CN109093319A - The repair method that Helicopter Main Reducer casing swivel nut loosens - Google Patents
The repair method that Helicopter Main Reducer casing swivel nut loosens Download PDFInfo
- Publication number
- CN109093319A CN109093319A CN201810810305.7A CN201810810305A CN109093319A CN 109093319 A CN109093319 A CN 109093319A CN 201810810305 A CN201810810305 A CN 201810810305A CN 109093319 A CN109093319 A CN 109093319A
- Authority
- CN
- China
- Prior art keywords
- swivel nut
- sawtooth
- casing
- dead ring
- processing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P6/00—Restoring or reconditioning objects
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P2700/00—Indexing scheme relating to the articles being treated, e.g. manufactured, repaired, assembled, connected or other operations covered in the subgroups
- B23P2700/01—Aircraft parts
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gear Transmission (AREA)
Abstract
The present invention relates to the repair methods that a kind of Helicopter Main Reducer casing swivel nut loosens, the position loosened according to swivel nut on casing, supplementary processing is carried out to casing, and according to casing thread size, process corresponding swivel nut and sawtooth dead ring, in the case where not changing connection size, the former matching relationship of swivel nut Yu sawtooth dead ring ensure that, continued connection and fastening function.The present invention not only intact can repair swivel nut and screw, the fastening function that sawtooth fastens, guarantee main reducing gear using safe, and the product repair cycle can be shortened, reduce the cost of repairs.
Description
Technical field
The present invention relates to the repair methods that a kind of Helicopter Main Reducer casing swivel nut loosens.
Background technique
Swivel nut is a kind of common fastener, is widely applied in Helicopter Main Reducer casing, by internal and external screw thread group
At it is as shown in Figure 1 that swivel nut is assembled to the effect on casing.This kind of swivel nut is usually matched with sawtooth dead ring, common to play connection
It connects and fastening effect, swivel nut is as shown in Fig. 2, sawtooth dead ring is as shown in Figure 3.When main reducing gear works, by helicopter vibration
It influences, with the increase of working time, swivel nut easily occurs loosening situation on casing.After swivel nut loosens, it will be unable to continue connection
Fastening effect, and then will affect the safety in utilization of main reducing gear.Because there is no reliable repair method and test data product early period
It is tired, after swivel nut loosens, usually it is forced main reducing gear casing scrapping processing, this results in largely wasting.
Summary of the invention
It is an object of the invention to propose a kind of swivel nut loosens on Helicopter Main Reducer casing repair method, final energy
The former matching relationship for guaranteeing itself and casing, sawtooth dead ring, guarantee main reducing gear using safe, avoid unnecessary waste.
The technical solution of the present invention is as follows: Helicopter Main Reducer casing swivel nut loosen repair method the following steps are included:
1) confirm the swivel nut loosened on casing, and swivel nut, sawtooth dead ring specification are determined according to design drawing；
2) swivel nut of loosening is taken out from casing, supplementary processing is carried out to casing threaded hole, the principle of supplementary processing is
Original thread is removed, and increases level-one；
3) fluorescent penetrating inspection is carried out to the thread Pilot hole after processing, if flawless, by 4) step progress, otherwise casing is scrapped
Processing；
4) chromic acid salt treatment is carried out to the surface that casing machine added, surface covering should be continuous, uniform and reveal casing matrix；
5) swivel nut and sawtooth dead ring are processed, the swivel nut is processed by requirement in step 6), and sawtooth dead ring is pressed
It requires to be processed in step 7)；
6) thread size B is increased outside level-one except swivel nut, remaining requires identical as former swivel nut；
7) sawtooth dead ring tooth top D and outer diameter D aside from size1It increases outside level-one, remaining is required and former sawtooth dead ring phase
Together；
8) by after processing swivel nut and sawtooth dead ring be installed on casing by pattern requirement, instead of original drawings swivel nut and saw
The installation of tooth dead ring；
9) it checks the sawtooth dead ring after assembly, 0~0.5mm of casing plane should be lower than；
10) it will be recorded in abnormal assembly record sheet according to swivel nut, sawtooth dead ring situation, and be stored in retarder installation shelves
Case；
11) it submits and examines.
Described the 7) after step, can by after processing swivel nut and sawtooth dead ring fasten label and indicate installation site,
It avoids occurring accidentally filling when Product Assembly.
The position that the present invention is loosened according to swivel nut on casing carries out supplementary processing to casing, and according to casing thread size,
Corresponding swivel nut and sawtooth dead ring are processed, in the case where not changing connection size, ensure that swivel nut and sawtooth dead ring
Former matching relationship has continued connection and fastening function.Meanwhile chromic acid salt treatment, work are used to the casing surface of supplementary processing
Process is mature and protective capacities is good, verifies on many types of product.By to after processing swivel nut and sawtooth dead ring fasten mark
Installation site is signed and indicated, can avoid going wrong when Product Assembly.It, not only can intact reparation swivel nut using this kind of repair method
The fastening function fastened with screw, sawtooth, guarantee main reducing gear using safe, and the product repair cycle can be shortened, reduced
The cost of repairs.Such repair method in certain type Helicopter Main Reducer application many years, ask by the well non-feedback quality of state of flight
Topic.Such method extends to all similar casing swivel nuts and loosens in fastening structure.
Detailed description of the invention
Fig. 1 is that screw thread and sawtooth dead ring assemble effect picture；
Fig. 2 is screw bushing structure figure；
Fig. 3 is the A-A of Fig. 2 to enlarged drawing；
Fig. 4 is sawtooth dead ring structure chart figure；
Fig. 5 is the side view of Fig. 4；
Fig. 6 is the partial enlarged view of Fig. 4.
Specific embodiment
As shown, Helicopter Main Reducer casing swivel nut loosen repair method the following steps are included:
1) confirm the swivel nut loosened on casing, and swivel nut, sawtooth dead ring specification are determined according to design drawing；
2) swivel nut of loosening is taken out from casing, supplementary processing is carried out to casing threaded hole, the principle of supplementary processing is
Original thread is removed, and increases level-one；
3) fluorescent penetrating inspection is carried out to the thread Pilot hole after processing, if flawless, by 4) step progress, otherwise casing is scrapped
Processing；
4) chromic acid salt treatment is carried out to the surface that casing machine added, surface covering should be continuous, uniform and reveal casing matrix；
5) swivel nut and sawtooth dead ring are processed, the swivel nut is processed by requirement in step 6), and sawtooth dead ring is pressed
It requires to be processed in step 7)；
6) thread size B is increased outside level-one except swivel nut, remaining requires identical as former swivel nut；
7) sawtooth dead ring tooth top D and outer diameter D aside from size1It increases outside level-one, remaining is required and former sawtooth dead ring phase
Together；
8) by after processing swivel nut and sawtooth dead ring be installed on casing by pattern requirement, instead of original drawings swivel nut and saw
The installation of tooth dead ring；
9) it checks the sawtooth dead ring after assembly, 0~0.5mm of casing plane should be lower than；
10) it will be recorded in abnormal assembly record sheet according to swivel nut, sawtooth dead ring situation, and be stored in retarder installation shelves
Case；
11) it submits and examines.
Described the 7) after step, by after processing swivel nut and sawtooth dead ring fasten label and indicate installation site, avoid
Occur accidentally filling when Product Assembly.
Embodiment
When overhauling, swivel nut loosens the main reducing gear that certain type helicopter number is 001 at discovery rear housing brake position 1,
Its troubleshooting procedure are as follows:
1) it is main reducing gear and brake disc connecting portion that swivel nut, which loosens position, and swivel nut 1B952509-100ADL and sawtooth are tight
Gu ring 1B52511-160ADL is matched；
2) swivel nut will be loosened to take out from casing, and original machine casket threaded hole will be expanded to M16 × 1.5-6H by M14 × 2-6H, ream
0 depth 4.4mm of hole 16.1+0.08；
3) fluorescent penetrating inspection, flawless are carried out to thread Pilot hole；
4) surface is added to carry out chromic acid salt treatment in casing machine, surface covering is continuous, uniformly and does not reveal casing matrix；
5) according to 1 swivel nut 1B952509X-100ADL is matched, in addition to B value (external screw thread) is changed to M16 × 1.5-6g, remaining is wanted
Seek common ground 1B952509-100ADL；
6) according to 1 sawtooth dead ring 1B52511X-160ADL is matched, except D value (outer tooth top) is changed to Ф 17 0-0.07, D1
Value (outer diameter) is changed to outside 16 0-0.11 of Ф, remaining requires same 1B52511-160ADL；
7) fastening label according to the swivel nut and sawtooth dead ring matched and indicate " is that the cooperation of 001 main reducing gear rear housing makes with number
With "；
8) matched according to the swivel nut matched and sawtooth dead ring, the 1B952509-100ADL that is required instead of pattern and
1B52511-160ADL installation；
9) the sawtooth dead ring after assembling is lower than casing plane 0.3mm；
10) it will be recorded in abnormal assembly record sheet according to swivel nut, sawtooth dead ring situation, and be stored in 001 main deceleration
Device is installed in archives；
11) it submits and examines.
Claims (2)
1. the repair method that a kind of Helicopter Main Reducer casing swivel nut loosens, which is characterized in that the method includes following
Step:
1) confirm the swivel nut loosened on casing, and swivel nut, sawtooth dead ring specification are determined according to design drawing；
2) swivel nut of loosening is taken out from casing, supplementary processing is carried out to casing threaded hole, the principle of supplementary processing is removal
Original thread, and increase level-one；
3) fluorescent penetrating inspection is carried out to the thread Pilot hole after processing, if flawless, by 4) step progress, otherwise casing scraps place
Reason；
4) chromic acid salt treatment is carried out to the surface that casing machine added, surface covering should be continuous, uniform and reveal casing matrix；
5) swivel nut and sawtooth dead ring are processed, the swivel nut is processed by requirement in step 6), and sawtooth dead ring presses step
7) it requires to be processed in；
6) thread size B is increased outside level-one except swivel nut, remaining requires identical as former swivel nut；
7) sawtooth dead ring tooth top D and outer diameter D aside from size1It increases outside level-one, remaining requires identical as former sawtooth dead ring；
8) by after processing swivel nut and sawtooth dead ring be installed on casing by pattern requirement, it is tight instead of original drawings swivel nut and sawtooth
Gu ring is installed；
9) it checks the sawtooth dead ring after assembly, 0~0.5mm of casing plane should be lower than；
10) it will be recorded in abnormal assembly record sheet according to swivel nut, sawtooth dead ring situation, and be stored in retarder installation archives；
11) it submits and examines.
2. the repair method that Helicopter Main Reducer casing swivel nut as described in claim 1 loosens, which is characterized in that described
The 7) after step, by after processing swivel nut and sawtooth dead ring fasten label and indicate installation site, appearance when avoiding Product Assembly
Accidentally fill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810810305.7A CN109093319A (en) | 2018-07-20 | 2018-07-20 | The repair method that Helicopter Main Reducer casing swivel nut loosens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810810305.7A CN109093319A (en) | 2018-07-20 | 2018-07-20 | The repair method that Helicopter Main Reducer casing swivel nut loosens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109093319A true CN109093319A (en) | 2018-12-28 |
Family
ID=64847202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810810305.7A Pending CN109093319A (en) | 2018-07-20 | 2018-07-20 | The repair method that Helicopter Main Reducer casing swivel nut loosens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109093319A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2638667A1 (en) * | 1988-11-08 | 1990-05-11 | Barras Provence | Portable machine tool for machining screw threads extending to the internal periphery of a cylindrical hole |
| CN1911590A (en) * | 2006-08-31 | 2007-02-14 | 中国南车集团戚墅堰机车车辆厂 | Fast repairing method of internal screw |
| CN102909519A (en) * | 2012-11-21 | 2013-02-06 | 南车戚墅堰机车有限公司 | Repair method of bolt hole of machine body cylinder |
| CN105537849A (en) * | 2015-12-29 | 2016-05-04 | 中车洛阳机车有限公司 | Method for restoring threaded hole of locomotive axle box pull rod seat |
| CN105757095A (en) * | 2016-03-21 | 2016-07-13 | 哈尔滨东安发动机（集团）有限公司 | Self-locking thread sleeve device |
-
2018
- 2018-07-20 CN CN201810810305.7A patent/CN109093319A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2638667A1 (en) * | 1988-11-08 | 1990-05-11 | Barras Provence | Portable machine tool for machining screw threads extending to the internal periphery of a cylindrical hole |
| CN1911590A (en) * | 2006-08-31 | 2007-02-14 | 中国南车集团戚墅堰机车车辆厂 | Fast repairing method of internal screw |
| CN102909519A (en) * | 2012-11-21 | 2013-02-06 | 南车戚墅堰机车有限公司 | Repair method of bolt hole of machine body cylinder |
| CN105537849A (en) * | 2015-12-29 | 2016-05-04 | 中车洛阳机车有限公司 | Method for restoring threaded hole of locomotive axle box pull rod seat |
| CN105757095A (en) * | 2016-03-21 | 2016-07-13 | 哈尔滨东安发动机（集团）有限公司 | Self-locking thread sleeve device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109093319A (en) | The repair method that Helicopter Main Reducer casing swivel nut loosens | |
| CN106424391A (en) | Automatic riveting pressure monitoring device | |
| CN202240419U (en) | Synchronous bolt tightening device | |
| CN110884299A (en) | Automobile wheel hub nut dismounting device | |
| CN202527921U (en) | Tightening device for gear clamp nut | |
| CN212683782U (en) | Disassembling tool | |
| CN102390083B (en) | Novel part assembly and method for stretching main steel bar in producing prestressed pipe pile | |
| CN107896035A (en) | The installing/dismounting special machine and its operating method of motor rotor component | |
| CN212430049U (en) | Water pipe joint for central air conditioner | |
| CN101439334B (en) | Method for replacing guide blade of high-efficient powder sorter | |
| CN201291439Y (en) | Special purpose tool for disassembling diesel engine crank pulley | |
| CN208764085U (en) | A kind of high-strength loosing prevention bolt | |
| CN207868953U (en) | The installing and dismounting special machine of motor rotor component | |
| CN2890477Y (en) | Multipoint-pretension easily-dismountable wheel hub device | |
| CN206913071U (en) | A kind of stud tightens anti-rotation tool | |
| CN201389846Y (en) | Platform for repairing bolt and nut | |
| CN209175680U (en) | It appears withdrawing device for broken threaded parts | |
| CN207139647U (en) | A kind of restricted clearance bolt folding instrument | |
| CN110497358A (en) | The extracting tool and application method of a kind of screw on curved surface, nut | |
| CN218052399U (en) | Disassembling tool for main transmission brake disc of cigarette making machine | |
| CN219212984U (en) | Dismounting device for airplane wheel bearing oil seal | |
| CN204195175U (en) | A kind of steering box processing blind nut riveter point apparatus | |
| CN202622093U (en) | Motorcycle steering column vertical pipe thread repair tooling | |
| CN216361022U (en) | Valve rod limiting device of high-pressure regulating valve of steam turbine | |
| CN215980381U (en) | Difficult not hard up heavy machinery link joint bolt |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181228 |