CN113700756B - Wind-powered electricity generation locking dish for aerogenerator - Google Patents
Wind-powered electricity generation locking dish for aerogenerator Download PDFInfo
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- CN113700756B CN113700756B CN202110992485.7A CN202110992485A CN113700756B CN 113700756 B CN113700756 B CN 113700756B CN 202110992485 A CN202110992485 A CN 202110992485A CN 113700756 B CN113700756 B CN 113700756B
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- inner ring
- arc
- outer sleeve
- grooves
- groove
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- 230000005611 electricity Effects 0.000 title claims description 8
- 230000005540 biological transmission Effects 0.000 abstract description 10
- 238000010248 power generation Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
- F16D1/06—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
- F16D1/08—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key
- F16D1/09—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial clamping due to axial loading of at least one pair of conical surfaces
- F16D1/092—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial clamping due to axial loading of at least one pair of conical surfaces the pair of conical mating surfaces being provided on the coupled hub and shaft
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wind Motors (AREA)
Abstract
The invention relates to the field of wind power generation equipment and discloses a wind power locking disc for a wind power generator, which comprises a jacket and a main shaft, wherein a first inner ring and a second inner ring are respectively arranged on two sides of the jacket, the connecting surfaces of the first inner ring and the jacket are inclined planes, the first inner ring and the second inner ring are sleeved on the outer side of the jacket, the first inner ring and the second inner ring are fixed on the jacket through bolts, and a plurality of arc-shaped bearing blocks positioned on one side of the bolts are arranged in the jacket. Through the structural design of the first inner ring and the second inner ring at two sides of the outer sleeve, the arc-shaped bearing blocks and the limiting blocks in the bolt linkage outer sleeve for fixing the first inner ring and the second inner ring are matched, the arc-shaped bearing blocks of the arc-shaped grooves are used for fixing the first inner ring and the second inner ring through the limiting blocks to bear the outer sleeve, so that rated transmission torque of strong gusts, turbulent winds, instantaneous impacts and the like to the wind power locking disc is handled, and the axial force impact resistance performance of the wind power locking disc is improved.
Description
Technical Field
The invention relates to the field of wind power generation equipment, in particular to a wind power locking disc for a wind power generator.
Background
The locking disc is a friction keyless connection device between the shaft and the shaft sleeve, the device can apply a tightening force to the shaft sleeve from the outside, is one of main matching components of the wind power speed increaser, and can generate huge holding force between the inner ring and the shaft and between the outer ring and the hub through the action of high-strength bolts, and when bearing load, the device transmits torque, axial force or composite load of the two by the combination pressure of the expansion sleeve and the machine part and the friction force generated by the combination pressure of the expansion sleeve and the machine part.
However, when the existing wind power locking disc is used, the nut is only used for locking, and is easy to cause larger impact on axial force of a main shaft due to severe environmental influences such as strong gusts, turbulent wind, large instantaneous impact load and the like when a unit operates, so that the nut for locking is loosened, the bolt fixing strength is reduced, the locking degree of the bolt, an outer sleeve and the main shaft is reduced, the clamping force of the locking disc on the main shaft cannot be guaranteed, slipping is easy to occur in the load transmission process, and the main shaft is free-wheeling, so that the service life of the wind driven generator is influenced.
Disclosure of Invention
The invention provides a wind power locking disc for a wind driven generator, which has the advantage of long service life and solves the technical problems in the background technology.
In order to achieve the above object, the present invention provides the following technical solutions: the utility model provides a wind-powered electricity generation locking dish for aerogenerator, includes overcoat, main shaft, the both sides of overcoat are equipped with first inner ring, second inner ring respectively, the junction surface of first inner ring, second inner ring and overcoat is the inclined plane, and first inner ring, second inner ring all suit in the outside of overcoat, first inner ring and second inner ring all pass through the bolt fastening on the overcoat, be equipped with a plurality of arc loading blocks that are located bolt one side in the overcoat, and still movable sleeve has a plurality of stopper that are located arc loading block below in the overcoat, and the bottom and the inclined plane activity joint of first inner ring, second inner ring of stopper.
Optionally, two groups of through grooves are formed in the outer sleeve, the number of each through groove is six, the two groups of through grooves are symmetrical with the axis of the outer sleeve, the two groups of through grooves are distributed in a staggered mode, each through groove is composed of a communicated thread groove and an arc groove, the arc center axis of each arc groove is in the same straight line with the central axis of the outer sleeve, one group of through grooves faces to the first inner ring, the other group of through grooves face to the second inner ring, the first inner ring and the second inner ring are fixed on the outer sleeve through bolts sleeved with threads of the thread grooves, the arc bearing blocks are movably sleeved in the arc grooves, vertical grooves located on the outer sides of the arc grooves are formed in the outer sleeve, the vertical grooves are communicated with the arc grooves and the inner sides of the outer sleeve, and the limiting block is movably sleeved in the vertical grooves.
Optionally, a spring located in the through groove is arranged between the arc-shaped bearing block and the bolt, and the sum of the length value of the arc-shaped bearing block, the length value of the bolt and the initial length value of the spring is larger than the distance value between the outer side of the first inner ring and the outer side of the second inner ring.
Optionally, the arc loading shoe is kept away from the bottom of spring one side and has been seted up the empty groove, the top fixedly connected with upper magnetic path of empty groove inner chamber, and the inner wall of empty groove towards spring one side is the inclined plane design, the middle part fixedly connected with lower magnetic path on stopper top, and the magnetic pole at lower magnetic path top is opposite with the magnetic pole at upper magnetic path bottom.
The invention provides a wind power locking disc for a wind driven generator, which has the following beneficial effects:
1. according to the wind power locking disc for the wind power generator, through the structural design of the first inner ring and the second inner ring on two sides of the outer sleeve, the first inner ring and the second inner ring are matched and fixed with the arc-shaped bearing blocks and the limiting blocks in the bolt linkage outer sleeve, the first inner ring and the second inner ring are fixed through the limiting blocks so as to bear the outer sleeve by utilizing the arc-shaped bearing blocks of the arc-shaped grooves, rated torque transmission of strong gusts, turbulent wind, instantaneous impact and the like to the wind power locking disc is handled, the axial force anti-impact performance of the wind power locking disc is improved, torque transmission of the strong gusts, turbulent wind, instantaneous impact and the like by using fixed bolts of the conventional wind power locking disc is effectively avoided, bolt fixing strength is easily reduced, further, the locking degree of the bolts, the outer sleeve and a main shaft is reduced, clamping force between the locking disc and the main shaft cannot be guaranteed, slipping is easily caused in a load transmission process, and the problem that the main shaft idles and the operation of the generator is affected is solved.
2. This wind-powered electricity generation is wind-powered electricity generation locking dish for aerogenerator blocks perpendicular groove and draw-in groove through the stopper to fixed draw-in groove, make second inner ring and overcoat, main shaft homoenergetic closely laminate, thereby can utilize its frictional force transmission, so that the main shaft drives the overcoat and stably rotate, avoided long-time use the back, the fixed strength of bolt reduces and takes place not hard up, leads to the problem that takes place to skid in the load conveying process, has further improved wind-powered electricity generation locking dish's life.
Drawings
FIG. 1 is a schematic diagram of a cut-away structure of a wind power locking disk of the present invention;
FIG. 2 is a partial schematic view of the structural garment of FIG. 1 according to the present invention;
FIG. 3 is a side cross-sectional view of the invention at a-a of FIG. 1;
FIG. 4 is a side cross-sectional view of the invention at b-b of FIG. 1;
FIG. 5 is an enlarged schematic view of a portion of FIG. 2 according to the present invention;
FIG. 6 is a schematic view of a second inner ring of the structure of FIG. 1 according to the present invention.
In the figure: 1. a jacket; 101. a vertical groove; 2. a main shaft; 3. a first inner ring; 4. a second inner ring; 401. a clamping groove; 5. a bolt; 6. an arc-shaped bearing block; 601. an empty groove; 602. an upper magnetic block; 7. a spring; 8. a limiting block; 801. lower magnetic block.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, a wind power locking disc for a wind driven generator comprises a casing 1 and a main shaft 2, wherein a first inner ring 3 and a second inner ring 4 are respectively movably sleeved on two sides of the middle part of the casing 1, the shapes and the sizes of the first inner ring 3 and the second inner ring 4 are the same, the connecting surfaces of the first inner ring 3 and the second inner ring 4 and the casing 1 are inclined planes, the inner side of the first inner ring 3 is movably sleeved with the outer side of the casing 1, referring to fig. 2-4, two groups of through grooves are formed in the casing 1, the number of each group of through grooves is six, the two groups of through grooves are symmetrical with the axis of the casing 1, the two groups of through grooves are distributed in a staggered manner, each group of through grooves is composed of a communicated thread groove and an arc groove, the arc axis of each arc groove is in the same line with the central axis of the casing 1, the thread groove in one group of through grooves faces the first inner ring 3, the thread groove in the other group of through grooves faces the second inner ring 4, the first inner ring 3 and the second inner ring 4 are fixed on the outer sleeve 1 through bolts 5 sleeved with screw grooves, an adaptive arc-shaped bearing block 6 is movably sleeved in each arc-shaped groove, a spring 7 positioned in a through groove is arranged between each arc-shaped bearing block 6 and each bolt 5, the sum of the length value of each arc-shaped bearing block 6, the length value of each bolt 5 and the initial length value of each spring 7 is larger than the distance value between the outer side of the first inner ring 3 and the outer side of the second inner ring 4, the spring 7 is utilized to compensate the error of the length value of each bolt 5 and each arc-shaped bearing block 6, one end of each arc-shaped bearing block 6 in each arc-shaped groove far from the spring 7 extends into the inner side of the first inner ring 3 and the second inner ring 4 respectively, please refer to 5-6, a vertical groove 101 positioned at the outer side of each arc-shaped groove is arranged on the outer sleeve 1, the vertical groove 101 is communicated with the inner sides of the arc-shaped groove and the outer sleeve 1, a limiting block 8 is movably sleeved in each vertical groove 101, the outer edges of the contact surfaces of the first inner ring 3 and the second inner ring 4 with the outer sleeve 1 are provided with clamping grooves 401 corresponding to the vertical grooves 101, and the length value of the limiting block 8 is larger than the distance value between the bottom of the clamping groove 401 and the top of the vertical groove 101.
The first inner ring 3 and the second inner ring 4 are arranged on two sides of the outer sleeve 1, the first inner ring 3 and the second inner ring 4 are fixed on the outer sleeve 1 through the bolts 5, when the first inner ring 3 and the second inner ring 4 are fixed by the bolts 5, the limiting block 8 is limited by the arc-shaped bearing blocks 6, meanwhile, under the limit of the bolts 5 and the springs 7, the arc-shaped bearing blocks 6 in each arc-shaped groove limit the outer sleeve 1, the first inner ring 3, the outer sleeve 1 and the second inner ring 4 respectively, so that the outer sleeve 1 is borne by the arc-shaped bearing blocks 6 of the arc-shaped grooves, the rated transmission torque of strong gusts, turbulent gusts, instantaneous impact and the like to the wind power locking disc is solved, the axial force impact resistance of the wind power locking disc is improved, the torque transmission of the existing wind power locking disc by the fixed bolts 5 is effectively avoided, the fixed intensity of the bolt 5 is easy to reduce, and then the locking degree of the bolt 5 and the outer sleeve 1 and the main shaft 2 is reduced, the clamping force of the locking disc to the main shaft cannot be guaranteed, slipping occurs easily in the load transmission process, the main shaft is free to spin, the working of a generator is affected, and the vertical groove 101 and the clamping groove 401 are clamped through the limiting block 8, so that the clamping groove 401 is fixed, the second inner ring 4 can be tightly attached to the outer sleeve 1 and the main shaft 2, friction force can be utilized to drive the outer sleeve 1 to stably rotate, the problem that slipping occurs in the load transmission process due to the fact that the fixed intensity of the bolt 5 is reduced after long-time use is avoided, and the service life of the wind power locking disc is further prolonged.
The bottom that arc loading shoe 6 kept away from spring 7 one side has offered empty groove 601, the top fixedly connected with upper position magnetic path 602 of empty groove 601 inner chamber, and the inner wall that empty groove 601 was towards spring 7 one side is the inclined plane design, the middle part fixedly connected with lower position magnetic path 801 on stopper 8 top, and the magnetic pole at lower position magnetic path 801 top is opposite with the magnetic pole of upper position magnetic path 602 bottom, in order to dismantle the maintenance in follow-up, through taking out bolt 5, and pull arc loading shoe 6 removal outward, make upper position magnetic path 602 remove the top of lower position magnetic path 801 after, lower position magnetic path 801 moves up and is complete with draw-in groove 401 under the magnetic attraction effect, thereby can take off second inner ring 4, the same reason takes out first inner ring 3 at the opposite side, when guaranteeing wind-powered electricity generation locking dish high life locking effect, the later maintenance of being convenient for, the use has been made things convenient for.
When the clamp is used, firstly, each arc-shaped bearing block 6 is placed from one side of an arc-shaped groove, the empty groove 601 is kept at the corresponding vertical groove 101, then the limiting block 8 is placed into the vertical groove 101 from the inner side of the outer sleeve 1 in sequence, the lower magnetic block 801 is adsorbed onto the empty groove 601, at the moment, the bottom of the limiting block 8 is positioned at the inner side of the vertical groove 101, then the first inner ring 3 and the second inner ring 4 are respectively sleeved on two sides of the outer sleeve 1, the first inner ring 3, the second inner ring 4 and the bolts 5 are integrally sleeved on the outer sleeve 1, the first inner ring 3 and the second inner ring 4 are kept in a state of being tightly attached to the outer sleeve 1 and the main shaft 2, the clamping groove 401 is positioned below the vertical groove 101, then the bolts 5 are screwed down in sequence, the bolts 5 push the springs 7 and the arc-shaped bearing blocks 6 to move, the limiting block 8 move down to clamp the clamping groove 401, and the bolts 5 lock the first inner ring 3 and the second inner ring 4 on the outer sleeve 1.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (2)
1. The utility model provides a wind-powered electricity generation locking dish for aerogenerator, includes overcoat (1), main shaft (2), its characterized in that: the two sides of the outer sleeve (1) are respectively provided with a first inner ring (3) and a second inner ring (4), the connecting surfaces of the first inner ring (3) and the second inner ring (4) and the outer sleeve (1) are inclined planes, the first inner ring (3) and the second inner ring (4) are sleeved on the outer side of the outer sleeve (1), the first inner ring (3) and the second inner ring (4) are fixed on the outer sleeve (1) through bolts (5), a plurality of arc-shaped bearing blocks (6) positioned on one side of the bolts (5) are arranged in the outer sleeve (1), a plurality of limiting blocks (8) positioned below the arc-shaped bearing blocks (6) are movably sleeved in the outer sleeve (1), and the bottoms of the limiting blocks (8) are movably clamped with the inclined planes of the first inner ring (3) and the second inner ring (4);
two groups of through grooves are formed in the outer sleeve (1), the number of each group of through grooves is six, the two groups of through grooves are symmetrical with the axis of the outer sleeve (1), the two groups of through grooves are distributed in a staggered mode, each through groove is composed of a communicated threaded groove and an arc groove, the arc center axis of each arc groove is in the same straight line with the central axis of the outer sleeve (1), the threaded groove in one group of through grooves faces the first inner ring (3), the threaded groove in the other group of through grooves faces the second inner ring (4), the first inner ring (3) and the second inner ring (4) are fixed on the outer sleeve (1) through bolts (5) sleeved with the threaded grooves in a threaded mode, the arc bearing blocks (6) are movably sleeved in the arc grooves, vertical grooves (101) located on the outer sides of the arc grooves are formed in the outer sleeve (1), the vertical grooves (101) are communicated with the inner sides of the arc grooves and the outer sleeve (1), and the limiting blocks (8) are movably sleeved in the vertical grooves (101);
the arc-shaped bearing block (6) is far away from the bottom of one side of the spring (7) and is provided with an empty groove (601), the top of the inner cavity of the empty groove (601) is fixedly connected with an upper magnetic block (602), the inner wall of the empty groove (601) facing one side of the spring (7) is designed as an inclined plane, the middle part of the top end of the limiting block (8) is fixedly connected with a lower magnetic block (801), and the magnetic poles at the top of the lower magnetic block (801) are opposite to the magnetic poles at the bottom of the upper magnetic block (602).
2. The wind power locking disk for a wind power generator according to claim 1, wherein: a spring (7) positioned in the through groove is arranged between the arc-shaped bearing block (6) and the bolt (5), and the sum of the length value of the arc-shaped bearing block (6), the length value of the bolt (5) and the initial length value of the spring (7) is larger than the distance value between the outer side of the first inner ring (3) and the outer side of the second inner ring (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110992485.7A CN113700756B (en) | 2021-08-27 | 2021-08-27 | Wind-powered electricity generation locking dish for aerogenerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110992485.7A CN113700756B (en) | 2021-08-27 | 2021-08-27 | Wind-powered electricity generation locking dish for aerogenerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113700756A CN113700756A (en) | 2021-11-26 |
| CN113700756B true CN113700756B (en) | 2023-12-19 |
Family
ID=78655607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110992485.7A Active CN113700756B (en) | 2021-08-27 | 2021-08-27 | Wind-powered electricity generation locking dish for aerogenerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113700756B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5639176A (en) * | 1995-02-08 | 1997-06-17 | Mullenberg; Ralph | Clamping set |
| CN1218546A (en) * | 1996-05-15 | 1999-06-02 | 拉尔福·穆尔伯格 | Cone clamping set |
| CN101849116A (en) * | 2007-08-01 | 2010-09-29 | 碧科技术有限责任公司 | Clamping arrangement and ejector and conical ring for the same |
| CN104392077A (en) * | 2014-12-16 | 2015-03-04 | 太原重工股份有限公司 | Wind turbine shrink disk and determination method of transmitting torque of wind turbine shrink disk |
| CN208311295U (en) * | 2018-05-25 | 2019-01-01 | 昆山灵飞达传动有限公司 | A kind of wind-power locking disc being easily installed |
| CN210218627U (en) * | 2019-07-05 | 2020-03-31 | 上海梁源科技发展有限公司 | Turntable center locking mechanism |
| CN211185178U (en) * | 2019-11-06 | 2020-08-07 | 深圳市楷腾建业有限公司 | Trees protection against insects pendant that afforestation used |
| CN112943544A (en) * | 2021-03-09 | 2021-06-11 | 洛阳风动工具有限公司 | Locking disc for wind driven generator |
-
2021
- 2021-08-27 CN CN202110992485.7A patent/CN113700756B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5639176A (en) * | 1995-02-08 | 1997-06-17 | Mullenberg; Ralph | Clamping set |
| CN1218546A (en) * | 1996-05-15 | 1999-06-02 | 拉尔福·穆尔伯格 | Cone clamping set |
| CN101849116A (en) * | 2007-08-01 | 2010-09-29 | 碧科技术有限责任公司 | Clamping arrangement and ejector and conical ring for the same |
| CN104392077A (en) * | 2014-12-16 | 2015-03-04 | 太原重工股份有限公司 | Wind turbine shrink disk and determination method of transmitting torque of wind turbine shrink disk |
| CN208311295U (en) * | 2018-05-25 | 2019-01-01 | 昆山灵飞达传动有限公司 | A kind of wind-power locking disc being easily installed |
| CN210218627U (en) * | 2019-07-05 | 2020-03-31 | 上海梁源科技发展有限公司 | Turntable center locking mechanism |
| CN211185178U (en) * | 2019-11-06 | 2020-08-07 | 深圳市楷腾建业有限公司 | Trees protection against insects pendant that afforestation used |
| CN112943544A (en) * | 2021-03-09 | 2021-06-11 | 洛阳风动工具有限公司 | Locking disc for wind driven generator |
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| Publication number | Publication date |
|---|---|
| CN113700756A (en) | 2021-11-26 |
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Effective date of registration: 20231115 Address after: 100080 South District, 2nd Floor, No. 32 Haidian South Road, Haidian District, Beijing Applicant after: State Power Investment Group Smart Energy Investment Co.,Ltd. Address before: 044000 fourth juming group, panhou village, jiaohuai Township, Linyi County, Yuncheng City, Shanxi Province Applicant before: Chang Zhuangzhuang |
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