CN211167405U - UAV Torsion Arm Rotor Mechanism - Google Patents

Abstract

A torsion arm rotor mechanism of an unmanned aerial vehicle, which comprises a fixed ring, a moving ring mounted on the fixed ring, a main shaft interspersed in the fixed ring and the moving ring, a propeller hub connected to the main shaft, and a rotating shaft installed at both ends of the propeller hub , the blade installed in the rotating shaft, the torsion arm connecting the main shaft and the moving ring, the first pull rod connected to the fixed ring, the steering gear connected to the first pull rod, the first pull rod is pulled by the steering gear to make the fixed ring and the moving ring The ring is inclined, and a second pull rod and a third pull rod are connected between the moving ring and the rotating shaft. The torsion arm structure of the torsion arm rotor mechanism of the unmanned aerial vehicle of the utility model is a symmetrical structure, and under the premise that the transmission of the tangential force is reliable, the installation and maintenance are convenient, the safety of the helicopter is improved, and the adverse effects caused by the use of counterweight blocks are avoided. , prolong the service life of rotor mechanism accessories.

Description

UAV Torsion Arm Rotor Mechanism

【Technical field】

The utility model relates to the technical field of unmanned aerial vehicle equipment, in particular to a torsion arm rotor mechanism of an unmanned aerial vehicle.

【Background technique】

The torsion arm mechanism of the UAV is used in the main rotor mechanism. The main function is to connect the transmission equipment and the guide mechanism. When the follower ring rotates, the tangential load of the rotor mechanism is transmitted to the rotor shaft. It is mostly installed between the moving ring and the rotor shaft of the automatic tilter of the drone. It can not only rotate synchronously with the main rotor shaft, but also move up and down along the direction of the rotor shaft. Holding the main drive shaft, the automatic tilter used in traditional drones has a torsion arm mechanism, and its structural features are mostly one-piece mechanisms. The load on the moving ring is transmitted to the rotor shaft and ensures the stable operation of the main rotor mechanism. The traditional one-piece torsion arm mechanism is installed on one side of the moving ring, so it is necessary to install the counterweight on the corresponding other side. The center of gravity of the torque arm mechanism is affected, so the structure and position of the counterweight become difficult to determine. In addition, the torsion arm mechanism equipped with counterweights has a complex structure, and is not easy to install, disassemble and maintain, and with the wear and weight reduction of high-cost components such as bushings and sleeves, it is possible to replace the counterweights.

It can be seen that, in view of the above problems, it is an urgent problem to be solved in the art to provide an improved UAV torque arm rotor mechanism.

【Content of utility model】

In view of the above problems, the torsion arm structure of the torsion arm rotor mechanism of the UAV of the utility model is a symmetrical structure, and under the premise of satisfying the reliable transmission of the tangential force, the installation and maintenance are convenient, the safety of the helicopter is improved, and the use of counterweight belts is avoided. The adverse effects will be extended, and the service life of the rotor mechanism accessories will be extended.

In order to solve the above problems, the torsion arm rotor mechanism of the UAV of the present utility model includes a fixed ring, a moving ring installed on the fixed ring, a main shaft interspersed in the fixed ring and the moving ring, a propeller hub connected on the main shaft, and a propeller mounted on the propeller. The rotating shaft at both ends of the hub, the blades installed in the rotating shaft, the torsion arm connecting the main shaft and the moving ring, the first tie rod connected to the fixed ring, and the steering gear connected to the first tie rod. The fixed ring and the moving ring are inclined, and a second pull rod and a third pull rod are connected between the moving ring and the rotating shaft. The rotating shaft rotates around the propeller hub through the second pull rod and the third pull rod. Unchanged, the lift of the drone is adjusted by the change of the angle of attack of the blades.

Further, a bearing is installed between the stationary ring and the movable ring, so that the movable ring can rotate relative to the stationary ring.

Further, the main shaft passes through the fixed ring and the moving ring, and a joint bearing is installed between the main shaft and the fixed ring and the moving ring, so that the fixed ring and the moving ring can be inclined relative to the main shaft.

Further, four connecting lugs are evenly distributed around the fixed ring, one end of the first pull rod can be rotatably connected to the lugs, and the other ends are respectively connected to the steering gear.

Further, four connecting lugs are evenly distributed around the moving ring, the two ends of the torsion arm are respectively rotatably connected to the two relatively distributed connecting lugs, and the other two connecting lugs are respectively connected with the second connecting lugs. The pull rod is rotatably connected.

Further, the second pull rods are connected with the rotating shaft through the third pull rod, the third pull rod and the second pull rod are rotatably connected, and the third pull rod and the rotating shaft are fixedly connected.

Further, the propeller hub is sleeved at the end of the main shaft and is fixedly connected with two bolts.

Further, there are two rotating shafts, which are respectively sleeved on both ends of the propeller hub, and bearings are installed between the rotating shaft and the propeller hub, so that the rotating shaft and the propeller hub can be rotatably connected.

Further, the torsion arm is a left-right symmetrical structure, which includes a bearing body rotatably connected to the moving ring through bolts, a first sleeve connecting rod connected to the bearing body, and a rotatable connecting rod connected to the first sleeve connecting rod. The second sleeve connecting rod and the jacket rotatably connected with the second sleeve connecting rod.

Further, the jacket is sleeved on the main shaft, and bolts are used to fix the jacket and the main shaft, so that the torsion arm can rotate with the main shaft.

Furthermore, the torsion arm structure of the torsion arm rotor mechanism of the UAV of the utility model is a symmetrical structure, and under the premise that the transmission of the tangential force is reliable, the installation and maintenance are convenient, the safety of the helicopter is improved, and the use of counterweight blocks is avoided. adverse effects and prolong the service life of rotor mechanism accessories.

【Description of drawings】

FIG. 1 is a schematic structural diagram of the torsion arm rotor mechanism of the UAV of the present invention.

2 is a schematic structural diagram of a fixed ring and a moving ring in the torsion arm rotor mechanism of the UAV of the present invention.

3 is a schematic structural diagram of the torsion arm in the torsion arm rotor mechanism of the UAV of the present invention.

【Detailed ways】

The directional terms mentioned in this utility model, such as "up", "down", "front", "rear", "left", "right", "inside", "outside", "side", etc., are only The directions in the drawings are only used to explain and illustrate the present invention, rather than to limit the protection scope of the present invention.

1 and 2, the composition structure of the torsion arm rotor mechanism of the unmanned aerial vehicle of the present invention is given, wherein the rotor mechanism includes a fixed ring 1, a moving ring 2 installed on the fixed ring, interspersed in the fixed ring and the moving ring The main shaft 3, the propeller hub 4 connected to the main shaft, the rotating shaft 5 installed at both ends of the propeller hub, the blade (not shown) installed in the rotating shaft 5, the torsion arm 6 connecting the main shaft and the moving ring, the rotor mechanism It also includes a steering gear (not shown), a first pull rod 7 connecting the steering gear and the fixed ring, and a paddle (not shown) installed in the rotating shaft 5 . Four connecting lugs are evenly distributed around the fixed ring 1 , one end of the first pull rod 7 can be rotatably connected to the lugs, and the other end is respectively connected to the steering gear. The movable ring 2 and the fixed ring 1 are rotatably connected by bearings, four connecting lugs are evenly distributed around the movable ring 2, and the two ends of the torsion arm 6 are respectively rotatably connected to two of them that are relatively distributed. On the connecting lugs, the other two connecting lugs are respectively rotatably connected to two second pull rods 8, the second pull rods 8 are connected with the rotating shaft 5 through the third pull rod 9, and the third pull rod 9 and the second pull rod 8 It can be rotatably connected between them, and is fixedly connected with the rotating shaft 5. A joint bearing 10 is installed on the inner ring of the fixed ring 1 and the moving ring 2, and the main shaft 3 is inserted into the fixed ring and the moving ring through the joint bearing. The propeller hub 4 is sleeved on the end of the main shaft 3 and is fixedly connected by two bolts. There are two rotating shafts 5 , which are respectively sleeved on both ends of the propeller hub 4 , and bearings are installed between the rotating shaft 5 and the propeller hub 4 , so that the rotating shaft 5 and the propeller hub 4 are rotatably connected. Referring to FIG. 3 , the composition structure of the torsion arm 6 is given. The torsion arm 6 is a left-right symmetrical structure, which includes a bearing body 601 rotatably connected to the upper lug plate of the moving ring 2 through bolts, a first A sleeve connecting rod 602, a second sleeve connecting rod 603 rotatably connected with the first sleeve connecting rod 602, and a jacket 604 rotatably connecting with the second sleeve connecting rod. The jacket 604 is sleeved on the main shaft 3, and the jacket and the main shaft are fixed by screws.

The working principle of the UAV torsion arm rotor mechanism is as follows: the steering gear pulls the first pull rod 7 to move downward, the first pull rod 7 pulls the fixed ring 1 to tilt, the fixed ring 1 drives the moving ring 2 to tilt, and the moving ring 2 pulls the first pull rod 7 to tilt. The second pull rod 8 moves downward, the second pull rod 8 pulls the third pull rod 9 to rotate, the third pull rod 9 drives the rotating shaft 5 to rotate around the propeller hub 4, and the rotation of the rotating shaft 5 causes the blade connected to its end to increase the angle of attack, The rotational speed of the main shaft 3 is constant, and the lift force generated increases as the inclination angle of the blade increases. The torsion arm structure of the torsion arm rotor mechanism of the unmanned aerial vehicle of the utility model is a symmetrical structure, and under the premise that the transmission of the tangential force is reliable, the installation and maintenance are convenient, the safety of the helicopter is improved, and the adverse effects caused by the use of counterweight blocks are avoided. , prolong the service life of rotor mechanism accessories.

In addition, it should be understood that although this specification is described in terms of embodiments, not each embodiment only includes an independent technical solution, and this description in the specification is only for the sake of clarity, and those skilled in the art should take the specification as a whole , the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims (10)

1. an unmanned aerial vehicle torsion arm rotor mechanism, it is characterised in that the unmanned aerial vehicle torsion arm rotor mechanism comprises a fixed ring (1), a moving ring (2) installed on the fixed ring, interspersed in the fixed ring and a moving ring The main shaft (3) in the ring, the propeller hub (4) connected to the main shaft, the rotating shaft (5) installed at both ends of the propeller hub, the blades installed in the rotating shaft (5), the torsion arm ( 6), the first tie rod (7) connected to the fixed ring (1), the steering gear connected to the first tie rod, the first tie rod (7) is pulled by the steering gear to make the fixed ring and the moving ring tilt, and the moving ring and the A second pull rod (8) and a third pull rod (9) are connected between the rotating shaft (5), and the rotating shaft (5) is rotated around the propeller hub (4) through the second pull rod (8) and the third pull rod (9), and the rotating shaft The rotation drives the angle of attack of the blades to change, the rotational speed of the main shaft (3) remains unchanged, and the lift of the drone is adjusted through the change of the angle of attack of the blades. 2 . The torsion arm rotor mechanism of an unmanned aerial vehicle according to claim 1 , wherein a bearing is installed between the fixed ring ( 1 ) and the moving ring ( 2 ), so that the moving ring can rotate relative to the fixed ring. 3 . 3. UAV torque arm rotor mechanism according to claim 1, is characterized in that, described main shaft (3) passes through in fixed ring (1) and moving ring (2), main shaft (3) and fixed ring A joint bearing (10) is installed between the fixed ring and the moving ring, so that the fixed ring and the moving ring can be inclined relative to the main shaft. 4. The unmanned aerial vehicle torsion arm rotor mechanism according to claim 1 is characterized in that, four connecting lugs are evenly distributed around the fixed ring (1), and one end of the first tie rod (7) can be rotated Connected to the ear plate, and the other ends are respectively connected to the servos. 5. The unmanned aerial vehicle torsion arm rotor mechanism according to claim 1, is characterized in that, four connecting lugs are evenly distributed around the moving ring (2), and the two ends of the torsion arm (6) are respectively rotatable It is connected to two oppositely distributed connecting lugs, and the other two connecting lugs are respectively rotatably connected to the second pull rods (8). 6. The unmanned aerial vehicle torsion arm rotor mechanism according to claim 1, wherein the second pull rod (8) is connected with the rotating shaft (5) through the third pull rod (9), and the third pull rod (9) ) and the second pull rod (8) are rotatably connected, and the third pull rod (9) is fixedly connected with the rotating shaft (5). 7 . The torsion arm rotor mechanism of an unmanned aerial vehicle according to claim 1 , wherein the propeller hub ( 4 ) is sleeved on the end of the main shaft ( 3 ) and fixedly connected using two bolts. 8 . 8. The unmanned aerial vehicle torsion arm rotor mechanism according to claim 1 is characterized in that, the rotating shaft (5) has two, which are respectively sleeved on both ends of the propeller hub (4), and the rotating shaft (5) and the A bearing is installed between the propeller hubs (4), so that the rotating shaft (5) and the propeller hub (4) are rotatably connected. 9. The torsion arm rotor mechanism of the unmanned aerial vehicle according to claim 1, wherein the torsion arm (6) is a left-right symmetrical structure, and it comprises a bearing body ( 601), a first sleeve connecting rod (602) connected to the bearing body, a second sleeve connecting rod (603) rotatably connected with the first sleeve connecting rod (602), and a second sleeve connecting rod (603) Rotatable connection jacket (604). 10. The torsion arm rotor mechanism of an unmanned aerial vehicle according to claim 9, wherein the jacket (604) is sleeved on the main shaft (3), and the jacket (604) is connected to the main shaft (3) using bolts ) is fixed so that the torque arm (6) can rotate with the main shaft (3).

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