CN110081151A - Double-arm wind turbine gearbox testing stand connects pedestal - Google Patents
Double-arm wind turbine gearbox testing stand connects pedestal Download PDFInfo
- Publication number
- CN110081151A CN110081151A CN201910484212.4A CN201910484212A CN110081151A CN 110081151 A CN110081151 A CN 110081151A CN 201910484212 A CN201910484212 A CN 201910484212A CN 110081151 A CN110081151 A CN 110081151A
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- Prior art keywords
- wind turbine
- screw
- double
- support base
- bearing block
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- 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.)
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Links
- 238000012360 testing method Methods 0.000 title claims abstract description 31
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 230000000712 assembly Effects 0.000 claims abstract description 3
- 238000000429 assembly Methods 0.000 claims abstract description 3
- 230000005540 biological transmission Effects 0.000 claims description 13
- 238000009434 installation Methods 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 241000237858 Gastropoda Species 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 230000001360 synchronised effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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
- F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
- F16H57/022—Adjustment of gear shafts or 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
- F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
- F16H57/022—Adjustment of gear shafts or bearings
- F16H2057/0221—Axial adjustment
-
- 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
- F16H57/022—Adjustment of gear shafts or bearings
- F16H2057/0222—Lateral adjustment
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses a kind of double-arm wind turbine gearbox testing stands to connect pedestal, comprising: two base assemblies for being supported to stiff shaft；Base assembly include: the bearing for being set in the periphery of stiff shaft, the bearing block for installing bearing, support base, for adjust adjust bearing block relative to the ball-screw apparatus of the height of support base, the motor for driving ball-screw apparatus and for locking locking device of the bearing block relative to the position of support base；Bearing block is slidingly attached to support base；Locking device includes: several latch segments for clamping locking bearing block from two sides by external hydraulic system driving；The two sides of support base are equipped with the through-hole passed through for latch segment.Double-arm wind turbine gearbox testing stand of the invention connects pedestal, and versatility is high.
Description
Technical field
The present invention relates to a kind of double-arm wind turbine gearbox testing stands to connect pedestal.
Background technique
Wind turbine gearbox test generallys use face-to-face gear box structure layout, and there are three types of the connections between two gear-boxes
Mode:
Scheme one: low speed input shaft is connected directly by flange, and simplicity does not need special tooling, but is not easy to connection centering, is held
The problems such as easily causing rack vibration, gear blue oil test exception.
Scheme two: introducing flexible connection on the basis of scheme one, and such as common barreled tooth flank connects.This connection type is conducive to
Installation but and fan operation state deviation it is big.
Scheme three: introducing bearing block and stiff shaft combined connection apparatus is attached.Attachment device includes support base, axis
It holds, stiff shaft and two end flanges.Attachment device approaches test mode and fan operation state but since support base is grounded height
Degree can not be adjusted, and can not be suitable for various types of gear-boxes and be tested, poor universality.
Summary of the invention
In order to solve the deficiencies in the prior art, the present invention provides a kind of double-arm wind turbine gearbox testing stands to connect bottom
Seat has preferable versatility.
In order to achieve the above objectives, the present invention uses following scheme:
A kind of double-arm wind turbine gearbox testing stand connection pedestal, comprising: two pedestal groups for being supported to stiff shaft
Part；Base assembly include: the bearing for being set in the periphery of stiff shaft, the bearing block for installing bearing, support base, for adjusting
Bearing block is adjusted relative to the ball-screw apparatus of the height of support base, the motor for driving ball-screw apparatus and for locking
Determine locking device of the bearing block relative to the position of support base；Bearing block is slidingly attached to support base；Locking device includes: by outer
Hydraulic system driving in portion's clamps several latch segments of locking bearing block from two sides；The two sides of support base are equipped with and pass through for latch segment
Through-hole.
Further, ball-screw apparatus includes: shell, worm gear, worm screw, feed screw nut and lead screw；Worm gear and worm screw peace
It is filled to shell；Worm gear and worm screw engagement；Feed screw nut is connected to worm gear and worm gear rotates synchronously；Bearing block is connected to lead screw；Electricity
Machine drives worm screw rotation；Worm screw drives worm gear rotation；Feed screw nut rotation drives lead screw sliding.
Further, ball-screw apparatus there are two being set on a support base；Motor drives two ball-screw dresses simultaneously
Two worm screws set.
Further, base assembly further include: the gear-box of transmission is realized between motor and ball-screw apparatus；Gear
Case includes: cabinet, active worm screw, driven worm gear and transmission shaft；Cabinet is fixed to support base；Active worm screw and the installation of driven worm gear
To cabinet；The rotation of motor driven active worm screw；Active worm screw and the engagement of driven worm gear；Transmission shaft be fixed to driven worm gear and with from
Dynamic worm gear rotates synchronously；The both ends of transmission shaft pass through shaft coupling respectively and are connected to two worm screws.
Further, worm gear is set in the periphery of feed screw nut and constitutes with feed screw nut and is keyed.
Further, ball-screw apparatus further include: for limiting two thrust bearings of the axial position of feed screw nut；
Two thrust bearings are set to the both ends of feed screw nut；Thrust bearing is installed to shell.
Further, feed screw nut includes: upper section, middle section and lower section；Middle section size in the radial direction is greater than upper section under
Section size in the radial direction；Two thrust bearings are sheathed with the periphery of upper section and lower section respectively；Middle section and worm gear, which are constituted, to be keyed.
Further, ball-screw apparatus further include: for connecting the link block of lead screw and bearing block；Link block is fixed to
Lead screw；Link block is bolted to the top of bearing block.
Further, latch segment is equipped with locking post；Locking post passes through through-hole.
Further, double-arm wind turbine gearbox testing stand connects pedestal further include: guide support seat is slided to adjust two
The guide rail of distance between a support base.
The invention has the beneficial effects that having preferable versatility.
The height of bearing block can be adjusted to adjust the height of stiff shaft, to be adapted to different gear-boxes.
The position of support base can be adjusted to adjust stiff shaft of the span to be adapted to different length.
Ball-screw apparatus compares other hydraulic lifting apparatus, improves bearing block axial direction horizontal accuracy and transversely and horizontally essence
Degree has preferable accuracy of alignment, can meet the test demand of higher accuracy of alignment.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of double-arm wind turbine gearbox testing stand connection pedestal of the invention；
Fig. 2 is the schematic diagram of double-arm wind turbine gearbox testing stand connection pedestal installation stiff shaft in Fig. 1；
Fig. 3 is the schematic diagram of the part-structure of double-arm wind turbine gearbox testing stand connection pedestal in Fig. 1；
Fig. 4 is the schematic diagram of the internal structure of the ball-screw apparatus of double-arm wind turbine gearbox testing stand connection pedestal in Fig. 1；
Fig. 5 is the explosive view of structure in Fig. 4；
Fig. 6 is the schematic diagram of the locking device of double-arm wind turbine gearbox testing stand connection pedestal in Fig. 1.
Double-arm wind turbine gearbox testing stand connects pedestal 100, base assembly 110, bearing 10, bearing block 20, support base
30, through-hole 31, ball-screw apparatus 40, shell 41, worm gear 42, worm screw 43, feed screw nut 44, lead screw 45, key 46, thrust bearing
47, link block 48, motor 50, locking device 60, latch segment 61, locking post 62, stiff shaft 200.
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 6, a kind of double-arm wind turbine gearbox testing stand connects pedestal 100, comprising: for rigidity
Two base assemblies 110 that axis 200 is supported.The both ends of stiff shaft 200 are respectively connected to two wind-powered electricity generation teeth tested
Roller box.The both ends of stiff shaft 200 are equipped with flange.Stiff shaft 200 passes through flanged joint to wind turbine gearbox.
Base assembly 110 includes: bearing 10, bearing block 20, support base 30, ball-screw apparatus 40, motor 50 and locking
Device 60.
Bearing 10 is set on the periphery of stiff shaft 200.Bearing 10 is installed to bearing block 20.Specifically, bearing 10 is
Tapered roller bearing.
The two sides of support base 30 are arranged to saddle-shape.The angle of two sides reinforcing rib is set as 15 degree to 30 degree.Ball wire
Thick stick device 40 is for adjusting height of the bearing block 20 relative to support base 30.By the height to bearing block 20 be adjusted to
The height of stiff shaft 200 is adjusted, realizes the wind turbine gearbox for being adapted to different models.Convenient for the wind turbine gearbox to different model
It is tested, versatility is high.
Motor 50 drives the height adjustment of the realization bearing block 20 of ball-screw apparatus 40.Locking device 60 is for locking bearing
Position of the seat 20 relative to support base 30.After completing to adjust, the position of bearing block 20 is locked by locking device 60.It is specific and
Speech locks the position of bearing block 20 by external hydraulic system.Bearing block 20 is slidingly attached to support base 30.
Locking device 60 includes: latch segment 61.Latch segment 61 is driven from two sides by external hydraulic system and clamps locking bearing
Seat 20.
The two sides of bearing block 20 are equipped with latch segment 61.The height of two latch segments 61 is identical.Bearing block 20 is arranged in pairs
There are several latch segments 61.The height for the latch segment 61 being arranged in pairs is identical.Specifically, bearing block 20 is equipped with two pairs of latch segments
61.Two pairs of latch segments 61 arrange in the height direction.The two sides of bearing block 20 are all provided with there are two latch segment 61.One bearing block 20
Equipped with 4 latch segments 61.Bearing block 20 is locked by 4 latch segments 61.
As a kind of specific embodiment, support base 30 is equipped with through-hole 31.The two sides of support base 30 slot to be formed it is logical
Hole 31.Latch segment 61 passes through through-hole 31.Latch segment 61 is formed with locking post 62.Locking post 62 passes through through-hole 31.Through-hole 31 is grown up
Strip can be oriented to locking post 62 and slide along short transverse.
As a kind of specific embodiment, ball-screw apparatus 40 includes: shell 41, worm gear 42, worm screw 43, lead screw spiral shell
Mother 44 and lead screw 45.Worm gear 42 and worm screw 43 are installed to shell 41.Worm gear 42 and worm screw 43 engage.Feed screw nut 44 is connected to snail
Wheel 42 is rotated synchronously with worm gear 42.Bearing block 20 is connected to lead screw 45.Specifically, ball-screw apparatus 40 further include: connection
Block 48.Link block 48 is for connecting lead screw 45 and bearing block 20.Link block 48 is fixed to lead screw 45.Link block 48 is solid by bolt
Determine to the top of bearing block 20.
Motor 50 drives worm screw 43 to rotate.Worm screw 43 drives worm gear 42 to rotate.The rotation of feed screw nut 44 drives lead screw 45 sliding
It is dynamic.
As a kind of specific embodiment, set on a support base 30 there are two ball-screw apparatus 40.Motor 50 is same
When drive two ball-screw apparatus 40 two worm screws 43.
As a kind of specific embodiment, base assembly 110 further include: between motor 50 and ball-screw apparatus 40
Realize the gear-box of transmission.Gear-box includes: cabinet, active worm screw, driven worm gear and transmission shaft.Cabinet is fixed to support base
30.Active worm screw and driven worm gear are installed to cabinet.Motor 50 drives the rotation of active worm screw.Active worm screw and driven worm gear are nibbled
It closes.Transmission shaft is fixed to driven worm gear and rotates synchronously with driven worm gear.The both ends of transmission shaft are connected to by shaft coupling respectively
Two worm screws 43.
The horizontal input torque of transmission shaft is converted into vertical direction torque, 44 He of feed screw nut by worm gear 42 and worm screw 43
Lead screw 45 converts vertical lifting force for vertical direction torque again, promotes the height of bearing block 20 to realize and move up and down.
As a kind of specific embodiment, worm gear 42 is set in the periphery of feed screw nut 44 and constitutes with feed screw nut 44
Key connection.
As a kind of specific embodiment, ball-screw apparatus 40 further include: for limiting the axial direction of feed screw nut 44
Two thrust bearings 47 of position.Two thrust bearings 47 are set to the both ends of feed screw nut 44.Thrust bearing 47 is installed to shell
Body 41.
As a kind of specific embodiment, feed screw nut 44 includes: upper section, middle section and lower section.Middle section is in the radial direction
Size is greater than upper section and lower section size in the radial direction.Two thrust bearings 47 are sheathed with the periphery of upper section and lower section respectively.In
Section is constituted with worm gear 42 and is keyed.The periphery of feed screw nut 44 is equipped with 4 keyways.Worm gear 42 passes through 4 keys 46 and feed screw nut
44 constitute key connection.4 keys 46 are around the feed screw nut 44 and are uniformly distributed in the circumferential.
As a preferred embodiment, double-arm wind turbine gearbox testing stand connection pedestal 100 includes: guide rail.It leads
Rail guide support seat 30 is slided to adjust distance between two support bases 30.Cooperate specifically, support base 30 is equipped with guide rail
Guide groove.Specifically, guide groove is set to the bottom of support base 30.Span is realized in sliding by support base 30 relative to guide rail
Adjusting.It is fixed after the completion of adjusting by position of the foundation bolt to support base 30.
Installation and operation instruction, 1. adjust the axial distance of two support bases 30 according to the span of stiff shaft 200, guarantee branch
The bottom of seat 30 is supportted in identical track, axial alignment.After completing span adjusting, by submitting bolt fixed supporting seat 30.
2. installation bearing block 20 connects hydraulic device respectively, being not pressurized adjusting bearing block 20 makes left and right sides initial level.By bearing block
20 top is attached and is fixed with bolt with link block 48.3. 20 height of bearing block is adjusted, according to the type of wind turbine gearbox
Number and height, starting motor 50 adjust bearing block 20 height.Two bearing blocks 20 can be measured by infrared horizontal scanner
The height at top finely tunes ball-screw apparatus 40, guarantees that two bearing blocks, 20 top in same level, realizes stiff shaft
200 level.4. according to the gravity of stiff shaft 200, pressure needed for each hydraulic cylinder of Conservative estimation, while to 8 hydraulic cylinders
Apply pressure, fixed bearing block 20.
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 double-arm wind turbine gearbox testing stand connects pedestal characterized by comprising for being supported to stiff shaft
Two base assemblies；The base assembly includes: the bearing for being set in the periphery of stiff shaft, the axis for installing the bearing
Hold seat, support base, for adjust the bearing block relative to the ball-screw apparatus of the height of the support base, for driving
State the motor of ball-screw apparatus and for locking locking device of the bearing block relative to the position of the support base；It is described
Bearing block is slidingly attached to the support base；The locking device includes: to be clamped to lock from two sides by external hydraulic system driving
Several latch segments of the bearing block；The two sides of the support base are equipped with the through-hole passed through for the latch segment.
2. double-arm wind turbine gearbox testing stand according to claim 1 connects pedestal, which is characterized in that
The ball-screw apparatus includes: shell, worm gear, worm screw, feed screw nut and lead screw；The worm gear and worm screw installation
To the shell；The worm gear and worm screw engagement；The feed screw nut is connected to synchronous with the worm gear turn of the worm gear
It is dynamic；The bearing block is connected to the lead screw；The rotation of worm screw described in the motor driven；The worm screw drives the worm gear to turn
It is dynamic；The feed screw nut rotation drives the lead screw sliding.
3. double-arm wind turbine gearbox testing stand according to claim 2 connects pedestal, which is characterized in that
The ball-screw apparatus there are two being set on one support base；The motor drives two ball-screws simultaneously
Two worm screws of device.
4. double-arm wind turbine gearbox testing stand according to claim 3 connects pedestal, which is characterized in that
The base assembly further include: the gear-box of transmission is realized between the motor and the ball-screw apparatus；It is described
Gear-box includes: cabinet, active worm screw, driven worm gear and transmission shaft；The cabinet is fixed to the support base；The active snail
Bar and the driven worm gear are installed to the cabinet；The rotation of active worm screw described in the motor driven；The active worm screw and institute
State driven worm gear engagement；The transmission shaft is fixed to the driven worm gear and rotates synchronously with the driven worm gear；The transmission
The both ends of axis pass through shaft coupling respectively and are connected to two worm screws.
5. double-arm wind turbine gearbox testing stand according to claim 2 connects pedestal, which is characterized in that
The worm gear is set in the periphery of the feed screw nut and constitutes with the feed screw nut and is keyed.
6. double-arm wind turbine gearbox testing stand according to claim 5 connects pedestal, which is characterized in that
The ball-screw apparatus further include: for limiting two thrust bearings of the axial position of the feed screw nut；Two
The thrust bearing is set to the both ends of the feed screw nut；The thrust bearing is installed to the shell.
7. double-arm wind turbine gearbox testing stand according to claim 6 connects pedestal, which is characterized in that
The feed screw nut includes: upper section, middle section and lower section；The middle section size in the radial direction is greater than the upper section and described
Lower section size in the radial direction；Two thrust bearings are sheathed with the periphery of the upper section and the lower section respectively；In described
Section is constituted with the worm gear and is keyed.
8. double-arm wind turbine gearbox testing stand according to claim 2 connects pedestal, which is characterized in that
The ball-screw apparatus further include: for connecting the link block of the lead screw and the bearing block；The link block is solid
The fixed extremely lead screw；The link block is bolted to the top of the bearing block.
9. double-arm wind turbine gearbox testing stand according to claim 1 connects pedestal, which is characterized in that
The latch segment is equipped with locking post；The locking post passes through the through-hole.
10. connecting pedestal to double-arm wind turbine gearbox testing stand described in 9 any one according to claim 1, feature exists
In,
The double-arm wind turbine gearbox testing stand connects pedestal further include: is oriented to the support base sliding to adjust described in two
The guide rail of distance between support base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910484212.4A CN110081151B (en) | 2019-06-05 | 2019-06-05 | Double-arm wind power gear box test bed connecting base |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910484212.4A CN110081151B (en) | 2019-06-05 | 2019-06-05 | Double-arm wind power gear box test bed connecting base |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110081151A true CN110081151A (en) | 2019-08-02 |
| CN110081151B CN110081151B (en) | 2024-05-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910484212.4A Active CN110081151B (en) | 2019-06-05 | 2019-06-05 | Double-arm wind power gear box test bed connecting base |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110081151B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040039926A (en) * | 2002-11-05 | 2004-05-12 | 주식회사 포스코 | Device of assembling for rolling equipment and metal bearing in large dynamo |
| CN101246082A (en) * | 2008-02-29 | 2008-08-20 | 西安交通大学 | Multi-fault coupling gear box simulated experiment bench |
| CN205300927U (en) * | 2016-01-06 | 2016-06-08 | 吉林大学 | Area is from unloaded running -in test bench of positioning and clamping device's that feels relieved gear box |
| CN107271180A (en) * | 2017-06-18 | 2017-10-20 | 南京理工大学 | A kind of planetary roller screw integrates load testing machine |
| CN210178877U (en) * | 2019-06-05 | 2020-03-24 | 南京高速齿轮制造有限公司 | Double-arm type wind power gear box test bed connecting base |
-
2019
- 2019-06-05 CN CN201910484212.4A patent/CN110081151B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040039926A (en) * | 2002-11-05 | 2004-05-12 | 주식회사 포스코 | Device of assembling for rolling equipment and metal bearing in large dynamo |
| CN101246082A (en) * | 2008-02-29 | 2008-08-20 | 西安交通大学 | Multi-fault coupling gear box simulated experiment bench |
| CN205300927U (en) * | 2016-01-06 | 2016-06-08 | 吉林大学 | Area is from unloaded running -in test bench of positioning and clamping device's that feels relieved gear box |
| CN107271180A (en) * | 2017-06-18 | 2017-10-20 | 南京理工大学 | A kind of planetary roller screw integrates load testing machine |
| CN210178877U (en) * | 2019-06-05 | 2020-03-24 | 南京高速齿轮制造有限公司 | Double-arm type wind power gear box test bed connecting base |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110081151B (en) | 2024-05-14 |
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Effective date of registration: 20190925 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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