Maintenance boat for maintaining boat body

Abstract

The invention relates to the technical field of ocean engineering equipment, in particular to a maintenance boat for hull maintenance, which comprises a maintenance boat body, a connecting mechanism for maintenance is arranged on one side of the maintenance boat body, the connecting mechanism comprises a connecting table, and a first buffer structure and a second buffer structure are arranged on the connecting table. According to the maintenance boat for ship body maintenance, multi-stage buffering such as spring buffering at the vacuum suction cups, hydraulic damping between the sliding seats and auxiliary adjustment of the connecting arms are designed, and various impact forces generated when the maintenance boat approaches or makes contact with a target ship body can be effectively absorbed and dispersed; the risk of equipment damage or connection failure caused by hard collision is greatly reduced, in addition, a designed secondary protection mechanism such as a hanging rod is arranged and can be automatically triggered immediately when a suction cup fails, the hanging rod is opened through deformation force of a buffer spring to hook a preset hanging piece, the maintenance boat body is prevented from being instantly separated from a target boat body, and the service life of the maintenance boat body is prolonged. And the connection safety and reliability are greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of offshore engineering equipment, in particular to a maintenance boat for ship body maintenance. BACKGROUND

[0002] Offshore engineering equipment is long-term served in harsh marine environment, and the ship body structure is inevitably affected by seawater corrosion, biological attachment, mechanical damage and fatigue caused by wave load. Regular, efficient and safe detection, cleaning, anticorrosive coating repair, local welding repair and other maintenance operations of the ship body of these key equipment are the key links to ensure the structural integrity, operational safety and prolong the service life. However, such equipment is bulky and complex in structure, and is usually in operation or mooring state, so it is difficult to frequently enter the dry dock for maintenance, and therefore the demand for efficient, flexible and economical underwater / in-water in-situ maintenance technology is urgent. In order to meet the above demand, a special designed maintenance boat emerges as the times require.

[0003] According to the search, the patent document with the publication number CN207697950U discloses a maintenance boat for ship body maintenance, mainly including a ship body part, a power part, a direction control part and a ladder part. The power part is located at the bottom of the tail of the ship body part, the direction control part is installed on the left and right sides of the head of the ship body part, and the bottom of the ladder part is fixed above the tail of the ship body part. The application is provided with a power part and a direction control part, so that the ship body can be flexibly driven and the operation is simple.

[0004] For the related technology in the above, the inventors found that at least the following problems exist in the technology, such as the lack of active connection fixing function of the boat and the resulting shaking problem, and the lack of effective mechanism for establishing active connection fixation with the maintenance object. The lack of such connection function inevitably affects the maintenance boat during operation, resulting in harmful shaking, which seriously restricts the precision, quality, efficiency, safety and application of complex high-precision maintenance technology of the maintenance operation, and therefore a maintenance boat for ship body maintenance is proposed to solve the problems in the above. SUMMARY

[0005] In view of the deficiencies of the prior art, in order to reduce the disturbance of the marine environment, the present application provides a maintenance boat for ship body maintenance, which has the advantages of multiple buffering mechanisms and failure protection, solves the problem that the boat lacks effective mechanism for establishing active connection fixation with the maintenance object, and inevitably affects the maintenance boat during operation.

[0006] The present application provides a maintenance boat for ship body maintenance, which adopts the following technical solution:

[0007] The utility model provides a kind of maintenance dinghy for ship maintenance, including maintenance dinghy body, the side of maintenance dinghy body is provided with the connecting mechanism for maintenance, the connecting mechanism includes connecting table, buffer structure one and buffer structure two are provided on the connecting table, buffer structure one and buffer structure two are mutually used, and lubricating structure is also provided on the connecting table and cooperates with buffer structure one;

[0008] Buffer structure one includes two sliding seats slidingly disposed on the connecting table, the bottom side of the two sliding seats is fixed with a guide block slidingly connected with the connecting table, and a hydraulic damper is arranged between the two sliding seats, and a connecting piece is arranged between the two sliding seats.

[0009] Buffer structure two includes a buffer piece arranged on one side of the connecting table and connected with one of the sliding seats, the buffer piece includes a sleeve, a sliding block is slidingly arranged inside the sleeve, one side of the sliding block is fixed with an extension rod extending to the outside of the sleeve, a buffer spring is fixed between the sliding block and the sleeve, and the other end of the extension rod is provided with a vacuum chuck connected with the object to be inspected.

[0010] The lubricating structure is arranged on the bottom side of one of the sliding seats, and the lubricating structure includes a piston piece and an abutting piece that are used in cooperation, and the connecting table is provided with a wave seat for driving the abutting piece.

[0011] Optionally, one side of the connecting table is hingedly connected with the outer wall of the maintenance dinghy body, a guide groove and a mounting groove are formed in the interior of the connecting table, and a sliding opening is formed in communication between the guide groove and the mounting groove.

[0012] The beneficial effects of the above optional scheme are that the guide groove is formed in the interior of the connecting table to provide a precise movement track for the sliding seat and other components cooperating therewith. When the sliding seat slides in the guide groove, it can move in a predetermined direction and track, avoiding deviation and jamming during movement, and ensuring the stability and reliability of the connection.

[0013] Optionally, the sliding seat is slidingly connected with the guide groove, the two sliding seats are symmetrically arranged, and connecting ears for fixing the hydraulic damper are mounted on the side walls of the two sliding seats, the interiors of the two sliding seats are hollow, and the two sliding seats store damping liquid and lubricating liquid, respectively.

[0014] The beneficial effects of the above optional scheme are that the two sliding seats are symmetrically arranged, and this layout can balance the force generated during the movement of the sliding seat. When the sliding seat is subjected to external force, the symmetrical structure can evenly distribute the force on both sides, reducing the inclination or distortion caused by uneven force on one side. For example, when subjected to impact force, the two symmetrical sliding seats will respond accordingly, cooperate with each other, and absorb and disperse impact energy, ensuring the movement balance and stability of the entire connection structure.

[0015] Optionally, the connecting piece comprises a rotating shaft rotatably mounted on the upper surface of the connecting table, and a rotating table is fixed to the top end of the rotating shaft, and a connecting arm is hingedly connected between the two ends of the rotating table and the two sliding seats.

[0016] The beneficial effects of the above optional scheme are: when the maintenance boat is connected with the ship body and is subjected to impact force, the connecting arm can transmit the impact force to the rotating table and the rotating shaft, since the rotating table is connected with the connecting table through the rotating shaft, and the two sliding seats are symmetrically arranged and connected with the rotating table through the connecting arm, the impact force can be dispersed in the whole structure, which can avoid local overloading and reduce the risk of damage of each part of the connecting piece due to force concentration, thereby improving the impact resistance and service life of the connecting piece.

[0017] Optionally, a stirring assembly is arranged on the sliding seat for storing lubricating oil, the stirring assembly comprises a stirring shaft rotatably mounted in the sliding seat, a tooth plate is fixed to the side wall of the connecting table, and a gear engaged with the tooth plate is fixed to the end of the stirring shaft.

[0018] The beneficial effects of the above optional scheme are: by arranging the stirring assembly on the sliding seat for storing lubricating oil, when the sliding seat slides, the gear at the end of the stirring shaft is engaged with the tooth plate on the side wall of the connecting table, so that the stirring shaft rotates to stir the lubricating oil in the sliding seat, thereby preventing the lubricating oil from precipitating.

[0019] Optionally, a limiting frame limiting the buffer piece is fixed to the inner side of the mounting slot, two hanging rods are arranged on the side of the connecting table close to the second buffer structure, and a connecting rod is hingedly connected between the outer wall of the telescopic rod and the two hanging rods.

[0020] The beneficial effects of the above optional scheme are: during the connection and separation of the maintenance boat and the target ship body, the buffer piece is subjected to various external forces such as impact force and friction force, and the limiting frame can effectively limit the movement of the buffer piece under the action of these external forces, thereby preventing the buffer piece from being pulled out of the mounting slot or from unnecessary displacement. This ensures that the buffer piece is always in the correct working position and can continuously and stably provide the buffering function, thereby improving the reliability and safety of the connecting structure.

[0021] Optionally, two sliding grooves are formed in the side of the connecting table close to the second buffer structure, the two hanging rods are respectively in sliding cooperation with the two sliding grooves, and the end of the telescopic rod away from the vacuum suction disc is connected with one of the sliding seats.

[0022] The beneficial effects of the above optional scheme are: by arranging the hanging rods, the hanging rods can be immediately and automatically triggered when the vacuum suction disc fails, the hanging rods can be hooked on the pre-installed hanging piece by the deformation force of the buffer spring, thereby preventing the maintenance boat body from instantaneously separating from the target ship body, and greatly improving the connection safety and reliability.

[0023] Optionally, the piston member comprises a plug barrel arranged inside the mounting groove, the plug barrel is fixed to the bottom side of the slide base storing lubricating liquid, a piston is slidably arranged inside the plug barrel, one side of the piston is fixed with a plug rod connected with the abutting member, two check valves are arranged on the plug barrel, and a communication pipe is fixed to each of the two check valves.

[0024] The beneficial effect of the above optional scheme is that the undulating wave seat drives the abutting member and the piston member to move, realizing automatic circulation and supply of lubricating liquid without manual intervention, thereby improving the automation degree and use convenience of the equipment.

[0025] Optionally, a lubricating pad is sleeved and mounted on the outer surface of the guide block, the two communication pipes are fixedly communicated with the slide base storing lubricating liquid and the lubricating pad, and the communication pipes penetrate through the inside of the slide port.

[0026] The beneficial effect of the above optional scheme is that the lubricating pad can form a stable lubricating film between the guide block and the inner wall of the slide port under the infiltration of lubricating liquid, which can significantly reduce the friction coefficient between the two, reduce the friction resistance in the movement process, and the reduction of friction means that the wear between parts will also be reduced accordingly, thereby prolonging the service life of the guide block, the inner wall of the slide port and other components, and reducing the probability of connection structure loosening, jamming and other faults caused by wear.

[0027] Optionally, the abutting member comprises a lifting shaft arranged inside the mounting groove, the lifting shaft is slidably arranged on the bottom side of the slide base storing lubricating liquid, an adjusting shaft is adjustably arranged at the bottom end of the lifting shaft, a ball is rotatably arranged at the bottom end of the adjusting shaft, the ball abuts against the wave seat, a pushing arm is hingedly connected between the outer wall of the lifting shaft and the end of the plug rod, and a return spring is arranged on the lifting shaft.

[0028] The beneficial effect of the above optional scheme is that the adjusting shaft is adjustably arranged at the bottom end of the lifting shaft, so that the contact position and pressure between the ball and the wave seat can be changed by adjusting the length of the adjusting shaft according to actual use requirements. In different maintenance operation scenarios, the stress condition of the connection part of the ship body may be different. By adjusting the adjusting shaft, the abutting member can better adapt to various working conditions, ensuring the stability and reliability of the connection structure.

[0029] In summary, the present application has at least one of the following beneficial technical effects:

[0030] 1. The present application designs multi-stage buffers such as spring buffers at vacuum suction cups, hydraulic shock absorbers between sliding seats, and auxiliary adjustment of connecting arms, which can effectively absorb and disperse various impact forces generated when the maintenance boat approaches or contacts the target ship body, greatly reducing the risk of equipment damage or connection failure caused by hard collision. The buffer mechanism allows the connecting table and suction cup to have a certain compliance at the moment of contact, better fitting the possibly uneven ship wall, and continuously providing buffer when the ship moves relative to maintain the stability of the connection. In addition, the "secondary protection" mechanism such as the design of the hanging rod can immediately trigger automatically when the suction cup fails, and the hanging rod is opened by the deformation force of the buffer spring to hook the pre-set hanging piece, preventing the maintenance boat body from instantaneously separating from the target ship body, greatly improving the connection safety and reliability.

[0031] 2. The present application uses the ups and downs of the wave seat to drive the abutting piece and the piston piece to move, realizing automatic circulation and supply of lubricating liquid without manual intervention, improving the automation degree and use convenience of the equipment. Through the design of the check valve and the communication pipe, the lubricating liquid can be accurately delivered to the parts that need lubrication, ensuring smooth sliding between the guide block and the guide groove, reducing friction and wear, and prolonging the service life of the equipment.

[0032] 3. The present application is provided with a stirring assembly on the sliding seat storing lubricating oil. When the sliding seat slides, the gear on the end of the stirring shaft engages with the toothed plate on the side wall of the connecting table, thereby making the stirring shaft rotate and stirring the lubricating oil inside the sliding seat to prevent the lubricating oil from precipitating. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 is the overall structure perspective view of the present application;

[0034] Figure 2 is the overall structure schematic view of the connecting mechanism of the present application;

[0035] Figure 3 is the structure perspective view of the buffer structure one of the present application;

[0036] Figure 4 is the structure perspective view of the buffer structure two of the present application;

[0037] Figure 5 is the structure sectional view of the buffer piece of the present application;

[0038] Figure 6 is the structure schematic view of the stirring shaft of the present application;

[0039] Figure 7 is the structure sectional view of the lubricating structure of the present application;

[0040] Figure 8 is the structure schematic view of the present application Figure 6 is the enlarged structure schematic view of A shown in the present application.

[0041] Reference Signs List:

[0042] 1, maintenance of small boat body; 2, connecting mechanism; 21, connecting table; 211, guide groove; 212, mounting groove; 213, sliding port; 22, buffer structure one; 221, sliding seat; 222, connecting lug; 223, hydraulic shock absorber; 224, rotating shaft; 225, rotating table; 226, connecting arm; 227, stirring shaft; 228, toothed plate; 229, gear; 2210, guide block; 23, buffer structure two; 231, buffer; 2311, sleeve; 2312, sliding block; 2313, telescopic rod; 2314, buffer spring; 232, vacuum chuck; 233, hanging rod; 234, connecting rod; 235, limiting frame; 236, sliding groove; 24, lubricating structure; 241, plug cylinder; 242, piston; 243, plug rod; 244, check valve; 245, lifting shaft; 246, adjusting shaft; 247, ball; 248, pushing arm; 249, lubricating pad; 2410, wave seat; 2411, communication pipe. DETAILED DESCRIPTION

[0043] The following will be described in detail in combination with the accompanying drawings Figures 1 to 8 The application is further described in detail.

[0044] The embodiment of the application discloses a maintenance small boat for ship maintenance. Figures 1 to 8 The maintenance small boat for ship maintenance comprises a maintenance small boat body 1, a connecting mechanism 2 for maintenance is arranged on one side of the maintenance small boat body 1, the connecting mechanism 2 comprises a connecting table 21, a buffer structure one 22 and a buffer structure two 23 are arranged on the connecting table 21, the buffer structure one 22 and the buffer structure two 23 are used in cooperation, and a lubricating structure 24 used in cooperation with the buffer structure one 22 is further arranged on the connecting table 21.

[0045] The buffer structure one 22 comprises two sliding seats 221 slidingly arranged on the connecting table 21, the bottom side of each of the two sliding seats 221 is fixed with a guide block 2210 in sliding connection with the connecting table 21, a hydraulic shock absorber 223 is arranged between the two sliding seats 221, and a connecting piece is arranged between the two sliding seats 221; wherein one side of the connecting table 21 is hingedly connected with the outer wall of the maintenance small boat body 1, a guide groove 211 and a mounting groove 212 are formed in the connecting table 21, and a sliding port 213 in communication is formed between the guide groove 211 and the mounting groove 212. The guide groove 211 is formed in the connecting table 21, which provides an accurate movement track for the sliding seat 221 and other components matched therewith. When the sliding seat 221 slides in the guide groove 211, it can move in a predetermined direction and track, avoiding deviation and jamming in the movement process, and ensuring the stability and reliability of the connection.

[0046] Specifically, the sliding seat 221 is in sliding connection with the guide groove 211, two sliding seats 221 are symmetrically arranged, and a connecting lug 222 for fixing a hydraulic shock absorber 223 is arranged on the side wall of each of the two sliding seats 221, and the interiors of the two sliding seats 221 are hollow, and shock-absorbing liquid and lubricating liquid are respectively stored in the interiors of the two sliding seats 221. It should be noted that the two sliding seats 221 are symmetrically arranged, and this arrangement can balance the force generated by the sliding seat 221 during movement. When the sliding seat 221 is subjected to an external force, the symmetrical structure can uniformly distribute the force on both sides, reducing the inclination or distortion caused by uneven force on one side. For example, when subjected to an impact force, the two symmetrical sliding seats 221 will simultaneously respond to the impact force, cooperate with each other, and jointly absorb and disperse the impact energy, thereby ensuring the movement balance and stability of the entire connecting structure.

[0047] To improve the buffering effect, the connecting piece comprises a rotating shaft 224 rotatably installed on the upper surface of the connecting table 21, and a rotating table 225 is fixed to the top end of the rotating shaft 224. A connecting arm 226 is hingedly connected between the two ends of the rotating table 225 and the two sliding seats 221. When the maintenance boat is connected to the ship body and subjected to an impact force, the connecting arm 226 can transmit the impact force to the rotating table 225 and the rotating shaft 224. Since the rotating table 225 is connected to the connecting table 21 through the rotating shaft 224, and the two sliding seats 221 are symmetrically arranged and connected to the rotating table 225 through the connecting arm 226, the impact force can be dispersed in the entire structure. This dispersion can avoid excessive local stress and reduce the risk of damage to the components of the connecting piece due to concentrated stress, thereby improving the impact resistance and service life of the connecting piece. It should be noted that the connection between the connecting arm 226 and the sliding seat 221 can be adjusted as needed. Different sizes of ship bodies have different requirements for the position and angle of the connecting piece when connected. The design of the connecting piece allows the rotating table 225 to rotate and adjust the angle, and simultaneously drives the sliding seat 221 to slide and change position, thereby adapting to the connection requirements of different sizes of ship bodies. Whether it is the connection of a small maintenance boat and a large cargo ship or the docking between different specifications of ships, the position of the rotating table 225 and the sliding seat 221 can be adjusted to accurately match the connecting points on the ship body, thereby improving the versatility and application range of the maintenance boat.

[0048] A stirring assembly is arranged on the sliding seat 221 storing lubricating oil, and the stirring assembly comprises a stirring shaft 227 rotatably installed in the interior of the sliding seat 221. A toothed plate 228 is fixed to the side wall of the connecting table 21, and a gear 229 engaged with the toothed plate 228 is fixed to the end of the stirring shaft 227. By arranging the stirring assembly on the sliding seat 221 storing lubricating oil, when the sliding seat 221 slides, the gear 229 at the end of the stirring shaft 227 engages with the toothed plate 228 on the side wall of the connecting table 21, thereby rotating the stirring shaft 227 to stir the lubricating oil in the interior of the sliding seat 221, preventing the lubricating oil from precipitating.

[0049] In addition, by stirring, the lubricating oil is prevented from being deposited and deteriorated, the service life of the lubricating oil is prolonged, and the replacement period can be appropriately extended. This not only reduces the consumption of lubricating oil and reduces the purchase cost of lubricating oil, but also reduces the downtime and labor cost of equipment caused by frequent replacement of lubricating oil, and improves the overall economic benefit of the equipment.

[0050] In order to realize smooth connection, the buffer structure two 23 includes a buffer piece 231 arranged on one side of the connecting table 21 and connected with one of the sliding seats 221. The buffer piece 231 includes a sleeve 2311, a sliding block 2312 is arranged in the sleeve 2311, one side of the sliding block 2312 is fixed with an extension rod 2313 extending to the outside of the sleeve 2311, a buffer spring 2314 is fixed between the sliding block 2312 and the sleeve 2311, and the other end of the extension rod 2313 is provided with a vacuum chuck 232 connected with the object to be repaired. The inner side of the mounting groove 212 is fixed with a limiting frame 235 limiting the buffer piece 231, and the side of the connecting table 21 close to the buffer structure two 23 is provided with two hanging rods 233, and the outer wall of the extension rod 2313 and the two hanging rods 233 are hinged with a connecting rod 234. Specifically, during the connection and separation of the maintenance small boat and the target ship body, the buffer piece 231 will be subjected to various external forces such as impact force and friction force, and the limiting frame 235 can effectively limit the movement of the buffer piece 231 under the action of these external forces, preventing it from being pulled out of the mounting groove 212 or unnecessary displacement. This ensures that the buffer piece 231 is always in the correct working position and can continuously and stably provide the buffer function, improving the reliability and safety of the connecting structure.

[0051] It should be noted that the side of the connecting table 21 close to the buffer structure two 23 is provided with two sliding grooves 236, the two hanging rods 233 are respectively in sliding cooperation with the two sliding grooves 236, and the end of the extension rod 2313 away from the vacuum chuck 232 is connected with one of the sliding seats 221. Through the setting of the hanging rod 233, when the vacuum chuck 232 fails, it can be immediately triggered automatically, and the hanging rod 233 is opened and hooked with the preset hanging piece through the deformation force of the buffer spring 2314, preventing the maintenance small boat body 1 from being instantaneously separated from the target ship body, and greatly improving the connection safety and reliability.

[0052] It is worth mentioning that when the telescopic rod 2313 extends inward, the two hanging rods 233 are driven to move relative to each other through the connecting rod 234. Since the maintenance object is provided with a hanging piece on both sides of the vacuum chuck 232 for hooking the hanging rod 233, when the vacuum chuck 232 is accidentally disconnected from the maintenance object, the deformation of the buffer spring 2314 will cause the two hanging rods 233 to expand outward and hook the previously arranged hanging piece. This secondary protection mechanism can provide additional connection support for the maintenance boat in the event of vacuum adhesion failure, preventing the maintenance boat body 1 from being unable to reconnect after being disconnected from the maintenance object, further ensuring the safety of the maintenance personnel.

[0053] In order to ensure the stable movement of the two sliding seats 221, a lubricating structure 24 is arranged on the bottom side of one of the sliding seats 221. The lubricating structure 24 includes a piston member and an abutting member that cooperate with each other, and a wave seat 2410 is arranged on the connecting table 21 for driving the abutting member. The piston member includes a plug barrel 241 arranged inside the mounting groove 212, the plug barrel 241 is fixed to the bottom side of the sliding seat 221 storing lubricating liquid, a piston 242 is slidably arranged inside the plug barrel 241, one side of the piston 242 is fixed with a plug rod 243 connected with the abutting member, and two check valves 244 are arranged on the plug barrel 241, and the two check valves 244 are each fixed with a communication pipe 2411. Specifically, the abutting member and the piston member are driven to move by the ups and downs of the wave seat 2410, realizing automatic circulation supply of lubricating liquid without manual intervention, improving the automation degree and use convenience of the equipment.

[0054] The outer surface of the guide block 2210 is sleeved with a lubricating pad 249, the two communication pipes 2411 are fixedly communicated with the sliding seat 221 storing lubricating liquid and the lubricating pad 249, and the communication pipes 2411 penetrate through the inside of the sliding port 213. The lubricating pad 249 can form a stable lubricating film between the guide block 2210 and the inner wall of the sliding port 213 under the infiltration of lubricating liquid, which can significantly reduce the friction coefficient between the two, reduce the friction resistance in the movement process, and the reduction of friction force means that the wear between components will also be reduced accordingly, thereby prolonging the service life of the guide block 2210, the inner wall of the sliding port 213 and other components, and reducing the probability of connection structure loosening, jamming and other faults caused by wear. The top side of the sliding seat 221 is provided with a moving port communicated with the mounting groove 212 for the work of the piston member.

[0055] The abutting piece comprises a lifting shaft 245 arranged inside the mounting groove 212, the lifting shaft 245 is slidingly installed at the bottom side of the storage lubricating liquid sliding seat 221, the bottom end of the lifting shaft 245 is adjustably installed with an adjusting shaft 246, the bottom end of the adjusting shaft 246 is rotatably installed with a ball 247, the ball 247 abuts against the wave seat 2410, the outer wall of the lifting shaft 245 is hingedly connected with the push arm 248 at the end of the plug rod 243, and the lifting shaft 245 is provided with a reset spring. The adjusting shaft 246 is adjustably installed at the bottom end of the lifting shaft 245, so that according to the actual use requirement, the contact position and pressure between the ball 247 and the wave seat 2410 can be changed by adjusting the length of the adjusting shaft 246, in different maintenance operation scenes, the stress condition of the hull connecting part may be different, by adjusting the adjusting shaft 246, the abutting piece can better adapt to various working conditions, and the stability and reliability of the connecting structure are ensured.

[0056] The accompanying drawings are incorporated into the present application Figures 1 to 8 The working principle of the above embodiment is as follows:

[0057] The maintenance small boat body 1 is operated to approach the target hull, the angle of the connecting table 21 is adjusted to be parallel to the ship wall, the vacuum suction cup 232 first contacts the hull, when impacted, the telescopic rod 2313 drives the sliding block 2312 to slide in the sleeve 2311, the buffer spring 2314 is compressed, and the impact energy is absorbed through the elastic deformation of the buffer spring 2314, thereby playing a buffering role.

[0058] When the telescopic rod 2313 extends inward, one of the sliding seats 221 is displaced, the two sliding seats 221 on the connecting table 21 slide in the guide groove 211 through the installation of the connecting piece, and since the hydraulic shock absorber 223 is arranged between the two sliding seats 221, the impact force causes the hydraulic shock absorber 223 to stretch and deform, and the impact energy is absorbed and dispersed through the flow of hydraulic oil in the hydraulic shock absorber 223, thereby playing a preliminary buffering role.

[0059] Meanwhile, the rotating table 225 is rotatably installed on the upper surface of the connecting table 21 through the rotating shaft 224, the connecting arms 226 are hingedly connected between the two sliding seats 221 at the two ends of the rotating table 225, in the sliding process of the sliding seat 221, the connecting arm 226 drives the rotating table 225 to rotate, further adjusts the sliding state of the sliding seat 221, and assists in buffering, finally the vacuum pump is started to be adsorbed and fixed, and the connection between the maintenance small boat body 1 and the maintenance object is realized.

[0060] In addition, when the telescopic rod 2313 extends inward, the two hanging rods 233 are driven to move relatively by the connecting rod 234. Since the maintenance object is provided with a hanging piece on both sides of the vacuum chuck 232 for hooking the hanging rod 233, when the vacuum chuck 232 is accidentally disconnected from the maintenance object, the deformation of the buffer spring 2314 causes the two hanging rods 233 to expand outward and hook the hanging piece arranged in advance, thereby achieving a secondary protection effect, avoiding the situation that the maintenance boat body 1 cannot be connected with the maintenance object again after the vacuum chuck 232 is disconnected, and further ensuring the safety of the maintenance personnel.

[0061] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application, so: any equivalent changes made on the basis of the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A small repair boat for hull maintenance, comprising a repair boat body (1), characterized in that: The maintenance boat body (1) is provided with a connection mechanism (2) for maintenance on one side. The connection mechanism (2) includes a connection platform (21). The connection platform (21) is provided with a buffer structure one (22) and a buffer structure two (23). The buffer structure one (22) and the buffer structure two (23) are used in cooperation with each other. The connection platform (21) is also provided with a lubrication structure (24) for use with the buffer structure one (22). The buffer structure (22) includes two slide blocks (221) slidably disposed on the connecting platform (21). The bottom sides of the two slide blocks (221) are fixed with guide blocks (2210) slidably connected to the connecting platform (21). A hydraulic damper (223) is provided between the two slide blocks (221). A connecting member is provided between the two slide blocks (221). The second buffer structure (23) includes a buffer component (231) disposed on one side of the connecting platform (21) and connected to one of the slide blocks (221). The buffer component (231) includes a sleeve (2311). A slider (2312) is slidably disposed inside the sleeve (2311). A telescopic rod (2313) extending to the outside of the sleeve (2311) is fixed on one side of the slider (2312). A buffer spring (2314) is fixed between the slider (2312) and the sleeve (2311). A vacuum suction cup (232) connected to the object under maintenance is installed at the other end of the telescopic rod (2313). The lubrication structure (24) is disposed on the bottom side of one of the slides (221). The lubrication structure (24) includes a piston and an abutment that cooperate with each other. A wave seat (2410) for driving the abutment is provided on the connecting platform (21).

2. A small repair boat for hull maintenance according to claim 1, characterized in that: One side of the connecting platform (21) is hinged to the outer wall of the repair boat body (1). The connecting platform (21) has a guide groove (211) and an installation groove (212) inside, and a connecting slot (213) is provided between the guide groove (211) and the installation groove (212).

3. A small repair boat for hull maintenance according to claim 2, characterized in that: The slide block (221) is slidably connected to the guide groove (211). The two slide blocks (221) are symmetrically arranged, and the side walls of the two slide blocks (221) are equipped with connecting ears (222) for fixing the hydraulic shock absorber (223). The interior of the two slide blocks (221) is hollow, and the two slide blocks (221) respectively store damping fluid and lubricating fluid.

4. A small repair boat for hull maintenance according to claim 1, characterized in that: The connector includes a rotating shaft (224) rotatably mounted on the upper surface of the connecting platform (21), a rotating platform (225) fixed at the top end of the rotating shaft (224), and connecting arms (226) hinged between the two ends of the rotating platform (225) and the two slides (221).

5. A small repair boat for hull maintenance according to claim 3, characterized in that: The slide (221) for storing lubricating oil is provided with a stirring assembly, which includes a stirring shaft (227) rotatably installed inside the slide (221), a toothed plate (228) is fixed on the side wall of the connecting platform (21), and a gear (229) that meshes with the toothed plate (228) is fixed at the end of the stirring shaft (227).

6. A small repair boat for hull maintenance according to claim 2, characterized in that: The inner side of the mounting groove (212) is fixed with a limiting frame (235) for limiting the buffer (231). The connecting platform (21) is provided with two hanging rods (233) on the side near the second buffer structure (23). The outer wall of the telescopic rod (2313) is hinged to the two hanging rods (233) with a connecting rod (234).

7. A small repair boat for hull maintenance according to claim 6, characterized in that: The connecting platform (21) has two sliding grooves (236) on the side near the second buffer structure (23). The two hanging rods (233) are slidably engaged with the two sliding grooves (236) respectively. The end of the telescopic rod (2313) away from the vacuum suction cup (232) is connected to one of the sliding seats (221).

8. A small repair boat for hull maintenance according to claim 2, characterized in that: The piston component includes a plug cylinder (241) disposed inside the mounting groove (212). The plug cylinder (241) is fixed to the bottom side of the slide block (221) storing lubricating fluid. A piston (242) is slidably disposed inside the plug cylinder (241), and a plug rod (243) connected to the abutment is fixed on one side of the piston (242). Two check valves (244) are disposed on the plug cylinder (241), and a connecting pipe (2411) is fixed on each of the two check valves (244).

9. A small repair boat for hull maintenance according to claim 8, characterized in that: The outer surface of the guide block (2210) is fitted with a lubricating pad (249), and the two connecting pipes (2411) are fixedly connected to the slide block (221) storing lubricating fluid and the lubricating pad (249), respectively. The connecting pipes (2411) penetrate the interior of the slide opening (213).

10. A small repair boat for hull maintenance according to claim 9, characterized in that: The abutment includes a lifting shaft (245) disposed inside the mounting groove (212). The lifting shaft (245) is slidably mounted on the bottom side of the lubricating fluid storage slide (221). An adjusting shaft (246) is adjustablely mounted on the bottom end of the lifting shaft (245). A ball bearing (247) is rotatably mounted on the bottom end of the adjusting shaft (246). The ball bearing (247) abuts against the wave seat (2410). A push arm (248) is hinged to the outer wall of the lifting shaft (245) and the end of the stopper rod (243). A return spring is provided on the lifting shaft (245).

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