CN202295284U - Rotor shaft - Google Patents
Rotor shaft Download PDFInfo
- Publication number
- CN202295284U CN202295284U CN 201120314856 CN201120314856U CN202295284U CN 202295284 U CN202295284 U CN 202295284U CN 201120314856 CN201120314856 CN 201120314856 CN 201120314856 U CN201120314856 U CN 201120314856U CN 202295284 U CN202295284 U CN 202295284U
- Authority
- CN
- China
- Prior art keywords
- rotor shaft
- planetary wheel
- axis body
- utility
- model
- 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.)
- Expired - Lifetime
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Abstract
The utility model provides a rotor shaft, which comprises a shaft body, wherein the shaft body is connected with a planet gear through a planet gear mounting plate, and the planet gear mounting plate and the shaft body are integrally formed. By adopting the shaft, a few auxiliary parts are required, and a transmission system consisting of the shaft is light in integral weight and high in stability.
Description
Technical field
The utility model relates to the technical field of Helicopter Transmission System main reduction gear, in particular to a kind of rotor shaft.
Background technology
In the main reduction gear of Helicopter Transmission System, the rotor shaft in the main reduction gear passes to rotor with engine power.Rotor shaft one end needs to join with planetary wheel, and rotating speed and power to accept to transmit also have coro bearng inner track and ball-bearing casing axle journal on the rotor shaft simultaneously, are used to install coro bearng and ball-bearing casing, to play the effect of supporting rotor shaft.Conventional helicopters main reduction gear rotor shaft does not have planetary wheel subpanel and coro bearng inner track; Rotor shaft connects the planetary wheel subpanel through bolt or spline mode; Coro bearng has independent interior ring, and planetary transmission constructional delails number and transmission link are more.These parts had not only increased the weight of main reduction gear but also had reduced the reliability of main reduction gear.And overweight driving system can weaken the load-carrying capacity of aircraft.Thereby planetary wheel commonly used and the coro bearng needs that are inappropriate for helicopter.
The utility model content
The utility model aims to provide a kind of rotor shaft, and it is more to solve main reduction gear epicyclic transmission mechanism part count, baroque problem, and the reliability of raising main reduction gear alleviates main reduction gear weight.
To achieve these goals, according to the utility model a kind of rotor shaft is provided, has comprised axis body, axis body links to each other with planetary wheel through the planetary wheel subpanel, and planetary wheel subpanel and axis body are one-body molded.
Further, said axis body surface is provided with the wear-resisting hard formation that adds, as the coro bearng inner track.
Further, the axis body surface is provided with spline, and spline is arranged at the relative other end with the planetary wheel subpanel.
Further, said axis body surface is provided with axle journal, is used to install ball-bearing casing.
The technique effect of the utility model is:
The rotor shaft that the utility model provides, required auxiliary component is few, thus feasible this driving system overall weight of using is light, and stability is high.
Description of drawings
The Figure of description that constitutes the application's a part is used to provide the further understanding to the utility model, and illustrative examples of the utility model and explanation thereof are used to explain the utility model, do not constitute the improper qualification to the utility model.In the accompanying drawings:
Fig. 1 shows according to rotor shaft section master among a kind of embodiment of the utility model and looks scheme drawing.
The specific embodiment
Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.Below with reference to accompanying drawing and combine embodiment to specify the utility model.
Be provided with planetary wheel subpanel 5 on the rotor shaft that the utility model provides, the wear-resisting hard formation that adds be set, on the rotor shaft as the coro bearng inner track.
The wear-resisting layer with wear resisting property of hard formation that add among this paper for adopting conventional chemical or material means to obtain.This layer can obtain through process meanses such as application abrasion resistant paint, dead-soft steel carburizings.The wear-resisting mechanical property that adds hard formation can reach the correlated performance of roller bearing inner ring, thereby can replace bearing inner ring and play a role.Thereby when making this axle mounting in Helicopter Transmission System, required auxiliary component reduces, and overall weight alleviates, and system stability is high.
Please refer to Fig. 1, the end that the axis body 1 and the planetary wheel of the rotor shaft of the utility model join is provided with outward extending planetary wheel subpanel 5.The job operation of planetary wheel subpanel 5: when processing axis body 1 forging blank, reserve the flange of corresponding size in planetary wheel subpanel 5 positions.Through follow-up machine up, flange is processed into planetary wheel subpanel 5, enhance productivity, reduce the use that is used for fixing planetary auxiliary component.
Axis body 1 surface is provided with axle journal 4 with planetary wheel subpanel 5 joints, and ball-bearing casing is sheathed on here.
Axis body 1 surface is provided with the wear-resisting hard formation that adds, and coro bearng is sheathed on coro bearng installing zone 3.Coro bearng installing zone 3 surfaces are provided with the wear-resisting hard formation that adds, and wear-resistingly add the hard formation wear resisting property and hardness reaches the required performance that reaches of roller bearing inner ring, thereby save the inner ring of coro bearng when mounted.Surface treatment means used herein include but not limited to when the employing carburizing during for dead-soft steel of used axle the surface handled.
During assembling, an end of axis body 1 relative planetary wheel subpanel 5 links to each other with rotor hub,, rotates thereby drive rotor to rotor through setting spline 2 torsion passes on it.
Rotor shaft running condition in the present embodiment: planetary wheel is installed on planetary wheel subpanel 5 places on the rotor shaft, and ball-bearing casing is installed on axle journal 4 places of axis body 1, and coro bearng is installed on coro bearng installing zone 3 places.Ball-bearing casing and coro bearng are used to bear axially and radial weight.In the use, the axle surface of the end that rotor shaft and planetary wheel subpanel 5 are relative is provided with spline 2, and this end links to each other with rotor hub, through spline 2 torsion passes with the driving rotor.
The preferred embodiment that the above is merely the utility model is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (4)
1. a rotor shaft comprises axis body, and said axis body links to each other with planetary wheel through the planetary wheel subpanel, and it is characterized in that: said planetary wheel subpanel and axis body are one-body molded.
2. rotor shaft according to claim 2 is characterized in that: said axis body surface is provided with the wear-resisting hard formation that adds, as the coro bearng inner track.
3. according to claim 1 or 2 arbitrary described rotor shaft, it is characterized in that: said axis body surface is provided with spline, and said spline is arranged at the relative other end with said planetary wheel subpanel.
4. rotor shaft according to claim 3 is characterized in that: said axis body surface is provided with axle journal, is used to install ball-bearing casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120314856 CN202295284U (en) | 2011-08-24 | 2011-08-24 | Rotor shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120314856 CN202295284U (en) | 2011-08-24 | 2011-08-24 | Rotor shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202295284U true CN202295284U (en) | 2012-07-04 |
Family
ID=46364233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120314856 Expired - Lifetime CN202295284U (en) | 2011-08-24 | 2011-08-24 | Rotor shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202295284U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104085531A (en) * | 2014-06-23 | 2014-10-08 | 中国航空动力机械研究所 | Power transmission structure for main reducer of helicopter, and helicopter |
-
2011
- 2011-08-24 CN CN 201120314856 patent/CN202295284U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104085531A (en) * | 2014-06-23 | 2014-10-08 | 中国航空动力机械研究所 | Power transmission structure for main reducer of helicopter, and helicopter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120704 |