CN108581874B - Centering tool for main shaft bearing end cover of wind generating set and end cover adjusting method thereof - Google Patents
Centering tool for main shaft bearing end cover of wind generating set and end cover adjusting method thereof Download PDFInfo
- Publication number
- CN108581874B CN108581874B CN201810320285.5A CN201810320285A CN108581874B CN 108581874 B CN108581874 B CN 108581874B CN 201810320285 A CN201810320285 A CN 201810320285A CN 108581874 B CN108581874 B CN 108581874B
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- end cover
- main shaft
- round platform
- centering
- shaft bearing
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000005520 cutting process Methods 0.000 claims abstract description 12
- 230000001788 irregular Effects 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 39
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Of Bearings (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses a centering tool for a main shaft bearing end cover of a wind generating set and an end cover adjusting method thereof, wherein the centering tool is of an irregular round platform structure, one side of the round platform structure is a flat cutting surface parallel to the axis of the round platform, the flat cutting surface is formed by vertically cutting from one end face of the round platform to the other end face, and the other side of the round platform structure is still an arc surface with taper. The invention can effectively solve the problem of oil leakage of the main shaft bearing seal of the double-feed type wind generating set with the double-support structure, thereby improving the running stability of the set.
Description
Technical Field
The invention relates to the technical field of sealing oil leakage of a main shaft bearing, in particular to a centering tool for a main shaft bearing end cover of a wind generating set and an end cover adjusting method thereof.
Background
In the prior art, a double-fed wind generating set with a large megawatt double-support structure is characterized in that a transmission chain main shaft is provided with two main shaft bearings, a main shaft bearing sealing structure belongs to static rotary sealing, and is arranged on the main shaft along with a bearing seat, an end cover and an oil seal cover plate during workshop assembly, and the structure of the double-fed wind generating set consists of a sealing ring, the end cover, the oil seal cover plate, the bearing seat and the main shaft. The sealing ring is arranged in the end cover (positioned by the end cover), and the sealing lip radially hoops the outer circular surface of the main shaft; the oil seal cover plate axially compresses the sealing ring and is fixed on the end cover; the end cap is finally fixed on the bearing seat. The circular ring shape of the sealing ring mainly adopts a cloth clamping sealing ring, also called a cloth clamping oil seal, and consists of a main lip and an auxiliary lip, wherein the main lip mainly seals grease, and the auxiliary lip mainly prevents dust and ultraviolet and is used for auxiliary sealing. The end cover and the bearing seat are castings and are connected and fixed through bolts.
Factors such as inclination angle, vibration, bearing play, sealing ring quality defect (small interference), part deviation and the like in the running process of the fan cause the problem of main shaft bearing sealing oil leakage commonly existing in the double-feed wind generating set with a double-support structure, and the oil leakage can cause bearing failure due to oil shortage and overtemperature, bearing abrasion and serious bearing failure, thereby causing inconvenience and even great economic loss to the running maintenance of the fan.
At present, the main reasons of the problem of sealing oil leakage of a main shaft bearing of a double-feed type wind generating set with a double-support structure are as follows: 1. the design defect of the sealing ring; 2. vibrating the unit in the running process; 3. the design tolerance of the parts of the end cover is unreasonable, the machining error of the parts is large, the accumulated error of the mounting deviation of the parts is large, and the like, so that the sealing gap is formed to cause the sealing oil leakage of the main shaft bearing.
Disclosure of Invention
The invention aims to overcome the defects and the shortcomings of the prior art, and provides a centering tool for a main shaft bearing end cover of a wind generating set and an end cover adjusting method thereof, which are reasonable and reliable in structure and convenient to use, and can effectively solve the problem of sealing oil leakage of the main shaft bearing of the double-feed type wind generating set with a double-support structure, thereby improving the running stability of the set.
In order to achieve the above purpose, the technical scheme provided by the invention is as follows:
the centering tool for the spindle bearing end cover of the wind generating set is of an irregular round platform structure, one side of the round platform structure is a flat cutting surface parallel to the axis of the round platform, the flat cutting surface is formed by vertically cutting from one end face of the round platform to the other end face, and the other side of the round platform structure is still an arc surface with taper.
The middle part of the round platform structure vertically penetrates through a threaded hole which is coaxial with the round platform, and the threaded hole is matched with a screw rod which is used as a handle of the round platform.
A process identification hole is formed in the large end face of the circular truncated cone structure, and the large end face is actually machined.
When the end cover adjusting method of the centering tool for the main shaft bearing end cover of the wind generating set is used, end cover bolts are unscrewed firstly, 3 process holes which are uniformly distributed on the end cover are used as positioning references of the centering tool, 3 centering tools are simultaneously inserted into a sealing ring mounting cavity of the end cover, one centering tool corresponds to one process hole and is required to face a main shaft bearing, a large end face faces away from the main shaft bearing, a plane section is contacted with the outer circle of the main shaft, a tapered circular arc face is contacted with the inner wall of the sealing ring mounting cavity, then the length dimension of the end cover part is exposed through measuring the centering tool, the centering deviation of the end cover is calculated according to a trigonometric function, the end cover is concentric with the main shaft according to the deviation value, after the sealing ring is mounted in the end cover and the main shaft, the sealing ring can be centered with the main shaft, and a gap does not exist between a lip and the outer circle of the main shaft after the sealing ring is centered, so that the problem of oil leakage of the sealing ring is effectively solved.
The deviation of the concentricity of the end cover and the main shaft after adjustment is less than or equal to 0.2mm.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the centering tool is small in size, convenient to carry, reusable and low in processing and manufacturing cost.
2. The method has the advantages of no consumption in the adjustment process, extremely low adjustment economic cost, high adjustment precision, capability of ensuring that the centering installation deviation of the end cover is less than or equal to 0.2mm, and suitability for popularization from both economic angles and application effects.
In a word, the centering tool and the adjusting method thereof provided by the invention can effectively solve the problem of oil leakage of the sealing of the main shaft bearing, thereby improving the running stability of the unit and having practical popularization value.
Drawings
Fig. 1 is a front view of the tooling of the present invention.
Fig. 2 is a top view of the tooling of the present invention.
Fig. 3 is a schematic diagram of the practical use of the tool of the present invention.
Fig. 4 is a schematic diagram of a spindle bearing seal leak.
Fig. 5 is an effect diagram of the spindle bearing after the oil leakage treatment.
Detailed Description
The invention will be further illustrated with reference to specific examples.
Referring to fig. 1 and 2, the centering tool for a spindle bearing end cover of a wind turbine generator system provided in this embodiment is specifically an irregular circular truncated cone structure, wherein one side of the circular truncated cone structure is a plane cutting surface 11 parallel to the axis of the circular truncated cone, the plane cutting surface 11 is formed by vertically cutting from one end surface of the circular truncated cone to the other end surface, and the other side of the circular truncated cone structure is a circular arc surface 12 with taper; a threaded hole 13 with the same axis as the round table vertically penetrates through the middle part of the round table structure, and the threaded hole 12 is matched with a screw rod 2 (shown in fig. 3) serving as a round table handle; the large end face of the truncated cone structure is provided with a process identification hole 14, so that the large end face is actually used for machining.
The following is the end cover adjusting method of the centering tool for the main shaft bearing end cover of the wind generating set, when the end cover adjusting method is used, firstly unscrewing end cover bolts, taking three process holes which are uniformly distributed at 120 degrees on the end cover as the positioning standard of the centering tool, simultaneously inserting the three centering tools 1 into the sealing ring mounting cavity of the end cover, and one centering tool corresponding to one process hole, as shown in fig. 3, and requiring that the small end surface of the centering tool 1 faces the main shaft bearing, the large end surface faces away from the main shaft bearing, the flat tangential surface 11 contacts with the main shaft excircle 3, the tapered circular arc surface 12 contacts with the sealing ring mounting cavity inner wall 4, then measuring the length dimension of the exposed end cover part of the centering tool, converting the end cover centering deviation according to a trigonometric function, and adjusting the end cover position according to the deviation value, so that the end cover is concentric with the main shaft, after the concentricity deviation between the end cover and the main shaft is adjusted, the sealing ring is arranged in the end cover, after the end cover is centered with the main shaft, the sealing ring can be centered with the main shaft, and the lip opening and the main shaft excircle of the sealing ring can not have gaps, thereby effectively sealing oil leakage.
Referring to fig. 4 and 5, schematic diagrams before and after oil leakage treatment of the spindle bearing seal in situ are shown, wherein the maximum deviation of the front end cover centering is treated to be 0.7mm, and the maximum deviation of the front end cover centering is treated to be 0.2mm after the centering is carried out again by using the centering tool. After treatment, verification is carried out for 5 months, and the sealing ring slightly seeps oil to achieve the treatment effect. Therefore, the centering tool and the adjusting method thereof provided by the invention can effectively solve the problem of oil leakage of the sealing of the spindle bearing, are small in size, convenient to carry, reusable, low in processing and manufacturing cost, free of consumable materials in the adjusting process, extremely low in adjusting economic cost, high in adjusting precision according to the method provided by the invention, capable of ensuring that the centering installation deviation of the end cover is less than or equal to 0.2mm, and practical popularization from the economic angle and application effect, and worthy of popularization.
The above embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, so variations in shape and principles of the present invention should be covered.
Claims (5)
1. Wind generating set main shaft bearing end cover centering frock, its characterized in that: the centering tool is of an irregular round platform structure, one side of the round platform structure is a flat cutting surface parallel to the axis of the round platform, the flat cutting surface is formed by vertically cutting from one end surface of the round platform to the other end surface, and the other side of the round platform structure is still an arc surface with taper.
2. The centering tool for a main shaft bearing end cover of a wind generating set according to claim 1, wherein: the middle part of the round platform structure vertically penetrates through a threaded hole which is coaxial with the round platform, and the threaded hole is matched with a screw rod which is used as a handle of the round platform.
3. The centering tool for a main shaft bearing end cover of a wind generating set according to claim 1, wherein: a process identification hole is formed in the large end face of the circular truncated cone structure, and the large end face is actually machined.
4. The end cover adjusting method of the centering tool for the main shaft bearing end cover of the wind generating set, which is characterized by comprising the following steps of: when the sealing device is used, the end cover bolt is unscrewed firstly, 3 process holes which are uniformly distributed on the end cover are used as the positioning references of the centering tools, 3 centering tools are simultaneously inserted into the sealing ring mounting cavity of the end cover, one centering tool corresponds to one process hole and is required to face the main shaft bearing, the large end face faces away from the main shaft bearing, the flat section contacts with the outer circle of the main shaft, the tapered arc face contacts with the inner wall of the sealing ring mounting cavity, the length dimension of the part of the end cover is exposed through the centering tools, the centering deviation of the end cover is converted according to a trigonometric function, the position of the end cover is adjusted according to the deviation value, the end cover and the main shaft can be concentric, after the sealing ring is mounted in the end cover, the sealing ring can be centered with the main shaft, and gaps do not exist between the lips after the sealing ring is centered with the outer circle of the main shaft, so that the sealing oil leakage problem is effectively solved.
5. The end cover adjusting method of the centering tool for the main shaft bearing end cover of the wind generating set, which is disclosed in claim 4, is characterized in that: the deviation of the concentricity of the end cover and the main shaft after adjustment is less than or equal to 0.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810320285.5A CN108581874B (en) | 2018-04-11 | 2018-04-11 | Centering tool for main shaft bearing end cover of wind generating set and end cover adjusting method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810320285.5A CN108581874B (en) | 2018-04-11 | 2018-04-11 | Centering tool for main shaft bearing end cover of wind generating set and end cover adjusting method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108581874A CN108581874A (en) | 2018-09-28 |
| CN108581874B true CN108581874B (en) | 2023-12-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810320285.5A Active CN108581874B (en) | 2018-04-11 | 2018-04-11 | Centering tool for main shaft bearing end cover of wind generating set and end cover adjusting method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108581874B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09174301A (en) * | 1995-12-25 | 1997-07-08 | Okuma Mach Works Ltd | Work method and device of both end surfaces of hollow work |
| JP2008137089A (en) * | 2006-11-30 | 2008-06-19 | Hitachi Constr Mach Co Ltd | Cutting device for slewing bearing mounting face |
| KR20130074177A (en) * | 2011-12-26 | 2013-07-04 | 현대중공업 주식회사 | Manufacturing zig for cylinder cover |
| CN103208888A (en) * | 2013-04-11 | 2013-07-17 | 广东明阳风电产业集团有限公司 | Detection and maintenance method for self-aligning roller bearing of spindle of wind driven generator and jacking tool |
| CN103867401A (en) * | 2014-01-23 | 2014-06-18 | 广东明阳风电产业集团有限公司 | Method for centering and adjusting mainshaft bearing shafting of wind generating set |
| CN104139372A (en) * | 2013-09-26 | 2014-11-12 | 国家电网公司 | Centering and positioning device and hole opposite penetration and alignment mechanism thereof |
| CN204735956U (en) * | 2015-05-26 | 2015-11-04 | 天津赛瑞机器设备有限公司 | A frock for making press upper portion instrument |
| CN105904362A (en) * | 2016-04-18 | 2016-08-31 | 西安交通大学 | Self-centering cylinder clamp device |
| CN106041825A (en) * | 2016-07-20 | 2016-10-26 | 广州广日电梯工程有限公司 | Car frame adjusting tool |
| CN208409643U (en) * | 2018-04-11 | 2019-01-22 | 明阳智慧能源集团股份公司 | A kind of wind driven generation set main shaft bearing (ball) cover centering tooling |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120066879A1 (en) * | 2010-09-20 | 2012-03-22 | Daeschner Bernd P | Assembly facilitation apparatus and method |
-
2018
- 2018-04-11 CN CN201810320285.5A patent/CN108581874B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09174301A (en) * | 1995-12-25 | 1997-07-08 | Okuma Mach Works Ltd | Work method and device of both end surfaces of hollow work |
| JP2008137089A (en) * | 2006-11-30 | 2008-06-19 | Hitachi Constr Mach Co Ltd | Cutting device for slewing bearing mounting face |
| KR20130074177A (en) * | 2011-12-26 | 2013-07-04 | 현대중공업 주식회사 | Manufacturing zig for cylinder cover |
| CN103208888A (en) * | 2013-04-11 | 2013-07-17 | 广东明阳风电产业集团有限公司 | Detection and maintenance method for self-aligning roller bearing of spindle of wind driven generator and jacking tool |
| CN104139372A (en) * | 2013-09-26 | 2014-11-12 | 国家电网公司 | Centering and positioning device and hole opposite penetration and alignment mechanism thereof |
| CN103867401A (en) * | 2014-01-23 | 2014-06-18 | 广东明阳风电产业集团有限公司 | Method for centering and adjusting mainshaft bearing shafting of wind generating set |
| CN204735956U (en) * | 2015-05-26 | 2015-11-04 | 天津赛瑞机器设备有限公司 | A frock for making press upper portion instrument |
| CN105904362A (en) * | 2016-04-18 | 2016-08-31 | 西安交通大学 | Self-centering cylinder clamp device |
| CN106041825A (en) * | 2016-07-20 | 2016-10-26 | 广州广日电梯工程有限公司 | Car frame adjusting tool |
| CN208409643U (en) * | 2018-04-11 | 2019-01-22 | 明阳智慧能源集团股份公司 | A kind of wind driven generation set main shaft bearing (ball) cover centering tooling |
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| Publication number | Publication date |
|---|---|
| CN108581874A (en) | 2018-09-28 |
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