Hoisting, positioning and adjusting method for B-type tank
By installing lugs at the bottom of the B-type tank and the bottom of the tank compartment, and by using a traction device and a lifting mechanism, the problem of insufficient positioning accuracy of the B-type tank was solved, achieving precise positioning and temporary fixation, and improving installation efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-08
- Publication Date
- 2026-03-13
AI Technical Summary
In the existing technology, the positioning and installation accuracy of type B tanks is difficult to reach the millimeter level, and the load-bearing lifting ring on the top of the tank alone cannot meet the high-precision positioning and adjustment requirements.
First and second lugs are installed at the bottom of the Type B tank and the bottom of the tank compartment, and are connected along the transverse and longitudinal directions of the ship by a traction device. The position of the Type B tank is adjusted by the traction device to make it precisely aligned with the centerline of the tank compartment, and the installation height is adjusted by a lifting mechanism to achieve precise positioning and temporary fixation.
It enables precise positioning and temporary fixation of the Type B tank, ensuring that the tank does not move when the anti-floating device and anti-sway block are installed subsequently, thus improving positioning accuracy and installation efficiency.
Smart Images
Figure CN121650830A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of shipbuilding technology, and in particular to a method for hoisting, positioning and adjusting a type B tank. Background Technology
[0002] Type B tanks on container ships are the core equipment for storing cryogenic fuels such as LNG (liquefied natural gas). Type B tanks are generally manufactured as a single unit and then hoisted onto the ship as a whole. Because the installation precision of Type B tanks needs to reach the millimeter level, the positioning requirements are extremely high. However, the load-bearing lifting rings on the top of the tank alone cannot meet the high-precision positioning and adjustment requirements. Summary of the Invention
[0003] The purpose of this invention is to provide a method for hoisting, positioning, and adjusting a type B tank, so as to solve the technical problems in the prior art to a certain extent.
[0004] This invention provides a method for hoisting, positioning, and adjusting a type B tank, comprising the following steps: Step 100: Preparation Stage; First lugs are installed on the two anti-roll bases on opposite sides of the ship's transverse direction at the bottom of the Type B tank, and on the two anti-roll bases on opposite sides of the ship's longitudinal direction. Second lugs are installed on the two sides opposite each other along the transverse direction of the ship and on the two sides opposite each other along the longitudinal direction of the ship at the bottom of the tank. Step 200, hoisting stage; A traction device is connected between the first and second lugs on the same side, and the position of the Type B tank, which is hoisted into the tank hold, is adjusted along the transverse and longitudinal directions of the ship using the traction device.
[0005] Furthermore, in step 100, the first ear plate is welded to the corresponding anti-pitch base or anti-roll base.
[0006] Furthermore, in step 100, the second ear plate is welded to the bottom of the tank compartment.
[0007] Furthermore, the first ear plate, the anti-roll base, the anti-pitch base, and the type B tank are made of the same material; The second ear plate is made of the same material as the tank compartment.
[0008] Furthermore, in step 100, the welding process of the first ear plate on the corresponding anti-swelling base or anti-rolling base is located in the construction stage of the bottom section of the type B tank.
[0009] Furthermore, in step 100, the welding process of the second ear plate at the bottom of the tank compartment is located in the construction stage of the bottom section of the tank compartment.
[0010] Furthermore, in step 200, the traction device is a hand-operated hoist.
[0011] Furthermore, each of the anti-roll bases and each of the anti-pitch bases is provided with two first ear plates; The two first lugs on each of the anti-sway bases are symmetrically arranged along the longitudinal centerline of the B-type tank; The two first lugs on each of the anti-sway bases are symmetrically arranged along the transverse centerline of the Type B tank.
[0012] Furthermore, each side of the bottom of the tank compartment is provided with two second ear plates; The two second lugs located on the same side of the bottom of the tank along the transverse direction of the ship are symmetrically arranged along the longitudinal direction of the ship. The two second lugs located on one side of the bottom of the tank along the longitudinal direction of the ship are symmetrically arranged along the transverse direction of the ship.
[0013] Furthermore, step 200 also includes the following steps: arranging multiple lifting mechanisms between the bottom of the tank compartment and the bottom of the Type B tank, such that the multiple lifting mechanisms are spaced apart circumferentially along the bottom of the Type B tank, and using the multiple lifting mechanisms to adjust the position of the Type B tank in the vertical direction.
[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: The lifting and positioning adjustment method for a Type B tank provided by this invention includes the following steps: First, in the preparation stage, first lugs are respectively installed on two anti-pitch bases on opposite sides of the ship's transverse direction and on two anti-roll bases on opposite sides of the ship's longitudinal direction at the bottom of the Type B tank; second lugs are respectively installed on opposite sides of the ship's transverse direction and on opposite sides of the ship's longitudinal direction at the bottom of the tank compartment; Next, in the lifting stage, a traction device is connected between the first and second lugs on the same side, and the position of the Type B tank lifted into the tank compartment is adjusted along the ship's transverse and longitudinal directions using the traction device, so that the transverse centerline of the Type B tank is precisely aligned with the transverse centerline of the tank compartment, and the longitudinal centerline of the Type B tank is precisely aligned with the longitudinal centerline of the tank compartment. Thus, during the lifting stage of the Type B tank, precise positioning adjustment of the Type B tank is achieved. At the same time, after the positioning adjustment is completed, the Type B tank can also be temporarily fixed to prevent the Type B tank from moving when anti-buoyancy devices, anti-roll blocks, and anti-pitch blocks are installed between the Type B tank and the tank compartment. Attached Figure Description
[0015] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of the structure of a Type B tank provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the bottom structure of a type B tank provided in an embodiment of the present invention; Figure 3 This is a schematic diagram illustrating the positioning adjustment of the Type B tank along the transverse direction of the ship, provided by an embodiment of the present invention. Figure 4 This is a schematic diagram illustrating the positioning and adjustment of the Type B tank along the longitudinal direction of the ship, provided in an embodiment of the present invention. Figure 5 This is a schematic diagram illustrating the adjustment of the installation height of the Type B tank along the longitudinal direction of the ship, provided as an embodiment of the present invention.
[0017] Figure label: 1-Type B tank, 2-Anti-rolling base, 3-Anti-swinging base, 4-First lug, 5-Traction device, 6-Tank compartment, 7-Second lug, 8-Lifting mechanism. Detailed Implementation
[0018] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.
[0019] The components of the embodiments of the invention described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.
[0020] Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0021] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0022] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0023] The following reference Figures 1 to 5 This application describes a method for hoisting, positioning, and adjusting a type B tank according to some embodiments.
[0024] This application provides a method for hoisting and positioning a Type B tank, which is used to adjust the position of the Type B tank in the tank hold of the ship when the Type B tank is hoisted into the ship, so that the center line of the Type B tank body is aligned with the center line of the tank hold.
[0025] The hoisting, positioning, and adjustment method for the Type B tank in this application is as follows: Figure 1 As shown, it includes the following steps: Step 100: Preparation Stage; First lugs are respectively installed on the two anti-roll bases on opposite sides of the ship's transverse direction at the bottom of the Type B tank, and on the two anti-roll bases on opposite sides of the ship's longitudinal direction. Second lugs are installed on the two sides opposite each other along the transverse direction of the ship and on the two sides opposite each other along the longitudinal direction of the ship at the bottom of the tank. Step 200, hoisting stage; A traction device is connected between the first and second lugs on the same side, and the position of the Type B tank, which is hoisted into the tank hold, is adjusted along the transverse and longitudinal directions of the ship using the traction device.
[0026] In the lifting, positioning, and adjustment method for the Type B tank provided in this application, such as Figure 1 and Figure 2 As shown, step 100 is the preparation stage before hoisting, specifically, the first lug plate 4 is arranged at the bottom of the B-type tank 1, and the second lug plate 7 is arranged at the bottom of the tank compartment 6 of the ship.
[0027] Regarding the arrangement of the first ear plate 4 at the bottom of Type B tank 1, as follows: Figure 2 As shown, the bottom of Type B tank 1 is provided with anti-roll bases 3 on both sides of the transverse direction of the ship and anti-roll bases 2 on both sides of the longitudinal direction of the ship. First lugs 4 are installed on both anti-roll bases 3 and both anti-roll bases, so that the bottom of Type B tank 1 is provided with first lugs 4 on both sides of the transverse and longitudinal directions of the ship.
[0028] Regarding the arrangement of the second lug 7 at the bottom of tank compartment 6, in conjunction with... Figure 3 and Figure 4 As shown, corresponding to the arrangement of the first lug 4 at the bottom of the tank 6, the second lug 7 is installed on both sides of the ship in the transverse and longitudinal directions.
[0029] Step 200 is the hoisting stage where the Type B tank 1 is lifted into the tank compartment 6. Both the Type B tank 1 and the tank compartment 6 have longitudinal centerlines along the ship's longitudinal direction and transverse centerlines along the ship's transverse direction. In this step, a traction device 5 is connected between the corresponding first lug 4 and second lug 7 on each side of each group, such as... Figure 2 and Figure 4 As shown, the longitudinal traction devices 5 on both sides are used to adjust the position of Type B tank 1 in the longitudinal direction of the ship, so that the transverse centerline of Type B tank 1 is precisely aligned with the transverse centerline of tank compartment 6, as shown. Figure 2 and Figure 3 As shown, the traction devices 5 on both sides of the lateral direction are used to adjust the position of Type B tank 1 in the transverse direction of the ship, so that the longitudinal centerline of Type B tank 1 is precisely aligned with the longitudinal centerline of tank 6. This allows for precise positioning and adjustment of Type B tank 1 during the hoisting stage. After the positioning and adjustment are completed, Type B tank 1 can also be temporarily fixed to prevent it from moving when anti-buoyancy devices, anti-roll blocks, and anti-pitch blocks are installed between Type B tank 1 and tank 6.
[0030] It should be noted that after the Type B tank 1 is positioned within the tank compartment 6, an anti-buoyancy device needs to be installed between the top of the Type B tank 1 and the deck of the tank compartment 6 above it to prevent the Type B tank 1 from floating upwards during ship navigation or changes in the internal material capacity. At the bottom of the tank compartment 6, an anti-roll mating seat is provided opposite to the anti-roll base 2 at the bottom of the Type B tank 1. A buffer anti-roll block needs to be installed between the corresponding anti-roll mating seat and the anti-roll base 2. At the bottom of the tank compartment 6, an anti-pitch mating seat is provided opposite to the anti-pitch base 3 at the bottom of the Type B tank 1. A buffer anti-pitch block needs to be installed between the corresponding anti-pitch mating seat and the anti-pitch base 3.
[0031] In one embodiment of this application, preferably, as shown below, Figure 3As shown, step 200 of the lifting and positioning adjustment method for type B tanks also includes the following steps: multiple fixed seats are provided at the bottom of type B tank 1, and the multiple fixed seats are evenly distributed at the bottom of the tank body. Support seats are provided at the bottom of the tank compartment 6 at positions opposite to each fixed seat. During the lifting process, a lifting mechanism 8 (such as a hydraulic cylinder) is set between the opposite fixed seats and support seats to position and adjust the installation height of type B tank 1 in the tank compartment 6.
[0032] In this embodiment, preferably, the first ear plate 4, the anti-pitch base 3, the anti-roll base 2, and the tank body of the type B tank 1 are all made of the same material, namely 9% Ni steel (referred to as 9Ni steel), so that the first ear plate 4 can be installed on the corresponding anti-pitch base 3 and anti-roll base 2 by welding. At the same time, since the outer side of the tank body of the type B tank 1 is provided with an insulating material layer, this application also solves the problem that the first ear plate 4 cannot be directly welded to the tank body of the type B tank 1 because it is covered with an insulating material layer, by welding the first ear plate 4 to the anti-pitch base 3 and the anti-roll base 2.
[0033] In this embodiment, preferably, the second ear plate 7 and the tank compartment 6 are made of the same material, namely carbon steel, so that the second ear plate 7 can be installed at the bottom of the tank compartment 6 by welding.
[0034] In this embodiment, preferably, in step 100, the welding process of the first ear plate 4 on the corresponding anti-swelling base 3 or anti-rolling base 2 is located in the construction stage of the bottom section of the B-type tank 1; the welding process of the second ear plate 7 on the bottom of the tank compartment 6 is located in the construction stage of the bottom section of the tank compartment 6, thereby solving the problem that open flame operations cannot be carried out after the B-type tank 1 is put into the compartment.
[0035] In this embodiment, each anti-sway base 2 is equipped with two first ear plates 4, and the two first ear plates 4 are symmetrical with respect to the longitudinal centerline of the B-type tank 1; each anti-rollback base 3 is also equipped with two first ear plates 4, and the two first ear plates 4 are symmetrical with respect to the transverse centerline of the B-type tank 1.
[0036] Correspondingly, the bottom of tank 6 is also provided with two second lugs 7 on each side along the transverse and longitudinal directions of the ship. The two second lugs 7 on the same side of the bottom of tank 6 in the transverse direction are symmetrically arranged with respect to the longitudinal centerline of tank 6, and the two second lugs 7 on the same side of the bottom of tank 6 in the longitudinal direction are symmetrically arranged with respect to the transverse centerline of tank 6. That is to say, the bottom of type B tank 1 is provided with 8 first lugs 4, and the bottom of tank 6 is provided with 8 second lugs 7. When adjusting the position of type B tank 1, the 8 first lugs 4 and 8 second lugs 7 are connected one-to-one through the traction device 5, thereby providing sufficient traction force for type B tank 1 to adjust its position.
[0037] In this embodiment, preferably, the traction device 5 is a hand-operated hoist, so that traction adjustment can be achieved by simply pulling the zipper manually, without relying on external power such as electricity or hydraulics, which is suitable for scenarios where power supply is inconvenient at ship section construction sites.
[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. A method for hoisting, positioning, and adjusting a type B tank, characterized in that, Includes the following steps: Step 100: Preparation Stage; First lugs are installed on the two anti-roll bases on opposite sides of the ship's transverse direction at the bottom of the Type B tank, and on the two anti-roll bases on opposite sides of the ship's longitudinal direction. Second lugs are installed on the two sides opposite each other along the transverse direction of the ship and on the two sides opposite each other along the longitudinal direction of the ship at the bottom of the tank. Step 200, hoisting stage; A traction device is connected between the first and second lugs on the same side, and the position of the Type B tank, which is hoisted into the tank hold, is adjusted along the transverse and longitudinal directions of the ship using the traction device.
2. The method for hoisting, positioning, and adjusting a type B tank according to claim 1, characterized in that, In step 100, the first ear plate is welded to the corresponding anti-pitch base or anti-roll base.
3. The method for hoisting, positioning, and adjusting a type B tank according to claim 1, characterized in that, In step 100, the second ear plate is welded to the bottom of the tank compartment.
4. The method for hoisting, positioning, and adjusting a type B tank according to claim 1, characterized in that, The first ear plate, the anti-roll base, the anti-swing base, and the type B tank are made of the same material; The second ear plate is made of the same material as the tank compartment.
5. The method for hoisting, positioning, and adjusting a type B tank according to claim 1, characterized in that, In step 100, the welding process of the first ear plate on the corresponding anti-sway base or anti-rollback base is located in the construction stage of the bottom section of the Type B tank.
6. The method for hoisting, positioning, and adjusting a type B tank according to claim 1, characterized in that, In step 100, the welding process of the second ear plate at the bottom of the tank compartment is located in the construction stage of the bottom section of the tank compartment.
7. The method for hoisting, positioning, and adjusting a type B tank according to claim 1, characterized in that, In step 200, the traction device is a hand-operated hoist.
8. The method for hoisting, positioning, and adjusting a type B tank according to claim 1, characterized in that, Each of the anti-roll bases and each of the anti-spread bases is provided with two first ear plates; The two first lugs on each of the anti-sway bases are symmetrically arranged along the longitudinal centerline of the B-type tank; The two first lugs on each of the anti-sway bases are symmetrically arranged along the transverse centerline of the Type B tank.
9. The method for hoisting, positioning, and adjusting a type B tank according to claim 1, characterized in that, Two second lugs are provided on each side of the bottom of the tank; The two second lugs located on the same side of the bottom of the tank along the transverse direction of the ship are symmetrically arranged along the longitudinal direction of the ship. The two second lugs located on one side of the bottom of the tank along the longitudinal direction of the ship are symmetrically arranged along the transverse direction of the ship.
10. The method for hoisting, positioning, and adjusting a type B tank according to claim 1, characterized in that, Step 200 further includes the following steps: arranging multiple lifting mechanisms between the bottom of the tank compartment and the bottom of the Type B tank, such that the multiple lifting mechanisms are spaced apart circumferentially along the bottom of the Type B tank, and using the multiple lifting mechanisms to adjust the position of the Type B tank in the vertical direction.