CN208412108U - A kind of unmanned helicopter buffer-type undercarriage - Google Patents

Abstract

What is involved is a kind of helicopter sled undercarriages to improve with buffer-type undercarriage for a kind of unmanned helicopter of the utility model, belongs to helicopter design and manufacturing technology field, specifically a kind of unmanned helicopter buffer-type sled undercarriage and its layout type.Buffer-type sled undercarriage layout type is symmetrical at left and right sides of the vertical plane of helicopter center, and one-sided configuration includes anti-jamming joint assembly, buffer and bracket piping；Unilateral anti-jamming joint assembly is provided with two pieces, and anti-jamming joint assembly is made of side lid, cylinder roller bearing, thrust bearing pair and T connector；T connector both ends are respectively arranged with cylinder roller bearing mounting base and thrust bearing Submount；The buffer includes plain radial bearing, piston cylinder, combined seal ring, piston stopper, piston, piston ring, cylinder, cylinder barrel, bushing and spindle；Bracket piping includes elbow one, elbow two, sled bend pipe, Anti-skid sheet, back brace pipe fitting, seat stay.

Description

A kind of unmanned helicopter buffer-type undercarriage

Technical field

What is involved is a kind of helicopter sled undercarriages with buffer-type undercarriage for a kind of unmanned helicopter of the utility model It improves, belongs to helicopter design and manufacturing technology field, specifically a kind of unmanned helicopter buffer-type sled undercarriage And its layout type.

Background technique

Other than assisting unmanned helicopter to be taken off, landed and ground is parked, another major function of undercarriage is Part or all of impact kinetic energy caused by dissipation unmanned helicopter after landing.

For general rigid sled undercarriage, landing shock kinetic energy relies primarily on next gram of flexible deformation of structure Clothes easily lead to high overload coefficient and even generate " ground resonance " phenomenon, the environment so modern helicopters undercarriage especially lands More severe helicopter landing gear usually installs buffer additional.

For the sled undercarriage with buffer unit, the portion of energy by act on ground force of sliding friction, It falls frame and its deformation divided with Fuselage connection and buffer absorbs jointly, wherein buffer plays a leading role.

In the prior art, buffer-type sled undercarriage application has become ubiquitous, and dominant form has buffer external at present Type undercarriage and buffer internally-arranged type undercarriage.

Buffer externally positioned type undercarriage represents form as S300C type helicopter.The form undercarriage is completely disposed at outside body Side is the system of an autonomous working, docks although can be realized with the installation of most of unmanned helicopters, its aerodynamic drag Big disadvantage is also very prominent, and especially obvious especially under marine environment and altitude environment, this point greatly reduces helicopter Flight efficiency, and the undercarriage form is unsightly.

Buffer internally-arranged type undercarriage, representing type is MD500 series helicopter.The buffer of the form undercarriage and Primary deformable mechanism is all placed in internal body, and only sled bracket and sled pipe is exposed in engine body exterior, and gas greatly reduces Dynamic resistance, still, it is contemplated that the comfort requirement that unloading preshoot landing load and pilot take, by bulkhead to retrodeviating when design Turn certain angle, therefore there is angle in face where buffer load and bulkhead, causes that bulkhead stress is larger, service life reduction.

Summary of the invention

The shortcomings that the purpose of this utility model is for the above existing undercarriage form and topology layout, provide it is a kind of nobody Helicopter buffer-type undercarriage is a kind of unmanned helicopter buffer-type sled undercarriage of new, high cushion performance, is protecting It stays the advantages that convention buffer internally-arranged type undercarriage is light-weight, structure is simple, good appearance, small aerodynamic drag simultaneously, improves Buffer and fuselage bulkhead connection type have cancelled front and back tie-strut, have replaced with anti-jamming joint assembly, improve helicopter Landing stability and comfort.

A kind of unmanned helicopter of the utility model is to take technical solution below with buffer-type undercarriage:

A kind of unmanned helicopter buffer-type undercarriage, buffer-type sled undercarriage layout type is along helicopter center vertical plane The left and right sides is symmetrical, and one-sided configuration includes anti-jamming joint assembly, buffer and bracket piping.

Unilateral anti-jamming joint assembly is provided with two pieces, around same axial-movement.Anti-jamming joint assembly is entirely to buffer The organ of formula undercarriage, anti-jamming joint assembly is by side lid, cylinder roller bearing, thrust bearing pair and T connector group At.T connector both ends are respectively arranged with cylinder roller bearing mounting base and thrust bearing Submount, to assemble cylindrical roller Bearing and thrust bearing pair, T connector both ends outside are equipped with side lid, can also be to cylindrical roller in addition to fixed T connector function Bearing and thrust bearing pair are limited, and above-mentioned side lid and T connector are locked by screw.

The anti-jamming joint assembly in the left and right sides is connected by customization screw, nut with body hold-down support, the fixed branch of body There are symmetrical holes on seat, the symmetrical holes are to the anti-jamming joint assembly of fixation.When unmanned helicopter after landing, unilateral undercarriage around Forward and backward anti-jamming connector axis rotation, and then support piping is driven to expand outwardly simultaneously compression buffer, it is dynamic to realize that consumption is landed The effect for overload of landing can, be reduced, meanwhile, before the linkage bearing of cylinder roller bearing and thrust bearing pair composition can be eliminated Unbalanced moments caused by flying, landing, prevents and treats stuck phenomenon.

Buffer is the major function mechanism of buffer-type undercarriage, relies primarily on the reciprocal via hole movement consumption of its internal oil Landing shock energy is dissipated, to achieve the purpose that reduce overload of landing, and then ensures each component operational safety of body.The buffering Device includes plain radial bearing, piston cylinder, combined seal ring, piston stopper, piston, piston ring, cylinder, cylinder barrel, bushing, oil Needle.Piston cylinder one end is equipped with plain radial bearing, is connected for the body hold-down support with unmanned helicopter, piston cylinder is another End is equipped with piston, and piston ring is housed on piston, and piston is mounted in cylinder, and cylinder top is equipped with piston stopper, for controlling work Fill in stroke.Cylinder and piston cylinder are provided with oil liquid and air.Combined seal ring is housed between cylinder lower part and piston cylinder, prevents oil Liquid and air leakage.Piston is equipped with spindle mounting hole, and spindle is housed.Cylinder lower part is set with cylinder barrel, between cylinder barrel and cylinder Equipped with combined seal ring, prevent oil liquid and air from leaking.Cylinder barrel lower part is provided with connection prong, and connection prong two sides are provided with pivot pin Hole is equipped with bushing in pin hole.Buffer is connected by connection prong, pin hole, pivot pin with the elbow of bracket piping.

Sign board is provided with outside cylinder, for indicating buffer compensator or trimmer pressure etc..When buffer compression, internal gas Air cavity compresses air cavity since oil liquid is flowed by spindle in cylinder, forms air spring, is ensureing the buffer undercarriage just Often land to avoid impact.

Bracket piping is the supporting mechanism of buffer-type undercarriage, bracket piping include elbow one, elbow two, sled bend pipe, Anti-skid sheet, back brace pipe fitting, seat stay and pedal, one upper end of elbow is fixedly connected with the T connector of anti-jamming joint assembly, curved First lower end is fixedly connected with sled bend pipe upper end, and two upper end of elbow is fixedly connected with the T connector of anti-jamming joint assembly, curved First two lower end is fixedly connected with seat stay upper end, and seat stay lower end is fixedly connected by back brace pipe fitting with sled bend pipe lower end. In the same plane, no relative motion, entire bracket piping is that rigidity is for sled bend pipe and seat stay in bracket piping System crashes unless meeting with, otherwise bracket piping recoverable deformation invariably.

Buffer installation lifting lug is provided on the elbow one, elbow two, for installing buffer.

A kind of unmanned helicopter buffer-type undercarriage the utility model has the advantages that

A kind of unmanned helicopter buffer-type undercarriage uses skid landing gear structure, and design is rationally, compact-sized, no Address only buffer externally positioned type undercarriage flight aerodynamic drag is big, shape unsightly the defects of, also solve convention buffer The unique model of internally-arranged type undercarriage bulkhead stress is larger, the service life is low deficiency or even bracket piping can also be avoided to going straight up to Machine task gondola blocks, and expands the scope of reconnaissance of the devices such as photoelectric nacelle and radar, especially scouts use to unmanned helicopter Unmanned helicopter is of great significance.

A kind of unmanned helicopter buffer-type undercarriage is a kind of unmanned helicopter buffering of new, high cushion performance Formula sled undercarriage, convention buffer internally-arranged type undercarriage is light-weight, structure is simple, good appearance, aerodynamic drag are small retaining The advantages that simultaneously, improve buffer and fuselage bulkhead connection type, cancelled front and back tie-strut, replace with anti-jamming connector Component improves helicopter landing stability and comfort.At left and right sides of unmanned helicopter buffer-type sled undercarriage Using anti-jamming joint assembly, buffer is housed, whole landing energies of unmanned helicopter will be produced all by buffer and sled Raw frictional force dissipates, and therefore, greatly reduces landing shock load, avoids big landing overload and causes to hurt to airborne equipment Evil.

Detailed description of the invention

Below with reference to attached drawing, the utility model is described in further detail:

Fig. 1 is a kind of structural schematic diagram of unmanned helicopter buffer-type undercarriage of the utility model；Wherein 1, anti-jamming Joint assembly, 2, buffer, 3, bracket piping, 4, body hold-down support.

Fig. 2 is a kind of anti-jamming connector schematic diagram of unmanned helicopter buffer-type undercarriage of the utility model；1-1, side Lid, 1-2, cylinder roller bearing, 1-3, thrust bearing pair, 1-4, T connector.

Fig. 3 is the anti-jamming connector in the left and right sides and fuselage of a kind of unmanned helicopter buffer-type undercarriage of the utility model The type of attachment of hold-down support.

Fig. 4 be a kind of buffer structure schematic diagram of unmanned helicopter buffer-type undercarriage of the utility model: 2-1, to Heart oscillating bearing, 2-2, piston cylinder, 2-3, combined seal ring, 2-4, piston stopper, 2-5, piston, 2-6, cylinder barrel, 2-7, bushing, 2-8, customization spindle, 2-9, sign board, 2-10, piston ring, 2-11, cylinder, 2-12, connection prong, 2-13, pin hole.

Fig. 5 is that a kind of bracket piping of unmanned helicopter buffer-type undercarriage of the utility model forms, 3-1 in figure, curved It is first, 3-2, sled bend pipe, 3-3, Anti-skid sheet, 3-4, back brace pipe fitting, 3-5, seat stay, 3-6, pedal, 3-7, elbow 2.

Fig. 6 is a kind of schematic diagram of unmanned helicopter buffer-type undercarriage of the utility model, and wherein A1, A2, B1, B2 are Undercarriage and fuselage tie point.When work, whole system is rotated around A1-B1, and then compression buffer A2-A3 and B2-B3, is made C1-C2 is obtained to expand outwardly.Buffer A2-A3 and B2-B3 move back and forth the enough energy of dissipating and enable unmanned helicopter Grease it in.

Specific embodiment

Referring to attached drawing 1-6, a kind of unmanned helicopter buffer-type undercarriage, buffer-type sled undercarriage layout type is along straight It rises at left and right sides of the vertical plane of machine center symmetrically, one-sided configuration includes anti-jamming joint assembly (1), buffer (2) and bracket piping (3).

Unilateral anti-jamming joint assembly (1) is provided with two pieces, around same axial-movement.Anti-jamming joint assembly (1) is whole The organ of a buffer-type undercarriage, anti-jamming joint assembly (1) is by side lid (1-1), cylinder roller bearing (1-2), thrust Bearing pair (1-3) and T connector (1-4) composition.The both ends T connector (1-4) are respectively arranged with cylinder roller bearing (1-2) peace Seat and secondary (1-3) mounting base of thrust bearing are filled, secondary (1-3) to assemble cylinder roller bearing (1-2) and thrust bearing, T-type connects Head is equipped with side lid (1-1) on the outside of the both ends (1-4), can also be to cylinder roller bearing (1- in addition to fixed T connector (1-4) function 2) it is limited with thrust bearing secondary (1-3), above-mentioned side lid (1-1) and T connector (1-4) are locked by screw.

The anti-jamming joint assembly in the left and right sides (1) is connected by screw, nut with body hold-down support (4), and body is fixed Support has symmetrical holes on (4), and the hole is to the anti-jamming joint assembly of fixation (1).When unmanned helicopter after landing, unilateral undercarriage It is rotated around forward and backward anti-jamming connector (1) axis, and then support piping (3) is driven to expand outwardly simultaneously compression buffer (2), realized The effect for consuming landing kinetic energy, reducing overload of landing, meanwhile, cylinder roller bearing (1-2) and thrust bearing secondary (1-3) composition Unbalanced moments caused by linkage bearing flies before capable of eliminating, lands, prevents and treats stuck phenomenon.

Buffer (2) is the major function mechanism of buffer-type undercarriage, relies primarily on the reciprocal via hole fortune of its internal oil Dynamic dissipation landing shock energy to achieve the purpose that reduce overload of landing, and then ensures each component operational safety of body.Described Buffer (2) includes plain radial bearing (2-1), piston cylinder (2-2), combined seal ring (2-3), piston stopper (2-4), piston (2-5), piston ring (2-10), cylinder (2-11), cylinder barrel (2-6), bushing (2-7), spindle (2-8).Piston cylinder one end (2-2) dress There is plain radial bearing (2-1), is connected for the body hold-down support with unmanned helicopter, piston cylinder (2-2) other end dress Have piston (2-5), piston ring (2-10) is housed on piston (2-5), piston (2-5) is mounted in cylinder (2-11), cylinder (2- 11) top is equipped with piston stopper (2-4), for controlling piston (2-5) stroke.Cylinder (2-11) and piston cylinder (2-2) are provided with Oil liquid and air.Combined seal ring (2-3) is housed between the cylinder lower part (2-11) and piston cylinder (2-2), prevents oil liquid and air Leakage.Piston (2-5) is equipped with spindle mounting hole, is equipped with spindle (2-8).The lower part cylinder (2-11) is set with cylinder barrel (2-6), cylinder Combined seal ring (2-3) is housed between cylinder (2-6) and cylinder (2-11), prevents oil liquid and air from leaking.The lower part cylinder barrel (2-6) is set It is equipped with connection prong (2-12), connection two sides prong (2-12) are provided with pin hole (2-13), and bushing is housed in pin hole (2-13) (2-7).Buffer (2) is connected by connection prong (2-11), pin hole (2-13), pivot pin with the elbow of bracket piping (3).

It is provided with sign board (2-9) outside cylinder (2-11), for indicating buffer (2) compensator or trimmer pressure etc..When described slow Device (2) compression is rushed, air cavity compresses air cavity since oil liquid is flowed by spindle in inner cylinders (2-11), forms air bullet Spring ensures the buffer undercarriage normally landing to avoid impact.

Bracket piping (3) is the supporting mechanism of buffer-type undercarriage, and bracket piping includes elbow one (3-1), two (3- of elbow 7), sled bend pipe (3-2), Anti-skid sheet (3-3), back brace pipe fitting (3-4), seat stay (3-5) and pedal (3-6), one (3- of elbow 1) upper end is fixedly connected with the T connector (1-4) of anti-jamming joint assembly (1), the lower end (3-1) of elbow one and sled bend pipe (3- 2) upper end is fixedly connected, and the upper end (3-7) of elbow two is fixedly connected with the T connector (1-4) of anti-jamming joint assembly (1), elbow Two lower ends (3-7) are fixedly connected with the upper end seat stay (3-5), and the seat stay lower end (3-5) passes through back brace pipe fitting (3-4) and sled The lower end bend pipe (3-2) is fixedly connected.Wherein sled bend pipe (3-2) and seat stay (3-5) in the same plane, no relative motion, Entire bracket piping (3) is the system of a rigidity, is crashed unless meeting with, otherwise bracket piping (3) recoverable deformation invariably.

The seat stay top (3-5) is equipped with pedal, unmanned helicopter above and below personnel easy to repair.

The back brace pipe fitting rear portion (3-4) is equipped with Anti-skid sheet (3-3), prevents unmanned helicopter undercarriage from rising and falling skidding Tail portion lands when rising and falling with unmanned helicopter.

Buffer (2) installation lifting lug is provided on the elbow one (3-1), elbow two (3-7), for installing buffer (2).

Below with reference to embodiment, the utility model is described in further detail:

Embodiment 1

Buffer-type undercarriage described in the utility model is as Figure 1-Figure 4, and when helicopter landing, unilateral undercarriage can be around Axis A1-B1 rotation, so triangle sideline A1-A2 (B1-B2) and A1-A3(B1-B3) formed angle can become Change, therefore sideline A2-A3(B2-B3) length changes, i.e., and damper is pressurized so that damper compression consumption portion of energy；Together When, since undercarriage is rotated around axis A1-B1, so that C1-C2(connection ground) outside relative motion is generated, generation rubs It wipes power and consumes portion of energy.When complete machine speed is reduced to zero, Landing Gear System re-forms movement once opposite with the above process, And so on, whole landing energies of unmanned helicopter will all be dissipated by the frictional force that buffer and sled generate, therefore, greatly Landing shock load is reduced greatly, big landing overload is avoided and airborne equipment is damaged.

The utility model discloses a kind of unmanned helicopter buffer-type undercarriages and its layout type, including buffer-type to rise Fall frame structure type and its mounting means on body.The buffer-type undercarriage is along helicopter center vertical plane bilateral symmetry point Cloth, one-sided configuration includes anti-jamming joint assembly (forward and backward), bracket piping is gentle rushes device (forward and backward): anti-jamming joint assembly is The organ of entire buffer-type undercarriage, when unmanned helicopter after landing, unilateral undercarriage is around forward and backward anti-jamming joint assembly Axis rotation, and then support piping is driven to expand outwardly and compression buffer, realizes consumption landing kinetic energy, reduces overload of landing Effect prevent and treat stuck phenomenon meanwhile, it is capable to fly unbalanced moments caused by landing before eliminating；Bracket piping is buffering The supporting mechanism of formula undercarriage guarantees that system has enough rigidities of structure；Buffer is the functional entity of buffer-type undercarriage, Landing kinetic energy is consumed by the reciprocating motion of buffer, ensures each component operational safety of body.The unmanned helicopter buffering Formula undercarriage is using layout type is rationalized, not only good appearance, succinct, but also flight aerodynamic drag is low, is suitable for plateau, ocean Deng complicated flight environment of vehicle.

The utility model and above embodiments are only to illustrate the technical idea of the utility model, cannot limit this reality with this With novel protection scope, it is all according to the utility model proposes technical idea, that is done on the basis of technical solutions is any Change, each falls within scope of protection of the utility model.

Claims (9)

1. a kind of unmanned helicopter buffer-type undercarriage, it is characterised in that: go straight up on buffer-type sled undercarriage layout type edge Symmetrical at left and right sides of the vertical plane of machine center, one-sided configuration includes anti-jamming joint assembly, buffer and bracket piping；

Unilateral anti-jamming joint assembly is provided with two pieces, and around same axial-movement, anti-jamming joint assembly is that entire buffer-type rises The organ of frame is fallen, anti-jamming joint assembly is made of side lid, cylinder roller bearing, thrust bearing pair and T connector；T Type joint both ends are respectively arranged with cylinder roller bearing mounting base and thrust bearing Submount, to assemble cylinder roller bearing With thrust bearing pair, T connector both ends outside is equipped with side lid, can also be to cylinder roller bearing in addition to fixed T connector function It is limited with thrust bearing pair, above-mentioned side lid and T connector are locked by screw；

The buffer include plain radial bearing, piston cylinder, combined seal ring, piston stopper, piston, piston ring, cylinder, Cylinder barrel, bushing and spindle；Piston cylinder one end is equipped with plain radial bearing, for the body hold-down support phase with unmanned helicopter Connection, the piston cylinder other end are equipped with piston, piston ring are housed on piston, and piston is mounted in cylinder, and cylinder top is equipped with piston Retaining ring, for controlling piston stroke；Combined seal ring is housed between cylinder lower part and piston cylinder, prevents oil liquid and air from leaking;

Piston is equipped with spindle mounting hole, and spindle is housed, and cylinder lower part is set with cylinder barrel, close equipped with combining between cylinder barrel and cylinder Seal prevents oil liquid and air from leaking；Cylinder barrel lower part is provided with connection prong, and connection prong two sides are provided with pin hole, pin hole In be equipped with bushing；

Bracket piping is the supporting mechanism of buffer-type undercarriage, and bracket piping includes elbow one, elbow two, sled bend pipe, anti-skidding Piece, back brace pipe fitting, seat stay and pedal, one upper end of elbow are fixedly connected with the T connector of anti-jamming joint assembly, elbow one Lower end is fixedly connected with sled bend pipe upper end, and two upper end of elbow is fixedly connected with the T connector of anti-jamming joint assembly, elbow two Lower end is fixedly connected with seat stay upper end, and seat stay lower end is fixedly connected by back brace pipe fitting with sled bend pipe lower end.

2. a kind of unmanned helicopter buffer-type undercarriage according to claim 1, it is characterised in that: the elbow One, buffer installation lifting lug is provided on elbow two, for installing buffer.

3. a kind of unmanned helicopter buffer-type undercarriage according to claim 1, it is characterised in that: the left and right sides is anti-sticking Dead joint assembly is connected by screw, nut with body hold-down support, has symmetrical holes on body hold-down support, the symmetrical holes to Fixed anti-jamming joint assembly；When unmanned helicopter after landing, unilateral undercarriage is rotated around forward and backward anti-jamming connector axis, into And support piping is driven to expand outwardly simultaneously compression buffer, it realizes consumption landing kinetic energy, reduce the effect landed and overloaded, meanwhile, Unbalanced moments caused by the linkage bearing of cylinder roller bearing and thrust bearing pair composition flies, lands before capable of eliminating, prevention and treatment Stuck phenomenon occurs.

4. a kind of unmanned helicopter buffer-type undercarriage according to claim 1, it is characterised in that: the buffer Cylinder and piston cylinder be provided with oil liquid and air.

5. a kind of unmanned helicopter buffer-type undercarriage according to claim 1, it is characterised in that: buffer passes through company Prong, pin hole, pivot pin is connect to be connected with the elbow of bracket piping.

6. a kind of unmanned helicopter buffer-type undercarriage according to claim 1, it is characterised in that: setting outside cylinder There is sign board, for indicating buffer compensator or trimmer pressure.

7. a kind of unmanned helicopter buffer-type undercarriage according to claim 1, it is characterised in that: sliding in bracket piping In the same plane, no relative motion, entire bracket piping is the system of a rigidity for sledge bend pipe and seat stay.

8. a kind of unmanned helicopter buffer-type undercarriage according to claim 1, it is characterised in that: the seat stay Connector rear portion is equipped with Anti-skid sheet, prevents unmanned helicopter undercarriage from rising and falling skidding and tail portion lands when unmanned helicopter rises and falls.

9. a kind of unmanned helicopter buffer-type undercarriage according to claim 1, it is characterised in that: seat stay top dress There is pedal.