A method of construction of high cabin sections in tight spaces on large ships

Abstract

The present application relates to a kind of narrow space high cabin section construction method on large ship, the construction method is applied in the narrow space high cabin including rudder stock cabin in ship structure, by designing the platform of convenient construction, to reduce the use of step and not to build temporary scaffold platform.The narrow space high cabin construction method including rudder stock cabin section of the present application, according to the structure type of cabin section and cabin height, according to different situations, different layered platforms are constructed, the layer height above 3m in room is divided into two parts, thereby avoiding the erection of scaffold, and the installation quantity of step is reduced, work efficiency is improved, and the workload of erection and dismantling of scaffold is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to shipbuilding, in particular to a method for manufacturing a high cabin section in a narrow space including a rudder stock cabin during the construction of a large ship. BACKGROUND

[0002] At present, there are some cabin rooms with narrow space and high height of 3-6 meters in the process of section construction, and it is usually necessary to install steps in these cabin rooms for maintenance during the use of the ship. When constructing the section with such cabin rooms, scaffolding is needed for welding construction. Because of the small construction space, the work is difficult, time-consuming and the construction effect is not very ideal.

[0003] Taking the rudder stock cabin in a large ship as an example, as shown in Figure 4 , it includes a plurality of components 9 with a height of more than 2 meters, and a plurality of scattered plating 8 is provided at the top. We will take the rudder stock cabin section as a general term for the ship area within 2 meters around the rudder stock, which is constructed separately, and the construction is in the reverse state, and the use is in the normal state. As a typical section of narrow space high cabin room, the narrow space high cabin room has the characteristics of narrow transverse space and high height, and it is usually constructed with the aid of installed steps and scaffolding platforms during the construction of the rudder stock cabin. The role of the steps is to facilitate the climbing and stepping of the construction personnel for welding. The role of the scaffolding platform is to facilitate the welding construction at high places (more than 3 meters). At present, the number of installed steps in the cabin of this type reaches several hundred, and the workload is relatively large. Generally, the rudder stock cabin is located at the stern of the ship, and the space in the cabin is narrow, so the operation of installing steps and scaffolding platforms is difficult and time-consuming.

[0004] According to the design requirements, the steps of the ship section are not removed after construction, and are left for future maintenance of the equipment in the cabin, while the scaffolding platform needs to be removed and transported out. Because of the small space, the use of existing technology to manufacture narrow space sections is a challenging work. Therefore, there is an urgent need for a new manufacturing method for narrow space high cabin rooms. SUMMARY

[0005] In order to solve the problems of the need for a large number of installed steps in the narrow space high cabin room in the prior art, and the temporary scaffolding, the present application designs a transition platform for convenient construction on the ship structure, reduces the use of steps, and does not need to build a temporary scaffolding platform during construction, so as to achieve the purpose of reducing construction difficulty, improving construction safety and reducing cost.

[0006] In order to achieve the above invention purpose, the technical scheme provided by the present application is as follows:

[0007] The application relates to a construction method for a high-cabin section of a narrow space on a large ship, which is applied to a narrow space high cabin on a ship structure including a rudder stock cabin, and the construction method comprises the following steps:

[0008] In the first step, the narrow space high cabin on the ship structure including the rudder stock cabin section is classified, and a layered platform is selected according to the classification; the classification standard is the height in the cabin;

[0009] In the second step, the layered platform is selected to be a large flat layer or a staggered layer structure according to the internal structure of the narrow space cabin, so that the height in the cabin is layered, the layering is 2m high, 2.6m high or 3m high, and the third step to the fifth step are respectively executed;

[0010] In the third step, the layered platform is used to divide the cabin into multiple layers with a height of 3m, and a scaffold platform is not needed for the 3m layer height;

[0011] In the fourth step, the layered platform is used to divide the cabin into multiple layers with a height of 2.6m or less, and the number of steps is reduced or the steps are not installed in the 2.6m layer height;

[0012] In the fifth step, the layered platform is used to divide the cabin into multiple layers with a height of 2m or less, and the steps are not installed in the 2m layer height;

[0013] In the sixth step, the layered platform is used for assembly, welding, polishing and painting operations on high parts in the narrow space high cabin including the rudder stock cabin, until the construction of the rudder stock cabin section is completed, and the high part refers to a part higher than 2.6m.

[0014] In the construction method for the high-cabin section of the narrow space on the large ship, the large flat layer is a steel plate of the layered platform in the narrow space high cabin, which is arranged on the same plane.

[0015] In the construction method for the high-cabin section of the narrow space on the large ship, the staggered layer is a steel plate of the layered platform in the narrow space high cabin, which is arranged on at least two parallel planes.

[0016] In the construction method for the high-cabin section of the narrow space on the large ship, a scaffold platform is required to be built in the rudder stock cabin section with a height of more than 3m in the third step, and the scaffold platform needs to be removed after the construction is completed.

[0017] In the construction method for the high-cabin section of the narrow space on the large ship, a hole is designed in the structure with a height of 2.6m or less in the fourth step, the hole is used for stepping, and the steps are not needed to be installed during the construction, and hands can reach the layer top.

[0018] In the method for constructing a high cabin section of a narrow space on a large ship, a split-level platform is used when the cabin is high on one side and low on the other side.

[0019] Based on the above technical solution, the method for constructing a high cabin section of a narrow space on a large ship has the following technical effects after practical application:

[0020] 1. The method for constructing a high cabin section of a narrow space including a rudder stock cabin on a large ship, according to the structure type and height of the cabin section, different split-level platforms are constructed according to different situations, the layer height of more than 3 meters in the cabin is divided into two parts, thereby avoiding the construction of scaffolding, reducing the number of installed steps, improving work efficiency, and reducing the construction and dismantling workload of scaffolding.

[0021] 2. The method divides the height in the cabin into multiple layers of less than 3 meters, less than 2.6 meters, and less than 2 meters through the design of an intermediate platform, the layer height of less than 3 meters does not need to be built with scaffolding, the layer height of less than 2.6 meters reduces or cancels the installation of steps, and the height of less than 2 meters does not need to install steps to realize the construction of the layer top.

[0022] 3. The intermediate platform of the present application can also be designed as a large flat layer or a split-level structure according to the different structure types of the section, the narrow space cabin section of a regular shape is designed as a large flat layer to divide the height in the cabin into a space height of less than 3 meters, less than 2.6 meters, or less than 2 meters, and for the narrow space cabin section of an irregular shape, a split-level structure can be designed according to the needs to divide the height in the cabin into a space height of less than 3 meters, less than 2.6 meters, or less than 2 meters, thereby achieving the purpose of canceling the construction of scaffolding, reducing the number of installed steps, and improving the convenience and difficulty of construction. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a distribution diagram of a split-level platform in an embodiment of the method for constructing a high cabin section of a narrow space on a large ship.

[0024] Figure 2 is a planar platform diagram

[0025] Figure 3 is a section positive and negative state diagram

[0026] Figure 4 is a section scattered plate outer plate, high area component diagram

[0027] 1 - low platform in staggered platform, 2 - high platform in staggered platform, 3 - passage hole above platform in reverse state, 4 - passage hole above platform in normal state, 5 - segmented structural member, 6 - platform in the same plane, 7 - segmented outer plate, 8 - scattered outer plate, 9 - member with a height greater than 2 meters. DETAILED DESCRIPTION

[0028] The present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments, so that the structure and working principle can be more clearly understood, but the protection scope of the present application should not be limited thereby.

[0029] The present application is a construction method for a high cabin segment in a narrow space on a large ship. The construction method is applied to a high cabin in a narrow space on a ship structure, including a rudder stock cabin. The high cabin in the narrow space has the characteristics of narrow transverse space and high height. In shipbuilding practice, the rudder stock cabin segment is defined as the ship body area within 2 meters around the rudder stock, which is constructed and hoisted as an independent segment. A platform for convenient construction is designed to reduce the use of steps and the need to build temporary scaffolding platforms. The construction method includes the following steps:

[0030] First, classify the high cabin in the narrow space on the ship body structure, including the rudder stock cabin segment. The high cabin in the narrow space has the characteristics of narrow transverse space and height exceeding three meters or even reaching six meters. The transverse space is generally divided into narrow spaces within 1 meter, i.e., the interval between the segmented structural members 5 is less than 1 meter, as shown in FIG. 1. According to the classification of the segments on the ship body structure, select a layered platform. The classification standard is the height inside the cabin. Figure 1

[0031] Second, according to the internal structure of the cabin in the narrow space, select a layered platform as a large flat layer or a staggered structure to divide the height inside the cabin into layers, i.e., 2 meters high, 2.6 meters high, or 3 meters high. Perform the third to fifth steps respectively. The rudder stock cabin segment with a height of more than 3 meters in the cabin will build a scaffolding platform according to the construction requirements. The scaffolding platform needs to be removed after the construction is completed. This will cause long construction time and low construction efficiency.

[0032] Third, divide the cabin into multiple layers with a height of 3 meters by the layered platform. The layer height of 3 meters does not need to build a scaffolding platform.

[0033] Fourth, divide the cabin into multiple layers with a height of 2.6 meters or less by the layered platform. The layer height of 2.6 meters or less does not need to install steps or reduce the number of step installations. The structure with a height of 2.6 meters or less is designed with an inner hole. The inner hole is designed to realize stepping. During construction, the top of the layer can be reached by hand without the need to install steps.

[0034] ​The fifth step is to divide the cabin into multiple layers within 2 meters in height by using the layered platform, and no steps are installed in the layer within 2 meters.

[0035] The sixth step is to use the layered platform to perform assembly, welding, grinding and painting operations on the high position in the narrow space high cabin including the rudder stock cabin, until the construction of the rudder stock cabin section is completed, where the high position refers to a position with a height greater than 2.6 meters.

[0036] The large flat layer refers to the layered platform in the narrow space high cabin being a steel plate in the same plane, as shown in Figure 2 wherein the number 6 in the figure is the same plane platform, and the number 7 is the top section plate. The staggered layer refers to the layered platform in the narrow space high cabin being a steel plate in the same at least two parallel planes, as shown in Figure 1 wherein the number 1 is the low platform in the staggered layer platform, the number 2 is the high platform in the staggered layer platform, the number 3 is the passage hole above the platform in the inverted state, the section is constructed in the inverted state during the construction process, and is in the normal state after being hoisted onto the ship body, so that the passage hole is needed during installation and maintenance, and the number 4 is the passage hole above the platform in the normal state. Inverted construction and normal installation and maintenance are shown in Figure 3 .

[0037] If the narrow space high cabin is high on one side and low on the other side, the staggered layered platform is used.

[0038] Embodiment 1

[0039] The implementation purpose of this embodiment is to reduce the construction difficulty and improve the construction safety. The means adopted is to design a structural platform to divide the cabin height into layers, and the layers are within 2 meters, 2.6 meters or 3 meters.

[0040] For example, a cabin with a height of 4.6 meters is divided into 2 meters and 2.6 meters.

[0041] When the height is 5 meters, the layers are 2 meters and 3 meters.

[0042] When the height is 5.6 meters, the layers are 2.6 meters and 3 meters.

[0043] When the height is 6 meters or more, the layers are 3 meters and 3 meters.

[0044] If the 2.6-meter layer structure has an inner hole that can be stepped on, and the top of the layer can be reached by stretching the hand during construction, no steps need to be installed. The effect is that no steps are installed or fewer steps are installed within 2.6 meters after layering, and no temporary footstep platform needs to be installed within 3 meters after layering.

[0045] The cabin of the hull is not necessarily square, the cabin with planking is a ladder-shaped cabin with one side having a curvature, the height of the cabin varies between 3m and 6m, staggered platforms can be arranged, one part is 2m away from the flat bottom, and one part is 2.6m away from the flat bottom, so that when the cabin is built, it is divided into 2 layers within 3m, i.e. without the need to set up scaffolding.

[0046] When designing a layer of intermediate platform at 2m, the number of installed steps is reduced by nearly 400. It is envisaged that if there is no such structure platform, the cabin with a height varying between 3m and 5.6m needs to install more than 1000 steps, and scaffolding needs to be set up at appropriate positions so that workers at the top of the cabin can perform a large number of structural assembly, welding, grinding and painting operations.

[0047] Embodiment 2

[0048] This embodiment is the construction steps of a certain rudder stock cabin section on a large ship.

[0049] As shown in Figure 1 and Figure 3 , when the rudder stock cabin section 1 at the stern of a large ship is constructed in a section reverse state, the outer plate is finally scattered and attached, i.e. a plurality of scattered and attached outer plates are arranged in the upper arc region of the section, there is no intermediate structural platform between the rudder platform and the outer plate, and workers need to climb the steps for work. The section is relatively high, with a maximum height of 6m. In the original construction technology, there is no intermediate structural platform between the rudder platform and the outer plate, and workers need to climb the steps for work.

[0050] As shown in Figure 2 and Figure 4 , Figure 2 shows a planar platform diagram, Figure 4 is a scattered and attached outer plate, showing the layered platform style of the high component region. When a layer of intermediate layered platform 2 is designed at 2m in the cabin of the rudder stock cabin section 1, the number of installed steps is reduced by nearly 400 using the innovative technology of the present application. It is envisaged that if there is no such structure platform, the cabin with a height varying between 3m and 5.6m needs to install more than 1000 steps, and scaffolding needs to be set up at appropriate positions so that workers at the top of the cabin can perform a large number of structural assembly, welding, grinding, painting and other operations.

[0051] The existing construction technology does not have an intermediate structure platform. Due to the high layer height, a scaffold is needed on site for workers to perform a large amount of structural assembly, welding, grinding, painting and other operations. Due to the dense structure at the rudder, it is difficult to set up a scaffold in some narrow spaces, and personnel cannot pass through conveniently. A process step is arranged by the construction method, and workers climb up for operation with the help of the step. The site feedback is that the construction efficiency is low, and there is a safety risk. After the innovative technology of the application is used, the steps are reduced: 372 / ship, and the previous number of steps is 1110. After the improvement, the steps above the platform are all cancelled, the total number is reduced by 372 to 738. About 200 hours of labor time is saved on site.

[0052] Further, if the layered platform is changed to staggered, it is arranged at 2 meters in the part with lower cabin height, and is designed at 2.6 meters in the part with higher cabin height, half of the layer height is reduced by 600 mm, and the number of steps can be further reduced.

[0053] Although the above embodiments have been specifically described for the application, it should be understood by those skilled in the art that modifications or improvements can be made based on the disclosure of the application without departing from the spirit and scope of the application, and these modifications and improvements are within the spirit and scope of the application.

Claims

1. A method for constructing high-cabin sections with confined spaces on a large ship, characterized in that, This construction method is applied to confined, high-ceilinged spaces in ship structures, including the rudder bay. By designing platforms that facilitate construction, it reduces the need for steps and eliminates the need for temporary scaffolding platforms. The construction method includes the following steps: The first step is to classify the narrow, high-ceilinged spaces in the ship's structure, including the rudder stock section, and select the tiered platforms based on the classification. The classification standard is the height of the cabin. The second step, based on the internal structure of the confined space, is to select either a large flat or staggered structure for the tiered platform, creating tiered levels within the cabin, with each level being 2 meters high. For heights of 2.6 meters or 3 meters, proceed with steps three through five respectively. The third step is to divide the cabin into multiple layers 3 meters high using a layered platform. The 3-meter height eliminates the need for scaffolding platforms. The fourth step is to divide the cabin into multiple layers within a height of 2.6 meters using a layered platform. Steps will not be installed within a layer height of 2.6 meters, or the number of steps will be reduced. The fifth step involves dividing the cabin into multiple levels within 2 meters in height using a tiered platform. Steps are not installed on each level within 2 meters in height. The sixth step involves assembling, welding, grinding, and painting the high-level components in the confined space of the rudder stock compartment using a layered platform, until the construction of the rudder stock compartment section is completed. The aforementioned large flat floor refers to a tiered platform within a confined, high-ceilinged space, consisting of steel plates on the same plane. The aforementioned staggered platform refers to a steel plate situated on at least two parallel planes within a confined, high-ceilinged space.

2. The construction method for a high-cabin section with confined space on a large ship according to claim 1, characterized in that, In the third step, the construction of the rudder cabin section with a height of more than 3 meters requires the construction of a scaffolding platform, which needs to be dismantled after the construction is completed.

3. The construction method for a high-cabin section with confined space on a large ship according to claim 1, characterized in that, In the fourth step, the structure is designed with an inner hole within 2.6 meters. This inner hole allows for stepping, so that the ceiling can be reached during construction without the need to install steps.

4. The construction method for a high-cabin section with confined space on a large ship according to claim 1, characterized in that, In cases where one side of the confined high-cabin interior is higher than the other, a staggered, layered platform is used.

5. The construction method for a high-cabin section with confined space on a large ship according to claim 1, characterized in that, The bulkhead is also designed with access holes for use with the layered platforms.

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