CN109823519A - A kind of pitch-changing mechanism of coaxial co-axial contra rotating propeller - Google Patents
A kind of pitch-changing mechanism of coaxial co-axial contra rotating propeller Download PDFInfo
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- CN109823519A CN109823519A CN201811518873.6A CN201811518873A CN109823519A CN 109823519 A CN109823519 A CN 109823519A CN 201811518873 A CN201811518873 A CN 201811518873A CN 109823519 A CN109823519 A CN 109823519A
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- 230000007246 mechanism Effects 0.000 title claims abstract description 17
- 239000003921 oil Substances 0.000 claims abstract description 173
- 239000010687 lubricating oil Substances 0.000 claims abstract description 28
- 230000005540 biological transmission Effects 0.000 claims description 3
- 235000015170 shellfish Nutrition 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 11
- 238000006073 displacement reaction Methods 0.000 description 8
- 239000010705 motor oil Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 230000003827 upregulation Effects 0.000 description 1
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Abstract
The invention belongs to properller designing techniques, are related to a kind of pitch-changing mechanism of coaxial co-axial contra rotating propeller.The present invention includes bow oar oil cylinder, pulling sleeve, piston, beta pipe outer tube, beta pipe inner tube, oil pipe, cover board, rear paddle oil cylinder, rear paddle adapter, lubricating oil adapter, bow oar adapter, fuse；Bow oar oil cylinder is divided into greatly away from oil pocket C and narrow spacing oil pocket D by the piston；Rear paddle oil cylinder is divided into greatly away from oil pocket A and narrow spacing oil pocket B by the oil pipe.By being respectively arranged two sets of pitch-changing mechanisms the control respectively to front-seat propeller and heel row airscrewpiston may be implemented, so that the efficiency of two propellers reaches highest, resulting pulling force is maximum, promotes the stroke of aircraft in the present invention.
Description
Technical field
The invention belongs to properller designing techniques, are related to a kind of pitch-changing mechanism of coaxial co-axial contra rotating propeller.
Background technique
Our common turbo oar engines (such as -6 engine of whirlpool paddle and T56 engine), one propeller of driven by engine
Rotation, when propeller is docked with engine, by the oil circuit and propeller adjusting control dress in propeller by the way of adapter
The control oil circuit for setting output is connected, to realize the blade angular adjustment of propeller.
Coaxial co-axial contra rotating propeller is made of front-seat propeller and heel row propeller, and the direction of rotation of front two rows paddle is different.
The present invention be directed to the coaxial co-axial contra rotating propeller using mechanical-hydraulic regulative mode, and the respective a set of displacement machine of bow oar and rear paddle
Structure.Since the structure of the mating engine of coaxial co-axial contra rotating propeller limits, engine provides two output shafts, and torsion pass axis is for driving
The rotation of bow oar but pulling force/negative pulling force of propeller is not transmitted, paddle shaft is used for the rotation of paddle after driving and transmits the drawing of propeller
Power/negative pulling force.Due to the limitation of space structure, torsion pass axis is passed through from paddle shaft center, after design when paddle displacement oil circuit, needs to examine
Consider the Layout Problem of torsion pass axis and adapter.It is provided since the oil circuit of bow oar displacement is also required to engine, therefore, it is necessary to solve
The problem of how the lubricating oil oil circuit of engine enters bow oar.
Summary of the invention
The object of the present invention is to provide a kind of pitch-changing mechanism of coaxial co-axial contra rotating propeller, realize that bow oar and rear paddle become automatically
Away from in away from the function of restraint.
The technical scheme is that a kind of pitch-changing mechanism of coaxial co-axial contra rotating propeller, including bow oar oil cylinder, pulling sleeve, work
Plug, the switching of beta pipe outer tube, beta pipe inner tube, oil pipe, cover board, rear paddle oil cylinder, rear paddle adapter, lubricating oil adapter, bow oar
Device, fuse；Bow oar oil cylinder is divided into greatly away from oil pocket C and narrow spacing oil pocket D by the piston；Rear paddle oil cylinder is divided into greatly by the oil pipe
Away from oil pocket A and narrow spacing oil pocket B.
Each propeller at least provides three oil circuits, be respectively greatly away from oil circuit, narrow spacing oil circuit and in away from restraint oil circuit, it is preceding
Two propellers are no less than six oil circuits afterwards, realize bow oar and rear paddle the automatic adjustable-pitch function away from restraint in；In engine paddle
Shaft end is equipped with the lubricating oil adapter of propeller, and the oil circuit of rear paddle enters directly into rear paddle, the lubricating oil transmission of rear paddle by adapter
It is realized by oil pipe；The lubricating oil of bow oar enters in bow oar adapter into lubricating oil adapter, engine driving torsional axis, the oil circuit of bow oar
It is entered in the axle sleeve inside torsion pass axis through torsion pass axis, the lubricating oil transmission of bow oar is realized by beta pipe outer tube and beta pipe inner tube；
In the lubricating oil adapter of rear paddle: big away from oil pocket and narrow spacing oil with propeller respectively away from oil circuit and narrow spacing oil circuit greatly
Chamber is connected；In away from restraint oil circuit be connected away from oil pocket greatly, but the axial position different from propeller oil pipe is distributed in away from oil circuit greatly
It sets.
In bow oar adapter: big away from oil pocket and narrow spacing oil pocket phase with propeller respectively away from oil circuit and narrow spacing oil circuit greatly
Even；In be connected away from restraint oil circuit with narrow spacing oil pocket, but be distributed on the different axial position of beta pipe outer tube from narrow spacing oil circuit.
The beneficial effects of the present invention are: the present invention may be implemented by being respectively arranged two sets of pitch-changing mechanisms to front-seat spiral
The control respectively of paddle and heel row airscrewpiston, so that the efficiency of two propellers reaches highest, resulting pulling force is maximum,
Promote the stroke of aircraft.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of specific embodiment of the invention；
Wherein, 1- head shell, 2- screw I, 3- bow oar oil cylinder, 4- pulling sleeve, 5- piston, 6- bow oar paddle shell, 7- beta pipe
Paddle paddle shell, 14- after outer tube, 8- beta pipe inner tube, 9 engine driving torsional axis, 10- oil pipe, 11- support ring, 12- screw II, 13-
After cover board, 15- gasket, 16- paddle oil cylinder, 17- oil pipe greatly away from oil circuit hole, 18- fuse greatly away from oil circuit, 19- oil pipe away from
In restraint oil circuit hole, 20- fuse away from paddle adapter narrow spacing oil circuit after restraint oil circuit, 21-, 22- lubricating oil adapter narrow spacing oil circuit,
Away from restraint oil circuit, 25- bow oar adapter narrow spacing oil circuit, 26- bow oar adapter greatly away from oil in 23- paddle shaft, 24- bow oar adapter
After road, 27- screw III, 28- bow oar adapter, 29- lubricating oil adapter, 30- paddle adapter, 31- lubricating oil adapter greatly away from oil circuit,
Paddle adapter is greatly away from oil circuit, 33- cushion rubber, 34- connecting rod, 35- pin, 36- fuse narrow spacing oil circuit, 37- oil pipe narrow spacing oil after 32-
Lu Kong, 38- fuse, 39- pulling sleeve narrow spacing oil circuit hole, 101- oil circuit hole I, 102- oil circuit hole II, 103- oil circuit hole III, 104- oil circuit
Hole IV, 105- oil circuit hole V, 106- oil circuit hole VI, 107- oil circuit hole VII, 108- oil circuit hole VIII.
Specific embodiment
The following further describes the specific embodiments of the present invention with reference to the drawings.
Coaxial is torsion pass axis 9 and paddle shaft 23 respectively with two output shafts to forwarding motivation, and bow oar is pacified by bow oar paddle shaft
On rear paddle paddle shell 13.To realize that bow oar and rear paddle can distinguish displacement, two sets of pitch-changing mechanism schemes are used.
The displacement oil circuit connection situation of paddle and bow oar is shown in Tables 1 and 2 afterwards.
Paddle displacement oil circuit connection situation after table 1
2 bow oar displacement oil circuit connection situation of table
Blade angle change procedure
In order to adapt to engine power up-regulation or decline, the pitch needs of propeller are adjusted, and can be divided into pitch increasing
Big process and pitch reduce process.
Pitch increases process
Bow oar: the high pressure oil that propeller control system comes is by bow oar adapter 28 greatly away from oil circuit 26, IV 104 and of oil circuit hole
Oil circuit hole V 105 enters propeller C chamber through 8 internal oil passages hole I 101 of beta pipe inner tube；Propeller narrow spacing oil pocket D at this time
Lubricating oil, by the narrow spacing oil circuit hole 39 and oil circuit hole II 102 on pulling sleeve 4, the oil through being formed between beta pipe outer tube 7 and inner tube 8
Road enters the narrow spacing oil circuit 25 in bow oar adapter 28 by oil circuit hole III 103, returns to engine oil tank by control system.
Paddle afterwards: the high pressure oil that propeller control system comes is by big away from oil circuit 22 in lubricating oil adapter 29, after entering
Paddle adapter 30 is entered away from big in oil circuit 18 and oil pipe 10 away from oil circuit hole 17 greatly away from oil circuit 32 by big in fuse 38
Propeller is greatly away from oil pocket A；The lubricating oil in propeller narrow spacing oil pocket B is entered by the narrow spacing oil circuit hole 37 on oil pipe 10 at this time
To the narrow spacing oil circuit 36 in fuse 38, the narrow spacing oil circuit 21 after on paddle adapter 30 enters the narrow spacing in lubricating oil adapter 29
Oil circuit 31 returns to engine oil tank by control system (diagram does not indicate).
Pitch reduces process
Bow oar: the high pressure oil that propeller control system comes passes through 28 narrow spacing oil circuit 25 of bow oar adapter, oil circuit hole III 103,
Oil circuit through being formed between beta pipe outer tube 7 and inner tube 8 enters propeller D chamber；Lubricating oil of the propeller greatly away from oil pocket C at this time leads to
It crosses the oil circuit that oil circuit hole III 103 enters inside beta pipe inner tube 8 and enters bow oar through oil circuit hole V 105 and oil circuit hole IV 104
It is big away from oil circuit 26 in adapter 28, engine oil tank is returned to by control system.
Paddle afterwards: the high pressure oil that propeller control system comes is by the narrow spacing oil circuit 31 in lubricating oil adapter 29, after entering
30 narrow spacing oil circuit 21 of paddle adapter is entered by the narrow spacing oil circuit hole 37 in the narrow spacing oil circuit 36 and oil pipe 10 in fuse 38
Propeller narrow spacing oil pocket B；Propeller passes through away from the lubricating oil in oil pocket A greatly big away from oil circuit hole 17, entrance on oil pipe 10 at this time
It is big away from oil circuit 18 into fuse 38, after on paddle adapter 30 it is big away from oil circuit 32 enter in lubricating oil adapter 29 it is big away from
Oil circuit 22 returns to engine oil tank by control system (diagram does not indicate).
In away from restraint function realize process
For guarantee flight safety, do not allow airscrewpiston be more than a certain limits value, this process be in away from restraint mistake
Journey.It is as follows away from restraint process in bow oar and the realization of rear paddle:
Bow oar: propeller become smaller away from when, beta pipe outer tube 7 and inner tube 8 move axially together with piston 5, work as propeller
Become smaller away from when, when the oil circuit hole III 103 on beta pipe outer tube 7 is moved to the convex shoulder on rear paddle adapter 30, oil circuit hole III 103 is closed
It closes, the high pressure oil come from propeller control system cannot be introduced into narrow spacing oil pocket, therefore propeller can not continue to become smaller away from realization
In the purpose away from restraint.
Paddle afterwards: propeller become smaller away from when, oil cylinder 16 moves axially, and drives connecting rod 34 to carry out displacement, when cover board 14 is moved to
When the big hole 17 away from oil circuit on oil pipe 10, the lubricating oil away from oil pocket can not can only pass through cunning by oil circuit 18,32 and 22 oil returns greatly
In on oil pipe 10 away from restraint oil circuit hole 19 carry out oil return, and on fuse 38 in closed away from restraint oil circuit 20 by control system,
It can not continue back paddle, the purpose away from restraint in realization.
Claims (4)
1. a kind of pitch-changing mechanism of coaxial co-axial contra rotating propeller, it is characterized in that: the pitch-changing mechanism includes bow oar oil cylinder, piston, shellfish
Tower tube outer tube, beta pipe inner tube, oil pipe, rear paddle oil cylinder, rear paddle adapter, lubricating oil adapter, bow oar adapter；The piston
Bow oar oil cylinder is divided into greatly away from oil pocket C and narrow spacing oil pocket D；Rear paddle oil cylinder is divided into greatly away from oil pocket A and narrow spacing oil by the oil pipe
Chamber B；
Each propeller at least provides three oil circuits, be respectively greatly away from oil circuit, narrow spacing oil circuit and in away from restraint oil circuit, front and back two
Platform propeller is no less than six oil circuits, realizes bow oar and rear paddle the automatic adjustable-pitch function away from restraint in；At engine paddle shaft end
The oil circuit of lubricating oil adapter equipped with propeller, rear paddle enters directly into rear paddle by adapter, and the lubricating oil of rear paddle is transmitted by sliding
Oil pipe is realized；The lubricating oil of bow oar enters in bow oar adapter into lubricating oil adapter, engine driving torsional axis, and the oil circuit of bow oar is through passing
It turns round axis to enter in the axle sleeve inside torsion pass axis, the lubricating oil transmission of bow oar is realized by beta pipe outer tube and beta pipe inner tube；
In the lubricating oil adapter of rear paddle: big away from oil pocket and narrow spacing oil pocket phase with propeller respectively away from oil circuit and narrow spacing oil circuit greatly
Even；In away from restraint oil circuit be connected away from oil pocket greatly, but from be distributed on the different axial position of propeller oil pipe away from oil circuit greatly；
In bow oar adapter: being connected respectively with the big of propeller away from oil pocket and narrow spacing oil pocket away from oil circuit and narrow spacing oil circuit greatly；In
It is connected away from restraint oil circuit with narrow spacing oil pocket, but is distributed on the different axial position of beta pipe outer tube from narrow spacing oil circuit.
2. pitch-changing mechanism according to claim 1, it is characterized in that: the pitch-changing mechanism further includes pulling sleeve.
3. pitch-changing mechanism according to claim 1, it is characterized in that: the pitch-changing mechanism further includes lid.
4. pitch-changing mechanism according to claim 1, it is characterized in that: the pitch-changing mechanism further includes fuse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811518873.6A CN109823519B (en) | 2018-12-12 | 2018-12-12 | Pitch-changing mechanism of coaxial contra-rotating propeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811518873.6A CN109823519B (en) | 2018-12-12 | 2018-12-12 | Pitch-changing mechanism of coaxial contra-rotating propeller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109823519A true CN109823519A (en) | 2019-05-31 |
| CN109823519B CN109823519B (en) | 2024-06-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811518873.6A Active CN109823519B (en) | 2018-12-12 | 2018-12-12 | Pitch-changing mechanism of coaxial contra-rotating propeller |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1195328A (en) * | 1956-12-18 | 1959-11-17 | Rotol Ltd | Improvements to hydraulically controlled variable-pitch propellers |
| US5836743A (en) * | 1997-10-22 | 1998-11-17 | United Technologies Corporation | Variable pitch counterweighted propeller system with releasable hydraulic pitchlock |
| US20090180876A1 (en) * | 2008-01-11 | 2009-07-16 | Mt-Propeller Entwicklung Gmbh | Electrohydraulic propeller governor |
| EP2384968A2 (en) * | 2010-05-06 | 2011-11-09 | Rolls-Royce plc | Pitch Control Mechanism |
| CN104554708A (en) * | 2014-12-14 | 2015-04-29 | 惠阳航空螺旋桨有限责任公司 | Variable-pitch execution mechanism of electronic pitch varying device of screw propeller |
| CN204452924U (en) * | 2014-12-14 | 2015-07-08 | 惠阳航空螺旋桨有限责任公司 | A kind of displacement actuating unit of electronics variable pitch device of screw propeller |
| CN107044301A (en) * | 2016-12-13 | 2017-08-15 | 惠阳航空螺旋桨有限责任公司 | Locking device for propeller beta pipe |
-
2018
- 2018-12-12 CN CN201811518873.6A patent/CN109823519B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1195328A (en) * | 1956-12-18 | 1959-11-17 | Rotol Ltd | Improvements to hydraulically controlled variable-pitch propellers |
| US5836743A (en) * | 1997-10-22 | 1998-11-17 | United Technologies Corporation | Variable pitch counterweighted propeller system with releasable hydraulic pitchlock |
| US20090180876A1 (en) * | 2008-01-11 | 2009-07-16 | Mt-Propeller Entwicklung Gmbh | Electrohydraulic propeller governor |
| EP2384968A2 (en) * | 2010-05-06 | 2011-11-09 | Rolls-Royce plc | Pitch Control Mechanism |
| CN104554708A (en) * | 2014-12-14 | 2015-04-29 | 惠阳航空螺旋桨有限责任公司 | Variable-pitch execution mechanism of electronic pitch varying device of screw propeller |
| CN204452924U (en) * | 2014-12-14 | 2015-07-08 | 惠阳航空螺旋桨有限责任公司 | A kind of displacement actuating unit of electronics variable pitch device of screw propeller |
| CN107044301A (en) * | 2016-12-13 | 2017-08-15 | 惠阳航空螺旋桨有限责任公司 | Locking device for propeller beta pipe |
Non-Patent Citations (1)
| Title |
|---|
| 周欣荣;王勇;: "螺旋桨变距机构的设计", 装备制造技术, no. 07 * |
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| CN109823519B (en) | 2024-06-18 |
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