CN-121990137-A - Under-deck scaffold device of ship and paving and dismantling method thereof

CN121990137ACN 121990137 ACN121990137 ACN 121990137ACN-121990137-A

Abstract

A scaffold device under a ship deck and a paving and dismantling method thereof belong to the technical field of marine scaffolds. The device takes a bulkhead pre-welded scaffold eye plate and a pre-welded scaffold hook below a deck as a stressed foundation, a scaffold horse is connected with a steel pipe jig capable of being spliced in a customized manner through bolts, an inclined hanging chain forms a bracing structure, only a foundation piece is welded, and no open fire operation is realized in the whole process. The laying follows the principle from two sides to the middle, the disassembly is carried out according to the principle of back lapping and first disassembly from the middle to two sides, and when the disassembly is carried out, the head top operation can be carried out and a safety fulcrum is arranged. The invention has the advantages of small welding damage, strong cabin adaptability, safe and efficient erection and disassembly, and reusable constructional elements, and is suitable for narrow closed cabins with high coating requirements such as methanol cabins.

Inventors

LING PENGFEI
CHENG RUI
ZHANG YANG
SHI MINGCHUAN
YU ANLONG
GAO JUNLIAN
LIAO YUNFEI
LU JINYING
Gao Sizhao
Hao Xinzhe

Assignees

大连中远海运川崎船舶工程有限公司

Dates

Publication Date: 20260508
Application Date: 20260326

Claims (8)

1. The ship under-deck scaffold device is characterized in that left scaffold eye plates (21) and right scaffold eye plates (22) are symmetrically arranged on two sides of the ship bulkhead (2), and the left scaffold eye plates (21) and the right scaffold eye plates (22) are respectively connected with a left scaffold horse (3) and a right scaffold horse (3 a) through bolts; A steel pipe jig assembly (4) is arranged between the left scaffold horse (3) and the right scaffold horse (3 a), a plurality of steel pipe jig hooks are arranged on the steel pipe jig assembly (4), and a central steel pipe jig hook (43) is arranged at the center of the assembly; the lower surface of the deck (1) is provided with a plurality of scaffold hooks corresponding to the steel pipe jig hooks, and the center of the deck is provided with a center scaffold hook (13); The center scaffold hook (13) is only connected with the center steel pipe jig hook (43) by adopting a vertical hanging chain (7 a), the other scaffold hooks are connected with two groups of steel pipe jig hooks, one group is a steel pipe jig hook corresponding to the lower part of the scaffold hook, the two groups are connected by adopting the vertical hanging chain (7 a), and the other group is a steel pipe jig hook adjacent to the steel pipe jig hook corresponding to the lower part of the scaffold hook and close to one side of the center of the ship body, and the two groups are connected by adopting an inclined hanging chain (7); the left scaffold horse (3), the right scaffold horse (3 a) and the steel tube jig assembly (4) form a supporting assembly, and the supporting assembly is paved on and bound with the fixed scaffold board (6).
2. The ship under-deck scaffold device according to claim 1, wherein the steel pipe jig assembly (4) adopts a single steel pipe mode or a symmetrical steel pipe mode, wherein the single steel pipe mode adopts a single steel pipe jig (4 a), and the symmetrical steel pipe mode adopts a left steel pipe jig (4 b) and a right steel pipe jig (4 c).
3. The ship under-deck scaffold device according to claim 2, wherein the single steel pipe jig (4 a), the left steel pipe jig (4 b) and the right steel pipe jig (4 c) are all of a structure with one end being a steel pipe jig connecting hole (401) and the other end being a steel pipe jig butt joint hole (402).
4. The marine underdeck scaffolding assembly as claimed in claim 3 wherein the steel pipe jig docking aperture (402) is a strip aperture.
5. The ship under-deck scaffold device according to claim 4, wherein when the steel pipe jig assembly (4) adopts a single steel pipe mode, a steel pipe jig connecting hole (401) at one end of the single steel pipe jig (4 a) is detachably connected with a scaffold horse connecting hole (301) of the left scaffold horse (3), and a steel pipe jig butt joint hole (402) at the other end of the single steel pipe jig (4 a) is detachably connected with a scaffold horse connecting hole (301) of the right scaffold horse (3 a).
6. The ship under-deck scaffold device according to claim 5, wherein when the steel pipe jig assembly (4) adopts a symmetrical steel pipe mode, the steel pipe jig connecting hole (401) of the left steel pipe jig (4 b) is detachably connected with the steel pipe jig connecting hole (401) of the left scaffold horse (3) and the steel pipe jig connecting hole (401) of the right steel pipe jig (4 c) and the steel pipe jig connecting hole (401) of the right scaffold horse (3 a), and the steel pipe jig butt joint holes (402) of the left steel pipe jig (4 b) and the right steel pipe jig (4 c) are detachably connected.
7. The device of claim 6, wherein a set of central steel pipe jig hooks (43) are provided at the center of the single steel pipe jig (4 a) when the steel pipe jig assembly (4) adopts a single steel pipe mode, and two sets of central steel pipe jig hooks (43) are provided at the steel pipe jig butt holes (402) of the left steel pipe jig (4 b) and the right steel pipe jig (4 c) when the steel pipe jig assembly (4) adopts a symmetrical steel pipe mode.
8. A method of laying or dismantling a marine sub-deck scaffolding arrangement according to claim 7 wherein the laying extends from the hull bulkhead to a single side of the cabin, the method of laying comprising the steps of: S1, preparing before construction, namely finishing cabin size measurement, component quality inspection, cabin oxygen measurement, explosion measurement and ventilation and operator preparation; S2, a left scaffold horse (3) is mounted on a left scaffold eye plate (21) through bolts, and a right scaffold horse (22) is mounted on a right scaffold eye plate (22) through bolts; s3, one end of the steel pipe jig assembly (4) is detachably mounted on the left scaffold (3), and the other end of the steel pipe jig assembly is detachably mounted on the right scaffold (3 a); S4, respectively paving scaffold boards (6) from two sides of a ship body to the center, paving left sides, paving the scaffold boards (6) by a left scaffold horse (3), hanging a vertical hanging chain (7 a) between a first left scaffold hook and a corresponding first left steel pipe jig hook, paving the scaffold boards (6) between the first left steel pipe jig hook and a second left steel pipe jig hook, hanging an oblique hanging chain (7) between the first left scaffold hook and the second left steel pipe jig hook after paving, and hanging a vertical hanging chain (7 a) between the second left scaffold hook and the second left steel pipe jig hook until a vertical hanging chain (7 a) is hung between the central scaffold hook (13) and the central steel pipe jig hook (43); Adopting the same laying sequence to lay the right side of the ship body, and finishing the laying of the scaffold device; the scaffold device is detached by adopting a post-lapping and pre-detaching mode, and the hanging chains, the scaffold plates, the steel pipe jigs and the scaffold horses are detached according to the reverse sequence of the scaffold device during paving.

Description

Under-deck scaffold device of ship and paving and dismantling method thereof Technical Field The invention relates to a scaffold device under a ship deck and a paving and dismantling method thereof, and belongs to the technical field of scaffolds for ships. Background In the ship construction process, when various cabins under the deck are used for coating the lower surface of the deck, scaffold erection and dismantling operations are needed, wherein the cabins under the deck of the methanol cabin have high requirements on the coating quality of the surface of the ship body, and the working space in the cabin is limited. The operation scene not only requires the scaffold to have enough structural stability to ensure the safety of high-altitude operation, but also provides strict requirements for the hull structure and the surface coating damage degree of the scaffold after erection and dismantling, and needs to furthest reduce the repair work such as later polishing, repair coating and the like, and simultaneously requires the dismantling process to adapt to the narrow operation space under the deck, thereby reducing the safety risk of the dismantling operation. At present, a traditional mode of welding PIECE under a deck and hanging a mountain horse downwards is generally adopted by a method recorded in CN109398644B in ship construction, and the method has the technical defects of difficult disassembly operation, high operation risk coefficient, complicated polishing treatment procedure of the PIECE after disassembly, large damage to a ship body structure and inapplicability to high-painting requirement cabins such as methanol cabins. Document CN116461673 a discloses a scaffold for ship construction and a construction method thereof, by arranging vertical reinforcing ribs between horizontal ribs, the problem that the scaffold layer height is determined by the horizontal rib spacing is solved, flexible installation of scaffold horses is realized, but the scaffold is mainly applicable to a rib structure outside a ship body, the construction characteristics of a narrow closed cabin under a deck are not considered, scaffold eye plates still need to be welded on the vertical reinforcing ribs, welding points are more, the high requirement on a methanol cabin still cannot be met due to damage to ship body coating, and meanwhile, a dismantling structure adapting to a narrow space is not designed, and the disassembly difficulty and the operation risk are still higher. Document CN219528344U discloses a platform suspension scaffold device of setting up fast, hangs scaffold pipe and scaffold board through reinforcing bar rings, is applicable to the construction of steel grating or girder steel structure below, but its suspended structure is reinforcing bar rings + steel sheet/top rings, and scaffold pipe is spacing through bottom rings only, and quadrilateral structural stability is not enough, can not directly dismantle the suspension rope at overhead rings position when dismantling. In summary, the existing scaffold for the ship cannot meet the construction requirements of high coating requirements under the deck of the ship, low welding damage of a narrow closed cabin, high adaptability, safety and convenience in disassembly, and a brand new under-deck scaffold device and a paving and disassembling method are needed. Disclosure of Invention The invention provides a ship under-deck scaffold device and a paving and dismantling method thereof, and aims to solve the technical problems that in the prior art, a ship under-deck scaffold is large in welding damage, difficult to dismantle, poor in adaptability to cabins with different sizes, high in overhead operation risk and incapable of adapting to cabins with high coating requirements such as methanol cabins. The technical scheme includes that the ship under-deck scaffold device is characterized in that left scaffold eye plates and right scaffold eye plates are symmetrically arranged on two sides of a ship bulkhead, and the left scaffold eye plates and the right scaffold eye plates are respectively connected with a left scaffold horse and a right scaffold horse through bolts; a steel pipe jig assembly is arranged between the left scaffold horse and the right scaffold horse, a plurality of steel pipe jig hooks are arranged on the steel pipe jig assembly, and the steel pipe jig hooks are positioned at the center of the assembly and are used as center steel pipe jig hooks; the lower surface of the deck is provided with a plurality of scaffold hooks corresponding to the steel pipe jig hooks, and the center of the deck is provided with a central scaffold hook; The center scaffold hook is only connected with the center steel pipe jig hook by adopting a vertical hanging chain, the other scaffold hooks are connected with two groups of steel pipe jig hooks, one group is the steel pipe jig hook corresponding to the lower part of the scaffold hook, the two groups are connected by