CN110550537A - Large-scale thermal power factory overhauls generator axle bush tile turning tool - Google Patents
Large-scale thermal power factory overhauls generator axle bush tile turning tool Download PDFInfo
- Publication number
- CN110550537A CN110550537A CN201910796566.2A CN201910796566A CN110550537A CN 110550537 A CN110550537 A CN 110550537A CN 201910796566 A CN201910796566 A CN 201910796566A CN 110550537 A CN110550537 A CN 110550537A
- Authority
- CN
- China
- Prior art keywords
- bearing
- turning tool
- thermal power
- tile
- frame
- 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
- 230000007306 turnover Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 12
- 238000012423 maintenance Methods 0.000 abstract description 7
- 229910000831 Steel Inorganic materials 0.000 abstract description 5
- 239000010959 steel Substances 0.000 abstract description 5
- 238000005299 abrasion Methods 0.000 abstract description 4
- 238000005096 rolling process Methods 0.000 abstract 1
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
- B66C13/08—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention discloses a bearing bush turning tool for overhauling a generator in a large-scale thermal power plant, which is special overhauling equipment used in the overhauling work of a steam turbine-generator in the large-scale thermal power plant. The tile turning tool comprises a semicircular frame, three groups of bearings and the like, wherein the semicircular frame is fixed with a lower half bearing bush, and the bearing bush is turned out by virtue of three groups of rolling bearings. The tile turning tool can greatly improve the maintenance quality, is more rapid and efficient, shortens the maintenance period, lightens the labor intensity of workers, thoroughly eliminates the traditional method for lifting and turning the lower half tile block of the generator bearing by using a steel wire rope, greatly improves the safety in maintenance work, and avoids the abrasion to the bearing bush in the process of turning the bearing tile block.
Description
The technical field is as follows:
The invention relates to the field of equipment maintenance of thermal power plants, in particular to a bearing bush turning tool for a generator during maintenance of a large-scale thermal power plant.
Background art:
a common bearing bush turning method for a power plant at present comprises the steps of preparing hydraulic oil jacking and shaft lifting tools, setting two sets of dial indicators and other tools, erecting the hydraulic oil jacking and the dial indicators, jacking a large shaft by 0.50mm, seeing the left-right deviation of a rotor, using a hanging belt to firmly tie the left side (turned-out side of the bearing bush) of the bearing bush to start turning, uniformly pulling up the bearing bush to the right, gradually turning out the lower half bearing bush, preparing a small thin wood plate, turning the bearing bush up from the left, and preventing the bearing bush from sliding down from the right on the right of a wood plate pad.
The bearing bush turning method has many defects and inconveniences in safety and feasibility:
1. Because the generator bearing bush is arranged in the large end cover of the generator, the steel wire rope or the sling cannot vertically penetrate through the hole of the large end cover and directly reach the lifting lug on one side of the bearing bush, and the steel wire rope or the sling cannot pull the bearing bush to turn out along the designated direction.
2. In the actual work of scene, because of big end cover top hole restriction, wire rope or suspender can only be ligatured in axle bush one side by the outdoor lug of bearing, and the single-point atress can't be stable, and the axle bush turns over the in-process, can't guarantee the unilateral even atress around of axle bush, and the axle bush can take place the front and back slope in the bearing room, makes axle bush and tile seat or rotor take place the friction, leads to axle bush wujin face to damage.
3. In the process of turning the bearing bush out, because the bearing bush is stressed on the single side, the single side of the bearing bush can be clamped between the bush seat and the rotor, the friction force is increased, the overhauling difficulty is improved, and the bearing bush can be abraded due to forced turning. In the process of overhauling the bearing bush, the bearing bush is turned out and turned in, the phenomenon of reworking due to the abrasion of the bearing bush can occur for many times, and the bearing bush is greatly damaged.
The work is carried out inside the large end cover of the generator, the space is narrow, the operation is more difficult, and the overhaul period is influenced.
The invention content is as follows:
The technical problems of the invention are as follows: in the process of overhauling a power generator during shutdown of a power plant, tile turning is a difficult work, particularly minor repair, because a main shaft can only be hoisted for a small distance, workpieces are heavy, the working place is narrow, and especially in the traditional method, a sling or a steel wire rope is used for turning a bearing bush out of a bearing bush socket, the operation is more difficult, the main shaft or the bearing bush is easily damaged, and secondary damage is caused.
The invention aims to overcome the problems and provides a tool for overhauling the bearing bush turning-over of the generator in a large thermal power plant, which can be quickly and effectively turned out or turned into the bearing bush in a narrow space without abrasion between the bearing bush and a rotor.
in order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:
a large-scale thermal power factory overhauls the bearing bush turning over the bush tool of the generator, including a semicircular frame, three groups of bearings; three groups of bearings are arranged on the semicircular frame; the bearing comprises a roller, a dustproof deep groove ball bearing and a roller shaft; the roller is connected with a roller shaft through a bearing, and two ends of the roller shaft are fixed on the frame through set screws; the center of the roller shaft is fixedly connected to the top of the frame through a nut and a hexagon head bolt; a shaft check ring is arranged between the bearing and the set screw, and a hole check ring is arranged between the roller and the bearing.
according to the further technical scheme, the bottom of the frame is provided with a supporting sleeve for fixing the bottom of the frame through bolts.
According to a further technical scheme, three groups of bearings are uniformly arranged on the semicircular frame.
According to the further technical scheme, a bottom plate is arranged at the bottom of the frame, and ear plates are arranged on the bottom plate; and the ear plate is provided with a hoisting hole.
According to a further technical scheme, the bottom plate is provided with a connecting hole.
after the frame is fixed with the bearing bush, the positions of the three groups of bearings can be adjusted through adjusting nuts and hexagon bolts, so that the bearings on the frame are firmly attached to the rotor.
the tile turning tool comprises:
1. The design is reasonable and compact, the appearance is elegant, the size is small and the weight is light, and the device can be applied to various narrow spaces.
2. The bearing bush is convenient to install, and the bearing bush is fixed on the split surface of the lower half of the original bearing bush and can be installed and fixed by means of bolt holes in the original bearing bush.
3. The operation is simple and flexible, the two ends of the tile turning tool are provided with the hoisting holes, the tile turning tool can be hoisted from any direction according to the actual situation on site, and the adaptability is strong.
4. Three pairs of rollers are installed above the tile turning tool, and after the tile is installed with the lower half part of the tile, the rollers can be adjusted to be attached to a generator rotor, so that the lower half part of the tile is properly lifted, and the tile is prevented from being collided and ground when being turned.
The invention has the beneficial effects that:
1. the tile turning tool is simple and effective to operate, solves the problems of difficult tile turning in small space and the like, can greatly improve the maintenance quality, is more rapid and efficient, shortens the maintenance period and reduces the rework times.
2. compared with the traditional tile turning method, the tile turning tool can effectively avoid the abrasion damage to the bearing black gold or the shaft diameter in the tile turning process.
3. the traditional hanging strip or steel wire rope tile turning has great potential safety hazard, and the safety risk of using the tile turning tool is well controlled.
description of the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view B-B of the present invention;
FIG. 3 is a left side view of the present invention;
fig. 4 is a top view of the present invention.
Wherein: 1. a frame; 2. a roller; 3. a dustproof deep groove ball bearing; 4. a roller shaft; 5. a nut; 6. a hexagon head bolt; 7. slotting a set screw with a cylindrical head; 8. a retainer ring for a shaft; 9. a retainer ring for a bore; 10. a support sleeve; 11. a base plate; 12. an ear plate; 13 hoisting holes; and 14 connecting the holes.
The specific implementation mode is as follows:
The present invention will be further illustrated in conjunction with the attached drawings and detailed description, it being understood that the following detailed description is intended to illustrate the invention only and is not intended to limit the scope of the invention.
Example 1
A large-scale thermal power factory overhauls the bush turning over of the generator, including a semicircular frame 1, there are three groups of bearings on the said semicircular frame; the bearing comprises a roller 2, a dustproof deep groove ball bearing 3 and a roller shaft 4; the roller 2 is connected with a roller shaft 4 through a bearing 3, and two ends of the roller shaft are fixed on the frame through set screws 7; the center of the roller shaft 4 is fixedly connected to the top of the frame through a nut 5 and a hexagon head bolt 6; a shaft check ring 8 is arranged between the bearing and the set screw 7, and a hole check ring is arranged between the roller 2 and the bearing 3.
The bottom of the frame is provided with a support sleeve for fixing the bottom of the frame by bolts.
The bottom of the frame is provided with a bottom plate 11, and the bottom plate is provided with an ear plate 12; and the ear plate is provided with a hoisting hole 13.
The bottom plate is provided with a connecting hole 14.
After the frame is fixed with the bearing bushes, the positions of the three groups of bearings can be adjusted through the adjusting nuts 5 and the hexagonal head bolts 6, so that the bearings on the frame are firmly attached to the rotor.
Example 2
The tile turning tool of example 1 is used according to the following flow:
1. The turning tool is firmly and stably hung to the upper half position of an original generator bearing tile block to be in place, when the turning tool falls down, the connecting hole of the fixing bottom plate is made to correspond to the corresponding screw hole on the lower half split surface of the tile block as far as possible, the random packing piece fixing bolt and the support sleeve are screwed in (note: the fixing bottom plate is not screwed in temporarily), the fixing bottom plate is moved a little to enable the turning tool and the center of the tile block to be basically kept on the same axis, and the fixing bolt is screwed after the position adjustment is completed.
2. And adjusting three pairs of rollers on the tile turning tool to enable the tile turning tool to be tightly attached to the generator rotor, and then, tapping by using a copper bar to check the tight attaching condition of the tile turning tool. After the roller is tightly attached to the rotor, the roller is fastened by a wrench, so that the lower half of the tile is properly lifted, the lifting height of the tile is observed in the process, and the progress of not influencing the turning of the bearing is better when the tile is lifted.
3. After the tile-turning tool is installed and adjusted, the tile-turning tool can be turned over by using a lifting appliance through the left and right reserved lifting holes according to the actual situation on site. After the hole for hoisting on the lower half of the tile is exposed, the lifting hole on the tile is used for fixing the lifting appliance and the lifting appliance on the tile turning tool is removed to continue to drag the tile until the tile is turned over to the upper part of the rotor completely.
The technical means disclosed in the invention scheme are not limited to the technical means disclosed in the above embodiments, but also include the technical scheme formed by any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and such improvements and modifications are also considered to be within the scope of the present invention.
Claims (5)
1. The utility model provides a large-scale thermal power factory overhauls generator axle bush tile turnover instrument which characterized in that: comprises a semicircular frame and three groups of bearings; three groups of bearings are arranged on the semicircular frame; the bearing comprises a roller, a dustproof deep groove ball bearing and a roller shaft; the roller is connected with a roller shaft through a bearing, and two ends of the roller shaft are fixed on the frame through set screws; the center of the roller shaft is fixedly connected to the top of the frame through a nut and a hexagon head bolt; a shaft check ring is arranged between the bearing and the set screw, and a hole check ring is arranged between the roller and the bearing.
2. A large thermal power plant overhaul generator bearing shell tile turning tool as claimed in claim 1, wherein: the bottom of the frame is provided with a supporting sleeve.
3. A large thermal power plant overhaul generator bearing shell tile turning tool as claimed in claim 1, wherein: three groups of bearings are uniformly arranged on the semicircular frame.
4. A large thermal power plant overhaul generator bearing shell tile turning tool as claimed in claim 1, wherein: the bottom of the frame is provided with a bottom plate, and the bottom plate is provided with an ear plate; and the ear plate is provided with a hoisting hole.
5. a large thermal power plant overhaul generator bearing shell tile turning tool as claimed in claim 1, wherein: the bottom plate is provided with a connecting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910796566.2A CN110550537A (en) | 2019-08-27 | 2019-08-27 | Large-scale thermal power factory overhauls generator axle bush tile turning tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910796566.2A CN110550537A (en) | 2019-08-27 | 2019-08-27 | Large-scale thermal power factory overhauls generator axle bush tile turning tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110550537A true CN110550537A (en) | 2019-12-10 |
Family
ID=68736640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910796566.2A Pending CN110550537A (en) | 2019-08-27 | 2019-08-27 | Large-scale thermal power factory overhauls generator axle bush tile turning tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110550537A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE527104A (en) * | ||||
| CN2475505Y (en) * | 2001-04-28 | 2002-02-06 | 桑有富 | Turning-over device for repairing steam turbine |
| CN2483137Y (en) * | 2001-06-24 | 2002-03-27 | 桑有富 | Apparatus for restoring bush for reparing steam turbine |
| CN203474392U (en) * | 2013-09-05 | 2014-03-12 | 鞍钢集团矿业公司 | Steam turbine rotating shaft hydraulic lifting and bush flipping device |
| CN106584347A (en) * | 2016-11-03 | 2017-04-26 | 上海电气电站设备有限公司 | Nuclear power steam-turbine generator bearing bush turnover tool and method |
| CN211521327U (en) * | 2019-08-27 | 2020-09-18 | 华能南京金陵发电有限公司 | Large-scale thermal power factory overhauls generator axle bush tile turning tool |
-
2019
- 2019-08-27 CN CN201910796566.2A patent/CN110550537A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE527104A (en) * | ||||
| CN2475505Y (en) * | 2001-04-28 | 2002-02-06 | 桑有富 | Turning-over device for repairing steam turbine |
| CN2483137Y (en) * | 2001-06-24 | 2002-03-27 | 桑有富 | Apparatus for restoring bush for reparing steam turbine |
| CN203474392U (en) * | 2013-09-05 | 2014-03-12 | 鞍钢集团矿业公司 | Steam turbine rotating shaft hydraulic lifting and bush flipping device |
| CN106584347A (en) * | 2016-11-03 | 2017-04-26 | 上海电气电站设备有限公司 | Nuclear power steam-turbine generator bearing bush turnover tool and method |
| CN211521327U (en) * | 2019-08-27 | 2020-09-18 | 华能南京金陵发电有限公司 | Large-scale thermal power factory overhauls generator axle bush tile turning tool |
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