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CN-121990203-A - Vertical double-rotor helicopter type unmanned aerial vehicle

CN121990203ACN 121990203 ACN121990203 ACN 121990203ACN-121990203-A

Abstract

The invention relates to a rotor craft, more specifically relates to the technical field of rotor unmanned helicopters, and discloses a tandem double-rotor helicopter type unmanned aerial vehicle, which comprises an unmanned aerial vehicle body, wherein an installation part is arranged on the unmanned aerial vehicle body, a vector adjusting part is arranged on the installation part, a rotor part is arranged on the vector adjusting part, a coupling part is arranged on the rotor part, a supporting part is further arranged on the vector adjusting part, the rotor part comprises a rotating shaft, the supporting part comprises a gas film bearing seat, a gas film bearing is attached to the inner wall of the gas film bearing seat, a non-contact supporting structure matched with the gas film bearing seat is adopted, and a stable high-pressure gas film is formed between the gas film bearing seat and the gas film bearing seat by utilizing the gas flow generated by the rotation of a blade, so that the gas film bearing seat and the rotating shaft are completely non-contacted, the mechanical friction and vibration transmission of the traditional mechanical bearing are thoroughly eliminated, the radial shaking of the rotating shaft and the shaking of a propeller disc are effectively inhibited, and the flying stability of the unmanned aerial vehicle is greatly improved.

Inventors

  • Sun Kelun
  • WANG YANLEI

Assignees

  • 东海县腾翔航空科技有限公司

Dates

Publication Date
20260508
Application Date
20260323

Claims (10)

  1. 1. The utility model provides a tandem double-rotor helicopter unmanned aerial vehicle, includes unmanned aerial vehicle body (1), its characterized in that is provided with installation department (2) on unmanned aerial vehicle body (1), install vector adjustment portion (3) on installation department (2), install rotor portion (4) on vector adjustment portion (3), be provided with coupling portion (6) on rotor portion (4), still install supporting part (5) on vector adjustment portion (3), rotor portion (4) include pivot (42), supporting part (5) include air film bearing frame (52), air film bearing frame (52) inner wall laminating has air bearing (53), coupling portion (6) include wedge guiding gutter (61), wedge guiding gutter (61) encircle and set up on air bearing (53), spiral guiding gutter (64) have been seted up to the inner wall of air bearing (53), air bearing (53) movable sleeve is established at pivot (42) outer wall, the inner wall of air bearing (53) and guiding gutter (42), outer wall and pivot (64) do not contact, between the outer wall of air bearing (53) and pivot (4) fluid-filled damping portion (4), fluid damping portion (4) are filled up The supporting part (5) and the coupling part (6) form a column type rotor assembly.
  2. 2. The tandem double-rotor helicopter unmanned aerial vehicle of claim 1, wherein the damping fluid is silicone oil, flexible damping rings (63) are fixedly connected to two ends of the inner wall of the air bearing (53), and the inner wall of the flexible damping rings (63) is in contact with the outer wall of the rotating shaft (42).
  3. 3. The tandem dual-rotor helicopter unmanned aerial vehicle according to claim 1, wherein the rotor section (4) further comprises a brushless motor (41), an output shaft of the brushless motor (41) is fixedly connected with a rotating shaft (42), a hub is mounted at one end, far away from the brushless motor (41), of the rotating shaft (42), paddles (43) are fixedly connected to the hub, and a first wedge (44) is connected to the hub in a surrounding mode.
  4. 4. A tandem double rotor helicopter unmanned aerial vehicle according to claim 3, wherein said coupling portion (6) further comprises a second wedge (62) corresponding to said first wedge (44), said second wedge (62) is circumferentially connected to one end of said air bearing (53), and said first wedge (44) and said second wedge (62) are disposed in opposition.
  5. 5. The vertical double-rotor helicopter unmanned aerial vehicle of claim 3, wherein the vector adjusting part (3) comprises a steering engine I (31) and a positioning arm (32), an output shaft of the steering engine I (31) is rotationally connected to the positioning arm (32), a turntable I (33) is fixedly connected to an output shaft of the steering engine I (31), two positioning plates (34) are symmetrically arranged on the turntable I (33), a steering engine II (35) is arranged on one of the positioning plates (34), an output shaft of the steering engine II (35) is rotationally connected to the other positioning plate (34), a turntable II (36) is fixedly connected to an output shaft of the steering engine II (35), and the brushless motor (41) is arranged on the turntable II (36).
  6. 6. The tandem double-rotor helicopter unmanned aerial vehicle according to claim 5, wherein the supporting portion (5) further comprises a supporting piece (51), the supporting piece (51) is fixedly connected to the turntable II (36), the air film bearing seat (52) is fixedly connected to the supporting piece (51), and the outer walls of the two ends of the air bearing (53) are fixedly connected with limiting convex edges (54).
  7. 7. The tandem double-rotor helicopter unmanned aerial vehicle according to claim 5, wherein the mounting portion (2) comprises a first mounting groove (21), the first mounting groove (21) is formed in the tail of the unmanned aerial vehicle body (1), a first mounting groove (22) is formed in one side of the first mounting groove (21), a first positioning groove (23) is formed in the other side of the first mounting groove (21), the steering engine (31) is mounted on the inner wall of the first mounting groove (22), the positioning arm (32) is mounted on the inner wall of the first positioning groove (23), and the first turntable (33) is located on the inner wall of the first mounting groove (21).
  8. 8. The tandem double-rotor helicopter unmanned aerial vehicle according to claim 7, wherein a second installation groove (24) is formed in a machine head of the unmanned aerial vehicle body (1), a second installation groove (25) is formed in one side of the second installation groove (24), and a second positioning groove (26) is formed in the other side of the second installation groove (24).
  9. 9. A tandem double-rotor helicopter unmanned aerial vehicle according to claim 8, wherein the number of tandem rotor assemblies is two, steering engine one (31) of vector adjusting part (3) in the other tandem rotor assembly is mounted on the inner wall of machine groove two (25), and the other positioning arm (32) is mounted on the inner wall of positioning groove two (26).
  10. 10. The tandem double-rotor helicopter unmanned aerial vehicle of claim 1, wherein a main control table (7) is embedded in the unmanned aerial vehicle body (1), a tire is configured on the unmanned aerial vehicle body (1), the main control table (7) comprises a flight control main control module, a sensor module, a power management module, a motor driving module, a steering engine driving module, a communication module and a positioning module, and a central processing unit is arranged in the flight control main control module.

Description

Vertical double-rotor helicopter type unmanned aerial vehicle Technical Field The invention relates to a rotor craft, in particular to the technical field of rotor unmanned helicopters, and specifically relates to a tandem double-rotor helicopter type unmanned plane. Background The tandem double-rotor unmanned helicopter is widely applied to the fields of logistics transportation, electric power inspection, fire rescue, geological exploration, military reconnaissance and the like due to the characteristics of compact structure, heavy load, high hover efficiency, no need of tail rotor and the like. Compared with a single-rotor unmanned aerial vehicle, the tandem double-rotor layout counteracts reactive torque through the reverse rotation of the front rotor and the rear rotor, has the advantages of wide gravity center range, good control stability, strong maneuvering performance and the like, and is particularly suitable for operation tasks under heavy load, long endurance and complex environments. At present, after the unmanned helicopter adopting a tandem double-rotor structure is equipped with a vector thrust rotor, vertical take-off and landing, rapid forward flight and attitude adjustment can be realized by changing the integral deflection angle of the rotor, and the maneuvering performance and the flight efficiency are obviously improved. However, in the actual flight process, when the deflection angle of the rotor wing changes, the rotor wing panel is simultaneously subjected to the combined airflow actions of ascending airflow, forward airflow and ambient side wind, complex pneumatic interference is formed between the rotor blade and incoming flow, and the rotor wing rotating shaft can bear obvious pneumatic alternating load and lateral shearing force. Under the combined motion of high-speed rotation and vector deflection, the aerodynamic resistance is increased, the mechanical loss is increased, the efficiency of a power system is reduced, the energy consumption is increased, the vibration, radial shaking and buffeting of a propeller disk of the rotor shaft are easily caused by uneven airflow, the control precision of the flight attitude is reduced, the vibration and load fluctuation can be transmitted to a fuselage structure step by step, the vibration and load fluctuation aggravate the vibration of the whole machine, the flight control stability margin can be exceeded in severe cases, the flight stability and safety are reduced, and even the risk of out-of-control crash exists. Therefore, a tandem double-rotor helicopter type unmanned aerial vehicle is provided to solve the above-mentioned problems. Disclosure of Invention (One) solving the technical problems Aiming at the defects of the prior art, the invention provides a tandem double-rotor helicopter, which solves the problems that when the angle of a rotor is frequently changed, a rotating shaft is easy to vibrate and shake due to complex pneumatic interference, so that the flight stability is reduced. (II) technical scheme In order to achieve the purpose, the vertical double-rotor helicopter type unmanned aerial vehicle comprises an unmanned aerial vehicle body, wherein an installation part is arranged on the unmanned aerial vehicle body, a vector adjusting part is arranged on the installation part, a rotor wing part is arranged on the vector adjusting part, a coupling part is arranged on the rotor wing part, a supporting part is further arranged on the vector adjusting part, the rotor wing part comprises a rotating shaft, the supporting part comprises a gas film bearing seat, the inner wall of the gas film bearing seat is attached with a gas-floating bearing, the coupling part comprises a wedge-shaped guide groove, the wedge-shaped guide groove is circumferentially arranged on the gas-floating bearing, a spiral guide groove is formed in the inner wall of the gas-floating bearing, the gas-floating bearing is movably sleeved on the outer wall of the rotating shaft, the inner wall of the gas-floating bearing is not contacted with the outer wall of the rotating shaft, damping fluid is filled between the spiral guide groove and the outer wall of the rotating shaft, and the vector adjusting part, the rotor wing part, the supporting part and the coupling part form a vertical rotor wing assembly. Preferably, the damping fluid is silicone oil, two ends of the inner wall of the air bearing are fixedly connected with flexible damping rings, and the inner wall of the flexible damping rings is in contact with the outer wall of the rotating shaft. Preferably, the rotor wing part further comprises a brushless motor, an output shaft of the brushless motor is fixedly connected with a rotating shaft, a hub is installed at one end, far away from the brushless motor, of the rotating shaft, blades are fixedly connected to the hub, and a first wedge block is connected to the hub in a surrounding mode. Preferably, the coupling part further comprises a second wedge