CN109187019B - Oscillating oil cylinder loaded type main rotor ball socket bearing comprehensive test machine - Google Patents
Oscillating oil cylinder loaded type main rotor ball socket bearing comprehensive test machine Download PDFInfo
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- CN109187019B CN109187019B CN201811282484.8A CN201811282484A CN109187019B CN 109187019 B CN109187019 B CN 109187019B CN 201811282484 A CN201811282484 A CN 201811282484A CN 109187019 B CN109187019 B CN 109187019B
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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
- G01M13/04—Bearings
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Abstract
The present invention discloses a kind of oscillating oil cylinder loaded type main rotor ball socket bearing comprehensive test machine, it is related to Helicopter Main rotor system bearing test technical field, including scaffold, transmission main shaft, large conical gear, small conical gear, drive shaft, main reducing gear, driving motor, hydraulic rotary joint shell, vane type oscillating oil cylinder, hydraulic station, rotor platform, auto-bank unit rotating ring, the not components such as rotating ring, big ball socket bearing, biserial thin-wall bearing, pitch-change-link, toggle, anti-torque arm, power-assisted oil cylinder, oil cylinder swing rod, central post, attachment base, hinge.The load same-phase of loading procedure of the present invention and Helicopter Main rotor system, same frequency, the loaded-up condition of energy real simulation Helicopter Main rotor system, it is able to achieve the load of alternating load, pulsating load and permanent load, guarantees that the determination of each class bearing service life of main rotor system is more accurate, more objective.
Description
Technical field
The present invention relates to Helicopter Main rotor system bearing test technical fields, load more particularly to a kind of oscillating oil cylinder
Formula main rotor ball socket bearing comprehensive test machine.
Background technique
For helicopter in flight course, the failure of any composition component can all cause catastrophic effect.Therefore to helicopter
The determination for forming component service life is a very serious and important job.In order to accurately determine that helicopter forms component
Service life, it is common practice that the fatigue test under the conditions of simulation real working condition is carried out to helicopter composition component, then logical
The fatigue life that overtesting acquires is divided by the service life that a safety coefficient is that aviation aircraft forms component.
Helicopter Main rotor system is one of core component of helicopter, the connection between each movable part of main rotor system
It is to be realized by each class bearing (ball socket bearing, hard alloy sleeve bearing and rolling bearing etc.).Previous main rotor system is each
The experiment of bearing service life is all made of single bearing and carries out on fatigue tester.The disadvantage is that: it is straight to be 1. difficult to accurate simulation
Rise the true working condition of the various bearings of owner's rotor system；2. which class or which bearing be difficult in accurate judgement main rotor system
For weakest link, the longevity of determining for leading to Helicopter Main rotor system bearing, there are large errors.Due to safety concerns, it will generally lead
Fixed relatively low of the service life of rotor system bearing, causes the waste in bearing use, while increasing maintenance cost.
Therefore, developing the Helicopter Main rotor system bearings synthesis experimental machine that forms a complete set of is very important.
Summary of the invention
The object of the present invention is to provide a kind of oscillating oil cylinder loaded type main rotor ball socket bearing comprehensive test machines, on solving
Problem of the existing technology is stated, the real working condition condition of energy each class bearing of accurate simulation Helicopter Main rotor system can guarantee
The determination of each class bearing service life of main rotor system is more accurate, more objective.
To achieve the above object, the present invention provides following schemes: the present invention provides a kind of main rotation of oscillating oil cylinder loaded type
Wing ball socket bearing comprehensive test machine, including scaffold, transmission main shaft, driving motor, hydraulic rotary joint shell, vane type pendulum
Dynamic oil cylinder, hydraulic station, rotor platform and auto-bank unit；The scaffold fixes on the ground, on the scaffold
The transmission main shaft is supported in medium pore in the middle part of platform, the driving motor is for driving the transmission main shaft to rotate；Institute
The lower end for stating transmission main shaft connects firmly the rotor platform, and the vane type oscillating oil cylinder is connected to the side of the rotor platform,
The rotary shaft of the vane type oscillating oil cylinder and the rotary shaft of rotor platform are at plumbness；
The output shaft of the vane type oscillating oil cylinder is connect with one end of an oil cylinder swing rod, the oil cylinder swing rod it is another
End connect by the 7th hinge with one end of a pitch-change-link, the other end of the pitch-change-link by the 6th hinge with it is described certainly
Dynamic inclinator is connected；The lower part of the rotor platform is connected with toggle swing rod I, the toggle swing rod I by the 8th hinge
Toggle swing rod II is also connected with by the 9th hinge, the toggle swing rod II passes through the tenth hinge and the auto-bank unit
It is connected；Central post, the central post and the auto-bank unit clearance fit are fixed on the scaffold；
The lower section of the auto-bank unit also passes through first axle and is connected with anti-torque arm swing rod I, and the anti-torque arm swing rod I is logical
It crosses second hinge and connects anti-torque arm swing rod II, the anti-torque arm swing rod II is connected by third hinge with the scaffold；Institute
It states and is also fixedly connected with attachment base below auto-bank unit, the attachment base passes through the piston rod phase of the 5th hinge and a power-assisted oil cylinder
Even, the cylinder body of the power-assisted oil cylinder is connected by the 4th hinge with the scaffold；
The top seal of the transmission main shaft is connected with a hydraulic rotary joint shell, the transmission main shaft with it is described hydraulic
Rotary joint shell is rotatably assorted, and the hydraulic rotary joint shell is solid by hydraulic rotary joint fixed frame and scaffold
Even；The hydraulic station is joined by the internal hydraulic pressure oil channel of third high-pressure hose, the 4th high-pressure hose and the transmission main shaft
Internal hydraulic pressure oil logical, that the vane type oscillating oil cylinder passes through the first high-pressure hose, the second high-pressure hose and the transmission main shaft
Channel connection.
Preferably, pass through the first double-row bearing and the second double-row bearing in the medium pore in the middle part of the scaffold upper mounting plate
Support the transmission main shaft.
Preferably, a large conical gear is connected firmly on the transmission main shaft, the driving motor is connected firmly with a main reducing gear,
A drive shaft is fixedly connected on the output shaft of the main reducing gear, the drive shaft passes through third double-row bearing and the scaffold
Connection, the end of the drive shaft is fixed with the small conical gear engaged with the large conical gear.
Preferably, the pitch-change-link is constituted by two sections, and two sections of pitch-change-links are connected by a pull pressure sensor
Together.
Preferably, the auto-bank unit includes rotating ring, the not rotating ring, big ball socket bearing that ecto-entad is set gradually
Outer ring and big ball socket bearing inner ring, the big ball socket bearing inner ring and the central post clearance fit, outside the big ball socket bearing
Ring is located at the outside of the big ball socket bearing inner ring, and the not rotating ring is connected firmly with the big ball socket bearing outer ring, the rotation
Ring is connect by biserial thin-wall bearing with the not rotating ring.
Preferably, the pitch-change-link is connected by the 6th hinge with the rotating ring, the toggle swing rod II
It is connected by the tenth hinge with the rotating ring；The anti-torque arm swing rod I is not rotated by the first axle with described
Ring is connected, and the attachment base is connected firmly with the not rotating ring.
Preferably, the first axle, second hinge, third hinge, the 8th hinge, the 9th hinge and the tenth hinge are
Column hinge.
Preferably, the 4th hinge, the 5th hinge, the 6th hinge and the 7th hinge are flexural pivot.
Preferably, the hydraulic station includes fuel tank, and the fuel tank is connected by the first oil pipe and the third high-pressure hose
Logical, the fuel tank is connected to by the second oil pipe with the 4th high-pressure hose.
Preferably, the junction of first oil pipe and the third high-pressure hose has been arranged in parallel the first servo valve and the
The junction of one check valve, second oil pipe and the 4th high-pressure hose has been arranged in parallel the second servo valve and second unidirectionally
Valve.
The present invention achieves following technical effect compared with the existing technology:
1) the load same-phase of the loading procedure of the invention and Helicopter Main rotor system, same frequency, energy real simulation are straight
Rise the loaded-up condition of owner's rotor system；
2) it is able to achieve the load of alternating load, pulsating load and permanent load.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is oscillating oil cylinder loaded type main rotor ball socket bearing comprehensive test machine schematic diagram of the present invention；
Fig. 2 is hydraulic station schematic illustration of the present invention；
Fig. 3 is vane type oscillating oil cylinder operation principle schematic diagram of the present invention；
Wherein, 1. first axle, 2. second hinges, 3. anti-torque arm swing rod II, 4. third hinges, 5. anti-torque arm swing rod I, 6.
Central post, 7. scaffolds, 8. big ball socket bearing inner ring, 9. big ball socket bearing outer rings, 10. the 4th hinges, 11. power-assisted oil cylinders,
12. the 5th hinge, 13. attachment bases, 14. the 6th hinges, 15. pitch-change-links, 16. oil cylinder swing rods, 17. the 7th hinges, 18. blades
Formula oscillating oil cylinder, 19. stators, 20. blades, 21. first high-pressure hoses, 22. small conical gears, 23. drive shafts, 24. driving electricity
Machine, 25. main reducing gears, 26. first double-row bearings, 27. hydraulic stations, 28. third high-pressure hoses, 29. the 4th high-pressure hoses,
30. hydraulic rotary joint shell, 31. hydraulic rotary joint fixed frames, 32. second double-row bearings, 33. large conical gears, 34.
Three double-row bearings, 35. second high-pressure hoses, 36. transmission main shafts, 37. rotor platforms, 38. the 8th hinges, 39. toggle swing rods
I, 40. the 9th hinges, 41. toggle swing rod II, 42. the tenth hinges, 43. rotating rings, 44. biserial thin-wall bearings, 45. do not rotate
Ring, 46. blocks, 47. pull pressure sensor, 48. hydraulic fluid ports, 49. first check valves, 50. first servo valves, 51. first oil pipes,
52. fuel tank, 53. second oil pipes, 54. second servo valves, 55. second one-way valves, 52. fuel tanks.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The object of the present invention is to provide a kind of oscillating oil cylinder loaded type main rotor ball socket bearing comprehensive test machines, on solving
Problem of the existing technology is stated, the real working condition condition of energy each class bearing of accurate simulation Helicopter Main rotor system can guarantee
The determination of each class bearing service life of main rotor system is more accurate, more objective.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
Embodiment
As shown in Figure 1, the present embodiment provides a kind of oscillating oil cylinder loaded type main rotor ball socket bearing comprehensive test machines, including
Scaffold, transmission main shaft, driving motor, hydraulic rotary joint shell, vane type oscillating oil cylinder, hydraulic station, rotor platform
And auto-bank unit；Scaffold 7 fixes on the ground, and central emptying aperture is provided in the middle part of the platform on scaffold 7, center
Transmission main shaft 36 is supported by the first double-row bearing of a pair 32 setting up and down and a pair of second double-row bearing 34 in hole.Driving electricity
Machine is for driving transmission main shaft to rotate, specifically, a large conical gear 33 is connected firmly on transmission main shaft 36, with large conical gear 33
The small conical gear 22 of Vertical Meshing is fixed in drive shaft 23, and drive shaft 23 and the output shaft of main reducing gear 25 connect firmly, driving
Motor 24 is connected firmly with main reducing gear 25, and driving motor 24 passes through main reducing gear 25, drive shaft 23, small conical gear 22, big circular cone
Gear 33 drives transmission main shaft 36 to rotate, and 36 lower end of transmission main shaft connects firmly rotor platform 37.
Vane type oscillating oil cylinder 18 is connected to the side of rotor platform 37, the rotary shaft and rotor of vane type oscillating oil cylinder 18
For the rotary shaft of platform 37 in space at plumbness, one end of oil cylinder swing rod 16 is connected in the output shaft of vane type oscillating oil cylinder 18
On, the other end of oil cylinder swing rod 16 is connected by the 7th hinge 17 with one end of pitch-change-link 15, the other end of pitch-change-link 15
It is connected by the 6th hinge 14 with the rotating ring 43 of auto-bank unit；Wherein pitch-change-link 15 is constituted by two sections, and two sections of displacements are drawn
Bar is fixed together by a pull pressure sensor 47.Pass through the 8th hinge 38 and toggle swing rod in the lower part of rotor platform 37
I39 is connected, and is connected between toggle swing rod I39 and toggle swing rod II41 by the 9th hinge 40, and toggle swing rod II41 is logical
The tenth hinge 42 is crossed to be connected with the rotating ring 43 of auto-bank unit.
It is linked together, is not revolved by biserial thin-wall bearing 44 between the rotating ring 43 of auto-bank unit and not rotating ring 45
Change 45 is connected firmly with big ball socket bearing outer ring 9, and big ball socket bearing inner ring 8 and central post 6 are clearance fit, and central post 6 is fixed on
On scaffold 7.
Anti- torque arm swing rod I5 is connected by first axle 1 with the not rotating ring 45 of auto-bank unit, anti-torque arm swing rod I5 and
Anti- torque arm swing rod II3 is connected by second hinge 2, and anti-torque arm swing rod II3 is connected by third hinge 4 with scaffold 7.Connection
Seat 13 and the lower section of auto-bank unit not rotating ring 45 connect firmly, the piston that attachment base 13 passes through the 5th hinge 12 and power-assisted oil cylinder 11
Bar is connected, and the cylinder body of power-assisted oil cylinder 11 is connected by the 4th hinge 10 with scaffold 7, the top of transmission main shaft 36 and a liquid
Pressure rotary joint shell 30 constitutes being rotatably assorted with sealing, and hydraulic rotary joint shell 30 passes through hydraulic rotary joint fixed frame
31 are connected with scaffold 7.
Hydraulic station 27 passes through third high-pressure hose 28, the 4th high-pressure hose 29, hydraulic rotary joint shell 30 and transmission
The internal hydraulic pressure oil channel connection of main shaft 36, vane type oscillating oil cylinder 18 pass through the first high-pressure hose 21, the second high-pressure hose 35
With the internal hydraulic pressure oil channel connection of transmission main shaft 36.
First axle 1, second hinge 2, third hinge 4, the 8th hinge 38, the 9th hinge 40 and the tenth hinge in the present embodiment
Chain 42 is column hinge, i.e., connected two component can only around hinge axis relatively rotate, and cannot have the opposite fortune of other forms
It is dynamic；These columns hinge is subject bearing.4th hinge 10, the 5th hinge 12, the 6th hinge 14 and the 7th hinge 17 are flexural pivot,
It can relatively rotate, but cannot be relatively moved around three change in coordinate axis direction between i.e. connected two component, these flexural pivots are subject
Bearing.
As shown in Fig. 2, hydraulic station 27 includes fuel tank 52 in the present embodiment, fuel tank passes through the first oil pipe 51 and third high pressure
Hose 28 is connected to, and fuel tank is connected to by the second oil pipe 53 with the 4th high-pressure hose 29.First oil pipe 51 and third high-pressure hose 28
Junction be arranged in parallel the first servo valve 50 and the first check valve 49, the connection of the second oil pipe 53 and the 4th high-pressure hose 29
Place has been arranged in parallel the second servo valve 54 and second one-way valve 55.
The course of work of the invention is as follows: driving motor 24 by main reducing gear 25, drive shaft 23, small conical gear 22,
Large conical gear 33, transmission main shaft 36 drive rotor platform 37 and the vane type oscillating oil cylinder 18 being attached thereto, the first high pressure soft
Pipe 21,35 synchronous rotary of the second high-pressure hose, rotor platform 37 pass through the 8th hinge 38, toggle swing rod I39, the 9th hinge
40, toggle swing rod II41, the tenth hinge 42 drive the rotating ring 43 of auto-bank unit to rotate, rotor platform 37 and wing drop
The rotation of device rotating ring 43 drives the synchronous rotation of pitch-change-link 15, pull pressure sensor 47, the 7th hinge 17 by the 6th hinge 14
Turn.
While testing machine rotary motion, 11 piston rod of power-assisted oil cylinder pumps, by the 5th hinge 12,
Attachment base 13 drives auto-bank unit, and rotating ring 45, biserial thin-wall bearing 44, rotating ring 43, big ball socket bearing outer ring 9 be not reciprocal
It swings.The reciprocally swinging of auto-bank unit rotating ring 43 passes through the 6th hinge 14, pitch-change-link 15, pull pressure sensor 47, the
20 reciprocally swinging of blade of seven hinges 17, oil cylinder swing rod 16 with movable blade oscillating oil cylinder 18.
Oil liquid when (orientation as shown in Figure 3) is swung the blade 20 of vane type oscillating oil cylinder 18 counterclockwise, in fuel tank 52
By in the second oil pipe 53, second one-way valve 55, the 4th high-pressure hose 29, hydraulic rotary joint shell 30, transmission main shaft 36
Portion's hydraulic oil channel, the second high-pressure hose 35, left side hydraulic fluid port 48 be inhaled into the left chamber of vane type oscillating oil cylinder 18, and and blade
The first check valve 49 that 18 right chamber of formula oscillating oil cylinder is connected is in close state, the oil liquid in 18 right chamber of vane type oscillating oil cylinder
The first high-pressure hose 21, the internal hydraulic pressure oil channel of transmission main shaft 36, hydraulic rotary joint shell 30, third high pressure can only be passed through
Hose 28, the first servo valve 50 enter fuel tank 52, just vane type can control to swing by control 50 valve port size of the first servo valve
The load of oil cylinder 18.
When the vane clockwise (orientation as shown in Figure 3) of vane type oscillating oil cylinder 18 is swung, the oil liquid in fuel tank 52 is logical
Cross the inside of the first oil pipe 51, the first check valve 49, third high-pressure hose 28, hydraulic rotary joint shell 30, transmission main shaft 36
Hydraulic oil channel, the first high-pressure hose 21 are inhaled into the right chamber of vane type oscillating oil cylinder 18, and left with vane type oscillating oil cylinder 18
The second one-way valve 55 that chamber is connected is in close state, and the oil liquid in 18 left chamber of vane type oscillating oil cylinder can only be high by second
Pressure hose 35, the internal hydraulic pressure oil channel of transmission main shaft 36, hydraulic rotary joint shell 30, the 4th high-pressure hose 29, second are watched
Valve 54 is taken into fuel tank, just can control the load of load cylinder by control 54 valve port size of the second servo valve.
Specific examples are applied in the present invention, and principle and implementation of the present invention are described, above embodiments
Illustrate to be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art, according to
According to thought of the invention, there will be changes in the specific implementation manner and application range.In conclusion the content of the present specification
It should not be construed as limiting the invention.
Claims (10)
1. a kind of oscillating oil cylinder loaded type main rotor ball socket bearing comprehensive test machine, it is characterised in that: including scaffold, transmission
Main shaft, driving motor, hydraulic rotary joint shell, vane type oscillating oil cylinder, hydraulic station, rotor platform and auto-bank unit；
The scaffold fixes on the ground, is supported with the transmission main shaft in the medium pore in the middle part of the scaffold upper mounting plate,
The driving motor is for driving the transmission main shaft to rotate；The lower end of the transmission main shaft connects firmly the rotor platform, described
Vane type oscillating oil cylinder is connected to the side of the rotor platform, rotary shaft and the rotor platform of the vane type oscillating oil cylinder
Rotary shaft is at plumbness；
The output shaft of the vane type oscillating oil cylinder is connect with one end of an oil cylinder swing rod, and the other end of the oil cylinder swing rod is logical
It crosses the 7th hinge to connect with one end of a pitch-change-link, the other end of the pitch-change-link is inclined by the 6th hinge with described automatically
Oblique device is connected；The lower part of the rotor platform is connected with toggle swing rod I by the 8th hinge, and the toggle swing rod I is also logical
It crosses the 9th hinge and is connected with toggle swing rod II, the toggle swing rod II passes through the tenth hinge and the auto-bank unit phase
Even；Central post, the central post and the auto-bank unit clearance fit are fixed on the scaffold；
The lower section of the auto-bank unit also passes through first axle and is connected with anti-torque arm swing rod I, and the anti-torque arm swing rod I passes through the
Two hinge connects anti-torque arm swing rod II, and the anti-torque arm swing rod II is connected by third hinge with the scaffold；It is described from
Attachment base is also fixedly connected with below dynamic inclinator, the attachment base is connected by the 5th hinge with the piston rod of a power-assisted oil cylinder,
The cylinder body of the power-assisted oil cylinder is connected by the 4th hinge with the scaffold；
The top seal of the transmission main shaft is connected with a hydraulic rotary joint shell, the transmission main shaft and the hydraulic rotating
Joint shell is rotatably assorted, and the hydraulic rotary joint shell is connected by hydraulic rotary joint fixed frame and scaffold；Institute
It states hydraulic station and passes through the internal hydraulic pressure oil channel connection of third high-pressure hose, the 4th high-pressure hose and the transmission main shaft, institute
Vane type oscillating oil cylinder is stated to join by the internal hydraulic pressure oil channel of the first high-pressure hose, the second high-pressure hose and the transmission main shaft
It is logical.
2. oscillating oil cylinder loaded type main rotor ball socket bearing comprehensive test machine according to claim 1, it is characterised in that: institute
It states in the medium pore in the middle part of scaffold upper mounting plate and the transmission main shaft is supported by the first double-row bearing and the second double-row bearing.
3. oscillating oil cylinder loaded type main rotor ball socket bearing comprehensive test machine according to claim 1, it is characterised in that: institute
State and connect firmly a large conical gear on transmission main shaft, the driving motor is connected firmly with a main reducing gear, the main reducing gear it is defeated
A drive shaft is fixedly connected on shaft, the drive shaft is connect by third double-row bearing with the scaffold, the drive shaft
End be fixed with the small conical gear engaged with the large conical gear.
4. oscillating oil cylinder loaded type main rotor ball socket bearing comprehensive test machine according to claim 1, it is characterised in that: institute
It states pitch-change-link to be constituted by two sections, two sections of pitch-change-links are fixed together by a pull pressure sensor.
5. oscillating oil cylinder loaded type main rotor ball socket bearing comprehensive test machine according to claim 1, it is characterised in that: institute
Stating auto-bank unit includes rotating ring, not rotating ring, big ball socket bearing outer ring and the big ball socket bearing that ecto-entad is set gradually
Inner ring, the big ball socket bearing inner ring and the central post clearance fit, the big ball socket bearing outer ring are located at the big flexural pivot
The outside of bearing inner ring, the not rotating ring are connected firmly with the big ball socket bearing outer ring, and the rotating ring passes through biserial thin wall shaft
It holds and is connect with the not rotating ring.
6. oscillating oil cylinder loaded type main rotor ball socket bearing comprehensive test machine according to claim 5, it is characterised in that: institute
State pitch-change-link and be connected with the rotating ring by the 6th hinge, the toggle swing rod II pass through the tenth hinge and
The rotating ring is connected；The anti-torque arm swing rod I is connected by the first axle with the not rotating ring, the attachment base with
The not rotating ring connects firmly.
7. oscillating oil cylinder loaded type main rotor ball socket bearing comprehensive test machine according to claim 1, it is characterised in that: institute
Stating first axle, second hinge, third hinge, the 8th hinge, the 9th hinge and the tenth hinge is column hinge.
8. oscillating oil cylinder loaded type main rotor ball socket bearing comprehensive test machine according to claim 7, it is characterised in that: institute
Stating the 4th hinge, the 5th hinge, the 6th hinge and the 7th hinge is flexural pivot.
9. oscillating oil cylinder loaded type main rotor ball socket bearing comprehensive test machine according to claim 1, it is characterised in that: institute
Stating hydraulic station includes fuel tank, and the fuel tank is connected to by the first oil pipe with the third high-pressure hose, and the fuel tank passes through the
Two oil pipes are connected to the 4th high-pressure hose.
10. oscillating oil cylinder loaded type main rotor ball socket bearing comprehensive test machine according to claim 9, it is characterised in that:
The junction of first oil pipe and the third high-pressure hose has been arranged in parallel the first servo valve and the first check valve, and described the
The junction of two oil pipes and the 4th high-pressure hose has been arranged in parallel the second servo valve and second one-way valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811282484.8A CN109187019B (en) | 2018-10-31 | 2018-10-31 | Oscillating oil cylinder loaded type main rotor ball socket bearing comprehensive test machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811282484.8A CN109187019B (en) | 2018-10-31 | 2018-10-31 | Oscillating oil cylinder loaded type main rotor ball socket bearing comprehensive test machine |
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| CN109187019A CN109187019A (en) | 2019-01-11 |
| CN109187019B true CN109187019B (en) | 2019-07-26 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112213101B (en) * | 2020-10-16 | 2022-06-17 | 中国直升机设计研究所 | Durability test bed for torsion arm swing-proof bearing of helicopter |
| CN113532859B (en) * | 2021-08-27 | 2024-06-07 | 中浙高铁轴承有限公司 | Engine input end shafting bearing testing machine and testing method |
| CN114184543A (en) * | 2021-12-06 | 2022-03-15 | 湖南楚榆智能科技有限公司 | Shaft sleeve friction coefficient detection experiment machine |
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| CN109187019A (en) | 2019-01-11 |
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