CN105620738A - Reducer connecting structure for helicopter and helicopter with same - Google Patents
Reducer connecting structure for helicopter and helicopter with same Download PDFInfo
- Publication number
- CN105620738A CN105620738A CN201610003815.4A CN201610003815A CN105620738A CN 105620738 A CN105620738 A CN 105620738A CN 201610003815 A CN201610003815 A CN 201610003815A CN 105620738 A CN105620738 A CN 105620738A
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- CN
- China
- Prior art keywords
- helicopter
- decelerator
- attachment structure
- ring flange
- oil sealing
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C27/00—Rotorcraft; Rotors peculiar thereto
- B64C27/04—Helicopters
- B64C27/12—Rotor drives
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- General Details Of Gearings (AREA)
Abstract
The invention discloses a reducer connecting structure for a helicopter and the helicopter with the same. The reducer connecting structure for the helicopter comprises a flange plate used for connecting gear shafts of a reducer with tail transmission shafts of the helicopter, and the tail transmission shafts are fixedly connected with the flange plate through fasteners; the gear shafts are movably connected with the flange plate through floating spline structures in the axial direction; and according to the reducer connecting structure, the gear shafts of the reducer are connected with the flange plate through the floating spline structures, the design of locking structures at the ends of the gear shafts of the reducer is simplified, the number of parts is small, and the weight of the reducer is reduced. Due to the fact that the position between the flange plate and the gear shafts can be subject to axial position adjustment, the axial gap adjustment requirement of a tail transmission shaft system can be met, and gap measuring and adjusting pad adapting do not need to be carried out; and the mounting adjusting difficulty of the tail transmission shaft system is reduced, the aims of being convenient to maintain and use, and reducing the number of transmission system parts are achieved, and the reducer connecting structure is convenient to mount and adjust and good in maintainability and interchangeability.
Description
Technical field
The present invention relates to helicopter transmission field, especially, relate to a kind of helicopter decelerator attachment structure. Moreover, it relates to a kind of helicopter including above-mentioned helicopter decelerator attachment structure.
Background technology
When drive system is installed on helicopter, it usually needs carry out the axiality adjustment of tail transmission shaft system, to ensure that the shaft coupling tilting tolerance of each support place of tailing axle is in allowed limits. During mounting and adjusting, relate to from main reducing gear to intermediate gearbox, intermediate gearbox is to each parts between tail reducer. Traditional mounting and adjusting structure is by increasing the axial gap that adjustment pad eliminates between installation component between decelerator mounting flange and tail transmission shaft link, is connected through fixing spline between ring flange and the gear shaft of decelerator. This attachment structure relates to the measurement of axial gap between each parts, different-thickness specification adjusts the apolegamy of pad, combination, and during mounting and adjusting, program is complicated, it is long to expend time in and adjusts pad finger gauge lattice and number is more.
Therefore, existing helicopter decelerator attachment structure relates to the measurement of axial gap between each parts, the apolegamy adjusting pad and combination, when there is mounting and adjusting, program is complicated, it is long to expend time in and adjusts pad finger gauge lattice and number is more, brings inconvenience to drive system installation, adjustment and maintenance on helicopter.
Summary of the invention
The invention provides a kind of helicopter decelerator attachment structure and there is its helicopter, to solve existing decelerator attachment structure and there is mounting and adjusting complexity, to expend time in long and to adjust pad finger gauge lattice and number is more, to the technical problem that drive system installation, adjustment and maintenance on helicopter is made troubles.
The technical solution used in the present invention is as follows:
According to an aspect of the present invention, it is provided that a kind of helicopter decelerator attachment structure, including:
For the ring flange of tail transmission shaft of gear shaft and the helicopter of connection reducer,
Tail transmission shaft is affixed through securing member and ring flange, and gear shaft is connected through floating spline structure and ring flange are axially moveable.
Further, ring flange is provided with external splines, and gear shaft is provided with internal spline, external splines and internal spline and collectively forms floating spline structure.
Further, the sealing structure for the lubrication lubricating oil in decelerator is sealed it is provided with between ring flange and the link of decelerator.
Further, gear shaft connects casing through bearing, and the end of casing is provided with the oil sealing bearing for installing lip oil sealing, and lip oil sealing is installed on oil sealing bearing to seal the end of decelerator.
Further, casing is provided with shoulder block at accommodation oil sealing bearing place and is oppositely arranged the back-up ring for oil sealing bearing carries out axial limiting with shoulder block.
Further, between oil sealing bearing and casing, it is provided with sealing ring, and/or
Sealing ring it is provided with between ring flange and gear shaft.
Further, casing and/or gear shaft are provided with the retaining mechanism for bearing carries out axial limiting.
Further, securing member includes bolt, nut and plays the nut shim of locking effect.
Further, the axial float amount of floating spline structure is �� 0.5mm.
According to a further aspect in the invention, a kind of helicopter is also provided for, including above-mentioned helicopter decelerator attachment structure.
The method have the advantages that
Helicopter decelerator attachment structure of the present invention and there is its helicopter, by floating spline structure being adopted between the gear shaft of decelerator and ring flange to be connected, simplify the gear shaft terminal locking mechanism design of decelerator, number of parts is few, alleviate decelerator weight, and owing to ring flange and gear between centers can carry out axial location adjustment, tail transmission shaft system axial gap can be met and adjust requirement, without carrying out clearance measurement and adjusting pad apolegamy, reduce the mounting and adjusting difficulty of tail transmission shaft system, reach maintenance easy to use, reduce the purpose of drive system number of parts, and attachment structure mounting and adjusting of the present invention is convenient, maintainability and interchangeability are good.
Except purpose described above, feature and advantage, the present invention also has other purpose, feature and advantage. Below with reference to figure, the present invention is further detailed explanation.
Accompanying drawing explanation
The accompanying drawing constituting the part of the application is used for providing a further understanding of the present invention, and the schematic description and description of the present invention is used for explaining the present invention, is not intended that inappropriate limitation of the present invention. In the accompanying drawings:
Fig. 1 is the structural representation of preferred embodiment of the present invention helicopter decelerator attachment structure;
Fig. 2 is the structural representation that preferred embodiment of the present invention decelerator attachment structure is connected with tail transmission shaft.
Description of reference numerals:
1, ring flange; 2, gear shaft; 3, casing; 4, oil sealing bearing; 5, lip oil sealing;
6, shoulder block; 7, back-up ring; 8, sealing ring; 9, retaining mechanism;
10, floating spline structure; 11, bolt; 12, nut; 13, nut shim; 14, tail transmission shaft; 15, bearing.
Detailed description of the invention
It should be noted that when not conflicting, the embodiment in the application and the feature in embodiment can be mutually combined. Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
With reference to Fig. 1 and Fig. 2, the preferred embodiments of the present invention provide a kind of helicopter decelerator attachment structure, including: for the ring flange 1 of gear shaft 2 and the tail transmission shaft 14 of helicopter of connection reducer, tail transmission shaft 14 is affixed through securing member and ring flange 1, and gear shaft 2 is connected through floating spline structure 10 is axially moveable with ring flange 1.
The measurement of axial gap between each parts is related to for existing helicopter decelerator attachment structure, adjust apolegamy and the combination of pad, there is program during mounting and adjusting complicated, expend time in length, and adjust pad finger gauge lattice and number more, to drive system installation on helicopter, adjust and safeguard the problem bringing inconvenience, the present embodiment is by being designed as floating spline structure 10 by the ring flange 1 of decelerator Yu tail transmission shaft system junction, tail transmission shaft ties up to when carrying out mounting and adjusting on helicopter, only need axially pulled out by the ring flange 1 with tail transmission shaft 14 link place according to actual needs or advance certain length, then bolt is adopted, ring flange 1 and tail transmission shaft 14 link are attached by nut, fastening, tail transmission shaft system axial gap can be met and adjust requirement, without carrying out clearance measurement and adjusting pad apolegamy, thus reducing the mounting and adjusting difficulty of tail transmission shaft system, improve maintainability and the interchangeability of Helicopter Transmission System.
The present embodiment ring flange 1 is provided with external splines, and gear shaft 2 is provided with internal spline, external splines and internal spline and collectively forms floating spline structure 10.
The sealing structure for the lubrication lubricating oil in decelerator is sealed it is provided with between the present embodiment ring flange 1 and the link of decelerator. With reference to Fig. 1, it is preferable that gear shaft 2 connects casing 3 through bearing 15, and the end of casing 3 is provided with the oil sealing bearing 4 for installing lip oil sealing 5, and lip oil sealing 5 is installed on oil sealing bearing 4 to seal the end of decelerator. And the present embodiment lip oil sealing 5 is arranged on oil sealing bearing 4, it is simple to lip oil sealing 5 is in the dismounting in outfield, inspection, maintenance and replacing. Preferably, casing 3 is provided with shoulder block 6 at accommodation oil sealing bearing 4 place and is oppositely arranged the back-up ring 7 for oil sealing bearing 4 carries out axial limiting with shoulder block 6, oil sealing bearing 4 is axially positioned with coordinating of back-up ring 7 by shoulder block 6, it is simple to lip oil sealing 5 carries out in outfield dismantling, safeguard and changing. In the present embodiment, bearing 15, as a supporting-point of gear shaft 2, utilizes retaining mechanism 9 that bearing 15 is carried out axial restraint. With reference to Fig. 1, in the present embodiment, retaining mechanism 9 is be secured to the locking nut on gear shaft 2 through the bearing inner ring of bearing 15. The present embodiment ring flange 1 does not axially position restriction in decelerator, can pulling out or advance inward certain length (such as: axial design amount of floating is �� 0.5mm) axially outward, during to meet the installation of tail transmission shaft system, the axial gap between each connection member adjusts needs.
With reference to Fig. 1, it is preferable that in order to ensure the oil seal within decelerator, be provided with sealing ring 8 between oil sealing bearing 4 and casing 3, and/or be provided with sealing ring 8 between ring flange 1 and gear shaft 2.
With reference to Fig. 2, the present embodiment securing member includes bolt 11, nut 12 and plays the nut shim 13 of locking effect. when tail transmission shaft ties up to mounting and adjusting on helicopter, the axial gap needs between link and the ring flange 1 of decelerator according to tail transmission shaft 14, ring flange 1 pulls out or advances inward certain length (such as: axial design amount of floating is �� 0.5mm) axially outward, then with bolt 11, nut shim 13, the ring flange 1 of decelerator is fixed together by nut 12 with tail transmission shaft 14 link, thus realizing the axial gap adjustment that tail transmission shaft system installs, pad is adjusted without increasing between connection member, decrease drive system number of parts, use, easy to maintenance, interchangeability is good, the installation of tail transmission shaft system can be completed within a short period of time, adjust, dismounting and maintenance.
According to a further aspect in the invention, a kind of helicopter is also provided for, including the helicopter decelerator attachment structure of above-described embodiment, to meet the demand of helicopter upper reducer Fast Installation and maintenance.
It is appreciated that from the description above, the present embodiment is by being designed as floating spline structure 10 by the ring flange 1 of decelerator Yu tail transmission shaft system junction, tail transmission shaft ties up to when carrying out mounting and adjusting on helicopter, only need axially pulled out by the ring flange 1 with tail transmission shaft 14 link place according to actual needs or advance certain length, then bolt is adopted, ring flange 1 and tail transmission shaft 14 link are attached by nut, fastening, tail transmission shaft system axial gap can be met and adjust requirement, without carrying out clearance measurement and adjusting pad apolegamy, thus reducing the mounting and adjusting difficulty of tail transmission shaft system, improve maintainability and the interchangeability of Helicopter Transmission System.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations. All within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.
Claims (10)
1. a helicopter decelerator attachment structure, it is characterised in that including:
For the ring flange (1) of tail transmission shaft (14) of gear shaft (2) and the helicopter of connection reducer,
Described tail transmission shaft (14) is affixed through securing member and described ring flange (1), and described gear shaft (2) is connected through floating spline structure (10) is axially moveable with described ring flange (1).
2. helicopter decelerator attachment structure according to claim 1, it is characterised in that
Described ring flange (1) is provided with external splines, and described gear shaft (2) is provided with internal spline, described external splines and described internal spline and collectively forms described floating spline structure (10).
3. helicopter decelerator attachment structure according to claim 1, it is characterised in that
The sealing structure for the lubrication lubricating oil in described decelerator is sealed it is provided with between described ring flange (1) and the link of described decelerator.
4. helicopter decelerator attachment structure according to claim 3, it is characterised in that
Described gear shaft (2) connects casing (3) through bearing (15), the end of described casing (3) is provided with the oil sealing bearing (4) for installing lip oil sealing (5), and described lip oil sealing (5) is installed on described oil sealing bearing (4) to seal the end of described decelerator.
5. helicopter decelerator attachment structure according to claim 4, it is characterised in that
Described casing (3) is provided with shoulder block (6) at described oil sealing bearing (4) place of accommodation and is oppositely arranged the back-up ring (7) for described oil sealing bearing (4) carries out axial limiting with described shoulder block (6).
6. helicopter decelerator attachment structure according to claim 5, it is characterised in that
Sealing ring (8) it is provided with between described oil sealing bearing (4) and casing (3), and/or
Sealing ring (8) it is provided with between described ring flange (1) and described gear shaft (2).
7. helicopter decelerator attachment structure according to claim 4, it is characterised in that
Described casing (3) and/or described gear shaft (2) are provided with the retaining mechanism (9) for described bearing (15) carries out axial limiting.
8. helicopter decelerator attachment structure according to claim 1, it is characterised in that
Described securing member includes bolt (11), nut (12) and plays the nut shim (13) of locking effect.
9. helicopter decelerator attachment structure according to claim 1, it is characterised in that
The axial float amount of described floating spline structure (10) is �� 0.5mm.
10. a helicopter, it is characterised in that include as arbitrary in claim 1 to 9 as described in helicopter decelerator attachment structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610003815.4A CN105620738A (en) | 2016-01-05 | 2016-01-05 | Reducer connecting structure for helicopter and helicopter with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610003815.4A CN105620738A (en) | 2016-01-05 | 2016-01-05 | Reducer connecting structure for helicopter and helicopter with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105620738A true CN105620738A (en) | 2016-06-01 |
Family
ID=56036168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610003815.4A Pending CN105620738A (en) | 2016-01-05 | 2016-01-05 | Reducer connecting structure for helicopter and helicopter with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105620738A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111301671A (en) * | 2020-03-19 | 2020-06-19 | 常州华创航空科技有限公司 | Helicopter tail propeller |
| CN112238948A (en) * | 2020-10-16 | 2021-01-19 | 中国直升机设计研究所 | Quick-release helicopter tail transmission shaft assembly |
| CN113431889A (en) * | 2021-06-02 | 2021-09-24 | 中国航发湖南动力机械研究所 | Output shaft bearing oil feeding mechanism, intermediate speed reducer and helicopter |
Citations (7)
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|---|---|---|---|---|
| US4344305A (en) * | 1979-03-22 | 1982-08-17 | British Aerospace | Torque shaft coupling |
| JPH09105420A (en) * | 1995-10-11 | 1997-04-22 | Matsui Seisakusho:Kk | Propeller shaft |
| WO2008031738A1 (en) * | 2006-09-14 | 2008-03-20 | Zf Friedrichshafen Ag | Connecting shaft in a drive train of an all-wheel drive vehicle |
| CN101363479A (en) * | 2008-09-27 | 2009-02-11 | 中国船舶重工集团公司第七一一研究所 | Floating connection device between hydraulic power unit gear box and oil pump for engineering ship |
| CN201882135U (en) * | 2010-10-28 | 2011-06-29 | 沈阳金杯恒隆汽车转向系统有限公司 | Limiting mechanism assembly of steering engine |
| CN102400641A (en) * | 2011-11-07 | 2012-04-04 | 连云港天明装备有限公司 | Floating device of drilling machine |
| 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 |
-
2016
- 2016-01-05 CN CN201610003815.4A patent/CN105620738A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4344305A (en) * | 1979-03-22 | 1982-08-17 | British Aerospace | Torque shaft coupling |
| JPH09105420A (en) * | 1995-10-11 | 1997-04-22 | Matsui Seisakusho:Kk | Propeller shaft |
| WO2008031738A1 (en) * | 2006-09-14 | 2008-03-20 | Zf Friedrichshafen Ag | Connecting shaft in a drive train of an all-wheel drive vehicle |
| CN101363479A (en) * | 2008-09-27 | 2009-02-11 | 中国船舶重工集团公司第七一一研究所 | Floating connection device between hydraulic power unit gear box and oil pump for engineering ship |
| CN201882135U (en) * | 2010-10-28 | 2011-06-29 | 沈阳金杯恒隆汽车转向系统有限公司 | Limiting mechanism assembly of steering engine |
| CN102400641A (en) * | 2011-11-07 | 2012-04-04 | 连云港天明装备有限公司 | Floating device of drilling machine |
| 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 |
Non-Patent Citations (1)
| Title |
|---|
| 康丽霞等: "直升机传动系统花键连接轴的动力失稳", 《北京航空航天大学学报》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111301671A (en) * | 2020-03-19 | 2020-06-19 | 常州华创航空科技有限公司 | Helicopter tail propeller |
| CN112238948A (en) * | 2020-10-16 | 2021-01-19 | 中国直升机设计研究所 | Quick-release helicopter tail transmission shaft assembly |
| CN113431889A (en) * | 2021-06-02 | 2021-09-24 | 中国航发湖南动力机械研究所 | Output shaft bearing oil feeding mechanism, intermediate speed reducer and helicopter |
| CN113431889B (en) * | 2021-06-02 | 2022-06-21 | 中国航发湖南动力机械研究所 | Output shaft bearing oil feeding mechanism, intermediate speed reducer and helicopter |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160601 |
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| RJ01 | Rejection of invention patent application after publication |