CN212766717U - Automatic torque-converting mechanism for unmanned aerial vehicle propeller - Google Patents

Abstract

The utility model provides an automatic torque-converting mechanism of unmanned aerial vehicle screw belongs to unmanned air vehicle technical field to solve current unmanned aerial vehicle screw and through flying control chip control motor speed adjusting torque, require than higher to flying control chip and motor, be difficult to balance performance and duration simultaneously. The connecting frame is characterized in that two groups of circumferentially arrayed rotor wings are hinged to a bracket in the connecting frame; the outer wall of the connecting frame is hinged with two groups of semi-arc centrifugal torque converters; the bottom of the connecting frame is fixedly connected with a group of brushless motors. Drive the link through control motor drive and rotate, utilize the centrifugal arm position of rotational speed control centrifugal torque converter, the angle that realizes the wing oar controls the screw moment of torsion under the rotational speed of difference, it is more linear to make the lift, in many screw unmanned aerial vehicle of civilian level, can reduce rotational speed when hovering, wing oar angle antegrade direction of motion can reduce the windage when cruising in the perpendicular screw unmanned aerial vehicle of military use, low rotational speed can more the power saving, provide longer duration.

Description

Automatic torque-converting mechanism for unmanned aerial vehicle propeller

Technical Field

The utility model belongs to the technical field of unmanned aerial vehicle, more specifically say, in particular to automatic torque-converting mechanism of unmanned aerial vehicle screw.

Background

Unmanned aerial vehicle is called unmanned aerial vehicle for short ("UAV"), is an unmanned aerial vehicle operated by utilizing a radio remote control device and a self-contained program control device, the unmanned aerial vehicle is widely applied to military to civil along with the development of science and technology, the unmanned aerial vehicle can be stricken and detected in the military field, civil large-scale to meteorological topography and the like, small-scale to agricultural prevention and control, landscape shooting and the like, a propeller is mainly used in the unmanned aerial vehicle in a driving mode, the propeller is driven to generate lift force to drive the unmanned aerial vehicle to operate through rotation of a driving motor and the like, the unmanned aerial vehicle mostly takes electric power as a main part, the flying speed and even the flying posture are controlled through the rotating speed control torque of a control motor, and the cruising of the unmanned aerial vehicle is also.

For example, application No.: CN201921185170.6 the utility model provides an automatic torque conversion mechanism of screw, it includes at least one paddle, the kuppe, the oar seat, oar hub and drive oar hub pivoted drive arrangement, the both ends of oar hub are connected with kuppe and drive arrangement respectively, the paddle has oar root and oar tip, the inside of oar seat has the installation cavity, the oar seat is equipped with the mounting hole that corresponds with the oar root, the oar root passes the mounting hole, the oar root passes through rotating device and is connected with the oar hub, the oar hub is inserted and is located the installation cavity, and be connected with the elastic component between the top of oar seat and the bottom of kuppe. The utility model discloses can solve unmanned aerial vehicle among the prior art and can not realize automatic torque conversion to reduce the problem of pneumatic efficiency.

Based on the above, the existing propeller of the unmanned aerial vehicle mostly adopts a form of fixing blades, the rotation speed of the motor can be controlled only through the flight control chip to adjust the torque, the flying attitude height and speed can be controlled through different torques, the requirements on the motor and the flight control chip are high, the performance and the cruising ability are difficult to balance, and the torque is difficult to change under the condition of continuously generating the lift force in the air by the method for adjusting the torque by means of the lift force.

Therefore, in view of the above, research and improvement are performed on the existing structure and defects, and an automatic torque-converting mechanism for a propeller of an unmanned aerial vehicle is provided, so as to achieve the purpose of higher practical value.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides an automatic torque conversion mechanism of unmanned aerial vehicle screw to solve the form that current unmanned aerial vehicle screw adopted fixed paddle more, can only control motor rotational speed through flying control chip and adjust the moment of torsion size, realize different torque control flight gesture height and speed, require than higher to motor and flying control chip, be difficult to balance performance and duration, through the problem that the method of the above-mentioned invention with the help of lift regulation screw control moment of torsion changes the moment of torsion more difficult under the circumstances of lift continuously produced in the air.

The utility model relates to an automatic torque-converting mechanism's of unmanned aerial vehicle screw purpose and efficiency are reached by following concrete technical means:

an automatic torque-converting mechanism for a propeller of an unmanned aerial vehicle comprises a connecting frame; the bracket inside the connecting frame is hinged with two groups of rotor wings in a circumferential array, and the connecting frame fixes the positions of the rotor wings by the projection of the tail shaft of the rotor wings; the outer wall of the connecting frame is hinged with two groups of semi-arc centrifugal torque converters; the bottom of the connecting frame is fixedly connected with a group of brushless motors.

Further, the link is still including the mount, and the link top is provided with the arc radome fairing, and the link outside is the ring, is provided with two sets of trompils and two pairs of connecting axles in the middle of the ring, and the inside cuboid frame of link is provided with two sets of cylinder type draw-in grooves, and there is a set of round hole of taking the key at link bottom center, a set of brushless motor of link bottom round hole fixedly connected with, the mount of two sets of holes of still fixedly connected with on the link outer wall ring.

Further, the rotor is still including the wing oar, and the axle center inner of rotor is provided with the cylinder type draw-in groove of the inside cuboid frame of cylinder piece joint link, and the outer hub rotation that the rotor stretches out link radome fairing part is connected in the hole of mount, a set of wing oar of rotor axle center outer end fixedly connected with.

Further, centrifugal torque converter is still including the concoction gear, centrifugal arm, micro-control gear, reset spring, centrifugal torque converter's centrifugal arm hinged joint is on the trompil connecting axle in the middle of the outside ring of link, nested a set of reset spring of installing on the connecting axle of link, centrifugal arm is half arc, the top of centrifugal arm connecting axle is provided with a set of recess, reset spring elastic connection is on link and centrifugal arm recess, centrifugal arm connecting axle one end fixedly connected with a set of micro-control gear that has spacing tooth, micro-control gear is connected with the concoction gear engagement and is constituteed gear drive mechanism.

Furthermore, the rotor wing is still including fine setting bevel gear, micro-control bevel gear, and the rotor wing is at link outer wall department through a set of fine setting bevel gear of key fixedly connected with, and the homodyne gear top is through a set of micro-control bevel gear of key fixedly connected with, and the fine setting bevel gear meshing connects micro-control bevel gear and constitutes gear drive mechanism.

Compared with the prior art, the utility model discloses following beneficial effect has:

this mechanism adopts the method of centrifugal torque converter, rotational speed control centrifugal arm position through the control motor, make the angle of wing oar change, realize the moment of torsion that the control screw produced under the rotational speed of difference, make lift more linear, more conveniently control unmanned aerial vehicle's gesture, in civilian level many screw unmanned aerial vehicle, can reduce the rotational speed when hovering, in military perpendicular screw unmanned aerial vehicle, the wing oar angle is bigger (not feathering) when low-speed keeps cruising, the cisoid direction of travel can reduce the windage and improve efficiency, the rotational speed is lower can the power saving more, provide longer duration, control is simpler for utilizing lift control.

Drawings

Fig. 1 is a schematic diagram of the main body axial structure of the present invention.

Fig. 2 is a schematic diagram of the main body center section structure of the present invention.

Fig. 3 is a schematic view of the rotor installation profile structure of the present invention.

Fig. 4 is a schematic view of the outer shaft side structure of the connection frame fairing of the present invention.

Fig. 5 is a schematic diagram of a structure of the centrifugal torque converter main body on the shaft side.

Fig. 6 is a schematic view of the side structure of the micro-control gear mounting shaft of the present invention.

Fig. 7 is a schematic diagram of the side structure of the micro-control bevel gear linkage shaft of the present invention.

In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:

1. a rotor; 101. a wing paddle; 102. finely adjusting the bevel gear; 103. micro-control bevel gears; 2. a centrifugal torque converter; 201. a coherent gear; 202. a centrifugal arm; 203. micro-control gear; 204. a return spring; 3. a connecting frame; 301. a fixed mount; 4. a brushless motor.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

as shown in figures 1 to 7:

the utility model provides an automatic torque-converting mechanism of an unmanned aerial vehicle propeller, which comprises a connecting frame 3; the bracket inside the connecting frame 3 is hinged with two groups of rotor wings 1 in a circumferential array, and the connecting frame 3 fixes the positions of the rotor wings 1 fixed by the tail shaft bulges of the rotor wings 1; the outer wall of the connecting frame 3 is hinged with two groups of semi-arc centrifugal torque converters 2; the bottom of the connecting frame 3 is fixedly connected with a group of brushless motors 4.

Wherein, the connecting frame 3 also comprises a fixing frame 301, the top of the connecting frame 3 is provided with an arc-shaped fairing, the outside of the connecting frame 3 is a circular ring, the middle of the circular ring is provided with two groups of openings and two pairs of connecting shafts, a cuboid frame inside the connecting frame 3 is provided with two groups of cylindrical clamping grooves, the center of the bottom of the connecting frame 3 is provided with a group of round holes with keys, the round holes at the bottom of the connecting frame 3 are fixedly connected with a group of brushless motors 4, the round holes at the outer wall of the connecting frame 3 are also fixedly connected with two groups of fixing frames 301 with holes, when in use, the brushless motors 4 are electrified through the prior unmanned aerial vehicle technology, so that the rotating shafts of the brushless motors 4 rotate, as the rotating shafts of the brushless motors 4 are fixedly connected with the round holes at the bottom of the connecting frame 3, the connecting frame 3 is driven to synchronously rotate, the inside, the resistance is reduced and the rotating efficiency is improved.

Wherein, rotor 1 is still including wing oar 101, the axle center inner of rotor 1 is provided with the cylinder type draw-in groove of the inside cuboid frame of cylinder piece joint link 3, rotor 1 stretches out the outer rotation of the outer axle of link 3 radome fairing part and connects in the hole of mount 301, a set of wing oar 101 of 1 axle center outer end fixedly connected with of rotor, when using, rotor 1 is fixed through 3 inner frame of link and outside mount 301, ensure that the position keeps unanimous, drive 1 synchronous rotations of rotor of two sets of circumference arrays when link 3 rotates simultaneously, the wing oar 101 synchronous rotation production lift of 1 axle center outer end of rotor can drive unmanned aerial vehicle and take off.

Wherein, the centrifugal torque converter 2 also comprises a homodyne gear 201, a centrifugal arm 202, a micro-control gear 203 and a return spring 204, the centrifugal arm 202 of the centrifugal torque converter 2 is hinged on a perforated connecting shaft in the middle of an external circular ring of the connecting frame 3, a group of return springs 204 are nested and installed on the connecting shaft of the connecting frame 3, the centrifugal arm 202 is semi-arc-shaped, the top of the connecting shaft of the centrifugal arm 202 is provided with a group of grooves, the return spring 204 is elastically connected on the connecting frame 3 and the grooves of the centrifugal arm 202, one end of the connecting shaft of the centrifugal arm 202 is fixedly connected with a group of micro-control gears 203 with limit teeth, the micro-control gears 203 are meshed and connected with the homodyne gear 201 to form a gear transmission mechanism, when in use, because the centrifugal arm 202 of the centrifugal torque converter 2 is hinged on the connecting shaft of the connecting frame 3, the connecting frame 3 rotates and drives, when the rotating speed reaches a certain speed, the centrifugal arm 202 of the centrifugal torque converter 2 is influenced by centripetal force to rotate the hinge and outwards unfold from the connecting frame 3, the micro-control gear 203 is driven to rotate when the centrifugal arm 202 outwards unfolds, the meshed homodyne gear 201 is driven to synchronously rotate by the micro-control gear 203 of the gear transmission mechanism, the homodyne gear 201 is clamped by the limiting teeth of the micro-control gear 203, the limiting teeth of the micro-control gear 203 rotate for about 25 degrees at the maximum, so that the centrifugal arm 202 does not continue to extend, the homodyne gear 201 synchronously stops rotating, and the reset spring 204 can reset the centrifugal arm 202 through elasticity when the rotating speed is reduced or stopped.

Wherein the rotor wing 1 also comprises a fine adjustment bevel gear 102 and a micro control bevel gear 103, the rotor wing 1 is fixedly connected with a group of fine adjustment bevel gears 102 at the outer wall of the connecting frame 3 through keys, the top of the homodyne gear 201 is fixedly connected with a group of micro control bevel gears 103 through keys, the fine adjustment bevel gears 102 are meshed and connected with the micro control bevel gears 103 to form a gear transmission mechanism, when in use, the connecting frame 3 rotates to a certain speed, the centrifugal arm 202 expands outwards, the micro-control gear 203 drives the homodyne gear 201 to rotate, the homodyne gear 201 drives the fixedly connected micro-control bevel gear 103 to rotate synchronously, the fine control bevel gear 103 of the gear transmission mechanism drives the meshed fine control bevel gear 102 to synchronously rotate for a certain angle, the same certain angle deflection is set by default when the wing propellers 101 are installed, and the fine control bevel gear 102 drives the rotor wing 1 to rotate for a certain angle, so that the fixedly connected wing propellers 101 rotate to be in a horizontal state.

The specific use mode and function of the embodiment are as follows:

the brushless motor 4 is electrified through the prior unmanned aerial vehicle technology, so that the rotating shaft of the brushless motor 4 rotates, the connecting frame 3 fixedly connected with the rotating shaft of the brushless motor 4 rotates synchronously, the inside of the connecting frame 3 is of a symmetrical structure and can keep stable rotation, the fairing arranged outside reduces the wind resistance generated by the internal structure when rotating, reduces the resistance and improves the rotating efficiency, the internal frame of the connecting frame 3 and the fixing frame 301 arranged outside are fixedly connected with two groups of rotor wings 1, the connecting frame 3 rotates the rotor wings 1 synchronously, the paddles 101 at the outer end of the axle center of the rotor wings 1 rotate synchronously to generate lift force to drive the unmanned aerial vehicle to take off, the centrifugal arm 202 of the centrifugal torque converter 2 is hinged on the connecting shaft of the connecting frame 3, when the rotating speed of the connecting frame 3 reaches a certain speed, the centrifugal arm 202 of the centrifugal torque converter 2 is influenced by centripetal force to rotate the hinge and is unfolded outwards from the connecting frame 3, and when, the meshed synchronous gears 201 are driven to synchronously rotate by the micro-control gear 203 of the gear transmission mechanism, the synchronous gears 201 drive the fixedly connected micro-control bevel gears 103 to synchronously rotate, the meshed fine-control bevel gears 102 are driven to synchronously rotate by the micro-control bevel gears 103 of the gear transmission mechanism, the same certain angle deflection is set by default when the wing propellers 101 are installed, the fine-control bevel gears 102 drive the rotor wings 1 to rotate by a certain angle, so that the fixedly connected wing propellers 101 rotate to be in a horizontal state, meanwhile, the limiting teeth of the micro-control gear 203 clamp the synchronous gears 201 to limit the rotating angle of the centrifugal arms 202 to continue to extend, the synchronous gears 201 also synchronously stop rotating, the torque generated by the wing propellers 101 during rotation is automatically controlled, the centrifugal arms 202 are reset by the elasticity of the reset springs 204 when the rotating speed is reduced or stopped, the synchronous rotation of the synchronous gears 201 drives the micro-control bevel gears 103 to rotate, the engaged bevel trim gears 102 rotate synchronously to restore the angle of yaw of the wing paddles 101.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims (5)

1. The utility model provides an automatic torque-converting mechanism of unmanned aerial vehicle screw which characterized in that: the automatic torque conversion mechanism for the propeller of the unmanned aerial vehicle comprises a connecting frame (3); the bracket inside the connecting frame (3) is hinged with two groups of rotor wings (1) in a circumferential array, and the connecting frame (3) fixes the positions of the rotor wings (1) fixed by the protruding of the tail shaft of the rotor wings (1); the outer wall of the connecting frame (3) is hinged with two groups of semi-arc centrifugal torque converters (2); the bottom of the connecting frame (3) is fixedly connected with a group of brushless motors (4).

2. The automatic torque conversion mechanism of unmanned aerial vehicle screw of claim 1, characterized in that: link (3) are still including mount (301), and link (3) top is provided with the arc radome fairing, and link (3) outside is the ring, is provided with two sets of trompils and two pairs of connecting axles in the middle of the ring, and link (3) inside cuboid frame is provided with two sets of cylinder type draw-in grooves, and link (3) bottom center has a set of round hole of taking the key, a set of brushless motor (4) of link (3) bottom round hole fixedly connected with, and link (3) outer wall ring goes back two sets of mount (301) that have the hole of fixedly connected with.

3. The automatic torque conversion mechanism of unmanned aerial vehicle screw of claim 1, characterized in that: rotor (1) is still including wing oar (101), and the axle center inner of rotor (1) is provided with the cylinder type draw-in groove of the inside cuboid frame of cylinder piece joint link (3), and rotor (1) stretches out the outer rotation of link (3) radome fairing part and connects in the hole of mount (301), and rotor (1) axle center outer end fixedly connected with a set of wing oar (101).

4. The automatic torque conversion mechanism of unmanned aerial vehicle screw of claim 1, characterized in that: centrifugal torque converter (2) are still including concocting gear (201), centrifugal arm (202), micro-control gear (203), reset spring (204), centrifugal arm (202) hinged joint of centrifugal torque converter (2) is on the trompil connecting axle in the middle of link (3) outside ring, nested one set of reset spring (204) of installing on the connecting axle of link (3), centrifugal arm (202) are half arc, the top of centrifugal arm (202) connecting axle is provided with a set of recess, reset spring (204) elastic connection is on link (3) and centrifugal arm (202) recess, centrifugal arm (202) connecting axle one end fixedly connected with a set of micro-control gear (203) that have spacing tooth, micro-control gear (203) and concocting gear (201) meshing are connected and are constituteed gear drive mechanism.

5. The automatic torque conversion mechanism of unmanned aerial vehicle screw of claim 1, characterized in that: the rotor (1) is characterized by further comprising fine adjustment bevel gears (102) and micro control bevel gears (103), the rotor (1) is fixedly connected with a set of fine adjustment bevel gears (102) through keys at the outer wall of the connecting frame (3), the tops of the synchronous adjustment gears (201) are fixedly connected with a set of micro control bevel gears (103) through keys, and the fine adjustment bevel gears (102) are meshed with the micro control bevel gears (103) to form a gear transmission mechanism.

Images