CN103056653B - A kind of bracket type core machine assembly method - Google Patents
A kind of bracket type core machine assembly method Download PDFInfo
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- CN103056653B CN103056653B CN201310011077.4A CN201310011077A CN103056653B CN 103056653 B CN103056653 B CN 103056653B CN 201310011077 A CN201310011077 A CN 201310011077A CN 103056653 B CN103056653 B CN 103056653B
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- high pressure
- core engine
- pressure rotor
- machine assembly
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Abstract
A kind of bracket type core machine assembly method, belongs to aero-engine mounting technology field.The invention provides a kind of bracket type core machine assembly method, the assembling of the core engine of engine moves on the bracket of ground by the method to be carried out, and reduces assembling height, reduces labour intensity and the operational risk of operator, improve efficiency of assembling simultaneously.The present invention specifically comprises the steps: to be installed to by Middle casing on the brace table of core engine assembling bracket, will be fixedly connected on brace table after its adjustment level; High pressure rotor is put into the central cone bore of Middle casing, after being in place, screw in the first nut; Carry out the assembling of high pressure casing; Carry out combustion chamber assembling; Carry out high-pressure turbine assembling, now core engine has been assembled; Core engine suspender is connected with core engine; Remove Middle casing and being fixedly connected with between brace table, core engine winched on assembling car also fixing, upset assembling car, continues screw-in first nut, carries out final assembly.<!--1-->
Description
Technical field
The invention belongs to aero-engine mounting technology field, relate to a kind of bracket type core machine assembly method.
Background technology
Core engine assembling is the later stage operation in engine manufacture process, occupies very consequence in whole production process.Assembling process is not only the proof procedure to the workmanship of part and parts, assembly, finished parts, annex assembly quality, and assembly quality directly has influence on the performance of engine, life-span and functional reliability.The amount of labour in assembling process is also comparatively large, and assembling average work load accounts for 30% of engine manufacturing effort, and the quality of visible assembling process and efficiency directly affect quality and the efficiency of engine.
Turning to the extensive batch product stage because current engine is in by criticizing product on a small scale, being of great significance so improve engine assembly efficiency tool.
For three generations's machine and two duct engine, major part engine adopts cell cube to design in design, therefore, a lot of country and production unit all adopt cell cube assembly method, become independently junior unit body or core engine is assembled into large cell cube by engine assembly, as certain assembling that rebuilds an engine, not only increase the interchangeability of engine like this, improve production efficiency simultaneously, reduce labour intensity and risk.
The core engine assembling of current engine all completes on upset assembling car, this assembling car can complete the whole assembly work of complete machine, but because assembling car is higher, operator is when carrying out core engine assembling, need repeatedly to get on and off parts of taking, the limited space of assembly fixture simultaneously, in assembling process, part operation cannot be carried out simultaneously, adds the final assembly cycle.Given this, determine to carry out special studies project to the core engine assembling of engine.
Summary of the invention
For prior art Problems existing, the invention provides a kind of bracket type core machine assembly method, the assembling of the core engine of engine moves on the bracket of ground by the method to be carried out, and reduces assembling height, reduce labour intensity and the operational risk of operator, improve efficiency of assembling simultaneously.
To achieve these goals, the present invention adopts following technical scheme, and a kind of bracket type core machine assembly method, specifically comprises the steps:
Step one: Middle casing is installed on the brace table of core engine assembling bracket, will is fixedly connected on brace table after its adjustment level;
Step 2: central cone bore high pressure rotor being put into Middle casing, screws in the first nut after being in place;
Step 3: carry out the assembling of high pressure casing;
Step 4: carry out combustion chamber assembling;
Step 5: carry out high-pressure turbine assembling, now core engine has been assembled;
Step 6: core engine suspender is connected with core engine;
Step 7: remove Middle casing and being fixedly connected with between brace table, winches on assembling car also fixing by core engine, upset assembling car, continues screw-in first nut, carry out final assembly.
Central cone bore high pressure rotor being put into Middle casing described in step 2, measures the method whether it is seated, specifically comprises the steps:
Steps A: before high pressure rotor assembling, carry out following dimensional measurement: before high pressure rotor, the front end face of axle journal is to the size T of convex shoulder, the size N of central cone gear shaft front end to the three fulcrum roller sealed track assembly inner face of Middle casing, and the difference S both calculating, S=T-N;
Step B: put into the central cone bore of Middle casing at high pressure rotor after, carry out following dimensional measurement: before high pressure rotor, the front end face of axle journal is to the dimension D of central cone gear shaft front end;
Step C: the difference of driven dimension D and S, if D=S ± 0.02mm, then high pressure rotor is seated; Otherwise then high pressure rotor assembling is not in place.
Core engine assembling bracket described in step one, comprises brace table, the below of brace table is provided with foundation bolt and movable castor; Described foundation bolt plays horizontal adjustment and fixation, and movable castor is used for shift position.
Assemble at various height for the ease of operator, the side of described brace table is provided with station rack, the below of station rack is provided with foundation bolt and movable castor; Operator can according to the random mobile station rack in position of operation.
Conveniently the upper and lower station rack of operator, is provided with ladder in the side of described station rack.
Core engine suspender described in step 6, comprises mandrel, has internal and external screw thread respectively in the upper end of mandrel, and internal thread is connected with the lifting bolt be arranged on above mandrel, and external screw thread is connected with the endoporus of the casing supporting seat be arranged on below lifting bolt; The bearing spider with through hole is provided with in the bottom of casing supporting seat, bearing spider is arranged on mandrel by through hole, bearing spider is provided with axle sleeve, axle sleeve is provided with the roller bearing without outer ring, below axle sleeve, on bearing spider, is provided with round nut; The lower end of described mandrel is connected with spindle nut.
Above described spindle nut, the periphery of mandrel is provided with pad.
Fixed by pin between described mandrel and casing supporting seat.
Described casing supporting seat is connected by bolt with between bearing spider.
Beneficial effect of the present invention:
The assembling of the core engine of engine moves on the bracket of ground and carries out by the present invention, reduce assembling height, reduce labour intensity and the operational risk of operator, improve efficiency of assembling simultaneously, achieve core engine to assemble separately, draw from the experimental verification over 4 years, the method is reliable and stable, the every platform of core engine installation time (just dress+inspection dress) approximately shortens 417.05 hours, economizes on the use of funds 417.05 hours × 38 yuan/hour=15847.9 yuan.And parallel work-flow can be carried out by multiple stage engine, solve the deficiency of upset assembling car and production site, achieve engine by small serial production to extensive batch of transition of producing.
Accompanying drawing explanation
Fig. 1 is the structural representation of core engine assembling bracket;
Fig. 2 is the structural representation of core engine suspender;
Fig. 3 is the structural representation of core engine, core engine assembling bracket and core engine suspender after assembling;
Fig. 4 is the structural representation of high pressure rotor and central cone gear junction;
In figure, 1--Middle casing, 2--core engine assembling bracket, 3--foundation bolt, 4--brace table, 5--high pressure rotor, 6--central cone gear, the 7-the first nut, 8--high pressure casing, 9--combustion chamber, 10-high-pressure turbine, 11--core engine suspender, 12-lifting bolt, 13-mandrel, 14-casing supporting seat, 15-pad, 16-spindle nut, 17--movable castor, 18--station rack, 19--ladder, 20-bearing spider, 21-axle sleeve, 22-without the roller bearing of outer ring, 23-round nut, 24-pin;
The size of central cone gear shaft front end to the three fulcrum roller sealed track assembly inner face of N--Middle casing, before T--high pressure rotor, the front end face of axle journal is to the size of convex shoulder, and before D--high pressure rotor, the front end face of axle journal is to the size of central cone gear shaft front end.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
As shown in Fig. 1 ~ Fig. 4, a kind of bracket type core machine assembly method, specifically comprises the steps:
Step one: Middle casing 1 is installed on the brace table 4 of core engine assembling bracket 2 with omnipotent suspender, the foundation bolt 3 of adjustment core engine assembling bracket 2 makes Middle casing 1 be horizontal, horizon rule can be adopted to check, and whether Middle casing 1 is horizontal, and is then fixed on brace table 4 with screw by Middle casing 1;
Whether step 2: high pressure rotor 5 of slinging, makes it aim at central cone gear 6 endoporus of Middle casing 1, after aligning, high pressure rotor 5 is fallen into lentamente central cone gear 6 endoporus, then measure high pressure rotor 5 and be in place;
As shown in Figure 4, described central cone gear 6 endoporus high pressure rotor 5 being put into Middle casing 1, measures the method whether it is seated, specifically comprises the steps:
Survey tool: vernier depth gauge;
Steps A: measure the size N of the central cone gear 6 axle front end in Middle casing 1 to three fulcrum roller sealed track assembly inner faces;
Step B: cleaned up by central cone gear 6 endoporus, then self-heating apparatus bringing-up section is put into endoporus, keeps 30 ~ 40min;
Step C: to sling high pressure rotor 5 with omnipotent suspender, measures the size T of front end face to convex shoulder of axle journal before high pressure rotor 5, and the difference S both calculating, S=T-N;
Step D: after high pressure rotor 5 puts into central cone gear 6 endoporus of Middle casing 1, carry out following dimensional measurement: before high pressure rotor 5, axle journal is to the dimension D of the central cone gear 6 axle front end of Middle casing 1;
Step e: the difference of driven dimension D and S, as D=S ± 0.02mm, then high pressure rotor 5 is seated; Otherwise then high pressure rotor 5 assembles not in place;
As D<S, and difference is within the scope of 0.1mm, then use 30 tons of pullers axially to pull high pressure rotor 5, pull down 30 tons of pullers and remeasure D, make D=S ± 0.02mm; Otherwise ressemble, until be seated;
Step 3: carry out high pressure casing 8 and assemble;
Step 4: carry out combustion chamber 9 and assemble;
Step 5: carry out high-pressure turbine 10 and assemble, now core engine has been assembled;
Step 6: the lifting bolt 12 of core engine suspender 11 of slinging with crane, then slowly falls into high-pressure turbine 10 by mandrel 13, through high pressure rotor 5, mandrel 13 lower end is stretched out from the first nut 7; Casing supporting seat 14 is connected by the screw and nut on casing supporting seat 14 with combustion chamber 9, then from the below hand of Middle casing 1, pad 15 and spindle nut 16 is installed to mandrel 13 lower end;
Step 7: dismounting Middle casing 1 and core engine assemble the attachment screw between bracket 2 brace table 4, core engine is winched on assembling car also fixing by core engine suspender 11, upset assembling car, uses the moment of 1000 ~ 1500Nm to continue to tighten the first nut 7, carries out final assembly.
As shown in Figure 1, the core engine assembling bracket 2 described in step one, comprises brace table 4, is provided with foundation bolt 3 and movable castor 17 in the below of brace table 4; Described foundation bolt 3 horizontal adjustment and fixation, movable castor 17 is for shift position.
Assemble at various height for the ease of operator, the side of described brace table 4 is provided with station rack 18, be provided with foundation bolt 3 and movable castor 17 in the below of station rack 18; Operator can according to the random mobile station rack 18 in position of operation.
Conveniently the upper and lower station rack 18 of operator, is provided with ladder 19 in the side of described station rack 18.
As shown in Figure 2, core engine suspender 11 described in step 6, comprise mandrel 13, respectively there is internal and external screw thread in the upper end of mandrel 13, internal thread is connected with the lifting bolt 12 be arranged on above mandrel 13, and external screw thread is connected with the endoporus of the casing supporting seat 14 be arranged on below lifting bolt 12; The bearing spider 20 with through hole is provided with in the bottom of casing supporting seat 14, bearing spider 20 is arranged on mandrel 13 by through hole, bearing spider 20 is provided with axle sleeve 21, axle sleeve 21 is provided with the roller bearing 22 without outer ring, below axle sleeve 21, on bearing spider 20, is provided with round nut 23; The lower end of described mandrel 13 is connected with spindle nut 16.
Above described spindle nut 16, the periphery of mandrel 13 is provided with pad 15.
Fixed by pin 24 between described mandrel 13 and casing supporting seat 14.
Described casing supporting seat 14 is connected by bolt with between bearing spider 20.
Claims (8)
1. a bracket type core machine assembly method, is characterized in that, specifically comprises the steps:
Step one: Middle casing is installed on the brace table of core engine assembling bracket, will is fixedly connected on brace table after its adjustment level;
Step 2: central cone bore high pressure rotor being put into Middle casing, screws in the first nut after being in place, wherein measure the method whether high pressure rotor is in place, concrete steps are as follows:
Steps A: before high pressure rotor assembling, central cone bore is cleaned up, then self-heating apparatus bringing-up section is put into endoporus, keep 30 ~ 40min, and carrying out following dimensional measurement: before high pressure rotor, the front end face of axle journal is to the size T of convex shoulder, the size N of central cone gear shaft front end to the three fulcrum roller sealed track assembly inner face of Middle casing, and the difference S both calculating, S=T-N;
Step B: put into the central cone bore of Middle casing at high pressure rotor after, carry out following dimensional measurement: before high pressure rotor, the front end face of axle journal is to the dimension D of central cone gear shaft front end;
Step C: the difference of driven dimension D and S, if D=S ± 0.02mm, then high pressure rotor is seated; Otherwise then high pressure rotor assembling is not in place; As D < S, and difference is within the scope of 0.1mm, then use puller axially to pull high pressure rotor, pull down puller and remeasure D, make D=S ± 0.02mm; Otherwise ressemble, until be seated;
Step 3: carry out the assembling of high pressure casing;
Step 4: carry out combustion chamber assembling;
Step 5: carry out high-pressure turbine assembling, now core engine has been assembled;
Step 6: core engine suspender is connected with core engine;
Step 7: remove Middle casing and being fixedly connected with between brace table, winches on assembling car also fixing by core engine, upset assembling car, continues screw-in first nut, carry out final assembly.
2. bracket type core machine assembly method according to claim 1, is characterized in that described core engine assembling bracket, comprises brace table, the below of brace table is provided with foundation bolt and movable castor.
3. bracket type core machine assembly method according to claim 2, is characterized in that the side of described brace table is provided with station rack, the below of station rack is provided with foundation bolt and movable castor.
4. bracket type core machine assembly method according to claim 3, is characterized in that the side of described station rack is provided with ladder.
5. bracket type core machine assembly method according to claim 1, it is characterized in that described core engine suspender, comprise mandrel, respectively there is internal and external screw thread in the upper end of mandrel, internal thread is connected with the lifting bolt be arranged on above mandrel, and external screw thread is connected with the endoporus of the casing supporting seat be arranged on below lifting bolt; The bearing spider with through hole is provided with in the bottom of casing supporting seat, bearing spider is arranged on mandrel by through hole, bearing spider is provided with axle sleeve, axle sleeve is provided with the roller bearing without outer ring, below axle sleeve, on bearing spider, is provided with round nut; The lower end of described mandrel is connected with spindle nut.
6. bracket type core machine assembly method according to claim 5, is characterized in that above described spindle nut, the periphery of mandrel is provided with pad.
7. bracket type core machine assembly method according to claim 5, is characterized in that being fixed by pin between described mandrel and casing supporting seat.
8. bracket type core machine assembly method according to claim 5, is characterized in that described casing supporting seat is connected by bolt with between bearing spider.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310011077.4A CN103056653B (en) | 2013-01-11 | 2013-01-11 | A kind of bracket type core machine assembly method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310011077.4A CN103056653B (en) | 2013-01-11 | 2013-01-11 | A kind of bracket type core machine assembly method |
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| CN103056653A CN103056653A (en) | 2013-04-24 |
| CN103056653B true CN103056653B (en) | 2015-12-02 |
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| CN201310011077.4A Expired - Fee Related CN103056653B (en) | 2013-01-11 | 2013-01-11 | A kind of bracket type core machine assembly method |
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| CN103567739B (en) * | 2013-08-12 | 2016-02-24 | 中国航空工业集团公司沈阳发动机设计研究所 | A kind of aero-engine flip horizontal general assemble platform and assembly technology |
| CN103586827B (en) * | 2013-11-11 | 2015-06-24 | 沈阳黎明航空发动机(集团)有限责任公司 | Axial-flow compressor unit body component assembling device and method |
| CN104476096B (en) * | 2014-10-27 | 2016-08-24 | 沈阳黎明航空发动机(集团)有限责任公司 | A kind of suspension ring restorative procedure of Middle casing |
| CN105458647B (en) * | 2015-11-20 | 2017-06-30 | 沈阳黎明航空发动机(集团)有限责任公司 | Rotor and assembly method of the stator axial gap without the power turbine for adjusting |
| CN108857377A (en) * | 2018-06-07 | 2018-11-23 | 中国航发沈阳发动机研究所 | A kind of aero-engine assembly method |
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| CN110899284B (en) * | 2019-11-26 | 2022-01-28 | 中国航发沈阳黎明航空发动机有限责任公司 | Full-automatic carbon-hydrogen cleaning and fixing device for rotor |
| CN113756875B (en) * | 2021-09-03 | 2023-11-24 | 中国航发哈尔滨东安发动机有限公司 | Aircraft engine core engine whole motor balance assembly method |
| CN114918871B (en) * | 2022-06-29 | 2023-09-22 | 中国航发动力股份有限公司 | Rotor assembly frame and application method thereof |
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Address after: 110043 Dong TA street, Dadong District, Shenyang, Liaoning Province, No. 6 Patentee after: Chinese Hangfa Shenyang Liming Aero engine limited liability company Address before: 110043 Dong TA street, Dadong District, Shenyang, Liaoning Province, No. 6 Patentee before: Liming Aeroplane Engine (Group) Co., Ltd., Shenyang City |
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Granted publication date: 20151202 Termination date: 20210111 |
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