An underwater spraying device for a floating foundation

Abstract

The application discloses an underwater spraying device for a floating foundation, which sequentially comprises a power assembly, a steering assembly, a sliding assembly and a spraying assembly; the steering assembly comprises a rotary support table, a rotary shaft, a hydraulic device, a rotary connecting piece, a rotary connecting rod, a box connecting rod and a box connecting sheet; the rotary support table is connected with the power assembly and the rotary shaft; the rotary shaft is hingedly connected with the hydraulic device and the rotary connecting rod; the hydraulic device is hingedly connected with the box connecting sheet; the rotary connecting rod is hingedly connected with the box connecting rod; and the box connecting rod is fixedly connected with the box connecting sheet. Through the coordinated action of the five steerable propulsion devices, the whole equipment is pushed to freely realize the movement process of advancing, retreating, ascending and descending underwater, to realize the multi-degree-of-freedom movement underwater, to drive the spraying device to complete the coherent spraying work, and to be convenient to use; three boxes are adopted to balance, the compressed gas and the paint are used to complementally fill the ballast water with seawater, and the balance stability is good.

Description

Technical Field

[0001] This invention pertains to spraying devices, specifically an underwater spraying device for floating foundations. Background Technology

[0002] Floating offshore platforms, such as floating wind turbines, drilling platforms, and oil and gas extraction platforms, require painting before commissioning. This ensures the paint coats the outer layer of the platform, reducing oxidation and seawater corrosion of the underwater foundation. Currently, surface painting equipment consists of mobile carts and manual spray guns or drones, consuming significant manpower, resources, and capital. Furthermore, once the platform is launched, seawater corrosion, underwater plant entanglement, and marine life attachment create a negative charge in the circulating water. Upon contact with paint mist coagulants, this charge neutralization causes the paint to lose its stickiness, forming fine paint sludge flocculent particles. This further reduces the paint's adhesiveness, necessitating secondary or multiple painting sessions for maintenance and upkeep.

[0003] However, there is currently limited research and development on key technologies for underwater spraying. Application number 201810896903.0 discloses an underwater spraying device. In this device, accelerating gas and carrier gas are respectively introduced into a heating device through accelerating gas connecting pipes and carrier gas connecting pipes for heating. They are then mixed together in a rectifier and accelerated as they pass through a waterproof spray gun. The high-speed airflow, under the action of a waterproof cover, displaces water from the spraying area. The accelerated particles are deposited onto the workpiece through high-speed impact, thus achieving the preparation of an underwater coating. However, this device is only used in a fixed spraying area, and the entire spraying device requires external dragging, which is quite inconvenient.

[0004] Application No. 201810896889.4 discloses a spraying system and method for underwater maintenance. This method controls the device disclosed in Application No. 201810896903.0, which can effectively solve the long-standing maintenance problems of underwater components. However, the system does not mention the movement of the spray nozzle during the control process, cannot achieve continuous spraying, requires re-draining the water for each spraying, and the spraying device requires external transportation and movement.

[0005] Application No. 201810896902.6 discloses a coaxial laser composite underwater spraying device. Compared with the traditional electric heating spraying device, it innovatively uses laser to heat particles and gases, which is beneficial for underwater coating preparation. This invention can be used for underwater surface repair, surface coating preparation, surface rust removal and repair, local structural connection and other aspects. However, it also has the problem that it cannot spray continuously and the spraying device needs to be dragged by an external device again.

[0006] In general, existing spraying equipment has the problems of requiring external devices to move it, being inconvenient to use, and the spray nozzles being unable to achieve continuous spraying. Summary of the Invention

[0007] Purpose of the invention: In order to overcome the shortcomings of the existing technology, the purpose of this invention is to provide an underwater spraying device for floating foundations that can achieve multi-degree-of-freedom movement and is quick to use.

[0008] Technical Solution: The underwater spraying device for floating foundations described in this invention comprises, in sequence, a power assembly, a steering assembly, a sliding assembly, and a spraying assembly. The steering assembly includes a rotating support platform, a rotating shaft, a hydraulic device, a rotating connector, a rotating connecting rod, a housing connecting rod, and a housing connecting plate. The rotating support platform is connected to the power assembly and the rotating shaft. The rotating shaft is hinged to the hydraulic device and the rotating connecting rod, respectively. The hydraulic device is hinged to the housing connecting plate, and the rotating connecting rod is hinged to the housing connecting rod. The housing connecting rod is fixedly connected to the housing connecting plate using bolts, which facilitates disassembly and maintenance. The steering assembly provides convenience for the free movement and rotation of the spraying assembly.

[0009] Furthermore, the rotating support platform includes a support plate, a controller, a support platform connecting rod, and a rod column. The controller is installed on the support plate, and the support platform connecting rod is connected to the support plate through the rod column. An electric motor is installed inside the rotating shaft, and the electric motor is fixedly connected to the bottom of the support platform. The controller functions as follows: (1) wirelessly connecting to the control terminal of the water surface worker to remotely control the operation of the spraying device; (2) connecting to the electric motor circuit of the power component to control the direction and movement of the power component; (3) connecting to the circuit of the hydraulic device to control the operation of the hydraulic device and control the overall center of gravity and the task of the spraying device; (4) connecting to the circuit of the spraying component to control the output of the paint and the spraying operation; (5) connecting to the circuit of the water pump and the gear and rack motor to control the rotation and operation of the electric motor. Furthermore, the hydraulic device includes a hydraulic cylinder and a hydraulic rod. The hydraulic rod can move along the hydraulic cylinder. The hydraulic cylinder is hinged to the rotating shaft, and the hydraulic rod is hinged to the box connecting rod.

[0010] Furthermore, the power assembly includes a steerable propulsion device and a power support frame. Several steerable propulsion devices are symmetrically arranged circumferentially on the power support frame. The power support frame also houses a paint tank, a battery tank, and a compressed gas tank. When the weight loaded in the paint tank and compressed gas tank decreases, ballast water is used for balancing. The steerable propulsion device includes a power rotating rod, a propeller frame rotating component, a propeller frame, and a propeller. The power rotating rod is rotatably connected to the power support frame. The propeller frame rotating component is driven to rotate by the power rotating rod. The propeller frame is fixedly connected to the propeller frame rotating component, and the propeller is rotatably connected to the propeller frame. An electric motor is placed in the power rotating rod and, through a bearing connection, drives the propeller frame rotating component to rotate, thus realizing the rotation of the propeller frame rotating component.

[0011] Furthermore, the sliding assembly includes a gear placement box, which is fixedly connected to the box body connecting piece. A rectangular hole is opened at the bottom of the gear placement box, through which a sliding motor, a rotating gear, a fixed rack, and a roller slide are installed. The sliding motor is fixedly connected to the gear placement box and connected to the rotating gear via a coupling. The rotating gear meshes with the fixed rack, which is fixedly connected to the rack connector of the spraying assembly. The roller slide is fixedly connected to the edge of the rectangular hole inside the gear placement box. The sliding assembly mainly provides a wider range of motion for the spraying assembly, allowing it to cooperate with the rollers and reducing friction during movement, thereby reducing the power consumption of the motor and achieving energy saving.

[0012] Furthermore, the spraying assembly includes a rack and pinion connector, rollers, a spraying device, a water pump, and a sealed housing. The rollers are evenly spaced on one end of the rack and pinion connector's shaft. The water pump is fixedly connected to the sealed housing. The spraying device is located at the lower part of the rack and pinion connector and the upper part of the sealed housing. The water pump is connected to the power assembly. By spraying the underwater portion of the floating foundation of an offshore platform in service, the corrosion rate of the underwater portion is reduced, extending its service life.

[0013] Furthermore, the spraying device includes a nozzle placement box, a support shaft, two end supports, a first rod, a second rod, a third rod, a connector, a first spring, a second spring, a first driving component, a lead screw, a first gear connector, a second gear connector, a first gear, a second gear, a third gear, a rack sealing plate, a nozzle steel pipe, and a nozzle; the top surface of the nozzle placement box is provided with two end supports; the two end supports are fixedly connected to the support shaft; the second and third rods are connected to the nozzle placement box through the connector, and the second and third rods can rotate relative to the connector; the first rod is respectively connected to the second rod, the second rod, the third rod, and the third rod. The three rods are hinged together; the two ends of the first rod are connected to the nozzle placement box through the first spring and the second spring, respectively; the first driving member is fixedly connected to the first rod; the lead screw passes through the nozzle placement box and is fixedly connected to the first gear connector, and the vertical up and down movement of the first driving member is driven by the mutual rotation of the lead screw and the nozzle placement box; the first gear is provided on the first gear connector, which rotates coaxially and meshes with the second gear; the two ends of the second gear connector are provided with the first gear and the third gear, respectively; the rack sealing plate meshes with the third gear; one end of the nozzle is fixedly connected to the nozzle steel pipe, and the other end is fixedly connected to the first rod.

[0014] Furthermore, the spraying device also includes a heating device, a hot air delivery pipe, a sealing disc, a flared mouth, and heat sinks. The sealing disc is located at the bottom of the nozzle placement box, and the heating device and a rack and pinion sealing plate are installed on the sealing disc. The heating device is connected to the hot air delivery pipe. The flared mouth is connected to the side of the nozzle placement box away from the sliding component. Heat sinks are installed on the edge of the flared mouth.

[0015] Furthermore, the sealed enclosure includes a water-winding roller, a drainage chamber, a spraying chamber, a pumping chamber, and a sealing roller. The spraying chamber has drainage chambers and pumping chambers on both sides. Both the pumping chamber and the drainage chamber are connected to a water pump. The bottom of both ends of the pumping chamber is equipped with a water-winding roller and a sealing roller, respectively.

[0016] How to use:

[0017] (1) Clean the surface of the underwater base part with external cleaning tools to prepare for the adsorption, drainage and spraying of the spraying device.

[0018] (2) Driven by the power component, the device is pushed to the position where the floating base paint falls. By the movement of the steering component, the sliding component and the spraying component are rotated to a suitable angle.

[0019] (3) The spraying component is adsorbed onto the surface of the component to be sprayed through the sealed box of the spraying component. The water is pumped from the water pumping chamber to the drainage chamber through the water pump and discharged.

[0020] (4) After the first adsorption is completed, the water in the spraying chamber is pumped out through the water pumping chamber. The motor drives the first gear and the second gear to rotate, thereby driving the screw and the rack sealing plate to move, so that the nozzle can descend to the spraying position and prepare for spraying.

[0021] (5) Start the heating device to dry the remaining moisture in the spray booth, in order to improve the spraying quality.

[0022] (6) Start the nozzle and spray.

[0023] (7) During the spraying process, the sliding motor works to drive the sliding component to move, thereby driving the spraying component to move, realizing the process of drainage, spraying and drying.

[0024] (8) During the preparation and spraying process, the sliding component and the spraying component move and rotate relative to the power component, thereby realizing mutual movement in space.

[0025] Beneficial effects: Compared with the prior art, the present invention has the following significant features:

[0026] 1. Through the coordinated action of five steerable propulsion devices, the entire equipment can move freely forward, backward, up, and down underwater, realizing multi-degree-of-freedom movement of the whole device underwater, thereby driving the spraying device to complete continuous spraying work, which is convenient to use;

[0027] 2. Three tanks are used for balancing, and compressed gas and coatings are used to complement seawater to fill the ballast water, ensuring the balance and stability of the device;

[0028] 3. By connecting the water pump to the water pumping chamber and the drainage chamber, water is pumped from the water pumping chamber to the drainage chamber for discharge, thus achieving a continuous spraying process, increasing the area that can be sprayed in a short time, and improving work efficiency.

[0029] 4. By operating a sliding motor, the sliding components are moved, which in turn moves the spraying components. This allows for the spraying of a large area in one place, reducing the number of times the device's power components need to move and thus reducing energy loss.

[0030] 5. Through the operation of the steering component, this device allows the spraying component to be adsorbed onto the upward-facing area perpendicular to the ground for spraying without reversing the entire device, thus ensuring the stable operation of the entire device.

[0031] 6. The overall device has simple and lightweight components, is easy to install and quick to use. It can complete the spraying work by connecting to the control unit through an external control.

[0032] 7. When the device is performing the spraying operation, a single motor can move the spraying steel pipe downwards, and at the same time, the rack and pinion sealing plate can be moved away. When the spraying steel pipe moves upwards, the rack and pinion sealing plate closes, completing the process from spraying to sealing at the end of spraying. It is simultaneous and makes spraying more convenient. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of the present invention.

[0034] Figure 2 This is a schematic diagram of the structure of the power component 1 of the present invention.

[0035] Figure 3 This is a schematic diagram of the structure of the coating box 103, battery box 104, and compressed gas box 105 of the present invention.

[0036] Figure 4 This is a cross-sectional view of the compressed gas chamber 105 of the present invention.

[0037] Figure 5 This is a schematic diagram of the structure of the steerable propulsion device 101 of the present invention.

[0038] Figure 6 This is a top view of the steerable propulsion device 101 of the present invention.

[0039] Figure 7 This is a schematic diagram of the structure of the steering component 2 of the present invention.

[0040] Figure 8 This is a schematic diagram of the structure of the rotating support platform 201 of the present invention.

[0041] Figure 9 This is a schematic diagram of the hydraulic device 203 of the present invention.

[0042] Figure 10 This is a schematic diagram of the structure of the sliding component 3 of the present invention.

[0043] Figure 11 This is a schematic diagram of the structure of the spraying component 4 of the present invention.

[0044] Figure 12 This is a schematic diagram of the structure of the spraying device 403 of the present invention.

[0045] Figure 13 This is a schematic diagram of the nozzle placement box 40301 of the present invention.

[0046] Figure 14 This is a schematic diagram of the connection at the first gear 40314 of the present invention.

[0047] Figure 15 This is a schematic diagram of the connection at the rack sealing plate 40317 of the present invention.

[0048] Figure 16 This is a schematic diagram of the structure of the sealed box 405 of the present invention. Detailed Implementation

[0049] like Figure 1 The underwater spraying device for floating foundations includes a power unit 1, a steering unit 2, a sliding unit 3, and a spraying unit 4. The power unit 1 is mounted on the upper part of the steering unit 2, the steering unit 2 is mounted on the upper part of the sliding unit 3, and the sliding unit 3 is mounted on the upper part of the spraying unit.

[0050] like Figures 2-3 The power assembly 1 includes a steerable propulsion device 101, a power support frame 102, a paint tank 103, a battery tank 104, and a compressed gas tank 105. The steerable propulsion device 101 and the power support frame 102 are connected by rotating bearings driven by an electric motor, evenly distributed around the circumference of the power support frame 102 at an angle of 45 degrees. The paint tank 103 is welded to the paint tank support member 1031, and the paint tank support member 1031 is bolted to the power support frame 102. The battery tank 104 is welded to the battery support member 1041, and the battery support member 1041 is bolted to the power support frame 102. The compressed gas tank 105 is welded to the compressed gas tank support member 1051, and the compressed gas tank support member 1051 is bolted to the power support frame 102. The paint tank 103 is filled with spray paint, and the compressed gas tank 105 is filled with compressed gas. The weight of these two tanks will be reduced, and ballast water is used to balance the consumption.

[0051] like Figure 4 The amount of paint sprayed decreases when the spraying device is in operation. Once the spraying device starts working, the paint sprayed and compressed gas will flow out from port B, causing a decrease in pressure in the lower cavity of the partition plate 1052 in the compressed gas box 105. A differential pressure pump is installed at port A. The opening and closing of the pump is controlled by the opening and closing of port B. When port B is open, paint or gas flows through, triggering the pump at port A to work and pump water into the chamber. When port B is closed, paint or gas does not flow, the pump at port A stops working, and water is not injected into the chamber. As the compressed gas and paint sprayed out, the partition plate 1052 gradually moves downward as the upper pump at port A pumps water in. On the one hand, it separates water, gas, and paint. On the other hand, the injected water can form ballast water to form a counterweight, so that the whole device is in a balanced state.

[0052] The three enclosures ensure absolute airtightness. The main function of the battery enclosure 104 is to house the batteries for use by the various motors and power units within the device. The compressed gas enclosure 105 and the paint enclosure 103 will experience a decrease in volume during use, so diaphragms are required. Water is injected into them to balance the volume of paint and compressed gas as the usage decreases.

[0053] like Figures 5-6 The steerable propulsion device 101 includes a power rotating rod 1011, a propeller frame rotating component 1012, a propeller frame 1013, and a propeller 1014. The power rotating rod 1011 is rotatably connected to the power support frame 102 via a motor, bearings, and a shaft. The propeller frame rotating component 1012 and the power rotating rod 1011 are connected and rotated via a motor and bearings. The propeller frame rotating component 1012 is rotatably connected to the power rotating rod 1011, and is driven to rotate via a bearing 1015. The propeller frame 1013 is welded to the propeller frame rotating component 1012. The propeller 1014 is coaxially fixed to the propeller frame 1013.

[0054] The steerable propulsion device 101 is arranged in a 360-degree symmetrical array around the power support frame 102, and the power rotating rod 1011 can rotate around an axis driven by an electric motor. The propeller frame rotating component 1012 can rotate around a fixed axis of the power rotating rod 1011 driven by an electric motor. The fixed axis rotation of the power rotating rod 1011 connected to the power support frame 102 allows the angle between the entire steerable propulsion device 101 and the horizontal plane to change, thereby determining the propulsion direction of the steerable propulsion device 101. The entire steerable propulsion device 101 can rotate the propeller frame 1013 from a vertical direction to a horizontal direction by rotating the propeller frame rotating component 1012 around the fixed axis of the power rotating rod 1011 driven by an electric motor. The forward and reverse rotation of the propeller 1014 can achieve forward and backward movement of the entire device. The four steerable propulsion devices 101 in different directions can coordinate their positions according to the changes in the center of gravity of the overall device, thereby achieving the balance of the overall device.

[0055] like Figure 7The steering assembly 2 includes a rotating support platform 201, a rotating shaft 202, a hydraulic device 203, a rotating connector 204, a rotating connecting rod 205, a housing connecting rod 206, and a housing connecting piece 207. The rotating support platform 201 is bolted to the power support frame 102. The rotating shaft 202 is bolted to the bottom of the support platform 2011, and a motor is installed inside the rotating shaft 202, which is fixed to the bottom of the support platform 2011. The rotating connector 204 is connected to the rotating shaft 202 via a large-diameter bearing. The rotating connecting rod 205 is hinged to the rotating connector 204, allowing it to rotate freely around the connection point. The housing connecting rod 206 is connected to the rotating connecting rod 205 via a shaft and bearing, and a motor is installed inside the rotating connecting rod 205 to drive its rotation. The rotating connecting rod 205 rotates relative to the rotating connector 204 around its hinge axis, creating an angle change with the horizontal plane in the vertical direction, thus causing the rotating connecting rod 205 to drive the lower device to rotate. The housing connecting piece 207 is fixed to the housing connecting rod 206 with bolts. The housing connecting rod 206 rotates around the rotating connecting rod 205 driven by a motor, adjusting the relative angle between the housing connecting rod 206 and the rotating connecting rod 205 so that the housing connecting piece 207 forms a certain angle with the horizontal plane, thereby achieving a suitable spraying angle for the housing connecting piece 207 and the components below it.

[0056] like Figure 8 The rotating support platform 201 includes a support plate, a controller 2012, a support platform connector 2013, and a rod 2014. The controller 2012 is mounted on the support plate, and the support platform connector 2013 is connected to the bottom 2011 of the support platform by the rod 2014. The rotating support platform 201 is supported by the rod 2014 for the purpose of mounting the controller 2012; sealing rubber kits are added at this location.

[0057] like Figure 9 The hydraulic device 203 includes a hydraulic cylinder 2021 and a hydraulic rod 2022. One end of the hydraulic cylinder 2021 is hinged to the rotating shaft 202, and one end of the hydraulic rod 2022 is hinged to the housing connecting rod 206. Driven by electricity, the hydraulic device 203 enables the housing connecting rod 206 and the rotating connecting rod 205 to rotate around a fixed axis of the rotating connecting member.

[0058] like Figure 10The sliding assembly 3 includes a gear housing 301, a sliding motor 302, a rotating gear 303, a fixed rack 304, and a roller slide 305. The gear housing 301 is bolted to the housing connecting piece 207. A rectangular hole is formed at the bottom of the gear housing 301, and the sliding motor 302 is fixed to the bottom of the gear housing 301. The sliding motor 302 and the rotating gear 303 are connected by a coupling. The rotating gear 303 meshes with the fixed rack 304. The fixed rack 304 is connected to the rack connector 401 by screws. The roller slide 305 is welded to the bottom of the gear housing 301 near the edge of the rectangular hole.

[0059] The sliding motor 302 and the rotating gear 303 inside the sliding assembly 3 are fixed. When the sliding motor 302 is working, it drives the rotating gear 303 to rotate, thereby driving the fixed rack 304 to move, so as to drive the rack connector 401 and the parts below to move.

[0060] like Figure 11 The spraying assembly 4 includes a rack connector 401, rollers 402, a spraying device 403, a water pump 404, and a sealed housing 405. The rollers 402 are mounted on a shaft at one end of the rack connector 401 and are arranged in a straight line along the rack connector. The water pump 404 is mounted on the upper part of the sealed housing 405 and secured with bolts. The spraying device 403 is mounted on the lower part of the rack connector 401 and the upper part of the sealed housing 405.

[0061] like Figures 12-15The spraying device 403 includes a nozzle placement box 40301, which is composed of five steel plates with sealing rubber gaskets at the joints. A support shaft 40302 is bolted to a rack and pinion connector 401. Two end supports 40303 are welded to the support shaft 40302, primarily for fixing the nozzle placement box 40301. A connector 40307 connects the second rod 40305 and the third rod 40306 to the nozzle placement box 40301 using a rotating mechanism. The second rod 40305 and the third rod 40306 can rotate relative to the connector 40307, ​​allowing the nozzle tube 40318 to reciprocate up and down under the buffering action of the first spring 40308 and the second spring 40309, based on the movement of the first driving member 40310; thereby realizing the up and down movement of the nozzle 40319. The first rod 40304 is hinged to the second rod 40305 and the third rod 40306, allowing it to rotate relative to them. The first spring 40308 and the second spring 40309 connect both ends of the first rod 40304 to the nozzle housing 40301. The first drive member 40310 is welded to one end of the first rod 40304. One end of the first drive member 40310 has a bearing hole for connecting the lead screw 40311. The lead screw 40311 passes through the threaded hole in the nozzle housing 40301 and is welded to the first gear connector 40312. The first driving component 40310 is connected to the lead screw 40311 through the bearing hole 40325. The lead screw nut 40326 is located between the lead screw 40311 and the first gear connector 40312. The vertical up-and-down movement of the first driving component 40310 is driven by the mutual rotation of the lead screw nut 40326 and the nozzle housing 40301 of the lead screw 40311. The first gear 40314 and the third gear 40316 are coaxially mounted with a certain distance between them. The second gear 40315 is keyed to the second gear connector 40313. The other end of the third gear 40316 is keyed to the second gear connector 40313. The first gear 40314 and the second gear 40315 mesh simultaneously with the gears driven by the motor, and rotate in the same direction. The first gear 40314 is mounted on the first gear connector 40312. The first gear 40314 meshes with the second gear 40315, and the second gear 40315 is connected to the motor 403151. The rack of the rack sealing plate 40317 meshes with the third gear 40316. The third gear 40316 is mounted on the second gear connector 40313.The rotation of the motor 403151 drives the second gear 40315 to rotate, which in turn drives the first gear 40314 to rotate. The first gear connector 40312 and the second gear connector 40313 also rotate, and the rack sealing plate 40317 moves accordingly. The nozzle 40319 is welded to the nozzle steel pipe 40318, the other end of which is fixedly connected to the first rod 40304 and connected to the paint box 103 via a flexible hose. The sealing disc 40322 is installed at the bottom of the nozzle placement box 40301, and a heating device 40320 and the rack sealing plate 40317 are mounted on the sealing disc 40322. The heating device 40320 is connected to the hot air delivery pipe 40321. The middle part of the nozzle 40319 is used for spraying, and the peripheral part is used for heating. The lower part of the nozzle placement box 40301 is connected to the flared mouth 40323. A heat sink 40324 is connected to the flared end of the flared end 40323. When the lead screw 40311 moves downward, the rack and pinion sealing plate 40317 moves away from the axis of the sealing disc 40322 under the drive of the third gear. The main function of the heating device 40320 is to remove any remaining water after the water in the spray chamber 4053 of the sealed box 405 has been drained, and to heat the paint after spraying to solidify it. The function of the heat sink 40324 is to dissipate the remaining heat after the paint dries, preventing seawater from entering and causing the high-temperature paint to peel off when it comes into contact with cold water. The function of the flared end 40323 is to ensure uniform spraying throughout the entire spraying process.

[0062] like Figure 16 The sealed chamber 405 includes a water-winding roller 4051, a drainage chamber 4052, a spraying chamber 4053, a water-drawing chamber 4054, and a sealing roller 4055. The drainage chamber 4052 and the water-drawing chamber 4054 are installed on both sides of the spraying chamber 4053. A water pump 404 is installed on the upper part of the water-drawing chamber 4054, and the pumping end of the pump 404 is connected to both the water-drawing chamber 4054 and the drainage chamber 4052, drawing water from the water-drawing chamber 4054 to the drainage chamber 4052 via the pump 404. The water-winding roller 4051 is installed at one end of the drainage chamber 4052, and the sealing roller 4055 is installed at one end of the water-drawing chamber 4054, drawing water from the water-drawing chamber 4054 to the drainage chamber 4052 for discharge.

[0063] The compressed gas chamber 105 is connected to the drainage chamber 4052 via an exhaust pipe, and the paint chamber 103 is connected to the nozzle steel pipe 40318 via a paint delivery pipe. The power supply battery is connected to each motor and electrical device via cables, and waterproof rubber sheets are added to the outside of the cables and the devices using the cables. The electrical devices include a spraying device 403, a heating device 40320, and a hydraulic device 203. The entire equipment is controlled by cables, which are connected to a controller 2012 to control the electrical devices and the movement of the equipment. A camera is installed on the equipment to observe the spraying process and the movement of the equipment. Adsorption rollers are installed at the bottom of the sealed chamber 405, ensuring the seal and airtightness of the chamber 405 as it rolls.

[0064] The method of using the underwater spraying device for floating foundations in this embodiment includes the following steps:

[0065] S1. Clean the surface of the underwater base using external cleaning tools to prepare for the adsorption, drainage, and spraying of the spraying device.

[0066] S3. Driven by the power component 1, the device is pushed to the position where the floating base paint falls. By the movement of the steering component 2, the sliding component 3 and the spraying component 4 are rotated to a suitable angle.

[0067] S3. The spraying component 4 is attached to the surface of the component to be sprayed by the sealed box 405. The water is pumped from the water pump 4054 to the drainage tank 4052 by the water pump 404 and then discharged.

[0068] S4. After the initial adsorption is completed, the water in the spraying chamber 4053 is pumped out through the water pumping chamber 4054. The motor drives the first gear 40314 and the second gear 40315 to rotate, thereby driving the lead screw 40311 and the rack and pinion sealing plate 40317 to move, so that the nozzle 40319 descends to the spraying position and is ready for spraying.

[0069] S5. Start the heating device 40320 to dry the remaining moisture in the spraying chamber 4053, preparing for improved spraying quality.

[0070] S6. Start nozzle 40319 to begin spraying.

[0071] S7. During the spraying process, the sliding motor 302 works to drive the sliding component 3 to move, thereby driving the spraying component 4 to move, realizing the process of drainage, spraying, and drying.

[0072] S8. During the pre-spraying and spraying processes, the sliding component 3 and the spraying component 4 are moved and rotated relative to the power component 1, thereby achieving mutual movement in space.

Claims

1. An underwater spraying device for floating foundations, characterized in that: The assembly comprises, in sequence, a power unit (1), a steering unit (2), a sliding unit (3), and a spraying unit (4). The power unit (1) is mounted on the upper part of the steering unit (2), the steering unit (2) is mounted on the upper part of the sliding unit (3), and the sliding unit (3) is mounted on the upper part of the spraying unit (4). The steering unit (2) includes a rotating support platform (201), a rotating shaft (202), a hydraulic device (203), a rotating connector (204), a rotating connecting rod (205), and a housing. The rotating support platform (201) is connected to the power assembly (1) and the rotating shaft (202). The rotating shaft (202) is hinged to the hydraulic device (203) and the rotating connecting rod (205). The hydraulic device (203) is hinged to the box connecting plate (207). The rotating connecting rod (205) is hinged to the box connecting rod (206). The box connecting rod (206) is fixedly connected to the box connecting plate (207). The sliding assembly (3) includes a gear placement box (301), which is fixedly connected to a box body connecting piece (207). A rectangular hole is opened at the bottom of the gear placement box (301), through which a sliding motor (302), a rotating gear (303), a fixed rack (304), and a roller slide (305) are arranged. The sliding motor (302) is fixedly connected to the gear placement box (301), and the sliding motor (302) is connected to the rotating gear (303) through a coupling. The rotating gear (303) meshes with the fixed rack (304), and the fixed rack (304) is connected to the spraying assembly (4). The rack connector (401) is fixedly connected, and the roller slide (305) is fixedly connected to the edge of the rectangular hole inside the gear box (301); the spraying assembly (4) includes the rack connector (401), roller (402), spraying device (403), water pump (404), and sealed box (405). The roller (402) is evenly spaced on one end shaft of the rack connector (401). The water pump (404) is fixedly connected to the sealed box (405). The spraying device (403) is located at the lower part of the rack connector (401) and the upper part of the sealed box (405). The water pump (404) is connected to the power assembly (1). The spraying device (403) includes a nozzle placement box (40301), a rack and pinion sealing plate (40317), a nozzle steel pipe (40318), a nozzle (40319), a heating device (40320), a hot air conveying pipe (40321), a sealing disc (40322), a bell mouth (40323), and a heat sink (40324). The sealing disc (40322) is located at the bottom of the nozzle placement box (40301), and the heating device (40320) and the rack and pinion sealing plate (40317) are mounted on the sealing disc (40322). The device (40320) is connected to the hot gas delivery pipe (40321); the nozzle placement box (40301) is connected to the flared mouth (40323) on the side away from the sliding component (3); the edge of the flared mouth (40323) is provided with heat sink (40324); the nozzle (40319) and the nozzle steel pipe (40318) are connected and can move up and down, the middle part of the nozzle (40319) is used for spraying, and the peripheral part is used for heating. When the nozzle (40319) moves, the rack sealing plate (40317) will move away from the axis of the sealing disc (40322); The sealed box (405) includes a water-repellent roller (4051), a drainage chamber (4052), a spraying chamber (4053), a pumping chamber (4054), and a sealing roller (4055). The spraying chamber (4053) is provided with a drainage chamber (4052) and a pumping chamber (4054) on both sides. The pumping chamber (4054) and the drainage chamber (4052) are both connected to a water pump (404). The water-repellent roller (4051) is installed at one end of the drainage chamber (4052), and the sealing roller (4055) is installed at one end of the pumping chamber (4054). An adsorption roller is installed at the bottom of the sealed box (405).

2. The underwater spraying device for floating foundations according to claim 1, characterized in that: The rotating support platform (201) includes a support plate, a controller (2012), a support platform connecting rod (2013), and a rod column (2014). The controller (2012) is installed on the support plate, and the support platform connecting rod (2013) is connected to the support plate through the rod column (2014). The rotating shaft (202) is equipped with a motor, and the motor is fixedly connected to the bottom (2011) of the support platform.

3. The underwater spraying device for floating foundations according to claim 1, characterized in that: The hydraulic device (203) includes a hydraulic cylinder (2021) and a hydraulic rod (2022). The hydraulic rod (2022) is capable of telescopic movement along the hydraulic cylinder (2021). The hydraulic cylinder (2021) is hinged to the rotating shaft (202), and the hydraulic rod (2022) is hinged to the housing connecting rod (206).

4. The underwater spraying device for floating foundations according to claim 1, characterized in that: The power assembly (1) includes a steerable propulsion device (101) and a power support frame (102). Several steerable propulsion devices (101) are symmetrically arranged on the power support frame (102) and evenly distributed in the circumference. The power support frame (102) is also provided with a paint tank (103), a battery tank (104), and a compressed gas tank (105). When the load weight in the paint tank (103) and the compressed gas tank (105) decreases, ballast water is used for balance.

5. The underwater spraying device for floating foundations according to claim 4, characterized in that: The steerable propulsion device (101) includes a power rotating rod (1011), a propeller frame rotating component (1012), a propeller frame (1013), and a propeller (1014). The power rotating rod (1011) is rotatably hinged to the power support frame (102). The propeller frame rotating component (1012) is driven to rotate by the power rotating rod (1011). The propeller frame (1013) is fixedly connected to the propeller frame rotating component (1012). The propeller (1014) is rotatably connected to the propeller frame (1013).

6. The underwater spraying device for floating foundations according to claim 1, characterized in that: The spraying device (403) further includes a support shaft (40302), two end supports (40303), a first rod (40304), a second rod (40305), a third rod (40306), a connector (40307), a first spring (40308), a second spring (40309), a first drive component (40310), a lead screw (40311), a first gear connector (40312), a second gear connector (40313), a first gear (40314), a second gear (40315), and a third gear (40316). The nozzle placement box (40301) has two end supports (40303) on its top surface; the two end supports (40303) are fixedly connected to the support shaft (40302), and the support shaft (40302) is connected to the rack connector (401); the second rod (40305) and the third rod (40306) are connected to the nozzle placement box (40301) through the connector (40307), and the second rod (40305) and the third rod (40306) can rotate relative to the connector (40307); the first rod (40304) is respectively connected to the second... The first rod (40305) and the third rod (40306) are hinged together; the two ends of the first rod (40304) are connected to the nozzle placement box (40301) by the first spring (40308) and the second spring (40309) respectively; the first driving member (40310) is fixedly connected to the first rod (40304); the lead screw (40311) passes through the nozzle placement box (40301) and is fixedly connected to the first gear connector (40312), and the first driving member (40305) is driven by the mutual rotation of the lead screw (40305) and the nozzle placement box (40306). 10) Vertical up and down movement; the first gear connector (40312) is provided with a first gear (40314) that rotates coaxially, and the first gear (40314) meshes with the second gear (40315); the two ends of the second gear connector (40313) are respectively provided with the first gear (40314) and the third gear (40316); the rack sealing plate (40317) meshes with the third gear (40316); one end of the nozzle steel pipe (40318) is fixedly connected to the nozzle (40319), and the other end is fixedly connected to the first rod (40304).

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