Safety device for removable hatch cover of a ship and ship

Abstract

This invention belongs to the field of marine technology and discloses a safety protection device and vessel for a detachable marine hatch cover. It includes a connecting mechanism, a connector, and two plates, which are connected to the connector via the connecting mechanism. The connecting mechanism includes a hinge assembly, a locking pin, and a locking slider. The hinge assembly includes a hinge male connector and a hinge female connector that are hinged together. The hinge male connector is connected to one plate, and the hinge female connector is connected to the second part. The locking pin is fixed to the hinge male connector. The locking slider is tubular, sleeved, and slidably connected to the hinge assembly. The tube wall of the locking slider has an L-shaped guide groove, which includes a first groove extending along the length of the locking slider and a second groove extending circumferentially around the locking slider. The locking pin passes through the guide groove, allowing the locking slider to rotate relative to the hinge assembly, positioning the locking pin in the first and second grooves. This design ensures personnel safety and provides quick and convenient installation and storage.

Description

Technical Field

[0001] This invention relates to the field of marine technology, and in particular to a safety protection device for a detachable marine hatch cover and a ship. Background Technology

[0002] Ship interior passageways typically feature recessed hatch covers leading to lower deck compartments, facilitating vertical passage for personnel. These hatch covers are normally closed, flush with the deck surface, and considered part of the passageway deck. This prevents personnel from being obstructed by protruding structures during normal passage, ensuring both smooth passage and personnel safety. Once personnel enter the compartment, the hatch covers are opened. To maintain personnel safety and communication with the outside world, the hatch covers remain open throughout the passageway operation period, creating a 600mm x 600mm square opening on the passageway deck surface.

[0003] When hatch covers are open, they pose a risk of falls to other personnel passing through the passageway, and this risk persists throughout the work cycle, even with safety warnings. This risk is particularly high at night in living quarters, where the risk of falls is further increased in low-light conditions when personnel are getting up at night or changing shifts. Currently, protection is typically achieved using fixed temporary railings, with multiple railings installed on the deck to enclose the opening. However, the separate installation and storage of these multiple temporary railings makes both setup and dismantling inefficient. Summary of the Invention

[0004] The purpose of this invention is to provide a safety protection device and vessel for a detachable marine hatch cover, which can ensure personnel safety and is quick and convenient to install, arrange and store.

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

[0006] A safety protection device for a detachable marine hatch cover includes a connecting mechanism, a connector, and two plates. The connector includes a first part and two second parts, with the two second parts connected to both ends of the first part, and the first part and the second parts being arranged at an included angle. The two plates are correspondingly connected to the two second parts, and the plates and the connector are connected via the connecting mechanism. The connecting mechanism includes:

[0007] A hinge assembly includes a hinge male connector and a hinge female connector that are hinged together, the hinge male connector being connected to the plate body and the hinge female connector being connected to the second part;

[0008] A locking pin is fixed to the male hinge connector;

[0009] A locking slider, in the form of a tube, is sleeved and slidably connected to the hinge assembly; the tube wall of the locking slider is provided with an L-shaped guide groove, the guide groove including a first groove extending along the length direction of the locking slider and a second groove extending around the circumference of the locking slider; the locking pin passes through the guide groove; the locking slider can rotate relative to the hinge assembly, so that the locking pin is located in the first groove and the second groove;

[0010] In the folded state, the locking slider is located on the male hinge connector, the locking pin is located in the first groove, and the male and female hinge connectors are in the unlocked state, allowing the two pieces to be folded relative to the connector, thereby allowing the connector and the two pieces to be stacked.

[0011] In the unfolded state, the locking slider is located at the connection between the male hinge connector and the female hinge connector, the locking pin is located in the second groove, the male hinge connector and the female hinge connector are in the locked state, so that the two plates and the connector are connected in a U-shape, and the connector and the two plates are inserted into the deck.

[0012] In some embodiments, the end of the female hinge joint is provided with a first hinge portion, the first hinge portion being an arc-shaped protrusion, and the end of the male hinge joint is provided with a second hinge portion, the male hinge joint having an arc-shaped groove on the side of the second hinge portion, the first hinge portion and the second hinge portion being hinged together, and the protrusion and the groove being slidably connected.

[0013] In some embodiments, the side of the first hinge portion is provided with a first arc surface, and a first limiting surface and a second limiting surface provided on both sides of the first arc surface. The first limiting surface extends radially along the female hinge joint, and the second limiting surface extends axially along the female hinge joint. The first limiting surface and the second limiting surface are perpendicularly arranged. The end of the second hinge portion includes a second arc surface, and a third limiting surface and a fourth limiting surface provided on both sides of the second arc surface. The third limiting surface and the fourth limiting surface both extend radially along the male hinge joint and are located in the same plane. The first arc surface and the second arc surface are adapted to each other and are slidably connected. In the retracted state, the third limiting surface and the first limiting surface are limited to abutting each other. In the unfolded state, the fourth limiting surface and the second limiting surface are limited to abutting each other.

[0014] In some embodiments, the first hinge portion is provided with a limiting groove, and the second hinge portion is inserted into the limiting groove. The first hinge portion is provided with a countersunk hole on one side of the limiting groove and a threaded hole on the other side. The second hinge portion is provided with a through hole. An internal hexagon head screw passes through the countersunk hole, the through hole, and the threaded hole in sequence. The head of the internal hexagon head screw is accommodated in the countersunk hole, and the screw of the internal hexagon head screw is threadedly connected to the threaded hole, so that the first hinge portion and the second hinge portion are hinged by the internal hexagon head screw.

[0015] In some embodiments, both the female hinge connector and the male hinge connector are made of round steel and have the same diameter.

[0016] In some embodiments, the connector includes two first horizontal bars and two first vertical bars, the two first horizontal bars being arranged in parallel and spaced apart, the two first vertical bars being arranged in parallel and spaced apart, and the two first vertical bars being respectively connected to the two first horizontal bars to form the first part; the two ends of the first horizontal bars are provided with bent portions to form the second part, and one end of the first vertical bar extends out of the first horizontal bar and can be inserted into the deck; and / or, the sheet includes two second horizontal bars and two second vertical bars, the two second horizontal bars being arranged in parallel and spaced apart, the two second vertical bars being respectively connected to the two second horizontal bars, and one end of the second vertical bar extends out of the second horizontal bar and can be inserted into the deck.

[0017] In some embodiments, the deck is provided with an interface, and the ends of the first vertical bar and / or the second vertical bar are connected to a connector, which is inserted into the interface.

[0018] In some embodiments, the sheet body and the second portion are connected by at least two of the connecting mechanisms.

[0019] In some embodiments, the height of one of the second portions is greater than the height of the other second portion, and the difference between the two is the thickness of the sheet.

[0020] A vessel includes a deck and a safety protection device for a removable marine hatch cover as described in any of the preceding claims, the deck having openings and a hatch cover capable of covering the openings, the safety protection device for the removable marine hatch cover being detachably connected to the deck and surrounding the openings.

[0021] The beneficial effects of this invention are:

[0022] This invention provides a detachable marine hatch cover safety protection device and a vessel. The deck has openings with hatch covers at these openings. In one configuration, the hatch cover is opened, the safety protection device unfolds, and is inserted into the deck, surrounding the opening and forming a square protective structure around it, providing enclosure and protection for personnel. In another configuration, the hatch cover is placed over the opening, and the safety protection device is detached from the deck and stored. The device is connected to a connector via a connecting mechanism, which allows for folding and unfolding of the connector and the device. The folded safety protection device is small and easy to store, even under the bed in the cabin or attached to the wall in the passageway, facilitating storage and lightweight transport. When unfolded, the safety protection device is inserted into the deck. Because the device is U-shaped, it can be uniformly inserted into the deck, facilitating quick disassembly and deployment. With the safety device unfolded into a U-shaped structure, it can be deployed and removed with one hand when entering or exiting the cabin, making operation convenient. Therefore, the safety protection device ensures personnel safety, and its installation and storage are quick and convenient. The height of the safety protection device exceeds the leg-lifting height of personnel walking through it, preventing accidental falls and injuries caused by stepping into the opening after the hatch is opened, thus protecting personnel safety.

[0023] In the unfolded state, the locking slider is located at the connection between the male and female hinge joints, restricting their relative rotation. The locking pin is located in the second slot, keeping the male and female hinge joints locked to ensure structural stability and prevent arbitrary rotational deformation. In the retracted state, the locking slider is located on the male hinge joint, and the locking pin is located in the first slot. The male and female hinge joints are unlocked, allowing them to rotate and deform to fold the sheet and connectors relative to each other. Switching between the unfolded and retracted states is achieved by moving and rotating the locking slider, making operation convenient. Attached Figure Description

[0024] Figure 1 This is a schematic diagram illustrating the usage state of the safety protection device provided in a specific embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the safety protection device in the deployed state provided in a specific embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the storage state of the safety protection device provided in a specific embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of the sheet body provided in a specific embodiment of the present invention;

[0028] Figure 5This is a front view of the connector provided in a specific embodiment of the present invention;

[0029] Figure 6 This is a top view of the connector provided in a specific embodiment of the present invention;

[0030] Figure 7 This is a schematic diagram of the connection mechanism in the unlocked state according to a specific embodiment of the present invention;

[0031] Figure 8 This is a schematic diagram of the connection mechanism in the locked state according to a specific embodiment of the present invention;

[0032] Figure 9 This is a schematic diagram of the connecting mechanism in the storage state provided in a specific embodiment of the present invention;

[0033] Figure 10 This is a schematic diagram of a hinge female connector from one perspective, provided by a specific embodiment of the present invention;

[0034] Figure 11 This is a schematic diagram of the female hinge connector from another perspective provided by a specific embodiment of the present invention;

[0035] Figure 12 This is a schematic diagram of a hinge male connector from one perspective, provided by a specific embodiment of the present invention.

[0036] Figure 13 This is a schematic diagram of the hinge male connector from another perspective provided by a specific embodiment of the present invention;

[0037] Figure 14 This is a schematic diagram of a locking slider from one perspective, provided in a specific embodiment of the present invention;

[0038] Figure 15 This is a schematic diagram of the locking slider from another perspective provided by a specific embodiment of the present invention;

[0039] Figure 16 This is a top view of the safety protection device in its deployed state according to a specific embodiment of the present invention;

[0040] Figure 17 This is a side view of the safety protection device in its stored state according to a specific embodiment of the present invention;

[0041] Figure 18 This is a schematic diagram of the connector and interface connection provided in a specific embodiment of the present invention.

[0042] In the picture:

[0043] 1. Connecting mechanism; 11. Hinge assembly; 111. Hinge male connector; 1111. Second hinge part; 1112. Second arc surface; 1113. Third limiting surface; 1114. Fourth limiting surface; 1115. Through hole;

[0044] 112. Hinge female connector; 1121. First hinge part; 1122. First arc surface; 1123. First limiting surface; 1124. Second limiting surface; 1125. Limiting groove; 12. Locking pin; 13. Locking slider; 131. Guide groove; 132. First groove; 133. Second groove; 14. Socket head cap screw;

[0045] 2. Connector; 21. First part; 22. Second part; 23. First crossbar; 231. First extension; 24. First vertical bar; 25. Bending part;

[0046] 3. Sheet body; 31. Second horizontal bar; 311. Second extension; 32. Second vertical bar; 33. Connecting pipe;

[0047] 4. Connector;

[0048] 100, deck; 200, hatch cover; 300, interface; 400, hole. Detailed Implementation

[0049] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0050] 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.

[0051] 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.

[0052] like Figures 1-18 As shown, this embodiment provides a safety protection device for a detachable marine hatch cover, including a connecting mechanism 1, a connector 2, and two pieces 3. The connector 2 includes a first part 21 and two second parts 22. The two second parts 22 are connected to both ends of the first part 21, and the first part 21 and the second part 22 are arranged at an angle. The two pieces 3 are connected to the two second parts 22 respectively, and the pieces 3 and the connector 2 are connected through the connecting mechanism 1.

[0053] The connecting mechanism 1 includes a hinge assembly 11, a locking pin 12, and a locking slider 13. The hinge assembly 11 includes a hinge male connector 111 and a hinge female connector 112 that are hinged together. The hinge male connector 111 is connected to the plate 3, and the hinge female connector 112 is connected to the second part 22. The locking pin 12 is fixed to the hinge male connector 111. The locking slider 13 is tubular, sleeved, and slidably connected to the hinge assembly 11. The tube wall of the locking slider 13 is provided with an L-shaped guide groove 131. The guide groove 131 includes a first groove 132 extending along the length direction of the locking slider 13 and a second groove 133 extending around the circumference of the locking slider 13. The locking pin 12 passes through the guide groove 131, and the locking slider 13 can rotate relative to the hinge assembly 11 so that the locking pin 12 is located in the first groove 132 and the second groove 133.

[0054] In the folded state, the locking slider 13 is located on the male hinge connector 111, the locking pin 12 is located in the first groove 132, and the male hinge connector 111 and the female hinge connector 112 are in the unlocked state, allowing the two pieces 3 to be folded relative to the connector 2, thereby allowing the connector 2 and the two pieces 3 to be stacked. In the unfolded state, the locking slider 13 is located at the connection between the male hinge connector 111 and the female hinge connector 112, the locking pin 12 is located in the second groove 133, and the male hinge connector 111 and the female hinge connector 112 are in the locked state, allowing the two pieces 3 and the connector 2 to be connected in a U-shape, and the connector 2 and the two pieces 3 are both inserted into the deck 100.

[0055] Slide the locking slider 13 towards the female hinge connector 112 until it is in place. The locking pin 12 will then be positioned at the junction of the first groove 132 and the second groove 133. Rotate the slider clockwise to position the locking pin 12 within the second groove 133. The locking slider 13, in conjunction with the locking pin 12, locks the U-shaped assembly, forming a stable structure. When the safety device needs to be folded, rotate the locking slider 13 counterclockwise to disengage the locking pin 12. Then slide the locking slider 13 towards the male hinge connector 111 to release the locking pin 12 from the end of the first groove 132 away from the second groove 133, thus releasing the U-shaped assembly. At this point, fold one piece 3 according to the hinge's allowable angle and direction, then fold the other piece 3, forming a "three" shaped fold. This makes the device smaller and easier to carry and store in confined spaces.

[0056] like Figure 1 As shown, a hole 400 is provided on the deck 100, and a hatch cover 200 is provided at the hole 400. In one case, the hatch cover 200 is opened, the safety protection device is deployed and inserted into the deck 100, surrounding the hole 400, forming a square protective structure around the hole 400, providing enclosure and protection for personnel safety. In another case, the hatch cover 200 is placed over the hole 400, and the safety protection device is removed from the deck 100 and stored. The safety device 3 is connected to the connector 2 via the connecting mechanism 1. The connecting mechanism 1 enables the folding and unfolding of the connector 2 and the safety device 3. When folded, the safety device is small in size and easy to store, even under the bed in the living quarters or attached to the wall in the passageway, facilitating storage and lightweight transport. When unfolded, the safety device is inserted into the deck 100. Because the safety device is U-shaped, it can be uniformly inserted into the deck 100, facilitating quick disassembly and deployment. After the safety device is unfolded into a U-shaped structure, it can be deployed and removed with one hand before and after personnel enter or exit the cabin, making operation convenient. Therefore, the safety device ensures personnel safety, and installation, deployment, and storage are quick and convenient. The height of the safety device exceeds the leg-raising height of personnel walking, preventing personnel from accidentally stepping into the opening 400 of the hatch cover 200 and falling and injuring themselves, thus protecting personnel safety.

[0057] In the unfolded state, the locking slider 13 is located at the connection between the male hinge joint 111 and the female hinge joint 112, restricting their relative rotation. The locking pin 12 is located in the second groove 133, keeping the male hinge joint 111 and the female hinge joint 112 locked, ensuring structural stability and preventing arbitrary rotational deformation. In the retracted state, the locking slider 13 is located on the male hinge joint 111, and the locking pin 12 is located in the first groove 132, keeping the male hinge joint 111 and the female hinge joint 112 unlocked. The male hinge joint 111 and the female hinge joint 112 can rotate and deform to achieve relative folding of the sheet 3 and the connector 2. The guide groove 131, used in conjunction with the locking pin 12, locks and releases the hinge structure. The structure is simple, and switching between the unfolded and retracted states is achieved by moving and rotating the locking slider 13, making operation convenient.

[0058] Furthermore, safety protection devices can be equipped with reflective or fluorescent tapes at night to enhance warnings.

[0059] like Figures 4-6 As shown, the connector 2 includes two first horizontal bars 23 and two first vertical bars 24. The two first horizontal bars 23 are arranged in parallel and spaced apart, and the two first vertical bars 24 are arranged in parallel and spaced apart. The two first vertical bars 24 are respectively connected to the two first horizontal bars 23 to form a first part 21. The two ends of the first horizontal bars 23 are provided with bent portions 25 to form a second part 22. One end of the first vertical bar 24 extends out of the first horizontal bar 23 and can be inserted into the deck 100. And / or, the sheet body 3 includes two second horizontal bars 31 and two second vertical bars 32. The two second horizontal bars 31 are arranged in parallel and spaced apart, and the two second vertical bars 32 are arranged in parallel and spaced apart. The two second vertical bars 32 are respectively connected to the two second horizontal bars 31. One end of the second vertical bar 32 extends out of the second horizontal bar 31 and can be inserted into the deck 100. Both the connector 2 and the sheet body 3 are formed by overlapping the horizontal bars and vertical bars, which are lightweight and easy to operate and carry.

[0060] Optionally, the first horizontal bar 23 and the first vertical bar 24 are both round bars with equal diameters, and the second horizontal bar 31 and the second vertical bar 32 are both round bars with equal diameters.

[0061] One end of the first vertical rod 24 extends out of the first horizontal rod 23 as a support foot for the connector 2, and is used to insert into the deck 100; one end of the second vertical rod 32 extends out of the second horizontal rod 31 as a support foot for the plate 3, and is used to insert into the deck 100. The safety protection device forms a total of six support feet for insertion into the deck 100, which ensures stable installation and avoids excessive support feet affecting the ease of disassembly and assembly.

[0062] like Figure 18As shown, the deck 100 is provided with an interface 300. The ends of the first vertical rod 24 and / or the second vertical rod 32, i.e., the support legs, are connected to connectors 4. The connectors 4 are inserted into the interface 300. The connectors 4 are anti-abrasion rubber heads, used to prevent the first vertical rod 24 and / or the second vertical rod 32 from colliding and rubbing against the deck 100 or the hatch cover 200, thereby preventing damage to the paint of the deck 100 or the hatch cover 200. They also increase friction when connected to the interface 300, thus providing a stabilizing effect. Specifically, the interface 300 is located around the hole 400, and the number of interfaces 300 corresponds one-to-one with the number of connectors 4.

[0063] like Figure 4 As shown, optionally, the sheet body 3 also includes a connecting tube 33, which connects the upper second horizontal bar 31 and the outer second vertical bar 32. The connecting tube 33 is arc-shaped to eliminate right angles and prevent collisions with personnel and the environment. The second horizontal bar 31 and the second vertical bar 32 are correspondingly inserted into the two ends of the connecting tube 33 for easy connection. Further, the second horizontal bar 31 and the second vertical bar 32 are correspondingly welded to the two ends of the connecting tube 33.

[0064] Optionally, the bending angle of the bent portion 25 is 90°, that is, the first part 21 and the second part 22 are set at a 90° angle. After the sheet 3 is connected to the second part 22, the angle between the sheet 3 and the first part 21 is 90°. In other embodiments, the bending angle of the bent portion 25 can also be less than or greater than 90°, such as 80° or 100°, etc., and can be adapted according to the requirements.

[0065] Considering the requirements of the safety protection device in its folded state, the height of one second part 22, i.e., the bending part 25, is greater than the height of the other second part 22, i.e., the bending part 25, and the difference between the two is equal to the thickness of the sheet 3, so that in the folded storage state, the two sheets 3 are stacked parallel to each other. Figure 6 As shown, the height of the second part 22 on the right is less than the height of the second part 22 on the left, and the height difference is equal to the diameter of the second horizontal bar 31 and the second vertical bar 32 of the sheet 3.

[0066] The sheet 3 and the second part 22 are connected by at least two connecting mechanisms 1. By increasing the number of connecting mechanisms 1, the connection between the sheet 3 and the second part 22 becomes more reliable, and the structure becomes more stable when unfolded and folded. Figure 3 As shown, there are four connecting mechanisms 1. The plate 3 and the connector 2 are connected by two connecting mechanisms 1. Specifically, the connecting mechanism 1 is connected between the bent portion 25 of the first crossbar 23 and the second crossbar 31. Specifically, the male hinge connector 111 is connected to the second crossbar 31, and the female hinge connector 112 is connected to the bent portion 25 of the first crossbar 23.

[0067] The first horizontal bar 23 extends beyond the first vertical bar 24 at both ends and has a first extension 231. The second horizontal bar 31 extends beyond the second vertical bar 32 at its end and has a second extension 311. The hinge male connector 111 is connected to the second extension 311, and the bending part 25 is connected to the first extension 231 for easy connection.

[0068] Furthermore, the dimensions of the hole 400 or the corresponding usage requirements are adapted to adjust the lengths of the first horizontal bar 23, the first vertical bar 24, the second horizontal bar 31, and the second vertical bar 32.

[0069] Both the female hinge connector 112 and the male hinge connector 111 are made of round tubes. Furthermore, both the female hinge connector 112 and the male hinge connector 111 are made of round steel, and their diameters are equal. Their diameters are adapted to the locking slider 13, so that the locking slider 13 can be fitted in with a tight gap, and the sliding operation is smooth.

[0070] The female hinge 112 has a first hinge portion 1121 at its end, which is an arc-shaped protrusion. The male hinge 111 has a second hinge portion 1111 at its end, which is an arc-shaped groove on the side of the second hinge portion 1111. The first hinge portion 1121 and the second hinge portion 1111 are hinged together, and the protrusion and the groove are slidably connected, which serves as a guide to make the rotation more stable.

[0071] The side of the first hinge portion 1121 is provided with a first arc surface 1122, and a first limiting surface 1123 and a second limiting surface 1124 provided on both sides of the first arc surface 1122. The first limiting surface 1123 extends radially along the hinge female connector 112, and the second limiting surface 1124 extends axially along the hinge female connector 112. The first limiting surface 1123 and the second limiting surface 1124 are arranged perpendicularly. The end of the second hinge portion 1111 includes a second arc surface 1112, and a third limiting surface 1113 and a second limiting surface 1124 provided on both sides of the second arc surface 1112. The four limiting surfaces 1114, the third limiting surface 1113, and the fourth limiting surface 1114 all extend radially along the male hinge joint 111 and are located on the same plane; the first arc surface 1122 and the second arc surface 1112 are adapted to each other and slidably connected. In the folded state, the third limiting surface 1113 and the first limiting surface 1123 limit and abut, making the male hinge joint 111 and the female hinge joint 112 perpendicular; in the unfolded state, the fourth limiting surface 1114 and the second limiting surface 1124 limit and abut, making the male hinge joint 111 and the female hinge joint 112 coaxial. Through the above arrangement, a mechanical limiting structure is formed between the female hinge joint 112 and the male hinge joint 111, allowing only 90° rotation. Due to the existence of the mechanical limiting structure between the female hinge joint 112 and the male hinge joint 111, it can be quickly unfolded to form a U-shaped protective structure or quickly folded for storage.

[0072] The first hinge part 1121 is provided with a limiting groove 1125, and the second hinge part 1111 is inserted into the limiting groove 1125. The first hinge part 1121 is provided with a countersunk hole on one side of the limiting groove 1125 and a threaded hole on the other side. The second hinge part 1111 is provided with a through hole 1115. The internal hexagonal head screw 14 passes through the countersunk hole, the through hole 1115 and the threaded hole in sequence. The head of the internal hexagonal head screw 14 is accommodated in the countersunk hole. The screw of the internal hexagonal head screw 14 is threadedly connected to the threaded hole, so that the first hinge part 1121 and the second hinge part 1111 are hinged by the internal hexagonal head screw 14. With the above arrangement, it is convenient to connect and form a hinge assembly 11. Then, the locking slider 13 is fitted in, and the second groove 133 in the L-shaped guide groove 131 is kept close to the side of the hinge male connector 111. Finally, the locking pin 12 is installed at the matching position on the side of the hinge male connector 111 to form the connecting mechanism 1. The connecting mechanism 1 restricts the range of motion of the hinge assembly 11 from 90° to 180°. It can limit the hinge assembly 11 when it is unfolded to 180° and keep it in a straight line, which facilitates the quick positioning operation of the locking slider 13 and enables locking operations to be performed with one hand.

[0073] This embodiment also provides a ship, including a deck 100 and the above-mentioned removable marine hatch cover safety protection device. The deck 100 is provided with an opening 400 and a hatch cover 200 that can be placed on the opening 400. The removable marine hatch cover safety protection device is detachably connected to the deck 100 and surrounds the opening 400.

[0074] 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 can make other variations or modifications based on the above description. 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 safety protection device for a detachable marine hatch cover, characterized in that, The device includes a connecting mechanism (1), a connector (2), and two sheet bodies (3). The connector (2) includes a first part (21) and two second parts (22). The two second parts (22) are connected to both ends of the first part (21), and the first part (21) and the second parts (22) are arranged at an included angle. The two sheet bodies (3) are connected to the two second parts (22) respectively, and the sheet bodies (3) and the connector (2) are connected through the connecting mechanism (1). The connecting mechanism (1) includes: The hinge assembly (11) includes a hinge male connector (111) and a hinge female connector (112) that are hinged to each other, the hinge male connector (111) being connected to the plate (3) and the hinge female connector (112) being connected to the second part (22). A locking pin (12) is fixed to the hinge male connector (111); A locking slider (13) is tubular and is sleeved and slidably connected to the hinge assembly (11); the wall of the locking slider (13) is provided with an L-shaped guide groove (131), the guide groove (131) includes a first groove (132) extending along the length direction of the locking slider (13) and a second groove (133) extending circumferentially around the locking slider (13); the locking pin (12) passes through the guide groove (131); the locking slider (13) can rotate relative to the hinge assembly (11) so that the locking pin (12) is located in the first groove (132) and the second groove (133); In the folded state, the locking slider (13) is located on the hinge male connector (111), the locking pin (12) is located in the first groove (132), the hinge male connector (111) and the hinge female connector (112) are in the unlocked state, so that the two pieces (3) can be folded relative to the connector (2) respectively, thereby allowing the connector (2) and the two pieces (3) to be stacked; In the unfolded state, the locking slider (13) is located at the connection between the male hinge connector (111) and the female hinge connector (112), the locking pin (12) is located in the second groove (133), the male hinge connector (111) and the female hinge connector (112) are in the locked state, so that the two pieces (3) and the connector (2) are connected in a U-shape, and the connector (2) and the two pieces (3) are inserted into the deck (100).

2. The safety protection device for the detachable marine hatch cover according to claim 1, characterized in that, The female hinge connector (112) has a first hinge portion (1121) at its end, which is an arc-shaped protrusion. The male hinge connector (111) has a second hinge portion (1111) at its end, which has an arc-shaped groove on the side of the second hinge portion (1111). The first hinge portion (1121) and the second hinge portion (1111) are hinged together, and the protrusion and the groove are slidably connected.

3. The safety protection device for the detachable marine hatch cover according to claim 2, characterized in that, The first hinge portion (1121) has a first arc surface (1122) on its side, and a first limiting surface (1123) and a second limiting surface (1124) on both sides of the first arc surface (1122). The first limiting surface (1123) extends radially along the hinge female connector (112), and the second limiting surface (1124) extends axially along the hinge female connector (112). The first limiting surface (1123) and the second limiting surface (1124) are arranged perpendicularly. The end of the second hinge portion (1111) includes a second arc surface (1112) and a first limiting surface (1123) and a second limiting surface (1124) on both sides of the first arc surface (1122). The third limiting surface (1113) and the fourth limiting surface (1114) on both sides of the second arc surface (1112) are respectively. The third limiting surface (1113) and the fourth limiting surface (1114) extend radially along the male hinge joint (111) and are located on the same plane. The first arc surface (1122) and the second arc surface (1112) are adapted to each other and are slidably connected. In the stored state, the third limiting surface (1113) and the first limiting surface (1123) are limited and abutted. In the unfolded state, the fourth limiting surface (1114) and the second limiting surface (1124) are limited and abutted.

4. The safety protection device for the detachable marine hatch cover according to claim 2, characterized in that, The first hinge part (1121) is provided with a limiting groove (1125), and the second hinge part (1111) is inserted into the limiting groove (1125). The first hinge part (1121) is provided with a countersunk hole on one side of the limiting groove (1125) and a threaded hole on the other side. The second hinge part (1111) is provided with a through hole (1115). The internal hexagonal head screw (14) passes through the countersunk hole, the through hole (1115) and the threaded hole in sequence. The head of the internal hexagonal head screw (14) is accommodated in the countersunk hole. The screw of the internal hexagonal head screw (14) is threadedly connected to the threaded hole, so that the first hinge part (1121) and the second hinge part (1111) are hinged by the internal hexagonal head screw (14).

5. The safety protection device for the detachable marine hatch cover according to claim 1, characterized in that, Both the female hinge connector (112) and the male hinge connector (111) are made of round steel and have the same diameter.

6. The safety protection device for the detachable marine hatch cover according to claim 1, characterized in that, The connector (2) includes two first horizontal bars (23) and two first vertical bars (24). The two first horizontal bars (23) are arranged in parallel and spaced apart. The two first vertical bars (24) are arranged in parallel and spaced apart. The two first vertical bars (24) are respectively connected to the two first horizontal bars (23) to form the first part (21). The two ends of the first horizontal bars (23) are provided with bent portions (25) to form the second part (22). One end of the first vertical bar (24) extends out of the first horizontal bar (23) and can be inserted into the deck (100). And / or, the sheet (3) includes two second horizontal bars (31) and two second vertical bars (32). The two second horizontal bars (31) are arranged in parallel and spaced apart. The two second vertical bars (32) are arranged in parallel and spaced apart. The two second vertical bars (32) are respectively connected to the two second horizontal bars (31). One end of the second vertical bar (32) extends out of the second horizontal bar (31) and can be inserted into the deck (100).

7. The safety protection device for the detachable marine hatch cover according to claim 6, characterized in that, The deck (100) is provided with an interface (300), and the ends of the first vertical bar (24) and / or the second vertical bar (32) are connected to a connector (4), which is inserted into the interface (300).

8. The safety protection device for the detachable marine hatch cover according to claim 1, characterized in that, The sheet (3) and the second part (22) are connected by at least two of the connecting mechanisms (1).

9. The safety protection device for the detachable marine hatch cover according to any one of claims 1-8, characterized in that, The height of one of the second portions (22) is greater than the height of the other second portion (22), and the difference between the two is the thickness of the sheet (3).

10. A ship, characterized in that, The device includes a deck (100) and a safety protection device for a detachable marine hatch cover as described in any one of claims 1-9, wherein the deck (100) has an opening (400) and a hatch cover (200) capable of covering the opening (400), and the safety protection device for the detachable marine hatch cover is detachably connected to the deck (100) and surrounds the opening (400).

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