CN203463563U - Transmission mechanism of double-rotor helicopter - Google Patents
Transmission mechanism of double-rotor helicopter Download PDFInfo
- Publication number
- CN203463563U CN203463563U CN201320474865.2U CN201320474865U CN203463563U CN 203463563 U CN203463563 U CN 203463563U CN 201320474865 U CN201320474865 U CN 201320474865U CN 203463563 U CN203463563 U CN 203463563U
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- CN
- China
- Prior art keywords
- rotor
- drive shaft
- main drive
- bearing
- gear
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- 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 - Fee Related
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Abstract
The utility model discloses a transmission mechanism of a double-rotor helicopter. A lower rotor (3) is fixed at the bottom of a casing (5) through a connection frame (4); the top of the casing (5) is sealed through a top cover (7); an inner gear ring (9) is fixed inside the casing (5); the center of the inner gear ring (9) comprises a sun wheel (10) which fixedly sleeves a main transmission shaft (1); a plurality of dual planetary gears (11) which are uniformly distributed circumferentially are arranged between the sun wheel (10) and the inner gear ring (9); one gear disk of every dual planetary gear (11) is meshed with the sun wheel (10) and the other gear disk is meshed with the inner gear ring (9). The transmission mechanism of the double-rotor helicopter has the advantages of being simple in structure, convenient to assemble, low in manufacturing cost, good in transmission stability and reliability, skillful in design, easy to transform, low in transformation cost and the like.
Description
Technical field
The utility model belongs to helicopter technical field, specifically, and the particularly driving mechanism on dual-rotor helicopter.
Background technique
At present, driving mechanism on dual-rotor helicopter adopts close coupled type single shaft drive mechanism, there is complex structure, assembling difficulty, manufacture cost is high, maintenance is inconvenient, the stationarity of transmission and the deficiency such as reliability is poor, has seriously restricted applying of dual-rotor helicopter.
Model utility content
Technical problem to be solved in the utility model is to provide a kind of dual-rotor helicopter driving mechanism simple in structure, easy to assembly.
The technical solution of the utility model is as follows: a kind of dual-rotor helicopter driving mechanism, on main drive shaft (1), be provided with upper rotor (2) and lower rotor (3), its key is: described lower rotor (3) fixes by link press span (4) and the bottom of housing (5), link press span (4) is bearing on axle sleeve (6) by bearing, and axle sleeve (6) is placed on main drive shaft (1) admittedly, the top of described housing (5) is sealed by top cover (7), between top cover (7) and main drive shaft (1), be provided with lip-type packing (8), the inside of described housing (5) is fixed with ring gear (9), the central authorities of this ring gear (9) have sun gear (10), sun gear (10) is placed on main drive shaft (1) admittedly, between described sun gear (10) and ring gear (9), be provided with a plurality of compound planet gears (11) that distribute by even circumferential, fluted disc of this compound planet gear (11) and sun gear (10) engagement, another fluted disc and ring gear (9) engagement, the upper end of described compound planet gear (11) is supported on upper cover (12) by bearing, upper cover (12) supports mutually by bearing and main drive shaft (1), the lower end of compound planet gear (11) is supported on geared sleeve (13) by bearing, described geared sleeve (13) is sleeved on axle sleeve (6).
Adopt above technological scheme, main drive shaft rotates under the driving of power, and main drive shaft drives the upper rotor of upper end to rotate together; Meanwhile, main drive shaft drives sun gear rotation, makes sun gear drive ring gear to rotate by compound planet gear, and the housing fixing with ring gear drives down rotor wing rotation by link press span, and the sense of rotation of lower rotor is contrary with upper rotor.The utility model can realize two respectively independent non-interfering rotors towards contrary direction rotation, simple in structure, easy to assembly, low cost of manufacture not only, and be convenient to safeguard the stationarity of transmission and good reliability.
In order to simplify assembly technology, it is firm to make to be connected between lower rotor and housing, the upper and lower end of described link press span (4) is flange plate structure, the flange plate of link press span (4) upper end is fixed by the bottom of equally distributed bolt and housing (5) on circumference, and the flange plate of link press span (4) lower end is fixing by equally distributed bolt on circumference and lower rotor (3).
It is upper that described upper rotor (2) is sleeved on main drive shaft (1) by key (14), and rotor on this (2) is by nut (15) locking of top, and described nut (15) is spacing by cotter pin (16), and cotter pin (16) is radially located on main drive shaft (1).Above structure is easy to assembly, quick on the one hand, on the other hand, can effectively prevent rotor generation axial float.
Beneficial effect: the utility model is simple in structure, easy to assembly, low cost of manufacture, the stationarity of transmission and good reliability, have the features such as design is ingenious, transformation is easy, reforming cost is low.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is that ring gear is by the schematic diagram of compound planet gear and sun gear engagement.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail:
As shown in Figure 1, in the upper end of main drive shaft 1, rotor 2 is set, on this, rotor 2 is sleeved on main drive shaft 1 by key 14, and locked by nut 15, described nut 15 is positioned at the top of rotor 2, this nut 15 and main drive shaft 1 screw-thread fit, nut 15 is upwards spacing by cotter pin 16, and cotter pin 16 is radially located on main drive shaft 1.
As shown in Figure 1 and Figure 2, housing 5 is set below upper rotor 2, this housing 5 is located on the outside of main drive shaft 1.The top of housing 5 is sealed by top cover 7, and this top cover 7 fixes by many bolts and housing 5, between top cover 7 and main drive shaft 1, is provided with lip-type packing 8.The inside of described housing 5 has ring gear 9, and this ring gear 9 fixes by bolt and housing 5.Central authorities at ring gear 9 have sun gear 10, and sun gear 10 is placed on main drive shaft 1 admittedly.Between described sun gear 10 and ring gear 9, be provided with a plurality of compound planet gears 11 that distribute by even circumferential, the number of compound planet gear 11 is definite according to actual needs, and the present embodiment is preferably 5.Fluted disc of described compound planet gear 11 and sun gear 10 engagements, another fluted disc meshes with ring gear 9.The upper end of described compound planet gear 11 is supported on upper cover 12 by bearing, upper cover 12 supports mutually by bearing and main drive shaft 1, the lower end of compound planet gear 11 is supported on geared sleeve 13 by bearing, and described geared sleeve 13 is sleeved on axle sleeve 6, and axle sleeve 6 is placed on main drive shaft 1 admittedly.
As shown in Figure 1, be provided with link press span 4 below housing 5, link press span 4 is bearing on axle sleeve 6 by upper and lower two bearings.The upper and lower end of link press span 4 is flange plate structure, and the flange plate of link press span 4 upper ends is fixed by the bottom of equally distributed bolt on circumference and housing 5, and the flange plate of link press span 4 lower ends is fixing by equally distributed bolt on circumference and lower rotor 3.
Working principle of the present utility model is as follows:
Main drive shaft 1 rotates under the driving of power, and main drive shaft 1 drives the upper rotor 2 of upper end to rotate together; Simultaneously, main drive shaft 1 drives sun gear 10 rotations, make sun gear 10 drive ring gear 9 to rotate by compound planet gear 11, the housing 5 fixing with ring gear 9 drives lower rotor 3 rotations by link press span 4, and the sense of rotation of lower rotor 3 is contrary with upper rotor 2.
Claims (3)
1. a dual-rotor helicopter driving mechanism, on main drive shaft (1), be provided with upper rotor (2) and lower rotor (3), it is characterized in that: described lower rotor (3) fixes by link press span (4) and the bottom of housing (5), link press span (4) is bearing on axle sleeve (6) by bearing, and axle sleeve (6) is placed on main drive shaft (1) admittedly, the top of described housing (5) is sealed by top cover (7), between top cover (7) and main drive shaft (1), be provided with lip-type packing (8), the inside of described housing (5) is fixed with ring gear (9), the central authorities of this ring gear (9) have sun gear (10), sun gear (10) is placed on main drive shaft (1) admittedly, between described sun gear (10) and ring gear (9), be provided with a plurality of compound planet gears (11) that distribute by even circumferential, fluted disc of this compound planet gear (11) and sun gear (10) engagement, another fluted disc and ring gear (9) engagement, the upper end of described compound planet gear (11) is supported on upper cover (12) by bearing, upper cover (12) supports mutually by bearing and main drive shaft (1), the lower end of compound planet gear (11) is supported on geared sleeve (13) by bearing, described geared sleeve (13) is sleeved on axle sleeve (6).
2. according to the dual-rotor helicopter driving mechanism described in claims 1, it is characterized in that: the upper and lower end of described link press span (4) is flange plate structure, the flange plate of link press span (4) upper end is fixed by the bottom of equally distributed bolt and housing (5) on circumference, and the flange plate of link press span (4) lower end is fixing by equally distributed bolt on circumference and lower rotor (3).
3. according to the dual-rotor helicopter driving mechanism described in claims 1 or 2, it is characterized in that: described upper rotor (2) is sleeved on main drive shaft (1) by key (14), rotor on this (2) is by nut (15) locking of top, described nut (15) is spacing by cotter pin (16), and cotter pin (16) is radially located on main drive shaft (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320474865.2U CN203463563U (en) | 2013-08-05 | 2013-08-05 | Transmission mechanism of double-rotor helicopter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320474865.2U CN203463563U (en) | 2013-08-05 | 2013-08-05 | Transmission mechanism of double-rotor helicopter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203463563U true CN203463563U (en) | 2014-03-05 |
Family
ID=50175930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320474865.2U Expired - Fee Related CN203463563U (en) | 2013-08-05 | 2013-08-05 | Transmission mechanism of double-rotor helicopter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203463563U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108082464A (en) * | 2016-11-21 | 2018-05-29 | 瑞士玛瑞恩克直升机公司 | Lifting airscrew speed changer |
-
2013
- 2013-08-05 CN CN201320474865.2U patent/CN203463563U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108082464A (en) * | 2016-11-21 | 2018-05-29 | 瑞士玛瑞恩克直升机公司 | Lifting airscrew speed changer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140305 Termination date: 20170805 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |