A camera inspection device for wind blade observation

Abstract

The present invention proposes a camera inspection device for observing wind blades, comprising a carrying platform, a speed change device mounted on the bottom of the carrying platform, and a position shifting device mounted on the bottom of the carrying platform and connected to the speed change device. The carrying platform comprises a platform body, a connecting column mounted on the top of the platform body, a carried object mounted on the top of the connecting column, and a driven shaft bracket and a gearbox bracket mounted on the bottom of the platform body, near both ends of the platform body. The present invention uses a motor to drive the camera to rotate, causing the camera and the wind blade to be relatively stationary, and then inspects the wind blade using the camera. This eliminates the need to shut down the wind turbine when inspecting the wind blade using a drone, thereby improving inspection efficiency and reducing the labor intensity of inspectors.

Description

Technical Field

[0001] The present invention relates to the technical field of wind turbine observation, and in particular to a camera inspection device for wind blade observation. Background Art

[0002] Currently, regular blade inspections rely primarily on operators using handheld telescopes or drones. However, the maximum linear speed of a rotating wind turbine blade tip can reach 200-300 km / h. Therefore, operators often need to shut down the wind turbine to inspect blades using drones or handheld telescopes. Consequently, current drone inspection methods often reduce wind turbine power generation efficiency. Therefore, the present invention proposes a camera inspection device for observing wind turbine blades. Summary of the Invention

[0003] The purpose of the present invention is to propose a camera inspection device for wind blade observation, which does not require the wind turbine to be shut down for inspection, thereby solving the problem in the background technology that wind blades are inspected by drones, which requires the wind blades to be shut down for inspection, resulting in low power generation efficiency of the wind turbine.

[0004] In order to achieve the above-mentioned purpose, the present invention proposes a camera inspection device for wind blade observation, which includes a carrying platform, a speed changing device installed at the bottom of the carrying platform, and a position shifting device installed at the bottom of the carrying platform and connected to the speed changing device; a camera is installed on the speed changing device.

[0005] Optionally, the carrying platform includes a platform body, a connecting column installed on the top of the platform body, a carried object installed on the top of the connecting column, and a driven shaft bracket and a gearbox bracket installed at the bottom of the platform body, close to both ends of the platform body; the speed changing device is installed at the bottom of the platform body; the position shifting device is installed at the bottom of the platform body and is connected to the speed changing device.

[0006] Optionally, the speed changing device includes a transmission shaft, a driven shaft mounted on a driven shaft bracket, a camera swing arm with one end mounted on the transmission shaft and equipped with a camera, a weight swing arm with one end mounted on the driven shaft, a camera bracket coupling mounted on the other end of the camera swing arm, a weight coupling mounted on the other end of the weight swing arm, a gearbox mounted on the bottom of the platform body, a gear train arranged inside the gearbox and connected to the transmission shaft, and a motor connected to the gear train; the rotation directions of the transmission shaft and the driven shaft are opposite.

[0007] Optionally, the gear train includes a first gear and a second gear mounted on the motor, a third gear and a fourth gear mounted on the transmission shaft, and a fifth gear mounted on the driven shaft.

[0008] Optionally, the first gear is located between the second gear and the motor; the third gear is engaged with the first gear and the fifth gear; and the second gear is engaged with the fourth gear.

[0009] Optionally, a weight is mounted on the weight coupling; a camera bracket is mounted on the camera bracket coupling, and the camera is mounted on the camera bracket.

[0010] Optionally, the camera swing arm is provided with a transmission hole adapted to the transmission shaft and a camera connection hole adapted to the camera bracket connecting shaft; the weight swing arm is provided with a driven hole adapted to the driven shaft and a weight connection hole adapted to the weight connecting shaft.

[0011] Optionally, a gearbox end cover is installed on the front side of the gearbox, and a motor avoidance hole corresponding to the motor, a transmission shaft avoidance hole corresponding to the transmission shaft, and a driven shaft avoidance hole corresponding to the driven shaft are provided on the back side of the gearbox.

[0012] Optionally, the displacement device includes a motor cabin slide rail installed at the bottom of the platform body, a motor cabin installed on the motor cabin slide rail, an electric push rod bracket installed at the bottom of the platform body, and an electric push rod installed on the electric push rod bracket and connected to the motor cabin; the motor is fixed in the motor cabin.

[0013] Compared with the prior art, the present invention provides a camera inspection device for wind blade observation, which has the following beneficial effects:

[0014] This camera inspection device for observing wind blades uses a motor to drive the camera to rotate, so that the camera and the wind blades are relatively stationary, and then the wind blades are inspected by the camera, so that the wind turbine does not need to be shut down when the wind blades are inspected by a drone, thereby improving the inspection efficiency and reducing the labor intensity of the inspection personnel; further, through the setting of the gear train, gears with different transmission ratios can be set to engage, the output speed of the motor can be increased, and the demand for the motor can be reduced; further, through the setting of the transmission shaft and the driven shaft, in conjunction with the gear train, the camera and the weight can be rotated in opposite directions at the same time, and there is no need to use two motors for separate control, thereby avoiding the situation where the camera swing arm and the weight swing arm are not coordinated due to motor drive delay. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the camera inspection device for wind blade observation of the present invention.

[0016] Figure 2 It is a structural schematic diagram of the present invention from another perspective.

[0017] Figure 3 It is a schematic diagram of the structure of the present invention after the carried object is removed.

[0018] Figure 4 It is a schematic structural diagram of the speed change device of the present invention.

[0019] Figure 5 It is a structural schematic diagram of the gearbox of the present invention.

[0020] Figure 6 It is a structural schematic diagram of the displacement device of the present invention.

[0021] Figure 7 It is a structural schematic diagram of the camera swing arm of the present invention.

[0022] Figure 8 It is a structural schematic diagram of the weight swing arm of the present invention.

[0023] Markings in the figure: 1. Carrying platform; 11. Platform body; 12. Connecting column; 13. Carried object; 14. Driven shaft bracket; 15. Gearbox bracket; 2. Speed ​​change device; 21. Drive shaft; 22. Driven shaft; 23. Camera swing arm; 231. Drive hole; 232. Camera connection hole; 24. Weight swing arm; 241. Driven hole; 242. Weight connection hole; 25. Camera bracket shaft; 251. Camera bracket; 26. Weight connection Shaft; 261. Weight; 27. Gearbox; 271. Gearbox end cover; 272. Motor avoidance hole; 273. Drive shaft avoidance hole; 274. Drive shaft avoidance hole; 28. Motor; 3. Positioning device; 31. Motor compartment slide rail; 32. Motor compartment; 33. Electric push rod bracket; 34. Electric push rod; 4. Gear train; 41. First gear; 42. Second gear; 43. Third gear; 44. Fourth gear; 45. Fifth gear; 5. Camera. DETAILED DESCRIPTION

[0024] The following is a detailed description of the present invention in conjunction with the accompanying drawings and specific implementations. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0025] The camera inspection device for wind blade observation of the present invention can be applied to occasions such as wind blade observation, and of course can also be used in other similar application scenarios. The following is a detailed description of a camera inspection device for wind blade observation.

[0026] See attached Figure 1 — Figure 8, which is a structural schematic diagram of a preferred embodiment of a camera inspection device for wind blade observation according to the present invention. The camera inspection device for wind blade observation comprises a carrying platform 1, a speed change device 2 installed at the bottom of the carrying platform 1, and a shifting device 3 installed at the bottom of the carrying platform 1 and connected to the speed change device 2; a camera 5 is installed on the speed change device 2; wherein the carrying platform 1 comprises a platform body 11, a connecting column 12 installed at the top of the platform body 11, a carried object 13 installed at the top of the connecting column 12, and a driven shaft bracket 14 and a gearbox bracket 15 installed at the bottom of the platform body 11, close to both ends of the platform body 11; the speed change device 2 is installed at the bottom of the platform body 11, and the shifting device 3 is installed at the bottom of the platform body 11 and connected to the speed change device 2; in the present invention, a through hole is provided on the connecting column 12, an end face opening of the platform body 11 is concentrically connected to the through hole of the connecting column 12 by bolts, and a through hole is provided on the top of the driven shaft bracket 14, which is concentrically connected to the end face opening of the platform body 11 by bolts; the present invention is provided with a carrying platform 1 for the speed change device 2 , the shifting device 3, the camera 5 and the weight 261 provide an installation position and are connected to the drone, so that the speed changing device 2, the shifting device 3, the camera 5 and the weight 261 can be driven by the drone to move, and the operation and maintenance personnel do not need to use a telescope to inspect, thereby reducing the labor intensity of the operation and maintenance personnel; through the setting of the speed changing device 2, the camera swing arm 23 and the weight swing arm 24 can rotate in opposite directions at the same speed, so that the centripetal force and air disturbance generated by the rotation of the camera swing arm 23 and the weight swing arm 24 are offset, and the rotation speed of the camera 5 can be the same as the rotation speed of the wind blade, so that the camera 5 is stationary relative to the wind blade, so that the clarity of the blade taken by the camera 5 is guaranteed when shooting the blade; through the setting of the shifting device 3, the rotation speed of the camera 5 and the weight 261 can be adjusted, so that the camera 5 and the weight 261 can produce different linear speeds, so that different blade lengths of the wind blade can be photographed when the wind blade rotates.

[0027] See attached Figure 1 — Figure 3As shown, in the present invention, the speed change device 2 includes a transmission shaft 21, a driven shaft 22 mounted on the driven shaft bracket 14, a camera swing arm 23 mounted on the transmission shaft 21 at one end, a weight swing arm 24 mounted on the driven shaft 22 at one end, a camera bracket coupling 25 mounted on the other end of the camera swing arm 23, a weight coupling 26 mounted on the other end of the weight swing arm 24, a gearbox 27 mounted at the bottom of the platform body 11, a gear train 4 arranged inside the gearbox 27 and connected to the transmission shaft 21, and a motor 28 connected to the gear train 4; the present invention is achieved by the transmission shaft 21 The camera swing arm 23 is connected to the motor 28 so that the camera swing arm 23 can rotate; through the setting of the gear train 4, the motor 28 can drive the transmission shaft 21 and the driven shaft 22 to rotate, so that the camera swing arm 23 and the weight swing arm 24 can rotate, avoiding the situation where the transmission shaft 21 and the driven shaft 22 are driven by two motors respectively, and the camera swing arm 23 and the weight swing arm 24 are not coordinated due to the motor drive delay, and the output speed of the motor 28 can be increased; through the setting of the motor 28, a rotational power source is provided for the entire device.

[0028] See attached Figure 3 — Figure 4 As shown, in the present invention, the gear train 4 includes a first gear 41 and a second gear 42 mounted on the motor 28, a third gear 43 and a fourth gear 44 mounted on the transmission shaft 21, and a fifth gear 45 mounted on the driven shaft 22; wherein the first gear 41 is located between the second gear 42 and the motor 28, that is, the first gear 41 and the second gear 42 are both located on the output shaft of the motor 28, and the two end faces of the first gear 41 are in contact with the third gear 42 and the motor 28 respectively; the third gear 43 is meshed with the first gear 41 and the fifth gear; the second gear 43 is meshed with the first gear 41 and the fifth gear; 42 is meshed with the fourth gear 44; the present invention installs the first gear 41 and the second gear 42 on the motor 28 so that the rotation speeds of the first gear 41 and the second gear 42 are the same, and the third gear 43 and the fourth gear 44 are installed on the transmission shaft 21, and the first gear 41 and the third gear 43 can be meshed, and the second gear 42 and the fourth gear 44 can be meshed, so that when the electric push rod 34 drives the motor 28 to move, and the motor 28 drives the first gear 41 and the second gear 42 to move to change the transmission ratio, no interference will occur.

[0029] Specifically, when the motor 28 is in the initial position, the first gear 41 and the third gear 43 are meshed with each other, and the third gear 43 is meshed with the fifth gear 45, so as to transmit the power of the motor 28 to the transmission shaft 21 and the driven shaft 22. The transmission ratio of the meshing of the third gear 43 and the fifth gear 45 is 1, so that the transmission shaft 21 and the driven shaft 22 have the same size and opposite direction of rotation speed; when the camera needs to shoot images of different blade lengths when the fan blades rotate, the electric push rod 34 pushes the motor cabin 32 to move along the motor cabin slide rail 31, so that the coordination of the gear train 4 changes, that is, the second gear 42 and the fourth gear 44 are meshed, the first gear 41 and the third gear 43 are not meshed, and the third gear 43 and the fifth gear 45 are meshed with each other, thereby changing the speed. At the same time, the angle between the weight swing arm 24 and the camera swing arm 23 when they are installed is 180°, so that the weight swing arm 24 and the camera swing arm 23 offset the centripetal force generated by the two when they rotate in opposite directions at the same speed.

[0030] See attached Figure 1 — Figure 8 As shown, in the present invention, a weight 261 is installed on the weight coupling 26, a camera bracket 251 is installed on the camera bracket coupling 25, and a camera 5 is installed in the camera bracket 251; the present invention provides the weight 261, and since the camera swing arm 23 generates disturbances and centripetal force on the air when driving the camera 5 to rotate, the weight 261 rotates in the opposite direction relative to the camera 5 through the weight swing arm 24, and the air disturbance and centripetal force generated by the rotation of the camera 5 driven by the camera swing arm 23 can be offset, thereby ensuring the stability of the carried object 13, i.e., the drone, during flight.

[0031] See attached Figure 3 — Figure 8 As shown, in the present invention, the camera swing arm 23 is provided with a transmission hole 231 adapted to the transmission shaft 21 and a camera connecting hole 232 adapted to the camera bracket connecting shaft 25, and the weight swing arm 24 is provided with a driven hole 241 adapted to the driven shaft 22 and a weight connecting hole 242 adapted to the weight connecting shaft 26; the present invention limits the installation positions of the transmission shaft 21 and the camera bracket connecting shaft 25 respectively through the settings of the transmission hole 231 and the camera connecting hole 232, ensuring that the distance between the two is fixed, and limits the installation positions of the driven shaft 22 and the weight connecting shaft 26 in conjunction with the settings of the driven hole 241 and the weight connecting hole 242, ensuring that the distance between the driven shaft 22 and the weight connecting shaft 26 is the same as the distance between the transmission shaft 21 and the camera bracket connecting shaft 25, so that the rotational force arm during rotation is the same.

[0032] See attached Figure 1 — Figure 5As shown, in the present invention, a gearbox end cover 271 is installed on the front of the gearbox 27, and a motor avoidance hole 272 corresponding to the motor 28, a transmission shaft avoidance hole 273 corresponding to the transmission shaft 21, and a driven shaft avoidance hole 274 corresponding to the driven shaft 22 are provided on the back of the gearbox 27; the present invention seals the gearbox 27 through the provision of the end cover 271 to prevent dust from entering the interior of the gearbox 27 during operation and causing damage to the meshing gear train 4, thereby protecting the gear train 4; through the provision of the motor avoidance hole 272, the transmission shaft avoidance hole 273 and the driven shaft avoidance hole 274, the output shaft of the motor 28 can be connected to the gear train 4, and the transmission shaft 21 and the driven shaft 22 can also be connected to the gear train 4, so that the motor 28 can drive the transmission shaft 21 and the driven shaft 22 to rotate through the gear train 4.

[0033] See attached Figure 1 — Figure 6 As shown, in the present invention, the displacement device 3 includes a motor cabin slide rail 31 installed at the bottom of the platform body 11, a motor cabin 32 installed on the motor cabin slide rail 31, an electric push rod bracket 33 installed at the bottom of the platform body 11, and an electric push rod 34 installed on the electric push rod bracket 33 and connected to the motor cabin 32; wherein, the motor 28 is fixedly installed in the motor cabin 32; the present invention provides a moving basis for the motor cabin 32 through the setting of the motor cabin slide rail 31, so that the motor cabin 32 can move under the action of external force, and the gear train 4 can change the transmission ratio; through the setting of the electric push rod bracket 33, the electric push rod 34 can be supported and fixedly installed; through the setting of the electric push rod 34, it is connected to the motor cabin 32, providing a moving power source for the motor cabin 32, so that the electric push rod 34 can drive the motor cabin 32 to move, drive the motor 28 to move, so that the gear transmission ratio of the gear train 4 can be changed, so that the output speed of the motor 28 can be increased.

[0034] See attached Figure 1 — Figure 8 A method for using a camera inspection device for wind blade observation, comprising:

[0035] The first step is to install the connecting column 12 at the bottom of the object 13, install the platform body 11 at the bottom of the connecting column 12, and install the driven shaft bracket 14 and the gearbox bracket 15 on the bottom of the carrying platform body 1 with bolts;

[0036] Step 2: After completing the first step, installing the carrying platform 1, install the motor cabin slide rail 31 on the bottom of the carrying platform body 11, fix the motor 28 in the motor cabin 32, and then install the motor cabin 32 on the motor cabin slide rail 31. Fix the electric push rod 34 to the bottom of the platform body 11 through the electric push rod bracket 33, and connect the electric push rod 34 to the motor cabin 32;

[0037] Step 3: After completing the installation of the shifting device 2 in step 2, install the gearbox 27 in the gearbox bracket 15, pass the transmission shaft 21 through the transmission shaft avoidance hole 273 of the gearbox 27, transmit the driven shaft 22 to the driven shaft avoidance hole 274, and install it on the driven shaft bracket 14, then install the first gear 41 and the second gear 42 on the output shaft of the motor 28, install the third gear 43 and the fourth gear 44 on the transmission shaft 21, install the fifth gear 45 on the driven shaft 22, and install the gearbox end cover 271 on the front of the gearbox 27;

[0038] Step 4: Install the camera swing arm 23 on the transmission shaft 21 through the transmission hole 231, install the camera bracket coupling 25 on the camera swing arm 23 through the camera connecting hole 232, install the camera bracket 251 on the camera bracket coupling 25, install the camera 5 on the camera bracket 251, then install the weight swing arm 24 on the driven shaft 22 through the driven hole 241, install the weight coupling 26 on the midday swing arm 24 through the midday connecting hole 242, and finally install the midday 261 on the weight coupling 26;

[0039] Step 5: If shooting is required, the device is transported to the rotation center of the fan blade through the carried object 13, that is, the drone, and then the motor 28 is started. Under the action of the gear train 4, the camera swing arm 23 and the weight swing arm 24 rotate at the same speed and in opposite directions, so that the linear velocity of the camera 5 is the same as the maximum linear velocity of the fan blade, so that the camera 5 and the fan blade are relatively stationary. At the same time, the centripetal force and air disturbance generated by the rotation of the camera swing arm 23 and the weight swing arm 24 offset each other, ensuring the stable operation of the carried object 13, that is, the drone.

[0040] The gear train 4 in the third step needs to be calculated and selected according to the length of the fan blades. A camera inspection device suitable for the length of the fan blade is set up. Assuming that the maximum linear velocity of the fan blade tip is , where n is the fan speed, L is the length of the fan blade, then the maximum linear velocity of camera 5 is , where is the motor speed, is the length of the camera swing arm, and the transmission ratio of the first gear 41 and the third gear 43 in the gear train 4 is ,second gear The gear ratio of the meshing gear 42 and the fourth gear 44 is After the speed of the motor 28 and the length of the camera swing arm 23 are determined, the Finally, in summary, we can Generally speaking, when workers inspect the fan blades, they will inspect the middle and tip of the fan blades. , which is half of the maximum linear speed of the camera, so as to determine the transmission ratio of the gear transmission and select the types of each gear in the gear train.

[0041] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention falls within the protection scope of the present invention.

Claims

1. A camera inspection device for wind blade observation, characterized by: It comprises a carrying platform (1), a speed change device (2) installed at the bottom of the carrying platform (1), and a position shifting device (3) installed at the bottom of the carrying platform (1) and connected to the speed change device (2); a camera (5) is installed on the speed change device (2); The carrying platform (1) comprises a platform body (11), a connecting column (12) mounted on the top of the platform body (11), a carried object (13) mounted on the top of the connecting column (12), and a driven shaft bracket (14) and a gearbox bracket (15) mounted on the bottom of the platform body (11) and close to both ends of the platform body (11); the speed change device (2) is mounted on the bottom of the platform body (11); the position shifting device (3) is mounted on the bottom of the platform body (11) and connected to the speed change device (2); The speed change device (2) includes a transmission shaft (21), a driven shaft (22) mounted on a driven shaft bracket (14), a camera swing arm (23) with one end mounted on the transmission shaft (21) and mounted with a camera (5), a weight swing arm (24) with one end mounted on the driven shaft (22), a camera bracket connecting shaft (25) mounted on the other end of the camera swing arm (23), a weight connecting shaft (26) mounted on the other end of the weight swing arm (24), a gearbox (27) mounted on the bottom of the platform body (11), a gear train (4) arranged inside the gearbox (27) and connected to the transmission shaft (21), and a motor (28) connected to the gear train (4); the transmission shaft (21) and the driven shaft (22) rotate in opposite directions; The gear train (4) includes a first gear (41) and a second gear (42) mounted on the motor (28), a third gear (43) and a fourth gear (44) mounted on the transmission shaft (21), and a fifth gear (45) mounted on the driven shaft (22); The first gear (41) is located between the second gear (42) and the motor (28); the third gear (43) is meshed with the first gear (41) and the fifth gear (45); the second gear (42) is meshed with the fourth gear (44); By setting the speed change device (2), the camera swing arm (23) and the weight swing arm (24) can rotate in opposite directions at the same speed, thereby offsetting the centripetal force and air disturbance generated by the rotation of the camera swing arm (23) and the weight swing arm (24).

2. The camera inspection device for wind blade observation according to claim 1, characterized in that: A weight (261) is mounted on the weight coupling shaft (26); a camera bracket (251) is mounted on the camera bracket coupling shaft (25); and the camera (5) is mounted on the camera bracket (251).

3. The camera inspection device for wind blade observation according to claim 1, characterized in that: The camera swing arm (23) is provided with a transmission hole (231) adapted to the transmission shaft (21) and a camera connection hole (232) adapted to the camera bracket connecting shaft (25); the weight swing arm (24) is provided with a driven hole (241) adapted to the driven shaft (22) and a weight connection hole (242) adapted to the weight connecting shaft (26).

4. The camera inspection device for wind blade observation according to claim 1, characterized in that: A gearbox end cover (271) is mounted on the front surface of the gearbox (27), and a motor avoidance hole (272) corresponding to the motor (28), a transmission shaft avoidance hole (273) corresponding to the transmission shaft (21), and a driven shaft avoidance hole (274) corresponding to the driven shaft (22) are provided on the back surface of the gearbox (27).

5. The camera inspection device for wind blade observation according to claim 1, characterized in that: The displacement device (3) comprises a motor cabin slide rail (31) mounted on the bottom of the platform body (11), a motor cabin (32) mounted on the motor cabin slide rail (31), an electric push rod bracket (33) mounted on the bottom of the platform body (11), and an electric push rod (34) mounted on the electric push rod bracket (33) and connected to the motor cabin (32); the motor (28) is fixed in the motor cabin (32).

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