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CN-119975773-B - Thrust assembly and aircraft

CN119975773BCN 119975773 BCN119975773 BCN 119975773BCN-119975773-B

Abstract

The invention discloses a thrust component and an aircraft, and relates to the technical field of aircrafts. The motor of the thrust component comprises an outer rotor and an inner stator, a hub is fixedly connected with the outer rotor, the central axis of the hub is collinear with the central axis of the outer rotor, a linear driving component, a fixed end of the linear driving component is arranged in the hub and is fixedly connected with the inner stator, an output end of the linear driving component extends out of the hub along the direction far away from the motor, a variable-pitch pushing disc is positioned on one side of the hub away from the motor and is rotatably connected with the output end through a variable-pitch bearing so as to reciprocate along the axial direction of the hub under the driving of the linear driving component, one end of a connecting cable is connected with a connecting part of the fixed end, and the other end of the connecting cable penetrates through a through hole and extends into the inner stator to be connected with the control module. The variable-pitch pushing disc is arranged right above the propeller hub, so that the structural size of the variable-pitch pushing disc is not limited by the size of the propeller hub, and the structural strength of the variable-pitch pushing disc can be improved.

Inventors

  • GUO LIANG
  • LI QING
  • WANG WUXIAN
  • LI HANG

Assignees

  • 浙江吉利控股集团有限公司
  • 四川沃飞长空科技发展有限公司

Dates

Publication Date
20260508
Application Date
20241205

Claims (11)

  1. 1. A thrust assembly, comprising: An electric motor comprising an outer rotor; The paddle hub is fixedly connected with the outer rotor; a variable-pitch push disc, which is positioned on one side of the hub, which is away from the motor; At least two blades rotatably connected to the peripheral wall of the hub about the pitch axis of the blades and spaced apart in the circumferential direction of the hub, and The pitch-changing transmission assemblies are in one-to-one correspondence with at least two paddles, the pitch-changing transmission assemblies are respectively connected with the pitch-changing pushing disc and the paddles so that the pitch-changing pushing disc drives the paddles to swing through the pitch-changing transmission assemblies, the pitch-changing transmission assemblies comprise pitch-changing pins, the other ends of the pitch-changing pins are fixedly connected with the paddles so as to rotate around the pitch-changing axes of the paddles, and the distance between one ends of the pitch-changing pins and the plane where the pitch-changing pushing disc is located can be adjusted so as to realize fine adjustment of the attack angles of the paddles; The thrust assembly further includes: The at least two stabilizing assemblies are suitable for extending and contracting along the axial direction of the hub, one end of each stabilizing assembly is hinged to the variable-pitch pushing disc, the other end of each stabilizing assembly is hinged to the hub, and the at least two stabilizing assemblies are arranged at intervals along the circumferential direction of the variable-pitch pushing disc.
  2. 2. The thrust assembly of claim 1, wherein said pitch drive assembly further comprises a pitch link, one end of said pitch link being hinged to said pitch push plate, the other end of said pitch link being hinged to one end of said pitch pin, and the length of said pitch link being adjustable.
  3. 3. The thrust assembly of claim 2, wherein said pitch link comprises: A fixing section with two open ends in the axial direction, wherein an accommodating cavity communicated with both openings is defined in the fixing section; a first moving section, part of which extends into the accommodating cavity from an opening at one end of the fixed section and can move along the axial direction of the fixed section; a second moving section, part of which extends into the accommodating cavity from the opening at the other end of the fixed section and can move along the axial direction of the fixed section; The distance adjusting structure is partially arranged in the accommodating cavity and is respectively connected with the first moving section and the second moving section to adjust the distance between the first moving section and the second moving section; And the locking piece is matched with the fixed section and the distance adjusting structure respectively so as to lock the distance adjusting structure.
  4. 4. The thrust assembly of claim 3, wherein said pitch structure comprises: A knob portion rotatably provided to an outer peripheral wall of the fixed section; The matching part is arranged in the accommodating cavity and fixedly connected with the knob part, and a cam groove is formed in the section of one side of the matching part, which is away from the knob part; wherein, the first movable section includes a first protrusion that extends into the cam slot and slidably engages with the cam slot, and the second movable section includes a second protrusion that extends into the cam slot and slidably engages with the cam slot.
  5. 5. The thrust assembly of claim 3, wherein said first displacement section further comprises a first rod, a first elastic layer and a second rod connected in sequence along the axial direction of said fixed section, said first rod and/or said second rod being displaced within said fixed section along the axial direction of said fixed section, and/or The second moving section further comprises a third rod body, a second elastic layer and a fourth rod body which are sequentially connected along the axial direction of the fixed section, and the third rod body and/or the fourth rod body moves along the axial direction of the fixed section in the fixed section.
  6. 6. The thrust assembly of claim 1, wherein said pitch drive assembly further comprises: the rotating piece is rotatably connected to the peripheral side wall of the variable-pitch pushing disc, and the rotating axis of the rotating piece extends along the radial direction of the variable-pitch pushing disc; The connecting rod body, one end of the connecting rod body is rotatably connected with one side wall of the rotating piece, which is away from the variable-pitch pushing disc, and is eccentrically arranged compared with the rotating piece; and the locking piece is used for locking the rotating piece so as to prevent the rotating piece from rotating relative to the variable-pitch pushing disc.
  7. 7. The thrust assembly of claim 6, wherein said axial sidewall of said rotating member has threads and said locking member includes a threaded portion that mates with said rotating member, or The rotating piece and the locking piece form a worm and gear structure.
  8. 8. The thrust assembly of claim 1, wherein one end of said stabilizing assembly is hinged to an outer edge of said variable-pitch thrust plate, and/or At least two stabilizing components are uniformly arranged at intervals along the circumferential direction of the variable-pitch pushing disc and/or The number of the stabilizing components is consistent with the number of the paddles and corresponds to each other one by one.
  9. 9. The thrust assembly of claim 1, wherein said stabilizing assembly comprises: A first connecting arm, one end of which is hinged with the outer edge of the variable-pitch pushing disc, and The second link, the one end of second link with the other end of first link is articulated, the other end of second link with the oar hub is articulated, just first link with there is the contained angle between the second link.
  10. 10. The thrust assembly of claim 9, wherein said stabilizing assembly further comprises a resilient member disposed between said first connecting arm and said second connecting arm.
  11. 11. An aircraft, characterized in that, the aircraft comprises: Aircraft body, and At least one thrust assembly according to any one of claims 1 to 10, which is provided to the aircraft body, wherein the aircraft is an electric vertical takeoff and landing aircraft.

Description

Thrust assembly and aircraft The invention is a divisional application of patent application with the application date 2024, 12-month 05, the application number 202411775996.3 and the name of 'thrust component and aircraft'. Technical Field The invention relates to the technical field of aircrafts, in particular to a thrust component and an aircraft. Background For a helicopter, rotorcraft, or tiltrotor configuration eVTOL (ELECTRIC VERTICAL TAKE-off AND LANDING, electric vertical-landing aircraft), the propeller in its thrust assembly is the component that ultimately generates thrust or lift, and the electric motor drives the propeller in rotation. The pitch-variable propeller is a propeller capable of changing the blade angle through a pitch-variable assembly in flight. In the related art, the pitch-changing assembly comprises a pitch-changing push disc which is arranged in the hub and moves up and down along the axial direction of the main shaft of the propeller under the action of a pitch-changing motor. The variable-pitch pushing disc is respectively connected with a plurality of paddles through a plurality of connecting rods, so that the corresponding paddles are driven to swing relative to the hub through the connecting rods when the variable-pitch pushing disc moves up and down. However, because the space in the hub is limited, the size of the pitch-changing pushing disc is limited to influence the structural strength of the pitch-changing pushing disc, so that the stress of each pitch-changing transmission assembly is uneven, and the pitch-changing consistency of the blade is required to be improved. Disclosure of Invention The invention mainly aims to provide a thrust component and an aircraft, and aims to solve the technical problem that the pitch change consistency of blades is required to be improved due to the fact that a pitch change pushing disc in the related art is arranged in a hub. To achieve the above object, the present invention provides a thrust assembly, including: the electric engine comprises an outer rotor and an inner stator, the outer rotor is provided with a through hole, the central axis of the through hole is collinear with the central axis of the thrust component, and a control module is arranged in the inner stator; a paddle hub fixedly connected with the outer rotor; The fixed end of the linear driving assembly is arranged in the hub and is fixedly connected with the inner stator, and the output end of the linear driving assembly extends to the outside of the hub along the direction away from the motor; A variable-pitch thrust plate which is positioned on one side of the hub, which is far away from the motor, and is rotatably connected with the output end through a variable-pitch bearing so as to reciprocate along the axial direction of the hub under the drive of the linear driving assembly, and And one end of the connecting cable is connected with the connecting part of the fixed end, and the other end of the connecting cable penetrates through the through hole and extends into the inner stator to be connected with the control module. In one embodiment, the connecting portion is fixedly connected with the inner stator through the through hole. In one embodiment, the linear drive assembly includes: the pitch-changing motor is arranged in the hub, the pitch-changing motor is provided with a fixed end, and the pitch-changing motor is provided with a connecting part; The screw rod extends along the axial direction of the hub, one end of the screw rod is connected with the output shaft of the variable-pitch motor in the hub, and the other end of the screw rod extends to the outside of the hub along the direction away from the motor; a moving member threadedly coupled to a portion of the lead screw extending outside the hub to form an output end, and One end of the telescopic piece is fixedly connected with the body of the pitch-changing motor, the other end of the telescopic piece is fixedly connected with the moving piece, and the telescopic piece is suitable for stretching along the axial direction of the propeller hub. In one embodiment, the outer peripheral surface of one end of the moving piece, which is close to the hub, is provided with a radial bulge, and the variable-pitch bearing is arranged on one side, which is away from the hub, of the radial bulge; the thrust component further comprises an end cover, and the end cover is arranged on one side of the variable-pitch bearing, which is away from the radial protruding part; the variable-pitch pushing disc is sleeved on the radial outer side of the variable-pitch bearing, and the end cover is fixedly connected with the variable-pitch pushing disc. In one embodiment, the thrust assembly further comprises: at least two paddles rotatably connected to the peripheral wall of the hub around the pitch-changing axis of the paddles, and arranged at uniform intervals along the circumferential direction of the hub; The at least t