An installation method of a construction platform for an enclosure system

Abstract

The present application provides an installation method for a construction platform of an enclosure system, including building the construction platform on a bracket platform; arranging a plurality of mobile trolleys at the bottom of the construction platform, and installing a first track on the bracket platform so that the plurality of mobile trolleys can carry the construction platform and move along the first track; marking a plurality of column positioning points on the inner bottom of the liquid cargo hold and installing a second track so that the mobile trolleys can move along the second track; lifting and moving the bracket platform so that the upper surface of the bracket platform is flush with the upper surface of the inner bottom of the liquid cargo hold, and the first track is aligned with the second track; separating the bottom of the column from the bracket platform, mounting the construction platform on the plurality of mobile trolleys, sliding the mobile trolleys onto the second track so that each column of the construction platform is aligned with the corresponding column positioning point on the inner bottom of the liquid cargo hold; lowering the column and fixing it on the inner bottom of the liquid cargo hold. This method enables the overall positioning and installation of the construction platform module into the liquid hold without the need for lifting capacity.

Description

Technical Field

[0001] This application relates to the technical field of the containment system of liquefied gas carriers, and more particularly, to an installation method of a construction platform for a containment system. Background Art

[0002] The thin-film containment system is a thin-film containment system widely used in the cargo holds of LNG carriers and the fuel tanks of dual-fuel ships. The thin-film containment system is installed on the inner surface of the ship's cargo hold and mainly consists of thermal insulation materials and stainless steel corrugated plates. Due to the large space of the cargo hold, it is impossible to meet the span requirements by relying on equipment such as hydraulic lifting vehicles to build the containment system inside it. Therefore, the construction of the containment system must rely on a specially designed construction platform to provide a working surface for construction workers, a material stacking area, an area for placing various equipment, and a passage for the transfer of personnel and materials. However, the external contour dimensions of the construction platform are comparable to the spatial dimensions of the entire cargo hold, and it has the characteristics of large volume, heavy weight, and complex structure. In order not to interfere with the overall shipbuilding progress, the construction platform will be built under the ship and then hoisted into the cargo hold. However, due to limited lifting capacity and site resources during the shipbuilding process, the construction position of the construction platform often cannot be within the coverage of the lifting equipment working surface of the ship being built, or the lifting capacity cannot meet the hoisting of the construction platform. If the construction platform is split into multiple small platform modules that are easy to transport and then hoisted into the cargo hold for overall construction respectively, it will seriously affect the ship construction progress.

[0003] Therefore, it is urgent to develop an installation process flow of the construction platform for the containment system to solve the above problems. Summary of the Invention

[0004] The purpose of the embodiments of this application is to provide an installation method of a construction platform for a containment system, which can safely transfer the entire construction platform module into the inner bottom section of the liquid tank without lifting capacity and complete the positioning and installation. The construction platform can be built integrally with a completeness rate of up to 100%, greatly shortening the shipbuilding cycle.

[0005] This application provides an installation method of a construction platform for a containment system, including:

[0006] Build the construction platform on the bracket platform. The construction platform is supported on the bracket platform by multiple columns, and the bottom of each column can move up and down;

[0007] Arrange multiple mobile trolleys at the bottom of the construction platform, and install a first track on the bracket platform so that the multiple mobile trolleys can carry the construction platform and move along the first track;

[0008] Mark multiple column positioning points on the inner bottom of the cargo hold and install a second track so that the mobile trolley can move along the second track;

[0009] Lift and move the bracket platform so that the upper surface of the bracket platform is flush with the upper surface of the inner bottom of the liquid cargo tank, and align the first track with the second track;

[0010] Lift the column so that the bottom of the column leaves the bracket platform. The construction platform is carried on multiple mobile trolleys, and the mobile trolleys are slid to the second track so that each column of the construction platform is aligned with the corresponding column positioning point on the inner bottom of the liquid cargo tank;

[0011] Lower the column to fix it on the inner bottom of the liquid cargo tank.

[0012] In one embodiment, arranging multiple mobile trolleys at the bottom of the construction platform includes:

[0013] Install a towing beam between two adjacent columns along the first direction, arrange a weight distribution beam below the towing beam between two adjacent columns along the second direction, and evenly distribute multiple mobile trolleys below each weight distribution beam, where the first direction is perpendicular to the second direction.

[0014] In one embodiment, installing the second track on the inner bottom of the liquid cargo tank includes:

[0015] Obtain the distance between the mobile trolley and the center line of the construction platform as the set distance;

[0016] Install the second track at a predetermined distance from the center line of the inner bottom of the liquid cargo tank.

[0017] In one embodiment, the mobile trolleys are evenly distributed at the intersection position of each towing beam and the weight distribution beam.

[0018] In one embodiment, it includes: evenly arranging multiple mobile trolleys at the bottom of the construction platform. Correspondingly, the second tracks are evenly installed on the inner bottom of the liquid cargo tank at preset intervals.

[0019] In one embodiment, the bottom of each column can move up and down includes:

[0020] A jack is provided at the bottom of each column, and by rotating the jack, the bottom of the column can be moved up or down.

[0021] In one embodiment, the lifting and moving of the bracket platform includes

[0022] Arrange a flatbed truck below the bracket platform, and lift and move the bracket platform through the flatbed truck.

[0023] In one embodiment, it further includes removing the mobile trolleys, the weight distribution beams, the towing beams and the second tracks.

[0024] The beneficial effects of the installation method of the enclosure system construction platform in this application are:

[0025] 1. In this application, the construction platform is completely built on the bracket platform under the ship, and then the construction platform is moved and installed into the liquid cargo tank by means of the movable bracket platform. It realizes the safe transfer of the whole construction platform module into the inner bottom section of the liquid tank without the need for lifting capacity and completes the positioning.

[0026] 2. Since there is no need to consider the lifting capacity, the construction platform can be built at one time, and the integrity can reach 100%. To a certain extent, it reduces the construction process of the LNG carrier using the thin-film type containment system and greatly shortens the shipbuilding cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of this application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application, so they should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative efforts.

[0028] Figure 1 FIG. is an installation schematic diagram of a containment system construction platform shown according to an embodiment of this application Figure 1 ;

[0029] Figure 2 For Figure 1 an installation schematic diagram of a containment system construction platform shown Figure 1 view in the direction of A;

[0030] Figure 3 FIG. is an installation schematic diagram of a containment system construction platform shown according to an embodiment of this application Figure 2 ;

[0031] Figure 4 For Figure 3 an installation schematic diagram of a containment system construction platform shown Figure 2 view in the direction of A;

[0032] Figure 5 FIG. is a layout diagram of the column positioning points on the inner bottom of the liquid cargo tank shown according to an embodiment of this application;

[0033] Figure 6 FIG. is an installation schematic diagram of a containment system construction platform shown according to an embodiment of this application Figure 3 ;

[0034] Figure 7 FIG. is an installation schematic diagram of a containment system construction platform shown according to an embodiment of this application Figure 4 .

[0035] 100, Construction platform; 110, Column; 111, Jack; 200, Bracket platform; 210, First track; 300, Mobile trolley; 410, Drag beam; 420, Weight distribution beam; 500, Flatbed truck; 600, Inner bottom of liquid cargo tank; 610, Second track; 620, Column positioning point. Detailed implementation manners

[0036] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some, but not all, of the embodiments of the present application. Usually, the components of the embodiments of the present application described and illustrated herein can be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but merely represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the scope of protection of the present application.

[0038] The present application provides an installation method for a construction platform of an enclosure system. Figures 1 - 7 The installation schematic diagram of a construction platform in the present application is shown, and the specific steps are as follows:

[0039] See Figure 1 and Figure 2 , the construction platform 100 is erected on the bracket platform 200. The construction platform 100 is supported on the bracket platform 200 by a plurality of columns 110, and the bottom of each column 110 can move up and down. That is, the entire construction platform of the maintenance system is erected under the ship and erected on the bracket platform 200.

[0040] See Figure 3 and Figure 4 , a plurality of mobile trolleys 300 are arranged at the bottom of the construction platform 100, and a first track 210 is installed on the bracket platform 200, so that the plurality of mobile trolleys 300 can carry the construction platform 100 and move along the first track 210.

[0041] See Figure 5 , a plurality of column positioning points 620 are marked on the inner bottom 600 of the liquid cargo tank and a second track 610 is installed, so that the mobile trolley 300 can move along the second track 610. Among them, protection measures should be adopted at the bottom of the second track 610 to prevent damage to the low-temperature primer.

[0042] See Figure 6 and Figure 7, lift and move the carriage platform 200 so that the upper surface of the carriage platform 200 is flush with the upper surface of the inner bottom 600 of the liquid cargo tank, and the first track 210 is aligned with the second track 610;

[0043] Lift the column 110 upward so that the bottom of the column 110 leaves the carriage platform 200. The construction platform 100 is carried on multiple mobile trolleys 300, and the mobile trolleys 300 are slid to the second track 610 so that each column 110 of the construction platform 100 is aligned with the corresponding column positioning point 620 on the inner bottom 600 of the liquid cargo tank.

[0044] Lower the column 110 to fix it on the inner bottom 600 of the liquid cargo tank.

[0045] In the above implementation process, due to the limited lifting capacity and site resources during the construction of existing ships, the location where the platform module is erected often cannot be within the coverage of the lifting equipment working surface of the ship being built, or the lifting capacity cannot meet the hoisting of the construction platform module. In this application, the construction platform is completely erected on the carriage platform under the ship, and then the construction platform is moved and installed into the liquid cargo tank by means of the mobile carriage platform. It realizes the safe transfer of the construction platform module as a whole into the inner bottom section of the liquid tank without lifting capacity and completes the positioning. At the same time, since there is no need to consider the lifting capacity, the construction platform can be erected at one time, and the integrity can reach 100%. To a certain extent, it reduces the construction process of the LNG carrier using the thin-film type enclosure system and greatly shortens the ship construction period.

[0046] In one implementation, a plurality of mobile trolleys are arranged at the bottom of the construction platform, including installing a towing beam 410 between two adjacent columns 110 along a first direction, and arranging a weight distribution beam 420 below the towing beam 410 between two adjacent columns 110 along a second direction. The specifications of the towing beam 410 and the weight distribution beam 420 need to fully consider the overall weight of the construction platform 100 to ensure that the load of each beam is controlled within the allowable stress range of its material. A plurality of mobile trolleys 300 are evenly distributed below each weight distribution beam 420, where the first direction is perpendicular to the second direction. The first direction can be from the port side to the starboard side of the ship, and the second direction is from the bow to the stern of the ship.

[0047] In one implementation, the number and position of the mobile trolleys 300 need to meet the stability when the construction platform 100 is completely supported by the mobile trolleys 300 and moves slowly. The arrangement positions of the plurality of mobile trolleys 300 can be the intersection positions of each towing beam 410 and the weight distribution beam 420, so that the mobile trolleys 300 can be evenly distributed below the construction platform 100. The load-bearing capacity of the mobile trolleys 300 meets the formula: Load-bearing capacity = 1.5 * Total weight of the construction platform 100 / Number of mobile trolleys 300.

[0048] In one embodiment, a second track 610 is installed on the inner bottom 600 of the liquid cargo tank, including arranging the second track 610 according to the position of the moving trolley 300. For example, a plurality of moving trolleys 300 are evenly arranged at the bottom of the construction platform 100. Correspondingly, the second track 610 is evenly installed on the inner bottom 600 of the liquid cargo tank at a preset interval. The specific arrangement method may include obtaining the distance between the moving trolley 300 and the center line of the construction platform 100 as the set distance, and installing the second track 610 at a predetermined distance from the center line of the inner bottom 600 of the liquid cargo tank to ensure that the moving trolley 300 can move along the second track 610, and the second track 610 serves as the positioning of the construction platform 100 in the port and starboard directions of the hull. That is, when the moving trolley 300 slides into the second track 610, the position of the construction platform 100 in the width direction of the hull is determined.

[0049] In one embodiment, the bottom of each column can move up and down, including:

[0050] A jack 111 is provided at the bottom of each column 110. By rotating the jack 111, the bottom of the column 110 can be moved up or down. That is, each column 110 is supported on the bracket platform 200 by the jack 111, and the jack 111 can directly adjust the height of the column 110.

[0051] In one embodiment, lifting and moving the bracket platform includes:

[0052] Flatbed trucks 500 are arranged below the bracket platform 200, and the bracket platform 200 is lifted and moved by the flatbed trucks 500. The number of flatbed trucks 500 depends on the size and weight of the construction platform 100. The specific operation is to lift the flatbed trucks 500 to lift the bracket platform 200 and the construction platform 100 as a whole, and smoothly transport the construction platform 100 to the edge of the corresponding liquid tank section. By adjusting the lifting height of the flatbed trucks 500, the height of the edge of the bracket platform 200 is made the same as the height of the bottom surface of the liquid tank, and the first track 210 on the bracket platform 200 is aligned with the second track 610 on the inner bottom section.

[0053] In one embodiment, it also includes removing temporary components such as the moving trolley 300, the towing beam 410, the weight distribution beam 420, and the second track 610.

[0054] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An installation method for a construction platform of an enclosure system, characterized in that, it includes: Construct the construction platform on the bracket platform. The construction platform is supported on the bracket platform by multiple columns, and the bottom of each column can move up and down; Arrange multiple mobile trolleys at the bottom of the construction platform, including: install a towing beam between adjacent two columns along the first direction, arrange a weight distribution beam under the towing beam between adjacent two columns along the second direction, and evenly distribute multiple mobile trolleys under each weight distribution beam, where the first direction is perpendicular to the second direction; and the mobile trolleys are evenly distributed at the intersection position of each towing beam and the weight distribution beam; Install a first track on the bracket platform so that multiple mobile trolleys can carry the construction platform and move along the first track; Mark multiple column positioning points on the inner bottom of the liquid cargo tank and install a second track so that the mobile trolleys can move along the second track; The installation of the second track on the inner bottom of the liquid cargo tank includes: obtaining the distance between the mobile trolley and the center line of the construction platform as the set distance; install the second track at a predetermined distance from the center line of the inner bottom of the liquid cargo tank; lift and move the bracket platform so that the upper surface of the bracket platform is flush with the upper surface of the inner bottom of the liquid cargo tank, and the first track is aligned with the second track; Move the columns upward so that the bottoms of the columns leave the bracket platform. The construction platform is carried on multiple mobile trolleys, slide the mobile trolleys onto the second track, and align each column of the construction platform with its corresponding column positioning point on the inner bottom of the liquid cargo tank; Move the columns downward and fix them on the inner bottom of the liquid cargo tank.

2. The installation method for the construction platform of the enclosure system according to claim 1, characterized in that, it includes: Evenly arrange multiple mobile trolleys at the bottom of the construction platform. Correspondingly, install the second track evenly on the inner bottom of the liquid cargo tank at preset intervals.

3. The installation method for the construction platform of the enclosure system according to claim 1, characterized in that, The bottom of each column can move up and down, including: Install a jack at the bottom of each column. By rotating the jack, move the bottom of the column up or down.

4. The installation method for the construction platform of the enclosure system according to claim 1, characterized in that, The lifting and moving of the bracket platform includes Arrange a flatbed truck under the bracket platform, and lift and move the bracket platform by the flatbed truck.

5. The installation method for the construction platform of the enclosure system according to claim 1, characterized in that, It also includes removing the mobile trolleys, the weight distribution beams, the towing beams and the second track.

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