A kind of all-around detection equipment suitable for various types of fan blade inner cavity

Abstract

The utility model relates to fan blade detection technical field, concretely disclose a kind of all-around detection equipment suitable for various model fan blade inner cavity, including front plate, the side of front plate is fixedly provided with several telescopic columns, the end of several telescopic columns away from front plate is provided with back plate, the lower side of front plate and back plate is respectively provided with two connecting plates, motor is arranged between two connecting plates, the output of motor is fixedly provided with transmission shaft, the end of transmission shaft away from motor passes through connecting plate and is fixedly provided with fixed ring, the outer surface of fixed ring is circular array and is provided with several extension rods, several extension rods are provided with suction cup away from the side of fixed ring, by telescopic column and suction cup combination structure, effectively solve the problem of poor adaptability of existing equipment, telescopic column can be flexibly adjusted interval, adapt different cross-sectional dimension fan blade inner cavity;Array type extension rod on fixed ring and suction cup, can ensure equipment stable walking in different model blade inner cavity by adsorption force.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine blade testing technology, and in particular to a comprehensive testing device for the inner cavity of various types of wind turbine blades. Background Technology

[0002] Currently, wind turbine blades are the core components of wind power generation equipment. Their structural integrity directly affects the operational safety and service life of the wind turbine. The blade's internal cavity has complex reinforcing ribs and curved surface structures. Furthermore, the length, cross-sectional dimensions, and internal cavity structure of different wind turbine blade models vary greatly, posing a significant challenge to internal cavity inspection.

[0003] Existing equipment for testing the internal cavity of wind turbine blades has extremely poor compatibility. Most of them are specialized equipment designed for specific blade models and cannot be compatible with blades of different cross-sectional dimensions and lengths.

[0004] To address the problem of poor compatibility of existing testing equipment, we propose a comprehensive testing device for the inner cavity of various types of wind turbine blades. Utility Model Content

[0005] The purpose of this invention is to provide a comprehensive testing device for the inner cavity of various types of wind turbine blades, aiming to solve the technical problems in the prior art.

[0006] To achieve the above objectives, this utility model employs a comprehensive inspection device for the inner cavity of various types of wind turbine blades, comprising a front plate, a plurality of telescopic columns fixedly arranged on one side of the front plate, a rear plate arranged at the end of the plurality of telescopic columns away from the front plate, two connecting plates respectively arranged on the lower side of the front plate and the rear plate, a motor arranged between the two connecting plates, a drive shaft fixedly arranged at the output end of the motor, the end of the drive shaft away from the motor passing through the connecting plate and fixedly arranged with a fixing ring, a plurality of extension rods arranged in a circular array on the outer surface of the fixing ring, and a suction cup arranged on the side of the plurality of extension rods away from the fixing ring.

[0007] Among them, a plurality of limiting seats are provided on the upper side of the opposite side of the front plate and the rear plate, and a plurality of limiting bands are provided between the plurality of limiting seats.

[0008] The front panel is fixedly equipped with a main control board, and the main control board is provided with a transmission line on the side near the rear panel.

[0009] The main control board has a connecting line on the side away from the transmission line, and a fill light frame is provided at the end of the connecting line away from the main control board. The fill light frame is also fixedly installed on the side of the front panel away from the rear panel, and a fill light is fixedly installed inside the fill light frame.

[0010] The control board has a control line at its center on the side away from the transmission line, and a fixing base is provided at the end of the control line away from the control board.

[0011] The fixing base is also fixedly disposed at the center of the side of the front plate away from the rear plate, and a rotating shaft is rotatably disposed on the inner side of the fixing base.

[0012] A camera is fixedly mounted on the outer surface of the rotating shaft.

[0013] A retrieval rack is fixedly installed on the side of the rear plate away from the front plate, and a retrieval rope is fixedly installed at the center of the side of the retrieval rack away from the rear plate.

[0014] Beneficial effects: 1. This utility model provides a comprehensive inspection device for the inner cavity of various types of wind turbine blades. Through a combination of telescopic columns and suction cups, it effectively solves the problem of poor adaptability of existing equipment. The telescopic columns between the front and rear plates can be flexibly adjusted in spacing to accommodate the inner cavities of wind turbine blades with different cross-sectional dimensions. The array of extension rods and suction cups on the fixing ring can tightly adhere to the curved surface of the blade inner cavity or the sidewall of the reinforcing rib through adsorption force, ensuring stable movement of the equipment within the inner cavities of different blade types. It can cover the inspection needs of wind turbine blades of various lengths and cross-sectional dimensions, significantly reducing the investment cost of inspection equipment for enterprises, while also reducing equipment replacement and debugging time, and improving inspection efficiency. It is especially suitable for batch inspection scenarios of multiple blade types in wind power operation and maintenance.

[0015] 2. This utility model provides a comprehensive inspection device for the inner cavity of various types of wind turbine blades. Through supplementary lighting and an adjustable camera structure, it solves the problem of blind spots caused by dim lighting and limited viewing angle in the inner cavity of the blade. The supplementary light in the supplementary lighting frame can provide sufficient illumination to eliminate the influence of dark areas in the inner cavity on the inspection. The rotating shaft on the fixed base drives the camera to rotate flexibly. Combined with the overall movement of the equipment, it can achieve comprehensive imaging of the inner cavity of the blade without blind spots. The main control board coordinates the imaging and supplementary lighting work synchronously through control lines and connecting lines to ensure clear images and facilitate accurate identification of defects such as surface cracks and minor scratches. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 This is a top view of the entire utility model.

[0019] Figure 3 This is a bottom view of the entire utility model.

[0020] 101-Front panel, 102-Telescopic column, 103-Rear panel, 104-Connecting plate, 105-Motor, 106-Drive shaft, 107-Fixing ring, 108-Extension rod, 109-Suction cup, 110-Master controller, 111-Transmission line, 112-Connecting line, 113-Fill light frame, 114-Fill light, 115-Control line, 116-Fixed seat, 117-Rotating shaft, 118-Camera, 119-Recovery rack, 120-Recovery cable, 121-Limit seat, 122-Limit belt. Detailed Implementation

[0021] Please see Figures 1-3 , Figure 1 This is a schematic diagram of the overall structure of this utility model. Figure 2 This is a top view of the entire utility model. Figure 3 This is a bottom view of the entire utility model. The utility model provides an all-around inspection device for the inner cavity of various types of wind turbine blades, including a front plate 101. A plurality of telescopic columns 102 are fixedly arranged on one side of the front plate 101. A rear plate 103 is arranged at the end of the plurality of telescopic columns 102 away from the front plate 101. Two connecting plates 104 are respectively arranged on the lower side of the front plate 101 and the rear plate 103. A motor 105 is arranged between the two connecting plates 104. A drive shaft 106 is fixedly arranged at the output end of the motor 105. The end of the drive shaft 106 away from the motor 105 passes through the connecting plate 104 and is fixedly arranged with a fixing ring 107. A plurality of extension rods 108 are arranged in a circular array on the outer surface of the fixing ring 107. A suction cup 109 is arranged on the side of the plurality of extension rods 108 away from the fixing ring 107.

[0022] In this embodiment, the front plate 101 and the rear plate 103 of the device, as core load-bearing components, are made of high-strength, lightweight materials, which can meet the load-bearing requirements and flexibly adapt to the narrow space inside the fan blade cavity. Multiple sets of telescopic columns 102 are fixedly provided on the side of the front plate 101 near the rear plate 103. The end of each telescopic column 102 away from the front plate 101 is firmly connected to the rear plate 103. The distance between the front plate 101 and the rear plate 103 can be flexibly changed through telescopic adjustment to adapt to blade cavities of different cross-sectional sizes. Connecting plates 104 are fixed to the lower sides of both the front plate 101 and the rear plate 103. A motor 105 is installed between two connecting plates 104 on the same side. The output end of the motor 105 is connected to the drive shaft 106. The end of the drive shaft 106 away from the motor 105 passes through the connecting plate 104 and is connected to the fixing ring 107. The outer surface of the fixing ring 107 has multiple extension rods 108 arranged in a circular array around the center. Each extension rod 108 has a suction cup 109 at the end away from the fixing ring 107. During operation, the motor 105 drives the transmission shaft 106 to rotate the fixing ring 107, and the extension rods 108 synchronously drive the suction cups 109 to rotate. The suction cups 109 adhere tightly to the inner wall of the blade through negative pressure adsorption. Combined with the adjustable spacing of the telescopic columns 102, this ensures that the device can move stably within the inner cavity of different types of wind turbine blades.

[0023] Furthermore, a plurality of limiting seats 121 are provided above the opposite side of the front plate 101 and the rear plate 103, and a plurality of limiting bands 122 are respectively provided between the plurality of limiting seats 121.

[0024] In this embodiment, when the telescopic column 102 adjusts the distance between the front plate 101 and the rear plate 103, the limiting band 122 can limit the relative displacement between the two, preventing structural deformation of the front plate 101 and the rear plate 103 due to over-adjustment of the telescopic column 102, thus ensuring the stability of the overall structure of the equipment. Simultaneously, the flexibility of the limiting band 122 does not hinder the normal adjustment range of the telescopic column 102, and it can buffer the instantaneous impact force caused by protrusions or depressions in the inner cavity during equipment movement. Combined with the suction force of the suction cup 109, this further enhances the stability of the equipment's movement, providing structural protection for continuous batch testing operations and indirectly improving testing efficiency.

[0025] Furthermore, the master controller 110 is fixedly installed on the front panel 101, and the transmission line 111 is installed on the side of the master controller 110 near the rear panel 103.

[0026] In this embodiment, the central controller 110 sends control signals to each actuator via the transmission line 111. For example, it adjusts the speed of the motor 105 to control the equipment's travel speed, or controls the negative pressure of the suction cup 109 to ensure stable adsorption. Simultaneously, the transmission line 111 also transmits the operating status feedback signals of the actuators back to the central controller 110, achieving closed-loop control of the equipment operation. The transmission line 111 employs a shielded design, effectively resisting electromagnetic interference in the complex environment inside the blade cavity, ensuring stable signal transmission, and preventing equipment malfunctions due to signal disturbances. This provides a foundation for the automated and precise operation of the equipment through control and signal transmission.

[0027] Furthermore, the main controller 110 is provided with the connecting line 112 on the side away from the transmission line 111, and the connecting line 112 is provided with the supplementary light frame 113 at the end away from the main controller 110. The supplementary light frame 113 is also fixedly provided on the side of the front plate 101 away from the rear plate 103, and the supplementary light 114 is fixedly provided inside the supplementary light frame 113.

[0028] In this embodiment, when the equipment enters the blade's inner cavity for inspection, the central controller 110 sends a control signal to the supplementary lighting element via the connecting line 112, automatically adjusting the supplementary lighting brightness according to the actual light intensity inside the cavity. In the dimly lit depths of the cavity, the supplementary lighting element provides sufficient and uniform illumination, eliminating inspection shadows formed in dark areas; in bright areas near the blade inlet, it automatically reduces brightness to avoid strong light reflection affecting the clarity of the inspection image. This structure solves the problem of blurry images and difficulty in defect identification caused by insufficient light inside the blade cavity in existing inspection equipment, providing lighting assurance for subsequent camera inspection components to capture clear images, directly improving the accuracy of defect identification.

[0029] Furthermore, the control line 115 is provided at the center of the side of the master controller 110 away from the transmission line 111, and the fixing seat 116 is provided at the end of the control line 115 away from the master controller 110.

[0030] In this embodiment, an attitude adjustment signal is sent to the drive component within the fixed base 116 via the control line 115 to control the camera component to adjust its shooting angle. Simultaneously, the camera attitude feedback signal collected by the detection component within the fixed base 116 is also transmitted back to the central controller 110 via the control line 115, achieving precise control of the camera component's attitude. The stable transmission via the control line 115 ensures the flexible adjustment of the camera component and is a crucial foundation for the device to achieve all-around detection, ensuring that the central controller 110 can accurately control the camera component to capture images of various areas within the blade's inner cavity in real time.

[0031] Furthermore, the fixing seat 116 is also fixedly disposed on the center of the side of the front plate 101 away from the rear plate 103, and the rotating shaft 117 is rotatably disposed on the inner side of the fixing seat 116.

[0032] In this embodiment, the central controller 110 sends an adjustment signal to the drive component according to the preset detection path and the blade's internal cavity structure, driving the rotating shaft 117 to adjust the shooting angle of the camera component. For hidden areas such as the gaps between reinforcing ribs and corners within the blade's internal cavity, the camera component can be focused and captured by pitch adjustment; for different positions on the curved surface of the internal cavity, horizontal rotation achieves comprehensive coverage without blind spots. This structure solves the detection blind spot problem caused by the fixed camera angle of existing equipment. Combined with the overall walking function of the equipment, it realizes an all-round detection mode of "movement + posture adjustment," significantly improving the comprehensiveness of blade internal cavity detection.

[0033] Furthermore, the camera 118 is fixedly mounted on the outer surface of the rotating shaft 117.

[0034] In this embodiment, the image signal acquired by the camera component is transmitted to the central controller 110 via the control line 115. After preprocessing the image data, the central controller 110 stores it in a local data module and uploads it to an external terminal via a wireless communication module for real-time viewing and analysis by staff. With the assistance of the supplementary lighting component, the camera component can consistently capture clear images in the complex lighting environment inside the blade cavity, effectively identifying various surface defects. This solves the problems of low accuracy and incomplete defect identification in existing single-detection methods, providing reliable data support for the assessment of the structural integrity of the wind turbine blade cavity.

[0035] Furthermore, the recycling rack 119 is fixedly installed on the side of the rear plate 103 away from the front plate 101, and the recycling cable 120 is fixedly installed at the center of the side of the recycling rack 119 away from the rear plate 103.

[0036] In this embodiment, after the equipment completes the blade cavity inspection, the operator can pull the recovery cable 120 at the blade inlet to retract the equipment along the cavity. The structural design of the recovery frame 119 can evenly distribute the tension of the recovery cable 120 to the rear plate 103, preventing the rear plate 103 from deforming due to excessive local stress. The high strength of the recovery cable 120 ensures that it will not break during the pulling process, guaranteeing the safety of the equipment recovery process. This structure solves the problem of the equipment being difficult to withdraw from the cavity of long or complex blades, significantly shortening the equipment recovery time, improving the overall inspection efficiency, and reducing the risk of damage caused by the equipment getting stuck in the cavity.

[0037] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.

Claims

1. A comprehensive inspection device for the inner cavity of various types of wind turbine blades, characterized in that, The device includes a front plate (101), on one side of which a plurality of telescopic columns (102) are fixedly provided. A rear plate (103) is provided at the end of the plurality of telescopic columns (102) away from the front plate (101). Two connecting plates (104) are respectively provided on the lower side of the front plate (101) and the rear plate (103). A motor (105) is provided between the two connecting plates (104). A drive shaft (106) is fixedly provided at the output end of the motor (105). The end of the drive shaft (106) away from the motor (105) passes through the connecting plate (104) and is fixedly provided with a fixing ring (107). A plurality of extension rods (108) are arranged in a circular array on the outer surface of the fixing ring (107). A suction cup (109) is provided on the side of the plurality of extension rods (108) away from the fixing ring (107).

2. The all-around inspection equipment for the inner cavity of various types of wind turbine blades as described in claim 1, characterized in that, A plurality of limiting seats (121) are provided above the opposite side of the front plate (101) and the rear plate (103), and a plurality of limiting bands (122) are provided between the plurality of limiting seats (121).

3. The all-around inspection equipment for the inner cavity of various types of wind turbine blades as described in claim 1, characterized in that, A main control board (110) is fixedly installed on the front panel (101), and a transmission line (111) is provided on the side of the main control board (110) near the rear panel (103).

4. The all-around inspection equipment for the inner cavity of various types of wind turbine blades as described in claim 3, characterized in that, A connecting line (112) is provided on the side of the main control board (110) away from the transmission line (111). A fill light frame (113) is provided at the end of the connecting line (112) away from the main control board (110). The fill light frame (113) is also fixedly provided on the side of the front plate (101) away from the rear plate (103). A fill light lamp (114) is fixedly provided inside the fill light frame (113).

5. The all-around inspection equipment for the inner cavity of various types of wind turbine blades as described in claim 3, characterized in that, A control line (115) is provided at the center of the side of the main control board (110) away from the transmission line (111), and a fixing seat (116) is provided at the end of the control line (115) away from the main control board (110).

6. The all-around inspection equipment for the inner cavity of various types of wind turbine blades as described in claim 5, characterized in that, The fixing seat (116) is also fixedly disposed at the center of the side of the front plate (101) away from the rear plate (103), and a rotating shaft (117) is rotatably disposed on the inner side of the fixing seat (116).

7. The all-around inspection equipment for the inner cavity of various types of wind turbine blades as described in claim 6, characterized in that, A camera (118) is fixedly mounted on the outer surface of the rotating shaft (117).

8. The all-around inspection equipment for the inner cavity of various types of wind turbine blades as described in claim 1, characterized in that, A recycling rack (119) is fixedly installed on the side of the rear plate (103) away from the front plate (101), and a recycling cable (120) is fixedly installed at the center of the side of the recycling rack (119) away from the rear plate (103).

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