CN112937881A - Face gear transmission coaxial reversing device - Google Patents
Face gear transmission coaxial reversing device Download PDFInfo
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- CN112937881A CN112937881A CN202110173469.5A CN202110173469A CN112937881A CN 112937881 A CN112937881 A CN 112937881A CN 202110173469 A CN202110173469 A CN 202110173469A CN 112937881 A CN112937881 A CN 112937881A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 52
- 230000007246 mechanism Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 2
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- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D35/00—Transmitting power from power plants to propellers or rotors; Arrangements of transmissions
- B64D35/04—Transmitting power from power plants to propellers or rotors; Arrangements of transmissions characterised by the transmission driving a plurality of propellers or rotors
- B64D35/06—Transmitting power from power plants to propellers or rotors; Arrangements of transmissions characterised by the transmission driving a plurality of propellers or rotors the propellers or rotors being counter-rotating
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- Engineering & Computer Science (AREA)
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Abstract
The invention belongs to the technical field of helicopter design, and discloses a coaxial reversing device for face gear transmission, which comprises: the transmission mechanism comprises an inner rotor shaft, an outer rotor shaft, an upper end face gear, a lower end face gear, a reversing idle wheel and a transmission cylindrical gear tail wheel; the inner rotor shaft and the outer rotor shaft are connected through a bearing, the gear on the upper end face is connected with the outer rotor shaft through a spline, and the gear on the lower end face is connected with the inner rotor shaft through a spline; the reversing idle gear and the tail transmission cylindrical gear are respectively positioned between the upper end face gear and the lower end face gear, the reversing idle gear is simultaneously meshed with the upper end face gear and the lower end face gear, and the tail transmission cylindrical gear is simultaneously meshed with the upper end face gear and the lower end face gear. The coaxial contrarotation of the inner rotor shaft and the outer rotor shaft is realized on the premise of ensuring simple structure and meeting the requirement of space limitation.
Description
Technical Field
The invention belongs to the technical field of helicopters, and particularly relates to a coaxial reversing device for face gear transmission.
Background
Generally, a coaxial reversing device adopts compound planetary contra-rotating transmission and spiral bevel gear contra-rotating transmission, but the space and the transmission ratio are limited sometimes, and the mode is difficult to realize.
In a helicopter transmission system, the portability and the flexibility of a helicopter are directly influenced by the volume and the weight of a transmission part, and if the composite planetary contra-rotating transmission and the spiral bevel gear contra-rotating transmission are adopted, the number of parts is large, the mass is heavy, and the requirement on positioning a receiver is very high.
Disclosure of Invention
The invention aims to provide a coaxial reversing device for face gear transmission, which realizes coaxial contrarotation of an inner rotor shaft and an outer rotor shaft on the premise of ensuring simple structure and meeting the requirement of space limitation. The coaxial reversing device adopting the face gear transmission does not need to accurately position the cylindrical gear, can adapt to the micro displacement caused by the deformation of the main reducer casing, and has the advantages of small number of parts, large single-stage transmission ratio, and higher reliability and flexibility.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a face-gear driven coaxial inversion device, the device comprising: the transmission mechanism comprises an inner rotor shaft, an outer rotor shaft, an upper end face gear, a lower end face gear, a reversing idle wheel and a transmission cylindrical gear tail wheel;
the inner rotor shaft and the outer rotor shaft are connected through a bearing, the gear on the upper end face is connected with the outer rotor shaft through a spline, and the gear on the lower end face is connected with the inner rotor shaft through a spline;
the reversing idle gear and the tail transmission cylindrical gear are respectively positioned between the upper end face gear and the lower end face gear, the reversing idle gear is simultaneously meshed with the upper end face gear and the lower end face gear, and the tail transmission cylindrical gear is simultaneously meshed with the upper end face gear and the lower end face gear.
The technical scheme of the invention has the characteristics and further improvements that:
(1) the inner rotor shaft is used as an input end and connected with an external driving device, the inner rotor shaft drives the lower end face gear to rotate, the lower end face gear is reversed through the reversing idle wheel and drives the upper end face gear to rotate, and then the outer rotor shaft is driven to rotate and is an output end.
(2) The tail transmission cylindrical gear is meshed between the upper end face gear and the lower end face gear, and partial power of the lower end face gear is transmitted to an external load.
(3) The inner rotor shaft and the outer rotor shaft rotate around the same axis. Such that the inner and outer rotor shafts are coaxial.
(4) The inner rotor shaft and the outer rotor shaft are connected through a needle bearing. The axial and radial loads of the inner rotor shaft and the outer rotor shaft can be borne, and the radial structure is compact.
(5) The output ends of the inner rotor shaft and the outer rotor shaft respectively drive the blades of the respective hubs to reversely rotate along the same axis. The vibration of the helicopter during movement can be counteracted, and larger lift force and speed are provided for the helicopter.
(6) The external load is a tail drive shaft of the helicopter. The technical effects are as follows: the tail transmission shaft of the helicopter is powered to drive the tail rotor of the helicopter to rotate.
(7) The shaft diameters of the reversing idle wheel and the tail transmission cylindrical gear are respectively assembled on the casing through bearings. When the casing has small deformation, the reversing idle wheel and the tail transmission cylindrical gear can adapt to the small deformation of the casing, so that the meshing of the reversing idle wheel and the tail transmission cylindrical gear with the upper face gear and the lower face gear is not influenced.
The embodiment of the invention provides a coaxial reversing device for face gear transmission, which comprises an inner rotor wing shaft, an outer rotor wing shaft, an upper end face gear, a lower end face gear, a reversing idle gear and a tail transmission cylindrical gear. The reversing idle wheel and the tail transmission cylindrical gear are positioned between the upper end face gear and the lower end face gear and are simultaneously meshed with the upper end face gear and the lower end face gear. The inner rotor shaft is used as an input end, and the outer rotor shaft is driven to rotate along the direction opposite to the rotation direction of the inner rotor shaft through the interaction of the upper end face gear, the lower end face gear and the reversing idle wheel, so that coaxial contrarotation is realized.
Drawings
FIG. 1 is a schematic view of a face gear driven coaxial reversing device;
FIG. 2 is a schematic drive diagram of a face gear driven coaxial reversing device;
1-inner rotor shaft, 2-outer rotor shaft, 3-upper end face gear, 4-reversing idle gear, 5-tail transmission cylindrical gear and 6-lower end face gear.
Detailed Description
The technical solution of the present invention is further explained with reference to the drawings and the detailed description.
The embodiment of the invention provides a face gear transmission coaxial reversing device, which comprises an inner rotor wing shaft 1, a lower end face gear 6, a reversing idle gear 4, a tail transmission outlet cylindrical gear 5, an upper end face gear 3 and an outer rotor wing shaft 2 as shown in figure 1.
The inner rotor shaft and the outer rotor shaft are connected through a bearing, the gear on the upper end face is connected with the outer rotor shaft through a spline, and the gear on the lower end face is connected with the inner rotor shaft through a spline; interior rotor shaft 1 is connected with lower terminal surface gear 6 as the input, and lower terminal surface gear 6 is connected the switching-over idler 4, and switching-over idler 4 plays the switching-over effect, and switching-over idler 4 connects up end gear 3, and outer rotor shaft 2 is connected to up end gear 3, and outer rotor shaft 2 is the rotor output, and the direction of rotation is opposite with interior rotor shaft 1. The tail transmission outlet cylindrical gear 5 is a tail transmission output end and is positioned between the upper end face gear 3 and the lower end face gear 6 and is simultaneously meshed with the upper end face gear and the lower end face gear, and the tail transmission outlet cylindrical gear 5 can be connected with a tail transmission shaft of the helicopter to provide power for the helicopter. The inner rotor shaft 1 and the outer rotor shaft 2 have the same axis and opposite rotation directions, so that the structure realizes coaxial contrarotation of double rotors.
The reversing idle gear and the tail transmission cylindrical gear are respectively positioned between the upper end face gear and the lower end face gear, the reversing idle gear is simultaneously meshed with the upper end face gear and the lower end face gear, and the tail transmission cylindrical gear is simultaneously meshed with the upper end face gear and the lower end face gear.
(1) The inner rotor shaft is used as an input end and connected with an external driving device, the inner rotor shaft drives the lower end face gear to rotate, the lower end face gear is reversed through the reversing idle wheel and drives the upper end face gear to rotate, and then the outer rotor shaft is driven to rotate and is an output end.
(2) The tail transmission cylindrical gear is meshed between the upper end face gear and the lower end face gear, and partial power of the lower end face gear is transmitted to an external load.
(3) The inner rotor shaft and the outer rotor shaft rotate around the same axis. Such that the inner and outer rotor shafts are coaxial.
(4) The inner rotor shaft and the outer rotor shaft are connected through a needle bearing. The axial and radial loads of the inner rotor shaft and the outer rotor shaft can be borne, and the radial structure is compact.
(5) The output ends of the inner rotor shaft and the outer rotor shaft respectively drive the blades of the respective hubs to reversely rotate along the same axis. The vibration of the helicopter during movement can be counteracted, and larger lift force and speed are provided for the helicopter.
(6) The external load is a tail drive shaft of the helicopter. The technical effects are as follows: the tail transmission shaft of the helicopter is powered to drive the tail rotor of the helicopter to rotate.
(7) The shaft diameters of the reversing idle wheel and the tail transmission cylindrical gear are respectively assembled on the casing through bearings. When the casing has small deformation, the reversing idle wheel and the tail transmission cylindrical gear can adapt to the small deformation of the casing, so that the meshing of the reversing idle wheel and the tail transmission cylindrical gear with the upper face gear and the lower face gear is not influenced.
As shown in fig. 2, in the coaxial reversing device of face gear transmission according to the embodiment of the present invention, the input end and the output end are respectively connected to the driving device and the load, assuming that "(+)" is rotating in the forward direction and "(-) -is rotating in the reverse direction.
The implementation process comprises the following steps: the power device is connected with the inner rotor shaft of the structure and drives the inner rotor shaft to rotate in the positive direction (++). The inner rotor shaft is connected with the lower end face gear through a spline to drive the lower end face gear to rotate in the same direction. The reversing idle wheel is positioned between the upper end face gear and the lower end face gear and is simultaneously meshed with the upper end face gear and the lower end face gear, the lower end face gear transmits power to the upper end face gear through the reversing idle wheel to drive the upper end face gear to rotate, and the direction of the upper end face gear is opposite to that of the lower end face gear, namely, (-) -is obtained. The upper face gear and the outer rotor shaft are connected by a spline, and the rotation directions of the upper face gear and the outer rotor shaft are consistent and are (-) respectively. The inner rotor shaft and the outer rotor shaft respectively drive the blades of the respective hubs to reversely rotate along the same axis, and the tail of the inner rotor shaft is transmitted out of the cylindrical gear to serve as an output end, so that partial power of the gears on the upper end face and the lower end face can be transmitted to an external load.
The embodiment of the invention provides a coaxial reversing device for face gear transmission, which comprises an inner rotor wing shaft, an outer rotor wing shaft, an upper end face gear, a lower end face gear, a reversing idle gear and a tail transmission cylindrical gear. The reversing idle wheel and the tail transmission cylindrical gear are positioned between the upper end face gear and the lower end face gear and are simultaneously meshed with the upper end face gear and the lower end face gear. The inner rotor shaft is used as an input end, and the outer rotor shaft is driven to rotate along the direction opposite to the rotation direction of the inner rotor shaft through the interaction of the upper end face gear, the lower end face gear and the reversing idle wheel, so that coaxial contrarotation is realized.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A face-gear driven coaxial inversion apparatus, comprising: an inner rotor shaft (1), an outer rotor shaft (2), an upper end face gear (3), a lower end face gear (6), a reversing idle wheel (4) and a tail transmission cylindrical gear (5);
the inner rotor shaft (1) is connected with the outer rotor shaft (2) through a bearing, the upper end face gear (3) is connected with the outer rotor shaft (2) through a spline, and the lower end face gear (6) is connected with the inner rotor shaft (1) through a spline;
the reversing idle gear (4) and the tail transmission output cylindrical gear (5) are respectively positioned between the upper end face gear (3) and the lower end face gear (6), the reversing idle gear (4) is simultaneously meshed with the upper end face gear (3) and the lower end face gear (6), and the tail transmission output cylindrical gear (5) is simultaneously meshed with the upper end face gear (3) and the lower end face gear (6).
2. A face gear driven coaxial inversion device according to claim 1,
the inner rotor shaft is used as an input end and connected with an external driving device, the inner rotor shaft drives the lower end face gear to rotate, the lower end face gear is reversed through the reversing idle wheel and drives the upper end face gear to rotate, and then the outer rotor shaft is driven to rotate and is an output end.
3. A face gear driven coaxial inversion device according to claim 2,
the tail transmission cylindrical gear is meshed between the upper end face gear and the lower end face gear, and partial power of the lower end face gear is transmitted to an external load.
4. A face gear driven coaxial inversion device according to claim 1, wherein the inner and outer rotor shafts rotate about the same axis.
5. A face gear driven coaxial inversion unit according to claim 1, in which the inner and outer rotor shafts are connected by needle bearings.
6. A face gear driven coaxial inversion device according to claim 2,
the output ends of the inner rotor shaft and the outer rotor shaft respectively drive the blades of the respective hubs to reversely rotate along the same axis.
7. A face gear driven coaxial inversion device according to claim 3,
the external load is a tail drive shaft of the helicopter.
8. Coaxial reversing device according to claim 1, characterized in that the shaft diameters of the reversing idler gear (4) and the tail-out spur gear (5) are respectively mounted on the casing by bearings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110173469.5A CN112937881A (en) | 2021-02-09 | 2021-02-09 | Face gear transmission coaxial reversing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110173469.5A CN112937881A (en) | 2021-02-09 | 2021-02-09 | Face gear transmission coaxial reversing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112937881A true CN112937881A (en) | 2021-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110173469.5A Pending CN112937881A (en) | 2021-02-09 | 2021-02-09 | Face gear transmission coaxial reversing device |
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| CN (1) | CN112937881A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB145013A (en) * | 1919-06-14 | 1921-09-12 | Peter Cooper Hewitt | Improvements in and relating to power transmitting gearing especially applicable to helicopters |
| US20030071167A1 (en) * | 2001-10-02 | 2003-04-17 | Lionel Thomassey | Pivoting power transmission unit with peripheral face toothed gearwheels of the face gear type |
| US20030097893A1 (en) * | 2001-11-26 | 2003-05-29 | Gmirya Yuriy Z. | Split-torque face gear transmission |
| EP1734287A1 (en) * | 2005-06-17 | 2006-12-20 | Jtekt Corporation | Differential gearing for vehicle |
| JP2007232162A (en) * | 2006-03-03 | 2007-09-13 | Toyota Industries Corp | Idle gear support structure |
| US20110194935A1 (en) * | 2010-02-05 | 2011-08-11 | Sikorsky Aircraft Corporation | Counter rotating facegear gearbox |
| CN108006203A (en) * | 2017-12-29 | 2018-05-08 | 江苏方阔航空科技有限公司 | A kind of electric control stepless big payload helicopter variable speed gearbox |
| CN108082463A (en) * | 2018-01-12 | 2018-05-29 | 中国航发哈尔滨东安发动机有限公司 | A kind of mounting structure of lifting airscrew axis |
| US20180222578A1 (en) * | 2015-08-04 | 2018-08-09 | Sikorsky Aircraft Corporation | Coaxial split torque gear box |
| CN110683042A (en) * | 2019-11-11 | 2020-01-14 | 天津工业大学 | Coaxial double-oar eight rotor crafts |
| CN111268116A (en) * | 2020-02-27 | 2020-06-12 | 西安工业大学 | Face gear coaxial contra-rotating dual-rotor transmission mechanism |
| CN111483590A (en) * | 2020-05-26 | 2020-08-04 | 清华大学 | Coaxial contra-rotating dual-rotor speed reduction transmission structure |
-
2021
- 2021-02-09 CN CN202110173469.5A patent/CN112937881A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB145013A (en) * | 1919-06-14 | 1921-09-12 | Peter Cooper Hewitt | Improvements in and relating to power transmitting gearing especially applicable to helicopters |
| US20030071167A1 (en) * | 2001-10-02 | 2003-04-17 | Lionel Thomassey | Pivoting power transmission unit with peripheral face toothed gearwheels of the face gear type |
| US20030097893A1 (en) * | 2001-11-26 | 2003-05-29 | Gmirya Yuriy Z. | Split-torque face gear transmission |
| EP1734287A1 (en) * | 2005-06-17 | 2006-12-20 | Jtekt Corporation | Differential gearing for vehicle |
| JP2007232162A (en) * | 2006-03-03 | 2007-09-13 | Toyota Industries Corp | Idle gear support structure |
| US20110194935A1 (en) * | 2010-02-05 | 2011-08-11 | Sikorsky Aircraft Corporation | Counter rotating facegear gearbox |
| US20180222578A1 (en) * | 2015-08-04 | 2018-08-09 | Sikorsky Aircraft Corporation | Coaxial split torque gear box |
| CN108006203A (en) * | 2017-12-29 | 2018-05-08 | 江苏方阔航空科技有限公司 | A kind of electric control stepless big payload helicopter variable speed gearbox |
| CN108082463A (en) * | 2018-01-12 | 2018-05-29 | 中国航发哈尔滨东安发动机有限公司 | A kind of mounting structure of lifting airscrew axis |
| CN110683042A (en) * | 2019-11-11 | 2020-01-14 | 天津工业大学 | Coaxial double-oar eight rotor crafts |
| CN111268116A (en) * | 2020-02-27 | 2020-06-12 | 西安工业大学 | Face gear coaxial contra-rotating dual-rotor transmission mechanism |
| CN111483590A (en) * | 2020-05-26 | 2020-08-04 | 清华大学 | Coaxial contra-rotating dual-rotor speed reduction transmission structure |
Non-Patent Citations (1)
| Title |
|---|
| 陈康等: "直升机结构与***", vol. 2, 清华大学出版社 * |
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Application publication date: 20210611 |