A marine manhole cover

Abstract

The utility model provides a kind of marine flip type manhole cover, it is related to manhole cover technical field, for installing the manhole position of ship body, this flip type manhole cover includes: frame body;Cover, the side of cover is hinged connection with the side of frame body, the circumferential side of cover is detachably connected with the circumferential side of frame body, cover includes two cover plates, the side of two cover plates is equipped with straight line edge, and the straight line edge of two cover plates is hinged connection;At least two first sealing strips, the bottom surface of each cover plate is connected at least one first sealing strip along the edge direction away from straight line edge;Second sealing strip, the straight line edge of one of two cover plates is connected second sealing strip;Cover is extremely convenient when opening and closing operation, saves manpower, improves the security and convenience of operation, while two cover plates can be folded together, the surface area of cover will reduce half, folding state can avoid space interference, can leave enough space for the equipment and passage beside.

Description

Technical Field

[0001] This utility model belongs to the field of manhole cover technology, and more specifically, relates to a marine flip-top manhole cover. Background Technology

[0002] As vital transportation and logistics vehicles, the protection of all compartments (especially watertight compartments) on ships is of paramount importance. During ship construction and operation, manhole covers are crucial equipment for ensuring the watertightness of compartments and facilitating personnel access. Traditional manhole covers designed according to the CB / T 19-2001 standard employ a split structure, with the cover body completely separated from the frame, making opening and closing operations extremely inconvenient.

[0003] Taking the BA800×600-12 type manhole cover of CB / T 4392-2014 standard as an example, the cover body (12mm thick) needs to be moved after the bolts are completely removed, with a single piece weighing up to 52kg, resulting in a significant operational load. For large ships, the cover body weight can reach 80kg, posing a serious challenge to the efficiency and safety of manual handling. Furthermore, existing manhole covers require additional safe storage space after opening, and on some ships, they may interfere with other equipment on board and obstruct passage, posing a significant challenge in the confined space environment of a ship. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by providing a marine flip-top manhole cover. This solves the problems mentioned in the background art, where existing manhole covers have a split structure, making opening and closing operations extremely inconvenient. Furthermore, existing manhole covers occupy a large space when opened, which can easily interfere with other equipment and obstruct passage.

[0005] To achieve the above objectives, this utility model provides a marine flip-top manhole cover for installation at the manhole location on the hull. The flip-top manhole cover includes:

[0006] Frame;

[0007] The cover body has one side hinged to one side of the frame body, and the periphery of the cover body is detachably connected to the periphery of the frame body. The cover body includes two cover plates, one side of each cover plate has a straight edge, and the straight edges of the two cover plates are hinged together.

[0008] At least two first sealing strips, with at least one first sealing strip connected to the bottom surface of each cover plate along the edge direction away from the straight side;

[0009] The second sealing strip is connected to the straight edge of one of the two cover plates.

[0010] Preferably, the marine flip-top manhole cover includes a plurality of fasteners, and the periphery of the cover body is connected to the periphery of the frame body by the plurality of fasteners.

[0011] Preferably, one side of the cover is connected to one side of the frame via a first hinge.

[0012] Preferably, the straight edges of the two cover plates are connected by a second hinge.

[0013] Preferably, the bottom surface of the cover plate is provided with a sealing groove along the edge direction away from the straight side, and the first sealing strip is embedded in the sealing groove.

[0014] Preferably, the fastener comprises:

[0015] A nut is provided on the frame, and the nut is connected in the mounting groove.

[0016] A bolt is provided in the cover, and the bolt passes through the through hole for threaded connection with the nut.

[0017] A gasket, which is fitted onto the bolt and positioned between the nut of the bolt and the top surface of the cover.

[0018] Preferably, the first hinge member includes:

[0019] Two bearing supports, one end of which is connected at a distance to one side of the frame;

[0020] Two shaft supports, one end of which is spaced apart and connected to one side of the cover;

[0021] Two rolling bearings are respectively disposed on the other end of the two bearing supports;

[0022] The shaft has two ends connected to the inner rings of the two rolling bearings, and the other ends of the two shaft supports are connected to the shaft.

[0023] Preferably, the second hinge is a hinge.

[0024] Preferably, the thickness of the first sealing strip is greater than the depth of the sealing groove, and one side of the second sealing strip is on the same plane as the side of the first sealing strip away from the sealing groove.

[0025] Preferably, the marine flip-top manhole cover further includes two handles, which are respectively hinged to the two cover plates.

[0026] This utility model provides a marine flip-top manhole cover, the advantages of which are as follows: one side of the cover body is hinged to one side of the frame body. When opening the cover, it is only necessary to disassemble the periphery of the cover body from the periphery of the frame body to open the cover, eliminating the need for manual handling. This makes opening and closing operations extremely convenient, saving manpower and improving the safety and convenience of operation. The cover body of the flip-top manhole cover includes two cover plates, the straight edges of which are hinged together. When open, the two cover plates can be folded together, reducing the surface area of ​​the cover body by half. The folded state avoids spatial interference and leaves sufficient space for adjacent equipment and passageways. When closed, the two cover plates are unfolded, and the straight edges of the two cover plates can clamp the second sealing strip. When the cover body is attached to the frame body, the cover body and the frame body can clamp the first sealing strip, achieving a seal between the manhole cover and the manhole.

[0027] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0028] The above and other objects, features and advantages of the present invention will become more apparent from the accompanying drawings, in which like reference numerals generally represent like parts.

[0029] Figure 1 A top view of a marine flip-top manhole cover according to an embodiment of the present invention is shown.

[0030] Figure 2 A schematic diagram of the closing structure of a marine flip-top manhole cover according to an embodiment of the present invention is shown.

[0031] Figure 3 A schematic diagram of the opening structure of a marine flip-top manhole cover according to an embodiment of the present invention is shown.

[0032] Figure 4 A bottom view of the cover structure of a marine flip-top manhole cover according to an embodiment of the present invention is shown.

[0033] Figure 5 A top view of the frame structure of a marine flip-top manhole cover according to an embodiment of the present invention is shown.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Frame; 2. Cover; 21. Cover plate; 3. First sealing strip; 4. Second sealing strip; 5. Fastener; 51. Nut; 52. Bolt; 53. Through hole; 54. Gasket; 6. First hinge; 61. Bearing support; 62. Shaft support; 63. Rolling bearing; 64. Shaft; 7. Second hinge; 8. Sealing groove; 9. Fixing rod; 10. Handle. Detailed Implementation

[0036] Preferred embodiments of the present invention will now be described in more detail. While preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0037] like Figures 1-3 As shown, this utility model provides a marine flip-top manhole cover for installation at the manhole location on the hull. The flip-top manhole cover includes:

[0038] Frame 1;

[0039] The cover 2 has one side hinged to one side of the frame 1, and the periphery of the cover 2 is detachably connected to the periphery of the frame 1. The cover 2 includes two cover plates 21, one side of each cover plate 21 is provided with a straight edge, and the straight edges of the two cover plates 21 are hinged together.

[0040] At least two first sealing strips 3, with at least one first sealing strip 3 connected to the bottom surface of each cover plate 2 along the edge direction away from the straight edge;

[0041] The second sealing strip 4 is connected to the straight edge of one of the two cover plates 21.

[0042] Specifically, to address the problems of existing manhole covers using a split structure, which is extremely inconvenient to open and close, and occupying a large space when open, easily interfering with other equipment and obstructing passage, this application provides a marine flip-top manhole cover. One side of the cover body 2 is hinged to one side of the frame 1. To open the cover body 2, simply detach the periphery of the cover body 2 from the periphery of the frame 1, and the cover body 2 can be flipped open without manual handling. This greatly facilitates opening and closing operations and saves manpower. The flip-top manhole cover improves the safety and convenience of operation. The cover body 2 includes two cover plates 21, which are hinged together on their straight edges. When open, the two cover plates 21 can be folded together, reducing the surface area of ​​the cover body 2 by half. The folded state avoids spatial interference and leaves enough space for adjacent equipment and passageways. When closed, the two cover plates 21 are unfolded, and their straight edges can clamp the second sealing strip 4. When the cover body 2 is attached to the frame 1, the cover body 2 and the frame 1 can clamp the first sealing strip 3, thus achieving a seal between the manhole cover and the manhole.

[0043] Preferably, the marine flip-top manhole cover includes a plurality of fasteners 5, and the periphery of the cover body 2 is connected to the periphery of the frame body 1 by the plurality of fasteners 5.

[0044] Specifically, the fasteners 5 on one side of the cover 2 are symmetrically arranged with the fasteners 5 on the other side.

[0045] Preferably, one side of the cover 2 is connected to one side of the frame 1 via a first hinge 6.

[0046] Both the cover 2 and the frame 1 are elliptical in shape, and the long side of the cover 2 is connected to the long side of the frame 1 by the first hinge 6.

[0047] Preferably, the straight edges of the two cover plates 21 are connected by a second hinge 7.

[0048] like Figure 4 As shown, preferably, the bottom surface of the cover plate 21 is provided with a sealing groove 8 along the edge direction away from the straight edge, and the first sealing strip 3 is embedded in the sealing groove 8.

[0049] like Figure 4 and Figure 5 As shown, preferably, the fastener 5 includes:

[0050] Nut 51, the frame 1 is provided with a mounting groove, and nut 51 is connected in the mounting groove;

[0051] Bolt 52, the cover body 2 has a through hole 53, the bolt 52 passes through the through hole 53 for threaded connection with nut 51;

[0052] Washer 54 is fitted onto bolt 52 and is positioned between the nut of bolt 52 and the top surface of cover 2.

[0053] Specifically, nut 51 is a stainless steel nut, bolt 52 is a stainless steel bolt, and washer 54 is a stainless steel washer. When the manhole cover needs to be closed, cover 2 is placed on frame 1, and bolt 52 is threaded through the through hole 53 on cover 2 and threaded to nut 51 on frame 1 to firmly fix cover 2 to frame 1 and ensure water tightness.

[0054] Preferably, when the two cover plates 21 are folded together, since the fasteners 5 on one side of the cover body 2 are symmetrically arranged with the fasteners 5 on the other side, each through hole 53 on one side is connected to each through hole 53 on the other side. At this time, in order to prevent the two cover plates 21 from opening, the two connected through holes 53 can be connected together by bolts 52 and nuts 51.

[0055] Preferably, the first hinge member 6 includes:

[0056] Two bearing supports 61, one end of each bearing support 61 is connected at a distance to one side of the frame 1;

[0057] Two shaft support bodies 62, one end of each shaft support body 62 is connected at a distance to one side of the cover body 2;

[0058] Two rolling bearings 63 are respectively mounted on the other end of two bearing supports 61;

[0059] The shaft 64 has two ends connected to the inner rings of two rolling bearings 63, and the other ends of two shaft supports 62 are connected to the shaft 64.

[0060] Specifically, by setting the rolling bearing 63, the frictional force when the cover 2 rotates around the shaft 64 can be reduced, making the opening and closing process smoother.

[0061] Preferably, the second hinge 7 is a hinge.

[0062] Preferably, the thickness of the first sealing strip 3 is greater than the depth of the sealing groove 8, and one side of the second sealing strip 4 is on the same plane as the side of the first sealing strip 3 away from the sealing groove 8.

[0063] Specifically, both the first sealing strip 3 and the second sealing strip 4 are rubber sealing strips. Rubber sealing strips have good elasticity and sealing performance, which can effectively prevent seawater or other liquids from entering the cabin of the ship and ensure the watertight performance of the cabin.

[0064] The difference between the thickness of the first sealing strip 3 and the depth of the sealing groove 8 is 2-2.5mm. One side of the second sealing strip 4 is on the same plane as one side of the first sealing strip 3. In this way, when the cover 2 is attached and fixed to the frame 1, the first sealing strip 3 and the second sealing strip 4 will be subjected to a certain amount of compression, thereby further improving the sealing effect.

[0065] Preferably, the marine flip-top manhole cover also includes two handles 10, which are respectively hinged to two cover plates 21.

[0066] Specifically, the handle 10 is designed to facilitate the operator to flip the cover 2, while the hinge design allows the handle 10 to be flipped and attached to the top surface of the cover 2 when not in use, thus avoiding taking up space or obstructing personnel.

[0067] Preferably, the marine flip-top manhole cover also includes two fixing rods 9, each fixing rod 9 having two mounting holes, and each cover plate 21 having two locking bolts on its top surface. The two mounting holes of the fixing rods 9 are respectively used to fit onto the locking bolts of the two cover plates 21, and the locking bolts are used to connect with the locking nuts by threads.

[0068] Specifically, when the two cover plates 21 are unfolded, they are fixed by the fixing rod 9 to ensure that the two cover plates 21 are on the same plane. When the two cover plates 21 are folded, the locking nut needs to be unscrewed.

[0069] In summary, when implementing the marine flip-top manhole cover of this utility model, to open the cover 2, simply remove the fasteners 5 on the periphery of the cover 2 and the periphery of the manhole cover, and the cover 2 can be flipped open without manual handling. It is extremely convenient to open and close, completely eliminating the manual handling process and enabling labor-saving operation by a single person. Furthermore, when opening, the two cover plates 21 can be folded together, reducing the surface area of ​​the cover 2 by half. The folded state avoids spatial interference and leaves sufficient space for adjacent equipment and passageways. When closing, the two cover plates 21 are unfolded, and the straight edges of the two cover plates 21 can clamp the second sealing strip 4. When the cover 2 is attached to the frame 1, the cover 2 and the frame 1 can clamp the first sealing strip 3, achieving a seal between the manhole cover and the manhole.

[0070] This flip-top manhole cover solves the problem that when the manhole cover is installed on a vertical bulkhead, the opening and closing operation requires multiple people to work together, which leads to a significant increase in labor costs. It also solves the problem that there is a risk of slippage and falling during the lifting and carrying of the heavy cover, which may injure personnel's hands and feet. Furthermore, it solves the problem that when closing, it is sometimes necessary to make repeated adjustments to ensure that the through hole of the cover 2 is precisely aligned with the bolt hole of the frame 1, which is time-consuming and laborious.

[0071] The flip-top manhole cover passed the water tightness test. The test requirements were as follows: the manhole cover was installed on the simulated cabin wall, and the cover was flushed with water for 5 minutes using a nozzle with a diameter of not less than 12 mm, a pressure of not less than 0.2 MPa at the nozzle, and a water flushing distance of not more than 1.5 m. After the test, there was no visible leakage at the joint surface between the seal and the cover and frame.

[0072] This flip-top manhole cover is not limited to specific types of ships and can be widely used in different compartments of various types of ships such as cargo ships, passenger ships, fishing boats, and engineering vessels, thus having good prospects for promotion and application.

[0073] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A marine flip-top manhole cover, used for installation at the manhole location on the hull of a ship, characterized in that, The flip-top manhole cover includes: Frame; The cover body has one side hinged to one side of the frame body, and the periphery of the cover body is detachably connected to the periphery of the frame body. The cover body includes two cover plates, one side of each cover plate has a straight edge, and the straight edges of the two cover plates are hinged together. At least two first sealing strips, with at least one first sealing strip connected to the bottom surface of each cover plate along the edge direction away from the straight side; The second sealing strip is connected to the straight edge of one of the two cover plates.

2. A marine flip-top manhole cover according to claim 1, characterized in that, The marine flip-top manhole cover includes multiple fasteners, and the periphery of the cover body is connected to the periphery of the frame body through the multiple fasteners.

3. A marine flip-top manhole cover according to claim 1, characterized in that, One side of the cover is connected to one side of the frame via a first hinge.

4. A marine flip-top manhole cover according to claim 1, characterized in that, The straight edges of the two cover plates are connected by a second hinge.

5. A marine flip-top manhole cover according to claim 1, characterized in that, The bottom surface of the cover plate is provided with a sealing groove along the edge direction away from the straight side, and the first sealing strip is embedded in the sealing groove.

6. A marine flip-top manhole cover according to claim 2, characterized in that, The fasteners include: A nut is provided on the frame, and the nut is connected in the mounting groove. A bolt is provided in the cover, and the bolt passes through the through hole for threaded connection with the nut. A gasket, which is fitted onto the bolt and positioned between the nut of the bolt and the top surface of the cover.

7. A marine flip-top manhole cover according to claim 3, characterized in that, The first hinge member includes: Two bearing supports, one end of which is connected at a distance to one side of the frame; Two shaft supports, one end of which is spaced apart and connected to one side of the cover; Two rolling bearings are respectively disposed on the other end of the two bearing supports; The shaft has two ends connected to the inner rings of the two rolling bearings, and the other ends of the two shaft supports are connected to the shaft.

8. A marine flip-top manhole cover according to claim 4, characterized in that, The second hinge is a hinge.

9. A marine flip-top manhole cover according to claim 5, characterized in that, The thickness of the first sealing strip is greater than the depth of the sealing groove, and one side of the second sealing strip is on the same plane as the side of the first sealing strip away from the sealing groove.

10. A marine flip-top manhole cover according to claim 1, characterized in that, The marine flip-top manhole cover also includes two handles, which are respectively hinged to the two cover plates.

Images