CN108105041B - Device for maintaining gearbox on tower and application thereof - Google Patents
Device for maintaining gearbox on tower and application thereof Download PDFInfo
- Publication number
- CN108105041B CN108105041B CN201711462817.0A CN201711462817A CN108105041B CN 108105041 B CN108105041 B CN 108105041B CN 201711462817 A CN201711462817 A CN 201711462817A CN 108105041 B CN108105041 B CN 108105041B
- Authority
- CN
- China
- Prior art keywords
- box body
- lifting
- middle gear
- gear shaft
- pulley
- 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
- 238000000034 method Methods 0.000 claims description 4
- 239000010687 lubricating oil Substances 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 1
- 239000000314 lubricant Substances 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
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
- F03D80/50—Maintenance or repair
-
- 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
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
-
- 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)
- Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)
- Forklifts And Lifting Vehicles (AREA)
Abstract
The invention discloses a device for maintaining a gear box on a tower and application thereof, wherein the device comprises a box opening hinge, a box body supporting frame and a middle gear shaft lifting device; the middle gear shaft lifting device comprises a lifting frame, a lifting frame positioning rod, a pulley sliding rail, a chain block, an upper movable mounting seat and a lower movable mounting seat of the lifting frame, wherein the lifting frame is fixed in a mounting screw hole of a lower box body through a lower movable mounting seat by a bolt; the device for maintaining the gear box on the tower does not need to rent a crane, does not need to set up a complex tool frame, unpacks the gear box through a hinge, does not need to remove an upper box body, saves space and simplifies tools.
Description
Technical Field
The invention relates to a maintenance tool for a wind power gear box, in particular to a special tool for replacing a gear shaft in the wind power gear box on an upper and lower type box body tower and application thereof.
Background
The wind power gear box of the upper and lower type box body at present is installed in the upper cabin of the high-altitude fan, the middle gear shaft is installed between the upper and lower box bodies of the parallel stage through bearings at two ends of the middle gear shaft, the middle gear shaft gear is meshed with the high-speed gear shaft, the middle gear shaft gear is meshed with the low-speed gear shaft, the wind power gear box is used for hanging the upper box body to the ground by using a hanging machine after the damage of the middle gear shaft gear, the middle gear shaft is damaged or the bearing is damaged, or the middle gear shaft is replaced after the upper box body is hung in the upper cabin of the fan for a distance by using a complicated tool frame, the phenomenon is caused because the middle gear shaft cannot be directly taken out due to the gear box structure, and the space in the cabin is limited to be used for hanging the upper box body to the ground or construction after the upper box body is hung by a tool frame. Renting cranes or setting up tooling rack changes have the following disadvantages: 1. the maintenance cost is high by 2, the rented crane is greatly influenced by weather conditions (the wind speed exceeds 10m/s and can not be hoisted, and the rain can not be hoisted) 3, the tooling frame is complex to erect, and the construction time is long. In the face of this technical bottleneck, there is an urgent need in the art for an optimal solution.
Disclosure of Invention
The invention aims to provide a device for maintaining a gear box on a tower, aiming at the problems existing in the maintenance of the wind power gear box at present.
The purpose of the invention is realized in the following way: the device for maintaining the gear box on the tower is characterized by comprising a pair of box opening hinges, a box body supporting frame and a middle gear shaft lifting device;
the middle gear shaft lifting device comprises a pair of lifting frames, a lifting frame positioning rod, a group of pulley sliding rails, a chain block, an upper movable mounting seat and a lower movable mounting seat, wherein the pair of lifting frames are fixed in a mounting screw hole of a lower box body through bolts by the lower movable mounting seat, the upper parts of the lifting frames are positioned by the lifting frame positioning rod, the upper movable mounting seat is fixed in the mounting screw hole of the upper box body through bolts, the upper movable mounting seat is connected with the lifting frame positioning rod through a basket bolt, two ends of the pulley sliding rails are hung at two ends of the lifting frame positioning rod, and the chain block is hung below a pulley in the pulley sliding rails.
In the invention, the mounting holes of the box opening hinge, the box body support frame, the upper movable mounting seat and the lower movable mounting seat of the lifting frame correspond to the mounting holes of the upper box body and the lower box body of the gear box.
In the invention, the suspended pulley slide rail inclines to the lifting and moving-out side of the middle gear shaft, the high end of the pulley slide rail is a hand-operated ratchet wheel, and the hand-operated ratchet wheel pulls the pulley in the pulley slide rail through a rope.
In the invention, the chain block is provided with a middle-tooth shaft lifting head, the middle-tooth shaft lifting head is of a pi-shaped structure, the center of the top of the middle-tooth shaft lifting head is provided with a lifting ring, the lower part of the middle-tooth shaft lifting head is provided with a corresponding pin hole, and a pin shaft penetrates through a weight-reducing hole of the middle-tooth shaft gear and then is connected with the pin hole corresponding to the lower part of the pi-shaped structure.
Use of a device for repairing a gearbox on a tower, characterized in that: the method comprises the steps that lubricating oil is discharged, connecting bolts of an upper box body and a lower box body are discharged, the upper box body is jacked up through jacking bolts between the upper box body and the lower box body, and a pair of box opening hinges are arranged between the upper box body and the lower box body which are far away from a middle gear shaft by using mounting holes of the original box bodies;
slowly jacking the other side of the box body by using a hydraulic jacking device, fixing the box body by using a box body supporting frame, and tightly tightening the box body supporting frame by using a bolt;
the lower movable mounting seats of a pair of hoisting frames are mounted on the lower box body by using mounting holes of the original box body, the upper parts of the lower movable mounting seats are fixed by using positioning rods of the hoisting frames, and meanwhile, the upper movable mounting seats are mounted on the upper box body by using mounting holes of the original box body and are connected with the positioning rods of the hoisting frames by using basket bolts;
two ends of a pulley sliding rail are suspended on a positioning rod of a hoisting frame, and a chain block is suspended below a pulley;
after passing through the weight reducing hole of the middle gear, a pin shaft is connected with a pin hole corresponding to the lower part of the n-shaped structure, and then the middle gear is lifted by a chain block;
the hand ratchet wheel is loosened, the pulley in the pulley slide rail is controlled to move from the high end to the low end through the rope, when the pulley moves to the end part of the pulley slide rail, the pair of hoisting frames are synchronously outwards inclined through rotating the basket bolts, the middle gear shaft is displaced to the outer side of the lower box body along with the rotation of the basket bolts, and the middle gear shaft is put down through the chain block.
The invention has the advantages that:
first: the invention has the advantages that the crane is not required to be rented, the complex tool frame is not required to be erected, the box is opened through the hinge, the upper box body is not required to be removed, the space is saved, and the tool is simplified.
Second,: the invention has the advantage that the movement of the middle gear shaft in six directions of up, down, left, right, front and back can be realized. The tool has strong functionality.
Third,: effectively shortens downtime, shortens maintenance time and reduces maintenance cost, and has high structural strength and convenient disassembly, assembly and maintenance.
Fourth,: the tool is assembled, the weight of the parts is reduced, and the risk of personnel operation is reduced.
Drawings
FIG. 1 is a schematic view of the basic structure of an embodiment of the present invention;
fig. 2 is a schematic view of the invention in actual use.
In the figure: 1. the box opening hinge 2, a box body supporting frame, 3, an upper movable mounting seat, 4, a flower basket bolt, 5, a lower movable mounting seat, 6, a lifting frame, 7, a lifting frame positioning rod, 8, a pulley sliding rail, 9, a pulley, 10, a chain block, 11, a middle gear shaft lifting head, 12, a hand ratchet wheel, 13, a middle gear shaft, 14, a lightening hole, 15 and a middle gear shaft gear.
Detailed Description
The drawings disclose, without limitation, the basic structure of an embodiment of the invention, and the invention is further described below in conjunction with the drawings.
As can be seen from fig. 1: the invention comprises a pair of box opening hinges 1, a box body supporting frame 2 and a middle gear shaft lifting device; the middle gear shaft lifting device comprises a pair of lifting frames 6, a lifting frame positioning rod 7, a group of pulley sliding rails 8, a chain block 10, an upper movable mounting seat 3 and a lower movable mounting seat 5, wherein the lifting frames 6 are fixed in a mounting screw hole of a lower box body through bolts by the lower movable mounting seat 5, the upper parts of the lifting frames 6 are positioned by the lifting frame positioning rod 7, the upper movable mounting seat 3 is fixed in the mounting screw hole of the upper box body through bolts, the upper movable mounting seat 3 is connected with the lifting frame positioning rod 7 through a basket bolt 4, two ends of the pulley sliding rails 8 are suspended at two ends of the lifting frame positioning rod 7, and the chain block 10 is suspended below a pulley 9 in the pulley sliding rails 8. The suspended pulley slide rail 8 inclines to the lifting and moving-out side of the middle gear shaft, the high end of the suspended pulley slide rail is a hand-operated ratchet wheel 12, and the hand-operated ratchet wheel 12 pulls the pulley 9 in the pulley slide rail 8 through a rope.
In this embodiment, the chain block 10 is provided with a middle-toothed shaft lifting head 11, the middle-toothed shaft lifting head 11 is of a "n" structure, a lifting ring is arranged in the center of the top of the middle-toothed shaft lifting head, a corresponding pin hole is arranged at the lower part of the middle-toothed shaft lifting head, and a pin shaft penetrates through a weight-reducing hole 14 of a middle-toothed shaft gear 15 on the middle-toothed shaft 13 and then is connected with the pin hole corresponding to the lower part of the "n" structure.
In the concrete implementation, the mounting holes of the box opening hinge 1, the box body supporting frame 2, the upper movable mounting seat 3 and the lower movable mounting seat 5 of the hoisting frame correspond to the mounting holes of the upper box body and the lower box body of the gear box.
As can be seen from fig. 2, in the application of the present invention, firstly, the lubricant is discharged, the connecting bolts of the upper and lower cases are removed, the upper case is jacked up by the jack-up bolts between the upper and lower cases, and a pair of split hinges 1 are installed between the upper and lower cases at the side far from the middle gear shaft by using the mounting holes of the original case.
The other side of the box body is slowly jacked by a hydraulic jacking device, then is fixed by a box body supporting frame 2, and is tightly fastened by bolts.
The lower movable mounting seats 5 of the pair of hoisting frames 6 are mounted on the lower box body, the upper parts of the lower movable mounting seats are fixed through the hoisting frame positioning rods 7, meanwhile, the upper movable mounting seats 3 are mounted on the upper box body, and the upper movable mounting seats 3 are connected with the hoisting frame positioning rods 7 through the flower basket bolts 4.
Two ends of a pulley sliding rail 8 are hung on a hanging frame positioning rod 7, and a hand hoist 10 is hung below a pulley 9.
One pin shaft passes through the weight reducing hole 14 of the middle gear 15, is connected with a pin hole corresponding to the lower part of the n-shaped structure, and then lifts the middle gear through the chain block 10.
Loosening the hand-operated ratchet wheel 12, controlling the pulley 9 in the pulley slide rail 8 to move from the high end to the low end through a rope, and when the pulley 9 moves to the end part of the pulley slide rail 8, enabling the pair of hoisting frames 6 to incline outwards through the basket bolts 4, enabling the middle gear shaft to move to the outer side of the lower box body along with the outer side, and finally putting down the middle gear shaft through the chain block 10.
The assembly process of the box opening hinge 1 and the lifting frame 6 in the middle gear shaft installation process is the same, and the difference is that the middle gear shaft 13 is positioned at the outer side of the lower box body, so that the middle gear shaft 13 is lifted through the chain block 10, after a certain height is reached, the basket bolts 4 are adjusted, the lifting frame 6 is inclined inwards, the hand ratchet 12 is basically shaken after the lifting frame is in place, the middle gear shaft 13 basically reaches the upper part of the installation part under the traction of a rope, the chain block is slowly loosened, the middle gear shaft 13 is accurately positioned, finally the lifting frame 6, the box body support frame 2 and the box opening hinge 1 are sequentially removed, and the specific removal process is opposite to the installation process of the lifting frame, the box body support frame 2 and the box opening hinge 1.
Claims (2)
1. Use of a device for repairing a gearbox on a tower, characterized in that: the method comprises the steps that lubricating oil is discharged, connecting bolts of an upper box body and a lower box body are discharged, the upper box body is jacked up through jacking bolts between the upper box body and the lower box body, and a pair of box opening hinges are arranged between the upper box body and the lower box body which are far away from a middle gear shaft by using mounting holes of the original box bodies;
slowly jacking the other side of the box body by using a hydraulic jacking device, fixing the box body by using a box body supporting frame, and tightly tightening the box body supporting frame by using a bolt;
the lower movable mounting seats of a pair of hoisting frames are mounted on the lower box body by using mounting holes of the original box body, the upper parts of the lower movable mounting seats are fixed by using positioning rods of the hoisting frames, and meanwhile, the upper movable mounting seats are mounted on the upper box body by using mounting holes of the original box body and are connected with the positioning rods of the hoisting frames by using basket bolts;
two ends of a pulley sliding rail are suspended on a positioning rod of a hoisting frame, and a chain block is suspended below a pulley;
after passing through the weight reducing hole of the middle gear, a pin shaft is connected with a pin hole corresponding to the lower part of the n-shaped structure, and then the middle gear is lifted by a chain block;
loosening a hand-operated ratchet wheel, controlling a pulley in a pulley sliding rail to move from a high end to a low end through a rope, enabling a pair of hoisting frames to synchronously incline outwards through rotating a basket bolt when the pulley is moved to the end part of the pulley sliding rail, enabling a middle gear shaft to move to the outer side of a lower box body along with the rotation of the basket bolt, and putting down the middle gear shaft through a chain block;
the device for maintaining the gear box on the tower comprises a pair of box opening hinges, a box body supporting frame and a middle gear shaft lifting device;
the middle gear shaft lifting device comprises a pair of lifting frames, a lifting frame positioning rod, a group of pulley sliding rails, a chain block, an upper movable mounting seat and a lower movable mounting seat of the lifting frames, wherein the pair of lifting frames are fixed in a mounting screw hole of a lower box body of the gear box through bolts by the lower movable mounting seats, the upper part of the lifting frames is positioned by the lifting frame positioning rod, the upper movable mounting seat is fixed in the mounting screw hole of the upper box body of the gear box through bolts, the upper mounting seat is connected with the lifting frame positioning rod through a basket bolt, two ends of the pulley sliding rails are hung at two ends of the lifting frame positioning rod, and the chain block is hung below a pulley in the pulley sliding rails; the suspended pulley sliding rail inclines to the lifting and moving-out side of the middle gear shaft, a hand-operated ratchet wheel is arranged at the high end of the pulley sliding rail, and the hand-operated ratchet wheel pulls a pulley in the pulley sliding rail through a rope;
the chain block is provided with a middle gear shaft lifting head, the middle gear shaft lifting head is of a pi-shaped structure, a lifting ring is arranged in the center of the top of the middle gear shaft lifting head, a corresponding pin hole is arranged at the lower part of the middle gear shaft lifting head, and one pin shaft penetrates through a weight reducing hole of the middle gear shaft gear and then is connected with the pin hole corresponding to the lower part of the pi-shaped structure.
2. The use of claim 1, wherein the mounting holes of the box opening hinge, the box body supporting frame, the upper movable mounting seat and the lower movable mounting seat of the lifting frame correspond to the mounting holes of the upper box body and the lower box body of the gear box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711462817.0A CN108105041B (en) | 2017-12-28 | 2017-12-28 | Device for maintaining gearbox on tower and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711462817.0A CN108105041B (en) | 2017-12-28 | 2017-12-28 | Device for maintaining gearbox on tower and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108105041A CN108105041A (en) | 2018-06-01 |
| CN108105041B true CN108105041B (en) | 2023-05-30 |
Family
ID=62214164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711462817.0A Active CN108105041B (en) | 2017-12-28 | 2017-12-28 | Device for maintaining gearbox on tower and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108105041B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10982655B2 (en) * | 2019-04-26 | 2021-04-20 | General Electric Company | System and method for repairing a gearbox of a wind turbine uptower |
| CN112610430B (en) * | 2020-12-21 | 2022-05-27 | 远景能源有限公司 | Method for replacing gear shaft in wind driven generator |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102689174A (en) * | 2012-06-21 | 2012-09-26 | 济南轨道交通装备有限责任公司 | Device for replacing high-speed shaft of wind turbine gearbox |
| CN202684449U (en) * | 2012-06-21 | 2013-01-23 | 济南轨道交通装备有限责任公司 | Device for replacing high-speed shaft of wind turbine gearbox |
| CN103764541A (en) * | 2011-06-28 | 2014-04-30 | 维斯塔斯风力系统有限公司 | Lifting tool for servicing of wind turbine gearbox components and method of servicing using such a tool |
| KR20150019459A (en) * | 2013-08-14 | 2015-02-25 | 현대중공업 주식회사 | Maintenance System for Wind-Electric Power Generator |
| CN106050582A (en) * | 2016-06-03 | 2016-10-26 | 南京安维士传动技术股份有限公司 | Method for replacing planet carrier motor side bearing of wind power gear box in air |
| CN107140536A (en) * | 2017-07-12 | 2017-09-08 | 国电联合动力技术有限公司 | A kind of wind wheel of not tearing open can change the assembly tooling of gear-box in the air |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2246163B1 (en) * | 2004-07-23 | 2007-03-16 | Gamesa Eolica, S.A. Sociedad Unipersonal | AN INDEPENDENT MOBILE CRANE SYSTEM FOR TEMPORARY USE TO MOVE OR REPLACE COMPONENTS AND FOR THE ASSEMBLY OF AEROGENERATORS. |
| US7721434B2 (en) * | 2005-07-27 | 2010-05-25 | General Electric Company | Methods and apparatus for replacing objects on horizontal shafts in elevated locations |
| US9404559B2 (en) * | 2012-09-10 | 2016-08-02 | General Electric Company | Fixture, maintenance assembly, and method for maintaining wind turbine gearbox |
-
2017
- 2017-12-28 CN CN201711462817.0A patent/CN108105041B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103764541A (en) * | 2011-06-28 | 2014-04-30 | 维斯塔斯风力系统有限公司 | Lifting tool for servicing of wind turbine gearbox components and method of servicing using such a tool |
| CN102689174A (en) * | 2012-06-21 | 2012-09-26 | 济南轨道交通装备有限责任公司 | Device for replacing high-speed shaft of wind turbine gearbox |
| CN202684449U (en) * | 2012-06-21 | 2013-01-23 | 济南轨道交通装备有限责任公司 | Device for replacing high-speed shaft of wind turbine gearbox |
| KR20150019459A (en) * | 2013-08-14 | 2015-02-25 | 현대중공업 주식회사 | Maintenance System for Wind-Electric Power Generator |
| CN106050582A (en) * | 2016-06-03 | 2016-10-26 | 南京安维士传动技术股份有限公司 | Method for replacing planet carrier motor side bearing of wind power gear box in air |
| CN107140536A (en) * | 2017-07-12 | 2017-09-08 | 国电联合动力技术有限公司 | A kind of wind wheel of not tearing open can change the assembly tooling of gear-box in the air |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108105041A (en) | 2018-06-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102198914B (en) | Working platform for installing wind generating set | |
| CN110925149B (en) | Maintenance method for gearbox tower of wind driven generator | |
| CN101589226A (en) | A method for fitting the rotor of a wind generator | |
| CN206068837U (en) | A kind of lowering or hoisting gear | |
| WO2011095167A2 (en) | A method for lifting and lowering of a wind turbine blade | |
| CN112723196B (en) | Method for replacing large pull rod lower hinge point bearing of gantry crane | |
| CN108105041B (en) | Device for maintaining gearbox on tower and application thereof | |
| CN105905813A (en) | Blade hoisting tool for wind-driven generator | |
| CN211343235U (en) | Maintenance tool on gearbox tower of wind driven generator | |
| CN112045626B (en) | Efficient maintenance device and method for large horizontal plane gate hinge bearing of vertical ship lift | |
| CN216105697U (en) | Large part hoisting device in wind power hub | |
| CN112030741A (en) | Mobile device for bridge detection and reinforcement | |
| CN109850028B (en) | Wind power tower maintenance robot | |
| CN206288191U (en) | A kind of rudder oar fixture vehicle | |
| CN104192681B (en) | A kind of building hoist integration actuating device | |
| CN114104999A (en) | Externally hung climbing frame type self-climbing crane attached to cylinder wall and climbing method thereof | |
| CN114212702A (en) | Attached-cylinder self-climbing crane | |
| CN212356315U (en) | Hoisting equipment for operation and maintenance of wind turbine generator | |
| CN214611225U (en) | Bridge type cantilever crane with safety hook | |
| CN215592478U (en) | Large-scale hydroelectric generating set stopper dismouting mechanism | |
| DE102016004348A1 (en) | Mobile crane device and method for temporarily mounting such a crane device | |
| CN114457774B (en) | Tool and method for disassembling and assembling hydraulic cylinder of lock head working gate of ship lift | |
| CN212613839U (en) | Sideslip device | |
| CN101776033B (en) | Hydraulic dismounting device for vertical-shaft pelton turbine rotating wheel | |
| CN205346645U (en) | A device that is used for changing fan gear box fast axis in air |
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 | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20190930 Address after: 211100, No. 1 East Tianyuan Road, Jiangning District, Jiangsu, Nanjing Applicant after: NANJING HIGH SPEED GEAR MANUFACTURING Co.,Ltd. Applicant after: Nanjing High Precision Transmission Equipment Manufacturing Group Co.,Ltd. Address before: 211100, No. 1 East Tianyuan Road, Jiangning District, Jiangsu, Nanjing Applicant before: NANJING HIGH SPEED GEAR MANUFACTURING Co.,Ltd. |
|
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20200515 Address after: 211100, No. 1 East Tianyuan Road, Jiangning District, Jiangsu, Nanjing Applicant after: NANJING HIGH SPEED GEAR MANUFACTURING Co.,Ltd. Address before: 211100, No. 1 East Tianyuan Road, Jiangning District, Jiangsu, Nanjing Applicant before: NANJING HIGH SPEED GEAR MANUFACTURING Co.,Ltd. Applicant before: Nanjing High Precision Transmission Equipment Manufacturing Group Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |