CN214875536U

CN214875536U - Bearingless variable-pitch rotor head suitable for small unmanned helicopter

Info

Publication number: CN214875536U
Application number: CN202121501844.6U
Authority: CN
Inventors: 马斌; 高依阳
Original assignee: Beijing Shenhang Technology Co ltd
Current assignee: Beijing Shenhang Technology Co ltd
Priority date: 2021-07-02
Filing date: 2021-07-02
Publication date: 2021-11-26
Anticipated expiration: 2031-07-02

Abstract

The utility model discloses a but does not have bearing displacement rotor head suitable for small-size unmanned helicopter, including main shaft and brushless motor, wherein brushless motor is installed at the main shaft top, and brushless motor's bottom is connected and is installed rotor mechanism, and the main shaft surface is located rotor mechanism below and installs the inclinator, and the inclinator is connected with rotor mechanism, and the inclinator below is provided with the steering wheel linkage, and the steering wheel linkage is connected with the inclinator. The utility model discloses a brushless motor control rotor mechanism carries out periodic displacement and collective control, and the every single move of cooperation control rotor mechanism and the gesture of roll through steering wheel connecting rod group and inclinator adopt elasticity even piece to replace the bearing that the thick liquid pressed from both sides, have simplified the structure, have reduced the vertical height, adopt the constant speed rotor to guarantee that attitude control power is invariable, can reach the wind-resistant ability and the flight mobility of traditional helicopter grade from this.

Description

Bearingless variable-pitch rotor head suitable for small unmanned helicopter

Technical Field

The utility model relates to a helicopter steering wheel linkage technical field specifically is a but, does not have bearing displacement rotor head suitable for small-size unmanned helicopter.

Background

The control mode of the traditional coaxial helicopter is divided into a full differential mode that the total distance and the periodic variable distance of an upper propeller disk and a lower propeller disk are respectively controlled by three steering engines, the full differential mode that the total distance difference of the upper layer and the lower layer controls the course is connected with an upper inclined disk and a lower inclined disk by a connecting rod, the lower layer three steering engines control the total distance and the periodic variable distance of the upper layer and the lower layer, and a fourth steering engine enables the total distance of the lower inclined disk to independently change and is a semi-differential mode, wherein the full differential mode has relatively simple mechanical structure, depends on the reliability of an electric control system, has few semi-differential electric control parts, but has very complex mechanical connecting rod structure, is an internal and external driving shaft structure, has large miniaturization difficulty, most of barrel type coaxiality appearing in the current market is an upper lift force propeller and a lower periodic variable distance steering engine 2 mode developed from a toy remote control helicopter, and has the advantages of simple structure and the problem that an upper rotor wing only generates lift force and can not control the attitude, the course is controlled by the difference of the rotating speeds of the upper and lower propellers, so that the wind resistance is poor and the forward flying speed is low in the outdoor environment.

To this end, we propose a bearingless variable pitch rotor head suitable for small unmanned helicopters.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a but, no bearing displacement rotor head suitable for small-size unmanned helicopter to solve the problem that provides among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a but does not have bearing displacement rotor head suitable for small-size unmanned helicopter, includes main shaft and brushless motor, brushless motor is installed at the main shaft top, and brushless motor's bottom is connected installs rotor mechanism, the main shaft surface is located rotor mechanism below and installs the inclinator, and the inclinator is connected with rotor mechanism, the inclinator below is provided with the steering wheel linkage, and the steering wheel linkage is connected with the inclinator.

Preferably, the steering engine connecting rod group comprises a steering engine, a steering engine rocker arm and a fixed ring connecting rod, the steering engine is symmetrically arranged, the steering engine rocker arm is fixedly connected to an output shaft of the steering engine, the fixed ring connecting rod is installed at the end part of the steering engine rocker arm in a rotating mode, and the inclinator comprises a moving ring, a fixed ring, a moving ring ball head, a fixed ring ball head and a paddle clamp variable-pitch connecting rod.

Preferably, the movable ring is connected with the main shaft in a rotating mode, the movable ring is installed with an immovable ring in an external rotating mode, an immovable ring ball head is fixed on the surface of the immovable ring, an immovable ring connecting rod is connected with the immovable ring ball head in a rotating mode, a movable ring ball head is symmetrically fixed on the outer surface of the movable ring, a paddle clamp variable-pitch connecting rod is connected with the movable ring ball head in a rotating mode, and the rotor wing mechanism comprises a paddle, a paddle clamp A, an elastic connecting piece, a paddle clamp B, a variable-pitch rocker arm and a paddle hub middle link.

Preferably, the movable ring comprises a ball bearing and a tilting disk movable ring, the tilting disk movable ring is sleeved outside the ball bearing, and the ball bearing is rotatably connected with the main shaft.

Preferably, the ball bearing and the tilting disk moving coil are in clearance fit.

Preferably, the outer wall cover of main shaft is equipped with the propeller hub antithetical couplet, and the propeller hub antithetical couplet is connected with brushless motor's output shaft fixed, the bottom surface of propeller hub antithetical couplet is fixed with elasticity even piece, the both ends symmetry of elasticity even piece is fixed with oar and presss from both sides B, the connecting plate bottom is fixed with the variable pitch rocking arm, and variable pitch rocking arm and oar press from both sides variable pitch connecting rod and rotate and be connected, the tip that the oar pressed from both sides B rotates installs oar and presss from both sides A, and the tip that the oar pressed from both sides A rotates and installs the paddle.

Preferably, the limiting shafts are symmetrically fixed to the bottom surface of the hub middle joint, and the telescopic ends of the limiting shafts are fixedly connected with the paddle clamp B.

Preferably, the moving coil ball head and the paddle clamp variable-pitch connecting rod, and the fixed coil ball head and the fixed coil connecting rod are rotationally connected through a ball shaft.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a brushless motor control rotor mechanism carries out periodic displacement and collective control, and the every single move of cooperation control rotor mechanism and the gesture of roll through steering wheel connecting rod group and inclinator adopt elasticity even piece to replace the bearing that the thick liquid pressed from both sides, have simplified the structure, have reduced the vertical height, adopt the constant speed rotor to guarantee that attitude control power is invariable, can reach the wind-resistant ability and the flight mobility of traditional helicopter grade from this.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is one of the structural schematic diagrams of the rotor wing mechanism of the present invention;

fig. 3 is a second schematic structural view of the rotor mechanism of the present invention;

FIG. 4 is a schematic view of the structure of the recliner and the steering gear linkage of the present invention;

fig. 5 is a schematic view of the moving coil structure of the present invention.

In the figure: 1. a main shaft; 2. a rotor mechanism; 21. a paddle; 22. a paddle clamp A; 23. an elastic connecting piece; 24. a paddle clamp B; 25. a limiting shaft; 26. a pitch-variable rocker arm; 27. a hub middle connection; 3. a tilter; 31. moving coils; 311. a ball bearing; 312. a tilting disk moving coil; 32. a stationary coil; 33. a moving coil ball head; 34. a coil head is not moved; 35. a paddle clamp pitch-variable connecting rod; 4. a steering engine connecting rod group; 41. a steering engine; 42. a steering engine rocker arm; 43. a stationary ring connecting rod; 5. a brushless motor.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, a bearing-free variable-pitch rotor head suitable for a small-sized unmanned helicopter in the figure comprises a main shaft 1 and a brushless motor 5, wherein the brushless motor 5 is installed at the top of the main shaft 1, a rotor wing mechanism 2 is installed at the bottom of the brushless motor 5 in a connected manner, an inclinometer 3 is installed on the surface of the main shaft 1 below the rotor wing mechanism 2, the inclinometer 3 is connected with the rotor wing mechanism 2, a steering engine connecting rod group 4 is arranged below the inclinometer 3, and the steering engine connecting rod group 4 is connected with the inclinometer 3.

The rotor wing mechanism 2 is controlled by the brushless motor 5 to carry out periodic pitch change and total pitch control, and the pitching of the rotor wing mechanism 2 and the attitude of a rolling shaft are controlled by the cooperation of the steering engine connecting rod group 4 and the inclinator 3.

Referring to fig. 4, the steering engine linkage group 4 includes a steering engine 41, a steering engine rocker arm 42 and a fixed ring connecting rod 43, the steering engine 41 is symmetrically arranged, an output shaft of the steering engine 41 is fixedly connected with the steering engine rocker arm 42, a fixed ring connecting rod 43 is rotatably mounted at an end of the steering engine rocker arm 42, the inclinator 3 includes a moving ring 31, a fixed ring 32, a moving ring ball 33, a fixed ring ball 34 and a paddle clamp variable-pitch connecting rod 35, the moving ring 31 is rotatably connected with the main shaft 1, the fixed ring 32 is rotatably mounted outside the moving ring 31, the fixed ring ball 34 is fixed on the surface of the fixed ring 32, the fixed ring connecting rod 43 is rotatably connected with the fixed ring ball 34, the moving ring ball 33 is symmetrically fixed on the outer surface of the moving ring 31, and the paddle clamp variable-pitch connecting rod 35 is rotatably connected with the moving ring ball 33.

The steering engine 41 is started to drive the steering engine rocker arm 42 to rotate, and the ball head 34 of the fixed ring, the fixed ring 32 and the moving ring 31 are laterally inclined through the linkage of the connecting rod 43 of the fixed ring, so that the paddle clamp variable-pitch connecting rod 35 is linked with the rotor mechanism 2 to control the postures of pitching and rolling shafts.

Referring to fig. 5, the moving coil 31 includes a ball bearing 311 and a tilting disk moving coil 312, the tilting disk moving coil 312 is sleeved outside the ball bearing 311, and the ball bearing 311 is rotatably connected to the main shaft 1.

In addition, the ball bearing 311 and the tilting disk moving coil 312 are in clearance fit, and a space is reserved for the offset of the ball bearing 311 and the tilting disk moving coil 312.

Referring to fig. 2 and 3, the rotor mechanism 2 includes a blade 21, a blade clamp a 22, an elastic connecting piece 23, a blade clamp B24, a pitch-variable rocker 26 and a hub middle link 27, the outer wall of the main shaft 1 is sleeved with the hub middle link 27, the hub middle link 27 is fixedly connected with an output shaft of the brushless motor 5, the elastic connecting piece 23 is fixed on the bottom surface of the hub middle link 27, the blade clamps B24 are symmetrically fixed on two ends of the elastic connecting piece 23, the pitch-variable rocker 26 is fixed on the bottom of the blade clamp B24, the pitch-variable rocker 26 is rotatably connected with a blade clamp pitch-variable connecting rod 35, the blade clamp a 22 is rotatably installed on the end of the blade clamp B24, and the blade 21 is rotatably installed on the end of the blade clamp a 22.

Through the pulling of the variable pitch rocker 26 and the torsional deformation of the elastic connecting piece 23, the paddle clamp B24 drives the rotating paddle clamp A22 and the paddle 21 to perform the attitude adjustment control of the pitching and the rolling shaft.

In addition, the limiting shafts 25 are symmetrically fixed on the bottom surface of the hub middle connector 27, the telescopic ends of the limiting shafts 25 are fixedly connected with the paddle clamp B24, and the connection of the limiting shafts 25 enables the space control and the torsion adjustment of the blades 21 to be more stable.

Referring to fig. 4, the moving coil ball head 33 is rotatably connected with the paddle clamp variable pitch connecting rod 35, the fixed coil ball head 34 is rotatably connected with the fixed coil connecting rod 43 through ball shafts, and the omni-directional unlimited rotation is more convenient for the tilt transmission.

The working principle is as follows: control rotor mechanism 2 through brushless motor 5 and carry out periodic displacement and collective control, through the every single move of steering wheel linkage 4 and the cooperation control rotor mechanism 2 of clinometer 3 and the gesture of roll shaft, adopt elasticity even piece 23 to replace the bearing of thick liquid clamp, simplified the structure, reduced the vertical height, adopt the constant speed rotor to guarantee that the attitude control power is invariable, can reach the wind-resistant ability and the flight mobility of traditional helicopter grade from this.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a but, bearing displacement rotor head suitable for small-size unmanned helicopter, includes main shaft (1) and brushless motor (5), its characterized in that: brushless motor (5) are installed at main shaft (1) top, and the bottom connection of brushless motor (5) installs rotor mechanism (2), main shaft (1) surface is located rotor mechanism (2) below and installs inclinator (3), and inclinator (3) are connected with rotor mechanism (2), inclinator (3) below is provided with steering wheel linkage (4), and steering wheel linkage (4) are connected with inclinator (3).

2. A bearingless variable-pitch rotor head suitable for use in a small-sized unmanned helicopter according to claim 1, wherein: steering wheel connecting rod group (4) are including steering wheel (41), steering wheel rocking arm (42) and motionless circle connecting rod (43), steering wheel (41) are the symmetry and set up, and the output shaft fixedly connected with steering wheel rocking arm (42) of steering wheel (41), steering wheel rocking arm (42) tip rotates and installs motionless circle connecting rod (43), inclinator (3) are including moving coil (31), motionless circle (32), moving coil bulb (33), motionless circle bulb (34) and oar clamp displacement connecting rod (35).

3. A bearingless variable-pitch rotor head suitable for use in a small-sized unmanned helicopter according to claim 2, wherein: the movable ring (31) is connected with the main shaft (1) in a rotating mode, the movable ring (32) is installed in the movable ring (31) in an external rotating mode, the surface of the movable ring (32) is fixed with a movable ring ball head (34), a movable ring connecting rod (43) is connected with the movable ring ball head (34) in a rotating mode, the movable ring ball head (33) is fixed on the outer surface of the movable ring (31) in a symmetrical mode, the movable ring ball head (33) is connected with a paddle clamp variable-pitch connecting rod (35) in a rotating mode, and the rotor wing mechanism (2) comprises a paddle (21), a paddle clamp A (22), an elastic connecting piece (23), a paddle clamp B (24), a variable-pitch rocker arm (26) and a paddle hub middle linkage (27).

4. A bearingless variable-pitch rotor head suitable for use in a small-sized unmanned helicopter according to claim 3, wherein: the moving coil (31) comprises a ball bearing (311) and a tilting disk moving coil (312), the tilting disk moving coil (312) is sleeved outside the ball bearing (311), and the ball bearing (311) is rotatably connected with the main shaft (1).

5. A bearingless variable-pitch rotor head suitable for small-sized unmanned helicopters, according to claim 4, wherein: the ball bearing (311) is in clearance fit with the tilting disk moving coil (312).

6. A bearingless variable-pitch rotor head suitable for use in a small-sized unmanned helicopter according to claim 3, wherein: the outer wall cover of main shaft (1) is equipped with in the propeller hub allies oneself with (27), and allies oneself with in the propeller hub (27) and brushless motor (5) output shaft fixed connection, the bottom surface of alliing oneself with (27) is fixed with elasticity even piece (23) in the propeller hub, the both ends symmetry of elasticity even piece (23) is fixed with oar and presss from both sides B (24), oar presss from both sides B (24) bottom and is fixed with displacement rocking arm (26), and displacement rocking arm (26) and oar press from both sides displacement connecting rod (35) and rotate and be connected, the tip that the oar pressed from both sides B (24) rotates installs oar and presss from both sides A (22), and the tip that the oar pressed from both sides A (22) rotates and installs paddle (21).

7. A bearingless variable-pitch rotor head suitable for small-sized unmanned helicopters, according to claim 6, wherein: limiting shafts (25) are symmetrically fixed to the bottom surface of the hub middle connector (27), and the telescopic ends of the limiting shafts (25) are fixedly connected with the paddle clamps B (24).

8. A bearingless variable-pitch rotor head suitable for use in a small-sized unmanned helicopter according to claim 2, wherein: the moving coil ball head (33) is rotatably connected with the paddle clamp variable-pitch connecting rod (35), the fixed coil ball head (34) is rotatably connected with the fixed coil connecting rod (43) through a ball shaft.