CN113483083A - Sun gear floating structure for high-speed planetary transmission - Google Patents
Sun gear floating structure for high-speed planetary transmission Download PDFInfo
- Publication number
- CN113483083A CN113483083A CN202110830573.7A CN202110830573A CN113483083A CN 113483083 A CN113483083 A CN 113483083A CN 202110830573 A CN202110830573 A CN 202110830573A CN 113483083 A CN113483083 A CN 113483083A
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- China
- Prior art keywords
- input shaft
- angular contact
- contact bearing
- sun
- bearing
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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
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
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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
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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
- F16H57/029—Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
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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
- F16H57/04—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
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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
- F16H57/08—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)
Abstract
The invention aims to provide a sun gear floating structure for high-speed planetary transmission, which comprises an input shaft, a sun gear and a box body, wherein the sun gear is connected with the input shaft through a crowned tooth, the box body is sleeved outside the input shaft, a bearing bush is arranged between the box body and the input shaft, a first angular contact bearing and a second angular contact bearing which support the input shaft are arranged in the bearing bush, and a positioning ring and a sleeve which are used for axially positioning the first angular contact bearing and the second angular contact bearing are arranged between the first angular contact bearing and the second angular contact bearing. The input shaft adopted by the invention is supported by the bearing, and the connection structure of the sun gear and the crowned teeth of the input shaft well meets the floating requirement of the sun gear in the planetary gear transmission, greatly reduces the shaft vibration of the input shaft and improves the operation safety of high-speed planetary gear transmission equipment.
Description
Technical Field
The invention relates to a planetary transmission structure, in particular to a planetary transmission structure capable of running at a high speed.
Background
The gear transmission device mainly has two types from the structural form: parallel shaft external transmission and planetary gear transmission; compared with an external transmission device, the planetary gear transmission is characterized in that the transmitted power is distributed to three or more planetary gears and belongs to a power multi-branch structure, so that the planetary gear transmission has the greatest advantage of smaller size under the same transmitted power, and reasonable vibration and noise reduction measures are easy to adopt due to the fact that the main structure of the box body is relatively simple. Meanwhile, the planetary transmission has the coaxial input and output characteristics, can realize large-speed-ratio transmission, is widely applied in the field of industrial transmission, and can be used in various application occasions where motors, steam turbines and gas turbines are used as main machines. Because of the load-sharing characteristic of the planetary gear transmission, the sun gear or the inner gear ring is used as a floating part in the common design, the sun gear is used as the floating part more commonly, the sun gear is not supported as the floating part, the radial automatic adjustment of the sun gear is used for ensuring that each planet gear is uniformly loaded in the planetary transmission when the load is transmitted, the service life of the planet gear is prolonged, and the transmission vibration noise is reduced. However, in high-speed transmission, the sun gear is not supported, and under the high-speed rotation driving of the host, the shaft vibration of the sun gear and the input shaft is large, the axis locus is not stable enough, the operation safety of equipment is influenced, and the shaft vibration requirement of the industrial fields such as the power industry and the chemical industry on the gear transmission device cannot be met, so that the design of the sun gear floating structure for high-speed planetary transmission is developed, and the reduction of the shaft vibration displacement caused by high-speed rotation is necessary on the premise of ensuring the floating load-balancing characteristic of the planetary transmission.
Disclosure of Invention
The invention aims to provide a sun gear floating structure for high-speed planetary transmission, which can ensure that a sun gear in the planetary transmission floats under the same operating environment, thereby realizing uniform load of the planetary transmission, simultaneously ensuring that the trajectories of the sun gear and an input shaft system are stable under high-speed operation, reducing shaft vibration displacement and ensuring the safety of equipment.
The purpose of the invention is realized as follows:
the invention relates to a sun gear floating structure for high-speed planetary transmission, which is characterized in that: including input shaft, sun gear, box, the sun gear passes through the cydariform tooth with the input shaft and is connected, and the box cover sets up bearing bush in the input shaft outside between box and the input shaft, sets up first angle contact bearing and the second angular contact bearing that supports the input shaft in the bearing bush, sets up between first angle contact bearing and the second angular contact bearing and carries out axial positioning's holding ring and sleeve to it.
The present invention may further comprise:
1. the first angular contact bearing and the input shaft are installed in a pre-tightening mode through a round nut and a locking washer which are installed on the input shaft, and the second angular contact bearing, the input shaft and the box body are installed in a pre-tightening mode through a sealing cover which is installed on the input shaft.
2. A check ring is arranged between the sun wheel and the input shaft, a gland is fixed at the end parts of the sun wheel and the input shaft, and the sun wheel and the input shaft are axially positioned by the check ring and the gland.
3. A wedge-shaped seal is arranged between the seal cover and the input shaft.
4. An oil retainer ring is arranged between the second angular contact bearing and the sealing cover.
5. An oil supply pipe is installed on the box body, an annular groove is formed in the box body and is respectively communicated with the oil supply pipe and a bearing bushing, a positioning ring is arranged on the positioning ring and is communicated with the positioning ring annular groove, and the positioning ring annular groove is communicated with a first angular contact bearing and a second angular contact bearing.
6. One side of the lubricating oil of the oil supply pipe flows into the input shaft and the center of the sun wheel to lubricate the crowned teeth, and the other side of the lubricating oil flows into the box body through the oil return hole of the bearing bush to enter the lubricating oil tank.
The invention has the advantages that: the input shaft adopted by the invention is supported by the bearing, and the connection structure of the sun gear and the crowned teeth of the input shaft well meets the floating requirement of the sun gear in the planetary gear transmission, greatly reduces the shaft vibration of the input shaft and improves the operation safety of high-speed planetary gear transmission equipment.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
The invention will now be described in more detail by way of example with reference to the accompanying drawings in which:
referring to fig. 1, the sun gear floating structure for high-speed planetary transmission comprises a sun gear 1, a round nut 2, a locking washer 3, an angular contact bearing 4, a positioning ring 5, a sleeve 6, a bearing bush 7, an angular contact bearing 8, a sealing cover 9, an oil retainer ring 10, an input shaft 11, a retainer ring 12, a gland 13, a bolt 14, a wedge seal 15, a box 16, a planetary gear 17 and an oil supply pipe 18. The structure is characterized in that the sun gear 1 is connected with the input shaft 11 through a crowned tooth, and the sun gear 1 and the input shaft 11 are axially positioned with the gland 13 through the retainer ring 12. The input shaft 11 is supported by the paired use of the angular contact bearing 4 and the angular contact bearing 8, the angular contact bearing 4 and the angular contact bearing 8 are installed in the bearing bush 7, are axially positioned by the positioning ring 5 and the sleeve 6, and are pre-tightened and installed through the round nut 2, the locking washer 3 and the sealing cover 9, so that the running performance of the bearing is ensured. The oil supply pipe 18 is installed on the box body, the lubricating oil flows into the box body through an internal pipeline to lubricate the bearing, and the lubricating oil is sealed through the oil retainer 10, the wedge seal 15 and the gland 13 to prevent the lubricating oil from leaking.
The input shaft 11 is supported by the angular contact bearings 4 and 8 in a matched mode and bears the radial force and the axial force transmitted by the input end, the sun wheel 1 is connected with the input shaft 11 through the crowned teeth, radial floating is achieved through the crowned teeth, the sun wheel only transmits torque and does not bear the radial load and the axial load of the input end, the axle center track is more stable when the sun wheel runs at a high speed, shaft vibration displacement is reduced, and the safety of equipment running is guaranteed, meanwhile, the oil supply pipe 18 is installed on the box body, lubricating oil flows into the bearings through the internal pipeline to lubricate the bearings, integrated lubricating oil pipeline design is conducted, bearing lubrication is guaranteed, meanwhile, external pipeline design is reduced, and equipment operation is simpler.
The structure adopts an integrated lubricating oil circuit design in order to consider the lubricating and sealing characteristics of the high-speed transmission bearing, an oil supply pipe 18 supplies oil to enter a box body annular groove, the box body annular groove is filled with the oil and then enters a bearing bush 7 and then flows into a positioning ring annular groove through an oil hole, and the positioning ring annular groove is filled with the oil and then oil is sprayed and lubricated for the bearing through oil spray holes on two sides. Bearing lubricating oil flows into the center of the input shaft 11 and the sun wheel 1 through the left side to lubricate the drum-shaped teeth, flows into the box body 16 through the oil return hole of the bearing bush on the right side to enter the lubricating oil tank, and simultaneously, the input end is stepped on and is blocked by adopting the oil retainer 10 and the wedge-shaped seal 15, so that the lubricating oil is prevented from leaking and causing environmental pollution.
The technical problem to be solved by the invention is as follows: the floating link is required to be designed due to the structural characteristics of the planetary gear transmission, the floating of the sun gear is one of the common structures, but when the sun gear runs at a high speed, the floating sun gear which is not supported can cause the shaft vibration displacement of an input shaft system to be overlarge, so that the safety of equipment is influenced.
Claims (7)
1. A sun gear floating structure for high-speed planetary transmission is characterized in that: including input shaft, sun gear, box, the sun gear passes through the cydariform tooth with the input shaft and is connected, and the box cover sets up bearing bush in the input shaft outside between box and the input shaft, sets up first angle contact bearing and the second angular contact bearing that supports the input shaft in the bearing bush, sets up between first angle contact bearing and the second angular contact bearing and carries out axial positioning's holding ring and sleeve to it.
2. A sun floating structure for a high speed planetary transmission as claimed in claim 1, wherein: the first angular contact bearing and the input shaft are installed in a pre-tightening mode through a round nut and a locking washer which are installed on the input shaft, and the second angular contact bearing, the input shaft and the box body are installed in a pre-tightening mode through a sealing cover which is installed on the input shaft.
3. A sun floating structure for a high speed planetary transmission as claimed in claim 1, wherein: a check ring is arranged between the sun wheel and the input shaft, a gland is fixed at the end parts of the sun wheel and the input shaft, and the sun wheel and the input shaft are axially positioned by the check ring and the gland.
4. A sun floating structure for a high speed planetary transmission as claimed in claim 1, wherein: a wedge-shaped seal is arranged between the seal cover and the input shaft.
5. A sun floating structure for a high speed planetary transmission as claimed in claim 1, wherein: an oil retainer ring is arranged between the second angular contact bearing and the sealing cover.
6. A sun floating structure for a high speed planetary transmission as claimed in claim 1, wherein: an oil supply pipe is installed on the box body, an annular groove is formed in the box body and is respectively communicated with the oil supply pipe and a bearing bushing, a positioning ring is arranged on the positioning ring and is communicated with the positioning ring annular groove, and the positioning ring annular groove is communicated with a first angular contact bearing and a second angular contact bearing.
7. A sun floating structure for a high speed planetary transmission as claimed in claim 1, wherein: one side of the lubricating oil of the oil supply pipe flows into the input shaft and the center of the sun wheel to lubricate the crowned teeth, and the other side of the lubricating oil flows into the box body through the oil return hole of the bearing bush to enter the lubricating oil tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110830573.7A CN113483083A (en) | 2021-07-22 | 2021-07-22 | Sun gear floating structure for high-speed planetary transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110830573.7A CN113483083A (en) | 2021-07-22 | 2021-07-22 | Sun gear floating structure for high-speed planetary transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113483083A true CN113483083A (en) | 2021-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110830573.7A Pending CN113483083A (en) | 2021-07-22 | 2021-07-22 | Sun gear floating structure for high-speed planetary transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113483083A (en) |
Citations (10)
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|---|---|---|---|---|
| CN102278424A (en) * | 2011-08-01 | 2011-12-14 | 大连华锐股份有限公司 | Cutting speed reducer of tunnel boring machine |
| CN202181148U (en) * | 2011-07-18 | 2012-04-04 | 天津三英焊业股份有限公司 | Single-head initiative rolling-unrolling machine |
| CN102537219A (en) * | 2011-12-14 | 2012-07-04 | 中航黎明锦西化工机械(集团)有限责任公司 | Center gear floating planetary gear reducer |
| CN202468943U (en) * | 2012-01-18 | 2012-10-03 | 杭州前进齿轮箱集团股份有限公司 | Sun wheel support device in planet wheel transmission |
| CN202545696U (en) * | 2012-03-30 | 2012-11-21 | 杭州前进齿轮箱集团股份有限公司 | High-power two-stage speed-increasing planet gearbox |
| CN104963942A (en) * | 2015-06-11 | 2015-10-07 | 中国航空动力机械研究所 | Novel bearing lubricating structure |
| CN205026080U (en) * | 2015-09-18 | 2016-02-10 | 杭州前进齿轮箱集团股份有限公司 | Sun gear floating gripper structure for wind -powered electricity generation acceleration rate case |
| CN212480089U (en) * | 2020-07-02 | 2021-02-05 | 南京高精齿轮集团有限公司 | Sun gear axial limiting structure and planetary gear mechanism |
| CN212868231U (en) * | 2020-08-12 | 2021-04-02 | 南京高速齿轮制造有限公司 | Sun gear transmission structure and planetary gear box |
| CN112696468A (en) * | 2020-12-25 | 2021-04-23 | 中国船舶重工集团公司第七0三研究所 | Horizontal eccentric external meshing and planetary compound transmission loading device |
-
2021
- 2021-07-22 CN CN202110830573.7A patent/CN113483083A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202181148U (en) * | 2011-07-18 | 2012-04-04 | 天津三英焊业股份有限公司 | Single-head initiative rolling-unrolling machine |
| CN102278424A (en) * | 2011-08-01 | 2011-12-14 | 大连华锐股份有限公司 | Cutting speed reducer of tunnel boring machine |
| CN102537219A (en) * | 2011-12-14 | 2012-07-04 | 中航黎明锦西化工机械(集团)有限责任公司 | Center gear floating planetary gear reducer |
| CN202468943U (en) * | 2012-01-18 | 2012-10-03 | 杭州前进齿轮箱集团股份有限公司 | Sun wheel support device in planet wheel transmission |
| CN202545696U (en) * | 2012-03-30 | 2012-11-21 | 杭州前进齿轮箱集团股份有限公司 | High-power two-stage speed-increasing planet gearbox |
| CN104963942A (en) * | 2015-06-11 | 2015-10-07 | 中国航空动力机械研究所 | Novel bearing lubricating structure |
| CN205026080U (en) * | 2015-09-18 | 2016-02-10 | 杭州前进齿轮箱集团股份有限公司 | Sun gear floating gripper structure for wind -powered electricity generation acceleration rate case |
| CN212480089U (en) * | 2020-07-02 | 2021-02-05 | 南京高精齿轮集团有限公司 | Sun gear axial limiting structure and planetary gear mechanism |
| CN212868231U (en) * | 2020-08-12 | 2021-04-02 | 南京高速齿轮制造有限公司 | Sun gear transmission structure and planetary gear box |
| CN112696468A (en) * | 2020-12-25 | 2021-04-23 | 中国船舶重工集团公司第七0三研究所 | Horizontal eccentric external meshing and planetary compound transmission loading device |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211008 |