A wind turbine operation and maintenance basket control method

Abstract

The present application relates to the technical field of hanging basket, in particular to a kind of hanging basket control method for wind turbine operation and maintenance, hanging basket includes hanging basket body, controller and the limiting mechanism being located at the front end of hanging basket body;Limiting mechanism includes limiting slot, drive motor is arranged in one side of limiting slot, drive motor is electrically connected with controller, limiting slot has inner cavity, threaded rod that is connected with the output shaft of drive motor is arranged in limiting slot inner cavity, threaded rod both ends have opposite thread, and two ends are equipped with driving block respectively, driving block is connected with the drive rod that passes out limiting slot, the end of drive rod away from driving block is connected with the sleeve, and sleeve is semicircular ring shape;Range finding mechanism is respectively arranged at the top and the bottom outside of sleeve, range finding mechanism is formed by slide rail and laser ranging module slidingly connected with slide rail, laser ranging module is connected with controller in communication.This application can be automatically adjusted the size of the clamping part for clamping tower drum when passing through the connecting end, so that sleeve passes through smoothly.

Description

Technical Field

[0001] This invention relates to the field of suspended platforms for wind turbine operation and maintenance, and more specifically, to a control method for a suspended platform for wind turbine operation and maintenance. Background Technology

[0002] A suspended platform is a support platform for high-altitude construction operations. It has advantages such as flexible operation, easy relocation, and safety and reliability. It has been widely used in the cleaning, inspection, and maintenance of wind turbine blades. At present, suspended platforms for the operation and maintenance of small wind turbines are widely used in the maintenance of wind turbines due to their simple overall structure and low cost. For example, Chinese utility model publication number CN218323820U proposes a folding suspended platform for the operation and maintenance of wind turbines. The two clamping plates of this device are fitted onto the outside of the wind turbine's rod, so that the entire suspended platform can be held in place by the wind turbine's restraints when the wind turbine is being repaired, which facilitates the operation of workers and increases the safety of the operation.

[0003] The aforementioned device has some shortcomings in its use: The device describes that closing the protective door allows the entire basket to rise, with the wind turbine's mast restricting the clamping plate to maintain stability. However, in reality, the mast of a typical small wind turbine is also assembled from multiple short rods. The ends of two interconnected short rods are fastened together with bolts. Furthermore, to facilitate connection, the diameter of the connecting end of the two short rods is larger than the diameter of the short rod itself, resulting in an inverted "T" shape in the cross-section of the short rod. Therefore, in actual use, the clamping plate is obstructed when moving to the connecting end of the short rods, hindering movement. Summary of the Invention

[0004] The present invention aims to solve the problem in the prior art where the suspended basket is blocked from moving when it reaches the connection end of each section of the tower. It provides a control method for the suspended basket used for wind turbine operation and maintenance, which can automatically adjust the size of the clamping part used to clamp the tower when passing through the connection end, so that the clamp can pass smoothly.

[0005] The embodiments of the present invention are achieved through the following technical solutions: a suspended platform for wind turbine operation and maintenance, comprising a platform body, a controller, and a limiting mechanism disposed at the front end of the platform body; The limiting mechanism includes a limiting groove, a drive motor is provided on one side of the limiting groove, the drive motor is electrically connected to the controller, the limiting groove has an inner cavity, and a threaded rod connected to the output shaft of the drive motor is provided in the inner cavity of the limiting groove. The threaded rod has a first section and a second section with the opposite thread to the first section. The first section and the second section of the threaded rod are respectively threaded to drive blocks, and drive rods that pass through the limiting groove are respectively connected to the two drive blocks. A ferrule is connected to the end of the drive rod away from the drive block. The ferrule is semi-circular, and the ferrules connected to the two drive blocks together constitute a clamping part for clamping the tower cylinder. The clamping part is provided with a ranging mechanism on the top and bottom outer sides. The ranging mechanism consists of a guide rod and a laser ranging module that is mounted on the guide rod and moves back and forth along the guide rod. The laser ranging module is communicatively connected to the controller.

[0006] According to a preferred embodiment, the sleeve is provided with a receiving cavity, the top of the receiving cavity is provided with a cover plate covering the receiving cavity, the cover plate is provided with a sealing cap, the surface of the sleeve is provided with a groove, a plurality of through holes communicating with the receiving cavity are provided equidistantly in the groove, and a sponge pad protruding from the groove is provided in the groove.

[0007] According to a preferred embodiment, the side wall of the limiting groove is provided with a movable groove, and the movable groove is slidably engaged with the drive rod.

[0008] According to a preferred embodiment, the drive rod includes a short rod and a long rod, and the short rod and the long rod are respectively provided with an arc-shaped chamfer at the end away from the drive block.

[0009] According to a preferred embodiment, silicone pads are respectively provided at both ends of the sponge pad, the thickness of the silicone pads is half the thickness of the sponge pad, and a hand-tightening screw is provided on a pair of silicone pads, one end of the hand-tightening screw passing through the silicone pad and engaging with the retainer.

[0010] According to a preferred embodiment, the suspended basket body is provided with a pair of slots, the limiting mechanism is inserted into the slots, and the suspended basket body is provided with fastening bolts that cooperate with the slots. The fastening bolts pass through the slots and are connected to the limiting mechanism.

[0011] According to a preferred embodiment, the limiting groove is provided with a plug-in block, the plug-in block has a threaded hole, the plug-in block is inserted into the slot, and the threaded hole cooperates with the fastening bolt.

[0012] This invention also provides a control method for a suspended platform for wind turbine operation and maintenance, applied to the suspended platform for wind turbine operation and maintenance as described above, comprising the following steps: Get the current tower diameter and the previous tower diameter; Based on the difference between the current tower diameter and the previous tower diameter, the spacing increment between the two drive blocks is determined. The tower diameter is calculated from the tower arc length, which is obtained by the laser ranging module during the reciprocating motion along the guide rod. The operating parameters of the drive motor are calculated based on the spacing increment, and the operation of the drive motor is controlled based on the operating parameters.

[0013] The technical solution of the wind turbine maintenance basket control method provided by the embodiments of the present invention has at least the following advantages and beneficial effects: The present invention uses a ranging mechanism to obtain the tower diameter, determines the spacing increment of the drive block according to the diameter change of the connecting end, and then controls the drive motor, thereby enabling automatic adjustment of the size of the clamping part used to clamp the tower when passing through the connecting end, so that the clamp can pass smoothly. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the wind turbine maintenance basket provided in Embodiment 1 of the present invention; Figure 2 This is an assembly diagram of the wind turbine maintenance basket provided in Embodiment 1 of the present invention; Figure 3 for Figure 1 A magnified view of the structure at point A in the middle; Figure 4 This is a schematic diagram of the limiting mechanism provided in Embodiment 1 of the present invention; Figure 5 for Figure 4 A magnified schematic diagram of the structure at point B in the middle; Figure 6 This is an exploded view of the card sleeve provided in Embodiment 1 of the present invention; Figure 7 for Figure 6 A magnified schematic diagram of the structure at point C in the middle; Figure 8 This is a flowchart illustrating the wind turbine maintenance basket control method provided in Embodiment 1 of the present invention. Icons: 1-Suspended basket body, 101-Slot, 2-Limiting mechanism, 201-Limiting groove, 202-Plug-in block, 203-Threaded rod, 204-Drive block, 205-Drive rod, 206-Modular groove, 3-Fastening bolt, 4-Collar sleeve, 401-Receiving cavity, 402-Cover plate, 403-Sealing cover, 404-Groove, 405-Through hole, 406-Sponge pad, 407-Silicone pad, 5-Slide rail, 6-Laser rangefinder. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0016] Example 1 Reference Figures 1 to 7 As shown, this embodiment of the invention provides a suspended platform for wind turbine operation and maintenance. More specifically, the platform includes a platform body 1, a controller, and a limiting mechanism 2 located at the front end of the platform body 1. Specifically, the platform body 1 has a pair of slots 101, the limiting mechanism 2 is inserted into the slots 101, and the platform body 1 is provided with fastening bolts 3 that cooperate with the slots 101. The fastening bolts 3 pass through the slots 101 and connect to the limiting mechanism 2. The limiting slots 201 are provided with insertion blocks 202, each having a threaded hole. The insertion blocks 202 are inserted into the slots 101, and the threaded hole cooperates with the fastening bolts 3 to achieve a detachable connection between the limiting mechanism 2 and the platform body 1.

[0017] The limiting mechanism 2 includes a limiting groove 201. A drive motor is provided on one side of the limiting groove 201. The drive motor is electrically connected to the controller. The limiting groove 201 has an inner cavity. A threaded rod 203 connected to the output shaft of the drive motor is provided in the inner cavity of the limiting groove 201. The drive motor is used to drive the threaded rod 203 to rotate.

[0018] The threaded rod 203 has a first section and a second section with the opposite thread to the first section. The first section and the second section of the threaded rod 203 are respectively threaded with drive blocks 204. The two drive blocks 204 move towards each other or away from each other when the drive motor drives the threaded rod 203 to rotate.

[0019] Two drive blocks 204 are each connected to a drive rod 205 extending through a limiting groove 201. The limiting groove 201 has a movable groove 206 on its side wall, which slides in engagement with the drive rod 205. A retaining sleeve 4 is connected to the end of each drive rod 205 away from the drive block 204. The retaining sleeve 4 is semi-circular in shape. The retaining sleeves 4 connected to the two drive blocks 204 together form a clamping part for holding the tower cylinder. The size of the clamping part can change as the drive blocks 204 move along the threaded rod 203. Each drive rod 205 includes a short rod and a long rod. The short rod and the long rod each have an arc-shaped chamfer at the end away from the drive block 204. The arc-shaped chamfer is designed to better engage with the retaining sleeve 4.

[0020] The clamping part is provided with a ranging mechanism on the top and bottom outer sides. The ranging mechanism consists of a guide rod and a laser ranging module that is mounted on the guide rod and moves back and forth along the guide rod. The laser ranging module is communicatively connected to the controller.

[0021] See Figure 8 As shown, this embodiment also provides a suspended platform control method, applied to the suspended platform as described above, the method comprising the following steps: Step 1: Obtain the current tower diameter and the previous tower diameter. It should be noted that the ranging mechanism is not located on the same horizontal plane as the clamping part, but rather at the top and bottom of the clamping part. When the clamping part moves upward and below the connecting end, the ranging mechanism at its top can collect the diameter information of the connecting end during the ascent. This diameter information is the current tower diameter. Similarly, when the clamping part moves downward and above the connecting end, the ranging mechanism at its bottom can collect the diameter information of the connecting end during the descent. The diameter collected by the ranging mechanism at the previous moment is the tower diameter near the connecting end. The change in tower diameter can be determined based on the difference between the two diameters.

[0022] Step 2: Based on the difference between the current tower diameter and the previous tower diameter, determine the spacing increment between the two drive blocks 204. The tower diameter is calculated from the tower arc length, which is obtained by the laser ranging module during its reciprocating motion along the guide rod. It should be noted that since the laser ranging module acquires data in real time during the lifting or lowering of the basket, the acquired data points are not on the same plane. In this embodiment, the first data point acquired by the laser ranging module in unidirectional motion is taken as the initial point. The remaining data points acquired in unidirectional motion are projected onto the coordinate system of the initial point to obtain the tower arc length at the time the initial point is acquired. The central angle corresponding to the arc length acquired in unidirectional motion is 180°. This arc length is half the tower circumference. Therefore, the tower diameter can be directly derived using the circumference calculation formula, which will not be elaborated further. It should be noted that when passing the connecting end, because the diameter of the clamping part is smaller than the diameter of the connecting end, the clamping part will be stuck above or below the connecting end. Therefore, at this time, the laser ranging module can directly obtain the arc length of the connecting end during unidirectional movement.

[0023] Step 3: Calculate the operating parameters of the drive motor based on the spacing increment, and control the operation of the drive motor based on these operating parameters. These operating parameters are determined based on the distance the drive block 204 moves when the threaded rod 203 rotates one revolution.

[0024] More specifically, the sleeve 4 is provided with a receiving cavity 401, which is filled with cleaning fluid. The top of the receiving cavity 401 is provided with a cover plate 402 covering the receiving cavity 401. The cover plate 402 is provided with a liquid injection port communicating with the receiving cavity 401. The cover plate 402 is provided with a sealing cap 403, which is stepped columnar and threadedly engaged with the liquid injection port. The surface of the sleeve 4 is provided with a groove 404. Several through holes 405 communicating with the receiving cavity 401 are provided at equal intervals in the groove 404. A sponge pad 406 protruding from the groove 404 is provided in the groove 404. The cleaning fluid, together with the sponge pad 406, can clean the stains on the surface of the wind turbine tower.

[0025] More specifically, silicone pads 407 are respectively provided at both ends of the sponge pad 406. The thickness of the silicone pad 407 is half the thickness of the sponge pad 406. A hand-tightening screw is provided on a pair of silicone pads 407. One end of the hand-tightening screw passes through the silicone pad 407 and engages with the retainer 4. After the sponge pad 406 is fixed by the hand-tightening screw, it can be ensured that the sponge pad 406 fits in close contact with the wind turbine tower. There is a gap between the hand-tightening screw and the tower, so as not to cause wear on the surface of the tower.

[0026] In summary, the technical solution of the wind turbine maintenance basket and basket control method provided by the embodiments of the present invention has at least the following advantages and beneficial effects: The present invention uses a ranging mechanism to obtain the tower diameter, determines the spacing increment of the drive block 204 according to the diameter change of the connecting end, and then controls the drive motor, thereby enabling automatic adjustment of the size of the clamping part used to clamp the tower when passing through the connecting end, so that the clamping sleeve 4 can pass smoothly.

[0027] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for controlling a suspended platform used in the operation and maintenance of a wind turbine generator, characterized in that, The suspended platform includes a suspended platform body (1), a controller, and a limiting mechanism (2) located at the front end of the suspended platform body (1); The limiting mechanism (2) includes a limiting groove (201), a drive motor is provided on one side of the limiting groove (201), the drive motor is electrically connected to the controller, the limiting groove (201) has an inner cavity, and a threaded rod (203) connected to the output shaft of the drive motor is provided in the inner cavity of the limiting groove (201). The threaded rod (203) has a first section and a second section with the opposite thread to the first section. The first section and the second section of the threaded rod (203) are respectively threaded with drive blocks (204), and the two drive blocks (204) are respectively connected with drive rods (205) that pass through the limiting groove (201). The drive rod (205) is connected to a sleeve (4) at the end away from the drive block (204). The sleeve (4) is semi-circular. The sleeves (4) connected to the two drive blocks (204) together constitute a clamping part for clamping the tower. The clamping part is provided with a ranging mechanism on the top and bottom outer sides. The ranging mechanism consists of a guide rod and a laser ranging module that is mounted on the guide rod and moves back and forth along the guide rod. The laser ranging module is communicatively connected to the controller. The controller is configured to perform the following steps: obtain the tower diameter at the current moment and the tower diameter at the previous moment; determine the spacing increment between the two drive blocks (204) based on the difference between the tower diameter at the current moment and the tower diameter at the previous moment; calculate the operating parameters of the drive motor based on the spacing increment; and control the operation of the drive motor based on the operating parameters. The tower diameter is calculated from the tower arc length, which is obtained by the laser ranging module during the reciprocating motion along the guide rod.

2. The wind turbine generator maintenance basket control method as described in claim 1, characterized in that, The sleeve (4) is provided with a receiving cavity (401), and the top of the receiving cavity (401) is provided with a cover plate (402) covering the receiving cavity (401). The cover plate (402) is provided with a sealing cap (403). The surface of the sleeve (4) is provided with a groove (404). A plurality of through holes (405) communicating with the receiving cavity (401) are provided equidistantly in the groove (404). A sponge pad (406) protruding from the groove (404) is provided in the groove (404).

3. The method for controlling a suspended platform for the operation and maintenance of a wind turbine generator according to claim 1, characterized in that, The limiting groove (201) has a movable groove (206) on its side wall, and the movable groove (206) is slidably engaged with the drive rod (205).

4. The method for controlling a suspended platform for wind turbine operation and maintenance according to claim 1, characterized in that, The drive rod (205) includes a short rod and a long rod, and the short rod and the long rod are respectively provided with arc-shaped chamfers at the ends away from the drive block (204).

5. A method for controlling a suspended platform for the operation and maintenance of a wind turbine generator according to claim 2, characterized in that, The two ends of the sponge pad (406) are respectively provided with silicone pads (407). The thickness of the silicone pad (407) is half the thickness of the sponge pad (406). A pair of silicone pads (407) are provided with a hand screw. One end of the hand screw passes through the silicone pad (407) and engages with the sleeve (4).

6. The wind turbine maintenance scaffolding control method as described in any one of claims 1 to 5, characterized in that, The suspended basket body (1) is provided with a pair of slots (101), the limiting mechanism (2) is inserted into the slots (101), and the suspended basket body (1) is provided with fastening bolts (3) that cooperate with the slots (101). The fastening bolts (3) pass through the slots (101) and are connected to the limiting mechanism (2).

7. The wind turbine maintenance basket control method as described in claim 6, characterized in that, The limiting groove (201) is provided with a plug-in block (202), the plug-in block (202) has a threaded hole, the plug-in block (202) is inserted into the slot (101), and the threaded hole cooperates with the fastening bolt (3).

Images