CN102886637B - Overhauling method for foreign speed reducer of helicopter - Google Patents
Overhauling method for foreign speed reducer of helicopter Download PDFInfo
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- CN102886637B CN102886637B CN201210410256.0A CN201210410256A CN102886637B CN 102886637 B CN102886637 B CN 102886637B CN 201210410256 A CN201210410256 A CN 201210410256A CN 102886637 B CN102886637 B CN 102886637B
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Abstract
The invention relates to an overhauling method for a foreign speed reducer of a helicopter. By formulating an overhauling outline, a complete and clear method which is beneficial to the domestic overhauling of the foreign speed reducer is innovated to achieve the effects of short overhauling cycle and low overhauling cost, and timely guarantee the flight mission of a domestic helicopter. According to the overhauling method, the defects of long cycle, high cost and the like caused by returning the foreign speed reducer of the helicopter to an original factory for overhauling are avoided. By using the overhauling method, the overhauling cycle of the foreign speed reducer of the helicopter is shortened, the overhauling cost is reduced, the strategic limitation is reduced, and the flight mission of the domestic helicopter is well guaranteed.
Description
Technical field
The present invention relates to a kind of decelerator overhauls method, especially a kind of external helicopter reducer overhauls method.
Background technology
Domestic helicopter reducer defines the method that overhaul accordingly, the foreign countries of domestic application in design and manufacture process
Helicopter reducer hinders for some reason or during to lifetime, the process due to not experiencing design and manufacture, therefore without complete clear
The method overhauled at home of external decelerator and cannot be overhauled at home, generally need the outer genuine of repatriation to be overhauled, Jing
Go through that the cycle is longer, overhaul somewhat expensive, severely impacted the aerial mission of domestic helicopter, therefore external helicopter reducer
The form overhauled at home is extremely urgent.
The content of the invention
It is an object of the invention to determine the method for overhauling of external helicopter reducer, realize that external decelerator is turned at home
Repair, shorten overhaul period, save expense, and meet use requirement.
The technical scheme is that：Development and knowhow according to Helicopter Transmission System, with reference to domestic decelerator,
External decelerator and each modular construction and performance are carried out on the basis of labor, outline is overhauled in formulation, including is determined lossless
Detection project and abrasion standard, damage component restorative procedure, parts service life and acceptance trial method etc.；And according to following original
Then overhauled：There are the parts of enough residual lifes, on inspection state is intact can be continuing with；Domestic bearing is all more
Renew product, imported bearing being continuing with by regulation passed examination within phase entire life checks underproof replacing；Abrasion
It is recoverable to carry out plating beyond the parts of allowed band, to recover its good state, it is impossible to the parts report of reparation
It is useless, changed with the new product of production domesticization part；The parts that inspection has crackle are scrapped, and consider last detector to be worth doing to magnetic and check
To determine whether to be continuing with or change, all of expendable part is all scrapped, with the new product of correspondence production domesticization expendable part
Change.
The step of overhauling of the present invention includes：Decomposition record is carried out to decelerator, visual examination is carried out after cleaning, according to overhauling
Principle go-on-go goes out expendable part and is scrapped with the bearing scrapped；Whether nondestructive flaw detection examination has crackle is carried out to parts, is carried out
Differential measurement checks wear extent, and the last detector inspection of magnetic bits determines whether to be changed；Failure part and wear-out part are repaiied
Reason, qualified parts are reused after repairing, underproof or scrapping of cannot repairing；All of discard is changed into domestic
Part carries out assembling test run, and last whole machine is sprayed and outside oil sealing.Specifically include following steps：
1. outline is overhauled in establishment：Development and knowhow according to Helicopter Transmission System, with reference to domestic decelerator, to state
Outer decelerator and each modular construction and performance carry out labor, and outline is overhauled in establishment, including determines Non-Destructive Testing project and mill
Damage standard, damage component restorative procedure, parts service life and acceptance trial method；
2. decompose：Decelerator is decomposed, record carries out the adjustment mat thickness of match grinding in catabolic process, for separate unit
Parts of the quantity more than 1, record the concrete assembling position of each part, and carry out rigging position mark to part；
3. clean：After the completion of disintegration, by all expendable parts and domestic bearing and the import of phase entire life is used more than
Bearing is scrapped, and to decelerator, remaining parts is cleaned；
4. visual examination：Visual examination parts visible surface, the scope of examination for whether have draw damage, deform, changing colour, it is rotten
Erosion, overcoat and matrix are peeled off and worn and torn, for the parts that visual examination has above-mentioned phenomenon are marked, the inspection to bearing
Also include rotating motility inspection, when rotation has significantly unsmooth or gap substantially excessive, the bearing should be scrapped, pair can divide
The roller bearing of solution should visually inspect raceway and rolling element whether there is abrasion and destroys and record；
5. overcoat is removed：Component surface overcoat to carrying in decelerator removes clean；
6. nondestructive inspection：Carrying parts in clean decelerator are removed to surface protecting layer carries out nondestructive inspection (NDI), checks
Project, for the undecomposable part that can not carry out overall nondestructive inspection (NDI), to force area toposcopy is carried out whether to have crackle,
Find that the parts of crackle are scrapped in checking process, N/R parts re-start surfacecti proteon process；
7. differential measurement：Parts to producing abrasion at work enter by the abrasion standard be given in outline is overhauled
Row functional dimension differential measurement, parts measurement result is directly used in the range of abrasion standard regulation, beyond abrasion standard
Parts be marked；
8. repair：Parts of the have damage during visual examination and differential measurement result beyond abrasion standard are repaiied
Reason, reaches after repairing and overhauls the standby of outline requirement, cannot still meet after repairing and overhaul outline requirement or cannot repairing zero
Component exhaustion；
9. the last detector inspection of magnetic bits：Consider last detector to be worth doing to magnetic to check, it is without exception, it is continuing with；There is exception,
Scrap；
10. assemble：Parts are completed to check and ressembled after repairing, and are reported in the aforementioned inspection for carrying out and repair procedures
Useless parts, all change domestic part, need match grinding adjustment mat thickness in assembling process, its thickness should with catabolic process in
The former platform adjusting pad consistency of thickness of record；
11. factory tests：Decelerator to assembling is broken seal, oiling, break-in, continuous power state operating, work
State operates and takeoff condition field investigation, and lubricating oil pressure, oil temperature, casing temperature are monitored in process of the test, supervises
Control has exception then to need to stop, and finds failure cause and excludes follow-up continuous test run, and decomposition inspection is carried out to decelerator after off-test
Look into, check without exception or when only needing to change sealing member, test run of directly testing after can assembling has and abnormal then decelerator entered
Row analysis, searches reason, discharges and assembled after exception, re-starts factory test until checking without exception after test run；
12. check tests：Test run of testing is required according to outline is overhauled, to lubricating oil pressure, lubricating oil temperature in commissioning process
Degree, casing temperature are monitored, monitoring have it is abnormal then need to stop, find failure cause and exclude follow-up continuous test run, test run without
Lubricating oil is released after exception, decelerator inside oil sealing is completed；
13. whole machine sprayings and outside oil sealing：Decelerator after acceptance trial carries out whole machine spraying, and parts original enamelled coating is broken
1～2 layer of priming paint of position coating for damaging and not spraying again before assembly, to whole decelerator 1 aspect paint, subtracting after spraying are sprayed
Fast device carries out outside oil sealing packaging, after oil sealing is qualified, is delivered for use.
Repairing as described in step 8, for producing the parts damaged are drawn, and carry out cleaning depending on damage field raised, round and smooth
Substitute mode places under repair, and cannot not reach in the manner described above when requiring, can carry out repairing sizes；For zero of generation corrosion
Part, should take chemically or mechanically method to be removed depending on corrosion region and corrosion degree, and corresponding surfacecti proteon is carried out after removal
Process；The parts larger for dimension wears, are repaired using chromium plating or by the way of taking with picture accessory.
The present invention combines experience of the domestic helicopter reducer in design and manufacture process, creates a kind of complete, clear
The clear method for being conducive to external decelerator to be overhauled at home, reaches that overhaul period is shorter, the effect that to overhaul expense relatively low, and
When ensure the aerial mission of domestic helicopter.The present invention avoids external helicopter reducer factory of reverting from overhauling and the caused cycle
Length, somewhat expensive etc., shorten the overhaul period of external helicopter reducer, overhaul expense reduction using the present invention, reduce
Strategy is limited, and better ensures that the aerial mission of domestic helicopter.
Specific embodiment
External helicopter reducer overhauls method, and its step is：
1. outline is overhauled in establishment：Development and knowhow according to Helicopter Transmission System, with reference to domestic decelerator, to state
Outer decelerator and each modular construction and performance carry out labor, and outline is overhauled in establishment, including determines Non-Destructive Testing project and mill
Damage standard, damage component restorative procedure, parts service life and acceptance trial method；
2. decompose：Decelerator is decomposed, record carries out the adjustment mat thickness of match grinding in catabolic process, for separate unit
Parts of the quantity more than 1, record the concrete assembling position of each part, and carry out rigging position mark to part；
3. clean：After the completion of disintegration, by all expendable parts and domestic bearing and the import of phase entire life is used more than
Bearing is scrapped, and to decelerator, remaining parts is cleaned；
4. visual examination：Visual examination parts visible surface, the scope of examination for whether have draw damage, deform, changing colour, it is rotten
Erosion, overcoat and matrix are peeled off and worn and torn, for the parts that visual examination has above-mentioned phenomenon are marked, the inspection to bearing
Also include rotating motility inspection, when rotation has significantly unsmooth or gap substantially excessive, the bearing should be scrapped, pair can divide
The roller bearing of solution should visually inspect raceway and rolling element whether there is abrasion and destroys and record；
5. overcoat is removed：Component surface overcoat to carrying in decelerator removes clean；
6. nondestructive inspection：Carrying parts in clean decelerator are removed to surface protecting layer carries out nondestructive inspection (NDI), checks
Project, for the undecomposable part that can not carry out overall nondestructive inspection (NDI), to force area toposcopy is carried out whether to have crackle,
Find that the parts of crackle are scrapped in checking process, N/R parts re-start surfacecti proteon process；
7. differential measurement：Parts to producing abrasion at work enter by the abrasion standard be given in outline is overhauled
Row functional dimension differential measurement, parts measurement result is directly used in the range of abrasion standard regulation；Beyond abrasion standard
Parts be marked；
8. repair：Parts of the have damage during visual examination and differential measurement result beyond abrasion standard are repaiied
Reason, reaches after repairing and overhauls the standby of outline requirement, cannot still meet after repairing and overhaul outline requirement or cannot repairing zero
Component exhaustion；
9. the last detector inspection of magnetic bits：Consider last detector to be worth doing to magnetic to check, it is without exception, it is continuing with；There is exception,
Scrap；
10. assemble：Parts are completed to check and ressembled after repairing, and are reported in the aforementioned inspection for carrying out and repair procedures
Useless parts, all change domestic part, need match grinding adjustment mat thickness in assembling process, its thickness should with catabolic process in
The former platform adjusting pad consistency of thickness of record；
11. factory tests：Decelerator to assembling is broken seal, oiling, break-in, continuous power state operating, work
State operates and takeoff condition field investigation, and lubricating oil pressure, oil temperature, casing temperature are monitored in process of the test, supervises
Control has exception then to need to stop, and finds failure cause and excludes follow-up continuous test run, and decomposition inspection is carried out to decelerator after off-test
Look into, check without exception or when only needing to change sealing member, test run of directly testing after can assembling has and abnormal then decelerator entered
Row analysis, searches reason, discharges and assembled after exception, re-starts factory test until checking without exception after test run；
12. check tests：Test run of testing is required according to outline is overhauled, to lubricating oil pressure, lubricating oil temperature in commissioning process
Degree, casing temperature are monitored, monitoring have it is abnormal then need to stop, find failure cause and exclude follow-up continuous test run, test run without
Lubricating oil is released after exception, decelerator inside oil sealing is completed；
13. whole machine sprayings and outside oil sealing：Decelerator after acceptance trial carries out whole machine spraying, and parts original enamelled coating is broken
1～2 layer of priming paint of position coating for damaging and not spraying again before assembly, to whole decelerator 1 aspect paint, subtracting after spraying are sprayed
Fast device carries out outside oil sealing packaging, after oil sealing is qualified, is delivered for use.
Repairing as described in step 8, for producing the parts damaged are drawn, and carry out cleaning depending on damage field raised, round and smooth
Substitute mode places under repair, and cannot not reach in the manner described above when requiring, can carry out repairing sizes；For zero of generation corrosion
Part, should take chemically or mechanically method to be removed depending on corrosion region and corrosion degree, and corresponding surfacecti proteon is carried out after removal
Process；The parts larger for dimension wears, are repaired using chromium plating or by the way of taking with picture accessory.
Claims (2)
1. a kind of external helicopter reducer overhauls method, it is characterized in that, described method is comprised the following steps：
(1) outline is overhauled in establishment：Development and knowhow according to Helicopter Transmission System, with reference to domestic decelerator, to foreign countries
Decelerator and each modular construction and performance carry out labor, and outline is overhauled in establishment, including determines Non-Destructive Testing project and abrasion
Standard, damage component restorative procedure, parts service life and acceptance trial method；
(2) decompose：Decelerator is decomposed, record carries out the adjustment mat thickness of match grinding in catabolic process, for separate unit number
Parts of the amount more than 1, record the concrete assembling position of each part, and carry out rigging position mark to part；
(3) clean：After the completion of disintegration, by all expendable parts and domestic bearing and the imported bearing of phase entire life is used more than
Scrap, to decelerator, remaining parts is cleaned；
(4) visual examination：Visual examination parts visible surface, the scope of examination for whether have draw damage, deform, changing colour, burn into
Overcoat and matrix are peeled off and worn and torn, for the parts that visual examination has above-mentioned phenomenon are marked, to the inspection of bearing also
Including motility inspection is rotated, when rotation has significantly unsmooth or gap substantially excessive, the bearing is scrapped, to decomposable
Roller bearing should visually inspect raceway and rolling element whether there is abrasion and destroys and record；
(5) overcoat is removed：Remove totally to carrying component surface overcoat in decelerator；
(6) nondestructive inspection：Carrying parts in clean decelerator are removed to surface protecting layer carries out nondestructive inspection (NDI), inspection project
Whether to have crackle, for the undecomposable part that can not carry out overall nondestructive inspection (NDI), toposcopy is carried out to force area, checked
During find crackle parts scrap, N/R parts re-start surfacecti proteon process；
(7) differential measurement：Parts to producing abrasion at work are carried out by the abrasion standard be given in outline is overhauled
Functional dimension differential measurement, parts measurement result is directly used in the range of abrasion standard regulation, beyond abrasion standard
Parts are marked；
(8) repair：Parts of the have damage during visual examination and differential measurement result beyond abrasion standard are placed under repair, is repaiied
Reach after reason and overhaul the standby of outline requirement, cannot still meet after repairing and overhaul parts report that is outline requirement or cannot repairing
It is useless；(9) the last detector inspection of magnetic bits：Consider last detector to be worth doing to magnetic to check, it is without exception, it is continuing with；There is exception, report
It is useless；
(10) assemble：Parts are completed to check and ressembled after repairing, and are scrapped in the aforementioned inspection for carrying out and in repair procedures
Parts, all change domestic part, need match grinding adjustment mat thickness in assembling process, its thickness should with catabolic process in remember
The former platform adjusting pad consistency of thickness of record；
(11) factory test：Decelerator to assembling is broken seal, oiling, break-in, continuous power state operating, working condition
Operating and takeoff condition field investigation, are monitored in process of the test to lubricating oil pressure, oil temperature, casing temperature, and monitoring has
It is abnormal then need stop, find failure cause and exclude follow-up continuous test run, overhaul is carried out to decelerator after off-test, examine
Look into without exception or when only needing to change sealing member, test run of directly testing after can assembling has abnormal then carry out to decelerator point
Analysis, searches reason, discharges and assembled after exception, re-starts factory test until checking without exception after test run；
(12) check test：Require to test test run according to outline is overhauled, in commissioning process to lubricating oil pressure, oil temperature,
Casing temperature is monitored, and monitoring has exception then to need to stop, and finds failure cause and excludes follow-up continuous test run, and test run is without exception
After release lubricating oil, complete decelerator inside oil sealing；
(13) whole machine spraying and outside oil sealing：Decelerator after acceptance trial carries out whole machine spraying, damaged to parts original enamelled coating
And 1～2 layer of priming paint of the position coating not sprayed again before assembly, 1 aspect paint, the deceleration after spraying are sprayed to whole decelerator
Device carries out outside oil sealing packaging, after oil sealing is qualified, is delivered for use.
2. as claimed in claim 1 foreign countries' helicopter reducer overhauls method, it is characterized in that, the repairing of the step (8),
The parts damaged are drawn for producing, raised, the round and smooth substitute mode of cleaning is carried out depending on damage field and is placed under repair, in the manner described above
It is unable to reach when requiring, repairing sizes can be carried out；For the parts for producing corrosion, should take depending on corrosion region and corrosion degree
Chemically or mechanically method is removed, and corresponding surfacecti proteon process is carried out after removal；The parts larger for dimension wears,
Repaired using chromium plating or by the way of taking with picture accessory.
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| CN201210410256.0A CN102886637B (en) | 2012-10-24 | 2012-10-24 | Overhauling method for foreign speed reducer of helicopter |
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| CN201210410256.0A CN102886637B (en) | 2012-10-24 | 2012-10-24 | Overhauling method for foreign speed reducer of helicopter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109014767A (en) * | 2018-07-20 | 2018-12-18 | 中国航发哈尔滨东安发动机有限公司 | A kind of repair method that the boss surfaces of helicopter connecting shaft scratch |
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| CN105840978A (en) * | 2016-03-21 | 2016-08-10 | 哈尔滨东安发动机（集团）有限公司 | Positioning method for main oil cavity high-pressure failure cause of helicopter main reducing gear |
| CN105896933B (en) * | 2016-04-08 | 2018-12-04 | 上海海鹰机械厂 | Single-phase static current transformer repair method |
| CN109894459A (en) * | 2019-04-16 | 2019-06-18 | 山东宜修汽车传动工程技术有限公司 | Old master subtracts assembly and remanufactures production method |
| CN112705905B (en) * | 2021-01-08 | 2022-11-18 | 成都国营锦江机器厂 | Method for repairing BP-14 main reducer driven spiral bevel gear assembly |
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