CN109878699B - Cross-medium aircraft propeller telescoping and aircraft nose tilting device - Google Patents
Cross-medium aircraft propeller telescoping and aircraft nose tilting device Download PDFInfo
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- CN109878699B CN109878699B CN201910158582.9A CN201910158582A CN109878699B CN 109878699 B CN109878699 B CN 109878699B CN 201910158582 A CN201910158582 A CN 201910158582A CN 109878699 B CN109878699 B CN 109878699B
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Abstract
A cross-medium aircraft propeller telescoping and aircraft nose tilting device belongs to the technical field of cross-medium aircraft, wherein a rack I of an aircraft nose telescoping mechanism is meshed with a gear III of a telescoping driving mechanism, and a guide rail I is fixedly connected with an aircraft nose cabin shell; the hollow shaft is sleeved in the middle of a telescopic shaft in the machine head telescopic mechanism, a rack II is meshed with a gear IV, and a guide rail II is fixedly connected with a machine head bin shell; the base of the motor I is fixedly connected with the supporting plate; a base of a motor II in the telescopic driving mechanism is fixedly connected to a shell of the machine head bin, and a bearing II with a seat and a bearing III with a seat are respectively and fixedly connected with a bearing mounting plate I and a bearing mounting plate II; the inner ends of the tilting shaft I and the tilting shaft II are fixedly connected with a machine head cabin shell, the base of the bearing with a seat IV and the base of the bearing with a seat V are fixedly connected with a machine body shell, and the base of the motor III is fixedly connected with the machine body shell; the invention can realize the extension and contraction of the propeller, ensure that the aircraft has good sealing performance and smaller underwater running resistance, realize the rapid water outlet of the aircraft and greatly shorten the water outlet time of the aircraft.
Description
Technical Field
The invention belongs to the technical field of cross-medium aircrafts, and particularly relates to a propeller extension and nose tilting device of a cross-medium aircraft.
Background
The cross-medium aircraft is a novel concept motion platform which is designed by integrating multiple specialties such as aircrafts, underwater vehicles and the like, can fly in the air, and can also be a novel multifunctional integrated device which can dive underwater. The working modes of the aircraft can be divided into an air flight mode, a water inlet mode, an underwater diving mode and a water outlet mode, and can be switched among various working modes according to task requirements. The cross-medium unmanned aerial vehicle can be matched with equipment such as a submarine, a surface naval vessel and the like, and is used for executing tasks such as cross-sea and air intelligence collection, investigation and monitoring, communication relay, electronic countermeasure and the like.
The design difficulty of the cross-medium aircraft mainly focuses on three working modes, namely an underwater diving mode, a water outlet mode and the like, when the aircraft is transited from the air flight mode to the underwater diving mode, the propeller which provides power in the air flight mode and is positioned at the aircraft head generates impact force on the water surface, the underwater diving resistance is increased, and the underwater sealing performance of the aircraft is influenced. The cross-medium aircraft can be subjected to the resistance action of surrounding water flow in the water outlet process, so that the water outlet power is insufficient.
Disclosure of Invention
The invention aims to provide a cross-medium aircraft propeller stretching and nose tilting device aiming at the defects of the prior art, the nose stretching mechanism and the propeller stretching mechanism of the device can realize the stretching and shrinking of a propeller, when an aircraft flies in the air, the propeller stretches out of a nose bin and provides flying power, and when the aircraft dives underwater, the propeller shrinks into the nose bin, so that the aircraft is ensured to have good sealing performance and smaller underwater operation resistance. The aircraft nose tilting mechanism can realize tilting of the aircraft nose bin, and when the aircraft crosses the medium to discharge water, the propeller can be ensured to provide optimal water discharge power for the aircraft through controlling the inclination angle of the aircraft nose bin, so that the aircraft can discharge water quickly, and the water discharge time of the aircraft is shortened greatly.
The invention comprises a machine head telescopic mechanism A, a propeller telescopic mechanism B, a propeller driving mechanism C, a telescopic driving mechanism D and a machine head tilting mechanism E, wherein a rack I39 at the right part of a telescopic shaft 7 in the machine head telescopic mechanism A is meshed with a gear III 21 in the telescopic driving mechanism D; a guide rail I8 of the machine head telescopic mechanism A is fixedly connected with a stud group III d through a mounting hole II 42, and the stud group III d is welded with the machine head cabin shell 37; the hollow shaft 10 of the propeller telescopic mechanism B is sleeved on a telescopic shaft 7 in the nose telescopic mechanism A and is positioned between the rear cover 6 and the rack I39; a rack II 14 of the propeller telescopic mechanism B is meshed with gear teeth of a gear IV 24 in the telescopic driving mechanism D; a guide rail II 15 of the propeller telescopic mechanism B is fixedly connected with a stud group vf through a mounting hole III 44, and the stud group vf is welded with the machine head cabin shell 37; the central hole of a gear I16 in the propeller driving mechanism C is sleeved at a threaded hole 11 near the right end of a hollow shaft 10 of the propeller telescopic mechanism B and is fixedly connected through a screw; a base of a motor I18 of the propeller driving mechanism C is fixedly connected to a mounting hole V46 of a support plate 13 in the propeller telescopic mechanism B through a bolt; the base of a motor II 26 in the telescopic driving mechanism D is fixedly connected with a stud group IVe, the stud group IVe is welded with the handpiece bin outer shell 37, the base of a bearing II 19 with a seat is fixedly connected with a bearing mounting plate Ii through a stud group Ic, and the bearing mounting plate Ii is fixedly connected with a guide rail I8 through a stud group IIId; the base of the bearing with the seat III 25 is fixedly connected with a bearing mounting plate II j through a bolt group II g, and the bearing mounting plate II j is fixedly connected with the guide rail II 15 through a bolt group vf; in the machine head tilting mechanism E, the inner end of a tilting shaft I29 is fixedly connected to the middle of the right side of a machine head bin shell 37, the inner end of a tilting shaft II 34 is fixedly connected to the middle of the left side of the machine head bin shell 37, and the tilting shaft I29 is coaxial with the tilting shaft II 34; the base of the bearing IV 31 with a seat is fixedly connected with a stud group Ia, the stud group Ia is welded with the machine body shell 36, the base of the bearing V33 with a seat is fixedly connected with a stud group VI h, and the stud group VI h is welded with the machine body shell 36; the base of the motor III 32 is fixedly connected with a stud group IIb, and the stud group IIb is welded with the machine body shell 36.
The machine head telescopic mechanism A comprises a machine head 1, a baffle 2, a spring 3, an installation sleeve 4, a sealing ring 5, a rear cover 6, a telescopic shaft 7 and a guide rail I8, wherein the left end of the telescopic shaft 7 is provided with an external thread 38, the right section of the telescopic shaft is square, the upper surface of the right part of the telescopic shaft is provided with a rack I39, and the rack I39 is arranged in a guide groove I41 of the guide rail I8 and is in sliding connection with the guide groove I41; the left part of the telescopic shaft 7 sequentially penetrates through the sealing ring 5, the rear cover 6 and the spring 3; the baffle 2 is in threaded connection with the left end of the telescopic shaft 7; the machine head 1 is a hollow cone, the inner ring of the mounting sleeve 4 is provided with internal threads, and the mounting sleeve 4 is fixedly connected in the right end of the machine head 1 through the outer ring; the outer ring of the rear cover 6 is provided with external threads, the rear cover 6 is in threaded connection with the mounting sleeve 4, and the rear cover 6 is sleeved at the left end of the telescopic shaft 7 and is in sliding connection with the telescopic shaft 7; the left surface of the sealing ring 5 is bonded with the right end surface of the machine head 1 and the right end surface of the mounting sleeve 4.
The propeller telescoping mechanism B consists of a propeller blade group 9, a hollow shaft 10, a bearing with a seat I12, a support plate 13, a rack II 14 and a guide rail II 15, wherein the propeller blade group 9 consists of four propeller blades, and four pairs of perforated vertical plates of a vertical plate group 49 are uniformly distributed on the circumferential surface of the left end of the hollow shaft 10; a threaded hole 11 is formed on the circumferential surface of the hollow shaft 10 near the right end; the upper part of the support plate 13 is provided with a positioning hole 48 and a mounting hole IV 45; the lower part of the supporting plate 13 is provided with a rectangular hole 47 and a mounting hole V46; the right end of the hollow shaft 10 is in interference connection with an inner ring of a bearing with a seat I12, and a bearing seat of the bearing with a seat I12 is fixedly connected to a mounting hole IV 45 of the support plate 13 through a bolt; the left end of the rack II 14 is fixedly connected to two holes on the lower side of the mounting hole V46 of the support plate 13 through bolts, and the rack II 14 is mounted in the guide groove II 43 of the guide rail II 15 and is in sliding connection with the guide groove II 43; the four propeller blades are fixedly connected to four pairs of perforated vertical plates of the vertical plate group 49 in a distributed manner.
The propeller driving mechanism C is composed of a gear I16, a gear II 17 and a motor I18, wherein the gear II 17 is fixedly connected to an output shaft of the motor I18, and the gear II 17 is meshed with the gear I16.
The telescopic driving mechanism D is composed of a bearing with a seat II 19, a gear shaft 20, a gear III 21, a worm gear I22, a worm I23, a gear IV 24, a bearing with a seat III 25 and a motor II 26, wherein the upper end and the lower end of the gear shaft 20 are circular, and the middle part of the gear shaft is in a regular hexagon shape; inner holes of the gear III 21, the gear IV 24 and the worm gear I22 are all in a regular hexagon shape; the bearing II with the seat 19, the gear III 21, the worm gear I22, the gear IV 24 and the bearing III with the seat 25 are sequentially arranged from top to bottom, wherein the gear III 21 is fixedly connected to the upper end, close to the gear shaft 20, of the gear shaft 20 through screws, the worm gear I22 is fixedly connected to the middle of the gear shaft 20 through screws, the gear IV 24 is fixedly connected to the lower end, close to the gear shaft 20, of the gear shaft 20 through screws, the bearing II with the seat 19 is in interference connection with the upper end of the gear shaft 20 through an inner ring, and the bearing III with the seat 25 is in interference connection with the lower end of the gear shaft 20 through the inner ring; the right end of the worm I23 is fixedly connected with an output shaft of the motor II 26, and the left part of the worm I23 and the worm wheel I22 form worm gear transmission.
The machine head tilting mechanism E consists of a worm gear II 27, a worm II 28, a tilting shaft I29, an outer clamp spring I30, a bearing with a seat IV 31, a motor III 32, a bearing with a seat V33, a tilting shaft II 34 and an outer clamp spring II 35, wherein the upper end of the tilting shaft I29 is a regular hexagon, the middle part and the lower end of the tilting shaft I29 are stepped circular shafts, an inner hole of the worm gear II 27 is a regular hexagon and is fixedly connected to the upper end of the tilting shaft I29 through a screw, the inner ring of the bearing with a seat IV 31 is in interference connection with the middle part of the tilting shaft I29, and two sides of the bearing with a seat IV 31 are limited by shaft shoulders and the outer clamp spring I30; the tilting shaft II 34 is a stepped shaft, the lower end of the tilting shaft II 34 is in interference connection with an inner ring of the bearing V33 with the seat, and two sides of the bearing V33 with the seat are limited by shaft shoulders and an outer clamp spring II 35; the right end of the worm II 28 is fixedly connected with an output shaft of the motor III 32, and the worm II 28 is in meshing transmission with the worm wheel II 27.
The working process of the invention is as follows: when the propeller blade group 9 extends outwards, the motor II 26 starts to rotate anticlockwise, power is transmitted to the worm I23 from an output shaft of the motor II 26, the worm I23 pushes the worm wheel I22 to rotate clockwise, the worm wheel I22 drives the whole gear shaft 20 to rotate clockwise, the gear III 21 and the gear IV 24 which are arranged on the gear shaft 20 start to rotate clockwise, the gear III 21 drives the telescopic shaft 7 to extend outwards slowly through gear and rack transmission with the rack I39, so as to drive the handpiece 1 to extend outwards slowly, the gear IV 24 drives the propeller blade group 9 and the propeller driving mechanism C to extend outwards slowly through gear and rack transmission with the rack II 14, when a specified extending distance is reached, the motor II 26 stops rotating, the propeller extending process is finished, and because the extending distances of the handpiece 1 and the propeller blade group 9 are different, the reference circle diameters of the gear III and the gear IV 24 at the position need to be determined according to the actual extending distance, after the stretching process is finished, the motor I18 starts to rotate, power is transmitted to the gear I16 through the gear II 17 to drive the hollow shaft 10 to rotate, and the propeller blade group 9 starts to rotate along with the hollow shaft 10.
When the propeller blade group 9 contracts inwards, the motor I18 stops rotating, the motor II 26 starts rotating clockwise, power is transmitted to the worm I23 from an output shaft of the motor II 26, the worm I23 pushes the worm wheel I22 to rotate anticlockwise, the worm wheel I22 drives the whole gear shaft 20 to rotate anticlockwise, the gear III 21 and the gear IV 24 which are arranged on the gear shaft 20 start rotating anticlockwise, the gear III 21 drives the telescopic shaft 7 to slowly contract towards the nose bin through gear and rack transmission with the rack I39, so that the nose 1 is driven to slowly contract inwards, the gear IV 24 drives the propeller blade group 9 and the propeller driving mechanism C to slowly contract towards the nose bin through gear and rack transmission with the rack II 14, when the sealing ring 5 on the right end face of the nose 1 contacts the nose bin outer shell 37, the telescopic shaft 7 continuously contracts inwards, so that the spring 3 generates certain deformation, and the whole nose bin is better sealed, and stopping the rotation of the motor II 26, and finishing the contraction process of the propeller.
When the medium goes out water is striden to the aircraft, according to the power take off requirement, through the direction of rotation of control motor III 32, alright realize aircraft nose storehouse anticlockwise or clockwise rotation, when motor III 32 stall, aircraft nose storehouse alright keep the angle of verting this moment.
The invention has the beneficial effects that:
1. the propeller telescopic mechanism is utilized to realize the extension and contraction of the propeller, the problem that the propeller influences the surrounding water flow when the aircraft is submerged under water is well solved, and the aircraft is ensured to have good sealing performance and smaller underwater running resistance.
2. Utilize the aircraft nose mechanism of verting to realize the change of aircraft nose storehouse inclination, solved the aircraft better and gone out the not enough problem of water power, realize that the aircraft goes out water fast, shorten the play water time of aircraft by a wide margin.
Drawings
FIG. 1 is a top view of a cross-media aircraft propeller telescoping and nose tip tilting device
FIG. 2 is a front view of a cross-media aircraft propeller telescoping and nose tilting device
FIG. 3 is a schematic structural view of a head retracting mechanism A
FIG. 4 is a schematic structural view of a propeller telescoping mechanism B
FIG. 5 is a schematic view of a propeller driving mechanism C
FIG. 6 is a schematic structural view of the telescopic driving mechanism D
FIG. 7 is a schematic structural view of a head tilting mechanism E
FIG. 8 is a front view, a plan view, and a left side view of the telescopic shaft 7
FIG. 9 is a front view, a plan view, and a left side view of the rack II 14
FIG. 10 is a front view, a plan view, and a left side view of the guide rail I8
FIG. 11 is a front view, a plan view, and a left side view of the guide rail II 15
FIG. 12 is a front view and a left side view of the gear shaft 20
FIG. 13 is a left side view of the supporting plate 13
FIG. 14 is a front view of the hollow axle 10
FIG. 15 is a cross-sectional view A-A of the hollow shaft 10
FIG. 16 is a schematic view of a cross-medium aircraft in flight
FIG. 17 is a schematic view of a cross-medium aircraft during underwater diving
Wherein: A. the machine head telescopic mechanism B, the propeller telescopic mechanism C, the propeller driving mechanism D, the telescopic driving mechanism E, the machine head tilting mechanism 1, the machine head 2, the baffle plate 3, the spring 4, the mounting sleeve 5, the sealing ring 6, the rear cover 7, the telescopic shaft 8, the guide rail I9, the propeller blade group 10, the hollow shaft 11, the threaded hole 12, the bearing with a seat I13, the support plate 14, the rack II 15, the guide rail II 16, the gear I17, the gear II 18, the motor I19, the bearing with a seat II 20, the gear shaft 21, the gear III 22, the worm I23, the worm I24, the gear IV 25, the bearing with a seat III 26, the motor II 27, the worm II 28, the tilting shaft I30, the outer clamp I31, the bearing with a seat IV 32, the motor III 33, the bearing with a seat 34, the tilting shaft II 35, the outer clamp II 36, the machine body shell 37, the machine head shell 38, the outer thread 39, the rack I40, the mounting structure II Mounting holes I41, guide grooves I42, mounting holes II 43, guide grooves II 44, mounting holes III 45, mounting holes IV 46, mounting holes V47, rectangular holes 48, positioning holes 49, vertical plate group a, bolt group Ib, bolt group IIc, bolt group Id, bolt group III e, bolt group IV f, bolt group V g, bolt group IIh, bolt group VI i, bearing mounting plate Ij, bearing mounting plate IIj
Detailed Description
The invention is described below with reference to the drawings.
As shown in fig. 1 to 8, 10, 11 and 13, the present invention comprises a machine head telescopic mechanism a, a propeller telescopic mechanism B, a propeller driving mechanism C, a telescopic driving mechanism D and a machine head tilting mechanism E, wherein a rack i 39 at the right part of a telescopic shaft 7 in the machine head telescopic mechanism a is engaged with a gear iii 21 in the telescopic driving mechanism D; a guide rail I8 of the machine head telescopic mechanism A is fixedly connected with a stud group III d through a mounting hole II 42, and the stud group III d is welded with the machine head cabin shell 37; the hollow shaft 10 of the propeller telescopic mechanism B is sleeved on a telescopic shaft 7 in the nose telescopic mechanism A and is positioned between the rear cover 6 and the rack I39; a rack II 14 of the propeller telescopic mechanism B is meshed with gear teeth of a gear IV 24 in the telescopic driving mechanism D; a guide rail II 15 of the propeller telescopic mechanism B is fixedly connected with a stud group vf through a mounting hole III 44, and the stud group vf is welded with the machine head cabin shell 37; the central hole of a gear I16 in the propeller driving mechanism C is sleeved at a threaded hole 11 near the right end of a hollow shaft 10 of the propeller telescopic mechanism B and is fixedly connected through a screw; a base of a motor I18 of the propeller driving mechanism C is fixedly connected to a mounting hole V46 of a support plate 13 in the propeller telescopic mechanism B through a bolt; the base of a motor II 26 in the telescopic driving mechanism D is fixedly connected with a stud group IVe, the stud group IVe is welded with the handpiece bin outer shell 37, the base of a bearing II 19 with a seat is fixedly connected with a bearing mounting plate Ii through a stud group Ic, and the bearing mounting plate Ii is fixedly connected with a guide rail I8 through a stud group IIId; the base of the bearing with the seat III 25 is fixedly connected with a bearing mounting plate II j through a bolt group II g, and the bearing mounting plate II j is fixedly connected with the guide rail II 15 through a bolt group vf; in the machine head tilting mechanism E, the inner end of a tilting shaft I29 is fixedly connected to the middle of the right side of a machine head bin shell 37, the inner end of a tilting shaft II 34 is fixedly connected to the middle of the left side of the machine head bin shell 37, and the tilting shaft I29 is coaxial with the tilting shaft II 34; the base of the bearing IV 31 with a seat is fixedly connected with a stud group Ia, the stud group Ia is welded with the machine body shell 36, the base of the bearing V33 with a seat is fixedly connected with a stud group VI h, and the stud group VI h is welded with the machine body shell 36; the base of the motor III 32 is fixedly connected with a stud group IIb, and the stud group IIb is welded with the machine body shell 36.
As shown in fig. 3, 8 and 10, the nose telescoping mechanism a comprises a nose 1, a baffle 2, a spring 3, an installation sleeve 4, a seal ring 5, a rear cover 6, a telescoping shaft 7 and a guide rail i 8, wherein the left end of the telescoping shaft 7 is provided with an external thread 38, the right section of the telescoping shaft is square, the right upper surface of the telescoping shaft is provided with a rack i 39, and the rack i 39 is installed in a guide groove i 41 of the guide rail i 8 and is in sliding connection with the guide groove i 41; the left part of the telescopic shaft 7 sequentially penetrates through the sealing ring 5, the rear cover 6 and the spring 3; the baffle 2 is in threaded connection with the left end of the telescopic shaft 7; the machine head 1 is a hollow cone, the inner ring of the mounting sleeve 4 is provided with internal threads, and the mounting sleeve 4 is fixedly connected in the right end of the machine head 1 through the outer ring; the outer ring of the rear cover 6 is provided with external threads, the rear cover 6 is in threaded connection with the mounting sleeve 4, and the rear cover 6 is sleeved at the left end of the telescopic shaft 7 and is in sliding connection with the telescopic shaft 7; the left surface of the sealing ring 5 is bonded with the right end surface of the machine head 1 and the right end surface of the mounting sleeve 4.
As shown in fig. 4, 9, 11, 13 to 15, the propeller telescoping mechanism B is composed of a propeller blade group 9, a hollow shaft 10, a bearing with a seat i 12, a support plate 13, a rack ii 14 and a guide rail ii 15, wherein the propeller blade group 9 is composed of four propeller blades, and four pairs of perforated vertical plates of a vertical plate group 49 are uniformly distributed on the circumferential surface of the left end of the hollow shaft 10; a threaded hole 11 is formed on the circumferential surface of the hollow shaft 10 near the right end; the upper part of the support plate 13 is provided with a positioning hole 48 and a mounting hole IV 45; the lower part of the supporting plate 13 is provided with a rectangular hole 47 and a mounting hole V46; the right end of the hollow shaft 10 is in interference connection with an inner ring of a bearing with a seat I12, and a bearing seat of the bearing with a seat I12 is fixedly connected to a mounting hole IV 45 of the support plate 13 through a bolt; the left end of the rack II 14 is fixedly connected to two holes on the lower side of the mounting hole V46 of the support plate 13 through bolts, and the rack II 14 is mounted in the guide groove II 43 of the guide rail II 15 and is in sliding connection with the guide groove II 43; the four propeller blades are fixedly connected to four pairs of perforated vertical plates of the vertical plate group 49 in a distributed manner.
As shown in fig. 5, the propeller driving mechanism C is composed of a gear i 16, a gear ii 17, and a motor i 18, wherein the gear ii 17 is fixedly connected to an output shaft of the motor i 18, and the gear ii 17 and the gear i 16 are engaged with each other.
As shown in fig. 6 and 12, the telescopic driving mechanism D is composed of a bearing with a seat ii 19, a gear shaft 20, a gear iii 21, a worm wheel i 22, a worm i 23, a gear iv 24, a bearing with a seat iii 25, and a motor ii 26, wherein the upper and lower ends of the gear shaft 20 are circular, and the middle part is a regular hexagon; inner holes of the gear III 21, the gear IV 24 and the worm gear I22 are all in a regular hexagon shape; the bearing II with the seat 19, the gear III 21, the worm gear I22, the gear IV 24 and the bearing III with the seat 25 are sequentially arranged from top to bottom, wherein the gear III 21 is fixedly connected to the upper end, close to the gear shaft 20, of the gear shaft 20 through screws, the worm gear I22 is fixedly connected to the middle of the gear shaft 20 through screws, the gear IV 24 is fixedly connected to the lower end, close to the gear shaft 20, of the gear shaft 20 through screws, the bearing II with the seat 19 is in interference connection with the upper end of the gear shaft 20 through an inner ring, and the bearing III with the seat 25 is in interference connection with the lower end of the gear shaft 20 through the inner ring; the right end of the worm I23 is fixedly connected with an output shaft of the motor II 26, and the left part of the worm I23 and the worm wheel I22 form worm gear transmission.
As shown in fig. 7, the head tilting mechanism E comprises a worm gear ii 27, a worm ii 28, a tilting shaft i 29, an outer snap spring i 30, a bearing with a seat iv 31, a motor iii 32, a bearing with a seat v 33, a tilting shaft ii 34 and an outer snap spring ii 35, wherein the upper end of the tilting shaft i 29 is a regular hexagon, the middle and lower ends thereof are stepped circular shafts, an inner hole of the worm gear ii 27 is a regular hexagon and is fixedly connected to the upper end of the tilting shaft i 29 through a screw, an inner ring of the bearing with a seat iv 31 is in interference connection with the middle of the tilting shaft i 29, and two sides of the bearing with a seat iv 31 are limited by a shaft shoulder and the outer snap spring i 30; the tilting shaft II 34 is a stepped shaft, the lower end of the tilting shaft II 34 is in interference connection with an inner ring of the bearing V33 with the seat, and two sides of the bearing V33 with the seat are limited by shaft shoulders and an outer clamp spring II 35; the right end of the worm II 28 is fixedly connected with an output shaft of the motor III 32, and the worm II 28 is in meshing transmission with the worm wheel II 27.
As shown in fig. 16 and 17, the propeller extension and aircraft nose tilting device can be installed in the cross-medium aircraft as shown in the figure, so that good transition between aerial flight and underwater crawling of the cross-medium aircraft can be realized, the cross-medium aircraft is guaranteed to have good appearance and sealing performance underwater, underwater running resistance is reduced, when the aircraft goes out water across a medium, optimal water outlet power can be provided for the aircraft, the aircraft can go out water quickly, and the water outlet time of the aircraft is shortened greatly.
Claims (4)
1. The utility model provides a cross flexible and aircraft nose of medium aircraft screw and vert device which characterized in that: the device comprises a machine head telescopic mechanism (A), a propeller telescopic mechanism (B), a propeller driving mechanism (C), a telescopic driving mechanism (D) and a machine head tilting mechanism (E), wherein the telescopic driving mechanism (D) comprises a bearing II with a seat (19), a gear shaft (20), a gear III (21), a worm wheel I (22), a worm I (23), a gear IV (24), a bearing III with a seat (25) and a motor II (26), wherein the upper end and the lower end of the gear shaft (20) are circular, and the middle part of the gear shaft is in a regular hexagon shape; inner holes of the gear III (21), the gear IV (24) and the worm wheel I (22) are all in a regular hexagon shape; the bearing with the seat II (19), the gear III (21), the worm gear I (22), the gear IV (24) and the bearing with the seat III (25) are sequentially arranged from top to bottom, wherein the gear III (21) is fixedly connected to the upper end, close to the gear shaft (20), of the gear shaft (20) through screws, the worm gear I (22) is fixedly connected to the middle of the gear shaft (20) through screws, the gear IV (24) is fixedly connected to the lower end, close to the gear shaft (20), of the gear shaft (20) through screws, the bearing with the seat II (19) is in interference connection with the upper end of the gear shaft (20) through an inner ring, and the bearing with the seat III (25) is in interference connection with the lower end of the gear shaft (20) through the inner ring; the right end of the worm I (23) is fixedly connected with an output shaft of the motor II (26), and the left part of the worm I (23) and the worm wheel I (22) form worm wheel and worm transmission; the machine head tilting mechanism (E) is composed of a worm wheel II (27), a worm II (28), a tilting shaft I (29), an outer clamp spring I (30), a bearing with a seat IV (31), a motor III (32), a bearing with a seat V (33), a tilting shaft II (34) and an outer clamp spring II (35), wherein the upper end of the tilting shaft I (29) is a regular hexagon, the middle part and the lower end of the tilting shaft I (29) are stepped circular shafts, an inner hole of the worm wheel II (27) is a regular hexagon and is fixedly connected to the upper end of the tilting shaft I (29) through a screw, an inner ring of the bearing with a seat IV (31) is in interference connection with the middle part of the tilting shaft I (29), and the two sides of the bearing with a seat IV (31) are limited by a shaft shoulder and the outer clamp spring I (30); the tilting shaft II (34) is a stepped shaft, the lower end of the tilting shaft II (34) is in interference connection with an inner ring of the bearing V (33) with a seat, and two sides of the bearing V (33) with the seat are limited by shaft shoulders and an outer clamp spring II (35); the right end of the worm II (28) is fixedly connected with an output shaft of the motor III (32), and the worm II (28) is in meshing transmission with the worm wheel II (27); wherein, a rack I (39) at the right part of a telescopic shaft (7) in the machine head telescopic mechanism (A) is meshed with the gear teeth of a gear III (21) in the telescopic driving mechanism (D); a guide rail I (8) of the machine head telescopic mechanism (A) is fixedly connected with a stud group III (d) through a mounting hole II (42), and the stud group III (d) is welded with a machine head cabin shell (37); a hollow shaft (10) of the propeller telescopic mechanism (B) is sleeved on a telescopic shaft (7) in the nose telescopic mechanism (A) and is positioned between the rear cover (6) and the rack I (39); a rack II (14) of the propeller telescopic mechanism (B) is meshed with gear teeth of a gear IV (24) in the telescopic driving mechanism (D); a guide rail II (15) of the propeller telescopic mechanism (B) is fixedly connected with a stud group V (f) through a mounting hole III (44), and the stud group V (f) is welded with a machine head cabin shell (37); a central hole of a gear I (16) in the propeller driving mechanism (C) is sleeved at a threaded hole (11) near the right end of a hollow shaft (10) of the propeller telescopic mechanism (B) and is fixedly connected through a screw; a base of a motor I (18) of the propeller driving mechanism (C) is fixedly connected to a mounting hole V (46) of a support plate (13) in the propeller telescopic mechanism (B) through a bolt; the base of a motor II (26) in the telescopic driving mechanism (D) is fixedly connected with a stud group IV (e), the stud group IV (e) is welded with a machine head bin shell (37), the base of a bearing II (19) with a seat is fixedly connected with a bearing mounting plate I (i) through a stud group I (c), and the bearing mounting plate I (i) is fixedly connected with a guide rail I (8) through a stud group III (D); the base of the bearing III (25) with the seat is fixedly connected with a bearing mounting plate II (j) through a bolt group II (g), and the bearing mounting plate II (j) is fixedly connected with a guide rail II (15) through a bolt group V (f); the inner end of a tilting shaft I (29) in a machine head tilting mechanism (E) is fixedly connected to the middle of the right side of a machine head bin shell (37), the inner end of a tilting shaft II (34) is fixedly connected to the middle of the left side of the machine head bin shell (37), and the tilting shaft I (29) is coaxial with the tilting shaft II (34); the base of the bearing with seat IV (31) is fixedly connected with a stud group I (a), the stud group I (a) is welded with a machine body shell (36), the base of the bearing with seat V (33) is fixedly connected with a stud group VI (h), and the stud group VI (h) is welded with the machine body shell (36); the base of the motor III (32) is fixedly connected with a stud group II (b), and the stud group II (b) is welded with the machine body shell (36).
2. The cross-media aircraft propeller telescoping and nose tilting device of claim 1, wherein: the machine head telescopic mechanism (A) consists of a machine head (1), a baffle (2), a spring (3), an installation sleeve (4), a sealing ring (5), a rear cover (6), a telescopic shaft (7) and a guide rail I (8), wherein the left end of the telescopic shaft (7) is provided with an external thread (38), the right section of the telescopic shaft is square, the right part of the telescopic shaft is provided with a rack I (39), and the rack I (39) is installed in a guide groove I (41) of the guide rail I (8) and is in sliding connection with the guide groove I (41); the left part of the telescopic shaft (7) sequentially penetrates through the sealing ring (5), the rear cover (6) and the spring (3); the baffle (2) is in threaded connection with the left end of the telescopic shaft (7); the machine head (1) is a hollow cone, the inner ring of the mounting sleeve (4) is provided with internal threads, and the mounting sleeve (4) is fixedly connected into the right end of the machine head (1) through the outer ring; the outer ring of the rear cover (6) is provided with external threads, the rear cover (6) is in threaded connection with the mounting sleeve (4), and the rear cover (6) is sleeved at the left end, close to the telescopic shaft (7), and is in sliding connection with the telescopic shaft (7); the left surface of the sealing ring (5) is bonded with the right end surface of the machine head (1) and the right end surface of the mounting sleeve (4).
3. The cross-media aircraft propeller telescoping and nose tilting device of claim 1, wherein: the propeller telescoping mechanism (B) consists of a propeller blade group (9), a hollow shaft (10), a bearing I (12) with a seat, a support plate (13), a rack II (14) and a guide rail II (15), wherein the propeller blade group (9) consists of four propeller blades, and four pairs of perforated vertical plates of a vertical plate group (49) are uniformly distributed on the circumferential surface of the left end of the hollow shaft (10); a threaded hole (11) is formed in the circumferential surface of the hollow shaft (10) close to the right end; the upper part of the support plate (13) is provided with a positioning hole (48) and an installation hole IV (45); the lower part of the supporting plate (13) is provided with a rectangular hole (47) and a mounting hole V (46); the right end of the hollow shaft (10) is in interference connection with an inner ring of a bearing I (12) with a seat, and a bearing seat of the bearing I (12) with the seat is fixedly connected to an installation hole IV (45) of the support plate (13) through a bolt; the left end of the rack II (14) is fixedly connected to two holes on the lower side of the mounting hole V (46) of the support plate (13) through bolts, and the rack II (14) is mounted in a guide groove II (43) of the guide rail II (15) and is in sliding connection with the guide groove II (43); the four propeller blades are fixedly connected to four pairs of perforated vertical plates of the vertical plate group (49) in a distribution manner.
4. The cross-media aircraft propeller telescoping and nose tilting device of claim 1, wherein: the propeller driving mechanism (C) is composed of a gear I (16), a gear II (17) and a motor I (18), wherein the gear II (17) is fixedly connected to an output shaft of the motor I (18), and the gear II (17) is meshed with the gear I (16).
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| CN113085462B (en) * | 2021-04-23 | 2023-06-13 | 南京航空航天大学 | Cross-medium unmanned aerial vehicle device and control method thereof |
| CN115285347B (en) * | 2022-07-01 | 2023-06-23 | 哈尔滨工程大学 | High-speed inclined water inlet bionic load-reducing structure and water inlet method |
| CN115180123B (en) * | 2022-08-18 | 2024-03-19 | 南京航空航天大学 | Active noise reduction mechanism, system and method based on control of rotor radius length |
| CN115649423B (en) * | 2022-12-29 | 2023-03-21 | 中国空气动力研究与发展中心空天技术研究所 | Cross-medium aircraft water-air coaxial double-paddle structure |
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