CN110919617A - Hydropower station main shaft overturning maintenance platform and working method thereof - Google Patents
Hydropower station main shaft overturning maintenance platform and working method thereof Download PDFInfo
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- CN110919617A CN110919617A CN201911203415.8A CN201911203415A CN110919617A CN 110919617 A CN110919617 A CN 110919617A CN 201911203415 A CN201911203415 A CN 201911203415A CN 110919617 A CN110919617 A CN 110919617A
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- transverse
- pedal
- shaft
- main shaft
- overturning
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
- B25H5/00—Tool, instrument or work supports or storage means used in association with vehicles; Workers' supports, e.g. mechanics' creepers
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- Mechanical Engineering (AREA)
- Hydraulic Turbines (AREA)
Abstract
The invention relates to a hydropower station main shaft overturning maintenance platform which comprises a plurality of overturning pedals which are circumferentially and uniformly distributed between a main shaft and a thrust bracket of a water turbine generator set, wherein adjacent overturning pedals in a horizontal state are mutually connected into a whole. The hydropower station main shaft overturning maintenance platform is simple in structure.
Description
Technical Field
The invention relates to a hydropower station main shaft overturning maintenance platform and a working method thereof.
Background
The axis measurement and adjustment of the hydroelectric generating set are important processes in the maintenance of the hydroelectric generating set. The quality of the axis adjustment quality of the unit directly influences the swing degree and vibration of the unit during operation, thereby influencing the safe and stable operation of the unit.
The barring is an important link for adjusting the axis of the unit, and the accuracy of the swing value measured by the barring directly influences the quality of the axis adjustment. The method is characterized in that a temporary guide bush is required to hold a main shaft tightly before a machine set barring, the guide bush is only installed when the barring and a machine set axis pushing center are overhauled, the guide bush is not installed when the machine set runs, so the guide bush is called a false bush, the false bush is placed on a false bush frame fixedly connected with a machine set fixing part pushing support, and the main shaft is tightly jacked by the false bush from four directions (+/-X +/-Y of the machine set) forming 90 degrees with each other by adjusting a support bolt behind the false bush so as to limit the displacement of the main shaft in each direction when the barring rotates. If the main shaft is not tightly held, the unit generates larger radial displacement in the turning process, so that the pendulum values measured by each part of the unit change in a jumping manner, and the accuracy of the pendulum values is influenced; if the displacement is large, it may even cause the rotating part of the machine set to collide with the fixed part. Therefore, the installation quality of the false tiles in the overhauling process directly influences the superiority and inferiority of the adjustment quality of the axis of the unit.
Need use the maintenance platform at the maintenance in-process, the plank is set up for simply setting up between hydroelectric set's main shaft and thrust support to traditional maintenance platform, and the plank of setting up takes place to slide easily to lead to personnel and multiplexer utensil to fall, there is danger.
Based on above circumstances, develop the main shaft upset of a security, high efficiency and convenience and overhaul the platform, can improve and overhaul the operation security, the operation environment of safety can let the operation personnel more be absorbed in the maintenance quality when the false tile is held tightly simultaneously to improve the quality of axis adjustment, guarantee the maintenance quality, ensure that the unit can the safety and stability operation after overhauing.
Disclosure of Invention
In view of the defects of the prior art, the invention aims to provide a hydropower station main shaft overturning maintenance platform and a working method thereof, which are simple in structure, convenient and efficient.
In order to solve the technical problems, the technical scheme of the invention is as follows: a main shaft overturning maintenance platform for a hydropower station comprises a plurality of overturning pedals which are uniformly distributed between a main shaft and a thrust support of a hydroelectric generating set in a circumferential manner, and adjacent overturning pedals in a horizontal state are mutually connected into a whole.
Preferably, the turnover pedal comprises a T-shaped transverse and vertical rotating shaft and a foot tread, the vertical shaft of the transverse and vertical rotating shaft is hinged to the inner wall of the thrust support through a bearing and overturned along the vertical shaft, and the lower surface of the foot tread is hinged to the transverse shaft of the transverse and vertical rotating shaft through a bearing and overturned along the transverse shaft.
Preferably, the transverse shaft and the pedal surface of the transverse and vertical rotating shaft are both provided with pin holes, the pedal surface pin hole turned to the horizontal state and the transverse shaft pin hole coaxially correspond to each other and are inserted and positioned through the vertically penetrating bolt, and the large end of the bolt faces upwards.
Preferably, the lower surface of the pedal surface is fixedly provided with a square steel tube reinforcing rib.
Preferably, the tread surface is made of a pattern steel plate.
Preferably, the foot tread surfaces are all isosceles trapezoids in shape, and the waist parts of the adjacent foot tread surfaces are connected to form an integral horizontal polygonal annular structure.
Preferably, the edges of the upper surface of the pedal surface, which are close to the main shaft and the inner wall of the thrust support, are fixedly provided with surrounding edges.
Preferably, one waist of each pedal surface is fixedly provided with a connecting extending edge which is used for being abutted against the upper surface of the next pedal surface.
Preferably, the connecting extending edge and the foot tread surface which is leaned against are screwed tightly through screws.
A working method of a hydropower station main shaft overturning maintenance platform is carried out according to the following steps: (1) when the pedal is not used, the pedal surface is turned to be vertical along the transverse shaft of the transverse and vertical rotating shaft, and the whole pedal is turned over along the vertical shaft of the transverse and vertical rotating shaft and leans against the inner wall of the thrust support and is stored in a tangential state; (2) when the pedal type maintenance platform is used, the whole pedal surfaces turn over along the vertical shaft of the transverse and vertical rotating shaft to be unfolded in a radial state, the pedal surfaces turn over to be horizontal along the transverse shaft of the transverse and vertical rotating shaft, adjacent turning pedals in the horizontal state are mutually connected into a whole, the connecting extending edge of the previous pedal surface is abutted against the upper surface of the next pedal surface, the connecting extending edge and the abutted pedal surface are screwed through screws to form the integral annular maintenance platform, and a worker can stand on the connecting extending edge to perform maintenance operation.
Compared with the prior art, the invention has the following beneficial effects: this power station main shaft upset is overhauld platform's simple structure overhauls the platform upset and packs up when not using, overhauls the platform upset and expandes during the use, convenient to use, safety and stability.
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Drawings
FIG. 1 is a top view of an embodiment of the present invention in use.
FIG. 2 is an unused top view of an embodiment of the present invention.
Fig. 3 is a schematic diagram of the direction a-a in fig. 1.
FIG. 4 is a schematic view of the engagement between adjacent treads.
Fig. 5 is a schematic view of the construction of a single flipping pedal.
Detailed Description
In order to make the aforementioned and other features and advantages of the invention more comprehensible, embodiments accompanied with figures are described in detail below.
As shown in figures 1-5, the hydropower station main shaft overturning maintenance platform comprises a plurality of overturning pedals which are circumferentially and uniformly distributed between a main shaft 1 and a thrust support 2 of a hydroelectric generating set, and adjacent overturning pedals in a horizontal state are mutually connected into a whole.
In the embodiment of the invention, the turnover pedals respectively comprise a T-shaped transverse and vertical rotating shaft 3 and a pedal surface 4, the vertical shafts 5 of the transverse and vertical rotating shaft are hinged on the inner wall of the thrust bracket through bearings 6 and turn along the vertical shafts, and the lower surfaces of the pedal surfaces are hinged on the transverse shafts 7 of the transverse and vertical rotating shaft through bearings and turn along the transverse shafts.
In the embodiment of the invention, pin holes are formed on the transverse shaft and the pedal surface of the transverse and vertical rotating shaft, the pin hole of the pedal surface turned to the horizontal state and the pin hole of the transverse shaft coaxially correspond and are penetrated and positioned by the vertically penetrated bolt 8, and the big end of the bolt is upward to avoid falling down.
In the embodiment of the invention, a square steel tube reinforcing rib 9 is fixedly arranged on the lower surface of the pedal surface.
In the embodiment of the invention, the tread surface adopts a pattern steel plate.
In the embodiment of the invention, the foot tread surfaces are all in an isosceles trapezoid shape, and the waist parts of the adjacent foot tread surfaces are connected into an integral horizontal polygonal annular structure.
In the embodiment of the invention, the edges of the upper surface of the pedal surface, which are close to the main shaft and the inner wall of the thrust bracket, are fixedly provided with the surrounding edges 10 to prevent articles from falling.
In the embodiment of the invention, one waist part of each pedal surface is fixedly provided with a connecting extending edge 11 which is used for leaning against the upper surface of the next pedal surface.
In the embodiment of the invention, the connecting flange and the foot tread surface are screwed by the screw 12.
A working method of a hydropower station main shaft overturning maintenance platform is carried out according to the following steps: (1) when the pedal is not used, the pedal surface is turned to be vertical along the transverse shaft of the transverse and vertical rotating shaft, and the whole pedal is turned over along the vertical shaft of the transverse and vertical rotating shaft and leans against the inner wall of the thrust support and is stored in a tangential state; (2) when the pedal type maintenance platform is used, the whole pedal surfaces turn over along the vertical shaft of the transverse and vertical rotating shaft to be unfolded in a radial state, the pedal surfaces turn over to be horizontal along the transverse shaft of the transverse and vertical rotating shaft, adjacent turning pedals in the horizontal state are mutually connected into a whole, the connecting extending edge of the previous pedal surface is abutted against the upper surface of the next pedal surface, the connecting extending edge and the abutted pedal surface are screwed through screws to form the integral annular maintenance platform, and a worker can stand on the connecting extending edge to perform maintenance operation.
The invention is not limited to the best embodiment, and other hydropower station main shaft overturning maintenance platforms in various forms and working methods thereof can be obtained by anyone under the teaching of the invention. All equivalent changes and modifications made according to the claims of the present invention should be covered by the present invention.
Claims (10)
1. The utility model provides a platform is overhauld in upset of power station main shaft which characterized in that: the overturning mechanism comprises a plurality of overturning pedals which are circumferentially and uniformly distributed between a main shaft and a thrust support of the water turbine generator set, and adjacent overturning pedals in a horizontal state are mutually connected into a whole.
2. The hydropower station main shaft overturning and overhauling platform of claim 1, wherein: the turnover pedal comprises a T-shaped transverse and vertical rotating shaft and a foot tread, the vertical shaft of the transverse and vertical rotating shaft is hinged to the inner wall of the thrust support through a bearing and overturned along the vertical shaft, and the lower surface of the foot tread is hinged to the transverse shaft of the transverse and vertical rotating shaft through a bearing and overturned along the transverse shaft.
3. The hydropower station main shaft overturning and overhauling platform of claim 2, wherein: the transverse shaft and the pedal surface of the transverse and vertical rotating shaft are both provided with pin holes, the pedal surface pin hole which is turned to the horizontal state and the transverse shaft pin hole are coaxially corresponding and are both penetrated and positioned by the vertically penetrated bolt, and the big end of the bolt faces upwards.
4. The hydropower station main shaft overturning and overhauling platform of claim 2, wherein: the lower surface of the pedal surface is fixedly provided with a square steel pipe reinforcing rib.
5. The hydropower station main shaft overturning and overhauling platform of claim 2, wherein: the tread surface adopts a pattern steel plate.
6. The hydropower station main shaft overturning and overhauling platform of claim 2, wherein: the shapes of the foot tread surfaces are isosceles trapezoids, and the waist parts of the adjacent foot tread surfaces are connected to form an integral horizontal polygonal annular structure.
7. The hydropower station main shaft overturning and overhauling platform of claim 2, wherein: the edges of the upper surface of the pedal surface, which are close to the main shaft and the inner wall of the thrust support, are fixedly provided with surrounding edges.
8. The hydropower station main shaft overturning and overhauling platform of claim 2, wherein: one waist of each pedal surface is fixedly provided with a connecting extending edge which is used for leaning against the upper surface of the next pedal surface.
9. The hydropower station main shaft overturning and overhauling platform of claim 8, wherein: the connecting extending edge and the foot tread surface are screwed by screws.
10. A method of operating a hydroelectric power station mast upset service platform according to any of claims 1 to 9, comprising the steps of: (1) when the pedal is not used, the pedal surface is turned to be vertical along the transverse shaft of the transverse and vertical rotating shaft, and the whole pedal is turned over along the vertical shaft of the transverse and vertical rotating shaft and leans against the inner wall of the thrust support and is stored in a tangential state; (2) when the pedal type maintenance platform is used, the whole pedal surfaces turn over along the vertical shaft of the transverse and vertical rotating shaft to be unfolded in a radial state, the pedal surfaces turn over to be horizontal along the transverse shaft of the transverse and vertical rotating shaft, adjacent turning pedals in the horizontal state are mutually connected into a whole, the connecting extending edge of the previous pedal surface is abutted against the upper surface of the next pedal surface, the connecting extending edge and the abutted pedal surface are screwed through screws to form the integral annular maintenance platform, and a worker can stand on the connecting extending edge to perform maintenance operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911203415.8A CN110919617B (en) | 2019-11-29 | 2019-11-29 | Hydropower station main shaft overturning maintenance platform and working method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911203415.8A CN110919617B (en) | 2019-11-29 | 2019-11-29 | Hydropower station main shaft overturning maintenance platform and working method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110919617A true CN110919617A (en) | 2020-03-27 |
| CN110919617B CN110919617B (en) | 2022-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911203415.8A Active CN110919617B (en) | 2019-11-29 | 2019-11-29 | Hydropower station main shaft overturning maintenance platform and working method thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204235099U (en) * | 2014-11-18 | 2015-04-01 | 中国葛洲坝集团股份有限公司 | Hydraulic turbine connecting shaft bolt disassembly platform frock |
| CN104989090A (en) * | 2015-05-15 | 2015-10-21 | 国家电网公司 | Assembled aluminium alloy scaffold maintenance platform used for hydropower station unit |
| US20160113392A1 (en) * | 2014-10-28 | 2016-04-28 | Eredu, S. Coop. | Demountable bracket, tablet-desk holder on seats |
| CN205802720U (en) * | 2016-07-14 | 2016-12-14 | 三一重型能源装备有限公司 | Hoistable platform and the tower with this hoistable platform |
| CN206510011U (en) * | 2017-02-18 | 2017-09-22 | 中铁华铁工程设计集团有限公司 | Turnover plate type is anti-to step on working platform |
| CN208329748U (en) * | 2018-06-15 | 2019-01-04 | 中国葛洲坝集团机电建设有限公司 | The overhaul of the equipments platform easily assembled and disassembled in the water wheel chamber of power station |
-
2019
- 2019-11-29 CN CN201911203415.8A patent/CN110919617B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160113392A1 (en) * | 2014-10-28 | 2016-04-28 | Eredu, S. Coop. | Demountable bracket, tablet-desk holder on seats |
| CN204235099U (en) * | 2014-11-18 | 2015-04-01 | 中国葛洲坝集团股份有限公司 | Hydraulic turbine connecting shaft bolt disassembly platform frock |
| CN104989090A (en) * | 2015-05-15 | 2015-10-21 | 国家电网公司 | Assembled aluminium alloy scaffold maintenance platform used for hydropower station unit |
| CN205802720U (en) * | 2016-07-14 | 2016-12-14 | 三一重型能源装备有限公司 | Hoistable platform and the tower with this hoistable platform |
| CN206510011U (en) * | 2017-02-18 | 2017-09-22 | 中铁华铁工程设计集团有限公司 | Turnover plate type is anti-to step on working platform |
| CN208329748U (en) * | 2018-06-15 | 2019-01-04 | 中国葛洲坝集团机电建设有限公司 | The overhaul of the equipments platform easily assembled and disassembled in the water wheel chamber of power station |
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| Publication number | Publication date |
|---|---|
| CN110919617B (en) | 2022-05-13 |
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