CN112879232A - Fan impeller assembling platform and construction method - Google Patents
Fan impeller assembling platform and construction method Download PDFInfo
- Publication number
- CN112879232A CN112879232A CN202110102666.8A CN202110102666A CN112879232A CN 112879232 A CN112879232 A CN 112879232A CN 202110102666 A CN202110102666 A CN 202110102666A CN 112879232 A CN112879232 A CN 112879232A
- Authority
- CN
- China
- Prior art keywords
- platform
- fan
- supporting platform
- counterweight device
- counterweight
- 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
- 238000010276 construction Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 19
- 238000009434 installation Methods 0.000 claims description 18
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/10—Assembly of wind motors; Arrangements for erecting wind motors
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The application provides a fan impeller assembling platform and a construction method, wherein the method comprises the following steps: step one, a supporting platform is arranged, and a fan hub is arranged on the supporting platform; step two, arranging a counterweight device, and arranging a single counterweight device on the supporting platform; step three, setting a fan blade, and setting a single fan blade at the position opposite to the counterweight device set in the step two; and step four, repeating the step two to the step three until the fan impeller is assembled. According to the fan impeller assembling platform and the construction method, when the fan blades are installed, the counterweight device is arranged at the relative position, the balance of the fan blades is guaranteed, the fan blades are prevented from being continuously hoisted, free pitch change of the single fan blade can be carried out, conditions are created for fastening of the torque of the fan blades, the torque fastening efficiency is improved, the assembling time of the fan blades is shortened, the supporting platform can be repeatedly used, and the time cost is greatly improved.
Description
Technical Field
The invention belongs to the technical field of wind power new energy construction, and particularly relates to a platform capable of increasing the assembling stability and the efficiency of a graded impeller and a construction method thereof.
Background
Wind power generation is used as a clean and continuous new energy, has incomparable advantages with other energy, and has very important significance for adjusting energy structure, reducing environmental pollution and promoting economic development.
Because the size of the existing fan blade is large, the length of a single blade is more than 70 meters or even longer, and the impeller is difficult to assemble in a mountain wind field under a complex terrain condition. After a blade is installed, the blade needs to be hung by using an auxiliary automobile sling in order to ensure the balance of a hub, so that the blade cannot be fastened by changing the pitch and the moment, and the assembly efficiency is influenced. Before three blades of the impeller are installed, two auxiliary truck cranes are required to hang two blades which are installed firstly respectively, so that the overall stability of the impeller is ensured, and the problems of low use efficiency of mechanical equipment and large requirement on platform stations are caused. At present, in the assembling process of an impeller on a fan platform, the whole impeller is stressed on a hub tool, the bearing area is small, and great potential safety hazards are easily caused when the impeller is not placed flatly. Therefore, under the condition of complex terrain, how to effectively utilize the existing field, ensure the construction efficiency, save the equipment resources, improve the service efficiency of hoisting equipment, respond to the call of green civilized construction, and is a problem to be solved at present.
Disclosure of Invention
In view of the above, the present invention provides a fan impeller assembling platform and a construction method thereof, so as to solve or at least overcome at least one technical problem in the prior art.
In a first aspect, a method for constructing a fan impeller assembly platform is provided, which includes the following steps:
step one, a supporting platform is arranged, and a fan hub is arranged on the supporting platform;
step two, arranging a counterweight device, and arranging a single counterweight device on the supporting platform;
step three, a fan blade is arranged, and a single fan blade is arranged at the position opposite to the counterweight device arranged in the step two;
and step four, repeating the step two to the step three until the fan impeller is assembled.
Further, in the first step, a lifting appliance is adopted to transport the fan hub, and the fan hub is installed on the first installation part in the center of the supporting platform.
Further, in the second step, the method for arranging the single counterweight device on the supporting platform comprises:
hoisting a single counterweight device to the supporting platform, and installing the single counterweight device to the supporting platform when the step two is repeated;
or,
and D, removing the counterweight device from the supporting platform to enable only a single counterweight device to be left on the supporting platform, and installing the single counterweight device on the supporting platform when the step two is repeated.
Further, still include:
and fifthly, removing the connection between the fan hub and the supporting platform.
In a second aspect, there is provided a fan wheel assembly platform comprising:
a support platform;
the first mounting part is used for mounting a fan hub;
and at least three counterweight devices are detachably connected to the supporting platform, and the counterweight devices are circumferentially and uniformly distributed by taking the first installation part as a center.
Further, supporting platform's cross-section is circular, first installation department with the counter weight device all sets up on same side.
Further, first installation department sets up supporting platform's middle part, first installation department is including setting up a plurality of bolts on the supporting platform.
Further, a plurality of second installation parts are arranged on the supporting platform, and the second installation parts are used for correspondingly installing the counterweight device.
Furthermore, each second mounting part is a counterweight groove;
each counterweight groove comprises a groove formed in the supporting platform, or is formed by splicing a plurality of baffle plates arranged on the supporting platform.
Furthermore, a plurality of lifting lugs are arranged on the supporting platform.
The application has the following beneficial effects:
the utility model provides a fan wheel assembles platform and construction method, fan wheel hub is installed to the first installation department on the supporting platform, directly assemble fan blade through fan wheel hub, when installing fan blade, set up the counter weight device in relative position, fan blade's equilibrium has been guaranteed, the continuation hoist and mount to fan blade has been avoided, and can also carry out the freedom of single fan blade and become the oar, the condition has been created for the fastening of fan blade moment, the efficiency of moment fastening has been improved, fan blade's equipment time has been shortened, and supporting platform can used repeatedly, the time cost has greatly been promoted.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings.
Fig. 1 is a schematic flow chart of a construction method of a fan impeller assembly platform according to an embodiment of the present invention;
FIG. 2 is a simplified structural schematic diagram of a fan wheel assembly platform according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of a single fan blade mounted to a fan wheel assembly platform according to an embodiment of the present invention;
fig. 4 is an assembled fan wheel provided in a fan wheel assembly platform according to an embodiment of the present invention.
The system comprises a support platform 1, a fan hub 2, a counterweight device 3, a counterweight groove 4, a lifting lug 5 and a fan blade 6.
Detailed Description
Various embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Like elements in the various figures are denoted by the same or similar reference numerals. For purposes of clarity, the various features in the drawings are not necessarily drawn to scale.
In a first aspect, referring to fig. 1 to 4, a method for constructing a fan impeller assembly platform is provided, which includes the following steps: step one, a supporting platform 1 is arranged, and a fan hub 2 is arranged on the supporting platform 1; step two, arranging a counterweight device 3, and arranging a single counterweight device 3 on the supporting platform 1; step three, arranging a fan blade 6, and arranging a single fan blade 6 at the position opposite to the counterweight device 3 arranged in the step two; and step four, repeating the step two to the step three until the fan impeller is assembled.
In this embodiment, install fan wheel hub 2 through supporting platform 1, and realize fan wheel hub 2's stability, can be through installing counter weight device 3 additional when installing fan blade 6, realize fan blade 6's stability, avoid because guarantee fan blade 6's balance and the hoist and mount to fan blade 6 that last, and can also carry out the free of 360 degrees of single blade and become the oar, created the condition for the fastening of blade moment, the efficiency of moment fastening has been improved, the equipment time of every group fan wheel hub 2 has been shortened.
In the first step, the fan hub 2 is transported by a lifting appliance, the fan hub 2 is installed on the first installation part at the center of the supporting platform 1, the fan hub 2 is arranged at the center of the supporting platform 1, and the stability of the whole supporting platform 1 is guaranteed.
In the second step, the method for arranging the single counterweight device 3 on the supporting platform 1 comprises the following steps: the first method is to hoist the single counterweight device 3 to the supporting platform 1, and when the second step is repeated, the single counterweight device 3 is installed on the supporting platform 1. And a second method, namely, removing the counterweight device 3 from the supporting platform 1 to ensure that only a single counterweight device 3 is left on the supporting platform 1, and installing the single counterweight device 3 on the supporting platform 1 when the second step is repeated.
As will be understood by those skilled in the art, the first method is suitable for assembling the fan by using the support platform 1 for the first time, and the second method is suitable for assembling the fan at the later stage, after the fan is assembled for the first time, the counterweight device 3 is still on the support platform 1 after the assembled fan is hoisted, and then the counterweight device 3 is hoisted, so that one counterweight device 3 on the support platform 1 is remained, the single counterweight device 3 hoisted for the first time in the first method is reduced, and the single counterweight device 3 arranged on the support platform 1 does not cause the inclination of the support platform 1.
In this embodiment, the method further includes: and fifthly, removing the connection between the fan hub 2 and the supporting platform 1. It will be appreciated that the counterweight 3 may be left on the support platform 1 without the need for lifting.
In a second aspect, referring to fig. 2 to 4, there is provided a fan impeller assembling platform, which is applied to the fan impeller assembling platform construction method of the first aspect, and includes: a support platform 1; a first mounting portion for mounting the fan hub 2; and at least three counterweight devices 3 are detachably connected to the supporting platform 1, and the counterweight devices 3 are circumferentially and uniformly distributed by taking the first mounting part as a center.
The cross-section of supporting platform 1 is circular, first installation department with counter weight device 3 all sets up on same side. Supporting platform 1 can be formed by the welding of circular shape steel sheet, and first installation department predetermines according to fan wheel hub 2's mounting structure on supporting platform 1, guarantee to install fan wheel hub 2 smoothly, make fan wheel hub 2 more stable.
First installation department sets up supporting platform 1's middle part, first installation department is including setting up a plurality of bolts on supporting platform 1. A plurality of bolted connections that set up are on supporting platform 1, install it on first installation department through hoist and mount fan wheel hub 2 to connect the nut.
The supporting platform 1 is provided with a plurality of second installation parts, and the second installation parts are used for correspondingly installing the counterweight device 3. Each second mounting part is a counterweight groove 4; each counterweight groove 4 comprises a groove formed in the supporting platform 1, or is formed by splicing a plurality of baffle plates arranged on the supporting platform 1. It should be understood that the counterweight grooves 4 are provided for installing the counterweight devices 3, and can play a role of stabilizing each counterweight device 3, and prevent the counterweight devices 3 from sliding on the supporting platform 1 to cause safety accidents. Furthermore, a jacking bolt can be arranged on the baffle plate of the counterweight groove 4 to jack the counterweight device 3, so that the counterweight device 3 can be fastened and the like.
In this embodiment, the supporting platform 1 is provided with a plurality of lifting lugs 5, and each lifting lug 5 is used for lifting the supporting platform 1 by the lifting device.
The utility model provides a fan wheel assembles platform and construction method, fan wheel hub 2 is installed to the first installation department on supporting platform 1, directly assemble fan blade 6 through fan wheel hub 2, when installing fan blade 6, set up counter weight device 3 in relative position, the equilibrium of fan blade 6 has been guaranteed, the continuation hoist and mount to fan blade 6 has been avoided, and can also carry out the free of single fan blade 6 and become the oar, the condition has been created for the fastening of fan blade 6 moment, the efficiency of moment fastening has been improved, the equipment time of fan blade 6 has been shortened, and supporting platform 1 can used repeatedly, the time cost has greatly been promoted.
It is noted that, herein, relational terms such as first and second, and the like may be 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. Also, 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. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Finally, it should be noted that: it should be understood that the above examples are only for clearly illustrating the present invention and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the scope of the invention.
Claims (10)
1. A construction method of a fan impeller assembly platform is characterized by comprising the following steps:
step one, a supporting platform is arranged, and a fan hub is arranged on the supporting platform;
step two, arranging a counterweight device, and arranging a single counterweight device on the supporting platform;
step three, a fan blade is arranged, and a single fan blade is arranged at the position opposite to the counterweight device arranged in the step two;
and step four, repeating the step two to the step three until the fan impeller is assembled.
2. The fan impeller assembling platform construction method according to claim 1, wherein in the first step, the fan hub is transported by a hanger and mounted on the first mounting portion at the center of the supporting platform.
3. The fan impeller assembling platform construction method according to claim 1, wherein in the second step, the method for arranging the single counterweight device on the supporting platform comprises the following steps:
hoisting a single counterweight device to the supporting platform, and installing the single counterweight device to the supporting platform when the step two is repeated;
or,
and D, removing the counterweight device from the supporting platform to enable only a single counterweight device to be left on the supporting platform, and installing the single counterweight device on the supporting platform when the step two is repeated.
4. The fan impeller assembling platform construction method according to any one of claims 1 to 3, further comprising:
and fifthly, removing the connection between the fan hub and the supporting platform.
5. A fan wheel assembly platform, comprising:
a support platform;
the first mounting part is used for mounting a fan hub;
and at least three counterweight devices are detachably connected to the supporting platform, and the counterweight devices are circumferentially and uniformly distributed by taking the first installation part as a center.
6. The fan impeller assembly platform of claim 5, wherein the support platform is circular in cross-section, and the first mounting portion and the counterweight device are both disposed on the same side.
7. The fan impeller assembly platform of claim 5, wherein the first mounting portion is disposed in a middle portion of the support platform, the first mounting portion including a plurality of bolts disposed on the support platform.
8. The fan impeller assembling platform according to claim 5, wherein the supporting platform is provided with a plurality of second mounting portions, and the second mounting portions are used for correspondingly mounting the counterweight devices.
9. The fan impeller assembly platform of claim 8, wherein each of the second mounting portions is a counterweight groove;
each counterweight groove comprises a groove formed in the supporting platform, or is formed by splicing a plurality of baffle plates arranged on the supporting platform.
10. The fan impeller assembly platform of claim 9, wherein the support platform is provided with a plurality of lifting lugs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110102666.8A CN112879232A (en) | 2021-01-26 | 2021-01-26 | Fan impeller assembling platform and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110102666.8A CN112879232A (en) | 2021-01-26 | 2021-01-26 | Fan impeller assembling platform and construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112879232A true CN112879232A (en) | 2021-06-01 |
Family
ID=76053212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110102666.8A Pending CN112879232A (en) | 2021-01-26 | 2021-01-26 | Fan impeller assembling platform and construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112879232A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118008706A (en) * | 2024-04-10 | 2024-05-10 | 山西省安装集团股份有限公司 | Supporting device for installing impeller of wind driven generator |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102459892A (en) * | 2009-05-18 | 2012-05-16 | 维斯塔斯风力系统有限公司 | A hub for a wind turbine |
| CN102644562A (en) * | 2012-05-14 | 2012-08-22 | 江苏龙源振华海洋工程有限公司 | Process for installing impeller assembly elephant foot balance bracket of offshore wind power field |
| CN102979685A (en) * | 2012-11-29 | 2013-03-20 | 北京金风科创风电设备有限公司 | Installation equipment and installation method for impeller in offshore wind generating set |
| US20130272876A1 (en) * | 2012-04-11 | 2013-10-17 | Peter Loevenskjold Falkenberg | Arrangement and method to rotate the hub of a wind turbine |
| US20150275854A1 (en) * | 2014-03-28 | 2015-10-01 | Alstom Renewable Technologies | Counterweighting a wind turbine hub |
| CN205277701U (en) * | 2015-12-30 | 2016-06-01 | 江苏金风科技有限公司 | Equipment of wind generating set impeller is with assembling device |
| CN106224170A (en) * | 2016-07-21 | 2016-12-14 | 新疆金风科技股份有限公司 | Wind power generating set impeller sets to device and impeller sets to method |
| TWI677624B (en) * | 2018-10-18 | 2019-11-21 | 潤弘精密工程事業股份有限公司 | Offshore wind power generation apparatus and offshore wind power generation system |
| CN111721491A (en) * | 2020-07-21 | 2020-09-29 | 上海电气风电集团股份有限公司 | Fan full-size blade two-axis loading fatigue test method and two-axis loading equipment |
| KR102173574B1 (en) * | 2019-04-26 | 2020-11-03 | 두산중공업 주식회사 | Counter weight apparatus for installing wind turbine, and installing method of wind turbine using the same |
| CN112145359A (en) * | 2019-06-26 | 2020-12-29 | 江苏金风科技有限公司 | Impeller assembling tool and impeller assembling method for offshore wind generating set |
-
2021
- 2021-01-26 CN CN202110102666.8A patent/CN112879232A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102459892A (en) * | 2009-05-18 | 2012-05-16 | 维斯塔斯风力系统有限公司 | A hub for a wind turbine |
| US20130272876A1 (en) * | 2012-04-11 | 2013-10-17 | Peter Loevenskjold Falkenberg | Arrangement and method to rotate the hub of a wind turbine |
| CN102644562A (en) * | 2012-05-14 | 2012-08-22 | 江苏龙源振华海洋工程有限公司 | Process for installing impeller assembly elephant foot balance bracket of offshore wind power field |
| CN102979685A (en) * | 2012-11-29 | 2013-03-20 | 北京金风科创风电设备有限公司 | Installation equipment and installation method for impeller in offshore wind generating set |
| US20150275854A1 (en) * | 2014-03-28 | 2015-10-01 | Alstom Renewable Technologies | Counterweighting a wind turbine hub |
| CN205277701U (en) * | 2015-12-30 | 2016-06-01 | 江苏金风科技有限公司 | Equipment of wind generating set impeller is with assembling device |
| CN106224170A (en) * | 2016-07-21 | 2016-12-14 | 新疆金风科技股份有限公司 | Wind power generating set impeller sets to device and impeller sets to method |
| TWI677624B (en) * | 2018-10-18 | 2019-11-21 | 潤弘精密工程事業股份有限公司 | Offshore wind power generation apparatus and offshore wind power generation system |
| KR102173574B1 (en) * | 2019-04-26 | 2020-11-03 | 두산중공업 주식회사 | Counter weight apparatus for installing wind turbine, and installing method of wind turbine using the same |
| CN112145359A (en) * | 2019-06-26 | 2020-12-29 | 江苏金风科技有限公司 | Impeller assembling tool and impeller assembling method for offshore wind generating set |
| CN111721491A (en) * | 2020-07-21 | 2020-09-29 | 上海电气风电集团股份有限公司 | Fan full-size blade two-axis loading fatigue test method and two-axis loading equipment |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118008706A (en) * | 2024-04-10 | 2024-05-10 | 山西省安装集团股份有限公司 | Supporting device for installing impeller of wind driven generator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112879232A (en) | Fan impeller assembling platform and construction method | |
| CN218931433U (en) | Offshore wind power bolt assembly hoisting tool | |
| CN117489535A (en) | Tower barrel structure of detachable hoisting platform and hoisting method thereof | |
| CN217105888U (en) | Indoor rotation steel ladder | |
| CN113896084A (en) | Single loop wheel machine hoist and mount overlength fan blade gallows | |
| CN210286456U (en) | Wind wheel hoisting tool | |
| CN109306938B (en) | Wind turbine tower, tower installation method and wind turbine | |
| CN212076198U (en) | Machine table structure of tower crane for hoisting fan | |
| CN216945817U (en) | Lifting hanging beam for mounting wind driven generator cabin | |
| CN212222254U (en) | Self-erecting and self-disassembling device for crane boom | |
| CN211174480U (en) | Tool for replacing high-speed shafting by using 3MW wind power gear box for overhead maintenance | |
| CN116180602A (en) | Welding construction method for curved surface special-shaped inner concrete outer steel main tower decorative plate | |
| CN219730252U (en) | Hoisting device for wind wheel system | |
| CN114148888A (en) | Lifting hanging beam for mounting wind driven generator cabin and operation method | |
| CN221169839U (en) | Tower barrel structure of detachable hoisting platform | |
| CN219412059U (en) | Tower pole for power transmission | |
| CN201885870U (en) | Interval change type pitch test device | |
| CN214092144U (en) | Impeller assembling and fixing device of wind generating set | |
| CN218778665U (en) | Jacking sleeve frame and tower crane | |
| CN218958457U (en) | Tubular busbar hoisting bracket special for wind power stepped concrete tower | |
| CN216807910U (en) | Land single blade replacing tool | |
| CN216638762U (en) | Movable pulley block structure suitable for large-angle diagonal-pulling working condition gantry hoist | |
| CN205737707U (en) | A kind of novel combination type crossbeam | |
| CN219837689U (en) | Pump equipment bearing box fixing device | |
| CN117869200B (en) | Fan dismantling method and system in tower bending state |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210601 |