Reversible handrail structure of LNG (liquefied natural gas) transport ship header area platform

Abstract

The utility model relates to the field of shipbuilding, and provides a collapsible handrail structure of a collecting pipe area platform of an LNG (Liquefied Natural Gas) transport ship. The device is installed on the edge of a main deck of a collecting pipe area of the LNG ship and comprises a main handrail, a plurality of auxiliary handrails and a plurality of evenly-distributed vertical rod units, the bottom end of each vertical rod is provided with two hinge holes distributed up and down, the hinge holes are connected with vertical rod supports through bolts, and part of the vertical rod units comprise inclined supporting rod structures connected with the inclined supporting rod structures. The inclined supporting rod structure comprises an inclined supporting rod and a vertical supporting rod. The vertical rods are fixed to the vertical rod supports through the two bolts which are distributed up and down, the inclined supporting rod structures are installed at the positions between every two vertical rods, the handrail structure can be reinforced, damage to the vertical rods due to vibration can be effectively avoided, and safety is further improved; the whole handrail can integrally rotate relative to the vertical rod support and is flatly placed on the deck, so that the handrail can be retracted and released during hoisting work, the whole handrail does not need to be disassembled, and the passing space on the deck is not influenced.

Description

Technical Field

[0001] The utility model relates to the field of shipbuilding, in particular to a collapsible railing structure for the manifold area platform of an LNG carrier. Background Art

[0002] Railings are generally installed at the edges of the decks of container ships to ensure the safety of personnel when walking on the decks. In most areas, the railings are usually installed in a fixed manner to ensure the strength of their installation. Since pipe hoisting work needs to be carried out in the manifold area of an LNG container ship, the corresponding railings are usually installed at the edges of the corresponding decks in a movable installation manner. The vertical poles of the railings are generally installed on the bases of the vertical poles by insertion, so as to facilitate disassembly during the hoisting work. Such an installation method will cause the railings to vibrate and sway irregularly due to reasons such as wind and waves during the operation of the ship, and finally lead to damage to the railing structure and the paint on its surface, resulting in problems such as rust. In addition, the inserted installation method has an unstable structure and its safety cannot meet the requirements of shipbuilding codes. Summary of the Invention

[0003] In order to meet the requirements for the protection safety of the railings in the manifold area of container ships and facilitate disassembly during hoisting, the utility model provides a collapsible railing structure for the manifold area platform of an LNG carrier.

[0004] The technical solution adopted by the utility model is as follows:

[0005] A collapsible railing structure for the manifold area platform of an LNG carrier is installed at the edge of the main deck in the manifold area of the LNG ship, and includes a main railing, multiple secondary railings and a plurality of uniformly distributed vertical pole units. The main railing and the secondary railings are parallel and horizontally arranged. The main railing is fixedly welded to the tops of the plurality of vertical pole units. The multiple secondary railings are equally spaced in the vertical direction and are correspondingly connected to the vertical pole units. The vertical pole unit includes a vertical pole and a vertical pole support. The vertical pole is provided with equally distributed mounting holes from top to bottom, and the mounting holes correspond to the multiple secondary railings. The secondary railings pass through the mounting holes. Two articulated holes are provided at the bottom end of the vertical pole, and the articulated holes are connected to the vertical pole support by bolts. The vertical pole support is fixedly welded to the main deck in the manifold area, and one side of the vertical pole support is attached to the ship outer plate on one side of the main deck. The vertical pole support is provided with holes corresponding to the articulated holes. Some of the vertical pole units include a connected diagonal brace structure. The diagonal brace structure includes a diagonal brace and a vertical support rod. The bottom of the vertical support rod is fixedly connected to the bottom of the oil sump on the main deck through a mounting seat. One end of the diagonal brace is fixedly connected to the top of the vertical support rod by bolts, and the other end of the diagonal brace is fixedly connected to the vertical pole by bolts.

[0006] Furthermore, a support hole is provided in the middle of the vertical pole, and one end of the diagonal brace structure is fixedly connected to the support hole by bolts.

[0007] Furthermore, a grille is installed on the top of the oil sump, the top end of the support rod is flush with the grille, and a through hole is provided in the grille corresponding to the position of the support rod.

[0008] Furthermore, an open arc-shaped groove is provided at the top end of the vertical pole unit, and the outer wall of the main railing is correspondingly fitted and welded to the arc-shaped groove.

[0009] Furthermore, the secondary railing and the mounting hole of the vertical pole are fixed by welding or fixed by a pair of limiting rings distributed on both sides of the vertical pole.

[0010] Furthermore, one diagonal brace unit is connected to every two vertical pole units at intervals among multiple vertical pole units.

[0011] Furthermore, the main railing is a seamless steel pipe.

[0012] Still further, an anti-corrosion paint layer is sprayed on the outer sides of the main railing, secondary railing, vertical pole unit and diagonal brace unit.

[0013] After adopting the above technical solutions, the beneficial effects of the present utility model are as follows:

[0014] The vertical pole is fixed on the vertical pole support by two bolts distributed up and down. Compared with the insertion installation method, the main railing and the secondary railing are fixedly connected to the vertical pole by welding or limiting rings to form an integral structure. The diagonal brace structure is installed at the position of every two vertical poles, which can strengthen the railing structure, effectively avoid the damage of the vertical pole caused by vibration, and further improve safety; the vertical pole and the vertical pole support are installed by two hinge holes and bolts. When one of the bolts and the bolts connecting the diagonal brace are removed, the whole railing can rotate relative to the vertical pole support and be laid flat on the deck, realizing the retraction and deployment of the railing during hoisting work without overall disassembly; the support of the diagonal brace structure is combined with the oil sump, and the support rod is installed in the oil sump. When the railing is retracted and deployed, the diagonal brace structure can be retracted into the oil sump without affecting the passage space on the deck. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present utility model.

[0016] Figure 2 It is a three-dimensional schematic diagram of the vertical pole unit.

[0017] Figure 3 It is a structural schematic diagram of the vertical pole unit.

[0018] In the figure: vertical pole 1, main railing 2, secondary railing 3, installation hole 4, vertical pole support 5, main deck 6, ship's outer plate 7, hinge hole 8, diagonal brace 9, support pole 10, oil sump 11, grille 12. Detailed implementation manners

[0019] The following further details the detailed implementation manners of the present utility model in conjunction with the attached drawings:

[0020] As Figure 1 shown, the collapsible railing structure of the manifold area platform of the LNG carrier is installed at the edge of the main deck of the manifold area of the LNG ship. The main structure is composed of multiple vertical poles 1, main railings 2 and three secondary railings 3. The main railing 2 and the secondary railing 3 are parallel and horizontally arranged, and the main railing 2 is thicker than the secondary railing 3. The main railing 2 is made of seamless steel pipe. Arc notches matching the outer cylindrical surface of the main railing are respectively processed on the top end faces of each vertical pole 1. The main railing 2 and the arc notches of each vertical pole 1 are correspondingly matched and welded and fixed to form an integral body. A plurality of equally spaced and penetrating installation holes 4 are respectively processed on each vertical pole 1 from top to bottom. The three secondary railings 3 correspondingly pass through the installation holes 4 of each vertical pole. The secondary railing 3 and the installation hole 4 are fixed by welding, or a limiting ring is installed on the secondary railing 3. The secondary railing 3 and the two side faces of each vertical pole 1 are fixed and limited through the installation ring to realize the fixed installation of the secondary railing 3.

[0021] The bottom ends of each vertical pole 1 are respectively installed on the vertical pole supports 5. The vertical pole support 5 is of a metal block structure. The vertical pole support 5 is fixedly welded to the main deck 6 of the manifold area. One side of the vertical pole support 5 is attached to and welded and fixed to the ship's outer plate 7 on one side of the main deck 6. Two vertically distributed hinge holes 8 are provided at the bottom end of the vertical pole 1. A hole corresponding to the hinge hole is provided on the vertical pole support. The bottom of the vertical pole 1 is detachably connected to the vertical pole support 5 through two bolts. When one of the bolts is removed, the vertical pole 1 drives the entire railing to rotate around the vertical pole support 5 and be laid down on the deck plane, facilitating the hoisting in the manifold area.

[0022] As Figures 2-3 shown, some vertical poles are connected with a diagonal brace structure. Generally, a diagonal brace structure is installed every two vertical poles. The diagonal brace structure includes a diagonal brace 9 and a vertical support pole 10. The bottom of the support pole 10 is fixedly connected to the bottom of the oil sump 11 on the main deck 6 through a mounting seat. A grille 12 is installed on the top of the oil sump 11. The top end of the support pole 10 is flush with the grille 12. A through hole is provided at the position of the grille 12 corresponding to the support pole for yielding to the diagonal brace 9. One end of the diagonal brace 9 is fixedly connected to the top of the support pole 10 through a bolt, and the other end of the diagonal brace 9 is fixedly connected to the vertical pole 1 through a bolt. The support pole 10 of the diagonal brace structure is located inside the oil sump 11. When the railing is laid down, the diagonal brace 9 is disconnected from the vertical pole 1 and can be rotated and laid flat on the deck or retracted into the oil sump, without affecting the hoisting space on the deck.

[0023] In order to ensure the corrosion resistance of the railing device, an anti-corrosion paint layer is sprayed on the outer sides of the main railing 2, the secondary railing 3, the vertical rod unit 1 and the diagonal brace rod unit.

Claims

1. The reversible railing structure of the manifold area platform of the LNG carrier is installed on the edge of the main deck of the manifold area of ​​the LNG carrier, including a main railing, a plurality of secondary railings and a plurality of evenly distributed vertical pole units. The main railing is parallel to the secondary railing and arranged horizontally. The main railing is welded and fixed to the top of the plurality of vertical pole units. The plurality of secondary railings are evenly spaced in the vertical direction and are correspondingly connected to the vertical pole units. The characteristics are as follows: The upright unit includes an upright and an upright support, the upright is provided with mounting holes evenly distributed from top to bottom, the mounting holes correspond to the multiple secondary railings, and the secondary railings pass through the mounting holes; the bottom end of the upright is provided with two hinge holes distributed up and down, and the hinge holes are connected to the upright support by bolts; the upright support is fixedly welded to the main deck of the manifold area, one side of the upright support is fitted with the outer plate of the ship on one side of the main deck, and the upright support is provided with a hole corresponding to the hinge hole; some of the upright units include a diagonal brace structure, the diagonal brace structure includes a diagonal brace and a vertical support rod, the bottom of the support rod is fixedly connected to the bottom of the oil collecting tank on the main deck through a mounting seat, one end of the diagonal brace is fixedly connected to the top of the support rod by bolts, and the other end of the diagonal brace is fixedly connected to the upright by bolts.

2. The reversible railing structure of the manifold platform of the LNG carrier according to claim 1 is characterized in that: A supporting hole is provided in the middle of the vertical pole, and one end of the diagonal bracing rod structure is fixedly connected to the supporting hole by a bolt.

3. The reversible railing structure of the manifold platform of the LNG carrier according to claim 1 is characterized in that: A grille is installed on the top of the oil collecting tank, the top end of the support rod is flush with the grille, and a through hole is provided at a position of the grille corresponding to the support rod.

4. The reversible railing structure of the manifold platform of the LNG carrier according to claim 1 is characterized in that: An open arc groove is arranged at the top end of the upright pole unit, and the outer wall of the main railing is matched with the arc groove and connected by welding.

5. The reversible railing structure of the manifold platform of the LNG carrier according to claim 1 is characterized in that: The secondary railing is fixed to the mounting hole of the vertical pole by welding or by a pair of limiting rings distributed on both sides of the vertical pole.

6. The reversible railing structure of the manifold platform of the LNG carrier according to claim 1 is characterized in that: Among the plurality of vertical pole units, one diagonal bracing rod unit is connected to every two vertical pole units.

7. The reversible railing structure of the manifold platform of the LNG carrier according to claim 1 is characterized in that: The main railing is a seamless steel pipe.

8. The reversible railing structure of the manifold platform of the LNG carrier according to claim 1 is characterized in that: The outer sides of the main railing, the secondary railing, the vertical rod unit and the diagonal support rod unit are sprayed with an anti-corrosion paint layer.

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