A landing gear mechanism of a drone

Abstract

The utility model relates to the technical field of unmanned plane, and disclose a foot stool mechanism of unmanned plane, including unmanned plane body, the left and right sides outer surface of unmanned plane body all are fixedly connected with first fixed seat, the outer surface of first fixed seat is provided with fixed link, the outer surface movable sleeve of fixed link is equipped with movable link, the outer surface of fixed link is opened with a plurality of linear array arrangement's location screw hole, the outer surface screw penetration of movable link has location bolt, the other end of movable link is provided with second fixed seat, the bottom outer surface of second fixed seat is fixedly connected with connecting plate, the bottom outer surface of connecting plate is fixedly connected with U plate, the bottom of U plate is provided with the chassis, through location bolt cooperation location bolt adjustment fixed link and the length between movable link, thereby will the chassis adjust to the below of the pendant, avoid the height of pendant higher than the height of chassis and influence the stability when unmanned plane landing.

Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) technology, specifically to a UAV landing gear mechanism. Background Technology

[0002] Unmanned aerial vehicles (UAVs) are unmanned aircraft controlled by radio remote control equipment and onboard program control devices. With the advancement and development of technology, the performance of UAVs has become increasingly excellent. As a result, UAVs have been gradually applied in many fields such as aerial photography, agriculture, plant protection, express delivery, disaster relief, and surveying. Small UAVs use a direct landing method when landing, so they need to be equipped with landing gear to prevent damage to the UAV body.

[0003] In the existing technology, the tripods used for drones are fixed on both sides of the drone and their height cannot be adjusted. However, different attachments are added to the drone according to the needs of the work. For example, when spraying pesticides, a pesticide spraying component is added. The bottom of some attachments extends beyond the bottom of the tripod, which causes the tripod to not make contact with the ground when the drone lands, resulting in unstable landing. Therefore, a tripod mechanism for drones is proposed. Utility Model Content

[0004] In view of the shortcomings of the prior art, this utility model provides a landing gear mechanism for a drone to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a landing gear mechanism for a drone, comprising a drone body, with first fixed seats fixedly connected to the outer surfaces of both the left and right sides of the drone body, a fixed rod provided on the outer surface of the first fixed seat, a movable rod movably sleeved on the outer surface of the fixed rod, a plurality of positioning screw holes arranged in a linear array on the outer surface of the fixed rod, a positioning bolt threaded through the outer surface of the movable rod, the other end of the positioning bolt being threadedly connected to one of the positioning screw holes, a second fixed seat provided at the other end of the movable rod, a connecting plate fixedly connected to the bottom outer surface of the second fixed seat, a U-shaped plate fixedly connected to the bottom outer surface of the connecting plate, and a base frame provided at the bottom of the U-shaped plate.

[0006] Furthermore, the outer surface of the U-shaped plate is provided with multiple piston cylinders, the inner surface of the piston cylinders is movably connected to a piston disc, the bottom outer surface of the piston disc is fixedly connected to a piston rod, the other end of the piston rod is fixedly connected to the base frame, and the top outer surface of the connecting plate is provided with multiple air bladders, which are respectively connected to the interior of the multiple piston cylinders.

[0007] Furthermore, the outer surface of the second fixed seat is rotatably connected to the first support shaft, the fixed rod is fixedly sleeved on the outer surface of the first support shaft, the outer surface of the first support shaft is provided with a first thread, the first support shaft is threadedly connected to the first thread at the first thread, and a first washer is provided between the first nut and the second fixed seat.

[0008] Furthermore, a second support shaft is rotatably connected to the outer surface of the first fixed seat, the movable rod is fixedly sleeved on the outer surface of the second support shaft, a second thread is provided on the outer surface of the second support shaft, a second nut is threadedly connected to the second support shaft at the second thread, and a second washer is provided between the second nut and the first fixed seat.

[0009] Furthermore, multiple protective covers are fixedly connected to the top outer surface of the connecting plate, and the multiple protective covers are respectively disposed on the outer surface of multiple airbags.

[0010] Furthermore, shock-absorbing pads are fixedly connected to the outer surface of the base frame.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. The landing gear mechanism of this drone uses positioning bolts to adjust the length between the fixed rod and the movable rod, thereby adjusting the base frame to be below the hanger, so as to avoid the height of the hanger being higher than the height of the base frame and affecting the stability of the drone during landing.

[0013] 2. The landing gear mechanism of the drone, when the drone lands, the base frame contacts the ground, causing the piston rod to drive the piston disc to move inside the piston cylinder, compressing the air pressure inside the piston cylinder, causing the air pressure to enter the airbag, causing the airbag to inflate, thereby relying on the air pressure inside the piston disc and piston cylinder to buffer the force of the base frame contacting the ground, so that the drone can land stably. Attached Figure Description

[0014] Figure 1 This is a front view structural diagram of the present invention;

[0015] Figure 2 This is a schematic diagram of the fixed rod and movable rod of this utility model and their related structures;

[0016] Figure 3 This is a side sectional view of the fixed rod and movable rod and their related structures of this utility model;

[0017] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0018] In the diagram: 1. UAV body; 2. First fixed base; 3. Fixed rod; 4. Movable rod; 5. Second fixed base; 6. Connecting plate; 7. U-shaped plate; 8. Positioning screw hole; 9. Positioning bolt; 10. Piston cylinder; 11. Piston rod; 12. Base frame; 13. Airbag; 14. First support shaft; 15. First nut; 16. First washer; 17. Second support shaft; 18. Second nut. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please refer to the following: Figures 1-4 This utility model provides a technical solution: a landing gear mechanism for a drone, including a drone body 1. First fixed seats 2 are fixedly connected to the outer surfaces of both the left and right sides of the drone body 1. Fixed rods 3 are provided on the outer surfaces of the first fixed seats 2. Movable rods 4 are movably sleeved on the outer surfaces of the fixed rods 3. A plurality of positioning screw holes 8 arranged in a linear array are opened on the outer surfaces of the fixed rods 3. Positioning bolts 9 are threaded through the outer surfaces of the movable rods 4. The other end of the positioning bolts 9 is threadedly connected to one of the positioning screw holes 8. A second fixed seat 5 is provided at the other end of the movable rod 4. A connecting rod is fixedly connected to the bottom outer surface of the second fixed seat 5. Connecting plate 6 has a U-shaped plate 7 fixedly connected to its bottom outer surface. The bottom of the U-shaped plate 7 is equipped with a base frame 12. Specifically, when the drone body 1 needs to add a hanging part and the height of the base frame 12 needs to be adjusted, the positioning bolt 9 is unscrewed so that the positioning bolt 9 is disengaged from the inside of the positioning screw hole 8. The relative length between the movable rod 4 and the fixed rod 3 is adjusted until the base frame 12 is located below the hanging part. Then, the positioning bolt 9 is screwed into the corresponding positioning screw hole 8 to limit the fixed rod 3 and the movable rod 4, thereby adjusting the height of the base frame 12 and preventing the height of the hanging part from being higher than the height of the base frame 12, which would affect the stability of the drone when landing.

[0021] In this embodiment, the outer surface of the U-shaped plate 7 is provided with a plurality of piston cylinders 10, the inner surface of the piston cylinder 10 is movably connected to a piston disc, the bottom outer surface of the piston disc is fixedly connected to a piston rod 11, the other end of the piston rod 11 is fixedly connected to the base frame 12, and the top outer surface of the connecting plate 6 is provided with a plurality of airbags 13, which are respectively connected to the interior of the plurality of piston cylinders 10. Specifically, when the UAV lands, the base frame 12 contacts the ground, causing the piston rod 11 to drive the piston disc to move inside the piston cylinder 10, compressing the air pressure inside the piston cylinder 10, causing the air pressure to enter the airbags 13, causing the airbags 13 to expand, thereby relying on the air pressure inside the piston disc and piston cylinder 10 to buffer the force of the base frame 12 contacting the ground, so that the UAV can land stably.

[0022] In this embodiment, the outer surface of the second fixed seat 5 is rotatably connected to the first support shaft 14, and the fixed rod 3 is fixedly sleeved on the outer surface of the first support shaft 14. The outer surface of the first support shaft 14 is provided with a first thread, and the first support shaft 14 is threadedly connected to the first thread at the first thread. A first washer 16 is provided between the first nut 15 and the second fixed seat 5. Specifically, loosening the first nut 15 allows the movable rod 4 to drive the first support shaft 14 to rotate, so that the base frame 12 is in a position perpendicular to the horizontal plane. Then, tightening the first nut 15 makes the first washer 16 tightly attached to the second fixed seat 5, and the base frame 12 is limited by the friction between the first washer 16 and the second fixed seat 5.

[0023] In this embodiment, a second support shaft 17 is rotatably connected to the outer surface of the first fixed base 2. A movable rod 4 is fixedly sleeved on the outer surface of the second support shaft 17. A second thread is provided on the outer surface of the second support shaft 17. A second nut 18 is threadedly connected to the second support shaft 17 at the second thread. A second washer is provided between the second nut 18 and the first fixed base 2. Specifically, by loosening the second nut 18, the fixed rod 3 can drive the second support shaft 17 to rotate, adjusting the tilt angle of the fixed rod 3 and the movable rod 4 to provide space for hangers of different widths. Then, the second nut 18 is tightened so that the second washer is attached to the first fixed base 2. The tilt angle of the fixed rod 3 and the movable rod 4 is limited by the friction between the second washer and the first fixed base 2.

[0024] In this embodiment, multiple protective covers are fixedly connected to the top outer surface of the connecting plate 6. The multiple protective covers are respectively set on the outer surface of multiple airbags 13. Specifically, the multiple protective covers protect the outside of the multiple airbags 13 and block the airflow to prevent the airbags 13 from falling off due to excessive wind force when the drone body 1 is flying.

[0025] In this embodiment, a shock-absorbing pad is fixedly connected to the outer surface of the base frame 12. Specifically, the shock-absorbing pad is a silicone pad, which has a certain elastic deformation capability. The shock-absorbing pad buffers the impact force when the base frame 12 comes into contact with the ground.

[0026] It is worth noting that the weight and material selection of the various structures on the side of the drone body 1 should not affect the normal flight status of the drone body 1.

[0027] Working principle: When using this invention, if the height of the base frame 12 needs to be adjusted to add a mounting bracket to the drone body 1, the positioning bolt 9 is unscrewed, causing it to disengage from the positioning screw hole 8. The relative length between the movable rod 4 and the fixed rod 3 is adjusted until the base frame 12 is below the mounting bracket. Then, the positioning bolt 9 is screwed into the corresponding positioning screw hole 8 to limit the movement of the fixed rod 3 and the movable rod 4, thereby adjusting the height of the base frame 12. This prevents the height of the mounting bracket from exceeding the height of the base frame 12, which would affect the stability of the drone during landing. Furthermore, by loosening the second nut 18, the fixed rod 3 can drive the second support shaft 17 to rotate upwards. The tilt angles of the fixed rod 3 and the movable rod 4 are adjusted to provide space for hangers of different widths. Then, the second nut 18 is tightened so that the second washer is attached to the first fixed seat 2. The tilt angles of the fixed rod 3 and the movable rod 4 are limited by the friction between the second washer and the first fixed seat 2. Then, the first nut 15 is loosened so that the movable rod 4 can drive the first support shaft 14 to rotate, so that the base frame 12 is in a position perpendicular to the horizontal plane. Then, the first nut 15 is tightened again so that the first washer 16 is attached to the second fixed seat 5. The base frame 12 is limited by the friction between the first washer 16 and the second fixed seat 5.

[0028] When the drone lands, the base frame 12 contacts the ground, causing the piston rod 11 to drive the piston disc to move inside the piston cylinder 10, compressing the air pressure inside the piston cylinder 10. This causes the air pressure to enter the airbag 13, which inflates. The air pressure inside the piston disc and piston cylinder 10 then cushions the impact of the base frame 12 on the ground, allowing the drone to land stably.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tripod mechanism for a drone, comprising the drone body (1), characterized in that: The outer surfaces of the left and right sides of the UAV body (1) are fixedly connected to a first fixed seat (2). The outer surface of the first fixed seat (2) is provided with a fixed rod (3). The outer surface of the fixed rod (3) is movably fitted with a movable rod (4). The outer surface of the fixed rod (3) is provided with a plurality of positioning screw holes (8) arranged in a linear array. The outer surface of the movable rod (4) is threaded with a positioning bolt (9). The other end of the positioning bolt (9) is threadedly connected to one of the positioning screw holes (8). The other end of the movable rod (4) is provided with a second fixed seat (5). The bottom outer surface of the second fixed seat (5) is fixedly connected with a connecting plate (6). The bottom outer surface of the connecting plate (6) is fixedly connected with a U-shaped plate (7). The bottom of the U-shaped plate (7) is provided with a base frame (12).

2. The tripod mechanism for a drone according to claim 1, characterized in that: The outer surface of the U-shaped plate (7) is provided with a plurality of piston cylinders (10), the inner surface of the piston cylinders (10) is movably connected with a piston disc, the bottom outer surface of the piston disc is fixedly connected with a piston rod (11), the other end of the piston rod (11) is fixedly connected with a base frame (12), the top outer surface of the connecting plate (6) is provided with a plurality of airbags (13), and the plurality of airbags (13) are respectively connected to the interior of the plurality of piston cylinders (10).

3. The tripod mechanism for a drone according to claim 1, characterized in that: The outer surface of the second fixed seat (5) is rotatably connected to the first support shaft (14), the fixed rod (3) is fixedly sleeved on the outer surface of the first support shaft (14), the outer surface of the first support shaft (14) is provided with a first thread, the first support shaft (14) is threadedly connected to the first thread at the first thread, and a first nut (15) is provided between the first nut (15) and the second fixed seat (5).

4. The tripod mechanism for a drone according to claim 1, characterized in that: The outer surface of the first fixed seat (2) is rotatably connected to the second support shaft (17). The movable rod (4) is fixedly sleeved on the outer surface of the second support shaft (17). The outer surface of the second support shaft (17) is provided with a second thread. The second support shaft (17) is threadedly connected to the second thread at the second thread. A second washer is provided between the second nut (18) and the first fixed seat (2).

5. The tripod mechanism for a drone according to claim 2, characterized in that: Multiple protective covers are fixedly connected to the top outer surface of the connecting plate (6), and the multiple protective covers are respectively set on the outer surface of multiple airbags (13).

6. The tripod mechanism for a drone according to claim 1, characterized in that: The outer surface of the base frame (12) is fixedly connected with a shock-absorbing pad.

Images