CN104691746B - A kind of big span lightweight unmanned plane single-wheel telescopic landing gear structure - Google Patents

A kind of big span lightweight unmanned plane single-wheel telescopic landing gear structure Download PDF

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Publication number
CN104691746B
CN104691746B CN201410745482.3A CN201410745482A CN104691746B CN 104691746 B CN104691746 B CN 104691746B CN 201410745482 A CN201410745482 A CN 201410745482A CN 104691746 B CN104691746 B CN 104691746B
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China
Prior art keywords
wheel
liner
pillar
undercarriage
gear
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CN104691746A (en
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王军
李光亮
吴超
辛树鹏
姬鹏博
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China Academy of Aerospace Aerodynamics CAAA
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China Academy of Aerospace Aerodynamics CAAA
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Abstract

The invention discloses a kind of big span lightweight unmanned plane single-wheel telescopic landing gear structure, including undercarriage top, gear down and wheel assemblies;Undercarriage top includes pillar, branch sleeve, automatic centering and bracing wire sleeve, adpting flange, connection liner and top liner, described pillar is full composite material thin-wall circular tube structure, column upper section is through the adpting flange being connected with fuselage of hollow, connect liner to be placed on adpting flange inwall, top liner is placed on the top of pillar, utilizes and the moment of flexure suffered by undercarriage is delivered on fuselage at connection liner and top liner two.The present invention uses the two point form of thin-wall flange formula and top liner to be attached with fuselage, and the pillar of design is standard room with wheel connector and is connected, the convenient degree that these designs substantially increase landing gear structure dismounting, keep in repair and transport.

Description

A kind of big span lightweight unmanned plane single-wheel telescopic landing gear structure
Technical field
The present invention relates to a kind of big span lightweight unmanned plane single-wheel telescopic landing gear structure, Belong to unmanned air vehicle technique field.
Background technology
Landing gear structure many employings all-metal material of unmanned plane at present, is connected by auricle formula even with body Connect, and be designed with special buffer and turning equipment to ensure other structures of aircraft and the safety of equipment, But owing to big span lightweight unmanned plane subsidence velocity is little, it is low to transship, construction weight is required extremely harsh, The most traditional material and design can not meet the actual requirement of such aircraft, and existing undercarriage knot Structure weight is big, manufacturing cost is high, it is complex to install repairing.
Summary of the invention
The technical problem to be solved is: for overcoming prior art not enough, it is provided that a kind of big span Lightweight unmanned plane single-wheel telescopic landing gear structure, with meet with low cost, lightweight, reliability is high, Working service requirement easily.
The technical solution of the present invention is: a kind of big span lightweight unmanned plane single-wheel telescopic landing gear knot Structure, including undercarriage top, gear down and wheel assemblies;
Undercarriage top includes pillar, branch sleeve, automatic centering and bracing wire sleeve, adpting flange, company Connecing liner and top liner, described pillar is full composite material thin-wall circular tube structure, during column upper section passes The empty adpting flange being connected with fuselage, connects liner and is placed on adpting flange inwall, and top liner is placed on The top of pillar, utilizes, at connection liner and top liner two, the moment of flexure suffered by undercarriage is delivered to fuselage On;It is provided with the branch sleeve being connected with gear down inside lower rod end, is provided with outside lower rod end Automatic centering and bracing wire sleeve, the connection of bracing wire upper cartridge tapping has can improve undercarriage lateral rigidity The bracing wire being connected with wing, bottom tapping connects one end of little spring;
Gear down connects by being connected tumbler with undercarriage top;Wheel assemblies and part bottom of rising and falling It is connected to drive whole undercarriage to move.
Gear down includes connecting plate, plastic spacer and wheel fork, and plastic spacer is placed in wheel fork and connecting plate Between, complete the rotation of wheel and reduce coefficient of friction, connecting tumbler and be located on connecting plate.
Wheel assemblies includes deep groove ball bearing, wheel hub and wheel shaft, the wheel shaft being wherein connected with wheel fork two ends Two ends are provided with endoporus, and wheel shaft liner embeds in endoporus, in automatic centering connector is accessed by wheel shaft liner Kong Zhong, is fixed by slotted nut, and automatic centering connector connects the other end of little spring;Zanjon Ball bearing is installed in wheel hub, and wheel shaft is placed on deep groove ball bearing.
Wheel fork side is for turning over all over structure.
In addition to tire, all landing gear structure parts all use thin-wall construction.
Present invention advantage compared with prior art is:
(1) present invention uses thin-walled composite pillar as the main force support structure of undercarriage, and other are golden Belong to part and be also adopted by thin-wall construction, and the rotating function of undercarriage is replaced traditional all kinds of axles by plastic spacer Holding, these designs all greatly reduce construction weight.
(2) present invention uses thin-wall flange formula and the two point form of top liner according to the loading characteristic of self Being attached with fuselage, and the pillar of design is standard room with wheel connector and is connected, these designs are big The convenient degree improve greatly landing gear structure dismounting, keeping in repair and transporting.
(3) present invention is designed with High-strength cable in undercarriage both sides, and this design can be greatly improved and rise and fall The lateral rigidity of frame, and automatic centering and bracing wire sleeve part have connecting stay wire simultaneously and automatic centering is little The effect of spring.
(4) present invention utilizes weight spring extremely light, that pulling force is less to complete automatic centering function, in case Only during unmanned plane airflight, aerodynamic loading makes wheel secundly, causes calamitous landing.
Accompanying drawing explanation
Fig. 1 is present configuration schematic diagram;
Fig. 2 is undercarriage upper mechanism schematic diagram;
Fig. 3 is gear down and wheel assemblies connection diagram;
Fig. 4 is wheel fork structural representation;
Fig. 5 is plastic spacer structural representation;
Fig. 6 is branch sleeve structural representation;
Fig. 7 is automatic centering and bracing wire tube-in-tube structure schematic diagram;
Fig. 8 is connecting board structure schematic diagram;
Fig. 9 is for connecting tumbler structural representation;
Figure 10 is connecting flange structure schematic diagram;
Figure 11 is for connecting inner lining structure schematic diagram;
Figure 12 is top inner lining structure schematic diagram.
Detailed description of the invention
The present invention is described in detail below in conjunction with the accompanying drawings.
A kind of big span lightweight unmanned plane single-wheel telescopic landing gear structure, including undercarriage top, rises and falls Frame bottom and wheel assemblies;
Undercarriage top includes pillar 1, branch sleeve 2, automatic centering and bracing wire sleeve 15, adpting flange 16, connecting liner 17 and top liner 18, described pillar 1 is full composite material thin-wall circular tube structure, Post 1 top, through the adpting flange 16 being connected with fuselage of hollow, connects liner 17 and is placed in adpting flange 16 On inwall, top liner 18 is placed on the top of pillar 1, utilizes and connects at liner 17 and top liner 18 liang Moment of flexure suffered by undercarriage is delivered on fuselage;It is provided with inside pillar 1 lower end and is connected with gear down Branch sleeve 2, be provided with automatic centering and bracing wire sleeve 15, bracing wire sleeve 15 top outside pillar 1 lower end Tapping connects the bracing wire 21 being connected with wing that can improve undercarriage lateral rigidity, and bottom tapping connects One end of little spring 14;
Gear down connects by being connected tumbler 4 with undercarriage top;Wheel assemblies and part bottom of rising and falling It is connected to drive whole undercarriage to move.
Gear down includes connecting plate 3, plastic spacer 5 and wheel fork 6, and plastic spacer is placed in wheel fork 6 and connects Between fishplate bar 3, complete the rotation of wheel and reduce coefficient of friction, connecting tumbler 4 and be located on connecting plate 3.
Wheel assemblies includes deep groove ball bearing 12, wheel hub 13 and wheel shaft 7, is wherein connected with wheel fork 6 two ends The two ends of wheel shaft 7 are provided with endoporus, and wheel shaft liner 20 embeds in endoporus, and automatic centering connector 11 is by wheel Axle liner 20 accesses in endoporus, is fixed by slotted nut 10, and automatic centering connector 11 connects little The other end of spring 14;Deep groove ball bearing 12 is installed in wheel hub 13, and wheel shaft 7 is placed in deep groove ball bearing On 12.
Carry out turning over all over design at wheel fork 6 side to improve the rigidity of wheel fork 6.
In addition to tire, all landing gear structure parts all use thin-wall construction.
Specific works mode of the present invention is as follows:
Undercarriage realize on airport after installing internal field transfer, ground roll-out, take off, the task such as landing time, take turns Tire lands, and is realized the smooth rolling of wheel by deep groove ball bearing 12;And the turning process of unmanned plane is by wheel fork 6, connecting tumbler 4 and plastic spacer 5 completes, plastic spacer 5 can play reduction wheel fork and be connected tumbler Between the effect of coefficient of friction;The little spring 14 during unmanned plane during flying with certain pretension can prevent gas But dynamic loading makes wheel deflect makes undercarriage self complete automatic centering function, to ensure that unmanned plane is not Drift off the runway safe falling;The load that the main force support structure of undercarriage is born by composite pillar is by wheel Be delivered to wheel shaft 7, then be delivered to wheel fork 6 by wheel shaft 7, then be delivered to connect assembly by wheel fork 6, finally by Adpting flange 16 and top liner 18 on pillar are delivered to fuselage.
The present invention is not disclosed technology and belongs to general knowledge as well known to those skilled in the art.

Claims (4)

1. a big span lightweight unmanned plane single-wheel telescopic landing gear structure, it is characterised in that included Fall frame top, gear down and wheel assemblies;
Undercarriage top includes pillar (1), branch sleeve (2), automatic centering and bracing wire sleeve (15), connects Acting flange (16), connection liner (17) and top liner (18), described pillar (1) is full composite material Thin-wall circular tube structure, pillar (1) top, through the adpting flange (16) being connected with fuselage of hollow, connects Liner (17) is placed on adpting flange (16) inwall, and top liner (18) is placed on the top of pillar (1), Utilize connect at liner (17) and top liner (18) two moment of flexure suffered by undercarriage is delivered to fuselage it On;The branch sleeve (2) being connected with gear down it is provided with, under pillar (1) inside pillar (1) lower end End is outside is provided with automatic centering and bracing wire sleeve (15), automatic centering and bracing wire sleeve (15) top tapping Connecting and have the bracing wire (21) being connected with wing that can improve undercarriage lateral rigidity, bottom tapping connects little bullet One end of spring (14);
Gear down connects by being connected tumbler (4) with undercarriage top;Wheel assemblies with rise and fall under part Portion is connected to drive whole undercarriage to move.
2. a kind of big span lightweight unmanned plane single-wheel telescopic landing gear structure as claimed in claim 1, It is characterized in that, gear down includes connecting plate (3), plastic spacer (5) and wheel fork (6), plastic mattress Sheet is placed between wheel fork (6) and connecting plate (3), completes the rotation of wheel and reduces coefficient of friction, connecting Tumbler (4) is located on connecting plate (3).
3. a kind of big span lightweight unmanned plane single-wheel telescopic landing gear structure as claimed in claim 2, It is characterized in that, wheel assemblies includes deep groove ball bearing (12), wheel hub (13) and wheel shaft (7), Qi Zhongyu The two ends of the wheel shaft (7) that wheel fork (6) two ends connect are provided with endoporus, and wheel shaft liner (20) embeds in endoporus, Automatic centering connector (11) accesses in endoporus by wheel shaft liner (20), by slotted nut (10) Being fixed, automatic centering connector (11) connects the other end of little spring (14);Deep groove ball bearing (12) Being installed in wheel hub (13), wheel shaft (7) is placed on deep groove ball bearing (12).
4. a kind of big span lightweight unmanned plane single-wheel telescopic landing gear structure as claimed in claim 3, It is characterized in that, wheel fork (6) side is turnup structure.
CN201410745482.3A 2014-12-08 2014-12-08 A kind of big span lightweight unmanned plane single-wheel telescopic landing gear structure Active CN104691746B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410745482.3A CN104691746B (en) 2014-12-08 2014-12-08 A kind of big span lightweight unmanned plane single-wheel telescopic landing gear structure

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Application Number Priority Date Filing Date Title
CN201410745482.3A CN104691746B (en) 2014-12-08 2014-12-08 A kind of big span lightweight unmanned plane single-wheel telescopic landing gear structure

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CN104691746B true CN104691746B (en) 2016-08-17

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105059532B (en) * 2015-07-16 2017-11-28 湖南省金峰机械科技有限公司 A kind of unmanned plane undercarriage
CN205440853U (en) * 2015-12-24 2016-08-10 广州亿航智能技术有限公司 Unmanned aerial vehicle
CN112776979B (en) * 2021-04-02 2021-08-10 中国航天空气动力技术研究院 Detachable auxiliary support structure and method for solar unmanned aerial vehicle

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Publication number Priority date Publication date Assignee Title
GB398411A (en) * 1932-04-26 1933-09-14 Dornier Metallbauten Gmbh Retractable landing gear for aircraft
GB673252A (en) * 1950-04-18 1952-06-04 John Harlin Geisse Improvements relating to aircraft undercarriages
FR2482042B1 (en) * 1980-05-07 1984-01-13 Aerospatiale
US7228945B2 (en) * 2005-03-16 2007-06-12 Hr Textron, Inc. Techniques for employing electric brakes to control movement of rotatable components

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