阅读说明：本技术 一种旋翼无人机的螺旋桨基座及旋翼无人机 (Rotor unmanned aerial vehicle's screw base and rotor unmanned aerial vehicle ) 是由 常宗豪 陈文欣 金滨 伊丽丽 于 2020-05-08 设计创作，主要内容包括：本发明公开一种旋翼无人机的螺旋桨基座,包括底座以及设置在底座上的摆动缓冲座,所述底座与旋翼无人机的转动电机的主轴连接；无人机的螺旋桨设置在所述摆动缓冲座上,所述摆动缓冲座活动连接在底座上且摆动缓冲座可相对所述底座作摆动运动,所述摆动缓冲座的摆动轴线与无人机的螺旋桨转动时所在的平面平行,所述摆动缓冲座的转动轴线与所述底座的转动轴线重合,所述摆动缓冲座的摆动轴线与所述转动轴线相交。本发明能够在无人机偏转时降低螺旋桨的振动和负担,从而减少在无人机偏转时对螺旋桨的冲击和磨损,有利于提高无人机偏转时的稳定性和延长螺旋桨寿命。(The invention discloses a propeller base of a rotor unmanned aerial vehicle, which comprises a base and a swing buffer seat arranged on the base, wherein the base is connected with a main shaft of a rotating motor of the rotor unmanned aerial vehicle; unmanned aerial vehicle's screw sets up on the swing cushion seat, swing cushion seat swing joint just the swing cushion seat can be relative on the base swing motion is made to the base, the plane at place when the swing axis of swing cushion seat and unmanned aerial vehicle's screw rotate is parallel, the rotation axis of swing cushion seat with the rotation axis coincidence of base, the swing axis of swing cushion seat with the rotation axis is crossing. The invention can reduce the vibration and the burden of the propeller when the unmanned aerial vehicle deflects, thereby reducing the impact and the abrasion to the propeller when the unmanned aerial vehicle deflects, and being beneficial to improving the stability when the unmanned aerial vehicle deflects and prolonging the service life of the propeller.)

1. A propeller base of a rotor wing unmanned aerial vehicle is characterized by comprising a base and a swing buffer seat arranged on the base, wherein the base is connected with a main shaft of a rotating motor of the rotor wing unmanned aerial vehicle; wherein, unmanned aerial vehicle's screw sets up on the swing buffer seat, swing buffer seat swing joint just the swing buffer seat can be relative on the base swing motion is made to the base, the plane at place when the swing axis of swing buffer seat and unmanned aerial vehicle's screw rotate is parallel, the axis of rotation of swing buffer seat with the axis of rotation coincidence of base, the swing axis of swing buffer seat with the axis of rotation is crossing.

2. The rotor base of a rotary-wing drone of claim 1, wherein the angle between the oscillation axis and the axis of the propeller length direction is acute.

3. The rotary-wing drone propeller base of claim 2, wherein the swing axis is at a 45 degree angle to the propeller axis.

4. The propeller base of a rotary-wing unmanned aerial vehicle according to any one of claims 1 to 3, wherein the base comprises a bottom plate and a connecting piece, the connecting piece is arranged on the bottom plate, the bottom plate is connected with a main shaft of a rotating motor of the unmanned aerial vehicle, the connecting piece is vertically arranged, and a connecting through hole is arranged on the connecting piece; the swing buffer seat is provided with a connecting bearing, and the connecting bearing and the connecting piece are installed together through a rotating shaft.

5. The rotor base of a rotary-wing drone of claim 4, wherein the connection piece includes two oppositely disposed connection plates, and the connection through-holes are provided on both of the two connection plates.

6. The rotor base of a rotary-wing drone of claim 5, wherein the swing snubber mount has a bearing mount on which the connection bearing is mounted.

7. The rotor base of a rotary-wing drone of claim 6, wherein the oscillation dampening base is provided with two propellers, one on each side of the oscillation dampening base.

8. The rotor unmanned aerial vehicle's screw base of claim 7, wherein the swing buffing pad includes an upper splint and a lower splint, both ends of the upper splint and the lower splint are fixed through the spliced pole, and the bearing mount pad is provided at the middle of the upper splint and the lower splint, the bottom of the lower splint is provided with an avoidance hole for avoiding the connecting piece, and the two screws are respectively fixedly connected on the spliced pole at both ends of the upper splint and the lower splint.

9. A rotorcraft, comprising the propeller base of claims 1-8.

Technical Field

The invention relates to a rotor unmanned aerial vehicle, in particular to a propeller base of the rotor unmanned aerial vehicle.

Background

Along with the progress of science and technology, unmanned aerial vehicle's application is more and more extensive, including unmanned aerial vehicle inspection of patrolling a line, aviation pesticide spraying operation and taking photo by plane etc.. Because rotor unmanned aerial vehicle is convenient for control, take off and stop the landing convenience, consequently rotor unmanned aerial vehicle popularity is higher. The rotor wing unmanned aerial vehicle drives a rotor wing to rotate through a motor, so that lifting thrust is generated, and lifting and flying of the unmanned aerial vehicle are realized; however, at rotor unmanned aerial vehicle flight in-process, unmanned aerial vehicle often need carry on by a wide margin turn to or take place to deflect in the twinkling of an eye in the air is flowed indiscriminately, can cause certain impact and wearing and tearing to unmanned aerial vehicle's screw this moment, can increase the burden of screw when turning to action by a wide margin, reduce the life of rotor unmanned aerial vehicle screw.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a propeller base of a rotor unmanned aerial vehicle, which can reduce the vibration and the burden of a propeller when the unmanned aerial vehicle deflects, thereby reducing the impact and the abrasion to the propeller when the unmanned aerial vehicle deflects, being beneficial to improving the stability when the unmanned aerial vehicle deflects and prolonging the service life of the propeller.

Another object of the present invention is to provide a rotary-wing drone.

The purpose of the invention is realized by the following technical scheme:

a propeller base of a rotor wing unmanned aerial vehicle is characterized by comprising a base and a swing buffer seat arranged on the base, wherein the base is connected with a main shaft of a rotating motor of the rotor wing unmanned aerial vehicle; wherein, unmanned aerial vehicle's screw sets up on the swing buffer seat, swing buffer seat swing joint just the swing buffer seat can be relative on the base swing motion is made to the base, the plane at place when the swing axis of swing buffer seat and unmanned aerial vehicle's screw rotate is parallel, the axis of rotation of swing buffer seat with the axis of rotation coincidence of base, the swing axis of swing buffer seat with the axis of rotation is crossing.

The operating principle of the propeller base of the rotor unmanned aerial vehicle is as follows:

when the unmanned aerial vehicle encounters air turbulence or active control instant deflection in the flying process, the body of the unmanned aerial vehicle inclines in a short time, and the base is connected with the main shaft of the rotating motor of the unmanned aerial vehicle, so that the base can also generate abrupt change of the posture along with the body of the unmanned aerial vehicle; at the moment, the swing buffer seat is movably connected with the base, and the swing axis of the swing buffer seat is parallel to the plane of the propeller during rotation, so that after the base changes suddenly along with the unmanned aerial vehicle body, the swing buffer seat swings relative to the base, and the propeller on the swing buffer seat still keeps a horizontal posture (consistent with the posture of the unmanned aerial vehicle body before deflection), so that the propeller of the unmanned aerial vehicle does not change suddenly along with the posture of the unmanned aerial vehicle body, and the abrasion and impact on the propeller are reduced; then, because unmanned aerial vehicle's rotation motor drives the base continuously and rotates, consequently set up the screw on the swing cushion seat and keep rotating, under the effect of centrifugal force, swing cushion seat and screw round swing axis swings, is parallel with the unmanned aerial vehicle fuselage gradually, finally accomplishes whole self accommodation process, realizes the gesture buffer change of screw.

In a preferred embodiment of the present invention, an angle between the swing axis and an axis of the propeller in the length direction is an acute angle. Thereby can be convenient for the screw swing to realize the buffering, be favorable to alleviateing impact and the burden to the screw, effectively protect the screw.

Preferably, the angle between the swing axis and the propeller axis is 45 degrees.

According to a preferable scheme of the invention, the base comprises a bottom plate and a connecting piece, the connecting piece is arranged on the bottom plate, the bottom plate is connected with a main shaft of a rotating motor of the unmanned aerial vehicle, the connecting piece is vertically arranged, and a connecting through hole is formed in the connecting piece; the swing buffer seat is provided with a connecting bearing, and the connecting bearing and the connecting piece are installed together through a rotating shaft.

Preferably, the connecting piece comprises two oppositely arranged connecting plates, and the two connecting plates are provided with the connecting through holes.

Preferably, a bearing mounting seat is arranged on the swing buffer seat, and the connecting bearing is mounted on the bearing mounting seat.

According to a preferable scheme of the invention, two propellers are arranged on the swing buffer seat and are respectively arranged on two sides of the swing buffer seat.

According to a preferable scheme of the invention, the swing buffer seat comprises an upper clamping plate and a lower clamping plate, two ends of the upper clamping plate and two ends of the lower clamping plate are fixed through connecting columns, the bearing mounting seat is arranged in the middle of the upper clamping plate and the lower clamping plate, an avoiding hole for avoiding the connecting piece is formed in the bottom of the lower clamping plate, and the two propellers are respectively and fixedly connected to the connecting columns at two ends of the upper clamping plate and the lower clamping plate.

A rotary-wing drone, characterized in that, includes the propeller base.

Compared with the prior art, the invention has the following beneficial effects:

1. according to the invention, through the arrangement of the swing buffer seat, when the unmanned aerial vehicle is operated and air is in a turbulent flow or actively deflects greatly, the deflection of the propeller along with the unmanned aerial vehicle body can be delayed, so that the propeller swings in a small range relative to the unmanned aerial vehicle body, the posture is kept unchanged when the unmanned aerial vehicle deflects greatly, the abrasion and the burden of the propeller caused by the sudden change or the large change of the posture of the unmanned aerial vehicle are effectively reduced, and the service life of the propeller is prolonged.

2. The swing buffer seat and the base are movably connected, so that the propeller and the unmanned aerial vehicle are connected in a non-rigid manner; and after unmanned aerial vehicle deflected, utilize the effect of centrifugal force, let screw and swing cushion socket parallel with the unmanned aerial vehicle fuselage gradually, make the swing of screw obtain fine buffering, avoid the gesture transient change of screw, be favorable to protecting the screw.

3. After unmanned aerial vehicle deflected, screw and swing cushion socket relied on centrifugal force to realize self balance, need not to utilize other peripheral hardware mechanisms, simple structure to realize the holistic self adjustment of unmanned aerial vehicle, be favorable to reducing the vibrations of screw when the swing, thereby improve unmanned aerial vehicle flight stability.

4. Compared with the traditional propeller base, the base comprises the base and the swing buffer base, the propeller is arranged on the swing buffer base, the distance between the plane of the propeller and the motor is increased, the blocking influence of the upper surface of the motor on the downward airflow generated by the propeller is reduced, and the flying efficiency is improved.

Drawings

Fig. 1-2 are schematic structural views (with a propeller installed) of one embodiment of a propeller base of a unmanned rotorcraft according to the present invention, where fig. 1 is a front view and fig. 2 is a perspective view.

Figure 3 is an enlarged view of the rotor base of the rotary wing drone of the present invention.

Fig. 4 is a perspective view of the base.

Fig. 5-6 are schematic views of the rotor base of the unmanned rotorcraft according to the present invention, wherein fig. 5 is a leftward swing and fig. 6 is a rightward swing.

Fig. 7-9 are schematic diagrams of the attitude of the propeller of the unmanned rotorcraft according to the present invention during flight, where fig. 7 is a schematic diagram of the unmanned rotorcraft body parallel to the propeller and horizontal during normal flight, fig. 8 is a schematic diagram of the unmanned rotorcraft body inclined with the propeller horizontal, and fig. 9 is a schematic diagram of the propeller parallel to the unmanned rotorcraft body.

Detailed Description

The present invention will be further described with reference to the following examples and drawings, but the embodiments of the present invention are not limited thereto.

Referring to fig. 1 to 6, the propeller base of the unmanned rotorcraft according to the present embodiment includes a base and a swing buffer seat disposed on the base, and the base is connected to a main shaft of a rotating motor of the unmanned rotorcraft; the propeller 2 of the unmanned aerial vehicle is arranged on the swing buffer seat, the swing buffer seat is movably connected to the base and can swing relative to the base, a swing axis 13 of the swing buffer seat is parallel to a plane where the propeller of the unmanned aerial vehicle rotates, a rotation axis 12 of the swing buffer seat is overlapped with a rotation axis 12 of the base, and the swing axis 13 of the swing buffer seat is intersected with the rotation axis 12; the angle between the swing axis 13 and the axis of the propeller 2 in the length direction is an acute angle.

Referring to fig. 1, in the present embodiment, the angle between the swing axis 13 and the axis of the propeller 2 is 45 degrees. When the included angle between the swing axis 13 and the axis of the propeller 2 is 45 degrees, the buffering performance and the safety performance are in the optimal range, and the protection effect on the propeller 2 is effectively improved. When the included angle is larger than 45 degrees, the swing amplitude of the propeller 2 is too large, and the safety performance of the propeller is reduced; when the included angle is smaller than 45 degrees, the swing amplitude of the propeller 2 is too small, and the buffering performance is low.

Referring to fig. 1-6, the base includes a bottom plate 3 and a connecting member 4, the connecting member 4 is disposed on the bottom plate 3, the bottom plate 3 is connected to a main shaft of a rotating motor of the unmanned aerial vehicle, the connecting member 4 is vertically disposed, and a connecting through hole 11 is disposed on the connecting member 4; the swing buffer seat is provided with a connecting bearing 6, and the connecting bearing 6 and the connecting piece 4 are installed together through a rotating shaft 7. Through the setting of connecting piece 4 and connection bearing 6, realize the swing of swing cushion socket to simple structure, connection bearing 6 be provided with do benefit to the stability that improves the swing cushion socket.

Referring to fig. 4, the connecting member 4 includes two oppositely disposed connecting plates 10, and the two connecting plates 10 are provided with the connecting through holes 11.

Referring to fig. 1-2, a bearing mounting seat 9 is provided on the swing buffer seat, and the connecting bearing 6 is mounted on the bearing mounting seat 9. The installation and fixation of the connecting bearing 6 are facilitated by the arrangement of the bearing installation seat 9. In addition, a bolt can be arranged on the swing buffer seat to realize the swing motion of the swing buffer seat, wherein the bolt passes through the connecting through hole on the connecting plate; the connection mode is simpler, the transformation is convenient, and the cost is reduced.

Referring to fig. 1-2, two propellers 2 are arranged on the swing buffer base, and the two propellers 2 are respectively arranged on two sides of the swing buffer base. Two propellers 2 are adopted, so that the installation of the swing buffer base is facilitated.

Referring to fig. 1, fig. 2, fig. 3, fig. 5 and fig. 6, the swing cushion block includes punch holder 1 and lower plate 5, the both ends of punch holder 1 and lower plate 5 are all fixed through spliced pole 8, just bearing mount pad 9 sets up the centre department at punch holder 1 and lower plate 5, the bottom of lower plate 5 is equipped with and is used for dodging connecting piece 4 dodges the hole, two screw 2 respectively fixed connection are on the spliced pole 8 at punch holder 1 and lower plate 5 both ends. By providing such a swing cushion seat, the structure is simple, and it is convenient to mount the propeller 2 and the bearing mount 9.

The unmanned rotorcraft of this embodiment includes the screw base.

Referring to fig. 1-9, the working principle of the propeller base of the unmanned rotorcraft of the present embodiment is:

unmanned aerial vehicle is when normal flight process, and screw 2 keeps parallel with the unmanned aerial vehicle fuselage, and the unmanned aerial vehicle fuselage and screw 2 at this moment all are in horizontal attitude, as shown in fig. 7. When the unmanned aerial vehicle encounters air turbulence or instant deflection or large-amplitude deflection of active control, the body of the unmanned aerial vehicle inclines in a short time, and the base is connected with a main shaft of a rotating motor of the unmanned aerial vehicle, so that the base can also change the posture suddenly along with the body of the unmanned aerial vehicle; at this moment, because the swing cushion seat rotates with the base to be connected, and the contained angle of the swing axis 13 of swing cushion seat and the axis of screw 2 is acute angle (45 degrees), consequently the base is along with unmanned aerial vehicle fuselage sudden change back, swing motion takes place for the base for the swing cushion seat, screw 2 on the swing cushion seat still keeps the horizontal attitude (unanimous with the fuselage attitude before unmanned aerial vehicle deflects), thereby avoid unmanned aerial vehicle's screw 2 to take place the attitude sudden change along with the unmanned aerial vehicle fuselage, reduce wearing and tearing and impact to screw 2, as shown in fig. 8. Then, because unmanned aerial vehicle's rotation motor drives the base continuously and rotates, consequently set up screw 2 on the swing cushion seat and keep rotating, under the effect of centrifugal force, swing cushion seat and screw 2 round swing axis 13 swings, is parallel with the unmanned aerial vehicle fuselage gradually, finally accomplishes whole self accommodation process, realizes screw 2's gesture buffer change, as shown in fig. 9.

The present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents and are included in the scope of the present invention.