CN111703586B - Replacement method of reverse-pushing C duct sliding rail structure of V2500 engine - Google Patents
Replacement method of reverse-pushing C duct sliding rail structure of V2500 engine Download PDFInfo
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- CN111703586B CN111703586B CN202010392317.XA CN202010392317A CN111703586B CN 111703586 B CN111703586 B CN 111703586B CN 202010392317 A CN202010392317 A CN 202010392317A CN 111703586 B CN111703586 B CN 111703586B
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- duct
- reverse
- pushing
- rail structure
- frame
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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
- B64F5/40—Maintaining or repairing aircraft
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
Abstract
The invention discloses a replacement method of a reverse-pushing C duct sliding rail structure of a V2500 engine, which comprises the following steps: (S1) obtaining a complete set of digital models of a reverse thrust C duct of a V2500 engine through reverse engineering to obtain the structural size of the reverse thrust C duct; (S2) manufacturing a model frame according to the structural size of the reverse thrust C duct; (S3) carrying out actual verification on the mold frame; (S4) manufacturing a joint arm, wherein the joint arm is arranged below the frame, and a frame positioning guide rail is also arranged below the joint arm; and (S5) positioning the position of the old reverse pushing C duct slide rail structure through the profile frame, the joint arm and the profile frame positioning guide rail, removing the old slide rail structure, installing the new slide rail structure in situ, and finally removing the profile frame, the joint arm and the profile frame positioning guide rail to realize the replacement of the reverse pushing C duct slide rail structure of the V2500 engine. According to the method, through designing the frame, the adjustable joint arm and the frame positioning guide rail, accurate replacement of the reverse pushing C duct slide rail of the V2500 engine can be realized.
Description
Technical Field
The invention belongs to the technical field of aircraft maintenance, and particularly relates to a replacement method of a reverse thrust C duct slide rail structure of a V2500 engine.
Background
Each flight cycle is actuated once by reverse thrust, and each aircraft in service is actuated 4 times on average by 4 flight cycles per day. During landing and running of the aircraft, the thrust reverser structure is subjected to about 70% of the thrust of the aircraft engine and changes the thrust to the opposite direction, thereby rapidly reducing the speed of the aircraft. In the whole actuation process, the thrust reverser structure needs to bear complex high-temperature, high-vibration and high-stress actions. With the increase of the service time, the structure damage of the back-pushing structure is easy to occur, wherein the abrasion of the back-pushing C duct sliding rail is most common.
After the sliding rail is worn, vibration is aggravated when the sliding rail is reversely pushed, efficiency is reduced, the actuating mechanism is blocked under serious conditions, the landing and running gesture of the aircraft is affected, the whole actuating system is possibly invalid due to further development, the non-inclusion of the structural parts is lost, and the immeasurable influence is brought to flight safety.
The C duct slide rail structure is so critical, and the aviation operator is supposed to strengthen slide rail structure inspection and maintenance, but in the actual operation process, because the slide rail structure inspection is close to difficulty, the damage is hidden, and in the early stage of damage occurrence, the slide rail structure is difficult to be timely inspected and found. After the damage is further expanded, the original state and function of the damage can not be recovered through simple maintenance when the damage is inspected for the first time, and the damage needs to be repaired in a complex structure and even can meet the navigable requirements. The damaged sliding rail is high in cost, the sliding rail after replacement can be ensured to be accurate in size by means of a special positioning tool type frame, interference, abrasion and even blocking cannot occur in the sliding rail operation process, the sliding rail is smooth in operation, and secondary damage to the structure is avoided.
Because OEM (manufacturer who designs and makes aeroengine nacelle) technology is blocked, do not sell all engine nacelle frock type frames such as reverse thrust C duct to the outside, when the slide rail appears great damage, must send back former factory repair or change (because of almost monopoly market, quotation is very high), through inquiring the record of repairing of the reverse thrust C duct in recent years of company, analyzed slide rail repair and change proportion and cost, cause high repair expense for the company.
Disclosure of Invention
The invention aims to provide a replacement method of a reverse-pushing C duct slide rail structure of a V2500 engine, which can realize the accurate replacement of the reverse-pushing C duct slide rail structure of the V2500 engine by designing a frame and additionally arranging an adjustable joint arm and a frame positioning guide rail on the frame.
The above object of the present invention can be achieved by the following technical solutions: a replacing method of a reverse-pushing C duct sliding rail structure of a V2500 engine comprises the following steps:
(S1) obtaining a complete set of digital models of a reverse thrust C duct of a V2500 engine through reverse engineering to obtain the structural size of the reverse thrust C duct;
(S2) manufacturing a model frame according to the structural size of the reverse thrust C duct;
(S3) carrying out actual verification on the mold frame;
(S4) manufacturing an articulated arm, wherein the articulated arm is arranged below the frame, and a frame positioning guide rail is also arranged below the articulated arm;
and (S5) positioning the position of the old reverse-pushing C duct slide rail structure through the mold frame, the joint arm and the frame positioning guide rail, removing the old reverse-pushing C duct slide rail structure, installing the new reverse-pushing C duct slide rail structure in situ, and finally removing the mold frame, the joint arm and the mold frame positioning guide rail to realize the replacement of the reverse-pushing C duct slide rail structure of the V2500 engine.
In the replacement method of the reverse thrust C duct slide rail structure of the V2500 engine, the following steps are adopted:
the action track of the upper side slide rail and the lower side slide rail of the back-pushing C culvert should be two absolute parallel lines in theory, and in the manufacturing engineering, the action of the profile frame is to ensure that the slide rails on the two sides are parallel, so that interference, blocking and abrasion are not generated in the action process. Therefore, preferably, in the step (S2), only the digital model obtained through mapping is needed, and a set of mechanism which can ensure that the replacement slide rail (new slide rail structure) and the original slide rail (old slide rail structure) are absolutely parallel, have fixed distance and relative angle and have good rigidity and do not deform and unstably is designed and manufactured in the three-dimensional space.
In the step (S3), the actual verification of the mold frame finds that the data obtained by digital-analog measurement is very accurate after being fitted, the design concept of the mold frame is to fully use the guide groove to position, and the OEM has a tolerance range in the manufacturing process, and the sliding rail structure can generate certain abrasion in the service process. When the bracket is in actual use, because the rigidity is too high and errors are accumulated, the bracket is difficult to be smoothly installed on the C duct to position, and the limitation is high.
The application discovers through the experiment, through technological improvement, for the type frame with joint arm, carries out the location verification in advance, through the back again to new slide rail structure that trades fix a position, through the scale on the joint arm, can perfect localization slide rail position, the tolerance is little, the size is accurate.
Preferably, in step (S3), the articulated arm includes a first connecting seat and a second connecting seat that are hinged to each other, the first connecting seat is disposed on a positioning guide rail of the mold frame, a guide groove is disposed on the mold frame, the second connecting seat is slidably disposed in the guide groove of the mold frame, and a scale is disposed on the guide groove.
Further, the articulated arm further comprises a spindle, and the first connecting seat and the second connecting seat are hinged with each other through the spindle.
Further, the first connecting seat comprises a first connecting body and a sleeve, the first connecting body is fixedly connected with the profile frame positioning guide rail, the second connecting seat comprises a second connecting body and a sliding block, a through hole is formed in the second connecting body, one end of the mandrel penetrates through the through hole and the sleeve and is locked through a first locking piece, and the sliding block is arranged in the guide groove and is locked through a second locking piece.
Further, a gasket is further arranged between the second locking piece and the guide groove.
Preferably, the axial direction of the spindle is perpendicular to the sliding direction of the sliding block in the guide groove.
As a preferred embodiment of the present invention, the first locking member is a wing nut, and the second locking member is a hexagon socket screw.
Preferably, the first connecting body can be fixedly connected with the reverse pushing C duct sliding rail through a screw.
Preferably, in the step (S5), the positions of the new and old reverse pushing C duct slide rail structures are positioned through the graduated scale on the guide groove.
Compared with the prior art, the invention has the following advantages:
(1) The profile frame, the joint arm and the profile frame positioning guide rail are simple in structure, light and convenient to adjust, and compared with the whole set of tooling of an OEM, a large amount of installation and debugging time can be saved, and through repeated use verification, the replaced slide rail is accurate in size, smooth in operation and free of secondary damage;
(2) The technical locking of international OEM manufacturers is broken, the self-design processing of the sliding rail positioning frame is realized, the technical bottleneck restricting the sliding rail replacement work is broken through, and the real V2500 nacelle repairing capability is realized;
(3) Saving considerable outgoing maintenance cost for enterprises.
Drawings
FIG. 1 is a schematic installation view of a medium frame, an articulated arm and a frame positioning rail of example 1, without installing a first locking member, a second locking member and a spacer;
FIG. 2 is a front view of FIG. 1 with first, second and spacer members installed, wherein A is an articulating arm;
FIG. 3 is an enlarged view of A in FIG. 2;
FIG. 4 is a cross-sectional view of FIG. 3A;
wherein the marks in the figures are as follows:
1 is a frame;
11 is a guide groove;
2 is an articulated arm;
21 is a first connecting seat;
211 is a first connection body;
212 is a sleeve;
213 is a first locking member;
214 is a screw;
22 is a second connecting seat;
221 is a second connection body;
222 is a slider;
223 is a through hole;
23 is a mandrel;
and 3, a frame positioning guide rail.
Detailed Description
Example 1
The replacing method of the reverse thrust C duct sliding rail of the V2500 engine provided by the embodiment comprises the following steps:
(S1) obtaining a complete set of digital models of a reverse thrust C duct of a V2500 engine through reverse engineering to obtain key structural dimensions of the reverse thrust C duct;
the C duct is modeled by using Geomagic three-dimensional design software, and a complete set of digital models of the reverse C duct of the V2500 engine is obtained.
(S2) manufacturing a model frame 1 according to the structural size of the reverse thrust C duct;
through analysis, the action track of the upper side sliding rail and the lower side sliding rail of the back-push C duct should be two absolute parallel lines theoretically, and in the manufacturing engineering, the action of the profile frame is to ensure that the sliding rails on the two sides are parallel, so that interference, blocking and abrasion are not generated in the action process. Therefore, according to the structural dimensions obtained by mapping, a set of frames which can ensure that the replacement slide rail (new slide rail structure) and the original slide rail (old slide rail structure) are absolutely parallel, have fixed distance and relative angle and have good rigidity and do not deform and unstably are manufactured, and the CATIA is used for structural design of the frames.
(S3) performing actual verification of the profile 1;
in the actual verification process, the applicant finds that the data obtained by digital-analog measurement are very accurate after being fitted, and the design concept of the mold frame is to fully use the guide groove of the mold frame to position, and the OEM has a tolerance range in the manufacturing process, and the sliding rail structure can generate certain abrasion in the service process. When the bracket is in actual use, because the rigidity is too high and errors are accumulated, the bracket is difficult to be smoothly installed on the C duct to position, and the limitation is high.
The applicant is through technical improvement, adds the articulated arm to the frame, and the location verification is first carried out, through the back again to the slide rail structure that newly trades location, through the scale on the articulated arm, can perfect localization slide rail position, the tolerance is little, the size is accurate.
(S4) manufacturing a joint arm 2, wherein the joint arm 2 is arranged below the joint frame 1, and a frame positioning guide rail 3 is also arranged below the joint arm 2;
as shown in fig. 1 to 4, the articulated arm 2 includes a first connecting seat 21 and a second connecting seat 22 hinged to each other, the first connecting seat 21 is disposed on the frame positioning rail 3, the frame 1 is provided with a guide groove 11, the second connecting seat 22 is slidably disposed in the guide groove 11 of the frame 1, and the guide groove 11 is provided with a scale.
The articulated arm 2 further comprises a spindle 23, the first connection seat 21 and the second connection seat 22 being mutually hinged by means of the spindle 23.
The first connecting seat 21 comprises a first connecting body 211 and a sleeve 212, the first connecting body 211 is fixedly connected with the frame positioning guide rail 3, the second connecting seat 22 comprises a second connecting body 221 and a sliding block 222, a through hole 223 is formed in the second connecting body 221, one end of the mandrel 23 penetrates through the through hole 223 and the sleeve 212 and is locked through a first locking piece 213, and the sliding block 222 is arranged in the guide groove 11 and is locked through a second locking piece.
A gasket is also arranged between the second locking member and the guide groove 11.
The axial direction of the spindle 23 is perpendicular to the sliding direction of the slider 222 in the guide groove 11, and is only preferable, but not limited thereto.
In the present embodiment, the first locking member 213 is a wing nut, and the second locking member is a hexagon socket screw, which is only used for example and not limited thereto.
The first connection body 211 may be fixedly coupled to the frame positioning rail 3 by a screw 214 (herein, by way of example only and not limitation).
And (S5) positioning the position of the old reverse-pushing C culvert sliding rail structure through the profile frame 1, the joint arm 2 and the profile frame positioning guide rail 3, removing the old reverse-pushing C culvert sliding rail structure, installing the new reverse-pushing C culvert sliding rail structure in situ, and finally removing the profile frame 1, the joint arm 2 and the profile frame positioning guide rail 3 to realize the replacement of the reverse-pushing C culvert sliding rail structure of the V2500 engine.
Specifically, through the scale on the guide way 11, the position of new and old thrust reverser C duct slide rail structure is accurately positioned.
When in actual use, the first step is as follows: unscrewing the first locking piece 213 on the joint arm 2, at this time, the mold frame positioning guide rail 3 can freely move in angle and position, and placing the mold frame 1 on the c duct, after the position is adjusted, screwing the first locking piece 213 on the joint arm 2, and fixing the mold frame 1 at this time; and a second step of: removing the old slide rail structure; and a third step of: changing a new sliding rail structure; fourth step: and a new slide rail structure is positioned by adopting the frame 1.
Therefore, the invention is technically improved, the first locking piece 213 on the joint arm 2 is firstly unscrewed, the mould frame positioning guide rail 3 can freely move the angle and the position, the mould frame 1 is placed on the back-pushing c culvert, after the position is adjusted, the first locking piece 213 on the joint arm 2 is screwed, the mould frame 1 is fixed at the moment, the mould frame positioning guide rail 3 is fixed in position, at the moment, the positioning verification is firstly carried out, the old slide rail structure is removed after the old slide rail structure is removed, the new slide rail structure is positioned, the new slide rail structure is installed according to the position of the mould frame positioning guide rail 3 at the fixed position, and the new slide rail structure position can be perfectly positioned through the graduated scale on the joint arm 2, so that the tolerance is small and the size is accurate.
The invention has been described with reference to a few specific embodiments, it being necessary to note that the above specific embodiments are provided for the purpose of further illustration and are not intended to limit the scope of the invention. Some insubstantial modifications and adaptations of the invention by others are within the scope of the invention.
Claims (9)
1. A replacing method of a reverse-pushing C duct sliding rail structure of a V2500 engine is characterized by comprising the following steps:
(S1) obtaining a complete set of digital models of a reverse thrust C duct of a V2500 engine through reverse engineering to obtain the structural size of the reverse thrust C duct;
(S2) manufacturing a profile frame (1) according to the structural size of the reverse-pushing C duct;
(S3) carrying out actual verification on the mold frame (1);
(S4) manufacturing an articulated arm (2), wherein the articulated arm (2) is arranged below the frame (1), and a frame positioning guide rail (3) is also arranged below the articulated arm (2);
s5, positioning the position of the old reverse-pushing C duct slide rail structure through the profile frame (1), the joint arm (2) and the profile frame positioning guide rail (3), then dismantling the old reverse-pushing C duct slide rail structure, installing the new reverse-pushing C duct slide rail structure in situ, and finally removing the profile frame (1), the joint arm (2) and the profile frame positioning guide rail (3) to realize replacement of the reverse-pushing C duct slide rail structure of the V2500 engine;
in step (S4) articulated arm (2) include articulated first connecting seat (21) and second connecting seat (22) each other, first connecting seat (21) set up on frame location guide rail (3), are equipped with guide way (11) on frame (1), second connecting seat (22) slip sets up in guide way (11) of frame (1), just be equipped with the scale on guide way (11).
2. The method for replacing the reverse-pushing C duct sliding rail structure of the V2500 engine according to claim 1, which is characterized in that: the articulated arm (2) further comprises a spindle (23), the first connection seat (21) and the second connection seat (22) being mutually hinged by means of the spindle (23).
3. The method for replacing the reverse-pushing C duct sliding rail structure of the V2500 engine according to claim 2, which is characterized in that: the first connecting seat (21) comprises a first connecting body (211) and a sleeve (212), the first connecting body (211) is fixedly connected with the mold frame positioning guide rail (3), the second connecting seat (22) comprises a second connecting body (221) and a sliding block (222), a through hole (223) is formed in the second connecting body (221), one end of the mandrel (23) penetrates through the through hole (223) and the sleeve (212) and is locked through a first locking piece (213), and the sliding block (222) is arranged in the guide groove (11) and is locked through a second locking piece.
4. The method for replacing the reverse-pushing C duct slide rail structure of the V2500 engine according to claim 3, wherein the method comprises the steps of: a gasket is further arranged between the second locking piece and the guide groove (11).
5. The method for replacing the reverse-pushing C duct sliding rail structure of the V2500 engine according to claim 4, which is characterized in that: the axial direction of the spindle (23) is perpendicular to the sliding direction of the sliding block (222) in the guide groove (11).
6. The method for replacing a reverse-thrust C duct slide rail structure of a V2500 engine according to any one of claims 3-5, wherein: the first locking piece (213) is a butterfly nut, and the second locking piece is a hexagon socket screw.
7. The method for replacing the reverse-pushing C duct sliding rail structure of the V2500 engine according to claim 6, which is characterized in that: the first connecting body (211) is fixedly connected with the frame positioning guide rail (3) through a screw (214).
8. The method of reverse pushing C duct rail structure of V2500 engine of claim 7, wherein: in the step (S5), the position of the C duct slide rail structure is reversely pushed before and after replacement is accurately positioned through a graduated scale on the guide groove (11).
9. The method for replacing the reverse-pushing C duct sliding rail structure of the V2500 engine according to claim 1, which is characterized in that: in the step (S2), the frame (1) can ensure that the new back-pushing C duct slide rail structure is absolutely parallel to the old back-pushing C duct slide rail structure in a three-dimensional space, and the distance and the relative angle are fixed, and the frame has good rigidity and does not deform or unstably.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010392317.XA CN111703586B (en) | 2020-05-11 | 2020-05-11 | Replacement method of reverse-pushing C duct sliding rail structure of V2500 engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010392317.XA CN111703586B (en) | 2020-05-11 | 2020-05-11 | Replacement method of reverse-pushing C duct sliding rail structure of V2500 engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111703586A CN111703586A (en) | 2020-09-25 |
| CN111703586B true CN111703586B (en) | 2023-05-30 |
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| CN202010392317.XA Active CN111703586B (en) | 2020-05-11 | 2020-05-11 | Replacement method of reverse-pushing C duct sliding rail structure of V2500 engine |
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| CN (1) | CN111703586B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6824101B2 (en) * | 2003-02-17 | 2004-11-30 | The Boeing Company | Apparatus and method for mounting a cascade support ring to a thrust reverser |
| US8511973B2 (en) * | 2010-06-23 | 2013-08-20 | Rohr, Inc. | Guide system for nacelle assembly |
| CN103192330B (en) * | 2013-03-25 | 2014-11-05 | 广州飞机维修工程有限公司 | Maintaining clamp for jet braking C duct of civil aviation passenger plane |
| FR3005302B1 (en) * | 2013-05-06 | 2015-06-05 | Sagem Defense Securite | DEVICE FOR CONTROLLING THE POWER OF AN ENGINE AND A THRUST INVERTER DEVICE |
| FR3085726B1 (en) * | 2018-09-07 | 2020-12-11 | Safran Nacelles | THRUST INVERTER WITH MOBILE C-STRUCTURE FOR AN AIRCRAFT PROPELLER ASSEMBLY, AND RELATED MAINTENANCE PROCESS |
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2020
- 2020-05-11 CN CN202010392317.XA patent/CN111703586B/en active Active
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