Tilting rotor unmanned aerial vehicle motor tilting structure

Abstract

The utility model discloses a tilting rotor unmanned aerial vehicle motor tilting structure, and relates to the technical field of unmanned aerial vehicles, the tilting rotor unmanned aerial vehicle motor tilting structure comprises a steering engine, the output end of the steering engine is fixedly connected with the middle of a steering engine disc, the middle of one side, far away from the steering engine, of the steering engine disc is fixedly connected with the end part of a steering engine rocker arm, and the steering engine disc and the steering engine rocker arm are coaxially arranged; the first motor support and the second motor support are both located at the end of the support, when the steering engine drives the first motor support and the second motor support to rotate through cooperation of the steering engine rocker arm, the pull rod set, the rotating shaft rocker arm and the rotating shaft, the motor fixedly connected with the first motor support and the second motor support rotates synchronously, and when the first motor support, the second motor support and the motor rotate, the motor rotates synchronously. The steering engine rocker arm, the pull rod group, the rotating shaft rocker arm and the rotating shaft cannot be directly influenced, normal movement of the steering engine rocker arm, the pull rod group, the rotating shaft rocker arm and the rotating shaft can be guaranteed, and a motor cannot be damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of unmanned aerial vehicles (UAVs), in particular to a tilt-rotor UAV motor tilt structure. Background Art

[0002] The low-altitude economy is currently developing rapidly, and drones are an important carrier for the development of the low-altitude economy. Among them, tilt-rotor drones combine the characteristics of unmanned helicopters and multi-rotor drones, such as vertical take-off and landing, low-speed flight, hovering, and small take-off and landing site restrictions, with the characteristics of fixed-wing drones, such as long range, large payload, and fast flight speed. They are an important development direction for drones, and the tilt-rotor structure is a key technology for tilt-rotor drones.

[0003] The most significant feature of a tilt-rotor UAV is its ability to change the position of its rotors, which is achieved through a motor-tilt mechanism. Chinese Patent Publication No. CN 221273588 U discloses a UAV motor-tilt mechanism comprising a connecting shaft with its end fixed to the UAV, a servo unit fixed to the front end of the connecting shaft, and a tilt unit disposed on both the connecting shaft and the servo unit.

[0004] The above-mentioned UAV motor tilting structure utilizes a servo to drive the active gear to rotate, and the active gear drives the driven gear to rotate, thereby rotating the tilting motor seat; however, the tilting motor seat of the above-mentioned UAV motor tilting structure is located above the active gear and the driven gear, and the tilting motor seat is used to be fixedly connected to the motor. When the tilting motor seat drives the motor to rotate until the motor rotates to the position of the active gear and the driven gear, the active gear and the driven gear will hinder the rotation trajectory of the motor, causing the motor to collide with the active gear and the driven gear, which not only affects the normal rotation of the active gear and the driven gear, but may also damage the motor, causing the motor to fail to work normally. Utility Model Content

[0005] The purpose of the present utility model is to provide a tilt-rotor UAV motor tilt structure, in which a motor bracket 1 and a motor bracket 2 fixedly connected to the motor are located at the ends of the bracket. When the servo drives the motor bracket 1 and the motor bracket 2 to rotate through the servo rocker arm, the pull rod group, the rotating shaft rocker arm and the rotating shaft, the motor bracket 1 and the motor bracket 2 will not hinder the movement of the servo rocker arm, the pull rod group, the rotating shaft rocker arm and the rotating shaft, so as to solve the technical problems raised by the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A tilt-rotor UAV motor tilt structure includes a servo, wherein the output end of the servo is fixedly connected to the middle of a servo disc, and the middle of a side of the servo disc away from the servo is fixedly connected to the end of a servo rocker arm, and the servo disc and the servo rocker arm are coaxially arranged;

[0008] The end of the servo rocker arm away from the servo disc is rotationally connected to the end of the pull rod group through a connecting shaft; the end of the pull rod group away from the servo rocker arm is rotationally connected to the rotating shaft rocker arm through a connecting shaft; the end of the rotating shaft rocker arm away from the pull rod group is fixedly connected to the end of the rotating shaft, and the two ends of the rotating shaft are respectively fixedly connected to motor bracket one and motor bracket two.

[0009] As a further technical solution of the present invention, the servo is installed on a bracket, a bearing is installed at one end of the bracket close to the rotating shaft, and the middle section of the bearing is rotatably connected to the bracket through the bearing; a bolt hole is provided at one end of the bracket away from the bearing for connecting to external components.

[0010] As a further technical solution of the present invention, both ends of the rotating shaft are threaded with nuts, and the motor bracket 1 and the rotating shaft rocker arm are fixedly connected to one end of the rotating shaft through nuts, and the motor bracket 2 is fixedly connected to the other end of the rotating shaft through nuts; the ends of the motor bracket 1 and the motor bracket 2 away from the rotating shaft are provided with multiple screw clearance holes.

[0011] As a further technical solution of the present invention, both ends of the two connecting shafts are provided with retaining springs, and multiple retaining springs are respectively located on both sides of the pull rod group; the connections between the servo rocker arm and the pull rod group, and the rotating shaft rocker arm and the pull rod group are all connected by means of connecting shafts, self-lubricating composite bearings, and graphite self-lubricating gaskets.

[0012] As a further technical solution of the present invention, the pull rod group includes two pull rods, and the end of the shaft rocker arm away from the shaft and the end of the servo rocker arm away from the servo disc are both located between the two pull rods.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. In the present invention, motor bracket one and motor bracket two are both located at the ends of the bracket. When the servo drives motor bracket one and motor bracket two to rotate through the servo rocker arm, pull rod group, shaft rocker arm and shaft, the motor fixedly connected to motor bracket one and motor bracket two rotates synchronously. When motor bracket one, motor bracket two and the motor rotate, they will not have a direct impact on the servo rocker arm, pull rod group, shaft rocker arm and shaft, which can ensure the normal movement of the servo rocker arm, pull rod group, shaft rocker arm and shaft without damaging the motor.

[0015] 2. In the present invention, the connection between the servo rocker arm and the tie rod group, and the connection between the shaft rocker arm and the tie rod group are connected by means of a connecting shaft in combination with a self-lubricating composite bearing and a graphite self-lubricating gasket. The lubricating properties of the self-lubricating composite bearing and the graphite self-lubricating gasket are utilized to reduce the mutual friction between the various structures during the movement of the connecting rod, and at the same time reduce the fitting clearance between the structures. While ensuring the normal operation of the rotating pair, the virtual position is reduced, and the transmission efficiency and transmission accuracy are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural diagram of the utility model.

[0017] Figure 2 This utility model Figure 1 Another perspective of the picture.

[0018] Figure 3 This utility model Figure 2 Another perspective of the picture.

[0019] Figure 4 This utility model Figure 1 side view.

[0020] Figure 5 This utility model Figure 1 Top view of .

[0021] Figure 6 This utility model Figure 5 AA cross-sectional view.

[0022] In the figure: 1- bracket, 2- servo, 3- servo disc, 4- servo rocker arm, 5- pull rod assembly, 6- rotating shaft, 7- rotating shaft rocker arm, 8- nut, 9- motor bracket 1, 10- motor bracket 2, 11- connecting shaft, 12- retaining spring, 13- bearing. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1-6 In an embodiment of the present invention, a tilt-rotor UAV motor tilt structure includes a servo 2, an output end of the servo 2 is fixedly connected to the middle of a servo disc 3, a middle portion of a side of the servo disc 3 away from the servo 2 is fixedly connected to the end of a servo rocker arm 4, and the servo disc 3 and the servo rocker arm 4 are coaxially arranged;

[0025] The end of the steering gear rocker arm 4 away from the steering gear disc 3 is rotatably connected to the end of the tie rod group 5 via the connecting shaft 11; the end of the tie rod group 5 away from the steering gear rocker arm 4 is rotatably connected to the shaft rocker arm 7 via the connecting shaft 11; the end of the shaft rocker arm 7 away from the tie rod group 5 is fixedly connected to the end of the shaft 6, and the two ends of the shaft 6 are respectively fixedly connected to the motor bracket 1 9 and the motor bracket 2 10;

[0026] The servo 2 is mounted on the bracket 1. A bearing 13 is mounted on the end of the bracket 1 close to the rotating shaft 6, and the middle section of the bearing 13 is rotatably connected to the bracket 1 through the bearing 13. The end of the bracket 1 away from the bearing 13 is provided with a bolt hole for connecting to an external component.

[0027] Both ends of the rotating shaft 6 are threadedly connected with nuts 8, and the motor bracket 1 9 and the rotating shaft rocker arm 7 are fixedly connected to one end of the rotating shaft 6 through the nut 8, and the motor bracket 2 10 is fixedly connected to the other end of the rotating shaft 6 through the nut 8; the motor bracket 1 9 and the motor bracket 2 10 are both provided with multiple screw clearance holes at the end away from the rotating shaft 6.

[0028] By adopting the above technical solution, motor bracket 1 9 and motor bracket 2 10 are both located at the ends of bracket 1. When the servo 2 drives motor bracket 1 9 and motor bracket 2 10 to rotate through the servo rocker arm 4, pull rod group 5, shaft rocker arm 7 and shaft 6, the motor fixedly connected to motor bracket 1 9 and motor bracket 2 10 rotates synchronously. When motor bracket 1 9, motor bracket 2 10 and the motor rotate, they will not have a direct impact on the servo rocker arm 4, pull rod group 5, shaft rocker arm 7 and shaft 6, which can ensure the normal movement of the servo rocker arm 4, pull rod group 5, shaft rocker arm 7 and shaft 6 without damaging the motor.

[0029] In this embodiment, both ends of the two connecting shafts 11 are provided with a retaining spring 12, and a plurality of retaining springs 12 are respectively located on both sides of the tie rod group 5; the connection between the servo rocker arm 4 and the tie rod group 5, and the connection between the shaft rocker arm 7 and the tie rod group 5 are all connected by means of a connecting shaft, a self-lubricating composite bearing, and a graphite self-lubricating gasket;

[0030] The tie rod assembly 5 includes two tie rods, and one end of the shaft rocker arm 7 away from the shaft 6 and one end of the servo rocker arm 4 away from the servo disc 3 are both located between the two tie rods.

[0031] By adopting the above technical solution, the connection between the servo rocker arm 4 and the pull rod group 5, and the connection between the rotating shaft rocker arm 7 and the pull rod group 5 are connected by means of a connecting shaft in combination with a self-lubricating composite bearing and a graphite self-lubricating gasket. The lubricating properties of the self-lubricating composite bearing and the graphite self-lubricating gasket are utilized to reduce the mutual friction between the various structures during the movement of the connecting rod, and at the same time reduce the fitting clearance between the structures. While ensuring the normal operation of the rotating pair, the virtual position is reduced, and the transmission efficiency and transmission accuracy are improved.

[0032] The working principle of the utility model is as follows: the mounting plane and bolt holes reserved in the bracket 1 are matched with the bolts and nuts to complete the fixing of the tilting structure as a whole on the UAV; the power line and signal line of the servo 2 are connected to the UAV flight controller, the UAV power supply is used to power the servo 2, and the flight control system issues instructions to control the servo 2; after the servo 2 is powered on, the self-locking function of the servo 2 locks the motion structure state, and when the controller issues an instruction, the servo 2 outputs a clockwise or counterclockwise rotation drive according to the instruction; when the servo 2 shaft outputs a clockwise rotation drive, the servo rocker arm 4 rotates clockwise When the steering gear 2 outputs counterclockwise rotation drive, the steering gear rocker arm 4 rotates counterclockwise, and the tie rod group 5 is pulled back by the steering gear rocker arm 4. The tie rod group 5 pulls back the shaft rocker arm 7 to rotate counterclockwise, driving the shaft 6 to rotate counterclockwise. The motor bracket 1 9 and the motor bracket 2 10 are fixedly connected to the shaft 6 to rotate counterclockwise, realizing the upward tilt of the motor; when the steering gear 2 outputs counterclockwise rotation drive, the steering gear rocker arm 4 rotates counterclockwise, and the tie rod group 5 is pulled back by the steering gear rocker arm 4. The tie rod group 5 pulls back the shaft rocker arm 7 to rotate counterclockwise, driving the shaft 6 to rotate counterclockwise. The motor bracket 1 9 and the motor bracket 2 10 are fixedly connected to the shaft 6 to rotate counterclockwise, realizing the downward tilt of the motor;

[0033] The motor bracket 1 9 and the motor bracket 2 10 are both located at the ends of the bracket 1. When the steering gear 2 drives the motor bracket 1 9 and the motor bracket 2 10 to rotate through the steering gear rocker arm 4, the tie rod group 5, the rotating shaft rocker arm 7 and the rotating shaft 6, the motor fixedly connected to the motor bracket 1 9 and the motor bracket 2 10 rotates synchronously. When the motor bracket 1 9, the motor bracket 2 10 and the motor rotate, they will not affect the steering gear rocker arm 4, the tie rod group 5, the rotating shaft rocker arm 7 and the rotating shaft 6. This can ensure the normal movement of the steering gear rocker arm 4, the tie rod group 5, the rotating shaft rocker arm 7 and the rotating shaft 6 without damaging the motor.

[0034] The connection between the servo rocker arm 4 and the pull rod group 5, and the connection between the rotating shaft rocker arm 7 and the pull rod group 5 are connected by means of a connecting shaft 11 and a self-lubricating composite bearing and a graphite self-lubricating gasket. The lubricating properties of the self-lubricating composite bearing and the graphite self-lubricating gasket are utilized to reduce the mutual friction between the various structures during the movement of the connecting rod, and at the same time reduce the fitting clearance between the structures. While ensuring the normal operation of the rotating pair, the virtual position is reduced, and the transmission efficiency and transmission accuracy are improved.

[0035] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A tilt-rotor UAV motor tilt structure, characterized by: The invention comprises a steering gear (2), wherein the output end of the steering gear (2) is fixedly connected to the middle of a steering gear disc (3), the middle of a side of the steering gear disc (3) away from the steering gear (2) is fixedly connected to the end of a steering gear rocker arm (4), and the steering gear disc (3) and the steering gear rocker arm (4) are coaxially arranged; The end of the steering gear rocker arm (4) away from the steering gear disc (3) is rotationally connected to the end of the pull rod group (5) through the connecting shaft (11); the end of the pull rod group (5) away from the steering gear rocker arm (4) is rotationally connected to the rotating shaft rocker arm (7) through the connecting shaft (11); the end of the rotating shaft rocker arm (7) away from the pull rod group (5) is fixedly connected to the end of the rotating shaft (6), and the two ends of the rotating shaft (6) are respectively fixedly connected to the motor bracket 1 (9) and the motor bracket 2 (10).

2. The tilt-rotor UAV motor tilt structure according to claim 1, characterized in that: The steering gear (2) is mounted on a bracket (1); a bearing (13) is mounted on one end of the bracket (1) close to the rotating shaft (6); and a middle section of the bearing (13) is rotatably connected to the bracket (1) via the bearing (13); and a bolt hole for connecting to an external component is provided on one end of the bracket (1) away from the bearing (13).

3. The tilt-rotor UAV motor tilt structure according to claim 1, characterized in that: Both ends of the rotating shaft (6) are threadedly connected with nuts (8), and the motor bracket 1 (9) and the rotating shaft rocker arm (7) are fixedly connected to one end of the rotating shaft (6) through the nut (8), and the motor bracket 2 (10) is fixedly connected to the other end of the rotating shaft (6) through the nut (8); the ends of the motor bracket 1 (9) and the motor bracket 2 (10) away from the rotating shaft (6) are both provided with a plurality of screw clearance holes.

4. The tilt-rotor UAV motor tilt structure according to claim 1, characterized in that: Both ends of the two connecting shafts (11) are provided with retaining springs (12), and the four retaining springs (12) are respectively located on both sides of the pull rod group (5); the connection points between the servo rocker arm (4) and the pull rod group (5), and the rotating shaft rocker arm (7) and the pull rod group (5) are connected by means of the connecting shaft (11) in combination with the self-lubricating composite bearing and the graphite self-lubricating gasket.

5. The tilt-rotor UAV motor tilt structure according to claim 4, characterized in that: The pull rod group (5) includes two pull rods, and one end of the rotating shaft rocker arm (7) away from the rotating shaft (6) and one end of the steering gear rocker arm (4) away from the steering gear disc (3) are both located between the two pull rods.

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