CN104500703B - The outfan of wind driven generator yaw and variable propeller gearbox - Google Patents
The outfan of wind driven generator yaw and variable propeller gearbox Download PDFInfo
- Publication number
- CN104500703B CN104500703B CN201410823511.3A CN201410823511A CN104500703B CN 104500703 B CN104500703 B CN 104500703B CN 201410823511 A CN201410823511 A CN 201410823511A CN 104500703 B CN104500703 B CN 104500703B
- Authority
- CN
- China
- Prior art keywords
- outfan
- box
- supporting box
- power transmission
- transmission shaft
- 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.)
- Active
Links
Classifications
-
- 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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
-
- 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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
-
- 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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
-
- 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
- F16H—GEARING
- F16H2700/00—Transmission housings and mounting of transmission components therein; Cooling; Lubrication; Flexible suspensions, e.g. floating frames
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
Abstract
The present invention relates to the outfan of a kind of wind driven generator yaw and variable propeller gearbox, its outfan casing includes the supporting box of the rear box and power transmission shaft of final stage planet circular system, they are bolted, and the outfan of final stage planet carrier and power transmission shaft docking region are located at the sealing space between rear box and supporting box；Rear box is provided with purge cock, and supporting box is provided with grease injection port；By bearings on the back shell, bearing is placed in lubricating oil the outfan of final stage planet carrier, and framework type sealing ring is provided with the outside of bearing；Supporting box is provided with two roller bearings, and grease injection port is located between two roller bearings, and two roller bearings are placed in grease, and sealing ring is provided with the outside of them；The sealing space that one end of power transmission shaft is placed between rear box and supporting box after passing through two roller bearings, is docked with the internal spline of matching by the external splines of end, and the other end is placed in outside supporting box, and end is provided with drive gear.
Description
Technical field
Patent of the present invention is related to the outfan of a kind of wind driven generator yaw and variable propeller gearbox.
Background technology
Driftage and variable propeller gearbox are one of significant components of wind power generating set.As wind field is mostly remote, friendship
The severe area of logical inconvenience, natural environment；And driftage variable propeller gearbox is in the cabin from tens meters, narrow space,
It is difficult in maintenance；As blower fan is to maximizing and marine type development, the weight and volume that driftage becomes oar is increasing, keeps in repair more
Inconvenience.Once driftage variable propeller gearbox breaks down, it is likely to result in blower fan long-time and shuts down, huge economy can be caused to owner
Loss.Therefore these propose very high requirement to the convenience that variable propeller gearbox of going off course is safeguarded.
Existing driftage variable propeller gearbox is typically made up of reducing gear and output mechanism two large divisions.Reducing gear and output
Entirety of the mechanism as an installation；The slow speed turbine stage of reducing gear typically adopts NGW planetary structures, final stage planet carrier and output shaft
Coupled using spline, output shaft passes through two roller bearing supports on output casing, wherein, the less roller bearing in upper end
Lubricating system, as final stage planetary stage part, is to adopt oil lubrication, and the larger roller bearing in lower end adopts grease lubrication.
Meanwhile, outside framework oil seal is provided with the middle of two roller bearings, to isolate two kinds of different lubricant mediums.
Structure above has following obvious deficiency：Gear-box reaches reducing gear and output mechanism two parts can mutual shadow
Ring, after a side breaks down, may result in the opposing party also cannot normal work, may all need to subtract whole when maintenance
Fast device pulls down maintenance；Further, since gear-box overall weight and volume are excessive, the hoisting weight of the live loop wheel machine needed during maintenance
With dismounting space and all than larger, once the gross weight of decelerator exceedes the crane capacity of live loop wheel machine, or live sky is run into
Between it is narrow and small in the case of, i.e., integral demounting and cannot reinstall, sometimes can only by part by manually breaking step by step and installing,
Waste time and energy very much；In addition, the oil sealing of sealing lubricating oil is exported between roller bearing positioned at two in output mechanism, just in case at this
Oil sealing damage, need first to pull down the roller bearing of upper end before changing oil sealing, and cannot typically realize in maintenance sites, so as to nothing
Method changes oil sealing, can only change whole gear-box ... problem above and both increase maintenance time and cost, and be likely to result in
Long-time is shut down, and causes huge economic loss.
Therefore, how to optimize the structure of driftage variable propeller gearbox, improve the convenience of maintenance, especially reduce dismounting operation
Difficulty, be the heat subject paid close attention in the industry.But, even to this day, do not have the document of this respect to be seen in report.
The content of the invention
It is an object of the present invention to be directed to current yawing speed reducer for wind power generation and the reducing gear of variable propeller gearbox and defeated
Go out after mechanism's two parts break down and influence each other, scene lifting and dismounting are difficult during maintenance, two roller bearings on output shaft
Between be used for seal lubrication oil sealing scene cannot scene change practical problem, it is defeated with variable propeller gearbox to yawing reducer
Go out end to be improved, there is provided the outfan of a kind of new wind driven generator yaw and variable propeller gearbox.
The object of the present invention is achieved like this：A kind of outfan of wind driven generator yaw and variable propeller gearbox, including
The power transmission shaft that outfan casing, the outfan of the final stage planet carrier for passing through sealing ring are docked with the outfan of final stage planet carrier, with
And output shaft spring bearing and sealing ring, it is characterised in that：
A) the outfan casing described in includes the supporting box of the rear box and power transmission shaft of final stage planet circular system, rear box and
Supporting box is bolted, and the outfan of planet carrier and power transmission shaft docking region are located between rear box and supporting box
Sealing space；The rear box is provided with purge cock, and the supporting box is provided with grease injection port；
B) outfan of final stage planet carrier is passed through and passes through bearings in the rear on casing, and bearing is placed in lubricating oil
In, framework type sealing ring is provided with the outside of bearing；Supporting box is provided with upper and lower two roller bearings, described grease injection
Mouth is located on the supporting box between upper and lower two roller bearings, and two roller bearings are placed in grease, their outside
It is provided with sealing ring；
C) sealing space that one end of power transmission shaft is placed between rear box and supporting box after passing through two roller bearings, passes
Moving axis is docked with the internal spline of final stage planet carrier outfan by the external splines of end, and the other end is placed in outside supporting box, end
It is provided with drive gear.
In the present invention：Upper and lower two roller bearings are positioned in supporting box by seam respectively, positioned at drive gear one
The power transmission shaft at end is provided with annular boss, and the power transmission shaft of the other end is provided with screw thread, is furnished with the bearing locking spiral shell matched with screw thread
Mother, after power transmission shaft passes through two roller bearings, annular boss is butted on the sealing ring with end, and the locking nut of the other end is threaded onto matching
Screw thread after be butted on sealing ring with end, form integrally-built driving-shaft assembly；Rear box and supporting box are connected by bolt
After connecing, the external splines of end part of driving shaft is docked with the internal spline of final stage planet carrier outfan.
In the present invention：Rear box and supporting box joint portion are provided with integrally pacifies for the docking of outfan casing and gear-box
The shared flange of dress.
In the present invention：The flange of gear-box integral installation is located on supporting box.
It is an advantage of the current invention that：Outfan of the yawing reducer with variable propeller gearbox is improved, traditional one
Body formula outfan casing is divided into the supporting box of the rear box and power transmission shaft of final stage planet circular system, traditional output shaft from gear
Referred to as power transmission shaft is separated in case, the outfan of planet carrier forms sealing space with the region of docking of power transmission shaft so that portion
Part realizes overall separation, and the relative weight for alleviating single installing component, the dismounting for gear-box provide very convenient bar
Part.As the outfan of final stage planet carrier is passed through and passes through bearings in the rear on casing, bearing is placed in lubricating oil, axle
The outside held is provided with framework type sealing ring；Supporting box is provided with upper and lower two roller bearings, described grease nipple position
On supporting box between upper and lower two roller bearings, two roller bearings are placed in grease, are provided with the outside of them
Sealing ring, so as to construct two different independent lubricating patterns for two separating components.Due to positioned at drive gear one end
Power transmission shaft is provided with annular boss, and the power transmission shaft of the other end is provided with screw thread, is furnished with the bearing lock nut matched with screw thread, passes
After moving axis passes through two roller bearings, annular boss is butted on the sealing ring with end, and the locking nut of the other end is threaded onto the spiral shell of matching
The sealing ring with end is butted on after stricture of vagina so that power transmission shaft can form completely self-contained part.
The present invention for driftage and the contribution of variable propeller gearbox is：Greatly reduce reducing gear and output mechanism two
Interactional probability after section failure, only keeps in repair and changes the part broken down as far as possible in gearbox fault；
And realize that two parts are separately lifted by crane and dismounted, greatly reduce the requirement to live loop wheel machine and dismounting space；Scene can also
Oil sealing between final stage planet carrier and rear box on reducing gear is changed directly.So as to greatly reduce maintenance time, and can be
Allow blower fan to recover normal to run in the very short time, the cost for reducing maintenance is, the economic loss for reducing owner.
Description of the drawings
Fig. 1 is the structural representation of the first embodiment of the invention.
Fig. 2 is the structural representation of second embodiment of the invention.
Fig. 3 is the structural representation of the third embodiment of the invention.
In figure：1, the outfan of final stage planet carrier；2, bearing；3, framework type sealing ring；4, rear box；5, supporting box；
6, power transmission shaft；7, sealing ring；8, upper roller bearing；9, lower roller bearing；10, sealing ring；11, bolt, 12, drive gear；13,
Purge cock；14, grease injection port；15, locking nut；16, flange；17, share flange.
Specific embodiment
Fig. 1, Fig. 2 and Fig. 3 individually disclose the concrete structure of different embodiments of the invention, below in conjunction with the accompanying drawings to this
Bright embodiment is further described.
From Fig. 1, Fig. 2 and Fig. 3, they be designed with outfan casing, pass through sealing ring final stage planet carrier output
End 1, the power transmission shaft docked with the outfan 1 of final stage planet carrier, and output shaft spring bearing and sealing ring, wherein：Outfan
Casing includes that the supporting box 5 of the rear box 4 and power transmission shaft of final stage planet circular system, rear box 4 and supporting box 5 pass through bolt 11
Connection, the outfan 1 of planet carrier and the docking of power transmission shaft 6 region are located at the sealing space between rear box 4 and supporting box 5；Institute
State rear box 4 and be provided with purge cock 13, the supporting box 5 is provided with grease injection port 14.The outfan 1 of final stage planet carrier
Pass through and pass through bearing 2 to be supported on the rear box 4, bearing 2 is placed in lubricating oil, the outside of bearing 2 is provided with skeleton close
Seal 3；Supporting box 5 is provided with roller bearing 8 and lower roller bearing 9, and described grease injection port 14 is located at upper Roller Shaft
Hold on the supporting box 5 between 8 and lower roller bearing 9, upper roller bearing 8 and lower roller bearing 9 are placed in grease, upper rolling
The outside of sub- bearing 8 is provided with sealing ring 7, and the outside of lower roller bearing 9 is provided with sealing ring 10.
The sealing that one end of power transmission shaft 6 is placed between rear box 4 and supporting box 5 after passing through two roller bearings 9 and 8 is empty
Between, power transmission shaft 6 is docked with the internal spline of final stage planet carrier outfan 1 by the external splines of end, and the other end is placed in supporting box 5
Outward, end is provided with drive gear 12.
In the present embodiment：Upper roller bearing 8 and lower roller bearing 9 are positioned in supporting box 5 by seam respectively, are located at
The power transmission shaft 6 of 12 one end of drive gear is provided with annular boss, and the power transmission shaft 6 of the other end is provided with screw thread, is furnished with and screw thread
The bearing lock nut 15 matched somebody with somebody, after power transmission shaft 6 passes through two roller bearings 8 and 9, annular boss is butted on the sealing ring 10 with end,
The locking nut 15 of the other end is butted on the sealing ring 7 with end after being threaded onto the screw thread of matching；Rear box 4 and supporting box 5 pass through spiral shell
After bolt 11 connects, the external splines of 6 end of power transmission shaft is docked with the internal spline of final stage planet carrier outfan 1.
In the embodiment described in Fig. 2 and Fig. 3：Flange 16 for gear-box integral installation is located at supporting box 5.
During installation, can first power transmission shaft 6 by the supporting box 5 between upper roller bearing 8 and lower roller bearing 9,
Sealing ring 7 and sealing ring 10 are installed, then after locking nut is compressed, make them form an integrally-built power transmission shaft total
Into, then grease is injected by grease injection port 14, then the base by bolt 11 with rear box 4 and installation position is fixed
（Structure as shown in Figure 1）, or first integrally-built driving-shaft assembly is fixed on the base of installation position by flange, then carry
Dock with rear box 4 for bolt 11（Structure as shown in Figure 2）.
During maintenance, only need reverse operating rear box 4 is separated with integrally-built driving-shaft assembly, gear box structure is entered
Row decomposes maintenance, substantially reduces the workload of maintenance.
Claims (4)
1. a kind of outfan of wind driven generator yaw and variable propeller gearbox, including outfan casing, the final stage for passing through sealing ring
The power transmission shaft that the outfan of planet carrier is docked with the outfan of final stage planet carrier, and output shaft spring bearing and sealing ring, its
It is characterised by：
A) the outfan casing described in includes the supporting box of the rear box and power transmission shaft of final stage planet circular system, rear box and
Support casing is bolted, and the outfan of planet carrier and power transmission shaft docking region are positioned at close between rear box and supporting box
Envelope space；The rear box is provided with purge cock, and the supporting box is provided with grease injection port；
B) outfan of final stage planet carrier is passed through and passes through bearings in the rear on casing, and bearing is placed in lubricating oil, axle
The outside held is provided with framework type sealing ring；Supporting box is provided with upper and lower two roller bearings, and described grease injection port is located at
On supporting box between upper and lower two roller bearings, two roller bearings are placed in grease, are provided with close on the outside of them
Seal；
C) sealing space that one end of power transmission shaft is placed between rear box and supporting box after passing through two roller bearings, transmission
Axle is docked with the internal spline of final stage planet carrier outfan by the external splines of end, and the other end is placed in outside supporting box, and end sets
There is drive gear.
2. the outfan of the wind driven generator yaw according to claim 1 and variable propeller gearbox, it is characterised in that：Up and down
Two roller bearings are positioned in supporting box by seam respectively, and the power transmission shaft positioned at drive gear one end is provided with convex annular
Platform, the power transmission shaft of the other end are provided with screw thread, are furnished with the bearing lock nut matched with screw thread, and power transmission shaft passes through two Roller Shafts
After holding, annular boss is butted on the sealing ring with end, and the locking nut of the other end is butted on the sealing with end after being threaded onto the screw thread of matching
Circle, forms integrally-built driving-shaft assembly；After rear box and supporting box are bolted, the external splines of end part of driving shaft
Dock with the internal spline of final stage planet carrier outfan.
3. the outfan of the wind driven generator yaw according to claim 1 or 2 and variable propeller gearbox, it is characterised in that：
Rear box and supporting box joint portion are provided with the shared flange for the docking of outfan casing and gear-box integral installation.
4. the outfan of wind driven generator yaw according to claim 3 and variable propeller gearbox, it is characterised in that：Gear-box
The flange of integral installation is located on supporting box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410823511.3A CN104500703B (en) | 2014-12-26 | 2014-12-26 | The outfan of wind driven generator yaw and variable propeller gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410823511.3A CN104500703B (en) | 2014-12-26 | 2014-12-26 | The outfan of wind driven generator yaw and variable propeller gearbox |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104500703A CN104500703A (en) | 2015-04-08 |
| CN104500703B true CN104500703B (en) | 2017-03-29 |
Family
ID=52942135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410823511.3A Active CN104500703B (en) | 2014-12-26 | 2014-12-26 | The outfan of wind driven generator yaw and variable propeller gearbox |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104500703B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443748B (en) * | 2015-12-28 | 2017-08-25 | 南京高速齿轮制造有限公司 | Driftage, the input of variable propeller gearbox |
| CN106594238B (en) * | 2016-12-28 | 2023-07-25 | 南京高速齿轮制造有限公司 | Dual-support output structure of wind power yaw gearbox |
| CN107191578B (en) * | 2017-05-23 | 2023-08-01 | 深圳市兆威机电股份有限公司 | Transmission output mechanism, gear box and assembly method of transmission output mechanism |
| CN108050021A (en) * | 2017-12-28 | 2018-05-18 | 南京高速齿轮制造有限公司 | More than 6MW increasing gear box for half-direct-driven wind generation |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201241791Y (en) * | 2008-07-11 | 2009-05-20 | 天津减速机股份有限公司 | Paddle-changeable gear reduction machine for wind power generation |
| CN103791035A (en) * | 2012-10-30 | 2014-05-14 | 吴小杰 | Wind power generation variable-pitch gear box with bearings lubricated by grease |
| CN204512367U (en) * | 2014-12-26 | 2015-07-29 | 南京高速齿轮制造有限公司 | The output terminal of wind driven generator yaw and variable propeller gearbox |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004190782A (en) * | 2002-12-11 | 2004-07-08 | Komatsu Ltd | Slidable contact seal structure on shaft part |
| JP5917362B2 (en) * | 2012-10-24 | 2016-05-11 | 住友重機械工業株式会社 | Power transmission device |
-
2014
- 2014-12-26 CN CN201410823511.3A patent/CN104500703B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201241791Y (en) * | 2008-07-11 | 2009-05-20 | 天津减速机股份有限公司 | Paddle-changeable gear reduction machine for wind power generation |
| CN103791035A (en) * | 2012-10-30 | 2014-05-14 | 吴小杰 | Wind power generation variable-pitch gear box with bearings lubricated by grease |
| CN204512367U (en) * | 2014-12-26 | 2015-07-29 | 南京高速齿轮制造有限公司 | The output terminal of wind driven generator yaw and variable propeller gearbox |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104500703A (en) | 2015-04-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202927015U (en) | Gear case, wind turbine, jointing element and end cap structure | |
| CN104500703B (en) | The outfan of wind driven generator yaw and variable propeller gearbox | |
| AU2012202813B2 (en) | Wind turbine nacelle | |
| CN201714592U (en) | Speed-increasing gear box for high-power wind power generator | |
| CN202579058U (en) | Acceleration gear box for wind driven generator with power of more than 2.5 megawatts | |
| CN206988415U (en) | A kind of 1663 kilowatts of wind turbine gearboxes | |
| CN201714590U (en) | Accelerating gearbox for wind power generator | |
| CN202194785U (en) | Horizontal shaft wind turbine unit and gear box device thereof | |
| CN106151438A (en) | There is the wind turbine gearbox of overload protection arrangement | |
| CN205101472U (en) | Tertiary reduction gear of electric motor car | |
| CN104482140A (en) | Planetary gearbox assembly | |
| US10571011B2 (en) | Gearbox assembly and method for maintaining an gearbox assembly | |
| CN206439346U (en) | Planetary reduction gear box | |
| CN202251832U (en) | Shell structure of speed reducing machine | |
| CN204512318U (en) | Planetary pinion box assembly | |
| CN203836089U (en) | LTM10 crawler unit | |
| CN204512367U (en) | The output terminal of wind driven generator yaw and variable propeller gearbox | |
| CN203272624U (en) | Grease lubrication soft start planetary differential reduction gear for bearing | |
| CN209511024U (en) | A kind of gear-box and hard rock mole | |
| CN209875902U (en) | Detachable parallel-level wind power generation main gearbox | |
| CN205446566U (en) | Planetary gear train assembly by embedded gear type circle structure | |
| CN104061316A (en) | Low-speed shaft supporting structure for wind power gear box | |
| CN206770528U (en) | A kind of 950 kilowatts of wind turbine gearboxes | |
| CN206770561U (en) | A kind of 825 kilowatts of wind turbine gearboxes | |
| CN206280441U (en) | Gear-box and Wind turbines |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190924 Address after: 211100 No. 30 Houjiao Road, Jiangning District, Nanjing City, Jiangsu Province (Jiangning High-tech Park) Co-patentee after: Nanjing High Precision Transmission Equipment Manufacturing Group Co.,Ltd. Patentee after: NANJING HIGH SPEED GEAR MANUFACTURING Co.,Ltd. Address before: Jiangning District of Nanjing City, Jiangsu province 211100 dry road Patentee before: NANJING HIGH SPEED GEAR MANUFACTURING Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200507 Address after: No. 30 Houjiao Road, Jiangning District, Nanjing, Jiangsu Province, 210000 (Jiangning High-tech Park) Patentee after: NANJING HIGH SPEED GEAR MANUFACTURING Co.,Ltd. Address before: 211100 No. 30 Houjiao Road, Jiangning District, Nanjing City, Jiangsu Province (Jiangning High-tech Park) Co-patentee before: Nanjing High Precision Transmission Equipment Manufacturing Group Co.,Ltd. Patentee before: NANJING HIGH SPEED GEAR MANUFACTURING Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220901 Address after: No.79 Jianheng Road, Jiangning District, Nanjing City, Jiangsu Province, 210000 Patentee after: NANJING HIGH-SPEED & ACCURATE GEAR GROUP Co.,Ltd. Address before: 210000 No.30, Houjiao Road, Jiangning District, Nanjing, Jiangsu Province Patentee before: NANJING HIGH SPEED GEAR MANUFACTURING Co.,Ltd. |
|
| TR01 | Transfer of patent right |