CN201251508Y - Cantilever supporting mechanism in helicopter inclinator thin-wall bearing detecting device - Google Patents
Cantilever supporting mechanism in helicopter inclinator thin-wall bearing detecting device Download PDFInfo
- Publication number
- CN201251508Y CN201251508Y CNU2008201489104U CN200820148910U CN201251508Y CN 201251508 Y CN201251508 Y CN 201251508Y CN U2008201489104 U CNU2008201489104 U CN U2008201489104U CN 200820148910 U CN200820148910 U CN 200820148910U CN 201251508 Y CN201251508 Y CN 201251508Y
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- Prior art keywords
- bearing
- ring
- outer ring
- main shaft
- test
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- Expired - Fee Related
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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The utility model belongs to the bearing detecting technique and provides a cantilever supporting mechanism in helicopter inclinator thin-wall bearing detecting device, which is used to position a tested bearing (9) axially and radially and enables the tested bearing to be located on one end of an output main shaft (12) to form a cantilever structure, a bearing jacket (10) of the cantilever structure is connected with a rotary connection flange plate (11) to enable the rotary connection flange plate (11) to be connected with one end of the output main shaft (12), a bearing outer ring and the bearing jacket (10) form interference fit, an inner ring of the tested bearing and a bearing block (7) form interference fit to form a structure that the inner ring of the tested bearing is fixed and the bearing outer ring is rotated along the main shaft, the arranged flange plate (6) is connected with the bearing block (7) and is used to position the inner ring of the tested bearing axially through a ring-shaped step of the flange plate(6) which is convex outwards and a ring-shaped step of the bearing block (7) which is convex outwards, and the outer ring of the tested bearing is axially positioned through a frock gland cover (8) connected with one side of the bearing jacket (10) and the ring-shaped step of the bearing jacket (10) which is convex inwards.
Description
Technical field
The utility model belongs to the bearing detection technique, mainly proposes the cantilever support mechanism in a kind of helicopter inclinator thin-wall bearing pick-up unit.
Background technology
Auto-bank unit is a chief component of helicopter control system, and total square of rotor and the operation of the displacement in cycle all will realize by it.Auto-bank unit is generally by the rotation (outward) of similar bearing ring with do not rotate (interior) ring and form, it is enclosed within on the rotor shaft by universal joint or ball pivot, swivel eye does not link to each other with collective-pitch lever with jociey stick in the driving cabin by control operating rod, and swivel eye links to each other with blade by pitch-change-link.Test bearing is installed under the auto-bank unit between the swivel eye and slide cartridge, plays location and supporting role, and bears radial load and axial load, moment of torsion.When auto-bank unit did not have inclination, each sheet blade pitch when rotated kept constant; When it is handled when tilting, every blade periodic variation pitch in rotation then.Pitch-change-link go to inclinator when upper pitch strengthen, blade is upwards waved; Go to that pitch reduces when the next, blade is waved downwards.So just form the inclination of rotor disc, make rotor make a concerted effort to tilt, produce a horizontal component.The front and back of helicopter and the sporting flying of left and right directions realize by this manipulation, are called cyclic pitch control.Pilot guidance (carry or press) collective-pitch lever makes auto-bank unit slide up or down along rotor shaft is parallel.The pitch of each sheet blade will increase or reduce simultaneously, the lift of rotor is increased or reduces, and helicopter rises thereupon or descends.This manipulation is called total apart from handling.
Helicopter auto-bank unit thin-wall bearing check and analysis method and device are to be used for the new high-tech product that domestic air mail screw propeller, aircraft are diagnosed abnormal information collection, structural health detection, the resultant fault of thin-wall bearing under inspecting state, guarantee or improve the property safe and reliable to operation of bearing.Alternative present manual detection improves the accuracy rate that detects greatly, guarantees the safe application performance of bearing.
And when helicopter auto-bank unit thin-wall bearing is detected, to test bearing axially, radial location and be located at main shaft one end and be cantilever design, and constitute that the test bearing inner ring is fixed, bearing outer ring is with the structure of main axis rotation; On this basis test bearing is applied the moment of torsion of variation and the axial load of big or small alternation is wherein very important part.
Summary of the invention
The purpose of this utility model promptly is the cantilever support mechanism that proposes in a kind of helicopter inclinator thin-wall bearing pick-up unit.
The utility model is finished the technical scheme that its invention task taked: the cantilever support mechanism in a kind of helicopter inclinator thin-wall bearing pick-up unit, described cantilever support mechanism is used for test bearing axial, radial location also is located at output main shaft one end and is cantilever design, the bearing outside that is had connects with the rotation mounting flange and makes the rotation mounting flange be connected in output main shaft one end, bearing outer ring and bearing outside interference fit, test bearing inner ring and bearing seat interference fit constitute the test bearing inner ring and fix, bearing outer ring is with the structure of main axis rotation; The ring flange that is provided with connects with bearing seat and the ring-shaped step of the ring-shaped step that outwards protrudes by ring flange and the outside protrusion of bearing seat to test bearing inner ring axial location; Frock gland by being connected in bearing outside one side and bearing outside to projecting inward ring-shaped step to test bearing outer ring axial location.
The utility model cantilever support mechanism can be suspended on trial body on the transmission main shaft of drive system; The main effect of helicopter auto-bank unit thin-wall bearing is exactly by bearing load and couple, thus the traffic direction of control screw propeller; By bearing outside, rotation mounting flange the test bearing outer ring is connected in the end that drive system is exported main shaft with thin-wall bearing outer ring interference fit, with bearing inner race and bearing seat interference fit and by bearing seat and ring flange to its axial location, constitute the test detection mode of the motionless and bearing outer ring of bearing inner race, and make the rotational speed of bearing outer ring consistent with the real-world operation operating mode of test bearing with the transmission main shaft high speed rotating; The effect of outer ring rotation makes whole shaft strength even, has effectively simulated the operating condition of screw propeller; The suffered axial load of test bearing is mainly by the ring flange transmission, thereby ring flange connects with bearing seat and transmit the suffered axial load and the torque of variation by the annular boss of ring flange outer end is pressed to touch on the end face of test bearing inner ring, the inner ring of test bearing loading transfer to whole bearing.Cantilever support mechanism structure design science in the helicopter inclinator thin-wall bearing pick-up unit that the utility model proposed is reasonable.
Description of drawings
Accompanying drawing 1 is the structural representation of the utility model cantilever support mechanism.
Among the figure, 4, oscillating bearing; 5, terminal pad; 6, ring flange; 7, bearing seat; 8, frock gland; 9, test bearing; 10, bearing outside; 11, rotation mounting flange; 12, output main shaft.
Embodiment
In conjunction with the accompanying drawings utility model embodiment is illustrated:
The cantilever support structure that the utility model proposed be used for to test bearing 9 axially, radial location and be located at main shaft one end and be cantilever design, the bearing outside 10 that is had connects with rotation mounting flange 11 and makes rotation mounting flange 11 be connected in output main shaft 12 1 ends, and test bearing outer ring and bearing outside 10 interference fit, test bearing inner ring and bearing seat 7 interference fit formation test bearing inner ring are fixed, bearing outer ring is with the structure of main axis rotation; The test method of taking the bearing outer ring rotary inner ring not rotate can reduce the undesired signal of non-bearing movable, makes whole shaft strength even, has effectively simulated the operating condition of screw propeller; The ring flange 6 that is provided with connects with bearing seat 7 and the ring-shaped steps of the ring-shaped steps that outwards protrude by ring flange 6 and bearing seat 7 outside protrusions to test bearing inner ring axial location; Frock gland 8 by being connected in bearing outside 10 1 sides and bearing outside to projecting inward ring-shaped step to test bearing outer ring axial location.Set oscillating bearing 4 is in order to be connected with the load bar of load maintainer.
Claims (1)
1, cantilever support mechanism in a kind of helicopter inclinator thin-wall bearing pick-up unit, it is characterized in that: described cantilever support mechanism is used for test bearing (9) axial, radial location also is located at output main shaft (12) one ends and is cantilever design, the bearing outside that is had (10) connects with rotation mounting flange (11) and makes rotation mounting flange (11) be connected in output main shaft (12) one ends, bearing outer ring and bearing outside (10) interference fit, test bearing inner ring and bearing seat (7) interference fit constitutes the test bearing inner ring and fixes, bearing outer ring is with the structure of main axis rotation; The ring flange (6) that is provided with connects with bearing seat (7) and the ring-shaped step of the ring-shaped step that outwards protrudes by ring flange (6) and the outside protrusion of bearing seat (7) to test bearing inner ring axial location; Frock gland (8) by being connected in bearing outside (10) one sides and bearing outside (10) to projecting inward ring-shaped step to test bearing outer ring axial location.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201489104U CN201251508Y (en) | 2008-09-01 | 2008-09-01 | Cantilever supporting mechanism in helicopter inclinator thin-wall bearing detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201489104U CN201251508Y (en) | 2008-09-01 | 2008-09-01 | Cantilever supporting mechanism in helicopter inclinator thin-wall bearing detecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201251508Y true CN201251508Y (en) | 2009-06-03 |
Family
ID=40747180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201489104U Expired - Fee Related CN201251508Y (en) | 2008-09-01 | 2008-09-01 | Cantilever supporting mechanism in helicopter inclinator thin-wall bearing detecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201251508Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104198188A (en) * | 2014-09-24 | 2014-12-10 | 中航工业哈尔滨轴承有限公司 | Roller bearing simulation test positioning device |
| CN108051204A (en) * | 2017-11-29 | 2018-05-18 | 中国科学院西安光学精密机械研究所 | A kind of vacuum running-in test device of Portable solid lubrication bearing |
-
2008
- 2008-09-01 CN CNU2008201489104U patent/CN201251508Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104198188A (en) * | 2014-09-24 | 2014-12-10 | 中航工业哈尔滨轴承有限公司 | Roller bearing simulation test positioning device |
| CN108051204A (en) * | 2017-11-29 | 2018-05-18 | 中国科学院西安光学精密机械研究所 | A kind of vacuum running-in test device of Portable solid lubrication bearing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090603 Termination date: 20120901 |