Openable grating platform for lifting opening of engine room of LNG transport ship

Abstract

The utility model relates to the field of shipbuilding, and provides an openable grating platform for an object lifting opening of an engine room of an LNG (Liquefied Natural Gas) transport ship. Comprising a grating structure, the grating structure comprises a grating frame, a plurality of pieces of reinforcing angle steel which are evenly distributed in the longitudinal direction and the transverse direction are arranged in the grating frame, a plurality of grating plates are installed, and one side of the grating frame in the width direction is connected with the top of one side edge of an object hanging opening through a plurality of hinge structures which are evenly distributed. A plurality of handles are installed on the other side of the grating frame in the width direction. A lifting lug is arranged on the side, close to the hinge structure, of the ship body structure, a hand-drive block is installed on the lifting lug, and a steel rope of the hand-drive block is correspondingly matched with the handle. The grating platform is installed at the object hanging opening through the hinge, the grating platform can be opened in the cabin loading and unloading process through cooperation of the handle and the chain hoist, disassembly and carrying are not needed, and operation is easy.

Description

Technical Field

[0001] The utility model relates to the field of shipbuilding, in particular to an openable grille platform for a cargo hoisting opening in an engine room of an LNG transport ship. Background Art

[0002] The cargo port of the LNG ship engine room is an indispensable part of the ship. The cargo port is located on the top of the engine room. Various loading and unloading operations are usually required in the engine room, and most of the loading and unloading work is carried out from the cargo port of the engine room. In order to ensure the safety of the crew, a grille platform is usually installed at the cargo port, and the grille platform is only opened when cargo needs to be hoisted.

[0003] Conventional lifting port grille platforms are usually directly fixed at the lifting port with bolts. When lifting operations are required, the bolts are manually removed and then the lifting port grille is lifted away. Due to the large size of the grille platform, disassembly and lifting are very inconvenient, and it is easy to cause safety accidents in the narrow space of the cabin. Summary of the invention

[0004] In order to overcome the defect of the inconvenience of disassembling and hoisting of the object-hanging opening grille platform in the prior art during the cabin loading and unloading process, the utility model provides an openable grille platform for the object-hanging opening of the cabin of an LNG transport ship.

[0005] The technical solution adopted by the utility model is:

[0006] The LNG carrier engine room cargo port openable grille platform comprises a grille structure, wherein the grille structure comprises a grille frame, wherein the grille frame is a rectangular frame formed by welding angle steels, wherein a plurality of longitudinally and transversely uniformly distributed reinforcing angle steels are arranged in the grille frame, wherein both ends of the reinforcing angle steels are welded and fixed to the inner frame of the grille frame, wherein a height difference is arranged between the top surface of the reinforcing angle steels in the grille frame and the top surface of the angle steels in the rectangular frame, wherein an installation cavity is formed in the grille frame, wherein a plurality of grille plates are installed in the installation cavity, wherein the grille plates are supported on the reinforcing angle steels, and wherein the height difference between the top surface of the reinforcing angle steels in the grille frame and the top surface of the angle steels in the rectangular ... The top surface is flush with the top surface of the grating frame; one side of the grating frame in the width direction is connected to the top of one side of the hanging port through a plurality of evenly distributed hinge structures, and support blocks are respectively welded and installed on the inner walls of the other three sides of the hanging port, and the top surface of the support block is flush with the bottom surface of the grating frame and supports the grating frame; a plurality of handles are installed on the other side of the grating frame in the width direction, and a lifting ear is provided on the hull structure close to the hinge structure, and a manual hoist is installed on the lifting ear, and the steel rope of the manual hoist corresponds to the handle.

[0007] Furthermore, the hinge structure includes a pair of side ear plates arranged in parallel and an intermediate ear plate, the pair of side ear plates are fixedly welded to the edge of the top surface of the hanging opening, the intermediate ear plate is fixedly welded to the edge of the top surface of the grid frame, the intermediate ear plate is located between the pair of side ear plates, and the intermediate ear plate and the pair of side ear plates are respectively provided with semicircular grooves, each semicircular groove is respectively welded with a round tube, the intermediate ear plate is coaxial with the round tubes of the pair of side ear plates, and are fixed by bolts.

[0008] Furthermore, a gap is left between the edge of the grid frame on one side close to the side ear plate and the edge corresponding to the hanging opening.

[0009] Furthermore, the handle is a U-shaped circular tube, and the grid frame is provided with circular holes that cooperate with the two vertical parts of the handle. The two vertical parts of the handle are inserted into the corresponding circular holes. The bottom end of the vertical part of the handle is installed with a nut through an external thread, and the outer size of the nut is larger than the inner diameter of the circular hole.

[0010] Furthermore, the support blocks are channel steels, and the support blocks are evenly spaced on the inner wall of the hanging opening, and the support blocks cooperate with the inner right-angle surfaces of the angle steels of the grid frame.

[0011] Furthermore, a plurality of evenly distributed supporting angle irons are welded on the inner wall of the grid frame, and the supporting angle irons support the grid plate.

[0012] Furthermore, the four corners of the grid frame are respectively provided with 45-degree chamfers, and the outer dimensions of the grid frame are smaller than the inner hole dimensions of the hanging opening.

[0013] After adopting the above technical scheme, the beneficial effects of the utility model are as follows: by installing the grille platform at the hanging opening through a hinge, the grille platform can be opened during loading and unloading in the cabin with the help of a handle and a manual hoist, without the need for disassembly and transportation, and the operation is simple. The structural design of the hinge and the size design of the grille frame ensure that the grille platform will not interfere with the hanging opening when it is opened; the grille frame is strengthened by angle steel and supported by evenly distributed support blocks to ensure the structural stability of the grille frame and the safety of personnel during normal walking. The top surface of the grille plate is flush with the grille frame, and the handle can be inserted into the round hole to ensure the flatness of the entire grille platform and avoid obstacles when people walk by. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] Figure 2 This is the AA view.

[0016] Figure 3 It is the BB view.

[0017] Figure 4 Figure C is a detail of the hinge.

[0018] Figure 5 Open the schematic for the grid platform.

[0019] In the figure: grating frame 1, grating plate 2, lifting mouth 3, reinforcing angle steel 4, supporting angle iron 5, manual hoist 6, handle 7, side ear plate 8, middle ear plate 9, round tube 10, bolt 11, lifting ear 12, nut 13, support block 14. DETAILED DESCRIPTION

[0020] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings:

[0021] like Figure 1 As shown in the figure, the openable grille platform for the cargo lifting port of the engine room of the LNG carrier consists of three parts: the grille structure, the grille opening structure and the grille support structure. It is installed at the cargo lifting port of the engine room. When the engine room is loaded and unloaded, the grille platform is opened to open the cargo lifting port. After the loading and unloading is completed, the grille platform is closed to seal the cargo lifting port, and the grille platform can be passed by personnel.

[0022] The grid structure consists of a grid frame 1 and a grid plate 2. The grid frame 1 is a rectangular frame formed by welding angle steels, with the right-angled opening of the angle steels facing outwards, and the horizontal surface of the angle steels forming the top surface of the grid frame 1. The vertical surface of the angle steels forms the inner surface of the grid frame 1. The four corners of the grid frame 1 are respectively provided with 45-degree chamfers, corresponding to the four-corner arc chamfers of the hanging opening 3. The outer dimensions of the grid frame 1 are slightly smaller than the inner hole dimensions of the hanging opening 3.

[0023] The grid frame 1 is provided with a plurality of reinforcing angle steels 4 uniformly distributed longitudinally and transversely. The two ends of the reinforcing angle steels 4 are welded and fixed to the inner frame of the grid frame 1. There is a height difference between the top surface of the reinforcing angle steels 4 in the grid frame 1 and the top surface of the angle steels of the rectangular frame. An installation cavity is formed in the grid frame 1. The grid plate 2 is installed in the installation cavity. The grid plate 2 is supported by the reinforcing angle steels 4. The top surface of the grid plate 2 is flush with the top surface of the grid frame 1. The grid 2 is welded and fixed to the grid frame 1 and the reinforcing angle steels 4. In order to ensure the support strength of the grid plate 2, a circle of uniformly distributed supporting angle irons 5 is welded on the inner wall of the grid frame 1, and the supporting angle irons 5 are used to provide additional support for the grid plate 2.

[0024] The grille opening structure is composed of a plurality of hinge structures, a manual hoist 6 and a handle 7. One side of the grille frame 1 in the width direction is conveniently connected to the top of one side of the hanging opening 3 through a plurality of evenly distributed hinge structures. The hinge structure includes a pair of side ear plates 8 and an intermediate ear plate 9 arranged in parallel. The pair of side ear plates 8 are fixedly welded to the edge of the top surface of the hanging opening 3. The intermediate ear plate 9 is fixedly welded to the edge of the top surface of the grille frame 1. The intermediate ear plate 9 is located between the pair of side ear plates 8. Semicircular notches are respectively provided on the intermediate ear plate 9 and the pair of side ear plates 8. A round tube 10 is respectively welded to each semicircular notch. The intermediate ear plate 9 is coaxial with the round tubes of the pair of side ear plates 8, and passes through the three round tubes through a bolt 11. The bolt 11 serves as a rotation axis.

[0025] A lifting lug 12 is welded on the hull structure near the hinge structure, and a manual hoist 6 is installed through the lifting lug 12. A plurality of handles 7 are installed on the angle iron of the grid frame on the other side of the width direction of the grid frame 1. The handle 7 is a U-shaped round tube or a U-shaped bending rod. The grid frame 1 is provided with a round hole that matches the two vertical parts of the handle. The two vertical parts of the handle 7 are inserted into the corresponding round holes. The bottom end of the vertical part of the handle is installed with a nut 13 through an external thread. The outer size of the nut 13 is larger than the inner diameter of the round hole. Under normal conditions, the handle 7 is received into the grid frame 1 along the round hole due to gravity. When it needs to be opened, the handle 7 is pulled out from the grid frame 1. The nut 13 at the bottom of the handle 7 is limited by the grid frame 1, so that the handle 7 can pull the grid frame 1 to rotate along the hinge to open. The steel rope of the manual hoist 6 corresponds to the handle 7, and the grid frame 1 is opened by the manual hoist 6. A gap is left between the edge of the grid frame 1 on one side close to the side ear plate and the edge corresponding to the hanging opening 3 to avoid interference with the hanging opening during the opening process.

[0026] The grid support structure is a support block 14 welded on the inner wall of the three sides of the hanging opening except for the hinge. The support block 14 is a channel steel, and the support blocks 14 are evenly spaced on the three inner walls of the hanging opening 3. The top surface of the support block 14 is flush with the bottom surface of the grid frame 1 and supports the grid frame; the right-angled opening of the angle steel of the grid frame 1 facing downward and outward is matched with the support block 14.

Claims

1. An openable grille platform for the cargo-lifting port of the engine room of an LNG carrier includes a grille structure, wherein the grille structure includes a grille frame, wherein the grille frame is a rectangular frame formed by welding angle steels, wherein a plurality of longitudinally and transversely uniformly distributed reinforcing angle steels are arranged in the grille frame, wherein both ends of the reinforcing angle steels are welded and fixed to the inner frame of the grille frame, wherein: There is a height difference between the top surface of the reinforced angle steel in the grating frame and the top surface of the angle steel of the rectangular frame, and an installation cavity is formed in the grating frame. A plurality of grating plates are installed in the installation cavity. The grating plates are supported by the reinforced angle steel, and the top surface of the grating plates is flush with the top surface of the grating frame. One side of the grating frame in the width direction is connected to the top of one side of the hanging port through a plurality of evenly distributed hinge structures, and support blocks are welded and installed on the inner walls of the other three sides of the hanging port, respectively. The top surface of the support block is flush with the bottom surface of the grating frame and supports the grating frame. A plurality of handles are installed on the other side of the grating frame in the width direction, and a lifting ear is provided on the hull structure close to the hinge structure. A manual hoist is installed on the lifting ear, and the steel rope of the manual hoist corresponds to the handle.

2. The openable grille platform for cargo-hanging opening of engine room of LNG carrier according to claim 1 is characterized in that: The hinge structure includes a pair of side ear plates arranged in parallel and an intermediate ear plate. The pair of side ear plates are fixedly welded to the edge of the top surface of the hanging opening, the intermediate ear plate is fixedly welded to the edge of the top surface of the grid frame, the intermediate ear plate is located between the pair of side ear plates, and the intermediate ear plate and the pair of side ear plates are respectively provided with semicircular notches, each semicircular notch is respectively welded with a round tube, the intermediate ear plate is coaxial with the round tubes of the pair of side ear plates, and are fixed by bolts.

3. The openable grille platform for cargo-hanging opening of engine room of LNG carrier according to claim 2 is characterized in that: A gap is left between the edge of the grid frame on one side close to the side ear plate and the edge corresponding to the hanging opening.

4. The openable grille platform for cargo-hanging opening of engine room of LNG carrier according to claim 1 is characterized in that: The handle is a U-shaped circular tube, and a circular hole matching with two vertical parts of the handle is provided on the grid frame. The two vertical parts of the handle are inserted into the corresponding circular holes. A nut is installed at the bottom end of the vertical part of the handle through an external thread, and the outer dimension of the nut is larger than the inner diameter of the circular hole.

5. The openable grille platform for cargo lifting opening in engine room of LNG carrier according to claim 1 is characterized in that: The support blocks are channel steels, which are evenly spaced on the inner wall of the object-hanging opening, and are matched with the inner right-angle surfaces of the angle steels of the grid frame.

6. The openable grille platform for cargo-hanging openings in the engine room of an LNG carrier according to claim 1 is characterized in that: A plurality of evenly distributed supporting angle irons are welded on the inner wall of the grid frame, and the supporting angle irons support the grid plate.

7. The openable grille platform for cargo-hanging openings in the engine room of an LNG carrier according to claim 1, characterized in that: The four corners of the grid frame are respectively provided with 45-degree chamfers, and the outer dimensions of the grid frame are smaller than the inner hole dimensions of the hanging opening.

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