CN105599898A - Three-rotor-wing tail rotor hub of unmanned helicopter - Google Patents

Three-rotor-wing tail rotor hub of unmanned helicopter Download PDF

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Publication number
CN105599898A
CN105599898A CN201610108760.3A CN201610108760A CN105599898A CN 105599898 A CN105599898 A CN 105599898A CN 201610108760 A CN201610108760 A CN 201610108760A CN 105599898 A CN105599898 A CN 105599898A
Authority
CN
China
Prior art keywords
tail
rotor
rod
tailing axle
sliding sleeve
Prior art date
Application number
CN201610108760.3A
Other languages
Chinese (zh)
Inventor
王川
杨威
Original Assignee
天峋创新(北京)科技有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 天峋创新(北京)科技有限公司 filed Critical 天峋创新(北京)科技有限公司
Priority to CN201610108760.3A priority Critical patent/CN105599898A/en
Publication of CN105599898A publication Critical patent/CN105599898A/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B64AIRCRAFT; AVIATION; COSMONAUTICS
    • B64CAEROPLANES; HELICOPTERS
    • B64C27/00Rotorcraft; Rotors peculiar thereto
    • B64C27/04Helicopters
    • B64C27/12Rotor drives
    • B64C27/14Direct drive between power plant and rotor hub

Abstract

The invention discloses a three-rotor-wing tail rotor hub of an unmanned helicopter. The three-rotor-wing tail rotor hub comprises a tail shaft, a tail shaft seat, a tail shaft sleeve, a sliding sleeve, a crab claw, a crab claw connecting rod, rotor clamps, a bulb connecting rod, a tail shaft belt wheel, a tail rotor middle joint and a variable-pitch connecting rod. The tail shaft is assembled and fixed to the tail shaft seat through a flange bearing, the tail shaft belt wheel is arranged in the tail shaft seat, the tail rotor middle joint is fixed to the top end of the tail shaft, the tail rotor clamps are assembled on branches of the tail rotor middle joint, the crab claw connecting rod is fixed to rocker arms of the tail rotor clamps and connected with the crab claw, the crab claw is fixed to the tail shaft sleeve and the sliding sleeve in a matched mode, and the tail shaft sleeve and the sliding sleeve are fixedly assembled through two bearings. A steering engine rocker arm controls the variable-pitch connecting rod and drives the bulb connecting rod to move so as to drive the sliding sleeve, and finally a variable pitch of the tail rotor is achieved.

Description

A kind of three rotor tail-rotor hubs of depopulated helicopter
Technical field
The present invention relates to a kind of three rotors of aviation aircraft technical field, particularly a kind of depopulated helicopterTail-rotor hub.
Background technology
Depopulated helicopter is generally used for aviation target, battlefield investigation, injures the military affairs such as assessment, target guideTask, also can be used for the non-military task such as flight test, aerial mapping simultaneously. Compared with fixed wing aircraft,Depopulated helicopter has the functions such as hovering, VTOL, can execute the task more flexibly. Due to nothingThe rotor load of people's helicopter is limited, and therefore rotor quantity has very large to the flight efficiency of depopulated helicopterImpact.
Structure and the rotor similar (except No Tail Rotor technology) of helicopter tail rotor, be positioned on tail boom,For the parts of the balancing helicopter rotor moment of reaction, guarantee helicopter direction control and stability.Lifting airscrew can produce lift in rotary course, also can produce turning round perpendicular to Plane of rotation simultaneouslySquare, in order to ensure trim moment of torsion, need to increase tail-rotor provides reciprocal moment of torsion. Tail-rotor passes through simultaneouslyThe attitude that provides the moment of torsion of variable size can control helicopter body is also to ensure helicopter directional controlThe important component part of property and stability.
Because the power of tail-rotor is generally from the sustainer of helicopter, in the identical condition of dynamical systemUnder, increasing rotor quantity is to offset a method of helicopter moment of torsion, the development of this type of aircraft is at present alsoIn elementary developing stage, mostly general depopulated helicopter tail-rotor displacement is that the drive mechanism of the many parts of employing willThe steering force of steering wheel is delivered on displacement connecting rod, finally passes to tail-rotor again. It is straight that such design causesConnecing consequence is exactly its architecture quality increase, and too much drive joint can cause the reliability of transmission to be fallenLow. In the accident investigation of helicopter, the accident causing due to tail-rotor system has reached at helicopter fuselageIn the system failure 32%, wherein the accident rate of tail-rotor power transmission shaft is 18%, tail-rotor accident rate is 14%. CauseThis can find out that a set of reliable tail-rotor design is the key that ensures flight safety. The China of prior art is specialProfit application number: a kind of tail-rotor displacement structure of depopulated helicopter is disclosed in 201510151969.3,But bispin wing structure is still facing certain difficulty aspect the moment of torsion of the main oar of counteracting.
Therefore the three rotor tail-rotor hubs that, wish a kind of depopulated helicopter can overcome or at least alleviate existingThe above-mentioned defect of technology.
Summary of the invention
Technical problem to be solved by this invention is to overcome the defect existing in above-mentioned prior art, and carriesFor a kind of three rotor tail-rotor hubs of depopulated helicopter.
For solving the problems of the technologies described above, three rotor tail-rotor hubs of a kind of depopulated helicopter of the present invention, comprising:Tailing axle, tail shaft seat, screw shaft tube, sliding sleeve, crab pawl, crab pawl connecting rod, oar folder, ball head connecting rod, tailConnection and displacement connecting rod in shaft pulley, tail-rotor; Described tailing axle is by flange bearing and the assembling of described tail shaft seatFixing, be provided with described tail belt pulley in described tail shaft seat inside, described in fixing on the top of described tailing axleIn tail-rotor, join, in the branch joining, assemble described tail-rotor oar folder in described tail-rotor, press from both sides at described tail-rotor oarOn rocking arm, be fixed with described crab pawl connecting rod, described crab pawl connecting rod is connected with described crab pawl, described crabCrab claw matches respectively fixing with described screw shaft tube and sliding sleeve, described screw shaft tube and described sliding sleeve are by twoThe fixing assembling of bearing, steering wheel rocking arm is controlled described displacement connecting rod, and drives described ball head connecting rod fortuneMoving, thus drive described sliding sleeve, and finally make tail-rotor realize displacement.
Preferably, described tail shaft seat comprises that tailing axle is spacing, and described tailing axle is spacing to be arranged in described tail shaft seatSide, the spacing and described tailing axle belt pulley of described tailing axle is for limiting described tailing axle at described tail shaft seatPosition.
Preferably, described tailing axle top is fixed in described tail-rotor and is joined by jackscrew.
Preferably, the rocking arm of described tail-rotor oar folder is even fixing by hexagonal socket head cap screw and described crab pawl connecting rodConnect.
Preferably, in described tail-rotor, connection comprises three branches.
The invention provides a kind of three rotor tail-rotor hubs of depopulated helicopter, three rotors of described depopulated helicopterTail-rotor hub has following beneficial effect:
1) it is more reliable that three rotor tail-rotor hubs are more easily offset moment of torsion and the performance of main oar;
2) the positional distance tail-rotor rocking arm of steering wheel is nearer, makes like this transmission more simple and reliable;
3) design simplification of distance-variable rocker arm the part transmission of tail-rotor drive mechanism complexity in the past, utilize axleThe cross spacing of bearing is simplified the part displacement constraint that originally needs multiple parts to complete;
4) structural design of simplifying obtains the structural design at the tail-rotor structure place that accident rate is very high originallyTo optimize, alleviate the architecture quality of its tail-rotor part, and connection reliability is strengthened, be tail-rotorThe prioritization scheme of transmission.
Brief description of the drawings:
Fig. 1 is that the structure master of three rotor tail-rotor hubs of depopulated helicopter looks schematic diagram.
Fig. 2 is the structure schematic side view of three rotor tail-rotor hubs of depopulated helicopter.
Fig. 3 is the structure schematic top plan view of three rotor tail-rotor hubs of depopulated helicopter.
Fig. 4 is the structure elevational schematic view of three rotor tail-rotor hubs of depopulated helicopter.
Detailed description of the invention:
For making object of the invention process, technical scheme and advantage clearer, below in conjunction with the present inventionAccompanying drawing in embodiment, is further described in more detail the technical scheme in the embodiment of the present invention. AttachedIn figure, same or similar label represents same or similar element or has identical or similar from start to finishThe element of function. Described embodiment is the present invention's part embodiment, instead of whole embodiment.Be exemplary below by the embodiment being described with reference to the drawings, be intended to for explaining the present invention, and can notBe interpreted as limitation of the present invention. Based on the embodiment in the present invention, those of ordinary skill in the art are not havingHave and make the every other embodiment obtaining under creative work prerequisite, all belong to the model of the present invention's protectionEnclose. Below in conjunction with accompanying drawing, embodiments of the invention are elaborated.
In description of the invention, it will be appreciated that term " " center ", " longitudinally ", " horizontal strokeTo ", 'fornt', 'back', " left side ", " right side ", " vertically ", " level ",Orientation or the position relationship of the instruction such as " top ", " end " " interior ", " outward " are based on shown in accompanying drawingOrientation or position relationship, be only the present invention for convenience of description and simplified characterization, instead of instruction orThe device of hint indication or element must have specific orientation, construct and operation with specific orientation,Therefore can not be interpreted as limiting the scope of the invention
According to the present invention, three rotor tail-rotor hubs of the depopulated helicopter of one wide in range embodiment comprise: tailing axle, tailAxle bed, screw shaft tube, sliding sleeve, crab pawl, crab pawl connecting rod, oar folder, ball head connecting rod, tailing axle belt pulley,Connection and displacement connecting rod in tail-rotor; Described tailing axle is mounted with by flange bearing and described tail shaft seat, in instituteState tail shaft seat inside and be provided with described tail belt pulley, in the fixing described tail-rotor in the top of described tailing axle, join,In the branch joining, assemble described tail-rotor oar folder in described tail-rotor, fixing on the rocking arm of described tail-rotor oar folderHave described crab pawl connecting rod, described crab pawl connecting rod is connected with described crab pawl, described crab pawl respectively withDescribed screw shaft tube and sliding sleeve match fixing, and described screw shaft tube and described sliding sleeve are by the fixing dress of two bearingsJoin, steering wheel rocking arm is controlled described displacement connecting rod, and drives described ball head connecting rod motion, thus bandMoving described sliding sleeve, and finally make tail-rotor realize displacement.
As Figure 1-4, three rotor tail-rotor hubs of depopulated helicopter comprise: tailing axle 1, screw shaft tube 2,Sliding sleeve 3, crab pawl 4, crab pawl connecting rod 5, oar folder 6, ball head connecting rod 7, tail shaft seat 8, tailing axle limitIn position 9, tailing axle belt pulley 10, tail-rotor, join 11, hexagonal socket head cap screw 12, flange bearing 13, displacement connecting rod14。
On tailing axle 1, be mounted with by flange bearing 13 and tail shaft seat 8, fixing in the middle of tail shaft seat 8Have tailing axle belt pulley 10, the position of tailing axle 1 fixes limit by tailing axle spacing 9 and tailing axle belt pulley 10Position, on tailing axle top, is fixed in tail-rotor and is joined 11 by jackscrew, in the branch joining in each tail-rotor, pointBe not equipped with a tail-rotor oar folder 6, on oar folder rocking arm, throw screw by cup and be fixed with crab pawl connecting rod 5,Connecting rod 5 is connected with crab pawl 4, and crab pawl matches fixing with screw shaft tube 2 and sliding sleeve 3, screw shaft tube 2By the fixing assembling of two bearings, the control by steering wheel rocking arm to displacement connecting rod 14, comes with sliding sleeve 3Drive ball head connecting rod 7 to move, thereby drive sliding sleeve 3, and finally make tail-rotor realize displacement.
In small-sized depopulated helicopter design, apply above-mentioned technology, make the tail-rotor knot in this aircraftStructure is than greatly simplify in the past, and in manufacturing process, installation process can shorten, and easier group of matching relationshipDress. Aspect full machine, this design alleviates tail-rotor architecture quality, and trim center of gravity is simpler. MakeWith in the process of safeguarding, it is more convenient that such design maintenance gets up, and the place that need to smear lubricating grease is brightAobvious minimizing, transmission optimized, reliability strengthens.
Above embodiments of the invention are had been described in detail, but described content is only of the present invention betterEmbodiment, can not be considered to for limiting practical range of the present invention. Allly do according to the present patent application scopeEqualization change with improve etc., within all should still belonging to patent covering scope of the present invention.

Claims (5)

1. three rotor tail-rotor hubs of depopulated helicopter, is characterized in that, comprising: tailing axle, tailing axleSeat, screw shaft tube, sliding sleeve, crab pawl, crab pawl connecting rod, oar folder, ball head connecting rod, tailing axle belt pulley,Connection and displacement connecting rod in tail-rotor; Described tailing axle is mounted with by flange bearing and described tail shaft seat, in instituteState tail shaft seat inside and be provided with described tail belt pulley, in the fixing described tail-rotor in the top of described tailing axle, join,In the branch joining, assemble described tail-rotor oar folder in described tail-rotor, fixing on the rocking arm of described tail-rotor oar folderHave described crab pawl connecting rod, described crab pawl connecting rod is connected with described crab pawl, described crab pawl respectively withDescribed screw shaft tube and sliding sleeve match fixing, and described screw shaft tube and described sliding sleeve are by the fixing dress of two bearingsJoin, steering wheel rocking arm is controlled described displacement connecting rod, and drives described ball head connecting rod motion, thus bandMoving described sliding sleeve, and finally make tail-rotor realize displacement.
2. according to three rotor tail-rotor hubs of the depopulated helicopter described in claim 1, its feature existsIn: described tail shaft seat comprises that tailing axle is spacing, spacing described tail shaft seat inner side, the institute of being arranged on of described tailing axleState the spacing and described tailing axle belt pulley of tailing axle for limiting the position of described tailing axle at described tail shaft seat.
3. according to three rotor tail-rotor hubs of the depopulated helicopter described in claim 1, its feature existsIn: described tailing axle top is fixed in described tail-rotor and is joined by jackscrew.
4. according to three rotor tail-rotor hubs of the depopulated helicopter described in claim 1, its feature existsIn: the rocking arm of described tail-rotor oar folder is fixedly connected with described crab pawl connecting rod by hexagonal socket head cap screw.
5. according to three rotor tail-rotor hubs of the depopulated helicopter described in claim 1, its feature existsIn: in described tail-rotor, connection comprises three branches.
CN201610108760.3A 2016-02-26 2016-02-26 Three-rotor-wing tail rotor hub of unmanned helicopter CN105599898A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018095042A1 (en) * 2016-11-25 2018-05-31 深圳光启空间技术有限公司 Variable blade pitch transmission mechanism
CN109835479A (en) * 2019-03-27 2019-06-04 中国航发湖南动力机械研究所 Paddle shaft and the integrated tail-rotor axis of propeller hub

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5597138A (en) * 1991-09-30 1997-01-28 Arlton; Paul E. Yaw control and stabilization system for helicopters
CN102658865A (en) * 2012-05-17 2012-09-12 李游 Coaxial drive and control structure for coaxial contrarotation rotor helicopter
CN204264453U (en) * 2014-10-20 2015-04-15 深圳华越力合科技有限公司 A kind of Drawing-Core tail-rotor hub distance changing mechanism of agricultural depopulated helicopter
US20150118049A1 (en) * 2013-10-31 2015-04-30 Charley Lee Stephens Flybarless helicopter rotor head system
CN104843183A (en) * 2015-04-01 2015-08-19 天峋创新(北京)科技有限公司 Tail rotor pitch structure of unmanned helicopter
CN205524970U (en) * 2016-02-26 2016-08-31 天峋创新(北京)科技有限公司 Three rotor tail -rotor hubs of unmanned helicopter

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5597138A (en) * 1991-09-30 1997-01-28 Arlton; Paul E. Yaw control and stabilization system for helicopters
CN102658865A (en) * 2012-05-17 2012-09-12 李游 Coaxial drive and control structure for coaxial contrarotation rotor helicopter
US20150118049A1 (en) * 2013-10-31 2015-04-30 Charley Lee Stephens Flybarless helicopter rotor head system
CN204264453U (en) * 2014-10-20 2015-04-15 深圳华越力合科技有限公司 A kind of Drawing-Core tail-rotor hub distance changing mechanism of agricultural depopulated helicopter
CN104843183A (en) * 2015-04-01 2015-08-19 天峋创新(北京)科技有限公司 Tail rotor pitch structure of unmanned helicopter
CN205524970U (en) * 2016-02-26 2016-08-31 天峋创新(北京)科技有限公司 Three rotor tail -rotor hubs of unmanned helicopter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018095042A1 (en) * 2016-11-25 2018-05-31 深圳光启空间技术有限公司 Variable blade pitch transmission mechanism
CN109835479A (en) * 2019-03-27 2019-06-04 中国航发湖南动力机械研究所 Paddle shaft and the integrated tail-rotor axis of propeller hub

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Application publication date: 20160525