CN109653950A - Yaw blade pitch device - Google Patents
Yaw blade pitch device Download PDFInfo
- Publication number
- CN109653950A CN109653950A CN201811634942.XA CN201811634942A CN109653950A CN 109653950 A CN109653950 A CN 109653950A CN 201811634942 A CN201811634942 A CN 201811634942A CN 109653950 A CN109653950 A CN 109653950A
- Authority
- CN
- China
- Prior art keywords
- yaw
- gearbox
- motor
- pitch
- blade
- 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.)
- Granted
Links
- 230000008859 change Effects 0.000 claims abstract description 17
- 230000009467 reduction Effects 0.000 claims description 10
- 238000011161 development Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 238000009434 installation Methods 0.000 description 15
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 2
- 238000012356 Product development Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/0204—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor for orientation in relation to wind direction
-
- 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
- F03D15/00—Transmission of mechanical power
-
- 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
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/022—Adjusting aerodynamic properties of the blades
- F03D7/0224—Adjusting blade pitch
-
- 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
Abstract
The invention discloses a kind of yaw blade pitch devices, comprising: the yaw device to wind direction of the cabin for adjusting the vane change device of the Windward angle of the blade of wind-driven generator and for adjusting wind-driven generator；Vane change device includes: pitch motor, variable propeller gearbox, variable pitch output gear and blade bearing gear ring；Yaw device includes: yaw motor, Yaw gearbox, yaw output gear and yawing gear ring；Yawing gear ring is identical with the modulus of blade bearing gear ring and pressure angle is identical；Variable propeller gearbox is identical with the structure of Yaw gearbox；Yawing blade pitch device further includes the first base for installing variable propeller gearbox and the second base for installing Yaw gearbox；The base interface for connecting Yaw gearbox of the base interface and the second base for connecting variable propeller gearbox of first base is identical.Yaw gearbox and variable propeller gearbox have versatility, shorten the development cycle, reduce gear-box model, increase scale effect.
Description
Technical field
The present invention relates to a kind of yaw blade pitch devices.
Background technique
Yaw blade pitch device is the important component of wind power generating set, it includes motor, reduction gear box, toothed
Floating bearing.Wherein for Yawing mechanism for adjusting cabin to wind direction, blade pitch device improves wind for adjusting blade Windward angle
The generating efficiency of machine.And the Yawing mechanism of traditional blower and the architectural difference of blade pitch device are very big, need respectively individually to be set
Meter exploitation, production, test, packaging delivery, the development cycle is long, and at high cost, installation maintenance and management are inconvenient, improves the fortune of blower
Seek cost.
Summary of the invention
The present invention provides a kind of yaw blade pitch devices, adopt the following technical scheme that:
A kind of yaw blade pitch device, comprising: for adjusting the vane change device of the Windward angle of the blade of wind-driven generator and being used for
Adjust the yaw device to wind direction of the cabin of wind-driven generator；Vane change device includes: pitch motor, variable propeller gearbox, change
Paddle output gear and blade bearing gear ring；Pitch motor is connected to the input terminal of variable propeller gearbox；Variable pitch output gear is connected to
The output end of variable propeller gearbox；Variable pitch output gear is engaged with blade bearing gear ring；Yaw device includes: yaw motor, yaw
Gear-box, yaw output gear and yawing gear ring；Yaw motor is connected to the input terminal of Yaw gearbox；Output gear is yawed to connect
It is connected to the output end of Yaw gearbox；Yaw output gear is engaged with yawing gear ring；The mould of yawing gear ring and blade bearing gear ring
The identical and pressure angle of number is identical；Variable propeller gearbox is identical with the structure of Yaw gearbox；Yawing blade pitch device further includes for pacifying
Fill the first base of variable propeller gearbox and the second base for installing Yaw gearbox；First base is used to connect variable pitch tooth
The base interface of roller box and the base interface for connecting Yaw gearbox of the second base are identical.
Further, yaw blade pitch device includes at least the variable propeller gearbox of a redundancy or the Yaw gearbox of a redundancy.
Further, the ratio between width of yawing gear ring and blade bearing gear ring is more than or equal to 0.8 and is less than or equal to 1.2.
Further, the ratio between width of yawing gear ring and blade bearing gear ring is more than or equal to 0.9 and is less than or equal to 1.1.
Further, yaw motor is identical with pitch motor.Further, yaw motor and pitch motor are variable-frequency electric
Machine.
Further, yaw motor and pitch motor difference.Further, yaw motor is decelerating motor.
Further, yaw motor is the motor that number of pole-pairs is more than or equal to 8.
Further, at least one in yaw motor and pitch motor is hydraulic motor.Further, yaw motor and change
Paddle motor is hydraulic motor.
Further, blade bearing gear ring is ring gear；Yawing gear ring is outer gear ring.
Further, Yaw gearbox is identical with the reduction ratio of variable propeller gearbox, and reduction ratio is more than or equal to 100 and is less than etc.
In 500.
Further, the number of Yaw gearbox is greater than the number of variable propeller gearbox and the number of Yaw gearbox is greater than etc.
In 4.
The invention has the beneficial effects that the transmission of the variable propeller gearbox and Yaw gearbox of the yaw blade pitch device provided
Structure is identical, has versatility.Gear-box is not only contributed in this way to shorten the development cycle, reduce gear-box model, increase scale
Effect can also substantially reduce maintenance cycle and shut down cost, in addition be also beneficial to gear-box installation casting base, floating bearing
Processing, yaw pitch-controlled system installation and debugging.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of the vane change device of yaw blade pitch device of the invention；
Fig. 2 is that the structure in Fig. 1 removes the schematic diagram after the first base；
Fig. 3 is a kind of schematic diagram of the yaw device of yaw blade pitch device of the invention；
Fig. 4 is that the structure in Fig. 3 removes the schematic diagram after the second base.
Vane change device 10, pitch motor 11, variable propeller gearbox 12, variable pitch output gear 13, blade bearing gear ring 14, first
Base 15, yaw device 20, yaw motor 21, Yaw gearbox 22 yaw output gear 23, yawing gear ring 24, yaw installation
Flange 25, the second base 26.
Specific embodiment
Specific introduce is made to the present invention below in conjunction with the drawings and specific embodiments.
As shown in Figures 1 to 4, a kind of yaw blade pitch device, comprising: vane change device 10 and yaw device 20.Vane change device
The Windward angle of 10 blade for adjusting wind-driven generator.Yaw device 20 be used for adjust wind-driven generator cabin to wind
Direction.
Vane change device 10 includes: pitch motor 11, variable propeller gearbox 12, variable pitch output gear 13 and blade bearing gear ring
14.Pitch motor 11 is connected to the input terminal of variable propeller gearbox 12.Variable pitch output gear 13 is connected to the defeated of variable propeller gearbox 12
Outlet.Variable pitch output gear 13 is engaged with blade bearing gear ring 14.
Specifically, the power transfer that inputs pitch motor 11 of variable propeller gearbox 12 is to variable pitch output gear 13 to drive
Variable pitch output gear 13.13 driving blade bearing gear ring 14 of variable pitch output gear is met with the blade of realization adjustment wind-driven generator
Wind angle.
Yaw device 20 includes: yaw motor 21, Yaw gearbox 22, yaw output gear 23 and yawing gear ring 24.Partially
Boat motor 21 is connected to the input terminal of Yaw gearbox 22.Yaw output gear 23 is connected to the output end of Yaw gearbox 22.
Yaw output gear 23 is engaged with yawing gear ring 24.
Specifically, the power transfer extremely yaw output gear 23 that Yaw gearbox 22 inputs yaw motor 21 is to drive
Yaw output gear 23.Yawing output gear 23 drives yawing gear ring 24 with the cabin of realization adjustment wind-driven generator to wind side
To.
Yawing gear ring 24 is identical with the modulus of blade bearing gear ring 14 and pressure angle is identical.Specifically, variable propeller gearbox
12 is identical with the structure of Yaw gearbox 22.Make variable propeller gearbox 12 and Yaw gearbox 22 during installation can be mutual in this way
Change, in order to wherein one need repairing or replace when, can be replaced with another.It can be reduced gear-box in this way
Model increases scale effect, and reduces maintenance cycle and shut down cost, is in addition also beneficial to gear-box installation casting base, returns
The installation and debugging of processing, yaw pitch-controlled system that shaft is held.
Yaw blade pitch device further includes the first base 15 for installing variable propeller gearbox 12 and for installing yaw gear
Second base 26 of case 22.First base 15 is used to connect the base interface of variable propeller gearbox 12 and being used for for the second base 26
The base interface for connecting Yaw gearbox 22 is identical.
Specifically, the first base 15 is identical with the base interface of the second base 26, so that the first base 15 and the second machine
Seat 26 has versatility.The two may be incorporated for installation variable propeller gearbox 12 or Yaw gearbox 22.It in this way can be with
Shorten product development cycle, conveniently manage and maintain, reduces blower buying and operation cost.
As a kind of scheme, blade bearing gear ring 14 and yawing gear ring 24 are each formed with multiple mounting holes.As a kind of tool
The scheme of body, yaw device 20 further include yaw mounting flange 25.Yaw mounting flange 25 be fixed to Yaw gearbox 22 or
The second base of a part 26 as Yaw gearbox 22.It is realized and is yawed to the second base 26 by the yaw installation of mounting flange 25
The installation of gear-box 22.Yaw mounting flange 25 is formed with multiple bolts hole.Mounting flange 25 is bolted to the second machine
Seat 26.Equally, vane change device 10 further includes variable pitch mounting flange.Variable pitch mounting flange is fixed to variable propeller gearbox 12 or as change
A part of propeller gearbox 12.The installation for realizing variable propeller gearbox 12 is installed by variable pitch mounting flange to the first base 15.Become
Paddle mounting flange is formed with multiple bolts hole.Specifically, position, quantity and the ruler of the bolt hole that variable pitch mounting flange is formed
It is very little identical as the position of the bolt hole of the yaw formation of mounting flange 25, quantity and size.Further, variable pitch mounting flange
It is identical as yaw mounting flange.As a kind of specific embodiment, the first base 15 be formed with for variable pitch mounting flange
Compatible base interface.Second base 26 is formed with for base interface compatible with yaw mounting flange.First base
15 identical with the base interface of the second base 26 make Yaw gearbox 22 and variable propeller gearbox 12 that installation can be interchanged.It is more specific and
Speech, the entirety and pitch motor 11, variable propeller gearbox 12 that yaw motor 21, Yaw gearbox 22 and yaw output gear 23 are constituted
The entirety constituted with variable pitch output gear 13 can exchange installation.As a preferred embodiment, yawing gear ring 24 and leaf
The ratio between width of piece bearing gear ring 14 is more than or equal to 0.8 and is less than or equal to 1.2.
As a preferred embodiment, the ratio between yawing gear ring 24 and the width of blade bearing gear ring 14 are more than or equal to
0.9 and be less than or equal to 1.1.
Specifically, yawing gear ring 24 is close with the width dimensions of blade bearing gear ring 14, in variable propeller gearbox 12 and partially
Boat gear-box 22 is easily installed when exchanging.
Yaw motor 21 and pitch motor 11 are used for output power, can be hydraulic motor and are also possible to be with electric power
The motor of power.
As a preferred embodiment, yaw motor 21 and pitch motor 11 are identical.As a kind of specific implementation
Mode, yaw motor 21 and pitch motor 11 are variable-frequency motor.
As an alternative embodiment, yaw motor and pitch motor difference.As a kind of specific embodiment,
Yaw motor is decelerating motor.
As an alternative embodiment, yaw motor is the motor that number of pole-pairs is more than or equal to 8.
Yaw motor and pitch motor are arranged according to above-mentioned scheme, can guarantee the step of reduction of Yaw gearbox.
As a kind of specific embodiment, blade bearing gear ring 14 is ring gear.Yawing gear ring 24 is outer gear ring.As
A kind of optional embodiment, blade bearing gear ring may be outer gear ring；Yawing gear ring may be ring gear.That is sharf
It holds gear ring and yawing gear ring can be outer gear ring or be ring gear.
In conclusion the vane change device 10 of yaw blade pitch device is identical with the drive mechanism of yaw device 20, have general
Property.Gear-box is not only contributed in this way to shorten the development cycle, reduce gear-box model, increase scale effect, can also be dropped significantly
In addition low maintenance cycle and shutdown cost are also beneficial to gear-box installation casting base, the processing of floating bearing, yaw variable pitch system
The installation and debugging of system.
Its deceleration of traditional variable propeller gearbox is smaller, range be 100 to 350, output torque is smaller, volume and weight compared with
Gently.And its reduction ratio range of traditional Yaw gearbox, 600 to 3500, output torque, volume and weight are much larger than variable pitch
Gear-box.Traditional variable propeller gearbox and Yaw gearbox are difficult to exchange.
It is identical with the reduction ratio of variable propeller gearbox 12 using Yaw gearbox 22, reduction ratio is more than or equal to 100 and is less than etc.
In 500.The number of Yaw gearbox 22 is greater than the number of variable propeller gearbox 12 and the number of Yaw gearbox 22 is more than or equal to 4.
The reduction ratio had not only met the torque and speed demand of variable pitch, but also met the needs of yaw to a certain extent.Yaw gearbox 22
The more realization for facilitating driftage function of number.The Yaw gearbox of one redundancy can be at least set in cabin, if leaf
The variable propeller gearbox of piece breaks down when needing replacing, and the Yaw gearbox for the redundancy that can dismantle is used to replace up.
As an alternative embodiment, the number of variable propeller gearbox is more than or equal to 2.In other words, for adjustment one
The number of the variable propeller gearbox of blade is more than or equal to 2.The variable propeller gearbox of redundancy can be set.If event occurs for Yaw gearbox
When barrier needs replacing, the variable propeller gearbox 12 for the redundancy that can dismantle is used to replace the Yaw gearbox to break down.
The basic principles, main features and advantages of the invention have been shown and described above.The technical staff of the industry should
Understand, the above embodiments do not limit the invention in any form, all obtained by the way of equivalent substitution or equivalent transformation
Technical solution is fallen within the scope of protection of the present invention.
Claims (10)
1. a kind of yaw blade pitch device characterized by comprising for adjusting the change of the Windward angle of the blade of wind-driven generator
The yaw device to wind direction of paddle device and the cabin for adjusting wind-driven generator；The vane change device includes: variable pitch horse
It reaches, variable propeller gearbox, variable pitch output gear and blade bearing gear ring；The pitch motor is connected to the defeated of the variable propeller gearbox
Enter end；The variable pitch output gear is connected to the output end of the variable propeller gearbox；The variable pitch output gear and the blade
The engagement of bearing gear ring；The yaw device includes: yaw motor, Yaw gearbox, yaw output gear and yawing gear ring；It is described
Yaw motor is connected to the input terminal of the Yaw gearbox；The yaw output gear is connected to the defeated of the Yaw gearbox
Outlet；The yaw output gear is engaged with the yawing gear ring；The modulus of the yawing gear ring and the blade bearing gear ring
Identical and pressure angle is identical；The variable propeller gearbox is identical with the structure of the Yaw gearbox；The yaw blade pitch device is also
Including the first base for installing the variable propeller gearbox and the second base for installing the Yaw gearbox；Described
The base interface for connecting the variable propeller gearbox of one base and the second base for connecting the Yaw gearbox
Base interface is identical.
2. yaw blade pitch device according to claim 1, which is characterized in that it is superfluous that the yaw blade pitch device includes at least one
The Yaw gearbox of remaining variable propeller gearbox or a redundancy.
3. yaw blade pitch device according to claim 1, which is characterized in that the yawing gear ring and the blade bearing tooth
The ratio between width of circle is more than or equal to 0.9 and is less than or equal to 1.1.
4. yaw blade pitch device according to claim 1, which is characterized in that
The yaw motor is identical with the pitch motor.
5. yaw blade pitch device according to claim 4, sign is,
The yaw motor and the pitch motor are variable-frequency motor.
6. yaw blade pitch device according to claim 1, which is characterized in that
The yaw motor is different with the pitch motor.
7. yaw blade pitch device according to claim 6, which is characterized in that
The yaw motor is decelerating motor.
8. yaw blade pitch device according to claim 1, which is characterized in that
At least one in the yaw motor and the pitch motor is hydraulic motor.
9. according to claim 1 to yaw blade pitch device described in 8 any one, which is characterized in that
The Yaw gearbox is identical with the reduction ratio of the variable propeller gearbox, and the reduction ratio is more than or equal to 100 and is less than etc.
In 500.
10. according to claim 1 to yaw blade pitch device described in 8 any one, which is characterized in that
The number of the Yaw gearbox is greater than the number of variable propeller gearbox and the number of the Yaw gearbox is more than or equal to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811634942.XA CN109653950B (en) | 2018-12-29 | 2018-12-29 | Yaw pitch mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811634942.XA CN109653950B (en) | 2018-12-29 | 2018-12-29 | Yaw pitch mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109653950A true CN109653950A (en) | 2019-04-19 |
| CN109653950B CN109653950B (en) | 2023-08-29 |
Family
ID=66117010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811634942.XA Active CN109653950B (en) | 2018-12-29 | 2018-12-29 | Yaw pitch mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109653950B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111396498A (en) * | 2019-12-06 | 2020-07-10 | 浙江运达风电股份有限公司 | Nonlinear vibration damper for wind turbine tower |
| CN114060214A (en) * | 2021-11-16 | 2022-02-18 | 向雨 | Yaw device |
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|---|---|---|---|---|
| JP2010001996A (en) * | 2008-06-20 | 2010-01-07 | Ntn Corp | Rolling bearing for wind power generator |
| WO2012030326A1 (en) * | 2010-08-31 | 2012-03-08 | Moog Inc. | Gear assembly for turbine control actuators |
| EP2574782A2 (en) * | 2011-09-27 | 2013-04-03 | Nabtesco Corporation | Driving device for wind turbine |
| CN103066747A (en) * | 2011-10-18 | 2013-04-24 | 吴小杰 | Permanent magnet yawing and variable pitch cycloid reduction box for wind power generation |
| CN103061997A (en) * | 2011-10-18 | 2013-04-24 | 吴小杰 | Wind power constant brake permanent magnetic yaw-variable pitch hypocycloid reduction gear box |
| CN105422382A (en) * | 2015-12-28 | 2016-03-23 | 南京高速齿轮制造有限公司 | Yawing variable-pitch drive unit with overload protection function |
-
2018
- 2018-12-29 CN CN201811634942.XA patent/CN109653950B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010001996A (en) * | 2008-06-20 | 2010-01-07 | Ntn Corp | Rolling bearing for wind power generator |
| WO2012030326A1 (en) * | 2010-08-31 | 2012-03-08 | Moog Inc. | Gear assembly for turbine control actuators |
| EP2574782A2 (en) * | 2011-09-27 | 2013-04-03 | Nabtesco Corporation | Driving device for wind turbine |
| CN103066747A (en) * | 2011-10-18 | 2013-04-24 | 吴小杰 | Permanent magnet yawing and variable pitch cycloid reduction box for wind power generation |
| CN103061997A (en) * | 2011-10-18 | 2013-04-24 | 吴小杰 | Wind power constant brake permanent magnetic yaw-variable pitch hypocycloid reduction gear box |
| CN105422382A (en) * | 2015-12-28 | 2016-03-23 | 南京高速齿轮制造有限公司 | Yawing variable-pitch drive unit with overload protection function |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111396498A (en) * | 2019-12-06 | 2020-07-10 | 浙江运达风电股份有限公司 | Nonlinear vibration damper for wind turbine tower |
| CN111396498B (en) * | 2019-12-06 | 2021-08-17 | 浙江运达风电股份有限公司 | Nonlinear vibration damper for wind turbine tower |
| CN114060214A (en) * | 2021-11-16 | 2022-02-18 | 向雨 | Yaw device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109653950B (en) | 2023-08-29 |
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Effective date of registration: 20190926 Address after: 211103 Jiangning Science Park, Nanjing, Jiangsu, 1 Tianyuan East Road. Applicant after: NANJING HIGH SPEED GEAR MANUFACTURING Co.,Ltd. Applicant after: Nanjing High Precision Transmission Equipment Manufacturing Group Co.,Ltd. Address before: 211103 Jiangning Science Park, Nanjing, Jiangsu, 1 Tianyuan East Road. Applicant before: NANJING HIGH SPEED GEAR MANUFACTURING Co.,Ltd. |
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Effective date of registration: 20200511 Address after: 211103 No.30, Houjiao Road, gaoxinyuan, Jiangning District, Nanjing City, Jiangsu Province Applicant after: NANJING HIGH SPEED GEAR MANUFACTURING Co.,Ltd. Address before: 211103 Jiangning Science Park, Nanjing, Jiangsu, 1 Tianyuan East Road. Applicant before: NANJING HIGH SPEED GEAR MANUFACTURING Co.,Ltd. Applicant before: Nanjing High Precision Transmission Equipment Manufacturing Group Co.,Ltd. |
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