CN113357343A - Structure of generator shafting integrated in gear box - Google Patents

Structure of generator shafting integrated in gear box Download PDF

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Publication number
CN113357343A
CN113357343A CN202110653970.1A CN202110653970A CN113357343A CN 113357343 A CN113357343 A CN 113357343A CN 202110653970 A CN202110653970 A CN 202110653970A CN 113357343 A CN113357343 A CN 113357343A
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CN
China
Prior art keywords
bearing
generator
gear box
integrated
oil
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110653970.1A
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Chinese (zh)
Inventor
刘建国
王朝阳
王天赢
李立志
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Delijia Transmission Technology Jiangsu Co ltd
Original Assignee
Delijia Transmission Technology Jiangsu Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Delijia Transmission Technology Jiangsu Co ltd filed Critical Delijia Transmission Technology Jiangsu Co ltd
Priority to CN202110653970.1A priority Critical patent/CN113357343A/en
Publication of CN113357343A publication Critical patent/CN113357343A/en
Pending legal-status Critical Current

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    • 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
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/029—Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
    • 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
    • F16H57/038—Gearboxes for accommodating bevel gears
    • 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
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/042—Guidance of lubricant
    • F16H57/0421—Guidance of lubricant on or within the casing, e.g. shields or baffles for collecting lubricant, tubes, pipes, grooves, channels or the like
    • F16H57/0424—Lubricant guiding means in the wall of or integrated with the casing, e.g. grooves, channels, holes
    • 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
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control
    • F16H57/0435—Pressure control for supplying lubricant; Circuits or valves therefor
    • 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
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0467—Elements of gearings to be lubricated, cooled or heated
    • F16H57/0469—Bearings or seals
    • F16H57/0471—Bearing
    • 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
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/048—Type of gearings to be lubricated, cooled or heated
    • F16H57/0493—Gearings with spur or bevel gears
    • 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
    • F16H57/08—General details of gearing of gearings with members having orbital motion

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Details Of Gearings (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

The invention discloses a structure of integrating a generator shafting in a gear box, which comprises the gear box, a secondary sun gear, an output shaft and a generator, wherein the secondary sun gear in the gear box is connected with the output shaft through a spline; a first bearing and a second bearing used for supporting a generator are arranged in a rear box cover of the gear box, an inner ring and an outer ring between the first bearing and the second bearing are respectively positioned by a large spacer ring and a small spacer ring, and a throttling hole used for lubricating the first bearing and the second bearing is arranged on the large spacer ring; the shaft system of the generator is integrated in the gear box on the basis of solving the problems of bearing lubrication of the generator and output end sealing of the gear box, so that the integration of the gear box and the generator is improved.

Description

Structure of generator shafting integrated in gear box
Technical Field
The invention relates to the field of wind power gear box structures, in particular to a structure of a generator shafting integrated in a gear box.
Background
In recent years, the wind power industry develops rapidly, the design of a wind power gear box gradually develops to a large megawatt level, a half direct drive has the advantage of being unique in economy and integration, the existing design that a generator shaft system is integrated on the gear box has less in the industry, meanwhile, the sealing form integrated on the gear box is a difficult point of the industry, but the generator shaft system is integrated on the gear box and can have higher integration, and the application provides a solution for the problems.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide a structure of integrating a generator shaft system in a gear box, which can integrate the shaft system of a generator in the gear box on the basis of solving the problems of generator bearing lubrication and gear box output end sealing, improve the integration of the gear box and the generator as a whole and increase the bearing capacity.
The technical scheme is as follows: the invention relates to a structure of a generator shafting integrated in a gear box, which comprises the gear box, a secondary sun gear, an output shaft and a generator, and is characterized in that: a second-stage sun gear in the gear box is connected with an output shaft through a spline, and the output shaft penetrates through a rear box cover flange and is connected with a rotor of a generator through a connecting flange; a first bearing and a second bearing used for supporting a generator are arranged in a rear box cover of the gear box, an inner ring and an outer ring between the first bearing and the second bearing are respectively propped against by a large spacer ring and a small spacer ring, and a throttling hole used for lubricating the first bearing and the second bearing is arranged on the large spacer ring; and an oil seal device is arranged between the second bearing and the connecting flange.
Preferably, the output shaft and the connecting flange are rigidly connected by bolts.
Preferably, the rear case cover flange is rigidly connected with a stator of the generator through bolts.
Preferably, the first bearing and the second bearing are tapered bearings.
Preferably, the secondary sun gear adopts helical teeth which can increase the bearing capacity and the transmission smoothness.
Preferably, the throttle hole communicates with an annular oil passage, and the annular oil passage communicates with a lubrication system inside the gear box.
Preferably, the oil sealing device comprises at least three labyrinth seals, a framework oil seal and an oil baffle disc, the labyrinth seals, the framework oil seal and the oil baffle disc are sequentially arranged between the second bearing and the connecting flange, and an oil return cavity of the labyrinth seals is communicated with a lubricating system in the gear box.
Has the advantages that: the bearing of the generator is arranged in the rear box cover of the gear box, so that the structure that the generator shaft system is integrated in the gear box is realized, and meanwhile, the generator bearing adopts a cone bearing and is matched with the helical tooth structure of the secondary sun gear, so that the axial size of the generator shaft system can be further reduced, and the integral integration and bearing capacity are improved; the throttling hole arranged on the large spacer ring between the bearings of the generator solves the problem of lubrication of the bearings of the generator, and the oil sealing device arranged between the second bearing and the connecting flange solves the sealing problem of the output end of the gear box.
Drawings
FIG. 1 is a side view of the present invention;
fig. 2 is an enlarged sectional view of the position of the circle in the side view of the present invention.
Detailed Description
As shown in fig. 1-2, which is a schematic structural diagram of the present invention, the present invention includes a gear box 1, a secondary sun gear 2, an output shaft 3 and a generator 4, the secondary sun gear 2 in the gear box 1 transmits the rotation speed and the torque of the gear box 1 to the output shaft 3 through spline connection, the output shaft 3 penetrates through a rear box cover flange 5 and is connected with a rotor of the generator 4 through a connecting flange 6 to realize torque transmission, wherein the output shaft 3 is rigidly connected with the connecting flange 6 through bolts, and the rear box cover flange 5 is rigidly connected with a stator 12 of the generator 1 through bolts.
Be provided with first bearing 7 and second bearing 8 that are used for supporting generator 4 in the back case lid, first bearing 7 and second bearing 8 adopt the taper bearing, consequently second grade sun gear 2 adopts the skewed tooth structure, can increase bearing capacity, makes the axial dimension of generator shafting reduce simultaneously, and the operation is more steady.
Meanwhile, the inner ring and the outer ring between the first bearing 7 and the second bearing 8 are respectively abutted and positioned by a large spacer ring 9 and a small spacer ring 10, a throttling hole 11 for injecting oil to the first bearing 7 and the second bearing 8 is arranged on the large spacer ring 9 and used for lubricating the first bearing 7 and the second bearing 8, the throttling hole 11 is communicated with an annular oil path 13, and the annular oil path 13 is communicated with an oil inlet pipe 17 of a rear box cover oil path.
An oil seal device is further arranged between the second bearing 8 and the connecting flange 6, the oil seal device comprises three labyrinth seals, a framework oil seal 14 and an oil baffle disc 15 in the embodiment, the labyrinth seals, the framework oil seal 14 and the oil baffle disc 15 are sequentially arranged between the second bearing 8 and the connecting flange 6, and an oil return cavity 16 of the labyrinth seals is communicated with a lubricating system in the gear box 1.
In operation, the lubricating oil of the lubricating system in the gearbox 1 is distributed into the rear box cover through the rear box cover oil inlet pipe 17 in one path after passing through the distributor, the lubricating oil enters the throttling hole 11 through the annular oil path 13 and is sprayed to lubricate the first bearing 7 and the second bearing 8, the lubricated lubricating oil enters the first labyrinth seal, and flows back to the lubricating system in the gear box 1 through the oil return cavity 16 on the labyrinth seal, and when the lubricating oil enters the second labyrinth seal and the third labyrinth seal, also through the return oil chamber 16 in the labyrinth seal back to the lubrication system inside the gearbox 1, if a certain amount of oil gas exists, the oil gas can be blocked by the framework oil seal 14 sealed by the third labyrinth, and finally, part of the oil gas which cannot be blocked can be condensed and attached to the oil baffle disc 15 under the action of the oil baffle disc 15 and then is discharged to the external cabin environment along with the drainage steel pipe.
According to the gearbox structure, the bearing of the generator is arranged in the rear box cover of the gearbox, so that the whole transmission chain structure is more compact, and meanwhile, the bearing of the generator adopts the conical bearing and is matched with the helical tooth structure of the secondary sun gear, so that the axial size of a generator shafting can be further reduced, and the integral integration and bearing capacity are improved; the cone bearing is lubricated by the lubricating system in the gear box, so that the utilization efficiency of the lubricating system is improved, a system which needs to be arranged in the generator and is used for lubricating the bearing is eliminated, the power density of the whole wind power gear box is further improved, and the integration is better.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

Claims (7)

1. The utility model provides a structure of generator shafting integration in gear box, including gear box (1), second grade sun gear (2), output shaft (3) and generator (4), its characterized in that: the secondary sun gear (2) in the gear box (1) is connected with the output shaft (3) through a spline, and the output shaft (3) penetrates through a rear box cover flange (5) of the gear box (1) and is connected with a rotor of the generator (4) through a connecting flange (6); a first bearing (7) and a second bearing (8) for supporting a generator (4) are arranged in a rear box cover of the gear box (1), inner and outer rings between the first bearing (7) and the second bearing (8) are respectively positioned by a large spacer ring (9) and a small spacer ring (10), and a throttling hole (11) for lubricating the first bearing (7) and the second bearing (8) is arranged on the large spacer ring (9); an oil seal device is arranged between the second bearing (8) and the connecting flange (6).
2. The structure of the generator shafting integrated in the gearbox as claimed in claim 1, wherein: the output shaft (3) is rigidly connected with the connecting flange (6) through bolts.
3. The structure of the generator shafting integrated in the gearbox as claimed in claim 1, wherein: the rear box cover flange (5) is rigidly connected with a stator (12) of the generator (4) through bolts.
4. The structure of the generator shafting integrated in the gearbox as claimed in claim 1, wherein: the first bearing (7) and the second bearing (8) adopt conical bearings.
5. The structure of the generator shafting integrated in the gearbox as claimed in claim 1, wherein: the secondary sun gear (2) adopts helical teeth which can increase the bearing capacity and the transmission stability.
6. The structure of the generator shafting integrated in the gearbox as claimed in claim 1, wherein: the throttling hole (11) is communicated with an annular oil way (13), and the annular oil way (13) is communicated with a lubricating system in the gear box (1).
7. The structure of the generator shafting integrated in the gearbox as claimed in claim 1, wherein: the oil seal device comprises at least three labyrinth seals, a framework oil seal (14) and an oil baffle disc (15), wherein the labyrinth seals, the framework oil seal (14) and the oil baffle disc (15) are sequentially arranged between a second bearing (8) and a connecting flange (6), and an oil return cavity (16) of the labyrinth seals is communicated with an internal lubricating system of the gear box (1).
CN202110653970.1A 2021-06-11 2021-06-11 Structure of generator shafting integrated in gear box Pending CN113357343A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110653970.1A CN113357343A (en) 2021-06-11 2021-06-11 Structure of generator shafting integrated in gear box

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110653970.1A CN113357343A (en) 2021-06-11 2021-06-11 Structure of generator shafting integrated in gear box

Publications (1)

Publication Number Publication Date
CN113357343A true CN113357343A (en) 2021-09-07

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CN202110653970.1A Pending CN113357343A (en) 2021-06-11 2021-06-11 Structure of generator shafting integrated in gear box

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114498993A (en) * 2021-12-30 2022-05-13 西安中车永电捷力风能有限公司 Compact semi-direct-drive permanent magnet synchronous wind driven generator

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101936265A (en) * 2009-06-30 2011-01-05 通用电气公司 The drivetrain system and the assembling method thereof that are used for wind turbine generator
DE102012212792A1 (en) * 2012-07-20 2014-01-23 Schaeffler Technologies AG & Co. KG Bearing arrangement for direct drive wind turbine, has generator with stator, rotor, and interposed roller bearing that is sealed by contactless seal e.g. labyrinth seal or multi-stage labyrinth, and sealing gap formed between seal elements
CN206439374U (en) * 2016-12-28 2017-08-25 南京高速齿轮制造有限公司 The mechanically-sealing apparatus of casing is passed through for high speed shaft
CN110173400A (en) * 2019-05-30 2019-08-27 中车永济电机有限公司 Compact half-direct-drive wind driven generator oil path sealing structure
CN110185778A (en) * 2019-06-25 2019-08-30 重庆望江工业有限公司 A kind of wind turbine gearbox output shaft oil-returning structure
CN111828483A (en) * 2020-07-27 2020-10-27 安徽新诺精工股份有限公司 Bearing lubricating structure of machine tool transmission seat
CN112145659A (en) * 2020-09-12 2020-12-29 中船重工电机科技股份有限公司 Oil-lubricated sealing structure of semi-direct-drive wind driven generator rotor supporting bearing

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101936265A (en) * 2009-06-30 2011-01-05 通用电气公司 The drivetrain system and the assembling method thereof that are used for wind turbine generator
DE102012212792A1 (en) * 2012-07-20 2014-01-23 Schaeffler Technologies AG & Co. KG Bearing arrangement for direct drive wind turbine, has generator with stator, rotor, and interposed roller bearing that is sealed by contactless seal e.g. labyrinth seal or multi-stage labyrinth, and sealing gap formed between seal elements
CN206439374U (en) * 2016-12-28 2017-08-25 南京高速齿轮制造有限公司 The mechanically-sealing apparatus of casing is passed through for high speed shaft
CN110173400A (en) * 2019-05-30 2019-08-27 中车永济电机有限公司 Compact half-direct-drive wind driven generator oil path sealing structure
CN110185778A (en) * 2019-06-25 2019-08-30 重庆望江工业有限公司 A kind of wind turbine gearbox output shaft oil-returning structure
CN111828483A (en) * 2020-07-27 2020-10-27 安徽新诺精工股份有限公司 Bearing lubricating structure of machine tool transmission seat
CN112145659A (en) * 2020-09-12 2020-12-29 中船重工电机科技股份有限公司 Oil-lubricated sealing structure of semi-direct-drive wind driven generator rotor supporting bearing

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114498993A (en) * 2021-12-30 2022-05-13 西安中车永电捷力风能有限公司 Compact semi-direct-drive permanent magnet synchronous wind driven generator
CN114498993B (en) * 2021-12-30 2024-03-26 西安中车永电捷力风能有限公司 Compact semi-direct-drive permanent magnet synchronous wind driven generator

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