CN113696097B - Scratch polishing device for shaft neck of steam turbine rotor - Google Patents
Scratch polishing device for shaft neck of steam turbine rotor Download PDFInfo
- Publication number
- CN113696097B CN113696097B CN202110895275.6A CN202110895275A CN113696097B CN 113696097 B CN113696097 B CN 113696097B CN 202110895275 A CN202110895275 A CN 202110895275A CN 113696097 B CN113696097 B CN 113696097B
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- Prior art keywords
- grinding
- sand
- shell
- turbine rotor
- scratch
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- 238000005498 polishing Methods 0.000 title claims abstract description 35
- 239000004576 sand Substances 0.000 claims abstract description 103
- 230000001502 supplementing effect Effects 0.000 claims abstract description 37
- 238000005192 partition Methods 0.000 claims abstract description 24
- 238000003825 pressing Methods 0.000 claims description 29
- 238000002347 injection Methods 0.000 claims description 14
- 239000007924 injection Substances 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 13
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 8
- 230000000295 complement effect Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 239000004744 fabric Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/04—Headstocks; Working-spindles; Features relating thereto
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
Abstract
The application relates to a scratch polishing device for a shaft neck of a steam turbine rotor, which comprises an upper semicircular component and a lower semicircular component, wherein the semicircular component comprises a shell and a polishing frame, and a plurality of rotating handles are arranged on the shell; the grinding frame is internally provided with grinding blocks positioned between the axial partition boards at intervals, a grinding sand cavity is formed between two adjacent grinding blocks, the shell is provided with a sand supplementing opening corresponding to the grinding sand cavity, and the sand supplementing opening is provided with a sand supplementing device. According to the grinding device, the semicircular shell and the grinding frame are arranged, the grinding block installation cavity and the grinding sand cavity which are arranged at intervals are formed between the axial partition plates of the grinding frame, the grinding blocks which are arranged between the two axial partition plates are arranged in the grinding block installation cavity, and the grinding sand can be injected into the grinding sand cavity through the sand supplementing opening, so that the surface of the journal is ground through the grinding blocks with fixed forms and the grinding sand with indefinite forms, the grinding efficiency can be remarkably improved, and the grinding consistency of the surface of the journal is ensured.
Description
Technical Field
The application relates to a steam turbine maintenance technology, in particular to a scratch polishing device for a shaft neck of a steam turbine rotor.
Background
After a steam turbine of a power plant works for a long time, the roundness of the surface of a rotor journal is reduced due to abrasion and erosion, so that the rotor has poor operation, and the surface of the rotor journal needs to be repaired and ground; at present, the journal of the steam turbine rotor is overhauled, and for serious scratches, repair welding, manual electric grinding or angle grinding polishing, manual grinding and other modes are usually adopted for overhauling; for slight scratches, the scratches can be treated by simple grinding; as disclosed in chinese patent publication No. CN212665730U, "a manual grinding device for repairing a rotor journal", the grinding cylinder is a cylinder, the cylinder of the grinding cylinder is composed of two semi-cylinders, two sides of the two semi-cylinders are respectively connected with opposite flange plates, corresponding bolt holes are respectively formed on the flange plates, the two semi-cylinders are connected into a whole by fixing bolts passing through the bolt holes, a plurality of rotating handles are respectively welded on the outer peripheral surfaces of the two semi-cylinders, the length direction of the rotating handles is along the diameter of the semi-cylinders, the rotating handles are perpendicular to the peripheral surfaces of the semi-cylinders, a felt and a abrasive cloth with uniform thickness are placed between the inner wall of the grinding cylinder and the rotor journal, and the abrasive surface of the abrasive cloth is contacted with the surface of the rotor journal; the method can grind the scratched rotor shaft neck, saves maintenance time and improves maintenance quality and working efficiency. However, the manual grinding device disclosed in this document still has problems of low grinding efficiency and poor consistency of grinding of the journal surface, and improvement is still needed.
Disclosure of Invention
The application aims to provide a scratch polishing device for a shaft neck of a steam turbine rotor, which is used for solving the problems of low polishing efficiency and poor consistency of the conventional manual polishing device.
In order to solve the problems, the application provides a scratch polishing device for a shaft neck of a steam turbine rotor, which comprises an upper semicircular component and a lower semicircular component, wherein the semicircular component comprises a shell and a polishing frame, the shell and the polishing frame are semi-cylindrical, the polishing frame is fixedly arranged on the annular inner wall of the shell, and a plurality of rotating handles are arranged on the outer wall of the shell; the grinding frame comprises two annular end face baffles, two ends of each end face baffle are fixedly connected through an axial connecting plate, a plurality of axial partition plates are arranged between the two end face baffles, and the outer edges of the axial connecting plates and the axial partition plates are flush with the outer edges of the end face baffles; the thickness of the axial connecting plate and the axial partition plate along the radial direction of the grinding frame is smaller than the thickness of the end face baffle along the radial direction of the grinding frame; the grinding device comprises a grinding frame, wherein grinding blocks positioned between axial partition plates are arranged in the grinding frame at intervals, a grinding sand cavity is formed between two adjacent grinding blocks, a sand supplementing opening corresponding to the grinding sand cavity is formed in a shell, a sand supplementing device is arranged at the sand supplementing opening, and the sand supplementing device is used for filling grinding sand into the grinding sand cavity through the sand supplementing opening.
The scratch polishing device for the steam turbine rotor shaft journal provided by the application has the following technical characteristics:
further, the axial baffles are uniformly and obliquely arranged between the end baffles.
Further, the grinding block includes a first grinding portion located between the two axial bulkheads, and two second grinding portions extending to the radially inner edges of the axial bulkheads.
Further, the sand supplementing device comprises a cylindrical sand supplementing tank, a sand injection port connected with the sand supplementing port is arranged at the lower end of the sand supplementing tank, a pressing plate is arranged in the sand supplementing tank, a pressing device positioned at the upper side of the pressing plate is further arranged in the sand supplementing tank, and the pressing device downwards presses the pressing plate to enable grinding sand at the lower side of the pressing plate to flow out through the sand injection port.
Further, a plurality of guide posts are arranged on the upper side of the pressing plate, the pressing device comprises an adjusting plate, an adjusting screw and an adjusting seat, the adjusting seat is fixedly arranged on the upper edge of the sand supplementing tank, a threaded hole is formed in the middle of the adjusting seat, and the adjusting screw penetrates through the threaded hole; the adjusting plate is provided with a guide hole matched with the guide post, the guide post is arranged in the guide hole in a penetrating way, and the guide post is also sleeved with a pressure spring positioned between the pressing plate and the adjusting plate; the upper side of regulating plate is equipped with the connecting seat, adjusting screw's lower extreme through the connecting seat with the regulating plate is connected and can rotate relatively the regulating plate.
Further, the lower side of the sand supplementing tank is also provided with a conical sand guiding part.
Further, the rotating handle corresponds to the grinding block, the bottom end of the rotating handle is provided with a liquid injection hole communicated with the inner side of the shell, the shell is further provided with a pressure tank communicated with the liquid injection hole, and grinding liquid is stored in the pressure tank.
Further, the pressure tank is a diaphragm pressure tank or an air bag pressure tank, and an arc-shaped connecting plate is arranged at the bottom of the pressure tank.
Further, the two sides of the shell are also provided with connecting lug plates, a plurality of connecting holes are formed in the connecting lug plates, and the upper semicircular assembly and the lower semicircular assembly are fixedly connected through bolts.
The application has the following beneficial effects: according to the grinding device, the semicircular shell and the grinding frame are arranged, the grinding block installation cavity and the grinding sand cavity which are arranged at intervals are formed between the axial partition plates of the grinding frame, the grinding blocks which are arranged between the two axial partition plates are arranged in the grinding block installation cavity, and the grinding sand can be injected into the grinding sand cavity through the sand supplementing opening, so that the surface of the journal is ground through the grinding blocks with fixed forms and the grinding sand with indefinite forms, the grinding efficiency can be remarkably improved, and the grinding consistency of the surface of the journal is ensured.
Drawings
FIG. 1 is a schematic view of a steam turbine rotor journal scratch grinding device according to an embodiment of the present application;
FIG. 2 is a front view of the steam turbine rotor journal scratch pad device of FIG. 1;
FIG. 3 is a schematic view showing a state of use of the steam turbine rotor journal scratch grinding device according to the embodiment of the present application;
FIG. 4 is an enlarged view of a portion A of FIG. 3;
FIG. 5 is a schematic view of a semi-circular assembly according to an embodiment of the present application;
FIG. 6 is a schematic view of the semi-circular assembly of FIG. 5 from another perspective;
FIG. 7 is a bottom view of the semi-circle assembly of FIG. 5;
FIG. 8 is a schematic view of the structure of the housing in an embodiment of the application;
FIG. 9 is a schematic view of a polishing frame according to an embodiment of the present application;
FIG. 10 is a schematic view of an embodiment of a polishing frame according to another aspect of the present application;
FIG. 11 is a schematic diagram of a sand filling device according to an embodiment of the present application;
fig. 12 is a schematic structural view of a pressure tank in an embodiment of the present application.
Detailed Description
The application will be described in detail hereinafter with reference to the drawings in conjunction with embodiments. It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other.
In the embodiment of the steam turbine rotor shaft neck scratch polishing device of the present application shown in fig. 1 to 12, the steam turbine rotor shaft neck scratch polishing device comprises an upper semicircular component and a lower semicircular component, and is characterized in that the semicircular component comprises a shell 10 and a polishing frame 20, the shell 10 and the polishing frame 20 are in a semicircular cylinder shape, the polishing frame 20 is fixedly arranged on the annular inner wall of the shell 10, and a plurality of rotating handles 30 are arranged on the outer wall of the shell 10; the grinding frame 20 comprises two annular end face baffles 21, two ends of the two end face baffles 21 are fixedly connected through an axial connecting plate 22 respectively, a plurality of axial separation plates 23 are arranged between the two end face baffles 21, and the outer edges of the axial connecting plate 22 and the axial separation plates 23 are flush with the outer edges of the end face baffles 21; the thickness of the axial connecting plate 22 and the axial partition 23 along the radial direction of the grinding frame 20 is smaller than the thickness of the end face baffle 21 along the radial direction of the grinding frame 20, so that the axial connecting plate 22 and the axial partition 23 are not contacted with the journal 100 after the two semicircular components are spliced; the grinding frame 20 is internally provided with grinding blocks 40 between the axial partition plates 23 at intervals, a grinding sand cavity 201 is formed between two adjacent grinding blocks 40, a sand supplementing opening 101 corresponding to the grinding sand cavity 201 is arranged on the shell 10, the sand supplementing opening 101 is provided with a sand supplementing device 50, and the sand supplementing device 50 is used for filling grinding sand 202 into the grinding sand cavity 201 through the sand supplementing opening 101. When the scratch polishing device for the turbine rotor shaft neck is used, the polishing blocks are firstly arranged in the polishing block mounting cavity between the axial partition plates of the polishing frame, then the upper semicircular assembly and the lower semicircular assembly are connected through bolts and tightly hold the shaft neck, then the polishing sand cavities are filled with polishing sand through the sand filling openings and the sand filling openings are blocked, and therefore the scratch polishing device for the turbine rotor shaft neck can be driven to rotate through the rotating handle to polish the shaft neck.
According to the application, the semicircular shell and the grinding frame are arranged, the grinding block installation cavity and the grinding sand cavity which are arranged at intervals are formed between the axial partition plates of the grinding frame, the grinding blocks positioned between the two axial partition plates are arranged in the grinding block installation cavity, grinding sand can be injected into the grinding sand cavity through the sand supplementing opening, and the grinding blocks and the grinding sand can be selected according to the requirement, so that the grinding block with a fixed form and the grinding sand with an indefinite form can grind the surface of the journal, the grinding efficiency can be remarkably improved, and the grinding consistency of the surface of the journal can be ensured.
In one embodiment of the present application, the axial bulkheads 23 are preferably uniformly and obliquely arranged between the end baffles 21, specifically, as shown in fig. 9 and 10, the succession of both ends of the axial bulkheads 23 is not parallel to the axis of the grinding frame 20, thereby improving the heat distribution generated by grinding during grinding and improving the uniformity of grinding of the journal surface.
In one embodiment of the present application, it is preferable that the grinding block 40 includes a first grinding portion 41 located between the two axial partitions 23, and two second grinding portions 42 extending to the radially inner edges of the axial partitions 23, whereby a grinding sand chamber 201 is formed by the axial partitions 23, the second grinding portions 42, the housing 10, and the journal 100 is sufficiently wrapped by the grinding block 40, the grinding sand 202 to grind the surface of the journal 100.
In one embodiment of the present application, it is preferable that the sand complement device 50 comprises a cylindrical sand complement tank 51, a sand injection port 52 connected with the sand complement port 101 is provided at the lower end of the sand complement tank 51, a pressing plate 53 is installed in the sand complement tank 51, a pressing device positioned at the upper side of the pressing plate 53 is further provided in the sand complement tank 51, the pressing device presses the pressing plate 53 downwards so that the grinding sand 202 at the lower side of the pressing plate 53 flows out through the sand injection port 52, and the grinding sand cavity 201 is filled with the grinding sand 202 through the sand complement device. Specifically, in this embodiment, by setting the pressing device located on the upper side of the pressing plate, the sand filling opening can be plugged after the grinding sand cavity 201 is filled with the grinding sand 202, and the pressing device can continuously supplement the grinding sand to the grinding sand cavity through the sand filling opening in the grinding process.
In one embodiment of the present application, preferably, a plurality of guide posts 531 are provided on the upper side of the pressing plate 53, the pressing device includes an adjusting plate 54, an adjusting screw 55 and an adjusting seat 56, the adjusting seat 56 is installed and fixed on the upper edge of the sand compensating tank 51, a threaded hole is provided in the middle of the adjusting seat 56, and the adjusting screw 55 is penetrated in the threaded hole; the adjusting plate 54 is provided with a guide hole matched with the guide column 531, the guide column 531 is penetrated in the guide hole, and the guide column 531 is also sleeved with a pressure spring 532 positioned between the pressure plate 53 and the adjusting plate 54; the upper side of the adjusting plate 54 is provided with a connecting seat 541, and the lower end of the adjusting screw 55 is connected with the adjusting plate 54 through the connecting seat 541 and can rotate relative to the adjusting plate 54; the platen 53 is thereby pressed downwardly by rotating the adjusting screw 55 so that the abrasive grit is fully contacted with the journal surface during the abrading process; the pressure between the grinding sand and the journal surface can also be conveniently adjusted to adjust the grinding pattern. Preferably, the lower side of the sand complement tank 51 is further provided with a tapered sand guide 511, thereby ensuring that the abrasive sand reliably flows toward the sand injection port.
In one embodiment of the present application, preferably, the rotating handle 30 is disposed corresponding to the grinding block 40, and the bottom end of the rotating handle 30 is provided with a liquid injection hole 31 communicating with the inner side of the housing 10, and the housing 10 is further provided with a pressure tank 32 communicating with the liquid injection hole 31, and the pressure tank 32 stores grinding liquid therein, so that the grinding liquid can be supplemented into the grinding frame 20 to protect the journal during the grinding process. Preferably, the pressure tank 32 is a diaphragm pressure tank or a balloon pressure tank, whereby the polishing frame can be continuously replenished with polishing liquid during polishing; preferably, the bottom of the pressure tank 32 is provided with an arc-shaped connection plate 33 to facilitate the installation and fixation of the pressure tank.
In one embodiment of the present application, preferably, two sides of the housing 10 are further provided with a connection lug plate 11, a plurality of connection holes 12 are formed in the connection lug plate 11, and the upper semicircular assembly and the lower semicircular assembly are fixedly connected through bolts; thereby facilitating the installation and the disassembly.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and are not limiting; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims (9)
1. The scratch polishing device for the shaft neck of the steam turbine rotor comprises an upper semicircular component and a lower semicircular component and is characterized in that the semicircular component comprises a shell and a polishing frame, the shell and the polishing frame are semi-cylindrical, the polishing frame is fixedly arranged on the annular inner wall of the shell, and a plurality of rotating handles are arranged on the outer wall of the shell; the grinding frame comprises two annular end face baffles, two ends of each end face baffle are fixedly connected through an axial connecting plate, a plurality of axial partition plates are arranged between the two end face baffles, and the outer edges of the axial connecting plates and the axial partition plates are flush with the outer edges of the end face baffles; the thickness of the axial connecting plate and the axial partition plate along the radial direction of the grinding frame is smaller than the thickness of the end face baffle along the radial direction of the grinding frame; the grinding device comprises a grinding frame, wherein grinding blocks positioned between axial partition plates are arranged in the grinding frame at intervals, a grinding sand cavity is formed between two adjacent grinding blocks, a sand supplementing opening corresponding to the grinding sand cavity is formed in a shell, a sand supplementing device is arranged at the sand supplementing opening, and the sand supplementing device is used for filling grinding sand into the grinding sand cavity through the sand supplementing opening.
2. The turbine rotor journal scratch grinding device of claim 1, wherein: the axial baffles are uniformly and obliquely arranged between the end baffles.
3. The turbine rotor journal scratch grinding device of claim 1, wherein: the grinding block comprises a first grinding part positioned between the two axial partition plates and two second grinding parts extending to the radial inner edges of the axial partition plates.
4. The turbine rotor journal scratch grinding device of claim 1, wherein: the sand supplementing device comprises a cylindrical sand supplementing tank, a sand injection port connected with the sand supplementing port is arranged at the lower end of the sand supplementing tank, a pressing plate is arranged in the sand supplementing tank, a pressing device positioned on the upper side of the pressing plate is further arranged in the sand supplementing tank, and the pressing device presses the pressing plate downwards to enable grinding sand on the lower side of the pressing plate to flow out through the sand injection port.
5. The turbine rotor journal scratch grinding device of claim 4, wherein: the upper side of the pressing plate is provided with a plurality of guide posts, the pressing device comprises an adjusting plate, an adjusting screw and an adjusting seat, the adjusting seat is fixedly arranged on the upper edge of the sand supplementing tank, the middle part of the adjusting seat is provided with a threaded hole, and the adjusting screw is arranged in the threaded hole in a penetrating way; the adjusting plate is provided with a guide hole matched with the guide post, the guide post is arranged in the guide hole in a penetrating way, and the guide post is also sleeved with a pressure spring positioned between the pressing plate and the adjusting plate; the upper side of regulating plate is equipped with the connecting seat, adjusting screw's lower extreme through the connecting seat with the regulating plate is connected and can rotate relatively the regulating plate.
6. The turbine rotor journal scratch grinding device of claim 4, wherein: the lower side of the sand supplementing tank is also provided with a conical sand guiding part.
7. The turbine rotor journal scratch grinding device of claim 1, wherein: the grinding device comprises a grinding block, a rotating handle, a grinding block, a liquid injection hole, a pressure tank and grinding liquid, wherein the rotating handle is arranged corresponding to the grinding block, the bottom end of the rotating handle is provided with the liquid injection hole communicated with the inner side of the shell, the pressure tank communicated with the liquid injection hole is further arranged on the shell, and the grinding liquid is stored in the pressure tank.
8. The turbine rotor journal scratch grinding device of claim 7, wherein: the pressure tank is a diaphragm pressure tank or an air bag pressure tank, and an arc-shaped connecting plate is arranged at the bottom of the pressure tank.
9. The turbine rotor journal scratch grinding device of claim 1, wherein: the two sides of the shell are also provided with connecting lug plates, a plurality of connecting holes are formed in the connecting lug plates, and the upper semicircular assembly and the lower semicircular assembly are fixedly connected through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110895275.6A CN113696097B (en) | 2021-08-05 | 2021-08-05 | Scratch polishing device for shaft neck of steam turbine rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110895275.6A CN113696097B (en) | 2021-08-05 | 2021-08-05 | Scratch polishing device for shaft neck of steam turbine rotor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113696097A CN113696097A (en) | 2021-11-26 |
| CN113696097B true CN113696097B (en) | 2023-11-07 |
Family
ID=78652139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110895275.6A Active CN113696097B (en) | 2021-08-05 | 2021-08-05 | Scratch polishing device for shaft neck of steam turbine rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113696097B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2210704A2 (en) * | 2009-01-22 | 2010-07-28 | Steinemann Technology AG | Roller bearing |
| CN201552419U (en) * | 2009-11-26 | 2010-08-18 | 兰州瑞迈克电力科技有限公司 | Large-scale shaft neck repairing and drawstring device |
| CN201559117U (en) * | 2009-11-26 | 2010-08-25 | 兰州瑞迈克电力科技有限公司 | On-site grinding assembly for repairing large-size rotor shaft neck |
| CN202622548U (en) * | 2012-03-31 | 2012-12-26 | 中国一冶集团有限公司 | Fixture for grinding and polishing motor journal |
| KR20140142181A (en) * | 2014-10-20 | 2014-12-11 | 이석기계 (주) | Outside grinding device for circular objects |
| CN106925941A (en) * | 2017-03-13 | 2017-07-07 | 上海电气电站设备有限公司 | The positioning tool and prosthetic appliance of macrotype axes series parts axle journal reparation |
| KR101885988B1 (en) * | 2017-02-17 | 2018-08-06 | 한전케이피에스 주식회사 | Rotary journal surface grinding device |
| CN211661777U (en) * | 2020-03-16 | 2020-10-13 | 盛安建设集团有限公司 | Device for grinding a shaft journal |
| RU2734606C1 (en) * | 2019-08-27 | 2020-10-21 | федеральное государственное бюджетное образовательное учреждение высшего образования "Самарский государственный технический университет" | Method of grinding spherical end face of taper rollers |
| CN112643531A (en) * | 2020-12-16 | 2021-04-13 | 华能伊敏煤电有限责任公司 | Grinding tool for small shaft disc of steam turbine rotor |
-
2021
- 2021-08-05 CN CN202110895275.6A patent/CN113696097B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2210704A2 (en) * | 2009-01-22 | 2010-07-28 | Steinemann Technology AG | Roller bearing |
| CN201552419U (en) * | 2009-11-26 | 2010-08-18 | 兰州瑞迈克电力科技有限公司 | Large-scale shaft neck repairing and drawstring device |
| CN201559117U (en) * | 2009-11-26 | 2010-08-25 | 兰州瑞迈克电力科技有限公司 | On-site grinding assembly for repairing large-size rotor shaft neck |
| CN202622548U (en) * | 2012-03-31 | 2012-12-26 | 中国一冶集团有限公司 | Fixture for grinding and polishing motor journal |
| KR20140142181A (en) * | 2014-10-20 | 2014-12-11 | 이석기계 (주) | Outside grinding device for circular objects |
| KR101885988B1 (en) * | 2017-02-17 | 2018-08-06 | 한전케이피에스 주식회사 | Rotary journal surface grinding device |
| CN106925941A (en) * | 2017-03-13 | 2017-07-07 | 上海电气电站设备有限公司 | The positioning tool and prosthetic appliance of macrotype axes series parts axle journal reparation |
| RU2734606C1 (en) * | 2019-08-27 | 2020-10-21 | федеральное государственное бюджетное образовательное учреждение высшего образования "Самарский государственный технический университет" | Method of grinding spherical end face of taper rollers |
| CN211661777U (en) * | 2020-03-16 | 2020-10-13 | 盛安建设集团有限公司 | Device for grinding a shaft journal |
| CN112643531A (en) * | 2020-12-16 | 2021-04-13 | 华能伊敏煤电有限责任公司 | Grinding tool for small shaft disc of steam turbine rotor |
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| Publication number | Publication date |
|---|---|
| CN113696097A (en) | 2021-11-26 |
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Address after: No. 177 Fourth Street, Zhengzhou Economic and Technological Development Zone, Zhengzhou City, Henan Province, 450000 Applicant after: State Power Investment Henan Engineering Operation and Maintenance Co.,Ltd. Address before: No.177, 4th Street, economic and Technological Development Zone, Guancheng Hui District, Zhengzhou City, Henan Province, 450000 Applicant before: State power investment Henan Electric Power Engineering Co.,Ltd. |
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