阅读说明：本技术 螺旋桨整体挥舞装置 (Integral propeller waving device ) 是由 江富余 于 2021-02-01 设计创作，主要内容包括：一种螺旋桨整体挥舞装置,螺旋桨与发动机一体安装在双边倾侧架或者单边倾侧架上,双边倾侧架的横向两端或者单边倾侧架横向一端设置由阻尼弹簧或阻尼减震橡胶构,阻尼弹簧或阻尼减震橡胶限制双边倾侧架或者单边倾侧架的倾侧程度,阻尼弹簧或阻尼减震橡胶安装在双边安装座或者单边安装座上,双边倾侧架中心纵向或者单边倾侧架的另一端设置转动轴,该转动轴两端安装在双边安装座的中部的轴承座或者单边安装座的另一端的轴承座上,使双边倾侧架或者单边倾侧架可以绕该转动轴转动,双边安装座或者单边安装座上设置螺丝孔,双边安装座或者单边安装座上通过螺丝安装在机体上,应用于减少螺旋桨前行桨叶和后行桨叶升力不对称程度。(A propeller integral waving device is characterized in that a propeller and an engine are integrally arranged on a double-side-inclined side frame or a single-side-inclined side frame, damping springs or damping rubber mechanisms are arranged at the two transverse ends of the double-side-inclined side frame or at one transverse end of the single-side-inclined side frame, the damping springs or the damping rubber mechanisms limit the inclining degree of the double-side-inclined side frame or the single-side-inclined side frame, the damping springs or the damping rubber mechanisms are arranged on a double-side mounting seat or a single-side mounting seat, a rotating shaft is arranged at the other longitudinal end of the center of the double-side-inclined side frame or at the other transverse end of the single-side-inclined side frame, two ends of the rotating shaft are arranged on a bearing seat in the middle of the double-side mounting seat or at the other transverse end of the single-side mounting seat, the double-inclined, the method is applied to reducing the asymmetric degree of the lifting force of the forward propeller blade and the backward propeller blade.)

1. A propeller integral waving device has two structural modes, the first mode is that blades of a propeller are connected to a hub of the propeller, the hub is connected to a propeller rotating main shaft, the propeller rotating main shaft is perpendicular to a horizontal plane, an engine drives the propeller rotating main shaft to drive the propeller to rotate, the propeller and the engine are integrally installed on double-side inclined side frames, the surfaces of the double-side inclined side frames are parallel to the rotating surface of the propeller, damping springs or damping rubber mechanisms are arranged at the two transverse ends of the double-side inclined side frames, the damping springs or damping rubber mechanisms limit the inclination degree of the double-side inclined side frames, the damping springs or damping rubber mechanisms are installed on double-side installation seats, rotating shafts are longitudinally arranged in the centers of the double-side inclined side frames, the two ends of each rotating shaft are installed on bearing seats in the middles of the double-side installation seats, the double-inclined side frames can rotate, the propeller, a rotating main shaft, an engine, a double-side-tilting frame, a damping spring or damping rubber, a rotating shaft and the double-side mounting seat form a propeller integral waving device, and the second type is that a blade of the propeller is connected to a hub of the propeller, the hub is connected to the rotating main shaft of the propeller, the rotating main shaft of the propeller is vertical to a horizontal plane, the engine drives the rotating main shaft of the propeller to drive the propeller to rotate, the propeller and the engine are integrally mounted on the single-side-tilting frame, the surface of the single-side-tilting frame is parallel to the rotating surface of the propeller, one transverse end of the single-side-tilting frame is provided with the damping spring or damping rubber, the damping spring or damping rubber limits the tilting degree of the single-side-tilting frame, the damping spring or damping rubber is mounted on one side of the single-side mounting seat, and the rotating shaft is, the bearing frame on the another side of unilateral mount pad is installed at this axis of rotation both ends, makes the unilateral side frame of heeling can rotate around this axis of rotation, sets up the screw hole on the unilateral mount pad, installs on the organism through the screw on the unilateral mount pad, and screw, rotatory main shaft, engine, unilateral side frame of heeling, damping spring or damping yielding rubber, axis of rotation, unilateral mount pad constitute the whole device of waving of screw, characterized by: screw, rotating spindle, engine, the bilateral frame that inclines incline inclines in the bilateral mount pad, and the screw antegrade paddle can upwards wave and the back-row paddle downwards wave, perhaps, screw, rotating spindle, engine, the unilateral frame that inclines in the unilateral mount pad incline inclines, and the screw antegrade paddle can upwards wave and the back-row paddle downwards wave.

Technical Field

The invention relates to a propeller integral flapping device of a multi-propeller helicopter, which can overcome the defects that when the multi-propeller helicopter flies forwards horizontally, the forward blades of the propellers accelerate, the lift force is increased, the backward blades decelerate the lift force is reduced, the rolling interference is caused, the alternating bending moment generated at the roots of the blades of the propellers is reduced, and the service life of the blades is prolonged because the rotating surfaces of the propellers of the multi-propeller helicopter are horizontally arranged.

Background

At present, the known method for overcoming the adverse effect of the asymmetrical phenomenon of the lift force generated by the acceleration of the forward moving blade and the deceleration of the backward moving blade of the propeller on the forward flying of the helicopter is to adopt the blade to wave the hinges, such as the hinged wave device of the tail propeller of the conventional single-rotor helicopter, the blade of the propeller is made to wave up and down by adopting the horizontal hinges, the lift force of the forward moving blade is reduced, the asymmetrical degree of the lift force generated by the acceleration of the forward moving blade and the deceleration of the backward moving blade of the propeller is reduced, but because the horizontal hinges rotate along with the blades, the structure of the propeller is complex, the rotational inertia of the hinge mechanism is increased, and the maintenance.

Disclosure of Invention

In order to simplify the structure of the propeller and reduce the rotational inertia of the propeller, the invention provides a propeller integral waving device which has a simple structure and reduces the rotational inertia of the propeller, can overcome the phenomenon of asymmetric lifting force generated by acceleration of forward blades and deceleration of backward blades of the propeller when a multi-propeller helicopter flies forward, enables the propeller to roll towards the backward blades, reduces the alternating bending moment of the root parts of the blades of the propeller and prolongs the service life of the blades.

The technical scheme adopted by the invention for solving the technical problem has two modes, the first mode is as follows: the propeller is integrally installed on a double-inclined side frame with the propeller rotating surface parallel to the propeller rotating surface, two transverse ends of the double-inclined side frame are provided with damping springs or damping shock-absorbing rubber mechanisms, the damping springs or the damping shock-absorbing rubber limit the inclining degree of the double-inclined side frame, the damping springs or the damping shock-absorbing rubber are installed on a double-side installation seat, a rotating shaft is longitudinally arranged at the center of the double-inclined side frame, two ends of the rotating shaft are installed on a bearing seat in the middle of the double-side installation seat, the double-inclined side frame can rotate around the rotating shaft, screw holes are formed in the double-side installation seat, and the double-side installation seat is installed on a machine body through screws.

The propeller integral flapping device comprises blades, a propeller hub, a rotating main shaft, an engine, double-side-inclined side frames, damping springs or damping rubber, a rotating shaft and double-side mounting seats.

The second method is as follows: the propeller is integrally arranged on a single-side-inclined side frame, the surface of the single-side-inclined side frame is parallel to the rotation surface of the propeller, one transverse end of the single-side-inclined side frame is provided with a damping spring or damping shock-absorbing rubber structure, the damping spring or damping shock-absorbing rubber limits the inclination degree of the single-side-inclined side frame, the damping spring or damping shock-absorbing rubber is arranged on one side of a single-side mounting seat, and the transverse other side of the single-side-inclined side frame is longitudinally provided with a rotating shaft, the two ends of the rotating shaft are arranged on the bearing seats on the other side of the unilateral mounting seat, so that the unilateral tipping frame can rotate around the rotating shaft, the unilateral mounting seat is provided with a screw hole, and the unilateral mounting seat is arranged on the machine body through a screw.

The propeller integral flapping device comprises blades, a propeller hub, a rotating main shaft, an engine, a single-side inclined side frame, a damping spring or damping rubber, a rotating shaft and a single-side mounting seat.

The whole theory of operation that waves the device of two kinds of screw that structural style is different is roughly the same, and the whole theory of operation that waves the device of the screw of first mode is:

it changes clockwise to establish the whole screw that waves the device of screw, and the whole rotatory plane level setting that waves the screw of device of screw is installed on many screw helicopters, and when many screw helicopters were in the state of hovering, the screw was whole to wave the preceding paddle of the screw of device and is the same with the rotational speed of the paddle that goes backward, and the screw is whole to wave both sides lift about the screw of device the same, and the screw is whole to wave the rotatory plane of the screw of device and keeps the level, and the both sides side frame that inclines keeps the level.

When the multi-propeller helicopter flies forward, the forward blades of the propellers of the propeller integral waving device are accelerated, the backward blades are decelerated, the forward blade lift force of the propellers of the propeller integral waving device is larger than the backward blade lift force, the propellers of the propeller integral waving device rotate clockwise, the forward acceleration is realized by the left blades, the backward deceleration is realized by the right blades, the left blade lift force of the propellers of the propeller integral waving device is larger than the right blade lift force of the propellers of the propeller integral waving device, the propeller rotating surface of the propeller integral waving device inclines rightwards, the propeller rotating main shaft is driven, the engine inclines rightwards, the double-side inclining frame rotates rightwards around the rotating shaft, the double-side inclining frame has limited inclining under the limitation of a damping spring or damping rubber, and the cross rolling interference is reduced because the double-side inclining frame inclines in the double-side mounting seat, in addition, because the preceding blades flap upwards, the air flow which is relatively downward is provided, the incidence angle of the preceding blades is reduced, the lift force is not increased, and the alternating bending moment generated at the root of the preceding blades is reduced.

The working principle of the propeller integral flapping device adopting the second mode is as follows:

it changes clockwise to establish the whole screw that waves the device of screw, and the whole rotatory plane level setting that waves the screw of device of screw is installed on many screw helicopters, and when many screw helicopters were in the state of hovering, the screw was whole to wave the preceding paddle of the screw of device and is the same with the rotational speed of the paddle that goes backward, and the screw is whole to wave both sides lift about the screw of device the same, and the screw is whole to wave the rotatory plane of the screw of device and keeps the level, and unilateral inclining side frame keeps the level.

When the multi-propeller helicopter flies forward, the forward moving blades of the propeller integral waving device are accelerated, the backward moving blades are decelerated, the forward moving blade lift force of the propeller integral waving device is greater than the lift force of the backward moving blades, the propeller of the propeller integral waving device rotates clockwise, the forward moving speed of the propeller integral waving device is accelerated by the left blade, the backward moving speed of the propeller integral waving device is decelerated by the right blade, the left lift force of the propeller integral waving device is greater than the right lift force of the propeller integral waving device, the propeller rotating surface of the propeller integral waving device inclines rightwards to drive the propeller rotating main shaft and the engine to incline rightwards, the unilateral inclining frame rotates rightwards around the rotating shaft, the unilateral inclining frame has limited inclining under the limitation of a damping spring or damping rubber, and the unilateral inclining frame inclines in the, in addition, because the preceding blades flap upwards, the air flow which is relatively downward is provided, the incidence angle of the preceding blades is reduced, the lift force is not increased, and the alternating bending moment generated at the root of the preceding blades is reduced.

For convenience of drawing, the damping spring or the damping cushion rubber takes the damping spring as an example.

The propeller integral waving device has the advantages that the propeller integral waving device is adopted, forward blades of the propeller are allowed to wave upwards, the forward blades with increased lift force have relatively downward airflow, the attack angle of the forward blades is reduced, the lift force is not increased, meanwhile, backward blades wave downwards, the backward blades have relatively upward airflow, the attack angle of the backward blades is increased, the lift force is not reduced, alternating bending moment and rolling interference generated at the roots of the forward blades are reduced, the propeller integral waving device is not arranged on the blades and does not rotate along with the propeller blades, the rotating inertia is reduced, and the propeller integral waving device has the advantages of simple structure and convenience in maintenance.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic view of the overall propeller flapping apparatus of the present invention with the propellers of the double-sidetracked side frames rotating clockwise.

FIG. 2 is a schematic view of the forward flying tilt principle of the propeller integrated flapping apparatus with the propellers of the double-inclined side frames rotating clockwise according to the invention.

FIG. 3 is a schematic view of the propeller flapping apparatus of the present invention with the propellers mounted on the single-sided-tilting side frames rotating clockwise.

FIG. 4 is a schematic diagram of the forward flying tilting principle of the propeller integral flapping device with the propellers of the single-side-tilting side frame rotating clockwise.

In the figure, 1, a propeller, 2, a propeller hub, 3, a propeller rotating main shaft, 4, an engine, 5, a double-side-inclining side frame, 6, a double-side mounting seat, 7, a bearing seat, 8, a rotating shaft, 9, a damping spring, 10, a screw hole connected with a machine body, 11, a horizontal plane and alpha, and the included angle between a blade and the horizontal plane (a forward blade swings upwards).

Detailed Description

In the embodiment shown in fig. 1, the blades of a propeller 1 are connected to a hub 2 of the propeller, the hub 2 is connected to a propeller rotating main shaft 3, the propeller rotating main shaft 3 is perpendicular to the horizontal plane, an engine 4 drives the propeller rotating main shaft 3 to drive the propeller 1 to rotate, the propeller 1 and the engine 4 are integrally installed on a double-inclined side frame 5, the surface of the double-inclined side frame 5 is parallel to the rotating surface of the propeller rotating main shaft 1, damping springs 9 are arranged at the two transverse ends of the double-inclined side frame 5, the damping springs 9 limit the inclination degree of the double-inclined side frame 5, the damping springs 9 are installed on a double-inclined mounting seat 6, a rotating shaft 8 is longitudinally arranged in the center of the double-inclined side frame 5, two ends of the rotating shaft 8 are installed on a bearing seat 7 in the middle of the double-inclined mounting seat 6, the double-inclined side frame 5 can rotate around the rotating.

It changes clockwise to establish the whole screw that waves the device of screw 1, and the whole rotatory plane level setting that waves the screw 1 of device of screw is installed on many screw helicopters, is in when hovering state when many screw helicopters, and the whole antecedent paddle that waves the screw 1 of device of screw is the same with the rotational speed of the back paddle, and the whole screw that waves the device of screw 1 left and right sides lift is the same, and the whole rotatory plane that waves the screw 1 of device of screw keeps the level, and two side frame 5 that incline keep the level.

When the multi-propeller helicopter flies forward, referring to fig. 2, the forward moving blades of the propeller 1 of the propeller integral waving device are accelerated and the backward moving blades are decelerated, the forward moving blade lift force of the propeller 1 of the propeller integral waving device is greater than the lift force of the backward moving blades, the propeller 1 of the propeller integral waving device rotates clockwise, the forward moving blade of the propeller integral waving device is accelerated and the backward moving blade of the propeller integral waving device is decelerated, the left lift force of the propeller 1 of the propeller integral waving device is greater than the right lift force of the propeller 1 of the propeller integral waving device, the rotating surface of the propeller 1 of the propeller integral waving device inclines rightwards, the propeller rotating main shaft 3 and the engine 4 incline rightwards, the double-side inclined side frames 5 rotate rightwards around the rotating shaft 8, the double-side inclined side frames 5 incline limitedly under the limitation of the damping springs 9, and the double-inclined side frames 5, the roll interference is reduced, in addition, because the preceding blade upwards waves alpha degree, the relative downward airflow is provided, the attack angle of the preceding blade is reduced, the lift force is not increased, the alternating bending moment generated by the root of the preceding blade of the propeller 1 is reduced, and simultaneously, because the backward blade downwards waves, the relative upward airflow is provided, the attack angle of the backward blade is increased, the lift force is not reduced, the asymmetric lift force of the left blade and the right blade is reduced, and the roll interference is further reduced.

In the embodiment shown in fig. 3, the blades of the propeller 1 are connected to the hub 2 of the propeller, the hub 2 is connected to the propeller rotating main shaft 3, the propeller rotating main shaft 3 is perpendicular to the horizontal plane, the engine 4 drives the propeller rotating main shaft 3 to drive the propeller 1 to rotate, the propeller 1 and the engine 4 are integrally installed on the single-side inclined side frame 52, the surface of the single-side inclined side frame 52 is parallel to the rotating surface of the propeller rotating main shaft 1, one transverse end of the single-side inclined side frame 52 is provided with a damping spring 9, the damping spring 9 limits the tilting degree of the single-side inclined side frame 52, the damping spring 9 is installed on one transverse end of the single-side installation seat 62, the other transverse end of the single-side inclined side frame 52 is longitudinally provided with a rotating shaft 8, two ends of the rotating shaft 8 are installed on the bearing seat 7 at the other transverse end of, the single-side mounting seat 62 is mounted on the machine body through the screw hole 10.

It turns clockwise to establish the whole screw 1 that waves the device of screw, and the whole rotatory plane level setting that waves the screw 1 of device of screw is installed on many screw helicopters, is in when hovering state when many screw helicopters, and the whole screw that waves the preceding paddle of screw 1 of device is the same with the rotational speed of the back paddle, and the whole screw that waves the device of screw 1 left and right sides lift is the same, and the whole rotatory plane that waves the screw 1 of device of screw keeps the level, and unilateral slope side bearer 52 keeps the level.

When the multi-propeller helicopter flies forward, referring to fig. 4, the forward moving blades of the propeller 1 of the propeller integral flapping device are accelerated, the backward moving blades are decelerated, the forward moving blade lift force of the propeller 1 of the propeller integral flapping device is larger than the lift force of the backward moving blades, the propeller 1 of the propeller integral flapping device rotates clockwise, the forward moving blade of the propeller integral flapping device advances and decelerates, the backward moving blade of the propeller integral flapping device decelerates, the left lift force of the propeller 1 of the propeller integral flapping device is larger than the right lift force of the propeller 1 of the propeller integral flapping device, the rotating surface of the propeller 1 of the propeller integral flapping device inclines rightwards, the propeller rotating main shaft 3 and the engine 4 incline rightwards, the single-side inclined side frame 52 rotates rightwards around the rotating shaft 8, the single-side inclined side frame 52 inclines limitedly under the limitation of the damping spring 9, and the single-side inclined side frame, the roll interference is reduced, in addition, because the preceding blade upwards waves alpha degree, the relative downward airflow is provided, the attack angle of the preceding blade is reduced, the lift force is not increased, the alternating bending moment generated by the root of the preceding blade of the propeller 1 is reduced, and simultaneously, because the backward blade downwards waves, the relative upward airflow is provided, the attack angle of the backward blade is increased, the lift force is not reduced, the asymmetric lift force of the left blade and the right blade is reduced, and the roll interference is further reduced.