Landing support leg of unmanned aerial vehicle aircraft

Abstract

The utility model discloses a landing supporting leg of an unmanned aerial vehicle, and relates to the technical field of unmanned aerial vehicles. A plurality of base plates are fixedly mounted at the bottom of the aircraft body, a fixing block is fixedly connected to the bottom of each base plate, a visual sensor is fixedly mounted at the bottom of each fixing block, a screw is rotatably mounted in each fixing block through a bearing, a motor is fixedly mounted on each fixing block, and an output shaft at the bottom of each motor is fixedly connected with the top end of the corresponding screw. And a controller is fixedly mounted in the fixed block at the top of the motor. The flatness condition of the ground is detected through the visual sensor, the angles of the supporting legs are automatically adjusted, so that the contact area between the aircraft and the ground is expanded through the supporting legs, meanwhile, the top of the outer side of the supporting frame or the bottom of the outer side of the supporting frame can be controlled to be attached to the ground, and the aircraft is more convenient to use. And therefore, the aircraft can be conveniently placed on the flat or uneven ground, and the supporting stability performance of the aircraft is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of unmanned aerial vehicle (UAV) aircraft, and in particular to a landing support leg of an unmanned aerial vehicle (UAV) aircraft. Background Art

[0002] An unmanned aerial vehicle is an unmanned aircraft that is controlled by a radio remote control device and a self-contained program control device, or is operated completely or intermittently autonomously by an onboard computer. It consists of a fuselage, wings and propellers, a power system, a flight control system, a communication system, and loading equipment. The landing gear is part of the fuselage to facilitate the landing of the unmanned aerial vehicle.

[0003] In the current field of UAV technology, the vibration of UAVs during takeoff and landing cannot be reduced well, and the landing gear is too heavy, which cannot meet people's usage needs well.

[0004] In the prior art, a Chinese patent with a publication number of CN214930585U is proposed to solve the above-mentioned technical problems. The technical solution disclosed in the patent document is as follows: a bottom frame of a drone, a servo motor is arranged on the left side of the inside of the bottom frame of the drone, a second gear is arranged above the first gear, a screw is arranged on the right side of the rotating shaft, a guide groove is arranged above the screw slider, a first locking pin is arranged below the screw slider, a second locking pin is arranged below the first connecting rod, a shock absorbing cylinder is arranged below the frame buckle, and a third locking pin is arranged on the right side of the third locking pin. There is a second connecting rod, and a hydraulic cylinder is arranged on the upper part of the shock-absorbing cylinder. Compared with the existing ordinary drones, the drone with a landing leg structure of the present invention is provided with a shock-absorbing cylinder, and a spring is arranged on the upper part of the shock-absorbing cylinder. When the wheel buckle is lifted and landed and receives impact force, the lifting column presses the spring upward through the first piston to have a first layer of shock absorption, and there is a second layer of shock absorption that compresses the air in the shock-absorbing cylinder. The two shock absorptions can greatly increase the shock absorption effect, but there will still be a problem that the area of ​​contact between the structure of the prior art and the ground is small, thereby affecting the stability of the placement of the drone aircraft. Utility Model Content

[0005] The purpose of the utility model is to provide a landing support leg for a UAV aircraft to solve the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] The cam is provided with a plurality of support plates, each of which is fixedly connected to a fixing block at the bottom thereof; a visual sensor is fixedly installed at the bottom of the fixing block; a screw is rotatably installed inside the fixing block through a bearing; a motor is fixedly installed on the fixing block; an output shaft at the bottom of the motor is fixedly connected to the top of the screw; a controller is fixedly installed inside the fixing block at the top of the motor; a slider is threadedly connected to the periphery of the screw; a plurality of push plates are evenly arranged and installed along the circumferential direction on the periphery of the slider; a plurality of rotating members are evenly arranged and installed along the circumferential direction on the periphery of the fixing block; a pair of limiting plates are rotatably installed on both sides of each rotating member; each limiting plate is fixedly connected to the outer wall of the fixing block; a torsion spring is arranged between each limiting plate and each rotating member; a connecting plate is fixedly installed on the inner side of each rotating member; the bottom surface of each connecting plate is pressed against the top surface of each push plate; and a supporting foot is fixedly connected to the outer side of each rotating member.

[0008] When the main body of the aircraft descends downward and approaches the ground, the visual sensor can be installed to detect the unevenness of the ground, and then the detection result can be transmitted to the controller. The controller can process the detection situation of the visual sensor. When the visual sensor detects that the ground is relatively flat, the motor can be controlled. In the process of the motor driving its output shaft to rotate, it can drive the screw to rotate synchronously, and at the same time drive the slider to move upward, and drive the push plate to move upward, squeeze the connecting plate outward, so that the connecting plate and the supporting foot can rotate outward with the rotating part as the center of the circle, so that the outer side of the supporting foot rotates to a state parallel to the ground, so that the four anti-skid pads arranged on the periphery of a fixed block can fit with the ground. A total of sixteen anti-skid pads can be used to support the main body of the aircraft, thereby expanding the contact area between the main body of the aircraft and the ground and improving the stability of the support for the main body of the aircraft. When the surface is uneven, the motor can be used to drive the screw to rotate and move the slider to the highest position outside the screw, and the push plate can be used to squeeze the connecting plate outward, so that the supporting foot can rotate outward with the rotating member as the center of the circle, so that the four friction blocks arranged on the periphery of a fixed block can fit with the ground, and a total of sixteen friction blocks can be used to support the aircraft body, thereby expanding the contact area between the aircraft body and the ground, and improving the stability of the aircraft body support. The aircraft body is supported by the anti-slip pad and the friction block respectively, thereby expanding the applicable scope of the fixed block support work and improving the effect of supporting the aircraft body; after the aircraft body rises upward and away from the ground, the visual sensor cannot detect the ground, and the controller controls the motor to drive the screw to rotate in the opposite direction, and drives the slider and the push plate to move downward, and the elastic force of the torsion spring can rotate the rotating member upward, so that the supporting foot rotates back to the position as shown in the figure. Figure 1 and Figure 2 The initial state.

[0009] A further improvement of the technical solution of the utility model is that a friction block is fixedly installed on the outer side of each supporting foot away from the fixing block.

[0010] By adopting the above technical solution, in this solution, the friction between the outer side of the supporting foot and the ground can be enlarged by installing the friction block, thereby improving the stability of the placement of the aircraft body.

[0011] A further improvement of the technical solution of the utility model is that a groove is formed on the outer surface of each friction block away from the supporting leg.

[0012] The above technical solution is adopted. In this solution, by providing a groove on the surface of the friction block, the friction between the friction block and the ground is further increased, thereby improving the stability of the placement of the aircraft body.

[0013] A further improvement of the technical solution of the utility model is that an anti-skid pad is fixedly installed on the outer side of each supporting foot at the bottom of each friction block.

[0014] By adopting the above technical solution, in this solution, the contact area between the supporting feet and the ground can be expanded by installing the anti-skid pad, thereby achieving an anti-skid effect.

[0015] A further improvement of the technical solution of the utility model is that the top of each supporting foot is fixedly connected to the top of each connecting plate via a reinforcing plate.

[0016] By adopting the above technical solution, in this solution, the connection area between the supporting foot and the connecting plate can be increased by installing a reinforcing plate, so as to prevent the supporting foot from being bent due to excessive force, thereby reinforcing the supporting foot.

[0017] A further improvement of the technical solution of the utility model is that a pair of limit blocks are fixedly installed on both sides of each push plate, and a limit rod runs through the interior of each limit block, and the top and bottom ends of the limit rod are fixedly connected to the inner wall of the fixed block.

[0018] The above-mentioned technical solution is adopted. In this solution, the push plate and the limit rod can be connected by installing a limit block, and the limit rod can be used to guide and limit the sliding trajectory of the push plate to prevent the slider from rotating synchronously with the screw rod, thereby ensuring that the push plate can squeeze the connecting plate outward, and at the same time, it can prevent the push plate from being broken by the reverse pressure of the connecting plate, thereby protecting the push plate.

[0019] A further improvement of the technical solution of the utility model is that the fixed blocks are fixedly connected to each other through connecting rods.

[0020] By adopting the above technical solution, in this solution, the fixing blocks can be connected to each other by installing connecting rods, so that the four fixing blocks are formed into a whole, thereby improving the stability of the fixing blocks.

[0021] A further improvement of the technical solution of the utility model is that a protective plate is fixedly installed on the outer side of the fixing block away from the connecting rod, and the protective plate and the controller are located on the same horizontal line.

[0022] The above technical solution is adopted. In this solution, the outer wall of the fixed block outside the controller can be shielded by installing a protective plate, so that the controller can be protected. By opening the protective plate, the controller can be repaired and processed.

[0023] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0024] 1. The utility model provides a landing support leg for an unmanned aerial vehicle. When the main body of the aircraft is close to the ground, the flatness of the ground can be detected by using a visual sensor and a controller. When it is detected that the ground is relatively flat, the push plate can be driven to move upward by using a motor, a screw and a slider, and at the same time, the connecting plate and the supporting leg are squeezed to rotate outward with the rotating member as the center, so that each anti-slip pad fits with the ground, thereby expanding the contact area between the main body of the aircraft and the ground, and improving the stability of the support for the main body of the aircraft.

[0025] 2. The utility model provides a landing support leg for an unmanned aerial vehicle. When the visual sensor detects that the ground is an uneven surface, the motor and the screw are used to drive the slider to move to the highest position outside the screw, and the push plate is used to squeeze the connecting plate and the support leg to rotate outward with the rotating part as the center, so that each friction block fits with the ground, thereby expanding the contact area between the aircraft body and the ground, improving the stability of the support for the aircraft body, and then enabling the aircraft body to be stably placed on the ground of different shapes, thereby expanding the scope of application of the device.

[0026] 3. The utility model provides a landing support leg for an unmanned aerial vehicle. By installing a reinforcement plate, the support leg can be prevented from being bent due to excessive force, thereby reinforcing the support leg. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The utility model will be further described below in conjunction with the accompanying drawings.

[0028] Figure 1 It is a three-dimensional diagram of the utility model;

[0029] Figure 2 It is a schematic diagram of a partial explosion structure of a fixed block section of the utility model;

[0030] Figure 3 It is a schematic diagram of a partial explosion structure of a fixed block section of the utility model;

[0031] Figure 4 It is a schematic diagram of the local structure of the screw of the utility model;

[0032] Figure 5 For the utility model Figure 4 The enlarged structural diagram at A in the middle;

[0033] Figure 6 This is a schematic diagram of the partial structure of the support foot of the utility model;

[0034] Figure 7 It is a schematic diagram of the local structure of the connecting plate of the utility model.

[0035] In the figure: 1. Aircraft body; 2. Fixed block; 201. Pad; 202. Protective plate; 3. Connecting rod; 4. Controller; 5. Support foot; 501. Anti-skid pad; 502. Friction block; 6. Screw; 601. Motor; 7. Connecting plate; 8. Limiting plate; 9. Limiting rod; 901. Limiting block; 10. Sliding block; 11. Pushing plate; 12. Rotating part; 13. Reinforcement plate; 14. Visual sensor. DETAILED DESCRIPTION

[0036] The present invention is further described in detail below in conjunction with the embodiments:

[0037] Example 1

[0038] like Figure 1 , Figure 2 and Figure 4As shown, the utility model provides a landing leg of an unmanned aerial vehicle, including an aircraft body 1; a plurality of pads 201 are fixedly installed at the bottom of the aircraft body 1, a fixed block 2 is fixedly connected to the bottom of each pad 201, a visual sensor 14 is fixedly installed at the bottom of the fixed block 2, a screw 6 is rotatably installed inside the fixed block 2 through a bearing, a motor 601 is fixedly installed on the fixed block 2, an output shaft at the bottom of the motor 601 is fixedly connected to the top of the screw 6, a controller 4 is fixedly installed inside the fixed block 2 at the top of the motor 601, a slider 10 is threadedly connected to the periphery of the screw 6, a plurality of push plates 11 are evenly arranged along the circumferential direction on the periphery of the slider 10, and a plurality of push plates 11 are evenly arranged along the circumferential direction on the periphery of the fixed block 2 A number of rotating parts 12 are evenly arranged, and a pair of limit plates 8 are rotatably installed on both sides of each rotating part 12. Each limit plate 8 is fixedly connected to the outer wall of the fixed block 2, and a torsion spring is arranged between each limit plate 8 and each rotating part 12. A connecting plate 7 is fixedly installed on the inner side of each rotating part 12, and the bottom surface of each connecting plate 7 is pressed against the top surface of each push plate 11. The outer side of each rotating part 12 is fixedly connected to a supporting foot 5, and a friction block 502 is fixedly installed on the outer side of each supporting foot 5 away from the fixed block 2. A groove is provided on the outer surface of each friction block 502 away from the supporting foot 5, and an anti-slip pad 501 is fixedly installed on the outer side of each supporting foot 5 at the bottom of each friction block 502.

[0039] In this embodiment, when the aircraft body 1 descends downward and approaches the ground, the visual sensor 14 can be installed to detect the unevenness of the ground, and then the detection result is transmitted to the controller 4. The controller 4 can process the detection situation of the visual sensor 14. When the visual sensor 14 detects that the ground is relatively flat, the motor 601 can be controlled. In the process of the motor 601 driving its output shaft to rotate, the screw 6 can be driven to rotate synchronously, and the slider 10 is driven to move upward, and the push plate 11 is driven to move upward, and the connecting plate 7 is squeezed outward, so that the connecting plate 7 and the supporting foot 5 can be rotated outward with the rotating member 12 as the center of the circle, so that the outer side of the supporting foot 5 is rotated to a state parallel to the ground, so that the four anti-skid pads 501 arranged on the periphery of a fixed block 2 can fit with the ground. A total of sixteen anti-skid pads 501 can be used to support the aircraft body 1, thereby expanding the contact area between the aircraft body 1 and the ground and improving the stability of the support for the aircraft body 1. After the uneven surface is formed, the motor 601 can be used to drive the screw rod 6 to rotate, and the slider 10 can be moved to the highest position outside the screw rod 6. At the same time, the push plate 11 is used to squeeze the connecting plate 7 outward, so that the supporting foot 5 can rotate outward with the rotating member 12 as the center of the circle, so that the four friction blocks 502 arranged outside the fixed block 2 can fit with the ground. A total of sixteen friction blocks 502 can be used to support the aircraft body 1, thereby expanding the contact area between the aircraft body 1 and the ground and improving the support of the aircraft. The stability of the support of the main body 1 is achieved by supporting the aircraft main body 1 through the anti-skid pad 501 and the friction block 502, thereby expanding the applicable scope of the support work of the fixed block 2 and improving the support effect of the aircraft main body 1; after the aircraft main body 1 rises upward and moves away from the ground, the visual sensor 14 cannot detect the ground, and the controller 4 controls the motor 601 to drive the screw 6 to rotate in the opposite direction, and drives the slider 10 and the push plate 11 to move downward, and the elastic force of the torsion spring can rotate the rotating member 12 upward, so that the supporting foot 5 rotates back to the position as shown in the figure. Figure 1 and Figure 2 The initial state.

[0040] Example 2

[0041] like Figure 2 and Figure 4 As shown, based on Example 1, the utility model provides a technical solution: preferably, the top of each supporting foot 5 is fixedly connected to the top of each connecting plate 7 via a reinforcing plate 13.

[0042] In this embodiment, the reinforcing plate 13 is installed to increase the connection area between the supporting leg 5 and the connecting plate 7 , thereby preventing the supporting leg 5 from being bent due to excessive force, thereby reinforcing the supporting leg 5 .

[0043] Example 3

[0044] like Figure 2 , Figure 4 and Figure 5 As shown, based on Example 2, the utility model provides a technical solution: preferably, a pair of limit blocks 901 are fixedly installed on both sides of each push plate 11, and a limit rod 9 runs through the interior of each limit block 901, and the top and bottom ends of the limit rod 9 are fixedly connected to the inner wall of the fixed block 2.

[0045] In this embodiment, the push plate 11 can be connected to the limit rod 9 by installing the limit block 901, and the limit rod 9 can be used to guide and limit the sliding trajectory of the push plate 11, thereby preventing the slider 10 from rotating synchronously with the screw rod 6, thereby ensuring that the push plate 11 can squeeze the connecting plate 7 outward, and at the same time, preventing the push plate 11 from being broken due to the reverse pressure of the connecting plate 7, thereby protecting the push plate 11.

[0046] Example 4

[0047] like Figure 1 , Figure 2 and Figure 3 As shown, based on Example 3, the utility model provides a technical solution: preferably, the fixed blocks 2 are fixedly connected to each other through connecting rods 3, and a protective plate 202 is fixedly installed on the outer side of the fixed blocks 2 away from the connecting rods 3, and the protective plate 202 and the controller 4 are located on the same horizontal line.

[0048] In this embodiment, by installing the connecting rod 3, the fixed blocks 2 can be connected to each other, and the four fixed blocks 2 can be formed into a whole, thereby improving the stability of the fixed blocks 2. By installing the protective plate 202, the outer wall of the fixed block 2 outside the controller 4 can be shielded, thereby protecting the controller 4. By opening the protective plate 202, the controller 4 can be easily repaired.

[0049] The following is a detailed description of the working principle of the landing legs of the UAV aircraft.

[0050] like Figure 1-Figure 7As shown, when the aircraft body 1 needs to land, as the aircraft body 1 keeps approaching the ground, the visual sensor 14 can be used to detect the unevenness of the ground, and the detection result can be transmitted to the controller 4, and then the controller 4 can be used to process the detection situation of the visual sensor 14. When it is detected that the ground is relatively flat, the motor 601 can be used to drive the screw 6 to rotate synchronously, and at the same time drive the slider 10 to move upward, and the push plate 11 can be used to squeeze the connecting plate 7 outward, so that the supporting foot 5 rotates outward with the rotating member 12 as the center of the circle, and the outer side of the supporting foot 5 is rotated to a state parallel to the ground, so that each anti-skid pad 501 fits against the ground to support the aircraft body 1; when the visual sensor 1 After detecting that the ground surface is uneven, the motor 601 can be used to drive the screw rod 6 to rotate, drive the slider 10 to move upward to the highest position outside the screw rod 6, and use the push plate 11 to squeeze the connecting plate 7 outward, drive the support foot 5 to rotate outward with the rotating member 12 as the center, so that each friction block 502 fits with the ground to support the aircraft body 1; when the aircraft body 1 rises upward and away from the ground, the visual sensor 14 cannot detect the ground, and the controller 4 controls the motor 601 to drive the screw rod 6 to rotate in the opposite direction, drive the slider 10 and the push plate 11 to move downward to the initial position, and use the torsion spring to rotate the rotating member 12 upward to retract the support foot 5 to the initial state.

[0051] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A landing leg for an unmanned aerial vehicle, comprising an aerial vehicle body (1); characterized in that: A plurality of pads (201) are fixedly installed at the bottom of the aircraft body (1), and a fixed block (2) is fixedly connected to the bottom of each pad (201). A visual sensor (14) is fixedly installed at the bottom of the fixed block (2). A screw (6) is rotatably installed inside the fixed block (2) through a bearing. A motor (601) is fixedly installed on the fixed block (2). The output shaft at the bottom of the motor (601) is fixedly connected to the top of the screw (6). A controller (4) is fixedly installed inside the fixed block (2) at the top of the motor (601). A slider (10) is threadedly connected to the periphery of the screw (6). The periphery of the slider (10) is circularly A plurality of push plates (11) are evenly arranged and installed in the circumferential direction, and a plurality of rotating parts (12) are evenly arranged and installed in the circumferential direction on the periphery of the fixed block (2). A pair of limit plates (8) are rotatably installed on both sides of each rotating part (12), and each limit plate (8) is fixedly connected to the outer wall of the fixed block (2). A torsion spring is arranged between each limit plate (8) and each rotating part (12). A connecting plate (7) is fixedly installed on the inner side of each rotating part (12), and the bottom surface of each connecting plate (7) is pressed against the top surface of each push plate (11), and a supporting foot (5) is fixedly connected to the outer side of each rotating part (12).

2. The landing support for an unmanned aerial vehicle according to claim 1, characterized in that: A friction block (502) is fixedly mounted on the outer side of each supporting foot (5) away from the fixing block (2).

3. The landing leg of a UAV according to claim 2, characterized in that: Each friction block (502) has a groove on its outer surface away from the supporting leg (5).

4. The landing support leg of a UAV according to claim 3, characterized in that: An anti-skid pad (501) is fixedly mounted on the outer side of each supporting foot (5) at the bottom of each friction block (502).

5. The landing support for a UAV according to claim 4, characterized in that: The top of each supporting foot (5) is fixedly connected to the top of each connecting plate (7) via a reinforcing plate (13).

6. The landing support leg of a UAV according to claim 5, characterized in that: A pair of limit blocks (901) are fixedly mounted on both sides of each push plate (11), and a limit rod (9) runs through the interior of each limit block (901), and the top and bottom ends of the limit rod (9) are fixedly connected to the inner wall of the fixed block (2).

7. The landing support for a UAV according to claim 1, characterized in that: The fixing blocks (2) are fixedly connected to each other via a connecting rod (3).

8. The landing support for a UAV according to claim 7, characterized in that: A protective plate (202) is fixedly mounted on the outer side of the fixed block (2) away from the connecting rod (3), and the protective plate (202) and the controller (4) are located on the same horizontal line.

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