CN103683709B - Large-size machine takes out the fast servo method of rotor online - Google Patents
Large-size machine takes out the fast servo method of rotor online Download PDFInfo
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- CN103683709B CN103683709B CN201210345720.2A CN201210345720A CN103683709B CN 103683709 B CN103683709 B CN 103683709B CN 201210345720 A CN201210345720 A CN 201210345720A CN 103683709 B CN103683709 B CN 103683709B
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Abstract
The present invention relates to steel rolling equipment area of maintenance, be specially a kind of fast servo method that large-size machine takes out rotor online; It comprises step: motor cardan is removed; Motor bearing seat on watt is removed, and outsides cover of electric machinery is removed, and motor stator anchor bolt is removed; Motor encoder, thrust bearing are removed; It is characterized in that: play rotor hanging beam with traveling crane, hanging beam is arranged at motor stator top, hang jack, wirerope at rotor hanging beam two ends, mentioned by rotor by jack, rotor does not contact with motor stator inside; At motor stator corner erection electric hydraulic lifting jack, the synchronous jack-up motor stator of electric hydraulic lifting jack and the rotor fixed by rotor hanging beam; Electric hydraulic lifting jack is risen to rotor lowest order and exceed bearing pedestal plane, then play rotor hanging beam with traveling crane, extract rotor out.Large-size machine jacking can complete and takes out rotor operation by the present invention quickly and safely, overcomes the defect existing for traditional large-size machine lifting operation.
Description
Technical field
The present invention relates to steel rolling equipment area of maintenance, be specially a kind of fast servo method that large-size machine takes out rotor online.
Background technology
At current smelter, heavy motor is taken out rotor online and is generally adopted motor jacking---take out the method for rotor, jack-block is generally less than motor total weight based on the driving rated load weight in workshop, rolling mill main motor place, can not hook block electrizer rotor and a stator, therefore, using rotor and stator as separating component, driving and jack must be utilized simultaneously, realized by the principle repeatedly alternately hoisted.The general thought that the method realizes utilizes traveling crane to hang rotor, be distributed in stator four footing by mechanic jacks and withstand stator, then lifting of travelling crane rotor is used, lifting altitude is less than the air gap value between rotor and stator, after rotor hoists and puts in place, four mechanic jacks of stator footing are shaken, synchronization of jacking up stator, the rising height of stator is less than 2 times of air gap values, this is a jacking, then adopting uses the same method carries out repeatedly repeatedly, can realize the synchronization of jacking up of rotor and stator.
Above-mentioned motor jacking---take out the method for rotor, mainly there is following problem: 1, the air gap value of rotor and stator is general very little, for the 7000KW synchronous motor that Shanghai motor group manufactures, air gap value is only 15mm, more than 30mm, can not calculate according to total lifting altitude 900mm it can thus be appreciated that the lifting altitude of each motor is maximum, altogether need 900mm ÷ 30mm/ time=30 time could by motor top to the position of taking out rotor, often, the time is long in jacking; 2, each jacking needs to be realized for coordinating with mechanic jacks timed delivery by driving, and mechanic jacks is operated by artificial mode, and synchronism is comparatively difficult to ensure card, and slightly deviation will cause rotor and stator to collide, and the risk of scraping is large; 3, mechanic jacks must be adopted in said method, definitely can not replace by hydraulic jack because hydraulic jack once occur leak or asynchronous, stator and rotor contact, cause total weight to act in driving, the serious accident that driving lifting capacity transfinites occurs most probably; 4, mechanic jacks jacking stator is realized by manual type, and inefficiency is long in time limit, and cost is high.
Summary of the invention
The object of the invention is to overcome the defect existing for existing lifting Large Rotor method, provide a kind of required construction operation time short, save manpower, fail safe high, the online fast servo method of the large-size machine of operation quality can be ensured.
In order to achieve the above object, the present invention is achieved in that
Large-size machine takes out a fast servo method for rotor online, and it comprises the steps:
Step one, motor cardan are removed and are hung;
Step 2, electric wiring and instrument are removed;
Step 3, motor two end axles bearing tears upper cover open and upper watt dismounting hangs, and outsides cover of electric machinery and annex are removed and hung, and motor stator anchor bolt is removed;
Step 4, motor encoder, thrust bearing and annex are removed and are hung;
Step 5, motor expanded shaft assemble;
It is characterized in that: also comprise a roots rotor hanging beam, jack, wirerope and following steps,
Step 6, play rotor hanging beam with traveling crane, hanging beam is arranged at motor stator top and leveling, then hang jack, wirerope at rotor hanging beam two ends, and mentioned by rotor by jack, rotor does not contact with motor stator inside;
Step 7, set up one group of electric hydraulic lifting jack in motor stator corner, the synchronous jack-up motor stator of described electric hydraulic lifting jack and by the fixing rotor of rotor hanging beam;
Step 8, electric hydraulic lifting jack is risen to rotor lowest order exceed bearing pedestal plane, then play rotor hanging beam with traveling crane, extract rotor out.
The present invention adopts above-mentioned operational method, can complete and takes out rotor operation fast, effectively, safely by large-size machine jacking, thus overcome the defect existing for existing traditional large-size machine lifting operation.
Accompanying drawing explanation
Fig. 1 is the front view of syndeton of the present invention.
Fig. 2 is the left view of syndeton of the present invention.
Embodiment
The present invention is further illustrated below by way of specific embodiment.
As shown in Figure 1 and Figure 2:
Large-size machine takes out a fast servo method for rotor online, and it comprises the steps:
Step one, motor cardan are removed and are hung;
Step 2, electric wiring and instrument are removed;
Step 3, motor two end axles bearing tears upper cover open and upper watt dismounting hangs, and outsides cover of electric machinery and annex are removed and hung, and motor stator anchor bolt is removed;
Step 4, motor encoder, thrust bearing and annex are removed and are hung;
Step 5, motor expanded shaft assemble;
Also comprise a roots rotor hanging beam 1, jack 6, wirerope 7 and following steps,
Step 6, play rotor hanging beam 1 with traveling crane, rotor hanging beam 1 is arranged at motor stator 3 top and leveling, then hang 6 jacks, wirerope 7 at rotor hanging beam 1 two ends, and mentioned by rotor 2 by jack 6, rotor 2 does not contact with motor stator 3 inside;
Step 7, set up one group of electric hydraulic lifting jack 4 motor stator 3 four jiaos, the synchronous jack-up motor stator 3 of described electric hydraulic lifting jack 4 and by the fixing rotor 2 of rotor hanging beam 1;
Step 8, electric hydraulic lifting jack 4 is risen to rotor 2 lowest order exceed bearing pedestal plane, then play rotor hanging beam 1 with traveling crane, extract rotor 2 out, so far, rotor lifting operation is complete.
The present invention adopts above-mentioned operational method, when carrying out such as rolling mill main motor and taking out repairing rotor online or install, can realize rolling mill main motor online fast, effectively, jacking complete and take out rotor operation safely, thus overcome the defect existing for existing traditional large-size machine lifting operation.
Claims (1)
1. large-size machine takes out a fast servo method for rotor online, and it comprises the steps:
Step one, motor cardan are removed and are hung;
Step 2, electric wiring and instrument are removed;
Step 3, motor two end axles bearing tears upper cover open and upper watt dismounting hangs, and outsides cover of electric machinery and annex are removed and hung, and motor stator anchor bolt is removed;
Step 4, motor encoder, thrust bearing and annex are removed and are hung;
Step 5, motor expanded shaft assemble;
It is characterized in that: also comprise a roots rotor hanging beam, jack, wirerope and following steps,
Step 6, play rotor hanging beam with traveling crane, hanging beam is arranged at motor stator top and leveling, then hang jack, wirerope at rotor hanging beam two ends, and mentioned by rotor by jack, rotor does not contact with motor stator inside;
Step 7, set up one group of electric hydraulic lifting jack in motor stator corner, the synchronous jack-up motor stator of described electric hydraulic lifting jack and by the fixing rotor of rotor hanging beam;
Step 8, electric hydraulic lifting jack is risen to rotor lowest order exceed bearing pedestal plane, then play rotor hanging beam with traveling crane, extract rotor out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210345720.2A CN103683709B (en) | 2012-09-18 | 2012-09-18 | Large-size machine takes out the fast servo method of rotor online |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210345720.2A CN103683709B (en) | 2012-09-18 | 2012-09-18 | Large-size machine takes out the fast servo method of rotor online |
Publications (2)
| Publication Number | Publication Date |
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| CN103683709A CN103683709A (en) | 2014-03-26 |
| CN103683709B true CN103683709B (en) | 2016-03-30 |
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| CN201210345720.2A Active CN103683709B (en) | 2012-09-18 | 2012-09-18 | Large-size machine takes out the fast servo method of rotor online |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104113167A (en) * | 2013-04-17 | 2014-10-22 | 上海宝冶集团有限公司 | Method for fast pushing up and online pulling out a rotor of a rolling mill main motor |
| CN105905789A (en) * | 2016-06-24 | 2016-08-31 | 上海宝田新型建材有限公司 | Device special for lifting large motor rotor and lifting method |
| CN107359749A (en) * | 2017-07-06 | 2017-11-17 | 江苏华电仪征热电有限公司 | A kind of device and method that rotor is taken out for auxiliary generator |
| CN107579629A (en) * | 2017-10-10 | 2018-01-12 | 中国二十冶集团有限公司 | The method for dismounting of main driving motor |
| CN112072865A (en) * | 2020-08-08 | 2020-12-11 | 广东韶钢工程技术有限公司 | Large-scale motor online core-pulling device and application method thereof |
| CN113037028B (en) * | 2021-04-28 | 2022-05-10 | 台山核电合营有限公司 | Device for drawing through generator rotor |
| CN114448183A (en) * | 2022-02-17 | 2022-05-06 | 重庆水轮机厂有限责任公司 | Core-pulling and core-penetrating overall assembly method for generator rotor |
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| CN101114786A (en) * | 2007-08-28 | 2008-01-30 | 天津二十冶建设有限公司 | Hanging method using C-beam piercing core hanging large-scale electric motor and C-beam structure |
| CN201563035U (en) * | 2009-12-09 | 2010-08-25 | 中国铝业股份有限公司 | Motor stator and rotor core loosing and loading device |
| CN101976913A (en) * | 2010-10-29 | 2011-02-16 | 中国三冶集团有限公司电气安装工程公司 | Main driving motor hoisting method of roughing mill |
| CN102306979A (en) * | 2011-09-10 | 2012-01-04 | 中国十七冶集团有限公司 | Core pulling and threading method for overhauling of large motor |
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- 2012-09-18 CN CN201210345720.2A patent/CN103683709B/en active Active
Patent Citations (4)
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| CN101114786A (en) * | 2007-08-28 | 2008-01-30 | 天津二十冶建设有限公司 | Hanging method using C-beam piercing core hanging large-scale electric motor and C-beam structure |
| CN201563035U (en) * | 2009-12-09 | 2010-08-25 | 中国铝业股份有限公司 | Motor stator and rotor core loosing and loading device |
| CN101976913A (en) * | 2010-10-29 | 2011-02-16 | 中国三冶集团有限公司电气安装工程公司 | Main driving motor hoisting method of roughing mill |
| CN102306979A (en) * | 2011-09-10 | 2012-01-04 | 中国十七冶集团有限公司 | Core pulling and threading method for overhauling of large motor |
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| CN103683709A (en) | 2014-03-26 |
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