A cleaning device for surface treatment of offshore wind turbine main shaft

Abstract

The present invention discloses a cleaning device for surface treatment of an offshore wind turbine main shaft, which relates to the technical field of wind turbine main shaft cleaning devices, and comprises a cleaning pool, on which a rotating device for supporting the rotation of the wind turbine main shaft, a side wall cleaning device for cleaning the side wall of the wind turbine main shaft, and an axial hole cleaning device for cleaning the axial hole of the wind turbine main shaft are provided. The axial hole cleaning device comprises a movable seat, a height adjustment frame, a spray washing pipe, and a water supply mechanism. The movable seat is slidably connected to the cleaning pool along the axial direction of the wind turbine main shaft, and a height adjustment frame for adjusting the height of the spray washing pipe is provided on the movable seat. The spray washing pipe is used to spray wash the axial hole of the wind turbine main shaft, and a water supply mechanism for supplying water to the spray washing pipe is connected to the spray washing pipe. The present invention can not only clean a solid wind turbine main shaft, but also clean a hollow wind turbine main shaft provided with an axial hole, thereby improving the flexibility of use.

Description

Technical Field

[0001] The invention relates to the technical field of wind turbine main shaft cleaning equipment, and in particular to a cleaning equipment for surface treatment of an offshore wind turbine main shaft. Background Art

[0002] While wind power generation is developing on land, the construction of offshore wind farms is also developing rapidly. As the main structure of wind power generation, the processing quality of the wind turbine main shaft affects the life of the wind power generation. In the marine environment, it is necessary to consider the anti-corrosion performance of the wind turbine main shaft in seawater and high humidity climate.

[0003] In order to improve the anti-corrosion performance of the wind turbine main shaft, it is necessary to perform anti-corrosion surface treatment on the wind turbine main shaft during the processing of the wind turbine main shaft. The surface treatment includes cleaning, sandblasting / zinc spraying, painting and other processes of the wind turbine main shaft. Among them, the cleaning process is to clean the scale and other dirt on the wind turbine main shaft and the oil stains contaminated during the machining process.

[0004] For example, in the Chinese patent application number CN202023092319.1, a wind turbine main shaft cleaning device is disclosed. Figure 1-2 As shown, the cleaning equipment places the two ends of the wind turbine main shaft 01 on the first support frame 02 and the second support frame 03 respectively, and a nozzle seat 05 is provided on the baffle 04 between the first support frame 02 and the second support frame 03. The nozzle 06 on the nozzle seat 05 can wash the side wall of the wind turbine main shaft 01. The first support frame 02 is provided with a driving wheel 07 and a driven wheel 08 for supporting the rotation of the wind turbine main shaft 01, and the second support frame 03 is provided with two rollers 09 for supporting the rotation of the wind turbine main shaft 01, so that the nozzle 06 can fully wash the side wall of the wind turbine main shaft 01.

[0005] However, the above cleaning equipment can only clean the solid wind turbine main shaft, but cannot clean the hollow wind turbine main shaft with shaft holes, which reduces the use flexibility of the cleaning equipment. Summary of the invention

[0006] The present invention aims at solving the above-mentioned deficiencies in the prior art and provides a cleaning device for surface treatment of offshore wind turbine main shafts. The present invention can not only clean solid wind turbine main shafts, but also clean hollow wind turbine main shafts with shaft holes, thereby improving the flexibility of use.

[0007] To achieve the above purpose, the invention provides the following technical solutions:

[0008] A cleaning device for surface treatment of an offshore wind turbine main shaft comprises a cleaning pool, on which are provided a rotating device for supporting the rotation of the wind turbine main shaft, a side wall cleaning device for cleaning the side wall of the wind turbine main shaft, and an axial hole cleaning device for cleaning the axial hole of the wind turbine main shaft. The axial hole cleaning device comprises a movable seat, a height adjustment frame, a spray washing pipe, and a water supply mechanism. The movable seat is slidably connected to the cleaning pool along the axial direction of the wind turbine main shaft, the movable seat is provided with a height adjustment frame for adjusting the height of the spray washing pipe, the spray washing pipe is used for spray washing the axial hole of the wind turbine main shaft, and the water supply mechanism for supplying water to the spray washing pipe is connected to the spray washing pipe.

[0009] Furthermore, the rotating device includes a rotating shaft, a rotating roller, a rotating seat, and a driving mechanism. Two rotating shafts are arranged side by side in the left and right directions, each rotating shaft is provided with a rotating roller, and the front and rear ends of each rotating shaft are rotatably connected to a rotating seat, the rotating seat is connected to the upper edge of the cleaning tank, and the rear side of the cleaning tank is provided with a driving mechanism for driving the left and right rotating rollers to rotate in the same direction, and the front side of the cleaning tank is provided with the shaft hole cleaning device.

[0010] Furthermore, the driving mechanism includes a driving seat, a driving motor, a main sprocket, a secondary sprocket, and a transmission chain. A driving seat is provided at the upper middle position of the left and right rotating seats, a driving motor is provided on the driving seat, two main sprockets are provided on the output shaft of the driving motor, and secondary sprockets are provided on the two rotating shafts. A main sprocket is connected to a secondary sprocket through a transmission chain.

[0011] Furthermore, the height of the driving seat is adjustable, the rotating seat is horizontally slidably connected to the upper edge of the cleaning pool along the left and right directions, and the driving mechanism also includes a pitch adjusting rod, the upper end of the pitch adjusting rod is rotatably connected to the output shaft of the driving motor, and the lower end of the pitch adjusting rod is rotatably connected to the rotating shaft.

[0012] Furthermore, a guide rod and a telescopic driving member are provided on the cleaning pool, the driving seat is vertically slidably connected to the guide rod, and the upper end of the telescopic driving member is connected to the driving seat.

[0013] Furthermore, the rotating roller is provided with a plurality of annular grooves.

[0014] Furthermore, the side wall cleaning device includes a side wall cleaning rack, a side wall water distribution pipe, a side wall nozzle, a side wall pipe, a side wall water pump, and a side wall water tank. A side wall cleaning rack is provided on the left or right side of the cleaning pool, a side wall water distribution pipe is provided on the upper end of the side wall cleaning rack, a plurality of side wall nozzles are provided on the side of the side wall water distribution pipe close to the cleaning pool, a side wall pipe is provided on the side of the side wall water distribution pipe away from the side wall nozzle, the side wall pipe is connected to the water outlet of the side wall water pump at one end away from the side wall water distribution pipe, and the water inlet of the side wall water pump is connected to the side wall water tank.

[0015] Furthermore, the water supply mechanism includes a water supply tank, a water supply pump, and a water supply hose. The water supply tank is connected to the water inlet end of the water supply pump, and the water outlet end of the water supply pump is connected to the spray pipe through the water supply hose.

[0016] Compared with the prior art, the invention has the following beneficial effects:

[0017] 1. In the cleaning equipment of the present invention, on the one hand, the solid wind turbine main shaft can be cleaned only by using the side wall cleaning device; on the other hand, the shaft hole cleaning device can be used to clean the shaft hole of the wind turbine main shaft, and in conjunction with the side wall cleaning device, the hollow wind turbine main shaft with the shaft hole can be comprehensively cleaned, thereby improving the use flexibility of the cleaning equipment of the present invention.

[0018] 2. In the cleaning equipment of the present invention, since the height-adjusting frame in the shaft hole cleaning device can adjust the height of the spray cleaning pipe, it can adapt to wind turbine main shafts with different shaft diameters. The larger the shaft diameter of the wind turbine main shaft, the higher the height of the shaft hole located at the axis center of the wind turbine main shaft. It is only necessary to use the height-adjusting frame to raise the spray cleaning pipe to adapt to the height of the shaft hole of the wind turbine main shaft, thereby further improving the flexibility of use of the cleaning equipment of the present invention.

[0019] 3. In the cleaning device of the present invention, because the movable seat in the shaft hole cleaning device can move along the axial direction of the wind turbine main shaft, when the wind turbine main shaft has no shaft hole, the movable seat can be moved away to prevent the spray cleaning pipe from interfering with the hoisting of the wind turbine main shaft; when the wind turbine main shaft has a shaft hole, the movable seat can be moved closer and the spray cleaning pipe can be inserted into the shaft hole for washing. Therefore, the cleaning device of the present invention can adapt to wind turbine main shafts with or without shaft holes, further improving the flexibility of use of the cleaning device of the present invention.

[0020] 4. In the cleaning device of the present invention, the driving mechanism can utilize one motor device to drive two rotating rollers to rotate, thereby reducing the number of motor devices, alleviating the intensity of motor device overhaul and maintenance, and helping to reduce the labor intensity of workers.

[0021] 5. The present invention allows the height of the driving seat to be adjustable, allows the rotating seat to be horizontally slidably connected to the upper edge of the cleaning tank in the left-right direction, and provides a pitch adjustment rod, so that the distance between the two rotating rollers can be adjusted when one motor device is used to drive the two rotating rollers to rotate. On the one hand, the number of motor devices can be reduced, and the intensity of motor equipment inspection and maintenance can be reduced. On the other hand, when the distance between the two rotating rollers increases, the wind turbine main shaft can be allowed to pass through the two rotating rollers and be immersed in the cleaning tank, and the wind turbine main shaft can be soaked in an alkaline cleaning agent to remove oil, which is beneficial to improve the cleaning effect of the wind turbine main shaft.

[0022] 6. Unexpectedly, when the height-adjusting frame in the shaft hole cleaning device is damaged and the height of the spray cleaning pipe cannot be adjusted, the distance between the two rotating rollers can be adjusted to allow the height of the wind turbine main shaft on the two rotating rollers to be adjusted to adapt to the height of the spray cleaning pipe whose height cannot be adjusted. The larger the distance between the two rotating rollers, the lower the axial height of the wind turbine main shaft, and the smaller the distance between the two rotating rollers, the higher the axial height of the wind turbine main shaft, so that the spray cleaning pipe can still be inserted into shaft holes of different heights for cleaning, thereby improving the flexibility of use of the cleaning equipment of the present invention and further improving the emergency response capability of the cleaning equipment of the present invention.

[0023] 7. The present invention provides a plurality of annular grooves on the rotating roller so that the cleaning agent in the cleaning pool can flow in the annular grooves, thereby reducing the contact area between the wind turbine main shaft and the rotating roller and increasing the contact area between the wind turbine main shaft and the cleaning agent, thereby improving the immersion effect of the wind turbine main shaft, which is beneficial to more thoroughly remove the oil stains on the surface of the wind turbine main shaft, and is beneficial to further improve the cleaning effect of the wind turbine main shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The structure of the background technology is shown in FIG. Figure 1 ;

[0025] Figure 2 The structure of the background technology is shown in FIG. Figure 2 ;

[0026] Figure 3 The structure of the cleaning device of Example 1 is shown in FIG. Figure 1 ;

[0027] Figure 4 The structure of the cleaning device of Example 1 is shown in FIG. Figure 2 ;

[0028] Figure 5 It is a partial structural schematic diagram of the cleaning device of Example 1;

[0029] Figure 6 This is a schematic diagram of the structure of the cleaning device in Example 2 without the side wall cleaning device and the shaft hole cleaning device;

[0030] Figure 7 The structure of the cleaning device of Example 3 is not provided with the side wall cleaning device, the shaft hole cleaning device, and the rotating roller. Figure 1 ;

[0031] Figure 8 for Figure 7 A partial enlarged view of the middle A;

[0032] Fig. 9 The structure of the cleaning device of Example 3 is not provided with the side wall cleaning device, the shaft hole cleaning device, and the rotating roller. Figure 2 ;

[0033] Fig.10 for Fig. 9 A partial enlarged view of point B in the middle;

[0034] Fig.11 This is a diagram showing the height change of the wind turbine main shaft when the distance between the left and right rotating rollers is changed in Example 3;

[0035] Fig.12 This is a schematic diagram of the structure of the rotating roller and the wind turbine main shaft in Example 4.

[0036] In the figure:

[0037] DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] Embodiment 1:

[0040] like Figure 3-5 As shown, a cleaning device for surface treatment of an offshore wind turbine main shaft comprises a cleaning pool 1.

[0041] like Figure 3-5 As shown, a cleaning pool 1 is provided with a rotating device 2, a side wall cleaning device 3, and an axial hole cleaning device 4. The rotating device 2 is used to support the rotation of the wind turbine main shaft. The side wall cleaning device 3 is used to clean the side wall of the wind turbine main shaft. The axial hole cleaning device 4 is used to clean the axial hole of the wind turbine main shaft. In the process of the rotating device 2 supporting the rotation of the wind turbine main shaft, the side wall of the wind turbine main shaft can be fully cleaned by the side wall cleaning device 3, and the axial hole of the wind turbine main shaft can be fully cleaned by the axial hole cleaning device 4.

[0042] like Figure 3-4 As shown, in this embodiment, a structural form of the rotating device 2 is provided: the rotating device 2 includes a rotating shaft 21, a rotating roller 22, a rotating seat 23, and a driving mechanism 24. Two rotating shafts 21 are arranged side by side in the left and right directions, and a rotating roller 22 is fixedly mounted on each rotating shaft 21, and the rotating roller 22 is used to directly contact the side wall of the wind turbine main shaft. The front and rear ends of each rotating shaft 21 are rotatably connected to the rotating seat 23, and the rotating seat 23 is fixedly connected to the upper edge of the cleaning tank 1. The driving mechanism 24 is used to drive the left and right rotating rollers 22 to rotate in the same direction.

[0043] like Figure 4As shown, in this embodiment, a structural form of the driving mechanism 24 is provided: the driving mechanism 24 is arranged at the rear side of the cleaning tank 1, and the driving mechanism 24 comprises a motor seat 241, a transmission motor 242, a transmission wheel 243, and a transmission belt 244. The motor seat 241 is fixedly mounted on the left rotating seat 23, and a transmission motor 242 is fixedly mounted on the motor seat 241. The transmission motor 242 can be a servo motor, and the output shaft of the transmission motor 242 is connected to the left rotating shaft 21. The transmission wheel 243 is fixedly mounted on the left rotating shaft 21 and the right rotating shaft 21, and the transmission belt 244 is sleeved on the transmission wheel 243 on the left rotating shaft 21 and the transmission wheel 243 on the right rotating shaft 21.

[0044] When the transmission motor 242 drives the left rotating shaft 21 to rotate, the transmission wheel 243 on the left rotating shaft 21 rotates in the same direction as the transmission wheel 243 on the right rotating shaft 21 through the transmission belt 244, so that the left rotating shaft 21 and the right rotating shaft 21 rotate in the same direction, and then the left rotating roller 22 and the right rotating roller 22 rotate in the same direction together.

[0045] Replaceable: the transmission wheel 243 can be replaced by a sprocket, and the transmission belt 244 can be replaced by a chain, so that the belt drive is replaced by a chain drive, and the left and right rotating rollers 22 can also rotate in the same direction.

[0046] When the wind turbine main shaft is hoisted onto the left and right rotating rollers 22 by a hoisting device (a crane can be used as the hoisting device), when the left and right rotating rollers 22 rotate in the same direction, the wind turbine main shaft supported by the left and right rotating rollers 22 also rotates by utilizing the friction between the wind turbine main shaft and the rotating rollers 22. Thus, the function of the rotating device 2 supporting the rotation of the wind turbine main shaft is achieved.

[0047] like Figure 3-4 As shown, in this embodiment, a structural form of the side wall cleaning device 3 is provided: the side wall cleaning device 3 is arranged on the left side of the cleaning pool 1. The side wall cleaning device 3 includes a side wall cleaning rack 31, a side wall water distribution pipe 32, a side wall nozzle 33, a side wall pipe 34, a side wall water pump 35, and a side wall water tank 36. The side wall cleaning rack 31 is fixedly installed on the left side of the cleaning pool 1, and the side wall water distribution pipe 32 is fixedly installed on the upper end of the side wall cleaning rack 31. The side wall water distribution pipe 32 is installed with a plurality of side wall nozzles 33 on the side close to the cleaning pool 1, and the side wall pipe 34 is fixedly installed on the side away from the side wall nozzle 33. The side wall pipe 34 is connected to the water outlet of the side wall water pump 35 at one end away from the side wall water distribution pipe 32, and the water inlet of the side wall water pump 35 is connected to the side wall water tank 36, and the side wall water tank 36 can be placed on the ground.

[0048] Under the pumping of the side wall water pump 35, the water in the side wall water tank 36 can pass through the side wall pipe 34 and the side wall water distribution pipe 32 in sequence, and be sprayed out from the side wall nozzle 33. The water sprayed from the side wall nozzle 33 is sprayed on the wind turbine main shaft supported by the rotating device 2, and the dirt on the wind turbine main shaft is washed off, and the sewage falls into the cleaning pool 1. During the cleaning process, because the rotating device 2 supports the rotation of the wind turbine main shaft, the wind turbine main shaft in the rotating state can be more fully washed by the side wall nozzle 33, which is conducive to improving the cleaning effect of the side wall of the wind turbine main shaft.

[0049] like Figure 3-5 As shown, in this embodiment, a structural form of the shaft hole cleaning device 4 is provided: the shaft hole cleaning device 4 is arranged at the front side of the cleaning tank 1. The shaft hole cleaning device 4 includes a movable seat 41, a height adjustment frame 42, a spray cleaning pipe 43, and a water supply mechanism 44.

[0050] like Figure 3-5 As shown, the movable seat 41 is arranged at the front side of the cleaning pool 1, and the movable seat 41 is arranged at a position between the left and right rotating shafts 21. The movable seat 41 can slide at the upper end of the cleaning pool 1 along the front-to-back direction, wherein the front-to-back direction is also the axial direction of the rotating shaft 21 / the axial direction of the wind turbine main shaft.

[0051] like Figure 3-5 As shown, in order to save effort, a mobile telescopic member 411 can be installed on the cleaning tank 1. The mobile telescopic member 411 can be a cylinder / oil cylinder / electric push rod. One end of the mobile telescopic member 411 is fixed on the cleaning tank 1, and the other end of the mobile telescopic member 411 is fixed on the moving seat 41. When the mobile telescopic member 411 is extended, the moving seat 41 moves forward, so that the moving seat 41 gradually moves away from the cleaning tank 1; when the mobile telescopic member 411 is shortened, the moving seat 41 moves backward, so that the moving seat 41 gradually approaches the cleaning tank 1; when the mobile telescopic member 411 stops extending, the moving seat 41 can be stable and motionless.

[0052] In addition, the movable seat 41 can be directly moved by manual pushing, and the position of the movable seat 41 can be fixed by fasteners such as screws / bolts.

[0053] like Figure 3-5As shown, a height adjustment frame 42 is provided on the movable seat 41, and the height adjustment frame 42 is used to adjust the height of the spraying pipe 43. The height adjustment frame 42 includes a fixed frame 421, a movable frame 422, and a height adjustment telescopic member 423. The fixed frame 421 is fixedly mounted on the movable seat 41, and the movable frame 422 is vertically slidably matched with the fixed frame 421. The height adjustment telescopic member 423 can adopt a cylinder / oil cylinder / electric push rod, and the lower end of the height adjustment telescopic member 423 is fixedly mounted on the fixed frame 421, and the upper end of the height adjustment telescopic member 423 is fixedly mounted on the movable frame 422. When the height adjustment telescopic member 423 is extended, the movable frame 422 moves up relative to the fixed frame 421, so that the height of the spraying pipe 43 installed on the movable frame 422 is increased; when the height adjustment telescopic member 423 is shortened, the movable frame 422 moves down relative to the fixed frame 421, so that the height of the spraying pipe 43 is reduced.

[0054] like Figure 3-5 As shown, the spray pipe 43 is a pipeline structure equipped with a spray head.

[0055] like Figure 3-5 As shown, the water supply mechanism 44 is used to supply water to the spray washing pipe 43. The water supply mechanism 44 includes a water supply tank 441, a water supply pump 442, and a water supply hose 443. The water supply tank 441 can be placed on the ground, the water supply tank 441 is connected to the water inlet end of the water supply pump 442, and the water outlet end of the water supply pump 442 is connected to the spray washing pipe 43 through the water supply hose 443.

[0056] When cleaning the shaft hole of the wind turbine main shaft, the following operations are required: (1) Because the larger the outer diameter of the wind turbine main shaft, the higher the height of the shaft hole at the axis of the wind turbine main shaft, so it is necessary to adjust the height of the spray pipe 43. At this time, the worker needs to control the length of the height adjustment telescopic member 423 in the height adjustment frame 42. The longer the height adjustment telescopic member 423 is extended, the higher the movable frame 422 is relative to the fixed frame 421, and the higher the height of the spray pipe 43 located on the movable frame 422, so that the spray pipe 43 can be inserted into the shaft hole of the wind turbine main shaft at the corresponding height. (2) The worker moves the movable seat 41 in the direction close to the wind turbine main shaft, so that the spray pipe 43 is inserted into the shaft hole of the wind turbine main shaft. (3) The worker starts the water supply pump 442. Under the pumping of the water supply pump 442, the water in the water supply tank 441 can be sprayed out from the nozzle on the spray pipe 43 through the water supply hose 443, thereby achieving the cleaning of the shaft hole of the wind turbine main shaft.

[0057] Through the above process, it can be known that in the cleaning equipment of this embodiment, on the one hand, only the side wall cleaning device 3 can be used to clean the solid wind turbine main shaft; on the other hand, the shaft hole cleaning device 4 can be used to clean the shaft hole of the wind turbine main shaft, and in conjunction with the side wall cleaning device 3, the hollow wind turbine main shaft with the shaft hole can be comprehensively cleaned, thereby improving the flexibility of use of the cleaning equipment of this embodiment.

[0058] Moreover, in the cleaning equipment of the present embodiment, since the height-adjusting frame 42 in the shaft hole cleaning device 4 can adjust the height of the spray cleaning pipe 43, it can adapt to wind turbine main shafts with different shaft diameters. The larger the shaft diameter of the wind turbine main shaft, the higher the height of the shaft hole located at the axis center of the wind turbine main shaft. It is only necessary to use the height-adjusting frame 42 to raise the spray cleaning pipe 43 to adapt to the height of the shaft hole of the wind turbine main shaft, thereby further improving the flexibility of use of the cleaning equipment of the present embodiment.

[0059] Furthermore, in the cleaning device of this embodiment, because the movable seat 41 in the shaft hole cleaning device 4 can move along the axial direction of the wind turbine main shaft, when the wind turbine main shaft has no shaft hole, the movable seat 41 can be moved away to prevent the spray cleaning pipe 43 from interfering with the hoisting of the wind turbine main shaft; when the wind turbine main shaft has a shaft hole, the movable seat 41 can be moved closer and the spray cleaning pipe 43 can be inserted into the shaft hole for washing. Therefore, the cleaning device of this embodiment can adapt to wind turbine main shafts with or without shaft holes, further improving the use flexibility of the cleaning device of this embodiment.

[0060] Embodiment 2:

[0061] This embodiment 2 makes further improvements on the basis of embodiment 1:

[0062] like Figure 6 As shown, in this embodiment 2, a second structural form of the driving mechanism 24 is provided: the driving mechanism 24 is arranged at the rear side of the cleaning tank 1. The driving mechanism 24 comprises a driving seat 245, a driving motor 246, a main sprocket 247, a secondary sprocket 248, and a transmission chain 249. The driving seat 245 is fixedly mounted above the middle of the left and right rotating seats 23, and a driving motor 246 is fixedly mounted on the driving seat 245. The driving motor 246 can be a servo motor. Two main sprockets 247 are fixedly mounted on the output shaft of the driving motor 246, and a secondary sprocket 248 is fixedly mounted on each of the left and right rotating shafts 21. One main sprocket 247 is connected to one secondary sprocket 248 through a transmission chain 249.

[0063] like Figure 6 As shown, when the driving motor 246 drives the two main sprockets 247 to rotate clockwise together, each main sprocket 247 drives a secondary sprocket 248 to rotate clockwise through the transmission chain 249, so that the two secondary sprockets 248 rotate in the same direction, thereby making the left and right rotating shafts 21 rotate in the same direction, and then making the left and right rotating rollers 22 rotate in the same direction.

[0064] When the wind turbine main shaft is hoisted onto the left and right rotating rollers 22, when the left and right rotating rollers 22 rotate in the same direction, the wind turbine main shaft supported by the left and right rotating rollers 22 also rotates by utilizing the friction between the wind turbine main shaft and the rotating rollers 22. Thus, the function of the rotating device 2 for supporting the rotation of the wind turbine main shaft is realized.

[0065] It can be seen from the above introduction that the first structural form of the driving mechanism 24 provided in Example 1 and the second structural form of the driving mechanism 24 provided in Example 2 can both drive the left and right rotating rollers 22 to rotate in the same direction.

[0066] Moreover, whether it is the driving mechanism 24 in Example 1 or the driving mechanism 24 in Example 2, one motor device (transmission motor 242 / drive motor 246) can be used to drive the two rotating rollers 22 to rotate, thereby reducing the number of motor devices, alleviating the intensity of motor equipment inspection and maintenance, and helping to reduce the labor intensity of workers.

[0067] Embodiment 3:

[0068] This embodiment 3 makes further improvements on the basis of embodiment 2:

[0069] like Figure 7-10 As shown, the height of the driving seat 245 in the driving mechanism 24 is adjustable. This embodiment provides a structural form for adjusting the height of the driving seat 245: a guide rod 2410 is fixedly installed on the upper edge of the cleaning tank 1, and the driving seat 245 is sleeved on the guide rod 2410. The driving seat 245 can slide vertically along the guide rod 2410. A driving telescopic member 2411 is also installed on the cleaning tank 1. The driving telescopic member 2411 can adopt an oil cylinder / air cylinder / electric push rod. The upper end of the driving telescopic member 2411 is fixedly installed on the driving seat 245, and the lower end of the driving telescopic member 2411 is fixedly installed on the cleaning tank 1. When the driving telescopic member 2411 is extended, the driving seat 245 is pushed up by the driving telescopic member 2411; when the driving telescopic member 2411 is shortened, the driving seat 245 is driven by the driving telescopic member 2411 to move downward.

[0070] And, if Figure 7-10 As shown, the left and right rotating seats 23 located at the front and rear sides of the cleaning tank 1 can slide left and right on the upper edge of the cleaning tank 1.

[0071] Also, if Figure 7-10 As shown, the driving mechanism 24 further includes a pitch-adjusting rod 2412 , the upper end of which is rotatably connected to the output shaft of the driving motor 246 , and the lower end of which is rotatably connected to the rotating shaft 21 .

[0072] When the height of the driving seat 245 increases, the driving motor 246 and the main sprocket 247 on the driving seat 245 rise accordingly, and the driving motor 246 drives the upper end of the distance adjusting rod 2412 to rise, so that the angle between the left and right distance adjusting rods 2412 is reduced, and the distance between the lower ends of the two distance adjusting rods 2412 is reduced, so that the distance between the left and right rotating seats 23 is reduced, and then the distance between the left and right rotating rollers 22 is reduced.

[0073] When the height of the driving seat 245 is lowered, the driving motor 246 and the main sprocket 247 on the driving seat 245 are lowered accordingly, and the driving motor 246 drives the upper end of the pitch-adjusting rod 2412 to be lowered, so that the angle between the left and right pitch-adjusting rods 2412 increases, and the distance between the lower ends of the two pitch-adjusting rods 2412 increases, so that the distance between the left and right rotating seats 23 increases, and then the distance between the left and right rotating rollers 22 increases.

[0074] During the lifting and lowering process of the driving seat 245, each distance adjusting rod 2412 can maintain the distance between the output shaft of the driving motor 246 and the rotating shaft 21, so that the transmission chain 249 can be kept in an open state, and then the main sprocket 247 can continue to drive the secondary sprocket 248 to rotate.

[0075] When the wind turbine main shaft is only flushed, the probability of oil stains remaining on the surface of the wind turbine main shaft increases. Therefore, in order to thoroughly clean the oil stains on the surface of the wind turbine main shaft, the following operations can be performed: (1) Workers use lifting equipment, such as a traveling crane, to hang both ends of the wind turbine main shaft. (2) Workers lower the height of the drive seat 245 so that the distance between the left and right rotating rollers 22 increases, until the distance between the left and right rotating rollers 22 is sufficient to allow the wind turbine main shaft to pass downward, and then stop lowering the height of the drive seat 245. (3) Workers use the traveling crane to lower the wind turbine main shaft so that the wind turbine main shaft is immersed in the cleaning tank 1, and pour an alkaline cleaning agent into the cleaning tank 1, so that the oil stains on the surface of the wind turbine main shaft can fully react with the cleaning agent, thereby improving the effect of removing the oil stains, which is beneficial to improving the cleaning effect of the wind turbine main shaft.

[0076] After cleaning the oil stains on the surface of the wind turbine main shaft, the wind turbine main shaft can be lifted out of the cleaning pool 1 by using a crane, and the worker then raises the height of the drive seat 245 so that the left and right rotating rollers 22 are close to each other, and then the wind turbine main shaft is placed on the left and right rotating rollers 22, and the side wall cleaning device 3 and the shaft hole cleaning device 4 are used to clean the residual cleaning agent on the wind turbine main shaft.

[0077] Through the above process, it can be known that by making the height of the driving seat 245 adjustable, making the rotating seat 23 horizontally slidably connected to the upper edge of the cleaning tank 1 in the left-right direction, and providing the pitch adjusting rod 2412, the distance between the two rotating rollers 22 can be adjusted when one driving motor 246 is used to drive the two rotating rollers 22 to rotate. On the one hand, the number of motor equipment can be reduced, and the intensity of motor equipment inspection and maintenance can be reduced. On the other hand, when the distance between the two rotating rollers 22 increases, the wind turbine main shaft can be allowed to pass through the two rotating rollers 22 and be immersed in the cleaning tank 1, and the wind turbine main shaft can be degreased and soaked in an alkaline cleaning agent, which is conducive to improving the cleaning effect of the wind turbine main shaft.

[0078] Unexpectedly, when the height adjustment frame 42 in the shaft hole cleaning device 4 is damaged and the height of the spray pipe 43 cannot be adjusted, the distance between the two rotating rollers 22 can be adjusted so that the height of the wind turbine main shaft on the two rotating rollers 22 can be adjusted to adapt to the height of the spray pipe 43 whose height cannot be adjusted. The larger the distance between the two rotating rollers 22, the lower the axis height of the wind turbine main shaft, and the smaller the distance between the two rotating rollers 22, the higher the axis height of the wind turbine main shaft. Thus, the spray pipe 43 can still be inserted into shaft holes of different heights for cleaning, which improves the use flexibility of the cleaning device of this embodiment and further improves the emergency response capability of the cleaning device of this embodiment.

[0079] like Fig.11 As shown, when the distance between the two rotating rollers 22 increases from L1 to L2, the axial center height of the wind turbine main shaft 01 decreases by H.

[0080] Embodiment 4:

[0081] This embodiment 4 makes further improvements on the basis of embodiment 3:

[0082] like Fig.12 As shown, when the wind turbine main shaft 01 is immersed in the cleaning pool 1, in order to increase the contact area between the wind turbine main shaft 01 and the cleaning agent to improve the cleaning effect of the wind turbine main shaft 01, a plurality of annular grooves 221 are provided on the rotating roller 22, so that the cleaning agent in the cleaning pool 1 can flow in the annular grooves 221, so that the wind turbine main shaft 01 reduces the contact area with the rotating roller 22, and increases the contact area between the wind turbine main shaft 01 and the cleaning agent, thereby improving the immersion effect of the wind turbine main shaft 01, which is beneficial to more thoroughly remove the oil stains on the surface of the wind turbine main shaft 01, and is beneficial to further improve the cleaning effect of the wind turbine main shaft 01.

[0083] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A cleaning device for surface treatment of an offshore wind turbine main shaft, comprising a cleaning pool, on which a rotating device for supporting the rotation of the wind turbine main shaft and a side wall cleaning device for cleaning the side wall of the wind turbine main shaft are provided, characterized in that: The cleaning pool is also provided with an axial hole cleaning device for cleaning the axial hole of the wind turbine main shaft, the axial hole cleaning device includes a movable seat, a height adjustment frame, a spray cleaning pipe, and a water supply mechanism, the movable seat is slidably connected to the cleaning pool along the axial direction of the wind turbine main shaft, the movable seat is provided with a height adjustment frame for adjusting the height of the spray cleaning pipe, the spray cleaning pipe is used to spray the axial hole of the wind turbine main shaft, and the water supply mechanism for supplying water to the spray cleaning pipe is connected to the spray cleaning pipe; The rotating device comprises a rotating shaft, a rotating roller, a rotating seat, and a driving mechanism. Two rotating shafts are arranged side by side in the left and right directions. Each rotating shaft is provided with a rotating roller. The front and rear ends of each rotating shaft are rotatably connected with a rotating seat. The rotating seat is horizontally slidably connected with the upper edge of the cleaning tank in the left and right directions. The rear side of the cleaning tank is provided with a driving mechanism for driving the left and right rotating rollers to rotate in the same direction. The driving mechanism includes a driving seat, a driving motor, a main sprocket, a secondary sprocket, a transmission chain, and a pitch-adjusting rod. A driving seat is provided at the middle position above the left and right rotating seats. The height of the driving seat is adjustable. A driving motor is provided on the driving seat. Two main sprockets are provided on the output shaft of the driving motor. Secondary sprockets are provided on the two rotating shafts. One main sprocket is connected to one secondary sprocket through a transmission chain. The upper end of the pitch-adjusting rod is rotatably connected to the output shaft of the driving motor, and the lower end of the pitch-adjusting rod is rotatably connected to the rotating shaft. When the distance between the two rotating rollers increases, the wind turbine main shaft passes through the two rotating rollers and is immersed in the cleaning pool, and the wind turbine main shaft is immersed in an alkaline cleaning agent for degreasing.

2. The cleaning equipment for surface treatment of offshore wind turbine main shaft according to claim 1, characterized in that: The shaft hole cleaning device is arranged on the front side of the cleaning tank.

3. The cleaning equipment for surface treatment of offshore wind turbine main shaft according to claim 1, characterized in that: The cleaning pool is provided with a guide rod and a drive telescopic member, the drive seat is vertically slidably connected to the guide rod, and the upper end of the drive telescopic member is connected to the drive seat.

4. The cleaning equipment for surface treatment of offshore wind turbine main shaft according to claim 1, characterized in that: The rotating roller is provided with a plurality of annular grooves.

5. The cleaning equipment for surface treatment of offshore wind turbine main shaft according to claim 1, characterized in that: The side wall cleaning device includes a side wall cleaning rack, a side wall water distribution pipe, a side wall nozzle, a side wall pipeline, a side wall water pump, and a side wall water tank. The side wall cleaning rack is provided on the left or right side of the cleaning pool, and the upper end of the side wall cleaning rack is provided with a side wall water distribution pipe. The side wall water distribution pipe is provided with a plurality of side wall nozzles on the side close to the cleaning pool, and the side wall water distribution pipe is provided with a side wall pipeline on the side away from the side wall nozzle. The side wall pipeline is connected to the water outlet of the side wall water pump at one end away from the side wall water distribution pipe, and the water inlet of the side wall water pump is connected to the side wall water tank.

6. The cleaning equipment for surface treatment of offshore wind turbine main shaft according to claim 1, characterized in that: The water supply mechanism comprises a water supply tank, a water supply pump and a water supply hose. The water supply tank is connected to the water inlet of the water supply pump, and the water outlet of the water supply pump is connected to the spray pipe through the water supply hose.

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