Ship shell outer surface machining device

Abstract

The invention relates to the technical field of ship shell machining, and particularly discloses a ship shell outer surface machining device which comprises two bases which are the same in structure and symmetrically distributed, a supporting plate is hinged between the two bases jointly, a spray head facing the direction away from the supporting plate is installed on the surface of the supporting plate, and a pressurizer connected with the spray head is arranged on the surface of the supporting plate; an opening is formed in the top end face of each base in a penetrating mode, the bottom of each opening communicates with a rectangular mounting groove, a plurality of springs are evenly fixed to the bottom of each rectangular mounting groove, a screening plate is fixed to the other ends of the springs jointly, and a plurality of rows of through holes are formed in the screening plate in an array mode. The number of the rows of through holes is gradually increased in the direction away from the supporting plate; mounting shells are fixed to the upper portions of the two bases in a sealed mode, a storage cavity is fixed in one of the mounting shells, and the ship hull surface machining device is used for solving the problems that during sand blasting of an existing ship hull surface machining device, gravel can pollute the environment, and the sand blasting efficiency is low.

Description

Technical Field

[0001] This invention relates to the field of ship hull processing technology, and in particular to a device for processing the outer surface of a ship hull. Background Technology

[0002] During long-term voyages, the outer surface of a ship's hull is corroded by various factors, including seawater, marine organisms, and atmospheric conditions, leading to rust and paint peeling. This rust and peeling paint not only affect the ship's appearance but, more importantly, reduce the hull's corrosion resistance, accelerate hull corrosion, shorten the ship's lifespan, increase maintenance costs, and may even compromise navigational safety.

[0003] Traditional methods for treating ship hull surfaces primarily rely on manual grinding and sandblasting. Manual grinding is inefficient, labor-intensive, and struggles to guarantee uniformity and consistency in quality. While ordinary sandblasting equipment improves efficiency to some extent, it suffers from several problems. For instance, when the hull surface is curved, the nozzle can easily impact the surface, damaging the equipment or affecting the treatment effect. Sandblasting waste is difficult to recover, hindering recycling and leading to resource waste and increased costs. Furthermore, there is a lack of effective detection and treatment methods for varying degrees of deformation and corrosion on the hull surface, making it impossible to promptly identify and address issues such as dents, bumps, and severe rust.

[0004] In addition, existing hull processing equipment is inadequate in terms of movement and fixation, making it difficult to adapt to the complex shape and curved surface of the hull. During the processing, the equipment is prone to slippage or failure to fit tightly against the hull surface, affecting the processing effect and operational safety.

[0005] Therefore, a ship hull outer surface processing device is proposed to solve the problems of environmental pollution and low sandblasting efficiency caused by sand and gravel during sandblasting in existing ship hull surface processing devices. Summary of the Invention

[0006] The purpose of this invention is to solve the problems of environmental pollution and low sandblasting efficiency caused by sand and gravel during sandblasting in existing ship hull surface processing devices.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A hull outer surface processing device includes two identical and symmetrically distributed bases, with a support plate hinged between the two bases. A nozzle facing away from the support plate is mounted on the surface of the support plate, and a pressure device connected to the nozzle is provided. Each base has an opening at its top surface, and the bottom of the opening is connected to a rectangular mounting groove. Several springs are evenly fixed to the bottom of the rectangular mounting groove, and a screening plate is fixed to the other end of the springs. Several rows of through holes are arrayed on the screening plate, and the mesh size of the through holes gradually increases along the direction away from the support plate. Both bases are sealed and fixed with mounting shells. One of the mounting shells has a storage chamber fixed inside. The top of the storage chamber has a feed inlet that penetrates the outer wall of the mounting shell, and the bottom has a discharge outlet that is connected to the input end of the pressure device. Each of the mounting housings is provided with a pressure regulating device, a blowing device, and a collecting device. The pressure regulating device is fixedly connected to the top of the mounting housing. The blowing device and the collecting device are arranged opposite to each other and are both fixed to the side wall of the mounting housing. The collecting device is connected to a collecting pipe for connecting to a fine sand collecting box. Above the screening plate are fixed a blowing device 2 and a collecting device 2 arranged opposite to each other. Both the blowing device 2 and the collecting device 2 are in contact with and slidably connected to the inner wall of the opening. The collecting device 2 is connected to a collecting pipe 2. The end of the collecting pipe 2 away from the collecting device 2 is connected to the storage chamber. Both bases have rotating blocks hinged to their side walls, and a magnetic wheel is mounted on the side of the rotating block away from the base via a wheel frame.

[0008] Preferably, each of the bases has two cylinders fixed at its bottom, symmetrical about the central axis of the base. Both cylinders are located within the projection coverage area of ​​the opening and the support plate. One of the cylinders has a vacuum suction cup fixed to its output end via a buffer spring seat. The vacuum suction cup is connected to the vacuum pump built into the base via an air pipe. The other cylinder has a hammering stake detachably connected to its output end.

[0009] Preferably, the second blowing device and the second collecting device are arranged in parallel with the first blowing device and the first collecting device, and all four are located on the flow path of the sandblasting on the screening plate.

[0010] Preferably, a force sensor is attached to the surface of the magnetic wheel, a miniature drive motor is provided at the axle of the magnetic wheel, and the output end of the miniature drive motor is fixedly connected to the rotating block; An annular mounting groove is provided on the side wall of each of the two magnetic wheels on any of the bases. Several arc-shaped sealing plates are evenly distributed between the inner walls of the two sides of the annular mounting groove. One end of the sealing plate is hinged to the side wall of the annular mounting groove near the wheel axle through a miniature hinge. A rotation drive is provided at the hinge point between the sealing plate and the annular mounting groove. A mounting base is fixed to the inner wall of the sealing sheet near the opening of the annular mounting groove. A grinding roller is rotatably connected to the mounting base via a bearing. The axis of the grinding roller is parallel to the axis of the magnetic wheel, and the outer circumferential surface of the grinding roller is flush with the outer surface of the sealing sheet.

[0011] Preferably, an annular collection chamber is provided on the side of the annular mounting groove away from the hinge end of the sealing sheet, and a collection hole is provided at the bottom of the collection chamber through the magnetic wheel body, and a threaded sealing plug with a silicone sealing ring is provided in the collection hole.

[0012] Preferably, the mating surface of the sealing sheet and the annular mounting groove is provided with a magnetic strip.

[0013] Preferably, each of the rotating blocks is provided with an angle locking knob at the hinge joint with the base, and a distance sensor is provided on the side wall of the base.

[0014] Preferably, the end of the hammer pile is provided with a replaceable wear-resistant steel head, which can be either flat or pointed, and the middle section of the hammer pile is fitted with a shock-absorbing rubber sleeve.

[0015] Preferably, the base is surrounded by a brush mounting plate along the outer edge of the two openings. The thickness and height of the brush mounting plate are slightly lower than the height of the tire support. It is fixed to the outer peripheral wall of the base by bolts. The brush mounting plate and the peripheral wall of the base are fixed to form a closed-loop sealing frame.

[0016] Preferably, the brush mounting plate has a ventilation opening, and a vacuum cleaner is fixed at the ventilation opening. The vacuum cleaner's inlet faces the inside of the area enclosed by the brush mounting plate, and its outlet communicates with the inside of the mounting shell through a pipe.

[0017] The beneficial effects of this invention are as follows: The device is equipped with a complete sand and gravel recycling system. After use, the sand and gravel are screened using a screening plate, allowing for the classification and recycling of sand and gravel of different particle sizes. Coarse sand returns to the storage chamber through a specific channel for reuse, while fine sand is collected in a fine sand collection box. This effectively improves the utilization rate of the sand and gravel, reduces processing costs, and minimizes the environmental impact of sand and gravel emissions.

[0018] The sealing frame, composed of a brush mounting plate and flexible brushes, fits tightly against the hull surface, forming a closed-loop seal that effectively prevents sand and dust leakage, protecting the surrounding environment. Simultaneously, the vacuum cleaner promptly removes dust from the sealed area, further improving the working environment and ensuring the health of operators. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 This is a schematic diagram of the internal structure of the mounting shell according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the bottom structure of an embodiment of the present invention; Figure 4 This is a cross-sectional view of the overall structure of an embodiment of the present invention; Figure 5This is a schematic diagram of the structure of the magnetic wheel according to an embodiment of the present invention; Figure 6 This is a longitudinal sectional view of the overall structure of an embodiment of the present invention; Figure 7 This is an embodiment of the present invention. Figure 6 A magnified diagram of region A.

[0020] In the diagram: 1. Base; 101. Support plate; 102. Nozzle; 103. Pressure booster; 104. Opening; 105. Rectangular mounting slot; 106. Spring; 107. Screening plate; 1071. Through hole; 108. Second air blowing device; 109. Second collection device; 1091. Second collection pipe; 110. Processor; 2. Mounting housing; 201. Pressure regulating device; 202. Blowing device one; 203. Collection device one; 2031. Collection pipe one; 204. Tie stake; 3. Storage chamber; 301. Inlet; 302. Outlet; 4. Rotating block; 401. Magnetic wheel; 402. Miniature drive motor; 403. Angle locking knob; 404. Distance sensor; 405. Annular mounting groove; 406. Sealing plate; 407. Mounting base; 408. Grinding roller; 409. Collection chamber; 410. Collection hole; 411. Sealing plug; 412. Rotation drive; 413. Magnetic strip; 5. Cylinder; 501. Suction cup; 502. Hammering stake; 6. Brush mounting plate; 601. Brush; 602. Ventilation vent; 603. Vacuum cleaner. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0022] Reference Figures 1-7 A ship hull outer surface processing device includes two bases 1, with a support plate 101 hinged between the two bases 1. The surface of the support plate 101 has a through-hole for mounting grooves. A nozzle 102 is installed inside the mounting groove of the support plate 101. The output end of the nozzle 102 faces the opposite direction to the support plate 101. A pressure device 103 is fixed above the support plate 101. The pressure device 103 is used to apply pressure to the sandblasting and spray it out from the nozzle 102.

[0023] When it is necessary to treat rust and paint on the hull surface, the nozzle 102 will sandblast the rust and paint, causing them to collide and peel off. When the hull surface has a certain curvature, the nozzle 102 will impact the hull surface. At this time, the distance between the nozzle 102 and the hull surface is changed by altering the angle between the base 1 and the support plate 101 at their junction.

[0024] The two bases 1 have the same structure and are symmetrically distributed. The top surface of the base 1 has an opening 104 for recycling the sandblasted material after use. The bottom of the opening 104 is connected to a rectangular mounting groove 105. Several springs 106 are evenly distributed and fixed at the bottom of the rectangular mounting groove 105. The other end of the several springs 106 is fixed to a screening plate 107. Several rows of through holes 1071 are arrayed on the screening plate 107. The mesh number of the several rows of through holes 1071 gradually increases along the direction away from the support plate 101.

[0025] During the processing of the ship hull surface, the sand and gravel sprayed from the nozzle 102 are reflected in all directions after impacting the ship hull. As the sand and gravel impact the ship hull itself, they will break and produce sand and gravel particles of different sizes. Some of the sand and gravel particles enter the other end of the base 1 through the through hole 1071 of the screening plate 107, while the other part of the sand and gravel particles impact the surface of the screening plate 107, causing the screening plate 107 to vibrate.

[0026] Both bases 1 are sealed and fixed with mounting shells 2. One of the mounting shells 2 has a storage chamber 3 fixed inside. The storage chamber 3 is used to store sand and gravel. The top of the storage chamber 3 is provided with a feed inlet 301 and the bottom is provided with a discharge outlet 302. The feed inlet 301 penetrates the outer wall of the mounting shell 2 and is connected to an automatic feeder. The discharge outlet 302 is connected to the input end of the pressure booster 103 through a sand feeding pipe to realize the pressurized conveying and spraying circulation of sand and gravel.

[0027] Both mounting shells 2 are equipped with a pressure regulating device 201, a blowing device 202, and a collecting device 203. The pressure regulating device 201 is fixedly connected to the top of the mounting shell 2 and includes a pressure sensor and an electric regulating valve. It is used to adjust the internal pressure between the mounting shell 2 and the base 1 in real time, maintain a slightly negative pressure environment, and prevent sand and gravel particles in the mounting shell 2 from flowing back to the bottom of the base 1 through the through hole 1071.

[0028] The blowing device 202 and the collecting device 203 are arranged opposite to each other and are fixed to the side wall of the mounting shell 2. The blowing device 202 includes a high-speed fan and a flat air outlet, and the collecting device 203 includes a horn-shaped collecting cover. The two work together to blow fine sand and gravel on the blowing path into the collecting device 203. The collecting device 203 is connected to a collecting pipe 2031. One end of the collecting pipe 2031 is connected to the collecting device 203, and the other end is connected to a fine sand collecting box for collecting fine sand.

[0029] Above the screening plate 107, there are two air blowing devices 108 and two collection devices 109 arranged opposite to each other. Both the air blowing device 108 and the collection device 109 are attached to the inner wall of the opening 104 and are slidably adjusted by a slide rail. The collection device 109 includes a collection pipe 1091. One end of the collection pipe 1091 is connected to the collection cover of the collection device 109, and the other end is connected to the storage chamber 3 through a sand return pump to form a coarse sand recycling circulation channel.

[0030] In a preferred embodiment, the second blowing device 108, the second collecting device 109, the first blowing device 202, and the first collecting device 203 are arranged in parallel, and all four are located on the flow path of the sandblasting on the screening plate 107, forming a two-stage sorting system.

[0031] During the oscillation of the screening plate 107, it impacts the sand and gravel inside the mounting shell 2, giving the sand and gravel an initial velocity, causing them to move in the opposite direction to the screening plate 107. The coarse sand inside the mounting shell 2 moves towards the collection device 109 under the action of gravity and the air force blown by the second blowing device 108 and enters the collection device 109, and further enters the storage chamber 3 for reuse.

[0032] Due to its small mass, the fine sand is suspended in a dust-like state within the mounting housing 2 due to air resistance. Under the influence of the airflow from the second blower 108 and the first blower 202, it moves towards the second collection device 109 and the first collection device 203. Since the collection range of the first collection device 203 is much larger than that of the second collection device 109, most of the fine sand enters the first collection device 203 and is collected by the fine sand collection box.

[0033] A vibration sensor is installed on the screening plate 107 to detect the vibration amplitude of the screening plate 107. When there is obvious deformation (dimpling or protrusion) on the hull surface, the angle between the direction of the sand and gravel hitting the hull and the hull surface changes, the rebound angle changes accordingly, the number of sand and gravel hitting the screening plate 107 changes, and the vibration amplitude of the screening plate 107 also changes accordingly. The vibration amplitude of the screening plate 107 reflects whether there is obvious deformation on the hull surface.

[0034] Each of the two bases 1 has a rotating block 4 hinged to the middle of its sidewalls via a damping hinge. The rotating block 4 can rotate and be positioned within a range of 0-90° around the hinge axis. A magnetic wheel 401 is mounted on the side of the rotating block 4 away from the base 1 via a wheel frame. The magnetic wheel 401 uses a high-strength neodymium iron boron magnetic core covered with a wear-resistant rubber surface, which can generate a strong adsorption force to stably adhere to the outer surface of the hull while avoiding scratching the hull. A force sensor is also attached to the surface of the magnetic wheel 401 to detect the magnetic force between the magnetic wheel 401 and the hull surface.

[0035] When there is severe rust on the hull surface, sandblasting may not be able to completely remove it. Since severe rust will affect the magnetic force between the magnetic wheel 401 and the hull, the force sensor is used to reflect the change in magnetic force, thereby reflecting the rust condition of the hull.

[0036] Annular mounting grooves 405 are formed on the side walls of the two magnetic wheels 401 on any of the bases 1. The annular mounting grooves 405 are coaxially formed with the magnetic wheels 401. Several arc-shaped sealing plates 406 are evenly distributed between the inner walls of the two sides of the annular mounting grooves 405. The sealing plates 406 are made of spring steel and covered with a wear-resistant rubber layer. One end of the sealing plate 406 is hinged to the side wall of the annular mounting groove 405 near the wheel axle through a miniature hinge. A rotary drive 412 is installed on the part of the sealing plate 406 that is hinged to the annular mounting groove 405. The rotary drive 412 drives the sealing plate 406 to open and close within the annular mounting groove 405.

[0037] In its natural state, it fits tightly against the inner wall of the other side of the annular mounting groove 405 through its own elasticity, and together they seal the annular mounting groove 405 to form a closed cavity.

[0038] The sealing sheet 406 is fixed with a mounting base 407 on the inner wall of the side near the opening of the annular mounting groove 405. A grinding roller 408 is rotatably connected to the mounting base 407 via a bearing. The surface of the grinding roller 408 is embedded with diamond abrasive grains. Its axis is parallel to the axis of the magnetic wheel 401, and the outer circumferential surface of the grinding roller 408 is flush with the outer surface of the sealing sheet 406.

[0039] When the force sensor detects that the adsorption force is lower than the set threshold A, the built-in rotary drive 412 will cause the sealing plate 406 to rotate around the hinge axis until the grinding roller 408 protrudes from the wheel surface and contacts the hull surface. As the magnetic wheel 401 rotates, it can grind and clean the rust or attachments on the hull surface.

[0040] The annular mounting groove 405 has an annular collection chamber 409 on the side away from the hinge end of the sealing plate 406, which can guide the impurities generated during grinding into the collection chamber 409 through centrifugal force.

[0041] The bottom of the collection chamber 409 has a collection hole 410 through the magnetic wheel 401. The collection hole 410 is equipped with a threaded sealing plug 411 with a silicone sealing ring. When cleaning is required, the sealing plug 411 can be unscrewed to allow the impurities to be discharged under gravity.

[0042] A processor 110 is also fixed on the base 1. The processor 110 has a control system running inside it. The control system is used to control the other components on the processing device.

[0043] The mating surface of the sealing sheet 406 and the annular mounting groove 405 is also provided with a magnetic strip 413, which enhances the sealing effect through magnetic adsorption in the natural state; the bearing seat of the grinding roller 408 is integrated with a speed sensor, which can monitor the grinding status in real time and feed back to the control system. When jamming is detected, the magnetic wheel 401 is automatically stopped and the sealing sheet 406 is reset.

[0044] The magnetic wheel 401 is equipped with a micro drive motor 402 at its axle. The motor output is fixedly connected to the rotating block 4, which can drive the device to move autonomously along the surface of the hull.

[0045] Because the hull has an arc-shaped surface or tilt angle, while the magnetic wheel 401 is adsorbing the hull, the rotating block 4 can adaptively adjust the swing angle through the damping hinge, so that the base 1 can rotate relative to the hinge axis of the support plate 101. The movement of the magnetic wheel 401 is combined with the movement of the magnetic wheel 401 to realize the flexible adjustment of the device position.

[0046] Each rotating block 4 is equipped with an angle locking knob 403 at the hinge point between itself and the base 1. After the device is adjusted to a suitable working position, the knob can be tightened to fix the angle of the rotating block 4. The side wall of the base 1 is also equipped with a distance sensor 404 to monitor the distance between the device and the hull surface in real time, ensuring that the sandblasting operation always maintains the optimal distance.

[0047] Two cylinders 5 are fixed to the bottom of each base 1. The two cylinders 5 are symmetrically distributed about the central axis of the base 1 and are both located within the projection coverage area of ​​the opening 104 and the support plate 101.

[0048] Wherein: the output end of the cylinder 5 is fixed with a vacuum suction cup 501 through a buffer spring seat, the edge of the suction cup 501 is embedded with an elastic sealing lip, and its connection end is connected to the vacuum pump built into the base 1 through an air pipe. When the vibration amplitude on the screening plate 107 changes significantly, it indicates that there are depressions and bulges on the surface of the hull. At this time, the vibration sensor sends a signal to the staff, who then determine whether there are depressions or bulges on the surface of the hull.

[0049] When a dent occurs on the surface of the hull, cylinder 5 drives suction cup 501 to fit into the dent. Vacuum pump draws a vacuum to generate negative pressure. Combined with the slow pull-back action of cylinder 5, slight dents can be adsorbed and corrected to restore the smoothness of the hull surface.

[0050] Another cylinder 5 is detachably connected to a striking pile 502 at its output end. The striking pile 502 has a replaceable wear-resistant steel head at its end. The wear-resistant steel head can be either flat or pointed, and a shock-absorbing rubber sleeve is fitted in the middle section of the pile. When a protrusion occurs on the surface of the hull, the cylinder 5 can drive the hammering pile 502 to perform high-frequency, low-amplitude impacts on the protruding deformation or rust lumps on the hull surface. This can both break the rust layer and correct the small protrusions, avoiding damage to the substrate.

[0051] Both cylinders 5 are equipped with displacement sensors and pressure regulating valves, enabling adaptive processing of hulls of different thicknesses through the control system. The base 1 is also equipped with an infrared contour scanner at its bottom, which can detect the unevenness and defects on the hull surface in advance and generate three-dimensional coordinates, automatically matching the operating mode and parameters of the suction cup 501 or the hammering pile 502.

[0052] In a preferred embodiment, a brush mounting plate 6 is provided around the outer edge of the two openings 104 along the base 1. The brush mounting plate 6 has a thickness and height slightly lower than the tire support height and is fixed to the outer peripheral wall of the base 1 by bolts. The brush mounting plate 6 and the peripheral wall of the base 1 are fixed to form a closed-loop sealing frame.

[0053] The inner sidewall of the brush mounting plate 6 is evenly distributed with several sets of elastic brushes 601 along the circumference direction. Each set of brushes 601 is made of wear-resistant nylon bristles. The base of the brushes 601 is fastened to the brush mounting plate 6 by stainless steel pressure strips, and the bristles of adjacent sets of brushes 601 are arranged in an alternating pattern to ensure that there are no gaps on the sealing surface.

[0054] When the device is in operation, the brush mounting plate 6 can adapt to the angle adjustment of the base 1, causing the brush 601 to closely contact the hull surface; in conjunction with the rotation of the support plate 101, the flexible hinge of the arc-shaped bend can adjust the angle synchronously, always maintaining the integrity of the closed-loop seal.

[0055] A mooring post 204 is fixed above the mounting shell 2. The mooring post 204 is used to connect the mounting shell 2 to the cable car on the deck by a cable. It is used not only to drag the processing device on the surface of the hull, but also to prevent the processing device from falling off the surface of the hull.

[0056] The brush mounting plate 6 has a ventilation opening 602, and a vacuum cleaner 603 is fixed at the ventilation opening 602. The vacuum cleaner 603 is located outside the area enclosed by the brush mounting plate 6, the inlet of the vacuum cleaner 603 faces the inside of the area enclosed by the brush mounting plate 6, and the outlet of the vacuum cleaner 603 is connected to the inside of the mounting shell 2 through a pipe.

[0057] Working principle: When it is necessary to treat rust and paint on the hull surface, the processing device is connected to the mooring bollard 204 and the cable car. The cable car pulls the processing device across the hull surface. During the movement, the nozzle 102 sprays sand, and the sand collides with the rust and paint on the hull surface, peeling them off. When the hull surface has a certain curvature, the nozzle 102 will impact the hull surface. At this time, the distance between the nozzle 102 and the hull surface is changed by altering the angle between the base 1 and the support plate 101 at their junction.

[0058] During the processing of the ship hull surface, the sand and gravel sprayed from the nozzle 102 are reflected in all directions after impacting the ship hull. As the sand and gravel impact the ship hull itself, they will break and produce sand and gravel particles of different sizes. Some of the sand and gravel particles enter the other end of the base 1 through the through hole 1071 of the screening plate 107, while the other part of the sand and gravel particles impact the surface of the screening plate 107, causing the screening plate 107 to vibrate.

[0059] During the oscillation of the screening plate 107, it impacts the sand and gravel inside the mounting shell 2, giving the sand and gravel an initial velocity, causing them to move in the opposite direction to the screening plate 107. The coarse sand inside the mounting shell 2 moves towards the collection device 109 under the action of gravity and the air force blown by the second blowing device 108 and enters the collection device 109, and further enters the storage chamber 3 for reuse.

[0060] Due to its small mass, the fine sand is suspended in a dust-like state within the mounting housing 2 due to air resistance. Under the influence of the airflow from the second blower 108 and the first blower 202, it moves towards the second collection device 109 and the first collection device 203. Since the collection range of the first collection device 203 is much larger than that of the second collection device 109, most of the fine sand enters the first collection device 203 and is collected by the fine sand collection box.

[0061] A vibration sensor is installed on the screening plate 107 to detect the vibration amplitude of the screening plate 107. When there is obvious deformation (dimpling or protrusion) on the hull surface, the angle between the direction of the sand and gravel hitting the hull and the hull surface changes, the rebound angle changes accordingly, the number of sand and gravel hitting the screening plate 107 changes, and the vibration amplitude of the screening plate 107 also changes accordingly. The vibration amplitude of the screening plate 107 reflects whether there is obvious deformation on the hull surface.

[0062] When a dent occurs on the surface of the hull, cylinder 5 drives suction cup 501 to fit into the dent. Vacuum pump draws a vacuum to generate negative pressure. Combined with the slow pull-back action of cylinder 5, slight dents can be adsorbed and corrected to restore the smoothness of the hull surface.

[0063] When a protrusion occurs on the surface of the hull, the cylinder 5 can drive the hammering pile 502 to perform high-frequency, low-amplitude impacts on the protruding deformation or rust lumps on the hull surface. This can both break the rust layer and correct the small protrusions, avoiding damage to the substrate.

[0064] This device can also reflect the degree of rust on the hull surface. When there is severe rust on the hull surface, sandblasting may not be able to completely remove it. Since severe rust will affect the magnetic force between the magnetic wheel 401 and the hull, the force sensor is used to reflect the change in magnetic force, thereby reflecting the rust condition on the hull.

[0065] When the force sensor detects that the adsorption force is lower than the set threshold A, the built-in rotary drive 412 will cause the sealing plate 406 to rotate around the hinge shaft until the grinding roller 408 protrudes from the wheel surface and contacts the hull surface. As the magnetic wheel 401 rotates, it can grind and clean the rust or attachments on the hull surface. During the grinding process, the impurities generated by grinding are guided into the collection chamber 409 by centrifugal force.

[0066] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A device for processing the outer surface of a ship hull, characterized in that, It includes two identical and symmetrically distributed bases, with a support plate hinged between the two bases. A nozzle facing away from the support plate is mounted on the surface of the support plate, and a pressure device connected to the nozzle is provided. Each base has an opening at its top surface, and the bottom of the opening is connected to a rectangular mounting groove. Several springs are evenly fixed to the bottom of the rectangular mounting groove, and a screening plate is fixed to the other end of the springs. Several rows of through holes are arrayed on the screening plate, and the mesh size of the through holes gradually increases along the direction away from the support plate. Both bases are sealed and fixed with mounting shells. One of the mounting shells has a storage chamber fixed inside. The top of the storage chamber has a feed inlet that penetrates the outer wall of the mounting shell, and the bottom has a discharge outlet that is connected to the input end of the pressure device. Each of the mounting housings is provided with a pressure regulating device, a blowing device, and a collecting device. The pressure regulating device is fixedly connected to the top of the mounting housing. The blowing device and the collecting device are arranged opposite to each other and are both fixed to the side wall of the mounting housing. The collecting device is connected to a collecting pipe for connecting to a fine sand collecting box. Above the screening plate are fixed a blowing device 2 and a collecting device 2 arranged opposite to each other. Both the blowing device 2 and the collecting device 2 are in contact with and slidably connected to the inner wall of the opening. The collecting device 2 is connected to a collecting pipe 2. The end of the collecting pipe 2 away from the collecting device 2 is connected to the storage chamber. Both bases have rotating blocks hinged to their side walls, and a magnetic wheel is mounted on the side of the rotating block away from the base via a wheel frame.

2. The hull outer surface processing device according to claim 1, characterized in that, Each of the bases has two cylinders fixed at its bottom, symmetrical about the central axis of the base. Both cylinders are located within the projection coverage area of ​​the opening and the support plate. One of the cylinders has a vacuum suction cup fixed to its output end via a buffer spring seat. The vacuum suction cup is connected to the vacuum pump built into the base via an air pipe. The other cylinder has a hammering stake detachably connected to its output end.

3. The hull outer surface processing device according to claim 2, characterized in that, The second blowing device and the second collecting device are arranged in parallel with the first blowing device and the first collecting device, and all four are located on the flow path of the sandblasting on the screening plate.

4. The hull outer surface processing device according to claim 3, characterized in that, A force sensor is attached to the surface of the magnetic wheel, and a miniature drive motor is provided at the axle of the magnetic wheel. The output end of the miniature drive motor is fixedly connected to the rotating block. An annular mounting groove is provided on the side wall of each of the two magnetic wheels on any of the bases. Several arc-shaped sealing plates are evenly distributed between the inner walls of the two sides of the annular mounting groove. One end of the sealing plate is hinged to the side wall of the annular mounting groove near the wheel axle through a miniature hinge. A rotation drive is provided at the hinge point between the sealing plate and the annular mounting groove. A mounting base is fixed to the inner wall of the sealing sheet near the opening of the annular mounting groove. A grinding roller is rotatably connected to the mounting base via a bearing. The axis of the grinding roller is parallel to the axis of the magnetic wheel, and the outer circumferential surface of the grinding roller is flush with the outer surface of the sealing sheet.

5. The hull outer surface processing device according to claim 4, characterized in that, An annular collection chamber is provided on the side of the annular mounting groove away from the hinge end of the sealing sheet. A collection hole is provided at the bottom of the collection chamber through the magnetic wheel body. A threaded sealing plug with a silicone sealing ring is provided in the collection hole.

6. The hull outer surface processing apparatus according to claim 5, characterized in that, The sealing sheet has a magnetic strip on the mating surface with the annular mounting groove.

7. The hull outer surface processing apparatus according to claim 6, characterized in that, Each of the rotating blocks is equipped with an angle locking knob at the hinge point between itself and the base, and a distance sensor is provided on the side wall of the base.

8. The hull outer surface processing apparatus according to claim 7, characterized in that, The end of the hammer pile is equipped with a replaceable wear-resistant steel head, which can be either flat or pointed. The middle section of the hammer pile is fitted with a shock-absorbing rubber sleeve.

9. A hull outer surface processing device according to claim 8, characterized in that, The base is surrounded by a brush mounting plate along the outer edge of the two openings. The thickness and height of the brush mounting plate are slightly lower than the height of the tire support. It is fixed to the outer peripheral wall of the base by bolts. The brush mounting plate and the peripheral wall of the base are fixed to form a closed-loop sealing frame. Several sets of elastic brushes are evenly distributed along the perimeter of the inner side wall of the brush mounting plate. The bristles of two adjacent sets of elastic brushes are arranged alternately.

10. A hull outer surface processing apparatus according to claim 9, characterized in that, The brush mounting plate has a ventilation opening, and a vacuum cleaner is fixed at the ventilation opening. The vacuum cleaner's inlet faces the inside of the area enclosed by the brush mounting plate, and its outlet is connected to the inside of the mounting shell through a pipe.

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