Unmanned aerial vehicle high-speed camera mounting structure for shooting fan blades

Abstract

The unmanned aerial vehicle high-speed camera mounting structure comprises an unmanned aerial vehicle body, the bottom of the unmanned aerial vehicle body is fixedly connected with a holder, a connecting frame is arranged below the unmanned aerial vehicle body, one side of the connecting frame is connected with the holder through a rotating shaft, and the other side of the connecting frame is connected with the holder through a rotating shaft. Two sets of positioning blocks used for clamping a high-speed camera are symmetrically arranged on the inner side of the connecting frame, and the positioning blocks are connected with the connecting frame through expansion air bags. The utility model relates to the technical field of unmanned aerial vehicles. According to the unmanned aerial vehicle high-speed camera mounting structure for shooting the fan blades, through the arranged expansion air bag, the positioning block can be pushed to clamp a high-speed camera, impact generated when gravel particles carried in high-speed airflow impact the connecting frame can be absorbed, the high-speed camera is protected, and the situation that the high-speed camera is directly impacted by gravel and damaged is avoided; the unmanned aerial vehicle high-speed camera mounting structure is more practical.

Description

Technical Field

[0001] The utility model relates to the technical field of unmanned aerial vehicles, in particular to a high-speed camera mounting structure of an unmanned aerial vehicle for photographing fan blades. Background Art

[0002] Wind turbines are electrical equipment that converts wind energy into mechanical work, which drives the rotor to rotate and ultimately outputs alternating current. When the high-speed air flows and the fan blades rotate, the sand carried in the airflow will erode the protective gel coat on the surface of the fan blades. When the gel coat is eroded and damaged, the resistance of the fan blades during rotation will increase, resulting in a decrease in the power generation efficiency of the wind turbine. Therefore, it is necessary to regularly inspect the degree of wear of the fan blades and provide maintenance for the fan blades.

[0003] Because the blades of wind turbines are generally large, the linear speed of the blades away from the main axis will increase exponentially when the blades rotate, which will make it more difficult to capture the edges of the blades. Therefore, high-speed cameras are usually used to capture the edges of the blades.

[0004] In the prior art, because wind turbines are very high, the distance between the high-speed camera and the capturing point is too large when capturing photos, which affects the capturing effect. Therefore, drones are usually used to carry cameras for capturing photos. When the drone captures the fan blades at close range, the high-speed camera will be exposed to the high-speed airflow. The wind and sand that can even wear the gel coat of the fan blades will impact the high-speed camera, causing damage to the surface of the high-speed camera and reducing its service life. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a high-speed camera mounting structure for an unmanned aerial vehicle for photographing fan blades, so as to solve the technical problems mentioned in the above background technology.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions:

[0007] A high-speed camera mounting structure for an unmanned aerial vehicle for photographing fan blades comprises an unmanned aerial vehicle body, a gimbal being fixedly connected to the bottom of the unmanned aerial vehicle body, a connecting frame being arranged below the unmanned aerial vehicle body, one side of the connecting frame being connected to the gimbal via a rotating shaft, two groups of positioning blocks for clamping a high-speed camera being symmetrically arranged on the inner side of the connecting frame, the positioning blocks being connected to the connecting frame via an inflatable airbag, and an outer side wall of the connecting frame being fixedly connected with an inflation nozzle and an exhaust nozzle in communication with the inflatable airbag at intervals from top to bottom.

[0008] Furthermore, the outer wall of the connecting frame is concavely formed with a connecting groove for connecting the inflatable airbag, and is fixedly connected to the inflatable airbag. The inflatable airbag has a protrusion on one side close to the positioning block to form an expansion part, and the expansion part extends out of the connecting frame and is fixedly connected to the positioning block.

[0009] Furthermore, the side wall of the expansion airbag located outside the connecting groove is provided with an anti-collision portion, and the anti-collision portion is provided with folds for expansion from top to bottom.

[0010] Furthermore, the exhaust nozzle is composed of an air pipe, a pressure valve, a connecting spring and a pressure rod. The air pipe has an opening on one side close to the inflatable airbag, which is concave to form a slide groove and is slidably connected to a pressure valve. A sealing ring is provided between the outer wall of the pressure valve and the slide groove. The pressure valve and the slide groove are connected by a connecting spring. A pressure rod for opening the pressure valve is slidably connected in the air pipe, and one end of the pressure rod is in contact with the pressure valve and the other end extends out of the air pipe.

[0011] Furthermore, the inner wall of the trachea is connected to a collar via a support rod, the pressure rod is slidably connected inside the collar, and the pressure rod is located on a side of the collar close to the pressure valve and is protruded to form an anti-slip portion.

[0012] Furthermore, a side of the positioning block away from the connecting frame is concave to form a placement groove for placing the high-speed camera, and an anti-slip rubber pad is fixedly connected to the inner side wall of the placement groove.

[0013] Furthermore, the top and bottom of one side of the positioning block close to the connecting frame are both raised to form a limiting portion, and the side wall of the connecting frame is provided with a slot for inserting the limiting portion and is slidably connected to the limiting portion.

[0014] In summary, the present invention includes at least one of the following beneficial technical effects:

[0015] 1. The high-speed camera mounting structure of a drone used for photographing fan blades can push the positioning block to clamp the high-speed camera through the inflatable airbag, and can also absorb the impact generated when the sand and gravel particles carried in the high-speed airflow hit the connecting frame, thereby providing protection for the high-speed camera and preventing the high-speed camera from being directly hit by sand and gravel and being damaged, making the drone high-speed camera mounting structure more practical;

[0016] 2. This drone high-speed camera mounting structure for photographing fan blades can limit the air pressure in the inflatable airbag through the exhaust nozzle, so as to avoid excessive air pressure in the inflatable airbag causing the positioning block to crush the high-speed camera, thereby improving the protection capability of the high-speed camera. In addition, the setting of the pressure rod in the exhaust nozzle can quickly discharge the air in the inflatable airbag after the drone body is recovered, so that the high-speed camera can be easily disassembled. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 The utility model is a structural schematic diagram of a UAV high-speed camera mounting structure for photographing fan blades.

[0019] Figure 2 The utility model is a schematic structural diagram of an inflatable airbag in a high-speed camera mounting structure of an unmanned aerial vehicle for photographing fan blades when it is contracted.

[0020] Figure 3 The utility model is a schematic structural diagram of an inflatable airbag in a high-speed camera mounting structure of an unmanned aerial vehicle for photographing fan blades when inflated.

[0021] Figure 4 The utility model is a structural schematic diagram of a connecting frame in a UAV high-speed camera mounting structure z for photographing fan blades.

[0022] Figure 5 The utility model is a schematic structural diagram of an exhaust nozzle in a high-speed camera mounting structure of an unmanned aerial vehicle for photographing fan blades.

[0023] In the figure, 1. UAV body; 2. gimbal; 3. connecting frame; 4. positioning block; 5. inflation airbag; 6. inflation nozzle; 7. exhaust nozzle; 71. air pipe; 72. pressure valve; 73. connecting spring; 74. pressure rod; 8. connecting groove; 9. expansion part; 10. anti-collision part; 11. slide groove; 12. sealing ring; 13. support rod; 14. collar; 15. anti-slip part; 16. placement groove; 17. anti-slip rubber pad; 18. limit part; 19. slot. DETAILED DESCRIPTION

[0024] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0025] Example:

[0026] Reference Figure 1 - Figure 5The utility model discloses a high-speed camera mounting structure for a drone for photographing fan blades, comprising a drone body 1, a gimbal 2 being fixedly connected to the bottom of the drone body 1, characterized in that a connecting frame 3 is arranged below the drone body 1, one side of the connecting frame 3 is connected to the gimbal 2 through a rotating shaft, two groups of positioning blocks 4 for clamping a high-speed camera are symmetrically arranged on the inner side of the connecting frame 3, the positioning blocks 4 are connected to the connecting frame 3 through an inflatable airbag 5, and an outer side wall of the connecting frame 3 is fixedly connected with an inflation nozzle 6 and an exhaust nozzle 7 communicated with the inflatable airbag 5 at intervals from top to bottom.

[0027] In this embodiment, when in use, the high-speed camera is placed in the connecting frame 3, and then the inflation nozzle 6 is used to inject gas into the expansion airbag 5 to inflate the expansion airbag 5 (such as Figure 3 As shown), when the expansion airbag 5 is expanded, the expansion airbag 5 will push the positioning block 4 to approach and clamp the high-speed camera, thereby achieving rapid fixation of the high-speed camera.

[0028] After the high-speed camera is fixed, the drone body 1 is started, and the drone body 1 is brought close to the blades of the wind turbine with the high-speed camera, and then the state of the blades is photographed with the high-speed camera. During the shooting process, the high-speed camera will be impacted by the wind and sand in the airflow, and the sand and gravel particles will hit the connecting frame 3. The connecting frame 3 and the high-speed camera are connected by the expansion airbag 5. The elasticity of the expansion airbag 5 can absorb the vibration caused by the impact, effectively reduce the interference of the sand and gravel particles on the high-speed camera, make the high-speed camera more stable during imaging, and improve the quality of imaging. After the sand and gravel particles are intercepted by the expansion airbag 5, they cannot cause damage to the surface of the camera, which can effectively provide protection for the high-speed camera.

[0029] After the high-speed camera has finished shooting, the drone body 1 is controlled to land, and the air in the inflatable airbag 5 is released by the exhaust nozzle 7, and then the inflatable airbag 5 shrinks under the action of elastic force (such as Figure 2 As shown), the positioning block 4 holding the high-speed camera is separated from the high-speed camera. At this time, the high-speed camera can be easily removed to complete the information collection of the wind turbine blades.

[0030] In a further preferred embodiment of the present invention, Figure 3 As shown, the outer wall of the connecting frame 3 is concavely formed with a connecting groove 8 for connecting the inflatable airbag 5, and is fixedly connected to the inflatable airbag 5. The inflatable airbag 5 has an inflatable portion 9 protruding from one side close to the positioning block 4. The inflatable portion 9 extends out of the connecting frame 3 and is fixedly connected to the positioning block 4.

[0031] In this embodiment, by providing a connection groove 8 on the outer wall of the connection frame 3 and disposing the expansion airbag 5 in the connection groove 8, the wind and sand can preferentially contact the expansion airbag 5 when impacting the connection frame 3, and the elastic force of the expansion airbag 5 can be used to offset the impact of the wind and sand, which can further improve the stability of the high-speed camera during the shooting process. Because the expansion airbag 5 is disposed on the outer side of the connection frame 3, in order to enable the expansion airbag 5 to push the positioning block 4 to clamp the high-speed camera during the inflation process, an expansion portion 9 extending out of the connection frame 3 is disposed on the side of the expansion airbag 5 close to the positioning block 4, see Figure 3 It can be found that when the expandable airbag 5 is inflated, the expansion portion 9 will also expand simultaneously, so that the expansion portion 9 can be used to push the positioning block 4 to approach and clamp the high-speed camera, so that the installation of the high-speed camera is more secure.

[0032] In a further preferred embodiment of the present invention, Figure 2 and Figure 3 As shown, the side wall of the inflatable airbag 5 located outside the connecting groove 8 is provided with an anti-collision portion 10, and the anti-collision portion 10 is provided with folds for expansion from top to bottom.

[0033] In this embodiment, since the inner wall of the inflatable airbag 5 will stretch and become thinner during the inflation process, the wear and scratch resistance of the inflatable airbag 5 will be weakened, so that the inflatable airbag 5 will crack and leak after long-term use of the mounting structure, affecting the protection and fixation of the high-speed camera. Therefore, an anti-collision portion 10 is provided on the outer side wall of the inflatable airbag 5, and the anti-collision portion 10 is provided with a plurality of folds from top to bottom (such as Figure 2 As shown, when the inflatable airbag 5 is inflated, the folds will be opened first (such as Figure 3 As shown), the inner wall thickness of the inflatable airbag 5 after expansion can be effectively increased.

[0034] And observe Figure 3 It can be found that because the connecting frame 3 is connected to the pan-tilt head 2 through a rotating shaft, the anti-collision portion 10 cannot be set in the area where the connecting frame 3 and the pan-tilt head 2 are connected. Therefore, the anti-collision portion 10 is not set on the side of the connecting frame 3 close to the pan-tilt head 2, which can avoid interfering with the operation of the pan-tilt head 2 when the inflatable airbag 5 is inflated.

[0035] In a further preferred embodiment of the present invention, Figure 5As shown, the exhaust nozzle 7 is composed of an air pipe 71, a pressure valve 72, a connecting spring 73 and a pressure rod 74. The air pipe 71 has an opening on one side close to the inflatable airbag 5, which is concave to form a slide groove 11 and is slidably connected to the pressure valve 72. A sealing ring 12 is provided between the outer wall of the pressure valve 72 and the slide groove 11. The pressure valve 72 is connected to the slide groove 11 through a connecting spring 73. A pressure rod 74 for opening the pressure valve 72 is slidably connected in the air pipe 71. One end of the pressure rod 74 is in contact with the pressure valve 72, and the other end extends out of the air pipe 71.

[0036] In this embodiment, as the internal airbag 5 is inflated, the internal air pressure will gradually increase, and when the expansion portion 9 of the expansion bag 5 contacts the positioning block 4, as the air pressure increases, the clamping force applied by the positioning block 4 to the high-speed camera will also increase. Therefore, in order to prevent the high-speed camera from being damaged by excessive pressure, a pressure valve 72 is connected to the exhaust nozzle 7. When the pressure exceeds the threshold of the pressure valve 72, the pressure valve 72 opens to discharge the air in the expansion bag 5. When a jet sound is generated in the trachea 71, the inflation of the inflation nozzle 6 can be stopped to complete the installation of the high-speed camera.

[0037] When the drone body 1 is recovered, the high-speed camera needs to be separated from the drone body 1, and then the content captured by the high-speed camera is transmitted to professional equipment for imaging analysis, so the inflatable airbag 5 needs to be actively deflated.

[0038] observe Figure 5 It can be found that because one end of the pressure rod 74 extends out of the trachea 71 and the other end contacts the pressure valve 72, during the process of pressing the pressure rod 74, the pressure rod 74 will squeeze the pressure valve 72 inward and make the pressure valve 72 escape from the slide groove 11. Subsequently, a gap for air discharge is generated between the pressure valve 72 and the slide groove 11, thereby realizing the deflation operation of the inflation airbag 5, which is convenient for the disassembly of the high-speed camera. After the inflation airbag 5 is deflated, the pressure applied to the pressure rod 74 is released. At this time, the pressure valve 72 loses pressure. Because the pressure valve 72 is pushed out of the slide groove 11 by the pressure rod 74, the connecting spring 73 will be stretched and the connecting spring 73 will be deformed to accumulate potential energy. Therefore, after the pressure applied by the pressure rod 74 disappears, the pressure valve 72 will be pulled back into the slide groove 11 under the contraction of the connecting spring 73, so that the pressure valve 72 blocks the trachea 71 again.

[0039] Because the pressure valve 72 slides in the slide groove 11, a gap remains between the pressure valve 72 and the slide groove 11. Therefore, in order to prevent air from leaking through the gap and causing the pressure applied by the inflated airbag 5 to the high-speed camera to be reduced, a sealing ring 12 is connected to the outer wall of the pressure valve 72. The sealing ring 12 is used to reduce the gap between the pressure valve 72 and the slide groove 11, thereby improving the sealing performance of the exhaust nozzle 7.

[0040] In a further preferred embodiment of the present invention, Figure 5 As shown, the inner wall of the air pipe 71 is connected to a collar 14 via a support rod 13, and the pressure rod 74 is slidably connected inside the collar 14. The pressure rod 74 is located on one side of the collar 14 close to the pressure valve 72 and is protruded to form an anti-slip portion 15.

[0041] In this embodiment, because the pressure rod 74 needs to slide in the trachea 71 and the air needs to be discharged from the trachea 71 when exhausting, a gap needs to be left between the pressure rod 74 and the trachea 71. However, the existence of the gap will cause the pressure rod 74 to loosen, making it easy for the pressure rod 74 to fall out of the trachea 71, resulting in the inflatable airbag 5 being unable to exhaust.

[0042] So observe Figure 5 It can be found that a collar 14 is connected to the air pipe 71 through a support rod 13, and a pressure rod 74 is slidably connected to the collar 14, so that air can be discharged through the gap of the support rod 13. In order to prevent the pressure rod 74 from falling out of the air pipe 71, an anti-falloff portion 15 is provided on the side of the pressure rod 74 located on the collar 14 close to the pressure valve 72. The collar 14 is used to block the movement of the anti-falloff portion 15, thereby preventing the pressure rod 74 from falling out of the air pipe 71.

[0043] In a further preferred embodiment of the present invention, Figure 2 As shown, a side of the positioning block 4 away from the connecting frame 3 is concavely formed with a placement groove 16 for placing a high-speed camera, and an anti-slip rubber pad 17 is fixedly connected to the inner side wall of the placement groove 16 .

[0044] In this embodiment, by providing a placement groove 16 for placing the high-speed camera, and connecting the placement groove 16 with an anti-skid rubber pad 17, the stability of the positioning block 4 after clamping the high-speed camera can be increased, making the installation of the high-speed camera more secure. The provision of the anti-skid rubber pad 17 can not only be used to enhance the friction between the positioning block 4 and the high-speed camera, further improving the stability of the high-speed camera after installation, but also enable flexible contact between the high-speed camera and the positioning block 4, which can further reduce the pressure on the high-speed camera, thereby improving the protection performance of the high-speed camera.

[0045] In a further preferred embodiment of the present invention, Figure 2 - Figure 4 As shown, the top and bottom of the positioning block 4 near the connecting frame 3 are both raised to form a limiting portion 18, and the side wall of the connecting frame 3 is provided with a slot 19 for inserting the limiting portion 18 and is slidably connected to the limiting portion 18.

[0046] In this embodiment, because the positioning block 4 is pushed close to and clamps the high-speed camera by the expansion of the expansion airbag 5, and the expansion airbag 5 itself has elasticity, the moving direction of the positioning block 4 is not fixed, so the positioning block 4 needs to be manually adjusted when clamping the high-speed camera, which increases the difficulty of installing the high-speed camera. Figure 3 It can be found that a limiting portion 18 is provided on the side of the positioning block 4 close to the connecting frame 3, and a slot 19 for inserting the limiting portion 18 is provided on the outer wall of the connecting frame 3, so that the positioning block 4 will be restricted by the limiting portion 18 and move horizontally and stably when moving, which is used to provide assistance to the moving path of the positioning block 4, so that the positioning block 4 can clamp the high-speed camera more easily.

[0047] The embodiments of this specific implementation method are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. Therefore, all equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A high-speed camera mounting structure for an unmanned aerial vehicle for photographing fan blades, comprising an unmanned aerial vehicle body (1), the bottom of the unmanned aerial vehicle body (1) being fixedly connected to a pan / tilt platform (2), characterized in that: A connecting frame (3) is arranged below the drone body (1); one side of the connecting frame (3) is connected to the gimbal (2) via a rotating shaft; two groups of positioning blocks (4) for clamping high-speed cameras are symmetrically arranged on the inner side of the connecting frame (3); the positioning blocks (4) and the connecting frame (3) are connected via an inflatable airbag (5); and an inflation nozzle (6) and an exhaust nozzle (7) in communication with the inflatable airbag (5) are fixedly connected to the outer wall of the connecting frame (3) at intervals from top to bottom.

2. The UAV high-speed camera mounting structure for photographing fan blades according to claim 1 is characterized in that: The outer wall of the connecting frame (3) is concavely formed with a connecting groove (8) for connecting the expansion airbag (5), and is fixedly connected to the expansion airbag (5); a side of the expansion airbag (5) close to the positioning block (4) is convexly formed with an expansion portion (9); the expansion portion (9) extends out of the connecting frame (3) and is fixedly connected to the positioning block (4).

3. The UAV high-speed camera mounting structure for photographing fan blades according to claim 2 is characterized in that: The side wall of the expansion airbag (5) located outside the connection groove (8) is provided with an anti-collision portion (10), and the anti-collision portion (10) is provided with folds for expansion from top to bottom.

4. The UAV high-speed camera mounting structure for photographing fan blades according to claim 1 is characterized in that: The exhaust nozzle (7) is composed of an air pipe (71), a pressure valve (72), a connecting spring (73) and a pressure rod (74). The air pipe (71) is concavely formed with a slide groove (11) at an opening on one side close to the expansion airbag (5), and is slidably connected to the pressure valve (72). A sealing ring (12) is provided between the outer wall of the pressure valve (72) and the slide groove (11). The pressure valve (72) and the slide groove (11) are connected via a connecting spring (73). A pressure rod (74) for opening the pressure valve (72) is slidably connected in the air pipe (71). One end of the pressure rod (74) is in contact with the pressure valve (72), and the other end extends out of the air pipe (71).

5. The UAV high-speed camera mounting structure for photographing fan blades according to claim 4 is characterized in that: The inner wall of the air pipe (71) is connected to a collar (14) via a support rod (13), the collar (14) is slidably connected with the pressure rod (74), and the pressure rod (74) is located on a side of the collar (14) close to the pressure valve (72) and is protruded to form an anti-slip portion (15).

6. The UAV high-speed camera mounting structure for photographing fan blades according to claim 1 is characterized in that: A side of the positioning block (4) away from the connecting frame (3) is inwardly concave to form a placement groove (16) for placing a high-speed camera, and an anti-slip rubber pad (17) is fixedly connected to the inner side wall of the placement groove (16).

7. The UAV high-speed camera mounting structure for photographing fan blades according to claim 6 is characterized in that: The top and bottom of one side of the positioning block (4) close to the connecting frame (3) are both raised to form a limiting portion (18), and a slot (19) for inserting the limiting portion (18) is provided on the side wall of the connecting frame (3) and is slidably connected to the limiting portion (18).

Images