7；Wherein,
When bar fork ear adapter 7 is connect with bar fork ear 2, bar fork ear 7 is located between the ears structure of bar fork ear adapter 7, and bar fork ear
The axis of adapter 7 is overlapped with 2 through-bore axis of bar fork ear；
Short fork ear displacement loading device includes: short fork ear adapter 9, and one end is ears structure, for connecting with short fork ear 3
It connects；Short fork ear pressurized strut 10, piston rod are connect with the other end of short fork ear joint 9；Wherein, short fork ear adapter 9 and short fork
When ear 3 connects, short fork ear 3 is located between the ears structure of short fork ear adapter 9, and the axis and short fork of short fork ear adapter 9
3 through-bore axis of ear is overlapped.
When bar fork ear adapter 7 is connect with bar fork ear 2, those skilled in the art can in the art in known range into
Row selection, for example, the screw rod or bolt that can be used across 7 ears piece of bar fork ear adapter are connect with bar fork ear 2, herein by bar fork
7 one end of ear adapter is designed to ears structure, primarily to convenient for being connect with bar fork ear 2, and be easy to adjust its axis and length
It pitches 2 through-bore axis of ear to be overlapped, applies bar fork ear displacement power accurately to lock to main hub support arm restraint.Based on similar reason and
Short fork ear adapter 9 is used to be designed as ears structure with one end that short fork ear 3 is connect by purpose.
In some alternative embodiments, displacement loading device further includes having: two pillars 11；Crossbeam 12, is erected at two
Between column 11, wall surface offers two U-shaped through-holes 13；Two lifting lugs, wherein a lifting lug one end and bar fork ear pressurized strut 8
Far from bar fork ear adapter 7 one end connect, the other end pass through a U-shaped through-hole 13, and can in the U-shaped through-hole 13 edge
The axial movement of crossbeam 12；Another lifting lug one end is connect with short fork ear pressurized strut 10 far from one end of short fork ear adapter 9,
The other end passes through another U-shaped through-hole 13, and can be in the U-shaped through-hole 13 along the axial movement of crossbeam 12.Above-mentioned setting, one
Aspect can easily be adjusted the locality of bar fork ear pressurized strut 8 and short fork ear pressurized strut 10, make bar fork ear adapter 7
Axis be overlapped with the axis of through-hole on bar fork ear 2 and it is short fork ear adapter 9 axis and it is short fork ear 3 on through-hole axis weight
It closes；On the other hand, its freedom degree can be constrained, prevents it from occurring inclined when bar fork ear pressurized strut 8 and short fork ear pressurized strut 10 work
It moves.
In some alternative embodiments, shimmy loading device includes: shimmy connector 14, and one end is used to lock with restraint and try
Test the connection of part bar fork ear 2；Shimmy pressurized strut 15, piston rod are connect with the other end of shimmy connector 14；Wherein, shimmy connector 14
When connecting with bar fork ear 2, axis is overlapped with shimmy loaded line is made a reservation for.For those skilled in the art, so it is easy to understand that on
State make a reservation for shimmy loaded line can according to Helicopter Main Hub support arm restraint lock reality suffered by shimmy load carry out its determination.
In some alternative embodiments, shimmy loading device further includes having shimmy oscillating bearing, outer ring wall and pendulum
The connector 14 that shakes is connected far from the end face of shimmy 15 one end of pressurized strut；When shimmy connector 14 is connect with bar fork ear 2, shimmy oscillating bearing
Between 2 auricle of bar fork ear, and its inner ring is bolted with 2 auricle of bar fork ear is passed through.Above-mentioned setting, tunable are shimmy
Load load deflection and adjustment load angle.
In some alternative embodiments, shimmy loading device further includes having shimmy support 18, and shimmy pressurized strut 15 is separate
Shimmy 14 one end of connector is connect with shimmy support 18；Shimmy support 18 can be fixedly installed in multiple one of shimmy positions of presetting.
To this it will be readily appreciated by those skilled in the art that shimmy support 18 is preset shimmy position at one according to needs when test
It is fixed, and cooperate and adjust its bottom level, can readily adjust with the axis of shimmy connector 14 with to make a reservation for shimmy loaded line close.
In some alternative embodiments, flight loading device includes: flight load connector 19, and one end is used to lock with restraint
Testpieces damper connects that the bolt on boss 4 connects；Flight load pressurized strut 16, piston rod and flight load connector 19
Other end connection；Wherein, flight load connector 19 connect with two dampers the bolt on boss 4 connection, axis with make a reservation for
Flight loaded line is overlapped.
In some alternative embodiments, flight loading device further includes having: flight load oscillating bearing, outer ring wall
It is connect with flight load connector 19 far from the end face of flight load 16 one end of pressurized strut；Flight load support 17, has fly thereon
Row loads tie point, and flight load pressurized strut 16 loads flight on one end and flight load support 17 of connector 19 far from flight and adds
Carry the position connection where tie point；Flight load support 17 can be fixedly installed in one of multiple pre-set flight loading positions,
And the height of the tie point of flight load thereon can be adjusted；Wherein, flight load connector 19 connect the spiral shell on boss 4 with damper
Tether when connecing, flight load oscillating bearing inner ring connect that the bolt on boss 4 connects with damper.
In some alternative embodiments, above-mentioned experimental rig further includes test platform, and bottom plate 5, two pillars 11 are being tested
Be fixedly installed on platform, and it is multiple preset shimmy position, multiple pre-set flight loading positions are located on test platform, in use
When stating experimental rig, which skilled person shimmy support 18 can preset shimmy position and fly at determine according to actual needs
Row load support 17 is fixed in which pre-set flight loading position.
So far, it has been combined preferred embodiment shown in the drawings and describes the technical solution of the application, still, this field
Technical staff is it is easily understood that the protection scope of the application is expressly not limited to these specific embodiments.Without departing from this
Under the premise of the principle of application, those skilled in the art can make equivalent change or replacement to the relevant technologies feature, these
Technical solution after change or replacement is fallen within the protection scope of the application.
Claims (10)
1. a kind of Helicopter Main Hub support arm restraint locks fatigue experimental device characterized by comprising
Testpieces fixes device, locks testpieces to fixed restraint；
Displacement loading device, for being connect with restraint lock testpieces, to apply displacement load to restraint lock testpieces；
Shimmy loading device, for being connect with restraint lock testpieces, to apply shimmy load to restraint lock testpieces；
Flight loading device, for being connect with restraint lock testpieces, to apply flight load to restraint lock testpieces.
2. experimental rig according to claim 1, which is characterized in that the testpieces fixes device and includes:
Bottom plate (5)；
Two columns (6) are fixedly installed on the wall surface of the bottom plate (5) side；
When the fixed restraint lock testpieces of the fixed device of the testpieces, the fixed position (1) of the restraint lock testpieces with
The wall surface of two columns (6) is fixedly connected, and the axis of ear (2) through-hole and the limit on restraint lock testpieces bar fork
The axis of through-hole is vertical with the bottom plate (5) on dynamic short fork ear (3) of lock testpieces.
3. experimental rig according to claim 1, which is characterized in that
The axis of through-hole is known as bar fork trunnion line on restraint lock testpieces bar fork ear (2)；
The axis of through-hole is known as short fork trunnion line on short fork ear (3) of restraint lock testpieces；
The displacement loading device includes:
Bar fork ear displacement loading device, one end for being connect with the bar fork ear (2), with along the bar fork trunnion line to the length
It pitches ear (2) and applies bar fork ear displacement power；
Short fork ear displacement loading device, one end for being connect with the short fork ear (3), with along the short fork trunnion line to described short
It pitches ear (3) and applies short fork ear displacement power.
4. experimental rig according to claim 3, which is characterized in that
The bar fork ear displacement loading device includes:
Bar fork ear adapter (7), one end is ears structure, for connecting with the bar fork ear (2)；
Bar fork ear pressurized strut (8), piston rod are connect with the other end of the long fork ear joint (7)；Wherein,
When the bar fork ear adapter (7) connect with the bar fork ear (2), the bar fork ear (7) is located at bar fork ear switching
Between the ears structure of head (7), and the axis of the bar fork ear adapter (7) is overlapped with the axis of through-hole on the bar fork ear 2；
The short fork ear displacement loading device includes:
Short fork ear adapter (9), one end is ears structure, for connecting with the short fork ear (3)；
Short fork ear pressurized strut (10), piston rod are connect with the other end of the short fork ear joint (9)；Wherein,
When the short fork ear adapter (9) connect with the short fork ear (3), the short fork ear (3) is located at the short fork ear switching
Between the ears structure of head (9), and the axis of short fork ear adapter (9) is overlapped with the axis of through-hole on the short fork ear 3.
5. experimental rig according to claim 4, which is characterized in that the displacement loading device further includes having:
Two pillars (11)；
Crossbeam (12) is erected between two columns (11), and wall surface offers two U-shaped through-holes (13)；
Two lifting lugs, wherein
One described lifting lug one end is connect with the bar fork ear pressurized strut (8) far from one end of the bar fork ear adapter (7),
The other end passes through a U-shaped through-hole (13), and can be in the U-shaped through-hole (13) along the axial direction fortune of the crossbeam (12)
It is dynamic；
Another described lifting lug one end and short fork ear pressurized strut (10) connect far from one end of short fork ear adapter (9)
It connects, the other end passes through another described U-shaped through-hole (13), and can be in the U-shaped through-hole (13) along the crossbeam (12)
It is axially moved.
6. experimental rig according to claim 1, which is characterized in that the shimmy loading device includes:
Shimmy connector (14), one end are used to connect with restraint lock testpieces bar fork ear (2)；
Shimmy pressurized strut (15), piston rod are connect with the other end of the shimmy connector (14)；
Wherein,
When the shimmy connector (14) connect with the bar fork ear (2), axis is overlapped with shimmy loaded line is made a reservation for.
7. experimental rig according to claim 6, which is characterized in that the shimmy loading device further includes having shimmy joint
Bearing, outer ring wall are connect with the shimmy connector (14) far from the end face of described shimmy pressurized strut (15) one end；
When the shimmy connector (14) connect with the bar fork ear (2), the shimmy oscillating bearing is located at bar fork ear (2) ear
Between piece, and its inner ring is bolted with bar fork ear (2) auricle is passed through.
8. experimental rig according to claim 6, which is characterized in that the shimmy loading device further includes having shimmy support
(18), the shimmy pressurized strut (15) connect far from described shimmy connector (14) one end with the shimmy support (18)；
The shimmy support (18) can be fixedly installed in multiple one of shimmy positions of presetting.
9. experimental rig according to claim 1, which is characterized in that the flight loading device includes:
Flight load connector (19), one end, which is used to connect the bolt on boss (4) with damper on restraint lock testpieces, to be connected
It connects；
Flight load pressurized strut (16), piston rod are connect with the other end of flight load connector (19)；
Wherein,
Flight load connector (19) connect the connection of the bolt on boss (4) with two dampers, axis with make a reservation for
Flight loaded line is overlapped.
10. experimental rig according to claim 9, which is characterized in that the flight loading device further includes having:
Flight load oscillating bearing, outer ring wall and flight load connector (19) load pressurized strut far from the flight
(16) the end face connection of one end；
Flight load support (17), flight load pressurized strut (16) one end and institute far from flight load connector (19)
State flight load support (17) connection；
Flight load support (17) can be fixedly installed in one of multiple pre-set flight loading positions；
Wherein,
Flight load connector (19) connect the connection of the bolt on boss (4) with the damper, and the flight loads joint shaft
Hold that the bolt that inner ring is connect on boss (4) with the damper connects.
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| CN201811346511.3A CN109533387A (en) | 2018-11-13 | 2018-11-13 | A kind of Helicopter Main Hub support arm restraint lock fatigue experimental device |
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| CN111099036B (en) * | 2019-11-22 | 2021-09-17 | 南京航空航天大学 | Fatigue test device and method for landing gear ejection main force transfer structure |
| 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 |
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Application publication date: 20190329 |