A wind power bolt anti-corrosion spraying device

Abstract

The application belongs to the technical field of wind power bolt corrosion prevention, and discloses a wind power bolt corrosion prevention spraying device, which comprises a conveying frame, one end of the conveying frame is provided with a first servo motor, the driving end of the first servo motor is fixed with a chain wheel, one end of a transmission mechanism is provided with a blocking mechanism, the cooperation of the second servo motor, the first transmission gear, the supporting rod and other structures enables the device to realize the synchronous and opposite precise movement of two groups of spraying mechanisms, solves the core problems that the existing spraying device cannot adapt to wind power bolts of different lengths and has low alignment precision, the second servo motor drives the first transmission gear to rotate, through the meshing transmission with the rack, drives two groups of liquid storage boxes to move synchronously and oppositely along the supporting rod, enables the inner spraying pipe to be precisely inserted into the bolt, the outer spraying pipe aligns with the outer wall of the bolt, and the blocking mechanism moves synchronously, finally, the effect of improving the spraying alignment precision, adapting to bolts of multiple specifications, realizing the synchronous spraying and blocking action is achieved.

Description

Technical Field

[0001] This invention belongs to the field of wind turbine bolt anti-corrosion technology, specifically a wind turbine bolt anti-corrosion spraying device. Background Technology

[0002] As a crucial component of renewable energy, wind power has experienced rapid development globally in recent years. High-strength wind turbine bolts are extensively used for connections in critical components such as towers, hubs, and yaw systems. These bolts are constantly exposed to the complex and harsh outdoor environment. Bolts in offshore wind farms, in particular, must withstand continuous corrosion from high salt spray and high humidity. Their corrosion resistance directly impacts the overall structural safety and service life of the wind turbine. Therefore, wind turbine bolts must undergo rigorous and standardized anti-corrosion coating treatment before leaving the factory to form a uniform and dense protective layer on the bolt surface, effectively isolating them from external corrosive media. Currently, anti-corrosion coating of wind turbine bolts mainly employs two methods: manual spraying and simple automated spraying. While manual spraying requires less equipment investment, it suffers from numerous insurmountable drawbacks. Production efficiency is low, making it difficult to meet the demands of large-scale production in the wind power industry. Coating quality is also inconsistent, easily leading to uneven coating thickness, missed areas at the thread roots, and drips. Furthermore, the volatile anti-corrosion components released during the spraying process pose serious health risks to operators, and the uncontrolled emissions do not comply with current environmental protection requirements.

[0003] Publication No. CN120438216A discloses an automatic internal and external spraying device for bolt sleeves, including a base. A chain conveyor is fixedly installed on the top of the base, and a bolt sleeve support fixture is provided on the chain plate of the chain conveyor. A spraying chamber, a preheating component, and a fixture cleaning component are provided on the outside of the base. When the bolt sleeve is externally sprayed, the internal spraying component can simultaneously spray the inside of the bolt sleeve, improving spraying efficiency. After the spraying contacts, the internal and external air blowing components of the bolt sleeve blow air to the inside and outside of the bolt sleeve, accelerating the curing of the coating. The entire process only requires the bolt sleeve clamping component to work for one cycle, eliminating the need for multiple sets of bolt sleeve clamping components, reducing space occupation, and improving spraying efficiency. Furthermore, because the internal and external spraying are carried out simultaneously, it can ensure that the bolt sleeve can be sprayed in time after preheating, ensuring the spraying quality.

[0004] This device can achieve simultaneous internal and external spraying of bolt sleeves and accelerate curing, reducing the space occupied by the equipment and improving spraying efficiency and quality to a certain extent. However, it cannot be adapted to the batch continuous spraying of long rod-shaped workpieces such as wind turbine bolts. Moreover, its spraying mechanism cannot accurately align the inner and outer walls of multiple sets of bolts, making it difficult to ensure the uniformity of the coating when multiple workpieces are sprayed at the same time. Therefore, a wind turbine bolt anti-corrosion spraying device is proposed, which can realize the continuous conveying of multiple sets of wind turbine bolts and simultaneous and accurate internal and external spraying, greatly improving production efficiency and ensuring that the anti-corrosion coating evenly covers all surfaces of the bolts. Summary of the Invention

[0005] To address the problems mentioned in the background section, the present invention provides a wind turbine bolt anti-corrosion spraying device.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a wind turbine bolt anti-corrosion spraying device, comprising a conveyor frame, a first servo motor installed at one end of the conveyor frame, a sprocket fixed at the drive end of the first servo motor, a chain meshing with the outside of the sprocket, a support base fixed at the top end of the chain, a transmission mechanism installed inside the conveyor frame, a spraying mechanism installed at one end of the transmission mechanism, and a blocking mechanism installed at one end of the transmission mechanism; The transmission mechanism includes a second servo motor, a first transmission gear, and a support rod. The second servo motor is fixed inside the conveyor frame, the first transmission gear is fixed to the drive end of the second servo motor, and the support rod is slidably connected inside the conveyor frame. One end of the support rod is fixed with a liquid storage box. The spraying mechanism includes a delivery pump, a diversion pipe, and a delivery cylinder. The delivery pump is fixed to the top of the liquid storage box, the output end of the delivery pump is fixed with a diversion pipe, and one end of the diversion pipe is fixedly connected to the delivery cylinder. The barrier mechanism includes a support frame, a guide frame, and a support plate. The support frame is fixed to the outside of the conveyor frame, the guide frame is fixed to one end of the support frame, and the support plate is slidably connected to the inside of the guide frame.

[0007] Preferably, a rack is fixed to one end of the liquid storage box, and two sets of liquid storage boxes are provided. The liquid storage boxes are symmetrically distributed about the central axis of the conveyor frame, and the first transmission gear and the rack are meshed together.

[0008] Preferably, one end of the conveying cylinder is rotatably connected to a conveying disc, one end of the conveying disc is fixed with an inner spray pipe, one end of the conveying disc is fixed with an outer spray pipe, one end of the liquid storage box is fixed with a third servo motor, and the drive end of the third servo motor is fixed with a second transmission gear.

[0009] Preferably, the input end of the delivery pump is located inside the liquid storage box, the output end of the delivery pump is connected to the diversion pipe, the output end of the diversion pipe is connected to the delivery cylinder, the output end of the delivery cylinder is connected to the delivery disc, the output end of the delivery disc is connected to the inner spray pipe, and the output end of the delivery disc is connected to the outer spray pipe.

[0010] Preferably, there are two sets of conveying cylinders, which are symmetrically distributed about the central axis of the liquid storage box. Several sets of teeth are fixed on the outside of the conveying disc, and the second transmission gear is meshed with the conveying disc.

[0011] Preferably, the inner nozzle has several sets of nozzles fixed on its exterior, the nozzles being arranged in an array, and the outer nozzle has two sets, which are symmetrically distributed about the central axis of the conveyor plate.

[0012] Preferably, a baffle is fixed to one end of the support plate, an extension plate is fixed to one end of the guide frame, a return spring is fixed to the top of the extension plate, a support rod is fixed to the top of the liquid storage box, a connecting rod is rotatably connected to one end of the support rod, a connecting rod is rotatably connected to the support plate, and a torsion spring is installed at one end of the support rod.

[0013] Preferably, there are two sets of support frames, which are symmetrically distributed about the central axis of the conveyor frame, and two sets of guide frames, which are symmetrically distributed about the central axis of the support frames.

[0014] Preferably, the top end of the return spring is fixedly connected to the support plate, and the return spring is used to press the support plate and keep it moving upward.

[0015] Preferably, the support rods are provided in two sets, and the support rods are symmetrically distributed about the central axis of the baffle. The torsion spring is used to pull the connecting rod.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention, through the coordination of a second servo motor, a first transmission gear, and a support rod, enables the device to achieve synchronous and precise opposing movement of two sets of spraying mechanisms. This solves the core problems of existing spraying devices, such as their inability to adapt to wind turbine bolts of different lengths and low alignment accuracy. The second servo motor drives the first transmission gear to rotate, and through meshing with the rack, it drives the two sets of liquid storage boxes to move synchronously and opposingly along the support rod. This allows the inner spray nozzle to be precisely inserted into the bolt, and the outer spray nozzle to be aligned with the outer wall of the bolt. At the same time, the blocking mechanism moves synchronously, ultimately achieving the effects of improving spraying alignment accuracy, adapting to bolts of multiple specifications, and achieving synchronous spraying and blocking actions.

[0017] This invention, through the coordinated arrangement of a delivery pump, a distribution pipe, and delivery cylinders, enables the device to achieve synchronous rotary spraying of the inner and outer walls of wind turbine bolts. This solves the core problems of existing devices, such as the inability to simultaneously cover the inner and outer surfaces of bolts, uneven coating thickness, and missed areas. The delivery pump draws the anti-corrosion agent from the storage box, which is then distributed to two sets of delivery cylinders via the distribution pipe. The agent is then distributed to the inner and outer spray pipes via a delivery disc. A third servo motor drives the delivery disc to rotate circumferentially, achieving spraying without dead angles. Ultimately, this ensures a uniform and dense coating, eliminates missed spraying defects, and improves the quality of the anti-corrosion coating.

[0018] This invention, through the coordinated arrangement of support frames, guide frames, and support plates, enables the device to automatically isolate the spraying area from the conveying area, solving the core problem of paint mist splashing and contaminating adjacent workpieces during the spraying process, thus causing paint waste. The support frames and guide frames provide stable guidance for the support plate. When the liquid storage box moves, the support plate slides downward through the support connecting rod and connecting rod, allowing the baffle to insert between adjacent bolts to form an independent spraying space. After spraying is completed, it automatically resets, ultimately achieving the effects of avoiding cross-contamination of paint mist, reducing paint waste, and ensuring the cleanliness of the workpiece surface. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall wind power bolt removal structure of the present invention; Figure 3 This is a partial internal structure diagram of the present invention; Figure 4 This is a schematic diagram of the transmission mechanism structure of the present invention; Figure 5 This is a schematic diagram of the transmission mechanism of the present invention; Figure 6 For the present invention Figure 5 Enlarged cross-sectional view of a portion of point A in the middle section; Figure 7 For the present invention Figure 5 Enlarged cross-sectional view of section B in the middle section; Figure 8 This is a schematic diagram of the barrier mechanism in the barrier state of the present invention; Figure 9 For the present invention Figure 8 Enlarged cross-sectional view of section C in the middle; Figure 10 This is a schematic diagram of the barrier mechanism structure of the present invention.

[0020] In the diagram: 1. Conveyor frame; 2. First servo motor; 3. Sprocket; 4. Chain; 5. Support base; 6. Transmission mechanism; 601. Second servo motor; 602. First transmission gear; 603. Support rod; 604. Liquid storage box; 605. Rack; 7. Spraying mechanism; 701. Conveyor pump; 702. Diverter pipe; 703. Conveyor cylinder; 704. Conveyor tray; 705. Inner spray nozzle; 706. Outer spray nozzle; 707. Third servo motor; 708. Second transmission gear; 8. Barrier mechanism; 801. Support frame; 802. Guide frame; 803. Support plate; 804. Baffle; 805. Extension plate; 806. Return spring; 807. Support connecting rod; 808. Connecting rod; 809. Torsion spring. Detailed Implementation

[0021] 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. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] like Figures 1 to 10 As shown, the present invention provides a wind turbine bolt anti-corrosion spraying device, including a conveyor frame 1, a first servo motor 2 installed at one end of the conveyor frame 1, a sprocket 3 fixed at the drive end of the first servo motor 2, a chain 4 meshing with the outside of the sprocket 3, a support seat 5 fixed at the top end of the chain 4, a transmission mechanism 6 installed inside the conveyor frame 1, a spraying mechanism 7 installed at one end of the transmission mechanism 6, and a blocking mechanism 8 installed at one end of the transmission mechanism 6.

[0023] The above solution is adopted: by placing the wind power bolt on top of the support base 5, and starting the first servo motor 2 to drive the sprocket 3 to rotate, the sprocket 3 to drive the chain 4 to move, thereby driving the support base 5 and the wind power bolt on top to move, and then stopping the conveying after moving the wind power bolt to the anti-corrosion spraying area.

[0024] like Figures 1 to 8 As shown, the transmission mechanism 6 includes a second servo motor 601, a first transmission gear 602, and a support rod 603. The second servo motor 601 is fixed inside the conveyor frame 1, the first transmission gear 602 is fixed to the drive end of the second servo motor 601, and the support rod 603 is slidably connected inside the conveyor frame 1. One end of the support rod 603 is fixed with a liquid storage box 604, and one end of the liquid storage box 604 is fixed with a rack 605. Two sets of liquid storage boxes 604 are provided, and the liquid storage boxes 604 are symmetrically distributed about the central axis of the conveyor frame 1. The first transmission gear 602 and the rack 605 are meshed together.

[0025] The above scheme is adopted as follows: by starting the second servo motor 601 to drive the first transmission gear 602 to rotate, the two sets of racks 605 move in opposite directions, so that the two sets of liquid storage boxes 604 retract or expand inward. When expanded, the wind power bolt can be transported. When retracted, the inner spray pipe 705 is inserted into the inside of the wind power bolt, and the two sets of outer spray pipes 706 are located outside the wind power bolt for spraying. After spraying, the expansion is used to transport the wind power bolt.

[0026] like Figures 1 to 7 As shown, the spraying mechanism 7 includes a delivery pump 701, a diverter pipe 702, and a delivery cylinder 703. The delivery pump 701 is fixed to the top of the liquid storage box 604. The output end of the delivery pump 701 is fixed to the diverter pipe 702. One end of the diverter pipe 702 is fixedly connected to the delivery cylinder 703. One end of the delivery cylinder 703 is rotatably connected to a delivery disc 704. One end of the delivery disc 704 is fixed to an inner spray pipe 705, and one end of the delivery disc 704 is fixed to an outer spray pipe 706. One end of the liquid storage box 604 is fixed to a third servo motor 707. The drive end of the third servo motor 707 is fixed to a second transmission gear 708. The input end of the delivery pump 701 is located inside the liquid storage box 604, and the output end of the delivery pump 701... The output end of the conveyor is connected to the diversion pipe 702, the output end of the diversion pipe 702 is connected to the conveying cylinder 703, the output end of the conveying cylinder 703 is connected to the conveying disc 704, the output end of the conveying disc 704 is connected to the inner nozzle 705, and the output end of the conveying disc 704 is connected to the outer nozzle 706. There are two sets of conveying cylinders 703, which are symmetrically distributed about the central axis of the liquid storage box 604. Several sets of teeth are fixed on the outside of the conveying disc 704. The second transmission gear 708 meshes with the conveying disc 704. Several sets of spray holes are fixed on the outside of the inner nozzle 705, and the spray holes are distributed in an array. There are two sets of outer nozzles 706, which are symmetrically distributed about the central axis of the conveying disc 704.

[0027] The above solution involves inserting the inner spray pipe 705 and the outer spray pipe 706, then starting the delivery pump 701 to deliver the corrosion inhibitor inside the storage box 604. The corrosion inhibitor is then delivered through the diversion pipe 702 and the delivery cylinder 703, and then delivered into the delivery disc 704 through the delivery cylinder 703 before being discharged through the inner spray pipe 705 and the outer spray pipe 706, spraying it onto the inside and outside of the wind turbine bolts. The third servo motor 707 is then started to drive the second transmission gear 708 to rotate, which in turn drives the two sets of delivery discs 704 to rotate, thereby driving the inner spray pipe 705 and the outer spray pipe 706 to rotate and spray, thus improving the spraying efficiency.

[0028] like Figures 1 to 10As shown, the barrier mechanism 8 includes a support frame 801, a guide frame 802, and a support plate 803. The support frame 801 is fixed to the outside of the conveyor frame 1, the guide frame 802 is fixed to one end of the support frame 801, and the support plate 803 is slidably connected to the inside of the guide frame 802. A baffle 804 is fixed to one end of the support plate 803, an extension plate 805 is fixed to one end of the guide frame 802, a return spring 806 is fixed to the top of the extension plate 805, a support connecting rod 807 is fixed to the top of the liquid storage box 604, and a connecting rod 808 is rotatably connected to one end of the support connecting rod 807. One end of the connecting rod 808 is connected to the support plate 801. 3. Rotary connection: One end of the support link 807 is equipped with a torsion spring 809. Two sets of support frames 801 are provided, and the support frames 801 are symmetrically distributed about the central axis of the conveyor frame 1. Two sets of guide frames 802 are provided, and the guide frames 802 are symmetrically distributed about the central axis of the support frame 801. The top end of the return spring 806 is fixedly connected to the support plate 803. The return spring 806 is used to squeeze the support plate 803 and keep it moving upward. Two sets of support links 807 are provided, and the support links 807 are symmetrically distributed about the central axis of the baffle 804. The torsion spring 809 is used to pull the connecting rod 808.

[0029] The above scheme is adopted as follows: When the first transmission gear 602 rotates, it drives the two sets of liquid storage boxes 604 to move inward, which in turn drives the position of the support connecting rod 807 to move inward. The movement of the support connecting rod 807 causes the angle between the support connecting rod 807 and the connecting rod 808 to change. This causes the support plate 803 to move downward through the four sets of connecting rods 808, so that the baffle 804 is located between the two sets of wind turbine bolts, isolating the two sets of wind turbine bolts and ensuring the efficiency of spraying the anti-corrosion agent. After the two sets of liquid storage boxes 604 are reset, the restoring force of the reset spring 806 and the torsion spring 809 resets the support plate 803 and the connecting rod 808, so that the wind turbine bolts can continue to be transported.

[0030] The working principle and usage process of this invention are as follows: The wind turbine bolt to be sprayed is placed horizontally in the top positioning groove of the support base 5, so that the axis of the bolt is perpendicular to the running direction of the conveyor frame 1, and the openings at both ends of the bolt face the spraying mechanism 7 on both sides. The first servo motor 2 is started, and the drive end of the first servo motor 2 drives the sprocket 3 to rotate in the forward direction. The sprocket 3 drives the chain 4 to move continuously in a ring along the top surface of the conveyor frame 1. The chain 4 drives the support base 5 fixed at the top to move synchronously, so that the wind turbine bolt moves with the support base 5 towards the spraying station. When the position sensor detects that the wind turbine bolt has reached the spraying station, it sends a signal to the control system. The control system controls the first servo motor 2 to stop running, and the sprocket 3 to stop rotating, so that the wind turbine bolt stops at the preset spraying position.

[0031] The second servo motor 601 is started, and the drive end of the second servo motor 601 drives the first transmission gear 602 to rotate in the forward direction. The first transmission gear 602 drives the two sets of liquid storage boxes 604 to move synchronously in opposite directions along the support rod 603 through meshing with the racks 605 on both sides. During the movement of the liquid storage boxes 604, the spraying mechanism 7 moves synchronously as a whole, so that the inner spray pipes 705 on both sides are horizontally inserted into the bolt from the openings at both ends of the wind power bolt. The outer spray pipes 706 move synchronously to the preset spraying position on the outer wall of the wind power bolt. When the inner spray pipes 705 are inserted to the set depth inside the bolt, the control system controls the second servo motor 601 to stop running, and the two sets of liquid storage boxes 604 remain stationary.

[0032] As the two sets of liquid storage boxes 604 move synchronously in opposite directions, they drive the support rods 807 fixed at their tops to move inwards synchronously. When the support rods 807 move inwards, they drive the connecting rods 808 to rotate around the end of the support rods 807, causing the angle between the connecting rods 808 and the support rods 807 to gradually increase. During the rotation of the connecting rods 808, the support plate 803 is pulled to slide downwards along the guide frame 802, compressing the return spring 806. At the same time, the torsion spring 809 generates torsional elastic force. When the liquid storage boxes 604 stop moving, the support plate 803 drives the baffle 804 to descend to the lowest position, so that the baffle 804 is inserted between the two adjacent sets of wind turbine bolts, separating the spraying area from the conveying area and forming an independent closed spraying space.

[0033] The delivery pump 701 is started, and the delivery pump 701 draws the anti-corrosion coating from the storage box 604 and delivers it to the diversion pipe 702 through the output end of the delivery pump 701. The diversion pipe 702 evenly distributes the coating to two sets of delivery cylinders 703. The coating enters the internal cavity of the delivery plate 704 through the delivery cylinders 703. The delivery plate 704 delivers the coating to the inner spray pipe 705 and the outer spray pipe 706 respectively. The inner spray pipe 705 sprays the coating onto the inner wall of the wind turbine bolt through the spray holes distributed in an array on its outer wall, and the outer spray pipe 706 sprays the coating onto the outer wall of the wind turbine bolt.

[0034] The third servo motor 707 is started synchronously. The drive end of the third servo motor 707 drives the second transmission gear 708 to rotate. The second transmission gear 708 drives the conveyor disk 704 to rotate circumferentially around the axis of the conveyor cylinder 703 through meshing with the external teeth of the conveyor disk 704. The conveyor disk 704 drives the inner spray pipe 705 and the outer spray pipe 706 to rotate synchronously, so that the spray holes of the inner spray pipe 705 spray evenly along the inner wall of the bolt, and the outer spray pipe 706 sprays evenly along the outer wall of the bolt, realizing 360° full coverage spraying of the inner and outer walls of the wind power bolt. During the spraying process, the baffle 804 blocks the paint mist from spreading to adjacent workpieces and the conveying area, preventing the paint mist from contaminating the unsprayed workpieces.

[0035] When the set spraying time is reached, the control system sequentially shuts down the delivery pump 701 and the third servo motor 707, stops the paint delivery and the rotation of the spray nozzle, starts the second servo motor 601 to rotate in the opposite direction, drives the first transmission gear 602 to rotate in the opposite direction, and drives the two sets of liquid storage boxes 604 to move in the opposite direction synchronously through the rack 605, so that the inner spray nozzle 705 gradually exits horizontally from the inside of both ends of the wind power bolt, and the outer spray nozzle 706 moves away from the outer wall of the bolt at the same time.

[0036] As the liquid storage box 604 moves in the reverse direction, it drives the support rod 807 to move outward synchronously. When the support rod 807 moves outward, the angle between the connecting rod 808 and the support rod 807 gradually decreases, the elastic potential energy of the return spring 806 is released, and the support plate 803 slides upward along the guide frame 802. At the same time, the torsional elastic force of the torsion spring 809 pulls the connecting rod 808 to reset. When the liquid storage box 604 returns to the initial unfolded position, the second servo motor 601 stops running, and the support plate 803 drives the baffle 804 to rise to the highest position, releasing the obstruction to the spraying area.

[0037] The first servo motor 2 is started, and the sprocket 3 continues to rotate in the forward direction, driving the wind turbine bolts that have been sprayed to move to the unloading station. At the same time, the next group of wind turbine bolts to be sprayed enters the spraying station with the support seat 5. The above spraying process is repeated to realize the continuous batch anti-corrosion spraying operation of wind turbine bolts.

[0038] During operation, the operating parameters can be adjusted according to the specifications of the wind turbine bolts and the spraying requirements. The rotation angle of the second servo motor 601 can be adjusted according to the length of the bolts to control the moving distance of the liquid storage box 604 and the insertion depth of the inner spray pipe 705. The output pressure of the delivery pump 701 can be adjusted according to the inner and outer diameters of the bolts to control the paint spraying flow rate. The speed of the third servo motor 707 and the spraying time can be adjusted according to the coating thickness requirements. The descent height of the baffle 804 can be adjusted according to the diameter of the bolts to ensure the blocking effect.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wind turbine bolt anti-corrosion spraying device, comprising a conveyor frame (1), characterized in that: A first servo motor (2) is installed at one end of the conveyor frame (1). A sprocket (3) is fixed at the drive end of the first servo motor (2). A chain (4) is meshed with the outside of the sprocket (3). A support seat (5) is fixed at the top of the chain (4). A transmission mechanism (6) is installed inside the conveyor frame (1). A spraying mechanism (7) is installed at one end of the transmission mechanism (6). A blocking mechanism (8) is installed at one end of the transmission mechanism (6). The transmission mechanism (6) includes a second servo motor (601), a first transmission gear (602), and a support rod (603). The second servo motor (601) is fixed inside the conveyor frame (1), the first transmission gear (602) is fixed to the drive end of the second servo motor (601), and the support rod (603) is slidably connected inside the conveyor frame (1). One end of the support rod (603) is fixed with a liquid storage box (604). The spraying mechanism (7) includes a delivery pump (701), a diversion pipe (702) and a delivery cylinder (703). The delivery pump (701) is fixed at the top of the liquid storage box (604). The output end of the delivery pump (701) is fixed with the diversion pipe (702), and one end of the diversion pipe (702) is fixedly connected to the delivery cylinder (703). The blocking mechanism (8) includes a support frame (801), a guide frame (802) and a support plate (803). The support frame (801) is fixed to the outside of the conveyor frame (1), the guide frame (802) is fixed to one end of the support frame (801), and the support plate (803) is slidably connected to the inside of the guide frame (802).

2. The anti-corrosion spraying device for wind turbine bolts according to claim 1, characterized in that: One end of the liquid storage box (604) is fixed with a rack (605). There are two sets of liquid storage boxes (604). The liquid storage boxes (604) are symmetrically distributed about the central axis of the conveyor frame (1). The first transmission gear (602) and the rack (605) are meshed together.

3. The anti-corrosion spraying device for wind turbine bolts according to claim 1, characterized in that: One end of the conveying cylinder (703) is rotatably connected to a conveying disc (704), one end of the conveying disc (704) is fixed with an inner nozzle (705), one end of the conveying disc (704) is fixed with an outer nozzle (706), one end of the liquid storage box (604) is fixed with a third servo motor (707), and the drive end of the third servo motor (707) is fixed with a second transmission gear (708).

4. The anti-corrosion spraying device for wind turbine bolts according to claim 3, characterized in that: The input end of the delivery pump (701) is located inside the liquid storage box (604). The output end of the delivery pump (701) is connected to the diversion pipe (702). The output end of the diversion pipe (702) is connected to the delivery cylinder (703). The output end of the delivery cylinder (703) is connected to the delivery disc (704). The output end of the delivery disc (704) is connected to the inner nozzle (705). The output end of the delivery disc (704) is connected to the outer nozzle (706).

5. The anti-corrosion spraying device for wind turbine bolts according to claim 3, characterized in that: The conveying cylinder (703) is provided in two sets. The conveying cylinder (703) is symmetrically distributed about the central axis of the liquid storage box (604). Several sets of teeth are fixed on the outside of the conveying disc (704). The second transmission gear (708) and the conveying disc (704) are meshed and connected.

6. The anti-corrosion spraying device for wind turbine bolts according to claim 3, characterized in that: The inner nozzle (705) has several sets of nozzles fixed on its exterior, and the nozzles are arranged in an array. The outer nozzle (706) has two sets, and the outer nozzles (706) are symmetrically distributed about the central axis of the conveyor plate (704).

7. The anti-corrosion spraying device for wind turbine bolts according to claim 1, characterized in that: A baffle (804) is fixed to one end of the support plate (803), an extension plate (805) is fixed to one end of the guide frame (802), a return spring (806) is fixed to the top of the extension plate (805), a support rod (807) is fixed to the top of the liquid storage box (604), a connecting rod (808) is rotatably connected to one end of the support rod (807), one end of the connecting rod (808) is rotatably connected to the support plate (803), and a torsion spring (809) is installed at one end of the support rod (807).

8. The anti-corrosion spraying device for wind turbine bolts according to claim 1, characterized in that: Two sets of support frames (801) are provided, and the support frames (801) are symmetrically distributed about the central axis of the conveyor frame (1). Two sets of guide frames (802) are provided, and the guide frames (802) are symmetrically distributed about the central axis of the support frames (801).

9. The anti-corrosion spraying device for wind turbine bolts according to claim 7, characterized in that: The top end of the return spring (806) is fixedly connected to the support plate (803). The return spring (806) is used to press the support plate (803) and keep it moving upward.

10. The anti-corrosion spraying device for wind turbine bolts according to claim 7, characterized in that: The support link (807) is provided in two sets, and the support link (807) is symmetrically distributed about the central axis of the baffle (804). The torsion spring (809) is used to pull the connecting rod (808).

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