Flush hatch cover

Abstract

The present application relates to the technical fields of shipbuilding, and discloses a flat hatch cover for plugging an opening on a ship deck, the flat hatch cover comprising a cover plate, the cover plate being capable of being arranged on the ship deck and plugging the opening, a plurality of sets of locking devices being circumferentially arranged at the bottom of the cover plate, the locking devices being configured to abut against or be separated from the bottom of the deck to lock or unlock the cover plate with the deck. The cover plate of the flat hatch cover is arranged on the ship deck and plugs the opening, the bottom of the deck is provided with the locking devices, the locking devices are capable of abutting against or being separated from the bottom of the deck to lock or unlock the cover plate with the deck, the bottom of the cover plate is locked with the deck through the locking devices, the unevenness of the top surface of the cover plate is avoided, and the passing of personnel is not hindered.

Description

Technical Field

[0001] This invention relates to the field of shipbuilding technology, and in particular to a flat hatch cover. Background Technology

[0002] Ship decks are typically designed with large openings for equipment to be hoisted directly out of the hold during dismantling and repair. These openings are closed during normal ship operation, and flat hatch covers are a common outfitting device used to close these openings.

[0003] Current flat hatch covers typically use a base embedded in the deck opening, with the cover plate connected and fixed to the base by screws and nuts to seal the opening. However, since the screws are exposed outside the deck surface, after the cover plate is fixed, the screws and nuts are higher than the cover plate, and the top surface of the cover plate is uneven, obstructing the passage of personnel. Summary of the Invention

[0004] The purpose of this invention is to provide a flat hatch cover that solves the problem of uneven top surfaces of existing flat hatch covers, which obstruct personnel passage.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] The present invention provides a flat hatch cover for sealing openings on a ship deck. The flat hatch cover includes a cover plate that can be placed on the ship deck and seal the opening. A plurality of locking devices are arranged circumferentially on the bottom of the cover plate. The locking devices are configured to abut against the bottom of the deck or detach from the deck to lock or unlock the cover plate to the deck.

[0007] The flat hatch cover is installed on the ship's deck and seals the opening. A locking device is installed at the bottom of the deck. The locking device can abut against the bottom of the deck or detach from the deck to lock or unlock the cover to the deck. This achieves locking the cover to the deck at the bottom of the cover through the locking device, thereby avoiding the phenomenon of unevenness on the top surface of the cover and avoiding obstruction of personnel passage.

[0008] As a preferred embodiment of the aforementioned flat hatch cover, the locking device includes:

[0009] A clamping assembly, one end of which is hinged to the bottom of the cover plate, and the other end of which can abut against the bottom of the deck or detach from the deck;

[0010] A locking assembly hinged to the bottom of the cover plate, the locking assembly passing through the clamping assembly and rotatable relative to the clamping assembly, the locking assembly being configured to lock the clamping assembly when the clamping assembly abuts the deck, or to unlock the clamping assembly.

[0011] The locking device is hinged at one end to the bottom of the deck by a clamping component, and the other end can press against or disengage from the deck. When the clamping component presses against the deck, it locks the clamping component, thus locking the cover plate to the deck. When the locking component is unlocked, the clamping component disengages from the deck, thus unlocking the deck. The locking device enables switching between the locked and unlocked states.

[0012] As a preferred embodiment of the aforementioned flat hatch cover, the clamping assembly is provided with a guide rail, and the locking assembly passes through the guide rail and can rotate along the guide rail.

[0013] The guide rail allows the locking component to rotate along the guide rail, enabling the locking component to lock and unlock the clamping component.

[0014] As a preferred embodiment of the aforementioned flat hatch cover, the clamping assembly includes:

[0015] The abutment portion and two connecting plates are spaced apart, with one end of each connecting plate hinged to the bottom of the cover plate. The abutment portion is connected to the other end of the two connecting plates, and the two connecting plates and the abutment portion form a guide rail. The abutment portion can abut against the bottom of the deck.

[0016] The clamping assembly is hinged to the bottom of the cover plate via two connecting plates and connected to the other end of the two connecting plates via a pressing part, thereby forming a guide track for the movement of the clamping assembly between the two connecting plates and the pressing part. The pressing part can abut against the bottom of the deck. The clamping assembly has a simple structure and is easy to manufacture.

[0017] As a preferred embodiment of the aforementioned flat hatch cover, the locking assembly includes:

[0018] A screw, one end of which is hinged to the bottom of the cover plate, and the screw passes between the two connecting plates;

[0019] A nut, which is threaded onto the other end of the screw and abuts against the bottom of the two connecting plates.

[0020] The locking assembly is hinged to the bottom of the cover plate by a screw and passes through the gap between the two connecting plates. It is threaded to the other end of the screw by a nut and abuts against the bottom of the two connecting plates to lock the clamping assembly. The locking assembly has a simple structure and is easy to manufacture.

[0021] As a preferred embodiment of the aforementioned flat hatch cover, a wedge-shaped block is provided at the bottom of the deck, the thickness of the wedge-shaped block gradually decreasing along the direction close to the opening, and the locking device is able to abut against the wedge-shaped block.

[0022] The locking device abuts against the wedge block, which improves the sealing effect of the locking device on the deck and prevents gaps from forming between the locking device and the deck.

[0023] As a preferred embodiment of the above-mentioned flat hatch cover, an eye plate is provided at the bottom of the cover plate, and the locking device is installed on the eye plate.

[0024] The eyeplate is configured to provide an installation location for the locking device.

[0025] As a preferred embodiment of the above-mentioned flat hatch cover, the deck is provided with an insert groove in the circumference of the opening, the cover plate is inserted into the insert groove, and the top surface of the cover plate is flush with the top surface of the deck.

[0026] The slots on the deck allow the cover plate to be fitted into them, so that the top surface of the cover plate is flush with the top surface of the deck, thus avoiding obstruction of personnel passage.

[0027] As a preferred embodiment of the aforementioned flat hatch cover, the top surface of the cover plate is provided with at least one lifting structure.

[0028] The top surface of the cover plate is hoisted using lifting equipment to lift the cover plate, making it easy to move the cover plate.

[0029] As a preferred embodiment of the aforementioned flat hatch cover, a hoisting structure is provided at each of the four apex positions of the top surface of the cover plate.

[0030] Each of the four corners of the top surface of the cover plate is equipped with a lifting structure, which can lift the cover plate horizontally, making the movement of the cover plate more stable.

[0031] The beneficial effects of this invention are:

[0032] The invention proposes a flat hatch cover, in which the cover plate is installed on the ship's deck and seals the opening. A locking device is provided at the bottom of the deck. The locking device can abut against the bottom of the deck or detach from the deck to lock or unlock the cover plate to the deck. This achieves locking the cover plate to the deck at the bottom of the cover plate through the locking device, thereby avoiding the phenomenon of unevenness on the top surface of the cover plate and avoiding obstruction of personnel passage. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of the flat hatch cover provided by the present invention, which is installed at the opening position on the deck.

[0034] Figure 2 yes Figure 1 A sectional view along line AA.

[0035] Figure 3 This is a schematic diagram of the structure for unlocking the flat hatch cover and the deck provided by the present invention;

[0036] Figure 4 This is a schematic diagram of the structure of the clamping assembly provided by the present invention. Figure 1 ;

[0037] Figure 5 This is a schematic diagram of the structure of the clamping assembly provided by the present invention. Figure 2 ;

[0038] Figure 6 yes Figure 1 A cross-sectional view along line BB.

[0039] In the picture:

[0040] 1. Cover plate;

[0041] 2. Locking device; 21. Pressing assembly; 211. Abutment part; 212. Connecting plate; 214. Guide rail; 22. Locking assembly; 221. Screw; 222. Nut;

[0042] 3. Wedge block; 4. Eye plate; 5. Lifting structure;

[0043] 100. Deck; 101. Opening. Detailed Implementation

[0044] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0045] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0046] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0047] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0048] Currently, flat hatch covers are typically installed with a base embedded in the opening on the deck or bulkhead. The cover is fixed to the base by screws and nuts, with the nuts exposed on the outside of the deck surface, resulting in an uneven top surface of the cover that obstructs personnel passage.

[0049] To solve the above problems, such as Figures 1-3 As shown, this embodiment provides a flat hatch cover for sealing the opening 101 on the ship deck 100. The flat hatch cover includes a cover plate 1, which can be placed on the ship deck 100 and seal the opening 101. Multiple sets of locking devices 2 are arranged circumferentially on the bottom of the cover plate 1. The locking devices 2 can abut against the bottom of the deck 100 or detach from the deck 100 to lock or unlock the cover plate 1 to the deck 100. This achieves locking the bottom of the cover plate 1 to the deck 100 through the locking devices 2, thereby avoiding the unevenness of the top surface of the cover plate 1 and preventing obstruction of personnel passage.

[0050] In this embodiment, the opening 101 of the deck 100 is rectangular, and the cover plate 1 is also rectangular. In other embodiments, the shape of the cover plate 1 is not limited to a rectangle, but can also be circular, elliptical, etc., as long as it matches the shape of the opening 101 of the deck 100.

[0051] like Figure 1As shown, multiple sets of locking devices 2 are arranged circumferentially at the bottom of the cover plate 1. The locking devices 2 are evenly spaced along the bottom circumference of the cover plate 1, thereby ensuring a relatively uniform connection strength between the cover plate 1 and the deck 100. The specific number of sets of locking devices 2 and the spacing between adjacent sets of locking devices 2 are not specifically limited here, and can be adjusted according to requirements.

[0052] Specifically, such as Figure 2 and Figure 3 As shown, the locking device 2 includes a clamping component 21 and a locking component 22. One end of the clamping component 21 is hinged to the bottom of the cover plate 1, and the other end can abut against or detach from the bottom of the deck 100. The locking component 22 is hinged to the bottom of the cover plate 1, passes through the clamping component 21, and can rotate relative to the clamping component 21. The locking component 22 locks the clamping component 21 when it abuts against the deck 100, or unlocks the clamping component 21. The locking device 2 achieves the locking of the cover plate 1 and the deck 100 by hinged one end of the clamping component 21 to the bottom of the deck 100 and allowing the other end to abut against or detach from the deck 100, in conjunction with the locking component 22. When the clamping component 21 abuts against the deck 100, it locks the clamping component 21, thereby achieving the locking of the cover plate 1 and the deck 100. When the locking component 22 unlocks, it allows the clamping component 21 to detach from the deck 100, thereby unlocking the deck 100. This locking device 2 realizes the switching between the locked and unlocked states.

[0053] The clamping component 21 is provided with a guide rail 214, and the locking component 22 passes through the guide rail 214 and can rotate along the guide rail 214 so that the locking component 22 can lock and unlock the clamping component 21.

[0054] like Figure 4 As shown, the clamping assembly 21 is U-shaped. One end of the clamping assembly 21 is hinged to the bottom of the cover plate 1, and the other end can abut against the bottom of the deck 100. The recess between the two ends of the clamping assembly 21 can avoid the downward protruding structure of the bottom of the deck 100 and the cover plate 1, so as to avoid interference and prevent the clamping assembly 21 from failing to press against the bottom of the deck 100.

[0055] Furthermore, such as Figure 5As shown, the clamping assembly 21 includes an abutment portion 211 and two connecting plates 212. The two connecting plates 212 are spaced apart, and one end of each connecting plate 212 is hinged to the bottom of the cover plate 1. The abutment portion 211 is connected to the other end of the two connecting plates 212. The two connecting plates 212 and the abutment portion 211 form a guide rail 214, and the abutment portion 211 can abut against the bottom of the deck 100. In this embodiment, a first mounting hole is provided at the end of the connecting plate 212 connected to the abutment portion 211, and a second mounting hole is provided at the bottom of the cover plate 1. A pin passes through the first mounting hole and the second mounting hole to hinge the connecting plate 212 to the cover plate 1. In other embodiments, the hinged connection between the connecting plate 212 and the cover plate 1 is not limited to the above method and can be other methods, as long as the hinged connection between the two can be achieved.

[0056] like Figure 2 and Figure 3 As shown, the locking assembly 22 includes a screw 221 and a nut 222. One end of the screw 221 has a third mounting hole, and the bottom of the cover plate 1 has a fourth mounting hole. A pin passes through the third and fourth mounting holes to hinge the screw 221 to the bottom of the cover plate 1. The screw 221 passes between two connecting plates 212; the nut 222 is threaded to the other end of the screw 221 and abuts against the bottom of the two connecting plates 212. This locking assembly 22, hinged to the bottom of the cover plate 1 by the screw 221 and passing through the gap between the two connecting plates 212, and threaded to the other end of the screw 221 by the nut 222, abuts against the bottom of the two connecting plates 212, thus locking the clamping assembly 21. This locking assembly 22 has a simple structure and is easy to manufacture.

[0057] like Figure 2 and Figure 3 As shown, a wedge-shaped block 3 is provided at the bottom of the deck 100. The thickness of the wedge-shaped block 3 gradually decreases along the direction towards the opening 101, thereby making it easier for the locking device 2 to seal against the wedge-shaped block 3, resulting in a better sealing effect of the locking device 2 on the deck 100 and preventing gaps from forming between the locking device 2 and the deck 100. In this embodiment, the wedge-shaped block 3 is welded to the bottom of the deck 100, and the welding method makes the wedge-shaped block 3 more firmly fixed. In other embodiments, the wedge-shaped block 3 can be fixed to the bottom of the deck 100 by other fixing methods.

[0058] like Figure 2 and Figure 3 As shown, a locking plate 4 is provided at the bottom of the cover plate 1, and a locking device 2 is installed on the locking plate 4. The locking plate 4 provides an installation position for the locking device 2. In this embodiment, the locking plate 4 is welded to the bottom of the cover plate 1, and the welding method makes the locking plate 4 more secure. In other embodiments, the locking plate 4 can be fixed to the bottom of the cover plate 1 by other fixing methods.

[0059] Optionally, the deck 100 is provided with a groove (not shown in the figure) around the opening 101, and the cover plate 1 is embedded in the groove, and the top surface of the cover plate 1 is flush with the top surface of the deck 100, so as to avoid obstructing the passage of personnel.

[0060] To facilitate the lifting of the cover plate 1, at least one lifting structure 5 is provided on the top surface of the cover plate 1. The cover plate 1 is lifted using lifting equipment via the lifting structure 5, facilitating the movement of the cover plate 1. In this embodiment, as... Figure 1 As shown, a lifting structure 5 is provided at each of the four corners of the top surface of the cover plate 1. The cover plate 1 can be horizontally lifted by the four lifting structures 5, making the movement of the cover plate 1 more stable. In other embodiments, the number and position of the lifting structures 5 are not limited to the above settings, and the number and position of the lifting structures 5 can be adjusted according to the needs.

[0061] like Figure 6 As shown, the lifting structure 5 is a lifting ring structure. The lifting ring structure is easy to attach to the lifting equipment, and its installation and disassembly are relatively convenient. Moreover, the lifting ring structure is simple in structure and has low manufacturing cost. In other embodiments, the lifting structure 5 is not limited to the lifting ring structure, but can also be a hook structure, etc., as long as it is easy to attach to the lifting equipment.

[0062] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A flat hatch cover, characterized in that, For sealing openings (101) on a ship deck (100), the flat hatch cover includes a cover plate (1) that can be placed on the ship deck (100) and seal the openings (101). The bottom of the cover plate (1) is provided with a plurality of locking devices (2) in a circumferential manner. The locking devices (2) are configured to abut against the bottom of the deck (100) or disengage from the deck (100) to lock or unlock the cover plate (1) to the deck (100). The locking device (2) includes: A clamping assembly (21) has one end hinged to the bottom of the cover plate (1) and the other end capable of abutting against the bottom of the deck (100) or detaching from the deck (100). A locking assembly (22) is hinged to the bottom of the cover plate (1), the locking assembly (22) passes through the clamping assembly (21) and is rotatable relative to the clamping assembly (21), the locking assembly (22) is configured to lock the clamping assembly (21) or unlock the clamping assembly (21) when the clamping assembly (21) abuts against the deck (100); The clamping assembly (21) is provided with a guide rail (214), and the locking assembly (22) passes through the guide rail (214) and can rotate along the guide rail (214); The clamping assembly (21) includes: The abutment (211) and two connecting plates (212) are spaced apart, and one end of the two connecting plates (212) is hinged to the bottom of the cover plate (1). The abutment (211) is connected to the other end of the two connecting plates (212). The two connecting plates (212) and the abutment (211) form the guide rail (214). The abutment (211) can abut against the bottom of the deck (100).

2. The flat hatch cover according to claim 1, characterized in that, The locking component (22) includes: A screw (221), one end of which is hinged to the bottom of the cover plate (1), and the screw (221) passes between the two connecting plates (212); Nut (222), which is threaded to the other end of the screw (221) and can abut against the bottom of the two connecting plates (212).

3. The flat hatch cover according to any one of claims 1-2, characterized in that, The bottom of the deck (100) is provided with a wedge block (3), the thickness of the wedge block (3) gradually decreases along the direction close to the opening (101), and the locking device (2) can abut against the wedge block (3).

4. The flat hatch cover according to any one of claims 1-2, characterized in that, The bottom of the cover plate (1) is provided with an eye plate (4), and the locking device (2) is installed on the eye plate (4).

5. The flat hatch cover according to any one of claims 1-2, characterized in that, The deck (100) has a groove around the opening (101) and the cover plate (1) is embedded in the groove, with the top surface of the cover plate (1) flush with the top surface of the deck (100).

6. The flat hatch cover according to any one of claims 1-2, characterized in that, The top surface of the cover plate (1) is provided with a hoisting structure (5).

7. The flat hatch cover according to claim 6, characterized in that, The top surface of the cover plate (1) is provided with a plurality of the lifting structures (5).

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