Wind turbine blade damage detection device and method

Abstract

The present invention relates to the technical field of damage detection devices, and specifically to a wind turbine blade damage detection device and method, comprising a photographing device and a vibration detector, and also comprising an installation component; the installation component comprises a connecting frame, a rotating frame, an extending bracket, a driving component and a matching component; the connecting frame is arranged on the rotation center axis of the wind turbine blade through a corresponding installation structure, the rotating frame is rotatably installed on the connecting frame, the extending bracket is slidably installed on the connecting bracket, the driving component is connected to the connecting frame for correspondingly driving the rotating frame and the extending bracket, the matching component is connected to the extending bracket for realizing the matching between the vibration detector and the corresponding blade of the unit, and can perform a certain degree of detection on the internal damage of the wind turbine blade through the provided components, thereby reducing the probability of safety accidents.

Description

Technical Field

[0001] The present invention relates to the technical field of damage detection devices, and in particular to a device and method for detecting damage to blades of a wind turbine generator set. Background Art

[0002] Wind turbine blades operate for a long time under harsh climatic conditions and are easily affected by multiple factors such as wind, sand, rain, and atmospheric corrosion, resulting in surface or internal damage. If these damages are not discovered and handled in time, the overall performance of the unit may be affected, and even safety accidents may occur. Therefore, it is necessary to regularly inspect the blades of wind turbines and handle them in time when blade damage is detected;

[0003] When inspecting the blades of wind turbines for damage, drones equipped with high-definition cameras can now be used to directly photograph the blades, and then visually determine whether there are cracks and wear on the blade surface, replacing traditional manual inspections and making the entire operation safer and more convenient.

[0004] When using the high-definition camera on the drone for shooting and inspection, the quality of the photos and videos of the blades is greatly limited by the weather and light conditions, and only the surface defects of the blades can be detected. As a result, the actual detection capabilities of the existing detection devices are very limited during inspection. It is impossible to monitor whether there is damage inside the blades. As a result, when there is damage inside the blades, it is impossible to detect it in time. The damage can only be detected when it worsens and eventually affects the appearance of the blades. This will greatly increase the probability of safety accidents. Summary of the invention

[0005] The object of the present invention is to provide a wind turbine blade damage detection device and method, which can detect the internal damage of the wind turbine blades to a certain extent through the provided components, thereby reducing the probability of safety accidents.

[0006] To achieve the above-mentioned object, the present invention provides a wind turbine blade damage detection device and method, including a photographing device and a vibration detector, and also including a mounting assembly;

[0007] The installation assembly includes a connecting frame, a rotating frame, an extending bracket, a driving component and a matching component;

[0008] The connecting frame is arranged on the rotation center axis of the blades of the wind turbine unit through a corresponding mounting structure, the rotating frame is rotatably mounted on the connecting frame, the extending bracket is slidably mounted on the connecting bracket, the driving component is connected to the connecting frame for correspondingly driving the rotating frame and the extending bracket, and the matching component is connected to the extending bracket for achieving matching between the vibration detector and the corresponding unit blade.

[0009] Wherein, the driving component includes a one-way rotation mechanism and a screw driving mechanism. The one-way rotation mechanism is installed in the connecting frame to realize one-way rotation drive of the rotating frame; the screw driving mechanism is installed in the rotating frame to drive the extended bracket to move.

[0010] Among them, the matching components include a sliding frame, a disbursement frame, a loading frame, a gear rack driving mechanism and a pushing component, the sliding frame is slidably installed on the extending frame; the disbursement frame is slidably installed on the sliding frame; the vibration detector is slidably installed on the loading frame; two groups of the gear rack driving mechanisms are respectively connected to the disbursement frame and the sliding frame, and are used to drive the sliding frame and the disbursement frame respectively; the pushing component is connected to the loading frame, and is used to drive the loading frame to move out of the disbursement frame.

[0011] Among them, the pushing component includes a cylinder driving frame, an intermediate bracket and a spring, the cylinder driving frame is installed on the dispensing frame; the intermediate bracket is slidably connected to the cylinder driving frame and is slidably connected to the loading frame; the spring is provided at the connection position between the intermediate bracket and the cylinder driving frame and the connection position between the intermediate bracket and the loading frame, for realizing the up, down, left, and right sliding of the loading frame relative to the cylinder driving frame and the subsequent resetting.

[0012] Among them, the ejection component also includes an electric push rod, an adsorption chassis and a control pump. The electric push rod is connected to the vibration detector and installed in the loading frame; the adsorption chassis is installed on the side of the loading frame; the control pump is connected to the adsorption chassis and installed in the loading frame.

[0013] Among them, the installation assembly also includes a rotating ring, a transparent installation box, a rotation adjustment mechanism and a rotating driving component, the rotating ring is rotatably mounted on the sliding frame; the transparent installation box is fixedly installed on the rotating ring; the rotation adjustment mechanism is connected to the shooting device and installed on the transparent installation box; the rotating driving component is connected to the rotating ring for driving the rotating ring.

[0014] Among them, the rotating driving component includes a fixed gear ring, a driving gear and a driving motor, the fixed gear ring is fixedly installed on one side of the rotating ring; the driving gear is meshed with the fixed gear ring and is rotatably installed on the sliding frame; the output shaft of the driving motor is connected to the driving gear, and the driving motor is fixedly installed on the sliding frame.

[0015] The present invention provides a wind turbine blade damage detection device and method, wherein the shooting device mainly uses a high-definition camera in combination with a corresponding infrared thermal imaging detection mechanism to shoot and detect the wind turbine blades, and the vibration detector detects internal damage to the blades by sensing the vibrations generated during the operation of the blades. The core idea of ​​damage detection through vibration is that modal parameters (such as frequency, vibration mode, damping, etc.) are functions of the physical properties of the structure (such as mass, stiffness, etc.). When the physical properties of the structure change, the modal properties will inevitably change. Therefore, the structure can be tested for vibration, data can be collected, and signal analysis and processing can be performed. The dynamic characteristics of the structure can be determined by the input and output of the system, and then it can be inferred whether the physical properties of the structure have changed, thereby determining whether the structure is damaged.

[0016] Since the sensor provided by the vibration detector needs to be attached to the outer surface of the detection part during detection, the corresponding mounting assembly can be used to match the vibration detector with the blades during operation. The connecting frame is mounted on the rotation axis of the blades of the wind turbine generator set through mounting structures such as brackets, so that the rotation of the rotating frame on the connecting frame can be maintained on the same rotation axis as the rotation of the blades of the wind turbine generator set;

[0017] The extending bracket is slidably mounted on the rotating frame, and the movement of the extending bracket on the rotating frame enables the user to adjust the matching position of the vibration detector, and then the matching of the vibration detector and the corresponding blade is completed through the matching component. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0019] Figure 1 It is a schematic diagram of the overall structure of the wind turbine blade damage detection device and method of the present invention.

[0020] Figure 2 It is a schematic diagram of the installation structure of the shooting equipment of the present invention.

[0021] Figure 3 It is a structural schematic diagram of the screw drive mechanism of the present invention.

[0022] Figure 4 It is a structural schematic diagram of the one-way rotation mechanism of the present invention.

[0023] Figure 5 It is a schematic diagram of the internal structure of the one-way rotation mechanism of the present invention.

[0024] Figure 6 It is a schematic diagram of the structure of the sliding frame of the present invention.

[0025] Figure 7 It is a structural schematic diagram of the rotating driving component of the present invention.

[0026] Figure 8 It is a structural schematic diagram of the cylinder drive frame of the present invention.

[0027] Fig. 9 It is a schematic diagram of the installation structure of the intermediate bracket of the present invention.

[0028] Fig.10 It is a schematic structural diagram of a loading frame of the present invention when it is cut apart.

[0029] Fig.11 The present invention is a flow chart of a method for detecting blade damage of a wind turbine generator set.

[0030] In the figure: 1-photographing device, 2-vibration detector, 3-connecting frame, 4-rotating frame, 5-extending bracket, 6-driving component, 7-matching component, 8-rotating ring, 9-transparent mounting box, 10-rotation adjustment mechanism, 11-rotation driving component, 601-one-way rotation mechanism, 602-screw driving mechanism, 701-sliding frame, 702-disbursement frame, 703-loading frame, 704-gear rack driving mechanism, 705-pushing component, 706-cylinder driving frame, 707-intermediate bracket, 708-spring, 709-electric push rod, 710-adsorption chassis, 711-control pump, 1101-fixed gear ring, 1102-driving gear, 1103-driving motor. DETAILED DESCRIPTION

[0031] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0032] In the description of the present invention, it should be understood that “plurality” means two or more than two, unless otherwise clearly and specifically defined.

[0033] See also Figures 1 to 10The present invention provides a wind turbine blade damage detection device and method: comprising a photographing device 1, a vibration detector 2 and an installation assembly, wherein the installation assembly comprises a connecting frame 3, a rotating frame 4, an extending bracket 5, a driving member 6 and a matching member 7, wherein the driving member 6 comprises a one-way rotating mechanism 601 and a screw driving mechanism 602, wherein the matching member 7 comprises a sliding frame 701, a disbursement frame 702, a loading frame 703, a gear rack driving mechanism 704 and a pushing component 705, wherein the pushing component 705 comprises a cylinder driving frame 706, an intermediate bracket 707 and a spring 708, wherein the pushing component 705 also comprises an electric push rod 709, adsorption chassis 710 and control pump 711, through the above-mentioned scheme, solve the problem that when using the high-definition camera carried by the drone for shooting and inspection, the quality of the photos and videos of the blades is greatly limited by the weather and light conditions, and only the surface defects of the blades can be detected, resulting in the existing detection device having very limited actual detection capabilities during inspection. It is unable to monitor whether there is damage inside the blade, resulting in the inability to detect the damage in time when the blade is damaged. The damage can only be detected when it worsens and eventually affects the appearance of the blade, which greatly increases the probability of safety accidents.

[0034] Furthermore, the connecting frame 3 is arranged on the rotation center axis of the wind turbine blades through a corresponding mounting structure, the rotating frame 4 is rotatably mounted on the connecting frame 3, the extending bracket 5 is slidably mounted on the connecting bracket, the driving component 6 is connected to the connecting frame 3, and is used to drive the rotating frame 4 and the extending bracket 5 accordingly, and the matching component 7 is connected to the extending bracket 5, and is used to achieve the matching between the vibration detector 2 and the corresponding unit blades.

[0035] Specifically, the shooting device 1 mainly uses a high-definition camera with a corresponding infrared thermal imaging detection mechanism to shoot and detect the blades of the wind turbine generator set, and the vibration detector 2 detects the internal damage of the blade by sensing the vibration generated during the operation of the blade. The core idea of ​​damage detection through vibration is that the modal parameters (such as frequency, vibration mode, damping, etc.) are functions of the physical characteristics of the structure (such as mass, stiffness, etc.). When the physical characteristics of the structure change, the modal characteristics will inevitably change. Therefore, by performing a vibration test on the structure, collecting data and performing signal analysis and processing, the dynamic characteristics of the structure can be determined by the input and output of the system, and then inferring whether the physical characteristics of the structure have changed, so as to determine whether the structure is damaged;

[0036] Since the sensor provided in the vibration detector 2 needs to be attached to the outer surface of the detection part during detection, the corresponding mounting assembly can be used to match the vibration detector 2 with the blades during operation. The connecting frame 3 is installed on the rotation axis of the blades of the wind turbine generator set through mounting structures such as brackets, so that the rotation of the rotating frame 4 on the connecting frame 3 can be maintained on the same rotation axis as the rotation of the blades of the wind turbine generator set.

[0037] The extending bracket 5 is slidably installed on the rotating frame 4. The movement of the extending bracket 5 on the rotating frame 4 can facilitate the user to adjust the matching position of the vibration detector 2, and then the matching of the vibration detector 2 and the corresponding blade is completed through the matching component 7.

[0038] Furthermore, the one-way rotation mechanism 601 is installed in the connecting frame 3 to realize one-way rotation driving of the rotating frame 4; the screw driving mechanism 602 is installed in the rotating frame 4 to drive the extending bracket 5 to move.

[0039] When the present embodiment is in use, the one-way rotation mechanism 601 is mainly composed of a corresponding motor and a one-way connection structure. The one-way connection structure is similar to the one-way driving structure of a bicycle. A ratchet is arranged on the transmission shaft, and an elastic block that can be rotated and reset is arranged inside the driving member structure for driving. In this way, when the motor rotates by driving the driving member, the elastic block arranged on the driving member will achieve one-way driving of the transmission shaft by cooperating with the ratchet, and the rotating frame 4 will be fixed to the corresponding transmission shaft. At the same time, the one-way rotation mechanism 601 is also provided with a corresponding clamping and limiting structure. By arranging a sliding friction block to cooperate with the corresponding driving element, the transmission shaft can be clamped and limited to prevent the transmission shaft from rotating at will.

[0040] Since the blades of the wind turbine generator set maintain a consistent rotation direction during normal operation, the corresponding one-way rotation mechanism 601 can be provided to drive the rotating frame 4 to rotate in a consistent manner with the blades in cooperation with the image fed back by the shooting device 1;

[0041] When the vibration detector 2 is adsorbed and matched with the corresponding blade to be detected through the matching component 7, the motor inside the one-way rotation mechanism 601 can stop working. At this time, the rotating frame 4 can be driven by the corresponding blade without interference from the corresponding motor due to the setting of the one-way rotation mechanism 601. When the detection is completed, the matching component 7 releases the adsorption between the corresponding blade, and the rotating frame 4 will rotate under the action of inertia, and then the rotating frame 4 can be limited by the clamping and limiting structure set by the one-way driving mechanism to avoid the unrestricted free rotation of the rotating frame 4, so that the rotating frame 4 can be quickly kept consistent with the set driving speed when the one-way driving is performed in one direction through the one-way rotation mechanism 601 later.

[0042] At the same time, the limiting structure set by the one-way drive mechanism can also facilitate the user to limit the rotating frame 4 when adjusting the rotation speed of the rotating frame 4 through the image feedback of the shooting device 1. Because the rotation of the blades of the wind turbine generator set cannot always remain consistent, when the rotating frame 4 rotates too fast, the driving element set by the one-way drive mechanism cannot adjust the rotation speed of the rotating frame 4, so a corresponding limiting element is required to limit the deceleration.

[0043] The screw driving mechanism 602 is composed of a screw and a corresponding motor. The motor drives the screw to rotate to complete the movement of the corresponding plate. In this way, the screw driving mechanism 602 can realize the corresponding drive of the extending bracket 5, so that the user can adjust the extension length of the extending bracket 5.

[0044] Furthermore, the sliding frame 701 is slidably installed on the extending bracket 5; the expenditure frame 702 is slidably installed on the sliding frame 701; the vibration detector 2 is slidably installed on the loading frame 703; the two groups of the gear rack driving mechanisms 704 are respectively connected to the expenditure frame 702 and the sliding frame 701, and are used to drive the sliding frame 701 and the expenditure frame 702 respectively; the ejection component 705 is connected to the loading frame 703, and is used to drive the loading frame 703 to move out of the expenditure frame 702.

[0045] Furthermore, the intermediate bracket 707 is slidably connected to the cylinder drive frame 706 and to the loading frame 703; the spring 708 is provided at the connection position between the intermediate bracket 707 and the cylinder drive frame 706 and the connection position between the intermediate bracket 707 and the loading frame 703, for realizing the up, down, left, and right sliding of the loading frame 703 relative to the cylinder drive frame 706 and the subsequent resetting.

[0046] Furthermore, the electric push rod 709 is connected to the vibration detector 2 and installed in the loading frame 703; the adsorption chassis 710 is installed on the side of the loading frame 703; the control pump 711 is connected to the adsorption chassis 710 and installed in the loading frame 703.

[0047] When the present embodiment is in use, the sliding frame 701 realizes corresponding sliding by cooperating with the sliding groove at the top of the extending bracket 5, and the expenditure frame 702 realizes corresponding sliding by cooperating with the sliding groove inside the sliding frame 701. The sliding frame 701 and the expenditure frame 702 are both driven by the gear rack driving mechanism 704, wherein the gear rack driving mechanism 704 arranged on the outside is provided with a corresponding protective shell and a baffle for shielding and protection in order to avoid the influence of the external environment. The gear rack driving mechanism 704 is mainly composed of a gear driven by a motor and a rack that cooperates with the gear to complete the corresponding plate drive. The rack is set on the plate to be driven, and then the corresponding drive is completed by the cooperation of the gear and the rack.

[0048] The expenditure frame 702 is installed with the cylinder drive frame 706, and the cylinder drive frame 706 is a frame driven by a cylinder. The intermediate bracket 707 is slidably installed at the frame end of the cylinder drive frame 706, and the intermediate bracket 707 can slide left and right on the frame end of the cylinder drive frame 706. The side of the intermediate bracket 707 is slidably installed with the loading frame 703, and the loading frame 703 can slide up and down correspondingly on one side of the intermediate bracket 707. The sliding of the intermediate bracket 707 and the corresponding frame end of the cylinder drive frame 706 and the sliding of the loading frame 703 and the intermediate bracket 707 can be achieved by setting a pair of The spring 708 is reset. Since it is impossible to ensure that the rotation axis of the rotating frame 4 is completely the same as the rotation axis of the blades of the wind turbine when the connecting frame 3 and the rotating frame 4 are installed, a certain displacement will occur when the blades drive the rotating frame 4 to rotate. In this way, by arranging the upper, lower, left and right positions of the loading frame 703, the loading frame 703 can have a certain fault tolerance after being adsorbed and fixed with the corresponding blades, thereby ensuring that the blades are more stable when driving the rotating frame 4 to rotate, and at the same time, the fault tolerance of the corresponding adsorption cooperation can be increased, so that the rotating frame 4 does not have to maintain exactly the same rotation speed as the corresponding blades.

[0049] The vibration detector 2 is arranged in the loading frame 703, and the vibration detector 2 is pushed out by the electric push rod 709 arranged inside the loading frame 703. The loading frame 703 is also provided with two groups of the control pumps 711 and the corresponding adsorption chassis 710, so that the loading frame 703 can be completely adsorbed and fixed on the corresponding blade through the control pump 711 and the adsorption chassis 710, thereby ensuring the stability of the subsequent cooperation between the vibration detector 2 and the corresponding blade. It should be noted that the sliding frame 701 is provided with a corresponding rotating baffle to cooperate with the magnetic suction plate to cover and seal the end of the sliding groove of the sliding frame 701. When working, due to the movement of the expenditure frame 702 When the detection is completed, the user needs to retract the sliding frame 701 and the corresponding detection mechanism set on the sliding frame 701 so that the corresponding element moves back to the set frame groove. In this way, when the expenditure frame 702 is completely moved into the sliding groove of the sliding frame 701, the rotating baffle will rotate downward and reset under the action of gravity, and then be adsorbed by the set magnetic suction plate. In this way, the non-working vibration detector 2 and its corresponding elements can be shielded and protected by the rotating baffle and the set magnetic suction plate.

[0050] Preferably, the installation assembly provided by the present invention further includes a rotating ring 8, a transparent installation box 9, a rotation adjustment mechanism 10 and a rotating driving component 11, and the rotating driving component 11 includes a fixed gear ring 1101, a driving gear 1102 and a driving motor 1103.

[0051] Furthermore, the rotating ring 8 is rotatably mounted on the sliding frame 701; the transparent mounting box 9 is fixedly mounted on the rotating ring 8; the rotation adjustment mechanism 10 is connected to the shooting device 1 and is mounted on the transparent mounting box 9; the rotating driving component 11 is connected to the rotating ring 8 for driving the rotating ring 8.

[0052] Furthermore, the fixed gear ring 1101 is fixedly installed on one side of the rotating ring 8; the driving gear 1102 is meshed with the fixed gear ring 1101 and is rotatably installed on the sliding frame 701; the output shaft of the driving motor 1103 is connected to the driving gear 1102, and the driving motor 1103 is fixedly installed on the sliding frame 701.

[0053] When the present embodiment is in use, the rotating ring 8 cooperates with the card groove of the outer layer of the truncated cone at the end of the sliding frame 701 through the inner card ring, so that the rotating ring 8 can slide correspondingly on the truncated cone at the end of the sliding frame 701, and the outer layer of the rotating ring 8 is fixedly installed with the transparent installation box 9, and the shooting device 1 is rotatably installed in the transparent installation box 9, and the shooting device 1 is driven by the set rotation adjustment mechanism 10, and the rotation adjustment mechanism 10 is mainly composed of a corresponding shaft rod and a motor driving the shaft rod, and the shaft rod is driven by the motor to rotate, and then the mounting shell of the shooting device 1 is driven to rotate by the shaft rod, so as to adjust the shooting angle of the shooting device 1, and the end of the transparent installation box 9 is arc-shaped, and the upper and lower areas of the transparent installation box 9 are provided with corresponding transparent glass, so as to protect the shooting device 1 without affecting the normal shooting of the shooting device 1;

[0054] The fixed gear ring 1101 is fixed on the side of the rotating ring 8, and the fixed gear ring 1101 is driven by the driving gear 1102, and the driving gear 1102 is driven by the driving motor 1103, so that the rotating ring 8 can be rotated by driving the fixed gear ring 1101, and then the shooting angle and position of the shooting device 1 can be further adjusted, so that when capturing and detecting the movement state and surface damage of the blade, more flexible adjustments can be made according to actual operating conditions. It should be noted that the driving mechanism composed of the fixed gear ring 1101 and the corresponding components is protected by a set shell to prevent the external environment from affecting the internal transmission mechanism.

[0055] See also Fig.11 A wind turbine blade damage detection device and method are provided, wherein the wind turbine blade damage detection device and method are provided, and the following steps are included:

[0056] S1: Using a photographing device 1 to directly photograph and detect the damage condition of the outer surface of the blade of the wind turbine generator set, the rotating state of the blade can be captured by the photographing device 1 during the photographing process, and then the driving member 6 drives the rotating frame 4 on the connecting frame 3 to rotate similarly to the blade;

[0057] S2: When the photographing device 1 is used for photographing and testing, the bracket 5 can be extended to move on the rotating frame 4 according to actual conditions, so as to adjust the photographing range of the photographing device 1;

[0058] S3: When it is necessary to detect the internal damage of the blade, the shooting device 1 cooperates with the driving component 6 to make the rotating frame 4 and the blade rotate synchronously, and then the vibration detector 2 is driven to cooperate with the blade through the cooperating component 7 to realize the detection of the internal damage of the blade.

[0059] What is disclosed above is only one or more preferred embodiments of the present application, and cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiments and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A wind turbine blade damage detection device and method, comprising a photographing device and a vibration detector, characterized in that: Also included are mounting components; The installation assembly includes a connecting frame, a rotating frame, an extending bracket, a driving component and a matching component; The connecting frame is arranged on the rotation center axis of the blades of the wind turbine unit through a corresponding mounting structure, the rotating frame is rotatably mounted on the connecting frame, the extending bracket is slidably mounted on the connecting bracket, the driving component is connected to the connecting frame for correspondingly driving the rotating frame and the extending bracket, and the matching component is connected to the extending bracket for achieving matching between the vibration detector and the corresponding unit blade.

2. The wind turbine blade damage detection device and method according to claim 1, characterized in that: The driving component includes a one-way rotation mechanism and a screw driving mechanism. The one-way rotation mechanism is installed in the connecting frame to realize one-way rotation driving of the rotating frame; the screw driving mechanism is installed in the rotating frame to drive the extended bracket to move.

3. The wind turbine blade damage detection device and method according to claim 1, characterized in that: The mating components include a sliding frame, a disbursement frame, a loading frame, a gear rack driving mechanism and a pushing component. The sliding frame is slidably installed on the extending frame; the disbursement frame is slidably installed on the sliding frame; the vibration detector is slidably installed on the loading frame; two groups of gear rack driving mechanisms are respectively connected to the disbursement frame and the sliding frame, and are used to drive the sliding frame and the disbursement frame respectively; the pushing component is connected to the loading frame, and is used to drive the loading frame to move out of the disbursement frame.

4. The wind turbine blade damage detection device and method according to claim 3, characterized in that: The ejection component includes a cylinder drive frame, an intermediate bracket and a spring, wherein the cylinder drive frame is mounted on the dispensing frame; the intermediate bracket is slidably connected to the cylinder drive frame and is slidably connected to the loading frame; the spring is provided at the connection position between the intermediate bracket and the cylinder drive frame and at the connection position between the intermediate bracket and the loading frame, for realizing the up, down, left, and right sliding of the loading frame relative to the cylinder drive frame and the subsequent resetting.

5. The wind turbine blade damage detection device and method according to claim 3, characterized in that: The ejection component also includes an electric push rod, an adsorption chassis and a control pump. The electric push rod is connected to the vibration detector and installed in the loading frame; the adsorption chassis is installed on the side of the loading frame; the control pump is connected to the adsorption chassis and installed in the loading frame.

6. The wind turbine blade damage detection device and method according to claim 1, characterized in that: The installation assembly also includes a rotating ring, a transparent installation box, a rotation adjustment mechanism and a rotation driving component. The rotating ring is rotatably mounted on the sliding frame; the transparent installation box is fixedly mounted on the rotating ring; the rotation adjustment mechanism is connected to the shooting device and installed on the transparent installation box; the rotation driving component is connected to the rotating ring for driving the rotating ring.

7. The wind turbine blade damage detection device and method according to claim 6, characterized in that: The rotating driving component includes a fixed gear ring, a driving gear and a driving motor, wherein the fixed gear ring is fixedly mounted on one side of the rotating ring; the driving gear is meshed with the fixed gear ring and is rotatably mounted on the sliding frame; the output shaft of the driving motor is connected to the driving gear, and the driving motor is fixedly mounted on the sliding frame.

8. A method for detecting blade damage of a wind turbine generator set, using the wind turbine generator set blade damage detection device as claimed in claim 1, characterized in that: The following steps are included: The damage condition of the outer surface of the blade of the wind turbine generator set is directly photographed and detected by using a photographing device. During the photographing process, the rotating state of the blade can be captured by the photographing device, and then the rotating frame is driven on the connecting frame by a driving member to perform a rotation similar to the blade; When the shooting device is used for shooting detection, the bracket can be extended to move on the rotating frame according to actual conditions, so as to adjust the shooting range of the shooting device; When it is necessary to detect the internal damage of the blade, the camera device cooperates with the driving component to make the rotating frame and the blade rotate synchronously, and then the vibration detector is driven to cooperate with the blade through the cooperating component to realize the detection of internal damage of the blade.

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