Protective structure convenient to coat at manhole of ship body
By adding inlet/outlet cylinders and support components to the ship's manhole, the problems of manhole wear and safety hazards were solved, and a protective structure design that is easy to paint and safe was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-25
- Publication Date
- 2026-04-03
AI Technical Summary
In the existing technology, ship manholes are prone to wear during frequent opening and closing, and the semi-enclosed space formed by the support structure affects welding and painting operations, posing a safety hazard.
Adding inlet/outlet cylinders and supporting components at the manhole, including an extension cylinder, a support plate, a baffle plate, and a protective plate, forms a stable protective structure, reduces wear, and provides drainage and buffering to ensure sealing and safety.
It effectively protects the manhole structure, reduces wear and moisture erosion, improves the convenience of painting operations, and ensures the safety and structural integrity of the ship.
Smart Images
Figure CN224075722U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of shipbuilding technology, specifically to a protective structure for easy painting of manholes on ship hulls. Background Technology
[0002] Ships are composed of many compartments of varying sizes, each with a different function. Depending on the ship's performance and operating environment requirements, such as oil / chemical tankers and aquaculture vessels, all types of compartments require painting operations. To facilitate entry and exit from the compartments, manholes and manhole covers are necessary.
[0003] In existing technologies, frequent opening and closing of manholes and entry / exit during shipbuilding construction is necessary. For workers, carrying tools into the manholes is difficult and prone to contact with the manhole walls, causing significant wear and tear. Furthermore, the need for manhole covers necessitates the addition of supporting structures on the outside of the manhole, creating a narrow, semi-enclosed space. This is detrimental to welding, grinding, and oiling operations during shipbuilding, and there is a risk of oil and gas leaks within the semi-enclosed space, potentially leading to explosions and compromising ship safety. Therefore, providing protective structures to support the manholes facilitates painting operations and ensures subsequent ship safety. Utility Model Content
[0004] Therefore, the technical problem to be solved by this utility model is to overcome the defects of the manhole support in the prior art, thereby providing a protective structure for the manhole of the ship that is easy to paint.
[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:
[0006] A protective structure for easy painting at a ship's manhole includes a deck surface and an access cylinder. The deck surface has a passage hole, and the access cylinder is concentrically positioned with a vertical axis. The outer wall of the access cylinder is fixed to the inner wall of the passage hole. The access cylinder includes an integrally formed protruding cylinder and an extension cylinder. The protruding cylinder is positioned above the deck surface, and the extension cylinder is positioned below the deck surface. The height of the extension cylinder does not exceed one-third of the height of the protruding cylinder. A support member is fixed to the outer side of the protruding cylinder, and a protective plate is provided on the support member. A pre-installed seat extends from the top of the protruding cylinder, and the diameter of the pre-installed seat is larger than the diameter of the protruding cylinder.
[0007] By adopting the above technical solution, an inlet / outlet cylinder is added to the manhole and a support component is installed for support, thereby ensuring the stability of the manhole and reducing the wear and tear on the manhole caused by workers. The support component forms a relatively smooth protective structure on the exterior surface while avoiding water vapor penetration and erosion, which also facilitates the subsequent ship cabin painting and processing operations, and does not affect the performance of the ship itself.
[0008] Furthermore, the outer side of the protruding cylinder is a frustum shape with the diameter decreasing from top to bottom, and the inner diameter of the protruding cylinder is not less than 600mm.
[0009] By adopting the above technical solutions, the inner diameter of the protruding hole is not less than 600mm, which meets the minimum standard for manholes and ensures that the structural dimensions on the ship meet the standards.
[0010] Furthermore, the outer wall of the protruding cylinder is fixed to the support member, which includes multiple triangular support plates arranged in a circumferential array outside the protruding cylinder. The bottom edge of the support plate is fixed to the upper surface of the deck surface, and the side edge of the support plate is fixed to the outer wall of the protruding cylinder.
[0011] By adopting the above technical solution, the support plate provides support for the protruding cylinder and forms the base frame of the top protective plate, which facilitates the subsequent installation of the protective plate.
[0012] Furthermore, the support also includes multiple baffles, which are arranged in a circumferential array outside the protruding cylinder. The baffles are fixed between two adjacent support plates and their height does not exceed one-quarter of the height of the support plate. The two ends of the baffles are fixed to the two adjacent support plates near the bottom. The two ends of the baffles are also provided with inclined surfaces that cooperate with the sides of the support plates.
[0013] By adopting the above technical solution, the baffle plate protects the bottom of the protruding cylinder from external water vapor erosion, while also providing support for the support plate to prevent it from tilting or falling over. The beveled end of the baffle plate facilitates welding operations.
[0014] Furthermore, a protective plate parallel to the inclined surface of each of the two adjacent support plates is connected between them. The protective plates are arranged in an array along the circumference of the protruding cylinder, and several protective plates are connected to cover the top of the support plate. The end of the protective plate near the protruding cylinder is arc-shaped and has a gap with the protruding cylinder. The end of the protective plate away from the protruding cylinder is also provided with multiple waist-shaped drainage holes, which are arranged in an array along the length of the bottom edge of the protective plate.
[0015] By adopting the above technical solution, the protective plate covering the support plate can reduce the recessed area formed by the support plate, deck surface and protruding cylinder. The protective plate forms a drainage surface along the slope of the support plate, which facilitates the discharge of external water vapor along the slope and avoids erosion affecting the support plate structure. The drainage holes at the bottom of the protective plate also facilitate the discharge of water vapor at the lower surface and avoid water droplet splashing.
[0016] Furthermore, the extension tube includes an integrally formed insertion tube and an expansion tube. The expansion tube is located below the insertion tube and its diameter increases from top to bottom. The connection between the expansion tube and the insertion tube is rounded. The height of the insertion tube is less than one-third of the height of the expansion tube.
[0017] By adopting the above technical solution, the expansion tube facilitates the guidance of workers into the manhole and reduces bumps and collisions at the manhole. The smooth transition between the expansion tube and the extension tube also avoids sharp corners. The lower height of the extension tube avoids taking up too much space inside the manhole.
[0018] Furthermore, the outer side of the expansion cylinder and the lower surface of the deck are supported by multiple mounting components. The mounting components are arranged in a circumferential array on the outer side of the expansion cylinder. Each mounting component includes a fixing plate, a connecting plate, and a mounting plate. The fixing plate is fixed to the bottom of the deck surface, and the mounting plate is fixed to the outer wall of the expansion cylinder. The connecting plate is U-shaped with its opening away from the center of the expansion cylinder. One side of the connecting plate is fixed to the fixing plate, and the other side is welded to the mounting plate.
[0019] By adopting the above technical solution, the installation component forms a relatively closed but not completely closed structure in the lower part of the deck surface and the outer expansion tube. On the one hand, it provides a buffer to avoid damage to the overall structure of the outer expansion tube when the staff hits it. On the other hand, it provides support for the outer expansion tube to prevent it from bending too much and encroaching on the internal space of the manhole.
[0020] Furthermore, the pre-installed seat is coaxially arranged with the extension cylinder and includes a seat body and a washer. The seat body is welded and fixed to the top of the extension cylinder, and the washer is fixed to the inner side wall of the seat body. A reserved hole is provided through the seat body near the outer periphery. The reserved hole is in the shape of a frustum with the diameter decreasing from top to bottom.
[0021] By adopting the above technical solution, a pre-installed seat is set up to reserve a corresponding installation position for the manhole cover. The gasket will engage with the manhole cover to ensure a seal at the manhole. The reserved hole facilitates the bolt installation of the manhole cover later.
[0022] In summary, the technical solution of this utility model has the following advantages:
[0023] 1. The protective structure for ship hull manholes provided by this utility model facilitates painting. By setting up support and mounting components to protect the manhole casing, wear at the manhole is reduced, ensuring the manhole's service life and preventing moisture erosion of the manhole structure. The support and mounting components are not completely sealed, allowing gas to escape to the outside in the event of an oil or gas leak, ensuring crew safety and improving ship safety.
[0024] 2. The protective structure for the manhole of the ship provided by this utility model is easy to paint. The protective plate is added to the support to fill the recessed area of the support structure and reduce the impact of excessive filling structure on the ship's weight. The flat exterior surface also facilitates the painting process and reduces local rework and fine repair.
[0025] 3. The protective structure for the manhole of the ship provided by this utility model is easy to paint. The reserved pre-installation seat and reserved hole realize the reliable support and installation of the manhole cover. The setting of gasket also facilitates the good sealing between the manhole cover and the inlet / outlet cylinder. Attached Figure Description
[0026] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0027] Figure 1 This is a schematic diagram of the overall structure of a protective structure for easy painting at the manhole of a ship hull, provided in one embodiment of the present utility model.
[0028] Figure 2 This is a cross-sectional view of a protective structure for easy painting at a manhole on a ship's hull, provided in one embodiment of the present invention.
[0029] Figure 3 This is a partially exploded structural diagram of the support frame provided in one embodiment of the present invention;
[0030] Figure 4 This is a partial structural diagram of the mounting component provided in one embodiment of the present invention.
[0031] Explanation of reference numerals in the attached figures:
[0032] 1. Deck surface; 11. Through hole; 2. Inlet / outlet tube; 21. Outlet tube; 22. Extension tube; 221. Insert tube; 222. Outward expansion tube; 3. Support component; 31. Support plate; 32. Water baffle; 4. Protective plate; 41. Drain hole; 5. Pre-installed seat; 51. Seat body; 511. Reserved hole; 52. Washer; 6. Mounting component; 61. Fixing plate; 62. Connecting plate; 63. Mounting plate. Detailed Implementation
[0033] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present invention and are not intended to limit the present invention.
[0034] A protective structure for easy painting of manholes on ship hulls, such as... Figure 1 , Figure 2 and Figure 3As shown, the manhole includes a deck surface 1 and an access cylinder 2. A passage hole 11 is provided on the deck surface 1. The access cylinder 2 concentrically passes through the passage hole 11 with its axis vertically aligned. The lower outer wall of the access cylinder 2 is fixed to the inner wall of the passage hole 11. The access cylinder 2 includes an integrally formed extension cylinder 21 and an extension cylinder 22. The extension cylinder 21 is positioned above the deck surface 1, and the extension cylinder 22 is positioned below the deck surface 1. The overall height of the extension cylinder 22 does not exceed one-third of the height of the extension cylinder 21. A support member 3 is fixed to the outside of the extension cylinder 21, and a protective plate 4 is provided on the support member 3. A pre-installation seat 5 extends from the top of the extension cylinder 21, and the diameter of the pre-installation seat 5 is larger than the diameter of the extension cylinder 21. An installation member 6 is provided between the extension cylinder 22 and the deck surface 1. The addition of the access cylinder 2 and the support member 3 at the manhole ensures the stability of the manhole and reduces direct wear and tear on the manhole from workers.
[0035] like Figure 1 and Figure 2 As shown, the outer side of the protruding cylinder 21 is a frustum-shaped cone with the diameter decreasing from top to bottom. The frustum-shaped protruding cylinder 21 facilitates the reception of the pre-mounted seat 5 at the top. The draft angle of the top of the protruding cylinder 21 does not exceed 5°. The inner diameter of the protruding cylinder 21 is not less than 600mm. The inner diameter of the protruding hole is not less than 600mm, meeting the minimum standard for manholes and ensuring that the structural dimensions on the ship meet the standards.
[0036] like Figure 2 and Figure 3 As shown, the outer wall of the protruding cylinder 21 is fixed to the support member 3. The support member 3 includes multiple triangular support plates 31, which are arranged in a circumferential array outside the protruding cylinder 21. The bottom edge of the support plate 31 is fixed to the upper surface of the deck surface 1, and the side edge of the support plate 31 is fixed to the outer wall of the protruding cylinder 21. The support plate 31 provides support for the protruding cylinder 21 and forms the base frame of the top protective plate 4, facilitating the subsequent installation of the protective plate 4.
[0037] The support component 3 also includes multiple baffles 32, which are arranged in a circumferential array outside the protruding cylinder 21. Each baffle 32 is fixed between two adjacent support plates 31, and its height does not exceed one-quarter of the height of the support plate 31. The two ends of each baffle 32 are fixed to the bottom of two adjacent support plates 31, respectively. The baffles 32 protect the bottom of the protruding cylinder 21 from external moisture erosion and also provide support to the support plates 31 to prevent them from tilting or collapsing. The baffles 32 also have inclined surfaces at both ends that mate with the sides of the support plates 31, facilitating welding operations.
[0038] like Figure 2 , Figure 3 and Figure 4As shown, a protective plate 4 parallel to the inclined surface of each adjacent support plate 31 is connected between the inclined surfaces of the two adjacent support plates 31. The protective plates 4 are arranged in an array along the circumference of the protruding cylinder 21, and several protective plates 4 are connected to cover the top of the support plate 31. The end of the protective plate 4 near the protruding cylinder 21 is arc-shaped and has a gap with the protruding cylinder 21. The end of the protective plate 4 away from the protruding cylinder 21 is also provided with multiple waist-shaped drainage holes 41, which are arranged in an array along the length of the bottom edge of the protective plate 4. The protective plate 4 covering the support plate 31 can reduce the recessed area formed by the support plate 31, the deck surface 1, and the protruding cylinder 21. The protective plate 4 forms a drainage surface along the inclined surface of the support plate 31. The top of the protective plate 4 is under the pre-installed seat 5 but does not completely close the support member 3, which facilitates the external water vapor to be discharged along the inclined surface and avoids corrosion affecting the structure of the support plate 31. The drainage holes 41 at the bottom of the protective plate 4 also facilitate the discharge of water vapor at the lower surface and avoid water droplet splashing.
[0039] like Figure 2 and Figure 4 As shown, the extension tube 22 includes an integrally formed insertion tube 221 and an expansion tube 222. The expansion tube 222 is located below the insertion tube 221, and its diameter increases from top to bottom. The connection between the expansion tube 222 and the insertion tube 221 is rounded, and the height of the insertion tube 221 is less than one-third of the height of the expansion tube 222. The expansion tube 222 facilitates the guidance of workers into the manhole and reduces bumps and knocks at the manhole. The rounded transition between the expansion tube 222 and the insertion tube 221 also avoids sharp angles. The lower height of the insertion tube 221 avoids encroaching on too much of the manhole's internal space.
[0040] Multiple mounting components 6 are also provided on the outer side of the expansion cylinder 222 and the lower surface of the deck surface 1. The mounting components 6 are arranged in a circumferential array on the outer side of the expansion cylinder 222. Each mounting component 6 includes a fixing plate 61, a connecting plate 62, and a mounting plate 63. The fixing plate 61 is fixed to the bottom of the deck surface 1, and the mounting plate 63 is fixed to the outer wall of the expansion cylinder 222. The connecting plate 62 is U-shaped with its opening away from the center of the expansion cylinder 222. The upper side of the connecting plate 62 is fixed to the fixing plate 61, and the lower side is welded to the mounting plate 63. The mounting components 6 form a relatively closed but not completely closed structure in the lower part of the deck surface 1 and the expansion cylinder 222. On the one hand, it provides a buffer when workers bump into the expansion cylinder 222 to avoid damage to the overall structure of the expansion cylinder 222 or excessive local deformation. On the other hand, it provides support for the expansion cylinder 222 to prevent its bending amplitude from encroaching on the internal space of the manhole.
[0041] like Figure 1 , Figure 2 and Figure 3As shown, the pre-installed base 5 is coaxially arranged with the extension cylinder 21 and includes a base body 51 and a washer 52. The base body 51 is welded and fixed to the top of the extension cylinder 21, and the washer 52 is fixed to the inner side wall of the base body 51. A reserved hole 511 is provided through the base body 51 near the outer periphery. The reserved hole 511 is a frustum-shaped hole with a diameter decreasing from top to bottom. The pre-installed base 5 is set to reserve a corresponding installation position for the manhole cover. The washer 52 will engage with the manhole cover to ensure a seal at the manhole. The reserved hole 511 facilitates the bolt installation of the manhole cover.
[0042] The working principle and usage of the protective structure at the manhole of the ship's hull that facilitates painting: A passage hole 11 is opened on the deck surface 1 and an inlet / outlet cylinder 2 is installed at the passage hole 11. The inlet / outlet cylinder 2 is divided into two parts: an extension cylinder 21 and an extension cylinder 22. A support plate 31 and a water baffle 32 are installed on the outside of the extension cylinder 21, and a protective plate 4 is covered on the support plate 31 and the water baffle 32. An installation component 6 is installed between the extension cylinder 22 and the deck surface 1.
[0043] The foregoing description illustrates and describes preferred embodiments of the present invention. As previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or related technical or knowledge. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.
Claims
1. A protective structure for facilitating painting at a manhole of a ship, characterized by, The deck surface (1) is provided with a through hole (11), and the access cylinder (2) is concentrically arranged with the through hole (11) and has a vertical axis, and the outer wall of the access cylinder (2) is fixed to the inner wall of the through hole (11), and the access cylinder (2) comprises an integral extension cylinder (21) and an extension cylinder (22), the extension cylinder (21) is arranged above the deck surface (1), the extension cylinder (22) is arranged below the deck surface (1), the height of the extension cylinder (22) is not more than one third of the height of the extension cylinder (21), the outer side of the extension cylinder (21) is fixed with a support (3), the support (3) is provided with a protective plate (4), the top of the extension cylinder (21) extends a preloading seat (5), and the diameter of the preloading seat (5) is greater than that of the extension cylinder (21).
2. A protective structure for facilitating painting at a manhole of a ship's hull according to claim 1, characterized in that, The outer side of the extension cylinder (21) is a circular truncated cone with a diameter decreasing from top to bottom, and the inner diameter of the extension cylinder (21) is not less than 600mm.
3. A protective structure for facilitating painting at a manhole of a ship's hull according to claim 2, characterized in that, The outer wall of the extension cylinder (21) is fixed to the support (3), the support (3) comprises a plurality of triangular support plates (31), the support plates (31) are arranged in a circumferential array outside the extension cylinder (21), the bottom edge of the support plate (31) is fixed to the upper surface of the deck surface (1), and the side edge of the support plate (31) is fixed to the outer wall of the extension cylinder (21).
4. A protective structure for facilitating painting at a manhole of a ship's hull according to claim 3, characterized in that, The support (3) further comprises a plurality of water baffle plates (32), the water baffle plates (32) are arranged in a circumferential array outside the extension cylinder (21), the water baffle plates (32) are fixed between two adjacent support plates (31) and have a height not more than one fourth of the height of the support plate (31), the two ends of the water baffle plate (32) are respectively fixed to the adjacent two support plates (31) close to the bottom, and the two ends of the water baffle plate (32) are further provided with inclined surfaces matched with the side edges of the support plates (31).
5. A protective structure for facilitating painting at a manhole of a ship's hull according to claim 4, characterized in that, The adjacent two support plates (31) are further connected by protective plates (4) parallel to the inclined surfaces of the support plates (31), the protective plates (4) are arranged in a circumferential array along the extension cylinder (21) and are connected to cover the top ends of the support plates (31), the protective plate (4) close to one end of the extension cylinder (21) is arc-shaped and has a gap with the extension cylinder (21), and a plurality of waist-shaped drainage holes (41) are formed in the protective plate (4) away from the extension cylinder (21).
6. A protective structure for facilitating painting at a manhole of a ship according to claim 1, wherein The extension cylinder (22) comprises an integral extension cylinder (221) and an extension cylinder (222), the extension cylinder (222) is arranged below the extension cylinder (221) and has a diameter increasing from top to bottom, the extension cylinder (222) is connected to the extension cylinder (221) in a smooth transition, and the height of the extension cylinder (221) is less than one third of the height of the extension cylinder (222).
7. A protective structure for facilitating painting at a manhole of a ship's hull according to claim 6, characterized in that, The outer expansion cylinder (222) outer side surface and deck surface (1) lower surface support are further provided with a plurality of mounting (6), the mounting (6) circumferential array is arranged outside the outer expansion cylinder (222), the mounting (6) includes fixed plate (61), connecting plate (62) and mounting plate (63), the fixed plate (61) is fixed at the bottom of deck surface (1), the mounting plate (63) is fixed on the outer side wall of the outer expansion cylinder (222), the connecting plate (62) is U-shaped with opening away from the center of the outer expansion cylinder (222), one side edge of the connecting plate (62) is fixed with the fixed plate (61), and the other side edge is welded with the mounting plate (63).
8. A protective structure for facilitating painting at a manhole of a ship's hull according to claim 1, wherein The preloading seat (5) is coaxially arranged with the extension cylinder (21) and includes a seat body (51) and a gasket (52), the seat body (51) is welded and fixed at the top of the extension cylinder (21), the gasket (52) is fixed on the inner side wall of the seat body (51), the seat body (51) is provided with a reserved hole (511) penetratingly arranged near the outer periphery, and the reserved hole (511) is in the shape of a circular truncated cone with the diameter decreasing from top to bottom.